CN220667558U - Rollback device of push bench - Google Patents
Rollback device of push bench Download PDFInfo
- Publication number
- CN220667558U CN220667558U CN202322317778.2U CN202322317778U CN220667558U CN 220667558 U CN220667558 U CN 220667558U CN 202322317778 U CN202322317778 U CN 202322317778U CN 220667558 U CN220667558 U CN 220667558U
- Authority
- CN
- China
- Prior art keywords
- cross beam
- end cross
- push bench
- plate
- rear end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 67
- 239000010959 steel Substances 0.000 claims description 67
- 238000003466 welding Methods 0.000 claims description 19
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 238000000926 separation method Methods 0.000 abstract description 15
- 238000005192 partition Methods 0.000 description 21
- 210000001503 joint Anatomy 0.000 description 10
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a push bench rollback device, which comprises a traction rod extending forwards and backwards along the axial direction of a pipe joint, wherein one end of the traction rod is connected with a rear end cross beam which is bridged on a separation cavity flange plate at the tail part of the push bench, the other end of the traction rod is connected with a front end cross beam outside a hole, two ends of the front end cross beam are positioned at two sides of the hole, the front end cross beams positioned at two sides of the hole are respectively abutted with a telescopic ejection structure, and a pad rail for sliding the front end cross beam is arranged below the front end cross beam. The push bench rollback device is simple in structure, convenient to operate and capable of safely exiting the push bench.
Description
Technical Field
The utility model belongs to the field of pipe pushing machine construction, and particularly relates to a pipe pushing machine rollback device.
Background
The push bench head is in the push bench initial section because of stratum bearing capacity, dead weight etc. cause and take place to plant the trend very easily to lead to each tube coupling junction to appear the gap condition of drawing big, the push bench is in "planting the head" condition simultaneously, can lead to hole outer seal rubber ring lower part to appear the condition of turning up, can not guarantee that push bench can be tunneled according to established axis. Except that the steel plate connection mode is adopted to temporarily connect all the pipe joints, the occurrence of the condition of 'disjointing' of the pipe joints is avoided, the push bench and the pipe joints are required to be retracted as soon as possible, and the initiation is carried out again.
Disclosure of Invention
The utility model provides a push bench rollback device, which aims to solve the rollback problem of a push bench in the prior art. The technical scheme adopted by the utility model is as follows:
the utility model provides a push bench device that falls back, its includes along the pull rod that pipe section axial extends forward and backward, the one end of pull rod is connected with the rear end crossbeam of crossing on the compartment flange board of push bench afterbody, the other end of pull rod is connected with the outside front end crossbeam in entrance to a cave, two tip of front end crossbeam are located the both sides in entrance to a cave, the both sides of front end crossbeam respectively with telescopic ejection structure butt, the below of front end crossbeam is equipped with the pad rail that supplies the front end crossbeam to slide.
Further, the rear end cross beam transversely bridges over the separation cavity flange plate at the tail part of the push bench (the separation cavity flange plate is annular, the separation cavity flange is connected with the tail part of the push bench), the length of the rear end cross beam is smaller than the inner diameter of the separation cavity flange plate, but is generally larger than the length of the 4 o 'clock and 8 o' clock connecting line of the separation cavity flange plate (the separation cavity flange plate is regarded as a dial plate), the rear end cross beam bridges over the lower part of the separation cavity flange plate, the rear end cross beam is positioned at the position of the 4 o 'clock and 8 o' clock connecting line of the separation cavity flange plate, for example, bridges over the position of 1/5-1/3 of the vertical height of the separation cavity flange plate, and the rear end cross beam is preferably in a horizontal state.
