Spraying device

Abstract

The utility model relates to the technical field of mine construction equipment, in particular to a spraying device which comprises a bottom plate, a rotating assembly and a spraying assembly. The rotating assembly comprises a first connecting frame, a second connecting frame, a first rotating shaft, a second rotating shaft, a first driver, a second driver and a mounting table, the first connecting frame is fixedly arranged on the bottom plate, the first rotating shaft is rotationally connected to the first connecting frame, the first driver is connected to the first rotating shaft, and the second connecting frame is arranged on the first rotating shaft; the second rotating shaft is connected to the second connecting frame and the mounting table, and the second driver is connected to the second rotating shaft; the spraying assembly comprises a spraying gun and a grip, the grip is connected to the spraying gun and provided with a first magnetic attraction part, the mounting table is provided with a mounting hole, the mounting hole is provided with a second magnetic attraction part, and the first magnetic attraction part is connected to the second magnetic attraction part in a magnetic attraction mode. In conclusion, the spraying device is large in spraying range and capable of conducting comprehensive spraying on a roadway, the spraying gun is difficult to fall off during spraying, and the stability and accuracy of spraying operation are high.

Description

Technical Field

[0001] This utility model relates to the field of mine construction equipment technology, and in particular to a spraying device. Background Technology

[0002] Currently, in underground coal mine anchor mesh support operations, shotcrete and mortar are commonly used to seal the roadways to address the problems of weathering of surrounding rock and corrosion of anchor metal mesh in humid environments. Existing technology may utilize a similar utility model patent (CN214007167U) that discloses a pneumatic spraying device for thin-film spraying in coal mines. This device connects a high-pressure pipe with a spray gun to the front wall of the pneumatic spraying machine, and a placement plate is connected to the drive shaft of a rotating motor. Rotating the motor allows the spray gun, located on its base plate, to rotate horizontally while spraying. The spray gun handle is inserted into a through hole in the placement plate, facilitating easy access for workers to switch between manual and automatic spraying.

[0003] However, the existing technical solution has obvious defects in the design and use of the spray gun handle: on the one hand, the existing device can only adjust the horizontal angle of the spray gun by rotating the motor, and cannot flexibly adjust the spraying height, which limits the spraying range and makes it difficult to achieve comprehensive and uniform spraying of the tunnel surface, resulting in incomplete spraying and affecting the tunnel sealing effect and support quality; on the other hand, the handle is only directly inserted into the through hole of the placement plate to limit the position of the spray gun. This simple limiting method cannot provide a firm limiting effect when adjusting the spray gun angle, causing the spray gun to fall easily during operation, which not only affects the construction safety, but also reduces the stability and accuracy of the spraying operation. Utility Model Content

[0004] The purpose of this invention is to provide a spraying device to solve the technical problems of existing mine spraying devices having a small spraying range, making it difficult to spray the entire roadway, and the spray gun easily falling off during spraying, thereby reducing the stability and accuracy of the spraying operation.

[0005] To achieve the above objectives, this utility model provides a spraying device, including a base plate, a rotating assembly, and a spraying assembly;

[0006] The rotating assembly includes a first connecting frame, a second connecting frame, a first rotating shaft, a second rotating shaft, a first driver, a second driver, and a mounting platform. The first connecting frame is fixedly mounted on the top surface of the base plate. The first rotating shaft is rotatably connected to the first connecting frame. The first driver is connected to the first rotating shaft and is used to drive the first rotating shaft to rotate. The second connecting frame is fixedly mounted on the first rotating shaft. One end of the second rotating shaft is rotatably connected to the second connecting frame, and the other end is fixedly connected to one side of the mounting platform. The second driver is connected to the second rotating shaft and is used to drive the second rotating shaft to rotate. There is an included angle between the first rotating shaft and the second rotating shaft.

[0007] The spraying assembly includes a spray gun and a handle. One end of the handle is connected to the spray gun, and the other end is provided with a first magnetic attraction part. The other side of the mounting platform is provided with a mounting hole. The bottom and / or wall of the mounting hole are provided with a second magnetic attraction part. The handle is inserted into the mounting hole, and the first magnetic attraction part is magnetically connected to the second magnetic attraction part.

