Sucker rod clamp

Abstract

A sucker rod clamp, comprising a mounting plate (1), a bearing frame (2), a shoulder baffle (3), a collar shifting plate (4), a first rotating shaft (5), a second rotating shaft (6), a first constraint rod (7) and a second constraint rod (8), wherein the first rotating shaft, which is horizontally arranged in a front-rear direction, is rotationally mounted at the top of the mounting plate; the bearing frame used for bearing a collar is provided on the first rotating shaft; a first elastic reset member (9) is provided between the bearing frame and the mounting plate; the shoulder baffle is connected to the bearing frame; an open slot (10) used for accommodating a wrench clamping section (21) is provided on the shoulder baffle, the opening width of the open slot being smaller than the outer diameter of a shoulder; and the bearing frame can be pressed down by a sucker rod clockwise along with the downward toppling of the sucker rod when the bearing frame bears the sucker rod. The sucker rod clamp has a reasonable structure, and can clamp the sucker rod during a sucker rod lifting operation, so as to pull the sucker rod to make same move together, such that it is not necessary to pull the sucker rod to make same level manually, thereby reducing the operation labor intensity of operators, and improving the operation efficiency.

Description

Sucker rod clamp TECHNICAL FIELD

[0001] The present application relates to the technical field of oilfield workover operation, and is a kind of sucker rod clamp. BACKGROUND

[0002] Catwalk machine is used to complete the pipe rod lifting operation during workover operation. The existing catwalk machine generally comprises a slide, a sliding trolley arranged on the slide, and a receiving seat arranged on the trolley. The receiving seat is in the form of a supporting frame. When lifting the sucker rod, the upper end of the sucker rod is lifted by a lifting clamp, the lower end of the sucker rod is placed on the receiving seat, and the receiving seat is lowered along the slide with the sliding trolley. The lifting clamp continuously lowers the sucker rod until the sucker rod is tilted to the catwalk machine. Then the lifting clamp is released from the sucker rod. During the whole process, the receiving seat is only used to support the lower end of the sucker rod. The receiving seat cannot hold the sucker rod to move together with the sucker rod. Therefore, when the catwalk machine is far away from the wellhead, the sucker rod cannot pull the lifting clamp away from the wellhead by its own weight when the sucker rod is tilted to a small inclination angle. At this time, manual operation is needed to pull the sucker rod to make the lifting clamp deviate from the wellhead, so that the sucker rod can continue to be tilted to the catwalk machine. This increases the labor intensity of the operation personnel during pipe lifting operation.

[0003] A kind of workover operation pipe rod intelligent telescopic conveying device is disclosed in Chinese patent document with application No. CN202110834758.5. The conveying device comprises a catwalk frame, a telescopic component, a driving component, a jacking component and a fixed hinge seat. The telescopic component is arranged on the catwalk frame. One end of the catwalk frame is arranged on the fixed hinge seat. The jacking component is arranged below the middle part of the catwalk frame. The driving component is arranged on the catwalk frame, close to one side of the fixed hinge seat. The telescopic component is connected with the driving component. The telescopic component comprises a telescopic support, a first trolley sprocket, a second trolley sprocket, a closed trolley chain wound around the first trolley sprocket and the second trolley sprocket, a conveying trolley and a trolley driving component for driving the second trolley sprocket. The telescopic support is arranged on the catwalk frame and can move transversely along the catwalk frame. The first trolley sprocket and the second trolley sprocket are arranged at the front and rear ends of the telescopic support respectively. The conveying trolley is arranged on the trolley chain. In the device, the conveying trolley for receiving the lower end of the sucker rod is in the form of a tray. The sucker rod is tilted and laid flat by its own weight. The conveying trolley cannot generate traction force on the sucker rod. When the catwalk frame cannot be extended to the top of the wellhead due to the limitation of the site working condition, manual operation is needed to pull the sucker rod to tilt and lay flat. SUMMARY

[0004] The present application provides a kind of sucker rod clamp, overcome the deficiency of above-mentioned prior art, it can effectively solve the problem that the existing catwalk machine's sucker rod receiving seat cannot hold the sucker rod to pull the sucker rod to move together during lifting the sucker rod operation.

