Electric forklift with rotating function

Abstract

The invention relates to the technical field of electric forklifts, in particular to an electric forklift with a rotating function, which comprises a forklift body and a liftable moving frame, and is characterized in that a rotating fluted disc is rotatably mounted on the moving frame, the rotating fluted disc is fixedly connected with a fork frame through a fixing column, and a locking assembly is arranged on the outer ring of the rotating fluted disc; the locking assembly comprises a fixing plate, a sliding block, a clamping block and a connecting block, the sliding block, the clamping block and the connecting block are slidably connected with the fixing plate, and the transmission assembly is driven by a small air cylinder and comprises a driving rod, a first connecting rod, a second connecting rod and a third connecting rod which are slidably installed on the movable frame and fixed to the sliding block. Flexible rotation adjustment of the fork frame is achieved through the rotating fluted disc and the locking assembly, the rotating fluted disc is locked through the locking assembly, accidental rotation or clamping stagnation of a transmission system is avoided, and stability and safety are improved. The design of the transmission assembly and the limiting block optimizes the limiting and resetting functions, and the transmission efficiency and reliability are improved. The anti-skid blocks are matched with the sliding rails to reduce abrasion of transmission parts and prolong the service life of equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of electric forklifts, and more specifically to an electric forklift with a rotating function. Background Art

[0002] An electric forklift is a loading and unloading and transportation device powered by electric energy. Its working principle is to convert chemical energy into electric energy through a storage battery to drive a motor or other electrical components to complete operations. Electric forklifts have the characteristics of balanced lifting, flexible rotation, and convenient operation, and are widely used in the loading and unloading and short-distance transportation of items in workshops, warehouses, freight yards and other places. Since it does not use fuel, electric forklifts are particularly suitable for indoor working environments with high environmental protection requirements or sensitive to air environment. In addition, electric forklifts also have a high lifting capacity and can meet the loading and unloading needs of goods with different heights and weights, so they are widely used in the modern production field. In the prior art, some electric forklifts are designed with a rotating function to meet the rotating loading and unloading needs of goods in specific scenarios. Such electric forklifts usually drive a transmission mechanism through a motor to drive the fork frame to rotate, so as to realize the rotation adjustment of the goods. Common transmission methods include gear transmission, etc. These transmission mechanisms can provide a certain reduction ratio and rotation accuracy, and are suitable for low-speed and high-precision rotation operations. However, when the electric forklift carries heavy goods, the weight of the fork frame and the goods may cause overload pressure on the transmission system. Especially during the rotation process, the combined action torque of gravity and inertia force may cause the transmission mechanism to rotate unexpectedly or jam, thereby damaging transmission components such as motors and gears, and affecting the service life of the equipment. More seriously, after the rotation is completed, the combined action torque of gravity and inertia force may still act on the transmission system, resulting in out-of-control rotation angle of the fork frame, further aggravating the wear and safety hazards of the transmission system. Summary of the Invention

[0001] The purpose of the present invention is to provide an electric forklift with a rotating function to solve the problems raised in the above background art.

[0002] To achieve the above purpose, the present invention provides the following technical solution: An electric forklift with a rotating function, comprising: a forklift body and a liftable mobile frame installed on one side of the forklift body. A rotating gear disk is rotatably installed on one side of the mobile frame. The rotating gear disk is fixedly welded to one side of the fork frame through a fixed column. A locking assembly is arranged in a circumferential array on the outer circumferential surface of the rotating gear disk. A transmission assembly is arranged outside the locking assembly. The locking assembly includes a fixing plate fixedly installed on one side of the mobile frame. A slider is slidably installed on one side of the fixing plate. A clamping block is slidably installed on the other side of the fixing plate. A connecting block is arranged between the slider and the clamping block. The two sides of the connecting block are respectively slidably connected to the clamping block and the slider. The connecting block is rotatably installed on the fixing plate;

[0003] The transmission assembly includes a small air cylinder. The output end of the small air cylinder is fixedly connected to one end of a driving rod. The other end of the driving rod is slidably connected to one end of a first connecting rod. The other end of the first connecting rod is slidably connected to one end of a second connecting rod. The other end of the second connecting rod is slidably connected to one end of a third connecting rod. A reset assembly is provided on the other side of the second connecting rod. The driving rod, the first connecting rod, the second connecting rod, and the third connecting rod are all slidably mounted on a moving frame, and the driving rod, the first connecting rod, the second connecting rod, and the third connecting rod are all fixedly connected to a slider.

