An oilfield drilling rotary table drive box

Abstract

The present invention provides a new type of oilfield drilling rotary table transmission box, comprising: an output shaft; the brake disc connecting sleeve is arranged on one side of the output shaft; the other side of the brake disc connecting sleeve is fixedly installed with an output shaft universal joint connecting disc through bolts. The present invention provides a new type of oilfield drilling rotary table transmission box. The braking adopts a disc device, and the braking torque can be adjusted. It is directly installed on the brake disc connecting sleeve at the rear end of the output shaft, shortening the transmission path of the braking torque and improving the mechanical transmission efficiency. This device has functions such as transmission clutch function, forward and reverse steering switching function, and braking function, with complete functions, reasonable structure, compact appearance, convenient installation, and space saving. In the disc clutch device, an airbag is used to replace the previous cylinder piston to push the friction plate for clutch, simplifying the production and installation process, reducing the processing difficulty, and lowering the production cost.

Description

Technical Field

[0001] The present invention relates to the field of oilfield drilling, and particularly to an oilfield drilling rotary table transmission box. Background Art

[0002] A vehicle-mounted drilling rig is a relatively new loading form of drilling machinery and equipment. It integrates the main drilling equipment and drill tools on one vehicle, and usually conducts drilling operations on the vehicle.

[0003] Most oil extraction sites are located in plateau, desert, wetland, swamp and water surface areas. Due to geographical environment reasons, it is required that the input shaft mechanism and output shaft mechanism of the vehicle-mounted drilling rig rotary table transmission box are located in different boxes to achieve power transmission. If the input shaft mechanism and output shaft mechanism adopt a split-box design, it is difficult to ensure the oil seal of the rotary table transmission box.

[0004] Currently, the traditional rotary table transmission box with both the input shaft mechanism and the output shaft mechanism located in the same side box is still used. However, when using the traditional rotary table angle transmission box for exploitation, the braking torque cannot be adjusted, reducing the mechanical transmission efficiency.

[0005] Therefore, it is necessary to provide an oilfield drilling rotary table transmission box to solve the above technical problems. Summary of the Invention

[0006] The present invention provides an oilfield drilling rotary table transmission box, which solves the problem that the braking torque cannot be adjusted, reducing the mechanical transmission efficiency.

[0007] To solve the above technical problems, an oilfield drilling rotary table transmission box provided by the present invention includes: an output shaft;

[0008] A brake disc connection sleeve, which is arranged on one side of the output shaft; on the other side of the brake disc connection sleeve, an output shaft universal joint connection disc is fixedly installed by bolts;

[0009] A brake device fixed support seat, which is fixedly installed on the other side of the output shaft universal joint connection disc, the universal joint connection disc;

[0010] A brake block sliding device, which is arranged on the top of the outer surface of the rotating disc connection sleeve. An air-operated brake disc is arranged inside the brake block sliding device, and brake friction blocks are arranged on both sides of the air-operated brake disc. An air bag of the brake block sliding device is arranged on one side of the brake block sliding device.

[0011] Preferably, the top of the output shaft is threadedly engaged with an input shaft through an arc bevel gear.

[0012] Preferably, an input sprocket is arranged on the top of the input shaft.

[0013] Preferably, a disc clutch device is provided on the top of the input sprocket.

[0014] Preferably, a cooling shell is provided on the outer surface of the output shaft, and a base is fixedly installed at the bottom of the cooling shell.

[0015] Preferably, a cooling cavity is provided inside the cooling shell, and cooling pipes are provided on the inner surface of the cooling cavity.

[0016] Preferably, heat conducting plates are fixedly connected to the outer surface of the cooling pipes.

[0017] Preferably, heat dissipation blocks are provided on the other side of the heat conducting plates.

[0018] Preferably, a connecting pipe is sleeved on the outer surface of the output shaft. Disassembly devices are fixedly installed at both the top and bottom of the outer surface of the output shaft. Setting grooves are provided on the front surfaces at the top and bottom of the output shaft. Communication grooves are provided at both the top and bottom of the outer surface of the connecting pipe. A first spring is fixedly installed inside the setting groove, and the top end of the first spring is fixedly connected to a spring block.

[0019] Preferably, the disassembly device includes a fixed block. An installation cavity is provided inside the fixed block. A sliding rod is fixedly installed in the middle of the bottom of the inner cavity of the installation cavity. A moving rod is sleeved on the outer surface of the sliding rod. The top end of the moving rod is fixedly connected to a second spring. A moving groove is provided on one side of the installation cavity.

