CN211848074U

CN211848074U - Steel rail heel clamping tool

Info

Publication number: CN211848074U
Application number: CN202020335654.0U
Authority: CN
Inventors: 任伟伟; 王磊; 郑会锋; 高尚君; 付涛
Original assignee: China Railway Baoji Bridge Group Co Ltd
Current assignee: China Railway Baoji Bridge Group Co Ltd
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-11-03
Anticipated expiration: 2030-03-17

Abstract

The utility model relates to a rail heel clamping tool which can fix one end of a rail and enable the other end to be in a state of moving up and down, and the rail heel clamping tool comprises a clamping plate, a bottom plate, a rail, a vertical plate and a flat plate; the splint welding is on the web of rail, and two riser lower extremes constitute U style of calligraphy structures with dull and stereotyped connection respectively, and the non-welded web of rail region of rail has the hole that supplies the screw rod to pass, and screw rod one end passes the hole, and the screw rod both ends are supported and the screw rod both ends adopt packing ring and nut location respectively by the bearing inner circle of inlaying in the riser respectively. The advantages are that: the tool fixes one end of the steel rail and enables the other end of the steel rail to be in a vertically movable state by clamping the rail web and the rail bottom, so that the situation that clamping end clamping plates are burnt to cause the lower jaw of the rail head to be damaged due to short-time stop at the end can be avoided in the steel rail quenching process, and the quality of the quenched steel rail is stabilized.

Description

Steel rail heel clamping tool

Technical Field

The utility model relates to a can make the one end of rail fixed and the other end be in rail heel end centre gripping frock of upper and lower movable state, belong to rail heel end centre gripping frock and make the field.

Background

In the prior art, some steel rails need to be subjected to off-line heat treatment, namely quenching before being used, so that the hardness of the rail head of the steel rail is improved, the wear resistance of the steel rail is improved, and the service life of the steel rail is prolonged. However, since the steel rail is locally heated and bent during quenching, one end of the steel rail needs to be fixed and the other end of the steel rail needs to be movable up and down during quenching on a quenching machine tool. The rail needs to stay for a short time of 10-30s at the beginning and end of the quenching to burn through the part. The existing tool fixes one end of the steel rail by clamping the rail head of the steel rail, so that when the clamped end stays, the clamped tool clamping plate is easy to burn or even partially slightly melt, and the burnt part is just in contact with the lower jaw of the rail head of the steel rail, so that the lower jaw of the rail head of the steel rail is damaged.

Disclosure of Invention

The design purpose is as follows: the defects in the background technology are avoided, and the steel rail heel clamping tool capable of enabling one end of the steel rail to be fixed and the other end of the steel rail to be in a vertically movable state is designed.

The design scheme is as follows: in order to achieve the above design objectives. The utility model discloses a rail bottom of centre gripping rail position reaches fixed rail one end, and the other end is in mobile state from top to bottom, does benefit to the implementation that the rail quenches, avoids producing the condition appearance that railhead chin is burnt, reaches the purpose of stabilizing rail quenching quality. In structural design, the rail heel end clamping tool is mainly characterized in that the rail bottom and the rail web of the steel rail are fixed through the clamping plate, the clamping plate is welded on the rail web of the steel rail, and the bottom plate is welded on the rail bottom part of the steel rail. The two clamping plates are similar in shape and are symmetrically manufactured, and the welding surface and the rail to be welded have similar curved surface shapes at the rail web part, so that the two clamping plates are convenient to mount, weld and clamp. The steel rail is a non-used steel rail, one end of the steel rail is obliquely milled to form a slope of 20-45 degrees from bottom to top, so that a subsequent tool can conveniently rotate along the screw, holes are formed in the rail web non-welding area of the steel rail, the steel rail is relatively fixed with the nearby base through the screw (the diameter of the screw is smaller than that of the holes), and the other end of the steel rail can move up and down along the screw. The steel rail end part is welded with a hanging ring, so that the tool is convenient to carry. The vertical plate and the flat plate are welded to form a base. The clamping plate and the corner at one side of the bottom plate are chamfered properly, so that the steel rail to be quenched is conveniently and smoothly fixed in the tool. The vertical plate is provided with a flat strip-shaped hole which is beneficial to installation and the front and back movement of the main structure of the tool.

The technical scheme is as follows: a steel rail heel clamping tool comprises a clamping plate, a bottom plate, a steel rail, a vertical plate and a flat plate; the splint welding is on the web of rail, and two riser lower extremes constitute U style of calligraphy structures with dull and stereotyped connection respectively, and the non-welded web of rail region of rail has the hole that supplies the screw rod to pass, and screw rod one end passes the hole, and the screw rod both ends are supported and the screw rod both ends adopt packing ring and nut location respectively by the bearing inner circle of inlaying in the riser respectively.

Compared with the prior art, the utility model, this frock makes the one end of rail fixed and the other end is in movable state from top to bottom through the centre gripping to the web of a rail and the rail end to thereby can avoid in rail quenching process to stop at the end for a short time and the centre gripping splint that cause appear by the condition that burn made railhead chin by the injury, stabilized the quality of quenching rail.

