A protective pressure plate

Abstract

The present invention discloses a protective pressure plate, which is used to solve the technical problem that the prior art cannot monitor whether the protective pressure plate is in place. The first terminal and the second terminal in the present invention are fixedly installed on the base; the first end of the connecting piece is sleeved on the first terminal, and the top of the first terminal is threadedly connected with a first clamping screw; the second end of the connecting piece is provided with a connecting part, which is detachably connected to the second terminal, and the top of the second terminal is threadedly connected with a second clamping screw; the middle part of the bottom surface of the connecting piece is connected with a connecting rod, and the connecting rod and the connecting piece are perpendicular to each other. The base is provided with a slot for the connecting rod to enter and move, and the bottom of the slot is connected with an accommodating cavity, and the accommodating cavity is installed with a moving contact and a static contact, and the static contact is located below the moving contact, and the moving contact is fixedly connected with a platform pillar, and a spring is sleeved on the platform pillar, and the spring is connected to the base, and the moving contact and the static contact are both electrically connected to the monitoring device.

Description

Technical Field

[0001] The invention relates to the technical field of protective pressing plates, and in particular to a protective pressing plate. Background Art

[0002] The protection pressure plate in the power system is also called the protection link. It is connected in series in the control circuit of the relay protection device to form a disconnectable point, which is used to connect or disconnect the control circuit of the relay protection device. It is a bridge and link for the protection device to connect to the external wiring. It is an important device in the secondary protection of the power system. It is related to whether the opening and closing commands of the relay protection device can be correctly transmitted to the opening and closing coils. It is also a key device for it to execute the corresponding opening and closing commands. In the field of automatic control and power electronics, the protection pressure plate is widely used in relay protection panels and control cabinets, playing the function of cutting off or converting circuits, playing a protective role in the circuit, and cooperating to complete the testing and maintenance of the circuits in the protection panel or control cabinet.

[0003] The protection pressure plate is manually activated and deactivated. Whether it is activated or deactivated, whether it is activated properly, and whether it is deactivated completely all play a vital role in the safe operation of the relay protection system.

[0004] Since the protection pressure plates in the switch station and the distribution room do not have working status monitoring devices, when the power equipment is put into operation, the staff needs to inspect to determine whether the protection pressure plates at the power equipment outlets are working normally. Generally, the staff directly observes whether the pressure plates are put into operation by visual means. This method makes it difficult to find abnormal situations such as the protection pressure plates are not actually connected or the secondary wiring on the back of the protection pressure plates is detached or loose, resulting in the control circuits at both ends of the protection pressure plates not actually conducting. In the event of a fault, the protection pressure plates may not actually conduct, resulting in over-tripping, thereby expanding the scope of the accident.

[0005] Therefore, in order to solve the above technical problems, finding a new type of protective pressure plate that can monitor whether the protective pressure plate is in place has become an important topic studied by technical personnel in this field. Summary of the invention

[0006] The embodiment of the invention discloses a protective pressing plate, which is used to solve the technical problem in the prior art that it is impossible to monitor whether the protective pressing plate is in place.

[0007] The embodiment of the present invention provides a protective pressure plate, including a first terminal, a second terminal, a connecting piece, a base and a monitoring device;

[0008] The first binding post and the second binding post are fixedly mounted on the base at a preset distance;

[0009] The first end of the connecting piece is sleeved on the first terminal, the connecting piece can be driven to rotate around the first terminal, and the top end of the first terminal is threadedly connected with a first clamping screw for clamping the first end of the connecting piece;

[0010] The second end of the connecting piece is provided with a connecting portion, the connecting portion is detachably connected to the second terminal, and the top end of the second terminal is threadedly connected with a second clamping screw for clamping the connecting portion of the connecting piece;

[0011] A connecting rod is connected to the middle part of the bottom surface of the connecting piece, and the connecting rod and the connecting piece are perpendicular to each other. A slot for the connecting rod to enter and move is opened on the base, and the bottom of the slot is connected to a receiving cavity, and a moving contact and a static contact are installed in the receiving cavity. The static contact is located below the moving contact, and a platform pillar is fixedly connected to the moving contact, and a spring is mounted on the platform pillar, and the spring is fixedly connected to the base;

[0012] The moving contact and the stationary contact are both electrically connected to the monitoring device;

[0013] The connecting portion of the connecting piece is connected to the second terminal, and the first clamping screw tightens the first end of the clamping piece. When the second clamping screw tightens the connecting portion of the clamping piece, the connecting rod is pressed downward, causing the moving contact to move downward and connect with the static contact.

[0014] Optionally, an operating handle is fixedly mounted on the connecting piece, and the operating handle is fixed to the middle part of the top surface of the connecting piece.

[0015] Optionally, the slot is an arc-shaped slot.

