A kind of lifting equipment for water conservancy and hydropower engineering and construction method thereof

Abstract

The present invention relates to the technical field of lifting equipment, specifically to a lifting equipment for water conservancy and hydropower engineering and a construction method thereof, including a lifting component, two gripping components distributed on the left and right are provided at the bottom of the lifting component, an anti-droop component is provided between the two gripping components on the left and right, two positioning components distributed on the left and right are provided at the bottom of the lifting component, and end plates are fixedly installed on the left and right ends of the front and rear guide rails, and the number of end plates is two. While the gripping component is used to lift and grip the water conservancy pipeline, the gravity downward pressure of the water conservancy pipeline on the gripping component is utilized to increase the pressure inside the anti-droop cylinder of the anti-droop component, so that the multiple rubber suction cups in the anti-droop component have an adsorption and extraction effect on the middle part of the pipeline, ensuring that the pipeline will not break due to sagging in the middle during the lifting process.

Description

Technical Field

[0001] The invention relates to the technical field of lifting equipment, in particular to a lifting equipment for water conservancy and hydropower engineering and a construction method thereof. Background Art

[0002] Water conservancy and hydropower engineering mainly studies the basic knowledge and skills of water resources, hydraulic structures, hydraulics and fluid dynamics, and water conservancy engineering technology, and conducts survey, planning, design, construction, and management of water conservancy and hydropower engineering. For example, the construction of hydraulic structures such as hydropower stations, dams, and gates, and the design of river regulation projects. During the construction of water conservancy and hydropower projects, lifting equipment is usually required to lift and transport materials such as pipes.

[0003] According to a Chinese patent application with publication number CN114506763A, a lifting device for water conservancy and hydropower engineering and a construction method thereof are disclosed. The lifting device can be adjusted according to the length of the pipeline during the pipeline construction process, and can protect the pipeline at the moment of lifting the pipeline to prevent pipeline wear and improve work efficiency. However, the above-mentioned lifting device for water conservancy and hydropower engineering only lifts the two ends of the pipeline by grasping, and the lifting effect is very good for some shorter pipelines. However, since the device does not have the function of supporting the middle part of the pipeline, when lifting some longer pipelines, the middle part of the pipeline lacks support, resulting in the middle part of the pipeline being prone to bending and sagging, and even cracking and breaking due to excessive sagging of the middle part of the pipeline. For this reason, we propose a lifting device for water conservancy and hydropower engineering and a construction method thereof to solve the above-mentioned technical problems. Summary of the invention

[0004] The present invention provides the following technical solution: A lifting device for water conservancy and hydropower engineering, comprising a lifting component;

[0005] A gripping component, wherein two gripping components are arranged at the bottom of the lifting component and are distributed on the left and right sides, and the gripping components are used for lifting the two ends of the water conservancy pipeline;

[0006] An anti-drooping component is provided between the left and right gripping components, and the anti-drooping component is used to limit the position in the middle of the water conservancy pipeline;

[0007] Positioning components: two positioning components distributed on the left and right are provided at the bottom of the lifting component, and the positioning components are used to limit the water conservancy pipeline.

[0008] As a preferred solution of the present invention, the lifting component includes a lifting frame, guide rails are fixedly installed on the front and back sides of the lifting frame, two guide blocks distributed front and rear are provided on the left and right parts of the lifting frame, two sliding pins distributed left and right are fixedly installed on the side faces of the front and rear guide blocks that are far away from each other, the sliding pins are slidably installed inside the track groove of the guide rail, L-shaped connecting angle plates are fixedly installed on the side faces of the front and rear guide blocks that are close to each other, the grasping component is fixedly installed between the front and rear L-shaped connecting angle plates, and two electric telescopic rods distributed left and right are fixedly installed on the bottom of the lifting frame, and the output rod ends of the electric telescopic rods are fixedly connected to the upper parts of the side walls of the front and rear L-shaped connecting angle plates through connecting angle irons.

[0009] As a preferred solution of the present invention, the gripping component includes a boosting block fixedly installed between two front and rear L-shaped connecting angle plates, the interior of the boosting block is a cavity structure, and a plurality of air grooves are provided on the top of the boosting block, the air grooves are connected to the cavity inside the boosting block, the inner walls of the plurality of air grooves are slidably mounted with plungers, the outer walls of the plungers are provided with sealing rings, the inner walls of the air grooves and the outer walls of the plungers are sealed by sealing rings, the bottom height of the plungers is greater than the bottom height of the air grooves, a gripping round head is fixedly installed on the top of the plungers, a boosting hole is penetrated through the side of the boosting block away from the lifting frame, and a first boosting pipe is fixedly installed around the opening of the boosting hole.

[0010] As a preferred solution of the present invention, a return spring is fixedly installed between the bottom of the plunger and the bottom wall of the boosting block.

[0011] As a preferred scheme of the present invention, the anti-drooping component includes an anti-drooping cylinder fixedly installed inside the lifting frame, the anti-drooping cylinder passes through the top and bottom of the lifting frame, and a partition is fixedly installed on the inner wall of the anti-drooping cylinder, a sliding rod is slidably installed inside the partition, and the sliding rod movably passes through the top and bottom of the partition, an upper piston is fixedly installed on the top of the sliding rod, and a lower piston is fixedly installed on the bottom of the sliding rod, the outer walls of the upper piston and the lower piston are both in contact with the inner wall of the anti-drooping cylinder, and the left and right parts of the outer wall of the anti-drooping cylinder are penetrated by air inlet holes, and joints are fixedly installed on the periphery of the opening of the air inlet holes, the air inlet hole is located at the top of the partition, and the air inlet hole is located at the bottom of the upper piston, a second boosting pipe is fixedly installed on the end of the joint, and a corrugated telescopic tube is fixedly installed between the second boosting pipe and the first boosting pipe.

