Bidirectional transmission mechanism of robot

Abstract

The bidirectional transmission mechanism comprises a square frame, a driving motor is fixedly mounted on the upper surface of the square frame through bolts, a mounting seat is connected to the outer surface of a driving shaft of the driving motor through threads, and inserting openings are formed in the left side and the right side of the square frame. A positioning rod is inserted into the insertion opening, the bottom of the positioning rod is clamped into a positioning groove, the positioning groove is formed in the inner side surface of the lower end of the square frame, the inner side surface of the upper end of the square frame is in threaded connection with a threaded plug, and the threaded plug is extruded on the upper surface of the positioning rod; a linear bearing is arranged on the surface of the inner side of the mounting seat, a positioning rod of the linear bearing is mounted in the square frame in a penetrating manner, the upper end of the positioning rod is locked and fixed through a threaded plug, mounting is convenient, lubricating oil is directly squeezed in to lubricate in a convex annular extrusion sleeve during lubricating, sealing is achieved through a rubber sealing ring, the lubricating structure is simple, the size is reduced, and the service life is prolonged. The equipment cost is low.

Description

Technical Field

[0001] This utility model relates to the field of bidirectional transmission mechanisms for robots, and more specifically, to a bidirectional transmission mechanism for a robot. Background Technology

[0002] A robot is an intelligent machine capable of semi-autonomous or fully autonomous operation. It can perform tasks such as work or movement through programming and automatic control. Robots are divided into two main categories: industrial robots and special-purpose robots. Industrial robots are multi-jointed manipulators or multi-degree-of-freedom robots designed for industrial applications, while special-purpose robots are robots that serve special tasks, such as explosion-proof robots, mine-clearing robots, underground exploration robots, etc. In robots, the robotic arm is an important transmission component that bears various loads. However, the robotic arm has poor stability when making lifting and adjustment adjustments. It is prone to vibration during lifting and adjustment, which can cause products to fall off and cause product damage.

[0003] Among its existing technical patents, such as the one authorized by publication number CN219504819U, this utility model discloses a robot mechanical transmission structure, including a shell, a motor mounted on the top of the shell, and a screw fixedly connected to one end of the motor's output shaft. A mounting base is threaded onto the outer wall of the screw, and stabilizing grooves are evenly spaced on the top of the mounting base. Ball bearings are evenly spaced on the inner wall of the stabilizing grooves. This robot mechanical transmission structure, through the setting of the stabilizing rod, increases the stability of the robotic arm during lifting and lowering. Simultaneously, the multiple ball bearings reduce the friction between the robotic arm and the stabilizing rod during lifting and lowering, preventing the stabilizing rod from becoming uneven due to excessive friction, thus affecting the stability of the robotic arm during lifting and lowering, ensuring the service life of the stabilizing rod, and consequently ensuring the stability of the robot mechanical transmission structure.

[0004] In the aforementioned patent, a stabilizer bar structure is used. However, the stabilizer bar is inconvenient to install with the mounting base and the housing. When lubricating, a lubrication mechanism is used to lubricate the lifting and sliding. The separate lubrication mechanism increases the size of the robot drive components and increases the cost. Utility Model Content

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a bidirectional transmission mechanism for a robot. The positioning rod is installed in a square frame by inserting it in, and the upper end can be locked and fixed by a threaded plug. It is easy to install, and lubrication can be achieved by directly squeezing lubricating oil into the convex annular extrusion sleeve and sealing it with a rubber sealing ring. Its lubrication structure is simple, reduces volume, and has low equipment cost.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A bidirectional transmission mechanism for a robot includes a square frame. A drive motor is bolted to the upper surface of the square frame. A mounting base is threadedly connected to the outer surface of the drive shaft of the drive motor. Insertion ports are provided on the left and right sides of the square frame, and positioning rods are inserted through these ports. The bottom of the positioning rod is engaged in a positioning groove, which is located on the lower inner surface of the square frame. A threaded plug is threaded to the upper inner surface of the square frame, pressing against the upper surface of the positioning rod. A linear bearing is provided on the inner surface of the mounting base, and the positioning rod is inserted into the linear bearing within the mounting base. The positioning rod is installed within the square frame using an insertion method, and its upper end is locked and fixed by the threaded plug. Installation is convenient, and lubrication can be achieved by directly squeezing lubricating oil into the convex annular compression sleeve and sealing it with a rubber sealing ring. Its lubrication structure is simple, reduces volume, and lowers equipment cost.

[0008] Furthermore, the upper inner surface of the mounting base is connected to a convex annular extrusion sleeve via a thread, and the lower surface of the convex annular extrusion sleeve is pressed against the upper surface of the linear bearing.

[0009] Furthermore, a rubber sealing ring is snapped onto the inner surface of the convex annular extrusion sleeve.

