Adjustable pallet fork

Abstract

Two fixed pallet forks are connected through a first connecting rod, two movable pallet forks are connected through a second connecting rod, the movable pallet forks are arranged on the fixed pallet forks in a sliding mode, the positions of the movable pallet forks on the fixed pallet forks are adjusted, then the overall length of a horizontal section of the pallet forks is controlled, and in the sliding process of the movable pallet forks, the movable pallet forks can be fixed through the movable pallet forks. A first rack moves along with the movable pallet fork, then a first gear rotates, a second gear rotates through steering transmission among a first bevel gear, a second bevel gear and a second gear, so that clamping plates slide towards the two ends, and the purpose that the distance between the two clamping plates is gradually increased along with extension of the horizontal section of the pallet fork is achieved. And when the movable pallet fork carries the goods to retract, the distance between the two clamping plates is gradually reduced until the movable pallet fork returns to the initial position, and the goods are limited between the two clamping plates by the two clamping plates, so that the goods are prevented from toppling over in the transportation and stacking processes, and the accident rate when the forklift is used is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of handling equipment, in particular to an adjustable cargo fork. Background Art

[0002] A forklift is an industrial handling vehicle, which refers to various wheeled handling vehicles that are used for loading and unloading, stacking and short-distance transportation of palletized goods. They are often used in the fields of transporting large objects in warehouses, equipment maintenance and cargo transportation, and are usually powered by a fuel engine or battery.

[0003] The fork is the most commonly used picking device for forklifts, which is why the forklift gets its name. The forklift is equipped with two forks shaped like the letter L. The horizontal section of the fork is the working part that places the goods, and the vertical section is the supporting part.

[0004] When the forks on the forklift lifting mechanism are in use, the length is generally fixed and cannot be adjusted, which is inconvenient when carrying goods from a large vehicle and limits the scope of use. The prior art uses retractable forks to deal with this situation, but the extension of the horizontal section of the fork will lead to a decrease in its load-bearing capacity, so it is often used to transport larger and lighter goods. During the transportation of lighter goods, the goods on it are easily tipped over due to factors such as the tilt of the forks during stacking, causing damage to the goods and even involving the already stacked goods, causing unnecessary losses to the factory. Utility Model Content

[0005] The purpose of the utility model is to provide an adjustable cargo fork to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adjustable fork comprises: a fixed fork, two of the fixed forks are connected by a first connecting rod, a movable fork is slidably arranged on the fixed fork, the two movable forks are connected by a second connecting rod, a first rack is fixedly connected to the bottom of the second connecting rod, a mounting box is fixedly connected to the first connecting rod, a first rotating shaft and a second rotating shaft are rotatably arranged in the mounting box, a first gear and a first bevel gear are fixedly sleeved on the first rotating shaft, a second bevel gear and a second gear are fixedly sleeved on the second rotating shaft, the first gear is meshed with the first rack, the first bevel gear is meshed with the second bevel gear, two second racks are slidably arranged in the mounting box, the two second racks are meshed with each other on both sides of the second gear, and the ends of the two second racks are fixedly connected with a clamping plate.

[0007] Furthermore, an oil cylinder is fixedly mounted on the first connecting rod, and an output shaft of the oil cylinder is rotatably connected to the second connecting rod.

[0008] Furthermore, the two second racks cross the installation box, and one end that passes through the installation box for a longer distance is fixedly connected to the clamping plate.

[0009] Furthermore, a ball is embedded in the bottom of the horizontal section of the movable fork.

[0010] Furthermore, a wedge is slidably arranged inside the front end of the horizontal section of the movable fork, and the wedge is connected to the movable fork through a spring.

[0011] In the above technical solution, the adjustable fork provided by the utility model has the beneficial effects of:

[0012] The utility model arranges a movable fork on the fixed fork by sliding, adjusts the position of the movable fork on the fixed fork, and further controls the overall length of the horizontal section of the fork. During the sliding of the movable fork, the first rack moves together with the movable fork, and then the first gear rotates. The steering transmission between the first bevel gear, the second bevel gear and the second gear rotates, so that the clamping plate slides to both ends, and as the horizontal section of the fork is extended, the distance between the two clamping plates gradually increases. Then, when the movable fork retracts with the goods, the distance between the two clamping plates gradually decreases until the movable fork returns to the initial position, and the two clamping plates limit the goods between the two clamping plates, thereby avoiding dumping during transportation and stacking of the goods and reducing the accident rate when using a forklift.

