阅读说明：本技术 一种瓦间隙调整用的瓦键厚度测量校准装置及方法 (Tile key thickness measurement and calibration device and method for adjusting tile gap ) 是由 聂治学 柳世林 杨波 张树发 皮跃银 宋驳昊 吴封奎 曾阳麟 赵晓嘉 傅毓伟 刘 于 2021-09-25 设计创作，主要内容包括：本发明提供一种瓦间隙调整用的瓦键厚度测量校准装置及方法。该装置装置,包括带立杆的底座,其特征在于该底座上设有滑轨,滑轨一端设有与移动机构相连的移动支撑块、另一端设有其上带测量通孔、其背面带磁板的固定支撑块,以及与滑轨相连的锁紧块。在对本装置进行校准后,即可对旧瓦键的厚度进行精准测量,准确地获得新瓦键的加工厚度和旧瓦键的磨削量,提高轴瓦瓦间隙调整精度,节约轴瓦瓦间隙调整过程的时间,提高工作效率,避免测量误差带来的诸多问题,保障水轮发电机组导轴承正常运行。(The invention provides a device and a method for measuring and calibrating tile key thickness for adjusting tile gaps. The device comprises a base with a vertical rod, and is characterized in that a slide rail is arranged on the base, one end of the slide rail is provided with a movable supporting block connected with a moving mechanism, the other end of the slide rail is provided with a fixed supporting block provided with a measuring through hole and a magnetic plate on the back, and a locking block connected with the slide rail. After the device is calibrated, the thickness of an old tile key can be accurately measured, the machining thickness of a new tile key and the grinding amount of the old tile key are accurately obtained, the bearing bush clearance adjusting precision is improved, the time of the bearing bush clearance adjusting process is saved, the working efficiency is improved, a plurality of problems caused by measuring errors are avoided, and the guide bearing of the hydraulic generator set can be ensured to normally run.)

1. The utility model provides a tile key thickness measurement calibrating device that adjusting of tile clearance was used, is including the base of taking the pole setting, is equipped with the slide rail on its characterized in that this base, and slide rail one end is equipped with the removal supporting shoe that links to each other with moving mechanism, and the other end is equipped with the fixed supporting shoe that takes the measurement through-hole on it, its back area magnetic sheet to and the latch segment that links to each other with the slide rail.

2. The tile key thickness measuring and calibrating device for adjusting the tile gap according to claim 1, wherein the sliding rail is longitudinally and upwardly protruded from the middle of the base and integrally connected with the base, so that the working surface of the base forms a middle boss type sliding rail and two side concave platforms.

3. The tile key thickness measuring and calibrating device for adjusting the tile gap according to claim 1, wherein the fixed support block is a vertical plate, the lower end of the fixed support block is fixed in the middle of the sliding rail, the measuring through hole is arranged at the middle position of the upper part of the fixed support block, the magnetic plate is arranged on the back surface of the fixed support block and positioned at the periphery of the measuring through hole, and the magnetic plates at the two sides of the measuring through hole are respectively provided with a limit horizontal block.

4. The tile key thickness measuring and calibrating device for adjusting the tile gap according to claim 1, wherein the movable supporting block comprises a second vertical plate at the upper part, a horizontal screw hole is arranged at the middle position of the upper part of the second vertical plate, a groove matched with the boss type slide rail of the base is arranged at the middle position of the bottom of the second vertical plate, and horizontal sliding blocks matched with the lower concave platform of the base are respectively arranged at two sides of the groove.

5. The tile key thickness measuring and calibrating device for adjusting the tile gap according to claim 1, wherein the moving mechanism comprises a horizontal screw bolt connected with a horizontal screw hole at the middle position of the upper part of the moving support block, the outer end of the horizontal screw bolt passes through a second horizontal screw hole on the vertical rod of the base, extends outwards and is connected with the hand wheel, and a locking nut is arranged on the horizontal screw bolt outside the second horizontal screw hole.

6. The tile key thickness measuring and calibrating device for adjusting the tile gap according to claim 1, wherein the locking block is a rectangular plate, the middle part of the locking block is fixed on the slide rail at the back of the fixed supporting block through a plurality of screw holes and screws in the screw holes, the two sides of the locking block are respectively provided with a plurality of screw holes, the screw holes are internally provided with screw rods, and the upper ends of the screw rods are provided with handles.

