Distance adjusting mechanism for pallet forks of forklift

Abstract

The utility model discloses a forklift pallet fork distance adjusting mechanism which comprises an upper cross beam, side plates are fixedly connected to the left side and the right side of the upper cross beam, a lower cross beam is fixedly connected to the middles of the bottoms of the two sets of side plates, a supporting plate is fixedly connected to the middles of the upper cross beam and the lower cross beam, and a supporting shaft is inserted into the middles of the upper ends of the two sets of side plates. Locking mechanisms are installed on the left side and the right side of the supporting shaft, the left side and the right side of the supporting shaft are sleeved with pallet forks, and stand column plates are fixedly connected to the left side and the right side of the rear end of the upper cross beam and the left side and the right side of the rear end of the lower cross beam. The oil cylinder support is installed on the side, close to the supporting plate, of the left side plate, the supporting shaft can be detached and replaced conveniently through the locking mechanism after being damaged, the oil cylinder drives the left side fork to move in the opposite direction while pushing the right side fork to move conveniently through the chain transmission mechanism, and the clamping mechanism is used for clamping the left side fork and the right side fork. And the lower cross beam can share the gravity of the supporting shaft, so that the service life of the supporting shaft is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of forklifts, in particular to a forklift fork distance adjusting mechanism. Background Art

[0002] When a forklift transports goods, it needs to cooperate with a pallet. However, there is no unified standard for the manufacture of pallets at present. Therefore, when the fork hole distance of the pallet for storing goods changes, the distance between the forks needs to be adjusted accordingly. In this way, the forklift needs to frequently adjust the distance between the forks when lifting different pallets.

[0003] In a forklift fork distance adjusting mechanism with the publication number of CN218058341 U, a horizontally arranged long shaft is installed at the front end of the fork frame assembly. Two forks are movably sleeved on the long shaft. A chain transmission mechanism is installed between the two forks and the fork frame assembly to make the two forks move in opposite or reverse directions when any one of the forks is pushed by an external force. A distance adjusting oil cylinder for pushing any one of the forks is installed on the fork frame assembly. When the distance adjusting oil cylinder controls the movement of one of the forks under the drive of hydraulic oil, at the same time, the other fork is driven by the chain to perform synchronous movement in the opposite direction, so as to achieve the purpose of controlling two forks with one distance adjusting oil cylinder, realizing synchronous distance adjustment of the forks. At the same time, since one oil circuit and control valve are reduced, the manufacturing cost of the forklift distance adjusting fork is reduced. Due to the reduction of the distance adjusting oil cylinder, the visual space of the distance adjusting fork is improved, and the safety of the forklift during use is improved. However, the above device only uses a support shaft to bear the weight of the goods on the fork. When the goods are too heavy, it is easy to cause damage to the support shaft, thus affecting the service life of the device. Therefore, it is necessary to provide a new forklift fork distance adjusting mechanism to solve the above technical problems. Summary of the Utility Model

[0004] The purpose of the present invention is to provide a forklift fork distance adjusting mechanism to solve the above deficiencies in the prior art.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: a forklift fork distance adjusting mechanism, comprising: an upper cross beam, side plates are fixedly connected to the left and right sides of the upper cross beam, a lower cross beam is fixedly connected to the middle of the bottoms of the two groups of side plates, a support plate is fixedly connected between the upper cross beam and the lower cross beam, a support shaft is inserted into the middle of the upper ends of the two groups of side plates, locking mechanisms are installed on the left and right sides of the support shaft, forks are sleeved on the left and right sides of the support shaft, and column plates are fixedly connected to the left and right sides of the rear ends of the upper cross beam and the lower cross beam;

[0006] Oil cylinder support: An oil cylinder support is installed on the side of the left side plate close to the support plate. An oil cylinder is rotatably connected in the middle of the oil cylinder support. A fixed plate is fixedly connected to the middle of the rear end of the right fork. The right side of the oil cylinder is connected to the fixed plate. A fixed rod is fixedly connected to the bottom of the rear end of the side plate. A chain drive mechanism is installed at the other end of the fixed rod. A clamping mechanism is installed at the bottom of the rear end of the fork. By providing a locking mechanism, it is convenient to disassemble and replace the support shaft after it is damaged. By providing a chain drive mechanism, it is convenient to transmit kinetic energy while the oil cylinder pushes the right fork to move, and at the same time drive the left fork to move in the opposite direction. By providing a clamping mechanism, it is convenient for the lower cross beam to share the gravity of the support shaft, thereby extending the service life of the support shaft.

