Transportation device for plastic trays

Abstract

The utility model discloses a transport device for plastic pallets, which comprises a pull rod, a pallet fork, a hydraulic mechanism and moving wheels, the pull rod is connected with the pallet fork through the hydraulic mechanism, the moving wheels are arranged at the bottom of the pallet fork, an auxiliary mechanism is arranged on the pallet fork, and the auxiliary mechanism comprises a blocking telescopic block, a pressing block, a first rack, a second rack, a first gear and a second gear. The pressing block is connected with the upper end of the pallet fork in an up-down moving mode, the first rack is fixedly connected with the lower end of the pressing block, the first gear is in meshed connection with the first rack, the first gear is fixedly connected with the second gear, the second gear is fixedly connected with the second rack, the second rack is fixedly connected with the blocking telescopic block, and the blocking telescopic block is of a multi-stage telescopic structure. By arranging the auxiliary mechanism, after the pallet fork is inserted into the longitudinal recess in the bottom of the plastic tray, the telescopic block can be controlled to extend out of the side face of the pallet fork and be inserted into the transverse recess in the bottom of the plastic tray, the plastic tray is prevented from sliding, and the safety and reliability of the device are improved.

Description

Technical Field

[0001] This utility model relates to the field of transportation device technology, and in particular to a transportation device for plastic pallets. Background Technology

[0002] Plastic pallet transport devices are fundamental equipment in logistics warehousing for the efficient handling and stacking of goods. Their core function is to support the plastic pallet and the goods on top using forks, enabling short-distance transport and transfer. Traditional devices often rely on forks inserting into the gap at the bottom of the pallet and using a hydraulic lifting system to lift and move the pallet. This design is compatible with standardized pallet sizes, offers flexible operation, and is relatively low-cost, making it particularly suitable for warehouse racking, loading, and unloading scenarios. However, the mechanical interaction between the forks and the pallet suffers from insufficient stability. Because the fork surface is typically made of smooth metal, while the bottom surface of the plastic pallet has limited friction, the pallet is prone to lateral sliding due to inertia during transport, which can lead to serious damage to the goods or even personal injury if the pallet slips off the forks. Therefore, the field of transport devices needs to develop a device that can transport plastic pallets more safely and reliably. Utility Model Content

[0003] In view of the above-mentioned prior art, the present invention provides a transportation device for plastic pallets, and the main technical problem to be solved is how to transport plastic pallets more safely and reliably.

[0004] To achieve the above objectives, the technical solution of this utility model embodiment is implemented as follows:

[0005] A transport device for plastic pallets includes a pull rod, forks, a hydraulic mechanism, and casters. The pull rod is connected to the forks via the hydraulic mechanism. The casters are located at the bottom of the forks. An auxiliary mechanism is provided on the forks. The auxiliary mechanism includes a blocking telescopic block, a pressure block, a first rack, a second rack, a first gear, and a second gear. The pressure block is vertically movably connected to the upper end of the forks. The first rack is fixedly connected to the lower end of the pressure block. The first gear meshes with the first rack. The first gear is fixedly connected to the second gear. The second gear is fixedly connected to the second rack. The second rack is fixedly connected to the blocking telescopic block. The blocking telescopic block is horizontally movably connected to the side of the forks. The blocking telescopic block is configured as a multi-stage telescopic structure.

[0006] Preferably, the blocking telescopic block includes a blocking sleeve, a blocking block, a third rack, a fourth rack, and a third gear. The second rack is fixedly connected to one side of the blocking sleeve. The blocking block is disposed inside the blocking sleeve. The fourth rack is fixedly connected to the upper end of the blocking block. The third gear is disposed at the upper end of the blocking sleeve and rotatably connected to the blocking sleeve. The third rack is disposed above the blocking sleeve and fixedly connected to the fork. The upper end of the third gear meshes with the third rack, and the lower end of the third gear meshes with the fourth rack.

[0007] Preferably, the auxiliary mechanism is provided on both the front and rear sides of the fork, and the auxiliary mechanism is symmetrically arranged on the left and right sides of the fork.

[0008] Preferably, both the front and rear ends of the pressing block are rounded.

[0009] Preferably, the diameter of the second gear is larger than the diameter of the first gear.

[0010] Preferably, a torsion spring is provided inside the first gear and the second gear.

[0011] Preferably, the blocking block has an arc-shaped protrusion on the side away from the blocking sleeve.

[0012] Preferably, the lower end of the blocking block is provided with a roller.

[0013] Preferably, the lower end of the blocking sleeve is provided with a track that cooperates with the roller.

