Fork truck pallet fork carriage attachment

By designing the limiting components and lifting drive components of the forklift pallet fork attachments, the problems of frequent replacement and poor stability of conventional attachments were solved, enabling stable handling and efficient operation of goods under different working conditions.

CN224930251UActive Publication Date: 2026-11-03TAICANG HUAJIAN METAL PROD CO LTD
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Patent Information

Application Number
CN202522497464.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-11-25
Publication Date
2026-11-03
Estimated Expiration
2035-11-25

AI Technical Summary

Technical Problem

Conventional forklift pallet fork attachments require frequent manual replacement when handling goods of different sizes, which is time-consuming and labor-intensive, and makes it difficult to guarantee the stability and safety of the goods during handling.

Method used

A forklift pallet fork attachment was designed, comprising a limiting component, a lifting drive component, and a guide support component. It utilizes hydraulic cylinders and electromechanical joints to achieve flexible adjustment and stable support of the limiting clamp, and combines a servo motor to drive the transmission screw for precise lifting, ensuring stable limiting of goods under different working conditions.

Benefits of technology

It improves the stability and safety of cargo handling, reduces manual debugging time, and enhances the flexibility and operational efficiency of forklift attachments.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a fork truck tray fork rest accessory, including device frame member and limiting component, the vertical installation of device frame member's front side left end has the lifting drive component, limiting component is connected in the front side of lifting drive component, guiding support component level. This fork truck tray fork rest accessory, through the cooperation and cooperation of device frame member, lifting drive component, guiding support component and limiting component, has realized the limitation to goods, and device frame member is as the basic support of entire accessory, has guaranteed the stability and durability in the long -term use process, and lifting drive component has realized the stable lifting control to fork rest, has guaranteed the accuracy of operation, and has improved work efficiency, and guiding support component has provided the stable guiding effect for the lifting of fork rest, has effectively prevented the deflection and shaking of fork rest in the lifting process, and limiting component then avoids the goods damage or safety accident caused by excessive lifting or shaking through accurate mechanical positioning.
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Description

Technical Field

[0001] This utility model relates to the technical field of forklift pallet fork attachments, specifically a forklift pallet fork attachment. Background Technology

[0002] Forklift pallet fork carriage attachments are specialized devices installed on the fork carriage of a forklift to extend the functionality of the forklift; they are also known as multiple attachments. These attachments, by adding different devices to the forks, enable the forklift to adapt to special working conditions such as paper rolls, chemical raw materials, and slip-on goods.

[0003] Conventional forklift pallet fork attachments often require frequent manual replacement or complex adjustments when handling goods of different sizes. This not only consumes a lot of time and manpower, but also makes it difficult to guarantee the stability and safety of the goods during handling. Utility Model Content

[0004] The purpose of this utility model is to provide a forklift pallet fork attachment to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a forklift pallet fork attachment, comprising a device frame and a limiting component. A lifting drive component is vertically mounted on the front left end of the device frame, and a guide support component is vertically mounted on the front right end of the device frame. The limiting component is horizontally connected to the front of the lifting drive component and the guide support component. The limiting component includes a dual-stage hydraulic cylinder, a first electromechanical joint, a limiting clamp, a supporting hydraulic cylinder, a second electromechanical joint, and a support frame. The output ends of both the left and right ends of the dual-stage hydraulic cylinder are connected to the first electromechanical joint, and the end of the first electromechanical joint away from the dual-stage hydraulic cylinder is connected to the limiting clamp. Furthermore, the left and right ends near the middle of the dual-stage hydraulic cylinder are horizontally connected to the supporting hydraulic cylinder, and the end of the supporting hydraulic cylinder away from the dual-stage hydraulic cylinder is connected to the second electromechanical joint. At the same time, a support frame is horizontally connected between the two sets of supporting hydraulic cylinders.

[0006] Furthermore, the device frame includes a main frame, a support rail, and assembly holes. The support rail and assembly holes are symmetrically and vertically installed on the front surface of the main frame, and assembly holes are symmetrically opened at both the upper and lower ends of the middle part of the main frame.

