Pipe jacking machine for trenchless pipeline construction under complex geological conditions

Abstract

The present invention discloses a pipe jacking machine for trenchless pipeline construction under complex geological conditions, relating to the technical field of trenchless pipeline construction, comprising a cylinder and a drill bit mechanism rotatably connected to the cylinder, the drill bit mechanism comprising a drill bit seat, a first tool assembly, a second tool assembly, a third tool assembly, a drive rod and a drive disk, wherein the drill bit seat is rotatably arranged on the cylinder, four tool storage cavities are circumferentially opened on the drill bit seat, two drive rods are slidably arranged in the tool storage cavities, and two first tool assemblies and a third tool assembly are fixedly arranged on the two drive rods in the two tool storage cavities located in the vertical position, and two second tool assemblies and a third tool assembly are fixedly arranged on the two drive rods in the two tool storage cavities located in the horizontal direction, a partition plate is fixedly arranged in the tool storage cavity, and a drive disk for driving the drive rod to slide is rotatably arranged in the partition plate; thereby improving the drilling efficiency of the pipe jacking machine.

Description

Technical Field

[0001] The invention relates to the technical field of trenchless pipeline construction, in particular to a pipe jacking machine for trenchless pipeline construction under complex geological conditions. Background Art

[0002] The pipe jacking machine for trenchless pipeline construction is a special equipment used for laying underground pipelines. Its core function is to complete pipeline installation through mechanical jacking without excavating the surface. In the field of trenchless pipeline construction, the pipe jacking machine needs to cope with complex and changeable engineering geological conditions (such as rock layers, soft soil, gravel layers, composite formations, etc.). Traditional pipe jacking machines mostly use fixed tool configurations, which makes the pipe jacking machine unable to meet the drilling needs of different geological conditions. Therefore, different tools need to be replaced according to different geological environments during drilling to complete the entire drilling work.

[0003] Currently, tool switching is mostly done manually, that is, after the pipe jacking machine is shut down, it is manually switched. This method is time-consuming and labor-intensive, and there are safety hazards. The switching efficiency is low, especially when working in narrow underground spaces. That is, traditional pipe jacking machines have poor adaptability of the pipe jacking mechanism tools under complex geological conditions, low switching efficiency, and low drilling efficiency, which slows down the progress of the entire pipeline construction.

[0004] Therefore, it is necessary to provide a pipe jacking machine for trenchless pipeline construction under complex geological conditions to solve the problems raised in the above background technology. Summary of the Invention

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a pipe jacking machine for trenchless pipeline construction under complex geological conditions, comprising a cylinder and a drill bit mechanism rotatably connected to the cylinder, the drill bit mechanism comprising a drill bit seat, a first tool assembly, a second tool assembly, a third tool assembly, a drive rod and a drive disk, wherein the drill bit seat is rotatably arranged on the cylinder, four tool storage cavities are circumferentially opened on the drill bit seat, two drive rods are slidably arranged in the tool storage cavities, and two first tool assemblies and a third tool assembly are fixedly arranged on the two drive rods in the two tool storage cavities located in the vertical position, and two second tool assemblies and a third tool assembly are fixedly arranged on the two drive rods in the two tool storage cavities located in the horizontal direction, a partition plate is fixedly arranged in the tool storage cavity, a drive disk for driving the drive rod to slide is rotatably arranged in the partition plate, and a hydraulic telescopic rod is hinged between the drive disk and the partition plate.

[0006] Preferably, the first tool assembly comprises a tool holder 1 and a hob, wherein the tool holder 1 is fixedly arranged on the driving rod, and two sets of hobs are rotatably arranged on the tool holder 1;

[0007] The second tool assembly includes a tool holder 2 and a toothed cutter, wherein the tool holder 2 is fixedly mounted on the driving rod and two sets of toothed cutters are rotatably mounted on the tool holder 2;

[0008] The third tool assembly includes a tool holder three and a scraper, wherein the tool holder three is fixedly arranged on the driving rod, and two groups of scrapers are fixedly arranged on the tool holder three.

[0009] Preferably, guide blocks are fixedly provided at both ends of the driving rod, and a guide rod is fixedly provided at the middle of the driving rod;

[0010] Two first guide rails are provided on the upper and lower end surfaces of the partition plate and the tool storage cavity, the two guide blocks are respectively slidably arranged along the first guide rails on the upper and lower end surfaces of the tool storage cavity, and the guide rod is slidably arranged along the first guide rails on the partition plate.