[0008] Optionally, the handle is attached to one end of the spray gun and protrudes from the outer surface of the mounting platform.

[0009] Optionally, the first rotating shaft is horizontally arranged, with both ends of the first rotating shaft rotatably connected to the first connecting frame; the second rotating shaft is vertically arranged, with the bottom end of the second rotating shaft rotatably connected to the second connecting frame and the top end fixedly connected to the bottom surface of the mounting platform; and the mounting hole is located on the top surface of the mounting platform.

[0010] Optionally, the first connecting frame includes two side plates, which are horizontally spaced on the top surface of the base plate. The two ends of the first rotating shaft are rotatably connected to the two side plates respectively, and the first driver is mounted on the side of one of the side plates away from the other side plate.

[0011] The second connecting frame has a receiving cavity, and the second driver is installed in the receiving cavity.

[0012] Optionally, it also includes a material storage assembly, a mixing assembly, and a shotcrete machine. The mixing assembly includes a stirrer, the material storage assembly includes a material tank with a mixing chamber inside, the stirrer is installed on the material tank, and the stirrer is used to stir the slurry located in the mixing chamber. The shotcrete machine and the material tank are installed on the top surface of the base plate, the material tank is connected to the shotcrete machine, and the shotcrete machine is connected to the spray gun.

[0013] Optionally, the stirring assembly further includes a stirring driver, the stirrer includes a stirring rod, the top surface of the material tank is provided with a through hole extending into the stirring chamber, the stirring rod is disposed through the through hole, the stirring driver is connected to the top end of the stirring rod, and the stirring driver is used to drive the stirring rod to rotate.

[0014] Optionally, the stirrer further includes a first stirring element and a plurality of second stirring elements;

[0015] The first stirring element is disposed at the bottom end of the stirring rod. The first stirring element includes a plurality of first stirring columns arranged around the stirring rod. Each first stirring column includes a first column segment, a second column segment, a third column segment, and a fourth column segment connected sequentially from the direction closest to the stirring rod to the direction furthest from the stirring rod. The first column segment is arranged in parallel, the second column segment and the third column segment are arranged at an angle, the fourth column segment is arranged vertically, and the top of the fourth column segment is higher than any of the second stirring elements.

[0016] Multiple second stirring elements are spaced apart from the stirring rod in the vertical direction and are all located above the first stirring element. Each second stirring element includes multiple second stirring columns, which are arranged around the stirring rod. Each second stirring column includes a fifth column segment, a sixth column segment, and a seventh column segment connected sequentially from the direction close to the stirring rod to the direction away from the stirring rod. The fifth column segment is arranged in parallel, and the sixth column segment and the seventh column segment are arranged at an angle.

[0017] The second column segment and the sixth column segment are arranged in parallel, and the third column segment and the seventh column segment are arranged in parallel.

[0018] Optionally, the material storage assembly further includes multiple support columns, the bottom surface of the material bucket is provided with a discharge opening communicating with the mixing chamber, the shotcrete machine is connected to the discharge opening, and the top end of each support column is connected to the bottom surface of the material bucket and the bottom end is connected to the top surface of the base plate.

[0019] Optionally, the bottom surface of the receiving cavity is provided with a material gathering section around the discharge opening, and the height of the material gathering section gradually decreases from its outer side to its inner side.

[0020] Optionally, the system further includes multiple switching valves and multiple material storage assemblies. The stirring assembly also includes a third rotating shaft, a support plate, multiple first bevel gears, and multiple stirrers. Each stirrer is installed on the material hopper in correspondence with a material storage assembly. The switching valves are installed between the material hopper and the shotcrete machine. The stirring driver is installed on the top surface of one of the material hoppers. The support plate is located on the top surface of the other material hoppers and has a support hole. The third rotating shaft is horizontally arranged and connected to the stirring driver. The third rotating shaft passes through and is rotatably connected to the support hole. Multiple first bevel gears are fixedly arranged on the third rotating shaft. Each stirrer also includes a second bevel gear, which is fixedly arranged on the top end of the stirring rod. Each first bevel gear is connected to a second bevel gear in correspondence.