[0004] Preferably, the rotating gear disc is rotatably connected to the moving frame through a fixed shaft. One side of the outer circumferential surface of the rotating gear disc is engaged with a driving gear. The driving gear is fixedly connected to one end of a connecting shaft. The other end of the connecting shaft penetrates through the moving frame and is fixedly connected to a worm gear.

[0005] Preferably, a worm is engaged with the lower side of the worm gear. One end of the worm is fixedly connected to the output end of a motor. The motor is fixedly connected to the moving frame. The connecting shaft is rotatably sleeved in the moving frame, and both sides of the worm are rotatably sleeved in support seats fixedly installed on the moving frame.

[0006] Preferably, a slide rail is fixedly installed on one side of the surface of a fixed plate. Both the slider and the clamping block are slidably connected to the fixed plate through the slide rail. Grooves are provided on one side of both the clamping block and the slider. The grooves are slidably connected to slide pins. The slide pins are rotatably sleeved in a connecting block.

[0007] Preferably, the connecting block is rotatably connected to the fixed plate through a limit pin. An anti-slip block is fixedly connected to one end of the clamping block close to the rotating gear disc. The slider is fixedly connected to one end of a push rod. The other end of the push rod is fixedly connected to a sleeve plate.

[0008] Preferably, the driving rod, the first connecting rod, the second connecting rod, and the third connecting rod are all fixedly connected to the slider through the connection between the push rod and the sleeve plate. The driving rod, the first connecting rod, the second connecting rod, and the third connecting rod are slidably connected through inclined surfaces provided at their ends.

[0009] Preferably, the driving rod, the first connecting rod, the second connecting rod, and the third connecting rod are all slidably sleeved on one end of a limit block. The other end of the limit block is fixedly connected to the moving frame.

[0010] Preferably, the small air cylinder is fixedly installed on the moving frame. The output end of the small air cylinder is fixedly connected to the driving rod through a connecting plate.

[0011] Preferably, the reset assembly includes a limit plate. The limit plate is fixedly sleeved on the third connecting rod. The limit plate is fixedly connected to one end of a spring. The other end of the spring is fixedly connected to one side of one of the limit blocks sleeved on the third connecting rod.

[0012] The electric forklift with a rotating function includes the above-mentioned.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The present invention realizes flexible rotation adjustment of the fork frame by arranging a rotating gear disc and a locking component in an electric forklift, and locks the rotating gear disc through the locking component after rotation is completed, effectively avoiding accidental rotation or jamming of the transmission system caused by the combined action torque of gravity and inertia force, thereby improving the stability and safety of the forklift rotation function.

[0015] 2. The present invention adopts the design of a transmission component and a limit block, optimizes the limit and reset functions of the transmission system, improves the transmission efficiency and reliability, and at the same time further reduces the wear risk of transmission components through the cooperation of anti-sliding blocks and slide rails, prolonging the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 is a schematic bottom view of the overall structure of the present invention;

[0018] Figure 3 is a schematic top view of the internal structure of the present invention;

[0019] Figure 4 is a schematic side view of the overall structure of the present invention;

[0020] Figure 5 is the internal Figure 4 magnified schematic diagram of the structure at A in the present invention;

[0021] Figure 6 is a schematic diagram of the internal structure of the present invention.

