Device for strengthening jet of deep foundation pit confluence soil

Abstract

The invention discloses a device for reinforcing jet of deep foundation pit concrete. The device comprises a lifting screw arranged in the center of a pipe wall and a lifting nut matched with the lifting screw. The rotating bracket is directly or indirectly connected with the lifting nut; the rotating shafts are arranged in the radial direction of the lifting screw, are kept on the rotating support, and are configured to rotate along the axes of the rotating shafts and revolve around the lifting screw; and the spinning disc is arranged at the other end of the rotating shaft. Multi-channel concrete spraying can be achieved, rotating operation can be carried out in the spraying process, concrete is evenly distributed around a foundation pit, the uniformity and consistency of the concrete are improved, lifting can be carried out according to needs while rotating is carried out, spraying at different heights and different positions is achieved, and the working flexibility is improved.

Description

Technical Field

[0001] The invention relates to the technical field of engineering construction, in particular to a device for strengthening concrete injection in a deep foundation pit. Background Art

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

[0003] The existing technology is usually single-channel shotcrete, which has poor concrete distribution uniformity and cannot be automatically raised and lowered as needed, limiting the flexibility and adaptability of construction. It lacks the function of spinning and shaping the sprayed concrete, resulting in low concrete density and inability to provide vibration function to make the concrete denser, affecting the stability and strength of the foundation pit. Summary of the Invention

[0004] In view of this, an object of the present invention is to provide a device for strengthening concrete injection in deep foundation pits.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A device for strengthening concrete injection in a deep foundation pit, comprising:

[0007] A lifting screw rod provided at the center of the pipe wall and a lifting nut matched with the lifting screw rod;

[0008] a rotating bracket directly or indirectly connected to the lifting nut;

[0009] One or more rotating shafts arranged along the radial direction of the lifting screw, the rotating shafts being held on the rotating bracket, and the rotating shafts being configured to rotate along their own axes and revolve around the lifting screw;

[0010] A spinning disc is arranged at the other end of the rotating shaft.

[0011] The above-mentioned device for strengthening deep foundation pit concrete injection, wherein, also includes: a first lifting bevel gear provided on the lifting nut, and a second lifting bevel gear provided on one end of the rotating shaft, the first lifting bevel gear and the second lifting bevel gear being meshed with each other.

[0012] The invention also includes: a first rotating bevel gear provided on the rotating shaft, and a second rotating bevel gear provided on the rotating bracket, wherein the first rotating bevel gear and the second rotating bevel gear are meshed with each other.

[0013] The above-mentioned device for strengthening the deep foundation pit concrete injection, wherein, further comprises: a driving mechanism, wherein the driving mechanism drives one of the rotating shafts to rotate;

[0014] The lifting nut is driven to rotate by the second lifting bevel gear and the first lifting bevel gear of one of the rotating shafts;

[0015] At the same time, the remaining rotating shafts are driven to rotate by the first lifting bevel gear and the second lifting bevel gears of the remaining rotating shafts;

[0016] At the same time, the first rotating bevel gear and the second rotating bevel gear drive the rotating bracket to drive the plurality of rotating shafts to revolve.

[0017] The above-mentioned device for strengthening deep foundation pit concrete injection, wherein the driving mechanism is a motor, a first power gear is provided on the rotating shaft, a second power gear is provided on the output shaft of the motor, and the first power gear is meshed with the second power gear.

[0018] In the above-mentioned device for strengthening concrete injection in deep foundation pits, the top of the lifting nut is rotatably connected to a support ring, and the support ring is provided with the rotating bracket.

[0019] In the above-mentioned device for strengthening concrete injection in deep foundation pits, an extrusion bracket is fixed to the bottom of the second rotating bevel gear, and an extrusion ring is fixed to the bottom of the extrusion bracket.

[0020] In the above-mentioned device for strengthening concrete injection in deep foundation pits, a first eccentric block for providing vibration is fixed on the other side of the motor away from the second power gear.

[0021] In the above-mentioned device for strengthening concrete injection in deep foundation pits, a second eccentric block for providing vibration is fixed on the other side of the first rotating bevel gear away from the lifting screw.

