Shaft head lock structure of all-terrain wheeled robot

Abstract

The shaft head lock structure of the all-terrain wheeled robot comprises a hub sleeve, a driving shaft, a key pressing strip and a key block, the driving shaft is arranged in an inner cavity of the hub sleeve, the front end and the rear end of the inner cavity of the hub sleeve are rotationally connected with the driving shaft through bearings respectively, and a through opening is formed in the center of the front end of the hub sleeve. Grooves are symmetrically formed in the front end face of the hub sleeve and located on the two sides of the through opening. The front end of the driving shaft extends into the through opening, positioning grooves corresponding to the two grooves in position are transversely formed in the front end face of the driving shaft, a key block is embedded in the positioning grooves, the two ends of the key block extend into the two grooves respectively, and the key block is pressed and positioned through a key pressing strip on the front end face of the hub sleeve. The two ends of the key pressing strip are detachably fixed to the front end face of the hub sleeve through bolts, torque is transmitted between the driving shaft and the hub sleeve through the key block, during unlocking, the butterfly bolts are detached, then the key strip is moved out, and finally the key block is taken down, so that the hub sleeve idles around the driving shaft, operation is easy and convenient, and the service life of the hub sleeve is prolonged. And the dragging or pushing requirements of the all-terrain wheeled robot are met.

Description

Technical Field

[0001] The utility model relates to an axle head lock structure of an all-terrain wheeled robot, in particular to an axle head lock structure applied to the all-terrain wheeled robot. Background Art

[0002] Currently, all-terrain wheeled robots need to be towed or pushed when people cannot walk independently in specific environments or emergency situations. This is particularly important when moving or transferring all-terrain vehicles quickly. Because the running devices (such as tires and wheels) of existing all-terrain vehicles are fixedly connected to the transmission devices (such as chains and gears), the tires will drive the transmission devices to rotate when the all-terrain vehicle is towed, which will cause resistance to be generated during the towing process of the all-terrain vehicle, affecting its efficiency in emergency situations or fast-moving scenarios. Although the axle head lock in the existing technology is simple to operate, it is complex in structure, has a large number of various parts, and has high processing and manufacturing costs. Utility Model Content

[0003] In response to the above problems, the utility model discloses an axle head lock structure for an all-terrain wheeled robot, in which a key block is used to transmit torque between the drive shaft and the hub sleeve. By removing the key block, the lock can be unlocked, ensuring that the tire can idle.

[0004] The specific technical solutions are as follows:

[0005] A shaft head lock structure for an all-terrain wheeled robot includes a wheel hub sleeve, a drive shaft, a pressure key strip, and a key block. The drive shaft is arranged in the inner cavity of the wheel hub sleeve, and the front and rear ends of the wheel hub sleeve inner cavity are respectively rotatably connected to the drive shaft through bearings. A through opening is provided in the front center of the wheel hub sleeve, and grooves are symmetrically provided on the front end surface of the wheel hub sleeve on both sides of the through opening; the front end of the drive shaft extends into the through opening, and a positioning groove corresponding to the position of the two grooves is laterally provided on the front end surface of the drive shaft, and the key block is embedded in the positioning groove, and the two ends of the key block extend into the two grooves respectively, and the key block is pressed and positioned by the pressure key strip on the front end surface of the wheel hub sleeve, and the two ends of the pressure key strip are detachably fixed to the front end surface of the wheel hub sleeve by bolts, so as to realize the transmission of torque between the drive shaft and the wheel hub sleeve through the key block.

[0006] Furthermore, a spacer sleeve is provided on the drive shaft between the two bearings, and the two ends of the spacer sleeve are fitted with the inner rings on the inside of the two bearings, and a circle of grooves is provided at the front and rear ends of the drive shaft respectively, and a retaining spring is respectively provided in the two grooves, and the two retaining springs are respectively pressed against the inner rings on the outside of the two bearings to achieve the positioning of the drive shaft and the two bearings.

