Rail bottom weld beading milling and grinding machine

Abstract

A rail bottom weld beading milling and grinding machine comprises a mounting frame and is characterized in that two fixed clamping hooks are symmetrically fixed to one end of the mounting frame, two push-pull type quick clamps are symmetrically arranged on the two sides of the mounting frame, and movable clamping hooks are connected to the front ends of pull rods of the push-pull type quick clamps respectively; the movable clamping hooks are in sliding connection with the mounting frame, correspond to the fixed clamping hooks one to one and are used for being matched with the fixed clamping hooks to clamp a steel rail to be milled and ground; a sliding frame is installed in the installation frame in a sliding mode through two sliding rails, a driving device and a rotating shaft are installed on the sliding frame, the output end of the driving device is in transmission connection with the rotating shaft, and a milling cutter is installed at the upper end of the rotating shaft and used for milling rail bottom weld beading under driving of the driving device. A lead screw transmission mechanism is connected between the installation frame and the sliding frame and used for driving the sliding frame to slide to achieve feeding of the milling cutter. The device has the advantages of being high in grinding speed, good in quality and capable of reducing labor intensity; the size is small and operation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a railway machine, in particular to a rail bottom welding bump milling and grinding machine. BACKGROUND

[0002] At present, although the formed bump of the 43-75 model steel rail after welding is treated by pushing, still has 2mm*20mm annular root bump, so most domestic factories adopt manual polishing bump removing process. This way not only has slow polishing speed, great labor intensity and great environmental pollution, but also can not guarantee quality, often appears that the grinding is not ground and the place that should not be ground is ground. Moreover, the polishing mark is disorderly, the sense organ is poor, and has certain influence on the export of the steel rail. CONTENT

[0003] The utility model solves the technical problem to provide a rail bottom welding bump milling and grinding machine that has fast polishing speed, good quality and can reduce labor intensity.

[0004] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A rail bottom welding bump milling and grinding machine, including installation frame, two fixed clamps are fixed symmetrically at one end of the installation frame, two push-pull type quick clamps are symmetrically arranged at the two sides of the installation frame, movable clamps are connected with the front end of the pull rod of the push-pull type quick clamp respectively, the movable clamps are slidably connected with the installation frame and correspond to the fixed clamps one by one, and are used for clamping the steel rail to be milled and ground in cooperation with the fixed clamps.

[0006] Two slide rails are slidably installed in the installation frame, a driving device and a rotating shaft are installed on the sliding frame, the output end of the driving device is in transmission connection with the rotating shaft, a milling cutter is installed on the upper end of the rotating shaft, and the rail bottom welding bump is milled and ground under the driving of the driving device.

[0007] A lead screw transmission mechanism is connected between the installation frame and the sliding frame, and is used for driving the sliding frame to slide to realize the feeding of the milling cutter.

[0008] As a further optimization, the installation frame is a rectangular frame formed by detachably connecting two long plates and two short plates.

[0009] As a further optimization, a strip-shaped long hole is arranged on each long plate of the installation frame, a sliding block is arranged in the strip-shaped long hole through sliding gap cooperation, and the movable clamp is connected with the sliding block penetrating through the strip-shaped long hole, so that the movable clamp can slide along the installation frame.

[0010] As a further optimization, the driving device is a driving motor and is connected with the rotating shaft through a belt transmission mechanism.

[0011] As a further optimization, the milling cutter is a disc milling cutter.

[0012] As further preferred, the screw rod of the screw rod transmission mechanism is rotatably mounted on the mounting frame, and the screw nut is fixed on the sliding frame.

[0013] As further preferred, the fixed clamping hook and the movable clamping hook are respectively provided with corresponding clamping grooves, the clamping grooves are right trapezoidal and the inner bottom surface is flush with the upper end surface of the mounting frame, so as to clamp the steel rail to be milled and ground.

