Cross-type rail grabbing device for railway

Abstract

The utility model provides a crossing type rail grabbing device for a railway, which relates to the technical field of railway construction and comprises a cross beam, two ends of the cross beam are respectively provided with a clamping jaw, and the near ends of the clamping jaws are rotatably connected with the cross beam. A first connecting rod is rotationally connected to the end of the cross beam, the middle of the first connecting rod is rotationally connected with the cross beam, a second connecting rod is arranged at the end, close to the clamping jaw, of the first connecting rod, one end of the second connecting rod is rotationally connected with the middle of the clamping jaw, and the other end of the second connecting rod is rotationally connected with the end, close to the clamping jaw, of the first connecting rod; an elastic piece is further arranged at the end of the cross beam, the first end of the elastic piece is movably connected with the cross beam, and the second end of the elastic piece is movably connected with the joint of the clamping jaw and the second connecting rod. By arranging the connecting rod mechanism, the clamping jaw can be locked by the connecting rod mechanism, so that the problems of movement and toppling of the box step caused by loosening of the clamping jaw in the construction process are solved.

Description

Technical Field

[0001] This utility model belongs to the field of rail transit technology, specifically relating to a cross-type rail gripper for railways. Background Technology

[0002] The overhead contact line ladder is a common tool used in railway overhead contact line maintenance. When performing overhead contact line maintenance, the overhead contact line ladder used for high-altitude operations needs to be equipped with anti-tipping devices, otherwise the ladder may move unexpectedly or even tip over.

[0003] To prevent the overhead contact system ladder from tipping over during operation, rail catchers are typically used to secure it. However, existing rail catchers are cumbersome to operate and prone to loosening, while railway overhead contact system maintenance is time-sensitive with a narrow window of opportunity. Therefore, existing rail catchers are ill-suited to the needs of overhead contact system maintenance.

[0004] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Summary of the Invention

[0005] The purpose of this utility model is to provide a cross-type rail grabber for railways to solve the problem of easy detachment during the operation of railway work ladders.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A transverse rail grabber for railways, comprising:

[0008] A crossbeam, with a pawl at each end, the proximal end of which is rotatably connected to the crossbeam;

[0009] The end of the crossbeam is rotatably connected to a first connecting rod, the middle of the first connecting rod is rotatably connected to the crossbeam, and a second connecting rod is provided at the end of the first connecting rod near the pawl. One end of the second connecting rod is rotatably connected to the middle of the pawl, and the other end of the second connecting rod is rotatably connected to the end of the first connecting rod near the pawl.

[0010] The end of the crossbeam is also provided with an elastic element. The first end of the elastic element is movably connected to the crossbeam, and the second end of the elastic element is movably connected to the connection between the claw and the second connecting rod.

[0011] Preferably, the first end of the elastic element is closer to the middle of the crossbeam than the connection point between the claw and the crossbeam.

[0012] Preferably, the two ends of the crossbeam are provided with claw seats, the claw seats are fixed relative to the crossbeam, and the claws and the first connecting rod are rotatably connected to the claw seats.

[0013] Preferably, the jaws and jaw seats are connected by a pin.

[0014] Preferably, the pin is provided with an insulating sleeve, and the pin and the claw are separated by the insulating sleeve.

[0015] Preferably, the claw seat is triangular, and the apex of the claw seat is connected to the crossbeam, the first connecting rod and the claw respectively.

[0016] Preferably, U-shaped pipe clamps are symmetrically arranged on the top of the crossbeam, and the axis of the U-shaped pipe clamps is perpendicular to the axis of the crossbeam.

[0017] Beneficial effects:

[0018] This utility model, by setting up a linkage mechanism and an elastic element, uses the first linkage and the elastic element to apply a pulling force to the inside of the crossbeam to the claw, so that the claw can be locked by the linkage mechanism, thereby avoiding the problem of the ladder moving or tipping over due to the claw loosening during construction.

[0019] The pins used to connect the jaws and jaw seats are connected by insulating sleeves, which insulates and isolates the jaws from other parts, thus improving safety. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. Wherein:

[0021] Figure 1 A perspective view of a railway cross-type rail grabber provided for an embodiment of this utility model.

[0022] Figure 2 for Figure 1 A three-dimensional view of the end of the middle crossbeam.

[0023] Figure 3 for Figure 1 Top view of the end of the middle crossbeam.

[0024] In the diagram: 1. Crossbeam; 2. Claw; 3. First connecting rod; 4. Second connecting rod; 5. Claw seat; 6. Elastic element; 7. Pin; 8. Insulating sleeve. Detailed Implementation

[0025] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art are within the protection scope of this utility model.

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" and "second" may explicitly or implicitly include one or more features.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection or a connection that can communicate with each other; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two elements, an indirect connection, or an interaction between two elements.

[0030] The present invention will now be described in detail with reference to the embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0031] This utility model addresses the problems of cumbersome operation and loosening of rail grippers in current overhead contact line operation ladders by providing a transverse rail gripper for railways, such as... Figures 1-3 As shown, the rail grabber includes a crossbeam 1, which is in the shape of a straight line and its length is slightly greater than the width of the railway track. It is used to cross the railway track. Each end of the crossbeam 1 is provided with a claw 2. The near end of the claw 2 is rotatably connected to the crossbeam 1 and the claw 2 can rotate in the vertical plane. The far end of the claw 2 is bent into a hook shape towards the middle of the crossbeam 1 to hook the edge of the rail and fix the crossbeam 1 on the railway track.

