A self-unlocking anti-dropping mechanism

Abstract

The application discloses to the technical field of conveying carrying trolley, in particular to a self-unlocking anti-falling mechanism, which comprises a carrying track, a hanging component, a pressing component and a tail shovel, the lower end of the carrying track is sequentially provided with a first trolley and a second trolley, the two sides of the second trolley are respectively provided with a second trolley rear assembly and a trolley front assembly, the hanging component and the pressing component are arranged on one side of the trolley front assembly, timely limiting and anti-falling operation can be performed when the first trolley rear assembly is in contact with the inertia, and automatic unlocking is performed after the inertia and the reaction force end, the structure is simple, easy to disassemble and replace, the existing P / F line conveying system carrying trolley is less changed, has good interchangeability, and the phenomenon of "sliding trolley" and "blocking trolley" can be solved by replacing some parts of the carrying trolley according to the actual use of different production lines, the operation is simple, the use is labor-saving, and the labor cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of transport vehicle technology, specifically to a self-unlocking anti-detachment mechanism. Background Technology

[0002] In traditional P / F line conveyor systems, the carrier trolleys can be divided into three-cart groups, four-cart groups, etc., depending on the load capacity of the production line. These carrier trolleys generally consist of three parts: front, middle, and rear trolley assemblies. The specifications of the carrier trolleys used on each production line are the same, and the adjacent carrier trolleys are connected by the same sliding connection mechanism. In order to ensure the production efficiency and continuous operation stability of the P / F line conveyor system, each carrier trolley needs to be able to stack and release goods at the position equipped with a stopper. The connection between carrier trolleys is achieved by sliding the front trolley assembly of the next carrier trolley to the rear trolley assembly of the previous stopped carrier trolley. However, this connection method can block the next carrier trolley from moving forward, but it cannot prevent the next carrier trolley from sliding and connecting to the stopped carrier trolley and then reversing and disengaging.

[0003] When running smoothly at low speed on a horizontal production line, there is generally no noticeable "slippage" phenomenon where the next load-bearing trolley reverses and detaches from the previous stopped load-bearing trolley. However, in actual production, it is impossible to guarantee that the P / F production line will remain 100% level throughout its design, construction, and years of use. When the load-bearing trolley stops at a designated position on a high-speed P / F production line, or stops at curves, uphill, or downhill sections, the inertia of the load-bearing trolley and changes in the direction of gravity often cause the front trolley assembly of the next load-bearing trolley to slide. After the rear trolley assembly of the previous stopped carrier trolley reverses and detaches from the previous carrier trolley, a "carriage slippage" phenomenon occurs. Once a "carriage slippage" phenomenon occurs, the carrier trolleys that come later may only connect with the slipping rear carrier trolley and stop at any position on the P / F production line. In this way, after the stopper is withdrawn, only the carrier trolley that was blocked by the stopper will continue to move forward, while the other carrier trolleys remain stationary. Since the "carriage slippage" phenomenon is not dealt with in time, it will cause a "traffic jam" phenomenon, which will have a great impact on the production efficiency and stability of the P / F production line.

[0004] Currently, in order to solve the problems of "carriage slippage" and "traffic jams", relevant personnel are usually arranged on the P / F production line to manually push the carrying trolley forward or manually lift the lifting claw and connect it to the traction chain. However, this is only a temporary solution and not a fundamental solution. It not only affects the production efficiency of the production line, but also increases unnecessary labor costs. Summary of the Invention

[0005] The purpose of this invention is to provide a self-unlocking anti-detachment mechanism to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a self-unlocking anti-detachment mechanism, wherein the self-unlocking anti-detachment mechanism comprises:

[0007] The support rail has a first trolley and a second trolley arranged sequentially at its lower end. The second trolley has a rear assembly and a front assembly on its two sides respectively. The first trolley has a rear assembly on its side closer to the second trolley. The rear assembly, the rear assembly, and the front assembly all include a frame and rollers, and the rollers are slidably connected to the lower end of the support rail.

[0008] The frame of the front assembly of the trolley is arranged in an L-shape. The front assembly of the trolley has an installation cavity and a storage cavity on the horizontal side. The storage cavity is connected to the installation cavity.

[0009] The mounting assembly includes a limiting baffle and a ratchet, which are respectively rotatably disposed in the mounting cavity and the receiving cavity;

[0010] The pressing assembly is located on both sides of the frame of the front assembly of the trolley. The pressing assembly includes a lifting shaft and a guide pin, and a ratchet is sleeved on the lifting shaft.