Drawings

Fig. 1 is an overall schematic view of the tool.

Fig. 2 is a cross-sectional view of fig. 1.

Fig. 3 is a schematic front view of the tooling without the base.

Fig. 4 is a schematic top view of fig. 3.

Fig. 5 is a schematic sectional view of the portion B-B in fig. 4.

Fig. 6 is a front view of the splint.

Fig. 7 is a schematic top view of fig. 6.

Fig. 8 is a schematic sectional view of the portion a-a in fig. 6.

Detailed Description

Example 1: reference is made to figures 1-8 of the drawings. A steel rail heel clamping tool is composed of clamping plates 8 and 9, a bottom plate 10, a steel rail 1, a vertical plate 6 and a flat plate 7; splint 8 and 9 welding are on the web of rail 1, and 6 lower extremes of two risers are connected with dull and stereotyped 7 respectively and constitute U style of calligraphy structure, and 1 non-welded web of rail region has the hole that supplies the screw rod to pass, and 3 one ends of screw rod pass the hole, and 3 both ends of screw rod are supported by 2 inner circles of bearing that inlay respectively in

riser

6 and 3 both ends of screw rod adopt packing ring 5 and nut 4 location respectively. The diameter of the screw rod 3 is smaller than that of the hole, so that the other end of the steel rail can move up and down along the screw rod. One end of the steel rail 1 is obliquely milled at a slope of 20-45 degrees from bottom to top. A hanging ring 11 is welded at the end part of the steel rail 1. The vertical plate 6 is provided with a flat strip-shaped hole which is beneficial to installation and the front and back movement of the main structure of the tool. The manufacturing method comprises the following steps: the rail bottom and the rail web of the steel rail 1 are fixed through the clamping plates 8 and 9, the clamping plates 8 and 9 are welded on the rail web of the steel rail, the bottom plate 10 is welded on the rail bottom part of the steel rail, the two clamping plates are similar in shape and are symmetrically manufactured, and the welding surface and the steel rail to be welded have similar curved surface shapes on the rail web part, so that the installation, welding and clamping are facilitated.

The using method comprises the steps that one end of a steel rail 12 to be quenched extends into a gap formed by the clamping plates 8 and 9 and the bottom plate 10 of the tool, the gap formed by the clamping plates 8 and 9 and the bottom plate 10 wraps the rail bottom and the rail bottom triangular area of the steel rail to be quenched, and the clamping plates 8 and 9 clamp the rail web of the steel rail 12 to be quenched, so that the steel rail 12 to be quenched cannot shake left and right; the clamping plates 8 and 9 and the bottom plate 10 clamp the rail bottom of the rail to be quenched, so that the rail to be quenched cannot freely move up and down. Because the hole is punched in the non-welding area of the rail web of the steel rail and the screw rod is relatively fixed with the base beside the steel rail, and meanwhile, the diameter of the screw rod is smaller than that of the hole, the other end of the steel rail can move up and down along the screw rod, the implementation of quenching of the steel rail is facilitated, the condition that the jaw of a rail head is burnt is avoided, and the lifting ring welded at the end part of the steel rail facilitates the carrying of the tool.

It is to be understood that: although above-mentioned embodiment is right the utility model discloses a design has done more detailed word description, but these word descriptions, are only right the utility model relates to a simple word description of idea, rather than right the utility model relates to a restriction of idea, any do not surpass the utility model relates to a combination, increase or the modification of idea all fall into the utility model discloses a within the protection scope.

Claims

1. A steel rail heel clamping tool is characterized by comprising clamping plates (8 and 9), a bottom plate (10), a steel rail (1), a vertical plate (6) and a flat plate (7); splint (8, 9) welding are on the web of rail (1), and two riser (6) lower extremes are connected with dull and stereotyped (7) respectively and are constituted U style of calligraphy structures, and rail (1) non-welded web of rail region has the hole that supplies the screw rod to pass, and screw rod (3) one end passes the hole, and screw rod (3) both ends are supported and screw rod (3) both ends adopt packing ring (5) and nut (4) location respectively by bearing (2) inner circle that inlays in riser (6).

2. The steel rail heel clamping tool according to claim 1, which is characterized in that: the diameter of the screw rod (3) is smaller than that of the hole, so that the other end of the steel rail can move up and down along the screw rod.

3. The steel rail heel clamping tool according to claim 1, which is characterized in that: one end of the steel rail (1) is obliquely milled at a slope of 20-45 degrees from bottom to top.

4. The steel rail heel clamping tool according to claim 1, which is characterized in that: a hanging ring (11) is welded at the end part of the steel rail (1).

5. The steel rail heel clamping tool according to claim 1, which is characterized in that: the vertical plate (6) is provided with a flat strip-shaped hole which is beneficial to installation and the front and back movement of the main structure of the tool.