CN113718564A - Fastener device for turnout and turnout - Google Patents
Fastener device for turnout and turnout Download PDFInfo
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- CN113718564A CN113718564A CN202110953155.7A CN202110953155A CN113718564A CN 113718564 A CN113718564 A CN 113718564A CN 202110953155 A CN202110953155 A CN 202110953155A CN 113718564 A CN113718564 A CN 113718564A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/62—Rail fastenings incorporating resilient supports
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
- E01B19/003—Means for reducing the development or propagation of noise
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/68—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The embodiment of the invention provides a fastener device for a turnout, which comprises: the upper backing plate is provided with a first abutting surface and a first positioning hole penetrating through the upper backing plate along the thickness direction of the upper backing plate, and the first abutting surface faces to one lateral side of the upper backing plate; the lower cushion plate is stacked below the upper cushion plate and provided with a second abutting surface and a positioning bulge protruding out of the top surface of the lower cushion plate, and the second abutting surface is positioned on one lateral side of the first abutting surface; the positioning bulge is inserted into the first positioning hole, and the positioning sleeve is arranged on the positioning bulge and clamped between the positioning bulge and the inner wall of the first positioning hole; the transverse elastic piece is clamped between the first abutting surface and the second abutting surface and can stretch out and draw back along the transverse direction. The fastener device in the embodiment of the invention absorbs transverse vibration energy through the transverse elastic piece, reduces transverse vibration impact between the upper backing plate and the lower backing plate, reduces noise and lightens the workload and cost of line maintenance.
Description
Technical Field
The invention belongs to the technical field of rail transit, and particularly relates to a fastener device for a turnout and the turnout.
Background
In recent years, urban rail transit construction in China enters a rapid development stage.
In the running process of rail transit, the impact between wheels and steel rails causes the vibration of the steel rails to increase, and the generated noise radiation influences the normal life of people around; meanwhile, the vibration of the steel rail is increased, the increase of the impact force between the wheels and the rail is further intensified, the defects of wavy abrasion of the steel rail and the like are caused, and the maintenance work and the cost of the rail line are greatly increased.
The turnout serves as a necessary connecting device for changing the direction of the track. Compared with a normal line, when the train passes through the turnout position, the friction and the impact between the steel rail and the wheels are more severe, and the generated noise and vibration are also more severe.
Disclosure of Invention
In view of the above, it is desirable to provide a fastening device capable of damping vibration of a switch.
In order to achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:
the embodiment of the invention provides a fastener device for a turnout, which comprises:
the upper backing plate is provided with a first abutting surface and a first positioning hole penetrating through the upper backing plate along the thickness direction of the upper backing plate, and the first abutting surface faces one transverse side of the upper backing plate;
the lower cushion plate is overlapped below the upper cushion plate and provided with a second abutting surface and a positioning bulge protruding out of the top surface of the lower cushion plate, and the second abutting surface is positioned on one lateral side of the first abutting surface;
the positioning boss is inserted into the first positioning hole, and the positioning sleeve is arranged on the positioning boss and clamped between the positioning boss and the inner wall of the first positioning hole;
the transverse elastic piece is clamped between the first abutting surface and the second abutting surface and can stretch out and retract along the transverse direction.
In some embodiments, the lower bolster includes a lower bolster body and at least one blocking shoulder, the positioning protrusion is located on the lower bolster body, the blocking shoulder extends upwards along a vertical direction, the blocking shoulder is located on a transverse outer side of the lower bolster, the first abutting surface is arranged on an edge of the upper bolster facing the blocking shoulder, and the second abutting surface is arranged on one side of the blocking shoulder facing the upper bolster.
In some embodiments, the lower cushion plate body is formed with two retaining shoulders at two opposite ends in the transverse direction, and the upper cushion plate is located between the two retaining shoulders.
In some embodiments, the transverse elastic member includes an elastic body, two ends of the elastic body in the transverse direction abut against the first abutting surface and the second abutting surface, and the elastic body can be elastically deformed in the transverse direction.
In some embodiments, the transverse elastic member includes a damping assembly, the damping assembly includes an expansion member and a damping member, an accommodating cavity is provided in the damping member, a mounting hole which transversely penetrates through an inner wall corresponding to the accommodating cavity is provided on the damping member, the expansion member is arranged in the mounting hole in a penetrating manner and can move along transverse expansion and contraction relative to the damping member, the damping member can apply resistance to the expansion member to suppress rebound of the elastic body, one of the expansion member or the damping member is connected with the first abutting surface, and the other is connected with the second abutting surface.
In some embodiments, the elastic body is provided with a mounting cavity which transversely penetrates through the elastic body, and the damping assembly is arranged in the mounting cavity.
In some embodiments, the accommodating cavity is filled with damping liquid, the telescopic part comprises a piston part and a rod part, the piston part is arranged at one end of the rod part, the rod part is arranged in the mounting hole in a penetrating manner, the piston part is positioned in the accommodating cavity and divides the accommodating cavity into a rod cavity and a rodless cavity along the transverse direction, and a damping channel for communicating the rod cavity and the rodless cavity is arranged between the piston part and the inner wall corresponding to the accommodating cavity.