[0020] Compared with the related art, a kind of oilfield drilling rotary table transmission box provided by the present invention has the following beneficial effects:

[0021] The present invention provides an oilfield drilling rotary table transmission box. The brake adopts a disc device, and the braking torque can be adjusted. It is directly installed on the brake disc connection sleeve at the rear end of the output shaft, shortening the transmission path of the braking torque and improving the mechanical transmission efficiency. This device has functions such as transmission clutch function, forward and reverse rotation switching function, and brake function. It has complete functions, reasonable structure, compact appearance, convenient installation, saves space. In the disc clutch device, an airbag is used to replace the previous cylinder piston to push the friction plate for clutch, simplifying the production and installation process, reducing the processing difficulty, and lowering the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of a first embodiment of an oilfield drilling rotary table transmission box provided by the present invention;

[0023] Figure 2 is Figure 1 the enlarged schematic view of part A shown in

[0024] Figure 3 Schematic structural diagram of the second embodiment of the oilfield drilling rotary table transmission box provided by the present invention;

[0025] Figure 4 For Figure 3 Schematic diagram of the internal structure of the cooling shell shown;

[0026] Figure 5 Schematic structural diagram of the third embodiment of the oilfield drilling rotary table transmission box provided by the present invention;

[0027] Figure 6 For Figure 5 Cross-sectional view of the connecting pipe shown;

[0028] Figure 7 For Figure 6 Schematic structural diagram of the disassembly device shown.

[0029] Reference numerals in the figure: 1. Output shaft, 2. Input shaft, 3. Input sprocket, 4. Disc clutch device, 5. Brake disc connection sleeve, 6. Brake friction block, 7. Brake block sliding device, 8. Brake block sliding device air bag, 9. Brake device fixed support seat, 10. Output shaft universal joint connection disc, 11. Pneumatic brake disc, 12. Injection hole, 13. Cooling shell, 14. Base, 15. Cooling box, 16. Cooling pipe, 17. Heat conduction plate, 18. Heat dissipation block, 19. Connecting pipe, 20. Disassembly device, 201. Fixed block, 202. Installation cavity, 203. Slide bar, 204. Second spring, 205. Moving rod, 206. Moving groove, 21. Setting groove, 22. First spring, 23. Elastic block, 24. Communication groove. Detailed implementation manners

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0031] Please refer to Figure 1 and Figure 2 , wherein, Figure 1 Schematic structural diagram of the first embodiment of the oilfield drilling rotary table transmission box provided by the present invention; Figure 2 For Figure 1 Enlarged schematic diagram of part A shown. An oilfield drilling rotary table transmission box includes: an output shaft 1;

[0032] A brake disc connection sleeve 5, the brake disc connection sleeve 5 is arranged on one side of the output shaft 1; the other side of the brake disc connection sleeve 5 is fixedly installed with an output shaft universal joint connection disc 10 through bolts;

[0033] A brake device fixed support seat 9, the brake device fixed support seat 9 is fixedly installed on the other side of the output shaft universal joint connection disc 10, the universal joint connection disc 10;

[0034] A brake shoe sliding device 7 is arranged at the top of the outer surface of the rotating disk connecting sleeve 5, a pneumatic brake disc 11 is arranged inside the brake shoe sliding device 7, brake friction blocks 6 are arranged on both sides of the pneumatic brake disc 11, and a brake shoe sliding device air bag 8 is arranged on one side of the brake shoe sliding device 7.

[0035] The top of the output shaft 1 is threadably engaged with the input shaft 2 via an arc-shaped bevel gear.

[0036] An inner gear ring is arranged inside the disc clutch device 4. The inner gear ring drives the gear on the surface of the input shaft 2 to rotate through the meshing of the gear blocks. The gear on the surface of the input shaft 2 then drives the input shaft 2 to rotate through the flat key.

[0037] The input shaft 2 drives the output shaft 1 to rotate through the meshing of the arc bevel gears in the gear box, and the spline sleeve of the output shaft 1 slides left and right through the push-pull handle and the shift fork, thereby realizing the forward and reverse rotation of the output shaft 1.

[0038] An input sprocket 3 is disposed on the top of the input shaft 2 .

