CN111577976A - Vertical jacking device and jacking method thereof - Google Patents
Vertical jacking device and jacking method thereof Download PDFInfo
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- CN111577976A CN111577976A CN202010549212.0A CN202010549212A CN111577976A CN 111577976 A CN111577976 A CN 111577976A CN 202010549212 A CN202010549212 A CN 202010549212A CN 111577976 A CN111577976 A CN 111577976A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 63
- 239000010959 steel Substances 0.000 claims abstract description 63
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 57
- 125000006850 spacer group Chemical group 0.000 claims description 12
- 239000003351 stiffener Substances 0.000 claims description 2
- 230000008569 process Effects 0.000 description 13
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 239000002689 soil Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
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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
- F16L1/06—Accessories therefor, e.g. anchors
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Abstract
The invention provides a vertical jacking device and a jacking method thereof, which are used for jacking pipe joints in a horizontally arranged steel jacking pipe, and the vertical jacking device comprises: at least one base located within the steel top tube; the jacking frame is positioned on the base and comprises a U-shaped frame and two jacking supports, the U-shaped frame is vertically arranged, an opening of the U-shaped frame is upward, the U-shaped frame comprises a bottom plate and two side plates vertically arranged on the bottom plate, the bottom plate is used for placing pipe joints, the two jacking supports are respectively arranged at one ends of the two side plates, which are far away from the bottom plate, and the two jacking supports are perpendicular to the side plates and extend towards opposite directions; at least one group of cushion blocks are positioned between the bottom plate and the pipe joints; at least two hydraulic oil cylinders are respectively arranged below the two jacking supports, and the hydraulic oil cylinders can extend or shorten along the vertical direction to enable the jacking frame to ascend or descend. The bottom plate and the pipe joints are provided with the cushion blocks, so that the height of the pipe joints can be increased under the condition that the stroke of the hydraulic oil cylinder is limited. And the height and the number of the cushion blocks are variable, so that the jacking pipe is suitable for jacking pipes with different diameters.
Description
Technical Field
The invention relates to the technical field of pipe jacking construction, in particular to a vertical jacking device and a jacking method thereof.
Background
With the further improvement of the national requirements for environmental protection, industrial wastewater and urban domestic sewage in coastal regions need to be discharged in deep sea, and the sewage discharge effect of long-distance pipelines is increasingly obvious. The conventional underwater pipe burying excavation process is adopted to lay the sewage pipeline, and the defects of high manufacturing cost, large pollution and large environmental influence are overcome; and the steel pipe jacking process and the vertical jacking process are adopted, so that the damage to the environment can be effectively reduced, and meanwhile, the construction cost is lower compared with that of an underwater pipe burying process. The steel pipe jacking process is that the steel pipe jacking is jacked into the soil according to a designed gradient by overcoming the friction force between a pipeline and the surrounding soil in a working pit by means of jacking force generated by jacking equipment. The vertical jacking process is that vertical jacking equipment is utilized to jack up a plurality of pipe sections in the horizontal steel jacking pipe section by section, so that adjacent pipe sections are connected and the pipe sections are exposed out of the mud surface of the seabed to the designed elevation.
Currently, a common vertical jacking device uses a hydraulic cylinder or a jack to act on a pipe joint so as to lift the pipe joint. The hydraulic jack has the defects that the jacking height of a hydraulic oil cylinder or a jack is limited, the hydraulic oil cylinder or the jack needs to be moved or replaced in the jacking process, and the construction efficiency is low due to the fact that the space in a steel jacking pipe is limited and the operation is inconvenient.
Disclosure of Invention
The invention aims to provide a vertical jacking device and a jacking method thereof, which are simple in structure, convenient to operate and suitable for jacking pipes with different diameters.
