Test tool and test power device

Abstract

The utility model belongs to the technical field of switch equipment, and discloses a test tool and a test power device. The test power device comprises a movable block, a fixed block and a test tool, the movable block is arranged at the movable end of the test power device, the fixed block is arranged at the fixed end of the test power device, the test tool comprises a connecting piece, a first limiting piece, a fixed seat and a fastening assembly, one end of the connecting piece can be connected with the movable block, and the other end of the connecting piece is provided with a first slot; at least part of the connector can be inserted into the first inserting groove, the first limiting piece is used for limiting the connector into the first inserting groove, the fixing base is connected with the fixing block, the fastening assembly comprises the first limiting piece and a first fastening piece, and the two sides of the workpiece body and the side, away from the connector, of the workpiece body are fixed to the fixing base through the fastening assembly. Therefore, the stress condition of the connecting arm in the actual use working condition can be simulated, and the accuracy and reliability of the test result are improved.

Description

Technical Field

[0001] This utility model relates to the field of switchgear technology, and in particular to testing fixtures and testing power devices. Background Technology

[0002] The circuit breaker module is one of the core components of gas-insulated metal-enclosed switchgear, and the connecting arm, as an important transmission component of the arc-extinguishing chamber in the circuit breaker module, bears tension and pressure in actual operation. The performance of the connecting arm directly affects the stability and reliability of the circuit breaker operation.

[0003] Currently, traditional tensile testing fixtures typically use clamping the two ends of the connecting arm to perform tensile tests. This method can only perform basic verification of the tensile mechanical properties of the connecting arm material, and cannot simulate the stress conditions of the connecting arm under actual working conditions. It is difficult to comprehensively evaluate the potential impact of the connecting arm's structural design and manufacturing process on its performance, and cannot fully meet the verification requirements for its comprehensive performance.

[0004] Therefore, there is an urgent need for a testing fixture and a testing power device to solve the above problems. Utility Model Content

[0005] One objective of this invention is to provide a testing fixture that can effectively simulate the stress state of the workpiece under actual use conditions, thereby improving the reliability and accuracy of the test results.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A testing fixture, mounted on a testing power unit, is used to connect the workpiece to be tested. The testing power unit includes a moving end and a fixed end. The workpiece to be tested includes a workpiece body and a connector. The testing fixture includes:

[0008] The connector has one end connected to the mobile terminal and the other end provided with a first slot, at least a portion of the connector head being able to be inserted into the first slot;

[0009] A first limiting member is used to limit the connector head to be located within the first slot;

[0010] A fixing base is connected to the fixing end;

[0011] A fastening assembly for fastening both sides of the workpiece body and the side of the workpiece body away from the connector to the fixing base.

[0012] Optionally, the connector includes a first column, the first slot is disposed on the first column, the first column is provided with a first through hole communicating with the first slot in the radial direction, the connector is provided with a first pin hole in the radial direction, the first through hole and the first pin hole are coaxially aligned, and the first limiting member passes through the first through hole and the first pin hole.

[0013] Optionally, the connector further includes a second column, one end of which is connected to the first column and the other end of which is connected to the movable end. The diameter of the second column is smaller than the diameter of the first column, and the connection between the second column and the first column is provided with a first rounded corner structure.

[0014] Optionally, the fastening assembly includes a first fastener, the workpiece body has a first fixing hole on each side, the fixing seat has a second fixing hole on each side, the first fixing hole can be coaxially aligned with its corresponding second fixing hole, and the first fastener passes through the first fixing hole and the second fixing hole in sequence and is fastened.

[0015] Optionally, the fixing seat is provided with a receiving groove, and at least a portion of the workpiece body is located in the receiving groove.

[0016] Optionally, the bottom of the workpiece body is provided with a boss, and the bottom wall of the receiving groove is provided with a positioning groove, and the boss can be inserted into the positioning groove.

[0017] Optionally, the fastening assembly includes a second fastener, and the fixing seat has a recess on the side opposite to the receiving groove, and the second fastener passes through the bottom wall of the recess and is threadedly connected to the workpiece body.

