CN111794715B - Lever anti-theft device is pressed to beam-pumping unit - Google Patents
Lever anti-theft device is pressed to beam-pumping unit Download PDFInfo
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- CN111794715B CN111794715B CN202010659094.9A CN202010659094A CN111794715B CN 111794715 B CN111794715 B CN 111794715B CN 202010659094 A CN202010659094 A CN 202010659094A CN 111794715 B CN111794715 B CN 111794715B
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- Prior art keywords
- theft
- nut
- screw rod
- pumping unit
- upper cover
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
- E05B15/16—Use of special materials for parts of locks
- E05B15/1614—Use of special materials for parts of locks of hard materials, to prevent drilling
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B65/00—Locks or fastenings for special use
Abstract
The invention discloses a pressure bar anti-theft device of an oil pumping unit, which comprises a pressure plate, a gland, an anti-theft lock mechanism and a connecting mechanism, wherein the gland is arranged on the pressure plate; the shell of the anti-theft lock mechanism is provided with an embedded section and a matching section, and the inner wall of the matching section is provided with a lower limiting bulge and an upper limiting bulge; the eccentric sleeve comprises a thread matching part and a shell matching part, and the shell matching part is positioned between the lower limiting bulge and the upper limiting bulge; the upper cover is matched with one side of the matching section away from the embedded section; the connecting mechanism comprises a connecting screw rod and a locking nut; the connecting screw comprises a core and a sleeve; the locking nut is in threaded connection with the connecting screw rod and is located in the connecting mechanism cavity. The anti-theft lock mechanism is set to be a closed structure, the core piece of the connecting screw rod is set to be ceramic material, the risk that the connecting screw rod is sawed off is reduced, and the anti-theft performance of the anti-theft device for the pressure lever of the oil pumping unit is effectively improved.
Description
Technical Field
The invention relates to the field of anti-theft of pumping units, in particular to an anti-theft device for a pressure lever of a pumping unit.
Background
In order to effectively avoid the theft problem of the pressure bar of the pumping unit, the anti-theft device of the pressure bar is arranged on the pressure bar to realize the anti-theft of the pressure bar.
As shown in fig. 1, a conventional pumping unit pressure bar anti-theft device (CN202628043U) includes: the anti-theft device comprises a pressure plate 1', a fastening bolt 12', a gland 2' and an anti-theft lock, wherein the fastening bolt 12' is arranged on the pressure plate 1', a compression nut 13' is arranged on the fastening bolt 12', the gland 2' is buckled on the compression nut 13', and the gland 2' is fixed on the pressure plate 1' through the anti-theft lock in a screwing mode. The anti-theft lock comprises a positioning sleeve lock body 5', an inner sleeve 7', an eccentric sleeve 8', a spring lock upper cover and a lock cylinder screw rod 4', wherein the inner sleeve 7' is arranged in the positioning sleeve lock body 5', the eccentric sleeve 8' is limited and rotatably arranged in the inner sleeve 7' through a limiting plate 6' fixedly arranged at the bottom end of the inner sleeve 7', the lock cylinder screw rod 4' is in threaded connection with the eccentric sleeve 8', the bottom end of the lock cylinder screw rod is fixed on a pressing plate 1', and the upper end of the lock cylinder screw rod is provided with the spring lock upper cover. The bottom end of the locating sleeve lock body 5' is symmetrically provided with convex blocks which are matched with the grooves 3' arranged on the gland 2 '.
The part of the fastening bolt 12' of the pumping unit pressure bar anti-theft device with the structure below the pressure plate 1' has the risk of being sawn off, and a gap is formed between the spring lock upper cover and the inner sleeve 7', so that a thief can pry a rod or a rod (such as a bamboo rod) with certain elasticity and hardness into the gap between the eccentric sleeve 8' and the lock cylinder screw rod 4' from the gap between the spring lock upper cover and the inner sleeve 7', thereby rotating the eccentric sleeve 8' without a special tool.
Therefore, how to provide an oil pumping unit pressure bar anti-theft device capable of effectively improving the anti-theft performance becomes a technical problem which needs to be solved urgently in the field.
