Pipe jacking working well steel structure supporting device

Abstract

The utility model discloses a pipe jacking working well steel structure supporting device, which belongs to the field of well mouth construction, and comprises a plurality of supporting plates vertically arranged along the circumferential direction of the inner side wall of a working well, a vertical rod arranged at the center of the working well, and an abutting piece arranged on the vertical rod and used for abutting and reinforcing the plurality of supporting plates, a pipe passing hole matched with a pipe passing channel in the side wall of the working well is formed in the supporting plate, and a hole supporting mechanism matched with the pipe passing hole is arranged on the supporting plate. According to the supporting device, the arc-shaped jacking pieces are jacked up through the adjusting pieces to be attached to the hole wall of the pipe passing hole, so that the pipe passing hole is supported and protected, and compared with an existing mode that only the inner wall of a well body is supported, the supporting device can enable the inner wall base body of the pipe passing hole not to be damaged even if a pipeline opening is frequently touched in the conveying process of a pipeline; large-area collapse cannot be caused, and safety and stability are higher.

Description

Technical Field

[0001] The utility model relates to the field of wellhead construction, in particular to a steel structure supporting device for a jacking pipe working well. Background Art

[0002] Pit top construction is a non-excavation pipeline laying construction technology, mainly used for laying pipelines through obstacles that need to be crossed. A working pit is dug downward from one side of the obstacle, and a perforation is opened on the inner wall of the working pit. The top pipe is pushed into the perforation by mechanical or manual means at the top of the working pit, and the top pipe is received by another working pit on the other side of the obstacle. The working pit needs temporary support to prevent the wall of the working pit from collapsing.

[0003] The Chinese utility model patent with publication number CN212428823U discloses a temporary support structure for a pipe jacking working shaft. Through the combination of support plates and arc plates, the wellhead support is transformed from a casting method to a detachable prefabricated method. This method has good flexibility, short construction period, and is convenient and quick to use. However, when it is implemented, it only focuses on supporting the inner wall of the well body. In the actual pipe penetration process, since the pipe penetration opening is excavated longitudinally and transversely, the support at the pipe penetration opening is relatively weak. In the process of conveying the pipeline, it is easy to damage the matrix at the pipe penetration hole, resulting in collapse, which may cause large-scale collapse of the well wall, and there are still certain safety hazards.

[0004] Therefore, a steel structure supporting device for a pipe jacking working shaft is provided to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a steel structure support device for a jacking pipe working shaft, aiming to solve the problem that the existing support device proposed in the background technology only focuses on supporting the inner wall of the shaft body. In the actual pipe threading process, since the pipe threading opening is excavated longitudinally and transversely, the support at the pipe threading opening is relatively weak. In the process of conveying the pipeline, it is easy to cause damage to the matrix at the pipe threading hole, thereby causing collapse, and further may cause large-scale collapse of the shaft wall, and there are still certain safety hazards.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a steel structure support device for a top pipe working shaft, comprising a plurality of support plates vertically arranged along the circumference of the inner wall of the working shaft, a vertical rod arranged in the center of the working shaft, and a fastening member arranged on the vertical rod for abutting and reinforcing the plurality of support plates, wherein the support plate is provided with a pipe hole adapted to the pipe passage on the side wall of the working shaft, and a hole support mechanism adapted to the pipe hole is provided on the support plate:

[0007] In order to protect the through-hole for inserting the pipeline, the hole support mechanism includes a guard plate fitted on the outside of the support plate, an entry hole matching the through-hole is opened at the center of the guard plate, a guide tube connected with the entry hole and inserted into the through-hole through the through-hole in the pipe passage on the side wall of the working well is fixedly installed on the outer wall of the guard plate, at least three arc-shaped top plates supported by adjusting parts are arranged in a circular array on the outer wall of the guide tube, and the inner wall of the working well is inserted through a number of support plates spliced ​​end to end to support the excavated well wall, and then The supporting plate is butted against the fastening piece on the vertical rod, thereby pressing the supporting plate against the well wall to ensure the stability of the well wall structure, and then the guide tube is inserted into the pipe hole to make the guard plate fit the outer wall of the support plate, and then the arc-shaped top plate is lifted up by the adjusting piece to make it fit the hole wall of the pipe hole, thereby supporting and protecting the pipe hole. Compared with the existing support that only supports the inner wall of the well body, this device can prevent the inner wall matrix of the pipe hole from being damaged even if the pipe mouth is frequently touched during transportation, and will not cause large-scale collapse, so it is safer and more stable.