[0012] As a preferred solution of the present invention, two hollow sliding columns are slidably installed at the bottom of the anti-drooping cylinder, and the hollow sliding columns movably penetrate the bottom of the anti-drooping cylinder and extend into the interior thereof, and the two hollow sliding columns are symmetrically distributed about the center of the anti-drooping cylinder, and an adsorption platform is fixedly installed at the bottom of the two hollow sliding columns, and a plurality of rubber suction cups equidistantly distributed on the left and right are fixedly installed at the bottom of the adsorption platform, and the interior of the rubber suction cup is connected to the interior of the adsorption platform, and the interior of the adsorption platform is connected to the interior of the two hollow sliding columns, and two limit blocks are fixedly installed on the inner wall of the anti-drooping cylinder, and the two limit blocks are symmetrically distributed about the center of the anti-drooping cylinder, and the tops of the two limit blocks abut against the bottom of the lower piston.

[0013] As a preferred solution of the present invention, a first constant pressure hole is opened through the left part of the outer wall of the anti-drooping cylinder, the first constant pressure hole is located at the bottom of the partition, and the first constant pressure hole is located at the top of the lower piston, a second constant pressure hole is opened through the top of the anti-drooping cylinder, and a dust cover is fixedly installed on the top of the anti-drooping cylinder, and the dust cover is located outside the opening of the second constant pressure hole.

[0014] As a preferred solution of the present invention, the positioning component includes a sliding seat fixedly mounted on the surface of the guide rail, the sliding seat is located on a side surface away from the front and rear guide rails, the sliding seats are four in number, and positioning light rods are slidably mounted inside the sliding seats, wherein a connecting seat is commonly fixedly mounted on the outer walls of the two positioning light rods in the front and rear directions, a positioning pressure plate is fixedly mounted on the bottom of the connecting seat, the positioning pressure plate is located on the top of the booster block, the periphery of the positioning light rods is sleeved with a tensioning spring, the tensioning spring is fixedly mounted between the bottom of the sliding seat and the top of the connecting seat, and the bottom of the positioning light rods is fixedly mounted with an arc-shaped bottom plate.

[0015] As a preferred solution of the present invention, the left and right ends of the two front and rear guide rails are commonly fixedly installed with end plates, the number of the end plates is two, and the side surfaces of the two end plates that are close to each other are fixedly installed with suspension rings, the peripheries of the two suspension rings are fixedly installed with catenaries, and the ends of the two catenaries that are close to each other are commonly fixedly installed with connecting ear plates.

[0016] A construction method of a lifting device for a water conservancy and hydropower project comprises the following steps:

[0017] S1. Connect the connecting ear plate to the hoisting end of the crane;

[0018] S2. After the hoisting end of the crane is connected to the connecting ear plate, the equipment is driven to move to the working position and released downward. During the downward release of the equipment, the bottoms of the four arc-shaped bottom plates first contact the ground. Then, as the equipment continues to be released downward, the arc-shaped bottom plates are supported by the ground and will not continue to move. As the equipment continues to move downward, the positioning light rod slides upward relative to the inner wall of the sliding seat, further causing the connecting seat and the positioning pressure plate to move upward relative to the sliding seat, causing the tensioning spring to compress and accumulate force.

[0019] S3. When the two booster blocks of the equipment move to the two ends of the water conservancy pipeline, the further release of the equipment is stopped, and the two electric telescopic rods are started. The output rods of the two electric telescopic rods move toward each other, driving the two L-shaped connecting angle plates on the left and right to move toward the middle. The movement of the L-shaped connecting angle plates toward the middle further drives the gripping component to move toward the middle, so that the gripping component extends into the interior of the water conservancy pipeline. When the equipment moves downward until the two booster blocks are located at the two ends of the water conservancy pipeline, the bottom of the rubber suction cup just contacts the top of the outer wall of the pipeline;

[0020] S4. The hoist winch is fully rolled up to winch the equipment upward, so that the two boosting blocks on the left and right move upward until the top of the gripping round head contacts the top wall of the pipe. As the boosting block continues to move upward, the gripping round head is pressed downward by the gravity of the pipe, pushing the plunger to move downward along the inner wall of the air groove, causing the compression of the return spring. The downward movement of the plunger compresses the air inside the air groove and the cavity of the boosting block. The compressed air enters the interior of the first boosting pipe through the boosting hole, and then is input into the interior of the anti-drooping cylinder through the bellows expansion pipe, the second boosting pipe, the joint and the rubber suction cup, resulting in an increase in the air pressure between the top of the partition and the bottom of the upper piston, pushing the upper piston upward. During the period when the upper piston is lifted upward, the lower piston is driven upward by the sliding rod, resulting in a negative pressure effect in the space inside the anti-drooping cylinder and at the bottom of the lower piston. The negative pressure effect is transmitted to the rubber suction cup through the hollow sliding column and the adsorption platform, resulting in the rubber suction cup being adsorbed on the upper outer wall of the pipe;

