Freely detachable intermediate jacking station device applied to mechanical pipe jacking

Abstract

The utility model discloses a freely detachable intermediate jacking station device applied to mechanical pipe jacking. The intermediate jacking station device shrinks to the minimum thickness through the hydraulic rod, and the intermediate jacking station device can easily move horizontally in a pipeline through the rolling device arranged on the hard shell; the bearing device is directly attached to the inner wall of a pipe joint, after the bearing device is effectively connected with a pre-embedded sleeve on the inner wall of the pipe joint through a bolt, the jack arranged between the bearing devices in the circumferential direction provides counter-acting force to complete the jacking force effect of the intermediate jacking station, and the defect that a traditional intermediate jacking station cannot be added after the pipe joint is completed is effectively overcome. Meanwhile, the device is convenient to disassemble and assemble and can be repeatedly used, so that the use cost of the intermediate jacking station is reduced; for a complex stratum, the use of the intermediate jacking station can be encrypted, the deviation rectifying capacity of pipe jacking construction is effectively improved, and then the precision of the pipe jacking construction is improved; and meanwhile, when an emergency occurs, the jacking force of the jacking pipe can be increased through the dense use of the intermediate jacking station, the locked jacking pipe is released in time, and the construction fault-tolerant capability of the jacking pipe is improved.

Description

Technical Field

[0001] The utility model relates to a pipe jacking construction technology, in particular to a freely detachable relay room device used for mechanical pipe jacking. Background Art

[0002] The pipe jacking relay room is a technology used in long-distance pipe jacking construction. By setting up a relay room during pipeline construction, segmented jacking can be achieved to ensure the continuity and stability of the pipeline.

[0003] In long-distance pipe jacking construction, relay rooms play a vital role. They are usually located in a closed annular chamber in the middle of a pipe section, used for segmented jacking to ensure the continuity of construction. The setting of relay rooms helps to reduce the difficulty and risk of single construction, especially when encountering poor strata, and can flexibly adjust construction plans and technical measures to ensure construction safety and quality stability. In addition, the relay room is also responsible for receiving the end of the previous section of the pipeline, docking and sealing, and then continuing to move forward until the construction of the entire tunnel or pipeline is completed.

[0004] The production cost of traditional pipe jacking relay rooms is relatively high, and after the pipeline is penetrated, except for the hydraulic jack, the other parts are permanently left in the pipeline. Therefore, in actual construction, from the perspective of cost saving, practitioners are often cautious in using relay rooms. Although theoretical calculations can provide certain guidance for the use of relay rooms, there are many uncertainties in underground projects, especially in complex strata for long-distance jacking. The machine head is often trapped due to geological mutations. At this time, if the relay room is not added in advance, or the number of relay rooms added is too small, the jacking force provided is insufficient, and the machine head cannot be freed. Generally speaking, the use of traditional relay rooms is highly restricted, inconvenient to use, and not conducive to pipe jacking construction. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the utility model proposes a freely detachable relay room device used for mechanical pipe jacking.

[0006] The utility model is a freely detachable relay device applied to mechanical pipe jacking, which is used to connect the previous pipe section and the next pipe section. The freely detachable relay device comprises: a hard shell, a rolling device, a fixed supporting device, a movable supporting device, a hydraulic rod, a jack, bolts, screw holes, an anchoring structure and a short shell; wherein the top of each pipe section is a socket, and the end is a socket ring, the outer diameter of the socket is smaller than the inner diameter of the socket ring, the length of the socket ring is not less than the stroke of the jack, and the socket of the next pipe section is inserted into the socket ring of the previous pipe section; an anchoring structure is pre-buried at the position where the hard shell and the short shell need to be connected in each pipe section;

