CN212808002U

CN212808002U - Relay contact firmness strength detection device

Info

Publication number: CN212808002U
Application number: CN202021708176.XU
Authority: CN
Inventors: 李学强; 尹东; 韩笑; 刘艳; 付超; 李慕尧; 杨涛; 谢明军; 韩志强; 刘明
Original assignee: Xian Railway Signal Co Ltd
Current assignee: Xian Railway Signal Co Ltd
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2021-03-26
Anticipated expiration: 2030-08-17

Abstract

The utility model relates to a device for detecting the firm strength of a relay contact, which utilizes a mechanical structure to detect the firm strength of the relay contact, displays the acting force between the contact and a detection head in real time through a press machine, and is a detection method with high precision, simple operation and lower cost; when the device is used, the device is fixed on a platform of a press machine, the force value of the interaction between the detection head and the contact of the press machine can be monitored, and the firm strength of the contact can be detected simply, conveniently, rapidly and quantitatively by a technician; the utility model discloses a quantify the firm intensity of contact, and demonstrate the firm intensity of contact in real time through the press, the true strength of the firm intensity of contact is directly detected out, and detection method is simple and efficient, economic nature is strong, has effectively guaranteed the reliability and the stability of the firm intensity of relay contact to the detection efficiency of the firm intensity of contact has been improved.

Description

Relay contact firmness strength detection device

Technical Field

The utility model relates to a measure equipment of the firm intensity of relay contact, what say definitely is about a firm intensity detection device of relay contact for detect the firm intensity of relay contact, especially in batch production railway signal relay, can the firm intensity of quantitative detection contact.

Background

At present, various types of railway signal relays (hereinafter referred to as relays) are widely applied to a track signal control system, along with the high-speed development of a high-speed railway, the demand of relay products is rapidly increased, and meanwhile, higher requirements are placed on the product quality of the relays.

The contact is a key part of various relays, the quality level of the contact directly determines the reliability and stability of the relay, and generally, the contact is fixed on a contact piece (a static contact piece or a movable contact piece), and the reliable breaking or closing of the relay is ensured through the active motion of a movable contact and the passive contact of a static contact. The fixing modes of the contacts at present mostly adopt technical modes such as welding, riveting and the like, and because the fixing modes can not detect the firmness strength in an economic mode, the fixing methods of the contacts are all identified as special technological processes, and the firmness strength of the contacts can be ensured by strictly controlling various parameter indexes in the production technological process in the past, so that the importance of the fixing modes of the contacts can be seen. Such as: in the conventional process technology, the riveting strength of the contact is indirectly detected by measuring the diameter and height of the rivet head and the appearance size such as the gap between the contact and the contact piece. In addition, a mode of shearing the contact is also adopted, the riveting strength is calculated by observing the occlusion amount of materials between the contact and the contact piece in the shearing section, although the method objectively and truly reflects the riveting quality of the contact, the method has certain requirements on operation skills and detection equipment. The firm strength of the contact is only periodically subjected to destructive tests to verify the control condition of the whole process, and the method can directly detect the firm strength of the contact, but has poor economy.

Long-term past practice proves that the firm strength of the contact can be ensured in the relays produced in large batches only by quantifying the firm strength and detecting in an economical and feasible mode, so that the breaking or closing reliability and stability of the relay contact are effectively improved. Operators in the other line also want to have a device which is strong in operability and not high in technical requirements to detect the firmness.

Disclosure of Invention

The utility model aims at providing a reliable, easy operation, low cost's firm intensity detection device of relay contact to the operator can simple and convenient swift firm intensity of detection contact.

In order to solve the above problem, the technical scheme of the utility model is that: relate to a firm intensity detection device of relay contact, characterized by: the method comprises the following steps: the device comprises a dial indicator, an upper base, a contact piece, a contact, a sliding block, a scale, a sliding guide rail, a lower base, a screw rod nut, a screw rod, a locking screw, a V-shaped groove and a detection head; the upper base is fixed on the upper surface of the lower base through screws; the upper surface of the lower base is step-shaped, one side of the upper step surface of the lower base is carved with a scale for observing the displacement of the slide block, the upper step surface of the lower base is provided with a slide block guide rail, and the lower surface of the slide block is arranged on the slide block guide rail surface of the lower base; the slide block guide rail is used for ensuring the position precision of the movement of the slide block; the upper base is in a concave shape, a lead screw nut is embedded at the right end of the concave shape of the upper base, and a dial indicator is installed at the left end of the upper base and used for measuring the force for clamping the relay contact; one end of the screw rod penetrates through the screw rod nut and is connected with the sliding block; the right side surface of the sliding block is connected with the left end of the lead screw, so that the sliding block can move left and right in the concave surface.

The slider is provided with a cross V-shaped groove for fixing the relay contact with the measured firm strength, so that the contact piece of the connecting contact is in a horizontal suspension state.

