CN212020087U - Rail bottom milling processing tool of rail - Google Patents

Abstract

The utility model relates to a rail bottom milling processing jig for a steel rail, which comprises a worktable, one end of the worktable is fixedly provided with a fixed splint along its length direction, and the other end of the worktable is provided with a plurality of first hydraulic The cylinder and the first hydraulic cylinder are arranged horizontally, and their piston rods are all facing the direction of the fixed splint and are fixedly connected with the movable splint. The opposite sides of the blocks are matched with the rail waists of the corresponding steel rails, and height-adjustable support plates are provided at positions close to the positioning blocks on the fixed splint on both ends of the worktable in the length direction. The utility model utilizes the first hydraulic cylinder to provide the clamping force, and cooperates with the corresponding positioning blocks to firmly clamp the steel rail from the two rail waists of the steel rail. The clamping of the rail is flexible and convenient to use, which can greatly improve the milling quality of the rail bottom.

Description

A rail bottom milling processing jig for steel rails

technical field

The utility model belongs to the technical field of rail production and processing, in particular to a rail bottom milling processing fixture for a rail.

Background technique

The steel rail is the main component of the railway track. Its function is to guide the wheels of the rolling stock to move forward, bear the huge pressure of the wheels, and transmit them to the sleepers. The rails must provide a continuous, smooth and least-resistance rolling surface for the wheels. In electrified railways or automatic blocking sections, the rails can also double as track circuits. The section shape of the rail adopts the I-shaped section with the best bending resistance, which is composed of three parts: the rail head, the rail waist and the rail bottom. In the production and manufacture of existing rails, generally after the rail head and rail waist are processed and formed, the rail bottom plane is milled to ensure the level of the finished rail bottom. However, when milling the rail bottom of the rail, the conventional jig cannot effectively position and clamp the rail, especially the pressure surface of the existing positioning jig is not suitable for the rail waist, and the pressure area is small, and manual operation is often used. Adjusting the pressure is inconvenient to operate, the clamping force is insufficient and not balanced, and the rail cannot be effectively clamped and fixed from both sides of the rail waist, so that the rail is prone to vibration, skew and other problems during the milling process, thus affecting the milling of the rail bottom. effect and machining accuracy, and cause a certain wear on the rail waist, which greatly reduces the quality of the finished rail, which needs to be improved.

Utility model content

In view of this, the purpose of the present utility model is to provide a rail bottom milling processing jig for rails, which utilizes the first hydraulic cylinder to provide a balanced and sufficient clamping force, and utilizes a suitable positioning block to provide a suitable pressing surface, which can The damage to the rail waist of the rail is greatly reduced, the stability of the positioning and clamping of the rail is improved, and the milling quality of the rail bottom is guaranteed to solve the above problems.

In order to achieve the above purpose, the technical scheme adopted by the present invention is as follows: a rail bottom milling processing jig for a steel rail, comprising a workbench, one end of the workbench is fixedly provided with a fixed splint along its length direction, and the workbench The other end of the upper end is provided with a plurality of first hydraulic cylinders at intervals along the length direction of the fixed frame. The first hydraulic cylinders are arranged horizontally, and their piston rods are all facing the direction of the fixed splint and are fixedly connected with a movable splint. The upper parts of the opposite sides of the splint are detachably connected with positioning blocks along its length direction, the opposite sides of the two positioning blocks are matched with the rail waists of the corresponding steel rails, and the two ends of the worktable in the length direction are close to the positioning blocks on the fixed splint. There are height-adjustable support plates at all positions.

Preferably, the upper parts of the opposite sides of the movable splint and the fixed splint are provided with inserts, the inserts are T-shaped and arranged along the length direction of the corresponding splints, the inserts on the two splints are oppositely arranged, and the inserts on a single splint The strips are arranged in two groups that are arranged side by side up and down, the opposite sides of the two positioning blocks are provided with slots that are adapted to the corresponding inserts, and the positioning blocks are connected with the inserts on the corresponding splint through the slots. .

Preferably, a second hydraulic cylinder is vertically fixed on the worktable below the support plate, and the piston rod of the second hydraulic cylinder faces upward and is fixedly connected to the bottom of the corresponding support plate.

Preferably, a plurality of reinforcing rib plates are arranged between the side surface of the fixed splint away from the movable splint and the side table, and the reinforcing rib plates are evenly spaced along the length direction of the fixed splint.

Preferably, there is a gap between the bottom of the movable splint and the worktable.

Preferably, a rubber pad is provided on the outer surface of the positioning block.

