A false touch prevention device for a relay protection press plate

Abstract

The utility model relates to a kind of anti-misoperation devices for relay protection pressboard in the technical field of relay protection, including bottom plate and pressboard connecting piece, first pressboard pole and second pressboard pole are equipped with in the interval on the bottom plate upper surface, the pressboard connecting piece one end is hinged in first pressboard pole, the other end is rotatably contacted or separated with second pressboard pole, further including anti-misoperation component, the anti-misoperation component includes: push-pull column, it is slidably connected in the length direction on the top surface of pressboard connecting piece;Top plate, it is intervally arranged above pressboard connecting piece, and the section of its deviating to second pressboard pole is opened with let go slot along width direction;The let go slot both ends are equipped with the clamping groove towards first pressboard pole or second pressboard pole;The utility model is driven by push-pull column with clamping groove's top plate and tension spring, constitutes a stable locking mechanism, prevent the misoperation of pressboard connecting piece due to accidental touch and other reasons, greatly improve the security and reliability of operation.

Description

Technical Field

[0001] This utility model relates to the field of relay protection technology, and in particular to an anti-accidental contact device for a relay protection pressure plate. Background Technology

[0002] Relay protection is an important technical measure in power systems used to detect faults or abnormal operating conditions and issue alarm signals or directly control circuit breakers to isolate and disconnect faulty components. The protection plate (or connecting plate, trip plate) is a key component connecting the relay protection device to external circuits. Its normal operation directly affects whether the protection function is engaged and the integrity of the action output circuit, which is crucial for the safe and stable operation of the power system.

[0003] To ensure the reliable operation of relay protection equipment, maintenance personnel need to conduct regular or temporary inspections and adjustments. During this process, to prevent accidental contact between the pressure plate connecting piece and the pressure plate terminal, which could lead to malfunctions of the protection system or electric shocks, reliable isolation measures must be taken between the pressure plate connecting piece and the pressure plate terminal on the inspection equipment.

[0004] Currently, the most common isolation method is to wrap the pressure plate connecting piece with insulating tape to insulate it from the live pressure plate terminal. However, this method has obvious drawbacks: First, wrapping and removing the insulating tape is cumbersome, time-consuming, and labor-intensive, reducing work efficiency; second, insulating tape is mostly for single use, easily leaving adhesive residue, and has poor reusability, which not only increases maintenance costs but also generates unnecessary waste.

[0005] To address the aforementioned issues, some improvements have emerged in the prior art. For example, Chinese patent application CN117559162A discloses a relay protection pressure plate, which incorporates an anti-accidental contact assembly including a fixing element and an elastic element. By pushing the push-pull post on the pressure plate connecting piece into the recessed groove of the fixing element's top plate, the pressure plate connecting piece can be deployed or retracted, and the elastic element's tension allows it to be stored in the retracted position. This solution eliminates the need for wrapping adhesive tape. However, this solution relies primarily on the continuous tension of the elastic element to maintain the retracted state, which has a significant drawback: when the device is subjected to unexpected external force, the push-pull post may overcome the tension of the elastic element and slide in the recessed groove, causing the pressure plate connecting piece to rotate unexpectedly and contact the electrode post, still posing a safety hazard of accidental connection.

[0006] To address this, we designed an anti-accidental-touch device for relay protection pressure plates. Utility Model Content

[0007] In order to overcome the shortcomings of the prior art, this utility model discloses an anti-accidental contact device for a relay protection pressure plate.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] An anti-accidental contact device for a relay protection pressure plate includes a base plate and a pressure plate connecting piece. A first pressure plate pole and a second pressure plate pole are spaced apart on the upper surface of the base plate. One end of the pressure plate connecting piece is hinged to the first pressure plate pole, and the other end is rotatably in contact with or separate from the second pressure plate pole. The device also includes an anti-accidental contact component, which comprises:

[0010] A push-pull column is slidably connected to the top surface of the pressure plate connecting piece along its length;

[0011] The top plate is spaced above the pressure plate connecting piece, and a relief groove is provided along the width direction on the section of the plate that is biased towards the second pressure plate pole; both ends of the relief groove are provided with locking grooves facing the first pressure plate pole or the second pressure plate pole.

[0012] A tension spring, one end of which is connected to the push-pull column and the other end of which is connected to the top plate, has its length gradually increasing as the push-pull column moves from the middle of the relief groove to both ends, and provides elastic tension for the push-pull column located at both ends of the relief groove to engage with the corresponding positioning groove.

[0013] Furthermore, the pressure plate connecting piece is fitted with a fixed insulating sleeve, and the top surface of the fixed insulating sleeve is provided with a sliding groove along the length direction of the pressure plate connecting piece, and a slider is slidably connected to the sliding groove; the lower end of the push-pull column is installed on the slider.

