A pipe rod conveyor

Abstract

The present invention discloses a pipe-rod conveyor, which relates to the field of mechanical equipment and solves the problem that the pipe-rod conveyor in the prior art has no sucker rod conveying function. The feeding clamping mechanism of the present invention is used to clamp the pipe column and / or the sucker rod, and convey the pipe column and / or the sucker rod to the pulley clamping mechanism for clamping; the lifting mechanism is installed on the track changing mechanism, so that the lifting mechanism can increase its height while moving forward; the pulley mechanism is installed in the slide groove of the lifting mechanism and moves in the horizontal direction in the slide groove; the pulley clamping mechanism is installed in the pulley mechanism, so that the pulley clamping mechanism can drive the pipe column and / or the sucker rod clamped on the pulley clamping mechanism to move in the horizontal direction through the horizontal movement of the pulley mechanism. The pipe-rod conveyor can realize the conveying of sucker rods, which solves the technical problem that the pipe-rod conveyor in the prior art has no sucker rod conveying function and still uses manual labor to drag the sucker rod to the pipe rack, which is labor-intensive.

Description

Technical Field

[0001] The invention relates to oilfield well repairing operation equipment technology, belongs to the field of mechanical equipment, and in particular to a pipe-rod conveyor. Background Art

[0002] The main process of minor repair work in oil fields is to lift and lower pumping rods and various types of tubing. When lowering tubing into the well in traditional minor repair work, it is necessary to manually lift the front end of the tubing to the tubing bench and lift it with an elevator. When lifting the tubing from the well, it is necessary to manually push the tubing away from the wellhead and place it on the tubing bench. However, the work site is often muddy and slippery, especially in winter, and workers often slip, bump, and get caught, posing a great safety risk. In order to reduce the labor intensity of workers and improve work safety, major oil fields have currently used pipe-rod conveyors to replace manual work.

[0003] However, the applicant has found that the pipe-rod conveyors currently used in major oil fields still have at least the following defects: (1) Most of the pipe-rod conveyors do not have the function of conveying sucker rods, and still use manual labor to drag the sucker rods to the pipe rack, which is labor-intensive; (2) Most pipe-rod conveyors use V-shaped slides. When lifting or lowering the pipe string, the pipe string and the slide slide, causing the pipe string thread to easily wear; (3) During the lifting process of the pipe string, the angle between the pipe string and the conveyor slide changes between 0 and 90 degrees as the traveling block hook is lifted, but the currently commonly used pipe-rod conveyors cannot achieve the change of pipe string clamping angle; (4) Most pipe-rod conveyors use a four-bar linkage or a scissor fork mechanism for lifting, which cannot achieve the synchronization of lifting and forward movements, resulting in long operation time and low efficiency; (5) The pipe-rod conveyor has large dimensions, occupies a large space, and has high transportation costs, which is not conducive to the placement of pipe strings at the well site and the transfer and transportation of equipment.

[0004] Therefore, improving the pipe-rod conveyor in the prior art and providing a new type of pipe-rod conveyor have become technical problems that need to be solved urgently by those skilled in the art. Summary of the invention

[0005] One of the purposes of the present invention is to provide a pipe-rod conveyor, which solves the technical problem that the pipe-rod conveyor in the prior art has no sucker rod conveying function. The various technical effects that can be produced by the preferred technical solution of the present invention are described in detail below.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The pipe-rod conveyor of the present invention comprises a frame, a feeding and clamping mechanism installed on the frame, a lifting mechanism, a pulley mechanism, a pulley clamping mechanism and a track-changing mechanism, wherein the feeding and clamping mechanism is used to clamp the pipe string and / or the sucker rod, and convey the pipe string and / or the sucker rod to the pulley clamping mechanism, and clamp the pipe string and / or the sucker rod through the pulley clamping mechanism; the lifting mechanism is installed on the track-changing mechanism, so that the lifting mechanism can increase its height while moving forward; the pulley mechanism is installed in the slide groove of the lifting mechanism, and the pulley mechanism can move in the horizontal direction in the slide groove of the lifting mechanism; the pulley clamping mechanism is installed in the pulley mechanism, so that the pulley clamping mechanism can drive the pipe string and / or the sucker rod clamped on the pulley clamping mechanism to move in the horizontal direction through the movement of the pulley mechanism in the horizontal direction.