[0014] The beneficial effects of this utility model are as follows: By setting an auxiliary mechanism, this application can control the blocking telescopic block to extend from the side of the fork and insert into the lateral recess at the bottom of the plastic pallet after the fork is inserted into the longitudinal recess at the bottom of the plastic pallet. When the fork is lifted under the push of the hydraulic system, the pressure block contacts the bottom of the plastic pallet and moves downward under pressure. The downward movement of the pressure block drives the first gear to rotate through the first rack, and the first gear drives the second rack to move through the second gear, thereby driving the blocking telescopic block to move. This allows the blocking telescopic block to extend from the side of the fork and insert into the lateral recess at the bottom of the plastic pallet, preventing the plastic pallet from sliding and improving the safety and reliability of the device. At the same time, the blocking telescopic block can perform multi-stage telescopic extension and contraction, increasing the length of the blocking telescopic block and further improving the anti-slip effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a plastic pallet transport device according to an embodiment of this application;

[0016] Figure 2 This is a schematic diagram of the auxiliary mechanism in the embodiments of this application;

[0017] Figure 3 This is a cross-sectional view of the retracted state of the telescopic block in an embodiment of this application;

[0018] Figure 4 This is a cross-sectional view of the extension state of the telescopic block in an embodiment of this application;

[0019] Explanation of icon numbers:

[0020] 1. Tie rod; 2. Forks; 3. Hydraulic mechanism; 4. Casters; 5. Auxiliary mechanisms;

[0021] 401. Blocking telescopic block; 402. Pressure block; 403. First rack; 404. Second rack; 405. First gear; 406. Second gear; 407. Blocking sleeve; 408. Blocking block; 409. Third rack; 410. Fourth rack; 411. Third gear; 412. Arc-shaped slider; 413. Roller; 414. Track. Detailed Implementation

[0022] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in this specification of this utility model is for the purpose of describing particular embodiments only and is not intended to limit the utility model. In the following description, the expression "some embodiments" refers to a subset of all possible embodiments; however, it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0023] Example 1

[0024] See attached document Figure 1-4This application provides a transport device for plastic pallets, including a pull rod 1, a fork 2, a hydraulic mechanism 3, and a moving wheel 4. The pull rod 1 is connected to the fork 2 through the hydraulic mechanism 3. The moving wheel 4 is disposed at the bottom of the fork 2. An auxiliary mechanism 5 is disposed on the fork 2. The auxiliary mechanism 5 includes a blocking telescopic block 401, a pressure block 402, a first rack 403, a second rack 404, a first gear 405, and a second gear 406. The pressure block 402 is movably connected to the upper end of the fork 2. The first rack 403 is fixedly connected to the lower end of the pressure block 402. The first gear 405 is meshed with the first rack 403. The first gear 405 is fixedly connected to the second gear 406. The second gear 406 is fixedly connected to the second rack 404. The second rack 404 is fixedly connected to the blocking telescopic block 401. The blocking telescopic block 401 is movably connected to the side of the fork 2. The blocking telescopic block 401 is configured as a multi-stage telescopic structure. This device, through the auxiliary mechanism 5, enables the blocking telescopic block 401 to extend from the side of the fork 2 and insert into the lateral recess at the bottom of the plastic pallet after the fork 2 is inserted into the longitudinal recess at the bottom of the plastic pallet. When the fork 2 is lifted by the hydraulic system, the pressure block 402 contacts the bottom of the plastic pallet and moves downward under pressure. The downward movement of the pressure block 402 drives the first gear 405 to rotate through the first rack 403. The first gear 405 drives the second rack 404 to move through the second gear 406, which in turn drives the blocking telescopic block 401 to move. This allows the blocking telescopic block 401 to extend from the side of the fork 2 and insert into the lateral recess at the bottom of the plastic pallet, preventing the plastic pallet from sliding and improving the safety and reliability of the device. At the same time, the blocking telescopic block 401 can extend and retract in multiple stages, increasing its length and further enhancing the anti-slip effect.

[0025] Specifically, the blocking telescopic block 401 includes a blocking sleeve 407, a blocking block 408, a third rack 409, a fourth rack 410, and a third gear 411. The second rack 404 is fixedly connected to one side of the blocking sleeve 407. The blocking block 408 is disposed inside the blocking sleeve 407. The fourth rack 410 is fixedly connected to the upper end of the blocking block 408. The third gear 411 is disposed at the upper end of the blocking sleeve 407 and rotatably connected to the blocking sleeve 407. The third rack 409 is disposed above the blocking sleeve 407 and fixedly connected to the fork 2. The upper end of the third gear 411 meshes with the third rack 409, and the lower end of the third gear 411 meshes with the fourth rack 410. When the second rack 404 and the blocking sleeve 407 are pushed out together, the third gear 411 is pushed and rotated by the third rack 409, which in turn drives the fourth rack 410 to move out relative to the blocking sleeve 407. At the same time, the fourth rack 410 is fixedly connected to the blocking block 408, which in turn drives the blocking block 408 to also be pushed out. Through the multi-stage telescopic structure, the blocking telescopic block 401 is effectively inserted into the lateral recess at the bottom of the plastic tray, which improves the reliability of the device.

