Transverse limiting device for floating slab track

Abstract

The utility model provides a transverse limiting device for a floating slab track, which is characterized in that a base is fixed on the side wall of a floating slab, and a telescopic guide rod pointing to the inner wall of the base along the horizontal direction is arranged on the base; the outer wall of the telescopic guide rod is provided with a blocking piece corresponding to the end, away from the base, of the buffering sleeve. The sliding seat is fixed to the inner wall of the base and right faces the telescopic guide rod, and the side, corresponding to the telescopic guide rod, of the sliding seat is a rolling face so as to be in sliding fit with the telescopic guide rod. The buffer sleeve is arranged for lateral buffering of the floating plate, and the telescopic guide rod is in sliding fit with the rolling surface of the sliding seat, so that the sliding friction force can be reduced in the longitudinal displacement process, and the service life of the buffer sleeve is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of subway tracks, and particularly relates to a lateral limiting device for a floating slab track. Background Art

[0002] Urban rail transit has developed rapidly as a new mode of transportation. During subway operation, the tracks are used most frequently. Since subway lines are relatively long, there are certain difficulties in maintenance and repair. To improve the inspection efficiency of subway tracks, in the prior art, a detachable floating slab is provided on the subway track base, and a buffer plate is filled between the side of the floating slab and the inner wall of the base, which can disperse the lateral impact force on the floating slab when the locomotive passes by. However, the friction between the buffer plate and the floating slab and the base is relatively large, and the floating slab is prone to wear during longitudinal buffering, and needs to be replaced and overhauled regularly.

[0003] Therefore, an improved technical solution is needed to address the above deficiencies in the prior art. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the above deficiencies in the prior art, and the utility model provides a lateral limiting device for a floating slab track.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A lateral limiting device for a floating slab track, comprising:

[0007] A base fixed on the side wall of the floating slab, and a telescopic guide rod is provided on the base and points horizontally towards the inner wall of the base;

[0008] A buffer sleeve sleeved on the outer wall of the telescopic guide rod, and a stop member corresponding to the end of the buffer sleeve away from the base is provided on the outer wall of the telescopic guide rod;

[0009] A sliding seat fixed on the inner wall of the base and facing the telescopic guide rod, and one side of the sliding seat corresponding to the telescopic guide rod is a rolling surface for sliding cooperation with the telescopic guide rod.

[0010] Preferably, a plurality of ball grooves are arranged in an array on the rolling surface, and balls are assembled in the ball grooves, and the balls protrude from the rolling surface and abut against the telescopic guide rod.

[0011] Preferably, the gap between two adjacent balls is smaller than the diameter of the telescopic guide rod.

[0012] Preferably, an external thread is provided on the outer wall of the telescopic guide rod, and the stop member is threadedly assembled on the telescopic guide rod.

[0013] Preferably, the two stoppers are closely attached to each other to correspondingly stop the buffer sleeve.

[0014] Preferably, the telescopic guide rod is a piston tube, and the piston rod of the piston tube is fixed on the base.

[0015] Preferably, an installation groove corresponding to the limiting device is provided on the side of the floating plate.

[0016] Beneficial effects: A buffer sleeve is provided for lateral buffering of the floating plate. The rolling surfaces of the telescopic guide rod and the sliding seat are in sliding fit, so that the sliding friction can be reduced during the longitudinal displacement, thereby ensuring the service life of the buffer sleeve. Description of the Drawings

[0017] The schematic diagrams in the specification, which form a part of this application, are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. Among them:

[0018] Figure 1 is the assembly schematic diagram of the lateral limiting device in the specific embodiment provided by the present utility model;

[0019] Figure 2 is Figure 1 the sectional view taken along the line A-A in

[0020] Figure 3 is the structural schematic diagram of the lateral limiting device in the specific embodiment provided by the present utility model.

[0021] In the figures: 1, base; 2, floating plate; 3, lateral limiting device; 4, installation groove; 5, longitudinal limiting device; 301, base; 302, buffer sleeve; 303, telescopic guide rod; 304, stopper; 305, sliding seat; 306, ball. Detailed Description of the Embodiments

[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present utility model.