[0021] S5. When the hoisting device at the winch end of the crane moves upward, the compressed tensioning spring gradually rebounds, pushing the positioning rod, the connecting seat and the positioning pressure plate downward until the equipment moves up to the bottom of the arc-shaped bottom plate and separates from the ground. Then, the positioning pressure plate contacts the top of the outer wall of the pipe under the action of the rebound force of the tensioning spring, thereby forming an upper and lower clamp on the pipe with the gripping round head.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. In the present invention, while the hydraulic pipeline is lifted and gripped by the gripping component, the gravity downward pressure of the hydraulic pipeline on the gripping component is utilized to increase the pressure inside the anti-drooping cylinder of the anti-drooping component, so that the multiple rubber suction cups in the anti-drooping component have an adsorption and extraction effect on the middle part of the pipeline, thereby ensuring that the pipeline will not break due to sagging in the middle part during the lifting process.

[0024] 2. In the present invention, when the upper winding device at the hoisting end of the crane moves upward, the compressed tensioning spring gradually rebounds, pushing the positioning light rod, the connecting seat and the positioning pressure plate to move downward, until the equipment moves up to the bottom of the arc-shaped bottom plate and separates from the ground. The positioning pressure plate is pressed against the top of the outer wall of the pipe under the action of the rebound force of the tensioning spring, thereby forming an upper and lower clamping effect with the grasping round head, further ensuring the stability of the pipe lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The structure of the present invention is schematically shown Figure 1 ;

[0026] Figure 2 The structure of the present invention is schematically shown Figure 2 ;

[0027] Figure 3 For the present invention Figure 2 Schematic diagram of the local structure;

[0028] Figure 4 For the present invention Figure 2 A schematic diagram of the enlarged structure of part A;

[0029] Figure 5 For the present invention Figure 3 A schematic diagram of the enlarged structure of part B;

[0030] Figure 6 It is a schematic diagram of the cross-sectional structure of the booster block and the anti-droop cylinder in the present invention;

[0031] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure of part C;

[0032] Figure 8 It is a schematic diagram of the internal detailed structure of the anti-sagging cylinder in the present invention.

[0033] In the figure: 1, lifting component; 2, gripping component; 3, anti-drooping component; 4, positioning component; 5, catenary; 6, connecting ear plate; 101, lifting frame; 102, guide rail; 103, guide block; 104, sliding pin; 105, L-shaped connecting angle plate; 106, electric telescopic rod; 107, end plate; 108, suspension ring; 201, boosting block; 202, air groove; 203, plunger; 204, gripping round head; 205, reset spring; 206, boosting hole; 207, first boosting pipe; 301, anti-drooping cylinder; 3001, Air inlet; 3002, first constant pressure hole; 302, partition; 303, slide rod; 304, upper piston; 305, joint; 306, second boost pipe; 307, bellows expansion pipe; 308, lower piston; 309, hollow slide column; 3010, adsorption platform; 3011, rubber suction cup; 3012, limit block; 3013, second constant pressure hole; 3014, dust cover; 401, sliding seat; 402, positioning light rod; 403, connecting seat; 404, positioning pressure plate; 405, tensioning spring; 406, arc bottom plate. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1 - Figure 8 The technical solution provided by the present invention specifically includes the following embodiments:

[0036] Embodiment 1: A lifting device for water conservancy and hydropower engineering, comprising a lifting component 1, two gripping components 2 distributed on the left and right are provided at the bottom of the lifting component 1, an anti-drooping component 3 is provided between the two gripping components 2 on the left and right, two positioning components 4 distributed on the left and right are provided at the bottom of the lifting component 1, the left and right ends of the front and rear guide rails 102 are both fixedly installed with end plates 107, the number of end plates 107 is two, and the side surfaces of the two end plates 107 that are close to each other are both fixedly installed with suspension rings 108, the peripheries of the two suspension rings 108 are both fixedly installed with catenaries 5, and the ends of the two catenaries 5 that are close to each other are jointly fixedly installed with connecting ear plates 6;

[0037] The lifting component 1 includes a lifting frame 101, and the front and back sides of the lifting frame 101 are fixedly installed with guide rails 102, and the left and right parts of the lifting frame 101 are provided with two guide blocks 103 distributed front and back, and the side of the front and rear guide blocks 103 that are far away from each other are fixedly installed with two sliding pins 104 distributed left and right, and the sliding pins 104 are slidably installed inside the track groove of the guide rail 102, and the side of the front and rear guide blocks 103 that are close to each other are fixedly installed with L-shaped connecting angle plates 105, and the gripping component 2 is fixedly installed between the front and rear L-shaped connecting angle plates 105, and the bottom of the lifting frame 101 is fixedly installed with two electric telescopic rods 106 distributed left and right, and the output rod ends of the electric telescopic rods 106 are fixedly connected to the upper parts of the side walls of the front and rear L-shaped connecting angle plates 105 through connecting angle irons;

[0038] Specifically, the present embodiment drives the device to the working position after the winch end of the crane is connected to the connecting ear plate 6, and the device is released downward. When the two gripping components 2 on the left and right of the device are moved to the two end positions of the pipeline, the two electric telescopic rods 106 are started, and the output rods of the two electric telescopic rods 106 move toward each other, driving the two L-shaped connecting angle plates 105 on the left and right to move toward the middle. The movement of the L-shaped connecting angle plates 105 toward the middle further drives the gripping component 2 to move toward the middle, so that the gripping component 2 extends into the interior of the water conservancy pipeline to grip the pipeline.

