A special-shaped bearing for high-rotation industrial robots

Abstract

This invention discloses a high-rotation industrial robot irregular-shaped bearing, relating to the field of irregular-shaped bearing technology. It includes an outer ring and an inner ring body. The inner ring body is composed of an inner ring one and an inner ring two. The surface structure of the inner ring two is consistent with that of the inner ring one. The high-rotation industrial robot irregular-shaped bearing also includes: balls for reducing friction between the inner ring body and the outer ring, disposed between the inner ring body and the outer ring; a fixing frame for protecting the balls, composed of a retainer one and a retainer two, with retainer one disposed on the side of the balls closer to the inner ring one and retainer two disposed on the side of the balls closer to the inner ring two; and a fixing device for clamping the inner ring one and inner ring two, disposed on the outer wall of the inner ring body. By pushing the linear movement of the sliding rod, a linkage rod and a fixing key are activated, achieving one-click unlocking and allowing disassembly of the inner ring body without complex tools.

Description

Technical Field

[0001] This invention relates to the field of irregular bearing technology, specifically to an irregular bearing for high-rotation industrial robots. Background Technology

[0002] Industrial robots are multi-jointed manipulators or multi-degree-of-freedom machines widely used in industrial fields. They possess a certain degree of automation and can perform various industrial processing and manufacturing functions using their own power and control capabilities. Industrial robots are widely used in various industrial fields such as electronics, logistics, and chemicals; because robots require rotation in many parts, bearings play a crucial role.

[0003] A high-rotation industrial robot irregular-shaped bearing, patent publication number CN217713338U, relates to the field of irregular-shaped bearing technology. It includes an inner ring body and an outer ring. The inner ring body is composed of two identical inner rings joined together, connected by a connecting assembly. An outer gap, an oblique gap, and an inner gap are provided between the inner and outer rings. A rolling assembly is provided between the inner and outer rings. The beneficial effects of this patent are: because the first, second, and third balls are all rotatably connected to the support via bearings, the first, second, and third balls will not experience sliding friction with the inner and outer rings, thus reducing friction; because the inner and outer ring supports have an oblique gap, the rolling assembly is less likely to detach from the inner and outer rings, thereby meeting the requirements of industrial robot use.

[0004] The aforementioned patent features an inclined gap between the inner ring and the outer ring support, making it difficult for the rolling assembly to detach from the inner and outer rings, thus meeting the requirements of industrial robots. However, when the inner and outer rings are difficult to separate, it is necessary to replace the rough balls inside the bearing, which requires disassembling the bearing. Disassembly may require considerable force or even specialized tools, which not only increases the complexity of disassembly but may also damage other components of the bearing if not handled properly, affecting its performance. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a special-shaped bearing for high-rotation industrial robots, solving the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-rotation industrial robot irregular-shaped bearing, comprising an outer ring and an inner ring body, wherein the inner ring body is composed of an inner ring one and an inner ring two, and the surface structure of the inner ring two is consistent with the surface structure of the inner ring one; the high-rotation industrial robot irregular-shaped bearing further includes:

[0007] Ball bearings, used to reduce friction between the inner and outer rings, are positioned between the inner and outer rings.

[0008] A retainer for protecting the ball bearings, the retainer being composed of a retainer one and a retainer two, the retainer one being disposed on the side of the ball bearings closer to the inner ring one, and the retainer two being disposed on the side of the ball bearings closer to the inner ring two.

[0009] Connecting strips are used to connect the fixed frames. The connecting strips are hinged between the first retainers, and the second retainers are also hinged together by the connecting strips.

[0010] A fixing device for clamping inner ring one and inner ring two is installed on the outer wall of the inner ring.

[0011] According to the above technical solution, the fixing device includes a fixing rod, a fixing key, a rotating rod, a sliding rod, and a round pin. The fixing rod is fixedly installed on the side of the second inner ring near the first inner ring. The side of the first inner ring near the fixing rod has a square groove, and the fixing rod contacts the inner wall of the square groove. The fixing key is slidably installed on the side of the first inner ring away from the second inner ring. The side of the fixing rod near the fixing key has a fixing groove, and the fixing key contacts the inner wall of the fixing groove. The sliding rod is slidably installed on the side of the first inner ring near the fixing key. One end of the rotating rod is rotatably installed on the side of the fixing key near the sliding rod, and the other end of the rotating rod is rotatably installed on the side of the sliding rod near the fixing key. The round pin slides through the outer wall of the sliding rod. The side of the first inner ring near the fixing key has a round hole, and the shape of the round pin matches the round hole. The fixing key and the inclined surface of the fixing rod cooperate to form a self-locking structure to prevent the inner ring from accidentally separating under high speed or vibration conditions. By pushing the linear movement of the sliding rod, the rotating rod and the fixing key are linked to achieve one-click unlocking, and the inner ring can be disassembled without complicated tools.

