Traction pin mechanism with protection plug and automatic navigation tractor

Abstract

The utility model relates to a traction pin mechanism with a protective plug and an automatic navigation tractor. The traction pin mechanism comprises a fixed seat, a liftable traction pin structure and a power structure, the lifting traction pin structure comprises a traction pin, a linear bearing, a traction pin pressing plate, a guide rod, a spring and a protection plug. The power structure drives the traction pin in the lifting traction pin structure to be upwards inserted into the goods shelf traction hole or downwards separated from the goods shelf traction hole, so that automatic traction and unloading work of the automatic navigation tractor is achieved, and the whole mechanism is simple in structure, convenient to operate and wide in applicability. Besides, a protective plug is arranged in the liftable traction pin structure, so that a gap between the traction pin and the linear bearing is shielded, the service life of parts is prolonged, the traction pin is well protected and reinforced, and abrasion deformation of the traction pin is avoided.

Description

Technical Field

[0001] The utility model relates to the field of vehicles, in particular to a traction pin mechanism with a protection plug and an automatic navigation traction vehicle. Background Art

[0002] At present, flat-panel latent automatic navigation traction AGV trolleys are increasingly widely used in the entire industry, logistics and other fields to realize the automatic handling of goods. During the working process, the specific materials to be transported are loaded in the shelves and pulled to the target area by the AGV trolleys through autonomous navigation. The entire material transportation process is highly autonomous, thus taking on high-load repetitive labor and improving the efficiency of logistics transfer links in industrial production.

[0003] Among them, the automatically lifting traction pin mechanism is the key structure connecting the AGV trolley and the shelf. However, the current traction pin mechanism has great deficiencies during use: since the traction force of the towed goods is transmitted by the traction pin during the AGV trolley's logistics traction and transportation, the traction pin and the traction hole at the bottom of the shelf will frequently collide and rub against each other. As for the shelf, the traction hole at the bottom of the shelf connected to the traction pin is generally not specially hardened. This will cause metal or rubber debris to fall off under frequent collisions. If the debris falls between the traction pin shaft and the linear bearing, the traction pin will be stuck as a whole. In addition, frequent collisions and frictions will cause the traction pin shaft to adhere to foreign objects or deform to a certain extent, resulting in the traction pin being unable to fall back. Finally, the screws of the traction pin fixing structure are exposed. After a period of use, they will rust due to scratches and environmental influences, thereby affecting the fixation of the traction pin. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a heat dissipation structure and a self-moving device including the structure to solve one or more problems in the prior art.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A traction pin mechanism with a protective plug comprises a fixed seat, a liftable traction pin structure, and a power structure, wherein the liftable traction pin structure is arranged on the fixed seat, and the power structure is arranged on the side of the fixed seat; wherein the liftable traction pin structure comprises a traction pin, a linear bearing, a traction pin pressure plate, a guide rod, a spring, and a protective plug, wherein the traction pin is arranged in the linear bearing, the traction pin pressure plate is fixed at the upper and lower ends of the traction pin, one end of the guide rod is arranged in a hole at one end of the traction pin close to the traction pin pressure plate, and the other end is fixed on the fixed seat, the spring is arranged on the outside of the guide rod, and the protective plug is arranged on the traction pin and is located at the flange end of the linear bearing. When the automatic navigation traction AGV trolley is traction-connected, the AGV trolley moves to the designated position below the shelf. At this time, the power structure releases the force on the traction pin pressure plate in the liftable traction pin structure installed on the fixed seat. Under the force of the spring, the traction pin moves upward along the linear bearing and is inserted into the corresponding traction hole at the bottom of the shelf. The AGV trolley carries out the transport work on the shelf. When the AGV trolley is unloading, the power structure drives the traction pin pressure plate in the liftable traction pin structure to move downward, and the traction pin moves downward along the linear bearing, thereby separating from the traction hole of the shelf, that is, the AGV trolley releases the traction on the shelf. The entire mechanism has a simple structure, is easy to operate, and has wide applicability. In addition, a protective plug is provided in the liftable traction pin structure, which not only shields the gap between the traction pin and the linear bearing, avoids the debris generated by the collision between the traction pin and the shelf, and the debris in the environment, which causes the traction pin mechanism to be stuck as a whole, resulting in the inability to continue to use, but also plays a better protective and strengthening role for the traction pin itself, thereby preventing it from being worn and deformed during the collision. In addition, one end of the guide rod is arranged in the hole at the end of the traction pin, which further guides the traction pin and improves the accuracy of its moving position.

