Automatic high-viscosity and high-toughness thin spraying material spraying device for roadway surface protection

Abstract

The invention relates to a spraying device, in particular to an automatic spraying device for a high-viscosity and high-toughness thin spraying material for roadway surface protection, which comprises a frame, a mounting plate is arranged at the top of the frame, crawler wheels are mounted on two sides of the frame, and a mixing cylinder is mounted on the middle side of the top of the mounting plate through a support frame; a lifting mechanism used for lifting the supporting table is arranged at the top of the mounting plate. According to the device, the supporting table can be driven to flexibly ascend and descend through the lifting mechanism, the construction requirement of a top plate with the height larger than 3.5 m is easily met, manual rod lifting or scaffold erecting is not needed, and the operation intensity is greatly reduced; the arc-shaped electric sliding rail is matched to drive the spray gun to slide along the arc-shaped track of the roadway roof, the clamping device is combined to stably fix the spray gun, it is ensured that the high thick slurry spraying distance is controlled within the optimal range, spraying uniformity is achieved, and the roof spraying quality is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a spraying device, in particular to an automatic spraying device for high-thick and tough thin spraying material used for roadway surface protection. BACKGROUND

[0002] With the rapid development of mining industry in China, mine engineering presents the development trend of large engineering quantity, multiple types, high investment and long cycle. The stability and safety of roadway construction directly determine the quality and benefit of mine production. At present, various support forms such as lining support, shed support, surrounding rock grouting reinforcement support and anchor shotcrete support have been formed in China. Among them, the anchor shotcrete support is the most widely used, and the shotcrete material used is mainly the low-cost water-hardening binder such as shotcrete. However, the shotcrete has the problem of huge material consumption, and with the increase of mining depth, it gradually exposes the problems of heavy transportation burden, non-timely spraying (mining imbalance), high operation intensity, etc., which not only threatens the safety of mine, but also seriously limits the improvement of mining efficiency, and new supporting technology is needed to make up for the existing deficiencies.

[0003] In recent years, the roadway thin spraying sealing and supporting technology (TSL) has gradually emerged. This technology has the advantages of small film thickness, fast solidification speed and small rebound amount. Compared with traditional shotcrete, it can significantly reduce the material transportation pressure and operation intensity, and has higher construction efficiency. At the same time, it has good surrounding rock deformation adaptation, sealing and surface rock dislocation inhibition capacity, and has been preliminarily applied in the fields of surrounding rock surface sealing, rapid temporary support after blasting, rock burst protection, pillar reinforcement and rock fall prevention, etc., showing great potential to replace shotcrete. However, there are still two key problems to be solved in the practical application of TSL technology in mines: first, the spraying quality of the roadway roof is difficult to meet the standards. The spraying material is high-thick slurry, which needs to control the spraying distance within 1 meter (50 centimeters for the best), and the existing manual handheld spraying gun mode cannot meet the construction requirements of the roof above 3.5 meters. The solution of manual pole lifting or scaffolding has the defects of high operation intensity, uneven spraying, high safety hazards, etc.; second, the equipment transportation is not convenient. Although the existing spraying device weighs no more than 200 kg, it depends on manual transportation. In the scene where large machinery frequently enters and exits the roadway excavation face, it seriously affects the excavation efficiency and rapid support time efficiency, weakens the efficient construction advantage of TSL technology, and limits its application range. SUMMARY

[0004] In order to overcome the shortcomings of the prior art, the present application provides an automatic spraying device for high-thick and tough thin spraying material used for roadway surface protection.

[0005] Technical solution: An automated spraying device for high-density, high-toughness thin-film spraying material for roadway surface protection includes a frame, a mounting plate, tracked wheels, a support frame, a mixing cylinder, a spraying assembly, a lifting mechanism, a support platform, a sliding assembly, and a clamping device. The mounting plate is installed on the top of the frame, and tracked wheels are installed on both sides of the frame. The mixing cylinder is installed on the top center of the mounting plate via the support frame. The top of the mounting plate is equipped with a lifting mechanism for raising the support platform. A sliding assembly capable of driving the spraying assembly to slide is installed on the support platform. A clamping device for fixing the spraying assembly is installed on the sliding assembly. The spraying assembly is connected to the bottom of the mixing cylinder.

