A device for installing and dismounting an electric hoist of a hydropower station and a method of use

Abstract

The application provides a water power station electric hoist mounting and dismounting device and a use method, which comprises a hoisting crossbeam, symmetrically fixed pressure plates are arranged in the middle part of the hoisting crossbeam, the pressure plates are matched with the lower flange surface of the track and the hoisting crossbeam is fixed at the bottom end of the track; top lifting rings are fixed at the two ends of the hoisting crossbeam, hand-operated hoists are hung on the top lifting rings, the traction chains of the hand-operated hoists are hung on the bottom lifting rings of the bottom support crossbeam end heads, and the top of the bottom support crossbeam is fixed with a support frame structure for supporting the electric hoist to be mounted. The device does not need to adopt the punching and anchoring and welding mode to set the hoisting point, and will not cause damage to the track and the concrete foundation; in the process of mounting, dismounting and transporting the electric hoist, the assistance of other hoisting equipment is not needed, the safety and the work efficiency of the operation are effectively improved; the device is easy to manufacture, light in weight and convenient to install and use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric hoist installation and maintenance, in particular to a water power station electric hoist installation and dismounting device and a use method thereof. BACKGROUND

[0002] As a kind of hoisting and lifting equipment, electric hoist has the characteristics of small size, simple operation and convenient use, and is widely used in plant, warehouse and equipment room of water conservancy and hydropower engineering. The running track of electric hoist in hydropower station is usually directly installed on the top concrete foundation of plant, warehouse and equipment room, and the distance from the running track to the ground is more than 5m. Due to the limitation of site, when installing and replacing electric hoist, the lifting equipment such as crane and forklift cannot enter the installation site to assist installation and dismounting. At the same time, in order to ensure the lifting height, the gap between the installed electric hoist and the top concrete is small, so it is difficult to set the lifting point during installation and dismounting.

[0003] At present, the main installation and dismounting methods are as follows: drilling holes in the concrete on the top of the electric hoist running track, planting reinforcing bars to add anchor points, or directly welding channel steel on the flange plate of the track as lifting point; then using steel wire rope to firmly bundle the electric hoist, using hand-operated hoist to hoist the electric hoist to the bottom of the track for installation. In order to increase the lifting height of the hand-operated hoist, wooden blocks or brackets are added under the electric hoist. This method has the following disadvantages in installing and dismounting electric hoist:

[0004] (1) Drilling holes in the concrete to add anchor points needs to be tested under load, which increases the operation time and reduces the work efficiency; (2) Direct welding on the running track will produce stress, reduce the carrying capacity of the track, and have certain safety hazards;

[0005] (3) Adding wooden blocks and other materials under the electric hoist may slide down during lifting or falling, threatening the safety of the operators below;

[0006] (4) After the electric hoist is dismounted to the ground, it still needs to be transported with the help of manpower or other equipment. SUMMARY

[0007] The purpose of the present application is to provide a water power station electric hoist installation and dismounting device and a use method thereof. This device does not need to use punching and planting reinforcing bars and welding to set the lifting point, which will not damage the track and concrete foundation. In the process of installing, dismounting and transporting electric hoist, no other lifting equipment is needed, which effectively improves the safety and work efficiency of the operation. The device is easy to manufacture, light in weight, and convenient to install and use.

[0008] In order to realize the above technical features, the purpose of the present application is realized as follows: A hoist installation and dismounting device for a hydropower station, comprising a hoisting beam, a pressing plate symmetrically fixed at the middle part of the hoisting beam, the pressing plate being matched with the lower flange surface of the track and fixing the hoisting beam at the bottom end of the track; top lifting rings are fixed at both ends of the hoisting beam, a hand-operated hoist is hooked on the top lifting ring, the bottom end of the traction chain of the hand-operated hoist is hooked on the bottom lifting ring of the bottom support beam end, and a support frame structure for supporting the to-be-installed hoist is fixed at the top of the bottom support beam.

[0009] The pressing plate is fixed at the top end of the hoisting beam by means of a bolt assembly.

[0010] A threaded hole for matching with the bolt assembly is processed on the hoisting beam.

[0011] The pressing plate comprises a planar mounting seat for matching with the top end surface of the hoisting beam, a bolt through hole is processed on the pressing plate, and a pressing inclined surface for matching with the lower flange surface of the track is arranged on the other side of the planar mounting seat.

[0012] Wheels are supported and installed at both ends of the bottom of the bottom support beam.

[0013] The support frame structure comprises a bottom frame fixed at the top end of the bottom support beam, a top frame supported and installed at the top end of the bottom frame by means of a plurality of vertical columns, and a plurality of top support crossbars fixed between the top frames.

