CN114562606B - Method for increasing jacking pipe stroke of short-stroke jack - Google Patents
Method for increasing jacking pipe stroke of short-stroke jack Download PDFInfo
- Publication number
- CN114562606B CN114562606B CN202210223057.2A CN202210223057A CN114562606B CN 114562606 B CN114562606 B CN 114562606B CN 202210223057 A CN202210223057 A CN 202210223057A CN 114562606 B CN114562606 B CN 114562606B
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- Prior art keywords
- short
- stroke
- horseshoe
- telescopic
- shaped steel
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 95
- 239000010959 steel Substances 0.000 claims abstract description 95
- 239000002689 soil Substances 0.000 claims abstract description 14
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 8
- 238000004140 cleaning Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 230000007306 turnover Effects 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 9
- 238000007906 compression Methods 0.000 description 9
- 238000003825 pressing Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a method for increasing the jacking pipe stroke of a short-stroke jack, which is to add a set of telescopic bearing ring between the short-stroke jack and a steel pipe; when the telescopic support ring is in an operation, the telescopic support ring is firstly contracted to the thinnest state, and when the telescopic rod of the short-stroke jack pushes the steel pipe into soil through the telescopic support ring and the telescopic rod of the short-stroke jack is completely extended, the telescopic rod of the short-stroke jack is contracted to an initial state; and then the thickness of the telescopic bearing ring is adjusted, so that the thickness of one stroke of the short-stroke jack is increased by the telescopic bearing ring, the short-stroke jack is restarted, and the steel pipe is further jacked into the soil body through the telescopic bearing ring. The invention effectively improves the construction efficiency, reduces the utilization rate of the hoisting machine and improves the site construction safety to a certain extent. The invention has the advantages of convenient installation and disassembly, convenient cleaning at any time, repeated turnover and use, and light and handy whole device and flexible transportation to different construction sites.
Description
Technical Field
The invention relates to a method for increasing the jacking pipe stroke of a short-stroke jack, and belongs to the technical field of underground pipeline laying.
Background
In the non-excavation tunneling construction of municipal pipeline laying, the thrust of the main top oil cylinder of the pipe jacking machine is uniformly dispersed onto the pipe end face of the inlet pipeline by adopting a bearing ring, and meanwhile, the bearing ring also has the function of protecting the pipe end face.
The prior bearing rings are all bearing rings with fixed sizes. When jacking pipe operation is carried out, the bearing rings with different specifications need to be replaced every time a certain distance is jacked, so that the stroke of the short-stroke jack is prolonged. When changing the bearing rings of different specifications, need jack-up lifting device cooperation, increased on-the-spot machinery bench and put into, frequent hoist and mount operation also can increase the security management risk simultaneously. The construction efficiency is lower.
Disclosure of Invention
The invention aims to provide a method for increasing the jacking stroke of a short-stroke jack, which is used for prolonging the stroke of the short-stroke jack by using a bearing ring during jacking operation, thereby improving the efficiency of pipeline laying operation, reducing the safety management risk and overcoming the defects in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the method for increasing the jacking pipe stroke of the short-stroke jack comprises the following steps: the method is that a set of telescopic bearing rings are added between a short-stroke jack and a steel pipe; when the telescopic support ring is in an operation, the telescopic support ring is firstly contracted to the thinnest state, and when the telescopic rod of the short-stroke jack pushes the steel pipe into soil through the telescopic support ring and the telescopic rod of the short-stroke jack is completely extended, the telescopic rod of the short-stroke jack is contracted to an initial state; then, the thickness of the telescopic bearing ring is adjusted, so that the thickness of the telescopic bearing ring is increased, the telescopic bearing ring is propped and fixed between the short-stroke jack and the steel pipe, and then the short-stroke jack is restarted, so that the steel pipe can be further propped into the soil body through the telescopic bearing ring.
In the method, the telescopic bearing ring consists of a front horseshoe-shaped steel plate frame, a rear horseshoe-shaped steel plate frame and a telescopic adjusting device positioned between the two horseshoe-shaped steel plate frames; the contact surfaces of the horseshoe-shaped steel plate frame, the steel pipe and the telescopic rod of the short-stroke jack are all planes, so that the end face of the steel pipe is prevented from being damaged when the steel pipe is jacked in.