[0018] Optionally, the test fixture further includes a second limiting member and a third limiting member, wherein the second limiting member is used to detachably connect the connecting member to the moving end of the test power device, and the third limiting member is used to detachably connect the fixed base to the fixed end of the test power device.

[0019] Optionally, the diameter of the first limiting member is D1, the diameter of the second limiting member is D2, and the diameter of the third limiting member is D3, wherein D2 = D3 > D1.

[0020] Another objective of this invention is to provide a testing fixture that can effectively simulate the stress state of the workpiece under actual use conditions, thereby improving the reliability and accuracy of the test results.

[0021] To achieve this objective, the present invention adopts the following technical solution:

[0022] The test power device includes the aforementioned test fixture. The moving end of the test power device is provided with a moving block, and the fixed end of the test power device is provided with a fixed block. The connecting member is connected to the moving block, and the fixed seat is disposed on the fixed block.

[0023] Beneficial effects:

[0024] The testing fixture provided by this utility model has a connector that is inserted into the connector of the workpiece to be tested through a first slot and fixed radially by a first limiting member. This can simulate the stress on the connector of the workpiece under actual working conditions. At the same time, at least part of the workpiece body is located in the receiving groove, and the two sides of the workpiece body and the side of the workpiece body away from the connector are fastened to the fixed base by fastening components, which can stably position the workpiece body, making the testing process closer to the actual working conditions and improving the reliability and accuracy of the test results.

[0025] The testing power device provided by this utility model can effectively simulate the stress state of the workpiece under actual use conditions, thereby improving the reliability and accuracy of the test results. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the installation structure of the connecting arm in the prior art;

[0027] Figure 2 This is a schematic diagram of the structure of the testing power device provided by this utility model;

[0028] Figure 3 This is a cross-sectional view of the testing power device provided by this utility model;

[0029] Figure 4 This is an exploded view of the test fixture and the test piece provided by this utility model.

[0030] In the picture:

[0031] 10. Workpiece to be tested; 101. Workpiece body; 1011. First fixing hole; 1012. Boss; 1013. Threaded hole; 102. Connector; 1021. First pin hole; 20. Main tie rod; 30. Auxiliary tie rod; 40. Moving side of the first arc-extinguishing chamber; 401. First rod; 50. Moving side of the second arc-extinguishing chamber; 501. Second rod; 60. First bolt; 70. Second bolt;

[0032] 100. Connector; 110. First pillar; 111. First slot; 112. First through hole; 120. Second pillar; 121. Second through hole; 130. Rounded corner structure;

[0033] 200. First limiting component;

[0034] 300, Fixing base; 310, Receiving groove; 311, Positioning groove; 320, Second fixing hole; 330, Countersunk groove; 331, Clearance hole; 340, Fixing part; 341, Third through hole; 350, Arc transition structure;

[0035] 400. Fastening assembly; 410. First fastener; 420. Second fastener;

[0036] 500, Movable block; 510, Second slot; 520, Second pin hole; 600, Fixed block; 610, Third slot; 620, Third pin hole; 700, Second limiting member; 800, Third limiting member. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0038] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 based on the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0041] The circuit breaker module in a gas-insulated metal-enclosed switchgear typically includes a first arc-extinguishing chamber, a second arc-extinguishing chamber, a main tie rod 20, and an auxiliary tie rod 30. The moving side of the first arc-extinguishing chamber is provided with a first rod 401, and the moving side of the second arc-extinguishing chamber is provided with a second rod 501. The connecting arm includes a workpiece body 101 and a connector 102. The connector 102 is provided with a first pin hole 1021. The workpiece body 101 has first fixing holes 1011 on both sides. The bottom end of the workpiece body 101 is provided with a boss 1012, and the boss 1012 has a threaded hole 1013.

