A shotcrete construction device and method

Abstract

This invention discloses a shotcrete construction device and method, belonging to the field of shotcrete construction technology. The shotcrete construction device includes a pole with a rotating ball connected to it. The rotating ball is equipped with an installation component for mounting a shotcrete pipe, and the pole is equipped with a stabilizing component for maintaining its stability. This application has the effect of facilitating the movement of the shotcrete pipe and shotcreting concrete in confined construction spaces. During construction, the shotcrete pipe is fixedly installed by the installation component, making the shotcrete pipe and the rotating ball relatively fixed. The stabilizing component keeps the pole stable. Because the pole occupies little space, moving the pole brings the shotcrete pipe to a confined construction position. The pole supports the shotcrete pipe through the rotating ball. Adjusting the rotation angle of the rotating ball allows the shotcrete pipe to be aimed at different directions for spraying, thus facilitating the movement of the shotcrete pipe for shotcreting concrete in confined construction spaces.

Description

Technical Field

[0001] This application relates to the field of shotcrete construction technology, and in particular to a shotcrete construction device and method. Background Technology

[0002] Shotcrete construction refers to the process of applying fine aggregate concrete by spraying it with a pressure spray gun. It is commonly used in the construction of tunnel linings, walls, ceilings, etc.

[0003] In related technologies, such as Chinese patent document CN218407459U, a shotcrete construction device is disclosed, including a support plate and a spray gun body. The support plate is provided with a limiting plate and a limiting seat, which are fixed together by screws. In use, the spray gun body is installed between the limiting plate and the limiting seat to support the spray gun body.

[0004] Regarding the aforementioned technologies, due to the large size of the support plate and the fact that the ground of the construction site is usually covered with a lot of debris, the support plate is not easy to move when spraying is required in a confined space. Summary of the Invention

[0005] To facilitate the movement of the spraying pipe and the spraying of concrete in confined construction spaces, this application provides a sprayed concrete construction device and method.

[0006] Firstly, the shotcrete construction device provided in this application adopts the following technical solution:

[0007] A shotcrete construction device includes a pole with a rotating ball connected to it. The rotating ball is equipped with an installation assembly for mounting a spraying pipe, and the pole is equipped with a stabilizing assembly for keeping the pole stable.

[0008] Optionally, the upright is provided with a mounting block, and the rotating ball is connected to the mounting block.

[0009] Optionally, the stabilizing component includes a placement plate disposed at the lower end of the upright, a balance ring sleeved on the upright, two arc-shaped counterweights sliding relative to each other within the balance ring, a reset component disposed within the balance ring, and a transmission component disposed on the mounting block. The mounting block is slidably disposed above the balance ring, and the sliding direction of the mounting block is parallel to the length direction of the upright. The arc-shaped counterweights move closer to or further away from each other along the circumference of the balance ring. The mounting block is located between the two arc-shaped counterweights. The side of the arc-shaped counterweights closest to the mounting block is an inclined surface, and the inclined surface slopes downward on the side closest to the mounting block. The sides of the two arc-shaped counterweights closest to the mounting block are interlocked. The reset component is used to push the two arc-shaped counterweights closer to each other, and the transmission component is used to press the two arc-shaped counterweights away from each other when the mounting block moves towards the balance ring.

[0010] Optionally, the reset component includes a first spring for pushing the two arc-shaped counterweights closer to each other, with one end of the first spring disposed inside the balance ring and the other end disposed on the arc-shaped counterweight.

[0011] Optionally, the transmission component includes a push rod disposed on the mounting block, the push rod slidingly passing through the balance ring, and the end of the push rod away from the mounting block abutting against the inclined surfaces of two circular arc counterweights.

[0012] Optionally, the balance ring has two clamping plates that slide relative to each other, the sliding direction of the clamping plates is perpendicular to the sliding direction of the mounting block, the push rod is located between the two clamping plates, and the balance ring is provided with an adjusting member for driving the two clamping plates closer to or further apart from each other.

[0013] Optionally, the adjusting component includes a first bidirectional screw rotatably mounted on a balance ring, the rotation axis of the first bidirectional screw being parallel to the sliding direction of the clamping plates, and the two clamping plates being threadedly connected to the two ends of the first bidirectional screw.