7. The tile key thickness measurement calibration device for adjusting the tile gap according to claim 1, wherein the slide rail is provided with a guide block, the guide block is a T-shaped flat plate, the head of the T-shaped flat plate is fixed on the base through a plurality of screw holes and screws in the screw holes, and the tail of the T-shaped flat plate is arranged on the slide rail.

8. A method for measuring the thickness of a tile key based on the tile key thickness measurement calibration apparatus for measuring the thickness of a tile key according to claim 1, comprising the steps of:

1) calibration: loosening a locking nut on the horizontal screw and a plurality of screws on two sides of the locking block, moving the movable supporting block to protect the space between the movable supporting block and the fixed supporting block, completely cleaning each matching surface, operating a hand wheel to drive the horizontal screw to rotate in the forward direction, driving the movable supporting block to move until the movable supporting block is completely contacted with the fixed supporting block, operating the plurality of screws on two sides of the locking block to descend, locking the horizontal sliding blocks on two sides of the movable supporting block, checking the contact surface between the movable supporting block and the fixed supporting block and the contact surface between the bottom surface of the movable supporting block and the sliding rail by using a feeler gauge of 0.02mm, and finishing calibration by taking the condition that the feeler gauge cannot be plugged into the sliding rail;

2) and (3) measuring the thickness of the old tile key: loosening a locking nut on the horizontal screw and a plurality of screws on two sides of a locking block, operating a hand wheel to drive the horizontal screw to rotate reversely, enabling a movable supporting block to move back, placing an old tile key, enabling the working surface of the old tile key to face one side of the movable supporting block, obliquely placing a feeler with the thickness of 0.1mm or more at a boss in the middle of the back of the old tile key, operating the hand wheel to drive the horizontal screw to rotate forwardly, pushing the old tile key to move towards the fixed supporting block until the feeler contacts the fixed supporting block, enabling the feeler to be stressed to a slight force to be capable of drawing out the feeler, adjusting the feeler to face a special measuring hole on the fixed supporting block, operating a plurality of screws on two sides of the locking block to descend to lock the movable supporting block, and screwing the locking nut on the horizontal screw;

extending a measuring rod of a depth micrometer into a special measuring hole on a fixed supporting block from the back of the fixed supporting block until the measuring rod is contacted with the feeler gauge, then placing a feeler gauge base on a limiting horizontal block and moving to a magnetic plate on the back of the fixed supporting block to suck the feeler gauge base, rotating a micro-cylinder of the depth micrometer to measure the distance from the back of the fixed supporting block to the feeler gauge, then drawing out the feeler gauge and taking out an old tile key, placing the depth micrometer by using the same method, rotating the micro-cylinder until the measuring rod is contacted with the movable supporting block, measuring the distance from the back of the fixed supporting block to the movable supporting block, measuring the absolute value of the difference of the distances twice, and subtracting the thickness of the feeler gauge to obtain the thickness of the old tile key;

3) new tile key thickness determination: when the bearing bush clearance corresponding to the old bearing bush key needs to be reduced, the thickness of the old bearing bush key needs to be increased to meet the requirement, namely a new bearing bush key needs to be processed to replace the old bearing bush key;

adding the thickness of the old tile key and the variation of the gap of the bearing bush to obtain the theoretical thickness of the new tile key, deducting the machining error value to be +/-0.02 mm, and adding 0.03mm on the basis of the theoretical thickness to obtain the machining thickness of the new tile key;

4) determining the grinding amount of the old tile key: in the adjusting process of the shoe clearance, the clearance of some bearing bushes needs to be increased, when the clearance of the bearing bushes corresponding to the old shoe keys needs to be increased, the thickness of the old shoe keys needs to be reduced to increase the shoe clearance, and the increase of the shoe clearance is the grinding amount of the old shoe keys.

Technical Field

The invention relates to a device and a method for measuring and calibrating the thickness of a bush key, in particular to a device and a method for measuring and calibrating the thickness of a bush key for adjusting the gap of a bearing bush, and belongs to the technical field of hydraulic turbine power generation.

