Pipe jacking equipment and pipe jacking construction method

Abstract

The invention discloses pipe jacking equipment and a pipe jacking construction method.The pipe jacking equipment comprises a bottom plate, a moving plate and a driving mechanism, a hydraulic cylinder is installed at the top of the moving plate, a piston rod of the hydraulic cylinder is fixedly connected with a push plate, one end of the hydraulic cylinder is fixedly connected with an abutting plate, and the abutting plate is fixedly connected with a push rod of the hydraulic cylinder; the abutting plate abuts against one side of the pit slot; a positioning device is mounted at one end of the movable plate; the positioning device comprises a transverse plate fixedly connected to the end, away from the abutting plate, of the movable plate, two vertical plates fixedly connected to the two sides of the top of the transverse plate correspondingly, two strip-shaped holes formed in the transverse plate, two guide rods fixedly connected to the inner walls of the two strip-shaped holes correspondingly, and two clamping plates slidably connected to the two guide rods correspondingly. A first inclined face is arranged on the side, close to the pipeline, of each clamping plate, a clamping spring is fixedly connected to the side, away from the pipeline, of each clamping plate, and the end, away from the corresponding clamping plate, of each clamping spring is fixedly connected to one side of the corresponding vertical plate. The pipeline jacking device is convenient for jacking a pipeline.

Description

Technical Field

[0001] This application relates to the technical field of trenchless pipeline construction, and in particular to a pipe jacking device and a pipe jacking construction method. Background Technology

[0002] Currently, pipe jacking technology is a trenchless pipeline laying technology used in municipal construction. It uses hydraulic propulsion to push a rotating excavator head into the geological strata. The excavator head breaks up the soil and rock and discharges it backward, simultaneously forming a tunnel. As the excavator head advances, hoisting equipment lowers prefabricated pipes onto guide rails. The pipe jacking equipment then pushes the prefabricated pipes forward along the guide rails. The pipes support the tunnel walls while propelling the excavator head forward. As the number of prefabricated pipes increases, the distance the excavator head can travel also increases. In existing technologies, a pit is typically dug first to house the pipe jacking equipment.

[0003] For related technology, please refer to Chinese Utility Model Patent No. CN210033434U, which discloses a hydraulic pipe jacking device, including a base plate, multiple supporting power devices, a support body, a pipe jacking device, and a moving device; the multiple supporting power devices support the support body; the moving device drives the pipe jacking device to move along the support body; a support slide rail is provided at the upper end of the support body; the pipe jacking device moves along the support slide rail; a rack is installed at the upper end of the support body; the moving device is provided with a moving gear embedded in the rack; the rack and the moving gear cooperate to drive the pipe jacking device to move.

[0004] However, the aforementioned pipe jacking equipment makes it inconvenient to position the pipe, thus hindering the jacking of the pipe. Summary of the Invention

[0005] This application provides a pipe jacking device to facilitate the jacking of pipelines, and adopts the following technical solution:

[0006] A pipe jacking device includes a base plate, a movable plate slidably connected to the top of the base plate, and a drive mechanism mounted on the base plate for moving the movable plate. A hydraulic cylinder is mounted on the top of the movable plate, a push plate is fixedly connected to the piston rod of the hydraulic cylinder, and an abutment plate is fixedly connected to the end of the hydraulic cylinder away from the push plate, the abutment plate abutting against one side of a pit. A positioning device for positioning the pipe is mounted on the end of the movable plate away from the abutment plate. The positioning device includes a horizontal plate fixedly connected to the end of the movable plate away from the abutment plate, two vertical plates respectively fixedly connected to the top two sides of the horizontal plate, two slotted holes opened on the horizontal plate, two guide rods respectively fixedly connected to the inner walls of the two slotted holes, and two clamping plates respectively slidably connected to the two guide rods. Each clamping plate has a first inclined surface on the side near the pipe, and a clamping spring is fixedly connected to the side of each clamping plate away from the pipe, the end of the clamping spring away from the clamping plate being fixedly connected to one side of the vertical plate.

[0007] By adopting the above scheme, the pipe is first placed between the two clamping plates. At this time, the pipe drives the clamping plates to move away from the pipe under the action of the first inclined plane. The movement of the clamping plates away from the pipe presses against the clamping spring. After the pipe is placed between the two clamping plates, the clamping plates clamp the pipe under the action of the clamping spring, thus positioning the pipe. When it is necessary to push the pipe forward, the hydraulic cylinder is first activated. Then, the piston rod of the hydraulic cylinder drives the push plate to move, and the movement of the push plate can push the pipe forward. In summary, the positioning device facilitates the positioning of the pipe, thus facilitating the pushing of the pipe.

