Mechanical spraying equipment for concrete construction and construction method thereof

Abstract

The present invention discloses a mechanical spraying device for concrete construction and a construction method thereof, specifically relating to the field of concrete spraying machines. The mechanical spraying device for concrete construction includes a preparation mechanism, a delivery pipe is provided at the output end of the preparation mechanism, a nozzle is installed at the output end of the delivery pipe, a spraying mechanism is provided at the output end of the delivery pipe, and the spraying mechanism is located on a construction platform, and a mounting seat is installed on the spraying mechanism; a guide rail is installed between the spraying mechanism and the mounting seat, an adjustment block is installed on the mounting seat, and the adjustment block is fixed to the guide rail by bolts; a buffer sleeve is rotatably installed on the mounting seat. The present invention provides a guide rail and fixes the mounting seat to the end of the guide rail farthest from the construction surface through the adjustment block, thereby increasing the distance between the nozzle and the construction surface, thereby reducing the influence of the recoil force. In combination with the buffer sleeve to buffer the nozzle, the recoil force when the nozzle is located at the bottom of the slope is further overcome.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete spraying machines, and more particularly to a mechanical spraying device for concrete construction and a construction method thereof. Background Art

[0002] Concrete spraying equipment is a mechanical equipment that uses compressed air to form a suspended airflow of concrete in a certain ratio and sprays it onto the surface to form a dense concrete layer to achieve the purpose of support. The concrete mixture is sprayed directly onto the surface of the building or structure to reinforce the building surface or form a new structure. According to the different methods of adding water to the concrete mixture, concrete spraying equipment can be divided into three types: dry type, wet type and semi-wet (humid) type. Since dry and semi-wet concrete spraying equipment produce a lot of dust during construction, when carrying out concrete spraying construction on urban buildings with high dust prevention requirements, in order to reduce dust pollution and dust prevention costs, wet concrete spraying equipment is generally used for wet operations.

[0003] The existing concrete wet spraying equipment has the advantages of efficient and environmentally friendly construction, is small in size and easy to move. The main structure of the rotor-type concrete wet spraying equipment includes a hopper, a conveying system (pump conveying or screw conveying), a compressed air system, a nozzle and an accelerator adding device. The construction process mainly includes: ready-mixed concrete wet material enters the hopper, the conveying system pumps the concrete wet material, compressed air is injected, the accelerator is mixed at the nozzle and sprayed onto the construction surface at high speed.

[0004] In the foundation pit slope support construction, when the foundation pit slope is a multi-level slope, taking the two-level slope as an example, a horizontal construction platform is provided in the middle of the two levels of slope, which is used to intercept water, buffer loads and provide a construction channel. In the existing technology, when performing shotcrete construction on the first-level slope (the slope on the upper layer), a person stands on the construction platform and holds a nozzle to spray wet concrete from top to bottom. Since the construction surface is a slope surface and a top-to-bottom spraying path is adopted, the distance from the nozzle to the construction surface of the wet concrete is gradually reduced, resulting in an increasing reaction force at the nozzle. When spraying wet concrete at the bottom of the slope, the danger of workers standing on the construction platform to spray wet concrete is increased. Although the reaction force can be reduced by adjusting and reducing the power of the conveying system, the spraying time needs to be extended, and multiple adjustments need to be made during multi-stage construction, which affects construction efficiency. Therefore, it is necessary to invent a mechanical spraying equipment for concrete construction that can overcome the recoil force at the bottom of the slope on a construction platform with multi-level slope. Summary of the Invention

