Continuous adjustable structure of fork arm of carrier
By utilizing the sliding fit of the guide sleeve and guide post, combined with locking bolts and a reinforced structure, the problem of limited fork arm spacing adjustment range is solved, enabling continuous adjustment of fork arm spacing and improving structural strength, thus expanding the applicability of the cargo handling vehicle.
Patent Information
- Application Number
- CN202520665772.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-04-10
AI Technical Summary
The existing fork arm spacing adjustment range of the cargo handling vehicle is small and cannot adapt to the changes in the spacing of the slots on the bottom of different pallets.
The sliding fit between the guide sleeve and the guide post is used, and the spacing between the fork arms is continuously adjustable by locking bolts. The strength of the guide post and the fork arm is improved by combining support blocks and reinforcing structures.
It enables continuous adjustment of the fork arm spacing, improves the applicability and structural strength of the cargo handling vehicle, and avoids guide post bending and fork arm breakage.
Smart Images
Figure CN223866318U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cargo handling vehicle technology, and more specifically, to a continuously adjustable fork arm structure for a cargo handling vehicle. Background Technology
[0002] A freight pallet is a handling device used to move goods. Currently, the forks installed on freight pallets rely on the engagement of the teeth on the forks and the grooves on the lifting frame to achieve horizontal locking. However, when the type of pallet used to carry goods changes, the spacing of the slots on the bottom of different pallets that engage with the two forks on the pallet needs to be adjusted to meet the spacing between the two slots on the bottom of different pallets. That is, when the forks are adjusted relative to the lifting frame, the teeth on the forks need to engage with the grooves at different positions on the lifting frame. However, since the forks rely on the engagement of the teeth and grooves with the lifting frame for horizontal adjustment, there is a disadvantage that the adjustable range of the spacing between the two forks is small. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a continuously adjustable fork arm structure for a pallet truck. Under the sliding cooperation of the guide sleeve and the guide post, the distance between the two fork arms can be continuously adjusted, so that the distance between the two fork arms can meet the needs of more pallet types with different slot spacing, thereby improving the applicability of the pallet truck.
[0004] This utility model provides a continuously adjustable fork arm structure for a transport vehicle, including a lifting frame and two fork arms symmetrically arranged on the front side of the lifting frame. The lifting frame is vertically and movably connected to the frame of the transport vehicle. Each fork arm includes a vertical section and a horizontal section. The rear end of each horizontal section is welded and fixed to the front side of the lower end of the corresponding vertical section. A guide post is horizontally fixed to the upper end of the front side of the lifting frame. A guide sleeve is welded and fixed to the upper end of each vertical section. Each guide sleeve can be slidably fitted onto the guide post. The rear side of the lower end of each vertical section abuts against the front side of the lower end of the lifting frame and can slide horizontally relative to the lifting frame. A locking structure is provided on each guide sleeve to lock the guide sleeve and the guide post to limit the horizontal movement of the fork arm relative to the lifting frame.
[0005] By adopting the above-mentioned structure, this utility model enables the spacing between the two fork arms to be continuously adjustable under the sliding cooperation of the guide sleeve and the guide post. This allows the spacing between the two fork arms to meet the needs of more pallet types with different slot spacings, thereby improving the applicability of the cargo handling vehicle.
[0006] In one possible implementation, each locking structure includes a locking bolt, the threaded portion of which passes through the side wall of the guide sleeve and is threadedly connected to the guide sleeve. The inner end of the threaded portion of the locking bolt is pressed against the outer wall of the guide post to lock the guide sleeve and the guide post. With this locking structure, when the locking bolt is tightened so that the inner end of the threaded portion of the locking bolt is pressed against the outer wall of the guide post, the locking bolt can lock the guide sleeve and the guide post, thus locking the fork arm and the lifting frame. When the locking bolt is loosened, the threaded portion of the locking bolt is released from the pressing state with the guide post, thus releasing the locking state of the guide sleeve and the guide post, allowing the fork arm to move left and right relative to the lifting frame, thereby adjusting the distance between the two fork arms.
[0007] In one possible implementation, a support block is welded and fixed to the front side of the upper end of the lifting frame. The support block is located in the middle of the guide column in the transverse direction. The support block is provided with a through hole, and the guide column is transversely inserted into the through hole. The outer wall of the guide column is attached to and welded to the wall of the through hole. By adopting this structure, the support block can provide support for the middle of the guide column, thereby effectively preventing the guide column from bending downward when the fork arm lifts the goods and bears the load. This improves the structural strength of the guide column and the reliability of the guide column in supporting the fork arm.
