Switch cabinet mechanical characteristic monitoring device and installation method thereof

Abstract

The invention discloses a switch cabinet mechanical characteristic monitoring device and an installation method thereof. The switch cabinet mechanical characteristic monitoring device comprises a main shaft connecting clamping jaw, a universal adjusting support and a rotary encoder. The main shaft connecting clamping jaw comprises a clamping jaw main body, an adjusting chuck and a plurality of radial moving clamping jaws; archimedes spiral teeth and an end face bevel tooth part are arranged on the adjusting chuck, a radial rack is arranged on the radial moving clamping jaw, and the end face bevel tooth part is connected with a plurality of adjusting bevel gears in an engaged mode. The main body rear end plate is provided with an encoder connecting cylinder, and the encoder connecting cylinder is provided with an encoder connecting screw. The method further comprises the installation steps of S1 to S5. The main shaft connecting clamping jaw is used for clamping the connected main shaft, the main shaft connecting clamping jaw is connected with the encoder rotating shaft through the encoder connecting cylinder, and the universal adjusting support can be used for installing the rotary encoder; the main shaft connecting clamping jaw can clamp and connect the main shafts with different diameters, can be suitable for monitoring the mechanical characteristics of the main shafts with different diameters, and can greatly reduce the size types of the monitoring device.

Description

Technical Field

[0001] The present invention relates to the field of switch cabinet mechanical characteristic monitoring, and in particular to a switch cabinet mechanical characteristic monitoring device and an installation method thereof. Background Art

[0002] The primary function of a switchgear is to open and close, control, and protect electrical equipment during the power generation, transmission, distribution, and energy conversion processes of a power system. The circuit breaker is the primary electrical component of the switchgear. The mechanical characteristics of a switchgear primarily refer to the circuit breaker's opening and closing times and speeds. To extinguish arcs during closing and opening, circuit breakers are equipped with an energy storage mechanism. This mechanism features a main shaft, fixedly connected to a crank arm, which is connected to an energy storage spring. The main shaft is connected to the closing and opening mechanism. In other words, the spring force of the energy storage spring is transmitted through the main shaft to the closing and opening mechanism. When the spring force is released, the circuit breaker can be quickly closed or opened.

[0003] During the opening and closing and energy storage processes of a circuit breaker, the main shaft of the circuit breaker plays a key role in motion connection. Therefore, traditional monitoring of the main shaft of a circuit breaker generally utilizes a rotary encoder connected to the main shaft of the circuit breaker, and the rotary encoder is then connected to a computer, thereby utilizing a computer system to monitor the main shaft's motion characteristics such as rotational angular velocity, acceleration, and rotation angle during the opening and closing processes, detect the mechanical characteristics of the switch cabinet, and check the opening and closing performance of the switch cabinet. However, the existing monitoring device is not well suited for main shafts of different diameters. Main shafts of different diameters can only be equipped with a separate fixture to connect the main shaft to the encoder shaft. Although the structural principles of the energy storage mechanism of the circuit breaker are roughly the same, the diameter specifications of the main shaft are different. As a result, when detecting the mechanical characteristics of the switch cabinet, there are many specifications of the fixture connecting the main shaft and the encoder shaft, which makes it inconvenient to monitor the mechanical characteristics of the switch cabinet. Therefore, it is necessary to produce a switch cabinet mechanical characteristics monitoring device and an installation method that can be applied to main shafts of different diameters. Summary of the Invention

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a switch cabinet mechanical characteristic monitoring device applicable to different main shaft diameters and an installation method thereof.

