CN110578463B - Foldable engineering machinery crawling ladder - Google Patents
Foldable engineering machinery crawling ladder Download PDFInfo
- Publication number
- CN110578463B CN110578463B CN201910933893.8A CN201910933893A CN110578463B CN 110578463 B CN110578463 B CN 110578463B CN 201910933893 A CN201910933893 A CN 201910933893A CN 110578463 B CN110578463 B CN 110578463B
- Authority
- CN
- China
- Prior art keywords
- pedal
- vertical plate
- fixed
- hinged
- sucker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000009193 crawling Effects 0.000 title abstract description 5
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 241000282326 Felis catus Species 0.000 claims abstract description 7
- 125000006850 spacer group Chemical group 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 15
- 230000009467 reduction Effects 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 abstract description 3
- 230000009194 climbing Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C5/00—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles
- E06C5/02—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C5/00—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles
- E06C5/32—Accessories, e.g. brakes on ladders
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/08—Special construction of longitudinal members, or rungs or other treads
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
Abstract
The invention discloses a foldable engineering machinery crawling ladder, and belongs to the technical field of engineering machinery. The fixed plate is fixedly provided with a pair of inner vertical plates which are respectively arranged at two sides of the pedal II and the pedal I, and the inner edges of the pedal II and the pedal I are hinged on the inner vertical plates; the outer edges of the pedal II and the pedal I are hinged with an outer vertical plate; the upper end of the inner vertical plate extends out of the pedal II, and a chute is formed in the upper end of the inner vertical plate; a pull rod is hinged to the side edge of the pedal II, and the upper end of the pull rod is slidably arranged in the chute; a linear driver is hinged between the upper end of the inner vertical plate and the outer vertical plate; one side of the outer vertical plate is fixed with an armrest and a sucker male head, and a sucker female head is fixed on the engineering machinery. According to the invention, the folding, flattening and retention of the cat ladder are realized through the two parallelogram mechanisms, the crank sliding block mechanism and the sucker mechanism, the structure is stable and reliable, the working condition adaptability is greatly improved, and the trafficability of the whole machine is improved; non-relevant personnel can not climb after folding, and unnecessary safety accidents are avoided.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a foldable engineering machinery crawling ladder.
Background
The engineering machinery ladder is used as a passage for workers to enter and exit the cab, the effect is very important, and most of the existing engineering machinery ladder is directly welded on the left vertical plate and the right vertical plate through pedals, and the engineering machinery ladder is fixedly connected with the frame. Although this structure can realize the basic climbing function, the following defects still exist:
1. the design and the assembly are complex, the replacement is inconvenient, once the integral ladder is corroded or the ladder is deformed due to the damage of heavy objects, the integral ladder can be replaced only by cutting and reselding, and the operation is time-consuming and labor-consuming;
2. the width of the pedal is very small, the gravity center is easy to be unstable in the climbing or staying process of workers, and the pedal stretches out, so that the pedal is easy to scratch during vehicle maintenance, and the safety is not high;
3. the whole width of the vehicle body is enlarged, the ladder stand is arranged outside the vehicle frame, and the width of the pedal can be enlarged, so that the vehicle body is not easy to smoothly pass through a narrower road surface.
4. Because the ground position of cat ladder bottom is not high, non-professional very easily climbs, very easily causes the emergence of incident.
Disclosure of Invention
In order to solve the technical problems, the invention provides the foldable engineering machinery ladder, which improves the folding, flattening and retention performances of the ladder and improves the working condition adaptability through a handle sliding block mechanism, a parallelogram mechanism, a sucker mechanism and the like.
The invention is realized by the following technical scheme: the foldable engineering machinery crawling ladder comprises a pedal II, a pedal I and a fixed plate fixed on engineering machinery, wherein the pedal II is positioned above the pedal I, a pair of inner vertical plates which are respectively arranged on two sides of the pedal II and the pedal I are fixed on the fixed plate, and the inner edges of the pedal II and the pedal I are hinged on the inner vertical plates; the outer edges of the pedal II and the pedal I are hinged with outer vertical plates; the upper end of the inner vertical plate extends out of the pedal II, and a chute is formed in the upper end of the inner vertical plate; a pull rod is hinged to the side edge of the pedal II, and the upper end of the pull rod is slidably arranged in the chute; a linear driver is hinged between the upper end of the inner vertical plate and the outer vertical plate; one side of the outer vertical plate is fixed with an armrest and a sucker male head, and a sucker female head matched with the sucker male head is fixed on the engineering machinery.