In order to achieve the above object, the present invention provides a vertical jacking apparatus for jacking pipe joints in a horizontally arranged steel jacking pipe, comprising:
at least one base located within the steel top tube;
the jacking frame is positioned on the base and comprises a U-shaped frame and two jacking supports, the U-shaped frame is vertically arranged, an opening of the U-shaped frame is upward, the U-shaped frame comprises a bottom plate and two side plates vertically arranged on the bottom plate, the bottom plate is used for placing a pipe joint, the two jacking supports are respectively arranged at one ends of the two side plates far away from the bottom plate, and the two jacking supports are perpendicular to the side plates and extend towards opposite directions;
at least one set of spacers located between the bottom plate and the pipe joints;
at least two hydraulic oil cylinders are respectively arranged below the two jacking supports, and the hydraulic oil cylinders can extend or shorten along the vertical direction to enable the jacking frame to ascend or descend.
Optionally, the number of the bases is two, the two bases are arranged in parallel along the axial direction of the steel jacking pipe, the vertical jacking device further comprises two support rods arranged on the bases, the support rods are perpendicular to the bases, two ends of each support rod are respectively located on the two bases, and each support rod is provided with at least one hydraulic oil cylinder.
Optionally, the two support rods are equal in height in the vertical direction.
Optionally, the width of the bottom plate in the axial direction parallel to the steel jacking pipe is smaller than the distance between the two bases, and the width of the bottom plate in the axial direction perpendicular to the steel jacking pipe is smaller than the distance between the two support rods.
Optionally, the vertical height of the upper surface of the bottom plate is less than or equal to the vertical height of the upper surface of the base.
Optionally, the number of the base is one, and the jacking frame and the hydraulic cylinder are both arranged on the base.
Optionally, the width of the base in the direction parallel to the axis of the steel roof pipe is greater than the width of the bottom plate in the direction parallel to the axis of the steel roof pipe.
Optionally, the base is arc-shaped, and the radian of the base is matched with the radian of the bottom of the steel jacking pipe so that the lower surface of the base is attached to the surface of the bottom of the steel jacking pipe.
Optionally, the base includes a top wall and two arc-shaped side walls, two ends of the top wall are respectively connected to the same sides of the two arc-shaped side walls, and the other sides of the arc-shaped side walls are in contact with the bottom of the steel jacking pipe.
Optionally, a plurality of stiffening ribs are arranged in an area enclosed by the top wall and the two arc-shaped side walls.
Optionally, the top support comprises a square supporting plate and two right-angled triangle side plates, the two right-angled triangle side plates are respectively arranged on two opposite sides of the side plate, the two right-angled sides of the right-angled triangle side plates are respectively connected with the side plate and the square supporting plate, and the telescopic end of the hydraulic oil cylinder is abutted to the square supporting plate.
Based on this, this application still provides a jacking method of vertical jacking device, including:
step S1, sequentially installing a base, a jacking frame and a hydraulic oil cylinder in the steel ejector pipe;
step S2, placing the pipe joint on the bottom plate of the jacking frame;
step S3, driving the hydraulic oil cylinder to extend to enable the jacking frame to rise to a first preset position, and enabling at least part of the pipe joint to extend out of the hole of the steel jacking pipe;
step S4, the hydraulic oil cylinder is driven to shorten so that the jacking frame descends to an initial position, and a group of cushion blocks are placed on the bottom plate;
step S5, driving the hydraulic oil cylinder to extend to enable the cushion block to be in contact with the bottom of the pipe joint, and continuing to drive the hydraulic oil cylinder to extend to enable the jacking frame to ascend to a second preset position;
and S6, if the height of the second preset position is smaller than the final preset position, repeating the steps S4-S5, and continuously placing a cushion block on the cushion block positioned at the top of the bottom plate.
Optionally, the limit stroke of the hydraulic oil cylinder is equal to the height of the lifting frame when the lifting frame is lifted to the first preset position.
The invention provides a vertical jacking device and a jacking method thereof. And the height and the quantity of cushion can be changed, are applicable to the jacking pipe of different diameters, and the flexibility is stronger. In addition, the whole device is simple in structure, small in occupied space and simple to operate, and can be used for jacking in a jacking pipe with limited space.
