A multi-track applicable rail clamp

Abstract

The present invention provides a multi-track applicable rail clamp that can be simultaneously applied to various types of steel rails currently used on my country's railways; it has a simple structure and is easy to operate. The rail clamp comprises: a sliding nut, a limit frame, a screw, a rail clamp, a latch and a base plate; the upper end of the screw is threadedly connected to the sliding nut, and the lower end is connected to the base plate; two rail clamps are symmetrically arranged relative to the screw, and the sliding nut and the base plate are respectively provided with grooves that match the rail clamps at positions corresponding to the rail clamps at both ends; the upper ends of the two rail clamp bodies are respectively located in the grooves on the left and right end surfaces of the sliding nut, and interfere with the grooves on the sliding nut; the spacing between the two rail clamp bodies increases from top to bottom, and when the sliding nut moves upward along the axis of the screw, the sliding nut pushes the two rail clamp bodies outward; the lower ends of the two rail clamp bodies are respectively located in the grooves on the left and right end surfaces of the base plate, and are pinned to the base plate through the latch; the rail clamp can rotate around the latch axis.

Description

Technical Field

[0001] The invention relates to a rail clamp, in particular to a rail clamp applicable to multiple tracks. Background Art

[0002] A rail clamp is a safety device that prevents a locomotive from slipping along the rails during operation. It typically uses a clamp attached to the locomotive, clamping the sides of the rail head or the belly of the rail to prevent slippage. The clamp is connected to the locomotive through a hole at the rear end of the clamp shaft. As the locomotive moves, it drags the clamp along with it. The guide wheel, under the weight of the clamp, rolls along the serpentine track. The guide wheel bracket and guide clamp shaft drive the clamp as a whole, allowing it to float along the track surface on a fixed axis.

[0003] At present, the commonly used types of rails on my country's railways are 43kg / m, 50kg / m, and 60kg / m. For ease of use, the rail clamp should be able to be applied to these types of rails at the same time. Summary of the Invention

[0004] In view of this, the present invention provides a multi-rail applicable rail clamp that can be simultaneously applicable to multiple types of rails; and has a simple structure and is easy to operate.

[0005] A rail clamp suitable for multiple rails, comprising: a sliding nut, a screw, a rail clamp, a latch and a base plate;

[0006] The upper end of the screw is threadedly connected to the sliding nut, and the lower end is connected to the base plate; the screw and the sliding nut form a screw-nut pair, and when the screw is rotated, the sliding nut moves along the axis of the screw;

[0007] Two rail clamps are symmetrically arranged relative to the screw rod, and the rail clamps include a clamp body and a clamping end at the lower end of the clamp body, and the clamping end is used to cooperate with the side of the rail to clamp the rail;

[0008] The sliding nut and the positions at both ends of the base plate corresponding to the rail clamp are respectively provided with grooves that cooperate with the rail clamp; the upper ends of the two rail clamp bodies are respectively located in the grooves on the left and right end surfaces of the sliding nut, and interfere with the grooves on the sliding nut; the opposing surfaces of the two rail clamp bodies are inclined surfaces inclined outwardly, so that the distance between the two rail clamp bodies increases from top to bottom, and when the sliding nut moves upward along the screw axis, the sliding nut pushes the two rail clamp bodies outward;

[0009] The lower ends of the two rail clamp bodies are respectively located in the grooves on the left and right end surfaces of the base plate and are pinned to the base plate through pins; the rail clamp can rotate around the pin axis.

[0010] Preferably, a limit frame is provided at the position where the groove is located on the sliding nut, and the rail clamp is located in the limit frame.

[0011] Preferably, the lower end of the screw rod extends into the groove of the bottom plate, and the upper end surface of the bottom plate is fixedly connected to a limiting plate for limiting the screw rod.

[0012] Preferably, a backing plate is detachably connected to the lower end surface of the base plate.

[0013] Preferably, when the gap between the bottom plate and the top of the rail is greater than a set value, a pad is installed on the lower end surface of the bottom plate.

[0014] Beneficial effects:

[0015] In the rail clamp, the distance between the clamping ends of the two rail clamps is adjustable, so that it can be applied to various types of rails at the same time, and has wide applicability; it also has a simple structure, is easy to operate, and can be flexibly installed and disassembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 and Figure 2 The front and side views of the rail clamp of the present invention are shown;

[0017] Figure 3 This is a schematic diagram of the function of the rail clamp of the present invention and a 43kg / m steel rail;

[0018] Figure 4 This is a schematic diagram of the function of the rail clamp of the present invention and a 50kg / m steel rail;

[0019] Figure 5 This is a schematic diagram of the interaction between the rail clamp of the present invention and a 60kg / m steel rail.

[0020] Among them: 1-sliding nut, 2-limiting frame, 3-screw, 4-rail clamp, 5-limiting plate, 6-screw, 7-pin, 8-pad and 9-base plate. DETAILED DESCRIPTION

[0021] The present invention will be described in detail below with reference to the accompanying drawings.

[0022] This embodiment provides a multi-rail applicable rail clamp that can be simultaneously applied to various types of rails currently on my country's railways; it has a simple structure and is easy to operate.

[0023] like Figure 1 and Figure 2 As shown, the rail clamp is a manual screw type, comprising: a sliding nut 1, a limit frame 2, a screw 3, a rail clamp 4, a cover plate 5, a latch 7 and a base plate 9.

