High-pressure jet grouting pile waterproof curtain construction device

Abstract

The utility model relates to the technical field of high-pressure jet grouting pile slurry pipelines, in particular to a high-pressure jet grouting pile waterproof curtain construction device which comprises a left supporting mechanism and a right supporting mechanism which are arranged on a bottom plate and symmetrically distributed. The left supporting mechanism comprises a supporting frame arranged on the bottom plate and a lead screw arranged on one side of the supporting frame and used for driving the slurry pipeline to conduct height adjustment in the vertical direction. The limiting mechanism is arranged in the groove in the supporting frame and used for conducting centering limiting on the slurry pipeline driven by the lead screw. On one hand, friction between the slurry pipeline and the ground can be avoided, safety of the slurry pipeline is protected, on the other hand, friction between the outer edge of the slurry pipeline and the inner wall of a drill hole is avoided, slurry is prevented from being sprayed out from the damaged slurry pipeline, and slurry waste is effectively avoided; and by arranging the adjusting assembly and the clamping assembly, fixing and limiting of slurry pipelines of multiple specifications can be met, the universal applicability is achieved in the using function, and the using effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of slurry pipelines for high-pressure jet grouting piles, and particularly relates to a construction device for a water-stop curtain of a high-pressure jet grouting pile. Background Art

[0002] For a high-pressure jet grouting pile, after a grouting pipe with a special nozzle is drilled by a drill to a predetermined position in the soil layer, a high-pressure pulse pump is used to inject cement slurry through a jetting device at the lower end of the drill pipe, and the slurry is horizontally jetted into the soil around at a high speed. By means of the impact force of the fluid, the soil layer is cut, and the soil within the jet range is damaged. At the same time, the drill pipe rotates at a certain speed and slowly rises at a low speed (6 cm to 12 cm / min), so that the soil and the cement slurry are fully stirred and mixed. After cementation and hardening, a cylinder with a relatively uniform diameter and a certain strength is formed in the foundation, thereby strengthening the foundation to form a curtain to achieve the water-stop effect. It is applicable to the reinforcement of foundations such as silt, silty clay, cohesive soil, silt, sand, collapsible loess, artificial fill, and gravel soil.

[0003] The existing high-pressure jet grouting pile is connected to the slurry pipeline, and slurry materials can be injected while drilling underground to form a grouting column or a grouting curtain to achieve the water-stop effect. However, during the grouting operation of the high-pressure jet grouting pile, the slurry pipeline will move up and down, causing friction between the slurry pipeline and the ground, resulting in damage to the surface of the slurry pipeline. When the slurry pipeline transports the slurry, the slurry is likely to be ejected from the slurry pipeline, causing waste of the slurry.

[0004] The above content is only used to assist in understanding the technical solution of the present invention, and does not represent an admission that the above content is the closest prior art. Content of the Utility Model

[0005] The purpose of the utility model is to solve the above deficiencies and provide a construction device for a water-stop curtain of a high-pressure jet grouting pile.

[0006] To solve the above technical problems, the utility model adopts the following technical scheme: a construction device for a water-stop curtain of a high-pressure jet grouting pile, comprising: a left support mechanism and a right support mechanism symmetrically arranged on a bottom plate, wherein the left support mechanism comprises a support frame arranged on the bottom plate and a lead screw on one side of the support frame for driving the slurry pipeline to adjust the height in the vertical direction;

[0007] A limiting mechanism is arranged in a groove in the support frame for centering and limiting the slurry pipeline driven by the lead screw.

[0008] Furthermore, the limiting mechanism comprises a lower support plate arranged in the support frame for support, two relatively distributed linear guide rods are arranged on the lower support plate, and an adjusting component for adjusting the clamping angle of the slurry pipeline is arranged on the linear guide rods.

[0009] Further, the adjusting assembly includes an upper support plate arranged on two linear guide rods. One side of the upper support plate is hingedly provided with an inclined rod. An electric telescopic rod is arranged in the middle section of the inclined rod, and the fixed end of the electric telescopic rod is hingedly arranged on the upper support plate.

[0010] Further, a clamping assembly for clamping and limiting the slurry pipeline is arranged at the end of the inclined rod. The clamping assembly includes an outer support arc plate and an inner support arc pad which are vertically arranged and sleeved on top of each other. Adjusting rods are horizontally arranged in contact with the outer arc surface of the inner support arc pad close to the outer support arc plate respectively from above and below. A connecting rod fixedly connected to the outer support arc plate is arranged at the horizontal middle line position of the inner support arc pad. A damping rotating shaft is arranged at the end of the connecting rod connected to the inclined rod.

