Hydraulic cylinder hoisting and turning coordination system for vertical hydraulic hoist of hydropower station and its turning method

Abstract

The present invention provides a hydroelectric vertical hydraulic hoist cylinder lifting and turning coordination system and a turning method thereof. The system includes a gantry crane, a lifting tool, a trailer platform and a fixture. The lifting tool is arranged on the hook of the gantry crane and is used to fix the upper end of the hydraulic hoist cylinder. The trailer platform is provided with a main support trailer and a follow-up support trailer. The main support trailer includes a main support trailer body, a main traction device and main support trailer wheels. The follow-up support trailer includes a follow-up support trailer body, a follow-up traction device and follow-up support trailer wheels. The trailer platform is provided with tracks that cooperate with the main support trailer wheels and the follow-up support trailer wheels. The main support trailer body is provided with a fixture for fixing the hydraulic hoist cylinder, and the fixture is rotatably installed on the main support trailer body. The system and method are used for the turning operation of the hydraulic hoist cylinder, improving the safety and working efficiency of the operation.

Description

Technical Field

[0001] The present invention relates to the field of hydroelectric power station equipment installation, and particularly to a vertical hydraulic hoist cylinder lifting and turning-over collaborative system for a hydroelectric power station and a turning-over method thereof. Background Art

[0002] The transportation of the cylinder is mostly horizontal. During installation and disassembly, vertical and horizontal adjustments are required, that is, the turning-over of the hydraulic hoist cylinder. At present, the turning-over of the cylinder mainly relies on a gantry hoist and a mobile crane or the way of lifting by two cranes. It requires highly coordinated cooperation between the command personnel and the lifting operation personnel to complete smoothly, with low efficiency and certain danger. There is a need for an automatic collaborative system to improve the safety and work efficiency of construction operations.

[0003] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a vertical hydraulic hoist cylinder lifting and turning-over collaborative system for a hydroelectric power station to improve the safety and work efficiency of the cylinder turning-over operation. This system realizes the automatic collaboration problem of the cylinder turning-over, eliminates the hidden danger of asynchronous manual cooperation of the operators during the turning-over process, improves the safety of the cylinder turning-over operation, and at the same time improves the work efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a vertical hydraulic hoist cylinder lifting and turning-over collaborative system for a hydroelectric power station and a turning-over method thereof, which are used for the turning-over operation of the hydraulic hoist cylinder to improve the safety and work efficiency of the operation.

[0005] To solve the above technical problem, the technical solution adopted by the present invention is: a vertical hydraulic hoist cylinder lifting and turning-over collaborative system for a hydroelectric power station, including a gantry crane, a sling, a trailer platform and a fixture. The sling is arranged on the hook of the gantry crane, and the sling is used to fix the upper end of the hydraulic hoist cylinder. The trailer platform is provided with a main support trailer and a follow-up support trailer. The main support trailer includes a main support trailer body, a main traction device and main support trailer wheels. The follow-up support trailer includes a follow-up support trailer body, a follow-up traction device and follow-up support trailer wheels. The trailer platform is provided with rails that cooperate with the main support trailer wheels and the follow-up support trailer wheels. The main support trailer body is provided with a fixture for fixing the hydraulic hoist cylinder, and the fixture is rotatably installed on the main support trailer body.

[0006] In a preferred solution, the trailer platform includes a trailer platform body and a trailer telescopic track support. One end of the trailer telescopic track support is arranged on the trailer platform body, and the other end is provided with track support wheels at the lower side. The track support wheels are driven by a track support wheel traction device.

[0007] In a preferred solution, the lower side of the end of the trailer telescopic track support is provided with a telescopic leg.

[0008] In a preferred embodiment, platform wheels are provided on the lower side of the trailer platform body. The platform wheels and the wheels of the gantry crane cooperate with the gantry crane track, and the platform wheels are driven by a trailer platform traction device.

[0009] In a preferred embodiment, a counterweight is provided on the upper side of one end of the trailer telescopic track bracket close to the trailer platform body.

[0010] In a preferred embodiment, the track includes an upper track and a lower track, and the driving support trailer wheels and the follower support trailer wheels are arranged between the upper track and the lower track.

