Primary and secondary fusion complete column-mounted circuit breaker convenient to install

By using a rotation adjustment mechanism and an infrared calibration system, the problem of offset calibration during pole-mounted circuit breaker installation was solved, enabling rapid and accurate installation of the circuit breaker and improving installation efficiency and service life.

CN120878508AInactive Publication Date: 2025-10-31CHUANLI ELECTRIC CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202511211787.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-28
Publication Date
2025-10-31
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The installation of existing pole-mounted circuit breakers requires close cooperation between workers at both the high altitude and the ground. The installation process is cumbersome and difficult to calibrate quickly, which affects installation efficiency and service life.

Method used

An adjustment and calibration device is adopted, including a rotation adjustment mechanism and an infrared calibration system. The circuit breaker body is kept parallel to the pole by an infrared transmitter and receiver, and the offset position of the circuit breaker is adjusted by the rotation adjustment mechanism, which simplifies the installation process and improves the calibration accuracy.

Benefits of technology

It enables rapid and accurate installation of the circuit breaker body, reduces repetitive work, improves installation efficiency and service life, reduces wear and vibration, and simplifies the maintenance process.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN120878508A_ABST
    Figure CN120878508A_ABST
Patent Text Reader

Abstract

The invention relates to an easy-to-install primary and secondary fusion complete column-mounted circuit breaker, and relates to the technical field of circuit breakers, the easy-to-install primary and secondary fusion complete column-mounted circuit breaker comprises an electric pole, an installation frame is arranged on the electric pole, a circuit breaker body is arranged on the installation frame, and an adjusting device and a calibration device are further arranged on the installation frame, the calibration device enables a high-altitude worker to observe whether the circuit breaker body deviates or not, the adjusting device adjusts the deviation of the circuit breaker body, the circuit breaker installation and calibration working process can be effectively simplified, the worker can conveniently install the circuit breaker body, and therefore the working efficiency is improved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This application relates to the field of circuit breaker technology, and in particular to a primary and secondary integrated pole-mounted circuit breaker that is easy to install. Background Technology

[0002] With the rapid development of my country's economy and the continuous increase in power supply, especially with the increasing dependence of various customers on electricity, pole-mounted circuit breakers are often used on the interconnection, sectionalizing and branch lines of the power grid to improve the reliability of power supply.

[0003] In related technologies, the installation of pole-mounted circuit breakers requires the installation of supports on the pole first, followed by the placement of the circuit breaker on the supports. The circuit breaker must be parallel to the pole or meet specific installation angle requirements. To ensure the installation angle meets these requirements, a theodolite or laser level is typically used for calibration. This calibration process requires close cooperation between personnel at both the high altitude and on the ground, making it a complex and time-consuming process. Summary of the Invention

[0004] To facilitate installation by staff, this application provides an easy-to-install integrated primary and secondary pole-mounted circuit breaker.

[0005] This application provides a convenient-to-install integrated primary and secondary pole-mounted circuit breaker with the following technical solution: A convenient, integrated primary and secondary pole-mounted circuit breaker includes a pole, a mounting bracket on the pole, a circuit breaker body mounted on the mounting bracket, and further mounting elements on the mounting bracket. The regulating device includes a regulating box, and an arc-shaped locking block is provided on the circuit breaker body. The locking block is inserted into the regulating box and rotatably connected to the regulating box. A rotation regulating mechanism is provided inside the regulating box, and the rotation regulating mechanism is used to drive the locking block to rotate inside the regulating box. The calibration device includes a calibration frame mounted on the circuit breaker body, which is fitted over the pole. An infrared receiver is detachably connected to the calibration frame. An infrared transmitter parallel to its own axis is detachably connected to the bottom of the pole. The infrared transmitter emits infrared light toward the top of the pole. After installation, the infrared transmitter illuminates the infrared receiver and the two are on the same straight line. At the same time, the calibration frame abuts against the surface of the pole.