[0016] Optionally, the platform support column comprises a hat-shaped platform and a support column body;

[0017] The top surface of the hat-shaped platform is a curved surface, the bottom surface of the hat-shaped platform is a flat surface, and the top end of the support body is fixedly installed at the center of the bottom surface of the hat-shaped platform.

[0018] Optionally, the spring is sleeved on the support body, and the spring is fixedly connected to the base.

[0019] Optionally, the bottom of the first terminal and the bottom of the second terminal both pass through the base;

[0020] The bottom of the first binding post and the bottom of the second binding post are both connected to two binding screws and a connecting wire, and the connecting wire is located between the two binding screws.

[0021] Optionally, the connecting portion is a semicircular notch;

[0022] The diameter of the semicircular notch matches the diameter of the second terminal.

[0023] It can be seen from the above technical solutions that the embodiments of the present invention have the following advantages:

[0024] The embodiment of the present invention provides a protective pressure plate, comprising a first terminal, a second terminal, a connecting piece, a base and a monitoring device; the first terminal and the second terminal are fixedly installed on the base at a preset distance; the first end of the connecting piece is sleeved on the first terminal, the connecting piece can be driven to rotate around the first terminal, the top end of the first terminal is threadedly connected with a first clamping screw for clamping the first end of the connecting piece; the second end of the connecting piece is provided with a connecting part, the connecting part is detachably connected to the second terminal, the top end of the second terminal is threadedly connected with a second clamping screw for clamping the connecting part of the connecting piece; the middle part of the bottom surface of the connecting piece is connected with a connecting rod, the The connecting rod and the connecting piece are perpendicular to each other, and a groove for the connecting rod to enter and move is provided on the base. The bottom of the groove is connected to a receiving cavity, and a moving contact and a static contact are installed in the receiving cavity. The static contact is located below the moving contact, and a platform pillar is fixedly connected to the moving contact. A spring is mounted on the platform pillar, and the spring is fixedly connected to the base; the moving contact and the static contact are both electrically connected to the monitoring device; the connecting part of the connecting piece is connected to the second terminal, and the first clamping screw tightens the first end of the clamping piece, and when the second clamping screw tightens the connecting part of the clamping piece, the connecting rod is pressed to move downward, so that the moving contact moves downward and is connected with the static contact. Through the above design, only when the connecting part of the connecting piece is connected to the second terminal, the first clamping screw clamps the first end of the connecting piece, and the second clamping screw clamps the connecting part, the connecting rod will be pressed downward toward the platform support, causing the moving contact to move downward and connect with the static contact, thereby enabling the monitoring device to operate to send a signal of being in place. The staff only needs to judge whether the protection pressure plate is in place based on the signal of being in place, thereby avoiding the judgment errors caused by the staff's naked eye observation and improving the safety of the power grid operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 A schematic cross-sectional view of a protective pressure plate provided in an embodiment of the present invention;

[0027] Figure 2 A top view of the structure of a protective pressure plate provided in an embodiment of the present invention;

[0028] Figure 3 A schematic diagram of a protective pressing plate provided in an embodiment of the present invention when both the first clamping screw and the second clamping screw are not tightened;

[0029] Figure 4 A schematic diagram of a protective pressing plate provided in an embodiment of the present invention when a first clamping screw and a second clamping screw are both tightened;

[0030] Figure 5 A schematic diagram of a protective pressing plate provided in an embodiment of the present invention when a first clamping screw is not tightened and a second clamping screw is tightened;

[0031] Figure 6 A circuit diagram of a circuit formed by a moving contact, a stationary contact and a monitoring device in a protection pressure plate provided in an embodiment of the present invention;

[0032] Illustration: base 1; first terminal 2; second terminal 3; first clamping screw 4; second clamping screw 5; connecting piece 6; operating handle 7; connecting rod 8; platform support 9; spring 10; moving contact 11; static contact 12; terminal screw 13; connecting wire 14; monitoring device 15;

[0033] Connection part 602. DETAILED DESCRIPTION

[0034] The embodiment of the invention discloses a protective pressing plate, which is used to solve the technical problem in the prior art that it is impossible to monitor whether the protective pressing plate is in place.

[0035] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] See also Figures 1 to 5 , a protective pressure plate provided in an embodiment of the present invention includes:

[0037] A first terminal 2, a second terminal 3, a connecting piece 6, a base 1, and a monitoring device 15 for sending a signal that the device is in place;

[0038] The first binding post 2 and the second binding post 3 are fixedly mounted on the base 1 at a preset distance;

[0039] The first end of the connecting piece 6 is sleeved on the first terminal 2, and the connecting piece 6 can be driven to rotate around the first terminal 2. The top end of the first terminal 2 is threadedly connected with a first clamping screw 4 for clamping the first end of the connecting piece 6.

