CN216948226U - Expansion deformation structure arranged in steel pipe - Google Patents
Expansion deformation structure arranged in steel pipe Download PDFInfo
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- CN216948226U CN216948226U CN202220080340.XU CN202220080340U CN216948226U CN 216948226 U CN216948226 U CN 216948226U CN 202220080340 U CN202220080340 U CN 202220080340U CN 216948226 U CN216948226 U CN 216948226U
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- pipe
- annular wall
- water injection
- deformation space
- peripheral annular
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Abstract
The utility model relates to the technical field of high-pressure grouting, and discloses an expansion deformation structure arranged in a steel pipe, which comprises an expansion pipe arranged in the steel pipe, wherein the expansion pipe is provided with an annular peripheral annular wall which elastically deforms in a pressed annular manner, and a closed deformation space is formed by surrounding the peripheral annular wall; the expansion pipe is provided with a water injection port communicated with the deformation space, the water injection port is connected with the hydraulic pump through a water injection pipe, the water injection pipe is provided with a one-way valve, the one-way valve limits the water body to flow into the deformation space from the hydraulic pump in a one-way mode, the water injection pipe is communicated with a drain pipe for discharging the water body in the deformation space, and the drain pipe is provided with a drain valve; the deformation space is formed by enclosing the peripheral annular wall, the peripheral annular wall expands outwards by injecting water into the deformation space, the peripheral annular wall is sealed and fixed in the steel pipe, and after water in the deformation space is discharged, the peripheral annular wall elastically retracts to separate from the pressing and sealing of the steel pipe.
Description
Technical Field
The utility model relates to the technical field of high-pressure grouting, in particular to an expansion deformation structure arranged in a steel pipe.
Background
The designed diameter of the tree root pile is about 200mm generally, and a steel pipe with the diameter of 89mm is inserted. The construction process of the tree root pile mainly comprises the following pipe drilling pile forming hole, the steel pipe descending in the pile hole, the gravel backfilling, the following pipe wall protecting sleeve pulling, the primary high-pressure grouting, the secondary high-pressure grouting pile forming and the like.
In the prior art, when grouting is carried out, a steel pipe is inserted into a pile hole, the grouting pipe is arranged in the steel pipe and communicated with an external grouting machine, the steel pipe needs to be sealed by a sealing structure in the grouting process, and the sealing structure bears high-pressure recoil acting force brought by grout in the high-pressure grouting process, so that the sealing effect is poor due to the fact that the sealing structure is often easy to loosen.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an expansion deformation structure arranged in a steel pipe, and aims to solve the problem that in the prior art, the high-pressure grouting hole sealing effect is poor.
The utility model is realized in such a way that the expansion deformation structure arranged in the steel pipe comprises an expansion pipe arranged in the steel pipe, wherein the expansion pipe is provided with an annular outer circumferential annular wall which elastically deforms in a pressed annular manner, and a closed deformation space is formed by surrounding the outer circumferential annular wall; the expansion pipe is provided with a water injection port communicated with the deformation space, the water injection port is connected with the hydraulic pump through a water injection pipe, the water injection pipe is provided with a check valve, the check valve limits the water body to flow into the deformation space from the hydraulic pump in a one-way mode, the water injection pipe is communicated with a drain pipe used for discharging the water body in the deformation space, and the drain pipe is provided with a drain valve.
Further, the expansion pipe comprises an upper flange head, a lower flange head and the peripheral annular wall, wherein the upper flange head seals the top of the peripheral annular wall, and the lower flange head seals the bottom of the peripheral annular wall.
Furthermore, the upper flange head is inserted and fixed at the top of the peripheral annular wall from top to bottom.
Furthermore, the lower flange head is inserted from bottom to top and fixed at the bottom of the peripheral annular wall.
Further, the water injection port is arranged in the upper flange head.
Furthermore, the upper flange head is inserted and fixed at the top of the peripheral annular wall from top to bottom. The water filling port upwards extends to form a connecting pipe, and the connecting pipe is fixedly inserted into the water filling pipe.