[0014] Optionally, the rotating ball has a through hole for the injection pipe to pass through. The through hole is opened along the center line of the rotating ball. The mounting assembly includes two mounting plates that slide relative to each other on the rotating ball and a sliding member disposed on the rotating ball. The two mounting plates are located on opposite sides of the through hole. The sliding direction of the mounting plates is perpendicular to the extension direction of the through hole. The sliding member is used to drive the two mounting plates closer to or further away from each other.

[0015] Optionally, the sliding component includes a second bidirectional screw rotatably mounted on a rotating ball, the rotation axis of the second bidirectional screw being parallel to the sliding direction of the mounting plate, and the two mounting plates being threadedly connected to the two ends of the second bidirectional screw.

[0016] Secondly, the sprayed concrete construction method provided in this application adopts the following technical solution:

[0017] A method for applying shotcrete, using the shotcrete application device as described, includes the following steps:

[0018] Place the poles at the required locations on the construction site;

[0019] The injection nozzle is mounted and secured to the rotating ball using the mounting assembly.

[0020] The pole is kept stable by using stabilizing components;

[0021] Turn on the spray pipe to spray concrete.

[0022] In summary, this application includes the following beneficial technical effects: During construction, the spraying pipe is fixedly installed by the installation components, so that the spraying pipe and the rotating ball are relatively fixed. The stabilizing components keep the upright stable. Since the upright occupies little space, moving the upright can move the spraying pipe to a narrow construction position. The upright supports the spraying pipe through the rotating ball. Adjusting the rotation angle of the rotating ball allows the spraying pipe to spray in different directions, thereby facilitating the movement of the spraying pipe to spray concrete in narrow construction spaces. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0024] Figure 2 yes Figure 1 Enlarged view of section A;

[0025] Figure 3 This is a cross-sectional view of the overall structure of the rotating ball according to an embodiment of this application;

[0026] Figure 4 This is a cross-sectional view of the overall structure of the balance ring in an embodiment of this application.

[0027] The components are as follows: 1. Upright pole; 2. Rotating ball; 3. Mounting assembly; 31. Mounting plate; 32. Sliding component; 321. Second bidirectional screw; 4. Mounting block; 5. Placement plate; 6. Balance ring; 7. Arc counterweight; 8. First spring; 9. Push rod; 10. Clamping plate; 11. First bidirectional screw; 12. Through hole; 13. Fixing plate; 14. T-block; 15. T-slot; 16. Handle; 17. Operating ring; 18. Caster wheel; 19. Telescopic rod; 20. Sliding cavity; 21. Divider plate; 22. Slot; 23. Through hole; 24. Support plate; 25. Groove; 26. Protrusion; 27. Fitting groove; 28. Operating handle; 29. ​​Fixing groove. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0029] This application discloses a shotcrete construction apparatus. (Refer to...) Figure 1 and Figure 2 The shotcrete construction device includes a pole 1, which is set vertically and has a circular cross-section. A rotating ball 2 is connected to the pole 1. A through hole 12 for the shotcrete pipe to pass through is opened on the rotating ball 2. The through hole 12 is opened along the central axis of the rotating ball 2. An installation component 3 for installing the shotcrete pipe is provided on the rotating ball 2. A stabilizing component for keeping the pole 1 stable is provided on the pole 1.

[0030] During construction, the spraying pipe is passed through the through hole 12, and then the spraying pipe is fixed by the mounting component 3, so that the spraying pipe is fixed relative to the rotating ball 2. Then, the stabilizing component is used to keep the upright 1 stable. Since the upright 1 occupies little space and is easy to move, the spraying pipe is moved to a narrow construction position by moving the upright 1. At this time, the upright 1 supports the spraying pipe by the rotating ball 2. Then, the rotation angle of the rotating ball 2 is adjusted so that the spraying pipe is aimed at different directions for concrete spraying, which makes it easy to move the spraying pipe and saves effort in spraying concrete in narrow construction spaces.

[0031] Reference Figure 1 and Figure 2 The upright 1 is equipped with a mounting block 4, which has a rectangular cross-section. The mounting block 4 is located on one side of the upright 1. The rotating ball 2 is ball-connected to the mounting block 4, allowing it to be connected to the upright 1 via the mounting block 4. The rotating ball 2 is movably inserted through the mounting block 4. Placing the rotating ball 2 on the mounting block 4 facilitates its installation, allowing it to be used with spray pipes of different diameters without changing the diameter of the upright 1, thus improving its practicality.

