High-pressure jet grouting pile
By automatically controlling the switch of the spray hole by using a baffle and toggle structure in the high-pressure rotary spray pile, the problem of the spraying forming a hard soil layer on the ground is solved, and the convenience of construction and the stability of the spray hole are achieved.
Patent Information
- Application Number
- CN202323528493.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-23
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2033-12-23
AI Technical Summary
The spraying of existing high-pressure rotary spray piles during idle rotation will form a harder soil layer on the ground, resulting in inconvenience in construction.
A high-pressure rotary spray pile is designed, adopting a baffle and a toggle structure, and a baffle is installed at the spray hole. The friction between the toggle and the side wall of the drill bit makes the baffle open and close the spray hole to ensure spraying. The slurry can only be sprayed when needed to reduce the inconvenience caused to the staff by spraying during idle rotation.
It effectively avoids the formation of hard soil layer on the ground by spraying, provides more convenient construction conditions, and ensures the stability and smoothness of the spray hole through automatic switching function.
Smart Images
Figure CN222206304U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of construction engineering, and in particular to a high-pressure jet grouting pile. Background Art
[0002] At present, with the development of society, people's demand for housing is increasing. High-pressure rotary jet piles used to reinforce the foundations of existing buildings and new buildings have come into people's attention. High-pressure rotary jet piles are a more practical type of high-pressure rotary jet piles.
[0003] During the construction of existing jet grouting piles, in order to prevent mud or soil debris from squeezing into the grouting hole due to soil pressure and blocking the grouting hole or even the entire drill rod, the workers first let the high-pressure jet grouting piles run idle before construction.
[0004] With respect to the above-mentioned related technologies, during the idling process of the high-pressure rotary jet grouting piles, the grout sprayed from the high-pressure rotary jet grouting piles will form a harder soil layer on the ground. The inventor believes that the presence of a harder soil layer on the ground will cause inconvenience to the construction. Utility Model Content
[0005] In order to prevent the grouting of high-pressure jet grouting piles during idling from causing inconvenience to construction workers, the present application provides a high-pressure jet grouting pile.
[0006] The high-pressure jet grouting pile provided in this application adopts the following technical solution:
[0007] A high-pressure rotary jet pile includes a drill rod and a drill bit, the top of the drill bit is fixedly connected to the bottom of the drill rod, a grouting pipe is arranged in the drill rod, a placement groove is opened along the side wall of the drill bit toward its own center direction, a grouting hole is opened on the side of the placement groove away from the port of the drill bit, the grouting hole is connected with the grouting pipe, the grouting hole is connected with the placement groove, a baffle is arranged in the placement groove of the drill bit, the baffle is slidably connected to the drill bit along the length direction of the placement groove, and a toggle member for toggling the baffle is fixedly arranged on the side of the baffle close to the port of the placement groove.
[0008] By adopting the above technical scheme, when the high-pressure rotary jet grouting pile is idling, the baffle blocks the grouting hole. When the high-pressure rotary jet grouting pile is rotating, the friction between the toggle piece and the gravel around the side wall of the drill bit causes the baffle to open and the grouting hole to open. When the above technology is used, the grouting hole can be effectively opened and closed according to whether the high-pressure rotary jet grouting pile is working, thereby effectively reducing the inconvenience caused to the construction workers by the grouting generated when the high-pressure rotary jet grouting pile is idling.
[0009] Optionally, a sealing gasket is fixedly provided on the side of the baffle away from the toggle member, and the sealing gasket abuts against the drill bit at the bottom of the placement groove.
[0010] By adopting the above technical solution and fixing a sealing pad at the bottom of the baffle, the inconvenience caused to the construction workers by the grouting generated when the high-pressure rotary jet pile is idling can be further reduced.
[0011] Optionally, the drill bit is provided with sliding grooves on the side walls on both sides of the baffle along the sliding direction of the baffle, and the drill bit is provided with a sliding component for moving the baffle at the sliding groove.
[0012] By adopting the above technical solution, when the grouting of the high-pressure jet grouting pile needs to be sprayed out, the sliding component drives the baffle to move along the length direction of the placement groove. Through the above technology, the opening and closing functions of the baffle are effectively realized.