In some embodiments, the telescopic member includes a moving rod and an electromagnetic coil, the electromagnetic coil is disposed at one end of the moving rod and located in the accommodating cavity, the moving rod is inserted into the mounting hole, a permanent magnet is transversely disposed in the damping member, and the electromagnetic coil cuts a magnetic induction line generated by the permanent magnet during the transverse movement of the moving rod, so that the telescopic member is subjected to a resistance force opposite to the moving direction of the telescopic member.
In some embodiments, the fastener device includes a locking cover plate, the positioning protrusion is provided with a second positioning hole, the second positioning hole penetrates through the lower pad plate along the thickness direction of the lower pad plate, the locking cover plate is provided with a third positioning hole, the third positioning hole penetrates through the locking cover plate along the thickness direction of the locking cover plate, the locking cover plate is covered on the upper surface of the positioning protrusion, and a projection of the second positioning hole along the extension direction of the third positioning hole is located within the range of the third positioning hole.
In some embodiments, one of the lower surface of the locking cover plate or the upper surface of the positioning projection is provided with a positioning block, and the other is provided with a positioning groove, and the positioning block is inserted into the positioning groove.
In some embodiments, the lower surface of the locking cover plate is provided with a plurality of first adjusting teeth arranged at intervals in the transverse direction, the upper surface of the positioning protrusion is provided with a plurality of second adjusting teeth arranged at intervals in the transverse direction, and the first adjusting teeth and the second adjusting teeth are meshed with each other.
In some embodiments, the positioning sleeve is cylindrical, a positioning flange is arranged on the upper portion of the positioning sleeve in the vertical direction, the positioning flange protrudes out of the outer surface of the positioning sleeve in the radial direction, the lower surface of the positioning flange is abutted to the top surface of the upper backing plate, one of the inner surface of the positioning sleeve or the surface of the positioning protrusion is provided with a limiting protrusion, the other one of the inner surface of the positioning sleeve or the surface of the positioning protrusion is provided with a limiting groove, and the limiting protrusion is embedded into the limiting groove.
In some embodiments, the fastener device includes a longitudinal buffer member, the longitudinal elastic member is sandwiched between the upper pad and the lower pad, and the longitudinal elastic member can be elastically deformed in a vertical direction.
Embodiments of the present invention further provide a switch, which includes a rail, a sleeper, and the fastener device of any one of the foregoing embodiments, wherein the rail is laid on the top surface of the upper pad, and the lower pad is disposed on the top surface of the sleeper.
The fastener device in the embodiment of the invention absorbs the transverse vibration energy conducted by the steel rail through the transverse elastic part, reduces the vibration impact between the upper backing plate and the lower backing plate, reduces the risks of deformation, cracking and other problems of the upper backing plate and the lower backing plate under long-term vibration, prolongs the service life of the fastener device, indirectly reduces the vibration impact between a train and the steel rail, and achieves the effects of reducing noise and reducing the workload and cost of line maintenance.
Drawings
FIG. 1 is a schematic semi-sectional view of a clip assembly, a rail and a sleeper in accordance with an embodiment of the present invention;
FIG. 2 is a schematic view of an upper backing plate according to an embodiment of the present invention;
FIG. 3 is a schematic view of the upper backing plate of FIG. 2 from another perspective;
FIG. 4 is a schematic view of a lower backing plate according to an embodiment of the present invention;
FIG. 5 is an enlarged schematic view of position B of FIG. 4;
FIG. 6 is an enlarged view of position A of FIG. 1 in accordance with an embodiment of the present invention;
FIG. 7 is a schematic view of the damper assembly of FIG. 6;
FIG. 8 is an enlarged view of the same position as position A in FIG. 1 according to another embodiment of the present invention;
FIG. 9 is a schematic view of the damper assembly of FIG. 8;
FIG. 10 is a schematic view of a retaining sleeve in accordance with an embodiment of the present invention;
FIG. 11 is a schematic view of a locking cover in an embodiment of the invention.
Description of the reference numerals
A lower pad plate 10; a second abutment surface 10 a; a positioning boss 11; the second positioning hole 11 a; a positioning groove 11 b; a limit groove 11 c; a second regulating tooth 111; a shoulder 12; a positioning projection 121; a lower pad body 13; an upper pad 20; a first abutment surface 20 a; a first positioning hole 20 b; a transverse elastic member 30; an elastic body 31; a damping assembly 32; the expansion piece 321; a rod portion 3211; a piston portion 3212; a moving rod 3213; an electromagnetic coil 3214; a damping member 322; the accommodation chamber 322 a; a rod cavity 322 b; a rodless cavity 322 c; damping channel 322 d; a permanent magnet 3221; a positioning sleeve 40; a positioning flange 41; a stopper protrusion 42; a locking cover plate 50; the third positioning hole 50 a; a first regulating tooth 51; a positioning block 511; a longitudinal buffer 60; a road pillow 70; rail 80
Detailed Description
It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.
