Positioning tool for laser strengthening machining of turnout switch rail

Abstract

The utility model discloses a positioning tool for laser strengthening processing of a turnout switch rail, which comprises a head positioning block, a middle leveling device and a tail follow-up device which are respectively arranged at the head part, the middle part and the tail part of the turnout switch rail, and the head positioning block comprises a plurality of L-shaped structures and is fixed with a machine tool workbench; the middle leveling device is connected with a mounting hole of the turnout switch rail, the tail follow-up device is composed of universal wheels and a clamping tool and plays a role in lifting the turnout switch rail, and meanwhile the universal wheels enable the position of the turnout switch rail to be finely adjusted. By means of the device, the side edge of the turnout switch rail can be adjusted to be horizontal conveniently, and rapid positioning of the turnout switch rail can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a positioning tool, especially a positioning tool for laser strengthening processing of switch point rail. BACKGROUND

[0002] The switch point rail is a special track for train turning, and has large bearing force and fast abrasion, and the most easily abraded part is the side of the head part of the switch point rail.

[0003] When the laser strengthening is carried out on the side of the head part of the switch point rail, in order to keep the stability of the spot size, the vertical distance between the laser converging focus point and the area to be strengthened should not be more than ±2mm in the processing process. Since the curve of the side of the switch point rail is complex, if the laser head is required to move according to the shape curve of the side of the switch point rail, the movement performance of the machine tool is required to be high. Therefore, a simple positioning tool can be designed, so that the side of the switch point rail is horizontal during the laser strengthening process, and the laser head only needs to move in the horizontal plane to complete the strengthening, which can greatly reduce the movement performance requirement of the machine tool. SUMMARY

[0004] The utility model discloses a positioning tool for laser strengthening processing of switch point rail which is suitable for various types of switch point rail, and can position quickly and conveniently and adjust the side of the switch point rail to be horizontal.

[0005] The technical solution of the utility model is realized as follows:

[0006] The positioning tool for laser strengthening processing of switch point rail comprises a head positioning block, a middle leveling device and a tail follow-up device which are respectively installed at the head part, the middle part and the tail part of the switch point rail, the head positioning block and the middle leveling device are placed on the machine tool workbench, the tail follow-up device is placed on the auxiliary platform, and the top surface of the auxiliary platform is a water platform surface.

[0007] The head positioning block comprises a plurality of L-shaped structures, a long circular hole is formed in the horizontal transverse plate of the L-shaped structure, the L-shaped structure is fixed to the machine tool workbench through the bolt penetrating through the long circular hole, the vertical plate of one of the L-shaped structures is closely attached to the front wall of the switch point rail, and the vertical plates of the plurality of L-shaped structures are respectively closely attached to the front and rear side walls of the head part of the switch point rail.

[0008] The middle leveling device comprises a first U-shaped frame, a switch rail is arranged between the upper flange plate and the lower flange plate of the first U-shaped frame, a screw rod of an adjusting bolt arranged in a vertical direction passes through a screw hole in the upper flange plate of the first U-shaped frame and is hung on the upper flange plate through a screw head of the adjusting bolt, the lower part of the screw rod passes through a mounting hole in the switch rail and is fixedly connected with the switch rail through an adjusting nut connected with the adjusting bolt;

[0009] The tail follow-up device comprises a second U-shaped frame, two universal wheels are connected to the bottom wall of the web of the second U-shaped frame, a side stopper is arranged between the front and rear flange plates of the second U-shaped frame, two through holes are formed in the one side flange plate of the second U-shaped frame, the end parts of the screw rods of two push bolts arranged in a horizontal direction pass through a locking nut and the through holes in the one side flange plate in sequence and are fixedly connected with the side stopper, the locking nut is used for fixedly connecting the screw rods of the push bolts with the one side flange plate in which the through holes are formed, the tail part of the switch rail is clamped between the side stopper and the other side flange plate of the second U-shaped frame, and the top wall of the web of the second U-shaped frame of the tail follow-up device placed on the auxiliary platform is lower than the surface of the machine tool workbench.