[0007] As a further description of the above technical solution: The locking mechanism includes a fixed sleeve sleeved on the support shaft. A connecting ring is fixedly connected to the side of the two fixed sleeves close to each other. Fixed bolts are inserted into the upper and lower ends of the connecting ring. Through the fixed sleeve and the connecting ring, it is convenient to limit the left and right of the support shaft during use to ensure the normal load-bearing use of the device. By providing fixed bolts, it is convenient to lock the connecting ring to the side plate. When the support shaft is damaged, the fixed sleeve can be disassembled to replace the support shaft, improving the service life of the device.

[0008] As a further description of the above technical solution: The side plate and the connecting ring are provided with threaded holes adapted to the fixed bolts. The fixed bolts and the side plate and the connecting ring form a rotational connection mechanism. By forming a rotational connection mechanism with the fixed bolts, the side plate and the connecting ring, it is convenient to lock the side plate and the connecting ring through the fixed bolts.

[0009] As a further description of the above technical solution: The clamping mechanism includes a mounting block installed on the fork. The rear end of the mounting block is connected to a mounting plate. A motor is installed in the middle of the upper surface of the mounting plate and the motor penetrates the mounting plate. The power output end of the motor is connected to a bidirectional screw rod, and the bidirectional screw rod is rotatably connected in the middle of the mounting plate. Connecting blocks are sleeved on the upper and lower ends of the bidirectional screw rod. The rear end of the connecting block is fixedly connected to a clamping sleeve. A number of rubber strips are installed on the side of the two clamping sleeves close to each other. By providing a motor, it is convenient to drive the bidirectional screw rod to rotate, so that the clamping sleeves on the connecting blocks clamp the lower cross beam, which is convenient for the lower cross beam to share the gravity of the support shaft, thereby extending the service life of the support shaft. By providing rubber strips, it is convenient to protect the lower cross beam during the clamping process, avoid abrasion on the outer surface of the lower cross beam during the clamping and load-bearing process, and can increase the firmness of clamping the lower cross beam.

[0010] As a further description of the above technical solution: The connecting block is provided with a threaded groove adapted to the bidirectional screw, and the connecting block and the bidirectional screw form a rotational connection mechanism. The mounting plate is provided with a sliding groove adapted to the connecting block. By forming a rotational connection mechanism with the connecting block and the bidirectional screw, it is convenient for the bidirectional gear to drive the connecting block to move when rotating. By providing the mounting plate with a sliding groove adapted to the connecting block, it is ensured that the connecting block can move on the mounting plate.

[0011] As a further description of the above technical solution: The chain drive mechanism includes a sprocket rotatably connected to a fixed rod, a chain sleeved on the outer surface of the sprocket, a chain support fixedly connected to the rear end of the fork, a support rod connecting member installed on one side where the two chains are close to each other, and the support rod connecting member is connected to the chain support. By providing the sprocket and chain, it is convenient to transmit kinetic energy while the oil cylinder pushes the right fork to move, and at the same time drive the left fork to move in the opposite direction. By providing the support rod connecting member and the chain support, it is convenient to connect the chain to the fork.

[0012] As a further description of the above technical solution: The side plate and the support plate are provided with movable insertion holes adapted to the support shaft. By providing the side plate and the support plate with movable insertion holes adapted to the support shaft, it is convenient to disassemble the support shaft.