[0011] In a preferred embodiment, the spreader includes two clamping plates. The two clamping plates are clamped on the upper end of the hydraulic opening and closing oil cylinder. A connecting shaft is provided on the outer side of the clamping plate. The connecting shaft is connected to the balance beam through a connecting rope, and the balance beam is installed on the hook of the gantry crane.

[0012] In a preferred embodiment, the fixture includes two fixed clamping plates. The fixed clamping plates are clamped on the lower end of the hydraulic opening and closing oil cylinder. A rotating shaft is provided on the outer side of the fixed clamping plate, and a clamping groove cooperating with the rotating shaft is provided on the driving support trailer body.

[0013] The present invention also provides a method for hoisting and turning over a hydraulic opening and closing oil cylinder of a hydroelectric vertical type, including the following steps:

[0014] Step 1: Position the gantry crane at the top of the hydraulic opening and closing oil cylinder, connect the spreader to the hydraulic opening and closing oil cylinder, and start the gantry crane to lift the hydraulic opening and closing oil cylinder out of the orifice.

[0015] Step 2: Start the trailer platform, move it to near the gantry crane, start the track support wheel traction device, extend the trailer telescopic track bracket out of the trailer platform body, and start the telescopic support legs to extend and reliably ground.

[0016] Step 3: Start the driving traction device to make the driving support trailer body located directly below the hydraulic opening and closing oil cylinder, and rotatably connect the lower part of the hydraulic opening and closing oil cylinder to the driving support trailer body through the fixture.

[0017] Step 4: Control the driving traction device to make the moving speed of the driving support trailer body V 1 , and at the same time, the hook of the gantry crane descends at a speed of V 2 ;

[0018] Step 5: When the hydraulic opening and closing oil cylinder is close to horizontal, control the follower traction device to move to directly below the spreader. After the hydraulic opening and closing oil cylinder is reliably connected to the follower support trailer body, retract the hook of the gantry crane.

[0019] Step 6: Carry out the transportation of the hydraulic opening and closing oil cylinder, retract the telescopic support legs, and retract the trailer telescopic track bracket.

[0020] In an optimal solution, in step four, V 2 ={L - [L 2 -(V 1 t) 2 1 / 2} / t, where L is the length between two rotation points at both ends of the hydraulic hoist cylinder, t is the time, V 1 is the moving speed of the active support trailer, and V 2 is the downward speed of the gantry crane hook.

[0021] A hydroelectric vertical hydraulic hoist cylinder hoisting and turning-over collaborative system and its turning-over method provided by the present invention improve the safety and working efficiency of the cylinder turning-over operation. This system realizes the automatic collaboration problem of cylinder turning-over, eliminates the hidden danger of out-of-step manual cooperation of operators during the turning-over process, improves the safety of the cylinder turning-over operation, and at the same time improves the working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the drawings and embodiments:

[0023] Figure 1 is the front view of the present invention;

[0024] Figure 2 is the top view of the present invention;

[0025] Figure 3 is Figure 1 the view along the A-A plane;

[0026] Figure 4 is Figure 3 the enlarged view at B in

[0027] Figure 5 the structural schematic diagram of the fixed splint;

[0028] Figure 6 is the intermediate state diagram of the hydraulic hoist cylinder hoisting and turning-over;

[0029] Figure 7 is the horizontal state diagram of the hydraulic hoist cylinder hoisting and turning-over;

[0030] ​In the figure: portal crane 1, spreader 2, trailer platform 3, clamp 4, hydraulic hoist cylinder 5, active support trailer 6, follower support trailer 7, portal crane track 101, clamping plate 201, connecting shaft 202, connecting rope 203, balance beam 204, trailer platform car body 301, trailer telescopic track support 302, track 303, track support wheel 304, track support wheel traction device 305, telescopic leg 306, platform wheel 307, trailer platform traction device 308, counterweight 309, fixed clamping plate 401, rotating shaft 402, active support trailer car body 601, active traction device 602, active support trailer wheel 603, follower support trailer car body 701, follower traction device 702, follower support trailer wheel 703, card slot 6011, upper track 3031, lower track 3032. Detailed implementation manner

