A power clamp

Abstract

This invention discloses an electrical pressure plate, relating to the field of power technology. Existing electrical pressure plates pose safety hazards such as accidental contact and misoperation. This invention includes a frame with two sets of terminals embedded within it and two sets of cover plates installed. A lock cylinder is mounted on each cover plate, and an adjusting plate is mounted on the lock cylinder. A moving contact is installed inside a housing, and an adjusting assembly is rotatably connected to the housing and screwed to the frame. The two sets of terminals are electrically connected via the moving contact. The lock cylinder drives the adjusting plate to rotate, blocking the guide hole of the cover plate or limiting the position of the moving contact after insertion. This technical solution physically isolates the terminals through the cover plates to prevent accidental contact; it uses a pluggable moving contact with screw-on fastening, balancing quick operation and stable connection; the lock cylinder and adjusting plate achieve the dual functions of blocking the guide hole and limiting the moving contact, preventing accidental closing and unexpected opening, thus improving the safety and operational flexibility of the electrical pressure plate.

Description

Technical Field

[0001] This invention relates to the field of power technology, and more specifically, to a power pressure plate. Background Technology

[0002] In power systems, the interlocking pressure plate, as a core wiring component, is widely used in protection devices, control circuits, and equipment maintenance. Its structure consists of two terminals spaced apart on the panel of the control cabinet and a rotatable connecting piece. One end of the connecting piece is hinged to the moving terminal, and the other end is locked to the metal stud of the stationary terminal through an opening. By tightening the nut to secure the connecting piece, the power lines connected to the two terminals can be switched on or off, thus completing the line connection / disconnection operation.

[0003] Currently, there are no effective control measures for the operation of protection plates in existing power systems. After the terminals and connecting pieces are disconnected, they are often exposed. During routine maintenance or emergency operations, if the terminals and connecting pieces are abnormally energized, operators are prone to electric shock accidents due to accidental contact with the terminals, posing a significant safety hazard. Furthermore, if no anti-reset measures are taken after the connecting pieces separate from the terminals, equipment vibration, impact, or external collisions can easily cause the connecting pieces to accidentally reset and re-engage, leading to short circuits or equipment damage, affecting the safety of maintenance and other operations. Therefore, we propose a new type of power protection plate. Summary of the Invention

[0004] The purpose of this invention is to provide an electric pressure plate that solves the technical problem that existing electric pressure plates lack protective mechanisms and pose safety hazards.

[0005] This invention provides an electrical pressure plate, including a frame, two sets of terminals embedded in the frame, two sets of cover plates installed on the frame, a lock cylinder installed on the cover plate, and an adjustment plate installed on the lock cylinder; The housing contains a movable contact, and an adjustment assembly is rotatably connected to the housing. The adjustment assembly is screwed to the frame. The two sets of terminals are electrically connected by the insertion of the moving contact. The lock core drives the adjustment plate to rotate, blocking the guide hole of the cover plate or limiting the moving contact after insertion.

[0006] This technical solution utilizes a single rotating mechanism to achieve two different safety functions for the lock cylinder and adjusting plate: 1. Blocking the guide hole: When the moving contact is not inserted or after the circuit is open, the adjusting plate can rotate to the guide hole position, physically blocking the path for unauthorized personnel to accidentally insert the moving contact, thus preventing accidental closing. 2. Limiting the moving contact after insertion: In the closed state, the adjusting plate can rotate to the moving contact position, restricting accidental removal and preventing opening due to vibration or external force. This dual function allows the same lock cylinder-adjusting plate assembly to prevent both accidental closing and accidental opening, eliminating the need for additional locking components and resulting in a compact structure. The two sets of terminals achieve electrical connection through the insertion of the moving contact. Compared to traditional rotating connecting pieces, the insertion and removal operation is more direct and faster, facilitating quick opening and closing in routine maintenance scenarios. Simultaneously, the adjusting assembly is screwed to the frame; after the moving contact is inserted, the threads can be tightened by rotating the adjusting assembly, effectively preventing loosening of the insertion part due to vibration or long-term use, ensuring long-term electrical stability. Two sets of cover plates are installed on the frame, which isolate the terminals and related conductive components from the external environment, preventing operators from directly contacting live terminals or stationary contacts. Compared to traditional pressure plates without cover plates, this solution provides physical protection when the moving contact is not inserted, significantly reducing the risk of electric shock caused by accidental contact with exposed terminals during routine maintenance or repair. The rotation of the regulating plate is controlled by a lock cylinder to meet different safety level requirements. This effectively solves the technical problems of existing power pressure plates in preventing accidental contact, loosening, and misoperation.