[0010] Furthermore, the surface of the convex annular extrusion sleeve is provided with a positioning ring groove, and the outer surface of the rubber sealing ring is engaged with the inner surface of the positioning ring groove of the convex annular extrusion sleeve.

[0011] Furthermore, a notch is provided on the outer end surface of the positioning ring groove of the convex annular extrusion sleeve.

[0012] Furthermore, the upper surface of the thread plug is provided with a hexagonal groove, and the upper end surface of the convex annular extrusion sleeve is provided with a hexagonal boss structure.

[0013] Furthermore, a bearing is provided on the lower inner surface of the square frame, and a convex shaft is provided on the lower surface of the drive shaft, with the outer surface of the convex shaft being snapped into and fixed to the inner surface of the bearing.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] (1) Its positioning rod is installed in the square frame by inserting it in the middle. The upper end can be locked and fixed by threaded plug. It is easy to install. When lubricating, the lubricating oil can be directly squeezed into the convex ring extrusion sleeve for lubrication. It can be sealed by the rubber sealing ring. Its lubrication structure is simple, reduces volume, and has low equipment cost. Attached Figure Description

[0016] Figure 1 This is a first schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a second schematic diagram of the overall structure of this utility model;

[0018] Figure 3 This is a schematic cross-sectional view of the overall structure of this utility model;

[0019] Figure 4 This is an enlarged view of point A in this utility model;

[0020] Figure 5 This is an enlarged view of section B of this utility model;

[0021] Figure 6 This is a partial structural diagram of the convex annular extrusion sleeve of this utility model.

[0022] Explanation of the labels in the diagram:

[0023] 1. Square frame, 2. Drive motor, 3. Drive shaft, 4. Mounting base, 5. Positioning rod, 6. Positioning groove, 7. Thread plug, 8. Linear bearing, 9. Convex annular extrusion sleeve, 10. Rubber sealing ring, 90. Positioning ring groove, 11. Groove, 70. Hexagonal groove, 31. Bearing, 30. Convex shaft. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] Please see Figure 1-6 A bidirectional transmission mechanism for a robot includes a square frame 1. A drive motor 2 is bolted to the upper surface of the square frame 1. A mounting base 4 is threaded to the outer surface of the drive shaft 3 of the drive motor 2. Insertion ports are provided on the left and right sides of the square frame 1, and positioning rods 5 are inserted through these ports. The bottom of the positioning rods 5 is engaged in a positioning groove 6, which is located on the lower inner surface of the square frame 1. A threaded plug 7 is threaded to the upper inner surface of the square frame 1, pressing against the upper surface of the positioning rods 5. A linear bearing 8 is provided on the inner surface of the mounting base 4, and the positioning rods 5 are inserted into the linear bearing 8 within the mounting base 4. The positioning rods are installed in the square frame by insertion, and the upper end is locked in place by the threaded plug. This method is convenient to install, and lubrication can be achieved by directly squeezing lubricating oil into the convex annular extrusion sleeve and sealing it with a rubber sealing ring. This simple lubrication structure reduces volume and lowers equipment cost.

[0027] The upper inner surface of the mounting base 4 is connected to a convex annular extrusion sleeve 9 by a thread. The lower surface of the convex annular extrusion sleeve 9 presses against the upper surface of the linear bearing 8. This facilitates the fixing of the linear shaft 8 by the convex extrusion sleeve 9. The linear bearing 8 can be installed by inserting it into the mounting base 4. It is locked by the upper convex extrusion sleeve 9, which is convenient for fixing and installation.

[0028] A rubber sealing ring 10 is snapped onto the inner surface of the convex annular extrusion sleeve 9; a positioning ring groove 90 is provided on the surface of the convex annular extrusion sleeve 9, and the outer surface of the rubber sealing ring 10 is snapped onto the inner surface of the positioning ring groove 90 of the convex annular extrusion sleeve 9; this facilitates the snapping and installation of the rubber sealing ring 10, which can seal the gaps. When lubricating oil is squeezed in, it can be squeezed into the gap between the convex annular extrusion sleeve 9 and the positioning rod 5, which facilitates lubrication.

[0029] A notch 11 is provided on the outer end surface of the positioning ring groove 90 of the convex annular extrusion sleeve 9. When in use, a screwdriver can be inserted along the notch 11 to pry open the rubber sealing ring 10 and push it up. Lubricating oil can be squeezed in, making maintenance convenient. After squeezing in the lubricating oil, the rubber sealing ring 10 can be pressed down to re-clamp and seal.

[0030] The upper surface of the thread plug 7 is provided with a hexagonal groove 70, and the upper end surface of the convex annular extrusion sleeve 9 is provided with a hexagonal boss structure; the convex annular extrusion sleeve 9 can be twisted by using a wrench to hold it in the hexagonal boss, which facilitates the installation and disassembly of the convex annular extrusion sleeve 9 and makes it easy to use.

