A VR plug installation manipulator for casing head and tubing head

Abstract

The present invention relates to the technical field of VR plug installation, and in particular to a VR plug installation manipulator for casing head and tubing head, comprising a long rod and a clamping unit, wherein the clamping unit comprises a clamping column arranged at the end of the long rod, a hexagonal groove arranged at the end of the clamping column, and a limit assembly arranged at the end of the clamping column. The VR plug installation manipulator for casing head and tubing head can be clamped with the groove of the VR plug by a clamping assembly, thereby realizing easy fixation of the VR plug, facilitating fixing the VR plug in the hexagonal groove at the end of the clamping column, and realizing that the VR plug will not fall off when being put in and taken out.

Description

Technical Field

[0001] The invention relates to the technical field of VR plug installation, in particular to a VR plug installation manipulator for a casing head and a tubing head. Background Art

[0002] During drilling or oil production operations, in order to prevent leakage of the seal at the side connection of the casing head and the tubing head, the sealing test of the connection should be qualified before the operation. At this time, it is necessary to use a picking and sending tool to send the VR plug into the side outlet of the casing head and the tubing head body, and then return the tool to perform a sealing test on the connection. After the test is completed, the VR plug is removed with a tool.

[0003] During the feeding or taking out process, the tool and the VR plug need to be stuck and separated. The traditional feeding tool relies on the O-ring stuck in the groove of the VR plug to prevent the feeding tool from being separated from the VR plug. However, the O-ring has large resistance, is difficult to install, and is easy to damage. The feeding tool and the VR plug are often easily separated, causing safety hazards. To this end, the present invention provides a VR plug installation manipulator for casing heads and tubing heads. Summary of the invention

[0004] In view of the problem that the existing casing head and tubing head are difficult to install using VR plugs, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide a VR plug installation robot for casing heads and tubing heads, which is convenient for efficient installation and removal of VR plugs.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: A VR plug installation manipulator for casing head and tubing head, comprising a long rod and a clamping unit, wherein the clamping unit comprises a clamping column arranged at the end of the long rod, a hexagonal groove arranged at the end of the clamping column, and a limit assembly arranged at the end of the clamping column;

[0007] The limiting assembly includes a mounting slot disposed in the clamping column, a clamping claw hingedly disposed in the mounting slot, and a spring 1 disposed between the clamping claw and the mounting slot;

[0008] One end of the clamping claw is inserted into the hexagonal groove;

[0009] The clamping jaw comprises a rod body connected to the spring, and a limit block arranged at the end of the rod body;

[0010] The limit block and the spring 1 are respectively located at two ends of the rod body;

[0011] The middle part of the rod body is hingedly connected to the mounting slot;

[0012] The front end and the rear end of the bottom of the limiting block are both set as inclined surfaces.

[0013] As a preferred solution of the VR plug installation manipulator for casing head and tubing head of the present invention, a handle is provided at the end of the long rod.

[0014] As a preferred solution of the VR plug installation manipulator for casing head and tubing head of the present invention, an auxiliary unit is provided between the long rod and the clamping column;

[0015] The auxiliary unit includes a limiting shaft arranged at the end of the long rod, a limiting groove arranged on the limiting shaft, a connecting shaft slidably arranged in the limiting groove, and a second spring arranged between the connecting shaft and the long rod;

[0016] The end of the connecting shaft is connected to the clamping column.

[0017] As a preferred solution of the VR plug installation manipulator for casing head and tubing head of the present invention, wherein: the limiting groove comprises a long groove and a spiral groove arranged on the limiting shaft;

[0018] The long groove is connected to the spiral groove.

[0019] As a preferred solution of the VR plug installation manipulator for casing head and tubing head of the present invention, wherein: the end of the long rod is provided with a receiving groove;

[0020] The second spring and the end of the limiting shaft are both connected to the bottom of the accommodating groove;

[0021] The connecting shaft is slidably inserted in the containing groove, and the outer side of the connecting shaft is sealed with the inner wall of the containing groove;

[0022] The auxiliary unit also includes a positioning assembly arranged on the connecting shaft.