[0014] During installation, the to-be-installed hoist is fixed at the top of the top support crossbar by means of a binding belt.

[0015] During installation, a maintenance platform is erected below the track for fixing the hoisting beam on the track.

[0016] A use method of a hoist installation and dismounting device for a hydropower station:

[0017] When a new installation operation of the hoist is performed, the following steps are included:

[0018] Step one, transfer the hoist:

[0019] Fix the to-be-installed hoist at the top end of the support frame structure, and push the entire support frame structure to transfer the hoist to the directly below the track by means of the bottom support beam;

[0020] Step two, erect the maintenance platform:

[0021] Erect the maintenance platform below the track, the maintenance platform is a ring structure, the middle part is a hoist and support frame structure lifting passage, and the working layer of the maintenance platform is arranged to facilitate the installation of the hoisting beam and the adjustment of the hoist.

[0022] Step three, install the lifting beam:

[0023] Two groups of lifting beams are fixed on the bottom of the track through the pressing plate, and four hand-operated hoists are installed on the top of the four lifting beams, and the hooks of the hand-operated hoists are connected with the bottom of the bottom support beam end.

[0024] Step four, lift the electric hoist:

[0025] The hand-operated hoist is operated to lift the entire bottom support beam, support frame structure and electric hoist so that they are located directly below the track.

[0026] Step five, install the electric hoist:

[0027] After the electric hoist is lifted into place, the binding and fixing of the electric hoist are released, the wheel gap of the electric hoist is adjusted, and the electric hoist is installed on the track.

[0028] Step six, remove the device:

[0029] After the electric hoist is installed, the hand-operated hoist is operated to lower the support frame structure to the ground, the hand-operated hoist and the lifting beam are removed, the maintenance platform is removed, and the new installation of the electric hoist is completed.

[0030] When the electric hoist is to be modified or replaced, the original installed electric hoist needs to be removed, which includes the following steps:

[0031] Step one, set up the maintenance platform:

[0032] A maintenance platform is set up below the track, which is a ring structure, and the middle part is an electric hoist and support frame structure lifting channel. The working layer of the maintenance platform should be set to facilitate the installation of the lifting beam and the adjustment of the electric hoist.

[0033] Step two, install the lifting beam:

[0034] Two groups of lifting beams are fixed on the bottom of the track through the pressing plate, and four hand-operated hoists are installed on the top of the four lifting beams, and the hooks of the hand-operated hoists are connected with the bottom of the bottom support beam end.

[0035] Step three, lift the support frame structure:

[0036] The hand-operated hoist is operated to lift the entire bottom support beam and support frame structure so that they are located directly below the track.

[0037] Step four, remove and fix the electric hoist:

[0038] Adjust the position of the support frame structure to be directly below the electric hoist to be removed, then remove the electric hoist and make it fall on the top of the support frame structure, and then bundle and fix the electric hoist on the top of the support frame structure;

[0039] Step five, lower the electric hoist:

[0040] Operate the hand chain hoist to lower the support frame structure to the ground;

[0041] Step six, remove the lifting beam and the maintenance platform:

[0042] First, use the maintenance platform to remove the lifting beam from the track, and then gradually remove the maintenance platform;

[0043] Step seven, electric hoist transfer:

[0044] Push the bottom support beam to move, and then move the entire support frame structure and the electric hoist on the top through the bottom support beam.

[0045] The present application has the following beneficial effects:

[0046] 1. The device can avoid the damage and safety hazards caused by the traditional method of setting the lifting point to the concrete foundation and the track.

[0047] 2. The device is easy to manufacture, light in weight and simple to operate.

[0048] 3. The device can effectively improve the work efficiency and safety.

[0049] 4. The device can be reused and has wide application prospects. BRIEF DESCRIPTION OF DRAWINGS

[0050] The present application will be further described below in conjunction with the drawings and examples.

[0051] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0052] Figure 2 It is a structure diagram of the present application during installation.

[0053] Figure 3 It is a structure diagram of the lifting beam of the present application.

[0054] Figure 4 It is an installation structure diagram between the lifting beam and the track of the present application.

[0055] Figure 5 It is a structure diagram of the pressing plate of the present application.

[0056] Figure 6 It is a structure diagram of the support frame of the present application.

[0057] Figure 7 The electric hoist is transported and fixed when the electric hoist is installed.

[0058] Figure 8 The maintenance platform is erected when the electric hoist is installed.

[0059] Figure 9 The installation hoisting beam is installed when the electric hoist is installed.