[0008] Preferably, the drive mechanism includes a drive motor mounted on the top of the base plate and a lead screw fixed to the output shaft of the drive motor; the moving plate is threadedly connected to the lead screw.

[0009] By adopting the above scheme, when it is necessary to drive the moving plate to move, the drive motor is started first. At this time, the output shaft of the drive motor drives the lead screw to rotate, and the rotation of the lead screw can drive the moving plate to move. In summary, the drive mechanism is designed to facilitate the movement of the moving plate.

[0010] Preferably, sleeves are fixedly connected to both ends of the top of the base plate, and vertical rods are fixedly connected to both ends of the bottom of the movable plate. The two vertical rods slide vertically and are connected to the inner cavities of the two sleeves.

[0011] By adopting the above scheme, the vertical rods and sleeves facilitate the guidance of the moving plate.

[0012] Preferably, the horizontal plate is equipped with a disengagement mechanism for separating the two clamping plates from the pipe. The disengagement mechanism includes a through hole in the horizontal plate, a drive plate that slides vertically through the through hole, and a first reset component installed on one side of the through hole for resetting the drive plate. The top of the drive plate is provided with a spherical surface that matches the bottom of the push plate. Two rotating blocks are hinged to the bottom of the horizontal plate, and one corner of each of the two rotating blocks is hinged to the opposite inner side of the two clamping plates. First push blocks are fixed to both sides of the drive plate, and receiving blocks are fixed to the side of each of the two rotating blocks away from the clamping plates. The two first push blocks abut against the two receiving blocks.

[0013] By adopting the above scheme, the hydraulic cylinder is first activated, and then the piston rod of the hydraulic cylinder drives the push plate to move closer to the pipeline. Next, the push plate, under the action of the spherical surface, drives the drive plate to move downward. The downward movement of the drive plate drives the two first push blocks to move downward. The downward movement of the two first push blocks drives the two receiving blocks to rotate, and the rotation of the two receiving blocks drives the two rotating blocks to rotate. The rotation of the two rotating blocks drives the two clamping plates to move away from the pipeline. This can reduce the friction between the pipeline and the clamping plates. In addition, because the piston rod of the hydraulic cylinder moves relatively fast, when the clamping plates separate from the pipeline, the push plate immediately pushes the pipeline into the tunnel. In summary, the designed separation mechanism facilitates the separation of the pipeline from the clamping plates, thereby reducing the friction between the pipeline and the clamping plates.

[0014] Preferably, the first reset assembly includes a vertical groove formed on one side of the through hole, a first vertical block that slides vertically and is connected to the vertical groove, and a first reset spring fixed to the bottom of the first vertical block; the first vertical block is fixed to one side of the drive plate, and the end of the first reset spring away from the first vertical block is fixed to the bottom of the vertical groove.

[0015] By adopting the above scheme, the push plate drives the drive plate to move downward under the action of the spherical surface. The downward movement of the drive plate causes the first vertical block to move downward, and the downward movement of the first vertical block presses against the first reset spring. When the push plate separates from the drive plate, the first vertical block drives the drive plate to reset under the action of the first reset spring. In summary, the first reset component facilitates the reset of the drive plate.

[0016] Preferably, a limiting mechanism for limiting the drive plate is installed on the side of the through hole away from the vertical groove.

[0017] By adopting the above scheme, the limiting mechanism can be set to limit the drive plate, thus preventing the clamping plate from resetting due to the drive plate resetting upward when the push plate is pushing into the pipe.

[0018] Preferably, the limiting mechanism includes a horizontal groove formed on the side of the through hole away from the vertical groove, a dovetail groove formed on one side of the horizontal groove, a dovetail block slidably connected to the dovetail groove, and a second return spring fixed to one side of the dovetail groove; the end of the second return spring away from the dovetail block is fixed to the inner wall of the dovetail groove away from the through hole; a limiting plate is fixed to the bottom of the dovetail block, and a second push block is fixed to the side of the drive plate near the limiting plate; a second inclined surface is provided on the end of the limiting plate near the second push block, and the second inclined surface matches the side wall of the second push block; a pushing component for separating the limiting plate from the second push block is installed in the horizontal groove.

[0019] By adopting the above scheme, the drive plate moves downward, causing the second push block to move downward. Then, under the action of the second inclined surface, the second push block drives the limiting plate to move away from the drive plate. The movement of the limiting plate away from the drive plate causes the dovetail block to move away from the drive plate. The movement of the dovetail block away from the drive plate presses against the second return spring. When the second push block moves below the limiting plate, the dovetail block drives the limiting plate to reset under the action of the second return spring, thereby preventing the second push block from moving upward and thus preventing the drive plate from moving upward. In summary, the limiting mechanism facilitates the limiting of the drive plate.

