Special-shaped bearing of high-rotation industrial robot

Abstract

The invention discloses a high-rotation industrial robot special-shaped bearing, and relates to the technical field of special-shaped bearings, the high-rotation industrial robot special-shaped bearing comprises an outer ring and an inner ring body, the inner ring body is formed by combining a first inner ring and a second inner ring, and the structure of the surface of the second inner ring is consistent with the structure of the surface of the first inner ring; the high-rotation industrial robot special-shaped bearing further comprises balls used for reducing the friction effect between the inner ring body and the outer ring and a fixing frame arranged between the inner ring body and the outer ring and used for protecting the balls, the fixing frame is formed by combining a first retainer and a second retainer, the first retainer is arranged on the side, close to the first inner ring, of the balls, and the second retainer is arranged on the side, close to the second inner ring, of the balls. The second retainer is arranged on the side, close to the second inner ring, of the ball, the fixing device is used for clamping the first inner ring and the second inner ring, the fixing device is arranged on the outer wall of the inner ring body, one-key unlocking is achieved by pushing the linear action of the sliding rod, linkage of the rotating rod and the fixing key, and the inner ring body can be detached without complex tools.

Description

Technical Field

[0001] The invention relates to the technical field of special-shaped bearings, in particular to a special-shaped bearing for a high-rotation industrial robot. Background Art

[0002] Industrial robots are multi-jointed manipulators or multi-degree-of-freedom machines widely used in industry. They possess a degree of autonomy and rely on their own power and control capabilities to perform various industrial processing and manufacturing functions. Industrial robots are widely used in various industries, including electronics, logistics, and chemicals. Because robots require multiple rotational features, bearings play a key role.

[0003] The patent announcement number CN217713338U is a high-rotation industrial robot special-shaped bearing, which relates to the technical field of special-shaped bearings, including an inner ring body and an outer ring. The inner ring body is spliced ​​by two identical inner rings, and the two inner rings are connected by a connecting assembly. An outer gap, an oblique gap and an inner gap are provided between the inner ring and the outer ring, and a rolling assembly is provided between the inner ring body and the outer ring. The beneficial effects of this patent are: since the first ball, the second ball and the third ball are all rotatably connected to the bracket through the bearing, the first ball, the second ball and the third ball will not have sliding friction with the inner ring body and the outer ring, thereby reducing friction; since the inner ring body and the outer ring bracket are provided with an oblique gap, the rolling assembly is not easy to separate from the inner ring body and the outer ring, thereby meeting the use requirements of industrial robots.

[0004] The above patent provides an inclined gap between the inner ring body and the outer ring bracket, so that the rolling assembly is not easily separated from the inner ring body and the outer ring, thereby meeting the use requirements of industrial robots. However, when the inner ring body and the outer ring are not easily separated and the rough balls inside the bearing need to be replaced, the bearing needs to be disassembled. Disassembly may require greater force and even special tools, which not only increases the complexity of disassembly, but may also cause damage to other parts of the bearing during improper operation, affecting its performance. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a special-shaped bearing for a high-rotation industrial robot, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-rotation industrial robot special-shaped bearing, comprising an outer ring and an inner ring body, wherein the inner ring body is composed of an inner ring 1 and an inner ring 2, and the structure of the surface of the inner ring 2 is consistent with the structure of the surface of the inner ring 1. The high-rotation industrial robot special-shaped bearing further comprises: Balls used to reduce friction between the inner ring and the outer ring are arranged between the inner ring and the outer ring; A retainer for protecting the balls, the retainer being composed of a first retainer and a second retainer. The first retainer is disposed on the side of the balls close to the first inner ring, and the second retainer is disposed on the side of the balls close to the second inner ring. A connecting strip for connecting the fixing frames, wherein the connecting strip is hinged between the first retaining frame and the second retaining frame is also hinged through the connecting strip; A fixing device for clamping the first inner ring and the second inner ring is arranged on the outer wall of the inner ring.

