Rotary joint of intelligent robot
By using an insert fixing cover to connect the rotating rod in the robot's rotary joint, and employing fastening bolts and servo motor drive, the cumbersome assembly problem in the existing technology is solved, enabling convenient disassembly and assembly of the rotating arm and improving the convenience of maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU XICHEN INTELLIGENT TECHNOLOGY CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-05-12
AI Technical Summary
The assembly process of existing robot rotary joints is cumbersome and inconvenient for maintenance and repair.
The rotating arm is connected to the rotating rod by inserting a fixing cover. The lower mounting sleeve and the upper mounting sleeve are fixed by fastening bolts. The rotating rod is driven to rotate by a servo motor, which enables simple disassembly and assembly of the rotating arm.
It simplifies the disassembly and assembly process of the rotating arm, making maintenance and repair work more convenient.
Smart Images

Figure CN224223931U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of robotics technology, and more specifically, to an intelligent robot rotary joint. Background Technology
[0002] With continuous technological advancements, intelligent robots are widely used in various fields such as handling, welding, painting, assembly, and sorting. Rotary joints are the core components that enable robots to perform rotational movements. For example, the patent application number 202110398197.9 proposes an external multi-speed rotary joint for a drilling robot, comprising multi-layered worm gears, a rotor, balls, and a worm. The multi-layered worm gear consists of a cylinder and at least two gears mounted on the cylinder. Each gear corresponds to a rotor that rotates relative to the cylinder. The rotor's shell base is equipped with a worm that meshes with the external teeth of the gears. The inner wall of the gears has an inner raceway that rotates with the balls. The shell base has an outer raceway that matches the inner raceway on its corresponding surface.
[0003] The assembly of adjacent rotating parts in existing robot rotary joints is cumbersome and inconvenient for maintenance and repair. Therefore, we propose an intelligent robot rotary joint to improve this. Utility Model Content
[0004] The main purpose of this utility model is to provide an intelligent robot rotary joint that can effectively solve the problem that the assembly operation of adjacent rotating parts of the robot rotary joint is cumbersome and inconvenient for maintenance and repair.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A rotary joint for an intelligent robot includes a connecting arm, a first mounting plate mounted on the top of the connecting arm, support plates mounted on both sides of the upper surface of the first mounting plate, a rotary connecting mechanism provided on the two support plates, a second mounting plate mounted on one end of the rotary connecting mechanism, and a rotary arm mounted on the upper surface of the second mounting plate.
[0007] Preferably, the rotating connection mechanism includes a servo motor and a mounting box. The servo motor is mounted on one side surface of one of the support plates, and the mounting box is mounted on one side surface of the other support plate. A rotating rod is mounted on the output end of the servo motor.
[0008] Preferably, one end of the rotating rod passes through two support plates in sequence and the end is located inside the mounting box, where a bearing that cooperates with the rotating rod is installed.
[0009] Preferably, the rotating rod is provided with a lower mounting sleeve and an upper mounting sleeve on its upper and lower sides, respectively, located between the two support plates. The rotating rod, the lower mounting sleeve and the upper mounting sleeve are all provided with mounting grooves at corresponding positions inside.
[0010] Preferably, a rod is installed inside the mounting groove located inside the lower mounting sleeve, and a fixing cover is installed inside the mounting groove located inside the upper mounting sleeve.
[0011] Preferably, the fixing cover is fitted onto the outside of the insertion rod, and both the insertion rod and the fixing cover pass through the mounting groove located on the rotating rod.
[0012] Preferably, fastening bolts are movably installed on one side of both the lower mounting sleeve and the upper mounting sleeve. The lower mounting sleeve, the upper mounting sleeve, the insert rod, and the fixing cover all have threaded holes that mate with the fastening bolts. Both fastening bolts are inserted into the insert rod and the fixing cover.
