Clamping tool tray for automatic verification line of mutual inductor

Abstract

The utility model relates to the technical field of mutual inductor clamping tool trays, and discloses a clamping tool tray for an automatic verification line of a mutual inductor, which comprises an insulating base, the top of the insulating base is fixedly connected with a tray, and the front end of the tray is fixedly connected with a grounding aluminum sheet; the clamping mechanism is arranged at the top of the tray; the clamping mechanism comprises two sliding grooves formed in the top of the tray, and clamping blocks are slidably connected to the inner walls of the sliding grooves. Through the electric push rod, the push frame and the driven block, the two clamping blocks are close to each other to clamp a mutual inductor, through the pressing block, the lower end of the surface of the mutual inductor is pressed, it is guaranteed that the mutual inductor is stably installed on the tray, and the situation that the mutual inductor is loosened on the tray when the mutual inductor is transported or inspected is avoided; therefore, errors in the process of testing the mutual inductor are avoided, and the practicability of clamping the working tray is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of clamping tool trays for instrument transformers, and particularly relates to a clamping tool tray for an automatic calibration line of instrument transformers. Background Technique

[0002] The clamping tool tray for the automatic calibration line of instrument transformers is an automated auxiliary device used in the power industry during the testing and calibration of instrument transformers such as current transformers CT and voltage transformers PT. The clamping tool tray is used to fix the instrument transformer to ensure the stable position of the instrument transformer during the test and avoid measurement errors caused by vibration or movement. Instrument transformers are key components used for current and voltage measurement and protection in the power system, and their accuracy and reliability are crucial for the normal operation of the power system. Therefore, it is necessary to regularly calibrate the instrument transformers to ensure that their measurement accuracy meets the national standards.

[0003] After retrieval, the Chinese patent "Clamping Tool Tray for Automatic Calibration Line of Instrument Transformers" with the authorization announcement number "CN103412277B" realizes the clamping of the instrument transformer through springs, positioning sliders, connecting rods, sliders and movable clamps, and solves the problem of shaking or tipping of the instrument transformer during transportation, with a simple structure.

[0004] Due to the elasticity of the spring, only by pushing the positioning slider and the connecting rod with the spring, the movable clamp abuts against the lower end of the surface of the instrument transformer. During transportation, vibration is likely to cause the movable clamp to move, and thus the clamping of the instrument transformer is unstable. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides a clamping tool tray for an automatic calibration line of instrument transformers, which has the advantages of stable clamping of the instrument transformer and solves the problem of unstable clamping of the existing instrument transformer.

[0007] (2) Technical Solutions

[0008] To achieve the purpose of stable clamping of the instrument transformer, the utility model provides the following technical solutions:

[0009] A clamping tool tray for an automatic calibration line of instrument transformers.

[0010] As a preferred solution of a clamping tooling tray for an automatic calibration line of an instrument transformer of the present utility model: It includes: an insulating base, a tray is fixedly connected to the top of the insulating base, and a grounding aluminum sheet is fixedly connected to the front end of the tray; a clamping mechanism, the clamping mechanism is arranged on the top of the tray; wherein, the clamping mechanism includes two chutes opened on the top of the tray, a clamping block is slidably connected to the inner wall of the chute, a driven block is fixedly connected to one side of the clamping block, an electric push rod is fixedly connected to the inner wall of the tray, a push frame is fixedly connected to the telescopic end of the electric push rod, one side of the push frame is slidably connected to one side of the driven block, and pressing blocks are fixedly connected to both the front and rear ends of the clamping block.

[0011] Based on the above technical features: Through the electric push rod, the push frame and the driven block, the two clamping blocks are made to approach each other to clamp the instrument transformer, and through the pressing blocks, the lower end of the surface of the instrument transformer is pressed, ensuring the stability of the installation of the instrument transformer on the tray, avoiding loosening of the instrument transformer on the tray during transportation or inspection of the instrument transformer, and further avoiding error situations during the testing of the instrument transformer, thereby improving the practicability of the clamping working tray.