[0022] In the figure: 1, forklift body; 2, moving frame; 3, rotating gear disc; 4, fixed column; 5, fork frame; 6, fixed plate; 7, slider; 8, clamping block; 9, connecting block; 10, small cylinder; 11, driving rod; 12, first connecting rod; 13, second connecting rod; 14, third connecting rod; 15, fixed shaft; 16, driving gear; 17, connecting shaft; 18, worm gear; 19, worm; 20, motor; 21, slide rail; 22, groove; 23, sliding pin; 24, limit pin; 25, anti-sliding block; 26, push-pull rod; 27, sleeve plate; 28, limit block; 29, connecting plate; 30, limit plate; 31, spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to clearly and completely describe the objectives, technical solutions of the present invention, and make the advantages more clearly understood, the following further elaborates on the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some, rather than all, of the embodiments of the present invention, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0024] Embodiment 1: Please refer to Figure 1 - Figure 6 , the present invention provides a technical solution for an electric forklift with a rotation function: The electric forklift with a rotation function includes: a forklift body 1 and a liftable mobile frame 2 installed on one side of the forklift body 1. The forklift body 1 is a prior art and will not be elaborated here. The lifting of the mobile frame 2 can be controlled by the hydraulic system installed in the forklift body 1. A rotating gear disk 3 is rotatably installed on one side of the mobile frame 2. The rotating gear disk 3 is fixedly welded to one side of the fork frame 5 through a fixed column 4. By rotating the rotating gear disk 3, the fork frame 5 is driven to rotate under the connection action of the fixed column 4. A locking assembly is arranged in a circumferential array on the outer circumferential surface of the rotating gear disk 3. The rotating gear disk 3 is locked after rotation through the arranged locking assembly to avoid the combined action torque of gravity and inertia force that may cause accidental rotation of the transmission mechanism. A transmission assembly is arranged outside the locking assembly, and the transmission assembly is used to control the start and stop of the locking assembly. The locking assembly includes a fixed plate 6 fixedly installed on one side of the mobile frame 2. A slider 7 is slidably installed on one side of the fixed plate 6, and a clamping block 8 is slidably installed on the other side of the fixed plate 6. A connecting block 9 is arranged between the slider 7 and the clamping block 8. Both sides of the connecting block 9 are slidably connected to the clamping block 8 and the slider 7 respectively. The connecting block 9 is rotatably installed on the fixed plate 6, and the fixed plate 6 limits the connecting block 9. The transmission assembly includes a small air cylinder 10. The small air cylinder 10 is electrically connected to the control system of the forklift body 1. The output end of the small air cylinder 10 is fixedly connected to one end of a driving rod 11. The other end of the driving rod 11 is slidably connected to one end of a first connecting rod 12. The other end of the first connecting rod 12 is slidably connected to one end of a second connecting rod 13. The other end of the second connecting rod 13 is slidably connected to one end of a third connecting rod 14. A reset assembly is arranged on the other side of the second connecting rod 13. The reset assembly is provided for the reset of the first connecting rod 12, the second connecting rod 13, and the third connecting rod 14, so as to facilitate the transmission among them next time. The driving rod 11, the first connecting rod 12, the second connecting rod 13, and the third connecting rod 14 are all slidably installed on the mobile frame 2, and the driving rod 11, the first connecting rod 12, the second connecting rod 13, and the third connecting rod 14 are all fixedly connected to the slider 7.

[0025] When the angle adjustment of the fork support 5 is required, the rotation of the rotating gear disk 3 is indirectly driven by controlling the control system of the forklift body 1, so as to drive the fork support 5 to rotate under the connection action of the fixed column 4, and then realize the flexible rotation adjustment of the fork support 5, thereby enhancing the practicability of the forklift body 1. After the rotation angle adjustment of the rotating gear disk 3 is completed, it is limited and locked at this time through the cooperation of the locking component and the transmission component. Specifically, the output end of the small air cylinder 10 extends, so that the small air cylinder 10 drives the driving rod 11 to move synchronously, and the driving rod 11 drives the sliding between the first connecting rod 12, the second connecting rod 13 and the third connecting rod 14, so that the driving rod 11, the first connecting rod 12, the second connecting rod 13 and the third connecting rod 14 indirectly drive the slider 7 to move synchronously. The slider 7 is slidably connected to one side of the connecting block 9, so that the other side of the connecting block 9 is slidably connected to the clamping block 8, and the two clamping blocks 8 on the fixed plate 6 move towards each other until the two clamping blocks 8 clamp and limit the rotating gear disk 3, thereby realizing the locking of the rotating gear disk 3, avoiding that after the rotation is completed, the combined acting moment of gravity and inertia force may still act on the transmission system, resulting in the out-of-control rotation angle of the fork support 5, and further aggravating the wear of the transmission system and the problem of potential safety hazards.

