CN108072336B - Accurate detection and adjustment process for full-stroke running track of telescopic sleeve of material loading and unloading machine - Google Patents
Accurate detection and adjustment process for full-stroke running track of telescopic sleeve of material loading and unloading machine Download PDFInfo
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- CN108072336B CN108072336B CN201611003602.8A CN201611003602A CN108072336B CN 108072336 B CN108072336 B CN 108072336B CN 201611003602 A CN201611003602 A CN 201611003602A CN 108072336 B CN108072336 B CN 108072336B
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- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
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Abstract
The invention belongs to the technical field of adjustment of guide clearance of a telescopic sleeve of a loading and unloading machine of a pressurized water reactor nuclear power station, and particularly relates to a process for accurately detecting and adjusting a full-stroke running track of the telescopic sleeve of the loading and unloading machine, which is used for solving the problems of inaccurate positioning and overlarge shaking of a fuel assembly in the loading and unloading process. The method is characterized by comprising the steps of connecting a test device, adjusting the test device, testing the running straightness of an inner sleeve, adjusting the verticality of an outer sleeve, adjusting the concentricity of the inner sleeve and the outer sleeve, adjusting a first layer of guide wheels, adjusting a second layer of guide wheels, adjusting other five layers of guide wheels and testing the running straightness of the inner sleeve. The invention solves the problem that the handling machine cannot measure the running straightness of the inner sleeve, provides the adjustment process of the guide clearance of the inner sleeve, can enable the inner sleeve guide wheel of the handling machine to be in the optimal working state, ensures the running straightness of the inner sleeve, improves the accuracy and reliability of the handling machine for positioning the fuel assembly, and obviously reduces the risk of fuel scraping damage.
Description
Technical Field
The invention belongs to the technical field of adjustment of guide clearance of telescopic sleeves of loading and unloading machines of pressurized water reactor nuclear power stations, and particularly relates to a process for accurately detecting and adjusting full-stroke running tracks of telescopic sleeves of loading and unloading machines.
Background
The loading and unloading of the reactor core are finished under the water with the depth of 12 meters, the arrangement of the fuel assemblies in the reactor core is very tight, the theoretical clearance is only about 1mm, and therefore, the loading and unloading machine is required to have high positioning precision.
The part of the loading and unloading machine directly connected with the fuel assembly is an inner sleeve which is guided by seven layers of guide wheels on the outer sleeve. The positioning accuracy of the fuel assembly mainly depends on the accuracy of the inner sleeve, so the positioning accuracy of the inner sleeve needs to be accurately measured. The method can well judge the positioning accuracy of the inner sleeve at the lower limit, but has the limitation that the whole dynamic process of the movement of the inner sleeve cannot be tested.
There is some degree of rocking or rotation of the inner sleeve and fuel assembly during the ascent and descent due to various factors. The seven layers of guide wheels can guide and position the inner sleeve to limit the rotation and swing of the inner sleeve. If the guide wheel clearance is too large, the rotation and the swing of the fuel assembly cannot be effectively limited; if the guide wheel clearance is too small, it is difficult to ensure that the clearances of the seven layers of guide wheels are uniform, and the swinging of the fuel assembly is aggravated.
The rotation and oscillation of the inner sleeve can cause a change in the position of the fuel assembly during loading and unloading, causing the fuel assembly to scrape against adjacent assemblies. The primary mode of fuel damage is lattice grid pull which is directly caused by the scraping of fuel assemblies against each other.
In order to meet the safe operation of the fuel assembly in the reactor core, the invention needs to invent a process capable of accurately detecting the full-stroke motion track of the inner sleeve and finish the accurate adjustment of the guide clearance of the telescopic sleeve.
Disclosure of Invention
The invention aims to provide a process for accurately detecting the full-stroke movement track of an inner sleeve and a set of guide wheel gap adjusting process aiming at the defects of the prior art, and aims to solve the problems of inaccurate positioning and excessive shaking of a fuel assembly in the loading and unloading process.
