CN112012059B

CN112012059B - Hydraulic rail stretcher for railway

Info

Publication number: CN112012059B
Application number: CN202010786520.5A
Authority: CN
Inventors: 谢忠雷
Original assignee: Hunan Weiping Technology Development Co ltd
Current assignee: HUNAN WEIPING TECHNOLOGY DEVELOPMENT Co.,Ltd.
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2021-11-26
Anticipated expiration: 2040-08-07
Also published as: CN112012059A

Abstract

The invention relates to the technical field of rail transit equipment, and discloses a hydraulic rail stretcher for railways, which comprises two rail clamping devices, wherein through holes are formed in the left side and the right side of each rail clamping device, a rotating shaft is movably sleeved in each rail clamping device, a rotating part is fixedly connected to the middle of the rotating shaft, a hydraulic cylinder is movably sleeved at one end of the rotating part, a clamping block is fixedly connected to the other end of the rotating part, and supporting ejector rods movably sleeved with the rail clamping devices are arranged above and below one side of the clamping block. Through orthotic devices's setting, when the rail clamp is tight to the rail and is stretched after pressing from both sides, can drive two sets of bracing pieces of bilateral symmetry and move to the inboard in step, extrude trapezoidal piece through the inclined plane of depression bar, force trapezoidal piece to rail one side slip to extrude spring and roof, rectify two sections rails that will dock through the extrusion of both sides roof, guarantee the centering nature of two sections rails, be convenient for follow-up processing work to the rail.

Description

Hydraulic rail stretcher for railway

Technical Field

The invention relates to the technical field of rail transit equipment, in particular to a hydraulic steel rail stretcher for a railway.

Background

The hydraulic rail tensioner is mainly applied to seamless stress diffusion of steel rails and laying of long rails on railways, and after a seamless line stress diffusion operation is performed, a rail fastener is loosened, the temperature of a steel rail reaches a standard requirement, the stress of the steel rail reaches a state of freely releasing, a pre-calculated pulling force is applied to ensure the clearance between the rail rails, and the hydraulic rail tensioner is specifically operated as follows: after the whole machine is installed on the steel rail, the inclined iron of the clamp body at one end is knocked by a hammer, after the pressing is determined, the length of the stretching oil cylinder is adjusted by a hydraulic pump station, then the inclined iron of the clamp body at the other end is pressed, the inclined iron is directly driven by a hydraulic cylinder station, the piston moves, and the steel rail is clamped more and more tightly by the inclined iron along with the increase of the tensile force, so that the steel rail is clamped to move in the stretching direction and the stretching direction, and further the stress dissipation of a line and the laying of a long rail are realized.

However, the existing hydraulic rail stretching machine has the following defects in the actual operation process: firstly, the traditional hydraulic steel rail stretcher mainly clamps the steel rail by means of friction between the inclined iron and the steel rail, the steel rail is slowly clamped and clamped by means of matching of a clamp and the inclined iron in the process of stretching, so that sliding friction between the inclined iron and the steel rail is changed into static friction, the inclined iron is used as a wearing part, excessive wear is easily caused by the inclined iron facing the surface of the steel rail in the stretching process, the friction force can be greatly reduced, the condition that the friction resistance is smaller than the tensile force of a hydraulic cylinder occurs, the inclined iron moves along with an inclined iron seat, the slipping phenomenon occurs, the steel rail cannot be clamped to achieve stretching, and therefore the inclined iron needs to be frequently replaced; secondly, traditional rail stretcher is when tensile to the rail, is difficult to guarantee that two rail have good centering nature, and the condition of dislocation easily appears in the tensile back of accomplishing promptly, both ends rail laminating department leads to can not carrying out follow-up processing maintenance work to the rail, needs to aim at again and stretch, wastes time and energy.

Disclosure of Invention

Aiming at the defects of the background technology, the invention provides the hydraulic rail stretcher for the railway, which has the advantages of good clamp clamping effect, difficult slipping and good rail centering property, and solves the problems in the background technology.

