Unloading instrument special for oil exploitation pumping unit

Abstract

The utility model provides an unloading instrument special for an oil exploitation pumping unit. The unloading instrument comprises lifting mechanism sets symmetrically arranged in a base body and coaxial nut sets coaxial with the lifting mechanism sets. Wherein the lifting mechanism set comprises a first wedge-shaped ejector block, a second wedge-shaped ejector block, a first wedge-shaped ejector rod and a second wedge-shaped ejector rod, and the coaxial nut set comprises a first coaxial nut and a second coaxial nut; the first wedge-shaped ejector block is slidably clamped with a clamping strip at one end of the first wedge-shaped ejector rod through a clamping groove, and the other end of the first wedge-shaped ejector rod is in threaded connection with the first coaxial nut; the second wedge-shaped ejector block is clamped with a clamping strip at one end of the second wedge-shaped ejector rod in a sliding mode through the clamping groove, and the other end of the second wedge-shaped ejector rod is connected to the second coaxial nut in a threaded mode. According to the technical scheme, the effect of improving the replacement efficiency of the load sensor can be achieved while it is ensured that the load sensor of the oil pumping unit is rapidly and safely replaced.

Description

Technical Field

[0001] This application relates to the technical field of load unloading, and particularly relates to a special unloading instrument for oil extraction pumping units. Background Art

[0002] In the oil extraction industry, pumping units are indispensable important equipment for pumping underground oil to the ground. However, as the mining process progresses, pumping units and their supporting equipment often bear huge loads. Especially when performing maintenance, repair, or component replacement, it is necessary to safely and efficiently unload these loads.

[0003] Although some existing unloading devices have improved the unloading efficiency to a certain extent, there are still many deficiencies. In the prior art, when replacing load sensors, hydraulic jacks are generally used to overcome heavy loads to replace the sensors. When the jack approaches the load limit, the resistance is huge, and the labor intensity suddenly increases. Due to the narrow space, only a micro hydraulic cylinder can be used to overcome the huge load. However, increasing the hydraulic pressure is likely to cause the cylinder to burst and the oil circuit to rupture, posing a safety hazard. Moreover, under heavy load conditions, the leakage of the hydraulic cylinder is likely to cause the cylinder to lose pressure, the cylinder cannot self-lock, and an instantaneous load impact is generated, posing a safety hazard to on-site inspection and maintenance personnel. Summary of the Utility Model

[0004] The purpose of the present utility model is to provide a special unloading instrument for oil extraction pumping units, which can reduce the labor intensity of replacing load sensors of pumping units, ensure the quick and safe replacement of load sensors of pumping units, and achieve the effect of improving the replacement efficiency of load sensors.

[0005] To achieve the above purpose, this application is realized through the following technical solutions, specifically including: a lifting mechanism group symmetrically arranged inside the base body, and a coaxial nut group coaxial with the lifting mechanism group; wherein, the lifting mechanism group includes a first wedge-shaped top block, a second wedge-shaped top block, a first wedge-shaped top rod, and a second wedge-shaped top rod, and the coaxial nut group includes a first coaxial nut and a second coaxial nut; one end of the first wedge-shaped top rod is slidably and detachably connected to the first wedge-shaped top block through a clamping groove and a clamping strip, and the other end of the first wedge-shaped top rod is threadedly connected to the first coaxial nut; one end of the second wedge-shaped top rod is slidably and detachably connected to the second wedge-shaped top block through the clamping groove and the clamping strip, and the other end of the second wedge-shaped top rod is threadedly connected to the second coaxial nut.

[0006] To achieve the power transmission of the unloading instrument, as an option for the special unloading instrument for oil extraction pumping units of this application, the unloading instrument further includes a worm and a turbine arranged inside the base body, wherein the spiral teeth of the worm mesh with the turbine.

[0007] To drive the worm to rotate, as an option for the special unloading instrument of the oil extraction pumping unit in this application, the unloading instrument further includes a ratchet joint, which is arranged on one side of the base body and connected to one end of the worm.

[0008] To transmit the power of the turbine rotation to the driving gear, as an option for the special unloading instrument of the oil extraction pumping unit in this application, the unloading instrument further includes a main shaft gear arranged inside the base body. The main shaft gear includes a driving gear and a main gear shaft, and the turbine is arranged on the main gear shaft.

[0009] To achieve further distribution and transmission of power, as an option for the special unloading instrument of the oil extraction pumping unit in this application, the unloading instrument further includes a first secondary shaft gear and a second secondary shaft gear arranged inside the base body. The first secondary shaft gear includes a first driven gear and a first secondary gear shaft, and the second secondary shaft gear includes a second driven gear and a second secondary gear shaft; wherein, the driving gear, the first driven gear, and the second driven gear are meshed in sequence.