[0031] As Figures 1 to 5 shown, a hydroelectric vertical hydraulic hoist cylinder hoisting and turning-over collaborative system includes a portal crane 1, a spreader 2, a trailer platform 3 and a clamp 4. The spreader 2 is arranged on the hook of the portal crane 1. The spreader 2 is used to fix the upper end of the hydraulic hoist cylinder 5. In this embodiment, the spreader 2 includes two clamping plates 201. The clamping plates 201 are arc-shaped structures. The clamping plates 201 can also be replaced by a clamp. The two clamping plates 201 are clamped on the upper end of the hydraulic hoist cylinder 5 and are connected by bolts. A connecting shaft 202 is arranged on the outer side of the clamping plate 201. The connecting shaft 202 is connected to the balance beam 204 through a connecting rope 203. The hook of the portal crane 1 is hoisted on the balance beam 204 to realize the fixation of the hydraulic hoist cylinder 5. At the same time, when turning over, the connecting shaft 202 can rotate along the lifting point without affecting the turning over.

[0032] An active support trailer 6 and a follower support trailer 7 are arranged on the trailer platform 3. The active support trailer 6 includes an active support trailer car body 601, an active traction device 602 and active support trailer wheels 603. The follower support trailer 7 includes a follower support trailer car body 701, a follower traction device 702 and follower support trailer wheels 703. A track 303 matching with the active support trailer wheels 603 and the follower support trailer wheels 703 is arranged on the trailer platform 3. The active support trailer wheels 603 and the follower support trailer wheels 703 are respectively driven by the active traction device 602 and the follower traction device 702, so that the active support trailer 6 and the follower support trailer 7 can move respectively. A clamp 4 for fixing the hydraulic hoist cylinder 5 is arranged on the active support trailer car body 601. The clamp 4 is rotatably installed on the active support trailer car body 601.

[0033] The fixture 4 may include a clamp and rotating shafts provided on both sides of the clamp. A clamping groove matching the rotating shafts is provided on the active support trailer body 601. During the turnover process, the rotating shafts can rotate in the clamping grooves, thereby realizing the rotational turnover of the hydraulic hoist cylinder.

[0034] In this embodiment, the fixture 4 includes two fixed clamping plates 401. The fixed clamping plates 401 can be set to have the same shape as the clamping plate 201 in FIG. 5. The fixed clamping plates 401 are clamped at the lower end of the hydraulic hoist cylinder 5 through bolts. Rotating shafts 402 are provided on the outer sides of the fixed clamping plates 401, and a clamping groove 6011 matching the rotating shafts 402 is provided on the active support trailer body 601.

[0035] During specific use, the upper and lower ends of the hydraulic hoist cylinder 5 are fixed by the lifting appliance 2 and the fixture 4 respectively, and the lifting appliance 2 can rotate along the lifting points and the fixture 4 can rotate along the connection position with the active support trailer body 601. Thus, by controlling the descending speed of the portal crane 1 and the horizontal moving speed of the active support trailer 6, the turnover of the hydraulic hoist cylinder 5 is realized.

[0036] During the implementation process, the control systems of the active traction device 602 and the portal crane 1 are linked for speed control.

[0037] Preferably, the trailer platform 3 includes a trailer platform body 301 and a trailer telescopic track support 302. One end of the trailer telescopic track support 302 is arranged on the trailer platform body 301, and track support wheels 304 are provided on the lower side of the other end. The track support wheels 304 are driven by a track support wheel traction device 305.

[0038] By providing the trailer platform body 301 and the trailer telescopic track support 302, the trailer telescopic track support 302 can extend and move under the gantry 1, so that the trailer platform 3 and the portal crane 1 can share the gantry track 101 and the active support trailer 6 and the follower support trailer 7 can be moved under the gantry 1 without additionally arranging tracks.

[0039] Platform wheels 307 are provided on the lower side of the trailer platform body 301. The platform wheels 307 and the wheels of the portal crane 1 cooperate with the gantry track 101. The platform wheels 307 are driven by a trailer platform traction device 308.

[0040] Through the cooperation of the platform wheels 307 and the gantry track 101, the transfer of the hydraulic hoist cylinder is facilitated.

[0041] Preferably, telescopic legs 306 are provided on the lower side of the end of the trailer telescopic track support 302. The telescopic legs 306 can be set as hydraulic telescopic legs, which is convenient for supporting the trailer telescopic track support 302 after it moves into place and making it reliably grounded.

