Sucker rod automatic positioning device and workover rig including the same

Abstract

Provided is a sucker rod automatic positioning device and a workover rig. The sucker rod automatic positioning device includes a clamping mechanism (1) and a control device, and the clamping mechanism includes a clamping assembly (11) and a driving assembly (12). Wherein the clamping assembly includes a mounting frame (114), two opposed sliding brackets (111), and two clamping portions (113) respectively arranged on the two sliding brackets. The mounting frame includes a guiding portion, and each sliding bracket can slide along the guiding portion; the two clamping portions are used for clamping the sucker rod; wherein the driving assembly (12) is connected to the two sliding brackets and the control device, so that the control device controls the driving assembly to drive the two sliding brackets to move. The sucker rod automatic positioning device automatically realizes the positioning and clamping of the sucker rod through the control device. It avoids manual operation, improves the operation efficiency and is conducive to realizing the automation of the entire workover equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of workover equipment, and particularly to an automatic positioning device for sucker rods in a sucker rod tripping system of workover equipment. Background Art

[0002] In existing workover equipment, when lowering a sucker rod, it is necessary to align the sucker rod on the wellhead with the sucker rod suspended downhole, and then use a hydraulic power tong to rotate and make them engage. In this process, the traveling block grips the sucker rod and moves it to the wellhead to align with the downhole sucker rod. However, due to a certain deviation between the suspension point of the traveling block and the center of the wellhead, the sucker rod suspended at the wellhead cannot be aligned with the center of the wellhead, and a series of factors such as the swaying of the traveling block and the sucker rod, it is impossible to accurately dock the sucker rod with the downhole sucker rod only by gravity when lowering the sucker rod. Therefore, in the prior art, workers usually pull the sucker rod to align it. This method has low automation and low operation efficiency, and at the same time, the on-site operation environment has certain risks, affecting the safety of oilfield operations.

[0003] Therefore, how to automatically support the sucker rod, automatically position and align it with the downhole sucker rod during the lowering process of the sucker rod to reduce manual operations and facilitate the automation of workover equipment is an urgent problem to be solved in this field.

[0004] Furthermore, quickly, efficiently, accurately and reliably realizing the automatic positioning of the sucker rod is also a technical research and development trend in this field.

[0005] The object of the present invention aims to solve at least one aspect of the above problems and defects existing in the prior art and / or other technical problems. Summary of the Invention

[0006] The present invention provides an automatic positioning device for sucker rods. The automatic positioning device for sucker rods includes a clamping mechanism and a control device, and the clamping mechanism includes a clamping assembly and a driving assembly. The clamping assembly includes a mounting frame, two opposed sliding brackets, and two clamping parts respectively arranged on the two sliding brackets. The mounting frame includes a guiding part, and each sliding bracket can slide along the guiding part; the two clamping parts are used for clamping the sucker rod; the driving assembly is connected to the two sliding brackets and the control device, so that the control device controls the driving assembly to drive the two sliding brackets to slide.

[0007] According to an example of the present invention, the sucker rod automatic positioning device further includes a guiding mechanism, which includes a housing, two pawls pivotally arranged in the housing, two guiding members, and two pins. The housing is fixed to the mounting bracket, and two arc-shaped grooves are formed on a first housing wall on a side adjacent to the clamping mechanism; guiding grooves are respectively formed in the two guiding members and are respectively fixedly connected to the two sliding brackets; the two pins are respectively arranged on the two pawls and extend through the arc-shaped grooves to reach the guiding grooves, wherein the size of each pin is adapted to the size of the guiding groove to slide in the guiding groove when the sliding bracket moves, thereby driving the closing and opening of the two pawls.

[0008] According to an example of the present invention, the guiding groove is an L-shaped groove, and the L-shaped groove includes a first guiding section and a second guiding section that are perpendicular to each other, wherein the first guiding section is perpendicular to the sliding direction of the sliding bracket.