[0039] An oil filling hole 12 is provided on the front surface of the input shaft 2 to add lubricating oil to the inside.

[0040] The input sprocket 3 starts to rotate driven by the chain on the outer surface.

[0041] A disc clutch device 4 is arranged on the top of the input sprocket 3 .

[0042] An outer gear ring is arranged on the outer surface of the disc clutch device 4 .

[0043] The input sprocket 3 starts to rotate under the drive of the chain, thereby driving the outer gear ring of the disc clutch device 4 to rotate.

[0044] In the disc clutch device 4, an air bag is used to replace the conventional cylinder piston to drive the friction plate clutch, which simplifies the production and installation process and reduces the processing difficulty.

[0045] When inflated, the airbag swells up and squeezes the friction plates on the outer surface. The friction plates tighten, causing the outer gear ring to drive the inner gear ring to rotate. If the airbag is in a non-inflated state, the inner gear ring will not rotate.

[0046] A cooling shell 13 is disposed on the outer surface of the output shaft 1 , and a base 14 is fixedly mounted on the bottom of the cooling shell 13 .

[0047] A cooling cavity 15 is disposed inside the cooling shell 13 , and a cooling pipe 16 is disposed on the inner surface of the cooling cavity 15 .

[0048] A heat conducting plate 17 is fixedly connected to the outer surface of the cooling tube 16 .

[0049] A heat dissipation block 18 is disposed on the other side of the heat conducting plate 17 .

[0050] The working principle of an oilfield drilling rotary table transmission box provided by the present invention is as follows:

[0051] First, driven by the chain, the input sprocket 3 starts to rotate, thereby driving the outer gear ring of the disc clutch device 4 to rotate. Then, when inflated, the airbag arranged inside the disc clutch device 4 is inflated, which will push the friction plates inside the disc clutch device 4 to tighten, so that the outer gear ring drives the inner gear ring to rotate. If the airbag is in a non-inflated state, the inner gear ring will not rotate.

[0052] The inner gear ring drives the input shaft 2 surface gear to rotate through the tooth meshing, and the input shaft 2 surface gear drives the input shaft 2 to rotate through the flat key. Then, the input shaft 2 drives the output shaft 1 to rotate through the arc bevel gear thread meshing in the gear box.

[0053] Furthermore, by pushing and pulling the handle, the shift fork drives the spline sleeve of the output shaft 1 to slide left and right, thereby realizing the forward and reverse rotation of the output shaft 1.

[0054] At the right outer end of the output shaft 1, a connecting sleeve 5 with an additional pneumatic disc brake device is installed, and a universal joint connecting disc 10 is installed at the right end of the connecting sleeve 5. The power of the input sprocket 3 is transmitted to the large turntable at the wellhead through the universal joint, thereby realizing the rotation of the turntable.

[0055] Compared with the related art, the oilfield drilling rotary table transmission box provided by the present invention has the following beneficial effects:

[0056] The present invention provides an oilfield drilling turntable transmission box, wherein the brake adopts a disc device, the braking torque is adjustable, and the device is directly mounted on the brake disc connecting sleeve 5 at the rear end of the output shaft 1, thereby shortening the braking torque transmission path and improving the mechanical transmission efficiency. The device has transmission clutch function, forward and reverse steering switching function, brake function and other devices, has complete functions, reasonable structure, compact appearance, convenient installation and space saving. In the disc clutch device 4, an air bag is adopted to replace the previous cylinder piston to push the friction plate clutch, thereby simplifying the production and installation process, reducing the processing difficulty and reducing the production cost.

[0057] Second embodiment

[0058] Please refer to Figure 3 and Figure 4 Based on the oilfield drilling rotary transmission box provided by the first embodiment of the present application, the second embodiment of the present application proposes another oilfield drilling rotary transmission box. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0059] Specifically, the difference of a kind of oilfield drilling rotary table transmission box provided by the second embodiment of the present application lies in that it is an oilfield drilling rotary table transmission box, and a cooling shell 13 is arranged on the outer surface of the output shaft 1, and a base 14 is fixedly installed at the bottom of the cooling shell 13.

[0060] A cooling cavity 15 is arranged inside the cooling shell 13, and a cooling pipe 16 is arranged on the inner surface of the cooling cavity 15.

[0061] The cooling pipe 16 is arranged on the inner surface inside the cooling shell 13.

[0062] A heat conduction plate 17 is fixedly connected to the outer surface of the cooling pipe 16.