[0005] The technical scheme of the present application is realized by the following measures: an oil pumping rod clamp for clamping an oil pumping rod, the oil pumping rod comprising a rod body, wrench clamping sections arranged at both ends of the rod body, shoulders connected with the wrench clamping sections, joints connected with the shoulders, and coupling collars connected to the joints, the oil pumping rod clamp comprising a mounting plate, a receiving frame, a shoulder stop plate, a coupling collar push plate, a first rotating shaft, a second rotating shaft, a first constraint rod, and a second constraint rod, the first rotating shaft being horizontally arranged from front to back and rotatably mounted on the top of the mounting plate, the first rotating shaft being provided with the receiving frame for receiving the coupling collar, the receiving frame and the mounting plate being provided with a first elastic reset member, the receiving frame being connected with the shoulder stop plate, the shoulder stop plate being provided with a slotted opening for accommodating the wrench clamping section, the opening width of the slotted opening being smaller than the outer diameter of the shoulder, the receiving frame being able to be pressed downward by the oil pumping rod in a clockwise direction when the oil pumping rod is received, the second rotating shaft being horizontally arranged from front to back and rotatably mounted in the receiving frame, the second rotating shaft being provided with the coupling collar push plate, the coupling collar push plate being able to push the coupling collar to make the wrench clamping section exit the slotted opening when the coupling collar push plate is rotated in an anticlockwise direction, the first rotating shaft being connected with the first constraint rod, and the second rotating shaft being connected with the second constraint rod.

[0006] The following is a further optimization or / and improvement of the above-mentioned application scheme:

[0007] The above-mentioned receiving frame is rotatably mounted with a trigger tooth, the trigger tooth and the receiving frame being provided with a second elastic reset member, the mounting plate being provided with a trigger, the trigger tooth being able to be pressed by the coupling collar to be close to the trigger when the coupling collar is placed in the receiving frame, and the trigger being signal connected with a controller.

[0008] The above-mentioned receiving frame and the shoulder stop plate are hingedly connected together through a hinge shaft arranged horizontally from front to back, and the receiving frame and the shoulder stop plate are connected with a third elastic reset member.

[0009] The above-mentioned receiving frame comprises a bottom plate and side plates arranged on both sides of the bottom plate, the bottom plate comprising a left side section and a right side section connected in sequence from left to right, the left side section being arranged obliquely from top to bottom from left to right, and the right side section being arranged obliquely from bottom to top from left to right; and the shoulder stop plate is connected to the right part of the receiving frame.

[0010] The above-mentioned mounting plate is provided at the top with a limiting block abutting against the bottom of the receiving frame to prevent the receiving frame from being turned anticlockwise.

[0011] The present application has a reasonable structure, which can clamp the oil pumping rod during the oil pumping rod operation, thereby pulling the oil pumping rod to move together, so that the oil pumping rod does not need to be pulled flat by manual operation, the labor intensity of the operation personnel is reduced, and the operation efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 is a front structural schematic view of the best embodiment of the present application.

[0013] Fig. 2 is a perspective view of the preferred embodiment of the present application.

[0014] Fig. 3 is a front view of the preferred embodiment of the present application when installed on a power catwalk.

[0015] Fig. 4 is an enlarged view of A in Fig. 3.

[0016] Fig. 5 is a front view of the preferred embodiment of the present application when installed on a power catwalk.

[0017] Fig. 6 is an enlarged view of B in Fig. 5.

[0018] Fig. 7 is a structural schematic view of the sucker rod.

[0019] The codes in the drawings are as follows: 1 is the mounting plate, 2 is the receiving frame, 3 is the shoulder stop plate, 4 is the coupling push plate, 5 is the first rotating shaft, 6 is the second rotating shaft, 7 is the first constraint rod, 8 is the second constraint rod, 9 is the first elastic return member, 10 is the slot, 11 is the trigger tooth, 12 is the trigger, 13 is the hinge shaft, 14 is the limit block, 15 is the first track, 16 is the second track, 17 is the first pipe moving trolley, 18 is the second pipe moving trolley, 19 is the rod body receiving seat, 20 is the rod body, 21 is the wrench clamping section, 22 is the shoulder, 23 is the coupling, 24 is the first constraint guide rail, and 25 is the second constraint guide rail. DETAILED DESCRIPTION

[0020] The present application is not limited by the following examples, and the specific implementation can be determined according to the technical solutions of the present application and the actual situation.

