CN117262044A - Crawler-type flatbed capable of preventing transported materials from falling off and key structure thereof - Google Patents

Abstract

The invention discloses a crawler-type flat car capable of preventing transported materials from falling and a key structure thereof, and relates to the technical field of flat cars; the lifting adjusting structure is designed, so that the lifting function of the device can be realized, and the lifting adjusting structure is suitable for carrying and moving high-altitude materials; the anti-drop structure for the materials is designed, so that the effect of clamping and fixing the materials in the moving and transporting process is achieved, the phenomenon that the materials are not stable enough and easy to drop in the transporting process of the conventional flat car is avoided, the materials can be automatically loosened when the materials are required to be moved to a high place, and compared with the prior art, the anti-drop structure for the materials can automatically loosen when the materials are required to be transported to the high place without manual operation, and the materials can be automatically clamped and fixed when the materials are required to be transported; the design has supplementary stable structure, can further play the fastening effect to the material in the transportation, especially plays better fixed effect to special-shaped material, realizes carrying out harmless stability to the material.

Description

Crawler-type flatbed capable of preventing transported materials from falling off and key structure thereof

Technical Field

The invention discloses a crawler-type flat car capable of preventing transported materials from falling and a key structure thereof, and relates to the technical field of flat cars.

Background

Material handling refers to activities performed within the same field category that are aimed at changing the state and spatial location of the material, and improving material handling efficiency is critical to improving warehouse operating efficiency. In the handling of materials, it is often the case that materials are removed from one elevation, transported, and then transported to another elevation, for example, removed from a vehicle, transported to a warehouse, and then stacked on shelves. The unloading and stacking processes are often accomplished with forklifts, while the intermediate transportation processes are often accomplished with flatcars.

However, there are certain drawbacks to the way in which the various mechanical devices mate: the forklift is big to site area requirement in carrying goods, and under the operational environment that fork truck can't operate, simple flatbed needs the manpower to lift up article, and labor consumption is big, and more importantly, current flatbed can't fix the goods, and production safety is difficult to obtain the guarantee.

Aiming at the problems, the utility model patent of application number 202122981850.2 provides a solution scheme of remote control electric lifting flat car, and the goods can be lifted without lifting by people when the goods reach the position of a truck through the mutual matching of a fixed plate, a placing table, a connecting plate, a sliding groove, a sliding block, a moving block, a fixed shaft, an adjusting plate, a mounting block, a stabilizing block, a jacking block and a hydraulic cylinder, so that the working efficiency is greatly improved, the goods can be conveniently and rapidly pushed onto the truck through the mutual matching of a mounting plate, a supporting plate, a servo motor, a threaded rod, a threaded block, a pushing plate, a cylinder, a through groove, a sliding plate and a baffle, and the goods can be conveniently and rapidly pushed onto the truck, so that the practicability and the stability are greatly improved, and the production safety can be ensured.

However, this technique has a problem of difficulty in execution during actual operation: firstly, when materials are fixed, workers need to bind the materials or fix the materials by other manual modes, and when the materials are discharged, the binding loosening operation is needed, which all needs manual labor and time cost; secondly, because of the above-mentioned problems, the step of fixing the material is omitted for the personnel to get in touch with the mind easily, so that the material can shake and even fall easily due to jolt during transportation, and the production safety is difficult to be ensured.

Disclosure of Invention

Aiming at the problems, the invention designs the crawler-type flat car for preventing the transported materials from falling, and the crawler-type flat car is provided with the lifting adjusting structure, so that the lifting function of the device can be realized, and the crawler-type flat car is suitable for carrying and moving high-altitude materials; the anti-drop structure for the materials is designed, so that the effect of clamping and fixing the materials in the moving and transporting process is achieved, the phenomenon that the materials are not stable enough and easy to drop in the transporting process of the conventional flat car is avoided, the materials can be automatically loosened when the materials are required to be moved to a high place, and compared with the prior art, the anti-drop structure for the materials can automatically loosen when the materials are required to be transported to the high place without manual operation, and the materials can be automatically clamped and fixed when the materials are required to be transported; the design has supplementary stable structure, can further play the fastening effect to the material in the transportation, especially plays better fixed effect to special-shaped material, realizes carrying out harmless stability to the material.

The purpose of the invention is realized in the following way:

the crawler-type flat car for preventing the transported materials from falling comprises a crawler-type travelling mechanism, a lifting adjusting structure, a material placing platform, a linkage structure, a material falling preventing structure and an auxiliary stabilizing structure;

the lifting adjusting mechanism is fixedly arranged on the upper surface of the crawler-type travelling mechanism and used for adjusting the overall height, a material placing platform is fixedly arranged on the upper surface of the lifting adjusting mechanism, a linkage structure is arranged in the lifting adjusting mechanism, a material anti-falling structure used for preventing materials from falling is arranged on the material placing platform, and an auxiliary stabilizing structure used for further stabilizing the materials is arranged on the material anti-falling structure;

the crawler-type travelling mechanism comprises a fixed base, a rotating shaft, travelling wheels, a crawler, a connecting gear, a connecting chain, a driven gear, a driving servo motor and a driving gear;

the lifting adjusting structure comprises a fixed bottom plate, a lifting plate, a first movable sliding block, a driving cylinder, a second movable sliding block, a bracket A, a bracket B and a connecting block;

the linkage structure comprises a fixed cylinder A, a piston A, a connecting rod and a connecting pipe;

The material anti-dropping structure comprises a connecting slide block, a movable limiting clamping plate, a fixed cylinder B, a piston B, a connecting rod, a loop bar and a connecting spring,

the auxiliary stabilizing structure comprises an air bag, a fixed block, a fixed cylinder C, a connecting soft pipeline, a piston C, a sliding rod, a first fixed disc, a second fixed disc, a reset spring and a contact fixed block.

The crawler-type flat car capable of preventing the transported materials from falling comprises a fixed base, a rotating shaft, travelling wheels, tracks, connecting gears, connecting chains, driven gears, driving servo motors and driving gears, wherein an inner cavity is formed in the fixed base, the fixed base is rotatably connected with a plurality of rotating shafts, the travelling wheels are fixedly connected to two ends of the rotating shafts, and the tracks are arranged at the travelling wheels;

the arc wall department of a plurality of rotation axis is all fixedly connected with connecting gear, a plurality of connect through connecting chain between the gear, one of them arc wall department fixedly connected with driven gear of rotation axis, fixedly mounted has drive servo motor in unable adjustment base's the inner chamber, the terminal fixedly connected with driving gear of output shaft department of drive servo motor, intermeshing between driving gear and the driven gear.

