Crossed roller bearing with friction detection function

Abstract

A crossed roller bearing with a friction detection function relates to the technical field of crossed roller bearing equipment, a rotating speed detection mechanism and a transmission mechanism are mounted in a bearing outer ring, the transmission end of the transmission mechanism is connected with the rotating end of the rotating speed detection mechanism, and the transmission end of the transmission mechanism is in contact connection with a bearing inner ring; the transmission mechanism is driven to rotate through the bearing inner ring, and the transmission mechanism drives the rotating speed detection mechanism to work while rotating; according to the crossed roller bearing with the friction detection function, the transmission mechanism is connected with the bearing inner ring, the transmission mechanism is driven to work through rotation of the bearing inner ring, the transmission mechanism drives the rotating speed detection mechanism to work, and the rotating speed of the bearing inner ring is detected through the rotating speed detection mechanism; workers can conveniently confirm friction force generated by the crossed roller bearing according to the rotating speed of the bearing inner ring, and the use state of the crossed roller bearing is judged according to the magnitude of the friction force.

Description

Technical Field

[0001] The present invention relates to the technical field of crossed roller bearing equipment, and in particular to a crossed roller bearing with a friction detection function. Background Art

[0002] When the crossed roller bearing installation equipment is subjected to vibration or jolt, the force generated by the vibration or jolt will be transmitted to the crossed roller bearing, resulting in the inner ring of the crossed roller bearing knocking against the crossed rollers, which easily causes damage to the inner ring wall of the crossed roller bearing or even deformation of the inner ring. When the inner ring wall of the crossed roller bearing is damaged or deformed, the friction force during the rotation of the crossed roller bearing will increase sharply. When the friction force increases, the heat generated during the rotation of the crossed roller bearing will be aggravated. When the heat reaches a certain level, the crossed roller bearing will experience thermal expansion, resulting in the situation that the bearing cannot transmit power or even get stuck. Since the crossed roller bearing is installed inside the equipment, the state of the crossed roller bearing cannot be detected at any time, and each detection requires the equipment to be disassembled, which brings inconvenience to the maintenance of the crossed roller bearing. Summary of the Invention

[0003] In order to overcome the deficiencies in the background art, the present invention discloses a crossed roller bearing with a friction detection function. The present invention is connected to the inner ring of the bearing through a transmission mechanism. The rotation of the inner ring of the bearing drives the transmission mechanism to work. The transmission mechanism drives the speed detection mechanism to work. The speed detection mechanism detects the speed of the inner ring of the bearing, which is convenient for the staff to confirm the friction force generated by the crossed roller bearing according to the speed of the inner ring of the bearing, and judge the use state of the crossed roller bearing according to the magnitude of the friction force.

[0004] In order to achieve the above-mentioned invention purpose, the present invention adopts the following technical solutions: A crossed roller bearing with a friction detection function, including an outer ring of the bearing, and the outer ring of the bearing is connected to the inner ring of the bearing through crossed rollers. A speed detection mechanism and a transmission mechanism are installed inside the outer ring of the bearing, and the transmission end of the transmission mechanism is connected to the rotating end of the speed detection mechanism. The transmission end of the transmission mechanism is in contact connection with the inner ring of the bearing. The inner ring of the bearing drives the transmission mechanism to rotate. While the transmission mechanism is rotating, it drives the speed detection mechanism to work. The speed detection mechanism detects the speed of the inner ring of the bearing, and confirms the friction force received by the crossed rollers through the magnitude of the speed.

[0005] The position of the central axis of the speed detection mechanism coincides with the position of the central axis of the inner ring of the bearing.

[0006] The speed detection mechanism includes a magnetoresistive speed sensor and a permanent magnet ring. The magnetoresistive speed sensor is located on the inner wall of the outer ring of the bearing and is fixedly connected. The permanent magnet ring is located on the transmission end of the transmission mechanism, and the position of the permanent magnet ring corresponds to the position of the magnetoresistive speed sensor.

[0007] The permanent magnet ring is provided with insertion slots which are arranged at equal distances.

[0008] The magnetoresistive speed sensor is located between the inner ring of the bearing and the transmission mechanism, and the upper and lower ends of the magnetoresistive speed sensor do not contact the inner ring of the bearing and the transmission mechanism.

