Forklift pallet fork assembly

Abstract

A forklift pallet fork assembly comprises a rotating device, a bidirectional pushing assembly, a pallet fork device and a balance weight device, the bidirectional pushing assembly comprises a mounting frame and a gear transmission part, the mounting frame is arranged on the rotating device, a first toothed plate and a second toothed plate are arranged in the mounting frame in a sliding mode, and the gear transmission part is arranged in the mounting frame; the gear transmission part is engaged with the first toothed plate and the second toothed plate, and the gear transmission part is used for driving the first toothed plate and the second toothed plate to move reversely; the mounting frame is arranged between the pallet fork device and the counterweight device, the pallet fork device is arranged on the first toothed plate, and the counterweight device is arranged on the second toothed plate. Therefore, on the premise that the bearing capacity can be guaranteed, the forklift can conveniently transport goods in a narrow working space, meanwhile, the forklift (the forklift provided with the forklift pallet fork assembly) can be applied to various working scenes, and the application range of the forklift is widened.

Description

Technical Field

[0001] The invention relates to the technical field of forklift accessories, and in particular to a forklift fork assembly. Background Art

[0002] Forklifts are industrial handling vehicles, mainly composed of a body and fork assemblies. There are some relatively narrow working spaces in large production lines, which are not convenient for traditional forklifts to work. Therefore, in order to operate in a relatively narrow working space, a specific forklift needs to be configured. Since the fork is located at the front end of the body, the length of the fork overlaps with the length of the body, so the body and fork of this specific forklift are both small and have limited carrying capacity. Configuring a specific forklift (body and fork) for such a narrow working space not only increases the investment cost of the production line, the staff needs to replace the forklift in a specific area, and reduces work efficiency. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the above-mentioned technology at least to some extent.

[0004] To this end, the purpose of the present invention is to propose a forklift fork assembly that can enable a forklift to conveniently transport goods in a narrow working space while ensuring the carrying capacity, and at the same time enable a forklift (a forklift equipped with the forklift fork assembly) to be used in a variety of work scenarios, thereby improving the scope of application of the forklift.

[0005] To achieve the above-mentioned purpose, the present invention proposes a forklift fork assembly, comprising: a rotating device, a two-way pushing assembly, a fork device and a counterweight device, wherein the two-way pushing assembly comprises: a mounting frame and a gear transmission member, the mounting frame is arranged on the rotating device, a first tooth plate and a second tooth plate are slidably arranged in the mounting frame, the gear transmission member is arranged in the mounting frame, the gear transmission member is respectively engaged with the first tooth plate and the second tooth plate, and the gear transmission member is used to drive the first tooth plate and the second tooth plate to move in the opposite direction; the mounting frame is arranged between the fork device and the counterweight device, and the fork device is arranged on the first tooth plate, and the counterweight device is arranged on the second tooth plate.

[0006] In one embodiment of the present invention, the gear transmission member includes: a first motor, a rotating shaft, a first gear, an electronically controlled gearbox and a second gear, wherein the first motor is arranged in the installation frame, one end of the rotating shaft is arranged at the driving end of the first motor, the first gear is arranged on the rotating shaft, and the first gear is meshed with the first tooth plate, the electronically controlled gearbox is arranged in the installation frame, the input end of the electronically controlled gearbox is connected to the other end of the rotating shaft, the second gear is arranged at the output end of the electronically controlled gearbox, and the second gear is meshed with the second tooth plate.

[0007] In one embodiment of the present invention, the fork device comprises: a fork frame and a plurality of fork members, wherein the fork frame is arranged on the first tooth plate, and the plurality of fork members are respectively arranged on the fork frame, wherein the fork members are provided with a plurality of limit protection devices.