[0005] The present invention provides a mechanical spraying device for concrete construction and a construction method thereof, aiming to solve the problem that when existing mechanical spraying equipment for concrete construction sprays wet concrete at the bottom of a slope, it increases the risk for workers standing on a construction platform to spray wet concrete.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mechanical spraying equipment for concrete construction, comprising a preparation mechanism, a delivery pipe is provided at the output end of the preparation mechanism, a nozzle is installed at the output end of the delivery pipe, a spraying mechanism is provided at the output end of the delivery pipe, and the spraying mechanism is located on the construction platform, and a mounting seat is installed on the spraying mechanism; a guide rail is installed between the spraying mechanism and the mounting seat, an adjusting block is installed on the mounting seat, and the adjusting block is fixed to the guide rail by bolts; a buffer sleeve is rotatably installed on the mounting seat, a buffer assembly is provided inside the buffer sleeve, a buffer column is slidably connected to one end of the buffer sleeve, and the buffer column and the buffer assembly are fixedly connected, a fixed seat is fixedly provided at one end of the buffer column, the nozzle is installed on the fixed seat, and the fixed seat is close to the construction surface of the first-level slope; the mounting seat is kept away from the construction surface of the first-level slope by the guide rail, and the recoil force between the nozzle and the construction surface of the first-level slope is buffered by the buffer sleeve.

[0007] In a preferred embodiment, the buffer assembly includes a spring column, and the spring column is fixedly arranged at one end of the buffer column. A damping chamber is opened inside the buffer sleeve, and a perforated plate is slidably arranged inside the damping chamber. The spring column is fixedly connected to the perforated plate.

[0008] In a preferred embodiment, a No. 3 cross frame is installed on the mounting seat, and a guide seat is installed on the No. 3 cross frame. A baffle is rotatably connected between the guide seat and the fixed seat. A guide groove is provided on the top of the guide seat, and a guide block is slidingly provided inside the guide groove, and the guide block is rotatably connected to one end of the baffle.

[0009] In a preferred embodiment, an extension seat is installed on one side of the spraying mechanism, and a side support mechanism is installed on the extension seat. The side support mechanism includes support wheels, and the support wheels are rolled on the secondary slope.

[0010] In a preferred embodiment, the side support mechanism includes a connecting block, a telescopic column member is mounted on the connecting block, the bottom end of the telescopic column member is rotatably connected to a wheel frame via a hinge plate, and the support wheel is rotatably mounted on the wheel frame.

[0011] In a preferred embodiment, the preparation mechanism includes a preparation vehicle body, a mixing seat is installed on the preparation vehicle body, a hopper is provided at the input end of the mixing seat, a control box is provided on one side of the mixing seat, an air compressor pipeline is installed on the preparation vehicle body, and an accelerator nozzle is opened on the nozzle, and the accelerator nozzle is used to transport the accelerator into the nozzle.

[0012] In a preferred embodiment, the spraying mechanism includes a spraying vehicle body, a pillow block is installed on the spraying vehicle body, a first linear drive is installed on the pillow block, a control box 2 is installed at one end of the first linear drive, and a handle is fixed at one end of the spraying vehicle body.

[0013] In a preferred embodiment, a No. 1 cross frame and a No. 2 cross frame are installed on the mounting seat, and the No. 2 cross frame is located below the No. 1 cross frame. A second linear drive is installed on the No. 1 cross frame, and the output end of the second linear drive is rotatably connected to the buffer sleeve, and the end of the buffer sleeve away from the fixed seat is rotatably connected to the No. 2 cross frame.

[0014] In a preferred embodiment, a movable sleeve is installed on the fixed seat, a swing opening is opened inside the fixed seat, one end of the movable sleeve is rotatably connected to the inner wall of the swing opening, the nozzle is fixed inside the movable sleeve, a drive shaft is rotatably provided on the fixed seat, and the drive shaft is fixedly connected to one end of the movable sleeve.

[0015] The present invention also provides a construction method of a mechanical spraying device for concrete construction, comprising the following steps:

[0016] S1: Fix the mounting base to the end of the guide rail farthest from the construction surface by adjusting the block to increase the distance between the nozzle and the construction surface;

[0017] S2: The baffle is driven to tilt upward by the fixed seat, and the guide groove moves from one end of the guide block to the other end. The inclined baffle can be blocked between the buffer column and the construction surface;

[0018] S3: The extension seat is arranged perpendicularly to the side support mechanism. The extension seat is arranged on the side of the ejection mechanism away from the first-level slope and is supported from the side by the side support mechanism.

