Positioning device in tunnel

Abstract

The utility model discloses a positioning device in a tunnel, which comprises a positioning device arranged on a track, the positioning device comprises a base, rocker arms, a laser measuring instrument and a crank, the base is arranged between steel rails of the track and is perpendicular to the steel rails, and the rocker arms are respectively arranged on two sides of the middle of the base. One end of each rocker arm is rotationally connected with the base, the other end of each rocker arm is connected with the laser measuring instrument, a first connecting rod is arranged between the rocker arms, a pair of limiting plates is arranged on the base, the first connecting rod is located between the limiting plates, and the limiting plates and the first connecting rod are connected through a crank which is in threaded connection with the first connecting rod and is in sliding connection with the limiting plates; the positioning device is installed between two steel rails of a track and can adapt to the inclination angle of a track bed, the laser measuring instrument is adjusted to be in a horizontal state by rotating the rocker arm, the problem that traditional measuring equipment is inconvenient to use on an inclined datum plane is effectively solved, light spots projected to a shield sheet by the laser measuring instrument are clear and visible, and the measurement accuracy is high. And the installation position of the ring network cable support can be directly indicated.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, and particularly relates to a positioning device in a tunnel. Background Art

[0002] In the tunnel engineering construction of rail transit systems such as subways and light rails, for tunnels constructed by the shield method, the tunnel wall surface is composed of shield segments. When laying a cable system in the tunnel, in order to support the cable system and meet the requirements of safety, aesthetics and functionality, it is necessary to install ring network cable brackets on these shield segments. During the installation process, it is necessary to measure and position the installation positions of the ring network cable brackets to ensure the stability of the brackets and the smooth progress of subsequent cable laying.

[0003] Since the track bed in the tunnel is a plane, when designing the installation position of the ring network cable bracket, the ring network cable bracket is usually parallel to the track bed, and the middle position between the two rails of the track is used as a reference point to determine the installation position of the ring network cable bracket. This method is simple and effective, and can ensure that the relative position relationship between the ring network cable bracket and the track can meet the design requirements in different construction scenarios.

[0004] However, in the track turning section, the track bed is designed to have a specific inclination angle to ensure that the train can complete the turning process smoothly and safely. Therefore, in the actual construction process, it is necessary to consider the influence of factors such as the flatness and slope of the track bed on the installation height. Existing measuring devices are usually designed for a horizontal reference plane, and when facing an inclined reference plane, there is a problem of inconvenient use and it is difficult to directly indicate the installation position of the ring network cable bracket. Summary of the Invention

[0005] The purpose of the utility model is to provide a positioning device in a tunnel for the problems existing in the prior art.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A positioning device in a tunnel includes a positioning device arranged on a track. The positioning device includes a base, a rocker arm, a laser measuring instrument and a crank. The base is located between the rails of the track, the base is perpendicular to the rails, the two sides of the middle of the base are respectively provided with the rocker arms, one end of the rocker arm is rotatably connected to the base and the other end is connected to the laser measuring instrument, a first connecting rod is arranged between the rocker arms, a pair of limiting plates are arranged on the base, the first connecting rod is located between the limiting plates, the limiting plates and the first connecting rod are connected by the crank, the crank is threadedly connected to the first connecting rod, and the crank is slidably connected to the limiting plates.

[0008] The positioning device in the utility model is directly installed between the two rails of the track, ensuring the stability and accuracy of the installation reference. In the track turning section, it can flexibly cope with the inclination angle of the track bed, and adjust the laser measuring instrument to a horizontal state by rotating the rocker arm, effectively overcoming the problem that traditional measuring equipment is inconvenient to use on an inclined reference surface. The light spot projected by the laser measuring instrument to the shield piece is clearly visible, providing an intuitive visual reference for construction personnel, directly indicating the installation position of the ring network cable bracket, and realizing accurate positioning of the installation position of the ring network cable bracket.

[0009] Preferably, the base comprises a bottom plate, a vertical rod and a cross rod, the bottom plate is arranged perpendicular to the rail, the cross rod is located between the bottom plate and the first connecting rod, the cross rod is arranged parallel to the bottom plate, and the cross rod and the bottom plate are connected by the vertical rod.

[0010] The structure of the base ensures that it can be stably installed between the steel rails of the track, so that the rocker arm can be firmly installed on the base. The combination of the cross bar and the vertical bar provides a stable installation platform for the rocker arm, providing a reliable foundation for subsequent measurement work.

