Method for dismounting pressure maintaining disc spring of butt joint sealing frame of ship lift

Abstract

The application discloses a method for dismounting and mounting a pressure-keeping disc spring of a docking sealing frame of a ship lift, and belongs to the technical field of ship lift maintenance. The method comprises the following steps: S1, pushing out the docking sealing frame; S2, pressing the pressure-keeping disc spring assembly; S3, bearing the dismounting device; S4, releasing the pressure of the disc spring group; S5, dismounting the disc spring group; S6, mounting the disc spring group; S7, resetting the disc spring assembly; and S8, resetting the docking sealing frame. The method can adapt to the maintenance operation of a narrow site, guarantee the complete release of the disc spring force, ensure the construction safety, and improve the maintenance efficiency.

Description

TECHNICAL FIELD

[0001] The application relates to a pressure-keeping disc spring, in particular to a method for disassembling and assembling a pressure-keeping disc spring of a docking sealing frame of a ship lift. BACKGROUND

[0002] The ship lift is a device for enabling a ship to quickly pass through a dam, and has a complex structure, many operation mechanisms and a compact arrangement, and has limited space for maintenance and repair. The docking sealing frame at the head of a ship cabin of the ship lift is an important device for docking the ship cabin with upper and lower gate doors, and enables the ship cabin to be connected with upstream and downstream waterways, and guarantees the normal entry and exit of the ship cabin. The pressure-keeping disc spring acts on the docking sealing frame, and enables the docking sealing frame to have a good sealing effect. In fact, the pressure-keeping disc spring needs to bear back-and-forth impact force during work, and the disc spring will be damaged. When the disc spring is damaged, the sealing effect of the docking sealing frame is directly affected, and there is a major safety hazard of water leakage. When the disc spring is damaged or reaches the service life, the disc spring needs to be replaced in time. Due to the limitation of a narrow space (length (1800mm) x width (900mm) x height (1700mm)), and the lack of a complete disassembling and assembling process and a special tool, the hoisting, disassembling and construction scheme and tool of the disc spring during the replacement and repair process are all temporarily formulated on site during the maintenance process, which greatly increases the difficulty of maintenance, affects the maintenance efficiency and increases the safety risk. In the operation process, there is a major safety risk caused by incomplete release of the elastic force of the disc spring. SUMMARY

[0003] The technical problem to be solved by the application is to provide a method for disassembling and assembling a pressure-keeping disc spring of a docking sealing frame of a ship lift. The pressure-keeping disc spring device can guarantee the safe and stable operation of the docking sealing frame, the disassembling and assembling device and method can adapt to the maintenance operation in a narrow space on site, guarantee the complete release of the elastic force of the disc spring, ensure the construction safety and improve the maintenance efficiency.

[0004] To solve the above technical problem, the technical scheme adopted by the application is as follows:

[0005] A method for disassembling and assembling a pressure-keeping disc spring of a docking sealing frame of a ship lift comprises the following steps.

[0006] S1: pushing out the docking sealing frame: the ship cabin of the ship lift is stopped at the lowest position, the docking sealing frame is staggered with the water stop steel plate surface of the gate door, the drive cylinders in the side pressure-keeping disc spring assembly and the bottom pressure-keeping disc spring assembly are synchronously extended, the whole docking sealing frame is pushed out, and the pushing out is stopped when the relative displacement of the whole docking sealing frame is h. When the displacement is h, the distance between the end surface of the supporting rod and the center hole end surface of the side support or the bottom support is greater than the thickness of the thrust bearing after the single drive cylinder is retracted in place, so that the disc spring can be disassembled and assembled.

[0007] S2: The pressure disc spring assembly is pressed: operate a single drive cylinder to extend and compress the pressure disc spring, while the other drive cylinders remain inactive to prevent relative displacement of the docking sealing frame. When the gap between the baffle and the liner end face is generated, the drive cylinder stops moving, and the stud, nut, and baffle are in a state of no load;

[0008] S3: The device is carried: for the operation of the lower disc spring group in the bottom pressure disc spring assembly and a pair of side pressure disc spring assemblies, drive the elevator to make the wheel frame slide upward along the guide rail, and stop when the support wheel contacts the disc spring to make the support wheel carry the weight of the disc spring assembly;

[0009] For the operation of the upper disc spring group in the side pressure disc spring assembly, the auxiliary wheel frame and the auxiliary support wheel need to be reassembled. The elevator drives the wheel frame to slide upward, and stops when the auxiliary support wheel contacts the disc spring to rotate the hand wheel, so that the auxiliary support wheel carries the weight of the disc spring assembly;