In the description of the present application, the "up," "down," "top," "bottom," "lateral," "longitudinal," "vertical" orientations or positional relationships are based on the orientations or positional relationships illustrated in FIG. 1, it being understood that these orientation terms are merely used to facilitate the description of the present application and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
In the related art, the turnout mostly adopts an elastic base plate to reduce the vertical static rigidity of the fastener device so that the fastener device has a certain vibration damping effect. However, the mode of reducing the vertical static rigidity has an upper limit of vibration reduction, and the vertical rigidity is reduced while the transverse strength is weakened, so that the dynamic gauge expansion is increased, the snake-shaped movement of wheels in the running process of a train is aggravated, the running safety of the train is influenced, the problems of uneven light band of a rail surface or corrugation and the like are easily caused, and the running and maintenance cost is greatly increased.
The embodiment of the present invention provides a fastening device for a switch, which comprises an upper pad 20, a lower pad 10, a positioning sleeve 40 and a transverse elastic member 30, referring to fig. 1 to 10.
The upper cushion plate 20 is provided with a first abutting surface 20a and a first positioning hole 20b penetrating through the upper cushion plate 20 in the thickness direction of the upper cushion plate 20, and the first abutting surface 20a faces one lateral side of the upper cushion plate 20; the lower cushion plate 10 is overlapped below the upper cushion plate 20, the lower cushion plate 10 is provided with a second abutting surface 10a and a positioning bulge 11 which is protruded out of the top surface of the lower cushion plate 10, and the second abutting surface 10a is positioned at one lateral side of the first abutting surface 20 a; the positioning protrusion 11 is inserted into the first positioning hole 20b, and the positioning sleeve 40 is disposed on the positioning protrusion 11 and sandwiched between the positioning protrusion 11 and the inner wall of the first positioning hole 20 b.
The upper base plate 20 and the lower base plate 10 are connected to form a whole through the limitation between the positioning sleeve 40 and the positioning protrusion 11 and the limitation between the positioning sleeve 40 and the inner wall of the first positioning hole 20b, so that the upper base plate and the lower base plate can be integrally carried and installed, the fastener device can be prefabricated and then carried to a construction site for installation and debugging, the installation efficiency is improved, and the construction site can be conveniently managed.
The upper and lower backing plates 20 and 10 may be made of nodular cast iron, Q345 steel, etc.
It is understood that the positioning sleeve 40 is made of an elastic material to make the positioning sleeve 40 fit with the positioning protrusion 11 and the inner wall of the first positioning hole 20 b. For example, the positioning sleeve 40 is made of nylon material.
The lateral elastic member 30 is interposed between the first contact surface 20a and the second contact surface 10a, and the lateral elastic member 30 is laterally stretchable.
A rail 80 is laid on the top surface of the upper shim plate 20. When the train passes through the section, the generated vibration is transmitted to the upper mat 20 through the rail 80, and the upper mat 20 is vibrated in a lateral direction. The transverse elastic element 30 is clamped between the first abutting surface 20a and the second abutting surface 10a, so that transverse vibration generated by the upper backing plate 20 can be transmitted to the transverse elastic element 30, and the transverse elastic element 30 can transversely stretch along with the transverse vibration of the upper backing plate 20 by utilizing the transverse stretching characteristic of the transverse elastic element 30, so that part of energy of the transverse vibration of the upper backing plate 20 is absorbed, transverse vibration impact is reduced, a buffering effect is achieved, and the probability of loosening and damage of structural elements at other positions on a circuit caused by the transverse vibration is also reduced.
Meanwhile, the transverse elastic piece 30 reduces the impact force transmitted by the upper cushion plate 20 to the positioning sleeve 40 and the lower cushion plate 10, reduces the probability of deformation failure of the positioning sleeve 40 under the action of long-term impact, reduces the probability of mutual separation caused by the occurrence of gaps between the lower cushion plate 10 and the positioning sleeve 40 and between the upper cushion plate 20 and the positioning sleeve 40 due to the deformation of the positioning sleeve 40, and improves the service life of the fastener device.
The fastener device in the embodiment of the invention absorbs the transverse vibration energy conducted by the steel rail 80 through the transverse elastic part 30, reduces the transverse vibration impact between the upper backing plate 20 and the lower backing plate 10, reduces the risks of deformation, cracking and the like of the upper backing plate 20 and the lower backing plate 10 under long-term vibration, prolongs the service life of the fastener device, indirectly reduces the transverse vibration impact between a train and the steel rail 80, and has the effects of reducing noise and reducing the workload and cost of line maintenance.
It is to be understood that the specific installation position of the lateral elastic member 30 is not limited to the relationship between the upper and lower mats 20 and 10.