Furthermore, an annular steel wire mesh is arranged in the peripheral annular wall, and the steel wire mesh is arranged in a surrounding mode around the peripheral direction of the peripheral annular wall.
Furthermore, the middle part of the peripheral annular wall is a soft section which is arranged around the circumferential direction of the deformation space in a surrounding way; the upper part and the lower part of the peripheral annular wall are respectively provided with a hardness section which is arranged around the circumferential direction of the deformation space in a surrounding way; the steel wire mesh is arranged in the hardness section and the softness section, and the elastic deformation resistance strength of the softness section is smaller than that of the hardness section.
Furthermore, the softness section is provided with a soft abutting surface which is arranged towards the inner side wall of the steel pipe, an inward-concave outer ring groove is arranged in the middle of the soft abutting surface, and the outer ring groove is arranged in a surrounding mode along the circumferential direction of the softness section.
Furthermore, the outer ring slot is filled with a frosting layer, the frosting layer is arranged in parallel with the soft abutting surface of the softness section, a plurality of metal strips arranged in an arc shape are embedded into the frosting layer, the metal strips are arranged in a surrounding mode along the circumferential direction of the peripheral annular wall, and the metal strips are arranged in a surrounding mode along the circumferential direction of the peripheral annular wall at intervals in sequence.
Compared with the prior art, the expansion deformation structure arranged in the steel pipe provided by the utility model has the advantages that the deformation space is formed by enclosing the peripheral annular wall, the peripheral annular wall expands outwards by injecting water into the deformation space, and is sealed and fixed in the steel pipe, after the water in the deformation space is discharged, the peripheral annular wall elastically retracts to separate from the pressing and sealing of the steel pipe, the structure is simple, the installation and construction are convenient, and the high-pressure grouting hole sealing effect is good.
Drawings
FIG. 1 is a schematic front view of an expanding deformation structure provided in a steel pipe according to the present invention;
FIG. 2 is a schematic front view of the peripheral annular wall provided by the present invention;
FIG. 3 is a schematic front view of an expanded and deformed closed steel pipe provided in the steel pipe according to the present invention;
FIG. 4 is a schematic front view of an expanding deformed structure disposed within a steel pipe to open the steel pipe in accordance with the present invention;
fig. 5 is a schematic front view of a softness segment provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit the utility model.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
Referring to fig. 1-5, preferred embodiments of the present invention are shown.
The expansion deformation structure arranged in the steel pipe comprises an expansion pipe arranged in the steel pipe 300, wherein the expansion pipe is provided with an annular outer circumferential annular wall 100 which is elastically deformed in a compression annular manner, and the outer circumferential annular wall 100 surrounds and forms a closed deformation space 101, so that when the expansion pipe is subjected to from inside to outside pressure, the outer circumferential annular wall 100 elastically expands outwards, and after the from inside to outside pressure is removed, the outer circumferential annular wall 100 elastically contracts and recovers and deforms.
The expansion pipe is provided with a water injection port communicated with the deformation space 101, the water injection port is connected with the hydraulic pump 200 through a water injection pipe 203, the water injection pipe 203 is provided with a one-way valve 204, the one-way valve 204 limits the water to flow into the deformation space 101 from the hydraulic pump 200 in one way, the water injection pipe 203 is communicated with a drain pipe 201 for discharging the water in the deformation space 101, and the drain pipe 201 is provided with a drain valve 202.
When the drain valve 202 is closed, water is injected into the deformation space 101 through the water injection pipe 203 by the water pressure pump 200, and the peripheral annular wall 100 is extruded by the water to expand and deform outwards until the peripheral annular wall 100 is fixedly pressed on the inner side wall of the steel pipe 300 and the steel pipe 300 is closed; when the water pressure pump 200 is closed, the water discharge valve 202 is opened, the water in the deformation space 101 is discharged through the water discharge pipe 201, the outer peripheral annular wall 100 contracts and recovers to deform, the outer peripheral annular wall 100 is separated from the pressing on the inner side wall of the steel pipe 300, and the steel pipe 300 is opened.