In the method, the telescopic adjusting device consists of a group of screw rods uniformly distributed between two horseshoe-shaped steel plate frames; wherein, the middle parts of two screw rods positioned at the openings of the two horseshoe-shaped steel plate frames are respectively provided with a chain wheel and a hand wheel, the middle parts of the other screw rods are respectively provided with two chain wheels, and the chain wheels between the adjacent screw rods are respectively connected through chain transmission; the screw threads at the two ends of the screw rod are respectively in threaded connection with the two horseshoe-shaped steel plate frames; the distance between the two horseshoe-shaped steel plate frames is adjusted by rotating the hand wheel in the forward direction or the reverse direction so as to adjust the thickness of the telescopic bearing ring.
In the method, the horseshoe-shaped steel plate frame comprises two horseshoe-shaped steel plates, a group of reinforcing rib plates are welded between the two horseshoe-shaped steel plates, and a sealing plate is welded between the inner sides of the two horseshoe-shaped steel plates; a round hole is arranged between the reinforcing rib plates between the two horseshoe-shaped steel plates, and the round hole between the two horseshoe-shaped steel plates is welded with the screw rod seat.
In the method, limit nuts are arranged on the screw rods on the inner sides of the two horseshoe-shaped steel plate frames.
In the method, the screw rod seat is in a circular tube shape, and the inner circle of the circular tube is provided with a positive thread or a reverse thread corresponding to the screw rod; and the outer circles at the two ends of the round pipe are provided with limiting shoulders which are welded with the horseshoe-shaped steel plates.
In the method, a long round key groove is formed in the middle of the screw rod, and a flat key is arranged in the long round key groove; a chain wheel and a hand wheel connected with the screw rod are provided with a straight key slot; a straight key groove on the chain wheel and the hand wheel is fixedly connected with the screw rod through a flat key and a long round key groove.
In the method, the screw rods outside the chain wheel and the hand wheel are provided with the check ring grooves, and the check ring grooves are internally provided with check rings.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the advantages that a group of screw rods are connected into a whole by using the chain, the simple operation of the hand wheel is used, the extension and the contraction of the bearing ring are realized, the repeated replacement of the bearing rings with different specifications in the pipe jacking process is avoided, the construction efficiency is improved, the use ratio of a hoisting machine is reduced, the machine table work is effectively reduced, and the site construction safety is also improved to a certain extent along with the reduction of the use frequency of hoisting machines. The device is convenient to install and detach by simply connecting the screw rod with the horseshoe-shaped steel plate frame, is convenient to clean at any time, can be repeatedly used, is light and handy, and can be flexibly transported to different construction sites.
Drawings
FIG. 1 is a schematic view of the structure of the telescopic pressure-bearing ring of the present invention;
FIG. 2 is a schematic view of a telescoping adjustment apparatus of the present invention;
FIG. 3 is a schematic view of a horseshoe-shaped steel sheet frame of the present invention;
FIG. 4 is a schematic view of a lead screw assembly of the present invention;
fig. 5 is a schematic view of the process of jacking a steel pipe using the telescopic bearing ring of the present invention.
The marks in the drawings are: the steel plate comprises a 1-horseshoe-shaped steel plate frame, a 2-screw rod, a 3-positive thread, a 4-negative thread, a 5-sprocket, a 6-hand wheel, a 7-chain, an 8-horseshoe-shaped steel plate, a 9-reinforcing rib plate, a 10-sealing plate, an 11-screw rod seat, a 12-long round key slot, a 13-flat key, a 14-straight key slot, a 15-retainer ring, a 16-limit nut, a 17-telescopic compression ring, a 18-short stroke jack, a 19-telescopic rod, a 20-soil body and a 21-steel pipe.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples.
