Concrete spray head assembly and concrete spraying equipment

Abstract

The invention discloses a concrete spray head assembly and concrete spraying equipment, and relates to the field of concrete spraying equipment.The concrete spray head assembly comprises a discharging bin and a concrete spray nozzle, and the discharging bin is connected with a concrete conveying pipe, an additive conveying pipe and a high-pressure air pipe; the concrete conveying pipe, the additive conveying pipe and the high-pressure air pipe are all connected to the concrete nozzle. It needs to be explained that in the embodiment of the invention, in the operation process, if the spray head is damaged or leaks, the outer protective cover is used for protection, and concrete is prevented from impacting a worker; besides, when the concrete conveying pipe is blocked, an additive and high-pressure gas input port is closed through a T-shaped on-off frame, the additive and high-pressure gas enter two separation transfer boxes, meanwhile, a blocking plate is rotated to the position in front of a spray head, sprayed concrete is blocked, and the concrete conveying pipe is prevented from being blocked. The problem that the concrete is still continuously sprayed to a working surface when the spraying requirement cannot be met due to the leakage of the spray head is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of concrete spraying equipment, in particular to a concrete nozzle assembly and a concrete spraying equipment. BACKGROUND

[0002] Spraying concrete is a construction method for spraying and filling fine stone concrete with a pressure spray gun, which is often used for lining and protecting layers of thin-walled structures or other structures such as tunnel lining, walls, ceilings, etc., and spraying concrete is to mix pre-prepared cement, sand, gravel, water and a certain amount of additive into a spraying machine, and then mix with a quick-setting agent and spray at a high speed to the surface of rock or concrete.

[0003] When spraying concrete, the concrete enters the concrete nozzle through the concrete delivery pipe, and is sprayed out through the nozzle, while the additive and high-pressure gas are delivered through the additive delivery pipe and the high-pressure gas pipe to spray the concrete on the work surface. It should be noted that the spraying angle, spraying pressure, etc. of the concrete have high requirements, and only the required spraying on the work surface can ensure the spraying quality of the work surface. However, the nozzle is actually a consumable part, usually made of plastic material, and installed on the nozzle, so during construction, the concrete often mixed with aggregate, so the impact of the concrete on the nozzle when sprayed is large, which can easily cause damage to the nozzle or loose connection and leakage, thereby causing the sprayed concrete pressure to be substandard and unable to firmly adhere to the work surface. At the same time, when the pipeline is blocked, the amount of sprayed concrete is rapidly reduced, and there is no blocking measure on the nozzle, which also causes a large amount of unqualified concrete to be sprayed on the work surface, thereby causing the construction of the work surface to be unqualified. SUMMARY

[0004] The purpose of the present application is to provide a concrete nozzle assembly and a concrete spraying equipment to solve the problems raised in the background.

[0005] To achieve the above purpose, the present application provides the following technical scheme: A concrete nozzle assembly, comprising a discharge bin and a concrete nozzle, the discharge bin being connected with a concrete delivery pipe, an additive delivery pipe and a high-pressure gas pipe, the concrete delivery pipe, the additive delivery pipe and the high-pressure gas pipe being connected to the concrete nozzle, and the concrete nozzle being movably installed with a nozzle. The broken separation device is further provided with a centralized support installed on the concrete nozzle, one side of the centralized support is provided with an outer shroud, one side of the outer shroud is provided with an end plate, the spray head is located in the outer shroud, and two separation transfer boxes are installed on the centralized support, and the additive delivery pipe and the high-pressure gas pipe are connected to the two separation transfer boxes respectively. The broken separation device is further provided with a blocking and buffering device installed on the broken separation device, the blocking and buffering device is used for blocking and buffering the concrete sprayed by the spray head, the blocking and buffering device comprises two rotating supports, the two rotating supports are rotatably installed on the two sides of the outer shroud respectively, buffering pull rods are movably installed on the two rotating supports respectively, a blocking plate is connected between the two buffering pull rods, and the two rotating supports are used for rotating the blocking plate through the two buffering pull rods, so that the concrete sprayed by the spray head is blocked.

[0006] Further, in the preferable embodiment of the present application, the broken separation device further comprises four impact plates, the four impact plates are located in the outer shroud, and driven push frames are movably installed around the outer shroud, the four driven push frames are installed on the four impact plates respectively. A retraction spring is installed on the impact plate, and the other end of the retraction spring is installed on the inner wall of the outer shroud.

