Power transformer capable of preventing cable from loosening

Abstract

The invention provides a power transformer capable of preventing a cable from loosening, and relates to the technical field of power transformers. The power transformer capable of preventing the cable from loosening comprises a power transformer main body, a through hole is formed in the middle of the power transformer main body, a rectangular hole is formed in the upper side of the power transformer main body, a connecting unit for installing the cable is arranged on the inner side of the rectangular hole, a protective cover is arranged on the upper side of the power transformer main body, and the protective cover is arranged on the upper side of the power transformer main body. Two mounting holes are formed in the outer side of the protective cover, the connecting unit comprises a fixing plate, and the fixing plate is fixedly connected between the left inner wall and the right inner wall of the rectangular hole. By arranging the fixing plate, the fixing frame, the screw, the rotating cap, the lifting plate, a spring, a control block, a trapezoidal block, a second guide plate, a guide block, a movable plate, a second clamping block and a first clamping block, the screw can conveniently limit a cable, the second clamping block moves close to the first clamping block, the cable is conveniently limited, the cable is conveniently limited, and the cable is prevented from falling off.

Description

Technical Field

[0001] The present invention relates to the technical field of power transformers, and specifically to a power transformer for preventing cable loosening. Background Art

[0002] Power transformers are key devices used for measurement and protection in power systems. They are mainly used to convert high voltages and large currents into standardized low voltages and small current signals for the safe use of devices such as meters and relay protection devices.

[0003] When connecting a power transformer, first pass the main wire through the P terminal of the transformer, and then connect the cable to the S1 and S2 terminals of the transformer. The S2 terminal is connected to the ground wire. When installing a BH-0.66 series current transformer, for example, it is necessary to turn the screws at the S1 and S2 terminals to limit the connection piece of the cable. Although one end of the cable is limited by the screw, the outside of the cable is not limited, making it easy for the cable to loosen due to external vibration, and the cable routing is messy, affecting the connection stability of the cable. Summary of the Invention

[0004] (I) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the present invention provides a power transformer for preventing cable loosening, which solves the problems of unstable cable connection and messy cable routing in power transformers.

[0006] (II) Technical Solutions

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A power transformer for preventing cable loosening, including a power transformer main body. A perforation is provided in the middle of the power transformer main body, and a rectangular hole is provided on the upper side of the power transformer main body. A connection unit for installing the cable is provided inside the rectangular hole. A protective cover is provided on the upper side of the power transformer main body. Two mounting holes are provided on the outer side of the protective cover. The connection unit includes a fixing plate, which is fixedly connected between the left and right inner walls of the rectangular hole. Two fixing frames are fixedly connected to the upper side of the fixing plate. Screws are provided on the outer sides of the fixing frames, and the upper ends of the screws are fixedly connected to turning caps. A limiting component for firmly connecting the cable is provided on the lower side of the fixing plate, and a stabilizing component is provided on the upper side of the fixing frame.

[0008] Preferably, the limiting component includes a spring. The spring is fixedly connected to the lower side of the fixed plate. A lifting plate is fixedly connected to the lower side of the spring. A contact disc and a control block are fixedly connected to the upper side of the lifting plate. A trapezoidal block is fixedly connected to the upper side of the control block. A second guide plate and a T-shaped block are fixedly connected to the upper side of the fixed plate. A guide block is slidably connected to the outside of the second guide plate. A moving plate is fixedly connected to the upper side of the guide block. A second clamping block is fixedly connected to the outside of the moving plate. A first clamping block is fixedly connected to the side of the T-shaped block close to the second clamping block. A stabilizing hole is formed in the upper side of the fixed plate.

[0009] Preferably, a first rotating block is fixedly connected to the front side of the guide block. An inclined plate is rotatably connected to the outside of the first rotating block. A second rotating block is rotatably connected to the outside of the front end of the inclined plate. A resisting block is fixedly connected to the front side of the second rotating block. A resisting rod is fixedly connected to the front side of the resisting block. The resisting rod abuts against the trapezoidal block. A telescopic rod is fixedly connected between the resisting block and the second guide plate.

[0010] Preferably, both the first clamping block and the second clamping block are arranged in an arc structure. Anti-slip grooves are formed in the inner walls of the first clamping block and the second clamping block.

[0011] Preferably, a bottom plate is fixedly connected to the lower side of the fixed plate. A lifting block is slidably connected to the outside of the bottom plate. A side plate is fixedly connected to the outside of the lifting block. The side plate is fixedly connected to the lifting plate.

[0012] Preferably, the stabilizing component includes a first guide plate. The first guide plate is fixedly connected to the upper side of the fixed frame. Sliding plates are slidably connected to the outside of the first guide plate and on the left and right sides of the rotary cap. Connecting blocks are fixedly connected to the upper sides of the sliding plates on the left and right sides. Stabilizing blocks are fixedly connected to the outside of the connecting blocks.