[0012] As a preferred solution of a clamping tooling tray for an automatic calibration line of an instrument transformer of the present utility model: A spring is fixedly connected to one side of the clamping block, and the other end of the spring is fixedly connected to one side of the inner wall of the chute.

[0013] Based on the above technical features: Through the springs, when the push frame moves backward, the elastic forces of the two springs push the respective clamping blocks to move, so that the two clamping blocks move away from each other to release the clamping state of the instrument transformer, making it more convenient to take the instrument transformer on the tray.

[0014] As a preferred solution of a clamping tooling tray for an automatic calibration line of an instrument transformer of the present utility model: Four guide rods are fixedly connected to the top of the tray, and the four guide rods are distributed in a rectangle.

[0015] As a preferred solution of a clamping tooling tray for an automatic calibration line of an instrument transformer of the present utility model: A number of first balls are rollingly connected to the surface of the guide rod, and the first balls are rubber components.

[0016] Based on the above technical features: Through the guide rods and the first balls, the instrument transformer is centered on the tray and the instrument transformer is limited, avoiding large offsets of the instrument transformer at the center of the top of the tray, and facilitating the bottom of the instrument transformer to contact the grounding aluminum sheet.

[0017] As a preferred solution of a clamping tooling tray for an automatic calibration line of an instrument transformer of the present utility model: A limiting block is fixedly connected to one side of the push frame, a limiting groove is opened on one side of the driven block, and the surface of the limiting block is slidably connected to the inner wall of the limiting groove.

[0018] Based on the above technical features: through the limiting block and the limiting groove, the pushing frame can drive the driven block to move during movement, preventing the pushing frame from disengaging from the side of the driven block during movement.

[0019] As a preferred solution for a clamping tooling tray for an automatic calibration line of transformers in the present utility model: both sides of the clamping block are fixedly connected with blocking blocks, and the surfaces of the blocking blocks are slidably connected to the inner walls of the sliding grooves.

[0020] Based on the above technical features: through the blocking blocks, the openings of the sliding grooves are blocked, preventing impurities from entering the sliding grooves.

[0021] As a preferred solution for a clamping tooling tray for an automatic calibration line of transformers in the present utility model: the bottom of the clamping block is rotatably connected with second balls, and the surfaces of the second balls are rotatably connected to the inner bottom walls of the sliding grooves.

[0022] Based on the above technical features: through the second balls, the smooth movement of the clamping block in the sliding groove is ensured.

[0023] As a preferred solution for a clamping tooling tray for an automatic calibration line of transformers in the present utility model: the surfaces of the driven block and one end of the surface of the pushing frame are both in the shape of a right trapezoid.

[0024] (III) Beneficial effects

[0025] Compared with the prior art, the present utility model provides a clamping tooling tray for an automatic calibration line of transformers, having the following beneficial effects:

[0026] 1. Through the electric push rod, the pushing frame and the driven block, the two clamping blocks are made to approach each other to clamp the transformer. Through the pressing block, the lower end of the surface of the transformer is pressed, ensuring the stable installation of the transformer on the tray, preventing the transformer from loosening on the tray during transportation or inspection of the transformer, and thus avoiding error situations during the testing of the transformer, and improving the practicability of the clamping working tray;

[0027] 2. Through the springs, when the pushing frame moves backward, the elastic forces of the two springs push the respective clamping blocks to move, causing the two clamping blocks to move away from each other to release the clamping state of the transformer, making it more convenient to take the transformer on the tray. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0029] Figure 2 is a schematic diagram of the insulating base and the tray structure of the present utility model;

[0030] Figure 3 Schematic structural diagram of the clamping mechanism of the present utility model;

[0031] Figure 4 Cross-sectional view of the driven block and the clamping block of the present utility model.