[0010] To enable the coaxial nut to rotate under the action of power, as an option for the special unloading instrument of the oil extraction pumping unit in this application, the unloading instrument further includes a third driven gear arranged on the first coaxial nut and a fourth driven gear arranged on the second coaxial nut, and the third driven gear is meshed with the driving gear, and the fourth driven gear is meshed with the second driven gear.

[0011] To facilitate the lifting of the wedge-shaped top block and the telescoping of the wedge-shaped ejector rod, as an option for the special unloading instrument of the oil extraction pumping unit in this application, one end of the base body is set as a U-shaped structure, and openings are respectively arranged on both sides of the U-shaped structure.

[0012] To facilitate the movement and fixation of the unloading instrument, as an option for the special unloading instrument of the oil extraction pumping unit in this application, a handle and a lifting rod are respectively arranged on the upper and lower sides of the base body.

[0013] The beneficial effects of this application are as follows:

[0014] The special unloading instrument for oil extraction pumping units provided by the technical solution of this application includes: a lifting mechanism group symmetrically arranged inside the base body, and a coaxial nut group coaxial with the lifting mechanism group; wherein, the lifting mechanism group includes a first wedge-shaped top block, a second wedge-shaped top block, a first wedge-shaped ejector rod and a second wedge-shaped ejector rod, and the coaxial nut group includes a first coaxial nut and a second coaxial nut; the first wedge-shaped top block is slidably clamped with a clamping strip at one end of the first wedge-shaped ejector rod through a clamping groove, and the other end of the first wedge-shaped ejector rod is threadedly connected to the first coaxial nut; the second wedge-shaped top block is slidably clamped with a clamping strip at one end of the second wedge-shaped ejector rod through the clamping groove, and the other end of the second wedge-shaped ejector rod is threadedly connected to the second coaxial nut. When the power transmitted by the worm and gear mechanism drives the driving gear to start rotating through the ratchet joint, the first driven gear, the second driven gear, the third driven gear and the fourth driven gear meshing with the driving gear also start to rotate. At this time, the first coaxial nut and the second coaxial nut start to rotate under the action of the power transmitted by the gears. Therefore, the wedge-shaped ejector rod will expand and contract along with the rotation direction of the coaxial nut. When the wedge-shaped ejector rod is in the extended state, the wedge-shaped top block clamped at one end of the wedge-shaped ejector rod through the clamping groove will eject from a preset opening on the base body, so as to play a load-bearing role. When the wedge-shaped ejector rod is in the contracted state, the wedge-shaped top block clamped at one end of the wedge-shaped ejector rod through the clamping groove will retract from a preset opening on the base body. Thus, the replacement of the load sensor can be realized, and the technical solution of this application is faster, more labor-saving and safer, and can achieve the effects of improving the working efficiency of installing and replacing the load sensor and improving production safety. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of a special unloading instrument for oil extraction pumping units;

[0016] Figure 2 It is a schematic internal structure diagram of a special unloading instrument for oil extraction pumping units;

[0017] Figure 3 For Figure 1 Internal sectional view effect diagram of the first wedge-shaped top block ejecting in the unloading instrument;

[0018] Figure 4 It is a schematic effect diagram of a special unloading instrument for oil extraction pumping units;

[0019] Description of the Reference Numerals:

[0020] 100, base body; 101, opening; 102, handle; 103, lifting rod;

[0021] 200, lifting mechanism group; 201, first wedge-shaped top block; 202, second wedge-shaped top block; 203, first wedge-shaped ejector rod; 204, second wedge-shaped ejector rod;

[0022] 300, coaxial nut set; 301, first coaxial nut; 3011, third driven gear; 302, second coaxial nut; 3021, fourth driven gear;

[0023] 400, worm

[0024] 500, turbine

[0025] 600, ratchet joint

[0026] 700, main shaft gear; 701, driving gear; 702, main gear shaft

[0027] 800, first secondary shaft gear; 801, first driven gear; 802, first secondary gear shaft

[0028] 900, second secondary shaft gear; 901, second driven gear; 902, second secondary gear shaft

[0029] 1000, load sensor Detailed implementation manners

[0030] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0032] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0033] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity, specific order or primary-secondary relationship of the indicated technical features.

[0034] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "one end", "the other end", "upper", "lower", "both sides", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the embodiments of the present application.