[0012] According to the above technical solution, the fixing device further includes a sliding push plate and a key. The sliding push plate is slidably installed on the side of the inner ring one near the key. The key slides through the surface of the sliding push plate. A slot is provided on the side of the inner ring one near the key. The key contacts the inner wall of the slot. The inclined surface design of the key ensures that it is inserted into the slot in one direction, preventing the sliding push plate from retracting. The higher the bearing speed, the more firmly the inner ring one and inner ring two are fixed, completely avoiding the risk of structural loosening at high speeds.

[0013] According to the above technical solution, a first spring is provided between the fixing key and the inner ring. The first spring is provided to drive the fixing key into the fixing groove. The side of the fixing key near the fixing rod is set with an inclined surface. The inclined surface of the fixing key is to strengthen the fixing of the fixing rod. A second spring is provided between the round pin and the sliding rod. The second spring is provided to drive the round pin into the round hole to limit the sliding rod. A third spring is provided between the insert key and the sliding push plate. The third spring is provided to drive the insert key into the slot to limit the sliding push plate. The side of the insert key near the ball is set with an inclined surface. The inclined surface of the insert key is to unidirectionally limit the sliding push plate so that the sliding push plate cannot move away from the ball.

[0014] According to the above technical solution, the inner ring body surface is further provided with a control device for controlling the mutual limiting between the fixing frame and the inner ring body, and an engagement device for controlling the mutual fixing between the first retainer and the second retainer. The control device includes a push rod, a telescopic ring, a push rod, a rotating rod, a short rod, and an insert rod. The push rod is slidably installed on the side of the first inner ring near the fixing key. The telescopic ring is slidably installed on the inner wall of the first inner ring. The rotating rod is rotatably installed on the inner wall of the first inner ring. The push rod is fixedly installed on the side of the telescopic ring near the rotating rod. The inner wall of the first retainer has a sliding groove. The insert rod is slidably installed on the inner wall of the first inner ring and contacts the inner wall of the sliding groove. The short rod is fixedly installed on the side of the insert rod near the rotating rod. At high speeds, the centrifugal force releases the limiting between the first retainer and the first inner ring, thereby releasing the first retainer and improving the maximum speed capability. After the rigid connection between the first retainer and the first inner ring is released, the sliding friction resistance of the pair of balls in the retainer is reduced, significantly reducing the temperature rise when the speed is too high.

[0015] According to the above technical solution, the telescopic ring is divided into an inner arc ring and an outer arc ring. A No. 4 spring is provided between the inner arc ring and the outer arc ring. The No. 4 spring is provided to facilitate the telescopic ring to return to its original position. The end of the rotating rod away from the pushing rod is rotatably connected to the short rod.

[0016] According to the above technical solution, the fitting device includes a baffle, an arc-shaped rod, a connecting rod, a sleeve, a rotating locking key, and a sliding plate. The baffle is slidably mounted on the inner wall of the first retainer. The arc-shaped rod is slidably mounted on the side of the first retainer near the baffle. The sleeve consists of a front sleeve and a rear sleeve. The front sleeve is slidably mounted on the outer wall of the first retainer, and the rear sleeve is slidably mounted on the outer wall of the second retainer. One end of the connecting rod is rotatably mounted on the side of the arc-shaped rod near the sleeve, and the other end of the connecting rod is rotatably mounted on the side of the sleeve near the arc-shaped rod. The rotating locking key is rotatably mounted on the side of the front sleeve near the arc-shaped rod. On the side away from the connecting rod, the sliding plate is slidably installed on the side of the rear sleeve away from the connecting rod. The rear sleeve has an insertion port on the side near the rotating key, and the rotating key contacts the inner wall of the insertion port. The sliding plate has a square hole on the side near the rotating key, and the rotating key contacts the inner wall of the square hole. A No. 7 spring pushes the sliding plate down into the square hole of the rotating key, forming a shear-resistant structure, which enhances the strength of the fixing frame to withstand radial loads. The sleeve applies axial preload to the front and rear sleeves through the connecting rod, eliminating the fit clearance and enhancing the axial stiffness to withstand stress.

