Dewatering well for reinforcing shield launching end well

Abstract

The utility model discloses a dewatering well for strengthening a shield launching end well, which comprises a well casing, the well casing is formed by vertically splicing a plurality of solid pipes and a plurality of water filter pipes, a gauze layer is wrapped outside each water filter pipe, and at least two hoop components for fixing the gauze layer are detachably arranged on each water filter pipe. The hoop assembly is detachably provided with a supporting mechanism used for supporting the hole wall of a drilled hole in a jacking mode. The hoop assemblies are arranged at the upper end and the lower end of the water filter pipe to fix the gauze layer, the stability of the gauze layer in use is improved, the supporting mechanisms are additionally arranged on the hoop assemblies, the water filter pipe can support the hole wall of a drill hole through the unfolded supporting mechanisms in the hoisting process, and therefore the water filter pipe can be placed in the middle and aligned and spliced conveniently; and meanwhile, the deviation problem of the well casing after assembly is reduced, and the pipeline installation stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dewatering wells, in particular to a dewatering well used for reinforcing a starting end well of a shield machine. Background Art

[0002] In the reinforcement of the shield starting end well, the dewatering well is an important component. The main function of the dewatering well is to improve the safety and stability of the construction area by lowering the groundwater level during the shield starting and receiving process.

[0003] At present, the precipitation well is composed of a solid pipe on the top and a filter pipe on the bottom. The filter pipe is wrapped with a layer of 80-mesh gauze. After the installation is completed, the soil above three meters is compacted and backfilled, and the medium-coarse sand is backfilled below three meters. The wellhead is sealed with a cover plate. However, in the process of hoisting the various sections of the precipitation well pipe into the borehole, the operator generally relies on the experience to align the pipe. This operation is time-consuming and prone to the situation where the pipe installation is tilted, affecting the stability of use. Utility Model Content

[0004] The purpose of the utility model is to address the above-mentioned deficiencies and provide a dewatering well for reinforcing the starting end well of a shield machine, so as to facilitate splicing and improve the stability of pipeline installation.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a dewatering well for reinforcing the starting end well of a shield machine, comprising a well pipe, wherein the well pipe is formed by splicing a plurality of solid pipes and a plurality of water filter pipes up and down, the water filter pipe is wrapped with a gauze layer, and the water filter pipe is detachably provided with at least two clamp assemblies for fixing the gauze layer, and the clamp assembly is detachably provided with a supporting mechanism for supporting the wall of a drilled hole.

[0006] Further, the support mechanism includes a holder detachably arranged on the clamp assembly, the holder is rotatably provided with a support assembly, the support assembly is provided with a ratchet that can rotate synchronously with the support assembly, the holder is also rotatably provided with a ratchet for preventing the support assembly from driving the ratchet to rotate upward, and the holder is provided with a first pressure spring for pushing the ratchet to be close to the ratchet;

[0007] The clamp assembly is provided with a clamping groove for the clamping seat to be clamped into the clamping seat from top to bottom.

[0008] Furthermore, the support assembly includes a rotating arm rotatably arranged on the base through a torsion spring, and an arc plate that fits the wall of the drilled hole is rotatably arranged at one end of the rotating arm away from the base. When the arc plate contacts the wall of the drilled hole, the torsion spring has a tendency to drive the rotating arm to continue to rotate downward.

[0009] Furthermore, a rotation locking assembly located between the rotating arm and the well pipe is provided on the base; the rotation locking assembly includes a slider capable of sliding up and down along the base, a second pressure spring is provided at the bottom of the slider, a baffle is provided on the side of the slider close to the ratchet, and the rotation locking assembly also includes a locking block provided on the ratchet, and when the top of the locking block contacts the bottom of the baffle, the slider is in the upper limit position and the top plane of the slider is higher than the top plane of the clamp assembly.

[0010] Furthermore, the rotating arm is composed of a vertical section connected to the holder and a bent section connected to the arc plate, and the vertical section is parallel to the well pipe when the top of the locking block contacts the bottom of the baffle.

