Locomotive grab rail adjusting tool

Abstract

The locomotive grab rail adjusting tool comprises an upper die and a lower die, a sinking groove is formed in the lower end face of the upper die, an upper semicircular groove is formed in the bottom face of the sinking groove, the lower die is matched with the sinking groove, a lower semicircular groove is formed in the position, opposite to the upper semicircular groove, of the upper end face of the lower die, and the upper semicircular groove and the lower semicircular groove form a round hole with the same outer diameter as a grab rail. A counter bore is formed in the upper end face of the lower die, and a spring capable of abutting against the bottom face of the sinking groove is arranged in the counter bore. Through extrusion of the upper die and the lower die, the deformed position of the locomotive grab rail is extruded in the round hole of the tool, the deformed position is forced to be shaped and deformed, the original shape is recovered, and therefore rapid correction of the deformed locomotive grab rail is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe adjustment, in particular to a tool for adjusting a locomotive handrail. Background Art

[0002] During the maintenance process of locomotives, the handrails are often bent or flattened due to external forces. The existing repair methods are oxyacetylene flame or hand hammer correction. Since the handrails are made of stainless steel pipes with an outer diameter of 32mm, it is extremely difficult to control with flame adjustment, and the color change on the surface is troublesome to deal with later; hand hammer correction can easily cause dents on the surface of the stainless steel pipe. At present, there is no effective correction tool, and most cases are directly updated, resulting in increased maintenance costs. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model provides a motorcycle handrail adjustment tool.

[0004] The utility model adopts the following technical solution to solve the above-mentioned technical problems: a locomotive handrail adjustment tool, comprising an upper die and a lower die, the lower end face of the upper die is provided with a countersunk groove, the bottom face of the countersunk groove is provided with an upper semicircular groove, the lower die cooperates with the countersunk groove, the upper end face of the lower die is provided with a lower semicircular groove relative to the upper semicircular groove, the upper semicircular groove and the lower semicircular groove form a circular hole with the same outer diameter as the handrail, the upper end face of the lower die is provided with a countersunk hole, and a spring capable of resisting the bottom face of the countersunk groove is provided in the countersunk hole.

[0005] As a preferred solution, the cross section of the sink is an isosceles trapezoid, and the cross section of the lower mold is also an isosceles trapezoid.

[0006] As a preferred solution, the sink has a first inclined surface, and the lower mold has a second inclined surface matching the first inclined surface.

[0007] As a preferred solution, there are four countersunk holes, and the four countersunk holes are grouped in pairs, and the two groups of countersunk holes are respectively located on both sides of the lower semicircular groove.

[0008] As a preferred solution, the upper semicircular groove has an upper semicircular surface, and both sides of the upper semicircular surface are connected to the bottom surface of the sink through a first arc respectively.

[0009] As a preferred solution, the lower semicircular groove has a lower semicircular surface, and both sides of the lower semicircular surface are connected to the upper end surface of the lower mold through second arcs.

[0010] The beneficial effects of the present application are as follows: 1. The upper semicircular groove and the lower semicircular groove of the present application form a circular hole with the same outer diameter as the handrail rod. Through the extrusion of the upper die and the lower die, the deformed locomotive handrail rod is extruded in the circular hole of the tooling, forcing it to deform plastically and restore its original shape, thereby realizing rapid correction of the deformed locomotive handrail rod. The tooling is simple and easy to operate, suitable for small-batch maintenance operations, improving maintenance efficiency and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 for Figure 1 Side view of

[0013] Figure 3 It is a structural schematic diagram of the upper mold of the utility model;

[0014] Figure 4 It is a structural schematic diagram of the lower mold of the utility model;

[0015] Figure 5 This is a schematic diagram of the use state of the utility model;

[0016] Figure 6 It is a schematic structural diagram of the first circular arc and the second circular arc of the utility model.

[0017] Markings in the figure: 1. upper die, 11. upper semicircular groove, 111. upper semicircular surface, 112. first arc, 12. countersunk groove, 121. first inclined surface, 2. lower die, 21. lower semicircular groove, 211. lower semicircular surface, 212. second arc, 22. countersunk hole, 23. second inclined surface, 3. spring, 4. pressing head. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that in the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0019] See also Figure 1-6The utility model embodiment provides a locomotive handrail adjustment tool, including an upper mold 1 and a lower mold 2. The lower end surface of the upper mold 1 is provided with a sink groove 12, and the bottom surface of the sink groove 12 is provided with an upper semicircular groove 11. The lower mold 2 cooperates with the sink groove 12. The upper end surface of the lower mold 2 is provided with a lower semicircular groove 21 relative to the upper semicircular groove 11. The upper semicircular groove 11 and the lower semicircular groove 21 form a circular hole with the same outer diameter as the handrail. The upper end surface of the lower mold 2 is provided with a sink hole 22, and the sink hole 22 is provided with a spring 3 that can resist the bottom surface of the sink groove 12.