[0011] Further, a damping shock absorber is arranged between the end faces of the lower support plate and the upper support plate close to each other.

[0012] Further, a support block for cooperating with the lead screw is arranged on one side of the lower support plate.

[0013] Further, an external thread is arranged on the outer surface of the adjusting rod.

[0014] Further, a through hole is arranged on the bottom plate; the through hole is used to coincide with the drilling position of the corresponding drill on the soil layer.

[0015] Further, the left support mechanism further includes a guiding vertical block arranged inside the support frame and on the other side of the lead screw relative to it, and a motor is arranged at the bottom of the support frame.

[0016] Further, the right support mechanism has the same composition structure as the left support mechanism.

[0017] Compared with the prior art, the utility model has the following beneficial effects: By arranging the limiting mechanisms with the same structure in the left support mechanism and the right support mechanism, the utility model can not only lift the slurry pipeline for grouting operation, but also make the center of the slurry pipeline coincide with the center of the drill hole. On the one hand, it can avoid the friction between the slurry pipeline and the ground and protect the safety of the slurry pipeline. On the other hand, it can avoid the friction between the outer edge of the slurry pipeline and the inner wall of the drill hole, prevent the slurry from breaking and spraying out from the slurry pipeline, and effectively avoid the waste of slurry; And by arranging the adjusting assembly and the clamping assembly, it can meet the fixed limit of slurry pipelines of multiple specifications, has general applicability in terms of use functions, and has good use effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The attached drawings of the specification, which form a part of this application, are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0019] Figure 1 It is a top plan structure diagram of the whole of an embodiment of the present utility model;

[0020] Figure 2 It is a three-dimensional structure diagram of one perspective of the whole of an embodiment of the present utility model;

[0021] Figure 3 is Figure 2 the enlarged structure diagram at position A in

[0022] Figure 4 It is a three-dimensional structure diagram of another perspective of the whole of an embodiment of the present utility model;

[0023] Figure 5 It is a three-dimensional structure diagram of one perspective of the limit mechanism of an embodiment of the present utility model.

[0024] In the figure: 1, bottom plate; 2, left support mechanism; 21, support frame; 22, lead screw; 23, guiding vertical block; 24, motor; 3, right support mechanism; 4, limit mechanism; 41, lower support plate; 411, support block; 42, linear guide rod; 43, adjustment component; 431, upper support plate; 432, inclined rod; 433, electric telescopic rod; 44, clamping component; 441, outer support arc plate; 442, inner support arc pad; 443, adjustment rod; 4431, external thread; 444, connecting rod; 4441, damping rotating shaft; 45, damping shock absorber; 5, through hole. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present utility model.

[0026] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or the solution where both A and B are satisfied simultaneously. In addition, "a plurality of" means two or more. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0028] As Figures 1-5 shown, a construction device for a high-pressure jet grouting pile water-stop curtain of the present utility model includes: a left support mechanism 2 and a right support mechanism 3 which are symmetrically distributed on a bottom plate 1. The left support mechanism 2 includes a support frame 21 arranged on the bottom plate 1, and a lead screw 22 on one side of the support frame 21 for driving a slurry pipeline to adjust its height in the vertical direction.

[0029] A limiting mechanism 4 is arranged in a groove in the support frame 21 and is used for centering and limiting the slurry pipeline driven by the lead screw 22. With this design, through the linear motion generated by the rotation of the support frame 21, the limiting mechanism 4 connected thereto can move up and down in the vertical direction above the bottom plate 1, and the fixing point of the slurry pipeline can be adjusted to any height to meet the requirements of actual construction applications.

[0030] In one embodiment, the limiting mechanism 4 includes a lower support plate 41 arranged in the support frame 21 and used for support. Two relatively distributed linear guide rods 42 are arranged on the lower support plate 41, and an adjustment assembly 43 for adjusting the clamping angle of the slurry pipeline is arranged on the linear guide rods 42. With this design, through the two relatively distributed linear guide rods 42 designed on the lower support plate 41 and the adjustment assembly 43 slidably and guidingly connected to the linear guide rods 42, while the slurry pipeline for grouting operation can be limited, it can also assist in the up-and-down guiding movement in the vertical direction. The slurry pipeline is not completely fixed to the device in this embodiment to prevent damage to the device caused by the up-and-down vibration of the slurry pipeline due to external grouting operations.