In some embodiments, referring to fig. 1 to 5, the lower mat 10 includes a body 13 of the lower mat 10 and at least one blocking shoulder 12, the positioning protrusion 11 is located on the body 13 of the lower mat 10, the blocking shoulder 12 extends upward along a vertical direction, the blocking shoulder 12 is located on a lateral outer side of the lower mat 10, the first abutting surface 20a is disposed on an edge of the upper mat 20 facing the blocking shoulder 12, and the second abutting surface 10a is disposed on a side of the blocking shoulder 12 facing the upper mat 20.
The shoulder 12 is matched with the edge of the upper backing plate 20, so that the transverse elastic piece 30 can be conveniently installed between the first abutting surface 20a and the second abutting surface 10a from top to bottom, and on one hand, the observation and adjustment of an installer in the installation process of the fastener device are convenient; on the other hand, the service condition of the transverse elastic piece 30 can be conveniently observed and detected by maintainers in the subsequent use process, so that the transverse elastic piece can be repaired and replaced in time, and the safety is improved.
It can be understood that providing the first abutment surface 20a at the edge of the upper cushion plate 20 can avoid providing an additional structure to arrange the first abutment surface 20a, reducing the manufacturing cost of the upper cushion plate 20. The transverse outer side of the lower cushion plate 10 is provided with the retaining shoulder 12, on one hand, the retaining shoulder 12 has simple structure and is easy to process and manufacture; on the other hand, the original lower base plate and the related manufacturing die in the related technology can be modified, so that the manufacturing cost is reduced, and the production efficiency is improved.
It is understood that the specific number of the blocking shoulders 12 is not limited, wherein, in the embodiment where a plurality of the blocking shoulders 12 are provided, the plurality of the blocking shoulders 12 should be arranged at positions that facilitate the installation of the upper cushion plate 20 and the exertion of the cushioning effect of the lateral elastic member 30.
In some embodiments, referring to fig. 1, 4 and 5, the body 13 of the lower mat 10 is formed with shoulders 12 at opposite ends in the transverse direction, and the upper mat 20 is positioned between the shoulders 12. On one hand, the upper backing plate 20 is positioned between the two retaining shoulders 12, so that the fastener device is convenient for positioning between the upper backing plate 20 and the lower backing plate 10 in the mounting process, and the mounting speed is improved; on the other hand, two transverse opposite ends of the lower cushion plate 10 body 13 are provided with two retaining shoulders 12, so that one transverse elastic part 30 can be respectively installed at the two ends, the movement of two transverse degrees of freedom can be buffered, and the effect of reducing vibration and impact of the fastener device is improved.
In some embodiments, referring to fig. 6 to 9, the transverse elastic member 30 includes an elastic body 31, two ends of the elastic body 31 in the transverse direction abut against the first abutting surface 20a and the second abutting surface 10a, and the elastic body 31 can be elastically deformed in the transverse direction. The elastic body 31 plays a role of buffering by deformation and rebound thereof to absorb energy of the lateral vibration impact. The elastomer 31 itself is a complete structure, easy to install and easy to maintain and replace.
The specific form of the elastic body 31 is not limited, such as a spring, a rubber damper block, and the like.
The proper specification of the elastic body 31 is selected according to the magnitude of the impact load applied in the field, so that the service life of the elastic body 31 meets the expected design criteria.
The elastic body 31 may be connected to the first contact surface 20a and the second contact surface 10a, for example, by bonding; the elastic body 31 may be compressed and interposed between the first contact surface 20a and the second contact surface 10a, and the elastic body 31 may be caused to rebound and then brought into contact with the first contact surface 20a and the second contact surface 10a, thereby maintaining a constant amount of compression of the elastic body 31.
It will be appreciated that after the train passes through the switch, the load applied to the elastic body 31 disappears, and the elastic body 31 will rebound back and forth many times to push the upper tie plate 20 to move back and forth. Therefore, an auxiliary structure is installed on the fastener device to suppress the excessive rebound of the elastic body 31, so that the upper cushion plate 20 can be rapidly restored to be static, and the influence of the transverse vibration generated by the rebound of the elastic body 31 on other structural members on the rail is reduced.
In some embodiments, referring to fig. 6 to 9, the transverse elastic member 30 includes a damping member 32, the damping member 32 includes an expansion member 321 and a damping member 322, an accommodating cavity 322a is disposed in the damping member 322, a mounting hole (not shown) is disposed on the damping member 322 and transversely penetrates through an inner wall corresponding to the accommodating cavity 322a, the expansion member 321 is disposed in the mounting hole and can transversely extend and retract relative to the damping member 322, the damping member 322 can apply a resistance to the expansion member 321 to suppress the rebound of the elastic member 31, one of the expansion member 321 or the damping member 322 is connected to the first abutting surface 20a, and the other is connected to the second abutting surface 10 a.
The damper unit 32 is connected between the first contact surface 20a and the second contact surface 10a, and the telescopic member 321 and the damper 322 are capable of performing telescopic movement in the lateral direction, and the damper 322 is capable of applying resistance to the movement of the telescopic member 321 in the lateral direction.
