Rotary hydraulic fork arm carrier
By designing a rotating hydraulic fork carriage and using a rotary cylinder and hydraulic lock to adjust the load posture, the problem of forklifts not being able to load horizontally on uneven terrain was solved, thus improving load stability and operational efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LONGHE INTELLIGENT EQUIP MFG CO LTD
- Filing Date
- 2025-05-12
- Publication Date
- 2026-05-05
AI Technical Summary
Maintaining a forklift load level is difficult on uneven terrain, and existing rotary hydraulic fork carriages are unable to effectively adjust the load posture in uneven terrain.
A rotary hydraulic fork carriage was designed, including a fork carriage body, a slewing assembly, a drive assembly, and a pin. The load tilt adjustment is achieved through a slewing cylinder and a hydraulic lock. Combined with a guide groove and support plate structure, the fork assembly is kept level on uneven terrain.
This technology enables forklifts to maintain a level load on uneven terrain, adapt to uneven landing areas such as slopes, and improves the operational stability and efficiency of forklifts.
Smart Images

Figure CN224199094U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of transportation equipment technology, specifically a rotary hydraulic forklift. Background Technology
[0002] Forklifts are industrial material handling vehicles, referring to various wheeled handling vehicles used for loading, unloading, stacking, and short-distance transport of palletized goods. In addition to the versatility of telescopic forklifts, the development of rotary hydraulic fork carriages is crucial. During actual transport, the forklift needs to be moved to the appropriate position, aligning the forks with the cargo chassis for proper handling. Therefore, maintaining load levels even on uneven terrain is particularly important. Utility Model Content
[0003] This invention provides a rotary hydraulic fork carriage that overcomes the shortcomings described in the background art.
[0004] The technical solution adopted by this utility model to solve its technical problem is:
[0005] A rotary hydraulic fork carriage includes a fork carriage body, a slewing assembly, a drive assembly, a pin, and a fork assembly. The fork assembly is mounted on the fork carriage body via the pin. The slewing assembly is mounted on the back side of the fork carriage body. The fixed end of the drive assembly is hinged to the fork carriage body, and the movable end of the drive assembly is hinged to the slewing assembly.
[0006] In some embodiments, a connection assembly is provided on the slewing component.
[0007] In some embodiments, the drive component is a rotary hydraulic cylinder.
[0008] In some embodiments, a hydraulic lock is provided on the rotary cylinder.
[0009] In some embodiments, the pin is fitted onto the fork carriage body via a positioning shaft.
[0010] In some embodiments, the forklift body includes a main frame, a guide plate, a support plate, and a first guide groove. The first guide groove is provided on the side end of the main frame in a vertical direction. The guide plate and the support plate are welded on the main frame. A second guide groove is provided through the guide plate. The support plate is provided with a support opening.
[0011] In some embodiments, the support plate is divided into a first support plate and a second support plate, and the first support plate and the second support plate are located on both sides of the guide plate.
[0012] In some embodiments, the pin passes sequentially through the main frame, the support plate, and the guide plate.
[0013] In some embodiments, the second guide groove matches the first guide groove, controlling the pin to move upward, so that the fork assembly passes over the support plate and is displaced between the support plate and the guide plate.
[0014] In some embodiments, the fork assembly includes a connecting sleeve and fork bodies, wherein the spacing between adjacent fork bodies is adjusted by sliding along the pin surface via the connecting sleeve.
[0015] By adopting the above technical solution, the beneficial effects of this utility model are:
[0016] The rotary hydraulic fork carriage of this invention is applied to a forklift. The forklift is first moved to a suitable position, the forks are aligned with the cargo chassis and inserted, and the cargo is moved by the forks. The rotary hydraulic fork carriage can maintain a horizontal load even on uneven terrain. The fork carriage is adjusted by controlling the rotation cylinder to tilt the load from one side to the other to adapt to uneven landing areas such as slopes. Attached Figure Description
[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 A schematic diagram of the front structure of a rotating hydraulic fork carriage;
[0020] Figure 3 This is a schematic diagram of the fork assembly.
[0021] Figure 4 This is a structural schematic diagram of the main body of the fork carriage;
[0022] Figure 5 This is a schematic diagram of the rotary assembly.
