An adjustable rod hanger for pumping units

Abstract

The adjustable pumping unit rope hanger relates to the technical field of pumping unit accessories, and comprises a rope hanger body, a steel wire rope, a rope cap, a polished rod and a polished rod fixing clamp, steel wire rope holes are formed in both ends of the rope hanger body, and a central hole A is formed in the center of the rope hanger body; the upper end of the rope hanger body is provided with a first guide groove in the center, a first sliding plate is slidably arranged in the first guide groove, the first sliding plate can slide in the front-back direction of the rope hanger body, the upper end of the first sliding plate is provided with a second guide groove, a second sliding plate is slidably arranged in the second guide groove, the second sliding plate can slide in the left-right direction of the rope hanger body, the polished rod is sequentially threaded through the rope hanger body, the first sliding plate and the second sliding plate, and the upper end of the polished rod is fixedly connected with the polished rod fixing clamp, the polished rod fixing clamp is placed on the second sliding plate, and the position adjustment of the polished rod on the rope hanger is realized by sliding the first sliding plate and the second sliding plate, so that the centering of the polished rod and the well mouth is realized.

Description

Technical Field

[0001] This utility model belongs to the technical field of oil pumping unit accessories, and in particular relates to an adjustable oil pumping unit suspension rope device. Background Technology

[0002] The suspension rope device is a key component in oil extraction, connecting the pumping unit's head to the polished rod. Both ends of the suspension rope device have wire rope holes. A rope cap is fixed to the lower end of the wire rope (braid), with the cap's outer diameter larger than the wire rope hole. After the wire rope is inserted into the hole, the upper surface of the cap engages with the lower surface of the suspension rope device. A central hole in the middle of the suspension rope device allows the polished rod to pass through. After passing through the central hole, a polished rod retaining clip is attached to the upper end of the rod, resting on the upper surface of the suspension rope device, thus enabling the polished rod to be pulled by the wire rope.

[0003] The alignment of the polished rod with the wellhead has always been crucial. If the polished rod is not properly aligned with the wellhead or there is uneven wear, it will inevitably shorten the service life of the wellhead packing box and cause wellhead oil leakage. In severe cases, the polished rod may break, leading to even more serious accidents.

[0004] To address the issue of poor alignment between the polished rod and the wellhead, the common practice is to adjust the position of the drill bit to achieve alignment. However, adjusting the drill bit is too cumbersome and not very convenient to operate.

[0005] The existing suspension rope device cannot achieve the alignment adjustment between the polished rod and the wellhead. Utility Model Content

[0006] To achieve alignment between the polished rod and the wellhead, this invention provides an adjustable pumping unit suspension device. This invention achieves alignment of the polished rod in two dimensions through two guide grooves and two sliding plates, thus pioneering the adjustment of the polished rod's position on the suspension device.

[0007] The technical solution provided by this utility model is: an adjustable oil pump suspension device, including a suspension device body, a steel wire rope, a rope cap, a guide rod, and a guide rod fixing clip. The suspension device body has steel wire rope holes at both ends and a central hole A in the center. The upper center of the suspension device body has a first guide groove that extends through the suspension device body in the front-rear direction. A first sliding plate is slidably disposed within the first guide groove, allowing it to slide in the front-rear direction. The upper center of the first sliding plate has a second guide groove that extends through the suspension device body in the left-right direction. A first sliding plate and a second sliding plate are slidably disposed within a second guide groove. The second sliding plate can slide in the left and right directions of the suspension device body. A central hole B is provided in the center of the first sliding plate, and a central hole C is provided in the center of the second sliding plate. The diameter of the central hole C is smaller than the diameter of the central hole B, and the diameter of the central hole B is smaller than the diameter of the central hole A. A first fixing block is fixedly connected to the suspension device body, and a first set screw is threaded onto the first fixing block. One end of the first set screw abuts against the first sliding plate. A second fixing block is fixedly connected to the first sliding plate, and a second set screw is threaded onto the second fixing block. One end of the second set screw abuts against the second sliding plate.

[0008] A further technical solution is: a limiting sleeve is provided inside the wire rope hole. The limiting sleeve is a non-closed-loop structure, which facilitates the wire rope to be inserted into the limiting sleeve from the non-closed-loop opening. The limiting sleeve is threadedly connected to the wire rope hole, and the upper end of the rope cap abuts against the lower end face of the limiting sleeve.

[0009] A further technical solution is that the side of the limiting sleeve is provided with a slanted notch and two axial straight notches.

[0010] A further technical solution is: slots are provided on both sides of the second guide groove of the first slide plate, an extension block is fixedly connected to the second slide plate, the extension block extends out from the slot, and the second set screw abuts against the extension block.