It is further: a pedal III is arranged below the pedal I, a pair of inner rubber plates are hinged to the inner edge of the pedal III, and a pair of outer rubber plates are hinged to the outer edge of the pedal III; the upper end of the outer rubber plate and the lower end of the outer vertical plate are hinged to the outer edge of the pedal I together, and the upper end of the inner rubber plate and the lower end of the inner vertical plate are hinged to the inner edge of the pedal I together; the upper end of the inner rubber plate is also fixed on the inner vertical plate through bolts.
The left outer vertical plate is fixedly provided with a handrail mounting frame, and the handrail mounting frame is provided with a bending groove with an inward opening; the armrest and the sucker male head are fixed on the armrest mounting frame.
The female head of the sucker is made of metal material, a socket is formed in the female head of the sucker, a threaded through hole is formed in the bottom of the socket, and a bolt connected with engineering machinery is installed in the threaded through hole; a rubber layer is covered in the socket of the sucker female head; the sucker male head is made of metal, an insert block is arranged on the sucker male head, a threaded counter bore is formed in the end portion of the insert block, and a bolt connected with the handrail mounting frame is arranged in the threaded counter bore; the insert block of the sucker male head is provided with an exhaust hole.
The handrail mounting frame is fixedly provided with a fixed block, and the lower end of the linear driver on the left side of the pedal I is hinged to the fixed block; the lower end of the straight line driver on the right side of the pedal I is hinged to the hinged support; the hinge bracket is provided with a bending groove with an inward opening.
The linear driver comprises a sleeve and a hollow output shaft which is slidably arranged in the sleeve; the shaft center of the sleeve is rotatably provided with a screw rod, the inner end of the output shaft is fixedly provided with a nut, and the screw rod and the nut are connected in a matched manner; a base is fixed at the lower end of the sleeve, the lower end of the screw rod extends into the base, and a gear reduction mechanism connected with the lower end of the screw rod is arranged in the base; and a motor for driving the gear reduction mechanism is also fixed on the base.
Bolts I are respectively fixed on two sides of the inner edge of the pedal II, and the other ends of the bolts I are arranged on the inner vertical plate; a rubber spacer I is arranged between the pedal II and the inner vertical plate; bolts II are respectively fixed on two sides of the outer edge of the pedal II, and the other ends of the bolts II are arranged on the outer vertical plate; a rubber spacer II is arranged between the pedal II and the outer vertical plate; bolts III are respectively fixed on two sides of the inner edge of the pedal I, the other ends of the bolts III are simultaneously arranged on the inner vertical plate and the inner rubber plate, and the inner rubber plate is positioned on the outer side of the inner vertical plate; a rubber spacer III is arranged between the pedal I and the inner vertical plate; bolts IV are respectively fixed on two sides of the outer edge of the pedal I, the other ends of the bolts IV are simultaneously arranged on the outer vertical plate and the outer rubber plate, and the outer vertical plate is positioned on the outer side of the outer rubber plate; bolts V are respectively fixed on two sides of the inner edge of the pedal III, and the other ends of the bolts V are arranged on the inner rubber plate; a rubber spacer IV and a sleeve are arranged between the pedal III and the inner rubber plate; bolts VI are respectively fixed on two sides of the outer edge of the pedal III, and the other ends of the bolts VI are arranged on the outer rubber plate.
The lower end of the pull rod is hinged to the side edge of the pedal II through a pin shaft, and the upper end of the pull rod is slidably arranged in the chute through another pin shaft; under the action of the linear driver, when the pin shaft at the upper end slides to the lowest position of the chute in the expanding process of the ladder, the ladder is in a fully expanded state; in the folding process of the ladder, when the upper end pin shaft slides to the highest position of the sliding groove, the female head of the sucker and the male head of the sucker are completely sucked, and the ladder is in a folding state.
