CN112758157B

CN112758157B - Mobile cargo carrying platform

Info

Publication number: CN112758157B
Application number: CN202110209249.3A
Authority: CN
Inventors: 王汛; 彭永宽; 曾金宇; 熊倩; 王学春; 彭铁锋
Original assignee: Xi'an Wanhexing Digital Technology Co ltd
Current assignee: Xi'an Wanhexing Digital Technology Co ltd
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2023-04-07
Anticipated expiration: 2041-02-24
Also published as: CN112758157A

Abstract

The invention provides a movable cargo carrying platform, which comprises a chassis frame, wherein a supporting plate is fixed on the surface of the chassis frame, a handrail and a front tractor are fixedly connected to the front side wall of the chassis frame, a rear tractor is rotatably connected to the rear side wall of the chassis frame, comprehensive control shock-absorbing front rollers are fixedly connected to two ends of the front side of the bottom of the chassis frame, a fixed ten thousand conversion shock-absorbing rear rollers are fixedly connected to two ends of the rear side of the bottom of the chassis frame, a roller control device is fixedly connected to the middle of the front side of the bottom, wheel braking and direction braking can be realized by the comprehensive control shock-absorbing front rollers under the control of the roller control device, the fixed ten thousand conversion shock-absorbing rear rollers can be used as orientation wheels and universal wheels, the front and rear rollers can be in three working states of a traction state, a stop state and a transverse state, and the movable cargo carrying platform can be in the traction state by downwards overturning the front tractor, so that various operation requirements of the existing rollers can be met, the operation is simple, and the labor intensity of operators is reduced.

Description

Mobile cargo carrying platform

Technical Field

The invention relates to the technical field of cargo carrying, in particular to a mobile cargo carrying platform.

Background

The goods moving platform is a movable ground, even if goods which lose flexibility are placed on the ground, the moving can be immediately obtained once the goods moving platform is installed, the moving goods become flexible moving goods, the goods installed on the goods moving platform are in a preparation state capable of being shifted into motion at any time, and the moving goods moving platform has the characteristics of short-distance moving, self-moving and the like, and is wide in application and strong in applicability. However, the inventor of the present invention finds, through research, that the front edge of the present mobile cargo platform, which is close to the push handrail, is provided with two universal damping rollers, and the existing universal damping roller braking mechanisms are fixed with the wheels, which can only brake the wheels and cannot brake the direction, when the mobile cargo platform provided with the existing damping rollers is transported in a truck carriage in a braking state, the carriage shakes or the roller direction rotates under the action of external force, and the mobile cargo platform cannot be well fixed in place and collides with each other, so that the products mounted on the mobile cargo platform are damaged, and thus the transportation requirements cannot be well met; meanwhile, two idler wheels behind the mobile cargo platform are directional wheels, and the space of assembly stations of some automobile assembly lines is very narrow, so that when accessories are pulled by a tractor or manually pushed beside the assembly stations through the mobile cargo platform, the accessories often need to be backed and shifted for many times to enter the assembly stations, and some assembly stations are too narrow and cannot be backed and enter at all, so that the production requirement of the efficient automobile assembly lines cannot be well met.

Disclosure of Invention

The invention provides a novel mobile cargo carrying platform, aiming at the technical problems that the braking mechanisms of two universal damping rollers at the front side of the existing mobile cargo carrying platform are fixed together with wheels, only the wheels can be braked but the direction can not be braked, the direction of the rollers can rotate under the action of external force, and the two rollers at the back side of the mobile cargo carrying platform are directional wheels, so that the mobile cargo carrying platform can not be backed well when the space of assembly stations of some automobile assembly lines is very narrow.

In order to solve the technical problems, the invention adopts the following technical scheme:

a movable cargo platform comprises a chassis frame, wherein a supporting plate is fixed on the surface of the chassis frame, the front side wall of the chassis frame is fixedly connected with handrails and is rotationally connected with a front tractor, the rear side wall of the chassis frame is fixedly connected with a rear tractor, the two ends of the front side of the bottom of the chassis frame are fixedly connected with fully-controlled damping front rollers, the two ends of the rear side of the bottom of the chassis frame are fixedly connected with fixed damping conversion rear rollers, and the middle of the front side of the bottom of the chassis frame is fixedly connected with a roller control device; wherein the content of the first and second substances,

the fully-controlled shock-absorbing front roller comprises a front wheel, a front connecting bolt is fixedly inserted in a central hole of a front wheel bearing on the front wheel, front lever supports are symmetrically and fixedly connected to the front connecting bolts on two sides of the front wheel, a front shock-absorbing mechanism is arranged at the rear part of each front lever support, a front step screw is movably inserted in the middle of each front lever support, a front side support is fixedly connected to the outer end of each front step screw, a brake support fixedly connected with the front side support is clamped in the front side support, a front bearing seat is fixedly connected to the top of each front side support, a plurality of front positioning grooves are circumferentially arranged on the cylinder wall of each front bearing seat, a front bearing is fixedly mounted in the central hole of each front bearing, and a front vertical rod of a front T-shaped bottom plate is fixedly inserted and matched in the central hole of each front bearing, a gear bracket is fixedly arranged on a front horizontal plate of the front T-shaped bottom plate, the surface of the front horizontal plate at the front side and the rear side of the gear bracket is fixedly connected with the bottom of the chassis frame, a first shaft pin is rotatably connected on the gear bracket, a gear is fixedly sleeved on the first shaft pin positioned in the gear bracket, a front wheel brake pull rod is fixedly sleeved on the first shaft pin positioned outside the gear bracket, a front wheel brake pull wire interface is arranged on the front wheel brake pull rod, a rack is meshed on the gear, the lower end of the rack passes through a central hole on a front vertical rod of the front T-shaped bottom plate and extends out of the bottom of the front vertical rod, an opening connecting block is rotatably clamped at the lower end of the rack, a second shaft pin is fixedly inserted on the opening connecting block, two ends of the second shaft pin are movably erected in vertical bar holes on the opposite side walls of the brake bracket, and the first connecting rod is movably connected on the second shaft pin, a fourth shaft pin is movably sleeved on the other end of the first connecting rod, a second connecting rod is fixedly connected to the fourth shaft pin, a third shaft pin is movably inserted on one side, close to the second connecting rod, of the first connecting rod, two ends of the third shaft pin are fixedly connected to opposite side walls of the brake support, a fifth shaft pin is fixedly inserted at the lower end of the second connecting rod, two ends of the fifth shaft pin are movably erected in inclined arc-shaped strip holes of the opposite side walls of the brake support, a third connecting rod and a brake reed which are arranged in a splayed shape are rotatably connected to the fifth shaft pins on two sides of the second connecting rod, a sixth shaft pin is movably inserted at the lower end of the third connecting rod, two ends of the sixth shaft pin are fixedly connected to the opposite side walls of the brake support, a first torsion spring is fixedly sleeved on the sixth shaft pin, and the lower end of the first torsion spring is prepressed to abut against a preset clamping groove of a bottom plate of the brake support, the upper end of the first torsion spring is pre-pressed on a fifth shaft pin, a seventh shaft pin is movably inserted on the lower side of the brake reed, two ends of the seventh shaft pin are movably erected in horizontal strip holes of opposite side walls of the brake bracket, the lower end of the brake reed is an arc brake piece and is arranged close to a front wheel, a front direction brake bolt seat is fixedly connected on the rear side of a front horizontal plate of the front T-shaped bottom plate, a front direction brake pin is movably inserted on the front direction brake bolt seat in a penetrating manner, a front reset spring is sleeved on the front direction brake pin positioned in the front direction brake bolt seat, two ends of the front reset spring are respectively pre-pressed and connected with the inner wall of the front direction brake bolt seat and the table wall of the front direction brake pin, and the outer end of the front direction brake pin is fixedly connected with a front direction brake pull wire joint through an eighth shaft pin, the front direction brake cable joint is provided with a front wheel direction brake cable interface, and the inner end of the front direction brake pin extending out of the front direction brake pin seat is in clamping fit with any one front positioning groove on the cylinder wall of the front bearing seat;

the rear shock absorption conversion rear idler wheel comprises a rear wheel, a rear connecting bolt is fixedly inserted in a central hole of a rear wheel bearing on the rear wheel, rear lever supports are symmetrically and fixedly connected to the rear connecting bolts on two sides of the rear wheel, a rear shock absorption mechanism is arranged at the rear part of each rear lever support, a rear step screw is movably inserted in the middle of each rear lever support, a rear side support is fixedly connected to the outer end of each rear step screw, a rear bearing seat is fixedly connected to the top of each rear side support, a rear positioning groove is formed in the circumferential direction of the cylinder wall of each rear bearing seat, a rear bearing is fixedly installed on the central hole of each rear bearing seat, a rear T-shaped bottom plate is fixedly installed in the central hole of each rear bearing and comprises a rear vertical rod and a rear horizontal plate fixed to the top end of the rear vertical rod, the front side surface and the rear side surface of each rear horizontal plate are fixedly connected with the bottom of a chassis frame, the rear vertical rod is in inserting fit with the central hole of each rear bearing, a rear braking pin seat is fixedly connected to the front side of each rear horizontal plate, a rear braking pin seat is movably inserted into a rear braking pin seat, the rear braking pin is sleeved on the rear braking pin seat, and connected with a rear braking pin joint, and a rear pin is movably inserted into a rear pin, and connected with a rear pin joint, and a rear pin is connected to a rear pin, and a rear pin joint is movably inserted into a rear pin, and a rear pin is connected to a rear pin, a rear pin is movably inserted into a rear pin joint is arranged on the rear pin, and connected to a rear pin, a rear joint, and a rear pin is arranged on the rear joint, and a rear pin, a rear pin is connected to the rear pin, a rear pin is movably inserted and a rear pin is connected to the rear pin, a rear joint is connected to the rear joint of the rear pin;