[0007] Further, in the preferable embodiment of the present application, four adapter supports are movably installed on the centralized support, push rings are installed on the four adapter supports, and the driven push frames are used for moving the push rings. A transfer frame is installed on the four adapter supports, two synchronous push frames are installed on the transfer frame, and push columns are installed on the two synchronous push frames. A rotating push rod is rotatably installed on the two separation transfer boxes, the two T-shaped on-off frames are movably installed on the two rotating push rods respectively, the two synchronous push frames are used for moving the two rotating push rods through the two push columns, so that the T-shaped on-off frames are driven to move.

[0008] Further, in the preferable embodiment of the present application, two sliding push shafts are rotatably installed on the rotating push rod, one sliding push shaft is movably installed in the T-shaped on-off frame, and the other sliding push shaft is installed on the separation transfer box.

[0009] Further, in the preferred embodiment of the present application, a closed bottom plate is mounted on the bottom side of the T-shaped on-off frame, which is used to close the bottom side of the separated transfer box. Both sides of the T-shaped on-off frame are provided with rebound grooves, and rebound clamping rods are movably mounted in the two rebound grooves, and rebound springs are mounted on the inner walls of the rebound grooves.

[0010] Further, in the preferred embodiment of the present application, a plugging separation device is mounted on the damaged separation device, which is used to separate the additive delivery pipe and the high-pressure gas pipe from the concrete nozzle. The plugging separation device comprises two pipe clamping plates, two limiting movement grooves are formed in the central support, and the two pipe clamping plates are slidably installed in the two limiting movement grooves, respectively.

[0011] Further, in the preferred embodiment of the present application, reset springs are mounted on both sides of the pipe clamping plate, and one end of the mutually distal end of the two reset springs is mounted on the inner wall of the limiting movement groove, respectively. The synchronous push frame is provided with an inner recessed push plate, the pipe clamping plate is provided with an L-shaped push frame, the pipe clamping plate moves to drive the L-shaped push frame to move the inner recessed push plate, which is used to drive the synchronous push frame to move.

[0012] Further, in the preferred embodiment of the present application, a pulling groove is formed in the rotating support, a pull-back shaft is mounted on one side of the adapter support, and the pull-back shaft is movably installed in the pulling groove. The rotating support is rotatably provided with a supporting shaft, and the supporting shaft is mounted on one side of the outer guard.

[0013] Further, in the preferred embodiment of the present application, a buffer groove is formed in the rotating support, a buffer pull rod is movably installed in the buffer groove, and a buffer spring is mounted between the buffer pull rod and the inner wall of the buffer groove. One side of the outer guard is provided with a limiting bottom plate, and the blocking plate is rotatably limited by the limiting bottom plate.

[0014] In the present application, a concrete spraying device is also provided, which comprises the above-mentioned concrete nozzle assembly.

[0015] The concrete nozzle assembly and the concrete spraying device provided by the present application have the following beneficial effects: In the application, through the arrangement of the breakage separation device, if the nozzle breaks or leaks during the concrete spraying operation, the outer protective cover is closed to protect the workers from the impact of the concrete, the T-shaped on-off frame closes the input openings of the additives and high-pressure gas, and the additives and high-pressure gas enter the two separated transfer boxes, so that the problem that the concrete still continues to be sprayed on the work surface when the nozzle leaks and the concrete does not meet the spraying requirements is avoided, and the workers can discover the problem in time, so that the quality of the concrete on the work surface can be ensured, and technical problems can be solved in time to ensure the work efficiency of the concrete spraying operation.

[0016] Further, in the application, through the arrangement of the blockage separation device, if the concrete delivery pipe is blocked near the concrete nozzle or away from the concrete nozzle during the spraying process, the two pipe clamps will slide in the two limiting movement grooves, the pipe clamps will move through the L-shaped push frame to press the concave push plate to move, the concave push plate will drive the adapter support to move synchronously, and then the T-shaped on-off frame will move, so that the input openings of the additives and high-pressure gas can be closed.