[0008] In one embodiment of the present invention, the fork member includes: a first hydraulic telescopic device, a fork body, a mounting plate, a first rubber cover, a second hydraulic telescopic device, a back plate, an electrorheological solution and a power supply device, wherein the first hydraulic telescopic device is arranged on the fork frame, the fork body is connected to the driving end of the first hydraulic telescopic device through a connecting plate, the mounting plate is arranged on the upper part of the fork body, the first rubber cover is arranged on the mounting plate, the second hydraulic telescopic device is arranged on the lower part of the fork body, and the back plate is arranged on the driving end of the second hydraulic telescopic device; the electrorheological solution is arranged in the enclosed space formed by the first rubber cover and the mounting plate, the power supply device is arranged on the mounting plate, and the power supply device is electrically connected to the electrorheological solution, and the power supply device is configured to change the electrorheological solution from liquid to solid by adjusting the output voltage.

[0009] In one embodiment of the present invention, the limit protection device includes: a barrel body, a sliding load-bearing rod, a spring and a second rubber cover, wherein the barrel body is arranged on the mounting plate, the sliding load-bearing rod is slidably connected to the barrel body, one end of the spring is connected to the lower inner wall of the barrel body, and the other end of the spring is connected to the lower part of the sliding load-bearing rod, the second rubber cover is arranged on the mounting plate, and the barrel body and the sliding load-bearing rod are respectively arranged in the enclosed space formed by the second rubber cover and the mounting plate.

[0010] In one embodiment of the present invention, the rotating device includes: a forklift connecting plate and a second motor, wherein the second motor is arranged on the forklift connecting plate, the mounting frame is arranged on the driving end of the second motor, a tube body is arranged on the mounting frame, a supporting slider is arranged on the upper end of the tube body, a limiting slide groove is provided on the forklift connecting plate, and the supporting slider is slidably connected to the limiting slide groove.

[0011] In one embodiment of the present invention, the counterweight device includes: a placement box, a limit screw, a counterweight block and a conical nut, wherein the placement box is connected to the second tooth plate, the limit screw is fixedly arranged inside the placement box, the counterweight block is arranged in the placement box, and the counterweight block is slidingly connected to the limit screw, and the limit screw is threadedly connected to the conical nut.

[0012] In one embodiment of the present invention, a plurality of slots are provided at the lower portion of the counterweight block, and a plurality of handles are provided at the upper portion of the counterweight block. The plurality of slots correspond to the plurality of handles one by one, and a handle on one counterweight block is snapped into a slot on another counterweight block.

[0013] In one embodiment of the present invention, it also includes: a first support plate and a second support plate, wherein the first support plate and the first tooth plate are symmetrically arranged with the central axis of the first gear as the axis of symmetry, the first support plate is slidably connected to the mounting frame, the first support plate and the first tooth plate are both provided with a first T-shaped groove at the lower part, the lower inner wall of the mounting frame is provided with two first T-shaped sliders, and the two first T-shaped sliders are respectively slidably connected to the two first T-shaped grooves; the second support plate and the second tooth plate are symmetrically arranged with the central axis of the second gear as the axis of symmetry, the second support plate is slidably connected to the mounting frame, the second support plate and the upper part of the second tooth plate are both provided with a second T-shaped groove, the upper inner wall of the mounting frame is provided with two second T-shaped sliders, and the two second T-shaped sliders are respectively slidably connected to the two second T-shaped grooves.

[0014] Beneficial effects of the present invention:

[0015] The working positions of the fork device and the counterweight device are adjusted respectively by the rotating device so that the fork device faces the target cargo, and the fork device is connected to the forklift bracket under the target cargo through the two-way pushing component, so that the fork device can pick up and place the cargo on both sides of the forklift in a narrow working space. There is no need for the staff to repeatedly adjust the position of the vehicle, nor to replace the forklift before entering the narrow working space, which improves the application range of the forklift (body and fork assembly), reduces the investment cost of the forklift, simplifies the operation, and improves the work efficiency.

