Stable-clamping current transformer

Abstract

The utility model discloses a stable clamping current transformer which comprises a current transformer body, the bottom of the current transformer body is fixedly connected with a lead screw, the lead screw is sleeved with an internal thread bushing in a threaded mode, the bottom of the internal thread bushing is fixedly connected with a disc, and the front side and the rear side of the disc are rotationally provided with the same U-shaped support. A plurality of clamping grooves are annularly formed in the outer side of the disc at equal intervals. By arranging a series of structures, the height of the current transformer body can be properly adjusted according to on-site use conditions, the two V-shaped clamping blocks can be horizontally rotated to adjust the clamping direction and longitudinally rotated to adjust the clamping direction, and the clamping direction of the current transformer body can be adjusted in the horizontal and longitudinal rotary adjusting mode. The clamping direction of the two V-shaped clamping blocks can be conveniently and flexibly adjusted in multiple directions according to site conditions, the applicability and the use flexibility are improved, clamping and fixing work can be conveniently carried out in the mode that the two V-shaped clamping blocks are driven to move close to each other, and the clamping stability and the anti-disengaging effect are improved through clamping and fixing.

Description

Technical Field

[0001] The utility model relates to the technical field of current transformers, in particular to a current transformer with stable clamping. Background Art

[0002] A current transformer is an instrument that converts large primary current into small secondary current for measurement based on the principle of electromagnetic induction. It consists of a closed iron core and windings. Current transformers typically need to be placed in a specific location for fixed use, and they often lack a stable clamping structure, making it difficult to quickly secure the current transformer to an object for use.

[0003] In this regard, after checking the new structure retrieval report, it was found that the announcement number CN221200870U discloses a current transformer with stable clamping, including a transformer body, a direction turntable arranged on the transformer body; the forward and reverse screws are rotatably arranged in the direction turntable; two clamping blocks are respectively threadedly connected and arranged on both sides of the forward and reverse screws and are relatively slidably arranged on the direction turntable; the driving component drives the forward and reverse screws to rotate, so that the two clamping blocks are close to or away from each other, thereby clamping or loosening the object; through the above technical solution, the problem in the prior art that it is difficult to quickly fix the current transformer on an object for use is solved.

[0004] The above technology discloses a current transformer with stable clamping, which drives two clamping blocks to perform clamping and fixing work through structures such as a screw rod, which is convenient for fixing. However, there are still the following shortcomings when used: 1. (Due to the complexity of the on-site installation environment, such as when the external bracket can only be clamped from the side due to on-site environmental factors, it cannot be reinforced by only using the vertical clamping block), the clamping direction of the two clamping blocks cannot be flexibly adjusted in multiple directions according to the clamping direction required by the position of the external bracket, and the applicability and flexibility of use are not ideal; 2. When the external bracket carrier is circular, the vertical clamping block has an unsatisfactory anti-detachment effect when clamped on the circular bracket; improvement is needed. In view of this, the present application proposes a current transformer with stable clamping to solve the above problems. Utility Model Content

[0005] The purpose of the present utility model is to provide a current transformer with stable clamping, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a current transformer with stable clamping, comprising a current transformer body, a screw rod fixedly connected to the bottom of the current transformer body, an internally threaded sleeve provided on the screw rod threaded sleeve, a disc fixedly connected to the bottom of the internally threaded sleeve, a U-shaped support rotatably mounted on the front and rear sides of the disc, and a plurality of slots equidistantly arranged in an annular shape on the outer side of the disc; the internally threaded sleeve cooperates with the screw rod to enable vertical displacement when the screw rod is rotated, thereby appropriately adjusting the height of the current transformer body;

[0007] The two-way threaded drive assembly is used to drive the two V-shaped clamping blocks to clamp closely or repel each other when the fixing box is pulled downward.

[0008] Preferably, the horizontal rotary adjustment assembly includes a circular sleeve fixedly connected to the top of the fixed box, a support plate is rotatably provided inside the circular sleeve, a knob-type bolt is movably contacted on the right top of the support plate, and a threaded through hole threadedly connected to the knob-type bolt is opened on the right inner wall of the circular sleeve.