[0063] The heat conduction plate 17 is arranged in a plate shape that fits the cooling cavity 15, and has a large contact area with the cooling cavity 15, and can quickly transfer a large amount of heat.

[0064] On the other side of the heat conduction plate 17, there is a heat dissipation block 18.

[0065] A plurality of heat dissipation blocks 18 are arranged and connected to the surface of the gearbox, and can quickly absorb the internal heat.

[0066] The working principle of an oilfield drilling rotary table transmission box provided by the present invention is as follows:

[0067] During operation, first, coolant is added to the cooling cavity 15 inside the cooling shell 13 through the connection port. When the output shaft 1 starts to rotate, the heat generated by the high-speed movement of the internal output shaft 1, gears and other parts is absorbed by the heat dissipation block 18, and the heat conduction plate 17 quickly conducts the heat into the cooling cavity 15 and is absorbed by the condensate, forming temperature reduction.

[0068] Compared with the related technology, an oilfield drilling rotary table transmission box provided by the present invention has the following beneficial effects:

[0069] The present invention provides an oilfield drilling rotary table transmission box. By arranging a cooling shell 13 on the outer surface of the gearbox of the output shaft 1, when the output shaft 1 rotates for a long time and the heat generated by gear friction will wear and consume the gears and the output shaft, the heat dissipation block 18 inside the cooling shell 13 conducts away the hot air and transfers it into the cooling cavity 15, thereby reducing the heat on the surface of the output shaft 1, enabling the output shaft 1 to work for a long time without being easily worn, and reducing the loss of internal parts.

[0070] Third Embodiment

[0071] Please refer to Figure 5 、 Figure 6 and Figure 7, based on an oilfield drilling rotary table transmission box provided by the first embodiment of the present application, another oilfield drilling rotary table transmission box is proposed in the third embodiment of the present application. The third embodiment is only the preferred manner of the first embodiment, and the implementation of the third embodiment will not affect the independent implementation of the first embodiment.

[0072] Specifically, the difference of an oilfield drilling rotary table transmission box provided by the third embodiment of the present application is that for an oilfield drilling rotary table transmission box, a connecting pipe 19 is sleeved on the outer surface of the output shaft 1, and disassembly devices 20 are fixedly installed at both the top and bottom of the outer surface of the output shaft 1. Setting grooves 21 are provided on the front surfaces of the top and bottom of the output shaft 1. Communication grooves 24 are provided on both the top and bottom of the outer surface of the connecting pipe 19. A first spring 21 is fixedly installed inside the setting groove 21, and the top end of the first spring 21 is fixedly connected to a spring block 23.

[0073] The surface of the spring block 23 and the first spring 21 facing each other is set to be arc-shaped. When the first spring 22 is not subject to external force, the spring block 23 extends out of the setting groove 21. When in use, the staff can squeeze the spring block 23 back into the setting groove 21.

[0074] The diameter of the connecting pipe 19 is just sleeved on the outer surface of the output shaft 1. There are two setting grooves 21 and communication grooves 24, respectively at the top and bottom of the outer surface of the connecting pipe 19, and they are distributed oppositely and can overlap with each other. Their lengths and widths are the same. The spring block 23 can be elastically ejected from the setting groove 21 by the elastic force of the first spring 22 into the communication groove 24 to limit the connecting pipe 19 on the surface of the output shaft 1.

[0075] The disassembly device 20 includes a fixed block 201. An installation cavity 202 is provided inside the fixed block 201. A sliding rod 203 is fixedly installed in the middle of the bottom of the inner cavity of the installation cavity 202. A moving rod 205 is sleeved on the outer surface of the sliding rod 203. The top end of the moving rod 205 is fixedly connected to a second spring 204. A moving groove 206 is provided on one side of the installation cavity 202.

[0076] The fixed block 201 is like a folded shape, and its bottom end is connected to the output shaft 1 to form a surface that blocks the forward movement of the connecting pipe 19. When the connecting pipe 19 moves to the surface of the fixed block 201, the setting groove 21 and the communication groove 24 are opposite.

[0077] The other end of the fixed block 210 is larger, and a moving rod 205 that can move up and down along the sliding rod 203 is provided inside. The moving rod 205 is in an inverted "L" shape, and the downward extending section extends out of the fixed block 201, and can squeeze the spring block 23 back into the communication groove 24. The other end of the moving rod 205 extends out of the outside of the fixed block 201.