Disclosure of Invention
The invention aims to provide a novel technical scheme of an oil pumping unit pressure bar anti-theft device capable of effectively improving anti-theft performance.
According to a first aspect of the invention, an anti-theft device for a pressure bar of an oil pumping unit is provided.
The anti-theft device for the pressure lever of the oil pumping unit comprises a pressure plate, a gland, an anti-theft lock mechanism and a connecting mechanism; wherein the content of the first and second substances,
the pressing cover is positioned on the pressing plate, and an anti-theft lock mechanism groove and a connecting mechanism cavity are formed in the pressing cover;
the anti-theft lock mechanism comprises an anti-theft screw, a shell, an eccentric sleeve and an upper cover;
the anti-theft screw is in threaded fit with the pressure plate, and extends from the pressure plate towards the direction of the anti-theft lock mechanism groove;
the shell is provided with a chimeric section and a matching section which are sequentially arranged from bottom to top, the chimeric section is in interference fit with the anti-theft lock mechanism groove so that the shell is embedded in the anti-theft lock mechanism groove, and the inner wall of the matching section is provided with a lower limiting bulge and an upper limiting bulge;
the eccentric sleeve comprises a thread matching part and a shell matching part, the thread matching part is in thread matching with the anti-theft screw, the shell matching part is arranged around the anti-theft screw, a central shaft of the shell matching part is not collinear with a central shaft of the anti-theft screw, and the shell matching part is positioned between the lower limiting bulge and the upper limiting bulge;
the upper cover is matched with one side of the matching section, which is far away from the embedding section, so as to seal an opening on one side of the matching section, which is far away from the embedding section;
the connecting mechanism comprises a connecting screw rod and a locking nut;
the two ends of the connecting screw rod are respectively in threaded connection with the oil pumping unit fixing reserved part and the pressing plate, the connecting screw rod extends from the pressing plate to the connecting mechanism cavity, the connecting screw rod comprises a core piece and a sleeve piece, the core piece is made of ceramic materials, the sleeve piece is arranged around the core piece, and the wall thickness of the sleeve piece is smaller than the diameter of the core piece;
the locking nut is in threaded connection with the connecting screw rod, and the locking nut is located in the connecting mechanism cavity.
Optionally, the embedding section includes an embedding main body and a spring plate, and an outer wall of the embedding main body is matched with an inner wall of the anti-theft lock mechanism groove;
the spring plate extends from the inner wall of the embedded main body towards the anti-theft screw rod, the spring plate is located at one end, close to the pressing plate, of the embedded main body, and gaps are formed among the spring plate, the pressing plate and the lower limiting bulges.
Optionally, gaps are formed between the housing matching part and the lower limiting protrusion, between the upper limiting protrusion and the inner wall of the housing;
the lower limiting bulge and the upper limiting bulge are arranged around the anti-theft screw rod, and the lower limiting bulge is abutted to the outer wall of the thread matching part.
Optionally, the anti-theft lock mechanism further comprises a flexible gasket;
the flexible gasket is located between the top end of the anti-theft screw and the upper cover, and the flexible gasket abuts against the anti-theft screw and the upper cover.
Optionally, the anti-theft lock mechanism further comprises an upper cover locking assembly and an upper cover dismounting member;
the upper cover locking assembly comprises a locking ball and an elastic piece, a locking groove is formed in the side wall, facing the matching section, of the upper cover, a matching groove is formed in the matching section, the locking ball is in sliding fit with the locking groove and the matching groove, and the elastic piece is installed in the locking groove to provide elastic force towards the matching groove for the locking ball;
the upper cover-removing member is made of a magnetic material, and the upper cover-removing member is configured to magnetically attract the locking ball so that the locking ball moves in a direction away from the fitting groove.
Optionally, the core member is made of cement, the sleeve member is made of metal, and a plurality of embedding grooves are formed in the outer surface of the core member.
Optionally, the connecting mechanism further comprises a fitting nut, the fitting nut is in threaded connection with the connecting screw rod, and the fitting nut is located in the connecting mechanism cavity;
the lock nut is adjacent to the pressure plate relative to the mating nut, and a gap is provided between the lock nut and the pressure plate and between the lock nut and the mating nut.
