A workover rig swivel kelly assembly hanger
By designing a suspension device for the swivel drill pipe assembly of the workover rig, the automated suspension and position switching of the swivel drill pipe were realized, solving the problems of manual pushing and space occupation, and improving drilling operation efficiency.
Patent Information
- Application Number
- CN202522459869.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-20
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-11-20
AI Technical Summary
In current drilling operations, the placement of the swivel drill pipe assembly requires manual pushing, which occupies table space and necessitates digging rat holes, resulting in high labor intensity and low efficiency.
Design a suspension device for the square drill pipe assembly of a workover rig swivel, which uses a clamping head assembly, a bearing arm, a rotating seat and a hydraulic cylinder to achieve automated clamping, locking and position switching, and fix it on the derrick.
It reduces labor intensity, saves space, eliminates the need to dig rat burrows, and improves drilling efficiency.
Smart Images
Figure CN224943703U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of well workover equipment technology, specifically a suspension device for a swivel drill rod assembly of a well workover machine. Background Technology
[0002] The swivel drill pipe assembly is an essential piece of equipment in drilling operations. During drilling, the swivel drill pipe assembly needs to be frequently disassembled and placed in the rat hole on the drilling platform during drill pipe connection. This placement requires operators on the drilling platform to manually push and guide the swivel drill pipe assembly into the rat hole, resulting in extreme labor intensity. Furthermore, the swivel drill pipe assembly occupies a significant amount of platform space, affecting the placement and use of other equipment on the drilling platform. Additionally, because the height of the rat hole for placing the swivel drill pipe assembly is much higher than the height of the drilling platform, a rat hole pit must be dug in the ground before the drilling platform is in place, a time-consuming and labor-intensive process. Therefore, there is a need for a method that eliminates the need for manual pushing, saves platform space, eliminates the need for digging rat holes, and allows for efficient use of the swivel drill pipe assembly. Utility Model Content
[0003] To address the aforementioned problems, this utility model provides a suspension device for the square drill rod assembly of a workover rig swivel, which solves the problem that existing operations require manual intervention and are time-consuming and labor-intensive.
[0004] The technical solution adopted by this utility model to solve its technical problem is: a suspension device for a swivel faucet and square drill rod assembly of a well workover rig, used to fix the swivel faucet and square drill rod on the rig frame, comprising: A clamping head assembly for clamping a faucet and a square drill rod, the clamping head assembly including a rotating clamping end and a fixed clamping end that cooperate with each other, an opening and closing device for driving the rotating clamping end to rotate about one end of the fixed clamping end as a rotation axis to realize opening and closing, and a locking device for driving the rotating clamping end to lock the other end of the fixed clamping end. A support arm, one end of which is connected to the clamping head assembly, is used to support the weight of the faucet and the square drill rod; A rotating seat, connected to the derrick, is hinged to the other end of the bearing arm and is used to adjust the position of the clamping head assembly; A rotary hydraulic cylinder, one end of which is fixed to the derrick, and the other end of which is hinged to the end of the bearing arm near the rotating seat, is used to cooperate with the rotating seat to drive the rotating seat to rotate the bearing arm.
[0005] As an optimization, the opening and closing device includes a closing cylinder, a connecting plate fixed and hinged to the closing cylinder, and the output end of the closing cylinder is hinged to the rotating clamping end.
[0006] As an optimization, a rotating shaft III is provided between the connecting plate and the closing cylinder, and a rotating shaft II is provided between the output end of the closing cylinder and the rotating clamping end.
[0007] As an optimization, the locking device sequentially includes a locking cylinder, a fixing plate for fixing the locking cylinder, a follower block connected to the output end of the locking cylinder, a follower block guide block for guiding and limiting the follower block, connecting rods respectively connected to the upper and lower ends of the follower block, a locking pin connected to the two connecting rods, and locking pin guide tubes respectively provided at the upper and lower ends of the rotary clamping end to cooperate with the locking pin. The upper and lower ends of the rotary clamping end are provided with guide holes for moving the locking pin.
