Anti-drop shifting device for balance block of oil pumping unit

Abstract

The utility model relates to the technical field of oil pumping units, and discloses an oil pumping unit balance block anti-disengagement shifting device which comprises a crank body, a balance block, a jack and a positioning and fixing tool, T-shaped grooves are formed in the middles of the two sides of the crank body, limiting grooves are formed in the front side of the crank body, limiting rods are fixed to inner cavities of the limiting grooves, a plurality of second limiting holes are formed in the limiting rods, and the limiting holes are formed in the limiting rods. A second positioning hole is formed in the positioning and fixing tool, a fixing frame is fixed to the wall face of the top of the positioning and fixing tool, a reset spring is fixed to an inner cavity of the fixing frame, an inserting groove is formed in the wall face of the fixing frame, and an inserting rod is fixed to the other end of the reset spring. According to the utility model, the positioning rod is inserted into the limiting hole I, the limiting hole II and the through hole to limit the sliding block and the insertion end of the insertion rod, and the insertion rod and the reset spring are matched to release the limitation of the insertion end of the insertion rod from the positioning hole I, so that the maintenance efficiency is improved, and the workload of operators is reduced.

Description

Technical Field

[0001] This utility model relates to the field of oil pumping unit technology, and in particular to an anti-displacement device for the balance block of an oil pumping unit. Background Technology

[0002] An oil pumping unit is a machine used to extract oil, commonly known as a "nodding donkey". It uses pressure to bring oil out of the well. In the process of oil extraction, crank-balanced oil pumping units are usually used. During operation, the oil pumping unit is subjected to alternating loads. The main way to ensure the smooth operation of the oil pumping unit motor is to adjust the position of the balance block on the crank, thereby reducing power consumption. Therefore, balancing is a frequent task.

[0003] A search revealed a public disclosure (announcement) number: CN220748228U, which discloses a counterweight anti-displacement adjustment device for an oil pumping unit. The device includes a crank and a counterweight. The counterweight is fixed to both sides of the crank by bolts and locking blocks. The device also includes a positioning and fixing fixture and a jack. The positioning and fixing fixture includes a flat plate with second teeth on both sides of its lower part, a vertical plate at the front end, stops on both sides of the lower part of the vertical plate, a groove in the middle of the upper part of the vertical plate, a semi-annular groove in the middle of the flat plate near its rear end, and a shim groove located above the semi-annular groove away from the rear end of the flat plate. The positioning and fixing fixture is fixed to the crank by fixture fixing bolts. This technical solution, which combines the positioning and fixing fixture with a jack to adjust the position of the counterweight, is simple in structure, convenient to operate, safe, and improves the efficiency of anti-displacement adjustment of the counterweight.

[0004] In the aforementioned existing technical solutions, the positioning and fixing fixture is fixed to the crank by fixture fixing bolts. This means that during adjustment or maintenance, the operator needs to manually disassemble and reinstall the bolts. If the installation space is limited or the crank structure is complex, disassembling and reinstalling the bolts may take a long time, which not only affects maintenance efficiency but may also increase the workload of the operator, thereby affecting the overall operating efficiency of the equipment.

[0005] Therefore, we propose a device to prevent the balance block of an oil pumping unit from detaching and shifting. Utility Model Content

[0006] The present invention aims to solve the technical problems existing in the prior art and provide a device for preventing the balance block of an oil pumping unit from falling off and shifting.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a pumping unit balance block anti-displacement device, comprising a crank body, a balance block, a jack, and a positioning and fixing fixture. T-grooves are provided in the middle of both sides of the crank body, and a limiting groove is provided on the front side of the crank body. A limiting rod is fixed in the inner cavity of the limiting groove, and multiple limiting holes are provided on the limiting rod. A slider is slidably connected to the limiting groove, and through holes are provided on both the front and rear walls of the slider. Positioning holes are provided on the positioning and fixing fixture, and a fixing frame is fixed on the top wall of the positioning and fixing fixture. A return spring is fixed in the inner cavity of the fixing frame, and a slot is provided on the wall of the fixing frame. An insertion rod is fixed at the other end of the return spring, and a limiting hole is provided on the front wall of the insertion end of the insertion rod. Multiple positioning holes are provided on the wall of the inner cavity of the T-grooves, and positioning rods are inserted into the inner cavities of the limiting holes, limiting holes, and through holes.

[0008] Preferably, the insertion rod has a T-shaped structure, and the insertion end of the insertion rod is compatible with the second positioning hole.

[0009] Preferably, the slot is adapted to the positioning hole 2.

[0010] Preferably, the positioning hole is adapted to the insertion end of the plug.