[0021] In the present application, in order to facilitate the description, the relative position relationship of each component is described according to the layout of the accompanying drawings, such as: the position relationship of front, back, up, down, left, right, etc. is determined according to the layout direction of the accompanying drawings.

[0022] The present application will be further described below in conjunction with the examples and the accompanying drawings:

[0023] As shown in FIGS. 1-7, the oil pumping rod clamp is used for clamping the oil pumping rod, the oil pumping rod comprises a rod body 20, wrench clamping sections 21 arranged at both ends of the rod body 20, shoulders 22 connected with the wrench clamping sections 21, joints connected with the shoulders 22 and coupling collars 23 connected on the joints, the oil pumping rod clamp comprises a mounting plate 1, a receiving frame 2, a shoulder stop plate 3, a coupling collar pushing plate 4, a first rotation shaft 5, a second rotation shaft 6, a first constraint rod 7 and a second constraint rod 8, the first rotation shaft 5 horizontally arranged in front and back direction is rotatably installed on the top of the mounting plate 1, the receiving frame 2 for receiving the coupling collar 23 is arranged on the first rotation shaft 5, the first elastic reset member 9 is arranged between the receiving frame 2 and the mounting plate 1, the shoulder stop plate 3 is connected on the receiving frame 2, the slotted opening 10 for accommodating the wrench clamping section is arranged on the shoulder stop plate 3, the opening width of the slotted opening 10 is less than the outer diameter of the shoulder 22, the receiving frame 2 can be pressed downward by the oil pumping rod along the clockwise direction when the oil pumping rod is received and is tilted downward, the second rotation shaft 6 horizontally arranged in front and back direction is rotatably installed in the receiving frame 2, the coupling collar pushing plate 4 is arranged on the second rotation shaft 6, the coupling collar pushing plate 4 can push the coupling collar 23 to make the wrench clamping section exit the slotted opening 10 when the coupling collar pushing plate 4 is rotated along the counterclockwise direction, the first constraint rod 7 is connected on the first rotation shaft 5, and the second constraint rod 8 is connected on the second rotation shaft 6.

[0024] In use, the sucker rod clamp is installed on a power catwalk, the power catwalk comprising a first track 15, a second track 16, a first pipe moving trolley 17, a second pipe moving trolley 18, a first trolley driving mechanism and a second trolley driving mechanism; the first track 15 and the second track 16 are both inclined from left to right and from bottom to top, and the slope of the second track 16 is greater than that of the first track 15, the second track 16 is located on the lower side of the first track 15, the first pipe moving trolley 17 capable of moving between a first highest point position and a first lowest point position is slidably installed on the first track 15 through the first trolley driving mechanism, the first pipe moving trolley 17 is provided with a mounting position on the front side of the first track 15, the mounting plate 1 is mounted on the mounting position, the second pipe moving trolley 18 capable of moving between a second highest point position and a second lowest point position is slidably installed on the second track 16 through the second trolley driving mechanism, the second pipe moving trolley 18 is provided with a rod body receiving seat 19 on the front side of the second track 16 for receiving the rod body 20 of the sucker rod; the first track 15 corresponding to the first lowest point position is provided with a first constraint guide rail 24, when the first pipe moving trolley 17 moves close to the first lowest point position, the first constraint rod 7 is in sliding contact with the first constraint guide rail 24, and under the constraint action of the first constraint guide rail 24, the first constraint rod 7 rotates downward in the clockwise direction, thereby driving the receiving frame 2 to rotate downward in the clockwise direction, so that when the first pipe moving trolley 17 is located at the first lowest point position, the sucker rod can be withdrawn upward out of the receiving frame 2; the first track 15 corresponding to the first highest point position is provided with a second constraint rail, when the first pipe moving trolley 17 moves close to the first highest point position, the second constraint rod 8 is in sliding contact with the second constraint rail, and under the constraint action of the second constraint guide rail 25, the second constraint rod 8 rotates in the counterclockwise direction, thereby driving the coupling pushing plate 4 to rotate upward in the counterclockwise direction.

