Overturning and lifting device for hydrostatic test of composite gas cylinder

Abstract

The invention relates to a hydrogen storage pressure vessel test technology, and aims to provide an overturning and lifting device for a hydrostatic test of a composite gas cylinder. The device comprises a bearing plate trailer, a vertical supporting frame, a transverse pulley assembly, a gas cylinder overturning frame, a steel rope set and a winch. Wherein the vertical supporting frame is fixedly installed at one end of the bearing plate trailer, the head portion of the gas cylinder overturning frame is located at the other end opposite to the head portion of the gas cylinder overturning frame, and the tail portion of the gas cylinder overturning frame is installed in the middle of the bearing plate trailer in a pivoted mode; one end of the transverse pulley assembly is connected with the top of the vertical supporting frame, the other end of the transverse pulley assembly transversely extends to the position above the gas cylinder overturning frame, fixed pulleys are arranged at the two ends respectively, and a movable pulley capable of transversely moving is arranged in the middle. The device utilizes the winch to pull the gas cylinder overturning frame to realize overturning, and the movable pulley moves along with the direction of the steel rope so that the steel rope is basically kept vertical to the movable pulley. As the gas cylinder is not directly stressed, the damage to the outer surface of the gas cylinder caused by conventional hoisting can be avoided, the gas cylinder is integrally controlled in the overturning process, and the equipment requirement on a winch is reduced.

Description

Technical Field

[0001] The present invention relates to the technology of hydrogen storage pressure vessel testing, and particularly to a device for water injection in the hydrostatic test of large-volume gas cylinders. Background Art

[0002] The carbon fiber fully wound composite hydrogen storage gas cylinder (hereinafter referred to as the hydrogen storage gas cylinder) is an important on-vehicle hydrogen storage pressure vessel. Conducting a pressure test on the hydrogen storage gas cylinder to verify its strength is of great significance for verifying the safety of the hydrogen storage gas cylinder and improving the design quality. When conducting a pressure test, a fluid needs to be introduced into the hydrogen storage gas cylinder. Since gas has good compressibility, if the gas cylinder fails, the energy of the compressed gas will be quickly released, posing a high risk. In addition, the pressure test mostly uses the method of injecting air into the cylinder to achieve pressurization. The presence of a large amount of compressible gas in the gas cylinder will cause the pressure to rise slowly, affecting the test efficiency. Water can be regarded as an incompressible fluid at normal temperature. When the gas cylinder fails, the energy release of water is relatively slow, and it is conducive to rapid pressurization. Therefore, the hydrostatic test is the main means of the gas cylinder pressure test.

[0003] According to the national standards for type III / IV hydrogen storage gas cylinders, during the design and manufacturing process of hydrogen storage gas cylinders, hydrostatic tests, hydrostatic burst tests, and pressure cycle tests, etc. must be carried out to verify whether the strength of the hydrogen storage gas cylinders is qualified. Since the inlets and outlets of the hydrogen storage gas cylinders are both located at the central axis of the gas cylinders, in order to fill the gas cylinders with water, the tail of the gas cylinder must be blocked and placed almost vertically, and water is injected from the top. However, due to the large mass and smooth surface of the gas cylinders, it is difficult for operators to find a point of force, and there are safety hazards during the process of flipping and lifting the gas cylinders; for the hydrostatic test without bursting, the gas cylinder must be laid down after the experiment to drain the water. Taking a hydrogen storage gas cylinder with an inner diameter of 372 mm, a nominal volume of 100 L, and a nominal pressure of 35 MPa as an example, the mass of this gas cylinder is about 70 kg, and the mass after being filled with water is about 170 kg. It requires multiple operators to cooperate to complete the water injection and drainage operations. In addition, the national standard GB / T 35544 only requires that the nominal outer diameter of the hydrogen storage gas cylinder is 180 - 660 mm, and does not put forward strict requirements for the length. Therefore, there may be significant differences in the nominal outer diameters of different gas cylinders. Even if conventional lifting devices are used, targeted installation and disassembly work before and after lifting are required, which not only increases a lot of workload for the experimental personnel, but also various accidents are likely to occur during the lifting process itself.

[0004] Based on this, the present invention proposes a newly designed flipping and lifting device for the hydrostatic test of composite material gas cylinders, which is applicable to hydrogen storage gas cylinders with large mass, different diameters and lengths, and can improve the efficiency of the pressure test of hydrogen storage gas cylinders. Summary of the Invention

[0005] The problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a flipping and lifting device for the hydrostatic test of composite material gas cylinders.

[0006] To solve the problems of the prior art, the technical solution adopted by the present invention is as follows:

[0007] Provided is a turnover and lifting device for hydrostatic testing of a composite material gas cylinder, including: a load-bearing flatbed vehicle, a vertical support frame, a transverse pulley assembly, a gas cylinder turnover frame, a steel rope group, and a winch; wherein,

[0008] The gas cylinder turnover frame is in the shape of a long cage, including a gas cylinder support at the lower part and an enclosing structure at the upper part;

[0009] The vertical support frame is fixedly installed at one end of the load-bearing flatbed vehicle, and the head of the gas cylinder turnover frame is located at the other end of the load-bearing flatbed vehicle opposite to the vertical support frame; two second support columns are provided in the middle of the load-bearing flatbed vehicle, and the tail of the gas cylinder turnover frame is pivotally installed at the top of the second support column; the winch is fixedly installed on the load-bearing flatbed vehicle;

[0010] The main body of the transverse pulley assembly is in the shape of a long strip, one end of which is fixedly connected to the top of the vertical support frame, and the other end extends horizontally above the head of the gas cylinder turnover frame; fixed pulleys are respectively provided at both ends of the transverse pulley assembly, and a movable pulley capable of moving horizontally is provided in the middle thereof; the steel rope group is installed between the fixed pulley and the movable pulley, one end of the steel rope is connected to the winch, and the other end is connected to the head of the gas cylinder turnover frame;

[0011] The distance between the transverse pulley assembly and the second support column is greater than the vertical height of the test gas cylinder; when the winch drives the steel rope to move, the steel rope pulls the gas cylinder turnover frame to rotate around the rotating shaft at the top of the second support column; during this process, the movable pulley moves along with the direction of the steel rope, so that the steel rope between the movable pulley and the gas cylinder turnover frame is basically perpendicular to the axis of the gas cylinder turnover frame.

[0012] As a preferred solution of the present invention, the gas cylinder support is in the shape of a U-shaped groove, and is formed by crossing a plurality of strip-shaped longitudinal beams and a plurality of arc-shaped circumferential beams; the enclosing structure includes a limit frame provided at the tail of the gas cylinder support, a plurality of belts spacedly provided on the gas cylinder support, and a traction frame provided at the head of the gas cylinder support; the steel rope is connected to the traction frame.

[0013] As a preferred solution of the present invention, a plurality of rollers are arranged at intervals on each circumferential beam, and the rollers on each circumferential beam are symmetrically arranged with respect to the central axis of the gas cylinder support; the rollers are fixed on the circumferential beam through bushings, and the rotation direction of each roller is perpendicular to the circumferential beam at its position.

[0014] As a preferred solution of the present invention, the limit frame includes a limit baffle, a limit frame and a fastening bolt; the limit frame includes a bottom plate and two side plates, the two side plates are oppositely provided at both ends of the bottom plate, and vertical sliding grooves are respectively provided on the inner side surfaces; both sides of the limit baffle are movably inserted into the vertical sliding grooves, and positioning is achieved by the fastening bolts penetrating and installed on the side plates.

[0015] As a preferred embodiment of the present invention, the longitudinal beams at the uppermost edges on both sides of the gas cylinder bracket are used as installation beams. A plurality of hinge shafts are arranged at intervals on one of the installation beams, and a plurality of buckles are arranged at intervals on the other installation beam; one end of each belt is respectively connected to the hinge shaft, and the other end is connected to the buckle.

[0016] As a preferred embodiment of the present invention, the towing frame is arc-shaped. One end thereof is connected to an ear plate provided on the longitudinal beam through a hinge shaft, and the other end is connected to another ear plate arranged oppositely through a detachable bolt; a steel wire fixing loop is provided at the highest point in the middle of the towing frame; two first support columns are provided on the load-bearing trolley, and rubber buffer pads are provided at their tops, and the two ear plates are respectively placed on the rubber buffer pads.

[0017] As a preferred embodiment of the present invention, the vertical support frame includes two obliquely arranged support beams with their tops connected, and their bottoms are fixed on the load-bearing trolley; a foam buffer pad is provided in the middle of the vertical support frame, and a rib plate is obliquely arranged between the vertical support frame and the transverse pulley assembly, and both ends of the rib plate are fixedly connected to form a stable support structure.

[0018] As a preferred embodiment of the present invention, the main body of the transverse pulley assembly is a pulley frame with a double-layer splint structure, and a chute is provided along the length direction at its waist, and the axle of the movable pulley is installed in the chute.

[0019] As a preferred embodiment of the present invention, the winch is located below the vertical support frame; a universal wheel is provided at each of the four corner positions at the bottom of the load-bearing trolley.

[0020] As a preferred embodiment of the present invention, at the connection position between the transverse pulley assembly and the vertical support frame, two coaxial first fixed pulleys and a second fixed pulley are provided, and a third fixed pulley is provided at the other end of the transverse pulley assembly; the steel wire rope group includes a main rope and a secondary rope; one end of the main rope is connected to the winch, and after its middle part bypasses the first fixed pulley and the movable pulley from the upper edge, the other end is connected to the gas cylinder turnover frame; one end of the secondary rope is bound and wound around the second fixed pulley, and after its middle part bypasses the movable pulley and the third fixed pulley from the lower edge, the other end is bound to the axle of the movable pulley.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. The circumferential beam of the gas cylinder turnover frame in the present invention is provided with a wheel set, which can facilitate the horizontal pushing or pulling of the gas cylinder into or out of the gas cylinder turnover frame, and reduce the force required for horizontal movement of the gas cylinder. In addition, the limiting frame provided at the tail of the gas cylinder turnover frame can support the gas cylinder, and the limiting frame can move in the vertical chute, so as to adjust the tail support part according to the outer diameter of the gas cylinder.

[0023] 2. In the present invention, the front end of the gas cylinder turnover rack is connected to a steel rope through a towing rack, allowing the placement of gas cylinders with lengths exceeding the gas cylinder turnover rack. The cooperation between the belt and the circumferential beam can bind gas cylinders with different diameters within a relatively large radial dimension range. Therefore, the present invention is applicable to gas cylinders with various diameters and lengths. The device makes the gas cylinder stand upright by rotating the gas cylinder turnover rack, and the gas cylinder itself is not directly stressed, which can avoid the pressure test error caused by damage to the outer surface of the gas cylinder during the conventional lifting method.

[0024] 3. In the present invention, multiple pulleys are arranged in the transverse pulley assembly and the main rope and the auxiliary rope are used in combination, which can ensure that the pulling force of the main rope on the gas cylinder turnover rack is almost perpendicular to the central axis of the gas cylinder under the traction state, and can provide the maximum torque under the same pulling force. Therefore, the device can reduce the equipment requirements for the winch and further reduce the cost.

[0025] 4. During the use of the device, the gas cylinder is firmly bound in the gas cylinder turnover rack and will not loosen during the lifting process; during the traction process, with the hinge axis as the rotation center and in cooperation with the rope group traction limited in the vertical support frame, it can ensure that the gas cylinder is overall controlled during the turnover process and will not be in danger of swaying or overturning. Brief Description of the Drawings

[0026] Figure 1 It is a schematic diagram of the turnover and lifting device in the present invention.

[0027] Figure 2 It is a side view of the turnover and lifting device.

[0028] Figure 3 It is a schematic diagram of the structure of the gas cylinder turnover rack.

[0029] Figure 4 It is a schematic diagram of the structure of the limit frame.

[0030] Figure 5 It is a schematic diagram of the structure of the transverse pulley assembly.

[0031] Reference numerals in the drawings: 1 load-bearing plate truck; 2 gas cylinder turnover rack; 3 vertical support frame; 4 transverse pulley assembly; 5 winch; 6 universal wheel; 7 foam buffer pad; 8 main rope; 9 inclined support beam; 10 rib plate; 11 first fixed pulley; 12 second fixed pulley; 13 pulley frame; 14 chute; 15 movable pulley; 16 third fixed pulley; 17 auxiliary rope; 18 first support column; 19 second support column; 20 left ear plate; 21 first hinge axis; 22 belt; 23 circumferential beam; 24 roller; 25 longitudinal beam; 26 belt; 27 buckle; 28 snap ring; 29 towing rack; 30 right ear plate; 31 bolt; 32 second hinge axis; 33 rubber buffer pad; 34 limit frame; 35 limit frame; 36 limit baffle; 37 fastening bolt; 38 vertical chute; 39 gas cylinder; 40 rope buckle. Detailed Embodiments

[0032] To elaborate the purpose, technical solution and advantages of the present invention in more detail, in combination with embodiments and drawings, the present invention will be further described in detail as follows:

[0033] In the description of the present invention, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "back end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0034] The First Part: Overview of the Implementation Scheme of the Present Invention

[0035] The turnover and lifting device for hydrostatic test of composite material gas cylinders according to the present invention includes several main components: a load-bearing flatbed truck, a vertical support frame, a transverse pulley assembly, a gas cylinder turnover frame, a steel rope group, and a winch. Among them, the load-bearing flatbed truck is the load-bearing component of the entire device, and the vertical support frame, the gas cylinder turnover frame, and the winch are all directly installed on it. Four universal wheels are provided at the four corners of its bottom.

[0036] The gas cylinder turnover frame is in the shape of a long cage, including a gas cylinder support at the lower part and an enclosure structure at the upper part. Among them,

[0037] The gas cylinder support is in the shape of a U-shaped groove, which is formed by the intersection of multiple strip-shaped longitudinal beams and multiple arc-shaped circumferential beams; several rollers are arranged at intervals on each circumferential beam, and the rollers on each circumferential beam are symmetrically arranged with respect to the central axis of the gas cylinder support; the rollers are fixed on the circumferential beam through bushings, and the rotation direction of each roller is perpendicular to the circumferential beam at its position. Two first support columns are provided on the load-bearing flatbed truck, and rubber buffer pads are provided at their tops. Ear plates are respectively provided at the ends of the two outermost longitudinal beams of the gas cylinder support, and the ear plates are respectively placed on the rubber buffer pads. Two second support columns are provided in the middle of the load-bearing flatbed truck, and the tail of the gas cylinder turnover frame is pivotally installed at the top of the second support column through a hinge shaft or other means.

[0038] The enclosure structure includes a limiting frame provided at the tail of the gas cylinder bracket, multiple belts spacedly arranged on the gas cylinder bracket, and a traction frame provided at the head of the gas cylinder bracket. The limiting frame includes a limiting baffle, a limiting frame, and fastening bolts; the limiting frame includes a bottom plate and two side plates, the two side plates are oppositely arranged at both ends of the bottom plate, and vertical sliding grooves are respectively provided on the inner surfaces; both sides of the limiting baffle are movably inserted into the vertical sliding grooves and are positioned by the fastening bolts penetrating and installed on the side plates. Taking the longitudinal beams at the uppermost edges on both sides of the gas cylinder bracket as the installation beams, multiple hinge shafts are alternately arranged on one of the installation beams, and multiple buckles are alternately arranged on the other installation beam; one end of each belt is respectively connected to the hinge shaft, and the other end is connected to the buckle. The traction frame is arc-shaped, one end of which is connected to the ear plate on the longitudinal beam through a hinge shaft, and the other end is connected to the other ear plate arranged oppositely through a detachable bolt; a steel wire fixing loop is provided at the highest point in the middle of the traction frame, and the end of the steel wire is tied to the loop.

[0039] The vertical support frame is fixedly installed at one end of the load-bearing flatbed vehicle, and the head of the gas cylinder turning frame is located at the other end of the load-bearing flatbed vehicle opposite to the vertical support frame. The vertical support frame includes two obliquely supporting beams with their tops connected, and their bottoms are fixed on the load-bearing flatbed vehicle. A foam buffer pad is provided in the middle of the vertical support frame, and a rib plate arranged obliquely is provided between the vertical support frame and the transverse pulley assembly, and both ends of the rib plate are fixedly connected to form a stable support structure. The winch is located below the vertical support frame;

[0040] The main body of the transverse pulley assembly is strip-shaped, exemplarily a pulley frame with a double-layer splint structure, and the distance from the second support column is greater than the vertical height of the test gas cylinder. A sliding groove is provided along the length direction at the waist of the transverse pulley assembly, and the axle of the movable pulley is installed in the sliding groove. One end of the transverse pulley assembly is fixedly connected to the top of the vertical support frame, and the other end extends horizontally above the head of the gas cylinder turning frame; fixed pulleys are respectively provided at both ends of the transverse pulley assembly, and a movable pulley capable of moving horizontally is provided in the middle. Specifically, at the connection position between the transverse pulley assembly and the vertical support frame, two coaxially arranged first fixed pulleys and second fixed pulleys are provided, and a third fixed pulley is provided at the other end of the transverse pulley assembly.

[0041] A steel wire rope group is installed between the fixed pulley and the movable pulley, including a main rope and a deputy rope. Among them, one end of the main rope is connected to the winch, and after its middle part bypasses the first fixed pulley and the movable pulley from the upper edge, the other end is connected to the traction frame of the gas cylinder turning frame. One end of the deputy rope is tied and wound around the second fixed pulley, and after its middle part bypasses the movable pulley and the third fixed pulley from the lower edge, the other end is tied to the axle of the movable pulley. When the winch drives the steel wire rope to move, the steel wire rope pulls the gas cylinder turning frame to rotate around the rotating shaft at the top of the second support column; during this process, the movable pulley moves along with the direction of the steel wire rope, so that the steel wire rope between the movable pulley and the gas cylinder turning frame is basically perpendicular to the axis of the gas cylinder turning frame.

[0042] Part II Specific Examples and Instructions

[0043] 1. Device structure description of the example

[0044] like Figure 1 , 2 As shown, the composite gas cylinder water pressure test turning and lifting device provided by the present invention comprises a load-bearing trolley 1, a gas cylinder turning frame 2, a vertical support frame 3, a transverse pulley assembly 4 and a winch 5. The vertical support frame 3 comprises an oblique support beam 9, in the middle of which a foam cushion 7 is arranged to prevent the gas cylinder from accidentally tipping over and damaging the winch 5 when it is erected. The vertical support frame 3 and the transverse pulley assembly 4 are fixed by ribs 10 to prevent the latter from being damaged by force.

[0045] like Figure 3 As shown, the gas cylinder flip frame 2 includes a gas cylinder support and a protective structure. The gas cylinder support is used to support the gas cylinder 39, including a plurality of cross-arranged annular beams 23 and longitudinal beams 25. The rollers 24 on the annular beams 23 are arranged symmetrically relative to the central axis of the gas cylinder support, and the end face of each wheel is perpendicular to the annular beam 23 and cannot move along the annular beam 23. This design can reduce the friction force when the gas cylinder 39 slides axially, and can more conveniently move the gas cylinder 39 into or out of the gas cylinder support. A hinge shaft is set on the uppermost longitudinal beam 25, and a buckle 27 is set on the longitudinal beam 25 on the other side, which are respectively used to install and fix the belt 22. The belt 22 is used to constrain the gas cylinder 39 radially to prevent the gas cylinder 39 from tipping over when it is upright. The tail end of the gas cylinder support can be pivotally mounted on the second support column 19, specifically, a first hinge shaft 21 is set at the top of the latter, and the side of the first hinge shaft 21 is fixed to the longitudinal beam 25, and the gas cylinder support can rotate around the first hinge shaft 21. An arc-shaped traction frame 29 is provided at the front end of the gas cylinder support, and a snap ring 27 is provided in the middle thereof. One end of the traction frame 29 is fixed to the left ear plate 20 through a second hinge shaft 32, and the other end is connected to the right ear plate 30 through a detachable bolt 31. The traction frame 29 is used to connect the main rope 8. After loosening the bolt 31, the traction frame 29 can be rotated around the second hinge shaft 32 to open, so that the gas cylinder 39 can be placed from the oblique upper part of the gas cylinder turning frame 2. When the gas cylinder turning frame 2 is placed horizontally, the left ear plate 20 and the right ear plate 30 are pressed on the first support column 18, and the first support column 18 plays the role of supporting the gas cylinder turning frame 2. A rubber buffer pad 33 is provided at the top of the first support column 18 to reduce the damage caused by the contact between the first support column 18 and the ear plate.

[0046] like Figure 4As shown, the position-limiting frame 34 includes a position-limiting baffle 36, a position-limiting frame 35, and a fastening bolt 37. There are threaded holes on the side of the position-limiting baffle 36. The fastening bolt 37 is screwed into the threaded holes to press the position-limiting frame 35, thereby fixing the position of the position-limiting baffle 36. A pair of vertical sliding grooves 38 are provided on the side of the position-limiting frame 35. The position-limiting baffle 36 can move within the vertical sliding grooves 38. Loosening the fastening bolt 37 allows the position-limiting baffle 36 to slide up and down. The position-limiting baffle 36 can move from Figure 5 the solid line position shown in to the dashed line position.

[0047] As Figure 2 , 5 shown, the main body of the horizontal pulley assembly 4 is a horizontally arranged pulley frame 13, in which the first fixed pulley 11, the second fixed pulley 12, the third fixed pulley 16, and the movable pulley 15 are all installed. The first fixed pulley 11 and the second fixed pulley 12 are coaxial and located at one end connected to the vertical support frame 3. The third fixed pulley 16 is located at the other end, and the movable pulley 15 is located in the sliding groove 14 of the pulley frame 13. The steel rope group includes a main rope 8 and a secondary rope 17. One end of the main rope 8 is connected to the winch 5. After passing around the first fixed pulley 11 and the movable pulley 15, the other end is connected to the snap ring 28 of the traction frame 29 in the gas cylinder turnover frame 2 and forms a rope buckle 40 for fixing. One end of the secondary rope 17 is tied to the axle of the movable pulley 15. After passing around the third fixed pulley 16, the other end is fixed and wound around the second fixed pulley 12.

[0048] 2. Description of the usage method of the exemplary device

[0049] During use, first loosen the rope buckle 40, then loosen the bolt 31, and rotate the traction frame 29 around the second hinge axis 32 to open it. Place the gas cylinder 39 into the gas cylinder turnover frame 2, loosen the fastening bolt 37 to adjust the up and down position of the position-limiting baffle 36 to ensure that the position-limiting baffle 36 can provide appropriate support for the gas cylinder 39. Connect the belt 22 to the buckle 27, then close the traction frame 29 and tighten the bolt 31. Move the movable pulley 15 to the front end of the sliding groove 14, and then connect the main rope 8 to the snap ring 27. Start the winch 5 and control the winch 5 to rotate forward. The main rope 8 is tightened, the gas cylinder turnover frame 2 rotates around the first hinge axis 21, and at the same time the secondary rope 17 is gradually released, and the first fixed pulley 11 slides along the sliding groove 14 towards the tail end of the pulley frame 13.

[0050] Here, the specific operation mode of the horizontal pulley assembly 4 will be described in detail: When the winch 5 tightens the main rope 8 in the forward rotation mode, the movement of the main rope 8 causes the first fixed pulley 11 to rotate. Since the first fixed pulley 11 and the second fixed pulley 12 are coaxial, the second fixed pulley 12 rotates accordingly, and the auxiliary rope 17 wound around the second fixed pulley 12 is gradually released, and the length of the unwound section of the auxiliary rope 17 increases. Because the axles of the second fixed pulley 12 and the third fixed pulley 16 are immovable, and the movable pulley 15 is itself under the pressure of the main rope 8 and has a tendency to move towards the tail end of the pulley frame 13; the increase in the length of the unwound section of the auxiliary rope 17 allows the movable pulley 15 to move a certain distance along the horizontal chute. As the length of the unwound section of the auxiliary rope 17 increases, the movable pulley 15 gradually slides to the tail end of the pulley frame 13. Based on the operation mode brought about by the specific design of the above-mentioned horizontal pulley assembly 4, the pulling force of the main rope 8 on the gas cylinder tipping frame 2 is almost perpendicular to the central axis of the gas cylinder 39, and the maximum torque can be provided under the same pulling force.

[0051] When the gas cylinder is flipped to the vertical position, the winch 5 is turned off. At this time, the gas cylinder 39 stands upright and the water injection operation can be carried out. If it is necessary to remove the gas cylinder 39 after water injection, tighten the gas cylinder valve, start the winch 5 and control the winch 5 to reverse. The main rope 8 is gradually released. Affected by the self-gravity of the gas cylinder 39, the gas cylinder tipping frame 2 rotates around the first hinge axis 21; the auxiliary rope 17 is gradually tightened, and the first fixed pulley 11 slides along the chute 14 towards the front end of the pulley frame 13. When the gas cylinder tipping frame 2 reaches the horizontal position, the left ear plate 20 and the right ear plate 30 contact the rubber buffer pad 33. At this time, turn off the winch 5, then untie the buckle 27 and the rope buckle 40, loosen the bolt 31, open the towing frame 29, and push the gas cylinder 39 out of the gas cylinder tipping frame 2.

[0052] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various deformations or modifications within the scope of the claims, which does not affect the essence of the present invention.

Claims

1. A turnover and lifting device for hydrostatic test of composite material gas cylinders, characterized in that, Comprising: A load-bearing trolley, a vertical support frame, a transverse pulley assembly, a gas cylinder turnover frame, a steel rope group, and a winch; wherein, The gas cylinder turnover frame is in the shape of a long cage, including a gas cylinder support at the lower part and an enclosure structure at the upper part; The vertical support frame is fixedly installed at one end of the load-bearing trolley, and the head of the gas cylinder turnover frame is located at the other end of the load-bearing trolley opposite to the vertical support frame; two second support columns are provided in the middle of the load-bearing trolley, and the tail of the gas cylinder turnover frame is pivotally installed at the top of the second support column; the winch is fixedly installed on the load-bearing trolley; The main body of the transverse pulley assembly is in the shape of a long strip, one end of which is fixedly connected to the top of the vertical support frame, and the other end extends horizontally above the head of the gas cylinder turnover frame; fixed pulleys are respectively provided at both ends of the transverse pulley assembly, and a movable pulley capable of moving horizontally is provided in the middle thereof; the steel rope group is installed between the fixed pulley and the movable pulley, one end of the steel rope is connected to the winch, and the other end is connected to the head of the gas cylinder turnover frame; The distance between the transverse pulley assembly and the second support column is greater than the vertical height of the test gas cylinder; when the winch drives the steel rope to move, the steel rope pulls the gas cylinder turnover frame to rotate around the rotating shaft at the top of the second support column; during this process, the movable pulley moves along with the direction of the steel rope, so that the steel rope between the movable pulley and the gas cylinder turnover frame is basically perpendicular to the axis of the gas cylinder turnover frame.

2. The device according to claim 1, characterized in that The gas cylinder support is in the shape of a U-shaped groove, and is formed by the intersection of multiple strip-shaped longitudinal beams and multiple arc-shaped circumferential beams; the enclosure structure includes a limit frame provided at the tail of the gas cylinder support, multiple belts arranged at intervals on the gas cylinder support, and a traction frame provided at the head of the gas cylinder support; the steel rope is connected to the traction frame.

3. The device according to claim 2, characterized in that, A number of rollers are arranged at intervals on each circumferential beam, and the rollers on each circumferential beam are symmetrically arranged with respect to the central axis of the gas cylinder support; the rollers are fixed on the circumferential beam through bushings, and the rotation direction of each roller is perpendicular to the circumferential beam at its position.

4. The device according to claim 2, characterized in that, The limit frame includes a limit baffle, a limit frame, and a fastening bolt; the limit frame includes a bottom plate and two side plates, the two side plates are oppositely arranged at both ends of the bottom plate, and vertical chutes are respectively provided on the inner side surfaces; both sides of the limit baffle are movably inserted into the vertical chutes and are positioned by the fastening bolts penetrating and installed on the side plates.

5. The device according to claim 2, characterized in that, Taking the longitudinal beams at the uppermost edges on both sides of the gas cylinder support as installation beams, a number of hinge shafts are arranged at intervals on one of the installation beams, and a number of buckles are arranged at intervals on the other installation beam; one end of each belt is respectively connected to the hinge shaft, and the other end is connected to the buckle.

6. The device according to claim 2, wherein The traction frame is arc-shaped, one end of which is connected to an ear plate provided on the longitudinal beam through a hinge shaft, and the other end is connected to another ear plate arranged oppositely through a detachable bolt; a steel rope fixing ring is provided at the highest point in the middle of the traction frame; two first support columns are provided on the load-bearing trolley, and rubber buffer pads are provided at their tops, and the two ear plates are respectively placed on the rubber buffer pads.

7. The device according to claim 1, characterized in that The vertical support frame includes two obliquely supported beams with connected tops, and the bottom ends are fixed on the load-bearing trolley; a foam buffer pad is provided in the middle of the vertical support frame, and a rib plate is obliquely arranged between the vertical support frame and the transverse pulley assembly, and both ends of the rib plate are fixedly connected to form a stable support structure.

8. The device according to claim 1, characterized in that, The main body of the horizontal pulley assembly is a pulley frame with a double-layer splint structure. A chute is provided along the length direction at its waist, and the axle of the movable pulley is installed in the chute.

9. The device according to claim 1, characterized in that, The winch is located below the vertical support frame; a universal wheel is provided at each of the four corner positions at the bottom of the load-bearing flatbed truck.

10. The device according to any one of claims 1 to 9, characterized in that, At the connection position between the horizontal pulley assembly and the vertical support frame, two coaxially arranged first fixed pulleys and a second fixed pulley are provided, and a third fixed pulley is provided at the other end of the horizontal pulley assembly; the steel rope group includes a main rope and a secondary rope; one end of the main rope is connected to the winch. After its middle part bypasses the first fixed pulley and the movable pulley from above, the other end is connected to the gas cylinder turnover frame; one end of the secondary rope is bound and wound around the second fixed pulley. After its middle part bypasses the movable pulley and the third fixed pulley from below, the other end is bound to the axle of the first movable pulley.

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