Pipeline transportation device

Abstract

The invention discloses a pipeline transportation device which comprises a moving trolley arranged at the end of a pipeline and used for rapidly, horizontally and conveniently moving the pipeline; the lever structure is rotationally arranged on the moving vehicle, is L-shaped and is used for quickly and conveniently lifting the pipeline; the supporting part is rotationally arranged on the moving vehicle, is fixedly mounted with the lever structure, and is used as a supporting point to provide supporting force to naturally erect the pipeline, and is used as a pipeline erecting supporting point at any time in a shutdown state; and the balance supporting part is rotationally arranged on the lever structure, movably installed with the moving vehicle and used for horizontally supporting the pipeline, the supporting part comprises a movable frame rotationally arranged on the moving vehicle, and the movable frame is fixedly installed with the end of the lever structure. According to the pipeline upwarping and transferring device, on-site manufacturing is easy, operation is convenient and fast, two sets form one set, two persons cooperate to directly upwarp and transfer a pipeline by synchronously utilizing the lever principle, convenience and rapidness are achieved, efficiency is high, and manpower and material resources are greatly saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the pipeline transportation technical field, and particularly relates to a pipeline transportation device. BACKGROUND

[0002] The pipeline transportation device is used for transporting the pipeline to a designated position in the pipeline laying process, and generally uses a crane frame or manual transportation.

[0003] At present, the horizontal transportation operation of large pipelines often needs to be performed at the construction site, and the conventional plate and cart need to be combined with a manual hoist or manpower lifting to lift the pipeline, but the following problems still exist, that is, low operation efficiency, high manpower consumption and complicated operation. SUMMARY

[0004] The present application aims at the above problems and provides a pipeline transportation device, which is simple to manufacture and convenient to operate, and two sets are used by two people to directly lift and transport the pipeline by using the lever principle, so that the pipeline is conveniently and quickly transported with high efficiency, and manpower and material resources are greatly saved.

[0005] To solve the above technical problems, the present application adopts the following technical scheme: a pipeline transportation device, comprising: A moving vehicle is arranged at the end of the pipeline to quickly and conveniently move the pipeline horizontally; A lever structure is arranged on the moving vehicle in a rotating manner, and the lever structure is in an L shape to quickly and conveniently lift the pipeline; A support part is arranged on the moving vehicle in a rotating manner and is fixedly installed with the lever structure to provide a support force as a support point to naturally lift the pipeline and at any time in the stop state as a pipeline lifting support point; A balance support part is arranged on the lever structure in a rotating manner and is movably installed with the moving vehicle to horizontally support the pipeline and stably move the pipeline.

[0006] Further, the support part comprises a movable frame arranged on the moving vehicle in a rotating manner, and the movable frame is fixedly installed with the end of the lever structure; Further, the support part comprises a movable frame arranged on the moving vehicle in a rotating manner, and the movable frame is fixedly installed with the end of the lever structure; Further, the support part comprises a movable frame arranged on the moving vehicle in a rotating manner, and the movable frame is fixedly installed with the end of the lever structure; Further, the support part comprises a movable frame arranged on the moving vehicle in a rotating manner, and the movable frame is fixedly installed with the end of the lever structure.

[0007] Further, the cross section of the fixed disc is in an I shape, and a T-shaped groove is arranged in the fixed disc to install the fixed disc.

[0008] Further, the locking mechanism comprises a plug rod inserted into the fixing disc, and the plug rod extends into a rotating disc, the rotating disc is provided with a plurality of insertion holes for inserting the plug rod, and the plug rod is in T-shaped cylindrical shape; Further, the locking mechanism comprises a plug rod inserted into the fixing disc, and the plug rod extends into a rotating disc, the rotating disc is provided with a plurality of insertion holes for inserting the plug rod, and the plug rod is in T-shaped cylindrical shape;

[0009] Further, the unlocking mechanism comprises a movable disc rotatably arranged on the movable frame, the movable disc is provided with a first pull rod, and the movable disc is provided with a second pull rod at an angle with the first pull rod; Further, the unlocking mechanism comprises a movable disc rotatably arranged on the movable frame, the movable disc is provided with a first pull rod, and the movable disc is provided with a second pull rod at an angle with the first pull rod;

[0010] Further, the unlocking mechanism further comprises a fixed block arranged on the movable frame, the traction rope passes through the fixed block, the traction rope is movably arranged with the lever structure, and the other end of the traction rope is movably arranged with a pulling rod connected with the end of the lever structure.