The invention relates to a method for increasing the jacking pipe stroke of a short-stroke jack, as shown in figures 1-5, which is to add a set of telescopic bearing rings 17 between a short-stroke jack 18 and a steel pipe 21; when the telescopic compression ring 17 is in operation, the telescopic compression ring 17 is firstly contracted to the thinnest state, and when the telescopic rod 19 of the short-stroke jack 18 pushes the steel pipe 21 into the soil body 20 through the telescopic compression ring 17 and the telescopic rod 19 of the short-stroke jack 18 is completely extended, the telescopic rod 19 of the short-stroke jack 18 is contracted to the initial state; then the thickness of the telescopic pressure-bearing ring 17 is adjusted, so that the thickness of one stroke 18 of the short-stroke jack is increased by the telescopic pressure-bearing ring 17, the short-stroke jack 18 is restarted, and the steel pipe 21 can be further jacked into soil through the telescopic pressure-bearing ring 17. The telescopic compression ring 17 consists of a front horseshoe-shaped steel plate frame 1, a rear horseshoe-shaped steel plate frame 1 and a telescopic adjusting device positioned between the two horseshoe-shaped steel plate frames 1; the contact surfaces of the horseshoe-shaped steel plate frame 1, the steel pipe 21 and the telescopic rod 19 of the short-stroke jack 18 are plane, so that the end surface of the steel pipe is prevented from being damaged when the steel pipe is jacked in. The telescopic adjusting device consists of a group of screw rods 2 which are uniformly distributed between two horseshoe-shaped steel plate frames 1; wherein a chain wheel 5 and a hand wheel 6 are arranged in the middle of the screw rods 2 positioned at the openings of the two horseshoe-shaped steel plate frames 1, two chain wheels 5 are respectively arranged in the middle of the rest screw rods 2, and the chain wheels 5 between the adjacent screw rods 2 are in transmission connection through a chain 7; the two ends of the screw rod 2 are provided with threads which are mutually opposite, namely, one end of the screw rod 2 is provided with a positive thread 3, and the other end of the screw rod 2 is provided with a reverse thread 4; threads at two ends of the screw rod 2 are respectively connected with corresponding threads on the two horseshoe-shaped steel plate frames 1; the distance between the two horseshoe-shaped steel plate frames 1 is adjusted by rotating the hand wheel 6 in the forward direction or the reverse direction so as to adjust the thickness of the telescopic pressure-bearing ring 17; the lead screw on the inner side of the two horseshoe-shaped steel plate frames is provided with the limit nut 16, the distance between the two horseshoe-shaped steel plate frames 1 can be limited through the limit nut 16, and the rigidity and the stability of the whole telescopic pressure-bearing ring 17 can be enhanced after the limit nut 16 is fastened in work.
As shown in fig. 2, a chain wheel 5 and a hand wheel 6 are respectively arranged in the middle of a screw rod 2 positioned at the opening of the horseshoe-shaped steel plate frame 1, and two chain wheels are respectively arranged in the middle of the rest screw rods 2; adjacent chain wheels 5 are connected in a transmission way through a chain 7. The screw rod 2 outside the chain wheel 5 and the hand wheel 6 is provided with a check ring groove, and the check ring groove is internally provided with a check ring 15. And limit nuts 16 are arranged on the screw rods 2 on the inner sides of the two horseshoe-shaped steel plate frames 1.
As shown in fig. 3, the horseshoe-shaped steel plate frame 1 comprises two horseshoe-shaped steel plates 8, a group of reinforcing rib plates 9 are welded between the two horseshoe-shaped steel plates 8, and a sealing plate 10 is welded between the inner sides of the two horseshoe-shaped steel plates 8; a round hole is arranged between the reinforcing rib plates 9 between the two horseshoe-shaped steel plates 8, and the round hole between the two horseshoe-shaped steel plates 8 is welded with the screw rod seat 11; the screw rod seat 11 is in a circular tube shape, and the inner circle of the circular tube is provided with a positive thread or a reverse thread corresponding to the screw rod 2; and the outer circles at the two ends of the round pipe are provided with limiting shoulders which are welded with the horseshoe-shaped steel plate 8.
As shown in fig. 4, an oblong key slot 12 is arranged in the middle of the screw rod 2, and a flat key 13 is arranged in the oblong key slot 12; the chain wheel 5 and the hand wheel 6 connected with the screw rod 2 are respectively provided with a straight key groove 14; the straight key groove 14 on the chain wheel 5 and the hand wheel 6 is fixedly connected with the screw rod 2 through the flat key 13 and the long round key groove 12.
In the concrete implementation, the horseshoe-shaped steel plate frame is welded by adopting steel plates with the specification of 20mm and round steel with the specification of 160mm, the size is 1250mm x 1500mm x 240mm, and screw rod seats with the diameter of 100mm are reserved around the frame. The screw rod is trapezoidal thread Tr100 x 6 (diameter phi 100mm, screw pitch 6 mm), forward and reverse threads, and the screw rod length is 600mm. The chain wheel and the chain are of the specification of No. 10. The inner diameter of the collar is 105mm. The limit round nut is Tr100 x 6, and the diameter of the hand wheel is 300mm.
