Pushing device for annular workpiece

Abstract

The invention provides a pushing device for an annular workpiece, which comprises a clamping base body, a jack concentrically arranged in the clamping base body, a piston cylinder arranged at the top end of the jack, and a pushing mechanism sleeved outside the clamping base body and connected with the piston cylinder, the pushing mechanism is arranged on the clamping base body, the annular workpiece is arranged in the pushing mechanism, the annular workpiece comprises a first workpiece part and a second workpiece part, the first workpiece part is fixedly connected with the clamping base body, the second workpiece part is arranged above the first workpiece part, and a clamping ring used for being fixedly connected with the second workpiece part is arranged on the pushing mechanism.

Description

Technical Field

[0001] The present invention relates to the field of measurement and control while drilling in oil drilling engineering, and particularly relates to a pushing device for an annular workpiece. Background Art

[0002] With the development of oil exploitation technology, the proportion of shale oil and gas in development wells is increasing. Due to the full rotation drilling and continuous inclination and azimuth adjustment of the rotary geosteering, the wellbore trajectory is smooth, the inclination change is monitored in real time near the bit, and combined with the azimuth gamma, resistivity and geosteering technologies, the reservoir encounter rate is greatly improved. Therefore, the rotary geosteering tool is more and more widely used.

[0003] At present, with the wide use of rotary geosteering tools, the workload of tool maintenance and repair has also increased significantly. Limited by the wellbore size, in the rotary geosteering tool, the structural cooperation of multiple components adopts an interference fit design to reduce the fixed connection structure and save the structural size space to the greatest extent. Therefore, a hot-fitting process is used during assembly, but the disassembly is difficult and special disassembly tools are required. The common disassembly tool uses a lead screw for pulling, and the disassembly speed is slow and the efficiency is low.

[0004] Therefore, in this field, it is desirable to provide a pushing device for an annular workpiece to solve the above technical problems. Summary of the Invention

[0005] The object of the present invention is to provide a pushing device for an annular workpiece, which uses the hydraulic pressure of a hydraulic pump as a power source, drives a pushing mechanism to move axially through a piston cylinder in a jack, so as to achieve the purpose of quickly separating a first workpiece part and a second workpiece part of the annular workpiece.

[0006] According to the present invention, there is provided a pushing device for an annular workpiece, including a clamping base,

[0007] a jack concentrically arranged in the clamping base, a piston cylinder provided at the top of the jack, a pushing mechanism sleeved outside the clamping base, the pushing mechanism being connected to the piston cylinder, and

[0008] an annular workpiece provided in the pushing mechanism, the annular workpiece including a first workpiece part fixedly connected to the clamping base, and a second workpiece part provided above the first workpiece part, wherein a snap ring for fixedly connecting to the second workpiece part is provided on the pushing mechanism.

[0009] In one embodiment, the pushing device further includes a joint provided at the bottom of the jack, and a hydraulic pump connected to the joint.

[0010] Wherein, the hydraulic pump is configured to be able to drive the piston cylinder to move axially within the clamping base body, thereby driving the pushing mechanism to move so as to separate the second workpiece part from the first workpiece part.

[0011] In one embodiment, the pushing device further includes pin shafts symmetrically arranged on both sides of the piston cylinder, and through grooves allowing the axial movement of the pin shafts are provided on the clamping base body.

[0012] In one embodiment, the pushing mechanism includes a pushing sleeve and a fixing ring provided below the pushing sleeve. Wherein, a through hole allowing the pin shaft to pass through is provided on the fixing ring, and a snap ring for restricting the axial position of the pin shaft is provided in the through hole.

[0013] In one embodiment, the clamping base body is configured in the form of a hollow sleeve and includes a first base body part forming a sealed connection with the inner peripheral surface of the pushing sleeve, and a second base body part radially and inwardly inclined and extending from the first base body part. Wherein, the through groove is axially within the range of the first base body part.

[0014] In one embodiment, the pushing mechanism further includes a pushing ring provided above the pushing sleeve, and the snap ring is radially provided on the pushing ring.

[0015] In one embodiment, the pushing mechanism further includes an adjusting sleeve provided between the pushing sleeve and the pushing ring, and the length range of the adjusting sleeve is 490 - 615 mm.