[0007] Furthermore, the lifting drive assembly includes a first lifting seat, a first support seat, a transmission screw, a first auxiliary support rod, a stabilizer, and a servo motor. The first support seat is installed on the side of the first lifting seat near the limiting component, and the transmission screw is vertically threaded through the middle of the first lifting seat. The first auxiliary support rod is symmetrically and vertically slidably slid through the end of the first lifting seat near the device frame component. The upper and lower ends of the first auxiliary support rod are connected to the stabilizer, and the servo motor is vertically installed on the top of the stabilizer at the upper end of the first auxiliary support rod.

[0008] Furthermore, the bottom power output end of the servo motor is connected to the top of the transmission screw via a coupling. The stabilizer is connected and installed on the front surface of the main frame, and the transmission screw is vertically arranged between the two sets of stabilizers and is parallel to the first auxiliary support rod in the vertical direction. The first lifting seat and the support guide rail are connected to each other using a slotted embedded structure.

[0009] Furthermore, the guide support assembly includes a second lifting seat, a second support seat, a guide rod, a second auxiliary support rod, a first bracket, and a second bracket. The second lifting seat is equipped with a second support seat on the side near the limiting assembly, and the guide rod slides vertically through the middle of the second lifting seat. The second auxiliary support rod slides vertically through the end of the second lifting seat near the device frame component, and the top end of the second auxiliary support rod is connected to the first bracket, while the bottom end of the second auxiliary support rod is connected to the second bracket.

[0010] Furthermore, the second lifting seat and the support guide rail are connected to each other by a slotted embedded structure. The guide rod and the second auxiliary support rod are parallel to each other in the vertical direction, and the guide rod and the second auxiliary support rod are vertically arranged between the first bracket and the second bracket.

[0011] Furthermore, the second electromechanical joint at one end of the support frame supporting the hydraulic cylinder is connected and installed on the top of the first support base and the second support base respectively at the end away from the hydraulic cylinder. The first support base, the second support base and the second electromechanical joint are provided with holes for bolt installation at the four diagonal corners of the connection between them.

[0012] Furthermore, the dual-stage hydraulic cylinder, the supporting hydraulic cylinder, and the supporting frame are connected in a U-shaped structure. The second electromechanical joint is used for the up-and-down swing adjustment of the entire limiting assembly in the horizontal Y-axis direction, and the first electromechanical joint is used for the up-and-down swing adjustment of the limiting clamp in the horizontal X-axis direction.

[0013] This utility model provides a forklift pallet fork attachment, which has the following advantages: 1. This utility model, through the structural design of the limiting component, enables the forklift pallet fork attachment to more accurately and stably limit goods during gripping and handling. In actual operation, a dual-stage hydraulic cylinder drives the first electromechanical joint and the limiting clamp to approach the goods. The limiting clamp can adjust its vertical movement along the horizontal X-axis according to the shape and size of the goods, thus tightly fitting both sides of the goods and effectively preventing slippage during handling. Simultaneously, the supporting hydraulic cylinder is connected to the first and second support seats via a second electromechanical joint. The second electromechanical joint enables the entire limiting component to adjust its vertical movement along the horizontal Y-axis, allowing for precise control based on the goods' shape and size. The position of the limiting component is flexibly adjusted according to the height of the object and the working posture of the forklift to ensure that the limiting clamp is always in the optimal limiting state. Moreover, the dual-stage hydraulic cylinder, the supporting hydraulic cylinder, and the support frame are connected in a "U"-shaped structure. This structure not only enhances the overall strength and stability of the limiting component, but also better disperses and bears the various forces generated by the goods during handling, further ensuring the safety and reliability of goods handling. In addition, the design of this limiting component also fully considers the coordinated work with other components on the device structure. Through cooperation with the lifting drive component and the guide support component, it achieves all-round and precise limiting of goods during forklift operation, which greatly improves the working efficiency and practicality of forklift pallet fork attachments.