[0020] Preferably, the pushing assembly includes an electric push rod installed on the inner wall of the horizontal groove and a second vertical block fixed to the output end of the electric push rod. A third vertical block is fixed to the bottom of the limiting plate, and the second vertical block abuts against the side of the third vertical block near the drive plate.

[0021] By adopting the above scheme, when it is necessary to release the limit on the drive plate, the electric push rod is first activated. At this time, the output end of the electric push rod drives the second vertical block to move away from the drive plate. The movement of the second vertical block away from the drive plate drives the third vertical block to move away from the drive plate. The movement of the third vertical block away from the drive plate drives the limiting plate to move away from the drive plate. The movement of the limiting plate away from the drive plate can release the limit on the second push block, and thus release the limit on the drive plate. Then, the limiting plate can be reset under the action of the first reset spring. In summary, the push assembly is designed to facilitate the release of the limit on the drive plate.

[0022] Preferably, a support mechanism for supporting the horizontal plate is installed at the bottom of the horizontal plate. The support mechanism includes a bracket fixed to the bottom of the horizontal plate, a support rod slidably connected to the bracket in a vertical direction, a horizontal plate fixed to the top of the support rod, and a support plate fixed to the bottom of the support rod. A plurality of support springs are provided between the horizontal plate and the bracket, and the two ends of each support spring are respectively fixed to the opposite inner sides of the horizontal plate and the bracket.

[0023] By adopting the above scheme, the drive plate moves downward, which in turn drives the horizontal plate to move downward; the horizontal plate moves downward, which in turn drives the support rod to move downward; and the support rod moves downward, which in turn drives the support plate to move downward. This facilitates the support of the horizontal plate, and thus facilitates the support of the moving plate. In summary, the designed support mechanism facilitates the support of the moving plate.

[0024] This application provides a pipe jacking construction method using a pipe jacking equipment, which adopts the following technical solution:

[0025] A pipe jacking construction method using a pipe jacking device includes the following steps:

[0026] The pipe is placed between two clamping plates. Under the action of the first inclined plane, the pipe drives the clamping plates to move away from the pipe, pressing against the clamping springs. Once the pipe is positioned, the clamping plates clamp the pipe under the action of the clamping springs, thus positioning the pipe. When the pipe needs to be pushed forward, the hydraulic cylinder is activated. The piston rod of the hydraulic cylinder drives the push plate to move. The push plate, under the action of the spherical surface, drives the drive plate downward. The downward movement of the drive plate causes the two first push blocks to move downward. The downward movement of the two first push blocks drives the two receiving blocks to rotate. The rotation of the two receiving blocks drives the two rotating blocks to rotate. The rotation of the two rotating blocks drives the two clamping plates to move away from the pipe. Finally, the push plate pushes the pipe into the tunnel. Furthermore... The downward movement of the drive plate causes the second push block to move downward. Then, under the action of the second inclined plane, the second push block drives the limiting plate to move away from the drive plate. The movement of the limiting plate away from the drive plate causes the dovetail block to move away from the drive plate. The movement of the dovetail block away from the drive plate presses against the second return spring. When the second push block moves below the limiting plate, the dovetail block drives the limiting plate to reset under the action of the second return spring, thereby preventing the second push block from moving upward and thus preventing the drive plate from moving upward, which facilitates the push plate driving the pipe forward. Furthermore, the downward movement of the drive plate drives the horizontal plate to move downward, the downward movement of the horizontal plate drives the support rod to move downward, and the downward movement of the support rod drives the support plate to move downward, which facilitates the support of the horizontal plate and thus the support of the moving plate.

[0027] In summary, this application has the following beneficial effects:

[0028] 1. First, place the pipe between the two clamping plates. The pipe, under the action of the first inclined plane, drives the clamping plates to move away from the pipe, pressing against the clamping springs. Once the pipe is positioned between the two clamping plates, the clamping plates clamp the pipe under the action of the clamping springs, thus positioning the pipe. When it is necessary to push the pipe forward, first activate the hydraulic cylinder. Then, the piston rod of the hydraulic cylinder drives the push plate to move, which pushes the pipe forward. In summary, the positioning device facilitates pipe positioning, thus facilitating pipe pushing.