[0016] In one embodiment, the first workpiece part and the second workpiece part are in interference fit.

[0017] In one embodiment, an adapter sleeve is provided between the annular workpiece and the clamping base body, and the upper end surface of the adapter sleeve is configured as a conical surface.

[0018] In one embodiment, the pushing ring includes a symmetrically arranged first fixing part and a second fixing part, and a clamping part sleeved outside the first fixing part and the second fixing part and used for clamping the annular workpiece.

[0019] Compared with the prior art, the advantages of the present invention are as follows:

[0020] Firstly, the present invention uses the hydraulic pressure of the hydraulic pump as the power source, and drives the pushing mechanism to move axially through the piston cylinder in the jack, thereby achieving the purpose of quickly separating the first workpiece part and the second workpiece part of the annular workpiece.

[0021] Second, the present invention not only firmly mounts the first workpiece part of the annular workpiece on the clamping base, but also effectively locks the second workpiece part of the annular workpiece through the snap ring of the pushing ring, thereby ensuring the stability of the annular workpiece during the disassembly process, and further improving the disassembly success rate of the pushing device for the annular workpiece with respect to the annular workpiece.

[0022] Third, the present invention can be adapted to the rapid disassembly of the annular workpiece with an interference fit for a rotary geosteering tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be described in detail below with reference to the accompanying drawings. In the drawings:

[0024] Figure 1 Schematically shows the structure of the pushing device for an annular workpiece according to the present invention;

[0025] Figure 2 Schematically shows the first embodiment of the pushing device for an annular workpiece according to the present invention;

[0026] Figure 3 Schematically shows the second embodiment of the pushing device for an annular workpiece according to the present invention;

[0027] Figure 4 Schematically shows the third embodiment of the pushing device for an annular workpiece according to the present invention.

[0028] In the drawings, the same components are denoted by the same reference numerals. The drawings are not drawn to actual scale. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] In order to make the technical solutions and advantages of the present invention clearer and more understandable, the exemplary embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than an exhaustive list of all embodiments. And without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0030] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0031] In the present invention, unless otherwise clearly specified and defined, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components.

[0032] For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The present invention will be further described below with reference to the accompanying drawings.

[0034] Figure 1 It schematically shows the structure of a pushing device 100 for a ring-shaped workpiece according to the present invention.

[0035] As Figure 1 shown, the pushing device 100 for a ring-shaped workpiece according to the present invention includes a clamping base 10 configured in the form of a hollow sleeve, a jack 20 concentrically arranged within the clamping base 10, a pushing mechanism sleeved outside the clamping base 10, and a ring-shaped workpiece disposed within the pushing mechanism.

[0036] In one embodiment, as Figure 1 shown, a piston cylinder 21 is provided at the top end of the jack 20, and the pushing mechanism is connected to the piston cylinder 21. Preferably, the piston cylinder 21 is configured to be able to move axially within the clamping base 10, so as to be able to drive the pushing mechanism to move axially together, which is helpful for the subsequent disassembly work of the ring-shaped workpiece, the content of which will be introduced hereinafter.

[0037] In one embodiment, as Figure 1 shown, the ring-shaped workpiece includes a first workpiece portion 41 and a second workpiece portion 42 disposed above the first workpiece portion 41. In the present invention, the first workpiece portion 41 and the second workpiece portion 42 are in interference fit.

[0038] Preferably, the lower end surface of the first workpiece portion 41 of the ring-shaped workpiece and the upper end surface of the clamping base 10 are formed into a threaded connection, so as to improve the firmness between the first workpiece portion 41 of the ring-shaped workpiece and the clamping base 10.

[0039] In one embodiment, as Figure 1As shown, a snap ring 341 is provided on the pushing mechanism. Preferably, the pushing mechanism can form a fixed connection with the second workpiece part 42 of the annular workpiece through the snap ring 341. Therefore, when the pushing mechanism moves axially following the piston cylinder 21, the second workpiece part 42 of the annular workpiece can move together with the pushing mechanism, thereby completing the disassembly of the annular workpiece, that is, separating the first workpiece part 41 of the annular workpiece from the second workpiece part 42 of the annular workpiece.

[0040] According to the present invention, as Figure 1 shown, the pushing device 100 for the annular workpiece further includes a joint 22 provided at the bottom of the jack 20, and a hydraulic pump 50 connected to the joint 22.