[0016] The relative positions of the fork device and the counterweight device are adjusted through the bidirectional pushing assembly to balance the center of gravity of the entire forklift fork assembly and ensure the stability of the forklift during operation.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1 It is a schematic diagram of the overall structure of a forklift fork assembly according to one embodiment of the present invention;

[0020] Figure 2A schematic cross-sectional view of a forklift fork assembly according to an embodiment of the present invention;

[0021] Figure 3 It is a schematic diagram of the connection structure of the mounting plate, the first rubber cover and the limit protection device according to one embodiment of the present invention;

[0022] Figure 4 is a schematic cross-sectional view of a position limiting protection device according to an embodiment of the present invention;

[0023] Figure 5 It is a cross-sectional structural schematic diagram of a bidirectional pushing assembly according to an embodiment of the present invention;

[0024] Figure 6 is a schematic cross-sectional structural diagram of a bidirectional pushing assembly according to another embodiment of the present invention;

[0025] Figure 7 The figure is a schematic cross-sectional structural diagram of a counterweight device according to an embodiment of the present invention.

[0026] As shown in the figure: 1. Rotating device, 101. Forklift connecting plate, 102. Second motor, 103. Tube, 104. Support slider, 105. Limiting slide, 2. Bidirectional push assembly, 21. Mounting frame, 22. Gear transmission part, 221. First motor, 222. Rotating shaft, 223. First gear, 224. Electronically controlled gearbox, 225. Second gear, 23. First tooth plate, 24. Second tooth plate, 3. Fork device, 31. Fork frame, 32. Fork part, 321. First hydraulic telescopic device, 322. Fork body, 323. Mounting plate , 324, the first rubber cover, 325, the second hydraulic telescopic device, 326, the plate, 327, the electrorheological solution, 328, the power supply device, 4, the counterweight device, 41, the placement box, 42, the limit screw, 43, the counterweight block, 44, the truncated cone nut, 5, the limit protection device, 51, the barrel, 52, the sliding load-bearing rod, 53, the spring, 54, the second rubber cover, 6, the slot, 7, the handle, 8, the first support plate, 9, the second support plate, 10, the first T-type slide groove, 11, the first T-type slider, 12, the second T-type slide groove, 13, the second T-type slider. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] A forklift fork assembly according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0029] like Figure 1 and Figure 2 As shown, a forklift fork assembly of an embodiment of the present invention may include: a rotating device 1, a two-way pushing component 2, a fork device 3 and a counterweight device 4, the two-way pushing component 2 includes: a mounting frame 21 and a gear transmission member 22, the mounting frame 21 is arranged on the rotating device 1, a first tooth plate 23 and a second tooth plate 24 are slidably arranged in the mounting frame 21, the gear transmission member 22 is arranged in the mounting frame 21, and the gear transmission member 22 is meshed with the first tooth plate 23 and the second tooth plate 24 respectively.

[0030] It can be understood that the rotating device 1 described in this embodiment can adjust the working positions of the fork device 3 and the counterweight device 4 by rotating the two-way pushing assembly 2, so as to facilitate the forklift (a forklift equipped with the forklift fork assembly) to pick up and transport the target goods in a narrow working space without repeatedly adjusting the position of the narrow working space of the vehicle body.

[0031] The mounting frame 21 is disposed between the fork device 3 and the counterweight device 4 . The fork device 3 is disposed on the first tooth plate 23 , and the counterweight device 4 is disposed on the second tooth plate 24 . The gear transmission member 22 is used to drive the first tooth plate 23 and the second tooth plate 24 to perform reverse movement.

[0032] It should be noted that the counterweight device 4 described in this embodiment is used to balance the center of gravity of the entire forklift fork assembly to ensure the stability of the forklift during operation.

[0033] In order to clearly explain the above embodiment, in one embodiment of the present invention, as Figure 2 , Figure 5 and Figure 6 As shown, the gear transmission member 22 may include: a first motor 221, a rotating shaft 222, a first gear 223, an electronically controlled gearbox 224 and a second gear 225.

[0034] Among them, the first motor 221 is arranged in the installation frame 21, one end of the rotating shaft 222 is arranged at the driving end of the first motor 221, the first gear 223 is arranged on the rotating shaft 222, and the first gear 223 is meshed with the first gear plate 23, the electronically controlled gearbox 224 is arranged in the installation frame 21, the input end of the electronically controlled gearbox 224 is connected to the other end of the rotating shaft 222, the second gear 225 is arranged at the output end of the electronically controlled gearbox 224, and the second gear 225 is meshed with the second gear plate 24.