[0060] Figure 10 The electric hoist is installed when the electric hoist is installed.

[0061] In the figure: hoisting beam 1, top lifting ring 2, hand-operated hoist 3, pressing plate 4, limiting plate 5, bolt assembly 6, support frame structure 7, bottom lifting ring 8, bottom support beam 9, caster 10, track 11, electric hoist 12, binding belt 13, maintenance platform 14;

[0062] Threaded hole 101;

[0063] Flat mounting seat 401, bolt through hole 402, pressing inclined surface 403;

[0064] Bottom frame 701, stand 702, top frame 703, top support crossbar 704. DETAILED DESCRIPTION

[0065] The embodiments of the present application will be further described below with reference to the accompanying drawings.

[0066] Example 1:

[0067] Please refer to Figures 1-10 A water power station electric hoist installation and dismounting device, it includes hoisting beam 1, the middle part of hoisting beam 1 is fixed with pressing plate 4 symmetrically, pressing plate 4 cooperates with the lower flange surface of track 11 and fixes hoisting beam at the bottom end of track 11;The both ends of hoisting beam 1 are fixed with top lifting ring 2, top lifting ring 2 hooks hand-operated hoist 3, the traction chain bottom end of hand-operated hoist 3 hooks bottom lifting ring 8 on the end head of bottom support beam 9, the top of bottom support beam 9 is fixed with support frame structure 7 for supporting electric hoist 12 to be installed.This device does not need to adopt the way of punching and anchoring and welding to set up lifting point, will not cause damage to track and concrete foundation;In the process of installing, dismounting and transporting electric hoist, it does not need the assistance of other hoisting equipment, effectively improves the safety and work efficiency of operation;The device is easy to manufacture, the weight is lighter, and the installation and use are convenient.

[0068] Further, the pressing plate 4 is fixed on the top end of the hoisting beam 1 through the bolt assembly 6. Through the above structure, the hoisting beam 1 can be fixed under the track 11 in a detachable manner, and the track 11 is used as an auxiliary beam for hoisting, without the need to additionally set a hoisting point.

[0069] Further, the side wall of the hoisting beam 1 is provided with a limiting plate 5 for limiting the pressing plate 4. The limiting plate 5 ensures the reliability of the fixing of the pressing plate 4.

[0070] Further, the hoisting beam 1 is processed with a threaded hole 101 for cooperating with the bolt assembly 6. Through the threaded hole 101, the reliable fixing and installation of the pressing plate 4 can be achieved.

[0071] Further, the pressing plate 4 comprises a flat mounting seat 401 for abutting with the top end surface of the hoisting beam 1, the pressing plate 4 is processed with a bolt through hole 402, and the other side of the flat mounting seat 401 is provided with a pressing inclined surface 403 for cooperating with the lower flange surface of the track 11. Through the pressing plate 4, the hoisting beam 1 can be reliably fixed on the lower flange of the track 11, and the reliable fixing of the hoisting beam 1 and the track 11 can be achieved.

[0072] Further, the bottom support beam 9 is provided with a castor 10 at the bottom of both ends. Through the castor 10, the whole device can be moved, and the electric hoist 12 can be transferred.

[0073] Further, the support frame structure 7 comprises a bottom frame 701 fixed on the top end of the bottom support beam 9, a top frame 703 supported and installed on the top end of the bottom frame 701 through a plurality of vertical columns 702, and a plurality of top support cross bars 704 fixed between the top frames 703. The support frame structure 7 serves as a support platform for the electric hoist 12.

[0074] Further, during installation, the electric hoist 12 to be installed is fixed on the top of the top support cross bar 704 through the binding belt 13. Through the binding belt 13, the electric hoist 12 can be reliably fixed and installed, and the problem of falling off can be prevented.

[0075] Further, during installation, the maintenance platform 14 is erected under the track 11 for fixing the hoisting beam 1 on the track 11. Through the maintenance platform 14, the auxiliary fixing and installation of the hoisting beam 1 can be achieved.

