CN220881379U - Novel rail bottom milling tool - Google Patents

Abstract

Providing a novel rail bottom milling tool, wherein the novel rail bottom milling tool is provided with a base with an integral structure; the bottom of the base is provided with a distance-adjusting screw in an adapting way, and the base is provided with a turning part of the V-shaped arm claw in a positioning way, so that the arm claw turns around the middle part of the arm claw at fixed points; the upper part of the base is provided with a pair of guide tables; the guide tables are symmetrically arranged at intervals in parallel perpendicular to the left and right axes of the distance-adjusting screw; the guide table is slidably matched with the sliding clamping block; the middle part of the distance-adjusting screw rod is screwed, and two slider components which move oppositely or relatively are installed in a sliding displacement manner relative to the distance-adjusting screw rod; the top end of the sliding block component is hinged with the bottom end of the V-shaped arm claw; the screw rod is rotated to realize opposite or opposite synchronous linear displacement of the sliding block component; the sliding block component capable of synchronously and linearly displacing converts the horizontal displacement action of the component into the overturning action of the V-shaped arm claw, and the rail head jaw of the rail piece is synchronously clamped or loosened through the top end of the overturned V-shaped arm claw. The utility model limits the vertical displacement of the steel rail by fixing the upper surface of the rail limb and the jaw of the rail head, has excellent centering degree and can provide firmer and more stable fixation.

Description

Novel rail bottom milling tool

Technical Field

The utility model belongs to the technical field of parts and tools of operation transportation machine tools, and particularly relates to a novel rail bottom milling tool.

Background

With the high-speed development of national railway construction, the quality requirements of the market on turnout products are increasingly higher. The switch rail (or point rail) is an important component in the turnout products, and the product quality is particularly important. The milling of the profiled section rail bottom is used as an important process of AT rail machining, directly influences the rail bottom surface flatness of the point rail (or the core rail), seriously causes the reduction of the service life of a rail hanger plate and a rail, and causes the potential safety hazard of the fracture of the slide plate due to concentrated load.

At present, the existing profiling section rail bottom milling tool generally adopts a fixing mode of the upper surface of a rail limb and a rail web, the clamping force of the mode in the vertical direction is insufficient, and the vibration of a steel rail is easily caused under the action of vibration. The existing tool is provided with the fixed block on one side of the rail web and the top on the other side, or the tops are arranged on the two ends, so that the mode is greatly influenced by shape errors of the rail web and human factors, the axis of the profiling section is easy to incline in the clamping process, and leveling of rail bottom milling cannot be well achieved. Therefore, the following technical solutions are now proposed.

Disclosure of utility model

The utility model solves the technical problems that: the novel rail bottom milling tool solves the technical problems that the clamping force of the existing tool in the vertical direction is insufficient, the clamping mode is greatly influenced by rail waist shape errors and human factors, the axis of a profiling section is inclined easily in the clamping process, and the leveling of rail bottom milling cannot be well realized.

The utility model adopts the technical scheme that: a novel rail bottom milling tool, which is provided with a base with an integral structure; the bottom of the base is provided with a distance adjusting screw in an adapting way; the middle part of the base is positioned and provided with a V-shaped arm claw fixed-point turning part, and the V-shaped arm claw can turn around the middle part fixed-point turning part; the upper part of the base is provided with a pair of guide tables; the guide table spaces are perpendicular to the distance adjusting screw rod and are symmetrically arranged at intervals in parallel in a left-right axis manner; the guide table is adapted to be provided with a sliding clamping block attached to the upper surface of the rail limb; the middle part of the distance adjusting screw rod is screwed, and two opposite or opposite sliding block components are installed in a sliding displacement fit manner relative to the distance adjusting screw rod; the top end of the sliding block component is hinged with the bottom end of the V-shaped arm claw; the distance-adjusting screw is rotated to realize opposite or opposite synchronous linear displacement of the two slide block components; the horizontal displacement action of the sliding block component is converted into the overturning action of the V-shaped arm claw by the sliding block component which is synchronously and linearly displaced in opposite directions or relatively, so that the rail head jaw of the rail piece is synchronously clamped or loosened through the top end of the overturned V-shaped arm claw.