[0011] A further technical solution is that the suspension device body, the first slider, and the second slider are all made of stainless steel.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. In this utility model, the smooth rod can slide back and forth relative to the suspension device body by sliding the first sliding plate; the smooth rod can slide left and right relative to the suspension device body by sliding the second sliding plate, thereby adjusting the position of the smooth rod relative to the suspension device body in two dimensions, so that the smooth rod is aligned with the wellhead.

[0014] 2. In this invention, the lengths of the two wire ropes are adjusted to be the same by rotating the limiting sleeve at its height within the wire rope hole. The limiting sleeve is a non-closed-loop sleeve, which makes it easier to insert and remove the wire rope.

[0015] 3. The limiting sleeve has a slanted notch in the middle of the side and a straight notch at each end. This makes the notches not completely at the same phase angle of the limiting sleeve. This means that the limiting sleeve has a threaded connection with the wire rope hole at all 360-degree phase angles, which makes the threaded connection evenly distributed and avoids insufficient connection strength between the limiting sleeve and the wire rope sleeve caused by uneven distribution of the threaded connection. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the entire utility model.

[0017] Figure 2 This is a top view of the entire utility model.

[0018] Figure 3 This is a three-dimensional structural diagram of the limiting sleeve in this utility model.

[0019] Figure 4 This is a cross-sectional view of the suspension rope device body in this utility model.

[0020] Figure 5 This is a three-dimensional view of the first skateboard in this utility model.

[0021] Figure 6 This is a perspective view of the first and second skateboards working together in this utility model.

[0022] In the diagram: 1. Wire rope; 2. External hexagonal plate; 3. Limiting sleeve; 4. Rope cap; 5. Suspension device body; 6. Smooth rod; 7. First sliding plate; 8. Second sliding plate; 9. Smooth rod fixing clip; 10. Wire rope hole; 11. First guide groove; 12. Second guide groove; 13. First fixing block; 14. First set screw; 15. Second fixing block; 16. Second set screw; 17. Extension block; 18. Center hole A; 19. Center hole B; 20. Center hole C. Detailed Implementation

[0023] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] This utility model includes a suspension device body 5, a steel wire rope 1, a rope cap 4, a smooth rod 6, and a smooth rod fixing clip 9. The suspension device body 5 has steel wire rope holes 10 at both ends and a central hole A18 in the center. The above is a structure already existing in the prior art, and will not be described in detail here.

[0027] refer to Figure 1-5The innovation of this utility model lies in the following: The upper center of the suspension device body 5 has a first guide groove 11, which penetrates the suspension device body 5 in the front-back direction (the front-back direction refers to the position of the two steel wire ropes 1 on the left and right, and the bare rod 6 in the middle when facing the suspension device). A first sliding plate 7 is slidably disposed within the first guide groove 11, allowing the first sliding plate 7 to slide in the front-back direction of the suspension device body 5. The upper center of the first sliding plate 7 has a second guide groove 12. A second slide plate 8 is slidably disposed within a second guide groove 12, extending through the first slide plate 7 in the left-right direction. The second slide plate 8 can slide in the left-right direction of the suspension device body 5. A central hole B19 is provided in the center of the first slide plate 7, and a central hole C20 is provided in the center of the second slide plate 8. The light rod 6 passes through the center of the central holes A18, B19, and C20 respectively. The light rod fixing clip 9 is fixed to the upper end of the light rod 6 and rests on the second slide plate 8, which supports the light rod fixing clip 9. The diameter of the central hole C20 is smaller than the diameter of the central hole B19, and the diameter of the central hole B19 is smaller than the diameter of the central hole A18. A first fixing block 13 is fixedly connected to the suspension device body 5, and a first set screw 14 is threadedly connected to the first fixing block 13. One end of the first set screw 14 abuts against the first slide plate 7. A second fixing block 15 is fixedly connected to the first slide plate 7, and a second set screw 16 is threadedly connected to the second fixing block 15. One end of the second set screw 16 abuts against the second slide plate 8. In the above scheme, the first set screw 14 can adjust the first sliding plate 7 to slide back and forth relative to the suspension device body 5, thereby adjusting the sliding of the guide rod 6 relative to the suspension device body 5; the second set screw 16 can adjust the second sliding plate 8 to slide left and right relative to the suspension device body 5, thereby adjusting the sliding of the guide rod 6 relative to the suspension device body 5, thus achieving two-dimensional positional adjustment of the guide rod 6 relative to the suspension device body 5. In this embodiment, as... Figure 2 As shown, a first fixing block 13 and a first set screw 14 need to be set on both sides of the suspension device body 5, and a second fixing block 15 and a second set screw 16 need to be set on both sides of the first slide plate 7, so as to ensure that both slide plates can be adjusted in both directions.

