An adjustable stroke full hydraulic jar limiter

Abstract

The utility model relates to the technical field of jar, disclose a full hydraulic jar limiting device of adjustable stroke, including jar main part, the middle part of jar main part installs the limiting mechanism, the inside of jar main part is provided with the recess, the inside of jar main part is provided with the placement groove, the limiting mechanism includes blocking component and slowing down component, the blocking component includes hydraulic rod no. In the utility model, the bag body is provided for the limiting block through hydraulic rod no.

Description

Technical Field

[0001] This utility model relates to the field of shock device technology, and in particular to an adjustable stroke fully hydraulic shock device limiter. Background Technology

[0002] A shock absorber limit device is a mechanical or hydraulic component used to control the working stroke of a shock absorber. By setting physical stops, adjustable clamps, or electronic sensors, it limits the range of motion of the internal impact mechanism of the shock absorber, preventing excessive displacement that could damage the tool or cause downhole accidents. At the same time, it ensures that the shock force is accurately transmitted to the target position, improving the safety and efficiency of drilling and well workover operations. Its design must take into account strength, wear resistance, and adjustability to adapt to different working conditions.

[0003] Existing equipment often consists of structures such as limit blocks, fixing pins, and shock absorber bodies. The shock absorber body provides support for the limit blocks, enabling them to operate stably and thus limiting the impact mechanism of the shock absorber to prevent it from exceeding its stroke and falling out of the shock absorber body. The fixing pins fix the limit blocks, allowing them to better limit the impact mechanism.

[0004] However, during use, the impact mechanism will collide with the limit block, which will affect the limit block to a certain extent, thus reducing the use time of the limit block. This reduces the limiting effect of the limit block, making it unable to limit the impact mechanism. Therefore, an adjustable stroke fully hydraulic shock absorber limit device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides an adjustable stroke fully hydraulic shock absorber limiting device, which aims to improve the problem in the prior art where the shock absorber's impact mechanism is in continuous contact with the limiting block, causing wear on the limiting block and reducing its service life, thus preventing the limiting block from limiting the impact mechanism.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An adjustable stroke fully hydraulic shock absorber limiting device includes a shock absorber body, a limiting mechanism installed in the middle of the shock absorber body, a groove formed on the inner side of the shock absorber body, and a placement slot formed on the inner side of the shock absorber body. The limiting mechanism includes a blocking component and a damping component. The blocking component includes a hydraulic rod, which is fixedly connected to the middle of the shock absorber body. A limiting block is fixedly connected to the output end of the hydraulic rod, and a buffer pad is slidably connected to the middle of the limiting block. As a further description of the above technical solution: The damping component includes a slide bar, which is fixedly connected to the top of the buffer pad and slidably connected to the middle of the limiting block. A push plate is fixedly connected to the top of the slide bar, and a compression spring is provided inside the limiting block. As a further description of the above technical solution: A hydraulic rod 2 is fixedly connected to the middle of the main body of the shock absorber. A connecting plate is fixedly connected to the output end of the hydraulic rod 2. A slider is fixedly connected to the middle of the connecting plate. A clamping plate is slidably connected to the outside of the slider. As a further description of the above technical solution: The outer side of the clamp is fixedly connected with anti-slip teeth, and two springs are provided inside the connecting plate; As a further description of the above technical solution: The bottom of the limiting block is provided with a sliding groove, and the inside of the limiting block is provided with a sliding track; As a further description of the above technical solution: The connecting plate has a moving groove in the middle, and the two springs are located at the top and bottom of the slider, respectively. As a further description of the above technical solution: The cushioning pad is made of polyurethane.

[0007] This utility model has the following beneficial effects: 1. In this utility model, a hydraulic rod provides a bag body for the limiting block, thereby allowing the limiting block to move and better limit the impact mechanism of the shock absorber. The impact mechanism pushes the buffer pad to move, the buffer pad drives the slide rod to move in the limiting block, the slide rod pushes the push plate to move, and the push plate causes the compression spring to deform, thereby reducing the stress generated by the contact between the impact mechanism and the limiting block, and extending the service life of the limiting block.

