Tunnel secondary lining steel bar conveying device

Abstract

The utility model discloses a tunnel secondary lining steel bar conveying device which comprises a base, a conveying assembly and a positioning assembly, the conveying assembly is arranged on the base and used for conveying steel bars to a construction position in a roller conveying mode, and the positioning assembly is used for positioning the base and the conveying assembly near the construction position. According to the utility model, the plurality of conveying devices are arranged side by side at certain intervals, the reinforcing steel bars are lapped on the rollers of the conveying devices, the reinforcing steel bars are pushed from one ends of the reinforcing steel bars to roll on the rollers, and rolling friction force is generated between the rollers and the reinforcing steel bars, so that when the reinforcing steel bars are pushed and conveyed manually, the labor intensity of workers can be reduced due to the smaller rolling friction force; and meanwhile, a jack can be used for mechanically connecting the reinforcing steel bars in a reserved space between the two conveying devices, the mechanical connecting quality of the reinforcing steel bars is guaranteed, operation is flexible, the application range is large, and manpower is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a tunnel secondary lining steel bar conveying device. Background Art

[0002] In the large-scale construction of high-speed railway and highway networks, huge tunnel projects need to be built. The secondary lining of the tunnel is an important part of the tunnel structure. It is to build a layer of reinforced concrete lining outside the existing initial support structure to enhance safety reserves. During the construction of the secondary lining of the tunnel, the secondary lining steel bars need to be transported to the inside of the tunnel, connected by binding, and then poured with concrete.

[0003] In the prior art, the steel bars outside the tunnel are generally transported to a relatively empty place in the tunnel by vehicles for storage, and then transported from the storage point to the tunnel secondary lining steel bar installation site by manual dragging, which is time-consuming and laborious, and seriously affects the construction progress of the tunnel secondary lining steel bar binding. The traditional mechanical connection of steel bars is to place the steel bars on the ground and rely on workers to operate, which has limited working space and is very inconvenient. During the process of mechanical connection of steel bars, due to the friction of the steel bars and the decline of human energy over time, unqualified mechanical connection of steel bars often occurs.

[0004] Therefore, it is necessary to improve the existing tunnel secondary lining steel bar transmission and steel bar mechanical connection, so as to ensure the steel bar transmission efficiency, ensure the quality of steel bar mechanical connection, facilitate the operation of on-site construction personnel, and save manpower. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a tunnel secondary lining steel bar conveying device, which can ensure the transmission efficiency of the steel bars, ensure the quality of the mechanical connection of the steel bars, facilitate the operation of on-site construction personnel, and save manpower.

[0006] The utility model provides a tunnel secondary lining steel bar conveying device, comprising a base, a conveying assembly and a positioning assembly. The conveying assembly is arranged on the base and is used to convey the steel bars to a construction position by roller conveying, and the positioning assembly is used to position the base and the conveying assembly near the construction position.

[0007] Furthermore, the conveying assembly includes a bracket and a roller arranged on the bracket, the bracket is fixed on the base, and the roller is used to support the steel bars and convey them by rolling.

[0008] Furthermore, the roller comprises a roller shaft and a roller cylinder externally mounted on the roller shaft, and the length of the roller cylinder is not greater than the length of the roller shaft.

[0009] Furthermore, the bracket includes two supporting feet for lifting the roller, and the two supporting feet are respectively fixed at two ends along the length direction of the base.

[0010] Furthermore, both ends of the roller are connected to the supporting feet respectively, so as to set the bracket and the roller as a whole on the base along the length direction of the base.

[0011] Furthermore, the positioning assembly includes base legs and a positioning tube, and the base legs and the positioning legs are arranged at the lower part of the base to support the base.

[0012] Furthermore, two ends of the lower portion of the base along the width direction are respectively connected to the base legs and the positioning tube, the base legs are perpendicular to the base, and the positioning tube is cylindrical and connected to the base on the side of the cylinder.

[0013] Furthermore, the length of the base legs is greater than the cross-sectional diameter of the positioning tube.

[0014] Furthermore, a positioning leg is provided on one side of the base foot close to the base for cooperating with the base foot to position the base, and the positioning leg is perpendicular to the base and connected to the lower part of the base.

[0015] Furthermore, the length of the positioning legs is greater than the length of the base legs.

[0016] The beneficial effects of the utility model are as follows: the tunnel secondary lining steel bar conveying device of the utility model arranges a plurality of conveying devices in parallel at a certain interval, the steel bars are placed on the rollers of each conveying device, and the steel bars are pushed from one end to roll on the rollers. A rolling friction force is generated between the rollers and the steel bars. When the steel bars are conveyed by manual push, the smaller rolling friction force can reduce the labor intensity of the workers. At the same time, a jack can be used to mechanically connect the steel bars in the reserved space between the two conveying devices, thereby ensuring the mechanical connection quality of the steel bars, being flexible in operation, having a wide range of application, and saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a side view of the utility model.

[0020] Numbers in the figure: 1, base; 2, roller; 3, bracket; 4, support foot; 5, roller shaft; 6, base support foot; 7, positioning tube; 8, positioning leg. DETAILED DESCRIPTION

[0021] Figure 1 It is a structural schematic diagram of the utility model. Figure 2It is a side view of the utility model, as shown in the figure: the utility model provides a tunnel secondary lining steel bar transmission device, including a base 1, a transmission component and a positioning component. The transmission component is arranged on the base 1 and is used to transmit the steel bars to the construction position by roller transmission. The positioning component is used to position the base and the transmission component near the construction position. The base refers to the bottom structure used to support or install equipment or objects. The material of the base can be selected according to the use situation. In this scheme, the I-beam at the construction site can be used as the base. The structure is strong and the material is easy to obtain. Other materials can also be used as the base, which will not be repeated here; the transmission component is generally composed of rollers, drums, conveyor belts, etc., and the positioning component is generally composed of support feet, legs, etc.; when the secondary lining steel bars are tied inside the tunnel, the two sides of the tunnel ground corresponding to the steel bar tying place are the construction positions. After the steel bars transmitted into the tunnel are connected at the construction position, the tying of the tunnel secondary lining steel bars is completed by a trolley.

[0022] In this embodiment, the conveying assembly includes a bracket 3 and a roller arranged on the bracket, the bracket 3 is fixed on the base 1, and the roller is used to support the steel bar and convey it by rolling; the roller includes a roller shaft 5 and a roller 2 mounted on the roller shaft 5, and the length of the roller 2 is not greater than the length of the roller shaft 5; a plurality of bearings can be arranged on the roller shaft, which can provide a smaller friction coefficient, thereby improving the rolling efficiency of the roller. During the construction of the tunnel, since the on-site environment is relatively humid and dusty, the environment is very harsh, and the roller shaft and bearings will be affected by the on-site environment, resulting in a reduction in service life. It is necessary to seal both ends of the roller and apply lubricant to the bearings. Grease can also reduce mechanical friction, prevent mechanical wear and metal corrosion, and play a role in sealing and dust prevention; the roller 2 and the steel bar are driven to move through rolling friction, and the workers on the construction site drive the steel bar to move on the roller 2 by pushing one end of the steel bar; the roller can be driven to rotate by an electric drive such as a drive motor, which can further reduce the labor of on-site workers. In the arrangement of multiple steel bar conveying devices, the arrangement method can be to set an electrically driven steel bar conveying device between every two steel bar conveying devices, or all electrically driven steel bar conveying devices can be used, both of which can further improve the conveying efficiency of the steel bars.

[0023] In this embodiment, the bracket 3 includes two supporting feet 4 for suspending the roller, and the two supporting feet 4 are respectively fixed at both ends along the length direction of the base 1; the length of the roller 2 should not be greater than the length of the roller shaft 5, which can ensure that the roller 2 will not be deformed due to collision with the supporting feet 4 due to being too long during use, thereby extending the service life.

[0024] The two ends of the roller are respectively connected to the supporting feet, so as to be used to set the bracket and the roller as a whole on the base along the length direction of the base; the bracket 3 is arranged on the upper part of the base 1 through the supporting feet 4, and the supporting feet 4 and the base 1 can be connected by welding. The roller shaft 5 is rotatably connected to the supporting feet 4, and other mechanical connection methods can also be used for connection, which will not be repeated here.

[0025] In this embodiment, the positioning assembly includes a base leg 6 and a positioning tube 7, and the base leg 6 and the positioning tube 7 are arranged at the lower part of the base 1 to support the base 1; the base leg 6 needs to be made of a material with higher strength and can simultaneously bear the weight of the base 1, the transmission assembly and the steel bars. This scheme uses an I-beam as the base leg 6, and the length of the I-beam of the base bracket 6 is less than the I-beam used in the base 1. Other materials with high supporting strength can also be used as the base bracket 6, which will not be repeated here.

[0026] In this embodiment, the two ends of the lower part of the base 1 along the width direction are respectively connected to the base legs 6 and the positioning tubes 7, the base legs 6 are perpendicular to the base 1, and the positioning tubes 7 are cylindrical and connected to the base 1 on the side of the cylinder; the base legs 6 and the positioning tubes 7 are both connected to the base 1 by welding, and the base legs 6 are vertically welded to the base 1 to have a larger supporting area and maximize the supporting capacity. The positioning tubes 7 are welded to the base 1 on the side of the cylinder, and the positioning tubes 7 can be made of steel pipes at the construction site.

[0027] In this embodiment, the length of the base leg 6 is greater than the cross-sectional diameter of the positioning tube 7; the side of the base foot 6 close to the base 1 is provided with a positioning leg 8 for cooperating with the base foot 6 to position the base 1, the positioning leg 8 is perpendicular to the base and connected to the lower part of the base 1, and the length of the positioning leg 8 is greater than the length of the base leg; the positioning leg 8 can be cylindrical, and the bottom surface of the cylinder is connected to the lower part of the base 1 by welding, and at least two positioning legs 8 are provided.

[0028] In this embodiment, during the construction of the secondary lining steel bars of the tunnel, due to the different progress of different construction sections, the topography of the junction between the concrete floor of the tunnel and the inverted arch concrete is different in different construction sections. The topography of the junction is mainly divided into a plane shape and a staggered shape. The plane shape refers to the natural transition between the surface of the ground concrete and the lowest point of the inverted arch concrete, and the staggered shape refers to the surface of the ground concrete being higher than the lowest point of the inverted arch concrete to form a staggered shape. When in the plane shape, the positioning tube 7 of this scheme contacts the surface of the inverted arch concrete, and the positioning leg 8 is placed on the tunnel floor. The positioning tube 7 is cylindrical, and the side surface of the cylinder matches the curved arc-shaped inverted arch concrete surface. Since the diameter of the positioning tube 7 is smaller than the length of the positioning leg 8, the difference in length between the two is adjusted by the inverted arch. The curved surface of the arch itself is compensated and the positioning tube 7 does not slide, so the steel bar conveying device can be positioned as a whole at the construction position; when in a staggered shape, the positioning tube 7 of this scheme is placed on the ground of the tunnel, and the positioning legs 8 and the base support feet 6 are placed on the curved arc-shaped inverted arch concrete surface. The positioning legs 8 and the base support feet 6 are respectively in contact with the inverted arch concrete surface and generate friction. The positioning tube 7 can be used to position the steel bar conveying device as a whole at the construction position. Since the length of the positioning legs 8 is greater than the length of the base support feet 6, when in contact with the curved arc-shaped inverted arch concrete surface, it can ensure that the base 1 is horizontal based on the tunnel ground; the steel bar conveying device as a whole is perpendicular to the surface of the tunnel inverted arch along the length direction of the base 1 in a flat shape or a staggered shape.

[0029] In this embodiment, multiple steel bar conveying devices are arranged in parallel at a certain interval, and the steel bars are placed on the rollers 2 on each roller shaft 5. On-site construction workers push the steel bars from one end of the steel bars to roll on the rollers 2, thereby conveying the steel bars to the construction location. After the steel bars are conveyed to the inside of the tunnel, they need to be mechanically connected before they can be tied. The steel bars can be placed on the rollers 2, and the connecting ends of the two steel bars are dragged through the rollers 2 above the gap between the two steel bar conveying devices. A jack is placed at the gap to complete the mechanical connection of the steel bars. Since the bracket 3, the base 1 and the positioning assembly lift the rollers 2 to a set height, the jack can smoothly complete the mechanical connection of the steel bars. There is no need to place the steel bars on the ground for mechanical connection, which simplifies the construction steps and saves the labor of construction workers.

[0030] 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 field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A tunnel secondary lining steel bar conveying device, characterized in that: It includes a base, a conveying assembly and a positioning assembly, wherein the conveying assembly is arranged on the base and is used to convey the steel bars to the construction position by roller conveying, and the positioning assembly is used to position the base and the conveying assembly near the construction position; The conveying assembly includes a bracket and a roller arranged on the bracket, the bracket is fixed on the base, and the roller is used to support the steel bar and convey it by rolling; The positioning assembly comprises a base leg and a positioning tube. The base leg and the positioning leg are arranged at the lower part of the base and are used to support the base.

2. The tunnel secondary lining steel bar conveying device according to claim 1 is characterized in that: The roller comprises a roller shaft and a roller cylinder which is externally mounted on the roller shaft, and the length of the roller cylinder is not greater than the length of the roller shaft.

3. The tunnel secondary lining steel bar conveying device according to claim 1 is characterized in that: The support comprises two supporting feet for supporting the roller, and the two supporting feet are respectively fixed at two ends along the length direction of the base.

4. The tunnel secondary lining steel bar conveying device according to claim 3 is characterized in that: The two ends of the roller are respectively connected to the supporting feet, so as to be used to arrange the bracket and the roller as a whole on the base along the length direction of the base.

5. The tunnel secondary lining steel bar conveying device according to claim 1, characterized in that: The two ends of the lower part of the base along the width direction are respectively connected to the base legs and the positioning tube, the base legs are perpendicular to the base, and the positioning tube is cylindrical and connected to the base at the side of the cylinder.

6. The tunnel secondary lining steel bar conveying device according to claim 1, characterized in that: The length of the base legs is greater than the cross-sectional diameter of the positioning tube.

7. The tunnel secondary lining steel bar conveying device according to claim 1, characterized in that: A positioning leg is provided on one side of the base foot close to the base for cooperating with the base foot to position the base. The positioning leg is perpendicular to the base and connected to the lower part of the base.

8. The tunnel secondary lining steel bar conveying device according to claim 7, characterized in that: The length of the positioning leg is greater than the length of the base leg.

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