[0013] The utility model provides a forklift fork distance adjustment mechanism, which has the following beneficial effects:

[0014] 1. By providing a locking mechanism, through the fixed sleeve and the connecting ring, it is convenient to limit the left and right of the support shaft during use to ensure the normal load-bearing use of the device. By providing a fixing bolt, it is convenient to lock the connecting ring to the side plate. When the support shaft is damaged, the fixed sleeve can be disassembled to replace the support shaft, which improves the service life of the device;

[0015] 2. By providing a clamping mechanism, the bidirectional screw is rotated by a motor, and the clamping sleeve on the connecting block clamps the lower cross beam, which is convenient for the lower cross beam to share the gravity of the support shaft, thereby improving the service life of the support shaft. By providing a rubber strip, it is convenient to protect the lower cross beam during clamping to avoid abrasion on the outer surface of the lower cross beam during clamping and load-bearing, and can increase the firmness of clamping with the lower cross beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of a forklift fork distance adjustment mechanism proposed by the present utility model Figure 1 ;

[0017] Figure 2 is a schematic diagram of the overall structure of a forklift fork distance adjustment mechanism proposed by the present utility model Figure 2 ;

[0018] Figure 3 Structural schematic of component disassembly in the present utility model Figure 1 ;

[0019] Figure 4 Structural schematic of component disassembly in the present utility model Figure 2 ;

[0020] Figure 5 Structural schematic diagram of the clamping mechanism in the present utility model.

[0021] Legend description:

[0022] 1. Upper crossbeam; 2. Side plate; 3. Lower crossbeam; 4. Support plate; 5. Support shaft; 6. Locking mechanism; 601. Fixed sleeve; 602. Connecting ring; 603. Fixed bolt; 7. Fork; 8. Oil cylinder support; 9. Oil cylinder; 10. Fixed plate; 11. Fixed rod; 12. Chain drive mechanism; 1201. Sprocket; 1202. Chain; 1203. Chain support; 1204. Support connecting rod; 13. Clamping mechanism; 1301. Mounting block; 1302. Mounting plate; 1303. Motor; 1304. Bidirectional screw; 1305. Connecting block; 1306. Clamping sleeve; 1307. Rubber strip; 14. Column plate. Specific implementation mode

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0024] Embodiment 1, referring to Figure 1 and Figure 2 , the present utility model discloses a forklift fork distance adjustment mechanism, which can solve the problem that the existing device only uses a support shaft to bear the weight of the goods on the fork. When the goods are too heavy, it is easy to cause damage to the support shaft, thereby affecting the service life of the device. It includes an upper crossbeam 1, side plates 2 are fixedly connected to the left and right sides of the upper crossbeam 1, a lower crossbeam 3 is fixedly connected to the middle of the bottoms of the two side plates 2, a support plate 4 is fixedly connected to the middle of the upper crossbeam 1 and the lower crossbeam 3, a support shaft 5 is inserted into the middle of the upper ends of the two side plates 2, locking mechanisms 6 are installed on the left and right sides of the support shaft 5, forks 7 are sleeved on the left and right sides of the support shaft 5, and column plates 14 are fixedly connected to the left and right sides of the rear ends of the upper crossbeam 1 and the lower crossbeam 3;

[0025] The oil cylinder support 8 is installed on the side of the left side plate 2 close to the support plate 4. A oil cylinder 9 is rotatably connected in the middle of the oil cylinder support 8. A fixing plate 10 is fixedly connected to the middle of the rear end of the right fork 7. The right side of the oil cylinder 9 is connected to the fixing plate 10. A fixing rod 11 is fixedly connected to the bottom of the rear end of the side plate 2. A chain drive mechanism 12 is installed at the other end of the fixing rod 11. A clamping mechanism 13 is installed at the bottom of the rear end of the fork 7.

