Combined overvoltage protector

Abstract

The utility model relates to the technical field of voltage protectors, and provides a combined overvoltage protector, which comprises a mounting plate, a fixing mechanism is arranged on the front surface of the mounting plate, the fixing mechanism comprises a double-output-shaft servo motor fixed on the front surface of the mounting plate, two output ends of the double-output-shaft servo motor are fixedly connected with threaded rods, and the threaded rods are fixedly connected with the mounting plate. The outer surface of each threaded rod is in threaded connection with a threaded ring, a linkage plate is hinged to the outer surface of each threaded ring through a pin shaft, movable plates are hinged to the ends, away from each other, of the two linkage plates through pin shafts, a movable rod is fixedly connected to the front face of each movable plate, and a fixing frame is fixedly connected to the front face of the mounting plate. Two through grooves are formed in the front face of the fixing frame, the front faces of the two movable rods penetrate through the two through grooves and extend to the front face of the fixing frame, and the front face of each movable rod is fixedly connected with a clamping plate. According to the technical scheme, the problem that a voltage protector in the prior art is inconvenient to disassemble and assemble during later maintenance is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of voltage protectors, and in particular to a combined overvoltage protector. Background Art

[0002] The undervoltage protector is a multifunctional monitoring and protection instrument for three-phase three-wire power supply system or three-phase electrical equipment. It integrates three-phase voltage display, overvoltage protection, undervoltage protection, phase loss protection, three-phase voltage imbalance protection, and phase sequence protection. It can be used to monitor important parameters in the three-phase power supply system. It can send out alarm signals in time for abnormal conditions of the three-phase power supply that may endanger the safe and reliable operation of the power supply system and equipment, so that the control system can take appropriate measures before the machine equipment is further damaged, so that the machine equipment and system can be protected to the greatest extent.

[0003] According to the announcement number: CN209929967U, the patent name is: A three-phase combined overvoltage protector. This patent can effectively limit the amplitude of the overvoltage below the insulation tolerance level of the electrical equipment to protect the electrical equipment, realize the relative insulation protection and phase-to-phase insulation protection of the electrical equipment, effectively limit the operating overvoltage and atmospheric overvoltage, and use high-performance zinc oxide varistors. It has the advantages of large current capacity, excellent volt-ampere characteristics, small residual voltage ratio, high tolerance to large current impact, etc. The operating voltage is appropriate to maintain the safe operation of electrical equipment.

[0004] However, the protector is fixed with bolts, which is not convenient for disassembly and installation during maintenance by the staff at a later stage.

[0005] According to the announcement number: CN209994108U, the patent name is: A three-phase combined overvoltage protector. The patented discharge gap component has an automatic arc extinguishing function, has the advantages of safety and reliability, and at the same time improves the safety of the overvoltage protector.

[0006] However, the patent still uses the traditional installation method for the protector, which is fixed with screws, which is not convenient for disassembly and installation during subsequent maintenance and repair. Utility Model Content

[0007] The utility model provides a combined overvoltage protector, which solves the problem in the related art of inconvenience in disassembly and installation during later maintenance and repair.

[0008] The technical solution of the utility model is as follows: a combined overvoltage protector, comprising a mounting plate, a fixing mechanism being provided on the front side of the mounting plate, the fixing mechanism comprising a dual-output shaft servo motor fixed to the front side of the mounting plate, the two output ends of the dual-output shaft servo motor being fixedly connected with threaded rods, the outer surface of each threaded rod being threadedly connected with a screw ring, the outer surface of each screw ring being hinged with a linkage plate through a pin shaft, the ends of the two groups of linkage plates being hinged with movable plates through a pin shaft, the front side of each movable plate being fixedly connected with a movable rod, the front side of the mounting plate being fixedly connected with a fixing frame, the front side of the fixing frame being provided with two groups of through grooves, the front sides of the two groups of movable rods respectively pass through the two groups of through grooves and extend to the front side of the fixing frame, the front side of each group of movable rods being fixedly connected with a clamping plate, and a voltage protector body being provided between the two clamping plates.