[0013] Preferably, two top blocks are fixedly connected to the upper side of the first guide plate. Moving blocks are fixedly connected to the upper sides of the sliding plates on the left and right sides. A bidirectional screw rod is rotatably connected between the two top blocks. Opposite threads are provided at both ends of the bidirectional screw rod. The two ends of the bidirectional screw rod are respectively threadedly connected to the moving blocks on the left and right sides. A rotating handle is fixedly connected to the outer end of the bidirectional screw rod.

[0014] (III) Beneficial effects

[0015] The present invention provides a power transformer for preventing cable loosening. It has the following beneficial effects:

[0016] 1. By providing a fixed plate, a fixed frame, screws, a rotary cap, a lifting plate, a spring, a control block, a trapezoidal block, a second guide plate, a guide block, a moving plate, a second clamping block and a first clamping block, it is convenient for the screws to limit the cable, making the second clamping block move closer to the first clamping block, which is convenient for limiting the cable and avoiding the cable from falling off.

[0017] 2. By providing a first guide plate, a sliding plate, a stabilizing block and a bidirectional screw rod, it is convenient to rotate the bidirectional screw rod to limit the rotating cap on the screw, making the limit of the cable by the screw more stable and avoiding loosening at the cable connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall three-dimensional structure diagram of a power transformer for preventing cable loosening proposed by the present invention;

[0019] Figure 2 It is a communication structure diagram of a connection unit in a power transformer for preventing cable loosening proposed by the present invention;

[0020] Figure 3 It is a partial three-dimensional structure diagram of a connection unit in a power transformer for preventing cable loosening proposed by the present invention;

[0021] Figure 4 It is a partial three-dimensional structure diagram of another perspective of a connection unit in a power transformer for preventing cable loosening proposed by the present invention;

[0022] Figure 5 It is Figure 4 an enlarged view of part A in

[0023] Figure 6 It is a three-dimensional structure diagram of a stabilizing component in a power transformer for preventing cable loosening proposed by the present invention.

[0024] Among them, 1. Power transformer main body; 2. Perforation; 3. Protective cover; 4. Rectangular hole; 5. Mounting hole; 6. Connection unit; 61. Fixed plate; 62. Fixed frame; 63. Screw; 64. Rotating cap; 65. Stabilizing component; 66. Limiting component;

[0025] 651. First guide plate; 652. Sliding plate; 653. Moving block; 654. Top block; 655. Bidirectional screw rod; 656. Turning handle; 657. Connection block; 658. Stabilizing block;

[0026] 661. Spring; 662. Lifting plate; 663. Bottom plate; 664. Lifting block; 665. Side plate; 666. Contact plate; 667. Control block; 668. Trapezoidal block; 669. Stabilizing hole; 6610. T-shaped block; 6611. First clamping block; 6612. Second clamping block; 6613. Moving plate; 6614. Guide block; 6615. Second guide plate; 6616. First rotating block; 6617. Inclined plate; 6618. Telescopic rod; 6619. Second rotating block; 6620. Resisting block; 6621. Resisting rod. SPECIFIC EMBODIMENTS

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] Embodiment 1:

[0029] As Figure 1 - Figure 5 shown, the embodiment of the present invention provides a power transformer for preventing cable loosening, including a power transformer main body 1. A through hole 2 is opened in the middle of the power transformer main body 1. A rectangular hole 4 is opened on the upper side of the power transformer main body 1. A connection unit 6 for installing the cable is arranged inside the rectangular hole 4. A protective cover 3 is arranged on the upper side of the power transformer main body 1. Two mounting holes 5 are opened on the outer side of the protective cover 3. The connection unit 6 includes a fixing plate 61. The fixing plate 61 is fixedly connected between the left and right inner walls of the rectangular hole 4. Two fixing frames 62 are fixedly connected to the upper side of the fixing plate 61. A screw 63 is arranged on the outer side of the fixing frame 62. The upper end of the screw 63 is fixedly connected with a turning cap 64. A limiting component 66 for firmly connecting the cable is arranged on the lower side of the fixing plate 61. A stabilizing component 65 is arranged on the upper side of the fixing frame 62. The two screws 63 arranged are convenient for connecting the S1 end and the S2 end of the power transformer main body 1. The through hole 2 is convenient for the main wire to pass through the power transformer main body 1.