When a train passes through a turnout, vibration in the transverse direction is generated between the upper bolster 20 and the lower bolster 10, so that the telescopic piece 321 is pushed to move in the direction towards the damping piece 322 or in the direction away from the damping piece 322, and meanwhile, the damping piece 322 applies acting force to the telescopic piece 321 for inhibiting the telescopic piece 321 from moving in the transverse direction. In this case, the damping member 32 performs a function of damping lateral vibration in cooperation with the elastic body 31.
After the train passes through the turnout, due to the rebound effect of the elastic body 31, the elastic body 31 pushes the upper backing plate 20 to generate reciprocating movement along the transverse direction, and the damping assembly 32 is connected with the upper backing plate 20, so that the upper backing plate 20 can drive the telescopic piece 321 or the damping piece 322 to move along the transverse direction, and due to the acting force applied by the damping piece 322 to the telescopic piece 321 for inhibiting the telescopic piece 321 to move along the transverse direction, the transverse movement of the upper backing plate 20 is inhibited. In this case, the damping unit 32 suppresses the rebound of the elastic body 31, thereby reducing the lateral vibration of the upper mat 20 due to the rebound of the elastic body 31, and enabling the upper mat 20 to be rapidly stabilized.
It can be understood that by limiting the moving stroke of the telescopic member 321 in the accommodating cavity 322a, the possibility of plastic deformation of the elastic body 31 due to over-compression is reduced, thereby prolonging the service life of the elastic body 31. For example, the dimension of the telescopic member 321 in the transverse direction is greater than the critical dimension of the elastic body 31 in the transverse direction, and when the damping assembly 32 is compressed in the transverse direction to a state where the telescopic member 321 abuts against the inner wall corresponding to the accommodating cavity 322a, the elastic body 31 is still in an elastically deformed state, so that the elastic body 31 can rebound normally after the vibration load in the transverse direction contacts.
The connection method of the damper element 32 to the first contact surface 20a and the second contact surface 10a is not limited, and for example, bonding, screwing, or the like may be used.
It will be appreciated that a force transfer plate (not shown) is provided at an end of the telescoping member 321 distal from the damping member 322 and/or an end of the damping member 322 distal from the telescoping member 321, the force transfer plate extending in a direction perpendicular to the transverse direction. The contact area is increased through the force transfer plate, the pressure on the damping assembly 32 is reduced, the moving direction of the expansion piece 321 is parallel to the transverse direction, and the probability that the damping assembly 32 fails and is damaged due to the influence of longitudinal component force is reduced.
It will be appreciated that the arrangement between the elastomer 31 and the damper assembly 32 may cooperate to reduce the chance of failure due to slippage between the two.
In some embodiments, referring to fig. 6 and 8, the elastic body 31 is provided with a mounting cavity (not labeled) extending transversely through the elastic body 31, and the damping assembly 32 is disposed in the mounting cavity. The elastic body 31 and the damping component 32 can be limited, so that the possibility that the elastic body 31 and the damping component 32 slide along the longitudinal direction and are separated from the contact with the first abutting surface 20a or the second abutting surface 10a is reduced.
It will be appreciated that the mounting cavity provides some sealing of the damper assembly 32, which reduces the possibility that foreign matter will enter the receiving cavity 322a and prevent the expansion member 321 from moving laterally.
It will be appreciated that a limiting mechanism is provided to limit the damping assembly 32 between the first abutment surface 20a and the second abutment surface 10 a.
For example, referring to fig. 4, 5, 6 and 8, a positioning protrusion 121 is provided on the second contact surface 10a, a positioning groove (not shown) is provided on the side of the damping member 322 facing the second contact surface 10a, and the positioning protrusion 121 is fitted into the positioning groove. By the cooperation of the positioning protrusions 121 and the positioning grooves, the tendency of the damping assembly 32 to move in the longitudinal direction is suppressed, and positioning during installation of the damping assembly 32 is also facilitated.
It will be appreciated that the particular manner in which damping member 322 applies resistance to the lateral telescoping movement of telescoping member 321 is not limited.
In some embodiments, referring to fig. 6 and 7, the accommodating cavity 322a is filled with damping fluid, the telescopic member 321 includes a piston portion 3212 and a rod portion 3211, the piston portion 3212 is disposed at one end of the rod portion 3211, the rod portion 3211 is disposed in the mounting hole, the piston portion 3212 is located in the accommodating cavity 322a and divides the accommodating cavity 322a into a rod cavity 322b and a rod-free cavity 322c along a transverse direction, and a damping channel 322d communicating the rod cavity 322b and the rod-free cavity 322c is disposed between the piston portion 3212 and an inner wall corresponding to the accommodating cavity 322 a. By virtue of the liquid-incompressible property, the damping liquid flows between the rod chamber 322b and the rod-less chamber 322c through the damping channel 322d, thereby changing the volume of the rod chamber 322b and the rod-less chamber 322c so that the piston portion 3212 can move in the lateral direction in the accommodating chamber 322 a. Therefore, the damping member 322 exerts a force on the expansion member 321 to suppress the expansion member 321 from moving in the lateral direction, by the resistance of the piston portion 3212 during the liquid flow.