[0013] Preferably, the inner walls of both sides of the fixing cover are provided with slide bars, and the two sides of the insertion rod are provided with sliding grooves that slide with the slide bars. A connecting block is installed on the upper side of the outer surface of the upper mounting sleeve, and the top of the connecting block is fixedly connected to the bottom of the second mounting plate.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] The fixing cover is inserted through the rotating rod and into the mounting groove inside the lower mounting sleeve. Two fastening bolts are then used to fix the rod in place within the fixing cover and the fixing cover inside the lower and upper mounting sleeves. This connects the lower and upper mounting sleeves to the rotating rod. When the rotating arm needs to be disassembled, the fastening bolts are removed to separate the upper and lower mounting sleeves. The operation is simpler and more convenient, facilitating maintenance. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0017] Figure 2 This is a schematic diagram of the specific structure of this utility model after rotation;
[0018] Figure 3 This is a front view of the present invention;
[0019] Figure 4 This is a side view of the present invention;
[0020] Figure 5 For the present utility model Figure 3 Schematic diagram of the three-dimensional cross-section at point AA;
[0021] Figure 6 For the present utility model Figure 4 Schematic diagram of the three-dimensional cross-section at point BB;
[0022] Figure 7 This is an exploded view of the specific structure of the rotating connection mechanism of this utility model;
[0023] Figure 8 For the present utility model Figure 7 Structural front view;
[0024] Figure 9 For the present utility model Figure 7 Structural side view;
[0025] Figure 10 For the present utility model Figure 9 A schematic diagram of the three-dimensional structure of the cross-section at point CC.
[0026] In the diagram: 1. Connecting arm; 2. First mounting plate; 3. Support plate; 4. Rotating connecting mechanism; 401. Servo motor; 402. Rotating rod; 403. Lower mounting sleeve; 404. Upper mounting sleeve; 405. Mounting box; 406. Bearing; 407. Mounting groove; 408. Insert rod; 409. Fixing cover; 410. Fastening bolt; 411. Threaded hole; 412. Sliding bar; 413. Sliding groove; 414. Connecting block; 5. Second mounting plate; 6. Rotating arm. Detailed Implementation
[0027] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.
[0028] like Figure 1 , Figure 2 The diagram shows a rotary joint for an intelligent robot, including a connecting arm 1. A first mounting plate 2 is mounted on the top of the connecting arm 1. Support plates 3 are mounted on both sides of the upper surface of the first mounting plate 2. The two support plates 3 are provided with a rotary connecting mechanism 4. A second mounting plate 5 is mounted on one end of the rotary connecting mechanism 4. A rotary arm 6 is mounted on the upper surface of the second mounting plate 5.
[0029] like Figures 2 to 10As shown, the rotating connection mechanism 4 includes a servo motor 401 and a mounting box 405. The servo motor 401 is mounted on one side surface of one of the support plates 3, and the mounting box 405 is mounted on one side surface of the other support plate 3. A rotating rod 402 is mounted on the output end of the servo motor 401. One end of the rotating rod 402 passes through both support plates 3 sequentially, and its end is located inside the mounting box 405. A bearing 406 that cooperates with the rotating rod 402 is installed inside the mounting box 405. A lower mounting sleeve 403 and an upper mounting sleeve 404 are respectively mounted on the upper and lower sides of the rotating rod 402 located between the two support plates 3. Mounting grooves 407 are opened at corresponding positions inside the rotating rod 402, the lower mounting sleeve 403, and the upper mounting sleeve 404. An insert rod 408 is installed inside the mounting groove 407 inside the lower mounting sleeve 403, and an insert rod 408 is installed inside the upper mounting sleeve 404. A fixing cover 409 is installed inside the mounting groove 407. The fixing cover 409 is sleeved on the outside of the insertion rod 408. Both the insertion rod 408 and the fixing cover 409 pass through the mounting groove 407 located on the rotating rod 402. Fastening bolts 410 are movably installed on one side of the lower mounting sleeve 403 and the upper mounting sleeve 404. The lower mounting sleeve 403, the upper mounting sleeve 404, the insertion rod 408 and the fixing cover 409 are all provided with threaded holes 411 that mate with the fastening bolts 410. The two fastening bolts 410 are inserted into the insertion rod 408 and the fixing cover 409. Sliding strips 412 are provided on the inner walls of both sides of the fixing cover 409. Sliding grooves 413 that slide with the sliding strips 412 are provided on the surface of both sides of the insertion rod 408. A connecting block 414 is installed on the upper side of the outer surface of the upper mounting sleeve 404. The top of the connecting block 414 is fixedly connected to the bottom of the second mounting plate 5.
[0030] By utilizing the cooperation between the insertion rod 408 and the fixed cover 409, and then using the fastening bolt 410 for fixation, the lower mounting sleeve 403, the upper mounting sleeve 404, and the rotating rod 402 can be combined together. The upper mounting sleeve 404 is connected to the rotating arm 6 using the connecting block 414. When driven by the servo motor 401, the rotating arm 6 can be controlled to rotate. The disassembly operation of the rotating arm 6 is simpler. Through the cooperation between the slide bar 412 and the sliding groove 413, a limiting effect can be played during the process of installing the fixed cover 409 to the outside of the insertion rod 408, so that the fixed cover 409 will not shift in position. The connection between the fixed cover 409 and the insertion rod 408 is more stable and will not wobble.