[0007] The outer diameter of the rigid outer shell is not greater than the inner diameter of the pipe section, and the rigid outer shell extends into the pipe section; screw holes are provided on the side wall of the rigid outer shell at positions consistent with the anchoring structures pre-buried in the subsequent pipe section; bolts pass through the side wall of the steel outer shell through the corresponding screw holes and extend into the anchoring structures in the subsequent pipe section to fix the steel outer shell inside the front part of the subsequent pipe section; an annular fixed supporting device is fixed on the inner wall of the steel outer shell; an annular moving supporting device is fixed on the inner wall of the short cylindrical outer shell, and screw holes are provided on the side wall of the short cylindrical outer shell at positions consistent with the anchoring structures pre-buried in the previous pipe section, and bolts pass through the side wall of the short cylindrical outer shell through the corresponding screw holes and extend into the anchoring structures in the previous pipe section to fix the short cylindrical outer shell inside the tail part of the previous pipe section, and at the same time fix the annular moving supporting device on the inner wall of the tail part of the previous pipe section; a plurality of jacks are evenly arranged circumferentially inside the rigid outer shell, the end of each jack is fixed on the fixed supporting device of the subsequent pipe section, and the front end of each jack abuts against the moving supporting device of the previous pipe section; a plurality of hydraulic rods are evenly arranged circumferentially inside the rigid outer shell, the end of each hydraulic rod is fixed on the fixed supporting device of the subsequent pipe section, the front end of the hydraulic rod is fixed on the moving supporting device of the previous pipe section, the extended length of the hydraulic rod is not less than the stroke of the jack, and the hydraulic rod is connected with the fixed supporting device of the subsequent pipe section and the moving supporting device of the previous pipe section to form a whole; a plurality of through holes evenly distributed circumferentially are provided on the side wall of the rigid outer shell, and a rolling device is respectively arranged in each through hole, so that a plurality of rolling devices are evenly arranged circumferentially on the side wall of the rigid outer shell, and the rolling device can move along the inner wall of the pipe section;

[0008] The rigid outer shell, the rolling device, the fixed supporting device, the moving supporting device, the hydraulic rod and the jack form a telescopic device; after the function of the relay room is completed, the bolts are removed from the screw holes to release the fixation of the telescopic device and the pipe section, and the telescopic device exits the pipe section by moving along the inner wall of the pipe section through the rolling device.

[0009] The fixed supporting device and the moving supporting device adopt flanges, the flange includes a flange joint and a ribbed plate, and the flange joint is an annular plate; in the fixed supporting device, a plurality of ribbed plates evenly distributed axially are arranged on the rear surface of the flange joint; in the moving supporting device, a plurality of ribbed plates evenly distributed axially are arranged on the front surface of the flange joint; the ribbed plates are perpendicular to the flange.

[0010] The present utility model lengthens the length of the extended socket ring, which is not less than the stroke of the jack, so that it can match the stroke of the relay room jack.

[0011] According to the minimum thickness of the relay section, an anchoring structure is pre-embedded at an appropriate position of adjacent pipe segments. When the jacks and hydraulic rods are fully retracted, this is the minimum thickness of the expansion device. At this time, the center line positions of the fixed support device and the moving support device should coincide with the joint position between the previous pipe segment and the next pipe segment; the position of the pre-embedded anchoring structure is reinforced with additional steel bars to form a concealed beam for local strengthening of the reinforced concrete pipe. The anchoring structure uses a sleeve.

[0012] Furthermore, the utility model further includes an adjusting gasket. An adjusting gasket is arranged between the outer wall of the rigid outer shell and the inner wall of the pipe segment to fill the gap between the outer wall of the rigid outer shell and the inner wall of the pipe segment.

[0013] The utility model further includes a water stop ring. An annular water stop ring is arranged between the inner wall of the socket ring of the previous pipe segment and the outer wall of the spigot of the next pipe segment, so as to form a sealed space with the socket ring of the previous pipe segment.

[0014] The rigid outer shell and the short-section outer shell are made of steel materials. The materials of the adjusting gasket and the water stop ring are rubber.

[0015] The anchoring structure uses a sleeve. The sleeve is perpendicular to the axial direction of the pipe segment, and the specification of the sleeve is adapted to the specification of the bolt. The rolling device uses a pulley or a roller.

[0016] The number of hydraulic rods is 8 - 15; the number of jacks is 8 - 15; the number of pulleys is 8 - 15.

