Assembly tool type protection device for foundation pit dewatering well

Abstract

The utility model discloses an assembled tool type protection device for a foundation pit dewatering well. The assembled tool type protection device comprises a steel protection cylinder with a U-shaped groove formed in the side edge. An anti-abrasion piece is installed in the U-shaped groove, and a drainage pipeline is installed in the anti-abrasion piece in a penetrating mode. The drainage pipeline is installed at the U-shaped groove of the steel casing through the elastic damping vibration attenuation effect provided by the anti-abrasion piece to avoid abrasion, and the problem that in the prior art, the rigid contact position of the drainage pipeline and the steel casing is prone to vibration abrasion due to vibration generated when the drainage pipeline pumps and drains water is solved.

Description

Technical Field

[0001] The utility model relates to an assembled tool-type protective device for a foundation pit dewatering well, belonging to the technical field of construction protection. Background Art

[0002] With the development of urban construction, the effective use of underground space has become a new area of ​​modern urban construction, and deep foundation pit construction and underground excavation operations often require underground drainage operations. Whether underground drainage is achieved by light well point drainage or point seepage well point drainage, it is necessary to dig a drainage well downward in the foundation pit. After the drainage pipe is placed at the wellhead of the drainage well, there is still an open space, which poses a certain safety hazard. Therefore, the wellhead of the drainage well needs to be protected.

[0003] The existing precipitation well protection is shown in Chinese patent announcement number CN214497561U. A U-shaped groove is set on the protection tube for drainage pipes to pass through and the open space of the wellhead is covered with a cover plate. Although the potential safety hazard of the open wellhead of the precipitation well is solved, the drainage pipe will vibrate when pumping water, and the rigid contact between the drainage pipe and the protection tube is prone to vibration wear. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an assembled tool-type protective device for a foundation pit dewatering well.

[0005] The utility model is realized through the following technical solutions.

[0006] The utility model provides an assembled tool-type protection device for a foundation pit dewatering well, comprising:

[0007] Steel casing with U-shaped grooves on the sides;

[0008] An anti-wear part is installed in the U-shaped groove, and a drainage pipe is installed through the anti-wear part.

[0009] It also includes a foundation pit bottom surface, a dewatering well is concave under the foundation pit bottom surface, a dewatering well pipe section is installed in the dewatering well, and the bottom of the steel casing is installed on the top of the dewatering well pipe section.

[0010] The top of the drainage pipe extends out of the steel casing to the drainage ditch at the bottom of the foundation pit, and a water pump is installed at the bottom of the drainage pipe.

[0011] A suspension rope is bound in the middle of the drainage pipe, and the suspension rope is bound and fixed on the fixed rod; the two ends of the fixed rod are horizontally clamped in the clamping grooves set in the steel casing.

[0012] The top of the steel casing is fixedly connected with a steel cover plate by bolts, and the steel cover plate covers the open space at the top opening of the precipitation well pipe section.

[0013] The anti-wear part includes an inner rigid body made of steel plates, an elastic interlayer made of discarded rubber tires and an outer rigid body made of steel plates. The inner rigid body is interference fit in the U-shaped groove of the steel casing, the elastic interlayer provides elastic damping and vibration reduction, and a drainage pipe is installed in the inner gap of the outer rigid body.

[0014] The U-shaped groove and the fixing rod are in a vertically distributed position on the steel casing.

[0015] The beneficial effect of the utility model is that the drainage pipe is installed in the U-shaped groove of the steel casing to avoid wear by providing elastic damping and vibration reduction through the anti-wear parts, which solves the problem of vibration wear at the rigid contact between the drainage pipe and the protective tube caused by the vibration of the drainage pipe during drainage pumping in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model when it is used and installed;

[0017] Figure 2 It is a schematic diagram of the structure of the utility model after use and installation;

[0018] Figure 3 yes Figure 2 A local enlarged schematic diagram of the middle A;

[0019] In the figure: 1- steel casing; 11- dewatering well pipe section; 12- bottom surface of foundation pit; 2- U-shaped groove; 3- anti-wear parts; 31- inner rigid body; 32- elastic interlayer; 33- outer rigid body; 4- drainage pipe; 41- water pump; 5- fixed rod; 6- steel cover plate. DETAILED DESCRIPTION

[0020] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0021] like Figures 1 to 3 shown.

