Cable rack for transformer test

Abstract

The utility model discloses a cable rack for a transformer test, and belongs to the technical field of transformer auxiliary test. The cable rack for the transformer test comprises a movable support used for supporting a cable, the support comprises a height-adjustable stand column, a clamp used for clamping the cable is arranged at the top end of the stand column, the support further comprises a bottom plate, and four universal wheels with brakes are arranged at the four corners of the bottom of the bottom plate respectively. The stand column is fixedly arranged on the upper surface of the bottom plate, the stand column comprises a supporting cylinder and a supporting rod, and the supporting rod is arranged in the supporting cylinder in a sliding mode; according to the cable rack for the transformer test, the arranged support can be used for containing and supporting a cable, the arranged clamp can be used for clamping the end portion, connected with a transformer, of the cable, connection between the cable and the transformer in the test process is more stable, and therefore the problem that in the prior art, a cable rack for the transformer test does not limit the cable is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer auxiliary testing, in particular to a cable rack for transformer testing. Background Art

[0002] When testing finished transformers, high-voltage tests such as power frequency and induction withstand voltage tests are required. The voltage used in these tests is relatively high, so a certain insulation distance must be maintained between high-voltage cables to prevent phase breakdown. During product testing, the test area cannot be fixed, and the position of the transformer bushing may change depending on the size and quantity of the products. To facilitate cable movement to meet experimental needs, a certain length margin is left in the cables used for testing.

[0003] To improve experimental safety, laboratories often use cable racks to store and support cables. For example, the Chinese utility model patent with application number CN202220971259.0 discloses an insulated cable rack for transformer testing. In this solution, the three-phase cables are stored and used separately by using three brackets respectively, avoiding clutter and danger. However, in this solution, the movable end of the cable is wound around the bracket. During the experiment, the cable at this end is pulled out for wiring. Since the cable is freely wound on the bracket, the state of this section of cable is not easy to stabilize, which may affect the wiring with the transformer, so improvement is needed. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that a cable rack for transformer testing fails to limit the position of cables, and proposes a cable rack for transformer testing.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A cable rack for transformer testing comprises a movable bracket for supporting cables, wherein the bracket comprises a column with adjustable height, and a clamp for clamping the cable is provided at the top of the column.

[0007] Preferably, the bracket further comprises a bottom plate, four universal wheels with brakes are respectively provided at the four corners of the bottom of the bottom plate, and the column is fixedly provided on the upper surface of the bottom plate.

[0008] Preferably, the column includes a support tube and a support rod, the support rod is slidably arranged in the support tube, and the relative positions of the support tube and the support rod are limited by a latch.

[0009] Preferably, the clamp includes a lower clamp block and an upper clamp block, the rear end of the lower clamp block and the rear end of the upper clamp block are hinged, the lower clamp block is fixedly set on the top end of the support rod, and the front end of the upper clamp block and the front end of the lower clamp block are connected by a lock.

[0010] Preferably, the locking element includes a connecting rod, a sleeve, a clamping column and a spring. The top end of the connecting rod is hinged to the front end of the upper clamping block. The sleeve and the spring are sleeved on the connecting rod, and the spring is below the sleeve. The clamping column is fixedly arranged on the side of the sleeve.

[0011] Preferably, the locking element further comprises a slot provided at the lower portion of the front end of the lower clamping block, and the clamping column matches the slot.

[0012] Preferably, the bottom end of the spring is fixedly connected to the bottom end of the connecting rod, and the top end of the spring is fixedly connected to the bottom surface of the sleeve.

[0013] Compared with the prior art, the utility model provides a cable rack for transformer testing, which has the following beneficial effects.

[0014] 1. The utility model provides a bracket for storing and supporting cables, and a clamp for clamping the end of the cable connected to the transformer, so that the connection between the cable and the transformer is more stable during the test, thereby solving the problem in the prior art that the cable rack for transformer testing does not limit the cable.

[0015] 2. The utility model can change the height of the clamped cable by setting a retractable column. The height can be adjusted to make the height of the cable not much different from that of the transformer, thereby reducing the length of the cable between the column and the transformer as much as possible, reducing the weight of the cable section, and making it more difficult for the cable and transformer to move.

[0016] Other advantages, objectives and features of the present invention will be described in the following description to some extent; and will be apparent to those skilled in the art based on an examination of the following; or may be taught from the practice of the present invention to some extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a structural diagram of the center column of the utility model.

[0019] Figure 3 It is a structural schematic diagram of the clamp in the present utility model.

[0020] Figure 4 This is a schematic diagram of the disassembled structure of the clamp in the present invention.

[0021] Figure 5 It is a structural schematic diagram of the upper clamping block in the utility model.

[0022] Figure 6It is a structural schematic diagram of the lower clamping block in the utility model.

[0023] Figure 7 This is a schematic diagram of the utility model when supporting a cable.