[0010] S4: Disc spring group pressure release: sequentially remove the nut, baffle, and stud, and operate a single drive cylinder with small stroke back retraction in multiple steps, while the vibration motor works to drive the box to move back and forth along the guide rod axis relative to the bottom beam. The first and second support wheel groups on the box vibrate synchronously, the pressure of the pressure disc spring is evenly and slowly released, the drive cylinder is retracted to the position, the vibration motor stops working, at this time the disc spring has recovered the free height, the disc spring force has been completely released, and the drive cylinder retraction process, the support wheel or auxiliary support wheel rotates with the disc spring to reduce the friction and avoid the disc spring from being blocked;

[0011] S5: Disc spring group removal: first rotate the hand wheel in the second support wheel group to make the support wheel or auxiliary support wheel in the second support wheel group contact the disc spring, then sequentially remove the thrust bearing, T-shaped boss, and disc spring between the first support wheel group and the side support or bottom support. Second, rotate the hand wheel in the second support wheel group to make the support wheel or auxiliary support wheel contact and carry the weight of the support rod. Third, rotate the hand wheel in the first support wheel group to make the support wheel or auxiliary support wheel contact the disc spring, move the remaining disc spring to the second support wheel group, and then alternately operate the first support wheel group and the support wheel b to lift until all the remaining disc springs are removed;

[0012] S6: Disc spring group reassembly: first clean the rust on the support rod, evenly apply lubricating grease on the cylindrical surface of the support rod, rotate the hand wheel in the first support wheel group to make the support wheel or auxiliary support wheel contact and carry the weight of the support rod, and the second support wheel group is in the initial position. Second, install part of the new disc spring on the support rod in a matching manner, and then alternately operate the first support wheel group and the support wheel b to lift to gradually install all the new disc springs on the support rod. Finally, complete the reinstallation of the T-shaped boss and the thrust bearing;

[0013] S7: Disc spring assembly reset. First, operate the hand wheels in the first support wheel group and support wheel group b to make the support wheels or auxiliary support wheels bear the weight of the disc spring assembly, second, operate the single drive cylinder to extend and pass through the center hole of the bush until the drive cylinder stroke is consistent with the S2 step, and stop, the hand wheels in the first support wheel group and support wheel group b can be fine-tuned during the extension of the drive cylinder to make the support rods coaxial with the center hole of the bush, and finally, the studs, baffles and nuts are installed in turn, and the single drive cylinder is retracted to the stroke consistent with the other drive cylinders and then stopped.

[0014] S8: Reset the docking sealing frame. Synchronously retract the drive cylinders in the side pressure-keeping disc spring assembly and the bottom pressure-keeping disc spring assembly to make the docking sealing frame retract as a whole, and stop when the relative displacement of the docking sealing frame retracting as a whole is h.

[0015] The present application has the following technical effects:

[0016] 1) By arranging the pressure-keeping disc spring, the pressure-keeping disc spring device can ensure that the water stop is always in a compressed state during the operation of the docking sealing frame, ensure the sealing effect of the water stop, and enable the docking sealing frame to operate safely and stably. Originally, there was no pressure-keeping disc spring, only a pressure-keeping oil cylinder, and when the docking sealing frame was in the docking state, it needed to withstand the back-and-forth impact force under the impact of the water flow. The pressure-keeping oil cylinder could not effectively buffer and release the impact force, was easy to be damaged, and could not guarantee the sealing effect of the water stop. The pressure-keeping disc spring can convert the back-and-forth impact force of the water flow into the elastic force of the disc spring and then release it, effectively buffers, and guarantees the sealing effect of the water stop.

[0017] 2) The dismounting device can adapt to the maintenance operation in a narrow site. The dismounting device cooperates with the pressure-keeping disc spring to ensure that the disc spring force is completely released, ensure construction safety, and improve maintenance efficiency.

[0018] 3) The dismounting device rolls in contact with the disc spring group through the support wheels or auxiliary support wheels, and works through the vibration motor to ensure that the disc spring force is released uniformly and slowly, and improve safety and reliability.

[0019] 4) By arranging the first support wheel group and the second support wheel group, the two groups of support wheel groups move up and down through independent elevators, so that the pressure-keeping disc spring assembly can be supported at all times during the dismounting or mounting of the disc spring. The weight of the disc spring assembly is about 220KG, the drive cylinder in the disc spring assembly can swing along the axis of the bearing seat, the first and second support wheel groups support the disc spring group and the support rod to prevent the disc spring from swinging back and forth due to its own gravity or the release of the disc spring force during dismounting or mounting, and also ensure that the support rod is concentric with the installation hole of the side support or the bottom support. BRIEF DESCRIPTION OF DRAWINGS

[0020] The present application will be further described below in conjunction with the drawings and examples:

[0021] Figure 1 is the front view of the device of the present invention.