[0011] Preferably, the limiting plates are respectively arranged at both ends of the cross bar, the limiting plates are arranged perpendicular to the cross bar, and the limiting plates are provided with sliding grooves, which are arranged along the length direction of the limiting plates.

[0012] The limit plates are respectively arranged at the two ends of the cross bar, and the movement range of the rocker arm in the horizontal direction and the vertical direction can be effectively limited through the sliding groove, so that the crank can push the rocker arm to rotate.

[0013] Preferably, the crank passes through the slide groove and is slidably connected to the limit plate, and a pair of baffles are sleeved on the crank, and any of the limit plates is located between the baffles.

[0014] The crank passes through the slide groove and is slidably connected to the limit plate. When the rocker arm rotates, in order to prevent the rocker arm from driving the crank to move in a large range in the horizontal direction, the baffle is provided to prevent the crank from leaving the slide groove.

[0015] Preferably, the crank comprises a limiting section, a threaded section and a handle, the threaded section is located between the limiting section and the handle, a sleeve is provided on the first connecting rod, the threaded section is connected to the sleeve by threads, and the baffle is located on the limiting section.

[0016] Since the movement range of the crank in the horizontal direction is limited, when the crank is rotated, the sleeve will move along the threaded section, thereby driving the rocker arm to rotate.

[0017] Preferably, a limiting rod is provided on the bottom plate. The bottom plate contacts the roadbed of the rail through the limiting rod. Two ends of the bottom plate are respectively placed on the top surfaces of the rail bases of the rails, and the limiting rod contacts the side surfaces of the rail bases of the rails.

[0018] The limiting rod and the bottom plate cooperate with each other, so that the bottom plate can be accurately stuck between the rails. At the same time, with the help of the limiting rod, it can be quickly determined whether the bottom plate is arranged perpendicular to the rails.

[0019] Preferably, both the vertical rod and the rocker arm are telescopic rods. The telescopic rod includes a first segment and a second segment. A plurality of positioning holes are respectively provided on the first segment and the second segment. The first segment and the second segment are connected by bolts, and the bolts are threadedly connected with the positioning holes.

[0020] A plurality of the positioning holes are provided on the telescopic rod. The combination of the positioning holes and the bolts makes the adjustment process of the telescopic rod convenient and fast, and the adjusted position is stable and reliable. This design enables the lengths of the vertical rod and the rocker arm to be adjusted according to actual needs to meet the positioning requirements of the ring network cable brackets at different installation heights.

[0021] Preferably, the laser measuring instrument includes a main body, a laser emitter and a level. The main body is located between the rocker arms. The laser emitters are located at two ends of the main body, and the level is located in the middle of the main body.

[0022] The laser emitter can project a clear light spot onto the shield segment, providing an intuitive visual reference for construction workers and directly indicating the installation position of the ring network cable bracket. The level is used to measure whether the main body is in a horizontal state, and the position of the rocker arm is adjusted according to the measurement result of the level.

[0023] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0024] The positioning device of the present utility model is directly installed between two rails of the track, ensuring the stability and accuracy of the installation reference. In the curved section of the track, it can flexibly cope with the inclination angle of the track roadbed. By rotating the rocker arm to adjust the laser measuring instrument to a horizontal state, the problem of inconvenient use of traditional measuring equipment on an inclined reference plane is effectively overcome. The light spot projected by the laser measuring instrument onto the shield segment is clearly visible, providing an intuitive visual reference for construction workers and directly indicating the installation position of the ring network cable bracket, realizing the precise positioning of the installation position of the ring network cable bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the positioning device in the tunnel when used in the first embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of the positioning device in the first embodiment of the present utility model arranged on the track;

[0027] Figure 3 This is a structural schematic diagram of the positioning device in the first embodiment of the present utility model;

[0028] In the figure: 1, track bed; 102, rail; 2, installation point; 3, positioning device; 4, bottom plate; 401, vertical rod; 402, cross rod; 403, limiting rod; 5, rocker arm; 6, laser measuring instrument; 7, crank; 8, limiting plate; 801, sliding groove; 9, first connecting rod. Specific embodiments

[0029] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work conditions belong to the scope of protection of the present utility model.

[0030] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0031] As Figures 1 to 3 shown, the specific solution of the embodiment is as follows: Embodiment 1: A positioning device in a tunnel, which is applied to the tunnel engineering construction of a rail transit system, can adapt to the track bed 1 with different inclination angles, and effectively overcomes the problem that traditional measuring equipment is inconvenient to use on an inclined reference plane.