[0039] Embodiment 2: The gripping component 2 includes a boosting block 201 fixedly installed between two front and rear L-shaped connecting angle plates 105, the interior of the boosting block 201 is a cavity structure, and a plurality of air grooves 202 are provided on the top of the boosting block 201, the air grooves 202 are connected to the cavity inside the boosting block 201, and plungers 203 are slidably installed on the inner walls of the plurality of air grooves 202, and a sealing ring is provided on the outer wall of the plunger 203, and the inner wall of the air groove 202 and the outer wall of the plunger 203 are sealed by a sealing ring, the bottom height of the plunger 203 is greater than the bottom height of the air groove 202, and a gripping round head 204 is fixedly installed on the top of the plunger 203, and a boosting hole 206 is penetrated through the side of the boosting block 201 away from the lifting frame 101, and a first boosting pipe 207 is fixedly installed on the periphery of the opening of the boosting hole 206;

[0040] The anti-drooping component 3 includes an anti-drooping cylinder 301 fixedly installed inside the lifting frame 101, the anti-drooping cylinder 301 passes through the top and bottom of the lifting frame 101, and a partition 302 is fixedly installed on the inner wall of the anti-drooping cylinder 301, a slide bar 303 is slidably installed inside the partition 302, and the slide bar 303 movably passes through the top and bottom of the partition 302, an upper piston 304 is fixedly installed on the top of the slide bar 303, and a lower piston 308 is fixedly installed on the bottom of the slide bar 303, and the upper piston 304 and the lower piston 308 are fixedly installed. The outer wall of the anti-droop cylinder 301 is fitted with the inner wall of the anti-droop cylinder 301, and the left and right outer wall of the anti-droop cylinder 301 are penetrated with air inlet holes 3001, and the outer periphery of the opening of the air inlet hole 3001 is fixedly installed with a joint 305, the air inlet hole 3001 is located at the top of the partition plate 302, and the air inlet hole 3001 is located at the bottom of the upper piston 304, and the end of the joint 305 is fixedly installed with a second boosting pipe 306, and a corrugated telescopic pipe 307 is fixedly installed between the second boosting pipe 306 and the first boosting pipe 207;

[0041] Two hollow slide columns 309 are slidably installed at the bottom of the anti-drooping cylinder 301. The hollow slide columns 309 moveably penetrate the bottom of the anti-drooping cylinder 301 and extend into the interior thereof. The two hollow slide columns 309 are symmetrically distributed about the center of the anti-drooping cylinder 301. An adsorption platform 3010 is fixedly installed at the bottom of the two hollow slide columns 309. A plurality of rubber suction cups 3011 equidistantly distributed on the left and right are fixedly installed at the bottom of the adsorption platform 3010. The interior of the rubber suction cup 3011 is connected to the interior of the adsorption platform 3010, and the interior of the adsorption platform 3010 is connected to the interior of the two hollow slide columns 309. Two limit blocks 3012 are fixedly installed on the inner wall of the anti-drooping cylinder 301. The two limit blocks 3012 are symmetrically distributed about the center of the anti-drooping cylinder 301, and the tops of the two limit blocks 3012 abut against the bottom of the lower piston 308.

[0042] Specifically, in this embodiment, after the two booster blocks 201 of the device move to the two end positions of the water conservancy pipeline, the further release of the device is stopped, and the two electric telescopic rods 106 are started. The output rods of the two electric telescopic rods 106 move toward each other, driving the two left and right L-shaped connecting angle plates 105 to move toward the middle. The movement of the L-shaped connecting angle plates 105 toward the middle further drives the gripping component 2 to move toward the middle, so that the gripping component 2 extends into the interior of the water conservancy pipeline. When the device moves downward until the two booster blocks 201 are located at the two ends of the water conservancy pipeline, the bottom of the rubber suction cup 3011 just contacts the top of the outer wall of the pipeline, and the winch of the crane is fully rolled up to lift the device upward. The winch moves the left and right booster blocks 201 upward until the top of the gripping round head 204 contacts the top wall of the pipe. As the booster block 201 continues to move upward, the gripping round head 204 is pressed downward by the gravity of the pipe, pushing the plunger 203 to move downward along the inner wall of the air groove 202. The downward movement of the plunger 203 compresses the air in the air groove 202 and the cavity of the booster block 201. The compressed air enters the first booster pipe 207 through the boosting hole 206, and then enters the interior of the anti-droop cylinder 301 through the bellows telescopic tube 307, the second booster pipe 306, the joint 305 and the rubber suction cup 3011, guiding The air pressure between the top of the partition 302 and the bottom of the upper piston 304 increases, pushing the upper piston 304 upward. During the period when the upper piston 304 is pushed upward, the lower piston 308 is driven upward by the sliding rod 303, resulting in a negative pressure effect in the space inside the anti-droop cylinder 301 and located at the bottom of the lower piston 308. The negative pressure effect is transmitted to the rubber suction cup 3011 through the hollow sliding column 309 and the adsorption platform 3010, causing the rubber suction cup 3011 to be adsorbed on the upper part of the outer wall of the pipe. It should be noted that during the period when the upper winding device at the hoisting end of the crane moves upward, the anti-droop cylinder 301 is also driven upward by the lifting frame 101. During this period, Due to the gravity of the adsorption platform 3010, the adsorption platform 3010 will not move upward during the upward movement of the anti-drooping cylinder 301, that is, the anti-drooping cylinder 301 moves upward along the two hollow sliding columns 309 until the plunger 203 is completely compressed downward, and the anti-drooping cylinder 301 just moves to the top limit of the hollow sliding column 309. Then, as the anti-drooping cylinder 301 continues to move upward, the adsorption platform 3010 and multiple rubber suction cups 3011 are driven upward through the two hollow sliding columns 309 to adsorb and extract the middle part of the pipeline, ensuring that the pipeline will not break due to sagging in the middle during the lifting process.