[0035] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "arranged", "provided with", "installed", "connected", "joined", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0036] The inventor of the present application proposed a special unloading instrument for an oil extraction pumping unit. Refer to Figures 1 - 3 , Figure 1 which is a schematic structural diagram of a special unloading instrument for an oil extraction pumping unit provided by an embodiment of the present application. Figure 2 which is an internal structural diagram of a special unloading instrument for an oil extraction pumping unit provided by an embodiment of the present application. Figure 3 which is provided by an embodiment of the present application Figure 1 Internal sectional view effect diagram of the first wedge-shaped top block being ejected in the unloading instrument. Figure 4 which is an effect schematic diagram of a special unloading instrument for an oil extraction pumping unit provided by an embodiment of the present application.

[0037] Refer to Figures 1 - 2, the unloading instrument dedicated to oil extraction pumping units provided by this application includes: a lifting mechanism group 200 symmetrically arranged inside the base body 100, and a coaxial nut group 300 coaxial with the lifting mechanism group 200; wherein, the lifting mechanism group 200 includes a first wedge-shaped top block 201, a second wedge-shaped top block 202, a first wedge-shaped ejector rod 203 and a second wedge-shaped ejector rod 204, and the coaxial nut group 300 includes a first coaxial nut 301 and a second coaxial nut 302; one end of the first wedge-shaped ejector rod 203 is slidably clamped with a clamping strip at one end of the first wedge-shaped ejector rod 203 through a clamping groove, and the other end of the first wedge-shaped ejector rod 203 is threadedly connected to the first coaxial nut 301; one end of the second wedge-shaped top block 202 is slidably clamped with a clamping strip at one end of the second wedge-shaped ejector rod 204 through the clamping groove, and the other end of the second wedge-shaped ejector rod 204 is threadedly connected to the second coaxial nut 302. In this application, by driving the rotation of the coaxial nut group 300, the telescopic movement of the first wedge-shaped ejector rod 203 and the second wedge-shaped ejector rod 204 is realized, so as to further realize the function of the up and down movement of the first wedge-shaped top block 201 and the second wedge-shaped top block 202.

[0038] Continue to refer to Figures 1 - 2 , in a further embodiment of this application, the unloading instrument further includes a worm 400 and a turbine 500 arranged inside the base body 100, wherein the spiral teeth of the worm 400 are meshed with the turbine 500, and the unloading instrument further includes a ratchet joint 600, and the ratchet joint 600 is arranged on one side of the base body 100 and is connected to one end of the worm 400. Optionally, during the working process, the ratchet joint 600 drives the worm 400 to rotate through driving, and the worm 400 is meshed with the turbine 500 through the spiral teeth to transmit the rotational movement to the turbine 500.

[0039] Continue to refer to Figures 1 - 2, in a further embodiment of the present application, the unloader further includes a main shaft gear 700 disposed inside the base body 100. The main shaft gear 700 includes a driving gear 701 and a main gear shaft 702, and the turbine 500 is disposed on the main gear shaft 702. When the turbine 500 starts to rotate, power transmission is achieved through the main gear shaft 702, thereby driving the driving gear 701 to rotate. Further, the unloader further includes a first secondary shaft gear 800 and a second secondary shaft gear 900 disposed inside the base body 100. The first secondary shaft gear 800 includes a first driven gear 801 and a first secondary gear shaft 802, and the second secondary shaft gear 900 includes a second driven gear 901 and a second secondary gear shaft 902. Among them, the driving gear 701, the first driven gear 801, and the second driven gear 901 are sequentially engaged. When the driving gear 701 starts to rotate, the first driven gear 801 and the second driven gear 901 also start to rotate synchronously, thereby achieving power transmission.

[0040] Further, continue to refer to Figure 3 , the unloader further includes a third driven gear 3011 disposed on the first coaxial nut 301 and a fourth driven gear 3021 disposed on the second coaxial nut 302. The third driven gear 3011 is engaged with the driving gear 701, and the fourth driven gear 3021 is engaged with the second driven gear 901. Through the rotation of each gear, the first coaxial nut 301 and the second coaxial nut 302 start to rotate. Through the internal threads of the first coaxial nut 301 and the second coaxial nut 302 and the external threads of the first wedge-shaped ejector rod 203 and the second wedge-shaped ejector rod 204 cooperating with each other in rotation, the telescoping of the first wedge-shaped ejector rod 203 and the second wedge-shaped ejector rod 204 is achieved.

[0041] Optionally, a ball screw drive may also be used between the first coaxial nut 301 and the second coaxial nut 302 and the first wedge-shaped ejector rod 203 and the second wedge-shaped ejector rod 204 to achieve the telescoping of the first wedge-shaped ejector rod 203 and the second wedge-shaped ejector rod 204. Specifically, it can be selected according to requirements, and the technical solution of the present application is not limited.