[0008] Preferably, in order to operate the adjusting member to adjust the arc top sheet, the adjusting member includes a lifting slot provided on the outer wall of the guide tube, a two-way screw rod is movably installed in the lifting slot, one end of the two-way screw rod passes through the guard plate and a knob is fixedly installed at the end head, and two opposing trapezoidal sliding blocks are screwed on the outer wall of the two-way screw rod, and a lifting block fixedly connected to the bottom of the arc top sheet and having a V-shaped bottom that is adapted to the inclined surfaces of the two trapezoidal sliding blocks is movably installed in the lifting slot,

[0009] Preferably, in order to prevent the lifting block from falling out of the lifting slot, an anti-slip ring is fixedly installed on the outer wall of the lifting block, and the outer wall contour of the anti-slip ring is adapted to the inner wall of the lifting slot. A retaining ring adapted to the anti-slip ring is fixedly installed on the top of the lifting slot. The retaining ring blocks the anti-slip ring so that the lifting block is always located in the lifting slot to prevent accidental slipping out and to be more stable.

[0010] Preferably, in order to make the contact between the arc-shaped top sheet and the inside of the tube hole more stable, a plurality of convex strips are fixedly installed on the outer wall of the arc-shaped top sheet, and the convex strips make the arc-shaped top sheet slightly penetrate into the inner wall of the tube hole when in contact, thereby improving stability.

[0011] Preferably, in order to further improve the structural stability, the supporting device also includes a pushing mechanism arranged between the support plate and the vertical rod for supporting the guard plate, the pushing mechanism includes two clamping grooves opened on the outer side walls of the guard plate, and clamping plates are slidably installed in the two clamping grooves, and a top plate is hinged on one end of the two clamping plates away from the clamping grooves, and a screw is fixedly installed at the center position on the outer wall of the top plate away from the clamping plate, and a screw tube is screwed on the outer wall of the screw, and a connecting rod is rotatably installed on one end of the screw tube away from the screw, and a semicircular top ring adapted for the outer side wall of the vertical rod is fixedly installed on the other end of the connecting rod away from the screw tube. By clamping the clamping plate into the two clamping grooves on the guard plate, and then aligning the semicircular top ring with the side wall of the vertical rod, the screw tube is rotated so that the screw tube rotates on the screw, increasing the distance between the screw tube and the top plate, thereby causing the semicircular top ring to gradually contact the vertical rod until it is tightened, so that the two clamping plates press the guard plate tightly, further ensuring that the guard plate abuts against the support plate, which is stable and reliable.

[0012] Preferably, in order to facilitate the rotation of the screw tube, a rotating sleeve is fixedly installed on the outer wall of the screw tube, and the surface of the rotating sleeve is a structure adapted to a wrench, so that workers can rotate the screw tube by hand or with tools, which is convenient and quick.

[0013] Compared with the prior art, the advantages of the utility model are: the support device, through a plurality of support plates spliced ​​end to end, is inserted into the inner wall of the working well to support the excavated well wall, and then the support plate is abutted by the fastening piece on the vertical rod, so that the support plate is pressed against the well wall to ensure the stability of the well wall structure, and then the guide pipe is inserted into the pipe hole so that the guard plate fits the outer wall of the support plate, and then the arc-shaped top plate is lifted up by the adjusting piece so that it fits the hole wall of the pipe hole, thereby supporting and protecting the pipe hole. Compared with the existing support for only the inner wall of the well body, the present device can prevent the inner wall matrix of the pipe hole from being damaged even if the pipe mouth is frequently touched during transportation, and will not cause large-scale collapse, and is safer and more stable.

[0014] The supporting device inserts a clamping plate into two clamping grooves on the guard plate, then aligns the semicircular top ring with the side wall of the vertical rod, and then rotates the screw tube so that the screw tube rotates on the screw rod, increasing the distance between the screw tube and the top plate, so that the semicircular top ring gradually contacts the vertical rod until it is tightened, thereby making the two clamping plates press against the guard plate, further ensuring that the guard plate abuts against the support plate, which is stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a steel structure support device for a jacking working shaft;

[0016] Figure 2 It is a schematic diagram of the hole support mechanism and jacking mechanism structure of a steel structure support device for a jacking working shaft;

[0017] Figure 3 It is a schematic diagram of the structure of an adjusting member of a steel structure support device for a jacking working shaft;

[0018] Figure 4 for Figure 3 Enlarged schematic diagram at point A in the middle.

