Self-resetting cover plate mechanism for tunnel

Abstract

The utility model relates to an underground tunnel self-resetting cover plate mechanism which comprises an underground tunnel and a coil conveying trolley moving along a running track in the underground tunnel, a winding assembly is arranged at one end of the underground tunnel, a retractable cover plate is wound on the winding assembly, the retractable cover plate is connected with the coil conveying trolley, and the coil conveying trolley is connected with the underground tunnel. The retractable cover plate horizontally extends when moving towards the side away from the winding assembly along with the coil conveying trolley, the winding assembly is connected with the torsional spring reset assembly, and the torsional spring reset assembly drives the winding assembly to rotate when moving towards the winding assembly along with the coil conveying trolley so as to wind the retractable cover plate. The telescopic cover plate is reasonable in structural design, the telescopic cover plate wound on the winding assembly is connected to the coil conveying trolley, the telescopic cover plate is pulled to horizontally stretch in the moving process of the coil conveying trolley, the tunnel where the coil conveying trolley passes is protected, safety is improved, personnel safety is protected, meanwhile, normal operation of the coil conveying trolley is not affected, and the coil conveying trolley is safe and reliable. The whole manufacturing is convenient, and the occupied area is small.

Description

Technical Field

[0001] The utility model relates to a tunnel self-resetting cover plate mechanism. Background Art

[0002] In steel production enterprises, the transportation of steel coils at the exit and entrance of the cold rolling production line is achieved by the cooperation of walking beams and coil transport trolleys. Since the walking beams and coil transport trolleys need to shuttle back and forth to transport steel coils, they have a large dead weight and height. Therefore, deep pits are set on the walking passages of the walking beams and coil transport trolleys, and the walking tracks are buried in the pits. However, when the coil transport trolley moves along the track at the bottom of the tunnel below the ground, due to the large size and high height of the coil transport trolley, the tunnels on the forward route of the coil transport trolley must be open, which leads to the risk of workers accidentally falling into the tunnel, and the safety factor of the on-site working conditions is not high.

[0003] In order to solve the above technical problems, tunnel covers are mostly installed in factories. However, traditional tunnel covers require foundation work on the factory floor, which is not only troublesome to operate but also costly. Utility Model Content

[0004] The utility model makes improvements on the problems existing in the above-mentioned prior art, that is, the technical problem to be solved by the utility model is to provide a tunnel self-resetting cover plate mechanism.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a tunnel self-resetting cover mechanism, including a tunnel, a roll-carrying trolley moving along a running track in the tunnel, a winding assembly is provided at one end of the tunnel, a retractable cover is wound on the winding assembly, the retractable cover is connected to the roll-carrying trolley, the retractable cover extends horizontally as the roll-carrying trolley moves toward a side away from the winding assembly, the winding assembly is connected to a torsion spring reset assembly, and the torsion spring reset assembly drives the winding assembly to rotate as the roll-carrying trolley moves toward the winding assembly to reel in the retractable cover.

[0006] Furthermore, the winding assembly is connected to the torsion spring reset assembly via a sprocket transmission member.

[0007] Furthermore, the winding assembly includes a reel arranged along the width direction of the tunnel, and both ends of the central axis of the reel are rotatably connected to the two side walls of the tunnel through bearings respectively; the retractable cover plate is composed of multiple cover plate pieces hinged together in sequence.

[0008] Furthermore, the cross section of the roll is circular, and one end surface of the cover plate facing the roll is an arc surface.

[0009] Furthermore, the torsion spring reset assembly includes a torsion spring shaft arranged parallel to the reel, and both ends of the torsion spring shaft are rotatably mounted on an L-shaped support frame, and the L-shaped support frame is fixed on the top of the tunnel.

[0010] Furthermore, the sprocket transmission component includes a first sprocket, a second sprocket and a chain, the first sprocket is installed at one end of the central axis of the reel, the second sprocket is installed at one end of the torsion spring shaft, the first sprocket and the second sprocket are located on the same side, and the chain is connected between the first sprocket and the second sprocket.

