Auxiliary alarm contact device

Abstract

The utility model relates to the technical field of alarm contacts, and provides an auxiliary alarm contact device which comprises a contact body, the front side surface of the contact body is provided with a countersink, the bottom of the contact body is provided with a contact piece, and the back side surface of the contact body is provided with a moving device. The moving device comprises a first sliding groove, the first sliding groove is formed in the back side face of the contact body, the inner wall of the first sliding groove is slidably connected with a first sliding block, the back side face of the first sliding block is fixedly connected with an extension plate, and the front side face of the extension plate is provided with a through hole. According to the technical scheme, the effects of movement of the first sliding groove and movement of the contact body are achieved through the first sliding groove, the first sliding block, the extension plate and the through hole in the moving device in the prior art, so that the contact body can move on the extension plate through the sliding groove in the back face by means of the sliding block, and the contact body cannot move on the extension plate. And the device can be moved to different positions for installation, so that an alarm signal can be better triggered.

Description

Technical Field

[0001] The utility model relates to the technical field of alarm contacts, and specifically, to an auxiliary alarm contact device. Background Art

[0002] An alarm contact is one of the main accessories in an air switch, used for the alarm contact of a circuit breaker accident. And this contact only operates when the circuit breaker trips and breaks. It is mainly used when the load of the circuit breaker has faults such as overload short circuit or undervoltage and freely trips. The alarm contact converts from the original normally open position to the closed position, connecting the indicator light, electric bell, buzzer, etc. in the auxiliary circuit to display or remind the fault tripping state of the circuit breaker.

[0003] According to the publicly announced anti-deviation alarm contact device for a bucket elevator (publication number: CN2579845Y), it is composed of an inner plate, a contact, a spring, a proximity switch, etc. The inner plate moves under the extrusion of the conveyor belt, and the contact connected to it touches the proximity switch. The proximity switch operates to send a signal to the control center, thus realizing the anti-deviation alarm of the conveyor belt. This utility model has a simple and feasible structure, can increase the overall weight of the bucket elevator, and reduce unnecessary economic losses caused by the deviation of the conveyor belt;

[0004] However, the above application cooperates with an inner plate, a contact, a spring and a proximity switch assembly, making it impossible to arbitrarily move the position of the contact body, resulting in the possibility of not being able to better receive the alarm signal. Therefore, we propose an auxiliary alarm contact device that can adjust the position of the contact body to better receive the alarm signal. Summary of the Utility Model

[0005] The utility model proposes an auxiliary alarm contact device, which solves the problems raised in the above document.

[0006] The technical solution of the utility model is as follows: It includes a contact body. A countersunk hole is opened on the front side of the contact body. A contact piece is arranged at the bottom of the contact body. A moving device is arranged on the back side of the contact body;

[0007] The moving device includes a first sliding groove. The first sliding groove is opened on the back side of the contact body. The inner wall of the first sliding groove is slidably connected with a first slider. The back side of the first slider is fixedly connected with an extension plate. A through hole is opened on the front side of the extension plate. Through the first sliding groove, the first slider, the extension plate and the through hole inside the moving device, the movement of the first sliding groove and the movement of the contact body are realized, so that the contact body can move its position on the extension plate by using the slider through the sliding groove on the back, and can be moved to different positions for installation to better trigger the alarm signal.

[0008] The back side of the contact body is provided with a second sliding groove, and the inner wall of the second sliding groove is slidably connected with a second slider. A fixing port is provided at the top of the second slider. The function of the fixing port is to fix the moving contact body through the telescopic rod and the fixing port when it moves to an appropriate position.

[0009] The side of the contact body is fixedly connected with a rotating shaft, and a telescopic rod is fixedly connected to the circumferential surface of the rotating shaft. The function of the telescopic rod is that when moving the contact body, the telescopic rod can be pulled out of the fixing port, and when it is necessary to fix the contact body, the telescopic rod can be stretched to insert the telescopic end into the fixing port to fix the contact body.

[0010] The number of through holes is set to several and linearly arranged along the vertical central axis of the extension plate. The number of fixing ports is set to several and linearly arranged along the vertical central axis of the second slider. The function of setting the number of through holes to several and linearly arranging them along the vertical central axis of the extension plate is to enable the contact body to be installed when it moves to the position of the through hole on the extension plate.

