Single-drive two-way double-extension type pallet fork

Abstract

The utility model relates to the technical field of pallet forks, in particular to a single-drive bidirectional double-extending pallet fork which comprises a frame body, a middle movable frame and an upper movable frame, a driving gear and two primary driven gears are rotationally arranged on the frame body, the driving gear is in meshed connection with the two primary driven gears, and a driving part is arranged on one side of the frame body. A rack II is also fixedly arranged on the frame body; the middle movable frame is located above the frame body, a synchronous gear and two second-stage driven gears are rotationally arranged on the middle movable frame, the second-stage driven gears are connected with the synchronous gear and a second rack in a meshed mode, a first rack is fixedly arranged on the lower portion of the middle movable frame, and the first rack is connected with two first-stage driven gears in a meshed mode; a roller assembly is arranged on the lower portion of the upper movable frame, a third rack is fixedly arranged on the lower portion of the upper movable frame, and the third rack is connected with the two secondary driven gears in an engaged mode. According to the utility model, the telescopic stroke distance is effectively increased, and the application range is greatly widened; and meanwhile, bidirectional stretching can be performed.

Description

Technical Field

[0001] The utility model relates to the technical field of cargo forks, in particular to a single-drive, bidirectional and double-extending cargo fork. Background Art

[0002] Forks can be used to carry, stack and transport various goods over short distances. They have a wide range of applications. They can pick up, move and unload goods of different shapes and weights efficiently and quickly. For example, in a warehouse, forks can take goods from the shelves in the warehouse and transport them to designated places; on trucks, forks can easily take goods off trucks; on factory production lines, forks can transport raw materials or finished products from one place to another, improving production efficiency.

[0003] After the production of aluminum coils is completed, the aluminum coils are usually placed on saddles, waiting for subsequent forks to transfer the aluminum coils placed on the saddles. Multiple saddles are usually arranged side by side on the ground. The telescopic forks in the prior art cannot transfer aluminum coils on saddles at a long distance. The telescopic forks have the problem of short travel distance, and the existing telescopic forks can only achieve single-direction telescopic extension. Summary of the invention

[0004] The utility model provides a single-drive bidirectional double-extending fork to solve the problem that the existing telescopic fork has a short travel distance and can only be extended in one direction. The fork effectively increases the telescopic travel distance and greatly improves the scope of application; and can also be extended in two directions.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: a single-drive, bidirectional, double-extendable fork, comprising a frame body, a middle movable frame and an upper movable frame, a driving gear and two primary driven gears are rotatably arranged on the frame body, the driving gear is meshed and connected with the two primary driven gears, a driving member for driving the driving gear to rotate is arranged on one side of the frame body, a rack 2 is also fixedly arranged on the frame body, the driving gear is driven to rotate by the driving member, and the driving gear can drive the two primary driven gears to rotate.

[0006] The middle movable frame is located above the frame body, and a synchronous gear and two secondary driven gears are rotatably arranged on the middle movable frame, and the secondary driven gear is meshed and connected with the synchronous gear and rack 2. A rack 1 is fixedly arranged at the lower part of the middle movable frame, and rack 1 is meshed and connected with the two primary driven gears. Through the cooperation of rack 1 and the two primary driven gears, the middle movable frame body can be extended to the left or right, thereby achieving a two-way extension effect.

[0007] A roller assembly is arranged at the lower part of the upper movable frame, and a rack three is fixedly arranged at the lower part of the upper movable frame. The rack three is meshed and connected with the two secondary driven gears. Through the cooperation of the secondary driven gear and the rack two and the rack three, the upper movable frame can be extended to the left or right, thereby achieving a two-way double extension effect.

[0008] Further, the driving gear includes a driving shaft, both ends of which are rotatably connected to the frame, and one end of the driving shaft is connected to the output end of the driving member; the first-level driven gear includes a first-level gear shaft, both ends of which are rotatably connected to the frame, and the driving gear is located between two first-level driven gears, so that the rotation of the driving gear drives the two first-level driven gears to rotate synchronously.

[0009] Furthermore, the middle movable frame includes two frame plates, the lower outer side of the frame plates is provided with a track groove 1, and the upper inner side is provided with a track groove 2; the rack 1 is fixedly arranged on the lower inner side of one of the frame plates.

[0010] Furthermore, a synchronous wheel shaft and two secondary gear shafts are rotatably arranged between the two frame plates, the synchronous gear is fixedly sleeved on the synchronous wheel shaft, the secondary driven gear is fixedly sleeved on the secondary gear shaft, the synchronous gear is located between the two secondary driven gears, and the two secondary driven gears are rotated synchronously through the synchronous gear.

