Horse head mounting structure of oil pumping unit

Abstract

The utility model discloses a pumping unit horsehead installation structure, and relates to the technical field of beam-pumping units, in particular to the pumping unit horsehead installation structure which comprises a fixing part, a middle shaft, a walking beam and at least one horsehead, strip-shaped through grooves are formed in the two side walls of the end of the walking beam, one end of the walking beam is inserted into the horsehead, and the other end of the walking beam is inserted into the horsehead. The middle shaft penetrates through a strip-shaped through groove in the end of the walking beam and penetrates through the two side walls of the horse head, and the horse head is rotationally connected with the walking beam through the middle shaft. The horse head is rotationally connected with the walking beam through the middle shaft, and the angle of the horse head can be rotationally adjusted by rotating the horse head around the middle shaft; when the middle shaft slides on the walking beam through the strip-shaped through groove, the horse head slides on the walking beam along with the middle shaft, so that the position of the horse head on the walking beam can be adjusted; the horsehead is fixed on the walking beam through the two splayed adjusting assemblies, the splayed structure of the two adjusting assemblies can effectively and stably support and fix the horsehead, and the stability degree of the horsehead on the walking beam is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of beam pumping units, in particular to a pumping unit donkey head mounting structure. Background Art

[0002] The rod head is an essential accessory for beam pumping units. It secures the sucker rod during pumping. During operation, the unit's beam drives the rod head up and down. Long-term operation can cause uneven wear on the sucker rod due to changes in downhole conditions (such as sand production and scaling). By moving the unit, the rod's position can be adjusted to suit the wellhead, reducing wear and preventing further equipment damage.

[0003] Due to the reasons that the pumping unit is too large as a whole, it is difficult to move the position, and the cost of moving is high, some existing technologies adjust the position of the pumping rod by adjusting the position of the burner head to prevent the pumping rod from being worn unevenly. For example, in the published Chinese patent application, publication number: CN204457674U, patent name: Donkey head retraction and giving way walking beam pumping unit, this existing technology adjusts the position of the donkey head by sliding the donkey head on the walking beam to change the position of the donkey head. Although this existing technology can adjust the position of the donkey head, after the position of the donkey head is moved, this existing technology lacks effective fixation of the donkey head, and the stability of the donkey head on the walking beam is reduced. At this time, the pumping unit cannot perform normal pumping operations. This existing technology can only be applied to well repair operations. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides a pumping unit donkey head mounting structure, which solves the problems raised in the above-mentioned background technology.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: the pumping unit donkey head installation structure includes a fixed component, a central shaft, a walking beam, and at least one donkey head, and strip-shaped through-slots are opened on both side walls of the end of the walking beam, one end of the walking beam is inserted into the inside of the donkey head, the central shaft passes through the strip-shaped through-slot on the end of the walking beam, and the central shaft passes through both side walls of the donkey head, and the donkey head is rotatably connected to the walking beam through the central shaft; the central shaft is slidably connected to the walking beam through the strip-shaped through-slot; the fixed component includes a first support shaft, a second support shaft, a third support shaft and two adjustment components, the first support shaft and the second support shaft are respectively fixedly installed on the two side walls of the donkey head, and the two ends of the third support shaft are fixedly installed on the two side walls of the end of the walking beam; one of the adjusting components is installed on the first support shaft and the third support shaft, and the other adjusting component is installed on the second support shaft and the third support shaft, and the two adjusting components are in an eight-shape as a whole.

[0008] Optionally, the adjustment assembly includes an adjustment cylinder, a first screw rod, and a second screw rod, one end of the first screw rod is inserted into one end of the adjustment cylinder and the two are threadedly connected, and the other end of the first screw rod is rotatably connected to the first support shaft or the second support shaft; one end of the second screw rod is inserted into the other end of the adjustment cylinder and the two are threadedly connected, and the other end of the second screw rod is rotatably connected to the third support shaft.

[0009] Optionally, the threads on the first screw rod and the second screw rod are in opposite directions, and when the adjusting cylinder rotates, the first screw rod and the second screw rod are driven to move closer to or away from each other.

