A joint mechanism and downhole tool detection device having the same

Abstract

The present invention relates to a joint mechanism and a downhole tool detection device having the same. The joint mechanism includes a working platform, a lifting mechanism, a pushing mechanism and a fixed platform. The working platform has an inner cavity. The lower end of the working platform is equipped with a boss. The pushing mechanism is installed in the boss, and the upper end extends into the inner cavity of the working platform. The lifting mechanism is installed in the inner cavity of the working platform and cooperates with the upper end of the pushing mechanism. The fixed platform is a shell seat adapted to the boss, and is arranged on the outside of the boss and connected to the lower end of the pushing mechanism. A rebound mechanism is provided between the pushing mechanism and the boss. The lifting mechanism is used to contact the upper end of the pushing mechanism, push the pushing mechanism downward, and compress the rebound mechanism. The lower end of the fixed platform is provided with a first operator fixing device. Advantages: Through the joint mechanism, the staff on the fixed platform can quickly and safely reach deep underground positions to perform the work tasks that need to be completed.

Description

Technical Field

[0001] The present invention relates to the technical field of natural gas and oil mining, and in particular to a joint mechanism and a downhole tool detection device having the same. Background Art

[0002] The downhole tool testing device is a device used to inspect various tools used in oil extraction and drilling operations. It mainly tests the physical, electrical, and magnetic properties of the tools to verify whether their performance meets the specified standards, thereby ensuring the safety and efficiency of downhole operations and reducing the risk of accidents.

[0003] However, there is currently a lack of reliable equipment for detecting whether a downhole tool has reached a predetermined position in the wellbore. Currently, in most cases, the downhole tool's position can only be determined empirically, which has low accuracy. In some cases, the downhole tool's position in the wellbore can be indirectly calculated based on parameters such as fluid pressure within the wellbore, friction between the downhole tool and the wellbore, the weight of the downhole tool, and time, but this also suffers from low accuracy.

[0004] In order to solve the above problems, for example, a Chinese patent, with the publication number: CN109538192A, discloses a downhole tool detection device. The downhole tool detection device provided by the embodiment of the invention is used to be connected to the wellbore of an oil and gas well, and the contact head extends into the wellbore. When the downhole tool moves to the contact head, the downhole tool applies pressure to the contact head, forcing the contact head to move toward the position detector. The contact head approaches the position detector and then drives the trigger to approach the position detector. At this time, the position detector outputs a position detection signal. According to the position detection signal, it can be determined that the downhole tool has reached the position of the downhole tool detection device.

[0005] However, in actual use, most of today's downhole tool detection devices are unable to achieve remote or unmanned vibration monitoring underground, which will bring potential risks to physical safety in environments such as industrial production and mining operations. For example, if there are accidents such as collapse, earthquake, explosion, fire, etc., even if they can be discovered in time when no one is around, emergency measures and rescue actions cannot be taken immediately; at the same time, if the downhole tool detection device cannot be used to enable workers on fixed platforms to quickly and safely reach deep underground locations, it will not only affect the stability and efficiency of industrial production and mining operations, but also threaten the lives of underground workers.

[0006] Therefore, it is necessary to develop a joint mechanism and related detection device to solve the above problems. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a joint mechanism and a downhole tool detection device having the same, which effectively overcomes the defects of the prior art.

[0008] The technical solution of the present invention to solve the above technical problems is as follows:

[0009] A joint mechanism includes a working platform, a lifting mechanism, a pushing mechanism and a fixed platform. The working platform has an inner cavity. The lower end of the working platform is equipped with a boss. The pushing mechanism is installed in the boss, and the upper end extends into the inner cavity of the working platform. The lifting mechanism is installed in the inner cavity of the working platform and cooperates with the upper end of the pushing mechanism. The fixed platform is a shell seat adapted to the boss, and is arranged on the outside of the boss and connected to the lower end of the pushing mechanism. A rebound mechanism is provided between the pushing mechanism and the boss. The lifting mechanism is used to contact the upper end of the pushing mechanism, push the pushing mechanism downward, and compress the rebound mechanism. The lower end of the fixed platform is provided with a first operator fixing device.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, the lower part of the above-mentioned boss is configured to be frustum-shaped, and an assembly hole extending vertically to its upper end is provided in the above-mentioned boss. The above-mentioned pushing mechanism is installed in the above-mentioned assembly hole, and its lower end passes through the lower end of the above-mentioned boss. The above-mentioned fixed platform is a frustum-shaped platform with a hollow interior. The above-mentioned fixed platform can move upward with the above-mentioned pushing mechanism to be wrapped outside the above-mentioned boss, or move downward to separate from the above-mentioned boss.

