阅读说明：本技术 一种轴瓦研磨修复装置 (Bearing bush grinding and repairing device ) 是由 张全付 张洋 孙春雨 赵占峰 于 2020-12-01 设计创作，主要内容包括：本发明涉及一种轴瓦研磨修复装置,包括机械底座,机械底座的上端设置有下瓦枕固定卡槽的接口,下瓦枕固定设置在半圆块的下端,所述的半圆块的两侧设置有固定耳,所述的固定耳上均固定设置有牵引绳,所述的牵引绳一端固定固定耳另一端缠绕固定卷扬被动筒；所述的卷扬被动筒为两个且对称设置在卷扬主动轮的两侧,所述的卷扬主动轮由主动齿轮驱动连接,所述的主动齿轮驱动卷扬主动轮旋转的任意状态下,所述的主动齿轮和一侧的卷扬被动筒的同轴齿轮啮合传动,所述的主动齿轮和另一侧的卷扬被动筒的同轴齿轮不啮合。(The invention relates to a bearing bush grinding and repairing device which comprises a mechanical base, wherein the upper end of the mechanical base is provided with an interface of a lower bearing bush fixing clamping groove, a lower bearing bush is fixedly arranged at the lower end of a semicircular block, fixing lugs are arranged on two sides of the semicircular block, traction ropes are fixedly arranged on the fixing lugs, one end of each traction rope is fixed on the fixing lug, and the other end of each traction rope is wound on a fixed winch driven cylinder; the winch driven drums are two and symmetrically arranged on two sides of the winch driving wheel, the winch driving wheel is in driving connection with the driving gear, the driving gear drives the winch driving wheel to rotate in any state, the driving gear is in meshed transmission with the coaxial gear of the winch driven drum on one side, and the driving gear is not meshed with the coaxial gear of the winch driven drum on the other side.)

1. The utility model provides a bearing bush grinds prosthetic devices, includes mechanical base, and mechanical base's upper end is provided with the interface of lower bearing bush pillow fixed slot, its characterized in that: the lower tile pillow (5) is fixedly arranged at the lower end of the semicircular block (1), fixing lugs (2) are arranged on two sides of the semicircular block (1), a traction rope (3) is fixedly arranged on the fixing lugs (2), one end of the traction rope (3) is fixedly provided with the fixing lugs (2), and the other end of the traction rope (3) is wound on and fixed with the winch driven cylinder (7); the winch driven drums (7) are arranged on two sides of the winch driving wheel (8) symmetrically, the winch driving wheel (8) is connected with the driving wheel (10) in a driving mode, the driving wheel (10) drives the winch driving wheel (8) to rotate in any state, the driving wheel (10) is in meshed transmission with a coaxial gear of the winch driven drum (7) on one side, and the driving wheel (10) is not meshed with a coaxial gear of the winch driven drum (7) on the other side.

2. The bearing shell grinding and repairing device as claimed in claim 1, wherein: the first driven gear (9) and the second driven gear (11) are respectively and coaxially connected with the winch driven cylinders (7) on two sides of the winch driving wheel (8), the first driven gear (9) and the second driven gear (11) are full-circle gears, and the driving gear (10) is a non-full-circle gear.

3. The bearing shell grinding and repairing device as claimed in claim 2, wherein: the first driven gear (9) and the second driven gear (11) are correspondingly arranged on two sides of the driving gear (10).

4. A bearing shell grinding and repairing apparatus as claimed in any one of claims 1 to 2, wherein: the driving gear (10) is a half-cycle gear, one half of the external surface is provided with teeth, and the other half of the external surface is not provided with teeth.

5. A bearing shell grinding and repairing apparatus as claimed in any one of claims 1 to 2, wherein: the driving gear (10) is a symmetrical non-full-tooth gear, and the radian of the gear is the same as that of the non-gear.

6. A bearing shell grinding and repairing apparatus as claimed in any one of claims 1 to 2, wherein: the traction rope (3) is wound on the winding driven drum (7) through the guide wheel (6).

7. A bearing shell grinding and repairing apparatus as claimed in any one of claims 1 to 2, wherein: the upper tile pillow (4) and the lower tile pillow (5) are buckled.

Technical Field

The invention relates to the technical field of grinding and repairing devices for bearing bushes of steam turbines, in particular to a grinding and repairing device for bearing bushes.