Background

In the hydraulic turbine generating working process, in order to ensure that a guide bearing of a hydraulic generator normally operates, when the temperature deviation of a bearing bush is large, the swing degree of a unit is large or exceeds a preset value, the gap of the bearing bush needs to be adjusted, in the adjusting process of the gap of the bearing bush, the thickness of an old bearing bush key and the corresponding bearing bush gap need to be measured, then the thickness of a new bearing bush key is determined according to measurement data and the set bearing bush gap, a corresponding new bearing bush key is processed, and the grinding amount of the old bearing bush key is determined. The thickness data of old tile key is acquireed through the external micrometer mostly to prior art, not only work efficiency is low, and measuring method is unreasonable, measuring error is big, the thickness size deviation that leads to new tile key machining dimension and requirement is big, the working face of new tile key is polished manually to the on-the-spot angle mill that needs use, make its thickness reduce to required numerical value, because use the manual dynamics of polishing of angle mill to be difficult to hold, it is relatively poor to lead to the planeness after new tile key working face is polished, make tile clearance adjustment precision poor, and intensity of labour is big among the tile clearance adjustment process, work efficiency is low. Therefore, there is a need for improvements in the prior art.

Disclosure of Invention

In order to overcome the defects in the prior art, one of the purposes of the present invention is to provide a device for measuring and calibrating the thickness of a bush key, which has both calibration and measurement functions, so as to process a new bush key meeting the requirements according to the measured thickness, provide a fast and accurate new bush key for adjusting the clearance between bearing bushes, reduce the polishing workload, and improve the working efficiency.

The second purpose of the invention is to provide a method for detecting the thickness of the bush key based on the bush key thickness measurement and calibration device, so that a new bush key meeting the requirement can be processed with high precision, and the problem that the adjustment progress is influenced by repeatedly manually polishing the working surface of the new bush key when the gap of the bush and the bush is adjusted on site is avoided.

The first purpose of the invention is achieved by the following technical scheme: the utility model provides a tile key thickness measurement calibrating device that adjusting of tile clearance was used, is including the base of taking the pole setting, is equipped with the slide rail on its characterized in that this base, and slide rail one end is equipped with the removal supporting shoe that links to each other with moving mechanism, and the other end is equipped with the fixed supporting shoe that takes the measurement through-hole on it, its back area magnetic sheet to and the latch segment that links to each other with the slide rail.

The sliding rail is longitudinally and upwards protruded at the middle part of the base and is connected with the base into a whole, so that the working surface of the base forms a boss type sliding rail at the middle part and concave platforms at two sides.

The fixed supporting block is a vertical plate, the lower end of the fixed supporting block is fixed in the middle of the sliding rail, the measuring through hole is formed in the middle of the upper portion of the fixed supporting block, the magnetic plate is arranged on the back face of the magnetic plate and located on the periphery of the measuring through hole, and the magnetic plates on the two sides of the measuring through hole are respectively provided with a limiting horizontal block, so that after a measuring rod of the depth micrometer extends into a special measuring hole from the back face of the fixed supporting block, the micrometer base of the depth micrometer is placed on the limiting horizontal block to move forwards until the micrometer base is sucked by the magnetic plate.

The movable supporting block comprises a second vertical plate on the upper portion, a horizontal screw hole is formed in the middle of the upper portion of the second vertical plate, a groove matched with the boss type sliding rail of the base is formed in the middle of the bottom of the second vertical plate, horizontal sliding blocks matched with the lower concave platform of the base are arranged on two sides of the groove respectively, and therefore the movable supporting block is driven to reciprocate along the boss type sliding rail through the moving mechanism after being arranged on the boss type sliding rail and the lower concave platform in a sliding mode.

The moving mechanism comprises a horizontal screw which is in threaded connection with a horizontal screw hole in the middle of the upper portion of the moving supporting block, the outer end of the horizontal screw penetrates through a second horizontal screw hole in the vertical rod of the base to extend outwards and then is connected with the hand wheel, and a locking nut is arranged on the horizontal screw outside the second horizontal screw hole, so that when the hand wheel is operated to drive the horizontal screw to rotate, the moving supporting block can be driven to move together with the horizontal screw, and the moving supporting block is fixed through the locking nut after being in place.

The locking block is a rectangular flat plate, the middle of the locking block is fixed on a slide rail positioned at the back of the fixed supporting block through a plurality of screw holes and screws in the screw holes, a plurality of screw holes are respectively arranged at two sides of the locking block, screw rods are arranged in the screw holes, and handles are arranged at the upper ends of the screw rods, so that after the screw rods are operated to ascend, the horizontal sliding blocks at two sides of the movable supporting block smoothly enter the space between the locking block and the concave platform of the base, and then after the screw rods descend, the horizontal sliding blocks at two sides of the movable supporting block can be locked, and the movable supporting block is fixed.

The sliding rail is provided with a guide block, the guide block is a T-shaped flat plate, the head of the T-shaped flat plate is fixed on the base through a plurality of screw holes and screws in the screw holes, and the tail of the T-shaped flat plate is arranged on the sliding rail, so that the movable supporting block can accurately reciprocate on the guide block and the concave platform after being arranged on the guide block and the concave platform.

The second purpose of the invention is achieved by the following technical scheme: a method for detecting the thickness of a tile key based on a tile key thickness measurement calibration device is characterized by comprising the following steps:

1) calibration: loosening a locking nut on the horizontal screw and a plurality of screws on two sides of the locking block, moving the movable supporting block to protect the space between the movable supporting block and the fixed supporting block, completely cleaning each matching surface, operating a hand wheel to drive the horizontal screw to rotate in the forward direction, driving the movable supporting block to move until the movable supporting block is completely contacted with the fixed supporting block, operating the plurality of screws on two sides of the locking block to descend, locking the horizontal sliding blocks on two sides of the movable supporting block, checking the contact surface between the movable supporting block and the fixed supporting block and the contact surface between the bottom surface of the movable supporting block and the sliding rail by using a feeler gauge of 0.02mm, and finishing calibration by taking the condition that the feeler gauge cannot be plugged into the sliding rail;

2) and (3) measuring the thickness of the old tile key: loosening a locking nut on the horizontal screw and a plurality of screws on two sides of a locking block, operating a hand wheel to drive the horizontal screw to rotate reversely, enabling a movable supporting block to move back, placing an old tile key, enabling the working surface of the old tile key to face one side of the movable supporting block, obliquely placing a feeler with the thickness of 0.1mm or more at a boss in the middle of the back of the old tile key, operating the hand wheel to drive the horizontal screw to rotate forwardly, pushing the old tile key to move towards the fixed supporting block until the feeler contacts the fixed supporting block, enabling the feeler to be stressed to a slight force to be capable of drawing out the feeler, adjusting the feeler to face a special measuring hole on the fixed supporting block, operating a plurality of screws on two sides of the locking block to descend to lock the movable supporting block, and screwing the locking nut on the horizontal screw;

extending a measuring rod of a depth micrometer into a special measuring hole on a fixed supporting block from the back of the fixed supporting block until the measuring rod is contacted with the feeler gauge, then placing a feeler gauge base on a limiting horizontal block and moving to a magnetic plate on the back of the fixed supporting block to suck the feeler gauge base, rotating a micro-cylinder of the depth micrometer to measure the distance from the back of the fixed supporting block to the feeler gauge, then drawing out the feeler gauge and taking out an old tile key, placing the depth micrometer by using the same method, rotating the micro-cylinder until the measuring rod is contacted with the movable supporting block, measuring the distance from the back of the fixed supporting block to the movable supporting block, measuring the absolute value of the difference of the distances twice, and subtracting the thickness of the feeler gauge to obtain the thickness of the old tile key;

3) new tile key thickness determination: when the bearing bush clearance corresponding to the old bearing bush key needs to be reduced, the thickness of the old bearing bush key needs to be increased to meet the requirement, namely a new bearing bush key needs to be processed to replace the old bearing bush key;

adding the thickness of the old tile key and the variation of the gap of the bearing bush to obtain the theoretical thickness of the new tile key, deducting the machining error value to be +/-0.02 mm, and adding 0.03mm on the basis of the theoretical thickness to obtain the machining thickness of the new tile key;

4) determining the grinding amount of the old tile key: in the adjusting process of the shoe clearance, the clearance of some bearing bushes needs to be increased, when the clearance of the bearing bushes corresponding to the old shoe keys needs to be increased, the thickness of the old shoe keys needs to be reduced to increase the shoe clearance, and the increase of the shoe clearance is the grinding amount of the old shoe keys.

