Hydraulic positioning device for steel rail polishing

Abstract

The utility model relates to a hydraulic positioning device for steel rail polishing. Comprising a lower base, a door-shaped upper support is installed on the top of the lower base, a first supporting roller and a second supporting roller which are arranged front and back and used for supporting a steel rail are further installed on the top of the lower base and the inner side of the upper support, and a hydraulic clamping assembly used for clamping and fixing the steel rail is installed on the front portion of the lower base. A supporting plate with a notch in the middle is installed on the rear portion of the lower base, guide wheel assemblies for guiding a steel rail are installed on the supporting plate and on the two sides of the notch, and a hydraulic pressing assembly for pressing and fixing the steel rail passing through the lower portion is installed on the top of the upper support. The utility model provides a hydraulic positioning device for steel rail polishing, which provides stable and reliable supporting and positioning functions for a steel rail and supports effective operation of automatic polishing equipment.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the steel rail processing equipment technical field especially relates to a hydraulic positioning device for steel rail polishing. BACKGROUND

[0002] After the steel rail is welded, rough grinding is needed, and the protruding welding tumor and welding rib are polished to make the external dimension of the welding seam meet the requirements of subsequent process steps. The rough grinding process needs to polish the welding tumor and welding rib of the welding seam rail head, rail waist and rail bottom and meet the requirements of the operation instruction. Because the cross section of the steel rail is special-shaped, the polishing process requirement is very high. Simple profiling automatic polishing equipment cannot identify and judge the polishing position, and cannot accurately control the polishing position and polishing thickness. Over-polishing or under-polishing occurs from time to time, and the polishing quality cannot meet the requirements of the welded rail base production standard. Therefore, each welded rail base still generally uses manual method to polish the welding seam, and there is a strong demand for fully automatic high-precision polishing equipment that can completely replace manual work.

[0003] The automatic polishing equipment requires stable conveying of the steel rail and stopping at the position needing polishing, and after stable fixing at the current position, a mechanical hand polishing device is used to polish the specific position. Therefore, the device for positioning the steel rail plays a key role in the operation of the automatic steel rail polishing device. In summary, the steel rail positioning device needs to be developed and designed to support the effective operation of the automatic polishing equipment. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a hydraulic positioning device for steel rail polishing, which provides stable and reliable support and positioning function for the steel rail and supports the effective operation of the automatic polishing equipment.

[0005] The utility model adopts the technical scheme: a hydraulic positioning device for steel rail polishing, which comprises a lower base, a door-shaped upper support is installed on the top of the lower base, a first support roller and a second support roller arranged in front and back and supporting the steel rail are further installed on the top of the lower base and the inner side of the upper support, a hydraulic clamping assembly for clamping and fixing the steel rail is installed on the front of the lower base, a support plate with a notch in the middle is installed on the rear of the lower base, guide wheel assemblies for guiding the steel rail are installed on the support plate and both sides of the notch, and a hydraulic pressure holding assembly for pressing and fixing the passing steel rail below is installed on the top of the upper support.

[0006] Preferably, the hydraulic clamping assembly comprises oppositely arranged first and second swing arms, the middle parts of the two are fixedly installed on the lower base through a rotating shaft, the inner sides of the middle parts of the first and second swing arms are provided with intermeshing tooth parts, and the hydraulic clamping assembly further comprises a clamping hydraulic cylinder, the end of the cylinder body of the clamping hydraulic cylinder is hingedly connected with the lower end of the first swing arm, and the end of the piston rod of the clamping hydraulic cylinder is hingedly connected with the lower end of the second swing arm.

[0007] Preferably, the inner sides of the upper ends of the first and second swing arms are both provided with a pad block, when the piston rod of the clamping hydraulic cylinder is extended, the upper ends of the first and second swing arms are synchronously swung inward, and the pad blocks are pressed on the bottom edge of the steel rail.

[0008] Preferably, the guide wheel assembly comprises wheel supports respectively arranged on the two sides of the gap, guide rollers are installed on the two wheel supports, and the middle part of the steel rail passes between the two guide rollers.

[0009] Preferably, the hydraulic clamping assembly comprises oppositely arranged first and second swing arms, the middle parts of the two are fixedly installed on the lower base through a rotating shaft, the inner sides of the middle parts of the first and second swing arms are provided with intermeshing tooth parts, and the hydraulic clamping assembly further comprises a clamping hydraulic cylinder, the end of the cylinder body of the clamping hydraulic cylinder is hingedly connected with the lower end of the first swing arm, and the end of the piston rod of the clamping hydraulic cylinder is hingedly connected with the lower end of the second swing arm.

[0010] Preferably, the hydraulic motor drives the first and / or second support rollers to rotate.

[0011] Preferably, the support plate is further provided with a pad plate, the pad plate comprises a flat part and a downwardly bent part arranged at the outer end, and the inner end of the flat part is fixedly connected with the lower edge of the gap.

