Rolling wet spraying machine

Abstract

The invention relates to the field of tunnel primary lining guniting construction, in particular to a rolling wet spraying machine. The device comprises a connecting arm, a guniting mechanism, a rolling mechanism, a direction adjusting assembly and an engineering chassis, the guniting mechanism comprises a wet spray head, a second swing oil cylinder driving the wet spray head to rotate, a bent pipe allowing the second swing oil cylinder to be installed, a first swing oil cylinder driving the bent pipe to rotate and a first connecting base arranged on the connecting arm and used for installing the first swing oil cylinder. The rolling mechanism comprises roller cloth and a driving assembly for driving the roller cloth to operate so as to roll the slurry sprayed by the wet spray head on the surface of the tunnel; the direction adjusting assembly is arranged on the connecting arm, and the output end is connected with the driving assembly; and a mechanical arm for adjusting the position of the connecting arm is arranged on the engineering chassis. The sprayed concrete slurry is rolled through the operation of the roller cloth, so that the construction flatness and the construction efficiency are guaranteed, and the slurry waste can be reduced.

Description

Technical Field

[0001] The invention relates to the field of tunnel primary lining shotcrete construction, in particular to a roller wet shotcrete machine. Background Art

[0002] In the current tunnel primary lining shotcrete construction process, the flatness of the initial support surface has a very important impact on the quality and safety of the tunnel project. The current common construction method is: first spray a large amount of concrete, and then use a scraper mounted on a wet spray head to scrape off excess concrete to make the initial support surface reach the required flatness.

[0003] However, the existing construction method has the following problems:

[0004] 1. The scraper is controlled by a remote control. This method requires high skills of the wet spraying machine operator. Scraping too much or too little will affect the flatness of the initial support surface;

[0005] 2. The scraper needs to be manually mounted on the wet spray head after the wet spray machine has finished spraying the quick-setting concrete. If the scraper is mounted for too long, and the concrete solidifies during this period, the subsequent use of the scraper will be easily obstructed, and the work efficiency will be low;

[0006] 3. The concrete splashed during spraying cannot be reused, and the loss rate and rebound rate are high, resulting in a huge waste of resources. Summary of the invention

[0007] The invention aims to solve the problems existing in the background technology and proposes a roller wet spraying machine which rolls the sprayed concrete slurry by running a roller cloth to ensure construction flatness and construction efficiency and reduce slurry waste.

[0008] The technical solution of the present invention is a roller wet spraying machine, which includes a connecting arm, a spraying mechanism, a roller pressing mechanism, an azimuth adjustment component and an engineering chassis; the spraying mechanism includes a wet spray head, a second swinging cylinder for driving the wet spray head to rotate, a bend for mounting the second swinging cylinder, a first swinging cylinder for driving the bend to rotate, and a first connecting seat arranged on the connecting arm and used to mount the first swinging cylinder; the roller pressing mechanism includes a roller cloth and a driving component that drives the roller cloth to operate so as to roll the slurry sprayed from the wet spray head onto the tunnel surface; the azimuth adjustment component is arranged on the connecting arm, and the output end is connected to the driving component; a mechanical arm for adjusting the position of the connecting arm is arranged on the engineering chassis.

[0009] Preferably, the driving assembly includes a bracket, a side plate arranged on the bracket, a tensioning roller assembly rotatably arranged on the side plate to tighten the roller cloth in a V shape, and a power device arranged on the side plate and driving the tensioning roller assembly to operate.

[0010] Preferably, the tensioning roller assembly includes an active roller rotatably arranged on the side plate, a tensioning roller, a driven roller, a tensioning assembly for tensioning the driven roller on the inner side of the roller cloth, and a plurality of transmission rollers. The active roller and the driven roller are distributed at both ends of the inner side of the roller cloth, the tensioning roller is tensioned on the outer side of the roller cloth, and the transmission roller is tensioned on the inner side of the roller cloth.

[0011] Preferably, the tightening assembly includes a U-shaped guide rail arranged on the side plate, a slider slidably arranged on the guide rail, and a bolt rotatably arranged on the guide rail and threadedly connected to the slider, and the driven roller is rotatably arranged on the slider.