The detection head is fixed on the head of the miniature electronic press, and the press controls the acting force applied to the detection head.

The utility model has the advantages that: the firm strength of the relay contact is detected by using a mechanical structure, and the acting force between the contact and the detection head is displayed in real time by using a press machine, so that the detection method has the advantages of high precision, simplicity in operation and lower cost; when the device is used, the device is fixed on a platform of a press machine, the force value of the interaction between the detection head and the contact of the press machine can be monitored, and the firm strength of the contact can be detected by a technician simply, conveniently, quickly and quantitatively. The utility model discloses a quantify the firm intensity of contact, and demonstrate the firm intensity of contact in real time through the press, the true strength of the firm intensity of contact is directly detected out, and detection method is simple and efficient, economic nature is strong, has effectively guaranteed the reliability and the stability of the firm intensity of relay contact to the detection efficiency of the firm intensity of contact has been improved.

The invention will be further explained with reference to the drawings of the embodiments.

Drawings

FIG. 1 is a schematic view of a contact securement strength testing apparatus; the working condition that the contact is clamped is shown in the figure;

FIG. 2 is a schematic view of an upper base;

FIG. 3 is a schematic view of a rivet contact;

fig. 4 is a schematic view of a solder contact.

In the figure: 1, a dial indicator; 2, an upper base; 3, a contact sheet; 4, a contact; 4-1, a first contact; 4-2, a second contact; 5, a sliding block; 6, dimension; 7, a sliding guide rail; 8, a lower base; 9, a screw nut; 10, a lead screw; 11, locking screws; 12, V-shaped grooves; 13, a detection head.

Detailed Description

Example 1:

as shown in fig. 1, the utility model relates to a firm intensity detection device of relay contact, characterized by: the method comprises the following steps: the device comprises a dial indicator 1, an upper base 2, a contact piece 3, a contact 4, a sliding block 5, a scale 6, a sliding guide rail 7, a lower base 8, a screw nut 9, a screw 10, a locking screw 11, a V-shaped groove 12 and a detection head 13; the upper base 2 is fixed on the upper surface of the lower base 8 through screws; the upper surface of the lower base 8 is step-shaped, one side of the upper step surface of the lower base 8 is carved with a scale 6 for observing the displacement of the sliding block 5, the upper step surface of the lower base 8 is provided with a sliding block guide rail 7, and the lower surface of the sliding block 5 is arranged on the sliding block guide rail 7 surface of the lower base 8; the slide block guide rail 7 is used for ensuring the position precision of the movement of the slide block 5; the upper base 2 is in a concave shape, a lead screw nut 9 is embedded at the right end of the concave shape of the upper base 2, and a dial indicator 1 is installed at the left end of the upper base 2 and used for measuring the force for clamping the relay contact 4; one end of the screw rod 10 penetrates through the screw rod nut 9 and is connected with the sliding block 5; the right side surface of the sliding block 5 is connected with the left end of the screw rod 10, so that the sliding block 5 can move left and right in the concave surface, the rotary motion is converted into the linear motion of the sliding block 5 through the screw rod 10, the sliding block 5 is pushed or pulled to move left and right, the distance L2 between the sliding block 5 and the inner surface of the groove at the left side of the upper base 2 is adjusted, and the distance L2 is adjusted according to the diameter d of the measured contact 4; the center-to-center distance L1 between the test head 13 and the contact 4 is a parameter for verifying the curing through a large amount of test data, and the detection is only given through input.

The slider 5 is provided with a cross V-shaped groove 12 for fixing the relay contact 4 with the measured strength, and the contact 4 is fixed on the contact piece 3 and is in a horizontal suspension state.

The detection head 13 is fixed on the head of a miniature electronic press (hereinafter referred to as press), the press controls the up-and-down movement of the detection head, and monitors the acting force applied to the detection head.

The diameter of the contact 4 is 7mm, the distance L2 is 5.5mm, the distance L1 is 13mm, the clamping force is 0.3mm, the maximum force value is 40N, and the contact 4 and the contact piece 3 are riveted together through a riveting process method.

As shown in fig. 1, fig. 2, and fig. 3, the working process of the embodiment of the present invention is:

1) the utility model is fixed on the platform of the press, firstly, the distance L2 between the slide block 5 and the inner surface of the left groove of the upper base 2 is adjusted to 6.5mm, and the distance L2 is read from the scale of the lower base 8;

2) the head of a first contact 4-1 is arranged in a V-shaped groove 12 on the left inner side surface of an upper base 2 and the left end surface of a sliding block 5, a contact pin and a contact piece 3 of the first contact 4-1 are exposed on the surfaces of the sliding block 5 and the upper base 2, then a screw rod 10 is rotated, and the contact piece 3 is adjusted to be in a horizontal suspension state until the first contact 4-1 is clamped;

