Reverse double-push jacking miniature pipe jacking device

Abstract

The utility model relates to a reverse double-push jacking miniature pipe jacking device, which belongs to the technical field of pipe jacking equipment and comprises a support, a backrest is fixed on the right side of the support, a through hole is formed in the right side of the backrest, guide rails are fixed on the front side and the rear side of the upper surface of the support, and guide seats are slidably connected to the upper surfaces of the guide rails. Oil cylinders are fixed to the front end and the rear end of the left side of the backrest correspondingly, clamping rings are fixed to the outer surfaces of oil cylinder bodies, movable clamping plates are arranged on the upper surfaces of the two oil cylinders, and a portable mechanism used for conveniently transporting the pipe jacking equipment is arranged in an inner cavity of the support. According to the reverse double-push jacking miniature pipe jacking device, a portable mechanism is arranged in an inner cavity of the support, after pipe jacking equipment is used, the height of universal wheels can be changed through rotation of driving rods till the bottoms of the universal wheels make contact with the ground, and therefore the pipe jacking equipment can be transported through the universal wheels; and the use convenience of workers is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe jacking equipment, in particular to a micro pipe jacking device with reverse double-push jacking. Background Technique

[0002] Pipe jacking construction is a trenchless construction method, which is a pipeline laying construction technology with little or no excavation. Pipe jacking method construction is to generate jacking force with the help of jacking equipment in the working pit, overcome the friction between the pipeline and the surrounding soil, jack the pipeline into the soil according to the designed slope, and transport the soil away.

[0003] After a section of pipe is jacked into the soil layer, the second section of pipe is lowered and jacked forward continuously. Its principle is to use the thrust of the main jacking cylinder, between the pipelines and the relay jacks, etc., to push the tool pipe or tunneling machine from the working pit through the soil layer and into the receiving pit for hoisting. The pipeline follows closely behind the tool pipe or tunneling machine and is buried between the two pits. However, the existing pipe jacking equipment occupies a large space, which is not convenient for the staff to transport and carry during use, and increases the labor intensity of the staff. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a micro pipe jacking device with reverse double-push jacking, which has the advantages of being convenient for transportation, etc., and solves the problems that the existing pipe jacking equipment occupies a large space, is not convenient for the staff to transport and carry during use, and increases the labor intensity of the staff.

[0005] To achieve the above object, the utility model provides the following technical scheme: A micro pipe jacking device with reverse double-push jacking, including a bracket, a backrest is fixed on the right side of the bracket, a through hole is opened on the right side of the backrest, guide rails are fixed on the front and rear sides of the upper surface of the bracket, a guide seat is slidably connected to the upper surface of the guide rail, oil cylinders are fixed at the front and rear ends on the left side of the backrest, a snap ring is fixed on the outer surface of the cylinder body of the oil cylinder, a movable clamping plate is arranged on the upper surface of the two oil cylinders, a portable mechanism for facilitating the transportation of the pipe jacking equipment is arranged in the inner cavity of the bracket, and a fixing mechanism for facilitating the fixing of the movable clamping plate is arranged on the outer surface of the cylinder body of the oil cylinder;

[0006] The portable mechanism includes a threaded rod, a driven bevel gear, a driving bevel gear, a driving rod, a threaded sleeve, two connecting plates, two linkage plates and four universal wheels. The threaded rod is rotatably connected between the opposite sides of the inner top wall and the inner bottom wall of the bracket through a bearing, the driven bevel gear is fixed on the outer surface of the threaded rod, the driving bevel gear is meshed and connected to the upper surface of the driven bevel gear, the driving rod is fixed in the inner cavity of the driving bevel gear, the threaded sleeve is threadedly connected with the threaded rod, the two connecting plates are fixed on the left and right sides of the outer surface of the threaded sleeve, the two linkage plates are fixed on the opposite sides of the two connecting plates, and the universal wheels are fixed on the lower surface of the linkage plates.

