Telescopic fork structure driven by synchronous belt

Abstract

The telescopic fork structure comprises an upper fork assembly, a middle fork assembly, a lower fork assembly and a driving assembly, the upper fork assembly covers the middle fork assembly, the outer side of the middle fork assembly is in sliding fit with the upper fork assembly, and the inner side of the middle fork assembly is in sliding fit with the lower fork assembly. The upper fork assembly and the middle fork assembly as well as the middle fork assembly and the lower fork assembly are in meshing transmission through synchronous belts, and the driving assembly is installed on a side plate of the lower fork assembly. According to the utility model, the track on the middle fork assembly is in sliding fit with the roller groups on the upper fork assembly and the lower fork assembly, and the upper fork assembly and the middle fork assembly as well as the middle fork assembly and the lower fork assembly are in meshing transmission through the synchronous belt; according to the utility model, meshing transmission is realized, slipping is avoided, and transmission precision is high; the synchronous belt is used, maintenance and pollution are avoided, and the follow-up maintenance cost is reduced; the device is suitable for carrying long and large heavy-load materials, multiple forks are not needed, and the use cost is reduced.

Description

Technical Field

[0001] The utility model relates to a telescopic fork, in particular to a telescopic fork structure driven by a synchronous belt. Background Art

[0002] Telescopic forks are widely used in warehousing, papermaking, packaging, printing, tobacco, home appliances, wine and beverages, wool and cotton textiles, ports and terminals, railways, automobile manufacturing, steel smelting, chemicals and construction industries.

[0003] Traditional telescopic fork transmission adopts gear rack transmission or chain transmission. Both transmission methods require long-term maintenance. At the same time, gear rack transmission is prone to jamming. Chain transmission has low precision, high noise and high pollution. It cannot meet the working conditions with high environmental requirements, such as clean workshops. It is necessary to provide a telescopic fork suitable for high-demand maintenance-free working conditions and long and large material handling. Summary of the invention

[0004] In order to solve the problem that the gear rack transmission is easy to get stuck, the utility model provides a telescopic fork structure driven by a synchronous belt. The telescopic fork structure adopts synchronous belt meshing transmission, does not have a slipping phenomenon, and has high transmission accuracy.

[0005] The utility model provides the following technical solutions:

[0006] A telescopic fork structure driven by a synchronous belt comprises an upper fork assembly, a middle fork assembly, a lower fork assembly and a drive assembly, wherein the upper fork assembly covers the middle fork assembly, the outer side of the middle fork assembly is slidably matched with the upper fork assembly, the inner side of the middle fork assembly is slidably matched with the lower fork assembly, the upper fork assembly and the middle fork assembly, as well as the middle fork assembly and the lower fork assembly are meshed and driven by a synchronous belt, and the drive assembly is mounted on the side plate of the lower fork assembly.

[0007] Furthermore, the upper fork assembly includes an upper fork, a roller member, a guide block, and a synchronous belt toothed plate member. The roller member and the guide block are installed on the two inner plates of the upper fork, and the synchronous belt toothed plate member is installed on the top surface of the upper fork.

[0008] Furthermore, the middle fork assembly includes a middle fork, a synchronous belt assembly and a synchronous belt toothed plate assembly, the synchronous belt assembly and the middle fork are installed on the synchronous belt toothed plate assembly, the inner and outer sides of the middle fork form a track, and the roller member of the upper fork assembly slides on the outer track of the middle fork assembly.

[0009] Furthermore, the synchronous belt assembly is composed of a synchronous belt, a synchronous pulley assembly, a No. 1 synchronous pulley mounting plate assembly, a No. 2 synchronous pulley mounting plate assembly and a support member. The synchronous pulley assemblies are installed on the sides of the No. 1 synchronous pulley mounting plate assembly and the No. 2 synchronous pulley mounting plate assembly, and a synchronous belt is sleeved between the two synchronous pulley assemblies. A plurality of support members are arranged between the No. 1 synchronous pulley mounting plate assembly and the No. 2 synchronous pulley mounting plate assembly, and the support members are used to support the middle fork.

[0010] Furthermore, the synchronous belt in the middle fork assembly is meshed with the synchronous belt toothed plate in the upper fork assembly for transmission.

[0011] Furthermore, the lower fork assembly includes a No. 1 lower fork side plate, a No. 2 lower fork side plate, a roller group, a guide block group, a synchronous belt group and a synchronous belt toothed plate group. The No. 1 lower fork side plate and the No. 2 lower fork side plate are connected by a connecting plate and installed on the bottom plate. The roller group and the guide block group are installed on the outer walls of the No. 1 lower fork side plate and the No. 2 lower fork side plate. The synchronous belt toothed plate group is installed between the No. 1 lower fork side plate and the No. 2 lower fork side plate. The synchronous belt group is installed on the synchronous belt toothed plate group. The roller group slides on the inner track of the middle fork assembly.