[0008] 2. In this utility model, the hydraulic rod II drives the connecting plate to move, the connecting plate drives the slider to move, and the slider drives the clamping plate to move, thereby fixing the drilling pipe with the clamping plate, thus connecting the shock absorber and the drilling equipment. The anti-slip teeth prevent slippage between the clamping plate and the drilling equipment. Attached Figure Description

[0009] Figure 1 This is a three-dimensional schematic diagram of an adjustable stroke fully hydraulic shock absorber limiting device proposed in this utility model; Figure 2 This is a schematic diagram of the anti-slip teeth of an adjustable stroke fully hydraulic shock absorber limiting device proposed in this utility model; Figure 3 This is a cross-sectional schematic diagram of the main body of a fully hydraulic shock absorber with adjustable stroke limiting device proposed in this utility model. Figure 4 A cross-sectional schematic diagram of the limiting block of an adjustable stroke fully hydraulic shock absorber limiting device proposed in this utility model; Figure 5 This is a cross-sectional schematic diagram of the connecting plate of an adjustable stroke fully hydraulic shock absorber limiting device proposed in this utility model.

[0010] Legend: 1. Vibrator body; 2. Hydraulic rod one; 3. Limiting block; 4. Buffer pad; 5. Slide rod; 6. Push plate; 7. Compression spring; 8. Groove; 9. Slide groove; 10. Slide track; 11. Hydraulic rod two; 12. Connecting plate; 13. Slider; 14. Spring; 15. Clamping plate; 16. Anti-slip teeth; 17. Placement groove; 18. Moving groove. Detailed Implementation

[0011] 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.

[0012] Reference Figures 1-4This utility model provides an embodiment of an adjustable-stroke fully hydraulic shock absorber limiting device, comprising a shock absorber body 1. The shock absorber body 1 consists of core components such as an upper connector, a spindle, an outer cylinder, an impact hammer, an anvil, a sealing assembly, and a return spring. Axial impact force is generated through the mechanical linkage between the spindle and the impact hammer. The outer cylinder provides structural support, the sealing assembly ensures airtightness during hydraulic or gas-driven operation, and the return spring returns the impact components to their original position. The entire device achieves high-frequency shock operation. This structure is existing technology and will not be described in detail here. A limiting mechanism is installed in the middle of the shock absorber body 1, which controls the shock absorber body. Each part of the impactor 1 is limited to operate within a specified stroke range to prevent it from derailing and falling out of the range. A groove 8 is provided on the inner side of the impactor body 1, allowing the limiting mechanism to operate inside the body. A placement slot 17 is provided on the inner side of the impactor body 1. The limiting mechanism includes a blocking component and a damping component. The blocking component includes a hydraulic rod 2, which is fixedly connected to the middle of the impactor body 1. A limit block 3 is fixedly connected to the output end of the hydraulic rod 2. The impactor body 1 provides support for the hydraulic rod 2, ensuring stable operation and thus preventing the hydraulic... Rod 2 can better provide power to the limiting block 3, thereby enabling the limiting block 3 to better limit the impact mechanism of the shock absorber body 1. A buffer pad 4 is slidably connected to the middle of the limiting block 3. The buffer pad 4 reduces the stress generated when the impact mechanism of the shock absorber body 1 contacts the limiting block 3, thereby reducing the wear on the limiting block 3 and extending its service life. The damping component includes a slide rod 5, which is fixedly connected to the top of the buffer pad 4 and slidably connected to the middle of the limiting block 3. A push plate 6 is fixedly connected to the top of the slide rod 5. A compression spring 7 is installed inside the limiting block 3. The buffer pad 4 pushes the slide bar 5 to move in the middle of the limiting block 3. The slide bar 5 drives the push plate 6 to move inside the limiting block 3, thereby pushing the compression spring 7 to deform, thus reducing the impact on the limiting block 3, reducing the wear on the limiting block 3, and extending its service life. Through the mutual cooperation between the various structures of the limiting mechanism, the impact on the limiting block 3 when it comes into contact with the impact mechanism of the shock absorber body 1 is reduced, thus reducing the wear on the limiting block 3, extending the service life of the limiting block 3, and allowing the limiting block 3 to better limit the impact mechanism of the shock absorber body 1.