The crawler-type flatbed capable of preventing the transported materials from falling comprises a fixed bottom plate, a lifting plate, a first movable sliding block, a driving cylinder, a second movable sliding block, a support A, a support B and a connecting block, wherein the fixed bottom plate is fixedly arranged on the upper surface of the fixed bottom plate, inner cavities are formed in two sides of the fixed bottom plate, the first movable sliding block is slidably connected in the inner cavities on two sides of the fixed bottom plate, one end of the driving cylinder is fixedly connected to the side wall of the first movable sliding block, the other end of the driving cylinder is fixedly connected with the side wall of the inner cavity of the fixed bottom plate, inner cavities are formed in two sides of the lifting plate, and the second movable sliding block is slidably connected in the inner cavities on two sides of the lifting plate;

the support A and the support B are arranged in a crossing manner, the support A and the support B are connected in a rotating manner, connecting blocks are connected at two ends of the support A and the support B in a rotating manner, two connecting blocks at the lower part are respectively fixedly connected with two first movable sliding blocks, two connecting blocks at the lower part are in sliding fit with a fixed bottom plate, two connecting blocks at the upper part are respectively fixedly connected with two second movable sliding blocks, and two connecting blocks at the upper part are in sliding fit with a lifting plate.

Foretell crawler-type flatbed that prevents transportation material and drop, linkage includes fixed barrel A, piston A, connecting rod and connecting pipe, linkage sets up in the inner chamber of lifter plate, fixed barrel A is fixed to be set up in the inner chamber of lifter plate, sliding connection has piston A in fixed barrel A's the inner chamber, piston A's one end fixedly connected with connecting rod's one end, the other end of connecting rod runs through fixed barrel A's inner chamber lateral wall and extends to outside the wall, fixedly connected between one end of connecting rod and the lateral wall of second removal slider, fixed barrel A's inner chamber one side department fixedly connected with connecting pipe.

The crawler-type flatbed capable of preventing the transported materials from falling comprises a connecting slide block, a movable limiting clamping plate, a fixed cylinder B, a piston B, a connecting rod, a loop bar and a connecting spring, wherein inner cavities are formed in two sides of the inside of the material placing platform, the connecting slide block is connected in the inner cavities of the material placing platform in a sliding manner, the movable limiting clamping plate is connected in two sides of the upper surface of the material placing platform in a sliding manner, and the connecting slide block is fixedly connected with the movable limiting clamping plate;

Fixed barrel B of fixedly connected with in the inner chamber of material place platform, sliding connection has piston B in the inner chamber of fixed barrel B, one side lateral wall department fixedly connected with connecting rod's one end, the other end of connecting rod runs through fixed barrel B's inner chamber lateral wall and extends to outside the wall, the loop bar has been cup jointed in the one end department slip of connecting rod, fixedly connected with coupling spring's one end between one end and the connecting slider of loop bar, coupling spring's the other end and the inner chamber wall fixed connection of loop bar, the one end of the one end fixedly connected with connecting tube of inner chamber one end department of fixed barrel B, fixedly connected with between the other end of connecting tube and the connecting pipe.

The auxiliary stabilizing structure comprises an air bag, a fixed block, a fixed cylinder C, a connecting soft pipeline, a piston C, a sliding rod, a first fixed disc, a second fixed disc, a reset spring and a contact fixed block, wherein the fixed block is fixedly arranged at the side edge position of a lifting plate, the fixed cylinder C is fixedly connected with the fixed block, the piston C is slidingly connected in an inner cavity of the fixed cylinder C, one end of the sliding rod is fixedly connected with the bottom surface of the piston C, the other end of the sliding rod penetrates through the bottom wall of the inner cavity of the fixed cylinder C and extends out of the wall, the bottom surface of the fixed cylinder C is fixedly connected with a first fixed disc, the bottom end of the sliding rod is fixedly connected with a second fixed disc, the upper surface of the second fixed disc is fixedly connected with one end of the reset spring, the other end of the reset spring is fixedly connected with the bottom surface of the first fixed disc, the contact fixed block is fixedly arranged at the side edge position of the fixed bottom plate, and the contact fixed block is positioned at the position right below the second fixed disc;

The gasbag is fixed to be set up in the lateral wall department of removing spacing splint, the inner chamber top department fixedly connected with of fixed barrel C connects the one end of soft pipeline, the other end of connecting the soft pipeline extends to in the inner chamber of gasbag and with fixed connection between the gasbag.

The utility model provides a prevent key structure of crawler-type flatbed that transportation material dropped, is linkage structure, including fixed barrel A, piston A, connecting rod and connecting pipe, linkage structure sets up in the inner chamber of lifter plate, fixed barrel A is fixed to be set up in the inner chamber of lifter plate, sliding connection has piston A in fixed barrel A's the inner chamber, piston A's one end fixedly connected with connecting rod's one end, the other end of connecting rod runs through fixed barrel A's inner chamber lateral wall and extends to outside the wall, fixedly connected between one end of connecting rod and the lateral wall of second removal slider, fixed barrel A's inner chamber one side department fixedly connected with connecting pipe.

The key structure of the crawler-type flatbed capable of preventing the transported materials from falling is a material anti-falling structure, and comprises a connecting slide block, a movable limiting clamping plate, a fixed cylinder B, a piston B, a connecting rod, a loop bar and a connecting spring, wherein inner cavities are formed in two sides of the inside of a material placing platform, the connecting slide block is connected in the inner cavities of the material placing platform in a sliding manner, the movable limiting clamping plate is connected in a sliding manner in two sides of the upper surface of the material placing platform, and the connecting slide block is fixedly connected with the movable limiting clamping plate;

Fixed barrel B of fixedly connected with in the inner chamber of material place platform, sliding connection has piston B in the inner chamber of fixed barrel B, one side lateral wall department fixedly connected with connecting rod's one end, the other end of connecting rod runs through fixed barrel B's inner chamber lateral wall and extends to outside the wall, the loop bar has been cup jointed in the one end department slip of connecting rod, fixedly connected with coupling spring's one end between one end and the connecting slider of loop bar, coupling spring's the other end and the inner chamber wall fixed connection of loop bar, the one end of the one end fixedly connected with connecting tube of inner chamber one end department of fixed barrel B, fixedly connected with between the other end of connecting tube and the connecting pipe.

