CN205772112U - Lorry weight unloading power assisting device - Google Patents

Abstract

The utility model discloses a kind of lorry weight unloading power assisting device, including: pair of guide rails one, it is oppositely arranged；Sister block one and sister block two, it is installed in the top of pair of guide rails one respectively；Gusset piece；Connecting plate, it is the most detachably connected with pair of guide rails one and gusset piece, and connecting plate is provided with the first boss；Big disk, is provided with the first groove, the second boss and the first through hole, and the first boss inserts in the first through hole；Brake disc, is provided with the second through hole and third through-hole, and the first boss inserts in the second through hole, and the second boss inserts in third through-hole, and brake disc is provided with a depressed part；Scroll spring, it is arranged in depressed part；Guide rail two, its two ends are inserted in pair of guide rails one respectively, and the two ends of guide rail one are respectively arranged with second groove；Two single-sheaved blocks one, it is separately positioned in two the second grooves；Unloading plate；First steel wire rope.This utility model is easy to carry, simple in construction, energy-conserving and environment-protective.

Description

Lorry weight unloading power assisting device

Technical field

This utility model relates to a kind of power assisting device.More specifically, this utility model relates to a kind of lorry weight unloading power-assisted Device.

Background technology

Since late 1970s, China Logistics equipment has had and has developed faster, and various logistics transportation number of devices are fast Speed increases, and technical performance modernizes increasingly, and Container Transport is developed rapidly.Along with computer networking technology is in logistics Application in activity, logistics equipment total number increases sharply.Logistic Industry in China develops quickly, by the pole of governments at all levels Big attention, under this background, the total number of logistics equipment increases sharply, as transporting equipment, storage facilities, dispensing set Standby, packaging facilities, handling and loading equipment (such as fork truck, crane etc.), logistics information equipment etc..And logistics equipment exists The links of logistics is obtained for certain application.Either in production, the storage of manufacturing enterprise, the transport of the process of circulation, Dispensing, the packaging processing of logistics center, handling and loading, logistics equipment is obtained for certain application.

Although the logistics equipment that the high speed development of logistics makes advanced person is applied, but China Logistics equipment on the whole Development can not meet the requirement of new century brand-new logistics task, and loglstics enterprise only payes attention to quality and the type selecting of single equipment, does not has Have how comprehensive consideration whole system reaches optimization.And most loglstics enterprise will price as candidate flow device Primary factor, and ignore the investigation to interior quality Yu safety index.Another reason be the management of logistics equipment not Having the content extensively being included in logistics management, logistics equipment utilization rate is the highest, and the idleness of equipment time is longer.

At present, market lacks not only reasonable price but also be easy to carry, and the unloading power assisting device that the scope of application is wider.And it is most Portable unloading power assisting device is not had, it has to select " rash-and-rough way of loading and unloading ", cause goods when number courier is due to delivery The most damaged, from lorry, downward unloading also needs to expend a large amount of muscle power.

Utility model content

The purpose of this utility model is to provide a kind of lorry weight unloading power assisting device, and it takies small volume, easy to carry, Simple in construction, it is easy to operation, and during work, rely on the gravitional force of weight self, it is not necessary to big power supply unit.

In order to realize according to these purposes of the present utility model and further advantage, it is provided that a kind of lorry weight unloading power-assisted dress Put, including:

Pair of guide rails one, it is oppositely arranged, and described guide rail one cross section everywhere is concave shape, described guide rail one and level The angle in direction is 70-80 °；

Sister block one, on the medial wall at its top being installed in a guide rail one；

Sister block two, on the medial wall at its top being installed in another guide rail one, and is oppositely arranged with described sister block one；

Gusset piece, it is made up of integrated three pieces of square plates, and one of square plate is horizontally disposed, and and goods The afterbody in car compartment is hinged, and other two pieces of square plates are parallel with described guide rail one, and pair of guide rails one inserts other two pieces of square plates Between, and detachably connected with other two pieces of square plates；