Drawings
Fig. 1 is a front view of a vertical lifting device according to a first embodiment of the present invention;
fig. 2 is a top view of a vertical jacking apparatus according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a jacking frame according to a first embodiment of the present invention;
fig. 4 is a schematic structural diagram of a base according to an embodiment of the present invention;
FIG. 5 is a front view of a vertical lifting device according to a second embodiment of the present invention
FIG. 6 is a step diagram of a jacking method according to an embodiment of the present invention;
wherein the reference numerals are:
10. 11-a base; 20. 21-jacking frames; 30. 31-a cushion block; 40. 41-a hydraulic oil cylinder; 50-support rods;
100-top wall; 110-curved sidewalls; 120-a stiffener; 210-a backplane; 220-side plate; 230-jacking.
Detailed Description
The following describes in more detail embodiments of the present invention with reference to the schematic drawings. Advantages and features of the present invention will become apparent from the following description and claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
The first embodiment is as follows:
as shown in fig. 1 to 3, the present embodiment provides a vertical jacking device for jacking pipe joints in a horizontally arranged steel roof pipe, including:
at least one base 10 located within the steel top tube;
the jacking frame 20 is positioned on the base 10 and comprises a U-shaped frame and two jacking brackets 230, the U-shaped frame is vertically arranged, the opening of the U-shaped frame is upward, the U-shaped frame comprises a bottom plate 210 and two side plates 220 vertically arranged on the bottom plate 210, the bottom plate 210 is used for placing pipe joints, the two jacking brackets 230 are respectively arranged at one ends of the two side plates 220 far away from the bottom plate 210, and the two jacking brackets 230 are perpendicular to the side plates 220 and extend towards opposite directions;
at least one set of spacers 30 located between the bottom plate 210 and the pipe joints;
at least two hydraulic oil cylinders 40 are respectively arranged below the two jacking brackets 230, and the hydraulic oil cylinders 40 can be extended or shortened along the vertical direction to enable the jacking frame 20 to ascend or descend.
Specifically, the horizontally arranged steel jacking pipe is a main drainage pipeline and is constructed and buried through a jacking pipe process. The base 10 is used for bearing structures such as a jacking frame 20, a pipe joint and a hydraulic oil cylinder 40 and is positioned at the bottom in the steel top pipe. In this embodiment, the base 10 is arc-shaped, and the radian of the base 10 is matched with the radian of the bottom of the steel top pipe so that the lower surface of the base 10 is attached to the surface of the bottom of the steel top pipe. It should be understood that the base 10 is placed along a direction perpendicular to the axial direction of the steel jacking pipe, and since the steel jacking pipe is of a cylindrical structure, the shape of the base 10 is designed to be matched with that of the steel jacking pipe, so that the vertical jacking device is placed more stably, and the stability of the pipe joint in the jacking process is further ensured.
Referring to fig. 4, the base 10 includes a top wall 100 and two arc-shaped side walls 110, two ends of the top wall 100 are respectively connected to the same sides of the two arc-shaped side walls 110, and the other sides of the arc-shaped side walls 110 are in contact with the bottom of the steel top pipe. In this embodiment, in order to reduce the weight of the base 10 and ensure that the base 10 has sufficient strength and rigidity, the base 10 may be designed as a hollow structure, so that the base 10 can be transported in a steel roof pipe.
In this embodiment, the top wall 100 and the arc-shaped side wall 110 are both made of steel plates, and the top wall 100 is connected with the arc-shaped side wall 110 by welding. The size of the base 10 is designed according to the size of the steel jacking pipe, and the base 10 can be prefabricated in a factory and then transported to a site for installation. Alternatively, the top wall 100 and the side walls may be assembled in an assembled form on site, which is not limited in this application.
In this embodiment, a plurality of stiffening ribs 120 are disposed in an area enclosed by the top wall 100 and the two arc-shaped side walls 110, and the stiffening ribs 120 are disposed to improve the strength and rigidity of the base 10. The stiffening rib 120 is disposed along the circumference of the arc-shaped sidewall 110, and the stiffening rib 120 is welded to the bottom wall and both the arc-shaped sidewalls 110.