[0032] The positioning device 3 includes a base, a rocker arm 5, a laser measuring instrument 6 and a crank 7. The base is located between the rails 102 of the track. The base includes a bottom plate 4, a vertical rod 401 and a cross rod 402. The bottom plate 4 is arranged perpendicular to the rail 102. The vertical rod 401 is arranged perpendicular to the top surface of the bottom plate 4. The cross rod 402 is arranged parallel to the bottom plate 4. The cross rod 402 and the bottom plate 4 are connected by the vertical rod 401.

[0033] The bottom surface of the bottom plate 4 is provided with a limiting rod 403. The bottom plate 4 contacts the roadbed of the rail 102 through the limiting rod 403. The two ends of the bottom plate 4 are respectively placed on the top surfaces of the rail bottoms of the rails 102. The limiting rod 403 contacts the side surfaces of the rail bottoms of the rails 102. The limiting rod 403 and the bottom plate 4 cooperate with each other, so that the bottom plate 4 can be accurately stuck between the rails 102. At the same time, with the help of the limiting rod 403, it can be quickly determined whether the bottom plate 4 is set perpendicular to the rail 102.

[0034] The limiting plates 8 are respectively arranged at both ends of the cross bar 402, and the limiting plates 8 and the vertical bar 401 are respectively located on the top surface and the bottom surface of the cross bar 402. The limiting plates 8 are arranged perpendicular to the cross bar 402. The limiting plates 8 are provided with sliding grooves 801, and the sliding grooves 801 are arranged along the length direction of the limiting plates 8.

[0035] Rocking arms 5 are respectively arranged on both sides of the middle part of the base. Since in the same tunnel, the distance between the ring network cable bracket and the track roadbed 1 usually remains unchanged, the distance of the ring network cable bracket relative to the horizontal reference plane of the tunnel in the vertical direction is set as the length of the rocking arm 5.

[0036] A first connecting rod 9 and a laser measuring instrument 6 are arranged between the rocking arms 5. The bottom ends of the rocking arms 5 are rotatably connected to the middle part of the bottom plate 4, the top ends of the rocking arms 5 are connected to the laser measuring instrument 6, a sleeve is arranged on the first connecting rod 9, the first connecting rod 9 is located between the limiting plates 8, and the first connecting rod 9 is located above the cross bar 402.

[0037] The rocking handle 7 sequentially passes through the limiting plate 8 at the left end of the cross bar 402, the first connecting rod 9 and the limiting plate 8 at the right end of the cross bar 402 from left to right. The rocking handle 7 passes through the limiting plate 8 from the sliding groove 801 and is slidably connected to the limiting plate 8. The rocking handle 7 passes through the first connecting rod 9 from the sleeve, and the limiting plate 8 and the first connecting rod 9 are connected by the rocking handle 7.

[0038] The rocking handle 7 includes a limiting section, a threaded section and a handle. The threaded section is located between the limiting section and the handle. A pair of baffles are sleeved on the limiting section. The distance between the baffles is greater than the thickness of the limiting plate 8. The rocking handle 7 is threadedly connected to the sleeve through the threaded section, and the limiting plate 8 at the right end of the cross bar 402 is located between the baffles.

[0039] The working principle of the rocking handle 7 is as follows:

[0040] When it is necessary to rotate the rocking arm 5, the rocking handle 7 is rotated. Since the limiting plate 8 restricts the movement of the rocking handle 7 in the horizontal direction through the baffles, during the rotation of the rocking handle 7, the first connecting rod 9 will move along the threaded section, and then the rocking arm 5 will rotate around the middle part of the bottom plate 4. During this process, the rocking handle 7 rotates relative to the limiting plate 8, and the sliding groove 801 does not restrict the rotation of the rocking handle 7.

[0041] During the rotation of the swing arm 5, the distance between the first connecting rod 9 and the cross bar 402 will change, and the first connecting rod 9 will drive the swing arm 5 to move together. Since the movement of the swing arm 5 in the horizontal direction is blocked by the limiting plate 8, the swing arm 5 will also rotate. If the swing arm 5 rotates clockwise, the left side of the swing arm 5 slides upward along the chute 801, and the right side of the swing arm 5 slides downward along the chute 801.

[0042] The laser measuring instrument 6 includes a main body, a laser emitter and a level. The main body is located between the swing arms 5, the laser emitters are located at both ends of the main body, and the level is located in the middle of the main body.

[0043] The working principle of this embodiment is as follows: When designing the installation position of the ring network cable support, the middle position between the two steel rails 102 of the track is used as the reference point to determine the installation point 2 of the ring network cable support on the shield segment, and the distances of the installation point 2 relative to the reference point in the horizontal direction and the vertical direction are marked on the design drawing for reference during construction.