[0010] Optionally, the adjustment assembly also includes a second sleeve and two first sleeves, the second sleeve is sleeved on the outer side wall of the third support shaft and the two are rotatably connected, the two first sleeves are respectively sleeved on the first support shaft and the second support shaft, one first sleeve is rotatably connected to the first support shaft, and the other first sleeve is rotatably connected to the second support shaft.

[0011] Optionally, the end of the first screw rod away from the adjusting cylinder is fixedly connected to the outer wall of the first sleeve, and the end of the second screw rod away from the adjusting cylinder is fixedly connected to the outer wall of the second sleeve.

[0012] (3) Beneficial effects

[0013] The utility model provides a donkey head mounting structure for an oil pumping unit, which has the following beneficial effects:

[0014] The pumping unit donkey head mounting structure, through the coordinated arrangement of the walking beam, donkey head, central shaft, and fixed components, enables the pumping unit donkey head mounting structure to have the effect of adjusting the donkey head position and effectively fixing the donkey head, wherein the donkey head is rotatably connected to the walking beam through the central shaft. At this time, the donkey head can be rotated and adjusted by rotating it around the central shaft; when the central shaft slides and displaces on the walking beam through the strip-shaped through-slot, the donkey head also slides and displaces on the walking beam along with the central shaft, thereby being able to adjust the position of the donkey head on the walking beam; the donkey head is fixed to the walking beam through two eight-shaped adjustment components, and the eight-shaped structure of the two adjustment components can effectively and firmly support and fix the donkey head, thereby strengthening the stability of the donkey head on the walking beam. Compared with the existing technology, the present technical solution can realize the movement of the donkey head on the walking beam, the donkey head drives the pumping rod to move, prevents the pumping rod from wearing unevenly, and enables normal pumping operations; it can also effectively support and fix the donkey head, thereby meeting the needs of donkey head well repair operations and the needs of normal pumping operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the donkey head and the walking beam after they are installed in coordination in the donkey head installation structure of the oil pumping unit of the utility model;

[0017] Figure 2 for Figure 1 A in the middle is an enlarged structural diagram;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the fixed components in the donkey head installation structure of the oil pumping unit of the present invention;

[0019] Figure 4 This is a schematic cross-sectional view of the adjustment cylinder in the donkey head installation structure of the oil pumping unit of the present invention;

[0020] Figure 5 This is a schematic cross-sectional view of the central shaft of the donkey head mounting structure of the oil pumping unit of the present invention;

[0021] Figure 6 It is a schematic diagram of the partial three-dimensional structure of the end of the upstream beam of the donkey head installation structure of the oil pumping unit of the present invention.

[0022] In the figure: 1. rocker arm; 2. donkey head; 3. first support shaft; 4. second support shaft; 5. third support shaft; 6. middle shaft; 7. first sleeve; 8. second sleeve; 9. first screw rod; 10. adjusting cylinder; 11. limiting hole; 12. second screw rod; 13. strip-shaped through groove. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indications or implications.

[0024] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances. Obviously, the embodiments described are only some of the embodiments of this utility model, and not all of them.

[0025] See also Figures 1 to 6 The present invention provides a technical solution: a pumping unit pumping head mounting structure, comprising a fixed component, a central shaft 6, a walking beam 1, and at least one pumping head 2. Strip-shaped through-slots 13 are provided on both side walls of the end of the walking beam 1. One end of the walking beam 1 is inserted into the pumping head 2. The central shaft 6 passes through the strip-shaped through-slot 13 on the end of the walking beam 1 and the two side walls of the pumping head 2. The pumping head 2 is rotatably connected to the walking beam 1 via the central shaft 6. The central shaft 6 is slidably connected to the walking beam 1 via the strip-shaped through-slot 13.

[0026] The donkey head 2 is rotatably connected to the walking beam 1 via the central shaft 6. Rotating the donkey head 2 about the central shaft 6 allows the angle of the donkey head 2 to be adjusted. As the central shaft 6 slides and displaces on the walking beam 1 via the strip-shaped through-slot 13, the donkey head 2 also slides and displaces along with the central shaft 6 on the walking beam 1, thereby adjusting the position of the donkey head 2 on the walking beam 1. As the donkey head 2 moves, it also drives the position of the sucker rod, effectively preventing eccentric wear on the sucker rod. Furthermore, during well repair operations, the movement of the donkey head 2 frees up space for repair equipment, facilitating repair operations.