[0014] Furthermore, the push-pull column body is provided with annular grooves or radial through holes for attaching tension springs.

[0015] Furthermore, the top plate is provided with a vertical through hole for attaching a tension spring.

[0016] Furthermore, the vertical through hole is a threaded hole and is screwed with a stud for attaching a tension spring.

[0017] Furthermore, the end of the locking groove away from the relief groove is provided with a tapered cavity;

[0018] The push-pull column is an elastic telescopic column with a tapered section at the top, which is used to engage with the tapered cavity of the locking groove to achieve position locking.

[0019] Furthermore, the push-pull column includes:

[0020] Fixed cylinder;

[0021] The piston rod is axially and movably connected to the inner wall of the fixed cylinder at its lower end.

[0022] A compression spring is disposed in the inner cavity of the fixed cylinder and located above the piston plate of the piston rod;

[0023] The push-pull head is coaxially mounted on the upper end of the piston rod.

[0024] Furthermore, the pressure plate connecting piece is provided with a insertion / retraction slot, and a C-shaped elastic copper sheet is provided inside the insertion / retraction slot for holding the second pressure plate pole.

[0025] Furthermore, both ends of the top plate are provided with circular grooves for the first pressure plate pole and the second pressure plate pole to pass through, respectively.

[0026] Furthermore, the top plate has a downward-facing folded edge along its outer edge to support it.

[0027] Compared with the prior art, the beneficial effects of this utility model are:

[0028] 1. By setting a top plate with a locking groove and a push-pull column driven by a tension spring, a stable locking mechanism is formed. Under the tension of the tension spring, the push-pull column can only stay stably in the locking groove of the "engaged" or "unengaged" position, thereby preventing the pressure plate connecting piece from moving accidentally due to accidental contact, and greatly improving the safety and reliability of operation.

[0029] 2. The entire anti-accidental touch assembly is fixed to the pressure plate pole via the top plate, resulting in a compact and stable structure. The interlocking of the elastic telescopic push-pull column and the conical locking groove creates a mechanical interlock, further enhancing locking strength and anti-interference capabilities. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of this utility model;

[0031] Figure 2 This is a top view of the present invention;

[0032] Figure 3 for Figure 2 AA section view in the middle;

[0033] Figure 4 This is a schematic diagram of the mating structure between the pressure plate connecting piece and the base plate in this utility model;

[0034] Figure 5 This is a schematic diagram of the top plate in this utility model.

[0035] In the diagram: 1. Base plate; 2. First pressure plate pole; 3. Second pressure plate pole; 4. Pressure plate connecting piece; 41. Engagement / retraction slot; 42. C-shaped elastic copper sheet; 5. Anti-accidental contact component; 51. Push-pull column; 5101. Conical section; 511. Fixing cylinder; 512. Piston rod; 513. Compression spring; 514. Push-pull head; 52. Top plate; 521. Relief groove; 522. Locking groove; 523. Circular groove; 524. Folded edge; 53. Tension spring; 54. Stud; 6. Fixing insulating sleeve; 61. Slide groove; 62. Slider. Detailed Implementation

[0036] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if terms such as "upper", "lower", "front", "rear", "left", "right" indicate orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention. It should be understood that if terms such as "end", "side", "end portion", "side part", "lateral", "longitudinal", etc. indicate orientation or positional relationship, they are only corresponding to the length and width of the corresponding component. That is, "end" indicates the head and tail area in the length direction of the corresponding component, and "side part" indicates the head and tail area in the width direction of the corresponding component. They are used for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation.

[0037] Example 1, in conjunction with Appendix Figure 1-5 An anti-accidental contact device for a relay protection pressure plate includes a base plate 1, a first pressure plate pole 2, a second pressure plate pole 3, a pressure plate connecting piece 4, and an anti-accidental contact component 5.

[0038] The base plate 1 is preferably made of insulating material to ensure electrical safety. A first pressure plate pole 2 is fixedly installed at one end of the upper surface of the base plate 1, and a second pressure plate pole 3 is fixedly installed at the other end, which serve as the connection point for the current path.

[0039] The pressure plate connecting piece 4 is made of a highly conductive metal material (such as copper). One end of the piece has a hole and is hinged to the first pressure plate pole 2 via a connecting sleeve, allowing it to rotate around the hinge point. The other end of the pressure plate connecting piece 4 has a locking / unlocking groove 41, in which a C-shaped elastic copper sheet 42 is embedded. When the pressure plate connecting piece 4 rotates until its free end contacts the second pressure plate pole 3, the C-shaped elastic copper sheet 42 elastically grips the second pressure plate pole 3, thereby achieving a reliable electrical connection.

[0040] The anti-accidental touch component 5 includes a top plate 52, a push-pull column 51, and a tension spring 53.