[0017] According to the above technical solution, the fitting device further includes an upper fixing buckle, a lower fixing buckle, and a sliding pin. The upper fixing buckle is slidably installed on one side of the retainer near the arc-shaped rod, and the lower fixing buckle is slidably installed on one side of the retainer near the arc-shaped rod. The surface of the arc-shaped rod has a circular opening, and the shape of the upper fixing buckle matches the circular opening. The bottom of the upper fixing buckle has a cylindrical groove, and the shape of the lower fixing buckle matches the cylindrical groove. The sliding pin is slidably installed on the top of the arc-shaped rod. Both the upper and lower fixing buckles have a slot on the side near the sliding pin, and the shape of the sliding pin matches the slot. The cooperation of the upper and lower fixing buckles restricts the movement of the arc-shaped rod, ensuring that it moves within a predetermined range, preventing the arc-shaped rod from loosening or shifting, enhancing the rigidity of the entire structure, and improving the stability and safety of the equipment.

[0018] According to the above technical solution, a tension spring is provided between the baffle and the first retainer to pull the baffle towards the inside of the first retainer. A fifth spring is provided between the arc-shaped rod and the first retainer to move the arc-shaped rod towards the baffle after the obstruction of the arc-shaped rod is released. A tension spring is provided between the upper and lower fixed buckles to pull the upper and lower fixed buckles to move relative to each other. A sixth spring is provided between the sliding pin and the arc-shaped rod to limit the upper and lower fixed buckles. A torsion spring is provided between the rotating key and the front sleeve to rotate the rotating key and make contact with the inside of the socket. A seventh spring is provided between the sliding plate and the rear sleeve to make the square hole contact the outer wall of the rotating key.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. In this invention, when the position of the round pin coincides with the round hole, the second spring will drive the round pin to insert into the round hole to limit and block the sliding rod. The fixing key moves to its original position. The fixing key and the inclined surface of the fixing rod cooperate to form a self-locking structure to prevent the inner ring body from accidentally separating under high speed or vibration conditions. By pushing the linear movement of the sliding rod, the linkage rod and the fixing key are linked to achieve one-click unlocking, and the inner ring body can be disassembled without complicated tools.

[0021] 2. In this invention, the movement of the sliding push plate will drive the key to move. The movement of the key will disengage from the inside of the slot, and the key will prevent the sliding push plate from moving away from the fixed rod. Centrifugal force drives the sliding push plate to slide towards the fixed rod, pushing the fixed key to insert deeper into the fixed groove, forming a positive feedback locking. The inclined surface design of the key ensures that it is inserted into the slot in one direction, preventing the sliding push plate from retracting. The higher the bearing speed, the more firmly the inner ring one and inner ring two are fixed, completely avoiding the risk of structural loosening at high speed.

[0022] 3. In this invention, at low speeds, the cage is fixed to the inner ring by the insert rod to ensure accurate positioning of the balls. At high speeds, the cage is released by centrifugal force to release the limiting position of the cage and the inner ring, thereby improving the maximum speed capability. After the rigid connection between the cage and the inner ring is released, the sliding friction resistance of the cage pair of balls is reduced, significantly reducing the temperature rise when the speed is too high. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram showing the positional structure of cage one and cage two according to the present invention;

[0025] Figure 3 This is a schematic diagram of the position structure of the rotating rod and sliding rod of the present invention;

[0026] Figure 4 This is a schematic diagram of the sliding push plate and key position structure of the present invention;

[0027] Figure 5 This is a schematic diagram showing the position and structure of the telescopic ring and push rod of the present invention;

[0028] Figure 6 This is a schematic diagram of the position and structure of the arc-shaped rod and connecting rod of the present invention;

[0029] Figure 7 This is a schematic diagram of the position structure of the sliding pin and the arc-shaped rod of the present invention;

[0030] Figure 8 for Figure 7 Enlarged structural diagram of part A in the middle.

[0031] The meanings of the labels in the diagram are as follows:

[0032] 1. Outer ring; 2. Inner ring one; 3. Inner ring two; 4. Ball bearing; 5. Cage one; 6. Cage two; 7. Connecting strip; 8. Fixing rod; 9. Fixing key; 10. Rotating rod; 11. Sliding rod; 12. Round pin; 13. Sliding push plate; 14. Insert key; 21. Push rod; 22. Telescopic ring; 23. Push rod; 24. Rotating rod; 25. Short rod; 26. Insert rod; 31. Baffle; 32. Arc rod; 33. Connecting rod; 34. Sleeve; 35. Upper fixing buckle; 36. Lower fixing buckle; 37. Sliding pin; 38. Rotating locking key; 39. Sliding locking plate. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1-8 One embodiment of the present invention is: a high-rotation industrial robot special-shaped bearing, comprising an outer ring 1 and an inner ring body, wherein the inner ring body is composed of an inner ring 1 2 and an inner ring 2 3, and the surface structure of the inner ring 2 3 is consistent with the surface structure of the inner ring 1 2. The high-rotation industrial robot special-shaped bearing further includes:

[0035] The ball bearing 4, used to reduce friction between the inner ring body and the outer ring 1, is disposed between the inner ring body and the outer ring 1.