[0027] The fixed components include a first support shaft 3, a second support shaft 4, a third support shaft 5, and two adjustment assemblies. The first support shaft 3 and the second support shaft 4 are fixedly mounted on the two side walls of the donkey head 2, and the ends of the third support shaft 5 are fixedly mounted on the two side walls of the end of the walking beam 1. One adjustment assembly is mounted on the first support shaft 3 and the third support shaft 5, and the other adjustment assembly is mounted on the second support shaft 4 and the third support shaft 5. The two adjustment assemblies are generally in an eight-shaped shape.

[0028] Among them, the fixing component is used to support and fix the donkey head on the walking beam 1. The donkey head is fixed to the walking beam 1 through two eight-shaped adjustment components. The eight-shaped structure of the two adjustment components can effectively and firmly support and fix the donkey head 2, and strengthen the stability of the donkey head 2 on the walking beam 1.

[0029] Specifically, the adjustment assembly includes an adjustment cylinder 10, a first screw rod 9, and a second screw rod 12. One end of the first screw rod 9 is inserted into one end of the adjustment cylinder 10 and the two are threadedly connected. The other end of the first screw rod 9 is rotatably connected to the first support shaft 3 or the second support shaft 4. One end of the second screw rod 12 is inserted into the other end of the adjustment cylinder 10 and the two are threadedly connected. The other end of the second screw rod 12 is rotatably connected to the third support shaft 5.

[0030] Among them, the adjusting cylinder 10, the first screw rod 9, and the second screw rod 12 constitute a rod structure, one end of the rod structure is rotatably connected to the first support shaft 3 or the second support shaft 4 on the donkey head 2, and the other end of the rod structure is rotatably connected to the third support shaft 5 on the rocker 1. The rod structure can support and fix the donkey head 2, and fix the donkey head 2 on the rocker 1.

[0031] More specifically, the threads on the first screw rod 9 and the second screw rod 12 are in opposite directions, and when the adjusting cylinder 10 rotates, the first screw rod 9 and the second screw rod 12 are driven to move closer to or away from each other.

[0032] The length of the entire rod structure can be adjusted by rotating the adjustment cylinder 10. When the adjustment cylinder 10 is rotated clockwise, since the adjustment cylinder 10 is threadedly connected to the first screw rod 9 and the second screw rod 12, the adjustment cylinder 10 rotates and pushes the first screw rod 9 and the second screw rod 12 closer to each other, shortening the length of the rod structure. When the adjustment cylinder 10 is rotated counterclockwise, the adjustment cylinder 10 rotates and pushes the first screw rod 9 and the second screw rod 12 away from each other, lengthening the length of the rod structure.

[0033] More specifically, the adjustment assembly further includes a second sleeve 8 and two first sleeves 7. The second sleeve 8 is sleeved on the outer side wall of the third support shaft 5 and the two are rotatably connected. The two first sleeves 7 are sleeved on the first support shaft 3 and the second support shaft 4, respectively. One first sleeve 7 is rotatably connected to the first support shaft 3, and the other first sleeve 7 is rotatably connected to the second support shaft 4. The end of the first screw rod 9 away from the adjustment cylinder 10 is fixedly connected to the outer side wall of the first sleeve 7, and the end of the second screw rod 12 away from the adjustment cylinder 10 is fixedly connected to the outer side wall of the second sleeve 8.

[0034] The first screw rod 9 rotates around the first support shaft 3 or the second support shaft 4 through the first sleeve 7 , and the second screw rod 12 rotates around the third support shaft 5 through the second sleeve 8 .

[0035] When the rod structures in the two adjustment assemblies become longer at the same time, the two rod structures push the donkey head 2 to move along the strip-shaped through slot 13 on the walking beam 1, and the donkey head 2 moves to the side away from the walking beam 1.