the roller control device comprises a pedal shell and a pedal shaft, the pedal shell is fixedly connected with the bottom of the chassis frame, the outer end of the pedal shaft is fixedly connected with a pedal, the pedal comprises a right pedal and a left pedal which are integrally formed, the front tractor can turn downwards to press the left pedal and the right pedal to enable the pedals to be in a horizontal state, the inner end of the pedal shaft extends into the front side wall of the pedal shell and is rotatably connected to the pedal shell, the inner end of the pedal shaft is fixedly connected with a driving wheel, driving teeth and recesses are arranged on the circumferential direction of the driving wheel, a positioning support is fixedly arranged on a bottom plate of the pedal shell on the right side of the driving wheel, a tenth shaft pin is fixedly connected between the front side wall of the pedal shell and the positioning support, a second torsion spring is fixedly sleeved on the tenth shaft pin, a positioning pressure rod is rotatably sleeved on the tenth shaft pin, and the positioning pressure rod can be rotated to be contacted and compressed with the middle part of the second torsion spring, an eleventh shaft pin is fixedly connected to the upper end of the positioning pressure lever, a first bearing is fixedly connected to the eleventh shaft pin, the surface of an outer ring of the first bearing can be matched with a recess in the circumferential direction of the driving wheel, a driven shaft is further rotatably connected to the front side wall and the rear side wall of the pedal shell on the left side of the driving wheel, driven teeth meshed with the driving teeth are circumferentially arranged on the driven shaft, a rear wheel crown switching swing arm and a front wheel brake swing arm are further fixedly sleeved on the driven shaft from front to back, the upper end of the rear wheel crown switching swing arm is rotatably connected with a rear wheel crown switching pull rod through a twelfth shaft pin, a rear wheel press line pin is fixed to the other end of the rear wheel crown switching pull rod, a rear wheel crown switching main pull line is connected to the rear wheel press line pin, and the other end of the rear wheel crown switching main pull line is connected to a rear wheel direction brake pull line interface, the upper end of the front wheel brake swing arm is rotationally connected with a front wheel brake pull rod through a thirteenth shaft pin, the other end of the front wheel brake pull rod is fixedly provided with a front wheel brake pressing line pin, the front wheel brake pressing line pin is connected with a front wheel brake main pull line, the other end of the front wheel brake main stay wire is connected on a front wheel brake stay wire interface, one side of the driven shaft close to the rear side wall of the pedal shell is fixedly sleeved with a cam, a U-shaped bracket is fixedly connected on the bottom plate of the pedal shell, the front wheel direction braking device is characterized in that a front wheel direction braking swing arm is rotatably connected to the U-shaped support through a fourteenth shaft pin, a bearing shaft pin is fixedly connected to the middle of the front wheel direction braking swing arm, a second bearing is fixedly sleeved on the bearing shaft pin, the surface of the outer ring of the second bearing can be in contact with a cam on a driven shaft, a front wheel direction braking line pressing pin is fixed to the upper end of the front wheel direction braking swing arm, a front wheel direction braking general line is connected to the front wheel direction braking line pressing pin, and the other end of the front wheel direction braking general line is connected to a front wheel direction braking line pulling interface.

Compared with the prior art, the mobile cargo carrying platform provided by the invention can control the front and rear rollers to be in three working states of a traction state, a stop state and a transverse state through the roller control device; wherein the content of the first and second substances,

the traction state is controlled as follows: the pedal is in a horizontal state, the rear wheel dead man conversion swing arm drives a rear wheel dead man conversion main stay wire connected with a rear wheel stay wire pin to be in a loose state through a rear wheel dead man conversion pull rod, and further a rear wheel direction brake stay wire interface is also in a loose state, at the moment, a rear reset spring resets to drive a ninth shaft pin and a rear direction brake pin to move towards the rear bearing seat, the rear direction brake pin can automatically return to a rear positioning groove of the rear bearing seat under the action of the structural design of the dead man conversion damping rear roller wheel as an eccentric wheel, at the moment, the rear bearing seat cannot rotate around a rear vertical rod of a rear T-shaped bottom plate in a central hole through a rear bearing due to the action of the rear direction brake pin, so that the rear wheel direction is in a braking state, namely, the rear wheel direction is not rotatable, and the rear roller at the moment is used as a directional wheel; meanwhile, on one hand, a front wheel brake swing arm drives a front wheel brake main pull wire connected to a front wheel brake pressing line pin to be in a release state through a front wheel brake pull rod, so that the front wheel brake pull rod is also in a release state, a first torsion spring is reset to drive a third connecting rod to rotate upwards around a sixth shaft pin, the third connecting rod drives a fifth shaft pin to move upwards to drive a brake spring to move upwards around the fifth shaft pin, meanwhile, a seventh shaft pin moves towards the direction far away from the front wheel in a horizontal strip hole to drive the brake spring to move towards the direction far away from the front wheel, so that the front wheel is released, meanwhile, the fifth shaft pin moves upwards to drive a second connecting rod and a fourth shaft pin to move upwards, the fourth shaft pin moves upwards to drive the first connecting rod and the second shaft pin to rotate downwards around the third shaft pin, so that an opening connecting block is driven to move downwards, a rack moves downwards to drive a gear to rotate, the gear rotates to drive the first shaft pin to rotate, and further drives the front wheel brake pull rod at the outer end of the first shaft pin to reset; meanwhile, on the other hand, the contact between the convex surface of the cam and the surface of the outer ring of the second bearing is in a critical contact state, namely the convex surface of the cam can be continuously contacted with the surface of the outer ring of the second bearing after the cam rotates clockwise for a preset angle, and the concave surface of the cam can be contacted with the surface of the outer ring of the second bearing after the cam rotates anticlockwise for a preset angle, the front wheel direction brake swing arm can not rotate in the critical contact state, the front wheel direction brake swing arm can drive the front wheel direction brake general stay wire to be continuously in a tensioning state through the front wheel direction brake line pressing pin, so that the front wheel direction brake line interface is pulled forcibly, the eighth shaft pin and the front wheel direction brake pin are driven to move away from the front bearing seat, and meanwhile, the front reset spring is squeezed to enable the front wheel direction brake pin to be separated from one front positioning groove of the front bearing seat, therefore, the front bearing seat can rotate around a front bearing positioned on a central hole of the front bearing seat, at the moment, the front wheel direction is in a loosening state, so that the front wheel direction is loosened, therefore, under the control of a traction state, namely the traction operation of normal running is met;

the control of the stop state is: the right pedal is stepped, the pedal shaft drives the driving wheel to rotate clockwise, the meshed driven shaft is driven to rotate anticlockwise through the clockwise rotation of the driving wheel, a rear wheel dead man switching swing arm on the driven shaft is further driven to rotate anticlockwise together with a front wheel brake swing arm and a cam, a rear wheel dead man switching swing arm rotates anticlockwise to drive a rear wheel dead man switching main pull wire connected with a rear wheel press wire pin through a rear wheel dead man switching pull rod to be in a release state, a rear wheel direction brake pull wire interface is further released, a rear return spring is reset to drive a ninth shaft pin and a rear direction brake pin to move towards the direction of a rear bearing seat, the rear direction brake pin can automatically return into a rear positioning groove of the rear bearing seat under the effect that the rear wheel is structurally designed for the eccentric wheel, the rear bearing seat cannot rotate around a rear vertical rod of a rear T-shaped bottom plate in a central hole through the rear direction brake pin, the rear wheel direction is in a brake state, namely, the orientation wheel in an initial state is unchanged, the direction of the rear wheel is not rotatable at the moment, and the rear wheel is used as an orientation wheel; the front wheel brake swing arm rotates anticlockwise to drive a front wheel brake main stay wire connected with a front wheel brake pressing wire pin to be in a tensioned state through a front wheel brake pull rod, so that the front wheel brake pull rod is also tensioned to drive a first shaft pin to rotate on a gear bracket, so that a gear on the first shaft pin is driven to rotate, the gear rotates to drive a meshed rack to move upwards, so that an opening connecting block at the lower end of the rack is driven to move upwards, the opening connecting block moves upwards to drive a second shaft pin to move upwards, so that the first connecting rod is driven to rotate upwards around a third shaft pin, a fourth shaft pin rotates downwards around a third shaft pin, the fourth shaft pin drives a second connecting rod to move downwards, so that a fifth shaft pin fixedly spliced at the lower end of the second connecting rod moves downwards, the fifth shaft pin moves downwards to drive a third connecting rod to rotate downwards around a sixth shaft pin, the sixth shaft pin rotates to drive a torsional spring fixedly sleeved on the sixth shaft pin to rotate, the torsional spring is in a tightened state, the fifth shaft pin moves downwards around a seventh shaft pin, and meanwhile, the seventh shaft pin moves forwards in the direction of the wheel to drive a brake reed, so that the front wheel brake reed is in a tensioned state; the cam rotates anticlockwise to drive the second bearing to rotate clockwise, the outer ring surface of the second bearing is contacted with the convex surface of the cam from the beginning and is finally contacted with the concave surface of the cam, at the moment, the front wheel direction brake swing arm changes the opposite clockwise direction to realize rotation, further, the front wheel direction brake swing arm drives a front wheel direction brake general pull wire to be in a release state through the front wheel direction brake line pressing pin, further, the front wheel direction brake line interface is released, the front reset spring resets to drive the front direction brake pin and the eighth shaft pin to move towards the front bearing seat, the front direction brake pin returns to one front positioning groove of the front bearing seat, at the moment, the front bearing seat cannot rotate around the front bearing on the central hole, the front wheel direction is in a brake state, the front wheel direction brake is realized, and the front wheel direction brake line interface reset are completed; meanwhile, the clockwise rotation of the driving wheel can drive the first bearing matched with the circumferential recess of the driving wheel to rotate, the outer ring surface of the first bearing is contacted with the recess from the beginning to the end to be contacted with the surface of the driving wheel, the positioning pressure rod rotates in the opposite clockwise direction at the moment, the positioning pressure rod rotates from the beginning without contacting with the middle part of the second torsion spring to be contacted and compressed, namely the second torsion spring is in a tightening state at the moment, therefore, under the control of a stop state, the rear wheel can be used as a directional wheel, and the front wheel and the wheel are both braked, so that the requirement that the front wheel and the rear wheel cannot move under the stop state is met;