In the above technical solution, it is preferable that: the bottom of the base is provided with an axle hole and a horizontal groove which are parallel at intervals up and down; a vertical groove perpendicular to the horizontal groove is formed in the middle of the base; the top of the base is provided with a guide table with a T-shaped or dovetail-shaped longitudinal section; the horizontal groove provides linear guide for linear displacement of the slide block assembly; the vertical groove is used for fastening a fixing sheet arranged at the turning position of the V-shaped arm claw; the shaft hole is arranged below the horizontal groove and is arranged in parallel with the horizontal groove at an upper-lower interval, and the shaft hole is used for adaptively installing the distance-adjusting screw.

In the above technical solution, further: one end of the distance-adjusting screw is provided with a screw cap, and the other end is provided with a multi-square head; a limit boss is also arranged at the inner side end of the multi-square head; the limiting boss and the inner side end face of the screw cap are respectively used for limiting the sliding block assembly to move out of the strokes of the left end and the right end of the screw thread.

In the above technical solution, further: the sliding block assembly comprises a sliding block base and a sliding block upper part; the two groups of slider bases which synchronously and oppositely or relatively linearly displace are respectively provided with threads with opposite thread directions; the top end of the sliding block base is fixedly connected with the upper part of the sliding block through a pin; the upper part of the sliding block is of a double-lug plate type structure; the double lug plates at the upper part of the sliding block are provided with longitudinal elliptical through holes which are coaxially opposite; the elliptical through hole is hinged with the bottom end of the V-shaped arm claw through a first pin shaft and is used for converting the linear displacement of the sliding block assembly into the overturning action of the V-shaped arm claw.

In the above technical solution, further: the V-shaped turning part of the V-shaped arm claw is provided with a fixing piece; the fixing piece is of a T-shaped structure; the fixing piece of the T-shaped structure is fixedly connected with the middle part of the base; and the vertical end face of the fixing piece of the T-shaped structure is limited and is suitably matched and fixedly connected with the outer vertical end face of the square head at one end of the square head pin shaft; the shaft body at the other end of the square head pin shaft is hinged with the turning part at the middle part of the V-shaped arm claw, so that the V-shaped arm claw turns around the square head pin shaft body at fixed points.

In the above technical solution, it is preferable that: the guide table and the base are of an integrated structure; four sliding clamping blocks are arranged on the upper part of the guide table in a sliding fit manner; the slopes of the four sliding clamping blocks are equal to the slope of the upper surface of the rail limb and are 1:9, a step of performing the process; the length of the guide table is 160mm or more.

Compared with the prior art, the utility model has the advantages that:

1. the utility model limits the displacement of the steel rail in the vertical direction by fixing the upper surface of the rail limb and the jaw of the rail head, and provides a firmer and stable fixing mode.

2. The special pitch-adjusting screw is designed, the screw transmission is more accurate, and the movement of the sliding block assembly is more uniform and synchronous.

3. The utility model adopts a structure that the sliding block drives the V-shaped arm claw, namely the upper part of the sliding block is connected with the V-shaped arm claw through the first pin shaft, so that horizontal movement is converted into rotary movement, and the centering synchronous clamping and synchronous loosening functions of the left side and the right side of the rail piece are realized.

4. The base is of an integral structure, so that more stable support can be provided for each part; the base is provided with a guide table for providing support and guide functions for the sliding clamping blocks, and the sliding clamping blocks with the replaceable and complementary types realize the support and positioning of rail bottoms of different rails.

5. The upper part of the sliding block and the sliding block base are of a split structure and are connected through the pins, so that the sliding block with proper size can be conveniently assembled and replaced.