[0042] like Figure 1 As shown, in actual operation, auxiliary pull rods 30 are provided on both sides of the connecting arm. The auxiliary pull rods 30 have a hollow structure inside. Each auxiliary pull rod 30 corresponds to a first fixing hole 1011. The first bolt 60 can pass through the first fixing hole 1011 of the connecting arm, the auxiliary pull rod 30, and the end of the second rod 501 and be tightened, so that the connecting arm, the auxiliary pull rod 30, and the second rod 501 are tightly connected. The moving side 40 of the first arc-extinguishing chamber is rigidly connected to the threaded hole 1013 on the bottom side of the connecting arm through the second bolt 70, thereby connecting the moving side 40 of the first arc-extinguishing chamber to the moving side 50 of the second arc-extinguishing chamber, that is, connecting the first rod 401 and the second rod 501. The connecting head 102 is fixedly connected to the main pull rod 20 of the circuit breaker through the first limiting member 200 passing through the first pin hole 1021 on the connecting head 102. The main pull rod 20 is connected to the mechanism of the circuit breaker and serves as a power source.

[0043] Based on the above-mentioned use of the connecting arm in the circuit breaker module, this embodiment provides a test fixture and a test power device. The test fixture is applied to the test power device to fix the connecting arm, thereby simulating the stress condition of the workpiece 10 under actual use.

[0044] The following is a detailed description of the structure of the test fixture and the test power device, taking the workpiece 10 to be tested as the connecting arm in the circuit breaker module and the test power device as a tensile testing machine.

[0045] like Figures 2-4As shown, the moving end of the test power device is provided with a moving block 500, and the fixed end of the test power device is provided with a fixed block 600. The test fixture includes a connector 100, a first limiting member 200, a fixed seat 300, and a fastening assembly 400. One end of the connector 100 is connected to the moving block 500, and the other end is provided with a first slot 111. At least a portion of the connector 102 can be inserted into the first slot 111. The first limiting member 200 passes through the connector 100 and the connector 102 radially along the connector 100, thereby limiting the connector 102 within the first slot 111. The fixed seat 300 is connected to the fixed block 600 and is located below the connector 100. The fastening assembly 400 is used to fasten both sides of the workpiece body 101 and the side of the workpiece body 101 away from the connector 102 to the fixed seat 300. This can simulate the force situation of the connecting arm in the actual working state, making the test process closer to the real working condition and improving the reliability and accuracy of the test results. Furthermore, the testing fixture can be used directly with existing testing power units without the need to purchase new testing power units or modify existing testing power units, thus reducing production costs.

[0046] Optionally, such as Figure 3 and Figure 4 As shown, the connector 100 includes a first column 110, a first slot 111 disposed on the first column 110, a first through hole 112 communicating with the first slot 111 in the radial direction of the first column 110, a first pin hole 1021 in the radial direction of the connector 102, the first through hole 112 and the first pin hole 1021 being coaxially aligned, and a first limiting member 200 passing through the first through hole 112 and the first pin hole 1021 to ensure the stability of the connection and prevent the connector 102 from loosening or shifting. Furthermore, the first limiting member 200 is used to fix the connector 102, making the connection between the connector 102 and the first column 110 more convenient, facilitating quick assembly or replacement, and improving the ease of use and maintenance efficiency of the testing fixture.

[0047] Optionally, such as Figure 4 As shown, the connector 100 also includes a second column 120. One end of the second column 120 is connected to the first column 110, and the other end is connected to the movable end. The diameter of the second column 120 is smaller than the diameter of the first column 110, and a first rounded corner structure 130 is provided at the connection between the second column 120 and the first column 110, which can effectively reduce stress concentration, reduce fatigue damage at local stress points, and improve the impact resistance of the overall structure.

[0048] Optionally, the test fixture includes a second limiting member 700, and the connecting member 100 is detachably connected to the movable block 500 via the second limiting member 700. Specifically, as... Figure 2 , Figure 3 and Figure 4As shown, the movable block 500 is provided with a second slot 510 and a second pin hole 520 arranged radially therein. The second column 120 is provided with a second through hole 121 radially. At least a portion of the second column 120 is inserted into the second slot 510 so that the second pin hole 520 and the second through hole 121 are coaxially aligned. The second limiting member 700 passes through the second pin hole 520 and the second through hole 121, thereby fixing the second column 120 to the movable block 500 and improving the stability of the connection between the connector 100 and the movable block 500. Furthermore, by connecting the second column 120 of the connector 100 to the movable block 500 through the second limiting member 700, it is convenient to install and replace the connector 100, improve the flexibility of the test power device, reduce assembly time, and improve test efficiency.

