Railway vehicle buffering type anti-slip fastener

Abstract

A buffering type anti-slip fastener for railway vehicles comprises a hook and a threaded rod, an annular blocking shoulder is arranged at the lower end of the threaded rod, the threaded rod is sleeved with a limiting sleeve and an elastic element, and the elastic element is located in an inner cavity of the limiting sleeve; the lower end of the limiting sleeve is fixedly connected with a hinge seat, and the elastic element is pressed above the annular retaining shoulder; a nut seat is connected to the screw rod, a clamping seat is hinged to the nut seat, a crank is connected to the upper end of the screw rod, and the tail end of the hook is horizontally hinged to the hinge seat. The utility model aims to overcome the defects in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of railway equipment, in particular to a buffer type anti-slip fastener for railway vehicles. Background Art

[0002] Anti-slip fasteners for railway vehicles are mainly used in stations to prevent parked freight cars from slipping away. Existing anti-slip fasteners are always prone to hook breakage during use. Once the hook breaks, the vehicle is prone to slipping away, resulting in slipping away accidents. The main reason for the hook breakage is that when the locomotive is connected to the vehicle, railway regulations require that the trailer be attached first and the anti-slip fastener be removed later. When the trailer is attached, the locomotive hits the vehicle, causing the anti-slip fastener to break. For example, the hook and the screw of "Railway Vehicle Anti-slip Fastener CN202222339834.8" are hard-connected. When the locomotive hits the vehicle when the trailer is attached, the anti-slip fastener is still in a braking state. When the impact force is too large, the anti-slip fastener will break from the connection between the hook and the screw, causing a vehicle slipping away accident. Utility Model Content

[0003] The utility model provides a buffer type anti-slip fastener for railway vehicles to overcome the shortcomings of the prior art.

[0004] The technical solution adopted by the utility model is: a buffer-type anti-slip fastener for railway vehicles, including a hook and a screw, the lower end of the screw is provided with an annular shoulder, a limit sleeve and an elastic element are sleeved on the screw, and the elastic element is located in the inner cavity of the limit sleeve; the lower end of the limit sleeve is fixedly connected to a hinge seat, and the elastic element is pressed onto the top of the annular shoulder; the screw is connected to a nut seat, and a clamping seat is hinged on the nut seat, the upper end of the screw is connected to a crank, and the tail end of the hook is horizontally hinged on the hinge seat.

[0005] The screw rod is also provided with a plane bearing, and the plane bearing is located between the annular shoulder and the elastic element.

[0006] The elastic element is a spring.

[0007] The upper end of the hinge seat has an internal thread countersink and the lower end has two ears. The limiting sleeve is threadedly connected to the internal thread countersink through the external thread at its lower end, and the annular shoulder is pressed into the internal thread countersink through an elastic element.

[0008] The lower end of the hinge seat is provided with two ears, and the tail end of the hook is horizontally hinged between the two ears through a pin.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] The utility model sets a spring on the screw rod, and when the anti-slip fastener is in a braking state, the hook tension spring is compressed, leaving a buffer stroke for the hook to retreat; when the trailer hits the vehicle, the hook retreats to form a buffer, preventing the hook from hard contact with the screw rod through the hinge seat, resulting in breakage of the connection between the hook and the screw, causing a vehicle slipping accident. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic cross-sectional view of the structure of the utility model;

[0012] Figure 2 It is a three-dimensional structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0013] The following is combined with Figure 1-2 The utility model is described in detail with specific implementation modes.

[0014] A buffer-type anti-slip fastener for railway vehicles, comprising a hook 1 and a screw rod 3, wherein the lower end of the screw rod 3 has an annular shoulder 3-1, a limit sleeve 4 and an elastic element 5 are sleeved on the screw rod 3, and the elastic element 5 is located in the inner cavity of the limit sleeve 4; the lower end of the limit sleeve 4 is fixedly connected to a hinge seat 2, and the elastic element 5 is pressed onto the top of the annular shoulder 3-1; the screw rod 3 is connected to a nut seat 6, and the nut seat 6 is hinged with a clamping seat 7, the upper end of the screw rod 3 is connected to a crank 9, and the tail end of the hook 1 is horizontally hinged to the hinge seat 2.

[0015] In one embodiment, in order to make the screw rotate flexibly, with less wear and longer service life, the screw 3 is also provided with a plane bearing 8, and the plane bearing 8 is located between the annular shoulder 3 - 1 and the elastic element 5 .

[0016] In one embodiment, the elastic element 5 is preferably a compression spring, and the elastic force of the compression spring after compression is greater than 1.1 KN to meet the railway industry standards.

[0017] In one embodiment, the upper end of the hinge seat 2 has an internal threaded countersunk hole 2-1 and the lower end has double ears 2-2. The limiting sleeve 4 is threadedly connected to the internal threaded countersunk hole 2-1 through the external thread 4-1 at its lower end, and the annular shoulder 3-1 is pressed into the internal threaded countersunk hole 2-1 through the elastic element 5.

[0018] In one embodiment, the lower end of the hinge seat 2 has two ears 2-2, and the tail end of the hook 1 is horizontally hinged between the two ears 2-2 through a pin.

[0019] When in use, adjust the nut seat 6 to be away from one end of the hook 1, rotate the hook 1 to the position where the opening is facing the handbrake chain ring, hook the handbrake chain ring, hook the handbrake seat through the slot 7-2 and the hook slot 7-1 on the seat 7, drive the screw 2 to rotate through the crank 9 to tighten the hook 1, and at the same time, the spring 5 is compressed to leave a buffer stroke for the hook 1 to retreat. When the trailer hits the vehicle, the hook 1 retreats to form a buffer to prevent the hook from hard contact with the screw through the hinge seat, resulting in a break in the connection between the hook and the screw, causing a vehicle runaway accident.

[0020] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, all equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A railway vehicle buffer type anti-slip fastener, comprising a hook (1) and a screw (3), characterized in that: The lower end of the screw rod (3) has an annular stop shoulder (3-1), and a limit sleeve (4) and an elastic element (5) are sleeved on the screw rod (3), and the elastic element (5) is located in the inner cavity of the limit sleeve (4); the lower end of the limit sleeve (4) is fixedly connected to a hinge seat (2), and the elastic element (5) is pressed onto the top of the annular stop shoulder (3-1); the screw rod (3) is connected to a nut seat (6), and a clamping seat (7) is hinged on the nut seat (6); the upper end of the screw rod (3) is connected to a crank (9), and the tail end of the hook (1) is horizontally hinged on the hinge seat (2).

2. The railway vehicle buffer type anti-slip fastener according to claim 1, characterized in that: The screw rod (3) is also provided with a plane bearing (8), and the plane bearing (8) is located between the annular shoulder (3-1) and the elastic element (5).

3. The railway vehicle buffer type anti-slip fastener according to claim 1 or 2, characterized in that: The elastic element (5) is a spring.

4. The railway vehicle buffer type anti-slip fastener according to claim 1, characterized in that: The hinge seat (2) has an internal threaded countersunk hole (2-1) at the upper end and two ears (2-2) at the lower end; the limiting sleeve (4) is threadedly connected to the internal threaded countersunk hole (2-1) via an external thread (4-1) at its lower end; and the annular stop shoulder (3-1) is pressed into the internal threaded countersunk hole (2-1) via an elastic element (5).

5. The railway vehicle buffer type anti-slip fastener according to claim 1, characterized in that: The lower end of the hinge seat (2) is provided with two ears (2-2), and the tail end of the hook (1) is horizontally hinged between the two ears (2-2) through a pin.

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