[0006] By adopting the above technical solution, after the circuit breaker body is snapped and fixed on the mounting frame, workers at height can adjust the offset position of the circuit breaker body by rotating the adjustment mechanism and making the calibration frame abut against the surface of the pole to calibrate the offset of the circuit breaker body. In addition, by observing the position of the infrared light emitted by the infrared transmitter illuminating the infrared receiver, the position of the circuit breaker body can be further adjusted to ensure that workers at height can quickly calibrate the installation direction of the circuit breaker body, effectively reducing repetitive work and making it easier for workers to install the circuit breaker body.

[0007] In addition, by rotating the circuit breaker body on the adjustment box, the overall height of the circuit breaker body is prevented from changing after the adjustment is offset, which facilitates the subsequent maintenance of the circuit breaker body by the staff.

[0008] This application uses dual calibration to prevent misalignment of the circuit breaker body during installation, which can effectively improve the service life of the circuit breaker body. In addition, the adjustment device makes it convenient for staff to adjust the misalignment of the circuit breaker body, which can effectively improve work efficiency.

[0009] Optionally, the adjusting device includes multiple adjusting rods, one end of which is equipped with a shock-absorbing spring. The shock-absorbing spring is covered with a protective sleeve, and the protective sleeve is equipped with an arc-shaped block. The arc-shaped block is rotatably connected to the circuit breaker body.

[0010] By adopting the above technical solution, the wear between the adjusting rod and the circuit breaker body can be effectively reduced when adjusting the circuit breaker body. In addition, the vibration of the circuit breaker body can be reduced when the circuit breaker body and the adjusting rod are connected by the shock-absorbing spring.

[0011] Optionally, the rotation adjustment mechanism includes a first bevel gear sleeved on the adjustment rod, the first bevel gear being slidably connected to the adjustment rod, and a first rack meshing with the first bevel gear between two adjacent first bevel gears that are close to each other. After the first rack rotates, it drives the adjustment rods located at both ends of it to move closer to or further away from the adjustment box, and the adjustment rods at both ends of the first rack move in opposite directions.

[0012] By adopting the above technical solution, when the first toothed rod rotates, the two adjusting rods set in the width direction of the circuit breaker body move in opposite directions, and the circuit breaker body rises on one side in the width direction while the other side falls, thereby realizing that the circuit breaker body can rotate in the width direction on the adjusting box.

[0013] Optionally, a second rack that meshes with the first bevel gear is provided between two adjacent first bevel gears that are far apart, and the axes of the first rack and the second rack are perpendicular to each other. After the second rack rotates, it drives the adjusting rods located at both ends of it to move synchronously toward or away from the adjusting box.

[0014] By adopting the above technical solution, the offset rotation direction of the same side of the circuit breaker body can be the same, which can effectively reduce the workload of the staff for adjustment, and at the same time, it can effectively facilitate the staff to adjust the offset angle of the circuit breaker body.

[0015] Optionally, a first rotating rod is rotatably connected to the regulating box, and a second bevel gear that meshes with one of the first bevel gears is provided on the first rotating rod. A locking element for limiting its own rotation is also provided on the first rotating rod.

[0016] By adopting the above technical solution, the operator can adjust the offset of the circuit breaker body in the width direction by manipulating the rotating rod, and fix it with locking parts after adjustment, which can effectively simplify the operator's work and improve work efficiency.

[0017] Optionally, the rotation adjustment mechanism includes several adjustment plates slidably connected in the adjustment box, at least two adjustment rods threadedly connected to the adjustment plates, and push rods rotatably connected in the adjustment box corresponding to the number of adjustment plates. A cam is sleeved on the push rod, and two adjacent push rods are linked by a belt. One of the push rods is provided with a second rotation rod that penetrates the side wall of the adjustment box, and the second rotation rod is provided with a locking element for limiting its own rotation.

[0018] By adopting the above technical solution, the operator can control the cam to push the adjustment plate by manipulating the second rotating hole, thereby realizing the offset adjustment of the circuit breaker body in the length direction. At the same time, it is convenient for the operator to operate and reduces the difficulty of the offset adjustment of the circuit breaker body.

[0019] Optionally, the regulating box is provided with an arc-shaped snap-fit ​​groove, the inner wall of the snap-fit ​​groove is provided with a magnetic sheet, the snap-fit ​​block is made of metal and abuts against the inner wall of the snap-fit ​​groove, and a first clamp is rotatably connected to the regulating box. After the first clamp is closed, it is sleeved on the surface of the snap-fit ​​block, and the first clamp is snapped and fixed to the snap-fit ​​block.

