High-speed long-stroke telescopic fork

Abstract

The utility model discloses a high-speed long-stroke telescopic fork which comprises an upper fork assembly, a middle fork assembly, a lower fork assembly, a driving assembly and a chain, the upper fork assembly covers the middle fork assembly, the middle fork assembly is installed on the lower fork assembly, the driving assembly is installed on the lower fork assembly, and the driving assembly drives the lower fork assembly to move. The lower fork assembly and the middle fork assembly are in transmission through a rack, and the middle fork assembly and the upper fork assembly are in transmission through a chain wheel and a chain. The telescopic fork is high in speed, and under the condition that the motor power is not changed, the cargo moving speed is increased; the stroke is increased, and the stroke of goods is increased under the condition that driving is not changed; the efficiency is high, the takt speed is greatly increased, and the efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a telescopic fork, in particular to a high-speed long-stroke telescopic fork. Background Art

[0002] Telescopic forks are widely used in industries such as warehousing, papermaking, packaging, printing, tobacco, household appliances, wine and beverages, wool and cotton textiles, port terminals, railways, automobile manufacturing, iron and steel smelting, chemical engineering, and construction.

[0003] The conventional transmission of the telescopic fork is as follows: the lower fork drives the middle fork, and the middle fork drives the upper fork. The moving distance of the upper fork is twice that of the middle fork, and the speed of the upper fork is twice that of the middle fork. At present, the market has an increasing demand for forks with high speed and large stroke. Conventional telescopic forks cannot balance speed and stroke at the same time. Either the motor power is increased to improve the speed, or the fork body length is increased to increase the stroke.

[0004] Therefore, a new telescopic fork is needed to solve the above problems. Summary of the Invention

[0005] To solve the problem that the existing telescopic fork cannot balance speed and stroke, the utility model provides a high-speed long-stroke telescopic fork.

[0006] The utility model provides the following technical solutions:

[0007] A high-speed long-stroke telescopic fork includes an upper fork assembly, a middle fork assembly, a lower fork assembly, a drive assembly, and a chain. The upper fork assembly covers the middle fork assembly. The middle fork assembly is installed on the lower fork assembly. The drive assembly is installed on the lower fork assembly, and the drive assembly drives the lower fork assembly to move. The lower fork assembly and the middle fork assembly are driven by a rack, and the middle fork assembly and the upper fork assembly are driven by a sprocket and chain.

[0008] Further, the upper fork assembly includes an upper fork, rollers, guide blocks, and chain fixing blocks. Rollers and guide blocks are arranged on both sides inside the upper fork. A chain fixing block is arranged on the inner top surface of the upper fork. The two sides inside the upper fork are slidably matched with the middle fork assembly through the rollers.

[0009] Further, the middle fork assembly includes a middle fork, a rack assembly, a sprocket assembly, and a chain fixing block assembly. Grooves are arranged on both sides of the middle fork, and the sprocket assembly is installed in the grooves. A chain fixing block assembly is arranged below the sprocket assembly. A chain is wound around the sprocket assembly and fixed by the chain fixing block assembly. The position above the sprocket assembly corresponds to the chain fixing block of the upper fork assembly. A rack assembly is arranged on the inner top surface of the middle fork.

[0010] Furthermore, the lower fork assembly includes lower fork side plates, a roller group, a guiding group, a connecting plate, a bottom plate, a sprocket group, and a gear group. The connecting plate is installed on the lower fork side plates, and the roller group and the guiding group are installed on the connecting plate. The bottom plate is installed at the bottom of the lower fork side plates. The sprocket group and the gear group are also installed on the lower fork side plates. A chain is wound around the sprocket group, and the gear group is in meshing transmission with the gearbox in the driving assembly.

[0011] Furthermore, the driving assembly includes a motor, a motor bracket, a first sprocket, a second sprocket, and a gearbox. The motor is installed on the motor bracket. The second sprocket and the first sprocket are installed at the upper and lower positions inside the gearbox. The motor drives the first sprocket to rotate, and the first sprocket drives the second sprocket to rotate.

[0012] Furthermore, one end of the chain is fixed to the chain fixing block of the upper fork assembly, and the other end of the chain bypasses the sprocket assembly and the sprocket group and is fixed to the chain fixing block assembly on the middle fork assembly.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] The present utility model has an upper fork assembly, a middle fork assembly, and a lower fork assembly. The lower fork assembly and the middle fork assembly are in rack transmission, and the middle fork assembly and the upper fork assembly are in sprocket and chain transmission. The present utility model is applicable to telescopic forks with high speed requirements and large stroke requirements, and has the following characteristics:

[0015] (1) Fast speed. When the motor power remains unchanged, the moving speed of the goods is increased.