Referring to fig. 1, at least two bases 10 are provided, the two bases 10 are arranged in parallel along the axial direction of the steel jacking pipe, the vertical jacking device further includes two support rods 50 arranged on the bases 10, the support rods 50 are perpendicular to the bases 10, two ends of each support rod 50 are respectively located on the two bases 10, and each support rod 50 is provided with at least one hydraulic oil cylinder 40. In this embodiment, the number of the bases 10 is two, and the two bases 10 are disposed at an interval of 1 meter. The base 10 is provided with the support rod 50, and at least one hydraulic oil cylinder 40 is arranged on the support rod 50. Through setting up bracing piece 50, on the one hand can be convenient for the tube coupling by the base 10 go up transfer to on the jacking frame 20, on the other hand can bed hedgehopping hydraulic cylinder 40 for jacking frame 20 is bigger at vertical direction's home range. In this embodiment, the supporting rods 50 may be made of steel plates, and the two supporting rods 50 are located on the same horizontal plane, so as to prevent the jacking frame 20 from inclining and affecting jacking of the pipe joints.
In this embodiment, the width of the bottom plate 210 in the axial direction parallel to the steel jacking pipe is smaller than the distance between the two bases 10, and the width of the bottom plate 210 in the axial direction perpendicular to the steel jacking pipe is smaller than the distance between the two support rods 50. It can be understood that the length and width of the rectangular frame enclosed by the base 10 and the supporting rods 50 are respectively greater than the length and width of the bottom plate 210, so that the bottom plate 210 can be lower than the rectangular frame or higher than the rectangular frame, and the range of motion is larger.
Optionally, the vertical height of the upper surface of the bottom plate 210 is less than or equal to the vertical height of the upper surface of the base 10, so as to facilitate transferring the pipe joint from the base 10 to the bottom plate 210. In this embodiment, the upper surface of the bottom plate 210 is flush with the upper surface of the base 10. It will be appreciated that the hydraulic rams shown in figure 1 are in an extended condition so that the upper surface of the base plate 210 is above the base 10.
With reference to fig. 1 and fig. 3, the jacking frame 20 is used for carrying the pipe joint and jacking the pipe joint. The jacking frame 20 comprises a U-shaped frame and two jacking brackets 230, the pipe joints are placed on a bottom plate 210 of the U-shaped frame, at least one hydraulic oil cylinder 40 is arranged on each jacking bracket 230, and the jacking brackets 230 are lifted or lowered by extending or shortening the hydraulic oil cylinders 40, so that the whole jacking frame 20 and the pipe joints are driven to lift or lower. Because the hydraulic cylinder 40 that utilizes jacking frame 20 both sides drives, compares the mode of traditional direct jacking pipe coupling, and the process that rises of jacking frame 20 and pipe coupling is more steady, and the pipe coupling is difficult to the slope, simple structure, and the operation of being convenient for.
In this embodiment, the bottom plate 210 and the side plate 220 can be made of steel plates, the width of the bottom plate 210 in the direction perpendicular to the axial direction of the steel top pipe is slightly smaller than the diameter of the pipe joint, and the height of the side plate 220 is smaller than the height of the pipe joint, so that when the pipe joint is required to be spliced at a rising preset height, the pipe joint is fixed and stopped through the top of the pipe joint.
The top support 230 comprises a square supporting plate and two right-angled triangle side plates, the two right-angled triangle side plates are respectively arranged on two opposite sides of the side plate 220, two right-angled sides of the right-angled triangle side plates are respectively connected with the side plate 220 and the square supporting plate, and the telescopic end of the hydraulic oil cylinder 40 is abutted to the square supporting plate. In this embodiment, the distance between the two right-angled triangle side plates is equal to the diameter of the hydraulic oil cylinder 40, so that the jacking 230 fixes the hydraulic oil cylinder 40, and the hydraulic oil cylinder 40 is prevented from shaking and inclining in the jacking process to influence the alignment and connection between pipe joints.
The hydraulic oil cylinder 40 is used for jacking the pipe joints, the hydraulic oil cylinder 40 adopts a hydraulic station as a power source, and an oil pump of the hydraulic oil cylinder can adopt a variable pump and is used for adjusting the jacking speed. And the oil inlet pipelines of the two hydraulic oil cylinders 40 can be further provided with regulating valves to regulate the oil inlet speed, so that the jacking speeds of the two hydraulic oil cylinders 40 can be separately regulated, and the pipe joints can be corrected conveniently. Of course, other equipment such as a jack can be used for jacking, and the application does not limit the jacking equipment. In this embodiment, there are two hydraulic cylinders 40, but of course, there may be more than two hydraulic cylinders, and the application is not limited thereto.