[0009] The transmission mechanism includes a positioning frame, an internally threaded sleeve, a screw, a return spring, a rotating ring, an adjusting rod and a rotating ring. The positioning frame is located on the inner wall of the outer ring of the bearing and is fixedly connected, and the positioning frame is provided with equidistantly arranged mounting grooves, a return spring is fixedly connected in the mounting groove, and one end of the return spring is fixedly connected to the rotating ring, the rotating ring is located on the toggle end of the adjusting rod and is rotatably connected, a sliding groove is provided on the side of the positioning frame close to the permanent magnet ring, and the sliding groove is connected to the mounting groove, a rotating ring is slidably connected in the sliding groove, and the rotating ring is provided with equidistantly arranged connecting grooves, an internally threaded sleeve is fixedly connected to the rotating ring, and the position of the internally threaded sleeve corresponds to and is connected to the position of the connecting groove, a screw is connected to the internal thread of the internally threaded sleeve, and the top end of the screw passes through the insertion groove on the permanent magnet ring and is connected to the permanent magnet ring.

[0010] The installation groove is composed of a groove and a through groove and is connected to each other, and a return spring is installed in the groove, and the through groove is connected to the sliding groove.

[0011] One end of the adjusting rod close to the screw rod is cross-shaped, and one end of the screw rod close to the adjusting rod is provided with a cross-shaped groove.

[0012] The top end of the internal thread sleeve is in contact with the lower surface of the permanent magnet ring.

[0013] The diameter of the inner ring opening of the positioning frame is larger than the diameter of the inner ring opening of the bearing inner ring.

[0014] Due to the adoption of the above technical solution, the present invention has the following beneficial effects: The crossed roller bearing with friction detection function described in the present invention is connected to the inner ring of the bearing through a transmission mechanism, and the transmission mechanism is driven to work by the rotation of the inner ring of the bearing, and the speed detection mechanism is driven to work by the transmission mechanism. The speed detection mechanism detects the speed of the inner ring of the bearing, which makes it convenient for the staff to confirm the friction force generated by the crossed roller bearing according to the speed of the inner ring of the bearing, and judge the use status of the crossed roller bearing according to the size of the friction force. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the three-dimensional structure of the present invention; Figure 2 Cross-sectional view of the present invention; Figure 3 is Figure 2 Enlarged schematic diagram of part A of the present invention; 1. Outer bearing ring; 2. Inner bearing ring; 3. Rotational speed detection mechanism; 301. Magnetoresistive rotational speed sensor; 302. Permanent magnet ring; 4. Transmission mechanism; 401. Positioning frame; 402. Internal thread sleeve; 403. Screw; 404. Return spring; 405. Rotating ring; 406. Adjusting rod; 407. Rotating ring. Detailed implementation mode

[0016] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0017] Combined with the attached Figures 1 to 3 A cross roller bearing with a friction detection function includes an outer bearing ring 1, and the outer bearing ring 1 is connected to the inner bearing ring 2 through cross rollers. A rotational speed detection mechanism 3 and a transmission mechanism 4 are installed in the outer bearing ring 1, and the transmission end of the transmission mechanism 4 is connected to the rotating end of the rotational speed detection mechanism 3. The transmission end of the transmission mechanism 4 is in contact connection with the inner bearing ring 2. The inner bearing ring 2 drives the transmission mechanism 4 to rotate. While the transmission mechanism 4 is rotating, it drives the rotational speed detection mechanism 3 to work. The rotational speed detection mechanism 3 detects the rotational speed of the inner bearing ring 2, and the friction force received by the cross rollers is confirmed through the magnitude of the rotational speed. The kinetic energy theorem formula is: ΔK = W, where ΔK represents the change in kinetic energy, and W represents the total work done by external forces on the object. Considering the work done by the friction force on the object, therefore: W = F*d = f*s, where F represents the friction force, d represents the displacement of the object, and s represents the displacement in the direction of the sliding friction force. Since the object moves on a horizontal plane, d = s. Substituting W into the kinetic energy theorem formula, we get: ΔK = f*s. The change in kinetic energy ΔK of the object can be expressed as: ΔK = 1 / 2*m*(v_f^2 - v_i^2), where m represents the mass of the object, v_i represents the initial velocity of the object, and v_f represents the final velocity of the object. Substituting ΔK into the above formula, we get: 1 / 2·m·(v_f^2 - v_i^2) = f·s. Solving for the friction force f, we get: f = 1 / 2*m*(v_f^2 - v_i^2) / s. The above calculation formula is input into an external control device.

[0018] The position of the central axis of the rotation speed detection mechanism 3 coincides with the position of the central axis of the bearing inner ring 2 .