[0005] In order to achieve the above-mentioned purpose of the invention, the technical solution adopted by the present invention is as follows: it includes a main shaft connecting claw, a universal adjustment bracket and a rotary encoder, the main shaft connecting claw is used to clamp the main shaft and connect the rotary encoder, and the universal adjustment bracket is used to install the rotary encoder; the main shaft connecting claw includes a claw body, an adjustment chuck and a rear end plate of the main body, the claw body and the rear end plate of the main body are connected to form a accommodating chamber, the adjustment chuck is installed in the accommodating chamber, and a plurality of radially movable radially movable claws are provided on the claw body; one end of the adjustment chuck is provided with an Archimedean spiral tooth, and the other end is provided with a The end face bevel tooth portion, the radial moving claw is provided with a radial rack meshing with the Archimedean spiral teeth, the end face bevel tooth portion is meshed and connected with a number of adjusting bevel gears, the axis of the hexagonal adjusting screw is arranged along the radial direction of the claw body, the adjusting bevel gear is fixedly connected with the hexagonal adjusting screw, and the claw body is provided with a through hole for installing the hexagonal adjusting screw; an encoder connecting cylinder is provided on the rear end plate of the main body, and an encoder connecting screw is provided radially through the encoder connecting cylinder, the encoder connecting cylinder is threadedly connected to the encoder connecting screw, and the encoder connecting screw is used to fasten the encoder shaft.

[0006] Furthermore, the universal adjustment bracket includes a C-shaped outer bracket, an annular inner bracket and an annular mounting sleeve; the inner bracket is fixed to the outer bracket by two external fastening screws, and the mounting sleeve is fixed to the inner bracket by two internal fastening screws; the outer bracket is provided with a first through hole that cooperates with the external fastening screw, and the inner bracket is provided with a first threaded hole that cooperates with the external fastening screw, and the outer fastening screw is threadedly connected to the inner bracket; the inner bracket is provided with a second through hole that cooperates with the internal fastening screw, the internal fastening screw is threadedly connected to the mounting sleeve, and the mounting sleeve is provided with a second screw hole that cooperates with the internal fastening screw; the outer bracket is also provided with a mounting shaft, and the outer bracket and the mounting shaft are designed as one piece.

[0007] Furthermore, compression sleeves are provided on the outside of the outer fastening screw and the inner fastening screw, both end surfaces of the compression sleeves are frosted surfaces, and the compression sleeves are made of aluminum alloy.

[0008] Furthermore, a magnetic meter base is included, and the universal adjustment mechanism is installed on the magnetic meter base through a mounting shaft.

[0009] Furthermore, the large ends of the outer fastening screw and the inner fastening screw are both provided with knobs, and the outsides of the knobs are provided with anti-slip knurling patterns.

[0010] Furthermore, a limiting slide groove for installing the radially movable jaw is provided on the jaw body, the cross section of the limiting slide groove is I-shaped, and two limiting grooves cooperating with the limiting slide groove are provided on the radially movable jaw.

[0011] Furthermore, the radially movable clamping claw is provided with a main shaft clamping portion on the clamping side, the main shaft clamping portion is a serrated portion, and the serrated shape of the serrated portion is a triangle.

[0012] Furthermore, the claw body is connected to the rear end plate of the main body through a number of end plate screws, the claw body is provided with threaded holes that cooperate with the end plate screws, and the rear end plate of the main body is provided with countersunk holes that cooperate with the end plate screws.

[0013] A method for installing a switch cabinet mechanical characteristic monitoring device comprises the following steps: S1. Adhere and fix the rotary encoder to the mounting sleeve of the universal adjustment bracket to install the rotary encoder; S2. Use an internal hexagonal wrench to rotate any internal hexagonal adjusting screw at the outside. The internal hexagonal adjusting screw drives the adjusting bevel gear to rotate. The adjusting bevel gear cooperates with the end bevel gear to drive the adjusting chuck to rotate. The Archimedean spiral teeth drive the radially movable claws to move concentrically away from or closer to each other, thereby clamping the main shaft of the circuit breaker with the moving radially movable claws, thereby achieving a fixed connection between the main shaft connecting claws and the main shaft; S3. Insert the encoder shaft of the rotary encoder into the encoder connecting tube and tighten the encoder shaft with the encoder connecting screw to achieve the preliminary connection between the encoder connecting tube, the main shaft connecting claw, and the main shaft; S4. Fix the universal adjustment bracket to the clamping end of the magnetic base through the mounting shaft, and adjust the positions of the brackets of the magnetic base so that the clamping end of the magnetic base does not affect the normal adjustment of the universal adjustment bracket. Then, magnetically attach the magnetic base to the outside of the circuit breaker box. S5. Adjust the encoder shaft, encoder connecting tube and main shaft to be on the same axis, then tighten the two inner fastening screws and the two outer fastening screws, tighten the mounting sleeve and the inner bracket, fix the position of the mounting sleeve and the rotary encoder, and complete the installation of the switch cabinet mechanical characteristics monitoring device.