[0012] Furthermore, the pushing mechanism includes a vertical push rod, a limit block is provided in the middle of the push rod, and the rebound mechanism is connected between the limit block and the bottom of the assembly hole.

[0013] Furthermore, an auxiliary platform extending horizontally to all sides of the fixed platform is fixed on the upper part of the fixed platform, and a second operator fixing device and a mechanical arm are provided at the lower end of the auxiliary platform.

[0014] Furthermore, the lifting mechanism is connected to a vertical guide rod, the lower end of which passes through the bottom of the working platform and is fixedly connected to the auxiliary platform.

[0015] Furthermore, a cardboard base is fixed to the bottom of the above-mentioned working platform, the upper end of the above-mentioned boss is embedded in the adapted hole position on the above-mentioned cardboard base, and the lower end of the above-mentioned guide connecting rod passes through the above-mentioned cardboard base.

[0016] The top end of the guide rod is inserted into the guide hole and the bottom end is fixed with the guide rod, and the bottom end of the guide rod is connected with the bottom end of the work platform.

[0017] Furthermore, the bottom wall of the above-mentioned slide is provided with a plurality of continuous slots, and the above-mentioned slots all extend toward both sides of the above-mentioned push plate, and the plurality of above-mentioned slots are continuously distributed along the two ends of the above-mentioned push plate. The longitudinal section of the above-mentioned slot is arc-shaped, and a positioning hole is provided on the upper part of the other end of the above-mentioned slide. A limiting ball in contact with the bottom wall of the above-mentioned slide is installed in the above-mentioned positioning hole through an elastic part. During the horizontal movement of the above-mentioned slide, the above-mentioned limiting ball can move to any one of the above-mentioned slots.

[0018] The beneficial effect is that the joint mechanism can be used to enable workers on the fixed platform to quickly and safely reach deep underground locations to carry out the work tasks that need to be completed.

[0019] Also provided is a downhole tool detection device comprising a joint mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural cross-sectional view of the joint mechanism of the present invention.

[0021] Figure 2 This is a cross-sectional view of the structure of the joint mechanism of the present invention when in use.

[0022] Figure 3 for Figure 2 A magnified view of the structure at point A in the middle.

[0023] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0024] 1. Working platform; 2. Lifting mechanism; 3. Pushing mechanism; 4. Fixed platform; 5. Boss; 6. Rebound mechanism; 7. Auxiliary platform; 8. Guide connecting rod; 11. Card base; 21. Push rod; 22. Push plate; 23. Guide rod; 24. Slide plate; 25. Card slot; 31. Push rod; 32. Limit block; 241. Limit ball. DETAILED DESCRIPTION

[0025] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0026] Example 1

[0027] like Figure 1 and 2 As shown, the joint mechanism of this embodiment includes a working platform 1, a lifting mechanism 2, a pushing mechanism 3 and a fixed platform 4. The working platform 1 has an inner cavity D. The lower end of the working platform 1 is equipped with a boss 5. The pushing mechanism 3 is installed in the boss 5, and the upper end extends into the inner cavity of the working platform 1. The lifting mechanism 2 is installed in the inner cavity of the working platform 1 and cooperates with the upper end of the pushing mechanism 3. The fixed platform 4 is a shell seat adapted to the boss 5, and is arranged on the outside of the boss 5 and connected to the lower end of the pushing mechanism 3. A rebound mechanism 6 is provided between the pushing mechanism 3 and the boss 5. The lifting mechanism 2 is used to contact the upper end of the pushing mechanism 3, push the pushing mechanism 3 downward, and compress the rebound mechanism 6. The lower end of the fixed platform 4 is provided with a first operator fixing device.