Drawings

FIG. 1 is an isometric view of the present utility model prior to rail attachment;

FIG. 2 is a front perspective view of the clamping rail of the present utility model in a front-to-rear position;

FIG. 3 is an isometric view of a base of the present utility model;

FIG. 4 is an isometric view of the working principle of the V-arm jaw pair clamp of the present utility model clamping a workpiece;

FIG. 5 is a longitudinal cross-sectional view of FIG. 4 in accordance with the present utility model;

FIG. 6 is a front view of the pitch screw of the present utility model;

FIG. 7 is an isometric view of a slider assembly of the present utility model;

FIG. 8 is a longitudinal cross-sectional view of the slider assembly of FIG. 7;

FIG. 9 is a schematic view of the connection of the V-arm claw and the fixing piece;

FIG. 10 is an isometric view of a slide latch of the present utility model;

In the figure: 1-a base; 101-horizontal grooves, 102-vertical grooves and 103-shaft holes; 2-distance adjusting screw rods, 201-multiple square heads and 202-limit bosses; 3-a slide block base, 4-the upper part of the slide block and 401-an elliptical through hole; 5-fixing pieces, 6-square head pin shafts, 601-square head outer vertical end faces and 602-shaft bodies; the device comprises a 7-V-shaped arm claw, an 8-sliding clamping block, a 9-first pin shaft, a 10-gasket, a 11-second pin shaft, a 12-screw cap, a 13-pin and a 14-guide table.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to fig. 1 to 10 of the embodiments of the present utility model, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The novel rail bottom milling tool is provided with a base 1 with an integral structure, and a distance adjusting screw 2 is installed at the bottom of the base 1 in an adaptive mode (shown in fig. 1 and 2).

Example 1: and the distance adjusting screw rod 2 is rotatably installed with the base 1 in a clearance fit manner.

Example 2: the distance adjusting screw rod 2 is installed in a rotation fit way with the base 1 through a bearing and a sliding shaft sleeve.

The middle part of the base 1 is positioned and provided with a fixed point turning part of the V-shaped arm claw 7, and the V-shaped arm claw 7 can turn around the fixed point turning part at the middle part. The connecting structure is used for laying a structural foundation for the follow-up overturning action of the V-shaped arm claw 7 as described later.

A pair of guide tables 14 are arranged at the upper part of the base 1; the pair of guide tables 14 are arranged in parallel in a space perpendicular to the distance adjusting screw 2 and symmetrically spaced by a left-right axis; the guide table 14 is provided with a sliding clamping block 8 which is attached to the upper surface of the rail limb in an adapting way. The sliding clamping block 8 is used for fitting and positioning the upper surface of the rail limb of the fitting rail piece as shown in fig. 2.

The middle part of the distance adjusting screw rod 2 is screwed, and two opposite or opposite sliding block components are installed in a sliding linear displacement fit manner relative to the distance adjusting screw rod 2. Namely, the slide block assembly can linearly displace relative to the pitch adjusting screw 2 while the internal thread of the slide block assembly is screwed into the pitch adjusting screw 2. To achieve the above functions: the bottom of the sliding block component is required to be provided with a shaft hole; the shaft hole is provided with a bearing piece or a double sliding shaft sleeve; the outer ring of the bearing or the shaft sleeve is matched with the shaft hole, and the inner thread of the bearing or the inner ring of the shaft sleeve is screwed and connected with the distance-adjusting screw rod 2 in a proper matching way; and the directions of the internal threads of the two slide block assemblies are opposite, so that the two slide block assemblies can only realize linear displacement without rotating while the internal threads of the two slide block assemblies rotate relative to the pitch adjusting screw rod 2. Meanwhile, it is emphasized that: the directions of the internal threads of the two slide block assemblies which are synchronously displaced in pairs are opposite, so that synchronous relative opposite displacement of the slide block assemblies is realized.

On the basis of the method, the device comprises the following steps: the top end of the sliding block component is hinged with the bottom end of the V-shaped arm claw 7; the distance adjusting screw rod 2 is rotated to realize opposite or opposite synchronous linear displacement of the two slide block components; the horizontal displacement action of the sliding block assembly is converted into the overturning action of the V-shaped arm claw 7 by the sliding block assembly which synchronously and linearly displaces in opposite directions or relatively, so that the rail head jaw of the rail piece is synchronously clamped or loosened through the top end of the overturned V-shaped arm claw 7. See the working principle described later. And will not be described in detail herein.

In the above embodiment, it is preferable that: the guide table 14 and the base 1 are integrated (as shown in fig. 3); the integrated structure has no relative displacement of each position relation, and ensures positioning stability and fixing firmness.