Compared with the prior art, the invention has the beneficial effects that:
1, folding, flattening and retention of the ladder stand are realized through two parallelogram mechanisms, a crank sliding block mechanism and a sucker mechanism, the structure is stable and reliable, and the working condition adaptability is greatly improved;
2, the upper layer is a pedal and a vertical plate, the lower layer is a hinged structure of the pedal and a rubber plate, the stability of the structure is ensured, the structure is flexible, the structure is simple, the disassembly is convenient, and when any part of the vertical plate, the rubber plate and the pedal breaks down and needs to be replaced, the replacement is convenient;
3, through the foldable design, the width of the pedal can be adaptively increased, the moving range of staff is greatly improved, and standing is more stable and safety is higher;
4, after the ladder stand is folded, the whole width of the vehicle body is greatly reduced, and when obstacles are encountered on two sides in the running process of the engineering machinery, the vehicle can smoothly pass through the ladder stand, and the trafficability of the whole machine is improved; the bottom is very near to ground when the cat ladder is expanded, is convenient for climb, but when its folding back footboard is vertical, the emergence of unnecessary incident is avoided to irrelevant personnel will not climb.
Drawings
FIG. 1 is a fully expanded three-dimensional schematic view of a ladder of the present invention;
FIG. 2 is a fully expanded left side view of the ladder of the invention;
FIG. 3 is a fully collapsed three-dimensional schematic of the ladder of the invention;
FIG. 4 is a partial schematic view of the fully folded and locked condition of the ladder of the present invention;
FIG. 5 is a schematic view of the ladder of the present invention in a fully collapsed condition at the profiled aperture;
FIG. 6 is a schematic view of the hinge of the pedal II according to the invention;
FIG. 7 is a schematic view of the hinge of the pedal I of the present invention;
FIG. 8 is a schematic view of the hinge of the pedal III according to the invention;
FIG. 9 is a schematic view of the lower hinge of the linear actuator of the present invention;
FIG. 10 is a schematic view of the linear actuator of the present invention in a retracted configuration;
fig. 11 is a schematic view of the linear actuator of the present invention when extended.
In the figure: 1. the pedal comprises a pedal I, 2, an outer rubber plate, 3, an outer vertical plate, 4, an armrest, 5, a pedal II, 6, a sucker nut, 7 pull rods, 8, an inner vertical plate, 9, a chute, 10, a walking board, 11, bolts I, 12, a pin shaft, 13, bolts II, 14, bolts, 15, bolts III, 16, an inner rubber plate, 17, bolts V, 18, bolts VI, 19, bolts IV, 20, a sucker nut, 21, a fixed plate, 22, rubber spacers I, 23, rubber spacers II, 24, rubber spacers III, 25, rubber spacers IV, 26 sleeves, 27, a linear driver, 27-1, a motor, 27-2, a gear reduction mechanism, 27-3, nuts, 27-4, a lead screw, 27-5, an output shaft, 28, a fixed block, 29, an armrest mounting frame, 30, a hinged support, 31 and a pedal III.
Detailed Description
The following is a specific embodiment of the present invention, which is further described with reference to the accompanying drawings.
With reference to fig. 1 and 2, the pedal comprises a pedal ii 5, a pedal i 1 and a pedal iii 31 which are oppositely arranged from top to bottom. The walking board 10 is fixedly connected with the frame of the engineering machinery through bolts, the fixing plate 21 is fixed on the engineering machinery, and the fixing plate 21 is positioned below the walking board 10. Two inner vertical plates 8 are respectively arranged on two sides of the pedal II 5, the pedal I1 and the pedal III 31, the inner vertical plates 8 are angle irons, and the upper ends of the inner vertical plates 8 extend out of the pedal II 5. The upper part and the middle part of the inner vertical plate 8 are respectively fixedly connected with the walking board 10 and the fixed plate 21 through bolts.
As further shown in connection with figures 6 to 8,
bolts I11 are respectively fixed on two sides of the inner edge of the pedal II 5, and the other ends of the bolts I11 are arranged on the inner vertical plate 8; a rubber spacer I22 is arranged between the pedal II 5 and the inner vertical plate 8; the two sides of the outer edge of the pedal II 5 are respectively provided with a bolt II 13, and the other end of the bolt II 13 is arranged on the outer vertical plate 3; a rubber spacer II 23 is arranged between the pedal II 5 and the outer vertical plate 3;
bolts III 15 are respectively fixed on two sides of the inner edge of the pedal I1, the other ends of the bolts III 15 are simultaneously arranged on the inner vertical plate 8 and the inner rubber plate 16, and the inner rubber plate 16 is positioned on the outer side of the inner vertical plate 8; the upper end of the inner rubber plate 16 is also fixed to the inner riser 8 by bolts 14. A rubber spacer III 24 is arranged between the pedal I1 and the inner vertical plate 8; bolts IV 19 are respectively fixed on two sides of the outer edge of the pedal I1, the other ends of the bolts IV 19 are simultaneously arranged on the outer vertical plate 3 and the outer rubber plate 2, and the outer vertical plate 3 is positioned on the outer side of the outer rubber plate 2;
bolts V17 are respectively fixed on two sides of the inner edge of the pedal III 31, and the other ends of the bolts V17 are arranged on the inner rubber plate 16; a rubber spacer IV 25 and a sleeve 26 are arranged between the pedal III 31 and the inner rubber plate 16; bolts VI 18 are respectively fixed on two sides of the outer edge of the pedal III 31, and the other ends of the bolts VI 18 are arranged on the outer rubber plate 2.