[0028] During use, the top of the work platform 1 is provided with a cylinder or oil cylinder, the rod of which is connected to the lifting mechanism 2, providing the lifting power of the lifting mechanism 2. Before use, the operator fixes himself to the lower end of the fixed platform 4 through the first operator fixing device. By controlling the extension of the cylinder or oil cylinder, the lifting mechanism 2 is driven to descend, thereby pushing the pushing mechanism 3 downward. During the downward movement, the pushing mechanism 3 drives the fixed platform 4 downward, thereby transporting the worker at the lower end of the fixed platform 4 to a deep position underground for work. When the work is completed, the cylinder or oil cylinder is controlled to move back (upward). The pushing mechanism 3 moves upward under the elastic force of the rebound mechanism 6. The pushing mechanism 3 drives the fixed platform 4 upward, thereby moving the lower end of the fixed platform 4, and thus the worker at the lower end of the fixed platform 4, to the initial working position. The whole joint mechanism is reasonably designed, so that the workers on the fixed platform can quickly and safely reach the deep position underground and perform the work tasks that need to be completed.

[0029] In this embodiment, the first operator fixing device can adopt a structure composed of a frame and a binding belt. Specifically, the frame is installed at the lower end of the fixed platform 4, and the binding belt is installed on the frame, which can restrain the operator's body to the frame, thereby ensuring the safety of the operator when performing underground operations.

[0030] As a preferred embodiment, the lower part of the above-mentioned boss 5 is configured to be frustum-shaped, and the above-mentioned boss 5 is provided with an assembly hole c extending vertically to its upper end. The above-mentioned pushing mechanism 3 is installed in the above-mentioned assembly hole, and its lower end passes through the lower end of the above-mentioned boss 5. The above-mentioned fixed platform 4 is a frustum-shaped platform with a hollow interior. The above-mentioned fixed platform 4 can move upward with the above-mentioned pushing mechanism 3 to be wrapped outside the above-mentioned boss 5, or move downward to separate from the above-mentioned boss 5.

[0031] In the above embodiment, in the initial state, the fixed platform 4 is sleeved on the outside of the boss 5, and the two are tightly matched, and no horizontal displacement occurs, which is conducive to the operator moving to the lower end of the fixed platform 4 and fixing the body. When it is necessary to go down the well, the fixed platform 4 can be moved downward smoothly relative to the boss 5.

[0032] As a preferred embodiment, the pushing mechanism 3 includes a vertical push rod 31 , a limit block 32 is provided in the middle of the push rod 31 , and the rebound mechanism 6 is connected between the limit block 32 and the bottom of the assembly hole.

[0033] In the above embodiment, the pushing mechanism 3 uses a simple push rod 31 as a core component, and its structural design is simple. In addition, through the design of the limit block 32, the rebound mechanism 6 can be stably assembled. Specifically, the rebound mechanism 6 is a spring and is sleeved outside the push rod 31. Its upper and lower ends are respectively connected to the limit block 32 and the bottom of the assembly hole. When the push rod 31 is driven downward by the lifting mechanism 2, the rebound mechanism 6 is compressed and deformed to accumulate force. When the driving state of the lifting mechanism 2 and the push rod 31 is released (that is, when the lifting mechanism 2 moves upward and returns to its original position), the rebound mechanism 6 can restore the deformation and drive the limit block 32 and the push rod 31 to move upward and return to their original position through elastic force. Its structural design is relatively simple and reasonable, and it is easy to operate and use.

[0034] As a preferred embodiment, an auxiliary platform 7 horizontally extending to the four sides of the fixed platform 4 is fixed on the upper part thereof, and a second operator fixing device and a mechanical arm are provided at the lower end of the auxiliary platform 7 .

