CN215617362U

CN215617362U - Integrated mirror plate grinding equipment

Info

Publication number: CN215617362U
Application number: CN202121477108.1U
Authority: CN
Inventors: 廖邦敏; 冷志; 梁北平; 罗大兵; 吴辉
Original assignee: Dongfang Electric Machinery Co Ltd DEC
Current assignee: Dongfang Electric Machinery Co Ltd DEC
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-01-25
Anticipated expiration: 2031-06-30

Abstract

The utility model belongs to the technical field of manufacturing of hydraulic generators, and particularly relates to integrated mirror plate grinding equipment. The technical scheme is as follows: integral type mirror plate grinding device, including annular frame, the frame below is provided with a plurality of buttresses that are used for carrying out the support to the frame, installs actuating mechanism on the frame, and the driving gear is installed to actuating mechanism's output shaft, and the internal tooth carousel bearing is installed to the inboard of frame, and internal tooth carousel bearing's outer lane is fixed with the frame, and internal tooth carousel bearing's inner circle and driving gear mesh are connected with the abrasive disc on the inner circle of internal tooth carousel bearing. The utility model provides a grinding device capable of grinding a main shaft integrated mirror plate on site.

Description

Integrated mirror plate grinding equipment

Technical Field

The utility model belongs to the technical field of manufacturing of hydraulic generators, and particularly relates to integrated mirror plate grinding equipment.

Background

The runner plate of the hydraulic generator is an important part of the hydraulic generator, and the runner plate, a thrust head, a thrust tile and other parts form a thrust bearing to bear the whole weight of the rotating part of the hydraulic generator set and the axial force of water flow. In order to ensure the reliability and the service life of the unit operation, the operation between the thrust bearing plate and the thrust bearing bush is ensured under the condition of oil lubrication, and the minimum oil film thickness of an oil outlet edge is required to be in accordance with a design value. This requires higher precision and lower roughness of the mirror plate. The precision and roughness requirements of a typical mirror plate are: the flatness is 0.02, and the roughness is 0.2-0.4.

Most of the hydro-generator units have split-type mirror plates, namely the thrust heads and the mirror plates are processed respectively and then are combined together through bolts. The shape of the mirror plate is an annular workpiece, the mirror surface processing mode is more, the grinding/polishing can be carried out on a vertical lathe in factory processing, and special grinding equipment is also arranged on a construction site.

Patent application No. CN200610022461.4 discloses a grinding device and method for a runner plate of a hydraulic generator, which comprises a hollow base, a grinding device and a grinding device, wherein the hollow base is provided with a horizontal top plate, and the center of the top plate is provided with a hole; the hollow bottomless upper support is provided with a thrust bearing on a top plate; the upper support is arranged on the base; the horizontal rotating arm is provided with a vertical middle shaft, and the working end of the rotating arm is provided with a grinding mechanism; the rotary arm is supported on the thrust bearing, the upper end of a shaft is fixedly connected with the rotary arm, and the lower end of the shaft extends into the space in the upper support; an output shaft of the vertical speed reduction driving device penetrates through a central hole of a top plate of the base and extends into the space in the upper support; and the pair of couplings are respectively and fixedly connected with the lower end of the central shaft of the spiral arm and the shaft end of the output shaft of the speed reduction driving device to connect the two shafts. The grinding method comprises the following steps: firstly, placing a water wheel generator mirror plate and a grinding device on a platform, leveling and fixing; operating the grinding device to grind the mirror plate; and thirdly, polishing the mirror plate to enable the processing surface of the mirror plate to reach a mirror surface.

Although the grinding equipment can grind the mirror plate on site, the mirror plate needs to be separately lifted to a mounting seat of the grinding equipment before grinding, and the grinding equipment does not have a space for accommodating the spindle and cannot grind the mirror plate integrated with the spindle.

Disclosure of Invention

In order to solve the above problems of the prior art, an object of the present invention is to provide a grinding apparatus capable of grinding a spindle-integrated mirror plate in situ.

The technical scheme adopted by the utility model is as follows:

integral type mirror plate grinding device, including annular frame, the frame below is provided with a plurality of buttresses that are used for carrying out the support to the frame, installs actuating mechanism on the frame, and the driving gear is installed to actuating mechanism's output shaft, and the internal tooth carousel bearing is installed to the inboard of frame, and internal tooth carousel bearing's outer lane is fixed with the frame, and internal tooth carousel bearing's inner circle and driving gear mesh are connected with the abrasive disc on the inner circle of internal tooth carousel bearing.