[0011] Preferably, the driving disc is provided with two guide grooves;

[0012] The guide rod penetrates the partition plate and is slidably arranged along the guide groove.

[0013] Preferably, two second guide rails are provided on the upper and lower end surfaces of the tool storage cavity and the partition plate, and the first guide rail and the second guide rail are each composed of a straight groove and an oblique groove, and the length of the oblique groove in the horizontal direction is twice that of the straight groove, and the straight groove and oblique groove in the first guide rail are arranged parallel to the straight groove and oblique groove in the second guide rail and have the same length.

[0014] Preferably, the tool holder 1, the tool holder 2 and the tool holder 3 are all fixedly provided with a limit block, and the limit block is slidably arranged along the second guide rail;

[0015] Two rectangular stepped slots are provided in the middle of the output surface of the tool storage cavity;

[0016] The tool holder 1, the tool holder 2 and the tool holder 3 are all fixedly provided with a clamping plate, and the clamping plate can be fixedly clamped into the clamping slot.

[0017] Preferably, a center cutter head is fixed at the center position of the drill seat, and a plurality of auxiliary cutter blocks are fixedly provided in a circumferential manner on the surface and outer ring of the drill seat.

[0018] Compared with the prior art, the present invention provides a pipe jacking machine for trenchless pipeline construction under complex geological conditions, which has the following beneficial effects:

[0019] The present invention provides a tool storage cavity on the drill bit seat so that three different types of tool assemblies can be slidably stored in the tool storage cavity, namely, the first tool assembly is adapted to rock, the second tool assembly is adapted to gravel, and the third tool assembly is adapted to soft soil. At the same time, a hydraulic telescopic rod is used to drive the drive disk to rotate, and combined with the linkage of the first guide rail and the guide groove, the tool switching can be completed by relying on only a single rotation of the drive disk, thereby greatly reducing the time spent on tool switching, thereby enabling the pipe jacking machine to adapt to a variety of complex geological environments. The horizontal length of the inclined groove is set to twice the length of the straight groove, so that the two tool assemblies have a 50% phase difference during sliding switching, thereby avoiding the phenomenon of tool jamming. In addition, a second guide rail parallel to the first guide rail is additionally provided. Through the sliding of the limit block along the second guide rail and the sliding of the guide rod and the guide block along the first guide rail, the position of the tool group assembly will not change during the sliding switching process, that is, it is ensured that the tool surface of the tool assembly can protrude from the drill bit seat for drilling work and cooperate with the locking of the card slot to make the tool posture stable after switching, thereby improving the drilling efficiency of the pipe jacking machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 for Figure 1 A magnified schematic diagram of the structure of part A in the middle;

[0022] Figure 3 for Figure 1 A magnified schematic diagram of the structure of part B in the middle;

[0023] Figure 4 Schematic diagram of the structure of the drill bit holder in the present invention;

[0024] Figure 5 Schematic diagram of the structure of the first tool assembly in the present invention;

[0025] Figure 6 Schematic diagram of the structure of the second tool assembly in the present invention;

[0026] Figure 7 Schematic diagram of the structure of the third tool assembly in the present invention;

[0027] In the figure: 1. Cylinder; 2. Drill bit holder; 21. Tool storage chamber; 211. Clamping slot; 22. Spacer; 23. Hydraulic telescopic rod; 24. First guide rail; 25. Second guide rail; 26. Center cutter head; 27. Auxiliary cutter block; 3. First tool assembly; 31. Tool holder one; 311. Limit block; 312. Clamping plate; 32. Hob; 4. Second tool assembly; 41. Tool holder two; 42. Toothed cutter; 5. Third tool assembly; 51. Tool holder three; 52. Scraper; 6. Drive rod; 61. Guide block; 62. Guide rod; 7. Drive disk; 71. Guide slot. DETAILED DESCRIPTION