[0035] In the above-mentioned embodiment, a device with a similar structure to the first operator fixing device is set at the lower end of the auxiliary platform 7, and is equipped with a mechanical arm. Before work, the workers can be fixed to the lower end of the auxiliary platform 7 by the second operator fixing device, which can ensure their safety when performing work. During the downward movement of the lifting mechanism 2, the auxiliary platform 7 moves downward synchronously with the fixed platform 4, and the workers on the auxiliary platform 7 can perform work requirements at shallow locations underground. At the same time, the workers on the auxiliary platform 7 can also provide necessary support for the workers on the fixed platform 4. The two parties can work together and cooperate with each other to ensure construction efficiency and safety. At the same time, in an emergency, the auxiliary platform 7 can also serve as a communication and transfer to ensure smooth communication between all workers underground, avoid the situation where the workers on the fixed platform 4 lose contact with the ground due to being too deep, and reduce the occurrence of accidents. Overall, this design can improve the safety and production efficiency of underground work. In addition, a robotic arm is bolted to the lower end of the auxiliary platform 7 (the robotic arm is connected to the controller signal; the specific structure of the robotic arm can be found in patent publication number CN111590554A). The staff on the auxiliary platform 7 can use the robotic arm to deliver required items to the staff on the fixed platform 4, providing assistance to the staff on the fixed platform 4. The use of the robotic arm can realize automated item delivery and processing operations, and avoid problems such as errors and labor intensity that may occur during the process for staff. The robotic arm has the characteristics of high speed and precision, which can quickly and accurately transport items to the required location, thereby improving work efficiency and reducing working time. The use of the robotic arm can eliminate some repetitive and dangerous tasks, and improve the safety and comfort of the workplace.

[0036] As a preferred embodiment, the lifting mechanism 2 is connected to a vertical guide rod 8 , the lower end of the guide rod 8 passes through the bottom of the working platform 1 and is fixedly connected to the auxiliary platform 7 .

[0037] In the above embodiment, during operation, the lifting mechanism 2 drives the guide link 8 downward, thereby driving the auxiliary platform 7 connected to the guide link 8 and the fixed platform 4 to descend synchronously, meeting the requirements of collaborative work between the workers on the auxiliary platform 7 and the fixed platform 4. In addition, the structural design can effectively ensure the synchronous movement of the auxiliary platform 7 and the fixed platform 4, and the installation of the auxiliary platform 7 is also more stable.

[0038] In this embodiment, a cardboard base 11 is also fixed to the bottom of the above-mentioned working platform 1. The upper end of the above-mentioned boss 5 is embedded in the adapted hole on the above-mentioned cardboard base 11, and the lower end of the above-mentioned guide connecting rod 8 passes through the above-mentioned cardboard base 11. A limiting groove 1 with a larger hole diameter than the cardboard base 11 is provided on the upper edge of the hole of the cardboard base 11, and a flange 1 is provided on the upper edge of the boss 5. The flange 1 is snapped into the limiting groove 1, making the assembly of the boss 5 more secure. In addition, a positioning hole is provided on the auxiliary platform 7, and the fixed platform 4 passes through the positioning hole. In addition, a limiting groove 2 with a larger hole diameter than the cardboard base 11 is provided at the lower edge of the positioning hole. A flange 2 is provided on the outer periphery of the upper end of the fixed platform 4, and the flange 2 is snapped into the limiting groove 2. This makes the assembly of the fixed platform 4 and the auxiliary platform 7 tighter, and the two will not be relatively skewed.

[0039] As a preferred embodiment, the lifting mechanism 2 includes a push rod 21, a push plate 22, a guide rod 23 and a slide plate 24. The push rod 21 is vertically arranged, and its upper end passes through the top of the inner cavity of the working platform 1. The push rod 21 is horizontally arranged and connected and fixed with the lower end of the push rod 21. The lower end of the push plate 22 is provided with a slide groove a extending to one end thereof. The slide plate 24 is horizontally assembled in the slide groove. The guide rod 23 is tilted, and its lower end is connected and fixed with the bottom wall of the inner cavity of the working platform 1. One end of the slide plate 24 is provided with an inclined groove extending to the bottom wall of the inner cavity of the working platform 1. Its guide hole, one end of the push plate 22 is provided with an opening that passes through the guide hole, the upper end of the guide rod 23 passes through the guide hole and extends into the opening, the lower end of the other end of the push plate 22 is provided with an extrusion slope surface, the push rod 21 is used to drive the push plate 22 to move up and down under the action of external force, so that the slide plate 24 slides horizontally along the guide rod 23 and the slide groove, and when the push rod 21 moves downward, the other end of the slide plate 24 slides horizontally toward the upper end of the pushing mechanism 3, and squeezes the pushing mechanism 3 downward to move.