Optionally, a distance between the lock nut and the pressure plate is smaller than a distance between the fitting nut and the lock nut.
Optionally, a vibration damping opening is formed in a wall of the connecting mechanism cavity, which is far away from the pressure plate, the top end of the connecting screw rod is located in the connecting mechanism cavity, and the top end of the connecting screw rod is arranged corresponding to the vibration damping opening;
the matching nut is positioned at the end part of the connecting screw rod.
Optionally, the mating nut is a locknut.
The anti-theft lock mechanism is set to be a closed structure, the core piece of the connecting screw rod is set to be ceramic material, the risk that the connecting screw rod is sawed off is reduced, and the anti-theft performance of the anti-theft device for the pressure lever of the oil pumping unit is effectively improved.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic view of a conventional pumping unit pressure bar anti-theft device.
Fig. 2 is a schematic structural view of an embodiment of the anti-theft device for the pressure bar of the pumping unit of the present disclosure.
The figures are labeled as follows:
pressing plate-1 ', pressing cover-2', groove-3 ', lock core screw-4', positioning sleeve lock body-5 ', limiting plate-6', inner sleeve-7 ', eccentric sleeve-8', fastening bolt-12 ', pressing nut-13', pressing plate-1, pressing cover-2, anti-theft lock mechanism groove-21, connecting mechanism cavity-22, vibration damping opening-220, anti-theft screw-3, outer shell-4, embedding section-41, embedding main body-411, spring plate-412, matching section-42, lower limiting bulge-421, upper limiting bulge-422, eccentric sleeve-5, thread matching part-51, outer shell matching part-52, upper cover-6, connecting screw-7, core piece-71 and embedding groove-710, the oil pumping unit comprises a sleeve piece-72, a locking nut-8, a matching nut-9, a flexible gasket-10, a locking ball-11, an elastic piece-12, an upper cover dismounting piece-13 and an oil pumping unit fixing reserved piece-01.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
As shown in fig. 2, the pumping unit pressure bar anti-theft device of the present disclosure includes a pressure plate 1, a gland 2, an anti-theft lock mechanism and a connection mechanism.
The gland 2 is positioned on the pressure plate 1, and the anti-theft lock mechanism groove 21 and the connecting mechanism cavity 22 are arranged on the gland 2. In specific implementation, the gland 2 covers part of the surface of the pressing plate 1, and the pressing rod is positioned on the other surface of the pressing plate 1 opposite to the gland 2.
The anti-theft lock mechanism comprises an anti-theft screw 3, a shell 4, an eccentric sleeve 5 and an upper cover 6.
The anti-theft screw 3 is in threaded fit with the pressure plate 1, and the anti-theft screw 3 extends from the pressure plate 1 towards the anti-theft lock mechanism groove 21.
The housing 4 has an engaging section 41 and a fitting section 42 arranged in this order from the bottom up. The fitting section 41 is interference-fitted with the anti-theft lock mechanism groove 21 so that the housing 4 is fitted in the anti-theft lock mechanism groove 21. The fitting section 41 may have a hollow structure or a solid structure. The free end of the engaging section 41 may abut against the pressure plate 1 or have a certain gap with the pressure plate 1. The inner wall of the fitting section 42 is provided with a lower limiting projection 421 and an upper limiting projection 422. The lower limiting protrusion 421 and the upper limiting protrusion 422 both extend from the inner wall of the fitting section 42 toward the central axis of the fitting section 42. In practical applications, the lower limiting protrusion 421 and the upper limiting protrusion 422 may have a plate-like structure or a block-like structure. In addition, lower spacing arch 421 and upper limit arch 422 still can have certain elasticity (for example for the elastic arm) to the absorption part comes from the vibration of beam-pumping unit, thereby effectively avoids the problem that the theftproof latch mechanism that the cooperation is more and more tight to lead to between each part of theftproof latch mechanism that leads to because of the vibration transmission of beam-pumping unit can't be dismantled.