The implementation steps of jacking the steel pipe into the soil body by adopting the telescopic bearing ring of the invention are shown in fig. 5:
and in the first step, one end of a steel pipe 21 is propped against the surface of the soil body 20, the other end of the steel pipe 21 is propped against one surface of the telescopic compression ring 17, and the other surface of the telescopic compression ring 17 is propped against the end surface of the telescopic rod 19 of the short-stroke jack 18. At this time, the telescopic compression ring 17 is in the thinnest state, and in addition, the telescopic rod 19 of the short-stroke jack 18 is also in the fully retracted state, and then the short-stroke jack 18 is fixed.
And secondly, starting the short-stroke jack 18, enabling the telescopic rod 19 of the short-stroke jack 18 to slowly extend, applying pressure to one end of the steel pipe 21 through the telescopic rod 19 and the telescopic bearing ring 17 of the short-stroke jack 18, jacking the other end of the steel pipe 21 into the soil body 20, and jacking the steel pipe 21 into the depth of the short-stroke jack 18.
And thirdly, unloading the short-stroke jack 18, and enabling the telescopic rod 19 of the short-stroke jack 18 to be in a fully retracted state again. The telescopic compression ring 17 is then adjusted to increase its thickness and then replaced between the steel pipe 21 and the short stroke jack 18.
And fourthly, starting the short-stroke jack 18 again to enable the telescopic rod 19 of the short-stroke jack 18 to slowly extend, applying pressure to one end of the steel pipe 21 through the telescopic rod 19 of the short-stroke jack 18 and the telescopic bearing ring 17 after the thickness is increased, and enabling the other end of the steel pipe 21 to further jack into the soil body 20, wherein the jacking depth of the steel pipe 21 is equal to the stroke of the two short-stroke jacks 18.
The above process is repeated until the steel pipe 21 is pushed into the soil body 20 to a predetermined depth.
Claims (6)
1. A method for increasing the jacking pipe stroke of a short-stroke jack is characterized by comprising the following steps of: the method is that a set of telescopic bearing rings (17) are added between a short-stroke jack (18) and a steel pipe (21); when the telescopic supporting ring (17) is firstly contracted to the thinnest state, when the telescopic rod (19) of the short-stroke jack (18) pushes the steel pipe (21) into the soil body (20) through the telescopic supporting ring (17), and after the telescopic rod (19) of the short-stroke jack (18) is completely extended, the telescopic rod (19) of the short-stroke jack (18) is contracted to the initial state; then, the thickness of the telescopic bearing ring (17) is adjusted, so that the thickness of the telescopic bearing ring (17) is increased and is propped and fixed between the short-stroke jack (18) and the steel pipe (21), and then the short-stroke jack (18) is restarted, so that the steel pipe (21) can be further propped into the soil body (20) through the telescopic bearing ring (17); the telescopic pressure-bearing ring (17) is composed of a front horseshoe-shaped steel plate frame (1) and a rear horseshoe-shaped steel plate frame (1) and a telescopic adjusting device positioned between the two horseshoe-shaped steel plate frames (1); the contact surfaces of the horseshoe-shaped steel plate frame (1) and the steel pipe (21) and the telescopic rod (19) of the short-stroke jack (18) are all planes so as to prevent the end surface of the steel pipe (21) from being damaged when the steel pipe (21) is jacked in; the telescopic adjusting device consists of a group of screw rods (2) which are uniformly distributed between two horseshoe-shaped steel plate frames (1); wherein, the middle parts of two screw rods (2) positioned at the openings of the two horseshoe-shaped steel plate frames (1) are respectively provided with a chain wheel (5) and a hand wheel (6), the middle parts of the rest screw rods are respectively provided with two chain wheels, and the chain wheels (5) between the adjacent screw rods (2) are respectively connected in a transmission way through a chain (7); the two ends of the screw rod (2) are provided with threads which are opposite to each other, and the threads at the two ends of the screw rod (2) are respectively in threaded connection with the two horseshoe-shaped steel plate frames (1); the distance between the two horseshoe-shaped steel plate frames (1) is adjusted by rotating the hand wheel (6) in the forward direction or the reverse direction so as to adjust the thickness of the telescopic bearing ring (17).