[0013] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0014] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 A schematic diagram of the structure provided for an embodiment of the utility model;

[0017] Figure 2 A side sectional view provided for an embodiment of the utility model;

[0018] Figure 3 The embodiment of the utility model provides Figure 2 A magnified image;

[0019] Figure 4 This is a schematic diagram of the clamping mechanism structure provided in an embodiment of the utility model.

[0020] Description of reference numerals:

[0021] 1. Fixed fork; 2. Moving fork; 3. Cylinder; 4. Wedge; 5. Ball; 6. Mounting box; 7. First rack; 8. Second rack; 9. Clamping plate; 10. First rotating shaft; 11. First gear; 12. First bevel gear; 13. Second bevel gear; 14. Second rotating shaft; 15. Second gear; 16. Spring; 17. First connecting rod; 21. Second connecting rod. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0023] Please refer to 1-4, an adjustable fork comprises: a fixed fork 1, two fixed forks 1 are connected by a first connecting rod 17, a movable fork 2 is slidably arranged on the fixed fork 1, the two movable forks 2 are connected by a second connecting rod 21, a first rack 7 is fixedly connected to the bottom of the second connecting rod 21, a mounting box 6 is fixedly connected to the first connecting rod 17, a first rotating shaft 10 and a second rotating shaft 14 are rotatably arranged in the mounting box 6, a first gear 11 and a first bevel gear 12 are fixedly sleeved on the first rotating shaft 10, a second bevel gear 13 and a second gear 15 are fixedly sleeved on the second rotating shaft 14, the first gear 11 is meshed with the first rack 7, the first bevel gear 12 is meshed with the second bevel gear 13, two second racks 8 are slidably arranged in the mounting box 6, the two second racks 8 are meshed with each other on both sides of the second gear 15, and the ends of the two second racks 8 are fixedly connected with a clamping plate 9.

[0024] Specifically, the utility model adjusts the position of the movable fork 2 on the fixed fork 1 by slidingly setting the movable fork 2 on the fixed fork 1, thereby controlling the overall length of the horizontal section of the fork. During the sliding of the movable fork 2, the first rack 7 moves with the movable fork 2, thereby causing the first gear 11 to rotate, and the steering transmission between the first bevel gear 12, the second bevel gear 13, and the second gear 15 causes the second gear 15 to rotate, thereby causing the clamping plate 9 to slide to both ends, so that as the horizontal section of the fork is extended, the distance between the two clamping plates 9 gradually increases, and then when the movable fork 2 retracts with the goods, the distance between the two clamping plates 9 gradually decreases until the movable fork 2 returns to the initial position, and the two clamping plates 9 limit the goods between the two clamping plates 9, thereby avoiding dumping during cargo transportation and stacking, and reducing the accident rate when using a forklift.

[0025] Furthermore, the oil cylinder 3 is fixedly mounted on the first connecting rod 17 , and the output shaft of the oil cylinder 3 is rotatably connected to the second connecting rod 21 .

[0026] Specifically, refer to Figure 1 The oil cylinder 3 provides the sliding power for the movable fork 2, and a rotation connection is adopted between the output shaft of the oil cylinder 3 and the second connecting rod 21, so that a smaller tilt angle is allowed between the movable fork 2 and the fixed fork 1, that is, after the fork is extended, the overall load-bearing capacity of the fork is reduced, and then tilting, bending and the like occur between the fixed fork 1 and the movable fork 2. The rotation connection between the second connecting rod 21 and the oil cylinder 3 avoids damage to the output shaft of the oil cylinder 3 when the torque between the oil cylinder 3 and the second connecting rod 21 is too large.

[0027] Furthermore, the two second racks 8 cross the installation box 6 , and one end that passes through the installation box 6 for a longer distance is fixedly connected to the clamping plate 9 .

