Hydraulic chuck with closed inductive function

Abstract

The utility model discloses a hydraulic chuck with closed response function, including base, be provided with left chuck lug plate and right chuck lug plate on the base, be provided with rotatable left crankshaft on left chuck lug plate, be provided with rotatable right crankshaft on right chuck lug plate, be provided with rotatable left chuck tooth seat of left crankshaft, be provided with rotatable right chuck tooth seat of right crankshaft, be provided with left half chuck on left chuck tooth seat, be provided with right half chuck and left half chuck adaptation on right chuck tooth seat, left half chuck and right half chuck are used for clamping oil pipe, still be provided with the drive structure for driving left crankshaft, right crankshaft rotation on the base, still include left crankshaft response device, the utility model discloses can effectively solve the current hydraulic chuck with closed response function not easy to get chuck open -close state, and the problem of easy misoperation.

Description

Technical Field

[0001] This utility model relates to the field of automated well workover technology in oilfields, specifically a hydraulic chuck with a closing sensing function. Background Technology

[0002] Currently, during automated well workover operations in oilfields, due to variations in wellhead height and working environment, operators may be unable to observe the chuck or may not be able to see it clearly. This requires time to ascertain the chuck's status, reducing work efficiency and increasing the risk of misoperation, such as tubing slipping into the well or damage to the chuck jaws. Therefore, the purpose of this utility model is to provide a hydraulic chuck closure sensing mechanism. Summary of the Invention

[0003] The purpose of this invention is to provide a hydraulic chuck with a closing sensing function, which can effectively solve the problem that existing hydraulic chucks with closing sensing function are not easy to obtain the opening and closing state of the chuck and are prone to misoperation.

[0004] The technical problem solved by this utility model is as follows: a hydraulic chuck with a closing sensing function, comprising a base, a left chuck ear plate and a right chuck ear plate, a rotatable left crankshaft on the left chuck ear plate and a rotatable right crankshaft on the right chuck ear plate; a left chuck tooth holder that rotates with it on the left crankshaft and a right chuck tooth holder that rotates with it on the right crankshaft; a left half chuck on the left chuck tooth holder and a right half chuck adapted to the left half chuck on the right chuck tooth holder; the left and right half chucks are used to clamp oil pipes; a drive structure for driving the left and right crankshafts to rotate is also provided on the base; a left crankshaft sensing device is also included, comprising a positioning protrusion disposed on the left crankshaft and rotatable with it, and a position sensor disposed on the left chuck ear plate below the left crankshaft, the position sensor and the positioning protrusion being adapted to each other; a display assembly connected to the position sensor is also included, the display assembly comprising an operating screen and a processor.

[0005] Furthermore, the drive structure includes a first double-ear seat, a hydraulic cylinder, a connecting rod mechanism, a left connecting rod, and a right connecting rod; one end of the left connecting rod is mounted on the left crankshaft, and the other end is provided with a left hinge shaft; one end of the right connecting rod is mounted on the front end of the right crankshaft, and the other end is provided with a right hinge shaft; the first double-ear seat is mounted on the base and is located on the front side of the right chuck ear plate; the cylinder barrel of the hydraulic cylinder is hinged to the first double-ear seat, and the top end of the piston portion of the hydraulic cylinder is squarely oriented towards the left chuck ear plate; the connecting rod mechanism includes an integrally formed short shank portion and a long rod portion, with an obtuse angle between the short shank portion and the long rod portion; one end of the connecting rod mechanism located on the short shank portion is hinged to the top end of the hydraulic cylinder piston portion, and one end of the long rod portion is rotatably sleeved on the right hinge shaft; the junction of the short shank portion and the long rod portion is rotatably sleeved on the left hinge shaft; the left hinge shaft is located below the left crankshaft, and the right hinge shaft is located above the right crankshaft.

[0006] Furthermore, the left crankshaft sensing device also includes a closable retaining ring structure fitted on the left crankshaft; the retaining ring structure includes an upper arc-shaped block and a lower arc-shaped block that matches the upper arc-shaped block, the upper arc-shaped block and the lower arc-shaped block are bolted together, and a positioning protrusion is provided on the lower arc-shaped block; when the left half chuck and the right half chuck are closed, the positioning protrusion is located at the bottom of the lower arc-shaped block and directly above the position sensor.

[0007] Furthermore, the left crankshaft sensing device also includes a mounting plate located below the left crankshaft on the chuck lug plate. The mounting plate is provided with a mounting seat, which is formed with mounting holes through its upper and lower end faces. The position sensor is fitted in the middle of the mounting hole, with its two ends extending out of the mounting hole. The mounting device includes an inner mounting plate and an outer mounting plate, which are bolted together. The mounting holes are formed on the two end faces of the inner and outer mounting plates that are in contact with each other.