Connecting plate, it is relative with boxcar, described connecting plate and one piece of side in pair of guide rails one and other two pieces of square plates Shape plate is the most detachably connected, and described connecting plate is provided with tubular first boss；

Big disk, it is arranged between pair of guide rails one, and is cylindrical, along its circumferencial direction from limit on described big disk Edge is provided with the first groove inwardly, and a bottom surface of described big disk is provided with multiple second boss, in described big disk Portion is provided with tubular first through hole along its axis direction, and described first boss inserts in described first through hole, and Another bottom surface of described big disk fits with described connecting plate；

Brake disc, it is cylindrical, and the middle part of described brake disc is provided with one tubular second along its axis direction Through hole, described first boss inserts in described second through hole, described brake disc is provided with multiple and described second boss relative Third through-hole, described second boss inserts in described third through-hole, and the side of described brake disc fits with described big disk, The middle part of the opposite side of described brake disc is provided with a depressed part；

Scroll spring, it is arranged in described depressed part, and one end on its inside on described scroll spring is first convex with described The end of platform is detachably connected, described scroll spring is positioned at the edge of the one end outside it and described depressed part removably Connect；

Guide rail two, its two ends insert in pair of guide rails one respectively, and fit with the medial wall of pair of guide rails one, described guide rail The two ends of one are respectively arranged with second groove；

Two single-sheaved blocks one, it is separately positioned in two the second grooves, and fixing with described guide rail two is connected；

Unloading plate, it is horizontally disposed, and described unloading plate is detachably connected with described guide rail two；

First steel wire rope, its one end and the inwall surrounding described first groove on described big disk are fixing to be connected, the other end press with After the winding direction that described scroll spring is identical is repeatedly wound around in described first groove, walk around successively on described sister block two One pulley, it is positioned at the single-sheaved block one below sister block two, another pulley on described sister block two, described sister block one On a pulley and detachably connected with described gusset piece after being positioned at the single-sheaved block one below sister block one, described first steel The length of cord is set to: when described unloading plate is in extreme higher position, described first steel wire rope is in tight state.

Preferably, in described lorry weight unloading power assisting device, also include:

Single-sheaved block two, on the medial wall of its bottom being arranged on a guide rail one；

Belt, its one end is detachably connected with described gusset piece, and the other end is by the winding direction contrary with described scroll spring It is wrapped on the lateral wall of described brake disc；

Second steel wire rope, its one end is detachably connected with the other end of described belt, and the other end walks around described sister block successively Another pulley on one, along be parallel to the direction of described guide rail one through described guide rail two, walk around described single-sheaved block two after, Horizontally passing through another guide rail one, the other end of described second steel wire rope is provided with a limited block, described limited block position Outside in described guide rail one；

Pedal, its one end is provided with an opening, and the size of the opening on described pedal is more than or equal to the size of described limited block, One end of described pedal is arranged between described limited block and another guide rail one, the opening on described pedal and described limited block Stagger；

Wherein, the length of described second steel wire rope is set to: when stepping on described pedal, and described second steel wire rope is in tight State, when not stepping on described pedal, described second steel wire rope is in relaxed state.

Preferably, in described lorry weight unloading power assisting device, also include:

Catch, it is detachably connected with the opposite side of described brake disc, and described catch seals described depressed part.

Preferably, in described lorry weight unloading power assisting device, described guide rail one is 75 ° with the angle of horizontal direction.

Preferably, in described lorry weight unloading power assisting device, one end on its inside on described scroll spring and institute The concrete mode stating the end of the first boss detachably connected is: the end of described first boss is provided with an opening, described One end on its inside on scroll spring is inserted in the opening on described first boss；It is positioned at outside it on described scroll spring One end concrete mode detachably connected with the edge of described depressed part be: the edge of described depressed part is provided with one and opens Mouthful, described scroll spring is positioned in the opening at the edge that described depressed part is inserted in the one end outside it.