[0023] As a preferred solution of the VR plug installation manipulator for casing head and tubing head of the present invention, the positioning assembly at least comprises a connecting groove 1 arranged on the connecting shaft, a plurality of slide grooves 1 arranged in the connecting shaft, and a positioning part slidably arranged in the slide groove 1;

[0024] The bottom of the plurality of chutes is connected;

[0025] The two ends of the connecting groove one are respectively communicated with the sliding groove one and the containing groove.

[0026] As a preferred solution of the VR plug installation manipulator for casing head and tubing head of the present invention, the positioning part comprises at least one casing slidably arranged in the slide groove one, a spring three is arranged inside the innermost casing, an arc cover is arranged at the end of the spring three, and a ball valve is rollingly arranged between the arc cover and the end of the casing;

[0027] The innermost sleeve is provided with a pressure relief port;

[0028] The ball valve and the pressure relief port are sealed.

[0029] As a preferred solution of the VR plug installation manipulator for casing head and tubing head of the present invention, the positioning assembly further comprises at least one connecting groove 2 arranged on the long rod, a plurality of sliding grooves 2 arranged in the long rod, and at least one sleeve slidably arranged in the sliding groove 2;

[0030] The two ends of the second connecting groove are respectively communicated with the second sliding groove and the accommodating groove.

[0031] The beneficial effects of the present invention are as follows: the VR plug is easily fixed by clamping the clamping component with the groove of the VR plug, and the VR plug is conveniently fixed in the hexagonal groove at the end of the clamping column, so that the VR plug will not fall off when being put in and taken out. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0033] Figure 1 It is a schematic diagram of the overall structure of a VR plug installation manipulator for a casing head and a tubing head according to the present invention.

[0034] Figure 2 It is a schematic diagram of the clamping column structure of the VR plug installation manipulator for the casing head and the tubing head of the present invention.

[0035] Figure 3 It is a schematic structural diagram of the auxiliary unit of the VR plug installation manipulator for casing head and tubing head of the present invention.

[0036] Figure 4 It is a schematic diagram of the limit groove structure of the VR plug installation manipulator for the casing head and the tubing head of the present invention.

[0037] Figure 5 It is a schematic diagram of the structure of the positioning assembly of the VR plug installation manipulator for the casing head and the tubing head of the present invention.

[0038] Figure 6 It is a schematic diagram of the internal structure of the receiving groove of the VR plug installation manipulator for the casing head and the tubing head of the present invention.

[0039] Figure 7 for Figure 6 A magnified image of area A.

[0040] In the figure: 100, long rod; 200, clamping unit; 201, clamping column; 202, hexagonal slot; 203, limit assembly; 203a, mounting slot; 203b, clamping claw; 203c, spring 1; 203b-1, rod body; 203b-2, limit block; 101, handle; 300, auxiliary unit; 301, limit shaft; 302, limit slot; 303, connecting shaft; 304, spring 2; 3 02a, long groove; 302b, spiral groove; 102, accommodating groove; 305, positioning assembly; 305a, connecting groove one; 305b, slide groove one; 305c, positioning part; 305c-1, sleeve; 305c-2, spring three; 305c-3, arc cover; 305c-4, ball valve; 305c-5, pressure relief port; 305d, connecting groove two; 305e, slide groove two; 305f, sleeve. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0042] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0043] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0044] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0045] Example 1, reference Figure 1 and Figure 2 , which is the first embodiment of the present invention, provides a VR plug installation robot for a casing head and a tubing head, and the device includes a long rod 100 and a clamping unit 200.

[0046] Among them, the clamping unit 200 includes a clamping column 201 arranged at the end of the long rod 100, a hexagonal groove 202 arranged at the end of the clamping column 201, and a limiting assembly 203 arranged at the end of the clamping column 201, wherein the clamping column 201 and the long rod 100 can be integrally formed or fixedly connected by threads or positioning pins.

[0047] The bottom of the VR plug is hexagonal, and a groove is provided in the VR plug. The hexagonal groove 202 matches with the bottom of the VR plug, and the limiting component 203 matches with the groove. The limiting component 203 can be made of multiple cylinders and L-shaped long rods 100 arranged at the ends of the cylinders. The cylinders control the multiple long rods 100 to move closer and apart to clamp and release the VR plug.