[0030] The limit component 66 includes a spring 661. The spring 661 is fixedly connected to the lower side of the fixed plate 61. The lower side of the spring 661 is fixedly connected with a lifting plate 662. The upper side of the lifting plate 662 is fixedly connected with a contact disc 666 and a control block 667. The upper side of the control block 667 is fixedly connected with a trapezoidal block 668. The upper side of the fixed plate 61 is fixedly connected with a second guide plate 6615 and a T-shaped block 6610. The outer side of the second guide plate 6615 is slidably connected with a guide block 6614. The upper side of the guide block 6614 is fixedly connected with a moving plate 6613. The outer side of the moving plate 6613 is fixedly connected with a second clamping block 6612. One side of the T-shaped block 6610 close to the second clamping block 6612 is fixedly connected with a first clamping block 6611. The upper side of the fixed plate 61 is provided with a stabilizing hole 669. The lower side of the fixed plate 61 is fixedly connected with a bottom plate 663. The outer side of the bottom plate 663 is slidably connected with a lifting block 664. The outer side of the lifting block 664 is fixedly connected with a side plate 665. The side plate 665 is fixedly connected with the lifting plate 662. The front side of the guide block 6614 is fixedly connected with a first rotating block 6616. The outer side of the first rotating block 6616 is rotatably connected with an inclined plate 6617. The outer side of the front end of the inclined plate 6617 is rotatably connected with a second rotating block 6619. The front side of the second rotating block 6619 is fixedly connected with a resisting block 6620. The front side of the resisting block 6620 is fixedly connected with a resisting rod 6621. The resisting rod 6621 abuts against the trapezoidal block 668. A telescopic rod 6618 is fixedly connected between the resisting block 6620 and the second guide plate 6615. Among them, the lifting plate 662 is electrically connected to the main body 1 of the power transformer. When connecting the cable, first loosen and remove the screw 63, place the connecting piece (circular ring) of the cable on the fixed frame 62. Both the fixed frame 62 and the fixed plate 61 are provided with screw holes adapted to the screw 63. Then rotate the screw 63 to limit the cable. At the same time, the screw 63 passes through the lower side of the fixed plate 61 and contacts the contact disc 666. Continue to rotate the screw 63 to drive the lifting plate 662 on the contact disc 666 to descend. The lifting plate 662 drives the control block 667 to descend. The control block 667 drives the trapezoidal block 668 to descend. The trapezoidal block 668 squeezes the resisting rod 6621 to move backward. The resisting rod 6621 drives the resisting block 6620 to move backward. The resisting block 6620 drives the inclined plate 6617 to rotate. The inclined plate 6617 drives the guide block 6614 to move. The guide block 6614 drives the moving plate 6613 to move. The moving plate 6613 drives the second clamping block 6612 to move, so that the second clamping block 6612 approaches the first clamping block 6611, and the cable is placed between the second clamping block 6612 and the first clamping block 6611, so that the cable is limited, the stability of the cable connection is increased, it is not easy to fall off, and the cable is arranged.

[0031] Both the first clamping block 6611 and the second clamping block 6612 are arranged in an arc structure. Anti-slip grooves are provided on the inner walls of the first clamping block 6611 and the second clamping block 6612. The anti-slip grooves provided increase the friction between the first clamping block 6611, the second clamping block 6612 and the cable, and increase the limiting effect.

[0032] Embodiment 2

[0033] As Figure 6 shown, the stabilizing component 65 includes a first guide plate 651. The first guide plate 651 is fixedly connected to the upper side of the fixed frame 62. On the outer side of the first guide plate 651 and on the left and right sides of the rotating cap 64, there are slidingly connected sliding plates 652. On the upper sides of the left and right sliding plates 652, there are fixedly connected connecting blocks 657. On the outer side of the connecting block 657, there is fixedly connected a stabilizing block 658. On the upper side of the first guide plate 651, there are fixedly connected two top blocks 654. On the upper sides of the left and right sliding plates 652, there are fixedly connected moving blocks 653. Between the two top blocks 654, there is a rotatably connected bidirectional screw 655. The two ends of the bidirectional screw 655 are provided with opposite threads. The two ends of the bidirectional screw 655 are respectively threadedly connected to the left and right moving blocks 653. The outer end of the bidirectional screw 655 is fixedly connected with a rotating handle 656. After the cable is limited, rotate the rotating handle 656. The rotating handle 656 drives the bidirectional screw 655 to rotate. The bidirectional screw 655 drives the left and right moving blocks 653 to approach each other. The moving block 653 drives the sliding plate 652 to move. The sliding plate 652 drives the connecting block 657 to move. The connecting block 657 drives the stabilizing block 658 to move, so that the left and right stabilizing blocks 658 approach each other, and the stabilizing block 658 limits the rotating cap 64, making the screw 63 not easy to loosen and increasing the stability of the cable connection.