The bottom of the base 1 is provided with an axle hole 103 and a horizontal groove 101 which are vertically spaced and parallel (as shown in figure 3); two shaft holes 103 are formed; the horizontal groove 101 is of a sinking groove structure. A vertical groove 102 perpendicular to the horizontal groove 101 is formed in the middle of the base 1; and the vertical slot 102 communicates with the horizontal slot 101.

The top of the base 1 is provided with a guide table 14 with a T-shaped or dovetail-shaped longitudinal section; with this structure, the accurate linear sliding displacement of the slide block 8 on the guide table 14 is facilitated. And the sliding clamping block 8 and the guide table 14 have no fastening piece, so that the specific position of the sliding clamping block 8 can be conveniently adjusted at any time in the longitudinal length direction of the guide table 14.

The horizontal slot 101 provides a linear guide for linear displacement of the slider assembly; the vertical groove 102 is used for fastening and positioning the fixing piece 5 arranged at the turning position of the V-shaped arm claw 7 (shown in figure 1); the specific connection and positioning manner of the fixing piece 5 will be described later.

The shaft hole 103 is arranged below the horizontal groove 101 and is arranged in parallel with the horizontal groove 101 at an upper-lower interval, and the shaft hole 103 is used for adaptively installing the distance-adjusting screw 2. As described previously: and the distance adjusting screw rod 2 is rotatably installed with the base 1 in a clearance fit manner. Or the distance adjusting screw rod 2 is rotatably arranged with the base 1 through a bearing or a sliding sleeve.

(As shown in fig. 4, 5 and 6), the above embodiment further comprises: one end of the distance-adjusting screw 2 is provided with a screw cap 12, and the other end is provided with a multi-square head 201; the screw cap 12 is fixedly connected with the screw shaft end pin hole into a whole through the second pin shaft 11, a gasket 10 is arranged on the inner side end surface of the screw cap 12, and the gasket 10 and the screw cap 12 are used for limiting the shaft end over-displacement of the sliding block assembly. A limit boss 202 is also arranged at the inner side end of the multiparty head 201; the larger diameter limiting boss 202 and the inner end surface of the screw cap 12 are used for limiting the travel of the sliding block assembly out of the left end and the right end of the thread respectively.

In the above embodiments (as shown in fig. 7 and 8), further: the slider assembly comprises a slider base 3 and a slider upper 4. The two groups of slide block bases 3 which synchronously and oppositely move linearly or relatively are respectively provided with threads with opposite thread directions; therefore, synchronous opposite or relative linear displacement is realized, and detailed description is omitted when the specific implementation structure is referred to in the foregoing description.

The top end of the slider base 3 is fixedly connected with the upper part 4 of the slider through a pin 13; the removal and replacement of the upper part 4 of the slide is achieved by means of the pins 13. The upper part 4 of the sliding block is of a double-lug plate type structure; the double lug plates of the upper part 4 of the sliding block are provided with coaxial opposite longitudinal elliptical through holes 401; to provide clearance displacement support and limit for the overturning of the V-arm jaw 7. The oval through hole 401 is hinged with the bottom end of the V-shaped arm claw 7 through the first pin shaft 9 and is used for converting linear displacement of the sliding block assembly into overturning action of the V-shaped arm claw 7.

(As shown in fig. 9) in the above embodiment, further: the V-shaped turning part of the V-shaped arm claw 7 is provided with a fixing piece 5; the fixing piece 5 is of a horizontally transverse T-shaped structure; the fixing piece 5 of the horizontally-transversely-arranged T-shaped structure is fixedly connected with the vertical groove 102 in the middle of the base 1; and the vertical end face 601 of the fixing piece 5 of the T-shaped structure is in spacing fit with the square outer vertical end face 601 of one end of the square pin shaft 6, and the square pin shaft 6 is used for realizing fixed connection with the fixing piece 5 and simultaneously realizing spacing of the fixing piece 5. The shaft body 602 at the other end of the square head pin shaft 6 is hinged with the turning part in the middle of the V-shaped arm claw 7, so that the V-shaped arm claw 7 turns around the square head pin shaft 6 at fixed points, and the linear displacement of the sliding block assembly is converted into turning action of the V-shaped arm claw 7.