Preferably, in described lorry weight unloading power assisting device, also include:

Connecting rod, it is arranged horizontally between pair of guide rails one, the two ends of described connecting rod respectively with pair of guide rails one Bottom fixing connect.

This utility model at least includes following beneficial effect:

This utility model, by the combination of the multi-motion parts such as pulley assembly, guide rail, speed limit parts, simple in construction, uses Convenient.

This utility model is without by supply unit, making full use of the gravitional force of goods self, environmental protection.

This utility model can load and unload, and small volume, it is simple to carries, and the suitability is wider.

Part is embodied by further advantage of the present utility model, target and feature by description below, and part also will be by this Research and the practice of utility model and be understood by the person skilled in the art.

Accompanying drawing explanation

Fig. 1 is the structural representation of lorry weight described in the utility model unloading power assisting device；

Fig. 2 is the structural representation of guide rail one described in the utility model；

Fig. 3 is the structural representation of guide rail two described in the utility model；

Fig. 4 is the structural representation of gusset piece described in the utility model；

Fig. 5 is the structural representation of connecting plate described in the utility model；

Fig. 6 is the structural representation of big disk described in the utility model；

Fig. 7 is the structural representation of brake disc described in the utility model；

Fig. 8 is the structural representation of scroll spring described in the utility model；

Fig. 9 is the structural representation of unloading plate described in the utility model.

Detailed description of the invention

Below in conjunction with the accompanying drawings this utility model is described in further detail, to make those skilled in the art with reference to description literary composition Word can be implemented according to this.

It should be noted that in description of the present utility model, term " laterally ", " longitudinally ", " on ", D score, " front ", Orientation or the position of the instruction such as " afterwards ", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward " are closed System, for based on orientation shown in the drawings or position relationship, is for only for ease of description this utility model and simplification describes, be not Instruction or hint indication device or element must have specific orientation, with specific azimuth configuration and operation, therefore can not It is interpreted as restriction of the present utility model.

As shown in Figures 1 to 9, this utility model provides a kind of lorry weight unloading power assisting device, including:

Pair of guide rails 1, it is oppositely arranged, and described guide rail 1 cross section everywhere is concave shape, pair of guide rails The recess of 1 is relative, and described guide rail 1 is 70-80 ° with the angle of horizontal direction；Guide rail 1 and level side To at an angle, such boxcar, this device and ground form triangle, and triangular structure is stable so that unloading The situation making this device topple because goods is overweight is not had during goods, safer.

Sister block one, on the medial wall at its top being installed in a guide rail 1；

Sister block two, on the medial wall at its top being installed in another guide rail 1, and relative with described sister block one sets Put；

Gusset piece 110, it is made up of integrated three pieces of square plates, as shown in Figure 4, gusset piece 110 substantially in F shape, One of square plate is horizontally disposed, and hinged with the afterbody of boxcar, gets final product device in boxcar afterbody (example As, between afterbody in boxcar and horizontally disposed square plate, one hinge is set, gusset piece 110 can be around hinge Rotate, it is thus possible to make this device around hinge rotate, can take in when not in use in boxcar), other two pieces of square plates with Described guide rail 1 is parallel, and pair of guide rails 1 is inserted between other two pieces of square plates, and can with other two pieces of square plates Releasably connect；Gusset piece 110 is arranged on the top of guide rail 1, connects pair of guide rails 1, by pair of guide rails one 100 are fixed, and strengthen the bulk strength of this device.It is connected it addition, it establishes with lorry for this device.

Connecting plate 120, it is relative with boxcar, and i.e. it is near the side of boxcar, described connecting plate 120 and a pair One piece of square plate (i.e. near the square plate of side, boxcar) in guide rail 1 and other two pieces of square plates is the most detachable Ground connects, and described connecting plate 120 is provided with tubular first boss 121；As it is shown in figure 5, connecting plate 120 has There are three angles, are connected with pair of guide rails 1 and gusset piece 110 respectively, it is possible to take other enforcement pattern, connecting plate 120 The overall construction intensity of energy reinforced frame, the first boss 121 is the jackshaft of big disk 130 and brake disc 140.The opposing party Face accounts for from the aesthetic property of this device, adds upper junction plate 120 and makes the entirety of this device get up from the appearance more to coordinate.

