An auxiliary device for underwater steel pipe installation

Abstract

The utility model discloses an underwater steel pipe installation auxiliary device, which relates to the technical field of pipe jacking machines, including a main jacking mechanism and a pipe jacking machine head. The main jacking mechanism also includes a rear backrest and a side frame, a machine head guide rail, and an oil cylinder. The rear backrest and the side frame, the machine head guide rail, and the oil cylinder are respectively fixedly installed on the inner side and the bottom of the starting well. A plurality of oil cylinders are fixedly installed on one side of the rear backrest, and the output ends of the plurality of oil cylinders are fixedly connected with a uniform pressure ring. A rear shell is fixedly installed on one side of the pipe jacking machine head, and a plurality of culverts are movably connected between the rear shell and the uniform pressure ring. Two displacement plates are arranged on the inner side of the pipe jacking machine head, and a plurality of limit wing plates are arranged on one side of the displacement plate and inserted in the through grooves in the installation shell and the pipe jacking machine head. The guide groove arranged on the other side of the displacement plate cooperates with a fixed limit seat to push out and insert the plurality of limit wing plates into the inner side of the hole when the pipe jacking machine head is deflected by force, so as to limit the deflection of the pipe jacking machine head, and reset it in time through the deviation correction system of the pipe jacking machine head itself.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe jacking machines, in particular to an underwater steel pipe installation auxiliary device. Background Art

[0002] The pipe jacking machine is a kind of engineering machinery equipment specially used for trenchless construction. Its core function is to push the pipe or other engineering materials into the preset track or hole underground by relying on the jacking force generated by the hydraulic cylinder or electric motor. This equipment is widely used in municipal construction, drainage engineering, gas and natural gas pipeline installation, power and communication cable laying and other fields;

[0003] When a pipe jacking machine is used to perform pipe jacking operations underground or in a reservoir, when the working torque of the cutter disc is greater than the counter torque generated by friction between the casing and the surrounding soil, the soil blocks the cutter disc and prevents it from rotating, while the casing reverses under the action of the driving force. Therefore, the Chinese utility model patent disclosed by the existing publication number CN201802976U: a pipe jacking machine with retractable anti-deflection wings, the application is symmetrically provided with retractable balance wings on both sides of the head shell of the pipe jacking machine, that is, a counterclockwise rotating torque will be formed through this pair of reverse forces, thereby limiting the rotation of the pipe jacking machine head, and since the two balance wings are directly fixedly mounted on the head shell of the pipe jacking machine at the rear of the cutter disc The two balance wings need to follow the movement of the pipe jacking machine shell and be inserted into the inside of the excavated hole. Although the setting of this structure may help to increase the stability of the equipment in some cases, this design may have some adverse effects on the excavation of the pipe jacking machine during the actual excavation of the hole. First, the balance wings continue to be inserted into the soil layer inside the hole, which may increase the resistance of the pipe jacking machine to move forward. As the pipe jacking machine continues to move forward, the friction between the balance wings and the soil layer will continue to accumulate, resulting in an increase in the demand for jacking force, which may reduce the construction efficiency and even damage the power system of the pipe jacking machine. Secondly, the insertion of the balance wings in the soil layer may destroy the structure of the soil layer, resulting in a decrease in the stability of the soil layer. Utility Model Content

[0004] The purpose of the utility model is to provide an underwater steel pipe installation auxiliary device, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] An underwater steel pipe installation auxiliary device, comprising a main jacking mechanism and a jacking machine head, the main jacking mechanism also comprising a rear backrest and a side frame, a machine head guide rail, and an oil cylinder, the rear backrest and the side frame, the machine head guide rail, and the oil cylinder are respectively fixedly installed on the inner side and the bottom of the starting well, a plurality of oil cylinders are fixedly installed on one side of the rear backrest, and the output ends of the plurality of oil cylinders are fixedly connected with a pressure equalizing ring;

[0007] A rear shell is fixedly installed on one side of the pipe jacking machine head, and a plurality of culverts are movably connected between the rear shell and the pressure equalizing ring. Two mounting shells are fixedly installed on the inner side of the pipe jacking machine head, and displacement plates are movably installed on opposite sides of the two mounting shells. A limiting seat is provided on one side of the displacement plate, and the limiting seat is fixedly installed in the pipe jacking machine head through a mounting frame.

[0008] As a further optimization solution of the utility model, a plurality of through slots are provided in the installation shell, and a plurality of through slots are also provided in the jacking machine head located at the same horizontal position as the through slots in the installation shell.

[0009] As a further optimization scheme of the utility model, three limiting wing plates are fixedly installed on one side of the displacement plate, and a fixing seat is fixedly installed on the side of the displacement plate opposite to the limiting wing plates. A guide groove is opened in the fixing seat, and the longitudinal cross-section of the guide groove is arc-shaped.