The invention is realized by the following steps:
1. the process for accurately detecting and adjusting the full-stroke running track of the telescopic sleeve of the unloading machine comprises the following steps of:
the method comprises the following steps: connection test device
Step 1.1: placing the test device at the bottom of a refueling water tank and under an inner sleeve of a loading and unloading machine;
step 1.2: descending an inner sleeve of the loading and unloading machine to enable a positioning pin of the gripping apparatus to enter a positioning hole of the testing device;
step 1.3: operating the gripping apparatus of the loading and unloading machine to open the 4 groups of claws and hook the test device;
step 1.4: lifting the inner sleeve to retract the inner sleeve to the outer sleeve;
step two: adjustment test device
Step 2.1: loosening all guide wheel bolts on the outer sleeve of the loading and unloading machine, removing the guide wheel frame, and removing the guide wheels along with the guide wheel frame to enable the inner sleeve to be in a free state;
step 2.2: the inner sleeve is descended to enable the test device to be close to the bottom of the material changing pool;
step 2.3: placing a laser receiving plate below a laser emitting device;
step 2.4: starting a laser emitting device;
step 2.5: lifting the inner sleeve, observing the change of the position of the laser emitting device at the laser receiving plate, and adjusting the direction of the laser emitting device according to the change of the position of the laser spot;
step 2.6: repeatedly adjusting and testing according to the step 2.5 until the position of the light spot is not changed when the inner sleeve is lifted;
step 2.7: as shown in fig. 3, the guide wheel frame is reinstalled, and the guide wheel bolts are fastened again;
step three: testing inner sleeve operating straightness
Step 3.1: placing a laser receiving plate on the lower core plate; if the reactor core is unavailable, the laser receiving plate can be placed at the bottom of the tipping pit and right below the middle of the two rails of the fuel transfer trolley;
step 3.2: moving the loading and unloading machine to the position above the laser receiving plate, so that the laser receiving plate can receive light spots of the laser emitting device;
step 3.3: the full-stroke lifting inner sleeve monitors the moving range of the light spot on the laser receiving plate, confirms that the center deviation of the light spot is not more than 3mm, and otherwise needs to be adjusted according to the following process steps;
step four: adjusting the perpendicularity of the outer sleeve
Step 4.1: successively hanging plumb lines in the directions of 0 degree, 90 degrees, 180 degrees and 270 degrees of the outer sleeve, and respectively measuring the distances D1, D2 and D3 from the outer wall of the outer sleeve to the plumb line at the lower part, the middle part and the upper part by using steel plate rulers at 3 positions;
step 4.2: d1, D2 and D3 obtained by analysis and measurement are used for judging whether the perpendicularity of the outer sleeve meets the preset precision requirement or not; if not, adjusting by increasing or decreasing the thickness of the gasket below the outer sleeve support;
step 4.3: measuring the perpendicularity of the outer sleeve again according to the step 4.1, and if the preset precision requirement is not met, continuing to adjust by increasing or decreasing the gaskets according to the step 4.2;
step five: adjusting the concentricity of the inner and outer sleeves
Step 5.1: lifting the inner sleeve, confirming whether abnormal impact sound of the inner sleeve and the guide wheel exists, and if the abnormal impact sound exists, checking whether a steel wire rope for lifting the inner sleeve is positioned in the middle position of the outer sleeve;
step 5.2: if the steel wire rope is not in the middle position of the outer sleeve, the thickness of a rubber block gasket at the lower end of the main lifting support is adjusted, so that the main lifting winch rotates until the steel wire rope is in the middle position of the outer sleeve; the inner sleeve is positioned at the middle position of the outer sleeve;
step six: removing all guide wheels
Loosening all guide wheel bolts, and removing the guide wheel frame and the gasket;
step seven: adjusting first layer guide wheel
