New fast - exhaust pneumatic pin - punching device

Abstract

The novel quick-exhaust pneumatic pin puncher device disclosed by the present invention comprises a main body structure, a motion structure and a quick-exhaust structure; the main body structure includes an air storage cylinder, one end of the air storage cylinder is provided with a cylinder block, and an end cover is arranged at the end of the cylinder block far away from the air storage cylinder. The air storage cylinder, the cylinder block and the end cover are connected by stud bolts, and the end cover is threadedly connected with a sleeve; the motion structure includes a piston that slides relatively in the cylinder block, a piston rod is connected along the direction of the sleeve to the piston, and a hammer head is connected to the end of the piston rod far away from the piston; the quick-exhaust structure includes a front cover, a motion hole is axially opened at the center of the front cover, the piston rod passes through the motion hole, and an exhaust plug is inserted through the position corresponding to the motion hole between the piston rod and the front cover. A sealing gasket a is arranged at the contact part between the exhaust plug and the front cover. By means of the novel gas quick-exhaust mechanism, the present invention improves the impact force of the pneumatic pin puncher device, and has outstanding effects in saving the installation and disassembly time of the drilling rig, reducing the manual operation intensity of the pin installation and disassembly, and adapting to the pin diameter range.

Description

Technical Field

[0001] The present invention belongs to the technical field of oil machinery devices, and particularly relates to a new type of quick-exhaust pneumatic pin driver device. Background Art

[0002] In the support structure of an oil drilling rig, the connection structure between components mainly adopts the form of a pin and an ear plate. During the installation and relocation operations of the drilling rig, at present, the method of manually using tools such as a hammer and a drift hammer to strike the pin is still used to complete the installation and disassembly of the pin. When using this manual method, when it is difficult to install or disassemble the pin due to manufacturing errors or other reasons of each component's ear plate, there will be a disadvantage of insufficient hammer head impact force, and the installation is time-consuming and laborious, with a large manual labor intensity, affecting the moving and installation period of the drilling rig. Summary of the Invention

[0003] The purpose of the present invention is to provide a new type of quick-exhaust pneumatic pin driver device, which can achieve a greater impact force and is suitable for the quick disassembly and assembly of pins with a larger diameter.

[0004] The technical solution adopted by the present invention is that the new type of quick-exhaust pneumatic pin driver device includes a main body structure, a motion structure, and a quick-exhaust structure; the main body structure includes an accumulator cylinder, one end of the accumulator cylinder is provided with a cylinder block, the end of the cylinder block away from the accumulator cylinder is provided with an end cover, the accumulator cylinder, the cylinder block, and the end cover are connected by studs, and the end cover is threadedly connected with a sleeve; the motion structure includes a piston disposed in the cylinder block, the piston is connected with a piston rod along the longitudinal direction of the sleeve by a thread, and one end of the piston rod away from the piston is threadedly connected with a hammer head; the quick-exhaust structure includes a front cover, a motion hole is axially opened in the center of the front cover, the piston rod passes through the motion hole, and an exhaust plug is penetrated between the piston rod and the front cover at a position corresponding to the motion hole, and a sealing gasket a is provided at the contact part between the exhaust plug and the front cover, and the front cover is disposed between the cylinder block and the end cover.

[0005] The features of the present invention further lie in that

[0006] A sealing gasket b is provided between the front cover and the end cover.

[0007] A spray port is opened at one end of the cylinder block connected to the accumulator cylinder, and an air hole b is radially opened on the side wall of the cylinder block near the accumulator cylinder.

[0008] The spray port is in a horn shape, and the inner diameter of the spray port decreases from large to small along the direction from the accumulator cylinder to the cylinder block.

[0009] An air hole a is axially opened at the end of the accumulator cylinder away from the cylinder block,

[0010] Both ends of the stud are fixed by nuts, and a lock washer is provided between the nut and the stud.