[0009] Preferably, the elastic tension clamping assembly includes a U-shaped guide rod fixedly connected to the top of the support plate, the U-shaped support is slidably sleeved on the U-shaped guide rod, a spring is fixedly connected between the top inner wall of the U-shaped guide rod and the bottom inner wall of the U-shaped support, and a clamping block is fixedly connected to the top of the U-shaped guide rod, and the clamping block is movably mounted in a clamping slot at the bottom.

[0010] Preferably, the bidirectional threaded drive assembly includes a T-shaped guide rail fixedly connected to the inner wall at the top of the fixed box, two sliders are slidably installed on the T-shaped guide rail, the bottoms of the two sliders are respectively fixedly connected to the tops of the corresponding V-shaped clamping blocks, screws are rotatably installed on the inner walls on both sides of the fixed box, the two screws are fixedly connected at one end thereof, the threads of the two screws are rotated in opposite directions, the two sliders are respectively threadedly sleeved on the corresponding screws, and the right end of the screw on the right side extends to the outside of the fixed box and is fixedly connected to a knob.

[0011] Preferably, a rotating shaft is fixedly connected between the front and rear inner walls of the U-shaped support, a circular through-hole is opened at the front center of the disc, a first bearing is provided in the circular sleeve inside the circular through-hole, and the inner ring of the first bearing is fitted with the outer circular sleeve of the rotating shaft.

[0012] Preferably, a V-shaped anti-slip rubber pad is bonded and fixed to the inner side of the V-shaped clamping block.

[0013] Preferably, the elastic force of the spring is greater than the sum of the gravity of the U-shaped guide rod and all structures at its bottom.

[0014] Preferably, threaded holes are provided on adjacent sides of the two sliding blocks, and the threaded holes are threadedly connected to corresponding screw rods.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The height of the current transformer body can be adjusted appropriately according to the on-site usage by coordinating the disc, screw rod and current transformer body;

[0017] 2. Through the cooperation of the provided fixing box, disc, U-shaped support, horizontal rotation adjustment component, card slot and elastic clamping component, the clamping direction of the two V-shaped clamping blocks can be adjusted by horizontal rotation, and the clamping direction of the two V-shaped clamping blocks can be adjusted by longitudinal rotation. The horizontal clamping direction can be adjusted in combination with the longitudinal rotation adjustment method, which is convenient for multi-directional and flexible adjustment of the clamping direction of the two V-shaped clamping blocks according to the on-site conditions. For example, when the on-site bracket is left and right, the two V-shaped clamping blocks can be adjusted to the front and back setting; when the on-site bracket is front and back, the two V-shaped clamping blocks can be adjusted to the left and right setting; when the on-site bracket can only clamp the side, the two V-shaped clamping blocks can be adjusted to the left or right side; and when the on-site bracket is vertical, the two V-shaped clamping blocks can be adjusted to the left or right side and set front and back, thereby improving applicability and flexibility of use.

[0018] 3. By cooperating with the fixed box, the two-way threaded drive assembly and the V-shaped clamping block, the two V-shaped clamping blocks can be driven to move close to each other to perform the clamping work. By using the V-shaped clamping method on both sides, when clamped on the external circular bracket, the stable anti-slip effect of the support can be effectively improved.

[0019] The utility model is provided with a series of structures, which can appropriately adjust the height of the current transformer body according to the on-site usage conditions, and is convenient for adjusting the clamping direction of the two V-shaped clamps by horizontal rotation and longitudinal rotation. The horizontal and longitudinal rotational adjustment methods are used to facilitate the flexible adjustment of the clamping directions of the two V-shaped clamps in multiple directions according to the on-site conditions, thereby improving the applicability and flexibility of use, and facilitating the clamping work by driving the two V-shaped clamps to move close to each other, and utilizing the clamping clamping to improve the stable anti-slip effect of the clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of a clamping stable current transformer proposed by the utility model;

[0021] Figure 2 This is a schematic cross-sectional view of a stable clamping current transformer proposed by the present invention;

[0022] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of part A;

[0023] Figure 4 This is a structural schematic diagram of the two V-shaped clamping blocks for clamping a stable current transformer proposed by the present invention, which are rotated and adjusted to the right side.