the control of the transverse running state is as follows: the left pedal is stepped, the pedal shaft drives the driving wheel to rotate anticlockwise, the meshed driven shaft is driven to rotate clockwise through the anticlockwise rotation of the driving wheel, the rear wheel dead man switching swing arm, the front wheel brake swing arm and the cam on the driven shaft are further driven to rotate clockwise, the rear wheel dead man switching swing arm rotates clockwise to drive a rear wheel dead man switching main stay wire connected to a rear wheel stay wire pin through a rear wheel dead man switching pull rod to be in a tensioned state, then a rear wheel direction brake stay wire interface is pulled forcefully, the rear direction brake pin is driven to move towards a direction far away from a rear bearing seat through a ninth shaft pin, and meanwhile, a rear reset spring is extruded to enable the inner end of the rear direction brake pin to be separated from a rear positioning groove of the rear bearing seat, so that the rear bearing seat can rotate around a rear vertical rod of a rear T-shaped bottom plate located in a central hole through the rear bearing, the rear wheel direction is in a relaxed state, namely the rear wheel direction can rotate, and the rear wheel can be used as a universal wheel at present moment; the clockwise rotation of the front wheel brake swing arm drives a front wheel brake main stay wire connected to a front wheel brake pressing line pin to be in a release state through a front wheel brake pull rod, so that the front wheel brake pull rod is also in a release state, the first torsion spring is reset to drive a third connecting rod to rotate upwards around a sixth axis pin, the third connecting rod drives a fifth axis pin to move upwards to drive a brake spring to move upwards around the fifth axis pin, meanwhile, the seventh axis pin moves towards the direction far away from the front wheel in a horizontal strip hole to drive the brake spring to move towards the direction far away from the front wheel, so that the front wheel is released, meanwhile, the fifth axis pin moves upwards to drive a second connecting rod and a fourth axis pin to move upwards, the fourth axis pin moves upwards to drive the first connecting rod and the second axis pin to rotate downwards around the third axis pin to drive an opening connecting block to move downwards, the rack moves downwards through the opening connecting block to drive the gear to rotate, the gear rotates to drive the first axis pin to rotate, and further drive the front wheel brake pull rod at the outer end of the first axis pin to reset; and the cam rotates clockwise to drive the second bearing to rotate anticlockwise, and the outer ring surface of the second bearing is contacted with the convex surface of the cam from the beginning to be continuously contacted with the convex surface of the cam, at the moment, the front wheel direction braking swing arm can not rotate, and then the front wheel direction braking swing arm can drive the front wheel direction braking general stay wire to be continuously in a tensioning state through the front wheel direction braking line pressing pin, so as to realize that the front wheel direction braking line interface is pulled by force, further drive the eighth shaft pin and the front direction braking pin to move away from the front bearing seat, and simultaneously extrude the front reset spring to enable the front direction braking pin to be separated from one front positioning groove of the front bearing seat, therefore, the front bearing seat can rotate around the front bearing positioned on the center hole of the front bearing seat, at the moment, the front wheel direction is in a loosening state, the direction of the front wheel is loosened, so that the front wheel and the rear wheel are used as universal wheels, meanwhile, the first bearing matched with the circumferential depression of the driving wheel can be driven to rotate by anticlockwise rotation of the driving wheel, the outer ring surface of the first bearing is contacted with the depression from the beginning to the surface of the driving wheel finally, the positioning pressure rod is changed to rotate clockwise in the opposite direction, the positioning pressure rod is rotated from the beginning without being contacted with the middle part of the second torsion spring to be contacted and pressed with the middle part of the second torsion spring, namely, the second torsion spring is in a tightening state at the moment, therefore, under the control of a transverse state, the front wheel and the rear wheel are used as the universal wheels at the same time, the wheels can be transversely pushed to run under the transverse state, and the automobile assembly line can be used when the space of an assembly station is very narrow and can not enter through backing;

therefore, the present application can realize the fixed-position switching of the rear wheels, the bidirectional braking of the front wheel direction and the wheels by operating the pedal (similar to one-key control), and creatively provides and realizes the control of three working states of traction, stop and transverse movement, thereby meeting various operation requirements of the existing roller, having simple operation and reducing the labor intensity of operators; meanwhile, the front tractor in the roller control device can press the left pedal and the right pedal to enable the pedals to be in a horizontal state by turning downwards, so that the mobile cargo platform can be in a traction state by turning downwards the front tractor, and the front tractor is also in a downward turning state in a normal traction state, so that the condition that the roller is damaged by friction due to traction without canceling a brake wheel is avoided by ingenious design; in addition, the second torsional spring under stall condition and the state of violently going is in the state of turning round tightly, will increase the experience sense when operating pedal return to the horizontality, and when the sunken department of action wheel circumference was returned soon to first bearing outer lane surface, because the reset action of second torsional spring, will be fast to the first bearing bullet of fixing on the eleventh pivot back to the sunken department of action wheel circumference, the dynamics of operating pedal return will obviously reduce and can experience first bearing return this moment.

Further, preceding damper and back damper's structure is the same, preceding damper including shelve lever support rear portion in the front and with fore-stock support fixed connection's shock absorber support, shock absorber support's inside fixed mounting has the spring holder, the top activity lock joint of spring holder has the spring end cover, the surface of spring end cover is pegged graft through the bolt fastening has the spring pull rod, the lower extreme activity of spring pull rod is stretched out from the shock absorber support bottom after passing the spring holder, is located the damping spring has been cup jointed in the activity on the spring pull rod in the spring holder, stretches out the spring pull rod lower extreme and the sleeve fixed surface of shock absorber support bottom are connected, telescopic inside fixed cover has been connected with fixing bolt, fixing bolt's both ends are fixed to be pegged graft on the preceding lever support of preceding wheel both sides.

Furthermore, two cavities are arranged in the spring seat, and each cavity is internally provided with a spring pull rod in a penetrating mode.

Further, the lower extreme of rack is provided with the concave ring, the opening connecting block is including connecting dull and stereotyped and integrated into one piece in the connection curb plate of connecting the relative both sides of dull and stereotyped, set up the breach on the connection dull and stereotyped, it rotates the joint on the concave ring through this breach to connect the dull and stereotyped.

Further, the brake reed is made of 65Mn material.

Furthermore, the surfaces of the front horizontal plate and the rear horizontal plate are connected with a connecting top plate in a threaded mode, and the front side surface and the rear side surface of the connecting top plate are fixedly connected with the bottom of the chassis frame.

Further, fixedly connected with and preceding lateral wall vertically preceding connecting plate on the preceding lateral wall of footboard shell, the mounting hole has been seted up on the preceding connecting plate, a side fixedly connected with that preceding lateral wall was kept away from to preceding connecting plate is parallel with preceding lateral wall and is suitable for the supplementary backup plate that the footboard axle passed, fixedly connected with and the perpendicular back connecting plate of back lateral wall on the back lateral wall of footboard shell, the back mounting hole has been seted up on the back connecting plate.

Furthermore, a rear wheel constant conversion stay wire guide pipe suitable for a rear wheel constant conversion general stay wire to penetrate through is arranged on the left side wall of the pedal shell, and a front wheel braking stay wire guide pipe suitable for a front wheel braking general stay wire to penetrate through and a front wheel direction braking stay wire guide pipe suitable for a front wheel braking general stay wire to penetrate through are arranged on the right side wall of the pedal shell.