[0011] A tail shovel is movably provided on one side of the rear assembly of the first trolley. The lower end of the tail shovel is connected to the upper end of the horizontal end of the frame of the front assembly of the trolley. An arc-shaped groove is provided on one side of the lower end of the tail shovel, and the arc-shaped groove is inserted and connected to one side of the ratchet.

[0012] Preferably, the lower ends of both the first trolley and the second trolley are equipped with load beams horizontally via lifting columns, and a cargo lifting device is vertically mounted at the center of the lower end of the load beam.

[0013] Preferably, a load beam pin is horizontally provided at the lower end of the mounting cavity, and a positioning pin is horizontally provided on the side of the mounting cavity near the load beam pin. The positioning pin is movably sleeved on one side of the lower end of the limiting baffle, and in its natural state, the limiting baffle is located on one side of the load beam pin and abuts against the load beam pin for limiting.

[0014] Preferably, a limiting rod is horizontally provided on the upper side of the mounting cavity near the positioning pin. When the front assembly of the trolley contacts the rear assembly of the first trolley, the tail shovel side abuts against the limiting baffle, and at this time, the limiting baffle side abuts against the limiting rod.

[0015] Preferably, the limiting baffle is provided with a hook arm and a limiting arm on both sides near the ratchet, and a number of ratchet teeth are symmetrically provided on the outer periphery of the ratchet. When the limiting baffle is in contact with the limiting rod, the hook arm on one side is hooked with the ratchet teeth on the ratchet side.

[0016] Preferably, the trolley front assembly frame is vertically and movably provided on both sides of the storage cavity near the storage cavity, and the trolley front assembly frame is vertically and movably provided on one side of the lifting groove. Guide grooves are vertically provided in both guide grooves. Guide pins are vertically inserted into both guide grooves. Two lifting grooves are provided on both sides of the lifting shaft and two guide pins are movably sleeved on them. Return springs are sleeved on the upper ends of the guide pins in the lifting grooves, and the lower ends of the return springs are in contact with the upper ends of the lifting shaft.

[0017] Preferably, a sliding groove is provided on one side of the rear assembly of the first trolley, and two keyways are symmetrically provided on both sides of the sliding groove. The tail shovel is vertically slidably inserted into the sliding groove on one side. The tail shovel is placed in the sliding groove and a slider is horizontally provided on the side near the keyway. The slider is slidably inserted into the keyway respectively.

[0018] Preferably, the upper and lower sides of the tail shovel near the front assembly frame of the trolley are inclined surfaces, and the upper side of the horizontal end of the front assembly frame of the trolley is inclined.

[0019] Preferably, the limiting arm has a groove on the side near the tail shovel, and the ratchet teeth at the upper end are inserted into the arc-shaped groove when the ratchet rises.

[0020] Preferably, the width of the arc-shaped groove is designed to be 1.5 to 2 times the width of a single ratchet tooth of the ratchet, and the depth of the groove is 3 to 5 mm higher than the width of a single ratchet tooth of the ratchet.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] By setting a hook-up component and a pressing component on one side of the front assembly of the trolley, a timely limit and anti-detachment operation can be performed when the rear assembly of the first trolley comes into contact with it due to inertia. After the inertia and reaction force end, it will automatically unlock. Not only is the structure simple and easy to disassemble and replace, but it also requires little modification to the existing P / F line conveyor system's carrying trolley and has good interchangeability. Furthermore, by replacing some parts of the carrying trolley according to the actual usage conditions of different production lines, the phenomena of "carrying off" and "carrying off" can be solved. The operation is simple, worry-free and labor-saving, and reduces labor costs. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 For the present invention Figure 1 Schematic diagram of part A;

[0025] Figure 3 For the present invention Figure 2 Schematic diagram of part B;

[0026] Figure 4 This is a schematic diagram of the front assembly structure of the vehicle according to the present invention;

[0027] Figure 5 This is a schematic diagram of the guide pin installation structure of the present invention;

[0028] Figure 6 This is a schematic diagram of the rear assembly structure of the first trolley of the present invention.

[0029] In the diagram: 1. Traction rail; 2. Traction chain; 201. Push head; 3. Load-bearing rail; 4. First trolley; 401. Rear assembly of the first trolley; 5. Second trolley; 501. Rear assembly of the second trolley; 502. Front assembly of the trolley; 503. Lifting claw; 6. Loading beam; 7. Cargo lifting device; 8. Front shovel; 9. Loading beam pin; 10. Positioning pin; 11. Limiting baffle; 111. Hook arm; 112. Limiting arm; 12. Limiting rod; 13. Receiving cavity; 14. Tail shovel; 16. Lifting shaft; 17. Ratchet; 18. Arc groove; 19. Lifting groove; 20. Guide pin; 21. Return spring. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see the appendix Figure 1-6 This application provides the following five preferred embodiments.