The invention provides the following technical scheme: the utility model provides a hydraulic pressure rail stretcher for railway, includes two rail clamping devices, the through-hole has all been seted up to rail clamping device's the left and right sides, the rotation axis has been cup jointed in rail clamping device's inside activity, the middle part fixedly connected with of rotation axis rotates the piece, the pneumatic cylinder has been cup jointed in the one end activity of rotating the piece, the other end fixedly connected with grip block that rotates the piece, the top and the below of grip block one side all are provided with the support ejector pin that cup joints with rail clamping device activity, two the inboard equal fixedly connected with bracing piece of rail clamping device, the equipment casing has been cup jointed in the other end activity of bracing piece, the installation cavity has been seted up to the inside of equipment casing, the installation cavity is inside to be provided with orthotic devices.

Preferably, the horizontal section of one side of the clamping block is in an equiangular trapezoid shape, the other side of the clamping block is provided with an inclined slope surface which is symmetrical up and down, and one end of the supporting ejector rod is provided with an inclined surface matched with the inclined slope surface of the clamping block.

Preferably, the rotating member can rotate inside the rail clamping device through the rotating shaft.

Preferably, the support rod comprises a connecting rod, one end of the connecting rod is fixedly connected with a support spring, the other end of the support spring is fixedly connected with a pressing rod, and the other end of the pressing rod is provided with an inclined plane.

Preferably, orthotic devices includes the trapezoidal piece, the bevel connection is domatic has been seted up to the both sides of the one end of trapezoidal piece, the other end fixedly connected with of trapezoidal piece has the spring that a plurality of groups equidistance were arranged, the other end fixedly connected with roof of spring, the both ends of roof all are provided with spacing arch.

Preferably, one end of the top plate close to the rail is movably sleeved with a plurality of groups of metal rollers which are arranged at equal intervals.

The invention has the following beneficial effects:

1. through the setting of grip block and support ejector pin, after the rail clamping device is installed on the rail, the pneumatic cylinder begins to stretch out and draw back, the pulling rotates the piece rotation, make the trapezoidal sloping of grip block one end press from both sides tight to the sloping iron, carry out tensile work, if the sloping iron leads to when frictional force is not enough because of reasons such as excessive wear, then rotate the piece and then can drive the sloping iron and slide along the rail surface slowly, when the grip block rotates to contact with support ejector pin, the sloping surface of the bevel is domatic can support the ejector pin jack-up and make support ejector pin and rail upper and lower both sides contact this moment, turn into the holding power about the perpendicular to rail with keeping away of grip block horizontal direction, make the grip block realize the dual clamp to the rail through the cooperation of sloping iron and support ejector pin, guarantee the grip effect of rail clamping device, the phenomenon of skidding can not appear in the assurance.

2. Through orthotic devices's setting, when the rail clamp is tight to the rail and is stretched after pressing from both sides, can drive two sets of bracing pieces of bilateral symmetry and move to the inboard in step, extrude trapezoidal piece through the inclined plane of depression bar, force trapezoidal piece to rail one side slip to extrude spring and roof, rectify two sections rails that will dock through the extrusion of both sides roof, guarantee the centering nature of two sections rails, be convenient for follow-up processing work to the rail.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a top view of the structure of the present invention;

FIG. 3 is a front view of the present invention;

FIG. 4 is a schematic view of the inside of the rail clamp of the present invention;

FIG. 5 is a schematic structural view of the present invention;

FIG. 6 is an enlarged view of the structure A of the present invention;

FIG. 7 is an enlarged view of the structure B of the present invention;

FIG. 8 is a schematic view of a clamping block of the present invention.