[0024] In the picture:

[0025] 1. Universal wheel; 2. Base plate; 3. Support tube; 4. Support rod; 5. Lower clamping block; 6. Upper clamping block; 7. Connecting rod; 8. Spring; 9. Clamping column; 10. First socket; 11. Latch; 12. Second socket; 13. Slot; 14. First handle; 15. Second handle; 16. Sleeve; 17. Cable. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] Reference Figure 1-6 The cable rack for transformer testing includes a movable bracket for supporting a cable 17 , the bracket includes a height-adjustable column, and a clamp for clamping the cable 17 is provided at the top of the column.

[0028] In a specific embodiment of the present invention, the bracket is used to carry the reserved cable 17, and the clamp on the column is used to clamp the cable 17. During the test, the cable 17 between the column and the transformer is ensured to be relatively stable, thereby improving the stability of the cable 17.

[0029] The bracket also includes a bottom plate 2, and four universal wheels 1 with brakes are respectively provided at the four corners of the bottom of the bottom plate 2, and the column is fixedly provided on the upper surface of the bottom plate 2;

[0030] In this solution, the base plate 2 is used to carry the reserved cable 17, and the cable 17 is coiled around the column and placed on the base plate 2, such as Figure 7 As shown;

[0031] When in use, three of the devices can be used to carry three cables 17 of three-phase electricity respectively, so as to achieve the effect of separating the three cables 17 and avoid the danger of breakdown caused by the three cables 17 being too close to each other;

[0032] By adopting the universal wheel 1 with brakes, the device can be easily moved, and the brakes can be used to make the device stay at a certain position.

[0033] The column includes a support tube 3 and a support rod 4, the support rod 4 is slidably arranged in the support tube 3, and the relative position of the support tube 3 and the support rod 4 is limited by a latch 11; a second plug hole 12 is provided on the upper part of the support tube 3, and a plurality of first plug holes 10 are provided on the support rod 4. The latch 11 is inserted into the second plug hole 12 and the first plug hole 10 at the same time to limit the relative position between the support tube 3 and the support rod 4; by inserting the latch 11 into different first plug holes 10, it can be used to change the height of the support rod 4 extending, thereby changing the height of the clamp;

[0034] By providing a retractable column, the height of the clamp can be changed, thereby changing the height of the part of the clamped cable 17. This method can be used to minimize the length of the cable 17 required between the column and the transformer, thereby reducing the weight of this section of cable 17, making wiring more convenient. At the same time, due to the reduced weight, the wiring of the cable 17 and the transformer will not be greatly affected.

[0035] The clamp includes a lower clamping block 5 and an upper clamping block 6. The rear end of the lower clamping block 5 is hinged to the rear end of the upper clamping block 6. The lower clamping block 5 is fixedly mounted on the top of the support rod 4. The front end of the upper clamping block 6 is connected to the front end of the lower clamping block 5 by a locking member. Two lower clamping blocks 5 are arranged side by side. The spacing between the two lower clamping blocks 5 is greater than the width of the upper clamping block 6. This can reduce the minimum clamping size between the upper clamping block 6 and the lower clamping block 5, and is used to clamp cables 17 of different diameters.

[0036] By providing a lock, after clamping the cable 17 , the lock can be used to limit the position of the upper clamping block 6 , so that the upper clamping block 6 and the lower clamping block 5 can clamp the cable 17 together.

[0037] The lock component includes a connecting rod 7, a sleeve 16, a clamping column 9 and a spring 8. The top end of the connecting rod 7 is hinged to the front end of the upper clamping block 6. The sleeve 16 and the spring 8 are sleeved on the connecting rod 7, and the spring 8 is below the sleeve 16. The clamping column 9 is fixedly set on the side of the sleeve 16.

[0038] Two clamping columns 9 are provided, which are fixedly arranged on the two side surfaces of the sleeve 16 respectively. The provided spring 8 can apply an upward force to the sleeve 16.

[0039] The lock also includes a slot 13 provided at the lower front end of the lower clamping block 5 , and the clamping column 9 matches the slot 13 ; the two clamping columns 9 match the slots 13 on the two lower clamping blocks 5 respectively.

[0040] The bottom end of the spring 8 is fixedly connected to the bottom end of the connecting rod 7, and the top end of the spring 8 is fixedly connected to the bottom surface of the sleeve 16; a square block is fixedly provided at the bottom of the connecting rod 7, and the bottom end of the spring 8 is fixedly connected to the top surface of the square block.

[0041] In order to facilitate the movement of the sleeve 16, a second handle 15 is fixedly provided on the front side of the sleeve 16, and a first handle 14 is fixedly provided on the front side of the square block.

[0042] In this solution, the base plate 2 and the columns can be made of wood or insulating ceramics.