Because the moving amount of the piston portion 3212 in the accommodating cavity 322a is proportional to the flow rate of the damping fluid in the damping channel 322d, the resistance applied to the piston portion 3212 during the moving process can be adjusted by adjusting the cross-sectional size of the damping channel 322d, so as to adapt to different lateral vibration impact load conditions.
It will be appreciated that the damping fluid is a fluid having a suitable viscosity coefficient and which is not susceptible to temperature changes, such as hydraulic oil.
In some embodiments, referring to fig. 8 and 9, the telescopic member 321 includes a moving rod 3213 and an electromagnetic coil 3214, the electromagnetic coil 3214 is disposed at one end of the moving rod 3213 and located in the accommodating cavity 322a, the moving rod 3213 is inserted into the mounting hole, a permanent magnet 3221 is disposed in the damping member 322 along the transverse direction, and the electromagnetic coil 3214 cuts a magnetic induction line generated by the permanent magnet 3221 during the transverse movement along with the moving rod 3213, so that the telescopic member 321 is subjected to a resistance force opposite to the moving direction thereof. The magnetic flux of the electromagnetic coil 3214 changes during the movement within the magnetic field range generated by the permanent magnet 3221, and due to the electromagnetic induction effect, a current is generated in the electromagnetic coil 3214 to enable the electromagnetic coil 3214 to generate a magnetic field, and the magnetic field generated by the electromagnetic coil 3214 and the magnetic field generated by the permanent magnet 3221 repel each other, so that the effect that the damping member 322 exerts an acting force on the expansion member 321 to suppress the expansion member 321 from moving in the transverse direction is achieved.
It can be understood that the size and positional relationship between the electromagnetic coil 3214 and the permanent magnet 3221 are such that when the expansion member 321 is moved laterally toward the damping member 322 to an extreme position, the electromagnetic coil 3214 does not completely enter the range of uniform magnetic induction generated by the permanent magnet 3221. So that the magnetic flux of the electromagnetic coil 3214 is constantly changing during the movement, ensuring that the telescopic member 321 is always able to receive resistance against its movement during the movement in the lateral direction.
It will be appreciated that auxiliary structures may be provided on the upper and lower mats 20 and 10 to facilitate the installation of the fastener devices to predetermined locations on the sleeper 70.
In some embodiments, referring to fig. 5 and 11, the fastening device includes a locking cover plate 50, the positioning protrusion 11 is provided with a second positioning hole 11a, the second positioning hole 11a penetrates through the lower pad plate 10 along the thickness direction of the lower pad plate 10, the locking cover plate 50 is provided with a third positioning hole 50a, the third positioning hole 50a penetrates through the locking cover plate 50 along the thickness direction of the locking cover plate 50, the locking cover plate 50 covers the upper surface of the positioning protrusion 11, and the projection of the second positioning hole 11a along the extending direction of the third positioning hole 50a is located within the range of the third positioning hole 50 a.
Through setting up locking cover plate 50, prevent that position sleeve 40 from following vertically deviating from, make upper padding plate 20, position sleeve 40 and lower bolster 10 become an organic whole, the fastener device of being convenient for carries and installs. The mounting bolts (not shown) can be sequentially inserted through the third positioning holes 50a and the second positioning holes 11a from top to bottom until being screwed with the tie 70, so that the fastener device is fixedly connected with the tie 70.
The locking cover plate 50 is abutted to the mounting bolt, so that the positioning protrusion 11 and the positioning sleeve 40 are prevented from being directly abutted to the mounting bolt, the pressure intensity borne by the positioning protrusion 11 is reduced, and the probability that the positioning protrusion 11 is deformed and damaged due to extrusion of the mounting bolt is reduced.
In some embodiments, referring to fig. 9 and 11, one of the lower surface of the locking cover 50 or the upper surface of the positioning projection 11 is provided with a positioning block 511, and the other is provided with a positioning groove 11b, and the positioning block 511 is inserted into the positioning groove 11 b. Through the mutual matching of the positioning block 511 and the positioning groove 11b, the probability that the mounting bolt is in direct contact with the positioning sleeve 40 or the positioning protrusion 11 due to the fact that the locking cover plate 50 and the positioning protrusion 11 move relatively during mounting of the mounting bolt is reduced, and the mounting position of the locking cover plate 50 deviates.
It will be appreciated that a certain gap is left between the mounting bolt and the inner wall of the second positioning hole 11a so that the mounting position of the fastener device to the pillow 70 is adjusted in the lateral direction.
In some embodiments, referring to fig. 5 and 11, the lower surface of the locking cover plate 50 is provided with a plurality of first adjusting teeth 51 arranged at intervals in the transverse direction, the upper surface of the positioning protrusion 11 is provided with a plurality of second adjusting teeth 111 arranged at intervals in the transverse direction, and the first adjusting teeth 51 and the second adjusting teeth 111 are engaged with each other.