[0011] This invention provides a device for preventing the balance block of an oil pumping unit from slipping or shifting. It has the following beneficial effects:

[0012] This is a pumping unit balance block anti-displacement device. It limits the insertion end of the slider and the insertion rod by inserting the positioning rod into the limiting hole one, limiting hole two and through hole. The insertion end of the insertion rod is released from the limiting hole by the cooperation of the insertion rod and the return spring. Then, the positioning and fixing fixture can be quickly installed and disassembled, thereby improving maintenance efficiency and reducing the workload of operators. Attached Figure Description

[0013] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0014] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 2 This is a schematic diagram showing the disassembled slider and positioning rod of this utility model;

[0017] Figure 3 This is a side view of the structure of this utility model;

[0018] Figure 4 This is a schematic diagram showing the details of the fixed frame structure of this utility model.

[0019] Legend:

[0020] 1. Crank body; 101. Gear; 2. T-slot; 201. Positioning hole one; 3. Jack; 4. Balance block; 5. Positioning and fixing fixture; 501. Positioning hole two; 6. Fixing frame; 601. Return spring; 602. Slot; 603. Insert rod; 604. Limiting hole one; 7. Limiting groove; 701. Limiting rod; 702. Limiting hole two; 703. Slider; 704. Through hole; 8. Positioning rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example: A device for preventing the counterweight of an oil pumping unit from slipping or shifting, such as... Figures 1-4As shown, the device includes a crank body 1 and a balance block 4. The balance block 4 is fixed to both sides of the crank body 1 by bolts. T-slots 2 are provided in the middle of both sides of the crank body 1. Teeth 101 are provided on the top of both sides of the crank body 1. The anti-displacement adjustment device for the balance block of the pumping unit also includes a jack 3 and a positioning and fixing fixture 5. A limiting groove 7 corresponding to the teeth 101 is opened on the front wall of the crank body 1. A limiting rod 701 is fixedly connected to the inner cavity of the limiting groove 7. Multiple limiting holes 702 are opened on the limiting rod 701. A slider 703 is slidably connected to the limiting groove 7. Through holes 704 adapted to the limiting holes 702 are opened on both the front and rear walls of the slider 703. A positioning hole 501 is opened on the positioning and fixing fixture 5. A fixed frame 6 is fixedly connected, and a return spring 601 is fixedly connected to the inner cavity of the fixed frame 6. A slot 602 is provided on the wall of the fixed frame 6 near the positioning and fixing fixture 5 and at a position that matches the second positioning hole 501. The other end of the return spring 601 is fixedly connected to a T-shaped insertion rod 603. The insertion end of the insertion rod 603 matches the second positioning hole 501. A limiting hole 604 that matches the through hole 704 is provided on the front side wall of the insertion end of the insertion rod 603. Multiple positioning holes 201 that match the insertion end of the insertion rod 603 are provided on the inner wall of the T-shaped slot 2. A positioning rod 8 is inserted into the inner cavity of the limiting hole 604, the second limiting hole 702 and the through hole 704. The positioning rod 8 limits the slider 703 and the insertion end of the insertion rod 603.

[0023] The working principle of this utility model:

[0024] When it is necessary to disassemble the positioning and fixing fixture 5 during use, the positioning rod 8 is taken out. At this time, the insertion end of the positioning rod 8 is released from the limit hole 1 604, the limit hole 2 702 and the inner cavity of the through hole 704. The insertion rod 603 is turned upward. At this time, the return spring 601 is compressed and the insertion end of the insertion rod 603 is released from the limit hole 1 201, so that the positioning and fixing fixture 5 can be quickly installed and disassembled.

[0025] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0026] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0027] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for preventing the dislocation of a balance block of a pumping unit, comprising a crank body (1), a balance block (4), a jack (3) and a positioning fixture (5), characterized in that: The crank body (1) is provided with a T-shaped groove (2) in the middle of both sides, a limiting groove (7) is formed in the front side of the crank body (1), a limiting rod (701) is fixed in the inner cavity of the limiting groove (7), a plurality of limiting holes (702) are formed in the limiting rod (701), a sliding block (703) is slidably connected to the limiting groove (7), a through hole (704) is formed in the front and rear walls of the sliding block (703), a positioning hole (501) is formed in the positioning fixing tool (5), a fixed frame (6) is fixed to the top wall of the positioning fixing tool (5), a reset spring (601) is fixed in the inner cavity of the fixed frame (6), a slot (602) is formed in the wall of the fixed frame (6), a plug rod (603) is fixed to the other end of the reset spring (601), a limiting hole (604) is formed in the front side wall of the plug-in end of the plug rod (603), a plurality of positioning holes (201) are formed in the wall of the inner cavity of the T-shaped groove (2), and the inner cavities of the limiting hole (604), the limiting hole (702) and the through hole (704) are inserted with a positioning rod (8).

2. The anti-displacement device for the balance block of a pumping unit according to claim 1, characterized in that: The plug rod (603) is a T-shaped structure, and the plug-in end of the plug rod (603) is matched with the positioning hole (501).

3. The anti-displacement device for the balance block of a pumping unit according to claim 1, characterized in that: The slot (602) is matched with the positioning hole (501).

4. The anti-displacement device for the balance block of a pumping unit according to claim 1, characterized in that: The positioning hole (201) is matched with the plug-in end of the plug rod (603).

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