[0042] On the upper side of one end of the trailer telescopic track bracket 302 close to the trailer platform vehicle body 301, a counterweight 309 is provided.

[0043] By setting the counterweight 309, it plays a balancing role for the trailer telescopic track bracket 302, preventing the trailer telescopic track bracket 302 from losing balance due to the weight difference at both ends during the process of tipping over.

[0044] Preferably, as shown in FIG. 3, the track 303 includes an upper track 3031 and a lower track 3032, and the driving support trailer wheels 603 and the follower support trailer wheels 703 are arranged between the upper track 3031 and the lower track 3032.

[0045] By setting the upper track 3031 and the lower track 3032, it guides and limits the driving support trailer wheels 603 or the follower support trailer wheels 703 up and down, preventing derailment during the process of tipping over.

[0046] A method for hoisting and tipping over the cylinder of a hydroelectric vertical hydraulic hoist, from vertical to horizontal, as Figures 6 to 7 shown, includes the following steps:

[0047] Step 1: Position the gantry crane 1 on the top of the hydraulic hoist cylinder 5, connect the lifting tool 2 to the hydraulic hoist cylinder 5, and start the gantry crane 1 to lift the hydraulic hoist cylinder 5 out of the orifice.

[0048] Step 2: Start the trailer platform 3, move it near the gantry crane 1, start the track bracket wheel traction device 305, extend the trailer telescopic track bracket 302 out of the trailer platform vehicle body 301, and start the telescopic support leg 306 to extend and reliably ground.

[0049] Step 3: Start the active traction device 602 to make the active support trailer vehicle body 601 located directly below the hydraulic hoist cylinder 5, and rotatably connect the lower part of the hydraulic hoist cylinder 5 to the active support trailer vehicle body 601 through the fixture 4.

[0050] Step 4: Control the active traction device 602 to make the moving speed of the active support trailer vehicle body 601 be V 1 , and at the same time, the hook of the gantry crane 1 descends with a speed of V 2 .

[0051] Step 5: When the hydraulic hoist cylinder 5 is close to horizontal, control the follower traction device 702 to move directly below the lifting tool 2. After the hydraulic hoist cylinder 5 is reliably connected to the follower support trailer vehicle body 701, release the lifting tool 2, and the hook of the gantry crane 1 retracts.

[0052] Step 6: Carry out the transfer of the hydraulic hoist cylinder 5, retract the telescopic support leg 306, and retract the trailer telescopic track bracket 302.

[0053] The steps of turning from horizontal to vertical are the opposite of the above steps.

[0054] In the fourth step described above, V 2 ={L - [L 2 - (V 1 t) 2} / t, where L is the length between the two rotation points at both ends of the hydraulic hoist cylinder, t is the time, V 1 / 2 is the moving speed of the active support trailer, and V 1 is the downward speed of the portal crane hook. 2

[0055] By limiting V 1 and V 2 , the portal crane and the active support trailer 6 can cooperate to complete the turning over.

[0056] Using this system to perform the turning-over operation on the hydraulic hoist cylinder does not require manual cooperation, improving the safety and work efficiency of the cylinder turning-over operation. This system realizes the automatic cooperation problem of the cylinder turning-over, eliminates the hidden danger of asynchronous manual cooperation of the operator during the turning-over process, improves the safety of the cylinder turning-over operation, and at the same time improves the work efficiency.​