2. The method of increasing the jacking stroke of a short stroke jack of claim 1, wherein: the horseshoe-shaped steel plate frame (1) comprises two horseshoe-shaped steel plates (8), a group of reinforcing rib plates (9) are welded between the two horseshoe-shaped steel plates (8), and a sealing plate (10) is welded between the inner sides of the two horseshoe-shaped steel plates (8); a round hole is arranged between the reinforcing rib plates (9) between the two horseshoe-shaped steel plates (8), and the round hole between the two horseshoe-shaped steel plates (8) is welded with the screw rod seat (11).
3. The method of increasing the jacking stroke of a short stroke jack of claim 1, wherein: and limit nuts (16) are arranged on the screw rods (2) on the inner sides of the two horseshoe-shaped steel plate frames (1).
4. The method of increasing the jacking stroke of a short stroke jack of claim 2, wherein: the screw rod seat (11) is in a circular tube shape, and the inner circle of the circular tube is provided with a positive thread or a reverse thread corresponding to the screw rod (2); the outer circles at the two ends of the round pipe are provided with limiting shoulders which are welded with the horseshoe-shaped steel plates (8).
5. The method of increasing the jacking stroke of a short stroke jack of claim 1, wherein: an oblong key slot (12) is arranged in the middle of the screw rod (2), and a flat key (13) is arranged in the oblong key slot (12); a chain wheel (5) and a hand wheel (6) which are connected with the screw rod (2) are respectively provided with a straight key slot (14); a straight key groove (14) on the chain wheel (5) and the hand wheel (6) is fixedly connected with the screw rod (2) through a flat key (13) and a long round key groove (12).
6. The method of increasing the jacking stroke of a short stroke jack of claim 1, wherein: the screw rod (2) on the outer sides of the chain wheel (5) and the hand wheel (6) is provided with a check ring groove, and a check ring (15) is arranged in the check ring groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210223057.2A CN114562606B (en) | 2022-03-07 | 2022-03-07 | Method for increasing jacking pipe stroke of short-stroke jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210223057.2A CN114562606B (en) | 2022-03-07 | 2022-03-07 | Method for increasing jacking pipe stroke of short-stroke jack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114562606A CN114562606A (en) | 2022-05-31 |
| CN114562606B true CN114562606B (en) | 2024-03-01 |
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| CN202210223057.2A Active CN114562606B (en) | 2022-03-07 | 2022-03-07 | Method for increasing jacking pipe stroke of short-stroke jack |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519973A (en) * | 2008-02-25 | 2009-09-02 | 张学进 | Hydraulic bracket with interconnected top and bottom |
| CN104164837A (en) * | 2014-09-01 | 2014-11-26 | 中铁二十一局集团有限公司 | Automatic-locating continuous pushing device for large box beams |
| CN209636806U (en) * | 2018-12-11 | 2019-11-15 | 宏润建设集团股份有限公司 | A kind of steel support structure |
| CN113310812A (en) * | 2021-02-08 | 2021-08-27 | 山东科技大学 | Anchoring jointed rock mass loading device with lateral stress constraint and experimental method |
-
2022
- 2022-03-07 CN CN202210223057.2A patent/CN114562606B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519973A (en) * | 2008-02-25 | 2009-09-02 | 张学进 | Hydraulic bracket with interconnected top and bottom |
| CN104164837A (en) * | 2014-09-01 | 2014-11-26 | 中铁二十一局集团有限公司 | Automatic-locating continuous pushing device for large box beams |
| CN209636806U (en) * | 2018-12-11 | 2019-11-15 | 宏润建设集团股份有限公司 | A kind of steel support structure |
| CN113310812A (en) * | 2021-02-08 | 2021-08-27 | 山东科技大学 | Anchoring jointed rock mass loading device with lateral stress constraint and experimental method |
Non-Patent Citations (2)
| Title |
|---|
| 漆平生，杨顺喜，李明堃译.《顶管工程 上册 技术 机具 设备》.中国建筑工业出版社,1983,第175-183页. * |
| 田建德等.《桥梁工程与施工技术研究》.黄河水利出版社,2016,第43-47页. * |
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| CN114562606A (en) | 2022-05-31 |
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