Spanner stop device

Abstract

The present application relates to the mechanical technical field, it relates to a spanner limiting device, it includes: bottom plate, the lower side middle part of bottom plate is opened with thread groove, the upper end middle part of bottom plate is fixedly connected with connecting piece, the front and back side middle part of connecting piece is opened with observation port, the middle part of connecting piece is opened with inserting hole, the upper side middle part of connecting piece is opened with connecting hole, the inner chamber of connecting hole is inserted with screw through thread in the upper part, the lower part of inner chamber of connecting hole is placed with clamping bead, the upper part of clamping bead is equipped with connecting block, and the upper end of connecting block and screw are equipped with spring;Fixed part, the right end outside of fixed part is connected with handle through pivot.The overall structure of the equipment, the bottom of fixed part should be in full contact with the special key wrench upper plane, limit the position of special key wrench to move up, so as to avoid the wrench to knock off, reduce the labor intensity of workers, improve the oil well oil production rate, and eliminate personal injury.

Description

Technical Field

[0001] This invention relates to the field of mechanical technology, and more specifically, to a wrench limiting device. Background Technology

[0002] Currently, in the field of oilfield oil and gas production technology, during the production process of pumping units, due to changes in output and adjustments to production parameters, the balance rate of the pumping unit may not meet the standards, necessitating balancing operations to restore the well's balance rate. Balancing operations involve loosening and tightening the balancing block fixing nuts, moving the balancing blocks to achieve the required balance rate. In oilfield operations, the loosening and tightening of the balancing block fixing nuts typically involves using a specialized box wrench, which is then struck with a sledgehammer. However, due to the high operating position and limited space, the box wrench is frequently knocked off during this process. Operators must repeatedly retrieve the wrench, extending operation time, increasing labor intensity, reducing oil production efficiency, and posing a risk of personal injury if anyone is near the pumping unit.

[0003] To address this need, the present invention provides a wrench limiting device. Summary of the Invention

[0004] The purpose of this invention is to provide a wrench limiting device to improve the above-mentioned problems. To achieve this purpose, the technical solution adopted by this invention is as follows:

[0005] This application provides a wrench limiting device, including:

[0006] A base plate, wherein a threaded groove is formed in the middle of the lower side of the base plate, and a connector is fixedly connected to the middle of the upper end of the base plate;

[0007] A connector has an observation port in the middle of its front and rear sides, a through-hole in the middle of its middle, a connection hole in the middle of its upper side, a screw threaded into the upper part of the inner cavity of the connection hole, a retaining ball movably placed in the lower part of the inner cavity of the connection hole, a connecting block above the retaining ball, and a spring between the upper end of the connecting block and the screw.

[0008] The fastener has a handle connected to its right outer side via a pivot, and a fixed shaft fixedly connected to its left outer side. A circular groove is formed in the middle of the outer side of the fixed shaft.

[0009] Optionally, the fixed shaft is movably inserted into the insertion hole.

[0010] Optionally, the lower end of the connecting block is arc-shaped, the lower end surface of the connecting block is smooth, and the spring is inserted into the inside of the connecting hole.

[0011] Optionally, the lower part of the connecting hole is connected to the insertion hole, and the lower part of the retaining bead is inserted into the insertion hole.

[0012] Optionally, the fixing member is disc-shaped, and the right end of the fixing shaft is fixedly connected to the outer side of the left end of the fixing member.

[0013] Optionally, the fixed shaft is a polygonal metal shaft, and the insertion hole is a polygonal insertion hole.

[0014] The beneficial effects of this invention are as follows:

[0015] By manually holding the fixing shaft of the fastener and rotating it until the bottom of the fastener is aligned with the upper surface of the special box wrench, insert the fixing shaft into the insertion hole, ensuring the retaining ball engages with the circular retaining groove. The spring-loaded pressure on the retaining ball secures the fixing shaft. At this point, the bottom of the fastener should be in full contact with the upper surface of the special box wrench, preventing the wrench from shifting upwards, thus avoiding it falling off, reducing worker fatigue, increasing oil well productivity, and eliminating personal injury. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is an overall structural diagram of an embodiment of the present invention.

[0018] Figure 2 This is a cross-sectional view of an embodiment of the present invention.

[0019] Figure 3 This is an overall structural diagram of the fastener according to an embodiment of the present invention.

[0020] Marked in the diagram: 1. Base plate; 2. Connector; 3. Observation port; 4. Fixed shaft; 5. Fixing component; 6. Handle; 7. Screw; 8. Circular groove; 9. Connecting hole; 10. Connecting block; 11. Spring; 12. Clamping ball; 13. Insertion hole; 14. Threaded groove. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this invention, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] like Figures 1-3 As shown, this embodiment provides a wrench limiting device, including:

[0024] The base plate 1 has a threaded groove 14 in the middle of its lower side, and a connector 2 is fixedly connected to the middle of the upper end of the base plate 1. The connector 2 is a square metal piece that is symmetrically machined in the front, back, left, and right directions.

[0025] The connector 2 has an observation port 3 in the middle of its front and rear sides, which allows observation of the position of the fixed shaft 4. The connector 2 has a through insertion hole 13 in the middle and a connection hole 9 in the middle of its upper side. A screw 7 is threaded into the upper part of the inner cavity of the connection hole 9. The top of the screw 7 has a slotted groove for easy tightening with a flathead screwdriver. A retaining ball 12 is movably placed in the lower part of the inner cavity of the connection hole 9. The retaining ball 12 can rotate and move upward. The retaining ball 12 is a metal ball with a diameter that is the same as the diameter of the central hole at the top of the connection hole 9. The lower diameter of the connection hole 9 is smaller than the diameter of the retaining ball 12. A connecting block 10 is provided on the upper part of the retaining ball 12. A spring 11 is provided between the upper end of the connecting block 10 and the screw 7.