[0026] Specifically, the auxiliary mechanism 5 is provided on both the front and rear sides of the fork 2, and the auxiliary mechanism 5 is symmetrically arranged on the left and right sides of the fork 2. By providing multiple auxiliary mechanisms 5, this device can enhance the fixing and anti-slip effect.

[0027] Specifically, the front and rear ends of the pressure block 402 are rounded. By rounding the front and rear ends of the pressure block 402, this device can prevent the pressure block 402 from getting stuck when the forks 2 are inserted and removed.

[0028] Specifically, the diameter of the second gear 406 is larger than the diameter of the first gear 405. This larger diameter increases the transmission ratio, allowing the second rack 404 to extend a greater distance, ensuring that the telescopic block 401 can smoothly insert into the lateral recess at the bottom of the plastic pallet. In this embodiment, the diameter ratio of the second gear 406 to the first gear 405 is 1.3:1. It should be understood that this ratio can also be adjusted according to the dimensions of the plastic pallet and forks 2, as needed on-site.

[0029] Specifically, torsion springs are installed inside the first gear 405 and the second gear 406. By installing torsion springs, this device can drive the first gear 405 and the second gear 406 to rotate when the pressure block 402 is not under pressure, thereby causing the blocking telescopic block 401 to retract and the pressure block 402 to spring up, facilitating unloading.

[0030] Example 2

[0031] See attached document Figure 2-4 The difference between this embodiment and Embodiment 1 is that the blocking block 408 has an arc-shaped protrusion on the side away from the blocking sleeve 407. By providing the arc-shaped protrusion, this device can reduce the risk of jamming during loading or unloading.

[0032] Specifically, a roller 413 is provided at the lower end of the blocking block 408. By providing the roller 413, this device makes the sliding out or sliding in of the blocking block 408 smoother.

[0033] Specifically, the lower end of the blocking sleeve 407 is provided with a track 414 that cooperates with the roller 413. By providing the track 414, this device can cooperate with the roller 413 to improve the smoothness of the sliding of the blocking block 408, and at the same time limit the roller 413 to prevent the blocking block 408 from sliding out completely.

[0034] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model should be determined by the protection scope of the stated claims.

Claims

1. A transport device for plastic pallets, comprising a pull rod (1), forks (2), a hydraulic mechanism (3), and casters (4), wherein the pull rod (1) is connected to the forks (2) via the hydraulic mechanism (3), and the casters (4) are disposed at the bottom of the forks (2), characterized in that, An auxiliary mechanism (5) is provided on the fork (2). The auxiliary mechanism (5) includes a blocking telescopic block (401), a pressure block (402), a first rack (403), a second rack (404), a first gear (405), and a second gear (406). The pressure block (402) is movably connected to the upper end of the fork (2). The first rack (403) is fixedly connected to the lower end of the pressure block (402). The first gear (405) meshes with the first rack (403). The first gear (405) is fixedly connected to the second gear (406). The second gear (406) is fixedly connected to the second rack (404). The second rack (404) is fixedly connected to the blocking telescopic block (401). The blocking telescopic block (401) is movably connected to the side of the fork (2). The blocking telescopic block (401) is configured as a multi-stage telescopic structure.

2. The transport device for a plastic pallet according to claim 1, characterized in that, The blocking telescopic block (401) includes a blocking sleeve (407), a blocking block (408), a third rack (409), a fourth rack (410), and a third gear (411). The second rack (404) is fixedly connected to one side of the blocking sleeve (407). The blocking block (408) is disposed inside the blocking sleeve (407). The fourth rack (410) is fixedly connected to the upper end of the blocking block (408). The third gear (411) is disposed at the upper end of the blocking sleeve (407) and rotatably connected to the blocking sleeve (407). The third rack (409) is disposed above the blocking sleeve (407) and fixedly connected to the fork (2). The upper end of the third gear (411) meshes with the third rack (409), and the lower end of the third gear (411) meshes with the fourth rack (410).

3. A transport device for plastic pallets according to claim 1, characterized in that, The auxiliary mechanism (5) is provided on both the front and rear sides of the fork (2), and the auxiliary mechanism (5) is symmetrically arranged on the left and right sides of the fork (2).

4. A transport device for plastic pallets according to claim 1, characterized in that, The front and rear ends of the pressure block (402) are rounded.

5. A transport device for plastic pallets according to claim 1, characterized in that, The diameter of the second gear (406) is larger than the diameter of the first gear (405).

6. A transport device for a plastic pallet according to claim 1, characterized in that, Torsion springs are provided inside the first gear (405) and the second gear (406).

7. A transport device for plastic pallets according to claim 2, characterized in that, The blocking block (408) has an arc-shaped protrusion on the side away from the blocking sleeve (407).

8. A transport device for a plastic pallet according to claim 7, characterized in that, The lower end of the blocking block (408) is provided with a roller (413).

9. A transport device for a plastic pallet according to claim 8, characterized in that, The lower end of the blocking sleeve (407) is provided with a track (414) that cooperates with the roller (413).

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