CN112123112A

CN112123112A - Grinding device for hydroelectric blade

Info

Publication number: CN112123112A
Application number: CN202011048416.2A
Authority: CN
Inventors: 陈红专
Original assignee: Hunan Liwei Hydropower Equipment Manufacturing Co ltd
Current assignee: Hunan Liwei Hydropower Equipment Manufacturing Co ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2020-12-25

Abstract

The invention discloses a polishing device for a hydroelectric blade, which comprises a base, a placing seat, a fixed rod, a mounting plate, a motor, a rotating seat, a connecting rod, a floating clamping block, a clamping groove, an elastic piece, a polishing wheel and a clamping assembly. The invention has the following beneficial effects: the blade is clamped through the clamping assembly, the grinding wheel is driven by the motor to rotate, then the blade of the hydraulic generator is ground through the grinding wheel, a manual mode is replaced for grinding, the labor intensity of workers is reduced, the working efficiency is improved, meanwhile, the elastic piece is arranged to support the floating fixture block, the floating fixture block has certain longitudinal buffering, the grinding wheel is enabled to be in contact with the blade of the hydraulic generator to have certain buffering space, the grinding wheel is prevented from being worn quickly, the service life is prolonged, welding slags with different thicknesses can be ground, and the grinding quality is improved.

Description

Grinding device for hydroelectric blade

Technical Field

The invention relates to the field of polishing equipment, in particular to a polishing device for a hydroelectric generation blade.

Background

A hydroelectric power station, called a hydroelectric power plant in general, is a plant that converts potential energy and kinetic energy of water into electric energy. The basic production process is as follows: water is drawn from the high position of a river or other reservoirs, the water turbine is driven to rotate by the pressure or the flow velocity of the water, the gravitational potential energy and the kinetic energy are converted into mechanical energy, and then the water turbine drives the generator to rotate, so that the mechanical energy is converted into electric energy. The power station is generally composed of four major parts, namely a water retaining building (dam), a flood discharge building (spillway or gate), a water diversion building (diversion canal or tunnel including surge shaft) and a power station factory building (tail canal and booster station). The main components are as follows: hydraulic structures, hydraulic mechanical equipment, power generation equipment, power transformation equipment, power distribution equipment, power transmission equipment and control and auxiliary equipment.

Hydroelectric power station mainly relies on hydroelectric generator to generate electricity, hydroelectric generator is in manufacturing process, need polish the blade of hydroelectric generator after the welding, some enterprises still polish the blade through the mode of artifical polishing at present, namely, the workman uses the hand-held type polisher to polish the blade, this kind of mode has resulted in workman's intensity of labour great, and because when polishing, the welding slag splashes easily, and then lead to the welding slag to fly into in the workman's eye, cause the incident, consequently need one kind can replace artifical polishing, low-cost type equipment of polishing.

In order to solve the problems, a grinding device for the hydroelectric blades is provided.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a polishing device for a hydroelectric blade, and in order to solve the technical problem, the invention provides the following technical scheme:

the invention provides a polishing device for hydroelectric blades, which comprises a base, wherein a placing seat for placing hydroelectric blades is arranged on the base, a fixed rod is vertically arranged at one end of the base in the length direction, an installation plate is horizontally arranged at the upper end of the fixed rod, a motor is vertically arranged on the installation plate, a rotating seat is connected to the motor in a driving manner, a connecting rod which is coaxially matched with the rotating seat in a sliding manner and penetrates out of the bottom of the rotating seat is arranged on the rotating seat, the connecting rod is connected to the rotating seat through a spline, a floating clamping block is arranged at one end penetrating into the rotating seat, correspondingly, a clamping groove which is clamped by the floating clamping block and can vertically and freely slide is arranged on the rotating seat, an elastic part is arranged in the clamping groove and is used for abutting against the floating clamping block and driving the floating clamping block to downwards move, and, the grinding wheel is located right above the placing seat, and the base is further provided with a clamping assembly for clamping the blades of the hydraulic generator.

Preferably, the elastic part is a compression spring, and two ends of the compression spring in the elastic direction respectively abut against the floating fixture block and the inner top wall of the clamping groove.