[0032] Reference Figure 2 and Figure 3 To facilitate the fixing of the injection pipe, a fixing plate 13 is fixed on the side of the rotating ball 2 outside the mounting block 4. The mounting assembly 3 includes a mounting plate 31 and a sliding member 32. There are two mounting plates 31, which slide relative to each other on the fixing plate 13. The sliding direction of the mounting plates 31 is perpendicular to the extension direction of the through hole 12. A T-shaped block 14 is fixed on the mounting plate 31. A T-shaped groove 15 is provided on the fixing plate 13 to slide with the T-shaped block 14, which helps to guide the sliding of the mounting plate 31. The two mounting plates 31 are located on opposite sides of the through hole 12. A fixing groove 29 for fitting with the outer wall of the injection pipe is provided on the side of the mounting plate 31 near the through hole 12. The sliding member 32 is provided on the fixing plate 13 and is used to drive the two mounting plates 31 to move closer or further apart.

[0033] Reference Figure 2 and Figure 3 To facilitate moving the two mounting plates 31 closer together or further apart, the sliding member 32 includes a second bidirectional screw 321. The second bidirectional screw 321 is rotatably disposed in the T-slot 15. The rotation axis of the second bidirectional screw 321 is parallel to the sliding direction of the mounting plate 31. Two T-blocks 14 are threaded to the two ends of the second bidirectional screw 321 respectively. One end of the second bidirectional screw 321 extends rotatably out of the fixing plate 13. A handle 16 is fixed to the end of the second bidirectional screw 321 outside the fixing plate 13, which helps to rotate the second bidirectional screw 321.

[0034] When the spray pipe needs to be installed, pass the spray pipe through the through hole 12. At this time, the spray pipe is located between the mounting plates 31 on both sides. Then, turn the handle 16. The handle 16 drives the second bidirectional screw 321 to rotate. The second bidirectional screw 321 drives the two T-shaped blocks 14 to move closer to each other. The two T-shaped blocks 14 drive the two mounting plates 31 to move closer to each other. The inner wall of the fixing groove 29 of the mounting plate 31 gradually abuts against the outer wall of the spray pipe. The mounting plates 31 on both sides clamp the spray pipe, thereby fixing the spray pipe relative to the rotating ball 2, completing the installation. This method is suitable for spray pipes of different diameters. When the spray pipe needs to be removed, turn the handle 16 in the opposite direction. The handle 16 drives the second bidirectional screw 321 to reverse, causing the two T-shaped blocks 14 to move the two mounting plates 31 away from each other, thereby detaching the mounting plates 31 from the spray pipe. Then, move the spray pipe out of the through hole 12 to remove the spray pipe.

[0035] Reference Figure 3 and Figure 4 An operating ring 17 is connected to the side of the rotating ball 2 away from the fixed plate 13 via a connecting rod, and a through hole 12 is located inside the operating ring 17. The operating ring 17 is designed to allow workers to easily hold it and control the rotation angle of the rotating ball 2.

[0036] Reference Figure 1 and Figure 4 To ensure the stability of the upright 1, the stabilizing components include a placement plate 5, a balance ring 6, an arc-shaped counterweight 7, a reset component, and a transmission component. The placement plate 5 is bolted to the lower end of the upright 1. The cross-section of the placement plate 5 is circular, and multiple casters 18 are fixedly installed on the bottom wall of the placement plate 5. The balance ring 6 is rotatably sleeved on the upright 1, and the axis of rotation of the balance ring 6 is parallel to the length direction of the upright 1. The mounting block 4 is located above one side of the balance ring 6 and is slidably mounted on the balance ring 6. The sliding direction of the mounting block 4 is parallel to the length direction of the upright 1. A telescopic rod 19 is fixed between the bottom wall of the mounting block 4 and the top wall of the balance ring 6. The telescopic direction of the telescopic rod 19 is parallel to the sliding direction of the mounting block 4, and the telescopic rod 19 is used to guide the sliding of the mounting block 4. The sliding cavity 20 is provided inside. A partition plate 21 is fixed inside the sliding cavity 20 on the side away from the mounting block 4. Two arc-shaped counterweights 7 are provided, located on both sides of the partition plate 21. The two arc-shaped counterweights 7 slide relative to each other in the sliding cavity 20. The arc-shaped counterweights 7 move closer to each other or further away from each other along the circumference of the balance ring 6. The mounting block 4 is located between the two arc-shaped counterweights 7, so that the arc-shaped counterweights 7 slide in the direction of moving closer to or further away from the mounting block 4. The side of the arc-shaped counterweights 7 near the mounting block 4 is a slope, which slopes downward on the side of the slope near the mounting block 4. One side of the arc-shaped counterweights 7 near the mounting block 4 has a slot 22 for insertion and cooperation with the other side of the arc-shaped counterweights 7, so that the two arc-shaped counterweights 7 near the mounting block 4 can be inserted and cooperated with each other.