[0036] The retaining frame used to protect the ball 4 is composed of retainer 5 and retainer 6. Retainer 5 is located on the side of the ball 4 near the inner ring 2, and retainer 6 is located on the side of the ball 4 near the inner ring 3.

[0037] Connecting strip 7 is used to connect the fixed brackets. Connecting strip 7 is hinged between the first retainer 5 and the second retainer 6 is also hinged between the two retainers.

[0038] A fixing device for clamping inner ring 2 and inner ring 3 is provided on the outer wall of the inner ring.

[0039] The fixing device includes a fixing rod 8, a fixing key 9, a rotating rod 10, a sliding rod 11, and a round pin 12. The fixing rod 8 is fixedly installed on the side of the inner ring 2 3 near the inner ring 1 2. A square groove is opened on the side of the inner ring 2 near the fixing rod 8, and the fixing rod 8 contacts the inner wall of the square groove. The fixing key 9 is slidably installed on the side of the inner ring 2 away from the inner ring 2 3. A fixing groove is opened on the side of the fixing rod 8 near the fixing key 9, and the fixing key 9 contacts the inner wall of the fixing groove. The sliding rod 11 is slidably installed on the side of the inner ring 2 near the fixing key 9. One end of the rotating rod 10 is rotatably mounted on... The fixing key 9 is located on the side of the sliding rod 11. The other end of the rotating rod 10 is rotatably mounted on the side of the sliding rod 11 near the fixing key 9. The round pin 12 slides through the outer wall of the sliding rod 11. The inner ring 12 has a round hole on the side near the fixing key 9. The shape of the round pin 12 matches the round hole. The fixing key 9 and the inclined surface of the fixing rod 8 cooperate to form a self-locking structure to prevent the inner ring from accidentally separating under high speed or vibration conditions. By pushing the linear movement of the sliding rod 11, the rotating rod 10 and the fixing key 9 are linked to achieve one-click unlocking, and the inner ring can be disassembled without complicated tools.

[0040] The fixing device also includes a sliding push plate 13 and a key 14. The sliding push plate 13 is slidably installed on the side of the inner ring 2 near the fixing key 9. The key 14 slides through the surface of the sliding push plate 13. A slot is provided on the side of the inner ring 2 near the key 14. The key 14 contacts the inner wall of the slot. The beveled design of the key 14 ensures that it is inserted into the slot in one direction, preventing the sliding push plate 13 from retracting. The higher the bearing speed, the more firmly the inner ring 2 and the inner ring 3 are fixed, completely avoiding the risk of structural loosening at high speeds.

[0041] A first spring is provided between the fixed key 9 and the inner ring 2. The first spring is provided to drive the fixed key 9 into the fixed groove. The side of the fixed key 9 near the fixed rod 8 is set with a slope. The slope of the fixed key 9 is provided to strengthen the fixation of the fixed rod 8. A second spring is provided between the round pin 12 and the sliding rod 11. The second spring is provided to drive the round pin 12 into the round hole to limit the sliding rod 11. A third spring is provided between the key 14 and the sliding push plate 13. The third spring is provided to drive the key 14 into the slot to limit the sliding push plate 13. The side of the key 14 near the ball 4 is set with a slope. The slope of the key 14 is provided to limit the sliding push plate 13 in one direction so that the sliding push plate 13 cannot move away from the ball 4.