[0025] The power catwalk further comprises a controller; the first trolley driving mechanism comprises a first driving motor, a magnetic powder clutch, a first driving sprocket, a first driven sprocket and a first chain, the first track 15 is provided with the first driving sprocket and the first driven sprocket, the first driving sprocket and the first driven sprocket are wound with the first chain, the output end of the first driving motor and the input end of the magnetic powder clutch are in transmission connection, the output end of the magnetic powder clutch and the first driving sprocket are in transmission connection, and the first pipe moving trolley 17 is connected with the first chain; the second trolley driving mechanism comprises a second driving motor, a second driving sprocket, a second driven sprocket and a second chain, the second track 16 is provided with the second driving sprocket and the second driven sprocket, the second driving sprocket and the second driven sprocket are wound with the second chain, the output end of the second driving motor and the second driving sprocket are in transmission connection, and the second pipe moving trolley 18 is connected with the second chain; the controller is in signal connection with the first driving motor and the second driving motor.

[0026] When the sucker rod operation is started, initially, the first pipe moving trolley 17 and the second pipe moving trolley 18 are respectively located at the first highest point position and the second highest point position, the sucker rod is lifted by the elevator and the coupling 23 is placed in the receiving frame 2, the first trolley driving mechanism is started to drive the first pipe moving trolley 17 to move downward, the sucker rod is gradually tilted and laid flat in the process of the first pipe moving trolley 17 moving downward, when the sucker rod is tilted to a certain angle, the wrench clamping section 21 is just tilted into the slot 10 of the shoulder baffle 3, since the opening width of the slot 10 is smaller than the outer diameter of the shoulder 22, thus when the sucker rod clamp moves downward with the first pipe moving trolley 17, the shoulder baffle 3 abuts against the shoulder 22 of the sucker rod, the sucker rod clamp can pull the sucker rod to move together, that is, the sucker rod is clamped by the sucker rod clamp at this time, according to the requirement, the certain angle is not less than 30 degrees, with the first pipe moving trolley 17 continuing to move downward, the sucker rod continues to be tilted and laid flat, the receiving frame 2 also rotates downward along the clockwise direction under the action of the gravity of the sucker rod and overcomes the force of the first elastic reset member 9, when the sucker rod body is tilted on the rod body receiving seat 19, the elevator releases the upper end of the sucker rod, the second trolley driving mechanism is started to drive the second pipe moving trolley 18 to move downward, with the first pipe moving trolley 17 and the second pipe moving trolley 18 continuing to move downward along the first track 15 and the second track 16 respectively, the sucker rod is continuously tilted and laid flat by the sucker rod clamp, when the first pipe moving trolley 17 moves close to the first lowest point position, the first constraint rod 7 is in sliding contact with the first constraint guide rail 24, and rotates downward along the clockwise direction under the constraint of the first constraint guide rail 24, thereby driving the receiving frame 2 to rotate downward along the clockwise direction, when the first pipe moving trolley 17 moves to the first lowest point position on the first track 15, and the second pipe moving trolley 18 moves to the second lowest point position on the second track 16, the sucker rod is in a horizontal state, and the sucker rod can be pulled out of the receiving frame 2 upward.