[0041] The top plate 52 is made of insulation, and the circular grooves 523 at both ends are fitted onto the first pressure plate pole 2 and the second pressure plate pole 3, thereby being fixed above the bottom plate 1 and maintaining a certain distance from the pressure plate connecting piece 4 below.

[0042] Combined with appendix Figure 2The top plate 52 has a long, arc-shaped clearance groove 521 at one end, biased towards the second pressure plate pole 3. Each end of the clearance groove 521 has a retaining groove 522, and the opening directions of these two retaining grooves 522 are the same, forming a U-shape. Both retaining grooves 522 face either the first pressure plate pole 2 or the second pressure plate pole 3. In this embodiment, the grooves facing the first pressure plate pole 2 are taken as an example.

[0043] The lower end of the push-pull column 51 is connected to the top surface of the pressure plate connecting piece 4 through a sliding mechanism.

[0044] Specifically, a fixed insulating sleeve 6 is fitted onto the pressure plate connecting piece 4. The top surface of the fixed insulating sleeve 6 has a groove 61 along the length of the pressure plate connecting piece 4. The slider 62 is embedded in the groove 61 and can slide along it. The lower end of the push-pull column 51 is fixedly installed on this slider 62. The upper part of the push-pull column 51 passes through the relief groove 521 of the top plate 52 and protrudes above the top plate 52 for easy operation.

[0045] One end of the tension spring 53 is hung on the annular groove or radial through hole provided on the push-pull column 51, and the other end is hung on the top plate 52.

[0046] In this embodiment, the top plate 52 is provided with a vertical through hole, and the hook of the tension spring 53 is attached to the through hole.

[0047] In another embodiment, the top plate 52 is provided with a vertical threaded hole, and the stud 54 is screwed into the threaded hole, so that the hook at the end of the tension spring 53 is attached to the stud 54.

[0048] Furthermore, the tension spring 53 is always in a stretched state, and its installation position ensures that it always provides an elastic tension to the push-pull post 51 located at the end of the relief groove 521, tending to cause the push-pull post 51 to engage with any of the retaining grooves 522.

[0049] Preferably, the stud 54 is located on the vertical line of the relief groove 521. That is, when the push-pull post 51 is located in the middle of the relief groove 521, the length of the tension spring 53 is the smallest, and when the push-pull post 51 is located at both ends of the relief groove 521, the length of the tension spring 53 is the largest.

[0050] Its working principle is as follows:

[0051] Operation: The operator pushes the push-pull column 51, moving it from the locking groove 522 into the relief groove 521, and then moves it along the relief groove 521 towards the end near the second pressure plate pole 3 to its limit position, causing the C-shaped elastic copper sheet 42 on the pressure plate connecting piece 4 to grip the second pressure plate pole 3. Then, under the pulling force of the tension spring 53, the push-pull column 51 is quickly pulled into and locked into the corresponding locking groove 522, achieving stable locking of the position and effectively preventing accidental disconnection due to vibration or accidental contact.

[0052] Exit Operation: The operator applies a force sufficient to overcome the tension of the tension spring 53, pulls the push-pull column 51 out of the engagement slot 522 and into the clearance slot 521, and then slides it along the clearance slot 521 away from the second pressure plate pole 3 until the limit position. At this time, the tension of the tension spring 53 will pull it in and lock it into the corresponding slot 522, keeping it stably in the off state, effectively preventing accidental contact that could lead to unexpected connection.

[0053] Example 2, in conjunction with Appendix Figure 3 An anti-accidental contact device for a relay protection pressure plate is proposed. Based on the first embodiment, the locking structure of the push-pull column 51 and the locking groove 522 is enhanced to further improve the reliability of locking.

[0054] In this embodiment, the push-pull column 51 adopts an elastic telescopic structure, which includes a fixed cylinder 511, a piston rod 512, a compression spring 513, and a push-pull head 514.

[0055] The lower end of the fixed cylinder 511 is fixedly connected to the slider 62. The lower end of the piston rod 512 extends into the inner cavity of the fixed cylinder 511 and can move axially. The compression spring 513 is disposed in the inner cavity of the fixed cylinder 511 and is located above the piston plate of the piston rod 512, and always applies a downward thrust to the piston rod 512.

[0056] The push-pull head 514 is cylindrical, with a tapered section 5101 machined at its bottom.

[0057] Correspondingly, the top end of the locking groove 522 on the top plate 52, which is away from the relief groove 521, is also machined with a matching conical cavity.

[0058] In this embodiment, the push-pull head 514 is provided with an annular groove or a radial through hole for the tension spring 53 to be attached.