[0008] Furthermore, it also includes a right crankshaft sensor adapted to the right crankshaft, which is the same as the left crankshaft sensor.

[0009] Furthermore, the cylinder is a single-eared cylinder, with the ear end of the cylinder hinged to the first double-eared seat, and the piston end of the cylinder having a second double-eared seat at its top, with the short shank hinged to the second double-eared seat.

[0010] Furthermore, the inner ring surface at the junction of the upper arc plate, the lower arc plate, and the left crankshaft is provided with a rolling pattern.

[0011] The beneficial effects of this utility model are as follows: 1. It provides a simple chuck opening and closing structure, which is convenient for the market to select according to needs. At the same time, the setting of positioning protrusion and position sensor makes it easy to monitor the rotation of the left or right crankshaft, and can easily obtain the opening and closing status of the chuck, effectively avoid the occurrence of misoperation, and improve production efficiency.

[0012] The chuck opening and closing is driven by setting up a hydraulic cylinder, connecting rod mechanism, left connecting rod, and right connecting rod in conjunction with the left crankshaft and right crankshaft. The whole structure is simple, reliable, and easy to implement.

[0013] The left hinge shaft is located below the left crankshaft, and the right hinge shaft is located above the right crankshaft, which ensures that both the left and right crankshafts are in a state of flipping rotation during the opening and closing of the chuck.

[0014] The upper arc block, lower arc block, and positioning protrusion are set on the lower arc block. This structure is simple and easy to install, and at the same time, it can ensure that the positioning protrusion can always move with the movement of the left or right crankshaft.

[0015] The mounting inner plate, the mounting outer plate, and the mounting holes formed on both facilitate the disassembly of the position sensor, while also providing positioning and protection for the position sensor.

[0016] Setting up only one left crankshaft sensor is sufficient to monitor the chuck's opening and closing status. Adding a right crankshaft sensor allows for simultaneous monitoring of both the left and right crankshafts, improving monitoring accuracy. It also serves as a backup and monitoring device for each other, ensuring that the chuck's opening and closing status monitoring function is not affected even if one of them fails or is damaged.

[0017] The rolled pattern can play a role in preventing slippage, ensuring that the retaining ring structure can rotate stably and reliably with the left or right crankshaft, further improving the reliability of the structure and function. Attached Figure Description

[0018] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This utility model Figure 1 A magnified view of a portion of region A in the middle.

[0021] Figure 3 This is a side view of the chuck of this utility model when it is opened.

[0022] Figure 4 This is a side view of the chuck of this utility model when it is closed.

[0023] In the diagram: 1. Base; 2. Left chuck lug; 3. Right chuck lug; 4. Left crankshaft; 5. Right crankshaft; 6. Left chuck tooth holder; 7. Right chuck tooth holder; 8. First double lug holder; 9. Hydraulic cylinder; 10. Left connecting rod; 11. Right connecting rod; 12. Left hinge shaft; 13. Right hinge shaft; 14. Short shank; 15. Long rod; 16. Positioning protrusion; 17. Upper arc block; 18. Lower arc block; 19. Mounting plate; 20. Inner plate mounting; 21. Outer plate mounting; 22. Position sensor; 23. Second double lug holder; 24. Left half chuck; 25. Right half chuck. Detailed Implementation

[0024] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0025] Please see Figures 1-4 As shown, a hydraulic chuck with a closing sensing function includes a base 1, a left chuck lug 2 and a right chuck lug 3 on the base 1, a rotatable left crankshaft 4 on the left chuck lug 2, and a rotatable right crankshaft 5 on the right chuck lug 3; a left chuck tooth holder 6 that rotates with the left crankshaft 4, and a right chuck tooth holder 7 that rotates with the right crankshaft 5; a left half chuck 24 on the left chuck tooth holder 6, and a right half chuck 25 adapted to the left half chuck 24 on the right chuck tooth holder 7; the left half chuck 24 and the right half chuck 25 are used to clamp oil pipes; the base 1 also includes a drive structure for driving the left crankshaft 4 and the right crankshaft 5 to rotate; and a left crankshaft sensing device, which includes a positioning protrusion 16 disposed on the left crankshaft 4 and rotatable with the left crankshaft 4; and a position sensor 22 disposed on the left chuck lug 2 below the left crankshaft 4. The position sensor 22 is adapted to the positioning protrusion 16. This hydraulic chuck with closure sensing function also includes a display assembly connected to the position sensor 22, which includes an operating screen and a processor.