After the mounting bolts are fixedly connected with the sleepers 70, the relative positions of the mounting bolts and the sleepers are kept unchanged. The first adjusting teeth 51 are separated from the second adjusting teeth 111, a transverse force is applied to the lower bolster 10 so that the lower bolster 10 can move in the transverse direction by using a gap between the inner wall of the second positioning hole 11a and the mounting bolt, and then the first adjusting teeth 51 are re-engaged with the second adjusting teeth 111, so that the lower bolster 10 can move in the transverse direction by one or more tooth pitches relative to the sleeper 70 due to the transverse spacing arrangement of the first adjusting teeth 51 and the second adjusting teeth 111 and the limiting and guiding effects of the shape of the first adjusting teeth 51 and the second adjusting teeth 111.
Therefore, in combination with the above-described operation, in the case where the mass of the fastening device is large, which is inconvenient to control the lateral movement of the lower tie plate 10 more precisely, the lower tie plate 10 can be moved in the lateral direction by an integral multiple of the pitch, so that the lower tie plate 10 is moved in the lateral direction to within the preset installation range of the sleeper 70, thereby facilitating the adjustment of the position of the rail 80 during construction.
It will be appreciated that the pitch of the first adjustment tooth 51 and the second adjustment tooth 111 is sized to combine the positioning accuracy required for the rail 80 in field construction.
In the embodiment with the first and second adjusting teeth 51 and 111, referring to fig. 5 and 11, the positioning block 511 and the positioning slot 11b extend in the transverse direction, so that during the adjustment of the first and second adjusting teeth 51 and 111, a portion of the positioning block 511 can still be located in the positioning slot 11b, preventing the locking cover 50 from rotating relative to the positioning projection 11 to make the first and second adjusting teeth 51 and 111 not engaged.
It can be understood that a corresponding limit structure is provided on the positioning sleeve 40 to reduce the risk of separation between the positioning sleeve 40 and the upper and lower backing plates 20, 10.
In some embodiments, referring to fig. 5 and 10, the positioning sleeve 40 is cylindrical, a positioning flange 41 is disposed at an upper portion of the positioning sleeve 40 in the vertical direction, the positioning flange 41 protrudes from an outer surface of the positioning sleeve 40 in the radial direction, and a lower surface of the positioning flange 41 abuts against a top surface of the upper backing plate 20. The positioning flange 41 limits the upper tie plate 20 in the longitudinal direction, so that the tendency of the upper tie plate 20 in the vertical direction is limited, and the possibility of displacement of the upper tie plate 20 during the transportation of the fastener device is reduced.
In some embodiments, referring to fig. 5 and 10, one of the inner surface of the positioning sleeve 40 or the surface of the positioning protrusion 11 is provided with a limiting protrusion 42, and the other is provided with a limiting recess 11c, and the limiting protrusion 42 is embedded in the limiting recess 11 c. The mutual matching between the limit protrusion 42 and the limit groove 11c can restrain the tendency of relative movement between the positioning sleeve 40 and the positioning protrusion 11 along the longitudinal direction, and reduce the possibility that the positioning sleeve 40 is separated from the positioning protrusion 11 during the carrying of the fastener device.
It will be appreciated that additional structure may be provided in the fastener device to dampen longitudinal vibratory impacts.
In some embodiments, referring to fig. 1, the fastening device includes a longitudinal buffer 60 interposed between the upper pad 20 and the lower pad 10, and the longitudinal buffer 60 is elastically deformable in a vertical direction. Therefore, the fastener device can absorb vibration impact in the transverse direction and the longitudinal direction at the same time, and a better buffering effect is achieved.
The present embodiment also provides a switch comprising a rail 80, a tie 70 and a fastener device of any one of the previous embodiments, the rail 80 being laid on the top surface of the upper shim plate 20 and the lower shim plate 10 being disposed on the top surface of the tie 70. Through using this switch, can reduce the noise and the vibration that the train produced at the in-process through this switch, improved the life and the driving safety of switch.
The various embodiments/implementations provided herein may be combined with each other without contradiction.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (14)
1. A fastener device for a switch, said fastener device comprising:
the upper backing plate is provided with a first abutting surface and a first positioning hole penetrating through the upper backing plate along the thickness direction of the upper backing plate, and the first abutting surface faces one transverse side of the upper backing plate;
the lower cushion plate is overlapped below the upper cushion plate and provided with a second abutting surface and a positioning bulge protruding out of the top surface of the lower cushion plate, and the second abutting surface is positioned on one lateral side of the first abutting surface;
the positioning boss is inserted into the first positioning hole, and the positioning sleeve is arranged on the positioning boss and clamped between the positioning boss and the inner wall of the first positioning hole;
the transverse elastic piece is clamped between the first abutting surface and the second abutting surface and can stretch out and retract along the transverse direction.
2. The fastener device according to claim 1, wherein the lower base plate includes a lower base plate body and at least one shoulder, the positioning protrusion is located on the lower base plate body, the shoulder extends upward in a vertical direction, the shoulder is located on a lateral outer side of the lower base plate, the first abutting surface is disposed on an edge of the upper base plate facing the shoulder, and the second abutting surface is disposed on a side of the shoulder facing the upper base plate.