[0019] S4: The wet concrete material enters from the hopper and is pressurized by air through the air compressor pipeline inside the mixing seat, so that the high-pressure wet concrete material is discharged from the conveying pipe;

[0020] S5: The first linear actuator drives the guide rail to move in a lateral circular motion, adapting to the left and right swinging motion of the handheld device;

[0021] S6: The buffer sleeve is driven by the second linear actuator to rotate around the connection point between the second horizontal frame and the second horizontal frame to adapt to the manual up and down swing;

[0022] S7: The movable sleeve drives the nozzle to swing. On the basis of the first linear drive, the spray range of the nozzle is increased. The accelerator pipe mouth is connected to the accelerator pipe to transport the accelerator into the nozzle. The high-pressure concrete wet material is mixed with the accelerator and then sprayed onto the construction surface through the nozzle.

[0023] The beneficial effects of the present invention are:

[0024] The present invention sets a guide rail and fixes the mounting seat at the end of the guide rail farthest from the construction surface through an adjusting block, so that the distance between the nozzle and the construction surface is increased, thereby reducing the influence of the recoil force. Combined with the buffer sleeve to buffer the nozzle, the recoil force when the nozzle is at the bottom of the slope is further overcome.

[0025] The present invention drives the baffle to tilt upward through the fixed seat, and the guide groove moves from one end of the guide block to the other end. The inclined baffle can be blocked between the buffer column and the construction surface, preventing wet concrete from splashing on the surface of the buffer column and affecting the sliding of the buffer column inside the buffer sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 It is a schematic diagram of the three-dimensional structure of the preparation mechanism of the present invention.

[0028] Figure 3 It is a schematic diagram of the end structure of the injection mechanism of the present invention.

[0029] Figure 4 It is a schematic diagram of the three-dimensional structure of the injection vehicle body of the present invention.

[0030] Figure 5 Schematic diagram of the installation of the mounting base of the present invention.

[0031] Figure 6 It is a schematic diagram of the three-dimensional structure of the mounting base of the present invention.

[0032] Figure 7 This is a schematic diagram of the installation of the buffer sleeve of the present invention.

[0033] Figure 8 It is a schematic diagram of the side structure of the mounting base of the present invention.

[0034] Figure 9 It is a schematic diagram of the three-dimensional structure of the side support mechanism of the present invention.

[0035] Figure 10 It is a schematic top view of the cross-sectional structure of the buffer sleeve of the present invention.

[0036] Figure 11 It is a schematic side view of the cross-sectional structure of the guide seat of the present invention.

[0037] Figure 12 It is a schematic flow chart of the construction method of the present invention.

[0038] The accompanying drawings are marked as follows: 1. Preparation mechanism; 11. Preparation vehicle body; 12. Mixing seat; 13. Hopper; 14. Control box 1; 15. Air compressor pipeline; 2. Delivery pipe; 21. Nozzle; 22. Accelerator nozzle; 3. Spraying mechanism; 31. Spraying vehicle body; 32. Pillow block; 33. First linear drive; 34. Control box 2; 35. Handlebar; 4. Mounting seat; 41. Guide rail; 42. Adjustment block; 43. No. 1 cross frame; 44. No. 2 cross frame; 45. No. 3 cross frame No. cross frame; 46, second linear drive; 5, extension seat; 6, side support mechanism; 61, connecting block; 62, telescopic column member; 63, wheel frame; 64, hinged plate; 65, support wheel; 7, buffer sleeve; 71, buffer column; 711, spring column; 712, damping chamber; 713, perforated plate; 72, fixed seat; 73, movable sleeve; 74, swing mouth; 75, drive shaft; 8, guide seat; 81, baffle; 82, guide groove; 83, guide block. DETAILED DESCRIPTION