[0012] Preferably, the bottom sides of the upper support are provided with fixed plates, the fixed plates are fixedly connected with the top plate of the lower base through bolts, the bottom of the lower base is welded with a bottom plate provided with a plurality of mounting holes, and a plurality of reinforcing rib plates are welded between the lower base and the bottom plate.

[0013] The utility model discloses the advantages and positive effects are:

[0014] The utility model provides a kind of hydraulic positioning device for steel rail grinding, by installing two support rollers before and after on the top of lower base, the stable support to steel rail is realized, and support guiding effect is provided to the movement of steel rail. By installing guide wheel assembly on support plate, the stable guiding effect to steel rail is realized. By installing hydraulic pressure hold assembly on upper support, after steel rail stops, the way of hydraulic pressure hold is used to fix and position steel rail, by installing hydraulic clamping device on lower base, after steel rail stops, the way of hydraulic clamping is used to fix and position steel rail. Thus, the utility model provides stable and reliable support and positioning function to steel rail, supports the effective operation of automatic polishing equipment. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic diagram of a three-dimensional structure of the utility model, front view angle;

[0016] Figure 2 is a schematic diagram of a three-dimensional structure of the utility model, rear view angle.

[0017] In the figure:

[0018] 1, bottom plate;2, reinforcing rib plate;3, lower base;4, first swing arm;5, clamping hydraulic cylinder;6, tooth part;7, second swing arm;8, cushion block;9, first support roller;10, second support roller;11, upper support;12, pressure holding hydraulic cylinder;13, guide roller;14, support plate;15, notch;16, backing plate. DETAILED DESCRIPTION

[0019] In order to further understand the invention content, characteristics and effects of the utility model, the following examples are described in detail.

[0020] Please see Figure 1 and Figure 2 The utility model discloses a hydraulic positioning device for rail polishing, which comprises a lower base 3, and a door-shaped upper support 11 is installed on the top of the lower base 3. As shown in the figure, the lower base 3 is a cage structure, which is composed of four metal side plates with windows in the middle and is welded together, and a top plate is welded and installed on the top of each metal side plate, and the bottom of the upper support 11 is fixedly connected with the top plate.

[0021] In this embodiment, the bottom of the upper support 11 is provided with a fixed plate, and the fixed plate is fixedly connected with the top plate of the lower base 3 through bolts. The hydraulic positioning device further comprises a bottom plate 1 provided with a plurality of mounting holes, and the bottom of the lower base 3 is welded and fixed with the bottom plate 1. A plurality of reinforcing rib plates 2 are welded between the lower base 3 and the bottom plate 1 to improve the overall structural strength. When the hydraulic positioning device is installed and used in the automatic polishing equipment, the bottom plate 1 is fixedly connected through bolts. In order to facilitate overall hoisting and transfer, lifting rings are further installed at the top of the lower base 3 and the top of the upper support 11.

[0022] A first support roller 9 and a second support roller 10 arranged in front and back and supporting the rail are further installed on the top of the lower base 3 and the inner side of the upper support 11. When the rail passes through the hydraulic positioning device, the first support roller 9 and the second support roller 10 stably support the rail. In this embodiment, a hydraulic motor is further included, and the hydraulic motor drives the first support roller 9 and / or the second support roller 10 to rotate, so that the hydraulic positioning device simultaneously has the function of driving and moving the rail. When running, the hydraulic motor drives the support roller to rotate and stop, and the rail moves and stops along the length direction.

[0023] The hydraulic clamping assembly for clamping and fixing the steel rail is installed at the front of the lower base 3, the support plate 14 with the notch 15 in the middle is installed at the rear of the lower base 3, the guide wheel assembly for guiding the steel rail is installed on the support plate 14 and at both sides of the notch 15, and the hydraulic pressing assembly for pressing and fixing the passing steel rail is installed on the top of the upper support 11. The guide wheel assembly provides the guiding function for the steel rail, improves the stability of the movement, and when the steel rail is moved, the hydraulic clamping assembly and the hydraulic pressing assembly release the steel rail, and when the steel rail needs to be stopped, the hydraulic clamping assembly and the hydraulic pressing assembly exert the hydraulic clamping and hydraulic pressing functions to fix and position the steel rail.

[0024] In the embodiment, the hydraulic clamping assembly includes the first swing arm 4 and the second swing arm 7 arranged oppositely, the middle parts of the two are fixed on the lower base 3 through the rotating shaft, the inner sides of the middle parts of the first swing arm 4 and the second swing arm 7 are provided with the tooth parts 6 engaged with each other, the first swing arm 4 and the second swing arm 7 are synchronized to swing through the cooperation of the tooth parts 6, and the hydraulic clamping cylinder 5 is further included, the end of the cylinder body is hingedly connected with the lower end of the first swing arm 4, and the end of the piston rod is hingedly connected with the lower end of the second swing arm 7. The piston rod of the hydraulic clamping cylinder 5 is controlled to extend and retract, so that the first swing arm 4 and the second swing arm 7 swing to clamp or release the steel rail.