[0026] Embodiment 2: On the basis of Embodiment 1, the rotating gear disk 3 is rotatably connected to the moving frame 2 through the fixed shaft 15. The fixed shaft 15 limits the rotating gear disk 3. One side of the outer circumferential surface of the rotating gear disk 3 is engaged with a driving gear 16. The driving gear 16 and the rotating gear disk 3 are in meshing transmission. One end of the connecting shaft 17 is fixedly connected to the driving gear 16, and the other end of the connecting shaft 17 penetrates through the moving frame 2 and is fixedly connected to the worm gear 18. The connecting shaft 17 is used for the transmission between the driving gear 16 and the worm gear 18. The lower side of the worm gear 18 is engaged with a worm 19. The worm 19 and the worm gear 18 are in meshing transmission. One end of the worm 19 is fixedly connected to the output end of the motor 20. The motor 20 is fixedly connected to the moving frame 2. The motor 20 is electrically connected to the control system of the forklift body 1. The connecting shaft 17 is rotatably sleeved in the moving frame 2, and both sides of the worm 19 are rotatably sleeved in the support seats fixedly installed on the moving frame 2. The support seats support and limit the worm 19.

[0027] By controlling the motor 20 to start, the motor 20 drives the worm 19, so that the worm 19 meshes with the worm gear 18. The worm gear 18 drives the driving gear 16 to rotate under the connection action of the connecting shaft 17. The driving gear 16 thus meshes with the rotating gear disk 3, and then realizes the rotation of the rotating gear disk 3.

[0028] Embodiment 3: On the basis of Embodiment 2, a slide rail 21 is fixedly installed on one side of the surface of the fixed plate 6. Both the slider 7 and the clamping block 8 are slidably connected to the fixed plate 6 through the slide rail 21. The slide rail 21 limits the slider 7 and the clamping block 8. Grooves 22 are formed on one side of both the clamping block 8 and the slider 7. The grooves 22 are slidably connected to the sliding pins 23. The sliding pins 23 are rotatably sleeved in the connecting block 9. The grooves 22 limit the sliding pins 23. The connecting block 9 is rotatably connected to the fixed plate 6 through a limit pin 24. The limit pin 24 limits the connecting block 9. One end of the clamping block 8 close to the rotating gear disk 3 is fixedly connected with an anti-sliding block 25. The anti-sliding block 25 is made of a flexible material, so as to avoid abrasion to the rotating gear disk 3 during clamping and limiting. One end of the slider 7 is fixedly connected to one end of a push rod 26. The other end of the push rod 26 is fixedly connected to a sleeve plate 27. Through the connection of the sleeve plate 27, the sleeve plate 27 drives the push rod 26 to move, and the push rod 26 drives the slider 7 to move.

[0029] Embodiment 4: On the basis of Embodiment 3, the driving rod 11, the first connecting rod 12, the second connecting rod 13, and the third connecting rod 14 are all slidably sleeved on one end of a limit block 28. The other end of the limit block 28 is fixedly connected to the moving frame 2. The limit block 28 limits the driving rod 11, the first connecting rod 12, the second connecting rod 13, and the third connecting rod 14, so as to ensure that the movements of the driving rod 11, the first connecting rod 12, the second connecting rod 13, and the third connecting rod 14 are linear movements. The small air cylinder 10 is fixedly installed on the moving frame 2. The output end of the small air cylinder 10 is fixedly connected to the driving rod 11 through a connecting plate 29, so as to facilitate the small air cylinder 10 to drive the driving rod 11 to move through the connection of the connecting plate 29 when the output end extends. The reset assembly includes a limit plate 30. The limit plate 30 is fixedly sleeved on the third connecting rod 14. The limit plate 30 is fixedly connected to one end of a spring 31. The other end of the spring 31 is fixedly connected to one side of one of the limit blocks 28 sleeved on the third connecting rod 14.