[0010] The device has the advantages that: the device is applicable to switch rails with different shapes and sizes; the positioning tool is simple to manufacture; the device is convenient to operate; after the switch rail is lifted and placed on the machine tool workbench and the tail follow-up device, other positioning work can be completed manually; the device is convenient for adjusting the horizontal direction of the side edge of the switch rail and can realize rapid positioning of the switch rail. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 FIG. 4 is a use schematic view of the positioning tool for laser strengthening processing of a switch rail in the utility model.

[0012] Figure 2 FIG. 5 is a structure schematic view of the head positioning block in the positioning tool for laser strengthening processing of a switch rail in the utility model.

[0013] Figure 3 FIG. 6 is a structure schematic view of the middle leveling device in the positioning tool for laser strengthening processing of a switch rail in the utility model.

[0014] Figure 4 FIG. 7 is a structure schematic view of the tail follow-up device in the positioning tool for laser strengthening processing of a switch rail in the utility model.

[0015] Figure 5 FIG. 7 is a structure schematic view of the tail follow-up device in the positioning tool for laser strengthening processing of a switch rail in the utility model. DETAILED DESCRIPTION

[0016] The utility model will be further described in detail below with reference to the drawings.

[0017] The utility model discloses a positioning tool for laser strengthening processing of switch frog, as shown in the drawings, which comprises a head positioning block 1, a middle leveling device 2 and a tail follow-up device 3 respectively installed at the head 7, the middle and the tail 8 of the switch frog 4. The head positioning block 1 and the middle leveling device 2 are placed on the machine tool workbench 5, and the tail follow-up device 3 is placed on the auxiliary platform 6. The top surface of the auxiliary platform 6 is a water platform surface.

[0018] The head positioning block 1 comprises a plurality of L-shaped structures, which fix the head of the switch frog on the machine tool workbench. Long circular holes are formed in the horizontal transverse plates of the L-shaped structures, and the L-shaped structures are fixed to the machine tool workbench through bolts passing through the long circular holes. The vertical plates of one of the L-shaped structures abut against the front wall of the switch frog, and the vertical plates of the plurality of L-shaped structures are arranged against the front and rear side walls of the head of the switch frog respectively.

[0019] Preferably, a positioning key with a threaded hole can be placed in the T-shaped groove of the machine tool workbench to realize the connection and fixation of the head positioning block and the machine tool workbench. When in use, the head of the switch frog is placed on the machine tool workbench by a crane, one head positioning block is fixed in front of the head of the switch frog, and a plurality of positioning blocks are fixed on the front side of the head of the switch frog; after adjusting the middle leveling device 2 and the tail follow-up device 3, a plurality of positioning blocks are arranged against the rear side of the switch frog and fixed on the machine tool workbench.

[0020] The middle leveling device 2 is used for adjusting the levelness of the side edge of the switch frog. The device comprises a first U-shaped frame, the switch frog is arranged between the upper flange plate and the lower flange plate of the first U-shaped frame, a screw rod of an adjusting bolt arranged in a vertical direction passes through a threaded hole formed in the upper flange plate of the first U-shaped frame and is hung on the upper flange plate through the screw head of the adjusting bolt, the lower part of the screw rod passes through a mounting hole 9 provided on the switch frog and is fixedly connected with the switch frog through an adjusting nut connected with the adjusting bolt. The outer diameter of the adjusting nut is larger than the mounting hole of the switch frog, so that the switch frog is hung on the middle leveling device.

[0021] By adjusting the adjusting nut, the switch frog can be adjusted so that the side edge of the switch frog is horizontal, which is convenient for laser strengthening. The levelness can be detected by a conventional level.

[0022] The tail follow-up device 3 comprises a second U-shaped frame, two universal wheels 10 are connected to the bottom wall of the web of the second U-shaped frame, a side stop 11 is arranged between the front and rear flange plates of the second U-shaped frame, two through holes are formed in the side flange plate of the second U-shaped frame, the end portions of the bolt rods of the two horizontally arranged push bolts are sequentially connected to a locking nut, a through hole in the side flange plate and the side stop through the through holes, respectively, and the locking nut is used to fixedly connect the bolt rod of the push bolt with the flange plate having the through hole. The tail of the switch rail is clamped between the side stop and the flange plate on the other side of the second U-shaped frame. The top wall of the web of the second U-shaped frame of the tail follow-up device placed on the auxiliary platform is lower than the surface of the machine tool workbench. Preferably, the top wall of the web of the second U-shaped frame is 50-100 mm lower than the surface of the machine tool workbench.