[0028] See also Figures 1 to 7 In an embodiment of the present invention, a pipe jacking machine for trenchless pipeline construction under complex geological conditions includes a cylinder 1 and a drill bit mechanism rotatably connected to the cylinder 1, the drill bit mechanism including a drill bit seat 2, a first tool assembly 3, a second tool assembly 4, a third tool assembly 5, a drive rod 6 and a drive disk 7, wherein the drill bit seat 2 is rotatably arranged on the cylinder 1, and four tool storage cavities 21 are circumferentially opened on the drill bit seat 2, two drive rods 6 are slidably arranged in the tool storage cavity 21, and two first tool assemblies are fixedly arranged on the two drive rods 6 in the two tool storage cavities 21 located in the vertical position. 3 and the third tool assembly 5, two second tool assemblies 4 and the third tool assembly 5 are fixedly provided on the two driving rods 6 in the two tool storage chambers 21 in the horizontal direction, a partition plate 22 is fixedly provided in the tool storage chamber 21, a driving disc 7 for driving the driving rod 6 to slide is rotatably provided in the partition plate 22, and a hydraulic telescopic rod 23 is hinged between the driving disc 7 and the partition plate 22, and also includes a main top oil cylinder, a screw machine, an articulated oil cylinder, a shell mechanism, a pipe joint, a cylinder bracket and a rear seat, and the above structures are all necessary structures of the pipe jacking machine, which belong to the existing technology and are not described in detail here;

[0029] The first tool assembly 3 includes a tool holder 31 and a roller cutter 32, wherein the tool holder 31 is fixedly mounted on the driving rod 6, and two sets of roller cutters 32 are rotatably mounted on the tool holder 31;

[0030] The second tool assembly 4 includes a second tool holder 41 and a toothed cutter 42, wherein the second tool holder 41 is fixedly mounted on the driving rod 6, and two sets of toothed cutters 42 are rotatably mounted on the second tool holder 41;

[0031] The third tool assembly 5 includes a tool holder 3 51 and a scraper 52 , wherein the tool holder 3 51 is fixedly disposed on the driving rod 6 , and two groups of scrapers 52 are fixedly disposed on the tool holder 3 51 .

[0032] It should be noted that the width of the tool storage cavity 21 is three times the width of the tool seat 1 31, the tool seat 2 41 and the tool seat 3 51, that is, when two groups of tools are located in the same tool storage cavity 21, they will be retracted to the two sides of the tool storage cavity 21 respectively, and when one tool is retracted into the tool storage cavity 21, the other tool is located in the middle position of the tool storage cavity 21 and protrudes from the tool storage cavity 21. Therefore, the width of the tool storage cavity 21 is set to three times the width of the tool seat, so that no matter how the two groups of tools are switched, the tool storage cavity 21 can store the two groups of tools.

[0033] During implementation, first, a suitable tool assembly is selected for drilling according to the terrain requirements, that is, when encountering a geological situation with a lot of rocks, the first tool assembly 3 is extended from the tool receiving cavity 21, that is, the rock formation is crushed by the roller 32, and the drilling work is carried out at the same time by the cooperation of the auxiliary tool block 27; when encountering soft strata such as soft soil, clay, silt, etc., the third tool assembly 5 is extended from the tool receiving cavity 21, that is, the scraper 52 and the auxiliary tool block 27 are used to drill; when encountering a gravel layer, a pebble layer or a soft and hard alternating stratum, the second tool assembly 4 is extended from the tool receiving cavity 21, that is, the toothed cutter 42 is used to crush the loose or cemented stratum through impact and tearing; and when encountering complex terrain, the first tool assembly 3, the second tool assembly 4 and the third tool assembly 5 can be selectively switched and combined to adapt to the complex terrain, that is, the drilling work can be completed without stopping the machine to replace the tool.

[0034] In this embodiment, Figure 4 and Figure 5 , guide blocks 61 are fixedly provided at both ends of the driving rod 6, and a guide rod 62 is fixedly provided at the middle part of the driving rod 6;

[0035] Two first guide rails 24 are provided on the upper and lower end surfaces of the partition plate 22 and the tool storage chamber 21. The two guide blocks 61 are respectively slidably arranged along the first guide rails 24 on the upper and lower end surfaces of the tool storage chamber 21. The guide rod 62 is slidably arranged along the first guide rails 24 on the partition plate 22.

[0036] The driving disc 7 is provided with two guide grooves 71;

[0037] The guide rod 62 penetrates the spacer plate 22 and slides along the guide groove 71;

[0038] Two second guide rails 25 are provided on the upper and lower end surfaces of the tool storage cavity 21 and the partition plate 22. The first guide rail 24 and the second guide rail 25 are each composed of a straight groove and an oblique groove, and the length of the oblique groove in the horizontal direction is twice that of the straight groove. The straight groove and the oblique groove in the first guide rail 24 are arranged parallel to the straight groove and the oblique groove in the second guide rail 25 and have the same length.