[0021] Compared with the prior art, the spraying device implemented in this utility model has the following advantages:

[0022] In this spraying device, a first connecting shaft is rotatably connected to a first connecting frame and fixedly connected to a second connecting frame. A second connecting shaft is rotatably connected to the second connecting frame and fixedly connected to a mounting platform. This ensures that the mounting platform rotates when the first driver drives the first rotating shaft to rotate and when the second driver drives the second rotating shaft to rotate. Furthermore, because there is an included angle between the first and second rotating shafts, when the first and second drivers drive them to rotate, the yaw and pitch angles of the mounting platform and the spray gun mounted on it can be adjusted. This allows the spray gun to spray different positions in the vertical and horizontal directions, enabling the spray gun mounted on the mounting platform to perform comprehensive spraying of the tunnel. Furthermore, the end of the handle furthest from the spray gun is provided with a first magnetic attraction part, and one or both of the wall and bottom of the mounting hole of the mounting platform are provided with a second magnetic attraction part. When the handle is inserted into the mounting hole, the first and second magnetic attraction parts are magnetically connected, allowing the handle to be easily and relatively securely connected to the mounting platform. When the mounting platform drives the spray gun to rotate, the mounting platform and the spray gun can maintain a relative positional relationship, making it difficult for the spray gun to detach from the mounting hole. At the same time, the operator can also use a little more force to pull off the handle, making it convenient to hold the handle for spraying. In summary, the spraying device of this utility model has a large spraying range, can spray the entire tunnel, and the spray gun is unlikely to fall off during spraying, resulting in high stability and accuracy of the spraying operation. Attached Figure Description

[0023] Figure 1 This is a front view of the spraying device of this utility model (sectioning the rotating assembly and the material storage assembly).

[0024] Figure 2 for Figure 1 Cross-sectional view of AA.

[0025] Figure 3This is an exploded view of the mounting platform, spray gun, and handle of this utility model.

[0026] Figure 4 This is a left view of the spraying device of this utility model (ignoring the spraying machine, handle, material storage assembly and mixing assembly).

[0027] Figure 5 This is a left view of the spraying device of this utility model (ignoring the rotating components, rollers, handles, spraying machine and spraying components, and cutting out the material bucket).

[0028] Reference numerals: 1. Base plate; 2. Rotating assembly; 21. First connecting frame; 211. Side plate; 22. Second connecting frame; 221. Receiving cavity; 23. First rotating shaft; 24. Second rotating shaft; 25. First driver; 26. Second driver; 27. Mounting platform; 271. Mounting hole; 3. Spraying assembly; 31. Spray gun; 32. Handle; 321. First magnetic suction part; 4. Material storage assembly; 41. Material bucket; 411. Mixing chamber; 412. Material gathering part; 42. Support column; 5. Mixing assembly; 51. Agitator; 511. Mixing 512. First mixing component; 5121. First mixing column; 51211. First column segment; 51212. Second column segment; 51213. Third column segment; 51214. Fourth column segment; 513. Second mixing component; 5131. Second mixing column; 51311. Fifth column segment; 51312. Sixth column segment; 51313. Seventh column segment; 514. Second bevel gear; 52. Mixing driver; 53. Third rotating shaft; 54. Support plate; 55. First bevel gear; 6. Shotcrete machine; 7. Switch valve; 8. Handle; 9. Roller. Detailed Implementation

[0029] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0030] In the description of this utility model, it should be understood that the terms "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] like Figures 1 to 5 As shown, a spraying device of this utility model includes a base plate 1, a rotating assembly 2, and a spraying assembly 3. The rotating assembly 2 includes a first connecting frame 21, a second connecting frame 22, a first rotating shaft 23, a second rotating shaft 24, a first driver 25, a second driver 26, and a mounting platform 27. The first connecting frame 21 is fixedly disposed on the top surface of the base plate 1. The first rotating shaft 23 is rotatably connected to the first connecting frame 21. The first driver 25 is connected to the first rotating shaft 23 and is used to drive the first rotating shaft 23 to rotate. The second connecting frame 22 is fixedly disposed on the first rotating shaft 23. One end of the second rotating shaft 24 is rotatably connected to the second connecting frame 25. The connecting bracket 22 is fixedly connected to one side of the mounting platform 27 at the other end. The second driver 26 is connected to the second rotating shaft 24. The second driver 26 is used to drive the second rotating shaft 24 to rotate. There is an included angle between the first rotating shaft 23 and the second rotating shaft 24. The spraying assembly 3 includes a spray gun 31 and a handle 32. One end of the handle 32 is connected to the spray gun 31, and the other end is provided with a first magnetic suction part 321. The other side of the mounting platform 27 is provided with a mounting hole 271. The bottom and / or wall of the mounting hole 271 are provided with a second magnetic suction part. The handle 32 is inserted into the mounting hole 271, and the first magnetic suction part 321 is magnetically connected to the second magnetic suction part.