[0011] An air hole d is radially formed in the outer wall of the front cover near the cylinder block, and an air hole e is formed in the front cover in a direction perpendicular to the air hole d. The air hole d communicates with the air hole e. Relative exhaust holes are radially arranged on the outer wall of the front cover near the end cover, and the air hole d is on the same side as the air hole b. Through holes are axially formed on both sides of the moving hole of the front cover and on the side opposite to the air hole d.

[0012] An air hole c is axially formed in the end cover, and the air hole c is on the same side as the air hole b.

[0013] The beneficial effects of the present invention are as follows:

[0014] (1) By adopting lightweight materials, the present invention reduces the weight of the pneumatic pin punch device and realizes the light weight of the pin punch.

[0015] (2) Through the new type of gas quick exhaust mechanism, the present invention improves the impact force of the pneumatic pin punch device.

[0016] (3) The present invention has outstanding effects in saving the installation and disassembly time of the drilling rig, reducing the manual operation intensity of pin installation and disassembly, and adapting to the pin diameter range. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of a new type of quick exhaust pneumatic pin punch device;

[0018] Figure 2 It is a cross-sectional view of a new type of quick exhaust pneumatic pin punch device;

[0019] Figure 3 It is a cross-sectional view of the front cover in a new type of quick exhaust pneumatic pin punch device;

[0020] Figure 4 It is an enlarged view of the quick exhaust structure in a new type of quick exhaust pneumatic pin punch device;

[0021] Figure 5 It is the control schematic diagram of a new type of quick exhaust pneumatic pin punch device

[0022] In the figure, 1. accumulator cylinder, 2. cylinder block, 3. piston, 4. piston rod, 5. front cover, 6. gasket a, 7. exhaust plug, 8. gasket b, 9. end cover, 10. sleeve, 11. hammer head, 12. stud, 13. lock washer, 14. nut, 15. air source, 16. ball valve, 17. push button switch, 18. five-way pneumatic control valve, 19. one-way throttle valve, 20. nozzle, 21. through hole, 22. air hole a, 23. air hole b, 24. air hole c, 25. exhaust hole, 26. air hole d, 27. channel a, 28. channel b, 29. channel c, 30. control port, 31. air hole e. Detailed Embodiments

[0023] The present invention will be described in detail below in conjunction with the drawings and specific embodiments.

[0024] The structure of the new type of quick - exhaust pneumatic pin - punching device is as Figure 1 shown, including a main body structure, a motion structure, and a quick - exhaust structure. The main body structure and the quick - exhaust structure are connected as a whole through a stud 12. Both ends of the stud 12 are fixed and tightened by nuts 14, and a lock washer 13 is arranged between the nut 14 and the stud 12;

[0025] As Figure 2 shown, the main body structure includes an air storage cylinder 1. One end of the air storage cylinder 1 is provided with a cylinder block 2. An air hole a22 is axially opened at the end of the air storage cylinder 1 far from the cylinder block 2. One end of the cylinder block 2 far from the air storage cylinder 1 is provided with an end cover 9. A spray port 20 is opened at the end of the cylinder block 2 connected to the air storage cylinder 1. The cross - section of the spray port 20 is in a horn shape, and the inner diameter of the spray port 20 decreases from large to small along the direction from the air storage cylinder 1 to the cylinder block 2; An air hole b23 is radially opened on the side wall of the cylinder block 2 near the air storage cylinder 1. The air storage cylinder 1, the cylinder block 2, and the end cover 9 are connected through a stud 12. The end cover 9 is threadedly connected with a sleeve 10;

[0026] The motion structure includes a piston 3 that slides relatively in the cylinder block 2. The piston 3 is connected to a piston rod 4 along the direction of the sleeve 10 through a thread. The piston rod 4 and the piston 3 are also fixed by nuts and bolts. One end of the piston rod 4 far from the piston 3 is connected with a hammer head 11 through an internal thread, and the hammer head 11 is located outside the sleeve 10;

[0027] The quick - exhaust structure includes a front cover 5. A motion hole is axially opened at the center of the front cover 5. The piston rod 4 passes through the motion hole. An exhaust plug 7 passes through the gap between the piston rod 4 and the front cover 5. A sealing gasket a6 is arranged at the contact parts of the exhaust plug 7 with the front cover 5 and the piston rod 4. The front cover 5 is arranged between the cylinder block 2 and the end cover 9, and a sealing gasket b8 is arranged between the front cover 5 and the end cover 9.