[0007] As a further description of the above technical solution, the moving contact is inverted U-shaped and has a slot.

[0008] As a further description of the above technical solution, the skeleton includes a support plate, both ends of which are fixedly connected to support columns. A cavity is opened on the support column, and a cover plate is fastened to the cavity.

[0009] As a further description of the above technical solution, the terminal block includes a conductive plate, one end of which is connected to a screw, and the other end is connected to a stationary contact. The conductive plate and the screw are embedded in the support column, and the stationary contact is located in the cavity.

[0010] As a further description of the above technical solution, the distance between the two ends of the moving contact is matched with the distance between the two sets of stationary contacts.

[0011] As a further description of the above technical solution, a fixing bracket is fixedly connected to the cover plate, and the lock cylinder and the fixing bracket are distributed on both sides of the guide hole.

[0012] As a further description of the above technical solution, a support tube is connected to the support plate, and a copper column is embedded in the support plate; The adjustment assembly includes an adjustment column, which is rotatably connected to the housing. A threaded rod is embedded in the bottom of the adjustment column, and a guide block is installed on the adjustment column, which is sleeved inside the support tube.

[0013] As a further description of the above technical solution, an elastic element is sleeved on the adjusting column, and the elastic element is located inside the support tube and is in an active state.

[0014] As a further description of the above technical solution, a positioning post extends from the bottom of the screw, and at least two nuts are screwed onto each screw.

[0015] Beneficial effects: 1. This invention physically isolates the stationary contacts within the chamber through a cover plate, preventing the risk of accidental contact by operators from the outset. It also features two operating modes: a standard mode and a high-safety mode. In the standard mode, rapid opening and closing can be achieved simply by screwing the threaded rod to the copper post, suitable for routine maintenance. In the high-safety mode, a lock core controls the insertion of the insulating adjustment plate into the moving contact slot to achieve mechanical locking, strictly limiting operating permissions and completely eliminating unauthorized operation, thus meeting the requirements of high-safety power scenarios.

[0016] 2. After the high-security mode of the present invention is tripped, the rotatable adjustment plate blocks the guide hole channel, thus physically blocking the path of unauthorized personnel to accidentally close the circuit breaker; after the moving contact and the stationary contact are separated, the elastic force of the elastic element pushes the housing to drive the moving contact to be misaligned, which effectively avoids the moving contact from accidentally resetting and contacting due to equipment vibration, external force collision, etc., and greatly improves the operational safety during power maintenance.

[0017] 3. When the arc-shaped elastic stationary contact and the moving contact of the present invention are inserted, the moving contact is tightly attached to the surface of the moving contact by its own elasticity, which effectively avoids poor contact caused by vibration and loosening and ensures conductivity stability. The screw of the terminal block is equipped with a double nut and washer design, which not only improves the locking strength and support stability of the external terminal block, but also buffers the pressure on the positioning post when the nut is tightened, reduces component damage, and extends the overall service life. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the skeleton structure of the present invention; Figure 3 This is a cross-sectional view of the present invention; Figure 4 This is a schematic diagram of the terminal block structure of the present invention; Figure 5 This is a schematic diagram of the installation position of the adjustment plate of the present invention; Figure 6 This is a schematic diagram of the moving contact structure of the present invention; Figure 7This is a schematic diagram of the adjustment component structure of the present invention; Figure 8 For the present invention Figure 3 Enlarged view of point A in the middle.