[0017] Further, in the application, through the arrangement of the blockage separation device, if the concrete delivery pipe is blocked near the concrete nozzle or away from the concrete nozzle during the spraying process, the two pipe clamps will slide in the two limiting movement grooves, the pipe clamps will move through the L-shaped push frame to press the concave push plate to move, the concave push plate will drive the adapter support to move synchronously, and then the T-shaped on-off frame will move, so that the input openings of the additives and high-pressure gas can be closed. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A three-dimensional structural schematic view of a concrete nozzle assembly is provided for the embodiments of the application. Figure 2 A structural schematic view of the connection between the concrete nozzle and the nozzle of a concrete nozzle assembly is provided for the embodiments of the application. Figure 3 A structural schematic view of the connection between the central support and the rotating support of a concrete nozzle assembly is provided for the embodiments of the application. Figure 4 A structural schematic view of the connection between the impact plate and the active push frame of a concrete nozzle assembly is provided for the embodiments of the application. Figure 5A schematic view of structure connection of a concrete nozzle of a concrete spraying head assembly and a centralized support provided by an embodiment of the present application; Figure 6 A structure schematic view of structure connection of an adapter support of a concrete spraying head assembly and a pushing ring provided by an embodiment of the present application; Figure 7 A structure schematic view of structure connection of a separated transfer box of a concrete spraying head assembly and a T-shaped on-off support provided by an embodiment of the present application; Figure 8 A sectional structure schematic view of structure connection of a separated transfer box of a concrete spraying head assembly and a T-shaped on-off support provided by an embodiment of the present application; Figure 9 A structure schematic view of a centralized support of a concrete spraying head assembly and a pipe clamp plate provided by an embodiment of the present application; Figure 8 A structure schematic view of a centralized support of a concrete spraying head assembly and a pipe clamp plate provided by an embodiment of the present application; Figure 10 A structure schematic view of a centralized support of a concrete spraying head assembly and a pipe clamp plate provided by an embodiment of the present application; Figure 11 A structure schematic view of a centralized support of a concrete spraying head assembly and a pipe clamp plate provided by an embodiment of the present application.

[0019] In the figure: 1-discharge bin; 2-concrete nozzle; 3-spraying head; 4-concrete delivery pipe; 5-additive delivery pipe; 6-high-pressure air pipe; 7-broken separation device; 701-centralized support; 702-outer cover; 703-end sealing plate; 704-impact plate; 705-active pushing support; 706-retraction spring; 707-adapter support; 708-separated transfer box; 709-T-shaped on-off support; 710-rotary pushing rod; 711-sliding pushing shaft; 712-synchronous pushing support; 713-pushing column; 714-sealing bottom plate; 715-rebound groove; 716-rebound clamping rod; 717-rebound spring; 718-transfer support; 719-pushing ring; 8-plugging separation device; 801-pipe clamp plate; 802-limiting movement groove; 803-reset spring; 804-inner recessed pushing plate; 805-L-shaped pushing support; 9-blocking buffer device; 901-rotary support; 902-blocking plate; 903-buffer pulling rod; 904-pulling shaft; 905-pulling groove; 906-supporting shaft; 907-buffer groove; 908-buffer spring; 909-limiting bottom plate. DETAILED DESCRIPTION

[0020] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0022] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0023] In addition, in the description of the present application, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation and cannot be understood as indicating or implying relative importance.

[0024] In addition, the terms "horizontal", "vertical", "perpendicular" and the like do not mean that the components must be absolutely vertical, but can be slightly inclined. For example, "vertical" only means that its direction is more vertical relative to "horizontal", and does not mean that the structure must be completely vertical, but can be slightly inclined.

[0025] In the description of the present application, it should also be noted that unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] Please refer to the drawings in the description Figures 1-2The embodiment of the present application provides a concrete nozzle assembly, which comprises a discharging bin 1 and a concrete nozzle 2, the concrete nozzle 2 is movably connected with a nozzle 3, the discharging bin 1 is connected with a concrete conveying pipe 4, an additive conveying pipe 5 and a high-pressure air pipe 6, the concrete conveying pipe 4, the additive conveying pipe 5 and the high-pressure air pipe 6 are connected with the concrete nozzle 2.