[0039] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0040] Refer to the instruction manual Figures 1 to 11 , a mechanical spraying equipment for concrete construction, including a preparation mechanism 1, a delivery pipe 2 is provided at the output end of the preparation mechanism 1, a nozzle 21 is installed at the output end of the delivery pipe 2, a spraying mechanism 3 is provided at the output end of the delivery pipe 2, and the spraying mechanism 3 is located on the construction platform, and a mounting seat 4 is installed on the spraying mechanism 3; a guide rail 41 is installed between the spraying mechanism 3 and the mounting seat 4, an adjusting block 42 is installed on the mounting seat 4, and the adjusting block 42 is fixed to the guide rail 41 by bolts; a buffer sleeve 7 is rotatably installed on the mounting seat 4, a buffer assembly is provided inside the buffer sleeve 7, one end of the buffer sleeve 7 is slidably connected with a buffer column 71, and the buffer column 71 is fixedly connected to the buffer assembly, and one end of the buffer column 71 is fixedly provided with a fixed seat 72, the nozzle 21 is installed on the fixed seat 72, and the fixed seat 72 is close to the construction surface of the first-level slope; the mounting seat 4 is kept away from the construction surface of the first-level slope by the guide rail 41, and the recoil force between the nozzle 21 and the construction surface of the first-level slope is buffered by the buffer sleeve 7.

[0041] It should be noted that, as needed, the length of the guide rail 41 can be set to be greater than the width of the construction platform. The adjustment block 42 is tightened and positioned on the guide rail 41 by several sets of bolts. One end of the buffer column 71 is slidably arranged inside the buffer sleeve 7. Taking the injection mechanism 3 as a reference, the length of one end of the guide rail 41 close to the nozzle 21 is smaller than the length of the other end, that is, the adjustment distance of the mounting seat 4 away from the construction surface is not affected by the width of the injection mechanism 3.

[0042] In this embodiment, the implementation scenario is specifically as follows: the construction scenario is a multi-level slope, and the preparation mechanism 1 is set on the ground to facilitate pouring wet concrete from a pump truck into the preparation mechanism 1. The spraying mechanism 3 replaces the manual clamping nozzle 21. The spraying mechanism 3 is placed on the construction platform to spray wet concrete on the construction surface of the first-level slope. In order to reduce the recoil force between the nozzle 21 and the construction surface of the first-level slope when it is at the bottom of the slope, the spraying mechanism 3 is as far away from the construction surface as possible. However, due to the influence of the width of the construction platform, the distance between the nozzle 21 and the construction surface is limited. In this embodiment, a guide rail 41 is set, and the mounting seat 4 is fixed to the end of the guide rail 41 farthest from the construction surface by an adjusting block 42, so that the distance between the nozzle 21 and the construction surface is increased, thereby reducing the influence of the recoil force, and then the buffer sleeve 7 is used to buffer the nozzle 21 to further overcome the recoil force when the nozzle 21 is at the bottom of the slope.

[0043] Furthermore, the buffer assembly includes a spring column 711, and the spring column 711 is fixedly arranged at one end of the buffer column 71, a damping chamber 712 is opened inside the buffer sleeve 7, a perforated plate 713 is slidably provided inside the damping chamber 712, and the spring column 711 is fixedly connected to the perforated plate 713.

[0044] It should be noted that the spring column 711 includes a central column and a spring sleeve. The spring sleeve is arranged on the outside of the central column. The spring sleeve is arranged on the outside of the buffer column 71 and one end of the damping chamber 712. The central column passes through the damping chamber 712 and is connected to the perforated plate 713. The damping fluid in the damping chamber 712 is provided with a through hole inside the perforated plate 713. The damping fluid passes through the through hole and flows on both sides of the perforated plate 713, cooperating with the spring sleeve to play a buffering role.

[0045] Furthermore, a third cross frame 45 is installed on the mounting seat 4, and a guide seat 8 is installed on the third cross frame 45. A baffle 81 is rotatably connected between the guide seat 8 and the fixed seat 72. A guide groove 82 is provided on the top of the guide seat 8, and a guide block 83 is slidingly provided inside the guide groove 82, and the guide block 83 is rotatably connected to one end of the baffle 81.

[0046] It should be noted that the cross-sections of the guide groove 82 and the guide block 83 are both T-shaped. When the buffer sleeve 7 tilts upward, the baffle 81 is driven to tilt upward through the fixed seat 72, and the guide groove 82 moves from one end of the guide block 83 to the other end. The inclined baffle 81 can be blocked between the buffer column 71 and the construction surface to prevent wet concrete from splashing on the surface of the buffer column 71 and affecting the sliding of the buffer column 71 inside the buffer sleeve 7.

