A device for dismounting and mounting an eccentric shaft in a roll box and a method of use

Abstract

The application belongs to the technical field of assembly tooling, and particularly discloses a device and method for disassembling and assembling eccentric shafts in a roller box, which comprises an upper fixing frame, a lower fixing frame, a clamping mechanism, a turnover mechanism and a hydraulic shaft pulling mechanism. The clamping mechanism comprises a large sleeve fixing assembly, a small sleeve fixing assembly and a limiting assembly. The large sleeve fixing assembly comprises a large sleeve fixing plate and a small sleeve movable clamping plate. The small sleeve fixing assembly comprises a small sleeve fixing plate and a small sleeve movable clamping plate. The large sleeve movable clamping plate and the small sleeve movable clamping plate are respectively connected with slide rails in a sliding mode. Two first clamping grooves and two second clamping grooves are respectively formed in the large sleeve fixing plate and the large sleeve movable clamping plate and the small sleeve fixing plate and the small sleeve movable clamping plate. The two first clamping grooves and the two second clamping grooves are arranged to realize double-station simultaneous operation. The clamping assembly, the hydraulic shaft pulling mechanism and the turnover mechanism are arranged to complete the disassembly or assembly of two eccentric shafts at the same time, thereby improving the disassembly and assembly efficiency of the eccentric shafts.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of assembly tooling, in particular to a device for disassembling and assembling an eccentric shaft in a roller box and a use method thereof. BACKGROUND

[0002] High-speed wire rods and high-speed bars are largely rolled by roller boxes and modular rolling mills. The disassembly and assembly of eccentric shafts in the roller boxes are usually completed by using simple self-made assembly tools. The eccentric shaft is composed of an eccentric sleeve assembly and a roller shaft, wherein the eccentric sleeve assembly includes a large eccentric sleeve, a small eccentric sleeve, an intermediate sleeve, and components such as a positioning bearing, a damping washer, and a gland between the eccentric sleeve assembly and the roller shaft. The current assembly tool is relatively simple, which is to install a nylon sleeve in the middle of a support frame with a table board, and to set a screw rod support device at the bottom. After one end is assembled, the hoisting tool is used for hoisting, and the work surface is manually carried and turned over.

[0003] In the operation process using the above-mentioned assembly tool: 1) the bearing damping washer is easily damaged during hoisting; 2) the work surface is time-consuming and labor-consuming during the turning process using the hoisting tool, and the hoisting may injure the operator, which has certain safety hazards; 3) the original simple tool can only simply assemble the eccentric shaft, but cannot disassemble the roller shaft in the eccentric shaft, the operation process is complicated and scattered, and the hoisting tool needs to be repeatedly used to complete the operation. At present, when the eccentric shaft in the roller box is disassembled and assembled by using the assembly tool, it is not convenient to operate, which leads to low assembly and disassembly efficiency. SUMMARY

[0004] The present application aims to provide a device for disassembling and assembling an eccentric shaft in a roller box and a use method thereof, so as to solve the problem of low assembly and disassembly efficiency caused by the over-simple and inconvenient operation of the existing eccentric shaft assembly and disassembly device.

[0005] In order to achieve the above-mentioned purpose, the basic scheme provided by the present application is: a device for disassembling eccentric shafts in a roller box, comprising an upper fixing frame, a lower fixing frame, a clamping mechanism, a turnover mechanism and a hydraulic shaft pulling mechanism for disassembling a locating bearing in a small eccentric sleeve, the upper fixing frame is fixedly connected with the lower fixing frame, the clamping mechanism comprises a large sleeve fixing assembly, a small sleeve fixing assembly and a limiting assembly, the large sleeve fixing assembly comprises a large sleeve fixing plate and a large sleeve movable clamping plate, the small sleeve fixing assembly comprises a small sleeve fixing plate and a small sleeve movable clamping plate, the upper fixing frame is provided with two side plates, the two side plates are connected to the upper fixing frame through the turnover mechanism, the large sleeve fixing plate and the small sleeve fixing plate are fixedly connected with the side plates, two slide rails are fixedly connected between the two side plates, the large sleeve movable clamping plate and the small sleeve movable clamping plate are slidably connected with the slide rails, two limiting assemblies for limiting the large sleeve movable clamping plate and the small sleeve movable clamping plate are connected to the slide rails, two first clamping grooves are formed in the large sleeve fixing plate and the large sleeve movable clamping plate respectively, and two second clamping grooves are formed in the small sleeve fixing plate and the small sleeve movable clamping plate respectively.