[0026] Working principle: The upper cross beam 1, the side plate 2, the lower cross beam 3 and the support plate 4 form the installation frame of the fork 7 to facilitate load bearing and component installation. The support shaft 5 facilitates the installation of the fork 7 and bears the load of the goods on the fork 7. The locking mechanism 6 facilitates disassembly and replacement after the support shaft 5 is damaged. The oil cylinder support 8 and the fixing plate 10 facilitate the connection between the oil cylinder 9 and the fork 7. The oil cylinder 9 facilitates the distance adjustment of the fork 7. The fixing rod 11 facilitates the installation of the chain drive mechanism 12. The chain drive mechanism 12 facilitates the transmission of kinetic energy while the oil cylinder 9 pushes the right fork 7 to move, and at the same time drives the left fork 7 to move in the opposite direction. The clamping mechanism 13 facilitates the lower cross beam 3 to share the gravity of the support shaft 5, thereby improving the service life of the support shaft 5. The column plate 14 facilitates the connection with the forklift.

[0027] Embodiment 2, referring to Figure 3 、 Figure 4 and Figure 5In this embodiment, the problem that the existing device only uses a support shaft to bear the weight of the goods on the forklift forks is solved. When the goods are too heavy, the support shaft is easily damaged, thus affecting the service life of the device. The forklift fork distance adjustment mechanism further includes a locking mechanism 6. The locking mechanism 6 includes a fixed sleeve 601 sleeved on the support shaft 5. A connecting ring 602 is fixedly connected to one side of the two fixed sleeves 601 close to each other. Fixing bolts 603 are inserted into the upper and lower ends of the connecting ring 602. Threaded holes adapted to the fixing bolts 603 are provided on the side plates 2 and the connecting ring 602. The fixing bolts 603 and the side plates 2 and the connecting ring 602 form a rotational connection mechanism. The clamping mechanism 13 includes a mounting block 1301 mounted on the forklift fork 7. The rear end of the mounting block 1301 is connected to a mounting plate 1302. A motor 1303 is mounted in the middle of the upper surface of the mounting plate 1302, and the motor 1303 penetrates the mounting plate 1302. The power output end of the motor 1303 is connected to a bidirectional screw 1304, and the bidirectional screw 1304 is rotatably connected to the middle of the mounting plate 1302. Connecting blocks 1305 are sleeved on the upper and lower ends of the bidirectional screw 1304. The rear end of the connecting block 1305 is fixedly connected to a clamping sleeve 1306. A number of rubber strips 1307 are mounted on one side of the two clamping sleeves 1306 close to each other. Threaded grooves adapted to the bidirectional screw 1304 are provided on the connecting blocks 1305. The connecting blocks 1305 and the bidirectional screw 1304 form a rotational connection mechanism. Sliding grooves adapted to the connecting blocks 1305 are provided on the mounting plate 1302. The chain transmission mechanism 12 includes a sprocket 1201 rotatably connected to the fixed rod 11. A chain 1202 is sleeved on the outer surface of the sprocket 1201. A chain support 1203 is fixedly connected to the rear end of the forklift fork 7. A support connecting rod 1204 is mounted on one side of the two chains 1202 close to each other. The support connecting rod 1204 is connected to the chain support 1203. The side plates 2 and the support plate 4 are provided with movable insertion holes adapted to the support shaft 5.

[0028] Working principle: When it is necessary to adjust the distance of the forklift forks 7, the right forklift fork 7 is pushed to move by the oil cylinder 9. While the forklift fork 7 is moving, the sprocket 1201 is driven to rotate, and the chain 1202 is driven to move, so as to drive the left forklift fork 7 to move in the opposite direction, achieving the purpose of using one distance-adjusting oil cylinder 9 to control two forklift forks 7 at the same time, realizing the synchronous distance adjustment of the forklift forks 7. At the same time, since one oil circuit and control valve are reduced, the manufacturing cost of the forklift distance-adjusting fork is reduced. After adjustment, the motor 1303 is turned on, and the bidirectional screw 1304 is driven to rotate by the motor 1303, so that the clamping sleeve 1306 on the connecting block 1305 clamps the lower cross beam 3, facilitating the lower cross beam 3 to share the gravity of the support shaft 5, thereby improving the service life of the support shaft 5. By providing a rubber strip 1307, it is convenient to protect the lower cross beam 3 during the clamping process, avoid abrasion on the outer surface of the lower cross beam 3 during the clamping and load-bearing process, and can increase the firmness of clamping with the lower cross beam 3. When the support shaft 5 is damaged, the fixing bolt 603 is unscrewed, the fixing sleeve 601 and the connecting ring 602 are separated, and after the forklift fork 7 is supported by a hoist, the support shaft 5 is pulled out and replaced.