[0043] Furthermore, a return spring 205 is fixedly installed between the bottom of the plunger 203 and the bottom wall of the boost block 201. When the plunger 203 moves downward along the inner wall of the air groove 202, the return spring 205 is compressed and accumulates force, so that after the lifting operation is completed, the rebound force of the return spring 205 can drive the plunger 203 to move upward along the inner wall of the air groove 202 and return to its original position for subsequent use.

[0044] Furthermore, a first constant pressure hole 3002 is formed through the left portion of the outer wall of the anti-droop cylinder 301, and the first constant pressure hole 3002 is located at the bottom of the partition 302, and the first constant pressure hole 3002 is located at the top of the lower piston 308. A second constant pressure hole 3013 is formed through the top of the anti-droop cylinder 301, and a dust cover 3014 is fixedly installed on the top of the anti-droop cylinder 301, and the dust cover 3014 is located at the periphery of the opening of the second constant pressure hole 3013. When the lower piston 308 moves upward along the inner wall of the anti-droop cylinder 301, it will compress the pressure at The air inside the top space of the lower piston 308 is compressed and discharged through the first constant pressure hole 3002, thereby ensuring that the pressure in the top area of ​​the lower piston 308 and the external pressure of the anti-sagging cylinder 301 are constant, thereby not causing unnecessary resistance to the upward movement of the lower piston 308, and making it easier to move the lower piston 308 upward. During the upward movement of the upper piston 304, the air inside the top space thereof is compressed, and the compressed air is discharged through the second constant pressure hole 3013 and the dust cover 3014, thereby making it easier to move the upper piston 304 upward.

[0045] Embodiment 3: The positioning component 4 includes a sliding seat 401 fixedly mounted on the surface of the guide rail 102, the sliding seat 401 is located on a side surface away from the front and rear guide rails 102, there are four sliding seats 401, and a positioning light rod 402 is slidably mounted inside the sliding seat 401, wherein a connecting seat 403 is fixedly mounted on the outer wall of the two positioning light rods 402 in the front and rear directions, and a positioning pressure plate 404 is fixedly mounted at the bottom of the connecting seat 403, and the positioning pressure plate 404 is located at the top of the booster block 201, and the periphery of the positioning light rod 402 is sleeved with a tensioning spring 405, and the tensioning spring 405 is fixedly mounted between the bottom of the sliding seat 401 and the top of the connecting seat 403, and the bottom of the positioning light rod 402 is fixedly mounted with an arc bottom plate 406;

[0046] Specifically, the hoisting end of the crane is connected to the connecting ear plate 6 and then the device is driven to move to the working position, and the device is released downward. During the downward release of the device, the bottoms of the four arc-shaped bottom plates 406 first contact the ground, and then the arc-shaped bottom plates 406 are supported by the ground and will not continue to move as the device continues to move downward. As the device continues to move downward, the positioning light rod 402 slides upward relative to the inner wall of the sliding seat 401, further making the connecting seat 403 and the positioning pressure plate 404 relative to the sliding seat 401. 1 moves upward, causing the tension spring 405 to compress and accumulate force. During the upward movement of the hoisting device at the hoisting end, the compressed tension spring 405 gradually rebounds, pushing the positioning light rod 402, the connecting seat 403 and the positioning pressure plate 404 to move downward, until the equipment moves up to the bottom of the arc-shaped bottom plate 406 and separates from the ground. The positioning pressure plate 404 is pressed against the top of the outer wall of the pipeline under the action of the rebound force of the tension spring 405, thereby forming an upper and lower clamping effect with the grasping round head 204, further ensuring the stability of pipeline lifting.

[0047] A construction method of a lifting device for a water conservancy and hydropower project comprises the following steps:

[0048] S1, connect the connecting ear plate 6 to the hoisting end of the crane;

[0049] S2. After the hoisting end of the crane is connected to the connecting ear plate 6, the device is driven to move to the working position and released downward. During the downward release of the device, the bottoms of the four arc-shaped bottom plates 406 first contact the ground. Then, as the device continues to be released downward, the arc-shaped bottom plates 406 are supported by the ground and will not continue to move. As the device continues to move downward, the positioning light rod 402 slides upward relative to the inner wall of the sliding seat 401, further causing the connecting seat 403 and the positioning pressure plate 404 to move upward relative to the sliding seat 401, causing the tensioning spring 405 to compress and accumulate force.

