Forklift arm limiting mechanism
By designing a forklift arm limiting mechanism, the problem of unstable forklift arm fixation is solved by utilizing hydraulic devices and the rotation of the limiting arm, thus achieving stable lifting and safe transportation of multi-layered goods.
Patent Information
- Application Number
- CN202521580175.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-28
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-07-28
AI Technical Summary
When a forklift arm is not securely fixed when lifting multi-layered goods, the goods may slide, tilt, or fall, especially when retrieving goods from high shelves, which can easily lead to damage to the goods and safety hazards.
A forklift arm limiting mechanism was designed. A hydraulic device controls the rotating rod to drive the limiting arm to rotate, thereby limiting the cargo laterally. The limiting components and limiting blocks prevent the cargo from sliding and tipping over in different states.
It improves the stability of the forklift arm when lifting multi-layered goods, prevents goods from slipping sideways, ensures transportation safety, and avoids damage to goods and personal injury.
Smart Images
Figure CN224677740U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of forklift arm technology, specifically relating to a forklift arm limiting mechanism. Background Technology
[0002] Forklifts are handling vehicles used for loading, unloading, stacking, and short-distance transportation of goods. During operation, the forklift arm is used to lift goods. The forklift arm consists of a mast and forks. The forks are slidably connected to the mast. When picking up goods, the forks lift the goods. Sometimes, to prevent the goods from falling, one side of the goods is placed against the mast. However, only the forks and mast are in contact with the goods. The forklift arm is not securely fixed to the goods. When picking up multiple layers of goods stacked together, slippage can easily occur between the layers. During transportation, even a slight tilt can cause multiple layers of goods to slip and tip over. Especially when picking up goods from high shelves, the slippage of goods can not only damage the goods but also injure workers.
[0003] Therefore, in order to address the aforementioned technical problems, it is necessary to provide a forklift arm limiting mechanism.
[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content
[0005] The purpose of this utility model is to provide a forklift arm limiting mechanism that can solve the problems mentioned in the background art.
[0006] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:
[0007] A forklift arm limiting mechanism is disclosed, wherein the forklift arm includes a mast and a pair of forks, both of which are slidably connected to the mast. Each opposite end face of the mast has a first shaft hole, and a rotating rod is rotatably connected within the hole wall of each first shaft hole. A pair of first limiting arms are fixedly connected to the rotating rod, and the pair of first limiting arms are respectively located on both sides of the mast. A fixing block is fixedly connected to the rotating rod, and a first rotating shaft is rotatably connected to the fixing block. A hydraulic device is fixedly connected to one end face of the mast, the hydraulic device including a hydraulic rod, a third rotating shaft fixedly connected to the hydraulic rod, and a connecting rod rotatably connected to the third rotating shaft. The connecting rod is rotatably connected to the first rotating shaft.
[0008] In one or more embodiments of this utility model, the opposite end faces of the gantry are fixedly connected with reinforcing sleeves, and the rotating rod is rotatably connected inside the reinforcing sleeves.
[0009] In one or more embodiments of this utility model, a limiting notch ring is fixedly connected to one end face of the reinforcing sleeve, and a pair of second limiting blocks that match the limiting notch ring are fixedly connected to the outer side face of the rotating rod.
[0010] In one or more embodiments of this utility model, a first limiting block that matches the first limiting arm is fixedly connected to one end face of the gantry.
[0011] In one or more embodiments of this utility model, a rotating groove is provided on one side end face of the first limiting arm, a second rotating shaft is rotatably connected to one side end face of the first limiting arm, a second limiting arm is rotatably connected to the second rotating shaft, and the height of the center of the cross-section of the second rotating shaft is greater than the height of the center of gravity of the second limiting arm.
[0012] In one or more embodiments of this utility model, a third limiting block that matches the second limiting arm is fixedly connected to one end face of the first limiting arm, and the height of the third limiting block is less than the center of gravity height of the second limiting arm.