[0042] In this embodiment, during bearing assembly, the ball bearing 4 needs to be fitted against the inner wall of the outer ring 1. Then, the inner ring 2 and inner ring 3 are assembled so that the ball bearing 4 is positioned between the outer ring 1 and the inner ring body. During the assembly of inner ring 2 and inner ring 3, the cage 5 and cage 6 will be activated to protect the ball bearing 4. When inner ring 3 is assembled with inner ring 2, the fixing rod 8 will be inserted into the square groove. When the fixing rod 8 is inserted into the square groove, the fixing groove will move. When the position of the fixing groove coincides with the fixing key 9, the first spring will activate the fixing key 9 to insert into the fixing groove, thus securing the fixing rod. When the limit is set at 8, the inner ring 2 and inner ring 3 will be fixed. When it is necessary to release the fixation between the inner ring 2 and inner ring 3 to replace the internal ball bearing 4, push the sliding rod 11 towards the fixed rod 8. The movement of the sliding rod 11 will push the rotating rod 10 to move. The movement of the rotating rod 10 will push the fixed key 9 to move away from the fixed rod 8, thus releasing the limit on the fixed rod 8. The movement of the sliding rod 11 will drive the round pin 12 to move. When the position of the round pin 12 coincides with the round hole, the second spring will drive the round pin 12 to insert into the round hole and adjust the sliding rod 11. The limiting stop key 9 moves back to its original position. The inclined surface of the key 9 and the fixing rod 8 cooperate to form a self-locking structure, preventing the inner ring from accidentally separating under high speed or vibration conditions. By pushing the linear movement of the sliding rod 11, the linkage rod 10 and the key 9 are activated to achieve one-button unlocking, allowing the inner ring to be disassembled without complicated tools. When the bearing rotates at high speed, the sliding push plate 13 will slide towards the fixing rod 8 due to centrifugal force. The movement of the sliding push plate 13 towards the fixing rod 8 will push the key 9 to move continuously into the fixing groove, strengthening the inner ring 2 and... The inner ring 2 and inner ring 3 are fixed together. The movement of the sliding push plate 13 will drive the key 14 to move. The movement of the key 14 will disengage from the inside of the slot. Then the key 14 will block the sliding push plate 13 from moving away from the fixed rod 8. Centrifugal force drives the sliding push plate 13 to slide towards the fixed rod 8, pushing the fixed key 9 to insert deeper into the fixed groove, forming a positive feedback locking. The inclined surface design of the key 14 ensures that it is inserted into the slot in one direction, preventing the sliding push plate 13 from retracting. The higher the bearing speed, the more firmly the inner ring 2 and inner ring 3 are fixed, completely avoiding the risk of structural loosening at high speed.

[0043] Please see Figures 1-8Based on the above embodiments, in another embodiment of the present invention, the inner ring body surface is further provided with a control device for controlling the mutual positioning between the fixing bracket and the inner ring body, and a fitting device for controlling the mutual fixation between the retainer 1 5 and the retainer 2 6. The control device includes a push rod 21, a telescopic ring 22, a push rod 23, a rotating rod 24, a short rod 25, and an insert rod 26. The push rod 21 is slidably installed on the side of the inner ring 1 2 near the fixing key 9, the telescopic ring 22 is slidably installed on the inner wall of the inner ring 1 2, the rotating rod 24 is rotatably installed on the inner wall of the inner ring 1 2, and the push rod 25 is inserted into the inner wall of the inner ring 1 2. 3 is fixedly installed on the side of the telescopic ring 22 near the rotating rod 24. The inner wall of the retainer 5 has a sliding groove. The insert rod 26 is slidably installed on the inner wall of the inner ring 2. The insert rod 26 contacts the inner wall of the sliding groove. The short rod 25 is fixedly installed on the side of the insert rod 26 near the rotating rod 24. At high speed, the retainer 5 is released by centrifugal force to release the limit of the retainer 5 and the inner ring 2, thereby improving the limit speed capability. After the rigid connection between the retainer 5 and the inner ring 2 is released, the sliding friction resistance of the retainer 5 on the ball 4 is reduced, and the temperature rise when the speed is too high is significantly reduced.

[0044] The telescopic ring 22 is divided into an inner arc ring and an outer arc ring. A No. 4 spring is provided between the inner arc ring and the outer arc ring. The No. 4 spring is provided to facilitate the reset of the telescopic ring 22. The end of the rotating rod 24 away from the pushing rod 23 is rotatably connected to the short rod 25.

[0045] The fitting device includes a baffle 31, an arc-shaped rod 32, a connecting rod 33, a retaining sleeve 34, a rotating locking key 38, and a sliding retaining plate 39. The baffle 31 is slidably mounted on the inner wall of the first retainer 5. The arc-shaped rod 32 is slidably mounted on the side of the first retainer 5 near the baffle 31. The retaining sleeve 34 consists of a front sleeve and a rear sleeve. The front sleeve is slidably mounted on the outer wall of the first retainer 5, and the rear sleeve is slidably mounted on the outer wall of the second retainer 6. One end of the connecting rod 33 is rotatably mounted on the side of the arc-shaped rod 32 near the retaining sleeve 34, and the other end of the connecting rod 33 is rotatably mounted on the side of the retaining sleeve 34 near the arc-shaped rod 32. The rotating locking key 38 is rotatably mounted on the side of the front sleeve away from the arc-shaped rod 32. On one side of the connecting rod 33, the sliding plate 39 is slidably installed on the side of the rear sleeve away from the connecting rod 33. The rear sleeve has an insertion port on the side near the rotating key 38, and the rotating key 38 contacts the inner wall of the insertion port. The sliding plate 39 has a square hole on the side near the rotating key 38, and the rotating key 38 contacts the inner wall of the square hole. The sliding plate 39 is pushed down into the square hole of the rotating key 38 by a No. 7 spring, forming a shear-resistant structure, which enhances the strength of the fixing frame to withstand radial loads. The sleeve 34 applies axial preload to the front and rear sleeves through the connecting rod 33, eliminating the fit clearance and enhancing the stress that the axial stiffness can withstand.