[0041] In an embodiment of the present invention, the hydraulic pump 50 is configured to be able to drive the piston cylinder 21 to move axially within the clamping base 10, thereby driving the pushing mechanism to move synchronously through the piston cylinder 21, so that the second workpiece part 42 of the annular workpiece is separated from the first workpiece part 41 of the annular workpiece, and thus the disassembly of the annular workpiece is completed.

[0042] Preferably, the joint 22 in the present invention is a quick joint; the hydraulic pump 50 in the present invention can provide a pressure of 0 - 60 MP.

[0043] In one embodiment, the pushing device further includes pin shafts (not shown in the drawings) symmetrically arranged on both sides of the piston cylinder 21. And, a through groove 14 adapted to the pin shafts is provided on the clamping base 10, that is, the pin shafts can move axially within the through groove 14.

[0044] As can be seen from the above, the hydraulic pump 50 in the present invention can drive the piston cylinder 21 to move axially within the clamping base 10. During this process, the pin shafts on the piston cylinder 21 will achieve axial displacement within the range defined by the through groove 14, that is, the axial movement path of the piston cylinder 21 is defined by the through groove 14.

[0045] In this way, on the one hand, it is ensured that when the piston cylinder 21 moves to the farthest position, the second workpiece part 42 can be completely separated from the first workpiece part 41, thereby improving the disassembly success rate of the annular workpiece in the present invention; on the other hand, the through groove 14 can play a good limiting role on the piston cylinder 21 to ensure that the piston cylinder 21 can always move axially on the specified route, thereby improving the service life of the pushing device 100 for the annular workpiece.

[0046] According to the present invention, as Figure 1 shown, the pushing mechanism includes a pushing sleeve 31, and a fixing ring 32 provided below the pushing sleeve 31. Among them, a through hole (not shown in the drawings) allowing the pin shaft to pass through is provided on the fixing ring 32.

[0047] In the present invention, the pin shafts disposed on both sides of the piston cylinder 21 can pass through the through slots 14 and penetrate into the through holes on the fixing ring 32, thereby ensuring that the piston cylinder 21 and the pushing sleeve 31 can smoothly achieve the purpose of synchronous movement.

[0048] In addition, since the pushing mechanism can form a fixed connection with the second workpiece portion 42 of the annular workpiece through the snap ring 341, when the pushing sleeve 31 moves axially along with the piston cylinder 21, the first workpiece portion 41 of the annular workpiece is connected to the clamping base 10 and remains stationary, while the second workpiece portion 42 of the annular workpiece moves axially relative to the first workpiece portion 41 under the action of the pushing mechanism, so that the first workpiece portion 41 and the second workpiece portion 42 in the annular workpiece can be successfully separated.

[0049] In one embodiment, a snap spring (not shown in the drawings) for restricting the axial position of the pin shaft is provided in the through hole. Preferably, the snap springs can respectively fix the two ends of the pin shaft in different through holes, and under the action of the two snap springs, the axial position of the pin shaft can be effectively restricted simultaneously to ensure that the pin shaft can always maintain a fixed working position during the disassembly process of the annular workpiece, thereby improving the disassembly success rate of the pushing device 100 for the annular workpiece on the annular workpiece.

[0050] According to the present invention, as Figure 1 shown, the clamping base 10 includes a first base portion 11 that forms a sealed connection with the inner peripheral surface of the pushing sleeve 31. Preferably, the through slot 14 is axially within the range of the first base portion 11.

[0051] In the present invention, the through slots 14 on the clamping base 10 and the through holes on the fixing ring 32 are axially aligned with each other, so as to ensure that the pin shafts disposed on both sides of the piston cylinder 21 can smoothly pass through the through slots 14 and penetrate into the through holes, so as to realize the fixed relationship between the piston cylinder 21, the fixing ring 32 and the pushing sleeve 31, thereby ensuring that the piston cylinder 21 and the pushing mechanism can achieve synchronous movement.

[0052] In one embodiment, as Figure 1 shown, the clamping base 10 further includes a second base portion 12 that extends radially inwardly and obliquely from the first base portion 11. Preferably, an external thread is provided on the second base portion 12, and an internal thread is provided on the first workpiece portion 41, so that the second base portion 12 and the first workpiece portion 41 form a threaded connection.