[0028] As Figure 3 shown, an air hole d26 is radially opened on the outer side wall of the front cover 5 near the cylinder block 2. An air hole e31 is opened on the front cover 5 in a direction perpendicular to the air hole d26. The air hole d26 is communicated with the air hole e31. Relative exhaust holes 25 are radially arranged on the outer side wall of the front cover 5 near the end cover 9. The air hole d26 and the air hole b23 are on the same side; Through holes 21 are axially opened on both sides of the motion hole of the front cover 5 and on the side opposite to the air hole d26. An air hole c24 is axially opened on the end cover 9. The air hole c24 and the air hole b23 are on the same side.

[0029] As Figure 4 shown, through holes 21 are axially opened on both sides of the motion hole of the front cover 5 and on the side opposite to the air hole d26. Studs 12 are arranged at all four corners of the front cover 5.

[0030] As Figure 5As shown in the figure, the present invention is provided with an air source 15. The air source 15 is connected in parallel with a five-way pneumatic control valve 18 through two pipelines. A ball valve 16 is provided on the pipeline. A push button switch 17 is provided on one of the pipelines. A channel a27 is provided inside the push button switch 17. A control port 30 is provided at the connection position between the push button switch 17 and the five-way pneumatic control valve 18. A channel b28 and a channel c29 are provided inside the five-way pneumatic control valve 18. The channel b28 is directly connected to the air hole a through a pipeline. The channel c29 is connected to the air hole c24 and the air hole d26 respectively through pipelines. A one-way throttle valve 19 is provided on the pipeline connected to the air hole d26.

[0031] The working mode of a new type of quick exhaust pneumatic pin punch of the present invention is as follows:

[0032] When the pin is not disassembled or assembled, the ball valve 16 can be operated to conduct the air source 15. The air source 15 first enters the air hole c24 of the pneumatic pin punch after passing through the channel c29 of the five-way pneumatic control valve 18, so that the exhaust plug 7 moves towards the front cover 5 until the exhaust plug 7 abuts against the front cover 5, thereby blocking the exhaust hole 25. By adjusting the opening degree of the one-way throttle valve 19, after the exhaust plug 7 abuts against the front cover 5, the air source 15 then enters the air hole d26 through the one-way throttle valve 19, so that the piston 3 drives the piston rod 4 to move towards the accumulator cylinder 1 until it contacts and presses the nozzle 20, and the excess gas is discharged from the air hole b23 on the cylinder block 2, completing the return stroke of the cylinder.

[0033] When the pin is disassembled or assembled, first contact the sleeve 10 with the end face of the pin. The sleeve 10 plays a positioning role to ensure that the impact work is the largest when the hammer head 11 in the moving mechanism hits the pin each time. Operate the push button switch 17 to make the channel a27 of the push button switch 17 conduct the air source 15 to control the control port 30 of the five-way pneumatic control valve 18, thereby controlling the five-way pneumatic control valve 18 to change direction, so that the channel b28 of the five-way pneumatic control valve 18 conducts the air source 15, thereby making the air hole a22 ventilated. At the same time, the channel c29 of the five-way pneumatic control valve 18 disconnects the air source 15, and the air holes d26 and c24 on the pneumatic pin punch exhaust. As the gas enters the accumulator cylinder 1, a pressure difference is formed between the accumulator cylinder 1 and the rod cavity. When the pressure difference reaches the set value, the gas pressure pushes the piston 3 in the moving mechanism towards the front cover 5; when the piston 3 leaves the nozzle 20 at the front end of the cylinder block 2 for an instant, the air pressure in the accumulator cylinder 1 is instantly released to the end face of the piston 3, so that the moving mechanism obtains a thrust, thereby pushing the hammer head 11 in the moving mechanism to hit the pin.

