CN109488643B - Hydraulic cylinder moving and fixing device on inner shell dismounting platform device and use method - Google Patents
Hydraulic cylinder moving and fixing device on inner shell dismounting platform device and use method Download PDFInfo
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- CN109488643B CN109488643B CN201910016837.8A CN201910016837A CN109488643B CN 109488643 B CN109488643 B CN 109488643B CN 201910016837 A CN201910016837 A CN 201910016837A CN 109488643 B CN109488643 B CN 109488643B
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- wedge
- box
- stop
- stop pin
- compressor
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
Abstract
The hydraulic cylinder moving and fixing device comprises a wedge-shaped box capable of sliding on a beam guide rail and a stop frame which spans on the inclined plane of the top of the wedge-shaped box; wedge box connecting lugs which can be connected with the rear connecting lugs of the thrust cylinders are respectively arranged on the outer side surfaces of the front vertical plate and the rear vertical plate of the wedge box; the inner sides of the lower ends of the two side plates of the stop frame are provided with guide shafts which can be abutted against the bottom surface of the upper flange of the beam guide rail when the upper cover plate of the stop frame slides to the upper end of the inclined plane of the top of the wedge-shaped box. The device for dismounting the shell platform in the compressor can save manual operation, lighten the labor intensity of workers, save working hours and reduce the potential safety hazard of production; the wedge box is turned 180 degrees to be connected with the propulsion cylinder, and the disassembly and the installation of the shell in the compressor can be completed by one set of sleeve; the two pushing cylinders of the platform device can be positioned on the two beam guide rails at the same position, so that the situation that the shell in the compressor is pushed and pulled is avoided; the device has simple structure, low cost and reliable performance.
Description
Technical Field
The invention relates to a casing dismounting device in a casing vertical split type multistage high-pressure centrifugal compressor, in particular to a device which is arranged on a casing dismounting platform device in the compressor and can realize automatic fixation and movement of a thrust cylinder of the platform device in the process of pushing and pulling the casing in the compressor and a use method thereof.
Background
In order to solve the problem that the inner shell is difficult to disassemble due to large volume and weight when the shell is maintained in the vertical split type multistage high-pressure centrifugal compressor, the applicant disclosed a compressor inner shell disassembling platform device in the CN205446200U patent, the platform device overcomes the defect of the prior inner shell disassembling device, but has a defect in the operation and use process, namely, a pushing cylinder of the platform device is fixedly positioned by screwing a positioning bolt into a bolt hole formed on a beam guide rail in the process of pushing and pulling an inner shell push plate, the pushing cylinder is manually loosened and screwed out when reaching a stroke end point, the pushing cylinder is manually moved to the next station by hand, and then the positioning bolt is screwed to position the pushing cylinder for next push and pull. The disassembly and the installation of the inner shell are completed in one time, the installation and the disassembly of the bolt and the manual movement of the pushing oil cylinder are required to be repeated for a plurality of times, the operation is very complicated, time and labor are wasted, and potential safety hazards exist.
Disclosure of Invention
In order to overcome the defects of the compressor inner shell dismounting platform device, the invention provides the hydraulic cylinder moving fixing device which can save manual operation and automatically control the fixed positioning and the movement of the thrust cylinder by the acting force of the thrust cylinder in each working stroke.
The invention also provides a using method of the hydraulic cylinder moving and fixing device.
The invention provides a hydraulic cylinder moving and fixing device on an inner shell dismounting platform device, which comprises a steel wedge box and a stop frame, wherein the steel wedge box and the stop frame are arranged on a beam guide rail of the inner shell dismounting platform device;
the transverse width of the wedge box is the same as the width of the beam guide rail, the bottom surface of the wedge box is adhered to the upper surface of the beam guide rail and can slide, the inclination alpha of the inclined surface of the top of the wedge box and the bottom surface of the wedge box is 10-15 degrees, the outer side surface of the front vertical plate of the wedge box is provided with a vertically welded front connecting lug of the wedge box, the outer side surface of the rear vertical plate of the wedge box is provided with a vertically welded rear connecting lug of the wedge box, the front connecting lug of the wedge box and the rear connecting lug of the wedge box can be connected with the rear connecting lug of a hydraulic cylinder welded at the rear end of a propulsion cylinder through a pin shaft B (the front connecting lug of the wedge box is connected with the rear connecting lug of the hydraulic cylinder when the inner shell of the compressor is installed, and the rear connecting lug of the wedge box is connected with the rear connecting lug of the hydraulic cylinder when the inner shell of the compressor is disassembled); the tail end of the rear connecting lug of the wedge-shaped box is higher than the top plane of the rear vertical plate of the wedge-shaped box (namely, the rear connecting lug of the wedge-shaped box is tilted upwards); a pair of stop pin connecting lugs are welded on the outer side surfaces of the rear vertical plate of the wedge-shaped box at the two sides of the rear connecting lug of the wedge-shaped box respectively, a stop pin shaft is fixedly arranged between each pair of stop pin connecting lugs, a stop pin with the upper end capable of freely rotating towards the outer side of the rear vertical plate of the wedge-shaped box by taking the stop pin shaft as the center is sleeved on the stop pin shaft, and strip stop pin holes for the stop pin to enter and exit are respectively arranged at the two sides of the upper flange of the beam guide rail, so that the stop pin can smoothly enter and exit the stop pin holes, and the length of the stop pin holes is ensured
Wherein:
h1: the distance (mm) from the center of the pin hole of the stop pin to the top plane of the rail of the cross member,
h2: the distance (mm) of the end of the stop pin from the top plane of the rail of the cross beam,
d: the shaft diameter (mm) of the stop pin;
the stop rack consists of a stop rack upper cover plate, two stop rack side plates and two stop rack guide shafts; the upper ends of the two stop frame side plates are respectively and vertically welded with the two ends of the stop frame upper cover plate to form a door type structure which transversely spans the inclined plane of the top of the wedge-shaped box and can slide along the inclined plane of the top of the wedge-shaped box; the guide shafts of the stop frames are symmetrically arranged on the inner sides of the lower ends of the side plates of the two stop frames, and the distance between the guide shafts and the upper cover plate of the stop frames is required to enable the guide shafts to be abutted against the bottom surfaces of the upper flanges of the guide rails of the cross beams when the stop frames slide to the upper ends of the inclined planes of the tops of the wedge-shaped boxes.