Step 7.1: moving the material loading and unloading machine to the position above the tipping pit, and lowering the inner sleeve to the lower limit position at the position;
step 7.2: descending the inner sleeve to enable the inner sleeve to penetrate between the two tracks of the fuel transfer trolley and descend to a lower limit position; only the lowest 2 layers of guide wheels can realize the guide;
step 7.3: adjusting the thickness of guide wheel gaskets on two sides of the first layer of guide wheel to ensure that the guide wheel just contacts the inner sleeve; the laser facula starts to move as a basis;
step 7.4: adding a gasket with the thickness of 1mm to the two groups of guide wheels;
step 7.5: re-fastening the guide wheel bolt;
step eight: adjusting the guide wheel of the second layer
Step 8.1: adjusting the thickness of guide wheel gaskets at two sides of the second layer of guide wheels to ensure that the guide wheel gaskets just contact the inner sleeve; the laser facula starts to move as a basis;
step 8.2: adding a gasket with the thickness of 1mm to the two groups of guide wheels to enable the guide wheels to be far away from the inner sleeve;
step 8.3: re-fastening the guide wheel bolt;
step nine: adjusting other five layers of guide wheels
Step 9.1: lifting the inner sleeve to 1m in height, and enabling the inner sleeve to enter the third layer of guide wheels;
step 9.2: adjusting the thickness of guide wheel gaskets of the guide wheels at two sides to ensure that the guide wheel gaskets just contact the inner sleeve; the laser facula starts to move as a basis;
step 9.3: adding a gasket with the thickness of 1mm to the two groups of guide wheels to enable the guide wheels to be far away from the inner sleeve;
step 9.4: re-fastening the guide wheel bolt;
step 9.5: repeating the steps from 9.1 to 9.4, and adjusting the fourth, fifth, sixth and seventh layers of guide wheels in sequence;
step ten: testing inner sleeve operating straightness
Step 10.1: the inner sleeve is lifted in a full stroke manner, the position change of a light spot on the laser receiving plate is monitored and recorded, and the deviation of the center of the light spot is confirmed to be not more than 3 mm;
step 10.2: if the inner sleeve is jammed during operation, a spacer with the thickness of 0.1mm is added to each group of guide wheels, and the test is carried out again until the requirements are met.
2. The accurate detection and adjustment process for the full-stroke running track of the telescopic sleeve of the unloading machine as claimed in claim 1, is characterized in that: the preset precision requirement in the step 4.3 is as follows: the maximum error of the perpendicularity of the outer sleeve cannot exceed 4.8 mm.
3. The accurate detection and adjustment process for the full-stroke running track of the telescopic sleeve of the unloading machine as claimed in claim 1, is characterized in that: the test device comprises a fixing device, a laser emitting device and a laser receiving plate; the upper end of the fixing device is provided with a positioning hole which is fixedly connected with a gripping apparatus of the material loading and unloading machine through a claw and a positioning pin; the laser emitting device is fixed at the lower part of the fixing device; the lower part of the fixing device is provided with a through hole, and laser emitted by the laser emitting device is projected onto a laser receiving plate positioned below the fixing device through the through hole.
The invention has the beneficial effects that:
the method comprises the steps of connecting a test device, adjusting the test device, testing the running straightness of an inner sleeve, adjusting the verticality of an outer sleeve, adjusting the concentricity of the inner sleeve and the outer sleeve, adjusting a first layer of guide wheels, adjusting a second layer of guide wheels, adjusting other five layers of guide wheels and testing the running straightness of the inner sleeve. The invention solves the problem that the handling machine cannot measure the running straightness of the inner sleeve, provides a set of inner sleeve guide gap adjusting process, can enable the inner sleeve guide wheel of the handling machine to be in an optimal working state, ensures the running straightness of the inner sleeve, improves the accuracy and reliability of the handling machine for positioning the fuel assembly, and obviously reduces the risk of fuel scraping damage.