[0011] Furthermore, cover guide rails for slidingly cooperating with the retractable cover when the cover is horizontally extended are respectively fixed to the upper ends of the two side walls of the tunnel, and the cover guide rails extend along the length direction of the tunnel.

[0012] Furthermore, the cross section of the cover plate guide rail is groove-shaped.

[0013] Compared with the prior art, the utility model has the following effects: the utility model has a reasonable structural design, and the retractable cover plate wrapped around the winding assembly is connected to the coil transport trolley. The retractable cover plate is pulled horizontally to extend during the movement of the coil transport trolley, thereby protecting the tunnel through which the coil transport trolley passes, improving safety, and protecting personnel safety. At the same time, it does not affect the normal operation of the coil transport trolley. The overall production is convenient and occupies a small area. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the top view of the structure of an embodiment of the utility model;

[0015] Figure 2 yes Figure 1 Schematic diagram of the AA section structure in;

[0016] Figure 3 It is a partial structural schematic diagram of an embodiment of the utility model;

[0017] Figure 4 This is a schematic diagram of the main structure of the torsion spring reset assembly in the embodiment of the utility model;

[0018] Figure 5 It is a schematic diagram of the cross-sectional structure of the cover plate in the embodiment of the utility model. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] like Figures 1 to 5 As shown, the utility model is a tunnel self-resetting cover mechanism, comprising a tunnel 1, a roll-carrying trolley 2 moving along a running track in the tunnel 1, a winding assembly being provided at one end of the tunnel 1, a retractable cover 3 being wound on the winding assembly, the retractable cover 3 being connected to the roll-carrying trolley 2, the retractable cover 3 being horizontally extended as the roll-carrying trolley 2 moves toward a side away from the winding assembly, the horizontally extended retractable cover 3 protecting the tunnel passed by the roll-carrying trolley, thereby improving safety; the winding assembly is connected to the torsion spring reset assembly through a sprocket transmission member, the torsion spring reset assembly drives the winding assembly to rotate as the roll-carrying trolley 2 moves toward the winding assembly, so as to reel in the retractable cover 3, that is, when the roll-carrying trolley moves toward the winding assembly, the torsion spring reset assembly drives the winding assembly to rotate through the sprocket transmission member when it rotates, and the retractable cover is reeled in when the winding assembly rotates.

[0022] In this embodiment, the winding assembly includes a reel 4 arranged along the width direction of the tunnel 1, and both ends of the central axis of the reel 4 are rotatably connected to the two side walls of the tunnel 1 through bearings.

[0023] In this embodiment, the retractable cover plate 3 is composed of a plurality of cover plate sheets 5 which are hinged together in sequence. It should be noted that the structure of the retractable cover plate is similar to the structure of the rolling door in the prior art, and the retractable cover plate is rolled up by the rotation of the reel, and the retractable cover plate is pulled horizontally by the movement of the roll-carrying trolley.

[0024] In this embodiment, the cross-section of the reel 4 is circular; in order to better adapt to the reel when it is wound, the end surface of the cover plate 5 facing the reel is an arc surface.

[0025] In this embodiment, the torsion spring reset assembly includes a torsion spring shaft 6 arranged parallel to the reel 4, and the two ends of the torsion spring shaft 6 are rotatably mounted on an L-shaped support frame 7, and the L-shaped support frame 7 is fixed on the top of the tunnel 1. It should be noted that the torsion spring shaft is an existing product, which is widely used in roller blind products, including a shaft and a torsion spring sleeved on the outside of the shaft. Its detailed structure and working principle will not be repeated here. Further, the calculation method of the torsion spring length (for example, the cover plate is stretched by 5.85 meters): torsion spring length ÷ shaft diameter = number of torsion spring turns; shaft diameter 8mm, torsion spring inner diameter 95mm, torsion spring length 940mm, (length 940÷8=117 turns), 117÷20 turns = 5.85 meters (torsion spring can stretch the cover plate distance 5.85 meters), length 940÷160=5.87 meters. The above algorithm is analogous. If the shaft diameter increases, the inner diameter of the torsion spring increases, and the torsion spring stretching distance increases.