[0007] By adopting this technical solution, after using the pipe jacking equipment, the height of the universal wheel can be changed by rotating the driving rod until the bottom of the universal wheel contacts the ground, so that the pipe jacking equipment can be transported by the universal wheel, greatly improving the convenience for the staff during use.

[0008] Furthermore, the number of the snap rings is not less than two, and the snap rings with the number not less than two are evenly distributed on the outer surface of the oil cylinder body.

[0009] Furthermore, fixed seats are fixed at both the left and right ends of the outer surface of the bracket, and a positioning rod whose one end penetrates through and extends to the lower side thereof is threadedly connected to the upper surface of the fixed seat.

[0010] By adopting this technical solution, the fixed seats and the positioning rods provided can position the position of the bracket.

[0011] Furthermore, the other end of the driving rod penetrates through the bracket and extends to the front side of the bracket and is fixed with a handle. The driving rod is rotatably connected to the bracket through a bearing, and the two connecting plates are symmetrically distributed on the left and right sides of the vertical central axis of the threaded sleeve.

[0012] By adopting this technical solution, the handle provided can facilitate the staff to rotate the driving rod.

[0013] Furthermore, sliding bars are fixed on the opposite sides of the left and right inner side walls of the bracket cavity, sliding rods are fixed on the left and right sides of the linkage plate, the sliding rods move linearly up and down in the inner cavity of the sliding bars, and fixing holes with an inner cavity size larger than the size of the universal wheel are opened at both the left and right ends of the lower surface of the bracket.

[0014] By adopting this technical solution, the sliding bars and the sliding rods provided can limit the movement of the threaded sleeve so that it can only move linearly.

[0015] Furthermore, the fixing mechanism includes a plurality of inserting cylinders, two movable plates, four spring telescopic rods and two inserting rods. The inserting cylinders are fixed on the outer surface of the oil cylinder body, the two movable plates are arranged on the front and rear sides of the movable clamping plate, the four spring telescopic rods are distributed in pairs at the upper and lower ends between the opposite sides of the movable plate and the movable clamping plate, and the inserting rods are fixed on the side of the movable plate facing the movable clamping plate.

[0016] By adopting this technical solution, it is convenient for the staff to adjust the position of the movable clamping plate, and it is also convenient for the staff to fix and disassemble the movable clamping plate, improving the efficiency of the pipe jacking equipment when jacking the pipeline.

[0017] Furthermore, a plurality of the insertion cylinders are evenly distributed on the outer surface of the oil cylinder block. The outer diameter of the insertion rod is adapted to the inner diameter of the insertion cylinder. Two mutually nested telescopic sleeve rods are fixed to the top and bottom of the opposite sides of the movable plate and the movable clamping plate.

[0018] By adopting this technical solution, the provided telescopic sleeve rods can limit the movement of the movable plate.

[0019] Furthermore, an arc-shaped groove is formed on the lower surface of the movable clamping plate. The size of the inner cavity of the arc-shaped groove is adapted to the size of the oil cylinder block. Insertion holes adapted to the size of the insertion rod are formed on both the front and rear sides of the movable clamping plate.

[0020] By adopting this technical solution, the provided insertion holes can facilitate the movement of the insertion rod.

[0021] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0022] 1. In the reverse double-push jacking micro pipe jacking device, a portable mechanism is arranged in the inner cavity of the bracket. After using the pipe jacking equipment, the height of the universal wheel can be changed by rotating the driving rod until the bottom of the universal wheel contacts the ground, so that the pipe jacking equipment can be transported by the universal wheel, greatly improving the convenience for the staff during use.