[0013] Optionally, the sliding assembly includes two sliders and two sliding rods, the two sliders are respectively fixedly connected to the two side walls of the baffle along the sliding direction, two slide grooves are opened, the two slide grooves are respectively located on both sides of the baffle, the two sliders are respectively fixedly connected to the two sides of the baffle, and the sliders are slidably adapted to the slide grooves, the two sliding rods are arranged in the two slide grooves along the length direction of the slide grooves, and both ends of the sliding rods are fixedly connected to the inner walls of the drill bit at both ends of the slide groove, and the slider and the slide rod are slidably connected along the axial direction of the slide rod.
[0014] By adopting the above technical solution, when the baffle slides, the two sliders are slidably connected with the drill bit in the slide groove along the length direction of the slide groove, and the two sliders slide with the two slide rods along the axial direction of the slide rods respectively. Through the above technology, the stability of the baffle movement is further improved.
[0015] Optionally, a return spring is arranged around the circumference of the slide rod, one end of the return spring is fixedly connected to the drill bit at the side wall of the slide groove, and one end of the return spring away from the side wall of the slide groove is fixedly connected to the slide block.
[0016] By adopting the above technical solution, when the high-pressure rotary jet pile is idling and rotating, the reset spring is in an uncompressed state, and the baffle blocks the grouting hole. When the high-pressure rotary jet pile is working, the friction between the side wall of the drill bit and the surrounding gravel causes the baffle to open and the spring is in a compressed state. After the high-pressure rotary jet pile completes its work, the spring returns to a relaxed state. Through the above technology, the function of automatic opening and closing of the baffle is realized.
[0017] Optionally, an accordion cover is provided at the opening of the slide slot, one end of the accordion cover is fixedly connected to the side wall of the slide slot, and one end of the accordion cover away from the side wall of the slide slot is fixedly connected to the sliding block.
[0018] By adopting the above technical solution, the accordion cover shields the slide groove, making it difficult for external debris to appear in the slide groove, thereby improving the convenience of sliding the baffle.
[0019] Optionally, both ends of the baffle along the moving direction are fixed with inclined plates, the inclined plates gradually move away from the baffle along the port of the placement groove toward the center thereof, and the inclined plates abut against the drill bit at the bottom of the placement groove.
[0020] By adopting the above technical solution, under the action of the inclined plate, the staff can clean out the debris entering the placement groove from the outside by moving the baffle, so that the baffle is not easily blocked during the movement.
[0021] Optionally, the drill bit is provided with an oblique groove at one end of the placement groove away from the return spring, and the oblique groove is plug-fitted with the oblique plate.
[0022] By adopting the above technical solution, after the inclined plate is inserted into the inclined groove, under the action of the inclined groove, the blocking of the spraying hole by the baffle is made more stable.
[0023] In summary, the present application includes at least one of the following beneficial technical effects:
[0024] 1. By shielding the grouting hole with the baffle, when the high-pressure rotary jet pile is idling, the slurry in the grouting hole cannot be sprayed directly onto the ground, thus preventing the slurry from forming a harder soil layer on the ground; the above structure provides convenience for the staff.
[0025] 2. Under the action of the friction between the side wall of the drill bit and the soil layer, the toggle piece drives the baffle to slide along the length direction of the placement groove away from the inclined groove, and then the reset spring pushes the slider to slide along the length direction of the placement groove close to the inclined groove; through the above technology, the effect of automatic opening and closing of the baffle is effectively achieved. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 This is a schematic diagram of the structure of a high-pressure jet grouting pile in an embodiment of the present application;
[0027] Figure 2 This is a cross-sectional view of a high-pressure rotary jet pile in an embodiment of the present application to reflect the internal structure of a placement groove;
[0028] Figure 3 It is a structural schematic diagram of a high-pressure rotary jet pile in an embodiment of the present application to reflect the internal structure of the sliding device.
[0029] In the figure, 1. drill rod; 11. spraying pipe; 2. drill bit; 21. placement groove; 211. spraying hole; 212. slide groove; 213. inclined groove; 3. baffle; 31. toggle member; 32. sealing gasket; 33. inclined plate; 4. sliding assembly; 41. slider; 42. slide rod; 5. reset spring; 6. accordion cover. DETAILED DESCRIPTION
[0030] The following is combined with Figure 1-3 This application is described in further detail.