[0031] In one embodiment, the adjusting assembly 43 includes an upper support plate 431 disposed on two linear guide rods 42. One side of the upper support plate 431 is hingedly provided with an inclined rod 432. An electric telescopic rod 433 is disposed in the middle section of the inclined rod 432, and the fixed end of the electric telescopic rod 433 is hingedly provided on the upper support plate 431. With such a design, through the inclined rod 432 hinged by the electric telescopic rod 433 on the upper support plate 431, under the telescopic action of the electric telescopic rod 433, the inclined rod 432 hinged at its end can be driven to adjust the angle under the limit of the hinge on the upper support plate 431, thereby adjusting the distance between the vertical surface on the inclined rod 432 near the corresponding side on the slurry pipeline and the clamping assembly 44, which is applicable to slurry pipelines of multiple specifications.

[0032] It should be noted that the horizontal length of the inclined rod 432 is longer than the horizontal length of the upper support plate 431.

[0033] In one embodiment, a clamping assembly 44 for clamping and limiting the slurry pipeline is disposed at the end of the inclined rod 432. The clamping assembly 44 includes an outer support arc plate 441 and an inner support arc pad 442 that are vertically stacked and sleeved. Adjusting rods 443 are horizontally disposed in contact with the outer arc surface of the inner support arc pad 442 near the outer support arc plate 441 up and down. A connecting rod 444 fixedly connected to the outer support arc plate 441 is disposed at the horizontal midline position of the inner support arc pad 442. With such a design, through the inner support arc pad 442 stacked and sleeved on the outer support arc plate 441, and by connecting the connecting rod 444 in a manner including but not limited to bolt fixation on the horizontal midlines of the outer support arc plate 441 and the inner support arc pad 442, at this time, under the action of the adjusting rods 443 screwed in and out horizontally on the upper and lower sides, the outer surface of the slurry pipeline can be extruded and limited by the inner support arc pad 442 to achieve the effect of limiting and fixing the slurry pipeline.

[0034] It should be noted that a damping rotating shaft 4441 is disposed at the end of the connecting rod 444 connected to the inclined rod 432. With such a design, through the damping rotating shaft 4441 welded to the outer end of the connecting rod 444, the inclination angle of the clamping assembly 44 can be arbitrarily changed.

[0035] Preferably, the inner support arc pad 442 is made of an elastic material, and the close contact area between the inner support arc pad 442 and the outer surface of the slurry pipeline can be arbitrarily changed and adjusted.

[0036] In one embodiment, a damping shock absorber 45 is provided between the end faces of the lower support plate 41 and the upper support plate 431 that are close to each other; the damping shock absorber 45 is used to cancel and slow down the vibration generated by the slurry pipeline during the grouting operation. With such a design, by using the damping shock absorber 45, which includes but is not limited to bolted connection, between the lower support plate 41 and the upper support plate 431, the vibration generated by the slurry pipeline during the grouting operation can be canceled and slowed down, reducing the adverse effects of vibration on the equipment and protecting the slurry pipeline.

[0037] In one embodiment, a support block 411 that cooperates with the lead screw 22 is provided on one side of the lower support plate 41. With such a design, through the support block 411 welded on the lower support plate 41 and the cooperation between the internal thread thereof and the external thread of the lead screw 22, the lower support plate 41 can be driven to perform a linear motion by the rotational motion of the lead screw 22.

[0038] It should be noted that a guide groove is machined on the end face of the lower support plate 41 near the guide vertical block 23, which can perform linear limiting while the lower support plate 41 is rotating, thereby realizing the linear motion of the lower support plate 41 and related structures on the lower support plate 41 within the support frame 21.

[0039] In one embodiment, an external thread 4431 is provided on the outer surface of the adjusting rod 443. With such a design, through the external thread 4431 machined on the outer surface of the adjusting rod 443 and being rotated clockwise or counterclockwise in the corresponding groove, the adjusting rod 443 can be horizontally extended or retracted in the corresponding groove. When extended, the end of the adjusting rod 443 will abut and fix against the inner support arc pad 442, making the inner surface of the inner support arc pad 442 in close contact with the outer surface of the slurry pipeline, achieving the effect of fixed connection. When retracted, the inner support arc pad 442 is separated from the slurry pipeline.

[0040] In one embodiment, a through hole 5 is provided on the bottom plate 1; the through hole 5 is used to coincide with the drilling position of the corresponding drill on the soil layer. With such a design, through the through hole 5 machined on the bottom plate 1, the slurry pipeline can be vertically passed through the bottom plate 1 and clamped and limited by the clamping assembly 44 in the limiting mechanism 4 installed thereon, so that the slurry pipeline will not directly rub against the ground and slurry will not be ejected due to pipeline damage.