In order to improve the strength of the wedge box, save steel and reduce the sliding friction force between the stop rack and the top inclined plane of the wedge box, the top inclined plane of the wedge box is formed by the top surfaces of two or more wedge box side vertical plates (namely, the wedge box is of a roof-free structure).
The using method of the hydraulic cylinder moving and fixing device comprises the following steps:
when the compressor inner shell is installed, the front connecting lug of the wedge-shaped box is connected with the rear connecting lug of the hydraulic cylinder through a pin shaft B, the front connecting lug of the hydraulic cylinder is connected with the connecting lug of the cross beam box at the rear part of the cross beam box through a pin shaft A, and the cross beam box is connected with the compressor inner shell through a push plate; then the propulsion cylinder is extended, the propulsion cylinder applies thrust to two ends through a front connecting lug of the hydraulic cylinder and a rear connecting lug of the hydraulic cylinder respectively, along with the gradual extension of the propulsion cylinder, the wedge box moves backwards on the beam guide rail (the resistance of pushing the inner shell of the compressor to move on the inner shell dismounting platform device of the compressor is far greater than the resistance of pushing the wedge box to slide on the beam guide rail), the stop pin is driven to move backwards together (the stop pin does not fall into the stop pin hole at the moment, the lower end of the stop pin can slide on the beam guide rail), meanwhile, the wedge box wedges into the bottom of the stop frame like a wedge and lifts the stop frame, and when the wedge box reaches a preset position, the stop pin automatically slides into the stop pin hole on the beam guide rail, and can not move continuously when the stop pin is propped against the rear wall of the stop pin hole, and the wedge box stops moving; when the wedge box stops moving, the guide shaft of the stop frame is just abutted against the bottom surface of the upper flange of the beam guide rail, the upper cover plate of the stop frame and the guide shaft of the stop frame clamp the wedge box and the beam guide rail, so that the rear part of the wedge box can be prevented from overturning around the stop pin, the thrust of the propulsion cylinder is amplified and converted into friction resistance of the wedge box and the beam guide, so that most of the thrust of the cylinder is born, the stress of the stop pin is relieved, and the stop pin is assisted by the stop frame to jointly complete the fixed positioning of the propulsion cylinder; the pushing oil cylinder continues to extend, and the cross beam box body pushes the inner shell of the compressor to move towards the outer shell of the compressor under the thrust action of the pushing oil cylinder (the friction resistance of the stop pin resistance and the stop frame to the wedge-shaped box is larger than the resistance for pushing the inner shell of the compressor to move on the inner shell dismounting platform device of the compressor); when the pushing oil cylinder reaches the stroke end, the shell in the compressor stops moving, so that the pushing oil cylinder is changed from extension to contraction, the wedge box moves towards the shell in the compressor under the action of the pulling force of the pushing oil cylinder, the stop frame slides down from the upper end of the inclined plane at the top of the wedge box, the guide shaft of the stop frame is not abutted against the upper flange of the guide rail of the cross beam, and the wedge box is separated from the constraint of the stop frame; along with the continuous shrinkage of the thrust cylinder, the wedge-shaped box is dragged by the thrust cylinder to move towards the shell direction in the compressor, the upper end of the stop pin rotates around the stop pin shaft when the stop pin moves to the front wall of the stop pin hole along with the wedge-shaped box, the stop pin is dragged out of the stop pin hole and moves to the next station along with the wedge-shaped box and the stop frame towards the shell direction in the compressor, the thrust cylinder is restored to an initial state after stopping shrinkage, and then the next stroke is started; the reciprocating is performed in a circulating way until the inner shell of the compressor is in place, and the whole installation process of the inner shell of the compressor is finished;