[0040] The second end of the connecting piece 6 is provided with a connecting portion 602, and the connecting portion 602 is detachably connected to the second terminal 3. The top end of the second terminal 3 is threadedly connected with a second clamping screw 5 for clamping the connecting portion 602 of the connecting piece 6;

[0041] A connecting rod 8 is connected to the middle part of the bottom surface of the connecting piece 6, and the connecting rod 8 is perpendicular to the connecting piece 6. A slot for the connecting rod 8 to enter and move is provided on the base 1, and the bottom of the slot is connected to a receiving cavity, and a moving contact 11 and a static contact 12 are installed in the receiving cavity, and the static contact 12 is located below the moving contact 11. A platform pillar 9 is fixedly connected to the moving contact 11, and a spring 10 is mounted on the platform pillar 9, and the spring 10 is fixedly connected to the base 1;

[0042] The moving contact 11 and the stationary contact 12 are both electrically connected to the monitoring device 15;

[0043] The connecting portion 602 of the connecting piece 6 is connected to the second terminal 3, and when the first clamping screw 4 tightens the first end of the clamping connecting piece 6 and the second clamping screw 5 tightens the connecting portion 602 of the clamping connecting piece 6, the connecting rod 8 is pressed downward toward the platform support 9, so that the moving contact 11 moves downward and connects with the static contact 12.

[0044] It should be noted that the monitoring device 15 described in this embodiment is a device of the prior art, which can be an LED display device, that is, when the moving contact 11 and the stationary contact 12 are connected, the monitoring device 15 can emit red light, which means that the protection pressure plate is in the "put in place" state. When the moving contact 11 and the stationary contact 12 are not connected, the monitoring device 15 does not emit light, and the staff can judge that the protection pressure plate is in the "exit" state.

[0045] Through the above design, Figure 4 In the situation shown, only when the connecting portion 602 of the connecting piece 6 is connected to the second terminal 3, and the first clamping screw 4 clamps the first end of the connecting piece 6, and the second clamping screw 5 clamps the connecting portion 602, the connecting rod 8 will be pressed downward toward the platform support 9, so that the moving contact 11 moves downward to be connected with the static contact 12, and then the monitoring device 15 is operated to send a signal of being put into place. The staff only needs to judge whether the protection pressure plate is put into place according to the signal of being put into place, thereby avoiding the judgment errors caused by the staff's naked eye observation and improving the safety of the power grid operation;

[0046] like Figure 4 In the situation shown, when the first clamping screw 4 does not clamp the first end of the connecting piece 6 and the second clamping screw 5 does not clamp the connecting portion 602 of the connecting piece 6, since the platform support column 9 is connected with a spring 10, the force of the spring 10 is used to keep the platform in a higher position inside the accommodating cavity without being subjected to the pressure of the connecting rod 8, thereby making the moving contact 11 and the static contact 12 in a disconnected state, and therefore, the monitoring device 15 cannot work.

[0047] like Figure 5 In the situation shown, when the first clamping screw 4 does not clamp the first end of the connecting piece 6 and the second clamping screw 5 clamps the connecting portion 602 of the connecting piece 6, the pressure exerted by the connecting rod 8 on the platform support 9 is insufficient, resulting in the platform support 9 being unable to drive the moving contact 11 and the static contact 12 to conduct, and therefore, the monitoring device 15 cannot work.

[0048] Furthermore, an operating handle 7 is fixedly mounted on the connecting piece 6 , and the operating handle 7 is fixed to the middle part of the top surface of the connecting piece 6 .

[0049] It should be noted that the design of the operating handle 7 can facilitate the staff to rotate the connecting piece 6.

[0050] Furthermore, the slot is an arc-shaped slot.

[0051] It should be noted that the shape of the slot needs to be designed according to the movement trajectory of the connecting rod 8. Since the connecting part 602 will be connected to the second terminal 3 only after the connecting piece 6 is rotated by a preset angle, the movement trajectory of the connecting rod 8 will form an arc. Therefore, the shape of the slot also needs to be designed to be an arc to allow the connecting rod 8 to move in and out.

[0052] Furthermore, the platform support 9 includes a hat-shaped platform and a support body;

[0053] The top surface of the hat-shaped platform is a curved surface, the bottom surface of the hat-shaped platform is a flat surface, and the top end of the support body is fixedly installed at the center of the bottom surface of the hat-shaped platform.

[0054] Furthermore, the spring 10 is sleeved on the support body, and the spring 10 is fixedly connected to the base 1 .

[0055] Furthermore, the bottom of the first terminal 2 and the bottom of the second terminal 3 both penetrate the base 1;

[0056] The bottom of the first terminal 2 and the bottom of the second terminal 3 are both connected to two terminal screws 13 and a connecting wire 14 , and the connecting wire 14 is located between the two terminal screws 13 .