[0033] In the above technical solution, the first connecting shaft is rotatably connected to the first connecting frame 21 and fixedly connected to the second connecting frame 22. The second connecting shaft is rotatably connected to the second connecting frame 22 and fixedly connected to the mounting platform 27. This allows the mounting platform 27 to rotate when the first driver 25 drives the first rotating shaft 23 to rotate and the second driver 26 drives the second rotating shaft 24 to rotate. Furthermore, since there is an included angle between the first rotating shaft 23 and the second rotating shaft 24, when the first driver 25 and the second driver 26 drive them to rotate, the yaw and pitch angles of the mounting platform 27 and the spray gun 31 mounted on the mounting platform 27 can be adjusted. This allows the spray gun 31 to spray different positions in the vertical and horizontal directions, enabling the spray gun 31 mounted on the mounting platform 27 to perform comprehensive spraying of the tunnel. The handle 32 has a first magnetic attraction part 321 at the end away from the spray gun 31. The mounting hole 271 of the mounting platform 27 has a second magnetic attraction part on either the hole wall or the bottom. When the handle 32 is inserted into the mounting hole 271, the first magnetic attraction part 321 and the second magnetic attraction part are magnetically connected, allowing the handle 32 to be easily and securely connected to the mounting platform 27. When the mounting platform 27 drives the spray gun 31 to rotate, the mounting platform 27 and the spray gun 31 maintain a relative position, making it difficult for the spray gun 31 to detach from the mounting hole 271. Simultaneously, workers can use slightly more force to pull off the handle 32, facilitating spraying by holding the handle 32. In summary, this utility model spraying device has a large spraying range, enabling comprehensive spraying of the tunnel, and the spray gun 31 is unlikely to fall off during spraying, resulting in high stability and accuracy in the spraying operation.

[0034] Furthermore, one end of the handle 32 connected to the spray gun 31 protrudes from the outer surface of the mounting platform 27. When one end of the handle 32 is inserted into the mounting hole 271, the middle part of the handle 32 protrudes outward, and there is a gap between the spray gun 31 and the mounting platform 27, so that the operator can hold the protruding part of the handle 32 and pull it out, which makes it convenient for the operator to pull out the handle 32. It also makes it convenient for the operator to hold the protruding part of the handle 32 to adjust the relative position of the spray gun 31 and the mounting platform 27, so as to facilitate the operator to adjust the posture of the spray gun 31.

[0035] Furthermore, the first rotating shaft 23 is horizontally arranged, and its two ends are rotatably connected to the first connecting frame 21. The second rotating shaft 24 is vertically arranged, with its bottom end rotatably connected to the second connecting frame 22 and its top end fixedly connected to the bottom surface of the mounting platform 27. The mounting hole 271 is provided on the top surface of the mounting platform 27 so that when the first driver 25 drives the first rotating shaft 23 to rotate, it adjusts the pitch angle of the spray gun 31, enabling the spray gun 31 to spray different positions in the vertical direction. When the second driver 26 drives the second rotating shaft 24 to rotate, it adjusts the yaw angle of the spray gun 31, enabling the spray gun 31 to spray different positions in the horizontal direction.