[0025] The cushion blocks 8 are installed on the inner sides of the upper ends of the first swing arm 4 and the second swing arm 7, the upper ends of the first swing arm 4 and the second swing arm 7 are synchronized to swing inward when the piston rod of the hydraulic clamping cylinder 5 extends, and the cushion blocks 8 press on the bottom edge of the steel rail. The cushion blocks 8 can be rubber blocks, which play the role of gaskets to avoid rigid impact between the upper ends of the first swing arm 4 and the second swing arm 7 and the steel rail, and through the setting of the cushion blocks 8, the reliability and stability of clamping and positioning the steel rail can be improved.

[0026] In the embodiment, the guide wheel assembly includes the wheel supports respectively located at both sides of the notch 15, the guide rollers 13 are installed on the two wheel supports, and the middle part of the steel rail passes between the two guide rollers 13.

[0027] In the embodiment, the hydraulic pressing assembly includes the pressing hydraulic cylinder 12 fixed on the upper support 11, and the pressing block is installed on the lower end of the piston rod of the pressing hydraulic cylinder 12. When the piston rod of the pressing hydraulic cylinder 12 extends, the pressing block presses on the top of the steel rail.

[0028] In the embodiment, the backing plate 16 is further installed on the support plate 14, the backing plate 16 includes the flat part and the downward bent part at the outer end, the inner end of the flat part is fixedly connected with the lower edge of the notch 15, and the steel rail passes above the backing plate 16.

Claims

1. A hydraulic positioning device for rail grinding, characterized in that: The utility model provides a rail clamp and press device, which comprises a lower base (3), a door-shaped upper support (11) is installed on the top of the lower base (3), a first supporting roller (9) and a second supporting roller (10) are arranged in front and back on the top of the lower base (3) and the inner side of the upper support (11) and are used for supporting a rail, a hydraulic clamp assembly for clamping and fixing the rail is installed on the front of the lower base (3), a supporting plate (14) with a notch (15) is installed on the rear of the lower base (3), a guide wheel assembly for guiding the rail is installed on the supporting plate (14) and on both sides of the notch (15), and a hydraulic press assembly for pressing and fixing the rail passing below is installed on the top of the upper support (11).

2. The hydraulic rail positioning device for rail grinding as claimed in claim 1, characterized in that: The hydraulic clamp assembly comprises a first swing arm (4) and a second swing arm (7) arranged oppositely, the middle parts of the two swing arms are fixed on the lower base (3) through a rotating shaft, tooth parts (6) are arranged on the inner sides of the middle parts of the first swing arm (4) and the second swing arm (7) and are engaged with each other, and a clamp hydraulic cylinder (5) is further arranged, the end of the cylinder body of the clamp hydraulic cylinder (5) is hingedly connected with the lower end of the first swing arm (4), and the end of the piston rod of the clamp hydraulic cylinder (5) is hingedly connected with the lower end of the second swing arm (7).

3. The hydraulic rail positioning device for rail grinding as set forth in claim 2, wherein the hydraulic cylinder is connected to the base and the rail is connected to the piston. The inner sides of the upper ends of the first swing arm (4) and the second swing arm (7) are both provided with a pad (8), when the piston rod of the clamp hydraulic cylinder (5) is extended, the upper ends of the first swing arm (4) and the second swing arm (7) are synchronously swung inward, and the pad (8) is pressed on the bottom edge of the rail.

4. The hydraulic rail positioning device for rail grinding as defined in claim 1, wherein: The guide wheel assembly comprises wheel supports arranged on both sides of the notch (15), guide rollers (13) are arranged on the two wheel supports, and the middle part of the rail passes between the two guide rollers (13).

5. The hydraulic rail grinding positioning device of claim 1 wherein: The hydraulic press assembly comprises a press hydraulic cylinder (12) fixed on the upper support (11), a pressing block is arranged on the lower end of the piston rod of the press hydraulic cylinder (12), and when the piston rod of the press hydraulic cylinder (12) is extended, the pressing block is pressed on the top of the rail.

6. Hydraulic rail positioning device for rail grinding according to any of claims 1 to 5, characterized in that A hydraulic motor is further arranged, and the hydraulic motor drives the first supporting roller (9) and / or the second supporting roller (10) to rotate.

7. A hydraulic rail positioning device for rail grinding as claimed in any one of claims 1 to 5, characterised in that: A backing plate (16) is further arranged on the supporting plate (14), the backing plate (16) comprises a flat part and a downwardly bent part arranged at the outer end, and the inner end of the flat part is fixedly connected with the lower edge of the notch (15).

8. The hydraulic rail positioning device for rail grinding according to any one of claims 1 to 5, characterized in that: Fixed plates are arranged on the bottom of the upper support (11), the fixed plates are fixedly connected with the top plate of the lower base (3) through bolts, a bottom plate (1) with a plurality of mounting holes is further arranged, the bottom of the lower base (3) is welded with the bottom plate (1), and a plurality of reinforcing rib plates (2) are further welded between the lower base (3) and the bottom plate (1).

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