The cushion block 30 is used for adjusting the jacking height of the pipe joint. It should be understood that, due to the limited extension and retraction stroke of the hydraulic cylinder 40, by providing the pad 30 between the bottom plate 210 and the pipe joint, the height of the pipe joint can be increased without changing the elevation height of the jacking frame 20, so that the pipe joint can reach the preset height. In this embodiment, the number of the cushion blocks 30 is four, and two cushion blocks 30 are provided in each group. Of course, the present application does not impose any limitations on the number of spacers 30.
Example two:
the difference from the first embodiment is that in the second embodiment, referring to fig. 5, the number of the base 10 is one, and the jacking frame 20 and the hydraulic cylinder are both disposed on the base 10. The advantage is that the structure is more simplified, but the disadvantage compared with the first embodiment is that the pipe joint cannot be easily transferred from the base 10 to the jacking frame 20, and the pipe joint needs to be lifted and transported manually.
In this embodiment, the jacking frame 20 and the base 10 are disposed in parallel and perpendicular to the axial direction of the steel jacking pipe, and the two hydraulic cylinders 40 are respectively disposed at two ends of the base 10. The width of the base 10 in the direction parallel to the axis of the steel top pipe is greater than the width of the bottom plate 210 in the direction parallel to the axis of the steel top pipe, so that the base 10 can better bear the jacking frame 20 and pipe joints, and the jacking frame 20 is prevented from inclining.
Based on this, this application still provides a jacking method, combines fig. 1, fig. 3 and fig. 6, uses jacking device to carry out the jacking, includes:
step S1, sequentially installing the base 10, the jacking frame 20 and the hydraulic oil cylinder 40 in the steel ejector pipe;
step S2, placing the pipe joints on the bottom plate 210 of the jacking frame 20;
step S3, driving the hydraulic oil cylinder 40 to extend to enable the jacking frame 20 to rise to a first preset position, and enabling at least part of the pipe joint to extend out of the hole of the steel jacking pipe;
step S4, driving the hydraulic oil cylinder 40 to shorten so as to enable the jacking frame 20 to descend to the initial position, and placing a cushion block 30 on the bottom plate 210;
step S5, driving the hydraulic oil cylinder 40 to extend to enable the cushion block 30 to be in contact with the bottom of the pipe joint, and continuing to drive the hydraulic oil cylinder to extend to enable the jacking frame 20 to ascend to a second preset position;
and S6, if the height of the second preset position is smaller than the final preset position, repeating the steps S4-S5, and continuously placing the cushion block 30 on the cushion block 30 positioned at the top of the bottom plate 210.
Specifically, step S1 is executed, the base 10, the jacking frame 20 and the hydraulic oil cylinder 40 are sequentially installed in the steel jacking pipe, the prefabricated base 10, the jacking frame 20 and the hydraulic oil cylinder 40 can be transported to a pipe joint jacking position along the steel jacking pipe through the transfer trolley, the base 10 is fixed at the bottom of the steel jacking pipe and is just opposite to a hole for jacking the pipe joint, then the supporting rod 50 is placed, and the jacking frame 20 and the hydraulic oil cylinder 40 are arranged on the supporting rod 50.
Then, step S2 is performed, in which the pipe joint is placed on the bottom plate 210 of the jacking frame 20. In this embodiment, transport the tube coupling to treating jacking position earlier and transfer to base 10 on, shift the tube coupling to the bottom plate 210 of jacking frame 20 again on, ensure the straightness that hangs down of tube coupling, place and prepare the jacking after stable.