[0036] Furthermore, the first connecting frame 21 includes two side plates 211, which are horizontally spaced on the top surface of the base plate 1. The two ends of the first rotating shaft 23 are rotatably connected to the two side plates 211 respectively. The first driver 25 is installed on the side of one of the side plates 211 away from the other side plate 211. The second connecting frame 22 has a receiving cavity 221, and the second driver 26 is installed in the receiving cavity 221, so that the first connecting frame 21 can stably support the first rotating shaft 23 and the first driver 25, and the second connecting frame 22 can stably support the second rotating shaft 24 and the second driver 26. The first rotating shaft 23 can pass through the second connecting frame 22, and the outer side wall of the first rotating shaft 23 can also be fixedly connected to the outer side wall of the second connecting frame 22. In addition, the second rotating frame can be a frame-like component, and the top surface of the second rotating frame can be provided with a through hole, through which the second rotating shaft 24 passes and is rotatably connected.

[0037] Furthermore, it also includes a storage assembly 4, a mixing assembly 5, and a shotcrete machine 6. The mixing assembly 5 includes a stirrer 51, and the storage assembly 4 includes a material tank 41. The material tank 41 has a mixing chamber 411 inside. The stirrer 51 is installed on the material tank 41 and is used to stir the slurry located in the mixing chamber 411. The shotcrete machine 6 and the material tank 41 are installed on the top surface of the base plate 1. The material tank 41 is connected to the shotcrete machine 6, and the shotcrete machine 6 is connected to the spray gun 31. The mixing chamber 411 stores slurry. The stirrer 51 stirs the slurry in the mixing chamber 411 to prevent slurry sedimentation and stratification, improve the slurry fluidity, and ensure the uniformity of the slurry. Furthermore, the shotcrete machine 6 is used to provide power to transport the slurry in the mixing chamber 411 to the spray gun 31. In addition, the shotcrete machine 6 can be a pneumatic shotcrete machine or a shotcrete pump.

[0038] Furthermore, the stirring assembly 5 also includes a stirring driver 52, the stirrer 51 includes a stirring rod 511, the top surface of the material tank 41 is provided with a through hole extending to the stirring chamber 411, the stirring rod 511 is disposed through the through hole, the stirring driver 52 is connected to the top end of the stirring rod 511, and the stirring driver 52 is used to drive the stirring rod 511 to rotate; wherein, the stirring driver 52 drives the stirring rod 511 to rotate to agitate the slurry at various heights in the stirring chamber 411.

[0039] Furthermore, the stirrer 51 also includes a first stirring element 512 and a plurality of second stirring elements 513; the first stirring element 512 is disposed at the bottom end of the stirring rod 511, and the first stirring element 512 includes a plurality of first stirring columns 5121, which are arranged around the stirring rod 511. Each first stirring column 5121 includes a first column segment 51211, a second column segment 51212, a third column segment 51213, and a fourth column segment 51214 connected sequentially from near the stirring rod 511 to away from the stirring rod 511. The first column segments 51211 are arranged in parallel, the second column segments 51212 and the third column segments 51213 are arranged at an angle, and the fourth column segment 51214 is arranged vertically, with the top of the fourth column segment 51214 higher than any of the second stirring elements. 513; A plurality of second stirring elements 513 are spaced apart from the stirring rod 511 in a vertical direction and are all located above the first stirring element 512. Each second stirring element 513 includes a plurality of second stirring columns 5131, which are arranged around the stirring rod 511. Each second stirring column 5131 includes a fifth column segment 51311, a sixth column segment 51312, and a seventh column segment 51313 connected sequentially from near the stirring rod 511 to away from the stirring rod 511. The fifth column segment 51311 is arranged in parallel, and the sixth column segment 51312 and the seventh column segment 51313 are arranged at an angle. The second column segment 51212 and the sixth column segment 51312 are arranged in parallel, and the third column segment 51213 and the seventh column segment 51313 are arranged in parallel.

[0040] The first stirring element 512 and the second stirring element 513 are disposed on the stirring rod 511, which can effectively improve the stirring effect. When the stirring rod 511 rotates, the first stirring element 512 and each of the second stirring elements 513 can stir the slurry at different heights. Since the fourth column section 51214 extends vertically upward, the first stirring element 512 can also stir the slurry attached to the cavity wall of the stirring chamber 411.