[0011] Further, the balance supporting part comprises a frame arranged on the moving vehicle; Further, the balance supporting part comprises a frame arranged on the moving vehicle; Further, the balance supporting part comprises a frame arranged on the moving vehicle;

[0012] Further, the first parallelogram structure comprises a U-shaped frame arranged on the frame, and the U-shaped frame is provided with two groups of first movable rods parallel to each other; Further, the first parallelogram structure comprises a U-shaped frame arranged on the frame, and the U-shaped frame is provided with two groups of first movable rods parallel to each other;

[0013] Further, the second parallelogram structure comprises two groups of second movable rods parallel to each other arranged on the first connecting frame, and the second movable rods are rotatably provided with a second connecting frame at the end away from the first connecting frame; Further, the second parallelogram structure comprises two groups of second movable rods parallel to each other arranged on the first connecting frame, and the second movable rods are rotatably provided with a second connecting frame at the end away from the first connecting frame; Further, the second parallelogram structure comprises two groups of second movable rods parallel to each other arranged on the first connecting frame, and the second movable rods are rotatably provided with a second connecting frame at the end away from the first connecting frame;

[0014] Further, the support member comprises support rods arranged symmetrically on the frame and triangular plates arranged symmetrically on the second movable rod, and the triangular plates are rotationally arranged with the support rods; Further, the support member comprises support rods arranged symmetrically on the frame and triangular plates arranged symmetrically on the second movable rod, and the triangular plates are rotationally arranged with the support rods;

[0015] The beneficial effects of the present application are embodied in: The present application, by two operators respectively push two transport devices close to the two ends of the pipeline, one of the operators operates the lever mechanism on the moving car of one of the transport devices, the second connecting frame on the moving car extends into the pipeline, and then the lever structure rotates around the moving car, the triangular plate is lifted by the lever structure, and the triangular plate rotates around the lever structure, the support rod and the second movable rod, the second movable rod is lifted by the triangular plate, and the second movable rod rotates around the second connecting frame and the first connecting frame, and the first connecting frame rotates around the first movable rod, the first movable rod rotates around the U-shaped frame, and then the two groups of parallelograms rotate, the horizontal and parallel of the first connecting frame and the second connecting frame are always maintained, the pipeline is horizontally lifted by the second connecting frame, the efficiency of horizontally moving the pipeline is improved, and the support part is adjusted while the lever structure is rotated, the movable frame is rotated around the moving car by the lever structure, at the same time, the traction rope is pulled, and the second pull rod is rotated by the traction rope, the movable disc and the first pull rod are rotated by the second pull rod, so that the first pull rod pulls the insertion rod and the stretching spring, then the rotating disc rotates on the fixed disc, the support wheel is adjusted to the appropriate position, the insertion rod is inserted on the rotating disc under the action of the spring, the height of the support wheel is fixed, when the pipeline is lifted, the support wheel provides support force as a support point to naturally support the pipeline, reduces the continuous force of manual work, and at any time in the shutdown state as a pipeline support point, personnel can rest after releasing the hand. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a perspective view of the present application; Figure 2 It is a perspective structural sectional view of the present application; Figure 3 It is a perspective structural view of the lever structure and the balanced support part of the present application; Figure 4 It is another perspective view of the lever structure and the balanced support part of the present application; Figure 5 It is a top view of the lever structure and the balanced support part of the present application; Figure 6 It is a perspective view of the support part of the present application; Figure 7 It is another perspective view of the support part of the present application; Figure 8 It is a perspective view of the support part of the present application; Figure 2A partial enlarged view shown in middle A part; Figure 9 A second movable rod and a second connecting frame of the present application are shown in a perspective view.