[0007] Preferably, the protective plug includes a guide section and a connecting section, wherein the guide section is arranged above the connecting section; a guide hole penetrating the guide section and the connecting section is arranged in the middle of the protective plug. The protective plug is sleeved on the traction pin through the guide hole, and the connecting section is installed on the linear bearing by gluing or other methods. The guide section not only has a good shielding effect on the gap between the traction pin and the linear bearing, thereby preventing debris from entering and causing damage to the parts, but also increases the guiding distance of the traction pin, improves the displacement accuracy, and has a good protective strengthening effect on the traction pin itself.

[0008] Preferably, it also includes a protective head, and the protective head has several groups, which are arranged in a circular array with the center of the connecting section as the center. The number, size, position, etc. of the protective heads correspond to the fixing holes on the linear bearing. When installing, the protective heads are inserted into the fixing holes to protect the screws fixing the linear bearing to prevent them from rusting and other conditions that affect the fastening reliability.

[0009] Preferably, the guide section is conical in shape, which not only guides the debris generated when the rack collides with the rack, but also improves the support for the traction pin by increasing the strength of the protective plug.

[0010] Preferably, the power structure includes a motor, a flange, and a movable pressure block. The flange is arranged on the rotating shaft of the motor, and the flange is arranged concentrically with the rotating shaft of the motor. The movable pressure block is arranged on the flange near the edge. In the non-traction state, the motor drives the flange to rotate, and the movable pressure block thereon rotates accordingly until it is at the lowest position. At this time, the traction pin pressure plate in the liftable traction pin structure moves downward, the spring is compressed, and the traction pin moves downward along the linear bearing with the traction pin pressure plate; in the traction state, the motor drives the flange to rotate in the opposite direction, and the movable pressure block thereon rotates accordingly until it is at the highest position. At this time, the spring rebounds under the action of its own elastic force, pushing the traction pin pressure plate upward. At this time, the traction pin moves upward along the linear bearing and is inserted into the corresponding traction hole. It has a simple structure, is easy to operate, and has wide applicability.

[0011] Preferably, an automatic navigation tractor adopts the traction pin mechanism with a protective plug.

[0012] Compared with the prior art, the beneficial technical effects of the utility model are as follows:

[0013] 1) A protective plug is provided in the traction pin mechanism, which not only effectively blocks the gap between the traction pin and the linear bearing, and prevents foreign objects caused by collision and other reasons from entering during the traction process to cause damage to parts, thereby increasing the service life of the mechanism and reducing maintenance costs, but also plays a good reinforcing role on the traction pin to avoid wear or deformation, thereby affecting the smooth progress of the traction work; 2) A protective head is provided to effectively protect the fixing screws in the traction pin mechanism to avoid rust and corrosion that affect their fastening reliability, thereby affecting the progress of the traction work; 3) The structure is simple, easy to use, low production cost, and has wide applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional diagram of a traction pin mechanism;

[0015] Figure 2 A cross-sectional view of the protective plug;

[0016] Figure 3 A three-dimensional diagram of an automatic navigation tractor equipped with a traction pin mechanism.

[0017] Markings in the accompanying drawings: fixed seat 1, liftable traction pin structure 2, traction pin 21, linear bearing 22, traction pin pressure plate 23, guide rod 24, spring 25, protective plug 26, guide section 261, connecting section 262, protective head 263, guide hole 264, power structure 3, motor 31, flange 32, movable pressure block 33. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the utility model clearer, the device proposed in the utility model is further described in detail below in combination with the accompanying drawings and specific implementation methods. According to the following description, the advantages and features of the utility model will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the implementation method of the utility model. In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated by the accompanying drawings of this specification are only used to match the content disclosed in the specification, so that people familiar with this technology can understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so it has no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the utility model can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the utility model.

[0019] Embodiment 1

[0020] like Figure 1 The figure shows a three-dimensional diagram of the utility model, which includes a fixed seat 1, a liftable traction pin structure 2, and a power structure 3. The liftable traction pin structure 2 is arranged on the fixed seat 1, and the power structure 3 is arranged on the side of the fixed seat 1; wherein, the liftable traction pin structure 2 includes a traction pin 21, a linear bearing 22, a traction pin pressure plate 23, a guide rod 24, a spring 25, and a protective plug 26. The traction pin 21 is arranged in the linear bearing 22, and the traction pin pressure plate 23 is fixed at the upper and lower ends of the traction pin 21. One end of the guide rod 24 is arranged in a hole at one end of the traction pin 21 close to the traction pin pressure plate 23, and the other end is fixed on the fixed seat 1. The spring 25 is arranged on the outside of the guide rod 24, and the protective plug 26 is arranged on the traction pin 21 and is located at the flange end of the linear bearing 22.