[0024] In the figure: 1. Current transformer body; 101. Screw; 2. Internal threaded sleeve; 3. Disc; 301. Slot; 302. U-shaped support; 4. Fixing box; 401. Slider; 402. Screw; 403. Knob; 5. Round sleeve; 501. Support disc; 502. Knob-type bolt; 6. U-shaped guide rod; 601. Spring; 602. Block; 7. V-shaped clamp. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] like Figures 1 to 4 As shown, a current transformer with stable clamping proposed in this embodiment includes a current transformer body 1, a screw rod 101 is fixedly connected to the bottom of the current transformer body 1, an internal threaded sleeve 2 is provided on the threaded sleeve 101, a disc 3 is fixedly connected to the bottom of the internal threaded sleeve 2, and the front and rear sides of the disc 3 are rotatably mounted with the same U-shaped support 302, wherein a rotating shaft is fixedly connected between the front and rear inner walls of the U-shaped support 302, a circular through-hole is provided at the front center of the disc 3, a first bearing is provided in the circular through-hole inner sleeve, the inner ring of the first bearing is fitted with the outer circular sleeve of the rotating shaft, and the U-shaped support 302 and the disc 3 are rotatably connected and supported, and a plurality of slots 301 are provided in an annular shape with equal intervals on the outer side of the disc 3; the internal threaded sleeve 2 cooperates with the screw rod 101, and can move up and down when the screw rod 101 is rotated, thereby being able to appropriately adjust the height of the current transformer body 1;

[0027] A fixing box 4 with an opening at the bottom is provided below the U-shaped support 302, and a horizontal rotary adjustment component is fixedly connected to the top of the fixing box 4, and a spring clamping component that is movably mounted on a slot 301 at the bottom is fixedly connected to the top of the horizontal rotary adjustment component. The U-shaped support 302 is sleeved on the spring clamping component, and a two-way threaded drive component is installed in the fixing box 4. The bottom of the two-way threaded drive component is fixedly connected to two symmetrically arranged V-shaped clamping blocks 7, and a V-shaped anti-slip rubber pad is bonded and fixed to the inner side of the V-shaped clamping block 7; the horizontal rotary adjustment component is used to adjust the horizontal rotation of the fixing box 4, and the two V-shaped clamping blocks 7 are driven by the horizontal rotation of the fixing box 4. Horizontal rotation is used to adjust the clamping direction. The elastic clamping assembly is used to automatically separate from the card slot 301 and unlock and elastically store energy when a person pulls the fixed box 4 downward. After unlocking, it is convenient for the person to rotate the U-shaped support 302 left and right to drive the fixed box 4 to rotate left and right. The fixed box 4 is rotated left and right to drive the two V-shaped clamping blocks 7 to rotate longitudinally to adjust the clamping direction. The elastic clamping assembly is also used to automatically clamp and lock with the aligned card slot 301 by utilizing the elastic storage capacity when the tension is released. The two-way threaded drive assembly is used to drive the two V-shaped clamping blocks 7 to clamp closely or repel and separate. The provided V-shaped anti-slip rubber pad is used to improve the anti-slip performance during clamping.

[0028] Specifically, the horizontal rotary adjustment component includes a circular sleeve 5 fixedly connected to the top of the fixed box 4, and a support disk 501 is rotatably sleeved in the circular sleeve 5, wherein a second bearing is fixedly sleeved in the circular sleeve 5, and the inner ring of the second bearing is fixedly sleeved with the outer side of the support disk 501, which plays the effect of rotating connection and installation between the support disk 501 and the circular sleeve 5, and a knob-type bolt 502 is movably contacted at the top right side of the support disk 501, and a threaded through hole threadedly connected to the knob bolt 502 is opened on the right inner wall of the circular sleeve 5; the circular sleeve 5, the support disk 501, the knob-type bolt 502 are threadedly connected to the circular sleeve 5. The bolt 502 cooperates with the threaded through hole, and the knob-type bolt 502 is rotated in the reverse direction to separate it from the support plate 501, releasing the squeezed and locked state. The horizontal rotation of the fixing box 4 drives the circular sleeve 5 to rotate outside the support plate 501. When the fixing box 4 drives the two V-shaped clamping blocks 7 to rotate horizontally to the required clamping direction, such as when the left and right clamping is changed to the front and back clamping, the knob-type bolt 502 is rotated forward to squeeze it with the support plate 501, thereby locking the circular sleeve 5, and then locking the adjusted fixing box 4, and achieving the effect of adjusting the clamping direction of the two V-shaped clamping blocks 7 by horizontal rotation.