[0006] The turnover mechanism comprises two worm gears and two fixed seats, each fixed seat is bolted to the upper fixing frame, a rotating shaft is rotatably connected between each side plate and the fixed seat, each worm gear is fixedly sleeved on the rotating shaft and fixedly connected with the side plate, one of the worm gears is engaged with a worm, the upper fixing frame is fixedly connected with a first hydraulic motor and a connecting ring, the worm is rotatably connected in the connecting ring, and the worm is fixedly connected with the output shaft of the first hydraulic motor.

[0007] The principle of the present application is that: when the device is used, the eccentric shaft assembly to be disassembled or assembled is hoisted into the device by a hoisting tool, the large eccentric sleeve is clamped by the first clamping grooves of the large sleeve fixing plate and the large sleeve movable clamping plate, and the small eccentric sleeve is clamped by the second clamping grooves of the small sleeve fixing plate and the small sleeve movable clamping plate, after clamping is completed, the operator first disassembles or assembles the bearing and other eccentric shaft assemblies near the upper end of one side, and then rotates the side plate through the turnover mechanism, so that the clamped assembly to be disassembled or assembled is turned over by 180 degrees, and then the assembly on the other side is disassembled or assembled.

[0008] The present application has the following advantages:

[0009] (1) The large eccentric sleeve and the small eccentric sleeve can be clamped by the large sleeve fixing assembly and the small sleeve fixing assembly, so that the assembly to be disassembled or assembled can be kept stable and reliable;

[0010] (2) When disassembling the roller shaft in the eccentric shaft, the roller shaft is pushed out of the small eccentric sleeve through the hydraulic shaft pulling mechanism, which is simple to operate and makes the disassembly of the roller shaft more smooth;

[0011] (3) By setting the turnover mechanism, when disassembling or assembling the eccentric shaft assembly, the operator avoids the need to use hoisting tools to hoist multiple times, and under the condition that hoisting tools are not available, the turnover of the disassembly or assembly work surface of the eccentric shaft assembly is realized, which is convenient to operate, and further avoids the wear of the hoisting tool on the eccentric shaft assembly during hoisting.

[0012] (4) By setting two first clamping grooves and two second clamping grooves, double-station simultaneous operation is realized, and the entire device can complete the disassembly or assembly of two eccentric shafts at the same time, thereby improving the disassembly and assembly efficiency of the eccentric shaft.

[0013] (5) When the first hydraulic motor drives the worm to rotate, the worm drives the worm gear to rotate forward or reversely, the side plate drives the clamped eccentric shaft assembly to turn over, so that the assembly to be disassembled or assembled is placed above the entire device, which is convenient for operation.

[0014] Scheme two, which is a preferred embodiment of the basic scheme, each limiting component includes two fixed pins and two limiting blocks, each limiting block is fixedly connected with the sliding rail, the large sleeve moving clamping plate and the small sleeve moving clamping plate are respectively fixedly connected with supporting blocks, each fixed pin is slidingly penetrated through the supporting block and extends to the limiting block;

[0015] The fixed pin can lock the large sleeve moving clamping plate or the small sleeve moving clamping plate. When the large sleeve moving clamping plate and the small sleeve moving clamping plate are locked, the first clamping groove on the large sleeve fixed plate and the large sleeve moving clamping plate clamps the large eccentric sleeve, and the second clamping groove on the small sleeve fixed plate and the small sleeve moving clamping plate clamps the small eccentric sleeve.