[0037] Reference Figure 1 and Figure 4 The reset component is disposed in the sliding cavity 20. The reset component is used to push the two arc counterweights 7 closer to each other. The reset component includes a first spring 8 for pushing the two arc counterweights 7 closer to each other. The first spring 8 corresponds to the arc counterweights 7 one by one. One end of the first spring 8 is fixedly disposed on the partition plate 21, and the other end is fixedly disposed on the side of the corresponding arc counterweight 7 close to the partition plate 21.

[0038] Reference Figure 1 and Figure 4 The transmission component is mounted on the mounting block 4. This component presses the two arc-shaped counterweights 7 away from each other when the mounting block 4 moves towards the balance ring 6. The transmission component includes a push rod 9 fixedly mounted on the bottom wall of the mounting block 4. The length of the push rod 9 is parallel to the sliding direction of the mounting block 4. The push rod 9 slides through the balance ring 6, which has a through hole 23 for the push rod 9 to slide through. The diameter of the push rod 9 is larger than the width of the arc-shaped counterweights 7. The end of the push rod 9 away from the mounting block 4 abuts against the inclined surface of the two arc-shaped counterweights 7. When the spray pipe is not installed on the rotating ball 2, the balance ring 6 maintains balance with the upright 1 as its center.

[0039] When the spraying pipe is installed on the rotating ball 2, the gravity of the spraying pipe drives the mounting block 4 to move the push rod 9 downward. Then, the push rod 9 slides relative to the inclined surfaces of the two arc counterweight blocks 7, pushing the arc counterweight blocks 7 to slide away from the mounting plate 31. This causes the center of gravity of the arc counterweight blocks 7 to move away from the mounting plate 31, so that the upright 1 can remain stable. Then, the spraying pipe is connected to the concrete, and the weight of the spraying pipe increases further, causing the mounting block 4 to continue to move downward. The push rod 9 continues to abut against the inclined surface of the arc counterweight blocks 7, causing the arc counterweight blocks 7 to move away from the mounting block 4. This adjusts the gravity on both sides of the upright 1, which helps to keep the upright 1 stable and prevents it from tipping over due to concrete spraying. When the spray pipe is removed from the rotating ball 2, the weight on the mounting block 4 decreases. At this time, the first spring 8 pushes the arc counterweight 7 to move towards the mounting block 4, adjusting the center of gravity of the balance ring 6. The inclined surface of the arc counterweight 7 abuts against the push rod 9 and moves upward, causing the mounting block 4 to move upward to reset until the weight on both sides of the upright 1 is equal.

[0040] Reference Figure 4 The bottom wall of the arc-shaped counterweight 7 is fitted with multiple ball bearings (not shown in the figure), which abut against the bottom wall of the sliding cavity 20. The ball bearings are configured to guide the movement of the arc-shaped counterweight 7.

[0041] Reference Figure 2 and Figure 4A support plate 24 is fixed to the top wall of the balance ring 6. The support plate 24 is located below the mounting block 4. A groove 25 is provided on the side of the support plate 24 near the push rod 9. Two protrusions 26 are slidably arranged in the groove 25. The sliding direction of the protrusions 26 is perpendicular to the length direction of the upright rod 1. The longitudinal section of the protrusions 26 is T-shaped. A clamping plate 10 is fixedly connected to the side of the protrusions 26 away from the groove 25. The push rod 9 is located between the two clamping plates 10. A fitting groove 27 for fitting with the outer wall of the push rod 9 is provided on the side of the clamping plate 10 near the push rod 9. An adjusting element for driving the two clamping plates 10 to move closer or further apart is provided in the groove 25.