[0029] Furthermore, the elastic clamping assembly includes a U-shaped guide rod 6 fixedly connected to the top of the support plate 501, and the U-shaped support 302 is slidably sleeved on the U-shaped guide rod 6, wherein the bottom of the U-shaped support 302 is provided with two rectangular guide holes that are in sliding contact with the outer side of the U-shaped guide rod 6, which play the role of allowing the U-shaped guide rod 6 to pass through and guide its vertical sliding. A spring 601 is fixedly connected between the top inner wall of the U-shaped guide rod 6 and the bottom inner wall of the U-shaped support 302, and the top of the U-shaped guide rod 6 is fixedly connected The clamping block 602 is connected and is movably mounted in a clamping slot 301 at the bottom. The elastic force of the spring 601 is greater than the sum of the gravity of the U-shaped guide rod 6 and all the structures at its bottom. The U-shaped guide rod 6, spring 601 and clamping block 602 cooperate with each other. When a person pulls the fixed box 4 downward, the fixed box 4 drives the U-shaped guide rod 6 downward through the circular sleeve 5 and the support plate 501 in turn, and compresses the spring 601 to store energy. The U-shaped guide rod 6 drives the clamping block 602 to separate from the clamping slot 301. The U-shaped guide rod 6 drives the clamping block 602 to snap into the aligned clamping groove 301 at this time, so as to realize the locking of the position of the U-shaped support 302, thereby realizing the locking of the fixing box 4 after the left and right rotation adjustment is adjusted, and the effect of adjusting the clamping direction of the two V-shaped clamping blocks 7 by longitudinal rotation is realized. The horizontal clamping direction is adjustable and the longitudinal rotation adjustment is combined, which makes it convenient to flexibly adjust the clamping direction of the two V-shaped clamping blocks 7 in multiple directions according to the on-site conditions, thereby improving applicability.

[0030] Furthermore, the bidirectional threaded drive assembly includes a T-shaped guide rail fixedly connected to the top inner wall of the fixed box 4, and two sliders 401 are slidably installed on the T-shaped guide rail, wherein the top of the slider 401 is provided with a T-shaped slide groove with openings on both sides, and the T-shaped slide groove is slidably connected to the T-shaped guide rail, which plays the effect of guiding the horizontal sliding of the slider 401, and the bottoms of the two sliders 401 are respectively fixedly connected to the tops of the corresponding V-shaped clamping blocks 7, and screws 402 are rotatably installed on the inner walls of both sides of the fixed box 4, wherein circular holes are provided on the inner walls of both sides of the fixed box 4, and a third bearing is fixedly sleeved in the circular hole, and the inner side of the inner ring of the third bearing is fixedly connected to the outer side of the corresponding screw 402, which plays the effect of rotatably installing the screw 402, and the proximal ends of the two screws 402 are fixedly connected, and the threads of the two screws 402 have opposite rotation directions, and the two sliders 401 are respectively threadedly sleeved on the corresponding screws 402. 402, and the two sliders 401 are provided with threaded holes on the adjacent sides, and the threaded holes are threadedly connected to the corresponding screw rods 402. The threaded connection relationship between the screw rods 402 and the threaded holes, combined with the opposite rotation directions of the two screw rods 402, facilitates the effect of driving the two sliders 401 to move closer or repel each other when the two screw rods 402 rotate. The right end of the screw rod 402 on the right side extends to the outside of the fixed box 4 and is fixedly connected to the knob 403. The T-shaped guide rail, slider 401, screw 402 and knob 403 are coordinated. Turning the knob 403 drives the two screws 402 to rotate synchronously. The rotation of the two screws 402 drives the two sliders 401 to move closer or repel each other. The close displacement of the two sliders 401 drives the two V-shaped clamping blocks 7 to clamp and fix on the external bracket. The V-shaped shape of the V-shaped clamping block 7 can stably perform the clamping and anti-slip work when the external bracket is circular.

