Circuit breaker general assembly precision detection device

Abstract

The utility model discloses a circuit breaker final assembly precision detection device which comprises a chassis, a test frame and a test assembly. The test frame is mounted on one side of the chassis, and the test assembly is mounted above the test frame; a track assembly is arranged on the chassis; the chassis is provided with a guide assembly at one end of the track assembly; the test assembly comprises a mounting substrate, a reference mandrel and a sliding sleeve. The mounting substrate is mounted on the test frame and is vertically arranged; one end of the reference core shaft is installed on the installation substrate and is horizontally arranged, the sliding sleeve is arranged on the reference core shaft in a sliding mode and is locked on the reference core shaft through a locking piece, and a plurality of measuring holes are formed in the circumferential direction of the sliding sleeve. The device has the advantages of simple structure, high detection efficiency, accuracy and the like.

Description

Technical Field

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[0009]

[0001] The utility model mainly relates to the technical field of circuit breakers, and particularly relates to a device for detecting the overall assembly accuracy of a circuit breaker. Background Art

[0002] At present, the GVSQ1-40.5kV circuit breaker supporting the KYN61-40.5kV high-voltage switchgear cabinet has a relatively large volume, with length * width * height = 865 * 1273 * 1600. The assembly accuracy of the 6 contact arms of this type of circuit breaker is very crucial. The main key dimensions include: a distance of 300 ± 0.5, a contact arm height dimension of 1100 ± 0.7 mm, 400 ± 0.5 mm, and the position accuracy of the 6 contact arms relative to the positioning holes in the front end of the 2-φ22 of the moving roller bracket at the bottom of the circuit breaker. These key dimensions directly affect the working position accuracy of the circuit breaker, the magnitude of the in and out torque, the number of meshing contact points between the plum blossom contacts and the static contacts in the cabinet, etc. Overall performance requires quality inspectors to conduct full inspections. Since the inspected dimensions reach 1500 mm, the inspection equipment is very bulky, the detection is very inconvenient, and the detection efficiency is very low. Content of the Utility Model

[0003] In view of the technical problems existing in the prior art, the utility model provides a device for detecting the overall assembly accuracy of a circuit breaker with a simple structure, high detection efficiency and high precision.

[0004] To solve the above technical problems, the technical solution proposed by the utility model is as follows:

[0005] A device for detecting the overall assembly accuracy of a circuit breaker includes a chassis, a test frame and a test component; the test frame is installed on one side of the chassis, and the test component is installed above the test frame; a track component is provided on the chassis; a guiding component is provided at one end of the chassis for the track component; the test component includes a mounting substrate, a reference core shaft and a sliding sleeve; the mounting substrate is installed on the test frame and is arranged vertically; one end of the reference core shaft is installed on the mounting substrate and is arranged horizontally, the sliding sleeve slides on the reference core shaft and is locked on the reference core shaft through a locking member, and a plurality of measuring holes are provided on the circumference of the sliding sleeve.

[0006] As a further improvement of the above technical solution:

[0007] The guiding component includes two guiding taper pins, which are opposite to the track component and are used to adjust the left and right center reference positions of the circuit breaker.

[0008] A ramp guide rail is provided at the front end of the chassis for guiding the circuit breaker onto the track component of the chassis.

[0009] The reference mandrel is provided with an annular positioning groove, and the locking member passes through the sliding sleeve and abuts against the annular positioning groove to lock the sliding sleeve.

[0010] The locking component is a locking bolt.

[0011] The measuring holes are located at the front of the sliding sleeve.

[0012] The number of measuring holes is four, which are evenly distributed at the front of the sliding sleeve.

[0013] The test fixture is a gantry frame welded assembly.

[0014] Compared with the prior art, the advantages of this utility model are:

[0015] The detection device of this utility model is precisely manufactured, with a stable and reliable overall frame and high detection accuracy. For the detection of large dimensions of 1500mm, the accuracy is significantly higher than that of manual measurement by comparing each one with a height ruler. Moreover, the positional accuracy data of the circuit breaker contact arm can be checked in one installation. In addition, compared with the previous detection methods, this detection device can complete the detection of multiple inspection items in one installation, improving efficiency by 4-5 times, and making the detection simple and efficient. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the detection device of this utility model in an embodiment.

[0017] Figure 2 This is a three-dimensional structural diagram of the chassis of this utility model in an embodiment.

[0018] Figure 3 This is a three-dimensional structural diagram of the test fixture of this utility model in an embodiment.

[0019] Figure 4 The following are embodiments of the detection device of this utility model in a specific application: (a) is a perspective view; (b) is a front view; (c) is an enlarged view of the guiding unit at (a); and (d) is an enlarged view of the testing unit at (a).

[0020] Figure 5 The figures show an embodiment of the test unit of this utility model in a specific test application; (a) is a perspective view; (b) is a cross-sectional view.

[0021] Legend: 1. Chassis; 101. Rail assembly; 102. Guide assembly; 1021. Guide cone pin; 103. Inclined guide rail; 2. Test frame; 3. Test assembly; 301. Mounting base plate; 302. Reference mandrel; 303. Sliding sleeve; 304. Locking element; 305. Measuring hole; Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] like Figure 1 As shown, the circuit breaker assembly accuracy testing device provided in this embodiment includes a chassis 1, a test frame 2, and a test assembly 3. The test frame 2 is installed on one side of the chassis 1, and the test assembly 3 is installed above the test frame 2. A track assembly 101 is provided on the chassis 1. A guide assembly 102 is provided at one end of the track assembly 101 on the chassis 1. The test assembly 3 includes a mounting base 301, a reference spindle 302, and a sliding sleeve 303. The mounting base 301 is installed on the test frame 2 and is arranged vertically. One end of the reference spindle 302 is installed on the mounting base 301 and is arranged horizontally. The sliding sleeve 303 is slidably disposed on the reference spindle 302 and locked on the reference spindle 302 by a locking member 304. The sliding sleeve 303 has a plurality of measuring holes 305 in the circumferential direction.

