A hoisting device and hoisting method for slenderness ratio flexible equipment

Abstract

The present invention relates to a lifting device and a lifting method for slender and flexible equipment, comprising a crossbeam, a first lifting ring symmetrically fixed on both ends of the crossbeam, and a second lifting ring symmetrically fixed below the crossbeam, a hook is provided above the crossbeam, a first rope is connected between the hook and the first lifting ring; a pulley is fixedly suspended on the second lifting ring, a second rope is embedded in the wheel groove of the pulley, rope buckles are provided at both ends of the rope buckle, and the rope buckles are fastened to the lifting ears of the equipment; the present invention adopts multi-hanging point lifting to avoid damage to the equipment due to excessive disturbance; the main hoist adopts self-balancing device multi-hanging point lifting, taking into account the stress conditions of the equipment during the lifting and uprighting process, ensuring the lifting safety and economic practicality.

Description

Technical Field

[0001] The invention belongs to the field of equipment hoisting, in particular to the field of slenderness-ratio flexible equipment hoisting. Background Art

[0002] In order to solve the problems of hoisting slender and flexible equipment (such as annular tube reactors, tower pipelines, flares, etc.) in petrochemical and coal chemical plants, as well as the on-site horizontal rotation of equipment (such as the rotation of the lifting lugs to a horizontal state before hoisting), the construction site generally adopts a reinforcement method for hoisting, and adopts horizontal rolling (road timbers or temporary saddles) to solve the equipment rotation; however, the workload of on-site reinforcement is large and needs to be dismantled later. For the hoisting of slender and flexible equipment, temporary reinforcement measures are often used at this stage. If the slenderness ratio of the tower pipeline cannot meet the requirements, the overall hoisting cannot be carried out on site. During the horizontal rotation of the equipment, temporary road timbers or temporary saddles are used; the above situations cannot be operated quickly, and the construction cost is high, and there are many safety hazards. Summary of the invention

[0003] In order to solve the above problems, the present invention achieves the above objectives through the following technical solutions:

[0004] A lifting device and lifting method for slender and flexible equipment, comprising a crossbeam, a first lifting ring symmetrically fixed at both ends of the crossbeam, and a second lifting ring symmetrically fixed below the crossbeam, a hook is provided above the crossbeam, a first rope is connected between the hook and the first lifting ring; a pulley is fixedly suspended on the second lifting ring, a second rope is embedded in the wheel groove of the pulley, rope buckles are provided at both ends of the rope buckle, and the rope buckles are fastened to the lifting ears of the equipment.

[0005] As a further optimization scheme of the present invention, the cross beam is composed of a first beam body arranged at both ends and a plurality of second beam bodies arranged between the first beam bodies, a first flange is provided on the side of the first beam body close to the second beam body, and second flanges are provided at both ends of the second beam body, the first flange and the second flange or adjacent second flanges are connected by bolts, and the first lifting ring and the second lifting ring are both provided on the upper and lower side end faces of the first beam body.

[0006] As a further optimization solution of the present invention, a plurality of ribs are provided in a circular array along the axis between the first flange and the outer side wall of the first beam body and between the second flange and the outer side wall of the second beam body.

[0007] As a further optimization scheme of the present invention, the device also includes a fixing part mounted on the flexible device, and ears are symmetrically provided on both sides of the fixing part, and the ears are located on the horizontal plane of the flexible device; the fixing part includes a U-shaped plate and a connecting plate, and third flanges are respectively provided at both ends of the connecting plate, and the third flanges are fixedly connected to the inner side surface of the U-shaped plate.

[0008] As a further optimization scheme of the present invention, a fixing seat is provided on the outer side of the fixing member and the connecting plate away from the flexible device, and a through hole is provided in the fixing seat along the axial direction of the flexible device; a support plate is provided between adjacent fixing members, and both ends of the support plate are respectively embedded in the through holes of the fixing seat and are bolted to the fixing seat.

[0009] As a further optimization solution of the present invention, the support plate is an elastic plate, and prestress is applied to the support plate in a direction close to the flexible device.