[0020] By adopting the above technical solution, the magnetic force between the magnetic sheet and the metal snap-fit ​​block can effectively improve the connection between the circuit breaker body and the regulating box. In addition, the first clamp further fixes the snap-fit ​​block to the regulating box, which can effectively facilitate the workers to install the circuit breaker body on the regulating box, thereby improving the workers' work efficiency.

[0021] Optionally, the circuit breaker body is rotatably connected with a number of second clamps corresponding to the adjusting rod. After the second clamps are closed, they are fitted onto the surface of the arc-shaped block, and the second clamps are engaged and fixed with the arc-shaped block.

[0022] By adopting the above technical solution, the adjusting rod is connected to the circuit breaker body through the second clamp, which can effectively improve the connection between the circuit breaker body and the regulating box and prevent the adjusting rod from falling off the circuit breaker body.

[0023] Optionally, the infrared receiver is in the shape of a tube and is installed through the calibration frame. The inner wall of the infrared receiver is provided with a diffuse reflection layer, and a positioning receiving plate is provided at the end of the infrared receiver away from the infrared transmitter.

[0024] By adopting the above technical solution, when the infrared transmitter shines on the diffuse reflection layer, the infrared receiver can emit light to indicate the offset of the circuit breaker body to the high-altitude workers. After the offset adjustment is completed, the positioning receiver board can receive the red light from the infrared transmitter, which facilitates the calibration work of the high-altitude workers.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. This application sets up an adjustment device and a calibration device, wherein the calibration device enables high-altitude workers to observe whether the circuit breaker body has shifted, and the adjustment device can adjust the shift of the circuit breaker body, which can effectively simplify the circuit breaker installation and calibration process, thereby making it easier for workers to install the circuit breaker body. 2. This application uses dual calibration to avoid misalignment during circuit breaker installation, which can effectively improve the service life of the circuit breaker body. In addition, the adjustment device makes it convenient for staff to adjust the misalignment of the circuit breaker body, which can effectively improve work efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a structural schematic diagram of the present application, mainly showing the adjustment device; Figure 3 yes Figure 2 A magnified view of part A in the middle; Figure 4 yes Figure 1 A schematic diagram of the cross-sectional structure along plane AA; Figure 5 yes Figure 4 A magnified view of part B in the middle section; Figure 6 yes Figure 1 A cross-sectional structural diagram along the BB surface, mainly showing the snap-fit ​​block.

[0027] Figure Descriptions: 1. Pole; 2. Mounting bracket; 3. Circuit breaker body; 4. Adjustment device; 401. Adjustment box; 402. Push rod; 403. Cam; 404. Linkage belt; 405. Second rotating rod; 406. Adjustment plate; 407. Adjustment rod; 408. First bevel gear; 409. First rack; 410. Second rack; 411. First rotating rod; 412. Second bevel gear; 413. Shock-absorbing spring; 414. Protective sleeve 415. Cylinder; 416. Arc-shaped block; 5. Clamping block; 5. Calibration device; 501. Calibration frame; 5011. Calibration plate; 5012. Calibration page; 502. Infrared receiver; 503. Infrared transmitter; 6. Adjustment cavity; 7. Locking component; 701. Locking ring; 702. Locking rod; 703. Locking tube; 704. Anti-slip leather sleeve; 705. Rubber ring; 8. Locking groove; 9. Arc-shaped groove; 10. First clamp; 11. Second clamp. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1 - Appendix Figure 6 This application will be described in further detail below.

[0029] A simple-to-install integrated primary and secondary pole-mounted circuit breaker, refer to Figure 1 The system includes a pole 1, a mounting frame 2 fixedly installed on the pole 1, an adjustment device 4 installed on the mounting frame 2, a circuit breaker body 3 installed on the adjustment device 4, and the adjustment device 4 is used to adjust the offset of the circuit breaker body 3. In addition, a calibration device 5 is installed on the circuit breaker body 3 so that workers at height can observe whether the circuit breaker body 3 has shifted.