Drawings
FIG. 1 is a schematic view of a dedicated test unit attached to a handler gripper;
FIG. 2 is a schematic view of an arrangement of guide wheels of the outer sleeve;
FIG. 3 is a schematic view of the adjustment of the guide wheel clearance;
FIG. 4 is a schematic view of the outer sleeve perpendicularity adjustment;
FIG. 5 is a schematic view of the concentricity adjustment of the inner and outer sleeves.
Wherein: 1. the material handling machine comprises a material handling machine gripper, 2 a claw, 3 a positioning pin, 4 a fixing device, 5 a laser emitting device, 6 a laser receiving plate, 7 an outer sleeve, 8 a guide wheel assembly, 9 an inner sleeve, 10 a guide wheel frame, 11 a guide wheel, 12 a guide wheel bolt, 13 a guide wheel gasket, 14 an outer sleeve support, 15 an outer sleeve support gasket, 16 a plumb line, 17 a main lifting winch, 18 a steel wire rope, 19 a main lifting support beam, 20 a rubber block, 21 a rubber block gasket and 22 a main lifting rotating shaft.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1, the test device used in the present invention is connected to a handler gripper 1 using a gripper 2 of the handler and positioning is performed using a positioning pin 3 of the handler gripper 1. The testing device is provided with a laser emitting device 5, the laser emitting direction can be adjusted through 4 groups of adjusting screws so as to ensure that the laser direction is parallel to the central axis of the inner sleeve, the position of a light spot on the laser receiving plate 6 represents the position of the inner sleeve, and the running straightness of the inner sleeve can be measured through the change of the position of the light spot in the lifting process of the inner sleeve.
As shown in fig. 2, the guide wheel assembly 8 (totally seven layers) is mounted on the outer sleeve 7 of the loading and unloading machine, and due to the mounting perpendicularity error of the outer sleeve 7 and other reasons, the 7 guide wheels on one side are not in a straight line, so that the inner sleeve 9 is easy to collide and shake during up-and-down movement, and the safety of loading and unloading operation is further affected. In order to improve the running stability of the inner sleeve, the upper and lower seven layers of guide wheels are required to be ensured to be in a straight line.
As shown in fig. 3, each layer of guide wheels comprises 2 guide wheel assemblies. The guide wheel assembly consists of a guide wheel frame 10 and a guide wheel 11, which is fixed to the outer sleeve by a guide wheel bolt 12 and the gap is adjusted by a guide wheel washer 13: when the thickness of the guide wheel gasket 13 is increased, the guide wheel 11 is far away from the inner sleeve 9; when the thickness of the guide wheel shim 13 is reduced, the guide wheel 11 will be closer to the inner sleeve 9.
As shown in fig. 4, the outer sleeve 7 is fixed to the loader trolley deck by means of a support 14. The perpendicularity of the outer sleeve can be measured using the plumb line 16; by adjusting the thickness of the spacer 15 at the lower end of the support 14, the perpendicularity of the outer sleeve can be adjusted to an optimum state.
As shown in fig. 5, the loader main hoisting winch 17 is hinged to the base at one end by a shaft 22 and supported at the other end by a beam 19 and a rubber block 20. By adjusting the thickness of the rubber block gasket 21, the main hoisting winch 17 can rotate along the main hoisting rotating shaft 22, and the position of the steel wire rope 18 relative to the outer sleeve 7 is adjusted, so that the inner sleeve 9 is ensured to be in the middle position of the outer sleeve 7.
A process for accurately detecting and adjusting the full-stroke running track of a telescopic sleeve of a material loading and unloading machine comprises the following steps:
the method comprises the following steps: connection test device
Step 1.1: the test device is placed at the bottom of the refueling water tank and under the inner sleeve 9 of the loading and unloading machine.
Step 1.2: and descending the inner sleeve 9 of the loading and unloading machine to enable the positioning pin 3 of the gripping apparatus to enter the positioning hole of the test device.
Step 1.3: the handler gripper 1 is operated so that 4 sets of fingers 2 are opened and hooked to the test device, as shown in fig. 1.
Step 1.4: the inner sleeve 9 is lifted to retract it to the outer sleeve 7.