As shown in fig. 1 to 4, a portion of the upper end of the inner vertical plate 8 extending out of the pedal ii 5 is provided with a sliding groove 9, the lower end of the pull rod 7 is hinged to the side edge of the pedal ii 5 through a pin shaft 12, and the upper end of the rod 7 is slidably mounted in the sliding groove 9 through another pin shaft 12. A linear driver 27 is hinged between the upper end of the inner vertical plate 8 and the outer vertical plate 3;
under the action of the linear actuator 27: in the spreading process of the ladder, when the upper pin shaft 12 slides to the lowest position of the chute 9, the ladder is in a complete spreading state; in the folding process of the ladder, when the upper end pin shaft 12 slides to the highest position of the sliding groove 9, the sucker female head 6 and the sucker male head 20 are completely sucked, and the ladder is in a folding state.
As shown in the combined figure 5, the middle inner edge positions of the outer vertical plate 3 and the outer rubber plate 2 are respectively provided with a notch, and after the folding, the notches of the outer vertical plate 3 and the outer rubber plate 2 are buckled on the corresponding rubber spacer, so that the interference problem between the ladder and the rubber spacer in the folding process is solved.
The combination 9 shows that the outer vertical plate 3 on the left side is fixedly welded with a handrail mounting frame 29, and the handrail mounting frame 29 is provided with a bending groove with an inward opening; a fixed block 28 is fixed on the armrest mounting 29, and the lower end of the linear driver 27 on the left side is hinged on the fixed block 28. The lower end of the outer vertical plate 3 on the right side is fixed with a hinged bracket 30 opposite to the fixed block 28, and the hinged bracket 30 is provided with a bending groove with an inward opening; the lower end of the right linear actuator 27 is hinged to the hinge bracket 30.
Referring to fig. 6, the armrest 4 and the suction cup male head 20 are fixed on the armrest mounting frame 29, and the suction cup female head 6 is fixed on the engineering machine, and the suction cup female head 6 is relatively matched with the suction cup male head 20. The sucker female head 6 is made of metal material, a socket is formed in the sucker female head 6, a threaded through hole is formed in the bottom of the socket, and a bolt connected with engineering machinery is installed in the threaded through hole; the socket of the sucker female head 6 is covered with a rubber layer. The sucking disc male head 20 is made of metal, an insert block is arranged on the sucking disc male head 20, a threaded counter bore is formed in the end portion of the insert block, and a bolt connected with the handrail mounting frame 29 is installed in the threaded counter bore; the plug block of the sucker male head 20 is provided with an air vent, so that the sucker male head 20 and the sucker female head 6 are conveniently separated after the sucking operation.
As shown in fig. 10 and 11, the linear actuator 27:
the hollow output shaft 27-5 is slidably arranged in the sleeve, the screw rod 27-4 is rotatably arranged at the axis of the sleeve, the nut 27-3 is fixed at the inner end of the output shaft 27-5, and the screw rod 27-4 and the nut 27-3 are connected in a matched mode. A base is fixed at the lower end of the sleeve, the lower end of the screw rod 27-4 extends into the base, and a gear reduction mechanism 27-2 connected with the lower end of the screw rod 27-4 is arranged in the base; a motor 27-1 for driving the gear reduction mechanism 27-2 is also fixed to the base. The linear reciprocating motion of the output shaft 27-5 is completed by the positive and negative rotation of the motor 27-1, so that the ladder can be unfolded and folded. The two linear drivers 27 are symmetrically designed left and right, so that the stress balance in the unfolding and folding processes of the ladder can be ensured, and the remote control of the ladder can be realized by remotely controlling the linear drivers 27.