[0022] The above-mentioned device for strengthening the concrete injection of deep foundation pits further includes: a plurality of nozzles, each of which passes through the support ring, and a nozzle is provided at the end of each nozzle.

[0023] Due to the adoption of the above technology, the present invention has the following positive effects compared with the prior art:

[0024] (1) The present invention can realize multi-channel spraying of concrete. During the spraying process, the concrete can be rotated to evenly distribute the concrete around the foundation pit, thereby improving the uniformity and consistency of the concrete. While rotating, the concrete can be raised and lowered as needed to realize spraying at different heights and positions, thereby improving work flexibility.

[0025] (2) The present invention can vibrate, extrude and shape the concrete after spraying, making the concrete more stable, firm and uniform, improving the concrete strength and the bearing capacity of the foundation pit. The rotating device adopts a rotating shaft, bevel gears, etc., which can make the concrete rotate during the spraying process to achieve uniform distribution, reduce the spraying dead angle, reduce the finishing work, and improve the construction quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a partial cross-sectional schematic diagram of the device for strengthening the deep foundation pit concrete injection of the present invention.

[0027] Figure 2 It is a top view schematic diagram of the device for strengthening the deep foundation pit concrete injection of the present invention.

[0028] Figure 3 The invention is a device for strengthening the deep foundation pit concrete injection Figure 2 AA section view in.

[0029] Figure 4 The invention is a device for strengthening the deep foundation pit concrete injection Figure 2 BB cross-section view in.

[0030] Figure 5 The invention is a device for strengthening the deep foundation pit concrete injection Figure 3 CC section view in.

[0031] Figure 6 The invention is a device for strengthening the deep foundation pit concrete injection Figure 3 The enlarged schematic diagram of point D in FIG.

[0032] Figure 7 It is a schematic diagram of a device for strengthening concrete injection in a deep foundation pit according to the present invention.

[0033] In the accompanying drawings: 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 disk; 15. extrusion bracket; 16. extrusion ring; 17. first eccentric block; 18. second eccentric block; 19. nozzle; 20. nozzle. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “inside”, “outside”, “front”, “back”, “horizontal” and “vertical” are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or component referred to must have a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] It should be noted that the terms “horizontal” and “vertical” in the present invention are used to illustrate a rough positional relationship, rather than a strict “horizontal plane” or “vertical plane”.

[0037] See Figures 1 to 7 As shown, a preferred embodiment of a device for strengthening deep foundation pit concrete injection is shown, including: a lifting screw 2 arranged at the center of the pipe wall 1, and a lifting nut 3 matching the lifting screw 2, wherein the lifting nut 3 can rotate on the lifting screw 2 to achieve the overall rise or fall of the lifting nut 3 and other accessories connected to the lifting nut 3.

[0038] Furthermore, as a preferred embodiment, it further includes: a rotating bracket 6 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 can also be configured to be directly connected to the lifting nut 3, or formed integrally with the support ring 5.

[0039] Furthermore, as a preferred embodiment, the system further comprises one or more rotating shafts 7 arranged radially along the lifting screw 2. The rotating shafts 7 are held on the rotating bracket 6 and are configured to rotate along their own axes and revolve around the lifting screw 2. In this embodiment, the rotating shafts 7 are arranged generally horizontally and form a circular array around the lifting screw 2. The preferred number of rotating shafts 7 is four, but more is possible.

[0040] Furthermore, as a preferred embodiment, it further comprises: a spinning disk 14 provided at the other end of the rotating shaft 7, wherein the spinning disk 14 has a spinning surface, especially a spinning surface in the form of an arc.

[0041] When the height of the lifting nut 3 is adjusted, the rotating bracket 6 will also rotate in coordination therewith, so that simultaneous lifting and rotation can be achieved during the concrete spraying process, so that the concrete is evenly distributed and a better shaping effect is obtained.

[0042] As the device rotates, the spinning disc 14 applies a compressive force to the concrete, making it more compact and firm.