Further, a rear wheel dead man switching swing arm limiting block and a front wheel vehicle wheel braking swing arm limiting block are fixed on a bottom plate of the pedal shell, the height of the center of a front wheel vehicle wheel braking stay wire guide pipe and the height of the axis of a driven shaft are equal, the height of the front wheel vehicle wheel braking swing arm limiting block enables a front wheel vehicle wheel braking swing arm to brake a front wheel, the center of a fourth shaft pin is lower than the height of the axis of the driven shaft, the height of the center of a rear wheel dead man switching stay wire guide pipe and the height of the axis of the driven shaft are equal, the height of the rear wheel dead man switching swing arm limiting block enables a rear wheel dead man switching swing arm to relax in the direction of the rear wheel, and the center of a third shaft pin is lower than the height of the axis of the driven shaft.

Further, the bottom of the chassis frame is fixedly connected with a front wheel braking concentrator, a front wheel direction braking concentrator and a rear wheel direction-fixed conversion concentrator, a front wheel braking bus cable is connected with the input end of the front wheel braking concentrator, two output ends of the front wheel braking concentrator are connected with two front wheel braking cable interfaces through a front wheel braking cable, the front wheel direction braking bus cable is connected with the input end of the front wheel direction braking concentrator, two output ends of the front wheel direction braking concentrator are connected with two front wheel direction braking cable interfaces through a front wheel braking cable, a rear wheel direction-fixed conversion bus cable is connected with the input end of the rear wheel direction-fixed conversion concentrator, and two output ends of the rear wheel direction-fixed conversion concentrator are connected with two rear wheel direction braking cable interfaces through a rear wheel direction-fixed conversion cable.

Drawings

Fig. 1 is a side view of a mobile cargo platform according to the present invention.

Fig. 2 is a side view of the mobile cargo platform of the present invention without a pallet.

Fig. 3 is a schematic top view of the mobile cargo platform of the present invention without a pallet.

Fig. 4 is a schematic front view of the fully-controlled damping front roller in the mobile cargo platform provided by the invention.

Fig. 5 is a schematic sectional structure view of the fully-controlled damping front roller in fig. 4.

Fig. 6 is a schematic structural diagram of the fully-controlled damping front roller in fig. 4 after omitting a part of the structure.

Fig. 7 is a schematic structural diagram of a front damping mechanism of the fully-controlled damping front roller in fig. 4.

Fig. 8 is a schematic front view of a shock absorbing rear roller of the mobile cargo platform according to the present invention.

Fig. 9 is a schematic cross-sectional view of the damping-switched idler wheel in fig. 8.

Fig. 10 is a first side view of the roller control device of the mobile cargo platform of the present invention.

Fig. 11 is a second side view of the roller control device of the mobile cargo platform of the present invention.

Fig. 12 is a third side view of the roller control device of the mobile cargo platform according to the present invention.

Fig. 13 is a fourth side view of the roller control device of the mobile cargo platform of the present invention.

In the figure, 1, a chassis frame; 2. a support plate; 3. a handrail; 4. a front tractor; 5. a rear tractor; 6. connecting the top plate; 7. a front wheel brake hub; 8. a front wheel direction brake concentrator; 9. a rear wheel fixed conversion line concentration box; 10. comprehensively controlling a shock-absorbing front roller; 101. a front wheel; 102. a front wheel bearing; 103. a front connecting bolt; 104. a front lever bracket; 105. a front step screw; 106. a front side bracket; 107. a brake bracket; 1071. a vertical bar hole; 1072. inclining the arc-shaped strip hole; 1073. horizontal bar holes; 108. a front bearing seat; 1081. a front positioning groove; 109. a front bearing; 110. a front T-shaped bottom plate; 1101. a front vertical rod; 1102. a front horizontal plate; 111. a gear bracket; 112. a first shaft pin; 113. a gear; 114. a front wheel brake lever; 1141. a front wheel vehicle wheel brake cable interface; 115. a rack; 116. an opening connecting block; 117. a second shaft pin; 118. a first link; 119. a fourth shaft pin; 120. a second link; 121. a third shaft pin; 122. a fifth shaft pin; 123. a third link; 124. a brake reed; 125. a sixth shaft pin; 126. a first torsion spring; 127. a seventh axle pin; 128. the front direction brakes the bolt seat; 129. a forward direction brake pin; 130. a front return spring; 131. a front eighth axle pin; 132. a front direction brake cable joint; 1321. a front wheel direction brake stay wire interface; 133. a shock-absorbing support; 134. a spring seat; 135. a spring end cap; 136. a spring pull rod; 137. a damping spring; 138. a sleeve; 139. fixing the bolt; 20. a fixed pulley is converted into a damping rear roller; 201. a rear wheel; 202. a rear wheel bearing; 203. a rear connecting bolt; 204. a rear lever bracket; 205. a back step screw; 206. a rear side bracket; 207. a rear bearing seat; 2071. a rear positioning groove; 208. a rear bearing; 209. a rear T-shaped bottom plate; 2091. a rear vertical rod; 2092. a rear horizontal plate; 210. the rear direction brakes the bolt seat; 211. a rear direction stopper pin; 212. a rear return spring; 213. a ninth shaft pin; 214. a rear direction brake cable joint; 2141. a rear wheel direction brake stay wire interface; 30. a roller control device; 301. a pedal housing; 3011. a front connecting plate; 30111. a front mounting hole; 3012. an auxiliary support plate; 3013. a rear connecting plate; 30131. a rear mounting hole; 3014. a rear wheel fixed conversion stay wire conduit; 3015. a front wheel vehicle wheel brake cable guide pipe; 3016. a front wheel direction brake cable guide pipe; 302. a pedal shaft; 303. a pedal; 3031. a right pedal; 3032. a left pedal; 304. a driving wheel; 3041. a driving tooth; 3042. recessing; 305. positioning the bracket; 306. a tenth shaft pin; 307. a second torsion spring; 308. positioning the compression bar; 309. an eleventh axle pin; 310. a first bearing; 311. a driven shaft; 3111. a driven tooth; 312. the rear wheel is provided with a fixed conversion swing arm; 313. a front wheel brake swing arm; 314. a twelfth axis pin; 315. a rear wheel is provided with a fixed conversion pull rod; 316. a rear wheel wire pressing pin; 317. a rear wheel fixed universal conversion general stay wire; 3171. a rear wheel fixing conversion pull wire; 318. a thirteenth shaft pin; 319. a front wheel brake lever; 320. a brake line pressing pin of a front wheel vehicle wheel; 321. a front wheel vehicle wheel braking main pull wire; 3211. a front wheel brake cable; 322. a cam; 323. a U-shaped bracket; 324. a fourteenth axis pin; 325. the front wheel direction braking swing arm; 326. a bearing pin; 327. a second bearing; 328. a front wheel direction brake line pressing pin; 329. a main pull line is braked in the direction of the front wheel; 3291. a front wheel direction brake pull wire; 330. a rear wheel fixed swing arm conversion limiting block; 331. the front wheel vehicle wheel brakes the swing arm limited block.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.

In the description of the present invention, it is to be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified. In the description of the present invention, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and encompass, for example, fixed connections, detachable connections, and integral connections unless expressly stated or limited otherwise; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 13, the present invention provides a mobile cargo carrying platform, including a chassis frame 1, a pallet 2 fixed on a surface of the chassis frame 1, a handrail 3 fixedly connected to a front sidewall of the chassis frame 1, and a front tractor 4 rotatably connected to the front sidewall, and a rear tractor 5 fixedly connected to a rear sidewall, wherein specific structures of the front tractor 4 and the rear tractor 5 are known to those skilled in the art, and are not described herein again, two ends of a bottom front side of the chassis frame 1 are fixedly connected with a fully-controlled shock-absorbing front roller 10, two ends of a bottom rear side of the chassis frame 1 are fixedly connected with a fully-controlled shock-absorbing rear roller 20, and a roller control device 30 is fixedly connected to a bottom front side of the chassis frame 1; wherein, the first and the second end of the pipe are connected with each other,