[0014] 2. This utility model utilizes a combination of a lifting drive assembly and a guide support assembly. After the servo motor of the lifting drive assembly starts, it drives the transmission screw to rotate vertically along the axis via a coupling. Since the first lifting seat is vertically threaded through the transmission screw, and the first lifting seat and the support guide rail are connected by a slotted embedded structure, the first lifting seat can perform stable and precise lifting movements along the support guide rail in the vertical direction. Simultaneously, the first auxiliary support rod plays a supporting and guiding role during the sliding process of the first lifting seat, ensuring the smoothness of its lifting. Similarly, the second lifting seat of the guide support assembly is connected to the support guide rail using a slotted embedded structure, and a guide rod slides vertically through its middle section, close to the mounting plate. One end of the frame component has a second auxiliary support rod that slides vertically and symmetrically through it. The second auxiliary support rod is fixed by the first bracket and the second bracket. This structure allows the second lifting seat to move stably in the vertical direction. The first and second auxiliary support rods simultaneously enhance the overall structural support strength of the lifting drive assembly and the guide support assembly. The lifting drive assembly and the guide support assembly work together to provide stable and reliable lifting support for the limit assembly, enabling the limit assembly to be accurately adjusted to the appropriate height position according to different operational needs. This allows for better control of the goods and improves the flexibility and efficiency of the entire forklift pallet fork attachment under different working conditions. It also ensures the safety and stability of goods transportation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the axial side view of the main body of a forklift pallet fork attachment according to the present invention; Figure 2 This is a schematic diagram of the structural components of a forklift pallet fork attachment according to the present invention. Figure 3 This is a three-dimensional structural diagram of a lifting drive assembly for a forklift pallet fork attachment according to the present invention. Figure 4 This is a three-dimensional structural diagram of a guide support component for a forklift pallet fork attachment according to the present invention; Figure 5 This is a three-dimensional structural diagram of a limiting component for a forklift pallet fork attachment according to the present invention.

[0016] In the diagram: 1. Device frame components; 101. Main frame; 102. Support rail; 103. Assembly hole; 2. Lifting drive assembly; 201. First lifting seat; 202. First support seat; 203. Transmission screw; 204. First auxiliary support rod; 205. Stabilizer; 206. Servo motor; 3. Guide support assembly; 301. Second lifting seat; 302. Second support seat; 303. Guide rod; 304. Second auxiliary support rod; 305. First bracket; 306. Second bracket; 4. Limiting assembly; 401. Dual-stage hydraulic cylinder; 402. First electromechanical joint; 403. Limiting clamp; 404. Support hydraulic cylinder; 405. Second electromechanical joint; 406. Support frame. Detailed Implementation