[0009] According to an example of the present invention, the housing further includes a second housing wall opposite to the first housing wall, and substantially V-shaped openings are formed on both the first housing wall and the second housing wall.

[0010] According to an example of the present invention, there are two guiding mechanisms, which are respectively arranged on the upper and lower sides of the clamping mechanism.

[0011] According to an example of the present invention, the guiding part includes two symmetrical halves, each half corresponding to a sliding bracket, and two opposed sliding guide grooves are respectively arranged on each half, and correspondingly each sliding bracket includes two sliders to slide in the two sliding guide grooves respectively.

[0012] According to an example of the present invention, each clamping part includes two rotatable clamping rollers arranged side by side, and the four clamping rollers of the two clamping parts jointly clamp the sucker rod.

[0013] According to an example of the present invention, the driving assembly includes a first power cylinder connected to the control device and two sets of link assemblies connected to the output shaft of the first power cylinder, wherein the two sets of link assemblies are respectively connected to the two sliding brackets.

[0014] According to an example of the present invention, the sucker rod automatic positioning device further includes a lifting mechanism, which includes a column, a lifting support, and a driver. A guide rail is formed on the column; the lifting support is used to carry the clamping mechanism and can slide on the guide rail; the driver is connected to the control device and the lifting support.

[0015] According to an example of the present invention, the sucker rod automatic positioning device further includes a horizontal feeding mechanism, which includes a second power cylinder connected to the control device, a first movable support, a second movable support, and a transmission mechanism. One end of the second power cylinder is connected to the lifting support, and the other end of the second power cylinder is connected to the first movable support; the second movable support is used to carry the clamping mechanism. The transmission mechanism includes two parallel first connecting rods and two parallel second connecting rods. The two ends of each first connecting rod are respectively pivotally connected to the lifting support and the first movable support, and the two ends of each second connecting rod are respectively pivotally connected to the first movable support and the second movable support. Tooth portions are provided at the ends of the adjacent first connecting rod and second connecting rod that are connected to the first movable support, and the two tooth portions mesh with each other to drive the second movable support to move.

[0016] According to an example of the present invention, there are two sets of the transmission mechanisms, and the two sets of the transmission mechanisms are arranged side by side on both sides of the first movable support transversely to the moving direction of the second movable support.

[0017] The present invention also provides a workover rig, which includes the sucker rod automatic positioning device described in each of the above solutions.

[0018] In the sucker rod positioning device and the workover rig of the above exemplary technical solutions, the driving assembly is controlled by the control device to automatically drive the two sliding brackets of the clamping assembly, so as to realize the automatic clamping and positioning of the sucker rod. Manual operation is avoided, the operation efficiency is improved, and it is beneficial to realize the automation of the entire workover equipment. Moreover, the positioning device quickly deflects the sucker rod into the working area of the clamping mechanism through the guiding mechanism, and can efficiently realize the automatic positioning of the sucker rod. Further, by linking the guiding mechanism and the clamping mechanism, the two are driven by the same driving assembly to act, and the clamping and positioning of the sucker rod are realized quickly and efficiently with a simple mechanism. Furthermore, the setting of the V-shaped opening on the housing of the guiding mechanism realizes the straightening and guiding of the sucker rod. The installation frame includes sliding guide grooves arranged side by side up and down to accommodate the upper and lower sliders, which is conducive to the more stable sliding operation of the sliding bracket and the clamping part thereon. Moreover, the structure of the clamping part including four rotatable clamping rollers enables the positioning of sucker rods with different rod diameters, and reduces the damage of the clamping part to the sucker rod when the sucker rod rotates. Description of the Drawings

[0019] Referring to the following detailed description and drawings, the features and advantages of the embodiments of the present invention will become apparent, wherein:

[0020] Figure 1 A three-dimensional schematic diagram showing a sucker rod automatic positioning device according to an exemplary embodiment of the present invention;