[0034] During the process of the moving mechanism hitting the pin, the air pressure in the rod cavity gradually increases, and a pressure difference is formed again between the pressure in the rod cavity and the exhaust plug 7 and the end cover 9, prompting a relative sliding between the exhaust plug 7 and the front cover 5. At this time, part of the air pressure in the rod cavity is discharged into the cavity between the exhaust plug 7 and the front cover 5 through the through hole 21 on the front cover 5 and is discharged into the atmosphere through the exhaust hole 25 on the front cover 5, thereby realizing the rapid discharge of the gas in the rod cavity and increasing the impact force of the hammer head.

[0035] The present invention adopts lightweight materials to reduce the weight of the pneumatic pin punch device and achieve the light weight of the pin punch. Through a new type of gas quick exhaust mechanism, the impact force of the pneumatic pin punch device is improved, and it has outstanding effects in saving the installation and disassembly time of the drilling rig, reducing the manual operation intensity of pin installation and disassembly, and adapting to the pin diameter range.

Claims

1. A new type of quick-exhaust pneumatic pin punch device, characterized in that, It includes a main body structure, a moving structure and a quick exhaust structure; The main body structure includes an air storage cylinder (1). One end of the air storage cylinder (1) is provided with a cylinder block (2). One end of the cylinder block (2) far from the air storage cylinder (1) is provided with an end cover (9). The air storage cylinder (1), the cylinder block (2) and the end cover (9) are connected by stud bolts (12). The end cover (9) is threadedly connected with a sleeve (10); The moving structure includes a piston (3) arranged in the cylinder block (2). The piston (3) is threadedly connected with a piston rod (4) along the direction of the sleeve (10). One end of the piston rod (4) far from the piston (3) is threadedly connected with a hammer head (11); The quick exhaust structure includes a front cover (5). A moving hole is axially opened in the center of the front cover (5). The piston rod (4) passes through the moving hole. An exhaust plug (7) is inserted through the piston rod (4) and the front cover (5) at a position corresponding to the moving hole. A sealing gasket a (6) is arranged at the contact part between the exhaust plug (7) and the front cover (5). The front cover (5) is arranged between the cylinder block (2) and the end cover (9); A gas hole d (26) is radially opened on the outer side wall of the front cover (5) near the cylinder block (2). A gas hole e (31) is opened on the front cover (5) in a direction perpendicular to the gas hole d (26). The gas hole d (26) is communicated with the gas hole e (31); A relative exhaust hole (25) is radially arranged on the outer side wall of the front cover (5) near the end cover (9). The gas hole d (26) is on the same side as the gas hole b (23); Through holes (21) are axially opened on both sides of the moving hole of the front cover (5) and on the side opposite to the gas hole d (26); An air hole c (24) is axially opened on the end cover (9). The air hole c (24) is on the same side as the air hole b (23); A spray port (20) is opened at the end of the cylinder block (2) connected to the air storage cylinder (1). A gas hole b (23) is radially opened on the side wall of the cylinder block (2) near the air storage cylinder (1); 2. The new type of quick-exhaust pneumatic pin punch device according to claim 1, characterized in that, A sealing gasket b (8) is arranged between the front cover (5) and the end cover (9); 3. The new type of quick-exhaust pneumatic pin punch device according to claim 1, characterized in that, The spray port (20) is in a horn shape. The inner diameter of the spray port (20) decreases from large to small along the direction from the air storage cylinder (1) to the cylinder block (2); 4. The new type of quick-exhaust pneumatic pin punch device according to claim 1, characterized in that, An air hole a (22) is axially opened at the end of the air storage cylinder (1) far from the cylinder block (2); 5. The new type of quick-exhaust pneumatic pin punch device according to claim 1, characterized in that, Both ends of the stud bolt (12) are fixed by nuts (14). A lock washer (13) is arranged between the nut (14) and the stud bolt (12);

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