[0012] Furthermore, the synchronous belt assembly of the lower fork assembly is meshed with the synchronous belt toothed plate assembly of the middle fork assembly for transmission.

[0013] Furthermore, the synchronous belt toothed plate group in the lower fork assembly is meshed with the synchronous belt in the middle fork assembly for transmission.

[0014] Furthermore, the driving assembly consists of a motor, a synchronous pulley and a motor shaft. A synchronous pulley is arranged on the motor shaft of the motor. The synchronous pulley and the synchronous pulley assembly of the lower fork assembly are driven by a synchronous belt.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model adopts the sliding cooperation of the track on the middle fork assembly with the roller group on the upper fork assembly and the lower fork assembly, and the upper fork assembly and the middle fork assembly, as well as the middle fork assembly and the lower fork assembly are driven by the synchronous belt meshing transmission; the utility model adopts the synchronous belt meshing transmission, there is no slipping phenomenon, and the transmission accuracy is high; the use of synchronous belts is maintenance-free and pollution-free, reducing the subsequent maintenance cost; it can be used for the handling of long and heavy-loaded materials, without the need for multiple forks, reducing the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model.

[0017] Figure 2 It is a structural schematic diagram of the upper fork assembly of the utility model.

[0018] Figure 3 It is a structural schematic diagram of the middle fork assembly of the utility model.

[0019] Figure 4 It is a structural schematic diagram of the synchronous belt assembly in the middle fork assembly of the utility model.

[0020] Figure 5 It is a structural schematic diagram of the lower fork assembly of the utility model.

[0021] Figure 6 for Figure 5 Side view of.

[0022] Figure 7 It is a structural schematic diagram of the drive assembly of the utility model.

[0023] Figure 8 It is a transmission schematic diagram of the synchronous pulley assembly of the drive assembly and the lower fork assembly of the utility model.

[0024] Fig. 9 It is a schematic diagram of the synchronous belt meshing transmission of the utility model.

[0025] In the figure: 10, upper fork assembly, 20, middle fork assembly, 30, lower fork assembly, 40, driving assembly;

[0026] 11. upper fork, 12. roller, 13. guide block, 14. synchronous belt toothed plate;

[0027] 21. middle fork, 22. synchronous belt assembly, 23. synchronous belt toothed plate assembly;

[0028] 211, track, 221, synchronous belt, 222, synchronous pulley assembly, 223, No. 1 synchronous pulley mounting plate assembly, 224, No. 2 synchronous pulley mounting plate assembly, 225, support member;

[0029] 31. No. 1 lower fork side plate, 32. No. 2 lower fork side plate, 33. Roller assembly, 34. Guide block assembly, 35. Connecting plate; 36. Bottom plate; 37. Synchronous belt assembly, 38. Synchronous belt toothed plate assembly;

[0030] 41. Motor, 42. Motor shaft, 43. Synchronous pulley. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] See also Figure 1The utility model is a telescopic fork structure driven by a synchronous belt, comprising an upper fork assembly 10, a middle fork assembly 20, a lower fork assembly 30, and a driving assembly 40. The upper fork assembly 10 covers the middle fork assembly 20, the outer side of the middle fork assembly 20 slides with the upper fork assembly 10, and the inner side of the middle fork assembly 20 slides with the lower fork assembly 30. The upper fork assembly 10 and the middle fork assembly 20, as well as the middle fork assembly 20 and the lower fork assembly 30 are meshed and driven by a synchronous belt, and the driving assembly 40 is installed on the side plate of the lower fork assembly 30.

[0033] Figure 2 As shown, the upper fork assembly 10 includes an upper fork 11, a roller member 12, a guide block 13, and a synchronous belt toothed plate member 14. The roller member 12 and the guide block 13 are installed on the two inner side plates of the upper fork 11, and the synchronous belt toothed plate member 14 is installed on the top surface of the upper fork 11.

[0034] Figure 3 As shown, the middle fork assembly 20 includes a middle fork 21, a synchronous belt assembly 22 and a synchronous belt toothed plate assembly 23. The synchronous belt assembly 22 and the middle fork 21 are installed on the synchronous belt toothed plate assembly 23. The inner and outer sides of the middle fork 21 form a track 211. The roller member 12 of the upper fork assembly 10 slides on the outer track 211 of the middle fork assembly 20.

