Double-layer steel bar positioning device for tunnel construction

Abstract

The utility model relates to the technical field of tunnel construction equipment, and discloses a double-layer steel bar positioning device for tunnel construction, which comprises a door-shaped frame, a plurality of arched tracks and two power components, pulley assemblies are mounted on the arched tracks, and the power components are used for driving the corresponding pulley assemblies to reciprocate along the arched tracks. The adjacent pulley assemblies are connected through a cross beam, a plurality of pairs of positioning plates are fixed to the cross beam in the extending direction of the cross beam, and two limiting rods are installed between the same pair of positioning plates. The utility model has the beneficial effects that the inner and outer reinforcing steel bars pulled to the top of the door-shaped frame are inserted into the gap between the positioning plates, then the insertion ends of the reinforcing steel bars are fixed with the anchor rods embedded into the ground, and finally the pulley assembly is started, so that when the pulley assembly moves to the other side along the arched track, the reinforcing steel bars are bent to be arc-shaped; finally, after the other end of the steel bar bent into the arc shape is fixed, positioning of the double-layer steel bar is completed, and the labor intensity of workers in the construction process is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to tunnel construction equipment technical field, especially a double -deck reinforcement positioning device for tunnel construction. BACKGROUND

[0002] In tunnel construction engineering, waterproof and hoop reinforcement need to be laid along the inner wall of the tunnel before concrete pouring, and a construction trolley is usually needed.

[0003] Chinese utility model patent (authorization announcement number: CN209469438U name: tunnel excavation trolley) including bottom layer trolley and set on bottom layer trolley upper layer trolley, the upper layer trolley has at least one layer, and the upper layer trolley can walk longitudinally relative to the bottom layer trolley, and when the upper layer trolley is multilayer, each layer of the upper layer trolley has independent walking power and can walk longitudinally relative to adjacent lower layer. Preferably, the bottom layer trolley is loaded on the wheeled frame, the upper layer trolley is composed of middle layer trolley and top layer trolley, the middle layer trolley can walk longitudinally relative to the bottom layer trolley, and the top layer trolley can walk longitudinally relative to the middle layer trolley, one end of the bottom layer trolley is provided with a trestle, a steel rail bridge or a drawbridge for the middle layer trolley to walk, and one end of the middle layer trolley is provided with a trestle or a steel rail bridge for the top layer trolley to walk. The utility model has the beneficial effects that it is in the form of multilayer combination, can adapt to full-face, double-step or three-step tunnel excavation by changing the combination state, has a wide range of adaptation, can be reused and effectively reduces the tunnel excavation cost. However, when laying the arc-shaped reinforcement, the construction personnel need to stand on the trolley to send the about 9-30m long reinforcement welded on the ground from the side of the trolley to the arch part, and use the elasticity of the reinforcement (generally with a diameter of 22-25mm) to press the reinforcement against the top of the tunnel through the lining rod to complete the positioning of the reinforcement, and finally fix the two ends with the anchor rod embedded in the ground to complete the laying of the arc-shaped reinforcement. The labor intensity of workers is large during construction, the construction quality cannot be guaranteed, the reinforcement is easy to pierce the waterproof board, and the construction quality is low. SUMMARY

[0004] The utility model aims at providing a double -deck reinforcement positioning device for tunnel construction to overcome the shortcomings of prior art.

[0005] The utility model discloses a double -deck reinforcement positioning device for tunnel construction, including door type frame, a plurality of arc track and two power components, the door type frame is fixed in the arc track, a plurality of arc track distributes along the direction perpendicular to its plane, two power components all are installed on the top of door type frame, and two power components are located respectively at the beginning and the end of the distribution direction of arc track, the arc track is installed with the tackle assembly, and the power component is used for driving corresponding tackle assembly reciprocating motion along the arc track, and the adjacent tackle assembly is connected through the crossbeam, a plurality of pairs of positioning board are fixed on the crossbeam along its extension direction, the positioning board extends along the radial direction of arc track, and two limit rods are installed between the adjacent positioning board, and the limit rod between the adjacent positioning board distributes along the radial direction of arc track.

[0006] Preferably, the limit rod is rotatably installed on the positioning plate.

[0007] Preferably, an arc slot is formed on the limit rod along the circumferential direction thereof.

[0008] Preferably, the power component comprises a reduction motor and a main sprocket, the reduction motor is fixed on the top of door type frame, two reduction motors are linked through transmission shaft, the main sprocket is rotatably installed on the door type frame and is driven by the reduction motor, a plurality of secondary sprockets are installed on the door type frame and the arc track, the secondary sprocket on the arc track is in arc distribution, the main sprocket and the secondary sprocket are linked through transmission chain, and the transmission chain is connected with the tackle assembly through chain.

[0009] Preferably, the tackle assembly comprises a pair of rollers and a door type support, the roller is rotatably installed on the inner side of door type support, the same pair of rollers is located on the two inner side walls of door type support respectively, the arc track is clamped between the same pair of rollers, and the chain is hinged on the door type support.

[0010] Preferably, the bottom of the door type frame is provided with universal wheels.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] The inner and outer layer steel bars pulled to the top of the door type frame are inserted into the gap between the positioning plates, and the inserted inner and outer layer steel bars are respectively abutted against two limiting rods in the gap, then the inserted end of the steel bar is fixed with the anchor rod embedded in the ground, finally the trolley assembly is started, when the trolley assembly moves along the arc-shaped track to the other side, the steel bar is bent into an arc, after the other end of the steel bar bent into an arc is fixed, the positioning of the double-layer steel bar is completed, the labor intensity is low during the construction process, meanwhile, the steel bar is prevented from being damaged to the waterproof plate during manual carrying, and the construction quality is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of the utility model;

[0014] Figure 2 It is Figure 1 It is a partial enlarged schematic view of A in the middle;

[0015] Figure 3 It is Figure 1 It is a partial enlarged schematic view of B in the middle;

[0016] Figure 4 It is a schematic view of the installation structure of the transmission chain;

[0017] In the figure, 1-door type frame, 2-arc-shaped track, 3-cross beam, 4-positioning plate, 5-limiting rod, 6-arc-shaped groove, 7-reduction motor, 8-main sprocket, 9-transmission shaft, 10-vice sprocket, 11-transmission chain, 12-chain, 13-roller, 14-door type support, 15-universal wheel. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.

[0020] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0021] It should be noted that like reference numerals and letters refer to like items throughout the several views, and once an item is defined in one view, it should not require further defining and explaining in subsequent views.

[0022] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship commonly placed when the utility model product is used, or is the orientation or position relationship commonly understood by those skilled in the art, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0023] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0024] As Figure 1 and 3As shown in the figure, a double-layer steel positioning device for tunnel construction, comprising a door frame 1, a plurality of arch tracks 2 and two power components, the door frame 1 is fixed in the arch track 2, the plurality of arch tracks 2 are distributed along the direction perpendicular to the plane where they are located, the two power components are installed on the top of the door frame 1, and the two power components are located at the beginning and end of the distribution direction of the arch track 2, respectively, the arch track 2 is provided with a trolley assembly, the power component is used to drive the corresponding trolley assembly to reciprocate along the arch track 2, the adjacent trolley assemblies are connected through a cross beam 3, the cross beam 3 is provided with a plurality of pairs of positioning plates 4 along the extension direction thereof, the positioning plates 4 extend along the radial direction of the arch track 2, two limiting rods 5 are installed between the adjacent positioning plates 4, and the limiting rods 5 between the adjacent positioning plates 4 are distributed along the radial direction of the arch track 2. The inner and outer layer steels pulled to the top of the door frame 1 are inserted into the gap between the positioning plates 4, and the inner and outer layer steels are abutted against the two limiting rods 5 in the gap, respectively, then the insertion end of the steel is fixed with the anchor rod embedded in the ground, finally the trolley assembly is started, when the trolley assembly moves to the other side along the arch track 2, the steel is bent into an arc shape, after the other end of the steel bent into an arc shape is fixed, the positioning of the double-layer steel is completed, the labor intensity of workers is low during construction, the steel does not pierce the waterproof board, and the construction quality is ensured.

[0025] In this embodiment, as shown in the figure, Figure 3 The limiting rod 5 is rotatably installed on the positioning plate 4, because the steel rubs against the limiting rod 5 during work, the rotating limiting rod 5 is uniformly worn in the circumferential direction, avoiding that the contact area with the steel increases after long-term wear in one place, thereby accelerating the wear and reducing the service life of the limiting rod 5.

[0026] In this embodiment, as shown in the figure, 3, an arc-shaped groove 6 is formed on the limiting rod 5 in the circumferential direction, the steel is clamped in the arc-shaped groove 6, avoiding horizontal movement during bending, which leads to inaccurate positioning and affects the quality of tunnel construction in the later stage.

[0027] In this embodiment, as shown in the figure, Figure 1 and 4 The power component comprises a speed reducer 7 and a main sprocket 8, the speed reducer 7 is fixed on the top of the door frame 1, the two speed reducers 7 are linked through a transmission shaft 9, the main sprocket 8 is rotatably installed on the door frame 1 and is driven by the speed reducer 7, the door frame 1 and the arch track 2 are both provided with a plurality of secondary sprockets 10, the secondary sprockets 10 located on the arch track 2 are distributed in an arch shape, the main sprocket 8 and the secondary sprocket 10 are linked through a transmission chain 11, the transmission chain 11 is connected with the trolley assembly through a chain 12, and the two synchronous speed reducers 7 enhance the power when the cross beam 3 moves, avoiding the steel laying process from being stuck due to insufficient power.

[0028] In this embodiment, as shown in the figure, Figure 2As shown, the trolley assembly comprises a pair of rollers 13 and a door-shaped support 14, the rollers 13 are rotatably installed on the inner sides of the door-shaped support 14, the same pair of rollers 13 are respectively located on the two inner side walls of the door-shaped support 14, the arch-shaped track 2 is clamped between the same pair of rollers 13, and the chain 12 is hinged on the door-shaped support 14, so that the structure is simple and the operation is stable.

[0029] In the embodiment, as shown, Figure 1 The bottom of the door-shaped frame 1 is provided with universal wheels 15, which facilitates the movement of the device.

[0030] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A double-layer steel positioning device for tunnel construction, comprising a portal frame (1), a plurality of arched tracks (2) and two power assemblies, the portal frame (1) is fixed in the arched tracks (2), the plurality of arched tracks (2) are distributed along the direction perpendicular to the plane where they are located, and the two power assemblies are both installed on the top of the portal frame (1), characterized in that: Two power assemblies are respectively located at the beginning and the end of the distribution direction of the arc-shaped track (2), a trolley assembly is installed on the arc-shaped track (2), the power assembly is used for driving the corresponding trolley assembly to reciprocate along the arc-shaped track (2), adjacent trolley assemblies are connected through a cross beam (3), a plurality of pairs of positioning plates (4) are fixed on the cross beam (3) along the extension direction of the cross beam (3), the positioning plates (4) extend along the radial direction of the arc-shaped track (2), two limiting rods (5) are installed between adjacent positioning plates (4), and the limiting rods (5) between adjacent positioning plates (4) are distributed along the radial direction of the arc-shaped track (2).

2. The double-layer reinforcing steel positioning device for tunnel construction according to claim 1, characterized in that: The limiting rod (5) is rotatably installed on the positioning plate (4).

3. The double-layer reinforcing steel positioning device for tunnel construction according to claim 1 or 2, characterized in that: An arc-shaped groove (6) is formed in the limiting rod (5) along the circumferential direction of the limiting rod (5).

4. The double layer reinforcement positioning device for tunnel construction of claim 1, wherein: The power assembly comprises a reduction motor (7) and a main sprocket (8), the reduction motor (7) is fixed on the top of the door-shaped frame (1), two reduction motors (7) are connected through a transmission shaft (9), the main sprocket (8) is rotatably installed on the door-shaped frame (1) and is driven by the reduction motor (7), the door-shaped frame (1) and the arc-shaped track (2) are both provided with a plurality of secondary sprockets (10), the secondary sprockets (10) on the arc-shaped track (2) are distributed in an arc shape, the main sprocket (8) and the secondary sprocket (10) are connected through a transmission chain (11), and the transmission chain (11) and the trolley assembly are connected through a chain (12).

5. The double layer reinforcement positioning device for tunnel construction of claim 4, wherein: The trolley assembly comprises a pair of rollers (13) and a door-shaped support (14), the roller (13) is rotatably installed on the inner side of the door-shaped support (14), the same pair of rollers (13) are respectively located on the two inner side walls of the door-shaped support (14), the arc-shaped track (2) is clamped between the same pair of rollers (13), and the chain (12) is hinged to the door-shaped support (14).

6. The double layer reinforcement positioning device for tunnel construction of claim 1, wherein: A universal wheel (15) is arranged at the bottom of the door-shaped frame (1).

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