[0008] According to a preferred embodiment, the feeding clamping mechanism includes a round tube, a feeding clamping hook, a clamping cylinder and a feeding liquid cylinder, wherein the round tube is installed on the frame, one end of the feeding clamping hook is fixed on the round tube, and the other end is used to clamp the pipe string and / or the sucker rod; the clamping liquid cylinder is installed on the clamping arm, and the clamping liquid cylinder is used to push the feeding clamping hook to clamp the pipe string and / or the sucker rod; the feeding liquid cylinder is installed on the round tube to push the round tube to rotate through the extension and contraction of the feeding liquid cylinder, so as to transport the pipe string and / or the sucker rod to the lifting mechanism and the pulley mechanism.

[0009] According to a preferred embodiment, the loading clamping hook has a first hook and a second hook at one end for clamping the tubing and / or the sucker rod, and the ends of the first hook and the second hook cross each other, so as to clamp both sides of the tubing and / or the sucker rod through the first hook and the second hook, or to clamp the tubing and / or the sucker rod in a gap formed by the intersection of the first hook and the second hook.

[0010] According to a preferred embodiment, two sets of the feeding and clamping mechanisms are installed on one side of the pipe-rod conveyor, and the two sets of the feeding and clamping mechanisms are used to clamp the pipe string and / or the sucker rod at the same time.

[0011] According to a preferred embodiment, the slide groove of the lifting mechanism is formed by welding two groups of I-beams, and sprockets are respectively installed at both ends of the slide groove. The two groups of sprockets are connected by chains, and one group of the sprockets is installed with a hydraulic motor and a clutch, so that the pulley mechanism can move forward and backward in the slide groove through the action of the hydraulic motor and the clutch.

[0012] According to a preferred embodiment, the pulley clamping mechanism includes a clamping crooked arm, a clamping plate, a clamping cylinder, a rotating bearing seat, a rotating bearing and a rotating shaft, wherein the rotating shaft and the rotating bearing seat are installed in the longitudinal direction of the clamping plate, the rotating bearing is installed in the rotating bearing seat, and the rotating bearing is installed on the rotating shaft, the clamping plate and the rotating shaft are fixed as a whole, and the rotating shaft can rotate in the vertical direction, so that the pulley clamping mechanism can, under the action of the clamping cylinder, drive the clamping crooked arm to move laterally and push the clamping plate to move to clamp the pipe column and / or sucker rod while maintaining rotation in the vertical direction.

[0013] According to a preferred embodiment, the pulley clamping mechanism includes two groups of clamping arms and two groups of clamping plates.

[0014] According to a preferred embodiment, the track-changing mechanism comprises two track-changing channel steels, the track-changing channel steels are inclined tracks, and the lifting mechanism is installed in the track-changing channel steels, so that the lifting mechanism can move in the horizontal direction and the vertical direction at the same time.

[0015] According to a preferred embodiment, the track changing mechanism also includes a rotating part and a track changing hydraulic cylinder, wherein the rotating part is vertically installed at the ends of the two track changing channel steels, and the track changing hydraulic cylinder is installed below the track changing channel steel, and the track changing channel steel is driven to rotate around the rotating part through the action of the track changing hydraulic cylinder.

[0016] According to a preferred embodiment, the pipe rod conveyor also includes a fixed sliding mechanism, which is installed on the frame, and the fixed sliding mechanism includes a sliding trolley, a connecting pin and a sliding hydraulic cylinder, wherein the sliding hydraulic cylinder is used to drive the sliding trolley forward and backward, and the sliding trolley is connected to the pulley mechanism via the connecting pin, and when the pulley mechanism rises and falls with the lifting mechanism, the pulley mechanism rotates through the connecting pin, so that the angle between the pulley mechanism and the sliding trolley can change with the rise and fall of the pulley mechanism.

[0017] The pipe-rod conveyor provided by the present invention has at least the following beneficial technical effects:

[0018] The pipe-rod conveyor of the present invention comprises a feeding clamping mechanism and a pulley clamping mechanism, which can be used to clamp the pipe column and / or the sucker rod, and through the action of the pulley mechanism, the pipe column and / or the sucker rod can be pushed to move in the horizontal direction, thereby realizing the transportation of the pipe column and / or the sucker rod. That is, the pipe-rod conveyor of the present invention can realize the transportation of the sucker rod, realize the multi-function of one machine, meet the requirements of the working conditions, and solve the technical problem that the pipe-rod conveyor in the prior art has no sucker rod transportation function, and still uses manual operation to drag the sucker rod to the pipe rack, which is labor-intensive.

[0019] In addition, the pipe-rod conveyor of the preferred technical solution of the present invention also has the following beneficial technical effects:

[0020] The pulley mechanism of the preferred technical solution of the present invention can move forward with the advancement of the pipe string and / or the sucker rod, and move backward with the retreat of the pipe string and / or the sucker rod through the chain transmission mechanism, thereby eliminating the sliding between the pipe string and / or the sucker rod and the slide groove, so that the pipe string and / or the sucker rod and the slide groove remain relatively still, thereby protecting the pipe string thread. That is, the preferred technical solution of this embodiment solves the technical problem that the existing pipe-rod conveyor mostly uses a V-shaped slide groove, and when the pipe string is lifted or lowered, the pipe string and the slide groove slide, causing the pipe string thread to be easily worn.

[0021] In the pipe-rod conveyors used in oil fields, the pipe column is often placed directly in a V-shaped chute; or the pipe column is often clamped directly. Since there is no rotating shaft, it is impossible to realize that the clamping part changes with the angle of the pipe column during the lifting process of the pipe column. The pulley clamping mechanism of the preferred technical solution of the present invention installs a rotating bearing and a rotating shaft in the pulley clamping mechanism, which can not only ensure the horizontal clamping of the pipe column and / or the sucker rod, but also realize a 360° longitudinal rotation to meet the random changes of the angle during the operation. It solves the technical problem in the prior art that during the lifting process of the pipe column, the angle of the pipe column with the conveyor chute changes continuously between 0 and 90° as the traveling block hook is lifted, but the currently commonly used pipe-rod conveyors cannot realize the clamping of the pipe column with the angle changing.

[0022] The pipe-rod conveyors used in existing oil fields generally use two hydraulic cylinders to realize the lifting mechanism and the forward mechanism respectively, which causes the lifting and the forward movement to not be realized synchronously during the operation, increasing the operation time. The track-changing mechanism of the preferred technical solution of the present invention utilizes the principle of track inclination to ensure that the lifting mechanism can realize lifting synchronously while moving forward, which can not only save hydraulic cylinders and reduce the overall dimensions, but also shorten the working time and improve the working efficiency. That is, the preferred technical solution of this embodiment solves the technical problem that the pipe-rod conveyors in the prior art mostly use a four-bar linkage or a scissor fork mechanism for lifting, which cannot realize the synchronization of the lifting action and the forward movement, resulting in long operation time and low efficiency through the effect of the track-changing mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a first schematic diagram of a preferred embodiment of the pipe and rod conveyor of the present invention;

[0025] Figure 2 is a second schematic diagram of a preferred embodiment of the pipe and rod conveyor of the present invention;

[0026] Figure 3 It is a schematic diagram of a preferred embodiment of the feeding and clamping mechanism of the present invention;

[0027] Figure 4 It is a schematic diagram of a preferred embodiment of the lifting mechanism of the present invention;

[0028] Figure 5 It is a schematic diagram of a preferred embodiment of the pulley clamping mechanism of the present invention;

[0029] Figure 6 It is a schematic diagram of a preferred embodiment of the track changing mechanism of the present invention;

[0030] Figure 7 It is a schematic diagram of a preferred embodiment of the fixed sliding mechanism of the present invention.

[0031] In the figure: 1. frame; 2. feeding clamping mechanism; 21. round tube; 22. feeding clamping hook; 221. first hook; 222. second hook; 23. clamping cylinder; 24. feeding cylinder; 3. lifting mechanism; 31. slideway; 32. sprocket; 33. hydraulic motor; 34. clutch; 4. pulley mechanism; 5. pulley clamping mechanism; 51. clamping crank arm; 52. clamping plate; 53. clamping cylinder; 54. rotating bearing seat; 55. rotating shaft; 56. pipe; 6. track changing mechanism; 61. track changing channel steel; 62. rotating part; 63. track changing cylinder; 7. fixed sliding mechanism; 71. sliding trolley; 711. roller; 72. connecting pin. DETAILED DESCRIPTION

[0032] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0033] The following is attached to the instruction manual Figures 1 to 7 The pipe-rod conveyor of this embodiment will be described in detail.

[0034] The pipe and rod conveyor of this embodiment includes a frame 1, a feeding clamping mechanism 2 installed on the frame 1, a lifting mechanism 3, a pulley mechanism 4, a pulley clamping mechanism 5 and a track changing mechanism 6. Figure 1 and Figure 2 As shown. Among them, the feeding clamping mechanism 2 is used to clamp the pipe string and / or the sucker rod, and transport the pipe string and / or the sucker rod to the pulley clamping mechanism 5, and clamp the pipe string and / or the sucker rod through the pulley clamping mechanism 5. The lifting mechanism 3 is installed on the track changing mechanism 6, so that the lifting mechanism 3 can increase its height while moving forward. The pulley mechanism 4 is installed in the slide groove 31 of the lifting mechanism 3, and the pulley mechanism 4 can move in the horizontal direction in the slide groove 31 of the lifting mechanism 3. The pulley clamping mechanism 5 is installed in the pulley mechanism 4, so that the pulley clamping mechanism 5 can drive the pipe string and / or the sucker rod clamped on the pulley clamping mechanism 5 to move in the horizontal direction through the movement of the pulley mechanism 4 in the horizontal direction.

[0035] The pipe-rod conveyor of this embodiment includes a feeding clamping mechanism 2 and a pulley clamping mechanism 5. The feeding clamping mechanism 2 and the pulley clamping mechanism 5 can be used to clamp the pipe column and / or the sucker rod, and through the action of the pulley mechanism 4, the pipe column and / or the sucker rod can be pushed to move in the horizontal direction, thereby realizing the transportation of the pipe column and / or the sucker rod. That is, the pipe-rod conveyor of this embodiment can realize the transportation of the sucker rod, realize the multi-functionality of one machine, meet the requirements of the working conditions, and solve the technical problem that the pipe-rod conveyor in the prior art has no sucker rod transportation function, and still uses manual operation to drag the sucker rod to the pipe rack, which is labor-intensive.

[0036] According to a preferred embodiment, the feeding clamping mechanism 2 includes a round tube 21, a feeding clamping hook 22, a clamping cylinder 23 and a feeding cylinder 24. Figure 3As shown. Among them, the round tube 21 is installed on the frame 1, one end of the feeding clamping hook 22 is fixed on the round tube 21, and the other end is used to clamp the pipe string and / or the sucker rod. The clamping cylinder 23 is installed on the clamping arm, and the clamping cylinder 23 is used to push the feeding clamping hook 22 to clamp the pipe string and / or the sucker rod. The feeding cylinder 24 is installed on the round tube 21, so that the round tube 21 is pushed to rotate by the extension and contraction of the feeding cylinder 24, so as to transport the pipe string and / or the sucker rod to the lifting mechanism 3 and the pulley mechanism 4. Preferably, the round tube 21 is welded to the frame 1 by a steel plate, one end of the feeding clamping hook 22 is welded to the round tube 21, and the feeding cylinder 24 is installed in the middle of the round tube 21. The feeding cylinder 24 is pushed to rotate by the extension and contraction of the feeding cylinder 24, so as to transport the pipe string and / or the sucker rod from the ground to the lifting mechanism 3 and the pulley mechanism 4 of the conveyor.

[0037] The feeding clamping hook 22 of the preferred technical solution of this embodiment adopts the scissor fork principle, and uses the clamping hydraulic cylinder 23 to push the feeding clamping hook 22 to clamp the pipe string and / or the sucker rod. That is, the feeding clamping mechanism 2 uses the feeding clamping hook 22 to clamp the pipe string and / or the sucker rod, and through rotation, the pipe string and / or the sucker rod are transported to the lifting mechanism 3 and the pulley mechanism 4, so as to realize the transportation of the pipe string and / or the sucker rod from the oil pipe rack to the conveyor.

[0038] According to a preferred embodiment, one end of the feeding clamping hook 22 for clamping the tubing string and / or the sucker rod has a first hook 221 and a second hook 222, and the ends of the first hook 221 and the second hook 222 cross each other, so that the tubing string and / or the sucker rod are clamped on both sides by the first hook 221 and the second hook 222, or the tubing string and / or the sucker rod are clamped in the gap formed by the intersection of the first hook 221 and the second hook 222, such as Figure 2 or Figure 3 shown.

[0039] The loading clamping hook 22 of the preferred technical solution of this embodiment is used to clamp one end of the pipe string and / or the sucker rod, and has a first hook 221 and a second hook 222. It adopts the cross-clamping principle so that the pipe string and / or the sucker rod can be firmly clamped to ensure that the pipe string and / or the sucker rod will not slide in winter or when there is oil pollution, thereby ensuring that the pipe string and / or the sucker rod can be safely loaded.

[0040] According to a preferred embodiment, two sets of feeding and clamping mechanisms 2 are installed on one side of the pipe-rod conveyor, and the two sets of feeding and clamping mechanisms 2 are used to clamp the pipe string and / or the sucker rod at the same time. Two sets of feeding and clamping mechanisms 2 are installed on one side of the pipe-rod conveyor of the preferred technical solution of this embodiment, and the two sets of feeding and clamping mechanisms 2 are used to clamp the pipe string and / or the sucker rod at the same time, ensuring that the pipe string and / or the sucker rod are firmly clamped.

[0041] According to a preferred embodiment, the slideway 31 of the lifting mechanism 3 is formed by welding two sets of I-beams. Sprockets 32 are respectively installed at both ends of the slideway 31, and the two sets of sprockets 32 are connected by a chain, and one set of sprockets 32 is installed with a hydraulic motor 33 and a clutch 34, so that the pulley mechanism 4 can move forward and backward in the slideway 31 through the action of the hydraulic motor 33 and the clutch 34. Figure 4 Preferably, the slide 31 is a U-shaped structure. The U-shaped slide 31 is the track for the pulley mechanism 4 to slide, and is also the bearing component during the lifting process of the pipe string and the sucker rod. A chain transmission mechanism is installed on the slide 31 to ensure the forward and backward movement of the pulley mechanism 4.

[0042] The pulley mechanism 4 of the preferred technical solution of this embodiment realizes the advancement of the pipe string and / or the sucker rod and the retreat of the pipe string and / or the sucker rod through the chain transmission mechanism, thereby eliminating the sliding between the pipe string and / or the sucker rod and the slide groove 31, so that the pipe string and / or the sucker rod and the slide groove 31 remain relatively still, thereby protecting the pipe string thread. That is, the preferred technical solution of this embodiment solves the technical problem that the existing pipe-rod conveyor mostly uses a V-shaped slide groove, and when the pipe string is lifted or lowered, the pipe string and the slide groove slide, causing the pipe string thread to be easily worn.

[0043] According to a preferred embodiment, the pulley clamping mechanism 5 includes a clamping crank arm 51, a clamping plate 52, a clamping cylinder 53, a rotating bearing seat 54, a rotating bearing and a rotating shaft 55. Figure 5 As shown. The pulley clamping mechanism 5 also includes a pipe 56, such as Figure 5 As shown. The rotating shaft 55 and the rotating bearing seat 54 are installed in the longitudinal direction of the clamping plate 52, the rotating bearing is installed in the rotating bearing seat 54, and the rotating bearing is installed on the rotating shaft 55, the clamping plate 52 and the rotating shaft 55 are fixed as one, and the rotating shaft 55 can rotate in the vertical direction, so that the pulley clamping mechanism 5 can drive the clamping crank arm 51 to move horizontally and push the clamping plate 52 to move to clamp the pipe column and / or the sucker rod under the action of the clamping liquid cylinder 53, while maintaining the rotation in the vertical direction. Preferably, the pulley clamping mechanism 5 includes two groups of clamping crank arms 51 and two groups of clamping plates 52.

[0044] The pulley clamping mechanism 5 of the preferred technical solution of this embodiment is installed in the pulley mechanism 4, and a rotating bearing and a rotating shaft 55 are installed in the pulley clamping mechanism 5 to ensure that the longitudinal rotation is achieved during the horizontal clamping process of the pipe column and / or the sucker rod. Specifically, the pulley clamping mechanism 5 is composed of two groups of clamping crank arms 51 and a clamping plate 52, and a bearing and a rotating shaft 55 are installed in the longitudinal direction of the clamping plate 52. When the clamping hydraulic cylinder 53 is extended and retracted, the clamping crank arm 51 is pushed to rotate, similar to a scissors structure, thereby pushing the clamping plate 52 to move, and when the pipe column and / or the sucker rod are clamped, the longitudinally installed bearing can still achieve rotation.

[0045] In the pipe-rod conveyors used in oil fields, the pipe column is often placed directly in a V-shaped chute; or the pipe column is often clamped directly. Since there is no rotating shaft, it is impossible to realize that the clamping part changes with the angle of the pipe column during the lifting process of the pipe column. The pulley clamping mechanism 5 of the preferred technical solution of this embodiment has a rotating bearing and a rotating shaft 55 installed in the pulley clamping mechanism 5, which can not only ensure the horizontal clamping process of the pipe column and / or the sucker rod, but also realize a 360° rotation in the longitudinal direction to meet the random changes in angles during the operation. It solves the technical problem in the prior art that during the lifting process of the pipe column, the angle of the pipe column with the conveyor chute changes continuously between 0 and 90° as the traveling block hook is lifted, but the currently commonly used pipe-rod conveyors cannot realize the pipe column clamping with the angle change.

[0046] According to a preferred embodiment, the track changing mechanism 6 includes two track changing channel steels 61, the track changing channel steels 61 are inclined tracks, and the lifting mechanism 3 is installed in the track changing channel steels 61, so that the lifting mechanism 3 can move in the horizontal direction and the vertical direction at the same time. Figure 1 Or 6. Preferably, the track-changing mechanism 6 further includes a rotating part 62 and a track-changing cylinder 63, as shown in FIG. Figure 1 Or as shown in FIG6 . Among them, the rotating part 62 is vertically installed at the ends of the two track-changing channel steels 61 , and the track-changing hydraulic cylinder 63 is installed below the track-changing channel steel 61 , and the track-changing hydraulic cylinder 63 drives the track-changing channel steel 61 to rotate around the rotating part 62 .

[0047] The track-changing mechanism 6 of the preferred technical solution of this embodiment includes two inclined track-changing channel steels 61. By utilizing the track inclination principle, it can ensure that the lifting mechanism 3 can be lifted synchronously while moving forward. The track-changing mechanism 6 of the preferred technical solution of this embodiment is welded from two channel steels. A track-changing hydraulic cylinder 63 is installed under the channel steel. The track-changing hydraulic cylinder 63 is extended or retracted to realize the rotation of the track-changing channel steel 61 around the rotating part 62. When the track-changing hydraulic cylinder 63 and the track-changing channel steel 61 stay at different heights, the track height can be changed. The lifting mechanism 3 is installed inside the track-changing channel steel 61 of the track-changing mechanism 6. As the track height is different, when the lifting mechanism 3 moves forward, the lifting of the lifting mechanism 3 at different heights is realized along the tracks at different heights.

[0048] The pipe-rod conveyors used in existing oil fields generally use two hydraulic cylinders to realize the lifting mechanism and the forward mechanism respectively, which causes the lifting and the forward movement to not be realized synchronously during the operation, increasing the operation time. The track-changing mechanism 6 of the preferred technical solution of this embodiment uses the principle of track inclination to ensure that the lifting mechanism 3 can realize lifting synchronously while moving forward, which can not only save hydraulic cylinders and reduce the overall dimensions, but also shorten the working time and improve the working efficiency. That is, the preferred technical solution of this embodiment solves the technical problem that the pipe-rod conveyors in the prior art mostly use four-bar linkage or scissor fork mechanism for lifting, which cannot realize the synchronization of lifting action and forward movement, resulting in long operation time and low efficiency through the function of track-changing mechanism 6.

[0049] According to a preferred embodiment, the pipe rod conveyor further comprises a fixed sliding mechanism 7, which is mounted on the frame 1. The fixed sliding mechanism 7 of the preferred technical solution of this embodiment is used to ensure that the lifting mechanism can realize rotation during the forward movement. Preferably, the fixed sliding mechanism 7 comprises a sliding trolley 71, a connecting pin 72 and a sliding hydraulic cylinder, such as Figure 7 As shown. The sliding cylinder is used to drive the sliding trolley 71 forward and backward, and the sliding trolley 71 is connected to the pulley mechanism 4 via the connecting pin 72. When the pulley mechanism 4 is raised and lowered with the lifting mechanism 3, the pulley mechanism 4 rotates through the connecting pin 72, so that the angle between the pulley mechanism 4 and the sliding trolley 71 can change with the raising and lowering of the pulley mechanism 4. Preferably, there is a roller 711 on the sliding trolley 71, and the sliding trolley 71 can move forward or backward by rolling the roller 711.

[0050] The fixed sliding mechanism 7 of the preferred technical solution of this embodiment eliminates the sliding between the pipe string and / or the sucker rod and the slide groove 31 by setting a sliding trolley 71, so that the pipe string and / or the sucker rod and the slide groove 31 remain relatively still, thereby protecting the pipe string thread.

[0051] According to a preferred embodiment, the frame 1 is the bearing body of the entire conveyor, and all components are installed on the frame 1, which can ensure the overall stability of the conveyor. The power system of the conveyor, hydraulic working valves, etc. are also installed on the frame 1, and an external hydraulic station or a well repair machine hydraulic pump can provide control and power guarantee for the operation of the conveyor. Under the control of the PLC, the hydraulic solenoid valve can be manually or remotely controlled to realize the sequential operation of the solenoid valve, thereby ensuring the normal operation of the hydraulic cylinders of each mechanism. Preferably, the driving device of each mechanism is not limited to hydraulic drive, but can also be pneumatic drive or electric motor drive, etc.

[0052] According to a preferred embodiment, the process of conveying a pipe string and / or a sucker rod by the pipe-rod conveyor of this embodiment includes the following steps:

[0053] (1) Adjust the track changing mechanism 6 according to the lifting height requirement so that the track changing mechanism 6 forms a certain angle;

[0054] (2) The pipe string and / or the sucker rod are placed on the loading clamping mechanism 2, and the loading hydraulic cylinder 24 drives the round tube 21 to rotate, so that the pipe string and / or the sucker rod rotate and rise, and finally the pipe string and / or the sucker rod are placed in the pulley clamping mechanism 5;

[0055] (3) The pulley clamping mechanism 5 clamps the pipe string and / or the sucker rod;

[0056] (4) The lifting mechanism 3 moves along the inclined track changing channel steel 61 of the track changing mechanism 6, achieving synchronous lifting;

[0057] (5) The pulley mechanism 4 moves forward, pushing the pulley clamping mechanism 5 inside which the tubing string and / or the sucker rod are clamped to move forward together, until the tubing string and / or the sucker rod are pushed to the specified position.

[0058] The pipe-rod conveyor of this embodiment has a pumping rod conveying function by adopting a feeding clamping mechanism 2 and a pulley clamping mechanism 5; by adding a sliding trolley 71, the pipe column thread can be protected; by adding a rotary bearing and a rotary shaft 55, the pulley clamping mechanism 5 can rotate with the pulley during operation; and by designing a track changing mechanism 6, the inclined track is used to ensure that the lifting mechanism 3 can lift while moving forward.