Further, the rear end cross beam comprises one or more first H-section steel (preferably 2-3 first H-section steel), the plurality of first H-section steel are connected side by side in the axial direction of the pipe section (the long sides of the first H-section steel overlap with the long sides), the flanges of adjacent first H-section steel are preferably perpendicular to the axial direction of the pipe section, the flanges of adjacent first H-section steel are connected by a plurality of first bolts and then welded, the outermost flange plate (which is not in butt joint with the flanges of adjacent first H-section steel) is fixed with a first ribbed plate, preferably the outermost flange plate is connected with the first ribbed plate by a first bolt and then welded (which is fastened by bolts before welding, deformation caused by welding is avoided while the integrity is ensured), the top edge and the bottom edge of the first ribbed plate are provided with grooves for increasing the welding area, the traction rod is connected with the first ribbed plate of the rear end cross beam, the traction rod is connected (e.g. welded) with a first reinforcement, and the single first flange plate is connected (e.g. welded) with one or more first ribbed plates perpendicular to the first ribbed plate.
Further, the traction rods are vertically connected with the rear end cross beam and the front end cross beam, the number of the traction rods can be 2-4, preferably 3, the traction rods are sequentially distributed at intervals along the length direction of the rear end cross beam or the front end cross beam, the traction rods are preferably arranged in parallel, the length of each traction rod is n+1 times of the length of one pipe (N represents the number of the withdrawn single pipe, and the more than 1 times is the working space required for cutting the traction rods).
Further, the traction rod is I-steel, and the flange plate of the I-steel is preferably in a horizontal state.
Further, the front end cross beam is vertically connected with the traction rod, the length of the front end cross beam is larger than the outer diameter of the pipe joint, the length of the front end cross beam can enable ejection mechanisms on two sides of the hole to abut against the front end cross beam, and the length of the front end cross beam is preferably slightly larger than the sum of the outer diameter of the pipe joint and the cylinder diameter of the 2-time telescopic hydraulic cylinder, for example, 1-1.5m larger.
Further, the front end beam includes one or more second H-section steel (preferably 2-3 second H-section steel), the plurality of second H-section steel are connected side by side in the axial direction of the pipe section (the long side of the second H-section steel overlaps with the long side), the flange plates of the adjacent second H-section steel are preferably perpendicular to the axial direction of the pipe section, the flange plates of the adjacent second H-section steel are connected by a plurality of second bolts and then welded, the outermost flange plate (without abutting the flange plates of the adjacent second H-section steel) is fixed with a second rib plate, preferably the outermost flange plate is connected with the second rib plate by a second bolt and then welded, the top edge and the bottom edge of the second rib plate are provided with grooves for increasing the welding area, the traction rod is connected with the second rib plate of the front end beam facing the hole, the traction rod is connected (e.g. welded) with a second reinforcing sloping plate, one or more (e.g. two second reinforcing plates) are connected between the flanges of the single second H-section steel and are perpendicular to the second reinforcing plates.
Further, the push-out structure is a telescopic hydraulic cylinder, the push-out structure is two and is respectively positioned at two sides of the hole, the telescopic direction of the push-out structure is parallel to the traction rod, the front end cross beam is far away from the hole when the push-out structure stretches out, the front end cross beam transmits the acting force to the rear end cross beam through the traction rod, so that the push bench is retracted towards the hole, when a section of pipeline completely exits from the hole, the traction rod is cut, the traction rod and the front end cross beam are separated, the pipeline is withdrawn from the traction rod, the pipeline is lifted out of the working well, then a section of traction rod (the length of which is cut is equal to the length of a section of pipeline for example) is cut off and then welded with the front end cross beam again, the push bench is retracted outwards continuously, and the operation is repeated until the whole push bench is retracted completely.
Further, a plurality of support rods for supporting the traction rods are arranged on the transverse frames in the pipe joints, and the support rods are in a horizontal state.
Further, the length direction of the pad rail is consistent with the axial direction of the pipe joint. The pad rail is a common double-rail.
The utility model has the beneficial effects that:
according to the push bench rollback device, rollback acting force is applied to the push bench through the rear end cross beam transversely arranged on the flange, the ejection structure is arranged on two sides of the hole and applies thrust to the front end cross beam, the pipe joints are withdrawn to the working well through the cross beam and the traction rod which are arranged in sequence, and finally the push bench is withdrawn.
Drawings
Fig. 1 is a schematic structural view of a push bench rollback apparatus according to the present utility model.