the fully-controlled shock-absorbing front roller 10 comprises a front wheel 101, a front connecting bolt 103 is fixedly inserted into a central hole of a front wheel bearing 102 on the front wheel 101, front lever brackets 104 are symmetrically and fixedly connected to the front connecting bolts 103 on two sides of the front wheel 101, a front shock-absorbing mechanism is arranged at the rear part of the front lever bracket 104, a front step screw 105 is movably inserted into the middle part of the front lever bracket 104, a front side bracket 106 is fixedly connected to the outer end of the front step screw 105, namely, side brackets 106 are arranged on the left side and the right side of the wheel 101, a brake bracket 107 fixedly connected with the front side bracket is clamped inside the front side bracket 106, a front bearing seat 108 is fixedly connected to the top of the front side bracket 106, a plurality of front positioning grooves 1081 are circumferentially arranged on the cylinder wall of the front bearing seat 108, and a front bearing 109 is fixedly arranged on the central hole of the front bearing seat 108, a front vertical rod 1101 of the front T-shaped bottom plate 110 is fixedly inserted and matched in a central hole of the front bearing 109, a gear support 111 is fixedly installed on a front horizontal plate 1102 of the front T-shaped bottom plate 110, and the surface of the front horizontal plate 1102 on the front side and the rear side of the gear support is fixedly connected with the bottom of the chassis frame 1, that is, the front T-shaped bottom plate 110 comprises a front vertical rod 1101 and the front horizontal plate 1102 fixed at the top end of the front vertical rod 1101, a first shaft pin 112 is rotatably connected on the gear support 111, a gear 113 is fixedly sleeved on the first shaft pin 112 positioned in the gear support 111, a front wheel brake pull rod 114 is fixedly sleeved on the first shaft pin 112 positioned outside the gear support 111, a front wheel brake pull wire interface 1141 is arranged on the front wheel brake pull rod 114, a rack 115 is engaged on the gear 113, and the lower end of the rack 115 passes through the central hole on the front vertical rod of the front T-shaped bottom plate and extends out of the bottom of the front vertical rod 1101, an open connecting block 116 is rotatably clamped at the lower end of the rack 115, a second shaft pin 117 is fixedly inserted in the open connecting block 116, two ends of the second shaft pin 117 are movably erected in vertical strip holes 1071 of opposite side walls of the brake support 107, a first connecting rod 118 is movably connected to the second shaft pin 117, a fourth shaft pin 119 is movably sleeved at the other end of the first connecting rod 118, a second connecting rod 120 is fixedly connected to the fourth shaft pin 119, a third shaft pin 121 is movably inserted in one side of the first connecting rod 118 close to the second connecting rod 120, two ends of the third shaft pin 121 are fixedly connected to opposite side walls of the brake support 107, a fifth shaft pin 122 is fixedly inserted in the lower end of the second connecting rod 120, two ends of the fifth shaft pin 122 are movably erected in inclined arc strip holes 1072 of opposite side walls of the brake support 107, a third connecting rod 123 and a braking spring plate 124 which are arranged in a splayed shape are rotatably connected to a fifth shaft pin 122 on two sides of the second connecting rod 120, a sixth shaft pin 125 is movably inserted at the lower end of the third connecting rod 123, two ends of the sixth shaft pin 125 are fixedly connected to opposite side walls of the brake bracket 107, a first torsion spring 126 is fixedly connected to the sixth shaft pin 125, the lower end of the first torsion spring 126 is pre-pressed against a preset clamping groove of a bottom plate of the brake bracket 107, the upper end of the first torsion spring 126 is pre-pressed against the fifth shaft pin 122, a seventh shaft pin 127 is movably inserted at the lower side of the braking spring plate 124, two ends of the seventh shaft pin 127 are movably erected in horizontal bar holes 1073 of the opposite side walls of the brake bracket 107, the lower end of the braking spring plate 124 is an arc-shaped brake pad and is arranged close to the front wheel 101, a front direction braking pin seat 128 is fixedly connected to the rear side of a front horizontal plate 1102 of the front T-shaped bottom plate 110, a front brake pin 129 is movably inserted in the front brake pin seat 128, a front return spring 130 is sleeved on the front brake pin 129 positioned in the front brake pin seat 128, two ends of the front return spring 130 are respectively connected with the inner wall of the front brake pin seat and the table wall of the front brake pin in a pre-pressing manner, the outer end of the front brake pin 129 is fixedly connected with a front brake cable connector 132 through an eighth shaft pin 131, a front wheel direction brake cable connector 1321 is arranged on the front brake cable connector 132, and the inner end of the front brake pin 129 extending out of the front brake pin seat 128 is in clamping fit with any one front positioning groove 1081 on the front bearing block wall;

the damping rear idler wheel 20 comprises a rear wheel 201, a rear connecting bolt 203 is fixedly inserted into a central hole of a rear wheel bearing 202 on the rear wheel 201, rear lever brackets 204 are symmetrically and fixedly connected to the rear connecting bolt 203 on both sides of the rear wheel 201, a rear damping mechanism is arranged at the rear part of the rear lever bracket 204, a rear step screw 205 is movably inserted into the middle part of the rear lever bracket 204, a rear side bracket 206 is fixedly connected to the outer end of the rear step screw 205, namely, rear side brackets 206 are arranged on both the left and right sides of the rear wheel 201, a rear bearing seat 207 is fixedly connected to the top part of the rear side bracket 206, a rear positioning groove 2071 is circumferentially arranged on the rear bearing seat 207, a rear bearing 208 is fixedly installed on the central hole of the rear bearing seat 207, a rear T-shaped bottom plate 209 is fixed in the central hole of the rear bearing 208, the rear T-shaped bottom plate 209 comprises a rear vertical rod 2091 and a rear horizontal plate 2 fixed at the top end of the rear vertical rod, the front and rear horizontal plate 2092 is fixed to the bottom of a brake pull wire 210, a brake pull wire 210 is fixedly connected to the rear pin 210, a brake pull wire 210, a brake pin 210 is fixedly connected to the rear horizontal plate 210, a brake pin 210 is connected to the rear pin 210, a brake pin 210 is connected to a brake pin 210, a brake pin connector 210 is fixedly connected to the rear horizontal pin 210, a brake pin 210 is arranged on the rear pin 210, a brake pin 210 is connected to the rear pin 210, the inner end of the rear direction brake pin 211 extending out of the rear direction brake pin base 210 can extend into a rear positioning groove 2071 on the cylinder wall of the rear bearing block 207 for clamping fit;

the roller control device 30 includes a pedal housing 301 and a pedal shaft 302, the pedal housing 301 is fixedly connected to the bottom of the chassis frame 1, the outer end of the pedal shaft 302 is fixedly connected to a pedal 303, the pedal 303 includes a right pedal 3031 and a left pedal 3032 which are integrally formed, the front tractor 4 can turn downwards to press the left pedal and the right pedal to make the pedal 303 in a horizontal state, the inner end of the pedal shaft 302 extends into the front side wall of the pedal housing 301 and is rotatably connected to the pedal housing 301, the inner end of the pedal shaft 302 is fixedly connected to a driving wheel 304, the driving wheel 304 is circumferentially provided with a driving tooth 3041 and a recess 3042, a positioning support 305 is fixedly arranged on the bottom plate of the pedal housing 301 on the right side of the driving wheel 304, a tenth shaft pin 306 is fixedly connected between the front side wall of the pedal housing 301 and the positioning support 305, the tenth shaft pin 306 is fixedly sleeved with a second torsion spring 307 and rotatably sleeved with a positioning compression rod 308, the positioning compression rod 308 can rotate to contact and compress with the middle part of the second torsion spring 307, the upper end of the positioning compression rod 308 is fixedly connected with an eleventh shaft pin 309, the eleventh shaft pin 309 is fixedly connected with a first bearing 310, the outer ring surface of the first bearing 310 can be matched with a recess 3042 on the circumference of the driving wheel 304, the front and back side walls of the pedal shell 301 on the left side of the driving wheel 304 are also rotatably connected with driven shafts 311, the circumference of the driven shafts 311 is provided with driven teeth 3111 engaged with the driving teeth 3041, the driven shafts 311 are also fixedly sleeved with a rear wheel stabilizer switching swing arm 312 and a front wheel brake swing arm 313 from front to back, the upper end of the rear wheel stabilizer switching swing arm 312 is rotatably connected with a rear wheel stabilizer switching pull rod 315 through a twelfth shaft pin 314, and the other end of the rear wheel stabilizer switching pull rod 315 is fixedly provided with a rear wheel press line pin 316, the rear wheel brake line pin 316 is connected with a rear wheel universal conversion main pull line 317, the other end of the rear wheel universal conversion main pull line 317 is connected with a rear wheel direction brake line interface 2141, the upper end of the front wheel brake swing arm 313 is rotationally connected with a front wheel brake pull rod 319 through a thirteenth shaft pin 318, the other end of the front wheel brake pull rod 319 is fixed with a front wheel brake line pin 320, the front wheel brake line pin 320 is connected with a front wheel brake main pull line 321, the other end of the front wheel brake main pull line 321 is connected with a front wheel brake line interface 1141, one side of the rear side wall of the pedal shell 301 close to the driven shaft 311 is fixedly provided with a cam 322, the bottom plate of the pedal shell 301 is fixedly connected with a U-shaped support 323, the U-shaped support 323 is rotationally connected with a front wheel direction brake swing arm 325 through a fourteenth shaft pin 324, the middle part of the front wheel direction brake swing arm 325 is fixedly connected with a bearing shaft pin 326, the bearing shaft pin 326 is connected with a second shaft bearing pin 326, the surface of the outer ring of the bearing pin 326 can be in contact with the cam 322 on the outer ring of the driven shaft 311, the front wheel brake swing arm 328, the upper end of the front wheel brake line pin 328 is fixedly connected with a front wheel brake line brake main pull pin 328, and the front wheel brake line interface 329 is connected with the front wheel brake line interface 329 in the front wheel brake line direction of the front wheel brake main pull pin 328, and the front wheel brake line direction brake line interface 329.

