A device for enhancing the spraying of concrete in deep foundation pits

Abstract

This invention discloses a device for enhancing shotcrete spraying in deep foundation pits, comprising: a lifting screw located at the center of the pipe wall; a lifting nut matching the lifting screw; a rotating support directly or indirectly connected to the lifting nut; one or more rotating shafts arranged radially along the lifting screw, the rotating shafts being held on the rotating support, the rotating shafts being configured to rotate on their own axis and revolve around the lifting screw; and a spinning disc located at the other end of the rotating shafts. This invention enables multi-channel shotcreting, allowing for rotational operation during spraying to ensure uniform concrete distribution around the foundation pit, improving the uniformity and consistency of the concrete. Simultaneously, the device can be raised and lowered as needed to achieve spraying at different heights and positions, increasing operational flexibility.

Description

Technical Field

[0001] This invention relates to the technical field of engineering construction, and in particular to a device for enhancing the spraying of concrete in deep foundation pits. Background Technology

[0002] A concrete spraying device is a piece of equipment used in engineering construction to spray concrete. Its function is to push concrete into the structure or foundation that needs to be reinforced by compressed air or hydraulic pressure, so as to enhance its strength and stability. Its main function is to reinforce the structure. The concrete spraying device pushes concrete onto the surface of the structure that needs to be reinforced, such as the walls of the foundation pit, ramps, tunnel walls, etc., by spraying concrete at high speed. This can form a solid concrete layer, improving the stability and compressive strength of the structure.

[0003] Existing technologies typically employ single-channel shotcrete, resulting in poor concrete distribution uniformity. The inability to automatically raise and lower the concrete as needed limits construction flexibility and adaptability. Furthermore, the lack of a function to spin and shape the sprayed concrete leads to low concrete density. The inability to provide vibration support further compresses the concrete, impacting the stability and strength of the foundation pit. Summary of the Invention

[0004] In view of this, the object of the present invention is to provide an apparatus for enhancing the spraying of concrete in deep foundation pits.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: An apparatus for enhancing concrete spraying in deep foundation pits, comprising: A lifting screw located at the center of the pipe wall, and a lifting nut that matches the lifting screw; A rotating bracket that is directly or indirectly connected to the lifting nut; One or more rotating shafts are arranged radially along the lifting screw, the rotating shafts are held on the rotating support, and the rotating shafts are configured to rotate on their own axis and revolve around the lifting screw; A spinning disc is located at the other end of the rotating shaft.

[0006] The aforementioned device for enhancing concrete spraying in deep foundation pits further includes: a first lifting bevel gear disposed on the lifting nut and a second lifting bevel gear disposed at one end of the rotating shaft, wherein the first lifting bevel gear meshes with the second lifting bevel gear.

[0007] It also includes: a first rotating bevel gear disposed on the rotating shaft and a second rotating bevel gear disposed on the rotating support, wherein the first rotating bevel gear and the second rotating bevel gear mesh with each other.

[0008] The aforementioned device for enhancing concrete spraying in deep foundation pits further includes: a drive mechanism that drives one of the rotating shafts to rotate. The lifting nut is driven to rotate by the second lifting bevel gear and the first lifting bevel gear through one of the rotating shafts; Simultaneously, the first lifting bevel gear and the second lifting bevel gear of the remaining shafts drive the other shafts to rotate. Meanwhile, the first rotating bevel gear and the second rotating bevel gear drive the rotating bracket to rotate the several rotating shafts.

[0009] The aforementioned device for enhancing concrete spraying in deep foundation pits includes a drive mechanism that is a motor, a first power gear on the rotating shaft, and a second power gear on the output shaft of the motor, wherein the first power gear meshes with the second power gear.

[0010] In the aforementioned device for enhancing concrete spraying in deep foundation pits, a support ring is rotatably connected to the top of the lifting nut, and the rotating bracket is provided on the support ring.

[0011] In the aforementioned device for enhancing concrete spraying in deep foundation pits, a compression bracket is fixed to the bottom of the second rotating bevel gear, and a compression ring is fixed to the bottom of the compression bracket.

[0012] In the aforementioned device for enhancing concrete spraying in deep foundation pits, a first eccentric block for providing vibration is fixed on the side of the motor away from the second power gear.

[0013] In the aforementioned device for enhancing concrete spraying in deep foundation pits, a second eccentric block for providing vibration is fixed on the side of the first rotating bevel gear away from the lifting screw.