[0027] Further, please refer to the accompanying drawings in the description Figures 3-9 The concrete nozzle assembly provided by the embodiment of the present application further comprises a damage separation device 7, the damage separation device 7 is installed on the concrete nozzle 2, and the damage separation device 7 is used for separating the additive conveying pipe 5 and the high-pressure air pipe 6 from the concrete nozzle 2; specifically, the damage separation device 7 comprises a centralized support 701, the centralized support 701 is installed on the concrete nozzle 2, one side of the centralized support 701 is provided with an outer shroud 702, one side of the outer shroud 702 is clamped with an end sealing plate 703, the nozzle 3 is located in the outer shroud 702, two separation transfer boxes 708 are installed on the centralized support 701, the additive conveying pipe 5 and the high-pressure air pipe 6 are connected with the two separation transfer boxes 708 respectively, and T-shaped on-off frames 709 are movably installed in the two separation transfer boxes 708. It should be noted that, in the embodiment of the present application, when the nozzle 3 is damaged or leaks during the spraying operation of the concrete, the outer shroud 702 is used for closed protection, so that the impact of the concrete on the workers is avoided, meanwhile, the T-shaped on-off frames 709 are used for closing the input ports of the additives and the high-pressure air, and the additives and the high-pressure air are made to enter the two separation transfer boxes 708, so that the problem that the concrete is continuously sprayed when the nozzle 3 leaks and the spraying requirement of the concrete cannot be met is avoided.

[0028] Further, the embodiment of the present application further comprises a blocking and buffering device 9, the blocking and buffering device 9 is installed on the damage separation device 7, and the blocking and buffering device 9 is used for blocking and buffering the concrete sprayed by the nozzle 3; specifically, the blocking and buffering device 9 comprises two rotating supports 901, the two rotating supports 901 are rotatably installed on the two sides of the outer shroud 702 respectively, buffering pull rods 903 are movably installed on the two rotating supports 901 respectively, a blocking plate 902 is connected between the two buffering pull rods 903, and the two rotating supports 901 are used for rotating the blocking plate 902 through the two buffering pull rods 903 to rotate to the front of the nozzle 3, so that the sprayed concrete is blocked. It should be noted that, in the embodiment of the present application, when the transfer support 707 moves, the rotating support 901 is made to rotate the blocking plate 902 to the front of the nozzle 3, so that the sprayed concrete is blocked, and the problem that unqualified concrete is sprayed on the working surface is avoided.

[0029] Further, please refer to the accompanying drawings in the description Figures 3-9Further, the concrete nozzle assembly provided by the embodiment of the present application further comprises four impact plates 704, the four impact plates 704 are located in the outer shroud 702, the outer shroud 702 is movably provided with four active push frames 705 around, the four active push frames 705 are respectively installed on the four impact plates 704; the impact plate 704 is provided with a retraction spring 706, the other end of the retraction spring 706 is installed on the inner wall of the outer shroud 702. It should be noted that, in the embodiment of the present application, when the nozzle 3 is damaged or leaks, the leaked gas or concrete is sprayed on one or more impact plates 704, so that the impact plate 704 drives the active push frame 705 to move, and drives the retraction spring 706 to contract.

[0030] Further, the four adapter supports 707 are movably installed on the central support 701, the four adapter supports 707 are provided with a push ring 719, the active push frame 705 moves to push the push ring 719 to move; the four adapter supports 707 are provided with a transfer frame 718, the transfer frame 718 is provided with two synchronous push frames 712, the two synchronous push frames 712 are respectively provided with a push column 713; In addition, the two separation transfer boxes 708 are respectively provided with a rotating push rod 710, the two T-shaped on-off frames 709 are movably installed on the two rotating push rods 710, the two synchronous push frames 712 move through the two push columns 713 to push the two rotating push rods 710 to rotate, so as to drive the T-shaped on-off frame 709 to move. It should be noted that, in the embodiment of the present application, when the impact plate 704 is impacted, the push ring 719 is moved by the active push frame 705, the adapter support 707 is moved by the push ring 719, the transfer frame 718 is moved by the adapter support 707, the two synchronous push frames 712 are moved by the transfer frame 718, the rotating push rod 710 is rotated by the synchronous push frame 712 through the push column 713, so that the rotating push rod 710 drives the T-shaped on-off frame 709 to move, and then the T-shaped on-off frame 709 closes the input port of the additive and high-pressure gas, and the additive and high-pressure gas enter the two separation transfer boxes 708.