[0008] In one possible implementation, the upper end of the lifting frame is provided with insertion holes on both sides, and the two ends of the guide post are respectively inserted into one of the insertion holes. The outer side wall of the guide post is attached to the hole wall of the insertion hole and welded to fix it. With this structure, both ends of the guide post can be reliably fixed to the lifting frame to avoid the two ends of the guide post from detaching from the lifting frame.
[0009] In one possible implementation, a reinforcing structure is provided at the connection between the vertical and horizontal sections of each fork arm; by adopting this structure, the structural strength of the fork arm can be effectively improved, thereby effectively preventing the vertical and horizontal sections of the fork arm from breaking when the fork arm lifts goods.
[0010] In one possible implementation, each reinforcing structure includes reinforcing frames symmetrically arranged on both sides of the corresponding vertical section. Each reinforcing frame is "L"-shaped, and the vertical side of each reinforcing frame is welded and fixed to the outer wall of the vertical section. The horizontal side of each reinforcing frame extends to the inner side of the rear end of the corresponding horizontal section and is welded and fixed to the rear end of the horizontal section. By adopting this structure, the structural strength between the vertical and horizontal sections can be effectively improved under the action of the reinforcing frames, so as to avoid the breakage between the vertical and horizontal sections. Attached Figure Description
[0011] Figure 1 This is the first three-dimensional structural schematic diagram of the present invention;
[0012] Figure 2 This is a second three-dimensional structural diagram of the present invention. Detailed Implementation
[0013] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.
[0014] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.
[0015] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0016] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0017] See Figure 1-2 As shown in the embodiment of this application, a continuously adjustable fork arm structure for a transport vehicle is disclosed, including a lifting frame 1 and two fork arms 2 symmetrically arranged on the front side of the lifting frame 1. The lifting frame 1 is vertically and movably connected to the frame of the transport vehicle. Each fork arm 2 includes a vertical section 21 and a horizontal section 22. The rear end of each horizontal section 22 is welded and fixed to the front side of the lower end of the corresponding vertical section 21. A guide post 3 is horizontally fixed to the upper end of the front side of the lifting frame 1. A guide sleeve 23 is welded and fixed to the upper end of each vertical section 21. Each guide sleeve 23 can be slidably sleeved on the guide post 3. The rear side of the lower end of each vertical section 21 abuts against the front side of the lower end of the lifting frame 1 and can slide horizontally relative to the lifting frame 1. Each guide sleeve 23 is provided with a locking structure, which is used to lock the guide sleeve 23 and the guide post 3 to limit the horizontal movement of the fork arm 2 relative to the lifting frame 1.
[0018] Each locking structure includes a locking bolt 24, the threaded portion of which passes through the side wall of the guide sleeve 23 and is threadedly connected to the guide sleeve 23. The inner end of the threaded portion of the locking bolt 24 is tightly pressed against the outer wall of the guide post 3 to lock the guide sleeve 23 and the guide post 3. With this locking structure, when the locking bolt is tightened so that the inner end of the threaded portion of the locking bolt is tightly pressed against the outer wall of the guide post, the locking bolt can lock the guide sleeve and the guide post. At this time, the locking of the fork arm and the lifting frame can be achieved. When the locking bolt is loosened, the threaded portion of the locking bolt can be released from the tight state with the guide post. At this time, the locking state of the guide sleeve and the guide post can be released, thereby allowing the fork arm to move left and right relative to the lifting frame, and thus adjusting the distance between the two fork arms.
[0019] A support block 4 is welded and fixed to the front side of the upper end of the lifting frame 1. The support block 4 is located in the middle of the guide column 3 in the transverse direction. A through hole 41 is provided on the support block 4. The guide column 3 is transversely inserted into the through hole 41. The outer wall of the guide column 3 is attached to and welded to the hole wall of the through hole 41. With this structure, the support block can support the middle of the guide column, thereby effectively preventing the guide column from bending downward when the fork arm lifts the goods and bears the load. This improves the structural strength of the guide column and the reliability of the guide column in supporting the fork arm.
[0020] Both sides of the upper end of the lifting frame 1 are provided with insertion holes 11. The two ends of the guide post 3 are respectively inserted into one of the insertion holes 11. The outer side wall of the guide post 3 is attached to the hole wall of the insertion hole 11 and welded to fix it. With this structure, both ends of the guide post can be reliably fixed to the lifting frame to avoid the two ends of the guide post from detaching from the lifting frame.