Claims

1. A method for hoisting and turning over the cylinder of a vertical hydraulic hoist in hydropower projects, characterized in that, it uses a collaborative system for hoisting and turning over the cylinder of a vertical hydraulic hoist in hydropower projects. The collaborative system for hoisting and turning over the cylinder of a vertical hydraulic hoist in hydropower projects includes a gantry crane (1), a lifting tool (2), a trailer platform (3) and a fixture (4). The lifting tool (2) is arranged on the hook of the gantry crane (1), and the lifting tool (2) is used to fix the upper end of the hydraulic hoist cylinder (5). On the trailer platform (3), there are a main support trailer (6) and a follow-up support trailer (7). The trailer platform (3) includes a trailer platform body (301) and a trailer telescopic track support (302). One end of the trailer telescopic track support (302) is arranged on the trailer platform body (301), and on the lower side of the other end, there are track support wheels (304). The track support wheels (304) are driven by a track support wheel traction device (305). On the lower side of the end of the trailer telescopic track support (302), there is a telescopic leg (306); The main support trailer (6) includes a main support trailer body (601), a main traction device (602) and main support trailer wheels (603). The follow-up support trailer (7) includes a follow-up support trailer body (701), a follow-up traction device (702) and follow-up support trailer wheels (703). On the trailer platform (3), there is a track (303) that cooperates with the main support trailer wheels (603) and the follow-up support trailer wheels (703). The main support trailer body (601) is provided with a fixture (4) for fixing the hydraulic hoist cylinder (5). The fixture (4) is rotatably installed on the main support trailer body (601); It includes the following steps: Step 1: Position the gantry crane (1) above the top of the hydraulic hoist cylinder (5), connect the lifting tool (2) to the hydraulic hoist cylinder (5), and start the gantry crane (1) to lift the hydraulic hoist cylinder (5) out of the orifice; Step 2: Start the trailer platform (3), move it near the gantry crane (1), start the track support wheel traction device (305) to extend the trailer telescopic track support (302) out of the trailer platform body (301), and start the telescopic leg (306) to extend and reliably ground; Step 3: Start the main traction device (602) to make the main support trailer body (601) located directly below the hydraulic hoist cylinder (5), and rotatably connect the lower part of the hydraulic hoist cylinder (5) to the main support trailer body (601) through the fixture (4); Step 4: Control the active traction device (602) to make the moving speed of the active support trailer body (601) be V 1 , and at the same time, lower the hook of the gantry crane (1) with a speed of V 2 , V 2 = {L - [L 2 - (V 1 t) 2} 1 / 2 / t, where L is the length between the two rotation points at both ends of the hydraulic opening and closing oil cylinder, t is the time, V 1 is the moving speed of the active support trailer, and V 2 is the descending speed of the hook of the gantry crane; Step 5: When the hydraulic hoist cylinder (5) is close to the horizontal position, control the follow-up traction device (702) to move directly below the lifting tool (2). After the hydraulic hoist cylinder (5) is reliably connected to the follow-up support trailer body (701), retract the hook of the gantry crane (1); Step 6: Transport the hydraulic hoist cylinder (5), retract the telescopic leg (306), and retract the trailer telescopic track support (302).

2. According to the method for hoisting and turning over the cylinder of a vertical hydraulic hoist in hydropower projects described in claim 1, characterized in that, The lower side of the trailer platform body (301) is provided with platform wheels (307). The platform wheels (307) and the wheels of the portal crane (1) cooperate with the portal crane track (101), and the platform wheels (307) are driven by a trailer platform traction device (308).

3. A method for hoisting and turning over a hydraulic hoist cylinder of a hydropower vertical type, according to claim 1, characterized in that, A counterweight (309) is provided on the upper side of one end of the trailer telescopic track bracket (302) close to the trailer platform body (301).

4. A method for hoisting and turning over a hydraulic hoist cylinder of a hydropower vertical type, according to claim 1, characterized in that, The track (303) includes an upper track (3031) and a lower track (3032), and the driving support trailer wheels (603) and the follower support trailer wheels (703) are arranged between the upper track (3031) and the lower track (3032).

5. A method for hoisting and turning over a hydraulic hoist cylinder of a hydropower vertical type, according to claim 1, characterized in that, The lifting tool (2) includes two clamping plates (201). The two clamping plates (201) are clamped on the upper end of the hydraulic hoist cylinder (5). A connecting shaft (202) is arranged outside the clamping plate (201). The connecting shaft (202) is connected to a balance beam (204) through a connecting rope (203), and the balance beam (204) is installed on the hook of the portal crane (1).

6. A method for hoisting and turning over a hydraulic hoist cylinder of a hydropower vertical type, according to claim 1, characterized in that, The fixture (4) includes two fixed clamping plates (401). The fixed clamping plates (401) are clamped on the lower end of the hydraulic hoist cylinder (5). A rotating shaft (402) is arranged outside the fixed clamping plate (401), and a clamping groove (6011) matching the rotating shaft (402) is provided on the driving support trailer body (601).

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