[0022] Figure 2 is the left view of the device of the present invention.

[0023] Figure 3 is the top view of the device of the present invention.

[0024] Figure 4 is the structural schematic diagram of the device of the present invention.

[0025] Figure 5 is the arrangement diagram of the bottom pressure-keeping disc spring assembly in the present invention.

[0026] Figure 6 is the Figure 5 partial enlarged view at I in the present invention.

[0027] Figure 7 is the arrangement diagram of the side pressure-keeping disc spring assembly in the present invention.

[0028] Figure 8 is the partial structural schematic diagram of the device of the present invention.

[0029] Figure 9 is the partial structural schematic diagram of the device of the present invention.

[0030] Figure 10 is the structural schematic diagram of the dismounting device in the present invention.

[0031] Figure 11 is the front view (the first kind) of the dismounting device in the present invention.

[0032] Figure 12 is the top view of the dismounting device in the present invention.

[0033] Figure 13 is the front view (the second kind) of the dismounting device in the present invention.

[0034] Figure 14 is the left view (the second kind) of the dismounting device in the present invention.

[0035] Figure 15 is the top view (the second kind) of the dismounting device in the present invention.

[0036] Figure 16 is the structural schematic diagram of the support wheel group in the present invention.

[0037] Figure 17 is the front view of the support wheel group in the present invention.

[0038] Figure 18 is the Figure 17 partial enlarged view at II in the present invention.

[0039] Figure 19 is the left view of the support wheel group in the present application.

[0040] Figure 20 is the schematic diagram of steps S1-S2 (initial state) in the present application.

[0041] Figure 21 is the schematic diagram of steps S1-S2 (pushing out and applying pressure) in the present application.

[0042] Figure 22 is the schematic diagram of step S3 (bearing) in the present application.

[0043] Figure 23 is the schematic diagram of step S4 (disassembling the end) in the present application.

[0044] Figure 24 is the schematic diagram of step S4 (pressure release) in the present application.

[0045] Figure 25 is the schematic diagram of step S5 (disassembling the disc spring) in the present application.

[0046] In the figure: side pressure-keeping disc spring assembly 1.1, bottom pressure-keeping disc spring assembly 1.2, side support 2, bottom support 3, disassembling device 4, support platform 5, ship chamber end 6, docking sealing frame 7, lock head working door 8, driving cylinder body 101, bearing support 102, gasket 103, support rod 104, disc spring group 105, stud 106, nut 107, baffle 108, T-shaped boss 109, thrust bearing 110, bushing 111, base 41, box 42, first support wheel group 43.1, second support wheel group 43.2, limiting buffer block 44, guide rod 45, spring 46, linear bearing 47, vibration motor 48, support wheel 4301, clamping plate 4302, rotating shaft 4303, shaft sleeve 4304, bearing 4305, wheel frame 4306, elevator 4307, bottom plate 4308, coupling 4309, hand wheel 4310, driving shaft 4311, bearing seat 4312, guide rail 4313, sliding block 4314, auxiliary wheel frame 4315, auxiliary support wheel 4316. DETAILED DESCRIPTION

[0047] As Figures 1-4As shown, a pressure-holding disc spring for a ship lift docking sealing frame includes side pressure-holding disc spring assemblies 1.1 and bottom pressure-holding disc spring assemblies 1.2. Four pairs of side pressure-holding disc spring assemblies 1.1 are symmetrically arranged on both sides of the docking sealing frame. A side support 2 is installed at the front end of each side pressure-holding disc spring assembly 1.1, and the side support 2 is welded and fixed to the docking sealing frame 7. A pair of bottom pressure-holding disc spring assemblies 1.2 are arranged at the bottom of the docking sealing frame 7. A bottom support 3 is installed at the front end of each bottom pressure-holding disc spring assembly 1.2, and the bottom support 3 is welded and fixed to the docking sealing frame. The other ends of the side pressure-holding disc spring assemblies 1.1 and the bottom pressure-holding disc spring assemblies 1.2 are installed on a support platform 5, which is mounted on the steel structure of the ship lift's bow.

