415results about "Rail fasteners" patented technology

The invention relates to a railway line rail fixing structure device, and relates to the technical field of railway track fixing, and the railway line rail fixing structure device comprises a fixing seat used for supporting a steel rail; the two embedded iron bases are located on the two sides of the fixing base correspondingly; the limiting device comprises two fixing assemblies, a buffering assembly and an adjusting assembly, and the two fixing assemblies are symmetrically arranged on the two sides of the steel rail and used for fixing the steel rail and the fixing base; the two buffering assemblies are symmetrically arranged on the two sides of the steel rail and used for buffering and damping vibration generated by acting force on the steel rail when a train passes through the steel rail. The adjusting assembly is arranged between the two buffering assemblies and used for adjusting the distance between the two buffering assemblies. The rail fixing structure has the effects that the mounting process of the rail fixing structure is simplified, the deformation resistance of the rail fixing structure is improved, and the risk of deformation or displacement of the steel rail due to external force is reduced.

The utility model relates to the field of track fixing parts, and discloses an anti-skid stable track fixing part which comprises a bottom plate, the top of the bottom plate is fixedly connected with two sets of limiting parts, the sides, close to each other, of the two sets of limiting parts are in contact with track parts, and the tops of the limiting parts are provided with mounting mechanisms. And the mounting mechanism comprises a fixing plate, a mounting groove is formed in the top of the limiting piece, the fixing plate is mounted in the mounting groove, the fixing plate is fixedly connected with the limiting piece through a bolt piece, and an elastic piece is arranged in the fixing plate. According to the utility model, the bolt piece is tightened above the fixed plate, the fixed plate displaces to drive the extrusion piece to move downwards and to be in contact with the bump, and the surface of the bump is extruded by the inclined surface at the bottom of the extrusion piece, so that the bump is subjected to transverse pressure, the transverse position of the track piece is adjusted, and the stability and the precision of track installation are improved.

The present invention relates to a railroad spike stabilizer for railway and construction applications. The stabilizer comprises a hollow, square-based prism body with four outer walls defining an internal cavity conforming to a railroad spike's geometry. The cavity, open at the top, tapers inward with angled inner walls. Segmented, flexible legs extend from the bottom, compressing and expanding to engage the tie plate hole, with clips locking the stabilizer. Flexible ribs adapt to hole variations, and a visual alignment guide ensures orientation. A spike and plug stabilizer embodiment includes a ribbed or finned plug for pre-existing holes, enhancing spike stability and reducing fatigue compared to wood plugs or polyurethane foam. The stabilizer improves alignment, reduces spike fatigue, minimizes worker injuries, and enables single-worker operations.

The present invention relates to the field of tram track laying construction. Disclosed is a method for laying a jointed ballasted track for trams on small-radius curves. In the method, by adjusting and fixing track alignment before ballast laying and track finishing, the conventional construction sequence of ballast laying and track finishing is changed, track lifting and alignment adjustment for small-radius curves are carried out prior to ballast laying and tamping, and during track laying, sleepers are densely arranged at rail joints, and concrete buttresses are added beside the sleepers to secure the sleepers in place and counteract the bending stress of rails, ensuring precise control of track alignment and elevation on the small-radius curves, and realizing laying of the jointed ballasted track for trams on the small-radius curves. After construction, ballast laying and track finishing on the small-radius curves can meet track operation requirements in a single pass, ensuring smooth and safe tram operation.

The invention relates to the technical field of polyurethane materials, in particular to a polyurethane elastic backing plate for a railway and a preparation method of the polyurethane elastic backing plate. The polyurethane elastic base plate provided by the invention is a low-compression permanent-deformation polyurethane elastic base plate for a railway, the raw materials and the preparation process of the polyurethane elastic base plate are specifically shown in the following description, and under the matching of the whole formula, the microphase separation degree of a hard section and a soft section in long-term service is effectively controlled; the polyurethane elastic backing plate not only has low compression set, but also has excellent tensile mechanical properties and static stiffness, lower-35 DEG C low-temperature static stiffness change rate, lower dynamic and static stiffness ratio and lower 30-day high-temperature aging static stiffness change rate.