[0017] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0018] like Figures 1 to 5As shown, a forklift pallet fork attachment includes a device frame 1 and a limiting component 4. A lifting drive component 2 is vertically mounted on the front left end of the device frame 1, and a guide support component 3 is vertically mounted on the front right end of the device frame 1. The limiting component 4 is horizontally connected to the front of the lifting drive component 2 and the guide support component 3. The limiting component 4 includes a dual-stage hydraulic cylinder 401, a first electromechanical joint 402, a limiting clamp 403, a support hydraulic cylinder 404, a second electromechanical joint 405, and a support frame 406. The output ends of the dual-stage hydraulic cylinder 401 are both connected to... A first electromechanical joint 402 is installed, and a limit clamp 403 is connected to the end of the first electromechanical joint 402 away from the dual-stage hydraulic cylinder 401. Supporting hydraulic cylinders 404 are horizontally connected to both ends of the dual-stage hydraulic cylinder 401 near the middle. A second electromechanical joint 405 is installed at the end of the supporting hydraulic cylinder 404 away from the dual-stage hydraulic cylinder 401. A support frame 406 is horizontally connected between the two sets of supporting hydraulic cylinders 404. The second electromechanical joint 405 at both ends of the support frame 406 supporting the hydraulic cylinders 404 is located at the end of the second electromechanical joint 405 away from the supporting hydraulic cylinder 404. The first support base 202 and the second support base 302 are respectively connected and installed on the top of the second support base 202 and the second support base 302. Holes for bolt installation are provided at the four diagonal points of the connection between the first support base 202, the second support base 302 and the second electromechanical joint 405. The dual-stage hydraulic cylinder 401, the support hydraulic cylinder 404 and the support frame 406 are connected in a U-shaped configuration. The second electromechanical joint 405 is used for vertical swing adjustment of the entire limiting assembly 4 in the horizontal Y-axis direction, and the first electromechanical joint 402 is used for vertical swing adjustment of the limiting clamp 403 in the horizontal X-axis direction. The downward swing adjustment utilizes the driving action of the dual-stage hydraulic cylinder 401, while the first electromechanical joint 402 drives the limiting clamp 403 to swing precisely in the horizontal X-axis direction, allowing the limiting clamp 403 to fit tightly against both sides of the goods. It can be flexibly adjusted according to the actual shape and size of the goods, effectively preventing the goods from slipping during handling. The supporting hydraulic cylinder 404 is connected to the first support base 202 and the second support base 302 through the second electromechanical joint 405. The second electromechanical joint 405 can realize the up-and-down swing adjustment of the entire limiting assembly 4 in the horizontal Y-axis direction.

[0019] like Figures 1 to 5As shown, the device frame 1 includes a main frame 101, a support rail 102, and assembly holes 103. The support rail 102 and assembly holes 103 are symmetrically and vertically mounted on the front surface of the main frame 101. Assembly holes 103 are symmetrically opened at both the upper and lower ends of the middle of the main frame 101. The lifting drive assembly 2 includes a first lifting seat 201, a first support seat 202, a transmission screw 203, a first auxiliary support rod 204, a stabilizer 205, and a servo motor 206. The first support seat 202 is installed on the side of the first lifting seat 201 near the limiting assembly 4. The transmission screw 203 is vertically threaded through the middle of the first lifting seat 201. The end of the first lifting seat 201 near the device frame 1 slides symmetrically and vertically. A first auxiliary support rod 204 is inserted through the main frame 101, and a stabilizing frame 205 is connected to both the upper and lower ends of the first auxiliary support rod 204. A servo motor 206 is vertically mounted on the top of the stabilizing frame 205 at the upper end of the first auxiliary support rod 204. The bottom power output end of the servo motor 206 is connected to the top of the transmission screw 203 via a coupling. The stabilizing frame 205 is connected and installed on the front surface of the main frame 101, and the transmission screw 203 is vertically positioned between the two sets of stabilizing frames 205 and is parallel to the first auxiliary support rod 204 in the vertical direction. The first lifting seat 201 and the support guide rail 102 are connected by a slotted embedded structure. The guide support assembly 3 includes a second lifting seat 301, a second support seat 302, and a guide rod. 303, second auxiliary support rod 304, first bracket 305, and second bracket 306. A second support base 302 is installed on the side of the second lifting seat 301 near the limiting component 4. A guide rod 303 slides vertically through the middle of the second lifting seat 301. A second auxiliary support rod 304 slides symmetrically vertically through one end of the second lifting seat 301 near the device frame component 1. The top end of the second auxiliary support rod 304 is connected to the first bracket 305, and the bottom end is connected to the second bracket 306. The second lifting seat 301 and the support guide rail 102 are connected by a slotted embedded structure. The guide rod 303 and the second auxiliary support rod 304 are parallel to each other in the vertical direction. The guide rod 303 and the second auxiliary support rod 304 are vertically arranged between the first bracket 305 and the second bracket 306. The servo motor 206 of the lifting drive assembly 2 is started, and its power is transmitted to the transmission screw 203 through the coupling, causing the transmission screw 203 to rotate vertically. Since the first lifting seat 201 is vertically threaded through the transmission screw 203 and is connected to the support guide rail 102 with a slotted embedded structure, this design enables the first lifting seat 201 to achieve stable and precise lifting movement in the vertical direction along the support guide rail 102. At the same time, the first auxiliary support rod 204 plays an auxiliary support and guiding role during the sliding of the first lifting seat 201, further ensuring the smoothness of the lifting of the first lifting seat 201.