[0048] The side pressure-holding disc spring assembly 1.1 and the bottom pressure-holding disc spring assembly 1.2 have the same structure, both consisting of a drive cylinder 101, a bearing support 102, a washer 103, a support rod 104, a disc spring assembly 105, a stud 106, a nut 107, a baffle 108, a T-shaped boss 109, a thrust bearing 110, and a bushing 111.

[0049] like Figures 5-6 As shown, in the side pressure-holding disc spring assembly 1.1 and the bottom pressure-holding disc spring assembly 1.2, the two shafts on the cylinder body of the drive cylinder 101 are respectively mounted on bearing supports 102, and the two bearing supports 102 are fixedly mounted on the support platform 5. The piston rod in the drive cylinder 101 is assembled with a threaded hole at one end of the support rod 104, and the threaded hole at the other end of the support rod 104 is threadedly connected to the stud 106.

[0050] The support rod 104 is sequentially equipped with a washer 103, a disc spring assembly 105, and a T-shaped boss 109.

[0051] Among them, washer 103 limits the left end of disc spring assembly 105, which is composed of several disc springs installed in a mating combination to maintain pressure. T-shaped boss 109 is used to position and install thrust bearing 110 on the right side.

[0052] The corresponding side support 2 or bottom support 3 has a central hole at its lower end. The side support 2 or bottom support 3 passes through the central hole and passes through the support rod 104 and is located on the right side of the thrust bearing 110. A bushing 111 is installed on the support rod 104 on the right side of the side support 2 or bottom support 3. The bushing 111 is fixed to the side support 2 or bottom support 3 as a whole by bolts.

[0053] The stud 106 is sequentially fitted with a baffle 108 and a nut 107. The baffle 108 limits the side support 2 or the bottom support 3 to prevent it from sliding out of the support rod 104.

[0054] During the docking operation of the sealing frame, the drive cylinders 101 in the side pressure-holding disc spring assembly 1.1 and the bottom pressure-holding disc spring assembly 1.2 extend synchronously. The drive cylinders 101 compress the disc spring assembly 105 on the support rod 104, causing the sealing frame located on the side support 2 and the bottom support 3 to extend. When the water stop at the front end of the sealing frame contacts the water stop steel plate of the gate working door and is compressed into place, the sealing frame stops moving. The drive cylinders 101 and the support rod 104 continue to extend synchronously, and the disc spring assembly 105 continues to be compressed, so that the water stop at the front end of the sealing frame is subjected to a certain pressure, and then the drive cylinders 101 stop moving, ensuring the water stop effect. When the sealing frame docking is completed, there is a gap between the baffle 108 and the bushing end 111.

[0055] When the docking sealing frame is disengaged, the drive cylinder 101 and support rod 101 in the side pressure-holding disc spring assembly 1.1 and the bottom pressure-holding disc spring assembly 1.2 retract synchronously. The disc spring assembly 105 gradually resets, causing the water-stop steel plate at the front end of the docking sealing frame and the water-stop steel plate of the gate working door located on the side support 2 and the bottom support 3 to release pressure. When the gap between the baffle 108 and the bushing end face is zero, the drive cylinder 101 and support rod 101 retract synchronously. The baffle 108 drives the docking sealing frame on the side support 2 and the bottom support 3 to begin to retract until the docking sealing frame is disengaged and the drive cylinder 101 stops moving.

[0056] like Figures 8-9 As shown, a disassembly and assembly device for the pressure-holding disc spring of a ship lift docking sealing frame is provided. The disassembly and assembly device 4 is located directly below the side pressure-holding disc spring assembly 1.1 and the bottom pressure-holding disc spring assembly 1.2 and is installed on the support platform 5. It is used for disassembly, assembly and maintenance of the disc spring assembly.

[0057] The disassembly and assembly device 4 consists of a base 41, a housing 42, a first support wheel set 43.1, a second support wheel set 43.2, a limit buffer block 44, a guide rod 45, a spring 46, a linear bearing 47, and a vibration motor 48.

[0058] like Figure 11 As shown, four linear bearings 47 are installed on the base 41. The housing 42 is located directly above the base 41. Four guide rods 45 and four limiting buffer blocks 44 are fixed on the protrusions on both sides of the housing 42. The guide rods 45 are assembled on the linear bearings 47, and springs 46 are installed on the guide rods to allow the housing 42 to move up and down along the guide rod axis. The four limiting buffer blocks 44 restrict the housing 42 from moving downward to its limit. The vibration motor 48 is installed on the connecting plate in the middle of the housing 42. The vibration motor 48 is installed at an angle so that it has horizontal and vertical excitation forces when working, which facilitates the release of disc spring force.