[0007] The cam is fixedly mounted on a side of the inner ring 1 close to the inner ring 2, and a square groove is provided on the side of the inner ring 1 close to the fixed rod, and the fixed rod contacts the inner wall of the square groove. The fixed key is slidably mounted on a side of the inner ring 1 away from the inner ring 2, and a fixed groove is provided on the side of the fixed rod close to the fixed key. The fixed key contacts the inner wall of the fixed groove, and the sliding rod is slidably mounted on the side of the inner ring 1 close to the fixed key. One end of the rotating rod is rotatably mounted on the side of the fixed key close to the sliding rod, and the other end of the rotating rod is rotatably mounted on the side of the sliding rod close to the fixed key. The round pin slides through the outer wall of the sliding rod, and a round hole is provided on the side of the inner ring 1 close to the fixed key. The shape of the round pin matches the round hole. The fixed key cooperates with the inclined surface of the fixed rod to form a self-locking structure to prevent accidental separation of the inner ring body under high speed or vibration conditions. By pushing the linear action of the sliding rod, the rotating rod and the fixed key are linked to achieve one-touch unlocking, and the inner ring body can be disassembled without complex tools.

[0008] According to the above technical solution, the fixing device also includes a sliding push plate and an insert key. The sliding push plate is slidably installed on the side of the inner ring one close to the fixed key. The insert key slides through the surface of the sliding push plate. A slot is provided on the side of the inner ring one close to the insert key. The insert key contacts the inner wall of the slot. The inclined surface design of the insert key ensures that it is unidirectionally inserted into the slot to prevent the sliding push plate from retreating. The higher the bearing speed, the more firmly the inner ring one and the inner ring two are fixed, and the risk of structural loosening at high speed is completely avoided.

[0009] According to the above technical solution, a No. 1 spring is provided between the fixed key and the inner ring, and the No. 1 spring is provided to drive the fixed key to be inserted into the fixed groove. The side of the fixed key close to the fixed rod is set as an inclined surface, and the fixed key is provided with an inclined surface to strengthen the fixation of the fixed rod. A No. 2 spring is provided between the round pin and the sliding rod, and the No. 2 spring is provided to drive the round pin to be inserted into the round hole to limit the sliding rod. A No. 3 spring is provided between the insert key and the sliding push plate, and the No. 3 spring is provided to drive the insert key to be inserted into the slot to limit the sliding push plate. The side of the insert key close to the ball is set as an inclined surface, and the insert key is provided with an inclined surface to limit the sliding push plate in one direction so that the sliding push plate cannot move in the direction away from the ball.

[0010] The cam is fixedly mounted on the inner wall of the inner ring, and the cam is fixedly mounted on the inner wall of the inner ring, and the cam is fixedly mounted on the inner wall of the inner ring, and the cam is fixedly mounted on the inner wall of the inner ring, and the cam is fixedly mounted on the inner wall of the inner ring, and the cam is fixedly mounted on the inner wall of the inner ring, and the cam is fixedly mounted on the inner wall of the inner ring, and the cam is fixedly mounted on the inner wall of the inner ring, and the cam is fixedly mounted on the inner wall of the inner ring, and the cam is fixedly mounted on the inner wall of the inner ring, and the cam is fixedly mounted on the inner wall of the inner ring, and the cam is fixedly mounted on the inner wall of the inner ring, and the cam is fixedly mounted on the inner wall of the inner ring,

[0011] According to the above technical solution, the telescopic ring is divided into an inner arc ring and an outer arc ring, and 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. The end of the rotating rod away from the push rod is rotatably connected to the short rod.

[0012] According to the above technical solution, the interlocking device includes a baffle, an arc rod, a connecting rod, a clamping sleeve, a rotating card key and a sliding clamping plate. The baffle is slidably mounted on the inner wall of the retaining frame, the arc rod is slidably mounted on the side of the retaining frame close to the baffle, the clamping sleeve consists of a front sleeve and a rear sleeve, the front sleeve is slidably mounted on the outer wall of the retaining frame, the rear sleeve is slidably mounted on the outer wall of the retaining frame two, one end of the connecting rod is rotatably mounted on the side of the arc rod close to the clamping sleeve, the other end of the connecting rod is rotatably mounted on the side of the clamping sleeve close to the arc rod, and the rotating card key is rotatably mounted on the far side of the front sleeve The sliding card plate is slidably installed on the side of the rear sleeve away from the connecting rod, and a socket is provided on the side of the rear sleeve close to the rotating card key, and the rotating card key contacts the inner wall of the socket. A square hole is provided on the side of the sliding card plate close to the rotating card key, and the rotating card key contacts the inner wall of the square hole. The sliding card plate is pushed down by the No. 7 spring to embed the square hole of the rotating card key to form an anti-shear structure, which enhances the strength of the fixed frame to withstand radial loads. The card sleeve applies axial pre-tightening force to the front sleeve and the rear sleeve through the connecting rod, eliminates the fitting clearance, and enhances the stress that the axial stiffness can withstand.