[0020] In summary, as Figures 1 to 5 As shown, when using this forklift pallet fork attachment, the first step is to securely connect the device frame component 1 to the forklift through the mounting holes 103 on the main frame 101 to ensure that the entire attachment is installed firmly and reliably. Before the forklift performs the cargo grabbing operation, the servo motor 206 of the lifting drive component 2 is started according to the expected height of the cargo. The servo motor 206 drives the transmission screw 203 to rotate vertically through the coupling. Because the first lifting seat 201 is vertically threaded through the transmission screw 203 and is connected to the support guide rail 102 with a slotted embedded structure, the first lifting seat 201 will rise or fall stably in the vertical direction along the support guide rail 102. At the same time, the first auxiliary support rod 204 plays an auxiliary support and guiding role to ensure that the first lifting seat 201 rises and falls smoothly, thereby driving the limit component 4 to adjust to the appropriate height position. When the forklift approaches the goods, the dual-stage hydraulic cylinder 401 starts to work, and its left and right output ends drive the first electromechanical joint 402. The first electromechanical joint 402 drives the limiting clamp 403 to swing up and down in the horizontal X-axis direction, so that the limiting clamp 403 can fit tightly against both sides of the goods. It can be flexibly adjusted according to the actual shape and size of the goods, effectively preventing the goods from slipping during subsequent handling.

[0021] Meanwhile, the supporting hydraulic cylinder 404 is connected to the first support seat 202 and the second support seat 302 through the second electromechanical joint 405. According to the height of the goods and the working posture of the forklift, the second electromechanical joint 405 can realize the up and down swing adjustment of the entire limiting assembly 4 in the horizontal Y-axis direction, ensuring that the limiting clamp 403 is always in the optimal limiting state.

[0022] During cargo handling, the dual-stage hydraulic cylinder 401, the supporting hydraulic cylinder 404, and the support frame 406 are connected in a U-shaped structure. This structure enhances the overall strength and stability of the limiting component 4, better distributing and bearing the various forces generated during cargo handling, further ensuring the safety and reliability of cargo handling. Furthermore, the second lifting seat 301 of the guide support component 3 is connected to the support guide rail 102 using a slotted embedded structure. A guide rod 303 slides vertically through its middle section, and a second auxiliary support rod 304 slides symmetrically vertically through one end near the device frame component 1. The second auxiliary support rod 304 is fixed by the first bracket 305 and the second bracket 306. This structure allows the second lifting seat 301 to move stably in the vertical direction, cooperating with the lifting drive component 2 to provide stable and reliable lifting support for the limiting component 4. This enables the limiting component 4 to accurately adjust to the appropriate height position according to different operational needs, thereby better limiting the cargo and improving the flexibility and operational efficiency of the entire forklift pallet fork attachment under different working conditions.

[0023] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A forklift pallet fork attachment, comprising a device frame component (1) and a limiting component (4), characterized in that: The lifting drive assembly (2) is vertically mounted on the front left side of the device frame (1), and the guide support assembly (3) is vertically mounted on the front right side of the device frame (1). The limiting assembly (4) is horizontally connected to the front side of the lifting drive assembly (2) and the guide support assembly (3). The limiting assembly (4) includes a double-stage hydraulic cylinder (401), a first electromechanical joint (402), a limiting clamp (403), a support hydraulic cylinder (404), a second electromechanical joint (405), and a support frame (406). The double-stage hydraulic cylinder (401) Both the left and right output ends are connected to and installed with a first electromechanical joint (402), and the end of the first electromechanical joint (402) away from the double-stage hydraulic cylinder (401) is connected to and installed with a limit clamp (403). Furthermore, both the left and right ends of the double-stage hydraulic cylinder (401) near the middle are horizontally connected to and installed with a support hydraulic cylinder (404), and the end of the support hydraulic cylinder (404) away from the double-stage hydraulic cylinder (401) is installed with a second electromechanical joint (405). At the same time, a support frame (406) is horizontally connected between the two sets of support hydraulic cylinders (404).