[0048] Furthermore, the opening end of the hexagonal slot 202 is configured to be trumpet-shaped, so as to facilitate inserting the end of the VR into the opening of the hexagonal slot 202; a handle 101 is provided at the end of the long rod 100, and the handle 101 is disc-shaped and used to increase the torque, thereby achieving the purpose of saving effort.

[0049] Furthermore, another embodiment of the limit assembly 203 includes a mounting groove 203a arranged in the clamping column 201, a clamping jaw 203b hingedly arranged in the mounting groove 203a, and a spring 203c arranged between the clamping jaw 203b and the mounting groove 203a; one end of the clamping jaw 203b is inserted into the hexagonal groove 202.

[0050] Furthermore, the clamp 203b includes a rod body 203b-1 connected to a spring 1 203c, and a limit block 203b-2 disposed at the end of the rod body 203b-1; the limit block 203b-2 and the spring 1 203c are respectively located at two ends of the rod body 203b-1.

[0051] The middle part of the rod body 203b-1 is hinged to the mounting groove 203a; the front end and the rear end of the bottom of the limiting block 203b-2 are both set as inclined surfaces.

[0052] When installing the VR plug, insert the VR plug into the hexagonal slot 202. The VR plug first abuts against the inclined surface of the front end of the limit block 203b-2, squeezes and tilts the limit block 203b-2 and compresses the spring 1 203c. When the VR plug is inserted into the hexagonal slot 202, the limit block 203b-2 coincides with the groove, and the limit block 203b-2 falls into the groove under the elastic force of the spring 1 203c.

[0053] Then, the VR plug is sent into the bypass thread of the casing head or the tubing head through the long rod 100, and the handle 101 is rotated to tighten the VR plug. Then, the long rod 100 is pulled out. At this time, the inclined surface of the rear end of the limit block 203b-2 is against the groove, and the limit block 203b-2 is squeezed and lifted up to separate from the groove, so that the clamping column 201 can be separated from the VR plug, and the entire manipulator can be taken out.

[0054] When removing the VR plug installed at the bypass thread of the casing head or the tubing head, it is only necessary to insert the long rod 100 and the clamping column 201 into the bypass thread of the casing head or the tubing head, and insert the VR plug into the hexagonal groove 202, and at the same time insert the limit block 203b-2 into the clamping groove, then turn the handle 101 to loosen the VR plug, and finally pull out the rod body 203b-1 and the VR plug to complete the disassembly and removal of the VR plug.

[0055] Example 2, reference Figure 3 and Figure 4 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: an auxiliary unit 300 is provided between the long rod 100 and the clamping column 201;

[0056] The auxiliary unit 300 includes a limiting shaft 301 arranged at the end of the long rod 100, a limiting groove 302 arranged on the limiting shaft 301, a connecting shaft 303 slidably arranged in the limiting groove 302, and a spring 304 arranged between the connecting shaft 303 and the long rod 100; the end of the connecting shaft 303 is connected to the clamping column 201, wherein the connecting shaft 303 is provided with a sliding column inserted in the limiting groove 302 at the temporal part, and the connecting shaft 303 is slidably connected to the limiting groove 302 through the sliding column, and preferably the limiting groove 302 and the sliding column are set to three.

[0057] Furthermore, the limiting groove 302 includes a long groove 302a and a spiral groove 302b arranged on the limiting shaft 301; the long groove 302a is connected to the spiral groove 302b, and the rotation angle of the spiral groove 302b is 60° to 90°, preferably 70°, wherein the spring 2 304 is rotationally connected to at least one of the long rod 100 and the connecting shaft 303.

[0058] In the initial state, the connecting shaft 303 is located at the end of the long groove 302a under the elastic force of the second spring 304; at this time, the long rod 100 and the limiting shaft 301 can be driven to rotate by rotating the handle 101, thereby driving the connecting shaft 303 and the clamping column 201 to rotate; and when the end of the connecting shaft 303 is squeezed, the connecting shaft 303 first moves along the long groove 302a, and when it moves to the spiral groove 302b, it slides along the spiral groove 302b and rotates at the same time.

[0059] The use process is as follows: when removing the VR plug installed at the bypass thread of the casing head or the tubing head, it is only necessary to insert the long rod 100 and the clamping column 201 into the bypass thread of the casing head or the tubing head, and insert the VR plug into the opening of the hexagonal groove 202. At this time, by pressing the handle 101, the connecting shaft 303 can slide along the limiting groove 302. When the connecting shaft 303 slides to the spiral groove 302b, it will rotate. When the connecting shaft 303 rotates, it will drive the clamping column 20 1, at this time, the hexagonal slot 202 can be adjusted so that the hexagonal slot 202 can rotate relative to the VR plug. When the hexagonal slot 202 completely overlaps with the bottom of the VR plug, the hexagonal slot 202 will be directly plugged into the VR plug to achieve automatic adjustment and plugging of the clamping column 201. Then, the squeezing of the handle 101 is released, and the connecting shaft 303 returns to the straight groove under the elastic force of the spring 2 304. At this time, the clamping column 201 can be driven to rotate by rotating the handle 101 to disassemble the VR plug.

[0060] The VR plug can be automatically adjusted in the pipeline, avoiding manual rotation of the long rod 100 to blindly align the hexagonal groove 202 with the VR plug, thus saving alignment time.

[0061] The remaining structures are the same as those of Example 1.

[0062] Example 3, reference Figure 5-Figure 7 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: a receiving groove 102 is provided at the end of the long rod 100; the second spring 304 and the end of the limiting shaft 301 are both connected to the bottom of the receiving groove 102; wherein the second spring 304 is rotationally connected to at least one of the receiving groove 102 and the connecting shaft 303.

[0063] The connecting shaft 303 is slidably inserted in the receiving groove 102 , and the outer side of the connecting shaft 303 is sealed with the inner wall of the receiving groove 102 ; the outer side of the connecting shaft 303 and the inner wall of the receiving groove 102 are sealed by a sealing ring, and the sealing ring is embedded in the inner wall of the receiving groove 102 .

[0064] The auxiliary unit 300 further includes a positioning assembly 305 disposed on the connecting shaft 303; the positioning assembly 305 includes at least one connecting groove 1 305a disposed on the connecting shaft 303, a plurality of sliding grooves 1 305b disposed in the connecting shaft 303, and a positioning portion 305c slidably disposed in the sliding groove 1 305b;

[0065] The bottoms of the plurality of slide grooves 305b are connected to each other; the two ends of the connecting groove 305a are connected to the slide groove 305b and the accommodating groove 102 respectively.

[0066] Furthermore, the positioning portion 305c includes at least one sleeve 305c-1 slidably arranged in the slide groove 1 305b, a spring 305c-2 is arranged inside the innermost sleeve 305c-1, an arc cover 305c-3 is arranged at the end of the spring 305c-2, and a ball valve 305c-4 is rollingly arranged between the arc cover 305c-3 and the end of the sleeve 305c-1; a pressure relief port 305c-5 is arranged on the innermost sleeve 305c-1; the ball valve 305c-4 and the pressure relief port 305c-5 are sealed, and the ball valve 305c-4 is against the pressure relief port 305c-5 under the elastic force of the spring 305c-2, and a sealing ring is embedded in the pressure relief port 305c-5, so that the pressure relief port 305c-5 and the ball valve 305c-4 are sealed.

[0067] When the sleeve 305c-1 is set to one, this sleeve 305c-1 is slidably set in the slide groove 305b and is sealed with the slide groove 305b. A sealing ring is embedded on the outside of the sleeve 305c-1, and it is sealed with the slide groove 305b through the sealing ring. At the same time, the sleeve 305c-1 is set to a T shape, and two retaining rings are provided inside the slide groove 305b to limit the sleeve 305c-1. At the same time, this sleeve 305c-1 is the innermost sleeve 305c-1.

[0068] When there are multiple sleeves 305c-1, the multiple sleeves 305c-1 are reduced in proportion and marked with numbers 1 to n. The outermost sleeve 305c-1 is numbered 1 and is slidably disposed in the slide groove 1 305b and sealed with the slide groove 1 305b. A sealing ring is embedded on the outside of the sleeve 305c-1 and is sealed with the slide groove 1 305b through the sealing ring. At the same time, the sleeve 305c-1 is set in a T shape, and two clamping rings are provided inside the slide groove 1 305b to limit the sleeve 305c-1. The sleeve 305c-1 numbered n is slidably inserted into the sleeve 305c-1 numbered n-1, and the sleeve 305c-1 numbered n-1 is provided with two limit rings inside for limiting the sleeve 305c-1 inserted therein. The two sleeves 305c-1 form a group, and the inner sleeve 305c-1 is embedded with a sealing ring outside to seal with the outer sleeve 305c-1; at this time, the sleeve 305c-1 numbered n is the innermost sleeve 305c-1.

[0069] The provision of multiple sleeves 305c-1 can increase the final extended length of the sleeve 305c-1.

[0070] The use process is as follows: when removing the VR plug installed at the bypass thread of the casing head or the tubing head, it is only necessary to insert the long rod 100 and the clamping column 201 into the bypass thread of the casing head or the tubing head, and make the VR plug contact with the end of the clamping column 201. At this time, by pressing the handle 101, the connecting shaft 303 can slide along the limiting groove 302. When the connecting shaft 303 slides along the long groove 302a, the connecting shaft 303 and the containing groove 102 slide relative to each other. The gas inside the connecting shaft 303 and the containing groove 102 will enter the sliding groove 305b from the connecting groove 1 305a and push the casing 305c-1 out. When multiple innermost casings 305c-1 are extended, the ball valve 305c-4 will abut against the inner wall of the pipeline, and the clamping column 201 will be limited to the axis of the pipeline, so that the end of the VR plug is coaxial with the clamping column 201, which is convenient for docking.

[0071] After the ball valve 305c-4 abuts against the inner wall of the pipe, continue to press the handle 101 to move the connecting shaft 303 relative to the accommodating groove 102. At this time, the air pressure inside the connecting shaft 303 and the accommodating groove 102 increases, separating the ball valve 305c-4 from the pressure relief port 305c-5 to achieve pressure relief, so that the connecting shaft 303 can slide smoothly. When the connecting shaft 303 slides to the spiral groove 302b, it can drive the clamping column 201 to rotate, so that the hexagonal groove 202 and the VR plugging end are rotated and overlapped, until the hexagonal groove 202 and the VR plugging end are rotated and overlapped. The angle groove 202 is inserted into the VR plug, and finally the pressure on the handle 101 is released. The connecting shaft 303 pops out under the elastic force of the spring 2 304 to increase the internal space between the connecting shaft 303 and the accommodating groove 102. Under the pressure difference between the outside air and the inside of the accommodating groove 102, the outside air will squeeze the ball valve 305c-4 and the pressure relief port 305c-5 to separate and smoothly enter the accommodating groove 102, so that the connecting shaft 303 slides into the straight groove. At this time, the VR plug can be disassembled by rotating the handle 101 to drive the clamping column 201 to rotate.

[0072] The remaining structure is the same as that of Example 2.

[0073] Example 4, reference Figure 6 , which is the fourth embodiment of the present invention. This embodiment is different from the third embodiment in that: the positioning component 305 also includes at least one connecting groove 305d arranged on the long rod 100, a plurality of sliding grooves 305e arranged in the long rod 100, and at least one sleeve 305f slidably arranged in the sliding groove 305e; the two ends of the connecting groove 305d are respectively connected to the sliding groove 305e and the accommodating groove 102.

[0074] When there are multiple sleeves 305f, the multiple sleeves 305f are reduced in proportion and marked with numbers 1 to n. The outermost sleeve 305f is numbered 1 and is slidably disposed in the second slide groove 305e and sealed with the second slide groove 305e. A sealing ring is embedded on the outside of the sleeve 305f and is sealed with the second slide groove 305e through the sealing ring. At the same time, the sleeve 305f is set in a T shape, and two clamping rings are provided inside the second slide groove 305e to limit the sleeve 305f. The sleeve 305f numbered n is slidably inserted into the sleeve 305f numbered n-1, and the sleeve 305f numbered n-1 is provided with two limiting clamps inside for limiting the sleeve 305f inserted therein. The two sleeves 305f form a group, and the outer sleeve 305f is inlaid with a sealing ring on the outside to seal with the outer sleeve 305f. At the same time, the end of the inner sleeve 305f slides through the top of the outer sleeve 305f.

[0075] During operation, when the connecting shaft 303 slides along the long groove 302a, the connecting shaft 303 and the accommodating groove 102 slide relative to each other, and the gas inside the connecting shaft 303 and the accommodating groove 102 will enter the slide groove 1 305b and the slide groove 2 305e from the connecting groove 1 305a and the connecting groove 2 305d respectively, and push the sleeve 305c-1 and the sleeve 305f out. The cooperation between the sleeve 305c-1 and the sleeve 305f can better limit the clamping column 201 at the axis center of the pipeline, so that the VR plugging end is coaxial with the clamping column 201, which is convenient for docking.

[0076] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A VR plug installation manipulator for casing head and tubing head, characterized in that: include, a long rod (100); and, A clamping unit (200), the clamping unit (200) comprising a clamping column (201) arranged at the end of the long rod (100), a hexagonal groove (202) arranged at the end of the clamping column (201), and a limiting assembly (203) arranged at the end of the clamping column (201); The limiting assembly (203) comprises a mounting groove (203a) arranged in the clamping column (201), a clamping claw (203b) hingedly arranged in the mounting groove (203a), and a spring 1 (203c) arranged between the clamping claw (203b) and the mounting groove (203a); One end of the clamping claw (203b) is inserted into the hexagonal groove (202); The clamping claw (203b) comprises a rod body (203b-1) connected to the spring 1 (203c), and a limit block (203b-2) arranged at the end of the rod body (203b-1); The limit block (203b-2) and the spring 1 (203c) are respectively located at two ends of the rod body (203b-1); The middle portion of the rod body (203b-1) is hinge-connected to the mounting groove (203a); The front end and the rear end of the bottom of the limiting block (203b-2) are both configured as inclined surfaces; An auxiliary unit (300) is provided between the long rod (100) and the clamping column (201); The auxiliary unit (300) comprises a limiting shaft (301) arranged at the end of the long rod (100), a limiting groove (302) arranged on the limiting shaft (301), a connecting shaft (303) slidably arranged in the limiting groove (302), and a second spring (304) arranged between the connecting shaft (303) and the long rod (100); The end of the connecting shaft (303) is connected to the clamping column (201); The end of the long rod (100) is provided with a receiving groove (102); The second spring (304) and the end of the limiting shaft (301) are both connected to the bottom of the accommodating groove (102); The connecting shaft (303) is slidably inserted into the accommodating groove (102), and the outer side of the connecting shaft (303) is sealed with the inner wall of the accommodating groove (102); The auxiliary unit (300) further comprises a positioning assembly (305) arranged on the connecting shaft (303); The positioning assembly (305) comprises at least one connecting groove (305a) arranged on the connecting shaft (303), a plurality of sliding grooves (305b) arranged in the connecting shaft (303), and a positioning portion (305c) slidably arranged in the sliding groove (305b); The bottoms of the plurality of slide grooves 1 (305b) are connected to each other; Two ends of the connecting groove 1 (305a) are respectively in communication with the sliding groove 1 (305b) and the containing groove (102); The positioning portion (305c) comprises at least one sleeve (305c-1) slidably disposed in the slide groove (305b), a spring (305c-2) being disposed inside the innermost sleeve (305c-1), an arc-shaped cover (305c-3) disposed at the end of the spring (305c-2), and a ball valve (305c-4) rollingly disposed between the arc-shaped cover (305c-3) and the end of the sleeve (305c-1); The innermost sleeve (305c-1) is provided with a pressure relief port (305c-5); A sealing arrangement is provided between the ball valve (305c-4) and the pressure relief port (305c-5); The positioning assembly (305) further comprises at least one second connecting groove (305d) arranged on the long rod (100), a plurality of second sliding grooves (305e) arranged in the long rod (100), and at least one sleeve (305f) slidably arranged in the second sliding groove (305e); Both ends of the second connecting groove (305d) are respectively connected to the second sliding groove (305e) and the accommodating groove (102).

2. The VR plug installation manipulator for casing head and tubing head according to claim 1 is characterized in that: A handle (101) is provided at the end of the long rod (100).

3. The VR plug installation manipulator for casing head and tubing head according to claim 1 is characterized in that: The limiting groove (302) comprises a long groove (302a) and a spiral groove (302b) arranged on the limiting shaft (301); The long groove (302a) is connected to the spiral groove (302b).

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