The elastic wide sleeper comprises a sleeper body, the sleeper body comprises a sleeper middle part and sleeper edge parts symmetrically distributed on the two sides of the sleeper middle part, rail bearing tables are arranged on the sleeper edge parts, rail bearing grooves are formed in the rail bearing tables, the top face of the sleeper middle part is a plane, and the plane is as high as the bottom ends of the rail bearing tables on the two sides; the pillow middle part and the pillow edge parts are equal in width, and the width is larger than 500 mm. According to the elastic wide sleeper, the problems that in the prior art, stress of a sleeper and a ballast bed is concentrated, frequent maintenance and repair are needed, and the operation cost is large are solved, and the purposes of reducing the maintenance and repair frequency of a track line and reducing the operation cost are achieved.

The utility model discloses a turnout sliding bed backing plate, which belongs to the technical field of railway tracks, and comprises a bottom plate and an iron seat arranged on the bottom plate, the turnout sliding bed backing plate further comprises a sliding bed platform, the sliding bed platform is arranged on the bottom plate, a rail bearing groove is defined between the sliding bed platform and the iron seat, and the rail bearing groove is used for accommodating a railway turnout stock rail. Tongue pressing parts are arranged on the two sides of the first end, close to the iron base, of the slide plate table, the side edges, close to the bottom plate, of the tongue pressing parts are flush with the side wall of the bottom plate, gaps are formed between the side edges of the slide plate table and the side wall of the bottom plate, and pin holes are formed in the slide plate table in the direction perpendicular to the axis of the slide plate table. The structure of the slide plate table can be improved to reduce the frictional resistance when the tongue rail falls on the slide plate table to do reciprocating motion, and particularly, the structure of the tongue pressing part is optimized to solve the problem that the tongue pressing part is prone to breakage.

The utility model discloses a casting gauge apron which comprises an apron body, a pressing plate is arranged on one side of the apron body, an arc-shaped abutting plate is arranged on the other side of the apron body, a through hole is formed in the upper surface of the apron body in a penetrating mode, and an upper sleeve is arranged on the upper surface of the apron body and located at the position of the through hole. A limiting sleeve is arranged on the lower surface of the baffle and located below the through hole. Through the arrangement of the upper sleeve and the limiting sleeve, during installation operation, the gauge apron is placed between the steel rail and the apron base, the limiting groove in the limiting sleeve is in butt joint with the embedded sleeve, the embedded sleeve and the through hole are made to be located on the same vertical line, and then the screw spike can be placed in the upper sleeve; the upper sleeve is used for supporting the screw spike, so that the screw spike is in a vertical state while being aligned with the embedded sleeve, a worker can conveniently rotate the screw spike through a tool, the screw spike is in threaded connection with the embedded sleeve, and the use convenience of the device is greatly improved.

The application belongs to the technical field of rail transit damping fasteners, and particularly relates to an air spring damping fastener, which comprises an upper iron pad, an air spring isolator, a lower iron pad, an anchoring system and a spring strip pressing system, wherein the air spring isolator is arranged between the upper iron pad and the lower iron pad and forms a sealed air cavity in the air spring isolator, the air spring isolator provides elastic support and damping effect for the steel rail through compression of the air cavity, the air cavity is communicated with the outside through a valve to realize air pressure adjustment, so as to change the elastic properties of the fastener, and the fastener has adaptive supporting and damping capacity under different load conditions. By introducing the air spring isolator as a core elastic element, the fastener can automatically match the reasonable rigidity under different load conditions, and the damping performance and structural safety are considered at the same time, so that the fastener has good damping effect, load adaptive capacity and engineering application value.

The application discloses a fastener plate lower anti-stray current system, which realizes the increase of the creepage distance of the fastener system, the reduction of the surface contaminant accumulation and the prevention of the internal conductive path from being penetrated by dust, oil and water and other contaminants, thereby making the fastener system have good insulation performance during long-term use. In the application, a plate lower insulation plate with good insulation performance is arranged under the iron pad plate to realize the electrical isolation between the upper iron part of the fastener and the track bed, and the insulation coating with good insulation performance and elasticity is sprayed on the surface of the fastener to realize the filling and sealing of the gaps of the components on the upper part of the fastener, thereby preventing the decrease of the overall insulation performance of the fastener caused by long-term use. The scheme is basically consistent with the installation of the general fastener, does not increase additional processes, and will not be obviously affected by any subsequent rail adjustment, and is suitable for large-scale construction.