the control of the stop state is: the right pedal is stepped, the pedal shaft drives the driving wheel to rotate clockwise, the meshed driven shaft is driven to rotate anticlockwise through the clockwise rotation of the driving wheel, a rear wheel dead man switching swing arm on the driven shaft is further driven to rotate anticlockwise together with a front wheel brake swing arm and a cam, a rear wheel dead man switching swing arm rotates anticlockwise to drive a rear wheel dead man switching main pull wire connected with a rear wheel press wire pin through a rear wheel dead man switching pull rod to be in a release state, a rear wheel direction brake pull wire interface is further released, a rear return spring is reset to drive a ninth shaft pin and a rear direction brake pin to move towards the direction of a rear bearing seat, the rear direction brake pin can automatically return into a rear positioning groove of the rear bearing seat under the effect that the rear wheel is structurally designed for the eccentric wheel, the rear bearing seat cannot rotate around a rear vertical rod of a rear T-shaped bottom plate in a central hole through the rear direction brake pin, the rear wheel direction is in a brake state, namely, the orientation wheel in an initial state is unchanged, the direction of the rear wheel is not rotatable at the moment, and the rear wheel is used as an orientation wheel; the front wheel brake swing arm rotates anticlockwise to drive a front wheel brake main stay wire connected with a front wheel brake pressing wire pin to be in a tensioned state through a front wheel brake pull rod, so that the front wheel brake pull rod is also tensioned to drive a first shaft pin to rotate on a gear bracket, so that a gear on the first shaft pin is driven to rotate, the gear rotates to drive a meshed rack to move upwards, so that an opening connecting block at the lower end of the rack is driven to move upwards, the opening connecting block moves upwards to drive a second shaft pin to move upwards, so that the first connecting rod is driven to rotate upwards around a third shaft pin, a fourth shaft pin rotates downwards around a third shaft pin, the fourth shaft pin drives a second connecting rod to move downwards, so that a fifth shaft pin fixedly spliced at the lower end of the second connecting rod moves downwards, the fifth shaft pin moves downwards to drive a third connecting rod to rotate downwards around a sixth shaft pin, the sixth shaft pin rotates to drive a torsional spring fixedly sleeved on the sixth shaft pin to rotate, the torsional spring is in a tightened state, the fifth shaft pin moves downwards around a seventh shaft pin, and meanwhile, the seventh shaft pin moves forwards in the direction of the wheel to drive a brake reed, so that the front wheel brake reed is in a tensioned state; the cam rotates anticlockwise to drive the second bearing to rotate clockwise, the outer ring surface of the second bearing is initially contacted with the convex surface of the cam and finally contacted with the concave surface of the cam, at the moment, the front wheel direction braking swing arm changes to rotate in the opposite clockwise direction, and further the front wheel direction braking swing arm drives the front wheel direction braking main stay wire to be in a release state through the front wheel direction braking line pressing pin, so that the front wheel direction braking line connection port is released, the front reset spring resets to drive the front direction braking pin and the eighth shaft pin to move towards the front bearing seat, the front direction braking pin returns to one front positioning groove of the front bearing seat, at the moment, the front bearing seat cannot rotate around the front bearing on the central hole, the front wheel direction is in a braking state, the front wheel direction braking is realized, and the front wheel direction braking line connection port resetting are completed; meanwhile, the clockwise rotation of the driving wheel can drive the first bearing matched with the circumferential recess of the driving wheel to rotate, the outer ring surface of the first bearing is contacted with the recess from the beginning to the end to be contacted with the surface of the driving wheel, the positioning pressure rod rotates in the opposite clockwise direction at the moment, the positioning pressure rod rotates from the beginning without contacting with the middle part of the second torsion spring to be contacted and compressed, namely the second torsion spring is in a tightening state at the moment, therefore, under the control of a stop state, the rear wheel can be used as a directional wheel, and the front wheel and the wheel are both braked, so that the requirement that the front wheel and the rear wheel cannot move under the stop state is met;

the control of the transverse running state is as follows: the left pedal is stepped, the pedal shaft drives the driving wheel to rotate anticlockwise, the meshed driven shaft is driven to rotate clockwise through the anticlockwise rotation of the driving wheel, the rear wheel dead man switching swing arm, the front wheel brake swing arm and the cam on the driven shaft are further driven to rotate clockwise, the rear wheel dead man switching swing arm rotates clockwise to drive a rear wheel dead man switching main stay wire connected to a rear wheel stay wire pin through a rear wheel dead man switching pull rod to be in a tensioned state, then a rear wheel direction brake stay wire interface is pulled forcefully, the rear direction brake pin is driven to move towards a direction far away from a rear bearing seat through a ninth shaft pin, and meanwhile, a rear reset spring is extruded to enable the inner end of the rear direction brake pin to be separated from a rear positioning groove of the rear bearing seat, so that the rear bearing seat can rotate around a rear vertical rod of a rear T-shaped bottom plate located in a central hole through the rear bearing, the rear wheel direction is in a relaxed state, namely the rear wheel direction can rotate, and the rear wheel can be used as a universal wheel at present moment; the clockwise rotation of the front wheel brake swing arm drives a front wheel brake main stay wire connected to a front wheel brake pressing line pin to be in a release state through a front wheel brake pull rod, so that the front wheel brake pull rod is also in a release state, the first torsion spring is reset to drive a third connecting rod to rotate upwards around a sixth axis pin, the third connecting rod drives a fifth axis pin to move upwards to drive a brake spring to move upwards around the fifth axis pin, meanwhile, the seventh axis pin moves towards the direction far away from the front wheel in a horizontal strip hole to drive the brake spring to move towards the direction far away from the front wheel, so that the front wheel is released, meanwhile, the fifth axis pin moves upwards to drive a second connecting rod and a fourth axis pin to move upwards, the fourth axis pin moves upwards to drive the first connecting rod and the second axis pin to rotate downwards around the third axis pin to drive an opening connecting block to move downwards, the rack moves downwards through the opening connecting block to drive the gear to rotate, the gear rotates to drive the first axis pin to rotate, and further drive the front wheel brake pull rod at the outer end of the first axis pin to reset; and the cam rotates clockwise to drive the second bearing to rotate anticlockwise, and the outer ring surface of the second bearing is contacted with the convex surface of the cam from the beginning to be continuously contacted with the convex surface of the cam, at the moment, the front wheel direction braking swing arm can not rotate, and then the front wheel direction braking swing arm can drive the front wheel direction braking general stay wire to be continuously in a tensioning state through the front wheel direction braking line pressing pin, so as to realize that the front wheel direction braking line interface is pulled by force, further drive the eighth shaft pin and the front direction braking pin to move away from the front bearing seat, and simultaneously extrude the front reset spring to enable the front direction braking pin to be separated from one front positioning groove of the front bearing seat, therefore, the front bearing seat can rotate around the front bearing positioned on the center hole of the front bearing seat, at the moment, the front wheel direction is in a loosening state, the front wheel direction is loosened, so that the front wheel and the rear wheel are used as universal wheels, meanwhile, the driving wheel rotates anticlockwise to drive the first bearing matched with the circumferential depression of the driving wheel to rotate, the outer ring surface of the first bearing is contacted with the depression from the beginning to the surface of the driving wheel finally, the positioning pressure rod rotates clockwise in opposite direction at the moment, the positioning pressure rod rotates from the beginning without contacting with the middle part of the second torsion spring to be contacted and pressed tightly, namely, the second torsion spring is in a tightening state at the moment, therefore, under the control of a transverse running state, the front wheel and the rear wheel are used as the universal wheels at the same time, the wheels can be transversely pushed to run under the transverse running state, and the universal wheels can be used when the space of an assembly station of an automobile assembly line is very narrow and can not enter through backing;

As a specific embodiment, please refer to fig. 4 and 7, the front shock absorbing mechanism and the rear shock absorbing mechanism have the same structure, the front shock absorbing mechanism includes a shock absorbing bracket 133 which is placed at the rear of the front lever bracket 104 and is fixedly connected with the front side bracket 106, a spring seat 134 is fixedly installed inside the shock absorbing bracket 133, a spring end cover 135 is movably fastened at the top end of the spring seat 134, a spring pull rod 136 is fixedly inserted into the surface of the spring end cover 135 through a bolt, the lower end of the spring pull rod 136 movably penetrates through the spring seat 134 and extends out from the bottom of the shock absorbing bracket 133, a shock absorbing spring 137 is movably sleeved on the spring pull rod 136 located inside the spring seat 134, that is, two ends of the shock absorbing spring 137 are respectively connected to the inner surface of the spring seat 134 and the lower surface of the spring end cover 135, the lower end of the spring pull rod 136 extending out of the bottom of the shock absorbing bracket 133 is fixedly connected to the surface of a sleeve 138, a fixing bolt 139 is connected inside the sleeve 138, and two ends of the fixing sleeve 139 are fixedly inserted into the front lever bracket 104 at two sides of the front wheel 10. By adopting the damping mechanism provided in the embodiment, when the front wheel 101 is suddenly lifted due to uneven ground, the front end of the front lever bracket 104 fixedly connected with the front wheel 101 is driven to move upwards, so as to drive the rear end of the front lever bracket 104 to move downwards around the front step screw 105, the rear end of the front lever bracket 104 moves downwards to drive the fixing bolt 139 to move downwards, so as to sequentially drive the sleeve 138 and the spring pull rod 136 on the fixing bolt 139 to move downwards, the spring pull rod 136 moves downwards to drive the spring end cover 135 to move downwards, so as to extrude the damping spring 137 through the lower surface of the spring end cover 135, and vice versa; the rear wheels 201 have the same shock absorbing principle as the front wheels 101 and will not be described in detail herein. On the basis of the embodiment, those skilled in the art can also adopt other shock absorption structures to implement the invention.