Four sliding clamping blocks 8 are arranged on the upper part of the guide table 14 in a sliding fit manner (as shown in figure 1); the slope of the four sliding clamping blocks 8 is equal to the slope of the upper surface of the rail limb and is 1:9 (as shown in fig. 2); the length of the guide table 14 is 160mm or more (as shown in fig. 1 and 3), and the longitudinal supporting position of the sliding clamping block 8 can be adjusted by at least 160 mm.

The working principle is that when milling the profiled section rail bottom, the steel rail is placed on the tooling upside down, and the proper sliding clamping block 8 is selected to contact with the upper surface of the rail limb, so as to provide support for the steel rail bottom. The distance adjusting screw rod 2 is firstly rotated clockwise, at the moment, the distance adjusting screw rod 2 drives the two groups of slide block bases 3 and the slide block upper parts 4 to move outwards, and the V-shaped arm claws 7 of the slide block upper parts 4 moving outwards rotate inwards and downwards along with the square head pin shafts 6, so that the action of clamping the lower jaw of the rail head is realized. Because the two groups of slider bases 3 and the slider upper parts 4 simultaneously move outwards, the V-shaped arm claws 7 connected with the slider bases synchronously turn inwards to realize the action of clamping the jaw of the rail head, thereby correcting the condition of the malposition of the axis caused by the surface error of the steel rail. When the rail bottom milling process is finished, the distance adjusting screw rod 2 is rotated anticlockwise, at the moment, the slider base 3 and the slider upper part 4 move towards the direction close to the workpiece, namely inwards, the slider base 3 and the slider upper part 4 synchronously move inwards, so that the V-shaped arm claw 7 is driven to realize loosening action, and the clamped rail piece is loosened.

From the above description it can be found that: the utility model limits the displacement of the steel rail in the vertical direction by fixing the upper surface of the rail limb and the jaw of the rail head, and provides a firmer and stable fixing mode.

The special distance adjusting screw rod 2 is designed, the threaded transmission of the distance adjusting screw rod 2 is more accurate, and the movement of the sliding block assembly is more uniform and synchronous.

According to the utility model, a linear-position sliding block assembly is adopted to convert an action structure for driving the V-shaped arm claw 7 to overturn, namely, the upper part 4 of the sliding block is connected with the V-shaped arm claw 7 through the first pin shaft 9, so that the horizontal movement of the sliding block assembly is converted into the overturning movement of the V-shaped arm claw 7, the functions of centering synchronous clamping and synchronous loosening on the left side and the right side of a rail piece are realized, and the clamping device is simple to operate, efficient in clamping and high in precision.

The base 1 is of an integral structure, and can provide more stable support for each part; the base 1 is provided with the guide table 14, so that stable support and guide effect are provided for the sliding clamping blocks 8, the sliding clamping blocks 8 are not required to be fastened by fasteners, and the sliding clamping blocks 8 with different models can be replaced and supplemented so as to realize support and positioning of rail bottoms with different rail types.

The upper part 4 of the sliding block and the sliding block base 3 are of a split structure and are connected through the pin 13, so that the sliding block with proper size can be conveniently assembled and replaced.

To sum up: the clamping fixture solves the technical problems that the clamping force of the existing fixture in the vertical direction is insufficient, the clamping mode is greatly influenced by rail web shape errors and human factors, the axis of a profiling section is easy to incline in the clamping process, and the leveling of rail bottom milling cannot be well realized. According to the tooling designed by the utility model, the displacement of the steel rail in the vertical direction is limited by fixing the upper surface of the rail limb and the lower jaw of the rail head, so that a firmer fixing mode is provided. The structure that the sliding block component drives the V-shaped arm claw is adopted, so that the left side and the right side of the rail piece are synchronously clamped and synchronously loosened. The special distance adjusting screw is designed, so that synchronous movement of the sliding block assembly is more uniform and accurate.

In this specification, each embodiment is described in a related manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model are included in the protection scope of the present utility model.