[0017] In the figure: 1, a mobile vehicle; 2, a lever structure; 3, a support part; 31, a movable frame; 32, a fixed disc; 33, a rotating disc; 34, a supporting wheel; 35, a plug rod; 36, a spring; 37, a first pull rod; 38, a movable disc; 39, a second pull rod; 310, a traction rope; 311, a fixed block; 4, a balanced support part; 41, a frame; 42, a U-shaped frame; 43, a first movable rod; 44, a first connecting frame; 45, a second movable rod; 46, a second connecting frame; 47, a triangular plate; 48, a supporting rod; 49, a rotating column. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The embodiments in the present application and the features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] Please refer to Figures 1-9 The present application discloses a pipeline transportation device, comprising: A mobile vehicle 1 is arranged at both ends of the pipeline to quickly and conveniently move the pipeline horizontally. The mobile vehicle 1 comprises an axle and wheels arranged at both ends of the axle; A lever structure 2 is rotationally arranged on the mobile vehicle 1 and is in an L shape to quickly and conveniently lift the pipeline. The lever structure 2 is rotationally arranged on the outer wall of the axle of the mobile vehicle 1 and rotates around the axle to lift the pipeline, thereby cooperating with the mobile vehicle 1 to quickly and efficiently move the pipeline horizontally; A support part 3 is rotationally arranged on the mobile vehicle 1 and is fixedly installed with the lever structure 2. The support part 3 and the lever structure 2 are fixedly installed through flanges and bolts to provide a support force as a support point to naturally support the pipeline, thereby reducing the continuous manual force and providing a support point for the pipeline to be erected in a shutdown state for personnel to rest and adjust after releasing the pipeline; A balanced support part 4 is rotationally arranged on the lever structure 2 and is movably installed with the mobile vehicle 1 to horizontally support and stabilize the pipeline. The balanced support part 4 is attached to the inner wall of the pipeline during lifting to improve the stability of the pipeline lifting.

[0020] In use, two operators respectively push two transport devices close to two ends of the pipeline, one of the operators operates the lever mechanism 2 on the moving vehicle 1 of one of the transport devices, the operator pushes the lever mechanism 2 and the moving vehicle 1 close to the two ends of the pipeline, the balance support 4 is deep into the inside of the two ends of the pipeline, then the lever mechanism 2 is rotated around the moving vehicle 1 by applying pressure to the lever mechanism 2, the lever mechanism 2 drives the balance support 4 to be horizontally attached to the pipeline, drives the pipeline to be lifted, at the same time, the lever mechanism 2 rotates around the moving vehicle 1, drives the support 3 to rotate, adjusts the support position of the support 3 to the ground, when the pipeline is lifted, the support 3 provides support force as a support point to naturally lift the pipeline, reduces manual continuous force, and at any time in the shutdown state as a pipeline lifting support point for personnel to release the hand to rest and adjust.

[0021] In specific embodiments, the support 3 includes a movable frame 31 rotatably arranged on the moving vehicle 1, and fixedly arranged with the lever mechanism 2, the movable frame 31 is sleeved on the axle of the moving vehicle 1, and the movable frame 31 and the lever mechanism 2 are fixedly arranged by flanges and bolts on one side; Further comprising a fixed disc 32 arranged at the end of the movable frame 31 and a rotating disc 33 rotatably arranged on the fixed disc 32, and the rotating disc 33 is provided with a support wheel 34; Further comprising a locking mechanism for limiting the fixed disc 32 and the rotating disc 33; Further comprising an unlocking mechanism arranged on the movable frame 31 for unlocking the locking mechanism.

[0022] In use, when the lever mechanism 2 is rotated around the moving vehicle 1 by pressing, the pipeline at one end of the lever mechanism 2 is lifted, at the same time, the unlocking structure is pulled to unlock the locking mechanism on the fixed disc 32, when the lever mechanism 2 rotates, the support wheel 34 is affected by gravity, the rotating disc 33 is rotated around the fixed disc 32 by the support wheel 34, the support wheel 34 contacts the ground, then the unlocking mechanism is released, the locking mechanism locks the rotating disc 33 on the fixed disc 32, the support wheel 34 is used as a support point to provide support force to naturally lift the pipeline, reduces manual continuous force, and at any time in the shutdown state as a pipeline lifting support point for personnel to release the hand to rest and adjust.