[0010] As a further optimization scheme of the utility model, the upper and lower ends of the fixing seat are movably mounted on one side of the mounting shell by bolts respectively, and the bolt sleeve between the mounting shell and the displacement plate is provided with a compression spring, and the limiting wing plate is inserted and installed in two corresponding and horizontally positioned through grooves, a displacement plate is movably installed on one side of the mounting shell, and the limiting wing plate on one side of the displacement plate is inserted and installed in the corresponding through groove, so that the interior of the main top mechanism can be sealed when the limiting wing plate is initially installed.

[0011] As a further optimization solution of the utility model, a connection block is fixedly mounted on one end of the mounting frame, and the other end of the mounting frame is fixedly mounted on the inner side of the culvert at the connection with the rear shell through a fastener.

[0012] As a further optimization scheme of the utility model, an installation groove is opened on one side of the limit seat, and the limit seat is installed on the connecting block through the installation groove and fixed by screws, and the other side of the limit seat is placed in the middle position of the guide groove. By utilizing the setting of the limit seat during fixation, when the jacking machine head deflects, the limit wing plate can be inserted into the soil layer by cooperating with the guide groove, thereby limiting the further deflection of the jacking machine head.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model discloses an underwater steel pipe installation auxiliary device, wherein two displacement plates are arranged on the inner side of a pipe jacking machine head, and a plurality of limit wing plates are arranged on one side of the displacement plates and are inserted and installed in the insertion grooves in the installation shell and the pipe jacking machine head, and the guide grooves arranged on the other side of the displacement plates cooperate with the fixed limit seats to push out the plurality of limit wing plates and insert them into the inner side of the holes when the pipe jacking machine head is deflected by force, thereby limiting the deflection of the pipe jacking machine head and resetting it in time through the deviation correction system of the pipe jacking machine head itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the installation structure of the displacement plate and the limit seat of the utility model;

[0017] Figure 3 This is a schematic diagram of the pipe jacking machine head structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the disassembly of the displacement plate, the limit seat and the mounting frame structure of the utility model.

[0019] In the figure: 1. main jacking mechanism; 2. jacking head; 3. rear shell; 4. culvert; 5. mounting shell; 6. displacement plate; 7. limit seat; 8. mounting frame; 9. through slot; 10. limit wing plate; 11. fixing seat; 12. guide slot; 13. mounting slot; 14. connecting block; 15. rear backrest; 16. side frame; 17. head guide rail; 18. oil cylinder; 19. pressure equalizing ring. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figure 1-Figure 4 As shown, the utility model provides an underwater steel pipe installation auxiliary device, including a main jacking mechanism 1 and a jacking machine head 2, the main jacking mechanism 1 also includes a rear backrest 15 and a side frame 16, a machine head guide rail 17, and an oil cylinder 18, the rear backrest 15 and the side frame 16, the machine head guide rail 17, and the oil cylinder 18 are respectively fixedly installed on the inner side and the bottom of the starting well, a plurality of oil cylinders 18 are fixedly installed on one side of the rear backrest 15, and the output ends of the plurality of oil cylinders 18 are fixedly connected to a pressure equalizing ring 19;

[0022] A rear shell 3 is fixedly installed on one side of the pipe jacking head 2, and a plurality of culverts 4 are movably connected between the rear shell 3 and the pressure equalizing ring 19. Two mounting shells 5 are fixedly installed on the inner side of the pipe jacking head 2, and displacement plates 6 are movably installed on opposite sides of the two mounting shells 5. A limiting seat 7 is provided on one side of the displacement plate 6, and the limiting seat 7 is fixedly installed in the pipe jacking head 2 through a mounting frame 8.

[0023] like Figure 3 As shown, a plurality of through slots 9 are provided in the mounting shell 5, and a plurality of through slots 9 are also provided in the jacking head 2 located at the same level as the through slots 9 in the mounting shell 5;

[0024] like Figure 2-Figure 4As shown, three limiting wing plates 10 are fixedly installed on one side of the displacement plate 6, and a fixing seat 11 is fixedly installed on the side of the displacement plate 6 opposite to the limiting wing plate 10. A guide groove 12 is provided in the fixing seat 11, and the longitudinal cross-section of the guide groove 12 is arc-shaped. The upper and lower ends of the fixing seat 11 are movably installed on one side of the mounting shell 5 by bolts, and the bolt sleeve between the mounting shell 5 and the displacement plate 6 is provided with a compression spring, and the limiting wing plate 10 is inserted and installed in two corresponding and horizontally positioned through grooves 9, and the displacement plate 6 is movably installed on one side of the mounting shell 5, so that the limiting wing plate 10 on one side of the displacement plate 6 is inserted and installed in the corresponding through grooves 9, the interior of the main jacking mechanism 1 can be sealed when the limiting wing plate 10 is initially installed in the position, one end of the mounting frame 8 is fixedly installed with a connecting block 14, and the other end of the mounting frame 8 is fixedly installed on the inner side of the culvert 4 at the connection with the rear shell 3 through a fastener, and a mounting groove 13 is opened on one side of the limiting seat 7. The limiting seat 7 is inserted and installed on the connecting block 14 through the mounting groove 13 and fixed by screws, and the other side of the limiting seat 7 is placed in the middle position in the guide groove 12. By setting the limiting seat 7 when fixed, when the jacking head 2 is deflected, the limiting wing plate 10 can be inserted into the soil layer in cooperation with the guide groove 12, thereby limiting the jacking head 2 from continuing to deflect.