[0013] In one or more embodiments of this utility model, a limiting component matching the second limiting arm is fixedly connected to one end face of the first limiting arm. The limiting component is located below the second rotating shaft, and the limiting component and the third limiting block are respectively located on both sides of the second limiting arm.
[0014] In one or more embodiments of this utility model, the limiting component includes a pair of housings, the housings being fixedly connected to a first limiting arm, a first groove and a second groove being provided on one side end face of the housings, a limiting rod being slidably connected in the groove wall of the first groove, a limiting ring being fixedly connected to the outer wall of the limiting rod, a spring being slidably connected in the side wall of the second groove, the spring abutting against one side end face of the limiting ring, and a hemispherical head being integrally formed on the side end face of the limiting rod that abuts against the gantry.
[0015] In one or more embodiments of this utility model, a first slot is provided on the opposite end face of the rotating rod, and a second slot matching the first slot is provided on one side end face of the first limiting arm, and a locking block is engaged in the groove wall of the second slot.
[0016] In one or more embodiments of this utility model, a third threaded hole is provided on one side end face of the card block, a second threaded hole matching the third threaded hole is provided on one side end face of the first limiting arm, a first threaded hole matching the third threaded hole is provided on the upper part of the rotating rod, and an internal hexagon bolt is internally threaded into the third threaded hole.
[0017] Compared with the prior art, the forklift arm limiting mechanism of this utility model can limit the goods from the side, preventing the goods from slipping off the side of the forklift arm when picking up and transporting goods. It is more stable when picking up multiple layers of goods and avoids the goods falling off and hitting the operators. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a diagram showing the usage state of a forklift arm limiting mechanism according to one embodiment of the present invention;
[0020] Figure 2 This is a perspective view of a forklift arm limiting mechanism according to an embodiment of the present invention;
[0021] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle;
[0022] Figure 4 for Figure 2 Enlarged view of the structure at point B in the middle;
[0023] Figure 5 This is an exploded view of a forklift arm limiting mechanism according to one embodiment of the present invention;
[0024] Figure 6 for Figure 5 Enlarged view of the structure at point C;
[0025] Figure 7 This is an exploded view of the limit component.
[0026] Explanation of key figure labels:
[0027] 1. Mast; 101. First shaft hole; 102. Reinforcing sleeve; 103. First limiting block; 104. Limiting notch ring; 2. Forks; 3. Rotating rod; 301. Fixing block; 302. First rotating shaft; 303. Connecting rod; 304. Second limiting block; 305. First slot; 306. First threaded hole; 4. First limiting arm; 401. Second shaft hole; 402. Second slot; 403. Locking block; 4 04. Second threaded hole; 405. Third threaded hole; 406. Socket headstock bolt; 407. Rotating groove; 408. Second rotating shaft; 409. Third limiting block; 5. Hydraulic device; 501. Hydraulic rod; 502. Third rotating shaft; 6. Second limiting arm; 7. Limiting assembly; 701. Housing; 702. First groove; 703. Second groove; 704. Limiting rod; 705. Limiting ring; 706. Spring. Detailed Implementation
[0028] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.
[0029] like Figure 1 , Figure 5 and Figure 6 As shown in the figure, a forklift arm limiting mechanism is provided in one embodiment of the present invention. The forklift arm includes a mast 1 and a pair of forks 2. The pair of forks 2 are slidably connected to the mast 1. When picking up goods, the forks 2 lift the goods from the bottom surface, and the mast 1 abuts against the goods to prevent the goods from falling towards the cab. The opposite end faces of the mast 1 are provided with first shaft holes 101. A rotating rod 3 is rotatably connected to the hole wall of the first shaft hole 101. A pair of first limiting arms 4 are fixedly installed on the rotating rod 3. The pair of first limiting arms 4 are respectively located on both sides of the mast 1. When the rotating rod 3 rotates, it can drive the first limiting arms 4 to rotate synchronously. When the first limiting arms 4 rotate from the vertical state to the horizontal state, the first limiting arms 4 are located on both sides of the goods, which can restrict the tilting and sliding of the goods from both sides.