The eccentric sleeve 5 includes a screw-fitting portion 51 and a housing-fitting portion 52. The screw-fitting portion 51 is screw-fitted to the antitheft screw 3. The housing fitting portion 52 is disposed around the antitheft screw rod 3, and a certain gap is provided between an inner wall of the housing fitting portion 52 and an outer surface of the antitheft screw rod 3. The center axis of the housing fitting portion 52 is not collinear with the center axis of the antitheft screw rod 3, and thus exhibits an eccentric characteristic. The housing fitting portion 52 is located between the lower limit projection 421 and the upper limit projection 422.
The upper cover 6 is fitted with a side of the fitting section 42 away from the fitting section 41 to close an opening of the side of the fitting section 42 away from the fitting section 41. The upper cover 6 may have a structure similar to that of the prior art and be detached by a permanent magnet. Or, the upper cover 6 may have a smooth arc-shaped outer surface, and be engaged with the engaging section 42 by means of a screw or a snap connection, and the upper cover 6 cannot be detached by a thief in a short time only by a dedicated detaching tool which can clamp the upper cover 6 and apply an effective force thereto.
In particular, the outer side wall of the fitting section 42 may be provided with a circumferential protrusion for limiting the position of the upper cover 6.
The connecting mechanism comprises a connecting screw rod 7 and a locking nut 8.
Two ends of the connecting screw rod 7 are respectively in threaded connection with the oil pumping unit fixing reserved part 01 and the pressing plate 1, and the connecting screw rod 7 extends from the pressing plate 1 to the connecting mechanism cavity 22.
The connecting screw 7 comprises a core 71 and a sleeve 72. Core 71 is a ceramic material. Sleeve 72 is disposed about core 71, and the wall thickness of sleeve 72 is less than the diameter of core 71. In one embodiment, core 71 may be, for example, cement or a silicate ceramic. The material of the sleeve 72 may be metal, for example. The core 71 made of ceramic material can effectively prevent the part of the connecting screw 7 below the pressure plate 1 from being sawn off, and even if the core 71 is broken under the action of external force, the core 71 can be supported between the pressure plate 1 and the pumping unit fixing reservation 01 under the protection of the sleeve 72, so that the connecting and supporting functions of the connecting screw 7 can be maintained.
The lock nut 8 is in threaded connection with the connecting screw 7, and the lock nut 8 is located in the connecting mechanism cavity 22.
When the anti-theft device for the pressing rod of the pumping unit is assembled, the connecting screw rod 7 and the fixed reserved part 01 of the pumping unit, the pressing rod and the pressing plate 1 are connected together in a threaded mode, and the anti-theft screw rod 3 is installed on the pressing plate 1. The locking nuts 8 are then screwed onto the connecting screws 7. The gland 2 is then supported on the pressure plate 1 so that the lock nut 8 is located within the coupling mechanism cavity 22. And then the combined eccentric sleeve 5 and housing 4 are sequentially mounted on the antitheft screw rod 3. And finally, mounting the upper cover 6 on the shell 4, namely completing the assembly of the oil pumping unit pressure bar anti-theft device.
When the pumping unit pressure bar anti-theft device is disassembled, the upper cover 6 is disassembled from the shell 4, and then the sleeve type disassembling tool matched with the eccentric sleeve 5 applies force to the eccentric sleeve 5, so that the eccentric sleeve 5 rotates relative to the anti-theft screw rod 3. After the eccentric sleeve 5 rotates to a certain position along the anti-theft screw 3, acting force in the direction away from the pressing plate 1 and the pressing cover 2 can be applied to the shell 4 through the upper limiting protrusion 422. With the continuous rotation of the eccentric sleeve 5, both the eccentric sleeve 5 and the housing 4 can leave the antitheft screw rod 3. The gland 2 can then be removed. The locking nut 8 can then be detached from the connecting screw 7. And finally, respectively disassembling the anti-theft screw 3 and the connecting screw 7, namely completing the disassembly of the oil pumping unit pressure bar anti-theft device.
According to the pumping unit pressure bar anti-theft device, the anti-theft lock mechanism is set to be of a closed structure, the core piece 71 of the connecting screw 7 is set to be made of ceramic materials, the risk that the connecting screw 7 is sawed off is reduced, and the anti-theft performance of the pumping unit pressure bar anti-theft device is effectively improved.