[0019] The following are the labeling instructions in the diagram: 1. Frame; 11. Support plate; 12. Support column; 121. Positioning column; 13. Chamber; 14. Limiting groove; 15. Limiting hole; 16. Extension groove; 17. Support tube; 18. Copper column; 19. Through hole; 110. Bolt; 2. Terminal post; 21. Conductive plate; 22. Screw; 23. Stationary contact; 3. Nut; 4. Cover plate; 41. Guide hole; 42. Limiting column; 43. Buckle; 44. Fixing frame; 5. Lock cylinder; 51. Adjusting plate; 6. Moving contact; 61. Pressure plate; 62. Round hole; 63. Slot; 7. Housing; 8. Adjusting assembly; 81. Adjusting column; 82. Limiting plate; 83. Threaded rod; 84. Guide block; 85. Knob; 9. Elastic element. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Reference Figures 1 to 8 This embodiment provides an electric pressure plate, which includes a frame 1, a support plate 11, and support columns 12 fixedly connected to both ends of the support plate 11. The bottom of the support plate 11 and the bottom of the support column 12 are coplanar. A positioning column 121 is fixedly connected to the bottom of the support column 12. A cavity 13 is opened at the top of the support column 12. A plurality of limiting grooves 14 are opened in the cavity 13. A limiting hole 15 is opened at the bottom of the limiting groove 14. An extension groove 16 is opened on one of the cavities 13. A support tube 17 is fixedly connected to the support plate 11. A copper column 18 is embedded in the support plate 11. The copper column 18 and the support tube 17 are coaxial. A plurality of through holes 19 are opened on the support plate 11. During installation, the positioning post 121 passes through the cabinet door, which can initially position the frame 1 and the through hole 19. At the same time, it can reduce the risk of rotation of the frame 1 during subsequent use. The bottom of the support plate 11 and the support post 12 abuts against the cabinet door. The bolt 110 passes through the through hole 19 and locks the support plate 11 to the cabinet door. Therefore, the initial positioning of the positioning post 121 on the cabinet door can also effectively reduce the installation difficulty of the bolt 110 and improve the installation efficiency of the frame 1.

[0022] Reference Figure 1 , Figure 3 and Figure 4A terminal post 2 is embedded in the support column 12. The terminal post 2 includes a conductive plate 21. One end of the conductive plate 21 is fixedly connected to a screw 22, and the other end is fixedly connected to a stationary contact 23. The conductive plate 21 and part of the screw 22 are embedded in the support column 12. The bottom of the screw 22 protrudes from the positioning post 121. The stationary contact 23 is arc-shaped and arched towards each other. The stationary contact 23 is made of elastic material and is located in the chamber 13. At least two nuts 3 are screwed onto each screw 22 for subsequent wiring fixation. A washer is installed between the nut 3 and the positioning post 121 to reduce damage to the bottom of the positioning post 121 when the nut 3 is tightened, increase the support area and stability of the nut 3, and improve the tightening strength of the nut 3.

[0023] Reference Figure 1 and Figure 5 The power pressure plate also includes two sets of cover plates 4. The top of the cover plate 4 is at the same height as the top of the support tube 17. The cover plate 4 has a guide hole 41 with a chamfer at the opening. Several limiting posts 42 are fixedly connected to the bottom of the cover plate 4. The limiting posts 42 are the same width as the limiting groove 14. The bottom of the limiting posts 42 is fixedly connected to a buckle 43. The buckle 43 is inserted downward from the limiting groove 14 into the chamber 13 and fastened into the limiting hole 15, thereby fixing the cover plate 4 to the opening of the support post 12, effectively isolating the stationary contact 23, avoiding the risk of accidental contact by the operator, and improving the safety of operation.

[0024] A fixing bracket 44 is fixedly connected to the cover plate 4 corresponding to the extension groove 16. A lock cylinder 5 is installed on the cover plate 4 corresponding to the extension groove 16. The lock cylinder 5 is located inside the extension groove 16. An adjusting plate 51 is fixedly installed at the bottom of the lock cylinder 5. The lock cylinder 5 and the fixing bracket 44 are distributed on both sides of the guide hole 41. When a key is inserted into the lock cylinder 5, the adjusting plate 51 can be rotated. When the end of the adjusting plate 51 rotates to the fixing bracket 44, the inside of the guide hole 41 is blocked. At this time, it is impossible to connect the two terminals 2 from the outside of the frame 1. The setting of the fixing bracket 44 can effectively increase the supporting force of the adjusting plate 51 and reduce the risk of bending of the adjusting plate 51 under force.

[0025] Reference Figure 1 , Figure 6 and Figure 8The power pressure plate also includes a moving contact 6, which is inverted U-shaped. The moving contact 6 is fixedly installed in the housing 7 by several pressure plates 61. The moving contact 6 has a round hole 62 and a slot 63. The distance between the two ends of the moving contact 6 is equal to the distance between the two sets of stationary contacts 23. The moving contact 6 can pass through the guide hole 41 and be inserted into the stationary contact 23, thereby realizing the electrical connection between the two terminals 2. Under the squeezing action of the stationary contact 23, it can maintain a stable connection with the moving contact 6, effectively solving the problem of unstable power connection. After the moving contact 6 and the stationary contact 23 are fully engaged, the slot 63 and the adjusting plate 51 are aligned. After the adjusting plate 51 rotates, it can be inserted into the slot 63 of the moving contact 6, limiting the movement of the moving contact 6. The adjusting plate 51 is made of insulating material, achieving both mechanical locking and preventing direct contact with the conductive moving contact 6, thus avoiding the risk of a short circuit. The adjusting plate 51 improves the stability of the connection between the moving contact 6 and the stationary contact 23, preventing unauthorized personnel from operating it improperly. It is particularly suitable for power connection scenarios with high safety requirements. Furthermore, during power maintenance, when the moving contact 6 is disengaged from the stationary contact 23, the adjusting plate 51 can block the entrance to the chamber 13 of the guide hole 41. At this time, the moving contact 6 cannot make a power connection between the two terminals 2 without authorization, preventing accidental escalation of accidents and further improving the safety of maintenance.

[0026] Reference Figure 1 , Figure 7 and Figure 8An adjustment assembly 8 is installed on the housing 7. The adjustment assembly 8 includes an adjustment column 81, which rotates on the housing 7 via a limiting plate 82. The end of the adjustment column 81 extends out of the housing 7 and is fitted with a threaded rod 83. The end of the threaded rod 83 extends out of the adjustment column 81. A guide block 84 is fixedly installed on the adjustment column 81, and the guide block 84 is fitted inside the support tube 17, meaning the outer diameter of the guide block 84 matches the inner diameter of the support tube 17. A knob 85 is fixedly installed on the top of the adjustment column 81. An elastic element 9 is fitted on the adjustment column 81, located inside the support tube 17 and in a movable state. The elastic element 9 pushes the guide block 84, causing it to move the threaded rod 83 towards the copper column 18. During the insertion of the moving contact 6 into the stationary contact 23, the threaded rod 83 moves to the copper column 18. The adjustment column 81 drives the threaded rod 83 to rotate, enabling the threaded rod 83 to be screwed onto the copper column 18, effectively improving the stability of the moving contact 6 and the stationary contact 23 after insertion. Therefore, this power pressure plate can be set with different operating modes according to different levels of importance. For example, in a normal connection, where the safety requirements are generally low, the moving contact 6 and the stationary contact 23 can be locked by simply screwing the threaded rod 83 and the copper pillar 18 together, which facilitates quick maintenance and repair. However, when the safety requirements are high, after screwing the threaded rod 83 and the copper pillar 18 together, the adjusting plate 51 can be inserted into the slot 63 of the moving contact 6 through the lock core 5, so that the moving contact 6 and the stationary contact 23 can be engaged at the level of operation permission restriction, avoiding the problem of unauthorized personnel operating the device. This power pressure plate has flexible application scenarios and a wide range of applications.

[0027] Working principle During the installation of the frame 1, the positioning post 121 at the bottom of the frame 1 is passed through the cabinet door to achieve the initial positioning of the frame 1. This not only prevents the frame 1 from rotating during the subsequent installation process, but also provides a precise reference for the installation of the bolts 110, reducing the difficulty of aligning the bolts 110 with the through hole 19. After the bottom of the support plate 11 and the support post 12 abuts against the cabinet door, the bolts 110 pass through the through hole 19 to lock and fix the frame 1. The pre-positioning function of the positioning post 121 effectively improves the overall installation efficiency. The external wiring terminal is connected to the wiring post 2 through the nut 3.

[0028] Depending on the security requirements, there are two operating modes: In the standard safety mode, suitable for rapid maintenance scenarios, hold the housing 7 and align the moving contact 6 with the guide hole 41 of the cover plate 4. Push the housing 7 to make the moving contact 6 pass through the guide hole 41 and insert into the chamber 13, where it engages with the arc-shaped elastic stationary contact 23. The stationary contact 23 relies on its own elasticity to tightly adhere to the surface of the moving contact 6, ensuring the stability of the conductive contact and avoiding poor contact due to vibration or loosening.

[0029] Rotating the knob 85 on the top of the housing 7 causes the adjusting column 81 to rotate, and the threaded rod 83 inside the adjusting column 81 rotates accordingly and is screwed into the copper column 18 on the support plate 11, further reinforcing the connection between the moving contact 6 and the stationary contact 23 and preventing loosening during use.