[0031] Please continue to refer to the description of the drawings Figures 3-9 Further, the two sliding push shafts 711 are rotatably installed on the rotating push rod 710, one sliding push shaft 711 is movably installed in the T-shaped on-off frame 709, and the other sliding push shaft 711 is installed on the separation transfer box 708. It should be noted that, in the embodiment of the present application, when the rotating push rod 710 rotates, one sliding push shaft 711 rotates, and the T-shaped on-off frame 709 moves through the other sliding push shaft 711.

[0032] Further, the bottom side of the T-shaped on-off frame 709 is provided with a closed bottom plate 714, which is used to close the bottom side of the separated transfer box 708; in addition, the two sides of the T-shaped on-off frame 709 are provided with rebound grooves 715, and the rebound grooves 715 are movably provided with rebound clamping rods 716, and the rebound clamping rods 716 are provided with rebound springs 717 on the inner walls of the rebound grooves 715. It should be noted that in the embodiment of the present application, the T-shaped on-off frame 709 is moved to separate the closed bottom plate 714 from the separated transfer box 708, at this time, the bottom side of the separated transfer box 708 is open, so that the additives and high-pressure gas can be discharged, and at the same time, under the rebound force of the two rebound springs 717, the two rebound clamping rods 716 are driven to pop out and are clamped on the bottom side of the separated transfer box 708, so that the position of the T-shaped on-off frame 709 is maintained.

[0033] Please refer to the drawings of the specification Figure 10 Further, the broken separation device 7 is provided with a plugging separation device 8, which is used to separate the additive delivery pipe 5 and the high-pressure gas pipe 6 from the concrete nozzle 2; specifically, the plugging separation device 8 comprises two pipe clamping plates 801, and the centralized support 701 is provided with two movement limiting grooves 802, and the two pipe clamping plates 801 are slidably installed in the two movement limiting grooves 802, and the two pipe clamping plates 801 are clamped on the concrete delivery pipe 4. It should be noted that in the embodiment of the present application, when the concrete delivery pipe 4 is blocked, the pipe clamping plate 801 is moved, thereby driving the T-shaped on-off frame 709 to move, so as to achieve the purpose of closing the input port of the additives and high-pressure gas.

[0034] Further, the two sides of the pipe clamping plate 801 are provided with reset springs 803, one end of the mutually far ends of the two reset springs 803 is respectively installed on the inner walls of the two movement limiting grooves 802; in addition, the synchronous push frame 712 is provided with an inner recessed push plate 804, and the pipe clamping plate 801 is provided with an L-shaped push frame 805, and the pipe clamping plate 801 moves to drive the L-shaped push frame 805 to push the inner recessed push plate 804 to move, which is used to drive the synchronous push frame 712 to move. It should be noted that in the embodiment of the present application, in the process of moving the pipe clamping plate 801, the pipe clamping plate 801 moves by extruding the inner recessed push plate 804 through the L-shaped push frame 805, so that the inner recessed push plate 804 can drive the adapter support 707 to move synchronously, so as to achieve the purpose of driving the T-shaped on-off frame 709 to move.

[0035] Please refer to the drawings of the specification Figure 3 and Figure 11Further specifically, in the embodiment of the present application, the rotating support 901 is provided with a pulling groove 905, and the adapter support 707 is provided with a pulling-back shaft 904 on one side, which is movably arranged in the pulling groove 905. In addition, the rotating support 901 is rotatably provided with a supporting shaft 906 on one side of the outer cover 702. It should be noted that in the embodiment of the present application, when the adapter support 707 moves, the pulling-back shaft 904 moves in the pulling groove 905, thereby driving the rotating support 901 to rotate, and the rotating support 901 rotates on the supporting shaft 906, and the rotating support 901 drives the blocking plate 902 to rotate to the front of the nozzle 3, thereby achieving the purpose of automatically blocking the sprayed concrete.

[0036] Further specifically, in the embodiment of the present application, the rotating support 901 is provided with a buffer groove 907, and the buffer pulling rod 903 is movably arranged in the buffer groove 907, and the buffer spring 908 is arranged between the buffer pulling rod 903 and the inner wall of the buffer groove 907. In addition, the outer cover 702 is provided with a limiting bottom plate 909 on one side, and the rotating of the blocking plate 902 is limited by the limiting bottom plate 909. It should be noted that in the embodiment of the present application, when the concrete impacts the blocking plate 902, the blocking plate 902 moves in the two buffer grooves 907 through the two buffer pulling rods 903, and drives the two buffer springs 908 to be stressed, and under the rebound force of the two buffer springs 908, the two buffer pulling rods 903 pull the blocking plate 902 to reset, thereby buffering the sprayed concrete and avoiding the blocking plate 902 from being damaged by impact.