[0023] When the pipeline at the end of the lever mechanism 2 needs to be removed, the unlocking mechanism is pulled, the unlocking mechanism unlocks the locking mechanism, the lever mechanism 2 is rotated around the moving vehicle 1, the support wheel 34 on the lever mechanism 2 contacts the ground, the support wheel 34 is supported by the ground, the support wheel 34 and the rotating disc 33 are rotated around the fixed disc 32, and the support wheel 34 supports the pipeline.

[0024] In an embodiment, the cross section of the fixed disc 32 is in the shape of an I-beam, and the rotating disc 33 is provided with a T-shaped slot for installing the fixed disc 32, the movable frame 31 and the fixed disc 32 are arranged by welding, the rotating disc 33 is affected by the gravity of the support wheel 34, and the rotating disc 33 is rotated around the fixed disc 32.

[0025] In specific embodiments, the locking mechanism includes a plug rod 35 inserted into the fixed disc 32, and the plug rod 35 extends into the rotating disc 33, the rotating disc 33 is provided with a plurality of insertion holes for inserting the plug rod 35, the plug rod 35 is a T-shaped cylinder, the plug rod 35 is inserted into the rotating disc 33 through the fixed disc 32 to limit the rotation of the rotating disc 33 and the fixed disc 32, and the plug rod 35 is inserted into the insertion hole; Further comprising a spring 36 sleeved on the outer wall of the plug rod 35 to connect the fixed disc 32 and the plug rod 35, the spring 36 is fixedly installed on the T-shaped circular table of the plug rod 35, and the spring 36 pulls the plug rod 35 to be inserted into the insertion hole of the fixed disc 32 and the rotating disc 33.

[0026] In an embodiment, the unlocking mechanism includes a movable disc 38 rotatably arranged on the movable frame 31, the movable disc 38 is provided with a first pull rod 37, the movable disc 38 is provided with a second pull rod 39 at an angle with the first pull rod 37, the movable disc 38 is rotatably connected to the movable frame 31, and the movable disc 38 supports the first pull rod 37 and the second pull rod 39; Further comprising a traction rope 310 arranged on the second pull rod 39, the first pull rod 37 is provided with a pull rope for connecting the plug rod 35, the traction rope 310 pulls the second pull rod 39 and the movable disc 38 to rotate, the first pull rod 37 is deflected by the movable disc 38, the plug rod 35 is pulled away from the rotating disc 33 by the first pull rod 37, and the spring 36 is stretched, when the traction rope 310 loses external force, the spring 36 drives the plug rod 35 to be inserted into the insertion hole of the rotating disc 33, and the rotating disc 33 and the fixed disc 32 are limited.

[0027] In specific embodiments, the unlocking mechanism further includes a fixed block 311 arranged on the movable frame 31, the traction rope 310 passes through the fixed block 311, the traction rope 310 is movably arranged with the lever structure 2, the other end of the traction rope 310 is movably provided with a pulling rod connected with the end of the lever structure 2, the pulling rod moves the traction rope 310 on the lever structure 2 and the fixed block 311, and a ring is arranged on the lever structure 2 to change the direction of the traction rope 310.

[0028] In an embodiment, the balance support part 4 includes a frame 41 arranged on the moving vehicle 1; Further comprising a first parallelogram structure arranged on the frame 41 and a second parallelogram arranged on the first parallelogram structure; Further comprising a support fixedly arranged on the frame 41 and rotatably connected with the second parallelogram structure, and the support is rotatably arranged with the lever structure 2, and the first parallelogram structure, the second parallelogram and the support are used to ensure that the balance support part always rises and falls horizontally under the driving of the lever structure.