Big disk 130, it is arranged between pair of guide rails 1, and is cylindrical, along it on described big disk 130 Circumferencial direction is provided with the first groove 131 inwardly from edge, and a bottom surface of described big disk 130 is provided with multiple second Boss 132, the middle part of described big disk 130 is provided with tubular first through hole 133, institute along its axis direction State the first boss 121 to insert in described first through hole 133, and another bottom surface of described big disk 130 and described connecting plate 120 fit；

Brake disc 140, it is cylindrical, and the middle part of described brake disc 140 is provided with a cylinder along its axis direction Second through hole 141 of shape, described first boss 121 inserts in described second through hole 141, and the i.e. first boss 121 is worn successively Cross the first through hole 133 and the second through hole 141, using as big disk 130 and the jackshaft of brake disc 140, described brake disc Being provided with the third through-hole 142 that multiple and described second boss 132 is relative on 140, described second boss 132 inserts described In third through-hole 142, by the second boss 132 and third through-hole 142, big disk 130 and brake disc 140 are connected, Both are made to rotate coaxially around the first boss 121 together, and readily accessible, the side of described brake disc 140 and described great circle Dish 130 fits, and the middle part of the opposite side of described brake disc 140 is provided with a depressed part 143；

Scroll spring 150, it is arranged in described depressed part 143, one end on its inside on described scroll spring 150 151 (they are positioned at the middle part of scroll spring 150, for the top of scroll spring 150) and the end of described first boss 121 Detachably connected, described scroll spring 150 is positioned at one end 152 (for the end of scroll spring 150) outside it with The edge of described depressed part is detachably connected；

Guide rail 2 170, its two ends insert in pair of guide rails 1 respectively, and are affixed with the medial wall of pair of guide rails 1 Closing, the two ends of described guide rail 1 are respectively arranged with second groove 171；

Two single-sheaved blocks one, it is separately positioned in two the second grooves 171, and fixing with described guide rail 2 170 is connected；

Unloading plate 160, it is horizontally disposed, so can guarantee that goods is not toppled over, and described unloading plate 160 is led with described Rail 2 170 is detachably connected；So guide rail 2 170 along pair of guide rails 1 move up and down time, can drive unloading plate 160 move up and down.

First steel wire rope, its one end is fixing with the inwall surrounding described first groove 131 on described big disk 130 to be connected, i.e. One end of first steel wire rope is fixed in the first groove 131, and the other end is by the winding direction identical with described scroll spring 150 After being repeatedly wound around in described first groove 131, walk around a pulley on described sister block two successively, be positioned at sister block two (it is with described for the single-sheaved block one of lower section, another pulley on described sister block two, a pulley on described sister block one Another pulley on sister block two is relative) and it is positioned at after the single-sheaved block one below sister block one (real with described gusset piece 110 Border is the bottom of the part on gusset piece 110 between two pieces of square plates being parallel to each other when using) detachably connected, The length of described first steel wire rope is set to: when described unloading plate 160 is in extreme higher position, described first steel wire rope is in Tight state.The most once loading goods on unloading plate 160, under the action of gravity of goods, the first steel wire rope can pull out the One groove 131.

