Three-phase combined overvoltage protector

Abstract

The utility model discloses a three-phase combined overvoltage protector, which belongs to the technical field of power grid overvoltage protection and comprises protector bodies, a base and a mounting plate, the number of the protector bodies is three, the protector bodies are fixed at the top of the base, and the base is connected with the mounting plate through a damping mechanism; two symmetrically-arranged damping shock absorbers are fixed to the top of the mounting plate, connecting blocks are fixed to the tops of the damping shock absorbers, and connectors are fixed to the tops of the connecting blocks and fixed to the bottom of the base; unfolding mechanisms are mounted on the two sides of the top of the mounting plate, second connecting rods in one-to-one correspondence with the unfolding mechanisms are mounted on the outer wall of the connecting block, each unfolding mechanism comprises a mounting block, third connecting rods are rotationally arranged at the two ends of the outer wall of the mounting block, and foot pads are fixed to the positions, away from the mounting block, of the outer walls of the third connecting rods. The shock-absorbing and protecting device has a certain shock-absorbing and protecting effect, and meanwhile, the supporting area can be increased when the shock-absorbing and protecting device is pressed, so that the supporting is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of overvoltage protection of electric power grids, in particular to a three-phase combined overvoltage protector. Background Art

[0002] The three-phase combined overvoltage protector is a new type of overvoltage protector, which is mainly used in the power grid of power generation, power supply and power consumption enterprises. It is used to protect electrical equipment such as transformers, switches, busbars, motors, etc. It can limit atmospheric overvoltage and operating overvoltage caused by various switches, and can reliably limit overvoltage between phases and relative to ground.

[0003] However, the existing three-phase combined overvoltage protector generally has the defect of poor vibration resistance. The existing three-phase combined overvoltage protector usually directly fixes its bottom mounting base on the mounting part of the electrical cabinet by screws. Due to the vibration factor, its working stability is poor and its service life is short, which cannot meet the installation requirements of the device. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a three-phase combined overvoltage protector.

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

[0006] A three-phase combined overvoltage protector comprises a protector body, a base and a mounting plate, wherein the protector body is provided with three, the protector body is fixed on the top of the base, and the base and the mounting plate are connected by a shock absorbing mechanism;

[0007] Two symmetrically arranged damping shock absorbers are fixed on the top of the mounting plate, a connecting block is fixed on the top of the damping shock absorber, a connecting head is fixed on the top of the connecting block, and the connecting head is fixed on the bottom of the base;

[0008] Both sides of the top of the mounting plate are installed with unfolding mechanisms, and the outer wall of the connecting block is installed with second connecting rods corresponding to the unfolding mechanisms one by one.

[0009] As a further solution of the utility model, the unfolding mechanism includes a mounting block, and third connecting rods are rotatably provided at both ends of the outer wall of the mounting block, and a foot is fixed at a position of the outer wall of the third connecting rod away from the mounting block.

[0010] As a further solution of the utility model, a mounting groove is provided on the top of the mounting plate at a position corresponding to the mounting block, a second spring is fixed to the outer wall of the mounting block, a fixing ear is fixed to the other end of the second spring, the fixing ear is fixed to the top of the mounting plate, an insertion rod is fixed to the outer wall of the mounting block, and a socket for the insertion rod to pass through is provided on the outer wall of the fixing ear.

[0011] As a further solution of the utility model, one end of the second connecting rod is rotatably arranged on the outer wall of the connecting block, and the other end of the second connecting rod is rotatably connected to the outer wall of the mounting block.

[0012] As a further solution of the utility model, a first connecting rod is rotatably provided on the other side of the connecting block, a push block is rotatably provided on the other end of the first connecting rod, the two push blocks are fixed with the same first spring, and the first connecting rod, push block and first spring are combined to form an opposing unfolding mechanism so that both sides can reach a certain holding force.

[0013] As a further solution of the utility model, a T-shaped slot is provided on the top of the mounting plate, and a T-shaped block adapted to the T-shaped slot is fixed to the bottom of the push block, so that the push block can move stably.