In the embodiment, in order to ensure that the pedal does not sink, one ends of a bolt I11 and a bolt III 15 are respectively and fixedly connected with the inner vertical plate 8 through threads, and one ends of a bolt II 13 and a bolt IV 19 are respectively and fixedly connected with the outer vertical plate 3 through threads; the left side of the differential bolt V17 is connected with the sleeve 26 through threads and clamps the inner rubber plate 16. Nuts are designed at the other ends of the bolts, and a certain gap is reserved between the end face of each nut and the inner side face of the pedal; the middle polished rod positions of the bolt I11, the bolt II 13, the bolt III 15 and the bolt V17 are respectively provided with a rubber spacer I22, a rubber spacer II 23, a rubber spacer III 24 and a rubber spacer IV 25, so that the pedals I1 and II 5 are positioned at the middle position of the ladder, and abnormal noise is not generated in the folding and unfolding processes of the ladder.
The cat ladder unfolding process comprises the following steps:
the driver sets a forward rotation signal to enable the motor 27-1 of the linear driver 27 to rotate forward, the output shaft 27-5 extends continuously, and when the pin shaft 12 at the upper end of the pull rod 7 slides to the lowest position of the chute 9, the ladder stand is in a fully unfolded state; the flange is designed on the inner sides of the pedal I1 and the pedal II 5, when the cat ladder is completely unfolded, the flange is attached to the fixing plate 21, and the cat ladder is kept in a flattened state together with a crank slider mechanism consisting of the connecting rod 7, the pedal II 5, the sliding chute 9 and the bolt I11.
And (3) a ladder stand folding process:
the driver sets a reversing signal to enable the motor 27-1 of the linear driver 27 to reverse, the output shaft 27-5 continuously contracts, and when the pin shaft 12 at the upper end of the pull rod 7 slides to the highest position of the sliding groove 9, the sucker female head 6 and the sucker male head 20 are completely sucked, and the ladder stand is in a folded state.
The outer rubber plate 2, the outer vertical plate 3, the inner vertical plate 8, the inner rubber plate 16, the pedal III, the pedal I1 and the pedal II 5 form a double-parallelogram mechanism, and the outer rubber plate 2 and the outer vertical plate 3 are always vertical no matter the ladder stand is in the unfolding process or the folding process.
The present invention has been described above by way of example, but the present invention is not limited to the above-described embodiments, and any modifications or variations based on the present invention fall within the scope of the present invention.
Claims (6)
1. The utility model provides a collapsible engineering machine tool cat ladder, includes footboard II (5), footboard I (1) to and fix fixed plate (21) on engineering machine tool, footboard II (5) are located footboard I (1) top, its characterized in that:
a pair of inner vertical plates (8) which are respectively arranged at two sides of the pedal II (5) and the pedal I (1) are fixed on the fixed plate (21), and the inner edges of the pedal II (5) and the pedal I (1) are hinged on the inner vertical plates (8); an outer vertical plate (3) is hinged to the outer sides of the pedal II (5) and the pedal I (1);
the upper end of the inner vertical plate (8) extends out of the pedal II (5), and a chute (9) is formed in the upper end of the inner vertical plate (8); a pull rod (7) is hinged to the side edge of the pedal II (5), and the upper end of the pull rod (7) is slidably arranged in the chute (9);
a linear driver (27) is hinged between the upper end of the inner vertical plate (8) and the outer vertical plate (3);
an armrest (4) and a sucker male head (20) are fixed on one side of the outer vertical plate (3), and a sucker female head (6) matched with the sucker male head (20) is fixed on the engineering machinery;
a pedal III (31) is arranged below the pedal I (1), a pair of inner rubber plates (16) are hinged to the inner edge of the pedal III (31), and a pair of outer rubber plates (2) are hinged to the outer edge of the pedal III (31); the upper end of the outer rubber plate (2) and the lower end of the outer vertical plate (3) are hinged to the outer edge of the pedal I (1), and the upper end of the inner rubber plate (16) and the lower end of the inner vertical plate (8) are hinged to the inner edge of the pedal I (1); the upper end of the inner rubber plate (16) is also fixed on the inner vertical plate (8) through a bolt (14);