[0006] Furthermore, it is particularly preferred that the spraying assembly includes a high-pressure atomizing pump, a discharge pipe, a connector, a spray gun, and a hose. The high-pressure atomizing pump is located on the top center side of the mounting plate. The discharge port on the front side of the high-pressure atomizing pump is connected to the discharge pipe. A connector is installed on the discharge pipe. The connector is connected to one end of the hose, and the other end of the hose is connected to the spray gun.

[0007] Furthermore, it is particularly preferred that the lifting mechanism includes a U-shaped frame, a rotating shaft, a column rod, a sliding block, a hydraulic cylinder, a push rod, a pin, and a mounting frame. A U-shaped frame is provided on the top right side of the mounting plate. Two rotating shafts are laterally rotatably arranged on the U-shaped frame. Column rods are symmetrically arranged on each rotating shaft. Sliding grooves are symmetrically opened at the front and back of the top of the mounting plate. Sliding blocks are slidably arranged in each sliding groove. A hydraulic cylinder is installed at the front side of the sliding groove of the mounting plate. The lifting rod of the hydraulic cylinder is connected to the front side wall of the sliding block. Two push rods are rotatably connected to the rear side of each of the two sliding blocks through a pin. A pin is provided between the other ends of two adjacent push rods. The pin is connected through to the adjacent column rod. A mounting frame is installed at the front end of each column rod through a pin. A support platform is installed on the top of the mounting frame.

[0008] Furthermore, it is particularly preferred that the sliding assembly includes an L-shaped frame, an arc-shaped electric slide rail, and an electric slider. The L-shaped frames are symmetrically arranged at the top of the support platform, and an arc-shaped electric slide rail is arranged between the tops of the two L-shaped frames. An electric slider is slidably arranged on the arc-shaped electric slide rail.

[0009] Furthermore, it is particularly preferred that the clamping device includes a rectangular plate, a mounting base, guide rods, guide blocks, a lead screw, a nut, a rotary motor, a fixing plate, and a clamping block. The rectangular plate is provided on the top of the electric slider, and the mounting base is provided on the lower part of the front side wall of the rectangular plate. Guide rods are symmetrically arranged between the mounting base and the electric slider. Guide blocks are slidably arranged on each guide rod. The lead screw is rotatably arranged between the mounting base and the electric slider. A nut is embedded in the middle of the guide block and screwed into the lead screw. A rotary motor is provided on the lower part of the front side wall of the rectangular plate. The output shaft of the rotary motor is connected to the bottom of the lead screw. A fixing plate is provided on the front side of the guide block, and a clamping block for clamping and fixing the spray gun is provided on the fixing plate.

[0010] Furthermore, it is particularly preferred that the mixing drum also includes a stirring device, which includes a horizontal plate, a rotating shaft, stirring blades and a servo motor. The horizontal plate is provided at the top of the mixing drum, the rotating shaft is rotatably provided in the middle of the horizontal plate, the stirring blades are provided below the rotating shaft, the servo motor is provided at the top of the horizontal plate, and the output shaft of the servo motor is connected to the rotating shaft.

[0011] In addition, it is particularly preferred that a support base is also included, with a support base provided on the front side of the top of the mounting plate, the support base being used to support the column rod.

[0012] Furthermore, it is particularly preferred that the mixture also includes a vibrator, which is provided on the lower part of the outer wall of the mixing cylinder. Beneficial effects

[0013] 1. This device can drive the support platform to rise and fall flexibly through the lifting mechanism, easily adapting to the construction needs of roof slabs with a height of 3.5 meters or more. It eliminates the need for manual lifting or scaffolding, significantly reducing the intensity of work. With the help of the arc-shaped electric slide rail, the spray gun slides along the arc-shaped trajectory of the roadway roof. Combined with the clamping device to firmly fix the spray gun, it ensures that the spraying distance of the high-viscosity slurry is controlled within the optimal range, achieving uniform spraying, significantly improving the quality of roof slab spraying, and avoiding the safety hazards caused by manual operation.

[0014] 2. This device adopts a tracked wheel walking mechanism, which can travel stably on uneven road surfaces in tunnels without manual transportation, avoiding mutual interference with large machinery at the tunneling face, and ensuring tunneling efficiency and rapid support timeliness. At the same time, it integrates a mixing device and a vibrator to ensure that the high-viscosity slurry is mixed evenly and discharged smoothly. With the help of a high-pressure atomizing pump, it realizes efficient atomization and spraying of slurry, which helps the slurry solidify quickly, further improving support efficiency, breaking through the application limitations of existing TSL technology, and expanding its application scope. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a schematic diagram of the lifting structure of the present invention.

