Pneumatic spear for pipeline laying

Abstract

The utility model relates to the technical field of pneumatic spears, and discloses a pneumatic spear for pipeline laying, which comprises an impact sleeve, the rear wall of the impact sleeve is fixedly connected with a front joint, the top wall of the front joint is fixedly connected with a cylinder, the tail end of the cylinder is fixedly connected with a rear joint, and the rear joint is fixedly connected with the rear joint. The tail end of the rear connector is fixedly connected with a tail cover, the rear end of the front connector is fixedly connected with an anvil, the rear end of the anvil is fixedly connected with a punch hammer, the rear end of the punch hammer is fixedly connected with a rear-section impact hammer, the bottom wall of the rear-section impact hammer is fixedly connected with a piston, and the bottom wall of the piston is fixedly connected with a shock pad. According to the pneumatic spear, when the pneumatic spear is started, the piston impacts the anvil through compressed air conveyed by the air distribution rod, if pebbles and boulders exist in the front, the starting spear is controlled to move forwards and backwards by rotating the rubber hose connector, the process of operating the pneumatic spear is simplified, and therefore the situation that the manufacturing cost is too high is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic lances, in particular to a pneumatic lance for pipeline laying. Background Technique

[0002] Pipeline laying is a part of municipal engineering. The main purposes of laying pipelines include sewage discharge, rainwater collection, water supply, gas, and cables. It is an essential project in modern urban planning. During the construction process, laying pipelines underground can beautify the urban appearance and also extend the service life of the pipelines.

[0003] Among them, a pneumatic lance can be used for pipeline laying operations. Using a pneumatic lance to achieve trenchless pavement pipe laying can avoid the limitations of the construction environment and the principle of not breaking the exposed ground, and has the characteristics of high pipeline laying efficiency and high safety performance.

[0004] However, on the market, a small drill is used for directional drilling to create a hole for the new pipeline, and then the new pipe is pulled back into the pipeline, which makes the operation of the device difficult, thus increasing the construction time and the equipment usage cost. Therefore, a pneumatic lance for pipeline laying is proposed. Content of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides a pneumatic lance for pipeline laying, aiming to improve the problems of reducing costs and shortening the construction time.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: A pneumatic lance for pipeline laying, including an impact sleeve, the rear wall of the impact sleeve is fixedly connected with a front joint, the top wall of the front joint is fixedly connected with a cylinder, the end of the cylinder is fixedly connected with a rear joint, the end of the rear joint is fixedly connected with a tail cover, the rear end of the front joint is fixedly connected with an anvil, the rear end of the anvil is fixedly connected with a punch hammer, the rear end of the punch hammer is fixedly connected with a rear section impact hammer, the bottom wall of the rear section impact hammer is fixedly connected with a piston, the bottom wall of the piston is fixedly connected with a shock pad, the bottom end of the shock pad is fixedly connected with a gas distribution rod, the outer side of the gas distribution rod is fixedly connected with a plurality of second springs, and the end of the gas distribution rod is fixedly connected with a hose joint.

[0007] As a further description of the above technical solution:

[0008] Both the upper and lower ends of the rear side of the gas distribution rod are fixedly connected with sliding sleeves, and shock-absorbing blocks are fixedly connected to the outer sides of the sliding sleeves.

[0009] As a further description of the above technical solution:

[0010] The end of the gas distribution rod is fixedly connected with a threaded sleeve, and the inner wall size of the threaded sleeve matches the outer wall size of the gas distribution rod.

[0011] As a further description of the above technical solution:

[0012] An elastic stud is arranged in the middle of the inner wall of the impact sleeve, and a first spring is fixedly connected to the bottom end of the inner wall of the front joint.

[0013] As a further description of the above technical solution:

[0014] A Gleitring is fixedly connected to the front end of the piston, and the outer wall of the Gleitring is designed to be smooth.

[0015] As a further description of the above technical solution:

[0016] Sealtex are fixedly connected to both the upper and lower ends of the front side of the anvil, and the Sealtex are symmetrically designed.