[0014] The beneficial effects of the present invention are: The spindle connecting claw of the present invention is used to clamp the connected spindle, and the spindle connecting claw is connected to the encoder shaft through the encoder connecting tube, and the universal adjustment bracket can be used to install the rotary encoder; the spindle connecting claw can clamp and connect spindles of different diameters, and can be suitable for monitoring the mechanical properties of spindles of different diameters, which can greatly reduce the size types of monitoring devices; the spindle connecting claw can collect the mechanical properties of the spindle through the encoder connecting tube and transmit them to the rotary encoder, which facilitates the rotary encoder to monitor the mechanical properties of the spindle.

[0015] The universal adjustment bracket of the present invention can adjust the position of the installation of the rotary encoder. The universal adjustment bracket can be adjusted in a small range so that the encoder shaft, the main shaft connecting claw and the rotation axis of the main shaft are located on the same straight line, which facilitates the rotary encoder to monitor the main shaft efficiently and accurately.

[0016] The adjustment principle of the main shaft connecting clamping jaws of the present invention is simple. The adjusting bevel gear is driven to rotate by an external hexagonal wrench, and the adjusting bevel gear drives the adjusting chuck to rotate through the end bevel tooth part. The Archimedean spiral teeth of the adjusting chuck drive the radial rack of the radially movable clamping jaw to move, thereby realizing the synchronous clamping and loosening of multiple radially movable clamping jaws, making it convenient to use multiple radially movable clamping jaws to clamp different diameters. The adjusting chuck has a good self-locking effect and can cooperate with multiple radially movable clamping jaws to firmly clamp the main shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the installation of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention; Figure 3 It is a schematic diagram of the overall structure of the present invention in another direction; Figure 4 It is a structural diagram of the universal adjustment bracket; Figure 5 Schematic diagram of the structure of the main shaft connecting claw Figure 1 ; Figure 6 Schematic diagram of the structure of the main shaft connecting claw Figure 2 ; Figure 7 This is the front view of the main shaft connecting claw; Figure 8 for Figure 7 AA section view in; Figure 9 Structural diagram of the main shaft connecting claw with the main body removed Figure 1 ; Figure 10 Structural diagram of the main shaft connecting claw with the main body removed Figure 2 ; The symbols of the components are as follows: 1. Spindle connecting jaw; 11. Clamping jaw body; 12. Radially movable jaw; 121. Radial rack; 122. Spindle clamping portion; 123. Limiting groove; 13. Adjusting chuck; 131. Archimedean screw gear; 132. End bevel gear portion; 14. Main body rear end plate; 15. Adjusting bevel gear; 17. Hexagon socket adjusting screw; 18. Encoder connecting cylinder; 19. Encoder connecting screw; 10. End plate screws; 2. Universal adjustment bracket; 21. Outer bracket; 22. Inner bracket; 23. Mounting sleeve; 24. Inner fastening screw; 25. Outer fastening screw; 26. Pressing sleeve; 27. Mounting shaft; 3. Rotary encoder; 4. Encoder shaft; 5. Spindle. DETAILED DESCRIPTION

[0018] The specific embodiments of the present invention are described below to facilitate understanding of the present invention by those skilled in the art. However, it should be clear that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the appended claims, these changes are obvious, and all inventions and creations utilizing the concepts of the present invention are protected.