[0009] Furthermore, two support plates are fixedly connected to the front of the fixing frame, and sliding grooves are provided on the side surfaces of the two support plates close to each other. Sliding rods are fixedly connected to the left and right side surfaces of the two clamping plates, and the two sets of sliding rods are slidably connected to the two sliding grooves respectively, which can effectively ensure the stability of the two clamping plates during movement and effectively prevent the clamping plates from being deflected and stuck during movement, thereby avoiding affecting the normal disassembly and installation of the protector at a later time.

[0010] Furthermore, the two clamping plates are fixedly connected to a soft pad on one side close to each other, and the two soft pads are provided with anti-slip grooves on one side close to each other. The soft pads themselves have the flexibility to move, which can reduce the clamping force of the clamping plate on the voltage protector body, and effectively avoid damage to the voltage protector body due to excessive clamping force of the clamping plate. At the same time, the soft pad can increase the friction between the clamping plate and the voltage protector body, thereby improving the fixing effect.

[0011] Furthermore, two bearings are fixedly connected to the inner side wall of the fixing frame, and the ends of the two threaded rods away from each other are fixedly connected to the inner rings of the two bearings respectively, which can further fix the two threaded rods, improve the stability of the threaded rods during rotation, and effectively prevent the end of the threaded rod away from the dual-output shaft servo motor from swinging due to centrifugal force, thereby avoiding affecting the normal use of the threaded rods.

[0012] Furthermore, two stabilizing plates are fixedly connected to the outer surface of the dual-output shaft servo motor, and the back side of the stabilizing plate is fixedly connected to the front side of the mounting plate, which can further fix the dual-output shaft servo motor, improve the stability of the dual-output shaft servo motor during operation, and effectively prevent the dual-output shaft servo motor from shaking during operation.

[0013] Furthermore, sockets are provided at the four corners of the front side of the mounting plate, and a non-slip pad is fixedly connected to the back side of the mounting plate. The mounting plate can be installed inside a power distribution cabinet or other box using pins, making the overall installation of the fixing mechanism more convenient and easy to operate.

[0014] Furthermore, an operating nameplate is fixedly connected to the left side of the front of the mounting plate, and instructions for use are engraved on the front of the operating nameplate. The staff can correctly operate the voltage protector by reading the instructions on the operating nameplate, effectively avoiding damage to the voltage protector due to improper operation.

[0015] The working principle and beneficial effects of the utility model are:

[0016] 1. In the utility model, the dual-output shaft servo motor drives two threaded rods to rotate, the two threaded rods drive the two screw rings to move away from each other, the two screw rings drive the two movable plates to move closer to each other through two sets of linkage plates, the two movable plates drive the two clamping plates to move closer to each other through the movable rods, the voltage protector body is installed and fixed, the voltage protector is easy to disassemble and install as a whole, and it is convenient for the staff to repair or maintain the voltage protector later. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] Figure 1 This is a cross-sectional view of the voltage protector body of the utility model;

[0019] Figure 2 This is a cross-sectional view of the clamping plate of the utility model;

[0020] Figure 3 This is a cross-sectional view of the fixing frame of the utility model;

[0021] Figure 4 This is a rear view of the utility model;

[0022] Figure 5 It is a front view of the utility model.