[0016] Scheme three, which is a preferred embodiment of scheme two, the hydraulic shaft pulling mechanism includes a fixed shell, two hydraulic cylinders and a lifting unit for adjusting the height of the fixed shell, the fixed shell is provided with two limiting grooves, each hydraulic cylinder is fixedly connected inside the fixed shell, the lifting unit includes two first driving rods and two rollers, each first driving rod is hingedly connected with a second driving rod, the bottom ends of the lower fixed frame are respectively fixedly connected with a slide and a fixed block, the two ends of each first driving rod are respectively hingedly connected with the fixed block and the side wall of the fixed shell, the side close to the slide of the second driving rod is rotatably connected with the roller, each roller is rotatably connected on the slide, a moving rod is rotatably connected between the two rollers, and the lower fixed frame is provided with a driving assembly for driving the moving rod to move;

[0017] When the fixed shell is horizontally placed, the fixed shell is lifted by the lifting unit, and when the roll shaft in the eccentric shaft is assembled, the roll shaft is conveniently lifted upward by the top of the fixed shell, so that the positioning bearing, damping washer and gland are conveniently installed, when the operator manually stands up the fixed shell, the first driving rod and the second driving rod are driven by the driving assembly to move towards the middle hinge direction, the fixed shell is lifted for a distance, at this time, the limiting groove of the fixed shell is just clamped at the shaft extractor clamping groove on the small eccentric sleeve, the small eccentric sleeve is clamped, and the roll shaft in the small eccentric sleeve can be lifted out by the hydraulic cylinder fixed in the fixed shell, so that the roll shaft is disassembled.

[0018] In scheme four, which is a preferred scheme of scheme three, the driving assembly comprises a second hydraulic motor and a lead screw, one end of the lead screw is fixedly connected with the second hydraulic motor, and the other end of the lead screw is threadedly connected with the moving rod and rotationally connected with the lower fixed frame; when the second hydraulic motor is started, the moving rod gradually approaches the second hydraulic motor when the lead screw is driven by the second hydraulic motor to rotate in the forward direction, and the moving rod gradually moves away from the second hydraulic motor when the lead screw is driven by the second hydraulic motor to rotate in the reverse direction.

[0019] In scheme five, which is a preferred scheme of scheme four, a nylon washer is arranged in each of the first clamping groove and the second clamping groove; by arranging the nylon washer, when the first clamping groove and the second clamping groove clamp the large eccentric sleeve and the small eccentric sleeve respectively, the friction is increased, and the outer walls of the large eccentric sleeve and the small eccentric sleeve are prevented from being worn due to clamping.

[0020] In scheme six, which is a preferred scheme of scheme five, a handle is fixedly connected to the end of each fixing pin away from the side plate; by arranging the handle, the operator can conveniently adjust the fixing pin.

[0021] In scheme seven, which is a preferred scheme of scheme six, two limiting rods are fixedly connected to the fixed shell, each limiting rod is overlapped on the second driving rod, and the first driving rod and the second driving rod are located at the same horizontal height away from the sliding way;

[0022] When the fixed shell is kept horizontal and stationary, the limiting rods are overlapped on the second driving rod to keep the fixed shell stable, the limiting rods are hinged with the first driving rod at the hinge shaft on the fixed shell, and when the fixed shell is lifted, the limiting rods slide on the second driving rod, and at this time, the top of the fixed shell can still be steadily lifted by the lifting unit in a horizontal state.

[0023] In scheme eight, a method for using a device for disassembling an eccentric shaft in a roll box is provided, and the disassembly method of the eccentric shaft is as follows:

[0024] S1: open the fixed pin, respectively, to the direction away from the large set of fixed plate and small set of fixed plate pull open the large set of moving card and small set of moving card, through the lifting tool into the first slot and the second slot of the eccentric shaft to be disassembled, with the large set of moving card and the large set of fixed plate clamping the large eccentric sleeve, with the small set of moving card and the small set of fixed plate clamping the small eccentric sleeve, and lock the fixed pin;

[0025] S2: through the driving device to make the worm gear, worm and side plate rotation, the clamping of the eccentric shaft is turned 180 degrees, the operator will be close to the small eccentric sleeve end of the retainer and gland remove;

[0026] S3: open the fixed pin of the small set of moving card, remove the bolt between the small eccentric sleeve and the intermediate sleeve, and then lock the small set of moving card through the fixed pin;