[0013] According to the above technical solution, the interlocking device also 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 retaining frame close to the arc rod, the lower fixing buckle is slidably installed on one side of the retaining frame close to the arc rod, a circular opening is provided on the surface of the arc rod, the shape of the upper fixing buckle matches the circular opening, the bottom of the upper fixing buckle is provided with a cylindrical groove, the shape of the lower fixing buckle matches the cylindrical groove, the sliding pin is slidably installed on the top of the arc rod, the upper fixing buckle and the lower fixing buckle are both provided with a card slot on one side close to the sliding pin, the shape of the sliding pin matches the card slot, the cooperation of the upper fixing buckle and the lower fixing buckle limits the movement of the arc rod, ensuring that it moves within a predetermined range, preventing the arc rod from loosening or offsetting, enhancing the rigidity of the entire structure, and improving the stability and safety of the equipment.

[0014] According to the above technical solution, a tension spring is provided between the baffle and the retaining frame 1, and the tension spring is provided to pull the baffle toward the inside of the retaining frame 1. A No. 5 spring is provided between the arc rod and the retaining frame 1, and the No. 5 spring is provided to drive the arc rod to move toward the baffle after the obstruction of the arc rod is released. A tension spring is provided between the upper fixed buckle and the lower fixed buckle, and the tension spring is provided to pull the upper fixed buckle and the lower fixed buckle for relative movement. A No. 6 spring is provided between the sliding pin and the arc rod, and the No. 6 spring is provided to drive the sliding pin to limit the upper fixed buckle and the lower fixed buckle. A torsion spring is provided between the rotating key and the front sleeve, and the torsion spring is provided to drive the rotating key to rotate and contact the inside of the socket. A No. 7 spring is provided between the sliding card plate and the rear sleeve, and the No. 7 spring is provided to drive the square hole to contact the outer wall of the rotating key.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In this invention, when the position of the round pin coincides with the round hole, the No. 2 spring will drive the round pin to be inserted into the round hole to limit the sliding rod and block the fixed key from moving toward its original position. The fixed key cooperates with the inclined surface of the fixed rod to form a self-locking structure to prevent the inner ring from accidentally separating under high speed or vibration conditions. By pushing the linear action of the sliding rod, the rotating rod and the fixed key are linked to achieve one-button unlocking, and the inner ring can be disassembled without complex tools.

[0016] 2. In this invention, the movement of the sliding push plate will drive the insertion key to move, and the movement of the insertion key will be released from the inside of the slot, and the insertion key will prevent the sliding push plate from moving in the direction away from the fixed rod. The centrifugal force drives the sliding push plate to slide toward the fixed rod, pushing the fixed key deeper into the fixed slot, forming a positive feedback locking. The inclined design of the insertion key ensures that it is unidirectionally inserted into the slot to prevent the sliding push plate from retreating. The higher the bearing speed, the more firmly the inner ring one and the inner ring two are fixed, and the risk of structural loosening at high speed is completely avoided.

[0017] 3. In this invention, at low speeds, retainer 1 is fixed to inner ring 1 by an insert rod to ensure accurate positioning of the balls. At high speeds, the centrifugal force releases the limit between retainer 1 and inner ring 1, thereby improving the maximum speed capability. After releasing the rigid connection between retainer 1 and inner ring 1, 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the position structure of the retainer 1 and the retainer 2 of the present invention; Figure 3 This is a schematic diagram of the position structure of the rotating rod and the sliding rod of the present invention; Figure 4 This is a schematic diagram of the sliding push plate and key position structure of the present invention; Figure 5 This is a schematic diagram of the position structure of the telescopic ring and the push rod of the present invention; Figure 6 This is a schematic diagram of the position structure of the arc rod and the connecting rod of the present invention; Figure 7 This is a schematic diagram of the position structure of the sliding pin and the arc rod of the present invention; Figure 8 for Figure 7 Schematic diagram of the structure of the enlarged position of part A.