bolts I (11) are respectively fixed on two sides of the inner edge of the pedal II (5), and the other ends of the bolts I (11) are arranged on the inner vertical plate (8); a rubber spacer I (22) is arranged between the pedal II (5) and the inner vertical plate (8); bolts II (13) are respectively fixed on two sides of the outer edge of the pedal II (5), and the other ends of the bolts II (13) are arranged on the outer vertical plate (3); a rubber spacer II (23) is arranged between the pedal II (5) and the outer vertical plate (3);
bolts III (15) are respectively fixed on two sides of the inner edge of the pedal I (1), the other ends of the bolts III (15) are simultaneously arranged on the inner vertical plate (8) and the inner rubber plate (16), and the inner rubber plate (16) is positioned on the outer side of the inner vertical plate (8); a rubber spacer III (24) is arranged between the pedal I (1) and the inner vertical plate (8); bolts IV (19) are respectively fixed on two sides of the outer edge of the pedal I (1), the other ends of the bolts IV (19) are simultaneously arranged on the outer vertical plate (3) and the outer rubber plate (2), and the outer vertical plate (3) is positioned on the outer side of the outer rubber plate (2);
bolts V (17) are respectively fixed on two sides of the inner edge of the pedal III (31), and the other ends of the bolts V (17) are arranged on the inner rubber plate (16); a rubber spacer IV (25) and a sleeve (26) are arranged between the pedal III (31) and the inner rubber plate (16); bolts VI (18) are respectively fixed on two sides of the outer edge of the pedal III (31), and the other ends of the bolts VI (18) are arranged on the outer rubber plate (2);
the middle inner edge positions of the outer vertical plate (3) and the outer rubber plate (2) are respectively provided with a notch, and after the outer vertical plate (3) and the outer rubber plate (2) are folded, the notches of the outer vertical plate (3) and the outer rubber plate (2) are buckled on the corresponding rubber spacer.
2. The collapsible working machine ladder of claim 1, wherein: the left outer vertical plate (3) is fixedly provided with a handrail mounting frame (29), and the handrail mounting frame (29) is provided with a bending groove with an inward opening; the armrest (4) and the sucker male head (20) are fixed on the armrest mounting frame (29).
3. The collapsible working machine ladder of claim 2, wherein: the sucker female head (6) is made of metal, a socket is formed in the sucker female head (6), a threaded through hole is formed in the bottom of the socket, and a bolt connected with engineering machinery is installed in the threaded through hole; a rubber layer is covered in the socket of the sucker female head (6);
the sucker male head (20) is made of metal, an insert block is arranged on the sucker male head (20), a threaded counter bore is formed in the end part of the insert block, and a bolt connected with the armrest mounting frame (29) is installed in the threaded counter bore; the insert block of the sucker male head (20) is provided with an exhaust hole.
4. The collapsible working machine ladder of claim 2, wherein: a fixed block (28) is fixed on the armrest mounting frame (29), and the lower end of the linear driver (27) on the left side of the pedal I (1) is hinged on the fixed block (28);
the lower end of the outer vertical plate (3) on the right side is fixedly provided with a hinged support (30) opposite to the fixed block (28), and the lower end of the linear driver (27) on the right side of the pedal I (1) is hinged on the hinged support (30); the hinge bracket (30) is provided with a bending groove with an inward opening.
5. The collapsible working machine ladder of claim 1, wherein: the linear drive (27) comprises a sleeve and a hollow output shaft (27-5) slidably mounted in the sleeve; the screw rod (27-4) is rotatably arranged at the axis of the sleeve, a nut (27-3) is fixed at the inner end of the output shaft (27-5), and the screw rod (27-4) and the nut (27-3) are connected in a matched mode; a base is fixed at the lower end of the sleeve, the lower end of the screw rod (27-4) stretches into the base, and a gear reduction mechanism (27-2) connected with the lower end of the screw rod (27-4) is arranged in the base; a motor (27-1) for driving the gear reduction mechanism (27-2) is also fixed on the base.