[0023] When in use, the tail follow-up device placed on the auxiliary platform plays a role of lifting the switch rail, and the universal wheels can make the switch rail tail follow-up device move flexibly and drive the switch rail to realize position adjustment. After the head orientation device completes the positioning of the switch rail, the universal wheels are locked to realize the positioning of the switch rail.

[0024] The machine tool workbench refers to the workbench of a laser processing special machine tool, and preferably has a T-shaped groove.

[0025] The working process of the device is as follows:

[0026] The auxiliary platform is placed on one side of the machine tool workbench, and the tail follow-up device is placed on the auxiliary platform. The middle leveling device is fixed to the edge of the machine tool workbench close to the auxiliary platform.

[0027] The switch rail is lifted, the U-shaped groove of the middle leveling device is pushed in the air, the screw rod is inserted through the mounting hole of the switch rail close to the head rail, and the adjusting nut is screwed on the bottom of the screw rod. The switch rail is manually rotated so that the head rail is placed on the area of the machine tool workbench that is convenient for laser strengthening, and the tail is placed on the tail follow-up device. The lifting belt is removed, and the head positioning block is placed in front of the head of the switch rail and on one side, and the positioning block is fixed on the machine tool workbench.

[0028] The adjusting nut of the middle leveling device is adjusted, thereby affecting the included angle between the switch rail and the horizontal plane of the machine tool workbench, and finally the side edge of the head rail of the switch rail that needs to be laser strengthened is in the horizontal position.

[0029] The locking nut of the side stop of the tail follow-up device is adjusted to clamp the switch rail. The universal wheels of the tail follow-up device are used to move the switch rail to be completely close to the fixed head positioning block, and the universal wheels are locked. Then, the last side head positioning block is completely close to the switch rail and is fixed.

Claims

1. A positioning tool for laser strengthening of a switch rail, characterized by: It includes a head positioning block, a middle leveling device and a tail follower device respectively installed at the head, middle and tail of the turnout rail, the head positioning block and the middle leveling device are placed on the machine tool workbench, and the tail follower device is placed on the auxiliary platform, and the top surface of the auxiliary platform is a horizontal surface; The head positioning block includes a plurality of L-shaped structures, wherein oblong holes are opened on the horizontal cross plates of the L-shaped structures, and the L-shaped structures are fixed to the machine tool workbench by bolts passing through the oblong holes, wherein one vertical plate of the L-shaped structure is close to the front wall of the switch point rail, and the vertical plates of the plurality of L-shaped structures are respectively close to the front and rear side walls of the head of the switch point rail; The middle leveling device includes a first U-shaped frame, the switch rail is arranged between the upper flange plate and the lower flange plate of the first U-shaped frame, a screw rod of an adjusting bolt arranged in the vertical direction passes through a screw hole opened in the upper flange plate of the first U-shaped frame and is hung on the upper flange plate through the screw head of the adjusting bolt, the lower part of the screw rod passes through the mounting hole on the switch rail and is fixedly connected to the switch rail through an adjusting nut connected to the adjusting bolt; The tail follower device includes a second U-shaped frame, two universal wheels are connected to the bottom wall of the web of the second U-shaped frame, a side stop is arranged between the front and rear flange plates of the second U-shaped frame, and two through holes are opened on one side flange plate of the second U-shaped frame, and the ends of the bolt rods of two pushing bolts arranged in the horizontal direction respectively pass through a locking nut and the through holes on one side flange plate and are fixedly connected to the side stop, and the locking nut is used to fix the bolt rod of the pushing bolt to the flange plate on the side with the through hole, and the tail clamp of the turnout rail is arranged between the side stop and the flange plate on the other side of the second U-shaped frame, and the top wall of the web of the second U-shaped frame of the tail follower device placed on the auxiliary platform is lower than the surface of the machine tool worktable.

2. The positioning tool for laser strengthening of a switch rail according to claim 1, characterized in that: The top wall of the second U-shaped frame web is between 50 mm and 100 mm lower than the surface of the machine tool worktable.

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