[0029] 2. First, the hydraulic cylinder is activated. Then, the piston rod of the hydraulic cylinder drives the push plate to move closer to the pipeline. Next, the push plate, under the action of the spherical surface, drives the drive plate to move downward. The downward movement of the drive plate causes the two first push blocks to move downward. The downward movement of the two first push blocks drives the two receiving blocks to rotate. The rotation of the two receiving blocks drives the two rotating blocks to rotate. The rotation of the two rotating blocks drives the two clamping plates to move away from the pipeline. This reduces the friction between the pipeline and the clamping plates. In addition, because the piston rod of the hydraulic cylinder moves relatively fast, when the clamping plates separate from the pipeline, the push plate immediately pushes the pipeline into the tunnel. In summary, the designed separation mechanism facilitates the separation of the pipeline from the clamping plates, thereby reducing the friction between the pipeline and the clamping plates.

[0030] 3. The downward movement of the drive plate causes the second push block to move downward. Then, under the action of the second inclined plane, the second push block drives the limiting plate to move away from the drive plate. The movement of the limiting plate away from the drive plate causes the dovetail block to move away from the drive plate. The movement of the dovetail block away from the drive plate presses against the second return spring. When the second push block moves below the limiting plate, the dovetail block drives the limiting plate to reset under the action of the second return spring, thereby preventing the second push block from moving upward and thus preventing the drive plate from moving upward. In summary, the limiting mechanism facilitates the limiting of the drive plate. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0032] Figure 2 This is a schematic diagram highlighting the positioning device in the embodiments of this application;

[0033] Figure 3 This is a schematic diagram highlighting the limiting mechanism in the embodiments of this application.

[0034] Explanation of reference numerals in the attached drawings: 1. Pit; 2. Pipe; 3. Base plate; 31. Moving plate; 32. Hydraulic cylinder; 33. Push plate; 34. Abutting plate; 4. Drive mechanism; 41. Drive motor; 42. Lead screw; 43. Sleeve; 44. Vertical rod; 5. Positioning device; 51. Horizontal plate; 511. Strip hole; 52. Vertical plate; 53. Guide rod; 54. Clamping plate; 541. First inclined plane; 55. Clamping spring; 6. Disengagement mechanism; 61. Through hole; 62. Drive plate; 621. Spherical surface; 63. Rotating block; 64. First push block; 6 5. Receiving block; 66. First reset assembly; 661. Vertical groove; 662. First vertical block; 663. First reset spring; 7. Limiting mechanism; 71. Horizontal groove; 72. Dovetail groove; 73. Dovetail block; 731. Second reset spring; 74. Limiting plate; 741. Second inclined surface; 75. Second push block; 76. Pushing assembly; 761. Electric push rod; 762. Second vertical block; 763. Third vertical block; 8. Supporting mechanism; 81. Bracket; 82. Support rod; 83. Horizontal plate; 84. Support plate; 85. Support spring. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0036] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," "lower," "bottom," and "top" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific part, respectively.

[0037] This application discloses a pipe jacking device, such as... Figure 1 As shown, it includes a base plate 3, a movable plate 31 that slides vertically to the top of the base plate 3, and a drive mechanism 4 mounted on the base plate 3 for driving the movable plate 31 to move.

[0038] like Figure 1 and Figure 2As shown, a hydraulic cylinder 32 is horizontally mounted on the top of the movable plate 31. A push plate 33 is fixedly connected to the piston rod of the hydraulic cylinder 32. An abutment plate 34 is fixedly connected to the end of the hydraulic cylinder 32 away from the push plate 33, and the abutment plate 34 abuts against one side of the pit 1. A positioning device 5 for positioning the pipe 2 is installed at the end of the movable plate 31 away from the abutment plate 34. The positioning device 5 includes a horizontal plate 51 fixed to the end of the movable plate 31 away from the abutment plate 34, two vertical plates 52 fixed to the front and rear sides of the top of the horizontal plate 51 respectively, and two [unclear text - possibly related to a device or mechanism] cut on the horizontal plate 51. The system includes a strip hole 511, two guide rods 53 fixed to the inner walls of the two strip holes 511, and two clamping plates 54 slidably connected to the two guide rods 53 along the width direction of the horizontal plate 51. The two guide rods 53 are respectively installed through the two clamping plates 54. Each clamping plate 54 has a first inclined surface 541 on the side near the pipe 2. Each clamping plate 54 has multiple clamping springs 55 fixed on the side away from the pipe 2. The clamping springs 55 are installed along the width direction of the horizontal plate 51. The end of the clamping spring 55 away from the clamping plate 54 is fixed to the side of the vertical plate 52. First, the pipe 2 is placed between the two clamping plates 54. At this time, under the action of the first inclined plane 541, the pipe 2 drives the clamping plates 54 to move away from the pipe 2. The movement of the clamping plates 54 away from the pipe 2 presses against the clamping spring 55. After the pipe 2 is placed between the two clamping plates 54, the clamping plates 54 clamp the pipe 2 under the action of the clamping spring 55, thereby positioning the pipe 2. When it is necessary to push the pipe 2 forward, the hydraulic cylinder 32 is activated first. Then, the piston rod of the hydraulic cylinder 32 drives the push plate 33 to move. The movement of the push plate 33 can push the pipe 2 forward. In summary, the positioning device 5 facilitates the positioning of the pipe 2, thereby facilitating the pushing of the pipe 2.