[0019] like Figure 1 、 2 As shown in Figure 3, the switchgear mechanical characteristics monitoring device is used in conjunction with the main shaft 5 of the circuit breaker. The switchgear mechanical characteristics monitoring device includes a main shaft connecting claw 1, a universal adjustment bracket 2, and a rotary encoder 3. The main shaft connecting claw 1 is used to clamp the main shaft 5 and connect the rotary encoder 3, and the universal adjustment bracket 2 is used to install the rotary encoder 3. The universal adjustment bracket 2 can be used to adjust the position of the rotary encoder 3 within a small range, facilitating the rapid installation of the rotary encoder 3. It also aligns the rotation axes of the encoder shaft 4, the main shaft connecting claw 1, and the main shaft 5 to the same axis, thereby adjusting the rotary encoder 3 to the optimal working position and facilitating the collection and feedback of the mechanical characteristics of the main shaft 5 to the rotary encoder 3.

[0020] like Figure 4 As shown, the universal adjustment bracket 2 includes a C-shaped outer bracket 21, an annular inner bracket 22, and an annular mounting sleeve 23. The inner bracket 22 is secured to the outer bracket 21 via two external fastening screws 25, while the mounting sleeve 23 is secured to the inner bracket 22 via two internal fastening screws 24. The outer bracket 21 is provided with a first through-hole that mates with the external fastening screws 25, while the inner bracket 22 is provided with a first threaded hole that mates with the external fastening screws 25. The external fastening screws 25 are threadedly connected to the inner bracket 22. The inner bracket 22 is provided with a second through-hole that mates with the internal fastening screws 24. The internal fastening screws 24 are threadedly connected to the mounting sleeve 23, while the mounting sleeve 23 is provided with a second screw hole that mates with the internal fastening screws 24. The two external fastening screws 25 secure the inner bracket 22 in place, while the two internal fastening screws 24 secure the mounting sleeve 23 in place, thereby securing the rotary encoder 3 on the mounting sleeve 23. A clamping sleeve 26 is provided on the outside of the outer fastening screw 25 and the inner fastening screw 24. Both end surfaces of the clamping sleeve 26 are frosted surfaces. The clamping sleeve 26 is made of aluminum alloy. The clamping sleeve 26 is squeezed by the outer fastening screw 25 and the inner fastening screw 24. The two frosted surfaces of the clamping sleeve 26 can be used to frictionally fix the outer bracket 21 and the inner bracket 22, thereby fastening and fixing the positions of the outer bracket 21 and the inner bracket 22.

[0021] The outer bracket 21 is also provided with a mounting shaft 27, which is perpendicular to the radial direction of the raised apex of the outer bracket 21. This ensures that the mounting shaft 27 provides a more balanced support force on the outer bracket 21. The outer bracket 21 and mounting shaft 27 are integrally designed and also include a magnetic base. The universal adjustment mechanism 3 is mounted on the magnetic base via the mounting shaft 27. The magnetic base is a conventional product and is commonly used to mount dial indicators. The diameter of the mounting shaft 27 can be set to 8 mm to accommodate currently available magnetic bases. The mounting shaft 27 is inserted and fixed within the clamping portion of the magnetic base, which is then magnetically attached to the switchgear cabinet structure. Alternatively, a magnetic iron plate can be adhesively fixed to the desired location. The iron plate is attached to the desired location similar to the adhesive hook used in the prior art. The magnetic base is then attached to the iron plate. This allows the magnetic base to be fixed in a more suitable position, making installation of the monitoring device convenient and flexible.

