Device for handling pipes

Abstract

The present invention belongs to the technical field of pipeline hoisting and transportation, and solves the problems of low grasping efficiency, too many parts, relatively complex structure, and inconvenient maintenance after damage in pipeline handling devices. A device for handling pipe fittings is provided, including a hanger and a clamping and placing control assembly. When grasping, the hanger is pressed down to drive the slide lock to slide downward and slide the slide pin into the lock groove of the slide lock, and then the hanger is pulled up to drive the slide pin to slide upward along the slide, and the pull rope is tightened and drives the small arm and the arm end to tighten inward to achieve the clamping of the pipe; when lowering, the hanger is pressed down to drive the slide pin to slide to the lower end of the slide, and the pull rope is loosened and drives the small arm and the arm end to relax outward to achieve the lowering of the pipe, and the hanger is continued to be pressed down to separate the slide lock from the slide pin. The device has a simple structure, a small number of parts, adopts a fully mechanical action, and is not easy to be damaged. The internal configuration of the slide lock is used to cooperate with the slide pin and the pull rope to achieve fast, accurate, and stable automatic clamping of pipe fittings, effectively improving the handling efficiency of pipe fittings.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline hoisting and transportation, and in particular relates to a device for transporting pipe fittings. Background Art

[0002] Hoisting refers to the installation and positioning of equipment using a lifting mechanism. During the inspection or maintenance process, various lifting machines are used to lift equipment, workpieces, tools, materials, etc. to change their positions. During the pipe laying and welding construction work, a large number of pipes need to be transported over short distances and their positions need to be fine-tuned before welding. Hoisting devices are needed to hoist them to the appropriate position first.

[0003] After searching, Chinese patent CN111532968A discloses a building pipeline hoisting device, including a hoisting box and a mounting frame, the mounting frame is located on the top of the hoisting box, two mobile hoisting claws are arranged below the hoisting box, the two mobile hoisting claws are symmetrically arranged and slidably connected to the hoisting box, a controller and a driving motor are arranged on both sides of the hoisting box, the interior of the hoisting box is a hollow driving chamber, a double-threaded rod connected to the driving motor is arranged in the driving chamber, the double-threaded rod has two sets of external threads in opposite directions, two driving plates are sleeved on the double-threaded rod and are rotatably connected to the double-threaded rod, a threaded hole is arranged on the driving plate, the lower end of the driving plate extends out of the hoisting box and is fixedly connected to the mobile hoisting claw, a guide groove is opened on the bottom surface of the hoisting box, and the driving plate is slidably connected to the guide groove;

[0004] The mobile lifting claw includes a mounting plate and a claw body. There are two claw bodies at the bottom of each mounting plate and they are located at the front and rear ends of the bottom of the mounting plate. The claw body includes an integrally formed vertical plate and an inclined plate. The cross-section of the inclined plate is triangular. A groove is opened on the inner side of the vertical plate, and an expansion air bag is arranged in the groove. An air pump is fixed on the back of the vertical plate. The air pump is connected to an external air pipe and an internal air pipe. The internal air pipe is connected to the expansion air bag, and a control valve is arranged at the connection between the internal air pipe and the expansion air bag.

[0005] The pipe lifting device uses a motor to drive the mobile lifting claw to grasp the pipe. There is a certain lag in the movement, resulting in low grasping efficiency. In addition, the device has too many parts and a relatively complex structure, which makes it inconvenient to maintain after damage occurs. Summary of the invention

[0006] In view of the shortcomings of existing pipeline handling devices, such as low grasping efficiency, excessive parts, relatively complex structure, and inconvenient maintenance after damage, the purpose of the present invention is to provide a device for handling pipe fittings. When grasping, the lifting rod is pressed down to drive the sliding lock to slide downward and slide the sliding pin into the locking groove of the sliding lock, and then the lifting rod is pulled up to drive the sliding pin to slide upward along the slide, the pull rope is tightened and drives the small arm and the arm end to tighten inward to clamp the pipeline; when lowering, the lifting rod is pressed down to drive the sliding pin to the lower end of the slide, the pull rope is loosened and drives the small arm and the arm end to relax outward to lower the pipeline, and the lifting rod is continued to be pressed down to separate the sliding lock and the sliding pin.