The key structure of the crawler-type flatbed capable of preventing the transported materials from falling comprises an air bag, a fixed block, a fixed cylinder C, a connecting soft pipeline, a piston C, a sliding rod, a first fixed disc, a second fixed disc, a reset spring and a contact fixed block, wherein the fixed block is fixedly arranged at the side edge position of a lifting plate, the fixed cylinder C is fixedly connected with the fixed block, the piston C is slidingly connected in an inner cavity of the fixed cylinder C, one end of the sliding rod is fixedly connected with the bottom surface of the piston C, the other end of the sliding rod penetrates through the bottom wall of the inner cavity of the fixed cylinder C and extends out of the wall, the bottom surface of the fixed cylinder C is fixedly connected with a first fixed disc, the bottom end of the sliding rod is fixedly connected with a second fixed disc, the upper surface of the second fixed disc is fixedly connected with one end of the reset spring, the other end of the reset spring is fixedly connected with the bottom surface of the first fixed disc, the contact fixed block is fixedly arranged at the side edge position of the fixed bottom plate, and the contact fixed block is positioned at the position right below the second fixed disc;

The gasbag is fixed to be set up in the lateral wall department of removing spacing splint, the inner chamber top department fixedly connected with of fixed barrel C connects the one end of soft pipeline, the other end of connecting the soft pipeline extends to in the inner chamber of gasbag and with fixed connection between the gasbag.

The beneficial effects are that:

the lifting adjusting structure is designed, so that the lifting function of the device can be realized, and the lifting adjusting structure is suitable for carrying and moving high-altitude materials; the anti-drop structure for the materials is designed, so that the effect of clamping and fixing the materials in the moving and transporting process is achieved, the phenomenon that the materials are not stable enough and easy to drop in the transporting process of the conventional flat car is avoided, the materials can be automatically loosened when the materials are required to be moved to a high place, and compared with the prior art, the anti-drop structure for the materials can automatically loosen when the materials are required to be transported to the high place without manual operation, and the materials can be automatically clamped and fixed when the materials are required to be transported; the design has supplementary stable structure, can further play the fastening effect to the material in the transportation, especially plays better fixed effect to special-shaped material, realizes carrying out harmless stability to the material.

Drawings

FIG. 1 is a schematic perspective view of a crawler-type flatbed for preventing a transported material from falling;

FIG. 2 is a front view of the crawler-type flatbed of the present invention for preventing the transport material from falling;

FIG. 3 is a schematic perspective view of a crawler-type running mechanism;

FIG. 4 is a top view of the crawler travel mechanism;

FIG. 5 is an overall schematic of a lift adjustment structure;

FIG. 6 is a schematic cut-away view of a lift adjustment structure;

FIG. 7 is a schematic cross-sectional view of a linkage structure;

FIG. 8 is a schematic connection diagram of a material anti-drop structure;

FIG. 9 is a schematic sectional view of a material anti-drop structure;

FIG. 10 is a schematic cut-away view of an auxiliary stabilizing structure.

In the figure: 1. a crawler-type travelling mechanism; 2. a lifting adjusting structure; 3. a material placement platform; 4. a linkage structure; 5. a material anti-falling structure; 6. an auxiliary stabilizing structure; 7. a fixed base; 8. a rotation shaft; 9. a walking wheel; 10. a track; 11. a connecting gear; 12. a connecting chain; 13. a driven gear; 14. driving a servo motor; 15. a drive gear; 16. a fixed bottom plate; 17. a lifting plate; 18. a first movable slider; 19. a driving cylinder; 20. a second movable slider; 21. a bracket A; 22. a bracket B; 23. a connecting block; 24. fixing the cylinder A; 25. a piston A; 26. a connecting rod; 27. a connecting pipe; 28. the connecting slide block; 29. moving the limiting clamping plate; 30. a fixed cylinder B; 31. a piston B; 32. a connecting rod; 33. a loop bar; 34. a connecting spring; 35. a connecting pipe; 36. an air bag; 37. a fixed block; 38. fixing the cylinder C; 39. connecting a soft pipeline; 40. a piston C; 41. a slide bar; 42. a first fixed wafer; 43. a second fixed wafer; 44. a return spring; 45. and contacting the fixed block.

Detailed Description

The embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Detailed description of the preferred embodiments

The following is a specific embodiment of the crawler-type flatbed for preventing the transportation materials from falling.

The crawler-type flat car capable of preventing the transported materials from falling down in the specific embodiment comprises a crawler-type travelling mechanism 1, a lifting adjusting structure 2, a material placing platform 3, a linkage structure 4, a material falling-preventing structure 5 and an auxiliary stabilizing structure 6 as shown in fig. 1 and 2;

the utility model provides a crawler-type running gear 1's upper surface department fixed mounting is used for adjusting lifting regulation structure 2 of whole height, lifting regulation structure 2's upper surface department is fixed and is provided with material placement platform 3, lifting regulation structure 2's internally mounted is provided with linkage structure 4, material placement platform 3 department installs and is provided with the material anti-drop structure 5 that is used for preventing the material from dropping, material anti-drop structure 5 department is provided with the auxiliary stabilization structure 6 that is used for further stabilizing the material, this application has lifting regulation structure 2, can realize the lifting function of this device through lifting regulation structure 2, be fit for carrying the removal to the material of eminence, the convenience is carried the material of eminence and is received the transport for the staff is laborsaving more, and this application has material anti-drop structure 5 can be in the in-process of removing the transportation material and play the fixed effect of centre gripping, and then avoided the flatbed in the prior art material stability phenomenon of easily dropping down, and can loosen the material when needs to the eminence, the automatic centre gripping structure in the relative prior art, this application does not need manual operation, can realize automatic operation and can realize when the eminence automatic operation, can realize automatic operation, can carry the effect to the stability is good to the material is good, can be carried to the stability is improved, the stability is good to the material is carried to the stability, can be transported to the stability is better, can be transported to the stability is good to the material is transported to the stability, can be transported to the stability is improved, and is good to the stability is transported to the material is more is convenient.