[0031] The method of use of this embodiment is as follows: when adjusting the clamping direction, especially when adjusting the clamping direction horizontally, for example, when the left and right clamping needs to be adjusted to the front and back clamping, first rotate the knob-type bolt 502 in the opposite direction to separate it from the support plate 501, and release the squeezed and locked state. At this time, the horizontal rotation of the fixing box 4 drives the circular sleeve 5 to rotate outside the support plate 501, and the fixing box 4 drives the two V-shaped clamping blocks 7 to rotate horizontally through the T-shaped guide rail and the two sliders 401 in turn. When the two V-shaped clamping blocks 7 rotate horizontally to the required clamping direction, the knob-type bolt 502 is rotated forward to squeeze it with the support plate 501, so as to lock the circular sleeve 5, and then lock the adjusted fixing box 4, so as to achieve the effect of adjusting the clamping direction of the two V-shaped clamping blocks 7 by horizontal rotation;

[0032] When the fixing box 4 needs to be adjusted left and right for convenient clamping, in order to adapt to the external bracket that can only be clamped at the side on site, when the personnel pulls the fixing box 4 downward, the fixing box 4 drives the U-shaped guide rod 6 to move downward through the circular sleeve 5 and the support plate 501 in turn, and compresses the spring 601 to store energy, and the U-shaped guide rod 6 drives the clamping block 602 to separate from the clamping groove 301, releasing the clamping state. At this time, the personnel can rotate the fixing box 4 to the left or right according to the position of the external bracket. The fixing box 4 drives the U-shaped support 302 to rotate left or right on the outside of the disc 3 through the circular sleeve 5, the support plate 501 and the U-shaped guide rod 6 in turn. After the fixing box 4 drives the two V-shaped clamping blocks 7 to rotate to the appropriate left or right position, the tension on the fixing box 4 is gradually relaxed. At this time, the elastic force of the spring 601 in the compressed state drives the U-shaped guide rod 6 to move back and reset, and the U-shaped guide rod 6 drives the clamping block 60 2 is inserted into the aligned card slot 301 at this time, so as to realize the position locking of the U-shaped support 302, and then realize the locking of the fixing box 4 after the left and right rotation adjustment, so as to facilitate the longitudinal rotation adjustment of the two V-shaped clamping blocks 7 to adjust the clamping direction. By utilizing the adjustable horizontal clamping direction and the longitudinal rotation adjustment method, the clamping direction of the two V-shaped clamping blocks 7 can be flexibly adjusted in multiple directions according to the on-site conditions. For example, when the on-site bracket is left and right, the two V-shaped clamping blocks 7 can be adjusted to the front and back setting; when the on-site bracket is front and back, the two V-shaped clamping blocks 7 can be adjusted to the left and right setting; when the on-site bracket can only be clamped to the side, the two V-shaped clamping blocks 7 can be adjusted to the left or right side; and when the on-site bracket is vertical, the two V-shaped clamping blocks 7 can be adjusted to the left or right side and set front and back. The multi-directional adjustment method is used to improve applicability and flexibility of use.

