Tunnel primary support concrete construction device

Abstract

The utility model discloses a tunnel primary support concrete construction device which comprises a rectangular plastering plate body, a plastering opening is formed in the middle of the plastering plate body in the length direction, holes are formed in the plastering plate body in the width direction of the plastering opening at intervals to serve as spray pipe outlets, a material pipe body is arranged on the front face of the plastering plate body, and the material pipe body is a reducer pipe. The small-diameter end of the material pipe body is blocked, the large-diameter end of the material pipe body is bent upwards to be provided with a material pipe feeding port, spraying pipe bodies are arranged on the two sides of the material pipe body, holes are formed in the spraying pipe bodies to be connected with spraying pipe outlets, one end of each spraying pipe body is blocked, and the other end of each spraying pipe body is connected with a spraying pipe feeding port. Supporting plates are symmetrically arranged on the portions, on the two sides of the material pipe body, of the front face of the patter body, holes are formed in the supporting plates, and lug grabbing pin sleeves are arranged on the supporting plates. According to the device, multiple manual operations are integrated, so that the working efficiency is improved, and the labor cost and the equipment configuration cost are greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to civil engineering tunnel excavation initial support construction technical field, concretely is a kind of tunnel initial support concrete construction device. BACKGROUND

[0002] According to the different geological conditions of tunnel crossing stratum and the development of current domestic tunnel construction technology, at present stage, tunnel construction mainly has drill and blast method, heading machine method and other construction methods in our country. Since drill and blast method has simple construction method, extensive geological adaptability, small construction equipment maintenance cost and other advantages, it still occupies the dominant position in mountain tunnel construction method in our country. In construction process, especially in tunnel drilling and blasting, slag transportation, shotcrete, concrete lining support construction and other construction procedures, a large amount of dust is often generated, the existence of dust directly affects construction progress and economic benefits, more importantly, it seriously affects the physical and mental health of tunnel site construction personnel and management personnel, and site construction personnel often suffers from silicosis and other occupational diseases due to long-term inhalation of a large amount of dust.

[0003] In initial support step, wet spraying concrete on the wall surface of tunnel hole wall is needed at least twice to achieve the purpose of support, and currently, concrete wet spraying process is mostly used in initial support step. It is urgent to develop a new type of concrete construction device which has the advantages of wet spraying mechanical hand and can effectively solve the problems of concrete rebound and dust, so as to promote the development of tunnel construction to a more safe, efficient and environmentally friendly direction. CONTENT OF UTILITY MODEL

[0004] To solve the above technical problems, the utility model provides a kind of tunnel initial support concrete construction device.

[0005] The utility model adopts the following technical scheme: a kind of tunnel initial support concrete construction device, including oblong smearing board body, the middle part of smearing board body is provided with smearing mouth along length direction, smearing board body is provided with hole as the outlet of spray pipe along length direction on the width direction both sides of smearing mouth, smearing board body is provided with material pipe body on front, material pipe body is variable-diameter pipe, and material pipe outlet is provided with material pipe outlet in connection with smearing mouth along length, the small diameter end of material pipe body is blocked and is installed with concrete induction device, the large diameter end of material pipe body is bent and is provided with material inlet in the direction away from smearing board body, the both sides of material pipe body are provided with spray pipe body, and the hole is provided with hole and is connected with spray pipe outlet on spray pipe body, the end of spray pipe body corresponding to the small diameter end of material pipe body is blocked and is installed with spray material induction device, the end of spray pipe body corresponding to the large diameter end of material pipe body is bent and is provided with spray inlet in the direction away from smearing board body, smearing board body is provided with support structure on the side away from material inlet on front, support structure includes the support plate that is provided symmetrically on the both sides of material pipe body, and the hole is provided with ear pin sleeve on support plate, and ear pin sleeve is connected with excavator pin joint by excavator bucket pin.

[0006] Further, the lower edge of the smearing opening is provided with a round chamfer, and the outlet of the spray pipe is arranged on the round chamfer.

[0007] Further, the tail plate plate body is equal in length to the smearing plate plate body and is connected with the smearing plate plate body at the joint edge.

[0008] Further, the tail plate plate body is equal in length to the smearing plate plate body and is connected with the smearing plate plate body at the joint edge.

[0009] Further, the tail plate plate body is equal in length to the smearing plate plate body and is connected with the smearing plate plate body at the joint edge.

[0010] Further, the tail plate plate body is equal in length to the smearing plate plate body and is connected with the smearing plate plate body at the joint edge.