[0019] The meaning of each number in the figure is: 1. Outer ring; 2. Inner ring one; 3. Inner ring two; 4. Ball; 5. Cage one; 6. Cage two; 7. Connecting strip; 8. Fixed rod; 9. Fixed 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. Card sleeve; 35. Upper fixing buckle; 36. Lower fixing buckle; 37. Sliding pin; 38. Rotating card key; 39. Sliding card plate. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figures 1-8One embodiment of the present invention is a special-shaped bearing for a high-rotation industrial robot, 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 special-shaped bearing for a high-rotation industrial robot further comprises: The balls 4 are used to reduce the friction between the inner ring and the outer ring 1 and are arranged between the inner ring and the outer ring 1; A retainer for protecting the ball 4, which is composed of a retainer 1 5 and a retainer 2 6. The retainer 1 5 is arranged on the side of the ball 4 close to the inner ring 1 2, and the retainer 2 6 is arranged on the side of the ball 4 close to the inner ring 2 3; A connecting strip 7 for connecting the fixing frames, the connecting strip 7 is hinged between the retaining frame 1 5, and the retaining frames 2 6 are also hinged through the connecting strip 7; A fixing device for clamping the inner ring 1 2 and the inner ring 2 3 is arranged on the outer wall of the inner ring body.

[0022] 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 mounted on the side of the inner ring 2 3 close to the inner ring 1 2. A square groove is provided on the side of the inner ring 1 2 close to the fixing rod 8. The fixing rod 8 contacts the inner wall of the square groove. The fixing key 9 is slidably mounted on the side of the inner ring 1 2 away from the inner ring 2 3. A fixing groove is provided on the side of the fixing rod 8 close to the fixing key 9. The fixing key 9 contacts the inner wall of the fixing groove. The sliding rod 11 is slidably mounted on the side of the inner ring 2 close to the fixing key 9. One end of the rotating rod 10 is rotatably mounted on The fixed key 9 is close to the side of the sliding rod 11, and the other end of the rotating rod 10 is rotatably installed on the side of the sliding rod 11 close to the fixed key 9. The round pin 12 slides through the outer wall of the sliding rod 11, and a round hole is opened on the side of the inner ring 2 close to the fixed key 9. The shape of the round pin 12 matches the round hole. The fixed key 9 cooperates with the inclined surface of the fixed rod 8 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 action of the sliding rod 11, the rotating rod 10 and the fixed key 9 are linked to achieve one-button unlocking, and the inner ring body can be disassembled without complicated tools.

[0023] 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 close to the fixed 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 close to the key 14. The key 14 contacts the inner wall of the slot. The inclined design of the key 14 ensures that it is unidirectionally inserted into the slot to prevent the sliding push plate 13 from retreating. The higher the bearing speed, the more firmly the inner ring 2 and the inner ring 2 3 are fixed, and the risk of structural loosening at high speed is completely avoided.

[0024] A No. 1 spring is provided between the fixed key 9 and the inner ring 2. The No. 1 spring is provided to drive the fixed key 9 to be inserted into the fixed groove. The side of the fixed key 9 close to the fixed rod 8 is set as an inclined surface. The fixed key 9 is provided with an inclined surface to strengthen the fixation of the fixed rod 8. A No. 2 spring is provided between the round pin 12 and the sliding rod 11. The No. 2 spring is provided to drive the round pin 12 to be inserted into the round hole to limit the sliding rod 11. A No. 3 spring is provided between the insert key 14 and the sliding push plate 13. The No. 3 spring is provided to drive the insert key 14 to be inserted into the slot to limit the sliding push plate 13. The side of the insert key 14 close to the ball 4 is set as an inclined surface. The insert key 14 is provided with an inclined surface to limit the sliding push plate 13 in one direction so that the sliding push plate 13 cannot move in the direction away from the ball 4.