Claims (6)

1. Novel rail bottom mills frock, its characterized in that: a base (1) having a monolithic structure; the bottom of the base (1) is provided with a distance adjusting screw rod (2) in an adaptive manner; the middle part of the base (1) is positioned and provided with a fixed-point turning part of the V-shaped arm claw (7), and the V-shaped arm claw (7) can turn around the fixed-point turning part at the middle part; a pair of guide tables (14) are arranged at the upper part of the base (1); the guide platforms (14) are spatially perpendicular to the distance adjusting screw (2) and are symmetrically arranged at intervals in parallel in a left-right axis manner; the guide table (14) is provided with a sliding clamping block (8) which is fit with the upper surface of the rail limb; the middle part of the distance adjusting screw rod (2) is screwed, and two opposite or opposite sliding block components are installed in a sliding displacement fit manner relative to the distance adjusting screw rod (2); the top end of the sliding block component is hinged with the bottom end of a V-shaped arm claw (7); the distance adjusting screw rod (2) is rotated to realize opposite or opposite synchronous linear displacement of the two slide block components; the horizontal displacement action of the sliding block component is converted into the overturning action of the V-shaped arm claw (7) by the sliding block component which is synchronously and linearly displaced in opposite directions or relatively, so that the rail head jaw of the rail piece is synchronously clamped or loosened through the top end of the overturned V-shaped arm claw (7).

2. The novel rail foot milling tool of claim 1, wherein: the bottom of the base (1) is provided with an axle hole (103) and a horizontal groove (101) which are parallel at intervals up and down; a vertical groove (102) perpendicular to the horizontal groove (101) is formed in the middle of the base (1); a guide table (14) with a T-shaped or dovetail-shaped longitudinal section is arranged at the top of the base (1); the horizontal groove (101) provides linear guidance for linear displacement of the slider assembly; the vertical groove (102) is used for fixedly positioning and installing a fixing sheet (5) arranged at the turning position of the V-shaped arm claw (7); the shaft hole (103) is arranged below the horizontal groove (101) and is arranged in parallel with the horizontal groove (101) at an upper-lower interval, and the shaft hole (103) is used for adaptively installing the distance-adjusting screw (2).

3. The novel rail foot milling tool according to claim 1 or 2, characterized in that: one end of the distance-adjusting screw (2) is provided with a screw cap (12), and the other end is provided with a multi-square head (201); a limit boss (202) is also arranged at the inner side end of the multiparty head (201); the limiting boss (202) and the inner side end surface of the screw cap (12) are respectively used for limiting the sliding block assembly to move out of the strokes of the left end and the right end of the screw thread.

4. The novel rail foot milling tool according to claim 1 or 2, characterized in that: the sliding block assembly comprises a sliding block base (3) and a sliding block upper part (4); the two groups of slide block bases (3) synchronously and oppositely move linearly or relatively are respectively provided with threads with opposite thread directions; the top end of the sliding block base (3) is fixedly connected with the upper part (4) of the sliding block through a pin (13); the upper part (4) of the sliding block is of a double-lug plate type structure; the double lug plates of the upper part (4) of the sliding block are provided with coaxial opposite longitudinal elliptical through holes (401); the elliptical through hole (401) is hinged to the bottom end of the V-shaped arm claw (7) through a first pin shaft (9) and is used for converting linear displacement of the sliding block assembly into overturning action of the V-shaped arm claw (7).

5. The novel rail foot milling tool according to claim 1 or 2, characterized in that: a fixing piece (5) is arranged at the V-shaped turning part of the V-shaped arm claw (7); the fixing piece (5) is of a T-shaped structure; the fixing piece (5) of the T-shaped structure is fixedly connected with the middle part of the base (1); and the vertical end face of the fixing piece (5) of the T-shaped structure is limited and is attached with a square outer vertical end face (601) which is suitably matched and fixedly connected with one end of the square pin shaft (6); a shaft body (602) at the other end of the square head pin shaft (6) is hinged to a turning part in the middle of the V-shaped arm claw (7), so that the V-shaped arm claw (7) turns around the shaft body of the square head pin shaft (6) at fixed points.

6. The novel rail foot milling tool according to claim 1 or 2, characterized in that: the guide table (14) and the base (1) are of an integrated structure; four sliding clamping blocks (8) are arranged on the upper part of the guide table (14) in a sliding fit manner; the slopes of the four sliding clamping blocks (8) are equal to the slope of the upper surface of the rail limb and are 1:9, a step of performing the process; the length of the guide table (14) is 160mm or more.