[0032] In the figure: 1, insulating base; 2, tray; 3, grounding aluminum sheet; 4, clamping mechanism; 41, chute; 42, clamping block; 43, driven block; 44, electric push rod; 45, push frame; 46, first ball; 47, spring; 48, pressing block; 49, limiting groove; 410, limiting block; 411, second ball; 412, stop block; 413, guide rod. Specific embodiments

[0033] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0034] Please refer to Figures 1-4 , the present utility model provides a technical solution: a clamping tooling tray for an automatic calibration line of an instrument transformer, including: an insulating base 1, a tray 2 fixedly connected to the top of the insulating base 1, and a grounding aluminum sheet 3 fixedly connected to the front end of the tray 2; a clamping mechanism 4, the clamping mechanism 4 is arranged on the top of the tray 2; wherein, the clamping mechanism 4 includes two chutes 41 opened on the top of the tray 2, the inner wall of the chute 41 is slidably connected with a clamping block 42, one side of the clamping block 42 is fixedly connected with a driven block 43, the inner wall of the tray 2 is fixedly connected with an electric push rod 44, the telescopic end of the electric push rod 44 is fixedly connected with a push frame 45, one side of the push frame 45 is slidably connected to one side of the driven block 43, both the front and rear ends of the clamping block 42 are fixedly connected with pressing blocks 48, one side of the push frame 45 is fixedly connected with a limiting block 410, a limiting groove 49 is opened on one side of the driven block 43, the surface of the limiting block 410 is slidably connected to the inner wall of the limiting groove 49, the bottom of the clamping block 42 is rollingly connected with a second ball 411, the surface of the second ball 411 is rollingly connected to the inner bottom wall of the chute 41, and the surfaces of both the driven block 43 and one end of the push frame 45 are in the shape of a right trapezoid. A rubber pad is fixedly connected to one side of the clamping block 42.

[0035] When the mutual inductor needs to be detected or transported, the mutual inductor is placed on the top of the insulating base 1 by the machine gripper. Manually turn on the power switch of the electric push rod 44. The telescopic end of the electric push rod 44 moves to drive the push frame 45 to move. The movement of the push frame 45 drives the limit block 410 to move in the limit groove 49, so that the side surface of the push frame 45 moves on the side surface of the driven block 43, causing the driven block 43 to be pushed and drive the clamping block 42 to abut against the surface of the mutual inductor, and the rubber pads on the two clamping blocks 42 clamp the mutual inductor. Manually turn off the electric push rod 44. At this time, the transport tray 2 reaches the detection location. After connecting the detection line to the mutual inductor clamped on the tray 2, the power-on detection is started, and the detected data will be displayed on the numerical control screen on the detection table for the detection personnel to check whether the mutual inductor is qualified.

[0036] As Figure 4 shown, one side of the clamping block 42 is fixedly connected with a spring 47, and the other end of the spring 47 is fixedly connected to one side of the inner wall of the sliding groove 41.

[0037] After the detection is completed, manually turn on the electric push rod 44. The telescopic end of the electric push rod 44 moves to drive the push frame 45 to move backward. The movement of the push frame 45 drives the limit block 410 to move in the limit groove 49, pulling the driven block 43 to move away from the mutual inductor. At this time, the elastic force of the spring 47 pushes the clamping block 42 to move, so that the two clamping blocks 42 quickly move away from each other. At this time, the mutual inductor on the tray 2 is taken by the machine gripper.

[0038] As Figures 2-3 shown, the top of the tray 2 is fixedly connected with four guide rods 413. The four guide rods 413 are arranged in a rectangular distribution. A number of first balls 46 are rollingly connected to the surface of the guide rods 413. The first balls 46 are rubber components.

[0039] As Figure 3 shown, both sides of the clamping block 42 are fixedly connected with stoppers 412. The surfaces of the stoppers 412 are slidably connected to the inner walls of the sliding grooves 41. The stoppers 412 are rubber components.