[0035] It should be noted that the first gear 223 and the second gear 225 described in this embodiment can be the same gear, and the first gear 223 and the second gear 225 are coaxially arranged, the meshing point between the first gear 223 and the first toothed plate 23 is different from the meshing point between the second gear 225 and the second toothed plate 24, and when the first motor 221 simultaneously rotates the first gear 223 and the second gear 225 through the rotating shaft 222, the two gears can drive the first toothed plate 23 and the second toothed plate 24 to move in opposite directions.

[0036] In one embodiment of the present invention, Figure 1-Figure 4 As shown, the fork device 3 may include: a fork frame 31 and a plurality of fork members 32, wherein the fork frame 31 is arranged on the first tooth plate 23, and the plurality of fork members 32 are respectively arranged on the fork frame 31, wherein a plurality of limit protection devices 5 are arranged on the fork members 32.

[0037] Furthermore, the fork member 32 includes: a first hydraulic telescopic device 321 , a fork body 322 , a mounting plate 323 , a first rubber cover 324 , a second hydraulic telescopic device 325 , a stop plate 326 , an electrorheological solution 327 and a power supply device 328 .

[0038] Among them, the first hydraulic telescopic device 321 is arranged on the fork frame 31, the fork body 322 is connected to the driving end of the first hydraulic telescopic device 321 through a connecting plate, the mounting plate 323 is arranged on the upper part of the fork body 322, the first rubber cover 324 is arranged on the mounting plate 323, the second hydraulic telescopic device 325 is arranged at the lower part of the fork body 322, and the stop plate 326 is arranged on the driving end of the second hydraulic telescopic device 325.

[0039] It can be understood that the second hydraulic telescopic device 325 described in this embodiment can drive the abutment plate 326 to abut against the lower inner wall of the fork bracket slot, and the first rubber cover 324 can abut against the upper inner wall and side wall of the fork bracket slot.

[0040] An electrorheological solution 327 is arranged in the enclosed space (first space) formed by the first rubber cover 324 and the mounting plate 323. A power supply device 328 is arranged on the mounting plate 323, and the power supply device 328 is electrically connected to the electrorheological solution 327. The power supply device 328 is configured to change the electrorheological solution 327 from liquid to solid by adjusting the output voltage.

[0041] It should be noted that when the first rubber cover 324 described in this embodiment abuts against the upper inner wall of the fork bracket slot, it will squeeze the electrorheological solution 327 in the enclosed space formed by the first rubber cover 324 and the mounting plate 323, causing the first rubber cover 324 to deform and contact the upper inner wall and two inner side walls of the slot of the fork bracket. In this form, the voltage received by the electrorheological solution 327 is adjusted by the power supply device 328, and the electrorheological solution 327 gradually changes from liquid to solid under the change of voltage, further limiting and fixing the fork bracket, thereby ensuring the stability of transportation.

[0042] It should be noted that the first rubber cover 324 may adopt a coating that increases friction.

[0043] In order to clearly explain the above embodiment, in one embodiment of the present invention, as Figure 3 and Figure 4 As shown, the limit protection device 5 may include: a barrel body 51, a sliding load-bearing rod 52, a spring 53 and a second rubber cover 54, wherein the barrel body 51 is arranged on the mounting plate 323, the sliding load-bearing rod 52 is slidably connected to the barrel body 51, one end of the spring 53 is connected to the lower inner wall of the barrel body 51, and the other end of the spring 53 is connected to the lower part of the sliding load-bearing rod 52, the second rubber cover 54 is arranged on the mounting plate 323, and the barrel body 51 and the sliding load-bearing rod 52 are respectively arranged in the enclosed space (second space) formed by the second rubber cover 54 and the mounting plate 323.

[0044] It can be understood that when the first rubber cover 324 is deformed, the bracket can slide in the barrel body 51 by pushing the sliding load-bearing rod 52 and squeeze the spring 53. When the sliding load-bearing rod 52 reaches the limit distance that can be sunk, the bracket will not continue to squeeze the first rubber cover 324 downward to protect the power supply device 328 (the power supply device 328 may include a power module power cord and electrodes, etc.).

