A lightning arrester stretching test device

Abstract

The utility model discloses a lightning arrester tensile test device, specifically relates to lightning arrester detection technical field, including base, the base upper end front part rotationally connected with glass cover, the base upper portion is fixedly connected with two mobile mechanisms, two mobile mechanisms are close to each other's one end all fixedly connected with two clamping mechanisms, two clamping mechanisms are far from each other's one end all slidingly connected with the limiting mechanism, the base upper portion is fixedly connected with the support mechanism. The utility model discloses a lightning arrester tensile test device is provided with clamping mechanism, adopts the combination of '' chuck + connecting rod + telescopic rod '', through replacing different specifications chuck, can adapt to various size lightning arrester, and the semicircle block and spring no.

Description

Technical Field

[0001] This utility model relates to the field of surge arrester testing technology, and in particular to a surge arrester tensile testing device. Background Technology

[0002] In power systems, surge arresters are key components that ensure the safe operation of electrical equipment. Their mechanical properties (such as tensile strength) are directly related to the stability and reliability of the power grid. With the improvement of voltage levels and the development of intelligent systems, higher requirements have been placed on the quality testing of surge arresters. In particular, tensile performance testing, as the core link in evaluating the mechanical reliability of surge arresters, urgently requires more efficient and accurate testing equipment.

[0003] In existing technologies, traditional surge arrester tensile testing devices generally have the following shortcomings:

[0004] The fixed clamp structure is difficult to adapt to the clamping requirements of surge arresters of different specifications. It is prone to slippage or local damage during the stretching process, resulting in large deviations in test data. It lacks effective protective measures. When the surge arrester breaks, the flying fragments may endanger the safety of the operators. At the same time, it is impossible to visually monitor the test process. Utility Model Content

[0005] The main purpose of this utility model is to provide a surge arrester tensile testing device, which can effectively solve the problem of slippage or local damage during the tensile process, resulting in large deviations in test data.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A surge arrester tensile testing device includes a base, a glass cover plate rotatably connected to the upper front of the base, two moving mechanisms fixedly connected to the upper part of the base, two clamping mechanisms fixedly connected to the ends of the two moving mechanisms close to each other, and a limit mechanism slidably connected to the ends of the two clamping mechanisms away from each other, and a support mechanism fixedly connected to the upper part of the base.

[0008] Preferably, the moving mechanism includes a hydraulic cylinder, the lower part of which is fixedly connected to the upper part of the base, a transmission rod is fixedly connected to the output end of the hydraulic cylinder, a fixed plate is fixedly connected to the end of the transmission rod away from the hydraulic cylinder, and two fixed blocks are fixedly connected to the end of the fixed plate away from the transmission rod, with a connecting plate rotatably connected to the middle of the fixed blocks.

[0009] Preferably, the two moving mechanisms are symmetrically distributed.

[0010] Preferably, the clamping mechanism includes a connecting rod, the middle of which is rotatably connected to a connecting plate. A clamp is installed at one end of the connecting rod that is close to each other on the same side. A telescopic rod is fixedly connected at the end of the connecting rod away from the clamp. A movable block is slidably connected to the outer surface of the telescopic rod. A triangular block is fixedly connected to the upper end of the movable block.

[0011] Preferably, the clamping mechanisms located on the same side are symmetrically distributed, and the moving block has protrusions on both the top and bottom of the side away from the clamp.

[0012] Preferably, the limiting mechanism includes a limiting strip, with scale lines engraved on both the left and right sides of the end of the limiting strip near the moving mechanism, and T-shaped grooves opened on both the left and right sides of the end of the limiting strip near the moving mechanism. Two circular grooves are opened in the middle of the limiting strip, and a spring is fixedly connected to the inner wall of the circular groove. A semi-circular block is fixedly connected to the end of the spring away from the inner wall.

[0013] Preferably, the semicircular blocks are located on the side of each other within the T-slot.

[0014] Preferably, the support mechanism includes two springs, the lower ends of the two springs are fixedly connected to the upper part of the base, the upper ends of the springs are fixedly connected to a fixing block, and the upper ends of the two fixing blocks are fixedly connected to an arc-shaped support plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In this embodiment, a clamping mechanism is set up, using a combination of "clamp + connecting rod + telescopic rod". By changing different specifications of clamps, it can adapt to various sizes of surge arresters. The semi-circular block and spring 1 in the limiting mechanism form an elastic limiting structure. In the initial clamping stage, the semi-circular block jams the moving block to prevent it from moving laterally, ensuring that the clamp is accurately aligned with the surge arrester. When the pulling force applied by the hydraulic cylinder exceeds the elastic force of spring 1, the semi-circular block compresses spring 1 to release the moving block, realizing the orderly operation of "first fixing and aligning, then stretching smoothly", further improving the clamping reliability.