Fig. 2 is an enlarged view at a in fig. 1.
Fig. 3 is an enlarged view at B in fig. 1.
Fig. 4 is a schematic connection diagram of a push bench rollback device and a flange plate of a separation chamber according to the present utility model.
Fig. 5 is a view showing a state of use of the push bench rollback apparatus of the present utility model outside the tunnel portal.
Fig. 6 is a schematic view of a weld groove.
Reference numerals:
1-pipe joint, 2-traction rod, 3-separation cavity flange plate, 4-rear end beam, 41-first H-shaped steel, 42-flange plate of first H-shaped steel, 43-first bolt, 44-first ribbed plate, 45-first reinforcing inclined plate, 46-first reinforcing plate, 47-groove, 5-front end beam, 51-second H-shaped steel, 52-flange plate of second H-shaped steel, 53-second bolt, 54-second ribbed plate, 55-second reinforcing inclined plate, 56-second reinforcing plate, 6-hole, 7-ejection structure and 8-pad rail.
Detailed Description
The utility model is further described below with reference to the drawings.
As shown in fig. 1-6, a push bench rollback device comprises a traction rod 2 extending forwards and backwards along the axial direction of a pipe joint 1, one end of the traction rod 2 is connected with a rear end beam 4 which is bridged on a separation cavity flange plate 3 at the tail part of the push bench, the other end of the traction rod 2 is connected with a front end beam 5 outside a hole, two ends of the front end beam 5 are positioned at two sides of the hole 6, two sides of the front end beam 5 are respectively abutted with a telescopic ejection structure 7, and a pad rail 8 for sliding the front end beam 5 is arranged below the front end beam 5.
The rear end cross beam 4 is transversely bridged on the partition flange plate 3 at the tail part of the push bench (the partition flange plate 3 is annular, the partition flange is connected with the tail part of the push bench), the length of the rear end cross beam 4 is smaller than the inner diameter of the partition flange plate 3, but is generally larger than the length of the connecting line of 4 o 'clock and 8 o' clock of the partition flange plate 3 (the partition flange plate 3 is regarded as a dial plate), so that the rear end cross beam 4 can be sleeved into the partition flange plate and bridged on the lower part of the partition flange plate 3, two ends of the rear end cross beam 4 are blocked by the partition flange plate 3, the rear end cross beam 4 is positioned at the connecting line of 4 o 'clock and 8 o' clock of the partition flange plate 3, for example, the position of bridging 1/5-1/3 of the vertical height of the partition flange plate 3, and the rear end cross beam 4 is in a horizontal state.
The rear end cross member 4 includes one or more first H-section steel 41 (preferably 2-3 first H-section steel 41), the plurality of first H-section steel 41 are connected side by side in the axial direction of the pipe section 1 (the long sides of the first H-section steel 41 overlap with the long sides, the outer surfaces of the abutting flanges of the adjacent first H-section steel 41 overlap), the flange 42 of the first H-section steel 41 is preferably perpendicular to the axial direction of the pipe section 1, the flanges of the adjacent first H-section steel 41 are connected by a plurality of first bolts 43 and then are welded, the outermost flange (without abutting the flanges of the adjacent first H-section steel 41) is preferably fixed with a first rib plate 44, the outermost flange is preferably connected with the first rib plate 44 by a first bolt 43 and then is welded (before welding, bolts are used for fastening), deformation due to welding is avoided while the integrity is ensured), the top edge and the bottom edge of the first rib plate 44 are provided with grooves 47 (as shown in fig. 6) for increasing the welding area, the traction rod 2 is connected with the first rib plate 44 of the rear end cross member 4, the first rib plate 2 is connected with the first rib plate 46 (without abutting the flanges of the adjacent first H-section steel 41) by the first rib plate 44 is connected with the first rib plate 46 (for example, the first rib plate 46 is connected by the first rib plate 46 is welded by the first rib plate 46, and the first rib plate 46 is connected by the first rib plate 46 is welded by the vertical plate.