[0019] The speed detection mechanism 3 includes a magnetoresistive speed sensor 301 and a permanent magnet ring 302. The magnetoresistive speed sensor 301 is located on the inner wall of the bearing outer ring 1 and is fixedly connected. The permanent magnet ring 302 is located on the transmission end of the transmission mechanism 4, and the position of the permanent magnet ring 302 corresponds to the position of the magnetoresistive speed sensor 301. The speed of the permanent magnet ring 302 is detected by the magnetoresistive speed sensor 301, and the detection data is transmitted to the external control device, and the friction force is calculated by the external control device.

[0020] The permanent magnet ring 302 is provided with insertion slots which are arranged at equal intervals.

[0021] The magnetoresistive speed sensor 301 is located between the bearing inner ring 2 and the transmission mechanism 4 , and the upper and lower ends of the magnetoresistive speed sensor 301 are not in contact with the bearing inner ring 2 and the transmission mechanism 4 .

[0022] The transmission mechanism 4 includes a positioning frame 401, an internal threaded sleeve 402, a screw 403, a reset spring 404, a rotating ring 405, an adjusting rod 406 and a rotating ring 407. The positioning frame 401 is located on the inner wall of the bearing outer ring 1 and is fixedly connected, and the positioning frame 401 is provided with mounting grooves arranged equidistantly, the mounting grooves are fixedly connected with the reset spring 404, and one end of the reset spring 404 is fixedly connected with the rotating ring 405, the rotating ring 405 is located on the toggle end of the adjusting rod 406 and is rotatably connected, the toggle end of the adjusting rod 406 is provided with an adjustment groove, and the positioning frame 401 A sliding groove is provided on one side close to the permanent magnet ring 302, and the sliding groove is connected to the mounting groove. A rotating ring 407 is slidably connected in the sliding groove, and the rotating ring 407 is provided with equidistantly arranged connecting grooves. An equidistantly arranged internally threaded sleeve 402 is fixedly connected to the rotating ring 407, and the position of the internally threaded sleeve 402 corresponds to and is connected to the position of the connecting groove. A screw 403 is connected to the internal thread of the internally threaded sleeve 402, and the top end of the screw 403 passes through the insertion groove on the permanent magnet ring 302 and is connected to the permanent magnet ring 302, and a rubber pad is fixedly connected to the top end of the screw 403.

[0023] The installation groove is composed of a groove and a through groove and is connected to each other, and a return spring 404 is installed in the groove, and the through groove is connected to the sliding groove.

[0024] One end of the adjusting rod 406 close to the screw rod 403 is cross-shaped, and one end of the screw rod 403 close to the adjusting rod 406 is provided with a cross-shaped groove.

[0025] The top end of the internal thread sleeve 402 is in contact connection with the lower surface of the permanent magnet ring 302, and the permanent magnet ring 302 is supported by the internal thread sleeve 402.

[0026] The diameter of the inner ring opening of the positioning frame 401 is larger than the diameter of the inner ring opening of the bearing inner ring 2. Neither the positioning frame 401 nor the permanent magnet ring 302 is connected to the equipment transmission shaft, reducing the disassembly trouble.

[0027] When the cross roller bearing with a friction detection function is in use, the staff installs the cross roller bearing into the equipment and connects the bearing inner ring 2 to the transmission shaft of the equipment. The staff presses the adjusting rod 406 to connect the adjusting rod 406 with the screw rod 403. After the adjusting rod 406 is connected to the screw rod 403, the adjusting rod 406 is rotated. The rotation of the adjusting rod 406 drives the screw rod 403 to extend or contract, so that one end of the screw rod 403 is in firm contact with the bearing inner ring 2. When the bearing inner ring 2 rotates, it will drive the screw rod 403 to rotate together. The screw rod 403 drives the permanent magnet ring 302 to rotate. The rotation frequency of the permanent magnet ring 302 is detected by the magnetoresistive type rotational speed sensor 301. The magnetoresistive type rotational speed sensor 301 transmits the detected data to the external control equipment. The external control equipment sorts and calculates the received data and feeds it back to the staff, facilitating the staff to confirm the working state of the cross roller bearing.

[0028] The parts not detailed in the present invention are the prior art. Although the present invention is specifically shown and introduced in combination with the preferred implementation schemes, there are many methods and ways to specifically implement this technical solution. The above is only the preferred implementation mode of the present invention. However, those skilled in the art should understand that various changes can be made to the present invention in terms of form and details without departing from the spirit and scope of the present invention defined by the appended claims, and all of them are within the protection scope of the present invention.