[0030] Reference Figure 1 , Figure 2 , Figure 3 The adjusting device 4 includes an adjusting box 401 fixedly connected to the mounting bracket 2 by bolts. An adjusting cavity 6 is provided inside the adjusting box 401. Two push rods 402 are rotatably connected to the inner bottom surface of the adjusting cavity 6. The two push rods 402 are respectively located on both sides of the length direction of the adjusting box 401. A cam 403 is axially sleeved on each push rod 402, and the difference in rotation angle between the cams 403 on the two push rods 402 is 90°. Furthermore, a linkage belt 404 is sleeved on the surface of each push rod 402, so that when one push rod 402 rotates, the other push rod 402 rotates synchronously under the action of the linkage belt 404.

[0031] Reference Figure 3 , Figure 4 , Figure 5One of the push rods 402 is fixedly connected to a second rotating rod 405, which passes through the side wall of the regulating box 401. A locking element 7 is provided on the second rotating rod 405, including a locking ring 701 sleeved around the second rotating rod 405. The inner ring of the locking ring 701 is fixedly connected to a locking rod 702 that passes through the second rotating rod 405. Additionally, the outer ring of the locking ring 701 is slidably connected to a locking tube 703, and an anti-slip sleeve 704 is fixedly connected to one end of the locking tube 703 near the regulating box 401. An annular locking groove 8 is formed on the outer surface of the regulating box 401 corresponding to the position of the locking tube 703. A rubber ring 705 is fixedly connected to the inner wall of the locking groove 8. After the locking tube 703 slides, it extends into the rubber ring 705, causing the rubber ring 705 to contact the surface of the anti-slip sleeve 704.

[0032] Reference Figure 3 , Figure 4 Two adjusting plates 406, which abut against the cam 403, are slidably connected within the adjusting cavity 6. The axes of the adjusting plates 406 are parallel to the axis of the adjusting box 401 in the width direction, and each adjusting plate 406 is located on the upper side of the corresponding push rod 402. Two adjusting rods 407 are threadedly connected to each adjusting plate 406, and the two adjusting rods 407 are arranged on both sides of the length direction of the adjusting plate 406. At the same time, a first bevel gear 408 is axially sleeved on each adjusting rod 407 and slidably connected to the surface of the adjusting rod 407. A first gear 409, which is rotatably connected to the adjusting box 401, is provided between the two adjusting rods 407 located on the same adjusting plate 406. The two ends of the first gear 409 mesh with the adjacent first bevel gear 408. When the first gear 409 rotates, the first bevel gears 408 at both ends rotate synchronously, causing the two adjusting rods 407 to slide in opposite directions.

[0033] A second rack 410 is rotatably connected inside the regulating box 401. The axial direction of the second rack 410 is parallel to the axial direction of the length of the regulating box 401, and the second rack 410 is located between the regulating rods 407 on the same side of the two regulating plates 406. The two ends of the second rack 410 mesh with two adjacent first bevel gears 408. When the second rack 410 rotates, the first bevel gears 408 at both ends rotate synchronously, causing the two regulating rods 407 to slide in the same direction.

[0034] The regulating box 401 is rotatably connected to the first rotating rod 411 on the same side as the second rotating rod 405, and one end of the first rotating rod 411 extends into the regulating box 401. The first rotating rod 411 is fixedly connected to a second bevel gear 412 that meshes with one of the first bevel gears 408. In addition, another locking member 7 is provided on the first rotating rod 411 to limit the rotation angle of the first rotating rod 411, thereby limiting the sliding of the regulating rod 407.

[0035] A shock-absorbing spring 413 is fixedly connected to the end of the adjusting rod 407 away from the adjusting plate 406. A protective sleeve 414 is fixedly connected to the end of the shock-absorbing spring 413 away from the adjusting plate 406, and the shock-absorbing spring 413 is connected to the bottom of the protective sleeve 414. At the same time, the inner surface of the protective sleeve 414 abuts against the surface of the adjusting rod 407.