[0024] The upper end of the screw rod 3 is threadedly connected to the sliding nut 1, and the lower end extends into the groove of the base plate 9. The upper end surface of the base plate 9 is fixed to the limit plate 5 via screws 6, which is used to limit the screw rod 3 and prevent it from falling out of the base plate 9. The screw rod 3 and the sliding nut 1 form a screw-nut pair. When the screw rod 3 is rotated, the sliding nut 1 moves along the axis of the screw rod 3.

[0025] The two rail clamps 4 are symmetrically arranged relative to the screw rod 3. The lower ends of the rail clamps 4 serve as clamping ends for cooperating with the side surfaces of the rails to clamp the rails. For ease of description, the upper half of the rail clamps 4 (excluding the clamping ends) is the clamp body.

[0026] The sliding nut 1 and the left and right end surfaces of the base plate 9 are respectively provided with grooves for cooperating with the rail clamps 4; the upper ends of the clamp bodies of the two rail clamps 4 are respectively located in the grooves of the left and right end surfaces of the sliding nut 1, and interfere with the grooves on the sliding nut 1; the lower ends of the clamp bodies of the two rail clamps 4 are respectively located in the grooves of the left and right end surfaces of the base plate 9, and are pinned to the base plate 9 through the pin 7; the rail clamps 4 can rotate around the axis of the pin 7 to achieve the adjustment of the opening size of the clamping ends of the rail clamps 4 (that is, to adjust the distance between the clamping ends of the two rail clamps 4).

[0027] The opposing surfaces of the two rail clamps 4 are outwardly inclined, so that the distance between the two clamps 4 increases from top to bottom. Initially, the sliding nut 1 is located at the lower end of the screw rod 3. When the screw rod 3 is turned, causing the sliding nut 1 to move upward along the axis 2 of the screw rod 3, the sliding nut 1 pushes the two rail clamps 4 outward, causing the clamping ends of the two rail clamps 4 to rotate inward around the connected pin 7, thereby reducing the distance between the clamping ends of the two rail clamps 4. A limit frame 2 is welded to the position of each groove on the sliding nut 1. The limit frame 2 surrounds the rail clamps 4 (i.e., the rail clamps 4 are retained within the limit frame 2), preventing the upper end of the rail clamps 4 from disengaging from the groove of the sliding nut 1.

[0028] On the contrary, when the screw rod 3 is rotated in the opposite direction so that the sliding nut 1 moves downward along the axis 2 of the screw rod 3, the clamping ends of the two rail clamps 4 are loosened.

[0029] Figure 3 、 Figure 4 、 Figure 5 Schematic diagrams of the interaction between the rail clamp and 43kg / m, 50kg / m and 60kg / m rails respectively.

[0030] The operation process of the rail clamp is as follows:

[0031] When the locomotive stops, screw 3 is turned to make the rail clamp 4 fit tightly against the side of the rail. A pair of friction pairs is established through squeezing to prevent slipping, thereby locking the rail and ensuring that the locomotive does not move, thus preventing slipping. When the rail clamp acts on a 43kg / m rail, the gap between the base plate 9 and the top of the rail is large, and the rail clamp is prone to shaking. At this time, a pad 8 is installed on the lower surface of the base plate 9 and connected to the base plate 9 by screws. Pad 8 is removed when acting on 50kg / m and 60kg / m rails. When screw 3 is rotated in the opposite direction, the rail clamp is loosened and continues to rotate until the clamping surface of the rail clamp maintains a safe distance from the side of the rail. At this time, the locomotive can pass.

[0032] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-track applicable rail clamp, characterized in that: include: Sliding nut (1), screw (3), rail clamp (4), latch (7) and base plate (9); The upper end of the screw rod (3) is threadedly connected to the sliding nut (1), and the lower end is connected to the base plate (9); the screw rod (3) and the sliding nut (1) form a screw nut pair, and when the screw rod (3) is rotated, the sliding nut (1) moves along the axis of the screw rod (3); Two rail clamps (4) are symmetrically arranged relative to the screw rod (3), and the rail clamp (4) comprises a clamp body and a clamping end at the lower end of the clamp body, and the clamping end is used to cooperate with the side surface of the rail to clamp the rail; The positions of the two ends of the sliding nut (1) and the base plate (9) corresponding to the rail clamp (4) are respectively provided with grooves that match the rail clamp (4); the upper ends of the clamp bodies of the two rail clamps (4) are respectively located in the grooves on the left and right end surfaces of the sliding nut (1), and abut against the grooves on the sliding nut (1); the spacing between the clamp bodies of the two rail clamps (4) increases from top to bottom, and when the sliding nut (1) moves upward along the axis of the screw rod (3), the sliding nut (1) pushes the clamp bodies of the two rail clamps (4) outward; The lower ends of the two rail clamps (4) are respectively located in grooves on the left and right end surfaces of the base plate (9) and are pinned to the base plate (9) via a latch (7); the rail clamps (4) are capable of rotating around the axis of the latch (7); A limit frame (2) is provided at the position of the groove on the sliding nut (1), and the rail clamp (4) is located in the limit frame (2); The lower end surface of the bottom plate (9) is detachably connected to a backing plate (8).

2. The multi-track applicable rail clamp according to claim 1, characterized in that: The lower end of the screw rod (3) extends into the groove of the bottom plate (9), and the upper end surface of the bottom plate (9) is fixedly connected to a limiting plate (5) for limiting the screw rod (3).

3. The multi-track applicable rail clamp according to claim 1, characterized in that: When the gap between the bottom plate (9) and the top of the rail is greater than a set value, a backing plate (8) is installed on the lower end surface of the bottom plate (9).

4. The multi-track applicable rail clamp according to claim 1, characterized in that: The opposing surfaces of the clamp bodies of the two rail clamps (4) are inclined surfaces inclined outwards.

Images