[0040] In the above embodiment, when in use, the worker fixes himself on the first worker fixing device (that is, the lower end of the fixed platform 4), and starts the cylinder or oil cylinder through the controller, and the cylinder or oil cylinder drives the push rod 21, and the push rod 21 drives the push plate 22. When the push plate 22 moves downward, it moves along the guide rod 23. Since the guide rod 23 is inserted into the guide hole (oblique hole) of the slide plate 24, the slide plate 24 will be pulled by the guide rod 23 to move along the slide groove; when the slide plate 24 moves to the other end close to the upper end of the pushing mechanism 3, it will gradually squeeze from the side. The pressure enters the upper end of the jacking mechanism 3, and as the push plate 22 moves downward, the jacking mechanism 3 is pushed downward. The jacking mechanism 3 then drives the fixed platform 4 downward, thereby transporting the workers on the fixed platform 4 to a deep position underground for work. When the work is completed, the cylinder or oil cylinder moves back, and the push plate 22 is pulled back to its original position by the guide rod 23. The push rod 21 moves upward, and under the elastic force of the rebound mechanism 6, it drives the jacking mechanism 3 and the fixed platform 4 upward until they return to the position before the initial operation. The entire structure is rationally designed and improves construction efficiency. Through the coordinated operation of the guide rod 23, the slide plate 24 and the guide rod 23, precise positioning and movement are achieved, allowing the workers on the fixed platform 4 to quickly and safely reach the deep position underground and perform the required work tasks. For mines with greater depths, it can also minimize the safety hazards of workers climbing and sinking, effectively reducing the probability of various risks and threats during underground operations.

[0041] As a preferred embodiment, Figure 1 、 2 As shown in Figure 3, the bottom wall of the above-mentioned slide is provided with a plurality of continuous slots 25, which extend toward both sides of the above-mentioned push plate 22, and the plurality of slots 25 are continuously distributed along the two ends of the above-mentioned push plate 22. The longitudinal section of the above-mentioned slots 25 is arc-shaped, and a positioning hole is provided on the upper part of the other end of the above-mentioned slide plate 24. A limiting ball 241 in contact with the bottom wall of the above-mentioned slide is installed in the above-mentioned positioning hole through an elastic member e. During the horizontal movement of the above-mentioned slide plate 24, the above-mentioned limiting ball 241 can move to any one of the above-mentioned slots 25.

[0042] In the above embodiment, when the slide 24 slides along the chute, the limiting ball 241 in the positioning hole, due to elastic contact with the bottom wall of the chute, gradually slides into a slot 25 adjacent to it as the slide 24 moves, thereby limiting and fixing the slide 24. The buffering effect of the elastic member can reduce the vibration and impact of the slide 24 caused by external forces during movement, thereby improving the vibration resistance of the entire device. The limiting ball 241 and the slot 25 can be used to control and position the axial direction of movement (specifically, each operation can cause the slide 24 to slide the distance of one or more slots 25. As the slide 24 continues to move, the limiting ball 241 will slide horizontally from one slot 25 to another slot 25), thereby ensuring the accuracy and stability of the system.

[0043] In this embodiment, a foot fixing frame can be fixedly connected to the lower end of the fixed platform 4 and the auxiliary platform 7 by bolts (the foot fixing frame can refer to the patent announcement number: CN208927530U for an adjustment device for the foot fixing frame of an inversion machine). The specific implementation process is as follows: when the staff performs inversion work, the foot fixing frame can firmly fix the staff's legs, thereby increasing stability and helping the staff to better control their posture, preventing accidents due to loss of balance; through the application of the foot fixing frame, the burden of the staff during inversion work can be reduced, the labor intensity can be reduced, and the center of gravity can be adjusted to the lower half of the body while protecting the legs, making the operation more scientific; when the staff needs to perform inversion work at a height, the use of the foot fixing frame can effectively prevent falls and other physical injuries, ensuring the safety of the staff working at height; the design of the foot fixing frame enables the staff to complete the task requiring inversion work more easily, effectively reduces unnecessary leg shaking and movement during work, and avoids various problems such as inability to complete the task.