when the shell in the compressor is disassembled, the wedge-shaped box and the stop rack are turned back and forth for 180 degrees, and the rear connecting lug of the wedge-shaped box is connected with the rear connecting lug of the hydraulic cylinder of the thrust cylinder through the pin shaft B; the pushing oil cylinder is extended, the pushing oil cylinder respectively applies pushing force to two ends through the front connecting lug of the hydraulic cylinder and the rear connecting lug of the hydraulic cylinder, along with the gradual extension of the pushing oil cylinder, the wedge box moves on the beam guide rail in the opposite direction of the shell in the compressor (the resistance for pushing the shell in the compressor to move on the shell dismounting platform device in the compressor is far greater than the resistance for pushing the wedge box to slide on the beam guide rail), the wedge box drives the stop pin to move together in the opposite direction of the shell in the compressor (the stop pin does not fall into the stop pin hole at the moment, the lower end of the stop pin can slide on the beam guide rail), and the stop pin automatically slides into the stop pin hole on the beam guide rail when the wedge box reaches a preset position; the pushing oil cylinder is changed from extension to contraction, the wedge box and the stop frame are pulled to move towards the shell direction in the compressor, the stop pin moves along with the wedge box, the stop pin cannot move continuously when propping against the front wall of the stop pin hole, the wedge box also stops moving, meanwhile, the wedge box is wedged into the bottom of the stop frame like a wedge and lifts the stop frame, the stop frame guide shaft just abuts against the bottom surface of the upper flange of the beam guide rail when the wedge box stops moving, the stop frame upper cover plate and the stop frame guide shaft clamp the wedge box and the beam guide rail, so that the wedge box can be prevented from overturning around the stop pin, the pulling force of the pushing oil cylinder is amplified and converted into the friction force of the wedge box and the beam guide to bear the pulling force of most of the pushing oil cylinder, the stress of the stop pin is relieved, and the stop frame is used for assisting the stop pin to jointly finish the fixed positioning of the pushing oil cylinder; the pushing oil cylinder continues to shrink, and the cross beam box body pulls the inner shell of the compressor to leave the outer shell of the compressor under the action of the pulling force of the pushing oil cylinder (the friction resistance of the stop pin resistance and the stop frame to the wedge-shaped box is larger than the resistance of the inner shell of the compressor to move on the inner shell dismounting platform device of the compressor); when the pushing oil cylinder reaches the stroke end, the shell in the compressor stops moving; the pushing oil cylinder is changed from compression to extension, the wedge box moves away from the inner shell of the compressor under the pushing force of the pushing oil cylinder, the stop frame slides down from the upper end of the inclined plane at the top of the wedge box, the guide shaft of the stop frame is not abutted against the upper flange of the beam guide rail, and the wedge box is separated from the constraint of the stop frame; along with the continuous extension of the pushing oil cylinder, the wedge-shaped box is pushed by the pushing oil cylinder to move in the direction away from the shell in the compressor, and when the stop pin moves to the rear wall of the stop pin hole along with the wedge-shaped box, the upper end of the stop pin rotates around the stop pin shaft, and the stop pin is dragged out of the stop pin hole; the hydraulic cylinder is moved to the next station along with the wedge box and the stop rack in a wedge shape, the initial state is restored after the extension of the hydraulic cylinder is stopped, and then the next stroke is started; and (3) repeating the cycle until the inner shell of the compressor is separated from the outer shell of the compressor, and ending the whole process of disassembling the inner shell of the compressor.
The invention has the beneficial effects that:
1. the device replaces the original manual positioning and moving method of the propelling oil cylinder on the compressor inner shell dismounting platform device disclosed by the CN205446200U patent, can save manual operation, greatly lighten the labor intensity of operators, save working hours and reduce the potential safety hazard of production.
2. The invention is characterized in that the stop pin on the wedge box is matched with the stop frame which can slide on the inclined plane of the top of the wedge box, the thrust cylinder is fixedly positioned and moved in each stroke, the inclined wedge structure has the functions of changing the clamping direction and increasing the force (namely, a smaller horizontal clamping force is additionally applied, but a vertical pressure which is several times larger than the horizontal clamping force is obtained), the wedge box and the beam guide rail are clamped by the stop frame, the thrust (when the inner shell of the compressor is installed) or the tension (when the inner shell of the compressor is dismounted) of the thrust cylinder is amplified and converted into the friction force between the wedge box and the beam guide rail, most of the cylinder acting force is born, the stress of the stop pin is lightened, the stop pin and the beam guide rail are not damaged due to overlarge stress, the size of the whole clamping mechanism is reduced, and the performance is ensured to be more reliable.