[0032] Example 1

[0033] A self-unlocking anti-detachment mechanism includes a first trolley 4 and a second trolley 5 sequentially arranged at the lower end of a support rail 3. A second trolley rear assembly 501 and a trolley front assembly 502 are respectively located on both sides of the second trolley 5. The first trolley rear assembly 401 is located on the side of the first trolley 4 closest to the second trolley 5. The first trolley rear assembly 401, the second trolley rear assembly 501, and the trolley front assembly 502 all include a frame and rollers, with the rollers slidably connected to the lower end of the support rail 3. The frame of the trolley front assembly 502 has an L-shaped structure, and an installation cavity is formed within the trolley front assembly 502. A [missing information - likely a design element] is formed on the horizontal side of the trolley front assembly 502. The storage cavity 13 is connected to the installation cavity. The lower ends of the first trolley 4 and the second trolley 5 are both horizontally equipped with load beams 6 via hanging columns. The lower center of the load beam 6 is vertically equipped with a cargo lifting device 7. The upper end of the load-bearing track 3 is horizontally equipped with a load-bearing track 3. The lower end of the load-bearing track 3 is horizontally movable with a traction chain 2. The lower end of the traction chain 2 is spaced apart with several push heads 201. The frame of the trolley front assembly 502 is vertically slidably inserted with lifting claws 503. The lower end of the lifting claws 503 is movably connected with a front shovel 8 via a push-pull pin. A self-rotating pin is horizontally equipped on one side of the installation cavity. The self-rotating pin is movably sleeved on one side of the front shovel 8.

[0034] The front shovel 8 extends out of the mounting cavity on one side and is positioned directly above the horizontal end of the front assembly 502 frame of the trolley. In its natural state, the front shovel 8 is tilted downwards and points towards the horizontal end of the front assembly 502 frame of the trolley.

[0035] When the lifting claw 503 is raised, the upper end of the lifting claw 503 is inserted into the lower end of the push head 201, and the front shovel 8 is set at the horizontal end of the trolley front assembly 502 frame tilted downward. At this time, the traction chain 2 moves and can drive the trolley front assembly 502 and the entire second trolley 5 to move along the traction chain 2 and the bearing rail 3 through the lifting claw 503, so that the entire bearing trolley moves.

[0036] When the tail shovel 14 contacts the front assembly 502 of the trolley, under the action of the keyway and the slider, the lower inclined surface of the tail shovel 14 contacts the horizontal inclined surface of the frame of the front assembly 502 of the trolley, and the tail shovel 14 automatically lifts up. Then, the tail shovel 14 pushes the front shovel 8 to lift up. When the front shovel 8 is lifted, the lifting claw 503 falls down, the push head 201 disengages from the synchronous drive of the lifting claw 503, and the second trolley 5 stops on one side of the first trolley 4.

[0037] Example 2

[0038] Based on Embodiment 1, the tail shovel 14 is connected to the front assembly 502 of the trolley to prevent detachment. The connection assembly includes a limiting baffle 11 and a ratchet 17. The limiting baffle 11 and the ratchet 17 are respectively rotatably disposed in the mounting cavity and the receiving cavity 13. A load beam pin 9 is horizontally provided at the lower end of the mounting cavity. A positioning pin 10 is horizontally provided on the side of the mounting cavity near the load beam pin 9. The positioning pin 10 is movably sleeved on the lower end of the limiting baffle 11. In its natural state, the limiting baffle 11 abuts against the load beam pin 9 on one side and is limited in place. A limiting rod 12 is horizontally provided on the upper end of the mounting cavity near the positioning pin 10. When assembly 502 contacts the rear assembly 401 of the first trolley, one side of the tail shovel 14 abuts against the limiting baffle 11, and at this time, one side of the limiting baffle 11 abuts against the limiting rod 12. The limiting baffle 11 is provided with a hook arm 111 and a limiting arm 112 on both sides near the ratchet 17. The outer periphery of the ratchet 17 is symmetrically provided with several ratchet teeth. When the limiting baffle 11 contacts the limiting rod 12, one side of the hook arm 111 is hooked against the ratchet teeth on one side of the ratchet 17. When the front assembly 502 of the trolley overlaps with the tail shovel 14, the tail shovel 14 pushes one side of the limiting arm 112 of the limiting baffle 11, so that one side of the hook arm 111 hooks against one side of the ratchet teeth of the ratchet 17.