[0023] In the figure: 1. Mounting plate; 2. Fixing mechanism; 201. Through slot; 202. Fixing frame; 203. Clamping plate; 204. Movable rod; 205. Linking plate; 206. Movable plate; 207. Stabilizing plate; 208. Dual-output shaft servo motor; 209. Screw ring; 2010. Bearing; 2011. Threaded rod; 3. Slide slot; 4. Socket; 5. Operation nameplate; 6. Support plate; 7. Slide rod; 8. Soft pad; 9. Voltage protector body; 10. Anti-slip pad. DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1

[0026] like Figure 1 to Figure 5 As shown, this embodiment proposes a combined overvoltage protector, including a mounting plate 1, a fixing mechanism 2 is provided on the front of the mounting plate 1, and the fixing mechanism 2 includes a dual-output shaft servo motor 208 fixed to the front of the mounting plate 1, and the two output ends of the dual-output shaft servo motor 208 are fixedly connected with threaded rods 2011, and the outer surface of each threaded rod 2011 is threadedly connected with a screw ring 209, and the outer surface of each screw ring 209 is hinged with a linkage plate 205 through a pin shaft, and the two sets of linkage plates 205 are connected to each other. The ends away from each other are hinged with movable plates 206 through pins, and the front side of each movable plate 206 is fixedly connected with a movable rod 204. The front side of the mounting plate 1 is fixedly connected with a fixed frame 202. The front side of the fixed frame 202 is provided with two groups of through grooves 201. The front sides of the two groups of movable rods 204 respectively penetrate the two groups of through grooves 201 and extend to the front side of the fixed frame 202. The front side of each group of movable rods 204 is fixedly connected with a clamping plate 203, and a voltage protector body 9 is provided between the two clamping plates 203.

[0027] Reference Figure 1-2 Two support plates 6 are fixedly connected to the front of the fixed frame 202, and a slide groove 3 is provided on the side where the two support plates 6 are close to each other. The left and right sides of the two clamping plates 203 are fixedly connected with sliding rods 7. The two sets of sliding rods 7 are slidably connected to the two slide grooves 3 respectively, which can effectively ensure the stability of the two clamping plates 203 during the movement, and effectively prevent the clamping plates 203 from being deflected and stuck during the movement, thereby avoiding affecting the normal disassembly and installation of the protector in the later stage.

[0028] Reference Figure 1 The two clamping plates 203 are fixedly connected to a soft pad 8 on one side close to each other. The two soft pads 8 are provided with anti-slip grooves on one side close to each other. The soft pads 8 themselves have the flexibility to move, which can reduce the clamping force of the clamping plate 203 on the voltage protector body 9, and effectively avoid damage to the voltage protector body 9 due to excessive clamping force of the clamping plate 203. At the same time, the soft pad 8 can increase the friction between the clamping plate 203 and the voltage protector body 9, thereby improving the fixing effect.

[0029] Example 2

[0030] like Figure 3 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment further proposes that the inner wall of the fixing frame 202 is fixedly connected with two bearings 2010, and the ends of the two threaded rods 2011 away from each other are fixedly connected to the inner rings of the two bearings 2010, respectively, which can further fix the two threaded rods 2011, improve the stability of the threaded rods 2011 during rotation, and effectively prevent the end of the threaded rod 2011 away from the dual-output shaft servo motor 208 from swinging due to centrifugal force, thereby avoiding affecting the normal use of the threaded rod 2011.

[0031] Reference Figure 3 Two stabilizing plates 207 are fixedly connected to the outer surface of the dual-output shaft servo motor 208, and the back of the stabilizing plate 207 is fixedly connected to the front of the mounting plate 1, which can further fix the dual-output shaft servo motor 208, improve the stability of the dual-output shaft servo motor 208 during operation, and effectively prevent the dual-output shaft servo motor 208 from shaking during operation.

[0032] Reference Figure 1 to Figure 5 , sockets 4 are provided at the four corners of the front side of the mounting plate 1, and a non-slip pad 10 is fixedly connected to the back side of the mounting plate 1. The mounting plate 1 can be installed inside a power distribution cabinet or other box by means of nails, making the overall installation of the fixing mechanism 2 more convenient and easy to operate.