[0025] When this embodiment is working: when the bearing needs to be assembled, the ball 4 needs to be fitted with the inner wall of the outer ring 1, and then the inner ring 1 2 and the inner ring 2 3 are assembled so that the ball 4 is between the outer ring 1 and the inner ring body. When the inner ring 1 2 and the inner ring 2 3 are assembled, the retainer 1 5 and the retainer 2 6 are driven to protect the ball 4. When the inner ring 2 3 is assembled with the inner ring 1 2, the fixing rod 8 is driven to be inserted into the square groove. When the fixing rod 8 is inserted into the square groove, it drives the fixing groove to move. When the position of the fixing groove coincides with the fixing key 9, the No. 1 spring will drive the fixing key 9 to be inserted into the fixing groove to fix the fixing rod. 8 is limited, the inner ring 1 2 and the inner ring 2 3 will be fixed. When it is necessary to release the fixation between the inner ring 1 2 and the inner ring 2 3 to replace the internal ball 4, push the sliding rod 11 to move in the direction of 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 fixing key 9 to move away from the fixed rod 8, then the limit of the fixed rod 8 will be released, and 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 No. 2 spring will drive the round pin 12 to insert into the round hole to limit the sliding rod 11. The limit block fixed key 9 moves toward the original position, and the fixed key 9 cooperates with the inclined surface of the fixed rod 8 to form a self-locking structure to prevent the inner ring from accidentally separating under high speed or vibration conditions. By pushing the linear action of the sliding rod 11, the rotating rod 10 and the fixed key 9 are linked to achieve one-button unlocking, and the inner ring can be disassembled without complicated tools. When the bearing rotates at high speed, the sliding push plate 13 will slide toward the direction close to the fixed rod 8 due to centrifugal force. The movement of the sliding push plate 13 toward the fixed rod 8 will push the fixed key 9 to continue to move toward the inside of the fixed groove, strengthening the inner ring 2 and the inner ring 2. The inner rings 2 and 3 are fixed together, and the movement of the sliding push plate 13 will drive the movement of the key 14. The movement of the key 14 will release the inner part of the slot, and the key 14 will block the sliding push plate 13 from moving away from the fixed rod 8. The centrifugal force drives the sliding push plate 13 to slide toward the fixed rod 8, pushing the fixed key 9 deeper into the fixed groove, forming a positive feedback locking. The inclined design of the key 14 ensures its one-way insertion into the slot to prevent the sliding push plate 13 from retreating. The higher the bearing speed, the more firmly the inner ring 1 2 and the inner ring 2 3 are fixed, and the risk of structural loosening at high speed is completely avoided.

[0026] See also Figures 1-8 On the basis of the above embodiment, in another embodiment of the present invention, the surface of the inner ring body is further provided with a control device for controlling the mutual limitation between the fixing frame and the inner ring body and a fitting device for controlling the mutual fixation between the retaining frame 1 5 and the retaining frame 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 inserting rod 26. The push rod 21 is slidably mounted on the side of the inner ring 1 2 close to the fixed key 9, the telescopic ring 22 is slidably mounted on the inner wall of the inner ring 1 2, the rotating rod 24 is rotatably mounted on the inner wall of the inner ring 1 2, and the push rod 2 3 is fixedly mounted on the side of the telescopic ring 22 close to the rotating rod 24, a sliding groove is provided on the inner wall of the retainer 5, the insertion rod 26 is slidably mounted on the inner wall of the inner ring 2, the insertion rod 26 contacts the inner wall of the sliding groove, and the short rod 25 is fixedly mounted on the side of the insertion rod 26 close to the rotating rod 24. At high speeds, the centrifugal force releases the limit of the retainer 5 and the inner ring 2, releasing the retainer 5, thereby improving the maximum speed capability. After releasing the rigid connection between the retainer 5 and the inner ring 2, the sliding friction resistance of the retainer 5 to the ball 4 is reduced, significantly reducing the temperature rise when the speed is too high.

[0027] 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.

[0028] The interlocking device includes a baffle 31, an arc rod 32, a connecting rod 33, a clamping sleeve 34, a rotating card key 38 and a sliding clamping plate 39. The baffle 31 is slidably mounted on the inner wall of the retaining frame 5, the arc rod 32 is slidably mounted on the side of the retaining frame 5 close to the baffle 31, the clamping sleeve 34 is composed of a front sleeve and a rear sleeve, the front sleeve is slidably mounted on the outer wall of the retaining frame 5, and the rear sleeve is slidably mounted on the outer wall of the retaining frame 2 6. One end of the connecting rod 33 is rotatably mounted on the side of the arc rod 32 close to the clamping sleeve 34, and the other end of the connecting rod 33 is rotatably mounted on the side of the clamping sleeve 34 close to the arc rod 32. The rotating card key 38 is rotatably mounted on the front sleeve away from the front sleeve. On one side of the connecting rod 33, a sliding card plate 39 is slidably installed on the side of the rear sleeve away from the connecting rod 33. A socket is provided on the side of the rear sleeve close to the rotating card key 38, and the rotating card key 38 contacts the inner wall of the socket. A square hole is provided on the side of the sliding card plate 39 close to the rotating card key 38, and the rotating card key 38 contacts the inner wall of the square hole. The sliding card plate 39 is pushed down by the No. 7 spring to embed into the square hole of the rotating card key 38, forming an anti-shear structure, which enhances the strength of the fixed frame to withstand radial loads. The card sleeve 34 applies axial pre-tightening force to the front sleeve and the rear sleeve through the connecting rod 33, eliminates the fitting clearance, and enhances the stress that the axial stiffness can withstand.