[0046] The fitting device also includes an upper fixing buckle 35, a lower fixing buckle 36, and a sliding pin 37. The upper fixing buckle 35 is slidably installed on the side of the retainer 5 near the arc-shaped rod 32, and the lower fixing buckle 36 is slidably installed on the side of the retainer 5 near the arc-shaped rod 32. The surface of the arc-shaped rod 32 has a round opening, and the shape of the upper fixing buckle 35 matches the round opening. The bottom of the upper fixing buckle 35 has a cylindrical groove, and the shape of the lower fixing buckle 36 matches the cylindrical groove. The sliding pin 37 is slidably installed on the top of the arc-shaped rod 32. Both the upper fixing buckle 35 and the lower fixing buckle 36 have a slot on the side near the sliding pin 37, and the shape of the sliding pin 37 matches the slot. The cooperation of the upper fixing buckle 35 and the lower fixing buckle 36 restricts the movement of the arc-shaped rod 32, ensuring that it moves within a predetermined range, preventing the arc-shaped rod 32 from loosening or shifting, enhancing the rigidity of the entire structure, and improving the stability and safety of the equipment.

[0047] A tension spring is provided between the baffle 31 and the retainer 5 to pull the baffle 31 toward the inside of the retainer 5. A fifth spring is provided between the arc rod 32 and the retainer 5 to move the arc rod 32 toward the baffle 31 after the block is released. A tension spring is provided between the upper fixing buckle 35 and the lower fixing buckle 36 to pull the upper fixing buckle 35 and the lower fixing buckle 36 to move relative to each other. A sixth spring is provided between the sliding pin 37 and the arc rod 32 to limit the upper fixing buckle 35 and the lower fixing buckle 36. A torsion spring is provided between the rotating key 38 and the front sleeve to rotate the rotating key 38 and make contact with the inside of the socket. A seventh spring is provided between the sliding plate 39 and the rear sleeve to make the square hole contact the outer wall of the rotating key 38.

[0048] In this embodiment, during operation: when the sliding push plate 13 moves towards the fixed rod 8, it pushes the push rod 21 to move. The movement of the push rod 21 pushes the telescopic ring 22 to expand towards the ball 4. The expansion of the telescopic ring 22 towards the ball 4 pushes the push rod 23 to move towards the ball 4. When the push rod 23 moves, it pushes the rotating rod 24 to rotate. The rotation of the rotating rod 24 pulls the short rod 25 to move away from the ball 4. The movement of the short rod 25 drives the insertion rod 26 to move. The movement of the insertion rod 26 away from the cage 5... Releasing the limiting position between the inner ring 2 and the cage 5 allows the cage 5 to be released from its fixation with the inner ring 2 when the bearing rotates at high speed. At low speed, the cage 5 is fixed to the inner ring 2 by the insert rod 26 to ensure precise positioning of the balls 4. At high speed, the limiting position between the cage 5 and the inner ring 2 is released by centrifugal force, thereby improving the limiting speed capability. After the rigid connection between the cage 5 and the inner ring 2 is released, the sliding friction resistance of the cage 5 on the balls 4 is reduced, significantly reducing the temperature rise when the speed is too high.