[0014] The utility model discloses the beneficial effects of:

[0015] The movable clamping hook is driven to slide along the mounting frame by the push-pull type quick clamp, so that the steel rail to be milled and ground can be clamped in cooperation with the fixed clamping hook; the milling cutter is driven to feed by the driving device output end driving the rotating shaft and the milling cutter to rotate, and the sliding frame is driven to slide by the screw rod transmission mechanism, so that the milling cutter is driven to feed to mill and grind the rail bottom welding bump; the polishing speed is fast, the quality is good, the labor intensity can be reduced; the volume is small, and the operation is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structural schematic diagram of the utility model.

[0017] Figure 2 It is Figure 1 the top view of.

[0018] Figure 3 It is Figure 2 the A-A section view of.

[0019] Figure 4 It is the perspective view of the utility model.

[0020] In the drawing: mounting frame 1, strip-shaped long hole 101, fixed clamping hook 2, movable clamping hook 3, support block 4, push-pull type quick clamp 5, support plate 6, bracket 7, motor controller 8, sliding block 9, sliding frame 10, milling cutter 11, sliding rail 12, bearing sleeve 13, rotating shaft 14, belt transmission mechanism 15, screw rod transmission mechanism 16, hand wheel 17, driving device 18, steel rail 19. DETAILED DESCRIPTION

[0021] The embodiments of the present patent are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present patent, and cannot be understood as a limitation of the present patent.

[0022] As Figures 1-4As shown, the utility model relates to a kind of rail bottom welding protuberance milling and grinding machine, including one mounting frame 1, the mounting frame 1 is the rectangular frame by two long plates and two short plates by screw detachable connection.It is two fixed clamps 2 that are symmetrically fixed on the long plate outside one end of mounting frame 1, two support blocks 4 are symmetrically welded on the middle two sides of mounting frame 1, and two push-pull quick clamps 5 are symmetrically installed by support block 4, the front end of the pull rod of push-pull quick clamp 5 is respectively connected with movable clamps 3, and the movable clamps 3 are slidably connected with mounting frame 1 and correspond with fixed clamps 2 one by one, for slidingly cooperate with fixed clamps 2 and clamp the steel rail to be milled and ground.In fixed clamps 2 and movable clamps 3 respectively be equipped with corresponding clamping groove, clamping groove is right trapezoidal and inner bottom surface is flush with the upper end surface of mounting frame 1, so as to clamp the steel rail to be milled and ground.

[0023] Bar-shaped long hole 101 is respectively arranged on the two long plates of mounting frame 1 along its length direction, and stepped slider 9 is inserted in bar-shaped long hole through sliding clearance cooperation, and movable clamps 3 are respectively connected with slider 9 penetrating bar-shaped long hole through screw, so as to facilitate the longitudinal sliding of movable clamps 3 along mounting frame 1.

[0024] Two slide rails 12 are symmetrically fixed in the inner side of two long plates in mounting frame 1, and sliding frame 10 is slidably installed by two slide rails 12 and two groups of sliders, driving device 18 and rotating shaft 14 are installed on sliding frame 10 along vertical direction, driving device 18 is direct current driving motor, and output end is connected with lower end of rotating shaft 14 through belt transmission mechanism 15.In the end of sliding frame 10 close to movable clamps 3, bearing sleeve 13 is installed, rotating shaft 14 is installed in bearing sleeve 13 through bearing, and milling cutter 11 is fixedly installed on the upper end of rotating shaft 14, for milling and grinding rail bottom welding protuberance under the drive of driving device 18;Preferably, milling cutter 11 is disc milling cutter.

[0025] Lead screw transmission mechanism 16 is connected between the end of mounting frame 1 away from fixed clamps 2 and sliding frame 10, for driving sliding frame 10 to slide to realize the feeding of milling cutter 11.The lead screw of lead screw transmission mechanism 16 is rotatably installed on mounting frame 1 through an axle sleeve, and nut is fixed on sliding frame 10 through screw.Hand wheel 17 is arranged on the outer end of lead screw of lead screw transmission mechanism 16, so as to control lead screw.