[0011] The beneficial effects of the utility model are embodied in:

[0012] The utility model provides clamp assemblies at the upper and lower ends of the water filter pipe to fix the gauze layer, thereby improving the stability of the gauze layer when in use, and adding a supporting mechanism to the clamp assemblies so that the expanded supporting mechanism can support the wall of the drill hole when the water filter pipe is hoisted, thereby allowing the water filter pipe to remain centered and lowered, making alignment and splicing easier, while reducing the offset problem of the well pipe after assembly, thereby improving the stability of pipeline installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional view of the utility model;

[0014] Figure 2 It is a schematic diagram of assembling the clamp assembly and the support mechanism of the utility model;

[0015] Figure 3 It is a three-dimensional view of the support mechanism of the utility model;

[0016] Figure 4 It is a three-dimensional view of the rotary locking assembly of the utility model;

[0017] Figure 5 It is a schematic diagram of assembling the well pipe of the utility model.

[0018] In the figure:

[0019] 1. Well pipe; 2. Gauze layer; 3. Hoop assembly; 4. Support mechanism; 41. Holder; 42. Support assembly; 421. Rotating arm; 422. Arc plate; 43. Ratchet; 44. Ratchet; 45. First pressure spring; 5. Rotation locking assembly; 51. Sliding block; 52. Second pressure spring; 53. Baffle; 54. Locking block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-5 The utility model discloses a dewatering well for reinforcing the starting end well of a shield machine, comprising a well pipe 1, which is formed by splicing a plurality of solid pipes and a plurality of water filter pipes up and down, the water filter pipe is wrapped with a gauze layer 2, the water filter pipe is detachably provided with at least two clamping hoop assemblies 3 for fixing the gauze layer 2, and the clamping hoop assembly 3 is detachably provided with a supporting mechanism 4 for supporting the wall of a drilled hole.

[0022] The utility model provides clamp assemblies 3 at the upper and lower ends of the water filter pipe to fix the gauze layer 2, thereby improving the stability of the gauze layer 2 when in use, and additionally provides a supporting mechanism 4 on the clamp assemblies 3, so that when the water filter pipe is hoisted, the expanded supporting mechanism 4 can support the wall of the drill hole, thereby enabling the water filter pipe to be kept centered and lowered, facilitating alignment and splicing, while reducing the offset problem of the well pipe 1 after assembly, thereby improving the stability of pipeline installation.

[0023] It should be noted that at least two support mechanisms 4 are provided on a single clamp assembly 3 and are evenly distributed on the clamp assembly 3. The specific structure of the clamp assembly 3 belongs to the mature prior art and will not be described in detail here.

[0024] In one embodiment, the support mechanism 4 includes a holder 41 detachably arranged on the clamp assembly 3, a support assembly 42 is rotatably arranged on the holder 41, a ratchet 43 capable of synchronously rotating with the support assembly 42 is arranged on the support assembly 42, a ratchet 44 for preventing the support assembly 42 from driving the ratchet 43 to rotate upward is rotatably arranged on the holder 41, and a first pressure spring 45 for pushing the ratchet 44 to be close to the ratchet 43 is arranged on the holder 41;

[0025] The clamp assembly 3 is provided with a slot for the clamping seat 41 to be clamped into the clamping seat 41 from top to bottom.

[0026] With this design, the first pressure spring 45 cooperates with the ratchet 44 to limit the ratchet 43, so that the support assembly 42 can only rotate to one side. When the support assembly 42 rotates downward and fits against the wall of the drilled hole, it will not loosen due to external force, thereby being able to provide stable support force to the water filter pipe.

[0027] In one embodiment, the support assembly 42 includes a rotating arm 421 rotatably disposed on the base 41 through a torsion spring, and an arc plate 422 that fits the wall of the drilled hole is rotatably disposed at one end of the rotating arm 421 away from the base 41. When the arc plate 422 contacts the wall of the drilled hole, the torsion spring has a tendency to drive the rotating arm 421 to continue to rotate downward.

[0028] This design enables the torsion spring to drive the support assembly 42 to rotate toward the side close to the borehole wall, close to the borehole wall, and use the arc plate 422 to ensure the fit between the support assembly 42 and the borehole wall, thereby reducing the probability of tilting of the well pipe 1 after splicing.

[0029] In one embodiment, a rotation locking assembly 5 located between the rotating arm 421 and the well pipe 1 is provided on the base 41; the rotation locking assembly 5 includes a slider 51 that can slide up and down along the base 41, a second pressure spring 52 is provided at the bottom of the slider 51, and a baffle 53 is provided on the side of the slider 51 close to the ratchet 43. The rotation locking assembly 5 also includes a locking block 54 provided on the ratchet 43. When the top of the locking block 54 contacts the bottom of the baffle 53, the slider 51 is in the upper limit position and the top plane of the slider 51 is higher than the top plane of the clamp assembly 3.