The beneficial effects of the utility model are as follows: the utility model has a reasonable design and a simple structure, and the movable splint and the positioning block on it can be driven to move back and forth by using a plurality of first hydraulic cylinders to expand and contract synchronously, so as to cooperate with the fixed splint to complete the positioning of the rail. Clamping, the clamping force provided is balanced, stable and sufficient, which is more convenient and quicker than the operation when the pressure is manually adjusted, which can greatly improve the stability of the positioning and clamping of the rail; the two positioning blocks adapted to the rail waist Setting, can better match the positioning and fixing of the rail, expand the pressure area, and can more comprehensively cooperate with the rail waist of the rail to apply pressure, and the rubber pad on the positioning block makes the positioning and clamping of the rail more reliable. It is stable, reduces the damage to the rail waist of the rail, avoids the vibration and skew of the rail during the milling process, ensures the milling effect and machining accuracy of the rail bottom, and is conducive to improving the quality of the finished rail; the positioning block passes through the slot and the corresponding splint. The detachable insertion of the inserts makes the disassembly and replacement of the positioning block more convenient, which is conducive to improving the processing efficiency, and is convenient to complete the positioning, clamping and milling of various rails with different rail waists. It has a wide range of applications and is conducive to Improve the flexibility and convenience of the device. In addition, the arrangement of two height-adjustable support plates can cooperate with different rails to play an auxiliary supporting role, so that the positioning and fixing of the rails and the milling process are smoother and more stable, further reducing the vibration during processing, and improving the accuracy of the rails. The machining accuracy and machining quality of the bottom.

Description of drawings

Fig. 1 is the front view structure schematic diagram when the utility model is not working;

Fig. 2 is the top view structure schematic diagram when the utility model is not working;

Fig. 3 is the front view structure schematic diagram of the positioning block and the movable splint of the present invention;

Fig. 4 is the front view structure schematic diagram of the utility model when working.

Labels in the figure: 1 is the workbench, 2 is the reinforcing rib, 3 is the fixed splint, 4 is the insert, 5 is the slot, 6 is the positioning block, 7 is the rubber pad, 8 is the movable splint, and 9 is the first hydraulic pressure Cylinder, 10 is a support plate, 11 is a second hydraulic cylinder, 12 is a rail.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail:

As shown in FIGS. 1 to 4 , a rail bottom milling processing jig for a steel rail includes a worktable 1 . A fixed splint 3 is fixed on one end of the worktable 1 along its length direction. The other end of the worktable 1 is provided with several first hydraulic cylinders 9 at intervals along the length direction of the fixed frame. A positioning block 6 is detachably connected to the upper parts of the opposite sides of the movable splint 8 and the fixed splint 3 along the length direction thereof. The opposite sides of the two positioning blocks 6 are adapted to the rail waists of the corresponding steel rails 12 . When in use, the plurality of first hydraulic cylinders 9 can be operated synchronously by means of synchronous motors, etc., to achieve synchronous expansion and contraction, which can drive the movable splint 8 and the positioning block 6 on it to move back and forth, so as to cooperate with the fixed splint 3 to complete the positioning of the rail 12. Clamping, the provided clamping force is balanced, stable and sufficient, which is more convenient and quicker than the operation when the pressure is manually adjusted, and can greatly improve the stability of the positioning and clamping of the rail 12 . The two positioning blocks 6 adapted to the rail waist of the steel rail can better match the positioning and fixation of the steel rail 12, expand the pressure area, and can more comprehensively cooperate with the rail waist of the steel rail 12 to apply pressure, so that the positioning and clamping of the steel rail 12 It is more reliable and stable, reduces the damage to the rail waist of the rail 12, avoids vibration and skewing of the rail 12 during the milling process, ensures the milling effect and machining accuracy of the rail bottom, and is conducive to improving the quality of the finished product of the rail 12. The detachable connection between the positioning block 6 and the corresponding splint can replace different positioning blocks 6 according to the actual situation, which is convenient to cooperate to complete the positioning, clamping and milling of various rails 12 with different rail waists. Flexibility and ease of use of the device. Both ends of the workbench 1 in the length direction are provided with height-adjustable support plates 10 at positions close to the positioning blocks 6 on the fixed splint 3, which can cooperate with different steel rails 12 to play an auxiliary supporting role, so that the steel rails 12 The positioning and fixing and the milling process are more smooth and stable, which further reduces the vibration during the processing and improves the processing accuracy and processing quality of the rail bottom of the rail 12.

In this embodiment, the upper parts of the opposite sides of the movable splint 8 and the fixed splint 3 are provided with inserts 4, the inserts 4 are T-shaped and arranged along the length direction of the corresponding splint, and the inserts 4 on the two splints are oppositely arranged and single The inserts 4 on the splint are arranged in two groups arranged side by side up and down, and the opposite sides of the two positioning blocks 6 are provided with slots 5 that are adapted to the corresponding inserts 4, so that the positioning blocks 6 can pass through the slots 5 and the corresponding inserts 5. The inserts 4 on the splint are connected to each other. In actual use, if the rail waist of the steel rail 12 to be processed changes, the original positioning block 6 only needs to be pulled out from the inserts 4 on the corresponding splint, and then The newly adapted positioning block 6 is inserted into the corresponding insert 4, and the disassembly and replacement of the positioning block 6 can be completed. The operation is convenient and fast, which can improve the milling processing efficiency of the steel rail 12, and facilitate the completion of the matching of different steel rails 12. Positioning and fixing and milling processing have a wide range of use, making the use of the entire device more flexible and convenient.