[0059] When the push-pull head 514 of the push-pull column 51 slides above the conical cavity of the locking groove 522, under the elastic force of the compression spring 513, the conical section 5101 of the push-pull head 514 is pushed downward into the conical cavity, forming a tight mechanical interlock. This greatly enhances the reliability of the locking and can effectively resist greater accidental pulling force or severe vibration. However, when it is necessary to move the push-pull column 51, the push-pull head 514 must first be lifted upward (opposite to the direction of the force of accidental contact) to overcome the elastic force of the compression spring 513 and allow its conical section 5101 to exit the conical cavity before sliding can be performed. This double safety measure further eliminates misoperation.

[0060] Example 3, in conjunction with Appendix Figure 3 An anti-accidental contact device for a relay protection pressure plate is provided. In this embodiment, the structure of the top plate 52 is strengthened based on embodiment one or two.

[0061] In this embodiment, a downward-facing folded edge 524 is added to the outer edge of the top plate 52. This folded edge 524 not only significantly increases the structural strength and rigidity of the top plate 52 itself, but more importantly, when the top plate 52 is installed onto the pressure plate pole through the circular groove 523, the bottom end of the folded edge 524 can contact the upper surface of the bottom plate 1, thereby providing additional, evenly distributed support for the top plate 52 and improving the mechanical stability of the entire device.

[0062] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims in this utility model, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. A device for preventing accidental contact of a relay protection pressure plate, comprising a base plate (1) and a pressure plate connecting piece (4), wherein a first pressure plate pole (2) and a second pressure plate pole (3) are spaced apart on the upper surface of the base plate (1), and one end of the pressure plate connecting piece (4) is hinged to the first pressure plate pole (2), and the other end is rotatably in contact with or separate from the second pressure plate pole (3), characterized in that: It also includes an anti-accidental touch component (5), which includes: The push-pull column (51) is slidably connected to the top surface of the pressure plate connecting piece (4) along the length direction; The top plate (52) is spaced above the pressure plate connecting piece (4), and a relief groove (521) is provided along the width direction on a section of it that is biased toward the second pressure plate pole (3); both ends of the relief groove (521) are provided with a locking groove (522) facing the first pressure plate pole (2) or the second pressure plate pole (3). A tension spring (53) is connected at one end to the push-pull column (51) and at the other end to the top plate (52). Its length gradually increases as the push-pull column (51) moves from the middle of the relief groove (521) to both ends, and provides elastic tension for the push-pull column (51) located at both ends of the relief groove (521) to be inserted into the corresponding locking groove (522).

2. The anti-accidental contact device for a relay protection pressure plate according to claim 1, characterized in that: The pressure plate connecting piece (4) is fitted with a fixed insulating sleeve (6), and the top surface of the fixed insulating sleeve (6) is provided with a sliding groove (61) along the length direction of the pressure plate connecting piece (4), and the sliding groove (61) is slidably connected to a slider (62); the lower end of the push-pull column (51) is installed on the slider (62).

3. The anti-accidental contact device for a relay protection pressure plate according to claim 1, characterized in that: The push-pull column (51) has an annular groove or radial through hole for attaching a tension spring (53).

4. The anti-accidental contact device for a relay protection pressure plate according to claim 1, characterized in that: The top plate (52) is provided with a vertical through hole for attaching a tension spring (53).

5. The anti-accidental contact device for a relay protection pressure plate according to claim 4, characterized in that: The vertical through hole is a threaded hole and is screwed with a stud (54) for attaching a tension spring (53).

6. The anti-accidental contact device for a relay protection pressure plate according to claim 1, characterized in that: The end of the locking groove (522) away from the relief groove (521) is provided with a conical cavity; The push-pull column (51) is an elastic telescopic column with a tapered section (5101) at the top, which is used to cooperate with the tapered cavity of the locking groove (522) to achieve position locking.

7. The anti-accidental contact device for a relay protection pressure plate according to claim 6, characterized in that: The push-pull column (51) includes: Fixed tube (511); The lower end of the piston rod (512) is axially connected to the inner wall of the fixed cylinder (511); A compression spring (513) is provided in the inner cavity of the fixed cylinder (511) and is located above the piston plate of the piston rod (512); The push-pull head (514) is coaxially located at the upper end of the piston rod (512).

8. The anti-accidental contact device for a relay protection pressure plate according to claim 1, characterized in that: The pressure plate connecting piece (4) has a loading and unloading slot (41), and a C-shaped elastic copper sheet (42) is provided inside the loading and unloading slot (41) for holding the second pressure plate pole (3).

9. The anti-accidental contact device for a relay protection pressure plate according to claim 1, characterized in that: Both ends of the top plate (52) are provided with circular grooves (523) for the first pressure plate pole (2) and the second pressure plate pole (3) to pass through respectively.

10. The anti-accidental contact device for a relay protection pressure plate according to claim 9, characterized in that: The top plate (52) has a downward folded edge (524) on its outer edge for supporting the top plate (52).

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