[0017] Figure 3 This is a schematic diagram of the installation structure of the lifting mechanism of the present invention.

[0018] Figure 4 This is a schematic diagram of the installation structure of the spray assembly of the present invention.

[0019] Figure 5 This is a three-dimensional structural diagram of the clamping device of the present invention.

[0020] Figure 6 This is a three-dimensional structural diagram of the stirring device of the present invention.

[0021] In the diagram: 1. Chassis; 2. Mounting plate; 3. Track wheel; 4. Support frame; 5. Mixing cylinder; 6. Spray assembly; 61. High-pressure atomizing pump; 62. Discharge pipe; 63. Connector; 64. Spray gun; 65. Hose; 7. Lifting mechanism; 71. U-shaped frame; 72. Rotating shaft; 73. Column rod; 74. Slide groove; 75. Sliding block; 76. Hydraulic cylinder; 77. Push rod; 78. Pin; 79. Mounting frame; 8. Support platform; 9. Sliding assembly; 9 1. L-shaped frame; 92. Arc-shaped electric slide rail; 93. Electric slider; 10. Clamping device; 101. Rectangular plate; 102. Mounting base; 103. Guide rod; 104. Guide block; 105. Lead screw; 106. Nut; 107. Rotary motor; 108. Fixing plate; 109. Clamping block; 11. Stirring device; 111. Horizontal plate; 112. Rotating shaft; 113. Stirring blade; 114. Servo motor; 12. Support base; 13. Vibrator. Detailed Implementation

[0022] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0023] Example: Figures 1-4As shown, an automated spraying device for high-density, high-toughness thin-film spraying material for roadway surface protection includes a frame 1, a mounting plate 2, tracked wheels 3, a support frame 4, a mixing cylinder 5, a spraying assembly 6, a lifting mechanism 7, a support platform 8, a sliding assembly 9, and a clamping device 10. The mounting plate 2 is mounted on the top of the frame 1, and tracked wheels 3 are mounted on both sides of the frame 1. A diesel engine for driving the tracked wheels 3 is mounted on the frame 1. The mixing cylinder 5 is mounted on the top center of the mounting plate 2 via the support frame 4. A lifting mechanism 7 for raising the support platform 8 is provided on the top of the mounting plate 2. 7 includes a U-shaped frame 71, a rotating shaft 72, a columnar rod 73, a sliding block 75, a hydraulic cylinder 76, a push rod 77, a pin 78, and a mounting bracket 79. The U-shaped frame 71 is located on the top right side of the mounting plate 2. Two rotating shafts 72 are laterally rotatable on the U-shaped frame 71, and columnar rods 73 are symmetrically arranged on each rotating shaft 72. The top of the mounting plate 2 has symmetrically opened sliding grooves 74, and sliding blocks 75 are slidably arranged within each groove 74. A hydraulic cylinder 76 is installed at the front of the sliding groove 74 of the mounting plate 2. The lifting rod of the hydraulic cylinder 76 is connected to the front wall of the sliding block 75. Each sliding block 75 has two push rods 77 rotatably connected to its rear side via a pin 78. A pin 78 is positioned between the other ends of two adjacent push rods 77, and the pin 78 is connected through a nearby cylindrical rod 73. Each cylindrical rod 73 has a mounting bracket 79 mounted on its front end via the pin 78. A support platform 8 is mounted on the top of the mounting bracket 79, and a sliding component 9 capable of driving the spray assembly 6 to slide is mounted on the support platform 8. The spray assembly 6 includes a high-pressure atomizing pump 61, a discharge pipe 62, a connector 63, a spray gun 64, and a hose 65. A high-pressure atomizing pump is located on the top center of the mounting plate 2. Pump 61, high-pressure atomizing pump 61 has a discharge pipe 62 connected to its front discharge port. A connector 63 is installed on the discharge pipe 62. The connector 63 is connected to one end of a hose 65. The other end of the hose 65 is connected to a spray gun 64. The inlet of the high-pressure atomizing pump 61 is connected to the bottom of the mixing cylinder 5. A clamping device 10 for fixing the spraying assembly 6 is installed on the sliding assembly 9. It also includes a support base 12 and a vibrator 13. A support base 12 is provided on the front side of the top of the mounting plate 2. The support base 12 is used to support the column rod 73. A vibrator 13 is provided on the lower part of the outer wall of the mixing cylinder 5.