[0021] Figure 2 Shows Figure 1 A perspective schematic view of another angle of the sucker rod automatic positioning device shown;

[0022] Figure 3 Shows Figure 1 A perspective schematic view of yet another angle of the sucker rod automatic positioning device shown;

[0023] Figure 4 Shows Figure 1 A perspective schematic view of the clamping mechanism and guiding mechanism of the sucker rod automatic positioning device shown;

[0024] Figure 5 Shows Figure 1 A top view of the clamping mechanism of the sucker rod automatic positioning device shown;

[0025] Figure 6 Shows Figure 4 A perspective schematic view of another angle of the clamping mechanism and guiding mechanism shown;

[0026] Figure 7 Shows Figure 4 A front view schematic of the clamping mechanism and guiding mechanism shown;

[0027] Figure 8 Shows a cross-sectional view taken along Figure 7 Line A-A in;

[0028] Figure 9 Shows Figure 1 A perspective schematic view of the horizontal feeding mechanism of the sucker rod automatic positioning device shown; and

[0029] Figure 10 Shows Figure 1 A perspective schematic view of the lifting mechanism of the sucker rod automatic positioning device shown. Detailed implementation mode

[0030] Hereinafter, through embodiments and in conjunction with the accompanying drawings, the technical solutions of the present invention will be further specifically described. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall concept of the present invention and should not be construed as a limitation to the present invention.

[0031] In addition, in the following detailed description, for the sake of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments. However, obviously, one or more embodiments can also be implemented without these specific details. In addition, to simplify the drawings, well-known structures and devices are not shown in a schematic manner.

[0032] As Figure 1-8As shown, as an exemplary embodiment of the present invention, the sucker rod automatic positioning device of the present invention includes a clamping mechanism 1 and a control device. And the clamping mechanism 1 includes a clamping assembly 11 and a driving assembly 12. Wherein the clamping assembly 11 includes a mounting frame 114, two opposed sliding brackets 111, and two clamping portions 113 respectively disposed on the two sliding brackets 111. The mounting frame 114 includes a guiding portion, and a sliding guide groove 1141 is formed in the guiding portion as an example. At least a part of each sliding bracket 111 can slide in the sliding guide groove 1141. The two clamping portions 113 are used for clamping the sucker rod. The driving assembly 12 is connected to the two sliding brackets 111 and the control device, so that the control device controls the driving assembly 12 to drive the two sliding brackets 111 to move.

[0033] In the sucker rod positioning device of the above example, since it includes a control device and a driving assembly 12, it can automatically drive the two sliding brackets of the clamping assembly, so as to realize automatic clamping and positioning of the sucker rod. Compared with the traditional manual positioning of the sucker rod, the operation efficiency is improved. Further, due to the special shape and easy deformation of the sucker rod, etc., the operation of the sucker rod in the existing workover technology is basically carried out manually, and the automatic operation of the sucker rod has become a bottleneck in the whole machine automation process of the workover rig. The sucker rod automatic positioning device of the present invention has important promotion significance for realizing the automation of the sucker rod operation and the whole workover rig.

[0034] Exemplarily, as Figure 4-8 shown, the sucker rod automatic positioning device further includes a guiding mechanism 2. The guiding mechanism 2 includes a housing 21 fixed to the mounting frame 114, two pawls 23 pivotally disposed in the housing 21, two guiding members 24, and two pins 25. Wherein two arc-shaped grooves 22 are formed on a first housing wall 26 on a side of the housing 21 adjacent to the clamping mechanism 1; the two guiding members 24 are respectively fixedly connected to the two sliding brackets 111 and guiding grooves 241 are respectively formed in the two guiding members; the two pins 25 are respectively disposed on the two pawls 23 and extend through the arc-shaped grooves 22 to reach the guiding grooves 241. The size of each pin 25 is adapted to the size of the guiding groove to slide in the guiding groove 241 when the sliding bracket 111 moves, thereby driving the closing and opening of the two pawls 23.