[0017] 2. In this embodiment, a glass cover plate is set for protection. The glass cover plate, which is rotatably connected to the front end of the base, can isolate the surge arrester fragments that may fly during the stretching process, so as to avoid endangering the safety of the operators. At the same time, the transparent material makes it easy to observe the stretching status in real time without having to come into close contact with the test area, thus taking into account both safety and visualization requirements. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the moving mechanism structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the clamping mechanism of this utility model;

[0021] Figure 4 This is a schematic diagram of the limiting mechanism structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the support mechanism structure of this utility model.

[0023] In the diagram: 1. Base; 2. Glass cover; 3. Moving mechanism; 31. Hydraulic cylinder; 32. Transmission rod; 33. Fixing plate; 34. Fixing block one; 35. Connecting plate; 4. Clamping mechanism; 41. Chuck; 42. Connecting rod; 43. Telescopic rod; 44. Moving block; 45. Triangular block; 5. Limiting mechanism; 51. Limiting strip; 52. Scale line; 53. T-slot; 54. Spring one; 55. Semicircular block; 6. Supporting mechanism; 61. Arc-shaped support plate; 62. Fixing block two; 63. Spring two. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] Example 1, as Figure 1 As shown, a surge arrester tensile testing device includes a base 1, a glass cover plate 2 rotatably connected to the front of the upper end of the base 1, two moving mechanisms 3 fixedly connected to the upper part of the base 1, two clamping mechanisms 4 fixedly connected to the ends of the two moving mechanisms 3 that are close to each other, and a limit mechanism 5 slidably connected to the ends of the two clamping mechanisms 4 that are far from each other, and a support mechanism 6 fixedly connected to the upper part of the base 1.

[0026] In this embodiment, during implementation, the glass cover 2 is opened, the surge arrester is placed on the support mechanism 6, and the moving mechanism 3 is activated at the same time. The glass cover 2 is then closed, and the moving mechanism 3 drives the clamping mechanism 4 to clamp the surge arrester. After clamping, the moving mechanism 3 drives the clamping mechanism 4 to move along the limiting mechanism 5 to stretch the surge arrester and record the stretching data. The glass cover 2 allows staff to easily observe the stretching of the surge arrester and also prevents the flying fragments from injuring staff when the surge arrester is broken.

[0027] For instructions on stretching the surge arrester, please refer to... Figure 2 The moving mechanism 3 includes a hydraulic cylinder 31. The lower part of the hydraulic cylinder 31 is fixedly connected to the upper part of the base 1. A transmission rod 32 is fixedly connected to the output end of the hydraulic cylinder 31. A fixed plate 33 is fixedly connected to the end of the transmission rod 32 away from the hydraulic cylinder 31. Two fixed blocks 34 are fixedly connected to the end of the fixed plate 33 away from the transmission rod 32. A connecting plate 35 is rotatably connected to the middle of the fixed block 34. The two moving mechanisms 3 are symmetrically distributed.

[0028] During implementation, the hydraulic cylinder 31 drives the transmission rod 32 to move outward, the transmission rod 32 drives the fixed plate 33 and the fixed block 34 to move outward, and the two fixed blocks 34 drive the two connecting plates 35 to rotate around the fixed blocks 34 toward each other.

[0029] For further details, please refer to [link / reference]. Figure 3 The clamping mechanism 4 includes a connecting rod 42, the middle of which is rotatably connected to the connecting plate 35. A chuck 41 is installed at one end of the connecting rod 42 that is close to each other on the same side. A telescopic rod 43 is fixedly connected to the end of the connecting rod 42 that is away from the chuck 41. A moving block 44 is slidably connected to the outer surface of the telescopic rod 43. A triangular block 45 is fixedly connected to the upper end of the moving block 44. The clamping mechanisms 4 on the same side are symmetrically distributed. The moving block 44 has protrusions on both the upper and lower sides on the side away from the chuck 41.

[0030] During implementation, a suitable clamp 41 is replaced. When the connecting plate 35 rotates around the fixed block 34, the connecting plate 35 drives the connecting rod 42 to move. The connecting rod 42 drives the telescopic rod 43 to move. The connecting rod 42 drives the clamp 41 to clamp the surge arrester. The protrusion of the moving block 44 extends into the limiting mechanism 5, so that the moving block 44 moves along the limiting mechanism 5. The triangular block 45 plays the role of specifying the scale and clarifying the position movement distance.

[0031] Example 2: To limit the movement direction of the moving block 44, see [reference needed]. Figure 4 The limiting mechanism 5 includes a limiting strip 51. The left and right sides of the limiting strip 51 near the moving mechanism 3 are engraved with scale lines 52. The left and right sides of the limiting strip 51 near the moving mechanism 3 are provided with T-shaped grooves 53. The middle of the limiting strip 51 is provided with two circular grooves. A spring 54 is fixedly connected to the inner wall of the circular groove. A semi-circular block 55 is fixedly connected to the end of the spring 54 away from the inner wall. The semi-circular block 55 is located on the side of the T-shaped groove 53 that is close to each other.