The driving mechanism drives the driving gear to rotate, the driving gear drives the inner ring of the internal tooth turntable bearing to rotate, then the inner ring can drive the grinding disc to do circular motion, and the grinding disc grinds the mirror plate. Before grinding, the integrated mirror plate with the main shaft is firstly inverted, and the mirror plate is arranged on the lower main shaft. Because the base is annular, the interior of the base has a space through which the spindle passes. And hoisting the machine base, sleeving the machine base from the main shaft, placing the machine base on the buttress, and grinding after adjustment. The main shaft and the machine base do not generate interference, so that the integrated mirror plate of the main shaft can be ground on site.

As a preferable scheme of the utility model, the driving mechanism comprises a motor, the output end of the motor is connected with a speed reducer, a support seat is fixed on the base, the motor and the speed reducer are both arranged on the support seat, and the driving gear is connected to the output end of the speed reducer. The motor drive reduction gear work, the reduction gear drives the driving gear and rotates to the circular motion of abrasive disc is realized through the break-make of control motor, convenient operation.

As a preferable scheme of the utility model, an adjusting mechanism is arranged between the buttress and the machine base. The adjustment mechanism can be used to adjust the level of the device so that the bottom of the grinding disk remains level, ensuring accurate grinding of the mirror plate.

As a preferable scheme of the utility model, the adjusting mechanism comprises a lower wedge-shaped cushion block, the lower wedge-shaped cushion block is arranged on the buttress, and an upper wedge-shaped cushion block is arranged on the lower wedge-shaped cushion block. After the upper wedge block and the lower wedge block are matched, the machine base can be reliably supported all the time. And the height of the adjusting mechanism at the position can be adjusted by adjusting the relative positions of the upper wedge block and the lower wedge block, so that the levelness of the whole machine base is adjusted, and the operation is convenient.

As a preferred scheme of the utility model, the lower wedge block is provided with a limiting groove, the bottom of the upper wedge block is provided with a limiting tooth, and the limiting tooth is clamped with the limiting groove. The spacing groove can carry on spacingly to spacing tooth, avoids the condition that the frame removed for the buttress among the grinding process, guarantees the stability of frame.

In a preferred embodiment of the utility model, the grinding disk is connected to the inner ring of the internally toothed slewing bearing via a universal joint. After the universal joint is connected to the grinding disc, the grinding disc can be accurately attached to the surface of the mirror plate under the action of gravity, and the grinding flatness is guaranteed.

The utility model has the beneficial effects that:

the base of the utility model is annular, and the interior of the base is provided with a space which penetrates through the main shaft. And hoisting the machine base, sleeving the machine base from the main shaft, placing the machine base on the buttress, and grinding after adjustment. The main shaft and the machine base do not generate interference, so that the integrated mirror plate of the main shaft can be ground on site.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a partial structural view of the present invention.

In the figure, 1-stand; 2-buttress; 3-a drive mechanism; 4-a drive gear; 5-internal tooth slewing bearing; 6-grinding disc; 7-an adjusting mechanism; 8-mirror plate; 9-a main shaft; 31-a motor; 32-a reducer; 33-a support base; 61-universal joint; 71-lower wedge blocks; 72-upper wedge pad; 711-a limiting groove; 721-limit teeth.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

As shown in fig. 1 and 2, the integrated mirror plate grinding device of the present embodiment includes an annular base 1, a plurality of buttresses 2 for supporting the base 1 are disposed below the base 1, a driving mechanism 3 is installed on the base 1, a driving gear 4 is installed on an output shaft of the driving mechanism 3, an internal tooth turntable bearing 5 is installed on the inner side of the base 1, an outer ring of the internal tooth turntable bearing 5 is fixed to the base 1, an inner ring of the internal tooth turntable bearing 5 is engaged with the driving gear 4, and an inner ring of the internal tooth turntable bearing 5 is connected with a grinding disc 6.

The driving mechanism 3 drives the driving gear 4 to rotate, the driving gear 4 drives the inner ring of the internal tooth turntable bearing 5 to rotate, the inner ring can drive the grinding disc 6 to do circular motion, and the grinding disc 6 grinds the mirror plate 8. Before grinding, the integrated mirror plate 8 with the spindle 9 is inverted, so that the mirror plate 8 is on the lower spindle 9. Since the housing 1 is annular, a space is provided inside thereof through the main shaft 9. The machine base 1 is lifted and sleeved from the main shaft 9, then is placed on the buttress 2, and grinding work can be carried out after adjustment. The spindle 9 and the base 1 do not interfere with each other, so that the present invention can perform on-site grinding on the integrated mirror plate 8 of the spindle 9.

Wherein, actuating mechanism 3 includes motor 31, and the output of motor 31 is connected with reduction gear 32, is fixed with supporting seat 33 on the frame 1, and motor 31 and reduction gear 32 are all installed on supporting seat 33, and driving gear 4 is connected on the output of reduction gear 32. Motor 31 drive reduction gear 32 work, and reduction gear 32 drives driving gear 4 and rotates to realize the circular motion of abrasive disc 6, convenient operation through the break-make of control motor 31.