[0049] When inner ring 1 (2) and inner ring 2 (3) are combined, the front sleeve will contact the rear sleeve. The front sleeve will then cause the rotating key 38 to move towards the rear sleeve. When the position of the rotating key 38 coincides with the position of the insertion port, the torsion spring will cause the rotating key 38 to insert into the insertion port, limiting the movement of the front and rear sleeves and fixing cage 1 (5) and cage 2 (6). When the position of the rotating key 38 coincides with the position of the square hole, the No. 7 spring will cause the sliding plate 39 to move towards the rotating key 38. The rotating key 38 will then insert into the inner wall of the square hole, and the sliding plate 39 will strengthen the fixation of cage 1 (5) and cage 2 (6). When the insertion rod 26 moves away from cage 1 (5)... When the direction of movement is adjusted, the obstruction of baffle 31 is released, and baffle 31 is pulled by the tension spring to move inward toward the inside of retainer 5. The movement of baffle 31 toward the inside of retainer 5 releases the obstruction of arc rod 32, and arc rod 32 moves toward the direction of baffle 31. The movement of arc rod 32 pulls the connecting rod 33 to move, and the movement of connecting rod 33 pulls the sleeve 34 toward the connecting strip 7 to fix the connecting strip 7 between retainer 5 and retainer 6, and pulls the front sleeve and the rear sleeve to fix them more tightly. Rotating the locking key 38, under the action of the torsion spring, automatically inserts it into the rear sleeve socket, completing the process. The initial positioning of cage 5 and cage 6 is followed by the sliding plate 39 being pushed down into the square hole of the rotating key 38 by spring No. 7, forming a shear-resistant structure and enhancing the strength of the fixing frame to withstand radial loads. The sleeve 34 applies axial preload to the front and rear sleeves through the connecting rod 33, eliminating the fit clearance and enhancing the axial stiffness to withstand stress. The movement of the arc-shaped rod 32 will drive the circular opening to move. When the position of the circular opening coincides with the position of the upper fixing buckle 35, the upper fixing buckle 35 will insert into the circular opening to limit the arc-shaped rod 32. When the position of the circular opening coincides with the position of the lower fixing buckle 36, the lower fixing buckle 36 will move towards the inner wall of the cylindrical groove. The upper fixing buckle 35 and the lower fixing buckle 36 fix the arc-shaped rod 32. When the upper fixing buckle 35 and the lower fixing buckle 36 move relative to each other, they will drive the slot to move. When the position of the slot coincides with the sliding pin 37, the sliding pin 37 will insert into the inner wall of the slot to limit the upper fixing buckle 35 and the lower fixing buckle 36. The arc-shaped rod 32 is fixed by the upper fixing buckle 35 and the lower fixing buckle 36. The cooperation of the upper fixing buckle 35 and the lower fixing buckle 36 restricts the movement of the arc-shaped rod 32, ensuring that it moves within a predetermined range, preventing the arc-shaped rod 32 from loosening or shifting, enhancing the rigidity of the entire structure, and improving the stability and safety of the equipment.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-rotation industrial robot special-shaped bearing, comprising an outer ring (1) and an inner ring body, wherein the inner ring body is composed of an inner ring one (2) and an inner ring two (3), wherein the surface structure of the inner ring two (3) is consistent with the surface structure of the inner ring one (2), characterized in that, Special-shaped bearings for high-rotation industrial robots also include: A ball bearing (4) for reducing friction between the inner ring body and the outer ring (1) is disposed between the inner ring body and the outer ring (1); A retainer for protecting the ball (4) is composed of a retainer one (5) and a retainer two (6). The retainer one (5) is located on the side of the ball (4) near the inner ring one (2), and the retainer two (6) is located on the side of the ball (4) near the inner ring two (3). Connecting strip (7) is used to connect the fixed frames. The connecting strip (7) is hinged between the first retainer (5). The second retainer (6) is also hinged between the two retainers via the connecting strip (7). A fixing device for clamping inner ring one (2) and inner ring two (3) is provided on the outer wall of the inner ring; A control device for limiting the mutual movement between the fixed frame and the inner ring body is installed on the outer wall of the inner ring body. A fitting device for controlling the mutual fixation of cage one (5) and cage two (6) is provided on the outer wall of the inner ring; The fixing device includes a fixing rod (8), a fixing key (9), a rotating rod (10), a sliding rod (11), and a round pin (12). The fixing rod (8) is fixedly installed on the side of the inner ring two (3) near the inner ring one (2). The side of the inner ring one (2) near the fixing rod (8) has a square groove, and the fixing rod (8) contacts the inner wall of the square groove. The fixing key (9) is slidably installed on the side of the inner ring one (2) away from the inner ring two (3). The side of the fixing rod (8) near the fixing key (9) has a fixing groove. The fixed key (9) contacts the inner wall of the fixed groove. The sliding rod (11) is slidably installed on the side of the inner ring (2) near the fixed key (9). One end of the rotating rod (10) is rotatably installed on the side of the fixed key (9) near the sliding rod (11). The other end of the rotating rod (10) is rotatably installed on the side of the sliding rod (11) near the fixed key (9). The round pin (12) slides through the outer wall of the sliding rod (11). A round hole is opened on the side of the inner ring (2) near the fixed key (9). The shape of the round pin (12) matches the round hole. The fixing device also includes a sliding push plate (13) and a key (14). The sliding push plate (13) is slidably installed on the side of the inner ring (2) near the fixing key (9). The key (14) slides through the surface of the sliding push plate (13). A slot is provided on the side of the inner ring (2) near the key (14). The key (14) contacts the inner wall of the slot. A first spring is provided between the fixed key (9) and the inner ring (2). The side of the fixed key (9) near the fixed rod (8) is set as an inclined surface. A second spring is provided between the round pin (12) and the sliding rod (11). A third spring is provided between the key (14) and the sliding push plate (13). The side of the key (14) near the ball (4) is set as an inclined surface.