[0035] In this exemplary embodiment, since the two guiding members 24 are respectively fixedly connected to the two sliding brackets 111, when the two sliding brackets 111 make a sliding movement driven by the driving assembly 12, they drive the guiding members 24 to move. The guiding members 24 drive the rotation of the pawls 23 through the pins 25 therein, and the pawls deflect the sucker rod towards the working area of the clamping portion 113 of the clamping assembly, realizing the guiding and rough positioning of the sucker rod. Using this guiding mechanism to quickly deflect the sucker rod to the working area of the clamping mechanism can quickly and efficiently realize the automatic positioning process of the sucker rod.

[0036] Exemplarily, as Figure 6 、 8 shown, the guiding groove 241 in the guiding member 24 is an L-shaped groove, and the L-shaped groove includes a first guiding section 2411 and a second guiding section 2412 that are perpendicular to each other, where the first guiding section 2411 is perpendicular to the sliding direction of the sliding bracket 111.

[0037] In this example, during the process in which the two sliding brackets 111 move inward (towards each other) driven by the driving assembly 12, when the pin 25 is in the first guiding section 2411 of the L-shaped guiding member 24, the two pawls 23 are respectively pivoted in the closing direction driven by the pin 25 to deflect the sucker rod towards the two clamping portions 113 of the clamping assembly 11. At the same time, the pin 25 moves along the first guiding section 2411 towards the second guiding section 2412 of the L-shaped groove. As Figure 8 shown, when the pin 25 moves into the second guiding section 2412, the two pawls 23 stop pivoting due to the constraint of the groove wall of the second guiding section 2412 on the pin 25, while the two sliding brackets 111 still continue to feed towards each other driven by the driving assembly 12 until the two clamping portions 113 clamp the sucker rod. Therefore, under the guidance of the guiding member 24 with the L-shaped groove, the guiding mechanism first deflects the sucker rod to perform rough positioning of the sucker rod, so that the sucker rod is within the working range of the clamping mechanism, and then the clamping portion 113 realizes the clamping of the sucker rod. Moreover, in this example, by linking the guiding mechanism and the clamping mechanism, the two are driven by the same driving assembly to act, and the clamping and positioning of the sucker rod are quickly and efficiently realized with a simple mechanism. In the second guiding section 2412, the two pawls 23 no longer continue to move, avoiding interference with the rotation of the sucker rod when screwing and fastening the clamped sucker rod.

[0038] Furthermore, as Figure 4 、 6 、8 shown, the housing 21 further includes a second housing wall 27 opposite to the first housing wall 26, and substantially V-shaped openings 211 are formed on both the first housing wall 26 and the second housing wall 27. The V-shaped openings 211 can also play a role in straightening and guiding the sucker rod, facilitating the guiding of the sucker rod towards the clamping portion 113 of the clamping device.

[0039] Preferably, as shown in Figure 1-3 , 4, and 6, there are two guiding mechanisms 2, which are respectively arranged on the upper and lower sides of the clamping mechanism 1. The sucker rod automatic positioning device with this structure is more stable and can guide and roughly position the sucker rod more stably and reliably.

[0040] Exemplarily, as shown in Figure 4-7 , the guiding part for the sliding bracket 111 in the mounting bracket 114 of the clamping assembly 11 includes two symmetric half parts (shown as one on the left and one on the right in Figure 6 ), each half part corresponding to a sliding bracket 111, and two opposed sliding guide grooves 1141 are provided on each half part (shown as two up and down in Figure 6 ). Correspondingly, each sliding bracket 111 includes two sliders 1111 (shown as two up and down in Figure 6 ) to slide in the two sliding guide grooves 1141 respectively. By adopting the form of the upper and lower opposed sliders 1111 sliding in the two opposed sliding guide grooves 1141 in this example, a firmer support for the sliding bracket 111 is achieved and it is beneficial for the more stable sliding of the sliding bracket.