[0011] Further, the tail plate plate body is equal in length to the smearing plate plate body and is connected with the smearing plate plate body at the joint edge.

[0012] Further, the tail plate plate body is equal in length to the smearing plate plate body and is connected with the smearing plate plate body at the joint edge.

[0013] Further, the tail plate plate body is equal in length to the smearing plate plate body and is connected with the smearing plate plate body at the joint edge.

[0014] The utility model has the following beneficial effects:

[0015] 1. By optimizing the smearing plate design and the spray structure, the rebound phenomenon of the concrete in the spraying process is reduced, the concrete can be better attached to the tunnel wall, the support quality is improved, and the flatness and strength of the initial support of the tunnel are ensured.

[0016] 2. The device reduces the diffusion of dust in the spraying process by reasonably arranging the spraying system, and realizes accurate spraying control by being provided with a material spraying sensing device and a concrete sensing device, reduces the health hazards to the construction personnel, and improves the safety of the construction environment.

[0017] 3. The device adopts the combination design of the material pipe and the spray pipe, ensures the continuity and uniformity of the concrete spraying, and reduces the manual operation error through automatic control, improves the precision of the support.

[0018] 4. Compared with the traditional construction method, the device integrates multiple manual operations in one device, which not only improves the work efficiency, but also greatly reduces the labor cost and equipment configuration cost. DRAWINGS

[0019] Fig. 1 is the device side view of the utility model;

[0020] Fig. 2 is the device side view of the utility model;

[0021] Fig. 3 is the device front view of the utility model;

[0022] Fig. 4 is the device side view of the utility device.

[0023] In the figure: 1 - the board structure of smearing; 101 - the board body of smearing; 102 - the pipe body of material pipe; 103 - the material pipe inlet; 104 - the material pipe outlet; 105 - the pipe body of spray pipe; 106 - the inlet of spray pipe; 107 - the outlet of spray pipe; 108 - the smearing mouth; 109 - round chamfer;

[0024] 2 - the structure of tail plate; 201 - the tail plate board body; 202 - the tail plate lower ear ring; 203 - the tail plate lower ear ring bearing; 204 - the tail plate push rod ear ring; 205 - the tail plate push rod body; 206 - the tail plate oil cylinder; 207 - the tail plate oil cylinder ear ring; 208 - the tail plate upper ear ring bearing; 209 - the tail plate upper ear ring; 210 - the tail plate hinge; 211 - the tail plate hinge bearing;

[0025] 3 - the structure of end plate; 301 - the end plate board body; 302 - the end plate hinge; 303 - the end plate hinge bearing; 304 - the end plate lower ear ring; 305 - the end plate lower ear ring bearing; 306 - the end plate push rod ear ring; 307 - the end plate push rod body; 308 - the end plate oil cylinder; 309 - the end plate oil cylinder ear ring; 310 - the end plate upper ear ring bearing; 311 - the end plate upper ear ring;

[0026] 4 - the structure of support; 401 - the support plate; 402 - the connecting plate; 403 - the ear pin sleeve; 404 - the ear pin hole. DETAILED DESCRIPTION

[0027] In order to better understand the purpose, structure and function of the utility model, the tunnel primary support concrete construction device of the utility model is further described in detail below in combination with the drawings.

[0028] As Figs. 1-4 shown, a tunnel primary support concrete construction device includes the board structure of smearing 1, the structure of tail plate 2, the structure of end plate 3 and the structure of support 4.

[0029] The trowel structure 1 is composed of a trowel plate body 101, a material pipe body 102, and two spray pipe bodies 105. The trowel plate body 101 is a cuboid steel plate with hinge joints at the tail and both sides. A material spraying port 108 is provided in the middle of the trowel plate body 101 along the length direction. A circular chamfer 109 is provided at the lower edge of the material spraying port 108, and two rows of circular holes are provided on the circular chamfer 109 as spray pipe outlets 107. The material pipe body 102 is a variable-diameter steel pipe with an opening as a material pipe outlet 104. The material pipe outlet 104 coincides with the material spraying port 108. The small-diameter end of the material pipe body 102 is sealed and a concrete sensing device is installed. The large-diameter end of the material pipe body 102 is a 90° elbow pipe as a material pipe inlet 103 for connecting with a concrete pump pipe. The two sides of the material pipe body 102 are provided with spray pipe bodies 105. The pipe body of the spray pipe body 105 is provided with a circular hole for communication with the spray pipe outlet 107. The end of the spray pipe body 105 corresponding to the small-diameter end of the material pipe body 102 is sealed and a spray material sensing device is installed. The end of the spray pipe body 105 corresponding to the large-diameter end of the material pipe body 102 is a 90° elbow pipe as a spray pipe inlet 106 for connecting with high-pressure air and admixture.

[0030] The concrete sensing device and the spray material sensing device can use a material level sensor. The sensing device can automatically adjust the spraying amount of concrete to ensure uniform distribution of concrete during construction. The concrete sensing device and the spray material sensing device enable accurate control of the flow of the material pipe and the spray pipe, thereby avoiding excessive or insufficient concrete spraying.

[0031] The material pipe body 102 is designed with variable diameter to maintain stable flow and pressure of concrete from the high-pressure pump pipe to the material spraying port 108, ensuring uniform distribution of concrete during spraying. The connection between the material pipe body 102 and the spray pipe body 105 is monitored in real time by the sensing device to control the spraying accuracy of the concrete and avoid waste and rebound.

[0032] The trowel plate body 101 is designed with a specific material spraying port 108 and circular chamfer 109 structure, which helps to better control the flow and spraying angle of concrete during spraying. The spray pipe outlet 107 is used in cooperation with the circular chamfer 109 to effectively reduce the rebound phenomenon of concrete and ensure smooth spraying process.

[0033] The support structure 4 is composed of two support plates 401, one connecting plate 402 and four ear pin sleeves 403. The support plate 401 is a right-angled triangular steel plate, and the right-angled long side is welded to the trowel plate body 101. The two support plates 401 are welded to the connecting plate 402. Two holes are vertically opened on one side of the right-angled short side of the support plate 401, and the ear pin sleeves 403 are welded. The holes of the ear pin sleeves 403 are ear pin holes 404, which are connected to the excavator pin through the excavator bucket pin. The support structure 4 is connected to the excavator through the ear pin sleeves 403, which facilitates the movement and positioning of the equipment.

[0034] The tail plate structure 2 is composed of two tail plate bodies 201, four upper and lower ear rings, two tail plate oil cylinders 206 and two tail plate hinges 210. The tail plate body 201 is a rectangular steel plate, and the length of the tail plate body 201 is equal to the length of the trowel plate body 101 and the length of the tail plate body 201 is equal to the length of the trowel plate body 101. The left and right sides of the trowel plate body 101 are connected by the tail plate hinge 210 and the tail plate hinge bearing 211, and the support plate 401 is connected by the upper and lower ear rings through the tail plate oil cylinder 206. Specifically, the tail plate body 201 is provided with a tail plate lower ear ring 202, and the outer side of the support plate 401 is provided with a tail plate upper ear ring 209. The tail plate lower ear ring 202 is connected to the tail plate push rod ear ring 204 provided on the tail plate push rod body 205 of the tail plate oil cylinder 206 through the tail plate lower ear ring bearing 203, and the tail plate upper ear ring 209 is connected to the tail plate oil cylinder ear ring 207 of the tail plate oil cylinder 206 through the tail plate upper ear ring bearing 208. The tail plate oil cylinder 206 adjusts the extension and retraction to make the tail plate body 201 be centered on the tail plate hinge 210 and be at a certain angle with the trowel plate body 101 in the direction of the tunnel contour. The flexible adjustment of the support plate 401 and the tail plate structure 2 can adapt to different tunnel construction environments and geological conditions, and ensure the stability and adaptability of the equipment.

[0035] The end plate structure 3 is composed of two end plate bodies 301, four sets of upper and lower ear rings, two end plate oil cylinders 308 and two sets of end plate hinges 302. The end plate body 301 is a rectangular steel plate, the length of the two end plate bodies 301 is equal to the sum of the width of the plaster plate body 101 and the two side tail plate bodies 201, and is connected with the unfolded tail plate body 201, the two end plate bodies 301 are connected with the plaster plate body 101 at the tail end through the end plate hinge 302 and the end plate hinge bearing 303, the end plate body 301 is connected with the plaster plate body 101 through the upper and lower ear rings and the end plate oil cylinder 308, specifically, the end plate body 301 is provided with an end plate lower ear ring 304, the upper surface of the plaster plate body 101 is provided with an end plate upper ear ring 311, the end plate lower ear ring 304 is connected with the end plate push rod ear ring 306 provided on the end plate push rod body 307 of the end plate oil cylinder 308 through the end plate lower ear ring bearing 305, and the end plate upper ear ring 311 is connected with the end plate oil cylinder ear ring 309 of the end plate oil cylinder 308 through the end plate upper ear ring bearing 310. The end plate oil cylinder 308 adjusts the extension and retraction to make the end plate body 301 with the end plate hinge 302 as the center and the plaster plate body 101 in the tunnel line direction to be 90° for making the initial support without arch support, and to be 0° for making the initial support with arch support.

[0036] The utility model solves the problems of low construction efficiency, concrete aggregate rebound, large amount of dust, poor initial support flatness and poor construction environment. The traditional tunnel shotcrete uses many materials and has high cost, needs 3-4 people to cooperate, and has many supporting equipment and low efficiency, which cannot meet the high quality and high efficiency of the initial support. The utility model greatly improves the initial support flatness effect, ensures the entity quality of the initial support, and can timely find geological disasters such as rock burst, sudden mud, water gushing and collapse, and avoid safety and quality risks in the construction process.

[0037] It can be understood that the utility model is described through some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to the features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, the features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the application belong to the scope protected by the utility model.

Claims

1. A device for the construction of a tunnel primary lining of concrete, characterized in that The application relates to a concrete placing plate, which comprises a rectangular placing plate body (101), a material placing opening (108) is arranged in the middle of the placing plate body (101) along the length direction, a hole is arranged on both sides of the material placing opening (108) along the length direction as a spray pipe outlet (107), a material pipe body (102) is arranged on the front surface of the placing plate body (101), the material pipe body (102) is a variable-diameter pipe, a material pipe outlet (104) is arranged on the material pipe body (102) and connected with the material placing opening (108), the small-diameter end of the material pipe body (102) is blocked and provided with a concrete sensing device, the large-diameter end of the material pipe body (102) is bent towards the direction away from the placing plate body (101) and provided with a material pipe inlet (103), a spray pipe body (105) is arranged on both sides of the material pipe body (102), a hole is arranged on the spray pipe body (105) and connected with the spray pipe outlet (107), the end of the spray pipe body (105) corresponding to the small-diameter end of the material pipe body (102) is blocked and provided with a spray material sensing device, the end of the spray pipe body (105) corresponding to the large-diameter end of the material pipe body (102) is bent towards the direction away from the placing plate body (101) and provided with a spray pipe inlet (106), a support structure (4) is arranged on the front surface of the placing plate body (101) and away from the material pipe inlet (103), the support structure (4) comprises support plates (401) symmetrically arranged on both sides of the material pipe body (102), a hole is arranged on the support plate (401) and provided with a grab ear pin sleeve (403), and the grab ear pin sleeve (403) is connected with an excavator pin through an excavator bucket pin.

2. The device for the construction of initial support concrete of tunnels according to claim 1, characterized in that, A round chamfer (109) is arranged on the lower edge of the material placing opening (108), and the spray pipe outlet (107) is arranged on the round chamfer (109).

3. The device for the construction of initial support concrete of tunnels according to claim 1, characterized in that, The width direction both ends of the placing plate body (101) are respectively connected with rectangular tail plate bodies (201) through hinges, tail plate oil cylinders (206) are arranged between the tail plate bodies (201) and the support plates (401), and the two ends of the tail plate oil cylinders (206) are respectively hingedly connected with the support plates (401) and the tail plate bodies (201).

4. The device for the construction of initial support concrete of tunnels according to claim 3, characterized in that, The length of the tail plate body (201) is equal to that of the placing plate body (101), and the tail plate body (201) is connected with the placing plate body (101) at the joint edge.

5. The device for the construction of initial tunnel lining concrete according to claim 3 or 4, characterized in that, The end of the placing plate body (101) away from the support structure (4) is connected with a rectangular end plate body (301) through a hinge, an end plate lower ear ring (304) is arranged on the end plate body (301), an end plate oil cylinder (308) is arranged on the front surface of the placing plate body (101), and the two ends of the end plate oil cylinder (308) are respectively hingedly connected with the placing plate body (101) and the end plate lower ear ring (304).

6. The device for the construction of initial support concrete of tunnels according to claim 5, characterized in that, The length of the end plate body (301) is equal to the sum of the width of the placing plate body (101) and the tail plate body (201), and the end plate body (301) is connected with the edge of the unfolded tail plate body (201).

7. The device for the construction of initial support concrete of tunnels according to claim 5, characterized in that, The end plate body (301) comprises two symmetrically arranged plates.

8. The tunnel primary lining concrete construction apparatus according to claim 1, characterized by Two groups of grab ear pin sleeves (403) are vertically and intervally arranged on the support plates (401).

9. The device for the construction of initial tunnel lining concrete according to claim 1 or 8, characterized in that, Connecting plates (402) are arranged between the support plates (401).

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