[0033] Reference Figure 1 to Figure 3 An operation nameplate 5 is fixedly connected to the left side of the front of the mounting plate 1, and instructions for use are engraved on the front of the operation nameplate 5. The staff can correctly operate the voltage protector by reading the instructions for use on the operation nameplate 5, effectively avoiding damage to the voltage protector due to improper operation.

[0034] During installation, first place the voltage protector body 9 between the two clamping plates 203, and the dual-output shaft servo motor 208 drives the two threaded rods 2011 to rotate, and the two threaded rods 2011 drive the two screw rings 209 to move away from each other, and the two screw rings 209 drive the two movable plates 206 to move closer to each other through two sets of linkage plates 205, and the two movable plates 206 drive the two clamping plates 203 to move closer to each other through the movable rod 204, and the voltage protector body 9 is installed and fixed. During disassembly, it is only necessary to drive the two threaded rods 2011 to reverse by the dual-output shaft servo motor 208, so that the two screw rings 209 push the two movable plates 206 to move away from each other through the linkage plate 205, and the movable plates 206 drive the two clamping plates 203 to move away from each other through the movable rod 204, and the fixation of the voltage protector body 9 is released, and the staff can remove the voltage protector body 9.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A combined overvoltage protector, characterized in that: The invention comprises a mounting plate (1), wherein a fixing mechanism (2) is provided on the front of the mounting plate (1), wherein the fixing mechanism (2) comprises a dual-output shaft servo motor (208) fixed to the front of the mounting plate (1), wherein both output ends of the dual-output shaft servo motor (208) are fixedly connected to threaded rods (211), wherein the outer surface of each threaded rod (211) is threadedly connected to a screw ring (209), wherein the outer surface of each screw ring (209) is hinged to a linkage plate (205) via a pin, and the ends of the two sets of linkage plates (205) that are away from each other are hinged via a pin. A movable plate (206) is hingedly connected, and the front face of each movable plate (206) is fixedly connected to a movable rod (204). The front face of the mounting plate (1) is fixedly connected to a fixed frame (202). The front face of the fixed frame (202) is provided with two groups of through slots (201). The front faces of the two groups of movable rods (204) respectively penetrate the two groups of through slots (201) and extend to the front face of the fixed frame (202). The front face of each group of movable rods (204) is fixedly connected to a clamping plate (203), and a voltage protector body (9) is provided between the two clamping plates (203).

2. A combined overvoltage protector according to claim 1, characterized in that: The front side of the fixed frame (202) is fixedly connected to two support plates (6), and a sliding groove (3) is provided on the side of the two support plates (6) close to each other. The left and right side surfaces of the two clamping plates (203) are fixedly connected to sliding rods (7), and the two groups of sliding rods (7) are slidably connected to the two sliding grooves (3) respectively.

3. A combined overvoltage protector according to claim 1, characterized in that: The sides of the two clamping plates (203) that are close to each other are both fixedly connected to a soft pad (8), and the sides of the two soft pads (8) that are close to each other are both provided with anti-slip grooves.

4. A combined overvoltage protector according to claim 1, characterized in that: Two bearings (2010) are fixedly connected to the inner side wall of the fixing frame (202), and ends of the two threaded rods (2011) that are away from each other are fixedly connected to the inner rings of the two bearings (2010) respectively.

5. The combined overvoltage protector according to claim 1, characterized in that: Two stabilizing plates (207) are fixedly connected to the outer surface of the dual-output shaft servo motor (208), and the back surface of the stabilizing plate (207) is fixedly connected to the front surface of the mounting plate (1).

6. A combined overvoltage protector according to claim 1, characterized in that: Plug holes (4) are provided at the four corners of the front side of the mounting plate (1), and an anti-slip pad (10) is fixedly connected to the back side of the mounting plate (1).

7. A combined overvoltage protector according to claim 1, characterized in that: An operation nameplate (5) is fixedly connected to the left side of the front side of the mounting plate (1), and instructions for use are engraved on the front side of the operation nameplate (5).

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