The invention relates to the technical field of rail shock absorbers, in particular to a liquid rubber composite rail shock absorber which comprises an upper iron base plate and a lower iron base plate which are located between a steel rail and a sleeper, the upper iron base plate is arranged close to the steel rail, the lower iron base plate is arranged close to the sleeper, and a shock absorption base plate is arranged between the upper iron base plate and the lower iron base plate. A damping unit is arranged between the upper iron base plate and the vibration reduction base plate in a matched mode, or the damping unit is arranged in the vibration reduction base plate and comprises at least two damping liquid cavities which are vertically communicated with each other, damping liquid is arranged in the damping liquid cavities, and the damping liquid can vertically flow through the damping holes. The shock absorber in the scheme can realize full-band self-adaptive variable stiffness and damping characteristics, has excellent dynamic and static stiffness ratio and good bearing performance, and is reliable in sealing and long in fatigue life.

The invention relates to a system for fastening rails (S) on a substrate (2) and to an assembly (1) built on such a system. The system comprises a slab element (3) having through openings (21, 22) leading from its upper face (14) to its bottom face (20) and comprising anchoring elements (4, 5) having anchoring element bodies (27) which, in use, are inserted into the substrate (2) and having an insertion opening defined by an end section (28) of the anchoring element body (27) for introducing a fastening element (11, 12) into the anchoring element body (27). According to the invention, a retaining section (29) laterally protruding from the end section (28) is connected to the end section (28) of the anchoring element body (27) by a connecting section (30-33) provided with a predetermined breaking point. On the bottom face (20) of the slab element (3), a retaining portion (38, 39) is provided into which the through openings (21, 22) of the slab element (3) open and into which the anchoring elements (4, 5) are retained by their retaining sections (29). The retaining portion (38, 39) forms a stop (48) for the retaining sections (29) acting in the longitudinal direction of the anchoring elements (4, 5). The inner contour of the through openings (21, 22) of the slab element (3) here adapts to the outer contour of the anchoring element bodies (27) in such a way that, after breaking of the connecting sections (30-33) of the anchoring elements (4, 5), the anchoring element bodies (27) can be moved through the through openings (21, 22) of the slab element (3).

According to the assemblable embedded track and the construction method thereof, on the basis that it is guaranteed that bolts are connected with pre-embedded sleeves corresponding to sleepers through through holes in a bottom plate, side plates on the two sides of a steel tank move outwards and are longitudinally disconnected at the positions corresponding to the pre-embedded sleeves, so that space is formed, and the inner sides of the disconnected positions of the side plates are connected through insulating plates; the insulating plates are arranged on the inner sides of the side plates on the two sides, the side plates on the two sides of the steel tank move outwards, namely, the insulating plates are additionally arranged between the steel tank and the steel rail, the clearance size in the steel tank is increased, and the steel tank is prevented from being damaged. The distance between the steel tank and the steel rail is increased; even if a large construction error occurs and the steel rail is in contact with the insulating plate, the minimum distance between the steel rail and the steel tank can still be forcibly guaranteed to be the thickness gap of the insulating plate, the insulativity of the steel rail and the steel tank is guaranteed, and the sparking risk is reduced.

The invention relates to the technical field of track shock absorbers, in particular to a floating slab vibration isolator for a liquid rubber composite track, which comprises an upper seat plate, a lower seat plate and a middle partition plate, an upper rubber body is arranged between the upper seat plate and the middle partition plate, an upper hydraulic cavity is formed between the upper rubber body and the middle partition plate, and a lower rubber body is arranged between the lower seat plate and the middle partition plate. A lower hydraulic cavity is formed between the lower rubber body and the middle partition plate, damping liquid is arranged in the upper hydraulic cavity and the lower hydraulic cavity, the damping liquid in the upper hydraulic cavity and the damping liquid in the lower hydraulic cavity can flow mutually, a containing cavity used for containing the upper rubber body is formed in the upper base plate, and a ventilation cavity is formed between the top wall of the upper rubber body and the cavity top wall of the containing cavity. A plurality of ventilation holes located above the ventilation cavity are formed in the upper seat plate, and the lower rubber body comprises an upper supporting body, a lower cover body and a middle hydraulic body. According to the vibration isolator in the scheme, metal, rubber and a flow channel structure are optimally designed, so that the ratio of dynamic stiffness to static stiffness is adjustable, and liquid sealing is reliable.