[0035] in, Figure 4 As shown, the synchronous belt assembly 22 consists of a synchronous belt 221, a synchronous pulley assembly 222, a No. 1 synchronous pulley mounting plate assembly 223, a No. 2 synchronous pulley mounting plate assembly 224 and a support member 225. The synchronous pulley assembly 222 is installed on the side of the No. 1 synchronous pulley mounting plate assembly 223 and the No. 2 synchronous pulley mounting plate assembly 224, and a synchronous belt 221 is sleeved between the two synchronous pulley assemblies 222. A plurality of support members 225 are arranged between the No. 1 synchronous pulley mounting plate assembly 223 and the No. 2 synchronous pulley mounting plate assembly 224, and the support member 225 is used to support the middle fork 21.

[0036] Fig. 9 As shown, the synchronous belt 221 in the middle fork assembly 20 is meshed with the synchronous belt toothed plate 14 in the upper fork assembly 10 for transmission.

[0037] Figure 5 , Figure 6 As shown, the lower fork assembly 30 includes a No. 1 lower fork side plate 31 , a No. 2 lower fork side plate 32 , a roller group 33 , a guide block group 34 , a synchronous belt group 37 , and a synchronous belt toothed plate group 38 .

[0038] The No. 1 lower fork side plate 31 and the No. 2 lower fork side plate 32 are connected by a connecting plate 35 and installed on the bottom plate 36, the roller group 33 and the guide block group 34 are installed on the outer walls of the No. 1 lower fork side plate 31 and the No. 2 lower fork side plate 32, the synchronous belt toothed plate group 38 is installed between the No. 1 lower fork side plate 31 and the No. 2 lower fork side plate 32, the synchronous belt group 37 is installed on the synchronous belt toothed plate group 38, and the roller group 33 is slidably fitted on the inner track 211 of the middle fork assembly.

[0039] Figure 7 , Figure 8 As shown, the driving assembly 40 consists of a motor 41, a synchronous pulley 43 and a motor shaft 42. The synchronous pulley 43 is set on the motor shaft 42 of the motor 41, and the synchronous pulley 43 and the synchronous belt group 37 of the lower fork assembly 30 are driven by a synchronous belt.

[0040] Fig. 9 As shown, the synchronous belt assembly 37 of the lower fork assembly 30 is meshed with the synchronous belt toothed plate assembly 23 of the middle fork assembly 20 for transmission.

[0041] The synchronous belt toothed plate set 38 in the lower fork assembly 30 is meshed with the synchronous belt 221 in the middle fork assembly 20 for transmission.

[0042] After the motor 41 is started forward, the synchronous pulley 43 rotates forward, and the synchronous pulley 43 and the synchronous belt group 37 are driven by the synchronous belt. The synchronous belt toothed plate assembly 23 is fixed on the middle fork 21, and the synchronous belt toothed plate assembly 23 is driven by the transmission of the synchronous belt to move forward, thereby the middle fork assembly 20 moves forward; since the middle fork assembly 20 moves forward, the synchronous belt assembly 22 moves forward, and since the synchronous belt toothed plate group 38 is fixed on the lower fork assembly 30 and does not move, the synchronous belt 221 moves forward, thereby driving the synchronous belt toothed plate 14 fixed on the upper fork assembly 10 to move forward, thereby pushing the upper fork assembly 10 to move forward.

[0043] After the motor 41 is started in reverse, the synchronous pulley 43 rotates in the reverse direction. The synchronous pulley 43 and the synchronous belt group 37 are driven by the synchronous belt. The synchronous belt toothed plate assembly 23 is fixed on the middle fork 21. The synchronous belt toothed plate assembly 23 is driven by the transmission of the synchronous belt to move in the reverse direction, thereby the middle fork assembly 20 moves in the reverse direction. Since the middle fork assembly 20 moves in the reverse direction, the synchronous belt assembly 22 moves in the reverse direction. Since the synchronous belt toothed plate group 38 is fixed on the lower fork assembly 30 and does not move, the synchronous belt 221 moves in the reverse direction, thereby driving the synchronous belt toothed plate 14 fixed on the upper fork assembly 10 to move in the reverse direction, thereby pushing the upper fork assembly 10 to move in the reverse direction.

[0044] Because the roller member 12 of the upper fork assembly and the roller group 33 of the lower fork assembly run on the track of the middle fork 21, the upper and lower limit positions are achieved; at the same time, the guide block assembly 13 of the upper fork assembly 10 and the guide block group 34 of the lower fork assembly 30 limit the swing of the extended fork in the left and right directions; thereby achieving the functions of smoothly extending to pick up goods, stacking, and returning to the center.