[0044] When installing the ring network cable support, the bottom plate 4 of the positioning device 3 is clamped between the steel rails 102 to make the bottom plate 4 perpendicular to the steel rails 102. At this time, the middle part of the bottom plate 4 is located at the middle position between the steel rails 102, so the middle part of the bottom plate 4 is used as the reference point in the design drawing.

[0045] Subsequently, the inclination angle of the swing arm 5 is determined according to the level, and then the crank 7 is rotated to drive the swing arm 5 to rotate until the angle measured by the level returns to zero. At this time, the swing arm 5 is perpendicular to the tunnel horizontal reference plane, and the laser measuring instrument 6 is located directly above the middle part of the bottom plate 4.

[0046] Since the length of the swing arm 5 is equal to the distance of the ring network cable support relative to the tunnel horizontal reference plane in the vertical direction, the laser measuring instrument 6 and the installation point 2 of the ring network cable support are at the same height at this time. When the laser emitter is turned on, the light spot projected by the laser emitter onto the shield segment is the installation point 2 of the ring network cable support, providing an intuitive visual reference for the construction personnel and directly indicating the installation position of the ring network cable support.

[0047] Embodiment 2: The difference between this Embodiment 2 and Embodiment 1 is that both the vertical rod 401 and the swing arm 5 are telescopic rods. The telescopic rod includes a first segment and a second segment. A number of positioning holes are respectively provided on the first segment and the second segment. The first segment and the second segment are connected by bolts, and the bolts are threadedly connected with the positioning holes.

[0048] The lengths of the vertical rod 401 and the swing arm 5 can be adjusted synchronously according to the construction requirements to ensure that the limiting plate 8 and the first connecting rod 9 can be lifted and lowered synchronously, so that the swing arm 5 can meet the construction requirements of different tunnels.

[0049] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning device in a tunnel, comprising a positioning device arranged on a track, characterized in that, The positioning device includes a base, a rocker arm, a laser measuring instrument, and a crank. The base is located between the rails of the track, the base is perpendicular to the rails, the rocker arms are respectively provided on both sides of the middle of the base, one end of the rocker arm is rotatably connected to the base, and the other end is connected to the laser measuring instrument. A first connecting rod is provided between the rocker arms, a pair of limiting plates are provided on the base, the first connecting rod is located between the limiting plates, and the limiting plates and the first connecting rod are connected by the crank. The crank is threadedly connected to the first connecting rod and slidably connected to the limiting plates.

2. The tunnel positioning device according to claim 1, wherein The base includes a bottom plate, a vertical rod, and a cross rod. The bottom plate is perpendicular to the rails, the cross rod is located between the bottom plate and the first connecting rod, the cross rod is parallel to the bottom plate, and the cross rod and the bottom plate are connected by the vertical rod.

3. The tunnel positioning device according to claim 2, characterized in that, The limiting plates are respectively provided at both ends of the cross rod, the limiting plates are perpendicular to the cross rod, and sliding grooves are provided on the limiting plates, and the sliding grooves are arranged along the length direction of the limiting plates.

4. The tunnel positioning device according to claim 3, wherein, The crank passes through the sliding groove and is slidably connected to the limiting plate. A pair of baffles are sleeved on the crank, and any one of the limiting plates is located between the baffles.

5. The tunnel positioning device according to claim 4, characterized in that, The crank includes a limiting section, a threaded section, and a handle. The threaded section is located between the limiting section and the handle. A sleeve is provided on the first connecting rod, and the threaded section is threadedly connected to the sleeve. The baffle is located on the limiting section.

6. The tunnel positioning device according to claim 2, characterized in that, A limiting rod is provided on the bottom plate. The bottom plate contacts the roadbed of the rails through the limiting rod. Both ends of the bottom plate are respectively placed on the top surfaces of the rail soles of the rails, and the limiting rod contacts the side surfaces of the rail soles.

7. The tunnel positioning device according to claim 2, wherein Both the vertical rod and the rocker arm are telescopic rods. The telescopic rod includes a first segment and a second segment. A plurality of positioning holes are respectively provided on the first segment and the second segment. The first segment and the second segment are connected by bolts, and the bolts are threadedly connected to the positioning holes.

8. A tunnel positioning device according to claim 1, characterized in that, The laser measuring instrument includes a main body, a laser emitter, and a level. The main body is located between the rocker arms, the laser emitters are located at both ends of the main body, and the level is located in the middle of the main body.

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