[0036] An arc-shaped block 415 is fixedly connected to the end of the protective sleeve 414 away from the adjusting rod 407. Simultaneously, an arc-shaped groove is provided on the circuit breaker body 3 for the arc-shaped block 415 to extend into. A second clamp 10 is rotatably connected to the circuit breaker body 3 at the arc-shaped groove, and both ends of the second clamp 10 are fixed by bolts. The second clamp 10 is fitted onto the surface of the arc-shaped block 415. The minimum arc diameter formed by the cross-section of the second clamp 10 after it is closed is smaller than the maximum arc diameter of the arc-shaped block 415, thereby securing the arc-shaped block 415.

[0037] Reference Figure 3 , Figure 6 A circular arc-shaped metal locking block 416 is fixedly connected to the side of the circuit breaker body 3 near the regulating box 401. Simultaneously, the regulating box 401 has an arc-shaped locking groove for inserting the locking block 416. A magnetic sheet is fixedly connected to the inner wall of the locking groove. The locking block 416 is inserted into the regulating box 401 and rotatably connected to it. A first clamp 9 is rotatably connected to the regulating box 401 at the locking groove, and both ends of the first clamp 9 are fixed by bolts. The first clamp 9 is fitted onto the surface of the locking block 416, and the minimum arc diameter formed by the cross-section of the first clamp 9 after closing is smaller than the maximum arc diameter of the locking block 416, thereby locking the locking block 416 in place.

[0038] Reference Figure 1 The calibration device 5 includes a calibration frame 501 fixedly connected to the circuit breaker body 3. The calibration frame 501 includes a calibration plate 5011 fixedly connected to the circuit breaker body 3. Two arc-shaped calibration pages 5012 are fixedly connected to the calibration plate 5011, and the two calibration pages 5012 are fixed by bolts, so that the arc-shaped inner wall of the calibration page 5012 abuts against the pole 1.

[0039] An infrared receiver 502, detachably mounted in a tubular shape, is installed on the calibration plate 5011. The inner wall of the infrared receiver 502 is provided with a diffuse reflection layer, and a positioning receiving plate is fixedly connected to the end of the infrared receiver 502 furthest from the bottom surface. Simultaneously, an infrared emitter 503, parallel to its own axis, is detachably connected to the bottom surface of the pole 1. The infrared emitter 503 emits infrared light towards the top of the pole 1, and after installation, the infrared emitter 503 illuminates the positioning receiving plate.

[0040] The implementation principle of this embodiment is as follows: Before installing the circuit breaker body 3, an infrared transmitter 503 can be connected to the bottom of the pole 1, and the infrared transmitter 503 should be parallel to the axis of the pole 1. After the circuit breaker body 3 is installed, the operator can observe the contact between the calibration page 5012 and the pole 1 and whether there is red light on the infrared receiver 502, thereby intuitively understanding whether the circuit breaker body 3 is installed in place.

[0041] There is a gap between the calibration page 5012 and the pole 1. Operators can rotate the first rotating rod 411 to control the rotation of the circuit breaker body 3 along the width direction of the regulating box 401, and rotate the second rotating rod 405 to rotate the circuit breaker body 3 along the length direction of the regulating box 401. During adjustment, the fit between the calibration page 5012 and the pole 1 can be observed. If the calibration page 5012 abuts against the pole 1 and the positioning receiver plate emits light, then the circuit breaker body 3 is parallel to the axis of the pole 1.

[0042] In addition, the positioning receiver board can be electrically connected to an external control panel, so that the position of the infrared light shining on the positioning receiver board is displayed on the control panel, which can further accurately determine the offset angle of the circuit breaker body 3.

[0043] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A primary and secondary integrated pole-mounted circuit breaker that is easy to install, comprising a pole (1), a mounting frame (2) provided on the pole (1), and a circuit breaker body (3) provided on the mounting frame (2), characterized in that: The mounting bracket (2) is also provided with The regulating device (4) includes a regulating box (401). The circuit breaker body (3) is provided with an arc-shaped snap-fit ​​block (416). The snap-fit ​​block (416) is inserted into the regulating box (401) and rotatably connected to the regulating box (401). The regulating box (401) is provided with a rotation regulating mechanism. The rotation regulating mechanism is used to drive the snap-fit ​​block (416) to rotate in the regulating box (401). The calibration device (5) includes a calibration frame (501) mounted on the circuit breaker body (3). The calibration frame (501) is fitted over the pole (1). An infrared receiver (502) is detachably connected to the calibration frame (501). An infrared emitter (503) parallel to its own axis is detachably connected to the bottom of the pole (1). The infrared emitter (503) emits infrared light toward the top of the pole (1). After installation, the infrared emitter (503) irradiates the infrared receiver (502) and the two are on the same straight line. At the same time, the calibration frame (501) abuts against the surface of the pole (1).