[0041] Furthermore, the material storage assembly 4 also includes multiple support columns 42. The bottom surface of the material tank 41 is provided with a discharge opening that communicates with the mixing chamber 411. The shotcrete machine 6 is connected to the discharge opening. The top end of each support column 42 is connected to the bottom surface of the material tank 41, and the bottom end is connected to the top surface of the base plate 1, so that the slurry is discharged from the bottom of the material tank 41 to improve the smoothness of the discharge.

[0042] Furthermore, the bottom surface of the receiving cavity 221 is provided with a material gathering section 412 around the discharge opening. The height of the material gathering section 412 gradually decreases from its outer side to its inner side, so that the slurry in the mixing cavity 411 gathers towards the discharge opening, thereby further improving the smoothness of discharge. In addition, the material gathering section 412 can be an inclined surface, and the third column section 51213 and the material gathering section 412 can be adapted to each other, that is, the third column section 51213 and the material gathering section 412 are parallel in the cross-sectional view.

[0043] Furthermore, it also includes multiple switching valves 7 and multiple material storage components 4. The stirring component 5 also includes a third rotating shaft 53, a support plate 54, multiple first bevel gears 55 and multiple stirrers 51. Each stirrer 51 is installed on the material tank 41 corresponding to a material storage component 4. Each switching valve 7 is installed between the material tank 41 and the shotcrete machine 6. The stirring driver 52 is installed on the top surface of one of the material tanks 41. The support plate 54 is located on the top surface of the other material tanks 41. The support plate 54 has a support hole. The third rotating shaft 53 is horizontally arranged and connected to the stirring driver 52. The third rotating shaft 53 passes through and is rotatably connected to the support hole. Multiple first bevel gears 55 are fixedly arranged on the third rotating shaft 53. Each stirrer 51 also includes a second bevel gear 514. The second bevel gear 514 is fixedly arranged on the top end of the stirring rod 511. Each first bevel gear 55 is connected to the second bevel gear 514 corresponding to a first bevel gear 55.

[0044] The system includes multiple material storage components 4 to improve the continuity of the spraying device's operation. When the slurry in the mixing chamber 411 of one of the material tanks 41 is exhausted, the slurry from another material tank 41 can be used for spraying via the switch valve 7. During this period, the slurry can be replenished into the empty material tank 41, or multiple material tanks 41 can be used alternately to prevent the paint from settling in the material tanks 41. Furthermore, the stirring driver 52 can sequentially drive the third rotating shaft 53, the first bevel gear 55, the second bevel gear 514, and the stirring rod 511 to rotate, so that multiple stirring rods 511 can be driven simultaneously by one driver to stir the slurry in multiple mixing chambers 411, thereby reducing the complexity and weight of the spraying device. In addition, the support plate 54 is used to support the third rotating shaft 53 to improve its rotational stability.

[0045] Further, it further includes a plurality of rollers 9, and the plurality of rollers 9 are provided on the bottom surface of the bottom plate 1 so that the staff can push the spraying device.

[0046] Further, it further includes a handle 8. The handle 8 is provided on the top surface of the bottom plate 1, and the handle 8 is in a "U" - shaped structure to facilitate the staff to hold the handle 32 and push the spraying device.

[0047] Further, each driver can be a motor.

[0048] Further, fixedly setting and fixedly connecting refer to the relative position relationship of two components being fixed, including but not limited to being fixed by a connecting member, being fixed by welding, being fixed by an adhesive, being fixed by integral molding, being fixed by snap - connection.

[0049] Further, rotatably connecting and rotatably setting refer to the two connected components being able to rotate, including but not limited to being connected by a bearing, being connected by clearance fit.

[0050] Further, the connecting member includes but not limited to fasteners, straps, binding ropes, pneumatic connection elements, hydraulic connection elements, flange plates, magic tapes, buttons.