[0026] Two support plates 6 are symmetrically fixed on the end of mounting frame 1 away from fixed clamps 2, and bracket 7 is fixedly supported by two support plates 6 and screw, motor controller 8 is fixed on bracket 7 through screw, and motor controller 8 is electrically connected with driving motor, for controlling the work of driving motor.

[0027] In operation, firstly, the welded to-be-milled rail 19 is placed on the installation frame 1 and clamped in the clamping groove of the fixed clamping hook 2, then the handle of the push-pull quick clamp 5 is turned upward, the movable clamping hook 3 is driven to slide forward by the pull rod of the push-pull quick clamp 5 to clamp the to-be-milled rail 19, the driving motor is started by the motor controller, and the milling cutter 11 and the rotating shaft 14 are driven to rotate rapidly by the belt transmission mechanism.

[0028] Then the screw of the screw transmission mechanism 16 is uniformly rotated by the hand wheel, the sliding frame 10 is driven to slide forward by the screw nut, and the feeding of the milling cutter 11 is realized. During the feeding, the number of rotations and the feeding speed are adjusted according to the welding material and the rail bottom welding bump state of the on-site rail, so as to avoid the risks of motor stop, blade damage and splashing caused by rapid shaking of the hand wheel. When the milling cutter 11 is exposed on the other side of the rail, it indicates that the rail bottom milling work is completed, and the milling cutter can be quickly retracted to the side of the operator.

[0029] Finally, the driving motor is turned off, the handle of the push-pull quick clamp 5 is turned downward, the movable clamping hook 3 is driven to slide backward to release the rail, and the milled rail can be taken out.

[0030] The above is only the preferred specific implementation manner of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A rail head weld protrusion milling machine comprising a mounting frame, characterised by: Two fixed clamps are symmetrically arranged at one end of the mounting frame, two push-pull type quick clamps are symmetrically arranged at two sides of the mounting frame, and a movable clamp is connected to the front end of the pull rod of each push-pull type quick clamp, the movable clamp is in sliding connection with the mounting frame and corresponds to the fixed clamp, and is used for clamping the steel rail to be milled and ground together with the fixed clamp. A sliding frame is slidably arranged in the mounting frame through two slide rails, a driving device and a rotating shaft are arranged on the sliding frame, the output end of the driving device is in transmission connection with the rotating shaft, a milling cutter is arranged on the upper end of the rotating shaft, and the milling cutter is used for milling and grinding the rail bottom welding bump under the driving of the driving device. A lead screw transmission mechanism is connected between the mounting frame and the sliding frame, and is used for driving the sliding frame to slide to realize the feeding of the milling cutter.

2. A rail head weld protrusion milling machine according to claim 1, characterised in that: The mounting frame is a rectangular frame which is detachably connected by two long plates and two short plates.

3. A rail head weld protrusion milling machine according to claim 2, characterised in that: Strip-shaped long holes are arranged on the two long plates of the mounting frame, and sliding blocks are arranged in the strip-shaped long holes through sliding gap cooperation, the movable clamps are connected with the sliding blocks penetrating through the strip-shaped long holes, so that the movable clamps slide along the mounting frame.

4. A rail head weld protrusion milling machine according to claim 1, characterized in that: The driving device is a driving motor which is connected with the rotating shaft through a belt transmission mechanism.

5. A rail head weld protrusion milling machine according to claim 1, characterized in that: The milling cutter is a disc milling cutter.

6. A rail head weld protrusion milling machine according to claim 1, characterized in that: The lead screw of the lead screw transmission mechanism is rotatably arranged on the mounting frame, and the nut is fixed on the sliding frame.

7. A rail head weld protrusion milling machine according to claim 1, characterized in that: Corresponding clamping grooves are arranged on the fixed clamps and the movable clamps, the clamping grooves are right trapezoidal and the inner bottom surface is flush with the upper end surface of the mounting frame, so as to clamp the steel rail to be milled and ground.

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