[0059] like Figure 10 As shown, a first support wheel assembly 43.1 and a second support wheel assembly 43.2 are installed on the upper part of the housing 42.

[0060] As shown in Figures 16-17 , the first support wheel group 43.1 and the second support wheel group 43.2 are structurally identical, each including a bottom plate 4308 on which a lifting machine 4307, a guide rail 4313 and a bearing seat 4312 are mounted. Among them, the screw in the lifting machine 4307 is connected with the bottom of the wheel frame 4306 through a flange, and four groups of sliding blocks 4314 are mounted on the wheel frame 4306, which slide up and down along the guide rail 4313. The input shaft of the lifting machine 4307 is connected with one end of the driving shaft 4311 through the shaft coupling 4309, the driving shaft 4311 is assembled with the bearing seat 4312, and the other end of the driving shaft 4311 is connected with the hand wheel 4310. Rotating the hand wheel 4310 can make the screw of the lifting machine 4307 move up and down, thereby driving the wheel frame 4306 to move up and down. The model of the lifting machine 4307 here is JWM-025DS (Texas Reducer Factory).

[0061] As shown in Figures 17-18 , U-shaped grooves are provided on the left and right sides of the upper end of the wheel frame 4306, and the rotating shaft 4303 is installed at both ends of the U-shaped groove. Two clamping plates 4302 are located in the groove of the rotating shaft 4303 for axial and circumferential positioning. Two groups of shaft sleeves 4304 and bearings 4305 are installed at both ends of the rotating shaft 4303, and the support wheels 4301 are installed on the bearings 4305.

[0062] As shown in Figures 13-14 , the auxiliary wheel frame 4315 is installed on the wheel frame 4306, and the auxiliary wheel frame 4315 has two U-shaped grooves at the top, and the two groups of auxiliary support wheels 4316 are respectively installed in the U-shaped grooves at the top of the auxiliary wheel frame 4315.

[0063] The dismounting device cannot simultaneously perform dismounting operation on two or more than two pressure maintaining disc spring assemblies, so as to avoid force imbalance of the sealing frame and stretching travel deviation. When the dismounting device 4 performs dismounting operation on a single bottom pressure maintaining disc spring assembly 1.2 or lower disc spring group in the side pressure maintaining disc spring assembly 1.1, the auxiliary wheel frame 4315 and the auxiliary support wheel 4316 need to be removed. When the dismounting device 4 performs dismounting operation on the upper disc spring group in the side pressure maintaining disc spring assembly 1.1, the auxiliary wheel frame 4315 and the auxiliary support wheel 4316 need to be reinstalled.

[0064] As shown in Figure 16 , the support wheel 4301 and the auxiliary support wheel 4316 are both circular groove rollers, the diameter of the circular groove is equal to the outer diameter of the disc spring, and they are both made of wear-resistant nylon material. As shown in Figure 14 , the outer contour size of the auxiliary support wheel 4316 is smaller than that of the support wheel 4301, which is to adapt to the spacing between a pair of side pressure maintaining disc spring assemblies 1.1. The first support wheel group 43.1 and the second support wheel group 43.2 each install a group of auxiliary support wheels 4316, which is to increase the support strength.

[0065] As shown in Figure 9 , the first support wheel set 43.1 and the second support wheel set 43.2 support the support wheel 4301 and the auxiliary support wheel 4310 respectively at a distance from the disc spring group in the initial position.

[0066] A method for disassembling the disc spring of the pressure maintaining of the butt joint sealing frame of the ship lift, comprising the following steps:

[0067] S1: push out the butt joint sealing frame: the ship cabin of the ship lift is stopped at the lowest position, and the butt joint sealing frame is staggered with the water stop steel plate surface of the lock head working door. As shown in Figures 20-21 , the drive cylinder body 101 in the side pressure maintaining disc spring assembly 1.1 and the bottom pressure maintaining disc spring assembly 1.2 is synchronously extended, the butt joint sealing frame is pushed out as a whole, and stops when the relative displacement is h. When the displacement is h, the distance between the end surface of the support rod 101 and the center hole end surface of the side support 2 or the bottom support 3 after the single drive cylinder body 101 is retracted in place is greater than the thickness of the thrust bearing 110, which is convenient for disassembling the disc spring.

[0068] S2: pressure maintaining disc spring assembly pressure application: as shown in Figures 20-21 , the single drive cylinder body 101 is extended to compress the pressure maintaining disc spring, and at the same time, the other drive cylinder bodies 101 remain stationary so that the butt joint sealing frame has no relative displacement. When the gap between the baffle plate 108 and the end surface of the bushing 111 is generated, the drive cylinder body 101 stops acting, so that the stud 106, the nut 107 and the baffle plate 108 are in a no-load state.