[0023] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected" and "connection" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0024] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0025] like Figures 1-3 As shown, a floating plate track transverse limit device is provided, wherein an assembly groove corresponding to the floating plate 2 is provided above the subway track, the width and thickness of the floating plate 2 are adapted to the width and thickness of the assembly groove, and a plurality of transverse limit devices 3 are provided on both sides of the floating plate 2. Generally speaking, each side of each floating plate 2 is provided with no less than three transverse limit devices 3, and the transverse limit device 3 comprises a base 301, a buffer sleeve 302, and a sliding seat 305. The base 301 is a square metal plate, and the base 301 is fixed to the side wall of the floating plate 2. The corners of the base 301 are provided with a plurality of screw holes, and the base 301 is fixedly connected to the floating plate 2 by embedded bolts or expansion bolts. A telescopic guide rod 303 pointing to the inner wall of the base 1 in the horizontal direction is provided on the base 301, and the telescopic guide rod 303 limits the buffering direction of the transverse limit device 3 to ensure that the transverse limit device 3 is moved along the width of the floating plate 2 The telescopic guide rod 303 is telescopically extended in the width direction of the floating plate 2, and a stopper 304 corresponding to the end of the buffer sleeve 302 away from the base 301 is provided on the outer wall of the telescopic guide rod 303, so that the buffer sleeve 302 applies a buffering force to the telescopic guide rod 303. The sliding seat 305 is fixed to the inner wall of the base 1, and the inner wall of the base 1 is a longitudinal surface corresponding to the floating plate 2. The sliding seat 305 is opposite to the telescopic guide rod 303, so as to cushion the telescopic guide rod 303. In order to reduce friction, a rolling surface is provided on the side of the sliding seat 305 corresponding to the telescopic guide rod 303, and the rolling surface can be slidably matched with the telescopic guide rod 303, so that no force is generated on the buffer sleeve 302 during the longitudinal displacement, and no damage is generated to the telescopic guide rod 303.

[0026] In an alternative embodiment, the sliding seat 305 is a square metal plate with screw holes provided at the corners of the sliding seat 305, so as to be fixed to the inner wall of the base 1 through embedded bolts or expansion bolts. A plurality of ball grooves are arranged in an array on the rolling surface. The ball grooves are hemispherical. Balls 306 are assembled in the ball grooves. After the balls 306 protrude from the rolling surface, they abut against the telescopic guide rod 303. In order to ensure the limitation of the balls 306, a positioning plate is provided on the sliding seat 305. The positioning plate is adapted to the shape of the sliding seat 305. Through holes corresponding to the balls 306 (slightly smaller than the balls 306) are provided on the positioning plate. The positioning plate is fixed to the sliding seat 305, so that the balls 306 protrude from the positioning plate and are fixed by the positioning plate, ensuring the stable assembly of the balls 306 during use. Lubricating oil is provided between the balls 306 and the ball grooves.

[0027] In this embodiment, the gap between two adjacent balls 306 is smaller than the diameter of the telescopic guide rod 303, so as to ensure that there is always a ball 306 abutting against the end of the telescopic guide rod 303 at any position, thus ensuring the rolling friction of the telescopic guide rod 303 at all times.

[0028] In this embodiment, external threads are provided on the outer wall of the telescopic guide rod 303. The stopper 304 is threadedly assembled on the telescopic guide rod 303. The buffer elasticity and the length of the lateral limiting device 3 can be limited according to the actual situation, so as to ensure the assembly accuracy. The buffer sleeve 302 is a spring, and its elasticity is specifically selected according to actual needs. The two stoppers 304 that are mutually close are correspondingly used to stop the buffer sleeve 302. The stopper 304 is a circular plate with a notch or a hexagonal outer wall structure provided at its edge, which is convenient for twisting.

[0029] In an alternative embodiment, the telescopic guide rod 303 is a piston tube. External threads corresponding to the stopper 304 are provided on the outer wall of the main body of the piston tube. The piston rod of the piston tube is fixed to the base 301, thus realizing fixation.

[0030] In an alternative embodiment, an installation groove 4 corresponding to the limiting device is provided on the side of the floating plate 2. The axial length of the installation groove 4 is adapted to the length of the lateral limiting device 3. Bolts are embedded at the bottom of the installation groove 4 for fixing the base 301.