[0008] As an optimization, the rotating seat includes a rotating barrel and a rotating shaft disposed within the rotating barrel. From top to bottom, the rotating barrel and the rotating shaft are provided with an axial thrust bearing, a rotating bearing, a bushing, and a rotating bearing located at the lower end of the rotating barrel. The upper end of the rotating barrel is provided with an upper end cover, and the lower end is provided with a lower end cover. The upper end and the lower end of the rotating shaft extend to the outside of the upper end cover and the lower end cover, respectively. An oil pipe is also provided inside the rotating shaft, and an upper connecting seat and a lower connecting seat are provided at the top and bottom ends of the rotating shaft, respectively. The upper connecting seat is provided with an upper top cover and an oil cup communicating with the oil pipe, and the lower connecting seat is provided with a lower top cover.
[0009] As an optimization, both the upper connecting seat and the lower connecting seat include a top plate disposed on the rotating shaft and a side plate disposed perpendicular to the top plate and connected to the derrick.
[0010] As an optimization, a connecting seat is provided between the rotary cylinder and the derrick, which is hinged to the rotary cylinder, and the connecting seat is connected to the derrick by connecting bolt I.
[0011] The beneficial effects of this utility model are: 1. Compared with the prior art, the suspension device for the square drill rod assembly of the swivel tap of this utility model patent does not require manual pushing of the swivel tap square drill rod assembly. The clamping, secondary locking after clamping, and switching between working positions of the square drill rod swivel assembly are all realized by hydraulic cylinders. The operator only needs to operate the hydraulic cylinder control handle, which has a high degree of automation and significantly reduces labor intensity. 2. Compared with the prior art, the swivel faucet square drill rod assembly suspension device of this utility model patent does not occupy the drilling platform space. The square drill rod swivel assembly can be suspended on the derrick using this device, without occupying drilling platform space, making it particularly suitable for drilling platforms with limited space and numerous equipment. 3. Compared with existing technologies, the swivel faucet square drill rod assembly suspension device of this utility model patent does not require digging rat hole pits. The square drill rod swivel assembly is suspended on the derrick, and the lowest end of the square drill rod is far away from the drill platform surface. Therefore, it is not necessary to dig rat hole pits like conventional well workover rigs, saving the time-consuming and labor-intensive digging process, significantly reducing labor intensity and improving operation efficiency. Attached Figure Description
[0012] Figure 1 Working state diagram of this utility model: Among them: Ⅰ-Swivel faucet square drill pipe assembly suspension device, Ⅱ-Derrick, Ⅲ-Swivel faucet, Ⅳ-Square drill pipe Figure 2 Schematic diagram of the structure of this utility model: Wherein: 1-clamping head assembly, 2-bearing arm, 3-connecting pin I, 4-rotating seat, 5-rotating cylinder, 6-connecting seat, 7-connecting pin II, 8-connecting bolt I, 9-connecting bolt II Figure 3 Schematic diagram of the clamping head structure of this utility model: Wherein: 101-Rotary clamping end, 102-Rotary shaft I, 103-Fixed clamping end, 104-Closing cylinder, 105-Closing cylinder fixing bolt, 106-Rotary shaft II, 107-Locking cylinder, 108-Locking cylinder fixing bolt, 109-Follower block, 110-Connecting bolt, 111-Connecting pin, 112-Connecting rod, 113-Locking pin, 114-Locking pin guide tube, 115-Follower block guide block, 116-Rotary shaft III Figure 4 The flowchart of the locking and unlocking process of the clamping head of this utility model is as follows: Wherein: 101-rotary clamping end, 102-rotary shaft I, 103-fixed clamping end, 104-closing cylinder, 105-closing cylinder fixing bolt, 106-rotary shaft II, 116-rotary shaft II Figure 5 The flowchart of the secondary locking and unlocking process of the clamping head of this utility model is as follows: Wherein: 109-follower block, 110-connecting bolt, 111-connecting pin, 112-connecting rod, 113-locking pin, 114-locking pin guide tube, 115-follower block guide block, 116-rotating shaft II Figure 6 Schematic diagram of the rotating base structure of this utility model: Among them: 401-Upper connecting seat, 402-Upper top cover connecting bolt, 403-Oil cup, 404-Upper top cover, 405-Rotating barrel upper fixing bolt, 406-Upper end cover, 407-Axial thrust bearing, 408-Rotating barrel, 409-Rotating bearing, 410-Shaft sleeve, 411-Rotating shaft, 412-Lower end cover, 413-Lower top cover, 414-Lower top cover connecting bolt, 415-Rotating barrel lower fixing bolt, 416-Lower connecting seat Figure 7 Flowchart of the working position switching of the square drill rod faucet of this utility model: Wherein: 1-clamping head, 2-bearing arm, 3-connecting pin I, 4-rotating seat, 5-rotating cylinder, 6-connecting seat, 7-connecting pin II, 8-connecting bolt I, 9-connecting bolt II Figure 8 An enlarged structural schematic diagram of the locking device of this utility model; Figure 9 Enlarged cross-sectional view of the rotating base of this utility model. Detailed Implementation
[0013] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.