And step S3, driving the hydraulic oil cylinder 40 to extend to raise the lifting frame 20 to a first preset position, and extending at least part of the pipe joint out of the opening of the steel jacking pipe. In the embodiment, the extending speeds of the two hydraulic oil cylinders 40 are consistent in the jacking process, whether the pipe joint horizontally rises or not is monitored by an instrument in real time, and the jacking speed is controlled within the range of 3 cm/s-7 cm/s. And if necessary, the extension of the two hydraulic oil cylinders 40 is adjusted in time to correct the deviation, so that the perpendicularity of the pipe joint is ensured. In this embodiment, the limit stroke of the hydraulic oil cylinder 40 is equal to the height of the jacking frame 20 from the initial position to the first preset position. Corresponding to the situation that when the hydraulic oil cylinder 40 is fully extended, the jacking frame 20 reaches a first preset position. It will be appreciated that further jacking of the pipe section is required due to the limited travel of the hydraulic rams when the pipe section does not reach the height at which the connection to the next pipe section is made.
Next, step S4 is executed to shorten the hydraulic cylinder 40 to lower the lifting frame 20 to the initial position, and place a set of spacers 30 on the bottom plate 210. It should be understood that the hole outlet of the steel top pipe is generally provided with a water stopping device, such as a steel compression ring, and due to the short time for placing the cushion block, the pipe section part which is ejected out of the soil has friction with the soil, and the contact surface of the pipe section and the water stopping device also has friction, so that the cushion block cannot slide off too much during the placing process.
And then executing a step S5, namely, driving the hydraulic oil cylinder 40 to extend to enable the cushion block 30 to be in contact with the bottom of the pipe joint, and continuing to drive the hydraulic cylinder to extend to enable the jacking frame 20 to ascend to a second preset position. Because the spacers 30 are disposed between the pipe sections and the bottom plate 210 of the jacking frame 20, when the hydraulic cylinder 40 is fully extended, the pipe sections are raised by the height of one spacer 30 again.
And finally, executing step S6, if the height of the second preset position is smaller than the final preset position, repeating steps S4-S5, and continuously placing the cushion block 30 on the cushion block 30 positioned at the top of the bottom plate 210. In this embodiment, the number of the spacers 30 is four, which is equivalent to that the steps S4-S5 are repeated four times, that is, after the four spacers 30 are placed on the jacking frame 20, the pipe joint reaches the preset height. It will also be appreciated that because the height between the bottom plate 210 and the pipe joints is limited, four sets of the spacers 30 cannot be placed at one time, and therefore, the spacers 30 need to be placed continuously each time the pipe joints are lifted a distance apart.
In summary, the present invention provides a vertical jacking apparatus and a jacking method thereof, for jacking pipe joints in a horizontally arranged steel jacking pipe, the vertical jacking apparatus comprising: at least one base located within the steel top tube; the jacking frame is positioned on the base and comprises a U-shaped frame and two jacking supports, the U-shaped frame is vertically arranged, an opening of the U-shaped frame is upward, the U-shaped frame comprises a bottom plate and two side plates vertically arranged on the bottom plate, the bottom plate is used for placing a pipe joint, the two jacking supports are respectively arranged at one ends of the two side plates far away from the bottom plate, and the two jacking supports are perpendicular to the side plates and extend towards opposite directions; at least one set of spacers located between the bottom plate and the pipe joints; at least two hydraulic oil cylinders are respectively arranged below the two jacking supports, and the hydraulic oil cylinders can extend or shorten along the vertical direction to enable the jacking frame to ascend or descend. The bottom plate and the pipe joints are provided with the cushion blocks, so that the height of the pipe joints can be increased under the condition that the stroke of the hydraulic oil cylinder is limited, and the pipe joints can reach the preset height conveniently. The whole device is simple in structure, flexible in arrangement, and variable in height and number of the cushion blocks, and is suitable for lifting pipes with different diameters.
The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (13)
1. The utility model provides a vertical jacking device for jacking pipe joint in the steel ejector pipe of level setting, its characterized in that includes:
at least one base located within the steel top tube;
the jacking frame is positioned on the base and comprises a U-shaped frame and two jacking supports, the U-shaped frame is vertically arranged, an opening of the U-shaped frame is upward, the U-shaped frame comprises a bottom plate and two side plates vertically arranged on the bottom plate, the bottom plate is used for placing a pipe joint, the two jacking supports are respectively arranged at one ends of the two side plates far away from the bottom plate, and the two jacking supports are perpendicular to the side plates and extend towards opposite directions;
at least one set of spacers located between the bottom plate and the pipe joints;
at least two hydraulic oil cylinders are respectively arranged below the two jacking supports, and the hydraulic oil cylinders can extend or shorten along the vertical direction to enable the jacking frame to ascend or descend.