[0069] S3: disassembling device bearing: as shown in Figure 22 , for the operation of the bottom pressure maintaining disc spring assembly 1.2 and the lower disc spring group of the pair of side disc spring assemblies 1b, the hand wheel 4310 in the first support wheel set 43.1 and the second support wheel set 43.2 is rotated to drive the elevator 4307 to rise, and the wheel frame 4306 is driven by the elevator 4307 to slide upward along the guide rail 4313. When the support wheel 4301 contacts the disc spring, the rotation of the hand wheel 4310 is stopped, so that the support wheel 4301 bears the self weight of the disc spring assembly;

[0070] For the operation of the upper disc spring group in the pair of side pressure maintaining disc spring assemblies 1.1, the auxiliary wheel frame 4315 and the auxiliary support wheel 4316 need to be reassembled, and the hand wheel 4310 is rotated to drive the elevator 4307 to rise. When the auxiliary support wheel 4316 contacts the disc spring, the rotation of the hand wheel 4310 is stopped, so that the auxiliary support wheel 4316 bears the self weight of the disc spring assembly.

[0071] S4: disc spring group pressure release: as shown in Figures 23-24As shown, the nut 107, baffle 108, and stud 106 are removed in sequence. The single drive cylinder 101 is retracted in small strokes multiple times in steps. At the same time, the vibration motor 48 drives the housing 42 to vibrate back and forth along the guide rod 45 relative to the bottom beam 41. The first support wheel group 43.1 and the second support wheel group 43.2 on the housing 42 vibrate synchronously, so that the pressure of the pressure-holding disc spring is released evenly and slowly. When the drive cylinder 101 retracts to the position, the vibration motor 48 stops. At this time, the disc spring has returned to its free height and the disc spring force has been completely released. During the retraction of the drive cylinder 101, the support wheel 4301 or the auxiliary support wheel 4316 rotates with the movement of the disc spring to reduce friction and prevent the disc spring from getting stuck.

[0072] S5: Disc spring assembly removal: as follows Figure 25 As shown, first, rotate the handwheel 4310 in the second support wheel group 43.2 to disengage the support wheel 4301 or auxiliary support wheel 4316 from the disc spring. Then, sequentially remove the thrust bearing 110, T-shaped boss 109, and disc spring between the first support wheel group 43.1 and the side support 2 or bottom support 3. Next, rotate the handwheel 4310 in the second support wheel group 43.2 to make the support wheel 4301 or auxiliary support wheel 4316 contact the support rod and bear the weight. Then, rotate the handwheel 4310 in the first support wheel group 43.1 to disengage the support wheel 4301 or auxiliary support wheel 4316 from the disc spring. Move the remaining disc spring towards the second support wheel group 43.2. Then, alternately operate the first support wheel group 43.1 and support wheel b43b to raise and lower until all the remaining disc springs are removed.

[0073] S6: Reinstallation of Disc Spring Assembly: First, remove rust from the support rod 104. Apply grease evenly to the cylindrical surface of the support rod 104. Rotate the handwheel 4310 in the first support wheel assembly 43.1 to make the support wheel 4301 or auxiliary support wheel 4316 contact the support rod and bear the weight. The second support wheel assembly 43.2 is in the initial position. Next, install some of the new disc springs on the support rod 104 in a pairing combination. By alternately operating the first support wheel assembly 43.1 and support wheel b43b to raise and lower, gradually install all the new disc springs on the support rod. Finally, complete the reinstallation of the T-shaped boss 109 and the thrust bearing 110.

[0074] S7: Disc spring assembly reset: First, operate the hand wheels 4310 in the first support wheel set 43.1 and the second support wheel set 43.2 to make the support wheels 4301 or auxiliary support wheels 4316 bear the weight of the disc spring assembly. Second, operate the single drive cylinder body 101 to extend and pass through the center hole of the bushing 111 until the stroke of the drive cylinder body 101 is consistent with that in step S2, and then stop. During the extension of the drive cylinder body 101, the hand wheels 4310 in the first support wheel set 43.1 and the second support wheel set 43.2 can be fine-tuned to make the support rods 104 coaxial with the center hole of the bushing 111. Finally, sequentially install the stud 106, the baffle 108, and the nut 107, and operate the single drive cylinder body 101 to retract until the stroke is consistent with that of the other drive cylinder bodies 101, and then stop.