[0011] Furthermore, a plurality of walking wheel assemblies are symmetrically arranged on the frame, and the walking wheel assembly includes an axle and a walking wheel. One end of the axle is fixedly connected to the frame, and the other end is rotatably provided with the walking wheel. The walking wheel is located in the track groove 1. Through the cooperation between the walking wheel and the track groove 1, the middle movable frame can perform telescopic movement.

[0012] Furthermore, the upper movable frame includes an inner frame body and a saddle frame, the inner frame body is fixedly arranged at the bottom of the saddle frame, the inner frame body is located between the two frame plates, a saddle plate with a "V"-shaped structure is arranged on the top of the saddle frame, the rack three is fixedly arranged at the bottom of the inner frame body, and the saddle plate is used to support the aluminum coil to be transported to avoid damage to the aluminum coil.

[0013] Furthermore, the roller assembly includes a fixed shaft and a roller, the fixed shaft is fixedly arranged on the inner frame, the rollers are rotatably arranged at both ends of the fixed shaft, the rollers are located in the second track groove, and the cooperation between the rollers and the second track groove facilitates the telescopic movement of the upper movable frame.

[0014] Through the above technical solution, the beneficial effects of the utility model are:

[0015] The utility model has a reasonable structure and good use effect. The double-extending structure is adopted to increase the telescopic travel distance, greatly improve the scope of application, and can also transport aluminum coils on saddles at a long distance. At the same time, a single drive method is adopted to achieve the effect of two-way extension, further improving the scope of application.

[0016] The utility model drives the driving gear to rotate through the driving member, and the driving gear can drive the two primary driven gears to rotate, and the cooperation between the rack one and the two primary driven gears can make the middle movable frame body extend to the left or right, thereby realizing the effect of two-way extension; and under the cooperation between the secondary driven gear and the rack two and the rack three, the upper movable frame can be extended to the left or right, thereby realizing the effect of two-way double extension; at the same time, the telescopic travel distance is improved.

[0017] The walking wheel of the walking wheel assembly of the utility model cooperates with the first track groove, so that the middle movable frame can be telescopically moved; the roller of the roller assembly cooperates with the second track groove, so that the upper movable frame can be telescopically moved.

[0018] The utility model transfers the aluminum coil by means of the saddle plate on the top of the saddle frame, and the saddle plate is in a "V"-shaped structure, which supports the aluminum coil and can effectively prevent the aluminum coil from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a single-drive, two-way, double-extending fork in the utility model. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the structure of a single-drive, two-way, double-extending fork in the utility model. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the structure of a single-drive, two-way, double-extending fork in the utility model. Figure 3 ;

[0022] Figure 4 This is a schematic diagram of the structure of a single-drive, two-way, double-extending fork in the utility model. Figure 4 ;

[0023] Figure 5 It is a structural schematic diagram of the upper movable frame of the utility model;

[0024] Figure 6 It is a structural schematic diagram of the middle movable frame of the utility model.

[0025] The numbers in the accompanying drawings are: 1 is a frame, 2 is a driving gear, 3 is a primary driven gear, 4 is a primary gear shaft, 5 is a wheel axle, 6 is a walking wheel, 7 is a middle movable frame, 8 is a frame plate, 9 is a synchronous wheel axle, 10 is a synchronous gear, 11 is a secondary driven gear, 12 is a secondary gear shaft, 13 is a rack one, 14 is a track groove one, 15 is a track groove two, 16 is a rack two, 17 is an inner frame, 18 is a saddle frame, 19 is a saddle plate, 20 is a rack three, 21 is a fixed shaft, and 22 is a roller. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0027] like Figure 1 to Figure 6 As shown, a single-drive bidirectional double-extending fork comprises a frame 1, a middle movable frame 7 and an upper movable frame, a driving gear 2 and two primary driven gears 3 are rotatably arranged on the frame 1, the driving gear 2 is meshedly connected with the two primary driven gears 3, a driving member for driving the driving gear 2 to rotate is arranged on one side of the frame 1, and a rack 2 16 is also fixedly arranged on the frame 1. In this embodiment, the driving member can be an electric motor or a hydraulic motor, the driving member drives the driving gear 2 to rotate, and the driving gear 2 drives the two primary driven gears 3 to rotate synchronously.

[0028] The middle movable frame 7 is located above the frame body 1, and a synchronous gear 10 and two secondary driven gears 11 are rotatably provided on the middle movable frame 7. The secondary driven gear 11 is meshed and connected with the synchronous gear 10 and the rack 2 16. A rack 13 is fixedly provided at the lower part of the middle movable frame 7, and the rack 13 is meshed and connected with the two primary driven gears 3. The two primary driven gears 3 rotate, and in cooperation with the rack 13, the rack 13 drives the middle movable frame 7 to extend to the left or right.