[0047] Furthermore, an extension seat 5 is installed on one side of the injection mechanism 3, and a side support mechanism 6 is installed on the extension seat 5. The side support mechanism 6 includes a support wheel 65, and the support wheel 65 is rolled on the secondary slope.

[0048] It should be noted that the extension seat 5 is arranged perpendicular to the side support mechanism 6. The extension seat 5 is arranged on the side of the injection mechanism 3 away from the first-level slope, and is supported from the side by the side support mechanism 6 to prevent the injection mechanism 3 from tipping over.

[0049] Furthermore, the side support mechanism 6 includes a connecting block 61 , on which a telescopic column member 62 is mounted. The bottom end of the telescopic column member 62 is rotatably connected to a wheel frame 63 via a hinge plate 64 , and a support wheel 65 is rotatably mounted on the wheel frame 63 .

[0050] It should be noted that the connecting block 61 is fixed to the extension seat 5 by screws, the angle between the telescopic column member 62 and the wheel frame 63 is less than 45 degrees, and the two ends of the hinged plate 64 are rotatably connected to the telescopic column member 62 and the wheel frame 63 respectively. The hinged plate 64 can change the angle between the telescopic column member 62 and the wheel frame 63 between 5 degrees and 45 degrees to adapt to uneven slopes.

[0051] Furthermore, the preparation mechanism 1 includes a preparation vehicle body 11, a mixing seat 12 is installed on the preparation vehicle body 11, a hopper 13 is provided at the input end of the mixing seat 12, a control box 14 is provided on one side of the mixing seat 12, and an air compressor pipeline 15 is installed on the preparation vehicle body 11.

[0052] It should be noted that the wet concrete material enters from the hopper 13 and is pressurized by air through the air compressor pipeline 15 inside the mixing seat 12, so that the high-pressure wet concrete material is discharged from the conveying pipe 2.

[0053] Furthermore, the spraying mechanism 3 includes a spraying vehicle body 31, a pillow block 32 is installed on the spraying vehicle body 31, a first linear drive 33 is installed on the pillow block 32, a control box 2 34 is installed at one end of the first linear drive 33, and a handlebar 35 is fixed at one end of the spraying vehicle body 31.

[0054] It should be noted that the first linear drive 33 and the guide rail 41 are arranged in a cross shape, and the first linear drive 33 drives the guide rail 41 to move in a horizontal circular motion to adapt to the manual hand-held left and right swinging action.

[0055] Furthermore, a No. 1 cross frame 43 and a No. 2 cross frame 44 are installed on the mounting seat 4, and the No. 2 cross frame 44 is located below the No. 1 cross frame 43. A second linear driver 46 is installed on the No. 1 cross frame 43. The output end of the second linear driver 46 is rotatably connected to the buffer sleeve 7, and the end of the buffer sleeve 7 away from the fixed seat 72 is rotatably connected to the No. 2 cross frame 44.

[0056] It should be noted that, through the driving of the second linear actuator 46 , the buffer sleeve 7 is rotated around the connection point between the buffer sleeve 7 and the second horizontal frame 44 as the center point to adapt to manual up and down swinging.

[0057] Furthermore, a movable sleeve 73 is installed on the fixed seat 72, and a swinging opening 74 is opened inside the fixed seat 72. One end of the movable sleeve 73 is rotatably connected to the inner wall of the swinging opening 74. The nozzle 21 is fixed inside the movable sleeve 73. A drive shaft 75 is rotatably provided on the fixed seat 72, and the drive shaft 75 is fixedly connected to one end of the movable sleeve 73.

[0058] It should be noted that the drive shaft 75 is manually operated or driven by a motor, so that the movable sleeve 73 drives the nozzle 21 to swing, thereby increasing the spray range of the nozzle 21 on the basis of the first linear drive 33 .

[0059] Furthermore, the nozzle 21 is provided with an accelerating agent nozzle 22 , which is used to transport the accelerating agent into the nozzle 21 .