[0026] The fastener 5 has a handle 6 connected to its right outer side via a pivot shaft, and a fixing shaft 4 is fixedly connected to its left outer side. A circular groove 8 is formed in the middle of the outer side of the fixing shaft 4.

[0027] In this embodiment, the fixed shaft 4 is movably inserted into the insertion hole 13.

[0028] In this embodiment, the lower end of the connecting block 10 is arc-shaped and the lower end surface of the connecting block 10 is smooth. The spring 11 is inserted into the inside of the connecting hole 9. The spring 11 is always in a compressed state, and the function of the connecting block 10 can make the up-and-down movement of the ball 12 more stable.

[0029] In this embodiment, the lower part of the connecting hole 9 is connected to the insertion hole 13, and the lower part of the retaining bead 12 is inserted into the insertion hole 13. The retaining bead 12 can be inserted into the annular retaining groove 8 during the insertion of the fixed shaft 4, thereby positioning the fixed shaft 4 and preventing the fixed shaft 4 from shifting left or right.

[0030] In this embodiment, the fixing member 5 is disc-shaped, and the right end of the fixing shaft 4 is fixedly connected to the outer side of the left end of the fixing member 5. The position of the fixing member 5 can be rotated to position the external special box wrench. The distance between the lower end surface of the fixing member 5 and the lower end surface of the base plate 1 can be adjusted by rotating the fixing member 5 at different angles.

[0031] In this embodiment, the fixed shaft 4 is a polygonal metal shaft, and the insertion hole 13 is a polygonal insertion hole. When the fixed shaft 4 is inserted into the insertion hole 13, rotation of the fixed shaft 4 can be prevented.

[0032] Working Principle: When using the equipment, first remove the spare nut from the balancing block fixing bolt of the pumping unit well. Then, place the special box wrench on the fixing nut of the balancing block fixing bolt. Tighten the threaded groove 14 of the wrench limiting device base plate 1 into the external thread 2-3 turns on the upper part of the balancing block fixing bolt of the pumping unit well. At this point, ensure that there is enough space left at the bottom of the base plate 1 for the fixing nut to move upward during rotation. Manually hold the fixing shaft 4 of the fixing part 5 and rotate it until the bottom of the fixing part 5 is at the same height as the upper surface of the special box wrench. Insert the fixing shaft 4 into the insertion hole 13, and make the retaining ball 12 insert into the circular retaining groove 8. With the help of the pressure applied by the spring 11 to the retaining ball 12, the fixing shaft 4 is fixed. At this time, the bottom of the fixing part 5 should be in full contact with the upper surface of the special box wrench to limit the upward movement of the special box wrench.

[0033] When using a sledgehammer to strike the special box wrench to tighten or loosen the fixing nut on the pumping unit balance block fixing bolt, if it is necessary to adjust the position of the special box wrench handle during the process of striking the special box wrench with a sledgehammer, the fixing shaft 4 can be pulled out from the insertion hole 13, the special box wrench can be lifted up so that the head of the special box wrench reaches the circular metal body at the lower part of the base plate 1, the special box wrench handle can be rotated, and after adjusting the position, the special box wrench can be inserted into the fixing nut, the fixing shaft 4 can be inserted into the insertion hole 13, and the operation can be continued.

[0034] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0035] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A wrench limiting device, characterized in that, include: The base plate (1) has a threaded groove (14) in the middle of its lower side, and a connector (2) is fixedly connected to the middle of the upper end of the base plate (1). The connector (2) has an observation port (3) in the middle of the front and rear sides, a through insertion hole (13) in the middle of the connector (2), a connection hole (9) in the middle of the upper side of the connector (2), a screw (7) is threaded into the upper part of the inner cavity of the connection hole (9), a retaining bead (12) is movably placed in the lower part of the inner cavity of the connection hole (9), a connecting block (10) is provided on the upper part of the retaining bead (12), and a spring (11) is provided between the upper end of the connecting block (10) and the screw (7). The fastener (5) has a handle (6) connected to the outer side of the right end via a pivot, and a fixed shaft (4) is fixedly connected to the outer side of the left end of the fastener (5). A circular groove (8) is opened in the middle of the outer side of the fixed shaft (4). The fixed shaft (4) is a polygonal metal shaft, and the insertion hole (13) is a polygonal insertion hole; The locking bead (12) is a metal ball with a diameter that is the same as the diameter of the central hole at the top of the connecting hole (9), and the lower diameter of the connecting hole (9) is smaller than the diameter of the locking bead (12). The fixed shaft (4) is movably inserted into the inside of the insertion hole (13); The lower part of the connecting hole (9) is connected to the insertion hole (13), and the lower part of the locking bead (12) is inserted into the insertion hole (13); The distance between the lower end face of the fixing member (5) and the lower end face of the base plate (1) can be adjusted by rotating the fixing member (5) at different angles.

2. The wrench limiting device according to claim 1, characterized in that: The lower end of the connecting block (10) is arc-shaped, the lower end surface of the connecting block (10) is smooth, and the spring (11) is inserted into the inside of the connecting hole (9).

3. The wrench limiting device according to claim 1, characterized in that: The fixing member (5) is disc-shaped, and the right end of the fixing shaft (4) is fixedly connected to the outer side of the left end of the fixing member (5).

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