[0023] 2. In the reverse double-push jacking micro pipe jacking device, through the mutual cooperation among the provided insertion cylinder, movable plate, spring telescopic rod and insertion rod, it is convenient for the staff to adjust the position of the movable clamping plate, and it is also convenient for the staff to fix and disassemble the movable clamping plate, improving the efficiency of the pipe jacking equipment when jacking the pipeline. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of the present utility model;

[0025] Figure 2 It is a schematic structural diagram of the portable mechanism of the present utility model;

[0026] Figure 3 It is a schematic structural diagram of the fixing mechanism of the present utility model;

[0027] Figure 4 It is a 3D schematic diagram of the structure of a part of the fixing mechanism of the present utility model.

[0028] In the figure: 1. Bracket; 2. Backrest; 3. Through hole; 4. Guide rail; 5. Guide seat; 6. Fixed seat; 7. Oil cylinder; 8. Snap ring; 9. Movable clamping plate; 10. Portable mechanism; 101. Threaded rod; 102. Driven bevel gear; 103. Driving bevel gear; 104. Driving rod; 105. Threaded sleeve; 106. Connecting plate; 107. Linking plate; 108. Universal wheel; 11. Fixing mechanism; 111. Insertion cylinder; 112. Movable plate; 113. Spring telescopic rod; 114. Insertion rod. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figure 1 , a micro pipe jacking device with reverse double push and jacking in this embodiment includes a bracket 1. A backrest 2 is fixed on the right side of the bracket 1. A through hole 3 is opened on the right side of the backrest 2. Guide rails 4 are fixed on both the front and rear sides of the upper surface of the bracket 1. A guide seat 5 is slidably connected to the upper surface of the guide rail 4. Oil cylinders 7 are fixed at both the front and rear ends on the left side of the backrest 2. A snap ring 8 is fixed on the outer surface of the cylinder body of the oil cylinder 7. A movable clamping plate 9 is provided on the upper surfaces of the two oil cylinders 7. A portable mechanism 10 for facilitating the transportation of the pipe jacking equipment is arranged in the inner cavity of the bracket 1. A fixing mechanism 11 for facilitating the fixation of the movable clamping plate 9 is arranged on the outer surface of the cylinder body of the oil cylinder 7.

[0031] In this embodiment, the number of snap rings 8 is not less than two. The snap rings 8 with a number not less than two are evenly distributed on the outer surface of the cylinder body of the oil cylinder 7. Fixed seats 6 are fixed on both the left and right ends of the outer surface of the bracket 1. A positioning rod is threadedly connected to the upper surface of the fixed seat 6 and penetrates through and extends to the lower side thereof. The provided fixed seats 6 and positioning rods can position the position of the bracket 1.

[0032] It should be noted that before the pipe joint is lowered, the movable clamping plate 9 is installed on the innermost snap ring 8. The inner empty space of the cylinder body of the oil cylinder 7 is just the length of the pipe joint. After the initial jacking until the cylinder body of the oil cylinder 7 contacts the well wall of the launching shaft, the movable clamping plate 9 is released. The cylinder body of the oil cylinder 7 is retracted and the movable clamping plate 9 is fixed on the outermost snap ring 8 fixed on the outer surface of the cylinder body of the oil cylinder 7 until the movable clamping plate 9 is restored to the initial position after the second jacking is completed.

[0033] Please refer to Figure 2, in order to transport the pipe jacking equipment, the portable mechanism 10 in this embodiment includes a threaded rod 101, a driven bevel gear 102, a driving bevel gear 103, a driving rod 104, a threaded sleeve 105, two connecting plates 106, two linkage plates 107 and four universal wheels 108. The threaded rod 101 is rotatably connected between the opposite sides of the inner top wall and the inner bottom wall of the bracket 1 through a bearing. The driven bevel gear 102 is fixed on the outer surface of the threaded rod 101. The driving bevel gear 103 is meshed and connected to the upper surface of the driven bevel gear 102. The driving rod 104 is fixed in the inner cavity of the driving bevel gear 103. By rotating the driving rod 104, the rotation of the driving rod 104 drives the driving bevel gear 103 to rotate. The rotation of the driving bevel gear 103 causes the driven bevel gear 102 meshed and connected to it to rotate.

[0034] The threaded sleeve 105 is threadedly connected to the threaded rod 101. The rotation of the driven bevel gear 102 drives the threaded rod 101 fixed in the inner cavity to rotate. The rotation of the threaded rod 101 causes the threaded sleeve 105 threadedly connected to its surface to move downward. Two connecting plates 106 are fixed on the left and right sides of the outer surface of the threaded sleeve 105. Two linkage plates 107 are fixed on the opposite sides of the two connecting plates 106. The universal wheels 108 are fixed on the lower surface of the linkage plates 107. The movement of the threaded sleeve 105 drives the connecting plates 106 and the linkage plates 107 to move downward. Thus, the universal wheels 108 can move downward under the drive of the linkage plates 107 until the bottom of the universal wheels 108 contacts the ground, so as to facilitate the staff to transport the pipe jacking equipment.

[0035] In this embodiment, the other end of the driving rod 104 penetrates through the bracket 1 and extends to the front side of the bracket 1 and is fixed with a handle. The driving rod 104 is rotatably connected to the bracket 1 through a bearing. The two connecting plates 106 are symmetrically distributed on the left and right sides of the vertical central axis of the threaded sleeve 105.

[0036] Wherein, sliding strips are fixed on the opposite sides of the left and right side walls of the inner cavity of the bracket 1. Sliding rods are fixed on the left and right sides of the linkage plates 107. The sliding rods move linearly up and down in the inner cavity of the sliding strips. The arranged sliding strips and sliding rods can limit the movement of the threaded sleeve 105 so that it can only move linearly. Fixing holes with an inner cavity size larger than the size of the universal wheels 108 are opened at the left and right ends of the lower surface of the bracket 1.

[0037] It should be noted that the pipe jacking equipment can be transported through the universal wheels 108, which greatly improves the convenience of the staff during use and reduces the labor intensity of the staff.

[0038] Please refer to Figures 3 to 4, in order to improve the efficiency of the pipe jacking equipment when jacking the pipeline, the fixing mechanism 11 in this embodiment includes a plurality of inserting cylinders 111, two movable plates 112, four spring telescopic rods 113 and two inserting rods 114. The inserting cylinders 111 are fixed on the outer surface of the cylinder body of the oil cylinder 7. The two movable plates 112 are arranged on the front and rear sides of the movable clamping plate 9. The four spring telescopic rods 113 are distributed in pairs at the upper and lower ends between the opposite sides of the movable plate 112 and the movable clamping plate 9. The inserting rods 114 are fixed on the side of the movable plate 112 facing the movable clamping plate 9, and the movable plate 112 can be moved away from the movable clamping plate 9. The movement of the movable plate 112 causes the spring telescopic rods 113 to be stretched, the telescopic sleeve rods to elongate, and the movement of the movable plate 112 drives the inserting rods 114 to be withdrawn from the inner cavity of the inserting cylinder 111 on the surface of the cylinder body of the oil cylinder 7.

[0039] Among them, a plurality of inserting cylinders 111 are evenly distributed on the outer surface of the cylinder body of the oil cylinder 7. The outer diameter of the inserting rod 114 is adapted to the inner diameter of the inserting cylinder 111. Two mutually nested telescopic sleeve rods are fixed at the top and bottom of the opposite side of the movable plate 112 and the movable clamping plate 9.

[0040] In this embodiment, an arc-shaped groove is formed on the lower surface of the movable clamping plate 9. The size of the inner cavity of the arc-shaped groove is adapted to the size of the cylinder body of the oil cylinder 7. Insertion holes adapted to the size of the inserting rods 114 are formed on both the front and rear sides of the movable clamping plate 9.

[0041] It can be understood that the movable clamping plate 9 is moved to a suitable position, the limit on the movable plate 112 is released, and after the spring telescopic rods 113 are unrestricted, they retract and drive the movable plate 112 to move towards the side close to the movable clamping plate 9. The movement of the movable plate 112 can drive the inserting rods 114 to be inserted into the inserting cylinders 111 on the surface of the cylinder body of the oil cylinder 7 again from the insertion holes, and the position of the movable clamping plate 9 can be fixed.

[0042] It should be noted that the provided fixing mechanism 11 can facilitate the staff to adjust the position of the movable clamping plate 9, and facilitate the staff to fix and disassemble the movable clamping plate 9, improving the efficiency of the pipe jacking equipment when jacking the pipeline.

[0043] The working principle of the above embodiment is as follows:

[0044] (1) Before lowering the pipeline pipe joint, install the movable clamping plate 9 on the innermost clamping ring 8. The inner cavity of the cylinder body of the oil cylinder 7 is just the length of the pipe joint. After the first jacking until the cylinder body of the oil cylinder 7 contacts the shaft wall of the launching shaft, release the movable clamping plate 9, retract the cylinder body of the oil cylinder 7 and fix the movable clamping plate 9 on the outermost clamping ring 8 fixed on the outer surface of the cylinder body of the oil cylinder 7 until the movable clamping plate 9 is restored to the initial position after the second jacking is completed; in order to facilitate the fixation of the position of the movable clamping plate 9, the movable plate 112 can be moved to the side away from the movable clamping plate 9. The movement of the movable plate 112 causes the spring telescopic rod 113 to be stretched, the telescopic sleeve rod to elongate, and the movement of the movable plate 112 drives the insertion rod 114 to be withdrawn from the inner cavity of the insertion cylinder 111 on the surface of the cylinder body of the oil cylinder 7. Then move the movable clamping plate 9 to a suitable position, release the limit on the movable plate 112. After the spring telescopic rod 113 is unrestricted, it retracts and drives the movable plate 112 to move towards the side close to the movable clamping plate 9. The movement of the movable plate 112 can drive the insertion rod 114 to be inserted into the insertion cylinder 111 on the surface of the cylinder body of the oil cylinder 7 again from the insertion hole, and the position of the movable clamping plate 9 can be fixed.

[0045] (2) In order to facilitate the staff to carry, after use, the positioning rod can be rotated so that the positioning rod moves upward from the inner cavity of the fixed seat 6 and separates from the ground. Then, by rotating the driving rod 104, the rotation of the driving rod 104 drives the driving bevel gear 103 to rotate. The rotation of the driving bevel gear 103 causes the driven bevel gear 102 engaged with it to rotate. The rotation of the driven bevel gear 102 drives the threaded rod 101 fixed in the inner cavity to rotate. The rotation of the threaded rod 101 causes the threaded sleeve 105 threadedly connected to its surface to move downward. The movement of the threaded sleeve 105 drives the connecting plate 106 and the linkage plate 107 to move downward. Thus, the universal wheel 108 can be driven by the linkage plate 107 to move downward until the bottom of the universal wheel 108 contacts the ground, so as to facilitate the staff to transport the pipe jacking equipment.

Claims

1. A reverse double-push micro-pipe jacking device, comprising a bracket (1), characterized in that: A backrest (2) is fixed to the right side of the bracket (1), a through hole (3) is provided on the right side of the backrest (2), guide rails (4) are fixed to the front and rear sides of the upper surface of the bracket (1), a guide seat (5) is slidably connected to the upper surface of the guide rail (4), a cylinder (7) is fixed to the front and rear ends of the left side of the backrest (2), a clamping ring (8) is fixed to the outer surface of the cylinder body of the cylinder (7), and movable clamping plates (9) are provided on the upper surfaces of the two cylinders (7), a portable mechanism (10) for facilitating the transportation of jacking equipment is provided in the inner cavity of the bracket (1), and a fixing mechanism (11) for facilitating the fixing of the movable clamping plate (9) is provided on the outer surface of the cylinder body of the cylinder (7); The portable mechanism (10) comprises a threaded rod (101), a driven bevel gear (102), a driving bevel gear (103), a driving rod (104), a threaded sleeve (105), two connecting plates (106), two linkage plates (107) and four universal wheels (108); the threaded rod (101) is rotatably connected to the center between the inner top wall and the inner bottom wall of the bracket (1) via a bearing; the driven bevel gear (102) is fixed to the outer surface of the threaded rod (101); and the driving bevel gear (103) is fixed to the outer surface of the threaded rod (101). The gear (103) is meshedly connected to the upper surface of the driven bevel gear (102), the driving rod (104) is fixed in the inner cavity of the driving bevel gear (103), the threaded sleeve (105) is threadedly connected to the threaded rod (101), the two connecting plates (106) are fixed to the left and right sides of the outer surface of the threaded sleeve (105), the two linkage plates (107) are fixed to the opposite sides of the two connecting plates (106), and the universal wheel (108) is fixed to the lower surface of the linkage plate (107).

2. A reverse double-push micro-pipe jacking device according to claim 1, characterized in that: The number of the clamping rings (8) is not less than two, and the number of the clamping rings (8) is not less than two and is evenly distributed on the outer surface of the cylinder body of the oil cylinder (7).

3. A reverse double-push micro-pipe jacking device according to claim 1, characterized in that: A fixing seat (6) is fixed to both left and right ends of the outer surface of the bracket (1), and the upper surface of the fixing seat (6) is threadedly connected to a positioning rod having one end passing through and extending to the lower side thereof.

4. A reverse double-push micro-pipe jacking device according to claim 1, characterized in that: The other end of the driving rod (104) passes through the bracket (1) and extends to the front side of the bracket (1) and is fixed with a handle. The driving rod (104) and the bracket (1) are rotatably connected via a bearing. The two connecting plates (106) are symmetrically distributed on the left and right sides of the vertical center axis of the threaded sleeve (105).

5. A reverse double-push micro-pipe jacking device according to claim 1, characterized in that: Slide bars are fixed on opposite sides of the left and right side walls of the inner cavity of the bracket (1), and slide bars are fixed on the left and right sides of the linkage plate (107). The slide bars perform linear up and down motion in the inner cavity of the slide bars. The left and right ends of the lower surface of the bracket (1) are provided with fixing holes whose inner cavity size is larger than that of the universal wheel (108).

6. A reverse double-push micro-pipe jacking device according to claim 1, characterized in that: The fixing mechanism (11) comprises a plurality of inserting tubes (111), two movable plates (112), four spring telescopic rods (113) and two inserting rods (114); the inserting tubes (111) are fixed to the outer surface of the cylinder body of the oil cylinder (7); the two movable plates (112) are arranged on the front and rear sides of the movable clamping plate (9); the four spring telescopic rods (113) are distributed in pairs at the upper and lower ends between the movable plate (112) and the opposite side of the movable clamping plate (9); and the inserting rods (114) are fixed to the side of the movable plate (112) facing the movable clamping plate (9).

7. A reverse double-push micro-pipe jacking device according to claim 6, characterized in that: A plurality of the insert cylinders (111) are evenly distributed on the outer surface of the cylinder body of the oil cylinder (7); the outer diameter of the insert rod (114) matches the inner diameter of the insert cylinder (111); and two mutually nested telescopic sleeve rods are fixed to the top and bottom of the side opposite to the movable plate (112) and the movable clamping plate (9).

8. A reverse double-push micro pipe jacking device according to claim 6, characterized in that: The lower surface of the movable clamping plate (9) is provided with an arc-shaped groove, the inner cavity of which has a size that matches the size of the cylinder body of the oil cylinder (7), and the front and rear sides of the movable clamping plate (9) are provided with insertion holes that match the size of the insertion rod (114).

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