The traction rods 2 are vertically connected with the rear end cross beam 4 and the front end cross beam 5, the number of the traction rods 2 can be 2-4, preferably 3, the traction rods 2 are sequentially distributed at intervals along the length direction of the rear end cross beam 4 or the front end cross beam 5, the traction rods 2 are preferably arranged in parallel, the length of each traction rod 2 is N+1 times of the length of one pipe (N represents the number of the withdrawn single pipe, and the more than 1 times is the working space required for cutting the traction rods).
The traction rod 2 is I-steel, and the flange plate of the I-steel is preferably in a horizontal state.
The front end cross beam 5 is vertically connected with the traction rod 2, the length of the front end cross beam 5 is larger than the outer diameter of the pipe joint 1, the length of the front end cross beam 5 can enable ejection mechanisms on two sides of a hole to abut against the front end cross beam 5, and the length of the front end cross beam 5 is preferably slightly larger than the sum of the outer diameter of the pipe joint and the cylinder diameter of the 2-time telescopic hydraulic cylinder, for example, 1-1.5m.
The front end cross beam 5 comprises one or more second H-section steel 51 (preferably 2-3 second H-section steel), the plurality of second H-section steel 51 are connected side by side in the axial direction of the pipe joint 1 (i.e. the long sides of the second H-section steel 51 are arranged side by side, the outer surfaces of the abutting flanges of the adjacent second H-section steel are overlapped), the flange plates 52 of the second H-section steel 51 are preferably perpendicular to the axial direction of the pipe joint 1, the flanges of the adjacent second H-section steel are connected by a plurality of second bolts 53 and then welded, the outermost flange plates (without abutting the flanges of the adjacent second H-section steel) are fixed with second rib plates 54, preferably the outermost flange plates are connected with the second rib plates 54 by the second bolts and then welded, the top edges and the bottom edges of the second rib plates 54 are provided with grooves (similar to the first rib plates) for increasing the welding area, the traction rod 2 is connected with the second rib plates facing the openings 6 of the front end cross beam 5, the traction rod 2 is connected with the second rib plates (for example) by welding, the second rib plates 55 are connected with the second rib plates or the second rib plates 56 are connected with the second rib plates 56 by the second rib plates.
The two ejection structures 7 are respectively positioned at two sides of the hole 6, and the expansion direction of the ejection structures 7 is parallel to the traction rod 2.
The inside crossbearer of tube coupling 1 has a plurality of bracing pieces that are used for supporting traction lever 2, and the bracing piece is the horizontality.
The length direction of the pad rail is consistent with the axial direction of the pipe joint 1.
When the push bench is used, the rear end cross beam 4 transversely bridges over the separation cavity flange plate 3 at the tail part of the push bench, two ends are propped against the separation cavity flange plate 3 at the back, telescopic ejection structures 7 arranged at two sides of the hole are propped against two sides of the front end cross beam 5, the ejection structures 7 extend out to give the front end cross beam 5 an acting force away from the hole 6, the front end cross beam 5 transmits the acting force to the rear end cross beam 4 through the traction rod 2, so that the push bench is retracted towards the hole 6, when a section of pipeline completely exits from the hole 6, the traction rod 2 is cut, the traction rod 2 and the front end cross beam 5 are separated, the pipeline is withdrawn from the traction rod 2, the pipeline is lifted out of a working well, then a section of traction rod 2 (the length cut is equal to the length of a section of pipeline) is cut off and then welded with the front end cross beam 5 again, the push bench is retracted outwards continuously, and the operation is repeated until the whole push bench is completely retracted.
Example 1
The utility model provides a push bench device that falls back, its includes along the pull rod 2 that pipe section 1 axial extends back and forth, the one end of pull rod 2 is connected with the rear end crossbeam 4 that spans across on the compartment flange board 3 of push bench afterbody, the other end of pull rod 2 is connected with the outside front end crossbeam 5 in entrance to a cave, two tip of front end crossbeam 5 are located the both sides in entrance to a cave 6, the both sides of front end crossbeam 5 respectively with telescopic ejection structure 7 butt, the below of front end crossbeam 5 is equipped with the pad rail 8 that supplies front end crossbeam 5 to slide.