[0053] In this way, the first workpiece portion 41 of the annular workpiece and the clamping base 10 can have a firm connection relationship during the disassembly work of the annular workpiece, thereby improving the disassembly success rate of the pushing device 100 for the annular workpiece on the annular workpiece.

[0054] In one embodiment, as Figure 1 shown, the pushing mechanism further includes a pushing ring 34 disposed above the pushing sleeve 31. Preferably, a snap ring 341 is radially disposed on the pushing ring 34;

[0055] Correspondingly, a clamping groove (not shown in the drawings) is provided on the outer wall of the second workpiece portion 42 of the annular workpiece, so as to be adapted to the snap ring 341, that is, the snap ring 341 of the pushing ring 34 can be inserted into the clamping groove of the second workpiece portion 42, thereby ensuring the firmness between the pushing mechanism and the second workpiece portion 42 of the annular workpiece.

[0056] In this way, the pushing ring 34 and the second workpiece portion 42 can have a firm connection relationship during the disassembly process of the annular workpiece. At the same time, since there is also a firm connection relationship between the first workpiece portion 41 and the clamping base 10. Therefore, when the pushing mechanism moves axially following the piston cylinder 21, the first workpiece portion 41 and the second workpiece portion 42 can be more easily separated under the action of the hydraulic pressure applied by the hydraulic pump 50.

[0057] In one embodiment, as Figure 1 shown, the pushing mechanism further includes an adjusting sleeve 33 disposed between the pushing sleeve 31 and the pushing ring 34. It is easy to understand that the present invention can select a suitable adjusting sleeve 33 according to the length of the annular workpiece, so as to ensure that the snap ring 341 of the pushing ring 34 can be smoothly docked with the clamping groove of the second workpiece portion 42 axially.

[0058] Preferably, the length range of the adjusting sleeve 33 is 490 - 615 mm.

[0059] According to an embodiment of the present invention, the pushing sleeve 31, the adjusting sleeve 33 and the pushing ring 34 are stacked and arranged in sequence along the axial direction. In other words, the pushing sleeve 31, the adjusting sleeve 33 and the pushing ring 34 are all in an axially abutting state.

[0060] In one embodiment, the clamping base 10 further includes a third base portion 13 disposed below the first base portion 11. Preferably, the third base portion 13 can be fixed on a clamping device (not shown in the drawings) by an outer circle clamping method. The clamping device in the present invention is, for example, a hydraulic disassembly and assembly frame or a single-arm clamp.

[0061] The working principle of the present invention will be introduced below:

[0062] First, the hydraulic pump 50 inputs hydraulic pressure to the jack 20 through the joint 22;

[0063] Then, the piston cylinder 21 in the jack 20 moves axially under the action of hydraulic pressure. At the same time, the piston cylinder 21 drives the push sleeve 31 and the fixed ring 32 to move axially synchronously.

[0064] Finally, the push sleeve 31 sequentially pushes the adjustment sleeve 33 and the push ring 34, thereby driving the second workpiece part 42 of the annular workpiece to move axially relative to the first workpiece part 41 of the annular workpiece, and further separating the first workpiece part 41 and the second workpiece part 42 of the annular workpiece.

[0065] In one embodiment, an adapter sleeve 60 is provided between the annular workpiece and the clamping base 10. Preferably, the upper end face of the adapter sleeve 60 is configured as a conical surface. Correspondingly, in the first embodiment of the present invention, the upper end face of the adapter sleeve 60 can be configured as an Figure 2 outer conical surface as shown, and in the second embodiment of the present invention, the upper end face of the adapter sleeve 60 can also be configured as an Figure 3 inner conical surface as shown. Therefore, the present invention can adapt to more sizes of annular workpieces by replacing the adapter sleeve 60.

[0066] In the third embodiment of the present invention, as Figure 4 shown, the push ring 34 includes a symmetrically arranged first fixing portion 341 and a second fixing portion 342, and a clamping portion 343 sleeved outside the first fixing portion 341 and the second fixing portion 342. Preferably, the clamping portion 343 can lock the first fixing portion 341 and the second fixing portion 342, so as to achieve the purpose of fastening the annular workpiece, and further improve the separation ability of the first workpiece part 41 and the second workpiece part 42 in the annular workpiece by the pushing device 100 for the annular workpiece.