[0017] Reaction force is provided by the jacks evenly arranged circumferentially to push the moving support device at the front end of the jacks to drive the previous pipe segment forward, realizing the jacking force function of the relay section; and the connection between the previous pipe segment and the next pipe segment during the propulsion process is realized through the hydraulic rods evenly arranged circumferentially. After the relay section completes its functional role, the bolts are removed from the screw holes, thereby releasing the fixation between the expansion device and the pipe segment, and the expansion device is moved out of the pipe segment along the inner wall of the pipe segment through the rolling device. The advantages of the utility model are:

[0018] The relay room device of the present utility model shrinks to the minimum thickness through the hydraulic rod, and is easily translated in the pipeline through the rolling device arranged on the hard outer shell; the present utility model is directly attached to the inner wall of the pipe section. After the supporting device and the embedded sleeve on the inner wall of the pipe section are effectively connected by bolts, the reaction force is provided by the jacks arranged circumferentially between the supporting devices to complete the jacking force of the relay room, effectively solving the defect that the traditional relay room cannot be added after the pipe section is completed; at the same time, the device is easy to disassemble and assemble, can be reused, and greatly reduces the use cost of the relay room; for complex strata, because the present utility model has a lower use cost compared with the traditional relay room, the use of the relay room can be encrypted, the deviation correction ability of the pipe jacking construction can be effectively improved, and then the precision of the pipe jacking construction can be improved; at the same time, in case of emergencies, the encrypted use of the relay room can increase the pipe jacking force, enable the stuck pipe jacking to get out of trouble in time, and improve the construction fault tolerance ability of the pipe jacking. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. is a schematic diagram of the internal structure of a pipe section of an embodiment of the detachable relay room device applied to mechanical pipe jacking of the present utility model;

[0020] Figure 2 FIG. is a schematic diagram of a flange of an embodiment of the detachable relay room device applied to mechanical pipe jacking of the present utility model;

[0021] Figure 3 FIG. is a partial sectional view of an embodiment of the detachable relay room device applied to mechanical pipe jacking of the present utility model;

[0022] Figure 4 FIG. is a schematic diagram of a connection cross-section of an embodiment of the detachable relay room device applied to mechanical pipe jacking of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The present utility model will be further described below with reference to the drawings through specific embodiments.

[0024] As Figures 1 to 4As shown, the freely detachable relay room device applied to mechanical pipe jacking of this embodiment is used to connect the previous pipe section with the next pipe section. The freely detachable relay room device includes: a hard shell 1, a rolling device 2, a fixed flange 3, a movable flange, a hydraulic rod 4, a jack 5, a bolt 6, an adjustment gasket 7, a screw hole 8, a water stop ring 11, a sleeve 12 and a short shell 14; wherein, the fixed supporting device adopts a fixed flange 3, and the movable supporting device adopts a movable flange; the anchoring structure adopts a sleeve 12; the top of each pipe section 13 is a socket, and the end is a socket ring 10, the outer diameter of the socket is smaller than the inner diameter of the socket ring, and the length of the socket ring is lengthened, The length is not less than the stroke of the jack, so that it can match the stroke of the jack in the relay room. The socket of the rear pipe section is inserted into the socket ring of the previous pipe section; two circles of annular water stop rings 11 are arranged between the inner wall of the socket ring of the previous pipe section and the outer wall of the socket of the rear pipe section, so as to form a sealed space with the socket ring of the previous pipe section; a cylindrical sleeve 12 is embedded in the position where the hard shell and the short shell 14 need to be connected in each pipe section, the position where the hard shell needs to be connected in each pipe section is located at the front, and the position where the short shell 14 needs to be connected is located at the tail, the sleeve 12 is perpendicular to the axial direction of the pipe section, and the specification of the sleeve 12 should be adapted to the specification of the bolt 6;