[0044] Example 2

[0045] The downhole tool detection device of this embodiment includes the joint mechanism in Example 1, and also includes various other compatible detection instruments. The various detection instruments are sent to the position to be detected underground through the joint mechanism, thereby realizing the detection of underground related information.

[0046] Among them, the detection instrument may include a vibration detection instrument, which includes a closed-end shell, in which a battery, a sliding resistor, an electric light and a camera are arranged. The above-mentioned sliding resistor is electrically connected to the battery, and the above-mentioned electric light and camera are electrically connected to the battery through the sliding resistor respectively, and the above-mentioned camera is connected to the controller.

[0047] In this embodiment, the staff sends the vibration detection instrument into the deep well through the joint mechanism and installs it at the position underground that needs to be detected. When vibration occurs at the place underground that needs to be detected, the vibration will cause the movement of the outer shell, and then drive the sliding resistor to move together. The movement of the sliding resistor can control the magnitude of the current in the circuit, and then drive the light to flicker or adjust the brightness. The controller controls the camera to take a picture of the light, and then transmits the photo to the staff's mobile terminal through the controller. The staff judges the vibration amplitude of the position underground that needs to be detected by comparing the brightness of the light in the photo.

[0048] It's important to emphasize that in actual applications, the light bulb is connected in series with a sliding resistor. As the sliding resistor changes position with vibration, its resistance also changes, causing the total resistance of the circuit to change. This in turn causes the current flowing into the light bulb to change accordingly. Therefore, the movement of the sliding resistor can control the current in the circuit, thereby flickering the light bulb or adjusting its brightness. When the light bulb is connected in series with the sliding resistor, the greater the resistance, the smaller the current flowing through the circuit. At the same time, according to Ohm's law (I = U / R), the voltage remains constant, while the current flowing through the light bulb decreases, resulting in a dimmer light output. Therefore, when the vibration amplitude is small, the sliding resistor moves less, its resistance increases, and the light bulb's brightness decreases. Conversely, when the sliding resistor's resistance decreases, the light bulb's brightness increases. Therefore, a brighter light in the photo indicates a greater vibration amplitude at the detection location; conversely, a dimmer light in the photo indicates a smaller vibration amplitude at the detection location.

[0049] In summary, when there is a positive correlation between the brightness of the electric light in the photo and the vibration amplitude at the detection position, the vibration conditions at the location to be detected underground can be indirectly understood by observing the changes in the brightness of the electric light, thereby realizing remote or unattended vibration monitoring; it has the advantages of easy installation and low cost, and by combining with computers and other equipment, it can realize automated, real-time monitoring and early warning.

[0050] In this embodiment, a mounting bracket is bolted to one side of the housing. Securing the housing with the mounting bracket improves its stability and reliability. Because the mounting bracket's fixed suspension supports some of the device's weight and inertia, the pressure on the housing is reduced, effectively preventing unexpected shaking. The easily removable mounting bracket facilitates repair and maintenance of the entire housing. Furthermore, its relative independence significantly reduces impacts on the housing itself, significantly reducing maintenance and cleaning costs. Securing the housing to the mounting bracket provides more space and a larger workspace.

[0051] In this embodiment, a waterproof layer is fixedly attached to the inner wall of the housing via bolts. This waterproof layer effectively prevents moisture from entering the interior of the housing, protecting the battery, sliding resistor, light, and camera within the housing from moisture and rust. It also reduces damage to the interior of the housing caused by bacteria and mold. The structure of the waterproof layer improves the sealing performance of the housing and enhances its pressure-bearing capacity. In certain specific environments, such as heavily polluted industrial environments or harsh climates, the use of a waterproof layer can significantly increase the maintenance cycle of the housing, reducing repair time and costs.