In one embodiment of the pumping unit pressure bar anti-theft device of the present disclosure, the fitting section 41 includes a fitting main body 411 and a spring plate 412. The outer wall of the fitting body 411 is fitted to the inner wall of the anti-theft lock mechanism groove 21, and the two are fitted together by interference. The elastic piece 412 extends from the inner wall of the fitting body 411 toward the antitheft screw 3, and the elastic piece 412 is located at one end of the fitting body 411 adjacent to the pressing plate 1. The elastic pieces 412 may be spaced apart from the pressure plate 1, or the elastic pieces 412 may be attached to the surface of the pressure plate 1. The elastic piece 412 has certain elasticity and may have a plate structure or a sheet structure. The elastic sheet 412 is arranged to effectively absorb part of the vibration from the pumping unit, so that the reusability of the pumping unit pressure bar anti-theft device is ensured.
A gap is formed between the elastic piece 412 and the pressure plate 1, and a gap is formed between the elastic piece 412 and the lower limiting protrusion 421. In specific implementation, the gap between the elastic piece 412 and the pressing plate 1 is smaller than the gap between the elastic piece 412 and the lower limiting protrusion 421. The gap between the elastic piece 412 and the pressure plate 1 and the gap between the elastic piece 412 and the lower limiting protrusion 421 are both beneficial to improving the efficiency of the elastic piece for absorbing vibration. In addition, the gap between the elastic sheet 412 and the lower limit protrusion 421 is larger than the gap between the elastic sheet 412 and the pressure plate 1, which is beneficial to effectively reducing the contact frequency of the elastic sheet 412 and the lower limit protrusion 421 caused by vibration absorption, so that the problem that the lower limit protrusion 421 is stressed to press the eccentric sleeve 5 is solved.
In one embodiment of the pumping unit pressure bar anti-theft device of the present disclosure, the housing fitting portion 52 has a gap with the lower limit protrusion 521, the upper limit protrusion 522 and the inner wall of the housing 4. That is, in a natural state where no external force is applied, the housing fitting portion 52 of the eccentric sleeve 5 is not in contact with the surface of the housing 4, but is maintained at a certain distance. By the arrangement, when the eccentric sleeve 5 vibrates along with the anti-theft screw 3, the eccentric sleeve 5 can be contacted with any one or more of the lower limiting bulge 521, the upper limiting bulge 522 or the inner wall of the shell 4, so that part of vibration from the pumping unit is absorbed, and the problem that the eccentric sleeve 5 and the shell 4 are tightly matched along with the vibration of the pumping unit is effectively avoided.
In order to absorb the vibration from the pumping unit more effectively, the lower limiting projection 421 and the upper limiting projection 422 are both disposed around the antitheft screw rod 3, and the lower limiting projection 421 abuts against the outer wall of the thread matching part 51.
In one embodiment of the pumping unit pressure bar anti-theft device of the present disclosure, the anti-theft lock mechanism further comprises a flexible gasket 10.
The flexible gasket 10 is positioned between the top end of the anti-theft screw 3 and the upper cover 6, and the flexible gasket 10 is abutted against the anti-theft screw 3 and the upper cover 6. The flexible gasket 10 may be made of a flexible material such as rubber or silicone. The flexible gasket is arranged to be beneficial to absorbing the vibration transmitted by the anti-theft screw 3 and the upper cover 6.
In one embodiment of the pumping unit pressure bar anti-theft device of the present disclosure, the anti-theft lock mechanism further includes an upper cover locking assembly and an upper cover removing member 13.
The upper cover locking assembly includes a locking ball 11 and an elastic member 12. The side wall of the upper cover 6 facing the matching section 42 is provided with a locking groove. The mating segment 42 is provided with a mating slot. The locking ball 11 is in sliding fit with the locking groove and the mating groove. The elastic member 12 is installed in the locking groove to provide an elastic force to the locking ball 11 toward the mating groove. The elastic member 12 may be, for example, a compression spring or an elastic arm, etc. The elastic force of the elastic member 12 applied to the locking ball 11 may make the locking ball 11 stay at the intersection line of the locking groove and the mating groove, thereby fixing the upper cover 6 to the housing 4.