3. The positioning of the stop pin and the stop pin hole can ensure that the positioning positions of the two pushing cylinders of the compressor inner shell dismounting platform device on the two beam guide rails are kept consistent, and the situation that the stress on the two sides of the inner shell is inconsistent due to the fact that the positions of the pushing cylinders on the two beam guide rails on the two sides are different when the push plate pushes and pulls the compressor inner shell is avoided.
4. The lower clamping piece of the stop frame adopts a rotatable shaft piece, the lower surface of the upper flange of the beam guide rail is in line contact during clamping, the bottom surface of the upper cover plate and the inclined surface of the top of the wedge-shaped box can be completely attached under any condition during clamping of the stop frame, and the influence of the inclination of the inclined surface of the top of the wedge-shaped box and the inclination angle of the stop frame is avoided, so that high machining precision is not required (if the lower clamping piece of the stop frame is in conventional surface contact with the lower surface of the upper flange of the beam guide rail, the bottom surface of the upper cover plate of the stop frame and the inclined surface of the top of the wedge-shaped box and the lower clamping piece of the stop frame and the upper flange of the beam guide rail are difficult to achieve at the same time, high machining precision is required, and the high precision is difficult to achieve for the beam guide rail of tens of meters or more).
5. The device can realize the disassembly and the installation of the shell in the compressor by one set of devices by turning the wedge-shaped box 180 degrees to be connected with the thrust cylinder, and does not need to replace different devices, thereby being beneficial to saving maintenance equipment parts and reducing the manufacturing cost of the equipment; meanwhile, the phenomenon that the fixing device is easy to lose when the fixing device is stored independently when the platform device is not used due to the fact that one platform device is matched with a plurality of sets of fixing devices can be avoided.
6. The rear connecting lug of the wedge-shaped box is tilted upwards, and the pushing oil cylinder is blocked by the rear connecting lug after each stroke is finished, so that the stop frame can move along with the wedge-shaped box, and the double functions of connecting with the connecting lug of the pushing oil cylinder and dragging the stop frame are achieved.
7. The length of the stop pin hole is designed according to the defined calculation formula, so that the stop pin can freely enter and exit in the stop pin hole, and the phenomenon that the stop pin cannot normally enter and exit from the stop pin hole and further the service performance of the stop pin is affected due to interference between the stop pin and the stop pin hole is avoided.
8. Compared with other propulsion cylinder fixing and moving devices manufactured by adopting hydraulic technology or electromagnet technology, the hydraulic cylinder moving fixing device has the advantages of simple structure, low cost, reliable performance and high cost performance.
Drawings
The accompanying drawings are schematic illustrations of embodiments of the present invention.
FIG. 1 is a schematic view of the structure of this embodiment (the state when the thrust cylinder is extended when the inner shell of the compressor is installed);
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a front view of the wedge box of FIG. 1;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a transverse view of the stopper bracket of FIG. 1;
FIG. 6 is a schematic view of the assembly of the stop frame, wedge box and cross rail;
fig. 7 is a schematic view showing a state in which the thrust cylinder is contracted when the embodiment is used for detaching the inner shell of the compressor.
FIG. 8 is a schematic illustration of the thrust cylinder retracting after one stroke of the thrust cylinder is completed when the compressor inner shell is installed, and the wedge box is pulled to walk in the rightward movement process by the cylinder retracting.
The symbols in the drawings illustrate: 1-wedge box, 101-wedge box bottom plate, 102-wedge box side vertical plate, 103-wedge box rear vertical plate, 104-wedge box front vertical plate, 105-wedge box front connecting lug, 106-wedge box rear connecting lug, 107-stop pin connecting lug, 108-stop pin shaft, 2-stop frame, 201-stop frame upper cover plate, 202-stop frame side plate, 203-stop frame guide shaft, 3-pin shaft B, 4-hydraulic cylinder rear connecting lug, 5-pushing oil cylinder, 6-hydraulic cylinder front connecting lug, 7-pin shaft A, 8-beam box connecting lug, 9-beam box, 10-beam guide rail, 11, stop pin hole 12 and stop pin.
Detailed Description
The invention is further described below with reference to the drawings and examples.
Referring to fig. 1 to 6, the hydraulic cylinder moving and fixing device of the present embodiment is composed of a wedge box 1 made of Q235 steel and a stopper frame 2 disposed on a beam rail 10 of a compressor inner casing dismounting platform device.