[0026] The drive structure includes a first double-ear seat 8, a hydraulic cylinder 9, a connecting rod mechanism, a left connecting rod 10, and a right connecting rod 11. One end of the left connecting rod 10 is mounted on the left crankshaft 4, and the other end is provided with a left hinge shaft 12. One end of the right connecting rod 11 is mounted on the front end of the right crankshaft 5, and the other end is provided with a right hinge shaft 13. The first double-ear seat 8 is mounted on the base 1 and is located in front of the right chuck ear plate 3. The cylinder barrel of the hydraulic cylinder 9 is hinged to the first double-ear seat 8, and the top of the piston of the hydraulic cylinder 9 faces the left chuck. The ear plate 2 is square in shape; the linkage mechanism includes an integrally formed short shank 14 and a long rod 15, with an obtuse angle between the short shank 14 and the long rod 15; one end of the linkage mechanism is hinged to the top of the piston part of the cylinder 9, and one end of the long rod 15 is rotatably sleeved on the right hinge shaft 13; the junction of the short shank 14 and the long rod 15 is rotatably sleeved on the left hinge shaft 12; the left hinge shaft 12 is located below the left crankshaft 4, and the right hinge shaft 13 is located above the right crankshaft 5. The cylinder 9 is a single-ear cylinder 9, with the ear end of the cylinder 9 hinged to the first double-ear seat 8, and the top of the piston end of the cylinder 9 is provided with a second double-ear seat 23, with the short shank 14 hinged to the second double-ear seat 23.

[0027] The left crankshaft sensing device also includes a closable retaining ring structure fitted onto the left crankshaft 4. The retaining ring structure includes an upper arc-shaped block 17 and a lower arc-shaped block 18 that matches the upper arc-shaped block 17. The upper arc-shaped block 17 and the lower arc-shaped block 18 are bolted together, and a positioning protrusion 16 is provided on the lower arc-shaped block 18. When the left half chuck 24 and the right half chuck 25 are closed, the positioning protrusion 16 is located at the bottom of the lower arc-shaped block 18 and directly above the position sensor 22. The inner ring surface at the junction of the upper arc-shaped plate, the lower arc-shaped plate, and the left crankshaft 4 is provided with a rolling pattern.

[0028] The left crankshaft sensing device also includes a mounting plate 19 located below the left crankshaft 4 on the chuck lug plate. The mounting plate 19 is provided with a mounting seat, which is formed with mounting holes through its upper and lower end faces. The position sensor 22 is sleeved in the mounting hole in the middle, and its two ends protrude from the mounting hole. The mounting device includes an inner mounting plate 20 and an outer mounting plate 21, which are bolted together. The mounting holes are formed on the two end faces of the inner mounting plate 20 and the outer mounting plate 21 that are in contact with each other.

[0029] This hydraulic chuck with closure sensing function also includes a right crankshaft sensing device adapted to the right crankshaft 5, which is the same as the left crankshaft sensing device.

[0030] The operation screen and processor are both existing technologies, and their working principles will not be elaborated here. The position sensor 22 can be model IFT202, which can be purchased on the market.

[0031] In this application, the left crankshaft sensing device and the right crankshaft sensing device can also use a cam to compress the guide shaft, using the guide shaft as a sensing source. The guide shaft compresses the spring to move vertically, so that the position sensor 22 can sense it.

[0032] The sensing mechanism provided by this utility model has the function of judging the chuck status: when the chuck is closed, the positioning protrusion 16 is directly above the position sensor 22, triggering the response mode and sending a signal. The processor receives the signal, processes it, and transmits it to the operation screen. The operator can determine that the chuck is in the closed state through the operation screen.

[0033] When the chuck is open, the positioning protrusion 16 rotates with the left crankshaft 4 or the right crankshaft 5. The positioning protrusion 16 moves away from the position sensor 22 and is out of the sensing range. At this time, the sensor will not detect a signal. The processor determines that the chuck is in the closed state and displays the chuck status on the operation screen. The operator can know that the chuck is in the open state.

[0034] When the chuck is closed, the piston of the hydraulic cylinder 9 extends, applying a leftward force to the end of the short handle 14 that is hinged to it, thereby causing the entire linkage mechanism to shift. At this time, a force is applied to the left connecting rod 10 and the right connecting rod 11 that are hinged to the linkage mechanism, causing the left crankshaft 4 and the right crankshaft 5 to rotate in opposite directions. The left crankshaft 4 rotates counterclockwise, and the right crankshaft 5 rotates clockwise. This causes the left half chuck 24 and the right half chuck 25 on them to close, completing the chuck closing operation. At the same time, the positioning protrusion 16 moves to the position sensor 22 to trigger a response signal.