[0043] Furthermore, as a preferred embodiment, it also includes: a first lifting bevel gear 4 provided on the lifting nut 3, and a second lifting bevel gear 8 provided at one end of the rotating shaft 7, and the first lifting bevel gear 4 is meshed with the second lifting bevel gear 8.

[0044] Specifically, the rotating shaft 7 rotates to drive the second lifting bevel gear 8 to rotate, and the first lifting bevel gear 3 is reversed to realize the rotation of the lifting nut 3, thereby driving the lifting nut 3 to rise or fall.

[0045] More specifically, as the first lifting bevel gear 3 rotates, the other second lifting bevel gears 8 meshing with the first lifting bevel gear 3 also rotate, so that only one driving mechanism is needed to drive one of the rotating shafts 7 to achieve synchronous rotation of all the rotating shafts 7.

[0046] Furthermore, as a preferred embodiment, it further comprises: a first rotating bevel gear 9 provided on the rotating shaft 7 and a second rotating bevel gear 10 provided on the rotating bracket 6 , and the first rotating bevel gear 9 and the second rotating bevel gear 10 are meshed with each other.

[0047] Specifically, the rotating shaft 7 rotates to drive the first rotating bevel gear 9 to rotate, and the second rotating bevel gear 10 is reversed to realize the rotation of the rotating bracket 6, thereby causing the rotation of the support ring 5, thereby driving all the rotating brackets 6 to rotate synchronously, and further driving all the rotating shafts 7 to revolve.

[0048] Furthermore, as a preferred embodiment, the present invention further comprises a driving 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. Simultaneously, the first lifting bevel gear 4 and the second lifting bevel gears 8 of the remaining rotating shafts drive the remaining rotating shafts 7 to rotate. Simultaneously, the first rotating bevel gear 9 and the second rotating bevel gear 10 drive the rotating bracket 6 to drive the plurality of rotating shafts 7 to revolve.

[0049] Furthermore, as a preferred embodiment, the driving mechanism is a motor 11 , a first power gear 13 is provided on the rotating shaft 7 , a second power gear 12 is provided on the output shaft of the motor 11 , and the first power gear 13 is meshed with the second power gear 12 .

[0050] Specifically, the motor shaft of the motor 11 rotates to drive the second power gear 12 to rotate, thereby driving the first power gear 13 to rotate, thereby driving the rotating shaft 7 to rotate.

[0051] Furthermore, as a preferred embodiment, the top of the lifting nut 3 is rotatably connected to a support ring 5 , and a rotating bracket 6 is provided on the support ring 5 .

[0052] Specifically, the support ring 5 is an annular structure, arranged horizontally and held on the lifting nut 3, and can rotate freely relative to the lifting nut 3. The rotating bracket 6 is a plate-like structure or a block-like structure, which includes multiple brackets, all of which are connected to the support ring 5, especially to the lower surface of the support ring 5.

[0053] 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.

[0054] Furthermore, as a preferred embodiment, an extrusion bracket 15 is fixed to the bottom of the second rotating bevel gear 10, and an extrusion ring 16 is fixed to the bottom of the extrusion bracket 15. The presence of the extrusion ring 16 ensures that the extrusion force can act evenly on the concrete, thereby achieving a more uniform extrusion effect, improving the density and uniformity of the concrete, and achieving uniform distribution of the extrusion force within the working range of the device.

[0055] 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 is against the pipe wall 1 .

[0056] The fixed connection between the extrusion bracket 15 and the bottom of the second rotating bevel gear 10 ensures the uniform application of the extrusion force. By adding the vibration function, the density and uniformity of the concrete can be further improved.

[0057] Furthermore, as a preferred embodiment, a first eccentric mass 17 for providing vibration is fixed to the other side of the motor 11 away from the second power gear 12 .

[0058] Furthermore, as a preferred embodiment, a second eccentric block 18 for providing vibration is fixed to the other side of the first rotating bevel gear 9 away from the lifting screw 2 .

[0059] The first eccentric mass 17 and the second eccentric mass 18 provide vibration for the entire device, thereby improving the extrusion quality and the uniformity of the concrete.