[0020] The spring 3 is used to lift the upper die 1 to form a gap to facilitate the sliding of the handrail in the hole. The cross section of the sink 12 is an isosceles trapezoid, and the cross section of the lower die 2 is also an isosceles trapezoid. The sink 12 has a first inclined surface 121, and the lower die 2 has a second inclined surface 23 that matches the first inclined surface 121. There are four countersunk holes 22, and the four countersunk holes 22 are grouped in pairs. The two groups of countersunk holes 22 are respectively located on both sides of the lower semicircular groove 21. It should be noted that the parts not described in detail in this application are not prior art.

[0021] Specifically, the angle between the first inclined surface 121 and the horizontal is equal to the angle between the second inclined surface 23 and the horizontal, the lower mold 2 partially extends into the sink 12, and when the upper mold 1 and the lower mold 2 are pressed together, the upper end surface of the lower mold 2 abuts against the bottom surface of the sink 12.

[0022] During operation, first place the handrail rod to be adjusted in the lower semicircular groove 21 of the lower die 2, and buckle the upper die 1. At this time, the upper end of the spring 3 is against the bottom surface of the sink groove 12, and the high point of the bent or flattened part of the handrail rod is facing upward. Use the ram 4 of the press to press down the upper die 1. Since the cross-section of the sink groove 12 is an isosceles trapezoid, the cross-section of the lower die 2 is also an isosceles trapezoid, and the second inclined surface 23 is in contact with the first inclined surface 121. Due to the guiding effect of the second inclined surface 23, the upper die 1 is in contact with the lower die 2. At this time, the upper semicircular groove 11 and the lower semicircular groove 21 form a circular hole. Since the aperture of the circular hole is the same as the outer diameter of the handrail rod, the deformed handrail rod is forced to undergo plastic deformation in the circular hole and restore its original shape.

[0023] Of course, the present invention is not limited to the above-described implementations. Several other implementations based on the design concept of the present invention are provided below.

[0024] For example, in other embodiments, different from the above-described embodiments, Figure 6 As shown, the upper semicircular groove 11 has an upper semicircular surface 111 , and both sides of the upper semicircular surface 111 are connected to the bottom surface of the sink 12 through first arcs 112 .

[0025] The lower semicircular groove 21 has a lower semicircular surface 211 , and two sides of the lower semicircular surface 211 are connected to the upper end surface of the lower mold 2 through second arcs 212 .

[0026] It should be noted that the above embodiments are only used to illustrate the present utility model, but the present utility model is not limited to the above embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model fall within the protection scope of the present utility model.

Claims

1. A locomotive handrail adjustment tool, characterized in that: The utility model comprises an upper die (1) and a lower die (2), wherein a sink groove (12) is provided on the lower end surface of the upper die (1), an upper semicircular groove (11) is provided on the bottom surface of the sink groove (12), the lower die (2) cooperates with the sink groove (12), a lower semicircular groove (21) is provided on the upper end surface of the lower die (2) opposite to the upper semicircular groove (11), the upper semicircular groove (11) and the lower semicircular groove (21) form a circular hole with the same outer diameter as the handrail rod, and a sink hole (22) is provided on the upper end surface of the lower die (2), and a spring (3) capable of abutting against the bottom surface of the sink groove (12) is provided in the sink hole (22).

2. The motorcycle handrail adjustment tool according to claim 1, characterized in that: The cross section of the sink (12) is an isosceles trapezoid, and the cross section of the lower die (2) is also an isosceles trapezoid.

3. The motorcycle handrail adjustment tool according to claim 1, characterized in that: The sink (12) has a first inclined surface (121), and the lower mold (2) has a second inclined surface (23) matching the first inclined surface (121).

4. The motorcycle handrail adjustment tool according to claim 1, characterized in that: There are four countersunk holes (22), and the four countersunk holes (22) are grouped in pairs. The two groups of countersunk holes (22) are respectively located on both sides of the lower semicircular groove (21).

5. The motorcycle handrail adjustment tool according to claim 1, characterized in that: The upper semicircular groove (11) has an upper semicircular surface (111), and two sides of the upper semicircular surface (111) are respectively connected to the bottom surface of the sink (12) through first arcs (112).

6. The motorcycle handrail adjustment tool according to claim 1, characterized in that: The lower semicircular groove (21) has a lower semicircular surface (211), and two sides of the lower semicircular surface (211) are respectively connected to the upper end surface of the lower mold (2) through second arcs (212).

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