[0014] The aforementioned device for enhancing concrete spraying in deep foundation pits further includes: multiple spray pipes, each of which penetrates the support ring, and each of which has a nozzle at its end.

[0015] The present invention, by employing the above-mentioned technology, has the following positive effects compared with the prior art: This invention enables multi-channel shotcreting, allowing for rotation during the spraying process to ensure even distribution of concrete around the foundation pit, thus improving the uniformity and consistency of the concrete. Simultaneously, the concrete can be raised and lowered as needed to achieve spraying at different heights and positions, enhancing operational flexibility.

[0016] This invention can vibrate, compress, and shape the sprayed concrete, making it more stable, firm, and uniform, thereby improving its strength and the bearing capacity of the foundation pit. The rotating device uses a rotating shaft, bevel gears, etc., which can make the concrete rotate during the spraying process, achieving uniform distribution, reducing spraying dead angles, reducing finishing work, and improving construction quality and efficiency. Attached Figure Description

[0017] Figure 1 This is a partial cross-sectional schematic diagram of the device for enhancing the spraying of concrete in deep foundation pits according to the present invention.

[0018] Figure 2 This is a top view schematic diagram of the device for enhancing concrete spraying in deep foundation pits according to the present invention.

[0019] Figure 3 This invention relates to a device for enhancing the spraying of concrete in deep foundation pits. Figure 2 AA section view in the image.

[0020] Figure 4 This invention relates to a device for enhancing the spraying of concrete in deep foundation pits. Figure 2 BB section view in the middle.

[0021] Figure 5 This invention relates to a device for enhancing the spraying of concrete in deep foundation pits. Figure 3 CC section view in the image.

[0022] Figure 6 This invention relates to a device for enhancing the spraying of concrete in deep foundation pits. Figure 3 Enlarged diagram of point D in the diagram.

[0023] Figure 7 This is a schematic diagram of the device for enhancing the spraying of concrete in deep foundation pits according to the present invention.

[0024] In the attached diagram: 1. Pipe wall; 2. Lifting screw; 3. Lifting nut; 4. First lifting bevel gear; 5. Support ring; 6. Rotating bracket; 7. Rotating shaft; 8. Second lifting bevel gear; 9. First rotating bevel gear; 10. Second rotating bevel gear; 11. Motor; 12. Second power gear; 13. First power gear; 14. Spinning disc; 15. Extrusion bracket; 16. Extrusion ring; 17. First eccentric block; 18. Second eccentric block; 19. Nozzle; 20. Nozzle head. Detailed Implementation

[0025] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] In the description of this invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "lateral", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this invention.

[0027] It should be noted that the terms "horizontal" and "vertical" in this invention are used to describe approximate positional relationships, and not strictly "horizontal plane" or "vertical plane".

[0028] Please see Figures 1 to 7 As shown, a preferred embodiment of a device for enhancing deep foundation pit concrete spraying is illustrated, comprising: a lifting screw 2 disposed at the center of the pipe wall 1, and a lifting nut 3 matching the lifting screw 2, wherein the lifting nut 3 is rotatable on the lifting screw 2 to achieve the overall raising or lowering of the lifting nut 3 and other accessories connected to the lifting nut 3.

[0029] Furthermore, as a preferred embodiment, it also includes a rotating bracket 6 that is directly or indirectly connected to the lifting nut 3. In this embodiment, the rotating bracket 6 is indirectly connected to the lifting nut 3 via a support ring 5. In other embodiments, the rotating bracket 6 may also be configured to be directly connected to the lifting nut 3, or integrally formed with the support ring 5.

[0030] Furthermore, as a preferred embodiment, it further includes: one or more rotating shafts 7 arranged radially along the lifting screw 2, the rotating shafts 7 being held on the rotating bracket 6, and the rotating shafts 7 being configured to rotate on their own axis and revolve around the lifting screw 2. In this embodiment, the rotating shafts 7 are arranged substantially horizontally and in a circular array around the lifting screw 2, preferably four, but more are also possible.

[0031] Furthermore, as a preferred embodiment, it also includes a spinning disk 14 disposed at the other end of the rotating shaft 7, wherein the spinning disk 14 has a spinning surface, particularly a curved spinning surface.

[0032] When the lifting nut 3 adjusts the height, the rotating bracket 6 will also rotate accordingly, which can realize simultaneous lifting and rotation during the concrete spraying process, so that the concrete is evenly distributed and achieves a better shaping effect.