[0023] Figure 6 This is a schematic diagram of the pin structure.
[0024] Explanation of key figure labels:
[0025] 1. Fork carriage body; 11. Main frame; 12. Guide plate; 13. First support plate; 14. Second support plate; 15. First guide groove; 16. Second guide groove; 17. Support opening; 2. Rotary assembly; 21. Connecting assembly; 3. Drive assembly; 31. Hydraulic lock; 4. Pin; 41. Positioning bushing; 5. Fork assembly; 51. Connecting cylinder; 52. Fork body; 6. Rotary shaft. Detailed Implementation
[0026] like Figures 1-6As shown, this utility model provides a rotary hydraulic fork carriage, including a fork carriage body 1, a slewing component 2, a drive component 3, a pin 4, and a fork assembly 5. The fork assembly 5 is mounted on the fork carriage body 1 via the pin 4. The slewing component 2 is mounted on the back side of the fork carriage body 1. The fixed end of the drive component 3 is hinged to the fork carriage body 1, and the movable end of the drive component 3 is hinged to the slewing component 2.
[0027] According to some embodiments of the present invention, optionally, a connecting assembly 21 is provided on the slewing component 2, and the connecting assembly 21 is a structure for connecting with a forklift.
[0028] According to some embodiments of the present invention, the drive component 3 may optionally be a rotary hydraulic cylinder.
[0029] According to some embodiments of this utility model, optionally, a hydraulic lock 31 is provided on the rotary cylinder. The main function of the hydraulic lock 31 on the cylinder is to lock the circuit and prevent the flow of oil in the circuit, thereby ensuring that the cylinder can maintain its position when subjected to a certain external load; protecting the safety of the cylinder stroke and preventing excessive swinging.
[0030] According to some embodiments of the present invention, the pin 4 is optionally mounted on the fork carriage body 1 via the positioning bushing 41.
[0031] According to some embodiments of the present invention, optionally, the forklift body 1 includes a main frame 11, a guide plate 12, a support plate, and a first guide groove 15. The first guide groove 15 is provided on the side end of the main frame 11 in the vertical direction. The guide plate 12 and the support plate are welded on the main frame 11. A second guide groove 16 is provided through the guide plate 12. The support plate is provided with a support opening 17.
[0032] According to some embodiments of the present invention, optionally, the support plate is divided into a first support plate 13 and a second support plate 14, and the first support plate 13 and the second support plate 14 are located on both sides of the guide plate 12.
[0033] According to some embodiments of this utility model, optionally, the pin 4 passes through the main frame 11, the support plate, and the guide plate 12 in sequence.
[0034] According to some embodiments of the present invention, optionally, the second guide groove 16 matches the first guide groove 15, and the control pin 4 moves upward, so that the fork assembly 5 passes through the support plate and moves between the support plate and the guide plate 12.
[0035] According to some embodiments of the present invention, optionally, the fork assembly 5 includes a connecting cylinder 51 and fork bodies 52, and the fork bodies 52 can slide along the surface of the pin 4 via the connecting cylinder 51 to adjust the spacing between adjacent fork bodies 52.
[0036] Example 1
[0037] like Figures 1-6 As shown, this embodiment provides a rotary hydraulic fork carriage, including a fork carriage body 1, a slewing assembly 2, a drive assembly 3, a pin 4, and a fork assembly 5. The fork assembly 5 is mounted on the fork carriage body 1 via the pin 4. The slewing assembly 2 is mounted on the back side of the fork carriage body 1. The fixed end of the drive assembly 3 is hinged to the fork carriage body 1, and the movable end of the drive assembly 3 is hinged to the slewing assembly 2.