In the figure: 1. a rail clamp; 2. a through hole; 3. a rotating shaft; 4. a rotating member; 5. a hydraulic cylinder; 6. a clamping block; 7. supporting the ejector rod; 8. a support bar; 81. a connecting rod; 82. supporting a spring; 83. a pressure lever; 9. an equipment housing; 10. a mounting cavity; 11. a corrective device; 111. a trapezoidal block; 112. a spring; 113. a top plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, a hydraulic rail stretcher for railway comprises two rail clamping devices 1, through holes 2 are respectively formed in the left side and the right side of each rail clamping device 1, a rotating shaft 3 is movably sleeved in each rail clamping device 1, a rotating member 4 is fixedly connected to the middle of each rotating shaft 3, a hydraulic cylinder 5 is movably sleeved at one end of each rotating member 4, a clamping block 6 is fixedly connected to the other end of each rotating member 4, supporting ejector rods 7 movably sleeved with the rail clamping devices 1 are respectively arranged above and below one side of each clamping block 6, supporting rods 8 are respectively fixedly connected to the inner sides of the two rail clamping devices 1, each supporting rod 8 comprises a connecting rod 81, one end of each connecting rod 81 is fixedly connected with a supporting spring 82, each supporting spring 82 has the function that each supporting rod 8 can adapt to different distances for the rail clamping devices 1 to clamp a rail, a pressing rod 83 is fixedly connected to the other end of each supporting spring 82, an inclined plane is formed at the other end of each pressing rod 83, and an equipment shell 9 is movably sleeved at the other end of each supporting rod 8, an installation cavity 10 is formed in the equipment shell 9, and a correction device 11 is arranged in the installation cavity 10.

Wherein, the horizontal section of one side of the clamping block 6 is equiangular trapezoid, the other side of the clamping block 6 is provided with an inclined surface which is symmetrical up and down, one end of the supporting ejector rod 7 is provided with an inclined surface which is matched with the inclined surface of the clamping block 6, after the rail clamping device 1 is installed on a rail, the hydraulic cylinder 5 begins to stretch and retract, the rotating piece 4 is pulled to rotate, so that the inclined iron is clamped by the inclined surface which is trapezoidal at one end of the clamping block 6, stretching is carried out, if the friction force of the inclined iron is insufficient due to excessive wear and the like, the rotating piece 4 can drive the inclined iron to slowly slide along the surface of the rail, when the clamping block 6 rotates to contact with the supporting ejector rod 7, the inclined surface can jack up the supporting ejector rod 7 and make the supporting ejector rod 7 contact with the upper side and the lower side of the rail, the horizontal direction separation of the clamping block 6 is converted into a supporting force which is vertical to the rail, so that the clamping block 6 realizes double clamping of the rail through the cooperation of the inclined iron and the supporting ejector rod 7, the clamping effect of the rail clamping device 1 is ensured, and the phenomenon of slipping is avoided.

Wherein, rotating 4 can rotate in clamping track ware 1 inside through rotation axis 3, through the rotation that rotates 4, can adjust the contained angle between 6 trapezoidal inclined planes of grip block and the rail, make it can adapt to the tapered iron of different angles, even the tapered iron is serious after long-term work, still can adjust through rotating 4 rotations of piece, guarantees that the tapered iron can carry out centre gripping work.

Wherein, orthotic devices 11 includes trapezoidal piece 111, the bevel connection is domatic has been seted up to the both sides of the one end of trapezoidal piece 111, the spring 112 that a plurality of groups equidistance of other end fixedly connected with of trapezoidal piece 111 were arranged, spring 112's other end fixedly connected with roof 113, roof 113's both ends all are provided with spacing arch, when clamp rail ware 1 stretches after pressing from both sides tight the steel rail, can drive two sets of bracing pieces 8 of bilateral symmetry and move to the inboard in step, the inclined plane through depression bar 83 extrudees trapezoidal piece 111, force trapezoidal piece 111 to slide on one side of the rail, and extrude spring 112 and roof 113, the extrusion through roof 113 of both sides is rectified two sections rails that will dock, guarantee the centering nature of two sections rails, be convenient for follow-up processing work to the rail.