The above-mentioned setting is at the inflation deformation structure in the steel pipe that provides, encloses through periphery rampart 100 and closes and form deformation space 101, through toward deformation space 101 in water injection, periphery rampart 100 expands outwards, seals and fixes in steel pipe 300, discharges the water back in the deformation space 101, and periphery rampart 100 elasticity is contract, breaks away from to pressing and sealing steel pipe 300, simple structure, construction and installation convenience, and high-pressure slip casting hole sealing is effectual.
The expansion pipe comprises an upper flange head 103, a lower flange head 104 and a peripheral annular wall 100, wherein the upper flange head 103 closes the top of the peripheral annular wall 100, and the lower flange head 104 closes the bottom of the peripheral annular wall 100.
In this embodiment, the upper flange head 103 is inserted from top to bottom and fixed to the top of the outer circumferential wall 100, and the lower flange head 104 is inserted from bottom to top and fixed to the bottom of the outer circumferential wall 100.
The water filling port sets up at last flange head 103, and the water filling port upwards extends there is connecting pipe 105, and connecting pipe 105 is fixed to be inserted in water injection pipe 203, the outside water injection pipe 203 of being convenient for and the intercommunication in the space 101 that warp.
An annular steel wire mesh is arranged in the outer circumferential ring wall 100, and the steel wire mesh is arranged around the circumferential direction of the outer circumferential ring wall 100 in a surrounding mode. Thus, the outer peripheral skirt 100 can be ensured to be high pressure resistant, and the spring back effect of the outer peripheral skirt 100 is good.
In this embodiment, the middle of the outer circumferential wall 100 is a soft segment 107, and the soft segment 107 is circumferentially arranged around the deformation space 101; the upper part and the lower part of the peripheral annular wall 100 are respectively provided with a hardness section 108, and the hardness section 108 is arranged around the periphery of the deformation space 101 in a surrounding way; the steel wire meshes are arranged in the hard section 108 and the soft section 107, and the elastic deformation resistance strength of the soft section 107 is smaller than that of the hard section 108.
Thus, after the deformation space 101 is filled with the high-pressure water, the softness section 107 and the hardness section 108 are respectively pressed and expanded, and the expansion speed of the softness section 107 is greater than that of the hardness section 108, so that the softness section 107 is preferentially pressed against the inner side wall of the steel pipe 300, and then the high-pressure water is continuously filled, and the hardness section 108 is also pressed against the inner side wall of the steel pipe 300, thereby not only accelerating the time of sealing and fixing, but also forming multi-section pressing of the softness section 107 and the hardness section 108, and the fixing effect and the sealing effect are better.
The softness section 107 is provided with a soft abutting surface arranged towards the inner side wall of the pile hole, the middle part of the soft abutting surface is provided with an inward concave outer ring groove, and the outer ring groove is circumferentially arranged along the circumference of the softness section 107. Thus, after the soft abutting surface of the softness section 107 abuts against the inner side wall of the steel pipe 300, an upper abutting surface and a lower abutting surface are formed, the fixing effect is good, and the sealing effect is better.
The outer annular inslot is filled with dull polish layer 1071, and dull polish layer 1071 arranges with the soft butt face parallel and level of softness section 107, and the inside embedding of dull polish layer 1071 has the metal strip 1072 that a plurality of arcs arranged, and metal strip 1072 encircles along the circumference of periphery rampart 100 and arranges, and a plurality of metal strips 1072 encircle to arrange along the interval of the circumference of periphery rampart 100 according to the preface.
By arranging the frosted layer 1071, after the upper section and the lower section of the softness section 107 are pressed on the inner side wall of the steel pipe 300, the frosted layer 1071 is also pressed on the inner side wall of the steel pipe 300, and the pressing friction force can be enhanced through the frosted layer 1071; secondly, set up metal strip 1072 in the frosting 1071, interval arrangement between a plurality of metal strips 1072 can strengthen frosting 1071's withstand voltage intensity, and separate two sections upper and lower withstand voltage of softness section 107 mutually, and whole softness section 107 forms upper and lower three sections and supports and press.