[0039] It should be noted that when the driving disk 7 rotates, the two sets of tools located in the same tool storage cavity 21 will slide at the same time, that is, the two first tool assemblies 3 fixed on the same driving rod 6 and the two third tool assemblies 5 fixed on the same driving rod 6, or the second tool assembly 4 fixed on the same driving rod 6 and the two third tool assemblies 5 fixed on the same driving rod 6 will slide at the same time, and the slot 211 is located in the middle position of the tool storage cavity 21. When the two sets of tools are switched, the tool needs to slide along the inclined groove until it coincides with the slot 211, that is, slide to the middle position of the tool storage cavity 21 before it can be removed from the slot 211. 11 slides out. In order to prevent the two sets of tools from colliding when sliding, the horizontal length of the inclined groove is set to twice that of the straight groove. This makes it possible that when the tool group located in the slot range slides to the inclined groove range, the tool group located in the inclined groove only slides half the distance, and then the recovered tool group slides along the inclined groove to the edge of the tool storage cavity 21, and the replaced tool group slides along the inclined groove to the center of the tool storage cavity 21. Due to the front and rear position difference between the two sets of tools, the two sets of tools will slide staggered, and the tool group will not be stuck, thereby ensuring that the tool can be switched by rotating only one drive disk 7, making tool switching more convenient and quick.

[0040] In this embodiment, the tool holder 1 31 , the tool holder 2 41 and the tool holder 3 51 are all fixedly provided with a limit block 311 , and the limit block 311 is slidably provided along the second guide rail 25 ;

[0041] Two rectangular stepped slots 211 are provided in the middle of the output surface of the tool storage chamber 21;

[0042] A clamping plate 312 is fixedly provided on each of the tool holder 1 31 , the tool holder 2 41 and the tool holder 3 51 . The clamping plate 312 can be fixedly clamped into the clamping slot 211 .

[0043] During implementation, the driving disc 7 is driven to rotate by the hydraulic telescopic rod 23, thereby causing the guide rod 62 to slide along the guide groove 71. At the same time, the guide rod 62 and the guide block 61 are restricted by the first guide rail 24, so that the driving rod 6 slides along the first guide rail 24, thereby causing the tool assembly located in the slot 211 to be retracted into the tool storage chamber 21. At the same time, the other tool assembly located in the tool storage chamber 21 slides into the slot 211 and is fixedly engaged with the drill bit seat 2, thereby realizing automatic switching of the tools, that is, the drilling work under complex geological conditions can be completed without stopping the machine to manually switch the tools, thereby effectively improving the drilling efficiency. , and in the process of the guide rod 62 and the guide block 61 sliding along the first guide rail 24, the limit block 311 also slides along the second guide rail 25. Since the straight grooves and the oblique grooves in the first guide rail 24 and the second guide rail 25 are arranged in parallel and have the same length, the tool holder 1 31, the tool holder 2 41 and the tool holder 3 51 do not change their own positions when sliding in the tool storage cavity 21, that is, the tool surface is always kept facing the direction of the drill bit holder 2, further ensuring that the tool can smoothly perform the drilling work after switching. At the same time, the tool assembly can be switched only by rotating a driving disk 7, making the switching of the tool faster and more convenient.

[0044] In this embodiment, Figure 4 A center cutter head 26 is fixed at the center position of the drill bit seat 2, and a plurality of auxiliary cutter blocks 27 are fixedly provided on the surface and outer ring of the drill bit seat 2 in a circumferential manner.

[0045] In summary, when the present invention is implemented, by providing a tool storage cavity 21 on the drill bit seat 2, three different types of tool assemblies can be slidably stored in the tool storage cavity 21, that is, the first tool assembly 3 is adapted to rock, the second tool assembly 4 is adapted to gravel, and the third tool assembly 5 is adapted to soft soil. At the same time, the hydraulic telescopic rod 23 is used to drive the driving disc 7 to rotate, and combined with the linkage of the first guide rail 24 and the guide groove 71, the tool switching can be completed by relying on a single rotation of the driving disc 7, thereby greatly reducing the time spent on tool switching, thereby enabling the pipe jacking machine to adapt to a variety of complex geological environments, and The horizontal length of the inclined groove is set to twice the length of the straight groove, so that the two tool assemblies have a phase difference of 50% when sliding and switching, thereby avoiding the phenomenon of tool jamming. In addition, a second guide rail 25 parallel to the first guide rail 24 is additionally provided. Through the sliding of the limit block 311 along the second guide rail 25 and the sliding of the guide rod 62 and the guide block 61 along the first guide rail 24, the position of the tool group assembly will not change during the sliding switching process, that is, it is ensured that the tool surface of the tool assembly can protrude from the drill bit seat 2 for drilling and cooperate with the locking slot 211 to lock, so that the posture of the tool is stable after switching, thereby improving the drilling efficiency of the pipe jacking machine.