[0030] During actual use, when the angle adjustment of the fork support 5 is required, the control system of the forklift body 1 is controlled to start the motor 20. The motor 20 then drives the worm 19 fixedly connected to its output end to rotate. The worm 19 will engage with the worm gear 18, and then the worm gear 18 drives the drive gear 16 to rotate under the connection action of the connecting shaft 17. Through the engagement of the drive gear 16 and the rotating tooth disc 3, the rotating tooth disc 3 is further rotated under the limit of the fixed shaft 15. Finally, the fork support 5 is driven to rotate under the connection action of the fixed column 4, thus realizing the flexible rotation adjustment of the fork support 5, and further enhancing the practicability of the forklift body 1. When the rotation angle adjustment of the rotating tooth disc 3 is completed, it is limited and locked at this time through the cooperation of the locking component and the transmission component. The output end of the small air cylinder 10 is controlled to extend through the control system of the forklift body 1, so that the small air cylinder 10 drives the drive rod 11 to move synchronously through the connection of the connecting plate 29, and the drive rod 11 moves linearly towards the direction close to the drive gear 16. The inclined surface at one end of the drive rod 11 is pressed against the inclined surface at one end of the first connecting rod 12, so that the sliding between the two is caused. Similarly, the first connecting rod 12 drives the sliding between the second connecting rod 13 and the third connecting rod 14. Then, the drive rod 11, the first connecting rod 12, the second connecting rod 13, and the third connecting rod 14 drive the slider 7 to move synchronously through the connection of the sleeve plate 27 and the push-pull rod 26, so that the slider 7 moves away from the clamping block 8. The slider 7 is slidably connected to the sliding pin 23 at one end of the connecting block 9 through the groove 22 opened on it, and the connecting block 9 is slidably connected to the groove 22 opened on the clamping block 8 through the sliding pin 23 at its other end. At the same time, the connecting block 9 rotates under the limit of the limit pin 24, so that the two clamping blocks 8 on the fixed plate 6 move towards each other until the anti-sliding blocks 25 fixedly connected to the two clamping blocks 8 clamp and limit the rotating tooth disc 3. The anti-sliding blocks 25 increase the friction with the rotating tooth disc 3, so as to realize the locking of the rotating tooth disc 3. The small air cylinder 10 stops moving. During this process, the limit plate 30 fixedly sleeved on the third connecting rod 14 presses the spring 31, so that the spring 31 is compressed, avoiding the problem that after rotation is completed, the combined moment of gravity and inertia force may still act on the transmission system, resulting in the out-of-control rotation angle of the fork support 5 and further aggravating the wear of the transmission system and potential safety hazards. When it is necessary to release the locking limit of the rotating tooth disc 3, the small air cylinder 10 is controlled to move in the reverse direction, so that it pulls the drive rod 11 in the reverse direction, and the drive rod 11 no longer limits the first connecting rod 12. Thus, under the reverse elastic force of the spring 31, the spring 31 pushes the limit plate 30 to move in the reverse direction. The limit plate 30 then drives the third connecting rod 14 to move in the reverse direction. Through the inclined surface extrusion and sliding between the third connecting rod 14, the second connecting rod 13, and the first connecting rod 12, the third connecting rod 14, the second connecting rod 13, and the first connecting rod 12 all slide in the reverse direction. Then, the drive rod 11, the third connecting rod 14, the second connecting rod 13, and the first connecting rod 12 indirectly drive the slider 7 to slide in the reverse direction, and finally the reverse sliding of the two clamping blocks 8 is realized, releasing the locking limit of the rotating tooth disc 3 for the next locking.