[0030] like Figure 2 and Figure 3As shown, a pair of fixed blocks 301 are welded to the rotating rod 3. A first rotating shaft 302 is rotatably connected to the fixed blocks 301. A hydraulic device 5 is welded to one end face of the gantry 1. The hydraulic device 5 includes a hydraulic rod 501. A third rotating shaft 502 is welded to the hydraulic rod 501. A connecting rod 303 is rotatably connected to the third rotating shaft 502. The connecting rod 303 is rotatably connected to the first rotating shaft 302. When the hydraulic rod 501 retracts, it pulls the connecting rod 303, which pulls the fixed blocks 301 to rotate, thereby driving the rotating rod 3 to rotate. This, in turn, drives the first limiting arm 4 to rotate from a vertical state to a horizontal state. Similarly, when the hydraulic rod 501 extends, it can drive the first limiting arm 4 to rotate from a horizontal state to a vertical state. The rotation of the first limiting arm 4 is achieved through the retraction and extension of the hydraulic rod 501.
[0031] like Figure 4 As shown, reinforcing sleeves 102 are welded to the opposite end faces of the gantry 1. The rotating rod 3 is rotatably connected inside the reinforcing sleeves 102, and the reinforcing sleeves 102 can enhance the stability of the rotating rod 3 when it rotates.
[0032] A limiting notch ring 104 is welded to one end face of the reinforcing sleeve 102. A pair of second limiting blocks 304 that match the limiting notch ring 104 are welded to the outer side of the rotating rod 3. The second limiting blocks 304 rotate within the notch of the limiting notch ring 104, thereby limiting the rotation range of the rotating rod 3, so that the first limiting arm 4 can only rotate from the vertical position to the horizontal position and then rotate back to the vertical position.
[0033] A first limiting block 103, matching the first limiting arm 4, is welded to one end face of the gantry 1. The height of the first limiting block 103 is greater than the height of the rotating rod 3, and the distance from the bottom surface of the first limiting block 103 to the center of the cross-section of the rotating rod 3 is equal to half the width of the first limiting arm 4. When the first limiting arm 4 is in a vertical position, the part above the rotating rod 3 is called the upper part, and the part below the rotating rod 3 is called the lower part. When the first limiting arm 4 rotates from a horizontal position to a vertical position, one end face of the upper part abuts against the first limiting block 103, thereby preventing the first limiting arm 4 from continuing to rotate; when the first limiting arm 4 rotates from a vertical position to a horizontal position, one end face of the lower part abuts against the first limiting block 103, preventing the first limiting arm 4 from continuing to rotate.
[0034] A rotating groove 407 is provided on one end face of the first limiting arm 4. A second rotating shaft 408 is rotatably connected to one end face of the first limiting arm 4. A second limiting arm 6 is rotatably connected to the second rotating shaft 408. The height of the center of the cross-section of the second rotating shaft 408 is greater than the height of the center of gravity of the second limiting arm 6. When the first limiting arm 4 is in a vertical state, the second limiting arm 6 is also in a vertical state. At this time, the second limiting arm 6 is housed in the groove wall of the rotating groove 407 and does not affect the loading and unloading of goods. When the first limiting arm 4 is rotated to a horizontal state, since the center of gravity of the second limiting arm 6 is below the center of the cross-section of the second rotating shaft 408, the second limiting arm 6 still remains in a vertical state under the action of gravity. At this time, the second limiting arm 6 is perpendicular to the first limiting arm 4, thereby forming a protective surface on each side of the goods to prevent the goods from tipping over or slipping.
[0035] A third limiting block 409 matching the second limiting arm 6 is welded to one end face of the first limiting arm 4. The height of the third limiting block 409 is less than the center of gravity height of the second limiting arm 6. When the first limiting arm 4 returns to the vertical state, one end face of the second limiting arm 6 abuts against the third limiting block 409, thereby preventing the second limiting arm 6 from swaying at will. At the same time, when the first limiting arm 4 rotates to the horizontal state, the third limiting block 409 will not affect the rotation of the second limiting arm 6.