[0039] like Figure 1 As shown, the drive mechanism 4 includes a drive motor 41 mounted on the top of the base plate 3 and a lead screw 42 vertically fixed to the output shaft of the drive motor 41; the moving plate 31 is threadedly connected to the lead screw 42. When it is necessary to drive the moving plate 31 to move, the drive motor 41 is started first. At this time, the output shaft of the drive motor 41 drives the lead screw 42 to rotate, and the rotation of the lead screw 42 can drive the moving plate 31 to move. In summary, the drive mechanism 4 is designed to facilitate the movement of the moving plate 31.

[0040] like Figure 1 As shown, sleeves 43 are vertically fixed to both ends of the top of the base plate 3, and vertical rods 44 are vertically fixed to both ends of the bottom of the movable plate 31. The two vertical rods 44 are vertically slidably connected to the inner cavities of the two sleeves 43. The vertical rods 44 and sleeves 43 are provided to facilitate the guidance of the movable plate 31.

[0041] like Figure 2As shown, a disengagement mechanism 6 for separating the two clamping plates 54 from the pipe 2 is installed on the horizontal plate 51. The disengagement mechanism 6 includes a through hole 61 in the horizontal plate 51, a drive plate 62 that slides vertically through the through hole 61, and a first reset assembly 66 installed on one side of the through hole 61 for resetting the drive plate 62. A spherical surface 621 is provided on the top of the drive plate 62, and the spherical surface 621 matches the bottom of the push plate 33. Two rotating blocks 63 are hinged to the bottom of the horizontal plate 51. One corner of the two rotating blocks 63 is respectively hinged to the opposite inner side of the two clamping plates 54. First push blocks 64 are fixed to both sides of the drive plate 62. A receiving block 65 is fixed to the side of the two rotating blocks 63 away from the clamping plates 54. The two first push blocks 64 abut against the two receiving blocks 65 respectively. First, the hydraulic cylinder 32 is activated. Then, the piston rod of the hydraulic cylinder 32 drives the push plate 33 to move closer to the pipe 2. Next, the push plate 33, under the action of the spherical surface 621, drives the drive plate 62 to move downward. The downward movement of the drive plate 62 causes the two first push blocks 64 to move downward. The downward movement of the two first push blocks 64 drives the two receiving blocks 65 to rotate. The rotation of the two receiving blocks 65 drives the two rotating blocks 63 to rotate. The rotation of the two rotating blocks 63 drives the two clamping plates 54 to move away from the pipe 2. This can reduce the friction between the pipe 2 and the clamping plates 54. In addition, because the piston rod of the hydraulic cylinder 32 moves relatively fast, when the clamping plates 54 separate from the pipe 2, the push plate 33 immediately pushes the pipe 2 into the tunnel. In summary, the set separation mechanism 6 facilitates the separation of the pipe 2 from the clamping plates 54, thereby reducing the friction between the pipe 2 and the clamping plates 54.

[0042] like Figure 2 and Figure 3 As shown, the first reset assembly 66 includes a vertical groove 661 formed on one side of the through hole 61, a first vertical block 662 slidably connected to the vertical groove 661, and a first reset spring 663 vertically fixed to the bottom of the first vertical block 662. The first vertical block 662 is fixed to one side of the drive plate 62, and the end of the first reset spring 663 away from the first vertical block 662 is fixed to the bottom of the groove 661. The push plate 33 drives the drive plate 62 to move downward under the action of the spherical surface 621. The downward movement of the drive plate 62 causes the first vertical block 662 to move downward, and the downward movement of the first vertical block 662 presses against the first reset spring 663. When the push plate 33 separates from the drive plate 62, the first vertical block 662 drives the drive plate 62 to reset under the action of the first reset spring 663. In summary, the first reset assembly 66 facilitates the reset of the drive plate 62.

[0043] like Figure 2 and Figure 3As shown, a limiting mechanism 7 for limiting the drive plate 62 is installed on the side of the through hole 61 away from the vertical groove 661. The limiting mechanism 7 is provided to limit the drive plate 62, which can prevent the clamping plate 54 from resetting due to the upward reset of the drive plate 62 when the push plate 33 pushes into the pipe 2.

[0044] like Figure 2 and Figure 3 As shown, the limiting mechanism 7 includes a horizontal groove 71 opened on the side of the through hole 61 away from the vertical groove 661, a dovetail groove 72 opened on one side of the horizontal groove 71, a dovetail block 73 slidably connected to the dovetail groove 72 along the length direction of the horizontal plate 51, and a second return spring 731 fixed to one side of the dovetail groove 72; the second return spring 731 is arranged along the length direction of the horizontal plate 51, and the end of the second return spring 731 away from the dovetail block 73 is fixed to the inner wall of the end of the dovetail groove 72 away from the through hole 61; a limiting plate 74 is fixed to the bottom of the dovetail block 73, and a second push block 75 is fixed to the side of the drive plate 62 near the limiting plate 74; a second inclined surface 741 is provided on the end of the limiting plate 74 near the second push block 75, and the second inclined surface 741 matches the side wall of the second push block 75; a pushing assembly 76 for separating the limiting plate 74 from the second push block 75 is installed in the horizontal groove 71. The drive plate 62 moves downward, causing the second push block 75 to move downward. Then, under the action of the second inclined surface 741, the second push block 75 drives the limiting plate 74 to move away from the drive plate 62. The movement of the limiting plate 74 away from the drive plate 62 causes the dovetail block 73 to move away from the drive plate 62. The movement of the dovetail block 73 away from the drive plate 62 presses against the second return spring 731. When the second push block 75 moves below the limiting plate 74, the dovetail block 73 drives the limiting plate 74 to reset under the action of the second return spring 731, thereby preventing the second push block 75 from moving upward, and thus preventing the drive plate 62 from moving upward. In summary, the limiting mechanism 7 is designed to limit the drive plate 62.

[0045] like Figure 2 and Figure 3As shown, the pushing assembly 76 includes an electric push rod 761 horizontally mounted on the inner wall of the horizontal groove 71 and a second vertical block 762 fixed to the output end of the electric push rod 761. A third vertical block 763 is fixed to the bottom of the limiting plate 74, and the second vertical block 762 abuts against the side of the third vertical block 763 near the drive plate 62. When it is necessary to release the limit on the drive plate 62, the electric push rod 761 is activated first. At this time, the output end of the electric push rod 761 drives the second vertical block 762 to move away from the drive plate 62. The movement of the second vertical block 762 away from the drive plate 62 drives the third vertical block 763 to move away from the drive plate 62. The movement of the third vertical block 763 away from the drive plate 62 drives the limiting plate 74 to move away from the drive plate 62. The movement of the limiting plate 74 away from the drive plate 62 can release the limit on the second push block 75, and thus release the limit on the drive plate 62. Then, the limiting plate 74 can be reset under the action of the first reset spring 663. In summary, the push assembly 76 is designed to facilitate the release of the limit on the drive plate 62.

[0046] like Figure 1 and Figure 2 As shown, a support mechanism 8 for supporting the horizontal plate 51 is installed at the bottom of the horizontal plate 51. The support mechanism 8 includes a bracket 81 fixed to the bottom of the horizontal plate 51, a support rod 82 vertically slidably connected to the bracket 81, a horizontal plate 83 horizontally fixed to the top of the support rod 82, and a support plate 84 horizontally fixed to the bottom of the support rod 82. The support rod 82 passes through the bracket 81. Multiple support springs 85 are vertically arranged between the horizontal plate 83 and the bracket 81, with both ends of each support spring 85 fixed to the opposite inner sides of the horizontal plate 83 and the bracket 81, respectively. The downward movement of the drive plate 62 drives the horizontal plate 83 to move downward, the downward movement of the horizontal plate 83 drives the support rod 82 to move downward, and the downward movement of the support rod 82 drives the support plate 84 to move downward. This facilitates the support of the horizontal plate 51, and consequently, the support of the moving plate 31. In summary, the support mechanism 8 facilitates the support of the moving plate 31.

[0047] This application discloses a pipe jacking construction method using a pipe jacking device, comprising the following steps:

[0048] When pipe 2 is placed between two clamping plates 54, pipe 2, under the action of the first inclined surface 541, drives clamping plates 54 to move away from pipe 2, and clamping plates 54, moving away from pipe 2, press against clamping spring 55; when pipe 2 is placed between the two clamping plates 54, clamping plates 54, under the action of clamping spring 55, clamp pipe 2, thereby positioning pipe 2; when it is necessary to push pipe 2 forward, first activate hydraulic cylinder 32, then the piston rod of hydraulic cylinder 32 drives push plate 33 to move, then push plate 33, under the action of spherical surface 621, drives drive plate 62 to move downward, drive plate 62 to move downward, drive two first push blocks 64 to move downward, the two first push blocks 64 respectively drive two receiving blocks 65 to rotate, the two receiving blocks 65 respectively drive two rotating blocks 63 to rotate, the two rotating blocks 63 respectively drive two clamping plates 54 to move away from pipe 2, and then push plate 33 pushes pipe 2 into the tunnel; in addition, drive The downward movement of plate 62 causes the second push block 75 to move downward. Then, under the action of the second inclined surface 741, the second push block 75 drives the limiting plate 74 to move away from the driving plate 62. The movement of the limiting plate 74 away from the driving plate 62 causes the dovetail block 73 to move away from the driving plate 62. The movement of the dovetail block 73 away from the driving plate 62 presses against the second return spring 731. When the second push block 75 moves below the limiting plate 74, the dovetail block 73 drives the limiting plate 74 to reset under the action of the second return spring 731, thereby preventing the second push block 75 from moving upward, and thus preventing the driving plate 62 from moving upward, thus facilitating the push plate 33 to drive the pipe 2 forward. Furthermore, the downward movement of the driving plate 62 drives the horizontal plate 83 to move downward, the downward movement of the horizontal plate 83 drives the support rod 82 to move downward, and the downward movement of the support rod 82 drives the support plate 84 to move downward, thus facilitating the support of the horizontal plate 51, and thus facilitating the support of the moving plate 31.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pipe jacking device, characterized in that: The system includes a base plate (3), a movable plate (31) slidably connected to the top of the base plate (3), and a drive mechanism (4) mounted on the base plate (3) for driving the movable plate (31) to move. A hydraulic cylinder (32) is mounted on the top of the movable plate (31). A push plate (33) is fixedly connected to the piston rod of the hydraulic cylinder (32). An abutment plate (34) is fixedly connected to one end of the hydraulic cylinder (32) away from the push plate (33). The abutment plate (34) abuts against one side of the pit (1). A positioning device (5) for positioning the pipe (2) is mounted on one end of the movable plate (31) away from the abutment plate (34). The positioning device (5) includes components fixedly connected to the movable plate (31). 31) A horizontal plate (51) away from the end of the abutment plate (34), two vertical plates (52) respectively fixed to the top sides of the horizontal plate (51), two strip holes (511) opened on the horizontal plate (51), two guide rods (53) respectively fixed to the inner walls of the two strip holes (511), and two clamping plates (54) respectively slidably connected to the two guide rods (53); each clamping plate (54) has a first inclined surface (541) on the side near the pipe (2), and each clamping plate (54) is fixed to a clamping spring (55) on the side away from the pipe (2), and the end of the clamping spring (55) away from the clamping plate (54) is fixed to the side of the vertical plate (52).

2. The pipe jacking equipment according to claim 1, characterized in that: The drive mechanism (4) includes a drive motor (41) mounted on the top of the base plate (3) and a lead screw (42) fixed to the output shaft of the drive motor (41); the moving plate (31) is threadedly connected to the lead screw (42).

3. The pipe jacking equipment according to claim 1, characterized in that: Sleeves (43) are fixedly connected to both ends of the top of the base plate (3), and vertical rods (44) are fixedly connected to both ends of the bottom of the movable plate (31). The two vertical rods (44) are respectively slidably connected to the inner cavities of the two sleeves (43) in the vertical direction.

4. The pipe jacking equipment according to claim 1, characterized in that: The horizontal plate (51) is equipped with a disengagement mechanism (6) for separating the two clamps (54) from the pipe (2). The disengagement mechanism (6) includes a through hole (61) in the horizontal plate (51), a drive plate (62) that slides vertically through the through hole (61), and a first reset assembly (66) installed on one side of the through hole (61) for resetting the drive plate (62). The top of the drive plate (62) is provided with a spherical surface (621). 1) Matching the bottom of the push plate (33); the bottom of the horizontal plate (51) is hinged with two rotating blocks (63), one corner of the two rotating blocks (63) is respectively hinged to the opposite inner side of the two clamping plates (54), the two sides of the drive plate (62) are respectively fixed with first push blocks (64), and the two rotating blocks (63) are respectively fixed with receiving blocks (65) on the side away from the clamping plates (54), and the two first push blocks (64) respectively abut against the two receiving blocks (65).

5. The pipe jacking equipment according to claim 4, characterized in that: The first reset assembly (66) includes a vertical groove (661) formed on one side of the through hole (61), a first vertical block (662) slidably connected to the vertical groove (661) along the vertical direction, and a first reset spring (663) fixed to the bottom of the first vertical block (662); the first vertical block (662) is fixed to one side of the drive plate (62), and the end of the first reset spring (663) away from the first vertical block (662) is fixed to the bottom of the groove (661).