[0030] The high-security mode is suitable for scenarios with strict access control. After completing the closing and locking of the threaded rod 83 in the normal mode, a special key is inserted into the lock cylinder 5 and rotated. This rotates the adjusting plate 51 to the slot 63 position of the moving contact 6, where the adjusting plate 51 is inserted into the slot 63 to mechanically lock the moving contact 6. At this time, unauthorized personnel cannot arbitrarily separate the moving contact 6 from the stationary contact 23, making it suitable for power scenarios with extremely high safety requirements.

[0031] Tripping operation: Tripping in high-security mode First, use the special key to rotate the lock cylinder 5 in the reverse direction, so that the adjusting plate 51 exits from the slot 63 of the moving contact 6, thus releasing the locked state; rotate the knob 85 in the reverse direction, so that the threaded rod 83 is disengaged from the copper column 18; pull the housing 7 outward, so that the moving contact 6 and the stationary contact 23 are separated, the circuit is broken, and the elastic element 9 is in a compressed state; continue to rotate the housing 7, so that the moving contact 6 and the support column 12 are misaligned. Under the elastic force of the elastic element 9, the guide block 84 moves towards the copper column 18 side in the support tube 17. The adjusting column 81 drives the housing 7 and the moving contact 6 to move together until the housing 7 abuts against the end of the support tube 17. Through the elastic force of the elastic element 9 and the misaligned placement of the moving contact 6, the accidental reset contact of the moving contact 6 and the stationary contact 23 due to vibration and other factors can be effectively avoided, thus improving the stability of the circuit breaker opening. When the moving contact 6 is separated from the stationary contact 23, the lock core 5 can be rotated again to make the adjusting plate 51 rotate into the guide hole 41, blocking the guide hole 41 channel, preventing unauthorized personnel from accidentally closing the circuit, and greatly improving the safety during power maintenance. Normal mode tripping Simply rotate knob 85 in the opposite direction to disengage threaded rod 83 from copper post 18, then pull housing 7 to separate moving contact 6 from stationary contact 23 to complete the circuit breaker tripping. This operation is convenient and efficient, and suitable for rapid maintenance scenarios.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A power clamp, characterized by: Includes a frame (1), with two sets of terminals (2) embedded in the frame (1), two sets of cover plates (4) installed on the frame (1), a lock cylinder (5) installed on the cover plate (4), and an adjustment plate (51) installed on the lock cylinder (5). The housing (7) has a movable contact (6) installed inside it, and an adjustment component (8) is rotatably connected to the housing (7). The adjustment component (8) is screwed to the frame (1). The two sets of terminals (2) are connected by the moving contact (6). The lock core (5) drives the adjustment plate (51) to rotate, blocking the guide hole (41) of the cover plate (4) or limiting the moving contact (6) after it is connected.

2. The power clamp of claim 1, wherein: The moving contact (6) is inverted U-shaped and has a slot (63) on it.

3. The power pad of claim 1, wherein: The frame (1) includes a support plate (11), and support columns (12) are fixedly connected to both ends of the support plate (11). A cavity (13) is opened on the support column (12), and a cover plate (4) is fastened to the cavity (13).

4. The power pad of claim 3, wherein: The terminal block (2) includes a conductive plate (21), one end of which is connected to a screw (22) and the other end is connected to a stationary contact (23). The conductive plate (21) and the screw (22) are embedded in the support column (12), and the stationary contact (23) is located in the chamber (13).

5. The power pad of claim 4, wherein: The distance between the two ends of the moving contact (6) matches the distance between the two sets of stationary contacts (23).

6. The power pad of any one of claims 1-5, wherein: A fixing bracket (44) is fixedly connected to the cover plate (4), and the lock cylinder (5) and the fixing bracket (44) are distributed on both sides of the guide hole (41).

7. The power pad of claim 3, wherein: A support tube (17) is connected to the support plate (11), and a copper column (18) is embedded in the support plate (11). The adjustment assembly (8) includes an adjustment column (81), which is rotatably connected to the housing (7). A threaded rod (83) is embedded in the bottom of the adjustment column (81), and a guide block (84) is installed on the adjustment column (81). The guide block (84) is sleeved inside the support tube (17).

8. The power pad of claim 7, wherein: An elastic element (9) is fitted on the adjusting column (81), and the elastic element (9) is located inside the support tube (17) and is in an active state.

9. The power pad of claim 4, wherein: The bottom of the screw (22) extends through the positioning post (121), and at least two nuts (3) are screwed onto each screw (22).

Images