[0045] The utility model adopts meshing transmission, with precise control and high positioning accuracy; it has fast running speed, stable operation and low noise, which can greatly improve production efficiency; the utility model is lightweight and can well meet the working conditions with strict weight requirements; the structure has high strength, strong load capacity, large moment of inertia and small deflection. The utility model is suitable for applications with high working conditions requirements, such as clean rooms.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A telescopic fork structure driven by a synchronous belt, characterized in that: The invention comprises an upper fork assembly (10), a middle fork assembly (20), a lower fork assembly (30), and a driving assembly (40); the upper fork assembly (10) covers the middle fork assembly (20); the outer side of the middle fork assembly (20) is slidably matched with the upper fork assembly (10); the inner side of the middle fork assembly (20) is slidably matched with the lower fork assembly (30); the upper fork assembly (10) and the middle fork assembly (20), as well as the middle fork assembly (20) and the lower fork assembly (30) are meshed and driven by a synchronous belt; and the driving assembly (40) is mounted on a side plate of the lower fork assembly (30).

2. A telescopic fork structure driven by a synchronous belt according to claim 1, characterized in that: The upper fork assembly (10) comprises an upper fork (11), a roller member (12), a guide block (13), and a synchronous belt toothed plate member (14); the roller member (12) and the guide block (13) are installed on two inner side plates of the upper fork (11), and the synchronous belt toothed plate member (14) is installed on the top surface of the upper fork (11).

3. The telescopic fork structure of synchronous belt drive according to claim 1, characterized in that: The middle fork assembly (20) comprises a middle fork (21), a synchronous belt assembly (22) and a synchronous belt toothed plate assembly (23); the synchronous belt assembly (22) and the middle fork (21) are mounted on the synchronous belt toothed plate assembly (23); inner and outer sides of the middle fork (21) form a track (211); and the roller member (12) of the upper fork assembly (10) is slidably engaged on the outer track (211) of the middle fork assembly (20).

4. The telescopic fork structure of synchronous belt drive according to claim 3, characterized in that: The synchronous belt assembly (22) is composed of a synchronous belt (221), a synchronous pulley assembly (222), a No. 1 synchronous pulley mounting plate assembly (223), a No. 2 synchronous pulley mounting plate assembly (224) and a support member (225); the synchronous pulley assembly (222) is mounted on the side of the No. 1 synchronous pulley mounting plate assembly (223) and the No. 2 synchronous pulley mounting plate assembly (224); a synchronous belt (221) is sleeved between the two synchronous pulley assemblies (222); a plurality of support members (225) are arranged between the No. 1 synchronous pulley mounting plate assembly (223) and the No. 2 synchronous pulley mounting plate assembly (224); and the support member (225) is used to support the middle fork (21).

5. The telescopic fork structure of synchronous belt drive according to claim 4, characterized in that: The synchronous belt (221) in the middle fork assembly (20) is meshed with the synchronous belt toothed plate (14) in the upper fork assembly (10) for transmission.

6. The telescopic fork structure of synchronous belt drive according to claim 1, characterized in that: The lower fork assembly (30) comprises a No. 1 lower fork side plate (31), a No. 2 lower fork side plate (32), a roller group (33), a guide block group (34), a synchronous belt group (37) and a synchronous belt toothed plate group (38); the No. 1 lower fork side plate (31) and the No. 2 lower fork side plate (32) are connected by a connecting plate (35) and are mounted on a bottom plate (36); the roller group (33) and the guide block group (34) are mounted on the outer walls of the No. 1 lower fork side plate (31) and the No. 2 lower fork side plate (32); the synchronous belt toothed plate group (38) is mounted between the No. 1 lower fork side plate (31) and the No. 2 lower fork side plate (32); the synchronous belt group (37) is mounted on the synchronous belt toothed plate group (38); and the roller group (33) is slidably matched on an inner track (211) of the middle fork assembly.

7. A telescopic fork structure driven by a synchronous belt according to claim 6, characterized in that: The synchronous belt assembly (37) of the lower fork assembly (30) is meshed with the synchronous belt toothed plate assembly (23) of the middle fork assembly (20) for transmission.

8. The telescopic fork structure of synchronous belt drive according to claim 6, characterized in that: The synchronous belt toothed plate group (38) in the lower fork assembly (30) is meshed with the synchronous belt (221) in the middle fork assembly (20) for transmission.

9. The telescopic fork structure of synchronous belt drive according to claim 1, characterized in that: The driving assembly (40) comprises a motor (41), a synchronous pulley (43) and a motor shaft (42); a synchronous pulley (43) is arranged on the motor shaft (42) of the motor (41); and the synchronous pulley (43) and the synchronous belt set (37) of the lower fork assembly (30) are driven by a synchronous belt.

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