2. The special-shaped bearing for high-rotation industrial robots according to claim 1, characterized in that: The control device includes a push rod (21), a telescopic ring (22), a push rod (23), a rotating rod (24), a short rod (25), and an insert rod (26). The push rod (21) is slidably installed on the side of the inner ring (2) near the fixed key (9). The telescopic ring (22) is slidably installed on the inner wall of the inner ring (2). The rotating rod (24) is rotatably installed on the inner wall of the inner ring (2). The push rod (23) is fixedly installed on the side of the telescopic ring (22) near the rotating rod (24). The inner wall of the retainer (5) is provided with a sliding groove. The insert rod (26) is slidably installed on the inner wall of the inner ring (2). The insert rod (26) is in contact with the inner wall of the sliding groove. The short rod (25) is fixedly installed on the side of the insert rod (26) near the rotating rod (24).

3. The special-shaped bearing for high-rotation industrial robots according to claim 2, characterized in that: The telescopic ring (22) is divided into an inner arc ring and an outer arc ring. A No. 4 spring is provided between the inner arc ring and the outer arc ring. The end of the rotating rod (24) away from the push rod (23) is rotatably connected to the short rod (25).

4. The special-shaped bearing for high-rotation industrial robots according to claim 3, characterized in that: The fitting device includes a baffle (31), an arc-shaped rod (32), a connecting rod (33), a sleeve (34), a rotating locking key (38), and a sliding locking plate (39). The baffle (31) is slidably mounted on the inner wall of the first retainer (5). The arc-shaped rod (32) is slidably mounted on the side of the first retainer (5) near the baffle (31). The sleeve (34) consists of a front sleeve and a rear sleeve. The front sleeve is slidably mounted on the outer wall of the first retainer (5), and the rear sleeve is slidably mounted on the outer wall of the second retainer (6). One end of the connecting rod (33) is rotatably mounted on the arc-shaped rod (32) near the side of the first retainer (5). On one side of the sleeve (34), the other end of the connecting rod (33) is rotatably mounted on the side of the sleeve (34) near the arc-shaped rod (32). The rotating key (38) is rotatably mounted on the side of the front sleeve away from the connecting rod (33). The sliding plate (39) is slidably mounted on the side of the rear sleeve away from the connecting rod (33). The side of the rear sleeve near the rotating key (38) has an insertion port. The rotating key (38) contacts the inner wall of the insertion port. The side of the sliding plate (39) near the rotating key (38) has a square hole. The rotating key (38) contacts the inner wall of the square hole.

5. The special-shaped bearing for high-rotation industrial robots according to claim 4, characterized in that: The fitting device further includes an upper fixing buckle (35), a lower fixing buckle (36), and a sliding pin (37). The upper fixing buckle (35) is slidably installed on the side of the retainer (5) near the arc-shaped rod (32). The lower fixing buckle (36) is slidably installed on the side of the retainer (5) near the arc-shaped rod (32). The surface of the arc-shaped rod (32) has a round opening. The shape of the upper fixing buckle (35) matches the round opening. The bottom of the upper fixing buckle (35) has a cylindrical groove. The shape of the lower fixing buckle (36) matches the cylindrical groove. The sliding pin (37) is slidably installed on the top of the arc-shaped rod (32). The upper fixing buckle (35) and the lower fixing buckle (36) both have a slot on the side near the sliding pin (37). The shape of the sliding pin (37) matches the slot.

6. The special-shaped bearing for high-rotation industrial robots according to claim 5, characterized in that: A tension spring is provided between the baffle (31) and the retainer (5), a No. 5 spring is provided between the arc rod (32) and the retainer (5), a tension spring is provided between the upper fixing buckle (35) and the lower fixing buckle (36), a No. 6 spring is provided between the sliding pin (37) and the arc rod (32), a torsion spring is provided between the rotating key (38) and the front sleeve, and a No. 7 spring is provided between the sliding plate (39) and the rear sleeve.

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