[0012] Preferably, the azimuth adjustment assembly includes a second connecting seat arranged on the connecting arm and a third swing cylinder arranged on the second connecting seat and used for driving the bracket to rotate.

[0013] Preferably, the side plate is provided with a scanner for detecting the thickness and flatness of the slurry roller coating, a sensor for transmitting the scanner detection data, and a controller which is communicatively connected with the sensor and control-connected with the power device.

[0014] Preferably, a film reel is rotatably arranged on the bracket, a film is wound on the film reel, and the film unwound from the film reel is pressed by a cloth roller onto the slurry sprayed onto the tunnel surface by the wet nozzle.

[0015] Preferably, a film guiding plate is provided on the bracket, and the film guiding plate has a film guiding channel for the film to pass through.

[0016] Preferably, the robotic arm includes a support base arranged on an engineering chassis, a rotating shaft rotatably arranged on the support base, a rotating drive device arranged on the engineering chassis and driving the rotating shaft to rotate, a counterweight cylinder arranged at the end of the rotating shaft, a counterweight block arranged at the outer end of the counterweight cylinder, a first support plate and a second support plate arranged on the rotating shaft, a large arm rotatably arranged on the second support plate, a cylinder mounting base arranged on the large arm, a first lifting cylinder rotatably connected to the first support plate and the cylinder mounting base at both ends, a small arm rotatably arranged at the outer end of the large arm, a small arm tensioning plate rotatably arranged on the small arm, a second lifting cylinder rotatably connected to the large arm and the small arm tensioning plate at both ends, a telescopic arm rotatably arranged at the outer end of the small arm, and an adjustment cylinder rotatably connected to the small arm and the telescopic arm at both ends, and a connecting arm is arranged at the outer end of the telescopic arm.

[0017] Preferably, the construction method of the above roller spraying machine comprises the following steps:

[0018] S1, adjusting the rolling mechanism to the target rolling position through the mechanical arm, and adjusting the orientation of the roller cloth through the orientation adjustment component;

[0019] S2, adjusting the position of the wet sprinkler head by means of the first swing cylinder and the second swing cylinder;

[0020] S3, controlling the connecting arm to move, and spraying concrete slurry onto the tunnel surface through the wet nozzle, and using the roller cloth in the roller pressing mechanism to roll the concrete slurry;

[0021] S4. Use a scanner to detect the thickness and flatness of the roller-pressed concrete slurry, and transmit the detection data to the controller through the sensor. When the thickness and flatness of the concrete slurry reach the target thickness and flatness, reduce the moving speed of the connecting arm and the running speed of the roller cloth.

[0022] Compared with the prior art, the present invention has the following beneficial technical effects:

[0023] The present invention rolls the sprayed concrete slurry through the operation of the roller cloth, thereby ensuring construction flatness, high construction efficiency, low concrete rebound rate, relatively lower requirements on the professional level of operators, reducing slurry waste and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of roller-coated concrete according to an embodiment of the present invention;

[0025] Figure 2 It is a schematic diagram of the local structure of roller-coated concrete according to an embodiment of the present invention;

[0026] Figure 3 The diagram is a distribution diagram of the active roller, the driven roller, the transmission roller, the tension roller and the film reel;

[0027] Figure 4 It is a partial structural diagram of the tensioning principle of the driven roller;

[0028] Figure 5 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0029] Figure numerals: 1, wet spray head; 2, second swing oil cylinder; 3, elbow; 4, first swing oil cylinder; 5, first connecting seat; 6, connecting arm; 7, second connecting seat; 8, third swing oil cylinder; 9, bracket; 10, active roller; 11, driven roller; 12, transmission roller; 13, tensioning roller; 14, side plate; 15, guide rail; 16, slider; 17, bolt; 18, film reel; 181, film; 19, film guide plate; 20, scanner; 21, Sensor; 22. Roller cloth; 23. Engineering chassis; 24. Support seat; 25. Rotating shaft; 26. Fixed platform; 27. Counterweight tie plate; 28. Counterweight cylinder; 29. ​​Counterweight block; 30. First support plate; 31. Second support plate; 32. First lifting cylinder; 33. Cylinder mounting seat; 34. Upper arm tie plate; 35. Upper arm; 36. Forearm; 37. Forearm tie plate; 38. Second lifting cylinder; 39. Telescopic arm; 40. Adjustment cylinder. DETAILED DESCRIPTION

[0030] Embodiment 1

[0031] like Figure 1-Figure 5 As shown, the roller wet spraying machine proposed in this embodiment includes a connecting arm 6, a spraying mechanism, a roller mechanism, an azimuth adjustment component and an engineering chassis 23.

[0032] The spraying mechanism includes a wet spray head 1, a second swing oil cylinder 2 driving the wet spray head 1 to rotate, a curved pipe 3 for mounting the second swing oil cylinder 2, a first swing oil cylinder 4 driving the curved pipe 3 to rotate, and a first connecting seat 5 arranged on a connecting arm 6 and used to mount the first swing oil cylinder 4. The angle of the curved pipe 3 is between 90° and 135°. The wet spray head 1 is a hydraulic concrete wet spray head that can spray quick-setting concrete slurry. The position of the wet spray head 1 is adjusted by the first swing oil cylinder 4 and the second swing oil cylinder 2, and the wet spray head 1 is used to spray concrete slurry to the inner wall of the tunnel at the target position.

[0033] The rolling mechanism includes a roller cloth 22 and a driving assembly that drives the roller cloth 22 to roll the slurry sprayed from the wet nozzle 1 onto the tunnel surface. The driving assembly includes a bracket 9, a side plate 14 arranged on the bracket 9, a tensioning roller assembly that is rotatably arranged on the side plate 14 to tighten the roller cloth 22 in a V shape, and a power device that is arranged on the side plate 14 and drives the tensioning roller assembly to operate. The power device can be a hydraulic motor, a pneumatic motor or an electric motor. The power device drives the tensioning roller assembly to drive the roller cloth 22 to operate, and the roller cloth 22 rolls and flattens the concrete slurry sprayed from the wet nozzle 1.

[0034] like Figure 2-Figure 4 As shown, the tension roller assembly includes an active roller 10 rotatably arranged on a side plate 14, a tension roller 13, a driven roller 11, a tensioning assembly for tightening the driven roller 11 on the inner side of a roller cloth 22, and a plurality of transmission rollers 12. The roller cloth 22 is sleeved on the active roller 10, the driven roller 11 and the transmission roller 12, and is pressed from the outside by the tension roller 13. The active roller 10 and the driven roller 11 are distributed at both ends of the inner side of the roller cloth 22, the tension roller 13 is tightened on the outer side of the roller cloth 22, and the transmission roller 12 is tightened on the inner side of the roller cloth 22, so that the roller cloth 22 can be tightened into a V shape, and the operation of the roller cloth 22 is realized by using multiple rollers.

[0035] like Figure 4As shown, the tensioning assembly includes a U-shaped guide rail 15 arranged on the side plate 14, a slider 16 slidably arranged on the guide rail 15, and a bolt 17 rotatably arranged on the guide rail 15 and threadedly connected to the slider 16, and the driven roller 11 is rotatably arranged on the slider 16. The tension of the roller cloth 22 can be adjusted by adjusting the bolt 17. When the bolt 17 is rotated, the bolt 17 drives the slider 16 to move, and the slider 16 drives the driven roller 11 to move, thereby adjusting the distance between the active roller 10 and the driven roller 11, and then adjusting the tension of the roller cloth 22. When the roller cloth 22 is initially installed, the distance between the driven roller 11 and the active roller 10 is adjusted to be small to facilitate the installation of the roller cloth 22, and then the roller cloth 22 is tightened.

[0036] like Figure 1 As shown, the azimuth adjustment component is arranged on the connecting arm 6, and the output end is connected to the driving component. The azimuth adjustment component specifically includes a second connecting seat 7 arranged on the connecting arm 6 and a third swing oil cylinder 8 arranged on the second connecting seat 7 and used to drive the bracket 9 to rotate. The third swing oil cylinder 8 is used to drive the bracket 9 to rotate to adjust the azimuth of the roller pressing mechanism, that is, to adjust the azimuth of the roller pressed concrete slurry.

[0037] like Figure 2 As shown, a scanner 20 for detecting the thickness and flatness of the slurry roller coating, a sensor 21 for transmitting the detection data of the scanner 20, and a controller connected to the sensor 21 and connected to the power device control are arranged on the side plate 14. The scanner 20 can detect the thickness and flatness of the slurry roller coating, and transmit the data to the controller connected to the communication through the sensor 21. The controller can control the rotation speed of the power device, thereby controlling the moving speed of the roller cloth 22. When the thickness and flatness of the slurry roller coating reaches the target thickness and flatness, the entire roller wet spraying machine starts to move slowly, reducing the operating speed to prevent affecting the thickness and flatness of the slurry that has been rolled.

[0038] The engineering chassis 23 is provided with a mechanical arm for adjusting the position of the connecting arm 6. The engineering chassis 23 includes but is not limited to a wheeled chassis or a crawler chassis. The mechanical arm includes a support base 24 arranged on an engineering chassis 23, a rotating shaft 25 rotatably arranged on the support base 24, a rotating drive device arranged on the engineering chassis 23 and driving the rotating shaft 25 to rotate, a counterweight cylinder 28 arranged at the end of the rotating shaft 25, a counterweight block 29 arranged at the outer end of the counterweight cylinder 28, a first supporting plate 30 and a second supporting plate 31 arranged on the rotating shaft 25, a large arm 35 rotatably arranged on the second supporting plate 31, a cylinder mounting seat 33 arranged on the large arm 35, a first lifting cylinder 32 rotatably connected to the first supporting plate 30 and the cylinder mounting seat 33 at both ends, a small arm 36 rotatably arranged at the outer end of the large arm 35, a small arm tensioning plate 37 rotatably arranged on the small arm 36, a second lifting cylinder 38 rotatably connected to the large arm 35 and the small arm tensioning plate 37 at both ends, a telescopic arm 39 rotatably arranged at the outer end of the small arm 36, and an adjusting cylinder 40 rotatably connected to the small arm 36 and the telescopic arm 39 at both ends. The height and orientation of the spraying mechanism and the roller pressing mechanism are adjusted by telescoping the first lifting cylinder 32, the second lifting cylinder 38 and the adjusting cylinder 40. A fixed platform 26 is provided on the rotary shaft 25, and a counterweight tie plate 27 is connected between the fixed platform 26 and the counterweight cylinder 28. A large arm tie plate 34 rotatably connected to the second support plate 31 is provided on the large arm 35. The structural stability is improved by the tie plate. The connecting arm 6 is provided at the outer end of the telescopic arm 39, and the spraying mechanism and the roller pressing mechanism are adjusted by adjusting the connecting arm 6.

[0039] The telescopic arm 39 includes a sliding cylinder, a telescopic cylinder and a telescopic cylinder. The telescopic cylinder is arranged in the sliding cylinder to drive the telescopic cylinder to slide on the sliding cylinder to adjust the length of the telescopic arm 39. The sliding cylinder is rotatably arranged on the small arm 36, and the telescopic cylinder is connected to the connecting arm 6.

[0040] The rotary drive device can use a hydraulic motor to drive the rotary shaft 25 to rotate and adjust the rotation of the entire mechanical arm, the spraying mechanism and the roller pressing mechanism. When the entire mechanical arm is in a tilted state, the counterweight cylinder 28 extends outward to push the counterweight block 29 forward, increase the distance between the counterweight block 29 and the rotary shaft 25, and use the lever principle to increase the torque of the rotary drive device.

[0041] The construction method of the above-mentioned roller wet spraying machine comprises the following steps:

[0042] S1, the rolling mechanism is moved to the target rolling position by the mechanical arm, the connecting arm 6 is installed at the outermost end of the mechanical arm, and the orientation of the roller cloth 22 is adjusted by the orientation adjustment component;

[0043] S2, adjusting the position of the wet sprinkler head 1 by the first swing cylinder 4 and the second swing cylinder 2;

[0044] S3, spraying concrete slurry onto the tunnel surface through the wet nozzle 1, using the roller cloth 22 in the rolling mechanism to roll the concrete slurry, the slurry can be rolled flat without wasting the slurry, the rotary drive device drives the rotary shaft 25 to rotate, the big arm 35, the small arm 36 and the telescopic arm 39 to rotate, the connecting arm 6, the spraying mechanism and the rolling mechanism all rotate around the rotary shaft 25, and the spraying and rolling construction are performed on the curved inner wall of the tunnel;

[0045] S4. Detect the thickness and flatness of the roller-pressed concrete slurry using the scanner 20, transmit the detection data to the controller through the sensor 21, and when the thickness and flatness of the concrete slurry reach the target thickness and flatness, reduce the moving speed of the connecting arm 6 and the operating speed of the roller cloth 22.

[0046] In this embodiment, the sprayed concrete slurry is rolled by the operation of the roller cloth 22, thereby ensuring the construction flatness and construction efficiency, and the requirements on the professional level of the operator are relatively low. In addition, during wet spraying, because there is no need to scrape off excess concrete slurry, slurry waste can be reduced and costs can be saved. The concrete slurry is rolled by the rolling mechanism, and the construction efficiency is high and the concrete rebound rate is low.

[0047] Embodiment 2

[0048] like Figure 1-Figure 5 As shown, the roller wet spraying machine proposed in this embodiment is compared with the first embodiment. In this embodiment, a film reel 18 is rotatably arranged on the bracket 9, and a film 181 is wound on the film reel 18. The film 181 unwound from the film reel 18 is rolled by the roller cloth 22 onto the slurry sprayed onto the tunnel surface by the wet spray head 1. When in use, the free end of the film 181 is placed on the roller cloth 22, and the roller cloth 22 presses the film 181 onto the slurry. When the roller cloth 22 is running, it can drive the film reel 18 to rotate, pull out the film 181 on the film reel 18, and roll the slurry across the film 181. The film 181 is attached to the solidified slurry for protection. At the same time, the film 181 separates the roller cloth 22 from the slurry, and can also protect the roller cloth 22, reduce the wear of the roller cloth 22, and extend the service life of the roller cloth 22.

[0049] Furthermore, a film guide plate 19 is provided on the bracket 9 , and the film guide plate 19 has a film guide channel for the film 181 to pass through, so as to guide the unwinding process of the film 181 .

[0050] In this embodiment, the unwinding film 181 is used to protect the slurry from adhesion and the roller cloth 22 from wear. After the construction is completed, the film 181 is removed.

[0051] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. Roller wet spraying machine, characterized in that: include: Connecting arm (6); A spraying mechanism, comprising a wet spray head (1), a second swing oil cylinder (2) for driving the wet spray head (1) to rotate, a curved pipe (3) for mounting the second swing oil cylinder (2), a first swing oil cylinder (4) for driving the curved pipe (3) to rotate, and a first connecting seat (5) arranged on a connecting arm (6) and used for mounting the first swing oil cylinder (4); A rolling mechanism, comprising a roller cloth (22) and a driving assembly for driving the roller cloth (22) to operate so as to roll the slurry sprayed by the wet spray head (1) onto the tunnel surface; An orientation adjustment component is arranged on the connecting arm (6), and an output end of the component is connected to the driving component; The engineering chassis (23) is provided with a mechanical arm for adjusting the position of the connecting arm (6).

2. The roller wet spraying machine according to claim 1, characterized in that: The driving assembly comprises a bracket (9), a side plate (14) arranged on the bracket (9), a tensioning roller assembly rotatably arranged on the side plate (14) to tighten the roller cloth (22) in a V-shape, and a power device arranged on the side plate (14) and driving the tensioning roller assembly to operate.

3. The roller wet spraying machine according to claim 2, characterized in that: The tensioning roller assembly comprises an active roller (10) rotatably arranged on a side plate (14), a tensioning roller (13), a driven roller (11), a tensioning assembly for tensioning the driven roller (11) on the inner side of a roller cloth (22), and a plurality of transmission rollers (12); the active roller (10) and the driven roller (11) are distributed at both ends of the inner side of the roller cloth (22); the tensioning roller (13) is tensioned on the outer side of the roller cloth (22); and the transmission roller (12) is tensioned on the inner side of the roller cloth (22).

4. The roller wet spraying machine according to claim 3, characterized in that: The tightening assembly comprises a U-shaped guide rail (15) arranged on the side plate (14), a slider (16) slidably arranged on the guide rail (15), and a bolt (17) rotatably arranged on the guide rail (15) and threadedly connected to the slider (16); the driven roller (11) is rotatably arranged on the slider (16).

5. The roller wet spraying machine according to claim 2, characterized in that: The azimuth adjustment component comprises a second connection seat (7) arranged on the connection arm (6) and a third swing cylinder (8) arranged on the second connection seat (7) and used for driving the bracket (9) to rotate.

6. The roller wet spraying machine according to claim 2, characterized in that: The side plate (14) is provided with a scanner (20) for detecting the thickness and flatness of the slurry roller coating, a sensor (21) for transmitting the detection data of the scanner (20), and a controller which is communicatively connected with the sensor (21) and control-connected with the power device.

7. The roller wet spraying machine according to claim 2, characterized in that: A film reel (18) is rotatably arranged on the support (9), a film (181) is wound on the film reel (18), and the film (181) unwound from the film reel (18) is rolled by a roller cloth (22) onto the slurry sprayed onto the tunnel surface by the wet spray head (1).

8. The roller wet spraying machine according to claim 7, characterized in that: A film guide plate (19) is arranged on the support (9), and the film guide plate (19) has a film guide channel for the film (181) to pass through.

9. The roller spraying machine according to claim 1, characterized in that: The mechanical arm comprises a support seat (24) arranged on an engineering chassis (23), a rotary shaft (25) rotatably arranged on the support seat (24), a rotary drive device arranged on the engineering chassis (23) and driving the rotary shaft (25) to rotate, a counterweight cylinder (28) arranged at the end of the rotary shaft (25), a counterweight block (29) arranged at the outer end of the counterweight cylinder (28), a first support plate (30) and a second support plate (31) arranged on the rotary shaft (25), a large arm (35) rotatably arranged on the second support plate (31), and a cylinder mounting seat (33) arranged on the large arm (35). ), a first lifting cylinder (32) whose two ends are rotatably connected to the first support plate (30) and the cylinder mounting seat (33), a small arm (36) rotatably arranged at the outer end of the big arm (35), a small arm tensioning plate (37) rotatably arranged on the small arm (36), a second lifting cylinder (38) whose two ends are rotatably connected to the big arm (35) and the small arm tensioning plate (37), a telescopic arm (39) rotatably arranged at the outer end of the small arm (36), and an adjusting cylinder (40) whose two ends are rotatably connected to the small arm (36) and the telescopic arm (39), respectively, and a connecting arm (6) is arranged at the outer end of the telescopic arm (39).

10. The roller wet spraying machine according to claim 6, characterized in that: The construction method includes the following steps: S1, adjusting the rolling mechanism to a target rolling position by means of a mechanical arm, and adjusting the orientation of the roller cloth (22) by means of an orientation adjustment component; S2, adjusting the position of the wet spray head (1) by means of the first swing oil cylinder (4) and the second swing oil cylinder (2); S3, controlling the connection arm (6) to move, and at the same time spraying concrete slurry onto the tunnel surface through the wet nozzle (1), and rolling the concrete slurry using the roller cloth (22) in the rolling mechanism; S4, using a scanner (20) to detect the thickness and flatness of the roller-pressed concrete slurry, transmitting the detection data to the controller through a sensor (21), and when the thickness and flatness of the concrete slurry reach the target thickness and flatness, reducing the moving speed of the connecting arm (6) and the operating speed of the roller cloth (22).

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