In use, unloading plate 160 is in extreme higher position to this utility model, and goods is put to unloading plate 160 by courier, Unloading plate 160 drives the other end of the first steel wire rope downwards under gravity, and the first steel wire rope is drawn out, and pulls out process Middle drive big disk 130 rotates along the direction identical with the winding direction of scroll spring 150, now brake disc 140 and great circle Dish 130 rotates simultaneously, and scroll spring 150 is constantly compressed, and after unloading goods, scroll spring 150 resilience, drive is stopped Hull 140 rotates along the direction contrary with the winding direction of scroll spring 150, and now big disk 130 is same with brake disc 140 Time rotate, by the first wirerope-winding in the first groove 131, thus plate 160 of unloading rises, and the most constantly repeats.Institute In the lorry weight unloading power assisting device stated, also include:

Single-sheaved block 2 210, on the medial wall of its bottom being arranged on a guide rail 1；It is positioned at the lower section of sister block one.

Belt, its one end and described gusset piece 110 (are to be positioned at two pieces of sides being parallel to each other on gusset piece 110 time actually used The bottom of the part between shape plate) detachably connected, the other end is twined by the winding direction contrary with described scroll spring 150 It is wound on the lateral wall of described brake disc 140；Time actually used, belt is not wound around a circle on the lateral wall of brake disc 140, I.e. less than a circle, one end of belt is fixed with gusset piece 110, and the other end is downward along the tangential direction of brake disc 140 afterwards, After then passing around the lateral wall of brake disc 140, the one end with the second steel wire rope is connected, and one end of the second steel wire rope is with belt The other end along brake disc 140 tangential direction upwards, further around another pulley crossed on described sister block one.

Second steel wire rope 190, its one end is detachably connected with the other end of described belt, and the other end is walked around described double successively Another pulley on pulley one, along be parallel to the direction of described guide rail 1 through described guide rail 2 170, walk around described After single-sheaved block two, horizontally passing through another guide rail 1, it is spacing that the other end of described second steel wire rope is provided with one Block 191, described limited block is positioned at the outside of described guide rail 1；

Pedal 200, its one end is provided with an opening 201, and the size of the opening on described pedal is more than or equal to described spacing The size of block, during installation, makes limited block face toward the opening on pedal, one end of described pedal is arranged on described limited block and Between another guide rail 1, rotate pedal afterwards, make the opening on described pedal stagger with described limited block, such energy Make pedal be positioned between limited block and another guide rail 1, when needing to pull down, only need to rotate pedal so that it is on open Mouth, facing to limited block, i.e. can be taken off pedal；

Wherein, the length of described second steel wire rope is set to: when stepping on described pedal completely, and described second steel wire rope is in Tight state, when not stepping on described pedal, described second steel wire rope is in relaxed state.When pedal is stepped on completely, belt stretches tight The tightest, when not stepping on, belt slack, the degree that pedal is stepped on can be judged according to actual needs, make goods to decline, control again System is in certain speed.

When goods is heavier, unloading plate 160 decrease speed is too fast, in order to slow down goods decrease speed, only need to step on pedal, Pedal pulls out limited block, thus outwards pulls the other end of the second steel wire rope, makes the second steel wire rope be in tight state, Frictional force between belt and brake disc 140 is relatively big, can limit the rotation of brake disc 140, indirectly limits turning of big disk 130 Dynamic, what the first steel wire rope was pulled slows, thus the decrease speed of plate 160 of unloading is slack-off.When not stepping on pedal, the Two steel wire ropes are in relaxed state, and belt is less to the friction of brake disc 140, and brake disc 140 can normal rotation.