[0014] The beneficial effects of the utility model are:

[0015] The utility model: the unfolding mechanism includes a mounting block, a third connecting rod, a pad, a fixing ear, an insertion rod and a second spring. The mounting plate is fixed at the mounting position by screws, and plays a shock-absorbing role under the action of the damping shock absorber. At the same time, in the process of moving downward, the second connecting rod arranged on the connecting block is rotated to squeeze the mounting block to move. When the mounting block moves, the unfolding mechanism is squeezed to deflect. The four unfolding mechanisms are unfolded at the same time, and the pad contacts the mounting area to increase the supporting area of ​​the mounting plate, effectively reducing the offset force generated by vibration and alleviating the pressure of screw installation. The above-mentioned design has a certain shock-absorbing and protective effect. At the same time, when under pressure, the supporting area can be increased, and the support is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a three-phase combined overvoltage protector proposed by the utility model;

[0017] Figure 2 This is a partial three-dimensional structural diagram of a three-phase combined overvoltage protector proposed by the utility model;

[0018] Figure 3 The utility model provides a three-phase combined overvoltage protector with a partial three-dimensional structure diagram of the deployment mechanism.

[0019] In the figure: 1. Protector body; 2. Base; 3. Mounting plate; 4. Mounting groove; 5. Damping shock absorber; 6. Connecting block; 7. Connecting head; 9. First connecting rod; 10. Push block; 11. First spring; 12. Second connecting rod; 13. Mounting block; 14. Third connecting rod; 15. Foot; 16. Fixing ear; 17. Insert rod; 18. Second spring; 19. Deployment mechanism. DETAILED DESCRIPTION

[0020] 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 of the embodiments.

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] Reference Figure 1-Figure 3 A three-phase combined overvoltage protector comprises a protector body 1, a base 2 and a mounting plate 3, wherein the protector body 1 is provided with three, the protector body 1 is fixed on the top of the base 2, and the base 2 and the mounting plate 3 are connected by a shock absorbing mechanism;

[0023] Two symmetrically arranged damping shock absorbers 5 are fixed on the top of the mounting plate 3, a connecting block 6 is fixed on the top of the damping shock absorber 5, a connecting head 7 is fixed on the top of the connecting block 6, and the connecting head 7 is fixed to the bottom of the base 2;

[0024] Both sides of the top of the mounting plate 3 are installed with unfolding mechanisms 19 , and the outer wall of the connecting block 6 is installed with second connecting rods 12 corresponding to the unfolding mechanisms 19 one by one.

[0025] In this embodiment, the unfolding mechanism 19 includes a mounting block 13 , and third connecting rods 14 are rotatably provided at both ends of the outer wall of the mounting block 13 . A foot 15 is fixed to the outer wall of the third connecting rod 14 away from the mounting block 13 .

[0026] In this embodiment, a mounting groove 4 is provided at the top of the mounting plate 3 at a position corresponding to the mounting block 13, a second spring 18 is fixed to the outer wall of the mounting block 13, a fixing ear 16 is fixed to the other end of the second spring 18, the fixing ear 16 is fixed to the top of the mounting plate 3, an insertion rod 17 is fixed to the outer wall of the mounting block 13, and a socket for the insertion rod 17 to pass through is provided on the outer wall of the fixing ear 16.

[0027] In this embodiment, one end of the second connecting rod 12 is rotatably disposed on the outer wall of the connecting block 6 , and the other end of the second connecting rod 12 is rotatably connected to the outer wall of the mounting block 13 .

[0028] In this embodiment, a first connecting rod 9 is rotatably provided on the other side of the connecting block 6, and a push block 10 is rotatably provided on the other end of the first connecting rod 9. The two push blocks 10 are fixed with the same first spring 11. In combination with the first connecting rod 9, the push block 10 and the first spring 11, an opposing unfolding mechanism 19 is provided so that a certain holding force can be achieved on both sides.