The cap remover 13 is made of a magnetic material, and the cap remover 13 may be configured to magnetically attract the locking ball 11 such that the locking ball 11 moves away from the mating groove. The upper cover-removing member 13 may have a cover-like structure or a ring-like structure or the like that fits the upper cover 6. When the upper cover 6 needs to be detached, the upper cover detaching piece 13 is installed on the upper cover 6, the locking ball 11 leaves the matching groove and completely enters the locking groove under the magnetic adsorption effect of the upper cover detaching piece 13, and at this time, the upper cover 6 can be detached from the shell 4.
The anti-theft lock mechanism with the structure can conveniently disassemble the upper cover 6, and is convenient to use.
In one embodiment of the pumping unit pressure bar antitheft device of the present disclosure, the core member 71 is made of cement, the sleeve member 72 is made of metal, and a plurality of fitting grooves 710 are provided on an outer surface of the core member 71. In this embodiment, core 71 and sleeve 72 may be coupled together by casting or the like, and fitting groove 710 is advantageous in improving the coupling force between core 71 and sleeve 72.
In practice, the fitting grooves 710 may be provided around the outer surface of the core member 71, and the dimensions of the fitting grooves 710 may be the same or different.
In an embodiment of the pumping unit pressure bar anti-theft device of the present disclosure, the connection mechanism further comprises a mating nut 9. The mating nut 9 is in threaded connection with the connecting screw 7, and the mating nut 9 is located in the connecting mechanism cavity 22.
The lock nut 8 is adjacent to the pressure plate 1 relative to the mating nut 9, and there is a gap between the lock nut 8 and the pressure plate 1 and the mating nut 9. When the pressure plate 1 is contacted with the locking nut 8 due to the vibration transmitted by the pumping unit, part of the vibration of the pumping unit is absorbed through the contact between the pressure plate 1 and the locking nut 8. If the lock nut 8 is in contact with the matching nut 9 due to vibration, the matching nut 9 can prevent the lock nut 8 from being loosened due to vibration, and the matching nut 9 can assist in absorbing the vibration transmitted from the lock nut 8.
The double nuts of the connecting mechanism can effectively absorb the problem that the parts are too tightly matched due to the vibration of the oil pumping unit, so that the reusability of the oil pumping unit pressure bar anti-theft device is improved.
Further, in order to improve the efficiency of the lock nut 8 in absorbing vibration, the distance between the lock nut 8 and the pressure plate 1 is smaller than the distance between the mating nut 9 and the lock nut 8.
Further, a vibration damping opening 220 is provided on a wall of the connection mechanism chamber 22 away from the pressure plate 1. The top end of the connecting screw 7 is located in the connecting mechanism cavity 22, and the top end of the connecting screw 7 is arranged corresponding to the vibration damping opening 220. A mating nut 9 is located at the end of the connecting screw 7. The provision of the vibration damping opening 220 facilitates absorption of stress in a portion of the gland 2 due to vibration. Generally, the size of the vibration damping opening 220 is larger than that of the connecting screw 7, and the size of the vibration damping opening 220 is smaller than that of the fitting nut 9, so that a certain moving space is given to the connecting screw 7, and the problem of deformation of the gland 2 caused by hard contact between the connecting screw 7 and the gland 2 is avoided.