[0046] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. Pipe jacking machine for trenchless pipeline construction under complex geological conditions, characterized by: The invention comprises a cylinder (1) and a drill mechanism rotatably connected to the cylinder (1), wherein the drill mechanism comprises a drill seat (2), a first tool assembly (3), a second tool assembly (4), a third tool assembly (5), a drive rod (6) and a drive disk (7), wherein the drill seat (2) is rotatably arranged on the cylinder (1), and four tool storage cavities (21) are circumferentially opened on the drill seat (2), two drive rods (6) are slidably arranged in the tool storage cavities (21), and two drive rods (6) in two of the tool storage cavities (21) located in vertical positions are arranged on the drill seat (2). Two first tool assemblies (3) and a third tool assembly (5) are fixedly provided on the movable rod (6), two second tool assemblies (4) and a third tool assembly (5) are fixedly provided on the two driving rods (6) in the two tool storage chambers (21) in the horizontal direction, a partition plate (22) is fixedly provided in the tool storage chamber (21), a driving disc (7) for driving the driving rod (6) to slide is rotatably provided in the partition plate (22), and a hydraulic telescopic rod (23) is hinged between the driving disc (7) and the partition plate (22); Guide blocks (61) are fixedly provided at both ends of the driving rod (6), and a guide rod (62) is fixedly provided at the middle of the driving rod (6); Two first guide rails (24) are provided on the upper and lower end surfaces of the partition plate (22) and the tool storage cavity (21); the two guide blocks (61) are respectively slidably arranged along the first guide rails (24) on the upper and lower end surfaces of the tool storage cavity (21); and the guide rod (62) is slidably arranged along the first guide rails (24) on the partition plate (22); The driving disc (7) is provided with two guide grooves (71); The guide rod (62) penetrates the partition plate (22) and is slidably arranged along the guide groove (71); Two second guide rails (25) are provided on the upper and lower end surfaces of the tool storage cavity (21) and the partition plate (22); the first guide rail (24) and the second guide rail (25) each consist of a straight groove and an oblique groove, and the length of the oblique groove in the horizontal direction is twice that of the straight groove; the straight groove and the oblique groove in the first guide rail (24) are arranged in parallel with the straight groove and the oblique groove in the second guide rail (25) and have the same length.

2. The pipe jacking machine for trenchless pipeline construction under complex geological conditions according to claim 1, characterized in that: The first tool assembly (3) comprises a tool holder (31) and a roller cutter (32), wherein the tool holder (31) is fixedly arranged on the driving rod (6), and two groups of roller cutters (32) are rotatably arranged on the tool holder (31); The second tool assembly (4) comprises a second tool holder (41) and a toothed cutter (42), wherein the second tool holder (41) is fixedly arranged on the driving rod (6), and two groups of toothed cutters (42) are rotatably arranged on the second tool holder (41); The third tool assembly (5) comprises a tool seat three (51) and a scraper (52), wherein the tool seat three (51) is fixedly arranged on the driving rod (6), and two groups of scrapers (52) are fixedly arranged on the tool seat three (51).

3. The pipe jacking machine for trenchless pipeline construction under complex geological conditions according to claim 2, characterized in that: The tool holder 1 (31), the tool holder 2 (41) and the tool holder 3 (51) are all fixedly provided with a limit block (311) and a clamping plate (312), and the limit block (311) is slidably provided along the second guide rail (25); Two rectangular stepped clamping grooves (211) are provided in the middle of the output surface of the tool storage cavity (21), and the clamping plate (312) can be fixedly clamped into the clamping grooves (211).

4. The pipe jacking machine for trenchless pipeline construction under complex geological conditions according to claim 1, characterized in that: A central cutter head (26) is fixed at the center of the drill bit seat (2), and a plurality of auxiliary cutter blocks (27) are fixedly arranged in a circumferential manner on the surface and outer ring of the drill bit seat (2).

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