[0045] Specifically, the present invention needs to be used in conjunction with a forklift, and by installing the rotating device 1 on the forklift, when the forklift moves to a narrow working space and needs to transport goods on both sides of the forklift, the two-way pushing component 2 can be rotated by the rotating device 1. After the fork body 322 faces the corresponding goods, the first motor 221 can drive the first gear 223 to rotate through the rotating shaft 222, and provide driving force for the electronically controlled gearbox 224. The first gear 223 can drive the fork frame 31 to move toward the direction of the goods through the first tooth plate 23. The fork frame 31 can drive the fork body 322 to be inserted into the bracket slot under the goods through the first hydraulic telescopic device 321. The electronically controlled gearbox 224 can drive the second gear 225 to rotate, and the second gear 225 can drive the counterweight device 4 to move away from the goods through the second tooth plate 24.

[0046] The forklift controls the fork body 322 to rise, and the first rubber cover 324 abuts against the upper inner wall of the bracket slot. The bracket squeezes the first rubber cover 324 and the electrorheological solution in the first space according to the shape of the slot until the bracket pushes the sliding load-bearing rod 52 to the maximum distance that it can sink. The bracket will not continue to squeeze the first rubber cover 324 downward. The second hydraulic telescopic device 325 can drive the abutment plate 326 to abut against the lower inner wall of the bracket, and adjust the voltage received by the electrorheological solution 327 through the power supply device 328. The electrorheological solution 327 gradually changes from liquid to solid under the change of voltage. The abutment support between the solid electrorheological solution 327 and the abutment plate 326 can make the fork bracket stably fixed on the fork member 32 to ensure the stability of transportation.

[0047] In one embodiment of the present invention, Figure 1 and Figure 2 As shown, the rotating device 1 may include: a forklift connecting plate 101 and a second motor 102, wherein the second motor 102 is arranged on the forklift connecting plate 101, the mounting frame 21 is arranged at the driving end of the second motor 102, a tube body 103 is arranged on the mounting frame 21, a supporting slider 104 is arranged on the upper end of the tube body 103, a limiting slide groove 105 is provided on the forklift connecting plate 101, and the supporting slider 104 is slidably connected with the limiting slide groove 105.

[0048] It can be understood that the forklift connecting plate 101 described in this embodiment can be installed on a forklift (welded or threaded), the limiting slide groove 105 is an annular groove with a T-shaped cross section, the limiting slider is an annular block with a T-shaped cross section, and the limiting slide groove 105 serves as a limiting support for the limiting slider.

[0049] In one embodiment of the present invention, Figure 2 and Figure 7 As shown, the counterweight device 4 includes: a placement box 41, a limit screw 42, a counterweight 43 and a truncated cone nut 44, wherein the placement box 41 is connected to the second tooth plate 24, the limit screw 42 is fixedly arranged inside the placement box 41, the counterweight 43 is arranged inside the placement box 41, and the counterweight 43 is slidably connected to the limit screw 42, and the limit screw 42 is threadedly connected to the truncated cone nut 44. A plurality of slots 6 are provided at the bottom of the counterweight 43, and a plurality of handles 7 are provided at the top of the counterweight 43, and the plurality of slots 6 correspond to the plurality of handles 7 one by one, and the handle 7 on one counterweight 43 is clamped in the slot 6 on another counterweight 43.

[0050] It can be understood that the counterweight block 43 described in this embodiment can be placed in the placement box 41 according to needs, and a through hole is opened on the counterweight block 43, and the through hole is slidably connected to the limit screw 42.

[0051] In one embodiment of the present invention, Figure 5 and Figure 6 As shown, it may also include: a first support plate 8 and a second support plate 9, wherein the first support plate 8 and the first tooth plate 23 are symmetrically arranged with the central axis of the first gear 223 as the symmetry axis, the first support plate 8 is slidably connected to the installation frame 21, and the first support plate 8 and the first tooth plate 23 are both provided with a first T-shaped slide groove 10 at the lower part, and the lower inner wall of the installation frame 21 is provided with two first T-shaped sliders 11, and the two first T-shaped sliders 11 are respectively slidably connected to the two first T-shaped slide grooves 10.

[0052] It can be understood that the first T-shaped slide groove 10 limits the first T-shaped sliding block 11 so that the two first T-shaped sliding blocks 11 support the first support plate 8 and the first tooth plate 23 respectively.

[0053] The second support plate 9 and the second tooth plate 24 are symmetrically arranged with the central axis of the second gear 225 as the symmetry axis. The second support plate 9 is slidably connected to the mounting frame 21. The second support plate 9 and the second tooth plate 24 are both provided with a second T-shaped slide groove 12 on the upper part. Two second T-shaped sliders 13 are provided on the upper inner wall of the mounting frame 21. The two second T-shaped sliders 13 are slidably connected to the two second T-shaped slide grooves 12 respectively.

[0054] It can be understood that the second T-shaped slide groove 12 limits the second T-shaped slide block 13 so that the two second T-shaped slide blocks 13 support the second support plate 9 and the second tooth plate 24 respectively.

[0055] It should be noted that a reduction gearbox is provided on the driving end of the motors mentioned in the above embodiments (for example, the first motor 221, the second motor 102, etc.), the driving end of the motor is connected to the input end of the reduction gearbox, and the output end of the reduction gearbox constitutes the driving end of the motor. The speed of the motor output is adjusted by the reduction gearbox, and the motor is equipped with a brake, which can quickly stop the motor from running.

[0056] In summary, a forklift fork assembly according to an embodiment of the present invention can ensure the carrying capacity while enabling the forklift to conveniently transport goods in a narrow working space, and at the same time enables the forklift (a forklift equipped with the forklift fork assembly) to be used in a variety of work scenarios, thereby improving the scope of application of the forklift.

[0057] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0058] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0059] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A forklift fork assembly, characterized in that: include: A rotating device (1), a bidirectional pushing assembly (2), a fork device (3) and a counterweight device (4); The bidirectional pushing assembly (2) comprises: a mounting frame (21) and a gear transmission member (22); the mounting frame (21) is arranged on the rotating device (1); a first tooth plate (23) and a second tooth plate (24) are slidably arranged in the mounting frame (21); the gear transmission member (22) is arranged in the mounting frame (21); the gear transmission member (22) is meshed with the first tooth plate (23) and the second tooth plate (24) respectively; the gear transmission member (22) is used to drive the first tooth plate (23) and the second tooth plate (24) to move in the opposite direction; The mounting frame (21) is arranged between the fork device (3) and the counterweight device (4), the fork device (3) is arranged on the first tooth plate (23), and the counterweight device (4) is arranged on the second tooth plate (24).

2. The forklift fork assembly according to claim 1, characterized in that , the gear transmission member (22) comprises: a first motor (221), a rotating shaft (222), a first gear (223), an electronically controlled gearbox (224) and a second gear (225); The first motor (221) is arranged in the installation frame (21), one end of the rotating shaft (222) is arranged at the driving end of the first motor (221), the first gear (223) is arranged on the rotating shaft (222), and the first gear (223) and the first tooth plate (23) are meshed with each other, the electronically controlled gearbox (224) is arranged in the installation frame (21), the input end of the electronically controlled gearbox (224) is connected to the other end of the rotating shaft (222), and the second gear (225) is arranged at the output end of the electronically controlled gearbox (224), and the second gear (225) and the second tooth plate (24) are meshed with each other.

3. The forklift fork assembly according to claim 1, characterized in that: The fork device (3) comprises: a fork frame (31) and a plurality of fork members (32); wherein the fork frame (31) is arranged on the first tooth plate (23), and the plurality of fork members (32) are respectively arranged on the fork frame (31); wherein the fork members (32) are provided with a plurality of limit protection devices (5).

4. The forklift fork assembly according to claim 3, characterized in that The fork member (32) includes: a first hydraulic telescopic device (321), a fork body (322), a mounting plate (323), a first rubber cover (324), a second hydraulic telescopic device (325), a stop plate (326), an electrorheological solution (327) and a power supply device (328); Wherein, the first hydraulic telescopic device (321) is arranged on the fork frame (31), the fork body (322) is connected to the driving end of the first hydraulic telescopic device (321) through a connecting plate, the mounting plate (323) is arranged on the upper part of the fork body (322), the first rubber cover (324) is arranged on the mounting plate (323), the second hydraulic telescopic device (325) is arranged on the lower part of the fork body (322), and the abutment plate (326) is arranged on the driving end of the second hydraulic telescopic device (325); The electrorheological solution (327) is arranged in a closed space formed by the first rubber cover (324) and the mounting plate (323), the power supply device (328) is arranged on the mounting plate (323), and the power supply device (328) is electrically connected to the electrorheological solution (327), and the power supply device (328) is configured to change the electrorheological solution (327) from liquid to solid by adjusting the output voltage.

5. The forklift fork assembly according to claim 4, characterized in that: The position limiting protection device (5) comprises: a barrel body (51), a sliding load-bearing rod (52), a spring (53) and a second rubber cover (54); wherein the barrel body (51) is arranged on the mounting plate (323), the sliding load-bearing rod (52) is slidably connected to the barrel body (51), one end of the spring (53) is connected to the lower inner wall of the barrel body (51), and the other end of the spring (53) is connected to the lower part of the sliding load-bearing rod (52), the second rubber cover (54) is arranged on the mounting plate (323), and the barrel body (51) and the sliding load-bearing rod (52) are respectively arranged in a closed space formed by the second rubber cover (54) and the mounting plate (323).

6. The forklift fork assembly according to claim 1, characterized in that: The rotating device (1) comprises: a forklift connecting plate (101) and a second motor (102); wherein the second motor (102) is arranged on the forklift connecting plate (101), the mounting frame (21) is arranged at the driving end of the second motor (102), a tube body (103) is arranged on the mounting frame (21), a supporting slider (104) is arranged at the upper end of the tube body (103), a limiting slide groove (105) is provided on the forklift connecting plate (101), and the supporting slider (104) is slidably connected to the limiting slide groove (105).

7. The forklift fork assembly according to claim 1, characterized in that The counterweight device (4) includes: a placement box (41), a limiting screw (42), a counterweight block (43) and a conical nut (44); wherein the placement box (41) is connected to the second tooth plate (24), the limiting screw (42) is fixedly arranged inside the placement box (41), the counterweight block (43) is arranged inside the placement box (41), and the counterweight block (43) is slidably connected to the limiting screw (42), and the limiting screw (42) is threadedly connected to the conical nut (44).

8. The forklift fork assembly according to claim 7, characterized in that The counterweight block (43) is provided with a plurality of slots (6) at the bottom, and a plurality of handles (7) are provided at the top. The plurality of slots (6) correspond to the plurality of handles (7) one by one, and the handle (7) on one counterweight block (43) is snapped into the slot (6) on another counterweight block (43).

9. The forklift fork assembly according to claim 1, characterized in that , further comprising: a first support plate (8) and a second support plate (9); The first support plate (8) and the first tooth plate (23) are symmetrically arranged with the central axis of the first gear (223) as the symmetry axis, the first support plate (8) is slidably connected to the installation frame (21), the first support plate (8) and the first tooth plate (23) are both provided with a first T-shaped slide groove (10) at the lower part, and the lower inner wall of the installation frame (21) is provided with two first T-shaped slide blocks (11), and the two first T-shaped slide blocks (11) are respectively slidably connected to the two first T-shaped slide grooves (10); The second support plate (9) and the second tooth plate (24) are symmetrically arranged with the central axis of the second gear (225) as the symmetry axis, the second support plate (9) is slidably connected to the mounting frame (21), the second support plate (9) and the second tooth plate (24) are both provided with a second T-shaped slide groove (12) on the upper part, and two second T-shaped sliding blocks (13) are provided on the inner wall of the upper part of the mounting frame (21), and the two second T-shaped sliding blocks (13) are slidably connected to the two second T-shaped slide grooves (12) respectively.

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