[0031] The embodiment of the present application discloses a high-pressure jet grouting pile.
[0032] refer to Figure 1 A high-pressure jet grouting pile includes a drill rod 1 and a drill bit 2. One end of the drill rod 1 is fixedly connected to the drill bit 2. A grouting pipe 11 is arranged in the drill rod 1. The drill bit 2 is provided with a placement groove 21 along the side wall toward the center thereof.
[0033] refer to Figure 2 and Figure 3 The drill bit 2 is provided with a grouting hole 211 on the side of the placement groove 21 away from the port, the grouting hole 211 is connected to the grouting pipe 11, and one end of the grouting hole 211 away from the grouting pipe 11 is connected to the placement groove 21. The drill bit 2 is slidably connected with a baffle 3 on the bottom wall of the placement groove 21, and the baffle 3 slides horizontally along the length direction of the placement groove 21. A toggle member 31 is fixed on the side of the baffle 3 close to the port. The drill bit 2 is provided with a slide groove 212 on the side walls of both sides of the baffle 3 along the sliding direction of the baffle 3. The drill bit 2 is provided with a sliding component 4 at both slide grooves 212. Inclined plates 33 are fixedly provided at both ends of the baffle 3 along the moving direction. The inclined plates 33 gradually move away from the baffle 3 along the end of the placement groove 21 toward its own center. The side of the inclined plate 33 away from the end abuts against the side of the drill bit 2 at the placement groove 21 away from the end. The drill bit 2 is provided with an inclined groove 213 on the side of the placement groove 21 close to the spraying hole 211, and the inclined plate 33 is plugged and adapted to the inclined groove 213.
[0034] When the high-pressure rotary jet pile is working, the toggle member 31 generates friction with the soil layer around the drill bit 2, and the toggle member 31 drives the baffle plate 3 to slide along the length direction of the placement groove 21, so that the baffle plate 3 drives the sliding assembly 4 to slide along the length direction of the slide groove 212. During the sliding process, the inclined plates 33 on both sides of the baffle plate 3 clean up the debris at the bottom of the placement groove 21. After the baffle plate 3 is away from the grouting hole 211, the grouting hole 211 is opened.
[0035] refer to Figure 3 The sliding device includes two sliders 41 and two sliding rods 42. The two sliders 41 are fixedly connected to both sides of the baffle 3, and the two sliders 41 are slidably adapted to the drill bit 2 at the two slide grooves 212. The slider 41 is slidably connected to the sliding rod 42 along the length direction of the slide groove 212. The sliding rod 42 is placed in the slide groove 212 along the length direction of the slide groove 212, and both ends of the sliding rod 42 are fixedly connected to the inner walls at both ends of the slide groove 212. A return spring 5 is surrounded by the outside of the slide rod 42, and the return spring 5 is fixedly connected to one end of the slider 41. The return spring 5 is fixedly connected to the drill bit 2 at the side wall of the slide groove 212.
[0036] When the sliding device slides, the slider 41 slides left and right along the axial direction of the slide rod 42. When the high-pressure rotary jet pile is idling, the slider 41 does not slide, and the return spring 5 on the left side of the slider 41 is in a relaxed state. When the high-pressure rotary jet pile is working, due to the friction between the toggle member 31 and the soil layer around the drill bit 2, the slider 41 slides with the baffle 3, and the return spring 5 on the left side of the slider 41 is in a compressed state. After the drill bit 2 completes the work, the return spring 5 rebounds, and the elastic force generated by the return spring 5 pushes the slider 41 to slide, thereby causing the baffle 3 to move until the inclined plate 33 is inserted into the inclined groove 213 and the grouting hole 211 is closed.
[0037] refer to Figure 3 The drill bit 2 is provided with multiple sections of accordion covers 6 at the openings of the two slide grooves 212, and the two side walls of the slider 41 are fixedly connected to the ends of the accordion covers 6, and the end of the accordion cover 6 away from the slider 41 is fixedly connected to the side wall of the slide groove 212 of the drill bit 2.
[0038] When the spray hole 211 is opened, the right accordion cover 6 is opened and the left accordion cover 6 is closed. When the spray hole 211 is closed, the left accordion cover 6 is opened and the right accordion cover 6 is closed.