[0022] like Figure 5 、 6As shown in Figures 7, 8, 9 and 10, the spindle connecting jaw 1 includes a cylindrical jaw body 11, an adjusting chuck 13 and a disc-shaped main body rear end plate 14. The jaw body 11 and the main body rear end plate 14 are connected to form a receiving chamber. The adjusting chuck 13 is installed in the receiving chamber. The adjusting chuck 13 can rotate on the jaw body 11. The jaw body 11 is provided with a plurality of radially movable jaws 12. In this embodiment, four radially movable jaws 12 are preferably provided, and the four radially movable jaws 12 are evenly distributed on the jaw body 11. An Archimedean spiral tooth 131 is provided at one end of the adjustment chuck 13, and an end bevel tooth portion 132 is provided at the other end. A radial rack 121 is provided on the radially movable jaw 12, which meshes with the Archimedean spiral tooth 131. The end bevel tooth portion 132 is meshedly connected to a plurality of adjustment bevel gears 15. The axis of a hexagonal adjusting screw 17 is arranged radially along the jaw body 11. The adjustment bevel gear 15 is fixedly connected to the hexagonal adjusting screw 17. Rotating the hexagonal adjusting screw 17 with an hexagonal wrench thereby drives the adjustment bevel gear 15. A through hole for mounting the hexagonal adjusting screw 17 is provided in the jaw body 11. The distance between each adjacent revolution of the Archimedean spiral tooth 131 is constant, thereby enabling the Archimedean spiral tooth 131 to cooperate with the radial rack 121, achieving synchronous movement of the plurality of radially movable jaws 12 with the radially mating rack. An encoder connecting tube 18 is provided on the rear end plate 14 of the main body. An encoder connecting screw 19 is provided radially through the encoder connecting tube 18 and is threadedly connected to the encoder connecting screw 19. The encoder connecting screw 19 is used to tighten the encoder rotating shaft 4. The hexagonal adjusting screw 17 is rotated with an external hexagonal wrench. The hexagonal adjusting screw 17 drives the adjusting bevel gear 15 to rotate. The adjusting bevel gear 15 drives the end bevel gear portion 132 to rotate. The adjusting chuck 13 drives the movement of the plurality of radially movable jaws 12 via the Archimedean screw teeth 131. The radially movable jaws 12 move away from or toward each other simultaneously along the same center of the circle. The plurality of radially movable jaws 12 cooperate to achieve a clamping connection to the main shaft 5.

[0023] In this embodiment, the outer and inner fastening screws 25 and 24 are each provided with a knob at their larger ends, and the outer ends of the knobs are provided with a non-slip knurled pattern. The knobs are used to rotate the outer and inner fastening screws 25 and 24, thereby facilitating the use of the outer and inner fastening screws 25 and 24 to secure the outer and inner brackets 21 and 22.

[0024] In this embodiment, the claw body 11 is provided with a limiting groove for mounting the radially movable claw 12. The limiting groove has an I-shaped cross-section, and the radially movable claw 12 is provided with two limiting grooves 123 that cooperate with the limiting groove. The radially movable claw 12 can be fixed to the claw body 11 by the I-shaped limiting groove. At the same time, the limiting groove 123 on the radially movable claw 12 can cooperate with the limiting groove to enable the radially movable claw 12 to move in the radial direction.

[0025] In this embodiment, the radially moving claw 12 is provided with a spindle clamping portion 122 on the clamping side. The spindle clamping portion 122 is a serrated portion, and the serrated shape of the serrated portion is triangular. The triangular serrated spindle clamping portion 122 can increase the pressure on the spindle 5, thereby making the connection between the spindle 5 and the spindle connecting claw 1 more secure, thereby better feeding back the mechanical properties of the spindle 5 to the rotary encoder 3.

[0026] In this embodiment, the jaw body 11 is connected to the main body rear end plate 14 by a plurality of end plate screws 10. The jaw body 11 is provided with threaded holes that cooperate with the end plate screws 10, and the main body rear end plate 14 is provided with countersunk holes that cooperate with the end plate screws 10. The main body rear end plate 14 is fixed to the jaw body 11 by the plurality of end plate screws 10, which facilitates the disassembly and maintenance of the spindle connection jaw 1.