[0060] It should be noted that the accelerating agent pipe port 22 is connected to the accelerating agent pipe to transport the accelerating agent into the nozzle 21 .

[0061] Refer to the instruction manual Figure 12 The present invention also provides a construction method of a mechanical spraying device for concrete construction, comprising the following steps:

[0062] S1: Fix the mounting base 4 to the end of the guide rail 41 farthest from the construction surface by adjusting the block 42 to increase the distance between the nozzle 21 and the construction surface;

[0063] S2: The baffle 81 is driven to tilt upward by the fixing seat 72, and the guide groove 82 moves from one end of the guide block 83 to the other end. The inclined baffle 81 can be blocked between the buffer column 71 and the construction surface;

[0064] S3: The extension seat 5 is arranged perpendicularly to the side support mechanism 6. The extension seat 5 is arranged on the side of the injection mechanism 3 away from the first-level slope and is supported from the side by the side support mechanism 6;

[0065] S4: The wet concrete material enters the hopper 13 and is pressurized by air through the air compressor pipe 15 inside the mixing seat 12, so that the high-pressure wet concrete material is discharged from the conveying pipe 2;

[0066] S5: The first linear actuator 33 drives the guide rail 41 to move in a lateral circular motion, adapting to the left-right swinging motion of a human hand;

[0067] S6: The second linear actuator 46 is used to drive the buffer sleeve 7 to rotate around the connection point with the second cross frame 44 to adapt to manual up and down swinging;

[0068] S7: The movable sleeve 73 drives the nozzle 21 to swing. On the basis of the first linear drive 33, the spraying range of the nozzle 21 is increased. The accelerator pipe port 22 is connected to the accelerator pipe to transport the accelerator into the nozzle 21. The high-pressure concrete wet material is mixed with the accelerator and then sprayed onto the construction surface through the nozzle 21.

[0069] The above embodiments merely illustrate several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the scope of the present invention, all of which fall within the scope of protection of the present invention.

Claims

1. A mechanical spraying device for concrete construction, comprising a preparation mechanism (1), wherein the output end of the preparation mechanism (1) is provided with a delivery pipe (2), and the output end of the delivery pipe (2) is provided with a nozzle (21), characterized in that: The output end of the delivery pipe (2) is provided with a spraying mechanism (3), and the spraying mechanism (3) is located on the construction platform, and a mounting seat (4) is installed on the spraying mechanism (3); A guide rail (41) is installed between the injection mechanism (3) and the mounting seat (4), an adjustment block (42) is installed on the mounting seat (4), and the adjustment block (42) is fixed to the guide rail (41) by bolts; A buffer sleeve (7) is rotatably mounted on the mounting seat (4), a buffer assembly is provided inside the buffer sleeve (7), one end of the buffer sleeve (7) is slidably connected to a buffer column (71), and the buffer column (71) and the buffer assembly are fixedly connected, one end of the buffer column (71) is fixedly provided with a fixed seat (72), the nozzle (21) is mounted on the fixed seat (72), and the fixed seat (72) is close to the construction surface of the first-level slope; The guide rail (41) is used to keep the mounting seat (4) away from the construction surface of the first-level slope, and the buffer sleeve (7) is used to buffer the recoil force between the nozzle (21) and the construction surface of the first-level slope; A third cross frame (45) is mounted on the mounting seat (4), a guide seat (8) is mounted on the third cross frame (45), a baffle (81) is rotatably connected between the guide seat (8) and the fixed seat (72), a guide groove (82) is provided on the top of the guide seat (8), a guide block (83) is slidably provided inside the guide groove (82), and the guide block (83) is rotatably connected to one end of the baffle (81); A first cross frame (43) and a second cross frame (44) are mounted on the mounting seat (4), and the second cross frame (44) is located below the first cross frame (43). A second linear drive (46) is mounted on the first cross frame (43), and an output end of the second linear drive (46) is rotatably connected to a buffer sleeve (7). An end of the buffer sleeve (7) away from the fixed seat (72) is rotatably connected to the second cross frame (44). The length of the guide rail (41) is greater than the width of the construction platform.