[0039] Example 3

[0040] Based on Embodiment 2, a pressing component is provided. The pressing component is located on both sides of the frame of the trolley front assembly 502. The pressing component includes a lifting shaft 16 and a guide pin 20. A ratchet 17 is sleeved on the lifting shaft 16. Lifting slots 19 are vertically and movablely provided on both sides of the frame of the trolley front assembly 502 near the storage cavity 13. Guide slots are vertically provided on both sides of the frame of the trolley front assembly 502 located on the side of the lifting slot 19. Guide pins 20 are vertically inserted into both guide slots. The lifting shaft 16 passes through the two lifting slots 19 on both sides. Two guide pins 20 are set in a movable sleeve. Each guide pin 20 is located in the lifting groove 19 and a return spring 21 is sleeved on its upper end. The lower end of the return spring 21 is in contact with the upper end of the lifting shaft 16. When the hook arm 111 is hooked with the ratchet 17, the hook arm 111, under the action of abutting the ratchet 17 on the side, lifts the ratchet 17 and the lifting shaft 16 upward. At this time, the ratchet teeth at the upper end of the ratchet 17 are inserted into the arc-shaped groove 18. Then, under the action of inertia and reaction force, the tail shovel 14, the limit baffle 11 and the ratchet 17 restrain each other to prevent the second trolley 5 from "slipping".

[0041] The guide pin 20 passes through the lower end of the frame of the front assembly 502 of the trolley and is fixed by washers and cotter pins to prevent loosening.

[0042] Example 4

[0043] Based on Embodiment 3, when the inertia and reaction force of the second trolley 5 weakens or even disappears completely, it can be automatically unlocked. A tail shovel 14 is movably provided on one side of the rear assembly 401 of the first trolley. The lower end of the tail shovel 14 is connected to the upper end of the horizontal end of the frame of the front assembly 502 of the trolley. An arc-shaped groove 18 is formed on one side of the lower end of the tail shovel 14, and the arc-shaped groove 18 is inserted and connected to one side of the ratchet 17. A sliding groove is formed on one side of the rear assembly 401 of the first trolley. Two symmetrical grooves are formed on both sides of the sliding groove. A keyway, the tail shovel 14 is vertically slidably inserted into the sliding groove on one side, the tail shovel 14 is placed in the sliding groove and the side near the keyway is provided with a horizontal slider, the slider is respectively slidably inserted into the keyway, the upper and lower sides of the tail shovel 14 near the frame of the trolley front assembly 502 are both inclined surfaces, the upper side of the horizontal end of the frame of the trolley front assembly 502 is also inclined, the limit arm 112 is provided with a groove on the side near the tail shovel 14, and the ratchet 17 is inserted into the arc-shaped groove 18 when it rises;

[0044] like Figure 3 When the second trolley 5 stops due to inertia, under the action of the two return springs 21 and the gravity of the lower part of the limiting baffle 11, the limiting baffle 11 tilts and rotates downward. The groove on one side of the limiting arm 112 overlaps with the side of the tail shovel 14. At this time, the hook arm 111 disengages from the ratchet 17 as the limiting baffle 11 rotates. The ratchet 17 can rotate freely at this time. When the first trolley 4 moves, the tail shovel 14 can directly drive the ratchet 17 to rotate. The ratchet 17 can automatically disengage from the arc groove 18 of the tail shovel 14 to complete automatic unlocking. Then, the limiting baffle 11 rotates to the initial state under its own gravity and waits for the tail shovel 14 to push the limiting arm 112 again under the limiting action of the load beam pin 9, so that the limiting baffle 11 tilts and hooks the ratchet 17.

[0045] Example 5

[0046] Based on Example 4, the applicability is improved. The width of the arc-shaped groove 18 is designed to be 1.5 to 2 times the width of a single ratchet tooth of the ratchet 17, and the depth of the groove is 3 to 5 mm higher than the single ratchet tooth of the ratchet 17. It serves as a buffer for the ratchet 17 to connect with the tail shovel 14, and can also adapt to the curves and other changing bearing track positions of the P / F production line, preventing the inability to connect with the front assembly 502 of the trolley and the occurrence of "slippage".