[0010] As a further optimization scheme of the present invention, a supporting device is also provided at the bottom of the flexible device, and the supporting device includes a support plate and tongues symmetrically provided on the support plate. The shape and size of the support plate are the same as the diameter of the tubular object of the flexible device. The tongues are inserted into the through holes on the nearest fixing parts and are connected to the fixing seat bolts.

[0011] A method for hoisting a flexible device with a slenderness ratio, comprising the following steps:

[0012] Step 1: Make a fixing piece, hanging ears arranged on the left and right sides of the fixing piece, and a fixing seat arranged on the fixing piece, sleeve a plurality of fixing pieces on the flexible device, and fasten the fixing piece to the flexible device using a connecting rod;

[0013] Step 2: Make a support plate and a supporting device, and fix the support plate on an adjacent fixing member, and fix the support plate on a fixing seat through a tongue on the support plate; then apply prestress to the support plate in a direction close to the flexible device;

[0014] Step 3: Determine the length of the support beam according to the length of the flexible device, thereby determining the number of second beam bodies, and fix at least one second beam body to the first beam body through a flange;

[0015] Step 4: hoist the four rope buckles on the beam below the main crane hook to the two sets of lifting ears on one side of the flexible device, and install the rope buckle of the beam below the auxiliary crane hook on the lifting ears on the other side of the flexible device;

[0016] Step 5: The hook of the main crane and the auxiliary crane lift at the same time to lift the flexible device off the ground, then the auxiliary crane stops lifting and the main crane continues lifting until the flexible device is erected to complete the lifting.

[0017] The beneficial effects of the present invention are:

[0018] The present invention adopts multi-hanging point hoisting to avoid damage to the equipment due to excessive disturbance; the main hoist adopts multi-hanging point hoisting with a self-balancing device, taking into account the stress conditions of the equipment during the lifting and erecting process, ensuring the safety and economic practicality of the hoisting;

[0019] The on-site reinforcement measures during the hoisting process of slenderness ratio equipment are avoided, and the main hoist adopts a self-balancing balance beam device to ensure the force stability of the equipment during the entire hoisting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 The present invention Figure 1 A local enlarged schematic diagram of the middle A;

[0022] Figure 3 is a side schematic diagram of the fixing member in the present invention;

[0023] Figure 4 The present invention Figure 3 Schematic diagram of the cross-section structure at CC;

[0024] Figure 5 The present invention Figure 3 A schematic diagram of the local enlarged structure at B in FIG.

[0025] Figure 6 It is a schematic diagram of the steps of the method for hoisting the slenderness ratio flexible device in the present invention;

[0026] In the figure: 1, cross beam; 11, first lifting ring; 12, second lifting ring; 13, first rope; 14, pulley; 15, first beam body; 151, first flange; 16, second beam body; 161, second flange; 2, second rope; 21, rope buckle; 3, rib plate; 4, fixing piece; 41, lifting ear; 42, U-shaped plate; 43, connecting plate; 431, third flange; 5, fixing seat; 51, through hole; 6, supporting plate; 7, supporting device; 71, supporting plate; 72, plug tongue. DETAILED DESCRIPTION

[0027] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0028] like Figures 1 to 5 The hoisting device for slenderness ratio flexible equipment shown in the figure comprises a crossbeam 1,

[0029] A first lifting ring 11 is symmetrically fixed on both ends of the beam 1, and a second lifting ring 12 is symmetrically fixed below the beam 1. A hook is provided above the beam 1, and a first rope 13 is connected between the hook and the first lifting ring 11; a pulley 14 is fixedly suspended on the second lifting ring 12, and a second rope 2 is embedded in the wheel groove of the pulley 14. Both ends of the second rope 2 are provided with rope buckles 21; when in use, the rope buckle 21 is fastened to the lifting ear of the equipment, and then the flexible device is slowly lifted by using the hook of the crane;

[0030] Furthermore, the crossbeam 1 is composed of a first beam body 15 arranged at both ends and a plurality of second beam bodies 16 arranged between the first beam bodies 15, wherein a first flange 151 is provided on a side of the first beam body 15 close to the second beam body 16, and second flanges 161 are provided at both ends of the second beam body 16, and the first flange 151 and the second flange 161 or the adjacent second flanges 161 are connected by bolts, and the first lifting ring 11 and the second lifting ring 12 are both arranged on the upper and lower side end surfaces of the first beam body 15; when in use, the length of the entire crossbeam can be determined according to the length of the flexible equipment to be lifted, and then the number of the second beam bodies can be determined. If the number of the second beam bodies is 1, the second flanges on the left and right sides of the second beam body are connected to the first flange of the first beam body by bolts; such a combined structure can achieve a telescopic effect, and crossbeams of different lengths can be combined for equipment of different lengths, thereby avoiding the need to manufacture crossbeams of different lengths for standby, thereby reducing production costs and improving use efficiency;

[0031] Furthermore, in order to improve the reliability of the structure, a plurality of ribs 3 are provided in a circular array along the axis between the first flange 151 and the outer wall of the first beam body 15 and between the second flange 161 and the outer wall of the second beam body 16; the ribs can play the role of reinforcing ribs;

[0032] Furthermore, welding is generally prohibited on the main body of many flexible equipment. Even if welding of lifting lugs is allowed, heat treatment, non-destructive testing, water pressure testing and other processes are required after welding, and the tower wall at the welding lifting lug position must be thickened, and high-altitude welding and steel consumption are large; therefore, a set of fixing parts 4 arranged on the flexible equipment is designed, and lifting lugs 41 are symmetrically arranged on both sides of the fixing part 4, and the lifting lugs 41 are located on the horizontal plane of the flexible equipment; wherein the fixing part 4 includes a U-shaped plate 42 and a connecting plate 43, and the two ends of the connecting plate 43 are respectively provided with third flanges 431, and the third flange 431 is fixedly connected to the inner side surface of the U-shaped plate 42; through this structure, it is possible to effectively avoid illegal welding on tower-type chemical pressure vessels, or even if welding of lifting lugs is allowed, the cumbersome processes of heat treatment, non-destructive testing and water pressure testing after welding of the lifting lugs are omitted; it is more convenient to use;

[0033] Furthermore, when the crane is lifting the flexible device, the body of the flexible device is prone to deformation, especially between adjacent fixing parts at a long distance, which is prone to excessive deflection, bending instability, or plastic deformation. In order to solve this problem, a fixing seat 5 is provided on the outer side of the U-shaped plate 42 and the connecting plate 43 away from the flexible device, and a through hole 51 is penetrated in the fixing seat 5 along the axial direction of the flexible device; and a support plate 6 is provided between adjacent fixing parts 4, and the two ends of the support plate 6 are respectively embedded in the through hole 51 of the fixing seat 5, and are bolted to the fixing seat 5; when in use, the support plate 6 can be an elastic plate, and prestress is applied to the support plate 6 in the direction close to the flexible device, so that the prestress can offset most of the deformation of the flexible device when it is tilted, so that the flexible device will be safer when lifting;

[0034] Furthermore, since the fixing member mainly provides support in the radial direction, when the entire flexible device is close to being erected, the supporting force of the fixing member in the axial direction is easily insufficient and it is easy to slip, thereby causing the flexible device to fall and be damaged, resulting in serious economic losses. In order to solve this problem, on the basis of the above structure, a supporting device 7 is also provided at the bottom of the flexible device, and the supporting device 7 includes a support plate 71 and tongues 72 symmetrically provided on the support plate 71. The shape and size of the support plate 71 are the same as the diameter of the tubular object of the flexible device. During assembly, the tongue 72 is inserted into the through hole 51 on the nearest fixing member 4 and bolted to the fixing seat 5. In this way, a supporting force can be provided to the flexible device through the support plate, and the support plate is fixedly connected to the nearest fixing member, and adjacent fixing members are fixedly connected through the support plate. Therefore, an integral fixing system can be formed through the fixing member, the support plate, the support plate and other related structures to avoid relative sliding of the fixing member when the flexible device is erected.