The application discloses an iron base plate insulation fastener for rail insulation laying, which comprises an iron base plate, the two sides of the iron base plate are respectively provided with an integrally formed upward protruding elastic strip insertion hole block, and are also respectively provided with a bolt hole one. The iron base plate is also provided with an iron base plate insulation sleeve, the iron base plate insulation sleeve covers at least the bottom surface and the surrounding side surface of the iron base plate in a manner of being bonded with the iron base plate, and the bottom surface of the iron base plate insulation sleeve is provided with a bolt hole two corresponding to the position of the bolt hole one (103). The iron base plate insulation sleeve covers the bottom surface and the surrounding side surface of the iron base plate, so that the iron base plate and the sleepers on the ground have a certain amount of water (containing conductive iron filings), and the surface of the iron base plate and the sleepers on the ground cannot form a conductive current through the water, thereby realizing the insulation of the iron base plate and the ground.

The clamping device comprises a base, a plurality of fixing holes are formed in the surface of the base in a linear array mode, a positioning groove is formed in the surface of the base, and a fixing clamping groove is formed in one side of the positioning groove. The other side of the positioning groove is provided with an extrusion assembly used for clamping the rail into the fixing clamping groove to be fixed based on the hydraulic effect, and the top end of the base is provided with an adjusting assembly used for manually adjusting the hydraulic pressure in the extrusion assembly so as to control the clamping force on the rail. By means of the combined design of hydraulic drive clamping and manual pressure adjustment, the operation difficulty in a narrow space is effectively reduced, meanwhile, the clamping force can be flexibly adjusted according to requirements, operation convenience and clamping stability are both considered, the structure is compact, and adaptability is high.

The utility model discloses a ballastless track bed constructed based on a hardened ballast track bed, which comprises a grouting hardening layer, a hardened layer and a foundation bed body which are sequentially arranged from top to bottom, sleepers are arranged on the grouting hardening layer at intervals along the length direction of a track, two steel rails are arranged on the sleepers side by side, and the two steel rails are arranged on the foundation bed body. The grouting hardening layer is of a layered structure formed by grouting hardening of a gravel layer of the ballast track bed, and the hardening layer is of a dense layered structure formed by sedimentation of fine particles below the gravel layer in the ballast track bed. According to the utility model, a ballast track bed can be hardened to form a ballastless track bed, so that the engineering workload of construction is effectively reduced, the construction period is shortened, and the construction cost is saved. The ballast bed hardening device is suitable for the technical field of ballast bed hardening in track construction.

This invention discloses a longitudinal reinforcement device for railway sleepers, belonging to the technical field of reinforcement for high-speed railway ballast track. The invention includes vertical pile foundations, column base flanges, and transverse baffles. Vertical pile foundations are arranged vertically on both sides of the sleeper end along the train's direction of travel. One end of each vertical pile foundation is embedded in the ground. The other ends of two vertical pile foundations located on the same side of the sleeper end are used to connect to the transverse baffles. The vertical pile foundations of adjacent sleepers are connected in series via column base flanges embedded in the ballast layer. This invention can be used for the reinforcement of sleepers on ballasted track lines.

The invention discloses an elastic strip type fastener and relates to the technical field of track fixing, the elastic strip type fastener comprises an elastic strip, a pressing plate, a pressing nut, a fixing foundation, a locking bolt and a connecting piece, the pressing plate is used for being attached to the upper portion of a steel rail bottom, the elastic strip is used for being pressed to the upper portion of the pressing plate, a hole is formed in the middle of the pressing plate, and an opening is formed in the middle of the elastic strip; the nut end of the locking bolt is arranged below the fixed foundation and can abut against the lower end face of the fixed foundation, a stud of the locking bolt can sequentially penetrate through the fixed foundation, the open hole and the opening and is in threaded connection with the pressing nut, and the bottom face of the pressing nut is used for abutting against the top face of the elastic strip. And the fixed foundation is fixedly connected with the construction foundation through a connecting piece. The invention further discloses a rail system which comprises a steel rail and the elastic strip type fastener, and the steel rail comprises a rail head, a rail web and a rail bottom which are fixedly connected in sequence. According to the invention, the buckling stability is good, the installation efficiency is high, and the technical difficulty and cost are low.