6. The collapsible working machine ladder of claim 1, wherein: the lower end of the pull rod (7) is hinged to the side edge of the pedal II (5) through a pin shaft (12), and the upper end of the pull rod (7) is slidably arranged in the chute (9) through another pin shaft (12); under the action of the linear driver (27), when the upper pin shaft (12) slides to the lowest position of the chute (9) in the expanding process of the ladder, the ladder is in a completely expanded state; in the folding process of the ladder, when the upper pin shaft (12) slides to the highest position of the sliding groove (9), the sucker female head (6) and the sucker male head (20) are completely sucked, and the ladder is in a folding state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910933893.8A CN110578463B (en) | 2019-09-29 | 2019-09-29 | Foldable engineering machinery crawling ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910933893.8A CN110578463B (en) | 2019-09-29 | 2019-09-29 | Foldable engineering machinery crawling ladder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110578463A CN110578463A (en) | 2019-12-17 |
| CN110578463B true CN110578463B (en) | 2024-01-23 |
Family
ID=68814191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910933893.8A Active CN110578463B (en) | 2019-09-29 | 2019-09-29 | Foldable engineering machinery crawling ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110578463B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382401B (en) * | 2022-01-17 | 2024-07-02 | 安徽舜禹水务股份有限公司 | Water supply security protection cat ladder device based on visual identification system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102488557A (en) * | 2011-11-25 | 2012-06-13 | 华东交通大学 | Device capable of realizing combinatorial motion output of 3PUU (three-prismatic-universal-universal) mechanism and 3UPU (three-universal-prismatic- universal) mechanism |
| CN202578483U (en) * | 2012-04-24 | 2012-12-05 | 中联重科股份有限公司 | Vertical ladder with safety protection cage |
| CN203402072U (en) * | 2013-08-15 | 2014-01-22 | 上海中联重科桩工机械有限公司 | Crawling ladder and crawler-type engineering machinery |
| CN206103155U (en) * | 2016-08-31 | 2017-04-19 | 奥龙汽车有限公司 | Collapsible cat ladder is used to fire engine |
| CN211008427U (en) * | 2019-09-29 | 2020-07-14 | 徐工集团工程机械股份有限公司科技分公司 | Collapsible engineering machine tool cat ladder |
-
2019
- 2019-09-29 CN CN201910933893.8A patent/CN110578463B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102488557A (en) * | 2011-11-25 | 2012-06-13 | 华东交通大学 | Device capable of realizing combinatorial motion output of 3PUU (three-prismatic-universal-universal) mechanism and 3UPU (three-universal-prismatic- universal) mechanism |
| CN202578483U (en) * | 2012-04-24 | 2012-12-05 | 中联重科股份有限公司 | Vertical ladder with safety protection cage |
| CN203402072U (en) * | 2013-08-15 | 2014-01-22 | 上海中联重科桩工机械有限公司 | Crawling ladder and crawler-type engineering machinery |
| CN206103155U (en) * | 2016-08-31 | 2017-04-19 | 奥龙汽车有限公司 | Collapsible cat ladder is used to fire engine |
| CN211008427U (en) * | 2019-09-29 | 2020-07-14 | 徐工集团工程机械股份有限公司科技分公司 | Collapsible engineering machine tool cat ladder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110578463A (en) | 2019-12-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6926305B2 (en) | Air, electric and hydraulic landing gear jack | |
| CN108975240B (en) | Movable lifting stair platform | |
| CN105667829A (en) | Assembly/maintenance plane dock for planes in same series | |
| CN110578463B (en) | Foldable engineering machinery crawling ladder | |
| CN107178312B (en) | Vehicle-mounted guardrail drilling machine capable of folding drilling frame | |
| CN211008427U (en) | Collapsible engineering machine tool cat ladder | |
| CN101780933B (en) | Lift truck available for field operation | |
| CN209780182U (en) | Walking type climbing operation device | |
| CN106080909A (en) | Stepping quick access device and use the Electric disability vehicle of described stepping quick access device | |
| CN115771872A (en) | Intelligent elevator for building engineering construction and use method thereof | |
| CN205737633U (en) | A kind of solar energy booster slide-type stairs-mover | |
| CN114916858A (en) | High altitude curtain glass cleaning device | |
| CN210912377U (en) | Hydraulic lifting parking mechanism | |
| CN114376449A (en) | Robot for cleaning stair steps and guardrails and cleaning method thereof | |
| CN110577168B (en) | Movable auto repair lift platform that can balance regulation | |
| CN112027957A (en) | Intelligent movable jack | |
| CN205854381U (en) | Stepping quick access device and use the Electric disability vehicle of described stepping quick access device | |
| CN219202515U (en) | Traffic signal lamp | |
| CN109611021A (en) | A kind of ladder walked | |
| CN216855251U (en) | Forge medicine machine opening device | |
| CN202391336U (en) | Folding self-locking hanging ladder | |
| CN212801350U (en) | Front end module mounting device of sweeper | |
| CN221442021U (en) | Be used for building engineering auxiliary device that brushes wall | |
| CN108385754A (en) | A kind of kerbstone laying groove cutting vehicle | |
| CN219314444U (en) | Vehicle-mounted lifting equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |