Concrete stirring and spraying device for tunnel construction and using method thereof

Abstract

The invention belongs to the technical field of tunnel engineering, and discloses a concrete mixing and spraying device for tunnel construction and a using method of the concrete mixing and spraying device for tunnel construction. The stirring rod part is positioned in the middle of the stirring tank; the scissor lift part is mounted above the stirring rod part; the circumferential surface displacement part is mounted above the scissor lift part and comprises a rail groove rotating disc and a screw rod sliding rail; the concrete spraying pipe grabbing height and angle adjusting part is mounted on a bearing block of the lead screw sliding rail and comprises a rotary arm, a first telescopic mechanism and a concrete spraying pipe grabbing clamp which are sequentially connected from bottom to top; the concrete nozzle grabbing part is installed above the first telescopic mechanism and used for adjusting the angle of a concrete nozzle so as to be aligned with the tunnel slope to conduct concrete spraying. The problems that in tunnel construction, the concrete spraying precision is not high, the concrete stirring efficiency is low, the requirement for labor force of construction operation is large, and the flexibility is low can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel engineering, and in particular to a concrete mixing and spraying device for tunnel construction, and also to a method for using the concrete mixing and spraying device for tunnel construction. Background Art

[0002] During the construction of tunnel projects, it is often necessary to mix and spray concrete on the top of the tunnel slope. The current main treatment method is to mix with a traditional mixer, which has low concrete mixing efficiency. Then, the spraying operation is carried out by manually lifting the spraying pipe to aim at the top of the tunnel slope to be sprayed. This construction mode is time-consuming, labor-intensive, and has high labor costs, and the spraying accuracy is not high.

[0003] At the same time, the concrete spraying trucks used on the market are large in size, difficult to carry out construction in narrow tunnels, and have low flexibility. Summary of the invention

[0004] Based on the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a concrete mixing and spraying device for tunnel construction and a method of using the same, so as to solve the problems of low concrete spraying accuracy, low concrete mixing efficiency, large labor demand and low flexibility in construction work during tunnel construction.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical measures:

[0006] The concrete mixing and spraying device for tunnel construction of the present invention comprises: a mixing tank part, which comprises a mixing tank, three raw material tanks installed on the annular wall of the mixing tank, and an adjustable discharge port fixed at the outlet of the raw material tank; a stirring rod part, which is located in the middle of the mixing tank and is used to achieve uniform mixing of concrete in the mixing tank; a scissor lift part, which is installed above the stirring rod part; a circumferential surface displacement part, which is installed above the scissor lift part, and comprises a rotating disc with a rail groove, and a screw rod slide driven by a motor to make a circular motion at the center of the rotating disc with a rail groove; a concrete nozzle grabbing height angle adjustment part, which is installed on the bearing block of the screw rod slide, and comprises a slewing arm, a first telescopic mechanism and a concrete nozzle grabbing clamp connected in sequence from bottom to top; a concrete nozzle grabbing part, which is installed above the first telescopic mechanism and is used to adjust the angle of the concrete nozzle to aim at the tunnel slope for concrete spraying.

[0007] Furthermore, the main body of the stirring rod part is composed of a driving motor, a main shaft, an eccentric circular hole shaft, a secondary shaft, a first ring column, a first spherical surface, a pinion, a second spherical surface, a second ring column, a third shaft and a stirring hand from top to bottom; the driving motor is connected with the main shaft and drives the main shaft to rotate, the eccentric circular hole shaft is welded below the main shaft, and when the main shaft rotates along its vertical axis, it drives the eccentric circular hole shaft to rotate around the axis of the main shaft at a certain inclination angle; the eccentric circular hole shaft is installed with a secondary shaft downward along its axis, the secondary shaft passes through the first spherical surface, and the hemispherical diameter of the first spherical surface is larger than the diameter of the circular hole of the first ring column. The diameter of the secondary shaft follows the rotation of the eccentric circular hole shaft, and the first spherical surface swings in contact with the circumference under the circumference of the circular hole of the first ring column; a pinion is fixed below the circular plane of the first spherical surface, and the pinion drives the second spherical surface, the third shaft and the stirring hand below it to rotate together; wherein, the third shaft passes through the second spherical surface, and the hemispherical diameter of the second spherical surface is larger than the diameter of the circular hole of the second ring column, so that the third shaft follows the rotation of the pinion gear, and the second spherical surface swings in contact with the circumference under the circumference of the circular hole of the second ring column, and the rotation of the third shaft drives the stirring hand welded below it to rotate, thereby performing the mixing operation of concrete.

[0008] Furthermore, the bottom of the main shaft cooperates with the first gear through a belt, and the first gear is connected to the large gear through a cylindrical rod welded below, and the two rotate synchronously, and the large gear is meshed with the small gear. When the main shaft drives the first gear to rotate through the belt, the large gear rotates accordingly. At the same time, the rotation of the large gear drives the small gear to rotate, and then drives the second spherical surface, the third shaft and the stirring hand below the small gear to rotate together.

[0009] Furthermore, the bottom surface of the rail groove rotating disk is a circular chassis, and the circumference above the circular chassis is a circle of circular grooves. The motor is installed in the central part of the rail groove rotating disk, and a plate surface extends radially outward from the top. A screw slide is fixed on the plate surface by nuts and bolts, and the motor drives the plate surface to perform circular motion; a supporting foot extends downward from one end of the plate surface, and the supporting foot is embedded in the groove of the rail groove rotating disk, so that the screw slide rail has a strong balancing support below when it rotates around the center circle.

[0010] Furthermore, the swivel arm is installed on the load-bearing block of the screw slide rail in the circumferential surface displacement part, and the swivel arm is used to perform swivel motion to drive the concrete nozzle grabbing part above the concrete nozzle grabbing height angle adjustment part to perform a large angle rotation. The upper part of the swivel arm is concentrically connected to the first telescopic mechanism, which can achieve the height change of the upper concrete nozzle grabbing part through telescopic changes. The side of the first telescopic mechanism is fixed with a concrete nozzle grabbing clamp by nuts and bolts. The concrete nozzle is grabbed by the concrete nozzle grabbing clamp, thereby reducing the bearing capacity of the concrete nozzle grabbing clamp in the concrete nozzle grabbing part.

[0011] Furthermore, the concrete nozzle grabbing part is sequentially installed with a fixed base, a lower protrusion, a lower support platform with a hollow notch, a small support bar, a small hydraulic cylinder, a small cylindrical cross bar, a large cylindrical cross bar, an upper support platform, a second telescopic mechanism, a concrete nozzle grabbing clamp and a distance sensor from bottom to top. The fixed base is fixed above the first telescopic mechanism in the concrete nozzle grabbing height angle adjustment part by nuts and bolts; the fixed base is connected to the lower support platform with a hollow notch through four rectangular columns, and the lower support platform with a hollow notch The hollow notch provides a gap for the small hydraulic cylinder to pass through, one end of the lower support platform with the hollow notch extends downwardly to a lower convex block, and the upper and lower ends of the two groups of angle-changing parts cross-connected by two small support bars are respectively connected to the upper support platform and the lower support platform with the hollow notch; the two surfaces of the lower convex block are welded by small cylindrical cross bars, the round hole under the small hydraulic cylinder passes through the small cylindrical cross bar, and the middle position of a small support bar on the inner side of one side is welded to the middle position of the small support bar on the inner side of the other side through a large cylindrical cross bar. At the same time, the small hydraulic cylinder The circular hole connected to the upper protruding part passes through the large cylindrical horizontal bar; when the small hydraulic cylinder is retracted, the large cylindrical horizontal bar moves in the direction close to the small cylindrical horizontal bar, and because it connects two small support bars, it is restricted by the position, thereby driving the small support bar and the upper support platform to rotate counterclockwise; at the same time, the small support bar rotates counterclockwise, and the upper support platform tends to a vertical state from a horizontal state in the middle position; when the small hydraulic cylinder is extended, the large cylindrical horizontal bar moves in the direction away from the small cylindrical horizontal bar, and because it connects two small support bars, it is restricted by the position, thereby driving the small support bar and the upper support platform to rotate clockwise; at the same time, the small support bar rotates clockwise, and the upper support platform tends to a horizontal state in the middle position from a vertical state, thereby further realizing the change of the angle of the concrete nozzle grabbing clamp; the upper part of the support platform is fixedly connected to the second telescopic mechanism, the second telescopic mechanism is used to control the distance between the concrete nozzle grabbing clamp and the tunnel slope, the upper part of the second telescopic mechanism is connected to the concrete nozzle grabbing clamp by nuts and bolts, the concrete nozzle grabbing clamp grabs the concrete nozzle, and sprays concrete at the tunnel slope.

[0012] Furthermore, a driver, two transition cylinders, five opening and closing blades and a group of long belts are installed on the adjustable discharge port. A battery for driving the long belt to rotate is installed in the driver. The two transition cylinders are respectively installed on both sides of the driver. The five opening and closing blades are fixed on the bottom disk of the adjustable discharge port at equal intervals. There is a small distance between every two opening and closing blades to facilitate their respective opening and closing rotational movements. The long belt respectively passes around the outer arc surface of the driver, the inner arc surface of the two transition cylinders, and the outer arc surface of the five opening and closing blades; when the driver rotates clockwise, it drives the long belt to rotate clockwise, thereby driving the five opening and closing blades to converge to the center of the bottom disk of the adjustable discharge port, thereby shrinking or closing the discharge port; when the driver rotates counterclockwise, it drives the long belt to transmit counterclockwise, thereby driving the five opening and closing blades to spread out to the circumference of the bottom disk of the adjustable discharge port, thereby expanding or opening the discharge port.

[0013] Preferably, the scissor-type lift part is composed of a load-bearing platform, a large hydraulic cylinder and a large support bar from top to bottom. The two sides of the load-bearing platform are respectively connected to the lifting part where two groups of large support bars cross. The upper horizontal bar and the lower horizontal bar between the two large support bars are connected by a large hydraulic cylinder. The extension and contraction of the large hydraulic cylinder drives the angle change of the crossed large support bars, thereby driving the up and down height change of the scissor-type lift part.

[0014] Furthermore, a distance sensor is installed on one side of the second telescopic mechanism.

[0015] Accordingly, the present invention also provides a method for using a concrete mixing and spraying device for tunnel construction, the steps of which are:

[0016] S1. Place the device in the tunnel, and load the required concrete raw materials into the three raw material tanks of the mixing tank. At the same time, adjust the opening size of the adjustable discharge port according to the actual situation and specific needs, and then adjust the mix ratio of each raw material;

[0017] S2, then start the driving motor of the stirring rod part to start the stirring operation. When the concrete state is suitable, open the concrete outlet, connect the pump below through the pipeline, connect the pump outlet to the concrete injection pipeline, clamp the pipe wall of the concrete injection pipeline with the concrete nozzle grabbing clamp, and clamp the concrete nozzle with the concrete nozzle grabbing clamp to aim at the tunnel slope surface;

[0018] S3. Then, according to the change of the injection position, the movement state of each height, displacement and angle adjustment mechanism in the scissor lift part, the circumferential surface displacement part, the concrete nozzle grabbing height angle adjustment part and the concrete nozzle grabbing part is timely controlled;

[0019] S4. Use the distance sensor to monitor in real time and accurately control the concrete spraying distance. This completes the use.

[0020] From the above, the beneficial effects of the concrete mixing and spraying device for tunnel construction and the use method thereof of the present invention are as follows:

[0021] 1. The present invention can extend the length of the gripping mechanism, so as to flexibly respond to the concrete spraying requirements of different tunnel slope top heights. At the same time, the device adopts a variety of steering structures to realize construction at various angles. In addition, a variety of displacement structures realize spraying concrete operations in different directions. In addition, the device is equipped with a mixing mechanism, which cooperates with the spraying mechanism to provide concrete materials in a timely manner. The mixing part adopts dual-axis steering, which has higher mixing efficiency and saves construction time and cost. In addition, the device is equipped with a distance sensor, which controls the lifting and lowering of the spraying gripping mechanism through intelligent algorithms and remote operation modules, so as to accurately adjust its distance from the tunnel slope top and realize intelligent construction.

[0022] 2. High concrete mixing efficiency. The concrete is fully mixed through multi-axis rotation to improve efficiency and concrete quality. The stirring rod part is driven by the motor to rotate the main shaft, and the main shaft drives the secondary shaft to rotate through the eccentric circular hole shaft. The secondary shaft and the machine body are connected by a spherical surface to facilitate swinging rotation, thereby realizing the movement of the secondary shaft rotating around the center line of the machine body. Then, the main shaft drives the first matching gear to rotate through a belt, and this matching gear rotates with the large gear below at the same time, thereby realizing the large gear driving the small gear on the secondary shaft to achieve matching movement, so that the stirring hand connected to the third shaft below the secondary shaft rotates along the central axis of the third shaft, and the central axis of the third shaft coincides with the central axis of the secondary shaft. Thus, through the multi-axis matching rotating mixing mechanism, uniform mixing of concrete is achieved.

[0023] 3. The adjustable discharge port is driven by a driver to open and close the five opening and closing blades through a belt, which is convenient for adjusting the discharge amount and ensuring the quality of concrete. It is convenient to adjust the mixing ratio of concrete raw materials. The diameter of the discharge port of different raw materials can be changed through the adjustable discharge port, thereby changing the discharge amount of each raw material per unit time, thereby changing the raw material mixing ratio according to different needs and improving the quality of concrete.

[0024] 4. The multi-level lifting mechanism, rotating mechanism and angle changing mechanism can conveniently and flexibly change the angle and position of the concrete nozzle, realize accurate spraying, and meet the spraying requirements of different spraying surfaces. Above the telescopic mechanism is the concrete nozzle grabbing mechanism, which drives the two cross-type support bars to change the cross angle through the telescopic hydraulic cylinder below, thereby driving the grabbing mechanism to change the angle in an arc-shaped trajectory. At the same time, the two cross-type support bars fix a small telescopic mechanism to accurately control the distance between the grabbing clamp and the top of the tunnel slope to be sprayed, ensuring the construction quality.

[0025] 5. The present invention can adjust the nozzle grabbing position at multiple angles and heights, and cooperate with the mixing mechanism for construction. The mixing mechanism provides concrete materials in a timely manner, and the intelligent control system is used to realize the intelligent construction of the device. The device is small in size and can be flexibly moved in the tunnel to ensure the feasibility of construction.

[0026] 6. Above the scissor lift is a circular displacement mechanism, which consists of a rotating disc and a screw rail. The screw rail is fixed on the support arm of the rotating disc. When the rotating disc changes the orientation of the concrete nozzle grabbing mechanism, the screw rail can drive the upper nozzle grabbing mechanism to move from the center of the rotating disc to the edge of the circumference, thereby expanding the range of movement. A swivel arm is installed above the circular displacement mechanism to achieve a large angle change of the nozzle grabbing mechanism. A telescopic mechanism is installed above it through a concentric shaft to further change the height of the nozzle grabbing mechanism. The control of the device replaces traditional manual operation to save labor costs, and sensors are used in conjunction with intelligent control systems to achieve intelligent construction. Above the mixing mechanism is a scissor lift to achieve the concrete nozzle grabbing height. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0028] Figure 1 It is a schematic diagram of the overall structure of the concrete mixing and spraying device for tunnel construction of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the stirring mechanism of the present invention;

[0030] Figure 3 It is a schematic structural diagram of the stirring tank part of the present invention;

[0031] Figure 4 It is a partial structural schematic diagram of the adjustable discharge port of the present invention;

[0032] Figure 5 It is a structural schematic diagram of the stirring rod part of the present invention;

[0033] Figure 6 is a schematic structural diagram of the scissor lift portion of the present invention;

[0034] Figure 7 It is a structural schematic diagram of the circumferential surface displacement part of the present invention;

[0035] Figure 8 It is a structural schematic diagram of the grabbing height angle adjustment part of the concrete spray pipe of the present invention;

[0036] Fig. 9It is one of the structural schematic diagrams of the concrete spout grabbing part of the present invention;

[0037] Fig.10 This is the second structural schematic diagram of the concrete spout grabbing part of the present invention.

[0038] In the figure: 100- stirring tank part:

[0039] 101-mixing tank; 102-raw material tank; 103-adjustable discharge port; 104-concrete discharge port;

[0040] 103-Adjustable discharge port:

[0041] 1031-driver; 1032-opening and closing blades; 1033-transition cylinder; 1034-long belt;

[0042] 200-Stirring rod part:

[0043] 201-driving motor; 202-main shaft; 203-first gear; 204-belt; 205-eccentric circular hole shaft; 206-secondary shaft; 207-first ring column; 208-first spherical surface; 209-large gear; 210-small gear; 211-second spherical surface; 212-second ring column; 213-third shaft; 214-stirring hand;

[0044] 300-Scissor Lift Section:

[0045] 301- load-bearing platform; 302- large hydraulic cylinder; 303- large support bar;

[0046] 400-Circumferential displacement part:

[0047] 401-screw guide rail; 402-motor; 403-rotating disc with rail groove;

[0048] 500-Concrete nozzle grab height angle adjustment part:

[0049] 501-first telescopic mechanism; 502-swivel arm; 503-concrete spray pipe grabbing clamp;

[0050] 600-Concrete nozzle grab part:

[0051] 601-fixed base; 602-lower convex block; 603-lower support platform with hollow notch; 604-small support bar; 605-small hydraulic cylinder; 606-small cylindrical horizontal bar; 607-large cylindrical horizontal bar; 608-upper support platform; 609-second telescopic mechanism; 610-concrete nozzle grabbing clamp; 611-distance sensor. DETAILED DESCRIPTION

[0052] Next, combine Figures 1 to 10The invention provides a concrete mixing and spraying device for tunnel construction and a method for using the device.

[0053] Depend on Figure 1 As shown, the concrete mixing and spraying device for tunnel construction of the present invention is composed of two major parts: a mixing mechanism and a concrete spraying position control mechanism. The mixing tank part 100 is located below the device. The tank edge of the mixing tank part 100 and the support column behind the stirring rod part 200 are welded to form the main part of the mixing mechanism. A pump is placed below the mixing tank part 100 to provide power for concrete spraying. The scissor lift part 300 is located above the mixing tank part 100 and the stirring rod part 200. The scissor lift part 300 is fixed to the plane outside the mixing mechanism by nuts and bolts. A circumferential surface displacement part 400 is installed above the scissor lift part 300. The circumferential surface displacement part 400 is composed of a screw guide rail 401 and a rotating disc 403 with a rail groove. A concrete nozzle gripping height angle adjustment part 500 is installed above the bearing block of the screw guide rail 401 in the circumferential surface displacement part 400, and a concrete nozzle gripping part 600 is fixed above the first telescopic mechanism 501 in the concrete nozzle gripping height angle adjustment part 500 by nuts and bolts. The mixing mechanism and the concrete spraying position control mechanism can operate simultaneously for coordinated construction.

[0054] Depend on Figure 2 and Figure 3 As shown, the mixing tank part 100 is composed of a mixing tank 101 in the form of a cylindrical groove as the main body of the mixing tank part 100, and a concrete outlet 104 is designed at the lower part thereof. The concrete outlet 104 connects the concrete mixed in the mixing tank 100 to the pump under the mixing tank part 100 through a pipeline, so that the concrete is pumped to a high place for spraying. Three raw material tanks 102 are installed on the annular wall of the mixing tank 101, and three adjustable outlets 103 are fixed at the outlets of the pipelines connected to the three raw material tanks 102, as shown in FIG. Figure 3 The opening size can be changed to control the flow rate of each raw material per unit time, thereby controlling the raw material ratio and improving the quality of concrete.

[0055] like Figure 4As shown, a driver 1031, two transition cylinders 1033, five opening and closing blades 1032 and a group of long belts 1034 are installed on the adjustable discharge port 103. A battery for driving the long belt 1034 to rotate is installed in the driver 1031. The two transition cylinders 1033 are respectively installed on both sides of the driver 1031. The five opening and closing blades 1032 are fixed on the bottom disk of the adjustable discharge port 103 at equal intervals. There is a small distance between every two opening and closing blades 1032 to facilitate their respective opening and closing rotational movements. The long belts 1034 respectively bypass the outer arc surface of the driver 1031, the inner arc surface of the two transition cylinders 1033, and the outer arc surface of the five opening and closing blades 1032. Therefore, when the driver 1031 rotates clockwise, the long belt 1034 rotates clockwise, thereby driving the five opening and closing blades 1032 to converge toward the center of the bottom disk of the adjustable discharge port 103, thereby reducing or closing the discharge port. When the driver 1031 rotates counterclockwise, the long belt 1034 transmits counterclockwise, thereby driving the five opening and closing blades 1032 to spread toward the circumference of the bottom disk of the adjustable discharge port 103, thereby expanding or opening the discharge port.

[0056] Depend on Figure 5 As shown, the stirring rod part 200 is located in the middle of the stirring tank 101, and its main parts are, from top to bottom, a driving motor 201, a main shaft 202, an eccentric circular hole shaft 205, a secondary shaft 206, a first ring column 207, a first spherical surface 208, a pinion 210, a second spherical surface 211, a second ring column 212, a third shaft 213 and a stirring hand 214. The driving motor 201 is connected with the main shaft 202, and the driving motor 201 drives the main shaft 202 to rotate. The eccentric circular hole shaft 205 is welded below the main shaft 202. When the main shaft 202 rotates along its vertical axis, the eccentric circular hole shaft 205 is driven to rotate around the axis of the main shaft 202 at a certain angle of inclination. The eccentric circular hole shaft 205 is installed with a secondary shaft 206 downward along its axis. The secondary shaft 206 passes through the first spherical surface 208. The hemispherical diameter of the first spherical surface 208 is slightly larger than the diameter of the circular hole of the first ring column 207. When the secondary shaft 206 rotates with the eccentric circular hole shaft 205, the first spherical surface 208 swings in contact with the circumference of the circular hole of the first ring column 207. A pinion 210 is fixed below the circular plane of the first spherical surface 208, and the pinion 210 drives the second spherical surface 211, the third shaft 213 and the stirring hand 214 below it to rotate together. Among them, the third shaft 213 passes through the second spherical surface 211, and the hemispherical diameter of the second spherical surface 211 is slightly larger than the diameter of the circular hole of the second ring column 212. When the third shaft 213 rotates with the pinion 210, the second spherical surface 211 swings in a contact circle under the circumference restriction of the circular hole of the second ring column 212. The rotation of the third shaft 213 drives the stirring hand 214 welded thereunder to rotate, thereby performing the mixing operation of concrete.

[0057] In the stirring rod part 200, the main shaft 202 cooperates with the first gear 203 through the belt 204 below. The first gear 203 is connected to the large gear 209 through the cylindrical rod welded below, and the two rotate synchronously. The large gear 209 is meshed with the small gear 210. When the main shaft 202 drives the first gear 203 to rotate through the belt 204, the large gear 209 rotates accordingly. At the same time, the rotation of the large gear 209 drives the small gear 210 to rotate, and then drives the second spherical surface 211, the third shaft 213 and the stirring hand 214 below the small gear 210 to rotate together. In addition, the circular swing of the first spherical surface 208 and the second spherical surface 211 makes the stirring rod part 200 swing and rotate as a whole, and the secondary shaft 206 and the third shaft 213 rotate respectively, realizing the multi-axis rotation of the stirring rod part 200, improving the efficiency and quality of concrete mixing.

[0058] Depend on Figure 6 As shown, the scissor lift part 300 is installed above the stirring rod part 200, which includes a load-bearing platform 301, a large hydraulic cylinder 302 and a large support bar 303 from top to bottom. The two sides of the load-bearing platform 301 are respectively connected to the lifting parts of the two groups of crossed large support bars 303. The upper horizontal bar and the lower horizontal bar between the two large support bars 303 are connected by the large hydraulic cylinder 302. The telescopic change of the large hydraulic cylinder 302 drives the angle change of the crossed large support bars 303, thereby driving the up and down height change of the scissor lift part 300.

[0059] Depend on Figure 7 As shown, the circumferential displacement part 400 is installed above the scissor lift part 300, and is mainly composed of a screw guide rail 401, a motor 402 and a track groove rotating disc 403. The bottom surface of the track groove rotating disc 403 is a circular chassis, and the circumference above the circular chassis is a circle of annular grooves. The motor 402 is installed in the central part of the track groove rotating disc 403, and a plate surface is extended radially outward from the top thereof. The screw guide rail 401 is fixed on the plate surface by nuts and bolts, and the motor 402 drives the plate surface to make a circular motion. A support foot extends downward from one end of the plate surface, and the support foot is embedded in the groove of the track groove rotating disc 403, so that the screw guide rail 401 has a strong balance support below when rotating around the center of the circle, so as to prevent the plate surface from breaking due to excessive length and excessive load. The load-bearing block on the screw rail 401 moves back and forth along the length direction of the screw rail 401 (radial direction of the rail groove rotating disc 403), and the load-bearing block on the screw rail 401 receives the upper concrete nozzle grabbing height angle adjustment part 500, so that the upper concrete injection pipe and injection port can perform linear displacement and circular rotation at the same time, thereby changing the concrete injection position.

[0060] Depend on Figure 8As shown, the concrete nozzle grabbing height angle adjustment part 500 is connected with a swivel arm 502, a first telescopic mechanism 501 and a concrete nozzle grabbing clamp 503 in sequence from bottom to top. The swivel arm 502 is installed on the load-bearing block of the screw guide rail 401 in the circumferential surface displacement part 400. The swivel arm 502 is used to perform a swivel motion to drive the concrete nozzle grabbing part 600 above the concrete nozzle grabbing height angle adjustment part 500 to perform a large angle rotation. The upper part of the swivel arm 502 is concentrically connected to the first telescopic mechanism 501, which can achieve the height change of the upper concrete nozzle grabbing part 600 through telescopic changes. The side of the first telescopic mechanism 501 is fixed with a concrete nozzle grabbing clamp 503 by nuts and bolts. The concrete nozzle is grabbed by the concrete nozzle grabbing clamp 503, so that the bearing capacity of the concrete nozzle grabbing clamp 610 in the concrete nozzle grabbing part 600 is reduced, and the stability of the concrete injection pipe grabbing is ensured.

[0061] Depend on Fig. 9 and Fig.10As shown, the concrete nozzle grabbing part 600 is sequentially installed with a fixed base 601, a lower protrusion 602, a lower support platform 603 with a hollow notch, a small support bar 604, a small hydraulic cylinder 605, a small cylindrical horizontal bar 606, a large cylindrical horizontal bar 607, an upper support platform 608, a second telescopic mechanism 609, a concrete nozzle grabbing clamp 610 and a distance sensor 611 from bottom to top, and the fixed base 601 is fixed above the first telescopic mechanism 501 in the concrete nozzle grabbing height angle adjustment part 500 by nuts and bolts. The fixed base 601 is connected to the lower support platform 603 with hollow notches through four rectangular parallelepiped columns. The hollow notches of the lower support platform 603 with hollow notches provide a gap for the small hydraulic cylinder 605 to pass through. One end of the lower support platform 603 with hollow notches extends downwardly to the lower protrusion 602. The upper and lower ends of the two groups of angle-changing parts cross-connected by two small support bars 604 are respectively connected to the upper support platform 608 and the lower support platform 603 with hollow notches. The two surfaces of the lower protrusion 602 are welded by small cylindrical horizontal bars 606. The circular hole below the small hydraulic cylinder 605 passes through the small cylindrical horizontal bars 606. The middle position of a small support bar 604 on the inner side of one side is welded to the middle position of the small support bar 604 on the inner side of the other side through a large cylindrical horizontal bar 607. At the same time, the circular hole connected to the upper protruding part of the small hydraulic cylinder 605 passes through the large cylindrical horizontal bar 607. Thus, when the small hydraulic cylinder 605 is retracted, the large cylindrical horizontal bar 607 moves toward the direction close to the small cylindrical horizontal bar 606, and because it is connected to the two small support bars 604, it is limited by the position, thereby driving the small support bar 604 and the upper support platform 608 to rotate counterclockwise. At the same time, the small support bar 604 rotates counterclockwise, and the upper support platform 608 tends to be vertical from the horizontal state in the middle position. Similarly, when the small hydraulic cylinder 605 is extended, the large cylindrical horizontal bar 607 moves away from the small cylindrical horizontal bar 606, and because it is connected to the two small support bars 604, it is limited by the position, thereby driving the small support bar 604 and the upper support platform 608 to rotate clockwise. At the same time, the small support bar 604 rotates clockwise, and the upper support platform 608 tends to be horizontal from the vertical state in the middle position, thereby further realizing the change of the concrete nozzle grabbing angle. The second telescopic mechanism 609 is fixedly connected to the top of the support platform 608. The second telescopic mechanism 609 can more accurately control the distance between the concrete nozzle grabbing clamp 610 and the tunnel slope. The concrete nozzle grabbing clamp 610 is connected to the top of the second telescopic mechanism 609 by nuts and bolts. The concrete nozzle grabbing clamp 610 grabs the concrete nozzle and aims at the tunnel slope for concrete spraying.

[0062] At the same time, a distance sensor 611 is installed on one side of the second telescopic mechanism 609. After sensing the distance between the distance sensor 611 and the tunnel slope, the distance sensor 611 transmits the data to the computer through the ET34XX product. The computer draws corresponding conclusions after data analysis and processing, and then adjusts the height of the concrete nozzle grabbing clamp 610 in real time according to the specific situation to ensure the smooth completion of the concrete spraying operation.

[0063] Accordingly, the method for using the concrete mixing and spraying device for tunnel construction of the present invention comprises the following steps:

[0064] The device is placed in the tunnel, and the required concrete raw materials are loaded into the three raw material tanks 102 of the mixing tank part 100. At the same time, the opening size of the adjustable discharge port 103 is adjusted according to the actual situation and specific needs, and then the mixing ratio of each raw material is adjusted. Then the driving motor 201 of the stirring rod part 200 is started to start the mixing operation. When the concrete state is suitable, the concrete outlet 104 is opened, and the pump machine below is connected through a pipeline. The outlet of the pump machine is connected to the concrete injection pipeline. The concrete nozzle grabbing clamp 503 is used to clamp the pipe wall of the concrete injection pipeline, and the concrete nozzle is clamped and aimed at the tunnel slope with the concrete nozzle grabbing clamp 610. Then, according to the change of the injection position, the movement state of each height, displacement, and angle adjustment mechanism in the scissor lift part 300, the circumferential surface displacement part 400, the concrete nozzle grabbing height angle adjustment part 500 and the concrete nozzle grabbing part 600 is timely controlled. At the same time, the distance sensor 611 is used for real-time monitoring to accurately control the concrete injection distance. This is the end of the use.

[0065] The above description is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be understood by anyone familiar with the technology within the technical scope disclosed by the present invention should be included in the scope of the present invention.

Claims

1. A concrete mixing and spraying device for tunnel construction, characterized in that: include: A stirring tank part (100), comprising a stirring tank (101), three raw material tanks (102) installed on the annular wall of the stirring tank (101), and an adjustable discharge port (103) fixed at the outlet of the raw material tank (102); A stirring rod part (200), located in the middle of the stirring tank (101), is used to achieve uniform stirring of the concrete in the stirring tank (101); A scissor lift portion (300) mounted above the stirring rod portion (200); The circumferential displacement part (400) is installed above the scissor lift part (300), and comprises a rotating disc with a track groove (403), and a screw guide rail (401) driven by a motor (402) to make a circular motion at the center of the rotating disc with a track groove (403); The concrete nozzle grabbing height angle adjustment part (500) is installed on the bearing block of the screw rod slide rail (401), and comprises a swivel arm (502), a first telescopic mechanism (501) and a concrete nozzle grabbing clamp (503) which are sequentially connected from bottom to top; The concrete nozzle grabbing part (600) is installed above the first telescopic mechanism (501) and is used to adjust the angle of the concrete nozzle so as to aim at the tunnel slope for concrete spraying.

2. The concrete mixing and spraying device for tunnel construction according to claim 1, characterized in that: The main body of the stirring rod part (200) comprises, from top to bottom, a driving motor (201), a main shaft (202), an eccentric circular hole shaft (205), a secondary shaft (206), a first ring column (207), a first spherical surface (208), a pinion (210), a second spherical surface (211), a second ring column (212), a third shaft (213) and a stirring handle (214); The driving motor (201) is connected with the main shaft (202) and drives the main shaft (202) to rotate. The eccentric circular hole shaft (205) is welded below the main shaft (202). When the main shaft (202) rotates along its vertical axis, it drives the eccentric circular hole shaft (205) to rotate around the axis of the main shaft (202) at a certain inclination angle. The eccentric circular hole shaft (205) is provided with a secondary shaft (206) downwardly along its axis. The secondary shaft (206) passes through a first spherical surface (208). The hemispherical diameter of the first spherical surface (208) is larger than the diameter of the circular hole of the first ring column (207). When the secondary shaft (206) rotates with the eccentric circular hole shaft (205), the first spherical surface (208) swings in contact with the circumference of the circular hole of the first ring column (207). A pinion gear (210) is fixed below the circular plane of the first spherical surface (208), and the pinion gear (210) drives the second spherical surface (211), the third shaft (213) and the stirring handle (214) below it to rotate together; wherein the third shaft (213) passes through the second spherical surface (211), and the hemispherical diameter of the second spherical surface (211) is larger than the diameter of the circular hole of the second ring column (212), so that when the third shaft (213) rotates with the pinion gear (210), the second spherical surface (211) swings in contact with the circumference of the circular hole of the second ring column (212), and the rotation of the third shaft (213) drives the stirring handle (214) welded below it to rotate, thereby performing a concrete mixing operation.

3. The concrete mixing and spraying device for tunnel construction according to claim 2, characterized in that: The main shaft (202) cooperates with the first gear (203) through a belt (204) at the bottom, and the first gear (203) is connected to the large gear (209) through a cylindrical rod welded at the bottom, and the two rotate synchronously, and the large gear (209) is meshed with the small gear (210). When the main shaft (202) drives the first gear (203) to rotate through the belt (204), the large gear (209) rotates accordingly. At the same time, the rotation of the large gear (209) drives the small gear (210) to rotate, and then drives the second spherical surface (211), the third shaft (213) and the stirring hand (214) below the small gear (210) to rotate together.

4. The concrete mixing and spraying device for tunnel construction according to claim 1, characterized in that: The bottom surface of the rail groove rotating disc (403) is a circular bottom plate, and the circumference above the circular bottom plate is a circle of annular grooves. The motor (402) is installed at the central part of the rail groove rotating disc (403), and a plate surface is radially extended outward from the top thereof. A screw rod slide rail (401) is fixed on the plate surface by nuts and bolts, and the motor (402) drives the plate surface to make circular motion. A support foot extends downward from one end of the plate surface, and the support foot is embedded in the groove of the rotating disc (403) with a rail groove, so that the screw rod slide rail (401) can be effectively balanced and supported from below when rotating around the center of the circle.

5. The concrete mixing and spraying device for tunnel construction according to claim 1, characterized in that: The swivel arm (502) is mounted on the bearing block of the screw guide rail (401) in the circumferential displacement part (400). The swivel arm (502) performs swivel motion to drive the concrete nozzle grabbing part (600) above the concrete nozzle grabbing height angle adjustment part (500) to perform large-angle swivel motion. The upper part of the swivel arm (502) is concentrically connected to the first telescopic mechanism (501), which can achieve height change of the upper concrete nozzle grabbing part (600) through telescopic change. The side of the first telescopic mechanism (501) is fixed with a concrete nozzle grabbing clamp (503) through nuts and bolts. The concrete nozzle is grabbed by the concrete nozzle grabbing clamp (503), thereby reducing the bearing capacity of the concrete nozzle grabbing clamp (610) in the concrete nozzle grabbing part (600).

6. The concrete mixing and spraying device for tunnel construction according to claim 1, characterized in that: The concrete nozzle grasping part (600) is provided with a fixed base (601), a lower protrusion (602), a lower support platform (603) with a hollow notch, a small support bar (604), a small hydraulic cylinder (605), a small cylindrical horizontal bar (606), a large cylindrical horizontal bar (607), an upper support platform (608), a second telescopic mechanism (609), a concrete nozzle grasping clamp (610) and a distance sensor (611) in sequence from bottom to top, and the fixed base (601) is fixed above the first telescopic mechanism (501) in the concrete nozzle grasping height angle adjustment part (500) by nuts and bolts; The fixed base (601) is connected to the lower support platform (603) with a hollow notch through four rectangular columns. The hollow notch of the lower support platform (603) with a hollow notch provides a gap for the small hydraulic cylinder (605) to pass through. A lower protrusion (602) extends downward from one end of the lower support platform (603) with a hollow notch. The upper and lower ends of two groups of angle changing parts cross-connected by two small support bars (604) are respectively connected to the upper support platform (608) and the lower support platform (608) with a hollow notch. Support platform (603); two surfaces of the lower protrusion (602) are welded through a small cylindrical cross bar (606); the circular hole below the small hydraulic cylinder (605) passes through the small cylindrical cross bar (606); the middle position of a small support bar (604) on the inner side of one side is welded to the middle position of the small support bar (604) on the inner side of the other side through a large cylindrical cross bar (607); at the same time, the circular hole connected to the upper protruding part of the small hydraulic cylinder (605) passes through the large cylindrical cross bar (607); When the small hydraulic cylinder (605) is retracted, the large cylindrical horizontal bar (607) moves in a direction close to the small cylindrical horizontal bar (606), and because it is connected to the two small support bars (604), it is restricted by the position, thereby driving the small support bar (604) and the upper support platform (608) to rotate counterclockwise; at the same time, the small support bar (604) rotates counterclockwise, and the upper support platform (608) tends to a vertical state from a horizontal state in the middle position; when the small hydraulic cylinder (605) is extended, the large cylindrical horizontal bar (607) moves in a direction away from the small cylindrical horizontal bar (606), and because it is connected to the two small support bars (604), it is restricted by the position, thereby driving the small support bar (604) and the upper support platform (608) to rotate clockwise; at the same time, the small support bar (604) rotates clockwise, and the upper support platform (608) tends to a horizontal state in the middle position from a vertical state, thereby further realizing the change of the concrete nozzle grabbing angle; The upper part of the support platform (608) is fixedly connected to a second telescopic mechanism (609), which is used to control the distance between the concrete nozzle grabbing clamp (610) and the tunnel slope surface. The upper part of the second telescopic mechanism (609) is connected to the concrete nozzle grabbing clamp (610) by nuts and bolts, and the concrete nozzle grabbing clamp (610) grabs the concrete nozzle and aims at the tunnel slope surface to spray concrete.

7. The concrete mixing and spraying device for tunnel construction according to claim 1, characterized in that: The adjustable material outlet (103) is equipped with a driver (1031), two transition cylinders (1033), five opening and closing blades (1032) and a group of long belts (1034); a battery for driving the long belt (1034) to rotate is installed in the driver (1031); the two transition cylinders (1033) are respectively installed on both sides of the driver (1031); the five opening and closing blades (1032) are fixed on the bottom disk of the adjustable material outlet (103) at equal intervals; a small distance is spaced between every two opening and closing blades (1032) to facilitate their respective opening and closing rotational movements; the long belt (1034) respectively passes around the outer arc surface of the driver (1031), the inner arc surfaces of the two transition cylinders (1033), and the outer arc surfaces of the five opening and closing blades (1032); When the driver (1031) rotates clockwise, it drives the long belt (1034) to rotate clockwise, thereby driving the five opening and closing blades (1032) to converge toward the center of the bottom disk of the adjustable discharge port (103), thereby shrinking or closing the discharge port; when the driver (1031) rotates counterclockwise, it drives the long belt (1034) to transmit counterclockwise, thereby driving the five opening and closing blades (1032) to spread toward the circumference of the bottom disk of the adjustable discharge port (103), thereby expanding or opening the discharge port.

8. The concrete mixing and spraying device for tunnel construction according to claim 1, characterized in that: The scissor lift part (300) comprises a load-bearing platform (301), a large hydraulic cylinder (302) and a large support bar (303) from top to bottom. The two sides of the load-bearing platform (301) are respectively connected to the lifting part where two groups of large support bars (303) intersect. The upper horizontal bar and the lower horizontal bar between the two large support bars (303) are connected by the large hydraulic cylinder (302). The expansion and contraction change of the large hydraulic cylinder (302) drives the angle change of the intersecting large support bars (303), thereby driving the vertical height change of the scissor lift part (300).

9. The concrete mixing and spraying device for tunnel construction according to claim 6, characterized in that: A distance sensor (611) is installed on one side of the second telescopic mechanism (609).

10. A method for using the concrete mixing and spraying device for tunnel construction according to any one of claims 1 to 9, characterized in that: The steps are: S1. Place the device in a tunnel, and load the required concrete raw materials into the three raw material tanks (102) of the mixing tank part (100). At the same time, adjust the opening size of the adjustable discharge port (103) according to the actual situation and specific needs, and then adjust the mix ratio of each raw material; S2, then start the driving motor (201) of the stirring rod part (200) to start the stirring operation. When the concrete is in a suitable state, open the concrete outlet (104), connect the pump machine below through a pipeline, connect the outlet of the pump machine to the concrete injection pipeline, clamp the pipe wall of the concrete injection pipeline with a concrete nozzle grasping clamp (503), and clamp the concrete nozzle with a concrete nozzle grasping clamp (610) to aim at the tunnel slope surface; S3, then, according to the change of the injection position, timely control the movement state of each height, displacement and angle adjustment mechanism in the scissor lift part (300), the circumferential surface displacement part (400), the concrete nozzle gripping height angle adjustment part (500) and the concrete nozzle gripping part (600); S4. Use the distance sensor (611) to monitor in real time and accurately control the concrete spraying distance. This is the end of the use.

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