In practical application, a grouting pipe 102 penetrates through the expansion pipe, a gap is formed between the grouting pipe 102 and the peripheral annular wall 100, the lower part of the grouting pipe 102 penetrates through the bottom of the expansion pipe to form a grouting section extending to the lower part of the expansion pipe, a grouting opening is formed in the bottom of the grouting section, and the upper part of the grouting pipe 102 penetrates through the top of the expansion pipe to form a connecting section extending to the upper part of the expansion pipe; the connecting section is connected with a grout pipe, the grout pipe is connected with a grouting machine, and grout injected by the grouting machine is injected into the pile hole from top to bottom through the grout pipe, the grouting pipe 102 and the steel pipe 300.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The expansion deformation structure is arranged in the steel pipe and is characterized by comprising an expansion pipe arranged in the steel pipe, wherein the expansion pipe is provided with an annular outer circumferential annular wall which is elastically deformed in a compression annular manner, and a closed deformation space is formed by surrounding the outer circumferential annular wall; the expansion pipe is provided with a water injection port communicated with the deformation space, the water injection port is connected with the hydraulic pump through a water injection pipe, the water injection pipe is provided with a one-way valve, the one-way valve limits water from flowing into the deformation space in one direction through the hydraulic pump, the water injection pipe is communicated with a drain pipe for discharging the water in the deformation space, and the drain pipe is provided with a drain valve.
2. The structure of claim 1, wherein the expanded pipe comprises an upper flange head, a lower flange head, and the peripheral annular wall, the upper flange head closing a top of the peripheral annular wall, and the lower flange head closing a bottom of the peripheral annular wall.
3. The structure of claim 2, wherein the upper flange head is inserted and fixed to the top of the outer circumferential wall from the top down.
4. The structure of claim 2, wherein the lower flange head is inserted and fixed to the bottom of the outer circumferential wall from the bottom up.
5. The structure of claim 2, wherein the water injection port is provided in the upper flange head.
6. The structure of claim 5, wherein the upper flange head is inserted and fixed to the top of the outer circumferential wall from the top to the bottom, and the connection pipe is extended upward and fixed to the water injection pipe.
7. An expanding structure as set forth in any of claims 1 to 6, characterized in that an annular steel wire mesh is provided in the peripheral annular wall, said steel wire mesh being arranged circumferentially around the peripheral annular wall.
8. An expanding deformation structure provided in a steel pipe according to claim 7, wherein the central portion of the outer peripheral annular wall is a soft segment circumferentially arranged around the circumferential direction of the deformation space; the upper part and the lower part of the peripheral annular wall are respectively provided with a hardness section which is arranged around the circumferential direction of the deformation space in a surrounding way; the steel wire mesh is arranged in the hardness section and the softness section, and the elastic deformation resistance strength of the softness section is smaller than that of the hardness section.
9. The structure of claim 8, wherein the soft segment has a soft abutment surface disposed toward an inner sidewall of the steel pipe, and an outer annular groove is formed at a middle portion of the soft abutment surface and is recessed inward, and is circumferentially disposed along a circumferential direction of the soft segment.
10. The structure of claim 9, wherein the outer circumferential groove is filled with a frosted layer, the frosted layer is flush with the soft contact surface of the soft segment, a plurality of metal strips arranged in an arc shape are embedded in the frosted layer, the metal strips are circumferentially arranged along the circumferential direction of the outer circumferential ring wall, and the metal strips are sequentially arranged at intervals circumferentially arranged along the circumferential direction of the outer circumferential ring wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220080340.XU CN216948226U (en) | 2022-01-12 | 2022-01-12 | Expansion deformation structure arranged in steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220080340.XU CN216948226U (en) | 2022-01-12 | 2022-01-12 | Expansion deformation structure arranged in steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216948226U true CN216948226U (en) | 2022-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220080340.XU Active CN216948226U (en) | 2022-01-12 | 2022-01-12 | Expansion deformation structure arranged in steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216948226U (en) |
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2022
- 2022-01-12 CN CN202220080340.XU patent/CN216948226U/en active Active
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