[0075] S8: Reset the docking sealing frame: Synchronously retract the drive cylinder bodies 101 in the side pressure-keeping disc spring assembly 1.1 and the bottom pressure-keeping disc spring assembly 1.2 to make the docking sealing frame as a whole retreat, and stop when the relative displacement of the docking sealing frame as a whole retreat is h.

Claims

1.A method for disassembling pressure-keeping disc springs of a ship-lift butt-joint sealing frame, the pressure-keeping disc springs comprising a side pressure-keeping disc spring assembly (1.1) and a bottom pressure-keeping disc spring assembly (1.2); the side pressure-keeping disc spring assembly (1.1) is provided with a side support (2) at the front end, and the bottom pressure-keeping disc spring assembly (1.2) is provided with a bottom support (3) at the front end; the side support (2) and the bottom support (3) are both welded and fixed on the butt-joint sealing frame; the side pressure-keeping disc spring assembly (1.1) and the bottom pressure-keeping disc spring assembly (1.2) both comprise a driving cylinder (101), a threaded hole at one end of a support rod (104) is assembled with a piston rod in the driving cylinder (101), and a threaded hole at the other end of the support rod (104) is threadedly connected with a stud (106); a washer (103), a disc spring group (105), and a T-shaped boss (109) are sequentially assembled on the support rod (104); the side support (2) and the bottom support (3) are provided with a central hole at the lower end, and the side support (2) and the bottom support (3) pass through the support rod (104) through the central hole and are located on the right side of a thrust bearing (110); a bushing (111) is installed on the support rod (104) on the right side of the side support (2) or the bottom support (3); the stud (106) is sequentially provided with a baffle (108) and a nut (107); A disassembling device for realizing the disassembling method, comprising a base (41), a box (42), a first support wheel group (43.1), a second support wheel group (43.2), and a vibration motor (48); The box (42) is located directly above the base (41), the vibration motor (48) is installed on a connecting plate in the middle of the box (42), and the first support wheel group (43.1) and the second support wheel group (43.2) are installed on the upper part of the box (42); the first support wheel group (43.1) and the second support wheel group (43.2) both comprise a bottom plate (4308), a lifter (4307) is installed on the bottom plate (4308), a screw in the lifter (4307) is connected with the bottom of a wheel frame (4306) through a flange, and rotating a hand wheel (4310) can make the screw of the lifter (4307) move up and down, thereby driving the wheel frame (4306) to move up and down; U-shaped grooves are provided on the left and right sides of the upper end of the wheel frame (4306), and a rotating shaft (4303) is installed in the U-shaped grooves at both ends; two clamping plates (4302) are located in the grooves of the rotating shaft (4303), two groups of shaft sleeves (4304) and bearings (4305) are installed at both ends of the rotating shaft (4303), and support wheels (4301) are installed on the bearings (4305); an auxiliary wheel frame (4315) is installed on the wheel frame (4306), and the auxiliary wheel frame (4315) has two U-shaped grooves at the top, and two groups of auxiliary support wheels (4316) are respectively installed in the U-shaped grooves at the top of the auxiliary wheel frame (4315); The method for disassembling pressure-keeping disc springs of a ship-lift butt-joint sealing frame comprises the following steps: S1: The docking sealing frame is pushed out: the ship chamber of the ship lift is stopped at the lowest position, the docking sealing frame is staggered with the gate sealing steel plate, the side pressure-keeping disc spring assembly (1.1) and the bottom pressure-keeping disc spring assembly (1.2) are synchronously extended, the docking sealing frame is pushed out as a whole, and the extension is stopped when the relative displacement is h; when the displacement is h, the single driving cylinder (101) is retracted in place, the distance between the end surface of the supporting rod and the center hole end surface of the side support (2) or the bottom support (3) is greater than the thickness of the thrust bearing (110), the disc spring is convenient to disassemble and assemble; S2: The pressure-keeping disc spring assembly is pressed: the single driving cylinder (101) is operated to extend and compress the pressure-keeping disc spring, and the other driving cylinders (101) remain stationary so that the docking sealing frame has no relative displacement; when the gap between the baffle (108) and the bushing (111) end surface is generated, the driving cylinder (101) stops, the stud (106), the nut (107) and the baffle (108) are in a no-load state; S3: The dismounting device bears: for the operation of the bottom pressure-keeping disc spring assembly (1.2) and the lower disc spring group of the side pressure-keeping disc spring assembly (1.1), the lifting machine (4307) is driven to make the wheel frame (4306) slide upward along the guide rail (4313), and the supporting wheel (4301) is stopped when it contacts the disc spring to bear