[0040] When the utility model is in use, the mutual inductor is placed on the top of the insulating base 1 through the machine gripper. The four guide rods 413 and the first ball 46 center the mutual inductor on the top of the tray 2. Manually turn on the power switch of the electric push rod 44. The telescopic end of the electric push rod 44 moves to drive the push frame 45 to move. The movement of the push frame 45 drives the limit block 410 to move in the limit groove 49, so that the side surface of the push frame 45 moves on the side surface of the driven block 43, causing the driven block 43 to be pushed to drive the clamping block 42 to abut against the surface of the mutual inductor, and the rubber pads on the two clamping blocks 42 clamp the mutual inductor. Manually turn off the electric push rod 44. At this time, the transport tray 2 is moved to the detection location. After connecting the detection line to the mutual inductor clamped on the tray 2, the power-on detection is started. The detected data will be displayed on the numerical control screen on the detection table for the detection personnel to check whether the mutual inductor is qualified. After the detection is completed, manually turn on the electric push rod 44. The telescopic end of the electric push rod 44 moves to drive the push frame 45 to move backward. The movement of the push frame 45 drives the limit block 410 to move in the limit groove 49, pulling the driven block 43 to move away from the mutual inductor. At this time, the elastic force of the spring 47 pushes the clamping block 42 to move, causing the two clamping blocks 42 to quickly move away from each other. At this time, the machine gripper is used to pick up the mutual inductor on the tray 2.

[0041] It should be noted that in the above description, the insulating base 1, the tray 2, the grounding aluminum sheet 3, the electric push rod 44, etc. are all devices with relatively mature applications in the prior art. The specific models can be selected according to actual needs. At the same time, the power supply of the electric push rod 44 can be an internal power supply or a mains power supply. The specific power supply method is selected according to the situation and will not be elaborated here.

[0042] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0043] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A clamping tooling tray for a transformer automatic calibration line, characterized in that: include: An insulating base (1), wherein a tray (2) is fixedly connected to the top of the insulating base (1), and a grounding aluminum sheet (3) is fixedly connected to the front end of the tray (2); A clamping mechanism (4), wherein the clamping mechanism (4) is arranged on the top of the tray (2); The clamping mechanism (4) comprises two slide grooves (41) opened on the top of the tray (2); the inner wall of the slide groove (41) is slidably connected with a clamping block (42); one side of the clamping block (42) is fixedly connected with a driven block (43); the inner wall of the tray (2) is fixedly connected with an electric push rod (44); the telescopic end of the electric push rod (44) is fixedly connected with a push frame (45); one side of the push frame (45) is slidably connected to one side of the driven block (43); and the front and rear ends of the clamping block (42) are fixedly connected with a pressing block (48).

2. A clamping tooling tray for a transformer automatic calibration line as claimed in claim 1, characterized in that: One side of the clamping block (42) is fixedly connected to a spring (47), and the other end of the spring (47) is fixedly connected to one side of the inner wall of the sliding groove (41).

3. The clamping tooling tray for the automatic verification line of a transformer according to claim 1, characterized in that: Four guide rods (413) are fixedly connected to the top of the tray (2), and the four guide rods (413) are distributed in a rectangular shape.

4. A clamping tooling tray for a transformer automatic calibration line as claimed in claim 3, characterized in that: A plurality of first rolling balls (46) are rollingly connected to the surface of the guide rod (413), and the first rolling balls (46) are rubber components.

5. The clamping tooling tray for the automatic verification line of a mutual inductor according to claim 1, characterized in that: One side of the push frame (45) is fixedly connected to a limiting block (410), one side of the driven block (43) is provided with a limiting groove (49), and the surface of the limiting block (410) is slidably connected to the inner wall of the limiting groove (49).

6. The clamping tooling tray for the automatic verification line of a transformer according to claim 1, characterized in that: Stop blocks (412) are fixedly connected to both sides of the clamping block (42), and the surface of the stop block (412) is slidably connected to the inner wall of the sliding groove (41).

7. The clamping tooling tray for the automatic verification line of a mutual inductor according to claim 1, characterized in that: The bottom of the clamping block (42) is rollingly connected to a second ball (411), and the surface of the second ball (411) is rollingly connected to the inner bottom wall of the sliding groove (41).

8. The clamping tooling tray for the automatic verification line of a transformer according to claim 1, characterized in that: The surface of the driven block (43) and one end of the surface of the push frame (45) are both in the shape of a right-angled trapezoid.

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