[0050] S3. When the two booster blocks 201 of the device move to the two ends of the water conservancy pipeline, the device is stopped from being released further, and the two electric telescopic rods 106 are started. The output rods of the two electric telescopic rods 106 move toward each other, driving the two left and right L-shaped connecting angle plates 105 to move toward the middle. The movement of the L-shaped connecting angle plates 105 toward the middle further drives the gripping component 2 to move toward the middle, so that the gripping component 2 extends into the interior of the water conservancy pipeline. When the device moves downward until the two booster blocks 201 are located at the two ends of the water conservancy pipeline, the bottom of the rubber suction cup 3011 just contacts the top of the outer wall of the pipeline.

[0051] S4. The hoist winch is fully rolled up to winch the equipment upward, so that the two booster blocks 201 on the left and right move upward until the top of the gripping round head 204 contacts the top wall of the pipe. As the booster block 201 continues to move upward, the gripping round head 204 is pressed down by the gravity of the pipe, pushing the plunger 203 to move downward along the inner wall of the air groove 202, causing the return spring 205 to be compressed. The plunger 203 moves downward, compressing the air in the air groove 202 and the cavity of the booster block 201. The compressed air enters the interior of the first boosting pipe 207 through the boosting hole 206, and then enters the interior of the anti-drooping cylinder 301 through the bellows expansion pipe 307, the second boosting pipe 306, the joint 305 and the rubber suction cup 3011, causing the air pressure between the top of the partition 302 and the bottom of the upper piston 304 to increase, pushing the upper piston 304 upward. During the upward push of the upper piston 304, the lower piston 308 is driven upward by the sliding rod 303, causing the interior of the anti-drooping cylinder 301 and the lower piston 308 to move upward. 08 The space at the bottom generates negative pressure, which is transmitted to the rubber suction cup 3011 through the hollow sliding column 309 and the adsorption platform 3010, causing the rubber suction cup 3011 to be adsorbed on the upper part of the outer wall of the pipe. It should be noted that during the upward movement of the hoisting device at the hoisting end, the anti-drooping cylinder 301 is also driven to move upward through the lifting frame 101. During this period, due to the gravity of the adsorption platform 3010, the adsorption platform 3010 will not move upward during the upward movement of the anti-drooping cylinder 301. That is to say, the anti-drooping cylinder 301 moves upward along the two hollow slide columns 309 until the plunger 203 is completely compressed downward, and the anti-drooping cylinder 301 just moves to the top limit position of the hollow slide column 309. Then, as the anti-drooping cylinder 301 continues to move upward, the adsorption platform 3010 and the plurality of rubber suction cups 3011 are driven to move upward together through the two hollow slide columns 309, and the middle part of the pipeline is adsorbed and extracted, ensuring that the pipeline will not be broken due to sagging in the middle part during the lifting process;

[0052] S5. During the upward movement of the winding device at the hoisting end of the crane, the compressed tensioning spring 405 gradually rebounds, pushing the positioning light rod 402, the connecting seat 403 and the positioning pressure plate 404 to move downward, until the equipment moves up to the bottom of the arc-shaped bottom plate 406 and separates from the ground. The positioning pressure plate 404 is pressed against the top of the outer wall of the pipe under the action of the rebound force of the tensioning spring 405, thereby forming an upper and lower clamping effect with the grasping round head 204, further ensuring the stability of the pipe lifting.

[0053] In this scheme, a lifting device for water conservancy and hydropower engineering is connected with the connecting ear plate 6 and the hoisting end of the hoisting machine when it is working. After the hoisting end of the hoisting machine is connected with the connecting ear plate 6, the device is driven to move to the working position and released downward. During the downward release of the device, the bottoms of the four arc-shaped bottom plates 406 first contact the ground. Then, as the device continues to be released downward, the arc-shaped bottom plates 406 are supported by the ground and will not continue to move. As the device continues to move downward, the positioning light rod 402 slides upward relative to the inner wall of the sliding seat 401, further causing the connecting seat 403 and the positioning pressure plate 404 to move upward relative to the sliding seat 401, causing the tensioning spring 405 to compress and accumulate force.

[0054] When the two booster blocks 201 of the device move to the two ends of the water conservancy pipeline, the device is stopped from further releasing, and the two electric telescopic rods 106 are started. The output rods of the two electric telescopic rods 106 move toward each other, driving the two left and right L-shaped connecting angle plates 105 to move toward the middle. The movement of the L-shaped connecting angle plates 105 toward the middle further drives the gripping component 2 to move toward the middle, so that the gripping component 2 extends into the interior of the water conservancy pipeline. When the device moves downward until the two booster blocks 201 are located at the two ends of the water conservancy pipeline, the bottom of the rubber suction cup 3011 just contacts the top of the outer wall of the pipeline.

[0055] The hoist winch is fully rolled up, and the equipment is hoisted upward, so that the two booster blocks 201 on the left and right move upward until the top of the gripping round head 204 contacts the top wall of the pipe. As the booster block 201 continues to move upward, the gripping round head 204 is pressed down by the gravity of the pipe, pushing the plunger 203 to move downward along the inner wall of the air groove 202, causing the return spring 205 to be compressed. The plunger 203 moves downward, compressing the air in the air groove 202 and the cavity of the booster block 201. The air enters the first boosting pipe 207 through the boosting hole 206, and then enters the anti-drooping cylinder 301 through the bellows expansion pipe 307, the second boosting pipe 306, the joint 305 and the rubber suction cup 3011, causing the air pressure between the top of the partition 302 and the bottom of the upper piston 304 to increase, pushing the upper piston 304 upward. During the upward push of the upper piston 304, the lower piston 308 is driven upward by the sliding rod 303, causing the anti-drooping cylinder 301 and the lower piston 308 to move upward. The space at the bottom generates negative pressure, which is transmitted to the rubber suction cup 3011 through the hollow sliding column 309 and the adsorption platform 3010, causing the rubber suction cup 3011 to be adsorbed on the upper part of the outer wall of the pipe. It should be noted that when the hoisting device at the hoisting end moves upward, the anti-drooping cylinder 301 is also driven to move upward through the lifting frame 101. During this period, due to the gravity of the adsorption platform 3010, the adsorption platform 3010 will not move upward during the upward movement of the anti-drooping cylinder 301. That is to say, the anti-drooping cylinder 301 moves upward along the two hollow slide columns 309 until the plunger 203 is completely compressed downward, and the anti-drooping cylinder 301 just moves to the top limit position of the hollow slide column 309. Then, as the anti-drooping cylinder 301 continues to move upward, the two hollow slide columns 309 drive the adsorption platform 3010 and the multiple rubber suction cups 3011 to move upward together, and the middle part of the pipeline is adsorbed and extracted, ensuring that the pipeline will not be broken due to sagging in the middle part during the lifting process;

[0056] During the upward movement of the winding device at the winch end of the crane, the compressed tensioning spring 405 gradually rebounds, pushing the positioning light rod 402, the connecting seat 403 and the positioning pressure plate 404 to move downward, until the equipment moves up to the bottom of the arc-shaped bottom plate 406 and separates from the ground. The positioning pressure plate 404 is then pressed against the top of the outer wall of the pipe under the action of the rebound force of the tensioning spring 405, thereby forming an upper and lower clamping effect with the grasping round head 204, further ensuring the stability of the pipe lifting.

[0057] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A lifting device for water conservancy and hydropower engineering, characterized in that: Including lifting components; The lifting component comprises a lifting frame, the front and back sides of the lifting frame are fixedly installed with guide rails, the left and right sides of the lifting frame are provided with two guide blocks distributed front and back, the side faces of the front and rear guide blocks that are far away are fixedly installed with two sliding pins distributed left and right, the sliding pins are slidably installed inside the track groove of the guide rail, the side faces of the front and rear guide blocks that are close to each other are fixedly installed with L-shaped connecting angle plates, and the bottom of the lifting frame is fixedly installed with two electric telescopic rods distributed left and right, and the output rod ends of the electric telescopic rods are fixedly connected to the upper parts of the side walls of the front and rear two L-shaped connecting angle plates through connecting angle irons; A gripping component, wherein two gripping components are arranged at the bottom of the lifting component and are distributed on the left and right sides. The gripping components are fixedly installed between the front and rear two L-shaped connecting angle plates, and the gripping components are used for lifting the two ends of the water conservancy pipeline; An anti-drooping component is provided between the left and right gripping components, and the anti-drooping component is used to limit the position in the middle of the water conservancy pipeline; A positioning component, wherein two positioning components distributed on the left and right are provided at the bottom of the lifting component, and the positioning component is used for limiting the position of the water conservancy pipeline, and the positioning component comprises a sliding seat fixedly mounted on the surface of the guide rail, and the sliding seat is located on a side surface away from the front and rear guide rails, and the number of the sliding seats is four, and a positioning light rod is slidably mounted inside the sliding seat, wherein a connecting seat is fixedly mounted on the outer walls of the two positioning light rods in the front and rear directions, and a positioning pressure plate is fixedly mounted at the bottom of the connecting seat, and the positioning pressure plate is located at the top of the booster block, and the periphery of the positioning light rod is sleeved with a tensioning spring, and the tensioning spring is fixedly mounted between the bottom of the sliding seat and the top of the connecting seat, and the bottom of the positioning light rod is fixedly mounted with an arc-shaped bottom plate.

2. A lifting device for water conservancy and hydropower engineering according to claim 1, characterized in that: The gripping component includes a boosting block fixedly installed between two front and rear L-shaped connecting angle plates, the interior of the boosting block is a cavity structure, and a plurality of air grooves are opened on the top of the boosting block, the air grooves are connected to the cavity inside the boosting block, the inner walls of the plurality of air grooves are slidably installed with plungers, the outer wall of the plunger is provided with a sealing ring, the inner wall of the air groove and the outer wall of the plunger are sealed by a sealing ring, the bottom height of the plunger is greater than the bottom height of the air groove, a gripping round head is fixedly installed on the top of the plunger, a boosting hole is penetrated through the side of the boosting block away from the lifting frame, and a first boosting pipe is fixedly installed on the periphery of the opening of the boosting hole.

3. A lifting device for water conservancy and hydropower engineering according to claim 2, characterized in that: A return spring is fixedly installed between the bottom of the plunger and the bottom wall of the boosting block.