As a further technical solution, as shown in fig. 3 and 4; the crawler-type travelling mechanism 1 comprises a fixed base 7, rotating shafts 8, travelling wheels 9, a crawler 10, a connecting gear 11, a connecting chain 12, a driven gear 13, a driving servo motor 14 and a driving gear 15, wherein an inner cavity is formed in the fixed base 7, a plurality of rotating shafts 8 are rotatably connected in the fixed base 7, the travelling wheels 9 are fixedly connected at two ends of the rotating shafts 8, and the crawler 10 is arranged at the travelling wheels 9;

the arc wall department of a plurality of rotation axis 8 equal fixedly connected with connecting gear 11, a plurality of connect through connecting chain 12 between the gear 11, one of them arc wall department fixedly connected with driven gear 13 of rotation axis 8, fixedly mounted has drive servo motor 14 in unable adjustment base 7's the inner chamber, the terminal fixedly connected with driving gear 15 of output shaft department of drive servo motor 14, intermeshing between driving gear 15 and the driven gear 13 can drive driving gear 15 through the work of drive servo motor 14 and rotate when needs remove this device, and then drive driven gear 13 through the rotation of driving gear 15 and rotate, and then drive rotation axis 8 and rotate, can drive connecting gear 11 through the rotation of rotation axis 8 and rotate, and then other connecting gear 11 of linkage carry out synchronous rotation, and then other rotation axes 8 carry out synchronous rotation, drive walking wheel 9 of this device both sides and carry out synchronous rotation, and then drive track 10 and remove, realize the removal function of this device, can play auxiliary power when transporting the material, relative ordinary hand cart, this application can be more laborsaving when transporting.

As a further technical solution, as shown in fig. 5 and 6; the lifting adjusting structure 2 comprises a fixed bottom plate 16, a lifting plate 17, a first moving slide block 18, a driving air cylinder 19, a second moving slide block 20, a support A21, a support B22 and a connecting block 23, wherein the fixed bottom plate 16 is fixedly arranged at the upper surface of the fixed base 7, inner cavities are formed in two side positions of the fixed bottom plate 16, the first moving slide block 18 is fixedly connected in the inner cavities of two sides of the fixed bottom plate 16, one end of the driving air cylinder 19 is fixedly connected to the side wall of the first moving slide block 18, the other end of the driving air cylinder 19 is fixedly connected with the side wall of the inner cavity of the fixed bottom plate 16, inner cavities are formed in two side positions of the lifting plate 17, and the second moving slide block 20 is fixedly connected in the inner cavities of two sides of the lifting plate 17. The first movable slide block 18 can be driven to move by the extension and retraction of the driving air cylinder 19;

the cross setting between support A21 and the support B22, rotate between support A21 and the support B22 and be connected, the both ends department of support A21 and support B22 all rotates and is connected with connecting block 23, two connecting blocks 23 of below respectively with two first removal slider 18 between fixed baseplate 16 fixed connection, sliding fit between two connecting blocks 23 of below and two second removal slider 20 respectively, sliding fit between two connecting blocks 23 of top and lifter plate 17, when the material that needs to the eminence carries, can drive first removal slider 18 to the inboard through the shrink of actuating cylinder 19 and remove, can drive support B22 and support A21 through the removal of first removal slider 18 and prop up lifter plate 17, and then make material placement platform 3 move to higher position department, the material handling of eminence to material placement platform 3 is convenient, after the transport, can drive two first removal slider 23 of driving cylinder 19 and lifter plate 17, can drive the support A to remove to the inboard through the shrink of driving cylinder 19, and then drive the carrier plate 21 and remove the location through the extension of driving cylinder 19, and then make the material handling platform carry out the slip-off to the slip-on-off, and then can drive the material handling platform through the carrier plate 1 to the high position, and then can carry out the material handling platform is convenient, the high-speed carrier is carried out, and the carrier is high and is convenient to carry the material handling platform is carried down.

As a specific technical scheme, as shown in fig. 7; the linkage structure 4 comprises a fixed cylinder A24, a piston A25, a connecting rod 26 and a connecting pipe 27, the linkage structure 4 is arranged in the inner cavity of the lifting plate 17, the fixed cylinder A24 is fixedly arranged in the inner cavity of the lifting plate 17, the piston A25 is connected in the inner cavity of the fixed cylinder A24 in a sliding manner, one end of the connecting rod 26 is fixedly connected with one end of the piston A25, the other end of the connecting rod 26 penetrates through the side wall of the inner cavity of the fixed cylinder A24 and extends out of the wall, one end of the connecting rod 26 is fixedly connected with the side wall of the second movable slide block 20, the connecting pipe 27 is fixedly connected with one side of the inner cavity of the fixed cylinder A24, when the first movable slide block 18 is driven to move by the expansion and contraction of the driving cylinder 19, the bracket A21 and the bracket B22 are driven to perform angular rotation, the second movable slide block 20 is driven to perform synchronous movement, and the connecting rod 26 can be pushed to move, and the piston A25 is driven to move through the movement of the connecting rod 26.

As a preferable technical solution, as shown in fig. 8 and 9; the material anti-falling structure 5 comprises a connecting slide block 28, a movable limiting clamping plate 29, a fixed cylinder B30, a piston B31, a connecting rod 32, a loop bar 33 and a connecting spring 34, wherein inner cavities are formed in two sides of the interior of the material placing platform 3, the connecting slide block 28 is connected in the inner cavities of the material placing platform 3 in a sliding manner, the movable limiting clamping plate 29 is connected to two sides of the upper surface of the material placing platform 3 in a sliding manner, the connecting slide block 28 and the movable limiting clamping plate 29 are fixedly connected, and the movable limiting clamping plate 29 can be driven to move through the movement of the connecting slide block 28;

The fixed cylinder B30 is fixedly connected in the inner cavity of the material placing platform 3, the piston B31 is fixedly connected in the inner cavity of the fixed cylinder B30 in a sliding manner, one end of the connecting rod 32 is fixedly connected at one side wall of the piston B31, the other end of the connecting rod 32 penetrates through the inner cavity side wall of the fixed cylinder B30 and extends out of the wall, the sleeve rod 33 is sleeved at one end of the connecting rod 32 in a sliding manner, one end of the sleeve rod 33 is fixedly connected with the connecting slide block 28, one end of the connecting spring 34 is fixedly connected at one end of the connecting rod 32, the other end of the connecting spring 34 is fixedly connected with the inner cavity wall of the sleeve rod 33, one end of the connecting pipeline 35 is fixedly connected at one end of the inner cavity of the fixed cylinder B30, the other end of the connecting pipeline 35 is fixedly connected with the connecting pipe 27, the lifting plate 17 can be driven to lift by the operation of the driving air cylinder 19, the lifting plate 17 synchronously drives the second moving slide block 20 to move inwards when lifting, the movement of the second moving slide block 20 drives the connecting rod 26 to move, the piston A25 is driven to move, the air in the inner cavity of the fixed cylinder A24 can be pushed into the inner cavity of the fixed cylinder B30 through the connecting pipe 27 and the connecting pipeline 35 by the movement of the piston A25, the piston B31 can be pushed to move outwards, the connecting rod 32 can be pushed to move, the sleeve rod 33 can be pushed to move, the connecting slide block 28 can be driven to move, the moving limiting clamp plate 29 can be driven to move to two sides of the material placing platform 3, the material to be carried can be conveniently placed on the upper surface of the material placing platform 3 by workers after the material placing is finished, the material needs to be transported, before being transported, the extension through the driving cylinder 19 drives the lifter plate 17 to reduce, and then drive the material and reduce, can drive the second and remove slider 20 and remove to the outside direction when reducing, and then drive piston A25 and remove to the outside direction, and then make the gas suction in the inner chamber of fixed barrel B30 retrieve in the inner chamber of fixed barrel A24, and then drive piston B31 and remove to the inside direction, and then drive connecting rod 32 and remove to the inside direction, and then can drive loop bar 33 and remove, and then drive connecting slider 28 and remove, drive and remove limiting clamp plate 29 and remove to the inside direction, play the fixed effect of centre gripping to the material of placing in material place platform 3 upper surface department, play the steady effect to the material, avoid dropping phenomenon because of jolting leads to in the transportation, and relative prior art, this application not only can fix the material, and can realize the automatic centre gripping of material is fixed and unclamp the effect when transporting the material, more convenient operation, do not need the extra operation of staff, be particularly suitable for the transport transportation work of eminence material.