Further, the fitting nut 9 is a locknut. The locknut may be a hadamard nut or an eccentric nut, for example. The matched nut 9 with the structure can improve the use safety of the pumping unit pressure bar anti-theft device.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. A pumping unit pressure bar anti-theft device is characterized by comprising a pressure plate, a gland, an anti-theft lock mechanism and a connecting mechanism; wherein the content of the first and second substances,
the pressing cover is positioned on the pressing plate, and an anti-theft lock mechanism groove and a connecting mechanism cavity are formed in the pressing cover;
the anti-theft lock mechanism comprises an anti-theft screw, a shell, an eccentric sleeve and an upper cover;
the anti-theft screw is in threaded fit with the pressure plate, and extends from the pressure plate towards the direction of the anti-theft lock mechanism groove;
the shell is provided with a jogged section and a matched section which are sequentially arranged from bottom to top, the jogged section is in interference fit with the anti-theft lock mechanism groove so that the shell is fixedly embedded in the anti-theft lock mechanism groove, and the inner wall of the matched section is provided with a lower limiting bulge and an upper limiting bulge;
the eccentric sleeve comprises a thread matching part and a shell matching part, the thread matching part is in thread matching with the anti-theft screw, the shell matching part is arranged around the anti-theft screw, a central shaft of the shell matching part is not collinear with a central shaft of the anti-theft screw, and the shell matching part is positioned between the lower limiting bulge and the upper limiting bulge;
the upper cover is matched with one side of the matching section, which is far away from the embedding section, so as to seal an opening on one side of the matching section, which is far away from the embedding section;
the connecting mechanism comprises a connecting screw rod and a locking nut;
the two ends of the connecting screw rod are respectively in threaded connection with the oil pumping unit fixing reserved part and the pressing plate, the connecting screw rod extends from the pressing plate to the connecting mechanism cavity, the connecting screw rod comprises a core piece and a sleeve piece, the core piece is made of ceramic materials or cement materials, the sleeve piece is arranged around the core piece, and the wall thickness of the sleeve piece is smaller than the diameter of the core piece;
the locking nut is in threaded connection with the connecting screw rod, and the locking nut is located in the connecting mechanism cavity.
2. The anti-theft device for the oil pumping unit pressure bar according to claim 1, wherein the embedded section comprises an embedded main body and a spring plate, and the outer wall of the embedded main body is matched with the inner wall of the anti-theft lock mechanism groove;
the spring plate extends from the inner wall of the embedded main body towards the anti-theft screw rod, the spring plate is located at one end, close to the pressing plate, of the embedded main body, and gaps are formed among the spring plate, the pressing plate and the lower limiting bulges.
3. The anti-theft device for the pumping unit pressure bar according to claim 1, wherein gaps are formed between the housing fitting part and the lower limiting protrusion, between the upper limiting protrusion and the inner wall of the housing;
the lower limiting bulge and the upper limiting bulge are arranged around the anti-theft screw rod, and the lower limiting bulge is abutted to the outer wall of the thread matching part.
4. The pumping unit pressure bar anti-theft device of claim 1, wherein the anti-theft lock mechanism further comprises a flexible gasket;
the flexible gasket is located between the top end of the anti-theft screw and the upper cover, and the flexible gasket abuts against the anti-theft screw and the upper cover.
5. The device according to claim 1, wherein the anti-theft lock mechanism further comprises an upper cover locking assembly and an upper cover removing member;
the upper cover locking assembly comprises a locking ball and an elastic piece, a locking groove is formed in the side wall, facing the matching section, of the upper cover, a matching groove is formed in the matching section, the locking ball is in sliding fit with the locking groove and the matching groove, and the elastic piece is installed in the locking groove to provide elastic force towards the matching groove for the locking ball;
the upper cover-removing member is made of a magnetic material, and the upper cover-removing member is configured to magnetically attract the locking ball so that the locking ball moves in a direction away from the fitting groove.
6. The device according to claim 1, wherein the sleeve is made of metal, and a plurality of fitting grooves are formed on an outer surface of the core member.
7. The anti-theft device for the pumping unit pressure bar according to any one of claims 1 to 6, wherein the connecting mechanism further comprises a mating nut, the mating nut is in threaded connection with the connecting screw rod, and the mating nut is located in the connecting mechanism cavity;
the lock nut is adjacent to the pressure plate relative to the mating nut, and a gap is provided between the lock nut and the pressure plate and between the lock nut and the mating nut.
8. The anti-theft device for the pumping unit pressure bar according to claim 7, wherein the distance between the lock nut and the pressure plate is smaller than the distance between the mating nut and the lock nut.
9. The anti-theft device for the pressure bar of the oil pumping unit according to claim 7, wherein a vibration damping opening is formed in a wall of the connecting mechanism cavity, which is far away from the pressure plate, the top end of the connecting screw rod is located in the connecting mechanism cavity, and the top end of the connecting screw rod is arranged corresponding to the vibration damping opening;
the matching nut is positioned at the end part of the connecting screw rod.