2. A forklift pallet fork attachment according to claim 1, characterized in that, The device frame component (1) includes a main frame (101), a support rail (102) and an assembly hole (103). The support rail (102) and the assembly hole (103) are symmetrically and vertically installed on the front surface of the main frame (101), and the upper and lower ends of the middle part of the main frame (101) are symmetrically provided with assembly holes (103).

3. A forklift pallet fork attachment according to claim 2, characterized in that, The lifting drive assembly (2) includes a first lifting seat (201), a first support seat (202), a transmission screw (203), a first auxiliary support rod (204), a stabilizer (205), and a servo motor (206). The first lifting seat (201) is equipped with a first support seat (202) on the side near the limiting assembly (4), and the transmission screw (203) is vertically threaded through the middle of the first lifting seat (201). The first auxiliary support rod (204) is symmetrically and vertically slidably slid through the end of the first lifting seat (201) near the device frame component (1). The upper and lower ends of the first auxiliary support rod (204) are connected to the stabilizer (205). At the same time, the servo motor (206) is vertically installed on the top of the stabilizer (205) at the upper end of the first auxiliary support rod (204).

4. A forklift pallet fork attachment according to claim 3, characterized in that, The bottom power output end of the servo motor (206) is connected to the top of the transmission screw (203) via a coupling. The stabilizer (205) is connected and installed on the front surface of the main frame (101). The transmission screw (203) is vertically arranged between the two sets of stabilizers (205) and is parallel to the first auxiliary support rod (204) in the vertical direction. The first lifting seat (201) and the support guide rail (102) are connected to each other by a slotted embedded structure.

5. A forklift pallet fork attachment according to claim 3, characterized in that, The guide support assembly (3) includes a second lifting seat (301), a second support seat (302), a guide rod (303), a second auxiliary support rod (304), a first bracket (305) and a second bracket (306). The side of the second lifting seat (301) close to the limit assembly (4) is mounted with the second support seat (302), the middle part of the second lifting seat (301) is vertically slidably penetrated by the guide rod (303), the end of the second lifting seat (301) close to the device frame member (1) is symmetrically and vertically slidably penetrated by the second auxiliary support rod (304), the top end of the second auxiliary support rod (304) is connected with the first bracket (305), and the bottom end of the second auxiliary support rod (304) is connected with the second bracket (306).

6. A forklift pallet fork attachment according to claim 5, characterized in that, The second lifting seat (301) and the support guide rail (102) are connected to each other by a slotted embedded structure. The guide rod (303) and the second auxiliary support rod (304) are parallel to each other in the vertical direction, and the guide rod (303) and the second auxiliary support rod (304) are vertically arranged between the first bracket (305) and the second bracket (306).

7. A forklift pallet fork attachment according to claim 3, characterized in that, The ends of the second electric mechanical joint (405) at one end of the support hydraulic cylinder (404) supported at both ends of the support frame (406) that are away from the support hydraulic cylinder (404) are respectively connected and mounted on the tops of the first support seat (202) and the second support seat (302), and four corners of the joints between the first support seat (202), the second support seat (302) and the second electric mechanical joint (405) are all provided with hole structures for bolt installation.

8. A forklift pallet fork attachment according to claim 7, characterized in that, The two-stage hydraulic cylinder (401), the support hydraulic cylinder (404) and the support frame (406) are combined and connected in a surrounding manner to form a "mouth"-shaped structure. The second electric mechanical joint (405) is used for the up-and-down swing adjustment of the entire limit assembly (4) in the horizontal Y-axis direction, and the first electric mechanical joint (402) is used for the up-and-down swing adjustment of the limit splint (403) in the horizontal X-axis direction.