[0036] A limiting component 7 matching the second limiting arm 6 is welded to one end face of the first limiting arm 4. The limiting component 7 is located below the second rotating shaft 408. The limiting component 7 and the third limiting block 409 are located on both sides of the second limiting arm 6, thereby limiting the second limiting arm 6 in two directions and preventing the second limiting arm 6 from shaking when the first limiting arm 4 is in a vertical state.
[0037] like Figure 7As shown, the limiting assembly 7 includes a pair of housings 701, which are snapped together and welded to the first limiting arm 4. A first groove 702 and a second groove 703 are formed on one side end face of the housing 701. A limiting rod 704 is slidably connected within the groove wall of the first groove 702. A limiting ring 705 is welded to the outer wall of the limiting rod 704. The limiting ring 705 slides within the groove wall of the second groove 703. A spring 706 is slidably connected within the side wall of the second groove 703. The spring 706 abuts against one side end face of the limiting ring 705 and applies a pushing force to the limiting ring 705. A hemispherical head is integrally formed on the side end face of the limiting rod 704 that abuts against the gantry 1, and the hemispherical head protrudes from one side end face of the housing 701. During the process of the first limiting arm 4 returning from the horizontal to the vertical position, the hemispherical head contacts one side of the gantry 1. Since the head can smoothly transition, it does not affect the rotation of the first limiting arm 4. The first limiting arm 4 continues to rotate, and one side of the gantry 1 presses against the hemispherical head, causing the hemispherical head to retract into the housing 701. Meanwhile, the other side of the limiting rod 704 protrudes from the housing 701. At this time, the protruding part of the limiting rod 704 can prevent the second limiting arm 6 from rotating. When the first limiting arm 4 rotates from the vertical position to the horizontal position, the hemispherical head of the limiting rod 704 no longer abuts against the gantry 1. Under the action of the spring 706, the hemispherical head protrudes again from one side of the housing 701, while the other side of the limiting rod 704 retracts into the housing 701, thus not affecting the rotation of the second limiting arm 6.
[0038] like Figure 6 As shown, a second shaft hole 401 is provided on one end face of the first limiting arm 4. The rotating rod 3 passes through the second shaft hole 401, thereby fitting the first limiting arm 4 onto the rotating rod 3. A first slot 305 is provided on the opposite end face of the rotating rod 3. A second slot 402 matching the first slot 305 is provided on one end face of the first limiting arm 4. A locking block 403 is engaged in the groove wall of the second slot 402. The locking block 403 is engaged in the groove wall of the first slot 305 and the second slot 402, which enables the rotating rod 3 and the first limiting arm 4 to rotate synchronously.
[0039] A third threaded hole 405 is provided on one end face of the locking block 403, and a second threaded hole 404 matching the third threaded hole 405 is provided on one end face of the first limiting arm 4. A first threaded hole 306 matching the third threaded hole 405 is provided on the upper part of the rotating rod 3. An internal hexagon bolt 406 is internally threaded into the third threaded hole 405. The internal hexagon bolt 406 is threaded into the second threaded hole 404 and the first threaded hole 306, which can fix the locking block 403 and facilitate the disassembly of the first limiting arm 4. At the same time, the internal hexagon bolt 406 does not protrude from the end face of the first limiting arm 4. When rotating, the third threaded hole 405 will not touch the first limiting block 103 and will not affect the rotation of the first limiting arm 4.