2. The easy-to-install integrated primary and secondary pole-mounted circuit breaker according to claim 1, characterized in that: The adjusting device (4) includes multiple adjusting rods (407). One end of each adjusting rod (407) is provided with a shock-absorbing spring (413). The shock-absorbing spring (413) is covered with a protective sleeve (414). The protective sleeve (414) is provided with an arc-shaped block (415). The arc-shaped block (415) is rotatably connected to the circuit breaker body (3).

3. The easy-to-install integrated primary and secondary pole-mounted circuit breaker according to claim 2, characterized in that: The rotation adjustment mechanism includes a first bevel gear (408) sleeved on the adjustment rod (407). The first bevel gear (408) is slidably connected to the adjustment rod (407). A first rack (409) meshing with the first bevel gear (408) is provided between two adjacent first bevel gears (408) that are close to each other. After the first rack (409) rotates, it drives the adjustment rods (407) located at both ends of it to move closer to or further away from the adjustment box (401). The adjustment rods (407) at both ends of the first rack (409) move in opposite directions.

4. The easy-to-install integrated primary and secondary pole-mounted circuit breaker according to claim 3, characterized in that: A second rack (410) is provided between two adjacent first bevel gears (408) that are far apart, and the axes of the first rack (409) and the second rack (410) are perpendicular to each other. After the second rack (410) rotates, it drives the adjusting rods (407) located at both ends of it to move synchronously toward or away from the adjusting box (401).

5. A primary and secondary integrated pole-mounted circuit breaker that is easy to install according to claim 4, characterized in that: The regulating box (401) is rotatably connected to a first rotating rod (411), and the first rotating rod (411) is provided with a second bevel gear (412) that meshes with one of the first bevel gears (408). The first rotating rod (411) is provided with a locking member (7) for limiting its own rotation.

6. A primary and secondary integrated pole-mounted circuit breaker that is easy to install according to claim 2, characterized in that: The rotation adjustment mechanism includes several adjustment plates (406) slidably connected in the adjustment box (401), at least two adjustment rods (407) threadedly connected to the adjustment plates (406), and push rods (402) rotatably connected in the adjustment box (401) corresponding to the number of adjustment plates (406). A cam (403) is sleeved on the push rod (402), and two adjacent push rods (402) are linked by a belt. One of the push rods (402) is provided with a second rotating rod (405) penetrating the side wall of the adjustment box (401), and the second rotating rod (405) is provided with a locking member (7) for limiting its own rotation.

7. A primary and secondary integrated pole-mounted circuit breaker that is easy to install according to claim 2, characterized in that: The regulating box (401) is provided with an arc-shaped snap-fit ​​groove. The inner wall of the snap-fit ​​groove is provided with a magnetic sheet. The snap-fit ​​block (416) is made of metal and abuts against the inner wall of the snap-fit ​​groove. The regulating box (401) is rotatably connected with a first clamp (9). After the first clamp (9) is closed, it is sleeved on the surface of the snap-fit ​​block (416). The first clamp (9) and the snap-fit ​​block (416) are snapped and fixed.

8. A primary and secondary integrated pole-mounted circuit breaker that is easy to install according to claim 7, characterized in that: The circuit breaker body (3) is rotatably connected with a number of second clamps (10) corresponding to the adjusting rod (407). After the second clamps (10) are closed, they are sleeved on the surface of the arc block (415), and the second clamps (10) are engaged and fixed with the arc block (415).

9. A primary and secondary integrated pole-mounted circuit breaker that is easy to install according to claim 1, characterized in that: The infrared receiver (502) is in the shape of a pipe and is installed through the calibration frame (501). The inner wall of the infrared receiver (502) is provided with a diffuse reflection layer, and a positioning receiving plate is provided at the end of the infrared receiver (502) away from the infrared transmitter (503).