[0041] In one embodiment, the left support mechanism 2 further includes a guide vertical block 23 provided on the inner side of the support frame 21 and on the other side of the lead screw 22, and a motor 24 is provided at the bottom of the support frame 21. With such a design, through the guide vertical block 23 fixed on the inner side of the support frame 21 by means including but not limited to welding, the driven limiting mechanism 4 can be synchronously limited under the rotational action of the lead screw 22 to achieve the effect of the vertical lifting of the limiting mechanism 4 within the support frame 21.

[0042] It should be noted that the bottom of the support frame 21 is fixedly connected to the output shaft of the motor 24 through a coupling. Driven by the motor 24, the rotation of the support frame 21 is realized, and then the linear motion of the limiting mechanism 4 is realized.

[0043] In one embodiment, the composition structure of the right support mechanism 3 is the same as that of the left support mechanism 2. With such a design, the other semi-circular surface of the slurry pipeline can be limited by the limiting mechanism 4 with the same structure provided on the right support mechanism 3, and it can be used in cooperation with the limiting mechanism 4 designed on the left support mechanism 2.

[0044] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention.

Claims

1. A construction device for a high-pressure jet grouting pile water-stop curtain, characterized in that: Including: A left support mechanism (2) and a right support mechanism (3) which are arranged on the bottom plate (1) and symmetrically distributed. The left support mechanism (2) includes a support frame (21) arranged on the bottom plate (1), and a lead screw (22) on one side of the support frame (21) for driving the slurry pipeline to adjust its height in the vertical direction; A limit mechanism (4), which is arranged in a groove in the support frame (21) and is used for centering and limiting the slurry pipeline driven by the lead screw (22).

2. The construction device for the high-pressure jet grouting pile water-stop curtain according to claim 1, characterized in that: The limit mechanism (4) includes a lower support plate (41) arranged in the support frame (21) for support. Two relatively distributed linear guide rods (42) are arranged on the lower support plate (41), and an adjustment component (43) for adjusting the clamping angle of the slurry pipeline is arranged on the linear guide rods (42).

3. The construction device for a high-pressure jet grouting pile water-stop curtain according to claim 2, wherein: The adjustment component (43) includes an upper support plate (431) arranged on the two linear guide rods (42). An inclined rod (432) is hinged on one side of the upper support plate (431). An electric telescopic rod (433) is arranged in the middle section of the inclined rod (432), and the fixed end of the electric telescopic rod (433) is hinged on the upper support plate (431).

4. The construction device for the high-pressure rotary jet grouting pile water-stop curtain according to claim 3, characterized in that: A clamping component (44) for clamping and limiting the slurry pipeline is arranged at the end of the inclined rod (432). The clamping component (44) includes an outer support arc plate (441) and an inner support arc pad (442) which are vertically arranged and sleeved. Adjusting rods (443) are horizontally arranged in contact with the outer arc surface of the inner support arc pad (442) close to the outer support arc plate (441) up and down. A connecting rod (444) fixedly connected with the outer support arc plate (441) is arranged at the horizontal midline position of the inner support arc pad (442). A damping rotating shaft (4441) is arranged at the end of the connecting rod (444) connected with the inclined rod (432).

5. The construction device for a high-pressure rotary jet grouting pile water-stop curtain according to claim 3, characterized in that: A damping shock absorber (45) is arranged between the adjacent end faces of the lower support plate (41) and the upper support plate (431).

6. The construction device for a high-pressure jet grouting pile water-stop curtain according to claim 2, characterized in that: A support block (411) cooperating with the lead screw (22) is arranged on one side of the lower support plate (41).

7. A construction device for a high-pressure rotary jet grouting pile water-stop curtain according to claim 4, characterized in that: External threads (4431) are arranged on the outer surface of the adjusting rod (443).

8. A construction device for a high-pressure rotary jet grouting pile water-stop curtain according to claim 1, characterized in that: A through hole (5) is arranged on the bottom plate (1); the through hole (5) is used to coincide with the drilling position of the corresponding drill on the soil layer.

9. The construction device for the cut-off curtain of high-pressure jet grouting piles according to claim 1, wherein: The left support mechanism (2) further includes a guiding vertical block (23) arranged on the inner side of the support frame (21) and on the other side of the lead screw (22), and a motor (24) is arranged at the bottom of the support frame (21).

10. A construction device for a high-pressure jet grouting pile water-stop curtain according to claim 2, characterized in that: The composition structure of the right support mechanism (3) is the same as that of the left support mechanism (2).

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