Claims

1. A crossed roller bearing with a friction detection function, comprising an outer bearing ring (1), and the outer bearing ring (1) is internally connected to the inner bearing ring (2) through crossed rollers, and is characterized in that: A rotation speed detection mechanism (3) and a transmission mechanism (4) are installed in the bearing outer ring (1), and the transmission end of the transmission mechanism (4) is connected to the rotation end of the rotation speed detection mechanism (3). The transmission end of the transmission mechanism (4) is in contact with the bearing inner ring (2). The bearing inner ring (2) drives the transmission mechanism (4) to rotate. The transmission mechanism (4) drives the rotation speed detection mechanism (3) to work while rotating. The rotation speed of the bearing inner ring (2) is detected by the rotation speed detection mechanism (3), and the friction force on the cross roller is confirmed by the size of the rotation speed.

2. The crossed roller bearing with a friction detection function according to claim 1, wherein: The position of the central axis of the rotation speed detection mechanism (3) coincides with the position of the central axis of the bearing inner ring (2).

3. The crossed roller bearing with a friction detection function according to claim 1, characterized in that: The rotation speed detection mechanism (3) comprises a magnetoresistive rotation speed sensor (301) and a permanent magnet ring (302); the magnetoresistive rotation speed sensor (301) is located on the inner wall of the bearing outer ring (1) and is fixedly connected; the permanent magnet ring (302) is located on the transmission end of the transmission mechanism (4), and the position of the permanent magnet ring (302) corresponds to the position of the magnetoresistive rotation speed sensor (301).

4. The crossed roller bearing with a friction detection function according to claim 3, characterized in that: The permanent magnet ring (302) is provided with insertion slots arranged at equal distances.

5. The crossed roller bearing with a friction detection function according to claim 3, characterized in that: The magnetoresistive speed sensor (301) is located between the bearing inner ring (2) and the transmission mechanism (4), and the upper and lower ends of the magnetoresistive speed sensor (301) are not in contact with the bearing inner ring (2) and the transmission mechanism (4).

6. The crossed roller bearing with a friction detection function according to claim 1, characterized in that: The transmission mechanism (4) comprises a positioning frame (401), an internally threaded sleeve (402), a screw (403), a reset spring (404), a rotating ring (405), an adjusting rod (406) and a rotating ring (407), wherein the positioning frame (401) is located on the inner wall of the bearing outer ring (1) and is fixedly connected thereto, and the positioning frame (401) is provided with mounting grooves arranged at equal intervals, wherein the reset spring (404) is fixedly connected in the mounting groove, and one end of the reset spring (404) is fixedly connected to the rotating ring (405), and the rotating ring (405) is located on the toggle end of the adjusting rod (406) and is rotatably ... the rotating ring (405) is fixedly connected to the rotating ring (405), and the rotating ring (405) is located on the toggle end of the adjusting rod (406) and is rotatably connected thereto, and the positioning frame (401) is provided with mounting grooves arranged at equal intervals, and the mounting grooves are fixedly connected to the reset spring (404). A sliding groove is provided on one side of the frame (401) close to the permanent magnet ring (302), and the sliding groove is communicated with the mounting groove. A rotating ring (407) is slidably connected in the sliding groove, and the rotating ring (407) is provided with equidistantly arranged communicating grooves. The rotating ring (407) is fixedly connected with equidistantly arranged internal threaded sleeves (402), and the position of the internal threaded sleeves (402) corresponds to and is communicated with the communicating grooves. A screw rod (403) is internally threadedly connected to the internal threaded sleeve (402), and the top end of the screw rod (403) passes through the insertion groove on the permanent magnet ring (302) and is connected to the permanent magnet ring (302).

7. The crossed roller bearing with a friction detection function according to claim 6, characterized in that: The installation groove is composed of a groove and a through groove which are connected to each other, and a return spring (404) is installed in the groove, and the through groove is connected to the sliding groove.

8. The crossed roller bearing with a friction detection function according to claim 6, characterized in that: One end of the adjustment rod (406) close to the screw rod (403) is cross-shaped, and one end of the screw rod (403) close to the adjustment rod (406) is provided with a cross-shaped groove.

9. The crossed roller bearing with a friction detection function according to claim 6, characterized in that: The top end of the internal thread sleeve (402) is in contact connection with the lower surface of the permanent magnet ring (302).

10. The crossed roller bearing with a friction detection function according to claim 6, characterized in that: The diameter of the inner ring opening of the positioning frame (401) is larger than the diameter of the inner ring opening of the bearing inner ring (2).

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