[0039] The implementation principle of a high-pressure rotary jet pile in an embodiment of the present application is as follows: when the grouting hole 211 needs to be opened, the drill bit 2 is rotated to cause the toggle member 31 and the soil layer around the drill bit 2 to generate a force, so that the baffle plate 3 drives the sliding assembly 4 to slide along the length direction of the slide groove 212, thereby causing the reset spring 5 to be in a compressed state. After the high-pressure rotary jet pile is completed, the reset spring 5 in the compressed state rebounds instantly, so that the baffle plate 3 continues to block the grouting hole 211. Through the above technology, the phenomenon that the grouting generated when the high-pressure rotary jet pile is idling and causes inconvenience to the construction workers can be effectively reduced.
[0040] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A high-pressure jet grouting pile, comprising a drill rod (1) and a drill bit (2), wherein the top of the drill bit (2) is fixedly connected to the bottom of the drill rod (1), and characterized in that: The drill rod (1) is provided with a grouting pipeline (11), the drill bit (2) is provided with a placement groove (21) along the side wall toward the center thereof, the drill bit (2) is provided with a grouting hole (211) on a side of the placement groove (21) away from the end, the grouting hole (211) is connected to the placement groove (21), the grouting hole (211) is connected to the grouting pipeline (11), the drill bit (2) is provided with a baffle (3) in the placement groove (21), the baffle (3) and the drill bit (2) are slidably connected along the length direction of the placement groove (21), and a toggle member (31) for toggling the baffle (3) is fixedly provided on a side of the baffle (3) close to the end of the placement groove (21).
2. A high-pressure jet grouting pile according to claim 1, characterized in that: A sealing gasket (32) is fixedly provided on the side of the baffle (3) facing away from the toggle member (31), and the sealing gasket (32) abuts against the drill bit (2) at the bottom of the placement groove (21).
3. A high-pressure jet grouting pile according to claim 1, characterized in that: The drill bit (2) is provided with sliding grooves (212) on both side walls of the baffle (3) along the sliding direction of the baffle (3), and the drill bit (2) is provided with a sliding component (4) at the sliding groove (212) for guiding the baffle (3).
4. A high-pressure jet grouting pile according to claim 3, characterized in that: The sliding assembly (4) comprises two sliding blocks (41) and two sliding rods (42). The two sliding blocks (41) are respectively fixedly connected to the two sides of the baffle (3), and the sliding blocks (41) are slidably adapted to the sliding groove (212). Two sliding grooves (212) are provided, and the two sliding grooves (212) are respectively located on the two sides of the baffle (3). The two sliding rods (42) are arranged in the two sliding grooves (212) along the length direction of the sliding grooves (212), and both ends of the sliding rod (42) are fixedly connected to the inner walls of the drill bit (2) at both ends of the sliding groove (212), and the sliding block (41) and the sliding rod (42) are slidably connected along the axial direction of the sliding rod (42).
5. A high-pressure jet grouting pile according to claim 4, characterized in that: A return spring (5) is wound around the outside of the slide rod (42), one end of the return spring (5) is fixedly connected to the drill bit (2) at the end of the slide groove (212), and one end of the return spring (5) away from the end of the slide groove (212) is fixedly connected to the slide block (41).
6. A high-pressure jet grouting pile according to claim 5, characterized in that: An accordion cover (6) is provided at the opening of the slide slot (212), one end of the accordion cover (6) is fixedly connected to the end of the slide slot (212), and one end of the accordion cover (6) away from the end of the slide slot (212) is fixedly connected to the slider (41).
7. The high-pressure jet grouting pile according to claim 1, characterized in that: Both ends of the baffle (3) along the moving direction are fixedly provided with inclined plates (33), the inclined plates (33) gradually move away from the baffle (3) along the end of the placement groove (21) toward the center thereof, and the inclined plates (33) abut against the drill bit (2) at the bottom of the placement groove (21).
8. A high-pressure jet grouting pile according to claim 7, characterized in that: The drill bit (2) is provided with an oblique groove (213) at one end of the placement groove (21) away from the return spring (5), and the oblique groove (213) is plug-fitted with the inclined plate (33).