4. A lifting device for water conservancy and hydropower engineering according to claim 3, characterized in that: The anti-drooping component includes an anti-drooping cylinder fixedly installed inside the lifting frame, the anti-drooping cylinder passes through the top and bottom of the lifting frame, and a partition is fixedly installed on the inner wall of the anti-drooping cylinder, a sliding rod is slidably installed inside the partition, and the sliding rod movably passes through the top and bottom of the partition, an upper piston is fixedly installed on the top of the sliding rod, and a lower piston is fixedly installed on the bottom of the sliding rod, the outer walls of the upper piston and the lower piston are both in contact with the inner wall of the anti-drooping cylinder, and the left and right parts of the outer wall of the anti-drooping cylinder are penetrated by air inlet holes, and joints are fixedly installed on the periphery of the opening of the air inlet hole, the air inlet hole is located at the top of the partition, and the air inlet hole is located at the bottom of the upper piston, a second boosting pipe is fixedly installed on the end of the joint, and a corrugated telescopic pipe is fixedly installed between the second boosting pipe and the first boosting pipe.

5. A lifting device for water conservancy and hydropower engineering according to claim 4, characterized in that: Two hollow sliding columns are slidably installed at the bottom of the anti-drooping cylinder, and the hollow sliding columns movably penetrate the bottom of the anti-drooping cylinder and extend into the interior thereof. The two hollow sliding columns are symmetrically distributed about the center of the anti-drooping cylinder, and an adsorption platform is fixedly installed at the bottom of the two hollow sliding columns. A plurality of rubber suction cups equidistantly distributed on the left and right are fixedly installed at the bottom of the adsorption platform, and the interior of the rubber suction cup is communicated with the interior of the adsorption platform, and the interior of the adsorption platform is communicated with the interiors of the two hollow sliding columns. Two limit blocks are fixedly installed on the inner wall of the anti-drooping cylinder, and the two limit blocks are symmetrically distributed about the center of the anti-drooping cylinder, and the tops of the two limit blocks abut against the bottom of the lower piston.

6. A lifting device for water conservancy and hydropower engineering according to claim 5, characterized in that: A first constant pressure hole is opened through the left part of the outer wall of the anti-drooping cylinder, the first constant pressure hole is located at the bottom of the partition, and the first constant pressure hole is located at the top of the lower piston. A second constant pressure hole is opened through the top of the anti-drooping cylinder, and a dust cover is fixedly installed on the top of the anti-drooping cylinder, and the dust cover is located outside the opening of the second constant pressure hole.

7. A lifting device for water conservancy and hydropower engineering according to claim 6, characterized in that: The left and right ends of the front and rear guide rails are commonly fixed with end plates, there are two end plates, and the side surfaces of the two end plates that are close to each other are fixed with suspension rings, the peripheries of the two suspension rings are fixed with catenaries, and the ends of the two catenaries that are close to each other are commonly fixed with connecting ear plates.

8. The construction method of a lifting device for water conservancy and hydropower engineering according to claim 7, characterized in that: The usage steps include the following: S1. Connect the connecting ear plate to the hoisting end of the crane; S2. After the hoisting end of the crane is connected to the connecting ear plate, the equipment is driven to move to the working position and released downward. During the downward release of the equipment, the bottoms of the four arc-shaped bottom plates first contact the ground. Then, as the equipment continues to be released downward, the arc-shaped bottom plates are supported by the ground and will not continue to move. As the equipment continues to move downward, the positioning light rod slides upward relative to the inner wall of the sliding seat, further causing the connecting seat and the positioning pressure plate to move upward relative to the sliding seat, causing the tensioning spring to compress and accumulate force. S3. When the two booster blocks of the equipment move to the two ends of the water conservancy pipeline, the further release of the equipment is stopped, and the two electric telescopic rods are started. The output rods of the two electric telescopic rods move toward each other, driving the two L-shaped connecting angle plates on the left and right to move toward the middle. The movement of the L-shaped connecting angle plates toward the middle further drives the gripping component to move toward the middle, so that the gripping component extends into the interior of the water conservancy pipeline. When the equipment moves downward until the two booster blocks are located at the two ends of the water conservancy pipeline, the bottom of the rubber suction cup just contacts the top of the outer wall of the pipeline; S4. The hoist winch is fully rolled up to winch the equipment upward, so that the two boosting blocks on the left and right move upward until the top of the gripping round head contacts the top wall of the pipe. As the boosting block continues to move upward, the gripping round head is pressed downward by the gravity of the pipe, pushing the plunger to move downward along the inner wall of the air groove, causing the compression of the return spring. The downward movement of the plunger compresses the air inside the air groove and the cavity of the boosting block. The compressed air enters the interior of the first boosting pipe through the boosting hole, and then is input into the interior of the anti-drooping cylinder through the bellows expansion pipe, the second boosting pipe, the joint and the rubber suction cup, resulting in an increase in the air pressure between the top of the partition and the bottom of the upper piston, pushing the upper piston upward. During the period when the upper piston is lifted upward, the lower piston is driven upward by the sliding rod, resulting in a negative pressure effect in the space inside the anti-drooping cylinder and at the bottom of the lower piston. The negative pressure effect is transmitted to the rubber suction cup through the hollow sliding column and the adsorption platform, resulting in the rubber suction cup being adsorbed on the upper outer wall of the pipe; S5. When the hoisting device at the winch end of the crane moves upward, the compressed tensioning spring gradually rebounds, pushing the positioning rod, the connecting seat and the positioning pressure plate downward until the equipment moves up to the bottom of the arc-shaped bottom plate and separates from the ground. Then, the positioning pressure plate contacts the top of the outer wall of the pipe under the action of the rebound force of the tensioning spring, thereby forming an upper and lower clamp on the pipe with the gripping round head.

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