As a specific embodiment, please refer to fig. 7, two chambers are disposed in the spring seat 134, a spring pull rod 136 penetrates through each chamber, and correspondingly, a damping spring 137 is movably sleeved on each spring pull rod 136 located in the spring seat 134, so as to achieve balanced damping when the damping function is achieved.

As a specific embodiment, please refer to fig. 5, a concave ring is disposed at a lower end of the rack 115, the open connection block 116 includes a connection flat plate and connection side plates integrally formed at two opposite sides of the connection flat plate, a gap is disposed on the connection flat plate, and the connection flat plate is rotatably clamped on the concave ring through the gap, so that the clamping fit between the rack 115 and the open connection block 116 is achieved.

As a specific embodiment, the brake spring 124 is made of 65Mn material, that is, the front wheel 101 is braked by 65Mn spring steel, so that it can be ensured that after the brake spring 124 completes braking the front wheel 101, elasticity or deformation can be rapidly recovered, and rapid and effective braking can be achieved while high flexibility and plasticity are provided.

As a specific embodiment, referring to fig. 2, a connecting top plate 6 is screwed to the surfaces of the front horizontal plate 1102 and the rear horizontal plate 2092, and the front and rear side surfaces of the connecting top plate 6 are fixedly connected to the bottom of the chassis frame 1 by welding, so as to fixedly connect the fully-controlled shock-absorbing front roller 10 and the infinitesimal-conversion shock-absorbing rear roller 20 to the chassis frame 1.

As a specific embodiment, referring to fig. 10 to 13, a front connecting plate 3011 perpendicular to the front side wall is fixedly connected to the front side wall of the pedal housing 301, a front mounting hole 30111 is formed in the front connecting plate 3011, an auxiliary supporting plate 3012 parallel to the front side wall and suitable for the pedal shaft 302 to pass through is fixedly connected to one side of the front connecting plate 3011 away from the front side wall, a rear connecting plate 3013 perpendicular to the rear side wall is fixedly connected to the rear side wall of the pedal housing 301, and a rear mounting hole 30131 is formed in the rear connecting plate 3013, so that the entire pedal housing 301 can be screwed to the chassis frame 1 of the mobile container such as the mobile cargo platform through the front mounting hole 30111 in the front connecting plate 3011 and the rear mounting hole 30131 in the rear connecting plate 3013, and the auxiliary supporting plate 3012 can make the operation more stable when the left and right pedals are stepped on.

As a specific embodiment, please refer to fig. 10 to 13, a rear wheel immortal switching cable guide 3014 suitable for a rear wheel immortal switching total cable 317 to pass through is disposed on the left side wall of the pedal housing 301, and a front wheel brake cable guide 3015 suitable for a front wheel brake total cable 321 to pass through and a front wheel direction brake cable guide 3016 suitable for a front wheel brake total cable 329 to pass through are disposed on the right side wall of the pedal housing 301, so that the routing arrangement of various cables can be more reasonable and more beautiful.

As a specific embodiment, referring to fig. 10 to 13, a rear wheel immobilizer swing arm stopper 330 and a front wheel brake swing arm stopper 331 are fixed to a bottom plate of the pedal housing 301, so that rotation angles of the rear wheel immobilizer swing arm 312 and the front wheel brake swing arm 313 can be limited and self-locked, a height of a center of the front wheel brake cable conduit 3015 is equal to a height of an axis of the driven shaft 311, a height of the front wheel brake swing arm stopper 331 is such that the front wheel brake swing arm 313 brakes the front wheel axle pin 101, and a center of the thirteenth wheel brake swing arm 318 is lower than the height of the axis of the driven shaft 311, so that the front wheel brake swing arm 313 can continue to rotate downward when rotating to the height of the axis of the driven shaft, that is, an upper end of the front wheel brake swing arm 313 can rotate to below the axis of the driven shaft, so that the front wheel brake swing arm 313 plays a self-locking role, and the front wheel brake main cable 321 is kept taut, thereby keeping the front wheel in a braking state; the height of the center of the rear wheel dead man switching stay wire conduit 3014 is equal to the height of the axle center of the driven shaft 311, the height of the rear wheel dead man switching swing arm limiting block 330 is such that after the rear wheel dead man switching swing arm 312 is in the direction of loosening the rear wheel, the center of the twelfth axle pin 314 is lower than the height of the axle center of the driven shaft 311, so that the rear wheel dead man switching swing arm 312 can continue to rotate downwards when rotating to the height position of the axle center of the driven shaft, that is, the upper end of the rear wheel dead man switching swing arm 312 can rotate to be lower than the axle center line of the driven shaft, so that the rear wheel dead man switching swing arm 312 has a self-locking function, the rear wheel dead man switching total stay wire 317 is kept tensioned, and the rear wheel is kept in a universal state.

As a specific embodiment, referring to fig. 3, a front wheel brake cluster 7, a front wheel direction brake cluster 8 and a rear wheel steering cluster 9 are fixedly connected to the bottom of the chassis frame 1, the front wheel brake general pull wire 321 is connected with the input end of the front wheel brake cable concentrator 7, the two output ends of the front wheel vehicle wheel brake cable collecting box 7 are connected with two front wheel vehicle wheel brake cable interfaces 1141 through a front wheel vehicle wheel brake cable 3211, namely, the front wheel brake general stay 321 is converted into two front wheel brake stay 3211 after passing through the front wheel brake hub box 7 to respectively brake and release the wheels of the fully-controlled shock-absorbing front roller 10 at the two ends of the front side of the bottom of the chassis frame 1, the front wheel direction brake general pull wire 329 is connected with the input end of the front wheel direction brake line concentration box 8, two output ends of the front wheel direction brake cable concentration box 8 are connected with two front wheel direction brake cable interfaces 1321 through a front wheel direction brake cable 3291, namely, after passing through the front wheel direction brake line concentration box 8, the front wheel direction brake general line 329 is converted into two front wheel direction brake lines 3291 to respectively brake and release the direction of the fully-controlled shock-absorbing front roller 10 at the two ends of the bottom front side of the chassis frame 1, the rear wheel fixed universal conversion general stay 317 is connected with the input end of the rear wheel fixed universal conversion concentrator 9, the two output ends of the rear wheel fixed conversion line concentration box 9 are connected with two rear wheel direction brake line interfaces 2141 through rear wheel fixed conversion line 3171, namely, the rear wheel fixed conversion general pull wire 317 passes through the rear wheel fixed conversion cluster box 9, and then is converted into two rear wheel fixed conversion pull wires 3171 to respectively brake and release the directions of the fixed conversion damping rear rollers 20 at the two ends of the rear side of the bottom of the chassis frame 1.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A mobile cargo carrying platform comprises a chassis frame, wherein a supporting plate is fixed on the surface of the chassis frame, the front side wall of the chassis frame is fixedly connected with a handrail and is rotatably connected with a front tractor, and the rear side wall of the chassis frame is fixedly connected with a rear tractor; wherein the content of the first and second substances,