[0027] A method for installing a switch cabinet mechanical characteristic monitoring device comprises the following steps: S1. Adhere and fix the rotary encoder 3 to the mounting sleeve 23 of the universal adjustment bracket 2 to achieve the installation of the rotary encoder 3; S2. Use an internal hexagonal wrench to rotate the internal hexagonal adjusting screw 17 at any position. The internal hexagonal adjusting screw 17 drives the adjusting bevel gear 15 to rotate. The adjusting bevel gear 15 cooperates with the end bevel gear portion 132 to drive the adjusting chuck 13 to rotate. The Archimedean spiral teeth 131 drive the plurality of radially movable claws 12 to move concentrically away from or closer to each other, thereby clamping the main shaft 5 of the circuit breaker using the moving radially movable claws 12, thereby achieving a fixed connection between the main shaft connecting claw 1 and the main shaft 5; S3. Insert the encoder shaft 4 of the rotary encoder 3 into the encoder connecting cylinder 18 and tighten the encoder shaft 4 with the encoder connecting screw 19 to achieve the preliminary connection between the encoder connecting cylinder 18, the spindle connecting claw 1, and the spindle 5; S4. Fix the universal adjustment bracket 2 to the clamping end of the magnetic base through the mounting shaft 27, and adjust the positions of the brackets of the magnetic base so that the clamping end of the magnetic base does not affect the normal adjustment of the universal adjustment bracket 2. Then, magnetically attach the magnetic base to the outside of the circuit breaker box. S5. Adjust the encoder shaft 4, encoder connecting tube 18 and main shaft 5 to be on the same axis, then tighten the two inner fastening screws 24 and the two outer fastening screws 25, and fasten the mounting sleeve 23 and the inner bracket 22 to fix the position of the mounting sleeve 23 and the rotary encoder 3, and complete the installation of the switch cabinet mechanical characteristics monitoring device. Figure 1 As shown, after the switch cabinet mechanical characteristic monitoring device is installed, the mechanical characteristics of the main shaft 5 can be monitored using the rotary encoder 3.

[0028] 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 switch cabinet mechanical characteristic monitoring device, used in conjunction with a main shaft (5) of a circuit breaker, characterized in that: It comprises a main shaft connecting claw (1), a universal adjustment bracket (2) and a rotary encoder (3), wherein the main shaft connecting claw (1) is used to clamp the main shaft (5) and connect the rotary encoder (3), and the universal adjustment bracket (2) is used to install the rotary encoder (3); The spindle connecting claw (1) comprises a claw body (11), an adjusting chuck (13) and a rear end plate (14) of the body, wherein the claw body (11) and the rear end plate (14) of the body are connected to form a receiving chamber, the adjusting chuck (13) is installed in the receiving chamber, and a plurality of radially movable claws (12) are provided on the claw body (11); The adjusting chuck (13) is provided with an Archimedean spiral tooth (131) at one end and an end bevel tooth portion (132) at the other end; the radial movable chuck (12) is provided with a radial rack (121) meshing with the Archimedean spiral tooth (131); the end bevel tooth portion (132) is meshedly connected with a plurality of adjusting bevel gears (15); the axis of the hexagonal adjusting screw (17) is provided along the radial direction of the chuck body (11); the adjusting bevel gear (15) is fixedly connected with the hexagonal adjusting screw (17); and the chuck body (11) is provided with a through hole for mounting the hexagonal adjusting screw (17); An encoder connecting tube (18) is provided on the rear end plate (14) of the main body. An encoder connecting screw (19) is provided radially through the encoder connecting tube (18). The encoder connecting tube (18) is threadedly connected to the encoder connecting screw (19). The encoder connecting screw (19) is used to fasten the encoder shaft (4).

2. The switch cabinet mechanical characteristics monitoring device according to claim 1, characterized in that: The universal adjustment bracket (2) comprises a C-shaped outer bracket (21), an annular inner bracket (22) and an annular mounting sleeve (23); the inner bracket (22) is fixed to the outer bracket (21) by two outer fastening screws (25), and the mounting sleeve (23) is fixed to the inner bracket (22) by two inner fastening screws (24); the outer bracket (21) is provided with a first through hole that cooperates with the outer fastening screw (25), and the inner bracket (22) is provided with a first through hole that cooperates with the outer fastening screw The outer bracket (21) is provided with a first threaded hole that matches the inner bracket (25), and the outer fastening screw (25) is threadedly connected to the inner bracket (22); the inner bracket (22) is provided with a second through hole that matches the inner fastening screw (24), and the inner fastening screw (24) is threadedly connected to the mounting sleeve (23), and the mounting sleeve (23) is provided with a second screw hole that matches the inner fastening screw (24); the outer bracket (21) is also provided with a mounting shaft (27), and the outer bracket (21) and the mounting shaft (27) are designed as an integral whole.