[0021] Each fork arm 2 has a reinforcing structure at the connection between the vertical section 21 and the horizontal section 22. By adopting this structure, the structural strength of the fork arm can be effectively improved, thereby effectively preventing the vertical and horizontal sections of the fork arm from breaking when the fork arm lifts goods.
[0022] Each reinforcing structure includes reinforcing frames 25 symmetrically arranged on both sides of the corresponding vertical segment 21. Each reinforcing frame 25 is "L"-shaped. The vertical side 251 of each reinforcing frame 25 is welded and fixed to the outer wall of the vertical segment 21, and the horizontal side 252 of each reinforcing frame 25 extends to the inner side of the rear end of the corresponding horizontal segment 22 and is welded and fixed to the rear end of the horizontal segment 22. By adopting this structure, the structural strength between the vertical segment and the horizontal segment can be effectively improved under the action of the reinforcing frames, so as to avoid the breakage between the vertical segment and the horizontal segment.
[0023] When using this invention, if it is necessary to adjust the distance between the two fork arms to meet the distance between the slots at the bottom of the pallet, first loosen the locking bolts used to fasten the guide sleeve and guide post. Then, move each fork arm left and right to adjust the distance between the two fork arms. After the distance between the two fork arms is adjusted to meet the distance between the two slots at the bottom of the pallet, tighten the locking bolts again to lock the guide sleeve and guide post.
[0024] The above description is merely a specific embodiment of this application, but the scope of protection of this application 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 application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A continuously adjustable fork arm structure for a transport vehicle, comprising a lifting frame (1) and two fork arms (2) symmetrically arranged on the front side of the lifting frame (1); the lifting frame (1) is vertically movably connected to the frame of the transport vehicle, each fork arm (2) comprising a vertical section (21) and a horizontal section (22), the rear end of each horizontal section (22) being welded and fixed to the front side of the lower end of the corresponding vertical section (21); characterized in that: The upper front end of the lifting frame (1) is horizontally fixed with a guide post (3). Each vertical section (21) is welded and fixed with a guide sleeve (23) at its upper end. Each guide sleeve (23) can be slidably fitted onto the guide post (3) from left to right. The rear side of the lower end of each vertical section (21) abuts against the front side of the lower end of the lifting frame (1) and can slide horizontally relative to the lifting frame (1). Each guide sleeve (23) is provided with a locking structure. The locking structure is used to lock the guide sleeve (23) and the guide post (3) to limit the horizontal movement of the fork arm (2) relative to the lifting frame (1).
2. The continuously adjustable fork arm structure of the pallet truck according to claim 1, characterized in that: Each of the locking structures includes a locking bolt (24), the threaded portion of each locking bolt (24) passes through the side wall of the guide sleeve (23) and is threadedly connected to the guide sleeve (23), and the inner end of the threaded portion of the locking bolt (24) is tightly abutted against the outer wall of the guide post (3) to lock the guide sleeve (23) and the guide post (3).
3. The continuously adjustable fork arm structure of the pallet truck according to claim 1 or 2, characterized in that: A support block (4) is welded and fixed to the front side of the upper end of the lifting frame (1). The support block (4) is located in the middle of the guide column (3) in the transverse direction. A through hole (41) is provided on the support block (4). The guide column (3) is transversely inserted into the through hole (41). The outer wall of the guide column (3) is attached to the hole wall of the through hole (41) and welded and fixed.
4. The continuously adjustable fork arm structure of the pallet truck according to claim 3, characterized in that: Both sides of the upper end of the lifting frame (1) are provided with insertion holes (11). The two ends of the guide post (3) are respectively inserted into one of the insertion holes (11). The outer side wall of the guide post (3) is attached to the hole wall of the insertion hole (11) and welded and fixed.
5. The continuously adjustable fork arm structure of the pallet truck according to claim 1, 2, or 4, characterized in that: A reinforcing structure is provided at the connection between the vertical section (21) and the horizontal section (22) of each of the forks (2).
6. The continuously adjustable fork arm structure of the pallet truck according to claim 5, characterized in that: Each of the reinforcing structures includes reinforcing frames (25) symmetrically arranged on both sides of the corresponding vertical section (21). Each reinforcing frame (25) is "L" shaped. The vertical side (251) of each reinforcing frame (25) is welded and fixed to the outer wall of the vertical section (21). The horizontal side (252) of each reinforcing frame (25) extends to the inner side of the rear end of the corresponding horizontal section (22) and is welded and fixed to the rear end of the horizontal section (22).