[0017] The utility model has the following beneficial effects:

[0018] 1. In the utility model, when the pneumatic spear is started, the piston uses the compressed air conveyed by the air distribution rod to impact the rear impact hammer and the impact hammer on the anvil, thereby driving the pneumatic spear forward, thus reducing the operation difficulty of the equipment and improving the work efficiency. When encountering pebbles and boulders ahead, the forward and backward movement of the starting spear is controlled by rotating the hose joint, reducing the time cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. is a schematic structural diagram of an impact sleeve of a pneumatic spear for pipeline laying proposed by the utility model;

[0020] Figure 2 FIG. is a schematic structural diagram of an impact hammer of a pneumatic spear for pipeline laying proposed by the utility model;

[0021] Figure 3 FIG. is a schematic structural diagram of an air distribution rod of a pneumatic spear for pipeline laying proposed by the utility model;

[0022] LEGEND DESCRIPTION:

[0023] 1. Impact sleeve; 2. Front joint; 3. First spring; 4. Anvil; 5. Impact hammer; 6. Cylinder; 7. Rear impact hammer; 8. Piston; 9. Shock pad; 10. Air distribution rod; 11. Second spring; 12. Slide sleeve; 13. Shock block; 14. Rear joint; 15. Tail cover; 16. Threaded sleeve; 17. Hose joint; 18. Gleitring; 19. Sealtex; 20. Elastic stud. DETAILED DESCRIPTION OF THE INVENTION

[0024] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0025] Referring to Figure 1 、 Figure 2 and Figure 3 ,An embodiment provided by the present invention: A pneumatic lance for pipeline laying, including an impact sleeve 1, the rear wall of the impact sleeve 1 is fixedly connected with a front joint 2, the top wall of the front joint 2 is fixedly connected with a cylinder 6, the end of the cylinder 6 is fixedly connected with a rear joint 14, the end of the rear joint 14 is fixedly connected with a tail cover 15, the rear end of the front joint 2 is fixedly connected with an anvil 4, the rear end of the anvil 4 is fixedly connected with a rammer 5, the rear end of the rammer 5 is fixedly connected with a rear-section impact hammer 7, the bottom wall of the rear-section impact hammer 7 is fixedly connected with a piston 8, the bottom wall of the piston 8 is fixedly connected with a shock pad 9, the bottom end of the shock pad 9 is fixedly connected with an air distribution rod 10, the outer side of the air distribution rod 10 is fixedly connected with a plurality of second springs 11, and the end of the air distribution rod 10 is fixedly connected with a hose joint 17;

[0026] Specifically, the impact sleeve 1 protects the internal parts and prevents the parts from being damaged. The top wall of the front joint 2 is fixedly connected with a cylinder 6, and the cylinder 6 can effectively isolate the internal parts from contacting the outside, avoiding the possible influence on the operation of the pneumatic lance due to soil slag falling into the parts. The end of the rear joint 14 is fixedly connected with a tail cover 15, the rear end of the front joint 2 is fixedly connected with an anvil 4, the rear end of the anvil 4 is fixedly connected with a rammer 5, the rear end of the rammer 5 is fixedly connected with a rear-section impact hammer 7, and the bottom wall of the rear-section impact hammer 7 is fixedly connected with a piston 8. When the piston 8 is started, it drives the rear-section impact hammer 7 to move towards the rammer 5, so that the rammer 5 can always butt against the anvil 4. The bottom wall of the piston 8 is fixedly connected with a shock pad 9, the bottom end of the shock pad 9 is fixedly connected with an air distribution rod 10, and the shock pad 9 can damp the air distribution rod 10 and improve the service life of the machine. The end of the air distribution rod 10 is fixedly connected with a hose joint 17. If there are pebbles and boulders ahead, the hose joint 17 can be twisted to make the pneumatic lance reverse and return.

[0027] Referring to Figure 1 and Figure 3 ,Both the upper and lower ends of the rear side of the air distribution rod 10 are fixedly connected with sliding sleeves 12, the outer sides of the sliding sleeves 12 are fixedly connected with shock-absorbing blocks 13, the end of the air distribution rod 10 is fixedly connected with a wire sleeve 16, the inner wall size of the wire sleeve 16 matches the outer wall size of the air distribution rod 10, an elastic stud 20 is arranged in the middle of the inner wall of the impact sleeve 1, and the bottom end of the inner wall of the front joint 2 is fixedly connected with a first spring 3;

[0028] Specifically, sliding sleeves 12 are fixedly connected to both the upper and lower ends at the rear side of the air distribution rod 10. The sliding sleeves 12 can fix the air distribution rod 10 to prevent the air distribution rod 10 from deviating due to vibration. A wire sleeve 16 is fixedly connected to the end of the air distribution rod 10. The wire sleeve 16 can reduce the pressure on the air distribution rod 10 and improve the service life of the air distribution rod 10.