[0052] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0054] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0055] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0056] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0057] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A joint mechanism, characterized in that: The invention comprises a working platform (1), a lifting mechanism (2), a pushing mechanism (3) and a fixed platform (4), wherein the working platform (1) has an inner cavity, a boss (5) is provided at the lower end of the working platform (1), the pushing mechanism (3) is installed in the boss (5), and the upper end thereof extends into the inner cavity of the working platform (1), the lifting mechanism (2) is installed in the inner cavity of the working platform (1) and cooperates with the upper end of the pushing mechanism (3), the fixed platform (4) is a shell seat adapted to the boss (5), and is arranged outside the boss (5) and connected to the lower end of the pushing mechanism (3), a rebound mechanism (6) is provided between the pushing mechanism (3) and the boss (5), The lifting mechanism (2) is used to contact the upper end of the pushing mechanism (3), push the pushing mechanism (3) downward, and compress the rebound mechanism (6). The lower end of the fixed platform (4) is provided with a first operator fixing device; the lower part of the boss (5) is set to be a cone, and the boss (5) is provided with an assembly hole extending vertically to its upper end. The pushing mechanism (3) is installed in the assembly hole, and its lower end passes through the lower end of the boss (5). The fixed platform (4) is a cone-shaped platform with a hollow interior. The fixed platform (4) can move upward with the pushing mechanism (3) to be wrapped outside the boss (5), or move downward to separate from the boss (5); the pushing mechanism (3) The invention comprises a vertical top rod (31), a limit block (32) is provided in the middle of the top rod (31), and the rebound mechanism (6) is connected between the limit block (32) and the bottom of the assembly hole; the lifting mechanism (2) comprises a push rod (21), a push plate (22), a guide rod (23) and a slide plate (24), the push rod (21) is vertically arranged, and its upper end passes through the top of the inner cavity of the working platform (1), the push plate (22) is horizontally arranged and fixed to the lower end of the push rod (21), the lower end of the push plate (22) is provided with a slide groove extending to one end thereof, and the slide plate (24) is horizontally assembled in the slide groove, and the guide rod (23) is tilted, and its lower end is connected to the working platform. (1) is connected and fixed to the bottom wall of the inner cavity, one end of the slide plate (24) is provided with a guide hole obliquely passing through it, one end of the push plate (22) is provided with an opening that passes through the guide hole, the upper end of the guide rod (23) passes through the guide hole and extends into the opening, the lower end of the other end of the push plate (22) is provided with an extrusion slope surface, the push rod (21) is used to drive the push plate (22) to move up and down under the action of an external force, so that the slide plate (24) slides horizontally along the guide rod (23) and the slide groove, and when the push rod (21) moves downward, the other end of the slide plate (24) slides horizontally toward the upper end of the push mechanism (3) and squeezes the push mechanism (3) downward to move.

2. A joint mechanism according to claim 1, characterized in that: An auxiliary platform (7) extending horizontally around the fixed platform (4) is fixedly mounted on the upper portion of the fixed platform (4), and a second operator fixing device and a mechanical arm are provided at the lower end of the auxiliary platform (7).

3. A joint mechanism according to claim 2, characterized in that: The lifting mechanism (2) is connected to a vertical guide link (8), the lower end of the guide link (8) passes through the bottom of the working platform (1) and is connected and fixed to the auxiliary platform (7).

4. A joint mechanism according to claim 3, characterized in that: A cardboard base (11) is also fixed to the bottom of the working platform (1), the upper end of the boss (5) is embedded in an adapted hole on the cardboard base (11), and the lower end of the guide connecting rod (8) passes through the cardboard base (11).

5. The joint mechanism according to claim 1, characterized in that: The bottom wall of the slide is provided with a plurality of continuous slots (25), and the slots (25) extend toward both sides of the push plate (22), and the plurality of slots (25) are continuously distributed along the two ends of the push plate (22), and the longitudinal section of the slots (25) is arc-shaped. A positioning hole is provided on the upper part of the other end of the slide (24), and a limiting ball (241) in contact with the bottom wall of the slide is installed in the positioning hole through an elastic member. During the horizontal movement of the slide (24), the limiting ball (241) can move to any one of the slots (25).

6. A downhole tool detection device, characterized in that: Comprising the joint mechanism according to any one of claims 1-5.

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