[0029] A roller assembly is arranged at the lower part of the upper movable frame, and a rack three 20 is fixedly arranged at the lower part of the upper movable frame. The rack three 20 is meshed and connected with the two secondary driven gears 11. When the rack one 13 drives the middle movable frame 7 to move, the two secondary driven gears 11 rotate synchronously with the cooperation of the rack two 16, and due to the cooperation with the rack three 20, the rack three 20 drives the upper movable frame to extend to the left or right.

[0030] The driving gear 2 includes a driving shaft, both ends of which are rotatably connected to the frame 1, and both ends of the driving shaft are rotatably connected to the frame 1 through bearings, and one end of the driving shaft is connected to the output end of the driving member; the first-level driven gear 3 includes a first-level gear shaft 4, both ends of which are rotatably connected to the frame 1, the driving gear 2 is located between two first-level driven gears 3, and both ends of the first-level gear shaft 4 are rotatably connected to the frame 1 through bearings.

[0031] The middle movable frame 7 includes two frame plates 8, a track groove 14 is opened on the lower outer side of the frame plates 8, and a track groove 2 15 is opened on the upper inner side, and the height of the track groove 14 is lower than the height of the track groove 2 15; the rack 13 is fixedly arranged on the lower inner side of one of the frame plates 8.

[0032] A synchronous wheel shaft 9 and two secondary gear shafts 12 are rotatably arranged between the two frame plates 8, the synchronous gear 10 is fixedly sleeved on the synchronous wheel shaft 9, the secondary driven gear 11 is fixedly sleeved on the secondary gear shaft 12, the synchronous gear 10 is located between the two secondary driven gears 11, and the synchronous gear 10 causes the two secondary driven gears 11 to rotate synchronously.

[0033] A plurality of traveling wheel assemblies are symmetrically arranged on the frame body 1, and the traveling wheel assembly includes an axle 5 and a traveling wheel 6. One end of the axle 5 is fixedly connected to the frame body 1, and the other end is rotatably provided with the traveling wheel 6. The traveling wheel 6 is rotatably connected to the axle 5 via a bearing, and the traveling wheel 6 is located in the track groove 14. The cooperation between the traveling wheel 6 and the track groove 14 facilitates the telescopic movement of the middle movable frame.

[0034] The upper movable frame includes an inner frame body 17 and a saddle frame 18, the inner frame body 17 is fixedly arranged at the bottom of the saddle frame 18, the inner frame body 17 is located between the two frame plates 8, a saddle plate 19 with a "V"-shaped structure is arranged on the top of the saddle frame 18, the rack three 20 is fixedly arranged at the bottom of the inner frame body 17, wherein the saddle frame 18 is in a "V"-shaped structure, the inner frame body 17 includes two vertical upright plates, a plurality of mounting plates are arranged between the two vertical upright plates, and the rack three 20 is fixedly installed at the bottom of the mounting plates.

[0035] The roller assembly includes a fixed shaft 21 and a roller 22. The fixed shaft 21 is fixedly arranged on the inner frame 17. The rollers 22 are rotatably arranged at both ends of the fixed shaft 21. The rollers 22 are located outside the inner frame 17. The rollers 22 are rotatably connected to the fixed shaft 21 through bearings. The rollers 22 are located in the second track groove 15. The cooperation between the rollers 22 and the second track groove 15 facilitates the telescopic movement of the upper movable frame.

[0036] The working principle of the utility model is as follows: when the middle movable frame 7 and the upper movable frame extend to the left, the driving member is opened, and the output shaft of the driving member drives the driving shaft to rotate clockwise, and the driving shaft drives the driving gear 2 to rotate clockwise, and the driving gear 2 drives the two primary driven gears 3 to rotate counterclockwise, and the two primary driven gears 3 rotate to make the rack 13 move to the left. Since the rack 13 is fixedly mounted on the middle movable frame 7, the middle movable frame 7 moves to the left and extends out; the middle movable frame 7 moves to the left and drives the two secondary driven gears 11 and the synchronous gear 10 to move to the left. Through the engagement of the secondary driven gear 11 with the rack 2 16, the two secondary driven gears 11 rotate counterclockwise, so that the rack 3 20 moves to the left. Since the rack 3 20 is fixed on the upper movable frame, the upper movable frame 7 moves to the left and extends out, and then the upper movable frame can complete the picking and delivery of goods.