The rear end cross beam 4 transversely bridges over the partition cavity flange plate 3 at the tail part of the push bench, the partition cavity flange plate 3 is annular, the partition cavity flange is connected with the tail part of the push bench, the length of the rear end cross beam 4 is smaller than the inner diameter of the partition cavity flange plate 3, but is larger than the length of a 4 o 'clock and 8 o' clock connecting line of the partition cavity flange plate 3 (the partition cavity flange plate 3 is regarded as a dial plate), so that the rear end cross beam 4 can be sleeved into the partition cavity flange plate and bridges over the lower part of the partition cavity flange plate 3, two ends of the rear end cross beam 4 are blocked by the partition cavity flange plate 3, the rear end cross beam 4 is positioned at the position of the 4 o 'clock and 8 o' clock connecting line of the partition cavity flange plate 3, and the rear end cross beam 4 is in a horizontal state.
The rear end beam 4 comprises two first H-section steel 41, the two first H-section steel 41 are connected side by side in the axial direction of the pipe joint 1, namely, the long edge of the first H-section steel 41 overlaps with the long edge, the outer surfaces of the butt joint flanges of the adjacent first H-section steel are overlapped, the flanges 42 of the first H-section steel 41 are perpendicular to the axial direction of the pipe joint 1, the flanges of the adjacent first H-section steel 41 are connected through a plurality of first bolts 43 and then are connected through welding, a first rib plate 44 is fixed to the outermost flange plate (which is not in butt joint with the flanges of the adjacent first H-section steel 41), the outermost flange plate is connected with the first rib plate 44 through the first bolts 43 and then is connected through welding (the bolts are used for fastening before welding, deformation caused by welding is avoided while the integrity is ensured), a groove 47 (shown in fig. 6) for enlarging the welding area is formed on the top edge and the bottom edge of the first rib plate 44, the traction rod 2 is connected with the first rib plate 44 of the rear end beam 4 through welding, a first rib plate 45 is welded between the traction rod 2 and the first rib plate 46, and the first rib plate 46 is connected with the first rib plate 46 through welding.
The traction rods 2 are vertically connected with the rear end cross beam 4 and the front end cross beam 5, the number of the traction rods 2 is 3, the traction rods 2 are sequentially distributed at intervals along the length direction of the rear end cross beam 4 and the front end cross beam 5, the traction rods 2 are arranged in parallel, the length of each traction rod 2 is N+1 times of the length of a pipeline (N represents the number of the withdrawn single pipeline, and the more than 1 times is the working space required by cutting the traction rods).
The traction rod 2 is I-steel.
The front end cross beam 5 is vertically connected with the traction rod 2, the length of the front end cross beam 5 is larger than the outer diameter of the pipe joint 1, and the ejection mechanisms at two sides of the hole can be propped against the front end cross beam 5 by the length of the front end cross beam 5.
The front end beam 5 comprises two second H-shaped steel 51, the two second H-shaped steel 51 are connected side by side in the axial direction of the pipe joint 1, namely, the long edges of the second H-shaped steel 51 are side by side, the outer surfaces of the butt joint flanges of the adjacent second H-shaped steel are overlapped, the flange plates 52 of the second H-shaped steel 51 are perpendicular to the axial direction of the pipe joint 1, the flanges of the adjacent second H-shaped steel are connected through a plurality of second bolts 53 and then welded, the outermost flange plate (which is not in butt joint with the flange plates of the adjacent second H-shaped steel) is fixedly provided with a second rib plate 54, the outermost flange plate is connected with the second rib plate 54 through a second bolt and then welded, the top edge and the bottom edge of the second rib plate 54 are provided with grooves (similar to the first rib plate) for increasing the welding area, the traction rod 2 is connected with the second rib plate of the front end beam 5, a second reinforcing plate 55 is welded between the traction rod 2 and the second rib plate, two second reinforcing plates 56 are connected between the flanges of the single second H-shaped steel, and the second reinforcing plates 56 are perpendicular to the second rib plates 56.