[0014] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0015] For ease of description, the words "up," "down," "left," and "right" appearing in this utility model only indicate that they are consistent with the up, down, left, and right directions of the accompanying drawings themselves, and do not limit the structure. They are merely for the purpose of facilitating the description of this invention and simplifying the description, and do not indicate or imply that the device or component 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.
[0016] A suspension device for a swivel drill pipe assembly of a workover rig, used to fix a swivel (III) and a radiator (IV) to a derrick (II), includes: a clamping head assembly 1 for clamping the swivel (III) and the radiator (IV), the clamping head assembly 1 including a rotating clamping end 101 and a fixed clamping end that cooperate with each other, an opening and closing device for driving the rotating clamping end 101 to rotate about one end of the fixed clamping end as a rotation axis 411 to realize opening and closing, and a locking device for driving the rotating clamping end 101 to lock with the other end of the fixed clamping end. The device comprises: a support arm 2, one end of which is connected to the clamping head assembly 1 to support the weight of the swivel faucet III and the square drill pipe IV; a rotating seat 4, which is connected to the derrick II and hinged to the other end of the support arm 2 to adjust the position of the clamping head assembly 1; and a rotating cylinder 5, one end of which is fixed to the derrick II and the other end of which is hinged to the end of the support arm 2 near the rotating seat 4 to cooperate with the rotating seat 4 and drive the rotating seat 4 to rotate the support arm 2.
[0017] The opening and closing device includes a closing cylinder 104, a connecting plate fixed and hinged to the closing cylinder 104, the output end of the closing cylinder 104 being hinged to the rotating clamping end 101, a rotating shaft III 116 being provided between the connecting plate and the closing cylinder 104, and a rotating shaft II 106 being provided between the output end of the closing cylinder 104 and the rotating clamping end 101.
[0018] The locking device includes, in sequence, a locking cylinder 107, a fixing plate for fixing the locking cylinder 107, a follower block 109 connected to the output end of the locking cylinder 107, a follower block guide block 115 for guiding and limiting the follower block 109, connecting rods 112 connected to the upper and lower ends of the follower block 109, a locking pin 113 connected to the two connecting rods 112, and locking pin guide tubes 114 provided at the upper and lower ends of the rotary clamping end 101 for cooperating with the locking pin 113. The upper and lower ends of the rotary clamping end 101 are provided with guide holes for moving the locking pin 113.
[0019] The rotating base 4 includes a rotating barrel 408 and a rotating shaft 411 disposed within the rotating barrel 408. From top to bottom, the rotating barrel 408 and the rotating shaft 411 are provided with an axial thrust bearing 407, a rotating bearing 409, a bushing 410, and a rotating bearing 409 located at the lower end of the rotating barrel 408. The upper end of the rotating barrel 408 is provided with an upper end cover 406, and the lower end is provided with a lower end cover 412. The upper and lower ends of the rotating shaft 411 extend to the upper end cover 406 and the lower end cover, respectively. Outside of 412, an oil pipe is also provided inside the rotating shaft 411, and an upper connecting seat 401 and a lower connecting seat 416 are respectively provided at the top and bottom of the rotating shaft 411. The upper connecting seat 401 is provided with an upper top cover 404 and an oil cup 403 communicating with the oil pipe. The lower connecting seat 416 is provided with a lower top cover 413. Both the upper connecting seat 401 and the lower connecting seat 416 include a top plate provided on the rotating shaft 411 and a side plate that is perpendicular to the top plate and connected to the derrick II.
[0020] A connecting seat 6 is provided between the rotary cylinder 5 and the derrick II, and the connecting seat 6 is hinged to the derrick II by connecting bolt I 8.
[0021] like Figure 1 The diagram shown illustrates the working state of this utility model patent. It consists of a swivel drill pipe assembly suspension device I, a derrick II, a swivel III, and a square drill pipe IV. In this state, the swivel III and the square drill pipe IV are suspended from the derrick II via the swivel drill pipe assembly suspension device I, and are positioned at the center of the wellbore.
[0022] like Figure 2 The diagram shown is a schematic representation of the structure of this utility model patent. The faucet square drill rod assembly suspension device I consists of a clamping head assembly 1, a bearing arm 2, a connecting pin I 3, a rotating seat 4, a rotating cylinder 5, a connecting seat 6, a connecting pin II 7, a connecting bolt I 8, and a connecting bolt II 9. The clamping head assembly 1 is used to clamp... Figure 1 The water tap III and square drill pipe IV, and the clamping head assembly 1 can achieve the following: Figure 1 The clamping and unlocking of the water tap III and the square drill pipe IV, as well as the secondary locking and unlocking after clamping, this process is carried out in Figure 4 and Figure 5 The details are as follows: the bearing arm 2 is used to bear... Figure 1 The weight of the water tap III and the square drill rod IV are the main load-bearing components; the rotating seat 4 and the rotating cylinder 5 work together to achieve... Figure 1 The water tap III and square drill pipe IV can be easily switched between the wellbore center position, storage position, and unobstructed lifting position of the derrick, meeting the needs of on-site drilling operations. Figure 1 The operating conditions requiring the switching of the water tap III and square drill pipe IV between different working positions, this process is in... Figure 7The details are as follows: the connecting pin I3 is used to connect the rotary cylinder 5 and the bearing arm 2; the connecting seat 6 serves as a transition connection, used to transitionally connect the rotary cylinder 5 and... Figure 1 The middle derrick II; connecting pin II7 is used to connect the rotary cylinder 5 and the connecting seat 6; the connecting bolt I8 is used to connect the connecting seat 6 and Figure 1 Middle derrick II; the connecting bolt II9 is used to connect the rotating seat 4 and Figure 1 Middle derrick II. The entire swivel drill pipe assembly suspension device I has a compact structure and a reasonable layout.
[0023] like Figure 3 The diagram shows the structure of the clamping head of this utility model patent. The left view shows the clamping head assembly 1 in the unlocked state, and the right view shows the clamping head assembly 1 in the clamping state. The clamping head assembly 1 consists of a rotating clamping end 101, a rotating shaft I 102, a fixed clamping end 103, a closing cylinder 104, a closing cylinder fixing bolt 105, a rotating shaft II 106, a locking cylinder 107, a locking cylinder fixing bolt 108, a follower block 109, a connecting bolt 110, a connecting pin 111, a connecting rod 112, a locking pin 113, a locking pin guide tube 114, a follower block guide block 115, and a rotating shaft III 116. The rotating clamping end 101 and the fixed clamping end 103 are directly connected to... Figure 1 The water tap III and the square drill pipe IV make contact and bear the load. Figure 1 The weight of the water tap III and the square drill rod IV; the rotating clamping end 101, rotating shaft I 102, fixed clamping end 103, closing cylinder 104, closing cylinder fixing bolt 105, rotating shaft II 106, and rotating shaft III 116 work together to achieve clamping and unlocking. Figure 1 Water tap III and square drill pipe IV, this process in Figure 4 The details are as follows: the rotating clamping end 101 can rotate around the rotating axis I 102; the piston rod end of the closing cylinder 104 can rotate around the rotating axis II 106, and the cylinder body of the closing cylinder 104 can rotate around the rotating axis III 116; the closing cylinder fixing bolt 105 connects the closing cylinder 104 and the fixed clamping end 103 into one unit; the locking cylinder fixing bolt 108 connects the locking cylinder 107 and the rotating clamping end 101 together; the locking cylinder 107, the locking cylinder fixing bolt 108, the follower block 109, the follower block guide block 115, the connecting bolt 110, the connecting rod 112, the connecting pin 111, the locking pin 113, and the locking pin guide tube 114 work together to achieve the following: Figure 1 After the water tap III and the square drill pipe IV are clamped, the clamping head assembly 1 undergoes secondary locking and unlocking. This eliminates the possibility of operator error causing improper unlocking of the clamping head 1, which could lead to... Figure 1 The safety hazards of the falling water tap III and square drill pipe IV, and the secondary locking and unlocking process. Figure 5 This will be explained in detail in the text.
[0024] like Figure 4 The diagram illustrates the locking and unlocking process of the clamping head of this utility model patent. The left view shows the unlocked state of the clamping head assembly 1, and the right view shows the clamping state of the clamping head assembly 1. The locking and unlocking process of the clamping head is achieved by the coordinated operation of the rotating clamping end 101, the rotating shaft I 102, the fixed clamping end 103, the closing cylinder 104, the closing cylinder fixing bolt 105, the rotating shaft II 106, and the rotating shaft III 116. The locking and unlocking process of the clamping head is as follows: the piston rod of the closing cylinder 104 extends, causing the piston rod end of the closing cylinder 104 to rotate around the rotating shaft II 106, the cylinder body of the closing cylinder 104 to rotate around the rotating shaft III 116, and the rotating clamping end 101 to rotate around the rotating shaft I 102. The above three rotational linkages enable the rotating clamping end 101 to rotate and contact the fixed clamping end 103, thereby achieving the clamping of the clamping head assembly 1. Conversely, the piston rod of the closing cylinder 104 retracts, causing the piston rod end of the closing cylinder 104 to rotate around the rotating shaft II 106, the cylinder body of the closing cylinder 104 to rotate around the rotating shaft III 116, and the rotating clamping end 101 to rotate around the rotating shaft I 102. The above three rotational linkages enable the rotating clamping end 101 to rotate and disengage from the fixed clamping end 103, thereby unlocking the clamping head assembly 1.
[0025] like Figure 5 and Figure 8 The diagram illustrates the secondary locking and unlocking of the clamping head in this utility model patent. The top two views show the clamping head in the secondary unlocking state, and the bottom two views show the clamping head in the secondary locking state. The secondary locking and unlocking of the clamping head is achieved through the coordinated operation of the locking cylinder 107, the locking cylinder fixing bolt 108, the follower block 109, the follower block guide block 115, the connecting bolt 110, the connecting rod 112, the connecting pin 111, the locking pin 113, and the locking pin guide tube 114. The working process of the secondary locking and unlocking of the clamping head is as follows: When... Figure 4When the clamping head is in the clamping state, the piston rod of the locking cylinder 107 extends, driving the follower block 109 to move within the follower block guide block 115. The movement of the follower block 109 drives the connecting rod 112 to move, and the movement of the connecting rod 112 drives the locking pin 113 to move within the locking pin guide tube 114. The end of the locking pin 113 extends out of the upper end face of the rotating clamping end 101, thereby connecting the rotating clamping end 101 and the fixed clamping end 103 together. There are two locking pins 113 shown in the figure, which can simultaneously lock the rotating clamping end 101 and the fixed clamping end 103 on the upper and lower sides. Conversely, the piston rod of the locking cylinder 107 retracts, causing the follower block 109 to move within the follower block guide block 115. The movement of the follower block 109 causes the connecting rod 112 to move, which in turn causes the locking pin 113 to move within the locking pin guide tube 114. The end of the locking pin 113 retracts to the lower side of the upper end face of the rotating clamping end 101, thereby unlocking the rotating clamping end 101 and the fixed clamping end 103. The function of the secondary locking and unlocking of the clamping head is: when Figure 4 When the clamping head is in the clamping state, if the clamping head is in the secondary locking state, Figure 4 The unlocking process for the clamp head will not be possible. If unlocking is required... Figure 4 The clamping head needs to be placed in the secondary unlocked state first. This fundamentally eliminates the possibility of operator error causing improper unlocking of the clamping head assembly 1, thus preventing damage. Figure 1 Safety hazards from the falling of the water tap III and square drill pipe IV.
[0026] like Figure 6 and Figure 9 The diagram shown is a schematic of the rotating seat structure of this utility model patent. It mainly consists of an upper connecting seat 401, an upper top cover connecting bolt 402, an oil cup 403, an upper top cover 404, a rotating barrel upper fixing bolt 405, an upper end cover 406, an axial thrust bearing 407, a rotating barrel 408, a rotating bearing 409, a bushing 410, a rotating shaft 411, a lower end cover 412, a lower top cover 413, a lower top cover connecting bolt 414, a rotating barrel lower fixing bolt 415, and a lower connecting seat 416. The upper connecting seat 401 and the lower connecting seat 416 are connected by... Figure 2 Middle connecting bolt II9 and Figure 1 The middle derrick II is connected; the rotating drum upper fixing bolt 405, upper end cover 406, rotating drum 408, lower end cover 412, and rotating drum lower fixing bolt 415 form a rotating end of the rotating seat as a whole; the upper connecting seat 401, upper top cover connecting bolt 402, upper top cover 404, rotating shaft 411, lower top cover 413, lower top cover connecting bolt 414, and lower connecting seat 416 form a fixed end of the rotating seat as a whole; the axial thrust bearing 407 and the rotary bearing 409 connect the rotating end and the fixed end of the rotating seat together. The rotating end of the rotating seat rotates around the fixed end of the rotating seat through the axial thrust bearing 407 and the rotary bearing 409.
[0027] like Figure 7 The diagram shows the workflow for switching the working position of the swivel tap on the square drill pipe, a patented invention. The views, from top to bottom, depict the swivel tap square drill pipe assembly in the wellbore center position, the storage position, and the unobstructed lifting position on the derrick. The workflow for switching the working position of the square drill pipe swivel tap is as follows: Figure 7 In the top side view, the piston rod of the rotary cylinder 5 is fully extended, and the swivel drill pipe assembly is centered in the wellbore; as shown... Figure 7 In the center view, the piston rod of the rotary cylinder 5 retracts, causing the clamping head assembly 1 and the bearing arm 2 to rotate around the rotating seat 4, and the swivel drill pipe assembly is in the storage position; during drilling, the swivel drill pipe assembly only needs to switch its working position back and forth between the wellbore center position and the storage position. Figure 1 When the derrick II is in the lifting and lowering position, the swivel suspension device of the square drill pipe needs to be adjusted to... Figure 7 In the bottom side view of the derrick's unobstructed lifting position, the piston rod of the rotating cylinder 5 is fully retracted, causing the clamping head assembly 1 and the bearing arm 2 to rotate further around the rotating seat 4, and the square drill pipe swivel suspension device is in the unobstructed lifting position of the derrick.
[0028] The steps of the suspension device for holding the swivel drill rod assembly of this utility model patent are as follows: 1. Adjust the suspension device to the storage position and place the clamping head in the unlocked state; 2. Adjust the suspension device to the center position of the wellbore and place the swivel drill rod inside the clamping head; 3. Lock the clamping head; 4. Lock the clamping head again; 5. Open the hook of the traveling block hook and disengage the swivel lifting ring from the hook; 6. Adjust the suspension device with the swivel drill rod assembly to the storage position.
[0029] The steps to remove the swivel drill pipe assembly from the suspension device are as follows: 1. Place the suspension device with the swivel drill pipe assembly in the storage position; 2. Adjust the suspension device to the center position of the wellbore; 3. Open the hook of the traveling block hook, put the swivel lifting ring into the hook, close the hook, and the traveling block hook will raise the swivel drill pipe assembly a certain height; 4. Unlock the chuck head a second time; 5. Unlock the chuck head; 6. Adjust the suspension device to the storage position.
[0030] The above-described specific embodiments are merely specific examples of this utility model. The patent protection scope of this utility model includes, but is not limited to, the product form and style of the above-described specific embodiments. Any appropriate changes or modifications made by a person skilled in the art that conform to the claims of this utility model should fall within the patent protection scope of this utility model.
Claims
1. A suspension device for a swivel faucet and square drill rod assembly of a well workover rig, used to fix the swivel faucet and square drill rod to the rig frame, characterized in that, include: A clamping head assembly for clamping a faucet and a square drill rod, the clamping head assembly including a rotating clamping end and a fixed clamping end that cooperate with each other, an opening and closing device for driving the rotating clamping end to rotate about one end of the fixed clamping end as a rotation axis to realize opening and closing, and a locking device for driving the rotating clamping end to lock the other end of the fixed clamping end. A support arm, one end of which is connected to the clamping head assembly, is used to support the weight of the faucet and the square drill rod; A rotating seat, connected to the derrick, is hinged to the other end of the bearing arm and is used to adjust the position of the clamping head assembly; A rotary hydraulic cylinder, one end of which is fixed to the derrick, and the other end of which is hinged to the end of the bearing arm near the rotating seat, is used to cooperate with the rotating seat to drive the rotating seat to rotate the bearing arm.
2. The suspension device for the swivel drill pipe assembly of the workover rig according to claim 1, characterized in that, The opening and closing device includes a closing cylinder, a connecting plate fixed and hinged to the closing cylinder, and the output end of the closing cylinder is hinged to the rotating clamping end.
3. The suspension device for the swivel drill pipe assembly of the workover rig according to claim 2, characterized in that, A rotating shaft III is provided between the connecting plate and the closing cylinder, and a rotating shaft II is provided between the output end of the closing cylinder and the rotating clamping end.
4. The suspension device for the swivel drill pipe assembly of the workover rig according to claim 1, characterized in that, The locking device includes, in sequence, a locking cylinder, a fixing plate for fixing the locking cylinder, a follower block connected to the output end of the locking cylinder, a follower block guide block for guiding and limiting the follower block, connecting rods connected to the upper and lower ends of the follower block, a locking pin connected to the two connecting rods, and locking pin guide tubes that cooperate with the locking pins and are respectively provided at the upper and lower ends of the rotary clamping end. The upper and lower ends of the rotary clamping end are provided with guide holes for moving the locking pins.
5. The suspension device for the swivel drill pipe assembly of the workover rig according to claim 1, characterized in that, The rotating base includes a rotating barrel and a rotating shaft disposed within the rotating barrel. From top to bottom, the rotating barrel and the rotating shaft are provided with an axial thrust bearing, a rotating bearing, a bushing, and a rotating bearing located at the lower end of the rotating barrel. The upper end of the rotating barrel is provided with an upper end cover, and the lower end is provided with a lower end cover. The upper end and the lower end of the rotating shaft extend to the outside of the upper end cover and the lower end cover, respectively. An oil pipe is also provided inside the rotating shaft. The top end and the bottom end of the rotating shaft are provided with an upper connecting seat and a lower connecting seat, respectively. The upper connecting seat is provided with an upper top cover and an oil cup communicating with the oil pipe, and the lower connecting seat is provided with a lower top cover.
6. The suspension device for the swivel drill pipe assembly of the workover rig according to claim 5, characterized in that, Both the upper connecting seat and the lower connecting seat include a top plate disposed on the rotating shaft and a side plate disposed perpendicular to the top plate and connected to the derrick.
7. The suspension device for the swivel drill pipe assembly of the workover rig according to claim 1, characterized in that, A connecting seat is provided between the rotary cylinder and the derrick, and the connecting seat is connected to the derrick by connecting bolt I.