[0042] Reference Figure 2 and Figure 4 To facilitate driving the two clamping plates 10 closer to or further apart, the adjusting component includes a first bidirectional screw 11. The first bidirectional screw 11 is rotatably disposed in the groove 25. The rotation axis of the first bidirectional screw 11 is parallel to the sliding direction of the clamping plates 10. Two protrusions 26 are threaded to the two ends of the first bidirectional screw 11 respectively. One end of the first bidirectional screw 11 extends to the outside of the support plate 24. An operating handle 28 is fixed to the end of the first bidirectional screw 11 located outside the support plate 24 to facilitate the rotation of the first bidirectional screw 11.

[0043] When the spraying pipe is installed on the rotating ball 2 and the concrete is connected, the mounting block 4 moves down to a certain position. Then, the operating handle 28 is rotated, which drives the first bidirectional screw 11 to rotate. The first bidirectional screw 11 drives the two protrusions 26 to move the two clamping plates 10 closer together, so that the two clamping plates 10 clamp the push rod 9, thereby fixing the position of the mounting block 4 and helping the pole 1 to remain stable. When it is necessary to remove the spraying pipe, the operating handle 28 is rotated, which drives the first bidirectional screw 11 to reverse, causing the two protrusions 26 to move the two clamping plates 10 away from each other, so that the clamping plates 10 are disengaged from the push rod 9, thus facilitating the upward movement and repositioning of the mounting block 4 and helping the pole 1 to continue to remain stable.

[0044] The implementation principle of this application embodiment is as follows: During construction, the spray pipe is passed through the through hole 12, and then the handle 16 is rotated. The handle 16 drives the second bidirectional screw 321 to rotate. The rotation of the second bidirectional screw 321 drives the two T-shaped blocks 14 to move closer to each other. The two T-shaped blocks 14 drive the two mounting plates 31 to move closer to each other, clamping the spray pipe. The spray pipe and the rotating ball 2 are relatively fixed. At this time, under the gravity of the spray pipe, the mounting block 4 drives the push rod 9 to move downward. Then, the push rod 9 slides relative to the inclined surface of the two arc counterweight blocks 7, pushing the arc counterweight blocks 7 to slide away from the mounting plate 31, thereby moving the center of gravity of the arc counterweight blocks 7 away from the mounting plate 31, so that the upright 1 can remain stable. Then, the upright 1 is moved to drive the spray pipe to the narrow construction area. In the space, the concrete is connected, and the weight of the spraying pipe increases further, causing the mounting block 4 to continue to move downwards. The push rod 9 continues to abut against the inclined surface of the arc counterweight block 7, causing the arc counterweight block 7 to move away from the mounting block 4 to adjust the gravity on both sides of the upright 1, keeping the upright 1 stable. Then, the operating handle 28 is rotated, which drives the first bidirectional screw 11 to rotate. The first bidirectional screw 11 drives the two protrusions 26 to bring the two clamping plates 10 closer to each other, so that the two clamping plates 10 clamp the push rod 9. By adjusting the angle of the operating ring 17, the spraying pipe is aimed at different directions for spraying. The upright 1 is supported by the rotating ball 2. Because the upright 1 is small in size and can remain stable, it is easy to move the spraying pipe and perform concrete spraying in a narrow construction space with less effort.

[0045] When spraying is complete and the spray pipe needs to be removed from the rotating ball 2, turn the operating handle 28. The operating handle 28 drives the first bidirectional screw 11 to reverse, causing the two protrusions 26 to move the two clamping plates 10 away from each other. The clamping plates 10 disengage from the push rod 9. Then turn the handle 16. The handle 16 drives the second bidirectional screw 321 to reverse, causing the two T-blocks 14 to move the two mounting plates 31 away from each other. The mounting plates 31 disengage from the spray pipe. Then move the spray pipe out of the through hole 12. At this time, the weight on the mounting block 4 decreases. The first spring 8 pushes the arc counterweight 7 to move towards the mounting block 4, adjusting the center of gravity of the balance ring 6. The inclined surface of the arc counterweight 7 abuts against the push rod 9 and moves upward, causing the mounting block 4 to move upward to reset until the weight on both sides of the upright 1 is equal.

[0046] This application also discloses a shotcrete construction method. The shotcrete construction method, using the aforementioned shotcrete construction device, includes the following steps:

[0047] Step 1: Place the placement tray 5 in the desired location on the construction site;

[0048] Step 2: Pass the spray pipe through the through hole 12, and drive the two mounting plates 31 closer to each other by rotating the second bidirectional screw 321 of the mounting assembly 3. The two mounting plates 31 clamp and fix the spray pipe on the rotating ball 2.

