CN202676741U - Manual clamping device for testing track circuit parameters - Google Patents

Abstract

The utility model discloses a clamping device for manual track circuit parameter testing, which comprises a handle, a handle shaft, a cam, a pressing block, a clamping hook, a rotating shaft, a box body and the like. The handle is installed on the handle shaft, and the handle shaft is installed on the box body. There are two clamping hooks symmetrically on both sides of the box body. The cam is equipped with a pressing block below the cam. When the handle rotates, the axial profile curve first makes the clamping hook vertical and maintains it. After the clamping hook is vertical, with the further rotation of the cam, the pressing block is pressed down under the action of the radial profile curve of the cam to realize the clamping hook. The purpose of the conductor pressing tightly against the surface of the track.

Description

A clamping device for manual track circuit parameter testing

technical field

The invention belongs to a mechanical clamping device for testing primary parameters of a track circuit, and its purpose is to clamp a conductor on a rail when testing the primary parameters of a track circuit. the

Background technique

At present, railways and urban rail transit need to conduct a parameter test of the track circuit. When measuring a parameter of the track circuit, the conductor used for the measurement needs to be fixed on the track. Due to the particularity of the measurement operation, the test clamping device is required to have stable clamping, small contact resistance and fast clamping. In 201120121949.9, a new track circuit parameter test auxiliary device with copper as the main body was announced, which has the advantages of fast speed, etc., but the measurement uses its own weight to make the conductor contact with the rail, and the stability and contact resistance need to be further improved. The jack item is a new type of clamping device for primary parameter testing of track circuits, which increases the stability of the contact of the conductor, but the convenience and simplicity are not enough. the

In actual track parameter testing, a clamp that can quickly clamp and connect the conductor and the track is often required. The present invention proposes a new clamping device. the

Contents of the invention

The invention provides a clamping device for manual track circuit parameter testing, which has the characteristics of manual operation, fast clamping, stable and reliable clamping, small contact resistance and the like. the

In order to achieve the above effects, a manual track circuit parameter test clamping device includes a handle, a handle shaft, a cam, a pressing block, a clamping hook, a rotating shaft, a box and the like. the

Preferably, the handle is mounted on the handle shaft, and the handle shaft is mounted on the box body. A cam is installed on the handle shaft in the box body. Pulling the handle can drive the cam to rotate. When the cam rotates, it will drive the clamping hook and the pressing block to produce action . the

Preferably, two clamping hooks are arranged symmetrically on both sides of the box body, and the hook portions of the clamping hooks match the hypotenuse of the rail section. The clamping hook is mounted on the box body through the support with a rotating shaft. The upper part of the two clamping hooks on each side of the box is integrated with a beam. There is a push rod in the middle of the beam, and a return spring is connected between the beams on both sides; The end-face contact;

Preferably, the inner lower part of the box is equipped with a compression block, and guide screws are installed on both sides of the compression block. The guide screw can move in the straight groove of the box body, and the compression block can move up and down under the action of the radial curve profile of the cam. . the

Preferably, the cam has both an axial curved profile and a radial curved profile. The change of the axial curve of the cam drives the clamping hook to rotate relative to the rotating shaft through the push rod, and the axial curve profile makes the clamping hook open when it is not working, and keeps the clamping hook vertical when clamping. The radial curved profile of the cam loosens the pressing block when it is not working, and presses down the pressing block when it is clamped, which plays a role in pressing the conductor to the surface of the track. the

Preferably, the lower surface of the pressing block is equipped with a soft rubber pad, and the rubber pad is deformed under the action of pressure, so that its surface can automatically adapt to the change of the curve of the track surface, and the contact area between the conductor and the track surface is increased. Helps reduce contact resistance. the

Preferably, the cam has a radial curve profile and an axial curve profile at the same time, and there is a cooperative relationship between the two. When the handle drives the cam to rotate, the axial curve profile of the cam first rotates the clamping hook to vertical through the ejector rod and maintains , the radial curve profile of the cam presses down the pressing block after the clamping hook is vertical. the

Preferably, the radial curve on the cam has sufficient travel, and the pressing distance of the pressing block can be changed through different rotation angles of the handle, so that the clamping device can automatically adapt to different rails and can clamp the conductor On different rails such as 38, 43, 50, 60, etc. the

Preferably, the radial curve profile of the cam has a small pressure angle, and the maximum pressure angle is smaller than the friction angle, which can generate a relatively large pressing force and have a self-locking effect. Due to the joint action of large pressing force and soft rubber, the conductor is bent to match the radian of the track surface, so that the conductor and the track surface are in full contact, reducing the contact resistance between the conductor and the track, and due to the radial curve of the cam With a small pressure angle, when the cam is pressing the conductor, the cam and the pressing block are in a self-locking state, which prevents loosening under external disturbance after pressing, and improves the stability of the clamping. the

Due to the adoption of the above technical scheme, a manual track circuit parameter test clamping device can quickly clamp the conductor on the track by pulling the handle, and achieve the characteristics of large pressing force, small contact resistance, stable and reliable clamping . the

Description of drawings

Fig. 1 is a schematic front view of the structural principle of a clamping device for manual track circuit parameter testing. the

Fig. 2 is a schematic left view of the structural principle of a clamping device for manual track circuit parameter testing. the

Fig. 3 is a state in which the axial curved profile of the cam makes the clamping hook vertical in a clamping device for manual track circuit parameter testing. the

Fig. 4 is a manual track circuit parameter test clamping device, the cam axial curve profile keeps the clamping hook vertical, and the radial curve profile presses down the pressing block to press the conductor on the rail. the