Referring to fig. 1 to 4, the wedge box 1 is composed of a wedge box bottom plate 101, three wedge box side vertical plates 102, a wedge box front vertical plate 104 and a wedge box rear vertical plate 103; the wedge-shaped box is of a roof-free structure, and the top inclined plane of the wedge-shaped box is formed by the top surfaces of the three side vertical plates; the width of the wedge-shaped box bottom plate is the same as the width of the upper surface of the beam guide rail, is attached to the upper surface of the beam guide rail, and can slide on the upper surface of the beam guide rail; the wedge box side vertical plates, the wedge box front vertical plates and the wedge box rear vertical plates are respectively and vertically welded with the wedge box bottom plate, the three wedge box side vertical plates are uniformly distributed at intervals, and the front end and the rear end of the wedge box side vertical plates are respectively and vertically welded with the wedge box front vertical plates and the wedge box rear vertical plates; the front end of the wedge box side vertical plate is as high as the front vertical plate of the wedge box, the rear end of the wedge box side vertical plate is as high as the rear vertical plate of the wedge box, and the angle alpha between the top inclined plane of the wedge box side vertical plate and the wedge box bottom plate is 10 degrees; the outer side surface of the front vertical plate of the wedge box is provided with a front wedge box connecting lug 105 which is vertically welded, the outer side surface of the rear vertical plate of the wedge box is provided with a rear wedge box connecting lug 106 which is vertically welded, and the front wedge box connecting lug 105 and the rear wedge box connecting lug 106 can be connected with a rear hydraulic cylinder connecting lug 4 of the propulsion cylinder 5 through a pin shaft B3 (the front wedge box connecting lug is connected with the rear hydraulic cylinder connecting lug when the inner shell of the compressor is installed, and the rear wedge box connecting lug is connected with the rear hydraulic cylinder connecting lug when the inner shell of the compressor is disassembled); the tail end of the rear connecting lug of the wedge-shaped box is higher than the top plane of the rear vertical plate of the wedge-shaped box, namely the rear connecting lug of the wedge-shaped box is tilted upwards; a pair of stop pin connecting lugs 107 are welded on the outer side surfaces of the rear vertical plate of the wedge-shaped box on the two sides of the rear connecting lug 106 of the wedge-shaped box respectively, a stop pin shaft 108 is fixedly arranged between each pair of stop pin connecting lugs, a stop pin 12 with the upper end capable of freely rotating towards the outer side of the rear vertical plate of the wedge-shaped box by taking the stop pin shaft as the center is sleeved on the stop pin shaft, and strip-shaped stop pin holes 11 for the stop pin to enter and exit are respectively arranged on the two sides of the upper flange of the beam guide rail 10; the axial diameter d of the stop pin of this embodiment isThe distance h2 from the tail end of the stop pin to the top plane of the beam guide rail is 35mm, the distance h1 from the center of the pin hole of the stop pin to the top plane of the beam guide rail is 30mm, and the length of the pin hole of the stop pin is determinedThe length of the stop pin hole is 80mm.
Referring to fig. 5, 6, 1 and 2, the stopper frame 2 is composed of a stopper frame upper cover 201, two stopper frame side plates 202 and a stopper frame guide shaft 203; the transverse width of the two side plates of the stop frame is the same as the length of the upper cover plate of the stop frame, the upper ends of the two side plates of the stop frame are respectively and vertically welded with the two sides of the width direction of the upper cover plate of the stop frame, so that a door structure which transversely spans on the top inclined plane of the side vertical plate of the wedge-shaped box and can slide along the top inclined plane of the side vertical plate of the wedge-shaped box is formed; the two stop frame guide shafts are symmetrically arranged on the inner sides of the lower ends of the two stop frame side plates, and the distance between the two stop frame guide shafts and the bottom surface of the stop frame upper cover plate is required to ensure that the stop frame guide shafts can be closely attached to the bottom surface of the upper flange of the beam guide rail when the stop frame upper cover plate slides to the upper end of the top inclined plane of the wedge-shaped box side vertical plate.
The use method of the hydraulic cylinder moving and fixing device in the embodiment is as follows:
referring to fig. 1 and 8, when the compressor inner shell is installed, the front connecting lug of the wedge-shaped box is connected with the rear connecting lug of the hydraulic cylinder at the rear end of the thrust cylinder through a pin shaft B, the front connecting lug 6 of the hydraulic cylinder at the front end of the thrust cylinder is connected with the beam box connecting lug 8 of the beam box 9 of the compressor inner shell dismounting platform device through a pin shaft A7, and the beam box is connected with the compressor inner shell (not shown) through a push plate (not shown); then the propulsion oil cylinder is extended, and when the propulsion oil cylinder starts to extend, the wedge box and the stop frame are in a state that the stop frame floats on the wedge box and the wedge box can slide on the beam guide rail at will; the pushing oil cylinder applies pushing force to two ends through the front connecting lug of the hydraulic cylinder and the rear connecting lug of the hydraulic cylinder respectively, along with the gradual extension of the pushing oil cylinder, the wedge box moves backwards on the beam guide rail (the resistance of pushing the inner shell of the compressor to move on the shell dismounting platform device of the compressor is far greater than the resistance of pushing the wedge box to slide on the beam guide rail), the stop pin is driven to move backwards together (the stop pin does not fall into the stop pin hole at the moment and can slide on the beam guide rail at the lower end), meanwhile, the wedge box is wedged into the bottom of the stop frame like a wedge and lifts the stop frame, the stop pin automatically slides into the stop pin hole on the beam guide rail when the wedge box reaches a preset position, the stop pin is propped against the rear wall of the stop pin hole and cannot move continuously, and the wedge box stops moving; when the wedge box stops moving, the stop frame guide shaft