the weight of the disc spring assembly; For the operation of the upper disc spring group of the side pressure-keeping disc spring assembly (1.1), the auxiliary wheel frame (4315) and the auxiliary supporting wheel (4316) need to be reassembled, the lifting machine (4307) drives the wheel frame (4306) to slide upward, and the auxiliary supporting wheel (4316) bears the weight of the disc spring assembly when the auxiliary supporting wheel (4316) contacts the disc spring to stop the hand wheel (4310) from rotating; S4: The disc spring group releases pressure: the nut (107), the baffle (108) and the stud (106) are removed in sequence, the single driving cylinder (101) is retracted in small steps and multiple times, the vibration motor (48) is operated to drive the box (42) to vibrate back and forth along the guide rod (45) relative to the base (41), the first supporting wheel group (43.1) and the second supporting wheel group (43.2) on the box (42) vibrate synchronously, the pressure of the pressure-keeping disc spring is uniformly and slowly released, the vibration motor (48) stops when the driving cylinder (101) is retracted in place, the disc spring has recovered the free height, the disc spring force has been completely released, and the supporting wheel (4301) or the auxiliary supporting wheel (4316) rotates with the disc spring during the retraction of the driving cylinder (101), thereby reducing the friction and avoiding the disc spring from being blocked. S5: Disc spring group disassembly: First, rotate the hand wheel (4310) in the second support wheel group (43.2) to make the support wheel (4301) or auxiliary support wheel (4316) in the second support wheel group (43.2) contact with the disc spring, and then sequentially complete the removal of the thrust bearing (110), T-shaped boss (109) and disc spring between the first support wheel group (43.1) and the side support (2) or the bottom support (3). Second, rotate the hand wheel (4310) in the second support wheel group (43.2) to make the support wheel (4301) or auxiliary support wheel (4316) contact with the support rod and bear the weight. Third, rotate the hand wheel (4310) in the first support wheel group (43.1) to make the support wheel (4301) or auxiliary support wheel (4316) contact with the disc spring, and then sequentially complete the removal of the thrust bearing (110), T-shaped boss (109) and disc spring between the first support wheel group (43.1) and the side support (2) or the bottom support (3). Fourth, rotate the hand wheel (4310) in the first support wheel group (43.1) to make the support wheel (4301) or auxiliary support wheel (4316) contact with the support rod and bear the weight. Fifth, rotate the hand wheel (4310) in the second support wheel group (43.2) to make the support wheel (4301) or auxiliary support wheel (4316) contact with the disc spring, and then sequentially complete the removal of the thrust bearing (110), T-shaped boss (109) and disc spring between the first support wheel group (43.1) and the side support (2) or the bottom support (3). Sixth, through the alternate operation of the first support wheel group (43.1) and the second support wheel group (43.2), the remaining disc spring is removed. S6: Disc spring group reinstallation: First, clean the rust on the support rod (104) and evenly apply lubricating grease on the cylindrical surface of the support rod (104). Second, rotate the hand wheel (4310) in the first support wheel group (43.1) to make the support wheel (4301) or auxiliary support wheel (4316) contact with the support rod and bear the weight. Third, the second support wheel group (43.2) is in the initial position. Fourth, install part of the new disc spring on the support rod (104) in a matching combination. Fifth, through the alternate operation of the first support wheel group (43.1) and the second support wheel group (43.2), the new disc spring is gradually installed on the support rod. Sixth, finally complete the reinstallation of the T-shaped boss (109) and the thrust bearing (110). S7: Disc spring assembly reset: First, operate the hand wheel (4310) in the first support wheel group (43.1) and the second support wheel group (43.2) to make the support wheel (4301) or auxiliary support wheel (4316) bear the weight of the disc spring assembly. Second, operate the single drive cylinder (101) to extend through the center hole of the bushing (111) until the drive cylinder (101) stroke is consistent with the S2 step. Third, during the extension of the drive cylinder (101), the hand wheel (4310) in the first support wheel group (43.1) and the second support wheel group (43.2) can be adjusted to make the support rod (104) coaxial with the center hole of the bushing (111). Fourth, sequentially reinstall the stud (106), baffle (108) and nut (107). Fifth, operate the single drive cylinder (101) to retract until the stroke is consistent with the other drive cylinders (101). S8: Reset the butt seal frame: The drive cylinders (101) in the side pressure maintaining disc spring assembly (1.1) and the bottom pressure maintaining disc spring assembly (1.2) are retracted synchronously to make the butt seal frame retreat as a whole. Stop when the relative displacement of the butt seal frame is h.

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