[0051] In summary, the embodiment of the present utility model provides a spraying device, and its technical effects are as follows:

[0052] In this spraying device, a first connecting shaft is rotatably connected to a first connecting frame 21 and fixedly connected to a second connecting frame 22. A second connecting shaft is rotatably connected to the second connecting frame 22 and fixedly connected to a mounting platform 27. This allows the mounting platform 27 to rotate when the first driver 25 drives the first rotating shaft 23 to rotate and the second driver 26 drives the second rotating shaft 24 to rotate. Furthermore, since there is an included angle between the first rotating shaft 23 and the second rotating shaft 24, when the first driver 25 and the second driver 26 drive them to rotate, the yaw and pitch angles of the mounting platform 27 and the spray gun 31 mounted on it can be adjusted. This allows the spray gun 31 to spray different positions in the vertical and horizontal directions, enabling the spray gun 31 mounted on the mounting platform 27 to perform comprehensive spraying of the tunnel. The handle 32 has a first magnetic attraction part 321 at the end away from the spray gun 31, and a second magnetic attraction part is provided on either the wall or the bottom of the mounting hole 271 of the mounting platform 27. When the handle 32 is inserted into the mounting hole 271, the first magnetic attraction part 321 and the second magnetic attraction part are magnetically connected, so that the handle 32 can be easily and relatively stably connected to the mounting platform 27. When the mounting platform 27 drives the spray gun 31 to rotate, the mounting platform 27 and the spray gun 31 can maintain a relative positional relationship, and the spray gun 31 is difficult to detach from the mounting hole 271. At the same time, the operator can also use a little more force to pull off the handle 32, making it convenient to hold the handle 32 for spraying. In summary, the spraying device of this utility model has a large spraying range, can spray the entire tunnel, and the spray gun 31 is difficult to fall off during spraying, resulting in high stability and accuracy of the spraying operation.

[0053] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A spray device, characterized in that The spraying device comprises a bottom plate (1), a rotating assembly (2) and a spraying assembly (3). The rotating assembly (2) comprises a first connecting frame (21), a second connecting frame (22), a first rotating shaft (23), a second rotating shaft (24), a first driver (25), a second driver (26) and a mounting table (27), the first connecting frame (21) is fixedly arranged on the top surface of the bottom plate (1), the first rotating shaft (23) is rotatably connected to the first connecting frame (21), the first driver (25) is connected to the first rotating shaft (23), the first driver (25) is used for driving the first rotating shaft (23) to rotate, the second connecting frame (22) is fixedly arranged on the first rotating shaft (23), one end of the second rotating shaft (24) is rotatably connected to the second connecting frame (22), and the other end is fixedly connected to one surface of the mounting table (27), the second driver (26) is connected to the second rotating shaft (24), and the second driver (26) is used for driving the second rotating shaft (24) to rotate, and the first rotating shaft (23) and the second rotating shaft (24) have an included angle therebetween. The spraying assembly (3) comprises a spray gun (31) and a handle (32), one end of the handle (32) is connected to the spray gun (31), the other end is provided with a first magnetic attraction part (321), the other surface of the mounting table (27) is provided with a mounting hole (271), the bottom and / or the wall of the mounting hole (271) is provided with a second magnetic attraction part, the handle (32) is inserted into the mounting hole (271), and the first magnetic attraction part (321) is magnetically connected to the second magnetic attraction part.

2. The spray device of claim 1, wherein, One end of the handle (32) connected to the spray gun (31) protrudes from the outer surface of the mounting table (27).

3. The spray device of claim 1, wherein, The first rotating shaft (23) is arranged horizontally, both ends of the first rotating shaft (23) are rotatably connected to the first connecting frame (21), the second rotating shaft (24) is arranged vertically, the bottom end of the second rotating shaft (24) is rotatably connected to the second connecting frame (22), and the top end is fixedly connected to the bottom surface of the mounting table (27), and the mounting hole (271) is arranged on the top surface of the mounting table (27).

4. The spray device of claim 1, wherein, The first connecting frame (21) comprises two side plates (211), the two side plates (211) are arranged on the top surface of the bottom plate (1) in a horizontal direction, both ends of the first rotating shaft (23) are rotatably connected to the two side plates (211) respectively, and the first driver (25) is mounted on the side surface of one side plate (211) away from the other side plate (211). The second connecting frame (22) is provided with an accommodating cavity (221) therein, and the second driver (26) is mounted in the accommodating cavity (221).