10. The anti-theft device for the pumping unit pressure bar according to claim 7, wherein the mating nut is a locknut.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010659094.9A CN111794715B (en) | 2020-07-09 | 2020-07-09 | Lever anti-theft device is pressed to beam-pumping unit |
| PCT/CN2021/103289 WO2022007670A1 (en) | 2020-07-09 | 2021-06-29 | Anti-theft apparatus for oil pumping unit pressure lever |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010659094.9A CN111794715B (en) | 2020-07-09 | 2020-07-09 | Lever anti-theft device is pressed to beam-pumping unit |
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| Publication Number | Publication Date |
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| CN111794715A CN111794715A (en) | 2020-10-20 |
| CN111794715B true CN111794715B (en) | 2022-06-24 |
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| CN202010659094.9A Active CN111794715B (en) | 2020-07-09 | 2020-07-09 | Lever anti-theft device is pressed to beam-pumping unit |
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| CN (1) | CN111794715B (en) |
| WO (1) | WO2022007670A1 (en) |
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| CN111794715B (en) * | 2020-07-09 | 2022-06-24 | 三亚乾泰石油机械技术有限公司 | Lever anti-theft device is pressed to beam-pumping unit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2529004Y (en) * | 2002-03-04 | 2003-01-01 | 冯长富 | Connecting for anti-theft bolt and mounting and dismounting tool for it |
| CN202628043U (en) * | 2012-06-26 | 2012-12-26 | 王彪 | Anti-theft device for press lever of oil pumping unit |
| CN203856860U (en) * | 2014-05-30 | 2014-10-01 | 国网四川省电力公司双流县供电分公司 | Anti-detaching protective device for bolt |
| CN204677168U (en) * | 2015-06-03 | 2015-09-30 | 任斌 | A kind of anti-theft device of oil production equipment |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012203520A1 (en) * | 2012-03-06 | 2013-09-12 | Mahle International Gmbh | mounting assembly |
| CN203685133U (en) * | 2013-07-12 | 2014-07-02 | 盘锦禹帝科技实业有限公司 | Anti-theft pressure bar device for beam-pumping unit |
| CN207316374U (en) * | 2017-08-31 | 2018-05-04 | 中国石油大学(北京) | A kind of pumping unit presses the antitheft foundation bolt of thick stick |
| WO2019045156A1 (en) * | 2017-08-31 | 2019-03-07 | 주식회사 코어볼트 | Double nut including loosening prevention member |
| CN212225187U (en) * | 2020-07-09 | 2020-12-25 | 三亚乾泰石油机械技术有限公司 | Lever anti-theft device is pressed to beam-pumping unit |
| CN111794713B (en) * | 2020-07-09 | 2022-06-24 | 三亚乾泰石油机械技术有限公司 | Lever anti-theft device is pressed to beam-pumping unit |
| CN111794715B (en) * | 2020-07-09 | 2022-06-24 | 三亚乾泰石油机械技术有限公司 | Lever anti-theft device is pressed to beam-pumping unit |
| CN111794714A (en) * | 2020-07-09 | 2020-10-20 | 三亚乾泰石油机械技术有限公司 | Lever anti-theft device is pressed to beam-pumping unit |
-
2020
- 2020-07-09 CN CN202010659094.9A patent/CN111794715B/en active Active
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2021
- 2021-06-29 WO PCT/CN2021/103289 patent/WO2022007670A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2529004Y (en) * | 2002-03-04 | 2003-01-01 | 冯长富 | Connecting for anti-theft bolt and mounting and dismounting tool for it |
| CN202628043U (en) * | 2012-06-26 | 2012-12-26 | 王彪 | Anti-theft device for press lever of oil pumping unit |
| CN203856860U (en) * | 2014-05-30 | 2014-10-01 | 国网四川省电力公司双流县供电分公司 | Anti-detaching protective device for bolt |
| CN204677168U (en) * | 2015-06-03 | 2015-09-30 | 任斌 | A kind of anti-theft device of oil production equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022007670A1 (en) | 2022-01-13 |
| CN111794715A (en) | 2020-10-20 |
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