[0067] Compared with the prior art, the present invention has the following advantages:

[0068] First, the present invention uses the hydraulic pressure of the hydraulic pump 50 as the power source, and drives the pushing mechanism to move axially through the piston cylinder 21 in the jack 20, so as to achieve the purpose of quickly separating the first workpiece part 41 and the second workpiece part 42 of the annular workpiece.

[0069] Second, the present invention not only firmly installs the first workpiece part 41 of the annular workpiece on the clamping base 10, but also effectively locks the second workpiece part 42 of the annular workpiece through the clamping ring 341 of the push ring 34, thereby ensuring the stability of the annular workpiece during the disassembly process, and further improving the disassembly success rate of the pushing device 100 for the annular workpiece for the annular workpiece.

[0070] Third, the present invention can be adapted to the rapid disassembly work of the annular workpiece with interference fit installation of the rotary geosteering tool.

[0071] The above are only the preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art can easily make changes or variations within the disclosure scope of the present invention, and such changes or variations should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A pushing device for annular workpieces, include: Clamping base (10), A jack (20) is concentrically arranged in the clamping base (10), and a piston cylinder (21) is provided at the top end of the jack (20). a pushing mechanism sleeved on the outside of the clamping base (10), the pushing mechanism being connected to the piston cylinder (21), and An annular workpiece is arranged in the pushing mechanism, the annular workpiece comprises a first workpiece portion (41) fixedly connected to the clamping base (10), and a second workpiece portion (42) arranged above the first workpiece portion (41), wherein a retaining ring (341) for fixedly connecting to the second workpiece portion (42) is provided on the pushing mechanism.

2. The pushing device for an annular workpiece according to claim 1, It is characterized in that The pushing device further comprises a joint (22) arranged at the bottom of the jack (20), and a hydraulic pump (50) connected to the joint (22). The hydraulic pump (50) is configured to drive the piston cylinder (21) to move axially within the clamping base (10), thereby driving the pushing mechanism to move so as to separate the second workpiece portion (42) from the first workpiece portion (41).

3. The pushing device for annular workpiece according to claim 2, It is characterized in that The pushing device also includes pins symmetrically arranged on both sides of the piston cylinder (21), and a through groove (14) allowing the pin to move axially is provided on the clamping base (10).

4. The pushing device for an annular workpiece according to claim 3, It is characterized in that The pushing mechanism comprises a pushing sleeve (31) and a fixing ring (32) arranged below the pushing sleeve (31), wherein the fixing ring (32) is provided with a through hole allowing the pin shaft to pass through, and a retaining spring for limiting the axial position of the pin shaft is provided in the through hole.

5. The pushing device for an annular workpiece according to claim 4, It is characterized in that The clamping base (10) is constructed in the form of a hollow sleeve and includes a first base portion (11) that forms a sealed connection with the inner circumferential surface of the push sleeve (31), and a second base portion (12) that extends radially inwardly from the first base portion (11), wherein the through groove (14) is axially within the range of the first base portion (11).

6. The pushing device for an annular workpiece according to claim 5, It is characterized in that The pushing mechanism further comprises a pushing ring (34) arranged above the pushing sleeve (31), and the snap ring (341) is radially arranged on the pushing ring (34).

7. The pushing device for an annular workpiece according to claim 6, It is characterized in that The pushing mechanism further comprises an adjustment sleeve (33) arranged between the pushing sleeve (31) and the pushing ring (34); the length of the adjustment sleeve (33) ranges from 490 to 615 mm.

8. The pushing device for an annular workpiece according to claim 7, It is characterized in that The first workpiece portion (41) and the second workpiece portion (42) are interference fit.

9. The pushing device for an annular workpiece according to claim 8, It is characterized in that An adapter sleeve (60) is provided between the annular workpiece and the clamping base (10), and the upper end surface of the adapter sleeve (60) is configured as a conical surface.

10. The pushing device for an annular workpiece according to claim 8, It is characterized in that The pushing ring (34) comprises a first fixing portion (341) and a second fixing portion (342) which are symmetrically arranged, and a clamping portion (343) which is sleeved outside the first fixing portion (341) and the second fixing portion (342) and is used to tighten the annular workpiece.

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