just abuts against the bottom surface of the upper flange of the beam guide rail, the stop frame upper cover plate and the stop frame guide shaft clamp the wedge box and the beam guide rail, so that the rear part of the wedge box can be prevented from overturning around the stop pin, the thrust of the propulsion cylinder is amplified and converted into friction resistance of the wedge box and the beam guide, most of the thrust of the propulsion cylinder is born, the stress of the stop pin is reduced, and the stop frame assists the stop pin to jointly complete the fixed positioning of the propulsion cylinder; the pushing oil cylinder continues to extend, at the moment, the resistance of the stop pin and the friction resistance of the stop frame to the wedge-shaped box are larger than the resistance for pushing the inner shell of the compressor to move on the inner shell dismounting platform device of the compressor, and the cross beam box body pushes the inner shell of the compressor to move towards the outer shell of the compressor under the thrust action of the pushing oil cylinder; when the pushing oil cylinder reaches the stroke end, the shell in the compressor stops moving, so that the pushing oil cylinder is changed from extension to contraction, the wedge box moves towards the shell in the compressor under the action of the pulling force of the pushing oil cylinder, the stop frame slides down from the upper end of the inclined plane at the top of the wedge box, the guide shaft of the stop frame is not abutted against the upper flange of the guide rail of the cross beam, and the wedge box is separated from the constraint of the stop frame; the wedge box is dragged to move towards the shell direction in the compressor by the thrust oil cylinder along with the continued shrinkage of the thrust oil cylinder, the upper end of the stop pin rotates around the stop pin shaft when the stop pin moves to the front wall of the stop pin hole along with the wedge box, the stop pin is dragged out of the stop pin hole and moves towards the shell direction in the compressor along with the wedge box and the stop frame to the next station, and the thrust oil cylinder is restored to the initial state after stopping shrinkage and starts the next stroke; and (3) circulating the process until the inner shell of the compressor is in place, and finishing the installation process of the inner shell of the compressor.
Referring to fig. 7, when the inner shell of the compressor is disassembled, only the wedge-shaped box and the stop rack are required to be turned back and forth for 180 degrees, and the rear connecting lug of the wedge-shaped box is connected with the rear connecting lug of the hydraulic cylinder of the thrust cylinder through the pin shaft B; the pushing oil cylinder stretches, the pushing oil cylinder applies pushing force to two ends through the front connecting lug of the hydraulic cylinder and the rear connecting lug of the hydraulic cylinder respectively, along with the gradual stretching of the pushing oil cylinder, the wedge-shaped box moves in the opposite direction of the inner shell on the beam guide rail under the pushing force of the pushing oil cylinder (the resistance of pushing the inner shell of the compressor to move on the disassembling platform device of the inner shell of the compressor is far greater than the resistance of pushing the wedge-shaped box to slide on the beam guide rail), the wedge-shaped box drives the stop pin to move in the opposite direction of the inner shell together (the stop pin does not fall into the stop pin hole at the moment, the lower end of the stop pin can slide on the beam guide rail), and the stop pin automatically slides into the stop pin hole on the beam guide rail when the wedge-shaped box reaches a preset position; the pushing oil cylinder is changed from extension to contraction, the wedge box and the stop frame are pulled to move towards the shell direction in the compressor, the stop pin moves along with the wedge box, the stop pin can not move when propping against the front wall of the stop pin hole, the wedge box also stops moving, meanwhile, the wedge box is wedged into the bottom of the stop frame like a wedge and lifts the stop frame, the stop frame guide shaft just abuts against the bottom surface of the upper flange of the beam guide rail when the wedge box stops moving, the stop frame upper cover plate and the stop frame guide shaft clamp the wedge box and the beam guide rail, so that the wedge box can be prevented from overturning around the stop pin, the pulling force of the pushing oil cylinder is amplified and converted into the friction force of the wedge box and the beam guide, the pulling force of most of the pushing oil cylinder is born, the stress of the stop pin is relieved, and the stop frame is used for assisting the stop pin to jointly complete the fixed positioning of the pushing oil cylinder; the pushing oil cylinder continues to shrink, and the resistance of the stop pin and the friction resistance of the stop frame to the wedge-shaped box are larger than the resistance of the inner shell of the compressor moving on the inner shell dismounting platform device of the compressor, and the cross beam box body pulls the inner shell of the compressor to leave the outer shell of the compressor under the action of the pulling force of the pushing oil cylinder; when the pushing oil cylinder reaches the stroke end, the shell in the compressor stops moving, so that the pushing oil cylinder is changed from contraction to extension, the wedge box moves away from the shell in the compressor under the pushing force of the pushing oil cylinder, the stop frame slides down from the upper end of the inclined plane at the top of the wedge box, the guide shaft of the stop frame is not abutted against the upper flange of the guide rail of the cross beam any more, and the wedge box is separated from the constraint of the stop frame; along with the continuous extension of the pushing oil cylinder, the wedge box is pushed by the pushing oil cylinder to move in the direction away from the shell in the compressor, the upper end of the stop pin rotates around the stop pin shaft when the stop pin moves to the rear wall of the stop pin hole along with the wedge box, the stop pin is dragged out of the stop pin hole and moves to the next station along with the wedge box and the stop frame, the pushing oil cylinder is restored to the initial state after the extension is stopped, and then the next stroke is started; and (3) repeating the cycle until the inner shell of the compressor is separated from the outer shell of the compressor, and ending the whole process of disassembling the inner shell of the compressor.