2. A mechanical spraying equipment for concrete construction according to claim 1, characterized in that: The buffer assembly comprises a spring column (711), and the spring column (711) is fixedly arranged at one end of the buffer column (71); a damping chamber (712) is provided inside the buffer sleeve (7); a perforated plate (713) is slidably provided inside the damping chamber (712); and the spring column (711) is fixedly connected to the perforated plate (713).

3. A mechanical spraying equipment for concrete construction according to claim 2, characterized in that: An extension seat (5) is installed on one side of the ejection mechanism (3), and a side support mechanism (6) is installed on the extension seat (5). The side support mechanism (6) includes a support wheel (65), and the support wheel (65) is rollingly arranged on the secondary slope.

4. A mechanical spraying equipment for concrete construction according to claim 3, characterized in that: The side support mechanism (6) comprises a connecting block (61), a telescopic column component (62) is mounted on the connecting block (61), the bottom end of the telescopic column component (62) is rotatably connected to a wheel frame (63) via a hinge plate (64), and the support wheel (65) is rotatably mounted on the wheel frame (63).

5. The mechanical spraying equipment for concrete construction according to claim 4, characterized in that: The preparation mechanism (1) includes a preparation vehicle body (11), a mixing seat (12) is installed on the preparation vehicle body (11), a hopper (13) is provided at the input end of the mixing seat (12), a control box (14) is provided on one side of the mixing seat (12), an air pressure pipeline (15) is installed on the preparation vehicle body (11), and an accelerator nozzle (22) is provided on the nozzle (21), and the accelerator nozzle (22) is used to transport the accelerator into the nozzle (21).

6. The mechanical spraying equipment for concrete construction according to claim 5, characterized in that: The spray mechanism (3) includes a spray vehicle body (31), a pillow block (32) is mounted on the spray vehicle body (31), a first linear drive (33) is mounted on the pillow block (32), a control box 2 (34) is mounted on one end of the first linear drive (33), and a handlebar (35) is fixedly mounted on one end of the spray vehicle body (31).

7. The mechanical spraying equipment for concrete construction according to claim 6, characterized in that: A movable sleeve (73) is mounted on the fixed seat (72), a swing opening (74) is provided inside the fixed seat (72), one end of the movable sleeve (73) is rotatably connected to the inner wall of the swing opening (74), the nozzle (21) is fixedly arranged inside the movable sleeve (73), a drive shaft (75) is rotatably provided on the fixed seat (72), and the drive shaft (75) is fixedly connected to one end of the movable sleeve (73).

8. A construction method of the mechanical spraying equipment for concrete construction as claimed in claim 7, characterized in that: The steps include: S1: Fixing the mounting seat (4) to the end of the guide rail (41) farthest from the construction surface by means of the adjusting block (42) increases the distance between the nozzle (21) and the construction surface; S2: The baffle (81) is driven to tilt upward by the fixing seat (72), and the guide groove (82) moves from one end to the other end of the guide block (83), and the inclined baffle (81) can be blocked between the buffer column (71) and the construction surface; S3: The extension seat (5) is arranged vertically with the side support mechanism (6), and the extension seat (5) is arranged on the side of the injection mechanism (3) away from the first-level slope, and is supported from the side by the side support mechanism (6); S4: The wet concrete material enters from the hopper (13) and is pressurized by air through the air compressor pipe (15) inside the mixing seat (12), so that the high-pressure wet concrete material is discharged from the conveying pipe (2); S5: The first linear actuator (33) drives the guide rail (41) to move in a lateral circular motion, adapting to the left-right swinging motion of the handheld device; S6: The buffer sleeve (7) is driven by the second linear actuator (46) to rotate around the connection point between the buffer sleeve (7) and the second cross frame (44) to adapt to manual up and down swinging; S7: The movable sleeve (73) drives the nozzle (21) to swing. On the basis of the first linear drive (33), the spray range of the nozzle (21) is increased. The accelerator pipe opening (22) is connected to the accelerator pipe to transport the accelerator into the nozzle (21). The high-pressure concrete wet material is mixed with the accelerator and then sprayed onto the construction surface through the nozzle (21).

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