In this embodiment, a second hydraulic cylinder 11 is vertically fixed on the worktable 1 below the support plate 10 , and the piston rod of the second hydraulic cylinder 11 faces upwards and is fixedly connected to the bottom of the corresponding support plate 10 . When in use, By running the two second hydraulic cylinders 11 synchronously by means of a synchronous motor or the like, the two support plates 10 can be raised and lowered synchronously, so that the height adjustment of the support plates 10 can be realized, which is convenient to cooperate with the auxiliary support for different rails 12, and improves the stability and stability of positioning and clamping. The precision of milling.

In this embodiment, a plurality of reinforcing ribs 2 are arranged between the side surface of the fixed splint 3 away from the movable splint 8 and the side table 1. The reinforcing ribs 2 are evenly spaced along the length direction of the fixed splint 3, which is beneficial to The structural strength and stability of the fixed splint 3 are improved to ensure stable and reliable positioning and clamping of the rail 12 . There is a gap between the bottom of the movable splint 8 and the worktable 1 so as not to affect the reciprocating movement of the movable splint 8 and to ensure the smooth positioning and clamping of the rail 12 . The outer surface of the positioning block 6 is provided with a rubber pad 7, which can not only increase the friction, improve the clamping stability of the steel rail 12, but also play the role of buffering and shock absorption, reduce the wear of the rail waist of the steel rail 12, and ensure that the steel rail 12 of finished product quality.

The working principle of the utility model: when the utility model is in use, the height of the support plate 10 is adjusted by synchronously operating two second hydraulic cylinders 11 according to the size of the steel rail 12 to be milled, so that the two ends of the steel rail 12 are placed on the support plate 10. When the plate 10 is on, the rail waist of the steel rail 12 can correspond to the corresponding positioning block 6 . After the position of the support plate 10 is determined, the rail 12 is placed on the support plate 10, and the rail waist on the side close to the fixed splint 3 is placed in close contact with the corresponding positioning block 6, and then the first hydraulic cylinders 9 are operated synchronously to make the first hydraulic cylinder 9. The piston rod of a hydraulic cylinder 9 extends synchronously, pushes the movable splint 8 and the positioning block 6 on it to move towards the fixed splint 3, and inserts the positioning block 6 on the movable splint 8 into the corresponding rail waist of the rail 12 until the rail is 12 is firmly clamped between the movable splint 8 and the fixed splint 3, the positioning and fixing of the rail 12 can be completed, and then the bottom of the rail 12 can be milled through the cooperation of the entire worktable 1 and the milling tool. If the rail waist of the steel rail 12 changes, it is only necessary to pull out the original positioning block 6 from the insert 4 on the corresponding splint, and then insert the new adapted positioning block 6 into the corresponding insert 4. The disassembly and replacement of the positioning block 6 is completed, the operation is convenient and fast, the milling processing efficiency of the steel rail 12 can be improved, and it is convenient to cooperate to complete the positioning and fixing and milling processing of different steel rails 12, and the use range is wide, making the use of the entire device more flexible and convenient.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection of the utility model.

Claims (6)

1. The utility model provides a rail end milling process tool of rail, includes the workstation, its characterized in that, one end is fixed along its length direction and is equipped with solid fixed splint on the workstation, the other end is equipped with a plurality of first pneumatic cylinders along its length direction interval mount on the workstation, the equal level of first pneumatic cylinder sets up, and its piston rod all moves splint towards solid fixed splint place direction and fixedly connected with, move splint and gu the relative side upper portion of splint all follow its length direction and can dismantle and be connected with the locating piece, the rail waist looks adaptation of the relative side of two locating pieces and corresponding rail, the position department that is close to the locating piece on the solid fixed splint on the both ends of workstation length direction all is equipped with height-adjustable's backup pad.

2. The rail bottom milling jig for the steel rail according to claim 1, wherein the movable clamping plate and the fixed clamping plate are provided with two opposite sides provided with two groups of insertion strips, the insertion strips are T-shaped and arranged along the length direction of the corresponding clamping plate, the insertion strips on the two clamping plates are arranged oppositely, the insertion strips on the single clamping plate are distributed in two groups in parallel up and down, the opposite sides of the two positioning blocks are provided with insertion grooves matched with the corresponding insertion strips, and the positioning blocks are connected with the insertion strips on the corresponding clamping plates in an insertion manner through the insertion grooves.

3. The rail bottom milling tool for the steel rail according to claim 1, wherein a second hydraulic cylinder is vertically and fixedly arranged on the workbench below the support plate, and a piston rod of the second hydraulic cylinder faces upwards and is fixedly connected with the bottom of the corresponding support plate.

4. The rail bottom milling processing jig for the steel rail according to claim 1, wherein a plurality of reinforcing ribs are arranged between the side surface of the fixed clamping plate, which is far away from the movable clamping plate, and the side workbench, and the reinforcing ribs are uniformly distributed at intervals along the length direction of the fixed clamping plate.

5. The rail bottom milling tool for the steel rail according to claim 1, wherein a gap exists between the bottom of the movable clamping plate and the workbench.

6. The rail bottom milling tool for the steel rail according to claim 1, wherein a rubber pad is arranged on the outer surface of the positioning block.

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