[0007] Furthermore, a step is provided on the inner wall of the front end of the hub sleeve for placing the front end bearing; a bearing cover is installed on the rear end of the hub sleeve through fasteners, and the bearing cover is sleeved on the drive shaft, and one end of the bearing cover presses and fixes the outer ring of the rear end bearing to realize the positioning of the hub sleeve on the drive shaft.

[0008] Furthermore, the front end surface of the drive shaft is flush with the front end surface of the hub sleeve.

[0009] Furthermore, the direction of the key pressing strip is perpendicular to the direction of the key block, and a slot for clamping the key block is provided on the key pressing strip.

[0010] Furthermore, the bolt is a butterfly bolt.

[0011] The beneficial effects of the present invention are as follows:

[0012] Compared with the existing technology, the utility model has a simple structure and is easy to process. A key block is used to transmit torque between the drive shaft and the wheel hub sleeve, and the key strip is fixed to the wheel hub sleeve with two butterfly bolts. When unlocking is required, the butterfly bolts are removed, the key strip is moved out, and finally the key block is removed, so that the wheel hub sleeve can idle around the drive shaft. The operation is simple and convenient, meeting the towing or pushing needs of the all-terrain wheeled robot. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the present utility model.

[0014] Figure 2 It is the main view of the utility model.

[0015] Explanation of the accompanying drawings: wheel hub sleeve 1, through opening 101, step 102, groove 103, drive shaft 2, positioning groove 201, groove 202, key strip 3, slot 301, bearing cover 4, spacer sleeve 5, bearing 6, key block 7, retaining spring 8, butterfly bolt 9. DETAILED DESCRIPTION

[0016] To make the technical solution of the present invention clearer and more specific, the present invention is further described below with reference to the accompanying drawings. Any equivalent replacement of the technical features of the present invention and any solution derived from conventional reasoning shall fall within the scope of protection of the present invention. The fixed connections and fixed arrangements mentioned in the present invention are all common connection methods in the mechanical field, including welding, bolt and nut connections, and screw connections.

[0017] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0018] See also Figure 1-2 The present embodiment provides an axle head lock structure of an all-terrain wheeled robot, comprising a wheel hub sleeve 1, a drive shaft 2, a key bar 3, and a key block 7. The drive shaft 2 is arranged in the inner cavity of the wheel hub sleeve 1, and the front and rear ends of the inner cavity of the wheel hub sleeve 1 are rotatably connected to the drive shaft 2 through bearings 6. A through-hole 101 is provided at the center of the front end of the wheel hub sleeve 1, and grooves 103 are symmetrically provided on both sides of the through-hole 101 on the front surface of the wheel hub sleeve 1; the front end of the drive shaft 2 extends into the through-hole 101, and the front end surface of the drive shaft 2 is flush with the front end surface of the wheel hub sleeve 1, and the drive shaft 2 is rotated. A positioning groove 201 is transversely defined on the front face, corresponding to the positions of the two grooves 103. A key block 7 is embedded in the positioning groove 201, with both ends of the key block 7 extending into the two grooves 103. The key block 7 is pressed and positioned by a key pressing strip 3 on the front face of the hub sleeve 1. The direction of the key pressing strip 3 is perpendicular to the direction of the key block 7, and the key pressing strip 3 is provided with a slot 301 for engaging the key block 7. The two ends of the key pressing strip 3 are removably fixed to the front face of the hub sleeve 1 by bolts, thereby transmitting torque between the drive shaft 2 and the hub sleeve 1 through the key block 7. In this embodiment, the bolts used are butterfly bolts 9 that can be directly tightened manually, facilitating disassembly and installation. To unlock, the butterfly bolts 9 are removed, the key strip is removed, and finally the key block 7 is removed, allowing the hub sleeve 1 to rotate idly around the drive shaft 2, thus meeting the requirements of towing or pushing the all-terrain wheeled robot.