[0035] like Figure 6 A method for hoisting a slender-ratio flexible device as shown comprises the following steps;

[0036] Step 1: Make a fixing member 4, hanging ears 41 arranged on the left and right sides of the fixing member 4, and a fixing seat 5 arranged on the fixing member 4, sleeve a plurality of fixing members 4 on the flexible device, and fasten the fixing member 4 to the flexible device using a connecting plate 43;

[0037] Step 2: Make a support plate 6 and a supporting device 7, and fix the support plate 6 on the adjacent fixing member 4, and fix the support plate 71 on the fixing seat 5 through the insert tongue 72 on the support plate; then apply prestress to the support plate 6 in the direction close to the flexible device;

[0038] Step 3: Determine the length of the crossbeam 1 according to the length of the flexible device, thereby determining the number of the second beam bodies 16, and fix at least one second beam body 16 to the first beam body 15 via a flange;

[0039] Step 4: hoist the four rope buckles 21 on the beam 1 below the main crane hook to the two sets of lifting ears 41 on one side of the flexible device, and install the rope buckle 21 of the beam 1 below the auxiliary crane hook on the lifting ear 41 on the other side of the flexible device;

[0040] Step 5: The hook of the main crane and the auxiliary crane lift at the same time to lift the flexible device off the ground, then the auxiliary crane stops lifting and the main crane continues lifting until the flexible device is erected to complete the lifting.

[0041] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A lifting device for slenderness ratio flexible equipment, Features: The device comprises a crossbeam (1), first lifting rings (11) symmetrically fixed at both ends of the crossbeam (1), and a second lifting ring (12) symmetrically fixed at the bottom of the crossbeam (1); a lifting hook is provided above the crossbeam (1), and a first rope (13) is connected between the lifting hook and the first lifting ring (11); a pulley (14) is fixedly suspended on the second lifting ring (12), a second rope (2) is embedded in the wheel groove of the pulley (14), and rope buckles (21) are provided at both ends of the second rope (2), and the rope buckles (21) are fastened to the lifting ears of the flexible device; The cross beam (1) is composed of a first beam body (15) arranged at both ends and a plurality of second beam bodies (16) arranged between the first beam bodies (15); a first flange (151) is provided on a side of the first beam body (15) close to the second beam body (16); second flanges (161) are provided at both ends of the second beam body (16); the first flange (151) and the second flange (161) or adjacent second flanges (161) are connected by bolts; and the first lifting ring (11) and the second lifting ring (12) are both provided on the upper and lower side end surfaces of the first beam body (15); The lifting device further comprises a fixing member (4) sleeved on the flexible device, and lifting ears (41) are symmetrically provided on both sides of the fixing member (4), and the lifting ears (41) are located on the horizontal plane of the flexible device; the fixing member (4) comprises a U-shaped plate (42) and a connecting plate (43), and third flanges (431) are respectively provided at two ends of the connecting plate (43), and the third flanges (431) are fixedly connected to the inner side surface of the U-shaped plate (42); A fixing seat (5) is provided on the outer side of the U-shaped plate (42) and the connecting plate (43) away from the flexible device, and a through hole (51) is provided in the fixing seat (5) along the axial direction of the flexible device; a support plate (6) is provided between adjacent fixing members (4), and two ends of the support plate (6) are respectively embedded in the through hole (51) of the fixing seat (5); The support plate (6) is an elastic plate, and prestress is applied to the support plate (6) in a direction close to the flexible device; The bottom of the flexible device is further provided with a supporting device (7), the supporting device (7) comprising a supporting plate (71) and an inserting tongue (72) symmetrically arranged on the supporting plate (71), the shape and size of the supporting plate (71) being the same as the diameter of the tubular object of the flexible device, the inserting tongue (72) being inserted into a through hole (51) on the nearest fixing member (4) and being bolted to the fixing seat (5).

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