Wherein, the metal gyro wheel that a plurality of groups equidistance were arranged is cup jointed in the one end activity that roof 113 is close to the rail, can turn into the rolling frictional force with the sliding friction power of roof 113 and rail through setting up the metal gyro wheel, reduces the friction, and it is great to prevent that roof 113 from appearing the clamping-force when carrying out the centre gripping to the rail in advance, has increased the tensile frictional resistance of both ends rail, avoids appearing aggravating pneumatic cylinder 5 burden, appears the problem of pneumatic cylinder 5 damage.

The working principle is that when the rail clamping device 1 is arranged on a rail, the hydraulic cylinder 5 begins to extend and retract to pull the rotating piece 4 to rotate, so that the trapezoidal inclined plane at one end of the clamping block 6 clamps the inclined iron for stretching, if the friction force of the inclined iron is insufficient due to excessive abrasion and the like, the rotor 4 will drive the wedge to slide slowly along the rail surface, and when the clamping block 6 is rotated to contact the support ram 7, at the moment, the inclined port slope can jack the supporting mandril 7 and make the supporting mandril 7 contact with the upper side and the lower side of the steel rail, the horizontal separation of the clamping block 6 is converted into a supporting force vertical to the upper side and the lower side of the steel rail, so that the clamping block 6 realizes double clamping of the steel rail through the matching of the inclined iron and the supporting mandril 7, meanwhile, the two sections of steel rails to be butted are corrected through the extrusion of the top plates 113 at the two sides, so that the centering performance of the two sections of steel rails is ensured, and the subsequent processing work on the steel rails is facilitated.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a hydraulic pressure rail stretcher for railway, includes two rail clamping device (1), its characterized in that: the rail clamping device comprises rail clamping devices (1), through holes (2) are formed in the left side and the right side of each rail clamping device (1), a rotating shaft (3) is sleeved in the rail clamping devices (1), a rotating piece (4) is fixedly connected to the middle of the rotating shaft (3), a hydraulic cylinder (5) is sleeved at one end of the rotating piece (4), a clamping block (6) is fixedly connected to the other end of the rotating piece (4), supporting ejector rods (7) movably sleeved with the rail clamping devices (1) are arranged above and below one side of the clamping block (6), supporting rods (8) are fixedly connected to the inner sides of the two rail clamping devices (1), an equipment shell (9) is sleeved at the other end of each supporting rod (8), an installation cavity (10) is formed in the equipment shell (9), a correcting device (11) is arranged in the installation cavity (10), each correcting device (11) comprises a trapezoidal block (111), bevel has been seted up to the both sides of the one end of trapezoidal piece (111) domatic, spring (112) that the other end fixedly connected with a plurality of groups equidistance of trapezoidal piece (111) was arranged, other end fixedly connected with roof (113) of spring (112), the both ends of roof (113) all are provided with spacing arch, bracing piece (8) are including connecting rod (81), one end fixedly connected with spring (82) of connecting rod (81), other end fixedly connected with depression bar (83) of spring (82), the inclined plane has been seted up to the other end of depression bar (83).

2. The hydraulic rail stretching machine for railway of claim 1, wherein: the horizontal cross section of one side of each clamping block (6) is in an equiangular trapezoid shape, the inclined surface which is symmetrical up and down is formed in the other side of each clamping block (6), and the inclined surface which is matched with the inclined surface of each clamping block (6) is formed in one end of each supporting ejector rod (7).

3. The hydraulic rail stretching machine for railway of claim 1, wherein: the rotating piece (4) can rotate inside the rail clamping device (1) through the rotating shaft (3).

4. The hydraulic rail stretching machine for railway of claim 1, wherein: one end of the top plate (113) close to the rail is movably sleeved with a plurality of groups of metal rollers which are arranged at equal intervals.