[0029] Refer to Figure 1 and Figure 2 , a Gleitring 18 is fixedly connected to the front end of the piston 8. The outer wall of the Gleitring 18 is designed to be smooth. At both the upper and lower ends on the front side of the anvil 4, a Step Seal 19 is fixedly connected. The Step Seal 19 is symmetrically designed;

[0030] Specifically, a Gleitring 18 is fixedly connected to the front end of the piston 8. The Gleitring 18 improves the sealing performance of the piston 8 and enhances the performance of the piston 8. At both the upper and lower ends on the front side of the anvil 4, a Step Seal 19 is fixedly connected. The Step Seal 19 prevents compressed air from leaking.

[0031] Working principle: When starting the pneumatic spear, compressed air is delivered to the air distribution rod 10 through the air duct, and then through the air distribution rod 10 to the piston 8 for movement. The piston 8 drives the rear impact hammer 7 and the impact hammer 5 to repeatedly impact the anvil 4, thereby driving the front joint 2 to operate. When encountering pebbles and boulders ahead, close the compressed air delivered in the air distribution rod 10, hold the hose joint 17 and rotate it counterclockwise, that is, the pneumatic spear is in the reverse strike gear position, and the pneumatic spear can be returned to its original position. If you want to restore to the forward gear, hold the hose joint 17 and rotate it clockwise in the air-off state, that is, restore to the forward gear, which simplifies the operation process of the pneumatic spear and improves the efficiency of the pneumatic spear.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A pneumatic lance for pipeline laying, comprising an impact sleeve (1), characterized in that: The rear wall of the impact sleeve (1) is fixedly connected to a front joint (2). The top wall of the front joint (2) is fixedly connected to a cylinder (6). The end of the cylinder (6) is fixedly connected to a rear joint (14). The end of the rear joint (14) is fixedly connected to a tail cover (15). The rear end of the front joint (2) is fixedly connected to an anvil (4). The rear end of the anvil (4) is fixedly connected to a hammer (5). The rear end of the hammer (5) is fixedly connected to a rear-section impact hammer (7). The bottom wall of the rear-section impact hammer (7) is fixedly connected to a piston (8). The bottom wall of the piston (8) is fixedly connected to a shock pad (9). The bottom end of the shock pad (9) is fixedly connected to an air-distribution rod (10). The outer side of the air-distribution rod (10) is fixedly connected to a plurality of second springs (11). The end of the air-distribution rod (10) is fixedly connected to a hose joint (17).

2. The pneumatic lance for pipeline laying according to claim 1, characterized in that: Both the upper and lower ends on the rear side of the air-distribution rod (10) are fixedly connected to sliding sleeves (12). The outer side of the sliding sleeve (12) is fixedly connected to shock-absorbing blocks (13).

3. The pneumatic lance for pipeline laying according to claim 1, characterized in that: The end of the air-distribution rod (10) is fixedly connected to a wire sleeve (16). The inner size of the wire sleeve (16) matches the outer size of the air-distribution rod (10).

4. A pneumatic lance for pipeline laying according to claim 1, characterized in that: A plurality of elastic stud bolts (20) are arranged in the middle of the inner wall of the impact sleeve (1). The bottom end of the inner wall of the front joint (2) is fixedly connected to a first spring (3).

5. The pneumatic lance for pipeline laying according to claim 1, characterized in that: The front end of the piston (8) is fixedly connected to a Gleitring (18). The outer wall of the Gleitring (18) is designed to be smooth.

6. The pneumatic lance for pipeline laying according to claim 1, wherein: Both the upper and lower ends on the front side of the anvil (4) are fixedly connected to a Step seal (19). The Step seal (19) is designed symmetrically.

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