[0029] In this embodiment, a T-shaped slot is provided on the top of the mounting plate 3, and a T-shaped block adapted to the T-shaped slot is fixed to the bottom of the push block 10, so that the push block 10 can move stably.

[0030] Working principle: when in use, the protector body 1, base 2, mounting plate 3, mounting groove 4, damping shock absorber 5, connecting block 6, connecting head 7, second connecting rod 12 and unfolding mechanism 19 are arranged, wherein the unfolding mechanism 19 arranged includes mounting block 13, third connecting rod 14, pad foot 15, fixing ear 16, plug rod 17 and second spring 18, the mounting plate 3 is fixed in the mounting position by screws, when working, when the three-phase combined overvoltage protector vibrates, the base 2 will realize pressure on the damping shock absorber 5, and it will play a shock absorbing role under the action of the damping shock absorber 5, and at the same time, in the process of moving downward, the second connecting rod 12 arranged on the connecting block 6 will squeeze the mounting block 13 to move, and when the mounting block 13 moves, it will squeeze the unfolding mechanism 19 to deflect, and the four unfolding mechanisms 19 will unfold at the same time, and the pad foot 15 will contact the mounting area, increase the support area of ​​the mounting plate 3, effectively reduce the offset force generated by vibration, and relieve the pressure of screw installation. The above design has a certain shock absorption and protection effect, and at the same time, when under pressure, it can increase the support area and make the support more stable.

[0031] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0032] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0034] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A three-phase combined overvoltage protector, comprising a protector body (1), a base (2) and a mounting plate (3), characterized in that: The protector main body (1) is provided with three parts, the protector main body (1) is fixed on the top of the base (2), and the base (2) and the mounting plate (3) are connected via a shock absorbing mechanism; Two symmetrically arranged damping shock absorbers (5) are fixed on the top of the mounting plate (3), a connecting block (6) is fixed on the top of the damping shock absorber (5), a connecting head (7) is fixed on the top of the connecting block (6), and the connecting head (7) is fixed on the bottom of the base (2); Both sides of the top of the mounting plate (3) are installed with unfolding mechanisms (19), and the outer wall of the connecting block (6) is installed with a second connecting rod (12) corresponding to the unfolding mechanisms (19) one by one.

2. A three-phase combined overvoltage protector according to claim 1, characterized in that: The unfolding mechanism (19) comprises a mounting block (13), and third connecting rods (14) are rotatably arranged at both ends of the outer wall of the mounting block (13), and a pad (15) is fixed to the outer wall of the third connecting rod (14) at a position away from the mounting block (13).

3. A three-phase combined overvoltage protector according to claim 2, characterized in that: A mounting groove (4) is provided at the top of the mounting plate (3) at a position corresponding to the mounting block (13); a second spring (18) is fixed to the outer wall of the mounting block (13); a fixing ear (16) is fixed to the other end of the second spring (18); the fixing ear (16) is fixed to the top of the mounting plate (3); an insertion rod (17) is fixed to the outer wall of the mounting block (13); and a plug hole for the insertion rod (17) to pass through is provided on the outer wall of the fixing ear (16).

4. A three-phase combined overvoltage protector according to claim 3, characterized in that: One end of the second connecting rod (12) is rotatably mounted on the outer wall of the connecting block (6), and the other end of the second connecting rod (12) is rotatably connected to the outer wall of the mounting block (13).

5. A three-phase combined overvoltage protector according to claim 4, characterized in that: A first connecting rod (9) is rotatably provided on the other side of the connecting block (6), a pushing block (10) is rotatably provided on the other end of the first connecting rod (9), and the two pushing blocks (10) are fixed with the same first spring (11).

6. A three-phase combined overvoltage protector according to claim 5, characterized in that: A T-shaped sliding groove is provided on the top of the mounting plate (3), and a T-shaped block adapted to the T-shaped sliding groove is fixed on the bottom of the push block (10).

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