[0037] When the middle movable frame 7 and the upper movable frame extend to the right, the driving member is opened, and the output shaft of the driving member drives the driving shaft to rotate counterclockwise, and the driving shaft drives the driving gear 2 to rotate counterclockwise, and the driving gear 2 drives the two primary driven gears 3 to rotate clockwise. The two primary driven gears 3 rotate to make the rack 13 move to the right. Since the rack 13 is fixedly mounted on the middle movable frame 7, the middle movable frame 7 moves to the right and extends out; the middle movable frame 7 moves to the right and drives the two secondary driven gears 11 and the synchronous gear 10 to move to the right. Through the engagement of the secondary driven gear 11 with the rack 2 16, the two secondary driven gears 11 rotate clockwise to make the rack 3 20 move to the right. Since the rack 3 20 is fixed on the upper movable frame, the upper movable frame 7 moves to the right and extends out, and then the picking and delivery of the upper movable frame can be completed.

[0038] The embodiments described above are only preferred embodiments of the utility model and do not limit the scope of implementation of the utility model. Therefore, all equivalent changes or modifications made according to the technical solutions described in the patent scope of the utility model should be included in the scope of the patent application of the utility model.

Claims

1. A single-drive, bidirectional, double-extending fork, comprising a frame (1), characterized in that: It also includes a middle movable frame (7) and an upper movable frame, wherein a driving gear (2) and two primary driven gears (3) are rotatably arranged on the frame body (1), the driving gear (2) is meshingly connected with the two primary driven gears (3), a driving member for driving the driving gear (2) to rotate is arranged on one side of the frame body (1), and a second rack (16) is also fixedly arranged on the frame body (1); The middle movable frame (7) is located above the frame body (1), and a synchronous gear (10) and two secondary driven gears (11) are rotatably arranged on the middle movable frame (7), the secondary driven gear (11) is meshingly connected with the synchronous gear (10) and the second rack (16), and a rack (13) is fixedly arranged at the bottom of the middle movable frame (7), and the rack (13) is meshingly connected with the two primary driven gears (3); A roller assembly is arranged at the lower part of the upper movable frame, and a rack three (20) is fixedly arranged at the lower part of the upper movable frame. The rack three (20) is meshingly connected with the two secondary driven gears (11).

2. The single-drive, bidirectional, double-extending fork according to claim 1, characterized in that: The driving gear (2) comprises a driving shaft, both ends of which are rotatably connected to the frame (1), and one end of which is connected to the output end of the driving member; the first-stage driven gear (3) comprises a first-stage gear shaft (4), both ends of which are rotatably connected to the frame (1), and the driving gear (2) is located between two first-stage driven gears (3).

3. The single-drive, bidirectional, double-extending fork according to claim 1, characterized in that: The middle movable frame (7) comprises two frame plates (8), the lower outer side of the frame plates (8) being provided with a track groove 1 (14), and the upper inner side of the frame plates (8) being provided with a track groove 2 (15); the rack 1 (13) is fixedly arranged on the lower inner side of one of the frame plates (8).

4. The single-drive, bidirectional, double-extending fork according to claim 3, characterized in that: A synchronous wheel shaft (9) and two secondary gear shafts (12) are rotatably arranged between the two frame plates (8); the synchronous gear (10) is fixedly sleeved on the synchronous wheel shaft (9); the secondary driven gear (11) is fixedly sleeved on the secondary gear shaft (12); and the synchronous gear (10) is located between the two secondary driven gears (11).

5. The single-drive, bidirectional, double-extending fork according to claim 4, characterized in that: A plurality of running wheel assemblies are symmetrically arranged on the frame (1), the running wheel assemblies comprising a wheel axle (5) and a running wheel (6), one end of the wheel axle (5) is fixedly connected to the frame (1), and the other end is rotatably provided with the running wheel (6), and the running wheel (6) is located in the track groove 1 (14).

6. The single-drive, bidirectional, double-extending fork according to claim 3, characterized in that: The upper movable frame comprises an inner frame body (17) and a saddle frame (18), wherein the inner frame body (17) is fixedly arranged at the bottom of the saddle frame (18), the inner frame body (17) is located between the two frame plates (8), a saddle plate (19) in a "V"-shaped structure is arranged at the top of the saddle frame (18), and the rack three (20) is fixedly arranged at the bottom of the inner frame body (17).

7. The single-drive, bidirectional, double-extending fork according to claim 6, characterized in that: The roller assembly comprises a fixed shaft (21) and a roller (22); the fixed shaft (21) is fixedly arranged on the inner frame (17); the rollers (22) are rotatably arranged at both ends of the fixed shaft (21); and the rollers (22) are located in the second track groove (15).

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