The push-out structure 7 is a telescopic hydraulic cylinder, the push-out structure 7 is two, are respectively positioned at two sides of the hole 6, the telescopic direction of the push-out structure is parallel to the traction rod 2, when the push-out structure stretches out, the front end cross beam 5 is far away from the hole 6, the front end cross beam 5 transmits acting force to the rear end cross beam 4 through the traction rod 2, so that the push bench is retracted towards the hole 6, when a section of pipeline completely exits from the hole 6, the traction rod 2 is cut, the traction rod 2 and the front end cross beam 5 are separated, the pipeline is withdrawn from the traction rod 2, the pipeline is lifted out of a working well, then a section of traction rod 2 (the length of the cut-out part is equal to the length of a section of pipeline) is cut off, and then the push-out structure is welded with the front end cross beam 5 again, and the push-out push bench is continued to be retracted outwards, and the operation is repeated until the whole push bench is completely retracted.
The inside crossbearer of tube coupling 1 has a plurality of bracing pieces that are used for supporting traction lever 2, and the bracing piece is the horizontality.
The length direction of the pad rail is consistent with the axial direction of the pipe joint 1.
The foregoing description of the preferred embodiments of the present utility model has been presented for purposes of illustration and not of limitation. Many variations or modifications may be made by one of ordinary skill in the art without departing from the spirit and scope of the utility model. Such changes or modifications are intended to be included within the scope of the appended claims.
Claims (10)
1. The utility model provides a push bench rollback device, a serial communication port, it includes along the pull rod (2) of pipe section (1) axial forward and backward extension, the one end of pull rod (2) is connected with rear end crossbeam (4) on separating chamber flange board (3) of cross-over connection in push bench afterbody, the other end of pull rod (2) is connected with the outside front end crossbeam (5) in entrance to a cave, two tip of front end crossbeam (5) are located the both sides in entrance to a cave (6), front end crossbeam both sides respectively with telescopic ejection structure (7) butt, the below of front end crossbeam (5) is equipped with pad rail (8) that supply front end crossbeam (5) to slide.
2. The push bench rollback device according to claim 1, characterized in that a rear end cross beam (4) is transversely bridged on a compartment flange plate (3) at the tail part of the push bench, the length of the rear end cross beam (4) is smaller than the inner diameter of the compartment flange plate (3), the rear end cross beam (4) is bridged on the lower part of the compartment flange plate (3), and the rear end cross beam (4) is in a horizontal state.
3. The push bench rollback device according to claim 1 or 2, characterized in that the rear end cross beam (4) comprises one or more first H-shaped steel (41), the plurality of first H-shaped steel (41) are connected side by side in the axial direction of the pipe joint (1), the flange plates (42) of the first H-shaped steel (41) are perpendicular to the axial direction of the pipe joint (1), the flange plates of adjacent first H-shaped steel (41) are connected through a plurality of first bolts (43) and then welded, the outermost flange plates are fixed with first stiffening plates (44), the first stiffening plates (44) are connected with the first stiffening plates (44) through the first bolts (43) and then welded, grooves for increasing the welding area are formed in the top edge and the bottom edge of the first stiffening plates (44), the traction rod (2) is connected with the first stiffening plates (45), and one or more first stiffening plates (46) are connected between the sloping plate plates of the single first H-shaped steel (41).
4. The push bench rollback device according to claim 1, wherein the traction rods (2) are vertically connected with the rear end cross beam (4) and the front end cross beam (5), the traction rods (2) are sequentially and alternately distributed along the length direction of the rear end cross beam (4) or the front end cross beam (5), and the traction rods (2) are arranged in parallel.
5. The push bench rollback apparatus according to claim 1 or 4, wherein the traction rod (2) is an i-beam, and a flange plate of the i-beam is in a horizontal state.
6. The push bench rollback device according to claim 1, characterized in that the front end cross beam (5) is vertically connected with the traction rod (2), and the length of the front end cross beam (5) is larger than the outer diameter of the pipe section (1).