[0034] Working principle: When in use, the staff first loosens the screw 63, places the connecting piece of the cable on the fixed frame 62, and then rotates the screw 63 to limit the connecting wire. At the same time, the screw 63 drives the lifting plate 662 to descend. The lifting plate 662 drives the trapezoidal block 668 to descend. Under the action of the abutting rod 6621, the abutting block 6620, the inclined plate 6617, the guide block 6614 and the moving plate 6613, the second clamping block 6612 is controlled to limit the cable, making the cable not easy to fall off. Then rotate the rotating handle 656 to control the rotation of the bidirectional screw 655. Under the action of the moving block 653, the sliding plate 652 and the connecting block 657, the stabilizing block 658 is controlled to limit the rotating cap 64, making the cable connection more stable.

[0035] Although the embodiments of the present invention 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 invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power transformer for preventing cable loosening, comprising a power transformer main body (1), wherein a perforation (2) is formed in the middle of the power transformer main body (1), and it is characterized in that: A rectangular hole (4) is formed in the upper side of the main body (1) of the power transformer. A connection unit (6) for installing cables is arranged inside the rectangular hole (4). A protective cover (3) is arranged on the upper side of the main body (1) of the power transformer. Two mounting holes (5) are formed in the outer side of the protective cover (3). The connection unit (6) includes a fixing plate (61). The fixing plate (61) is fixedly connected between the left and right inner walls of the rectangular hole (4). Two fixing frames (62) are fixedly connected to the upper side of the fixing plate (61). A screw (63) is arranged on the outer side of the fixing frame (62). The upper end of the screw (63) is fixedly connected with a rotating cap (64). A limiting component (66) for firmly connecting the cables is arranged on the lower side of the fixing plate (61). A stabilizing component (65) is arranged on the upper side of the fixing frame (62).

2. The power transformer for preventing cable loosening according to claim 1, wherein: The limiting component (66) includes a spring (661). The spring (661) is fixedly connected to the lower side of the fixing plate (61). A lifting plate (662) is fixedly connected to the lower side of the spring (661). A contact disc (666) and a control block (667) are fixedly connected to the upper side of the lifting plate (662). A trapezoidal block (668) is fixedly connected to the upper side of the control block (667). A second guide plate (6615) and a T-shaped block (6610) are fixedly connected to the upper side of the fixing plate (61). A guide block (6614) is slidably connected to the outer side of the second guide plate (6615). A moving plate (6613) is fixedly connected to the upper side of the guide block (6614). A second clamping block (6612) is fixedly connected to the outer side of the moving plate (6613). A first clamping block (6611) is fixedly connected to the side of the T-shaped block (6610) close to the second clamping block (6612). A stabilizing hole (669) is formed in the upper side of the fixing plate (61).

3. The power transformer for preventing cable loosening according to claim 2, wherein: A first rotating block (6616) is fixedly connected to the front side of the guide block (6614). An inclined plate (6617) is rotatably connected to the outer side of the first rotating block (6616). A second rotating block (6619) is rotatably connected to the outer side of the front end of the inclined plate (6617). A resisting block (6620) is fixedly connected to the front side of the second rotating block (6619). A resisting rod (6621) is fixedly connected to the front side of the resisting block (6620). The resisting rod (6621) abuts against the trapezoidal block (668). A telescopic rod (6618) is fixedly connected between the resisting block (6620) and the second guide plate (6615).

4. A power transformer for preventing cable loosening according to claim 2, characterized in that: Both the first clamping block (6611) and the second clamping block (6612) are arranged in an arc structure. Anti-slip grooves are formed in the inner walls of the first clamping block (6611) and the second clamping block (6612).

5. A power transformer for preventing cable loosening according to claim 2, characterized in that: A bottom plate (663) is fixedly connected to the lower side of the fixing plate (61). A lifting block (664) is slidably connected to the outer side of the bottom plate (663). A side plate (665) is fixedly connected to the outer side of the lifting block (664). The side plate (665) is fixedly connected to the lifting plate (662).

6. A power transformer for preventing cable loosening according to claim 1, characterized in that: The stabilizing component (65) includes a first guide plate (651), the first guide plate (651) is fixedly connected to the upper side of the fixed frame (62), and sliding plates (652) are slidably connected to the outer sides of the first guide plate (651) and on the left and right sides of the rotating cap (64). Connecting blocks (657) are fixedly connected to the upper sides of the sliding plates (652) on the left and right sides, and stabilizing blocks (658) are fixedly connected to the outer sides of the connecting blocks (657).

7. A power transformer for preventing cable loosening according to claim 6, characterized in that: Two top blocks (654) are fixedly connected to the upper side of the first guide plate (651), moving blocks (653) are fixedly connected to the upper sides of the sliding plates (652) on the left and right sides, a bidirectional screw rod (655) is rotatably connected between the two top blocks (654), opposite threads are provided at both ends of the bidirectional screw rod (655), the two ends of the bidirectional screw rod (655) are respectively threadedly connected to the moving blocks (653) on the left and right sides, and a rotating handle (656) is fixedly connected to the outer end of the bidirectional screw rod (655).

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