[0028] Specifically, refer to Figure 3 and Figure 4 The position of the second rack 8 in the mounting box 6 can be adjusted during installation, that is, the initial meshing position between the second gear 15 and the two second racks 8 is changed.

[0029] Furthermore, a ball 5 is embedded in the bottom of the horizontal section of the movable fork 2 .

[0030] Specifically, refer to Figure 1 and Figure 2 By embedding the ball 5 at the bottom end of the movable fork 2, on the one hand, it can serve as a support point during loading and unloading of goods to reduce the force between the movable fork 2 and the fixed fork 1; on the other hand, the sliding friction between the movable fork 2 and the loading and unloading platform is converted into rolling friction, thereby reducing the wear of the movable fork 2.

[0031] Furthermore, a wedge block 4 is slidably disposed in the front end of the horizontal section of the movable fork 2 , and the wedge block 4 is connected to the movable fork 2 via a spring 16 .

[0032] Specifically, refer to Figure 2 The inclined surface of the wedge block 4 faces the side away from the fixed fork 1. When transporting goods far away from the forklift, the wedge block 4 can be clamped on the cargo pallet, and the goods can be pulled back a certain distance for transportation, which greatly improves the practicality of the fork.

[0033] In this utility model, reference is made to Figures 1 to 4 First, start the wedge block 4, and push the second connecting rod 21 through the wedge block 4, so that the moving fork 2 slides on the fixed fork 1, and the first rack 7 moves with the moving fork 2, so that the first gear 11 rotates, driving the first bevel gear 12 coaxial with the first gear 11 to rotate, and then the second bevel gear 13 meshing with the first bevel gear 12 drives the second gear 15 to rotate, so that the clamping plate 9 slides to both sides. As the horizontal section of the fork is extended, the distance between the two clamping plates 9 gradually increases, and then when the moving fork 2 retracts with the goods, the distance between the two clamping plates 9 gradually decreases until the moving fork 2 returns to the initial position, and the two clamping plates 9 limit the goods between the two clamping plates 9, thereby avoiding the goods from tipping over during transportation and stacking, and reducing the accident rate when using a forklift.

[0034] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An adjustable fork, comprising: A fixed cargo fork (1), characterized in that the two fixed cargo forks (1) are connected by a first connecting rod (17), a movable cargo fork (2) is slidably arranged on the fixed cargo fork (1), the two movable cargo forks (2) are connected by a second connecting rod (21), a first rack (7) is fixedly connected to the bottom of the second connecting rod (21), a mounting box (6) is fixedly connected to the first connecting rod (17), a first rotating shaft (10) and a second rotating shaft (14) are rotatably arranged in the mounting box (6), a first rotating shaft (10) is fixedly sleeved on the first rotating shaft (10), and a second rotating shaft (14) is fixedly sleeved on the first rotating shaft (10). A first gear (11) and a first bevel gear (12) are provided, a second bevel gear (13) and a second gear (15) are fixedly sleeved on the second rotating shaft (14), the first gear (11) is meshed with the first rack (7), the first bevel gear (12) is meshed with the second bevel gear (13), two second racks (8) are slidably arranged in the mounting box (6), the two second racks (8) are meshed with the two sides of the second gear (15) respectively, and the ends of the two second racks (8) are fixedly connected with a clamping plate (9).

2. The adjustable fork according to claim 1, characterized in that: An oil cylinder (3) is fixedly mounted on the first connecting rod (17), and an output shaft of the oil cylinder (3) is rotatably connected to the second connecting rod (21).

3. The adjustable fork according to claim 1, characterized in that: The two second racks (8) cross the installation box (6), and one end that passes through the installation box (6) for a longer distance is fixedly connected to the clamping plate (9).

4. The adjustable fork according to claim 1, characterized in that: A ball (5) is embedded in the bottom of the horizontal section of the movable cargo fork (2).

5. The adjustable fork according to claim 1, characterized in that: A wedge block (4) is slidably arranged inside the front end of the horizontal section of the movable fork (2), and the wedge block (4) is connected to the movable fork (2) via a spring (16).

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