Claims (3)
1. The hydraulic cylinder moving and fixing device on the inner shell dismounting platform device is characterized by comprising a steel wedge box (1) and a stop frame (2) which are arranged on a beam guide rail (10) of the inner shell dismounting platform device;
the transverse width of the wedge box is the same as the width of the beam guide rail, the bottom surface of the wedge box is adhered to the upper surface of the beam guide rail and can slide, the inclination alpha of the inclined surface of the top of the wedge box and the bottom surface of the wedge box is 10-15 degrees, the outer side surface of a front vertical plate (104) of the wedge box is provided with a front wedge box connecting lug (105) which is vertically welded, the outer side surface of a rear vertical plate (103) of the wedge box is provided with a rear wedge box connecting lug (106) which is vertically welded, and the front wedge box connecting lug and the rear wedge box connecting lug can be connected with a rear hydraulic cylinder connecting lug (4) which is welded at the rear end of a propulsion oil cylinder (5) through a pin shaft B (3); the tail end of the rear connecting lug of the wedge-shaped box is higher than the top plane of the rear vertical plate of the wedge-shaped box; a pair of stop pin connecting lugs (107) are welded on the outer side surfaces of the rear vertical plate of the wedge-shaped box at the two sides of the rear connecting lug of the wedge-shaped box respectively, a stop pin shaft (108) is fixedly arranged between each pair of stop pin connecting lugs, a stop pin (12) with the upper end capable of freely rotating towards the outer side of the rear vertical plate of the wedge-shaped box by taking the stop pin shaft as the center is sleeved on the stop pin shaft, two sides of the upper flange of the beam guide rail are respectively provided with a strip stop pin hole (11) for the stop pin to enter and exit, and the length of the stop pin holeWherein:
h1: the distance from the center of the pin hole of the stop pin to the top plane of the rail of the cross beam,
h2: the distance from the end of the stop pin to the top plane of the rail of the cross beam,
d: the shaft diameter of the stop pin;
the stop rack (2) consists of a stop rack upper cover plate (201), two stop rack side plates (202) and two stop rack guide shafts (203); the upper ends of the two stop frame side plates are respectively and vertically welded with the two ends of the stop frame upper cover plate to form a door type structure which transversely spans the inclined plane of the top of the wedge-shaped box and can slide along the inclined plane of the top of the wedge-shaped box; the guide shafts of the stop frames are symmetrically arranged on the inner sides of the lower ends of the side plates of the two stop frames, and the distance between the guide shafts and the upper cover plate of the stop frames is required to enable the guide shafts to be abutted against the bottom surfaces of the upper flanges of the guide rails of the cross beams when the stop frames slide to the upper ends of the inclined planes of the tops of the wedge-shaped boxes.
2. The hydraulic cylinder moving and fixing device on the inner casing assembling and disassembling platform device according to claim 1, wherein the top inclined plane of the wedge box is formed by the top surfaces of two or more wedge box side vertical plates (102).
3. The method of using the hydraulic cylinder moving and fixing device on the inner shell dismounting platform device as claimed in claim 1, which is characterized by comprising the following steps:
when the compressor inner shell is installed, the front connecting lug of the wedge-shaped box is connected with the rear connecting lug of the hydraulic cylinder through a pin shaft B, the front connecting lug of the hydraulic cylinder is connected with the beam box connecting lug (8) at the rear part of the beam box (9) through a pin shaft A, and the beam box is connected with the compressor inner shell through a push plate; then the propulsion cylinder is extended, the propulsion cylinder respectively applies thrust to two ends through a front connecting lug of the hydraulic cylinder and a rear connecting lug of the hydraulic cylinder, along with the gradual extension of the propulsion cylinder, the wedge box moves backwards on the beam guide rail under the push of the propulsion cylinder and drives the stop pin to move backwards together, meanwhile, the wedge box wedges the bottom of the stop frame like a wedge and lifts the stop frame, when the wedge box reaches a preset position, the stop pin automatically slides into a stop pin hole on the beam guide rail, the stop pin cannot move continuously when propping against the rear wall of the stop pin hole, and the wedge box also stops moving; when the wedge box stops moving, the guide shaft of the stop frame is just abutted against the bottom surface of the upper flange of the beam guide rail, the upper cover plate of the stop frame and the guide shaft of the stop frame clamp the wedge box and the beam guide rail, so that the rear part of the wedge box can be prevented from overturning around the stop pin, the thrust of the propulsion cylinder is amplified and converted into friction resistance of the wedge box and the beam guide, so that most of the thrust of the cylinder is born, the stress of the stop pin is relieved, and the stop pin is assisted by the stop frame to jointly complete the fixed positioning of the propulsion cylinder; the propulsion cylinder continues to extend, and the cross beam box body pushes the inner shell of the compressor to move towards the outer shell of the compressor under the thrust action of the propulsion cylinder; when the pushing oil cylinder reaches the stroke end, the shell in the compressor stops moving, so that the pushing oil cylinder is changed from extension to contraction, the wedge box moves towards the shell in the compressor under the action of the pulling force of the pushing oil cylinder, the stop frame slides down from the upper end of the inclined plane at the top of the wedge box, the guide shaft of the stop frame is not abutted against the upper flange of the guide rail of the cross beam, and the wedge box is separated from the constraint of the stop frame; along with the continuous shrinkage of the thrust cylinder, the wedge-shaped box is dragged by the thrust cylinder to move towards the shell direction in the compressor, the upper end of the stop pin rotates around the stop pin shaft when the stop pin moves to the front wall of the stop pin hole along with the wedge-shaped box, the stop pin is dragged out of the stop pin hole and moves to the next station along with the wedge-shaped box and the stop frame towards the shell direction in the compressor, the thrust cylinder is restored to an initial state after stopping shrinkage, and then the next stroke is started; the reciprocating is performed in a circulating way until the inner shell of the compressor is in place, and the whole installation process of the inner shell of the compressor is finished;
when the shell in the compressor is disassembled, the wedge-shaped box and the stop rack are turned back and forth for 180 degrees, and the rear connecting lug of the wedge-shaped box is connected with the rear connecting lug of the hydraulic cylinder of the thrust cylinder through the pin shaft B; the pushing oil cylinder is extended, pushing force is respectively applied to two ends of the pushing oil cylinder through the front connecting lug of the hydraulic cylinder and the rear connecting lug of the hydraulic cylinder, along with gradual extension of the pushing oil cylinder, the wedge box moves on the beam guide rail in the opposite direction of the shell in the compressor under the pushing force of the pushing oil cylinder, the wedge box drives the stop pin to move in the opposite direction of the shell in the compressor together, and when the wedge box reaches a preset position, the stop pin automatically slides into the stop pin hole on the beam guide rail; the pushing oil cylinder is changed from extension to contraction, the wedge box and the stop frame are pulled to move towards the shell direction in the compressor, the stop pin moves along with the wedge box, the stop pin cannot move continuously when propping against the front wall of the stop pin hole, the wedge box also stops moving, meanwhile, the wedge box is wedged into the bottom of the stop frame like a wedge and lifts the stop frame, the stop frame guide shaft just abuts against the bottom surface of the upper flange of the beam guide rail when the wedge box stops moving, the stop frame upper cover plate and the stop frame guide shaft clamp the wedge box and the beam guide rail, so that the wedge box can be prevented from overturning around the stop pin, the pulling force of the pushing oil cylinder is amplified and converted into the friction force of the wedge box and the beam guide to bear the pulling force of most of the pushing oil cylinder, the stress of the stop pin is relieved, and the stop frame is used for assisting the stop pin to jointly finish the fixed positioning of the pushing oil cylinder; the pushing oil cylinder continues to shrink, and the cross beam box body pulls the inner shell of the compressor to leave the outer shell of the compressor under the pulling force of the pushing oil cylinder; when the pushing oil cylinder reaches the stroke end, the shell in the compressor stops moving; the pushing oil cylinder is changed from compression to extension, the wedge box moves away from the inner shell of the compressor under the pushing force of the pushing oil cylinder, the stop frame slides down from the upper end of the inclined plane at the top of the wedge box, the guide shaft of the stop frame is not abutted against the upper flange of the beam guide rail, and the wedge box is separated from the constraint of the stop frame; along with the continuous extension of the pushing oil cylinder, the wedge-shaped box is pushed by the pushing oil cylinder to move in the direction away from the shell in the compressor, and when the stop pin moves to the rear wall of the stop pin hole along with the wedge-shaped box, the upper end of the stop pin rotates around the stop pin shaft, and the stop pin is dragged out of the stop pin hole; the hydraulic cylinder is moved to the next station along with the wedge box and the stop rack in a wedge shape, the initial state is restored after the extension of the hydraulic cylinder is stopped, and then the next stroke is started; and (3) repeating the cycle until the inner shell of the compressor is separated from the outer shell of the compressor, and ending the whole process of disassembling the inner shell of the compressor.
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| CN201910016837.8A CN109488643B (en) | 2019-01-08 | 2019-01-08 | Hydraulic cylinder moving and fixing device on inner shell dismounting platform device and use method |
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| CN201910016837.8A CN109488643B (en) | 2019-01-08 | 2019-01-08 | Hydraulic cylinder moving and fixing device on inner shell dismounting platform device and use method |
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