[0019] A spacer sleeve 5 is provided on the drive shaft 2 between the two bearings 6. The two ends of the spacer sleeve 5 are fitted with the inner rings of the two bearings 6, and a circle of grooves 202 are respectively provided at the front and rear ends of the drive shaft 2. A retaining spring 8 is respectively provided in the two grooves 202. The two retaining springs 8 are respectively pressed against the inner rings of the outer sides of the two bearings 6, and the bearings 6 are pressed and positioned by cooperating with the spacer sleeve 5 to achieve the positioning of the drive shaft 2 and the two bearings 6.

[0020] A step 102 for placing the front end bearing 6 is provided on the inner wall of the front end of the hub sleeve 1; a bearing 6 cover 4 is installed on the rear end of the hub sleeve 1 through fasteners, and the bearing 6 cover 4 is sleeved on the drive shaft 2, and one end of the bearing 6 cover 4 presses and fixes the outer ring of the rear end bearing 6 to realize the positioning of the hub sleeve 1 on the drive shaft 2.

[0021] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An axle head lock structure of an all-terrain wheeled robot, characterized in that: The invention comprises a hub sleeve (1), a drive shaft (2), a key bar (3), and a key block (7); the drive shaft (2) is arranged in the inner cavity of the hub sleeve (1); the front and rear ends of the inner cavity of the hub sleeve (1) are rotatably connected to the drive shaft (2) through bearings (6), a through opening (101) is provided at the center of the front end of the hub sleeve (1), and grooves (103) are symmetrically provided on both sides of the through opening (101) on the front surface of the hub sleeve (1); the front end of the drive shaft (2) extends into the through opening (101), and the drive shaft ( A positioning groove (201) corresponding to the position of the two grooves (103) is transversely opened on the front end surface of the hub sleeve (2), and the key block (7) is embedded in the positioning groove (201). The two ends of the key block (7) extend into the two grooves (103) respectively. The key block (7) is pressed and positioned by the key pressing strip (3) on the front end surface of the hub sleeve (1). The two ends of the key pressing strip (3) are detachably fixed to the front end surface of the hub sleeve (1) by bolts, so that torque is transmitted between the drive shaft (2) and the hub sleeve (1) through the key block (7).

2. The axle head lock structure of the all-terrain wheeled robot according to claim 1, characterized in that: A spacer sleeve (5) is provided on the drive shaft (2) between the two bearings (6), and both ends of the spacer sleeve (5) are fitted with the inner rings of the two bearings (6). A circle of grooves (202) is respectively provided at the front and rear ends of the drive shaft (2), and a retaining spring (8) is respectively provided in the two grooves (202). The two retaining springs (8) are respectively pressed against the inner rings of the outer sides of the two bearings (6), thereby realizing the positioning of the drive shaft (2) and the two bearings (6).

3. The axle head lock structure of the all-terrain wheeled robot according to claim 2, characterized in that: A step (102) for placing the front end bearing (6) is provided on the inner wall of the front end of the hub sleeve (1); a bearing cover (4) is installed on the rear end of the hub sleeve (1) via a fastener, the bearing cover (4) is sleeved on the drive shaft (2), and one end of the bearing cover (4) is pressed and fixed against the outer ring of the rear end bearing (6), thereby realizing the positioning of the hub sleeve (1) on the drive shaft (2).

4. The axle head locking structure of an all-terrain wheeled robot according to claim 1, characterized in that: The front end surface of the drive shaft (2) is flush with the front end surface of the hub sleeve (1).

5. The axle head locking structure of the all-terrain wheeled robot according to claim 1, characterized in that: The direction of the key pressing strip (3) is perpendicular to the direction of the key block (7), and a slot (301) for clamping the key block (7) is provided on the key pressing strip (3).

6. The axle head locking structure of the all-terrain wheeled robot according to claim 1, characterized in that: The bolt is a butterfly bolt (9).

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