[0043] When the lock is in use, the upper clamping block 6 is first opened, and the cable 17 is placed in the lower clamping block 5. The upper clamping block 6 is then used to press the cable 17. The first grip 14 and the second grip 15 are then held by hand at the same time, so that the sleeve 16 overcomes the elastic force of the spring 8 and moves toward the square block, and then the post 9 is moved to the lower position of the slot 13. The first grip 14 and the second grip 15 are then released, so that the post 9 is locked in the slot 13. At this time, under the elastic force of the spring 8, the sleeve 16 and the square block are moved away from each other. Since the post 9 cannot move, the spring 8 will drive the connecting rod 7 to move downward, so that the upper clamping block 6 has a downward pressure to clamp the cable 17; when opening, hold the first grip 14 and the second grip 15 at the same time by hand, so that the post 9 is disengaged from the slot 13, and then move the post 9 out of the lower position of the lower clamping block 5 to open the upper clamping block 6; this setting can achieve the effect of quick clamping and quick release, which is convenient for adjusting the position of the clamped cable 17.

[0044] During the experiment, the position of the bracket is moved according to the height and position of the transformer to be tested. After the bracket is moved to the appropriate position, the height of the column is adjusted. Figure 7 The B end of the middle cable 17 is connected to the transformer, and the A end is connected to the power supply. The position of the cable 17 clamped by the clamp is adjusted according to the distance between the top of the column and the transformer, and the length of this section of cable 17 (that is, the distance from the top of the column to the wiring position of the transformer, but note that the extended length of the cable 17 must be greater than the aforementioned distance to leave a range of movement for the wiring) is reduced as much as possible. First, it reduces weight, and second, it can avoid unnecessary cables 17 being placed cluttered on the ground. As above, the three cables 17 and the three devices are arranged in the above manner, and the three devices must leave a certain distance to prevent the three cables 17 from touching. Through the above arrangement, the neatness of the cable 17 and the stability of the cable 17 can be effectively improved.

[0045] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0047] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. Transformer test cable rack, characterized by: The invention comprises a movable bracket for supporting a cable (17), wherein the bracket comprises a column with adjustable height, and a clamp for clamping the cable (17) is provided at the top of the column; three of the devices are used to respectively carry three cables (17) of three-phase electricity; The clamp comprises a lower clamping block (5) and an upper clamping block (6), the rear end of the lower clamping block (5) and the rear end of the upper clamping block (6) are hinged, the lower clamping block (5) is fixedly arranged on the top end of the support rod (4), and the front end of the upper clamping block (6) and the front end of the lower clamping block (5) are connected by a locking member; The locking element comprises a connecting rod (7), a sleeve (16), a clamping column (9) and a spring (8); the top end of the connecting rod (7) is hinged to the front end of the upper clamping block (6); the sleeve (16) and the spring (8) are sleeved on the connecting rod (7), and the spring (8) is below the sleeve (16); the clamping column (9) is fixedly arranged on the side of the sleeve (16); The locking element further comprises a clamping slot (13) provided at the lower portion of the front end of the lower clamping block (5), and the clamping column (9) matches the clamping slot (13).

2. The cable rack for transformer testing according to claim 1, characterized in that: The bracket further comprises a bottom plate (2), four universal wheels (1) with brakes are respectively provided at the four corners of the bottom of the bottom plate (2), and the upright column is fixedly provided on the upper surface of the bottom plate (2).

3. The cable rack for transformer testing according to claim 2, characterized in that: The column comprises a support tube (3) and a support rod (4); the support rod (4) is slidably arranged in the support tube (3); and the relative position of the support tube (3) and the support rod (4) is limited by a latch (11).

4. The cable rack for transformer testing according to claim 1, characterized in that: Two lower clamping blocks (5) are arranged side by side, and the distance between the two lower clamping blocks (5) is greater than the width of the upper clamping block (6); thereby reducing the minimum clamping size between the upper clamping block (6) and the lower clamping block (5), so as to achieve the goal of clamping cables (17) of different diameters.

5. The cable rack for transformer testing according to claim 4, characterized in that: Two clamping columns (9) are provided, which are fixedly provided on two side surfaces of the sleeve (16) respectively, and use the provided spring (8) to apply an upward force to the sleeve (16); the two clamping columns (9) are matched with the clamping grooves (13) on the two lower clamping blocks (5) respectively.

6. The cable rack for transformer testing according to claim 1, characterized in that: The bottom end of the spring (8) is fixedly connected to the bottom end of the connecting rod (7), and the top end of the spring (8) is fixedly connected to the bottom surface of the sleeve (16); A square block is fixedly provided at the bottom of the connecting rod (7), and the bottom end of the spring (8) is fixedly connected to the top surface of the square block; A second handle (15) is fixedly provided on the front of the sleeve (16), and a first handle (14) is fixedly provided on the front of the square block.

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