[0040] When using, such as Figure 1 As shown, the hydraulic rod 501 retracts, pulling the connecting rod 303 to rotate, which in turn rotates the fixed block 301, causing the rotating rod 3 to rotate. This, in turn, rotates the first limiting arm 4, causing it to rotate from a vertical position to a horizontal position. The pair of first limiting arms 4 are located on both sides of the cargo, thus restricting the cargo from tipping over to the sides. At this time, the limiting rod 704 no longer abuts against one end face of the gantry 1. Under the action of the spring 706, the hemispherical head of the limiting rod 704 protrudes out of the housing 701 again, while the other end of the limiting rod 704 retracts into the groove wall of the first groove 702. The limiting rod 704 no longer restricts the rotation of the second limiting arm 6. The second limiting arm 6 rotates under the action of gravity, thus maintaining a vertical state. At this time, the first limiting arm 4 and the second limiting arm 6 are perpendicular to each other, forming a limiting surface that restricts the lateral movement of the cargo from both sides, thereby preventing the cargo from tipping over or slipping.
[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A forklift arm limiting mechanism, wherein the forklift arm includes a mast and a pair of forks, wherein the pair of forks are slidably connected to the mast, characterized in that, Each of the opposite end faces of the gantry has a first shaft hole. A rotating rod is rotatably connected to the wall of the first shaft hole. A pair of first limiting arms are fixedly connected to the rotating rod. The pair of first limiting arms are located on both sides of the gantry. A fixing block is fixedly connected to the rotating rod. A first rotating shaft is rotatably connected to the fixing block. A hydraulic device is fixedly connected to one end face of the gantry. The hydraulic device includes a hydraulic rod. A third rotating shaft is fixedly connected to the hydraulic rod. A connecting rod is rotatably connected to the third rotating shaft. The connecting rod is rotatably connected to the first rotating shaft.
2. The forklift arm limiting mechanism according to claim 1, characterized in that, The opposite end faces of the gantry are fixedly connected with reinforcing sleeves, and the rotating rod is rotatably connected inside the reinforcing sleeves.
3. The forklift arm limiting mechanism according to claim 2, characterized in that, A limiting notch ring is fixedly connected to one end face of the reinforcing sleeve, and a pair of second limiting blocks that match the limiting notch ring are fixedly connected to the outer side face of the rotating rod.
4. A forklift arm limiting mechanism according to claim 3, characterized in that, A first limiting block that matches the first limiting arm is fixedly connected to one end face of the gantry.
5. A forklift arm limiting mechanism according to claim 1, characterized in that, A rotating groove is provided on one end face of the first limiting arm, and a second rotating shaft is rotatably connected to one end face of the first limiting arm. A second limiting arm is rotatably connected to the second rotating shaft, and the height of the center of the cross-section of the second rotating shaft is greater than the height of the center of gravity of the second limiting arm.
6. A forklift arm limiting mechanism according to claim 5, characterized in that, A third limiting block that matches the second limiting arm is fixedly connected to one end face of the first limiting arm. The height of the third limiting block is less than the center of gravity height of the second limiting arm.
7. A forklift arm limiting mechanism according to claim 6, characterized in that, A limiting component matching the second limiting arm is fixedly connected to one end face of the first limiting arm. The limiting component is located below the second rotating shaft. The limiting component and the third limiting block are located on both sides of the second limiting arm, respectively.
8. A forklift arm limiting mechanism according to claim 7, characterized in that, The limiting assembly includes a pair of housings, which are fixedly connected to a first limiting arm. A first groove and a second groove are formed on one side end face of the housing. A limiting rod is slidably connected in the groove wall of the first groove. A limiting ring is fixedly connected to the outer wall of the limiting rod. A spring is slidably connected in the side wall of the second groove. The spring abuts against one side end face of the limiting ring. A hemispherical head is integrally formed on the side end face of the limiting rod that abuts against the gantry.
9. A forklift arm limiting mechanism according to claim 1, characterized in that, The rotating rod has a first slot on each of its opposite end faces, and the first limiting arm has a second slot on one side end face that matches the first slot. A locking block is engaged in the groove wall of the second slot.
10. A forklift arm limiting mechanism according to claim 9, characterized in that, The card block has a third threaded hole on one side end face, the first limiting arm has a second threaded hole on one side end face that matches the third threaded hole, the rotating rod has a first threaded hole that matches the third threaded hole, and the third threaded hole is internally threaded with an internal hex bolt.