[0029] The interlocking 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 mounted on the side of the retaining frame 5 close to the arc rod 32, and the lower fixing buckle 36 is slidably mounted on the side of the retaining frame 5 close to the arc rod 32. A circular opening is provided on the surface of the arc rod 32, and the shape of the upper fixing buckle 35 matches the circular opening. A cylindrical groove is provided at the bottom of the upper fixing buckle 35, and the shape of the lower fixing buckle 36 matches the cylindrical groove. The sliding pin 37 is slidably mounted on the top of the arc rod 32. A slot is provided on the side of the upper fixing buckle 35 and the lower fixing buckle 36 close to 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 limits the movement of the arc rod 32, ensuring that it moves within a predetermined range, preventing the arc rod 32 from loosening or offsetting, enhancing the rigidity of the entire structure, and improving the stability and safety of the equipment.

[0030] A tension spring is provided between the baffle 31 and the retaining frame 5. The tension spring is provided to pull the baffle 31 toward the inside of the retaining frame 5. A No. 5 spring is provided between the arc rod 32 and the retaining frame 5. The No. 5 spring is provided to drive the arc rod 32 to move toward the direction of the baffle 31 after the obstruction of the arc rod 32 is released. A tension spring is provided between the upper fixing buckle 35 and the lower fixing buckle 36. The tension spring is provided to pull the upper fixing buckle 35 and the lower fixing buckle 36 to move relative to each other. A No. 6 spring is provided between the sliding pin 37 and the arc rod 32. The No. 6 spring is provided to drive the sliding pin 37 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. The torsion spring is provided to drive the rotating key 38 to rotate and contact the inside of the socket. A No. 7 spring is provided between the sliding card plate 39 and the rear sleeve. The No. 7 spring is provided to drive the square hole to contact the outer wall of the rotating key 38.

[0031] When this embodiment works, the sliding push plate 13 pushes the push rod 21 to move when it moves toward the fixed rod 8. The movement of the push rod 21 pushes the telescopic ring 22 to expand toward the ball 4. The expansion of the telescopic ring 22 toward the ball 4 pushes the push rod 23 to move toward 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 insertion rod 26 moves in the direction away from the retaining frame 5. The limit between the inner ring 2 and the retainer 5 is released, so that the retainer 5 and the inner ring 2 are released when the bearing rotates at high speed. At low speed, the retainer 5 is fixed to the inner ring 2 by the insertion rod 26, ensuring the precise positioning of the ball 4. At high speed, the limit between the retainer 5 and the inner ring 2 is released by centrifugal force, thereby improving the maximum 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 to the ball 4 is reduced, and the temperature rise when the speed is too high is significantly reduced.