[0031] The working principle of the rotary joint of this intelligent robot:
[0032] When assembling the rotating arm 6 and the connecting arm 1, firstly, insert the rod 408 on the lower mounting sleeve 403 into the mounting groove 407 on the rotating rod 402, so that the lower mounting sleeve 403 is fitted onto the rod body of the rotating rod 402. Then, use the servo motor 401 to control the rotation of the rotating rod 402, rotating the lower mounting sleeve 403 to below the rotating rod 402. Insert the fixing cover 409 through the rotating rod 402 into the mounting groove 407 inside the lower mounting sleeve 403. The rod 408 will be located inside the fixing cover 409. Then, install the two fastening bolts 410. The insertion rod 408 can be fixed in the position of the fixing cover 409 and the fixing cover 409 inside the lower mounting sleeve 403 and the upper mounting sleeve 404. The fastening bolt 410 is fixed with a nut, so that the lower mounting sleeve 403, the upper mounting sleeve 404 and the rotating rod 402 can be connected together. The rotating rod 402 is driven to rotate by the servo motor 401, which can drive the rotating arm 6 to rotate accordingly. When it is necessary to disassemble the rotating arm 6, the fastening bolt 410 can be removed, and the upper mounting sleeve 404 and the lower mounting sleeve 403 can be separated. The operation is simpler and more convenient, and maintenance work is easier.
[0033] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.
Claims
1. A rotary joint for an intelligent robot, comprising a connecting arm (1), characterized in that: The top of the connecting arm (1) is equipped with a first mounting plate (2), and support plates (3) are installed on both sides of the upper surface of the first mounting plate (2). The two support plates (3) are provided with a rotating connection mechanism (4). A second mounting plate (5) is installed at one end of the rotating connection mechanism (4), and a rotating arm (6) is installed on the upper surface of the second mounting plate (5).
2. The intelligent robot rotary joint according to claim 1, characterized in that: The rotating connection mechanism (4) includes a servo motor (401) and a mounting box (405). The servo motor (401) is mounted on one side surface of one of the support plates (3), and the mounting box (405) is mounted on one side surface of the other support plate (3). A rotating rod (402) is mounted on the output end of the servo motor (401).
3. The intelligent robot rotary joint according to claim 2, characterized in that: One end of the rotating rod (402) passes through two support plates (3) in sequence and the end is located inside the mounting box (405). The mounting box (405) is equipped with a bearing (406) that cooperates with the rotating rod (402).
4. The intelligent robot rotary joint according to claim 3, characterized in that: The rotating rod (402) is located between the two support plates (3) and has a lower mounting sleeve (403) and an upper mounting sleeve (404) installed on its upper and lower sides respectively. The rotating rod (402), the lower mounting sleeve (403) and the upper mounting sleeve (404) are all provided with mounting grooves (407) at corresponding positions inside.
5. The intelligent robot rotary joint according to claim 4, characterized in that: A rod (408) is installed inside the mounting groove (407) located inside the lower mounting sleeve (403), and a fixing cover (409) is installed inside the mounting groove (407) located inside the upper mounting sleeve (404).
6. The intelligent robot rotary joint according to claim 5, characterized in that: The fixing cover (409) is sleeved on the outside of the insertion rod (408), and both the insertion rod (408) and the fixing cover (409) pass through the mounting groove (407) located on the rotating rod (402).
7. A rotary joint for an intelligent robot according to claim 6, characterized in that: Fastening bolts (410) are movably installed on one side of both the lower mounting sleeve (403) and the upper mounting sleeve (404). The lower mounting sleeve (403), the upper mounting sleeve (404), the insert rod (408), and the fixing cover (409) are all provided with threaded holes (411) that mate with the fastening bolts (410). Both fastening bolts (410) are inserted into the insert rod (408) and the fixing cover (409).
8. The intelligent robot rotary joint according to claim 7, characterized in that: The inner walls of both sides of the fixed cover (409) are provided with slide bars (412), and the two sides of the insert rod (408) are provided with sliding grooves (413) that slide with the slide bars (412). The upper surface of the outer surface of the upper mounting sleeve (404) is provided with a connecting block (414), and the top of the connecting block (414) is fixedly connected to the bottom of the second mounting plate (5).