[0016] (2) Larger stroke. When the drive remains unchanged, the stroke of the goods is increased.

[0017] (3) High efficiency. The beat speed is greatly increased, and the efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural view of the present utility model.

[0019] Figure 2 is a side view of the present utility model.

[0020] Figure 3 is Figure 1 an enlarged view of the lower fork assembly in the middle.

[0021] Figure 4 is Figure 1 an enlarged view of the sprocket group of the lower fork assembly in the middle.

[0022] Figure 5 is a schematic structural view of the upper fork assembly of the present utility model.

[0023] Figure 6This is a schematic structural diagram of the fork assembly in the present utility model.

[0024] Figure 7 This is an enlarged schematic diagram of the fork assembly in the present utility model.

[0025] In the figure: 10, upper fork assembly; 20, middle fork assembly; 30, lower fork assembly; 40, drive assembly; 50, chain.

[0026] 11, upper fork; 12, roller; 13, guide block; 14, chain fixing block.

[0027] 21, middle fork; 22, rack assembly; 23, sprocket assembly; 24, chain fixing block assembly; 25, groove.

[0028] 31, lower fork side plate; 32, roller group; 33, guide group; 34, connecting plate; 35, bottom plate; 36, sprocket group; 37, gear group.

[0029] 41, motor; 42, motor bracket; 43, first sprocket; 44, second sprocket; 45, gearbox. Embodiment

[0030] 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. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] Please refer to Figure 1 、 2 , a telescopic fork with high speed and long stroke of the present utility model includes an upper fork assembly 10, a middle fork assembly 20, a lower fork assembly 30, a drive assembly 40 and a chain 50. The upper fork assembly 10 covers the middle fork assembly 20, the middle fork assembly 20 is installed on the lower fork assembly 30, the drive assembly 40 is installed on the lower fork assembly 30, the drive assembly 40 drives the lower fork assembly 30 to move, the lower fork assembly 30 and the middle fork assembly 20 are driven by a rack, and the middle fork assembly 20 and the upper fork assembly 10 are driven by a sprocket and chain.

[0032] Figure 5 As shown in the figure, the upper fork assembly 10 includes an upper fork 11, rollers 12, guide blocks 13 and a chain fixing block 14. Rollers 12 and guide blocks 13 are arranged on both sides inside the upper fork 11, a chain fixing block 14 is arranged on the inner top surface of the upper fork 11, and both sides inside the upper fork 11 are slidably matched with the middle fork assembly 20 through the rollers 12.

[0033] Figure 6 and Figure 7As shown in the figure, the middle fork assembly 20 includes a middle fork 21, a rack assembly 22, a sprocket assembly 23 and a chain fixing block assembly 24. Grooves 25 are provided on both sides of the middle fork 21, and the sprocket assembly 23 is installed in the grooves 25. The chain fixing block assembly 24 is provided below the sprocket assembly 23. A chain 50 is wound around the sprocket assembly 23 and fixed by the chain fixing block assembly 24. The chain fixing block 14 of the upper fork assembly 10 corresponds to the position above the sprocket assembly 23. The rack assembly 22 is arranged on the inner top surface of the middle fork 21.

[0034] Figure 3 and Figure 4 As shown in the figure, the lower fork assembly 30 includes lower fork side plates 31, a roller group 32, a guiding group 33, a connecting plate 34, a bottom plate 35, a sprocket group 36 and a gear group 37. The connecting plate 34 is installed on the lower fork side plates 31, and the roller group 32 and the guiding group 33 are installed on the connecting plate 34. The bottom plate 35 is installed at the bottom of the lower fork side plates 31. The sprocket group 36 and the gear group 37 are also installed on the lower fork side plates 31. A chain 50 is wound around the sprocket group 36, and the gear group 37 meshes with the gearbox 45 in the driving assembly 40 for transmission.

[0035] The driving assembly 40 includes a motor 41, a motor bracket 42, a first sprocket 43, a second sprocket 44 and a gearbox 45. The motor 41 is installed on the motor bracket 42. The second sprocket 44 and the first sprocket 43 are installed at the upper and lower positions in the gearbox 45. The motor 41 drives the first sprocket 43 to rotate, and the first sprocket 43 drives the second sprocket 44 to rotate.