[0076] Embodiment 2:

[0077] A use method of a water power station electric hoist installation and disassembly device:

[0078] When the new installation work of the electric hoist 12 is carried out, the following steps are included:

[0079] Step one, transfer the electric hoist 12:

[0080] The electric hoist 12 to be installed is fixed at the top end of the support frame structure 7, and the entire support frame structure 7 is pushed to transfer the electric hoist 12 to the directly below the track 11 by means of the bottom support crossbeam 9;

[0081] Step two, erect the maintenance platform 14:

[0082] The maintenance platform 14 is erected below the track 11, and the maintenance platform 14 is a ring structure, the middle part is the lifting passage of the electric hoist 12 and the support frame structure 7, and the working layer of the maintenance platform 14 is arranged to facilitate the installation of the lifting crossbeam 1 and the adjustment of the electric hoist by the workers;

[0083] Step three, install the lifting crossbeam 1:

[0084] Two groups of lifting crossbeams 1 are fixed at the bottom of the track 11 through the pressing plates 4, four hand hoists 3 are installed on the four top lifting rings 2 of the lifting crossbeams 1 respectively, and the lifting hooks of the hand hoists 3 are connected with the bottom lifting rings 8 at the end of the bottom support crossbeam 9;

[0085] Step four, lift the electric hoist 12:

[0086] The hand hoists 3 are operated to lift the entire bottom support crossbeam 9, the support frame structure 7 and the electric hoist 12 to the directly below the track 11;

[0087] Step five, install the electric hoist 12:

[0088] After the electric hoist 12 is lifted into position, the binding and fixing of the electric hoist 12 are released, the wheel clearance of the electric hoist 12 is adjusted, and the electric hoist 12 is installed on the track 11;

[0089] Step six, remove the device:

[0090] After the installation of the electric hoist 12 is completed, the hand hoists 3 are operated to lower the support frame structure 7 to the ground, the hand hoists 3 and the lifting crossbeams 1 are removed, the maintenance platform 14 is removed, and the new installation work of the electric hoist 12 is completed.

[0091] Example 3:

[0092] When the electric hoist is transformed or replaced, the original installed electric hoist needs to be disassembled, which specifically includes the following steps:

[0093] Step one, erect the maintenance platform 14:

[0094] A maintenance platform 14 is set up below the track 11. The maintenance platform 14 is annular in structure, and has a lifting passage for the electric hoist 12 and the support frame structure 7 in the middle part. The working layer of the maintenance platform 14 is arranged to facilitate the installation of the hoisting beam 1 and the adjustment of the electric hoist by the workers;

[0095] Step two, installation of the hoisting beam 1:

[0096] Two groups of hoisting beams 1 are fixed to the bottom of the track 11 through the pressing plates 4, and four hand hoists 3 are installed on the top lifting rings 2 of the hoisting beams 1, respectively. The hooks of the hand hoists 3 are connected with the bottom lifting rings 8 at the end of the bottom support beam 9.

[0097] Step three, lifting of the support frame structure 7:

[0098] The hand hoists 3 are operated to lift the entire bottom support beam 9 and the support frame structure 7 so that they are located directly below the track 11.

[0099] Step four, dismounting and fixing of the electric hoist:

[0100] The position of the support frame structure 7 is adjusted so that it is located directly below the electric hoist to be dismounted. Then the electric hoist is dismounted and falls on the top of the support frame structure 7. The electric hoist is then bound and fixed on the top of the support frame structure 7.

[0101] Step five, lowering of the electric hoist:

[0102] The hand hoists 3 are operated to lower the support frame structure 7 to the ground.

[0103] Step six, dismounting of the hoisting beam 1 and the maintenance platform 14:

[0104] First, the hoisting beam 1 is dismounted from the track using the maintenance platform 14, and then the maintenance platform 14 is dismounted step by step.

[0105] Step seven, electric hoist transfer:

[0106] The bottom support beam 9 is pushed to move, and the entire support frame structure 7 and the electric hoist on the top are moved and transferred through the bottom support beam 9.