Background

At present, the bearing pad of the steam turbine bearing pad is a spherical surface contact bearing pad, the structure is very complex, the maintenance process requirement is high, after the steam turbine bearing pad operates for many years, because of the vibration effect in operation and the voltage ball discharge effect of a steam turbine large shaft on the bearing pad-shaped joint surface, a plurality of electric corrosion pits appear, the new contact condition of the spherical joint surface is worsened, the contact area is gradually reduced, the standard requirement of the contact area over 75 percent is not met, and finally the vibration condition of the steam turbine bearing pad is caused; the manual grinding is used, at least 3-5 days are needed, the efficiency is low, and the grinding deviation condition is easy to occur, so that an electric special tool specially used for grinding the tile pillow needs to be designed, the defects formed in the operation of the tile pillow are eliminated, the labor is saved, the time can be shortened within one day, and the working efficiency is improved; in the prior art and patent documents, a motor driving mode, a rack mode and a planet wheel structure are adopted, so that a bearing bush is reciprocated to complete grinding, but the mode has the defects of complex structure, high cost, need of a rack and a gear with a curved surface, no universality, different sizes of the bearing bush, need of matching different racks, dependence on the rotating speed of a motor on the rotation motion, and size of the gear for driving the rack, complex structure, high cost, incapability of adapting to the requirements of different sizes, difficult adjustment and change, and accordingly, the bearing bush grinding repair device is needed.

Disclosure of Invention

The invention aims to provide a bearing bush grinding and repairing device which has the characteristics of simple structure, low cost, wide application range and convenience in use.

In order to solve the problems, the invention provides a bearing bush grinding and repairing device which comprises a mechanical base, wherein the upper end of the mechanical base is provided with an interface of a lower bearing bush fixing clamping groove, a lower bearing bush is fixedly arranged at the lower end of a semicircular block, fixing lugs are arranged on two sides of the semicircular block, traction ropes are fixedly arranged on the fixing lugs, one end of each traction rope is fixedly arranged on the fixing lug, and the other end of each traction rope is wound on a fixed winch driven cylinder; the winch driven drums are two and symmetrically arranged on two sides of the winch driving wheel, the winch driving wheel is in driving connection with the driving gear, the driving gear drives the winch driving wheel to rotate in any state, the driving gear is in meshed transmission with the coaxial gear of the winch driven drum on one side, and the driving gear is not meshed with the coaxial gear of the winch driven drum on the other side.

The bearing bush grinding and repairing device provided by the invention also has the following technical characteristics:

furthermore, the first driven gear and the second driven gear are respectively and coaxially connected with the winch driven cylinders on two sides of the winch driving wheel, the first driven gear and the second driven gear are full-circle gears, and the driving gear is a non-full-circle gear.

Furthermore, the first driven gear and the second driven gear are correspondingly arranged on two sides of the driving gear.

Furthermore, the driving gear is a half-cycle gear, one half of the driving gear is provided with teeth, and the other half of the driving gear is not provided with teeth.

Furthermore, the driving gear is a symmetrical non-full-tooth gear, and the radian of the gear is the same as that of the non-gear.

Further, the traction rope is wound on the winding driven drum through the guide wheel.

Furthermore, the upper tile pillow and the lower tile pillow are buckled.

The bearing bush grinding and repairing device is composed of the semicircular block, the fixing lug, the traction rope, the upper bearing bush pillow, the lower bearing bush pillow, the guide wheel, the winch driven cylinder, the winch driving wheel, the first driven gear, the driving gear and the second driven gear, and has the advantages of being simple in structure, low in cost, wide in application range and convenient to use.

The invention has the following beneficial effects that the invention combines the specific technical means:

1. the fixing lugs are arranged on the semicircular block, then the traction rope of the fixing lugs is utilized, the winch driving wheel and the winch driven cylinder are combined to drive the semicircular block to do circular reciprocating rotary motion, the traction rope is utilized to pull the fixing lugs to drive the semicircular block to do circular reciprocating rotary motion, and the semicircular block and the upper tile pillow are directly fixed by the clamping groove, so that the size structure of the upper tile pillow can be conveniently adjusted and adapted, and the device has the advantages of simple structure, convenience in operation and good effect; the winch driven drum created by the invention forms two reverse traction actions of reciprocating in a circulating way on the traction rope, the actions realize that the intermittent wheels of the winch driven drum on the two sides of the winch driven drum rotate in the same direction through the winch driving wheel, the first driven gear and the second driven gear by intermittent alternate meshing transmission, and further form two reverse traction pulls on the traction rope to realize reciprocating motion.

2. The invention creates the driving gear to move in one direction, drives two driven gears through a wheel, and the two driven gears are coaxially connected with the winding drum, thus realizing the traction action in different directions, having simple structure, adopting the common motor and the gear box, not needing to adopt the functions of motor speed regulation and positive and negative rotation, having simple structure, low cost, being not easy to have faults, and utilizing the traction rope, also having the characteristics of impact resistance and less heat productivity; because of the frequent commutation of the motor, the existence of a larger magnetic field or current commutation is meant, the heat productivity is large, and the whole grinding process has large energy consumption.

Drawings

Fig. 1 is a front view of a bearing bush grinding and repairing apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of a driving gear meshing state of the bearing bush grinding and repairing apparatus according to the embodiment of the present invention;

FIG. 3 is a schematic view illustrating a driving gear meshing state of the bearing bush grinding and repairing apparatus according to the embodiment of the present invention;

FIG. 4 is a schematic view of the left limit state of the bearing bush grinding and repairing apparatus according to the embodiment of the present invention;

FIG. 5 is a schematic diagram of a right limit state of the bearing bush grinding and repairing apparatus according to the embodiment of the present invention;

in the figure: 1. The semi-circle block 2, the fixing lug 3, the traction rope 4, the upper tile pillow 5, the lower tile pillow 6, the guide wheel 7, the winch driven cylinder 8, the winch driving wheel 9, the first driven gear 10, the driving gear 11 and the second driven gear.