[0037] In summary, the working principle of the concrete nozzle assembly provided by the embodiment of the present application is as follows: When the concrete spraying operation is performed, if the nozzle 3 is damaged or leaks, at this time, the leaked gas or concrete is sprayed on one or more impact plates 704, so that the impact plate 704 drives the active push frame 705 to move, and the retraction spring 706 is retracted, the active push frame 705 moves to squeeze the push ring 719 to move, the push ring 719 drives the adapter bracket 707 to move, the adapter bracket 707 drives the transfer frame 718 to move, the transfer frame 718 drives the two synchronous push frames 712 to move, the synchronous push frame 712 squeezes the rotating push rod 710 to rotate through the push column 713, the rotating push rod 710 rotates on a sliding push shaft 711, and at the same time, the rotating push rod 710 drives the T-shaped on-off frame 709 to move through the other sliding push shaft 711, so that the T-shaped on-off frame 709 closes the input port of the additive and high-pressure gas, and the additive and high-pressure gas enters the two separate transfer boxes 708; at the same time, the movement of the T-shaped on-off frame 709 makes the closed bottom plate 714 separate from the separate transfer box 708, at this time, the bottom side of the separate transfer box 708 is open, so that the additive and high-pressure gas can be discharged, avoiding the problem that when the nozzle 3 leaks, the concrete still continues to spray when the concrete does not meet the spraying requirements; Further, in the process of spraying of the concrete delivery pipe 4, the concrete delivery pipe 4 is clamped by the two pipe clamping plates 801, at this time, if the concrete delivery pipe 4 is blocked near the concrete nozzle 2 or away from the concrete nozzle 2, so that the concrete in the section of the concrete delivery pipe 4 clamped by the pipe clamping plate 801 accumulates or decreases, it will cause the concrete delivery pipe 4 to be inflated or clamped by the pipe clamping plate 801, and then the two pipe clamping plates 801 slide in the two limit movement grooves 802, the pipe clamping plate 801 moves to squeeze the recessed push plate 804 to move through the L-shaped push frame 805, so that the recessed push plate 804 can drive the adapter bracket 707 to move synchronously, and then the T-shaped on-off frame 709 moves, which can also achieve the purpose of closing the input port of the additive and high-pressure gas by the T-shaped on-off frame 709; Further, when the adapter bracket 707 moves, the pull shaft 904 moves in the pull groove 905, thereby driving the rotating bracket 901 to rotate, the rotating bracket 901 rotates on the support shaft 906, and at the same time, the rotating bracket 901 drives the blocking plate 902 to rotate to the front of the nozzle 3, thereby blocking the sprayed concrete, avoiding the sprayed concrete from being sprayed on the working surface; in addition, the concrete impact blocking plate 902 moves in the two buffer grooves 907 through the two buffer pull rods 903, and drives the two buffer springs 908 to be stressed, so that the two buffer pull rods 903 pull the blocking plate 902 to reset under the rebound force of the two buffer springs 908, thereby buffering the sprayed concrete, and ensuring the blocking effect.

[0038] In addition, in some embodiments of the present application, a concrete spraying device is also provided, which comprises the concrete spraying head assembly provided by the embodiments of the present application, and since the core principle and the creative technical contribution of the concrete spraying device mainly depend on the concrete spraying head assembly provided by the embodiments of the present application, the applicant will not make specific description of the concrete spraying device.