Claims

1. A method for using an electric hoist installation and dismantling device for a hydropower station, the electric hoist installation and dismantling device for a hydropower station includes a hoisting beam (1), a clamping plate (4) is symmetrically fixed in the middle part of the hoisting beam (1), the clamping plate (4) cooperates with the lower flange surface of the track (11) and fixes the hoisting beam to the bottom end of the track (11); top lifting rings (2) are fixed at both ends of the hoisting beam (1), a hand chain hoist (3) is hooked on the top lifting rings (2), the bottom end of the traction chain of the hand chain hoist (3) is hooked on the bottom lifting ring (8) at the end of the bottom support beam (9), and a support frame structure (7) for supporting the electric hoist (12) to be installed is fixed at the top of the bottom support beam (9); The clamping plate (4) includes a flat mounting seat (401) for fitting against the top surface of the hoisting beam (1), and the clamping plate (4) is machined with bolt through holes (402). On the other side of the flat mounting seat (401) is a clamping inclined surface (403) for engaging with the lower flange surface of the track (11). The bottom support beam (9) is supported by casters (10) at both ends of its bottom. The support frame structure (7) includes a bottom frame (701) fixed to the top of the bottom support beam (9), and a top frame (703) is installed on the top of the bottom frame (701) by multiple columns (702). Multiple top support crossbars (704) are fixed between the top frames (703). The method of use is as follows: When performing new installation work on the electric hoist (12), the following steps are included: Step 1: Transfer the electric hoist (12): The electric hoist (12) to be installed is fixed to the top of the support frame structure (7), and the entire support frame structure (7) is pushed to transfer the electric hoist (12) to the bottom of the track (11) by means of the bottom support beam (9). Step 2, setting up the maintenance platform (14): An inspection platform (14) is erected under the track (11). The inspection platform (14) is a ring structure, with the middle part being the lifting channel for the electric hoist (12) and the support frame structure (7). The setting of the working layer of the inspection platform (14) should facilitate the installation of the hoisting beam (1) and the adjustment of the electric hoist by the staff. Step 3, Install the hoisting beam (1): Two sets of lifting beams (1) are fixed to the bottom of the track (11) by clamping plates (4), four hand chain hoists (3) are installed on the four top lifting rings (2) of the lifting beams (1), and the hooks of the hand chain hoists (3) are connected to the bottom lifting rings (8) at the end of the bottom support beam (9). Step 4, lift the electric hoist (12): Operate the hand chain hoist (3) to lift the entire bottom support beam (9), support frame structure (7) and electric hoist (12) so that they are located directly below the track (11); Step 5, Install the electric hoist (12): After the electric hoist (12) is lifted into place, release the binding and fixing of the electric hoist (12), adjust the wheel gap of the electric hoist (12), and install the electric hoist (12) on the track (11). Step 6, dismantle the device: After the electric hoist (12) is installed, the manual hoist (3) is used to lower the support frame structure (7) to the ground, the manual hoist (3) and the hoisting beam (1) are removed, the maintenance platform (14) is removed, and the new installation of the electric hoist (12) is completed.

2. The method of using the electric hoist installation and dismantling device for a hydropower station according to claim 1, characterized in that: The clamping plate (4) is fixed to the top of the hoisting beam (1) by bolt assembly (6).

3. The method of using the electric hoist installation and dismantling device for a hydropower station according to claim 1, characterized in that: The hoisting beam (1) is machined with threaded holes (101) for mating with bolt assembly (6).

4. The method of using the electric hoist installation and dismantling device for a hydropower station according to claim 1, characterized in that: During installation, the electric hoist (12) to be installed is fixed to the top of the top support crossbar (704) by the binding strap (13).

5. The method of using the electric hoist installation and dismantling device for a hydropower station according to claim 1, characterized in that: During installation, an inspection platform (14) is erected below the track (11) to fix the hoisting beam (1) onto the track (11).

6. The method of using the electric hoist installation and dismantling device for a hydropower station according to claim 1, characterized in that: When modifying or replacing an electric hoist, the existing electric hoist needs to be disassembled, which includes the following steps: Step 1, set up the maintenance platform (14): An inspection platform (14) is erected under the track (11). The inspection platform (14) is a ring structure, with the middle part being the lifting channel for the electric hoist (12) and the support frame structure (7). The setting of the working layer of the inspection platform (14) should facilitate the installation of the hoisting beam (1) and the adjustment of the electric hoist by the staff. Step 2, Install the hoisting beam (1): Two sets of lifting beams (1) are fixed to the bottom of the track (11) by clamping plates (4), four hand chain hoists (3) are installed on the four top lifting rings (2) of the lifting beams (1), and the hooks of the hand chain hoists (3) are connected to the bottom lifting rings (8) at the end of the bottom support beam (9). Step 3, lift the support frame structure (7): Operate the chain hoist (3) to lift the entire bottom support beam (9) and support frame structure (7) so that they are located directly below the track (11); Step 4: Remove and secure the electric hoist: Adjust the position of the support frame structure (7) so that it is directly below the electric hoist to be removed, then remove the electric hoist so that it falls on the top of the support frame structure (7), and then tie and fix the electric hoist to the top of the support frame structure (7). Step 5: Lower the electric hoist: Operate the hand chain hoist (3) to lower the support frame structure (7) to the ground; Step 6: Remove the hoisting beam (1) and the maintenance platform (14): First, use the maintenance platform (14) to remove the hoisting beam (1) from the track, and then gradually dismantle the maintenance platform (14). Step 7: Transfer using electric hoist: Push the bottom support beam (9) to move it, and then drive the entire support frame structure (7) and the electric hoist at the top to move and transfer through the bottom support beam (9).

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