[0041] As shown in Figure 5 , each clamping part 113 includes two rotatable clamping rollers arranged in parallel. The four clamping rollers of the two clamping parts jointly clamp the sucker rod. In this example, the two clamping rollers arranged in parallel form a substantially V-shaped space, and the two substantially V-shaped spaces formed by the four clamping rollers of the two clamping parts jointly accommodate and clamp the sucker rod. Since the clamping part can be adjusted in the left-right direction as the sliding bracket 111 moves, sucker rods with different rod diameters can be positioned. When screwing the sucker rod on the wellhead and the suspended downhole sucker rod later, the two groups of clamping rollers hold the sucker rod body tightly to achieve straightening and alignment. At the same time, the design of the rotatable clamping rollers can reduce the friction force on the sucker rod and reduce the damage of the clamping device to the sucker rod when the sucker rod rotates.

[0042] As shown in Figure 4 , 5 , as an example, the drive assembly 12 includes a first power cylinder 121 connected to the control device and two sets of link assemblies 122 connected to the output shaft of the first power cylinder 121. The two sets of link assemblies 122 are respectively connected to the two sliding brackets 111, so as to drive the two sliding brackets 111 to slide towards or away from each other correspondingly when the output shaft of the first power cylinder 121 makes a reciprocating motion. The power cylinder 121 can be, for example, a hydraulic cylinder or a pneumatic cylinder, and can be connected to the mounting bracket 114 through a flange, as shown in Figure 4 , 5 .

[0043] As an exemplary embodiment of the present invention, as shown in Figure 1-3 and 10, the sucker rod automatic positioning device of the present invention may further include a lifting mechanism 4. The lifting mechanism includes a column 41, a lifting support 42, and a driver (not shown, which may be, for example, a power cylinder disposed in the column 41). A guide rail 43 is formed on the column 41. The lifting support 42 is capable of sliding on the guide rail 43, and the clamping mechanism 1 (and the guiding mechanism 2 and the horizontal feeding mechanism 3 to be described below, if any) is carried on the lifting support. The driver is connected to the control device and the lifting support 42 to drive the movement of the lifting support 42 under the control of the control device. After the clamping mechanism 1 clamps and positions the sucker rod, the lifting mechanism 4 drives the lifting support 42 to move downward to complete the docking with the downhole sucker rod, and completes other lifting actions of the automatic positioning device as required.

[0044] In order to retract the sucker rod positioning device when it is not necessary to hold and position the sucker rod, so as to make room for the operation of other workover devices, the sucker rod automatic positioning device of the present invention further includes a horizontal feeding mechanism 3. As shown in Figure 1-3 and 9, the horizontal feeding mechanism includes a second power cylinder 31 connected to the control device, a first movable support 32, a second movable support 33, and a transmission mechanism. One end of the second power cylinder 31 is connected to the lifting support 42, and the other end of the second power cylinder 31 is connected to the first movable support 32; the second movable support 33 is used to carry the clamping mechanism 1 (and the guiding mechanism 2, if any). The transmission mechanism includes two parallel first connecting rods 331 and two parallel second connecting rods 332. The two ends of each first connecting rod 331 are respectively pivotally connected to the lifting support 42 and the first movable support 32, and the two ends of each second connecting rod 332 are respectively pivotally connected to the first movable support 32 and the second movable support 33. Tooth portions 333 are provided at the ends of the adjacent first connecting rod 331 and second connecting rod 332 that are connected to the first movable support 32 (only a pair of tooth portions are shown in Figure 9 ), and the two tooth portions 333 mesh with each other to drive the movement of the second movable support 33.