[0027] When the sucker rod is operated, initially, the first pipe moving trolley 17 and the second pipe moving trolley 18 are respectively located at the first lowest point position and the second lowest point position, and the sucker rod is horizontally placed on the sucker rod clamp and the rod body receiving seat 19, specifically, the coupling 23 is located in the receiving frame 2, the spanner clamping section 21 is located in the slotted 10 of the shoulder baffle 3, and the rod body 20 is located on the rod body receiving seat 19, then the first trolley driving mechanism starts to drive the first pipe moving trolley 17 to move upwards, the second trolley driving mechanism starts to drive the second pipe moving trolley 18 to move upwards, along with the first pipe moving trolley 17 and the second pipe moving trolley 18 continue to move upwards along the first track 15 and the second track 16 respectively, the sucker rod is continuously lifted and the upper end is continuously inclined upwards, when the second pipe moving trolley 18 moves to the second highest point position, the upper end of the sucker rod is grabbed and lifted by the elevator, the sucker rod is separated from the rod body receiving seat 19, the first trolley driving mechanism continues to drive the first pipe moving trolley 17 to move upwards, when the first pipe moving trolley 17 approaches the first highest point position, the second constraint rod 8 is in sliding contact with the second constraint track, and rotates in the counterclockwise direction under the constraint of the second constraint guide rail 25, thereby driving the coupling pushing plate 4 to rotate in the counterclockwise direction upwards, when the coupling pushing plate 4 rotates in the counterclockwise direction upwards, the coupling 23 is pushed upwards to make the spanner clamping section move away from the side of the slot 10, when the first pipe moving trolley 17 moves to the first highest point position, the spanner clamping section completely exits the slot 10, at this time, the coupling 23 can be separated from the sucker rod clamp by continuously lifting the sucker rod by the elevator.

[0028] The sucker rod clamp of the present application can hold the sucker rod during the sucker rod lifting operation, thereby pulling the sucker rod to move together, so that the sucker rod does not need to be manually pulled to be placed flat, the labor intensity of the operation personnel is reduced, and the operation efficiency is improved.

[0029] The above embodiments can be further optimized or / and improved according to actual needs:

[0030] As shown in FIGS. 1-7, the trigger tooth 11 is rotatably installed in the receiving frame 2, the second elastic reset member is arranged between the trigger tooth 11 and the receiving frame 2, the trigger 12 is arranged on the mounting plate 1, and the trigger tooth 11 can be pressed downwards by the coupling 23 to approach the trigger 12 when the coupling 23 is placed in the receiving frame 2. In use, the trigger 12 is connected with the controller in signal, when the coupling 23 of the sucker rod is placed in the receiving frame 2 during the sucker rod lifting operation, the coupling 23 presses the trigger tooth 11 downwards to make the trigger tooth 11 approach the trigger 12, the trigger 12 sends a signal to the controller, the controller controls the first trolley driving mechanism to start, and the first trolley driving mechanism drives the first pipe moving trolley 17 to move downwards.

[0031] As shown in FIG. 1-7, the receiving frame 2 and the shoulder baffle 3 are hingedly connected together through a hinge shaft 13 arranged horizontally in front-rear direction, and a third elastic reset member is connected between the receiving frame 2 and the shoulder baffle 3. Thus, when the shoulder 22 of the sucker rod is blocked by the shoulder baffle 3 so that the coupling 23 of the sucker rod cannot be separated from the receiving frame 2, the shoulder baffle 3 can be overturned downward in clockwise direction against the force of the third elastic reset member under the thrust of the shoulder 22 of the sucker rod, thereby removing the blocking effect on the shoulder 22 of the sucker rod and ensuring that the sucker rod can be smoothly separated from the sucker rod clamp in the operation of lowering the sucker rod.

[0032] Specifically, the receiving frame 2 includes a bottom plate and side plates arranged on the front and rear sides of the bottom plate respectively, and the bottom plate includes a left side section and a right side section connected in sequence from left to right, the left side section is arranged obliquely from top to bottom from left to right, and the right side section is arranged obliquely from bottom to top from left to right; the shoulder baffle 3 is connected to the right part of the receiving frame 2. Specifically, the side plate includes a left side part and a right side part connected in sequence from left to right, the left side part is arranged obliquely from top to bottom from left to right, and the right side part is arranged obliquely from bottom to top from left to right, the left side parts of the front and rear side plates are connected to the front and rear sides of the left side section of the bottom plate respectively, the right side parts of the front and rear side plates are connected to the front and rear sides of the right side section of the bottom plate respectively, the shoulder baffle 3 is hingedly connected between the right side parts of the front and rear side plates, and the right ends of the right side parts of the front and rear side plates abut against the shoulder baffle 3, thereby being able to receive the coupling 23 of the sucker rod.