7. A push bench rollback apparatus according to claim 3, wherein the front end cross member (5) comprises one or more second H-shaped steel (51), the plurality of second H-shaped steel (51) are connected side by side in the axial direction of the pipe joint (1), the flange plates (52) of the second H-shaped steel (51) are perpendicular to the axial direction of the pipe joint (1), the flange plates of adjacent second H-shaped steel are connected by a plurality of second bolts (53) and then welded, the outermost flange plate is fixed with a second rib plate (54), the second rib plate is connected with the second rib plate (54) by the second bolts and then welded, the top edge and the bottom edge of the second rib plate (54) are provided with grooves for increasing the welding area, the traction rod (2) is connected with the second rib plate facing the hole (6) of the front end cross member (5), a second reinforcing inclined plate (55) is connected between the traction rod (2) and the second rib plate, and one or more second reinforcing plates (56) are connected between the flange plates of the single second H-shaped steel.
8. The push bench rollback device according to claim 1, wherein the ejection structure (7) is a telescopic hydraulic cylinder, which is located at two sides of the hole (6) and has a telescopic direction parallel to the traction rod (2).
9. The push bench retraction device according to claim 1, wherein the tube segment (1) is internally provided with a plurality of support rods for supporting the traction rod (2).
10. The push bench retraction device according to claim 1, wherein the length direction of the pad rail is consistent with the axial direction of the pipe section (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322317778.2U CN220667558U (en) | 2023-08-29 | 2023-08-29 | Rollback device of push bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322317778.2U CN220667558U (en) | 2023-08-29 | 2023-08-29 | Rollback device of push bench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220667558U true CN220667558U (en) | 2024-03-26 |
Family
ID=90334157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322317778.2U Active CN220667558U (en) | 2023-08-29 | 2023-08-29 | Rollback device of push bench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220667558U (en) |
-
2023
- 2023-08-29 CN CN202322317778.2U patent/CN220667558U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107575239B (en) | Movable shield launching device for narrow space | |
| CN108868834B (en) | Temporary support device for tunnel arch wall primary support intrusion limit arch changing construction | |
| CN113202518A (en) | Assembled corrugated steel-filling layer composite tunnel supporting system and construction method thereof | |
| CN220667558U (en) | Rollback device of push bench | |
| CN111622764B (en) | Shield tunneling machine and station passing method thereof | |
| CN212479300U (en) | Tunneling working face circulating support combined support | |
| CN110080787B (en) | Construction method for in-station stacked shield station-crossing structural type of underground excavation station | |
| CN111946368A (en) | Creeping type hydraulic supporting device used for removing underground excavation channel and station duct piece of shield tunnel vehicle | |
| CN210829275U (en) | Shield constructs to originate and uses counterforce frame subassembly | |
| CN210919126U (en) | Tunnel preliminary bracing arch-changing supporting structure | |
| CN110513118B (en) | Shield non-negative ring originating structure and originating process | |
| CN214611107U (en) | Novel prefabricated gallows that can make up dismantlement | |
| CN210829276U (en) | Shield does not have burden ring and begins structure | |
| CN210977480U (en) | Double-split originating station structure of small-clear-distance double-line tunnel shield | |
| CN215256192U (en) | Movable shield supporting structure with detachable shield segment cavity | |
| CN210829277U (en) | Steel ring structure for shield launching | |
| CN207598247U (en) | It excavates with operation stand arrangement narrow-bore tunnel | |
| CN114250807A (en) | Lifting corridor platform, prefabricated pipe corridor assembly system and prefabricated pipe corridor construction process | |
| CN113309533B (en) | Open TBM expanding excavation head-planting-preventing method | |
| CN110566216A (en) | steel ring structure for shield launching | |
| CN111561067A (en) | Removable power consumption beam section of sliding friction's disconnect-type | |
| CN220645967U (en) | Round support frame is protected to subway tunnel segment | |
| CN110500106B (en) | Reaction frame assembly for shield launching | |
| CN211313307U (en) | Foldable scaffold arranged behind shield | |
| CN216950365U (en) | Self-propelled excavation trolley for tunnel micro-step method construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |