A pipe and rod conveyor for oil drilling and workover operations

Abstract

The present invention relates to a pipe-rod conveyor for oil well drilling and workover operations, comprising a base frame, a pipe-rod conveying mechanism disposed on the base frame, and an upper pipe turning mechanism disposed on the base frame and adapted for the pipe-rod conveying mechanism. The pipe-rod conveying mechanism is provided with an upper and lower pipe auxiliary mechanism; the upper pipe turning mechanism is used to grab a pipe rod and deliver it to the pipe-rod conveying mechanism; the upper and lower pipe auxiliary mechanisms are used to assist in the detachment of the pipe rod from the pipe-rod conveying mechanism during pipe loading, and to assist in the insertion of the pipe rod from the elevator into the pipe-rod conveying mechanism during pipe lowering; the base frame is further provided with a lower pipe discharge auxiliary mechanism, which is used to assist in the discharge of the pipe rod from the pipe-rod conveying mechanism into the pipe rack after the pipe rod is detached. The present invention can solve the problem that existing pipe-rod conveyors used at oil well drilling and workover operations cannot provide a good auxiliary function in the loading and unloading of pipe rods.

Description

Technical Field

[0001] The invention relates to a pipe and rod conveyor for oil well drilling and repairing operations. Background Art

[0002] Pipe and rod conveyors are used in oil drilling and workover operations. Their primary function is to transport pipe and rod from the pipe rack to the wellhead, and vice versa. Currently, most pipe and rod conveyors used at oil drilling and workover sites suffer from drawbacks such as being large and heavy, making them inconvenient to transport and store, and causing severe damage to the pipe threads. Furthermore, they fail to effectively assist in the pipe loading and unloading operations. Summary of the Invention

[0003] The purpose of the present invention is to provide a pipe and rod conveyor for oil drilling and workover operations, which can solve the problem that the existing pipe and rod conveyors used in oil drilling and workover operations cannot play a good auxiliary role in the pipe and rod loading and unloading operations.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a pipe-rod conveyor for oil drilling and workover operations, comprising a base frame, a pipe-rod conveying mechanism arranged on the base frame, and an upper pipe turning mechanism arranged on the base frame and adapted to the pipe-rod conveying mechanism, and the pipe-rod conveying mechanism is provided with upper and lower pipe auxiliary mechanisms; the upper pipe turning mechanism is used to grab the pipe rods and then send them to the pipe-rod conveying mechanism; the upper and lower pipe auxiliary mechanisms are used to assist in the detachment of the pipe rods from the pipe-rod conveying mechanism when the pipe is being loaded, and to assist in the entry of the pipe rods from the elevator into the pipe-rod conveying mechanism when the pipe is being lowered; the base frame is also provided with a lower pipe discharge auxiliary mechanism, and the lower pipe discharge auxiliary mechanism is used to assist in the operation of discharging the pipe rods from the pipe-rod conveying mechanism and discharging them into the pipe rack.

[0005] Furthermore, a group of support columns are provided on the base frame, and the upper tube flipping mechanism includes a group of rotating support seats installed on the support columns, a rotating arm rotatably installed between the rotating support seats, and a group of pipe rod grabbers that can rotate with them are provided on the rotating arm; the end fixing device of the pipe rod grabber is on the rotating arm, and the top of the pipe rod grabber is provided with a hook that is adapted to the pipe rod, and the hook mouth is set upward; the rotating arm is also provided with an ear seat that can rotate with it, and the ear seat is hinged with a flipping cylinder for driving its rotation; the cylinder barrel of the flipping cylinder is provided with a cylinder fixing part for external connection, and the telescopic part of the flipping cylinder is hinged to the ear seat.

[0006] Furthermore, each rotating support seat is provided with a rotating positioning sleeve adapted to the rotating arm, and the rotating positioning sleeve and the rotating arm are connected in an axial sleeve type manner; the pipe rod gripper is respectively provided with one at the left and right ends of the rotating arm; the ear seat is provided in the middle of the rotating arm; the pipe rod gripper includes a fixed sleeve adapted to the rotating arm, and is arranged on two guide plates on the fixed sleeve, the end of the guide plate is a semicircular arc surface, the upper end surface of the guide plate is a horizontal plane tangent to the semicircular arc surface, and the front end of the upper end surface of the guide plate is provided with a downwardly inclined cut, which is adapted to the inner inclined surface of the hook; the hook is assembled at the front end between the two guide plates; a first pin is provided at the front end between the two guide plates, a second pin is provided in the middle between the two guide plates, a hanging ear is provided at the end of the hook, a compression spring is provided on the second pin, the other end of the compression spring is connected to the hook, and the end of the hook can be rotatably installed on the first pin; an upward flip limit plate is also provided between the two guide plates, and the upward flip limit plate is located above the end of the hook.

[0007] Furthermore, the outer wall of one of the two guide plates is provided with a buffer limit plate with a triangular arc surface, and a waist-shaped adjustment hole is provided on the buffer limit plate. Adjustment bolts that are adapted to the outer wall of the guide plate are installed at the top corner of the buffer limit plate and the waist-shaped adjustment hole; the bottom arc surface of the buffer limit plate can be adjusted to partially extend above the guide plate by adjusting the position of the adjusting bolt in the waist-shaped adjustment hole.

[0008] Furthermore, the pipe rod conveying mechanism includes a pipe rod conveying trough, a slide rail arranged in the pipe rod conveying trough, and a pipe conveying trolley that can slide along the slide rail; a pipe rod positioning groove is provided on the pipe conveying trolley, and the pipe rod positioning groove is an arc-shaped groove adapted to the outer wall of the pipe rod; the upper and lower pipe auxiliary mechanisms include a stripping cylinder, a pipe lifting cylinder, and a lifting cylinder arranged in the pipe rod conveying trough, the piston part of the stripping cylinder is retractably arranged in the pipe rod conveying trough, and a stripping lifting plate that can be raised and lowered with it is provided on the top of the piston part of the stripping cylinder, and a group of stripping transition plates are provided on the top of the left and right outer walls of the pipe rod conveying trough; the upper end face of the stripping lifting plate is an inclined surface inclined toward one of the left and right sides of the pipe rod conveying trough. ; The pipe lifting cylinder is arranged at the bottom of the pipe rod conveying trough near the discharge end, and the piston part of the pipe lifting cylinder is retractably arranged in the pipe rod conveying trough. The top of the piston part of the pipe lifting cylinder is provided with a pipe lifting placement seat which can be raised and lowered with it, and an arc-shaped placement groove adapted to the side wall of the pipe rod is provided on the pipe lifting placement seat, and an arc-shaped convex rib coaxial with it is provided at the bottom of the arc-shaped placement groove; a supporting guide wheel is provided at the discharge end of the pipe rod conveying trough; the top of the piston part of the lifting cylinder and the bottom of the pipe rod conveying trough near the discharge end are hinged, and a mounting notch is provided on the side of the base frame near the discharge end of the pipe rod conveying trough, and the pipe rod conveying trough can be movably mounted on the mounting notch; the bottom of the pipe rod conveying trough away from the discharge end is hinged to the base frame.

[0009] Furthermore, the lower pipe row auxiliary mechanism includes two pipe rod auxiliary arms respectively arranged at the left and right ends of the rotating arm. The pipe rod auxiliary arms are located below the stripping transition plate, adapted to the stripping transition plate, and can rotate with the rotating arm; each pipe rod auxiliary arm is provided with a group of shock-absorbing pads on the upper end surface of one end close to the rotating arm; the front end end of the pipe rod auxiliary arm is provided with an arc-shaped support gripper with an opening facing downward, and the arc-shaped support gripper is adapted to the pipe rack.

[0010] Furthermore, a support reinforcement seat is provided on the outer side wall of the pipe and rod conveying trough below the stripping transition plate, and the stripping transition plate is provided on the support reinforcement seat.

[0011] Furthermore, it also includes a length measuring structure, and the discharge end of the pipe rod conveying trough is open; the length measuring structure includes a length positioning plate arranged at the bottom of the discharge end of the pipe rod conveying trough, and an end point limit block is respectively provided on the inner walls on the left and right sides of the discharge end.

[0012] Furthermore, a group of concave liquid accumulation troughs are provided at the bottom of the pipe rod conveying trough; two stripping cylinders are provided along the conveying direction of the pipe rod conveying trough, and the base frame is provided with a first fixed seat corresponding to each stripping cylinder, the cylinder barrel of the stripping cylinder is installed on the first fixed seat, and the first fixed seat is also provided with a first lifting guide hole, and the bottom surface of the stripping lifting plate is provided with a first lifting guide column adapted to the lifting guide hole, and the first lifting guide column can be lifted and set in the first lifting guide hole; the piston part of the stripping cylinder is connected to the first fixed seat and the stripping The bottom surfaces of the lifting plates are connected; the frame is provided with a second fixed seat corresponding to the pipe lifting cylinder, the cylinder portion of the pipe lifting cylinder is installed on the second fixed seat, the second fixed seat is also provided with a second lifting guide hole, the bottom surface of the pipe lifting seat is provided with a second lifting guide column adapted to the lifting guide hole, the second lifting guide column can be lifted and lowered in the second lifting guide hole; the piston portion of the pipe lifting cylinder is connected to the bottom surface of the pipe lifting seat through the second fixed seat; the bottom of the pipe rod conveying trough is located at the front and rear sides of the stripping lifting plate, and an isolation baffle is respectively provided.

[0013] Furthermore, the pipe and rod conveying trough is a three-section U-shaped trough, including a left U-shaped trough, a middle U-shaped trough, and a right U-shaped trough that are connected and communicated with each other from left to right. The left U-shaped trough and the right U-shaped trough are hinged at the left and right end portions of the middle U-shaped trough; a group of clearance notches that are adapted to the stripping transition plate are provided on the top of the front and rear outer walls of the left U-shaped trough and the right U-shaped trough.

[0014] The left and right U-shaped grooves are provided with a plurality of adjusting screws, each of which is adapted to fit the outer wall of the middle U-shaped groove and the right U-shaped groove.

[0015] The present invention has the following beneficial effects: the upper tube flipping structure enables pipe rods to be grabbed and transported to the pipe rod conveying mechanism, then transported through the pipe rod conveying mechanism, and finally, the upper and lower tube auxiliary mechanisms enable the pipe rods to be detached from the pipe rod conveying mechanism, completing the pipe loading operation. Simultaneously, the upper and lower tube auxiliary mechanisms enable the pipe rods to be fed into the pipe rod conveying mechanism by an elevator, then transported through the pipe rod conveying mechanism, then detached from the pipe rod conveying mechanism by the upper and lower tube auxiliary mechanisms, and finally, the lower tube auxiliary mechanism enables the pipe rods to be discharged onto the pipe rack, finally completing the pipe unloading operation. The present invention not only ensures the normal transportation of pipe rods but also provides excellent assistance during pipe loading and unloading operations, effectively improving the efficiency of pipe loading and unloading, while also reducing labor intensity and increasing the safety factor of pipe loading and unloading operations. The pipe rod conveying trough is a three-section foldable structure that can be folded to shorten the entire machine during transportation, reducing the space occupied and ensuring that it can be transported by crane, avoiding the problem of the existing integrated pipe rod conveying trough that is difficult to transport.

[0016] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structural structure of the present invention.

[0018] Figure 2 This is a structural diagram of the pipe and rod conveying trough.

[0019] Figure 3 This is a structural diagram of the pipe and rod conveying trough when it is inverted.

[0020] Figure 4 for Figure 2 A partial enlarged view of area A in the middle.

[0021] Figure 5 for Figure 2 A partial enlarged view of area B in the middle.

[0022] Figure 6 for Figure 2 A partial enlarged view of part C in the middle.

[0023] Figure 7 for Figure 2 A partial enlarged view of area D in the middle.

[0024] Figure 8 This is a structural diagram of the pipe lifting cylinder.

[0025] Figure 9 It is a structural diagram of the lifting cylinder.

[0026] Figure 10 It is a structural diagram of the stripping cylinder.

[0027] Figure 11 This is a structural diagram of the pipe transport trolley.

[0028] Figure 12 It is a structural schematic diagram of the upper tube flipping mechanism and the lower tube auxiliary mechanism.

[0029] Figure 13 Another structural diagram of the upper tube flipping mechanism and the lower tube auxiliary mechanism

[0030] Figure 14 Schematic diagram of the structure of the pipe rod gripper.

[0031] Figure 15 This is an exploded view of the pipe rod gripper.

[0032] Figure 16 This is a side view of the pipe gripper.

[0033] Figure 17 This is a structural diagram of the pipe and rod conveying trough in a folded state.

[0034] In the figure, 1, base frame, 2, pipe rod conveying trough, 3, stripping cylinder, 4, stripping lifting plate, 5, stripping transition plate, 6, support reinforcement seat, 8, liquid accumulation tank, 9, length positioning plate, 10, end limit block, 11, support guide wheel, 12, pipe lifting cylinder, 13, pipe lifting placement seat, 14, arc placement groove, 15, arc convex rib 15, 16, lifting cylinder, 17, installation gap, 19, pipe transport trolley, 20, pipe rod positioning groove, 21, first fixed seat, 22, first lifting guide hole, 23, first lifting guide column, 24, isolation baffle, 25, second fixed seat, 26, second lifting guide hole, 27, second lifting guide column, 28, inclined surface, 29, hinged ear seat, 30, support column, 31, slide rail;

[0035] 101. Rotating support seat, 102. Rotating arm, 103. Pipe gripper, 104. Hook, 105. Ear seat, 106. Flip cylinder, 107. Cylinder fixing part, 108. Rotating positioning sleeve, 109. Fixing sleeve, 110. Guide plate, 111. Notch, 112. First pin, 113. Second pin, 114. Hanging ear, 115. Compression spring, 116. Upward limit plate, 117. Buffer limit plate, 118. Waist-shaped adjustment hole, 119. Adjusting bolt, 120. Pipe auxiliary arm, 121. Shock-absorbing pad, 122. Arc support gripper;

[0036] 201. Left U-shaped groove, 202. Middle U-shaped groove, 203. Right U-shaped groove, 204. Upward positioning plate, 205. Downward positioning plate, 206. Arc-shaped guide hole, 207. Notch, 208. Adjusting bolt, 209. External fixing bolt, 210. Upper positioning bolt, 211. Lower positioning bolt, 212. Clamping notch, 213. Limit bolt. DETAILED DESCRIPTION

[0037] Examples, such as Figures 1 to 17 The pipe-rod conveyor shown in the figure is used for oil drilling and workover operations, including a base frame 1, a pipe-rod conveying mechanism arranged on the base frame 1, and an upper pipe turning mechanism arranged on the base frame 1 and adapted to the pipe-rod conveying mechanism. The pipe-rod conveying mechanism is provided with an upper and lower pipe auxiliary mechanism; the upper pipe turning mechanism is used to grab the pipe rods and then convey them to the pipe-rod conveying mechanism; the upper and lower pipe auxiliary mechanisms are used to assist in the separation of the pipe rods from the pipe-rod conveying mechanism when the pipe is being loaded, and to assist in the insertion of the pipe rods from the elevator into the pipe-rod conveying mechanism when the pipe is being lowered; the base frame 1 is also provided with a lower pipe discharge auxiliary mechanism, which is used to assist in the discharge of the pipe rods from the pipe-rod conveying mechanism into the pipe rack after they have been separated from the pipe-rod conveying mechanism.

[0038] The upper pipe flipping mechanism is used to grab the pipe rods and convey them to the pipe rod conveying mechanism, and then they are conveyed by the pipe rod conveying mechanism. Finally, the upper and lower pipe auxiliary mechanisms are used to separate the pipe rods from the pipe rod conveying mechanism to complete the pipe loading operation. At the same time, the upper and lower pipe auxiliary mechanisms can be used to enable the elevators to feed the pipe rods into the pipe rod conveying mechanism, and then they are conveyed by the pipe rod conveying mechanism. Finally, the upper and lower pipe auxiliary mechanisms are used to separate the pipe rods from the pipe rod conveying mechanism, and finally, the lower pipe discharge auxiliary mechanism is used to discharge the pipe rods into the pipe rack.

[0039] A group of support columns 30 are provided on the base frame 1, and the upper tube flipping mechanism includes a group of rotating support seats 101 installed on the support columns 30, and a rotating arm 102 rotatably installed between each rotating support seat 101, and a group of pipe rod grippers 103 that can rotate with the pipe rod are provided on the rotating arm 102; the end fixing device of the pipe rod gripper 103 is provided on the rotating arm 102, and the top of the pipe rod gripper 103 is provided with a hook 104 that is adapted to the pipe rod, and the hook mouth of the hook 104 is set upward; the rotating arm 102 is also provided with an ear seat 105 that can rotate with it, and the ear seat 105 is hinged with a flip cylinder 106 for driving it to rotate; the cylinder barrel of the flip cylinder 106 is provided with a cylinder fixing part 107 for external connection, and the telescopic part of the flip cylinder 106 is hinged to the ear seat 105.

[0040] Each rotating support seat 101 is provided with a rotating positioning sleeve 108 adapted to the rotating arm 102, and the rotating positioning sleeve 108 and the rotating arm 102 are connected in an axial sleeve type manner; the pipe rod gripper 103 is respectively provided with one at the left and right ends of the rotating arm 102; the ear seat 105 is provided in the middle of the rotating arm 102; the pipe rod gripper 103 includes a fixed sleeve 109 adapted to the rotating arm 102, and two guide plates 110 are provided on the upper part of the fixed sleeve 109, the end of the guide plate 110 is a semicircular surface, and the upper end surface of the guide plate 110 is a horizontal plane tangent to the semicircular surface. The front end of the upper end surface of the guide plate 110 is provided with a downwardly inclined cutout 111, which is adapted to the inner inclined surface of the hook 104; the semicircular surface, the horizontal surface, and the cutout 111 are all to ensure that the pipe rod can stably and reliably get from the hook 104 along the guide plate 110 and fall into the pipe rod conveying mechanism. The hook 104 is mounted at the front end between the two guide plates 110. A first pin 112 is provided at the front end between the two guide plates 110, and a second pin 113 is provided in the middle between the two guide plates 110. A hook 114 is provided at the end of the hook 104. A compression spring 115 is attached to the second pin 113, the other end of which is connected to the hook 104. The end of the hook 104 is rotatably mounted on the first pin 112. An upward limit plate 116 is also provided between the two guide plates 110, located above the end of the hook 104. When the pipe handle 103 is tilted downward clockwise, if there is an obstacle below the hook 104, the hook 104 will tilt upward counterclockwise around the first pin 112 due to resistance, thus providing a buffer and preventing direct hard contact. If the hook 104 were fixedly connected, it would continue to tilt downward upon encountering an obstacle, resulting in direct damage due to the impact.

[0041] The outer wall of one of the two guide plates 110 is provided with a triangular arc-shaped buffer stopper 117. A waist-shaped adjustment hole 118 is provided on the buffer stopper 117. Adjustment bolts 208119 that mate with the outer wall of the guide plate 110 are installed at the top corner of the buffer stopper 117 and within the waist-shaped adjustment hole 118. The bottom arc of the buffer stopper 117 can be adjusted by adjusting the position of the adjustment bolts 208119 within the waist-shaped adjustment hole 118 until it partially protrudes above the guide plate 110. The extent to which the buffer stopper 117 protrudes from the guide plate 110 can be adjusted as needed, allowing pipes and rods to more stably and reliably fall into the pipe and rod conveying mechanism.

[0042] The pipe rod conveying mechanism includes a pipe rod conveying trough 2, a slide rail 31 arranged in the pipe rod conveying trough 2, and a pipe conveying trolley 19 that can slide along the slide rail 31; a pipe rod positioning groove 20 is provided on the pipe conveying trolley 19, and the pipe rod positioning groove 20 is an arc-shaped groove adapted to the outer wall of the pipe rod; the upper and lower pipe auxiliary mechanisms include a stripping cylinder 3, a pipe lifting cylinder 12, and a lifting cylinder 16 arranged in the pipe rod conveying trough 2, the piston part of the stripping cylinder 3 is telescopically arranged in the pipe rod conveying trough 2, and a stripping lifting plate 4 that can be raised and lowered with it is provided on the top of the piston part of the stripping cylinder 3, and a group of stripping transition plates 5 are provided on the top of the outer walls on the left and right sides of the pipe rod conveying trough 2; the upper end face of the stripping lifting plate 4 is an inclined surface 28 inclined toward one of the left and right sides of the pipe rod conveying trough 2; the pipe lifting cylinder 12 is provided in the pipe rod conveying trough 2 near the discharge end. At the bottom, the piston of the pipe lifting cylinder 12 is telescopically arranged in the pipe rod conveying trough 2, and the top of the piston of the pipe lifting cylinder 12 is provided with a pipe lifting seat 13 which can be raised and lowered with it, and an arc-shaped placement groove 14 adapted to the side wall of the pipe rod is provided on the pipe lifting seat 13, and an arc-shaped convex rib 15 coaxial with it is provided at the bottom of the arc-shaped placement groove 14; a supporting guide wheel 11 is mounted at the discharge end of the pipe rod conveying trough 2; the top of the piston of the lifting cylinder 16 is hinged to the bottom of the pipe rod conveying trough 2 near the discharge end, and the back of the base frame 1 and the pipe rod conveying trough 2 are respectively provided with hinged ears 29 adapted to the two ends of the lifting cylinder 16; a mounting notch 17 is provided on one side of the base frame 1 near the discharge end of the pipe rod conveying trough 2, and the pipe rod conveying trough 2 can be movably mounted on the mounting notch 17; the bottom of the pipe rod conveying trough 2 away from the discharge end is hinged to the base frame 1. The arrangement of the arcuate rib 15 can reduce friction, while the arcuate placement groove 14 can well limit and orient the pipe rod.

[0043] The lower pipe-discharging auxiliary mechanism includes two pipe-rod auxiliary arms 120, one at each of the left and right ends of the rotating arm 102. The pipe-rod auxiliary arms 120 are located below the stripping transition plate, are compatible with the stripping transition plate, and can rotate with the rotating arm 102. The upper end surface of each pipe-rod auxiliary arm 120, which is close to the rotating arm 102, is provided with a set of shock-absorbing pads 121. The front end of the pipe-rod auxiliary arm 120 is provided with an arc-shaped support gripper 122 with a downward opening, which is compatible with the pipe rack. The provision of the shock-absorbing blocks can play a certain role in shock absorption and buffering when the pipe rod falls to the pipe-rod auxiliary arm 120, ensuring that the pipe rod falls smoothly onto the pipe-rod auxiliary arm 120 and falls along the pipe-rod auxiliary arm 120.

[0044] The outer wall of the pipe and rod conveyor trough 2, located below the stripper transition plate, is equipped with a support and reinforcement seat 6. The stripper transition plate 5 is mounted on this support and reinforcement seat 6. Sensors are installed on the outer walls of both ends of the pipe and rod conveyor trough 2 to sense the pipe transport trolley 19. The installation of the support and reinforcement seat 6 is mainly to enhance the stability and reliability of the stripper transition plate 5, preventing deformation and damage caused by the impact of falling pipes.

[0045] This pipe-rod conveyor for oil well drilling and workover operations also includes a length measurement structure. The discharge end of the pipe-rod conveyor trough 2 is open. This length measurement structure includes a length positioning plate 9 disposed at the bottom of the discharge end of the pipe-rod conveyor trough 2. End stoppers 10 are respectively provided on the left and right inner walls of the discharge end. These end stoppers 10 primarily serve as a limiter.

[0046] A group of concave liquid accumulation troughs 8 are also provided at the bottom of the pipe rod conveying trough 2. The liquid accumulation troughs 8 are mainly provided to facilitate sewage discharge; two dematerializing cylinders 3 are provided along the conveying direction of the pipe rod conveying trough 2. The provision of two dematerializing cylinders 3 can ensure the reliable realization of dematerializing. Of course, it is not limited to two, and can be other numbers. As long as the main functions realized are similar to those in this case, they should be included in the protection scope of this case.

[0047] The base frame 1 is respectively provided with a first fixed seat 21 corresponding to each stripping cylinder 3, the cylinder portion of the stripping cylinder 3 is installed on the first fixed seat 21, and the first fixed seat 21 is also provided with a first lifting guide hole 22, and the bottom surface of the stripping lifting plate 4 is provided with a first lifting guide column 23 adapted to the lifting guide hole, and the first lifting guide column 23 can be lifted and lowered in the first lifting guide hole 22; the piston portion of the stripping cylinder 3 is connected to the bottom surface of the stripping lifting plate 4 through the first fixed seat 21; the frame is provided with a second fixed seat 25 corresponding to the pipe lifting cylinder 12, the cylinder portion of the pipe lifting cylinder 12 is installed on the second fixed seat 25, and the second fixed seat 25 is also provided with a second lifting guide hole 26, the bottom surface of the pipe lifting placement seat 13 is provided with a second lifting guide column 27 adapted to the lifting guide hole, and the second lifting guide column 27 can be lifted and lowered in the second lifting guide hole 26; the piston portion of the pipe lifting cylinder 12 is connected to the bottom surface of the pipe lifting placement seat 13 through the second fixed seat 25. The first and second lifting guide holes 22, 26, first and second lifting guide posts 23, 27 are provided primarily to ensure the reliability of the stripping cylinder 3 and the pipe lifting cylinder 12 and to prevent deviations. Isolation baffles 24 are located at the bottom of the pipe and rod conveying trough 2, located on both sides of the stripping and lifting plate 4. These baffles 24 serve to prevent contamination.

[0048] The pipe and rod conveying trough 2 is a three-section U-shaped trough, including a left U-shaped trough 201, a middle U-shaped trough 202, and a right U-shaped trough 203 which are connected and communicated with each other from left to right. The left U-shaped trough 201 and the right U-shaped trough 203 are hinged at the left and right ends of the middle U-shaped trough 202; a group of clearance notches 207 adapted to the stripping transition plate are provided on the top of the front and rear outer walls of the left U-shaped trough and the right U-shaped trough 203.

[0049] A folding hinge structure is provided between the middle U-shaped groove 202 and the left U-shaped groove 201 and the right U-shaped groove 203. The folding hinge structure includes an upward positioning plate 204 provided at the left and right ends of the middle U-shaped groove 202 and the upper part of the front and rear outer walls, and a downward positioning plate 205 provided at the left and right ends of the middle U-shaped groove 202 and the lower part of the front and rear outer walls; an arc-shaped guide hole 206 is provided on the upward positioning plate 204, and an adjusting bolt 208119 adapted to the outer wall of the middle U-shaped groove 202 is provided in the arc-shaped guide hole 206. The adjusting bolt 208119 is located in the arc-shaped guide hole 206. 06 is adjustable; the upward positioning plate 204 is located outside the arc-shaped guide hole 206 and is also provided with an external fixing bolt 209 adapted to the outer side walls of the left U-shaped groove 201 and the right U-shaped groove 203, and an upper positioning bolt 210 adapted to the middle U-shaped groove 202; one end of the downward positioning plate 205 is provided with a lower positioning bolt 211 adapted to the outer side wall of the middle U-shaped groove 202, and the other end is provided with a limiting card hole, and the limiting card hole is provided with a card notch 212 opening outward; the outer side walls of the left U-shaped groove and the right U-shaped groove 203 are provided with a limiting bolt 213 adapted to the card notch 212.

[0050] When conveying pipes and rods for oil drilling and well repair operations, this pipe-and-rod conveyor is in an upwardly folded state. The upwardly folding positioning plate 204 is assembled between the left U-shaped groove 201, the right U-shaped groove 203, and the middle U-shaped groove 202 via external fixing bolts 209 and upper positioning bolts 210. Adjusting bolts 208119 adjust the relative position of the arcuate guide hole 206 to achieve upward and downward folding. In the downward folding state, the limiting bolts 213 engage the engaging notches 212, and in conjunction with the lower positioning bolts 211 and the upwardly folding positioning plate 2044, the left and right U-shaped grooves 201 and 202 are supported and positioned. When tilting upward, the limiting bolts 213 are removed from the engaging notches 212. By adjusting the position of the adjusting bolts 208119 relative to the arcuate guide hole 206, the left and right U-shaped grooves 201 and 2011 are tilted and folded upwardly to the upper left and upper right portions of the middle U-shaped groove 202. The cooperation of the stripping transition plate and the clearance notch 207 can not only play a supporting and guiding role for the pipe rod on the lower pipe positioning platform when the pipe is lowered, but also better support the left U-shaped groove 201 and the right U-shaped groove 203 when the pipe is flipped up and folded, and at the same time, position the left U-shaped groove 201, the right U-shaped groove 203 and the middle U-shaped groove 202. The flipping up and folding can be achieved by a crane with manual assistance, or by setting a suitable drive structure. The present invention does not focus on the method for flipping up and folding, so it will not be described in detail.

[0051] Because the pipe rods are very long, the entire pipe rod conveyor is also very long. During transportation, the entire pipe rod conveyor takes up a lot of space, making it impossible to transport it by crane. It needs to be disassembled and the overall length reduced for transportation, which is very inconvenient. By designing it to be foldable, the total length of the pipe rod conveyor trough 2 can be reduced to about one-third of its original length. In this way, when it is necessary to transport it, it can be directly transported by crane by simply folding it, which provides convenient transportation.

[0052] When loading a pipe, the pipe gripper 103 in the pipe-loading tilting mechanism grasps the pipe rod. The tilting cylinder 106 then rotates the rotating arm 102, causing the pipe gripper 103 to tilt upward. The pipe rod then drops from the gripper 103 into the pipe conveying trough 2, with one end resting on the pipe trolley 19. Initially, the trolley 19 is at the starting position. The control device then activates the pipe drive mechanism, causing the trolley 19 to slide along the slide rail 31 toward the terminal end. When the end of the pipe rod facing away from the trolley 19 abuts the length positioning plate 9, the control device calculates the pipe rod length based on the travel of the trolley 19. Once the pipe rod length is measured, the pipe lifting cylinder 12 activates, raising its piston until the arc-shaped receiving groove 14 encircles the pipe rod, lifting it. After the pipe rod is lifted, the trolley 19 continues to move forward until the pipe rod rests on the supporting guide wheel 11, after which the pipe lifting cylinder 12 retracts to its initial position. After the lifting cylinder 16 operates to raise the pipe-rod conveyor 2 to a certain angle, the pipe-carrying trolley 19 continues to move forward with the pipe rod for a short distance before the elevator grabs the pipe rod. At this point, the drive device of the pipe-carrying trolley 19 no longer provides power, the elevator pulls upward, and the pipe-rod acting on the trolley 19 continues to move forward until the trolley 19 reaches its final position. The elevator continues to pull upward, and the pipe rod is completely released from the trolley 19 and the pipe-rod conveyor 2. This completes the pipe loading operation.

[0053] During the pipe lowering operation, the elevator unhooks and the pipe rod conveying trough 2 is lifted to a certain tilt angle by the lifting cylinder 16. The pipe transport trolley 19 is located near the end of the elevator. One end of the pipe rod is placed on the pipe transport trolley 19, and the pipe rod is lowered by the elevator. The pipe transport trolley 19 moves backward. After the elevator reaches the lowest point, the elevator releases the pipe rod, and the end of the pipe rod away from the pipe transport trolley 19 is on the supporting guide wheel 11. Then, the pipe transport trolley 19 continues to move backward with the pipe rod through the driving mechanism. After moving to the end, the stripping cylinder 3 works and the stripping lifting plate 4 lifts the pipe rod, so that the pipe rod is separated from the pipe transport trolley 19 and slides down along the inclined surface 28 to the stripping transition plate 5. The pipe rod then falls from the stripping transition plate 5 to the pipe rod auxiliary arm 120, slides down along the pipe rod auxiliary arm 120, falls into the pipe rack to the arc-shaped support gripper 122, and completes the pipe lowering operation.

[0054] In the description of the present invention, it should be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In addition, the term "including" and any variations thereof are intended to cover non-exclusive inclusions.

[0055] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0056] The terms used herein are intended only to describe specific embodiments and are not intended to limit exemplary embodiments. Unless the context clearly indicates otherwise, the singular forms "a", "an", "an item" used herein are also intended to include the plural. It should also be understood that the terms "comprise" and / or "include" used herein specify the presence of stated features, integers, steps, operations, units and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, units, components and / or combinations thereof.

[0057] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described method. Any non-substantial improvements made using the method concepts and technical solutions of the present invention, or any direct application of the above-described concepts and technical solutions to other situations without modification, fall within the scope of protection of the present invention.

Claims

1. A pipe and rod conveyor for oil well drilling and workover operations, comprising a base frame and a pipe and rod conveying mechanism disposed on the base frame, characterized in that: The upper pipe turning mechanism is provided on the base frame and adapted to the pipe-rod conveying mechanism, and the pipe-rod conveying mechanism is provided with an upper and lower pipe auxiliary mechanism; the upper pipe turning mechanism is used to grab the pipe rod and then deliver it to the pipe-rod conveying mechanism; the upper and lower pipe auxiliary mechanism is used to assist in the separation of the pipe rod from the pipe-rod conveying mechanism when the pipe is placed, and to assist in the insertion of the pipe rod from the elevator into the pipe-rod conveying mechanism when the pipe is lowered; the base frame is also provided with a lower pipe discharge auxiliary mechanism, which is used to assist in the discharge of the pipe rod from the pipe-rod conveying mechanism to the pipe rack after the pipe rod is separated from the pipe-rod conveying mechanism; A group of support columns are provided on the base frame, and the upper tube turning mechanism includes a group of rotating support seats installed on the support columns, a rotating arm rotatably installed between the rotating support seats, and a group of pipe rod grabbers that can rotate with the pipe rod are provided on the rotating arm; the end fixing device of the pipe rod grabber is on the rotating arm, and the top of the pipe rod grabber is provided with a hook adapted to the pipe rod, with the hook mouth facing upward; the rotating arm is also provided with an ear seat that can rotate with the pipe rod, and the ear seat is hinged with a turning cylinder for driving the rotation thereof; the cylinder barrel of the turning cylinder is provided with a cylinder fixing piece for external connection, and the telescopic part of the turning cylinder is hinged to the ear seat; Each rotating support seat is provided with a rotating positioning sleeve adapted to the rotating arm, and the rotating positioning sleeve and the rotating arm are connected in an axial sleeve type manner; the pipe rod gripper is located at the left and right ends of the rotating arm, one of which is respectively provided with a lug; the ear seat is provided in the middle of the rotating arm; the pipe rod gripper includes a fixed sleeve adapted to the rotating arm, and is arranged on two guide plates on the fixed sleeve, the end of the guide plate is a semicircular arc surface, the upper end surface of the guide plate is a horizontal plane tangent to the semicircular arc surface, and the front end of the upper end surface of the guide plate is provided with a downwardly inclined cut, which is adapted to the inner inclined surface of the hook; the hook is assembled at the front end between the two guide plates; a first pin is provided at the front end between the two guide plates, a second pin is provided in the middle between the two guide plates, and a hanging ear is provided at the end of the hook, and a compression spring is provided on the second pin, the other end of the compression spring is connected to the hook, and the end of the hook can be rotatably installed on the first pin; an upward flip limit plate is also provided between the two guide plates, and the upward flip limit plate is located above the end of the hook.

2. The pipe and rod conveyor for oil well drilling and workover operations according to claim 1, characterized in that: The outer side wall of one of the two guide plates is provided with a buffer limit plate with a triangular arc surface, and a waist-shaped adjustment hole is provided on the buffer limit plate. Adjustment bolts that are adapted to the outer side wall of the guide plate are installed at the top corner of the buffer limit plate and in the waist-shaped adjustment hole; the bottom arc surface of the buffer limit plate can be adjusted to partially extend above the guide plate by adjusting the position of the adjusting bolt in the waist-shaped adjustment hole.