[0035] When the chuck is opened, the piston of the hydraulic cylinder 9 retracts, applying a rightward force to the end of the short handle 14 that is hinged to it, thereby causing the entire linkage mechanism to shift. At this time, a force is applied to the left connecting rod 10 and the right connecting rod 11 that are hinged to the linkage mechanism, causing the left crankshaft 4 and the right crankshaft 5 to rotate in opposite directions. The left crankshaft 4 rotates counterclockwise and the right crankshaft 5 rotates clockwise, thereby causing the left half chuck 24 and the right half chuck 25 on them to open, completing the chuck opening operation. At the same time, the positioning protrusion 16 will move away from the position sensor 22, and there is no sensing signal trigger.

[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A hydraulic chuck with a closed induction function, comprising a base, characterized in that: The base is provided with a left chuck ear plate and a right chuck ear plate, the left chuck ear plate is provided with a rotatable left crankshaft, and the right chuck ear plate is provided with a rotatable right crankshaft; the left crankshaft is provided with a left chuck tooth seat which can rotate with the left crankshaft, and the right crankshaft is provided with a right chuck tooth seat which can rotate with the right crankshaft; the left chuck tooth seat is provided with a left half chuck, and the right chuck tooth seat is provided with a right half chuck which is matched with the left half chuck; the left half chuck and the right half chuck are used for clamping an oil pipe; the base is further provided with a driving structure for driving the left crankshaft and the right crankshaft to rotate; the left crankshaft sensing device comprises a positioning protrusion arranged on the left crankshaft and capable of rotating with the left crankshaft, and a position sensor arranged on the left chuck ear plate below the left crankshaft and matched with the positioning protrusion; the screen display assembly connected with the position sensor comprises an operation screen and a processor.

2. The hydraulic chuck with closed induction function according to claim 1, characterized in that: The driving structure comprises a first double-ear ear seat, an oil cylinder, a connecting rod mechanism, a left connecting rod and a right connecting rod; one end of the left connecting rod is arranged on the left crankshaft, and the other end is provided with a left hinge shaft; one end of the right connecting rod is arranged on the front end of the right crankshaft, and the other end is provided with a right hinge shaft; the first double-ear ear seat is arranged on the base, and the first double-ear ear seat is located on the front side of the right chuck ear plate; the cylinder barrel of the oil cylinder is hinged on the first double-ear ear seat, and the top end of the piston part of the oil cylinder is arranged towards the left chuck ear plate; the connecting rod mechanism comprises an integrally formed short handle part and a long rod part, and the included angle between the short handle part and the long rod part is an obtuse angle; one end of the connecting rod mechanism is hinged to the top end of the piston part of the oil cylinder, and the other end can be rotatably sleeved on the right hinge shaft; the joint position of the short handle part and the long rod part can be rotatably sleeved on the left hinge shaft; the left hinge shaft is located below the left crankshaft, and the right hinge shaft is located above the right crankshaft.

3. The hydraulic chuck with closed induction function according to claim 1 or 2, characterized in that: The left crankshaft sensing device further comprises a clasp structure which can be opened and closed and is sleeved on the left crankshaft; the clasp structure comprises an upper arc block and a lower arc block matched with the upper arc block, the upper arc block and the lower arc block are bolted, and the positioning protrusion is arranged on the lower arc block; when the left half chuck and the right half chuck are in a closed state, the positioning protrusion is located at the bottom of the lower arc block and directly above the position sensor.

4. The hydraulic chuck with closed induction function according to claim 3, characterized in that: The left crankshaft sensing device further comprises a mounting plate arranged below the left crankshaft on the chuck ear plate, the mounting plate is provided with a mounting seat, the mounting seat is formed with a mounting hole penetrating through the upper and lower two end faces thereof; the middle part of the position sensor is sleeved in the mounting hole, and the two ends thereof protrude out of the mounting hole; the mounting seat comprises a mounting inner plate and a mounting outer plate, and the mounting inner plate and the mounting outer plate are bolted; the mounting hole is formed on the two end faces of the mounting inner plate and the mounting outer plate which are in close contact.

5. The hydraulic chuck with closed induction function according to claim 4, characterized in that: The right crankshaft sensing device matched with the right crankshaft is further included, and the right crankshaft sensing device is the same as the left crankshaft sensing device.

6. The hydraulic chuck with closed induction function according to claim 5, characterized in that: The oil cylinder is a single-ear oil cylinder, the ear end of the oil cylinder is hinged on the first double-ear ear seat, and the piston end of the oil cylinder is provided with a second double-ear ear seat, and the short handle part is hinged on the second double-ear ear seat.

7. The hydraulic chuck with closed induction function according to claim 6, characterized in that: The inner ring surface of the joint of the upper arc plate, the lower arc plate and the left crankshaft is provided with a roll pattern.

Images