[0025] The outer diameter of the rigid outer shell 1 is not greater than the inner diameter of the pipe section, and the rigid outer shell 1 extends into the pipe section; an adjusting gasket 7 is arranged between the outer wall of the rigid outer shell 1 and the inner wall of the pipe section to fill the gap between the outer wall of the rigid outer shell 1 and the inner wall of the pipe section; screw holes are provided on the side wall of the rigid outer shell 1 at positions consistent with the embedded sleeves 12 of the subsequent pipe section; bolts 6 pass through the side wall of the steel shell through the corresponding screw holes and extend into the sleeves 12 inside the subsequent pipe section to fix the steel shell inside the front part of the subsequent pipe section; an annular fixed flange 3 is fixed on the inner wall of the steel shell; a movable flange is fixed on the inner wall of the short stub shell 14 in a cylindrical shape, and screw holes are provided on the side wall of the short stub shell 14 at positions consistent with the embedded sleeves 12 of the previous pipe section; bolts 6 pass through the side wall of the short stub shell 14 through the corresponding screw holes and extend into the sleeves 12 inside the previous pipe section to fix the short stub shell 14 inside the tail part of the previous pipe section, and at the same time fix the annular movable flange on the inner wall of the tail part of the previous pipe section; 10 jacks are evenly arranged circumferentially inside the rigid outer shell 1, the end of each jack is fixedly welded to the fixed flange 3 of the subsequent pipe section, and the front end of each jack abuts against the movable flange of the previous pipe section; 10 hydraulic rods 4 are evenly arranged circumferentially inside the rigid outer shell 1, the end of each hydraulic rod 4 is fixed to the fixed flange 3 of the subsequent pipe section, the front end of the hydraulic rod 4 is fixed to the movable flange of the previous pipe section, the extended length of the hydraulic rod 4 is not less than the stroke of the jack, and the hydraulic rod 4 is connected to the fixed flange 3 of the subsequent pipe section and the movable flange of the previous pipe section to form an integral body; 10 through holes are evenly distributed circumferentially on the side wall of the rigid outer shell 1, and a rolling device 2 is welded in each through hole respectively, so that 10 rolling devices 2 are evenly arranged circumferentially on the side wall of the rigid outer shell 1, and the rolling device 2 can move along the inner wall of the pipe section;

[0026] The rigid outer shell 1, the rolling device 2, the fixed flange 3, the movable flange, the hydraulic rod 4 and the jack form a telescopic device; after the function of the relay room is completed, the bolts 6 are removed from the screw holes, so as to release the fixation of the telescopic device and the pipe section, and the telescopic device is withdrawn from the pipe section by moving along the inner wall of the pipe section through the rolling device 2.

[0027] The flange includes a flange joint and a ribbed plate 9, and the flange joint is an annular plate; in the fixed flange 3, a ribbed plate is arranged on the rear surface of the flange joint to improve the structural strength and reduce the influence of stress during the working process; in the movable flange, a ribbed plate is arranged on the front surface of the flange joint.

[0028] In this embodiment, the socket ring 10 is a steel socket steel ring; the rigid outer shell and the short stub shell 14 are made of Q345 steel; the materials of the adjusting gasket 7 and the water stop ring 11 are rubber; the sleeve 12 is a steel bar sleeve; the bolt 6 is an anchor bolt; the rolling device 2 is a roller.

[0029] The installation method of the freely detachable relay room device applied to mechanical pipe jacking of this embodiment includes the following steps:

[0030] 1. Push the telescopic device to the connection position of the next pipe section through the rolling device 2 arranged on the outside of the hard shell 1;

[0031] 2. Adjust the telescopic device so that the screw hole 8 set on the hard shell is aligned with the pre-buried sleeve 12 in the next pipe section. The gap between them is filled by adjusting the gasket 7, and the bolt 6 is screwed in to complete the fixation of the telescopic device and the next pipe section.

[0032] 3. Start the hydraulic jack 5, the two adjacent pipe sections are stretched open, and the hydraulic rod 4 is opened synchronously; the moving flange fixed to the short-section shell is pushed out, driving the previous pipe section to be pushed out;

[0033] 4. The two circles of water stop rings 11 pre-buried at the front end of the rear pipe segment and the extended socket ring 10 of the front pipe segment form a sealed space to ensure that the thixotropic mud does not flow into the pipe segment;

[0034] 5. The jack in the working well pushes forward, the jack 5 and the hydraulic rod 4 in the telescopic device shrink, and the pushed-out moving flange is pushed back again;

[0035] 6. After the pipe jacking operation is completed, remove the bolts 6 and the adjusting gaskets, use the rolling device 2 to push out the telescopic device, and hoist it out of the working well.

[0036] Finally, it should be noted that the purpose of publishing the embodiments is to help further understand the present invention, but those skilled in the art can understand that various substitutions and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the present invention should not be limited to the contents disclosed in the embodiments, and the scope of protection claimed by the present invention shall be subject to the scope defined in the claims.