[0013] Reference Figure 1 , Figure 4 and Figure 5A hydraulic rod 11 is fixedly connected to the middle of the shock absorber body 1. A connecting plate 12 is fixedly connected to the output end of the hydraulic rod 11. A slider 13 is fixedly connected to the middle of the connecting plate 12. A clamping plate 15 is slidably connected to the outer side of the slider 13. The shock absorber body 1 provides support for the hydraulic rod 11, allowing it to better provide power to the connecting plate 12, thereby moving the connecting plate 12. The connecting plate 12 then moves the slider 13, which in turn moves the clamping plate 15, allowing the shock absorber body 1 to connect with the drilling equipment. Anti-slip teeth 16 are fixedly connected to the outer side of the clamping plate 15 to prevent slippage between the shock absorber body 1 and the drilling equipment. Two springs are installed inside the connecting plate 12. Two springs 14 are located at the top and bottom of the slider 13, respectively. The springs 14 allow the slider 13 to move slightly in the middle of the connecting plate 12 and can be reset. The bottom of the limiting block 3 is provided with a sliding groove 9, and the inside of the limiting block 3 is provided with a sliding track 10. The buffer pad 4 can move in the middle of the limiting block 3 through the sliding groove 9, and the push plate 6 can move inside the limiting block 3 through the sliding track 10. The middle of the connecting plate 12 is provided with a moving groove 18, which allows the slider 13 to move in the middle of the connecting plate 12. The buffer pad 4 is made of polyurethane. The polyurethane allows the buffer pad 4 to absorb kinetic energy and weaken the impact, thereby reducing the wear of the limiting block 3 and extending its service life.

[0014] Working principle: When it is necessary to connect the main body 1 of the shock absorber to the drilling equipment, the hydraulic rod 11 is activated, which drives the connecting plate 12 to move. The connecting plate 12 drives the slider 13 to move, the slider 13 drives the clamping plate 15, and the clamping plate 15 drives the anti-slip teeth 16 to move, thereby clamping the drilling equipment and connecting the main body 1 of the shock absorber to the drilling equipment. At this time, activating the main body 1 of the shock absorber will release the drilling equipment.

[0015] When it is necessary to limit the impact mechanism of the shock absorber body 1, the hydraulic rod 2 is activated to move the limiting block 3. The limiting block 3 moves the buffer pad 4 and the compression spring 7. The buffer pad 4 moves the slide rod 5. The slide rod 5 moves the push plate 6, thereby allowing the limiting block 3 to reach the designated position, thus limiting the impact mechanism. When the impact mechanism contacts the limiting block 3, it pushes the buffer pad 4 to move inward into the limiting block 3. At the same time, the buffer pad 4 pushes the slide rod 5 to move, and the slide rod 5 pushes the push plate 6 to move. The push plate 6 pushes the compression spring 7 to compress and deform, thereby reducing the pressure generated when the impact mechanism contacts the limiting block 3, reducing the wear of the limiting block 3, and thus extending the service life of the limiting block 3.

[0016] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable stroke full hydraulic jar check device comprising a jar body (1) characterized by: A limiting mechanism is installed in the middle of the shock absorber body (1), a groove (8) is provided on the inner side of the shock absorber body (1), and a placement groove (17) is provided on the inner side of the shock absorber body (1). The limiting mechanism includes a blocking component and a deceleration component. The blocking component includes a hydraulic rod (2), which is fixedly connected to the middle of the shock absorber body (1). The output end of the hydraulic rod (2) is fixedly connected to a limiting block (3), and a buffer pad (4) is slidably connected to the middle of the limiting block (3).

2. The adjustable stroke fully hydraulic shock absorber limiting device according to claim 1, characterized in that: The damping component includes a slide bar (5), which is fixedly connected to the top of the buffer pad (4). The slide bar (5) is slidably connected to the middle of the limiting block (3). A push plate (6) is fixedly connected to the top of the slide bar (5). A compression spring (7) is provided inside the limiting block (3).

3. The adjustable stroke fully hydraulic shock absorber limiting device according to claim 1, characterized in that: A hydraulic rod (11) is fixedly connected to the middle of the main body (1) of the shocker. A connecting plate (12) is fixedly connected to the output end of the hydraulic rod (11). A slider (13) is fixedly connected to the middle of the connecting plate (12). A clamping plate (15) is slidably connected to the outside of the slider (13).

4. The adjustable stroke fully hydraulic shock absorber limiting device according to claim 3, characterized in that: The outer side of the clamp (15) is fixedly connected with anti-slip teeth (16), and the inside of the connecting plate (12) is provided with two springs (14).

5. The adjustable stroke fully hydraulic shock absorber limiting device according to claim 1, characterized in that: The bottom of the limiting block (3) is provided with a sliding groove (9), and the inside of the limiting block (3) is provided with a sliding track (10).

6. The adjustable stroke fully hydraulic shock absorber limiting device according to claim 4, characterized in that: The connecting plate (12) has a moving groove (18) in the middle, and the two springs (14) are located at the top and bottom of the slider (13) respectively.

7. The adjustable stroke fully hydraulic shock absorber limiting device according to claim 1, characterized in that: The material of the cushioning pad (4) is polyurethane.

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