[0019] In the figure: 1. working well; 2. support plate; 3. vertical rod; 4. fastening member; 5. pipe hole; 6. hole support mechanism; 61. guard plate; 62. entry hole; 63. guide tube; 64. adjustment member; 641. lifting groove; 642. two-way screw rod; 643. knob; 644. trapezoidal slider; 645. lifting block; 646. anti-slip ring; 647. retaining ring; 65. arc-shaped top plate; 66. convex strip; 7. pushing mechanism; 71. slot; 72. clamping plate; 73. top plate; 74. screw rod; 75. screw tube; 76. connecting rod; 77. semicircular top ring; 78. rotating sleeve. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example 1

[0022] This embodiment provides a steel structure support device for a jacking working pit, such as Figure 1-4 As shown, the support device includes a plurality of support plates 2 vertically arranged along the circumference of the inner wall of the working well 1, a vertical rod 3 arranged at the center of the working well 1, and a fastening member 4 arranged on the vertical rod 3 for abutting and reinforcing the plurality of support plates 2. The support plates 2 are provided with pipe holes 5 adapted to the pipe passages on the side walls of the working well 1, and the support plates 2 are provided with hole support mechanisms 6 adapted to the pipe holes 5:

[0023] The hole support mechanism 6 includes a guard plate 61 which is fitted on the outside of the support plate 2. An entry hole 62 which is compatible with the pipe hole 5 is opened at the center of the guard plate 61. A guide tube 63 which is connected with the entry hole 62 and inserted into the pipe passage of the side wall of the working well 1 through the pipe hole 5 is fixedly installed on the outer wall of the guard plate 61. At least three arc-shaped top plates 65 supported by an adjusting member 64 are arranged in a circular array on the outer wall of the guide tube 63.

[0024] When in use, several support plates 2 spliced ​​end to end are inserted into the inner wall of the working well 1 to support the excavated well wall, and then the support plate 2 is abutted by the fastening piece 4 on the vertical rod 3, so that the support plate 2 is pressed against the well wall to ensure the stability of the well wall structure, and then the guide tube 63 is inserted into the pipe hole 5, so that the guard plate 61 fits the outer wall of the support plate 2, and then the arc-shaped top plate 65 is lifted up by the adjusting piece 64 so that it fits the hole wall of the pipe hole 5, thereby supporting and protecting the pipe hole 5. Compared with the existing support for only the inner wall of the well body, this device can prevent the inner wall matrix of the pipe hole 5 from being damaged even if the pipe mouth is frequently touched during transportation, and will not cause large-scale collapse, which is safer and more stable.

[0025] Among them, the adjustment member 64 includes a lifting groove 641 opened on the outer wall of the guide tube 63, and a two-way screw rod 642 is movably installed inside the lifting groove 641. One end of the two-way screw rod 642 passes through the guard plate 61 and a knob 643 is fixedly installed at the end. Two opposing trapezoidal sliders 644 are screwed on the outer wall of the two-way screw rod 642. A lifting block 645 is movably installed in the lifting groove 641, which is fixedly connected to the bottom of the arc-shaped top plate 65 and has a V-shaped bottom that is compatible with the inclined surfaces of the two trapezoidal sliders 644. When in use, the two-way screw rod 642 is rotated by the knob 643, thereby driving the two trapezoidal sliders 644 to move toward each other, thereby pushing the lifting block 645 of the V-shaped bottom to move upward through the inclined surfaces of the two trapezoidal sliders 644, thereby lifting the arc-shaped top plate 65 and supporting the inner wall of the through-tube hole 5. When the guide tube 63 needs to be taken out, the knob 643 is rotated in the opposite direction to drive the two-way screw rod 642 to reverse, thereby causing the two trapezoidal sliders 644 to move in opposite directions, thereby causing the inclined surfaces of the two trapezoidal sliders 644 to separate from the center of the lifting block 645 of the V-shaped bottom, so that the lifting block 645 drives the arc-shaped top plate 65 to move downward, releasing the contact with the through-tube hole 5, and taking it out conveniently and quickly.

[0026] Furthermore, an anti-slip ring 646 is fixedly installed on the outer wall of the lifting block 645, and the outer wall profile of the anti-slip ring 646 is adapted to the inner wall of the lifting groove 641. A retaining ring 647 adapted to the anti-slip ring 646 is fixedly installed on the top of the lifting groove 641. When in use, the retaining ring 647 blocks the anti-slip ring 646 so that the lifting block 645 is always located in the lifting groove 641, preventing accidental slipping, and being more stable.

[0027] Furthermore, a plurality of convex strips 66 are fixedly mounted on the outer sidewall of the arc-shaped top sheet 65. During use, the arc-shaped top sheet 65 slightly extends into the inner wall of the tube hole 5 when contacted by the convex strips 66, thereby improving stability.

[0028] Example 2

[0029] Different from Example 1, Figure 1 and Figure 2As shown, the supporting device also includes a pushing mechanism 7 arranged between the supporting plate 2 and the vertical rod 3 for supporting the guard plate 61, and the pushing mechanism 7 includes two opposite slots 71 opened on the outer wall of the guard plate 61, and a clamping plate 72 is slidably installed in the two slots 71, and a top plate 73 is hinged on one end of the two clamping plates 72 away from the slots 71, and a screw rod 74 is fixedly installed at the center position of the outer wall of the top plate 73 away from the clamping plate 72, and a screw tube 75 is screwed on the outer wall of the screw rod 74, and a connecting rod 76 is rotatably installed on the end of the screw tube 75 away from the screw 74, and a semicircular top ring 77 adapted to the outer wall of the vertical rod 3 is fixedly installed on the end of the connecting rod 76 away from the screw tube 75.