[0033] As shown in FIG. 1-7, the top of the mounting plate 1 is provided with a limiting block 14 abutting against the bottom of the receiving frame 2 to prevent the receiving frame 2 from being overturned counterclockwise.

[0034] Specifically, the first, second and third elastic reset members are all tension springs.

[0035] The above technical features constitute the best embodiment of the present application, which has strong adaptability and best implementation effect, and unnecessary technical features can be added or reduced according to actual needs to meet the needs of different situations.

Claims

1. A sucker rod clamp for clamping a sucker rod, the sucker rod comprising a rod body, a wrench gripping section provided at both ends of the rod body, a shoulder connected to the wrench gripping section, a joint connected to the shoulder, and a coupling connected to the joint, characterized in that The sucker rod clamp comprises a mounting plate, a receiving frame, a shoulder stop plate, a coupling pushing plate, a first rotating shaft, a second rotating shaft, a first constraint rod and a second constraint rod, the first rotating shaft being horizontally arranged from front to back and rotatably mounted on the top of the mounting plate, the receiving frame being arranged on the first rotating shaft and used for receiving the coupling, the first elastic reset member being arranged between the receiving frame and the mounting plate, the shoulder stop plate being connected to the receiving frame, the slot being arranged on the shoulder stop plate and used for accommodating the wrench clamping section, the opening width of the slot being smaller than the outer diameter of the shoulder, the receiving frame being able to be pressed downward by the sucker rod in the clockwise direction when the sucker rod is received, the second rotating shaft being horizontally arranged from front to back and rotatably mounted in the receiving frame, the coupling pushing plate being arranged on the second rotating shaft and used for pushing the coupling to make the wrench clamping section exit the slot when the coupling pushing plate is rotated in the counterclockwise direction, the first constraint rod being connected to the first rotating shaft, and the second constraint rod being connected to the second rotating shaft.

2. The sucker rod clamp of claim 1, wherein The trigger tooth is rotatably mounted in the receiving frame, the second elastic reset member is arranged between the trigger tooth and the receiving frame, the trigger is arranged on the mounting plate, and the trigger tooth is able to be pressed by the coupling to be close to the trigger when the coupling is placed in the receiving frame.

3. A sucker rod clamp according to claim 1 or 2, characterised in that The receiving frame and the shoulder stop plate are hingedly connected together through the hinge shaft arranged horizontally from front to back, and the third elastic reset member is connected between the receiving frame and the shoulder stop plate.

4. A sucker rod clamp according to claim 1 or 2, characterised in that The receiving frame comprises a bottom plate and side plates arranged on the left and right sides of the bottom plate, the bottom plate comprises a left side section and a right side section connected in sequence from left to right, the left side section is arranged obliquely from top to bottom from left to right, and the right side section is arranged obliquely from bottom to top from left to right; and the shoulder stop plate is connected to the right part of the receiving frame.

5. The sucker rod clamp of claim 3, wherein The receiving frame comprises a bottom plate and side plates arranged on the left and right sides of the bottom plate, the bottom plate comprises a left side section and a right side section connected in sequence from left to right, the left side section is arranged obliquely from top to bottom from left to right, and the right side section is arranged obliquely from bottom to top from left to right; and the shoulder stop plate is connected to the right part of the receiving frame.

6. A sucker rod clamp according to claim 1 or 2 or 5, characterized in that The top of the mounting plate is provided with the limiting block abutting against the bottom of the receiving frame to prevent the receiving frame from being turned counterclockwise.

7. The sucker rod clamp of claim 3, wherein The top of the mounting plate is provided with the limiting block abutting against the bottom of the receiving frame to prevent the receiving frame from being turned counterclockwise.

8. The sucker rod clamp of claim 4, wherein The top of the mounting plate is provided with the limiting block abutting against the bottom of the receiving frame to prevent the receiving frame from being turned counterclockwise.

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