As a further technical solution, as shown in fig. 10, the auxiliary stabilizing structure 6 includes an air bag 36, a fixed block 37, a fixed cylinder C38, a connecting soft pipe 39, a piston C40, a sliding rod 41, a first fixed disc 42, a second fixed disc 43, a return spring 44 and a contact fixed block 45, where the fixed block 37 is fixedly disposed at a side position of the lifting plate 17, the fixed cylinder C38 is fixedly connected to the fixed block 37, the piston C40 is slidingly connected to an inner cavity of the fixed cylinder C38, one end of the sliding rod 41 is fixedly connected to a bottom surface of the piston C40, the other end of the sliding rod 41 penetrates through a bottom wall of the inner cavity of the fixed cylinder C38 and extends to the outside of the wall, a first fixed disc 42 is fixedly connected to the bottom surface of the fixed cylinder C38, one end of the return spring 44 is fixedly connected to an upper surface of the second fixed disc 43, another end of the return spring 44 is fixedly connected to a bottom surface of the first fixed disc 42, and the contact fixed block 45 is fixedly disposed at a side position of the fixed disc 16 under the fixed disc 45;

The air bag 36 is fixedly arranged at the side wall of the movable limiting clamp plate 29, one end of a connecting soft pipeline 39 is fixedly connected at the top end of the inner cavity of the fixed cylinder C38, the other end of the connecting soft pipeline 39 extends into the inner cavity of the air bag 36 and is fixedly connected with the air bag 36, after the material is conveyed to the upper surface of the material placing platform 3, the material is driven to descend through the descending of the lifting plate 17, the movable limiting clamp plate 29 is enabled to automatically move to have the effect of clamping and fixing the material, when the lifting plate 17 moves downwards, the fixed block 37 is also enabled to be driven to move, the fixed block 37 is enabled to move, meanwhile, the fixed cylinder C38 is enabled to move, the fixed cylinder C38 is enabled to drive the sliding rod 41 and the second fixed disc 43 to move downwards, the second fixed disc 43 is enabled to be in contact with the contact fixed block 45, the contact fixed block 45 is enabled to push the sliding rod 41 along with the continuing downwards movement of the lifting plate 17, the sliding rod 41 pushes the piston C40 to move upwards in the inner cavity of the fixed cylinder C38, the air in the inner cavity of the fixed cylinder C38 is pushed into the inner cavity of the air bag 36 by the upward movement of the piston C40, the air bag 36 is expanded, the material can be further wrapped and clamped by the expansion of the air bag 36, the side wall of the special-shaped material can be fully attached to the clamping plate, a better clamping and fixing effect is achieved, the material is fixed by the expansion of the air bag 36, the lossless fixing effect can be achieved, damage to the material in the material clamping process is avoided, the stability in the material conveying process is further ensured, the dropping phenomenon of the material caused by jolt is avoided, after the material is conveyed to a destination, the material is lifted to a high position by the upward movement of the lifting plate 17, the fixed cylinder C38 is driven to move upwards at the same time, and because the elastic action of reset spring 44 can be continuous the fixed disk 43 of pushing down, and then drive slide bar 41 pushing down, and then can make piston C40 move downwards in the inner chamber of fixed barrel C38, through piston C40's downwardly moving, and then extract the gas in the gasbag 36 inner chamber for gasbag 36 shrink, and then can loosen the fixed material of centre gripping, make things convenient for the staff to lift the material that will loosen off, this application can loosen the material when lifting the material, is particularly suitable for the transport transportation movement work of eminence material.

Detailed description of the preferred embodiments

The following is a specific embodiment of the linkage structure of the crawler-type flat car for preventing the transported materials from falling.

The linkage structure of the crawler-type flatbed capable of preventing the transported materials from falling down in the concrete implementation manner comprises a fixed cylinder A24, a piston A25, a connecting rod 26 and a connecting pipe 27, wherein the linkage structure 4 is arranged in an inner cavity of a lifting plate 17, the fixed cylinder A24 is fixedly arranged in the inner cavity of the lifting plate 17, the piston A25 is slidingly connected in the inner cavity of the fixed cylinder A24, one end of the connecting rod 26 is fixedly connected with one end of the connecting rod A25, the other end of the connecting rod 26 penetrates through the side wall of the inner cavity of the fixed cylinder A24 and extends out of the wall, one end of the connecting rod 26 is fixedly connected with the side wall of a second movable slide 20, the connecting pipe 27 is fixedly connected with one side of the inner cavity of the fixed cylinder A24, when the first movable slide 18 is driven by extension of a driving cylinder 19, the bracket A21 and the bracket B22 are driven to perform angular rotation, the second movable slide 20 is driven to perform synchronous movement, the connecting rod 26 can be pushed to move by the movement of the second movable slide 20, and the piston A25 is driven to move by the movement of the connecting rod 26.

Detailed description of the preferred embodiments

The following is a specific embodiment of the material anti-falling structure of the crawler-type flat car for preventing the transported materials from falling.

The material anti-falling structure of the crawler-type flat car for preventing the transported materials from falling in the specific embodiment is shown in fig. 8 and 9; the movable limiting clamping plate comprises a connecting sliding block 28, a movable limiting clamping plate 29, a fixed cylinder B30, a piston B31, a connecting rod 32, a loop bar 33 and a connecting spring 34, wherein inner cavities are formed in two sides of the interior of the material placing platform 3, the connecting sliding block 28 is slidably connected in the inner cavity of the material placing platform 3, the movable limiting clamping plate 29 is slidably connected at two sides of the upper surface of the material placing platform 3, the connecting sliding block 28 and the movable limiting clamping plate 29 are fixedly connected, and the movable limiting clamping plate 29 can be driven to move through the movement of the connecting sliding block 28;

the fixed cylinder B30 is fixedly connected in the inner cavity of the material placing platform 3, the piston B31 is fixedly connected in the inner cavity of the fixed cylinder B30 in a sliding manner, one end of the connecting rod 32 is fixedly connected at one side wall of the piston B31, the other end of the connecting rod 32 penetrates through the inner cavity side wall of the fixed cylinder B30 and extends out of the wall, the sleeve rod 33 is sleeved at one end of the connecting rod 32 in a sliding manner, one end of the sleeve rod 33 is fixedly connected with the connecting slide block 28, one end of the connecting spring 34 is fixedly connected at one end of the connecting rod 32, the other end of the connecting spring 34 is fixedly connected with the inner cavity wall of the sleeve rod 33, one end of the connecting pipeline 35 is fixedly connected at one end of the inner cavity of the fixed cylinder B30, the other end of the connecting pipeline 35 is fixedly connected with the connecting pipe 27, the lifting plate 17 can be driven to lift by the operation of the driving air cylinder 19, the lifting plate 17 synchronously drives the second moving slide block 20 to move inwards when lifting, the movement of the second moving slide block 20 drives the connecting rod 26 to move, the piston A25 is driven to move, the air in the inner cavity of the fixed cylinder A24 can be pushed into the inner cavity of the fixed cylinder B30 through the connecting pipe 27 and the connecting pipeline 35 by the movement of the piston A25, the piston B31 can be pushed to move outwards, the connecting rod 32 can be pushed to move, the sleeve rod 33 can be pushed to move, the connecting slide block 28 can be driven to move, the moving limiting clamp plate 29 can be driven to move to two sides of the material placing platform 3, the material to be carried can be conveniently placed on the upper surface of the material placing platform 3 by workers after the material placing is finished, the material needs to be transported, before being transported, the extension through the driving cylinder 19 drives the lifter plate 17 to reduce, and then drive the material and reduce, can drive the second and remove slider 20 and remove to the outside direction when reducing, and then drive piston A25 and remove to the outside direction, and then make the gas suction in the inner chamber of fixed barrel B30 retrieve in the inner chamber of fixed barrel A24, and then drive piston B31 and remove to the inside direction, and then drive connecting rod 32 and remove to the inside direction, and then can drive loop bar 33 and remove, and then drive connecting slider 28 and remove, drive and remove limiting clamp plate 29 and remove to the inside direction, play the fixed effect of centre gripping to the material of placing in material place platform 3 upper surface department, play the steady effect to the material, avoid dropping phenomenon because of jolting leads to in the transportation, and relative prior art, this application not only can fix the material, and can realize the automatic centre gripping of material is fixed and unclamp the effect when transporting the material, more convenient operation, do not need the extra operation of staff, be particularly suitable for the transport transportation work of eminence material.

Detailed description of the preferred embodiments

The following is a specific embodiment of the auxiliary stabilizing structure of the crawler-type flat car for preventing the transported materials from falling.

The auxiliary stabilizing structure of the crawler-type flat car for preventing the transported materials from falling down in the specific embodiment comprises an air bag 36, a fixed block 37, a fixed cylinder C38, a connecting soft pipeline 39, a piston C40, a sliding rod 41, a first fixed disc 42, a second fixed disc 43, a reset spring 44 and a contact fixed block 45, wherein the fixed block 37 is fixedly arranged at the side position of a lifting plate 17, the fixed cylinder C38 is fixedly connected at the fixed block 37, the piston C40 is slidingly connected in an inner cavity of the fixed cylinder C38, one end of the sliding rod 41 is fixedly connected at the bottom surface of the piston C40, the other end of the sliding rod 41 penetrates through the bottom wall of the inner cavity of the fixed cylinder C38 and extends out of the wall, the bottom surface of the fixed cylinder C38 is fixedly connected with a first fixed disc 42, the bottom end of the sliding rod 41 is fixedly connected with a second fixed disc 43, the upper surface of the second fixed disc 43 is fixedly connected with one end of the reset spring 44, the other end of the reset spring 44 is fixedly connected with the bottom surface of the first fixed disc 42, one end of the contact fixed disc 45 is arranged at the side position of the second fixed disc 45, and the bottom surface of the second fixed disc 45 is positioned at the right side position of the fixed disc 45;

The air bag 36 is fixedly arranged at the side wall of the movable limiting clamp plate 29, one end of a connecting soft pipeline 39 is fixedly connected at the top end of the inner cavity of the fixed cylinder C38, the other end of the connecting soft pipeline 39 extends into the inner cavity of the air bag 36 and is fixedly connected with the air bag 36, after the material is conveyed to the upper surface of the material placing platform 3, the material is driven to descend through the descending of the lifting plate 17, the movable limiting clamp plate 29 is enabled to automatically move to have the effect of clamping and fixing the material, when the lifting plate 17 moves downwards, the fixed block 37 is also enabled to be driven to move, the fixed block 37 is enabled to move, meanwhile, the fixed cylinder C38 is enabled to move, the fixed cylinder C38 is enabled to drive the sliding rod 41 and the second fixed disc 43 to move downwards, the second fixed disc 43 is enabled to be in contact with the contact fixed block 45, the contact fixed block 45 is enabled to push the sliding rod 41 along with the continuing downwards movement of the lifting plate 17, the sliding rod 41 pushes the piston C40 to move upwards in the inner cavity of the fixed cylinder C38, the air in the inner cavity of the fixed cylinder C38 is pushed into the inner cavity of the air bag 36 by the upward movement of the piston C40, the air bag 36 is expanded, the material can be further wrapped and clamped by the expansion of the air bag 36, the side wall of the special-shaped material can be fully attached to the clamping plate, a better clamping and fixing effect is achieved, the material is fixed by the expansion of the air bag 36, the lossless fixing effect can be achieved, damage to the material in the material clamping process is avoided, the stability in the material conveying process is further ensured, the dropping phenomenon of the material caused by jolt is avoided, after the material is conveyed to a destination, the material is lifted to a high position by the upward movement of the lifting plate 17, the fixed cylinder C38 is driven to move upwards at the same time, and because the elastic action of reset spring 44 can be continuous the fixed disk 43 of pushing down, and then drive slide bar 41 pushing down, and then can make piston C40 move downwards in the inner chamber of fixed barrel C38, through piston C40's downwardly moving, and then extract the gas in the gasbag 36 inner chamber for gasbag 36 shrink, and then can loosen the fixed material of centre gripping, make things convenient for the staff to lift the material that will loosen off, this application can loosen the material when lifting the material, is particularly suitable for the transport transportation movement work of eminence material.

It should be noted that the above is only a specific embodiment of the present application, and is not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

It should be noted that, the technical features listed in the foregoing embodiments can be arranged and combined as long as they are not contradictory, and those skilled in the art can exhaust the results after each arrangement and combination according to the mathematical knowledge of the arrangement and combination learned by the senior citizen, and all the results after the arrangement and combination should be understood as being disclosed in the present application.

Claims (9)

1. Prevent crawler-type flatbed that transportation material dropped, its characterized in that: comprises a crawler-type travelling mechanism (1), a lifting adjusting structure (2), a material placing platform (3), a linkage structure (4), a material anti-falling structure (5) and an auxiliary stabilizing structure (6);

the lifting mechanism comprises a crawler-type travelling mechanism (1), wherein a lifting adjusting structure (2) for adjusting the overall height is fixedly arranged on the upper surface of the crawler-type travelling mechanism (1), a material placing platform (3) is fixedly arranged on the upper surface of the lifting adjusting structure (2), a linkage structure (4) is arranged in the lifting adjusting structure (2), a material anti-falling structure (5) for preventing materials from falling is arranged on the material placing platform (3), and an auxiliary stabilizing structure (6) for further stabilizing the materials is arranged on the material anti-falling structure (5);

The crawler-type travelling mechanism (1) comprises a fixed base (7), a rotating shaft (8), travelling wheels (9), a crawler belt (10), a connecting gear (11), a connecting chain (12), a driven gear (13), a driving servo motor (14) and a driving gear (15);

the lifting adjusting structure (2) comprises a fixed bottom plate (16), a lifting plate (17), a first moving slide block (18), a driving cylinder (19), a second moving slide block (20), a bracket A (21), a bracket B (22) and a connecting block (23);

the linkage structure (4) comprises a fixed cylinder body A (24), a piston A (25), a connecting rod (26) and a connecting pipe (27);

the material anti-drop structure (5) comprises a connecting sliding block (28), a movable limiting clamping plate (29), a fixed cylinder B (30), a piston B (31), a connecting rod (32), a loop bar (33) and a connecting spring (34),

the auxiliary stabilizing structure (6) comprises an air bag (36), a fixed block (37), a fixed cylinder C (38), a soft connecting pipeline (39), a piston C (40), a sliding rod (41), a first fixed disc (42), a second fixed disc (43), a reset spring (44) and a contact fixed block (45).

2. The crawler-type flatbed for preventing the dropping of transported materials according to claim 1, wherein: the crawler-type travelling mechanism (1) comprises a fixed base (7), a rotating shaft (8), travelling wheels (9), tracks (10), connecting gears (11), connecting chains (12), driven gears (13), driving servo motors (14) and driving gears (15), wherein an inner cavity is formed in the fixed base (7), a plurality of rotating shafts (8) are rotatably connected in the fixed base (7), travelling wheels (9) are fixedly connected at two ends of each rotating shaft (8), and the tracks (10) are arranged at the travelling wheels (9);

A plurality of arc wall department of rotation axis (8) is equal fixedly connected with connecting gear (11), a plurality of connect through connecting chain (12) between gear (11), one of them arc wall department fixedly connected with driven gear (13) of rotation axis (8), fixed mounting has drive servo motor (14) in the inner chamber of unable adjustment base (7), the terminal department fixedly connected with driving gear (15) of output shaft of drive servo motor (14), intermeshing between driving gear (15) and driven gear (13).

3. The crawler-type flatbed for preventing the dropping of transported materials according to claim 1, wherein: the lifting adjusting structure (2) comprises a fixed bottom plate (16), a lifting plate (17), a first movable sliding block (18), a driving air cylinder (19), a second movable sliding block (20), a support A (21), a support B (22) and a connecting block (23), wherein the fixed bottom plate (16) is fixedly arranged at the upper surface of the fixed base (7), inner cavities are formed in two side positions of the fixed bottom plate (16), the first movable sliding block (18) is fixedly connected in the inner cavities of two sides of the fixed bottom plate (16), one end of the driving air cylinder (19) is fixedly connected to the side wall of the first movable sliding block (18), the other end of the driving air cylinder (19) is fixedly connected with the side wall of the inner cavity of the fixed bottom plate (16), the inner cavities are formed in two side positions of the inside of the lifting plate (17), and the second movable sliding block (20) is fixedly connected in the inner cavities of two sides of the lifting plate (17).

The device is characterized in that the support A (21) and the support B (22) are arranged in a crossing manner, the support A (21) and the support B (22) are connected in a rotating manner, connecting blocks (23) are connected at two ends of the support A (21) and the support B (22) in a rotating manner, two connecting blocks (23) at the lower part are fixedly connected with two first movable sliding blocks (18) respectively, two connecting blocks (23) at the lower part are in sliding fit with a fixed bottom plate (16), two connecting blocks (23) at the upper part are fixedly connected with two second movable sliding blocks (20) respectively, and two connecting blocks (23) at the upper part are in sliding fit with a lifting plate (17).

4. The crawler-type flatbed for preventing the dropping of transported materials according to claim 1, wherein: the linkage structure (4) comprises a fixed cylinder A (24), a piston A (25), a connecting rod (26) and a connecting pipe (27), wherein the linkage structure (4) is arranged in an inner cavity of a lifting plate (17), the fixed cylinder A (24) is fixedly arranged in the inner cavity of the lifting plate (17), the piston A (25) is connected in a sliding manner in the inner cavity of the fixed cylinder A (24), one end of the connecting rod (26) is fixedly connected with one end of the piston A (25), the other end of the connecting rod (26) penetrates through the side wall of the inner cavity of the fixed cylinder A (24) and extends out of the wall, one end of the connecting rod (26) is fixedly connected with the side wall of a second movable sliding block (20), and the connecting pipe (27) is fixedly connected with one side of the inner cavity of the fixed cylinder A (24).

5. The crawler-type flatbed for preventing the dropping of transported materials according to claim 1, wherein: the material anti-drop structure (5) comprises a connecting sliding block (28), a movable limiting clamping plate (29), a fixed cylinder body B (30), a piston B (31), a connecting rod (32), a loop bar (33) and a connecting spring (34), wherein inner cavities are formed in two sides of the interior of the material placing platform (3), the connecting sliding block (28) is connected in the inner cavities of the material placing platform (3) in a sliding manner, the movable limiting clamping plate (29) is connected to two sides of the upper surface of the material placing platform (3) in a sliding manner, and the connecting sliding block (28) and the movable limiting clamping plate (29) are fixedly connected;

fixed barrel B (30) is fixedly connected with in the inner chamber of material place platform (3), sliding connection has piston B (31) in the inner chamber of fixed barrel B (30), one side lateral wall department fixedly connected with connecting rod (32) of piston B (31) one end, the other end of connecting rod (32) runs through the inner chamber lateral wall of fixed barrel B (30) and extends to outside the wall, loop bar (33) has been cup jointed in the one end department slip of connecting rod (32), fixed connection between one end and the connecting slider (28) of loop bar (33), the one end department fixedly connected with connecting spring (34) of one end department of connecting rod (32), the other end and the inner chamber wall fixed connection of loop bar (33) of connecting spring (34), the one end of inner chamber one end department fixedly connected with connecting tube (35) of fixed barrel B (30), fixed connection between the other end and connecting tube (27) of connecting tube (35).

6. The crawler-type flatbed for preventing the dropping of transported materials according to claim 1, wherein: the auxiliary stabilizing structure (6) comprises an air bag (36), a fixed block (37), a fixed cylinder C (38), a connecting soft pipe (39), a piston C (40), a sliding rod (41), a first fixed disc (42), a second fixed disc (43), a reset spring (44) and a contact fixed block (45), wherein the fixed block (37) is fixedly arranged at the side edge position of a lifting plate (17), the fixed block (37) is fixedly connected with the fixed cylinder C (38), a piston C (40) is slidingly connected in the inner cavity of the fixed cylinder C (38), one end of the sliding rod (41) is fixedly connected at the bottom surface of the piston C (40), the other end of the sliding rod (41) penetrates through the bottom wall of the inner cavity of the fixed cylinder C (38) and extends out of the wall, the bottom surface of the fixed cylinder C (38) is fixedly connected with the first fixed disc (42), the bottom end of the sliding rod (41) is fixedly connected with the second fixed disc (43), one end of the reset spring (44) is fixedly connected at the upper surface of the second fixed disc (43), one end of the reset spring (44) is fixedly connected with the bottom surface of the first fixed disc (45), the other end of the reset spring (43) is fixedly connected with the bottom surface of the bottom plate (16), the contact fixing block (45) is positioned at a position right below the second fixing wafer (43);

The air bag (36) is fixedly arranged at the side wall of the movable limiting clamp plate (29), one end of a soft connecting pipeline (39) is fixedly connected to the top end of the inner cavity of the fixed cylinder C (38), and the other end of the soft connecting pipeline (39) extends into the inner cavity of the air bag (36) and is fixedly connected with the air bag (36).

7. Prevent key structure of crawler-type flatbed that transportation material dropped, for linkage structure (4), its characterized in that: including fixed barrel A (24), piston A (25), connecting rod (26) and connecting pipe (27), linkage structure (4) set up in the inner chamber of lifter plate (17), fixed barrel A (24) is fixed to be set up in the inner chamber of lifter plate (17), sliding connection has piston A (25) in the inner chamber of fixed barrel A (24), the one end of one end department fixedly connected with connecting rod (26) of piston A (25), the other end of connecting rod (26) runs through the inner chamber lateral wall of fixed barrel A (24) and extends to outside the wall, fixed connection between the lateral wall of one end and second removal slider (20) of connecting rod (26), the one side department fixedly connected with connecting pipe (27) of inner chamber of fixed barrel A (24).

8. Prevent key structure of crawler-type flatbed that transportation material dropped, for material anti-drop structure (5), its characterized in that: the device comprises a connecting sliding block (28), a movable limiting clamping plate (29), a fixed cylinder B (30), a piston B (31), a connecting rod (32), a loop bar (33) and a connecting spring (34), wherein inner cavities are formed in two sides of the interior of a material placing platform (3), the connecting sliding block (28) is connected in the inner cavities of the material placing platform (3) in a sliding manner, the movable limiting clamping plate (29) is connected in two sides of the upper surface of the material placing platform (3) in a sliding manner, and the connecting sliding block (28) and the movable limiting clamping plate (29) are fixedly connected;

Fixed barrel B (30) is fixedly connected with in the inner chamber of material place platform (3), sliding connection has piston B (31) in the inner chamber of fixed barrel B (30), one side lateral wall department fixedly connected with connecting rod (32) of piston B (31) one end, the other end of connecting rod (32) runs through the inner chamber lateral wall of fixed barrel B (30) and extends to outside the wall, loop bar (33) has been cup jointed in the one end department slip of connecting rod (32), fixed connection between one end and the connecting slider (28) of loop bar (33), the one end department fixedly connected with connecting spring (34) of one end department of connecting rod (32), the other end and the inner chamber wall fixed connection of loop bar (33) of connecting spring (34), the one end of inner chamber one end department fixedly connected with connecting tube (35) of fixed barrel B (30), fixed connection between the other end and connecting tube (27) of connecting tube (35).

9. Prevent key structure of crawler-type flatbed that transportation material dropped, for supplementary stable structure (6), its characterized in that: the device comprises an air bag (36), a fixed block (37), a fixed cylinder C (38), a connecting soft pipeline (39), a piston C (40), a sliding rod (41), a first fixed disc (42), a second fixed disc (43), a return spring (44) and a contact fixed block (45), wherein the fixed block (37) is fixedly arranged at the side edge position of a lifting plate (17), the fixed cylinder C (38) is fixedly connected with the fixed block (37), the piston C (40) is slidingly connected in the inner cavity of the fixed cylinder C (38), one end of the sliding rod (41) is fixedly connected with the bottom surface of the piston C (40), the other end of the sliding rod (41) penetrates through the bottom wall of the inner cavity of the fixed cylinder C (38) and extends out of the wall, the first fixed disc (42) is fixedly connected with the bottom surface of the fixed cylinder C (38), one end of the return spring (44) is fixedly connected with the bottom end of the second fixed disc (43), the other end of the return spring (44) is fixedly connected with the bottom surface of the fixed disc (16) at the side edge position of the fixed block (45), the contact fixing block (45) is positioned at a position right below the second fixing wafer (43);

The air bag (36) is fixedly arranged at the side wall of the movable limiting clamp plate (29), one end of a soft connecting pipeline (39) is fixedly connected to the top end of the inner cavity of the fixed cylinder C (38), and the other end of the soft connecting pipeline (39) extends into the inner cavity of the air bag (36) and is fixedly connected with the air bag (36).