Step two: adjustment test device
Step 2.1: as shown in fig. 3, all the guide wheel bolts 12 on the outer sleeve 7 of the handler are loosened, the guide wheel frame 10 is removed, and the guide wheels 11 are removed together with the guide wheel frame 10, so that the inner sleeve 9 is in a free state.
Step 2.2: the inner sleeve 9 is lowered to bring the test unit close to the bottom of the refueling water tank.
Step 2.3: as shown in fig. 1, the laser receiving panel 6 is placed below the laser emitting device 5.
Step 2.4: the laser emitting device 5 is turned on.
Step 2.5: and lifting the inner sleeve 9, observing the change of the spot position of the laser emitting device 5 on the laser receiving plate 6, and adjusting the direction of the laser emitting device 5 according to the change of the spot position.
Step 2.6: and (5) repeatedly adjusting and testing according to the step 2.5 until the position of the light spot is not changed when the inner sleeve 9 is lifted.
Step 2.7: as shown in fig. 3, the guide wheel frame 10 is reinstalled and the guide wheel bolts 12 are retightened.
Step three: testing inner sleeve operating straightness
Step 3.1: placing the laser receiver plate 6 on the lower core plate; if the reactor core is unavailable, the laser receiving plate 6 can also be placed at the bottom of the tipping pit and right below the middle of the two rails of the fuel transfer trolley.
Step 3.2: the handler is moved above the laser receiver board 6 so that the laser receiver board 6 can receive the light spot of the laser transmitter 5.
Step 3.3: and lifting the inner sleeve 9 in the full stroke, monitoring the moving range of the light spot on the laser receiving plate 6, and confirming that the center deviation of the light spot is not more than 3mm, otherwise, adjusting according to the following process steps.
Step four: adjusting the perpendicularity of the outer sleeve
Step 4.1: as shown in fig. 4, the vertical line 16 is hung in the directions of 0 °, 90 °, 180 ° and 270 ° of the outer sleeve 7 one after another, and the distances D1, D2 and D3 of the outer wall of the outer sleeve 7 from the vertical line are measured at 3 positions of the lower part, the middle part and the upper part, respectively, with steel plate rulers.
Step 4.2: and D1, D2 and D3 obtained by the measurement are analyzed to judge whether the perpendicularity of the outer sleeve 7 meets the preset precision requirement. If not, the thickness of the spacer 15 below the outer sleeve support 14 is increased or decreased for adjustment.
Step 4.3: and (4) measuring the perpendicularity of the outer sleeve 7 again according to the step 4.1, and if the preset precision requirement is still not met, continuing to increase or decrease the gaskets according to the step 4.2 for adjustment. The maximum verticality error of the outer sleeve 7 does not exceed 4.8mm, and the verticality of the outer sleeve is improved as much as possible in order to improve the rotation positioning precision of the inner sleeve of the loading and unloading machine.
Step five: adjusting the concentricity of the inner and outer sleeves
Step 5.1: the inner sleeve 9 is lifted and lowered, whether or not there is an abnormal impact sound between the inner sleeve 9 and the guide wheel 11 is checked, and if there is an abnormal impact sound, whether or not the wire rope 18 for lifting the inner sleeve 9 is located at the center position of the outer sleeve 7 is checked.
Step 5.2: as shown in fig. 5, if the wire rope 18 is not located at the center of the outer sleeve 7, the thickness of the rubber block pad 21 at the lower end of the main hoisting support rail 19 is adjusted to rotate the main hoisting winch 17 until the wire rope 18 is located at the center of the outer sleeve 7. The inner sleeve 9 will now be in the central position of the outer sleeve 7.
Step six: removing all guide wheels
As shown in fig. 2 and 3, all the guide wheel bolts 12 are loosened, and the guide wheel frame 10 and the shim 13 are removed.
Step seven: adjusting first layer guide wheel
Step 7.1: the loader is moved over the tipping pit, in which position the inner sleeve 9 can be lowered to the lower limit.
Step 7.2: the inner sleeve 9 is lowered to pass between the two rails of the fuel transfer trolley and is lowered to the lower limit position. Only the lowest 2 layers of guide wheels can realize the guide.
Step 7.3: as shown in fig. 3, the thickness of the guide wheel pads 13 on both sides of the guide wheel of the first layer is adjusted so that the guide wheel 11 just contacts the inner sleeve 9. Based on the laser spot starting to move.
Step 7.4: and a gasket with the thickness of 1mm is added to the two groups of guide wheels 11.
Step 7.5: the guide wheel bolts 12 are retightened.
Step eight: adjusting the guide wheel of the second layer
Step 8.1: as shown in fig. 3, the thickness of the guide wheel pads 13 on both sides of the second layer of guide wheels is adjusted so as to just contact the inner sleeve 9. Based on the laser spot starting to move.
Step 8.2: and a gasket with the thickness of 1mm is added on each of the two groups of guide wheels, so that the guide wheels 11 are far away from the inner sleeve 9.
Step 8.3: the guide wheel bolts 12 are retightened.
Step nine: adjusting other five layers of guide wheels
Step 9.1: the inner sleeve 9 is lifted 1 meter high, and the inner sleeve 9 enters the third layer of guide wheels.
Step 9.2: as shown in fig. 3, the thickness of the guide wheel shim 13 of the guide wheels on both sides is adjusted so as to just contact the inner sleeve 9. Based on the laser spot starting to move.
Step 9.3: and a gasket with the thickness of 1mm is added on each of the two groups of guide wheels, so that the guide wheels 11 are far away from the inner sleeve 9.
Step 9.4: the guide wheel bolts 12 are retightened.
Step 9.5: and (5) repeating the steps from 9.1 to 9.4, and adjusting the fourth, fifth, sixth and seventh layers of guide wheels in sequence.
Step ten: testing inner sleeve operating straightness
Step 10.1: and lifting the inner sleeve 9 in the full stroke, monitoring and recording the position change of the light spot on the laser receiving plate 6, and confirming that the center deviation of the light spot is not more than 3 mm.
Step 10.2: if the inner sleeve 9 is jammed during operation, a spacer with the thickness of 0.1mm is added to each group of guide wheels, and the test is carried out again until the requirements are met.
The testing device comprises a fixing device 4, a laser emitting device 5 and a laser receiving plate 6. The upper end of the fixing device 4 is provided with a positioning hole which is fixedly connected with the gripping apparatus of the material loading and unloading machine through the hook claw 2 and the positioning pin 3. The laser transmitter 5 is fixed to the lower portion of the holder 4. The lower part of the fixing device 4 is provided with a through hole through which the laser emitted by the laser emitting device 5 is projected onto the laser receiving plate 6 positioned below the fixing device 4.
Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be within the protection scope of the present invention.
Claims (2)
1. The process for accurately detecting and adjusting the full-stroke running track of the telescopic sleeve of the unloading machine comprises the following steps of:
the method comprises the following steps: connection test device
Step 1.1: placing the test device at the bottom of a refueling water tank and under an inner sleeve (9) of a loading and unloading machine;
step 1.2: an inner sleeve (9) of the loading and unloading machine is descended, so that the positioning pin (3) of the gripping apparatus enters a positioning hole of the test device;
step 1.3: operating the gripping apparatus (1) of the loading and unloading machine to open 4 groups of claws (2) and hook the test device;
step 1.4: lifting the inner sleeve (9) to retract it to the outer sleeve (7);
step two: adjustment test device
Step 2.1: loosening all guide wheel bolts (12) on the outer sleeve (7) of the loading and unloading machine, removing the guide wheel frame (10), and removing the guide wheels (11) along with the guide wheel frame (10) to enable the inner sleeve (9) to be in a free state;
step 2.2: the inner sleeve (9) is descended to enable the test device to be close to the bottom of the material changing pool;
step 2.3: a laser receiving plate (6) is arranged below a laser emitting device (5);
step 2.4: starting a laser emitting device (5);
step 2.5: lifting the inner sleeve (9), observing the change of the spot position of the laser emitting device (5) on the laser receiving plate (6), and adjusting the direction of the laser emitting device (5) according to the change of the spot position;
step 2.6: repeatedly adjusting and testing according to the step 2.5 until the position of the light spot is not changed when the inner sleeve (9) is lifted;
step 2.7: the guide wheel frame (10) is reinstalled, and the guide wheel bolt (12) is fastened again;
step three: testing inner sleeve operating straightness
Step 3.1: placing a laser receiving plate (6) on the lower core plate; if the reactor core is unavailable, the laser receiving plate (6) can be placed at the bottom of the tipping pit and right below the middle of the two rails of the fuel transfer trolley;
step 3.2: moving the loading and unloading machine to the position above the laser receiving plate (6) so that the laser receiving plate (6) can receive light spots of the laser emitting device (5);
step 3.3: the full-stroke lifting inner sleeve (9) monitors the moving range of the light spot on the laser receiving plate (6), confirms that the center deviation of the light spot is not more than 3mm, and otherwise, needs to be adjusted according to the following process steps;
step four: adjusting the perpendicularity of the outer sleeve
Step 4.1: hanging plumb lines (16) in directions of 0 degrees, 90 degrees, 180 degrees and 270 degrees of the outer sleeve (7) successively, and measuring distances D1, D2 and D3 of the outer wall of the outer sleeve (7) from the plumb lines at 3 positions of the lower part, the middle part and the upper part respectively by using steel plate rulers;
step 4.2: d1, D2 and D3 obtained by analysis and measurement are used for judging whether the perpendicularity of the outer sleeve (7) meets the preset precision requirement or not; if not, adjusting by increasing or decreasing the thickness of the gasket (15) below the outer sleeve support (14);
step 4.3: measuring the perpendicularity of the outer sleeve (7) again according to the step 4.1, and if the preset precision requirement is still not met, continuing to increase or decrease the gaskets to adjust according to the step 4.2;
step five: adjusting the concentricity of the inner and outer sleeves
Step 5.1: a lifting inner sleeve (9) for confirming whether abnormal impact sound of the inner sleeve (9) and the guide wheel (11) exists or not, if so, checking whether a steel wire rope (18) for lifting the inner sleeve (9) is in the middle position of the outer sleeve (7) or not;
step 5.2: if the steel wire rope (18) is not in the middle position of the outer sleeve (7), adjusting the thickness of a rubber block gasket (21) at the lower end of a main lifting support horizontal shaft (19) to enable a main lifting winch (17) to rotate until the steel wire rope (18) is in the middle position of the outer sleeve (7); the inner sleeve (9) is positioned at the middle position of the outer sleeve (7);
step six: removing all guide wheels
Loosening all guide wheel bolts (12), and removing the guide wheel frame (10) and the gasket (13);
step seven: adjusting first layer guide wheel
Step 7.1: moving the loading and unloading machine to the position above the tipping pit, and lowering the inner sleeve (9) to the lower limit position at the position;
step 7.2: descending the inner sleeve (9) to enable the inner sleeve to penetrate between the two tracks of the fuel transfer trolley and descend to a lower limit position; only the lowest 2 layers of guide wheels can realize the guide;