the fully-controlled shock-absorbing front roller comprises a front wheel, a front connecting bolt is fixedly inserted in a central hole of a front wheel bearing on the front wheel, front lever supports are symmetrically and fixedly connected to the front connecting bolts on two sides of the front wheel, a front shock-absorbing mechanism is arranged at the rear part of each front lever support, a front step screw is movably inserted in the middle of each front lever support, a front side support is fixedly connected to the outer end of each front step screw, a brake support fixedly connected with the front side support is clamped in the front side support, a front bearing seat is fixedly connected to the top of each front side support, a plurality of front positioning grooves are circumferentially arranged on the cylinder wall of each front bearing seat, a front bearing is fixedly mounted in the central hole of each front bearing, and a front vertical rod of a front T-shaped bottom plate is fixedly inserted and matched in the central hole of each front bearing, a gear support is fixedly arranged on a front horizontal plate of the front T-shaped bottom plate, the surface of the front horizontal plate on the front side and the rear side of the gear support is fixedly connected with the bottom of the chassis frame, a first shaft pin is rotatably connected to the gear support, a gear is fixedly sleeved on the first shaft pin inside the gear support, a front wheel brake pull rod is fixedly sleeved on the first shaft pin outside the gear support, a front wheel brake pull wire interface is arranged on the front wheel brake pull rod, a rack is meshed to the gear, the lower end of the rack penetrates through a central hole in a front vertical rod of the front T-shaped bottom plate and extends out of the bottom of the front vertical rod, an open connecting block is rotatably clamped at the lower end of the rack, a second shaft pin is fixedly inserted and connected to the open connecting block, two ends of the second shaft pin are movably erected in vertical strip holes in opposite side walls of the brake support, and the first connecting rod is movably connected to the second shaft pin, a fourth shaft pin is movably sleeved on the other end of the first connecting rod, a second connecting rod is fixedly connected to the fourth shaft pin, a third shaft pin is movably inserted on one side, close to the second connecting rod, of the first connecting rod, two ends of the third shaft pin are fixedly connected to opposite side walls of the brake support, a fifth shaft pin is fixedly inserted at the lower end of the second connecting rod, two ends of the fifth shaft pin are movably erected in inclined arc-shaped strip holes of the opposite side walls of the brake support, a third connecting rod and a brake reed which are arranged in a splayed shape are rotatably connected to the fifth shaft pins on two sides of the second connecting rod, a sixth shaft pin is movably inserted at the lower end of the third connecting rod, two ends of the sixth shaft pin are fixedly connected to the opposite side walls of the brake support, a first torsion spring is fixedly sleeved on the sixth shaft pin, and the lower end of the first torsion spring is prepressed to abut against a preset clamping groove of a bottom plate of the brake support, the upper end of the first torsion spring is pre-pressed on a fifth shaft pin, a seventh shaft pin is movably inserted on the lower side of the brake reed, two ends of the seventh shaft pin are movably erected in horizontal strip holes of opposite side walls of the brake bracket, the lower end of the brake reed is an arc brake piece and is arranged close to a front wheel, a front direction brake bolt seat is fixedly connected on the rear side of a front horizontal plate of the front T-shaped bottom plate, a front direction brake pin is movably inserted on the front direction brake bolt seat in a penetrating manner, a front reset spring is sleeved on the front direction brake pin positioned in the front direction brake bolt seat, two ends of the front reset spring are respectively pre-pressed and connected with the inner wall of the front direction brake bolt seat and the table wall of the front direction brake pin, and the outer end of the front direction brake pin is fixedly connected with a front direction brake pull wire joint through an eighth shaft pin, the front direction brake cable joint is provided with a front wheel direction brake cable interface, and the inner end of the front direction brake pin extending out of the front direction brake pin seat is in clamping fit with any one front positioning groove on the cylinder wall of the front bearing seat;

the roller control device comprises a pedal shell and a pedal shaft, the pedal shell is fixedly connected with the bottom of the chassis frame, the outer end of the pedal shaft is fixedly connected with a pedal, the pedal comprises a right pedal and a left pedal which are integrally formed, the front tractor can turn downwards to press the left pedal and the right pedal to enable the pedals to be in a horizontal state, the inner end of the pedal shaft extends into the front side wall of the pedal shell and is rotatably connected to the pedal shell, the inner end of the pedal shaft is fixedly connected with a driving wheel, driving teeth and recesses are arranged on the circumferential direction of the driving wheel, a positioning support is fixedly arranged on a bottom plate of the pedal shell on the right side of the driving wheel, a tenth shaft pin is fixedly connected between the front side wall of the pedal shell and the positioning support, a second torsion spring is fixedly sleeved on the tenth shaft pin, a positioning pressure rod is rotatably sleeved on the tenth shaft pin, and the positioning pressure rod can be rotated to be contacted and compressed with the middle part of the second torsion spring, an eleventh shaft pin is fixedly connected to the upper end of the positioning pressure lever, a first bearing is fixedly connected to the eleventh shaft pin, the surface of an outer ring of the first bearing can be in upward concave fit with the circumferential direction of the driving wheel, a driven shaft is further rotatably connected to the front side wall and the rear side wall of the pedal shell on the left side of the driving wheel, driven teeth meshed with the driving teeth are arranged on the circumferential direction of the driven shaft, a rear wheel crown switching swing arm and a front wheel brake swing arm are further fixedly sleeved on the driven shaft from front to back, the upper end of the rear wheel crown switching swing arm is rotatably connected with a rear wheel crown switching pull rod through a twelfth shaft pin, a rear wheel press line pin is fixed to the other end of the rear wheel crown switching pull rod, a rear wheel crown switching main pull line is connected to the rear wheel press line pin, and the other end of the rear wheel crown switching main pull line is connected to a rear wheel direction brake pull line interface, the upper end of the front wheel brake swing arm is rotationally connected with a front wheel brake pull rod through a thirteenth shaft pin, the other end of the front wheel brake pull rod is fixedly provided with a front wheel brake pressing line pin, the front wheel brake pressing line pin is connected with a front wheel brake main pull line, the other end of the front wheel brake main stay wire is connected on a front wheel brake stay wire interface, one side of the driven shaft close to the rear side wall of the pedal shell is fixedly sleeved with a cam, a U-shaped bracket is fixedly connected on the bottom plate of the pedal shell, the U-shaped bracket is rotatably connected with a front wheel direction braking swing arm through a fourteenth shaft pin, the middle part of the front wheel direction braking swing arm is fixedly connected with a bearing shaft pin, a second bearing is fixedly sleeved on the bearing shaft pin, the outer ring surface of the second bearing can be contacted with a cam on a driven shaft, the upper end of the front wheel direction braking swing arm is fixedly provided with a front wheel direction braking line pressing pin, the front wheel direction braking line pressing pin is connected with a front wheel direction braking main pull line, and the other end of the front wheel direction braking main pull line is connected on a front wheel direction braking line pressing interface;

the bottom of the chassis frame is fixedly connected with a front wheel braking line concentration box, a front wheel direction braking line concentration box and a rear wheel fixed line conversion line concentration box, the front wheel braking general stay wire is connected with the input end of the front wheel braking line concentration box, two output ends of the front wheel braking line concentration box are connected with the braking line interfaces of the two front wheel wheels through the front wheel braking line, the front wheel direction braking general stay wire is connected with the input end of the front wheel direction braking line concentration box, the two output ends of the front wheel direction braking concentrator are connected with two front wheel direction braking stay wire interfaces through front wheel direction braking stay wires, the rear wheel fixed universal conversion general stay wire is connected with the input end of the rear wheel fixed universal conversion concentrator, and the two output ends of the rear wheel fixed universal conversion concentrator are connected with two rear wheel direction braking stay wire interfaces through the rear wheel fixed universal conversion stay wire.

2. The mobile cargo platform according to claim 1, wherein the front and rear shock absorbing mechanisms have the same structure, the front shock absorbing mechanism includes a shock absorbing bracket disposed at the rear of the front lever bracket and fixedly connected to the front side bracket, a spring seat is fixedly mounted inside the shock absorbing bracket, a spring end cover is movably fastened to the top end of the spring seat, a spring rod is fixedly inserted on the surface of the spring end cover through a bolt, the lower end of the spring rod movably penetrates through the spring seat and extends out of the bottom of the shock absorbing bracket, a shock absorbing spring is movably sleeved on the spring rod inside the spring seat, the lower end of the spring rod extending out of the bottom of the shock absorbing bracket is fixedly connected to the surface of a sleeve, a fixing bolt is fixedly sleeved inside the sleeve, and two ends of the fixing bolt are fixedly inserted on the front lever brackets on two sides of the front wheel.

3. A mobile cargo platform according to claim 2, wherein two chambers are provided in the spring retainer, and a spring tension rod is provided in each chamber.

4. The mobile cargo platform of claim 1, wherein the lower end of the rack is provided with a recessed ring, the open connecting block comprises a connecting plate and connecting side plates integrally formed on opposite sides of the connecting plate, the connecting plate is provided with a notch, and the connecting plate is rotatably clamped on the recessed ring through the notch.

5. The mobile cargo platform of claim 1, wherein the brake spring is made of 65Mn material.

6. The mobile cargo platform of claim 1, wherein the front and rear horizontal plates have connecting top plates bolted to their surfaces, the connecting top plates having front and rear side surfaces fixedly attached to the bottom of the chassis frame.

7. The mobile cargo platform of claim 1, wherein a front connecting plate perpendicular to the front side wall is fixedly connected to the front side wall of the pedal housing, a front mounting hole is formed in the front connecting plate, an auxiliary supporting plate parallel to the front side wall and suitable for the pedal shaft to pass through is fixedly connected to one side of the front connecting plate away from the front side wall, a rear connecting plate perpendicular to the rear side wall is fixedly connected to the rear side wall of the pedal housing, and a rear mounting hole is formed in the rear connecting plate.

8. The mobile cargo platform of claim 1, wherein a rear wheel constant total cable guide tube adapted for a rear wheel constant total cable to pass through is disposed on a left side wall of the pedal housing, and a front wheel brake cable guide tube adapted for a front wheel brake total cable to pass through and a front wheel direction brake cable guide tube adapted for a front wheel brake total cable to pass through are disposed on a right side wall of the pedal housing.

9. The mobile cargo platform of claim 8, wherein a rear wheel immobilizer swing arm stop and a front wheel brake swing arm stop are fixed to the bottom plate of the deck housing, the center of the front wheel brake cable guide tube and the axial center height of the driven shaft are equal, the front wheel brake swing arm stop is at a height such that the front wheel brake swing arm brakes the front wheel, the center of the fourth pivot pin is lower than the axial center height of the driven shaft, the center of the rear wheel immobilizer cable guide tube and the axial center height of the driven shaft are equal, the rear wheel immobilizer swing arm stop is at a height such that the rear wheel immobilizer swing arm loosens the rear wheel, and the center of the third pivot pin is lower than the axial center height of the driven shaft.