[0031] A bearing 31 is provided on the lower inner surface of the square frame 1, and a convex shaft 30 is provided on the lower surface of the drive shaft 3. The outer surface of the convex shaft 30 is snapped into and fixed on the inner surface of the bearing 31. This facilitates the insertion of a support for rotation during installation. The drive shaft 3 is supported by the convex shaft 30 and rotates within the bearing 31. The support rotation is stable and the installation is convenient. The drive motor 2 is installed from the top, and its drive shaft 3 is inserted into the square frame 1. The bottom is inserted into the bearing 31 for positioning, which is convenient for installation.

[0032] When in use, the drive motor 2 drives the drive shaft 3 to rotate. The outer surface of the drive shaft 3 of the drive motor 2 is connected to the mounting base 4 by a thread. When the drive shaft 3 rotates, it can drive the mounting base 4 to move up and down. The drive motor 2 can be controlled to rotate in both directions, and it can drive in both directions.

[0033] In use, the square frame 1 has through-holes on its left and right sides, through which a positioning rod 5 is inserted. The bottom of the positioning rod 5 is engaged in a positioning groove 6, which is located on the lower inner surface of the square frame 1. The upper inner surface of the square frame 1 is connected by a threaded plug 7, which is pressed against the upper surface of the positioning rod 5. A linear bearing 8 is provided on the inner surface of the mounting base 4, and the positioning rod 5 is inserted into the linear bearing 8 within the mounting base 4. When moving, the mounting base 4 slides on the outside of the positioning rod 5 supported by the linear bearing 8, resulting in low sliding friction, stability, and secure positioning rod 5. During installation, a convex annular extrusion sleeve 9 is threaded onto the inner surface of the upper end of the mounting base 4. The lower surface of the convex annular extrusion sleeve 9 presses against the upper surface of the linear bearing 8. This facilitates the fixing of the linear shaft 8 by the convex extrusion sleeve 9. The linear bearing 8 can be installed by inserting it into the mounting base 4. It is locked by the upper convex extrusion sleeve 9, which facilitates fixing and installation. Its rubber sealing ring 10 can seal the gaps. When lubricating oil is squeezed in, it can be squeezed in along the gap between the convex annular extrusion sleeve 9 and the positioning rod 5, which facilitates lubrication. Lubrication is convenient, maintenance is convenient, the lubrication mechanism is simple, and the cost is low.

[0034] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A bidirectional transmission mechanism for a robot, comprising a square frame (1), characterized in that: The upper surface of the square frame (1) is fixedly mounted with a drive motor (2) by bolts. The outer surface of the drive shaft (3) of the drive motor (2) is connected to a mounting base (4) by threads. The left and right sides of the square frame (1) are provided with through holes, and positioning rods (5) are inserted through the through holes. The bottom of the positioning rods (5) is inserted into the positioning groove (6). The positioning groove (6) is set on the lower inner surface of the square frame (1). The upper inner surface of the square frame (1) is connected with a thread plug (7) by threads. The thread plug (7) is pressed against the upper surface of the positioning rod (5). The inner surface of the mounting base (4) is provided with a linear bearing (8). The positioning rod (5) is inserted into the linear bearing (8) in the mounting base (4).

2. The bidirectional transmission mechanism for a robot according to claim 1, characterized in that: The upper inner surface of the mounting base (4) is connected to a convex annular extrusion sleeve (9) by a thread, and the lower surface of the convex annular extrusion sleeve (9) is pressed against the upper surface of the linear bearing (8).

3. The bidirectional transmission mechanism for a robot according to claim 2, characterized in that: A rubber sealing ring (10) is snapped onto the inner surface of the convex annular extrusion sleeve (9).

4. The bidirectional transmission mechanism for a robot according to claim 3, characterized in that: The surface of the convex annular extrusion sleeve (9) is provided with a positioning ring groove (90), and the outer surface of the rubber sealing ring (10) is engaged with the inner surface of the positioning ring groove (90) of the convex annular extrusion sleeve (9).

5. The bidirectional transmission mechanism for a robot according to claim 3, characterized in that: A notch (11) is provided on the outer end surface of the positioning ring groove (90) of the convex annular extrusion sleeve (9).

6. The bidirectional transmission mechanism for a robot according to claim 2, characterized in that: The upper surface of the thread plug (7) is provided with a hexagonal groove (70), and the upper surface of the convex annular extrusion sleeve (9) is provided with a hexagonal boss structure.

7. The bidirectional transmission mechanism for a robot according to claim 1, characterized in that: The lower inner surface of the square frame (1) is provided with a bearing (31), and the lower surface of the drive shaft (3) is provided with a convex shaft (30). The outer surface of the convex shaft (30) is inserted and fixed to the inner surface of the bearing (31).

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