[0030] In this design, the support assembly 42 of the support mechanism 4 at the top of the water filter pipe is manually adjusted to rotate upward close to the water filter pipe, and then the position of the adjusted support assembly 42 is locked by the rotation locking assembly 5, so that when this section of the water filter pipe is lowered, the downward resistance will not increase due to the expansion of the support assembly 42. When another section of the water filter pipe is lowered, the support assembly 42 is used for guidance, so that the water filter pipe can be more easily aligned and installed. At the same time, the downward pressure of the lowered water filter pipe is used to squeeze the slider 51 downward, so that the baffle 53 pushes the locking block 54 to rotate and pass over the locking block 54, so that it no longer contacts the locking block 54, and then the support assembly 42 is expanded and pressed against the wall of the drilled hole under the action of the torsion spring, so as to support and reinforce the water filter pipe.

[0031] It should be noted that, in order to prevent the ratchet 44 from hindering the rotation of the ratchet 43 when the slider 51 descends, a certain rotation gap is left between the ratchet 44 and the ratchet 43 when the top of the locking block 54 contacts the bottom of the baffle 53 .

[0032] In one embodiment, the rotating arm 421 is composed of a vertical section connected to the holder 41 and a bent section connected to the arc plate 422 , and the vertical section is parallel to the well pipe 1 when the top of the locking block 54 contacts the bottom of the baffle 53 .

[0033] With this design, the cooperation between the vertical section and the bent section makes it easier for the water filter pipe to be guided by the rotating arm 421 to dock with another water filter pipe when it descends.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0036] In addition, "plurality" means two or more.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dewatering well for reinforcing the starting end well of a shield machine, characterized in that: The invention comprises a well pipe (1), wherein the well pipe (1) is formed by splicing a plurality of solid pipes and a plurality of water filter pipes up and down, the water filter pipe is provided with a gauze layer (2) on the outside, the water filter pipe is detachably provided with at least two clamping hoop assemblies (3) for fixing the gauze layer (2), and the clamping hoop assembly (3) is detachably provided with a supporting mechanism (4) for supporting the wall of a drill hole; The support mechanism (4) comprises a holder (41) detachably arranged on the clamp assembly (3); a support assembly (42) is rotatably arranged on the holder (41); a ratchet (43) capable of rotating synchronously with the support assembly (42) is arranged on the support assembly (42); a ratchet (44) for preventing the support assembly (42) from driving the ratchet (43) to rotate upward is also rotatably arranged on the holder (41); and a first pressure spring (45) for pushing the ratchet (44) to be close to the ratchet (43) is arranged on the holder (41); The clamp assembly (3) is provided with a clamping groove for the clamping seat (41) to be clamped into the clamping seat (41) from top to bottom.

2. A dewatering well for reinforcing the starting end well of a shield tunnel according to claim 1, characterized in that: The support assembly (42) comprises a rotating arm (421) rotatably arranged on the holder (41) by a torsion spring, and an arc-shaped plate (422) which fits the wall of the drilled hole is rotatably arranged at one end of the rotating arm (421) away from the holder (41), and when the arc-shaped plate (422) contacts the wall of the drilled hole, the torsion spring has a tendency to drive the rotating arm (421) to continue to rotate downward.

3. A dewatering well for reinforcing the starting end well of a shield tunnel according to claim 2, characterized in that: The base (41) is provided with a rotation locking assembly (5) located between the rotation arm (421) and the well pipe (1); the rotation locking assembly (5) comprises a slider (51) capable of sliding up and down along the base (41); a second pressure spring (52) is provided at the bottom of the slider (51); a baffle (53) is provided on the side of the slider (51) close to the ratchet (43); the rotation locking assembly (5) further comprises a locking block (54) provided on the ratchet (43); when the top of the locking block (54) contacts the bottom of the baffle (53), the slider (51) is in an upper limit position and the top plane of the slider (51) is higher than the top plane of the clamp assembly (3).

4. A dewatering well for reinforcing the starting end well of a shield tunnel according to claim 3, characterized in that: The rotating arm (421) is composed of a vertical section connected to the holder (41) and a bent section connected to the arc plate (422), and the vertical section is parallel to the well pipe (1) when the top of the locking block (54) contacts the bottom of the baffle (53).

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