[0024] like Figure 1 and Figure 3 As shown, the sliding component 9 includes an L-shaped frame 91, an arc-shaped electric slide rail 92, and an electric slider 93. The support platform 8 has L-shaped frames 91 symmetrically arranged at the top front and back. An arc-shaped electric slide rail 92 is arranged between the tops of the two L-shaped frames 91. An electric slider 93 is slidably arranged on the arc-shaped electric slide rail 92.

[0025] like Figure 1 and Figure 5As shown, the clamping device 10 includes a rectangular plate 101, a mounting base 102, a guide rod 103, a guide block 104, a lead screw 105, a nut 106, a rotary motor 107, a fixing plate 108, and a clamping block 109. The rectangular plate 101 is provided on the top of the electric slider 93, and the mounting base 102 is provided on the lower part of the front side wall of the rectangular plate 101. The guide rods 103 are symmetrically arranged between the mounting base 102 and the electric slider 93. Guide blocks 104 are slidably arranged on the guide rods 103. 4. A lead screw 105 is rotatably arranged between the mounting base 102 and the electric slider 93. A nut 106 is embedded in the middle of the guide block 104. The nut 106 is screwed into the lead screw 105. A rotary motor 107 is arranged on the lower part of the front side wall of the rectangular plate 101. The output shaft of the rotary motor 107 is connected to the bottom of the lead screw 105. A fixing plate 108 is arranged on the front side of the guide block 104. A clamping block 109 for clamping and fixing the spray gun 64 is arranged on the fixing plate 108.

[0026] like Figure 1 and Figure 6 As shown, it also includes a stirring device 11, which includes a horizontal plate 111, a rotating shaft 112, stirring blades 113 and a servo motor 114. The top of the mixing cylinder 5 is provided with a horizontal plate 111, the middle of the horizontal plate 111 is rotatably provided with a rotating shaft 112, the lower side of the rotating shaft 112 is provided with stirring blades 113, the top of the horizontal plate 111 is provided with a servo motor 114, and the output shaft of the servo motor 114 is connected to the rotating shaft 112.

[0027] When this device is needed, the operator pours the water-based emulsion and hydraulic binder into the mixing drum 5. The servo motor 114 is activated to drive the rotating shaft 112 and stirring blades 113 to rotate at high speed. The arc-shaped upper end of the mixing drum 5 prevents the highly viscous slurry from overflowing during mixing. One operator drives the tracked wheels 3 via the diesel engine on the chassis 1, allowing them to move along the uneven surface of the tunnel. Another operator climbs onto the support platform 8 via the steps, inserts the spray gun 64 into the clamping block 109, and then secures it with bolts. When spraying the arc-shaped surface at the top of the tunnel, the operator on the support platform 8 activates the rotary motor 107. The rotary motor 107 drives the lead screw 105 to rotate, which in turn moves the nut 106 up and down. The nut 106, through the guide block 104, moves the fixing plate 108 and the clamping block 109 up and down, which in turn moves the spray gun 64 into the tunnel. The spray gun 64 is adjusted up and down to a suitable spraying distance. The operator controls the rotary motor 107 to stop rotating, and then starts the arc-shaped electric slide rail 92. The arc-shaped electric slide rail 92 drives the electric slider 93 to move along the track. The vibrator 13 works to vibrate the mixing cylinder 5. The high-pressure atomizing pump 61 is started, and the high-pressure atomizing pump 61 pumps out the high-viscosity slurry and atomizes it. Finally, it is sprayed onto the surface of the surrounding rock in the form of tiny emulsion droplets. The tiny emulsion droplets embed into the cracks to achieve bonding between loose rock blocks, which can quickly solidify and improve the spraying quality.

[0028] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An automated spraying device for high-viscosity, high-toughness thin-film spraying material for tunnel surface protection, characterized in that: The vehicle includes a frame (1), a mounting plate (2) on the top of the frame (1), track wheels (3) on both sides of the frame (1), a mixing cylinder (5) on the top center of the mounting plate (2) via a support frame (4), a lifting mechanism (7) for lifting a support platform (8) on the top of the mounting plate (2), a sliding component (9) for driving the spraying component (6) to slide on the support platform (8), a clamping device (10) for fixing the spraying component (6) on the sliding component (9), and the spraying component (6) connected to the bottom of the mixing cylinder (5).