The invention has the following advantages and effects: by adopting the scheme, after the device can be conveniently calibrated, the thickness of the old tile key can be accurately measured, the processing thickness of the new tile key and the grinding amount of the old tile key are accurately obtained, the gap adjustment precision of the bearing bush and the tile is improved, the time of the gap adjustment process of the bearing bush and the tile is saved, the working efficiency is improved, a plurality of problems caused by measurement errors are avoided, and the guide bearing of the hydroelectric generating set can normally run.

Drawings

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

fig. 2 is a diagram of the moving support block of fig. 1.

Detailed Description

The invention is further described with reference to the following figures and examples.

The invention provides a bearing bush clearance measuring and calibrating device, which comprises a base 1 with an upright rod 2, wherein a slide rail is arranged on the base 1, a movable supporting block 7 connected with a moving mechanism is arranged at the front end of the slide rail, a fixed supporting block 9 with a measuring through hole 11 and a magnetic plate 10 on the back is arranged at the rear end of the slide rail, and a locking block 14 connected with a slide rail 15;

the slide rail 15 longitudinally and upwards protrudes from the middle part of the base 1 and is connected with the base 1 into a whole, so that the working surface of the base 1 forms a boss type slide rail 15 in the middle and concave platforms 20 at two sides;

the fixed supporting block 9 is a vertical plate, the lower end of the fixed supporting block is fixed in the middle of the boss type slide rail 15, the measuring through hole 11 is arranged in the middle of the upper part of the fixed supporting block, the magnetic plate 10 is arranged on the back surface of the fixed supporting block and is positioned at the periphery of the measuring through hole 11, and the magnetic plates 10 on the two sides of the measuring through hole 11 are respectively provided with a limiting horizontal block 16, so that after a measuring rod of the depth micrometer 12 extends into the special measuring through hole 11 on the fixed supporting block 9 from the back surface of the fixed supporting block 9, a micrometer base of the depth micrometer is placed on the limiting horizontal block 16 to move forwards until the micrometer base is sucked by the magnetic plate 10;

the movable supporting block 7 comprises a second vertical plate at the upper part, a horizontal screw hole 19 is formed in the middle of the upper part of the second vertical plate, a groove 17 matched with the boss type slide rail 15 of the base 1 is formed in the middle of the bottom of the second vertical plate, horizontal sliding blocks 18 matched with the lower concave platform 20 of the base 1 are respectively arranged on two sides of the groove 17, so that the movable supporting block 7 is driven to reciprocate along the boss type slide rail 15 through a moving mechanism after being arranged on the boss type slide rail 15 and the lower concave platform 20 in a sliding manner;

the moving mechanism comprises a horizontal screw rod 5 which is in threaded connection with a horizontal screw hole 19 in the middle of the upper part of the moving supporting block 7, the outer end of the horizontal screw rod 5 penetrates through a second horizontal screw hole in the vertical rod 2 of the base 1 and extends outwards to be connected with the hand wheel 3, and a locking nut 4 is arranged on the horizontal screw rod 5 outside the second horizontal screw hole, so that when the hand wheel 3 is operated to drive the horizontal screw rod 5 to rotate, the moving supporting block 7 can be driven to move together with the horizontal screw rod 5, and the horizontal screw rod 5 is fixed through the locking nut 4 after being in place;

the locking block 14 is a rectangular flat plate, the middle part of the locking block is fixed on a boss type slide rail 15 positioned at the back of the fixed supporting block 9 through a plurality of screw holes and screws in the screw holes, a plurality of screw holes are respectively arranged at two sides of the locking block, a screw 13 is arranged in each screw hole, a handle is arranged at the upper end of each screw 13, so that after the screw 13 is driven by the control handle to ascend, the horizontal sliders 18 at two sides of the movable supporting block 7 smoothly enter between the locking block 14 and a concave platform 20 of the base 1, and then after the screw 13 descends by the control handle, the horizontal sliders 18 at two sides of the movable supporting block 7 can be locked, and the movable supporting block 7 is fixed.