[0007] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a device for handling pipe fittings, characterized in that it includes a hanger and a clamping and placing control assembly, the hanger includes an upper slide, a big arm, a small arm and an arm end which are arranged in sequence from top to bottom, the upper slide is fixed to the upper end of the big arm, and the two ends of the small arm are respectively hinged to the big arm and the arm end; the clamping and placing control assembly includes a hanger rod, a sliding lock, a sliding pin and a pull rope, one end of the hanger rod extends into the upper slide and is rotatably connected with the sliding lock located in the upper slide through a pin shaft, guide grooves for vertical sliding are arranged on the two side walls of the upper slide at positions corresponding to the pin shafts, and a vertical slide is fixed to the lower part of the upper slide. The sliding pin is slidably arranged on the slide and its two ends extend out of both sides of the slide. One end of the pull rope is connected to the arm end, and the other end passes through the inner side of the hanger and is connected to the sliding pin. The sliding lock and the pull rope are both symmetrically arranged relative to the slide. When grabbing, the suspension rod is pressed down to drive the sliding lock to slide downward and slide the sliding pin into the locking groove of the sliding lock. The suspension rod is then pulled up to drive the sliding pin to slide upward along the slide. The pull rope is tightened and drives the forearm and the arm end to tighten inward to clamp the pipeline. When lowering, the suspension rod is pressed down to drive the sliding pin to the lower end of the slide. The pull rope is loosened and drives the forearm and the arm end to relax outward to lower the pipeline. The suspension rod is continued to be pressed down to separate the sliding lock from the sliding pin.

[0008] Preferably, the sliding lock includes an upper guide block, a lower guide block and a side baffle plate for connecting the two, the upper part of the upper guide block is rotatably connected to the pin shaft, and the lower part has a V-shaped fork with an opening facing downward; the upper part of the lower guide block is a V-shaped fork with an opening facing upward, and the lower part is a first guiding inclined surface for facilitating the sliding pin to enter the lock groove; the upper guide block and the lower guide block are both arranged in a plug-in shape and form a sliding-in channel and a sliding-out channel for the sliding pin, and the side baffle plate is located on the side away from the slide.

[0009] Preferably, the V-shaped fork of the upper guide block includes an upper short fork and an upper long fork at an acute angle, and the V-shaped fork of the lower guide block includes a lower short fork and a lower long fork at an acute angle;

[0010] The lower short fork is located between the upper short fork and the upper long fork, and the upper end of the lower short fork has a second guiding inclined surface for facilitating the sliding pin to slide in, and the second guiding inclined surface is parallel to the inner side surface of the upper short fork, and the entrance of the sliding channel is formed between the two; the upper long fork is inserted between the lower short fork and the lower long fork, and the inner side surface of the upper long fork is parallel to the inner side surface of the lower short fork and forms a sliding channel; the inner bottom surface surrounded by the lower short fork and the lower long fork serves as a locking groove of the sliding lock; the bottom end of the upper long fork has a third guiding inclined surface for facilitating the sliding pin to slide out, and the middle and upper part of the outer side surface of the upper long fork is parallel to the middle and upper part of the inner side surface of the lower long fork and forms a sliding channel; the upper long fork and the front side of the upper part of the upper guide block form an obtuse transition, and the outer side of the upper end of the lower long fork has a fourth guiding inclined surface for facilitating the sliding pin to slide out along it.

[0011] Preferably, a clamping ring is provided at a position on the sliding pin that is in contact with both sides of the slide frame to prevent the sliding pin from moving left and right, and a connecting tube for connecting and fixing one end of a pull rope is provided at the lower end of the clamping ring.

[0012] Preferably, the upper arm, the lower arm and the arm end are all frame structures with reinforcing ribs inside, and there are adjustable gaps between the two sides of the lower arm and the upper arm and the arm end for easy tightening. The upper arm, the lower arm and the arm end are two symmetrically arranged relative to the slide.

[0013] Preferably, the side baffle of the slide lock fits the inner wall of the upper slide seat, an adjustment gap is left in the upper slide seat to facilitate the rotation of the slide lock, the two slide locks are connected as a whole through a pin shaft, and the lower end of the suspension rod has a rotating sleeve horizontally mounted on the pin shaft.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. When the device grabs the pipe fittings, the sliding lock is driven downward by pressing the boom and the sliding pin is slid into the lock groove of the sliding lock. The boom is then pulled up to drive the sliding pin to slide upward along the slide. The pull rope is tightened and drives the small arm and the arm end to tighten inward to clamp the pipe. When lowering the pipe fittings, the sliding pin is driven to slide to the lower end of the slide by pressing the boom, the pull rope is loosened and drives the small arm and the arm end to relax outward to lower the pipe, and the boom is pressed down again to separate the sliding lock and the sliding pin.