[0060] Specifically, the first eccentric mass 17 and the second eccentric mass 18 are arranged eccentrically relative to the center of the rotating bracket 6 .

[0061] Furthermore, as a preferred embodiment, it further comprises: a plurality of nozzles 19 , each nozzle 19 passes through the support ring 5 , and a nozzle 20 is provided at the end of each nozzle 19 .

[0062] Specifically, the nozzle 20 is a fan-shaped nozzle, which can evenly distribute concrete around the foundation pit through multiple nozzles 19, thereby improving the spraying efficiency and construction speed. A nozzle 20 is fixed at the end of each nozzle 19. The nozzle 20 is a fan-shaped nozzle, which can achieve uniform spraying distribution. The design of the fan-shaped nozzle can ensure that the sprayed concrete evenly covers the target area, so that the concrete is evenly solidified and enhanced, thereby improving the stability and strength of the structure.

[0063] More specifically, there is a gap between every two adjacent rotating shafts 7 , and a nozzle 20 is arranged between every two adjacent rotating shafts 7 .

[0064] More specifically, the nozzle 19 has a curved portion. One end of the nozzle 19 located above the support ring 5 is arranged substantially vertically. The other end of the nozzle 19 is curved and arranged horizontally. The nozzle 20 is also arranged horizontally.

[0065] The above description is only a preferred embodiment of the present invention and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for strengthening concrete injection in deep foundation pits, characterized in that: include: A lifting screw rod provided at the center of the pipe wall and a lifting nut matched with the lifting screw rod; a rotating bracket directly or indirectly connected to the lifting nut; One or more rotating shafts arranged along the radial direction of the lifting screw, the rotating shafts being held on the rotating bracket, and the rotating shafts being configured to rotate along their own axes and revolve around the lifting screw; A spinning disc is arranged at the other end of the rotating shaft.

2. The device for strengthening concrete injection in deep foundation pits according to claim 1, characterized in that: Also includes: A first lifting bevel gear is provided on the lifting nut, and a second lifting bevel gear is provided on one end of the rotating shaft, and the first lifting bevel gear is meshed with the second lifting bevel gear.

3. The device for strengthening concrete injection in deep foundation pits according to claim 2, characterized in that: Also includes: A first rotating bevel gear is provided on the rotating shaft, and a second rotating bevel gear is provided on the rotating bracket. The first rotating bevel gear and the second rotating bevel gear are meshed with each other.

4. The device for strengthening concrete injection in deep foundation pits according to claim 3, characterized in that: Also includes: a driving mechanism, wherein the driving mechanism 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 of one of the rotating shafts; At the same time, the remaining rotating shafts are driven to rotate by the first lifting bevel gear and the second lifting bevel gears of the remaining rotating shafts; At the same time, the first rotating bevel gear and the second rotating bevel gear drive the rotating bracket to drive the plurality of rotating shafts to revolve.

5. The device for strengthening concrete injection in deep foundation pits according to claim 4, characterized in that: The driving mechanism is a motor, a first power gear is provided on the rotating shaft, a second power gear is provided on the output shaft of the motor, and the first power gear is meshed with the second power gear.

6. The device for strengthening concrete injection in deep foundation pits according to claim 5, 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.

7. The device for strengthening concrete injection in deep foundation pits according to claim 6, characterized in that: An extrusion bracket is fixed to the bottom of the second rotating bevel gear, and an extrusion ring is fixed to the bottom of the extrusion bracket.

8. The device for strengthening concrete injection in deep foundation pits according to claim 7, characterized in that: A first eccentric mass for providing vibration is fixed on the other side of the motor away from the second power gear.

9. The device for strengthening concrete injection in deep foundation pits according to claim 8, characterized in that: A second eccentric block for providing vibration is fixed on the other side of the first rotating bevel gear away from the lifting screw.

10. The device for strengthening concrete injection in deep foundation pits according to claim 9, characterized in that: Also includes: A plurality of nozzles are provided, each of the nozzles passes through the support ring, and a nozzle is provided at the end of each nozzle.

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