[0057] Further, the connecting portion 602 is a semicircular notch;

[0058] The diameter of the semicircular notch matches the diameter of the second terminal 3 .

[0059] It should be noted that, through the above design, the connecting portion 602 can be embedded in the second terminal 3 .

[0060] Furthermore, a metal screw is provided at the top of the first terminal 2 and the top of the second terminal 3, and the metal screw is used for threaded connection of the first clamping screw 4 and the second clamping screw 5, and the first end of the connecting piece 6 is sleeved on the metal screw of the first terminal 2, and the connecting part 602 of the connecting piece 6 can be embedded in the metal screw of the second terminal 3.

[0061] It should be noted that the first terminal 2 and the second terminal 3 are both common components of existing chips, and their specific structures are not shown in detail in the accompanying drawings.

[0062] The working principle of the protective pressure plate in this embodiment is as follows:

[0063] When the staff loosens the first clamping screw 4 and the second clamping screw 5 and holds the operating handle 7 on the connecting piece 6 to turn the connecting part 602 of the connecting piece 6 to embed it into the second terminal 3, the connecting rod 8 perpendicular to the connecting piece 6 follows the groove (shaped groove) of the base 1 to reach the end of the groove. At this time, the bottom of the connecting rod 8 is directly above the platform pillar 9 inside the base 1, ensuring that the connecting piece 6 is placed in place.

[0064] When the first clamping screw 4 is tightened, the first end of the connecting piece 6 moves down to its position, driving the connecting rod 8 to move down. However, since the connecting portion 602 has not been clamped by the second clamping screw 5, the two ends of the connecting piece 6 are unbalanced, resulting in the connecting rod 8 on the connecting piece 6 not being in the middle of the top surface of the cap-shaped platform in the platform pillar 9, but sliding to the side of the untightened second clamping screw 5, resulting in the situation that the downward pressure stroke of the connecting rod 8 on the platform pillar 9 is insufficient, resulting in the inability to connect the moving contact 11 and the static contact 12. Only when the second clamping screw 5 is also tightened, the connecting rod 8 returns to the top of the cap-shaped platform in the platform pillar 9, the downward pressure stroke of the connecting rod 8 on the platform pillar 9 is in place, and the moving contact 11 and the static contact 12 are turned on, the monitoring device 15 can know that the protection pressure plate has been "put in place", otherwise the other moving contacts 11 and the static contacts 12 that are not turned on are monitored as "exit" status.

[0065] The above is a detailed introduction to a protective pressure plate provided by the present invention. For those skilled in the art, according to the ideas of the embodiments of the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A protective pressure plate, characterized in that: It includes a first terminal, a second terminal, a connecting piece, a base, and a monitoring device for sending a signal that the device is in place; The first binding post and the second binding post are fixedly mounted on the base at a preset distance; The first end of the connecting piece is sleeved on the first terminal, the connecting piece can be driven to rotate around the first terminal, and the top end of the first terminal is threadedly connected with a first clamping screw for clamping the first end of the connecting piece; The second end of the connecting piece is provided with a connecting portion, the connecting portion is detachably connected to the second terminal, and the top end of the second terminal is threadedly connected with a second clamping screw for clamping the connecting portion of the connecting piece; A connecting rod is connected to the middle part of the bottom surface of the connecting piece, and the connecting rod and the connecting piece are perpendicular to each other. A slot for the connecting rod to enter and move is opened on the base, and the bottom of the slot is connected to a receiving cavity, and a moving contact and a static contact are installed in the receiving cavity. The static contact is located below the moving contact, and a platform pillar is fixedly connected to the moving contact, and a spring is mounted on the platform pillar, and the spring is fixedly connected to the base; The moving contact and the stationary contact are both electrically connected to the monitoring device; The connecting portion of the connecting piece is connected to the second terminal, and the first clamping screw is tightened to clamp the first end of the connecting piece. When the second clamping screw is tightened to clamp the connecting portion of the connecting piece, the connecting rod is pressed downward toward the platform support, so that the moving contact moves downward and communicates with the static contact; An operating handle is also fixedly mounted on the connecting piece, and the operating handle is fixed to the middle part of the top surface of the connecting piece; The slot is an arc-shaped slot; The platform support column comprises a hat-shaped platform and a support column body; The top surface of the hat-shaped platform is a curved surface, the bottom surface of the hat-shaped platform is a flat surface, and the top end of the support body is fixedly installed at the center of the bottom surface of the hat-shaped platform; The spring is sleeved on the support body, and the spring is fixedly connected to the base; The bottom of the first terminal and the bottom of the second terminal both penetrate the base; The bottom of the first terminal and the bottom of the second terminal are both connected to two terminal screws and a connecting wire, and the connecting wire is located between the two terminal screws; The connecting portion is a semicircular notch; The diameter of the semicircular notch matches the diameter of the second terminal.

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