3) adjusting the position of the dial indicator 1 to enable a measuring head of the dial indicator 1 to contact the left side face of the sliding block 5, and setting the numerical value of the dial indicator 1 to be 0 after the adjustment is finished; rotating the lead screw 10 again to push the slide block 5 to move leftwards continuously, observing the displacement of the slide block 5 through the dial indicator 1, stopping rotating the lead screw 10 when the displacement is 0.3mm, and locking the position of the lead screw 10 through the locking screw 11;

4) starting the press machine to enable the detection head 13 to move downwards at a constant speed until the detection head 13 contacts the contact piece 3 and continues to move downwards, observing the interaction force between the detection head 13 and the contact piece 3 at the moment, and when the press machine acquires the maximum action force, indicating that the relative displacement between the first contact 4-1 and the contact piece 3 occurs, wherein the value is the riveting strength of the reinforced contact (contact 4);

5) closing the press causes the detection head 13 to move upwards to the original position, loosening the locking screw 11, rotating the lead screw 10 to move the slider 5 to the right, and loosening the first contact 4-1.

Example 2:

the diameter of the contact 4 is 2.5mm, the distance L2 is 2.5mm, the distance L1 is 9.5mm, the clamping force is 0.25mm, the welding strength is 36N, and the contact 4 and the contact piece 3 are welded together by the existing welding process.

As shown in fig. 1, fig. 2, and fig. 4, the working process of the embodiment of the present invention is: the method is characterized in that:

2) the head of the second contact 4-2 is arranged in a V-shaped groove 12 on the left inner side surface of the upper base 2 and the left end surface of the sliding block 5, the contact pin and the contact point sheet 3 of the second contact 4-2 are arranged on the exposed surfaces of the sliding block 5 and the upper base 2, then the screw rod 10 is slightly rotated until the second contact 4-2 is slightly clamped, and then the contact point sheet 3 is adjusted to be in a horizontal suspension state;

3) adjusting the position of the dial indicator 1 to enable a measuring head of the dial indicator 1 to contact the left side face of the sliding block 5, and setting the numerical value of the dial indicator 1 to be 0 after the adjustment is finished; rotating the lead screw 10 again to push the slide block 5 to move leftwards continuously, observing the displacement of the slide block 5 through the dial indicator 1, stopping rotating the lead screw 10 when the displacement is 0.25mm, and locking the position of the lead screw 10 through the locking screw 11;

4) starting the press machine to enable the detection head 13 to move downwards at a constant speed until the detection head 13 contacts the contact piece 3 and continues to move downwards, observing the interaction force between the detection head 13 and the contact piece 3 at the moment, and when the press machine acquires the maximum action force, indicating that the relative displacement between the second contact 4-2 and the contact piece 3 occurs, wherein the value is the welding strength of the reinforced contact (the contact 4);

5) closing the press causes the detection head 13 to move upwards to the original position, loosening the locking screw 11, rotating the lead screw 10 to move the slider 5 to the right, and loosening the second contact 4-2.

The first contact 4-1 and the second contact 4-2 of the two embodiments are different in size and shape, and the head of the second contact 4-2 is of a single-side structure.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all changes, substitutions or improvements of the structure and features according to the claimed scope of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a firm intensity detection device of relay contact which characterized by: the method comprises the following steps: the device comprises a dial indicator (1), an upper base (2), a contact piece (3), a contact (4), a sliding block (5), a scale (6), a sliding guide rail (7), a lower base (8), a screw nut (9), a screw (10), a locking screw (11), a V-shaped groove (12) and a detection head (13); the upper base (2) is fixed on the upper surface of the lower base (8) through screws; the upper surface of the lower base (8) is step-shaped, one side of the upper step surface of the lower base (8) is carved with a scale (6) for observing the displacement of the sliding block (5), the upper step surface of the lower base (8) is provided with a sliding guide rail (7), and the lower surface of the sliding block (5) is installed on the surface of the sliding guide rail (7) of the lower base (8); the sliding guide rail (7) is used for ensuring the position precision of the movement of the sliding block (5); the upper base (2) is in a concave shape, a lead screw nut (9) is embedded at the right end of the concave shape of the upper base (2), and a dial indicator (1) is installed at the left end of the upper base (2) and used for measuring the force for clamping the contact (4); one end of the screw rod (10) penetrates through the screw rod nut (9) to be connected with the sliding block (5); the right side surface of the sliding block (5) is connected with the left end of the screw rod (10), so that the sliding block (5) can move left and right in the concave surface.

2. The relay contact firmness strength detection device according to claim 1, wherein: the slider (5) is provided with a cross V-shaped groove (12) for fixing the contact (4) with the tested firm strength, so that the contact piece (3) of the contact (4) is in a horizontal suspension state.

3. The relay contact firmness strength detection device according to claim 1, wherein: the detection head (13) is fixed on the head of the miniature electronic press, and the press controls the acting force applied to the detection head (13).