[0036] One end of the chain 50 is fixed to the chain fixing block 14 of the upper fork assembly 10, and one end bypasses the sprocket assembly 23 and the sprocket group 36 and is fixed to the chain fixing block assembly 24 on the middle fork assembly 20.

[0037] After the motor 41 is started forward, the first sprocket 43 rotates forward, the second sprocket 44 rotates forward, the gearbox 45 drives the gear group 37 to move forward, the rack assembly 22 fixed on the middle fork assembly 20 moves forward, the sprocket assembly 23 on the middle fork assembly 20 moves forward, driving the chain 50 to move forward. One end of the chain 50 is fixed to the chain fixing block 14 of the upper fork assembly 10, and one end bypasses the sprocket assembly 23 and the sprocket group 36 and is fixed to the chain fixing block assembly 24 on the middle fork assembly 20. Therefore, there are three sections of the chain bypassing the middle fork assembly 20. Therefore, the distance that the sprocket assembly 23 pushes the upper fork assembly 10 to travel is three times the distance that the middle fork assembly 20 travels. In the case of the same time, the speed of the upper fork assembly 10 is three times that of the middle fork assembly 20; the reverse is the same.

[0038] The utility model is applicable to telescopic forks with high speed requirements and large stroke requirements, and solves the problem that the existing telescopic forks cannot balance speed and stroke.

[0039] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A telescopic fork with high speed and long stroke, characterized in that: It includes an upper fork assembly (10), a middle fork assembly (20), a lower fork assembly (30), a driving assembly (40) and a chain (50). The upper fork assembly (10) covers the middle fork assembly (20), the middle fork assembly (20) is installed on the lower fork assembly (30), the driving assembly (40) is installed on the lower fork assembly (30), the driving assembly (40) drives the lower fork assembly (30) to move, the lower fork assembly (30) and the middle fork assembly (20) are driven by a rack, and the middle fork assembly (20) and the upper fork assembly (10) are driven by a sprocket and chain.

2. The telescopic fork with high speed and long stroke according to claim 1, wherein: The upper fork assembly (10) includes an upper fork (11), rollers (12), guide blocks (13) and a chain fixing block (14). The rollers (12) and guide blocks (13) are arranged on both sides inside the upper fork (11), the chain fixing block (14) is arranged on the inner top surface of the upper fork (11), and both sides inside the upper fork (11) are slidably matched with the middle fork assembly (20) through the rollers (12).

3. The telescopic fork with high speed and long stroke according to claim 2, characterized in that: The middle fork assembly (20) includes a middle fork (21), a rack assembly (22), a sprocket assembly (23) and a chain fixing block assembly (24). Grooves (25) are arranged on both sides of the middle fork (21), the sprocket assembly (23) is installed in the grooves (25), the chain fixing block assembly (24) is arranged below the sprocket assembly (23), the chain (50) is wound around the sprocket assembly (23) and fixed by the chain fixing block assembly (24), the chain fixing block (14) of the upper fork assembly (10) corresponds to the position above the sprocket assembly (23), and the rack assembly (22) is arranged on the inner top surface of the middle fork (21).

4. The telescopic fork with high speed and long stroke according to claim 3, characterized in that: The lower fork assembly (30) includes lower fork side plates (31), a roller group (32), a guide group (33), a connecting plate (34), a bottom plate (35), a sprocket group (36) and a gear group (37). The connecting plate (34) is installed on the lower fork side plates (31), the roller group (32) and the guide group (33) are installed on the connecting plate (34), the bottom plate (35) is installed at the bottom of the lower fork side plates (31), the sprocket group (36) and the gear group (37) are also installed on the lower fork side plates (31), the chain (50) is wound around the sprocket group (36), and the gear group (37) is in meshing transmission with the gearbox (45) in the driving assembly (40).

5. The telescopic fork with high speed and long stroke according to claim 1, characterized in that: The driving assembly (40) includes a motor (41), a motor bracket (42), a first sprocket (43), a second sprocket (44) and a gearbox (45). The motor (41) is installed on the motor bracket (42), the second sprocket (44) and the first sprocket (43) are installed at the upper and lower positions inside the gearbox (45), the motor (41) drives the first sprocket (43) to rotate, and the first sprocket (43) drives the second sprocket (44) to rotate.

6. The telescopic fork with high speed and long stroke according to claim 4, characterized in that: One end of the chain (50) is fixed to the chain fixing block (14) of the upper fork assembly (10), and the other end of the chain (50) bypasses the sprocket assembly (23) and the sprocket group (36) and is fixed to the chain fixing block assembly (24) on the middle fork assembly (20).

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