[0022] The present application discloses an assembled tool-type protection device for a foundation pit dewatering well, comprising:

[0023] The bottom contacts the steel casing 1 installed on the top of the precipitation well pipe section 11, and the bottom surface 12 of the foundation pit is downwardly driven out of the precipitation well to install the precipitation well pipe section 11 in the precipitation well for inner wall support and water infiltration and collection.

[0024] The steel casing 1 is provided with a U-shaped groove 2 on the side, and a wear-resistant part 3 is installed in the U-shaped groove 2. A drainage pipe 4 is installed through the wear-resistant part 3. The top of the drainage pipe 4 extends out of the steel casing 1 to the drainage ditch on the bottom surface 12 of the foundation pit. A water pump 41 is installed at the bottom of the drainage pipe 4. The water pump 41 pumps out the water collected in the precipitation well pipe section 11. A suspension rope 42 is tied to the middle of the drainage pipe 4, and the suspension rope 42 is tied and fixed to the fixed rod 5.

[0025] The two ends of the fixing rod 5 are transversely clamped in the clamping grooves provided in the steel casing 1. The top of the steel casing 1 is fixedly connected with a steel cover plate 6 by bolts 61, and the steel cover plate 6 covers the open space at the top of the precipitation well pipe section 11.

[0026] The anti-wear part 3 includes an inner rigid body 31 formed of steel plates, an elastic interlayer 32 formed of waste rubber tires and an outer rigid body 33 formed of steel plates. The inner rigid body 31 is interference fit in the U-shaped groove 2 of the steel casing 1, the elastic interlayer 32 provides elastic damping and vibration reduction, and the drainage pipe 4 is gap installed in the outer rigid body 33.

[0027] When the water pump 41 gets stuck while pumping water from the precipitation well and the generated vibration is transmitted to the drainage pipe 4, the drainage pipe 4 transmits the vibration to the elastic interlayer 32 through the external rigid body 33 for shock absorption, thereby avoiding rigid contact vibration wear between the drainage pipe 4 and the U-shaped groove 2 of the steel casing 1. The drainage pipe 4 is installed in the U-shaped groove 2 of the steel casing 1 to avoid wear through the elastic damping and vibration reduction effect provided by the anti-wear part 3, which solves the problem of vibration wear easily occurring at the rigid contact between the drainage pipe and the protective tube due to vibration during drainage in the prior art.

[0028] The U-shaped groove 2 and the fixing rod 5 are vertically distributed on the steel casing 1 .

Claims

1. An assembled tool-type protection device for a foundation pit dewatering well, characterized in that: include: A steel casing (1) having a U-shaped groove (2) on the side; An anti-wear component (3) is installed in the U-shaped groove (2), and a drainage pipe (4) is installed through the anti-wear component (3); The anti-wear part (3) comprises an inner rigid body (31) formed of a steel plate, an elastic interlayer (32) formed of a waste rubber tire, and an outer rigid body (33) formed of a steel plate. The inner rigid body (31) is interference fit in the U-shaped groove (2) of the steel casing (1), the elastic interlayer (32) provides elastic damping and vibration reduction, and a drainage pipe (4) is installed in the inner gap of the outer rigid body (33).

2. The assembled tool-type protection device for the foundation pit dewatering well according to claim 1 is characterized in that: It also comprises a foundation pit bottom surface (12), a dewatering well is recessed in the foundation pit bottom surface (12), a dewatering well pipe section (11) is installed in the dewatering well, and the bottom of the steel casing (1) is installed on the top of the dewatering well pipe section (11).

3. The assembled tool-type protection device for the foundation pit dewatering well according to claim 1 is characterized in that: The top of the drainage pipe (4) extends out of the steel casing (1) to the drainage ditch on the bottom surface (12) of the foundation pit, and a water pump (41) is installed at the bottom of the drainage pipe (4).

4. The assembled tool-type protection device for the foundation pit dewatering well according to claim 3 is characterized in that: A suspension rope (42) is bound in the middle of the drainage pipe (4), and the suspension rope (42) is bound and fixed on the fixed rod (5); the two ends of the fixed rod (5) are transversely clamped in the clamping grooves provided in the steel casing (1).

5. The assembled tool-type protection device for the foundation pit dewatering well according to claim 1 is characterized in that: The top of the steel casing (1) is fixedly connected to a steel cover plate (6) via bolts (61), and the steel cover plate (6) covers the open space at the top opening of the precipitation well pipe section (11).

6. The assembled tool-type protection device for the foundation pit dewatering well according to claim 1 is characterized in that: The U-shaped groove (2) and the fixing rod (5) are in a vertically distributed position on the steel casing (1).

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