[0032] During implementation, the limiting strip 51 is provided with a T-shaped groove 53. The protrusion of the moving block 44 is stuck in the T-shaped groove 53, so that the moving block 44 can only move along the T-shaped groove 53. The semi-circular block 55 protrudes into the T-shaped groove 53, blocking the moving block 44. When the moving mechanism 3 drives the clamping mechanism 4 to clamp the surge arrester, the moving block 44 does not move in the left and right directions. After clamping, the force of the moving mechanism 3 on the moving block 44 in the left and right directions gradually increases. The moving block 44 presses the semi-circular block 55 into the circular groove. The spring 1 54 is compressed, the moving block 44 is released from fixation, and begins to move along the T-shaped groove 53. The clamp 41 clamps the surge arrester and pulls it to both ends. The limiting strip 51 is engraved with scale lines 52, which makes it convenient for staff to directly observe and record the stretching distance without the need to use a ruler for measurement.

[0033] For support of surge arresters, please refer to... Figure 5 The support mechanism 6 includes two springs 63. The lower ends of the two springs 63 are fixedly connected to the upper part of the base 1. The upper ends of the springs 63 are fixedly connected to the fixing blocks 62. The upper ends of the two fixing blocks 62 are fixedly connected to the arc-shaped support plate 61.

[0034] During implementation, the lightning rod is placed on the upper end of the arc-shaped support plate 61. When the clamp 41 holds the lightning rod, the lightning rod naturally slides from the upper end of the arc-shaped support plate 61 into the space between the two clamps 41. The second spring 63 can adapt to lightning arresters of different thicknesses and weights, so that lightning arresters of different thicknesses can be positioned at a suitable height under the action of the second spring 63 and slide into the two clamps 41 to be held by the clamps 41.

[0035] It should be noted that the specific installation method, circuit connection method and control method of the hydraulic cylinder 31 used in this utility model are all conventional designs, and will not be described in detail in this utility model.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A surge arrester tensile test device comprising a base (1), characterized in that: The upper front of the base (1) is rotatably connected to a glass cover plate (2). The upper part of the base (1) is fixedly connected to two moving mechanisms (3). The ends of the two moving mechanisms (3) that are close to each other are fixedly connected to two clamping mechanisms (4). The ends of the two clamping mechanisms (4) that are far from each other are slidably connected to a limit mechanism (5). The upper part of the base (1) is fixedly connected to a support mechanism (6).

2. The surge arrester tension test device according to claim 1, characterized in that: The moving mechanism (3) includes a hydraulic cylinder (31), the lower part of which is fixedly connected to the upper part of the base (1). A transmission rod (32) is fixedly connected to the output end of the hydraulic cylinder (31). A fixing plate (33) is fixedly connected to the end of the transmission rod (32) away from the hydraulic cylinder (31). Two fixing blocks (34) are fixedly connected to the end of the fixing plate (33) away from the transmission rod (32). A connecting plate (35) is rotatably connected to the middle of the fixing block (34).

3. The surge arrester tension test device of claim 2, wherein: The two moving mechanisms (3) are symmetrically distributed.

4. The surge arrester tensile testing device according to claim 2, characterized in that: The clamping mechanism (4) includes a connecting rod (42), the middle part of which is rotatably connected to the connecting plate (35). A clamp (41) is installed at one end of the connecting rod (42) near the same side. A telescopic rod (43) is fixedly connected at the other end of the connecting rod (42) away from the clamp (41). A moving block (44) is slidably connected to the outer surface of the telescopic rod (43). A triangular block (45) is fixedly connected to the upper end of the moving block (44).

5. The surge arrester tensile testing device according to claim 4, characterized in that: The clamping mechanisms (4) located on the same side are symmetrically distributed, and the moving block (44) has protrusions on both the top and bottom of the side away from the chuck (41).

6. The surge arrester tensile testing device according to claim 3, characterized in that: The limiting mechanism (5) includes a limiting strip (51). The limiting strip (51) has scale lines (52) engraved on both the left and right sides of the end near the moving mechanism (3). The limiting strip (51) has T-shaped grooves (53) on both the left and right sides of the end near the moving mechanism (3). The limiting strip (51) has two circular grooves in the middle. A spring (54) is fixedly connected to the inner wall of the circular groove. A semi-circular block (55) is fixedly connected to the end of the spring (54) away from the inner wall.

7. The surge arrester tensile testing device according to claim 6, characterized in that: The semicircular blocks (55) are located on one side of each other within the T-groove (53).

8. The surge arrester tensile testing device according to claim 2, characterized in that: The support mechanism (6) includes two springs (63), the lower ends of the two springs (63) are fixedly connected to the upper part of the base (1), the upper ends of the springs (63) are fixedly connected to a fixing block (62), and the upper ends of the two fixing blocks (62) are fixedly connected to an arc-shaped support plate (61).

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