[0032] When the inner ring 1 2 and the inner ring 2 3 are combined, the front sleeve will contact the rear sleeve, and the front sleeve will drive the rotating card key 38 to move toward the rear sleeve. When the position of the rotating card key 38 coincides with the position of the socket, the torsion spring will drive the rotating card key 38 to insert into the inside of the socket to limit the front sleeve and the rear sleeve, so that the retainer 1 5 and the retainer 2 6 are fixed. When the position of the rotating card key 38 coincides with the position of the square hole, the No. 7 spring will drive the sliding card plate 39 to move toward the direction of the rotating card key 38, and the rotating card key 38 will be inserted into the inner wall of the square hole, and the sliding card plate 39 will strengthen the fixation of the retainer 1 5 and the retainer 2 6. When the insertion rod 26 moves away from the retainer 1 5 When the cam 33 is in the closed position, the cam 33 is in the closed position, and the cam 33 is in the closed position, so ... After the initial positioning of the retainer 1 5 and the retainer 2 6, the sliding card plate 39 is pushed down by the No. 7 spring to embed the square hole of the rotating card key 38, forming an anti-shear structure, which enhances the strength of the retainer to withstand radial loads. The card sleeve 34 applies axial pre-tightening force to the front sleeve and the rear sleeve through the connecting rod 33, eliminating the matching clearance and enhancing the stress that the axial rigidity can withstand. The movement of the arc rod 32 will drive the movement of the circular mouth. When the position of the circular mouth coincides with the position of the upper fixing buckle 35, the upper fixing buckle 35 will be inserted into the circular mouth to limit the arc rod 32. When the position of the circular mouth coincides with the position of the lower fixing buckle 36, the lower fixing buckle 36 will move toward the inner wall of the cylindrical groove. The upper fixing buckle 35 and the lower fixing buckle 36 will fix the arc rod 32. When the upper fixing buckle 35 and the lower fixing buckle 36 move relative to each other, the card slot will be driven to move. When the position of the card slot coincides with the sliding pin 37, the sliding pin 37 will be inserted into the inner wall of the card slot to limit the upper fixing buckle 35 and the lower fixing buckle 36. The arc 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 limits the movement of the arc rod 32, ensuring that it moves within a predetermined range, preventing the arc rod 32 from loosening or offsetting, enhancing the rigidity of the entire structure, and improving the stability and safety of the equipment.

[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0034] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A special-shaped bearing for a high-rotation industrial robot, 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 structure of the surface of the inner ring 2 (3) is consistent with the structure of the surface of the inner ring 1 (2), characterized in that: High-rotation industrial robot special-shaped bearings also include: A ball (4) for reducing the friction effect between the inner ring body and the outer ring (1), disposed between the inner ring body and the outer ring (1); A fixing frame for protecting the ball (4), the fixing frame being composed of a retaining frame 1 (5) and a retaining frame 2 (6), the retaining frame 1 (5) being arranged on a side of the ball (4) close to the inner ring 1 (2), and the retaining frame 2 (6) being arranged on a side of the ball (4) close to the inner ring 2 (3); A connecting strip (7) for connecting the fixing frames, wherein the connecting strip (7) is hinged between the first retaining frame (5), and the second retaining frame (6) is also hinged via the connecting strip (7); A fixing device for clamping the inner ring 1 (2) and the inner ring 2 (3), arranged on the outer wall of the inner ring; A control device for controlling the mutual limitation between the fixing frame and the inner ring body is arranged on the outer wall of the inner ring body; The interlocking device for controlling the mutual fixation of retainer 1 (5) and retainer 2 (6) is arranged on the outer wall of the inner ring body.

2. The high-rotation industrial robot special-shaped bearing according to claim 1, characterized in that: The fixing device comprises a fixing rod (8), a fixing key (9), a rotating rod (10), a sliding rod (11) and a round pin (12), wherein the fixing rod (8) is fixedly mounted on a side of the inner ring 2 (3) close to the inner ring 1 (2), a square groove is provided on a side of the inner ring 1 (2) close to the fixing rod (8), and the fixing rod (8) contacts the inner wall of the square groove, and the fixing key (9) is slidably mounted on a side of the inner ring 1 (2) away from the inner ring 2 (3), a fixing groove is provided on a side of the fixing rod (8) close to the fixing key (9), and the fixing rod (8) is fixedly mounted on a side of the inner ring 1 (2) away from the inner ring 2 (3), and a fixing groove is provided on a side of the fixing key (9). The fixed key (9) contacts the inner wall of the fixed groove, the sliding rod (11) is slidably mounted on the side of the inner ring (2) close to the fixed key (9), one end of the rotating rod (10) is rotatably mounted on the side of the fixed key (9) close to the sliding rod (11), and the other end of the rotating rod (10) is rotatably mounted on the side of the sliding rod (11) close to the fixed key (9), the round pin (12) slides through the outer wall of the sliding rod (11), and a round hole is opened on the side of the inner ring (2) close to the fixed key (9), and the shape of the round pin (12) matches the round hole.

3. The high-rotation industrial robot special-shaped bearing according to claim 2, characterized in that: The fixing device further comprises a sliding push plate (13) and an insert key (14), wherein the sliding push plate (13) is slidably mounted on a side of the inner ring (2) close to the fixed key (9), and the insert key (14) slides through the surface of the sliding push plate (13), and a slot is provided on a side of the inner ring (2) close to the insert key (14), and the insert key (14) contacts the inner wall of the slot.