[0031] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric forklift with a rotating function, comprising a forklift body (1) and a liftable moving frame (2) installed on one side of the forklift body (1), characterized in that: On one side of the moving frame (2), a rotating gear disk (3) is rotatably installed. The rotating gear disk (3) is fixedly welded to one side of the fork frame (5) through a fixed column (4). A locking assembly is arranged in a circumferential array on the outer circumferential surface of the rotating gear disk (3), and a transmission assembly is arranged outside the locking assembly; The locking assembly includes a fixed plate (6) fixedly installed on one side of the moving frame (2). A slider (7) is slidably installed on one side of the fixed plate (6), and a clamping block (8) is slidably installed on the other side of the fixed plate (6). A connecting block (9) is arranged between the slider (7) and the clamping block (8). Both sides of the connecting block (9) are slidably connected to the clamping block (8) and the slider (7) respectively. The connecting block (9) is rotatably installed on the fixed plate (6); The transmission assembly includes a small air cylinder (10). The output end of the small air cylinder (10) is fixedly connected to one end of a driving rod (11). The other end of the driving rod (11) is slidably connected to one end of a first connecting rod (12). The other end of the first connecting rod (12) is slidably connected to one end of a second connecting rod (13). The other end of the second connecting rod (13) is slidably connected to one end of a third connecting rod (14). A reset assembly is arranged on the other side of the second connecting rod (13). The driving rod (11), the first connecting rod (12), the second connecting rod (13), and the third connecting rod (14) are all slidably installed on the moving frame (2), and the driving rod (11), the first connecting rod (12), the second connecting rod (13), and the third connecting rod (14) are all fixedly connected to the slider (7).

2. The electric forklift with a rotating function according to claim 1, wherein: The rotating gear disk (3) is rotatably connected to the moving frame (2) through a fixed shaft (15). A driving gear (16) is engaged with one side of the outer circumferential surface of the rotating gear disk (3). The driving gear (16) is fixedly connected to one end of a connecting shaft (17). The other end of the connecting shaft (17) penetrates through the moving frame (2) and is fixedly connected to a worm gear (18).

3. The electric forklift with a rotating function according to claim 2, characterized in that: A worm (19) is engaged with the lower side of the worm gear (18). One end of the worm (19) is fixedly connected to the output end of a motor (20). The motor (20) is fixedly connected to the moving frame (2). The connecting shaft (17) is rotatably sleeved in the moving frame (2), and both sides of the worm (19) are rotatably sleeved in support seats fixedly installed on the moving frame (2).

4. The electric forklift with a rotating function according to claim 1, characterized in that: On one side of the surface of the fixed plate (6), a slide rail (21) is fixedly installed. Both the slider (7) and the clamping block (8) are slidably connected to the fixed plate (6) through the slide rail (21). Grooves (22) are formed on one side of the clamping block (8) and the slider (7). The grooves (22) are slidably connected to slide pins (23). The slide pins (23) are rotatably sleeved in the connecting block (9).

5. The electric forklift with a rotating function according to claim 4, characterized in that: The connecting block (9) is rotatably connected to the fixed plate (6) through a limit pin (24). An anti-sliding block (25) is fixedly connected to one end of the clamping block (8) close to the rotating gear disk (3). One end of the slider (7) is fixedly connected to a push-pull rod (26). The other end of the push-pull rod (26) is fixedly connected to a sleeve plate (27).

6. The electric forklift with a rotating function according to claim 1, characterized in that: The driving rod (11), the first connecting rod (12), the second connecting rod (13), and the third connecting rod (14) are all fixedly connected to the slider (7) through the connection between the push-pull rod (26) and the sleeve plate (27). The driving rod (11), the first connecting rod (12), the second connecting rod (13), and the third connecting rod (14) are slidably connected through inclined surfaces formed at their ends.

7. The electric forklift with a rotating function according to claim 6, characterized in that: The driving rod (11), the first connecting rod (12), the second connecting rod (13), and the third connecting rod (14) are all slidably sleeved on one end of the limit block (28), and the other end of the limit block (28) is fixedly connected to the moving frame (2).

8. The electric forklift with a rotating function according to claim 1, characterized in that: The small air cylinder (10) is fixedly installed on the moving frame (2), and the output end of the small air cylinder (10) is fixedly connected to the driving rod (11) through the connecting plate (29).

9. The electric forklift with a rotating function according to claim 7, characterized in that: The reset assembly includes a limit plate (30) fixedly sleeved on the third connecting rod (14). The limit plate (30) is fixedly connected to one end of the spring (31), and the other end of the spring (31) is fixedly connected to one side of one of the limit blocks (28) sleeved on the third connecting rod (14).

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