Time actually used, during as it is shown in figure 1, face this device, sister block one is installed in the top of the guide rail 1 in left side On the medial wall in portion, on the medial wall at the top that sister block two is installed in the guide rail 1 on right side, scroll spring 150 is along suitable Clockwise is wound around, and the first steel wire rope is wound around the most along clockwise direction in the first groove 131, walks around afterwards on sister block two A pulley, the single-sheaved block one on right side, another pulley on sister block two, a pulley on sister block one and left side Single-sheaved block one after, and on gusset piece 110, the bottom of part between two pieces of square plates being parallel to each other removably connects Connect.During unloading, when unloading plate 160 declines under the action of gravity of goods, the first steel wire rope drives big disk 130 along up time Pin direction rotates, and scroll spring 150 compresses, and when unloading plate 160 is unloaded, brake disc 140 is in the resilience of scroll spring 150 Rotate counterclockwise under effect, drive big disk 130 rotating in same direction simultaneously, the first steel wire rope is slowly taken in the first groove 131 In.Brake gear part, one end of belt is connected with gusset piece 110, and the other end is downward along the tangential direction of brake disc 140 Wrapped anti-clockwise is on the lateral wall of brake disc 140, and the one end with the second steel wire rope is connected afterwards, another of the second steel wire rope End walk around another pulley on sister block one, through guide rail 2 170, walk around single-sheaved block two after, horizontally pass through the right side The guide rail 1 of side, the other end at the second steel wire rope arranges a limited block, and when stepping on pedal, pedal pulls limited block, Making the second steel wire rope tighten, can slow down goods decrease speed.

In described lorry weight unloading power assisting device, also include:

Catch, it is detachably connected with the opposite side of described brake disc 140, and described catch seals described depressed part.Prevent Scroll spring 150 ejects.

In described lorry weight unloading power assisting device, described guide rail 1 is 75 ° with the angle of horizontal direction.Setting During meter, the angle to guide rail 1 with ground is measured, and angle is set to 75 °, can make guide rail 1 Length the shortest, topple when being unlikely to bear again weight.

In described lorry weight unloading power assisting device, one end on its inside on described scroll spring 150 and described first The concrete mode that the end of boss 121 is detachably connected is: the end of described first boss 121 is provided with an opening, institute State in the opening that one end on its inside on scroll spring 150 is inserted on described first boss 121；Described scroll spring The concrete mode being positioned at the one end outside it on 150 detachably connected with the edge of described depressed part is: described depressed part Edge is provided with an opening, and described scroll spring 150 is positioned at the opening that the edge of described depressed part is inserted in the one end outside it In.First boss 121 is fixed, and one end on its inside on scroll spring 150, will not be with when brake disc 140 rotates Rotation, during unloading goods, scroll spring 150 is positioned at the one end outside it can rotate with brake disc 140 and by scrollwork bullet Spring 150 compresses, during unloaded rising, and scroll spring 150 resilience, drive brake disc 140 to rotate.

In described lorry weight unloading power assisting device, also include:

Connecting rod 180, it is arranged horizontally between pair of guide rails 1, and the two ends of described connecting rod 180 are respectively Fix with the bottom of pair of guide rails 1 and be connected.The bottom of guide rail 1 is attached, improves the steady of whole device Qualitative.

Although embodiment of the present utility model is disclosed as above, but it is not restricted in description and embodiment listed Using, it can be applied to various applicable field of the present utility model completely, for those skilled in the art, and can It is easily achieved other amendment, therefore under the general concept limited without departing substantially from claim and equivalency range, this practicality Novel be not limited to specific details and shown here as with describe legend.

Claims (6)

1. a lorry weight unloading power assisting device, it is characterised in that including:

Pair of guide rails one, it is oppositely arranged, and described guide rail one cross section everywhere is concave shape, described guide rail one and level The angle in direction is 70-80 °；

Sister block one, on the medial wall at its top being installed in a guide rail one；

Sister block two, on the medial wall at its top being installed in another guide rail one, and is oppositely arranged with described sister block one；

Gusset piece, it is made up of integrated three pieces of square plates, and one of square plate is horizontally disposed, and and goods The afterbody in car compartment is hinged, and other two pieces of square plates are parallel with described guide rail one, and pair of guide rails one inserts other two pieces of square plates Between, and detachably connected with other two pieces of square plates；

Connecting plate, it is relative with boxcar, described connecting plate and one piece of side in pair of guide rails one and other two pieces of square plates Shape plate is the most detachably connected, and described connecting plate is provided with tubular first boss；