[0029] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0030] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and all should be covered by the protection scope of the present utility model.

Claims

1. A forklift fork distance adjustment mechanism, characterized in that: include: An upper crossbeam (1), the left and right sides of the upper crossbeam (1) are fixedly connected with side panels (2), the middle of the bottoms of the two groups of side panels (2) are fixedly connected with a lower crossbeam (3), the middle of the upper crossbeam (1) and the lower crossbeam (3) are fixedly connected with a support plate (4), a support shaft (5) is inserted in the middle of the upper ends of the two groups of side panels (2), a locking mechanism (6) is installed on the left and right sides of the support shaft (5), and a fork (7) is sleeved on the left and right sides of the support shaft (5), and the left and right sides of the rear ends of the upper crossbeam (1) and the lower crossbeam (3) are fixedly connected with a column plate (14); A cylinder support (8) is installed on the side of the left side plate (2) close to the support plate (4), and a cylinder (9) is rotatably connected in the middle of the cylinder support (8). A fixing plate (10) is fixedly connected in the middle of the rear end of the right fork (7). The right side of the cylinder (9) is connected to the fixing plate (10). A fixing rod (11) is fixedly connected at the bottom of the rear end of the side plate (2). A chain transmission mechanism (12) is installed at the other end of the fixing rod (11). A clamping mechanism (13) is installed at the bottom of the rear end of the fork (7).

2. A forklift fork distance adjustment mechanism according to claim 1, characterized in that: The locking mechanism (6) comprises a fixing sleeve (601) sleeved on the supporting shaft (5), two sets of fixing sleeves (601) are fixedly connected to a connecting ring (602) on one side close to each other, and fixing bolts (603) are inserted at the upper and lower ends of the connecting ring (602).

3. A forklift fork distance adjustment mechanism according to claim 2, characterized in that: The side plate (2) and the connecting ring (602) are provided with threaded holes matched with the fixing bolts (603), and the fixing bolts (603), the side plate (2) and the connecting ring (602) form a rotating connection mechanism.

4. The forklift fork distance adjustment mechanism according to claim 1, characterized in that: The clamping mechanism (13) comprises a mounting block (1301) mounted on the fork (7), the rear end of the mounting block (1301) being connected to a mounting plate (1302), a motor (1303) being mounted in the middle of the upper surface of the mounting plate (1302), and the motor (1303) passing through the mounting plate (1302), a bidirectional screw (1304) being connected to the power output end of the motor (1303), and the bidirectional screw (1304) being rotatably connected to the middle of the mounting plate (1302), a connecting block (1305) being sleeved at the upper and lower ends of the bidirectional screw (1304), a clamping sleeve (1306) being fixedly connected to the rear end of the connecting block (1305), and a plurality of rubber strips (1307) being mounted on two sets of the clamping sleeves (1306) close to each other.

5. A forklift fork distance adjustment mechanism according to claim 4, characterized in that: The connecting block (1305) is provided with a thread groove matched with the bidirectional screw (1304), the connecting block (1305) and the bidirectional screw (1304) form a rotating connection mechanism, and the mounting plate (1302) is provided with a sliding groove matched with the connecting block (1305).

6. The forklift fork distance adjustment mechanism according to claim 1, characterized in that: The chain transmission mechanism (12) comprises a sprocket (1201) rotatably connected to a fixed rod (11); a chain (1202) is sleeved on the outer surface of the sprocket (1201); a chain support (1203) is fixedly connected to the rear end of the fork (7); a support connecting rod (1204) is installed on one side where two groups of chains (1202) are close to each other; and the support connecting rod (1204) is connected to the chain support (1203).

7. The forklift fork distance adjustment mechanism according to claim 1, characterized in that: The side plate (2) and the support plate (4) are provided with movable plug holes adapted to the support shaft (5).

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