[0028] Since the wire rope 1 is the main load-bearing component for the traction rod 6 and the entire sucker string during its up and down strokes, after prolonged operation, the two wire ropes 1 will elongate to different degrees, resulting in inconsistent lengths and causing the suspension device to skew. To solve this problem, a limiting sleeve 3 is provided inside the wire rope hole 10. The limiting sleeve 3 has a non-closed-loop structure, which facilitates the insertion of the wire rope 1 into the limiting sleeve 3 from the non-closed-loop opening. After insertion, the wire rope 1 is located inside the limiting sleeve 3. The limiting sleeve 3 is threadedly connected to the wire rope hole 10, and the upper end of the rope cap 4 abuts against the lower end face of the limiting sleeve 3. When it is necessary to adjust the length of the wire rope 1, it is only necessary to rotate the limiting sleeve 3 to adjust its height within the suspension device body 5. To facilitate the rotation of the limiting sleeve 3, an external hexagon 2 is provided on the outer side of the upper end of the limiting sleeve 3.

[0029] exist Figure 1 and Figure 2 In this case, the non-closed loop opening of the limiting sleeve 3 is a straight notch, and as long as the notch faces outward, the wire rope 1 can be directly inserted into it.

[0030] exist Figure 3 In this design, the limiting sleeve 3 has a slanted notch and two axial straight notches on its side. This ensures that the notches are not completely at the same phase angle on the limiting sleeve 3, so that the limiting sleeve 3 has a threaded connection portion with the wire rope hole 10 at all 360-degree phase angles. This results in a uniform distribution of the threaded connection portion, preventing insufficient connection strength between the limiting sleeve 3 and the wire rope 1 due to uneven thread distribution. However, when it is necessary to remove the wire rope 1, the limiting sleeve 3 must first be unscrewed from the wire rope hole 10.

[0031] like Figure 6 As shown, the second guide groove 12 of the first slide plate 7 has slots on both sides, and an extension block 17 is fixedly connected to the second slide plate 8. The extension block 17 extends out from the slots, and the second set screw 16 abuts against the extension block 17.

[0032] The suspension device body 5, the first slider, and the second slider are all made of stainless steel, which can prevent rust and avoid uneven sliding.

[0033] In summary, this invention solves the problem that existing suspension rope devices cannot adjust the alignment of the guide rod 6. This invention achieves the alignment of the guide rod 6 in two dimensions through two guide grooves and two sliding plates, thus pioneering the adjustment of the position of the guide rod 6 on the suspension rope device. Compared with adjusting the donkey head to align the guide rod with the wellhead, this process is more convenient and less labor-intensive.

Claims

1. An adjustable oil pump suspension device, comprising a suspension device body (5), a steel wire rope (1), a rope cap (4), a polished rod (6), and a polished rod fixing clip (9), wherein the suspension device body (5) has steel wire rope holes (10) at both ends and a center hole A (18) in the center of the suspension device body (5), characterized in that: The suspension device body (5) has a first guide groove (11) at the center of its upper end. The first guide groove (11) passes through the suspension device body (5) in the front-back direction. A first slide plate (7) is slidably disposed in the first guide groove (11). The first slide plate (7) can slide in the front-back direction of the suspension device body (5). The first slide plate (7) has a second guide groove (12) at the center of its upper end. The second guide groove (12) passes through the first slide plate (7) in the left-right direction. A second slide plate (8) is slidably disposed in the second guide groove (12). The second slide plate (8) can slide in the left-right direction of the suspension device body (5). The center of the first slide plate (7) A central hole B (19) is provided, and a central hole C (20) is provided in the center of the second slide plate (8). The diameter of the central hole C (20) is smaller than the diameter of the central hole B (19), and the diameter of the central hole B (19) is smaller than the diameter of the central hole A (18). A first fixing block (13) is fixedly connected to the suspension device body (5). A first set screw (14) is threadedly connected to the first fixing block (13). One end of the first set screw (14) abuts against the first slide plate (7). A second fixing block (15) is fixedly connected to the first slide plate (7). A second set screw (16) is threadedly connected to the second fixing block (15). One end of the second set screw (16) abuts against the second slide plate (8).

2. The adjustable oil pump suspension rope device according to claim 1, characterized in that: A limiting sleeve (3) is provided inside the wire rope hole (10). The limiting sleeve (3) is a non-closed-loop structure, which facilitates the wire rope (1) to be inserted into the limiting sleeve (3) from the non-closed-loop opening. The limiting sleeve (3) is threadedly connected to the wire rope hole (10). The upper end of the rope cap (4) abuts against the lower end face of the limiting sleeve (3).

3. The adjustable oil pump suspension rope device according to claim 2, characterized in that: The limiting sleeve (3) has a slanted notch and two axial straight notches on its side.

4. The adjustable oil pump suspension rope device according to claim 1, characterized in that: The second guide groove (12) of the first slide plate (7) has slots on both sides. An extension block (17) is fixed on the second slide plate (8). The extension block (17) extends out from the slots, and the second set screw (16) abuts against the extension block (17).

5. An adjustable oil pumping unit suspension device according to claim 1, characterized in that: The suspension device body (5), the first slider, and the second slider are all made of stainless steel.

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