[0021] like Figure 2 The figure shows a cross-sectional view of the protection plug 26 , which includes a guide section 261 and a connecting section 262 . The guide section 261 is arranged above the connecting section 262 . A guide hole 264 penetrating the guide section 261 and the connecting section 262 is provided in the middle of the protection plug 26 .

[0022] It also includes a protective head 263, which has several groups and is arranged in a circular array below the connecting section 262 with the center of the connecting section 262 as the center. In this embodiment, there are four fixing holes on the linear bearing 2, and there are four corresponding protective heads 263.

[0023] The guide section 261 is conical in shape.

[0024] The power structure 3 includes a motor 31, a flange 32, and a movable pressure block 33. The flange 32 is arranged on the rotating shaft of the motor 31, and the flange 32 is arranged concentrically with the rotating shaft of the motor 31. The movable pressure block 33 is arranged near the edge of the flange 32. The movable pressure block 33 in this embodiment is a roller structure, and a polyurethane lining is provided on its outer surface, so as to effectively avoid the generation of metal debris when the traction pin pressure plate 23 is pressed down.

[0025] Embodiment 2

[0026] An automatic navigation tractor, such as Figure 3 As shown, the traction pin mechanism with a protective plug is adopted.

[0027] The tractor automatically drives to the designated position under the shelf. At this time, the motor 31 in the power structure 3 drives the flange 32 to rotate, and the movable pressure block 33 rotates accordingly until it is at the uppermost position. At this time, the spring 25 in the liftable traction pin structure 2 rebounds under its own elastic force, pushing the traction pin pressure plate 23 upward, and the traction pin 21 moves upward along the linear bearing 22 and is inserted into the corresponding traction hole on the shelf. The tractor automatically tows the shelf to the unloading area.

[0028] When the tractor is unloading, the motor 31 in the power structure 3 drives the flange 32 to rotate in reverse, and the movable pressure block 33 thereon rotates accordingly until it is at the lowest position. At this time, the traction pin pressure plate 23 in the liftable traction pin structure 2 moves downward under the pressure of the movable pressure block 33, the spring 25 is compressed, and the traction pin 21 moves downward along the linear bearing 22 with the traction pin pressure plate 23, leaving the traction hole of the shelf, completing the automatic unloading work.

[0029] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0030] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A traction pin mechanism with a protective plug, characterized in that: The invention comprises a fixed seat (1), a liftable traction pin structure (2), and a power structure (3), wherein the liftable traction pin structure (2) is arranged on the fixed seat (1), and the power structure (3) is arranged on the side of the fixed seat (1); wherein the liftable traction pin structure (2) comprises a traction pin (21), a linear bearing (22), a traction pin pressure plate (23), a guide rod (24), a spring (25), and a protective plug (26), wherein the traction pin (21) is arranged in the linear bearing (22), the traction pin pressure plate (23) is fixed at the upper and lower ends of the traction pin (21), one end of the guide rod (24) is arranged in a hole of the traction pin (21) close to one end of the traction pin pressure plate (23), and the other end is fixed on the fixed seat (1), the spring (25) is arranged on the outside of the guide rod (24), and the protective plug (26) is arranged on the traction pin (21) and is located at the flange end of the linear bearing (22).

2. The traction pin mechanism with a protective plug according to claim 1, characterized in that: The protective plug (26) comprises a guide section (261) and a connecting section (262); the guide section (261) is arranged above the connecting section (262); a guide hole (264) penetrating the guide section (261) and the connecting section (262) is provided at a middle position of the protective plug (26).

3. The traction pin mechanism with a protective plug according to claim 2, characterized in that: It also includes a protective head (263), which has a plurality of groups and is arranged in a circular array below the connecting section (262) with the center of the connecting section (262) as the center.

4. The traction pin mechanism with a protective plug according to claim 2, characterized in that: The guide section (261) is configured in a conical shape.

5. The traction pin mechanism with a protective plug according to claim 1, characterized in that: The power structure (3) comprises a motor (31), a flange (32), and a movable pressure block (33); the flange (32) is arranged on the rotating shaft of the motor (31), and the flange (32) is arranged concentrically with the rotating shaft of the motor (31); and the movable pressure block (33) is arranged on the flange (32) near the edge.

6. An automatic navigation tractor, characterized in that: A traction pin mechanism with a protective plug as described in any one of claims 1 to 5 is used.

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