Concrete pouring warehousing feeding device for secondary lining arch wall of main roadway in underground coal mine

Abstract

The utility model relates to a coal mine underground main roadway secondary lining arch wall concrete pouring warehousing feeding device which comprises a feeding pipe and a pump pipe, and the upper end and the lower end of the feeding pipe are connected with a steel formwork and an upper flange plate in a sleeved mode respectively. The upper end of the pump pipe is connected with a lower flange plate in a sleeved mode, the four corners of the upper flange plate are connected with the four corners of the lower flange plate through bolts and nuts, a fixed gap is reserved between the upper flange plate and the lower flange plate, the opposite faces of the two flange plates are connected with limiting blocks with the same height as the fixed gap respectively, and the two limiting blocks are arranged on the two sides of a center opening of the flange plates in parallel. A valve plate used for cutting off communication between the feeding pipe and the pump pipe is movably connected between the two opposite side faces of the two limiting blocks in an inserted mode. The device is simple in structure, can be repeatedly used, facilitates connection and disconnection of the feed pipe and the pump pipe, and is favorable for guaranteeing the pouring quality of a secondary lining concrete arch wall (top) of a large roadway in an underground coal mine.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a storage feeding device for pouring concrete into a second lining arch wall of a large tunnel in an underground coal mine. Background Art

[0002] In the past, during the pouring of the secondary lining concrete in large tunnels in coal mines, the plug device was usually not installed at the feed pipe mouth, which often resulted in the phenomenon that the arch concrete was not dense after the secondary lining arch wall (top) concrete was poured. The gap between the feed pipe and the feed port reserved on the template was large, which made it easy for concrete to overflow, resulting in quality defects in the pouring of concrete around the feed port. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the utility model provides a feeding device for pouring concrete into a warehouse for the second lining arch wall of a large tunnel in an underground coal mine. The device has a simple structure, can be reused, and is beneficial to ensuring the pouring quality of the second lining concrete arch wall (top) of a large tunnel in an underground coal mine.

[0004] The utility model is realized through the following technical solutions:

[0005] Provided is a feeding device for pouring concrete into a warehouse for the second lining arch wall of a large tunnel in an underground coal mine, comprising a feeding pipe and a pump pipe, wherein the upper and lower ends of the feeding pipe are respectively sleeved and connected with a steel template and an upper flange plate; the upper end of the pump pipe is sleeved and connected with a lower flange plate, the four corners of the upper flange plate are connected to the four corners of the lower flange plate by bolts and nuts, a fixed gap is left between the upper flange plate and the lower flange plate, and the opposite sides of the two flange plates are respectively connected with limit blocks of the same height as the fixed gap, the two limit blocks are arranged in parallel on both sides of the central opening of the flange plate, and a valve plate that can be used to cut off the connection between the feeding pipe and the pump pipe is movably inserted between the two side surfaces facing the two limit blocks.

[0006] Furthermore, the width of the valve plate is equal to the horizontal distance between the two limit blocks.

[0007] Furthermore, two side surfaces facing each other of the two limit blocks are provided with sliding grooves, and sliding blocks which are slidably matched with the sliding grooves are respectively formed on both sides of the insertion end of the valve plate.

[0008] The limit block slides with the sliders on both sides of the valve plate through the slide groove, which can ensure the stability of the movement of the valve plate and ensure that the connection and disconnection between the feed pipe and the pump pipe can remain stable.

[0009] Furthermore, each limit block is fixed with a guide rod passing through the slider in the length direction in the slide slot, and a spring sleeved on the guide rod is connected between the slider and the end of the slide slot, and the spring is in a stretched state when the valve plate is opened and closed.

[0010] By arranging a guide rod in the slide groove in cooperation with a spring, the elastic force of the spring is utilized so that the spring can pull the valve plate to automatically return to its original position, thereby keeping the feed pipe and the pump pipe in a cut-off state when no external force intervenes.

[0011] Furthermore, two parallel blocking bars are respectively arranged on the upper surface and the lower surface of the valve plate on both sides of the feed pipe opening and the pump pipe opening, and the blocking bars are arranged parallel to the limit blocks.

[0012] By setting blocking strips to block the concrete in the feed pipe and pump pipe, the concrete is prevented from entering the slide grooves on both sides, affecting the sliding connection of the valve plate, thereby improving the stability of use.

[0013] Furthermore, a mounting groove is formed on the upper surface of the valve plate near the insertion end of the valve plate, and an elastic protrusion is vertically installed in the mounting groove. The upper end of the elastic protrusion is located on one side of the insertion end of the valve plate and is an upward inclined surface, and the other side of the elastic protrusion is a vertical surface. A positioning groove with the same shape as the upper end of the elastic protrusion and for the elastic protrusion to be inserted and positioned is provided at the position of the upper flange plate opposite the mounting groove.

[0014] An installation groove is set on the upper surface of the valve plate and an elastic protrusion is installed. A corresponding positioning groove is opened on the upper flange plate. When the valve plate is inserted into the fixed gap, the elastic protrusion is positioned using the vertical surface of the elastic protrusion to locate and clamp the position of the valve plate so that it can always cover the center hole on the upper and lower flange plates, thereby cutting off the connection between the two. When the feed pipe and the pump pipe need to be connected, when the valve plate is pulled away from the fixed gap, the inclined surface of the elastic protrusion and the inclined surface of the positioning groove push each other, which helps to pull the elastic protrusion out of the positioning groove, thereby facilitating the reverse movement of the valve plate.

[0015] Preferably, a handle is connected to the other end of the valve plate opposite to the insertion end.

[0016] By providing a handle, it is convenient to control the insertion and withdrawal of the valve plate, and it is convenient to control the connection and disconnection of the feed pipe and the pump pipe.

[0017] Beneficial effects of the utility model:

[0018] The utility model is designed to insert the valve plate into the fixed gap between the upper flange plate and the lower flange plate. By moving the valve plate, the feed pipe and the pump pipe can be connected and cut off. The valve plate is inserted when needed to effectively prevent the backflow of the warehouse concrete.

[0019] The overall structure is simple, easy to operate, highly practical, and reusable. The valve plate can be slidably set in the slide slot by using the slider and the slide slot, and the spring tension enables it to have a reset effect. When no external force is involved, the valve plate can remain in the inserted state, no additional force is required, and the operation is simple. At the same time, the plug-in cooperation of the elastic protrusion and the positioning groove helps to maintain the stability of the valve plate insertion state. When necessary, the valve plate is pulled to connect the feed pipe and the pump pipe, so that the concrete can pass smoothly, which can ensure that the second lining arch wall (top) of the large tunnel in the coal mine is poured densely. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 It is a cross-sectional schematic diagram of the utility model.

[0022] Figure 3 It is a schematic diagram of the connection structure of the upper template, the feed pipe and the upper flange plate in the utility model.

[0023] Figure 4 This is a schematic diagram of the installation of the valve plate in the utility model.

[0024] Figure 5 It is a schematic diagram of the cooperation between the elastic protrusion and the positioning groove in the utility model.

[0025] As shown in the figure:

[0026] 1. Steel formwork, 2. Bolts and nuts, 3. Upper flange plate, 4. Feed pipe, 5. Valve plate, 6. Limit block, 7. Slide groove, 8. Guide rod, 9. Slider, 10. Lower flange plate, 11. Elastic protrusion, 12. Spring, 13. Handle, 14. Positioning groove, 15. Pump pipe, 16. Blocking strip. DETAILED DESCRIPTION

[0027] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0028] A feeding device for pouring concrete into a warehouse for the second lining arch wall of a large tunnel in an underground coal mine comprises a feeding pipe 4 and a pump pipe 15. The upper and lower ends of the feeding pipe 4 are respectively sleeved and connected with a steel template 1 and an upper flange plate 3; the upper end of the pump pipe 15 is sleeved and connected with a lower flange plate 10. The four corners of the upper flange plate 3 are connected to the four corners of the lower flange plate 10 by bolts and nuts 2. A fixed gap is left between the upper flange plate 3 and the lower flange plate 10. The opposite sides of the two flange plates are respectively connected with limit blocks 6 of the same height as the fixed gap. The two limit blocks 6 are arranged in parallel on both sides of the central opening of the flange plate. A valve plate 5 that can be used to cut off the connection between the feeding pipe 4 and the pump pipe 15 is movably inserted between the two side surfaces opposite to the two limit blocks 6.

[0029] The width of the valve plate 5 is equal to the horizontal distance between the two limit blocks 6 .

[0030] The two sides facing the two limit blocks 6 are provided with slide grooves 7, and the two sides of the insertion end of the valve plate 5 are respectively formed with sliders 9 that slide with the slide grooves 7. The other end of the valve plate 5 facing the insertion end is connected with a handle 13.

[0031] Each limit block 6 is fixed with a guide rod 8 penetrating the slider 9 along the length direction in the slide slot 7. A spring 12 sleeved on the guide rod 8 is connected between the slider 9 and the end of the slide slot 7. The spring 12 is in a stretched state when the valve plate 5 is opened and closed. In order to improve the stability of the valve plate 5 and prevent concrete from entering the slide slot 7, two parallel blocking bars 16 are respectively arranged on the upper and lower surfaces of the valve plate 5 on both sides of the opening of the feed pipe 4 and the opening of the pump pipe 15. The blocking bars 16 are arranged parallel to the limit block 6.

[0032] The upper surface of the valve plate 5 is recessed to form a mounting groove near the insertion end of the valve plate 5, and an elastic protrusion 11 is vertically installed in the mounting groove. The elastic protrusion 11 is installed in the mounting groove through a reset spring. The upper end of the elastic protrusion 11 is located on one side of the insertion end of the valve plate 5 and is an upward inclined surface, and the other side of the elastic protrusion 11 is a vertical surface. The upper flange plate 3 is provided with a positioning groove 14 which has the same shape as the upper end of the elastic protrusion 11 and is provided for the elastic protrusion 11 to be inserted and positioned at a position opposite to the mounting groove.

[0033] The utility model is used for the construction of pouring concrete into a warehouse for the second lining arch wall (top) of a large tunnel in a coal mine. After pouring the concrete, the valve plate 5 slidably connected to the limit block 6 can be used to insert it into the fixed gap between the upper flange plate 3 and the lower flange plate 10 to quickly cut off the connection between the pump pipe 15 and the feed pipe 4, which can effectively prevent the backflow and degassing of the arch wall (top) concrete at the end of pouring, so that the gap between the feed pipe and the template will not overflow with concrete, thereby improving the quality of concrete pouring.

[0034] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A feeding device for pouring concrete into a warehouse for the second lining arch wall of a large tunnel in a coal mine, comprising a feeding pipe and a pump pipe, wherein the upper and lower ends of the feeding pipe are respectively sleeved and connected with a steel template and an upper flange plate; the upper end of the pump pipe is sleeved and connected with a lower flange plate, characterized in that: The four corners of the upper flange plate are connected to the four corners of the lower flange plate by bolts and nuts. A fixed gap is left between the upper flange plate and the lower flange plate. The two flange plates are respectively connected to limit blocks with the same height as the fixed gap. The two limit blocks are arranged in parallel on both sides of the central opening of the flange plate. A valve plate that can be used to cut off the connection between the feed pipe and the pump pipe is movably inserted between the two side surfaces facing the two limit blocks.

2. The device for pouring concrete into the warehouse for the second lining arch wall of a main lane in an underground coal mine according to claim 1 is characterized in that: The width of the valve plate is equal to the horizontal distance between the two limit blocks.

3. The device for pouring concrete into the warehouse for the second lining arch wall of a main tunnel in an underground coal mine according to claim 1 is characterized in that: Slide grooves are provided on the two side surfaces facing the two limit blocks, and sliding blocks which are slidably matched with the slide grooves are respectively formed on both sides of the insertion end of the valve plate.

4. The device for pouring concrete into the warehouse for the second lining arch wall of a main lane in an underground coal mine according to claim 3 is characterized in that: Each limit block is fixed with a guide rod penetrating the slider in the length direction in the slide slot, and a spring sleeved on the guide rod is connected between the slider and the end of the slide slot. The spring is in a stretched state when the valve plate is opened and closed.

5. The device for pouring concrete into the warehouse for the second lining arch wall of a main lane in an underground coal mine according to claim 4 is characterized in that: The upper surface and the lower surface of the valve plate are respectively provided with two parallel blocking bars on both sides of the feed pipe opening and the pump pipe opening, and the blocking bars are arranged in parallel with the limit blocks.

6. The device for pouring concrete into the warehouse for the second lining arch wall of a main tunnel in an underground coal mine according to claim 1 is characterized in that: The upper surface of the valve plate is concavely provided with a mounting groove near the insertion end of the valve plate, and an elastic protrusion is vertically installed in the mounting groove. The upper end of the elastic protrusion is located on one side of the insertion end of the valve plate and is an upward inclined surface, and the other side of the elastic protrusion is a vertical surface. The upper flange plate is provided with a positioning groove which has the same shape as the upper end of the elastic protrusion and is provided for the elastic protrusion to be inserted and positioned at a position opposite to the mounting groove.

7. The device for pouring concrete into the warehouse for the second lining arch wall of a main tunnel in an underground coal mine according to claim 1 is characterized in that: The other end of the valve plate opposite to the insertion end is connected with a handle.

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