[0025] It should be noted that the utility model is an underwater steel pipe installation auxiliary device. After the main jacking mechanism 1 is hoisted on the machine head guide rail 17, the jacking machine head 2 can be pressurized and screwed into the road soil layer through the oil cylinder 18 and the equalizing ring 19. Then, the oil cylinder 18 drives the equalizing ring 19 to reset, and the culvert 4 can be hoisted on the machine head guide rail 17 in turn and continue to push the jacking machine head 2 into the soil layer through the oil cylinder 18 and the equalizing ring 19. At this time, one end of the two mounting frames 8 can be fixedly installed on the inner side of the culvert 4 connected to the rear shell 3, and one end of the mounting frame 8 is placed in the middle position of the guide groove 12. When the excavation deflects, since the limit seat 7 is in a fixed position, the jacking head 2 will drive the limit wing plate 10 and the displacement plate 6 to rotate synchronously through the mounting shell 5, so the displacement plate 6 drives the fixed seat 11 on one side to rotate, and uses the arc setting of the guide groove 12 on one side of the fixed seat 11 to make the displacement plate 6 move toward the side of the mounting shell 5, and make the displacement plate 6 synchronously drive one end of the three limit wing plates 10 to pass through the corresponding through grooves 9 and insert into the road soil layer, thereby timely limiting the jacking head 2 from continuing to deflect. At this time, it brings a good prerequisite for the correction work of the correction system of the jacking head 2.

[0026] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An underwater steel pipe installation auxiliary device, characterized in that: The invention comprises a main jacking mechanism (1) and a jacking machine head (2); the main jacking mechanism (1) further comprises a rear backrest (15), a side frame (16), a machine head guide rail (17), and an oil cylinder (18); the rear backrest (15), the side frame (16), the machine head guide rail (17), and the oil cylinder (18) are respectively fixedly installed on the inner side and the bottom of the starting well; a plurality of oil cylinders (18) are fixedly installed on one side of the rear backrest (15); and output ends of the plurality of oil cylinders (18) are fixedly connected to a pressure equalizing ring (19); A rear shell (3) is fixedly mounted on one side of the pipe jacking machine head (2); a plurality of culverts (4) are movably connected between the rear shell (3) and the pressure equalizing ring (19); two mounting shells (5) are fixedly mounted on the inner side of the pipe jacking machine head (2); displacement plates (6) are movably mounted on opposite sides of the two mounting shells (5); a limiting seat (7) is provided on one side of the displacement plate (6); and the limiting seat (7) is fixedly mounted in the pipe jacking machine head (2) via a mounting frame (8).

2. The underwater steel pipe installation auxiliary device according to claim 1, characterized in that: The installation shell (5) is provided with a plurality of through slots (9), and the pipe jacking machine head (2) located at the same horizontal position as the through slots (9) in the installation shell (5) is also provided with a plurality of through slots (9).

3. The underwater steel pipe installation auxiliary device according to claim 2, characterized in that: Three limiting wing plates (10) are fixedly mounted on one side of the displacement plate (6), and a fixing seat (11) is fixedly mounted on the side of the displacement plate (6) opposite to the limiting wing plates (10). A guide groove (12) is provided in the fixing seat (11), and the longitudinal cross section of the guide groove (12) is arc-shaped.

4. The underwater steel pipe installation auxiliary device according to claim 3 is characterized in that: The upper end and the lower end of the fixing seat (11) are movably mounted on one side of the mounting shell (5) by means of bolts, and the bolt sleeve between the mounting shell (5) and the displacement plate (6) is provided with a compression spring, while the limiting wing plate (10) is inserted and installed in two corresponding through slots (9) at the same horizontal position.

5. The underwater steel pipe installation auxiliary device according to claim 4, characterized in that: A connection block (14) is fixedly mounted on one end of the mounting frame (8), and the other end of the mounting frame (8) is fixedly mounted on the inner side of the culvert (4) at the connection with the rear shell (3) via a fastener.

6. The underwater steel pipe installation auxiliary device according to claim 5, characterized in that: A mounting groove (13) is provided on one side of the limit seat (7), and the limit seat (7) is installed on the connecting block (14) through the mounting groove (13) and fixed by screws, and the other side of the limit seat (7) is placed in the middle position of the guide groove (12).

Images