[0033] As the device rotates, the spinning disc 14 applies pressure to the concrete, making it denser and stronger.

[0034] Furthermore, as a preferred embodiment, it also includes: a first lifting bevel gear 4 disposed on the lifting nut 3, and a second lifting bevel gear 8 disposed at one end of the rotating shaft 7, wherein the first lifting bevel gear 4 and the second lifting bevel gear 8 mesh with each other.

[0035] Specifically, the rotating shaft 7 rotates to drive the second lifting bevel gear 8 to rotate, and the first lifting bevel gear 3 reverses direction to realize the rotation of the lifting nut 3, thereby driving the lifting nut 3 to rise or fall.

[0036] More specifically, as the first lifting bevel gear 3 rotates, the other second lifting bevel gears 8 that mesh with the first lifting bevel gear 3 also rotate, so that only one drive mechanism is needed to drive one of the rotating shafts 7 to achieve synchronous rotation of all the rotating shafts 7.

[0037] Furthermore, as a preferred embodiment, it also includes: a first rotating bevel gear 9 disposed on the rotating shaft 7 and a second rotating bevel gear 10 disposed on the rotating support 6, wherein the first rotating bevel gear 9 and the second rotating bevel gear 10 mesh with each other.

[0038] Specifically, the rotation of the shaft 7 drives the first rotating bevel gear 9 to rotate, and the second rotating bevel gear 10 reverses the direction to realize the rotation of the rotating bracket 6, which causes the support ring 5 to rotate, thereby driving all the rotating brackets 6 to rotate synchronously, and further driving all the shafts 7 to revolve.

[0039] Furthermore, as a preferred embodiment, it further includes a drive mechanism that drives one of the rotating shafts 7 to rotate. Specifically, the second lifting bevel gear 8 and the first lifting bevel gear 4 of one of the rotating shafts 7 drive the lifting nut 3 to rotate. At the same time, the first lifting bevel gear 4 and the second lifting bevel gear 8 of the other rotating shafts drive the remaining rotating shafts 7 to rotate. Meanwhile, the first rotating bevel gear 9 and the second rotating bevel gear 10 drive the rotating bracket 6 to rotate the plurality of rotating shafts 7.

[0040] Furthermore, as a preferred embodiment, the driving mechanism is a motor 11, a first power gear 13 is provided on the rotating shaft 7, and a second power gear 12 is provided on the output shaft of the motor 11, with the first power gear 13 meshing with the second power gear 12.

[0041] Specifically, the motor shaft of motor 11 rotates to drive the second power gear 12 to rotate, which in turn drives the first power gear 13 to rotate, thereby causing the rotating shaft 7 to rotate.

[0042] Furthermore, as a preferred embodiment, the top of the lifting nut 3 is rotatably connected to a support ring 5, and the support ring 5 is provided with a rotating bracket 6.

[0043] Specifically, the support ring 5 has a ring-shaped structure, is horizontally arranged and held on the lifting nut 3, and can rotate freely relative to the lifting nut 3. The rotating bracket 6 has a plate-shaped or block-shaped structure, and includes multiple brackets, all of which are connected to the support ring 5, especially to the lower surface of the support ring 5.

[0044] More specifically, each rotating shaft 7 passes through a rotating bracket 6 and allows the rotating shaft 7 to rotate freely relative to the rotating bracket 6, wherein the rotating bracket 6 is used to maintain the position of the rotating shaft 7 and to drive the rotating shaft 7 to revolve.

[0045] Furthermore, as a preferred embodiment, the bottom of the second rotating bevel gear 10 is fixed with an extrusion bracket 15, and the bottom of the extrusion bracket 15 is fixed with an extrusion ring 16. The presence of the extrusion ring 16 ensures that the extrusion force can be applied evenly to the concrete, thereby achieving a more uniform extrusion effect, improving the density and uniformity of the concrete, and enabling the extrusion force to be evenly distributed within the working range of the device.

[0046] Specifically, the extrusion ring 16 has a ring-shaped structure. In this embodiment, the inner wall of the extrusion ring 16 is connected to the outer wall of the extrusion bracket 15, and the outer wall of the extrusion ring 16 abuts against the tube wall 1.

[0047] The fixed connection between the extrusion bracket 15 and the bottom of the second rotating bevel gear 10 ensures the uniform application of extrusion force. The addition of vibration function can further improve the compactness and uniformity of concrete.