The guide block 21 is arranged on the slide rail 15, the guide block 21 is a T-shaped flat plate, the head of the T-shaped flat plate is fixed on the base 1 through a plurality of screw holes and screws in the screw holes, and the tail of the T-shaped flat plate is arranged on the boss type slide rail 15, so that the movable supporting block 7 can accurately reciprocate on the guide block 21 and the lower concave platform 20 after being arranged on the guide block.

The invention provides a method for detecting the thickness of a tile key based on a tile key thickness measurement calibration device, which comprises the following steps:

1) calibration: loosening a locking nut 4 on a horizontal screw rod 5 and a plurality of screw rods 13 on two sides of a locking block 14, moving a movable supporting block 7 to move to protect the distance from a fixed supporting block 9, completely cleaning each matching surface, operating a hand wheel 3 to drive the horizontal screw rod 5 to rotate in the forward direction, driving the movable supporting block 7 to move to be completely contacted with the fixed supporting block 9, operating the plurality of screw rods 13 on two sides of the locking block 14 to descend, checking the contact surface of the movable supporting block 7 and the fixed supporting block 9 and the contact surface of the bottom surface of the movable supporting block 7 and a slide rail 15 by using a feeler 6 with the diameter of 0.02mm, and finishing calibration by using the condition that the feeler 6 cannot be plugged;

2) and (3) measuring the thickness of the old tile key: loosening a locking nut 4 on a horizontal screw rod 5 and a plurality of screw rods 13 on two sides of a locking block 14, operating a hand wheel 3 to drive the horizontal screw rod 5 to rotate reversely, so that a movable supporting block 7 moves back, putting an old tile key 8, enabling the working surface of the old tile key 8 to face the movable supporting block 7, obliquely placing a feeler 6 with the thickness of 0.1mm or more at a boss in the middle of the back surface of the old tile key 8, operating the hand wheel 3 to drive the horizontal screw rod 5 to rotate forward, pushing the old tile key 8 to move towards a fixed supporting block 9 until the feeler 6 contacts the fixed supporting block 9, enabling the feeler 6 to be pulled out when the feeler 6 is stressed to exert a slight force, adjusting the feeler 6 to face a special measuring through hole 11 on the fixed supporting block 9, operating the plurality of screw rods 13 on two sides of the locking block 14 to descend, and screwing the locking nut 4 on the horizontal screw rod 5 tightly;

extending a measuring rod of a depth micrometer 12 into a special measuring through hole 11 on a fixed supporting block 9 from the back of the fixed supporting block 9 until the measuring rod contacts with a feeler 6, then placing the feeler base on a limiting horizontal block 16 and moving a magnetic plate 10 on the back of the fixed supporting block 9 to suck the feeler base, rotating a micro-cylinder of the depth micrometer to measure the distance from the back of the fixed supporting block 9 to the feeler 6, then drawing out the feeler 6 and taking out an old tile key 8, placing the depth micrometer 12 by using the same method, rotating the micro-cylinder of the depth micrometer until the measuring rod contacts with the movable supporting block 7, measuring the distance from the back of the fixed supporting block 9 to the movable supporting block 7, measuring the absolute value of the difference of the distances twice, and subtracting the thickness of the feeler to obtain the thickness of the old tile key 8;

3) new tile key thickness determination: when the bearing bush clearance corresponding to the old bearing bush key needs to be reduced, the thickness of the old bearing bush key needs to be increased to meet the requirement, namely a new bearing bush key needs to be processed to replace the old bearing bush key;

and adding the thickness of the old tile key and the variation of the gap of the bearing bush to obtain the theoretical thickness of the new tile key, deducting the machining error value of +/-0.02 mm, and adding 0.03mm on the basis of the theoretical thickness to obtain the machining thickness of the new tile key.

4) Determining the grinding amount of the old tile key: in the adjusting process of the shoe clearance, the clearance of some bearing bushes needs to be increased, when the clearance of the bearing bushes corresponding to the old shoe keys needs to be increased, the thickness of the old shoe keys needs to be reduced to increase the shoe clearance, and the increase of the shoe clearance is the grinding amount of the old shoe keys.