[0011] The numbers of the first slider, the extension plate, the through hole, the second slider, the fixing port, the rotating shaft and the telescopic rod are respectively set to two and symmetrically arranged along the vertical central axis of the contact body. The function of setting the numbers of the first slider, the extension plate, the through hole, the second slider, the fixing port, the rotating shaft and the telescopic rod to two and symmetrically arranging them along the vertical central axis of the contact body is to better move the position of the contact body.

[0012] The fine crystal structure of the contact piece is 2 - 5μm, the IACS of the contact piece ≥ 80%, and the hardness of the contact piece is HV10 > 60. The function of the hardness of the contact piece being HV10 > 60 is to make its hardness better.

[0013] The material of the contact body is cast copper (Cu - C) according to standard EN1982. The chemical composition and mechanical properties of the contact body are respectively: chemical composition: Cu, tensile strength Rm: ≥ 150 N / mm2, conductivity: ≥ 95% and Brinell hardness HB: ≥ 40. The function of the material of the contact body being cast copper (Cu - C) is to make it more durable.

[0014] The brazing quality of the contact piece is a brazing rate of 85%. The function of the brazing quality of the contact piece being above 85% is to make its melting point higher.

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

[0016] 1. In the present utility model, through the first sliding groove, the first slider, the extension plate and the through hole inside the moving device, the movement of the first sliding groove and the movement of the contact body are realized, so that the contact body can move its position on the extension plate by using the slider through the sliding groove on the back, and can move to different positions for installation to better trigger the alarm signal. Brief Description of the Drawings

[0017] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0018] Figure 1 It is a three-dimensional external structure schematic diagram of the present utility model;

[0019] Figure 2 It is a three-dimensional overall structure schematic diagram of the mobile device of the present utility model;

[0020] Figure 3 It is a rear view of the three-dimensional overall structure of the mobile device of the present utility model;

[0021] Figure 4 For the present utility model Figure 2 A three-dimensional enlarged structure schematic diagram of A in;

[0022] Figure 5 For the present utility model Figure 3 A three-dimensional enlarged structure schematic diagram of B in.

[0023] In the figure: 1. Contact body; 2. Countersunk hole; 3. Contact piece; 4. Mobile device; 41. First chute; 42. First slider; 43. Extension plate; 44. Through hole; 45. Second chute; 46. Second slider; 47. Fixed port; 48. Rotating shaft; 49. Telescopic rod. Specific Embodiments

[0024] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment 1

[0026] As Figures 1 to 5 shown, this embodiment provides an auxiliary alarm contact device including a contact body 1. A countersunk hole 2 is provided on the front side of the contact body 1, a contact piece 3 is provided at the bottom of the contact body 1, and a mobile device 4 is provided on the back side of the contact body 1;

[0027] The mobile device 4 includes a first chute 41. The first chute 41 is provided on the back side of the contact body 1. The inner wall of the first chute 41 is slidably connected to a first slider 42. The back side of the first slider 42 is fixedly connected to an extension plate 43. A through hole 44 is provided on the front side of the extension plate 43.

[0028] On the back side of the contact body 1, a second sliding groove 45 is provided. A second sliding block 46 is slidably connected to the inner wall of the second sliding groove 45. A fixing opening 47 is provided at the top of the second sliding block 46. The function of the fixing opening 47 is to fix the moving contact body 1 through the telescopic rod 49 and the fixing opening 47 when it moves to an appropriate position.

[0029] A rotating shaft 48 is fixedly connected to the side of the contact body 1. A telescopic rod 49 is fixedly connected to the circumferential surface of the rotating shaft 48. The function of the telescopic rod 49 is that when moving the contact body 1, the telescopic rod 49 can be pulled out of the fixing opening 47, and when it is necessary to fix the contact body 1, the telescopic rod 49 can be stretched to insert the telescopic end into the fixing opening 47 to fix the contact body 1.

[0030] The number of through holes 44 is set to several and is linearly arrayed along the vertical central axis of the extension plate 43. The number of fixing openings 47 is set to several and is linearly arrayed along the vertical central axis of the second sliding block 46. The function of setting the number of through holes 44 to several and linearly arraying them along the vertical central axis of the extension plate 43 is to enable the contact body 1 to be installed when it moves to the position of the through hole 44 on the extension plate 43.