3. The switch cabinet mechanical characteristics monitoring device according to claim 2, characterized in that: The outer sides of the outer fastening screw (25) and the inner fastening screw (24) are both provided with a compression sleeve (26), both end surfaces of the compression sleeve (26) are frosted surfaces, and the compression sleeve (26) is made of aluminum alloy.

4. The switch cabinet mechanical characteristics monitoring device according to claim 2, characterized in that: It also includes a magnetic meter base, and the universal adjustment mechanism (3) is installed on the magnetic meter base via a mounting shaft (27).

5. The switch cabinet mechanical characteristics monitoring device according to claim 2, characterized in that: The large ends of the outer fastening screw (25) and the inner fastening screw (24) are both provided with knobs, and the outsides of the knobs are provided with anti-slip knurling patterns.

6. The switch cabinet mechanical characteristics monitoring device according to claim 1, characterized in that: The clamping claw body (11) is provided with a limiting slide groove for installing the radially movable clamping claw (12), the cross section of the limiting slide groove is I-shaped, and the radially movable clamping claw (12) is provided with two limiting grooves (123) that cooperate with the limiting slide groove.

7. The switch cabinet mechanical characteristics monitoring device according to claim 1, characterized in that: The radially movable clamping claw (12) is provided with a main shaft clamping portion (122) on the clamping side, and the main shaft clamping portion (122) is a sawtooth portion, and the sawtooth shape of the sawtooth portion is triangular.

8. The switch cabinet mechanical characteristics monitoring device according to claim 1, characterized in that: The clamping claw body (11) is connected to the rear end plate (14) of the main body via a plurality of end plate screws (10); the clamping claw body (11) is provided with threaded holes that cooperate with the end plate screws (10); and the rear end plate (14) of the main body is provided with countersunk holes that cooperate with the end plate screws (10).

9. A method for installing the switch cabinet mechanical characteristics monitoring device according to any one of claims 1 to 8, characterized in that: The steps include: S1, bonding and fixing the rotary encoder (3) to the mounting sleeve (23) of the universal adjustment bracket (2) to achieve the installation of the rotary encoder (3); S2. Use an internal hexagonal wrench to rotate the internal hexagonal adjusting screw (17) at any position externally, the internal hexagonal adjusting screw (17) drives the adjusting bevel gear (15) to rotate, the adjusting bevel gear (15) cooperates with the end bevel gear portion (132) to drive the adjusting chuck (13) to rotate, and the Archimedean spiral teeth (131) drive the plurality of radially movable claws (12) to move concentrically away from or close to each other, thereby clamping the main shaft (5) of the circuit breaker using the plurality of radially movable claws (12), thereby achieving a fixed connection between the main shaft connecting claw (1) and the main shaft (5); S3, inserting the encoder shaft (4) of the rotary encoder (3) into the encoder connecting tube (18), and fastening the encoder shaft (4) with the encoder connecting screw (19), thereby achieving a preliminary connection among the encoder connecting tube (18), the main shaft connecting claw (1), and the main shaft (5); S4. Fix the universal adjustment bracket (2) to the clamping end of the magnetic base through the mounting shaft (27), and adjust the positions of the brackets of the magnetic base so that the clamping end of the magnetic base does not affect the normal adjustment of the universal adjustment bracket (2), and then magnetically adsorb the magnetic base to the outside of the circuit breaker box; S5. Adjust the encoder shaft (4), the encoder connecting tube (18) and the main shaft (5) so that they are displaced on the same axis, then tighten the two inner fastening screws (24) and the two outer fastening screws (25), and tighten the mounting sleeve (23) and the inner bracket (22) to fix the positions of the mounting sleeve (23) and the rotary encoder (3), thereby completing the installation of the switch cabinet mechanical characteristic monitoring device.

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