[0045] In this example, as shown in Figure 9As shown, the tooth portion 333 of the first link 331 may be integrally formed with the first link 331 or, for example, fixedly connected to the end of the first link 331 by welding. The pivot point of this tooth portion is the pivot point of the first link 331. For example, the tooth portion 333 may be formed at the end of the inner bracket of the pivot bracket 3311 of the first link 331. The tooth portion 333 of the second link 332 may be integrally formed with the second link 332 or, for example, fixedly connected to the end of the second link by welding. The pivot point of this tooth portion is the pivot point of the second link 332. For example, the tooth portion 333 may be formed at the end of the inner bracket of the pivot bracket 3321 of the second link 332. When the driving rod of the second power cylinder 31 extends, the first movable support 32 moves and the two tooth portions 333 rotate meshingly with each other (in Figure 9 the tooth portion 333 of the first link 331 rotates clockwise and the tooth portion 333 of the second link 332 rotates counterclockwise), thereby driving the rotation of the first link and the second link and the movement of the second movable support 33. Under the control of the control device, the clamping mechanism reaches the required position through the second power cylinder 31. After the clamping and positioning of the sucker rod are completed, the clamping mechanism 1 releases the sucker rod and the horizontal feed mechanism acts in the reverse direction to retract. The horizontal feed mechanism with this structure realizes convenient telescopic displacement in the case of horizontal displacement with a large stroke.

[0046] Preferably, as Figure 9 shown, there are two sets of transmission mechanisms of the horizontal feed mechanism. The two sets of transmission mechanisms are arranged side by side on both sides of the first movable support 32 in a direction substantially transverse to the moving direction of the second movable support 33, thereby realizing a more stable horizontal feed mechanism and a smoother horizontal feed movement.

[0047] In each of the above exemplary solutions, the sucker rod automatic positioning device can simulate manual work to support, clamp and dock the sucker rod during the sucker rod lowering operation. The guiding mechanism in it performs rough positioning or pre-positioning on the sucker rod, guides the sucker rod towards the clamping mechanism, and then the clamping mechanism clamps and precisely positions the sucker rod. The horizontal feed mechanism can realize the horizontal advance and retreat of the front-end structure of the device, such as the clamping mechanism and the guiding mechanism. When the positioning device does not need to work, the horizontal feed mechanism can retract to return to the standby position to make room for other wellhead devices. As an auxiliary tool for automated workover operations, this device can replace manual work to complete the positioning and docking of the sucker rod and plays a key role in automated workover operations.

[0048] The present invention also provides a workover rig, which includes the sucker rod automatic positioning device described in each of the above solutions. The workover rig thus has the advantages of the sucker rod automatic positioning device described in each of the above examples, and has a high degree of automation, which is more beneficial to realizing the automation of the entire workover rig, that is, beneficial to realizing the automation that does not rely on wellhead operators but only needs to operate the control system.

[0049] Although some embodiments of the general concept of the present invention have been shown and described, those of ordinary skill in the art will understand that changes can be made to these embodiments without departing from the principles and spirit of the general concept of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. An automatic positioning device for sucker rods, characterized in that, The sucker rod automatic positioning device includes a clamping mechanism (1) and a control device, and the clamping mechanism (1) includes a clamping assembly (11) and a driving assembly (12), wherein the clamping assembly (11) includes: A mounting bracket (114), and the mounting bracket (114) includes a guiding portion; Two opposed sliding brackets (111), and each sliding bracket (111) can slide along the guiding portion; and Two clamping portions (113) respectively arranged on the two sliding brackets (111) for clamping the sucker rod; Wherein the driving assembly (12) is connected to the two sliding brackets (111) and the control device, so that the control device controls the driving assembly (12) to drive the two sliding brackets (111) to slide; And wherein, the sucker rod automatic positioning device further includes a guiding mechanism (2), and the guiding mechanism (2) includes: A housing (21) fixed to the mounting bracket (114), and two arc-shaped grooves (22) are formed on a first housing wall (26) on a side of the housing (21) adjacent to the clamping mechanism (1); Two pawls (23) pivotally arranged in the housing (21); Two guiding members (24) respectively formed with guiding grooves (241) therein and respectively fixedly connected to the two sliding brackets (111); Two pins (25) respectively arranged on the two pawls (23) and extending through the arc-shaped grooves (22) to reach the guiding grooves (241), wherein the size of each pin (25) is adapted to the size of the guiding groove to slide in the guiding groove (241) when the sliding bracket (111) moves, thereby driving the two pawls (23) to close and open.