Preferably, the centre gripping subassembly includes two sliding seats of sliding connection on the base, it is connected with the pivot to place the seat and go up the horizontal rotation, pivot length direction both ends are equipped with screw respectively and revolve to opposite first lead screw portion, second lead screw portion, two lead screw nut is respectively installed to the sliding seat, two lead screw nut threaded sleeve is respectively on first lead screw portion and second lead screw portion, two the sliding seat top respectively is connected with the grip block, two respectively be equipped with on the opposite side outer wall of grip block and be used for carrying out the centre gripping groove of block with hydroelectric generator blade tip, when the pivot rotates, drive two lead screw nut closes with first lead screw portion and second lead screw portion screw soon respectively, and then makes two sliding seat relative movement drives two centre gripping groove on the grip block presss from both sides tight hydroelectric generator blade.

Preferably, the rotating shaft is driven to rotate by a servo motor installed on the base.

Preferably, the mounting plate is hinged to the fixed rod and is driven by the rotary driving assembly to turn along the hinged position of the fixed rod, so that the grinding wheel is far away from or close to the blades of the hydroelectric generator.

Preferably, the rotation driving assembly comprises a lower mounting seat arranged on the base, the lower mounting seat is hinged to an upper mounting seat, a driving element is arranged on the upper mounting seat, a hinged support is connected to the driving element in a driving mode, and the hinged support is hinged to one end, far away from the motor, of the mounting plate.

Preferably, the drive element is a hydraulic cylinder.

Compared with the prior art, the invention has the following beneficial effects: the blade is clamped by the clamping assembly, the grinding wheel is driven by the motor to rotate, and then the grinding wheel polishes the blade of the hydraulic generator, so that the manual mode is replaced for polishing, the labor intensity of workers is reduced, the working efficiency is improved, meanwhile, the elastic part is arranged to abut against the floating fixture block, so that the floating fixture block has certain longitudinal buffering, the grinding wheel is in contact with the blade of the hydraulic generator to have certain buffering space, the grinding wheel is prevented from being worn quickly and the service life is not influenced, in addition, welding slag with different thicknesses can be ground, the grinding quality is improved, the clamping assembly is composed of a rotating shaft, screw nuts, sliding seats and clamping blocks, the two screw nuts are respectively screwed with the first screw rod part and the second screw rod part on the rotating shaft through the rotation of the rotating shaft, and then the two sliding seats are driven to move relatively, make two grip blocks be close to relatively, and then the tip of the centre gripping groove joint blade on the two grip blocks of drive, and carry on spacingly to the blade, thereby press from both sides tightly the blade of hydroelectric generator, in-process polishing is being carried out like this, the blade can be in stable state, the simple structure of centre gripping subassembly in addition, the action synchronization degree of two sliding seats is higher, and then can guarantee that the blade can be by two grip blocks synchronous centre gripping, make the blade can not produce the removal, improve the centre gripping effect, it installs on the dead lever to set up the mounting panel is articulated, and rotate through the articulated department of rotation drive assembly drive its edge with the dead lever, make the wheel of polishing keep away from or be close to the blade, thereby the workman of being convenient for presss from both sides the.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the general assembly structure of a grinding device for hydroelectric blades according to the present invention;

FIG. 2 is an enlarged partial schematic view at A of FIG. 1;

in the figure: 1-servomotor, 2-screw nut, 3-clamping block, 4-clamping groove, 5-motor, 6-grinding wheel, 7-fixing rod, 8-hinged seat, 9-hydraulic cylinder, 10-upper mounting seat, 11-lower mounting seat, 12-second screw rod part, 13-placing seat, 14-base, 15-sliding seat, 16-first screw rod part, 17-connecting rod, 18-clamping groove, 19-compression spring, 20-rotary seat and 21-floating clamping block.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Examples