[0032] like Figure 2 , 3As shown, a first connecting rod 3 is rotatably connected to the end of the crossbeam 1. The middle part of the first connecting rod 3 is rotatably connected to the crossbeam 1. A second connecting rod 4 is provided at the end of the first connecting rod 3 near the pawl 2. One end of the second connecting rod 4 is rotatably connected to the middle part of the pawl 2, and the other end of the second connecting rod 4 is rotatably connected to the end of the first connecting rod 3 near the pawl 2.

[0033] In addition, U-shaped pipe clamps are symmetrically arranged on the top of the crossbeam 1. The axis of the U-shaped pipe clamps is perpendicular to the axis of the crossbeam 1, and is used to install the crossbeam 1 on the chassis of the vehicle ladder.

[0034] With the above settings, rotating the first connecting rod 3 can drive the chuck 2 to rotate around its axis, thereby moving closer to or away from the railway track, realizing the switching between "clamping → relaxing" states. When the chuck 2 is in the clamping state, the far end of the chuck 2 hooks onto the edge of the rail, fixing the crossbeam 1 to the railway track. When the chuck 2 is in the relaxing state, the far end of the chuck 2 disengages from the edge of the rail, allowing the crossbeam 1 to detach from or slide off the rail.

[0035] More specifically, the two ends of the crossbeam 1 are provided with claw seats 5. The claw seats 5 are fixed relative to the crossbeam 1 and can be fixed to the crossbeam 1 by means of bolts, welding, riveting, etc. The claw 2 and the first connecting rod 3 are rotatably connected to the claw seats 5. The claw seats 5 are triangular in shape, and the apex of the claw seats 5 are connected to the crossbeam 1, the first connecting rod 3 and the claw 2 respectively. By setting the triangular claw seats 5, the longitudinal distance between the rotation axis of the first connecting rod 3 and the claw 2 is increased, which makes it easier to adjust the opening angle of the claw 2 through the first connecting rod 3.

[0036] The end of the crossbeam 1 is also provided with an elastic element 6, which is a spring. The first end of the elastic element 6 is movably connected to the crossbeam 1, and the second end of the elastic element 6 is movably connected to the connection point of the pawl 2 and the second connecting rod 4. The first end of the elastic element 6 is closer to the middle of the crossbeam 1 than the connection point of the pawl 2 and the crossbeam 1. By setting the elastic element 6, the pawl 2 is pulled towards the middle of the crossbeam 1 and tends to be kept in a clamped state. When no external force is applied to the upper end of the first connecting rod 3, the pawl 2 can always clamp the rail and prevent the pawl 2 from coming off the rail.

[0037] In a preferred embodiment of this utility model, in order to avoid the crossbeam 1 forming a conductive path with the rail, the claw 2 and the claw seat 5 are connected by a pin 7, and an insulating sleeve 8 is provided on the pin 7, so that the pin 7 and the claw 2 are separated by the insulating sleeve 8, thereby electrically insulating the claw 2 and the crossbeam 1 and improving the safety of railway catenary operation.

[0038] When performing railway catenary work using a ladder, after moving the ladder to the work area, release the first link 3 so that the pawl 2 can bite the two rails. At this time, the pin 7 is located outside the second link 4. The pawl 2 cannot rotate outward on its own under the action of external force. Only by pulling the first link 3 to move the second link 4 to the outside of the pin 7 can the pawl 2 be pulled upward under the action of the second link 4, so that the pawl 2 can disengage from the rail.

[0039] In summary:

[0040] This invention utilizes a linkage mechanism and an elastic element 6 to apply a pulling force to the inside of the crossbeam 1 using the first linkage 3 and the elastic element 6, thereby locking the claw 2 in place and preventing the ladder from moving or tipping over due to the claw 2 coming loose during construction. In addition, the pin 7 used to connect the claw 2 and the claw seat 5 is connected by an insulating sleeve 8, which insulates the claw 2 from other parts and improves safety.

[0041] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A transverse rail gripper for railways, characterized in that, include: A crossbeam, with a pawl at each end, the proximal end of which is rotatably connected to the crossbeam; The end of the crossbeam is rotatably connected to a first connecting rod, the middle of the first connecting rod is rotatably connected to the crossbeam, and a second connecting rod is provided at the end of the first connecting rod near the pawl. One end of the second connecting rod is rotatably connected to the middle of the pawl, and the other end of the second connecting rod is rotatably connected to the end of the first connecting rod near the pawl. The end of the crossbeam is also provided with an elastic element. The first end of the elastic element is movably connected to the crossbeam, and the second end of the elastic element is movably connected to the connection between the claw and the second connecting rod.

2. The railway transverse rail grabber according to claim 1, characterized in that, The first end of the elastic element is closer to the middle of the crossbeam than the connection point between the claw and the crossbeam.

3. A transverse rail grabber for railways according to claim 1, characterized in that, The crossbeam is provided with claw seats at both ends. The claw seats are fixed relative to the crossbeam, and the claws and the first connecting rod are rotatably connected to the claw seats.

4. A transverse rail grabber for railways according to claim 3, characterized in that, The jaws and jaw seats are connected by a pin.

5. A transverse rail grabber for railways according to claim 4, characterized in that, An insulating sleeve is provided on the pin, and the pin and the chuck are separated by the insulating sleeve.

6. A transverse rail grabber for railways according to claim 3, characterized in that, The claw seat is triangular, and its apex is connected to the crossbeam, the first connecting rod, and the claw, respectively.

7. A railway transverse rail grabber according to any one of claims 1 to 6, characterized in that, U-shaped pipe clamps are symmetrically arranged on the top of the crossbeam, and the axis of the U-shaped pipe clamps is perpendicular to the axis of the crossbeam.

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