Railway track circuit closure hook

Abstract

The utility model relates to detection tool technical field especially relates to a railway track circuit is sealed and is connected iron hook. Including handle body, one end of handle body is provided with insulating sleeve and is provided with second hook body in another end, the position of handle body is close to second hook body and is connected with second contact rod of sliding, second contact rod is insulated with second hook body, second contact rod penetrates both sides of handle body, one end of second contact rod is provided with contact, spring is arranged between contact and handle body, the portion of second contact rod in handle body other side is provided with nut, second contact rod electric connection wire, the position of handle body in both sides of second contact rod all is provided with support block, support block is located handle body close to the side of contact, the line of the two support blocks is perpendicular with the extension direction of handle body. The utility model is contacted with the resistance value of steel rail when detecting each time, and the difference is smaller, and the difference of test result is also smaller.

Description

Technical Field

[0001] This utility model relates to the field of testing tools, and in particular to a railway track circuit sealing hook. Background Technology

[0002] Railway track circuit sealing hooks are used to simulate train wheelsets occupying the rails, thus short-circuiting the circuit formed by the two rail lines and rail insulation. This is used to detect whether the track section is occupied or in contact with locomotive and rolling stock wheelsets. It is also used to control signaling devices and turning devices to ensure traffic safety. It can effectively prevent railway signaling equipment interlocking failures and accidents. Railway maintenance regulations stipulate that these hooks must be used regularly to seal and short-circuit at the feed and receive ends or turnout points of the track circuit, testing to ensure the residual voltage is below a safe value. This hook is used to complete this work, a frequent and important task in railway signaling equipment maintenance. It can prevent and detect problems such as malfunctioning signaling equipment and changes in track parameters. In existing technology, different people use different amounts of force when sealing with the hook, resulting in different contact resistance with the rail and thus different test results. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a railway track circuit sealing hook in response to the above-mentioned technical deficiencies.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a railway track circuit sealing hook, including a handle body, an insulating sleeve at one end of the handle body and a second hook body at the other end, a second contact rod slidably connected to the handle body near the second hook body, the second contact rod being insulated from the second hook body, the second contact rod passing through both sides of the handle body, a contact at one end of the second contact rod, a spring between the contact and the handle body, a nut on the other side of the second contact rod, the second contact rod being electrically connected to a wire, and support blocks on both sides of the handle body at the position of the second contact rod, the support blocks being located on the side of the handle body near the contact, the line connecting the two support blocks being perpendicular to the extension direction of the handle body.

[0005] To further optimize this technical solution, a stepped hole is provided on the handle, the spring is located inside the stepped hole and sleeved on the second contact rod, an insulating sleeve is provided on the inner wall of the stepped hole, the contact can enter the insulating sleeve, an insulating ring coaxial with the stepped hole is provided on the side of the handle away from the contact, and a second wiring part is provided on the end of the second contact rod away from the contact.

[0006] To further optimize this technical solution, a copper block is provided at the end of the contact away from the handle.

[0007] To further optimize this technical solution, the side of the copper block away from the contact is curved.

[0008] To further optimize this technical solution, a blind hole is provided inside the handle, penetrating one end of it. The opening of the blind hole is located at the end of the handle where an insulating sleeve is provided. A wire hole is provided on the handle, through which the wire passes into the blind hole and penetrates the insulating sleeve outward.

[0009] To further optimize this technical solution, a first hook body is also provided on the handle body, and a first contact rod is provided on the side of the first hook body near the insulating sleeve. One end of the first contact rod is provided with a tip, and the other end is provided with a first wiring part.

[0010] Compared with the prior art, the present invention has the following advantages: the second contact rod is slidably connected to the handle, one end of the second contact rod is provided with a contact, a spring is provided between the contact and the handle, and a support block is also provided on the handle. During testing, when the support block contacts the rail, the degree of compression of the spring no longer changes, so that the pressure between the contact and the rail is basically the same in each test, thus the contact resistance between the contact and the rail is small in each test, and the test results are also small in difference. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a railway track circuit sealing hook.

[0012] Figure 2 for Figure 1 A magnified view of point I in the middle.

[0013] Figure 3 for Figure 1 Enlarged view of section II.

[0014] In the diagram: 1. Handle; 11. Threading hole; 2. Insulating sleeve; 3. Wire; 4. First hook body; 5. Second hook body; 6. First contact rod; 61. First wiring part; 62. Tip; 7. Second contact rod; 71. Second wiring part; 72. Contact; 73. Copper block; 8. Support block. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0016] Detailed implementation method: combined with Figure 1-3As shown, a railway track circuit sealing hook includes a handle 1. One end of the handle 1 is provided with an insulating sleeve 2, and the other end is provided with a second hook body 5. In use, the hand holds the insulating sleeve 2 without contacting the handle 1. A second contact rod 7 is slidably connected to the handle 1 near the second hook body 5. The second contact rod 7 is on the plane of the second hook body 5 and is insulated from the second hook body 5. The second contact rod 7 passes through both sides of the handle 1. One end of the second contact rod 7 is provided with a contact 72, which is used to contact the steel... The upper surface of the rail is in contact. A spring is provided between the contact 72 and the handle 1. A nut is provided on the part of the second contact rod 7 on the other side of the handle 1. The second contact rod 7 is electrically connected to the wire 3. Insulated support blocks 8 are provided on both sides of the second contact rod 7 on the handle 1. The support blocks 8 are located on the side of the handle 1 closer to the contact 72. The line connecting the two support blocks 8 is perpendicular to the extension direction of the handle 1. In the natural state, the distance from the lower end of the contact 72 to the handle 1 is greater than the distance from the lower end of the support block 8 to the handle 1. As is well known, a rail includes a bottom and a waist that is much narrower than the bottom. A head that is wider than the waist is provided above the waist, and there are two rails on one rail. In use, the two sealing hooks are used as a pair. The wires on the two sealing hooks are connected together, and the resistance of the wires meets the requirements. Each of the two sealing hooks is used for one rail. Specifically, the second hook 5 is hooked on the lower side of the outer side of the rail head, and the contact 72 contacts the upper surface of the rail head. The insulating sleeve 2 is located between the two rails. Then, the two insulating sleeves 2 are pressed down at the same time, so that the support block 8 contacts the upper surface of the rail. At this time, the spring is compressed. The degree of compression of the spring is basically the same in each test, and the pressure between the contact 72 and the rail is also basically the same. Therefore, the resistance value of contact with the rail is small in each test, and the test results are also small.

[0017] Furthermore, the handle 1 is provided with a stepped hole, the spring is located in the stepped hole and sleeved on the second contact rod 7, the inner wall of the stepped hole is provided with an insulating sleeve 2, the contact 72 can enter the insulating sleeve 2, the side of the handle 1 away from the contact 72 is provided with an insulating ring coaxial with the stepped hole, so that the second contact rod 7 is insulated from the handle 1 and the second hook body 5, and the end of the second contact rod 7 away from the contact 72 is provided with a second wiring part 71, which is electrically connected to a wire.

[0018] Furthermore, a copper block 73 is provided at the end of the contact 72 away from the handle 1, which has good conductivity.

[0019] Furthermore, the side of the copper block 73 away from the contact 72 is curved, preferably spherical.

[0020] Furthermore, a blind hole is provided inside the handle 1, penetrating one end of it. The opening of the blind hole is located at the end of the handle 1 where the insulating sleeve 2 is provided. A wire hole 11 is provided on the handle 1. The wire 3 passes through the wire hole 11 into the blind hole and penetrates the insulating sleeve 2 outward, making it easy to grip the insulating sleeve 2.

[0021] Furthermore, the handle 1 is also provided with a first hook 4. The handle 1 has a first contact rod 6 on the side of the first hook 4 near the insulating sleeve 2. The first contact rod 6 is insulated from the handle 1. One end of the first contact rod 6 is provided with a tip 62 and the other end is provided with a first connecting part 61. The hardness of the tip 62 is greater than that of the rail. The first connecting part 61 is also electrically connected to the conductor. Rails are prone to rusting after rain, especially in newly opened stations, branch lines, marshalling yards, hump yards, and places where rails are replaced. Rust is present on the rail surface in large quantities. In the existing technology, the rust on the rail surface must be removed with files, sandpaper, etc. (otherwise the conductivity will be poor) before testing can be carried out. At this time, the tip 62 can be used to contact the upper surface of the rail, and the first hook 4 can be used to hook the lower side of the outer side of the rail head. Press down the insulating sleeve 2 so that the tip 62 slightly penetrates the rail to achieve conductivity. In this case, a miniature current transformer can be installed inside the handle 1, with wires passing through the transformer. The transformer is connected in series with an LED indicator light. If the light is stable, there is no need to press down the insulating sleeve 2 with more force.

[0022] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A railway track circuit sealing hook, comprising a handle (1), characterized in that: An insulating sleeve (2) is provided at one end of the handle (1), and a second hook (5) is provided at the other end. A second contact rod (7) is slidably connected to the handle (1) near the second hook (5). The second contact rod (7) is insulated from the second hook (5). The second contact rod (7) passes through both sides of the handle (1). A contact (72) is provided at one end of the second contact rod (7). A spring is provided between the contact (72) and the handle (1). A nut is provided on the part of the second contact rod (7) on the other side of the handle (1). The second contact rod (7) is electrically connected to a wire (3). Support blocks (8) are provided on both sides of the handle (1) at the position of the second contact rod (7). The support blocks (8) are located on the side of the handle (1) near the contact (72). The line connecting the two support blocks (8) is perpendicular to the extension direction of the handle (1).

2. The railway track circuit sealing hook according to claim 1, characterized in that: The handle (1) is provided with a stepped hole, the spring is located in the stepped hole and sleeved on the second contact rod (7), the inner wall of the stepped hole is provided with an insulating sleeve (2), the contact (72) can enter the insulating sleeve (2), the side of the handle (1) away from the contact (72) is provided with an insulating ring coaxial with the stepped hole, and the end of the second contact rod (7) away from the contact (72) is provided with a second wiring part (71).

3. The railway track circuit sealing hook according to claim 1, characterized in that: A copper block (73) is provided at the end of the contact (72) away from the handle (1).

4. A railway track circuit sealing hook according to claim 3, characterized in that: The side of the copper block (73) away from the contact (72) is curved.

5. A railway track circuit sealing hook according to claim 1, characterized in that: The handle (1) has a blind hole that passes through one end. The opening of the blind hole is located at the end of the handle (1) where the insulating sleeve (2) is provided. The handle (1) has a wire hole (11). The wire (3) passes through the wire hole (11) into the blind hole and penetrates the insulating sleeve (2) outward.

6. A railway track circuit sealing hook according to any one of claims 1-5, characterized in that: The handle (1) is also provided with a first hook (4), and the handle (1) is provided with a first contact rod (6) on the side of the first hook (4) near the insulating sleeve (2). One end of the first contact rod (6) is provided with a tip (62) and the other end is provided with a first wiring part (61).

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