The utility model relates to the technical field of metro tracks, in particular to a vibration and noise reduction structure for metro tracks, which comprises a bearing frame, the top end of the bearing frame is fixedly connected with a bearing pad, and two connecting holes are arranged in the bearing frame. When the rail is used, the connecting bolts can penetrate through the round holes in the bearing pad to connect the rail body with the bearing frame, so that the rail body is in close contact with the bearing pad, pressure is exerted on the shock absorber body and the shock absorption spring through the bearing frame in the subway running process, and therefore the bearing frame descends in the two shock absorption frames, and the shock absorption effect is achieved. At the moment, the noise reduction pad can penetrate through a gap between the two vibration reduction frames to be in contact with the ground along with descending of the bearing frame, so that vibration of the track main body is reduced through cooperation of the bearing frame, the vibration damper main body, the vibration reduction springs and the vibration reduction frames in the running process of the subway; and noise generated during subway running can be reduced through cooperation between the bearing pad and the noise reduction pad, and the effect of improving vibration and noise reduction of the device is achieved.

The utility model discloses a rail brace which is used for supporting the outer side face of a steel rail and comprises a base, an end rib and a reinforcing bottom plate which are integrally formed. The base is a curved plate bent in two directions and abuts against a steel rail and a sleeper, a positioning structure is arranged between the base and the sleeper, and the base and the sleeper are fastened through spikes and nuts. The end ribs are positioned on two sides of the base; the reinforcing bottom plate is located on the bottom face of the base and abuts against the sleeper. The positioning structure is arranged between the base and the sleeper of the rail brace, so that the rail brace is convenient to install and position, can be matched with the sleeper more quickly, and can be matched with the sleeper to achieve the effect of abutting against a steel rail; secondly, the sleeper is prevented from slightly swinging through the spikes, and the stability of the rail brace and the safety of the sleeper are guaranteed; and thirdly, a reinforcing bottom plate is arranged on the bottom surface of the base, so that the structure and the wear resistance are enhanced. The rail brace is convenient to use, and the supporting and reinforcing effect on the steel rail is stable.

The utility model provides a railway anti -loose device relates to railway anti -loose technical field. Railway anti -loose device includes first anti -loose subassembly and second anti -loose subassembly. First anti -loose subassembly is used for setting in switch pad, and second anti -loose subassembly is used for setting on the rail. First anti -loose subassembly includes first mounting plate, first bolt and first rotation stopper, first mounting plate is provided with first clamping part and first mounting hole, and mounting plate is used for setting in switch pad, first bolt sets up in first mounting hole and is used for setting switch pad, first rotation stopper is provided with second clamping part and first limiting portion, first clamping part and second clamping part clamping cooperation, and first limiting portion is set up in first bolt, is used for with the outer wall of first bolt abutment. Thus can see, through first anti -loose subassembly can effectively carry out anti -loose to bolt or nut, to maintain the reliability of bolt connection to the structure stability and security of track system is improved.

A walking track adjusting fastener is used for connecting and fixing a steel rail and comprises a bearing mechanism, a plurality of pressing mechanisms and an adjusting mechanism, the pressing mechanisms and the adjusting mechanism are all arranged on the bearing mechanism, and the adjusting mechanism is located between the bearing mechanism and the pressing mechanisms. The bearing mechanism comprises a reference bottom plate and a plurality of fixing bolts; the pressing mechanism comprises a plurality of pressing buckle plates and a plurality of pressing bolts; the adjusting mechanism comprises an adjusting plate and an adjusting bolt. In addition, the utility model further provides a train track structure. According to the utility model, the running track adjusting fastener with the adjusting mechanism and the train track structure are designed, so that the train track can more easily, simply and conveniently adjust the posture of a steel rail; the connecting mechanism in the fastener can firmly connect the two spliced steel rails, so that the overall stability of the running track is further improved; the utility model has the advantages of strong practicability and strong popularization significance.

The application discloses a kind of replacement methods for series of high-speed turnout area elastic pad of passenger special line, including collecting high-speed turnout area original static data, obtaining turnout original geometric dimension;Remove electric switch machine;Remove the positioning device of operation area;Loosen the pad bolt and fastener T bolt on the several turnout sleeper before and after the elastic pad to be replaced;Lift the rail in operation area;The elastic pad to be replaced is moved to the turnout sleeper cross position along the longitudinal direction of rail;Remove the elastic pad to be replaced;Install new elastic pad;Reset the lifted rail, install the positioning device removed;Adjust rail, fastener system and pad bolt.The application is used to solve the problem of lack of replacement method for series of high-speed turnout area elastic pad of passenger special line in prior art, to realize the replacement of series of high-speed turnout area elastic pad of passenger special line to provide special method, to provide scientific guidance for on-site replacement operation, to improve the standardization degree of operation and other purposes.