[0033] When clamping and fixing, move this device so that the part of the external bracket to be clamped is located between the two V-shaped clamping blocks 7, and turn the knob 403 forward to drive the two screws 402 to rotate synchronously. The rotation of the two screws 402 drives the two sliders 401 to slide close to each other on the T-shaped guide rail, and the two sliders 401 drive the two V-shaped clamping blocks 7 to clamp and fix them on the external bracket in the middle. The V-shaped shape of the V-shaped clamping blocks 7 is combined with the V-shaped anti-slip rubber pad. When the external bracket is circular, it can be stably clamped and fixed, thereby improving the stable and anti-slip effect of the clamping; the personnel rotates the screw 101 to make it rotate and move upward in the internal threaded sleeve 2, thereby driving the current transformer body 1 to move upward, and the height of the current transformer body 1 can be appropriately adjusted according to on-site usage.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A current transformer with stable clamping, comprising a current transformer body (1), wherein a screw rod (101) is fixedly connected to the bottom of the current transformer body (1), and characterized in that: The threaded sleeve on the screw rod (101) is provided with an internal threaded sleeve (2), the bottom of the internal threaded sleeve (2) is fixedly connected to a disc (3), the front and rear sides of the disc (3) are rotatably mounted with a same U-shaped support (302), and the outer side of the disc (3) is provided with a plurality of slots (301) at equal intervals in an annular shape; A fixing box (4) with an opening at the bottom is provided below the U-shaped support (302), a horizontal rotary adjustment component is fixedly connected to the top of the fixing box (4), a spring clamping component movably mounted in a bottommost clamping slot (301) is fixedly connected to the top of the horizontal rotary adjustment component, the U-shaped support (302) is sleeved on the spring clamping component, a bidirectional threaded drive component is installed in the fixing box (4), and two symmetrically arranged V-shaped clamping blocks (7) are fixedly connected to the bottom of the bidirectional threaded drive component.

2. The clamping stable current transformer according to claim 1, characterized in that: The horizontal rotary adjustment component comprises a circular sleeve (5) fixedly connected to the top of the fixed box (4); a support disk (501) is rotatably sleeved inside the circular sleeve (5); a knob-type bolt (502) is movably contacted on the top right side of the support disk (501); and a threaded through hole threadedly connected to the knob-type bolt (502) is provided on the right inner wall of the circular sleeve (5).

3. The clamping stable current transformer according to claim 2, characterized in that: The elastic clamping assembly comprises a U-shaped guide rod (6) fixedly connected to the top of the support plate (501); the U-shaped support (302) is slidably sleeved on the U-shaped guide rod (6); a spring (601) is fixedly connected between the top inner wall of the U-shaped guide rod (6) and the bottom inner wall of the U-shaped support (302); a clamping block (602) is fixedly connected to the top of the U-shaped guide rod (6); and the clamping block (602) is movably clamped in a lowermost clamping slot (301).

4. The clamping stable current transformer according to claim 1, characterized in that: The bidirectional thread drive assembly comprises a T-shaped guide rail fixedly connected to the inner wall at the top of the fixed box (4); two sliders (401) are slidably mounted on the T-shaped guide rail; the bottoms of the two sliders (401) are respectively fixedly connected to the tops of the corresponding V-shaped clamping blocks (7); screw rods (402) are rotatably mounted on the inner walls on both sides of the fixed box (4); the two screw rods (402) are fixedly connected at one end thereof; the threads of the two screw rods (402) rotate in opposite directions; the two sliders (401) are respectively threadedly sleeved on the corresponding screw rods (402); the right end of the screw rod (402) on the right side extends to the outside of the fixed box (4) and is fixedly connected to a knob (403).

5. The clamping stable current transformer according to claim 1, characterized in that: A rotating shaft is fixedly connected between the front and rear inner walls of the U-shaped support (302). A circular through hole is provided at the front center of the disc (3). A first bearing is provided in the circular sleeve of the circular through hole. The inner ring of the first bearing is sleeved with the outer circle of the rotating shaft.

6. The clamping stable current transformer according to claim 1, characterized in that: A V-shaped anti-slip rubber pad is bonded and fixed to the inner side of the V-shaped clamping block (7).

7. The clamping stable current transformer according to claim 3, characterized in that: The elastic force of the spring (601) is greater than the sum of the weights of the U-shaped guide rod (6) and all structures at its bottom.

8. The clamping stable current transformer according to claim 4, characterized in that: A threaded hole is provided on one side of the two sliders (401) adjacent to each other, and the threaded hole is threadedly connected to the corresponding screw rod (402).

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