[0049] Optionally, such as Figure 3 As shown, the fastening assembly 400 includes a first fastener 410. The workpiece body 101 has first fixing holes 1011 on both sides, and the fixing seat 300 has second fixing holes 320 on both sides. The first fixing holes 1011 can be coaxially aligned with their corresponding second fixing holes 320. The first fastener 410 passes through the first fixing holes 1011 and the second fixing holes 320 in sequence and is fastened, so that the workpiece body 101 can be firmly installed in the receiving groove 310, avoiding loosening or displacement, improving the stability of the overall structure. Moreover, this assembly method is the same as the fixing method of the connecting arm in the circuit breaker module, so that the stress state of the connecting arm in the test fixture is more consistent with the actual use conditions, thereby improving the accuracy of the test results.

[0050] Optionally, the fixing base 300 is provided with a receiving groove 310, and at least part of the workpiece body 101 is located in the receiving groove 310. By embedding the workpiece body 101 into the receiving groove 310, the workpiece body 101 can be effectively prevented from shifting or shaking during the test, thereby improving the stability of the overall structure.

[0051] Optionally, such as Figure 3 and Figure 4 As shown, the bottom of the workpiece body 101 is provided with a boss 1012, and the bottom wall of the receiving groove 310 is provided with a positioning groove 311. The boss 1012 can be inserted into the positioning groove 311, which enables quick positioning of the connecting arm and reduces installation errors. Furthermore, after the boss 1012 is inserted into the positioning groove 311, it forms a fitting structure, which effectively restricts the horizontal movement of the connecting arm within the receiving groove 310 and ensures the reliability of the test results. In this embodiment, the insertion design of the boss 1012 and the positioning groove 311 is simple and intuitive. The operator only needs to insert the boss 1012 into the positioning groove 311 to complete the initial fixation, simplifying the installation steps and improving the installation efficiency of the connecting arm.

[0052] Optionally, in this embodiment, the first fastener 410 is a bolt, which makes the fixing method more reliable. Combined with the cooperation between the boss 1012 and the positioning groove 311, it ensures that the connecting arm will not loosen during the test.

[0053] Optionally, the fastening assembly 400 includes a second fastener 420. The fixed seat 300 has a recess 330 on the side opposite to the receiving groove 310. The second fastener 420 passes through the bottom wall of the recess 330 and is threaded to the workpiece body 101. The test fixture can realistically reproduce the connection method of the connecting arm in the circuit breaker through this design, thereby providing a more accurate performance evaluation. In addition, the second fastener 420 ensures that the connection between the fixed seat 300 and the connecting arm is more secure and reliable, enhancing the stability of the connection.

[0054] In this embodiment, the bottom wall of the sink 330 is provided with a clearance hole 331, and the boss 1012 is provided with a threaded hole 1013. The second fastening clamp is a bolt, which passes through the clearance hole 331 and extends into the threaded hole 1013 to be threadedly connected to the connecting arm. This makes the installation and disassembly of the connecting arm simple, reduces the assembly time, and improves the assembly efficiency.

[0055] Optionally, the test fixture also includes a third limiting member 800, and the fixed base 300 is detachably connected to the fixed block 600 via the third limiting member 800. Specifically, as... Figure 2 , Figure 3 As shown and Figure 4 As shown, the fixing block 600 is provided with a third slot 610 and a third pin hole 620 arranged radially thereon; the bottom of the fixing seat 300 is provided with a fixing part 340 protruding, and the fixing part 340 is provided with a third through hole 341 radially thereon. At least part of the fixing part 340 is inserted into the third slot 610. The third pin hole 620 and the third through hole 341 are coaxially opposite each other. The third limiting member 800 passes through the third pin hole 620 and the third through hole 341 to connect the fixing seat 300 and the fixing block 600. The design of the third limiting member 800 facilitates the quick disassembly of the fixing seat 300, greatly simplifies the assembly and disassembly steps of the fixing seat 300, saves time and labor, and facilitates subsequent maintenance and component replacement.

[0056] Optionally, the connection between the fixing part 340 and the fixing seat 300 is provided with an arc transition structure 350, which can reduce stress concentration, improve the strength of the fixing seat 300, and extend the service life of the fixing seat 300.