As shown in fig. 1-2, a polishing device for hydroelectric blades comprises a base 14, wherein a placing seat 13 for placing hydroelectric blades is arranged on the base 14, a fixed rod 7 is vertically arranged at one end of the base 14 in the length direction, a mounting plate is horizontally arranged at the upper end of the fixed rod 7, a motor 5 is vertically arranged on the mounting plate, a rotating seat 20 is connected to the motor 5 in a driving manner, a connecting rod 17 coaxially sliding out of the bottom of the rotating seat 20 is arranged on the rotating seat 20, the connecting rod 17 is connected to the rotating seat 20 through a spline, a floating clamping block 21 is arranged at one end penetrating into the rotating seat 20, correspondingly, a clamping groove 18 for clamping the floating clamping block 21 and vertically and freely sliding is arranged on the rotating seat 20, an elastic member is arranged in the clamping groove 18 and used for abutting against the floating clamping block 21 and driving the floating clamping block 21 to move downwards, the lower end of the connecting rod 17 is coaxially provided with a grinding wheel 6, the grinding wheel 6 is positioned right above the placing seat 13, and the base 14 is further provided with a clamping assembly for clamping the blades of the hydraulic generator.

In this embodiment, preferably, the elastic member is a compression spring 19, two ends of the compression spring 19 respectively abut against the floating block 21 and the inner top wall of the slot 18, and the floating block 21 moves downward in a natural state by compressing the tianhuang 19 to elastically abut against the floating block 21.

In this embodiment, the clamping assembly preferably comprises two sliding seats 15 slidably connected to the base 14, the placing seat 13 is horizontally and rotatably connected with a rotating shaft, two ends of the rotating shaft in the length direction are respectively provided with a first screw rod part 16 and a second screw rod part 12 with opposite screw thread turning directions, two sliding seats 15 are respectively provided with a screw rod nut 2, the two screw rod nuts 2 are respectively sleeved on the first screw rod part 16 and the second screw rod part 12 in a screw thread manner, the tops of the two sliding seats 15 are respectively connected with a clamping block 3, the outer walls of the opposite sides of the two clamping blocks 3 are respectively provided with a clamping groove 4 for clamping with the end part of a hydraulic generator blade, when the rotating shaft rotates, the two lead screw nuts 4 are driven to be respectively screwed with the first lead screw part 16 and the second lead screw part 12, and then the two sliding seats 15 move relatively to drive the clamping grooves 4 on the two clamping blocks 3 to clamp the blades of the hydraulic generator.

In this embodiment, as preferably, the rotating shaft is driven by the servo motor 1 installed on the base 14 to rotate, the servo motor 1 is powered by an external power supply, and the servo motor 1 is powered on to rotate, so that the servo motor 1 drives the rotating shaft to rotate, and the rotating shaft does not need to be rotated manually, thereby further reducing the labor intensity of workers and further improving the working efficiency.

In this embodiment, the mounting plate is preferably hinged to the fixed rod 7 and is driven by a rotary drive assembly to turn along the hinge with the fixed rod 7, so that the grinding wheel 6 is far away from or close to the blades of the hydroelectric generator.

In this embodiment, as is preferable, the rotation driving assembly includes a lower mounting seat 11 disposed on a base 14, an upper mounting seat 10 is hinged to the lower mounting seat 11, a driving element is mounted on the upper mounting seat 10, a hinged support 8 is drivingly connected to the driving element, and the hinged support 8 is hinged to one end of the mounting plate far away from the motor 5.

In this embodiment, the driving element is preferably a hydraulic cylinder 9, but the driving element may be other linear driving elements, such as an electric push rod or a pneumatic cylinder.