This invention discloses an automatic construction device and method for ballastless track elevation pad blocks. The construction device includes a vehicle body, a control system mounted on the vehicle body, a material dispensing unit, a traveling device, a sensing device, a material flatcar, and a rotary motor. The material dispensing unit includes multiple dispensing components, each used to store elevation pad blocks of different thicknesses. A rotating component is located in the middle of the upper part of the vehicle body, and a rotary motor is installed inside the rotating component to drive its rotation. The multiple dispensing components are fixed to the outer periphery of the rotating component. This invention has a reasonable structure, simple operation, and modular design, enabling accurate and rapid distribution of specific elevation pad blocks of different specifications to corresponding sleepers. It avoids errors that occur with manual material dispensing, improves work efficiency without stopping the vehicle, reduces labor intensity, and automates the dispensing of elevation pad blocks during track laying and maintenance.

The invention discloses a novel steel tank type continuous supporting track and a construction method, belongs to the technical field of urban rail transit track structures, and adopts the technical scheme that a track system comprises a steel rail, a high polymer material precast block, various base plates, a split mounting type track locking structure, a bolt, a bolt sleeve, a sleeper and a track bed, according to the rail locking structure, a T-shaped side plate and a steel bottom plate are combined to form a rail bearing groove, an elastic base plate, a height adjusting base plate and a rail bottom slope base plate are sequentially laid in the rail bearing groove, a steel rail is placed on the rail bottom slope base plate, high polymer material prefabricated blocks are bonded to the two sides of a rail web through adhesives, and a rail adjusting base plate is arranged between the T-shaped side plate and the high polymer material prefabricated blocks. A prefabricated part splicing mode is adopted for construction, and after a ballast bed and a sleeper are completed, a base plate is laid, a rail bearing groove is spliced, a rail locking structure is fixed, and waterproof treatment is conducted. The technology achieves the dual effects of vibration and noise reduction, improves the smoothness of the track, simplifies the construction process, reduces the maintenance cost, and facilitates the replacement of parts and the adjustment of the position of the steel rail.

The utility model provides a high-speed maglev two-stage fine adjustment track structure which comprises a track plate, a base, a cast-in-place concrete adjusting layer, an adjustable connecting piece and a concrete bearing platform, the lower end of the base is connected to a foundation through the concrete bearing platform, the track plate is arranged above the base, and the base is connected with the track plate through the cast-in-place concrete adjusting layer. The functional area components are installed on the two sides of the track plate through adjustable connecting pieces respectively. According to the high-speed magnetic suspension two-stage fine adjustment track structure, the on-site concrete cast-in-place workload is reduced; meanwhile, in the construction process, two-stage fine adjustment of the track structure can be achieved through the cast-in-place concrete adjusting layer and the two-way adjustable connecting piece; in the operation and maintenance process, fine adjustment is achieved through the two-way adjustable connecting piece, and high smoothness of the track is guaranteed.

The utility model discloses a kind of installation structures of track, is related to the installation structure field of track.A kind of installation structure of track, including mounting seat, the two sides of the inner chamber of mounting seat are provided with Z-shaped cushion block, the two sides of Z-shaped cushion block top are provided with positioning slot, the top of Z-shaped cushion block is provided with track main body, the periphery of the bottom of track main body is equipped with locating block, the bottom of locating block is in contact with the bottom of positioning slot inner chamber, the periphery of the bottom of track main body is provided with mounting pin, the bottom of mounting pin is penetrated through the bottom of Z-shaped cushion block and is fixed with the inner chamber of mounting seat by screw thread.The utility model provides a kind of installation structure of track, by Z-shaped cushion block is put into the inner chamber of mounting seat, by locating block and positioning slot, track main body has played the role of being easily assembled, track main body can be quickly positioned when being installed, and then by bolt pin, mounting seat and Z-shaped cushion block and track main body are quickly assembled and fixed.