Detailed Description

The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The invention provides a bearing bush grinding and repairing device which comprises a mechanical base, wherein the upper end of the mechanical base is provided with a connector of a lower bearing bush fixing clamping groove, a lower bearing bush 5 is fixedly arranged at the lower end of a semicircular block 1, fixing lugs 2 are arranged on two sides of the semicircular block 1, traction ropes 3 are fixedly arranged on the fixing lugs 2, one end of each traction rope 3 is fixedly provided with the fixing lug 2, and the other end of each traction rope 3 is wound on a fixed winch driven cylinder 7; the winding driven drums 7 are symmetrically arranged on two sides of the winding driving wheel 8, the winding driving wheel 8 is in driving connection with the driving gear 10, the driving gear 10 drives the winding driving wheel 8 to rotate, the driving gear 10 is in meshing transmission with the coaxial gear of the winding driven drum 7 on one side, and the driving gear 10 is not in meshing transmission with the coaxial gear of the winding driven drum 7 on the other side.

When the upper tile pillow is implemented, firstly, the fixing lugs are arranged on the semicircular block, then the traction rope of the fixing lugs is utilized to combine the winch driving wheel and the winch driven cylinder to drive the semicircular block to do circular reciprocating rotary motion, the traction rope is utilized to pull the fixing lugs to drive the semicircular block to do circular reciprocating rotary motion, and the semicircular block and the upper tile pillow are directly fixed by the clamping groove, so that the size structure of the upper tile pillow can be conveniently adjusted and adapted, and the upper tile pillow has the advantages of simple structure, convenience in operation and good effect; the winch driven drum created by the invention forms two circularly reciprocating reverse traction actions on the traction rope, and the actions realize intermittent wheel co-rotation of the winch driven drums at two sides of the winch driven drum through intermittent alternate meshing transmission by virtue of the winch driving wheel, the first driven gear and the second driven gear, so that two reverse traction pulls on the traction rope, and the reciprocating circular motion is realized; secondly, the driving gear is in one-way motion, the two driven gears are driven by one wheel and are coaxially connected with the winding drum, so that traction actions in different directions are realized, the structure is simple, a common motor and a gearbox are adopted, the functions of motor speed regulation and forward and reverse rotation are not needed, the structure is simple, the cost is low, faults are not easy to occur, and the characteristics of impact resistance and less heat productivity are realized by utilizing the traction rope; because of the frequent commutation of the motor, the existence of a larger magnetic field or current commutation is meant, the heat productivity is large, and the whole grinding process has large energy consumption.

In an embodiment of this application, the driven section of thick bamboo 7 of hoist of the both sides of first driven gear 9, second driven gear 11 coaxial coupling hoist action wheel 8 respectively, first driven gear 9, second driven gear 11 be the complete cycle gear, driving gear 10 be non-complete cycle gear, simple structure, through intermittent type formula transmission, the driven section of thick bamboo of hoist of intermittent type rotation drive both sides realizes the operation to haulage rope 3, realizes the axle bush friction grinding action of recirculation, driven reciprocating motion mechanism simple structure, and adjustment accommodation is simple, and is with low costs, effectual, convenient realization.

In an embodiment of the present application, the first driven gear 9 and the second driven gear 11 are correspondingly disposed on two sides of the driving gear 10, so that the arrangement cost is low, the structure is reasonable, and the volume is compact.

In an embodiment of the application, the driving gear 10 is a half-cycle gear, one half of the outer surface is provided with teeth, and the other half of the outer surface is not provided with teeth.

In an embodiment of the application, the driving gear 10 is a symmetrical non-full-tooth gear, the radians of the gear and the non-gear are the same, and high-frequency and rapid reciprocating motion can be realized through conversion of equal radians, so that the grinding speed is increased, and the grinding efficiency is improved; it should be noted that although the rope is intermittently engaged in equal radian, the control of the traction length of the traction rope 3 required for the reciprocating motion can be realized by adjusting the size of the hoisting driven drum 7, and the larger the diameter is, the longer the traction track of the traction rope 3 is, the larger the engagement in the same radian is, so that the motion amplitude required for the reciprocating motion can be satisfied.

In one embodiment of the application, the traction rope 3 is wound on the winding driven drum 7 through the guide wheel 6, the structure is simple, and the structural layout created by the invention can be improved and optimized through the guide wheel.

In one embodiment of the present application, the upper tile pillow 4 and the lower tile pillow 5 are fastened together, and in combination with the prior art, the basic setting operation of grinding is performed, and for convenience of understanding, since the upper tile pillow 4 and the lower tile pillow 5 belong to the workpiece to be processed and also belong to the participating parts of the grinding process, the setting can be replaced by a ground substrate or a ground standard die.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.