Fig. 5 is a structural schematic diagram of a cam in a clamping device for manual track circuit parameter testing. the

Fig. 6 is the cooperation relation of the axial curved profile and the radial curved profile of cam in a kind of manual track circuit parameter test clamping device. the

Detailed ways

Further illustrate implementation method below in conjunction with accompanying drawing: /

A manual track circuit parameter testing clamping device, comprising a handle 9, a handle shaft 8, a cam 6, a pressing block 10, a clamping hook 2, a rotating shaft 3, a box body 7 and the like. the

The handle 9 is installed on the handle shaft 8, and the handle shaft is installed on the box body 7. The cam 6 is installed on the handle shaft 8 in the box body 7. Pulling the handle 9 can drive the cam 6 to rotate. When the cam 6 rotates, it will drive the clamping Hook 2 and pressing block 10 produce action. the

Two equal-height clamping hooks 2 are symmetrically arranged on both sides of the box body 7, and the hook portion of the clamping hook 2 matches the hypotenuse of the rail 1 section. The clamping hook 2 is installed on the casing with the rotating shaft 3 through the bearing 7 . The upper parts of the two clamping hooks 2 on one side of the box body 7 are integrated with a crossbeam 21, and a return spring 22 is connected between the crossbeams on both sides. There is a push rod 4 in the middle of the crossbeam 21. The part is in contact with the end face of the cam 6 under the action of the spring 22. the

The lower part of the inner side of the box body 7 is equipped with a compression block 10, and guide screws 101 are installed on both sides of the compression block 10. Move up and down under action. the

The cam has an axial curved profile 61 and a radial curved profile 62 at the same time. When the handle 9 rotates, the cam axial curved profile 61 drives the clamping hook 2 to rotate relative to the rotating shaft 3 through the ejector rod 4, and the axial curved profile 61 makes the clamping hook open when it is not working, and the clamping hook is clamped when it is clamped. Hook 2 remains vertical. The radial curve profile 62 of cam loosens the compression block 10 when not working, and presses down the compression block 10 when clamping, which plays the role of conductor 12 being pressed on the track 1 surface. the

The lower surface of the pressing block 10 is equipped with a soft rubber pad 11, and the rubber pad 11 is deformed under pressure, so that the lower surface can automatically adapt to the change of the curve of the surface of the track 1, and the distance between the conductor 12 and the surface of the track 1 is increased. The contact area is beneficial to reduce the contact resistance. the

The cam has a radial curved profile 62 and an axial curved profile 61 at the same time, and there is a cooperative relationship between the two, as shown in FIG. 6 . When the handle drives the cam to rotate, the axial curved profile of the cam rotates the clamping hook to vertical through the push rod and maintains it, and the radial curved profile of the cam presses down the briquetting block after the clamping hook is vertical. Specifically as follows: when the handle 9 rotates, the axial curve profile 61 first makes the clamping hook 2 vertical and maintains, preventing the clamping hook 2 from opening due to the slope of the lower surface of the track 1 during clamping. After the clamping hook 2 is vertical, along with the further rotation of the cam 6, the pressing block 10 is pressed down under the action of the cam radial curve profile 62, and the conductor 12 is pressed tightly on the track surface. the

The cam radial curve profile 62 has a small pressure angle, and the maximum pressure angle is smaller than the friction angle, which can produce a larger pressing force and has a self-locking effect. Due to the joint action of the large pressing force and the soft rubber 11, the conductor 12 is in full contact with the surface of the track 1, which reduces the contact resistance between the conductor 12 and the track 1, and because the cam radial curve profile 62 has a small pressure angle , when the cam 6 is pressing the conductor, the cam 6 and the pressing block 10 are in a self-locking state, which prevents loosening under external disturbance after pressing, and improves the stability of the clamping. the

Due to the adoption of the above technical scheme, a manual track circuit parameter test clamping device, when the handle 9 is pulled to rotate the cam 6, two coherent actions are produced: as the handle 9 drives the cam 6 to rotate, first the clamping hook 2 Keep it upright, and with the further rotation of the cam 6, the pressing block 10 will press the conductor 12 tightly on the track surface under the action of the cam to complete the clamping work of the conductor on the track surface. the

The above is only a specific embodiment of the utility model, but the technical characteristics of the utility model are not limited thereto, and any changes or modifications made by those skilled in the art within the scope of the utility model are all covered by the utility model. In the scope of the new patent. the

Claims (4)

1. Manual clamping device for testing track circuit parameters, it is characterized in that: comprise casing, laterally be installed with Handle axis in the casing, the Handle axis extension is provided with handle, and the Handle axis intermediate sleeve is equipped with cam; Described casing both sides respectively are provided with clamp hook, and the top of clamp hook is provided with crossbeam, and there is push rod at the crossbeam middle part, connects back-moving spring between the crossbeam of both sides; Described push rod top contacts with cam face, and described cam below is connected with briquetting.

2. a kind of Manual clamping device for testing track circuit parameters as claimed in claim 1, it is characterized in that: described clamp hook is installed on the casing with rotating shaft and bearing, and clamp hook is at least respectively installed one in the casing left and right sides

3. a kind of Manual clamping device for testing track circuit parameters as claimed in claim 1, it is characterized in that: described cam has diametral curve profile and axial curved profile simultaneously, in handle band moving cam rotation process, camshaft rotates to vertically and maintenance clamp hook to curved profile by push rod, and the diametral curve profile of cam is depressed briquetting after clamp hook is vertical.

4. a kind of Manual clamping device for testing track circuit parameters as claimed in claim 1, it is characterized in that: described briquetting below is provided with rubber cushion blocks.

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