3. The pipe and rod conveyor for oil well drilling and workover operations according to claim 1 or 2, characterized in that: The pipe-rod conveying mechanism includes a pipe-rod conveying trough, a slide rail arranged in the pipe-rod conveying trough, and a pipe-conveying trolley that can slide along the slide rail; a pipe-conveying trolley is provided with a pipe-rod positioning groove, and the pipe-rod positioning groove is an arc-shaped groove adapted to the outer wall of the pipe-rod; the upper and lower pipe auxiliary mechanisms include a stripping cylinder, a pipe-lifting cylinder, and a lifting cylinder arranged in the pipe-rod conveying trough, the piston of the stripping cylinder is retractably arranged in the pipe-rod conveying trough, and a stripping lifting plate that can be raised and lowered with the piston of the stripping cylinder is provided on the top of the piston, and a group of stripping transition plates are provided on the top of the left and right outer walls of the pipe-rod conveying trough; the upper end face of the stripping lifting plate is an inclined surface inclined toward one of the left and right sides of the pipe-rod conveying trough; the lifting plate The pipe cylinder is arranged at the bottom of the pipe rod conveying trough near the discharge end, and the piston part of the pipe lifting cylinder is retractably arranged in the pipe rod conveying trough. The top of the piston part of the pipe lifting cylinder is provided with a pipe lifting placement seat which can be raised and lowered with it, and an arc-shaped placement groove adapted to the side wall of the pipe rod is provided on the pipe lifting placement seat, and an arc-shaped convex rib coaxial with it is provided at the bottom of the arc-shaped placement groove; a supporting guide wheel is provided at the discharge end of the pipe rod conveying trough; the top of the piston part of the lifting cylinder and the bottom of the pipe rod conveying trough near the discharge end are hinged, and a mounting notch is provided on the side of the base frame near the discharge end of the pipe rod conveying trough, and the pipe rod conveying trough can be movably mounted on the mounting notch; the bottom of the pipe rod conveying trough away from the discharge end is hinged to the base frame.

4. The pipe and rod conveyor for oil well drilling and workover operations according to claim 3, characterized in that: The lower pipe row auxiliary mechanism includes two pipe rod auxiliary arms respectively arranged at the left and right ends of the rotating arm. The pipe rod auxiliary arms are located below the stripping transition plate, adapted to the stripping transition plate, and can rotate with the rotating arm; the upper end surface of each pipe rod auxiliary arm close to the rotating arm is provided with a group of shock-absorbing pads; the front end end of the pipe rod auxiliary arm is provided with an arc-shaped support gripper with an opening facing downward, and the arc-shaped support gripper is adapted to the pipe row rack.

5. The pipe and rod conveyor for oil well drilling and workover operations according to claim 4, characterized in that: The outer side wall of the pipe and rod conveying trough is provided with a support and reinforcement seat below the stripping transition plate, and the stripping transition plate is provided on the support and reinforcement seat.

6. The pipe and rod conveyor for oil well drilling and workover operations according to claim 5, characterized in that: It also includes a length measuring structure, and the discharge end of the pipe rod conveying trough is open; the length measuring structure includes a length positioning plate arranged at the bottom of the discharge end of the pipe rod conveying trough, and an end point limit block is respectively arranged on the inner walls on the left and right sides of the discharge end.

7. The pipe and rod conveyor for oil well drilling and workover operations according to claim 6, characterized in that: A group of concave liquid accumulation troughs are also provided at the bottom of the pipe and rod conveying trough; two stripping cylinders are provided along the conveying direction of the pipe and rod conveying trough, and the base frame is provided with a first fixed seat corresponding to each stripping cylinder, and the cylinder barrel of the stripping cylinder is installed on the first fixed seat, and the first fixed seat is also provided with a first lifting guide hole, and the bottom surface of the stripping lifting plate is provided with a first lifting guide column adapted to the lifting guide hole, and the first lifting guide column can be lifted and lowered in the first lifting guide hole; the piston part of the stripping cylinder is lifted and lowered through the first fixed seat and the stripping lifting plate The bottom surface of the pipe lifting cylinder is connected; the frame is provided with a second fixed seat corresponding to the pipe lifting cylinder, the cylinder portion of the pipe lifting cylinder is installed on the second fixed seat, the second fixed seat is also provided with a second lifting guide hole, the bottom surface of the pipe lifting seat is provided with a second lifting guide column adapted to the lifting guide hole, and the second lifting guide column can be lifted and lowered in the second lifting guide hole; the piston portion of the pipe lifting cylinder is connected to the bottom surface of the pipe lifting seat through the second fixed seat; the bottom of the pipe rod conveying trough is located at the front and rear sides of the stripping lifting plate, and an isolation baffle is respectively provided.

8. The pipe and rod conveyor for oil well drilling and workover operations according to claim 7, characterized in that: The pipe and rod conveying trough is a three-section U-shaped trough, including a left U-shaped trough, a middle U-shaped trough, and a right U-shaped trough which are connected and communicated from left to right. The left U-shaped trough and the right U-shaped trough are hinged at the left and right end portions of the middle U-shaped trough; a group of clearance notches adapted to the stripping transition plate are provided on the top of the front and rear outer walls of the left U-shaped trough and the right U-shaped trough.

9. The pipe and rod conveyor for oil well drilling and workover operations according to claim 8, characterized in that: The left and right U-shaped grooves are provided with a plurality of adjusting screws, each of which is adapted to fit the outer wall of the middle U-shaped groove.

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