6. The pipe jacking equipment according to claim 5, characterized in that: A limiting mechanism (7) for limiting the drive plate (62) is installed on the side of the through hole (61) away from the vertical groove (661).

7. The pipe jacking equipment according to claim 6, characterized in that: The limiting mechanism (7) includes a horizontal groove (71) opened on the side of the through hole (61) away from the vertical groove (661), a dovetail groove (72) opened on the side of the horizontal groove (71), a dovetail block (73) slidably connected to the dovetail groove (72), and a second return spring (731) fixed to one side of the dovetail groove (72); one end of the second return spring (731) away from the dovetail block (73) is fixed to the inner wall of the end of the dovetail groove (72) away from the through hole (61); A limiting plate (74) is fixedly connected to the bottom of the dovetail block (73). A second push block (75) is fixedly connected to the side of the drive plate (62) near the limiting plate (74). A second inclined surface (741) is provided at the end of the limiting plate (74) near the second push block (75). The second inclined surface (741) matches the side wall of the second push block (75). A pushing assembly (76) for separating the limiting plate (74) from the second push block (75) is installed in the horizontal groove (71).

8. The pipe jacking equipment according to claim 7, characterized in that: The pushing assembly (76) includes an electric push rod (761) installed on the inner wall of the horizontal groove (71) and a second vertical block (762) fixed to the output end of the electric push rod (761). A third vertical block (763) is fixed to the bottom of the limiting plate (74), and the second vertical block (762) abuts against the side of the third vertical block (763) near the drive plate (62).

9. The pipe jacking equipment according to claim 4, characterized in that: The bottom of the horizontal plate (51) is equipped with a support mechanism (8) for supporting the horizontal plate (51). The support mechanism (8) includes a bracket (81) fixed to the bottom of the horizontal plate (51), a support rod (82) slidably connected to the bracket (81) in a vertical direction, a horizontal plate (83) fixed to the top of the support rod (82), and a support plate (84) fixed to the bottom of the support rod (82). A plurality of support springs (85) are provided between the horizontal plate (83) and the bracket (81), and the two ends of each support spring (85) are respectively fixed to the opposite inner sides of the horizontal plate (83) and the bracket (81).

10. A pipe jacking construction method using a pipe jacking equipment, based on the pipe jacking equipment according to any one of claims 1-9, characterized in that: Includes the following steps: When the pipe (2) is placed between the two clamping plates (54), the pipe (2) is driven by the first inclined plane (541) to move the clamping plates (54) away from the pipe (2). The clamping plates (54) move away from the pipe (2) and press against the clamping spring (55). When the pipe (2) is placed between the two clamping plates (54), the clamping plates (54) clamp the pipe (2) under the action of the clamping spring (55), thus positioning the pipe (2). When it is necessary to push... When the pipeline (2) moves forward, the hydraulic cylinder (32) is activated first. Then, the piston rod of the hydraulic cylinder (32) drives the push plate (33) to move. Then, the push plate (33) drives the drive plate (62) to move downward under the action of the spherical surface (621). The downward movement of the drive plate (62) drives the two first push blocks (64) to move downward. The downward movement of the two first push blocks (64) drives the two receiving blocks (65) to rotate respectively. The rotation of the two receiving blocks (65) drives the two rotating blocks (63) to rotate respectively. The block (63) rotates, driving the two clamping plates (54) to move away from the pipe (2), and then the pusher plate (33) pushes the pipe (2) into the tunnel; in addition, the drive plate (62) moves downward, causing the second pusher block (75) to move downward, and then the second pusher block (75), under the action of the second inclined plane (741), drives the limiting plate (74) to move away from the drive plate (62), and the limiting plate (74) moving away from the drive plate (62) causes the dovetail block (73) to move away from the drive plate (62). When the plate (62) moves in the direction of the drive plate (62), the dovetail block (73) moves away from the drive plate (62) and presses against the second reset spring (731); when the second push block (75) moves to the bottom of the limit plate (74), the dovetail block (73) drives the limit plate (74) to reset under the action of the second reset spring (731), thereby preventing the second push block (75) from moving upward, and thus preventing the drive plate (62) from moving upward, so that the push plate (33) can drive the pipe (2) forward. Furthermore, the downward movement of the drive plate (62) drives the horizontal plate (83) to move downward, the downward movement of the horizontal plate (83) drives the support rod (82) to move downward, and the downward movement of the support rod (82) drives the support plate (84) to move downward. This facilitates the support of the horizontal plate (51), and in turn facilitates the support of the moving plate (31).

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