Claims

1. A freely detachable relay chamber device for mechanical pipe jacking, which is used to connect the previous pipe section and the subsequent pipe section, and is characterized in that, The freely detachable relay room device comprises: a hard shell, a rolling device, a fixed supporting device, a movable supporting device, a hydraulic rod, a jack, bolts, screw holes, an anchoring structure and a short shell; wherein the top of each pipe section is a socket, and the end is a socket ring, the outer diameter of the socket is smaller than the inner diameter of the socket ring, the length of the socket ring is not less than the stroke of the jack, and the socket of the latter pipe section is inserted into the socket ring of the former pipe section; an anchoring structure is pre-buried at the position where the hard shell and the short shell need to be connected in each pipe section; The outer diameter of the hard shell is not larger than the inner diameter of the pipe section, and the hard shell extends into the pipe section; a screw hole is provided on the side wall of the hard shell, which is consistent with the position of the pre-buried anchoring structure of the subsequent pipe section; the bolt passes through the side wall of the steel shell through the corresponding screw hole and extends into the corresponding anchoring structure in the subsequent pipe section, fixing the steel shell to the front part of the subsequent pipe section; the annular fixed supporting device is fixed to the inner wall of the steel shell; the annular movable supporting device is fixed to the inner wall of the cylindrical short shell, and a screw hole is provided on the side wall of the short shell, which is consistent with the position of the pre-buried anchoring structure of the previous pipe section, and the bolt passes through the side wall of the short shell through the corresponding screw hole and extends into the corresponding anchoring structure in the previous pipe section, fixing the short shell to the tail of the previous pipe section, and fixing the annular movable supporting device to the inner wall of the tail of the previous pipe section; A plurality of jacks are evenly arranged in the shell along the circumferential direction, the end of each jack is fixed on the fixed supporting device of the next pipe section, and the front end of each jack is against the movable supporting device of the previous pipe section; a plurality of hydraulic rods are evenly arranged in the hard shell along the circumferential direction, the end of each hydraulic rod is fixed on the fixed supporting device of the next pipe section, and the front end of the hydraulic rod is fixed on the movable supporting device of the previous pipe section, the unfolded length of the hydraulic rod is not less than the stroke of the jack, and the hydraulic rod is connected with the fixed supporting device of the next pipe section and the movable supporting device of the previous pipe section to form a whole; a plurality of through holes evenly distributed in the circumferential direction are opened on the side wall of the hard shell, and a rolling device is respectively arranged in each through hole, so that a plurality of rolling devices are evenly arranged in the circumferential direction on the side wall of the hard shell, and the rolling device can move along the inner wall of the pipe section; The telescopic device is composed of a hard shell, a rolling device, a fixed supporting device, a movable supporting device, a hydraulic rod and a jack; after completing the function of the relay room, the bolts are removed from the screw holes to release the fixation of the telescopic device and the pipe section, and the telescopic device is moved along the inner wall of the pipe section by the rolling device, so that the telescopic device withdraws from the pipe section.

2. The freely detachable relay room device according to claim 1, wherein The fixed supporting device and the movable supporting device adopt flanges, and the flanges include flange joints and ribbed plates, and the flange joints are annular plates; in the fixed supporting device, a plurality of ribbed plates evenly distributed along the axial direction are arranged on the rear surface of the flange joint; in the movable supporting device, a plurality of ribbed plates evenly distributed along the axial direction are arranged on the front surface of the flange joint; the ribbed plates and the flanges are perpendicular to each other.

3. The detachable relay room device according to claim 1, wherein The hard shell is made of steel; the short shell is made of steel; and the adjusting gasket is made of rubber.

4. The detachable relay room device according to claim 1, wherein It further includes an adjusting gasket which is arranged between the outer wall of the rigid housing and the inner wall of the pipe joint to fill the gap between the outer wall of the rigid housing and the inner wall of the pipe joint.

5. The detachable relay room device according to claim 1, wherein It further includes a water stop ring. An annular water stop ring is arranged between the inner wall of the socket ring of the previous pipe joint and the outer wall of the socket of the next pipe joint, so as to form a sealed space with the socket ring of the previous pipe joint.

6. The detachable relay room device according to claim 1, wherein The anchoring structure adopts a sleeve which is perpendicular to the axial direction of the pipe joint, and the specification of the sleeve is adapted to the specification of the bolt.

7. The detachable relay room device according to claim 1, wherein The rolling device adopts a pulley or a roller.

8. The detachable relay room device according to claim 1, wherein, The number of the hydraulic rods is 8 to 15; the number of the jacks is 8 to 15; the number of the pulleys is 8 to 15.

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