3. The fastener device according to claim 2, wherein the lower cushion body is formed with retaining shoulders at opposite ends thereof in the lateral direction, and the upper cushion is positioned between the retaining shoulders.
4. The fastener device according to claim 1, wherein the lateral elastic member includes an elastic body, both ends of the elastic body in the lateral direction abut against the first abutting surface and the second abutting surface, and the elastic body is elastically deformable in the lateral direction.
5. The fastener device according to claim 4, wherein the transverse elastic member includes a damping member, the damping member includes an expansion member and a damping member, the damping member has a receiving cavity therein, the damping member has a mounting hole extending transversely through an inner wall corresponding to the receiving cavity, the expansion member is inserted into the mounting hole and can move in a transversely extending and contracting manner relative to the damping member, the damping member can apply resistance to the expansion member to suppress the rebound of the elastic member, one of the expansion member or the damping member is connected to the first abutting surface, and the other is connected to the second abutting surface.
6. A fastener device according to claim 5, wherein said elastic body is provided with a mounting cavity extending transversely therethrough, said damping member being disposed in said mounting cavity.
7. The fastener device according to claim 5, wherein the accommodating chamber contains damping fluid, the expansion member includes a piston portion and a rod portion, the piston portion is disposed at one end of the rod portion, the rod portion is inserted into the mounting hole, the piston portion is disposed in the accommodating chamber and divides the accommodating chamber into a rod chamber and a rodless chamber along a transverse direction, and a damping channel communicating the rod chamber and the rodless chamber is disposed between the piston portion and an inner wall corresponding to the accommodating chamber.
8. The fastener device according to claim 5, wherein the telescopic member includes a moving rod and an electromagnetic coil, the electromagnetic coil is disposed at one end of the moving rod and located in the accommodating cavity, the moving rod is inserted into the mounting hole, a permanent magnet is transversely disposed in the damping member, and the electromagnetic coil cuts a magnetic induction line generated by the permanent magnet during the transverse movement of the moving rod, so that the telescopic member is subjected to a resistance force opposite to the moving direction of the telescopic member.
9. The fastener device according to claim 1, wherein the fastener device includes a locking cover plate, the positioning protrusion has a second positioning hole penetrating through the lower base plate in the thickness direction of the lower base plate, the locking cover plate has a third positioning hole penetrating through the locking cover plate in the thickness direction of the locking cover plate, the locking cover plate is covered on the upper surface of the positioning protrusion, and a projection of the second positioning hole in the extending direction of the third positioning hole is located within the range of the third positioning hole.
10. The fastener device according to claim 6, wherein one of a lower surface of the locking cover plate or an upper surface of the positioning projection is provided with a positioning block, and the other is provided with a positioning groove, and the positioning block is inserted into the positioning groove.
11. The fastener device according to claim 6, wherein the lower surface of the locking cover plate is provided with a plurality of first adjusting teeth arranged at intervals in the transverse direction, the upper surface of the positioning protrusion is provided with a plurality of second adjusting teeth arranged at intervals in the transverse direction, and the first adjusting teeth and the second adjusting teeth are engaged with each other.
12. The fastener device according to claim 1, wherein the positioning sleeve is cylindrical, a positioning flange is disposed at an upper portion of the positioning sleeve in a vertical direction, the positioning flange protrudes out of an outer surface of the positioning sleeve in a radial direction, a lower surface of the positioning flange abuts against a top surface of the upper backing plate, one of an inner surface of the positioning sleeve or a surface of the positioning protrusion is provided with a limiting protrusion, the other one is provided with a limiting groove, and the limiting protrusion is embedded in the limiting groove.
13. A fastening device according to claim 1, wherein said fastening device includes a longitudinal buffer member, said longitudinal elastic member being interposed between said upper pad and said lower pad, said longitudinal elastic member being elastically deformable in a vertical direction.
14. A switch, comprising a rail, a sleeper and said fastener device of any one of claims 1-13, said rail being laid on a top surface of said upper plate and said lower plate being disposed on a top surface of said sleeper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110953155.7A CN113718564A (en) | 2021-08-19 | 2021-08-19 | Fastener device for turnout and turnout |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110953155.7A CN113718564A (en) | 2021-08-19 | 2021-08-19 | Fastener device for turnout and turnout |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113718564A true CN113718564A (en) | 2021-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110953155.7A Pending CN113718564A (en) | 2021-08-19 | 2021-08-19 | Fastener device for turnout and turnout |
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| Country | Link |
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| CN (1) | CN113718564A (en) |
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| CN113089388A (en) * | 2021-04-15 | 2021-07-09 | 周鑫 | Track fastening structure for subway vibration reduction |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004162368A (en) * | 2002-11-13 | 2004-06-10 | Bando Chem Ind Ltd | Rail elastic fastener |
| CN102330391A (en) * | 2010-07-01 | 2012-01-25 | 施维哈克股份公司 | Roller device for a switch tongue |
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Application publication date: 20211130 |