[0024] like Figure 2 As shown, chassis 1 serves as the base and fixed foundation of the entire testing device, and its specific structure is a welded sub-assembly. For example... Figure 3 As shown, the test frame 2 serves as a vertical reference and a fixed base component, and its specific structure is a gantry frame welded assembly. The cabinet entry ramp rail 103 is used to support the circuit breaker entering the chassis 1 on the rail assembly 101, and its specific structure is a rail welded assembly.

[0025] The positioning pin bracket is welded to the chassis 1, and the guide cone pin 1021 is installed on the bracket to simulate the left and right center reference positions of the circuit breaker. The stationary contact mounting base plate 301 is used as the mounting reference for the sliding measurement reference core kit; the test component 3 is a mating component that simulates the circuit breaker, accurately simulating the theoretical positions of the six contact arms. The sliding sleeve 303 on it can slide back and forth, serving as the caliper's detection reference, thereby obtaining specific deviation data values.

[0026] To control the overall accuracy of circuit breakers and improve inspection precision and efficiency, a testing device for the assembly accuracy of the contact arms of the GVSQ1-40.5 circuit breaker was designed and manufactured. With this device, inspection personnel (or assembly and commissioning personnel) first leave the six front-end stud contacts of the circuit breaker uninstalled, exposing the mating positions of the six contact arms. The circuit breaker is then pushed into the testing device, aligning it flush with the six ideal reference axes precisely assembled on the device. Subsequent inspections are all based on these reference axes, allowing for the detection of various errors in the circuit breaker under inspection.

[0027] The usage process is as follows:

[0028] like Figure 4 As shown, first, the sliding sleeve 303 of the test component 3 is retracted to expose the front edge of the reference mandrel 302, as follows. Figure 4 As shown in (d);

[0029] The circuit breaker to be tested is pushed onto the track assembly 101 on the chassis 1 via the ramp guide rail 103. The guide pin 1021 is inserted into the 2-φ22 positioning hole at the bottom of the circuit breaker. When it is close to the test docking plane A ( Figure 4 As shown in (b), slowly push forward until it touches the front edge of the detection reference spindle 302 on surface A, and perform visual inspection. If a large eccentricity is found in the contact arm, it can be directly rejected or reworked. If there is no major abnormality, proceed to the next step to further check the eccentricity value data. Specifically: slide the sliding sleeve 303 out to... Figure 5 At the locations shown, depth data was measured at each of the four measuring holes 305 using a vernier caliper depth probe. Figure 5 As shown in (b), the eccentricity data of the contact arm can be obtained after simple calculation and processing; by repeating the above detection steps multiple times, the detection data of each contact arm can be obtained.

[0030] The accuracy requirements, such as perpendicularity and parallelism, can be obtained by measurement and calculation based on the A reference plane.

[0031] The detection device of this utility model is precisely manufactured, with a stable and reliable overall frame and high detection accuracy. For the detection of large dimensions of 1500mm, the accuracy is significantly higher than that of manual measurement by comparing each one with a height ruler. Moreover, the positional accuracy data of the circuit breaker contact arm can be checked in one installation. In addition, compared with the previous detection methods, this detection device can complete the detection of multiple inspection items in one installation, improving efficiency by 4-5 times, and making the detection simple and efficient.

[0032] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should be considered within its protection scope.

Claims

1. A circuit breaker assembly accuracy testing device, characterized in that, The test assembly includes a chassis (1), a test frame (2), and a test component (3). The test frame (2) is mounted on one side of the chassis (1), and the test component (3) is mounted above the test frame (2). A track assembly (101) is provided on the chassis (1). A guide assembly (102) is provided at one end of the track assembly (101) on the chassis (1). The test component (3) includes a mounting base (301), a reference spindle (302), and a sliding sleeve (303). The mounting base (301) is mounted on the test frame (2) and is arranged vertically. One end of the reference spindle (302) is mounted on the mounting base (301) and is arranged horizontally. The sliding sleeve (303) slides on the reference spindle (302) and is locked to the reference spindle (302) by a locking member (304). The sliding sleeve (303) has multiple measuring holes (305) in the circumferential direction.

2. The circuit breaker assembly accuracy testing device according to claim 1, characterized in that, The guiding assembly (102) includes two guiding cone pins (1021), which are directly opposite the track assembly (101) and are used to adjust the left and right center reference positions of the circuit breaker.

3. The circuit breaker assembly accuracy testing device according to claim 1, characterized in that, The front end of the chassis (1) is provided with a ramp guide rail (103) for guiding the circuit breaker onto the track assembly (101) of the chassis (1).

4. The circuit breaker assembly accuracy testing device according to claim 1, 2, or 3, characterized in that, The reference spindle (302) is provided with an annular positioning groove, and the locking member (304) passes through the sliding sleeve (303) and abuts against the annular positioning groove to lock the sliding sleeve (303).

5. The circuit breaker assembly accuracy testing device according to claim 4, characterized in that, The locking component (304) is a locking bolt.

6. The circuit breaker assembly accuracy testing device according to claim 1, 2, or 3, characterized in that, The measuring holes (305) are located at the front of the sliding sleeve (303).

7. The circuit breaker assembly accuracy testing device according to claim 6, characterized in that, The number of measuring holes (305) is four, which are evenly distributed at the front of the sliding sleeve (303).

8. The circuit breaker assembly accuracy testing device according to claim 1, 2, or 3, characterized in that, The test fixture (2) is a gantry frame welded assembly.

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