[0029] In specific embodiments, the first parallelogram structure comprises a U-shaped frame 42 arranged on the frame 41, and two groups of first movable rods 43 arranged on the U-shaped frame 42 and parallel to each other; The frame 41 is a U-shaped frame, and the frame 41 is fixedly arranged on the mobile vehicle 1 by flanges and bolts or welding. The first movable rods 43 are arranged on the front and rear sides of the U-shaped frame 42, and the left and right sides of the same side of the U-shaped frame 42 are respectively provided with the first movable rods 43. The first connecting frame 44 is arranged on the two groups of first movable rods 43, and the two first movable rods 43 arranged on the front of the U-shaped frame 42 and the first connecting frame 44 and the U-shaped frame 42 form a parallelogram.

[0030] In an embodiment, the second parallelogram structure further comprises two groups of second movable rods 45 arranged on the first connecting frame 44 and parallel to each other, and the second movable rods 45 are rotatably arranged on the first connecting frame 44. The two second movable rods 45 arranged on the front of the first connecting frame 44, the first connecting frame 44 and the second connecting frame 46 form a parallelogram, and the first connecting frame 44 and the second connecting frame 46 are in a parallel horizontal state. The second connecting frame 46 and the first connecting frame 44 are both L-shaped, the second connecting frame 46 supports the horizontal section of the pipeline, and is rotatably arranged to be horizontal to the forward direction of the mobile vehicle 1. The top of the two first movable rods 43 is rotatably connected to the second movable rod 45 arranged at the bottom of the first connecting frame 44.

[0031] In specific embodiments, the support member comprises a support rod 48 arranged symmetrically on the frame 41 and a triangular plate 47 arranged symmetrically on the second movable rod 45, and the triangular plate 47 is rotatably arranged with the support rod 48. The support rod 48 is V-shaped, and the rotating column 49 is rotatably arranged on the triangular plate 47 and fixedly arranged on the lever structure 2.

[0032] In the process of lifting the pipe, two transport devices are close to the two ends of the pipe under the operation of the operator, the lever structure 2 of one of the transport devices drives the second connecting frame 46 to be inserted into the end of the pipe, the lever structure 2 is rotated, the lever structure 2 pulls the triangular plate 47 to rotate on the supporting rod 48, the triangular plate 47 is rotated between the lever structure 2 and the triangular plate 47 through the rotating column 49, and the triangular plate 47 is rotated on the second movable rod 45, the second movable rod 45 is rotated around the first connecting frame 44 and the second connecting frame 46, since the second movable rod 45, the first connecting frame 44, the second connecting frame 46 and the first movable rod 43 form a parallelogram, and the first movable rod 43 and the second movable rod 45 are rotated on the first connecting frame 44, the first movable rod 43 on the first connecting frame 44 is rotated on the L-shaped frame 42, the L-shaped frame 42, the first movable rod 43 and the first connecting frame 44 form a parallelogram, on the two sets of rotating parallelograms, the two sets of rotating parallelograms pull and rotate each other, the horizontal lifting of the first connecting frame 44 and the second connecting frame 46 is always maintained, the stability of lifting the pipe is improved, and the pipe is lifted under the action of the lever structure 2, so that labor is saved.

[0033] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, motion condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.

[0034] In addition, if the embodiments of the present application involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears to be contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0035] In addition, "a plurality of" means two or more.

[0036] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A pipeline transportation device, characterized in that: include: A mobile vehicle (1) is provided at the end of the pipeline and is used to move the pipeline horizontally and quickly; A lever structure (2) is rotatably mounted on the mobile vehicle (1), and the lever structure (2) is L-shaped for quickly and conveniently lifting the pipeline; The support portion (3) is rotatably mounted on the mobile vehicle (1) and fixedly mounted on the lever structure (2), and is used as a support point to provide a supporting force to naturally erect the pipeline, and can be used as a support point for erecting the pipeline at any time when the pipeline is in a stopped state; The balancing support portion (4) is rotatably mounted on the lever structure (2) and movably mounted on the moving vehicle (1) to horizontally support the pipeline and stabilize the moving pipeline.

2. The pipeline transportation device according to claim 1, characterized in that: The support portion (3) includes a movable frame (31) rotatably mounted on the mobile vehicle (1), and the movable frame (31) is fixedly mounted to the end of the lever structure (2); It also includes a fixed disk (32) arranged at the end of the movable frame (31) and a turntable (33) rotatably arranged on the fixed disk (32), and a supporting wheel (34) is provided on the turntable (33); It also includes a locking mechanism for limiting the position of the fixed disk (32) and the rotating disk (33); It also includes an unlocking mechanism arranged on the movable frame (31) for unlocking the locking mechanism.

3. The pipeline transportation device according to claim 2, characterized in that: The cross section of the fixed disk (32) is in the shape of an I-beam, and a T-shaped slot for mounting the fixed disk (32) is provided in the rotating disk (33).

4. The pipeline transportation device according to claim 2, characterized in that: The locking mechanism includes an insertion rod (35) plugged into the fixed disk (32), and the insertion rod (35) extends into the rotating disk (33). The rotating disk (33) is provided with a plurality of insertion holes for inserting the insertion rod (35), and the insertion rod (35) is in the form of a T-shaped cylinder. It also includes a spring (36) sleeved on the outer wall of the insertion rod (35) for connecting the fixed disk (32) and the insertion rod (35).

5. The pipeline transportation device according to claim 4, characterized in that: The unlocking mechanism comprises a movable disk (38) rotatably arranged on the movable frame (31), a first pull rod (37) being provided on the movable disk (38), and a second pull rod (39) being provided on the movable disk (38) and forming an angle with the first pull rod (37); It also includes a traction rope (310) arranged on the second pull rod (39), and the first pull rod (37) is provided with a pull rope for connecting to the insertion rod (35).

6. The pipeline transportation device according to claim 5, characterized in that: The unlocking mechanism further comprises a fixed block (311) arranged on the movable frame (31), the traction rope (310) passes through the fixed block (311), the traction rope (310) and the lever structure (2) are movably arranged, and the other end of the traction rope (310) is movably provided with a pulling rod connected to the end of the lever structure (2).

7. The pipeline transportation device according to claim 1, characterized in that: The balancing support portion (4) includes a frame (41) provided on the mobile vehicle (1); It also includes a first parallelogram structure arranged on the frame (41) and a second parallelogram arranged on the first parallelogram structure; It also includes a support member fixedly arranged on the frame (41) and rotatably connected to the second parallelogram structure, and the support member is rotatably arranged with the lever structure (2), and the first parallelogram structure, the second parallelogram and the support member are used to ensure that the balance support part always lifts the pipeline horizontally under the drive of the lever structure.

8. The pipeline transportation device according to claim 7, characterized in that: The first parallelogram structure includes a U-shaped frame (42) disposed on the frame (41), and two groups of mutually parallel first movable rods (43) are provided on the U-shaped frame (42); It further includes a first connecting frame (44) disposed on the two groups of first movable rods (43), and the two first movable rods (43) disposed on the front surface of the U-shaped frame (42), the first connecting frame (44) and the U-shaped frame (42) form a parallelogram.

9. The pipeline transportation device according to claim 8, characterized in that: The second parallelogram structure further includes two groups of mutually parallel second movable rods (45) disposed on the first connecting frame (44), and a second connecting frame (46) is rotatably provided at one end of the second movable rod (45) away from the first connecting frame (44); The two second movable rods (45) disposed on the front surface of the first connecting frame (44), the first connecting frame (44) and the second connecting frame (46) form a parallelogram, and the first connecting frame (44) and the second connecting frame (46) are in a parallel horizontal state; Among them, the tops of the two first movable rods (43) are rotatably connected to the second movable rods (45) located at the bottom of the first connecting frame (44).

10. The pipeline transportation device according to claim 9, characterized in that: The support member includes symmetric support rods (48) disposed on the frame (41) and symmetric triangular plates (47) disposed on the second movable rods (45), and the triangular plates (47) are rotatably disposed with the support rods (48); It further includes a rotating column (49) rotatably disposed on the triangular plate (47) and the lever structure (2) is fixedly disposed, and the support rod (48) is in a V shape.

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