Furthermore, an adjusting mechanism 7 is arranged between the buttress 2 and the machine base 1. The adjustment mechanism 7 can be used to adjust the level of the device so that the bottom of the grinding disk 6 remains level, ensuring accurate grinding of the mirror plate 8. The adjusting mechanism 7 comprises a lower wedge-shaped cushion block 71, the lower wedge-shaped cushion block 71 is arranged on the buttress 2, and an upper wedge-shaped cushion block 72 is arranged on the lower wedge-shaped cushion block 71. After the upper wedge block and the lower wedge block are matched, the machine base 1 can be reliably supported all the time. And, through the relative position of adjustment upper wedge and lower wedge, the height of adjustable this department guiding mechanism 7 to the levelness of whole frame 1 obtains adjusting, convenient operation. The lower wedge block is provided with a limiting groove 711, the bottom of the upper wedge block is provided with a limiting tooth 721, and the limiting tooth 721 is clamped with the limiting groove 711. The limiting groove 711 can limit the limiting tooth 721, so that the situation that the machine base 1 moves relative to the buttress 2 in the grinding process is avoided, and the stability of the machine base 1 is ensured.

Furthermore, the grinding disk 6 is connected to the inner ring of the internally toothed slewing bearing 5 via a universal joint 61. After the universal joint 61 is connected to the grinding disk 6, the grinding disk 6 can be accurately attached to the surface of the mirror plate 8 under the action of gravity, and the grinding flatness is guaranteed.

The working principle is as follows:

the normal working state of the main shaft 9 of the integrated mirror plate 8 of the hydraulic generator 31 is that the mirror plate 8 is downward, and in order to facilitate grinding (repairing) processing, the main shaft 9 needs to be placed in an inverted state, and the mirror plate 8 is firmly fixed after the mirror surface level is adjusted (meeting the process requirements).

A rest pier 2 is placed around the main shaft 9, the rest pier 2 being used to support the grinding apparatus. The grinding disk 6 is hoisted and placed on the mirror plate 8.

The grinding equipment is hoisted by a crane, sleeved from the upper end part of the main shaft 9, placed on the buttress 2 and fixed. The level of the grinding device is adjusted by an adjusting mechanism 7, so that the inner circle of the turntable bearing rotates to be approximately parallel to the plane of the mirror plate 8. The grinding disk 6 is fixed to the inner ring of the internally toothed slewing bearing 5 by a universal joint 61.

And starting the motor 31, wherein the motor 31 drives the speed reducer 32 to rotate, so as to drive the driving gear 4 to rotate, and the driving gear 4 is meshed with the inner ring gear of the internal tooth turntable bearing 5, so as to drive the inner ring of the internal tooth turntable bearing 5 to rotate. The inner ring of the internal tooth turntable bearing 5 rotates, and the grinding disc 6 is driven to rotate around the shaft through the universal joint 61, so that the grinding operation is realized. After the grinding is completed, the grinding disk 6 may be replaced with a polishing disk to polish the mirror plate 8.

The utility model is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.

Claims

1. Integral type mirror plate grinding device, a serial communication port, including annular frame (1), frame (1) below is provided with a plurality of buttress (2) that are used for supporting frame (1), install actuating mechanism (3) on frame (1), driving gear (4) are installed to the output shaft of actuating mechanism (3), internal tooth carousel bearing (5) are installed to the inboard of frame (1), the outer lane of internal tooth carousel bearing (5) is fixed with frame (1), the inner circle and the driving gear (4) meshing of internal tooth carousel bearing (5), be connected with abrasive disc (6) on the inner circle of internal tooth carousel bearing (5).

2. The integrated mirror plate grinding apparatus according to claim 1, wherein the driving mechanism (3) comprises a motor (31), an output end of the motor (31) is connected with a speed reducer (32), a support base (33) is fixed on the base (1), the motor (31) and the speed reducer (32) are both mounted on the support base (33), and the driving gear (4) is connected to an output end of the speed reducer (32).

3. The integrated mirror plate grinding apparatus according to claim 1, wherein an adjustment mechanism (7) is provided between the buttress (2) and the housing (1).

4. The integrated mirror plate grinding apparatus according to claim 3, wherein the adjusting mechanism (7) comprises a lower wedge block (71), the lower wedge block (71) being disposed on the buttress (2), the lower wedge block (71) being disposed with an upper wedge block (72).

5. The integrated mirror plate grinding apparatus of claim 4, wherein the lower wedge is provided with a limiting groove (711), the bottom of the upper wedge is provided with a limiting tooth (721), and the limiting tooth (721) is engaged with the limiting groove (711).

6. The integrated mirror plate grinding apparatus according to any one of claims 1 to 5, wherein the grinding disk (6) is connected with an inner ring of an internally toothed turntable bearing (5) by a universal joint (61).