2. The sucker rod automatic positioning device according to claim 1, wherein The guiding groove is an L-shaped groove, and the L-shaped groove includes a first guiding section and a second guiding section perpendicular to each other, wherein the first guiding section is perpendicular to the sliding direction of the sliding bracket (111).

3. The sucker rod automatic positioning device according to claim 1, wherein, The housing (21) further includes a second housing wall (27) opposite to the first housing wall (26), and V-shaped openings (211) are formed on both the first housing wall (26) and the second housing wall (27).

4. The sucker rod automatic positioning device according to any one of claims 1-3, characterized in that, There are two guiding mechanisms (2), which are respectively arranged on the upper and lower sides of the clamping mechanism (1).

5. The sucker rod automatic positioning device according to claim 1, wherein, The guiding portion includes two symmetric halves, each half corresponding to a sliding bracket (111), and two opposed sliding guide grooves (1141) are arranged on each half, and correspondingly each sliding bracket (111) includes two sliders (1111) sliding in the two sliding guide grooves (1141) respectively.

6. The sucker rod automatic positioning device according to claim 1, characterized in that Each clamping portion (113) includes two rotatable clamping rollers arranged in parallel, and the four clamping rollers of the two clamping portions jointly clamp the sucker rod.

7. The sucker rod automatic positioning device according to claim 1, characterized in that The driving assembly (12) includes: A first power cylinder (121) connected to the control device; Two sets of connecting rod assemblies connected to the output shaft of the first power cylinder (121), and the two sets of connecting rod assemblies are respectively connected to the two sliding brackets (111).

8. The sucker rod automatic positioning device according to claim 1, characterized in that The sucker rod automatic positioning device further includes a lifting mechanism (4), and the lifting mechanism (4) includes: A column (41) with a guide rail (43) formed thereon; A lifting support (42) for carrying the clamping mechanism (1) and capable of sliding on the guide rail (43); and A driver connected to the control device and the lifting support (42).

9. The automatic positioning device for sucker rods according to claim 8, wherein, The sucker rod automatic positioning device further includes a horizontal feeding mechanism (3), and the horizontal feeding mechanism includes: A second power cylinder (31) connected to the control device; A first movable support (32), one end of the second power cylinder (31) is connected to the lifting support (42), and the other end of the second power cylinder (31) is connected to the first movable support (32); A second movable support (33) for carrying the clamping mechanism (1); and A transmission mechanism, and the transmission mechanism includes: Two parallel first connecting rods (331), and both ends of each first connecting rod (331) are respectively pivotally connected to the lifting support (42) and the first movable support (32); and Two parallel second connecting rods (332), and both ends of each second connecting rod (332) are respectively pivotally connected to the first movable support (32) and the second movable support (33). Tooth portions are provided at the ends of the adjacent first connecting rod (331) and second connecting rod (332) that are connected to the first movable support (32), and the two tooth portions mesh with each other so that the pivoting of the first connecting rod drives the pivoting of the second connecting rod and further drives the movement of the second movable support (33).

10. The sucker rod automatic positioning device according to claim 9, characterized in that, There are two sets of the transmission mechanisms, and the two sets of transmission mechanisms are arranged side by side on both sides of the first movable support transversely to the moving direction of the second movable support (33).

11. A workover rig, characterized in that, Including the sucker rod automatic positioning device according to any one of claims 1-10.

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