[0039] In addition, it should be emphasized that the above description is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make equivalent replacement or change within the technical range disclosed by the present application according to the technical solution and the inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. A concrete spray nozzle assembly, characterized in that, It includes a discharge hopper and a concrete nozzle. The discharge hopper is connected to a concrete conveying pipe, an additive conveying pipe and a high-pressure air pipe. The concrete conveying pipe, the additive conveying pipe and the high-pressure air pipe are all connected to the concrete nozzle. A nozzle is movably installed on the concrete nozzle. It also includes a breakage separation device, which is installed on the concrete nozzle and is used to separate the additive delivery pipe and the high-pressure air pipe from the concrete nozzle. The breakage separation device includes a central support, which is installed on the concrete nozzle. An outer protective cover is installed on one side of the central support, and an end sealing plate is snapped onto one side of the outer protective cover. The nozzle is located inside the outer protective cover. Two separation transfer boxes are installed on the central support. The additive delivery pipe and the high-pressure air pipe are respectively connected to the two separation transfer boxes. A T-shaped through-and-out bracket is movably installed in each of the two separation transfer boxes. It also includes a blocking and buffering device, which is installed on the breakage separation device and is used to block and buffer the concrete sprayed from the nozzle; The blocking and buffering device includes two rotating brackets, which are respectively rotatably mounted on both sides of the outer protective cover. A buffer rod is movably mounted on each of the two rotating brackets, and a blocking plate is connected between the two buffer rods. The rotation of the two rotating brackets drives the blocking plate to rotate through the two buffer rods, thereby blocking the concrete sprayed from the nozzle.

2. A concrete spray nozzle assembly according to claim 1, characterized in that, The breakage separation device also includes four impact plates, all of which are located inside the outer protective cover. Active pushers are movably installed around the outer protective cover, and the four active pushers are respectively installed on the four impact plates. A return spring is installed on the impact plate, and the other end of the return spring is installed on the inner wall of the outer protective cover.

3. A concrete spray nozzle assembly according to claim 2, characterized in that, Four adapter brackets are movably mounted on the central support, and push rings are mounted on the four adapter brackets. The active pusher moves to push the push rings. A transfer frame is installed on each of the four aforementioned adapter brackets, and two synchronous push frames are installed on each of the transfer frames, with a push column installed on each of the two synchronous push frames; Both of the two separation transfer boxes are rotatably mounted with rotating push rods, and the two T-shaped switching frames are respectively movably mounted on the two rotating push rods. The movement of the two synchronous push frames is achieved by the two pushing columns driving the two rotating push rods to rotate, thereby driving the T-shaped switching frames to move.

4. A concrete nozzle assembly according to claim 3, characterized in that, Two sliding push shafts are rotatably mounted on the rotating push rod. One sliding push shaft is movably installed inside the T-shaped through-and-break frame, and the other sliding push shaft is installed on the separation transfer box.

5. A concrete spray nozzle assembly according to claim 4, characterized in that, A closed bottom plate is installed on the bottom side of the T-shaped through-break frame, and the closed bottom plate is used to close the bottom side of the separation transfer box; The T-shaped through-break frame has spring grooves on both sides, and spring clips are movably installed in both spring grooves. Spring clips and spring springs are installed on the inner walls of the spring grooves.

6. A concrete spray nozzle assembly according to claim 5, characterized in that, The breakage separation device is equipped with a blockage separation device, which is used to separate the additive delivery pipe and the high-pressure air pipe from the concrete nozzle; The blockage separation device includes two pipe clamps, and two movement restriction grooves are provided on the central support. The two pipe clamps are slidably installed in the two movement restriction grooves respectively, and the two pipe clamps are clamped on the concrete delivery pipe.

7. A concrete spray nozzle assembly according to claim 6, characterized in that, Both sides of the pipe clamp are equipped with return springs, and the ends of the two return springs that are far apart from each other are respectively installed on the inner walls of the two sides of the limiting movement groove. The synchronous pusher is equipped with a concave push plate, and the pipe clamp is equipped with an L-shaped pusher. The movement of the pipe clamp drives the L-shaped pusher to push the concave push plate to move, thereby driving the synchronous pusher to move.

8. A concrete spray nozzle assembly according to claim 7, characterized in that, The rotating bracket is provided with a pull groove, and a return shaft is installed on one side of the adapter bracket. The return shaft is movably installed in the pull groove. A support shaft is rotatably mounted on the rotating bracket, and the support shaft is installed on one side of the outer protective cover.

9. A concrete spray nozzle assembly according to claim 8, characterized in that, The rotating bracket is provided with a buffer groove, the buffer rod is movably installed in the buffer groove, and a buffer spring is installed between the buffer rod and the inner wall of the buffer groove. A limiting base plate is installed on one side of the outer protective cover, and the rotation of the blocking plate is restricted by the limiting base plate.

10. A concrete spraying device, characterized in that, Includes the concrete nozzle assembly as described in any one of claims 1 to 9.

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