[0057] Optionally, the diameter of the first limiting member 200 is D1, the diameter of the second limiting member 700 is D2, and the diameter of the third limiting member 800 is D3, wherein D2 = D3 > D1. This ensures that the strength of the second limiting member 700 and the third limiting member 800 on the test power device is greater than the strength of the first limiting member 200 on the connecting arm, thus preventing component breakage on the test power device during testing and improving the stability and reliability of the test power device. In this embodiment, the first limiting member 200, the second limiting member 700, and the third limiting member 800 are respectively the first pin, the second pin, and the third pin. The pins have a simple structure, are easy to install, and can effectively withstand shear loads.

[0058] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A testing fixture, mounted on a testing power device, for connecting a workpiece (10) to be tested, the testing power device comprising a moving end and a fixed end, the workpiece (10) to be tested comprising a workpiece body (101) and a connector (102), characterized in that, The test fixture includes: The connector (100) is connected to the mobile end at one end and has a first slot (111) at the other end, at least part of the connector (102) can be inserted into the first slot (111); A first limiting member (200) is used to limit the connector (102) within the first slot (111); A fixing base (300) is connected to the fixing end; Fastening assembly (400) for fastening both sides of the workpiece body (101) and the side of the workpiece body (101) away from the connector (102) to the fixing base (300).

2. The test fixture according to claim 1, characterized in that, The connector (100) includes a first column (110), a first slot (111) is disposed on the first column (110), the first column (110) is provided with a first through hole (112) communicating with the first slot (111) in the radial direction, the connector (102) is provided with a first pin hole (1021) in the radial direction, the first through hole (112) and the first pin hole (1021) are coaxially aligned, and the first limiting member (200) passes through the first through hole (112) and the first pin hole (1021).

3. The testing fixture according to claim 2, characterized in that, The connector (100) further includes a second column (120), one end of which is connected to the first column (110) and the other end is connected to the movable end. The diameter of the second column (120) is smaller than the diameter of the first column (110), and a first rounded corner structure (130) is provided at the connection between the second column (120) and the first column (110).

4. The testing fixture according to claim 1, characterized in that, The fastening assembly (400) includes a first fastener (410). The workpiece body (101) has a first fixing hole (1011) on each side, and the fixing seat (300) has a second fixing hole (320) on each side. The first fixing hole (1011) can be coaxially aligned with its corresponding second fixing hole (320). The first fastener (410) passes through the first fixing hole (1011) and the second fixing hole (320) in sequence and is fastened.

5. The testing fixture according to claim 1, characterized in that, The fixed base (300) is provided with a receiving groove (310), and at least a portion of the workpiece body (101) is located in the receiving groove (310).

6. The test fixture according to claim 5, characterized in that, The bottom of the workpiece body (101) is provided with a boss (1012), and the bottom wall of the receiving groove (310) is provided with a positioning groove (311). The boss (1012) can be inserted into the positioning groove (311).

7. The test fixture according to claim 5, characterized in that, The fastening assembly (400) includes a second fastener (420), and the fixing seat (300) has a recess (330) on the side opposite to the receiving groove (310). The second fastener (420) passes through the bottom wall of the recess (330) and is threadedly connected to the workpiece body (101).

8. The test fixture according to any one of claims 1-7, characterized in that, The test fixture also includes a second limiting member (700) and a third limiting member (800). The second limiting member (700) is used to detachably connect the connecting member (100) to the moving end of the test power device, and the third limiting member (800) is used to detachably connect the fixed seat (300) to the fixed end of the test power device.

9. The test fixture according to claim 8, characterized in that, The diameter of the first limiting member (200) is D1, the diameter of the second limiting member (700) is D2, and the diameter of the third limiting member (800) is D3, wherein D2 = D3 > D1.

10. A test power unit, characterized in that, The test fixture includes any one of claims 1-9, wherein the moving end of the test power device is provided with a moving block (500), the fixed end of the test power device is provided with a fixed block (600), the connecting member (100) is connected to the moving block (500), and the fixed seat (300) is disposed on the fixed block (600).

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