2. An automated spraying device for high-density, high-toughness thin-film spraying material for tunnel surface protection as described in claim 1, characterized in that: The spray assembly (6) includes a high-pressure atomizing pump (61). The high-pressure atomizing pump (61) is provided on the top middle side of the mounting plate (2). The discharge port of the high-pressure atomizing pump (61) is connected to a discharge pipe (62). A connector (63) is installed on the discharge pipe (62). The connector (63) is connected to one end of a hose (65). The other end of the hose (65) is connected to a spray gun (64).

3. An automated spraying device for high-density, high-toughness thin-film spraying material for tunnel surface protection as described in claim 2, characterized in that: The lifting mechanism (7) includes a U-shaped frame (71). The U-shaped frame (71) is located on the top right side of the mounting plate (2). Two rotating shafts (72) are horizontally rotatably mounted on the U-shaped frame (71). Columnar rods (73) are symmetrically mounted on each rotating shaft (72). Sliding grooves (74) are symmetrically opened at the front and back of the top of the mounting plate (2). Sliding blocks (75) are slidably mounted in each sliding groove (74). A hydraulic cylinder (76) is installed at the front side of the sliding groove (74) of the mounting plate (2). The lifting rod of the hydraulic cylinder (76) is connected to the front wall of the sliding block (75). The rear sides of the two sliding blocks (75) are rotatably connected to two push rods (77) through pins (78). A pin (78) is provided between the other ends of two adjacent push rods (77). The pin (78) is connected through to the adjacent column rod (73). The front end of each column rod (73) is mounted with a mounting bracket (79) through the pin (78). The support platform (8) is mounted on the top of the mounting bracket (79).

4. An automated spraying device for high-density, high-toughness thin-film spraying material for tunnel surface protection as described in claim 3, characterized in that: The sliding component (9) includes an L-shaped frame (91), and the L-shaped frame (91) is symmetrically arranged on the top of the support platform (8). An arc-shaped electric slide rail (92) is arranged between the tops of the two L-shaped frames (91), and an electric slider (93) is slidably arranged on the arc-shaped electric slide rail (92).

5. An automated spraying device for high-density, high-toughness thin-film spraying material for tunnel surface protection according to claim 4, characterized in that: The clamping device (10) includes a rectangular plate (101), the rectangular plate (101) is provided on the top of the electric slider (93), a mounting base (102) is provided on the lower part of the front side wall of the rectangular plate (101), guide rods (103) are symmetrically arranged between the mounting base (102) and the electric slider (93), guide blocks (104) are slidably arranged on each guide rod (103), and a lead screw (105) is rotatably arranged between the mounting base (102) and the electric slider (93). A nut (106) is embedded in the middle of the guide block (104), and the nut (106) is screwed into the lead screw (105). A rotary motor (107) is provided on the lower part of the front side wall of the rectangular plate (101), and the output shaft of the rotary motor (107) is connected to the bottom of the lead screw (105). A fixing plate (108) is provided on the front side of the guide block (104), and a clamping block (109) for clamping and fixing the spray gun (64) is provided on the fixing plate (108).

6. An automated spraying device for high-density, high-toughness thin-film spraying material for tunnel surface protection as described in claim 5, characterized in that: It also includes a stirring device (11), which includes a horizontal plate (111). The horizontal plate (111) is provided on the top of the mixing cylinder (5). A rotating shaft (112) is rotatably provided in the middle of the horizontal plate (111). A stirring blade (113) is provided on the lower side of the rotating shaft (112). A servo motor (114) is provided on the top of the horizontal plate (111). The output shaft of the servo motor (114) is connected to the rotating shaft (112).

7. An automated spraying device for high-density, high-toughness thin-film spraying material for tunnel surface protection as described in claim 6, characterized in that: It also includes a support base (12), which is provided on the front side of the top of the mounting plate (2) and is used to support the column rod (73).

8. An automated spraying device for high-density, high-toughness thin-film spraying material for tunnel surface protection according to claim 7, characterized in that: It also includes a vibrator (13), which is provided on the lower part of the outer wall of the mixing cylinder (5).

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