[0026] In this embodiment, the sprocket transmission member includes a first sprocket 8, a second sprocket 9 and a chain 10. The first sprocket 8 is mounted on one end of the central axis of the reel 4, the second sprocket 9 is mounted on one end of the torsion spring shaft 6, the first sprocket and the second sprocket are located on the same side, and the chain 10 is connected between the first sprocket 8 and the second sprocket 9. When the retractable cover is horizontally extended by the roll-carrying trolley, the reel drives the torsion spring shaft to rotate through the sprocket transmission member; when the roll-carrying trolley moves toward the reel, the torsion spring shaft rotates in the opposite direction under the action of its own torque, and the torsion spring shaft drives the reel to rotate in the opposite direction through the sprocket transmission member, so that the reel rewinds the retractable cover.

[0027] In this embodiment, cover rails 11 are fixed to the upper ends of the two side walls of the tunnel 1, and the cover rails 11 extend along the length direction of the tunnel 1. When the retractable cover 3 is horizontally extended, the two ends of the retractable cover 3 slide with the cover rails 11, and the cover rails play a supporting and guiding role.

[0028] In this embodiment, the cross section of the cover plate guide rail 11 is in a horizontal groove shape. Preferably, the cover plate guide rail is made of aluminum alloy.

[0029] If the present invention discloses or involves components or structures that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connection using bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by one-piece molding using a casting process) (except where it is obviously impossible to use an one-piece molding process).

[0030] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in the above utility model include states or shapes that are approximate, similar or close thereto.

[0031] Any component provided by the utility model can be assembled from multiple separate components, or can be a separate component manufactured by an integrated molding process.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A self-resetting cover plate mechanism for a tunnel, comprising a tunnel and a coil transporting trolley moving along a running track in the tunnel, characterized in that: A winding assembly is provided at one end of the tunnel, and a retractable cover is wound on the winding assembly. The retractable cover is connected to the winding transport trolley, and the retractable cover extends horizontally when the winding transport trolley moves toward the side away from the winding assembly. The winding assembly is connected to a torsion spring reset assembly, and the torsion spring reset assembly drives the winding assembly to rotate when the winding transport trolley moves toward the winding assembly to retract the retractable cover.

2. The tunnel self-resetting cover plate mechanism according to claim 1, characterized in that: The winding assembly is connected to the torsion spring reset assembly through a sprocket transmission member.

3. The tunnel self-resetting cover plate mechanism according to claim 2, characterized in that: The winding assembly includes a reel arranged along the width direction of the tunnel, and the two ends of the central axis of the reel are rotatably connected to the two side walls of the tunnel through bearings respectively; the retractable cover plate is composed of a plurality of cover plate pieces hinged together in sequence.

4. The tunnel self-resetting cover plate mechanism according to claim 3 is characterized in that: The cross section of the reel is circular, and one end surface of the cover sheet facing the reel is an arc surface.

5. The tunnel self-resetting cover plate mechanism according to claim 3 is characterized in that: The torsion spring reset assembly includes a torsion spring shaft arranged parallel to the reel, and both ends of the torsion spring shaft are rotatably mounted on an L-shaped support frame, and the L-shaped support frame is fixed on the top of the tunnel.

6. The tunnel self-resetting cover plate mechanism according to claim 5, characterized in that: The sprocket transmission component includes a first sprocket, a second sprocket and a chain. The first sprocket is installed at one end of the central axis of the reel, the second sprocket is installed at one end of the torsion spring shaft, the first sprocket and the second sprocket are located on the same side, and the chain is connected between the first sprocket and the second sprocket.

7. The tunnel self-resetting cover plate mechanism according to claim 1, characterized in that: The upper ends of the two side walls of the tunnel are respectively fixed with cover guide rails for slidingly cooperating with the retractable cover when it is horizontally extended, and the cover guide rails extend along the length direction of the tunnel.

8. The tunnel self-resetting cover plate mechanism according to claim 7, characterized in that: The cross section of the cover plate guide rail is groove-shaped.

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