[0049] Step 3: When the spray pipe is fixed to the rotating ball 2, the mounting block 4 moves downward under the gravity of the spray pipe, and the push rod 9 presses down on the two arc counterweights 7, causing the two arc counterweights 7 to move away from the mounting block 4, adjusting the center of gravity, so that the upright 1 remains stable.

[0050] Step 4: Turn on the spray pipe, rotate the first bidirectional screw 11, the two clamping plates 10 move closer to each other to clamp the push rod 9, then hold the operating ring 17, adjust the angle of the rotating ball 2, and spray concrete.

[0051] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A shotcrete construction device, characterized in that: Includes a pole (1), the pole (1) is ball-connected to a rotating ball (2), the rotating ball (2) is provided with a mounting assembly (3) for installing a spray pipe, and the pole (1) is provided with a stabilizing assembly for keeping the pole (1) stable; The upright (1) is provided with a mounting block (4), and the rotating ball (2) is connected to the mounting block (4); The stabilizing assembly includes a placement plate (5) at the lower end of the upright (1), a balance ring (6) sleeved on the upright (1), two arc-shaped counterweights (7) sliding relative to each other within the balance ring (6), a reset component within the balance ring (6), and a transmission component mounted on a mounting block (4). The mounting block (4) is slidably positioned above the balance ring (6), and the sliding direction of the mounting block (4) is parallel to the length direction of the upright (1). The arc-shaped counterweights (7) are close to each other along the circumference of the balance ring (6). Whether near or far, the mounting block (4) is located between two arc counterweight blocks (7). The side of the arc counterweight block (7) near the mounting block (4) is an inclined surface, and the side of the inclined surface near the mounting block (4) is inclined downward. The two arc counterweight blocks (7) are interlocked on the side near the mounting block (4). The reset member is used to push the two arc counterweight blocks (7) closer to each other. The transmission member is used to press the two arc counterweight blocks (7) away from each other when the mounting block (4) moves toward the balance ring (6). The transmission component includes a push rod (9) mounted on the mounting block (4), the push rod (9) slides through the balance ring (6), and the end of the push rod (9) away from the mounting block (4) abuts against the inclined surfaces of two circular arc counterweights (7); The balance ring (6) has two clamping plates (10) that slide relative to each other. The sliding direction of the clamping plates (10) is perpendicular to the sliding direction of the mounting block (4). The push rod (9) is located between the two clamping plates (10). The balance ring (6) is provided with an adjusting member for driving the two clamping plates (10) to move closer or further apart from each other.

2. The shotcrete construction device according to claim 1, characterized in that: The reset component includes a first spring (8) for pushing the two arc-shaped counterweights (7) closer to each other. One end of the first spring (8) is disposed inside the balance ring (6), and the other end is disposed on the arc-shaped counterweights (7).

3. The shotcrete construction device according to claim 1, characterized in that: The adjusting component includes a first bidirectional screw (11) rotatably mounted on a balance ring (6). The rotation axis of the first bidirectional screw (11) is parallel to the sliding direction of the clamping plate (10). The two clamping plates (10) are respectively threaded to the two ends of the first bidirectional screw (11).

4. The shotcrete construction device according to claim 1, characterized in that: The rotating ball (2) has a through hole (12) for the jet pipe to pass through. The through hole (12) is opened along the center line of the rotating ball (2). The mounting assembly (3) includes two mounting plates (31) that slide relative to each other on the rotating ball (2) and a sliding member (32) disposed on the rotating ball (2). The two mounting plates (31) are located on opposite sides of the through hole (12). The sliding direction of the mounting plates (31) is perpendicular to the extension direction of the through hole (12). The sliding member (32) is used to drive the two mounting plates (31) to move closer to or further away from each other.

5. A shotcrete construction device according to claim 4, characterized in that: The sliding member (32) includes a second bidirectional screw (321) rotatably mounted on a rotating ball (2). The rotation axis of the second bidirectional screw (321) is parallel to the sliding direction of the mounting plate (31). The two mounting plates (31) are respectively threaded to the two ends of the second bidirectional screw (321).

6. A method for applying shotcrete, using the shotcrete application apparatus as described in any one of claims 1-5, characterized in that, Includes the following steps: Place the upright (1) at the required location on the construction site; The jet pipe is mounted and fixed on the rotating ball (2) by mounting component (3); The upright (1) is kept stable by stabilizing the components; Turn on the spray pipe to spray concrete.

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