[0047] Furthermore, this device has a simple and reliable structure, and is easy to replace and maintain.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-unlocking anti-detachment mechanism, characterized in that: The self-unlocking anti-detachment mechanism includes: The bearing track (3) has a first trolley (4) and a second trolley (5) arranged sequentially at its lower end. The second trolley (5) has a second trolley rear assembly (501) and a trolley front assembly (502) arranged on both sides respectively. The first trolley (4) has a first trolley rear assembly (401) arranged on the side of the first trolley (4) close to the second trolley (5). The first trolley rear assembly (401), the second trolley rear assembly (501) and the trolley front assembly (502) all include a frame and rollers, and the rollers are slidably connected to the lower end of the bearing track (3). The frame of the front assembly (502) of the trolley is arranged in an L-shaped structure. The front assembly (502) of the trolley has an installation cavity groove. The front assembly (502) of the trolley has a storage cavity (13) on one side of the horizontal end. The storage cavity (13) is connected to the installation cavity groove. The mounting assembly includes a limiting baffle (11) and a ratchet (17), which are respectively rotatably disposed in the mounting cavity and the storage cavity (13); The pressing assembly is located on both sides of the frame of the front assembly (502) of the trolley. The pressing assembly includes a lifting shaft (16) and a guide pin (20). A ratchet (17) is sleeved on the lifting shaft (16). The rear assembly (401) of the first trolley is provided with a tail shovel (14) on one side. The lower end of the tail shovel (14) is connected to the upper end of the horizontal end of the frame of the front assembly (502) of the trolley. An arc groove (18) is provided on one side of the lower end of the tail shovel (14), and the arc groove (18) is connected to one side of the ratchet (17). The lower end of the mounting cavity is provided with a load beam pin (9) horizontally, and a positioning pin (10) is provided horizontally on the side of the mounting cavity near the load beam pin (9). The positioning pin (10) is movably sleeved on the lower end of the limiting baffle (11), and in its natural state, the limiting baffle (11) is located on one side of the load beam pin (9) and abuts against the load beam pin (9) for limiting. A limiting rod (12) is horizontally provided on the upper side of the mounting cavity near the positioning pin (10). When the front assembly (502) of the trolley comes into contact with the rear assembly (401) of the first trolley, the tail shovel (14) abuts against the limiting baffle (11), and at this time the limiting baffle (11) abuts against the limiting rod (12). The limiting baffle (11) is provided with a hook arm (111) and a limiting arm (112) on both sides near the ratchet (17). The ratchet (17) is symmetrically provided with a number of ratchet teeth on its outer periphery. When the limiting baffle (11) is in contact with the limiting rod (12), the hook arm (111) is hooked to the ratchet teeth on one side of the ratchet (17).

2. The self-unlocking anti-detachment mechanism according to claim 1, characterized in that: The lower ends of the first trolley (4) and the second trolley (5) are both equipped with a load beam (6) horizontally via a lifting column, and a cargo lifting device (7) is vertically installed at the center of the lower end of the load beam (6).

3. The self-unlocking anti-detachment mechanism according to claim 2, characterized in that: The front assembly (502) of the trolley has vertically movable lifting slots (19) on both sides of the frame near the storage cavity (13). The frame of the front assembly (502) of the trolley has vertically movable guide slots on one side of the lifting slots (19). Guide pins (20) are vertically inserted into the two guide slots. The lifting shaft (16) is connected to the two lifting slots (19) on both sides and is movably sleeved with the two guide pins (20). The upper end of the guide pins (20) is sleeved with a return spring (21) in the lifting slot (19). The lower end of the return spring (21) is in contact with the upper end of the lifting shaft (16).

4. The self-unlocking anti-detachment mechanism according to claim 3, characterized in that: The first trolley rear assembly (401) has a sliding groove on one side, and two keyways are symmetrically opened on both sides of the sliding groove. The tail shovel (14) is vertically slidably inserted into the sliding groove on one side. The tail shovel (14) is placed in the sliding groove and a slider is horizontally provided on the side near the keyway. The slider is slidably inserted into the keyway respectively.

5. The self-unlocking anti-detachment mechanism according to claim 4, characterized in that: The tail shovel (14) is inclined on both the upper and lower sides of the frame of the trolley front assembly (502), and the upper side of the horizontal end of the frame of the trolley front assembly (502) is inclined.

6. The self-unlocking anti-detachment mechanism according to claim 5, characterized in that: The limiting arm (112) has a groove on the side near the tail shovel (14), and the ratchet teeth at the upper end of the ratchet (17) are inserted into the arc-shaped groove (18) when the ratchet (17) rises.

7. The self-unlocking anti-detachment mechanism according to claim 6, characterized in that: The width of the arc-shaped groove (18) is designed to be 1.5 to 2 times the width of a single ratchet tooth of the ratchet (17), and the depth of the groove is 3 to 5 mm higher than the single ratchet tooth of the ratchet (17).

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