[0031] In this embodiment, the bottom surface of the installation groove 4 in the middle of the base 1 is a horizontal and flat surface. A longitudinal limiting device 5 is provided between the bottom of the installation groove 4 and the floating plate 2. Notches are provided at both ends of the floating plate 2 to form inspection holes after relative docking, which is convenient for maintenance and disassembly.

[0032] A longitudinal limiting device 5 is provided inside the floating slab 2. A plurality of longitudinal limiting devices 5 are circumferentially distributed evenly around the floating slab 2, and the number can be 6 - 8. Alternatively, two rows of longitudinal limiting devices 5 are distributed on both sides of the floating slab 2. After the longitudinal limiting device 5 extends downward from the floating slab 2, it abuts against the bottom surface of the assembly groove. The longitudinal limiting device 5 includes a sleeve and a buffer member. The sleeve is a metal cylinder with open ends at both ends. The sleeve is embedded in the floating slab 2 during the casting process of the floating slab 2. The two ends of the sleeve extend to the upper and lower surfaces of the floating slab 2 respectively. A cover plate is detachably connected to the upper end of the sleeve, and the cover plate seals the upper end of the sleeve, so that a buffer member can be placed in the sleeve. The buffer member can elastically expand and contract longitudinally for buffering. One end of the buffer member abuts against the lower surface of the cover plate, and the other end extends downward and abuts against the bottom surface of the assembly groove.

[0033] A stepped platform is provided at the upper end of the inner cavity of the sleeve. The stepped platform is used to support the cover plate. The sleeve is fixed to the stepped platform through a plurality of bolts. The distance from above the stepped platform to the sleeve is greater than the thickness of the cover plate, so that the position of the cover plate can be adjusted as needed, thereby meeting the fine adjustment of the floating slab 2.

[0034] In another embodiment, the buffer member can be a hydraulic jack. By lifting the shock absorber of the whole floating slab 2, the purpose of shock absorption upgrade can be achieved. At this time, eccentric holes are provided on the cover plate in an eccentric distribution, and the pipeline of the hydraulic jack extends upward through the eccentric holes, so as to meet the installation and control of the hydraulic jack.

[0035] In an alternative embodiment, at least one flange is provided on the outer wall of the sleeve. The flange is welded and fixed to the sleeve and is located in the middle of the outer wall of the sleeve. The flange is embedded in the floating slab 2, so as to increase the fixing ability and stability of the sleeve.

[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A floating plate track transverse limit device, characterized in that: include: A base, the base being fixed to the side wall of the floating plate, and the base being provided with a telescopic guide rod pointing to the inner wall of the base in a horizontal direction; A buffer sleeve, the buffer sleeve is sleeved on the outer wall of the telescopic guide rod, and a stopper is provided on the outer wall of the telescopic guide rod corresponding to an end of the buffer sleeve away from the base; A sliding seat is fixed on the inner wall of the base and faces the telescopic guide rod. A rolling surface is provided on one side of the sliding seat corresponding to the telescopic guide rod to slide with the telescopic guide rod.

2. The floating plate track transverse limiting device according to claim 1, characterized in that: The rolling surface is provided with a plurality of ball grooves distributed in an array, and balls are installed in the ball grooves. After the balls extend out of the rolling surface, they abut against the telescopic guide rods.

3. The floating plate track transverse limiting device according to claim 2, characterized in that: The gap between two adjacent balls is smaller than the diameter of the telescopic guide rod.

4. The floating plate track transverse limiting device according to claim 1, characterized in that: The outer wall of the telescopic guide rod is provided with an external thread, and the stopper is threadedly assembled on the telescopic guide rod.

5. The floating plate track transverse limiting device according to claim 4, characterized in that: The two stoppers are closely attached to each other and correspondingly stop the buffer sleeve.

6. The floating plate track transverse limiting device according to claim 4, characterized in that: The telescopic guide rod is a piston tube, and the piston rod of the piston tube is fixed on the base.

7. The floating plate track transverse limiting device according to claim 1, characterized in that: The side of the floating plate is provided with a mounting groove corresponding to the limiting device.

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