[0038] A connecting assembly 21 is provided on the slewing assembly 2, and the drive assembly 3 is a slewing cylinder with a hydraulic lock 31. The pin 4 is assembled onto the fork carriage body 1 through a positioning bushing 41. The fork carriage body 1 includes a main frame 11, a guide plate 12, a support plate, and a first guide groove 15. The first guide groove 15 is opened vertically on the side of the main frame 11. The guide plate 12 and the support plate are welded on the main frame 11. A second guide groove 16 is provided through the guide plate 12, and a support opening 17 is provided on the support plate. The support plate is divided into a first support plate 13 and a second support plate 14, and the first support plate 13 and the second support plate 14 are located on both sides of the guide plate 12. The pin 4 passes through the main frame 11, the support plate, and the guide plate 12 in sequence. The second guide groove 16 matches the first guide groove 15, controlling the pin 4 to move upward, so that the fork assembly 5 passes through the support plate and moves between the support plate and the guide plate 12. The fork assembly 5 includes a connecting cylinder 51 and fork bodies 52. The fork bodies 52 slide along the surface of the pin 4 via the connecting cylinder 51 to adjust the spacing between adjacent fork bodies 52. The slewing assembly 2 is hinged to the fork carriage body 1 via a slewing shaft 6, meaning that the fork carriage body 1 uses the slewing shaft 6 as a rotation base point to change the positional state between the fork carriage body 1 and the slewing assembly 2. The first guide groove 15 and the second guide groove 16 are U-shaped slots, and the slewing cylinder is installed on one side.
[0039] The movable end of the rotary cylinder is one end of the hydraulic rod. The fixed end of the rotary cylinder is connected to the fork carriage body 1 by a hinge, and the movable end of the rotary cylinder is connected to the rotary assembly 2 by a hinge. In use, the tilt of the entire fork carriage is adjusted by extending and retracting the hydraulic rod on the rotary cylinder. At this time, the tilt of the fork assembly 5 on the fork carriage body 1 is adjusted synchronously.
[0040] Two fork assemblies 5 can be provided. When it is necessary to adjust the distance between the two fork assemblies 5, the height of the pin 4 can be raised directly or indirectly, so that the pin 4 moves vertically upward along the first guide groove 15 and the second guide groove 16. At this time, the pin 4 does not contact the support port 17 and forms a certain distance. Then, the position of the connecting cylinder 51 is moved from the outer end of the first support plate 13 to between the first support plate 13 and the guide plate 12, or the position of the connecting cylinder 51 is moved from the outer end of the second support plate 14 to between the second support plate 14 and the guide plate 12.
[0041] The above description is only a preferred embodiment of the present utility model, and therefore cannot be used to limit the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the present utility model patent and the contents of the specification should still fall within the scope of the present utility model.
Claims
1. A rotating hydraulic fork carriage, characterized in that, The device includes a fork carriage body, a slewing assembly, a drive assembly, a pin, and a fork assembly. The fork assembly is mounted on the fork carriage body via a pin. The slewing assembly is mounted on the back side of the fork carriage body. The fixed end of the drive assembly is hinged to the fork carriage body, and the movable end of the drive assembly is hinged to the slewing assembly.
2. The rotary hydraulic fork carriage according to claim 1, characterized in that, A connection assembly is provided on the slewing component.
3. The rotary hydraulic fork carriage according to claim 1, characterized in that, The drive component is a rotary hydraulic cylinder.
4. The rotary hydraulic fork carriage according to claim 3, characterized in that, A hydraulic lock is installed on the rotary cylinder.
5. The rotary hydraulic fork carriage according to claim 1, characterized in that, The pin is fitted onto the fork carriage body via a positioning shaft assembly.
6. The rotary hydraulic fork carriage according to claim 1, characterized in that, The forklift body includes a main frame, a guide plate, a support plate, and a first guide groove. The first guide groove is provided on the side end of the main frame in the vertical direction. The guide plate and the support plate are welded on the main frame. A second guide groove is provided through the guide plate. The support plate is provided with a support opening.
7. The rotary hydraulic fork carriage according to claim 6, characterized in that, The support plate is divided into a first support plate and a second support plate, and the first support plate and the second support plate are located on both sides of the guide plate.
8. The rotary hydraulic fork carriage according to claim 7, characterized in that, The pins pass through the main frame, support plate, and guide plate in sequence.
9. The rotary hydraulic fork carriage according to claim 8, characterized in that, The second guide groove matches the first guide groove, controlling the pin to move upward, so that the fork assembly passes through the support plate and moves between the support plate and the guide plate.
10. The rotary hydraulic fork carriage according to claim 1, characterized in that, The fork assembly includes a connecting tube and fork bodies. The spacing between adjacent fork bodies can be adjusted by sliding the connecting tube along the surface of the pin.