[0016] 2. This device utilizes the special internal configuration of the slide lock in conjunction with the slide pin and the pull rope to achieve fast, accurate and stable automatic clamping of pipes, effectively improving the handling efficiency of pipes.

[0017] 3. The device has a simple structure, a small number of parts, adopts a fully mechanical action, does not require the installation of a power auxiliary system, is not prone to damage, and has a low and convenient frequency of subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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 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.

[0019] Figure 1 1 is a schematic elevation diagram of the overall structure of this embodiment;

[0020] Figure 2 is a vertical cross-sectional view of this embodiment;

[0021] Figure 3 Schematic diagram of the detailed structure of the upper slide seat in this embodiment;

[0022] Figure 4 This is a flow chart of the actions of the sliding pin, the upper guide block and the lower guide block when the pipe is clamped in this embodiment;

[0023] Figure 5 This is a flow chart of the actions of the sliding pin, the upper guide block and the lower guide block when the pipeline is lowered in this embodiment.

[0024] In the figure: 1.1-upper slide; 1.11-guide groove; 1.2-upper arm; 1.3-forearm; 1.4-arm end; 2.1-suspender rod; 2.11-rotating sleeve; 2.2-slide lock; 2.21-upper guide block; 2.211-upper short fork; 2.212-upper long fork; 2.22-lower guide block; 2.221-lower short fork; 2.222-lower long fork; 2.23-side baffle; 2.3-slide pin; 2.4-pull rope; 2.5-pin shaft; 2.6-slide; 2.7-clamp ring; 2.8-connecting pipe. DETAILED DESCRIPTION

[0025] In conjunction with the drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented, so they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention. It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0027] The present invention provides an embodiment:

[0028] like Figures 1 to 3 As shown, a device for pipe handling includes a hanger and a clamping and placing control assembly, the hanger includes an upper slide 1.1, a big arm 1.2, a small arm 1.3 and an arm end 1.4 which are arranged in sequence from top to bottom, the upper slide 1.1 is a rectangular box-shaped structure with an open lower end and fixed to the upper end of the big arm 1.2, the big arm 1.2, the small arm 1.3 and the arm end 1.4 are all frame structures with reinforcing ribs arranged inside, the two ends of the small arm 1.3 are respectively hinged to the big arm 1.2 and the arm end 1.4, and there is an adjustable gap between the two sides of the small arm 1.3 and the big arm 1.2 and the arm end 1.4 for easy tightening, and the big arm 1.2, the small arm 1.3 and the arm end 1.4 are all two symmetrically arranged relative to the slide 2.6;

[0029] The clamping and releasing control assembly includes a suspension rod 2.1, a slide lock 2.2, a slide pin 2.3 and a pull rope 2.4. One end of the suspension rod 2.1 extends into the upper slide 1.1 and is rotatably connected to the slide lock 2.2 located in the upper slide 1.1 through a pin shaft 2.5. Guide grooves 1.11 for vertical sliding are arranged on the two side walls of the upper slide 1.1 corresponding to the positions of the pin shaft 2.5. A vertical slide 2.6 is fixed to the lower part of the upper slide 1.1. The slide 2.6 is connected to the bottom end of the horizontal section of the boom 1.2. The slide pin 2.3 is slidably arranged on the slide 2.6 and both ends extend out of both sides of the slide 2.6. One end of the pull rope 2.4 is connected to the arm end 1.4, and the other end passes through the inner side of the suspension rod and is connected to the slide pin 2.3. The slide lock 2.2 and the pull rope 2.4 are both symmetrically arranged relative to the slide 2.6.

[0030] When grabbing pipe fittings, after the horizontal section of the boom 1.2 is pressed against the upper part of the pipe fittings, the boom 2.1 is pressed downward to drive the slide lock 2.2 to slide downward and the slide pin 2.3 to slide into the lock groove of the slide lock 2.2, and then the boom 2.1 is pulled up to drive the slide pin 2.3 to slide upward along the slide 2.6, the pull rope 2.4 is tightened and drives the small arm 1.3 and the arm end 1.4 to tighten inward to clamp the pipe; when lowering the pipe fittings, after the pipe fittings fall to the ground, the boom 2.1 is pressed downward to drive the slide pin 2.3 to slide to the lower end of the slide 2.6, the pull rope 2.4 is loosened and drives the small arm 1.3 and the arm end 1.4 to relax outward to lower the pipe, and the boom 2.1 is continued to be pressed down to separate the slide lock 2.2 from the slide pin 2.3.

[0031] The sliding lock 2.2 includes an upper guide block 2.21, a lower guide block 2.22 and a side baffle 2.23 for connecting the two. The upper part of the upper guide block 2.21 is rotatably connected to the pin shaft 2.5, and the lower part has a V-shaped fork with an opening facing downward; the upper part of the lower guide block 2.22 is a V-shaped fork with an opening facing upward, and the lower part is a first guiding inclined surface for facilitating the sliding pin 2.3 to be inserted into the lock groove; the upper guide block 2.21 and the lower guide block 2.22 are arranged in a plug-in shape and form a sliding-in channel and a sliding-out channel for the sliding pin 2.3, and the side baffle 2.23 is located on the side away from the slide 2.6.

[0032] In this embodiment, the V-shaped fork of the upper guide block 2.21 includes an upper short fork 2.211 and an upper long fork 2.212 at an acute angle, and the V-shaped fork of the lower guide block 2.22 includes a lower short fork 2.221 and a lower long fork 2.222 at an acute angle; the lower short fork 2.221 is located between the upper short fork 2.211 and the upper long fork 2.212, and the upper end of the lower short fork 2.221 has a second guiding slope for facilitating the sliding pin 2.3 to slide in, and the second guiding slope is parallel to the inner side surface of the upper short fork 2.211 and the entrance of the sliding channel is formed between the two; the upper long fork 2.212 is inserted into the lower short fork 2.221 and the lower long fork 2.22 2, the inner side surface of the upper long fork 2.212 and the inner side surface of the lower short fork 2.221 are parallel and form a sliding-in channel; the inner bottom surface formed by the lower short fork 2.221 and the lower long fork 2.222 serves as a locking groove of the sliding lock 2.2; the bottom end of the upper long fork 2.212 has a third guiding inclined surface for facilitating the sliding pin 2.3 to slide out, the middle and upper part of the outer side surface of the upper long fork 2.212 is parallel to the middle and upper part of the inner side surface of the lower long fork 2.222 and forms a sliding-out channel; the upper long fork 2.212 forms an obtuse-angle transition with the front face of the upper part of the upper guide block 2.21, and the outer side of the upper end of the lower long fork 2.222 has a fourth guiding inclined surface for facilitating the sliding pin 2.3 to slide out along it.

[0033] A snap ring 2.7 is provided on the sliding pin 2.3 at the position where it fits on both sides of the slide frame 2.6 to prevent the sliding pin 2.3 from moving left and right. A connecting pipe 2.8 for connecting and fixing one end of the pull rope 2.4 is provided at the lower end of the snap ring 2.7 to prevent the sliding lock 2.2 from interfering with the pull rope 2.4 during the movement and causing the device to get stuck. In order to ensure the compactness of the structure and limit the two sliding locks 2.2, the side baffle 2.23 of the sliding lock 2.2 fits with the inner wall of the upper slide seat 1.1, and an adjustment gap is left in the upper slide seat 1.1 to facilitate the rotation of the sliding lock 2.2. The two sliding locks 2.2 are connected as a whole through a pin shaft 2.5, and the lower end of the suspension rod 2.1 has a rotating sleeve 2.11 horizontally sleeved on the pin shaft 2.5.

[0034] Specific action principle:

[0035] like Figure 4 The figure shows the action flow chart of the sliding pin, the upper guide block and the lower guide block when the pipe is clamped, a1 is the initial state: at this time, the sliding pin 2.3 is located directly below the first guiding inclined surface of the lower guide block 2.2 (the first guiding inclined surface is the upper inclined surface with the slope facing the lower short fork 2.221); b1 is the state when the sliding pin 2.3 is in contact with the first guiding inclined surface: the downward pressure of the suspension rod 2.1 drives the sliding lock 2.2 to contact with the sliding pin 2.3; c1 is the state when the sliding pin 2.3 is in contact with the second guiding inclined surface (the second guiding inclined surface is the upper inclined surface with the slope facing the upper long fork 2.212): the suspension rod 2.1 continues to drive the sliding lock 2.2 to press down, and the sliding pin 2.3 moves relatively, along the first guiding inclined surface and the lower short fork 2.2. The outer side surface of the fork 2.221 reaches the second guide slope; d1 is the state when the sliding pin 2.3 contacts the bottom of the V-shaped fork groove of the upper guide block 2.21: the suspension rod 2.1 continues to drive the slide lock 2.2 to press down, and the sliding pin 2.3 moves relatively and enters the entrance of the sliding channel along the second guide slope; e1 is a state diagram of the sliding pin 2.3 reaching the bottom of the lock groove of the slide lock 2.2: the suspension rod 2.1 is pulled up to drive the slide lock 2.2 to move upward until the sliding pin 2.2 reaches the bottom of the lock groove; f1 is a state diagram of the suspension rod 2.1 driving the sliding pin 2.3 to slide upward along the slide 2.6: the suspension rod 2.1 is continued to be pulled up, the sliding pin slides upward along the slide, the pull rope is tightened and drives the forearm and the arm end to tighten inward to achieve the clamping of the pipeline.

[0036] like Figure 5The figure shows the action flow chart of the sliding pin, the upper guide block and the lower guide block when the pipeline is lowered. a2 is the state when the sliding pin 2.3 contacts the third guide slope after the pipe touches the ground (the third guide slope is the upper slope with the slope facing the lower long fork 2.222): after the pipe touches the ground, the downward pressing rod 2.1 drives the sliding lock 2.2 to move downward until the sliding pin 2.3 moves relatively to the third guide slope; b2 is the state of the sliding pin 2.3 when it slides out of the channel: the rod 2.1 continues to drive the sliding lock 2.3 to press down, and the sliding pin 2.3 enters the slide-out channel along the third guide slope; c2 is the state when the sliding pin 2.3 contacts the fourth guide slope (the fourth guide slope is the lower slope with the slope away from the upper long fork 2.212): the rod 2.1 is pressed down to drive the sliding lock 2.2 to move downward until the sliding pin 2.3 moves relatively to the third guide slope; b3 is the state of the sliding pin 2.3 when it slides out of the channel: the rod 2.1 continues to drive the sliding lock 2.3 to press down, and the sliding pin 2.3 enters the slide-out channel along the third guide slope; c4 is the state when the sliding pin 2.3 contacts the fourth guide slope (the fourth guide slope is the lower slope with the slope away from the upper long fork 2.212): 2.1 continues to drive the slide lock 2.3 downward, and the slide pin 2.3 reaches the transition point where the upper long fork 2.212 and the front of the upper part of the upper guide block 2.21 form an obtuse angle. The suspension rod 2.1 is pulled up for a displacement so that the slide pin 2.3 reaches the fourth guide slope; d2 is the state when the slide pin 2.3 contacts the outer side surface of the lower long fork 2.222: the suspension rod 2.1 is continuously pulled up to drive the slide lock 2.2 to move upward, so that the slide pin 2.3 moves relatively along the outer side surface of the lower long fork 2.222; e2 is the state when the slide pin 2.3 contacts the bottom of the lower guide block 2.22; f2 is the state when the slide pin 2.3 is separated from the slide lock 2.2: the suspension rod 2.1 is continuously pulled up until the slide pin 2.3 is completely separated from the slide lock 2.2, and finally reaches Figure 4 The initial state of a1.

[0037] Figure 4 In the process from a1 to e1, Figure 5 During the process from a2 to f2 in FIG. 1 , the actual position of the slide pin 2.3 does not change and is located at the lower part of the slide bracket 2.6.

[0038] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A device for handling pipes, Features: The invention comprises a hanger and a clamping and placing control assembly, wherein the hanger comprises an upper slide (1.1), a large arm (1.2), a small arm (1.3) and an arm end (1.4) which are arranged in sequence from top to bottom, the upper slide (1.1) is fixed to the upper end of the large arm (1.2), and the two ends of the small arm (1.3) are respectively hinged to the large arm (1.2) and the arm end (1.4); The clamping and releasing control assembly comprises a suspension rod (2.1), a sliding lock (2.2), a sliding pin (2.3) and a pull rope (2.4); one end of the suspension rod (2.1) extends into the upper slide seat (1.1) and is rotationally connected to the sliding lock (2.2) located in the upper slide seat (1.1) via a pin shaft (2.5); guide grooves (1.11) for vertical sliding are arranged at positions corresponding to the pin shaft (2.5) on the two side walls of the upper slide seat (1.1); a vertical slide frame (2.6) is fixed to the lower part of the upper slide seat (1.1); the sliding pin (2.3) is slidably arranged on the slide frame (2.6) and its two ends extend out of two sides of the slide frame (2.6); one end of the pull rope (2.4) is connected to the arm end (1.4) and the other end passes through the inner side of the suspension frame and is connected to the sliding pin (2.3); the sliding lock (2.2) and the pull rope (2.4) are both two symmetrically arranged relative to the slide frame (2.6); The slide lock (2.2) comprises an upper guide block (2.21), a lower guide block (2.22) and a side baffle (2.23) for connecting the two. The upper portion of the upper guide block (2.21) is rotatably connected to the pin shaft (2.5), and the lower portion has a V-shaped fork with an opening facing downward. The upper portion of the lower guide block (2.22) is a V-shaped fork with an opening facing upward, and the lower portion is a first guide slope for facilitating the sliding pin (2.3) to enter the lock groove. The upper guide block (2.21) and the lower guide block (2.22) are arranged in a plug-in manner and form a sliding-in channel and a sliding-out channel for the sliding pin (2.3). The side baffle (2.23) is located on a side away from the slide frame (2.6). The V-shaped fork of the upper guide block (2.21) comprises an upper short fork (2.211) and an upper long fork (2.212) at an acute angle, and the V-shaped fork of the lower guide block (2.22) comprises a lower short fork (2.221) and a lower long fork (2.222) at an acute angle; the lower short fork (2.221) is located between the upper short fork (2.211) and the upper long fork (2.212); the upper end of the lower short fork (2.221) has a second guiding inclined surface for facilitating the sliding pin (2.3) to slide in; the second guiding inclined surface is parallel to the inner side surface of the upper short fork (2.211) and the entrance of the sliding channel is formed between the two; the upper long fork (2.212) is inserted into the lower short fork (2.221) and the lower long fork (2.222) ), the inner side surface of the upper long fork (2.212) and the inner side surface of the lower short fork (2.221) are parallel and form a sliding-in channel; the inner bottom surface formed by the lower short fork (2.221) and the lower long fork (2.222) serves as a locking groove of the sliding lock (2.2); the bottom end of the upper long fork (2.212) has a third guiding inclined surface for facilitating the sliding pin (2.3) to slide out, the middle and upper part of the outer side surface of the upper long fork (2.212) is parallel to the middle and upper part of the inner side surface of the lower long fork (2.222) and forms a sliding-out channel; the upper long fork (2.212) and the front side of the upper part of the upper guide block (2.21) form an obtuse transition, and the outer side of the upper end of the lower long fork (2.222) has a fourth guiding inclined surface for facilitating the sliding pin (2.3) to slide out along it; When grasping, the suspension rod (2.1) is pressed downward to drive the slide lock (2.2) to slide downward and make the slide pin (2.3) slide into the lock groove of the slide lock (2.2), and then the suspension rod (2.1) is pulled upward to drive the slide pin (2.3) to slide upward along the slide frame (2.6), and the pull rope (2.4) is tightened to drive the small arm (1.3) and the arm end (1.4) to tighten inward to achieve the clamping of the pipeline; When lowering, the suspension rod (2.1) is pressed downward to drive the sliding pin (2.3) to slide to the lower end of the slide frame (2.6), the pull rope (2.4) is loosened and drives the small arm (1.3) and the arm end (1.4) to relax outward to lower the pipeline, and the suspension rod (2.1) is further pressed downward to separate the sliding lock (2.2) from the sliding pin (2.3).

2. A device for pipe handling according to claim 1, Features: A clamping ring (2.7) is provided on the sliding pin (2.3) at positions abutting against both sides of the slide frame (2.6) to prevent the sliding pin (2.3) from moving left and right, and a connecting pipe (2.8) is provided at the lower end of the clamping ring (2.7) for connecting one end of a fixed pull rope (2.4).

3. A device for pipe handling according to claim 1, Features: The upper arm (1.2), the lower arm (1.3) and the arm end (1.4) are all frame structures with reinforcing ribs arranged inside, and there are adjustment gaps between the two sides of the lower arm (1.3) and the upper arm (1.2) and the arm end (1.4) for convenient tightening, and the upper arm (1.2), the lower arm (1.3) and the arm end (1.4) are all two symmetrically arranged relative to the slide frame (2.6).

4. A device for pipe handling according to claim 1, Features: The side baffle (2.23) of the slide lock (2.2) fits against the inner wall of the upper slide seat (1.1), and an adjustment gap is left in the upper slide seat (1.1) to facilitate the rotation of the slide lock (2.2). The two slide locks (2.2) are connected as a whole via a pin shaft (2.5), and the lower end of the suspension rod (2.1) has a rotating sleeve (2.11) horizontally sleeved on the pin shaft (2.5).

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