5. The spray device of claim 1, wherein, Also comprising a material storage assembly (4), a stirring assembly (5) and a spraying machine (6), the stirring assembly (5) comprising a stirrer (51), the material storage assembly (4) comprising a material bucket (41) with a stirring cavity (411) arranged therein, the stirrer (51) being arranged in the material bucket (41) and used for stirring slurry in the stirring cavity (411), the spraying machine (6) and the material bucket (41) being arranged on the top surface of the bottom plate (1), the material bucket (41) being connected to the spraying machine (6), and the spraying machine (6) being connected to the spray gun (31).

6. The spray device of claim 5, wherein, The stirring assembly (5) further comprises a stirring driver (52), the stirrer (51) comprising a stirring rod (511), the top surface of the material bucket (41) being provided with a through hole penetrating into the stirring cavity (411), the stirring rod (511) being arranged through the through hole, and the stirring driver (52) being connected to the top end of the stirring rod (511) and used for driving the stirring rod (511) to rotate.

7. The spray device of claim 6, wherein, The stirrer (51) further comprises a first stirring piece (512) and a plurality of second stirring pieces (513). The first stirring piece (512) is arranged at the bottom end of the stirring rod (511), the first stirring piece (512) comprising a plurality of first stirring columns (5121) arranged around the stirring rod (511), the first stirring column (5121) comprising a first column segment (51211), a second column segment (51212), a third column segment (51213) and a fourth column segment (51214) connected in sequence from the direction close to the stirring rod (511) to the direction away from the stirring rod (511), the first column segment (51211) being arranged in parallel, the second column segment (51212) and the third column segment (51213) being arranged in an inclined manner, and the fourth column segment (51214) being arranged vertically, the top end of the fourth column segment (51214) being higher than any of the second stirring pieces (513). The plurality of second stirring pieces (513) are arranged in a spaced manner along the up-down direction of the stirring rod (511) and are all arranged above the first stirring piece (512), the second stirring piece (513) comprising a plurality of second stirring columns (5131) arranged around the stirring rod (511), the second stirring column (5131) comprising a fifth column segment (51311), a sixth column segment (51312) and a seventh column segment (51313) connected in sequence from the direction close to the stirring rod (511) to the direction away from the stirring rod (511), the fifth column segment (51311) being arranged in parallel, and the sixth column segment (51312) and the seventh column segment (51313) being arranged in an inclined manner. The second column segment (51212) and the sixth column segment (51312) are arranged in parallel, and the third column segment (51213) and the seventh column segment (51313) are arranged in parallel.

8. The spray device of claim 5, wherein, The storage assembly (4) further comprises a plurality of support columns (42), the bottom surface of the hopper (41) is provided with a discharge opening communicated with the stirring cavity (411), the shotcrete machine (6) is connected to the discharge opening, the top end of each support column (42) is connected to the bottom surface of the hopper (41), and the bottom end is connected to the top surface of the bottom plate (1).

9. The spray device of claim 8, wherein, The bottom surface of the accommodating cavity (221) is annularly provided with a material gathering portion (412) around the discharge opening, and the height of the material gathering portion (412) gradually decreases from the outer side to the inner side.

10. The spray device of claim 6, wherein, Further comprising a plurality of switch valves (7) and a plurality of the storage assemblies (4), the stirring assembly (5) further comprises a third rotating shaft (53), a bearing plate (54), a plurality of first bevel gears (55) and a plurality of the stirrers (51), the stirrer (51) is installed in the hopper (41) one by one, the switch valve (7) is installed between the hopper (41) and the shotcrete machine (6), the stirring driver (52) is installed on the top surface of one of the hoppers (41), the bearing plate (54) is arranged on the top surface of the other hoppers (41), the bearing plate (54) is provided with a bearing hole, the third rotating shaft (53) is horizontally arranged and connected to the stirring driver (52), the third rotating shaft (53) penetrates and is rotationally connected to the bearing hole, a plurality of the first bevel gears (55) are fixedly arranged on the third rotating shaft (53), the stirrer (51) further comprises a second bevel gear (514), the second bevel gear (514) is fixedly arranged on the top end of the stirring rod (511), and the first bevel gear (55) is connected to the second bevel gear (514) one by one.

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