step 7.3: adjusting the thickness of guide wheel gaskets (13) on two sides of the first layer of guide wheel to ensure that the guide wheel (11) just contacts the inner sleeve (9); the laser facula starts to move as a basis;
step 7.4: adding a gasket with the thickness of 1mm to the two groups of guide wheels (11);
step 7.5: retightening the guide wheel bolt (12);
step eight: adjusting the guide wheel of the second layer
Step 8.1: adjusting the thickness of guide wheel gaskets (13) on two sides of the second layer of guide wheels to ensure that the guide wheels just contact the inner sleeve (9); the laser facula starts to move as a basis;
step 8.2: a gasket with the thickness of 1mm is added on each of the two groups of guide wheels, so that the guide wheels (11) are far away from the inner sleeve (9);
step 8.3: retightening the guide wheel bolt (12);
step nine: adjusting other five layers of guide wheels
Step 9.1: the height of the inner sleeve (9) is increased by 1 meter, and the inner sleeve (9) enters the third layer of guide wheels;
step 9.2: adjusting the thickness of guide wheel gaskets (13) of the guide wheels at two sides to ensure that the guide wheels just contact the inner sleeve (9); the laser facula starts to move as a basis;
step 9.3: a gasket with the thickness of 1mm is added on each of the two groups of guide wheels, so that the guide wheels (11) are far away from the inner sleeve (9);
step 9.4: retightening the guide wheel bolt (12);
step 9.5: repeating the steps from 9.1 to 9.4, and adjusting the fourth, fifth, sixth and seventh layers of guide wheels in sequence;
step ten: testing inner sleeve operating straightness
Step 10.1: the full-stroke lifting inner sleeve (9) monitors and records the position change of the light spot on the laser receiving plate (6) and confirms that the center deviation of the light spot is not more than 3 mm;
step 10.2: if the inner sleeve (9) is jammed during operation, adding a spacer with the thickness of 0.1mm to each group of guide wheels, and testing again until the requirements are met;
the testing device comprises a fixing device (4), a laser emitting device (5) and a laser receiving plate (6); the upper end of the fixing device (4) is provided with a positioning hole and is fixedly connected with a gripping apparatus of a material loading and unloading machine through a hook claw (2) and a positioning pin (3); the laser emitting device (5) is fixed at the lower part of the fixing device (4); the lower part of the fixing device (4) is provided with a through hole, and laser emitted by the laser emitting device (5) is projected onto a laser receiving plate (6) positioned below the fixing device (4) through the through hole.
2. The accurate detection and adjustment process for the full-stroke running track of the telescopic sleeve of the unloading machine as claimed in claim 1, is characterized in that: the preset precision requirement in the step 4.3 is as follows: the maximum error of the perpendicularity of the outer sleeve (7) cannot exceed 4.8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611003602.8A CN108072336B (en) | 2016-11-15 | 2016-11-15 | Accurate detection and adjustment process for full-stroke running track of telescopic sleeve of material loading and unloading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611003602.8A CN108072336B (en) | 2016-11-15 | 2016-11-15 | Accurate detection and adjustment process for full-stroke running track of telescopic sleeve of material loading and unloading machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108072336A CN108072336A (en) | 2018-05-25 |
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| CN113175920B (en) * | 2021-04-15 | 2022-10-14 | 山东核电有限公司 | Perpendicularity adjusting method for AP1000 reloading machine sleeve |
| CN114964163A (en) * | 2022-04-27 | 2022-08-30 | 中核核电运行管理有限公司 | Device and method for measuring verticality of fixing sleeve of nuclear fuel loading and unloading machine |
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| JP2001153757A (en) * | 1999-11-30 | 2001-06-08 | Hitachi Ltd | Apparatus for measuring gradient of rotational shaft |
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| CN206421827U (en) * | 2016-11-15 | 2017-08-18 | 三门核电有限公司 | A kind of multi-function device debugged available for fuel manipulator crane |
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| CN1068418A (en) * | 1991-07-09 | 1993-01-27 | 北京市建筑工程研究所 | A kind of laser collimation device |
| JP2001153757A (en) * | 1999-11-30 | 2001-06-08 | Hitachi Ltd | Apparatus for measuring gradient of rotational shaft |
| CN101740149A (en) * | 2008-11-20 | 2010-06-16 | 中国核电工程有限公司 | Mechanical self-locking fuel assembly gripping apparatus |
| CN102305604A (en) * | 2011-08-03 | 2012-01-04 | 上海电气核电设备有限公司 | Laser adjustable multipurpose measuring device and measuring method thereof |
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