The working principle of the invention when in use is as follows: a worker places blades of a hydroelectric generator on a placing seat 13, then an external power supply is switched on, the servo motor 1 is started, the servo motor 1 rotates to drive a rotating shaft to rotate, the rotating directions of the threads of a first screw rod part 16 and a second screw rod part 12 on the rotating shaft are opposite, at the moment, two screw rod nuts 4 move relatively, and then two sliding seats 15 are relatively close, so that two clamping blocks 3 are relatively close, clamping grooves 4 on the two clamping blocks 3 respectively abut against two opposite ends of the hydroelectric generator blades, the hydroelectric generator blades are clamped on the placing seat 13, then a hydraulic cylinder 9 is started, a telescopic rod of the hydraulic cylinder 9 extends, a mounting plate is driven to rotate downwards along a hinged part with a fixed rod 7, namely, the motor 5 rotates downwards, a polishing wheel 6 abuts against the surfaces of the blades, and meanwhile, the floating clamping block 21 is elastically abutted against by a compression spring, so that the grinding wheel 6 can abut against the surface of the blade, then the motor 5 is started, and the motor 5 drives the grinding wheel 6 to rotate, thereby grinding the welding slag on the surface of the blade.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The grinding device for the hydroelectric blades is characterized by comprising a base (14), wherein a placing seat (13) for placing the hydroelectric blades is arranged on the base (14), a fixing rod (7) is vertically arranged at one end of the base (14) in the length direction, a mounting plate is horizontally arranged at the upper end of the fixing rod (7), a motor (5) is vertically arranged on the mounting plate, a rotating seat (20) is connected to the motor (5) in a driving manner, a connecting rod (17) which is coaxially matched with the rotating seat (20) in a sliding manner and penetrates out of the bottom of the rotating seat is arranged on the rotating seat (20), the connecting rod (17) is connected to the rotating seat (20) through a spline, a floating clamping block (21) is arranged at one end of the rotating seat (20) which penetrates into the rotating seat (20), and correspondingly, a clamping groove (18) which is used for clamping the floating clamping block (21), the hydraulic generator blade clamping device is characterized in that an elastic part is arranged in the clamping groove (18), the elastic part is used for abutting against the floating clamping block (21) and driving the floating clamping block (21) to move downwards, a polishing wheel (6) is coaxially arranged at the lower end of the connecting rod (17), the polishing wheel (6) is located right above the placing seat (13), and a clamping assembly used for clamping a hydraulic generator blade is further arranged on the base (14).

2. The grinding device for the hydroelectric blades as claimed in claim 1, wherein the elastic member is a compression spring (19), and two ends of the compression spring (19) in the elastic direction respectively abut against the floating fixture block (21) and the inner top wall of the clamping groove (18).

3. The grinding device for the hydroelectric blades as claimed in claim 1, wherein the clamping assembly comprises two sliding seats (15) slidably connected to a base (14), the placing seat (13) is horizontally and rotatably connected with a rotating shaft, a first screw rod part (16) and a second screw rod part (12) with opposite thread turning directions are respectively arranged at two ends of the rotating shaft in the length direction, screw nuts (2) are respectively arranged on the two sliding seats (15), the two screw nuts (2) are respectively and threadedly sleeved on the first screw rod part (16) and the second screw rod part (12), the tops of the two sliding seats (15) are respectively connected with clamping blocks (3), clamping grooves (4) for clamping with the blade end parts of the hydroelectric generator are respectively arranged on the outer walls of the opposite sides of the two clamping blocks (3), and when the rotating shaft rotates, the two screw nuts (4) are driven to respectively and threadedly and rotatably connect with the first screw rod part (16) and the second screw rod part (12) And then the two sliding seats (15) move relatively to drive the clamping grooves (4) on the two clamping blocks (3) to clamp the blades of the hydroelectric generator.

4. A sharpening device for hydroelectric blades as claimed in claim 3, wherein said shaft is driven in rotation by a servomotor (1) mounted on the base (14).

5. A sharpening device for blades of hydroelectric power generation as claimed in claim 1, wherein said mounting plate is hinged to the fixed rod (7) and is driven to turn along the hinge with the fixed rod (7) by a rotary driving assembly, so as to make said sharpening wheel (6) far away from or close to the blades of hydroelectric power generation.

6. A grinding device for hydroelectric power generation blades as claimed in claim 5, wherein the rotary driving assembly comprises a lower mounting seat (11) arranged on a base (14), an upper mounting seat (10) is hinged on the lower mounting seat (11), a driving element is arranged on the upper mounting seat (10), a hinged support (8) is connected on the driving element in a driving manner, and the hinged support (8) is hinged with one end of the mounting plate far away from the motor (5).

7. A sharpening device for hydroelectric blades as claimed in claim 6, wherein the driving element is a hydraulic cylinder (9).