[0042] Continue to refer to Figures 1 - 2, in a further embodiment of the present application, one end of the base body 100 is provided with a U-shaped structure, and openings 101 are respectively provided on both sides of the U-shaped structure. When replacing the load sensor of the unloading instrument, the load sensor is placed inside the U-shaped structure, and the power transmission is realized through the ratchet joint 600, the worm 400 and the turbine 500. When the driving gear 701, the first driven gear 801 and the second driven gear 901 drive the third driven gear 3011 and the fourth driven gear 3021 to rotate, the coaxial nut group 300 rotates, so that the first wedge ejector rod 203 and the second wedge ejector rod 204 are telescopic. When the first wedge ejector rod 203 and the second wedge ejector rod 204 are in the extended state, the first wedge top block 201 and the second wedge top block 202 clamped at one end of the first wedge ejector rod 203 and the second wedge ejector rod 204 through the clamping groove will be ejected from the pre-set openings 101 on the base body, so as to play a load-bearing role. For the specific effect, refer to Figure 3 , when the first wedge ejector rod 203 and the second wedge ejector rod 204 are in the retracted state, the first wedge top block 201 and the second wedge top block 202 clamped at one end of the first wedge ejector rod 203 and the second wedge ejector rod 204 through the clamping groove will be retracted from the pre-set openings 101 on the base body, so as to realize the rapid, labor-saving and safe replacement of the load sensor, and achieve the effects of improving the working efficiency of the installation and replacement of the load sensor and improving the production safety. For the specific effect diagram, refer to Figure 4 .

[0043] Optionally, handles 102 and lifting rods 103 are respectively provided on the upper and lower sides of the base body 100, which are convenient for moving and fixing the unloading instrument.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A special unloading instrument for oil production pumping unit, characterized in that: include: A lifting mechanism group (200) symmetrically arranged inside the base body (100), and a coaxial nut group (300) coaxial with the lifting mechanism group (200); The lifting mechanism group (200) comprises a first wedge-shaped top block (201), a second wedge-shaped top block (202), a first wedge-shaped top rod (203) and a second wedge-shaped top rod (204); and the coaxial nut group (300) comprises a first coaxial nut (301) and a second coaxial nut (302); The first wedge-shaped top block (201) is slidably engaged with a engaging strip at one end of the first wedge-shaped top rod (203) through a engaging groove, and the other end of the first wedge-shaped top rod (203) is threadedly connected to the first coaxial nut (301); the second wedge-shaped top block (202) is slidably engaged with a engaging strip at one end of the second wedge-shaped top rod (204) through the engaging groove, and the other end of the second wedge-shaped top rod (204) is threadedly connected to the second coaxial nut (302).

2. The special unloading instrument for oil production pumping unit according to claim 1 is characterized in that: The unloading device further comprises a worm (400) and a turbine (500) arranged inside the base body (100), wherein the spiral teeth of the worm (400) are meshed with the turbine (500).

3. The special unloading instrument for oil production pumping unit according to claim 2 is characterized in that: The unloading device further comprises a ratchet joint (600), wherein the ratchet joint (600) is arranged on one side of the base body (100) and is connected to one end of the worm (400).

4. The special unloading instrument for oil production pumping unit according to claim 2 is characterized in that: The unloading instrument further comprises a main shaft gear (700) arranged inside the base body (100), the main shaft gear (700) comprises a driving gear (701) and a main gear shaft (702), and the turbine (500) is arranged on the main gear shaft (702).

5. The special unloading instrument for oil production pumping unit according to claim 4 is characterized in that: The unloading instrument further comprises a first slave shaft gear (800) and a second slave shaft gear (900) arranged inside the base body (100), wherein the first slave shaft gear (800) comprises a first driven gear (801) and a first slave gear shaft (802), and the second slave shaft gear (900) comprises a second driven gear (901) and a second slave gear shaft (902); Wherein, the driving gear (701), the first driven gear (801) and the second driven gear (901) are meshed in sequence.

6. The special unloading instrument for oil production pumping unit according to claim 5, characterized in that: The unloading device further comprises a third driven gear (3011) arranged on the first coaxial nut (301), and a fourth driven gear (3021) arranged on the second coaxial nut (302), wherein the third driven gear (3011) is meshed with the driving gear (701), and the fourth driven gear (3021) is meshed with the second driven gear (901).

7. The special unloading instrument for oil production pumping unit according to claim 1 is characterized in that: One end of the base body (100) is arranged as a U-shaped structure, and openings (101) are respectively arranged on both sides of the U-shaped structure.

8. The special unloading instrument for oil production pumping unit according to claim 1, characterized in that: The base body (100) is provided with a handle (102) and a lifting rod (103) on the upper and lower sides respectively.

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