[0059] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A pipe and rod conveyor, characterized in that: It comprises a frame (1), a feeding clamping mechanism (2) mounted on the frame (1), a lifting mechanism (3), a pulley mechanism (4), a pulley clamping mechanism (5) and a track changing mechanism (6), wherein: The feeding clamping mechanism (2) is used to clamp the pipe string and / or the sucker rod, and transport the pipe string and / or the sucker rod to the pulley clamping mechanism (5), and the pipe string and / or the sucker rod are clamped by the pulley clamping mechanism (5); The lifting mechanism (3) is mounted on the track changing mechanism (6), so that the lifting mechanism (3) can increase its height while moving forward; The pulley mechanism (4) is installed in the slide groove (31) of the lifting mechanism (3), and the pulley mechanism (4) is capable of moving in the slide groove (31) of the lifting mechanism (3) along a horizontal direction; The pulley clamping mechanism (5) is installed in the pulley mechanism (4), so that the pulley clamping mechanism (5) can drive the pipe string and / or the sucker rod clamped by the pulley clamping mechanism (5) to move in the horizontal direction through the movement of the pulley mechanism (4) in the horizontal direction; The feeding clamping mechanism (2) comprises a round tube (21), a feeding clamping hook (22), a clamping liquid cylinder (23) and a feeding liquid cylinder (24), wherein: The round tube (21) is mounted on the frame (1); one end of the feeding clamping hook (22) is fixed on the round tube (21), and the other end is used to clamp the pipe column and / or the sucker rod; The clamping cylinder (23) is installed on the clamping arm, and the clamping cylinder (23) is used to push the loading clamping hook (22) to clamp the pipe column and / or the sucker rod; The feeding liquid cylinder (24) is installed on the round tube (21) so as to push the round tube (21) to rotate by extending and retracting the feeding liquid cylinder (24) so ​​as to transport the pipe string and / or the sucker rod into the lifting mechanism (3) and the pulley mechanism (4); The loading clamping hook (22) is used to clamp one end of a pipe column and / or a sucker rod and has a first hook (221) and a second hook (222), and the ends of the first hook (221) and the second hook (222) cross each other. The first curved hook (221) and the second curved hook (222) are used to clamp both sides of the pipe string and / or the sucker rod, or the pipe string and / or the sucker rod are clamped in a gap formed by the first curved hook (221) and the second curved hook (222) intersecting each other; The pulley clamping mechanism (5) comprises a clamping crank arm (51), a clamping plate (52), a clamping fluid cylinder (53), a rotating bearing seat (54), a rotating bearing and a rotating shaft (55), wherein: The rotating shaft (55) and the rotating bearing seat (54) are installed in the longitudinal direction of the clamping plate (52), the rotating bearing is installed in the rotating bearing seat (54), and the rotating bearing is installed on the rotating shaft (55). The clamping plate (52) is fixed integrally with the rotating shaft (55), and the rotating shaft (55) can rotate in the vertical direction, so that the pulley clamping mechanism (5) can drive the clamping arm (51) to move laterally and push the clamping plate (52) to move to clamp the pipe column and / or the sucker rod under the action of the clamping hydraulic cylinder (53), while maintaining the rotation in the vertical direction; The track changing mechanism (6) comprises two track changing channel steels (61), the track changing channel steels (61) are inclined tracks, and the lifting mechanism (3) is installed in the track changing channel steels (61), so that the lifting mechanism (3) can move in the horizontal direction and the vertical direction at the same time.

2. The pipe and rod conveyor according to claim 1, characterized in that: Two sets of the loading and clamping mechanisms (2) are installed on one side of the pipe-rod conveyor, and the two sets of the loading and clamping mechanisms (2) are used to clamp the pipe column and / or the sucker rod at the same time.

3. The pipe and rod conveyor according to claim 1, characterized in that: The slide groove (31) of the lifting mechanism (3) is formed by welding two sets of I-beams. Sprockets (32) are respectively installed at both ends of the slide groove (31), and the two groups of sprockets (32) are connected by a chain, and one group of the sprockets (32) is installed with a hydraulic motor (33) and a clutch (34), so that the pulley mechanism (4) can move forward and backward in the slide groove (31) through the action of the hydraulic motor (33) and the clutch (34).

4. The pipe and rod conveyor according to claim 1, characterized in that: The pulley clamping mechanism (5) comprises two groups of clamping crank arms (51) and two groups of clamping plates (52).

5. The pipe and rod conveyor according to claim 1, characterized in that: The track change mechanism (6) further comprises a rotating part (62) and a track change hydraulic cylinder (63), wherein: The rotating part (62) is vertically mounted on the ends of the two track-changing channel steels (61). The track-changing hydraulic cylinder (63) is installed below the track-changing channel steel (61), and the track-changing channel steel (61) is driven to rotate around the rotating part (62) through the action of the track-changing hydraulic cylinder (63).

6. The pipe and rod conveyor according to claim 1, characterized in that: It also includes a fixed sliding mechanism (7), which is mounted on the frame (1), and includes a sliding trolley (71), a connecting pin (72) and a sliding cylinder, wherein: The sliding hydraulic cylinder is used to drive the sliding trolley (71) forward and backward, and the sliding trolley (71) is connected to the pulley mechanism (4) via the connecting pin (72). When the pulley mechanism (4) is raised or lowered along with the lifting mechanism (3), the pulley mechanism (4) is rotated via the connecting pin (72), so that the angle between the pulley mechanism (4) and the sliding trolley (71) can change along with the raising or lowering of the pulley mechanism (4).

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