[0031] The numbers of the first sliding block 42, the extension plate 43, the through hole 44, the second sliding block 46, the fixing opening 47, the rotating shaft 48 and the telescopic rod 49 are respectively set to two and are symmetric with each other along the vertical central axis of the contact body 1. The function of setting the numbers of the first sliding block 42, the extension plate 43, the through hole 44, the second sliding block 46, the fixing opening 47, the rotating shaft 48 and the telescopic rod 49 to two and being symmetric with each other along the vertical central axis of the contact body 1 is to better move the position of the contact body 1.

[0032] In this embodiment, first, when it is necessary to enable the contact body 1 to better receive the alarm signal, the position of the contact body 1 can be adjusted. Let it receive the alarm signal at different positions. Manually moving the contact body 1 by the staff will move along the first sliding block 42 and the second sliding block 46 on the extension plate 43 in the first sliding groove 41 and the second sliding groove 45 on the back to adjust the position. When the staff moves the contact body 1 to the required position on the extension plate 43 and the counterbore 2 on the contact body 1 is also aligned with the through hole 44 on the extension plate 43, the contact body 1 can be installed. Thus, the position of the contact body 1 on the extension plate 43 can be adjusted so as to better receive the alarm signal. In order to prevent the contact body 1 from shaking when installing the contact body 1, when the contact body 1 moves to an appropriate position, by rotating the telescopic rod 49 on the rotating shaft 48, the telescopic end of the telescopic rod 49 is oriented towards the fixing opening 47, and then by pulling out and inserting the telescopic end of the telescopic rod 49 into the fixing opening 47, the contact body 1 can be fixed to prevent it from shaking.

[0033] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An auxiliary alarm contact device, characterized in that, It includes a contact body (1). A countersunk hole (2) is provided on the front side of the contact body (1). A contact piece (3) is provided at the bottom of the contact body (1). A moving device (4) is provided on the back side of the contact body (1). The moving device (4) includes a first chute (41). The first chute (41) is provided on the back side of the contact body (1). A first slider (42) is slidably connected to the inner wall of the first chute (41). An extension plate (43) is fixedly connected to the back side of the first slider (42). A through hole (44) is provided on the front side of the extension plate (43).

2. An auxiliary alarm contact device according to claim 1, characterized in that, A second chute (45) is provided on the back side of the contact body (1). A second slider (46) is slidably connected to the inner wall of the second chute (45). A fixing port (47) is provided at the top of the second slider (46).

3. The auxiliary alarm contact device according to claim 2, characterized in that, A rotating shaft (48) is fixedly connected to the side of the contact body (1). A telescopic rod (49) is fixedly connected to the circumferential surface of the rotating shaft (48).

4. The auxiliary alarm contact device according to claim 3, characterized in that, The number of the through holes (44) is set to be several and linearly arrayed along the vertical central axis of the extension plate (43). The number of the fixing ports (47) is set to be several and linearly arrayed along the vertical central axis of the second slider (46).

5. An auxiliary alarm contact device according to claim 4, characterized in that, The numbers of the first slider (42), the extension plate (43), the through hole (44), the second slider (46), the fixing port (47), the rotating shaft (48) and the telescopic rod (49) are respectively set to be two and symmetric with each other along the vertical central axis of the contact body (1).

6. An auxiliary alarm contact device according to claim 5, characterized in that, The fine crystal structure of the contact piece (3) is 2 - 5 μm. The IACS of the contact piece (3) ≥ 80%. The hardness HV10 of the contact piece (3) > 60.

7. An auxiliary alarm contact device according to claim 6, characterized in that, The material of the contact body (1) is cast copper. The chemical composition and mechanical properties of the contact body (1) are respectively: Chemical composition: Cu, Tensile strength Rm: ≥ 150 N / mm2, Conductivity: ≥ 95% and Brinell hardness HB: ≥ 40.

8. An auxiliary alarm contact device according to claim 7, characterized in that, The brazing quality of the contact piece (3) is a brazing rate of 85%.

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