[0048] Furthermore, as a preferred embodiment, a first eccentric block 17 for providing vibration is fixed on the side of the motor 11 away from the second power gear 12.

[0049] Furthermore, as a preferred embodiment, a second eccentric block 18 for providing vibration is fixed on the side of the first rotating bevel gear 9 away from the lifting screw 2.

[0050] The first eccentric block 17 and the second eccentric block 18 provide vibration for the entire device, thereby improving the extrusion quality and the uniformity of the concrete.

[0051] Specifically, the first eccentric block 17 and the second eccentric block 18 are arranged eccentrically relative to the center of the rotating support 6.

[0052] Furthermore, as a preferred embodiment, it also includes: a plurality of nozzles 19, each nozzle 19 passing through the support ring 5, and each nozzle 19 having a nozzle 20 at its end.

[0053] Specifically, the nozzle 20 is a fan-shaped nozzle. Multiple nozzles 19 can evenly distribute concrete around the foundation pit, improving spraying efficiency and construction speed. Each nozzle 19 is fixed with a nozzle 20 at its end. The nozzle 20 is a fan-shaped nozzle, which can achieve uniform spraying distribution. The fan-shaped nozzle design can ensure that the sprayed concrete evenly covers the target area, so that the concrete is uniformly cured and strengthened, improving the stability and strength of the structure.

[0054] More specifically, there is a gap between each pair of adjacent rotating shafts 7, and a nozzle 20 is arranged between each pair of adjacent rotating shafts 7.

[0055] More specifically, the nozzle 19 has a curved portion, with one end of the nozzle 19 located above the support ring 5 arranged in a generally vertical direction, and the other end of the nozzle 19 curved and arranged in a horizontal direction, and the nozzle 20 is also arranged in a horizontal direction.

[0056] The above description is merely a preferred embodiment of the present invention and does not limit the implementation and protection scope of the present invention. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for enhancing concrete spraying in deep foundation pits, characterized in that, include: A lifting screw located at the center of the pipe wall, and a lifting nut that matches the lifting screw; A rotating bracket that is directly or indirectly connected to the lifting nut; One or more rotating shafts are arranged radially along the lifting screw, the rotating shafts are held on the rotating support, and the rotating shafts are configured to rotate on their own axis and revolve around the lifting screw; A spinning disc located at the other end of the rotating shaft; A first lifting bevel gear is provided on the lifting nut, and a second lifting bevel gear is provided at one end of the rotating shaft, wherein the first lifting bevel gear and the second lifting bevel gear mesh. A first rotating bevel gear is provided on the rotating shaft, and a second rotating bevel gear is provided on the rotating support, wherein the first rotating bevel gear and the second rotating bevel gear mesh with each other; It also includes: a drive mechanism that drives one of the shafts to rotate; The lifting nut is driven to rotate by the second lifting bevel gear and the first lifting bevel gear through one of the rotating shafts; Simultaneously, the first lifting bevel gear and the second lifting bevel gear of the remaining shafts drive the other shafts to rotate. Meanwhile, the first rotating bevel gear and the second rotating bevel gear drive the rotating bracket to rotate the several rotating shafts.

2. The device for enhancing deep foundation pit concrete spraying according to claim 1, characterized in that, The driving mechanism is a motor, the rotating shaft is provided with a first power gear, and the output shaft of the motor is provided with a second power gear, the first power gear and the second power gear meshing.

3. The device for enhancing deep foundation pit concrete spraying according to claim 2, characterized in that, The top of the lifting nut is rotatably connected to a support ring, and the support ring is provided with the rotating bracket.

4. The device for enhancing deep foundation pit concrete spraying according to claim 3, characterized in that, The bottom of the second rotating bevel gear is fixed with a compression bracket, and the bottom of the compression bracket is fixed with a compression ring.

5. The device for enhancing deep foundation pit concrete spraying according to claim 4, characterized in that, A first eccentric block for providing vibration is fixed on the side of the motor away from the second power gear.

6. The device for enhancing concrete spraying in deep foundation pits according to claim 5, characterized in that, A second eccentric block for providing vibration is fixed on the side of the first rotating bevel gear away from the lifting screw.

7. The device for enhancing concrete spraying in deep foundation pits according to claim 6, characterized in that, Also includes: Multiple nozzles, each of which passes through the support ring, and each of which has a nozzle at its end.

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