Big disk, it is arranged between pair of guide rails one, and is cylindrical, along its circumferencial direction from limit on described big disk Edge is provided with the first groove inwardly, and a bottom surface of described big disk is provided with multiple second boss, in described big disk Portion is provided with tubular first through hole along its axis direction, and described first boss inserts in described first through hole, and Another bottom surface of described big disk fits with described connecting plate；

Brake disc, it is cylindrical, and the middle part of described brake disc is provided with one tubular second along its axis direction Through hole, described first boss inserts in described second through hole, described brake disc is provided with multiple and described second boss relative Third through-hole, described second boss inserts in described third through-hole, and the side of described brake disc fits with described big disk, The middle part of the opposite side of described brake disc is provided with a depressed part；

Scroll spring, it is arranged in described depressed part, and one end on its inside on described scroll spring is first convex with described The end of platform is detachably connected, described scroll spring is positioned at the edge of the one end outside it and described depressed part removably Connect；

Guide rail two, its two ends insert in pair of guide rails one respectively, and fit with the medial wall of pair of guide rails one, described guide rail The two ends of one are respectively arranged with second groove；

Two single-sheaved blocks one, it is separately positioned in two the second grooves, and fixing with described guide rail two is connected；

Unloading plate, it is horizontally disposed, and described unloading plate is detachably connected with described guide rail two；

First steel wire rope, its one end and the inwall surrounding described first groove on described big disk are fixing to be connected, the other end press with After the winding direction that described scroll spring is identical is repeatedly wound around in described first groove, walk around successively on described sister block two One pulley, it is positioned at the single-sheaved block one below sister block two, another pulley on described sister block two, described sister block one On a pulley and detachably connected with described gusset piece after being positioned at the single-sheaved block one below sister block one, described first steel The length of cord is set to: when described unloading plate is in extreme higher position, described first steel wire rope is in tight state.

2. lorry weight unloading power assisting device as claimed in claim 1, it is characterised in that also include:

Single-sheaved block two, on the medial wall of its bottom being arranged on a guide rail one；

Belt, its one end is detachably connected with described gusset piece, and the other end is by the winding direction contrary with described scroll spring It is wrapped on the lateral wall of described brake disc；

Second steel wire rope, its one end is detachably connected with the other end of described belt, and the other end walks around described sister block successively Another pulley on one, along be parallel to the direction of described guide rail one through described guide rail two, walk around described single-sheaved block two after, Horizontally passing through another guide rail one, the other end of described second steel wire rope is provided with a limited block, described limited block position Outside in described guide rail one；

Pedal, its one end is provided with an opening, and the size of the opening on described pedal is more than or equal to the size of described limited block, One end of described pedal is arranged between described limited block and another guide rail one, the opening on described pedal and described limited block Stagger；

Wherein, the length of described second steel wire rope is set to: when stepping on described pedal, and described second steel wire rope is in tight State, when not stepping on described pedal, described second steel wire rope is in relaxed state.

3. lorry weight unloading power assisting device as claimed in claim 1, it is characterised in that also include:

Catch, it is detachably connected with the opposite side of described brake disc, and described catch seals described depressed part.

4. lorry weight unloading power assisting device as claimed in claim 1, it is characterised in that described guide rail one and level side To angle be 75 °.

5. lorry weight unloading power assisting device as claimed in claim 1, it is characterised in that be positioned on described scroll spring One end inside it concrete mode detachably connected with the end of described first boss is: the end of described first boss sets Being equipped with an opening, one end on its inside on described scroll spring is inserted in the opening on described first boss；Described scrollwork The concrete mode being positioned at the one end outside it on spring detachably connected with the edge of described depressed part is: described depressed part Edge is provided with an opening, described scroll spring is positioned in the opening at the edge that described depressed part is inserted in the one end outside it.

6. lorry weight unloading power assisting device as claimed in claim 1, it is characterised in that also include:

Connecting rod, it is arranged horizontally between pair of guide rails one, the two ends of described connecting rod respectively with pair of guide rails one Bottom fixing connect.