2. The vertical jacking device as claimed in claim 1, wherein there are two bases, two bases are disposed in parallel along the axial direction of the steel jacking pipe, the vertical jacking device further comprises two support rods disposed on the bases, the support rods are perpendicular to the bases, two ends of each support rod are disposed on the two bases, and each support rod is provided with at least one hydraulic cylinder.
3. The vertical jacking device of claim 2, wherein the two support rods are vertically equal in height.
4. The vertical jacking device of claim 2, wherein the width of the bottom plate in the direction parallel to the axis of the steel jacking pipe is smaller than the distance between the two bases, and the width of the bottom plate in the direction perpendicular to the axis of the steel jacking pipe is smaller than the distance between the two support rods.
5. The vertical lift apparatus of claim 2, wherein the vertical height of the upper surface of the bottom plate is less than or equal to the vertical height of the upper surface of the base.
6. The vertical jacking device of claim 1, wherein the number of the bases is one, and the jacking frame and the hydraulic cylinder are both disposed on the bases.
7. The vertical jacking device of claim 6, wherein the base has a greater width in a direction parallel to the axis of the steel jacking pipe than the width of the base plate in a direction parallel to the axis of the steel jacking pipe.
8. The vertical jacking device of any one of claims 1 to 7, wherein the base is arcuate and the arc of the base matches the arc of the bottom of the steel jacking pipe to conform the lower surface of the base to the surface of the bottom of the steel jacking pipe.
9. The vertical jacking device of claim 8, wherein the base comprises a top wall and two arc-shaped side walls, two ends of the top wall are respectively connected with the same side of the two arc-shaped side walls, and the other side of the arc-shaped side walls is in contact with the bottom of the steel jacking pipe.
10. The vertical lift apparatus of claim 9 wherein a plurality of stiffeners are provided in the area enclosed by said top wall and said two arcuate side walls.
11. The vertical jacking device of claim 1, wherein the jacking comprises a square supporting plate and two right-angled triangle side plates, the two right-angled triangle side plates are respectively arranged on two opposite sides of the side plates, two right-angled sides of the right-angled triangle side plates are respectively connected with the side plates and the square supporting plate, and the telescopic end of the hydraulic oil cylinder is abutted to the square supporting plate.
12. A method of jacking a vertical jacking device as claimed in any one of claims 1 to 11, including:
step S1, sequentially installing a base, a jacking frame and a hydraulic oil cylinder in the steel ejector pipe;
step S2, placing the pipe joint on the bottom plate of the jacking frame;
step S3, driving the hydraulic oil cylinder to extend to enable the jacking frame to rise to a first preset position, and enabling at least part of the pipe joint to extend out of the hole of the steel jacking pipe;
step S4, the hydraulic oil cylinder is driven to shorten so that the jacking frame descends to an initial position, and a group of cushion blocks are placed on the bottom plate;
step S5, driving the hydraulic oil cylinder to extend to enable the cushion block to be in contact with the bottom of the pipe joint, and continuing to drive the hydraulic oil cylinder to extend to enable the jacking frame to ascend to a second preset position;
and S6, if the height of the second preset position is smaller than the final preset position, repeating the steps S4-S5, and continuously placing a cushion block on the cushion block positioned at the top of the bottom plate.
13. A method of jacking a vertical jacking device as claimed in claim 12, wherein the limit of travel of the hydraulic ram is equal to the height at which the jacking frame is raised to the first predetermined position.
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| CN202010549212.0A CN111577976A (en) | 2020-06-16 | 2020-06-16 | Vertical jacking device and jacking method thereof |
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| CN202010549212.0A CN111577976A (en) | 2020-06-16 | 2020-06-16 | Vertical jacking device and jacking method thereof |
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| CN111577976A true CN111577976A (en) | 2020-08-25 |
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| CN202010549212.0A Pending CN111577976A (en) | 2020-06-16 | 2020-06-16 | Vertical jacking device and jacking method thereof |
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