4. The high-rotation industrial robot special-shaped bearing according to claim 3, characterized in that: A No. 1 spring is provided between the fixed key (9) and the inner ring (2), and a side of the fixed key (9) close to the fixed rod (8) is set as an inclined surface. A No. 2 spring is provided between the round pin (12) and the sliding rod (11), and a No. 3 spring is provided between the insert key (14) and the sliding push plate (13), and a side of the insert key (14) close to the ball (4) is set as an inclined surface.

5. The high-rotation industrial robot special-shaped bearing according to claim 4, characterized in that: The control device comprises a push rod (21), a telescopic ring (22), a push rod (23), a rotating rod (24), a short rod (25) and an insertion rod (26), wherein the push rod (21) is slidably mounted on a side of the inner ring (2) close to the fixed key (9), the telescopic ring (22) is slidably mounted on the inner wall of the inner ring (2), the rotating rod (24) is rotatably mounted on the inner wall of the inner ring (2), the push rod (23) is fixedly mounted on a side of the telescopic ring (22) close to the rotating rod (24), the inner wall of the retaining frame (5) is provided with a sliding groove, the insertion rod (26) is slidably mounted on the inner wall of the inner ring (2), the insertion rod (26) contacts the inner wall of the sliding groove, and the short rod (25) is fixedly mounted on a side of the insertion rod (26) close to the rotating rod (24).

6. The high-rotation industrial robot special-shaped bearing according to claim 5, characterized in that: The telescopic ring (22) is divided into an inner arc ring and an outer arc ring, and 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 pushing rod (23) is rotatably connected to the short rod (25).

7. The high-rotation industrial robot special-shaped bearing according to claim 6, characterized in that: The interlocking device includes a baffle (31), an arc rod (32), a connecting rod (33), a clamping sleeve (34), a rotating clamping key (38) and a sliding clamping plate (39), wherein the baffle (31) is slidably mounted on the inner wall of the retaining frame (5), the arc rod (32) is slidably mounted on the side of the retaining frame (5) close to the baffle (31), the clamping sleeve (34) is composed of a front sleeve and a rear sleeve, the front sleeve is slidably mounted on the outer wall of the retaining frame (5), the rear sleeve is slidably mounted on the outer wall of the retaining frame (6), and one end of the connecting rod (33) is rotatably mounted on the arc rod (32) close to the inner wall of the retaining frame (5). One side of the clamping sleeve (34), the other end of the connecting rod (33) is rotatably mounted on the side of the clamping sleeve (34) close to the arc rod (32), the rotating key (38) is rotatably mounted on the side of the front sleeve away from the connecting rod (33), the sliding card plate (39) is slidably mounted on the side of the rear sleeve away from the connecting rod (33), a socket is opened on the side of the rear sleeve close to the rotating card key (38), the rotating card key (38) contacts the inner wall of the socket, and a square hole is opened on the side of the sliding card plate (39) close to the rotating card key (38), the rotating card key (38) contacts the inner wall of the square hole.

8. The special-shaped bearing for high-rotation industrial robots according to claim 7, characterized in that: The interlocking device further comprises an upper fixing buckle (35), a lower fixing buckle (36) and a sliding pin (37), wherein the upper fixing buckle (35) is slidably mounted on a side of the retaining frame (5) close to the arc rod (32), and the lower fixing buckle (36) is slidably mounted on a side of the retaining frame (5) close to the arc rod (32), and the surface of the arc rod (32) is provided with a circular opening, and the shape of the upper fixing buckle (35) matches the circular opening, and the bottom of the upper fixing buckle (35) is provided with a cylindrical groove, and the shape of the lower fixing buckle (36) matches the cylindrical groove, and the sliding pin (37) is slidably mounted on the top of the arc rod (32), and the upper fixing buckle (35) and the lower fixing buckle (36) are both provided with a card slot on one side close to the sliding pin (37), and the shape of the sliding pin (37) matches the card slot.

9. The high-rotation industrial robot special-shaped bearing according to claim 8, characterized in that: A tension spring is provided between the baffle (31) and the retaining frame (5), a No. 5 spring is provided between the arc rod (32) and the retaining frame (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 card key (38) and the front sleeve, and a No. 7 spring is provided between the sliding card plate (39) and the rear sleeve.

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