[0030] When in use, the card plate 72 is inserted into the two card slots 71 on the guard plate 61, and then the semicircular top ring 77 is aligned with the side wall of the vertical rod 3, and then the screw tube 75 is rotated to make the screw tube 75 rotate on the screw rod 74, thereby increasing the distance between the screw tube 75 and the top plate 73, so that the semicircular top ring 77 gradually contacts the vertical rod 3 until it is tightened, thereby making the two card plates 72 press the guard plate 61 tightly, further ensuring that the guard plate 61 abuts against the support plate 2, which is stable and reliable.

[0031] Further, a rotating sleeve 78 is fixedly mounted on the outer wall of the screw tube 75. When in use, the surface of the rotating sleeve 78 is adapted to a wrench structure, which is convenient for workers to rotate the screw tube 75 by hand or tool, and the wrench is sleeved on the outer wall of the rotating sleeve 78 to rotate it, which is convenient and quick.

[0032] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A steel structure support device for a top pipe working shaft, comprising a plurality of support plates (2) vertically arranged along the circumference of the inner side wall of the working shaft (1), a vertical rod (3) arranged at the center of the working shaft (1), and a fastening member (4) arranged on the vertical rod (3) for abutting and reinforcing the plurality of support plates (2), wherein the support plates (2) are provided with pipe holes (5) adapted to the pipe passages on the side walls of the working shaft (1), and the support plates (2) are provided with hole support mechanisms (6) adapted to the pipe holes (5), characterized in that: The hole support mechanism (6) comprises a guard plate (61) fitted on the outside of the support plate (2), an entry hole (62) matching the pipe hole (5) is opened at the center of the guard plate (61), a guide tube (63) connected with the entry hole (62) and inserted into the pipe passage of the side wall of the working well (1) through the pipe hole (5) is fixedly installed on the outer wall of the guard plate (61), and at least three arc-shaped top plates (65) supported by adjusting members (64) are arranged in a circumferential array on the outer wall of the guide tube (63).

2. A steel structure support device for a pipe jacking pit according to claim 1, characterized in that: The adjusting member (64) comprises a lifting groove (641) provided on the outer wall of the guide tube (63), a bidirectional screw rod (642) being movably installed inside the lifting groove (641), one end of the bidirectional screw rod (642) passing through the guard plate (61) and a knob (643) being fixedly installed at the end, two opposed trapezoidal sliders (644) being screwed on the outer wall of the bidirectional screw rod (642), and a lifting block (645) being fixedly connected to the bottom of the arc-shaped top plate (65) and having a V-shaped bottom adapted to the inclined surfaces of the two trapezoidal sliders (644) being movably installed inside the lifting groove (641).

3. A steel structure support device for a jacking pit according to claim 2, characterized in that: An anti-slip ring (646) is fixedly installed on the outer wall of the lifting block (645), and the outer wall profile of the anti-slip ring (646) is compatible with the inner wall of the lifting groove (641). A retaining ring (647) compatible with the anti-slip ring (646) is fixedly installed on the top of the lifting groove (641).

4. A steel structure support device for a pipe jacking pit according to claim 3, characterized in that: A plurality of convex strips (66) are fixedly mounted on the outer side wall of the arc-shaped top sheet (65).

5. The steel structure support device for a pipe jacking pit according to claim 1, characterized in that: The support device also includes a pushing mechanism (7) arranged between the support plate (2) and the vertical rod (3) for supporting the guard plate (61), the pushing mechanism (7) including two opposite clamping grooves (71) provided on the outer side wall of the guard plate (61), clamping plates (72) being slidably mounted in the two clamping grooves (71), a top plate (73) being hingedly mounted at one end of the two clamping plates (72) away from the clamping grooves (71), a screw rod (74) being fixedly mounted at a central position on the outer wall of the top plate (73) away from the clamping plate (72), a screw tube (75) being screwed on the outer side wall of the screw rod (74), a connecting rod (76) being rotatably mounted on one end of the screw tube (75) away from the screw rod (74), and a semicircular top ring (77) matching the outer side wall of the vertical rod (3) being fixedly mounted at one end of the connecting rod (76) away from the screw tube (75).

6. A steel structure support device for a jacking pit according to claim 5, characterized in that: A rotating sleeve (78) is fixedly mounted on the outer side wall of the spiral tube (75).

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