[0078] The left side of the moving groove 206 is connected to the installation cavity 202, and the right side is connected to the outer surface of the right side of the fixed block 201, facilitating the user to push the moving rod 205 downward.

[0079] The working principle of an oilfield drilling rotary table transmission box provided by the present invention is as follows:

[0080] During operation, first, the elastic block 23 is squeezed into the setting groove 21, then the connecting pipe 19 is sleeved on the outer surface of the output shaft. The communication groove 24 is aligned with the setting groove 21. The elastic block 23 in the setting groove 21 is not extruded by external force, and the first spring 22 drives the elastic block 23 to push outward, pushing the elastic block 23 into the communication groove 24 to restrict the connecting pipe 19.

[0081] When it is necessary to disassemble the connecting pipe 19, slide the moving rod 205 along the moving groove 206 in the direction of the output shaft 1. While the moving rod 205 slides on the surface of the sliding rod 203, it squeezes the second spring 204. The end of the moving rod 205 facing the output shaft 1 moves into the communication groove 24, squeezing the elastic block 23 from the communication groove 24 back into the setting groove 21, so that the connecting pipe 19 can be removed from the surface of the output shaft 1.

[0082] Compared with the related technology, an oilfield drilling rotary table transmission box provided by the present invention has the following beneficial effects:

[0083] The present invention provides an oilfield drilling rotary table transmission box. By providing an elastic block 23 and a disassembly device 20 on the outer surface of the output shaft 1, the elastic block 23 is embedded into the connecting pipe 19 by the elastic force of the first spring 22 to restrict the connecting pipe 19 on the outer surface of the output shaft 1, facilitating the limit connection between the connecting pipe 19 and the output shaft 1 with a fast connection speed. Then, the elastic block 23 is disassembled from the communication groove 24 through the disassembly device 20 to achieve the rapid disassembly of the connecting pipe 19, changing the threaded connection method of the fixed flange. Tools are not required during disassembly, and the disassembly and installation speeds are increased, bringing convenience to the user.

[0084] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be included in the patent protection scope of the present invention by the same token.

Claims

1. An oilfield drilling rotary table transmission box, characterized in that, Comprising: Output shaft; Brake disc connection sleeve, the brake disc connection sleeve is arranged on one side of the output shaft; the other side of the brake disc connection sleeve is fixedly installed with an output shaft universal joint connection disc through bolts; Brake device fixed support seat, the brake device fixed support seat is fixedly installed on the other side of the output shaft universal joint connection disc, the universal joint connection disc; Brake block sliding device, the brake block sliding device is arranged on the top of the outer surface of the brake disc connection sleeve, an air-operated brake disc is arranged inside the brake block sliding device, brake friction blocks are arranged on both sides of the air-operated brake disc, an air bag of the brake block sliding device is arranged on one side of the brake block sliding device, the top of the output shaft is threadedly engaged with an input shaft through an arc bevel gear, an input sprocket is arranged on the top of the input shaft, a disc clutch device is arranged on the top of the input sprocket, a cooling shell is arranged on the outer surface of the output shaft, a base is fixedly installed at the bottom of the cooling shell, a cooling cavity is arranged inside the cooling shell, cooling pipes are arranged on the inner surface of the cooling cavity, heat conducting plates are fixedly connected to the outer surface of the cooling pipes, and heat dissipation blocks are arranged on the other side of the heat conducting plates.

2. The oilfield drilling rotary table transmission box according to claim 1, characterized in that, A connecting pipe is sleeved on the outer surface of the output shaft, dismounting devices are fixedly installed on the top and bottom of the outer surface of the output shaft, setting grooves are arranged on the front sides of the top and bottom of the output shaft, communicating grooves are arranged on the top and bottom of the outer surface of the connecting pipe, a first spring is fixedly installed inside the setting groove, and a bullet block is fixedly connected to the top end of the first spring.

3. The oilfield drilling rotary table transmission box according to claim 2, characterized in that, The dismounting device comprises a fixed block, an installation cavity is arranged inside the fixed block, a sliding rod is fixedly installed in the middle of the bottom of the inner cavity of the installation cavity, a moving rod is sleeved on the outer surface of the sliding rod, a second spring is fixedly connected to the top end of the moving rod, and a moving groove is arranged on one side of the installation cavity.

Images