CN210003300U - Longitudinal dispersive pouring device for tunnel secondary lining concrete - Google Patents

Abstract

The utility model discloses a longitudinally dispersed grouting device for tunnel secondary lining concrete, which comprises a traveling trolley, a slurry conveying mechanism connected with the traveling trolley, and a longitudinal shifting grouting mechanism arranged on the traveling trolley; The grouting mechanism includes a longitudinal moving trolley, a clamping adjustment assembly located on the longitudinal moving trolley, and a grouting nozzle connected to the clamping adjustment assembly. The grouting gun is connected to the slurry conveying mechanism; the device adopts The backward-type continuous conveying and pouring method of concrete is used for pouring backwards continuously. Using the cooperation of the conveying pressure of the concrete pump in the slurry conveying mechanism, the overflow diffusion effect and the gravitational field, the continuous pouring is dispersed and continuously poured to the front and both sides. Its structure is reliable and the construction is convenient. , which can greatly improve the perfusion quality of the tunnel secondary lining, ensure the perfusion thickness of the secondary lining, and form a tunnel structure with uniform tunnel thickness.

Description

Longitudinal dispersive pouring device for tunnel secondary lining concrete

technical field

The utility model relates to the technical field of tunnel engineering, in particular to a longitudinally dispersed pouring device for tunnel secondary lining concrete.

Background technique

At present, all kinds of tunnels constructed by the drilling and blasting method in China have generally been constructed with integral mobile tunnel formwork trolleys. It is a ring structure, and the concrete is transported radially upward, and the two-lined concrete method is used. Due to the limitation of the spacing and height of the pouring points, the concrete is limited by the action of gravity and the slump of the concrete itself, which will inevitably cause the concrete to be difficult to overcome when pouring. Insufficient gravity and flow dispersion are difficult, forming a conical accumulation with a slump radius around the pouring point, and forming an area far from the pouring port where the concrete cannot be dispersed and covering, forming a triangle at the connection part of the accumulation body and cannot be poured and filled. This is the formation principle of the current tunnel construction tunnel lining voiding and insufficient thickness of the tunnel secondary lining. The use of this method of construction is the main reason for the defects of the current process of the local shortage of the thickness of the secondary lining of the tunnel and the quality of the back cavity. At the same time, the radial interval pouring concrete process is easy to form an air separation wall effect on the pouring port section, which hinders the continuous pouring of the concrete. Causes voids and insufficient lining thickness. Since the formwork trolley currently uses a plane-attached vibrator, it is vibrated and tamped after the concrete is poured and before the initial setting. , which is the secondary reason for the voiding of the secondary lining in the current tunnel construction.

Utility model content

The purpose of the utility model is to provide a longitudinally dispersed pouring device for tunnel secondary lining concrete, so as to solve the problems of insufficient pouring thickness behind the existing tunnel lining and the quality defect of the empty secondary lining.

The technical solution of the present invention to solve the above technical problems is as follows: a longitudinally dispersed grouting device for tunnel secondary lining concrete, comprising a traveling trolley, a slurry conveying mechanism connected with the traveling trolley, and a longitudinal shifting grouting arranged on the traveling trolley mechanism;

The longitudinal-moving grouting mechanism includes a longitudinal-moving trolley, a clamping adjustment assembly located on the longitudinal-moving trolley, and a grouting nozzle connected to the clamping adjustment assembly. The grouting gun is connected to the slurry conveying mechanism.

Further, the longitudinal moving trolley includes a vehicle frame, a traveling mechanism arranged on the vehicle frame, a lifting guide rail vertically arranged at the four peripheral corners of the vehicle frame, a lifting frame matched with the lifting guide rail, and a lifting frame hinged on the lifting guide rail. The swing frame on the frame, the clamping adjustment assembly is arranged on the swing frame, and the traveling mechanism includes a traveling wheel arranged at the bottom end of the frame and a drive arranged on the frame and driving the traveling wheel to move A motor, and the traveling trolley is provided with a longitudinal track matched with the traveling wheels.

Further, the clamping adjustment assembly includes a support plate disposed on the swing frame, a clamp assembly disposed on the support plate, a horizontal adjustment member disposed between the support plate and the swing frame, A lift adjustment assembly vertically connected between the frame and the lift frame, an angle adjustment assembly inclined between the lift frame and the swing, the grouting barrel is located on the support plate and penetrates through In the clamping assembly, a push-pull assembly parallel to the grouting gun barrel is arranged between the grouting gun barrel and the support plate.

Further, the clamping assembly includes two boxes located on the support plate and arranged at intervals, a rotating shaft axially arranged in the casing, and a clamping wheel mounted on the rotating shaft, and the bottom end of the rotating shaft is connected to There is a driving motor that drives the rotating shaft to rotate, a gap is formed between the two boxes, and the grouting barrel penetrates the gap and is clamped between the two clamping wheels.

Further, the horizontal adjustment member includes a connecting plate vertically disposed on the swing frame and a horizontal telescopic member disposed on the connecting plate, and the end of the telescopic member away from the connecting plate is connected to the support board.

Further, the lift adjustment assembly includes a lift member disposed on the frame and a fixing plate disposed at an end of the lift member away from the frame, and the fixing plate is disposed on the lift frame.

Further, the angle adjustment assembly is inclinedly arranged on the inclined plate on the frame and the inclined telescopic piece connected to the inclined plate, and the end of the inclined telescopic piece away from the support plate is connected to the On the swing frame, there is an included angle between the oblique telescopic element and the horizontal plane of the frame.

Further, the push-pull assembly includes a hoop arranged on the grouting barrel and a push-pull member connected to the hoop, and the end of the push-pull member away from the hoop is connected to the support plate .

Further, the grouting barrel includes an upper pipe body and a lower pipe body that cooperate with each other and have a semi-circular structure, a plate member arranged on the edge of the upper pipe body and the edge of the lower pipe body, and a locking plate running through the plate member bolts, and a sealing member is arranged between the plate member of the upper pipe body and the plate member of the lower pipe body.

Further, the slurry conveying mechanism includes a ground pump hinged with the traveling trolley and a connecting pipeline connected to the ground pump, and the end of the connecting pipeline remote from the ground pump is connected with the grouting gun barrel.

The utility model has the following beneficial effects: the tunnel secondary lining concrete longitudinally dispersed pouring device provided by the present invention adopts the backward continuous conveying and pouring mode of concrete for continuous backward pouring, and utilizes the conveying pressure of the concrete pump in the slurry conveying mechanism. With the cooperation of overflow diffusion effect and gravitational field, it is dispersed and continuously poured to the front end and to both sides. Its structure is reliable and the construction is convenient. Tunnel structure; in which the continuous pouring process of dynamic concrete conveying along the direction of the tunnel centerline is adopted to increase the height of the pouring point of the secondary lining concrete, increase the potential energy of the concrete entering the formwork system, and improve the flow and dispersion conditions of the concrete; adopt the longitudinal linear conveying along the tunnel to make During the conveying process, the concrete does not sacrifice height potential energy, maintains the conveying height of the concrete, is conveyed along the axis of the tunnel, disperses along the direction of the tunnel outline, and utilizes the retained potential energy to gravitationally diffuse along the direction of the tunnel outline to ensure that the concrete diffuses and forms a continuous Arc face.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Figure 2 is a side view of the utility model;

Fig. 3 is the enlarged schematic diagram at A place in Fig. 2;

Fig. 4 is the schematic diagram of the longitudinal shift grouting mechanism in the utility model;

FIG. 5 is a schematic diagram of the clamping adjustment assembly in the utility model;

6 is a schematic diagram of the structure of the grouting gun barrel in the utility model.

Detailed ways

The principles and features of the present invention will be described below with reference to the accompanying drawings, and the examples are only used to explain the present invention, and are not intended to limit the scope of the present invention.

As shown in FIGS. 1 to 2 , the tunnel secondary lining concrete longitudinally dispersed grouting device includes a traveling trolley 1 , a slurry conveying mechanism 2 connected to the traveling trolley 1 , and a longitudinal shifting grouting mechanism arranged on the traveling trolley 1 . The traveling trolley 1 is an existing trolley in tunnel construction, which is mainly used for binding reinforcement cages and laying waterproof boards. The slurry conveying mechanism 2 includes a ground pump hinged to the trolley and a connecting pipeline connected to the ground pump. The connecting pipeline is used to connect the ground pump and the grouting nozzle 5, and the ground pump provides the grouting nozzle 5 with a concrete source. Longitudinal grouting mechanism is used to retreat a certain distance during the grouting process to realize continuous retreat for grouting.

The longitudinal grouting mechanism includes a longitudinal trolley 3, a clamping adjustment assembly 4 located on the longitudinal translation trolley 3, and a grouting nozzle 5 connected to the clamping adjustment assembly 4. The grouting gun barrel 5 is connected to the The slurry transport mechanism 2 is connected. The longitudinal movement trolley 3 can move longitudinally on the traveling trolley 1 for an appropriate distance, and its movement distance is adapted to the length of the trolley. of continuous backward perfusion. The clamping adjustment assembly 4 is used to clamp and adjust the grouting nozzle 5, and adjust the left and right position and the pitch position of the grouting nozzle 5, so as to facilitate the alignment and insertion into the interior of the reinforcement cage.

Wherein, the longitudinal moving trolley 3 includes a vehicle frame 30 , a traveling mechanism arranged on the vehicle frame 30 , lifting guide rails 31 vertically arranged at the four peripheral corners of the vehicle frame 30 , and a lifting frame matched with the lifting guide rail 31 . 32 and a swinging frame 33 hinged on the lifting frame 32, the clamping adjustment assembly 4 is arranged on the swinging frame 33, and the traveling mechanism includes a traveling wheel arranged at the bottom end of the frame 30 and a A drive motor is mounted on the frame 30 and drives the traveling wheels to move, and the traveling trolley 1 is provided with a longitudinal track matched with the traveling wheels. The traveling wheel is driven by the driving motor to move on the track, so as to ensure the reliability of the longitudinal movement of the longitudinal moving trolley 3 . The lifting frame 32 cooperates with the lifting guide rail 31 to realize the adjustment of the height position of the swing frame 33 and the clamping adjustment assembly 4 .

The clamping adjustment assembly 4 includes a support plate 40 disposed on the swing frame 33, a clamp assembly disposed on the support plate 40, a horizontal adjustment member disposed between the support plate 40 and the swing frame 33, a vertical connection at the The lifting adjustment assembly between the frame 30 and the lifting frame 32, the angle adjustment assembly inclinedly connected between the lifting frame 32 and the swing frame 33, the grouting gun barrel 5 is located on the support plate 40 and penetrates the clamping assembly , a push-pull assembly parallel to the grouting gun barrel 5 is arranged between the grouting gun barrel 5 and the support plate 40 . The clamping assembly is used to clamp the grouting gun barrel 5 and drive the grouting gun barrel 5 to move in a large range in the longitudinal direction. The horizontal adjustment member is used to adjust the grouting gun barrel 5 in the horizontal direction. The lifting adjustment assembly is used to adjust the height of the lifting frame 32 along the lifting guide rail 31, so as to adjust the height of the grouting gun barrel 5, so that the grouting gun barrel 5 is aligned and inserted into the tunnel for filling the template. The angle adjustment assembly is used to adjust the pitch angle of the grouting barrel 5 . The push-to-receive assembly is used to move the grouting gun barrel 5 back and forth in a small range in the longitudinal direction, so as to avoid the combination of the gun barrel and the concrete in the process of the pipe string.

The clamping assembly includes two box bodies 401 located on the support plate 40 and arranged at intervals, a rotary 402 axially arranged in the box body 401 and a clamping wheel 403 installed on the rotary shaft 402 , the bottom end of the rotating shaft 402 is connected with a driving motor that drives the rotating shaft 402 to rotate, there is a gap between the two boxes 401, and the grouting barrel 5 penetrates the gap and is clamped on the two clamping wheels 403 between. The box body 401 provides support for the rotating shafts 402, and the driving motor acts on one of the rotating shafts 402, so that the rotating shaft 402 acts as a driving member, and the other rotating shaft 402 acts as a driven member. When in use, the rotating shaft 402 is driven to rotate by the driving motor, thereby driving the relative rotation of the clamping wheel 403, thereby driving the longitudinal movement of the grouting barrel 5 in and out.

The angle adjustment assembly is obliquely arranged on the inclined plate 320 on the frame 30 and the inclined telescopic member 321 connected to the inclined plate 320 , and the inclined telescopic member 321 is away from the end of the support plate 40 . The part is connected to the swing frame 33 , and there is an included angle between the oblique telescopic element 321 and the horizontal plane of the frame 30 . The lifting member 301 adopts a hydraulic oil cylinder. One end of the fixed plate 302 is connected to the piston rod of the hydraulic oil cylinder, and the other end is connected to the swing frame 33. The cylinder is connected to the frame 30. The telescopic movement of the piston rod realizes the adjustment of the height of the grouting barrel 5, which is convenient and reliable.

The horizontal adjusting member includes a connecting plate 330 vertically disposed on the swing frame 33 and a horizontal telescopic member 331 disposed on the connecting plate 330, and the end of the telescopic member away from the connecting plate 330 is connected to the connecting plate 330. on the support plate 40. The horizontal telescopic member 331 adopts a hydraulic cylinder, and the connecting plate 330 is arranged on the swing frame 33 to form an integrated structure. With the connecting plate 330 as the fixed end, the expansion and contraction of the hydraulic cylinder generates a force on the support plate 40, and then the force acts on the swing The swing frame 33 is adjusted when the frame 33 is on, so as to realize the horizontal adjustment of the grouting gun barrel 5 located on the swing frame 33 .

The angle adjustment assembly is obliquely disposed on the support plate 40 on the frame 30 and the oblique telescopic element 321 connected to the support plate 40 , and the oblique telescopic element 321 is away from the end of the support plate 40 . The part is connected to the swing frame 33 , and there is an included angle between the oblique telescopic element 321 and the horizontal plane of the frame 30 . The oblique telescopic member 321 adopts a hydraulic oil cylinder, and adjusts the pitch angle of the grouting gun barrel 5 through the expansion and contraction of the hydraulic oil cylinder.

The push-pull assembly includes a hoop 50 disposed on the grouting barrel 5 and a push-pull member 51 connected to the hoop 50, and the end of the push-pull member 51 away from the hoop 50 is connected to the on the support plate 40. The hoop 50 is a connecting part connecting the grouting barrel and the support plate 40. The push-pull member 51 adopts a hydraulic cylinder, and the support plate 40 is used as the fixed end. sports.

In order to facilitate the cleaning of the grouting barrel, in the present invention, the grouting barrel 5 includes an upper pipe body 501 and a lower pipe body 502 that cooperate with each other and have a semicircular structure, and are arranged on the edge of the upper pipe body 501 and the lower pipe. The plate 503 on the edge of the body 502 and the locking bolts passing through the plate 503 are provided with a sealing member 504 between the plate 503 of the upper pipe body 501 and the plate 503 of the lower pipe body 502 . The grouting barrel is set as a split structure, which is convenient for disassembly, maintenance, replacement and cleaning.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection of the utility model.

Claims (10)

1. The tunnel secondary lining concrete longitudinal dispersion pouring device is characterized by comprising a walking trolley (1), a slurry conveying mechanism (2) connected with the walking trolley (1) and a longitudinal movement grouting mechanism arranged on the walking trolley (1);

the longitudinal movement grouting mechanism comprises a longitudinal movement trolley (3), a clamping adjusting component (4) positioned on the longitudinal movement trolley (3) and a grouting gun tube (5) connected to the clamping adjusting component (4), wherein the grouting gun tube (5) is connected with the grout conveying mechanism (2).

2. The tunnel secondary lining concrete longitudinal dispersion pouring device according to claim 1, wherein the longitudinal moving trolley (3) comprises a frame (30), a walking mechanism arranged on the frame (30), a lifting guide rail (31) vertically arranged at the peripheral corners of the frame (30), a lifting frame (32) connected to the lifting guide rail (31) in a matching manner, and a swing frame (33) hinged to the lifting frame (32), the clamping adjusting assembly (4) is arranged on the swing frame (33), the walking mechanism comprises a walking wheel arranged at the bottom end of the frame (30) and a driving motor arranged on the frame (30) and driving the walking wheel to move, and a longitudinal rail matched with the walking wheel is arranged on the walking trolley (1).

3. The tunnel secondary lining concrete longitudinal dispersion pouring device according to claim 2, characterized in that the clamping adjusting assembly (4) comprises a support plate (40) arranged on the swing frame (33), a clamping assembly arranged on the support plate (40), a horizontal adjusting member arranged between the support plate (40) and the swing frame (33), a lifting adjusting assembly vertically connected between the vehicle frame (30) and the lifting frame (32), and an angle adjusting assembly obliquely connected between the lifting frame (32) and the swing frame (33), wherein the grouting gun barrel (5) is positioned on the support plate (40) and penetrates through the clamping assembly, and a push-pull assembly parallel to the grouting gun barrel (5) is arranged between the grouting gun barrel (5) and the support plate (40).

4. The tunnel secondary lining concrete longitudinal dispersion pouring device according to claim 3, wherein the clamping assembly comprises two boxes (401) which are arranged on the supporting plate (40) at intervals, a rotating shaft (402) which is axially arranged in the boxes (401), and clamping wheels (403) which are arranged on the rotating shaft (402), the bottom end of the rotating shaft (402) is connected with a driving motor (404) which drives the rotating shaft (402) to rotate, a gap is arranged between the two boxes (401), and the grouting gun barrel (5) penetrates through the gap and is clamped between the two clamping wheels (403).

5. The tunnel secondary lining concrete longitudinal dispersion pouring device according to claim 3, characterized in that said horizontal adjustment means comprise a connecting plate (330) vertically arranged on said swing frame (33) and a horizontal telescopic means (331) arranged on said connecting plate (330), and the end of said horizontal telescopic means (331) remote from said connecting plate (330) is connected to said supporting plate (40).

6. The tunnel secondary lining concrete longitudinal dispersion pouring device according to claim 3, characterized in that the lifting adjustment assembly comprises a lifting member (301) arranged on the frame (30) and a fixing plate (302) arranged at the end of the lifting member (301) remote from the frame (30), and the fixing plate (302) is arranged on the swing frame (33).

7. The tunnel secondary lining concrete longitudinal dispersion pouring device according to claim 3, characterized in that the angle adjusting assembly is obliquely arranged on a sloping plate (320) on the frame (30) and a diagonal telescopic member (321) connected to the sloping plate (320), and the end of the diagonal telescopic member (321) far away from the supporting plate (40) is connected to the swing frame (33), and an included angle is formed between the diagonal telescopic member (321) and the horizontal plane of the frame (30).

8. The tunnel secondary lining concrete longitudinal dispersion pouring device according to claim 3, characterized in that the push-pull assembly comprises a hoop (50) arranged on the grouting gun barrel (5) and a push-pull piece (51) connected to the hoop (50), and the end of the push-pull piece (51) far away from the hoop (50) is connected to the supporting plate (40).

9. The tunnel secondary lining concrete longitudinal dispersion pouring device according to claim 8, characterized in that the grouting barrel (5) comprises an upper pipe body (501) and a lower pipe body (502) which are matched with each other and have a semicircular structure, a plate member (503) arranged at the edge of the upper pipe body (501) and the edge of the lower pipe body (502), and a locking bolt penetrating through the plate member (503), wherein a sealing member (504) is arranged between the plate member (503) of the upper pipe body (501) and the plate member (503) of the lower pipe body (502).

10. The tunnel secondary lining concrete longitudinal dispersion pouring device according to of any one of claims 1 to 9, wherein the grout delivery mechanism (2) comprises a ground pump articulated with the traveling trolley (1) and a connecting line connected to the ground pump, the end of the connecting line remote from the ground pump being connected to the grout gun barrel (5).

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