[0036] When the rod structures in the two adjustment assemblies shorten at the same time, the two rod structures pull the donkey head 2 to move along the strip-shaped through slot 13 on the walking beam 1, and the donkey head 2 moves to the side close to the walking beam 1.

[0037] When one rod structure in the two adjustment assemblies becomes longer and the other rod structure becomes shorter, the two rod structures push or pull the donkey head 2 to rotate around the central axis 6 on the walking beam 1, thereby adjusting the rotation angle of the donkey head 2.

[0038] During the specific implementation of the donkey head installation structure of the oil pumping unit shown in the present technical solution, in order to prevent the rod structure from slipping during long-term operation, after the overall length of the rod structure is adjusted, a limit hole 11 is drilled at the connection between the adjusting cylinder 10 and the first screw rod 9, and another limit hole 11 is drilled at the connection between the adjusting cylinder 10 and the second screw rod 12. Pins are inserted into the two limit holes 11 respectively to strengthen the connection strength between the adjusting cylinder 10 and the first screw rod 9 or the second screw rod 12, thereby preventing the rod structure from being stripped or slipped, and avoiding safety hazards.

[0039] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. The donkey head installation structure of the pumping unit is characterized by: The invention comprises a fixed component, a central shaft (6), a walking beam (1), and at least one donkey head (2); a strip-shaped through-slot (13) is provided on both side walls of the end of the walking beam (1); one end of the walking beam (1) is inserted into the inside of the donkey head (2); the central shaft (6) passes through the strip-shaped through-slot (13) on the end of the walking beam (1), and the central shaft (6) passes through both side walls of the donkey head (2); the donkey head (2) is rotatably connected to the walking beam (1) through the central shaft (6); and the central shaft (6) is slidably connected to the walking beam (1) through the strip-shaped through-slot (13); The fixed components respectively include a first support shaft (3), a second support shaft (4), a third support shaft (5) and two adjustment components. The first support shaft (3) and the second support shaft (4) are respectively fixedly mounted on the two side walls of the donkey head (2), and the two ends of the third support shaft (5) are fixedly mounted on the two side walls of the end of the walking beam (1); one of the adjustment components is mounted on the first support shaft (3) and the third support shaft (5), and the other adjustment component is mounted on the second support shaft (4) and the third support shaft (5), and the two adjustment components are in an eight-shaped shape as a whole.

2. The pumping unit donkey head mounting structure according to claim 1, characterized in that: The adjustment assembly comprises an adjustment cylinder (10), a first screw rod (9), and a second screw rod (12), one end of the first screw rod (9) is inserted into one end of the adjustment cylinder (10) and the two are threadedly connected, and the other end of the first screw rod (9) is rotatably connected to the first support shaft (3) or the second support shaft (4); one end of the second screw rod (12) is inserted into the other end of the adjustment cylinder (10) and the two are threadedly connected, and the other end of the second screw rod (12) is rotatably connected to the third support shaft (5).

3. The pumping unit donkey head mounting structure according to claim 2, characterized in that: The threads on the first screw rod (9) and the second screw rod (12) are in opposite directions, and when the adjusting cylinder (10) rotates, it drives the first screw rod (9) and the second screw rod (12) to move closer to or farther away from each other.

4. The pumping unit donkey head mounting structure according to claim 2, characterized in that: The adjustment assembly further comprises a second sleeve (8) and two first sleeves (7), wherein the second sleeve (8) is sleeved on the outer side wall of the third support shaft (5) and the two are rotatably connected, and the two first sleeves (7) are sleeved on the first support shaft (3) and the second support shaft (4) respectively, one first sleeve (7) is rotatably connected to the first support shaft (3), and the other first sleeve (7) is rotatably connected to the second support shaft (4).

5. The pumping unit donkey head mounting structure according to claim 4, characterized in that: The end of the first screw rod (9) away from the adjustment cylinder (10) is fixedly connected to the outer wall of the first sleeve (7), and the end of the second screw rod (12) away from the adjustment cylinder (10) is fixedly connected to the outer wall of the second sleeve (8).

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