[0027] S4: through the driving device to make the worm gear, worm and side plate rotation, the clamping of the eccentric shaft is turned 180 degrees again, so that the large eccentric sleeve back to the initial position, the bolt between the large eccentric sleeve and the intermediate sleeve is removed, and the large eccentric sleeve and the intermediate sleeve are taken off in turn;

[0028] S5: vertical fixed shell, through the driving device to rotate the screw, so that the moving rod gradually close to the fixed block, through the first drive rod and the second drive rod the fixed shell is gradually lifted, with the small eccentric sleeve on the limit groove card slot card slot, drive the hydraulic cylinder to the small eccentric sleeve in the positioning bearing, and then make the hydraulic cylinder reset, the fixed shell limit groove from the small eccentric sleeve and put flat fixed shell, take out the roller;

[0029] S6: open the fixed pin, pull open the small set of moving card and take off the small eccentric sleeve, complete the disassembly;

[0030] The assembly method of the eccentric shaft is as follows:

[0031] S7: the large eccentric sleeve and the intermediate sleeve to be assembled are fixed by bolt connection in advance, the fixed pin is opened and the large set of moving card and the small set of moving card are pulled open, the large eccentric sleeve and the intermediate sleeve are lifted into the device through the lifting tool, the large set of moving card and the large set of fixed plate are clamped with the first slot of the large set of moving card, and the fixed pin near the large set of moving card is locked, the first hydraulic motor is started to make the worm gear, worm and side plate rotate, the clamped large eccentric sleeve and intermediate sleeve are turned 180 degrees, and the roller is inserted into the large eccentric sleeve and the intermediate sleeve;

[0032] S8: open the fixed pin near the small eccentric sleeve, pull open the small set of moving card, put in the small eccentric sleeve and connect the small eccentric sleeve and the intermediate sleeve by bolt, clamp the small eccentric sleeve with the second slot of the small set of moving card and the small set of fixed plate;

[0033] S9: start the second hydraulic motor to drive the screw rod to rotate forward, so that the moving rod gradually approaches the fixed block, the fixed shell is gradually lifted through the first driving rod and the second driving rod, the top of the fixed shell lifts the roller shaft, the lifting distance needs to ensure that the positioning bearing and damping washer at the end of the roller shaft can be installed, after installing the positioning bearing and damping washer, install the gland and press the gland tightly, reverse the screw rod through the driving device, so that the fixed shell gradually descends and returns to the initial height;

[0034] S10: rotate the worm gear, worm and side plate through the driving device, turn the clamped eccentric shaft 180 degrees again, use the lifting tool to lift the assembled eccentric shaft out of the device and into the roller box.

[0035] The assembly and disassembly operation process adopted by the present application, when disassembling, open the fixed pins on the large set of movable clamping plates and the small set of movable clamping plates, use the lifting tool to lift the two eccentric shafts on the work station and clamp and fasten, use the turnover mechanism to repeatedly turn over the working surface, disassemble the bolts between the small eccentric sleeve and the intermediate sleeve, the bolts between the large eccentric sleeve and the intermediate sleeve, the large eccentric sleeve, the intermediate sleeve, the positioning bearing, the damping washer, the gland, the roller shaft and the small eccentric sleeve; when assembling, put the bolt-connected large eccentric sleeve and intermediate sleeve into the device, invert the roller shaft and put it into the device, under the cooperation of the turnover mechanism, assemble the small eccentric sleeve, the positioning bearing, the damping washer, the gland, the small eccentric sleeve and the bolts between the intermediate sleeve. The operation time is greatly shortened, the disassembly process is changed from ground operation to mechanical mechanism assistance, and at the same time, the damage to the damping washer and torque of the bearing is avoided during assembly, so that the operation process is more simple and fast. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a southwest isometric view of the device and method for disassembling and assembling the eccentric shaft in the roller box of the present application;

[0037] Figure 2 is a southeast isometric view of the device and method for disassembling and assembling the eccentric shaft in the roller box of the present application;

[0038] Figure 3 is a front view of the device and method for disassembling and assembling the eccentric shaft in the roller box of the present application;

[0039] Figure 4 is a left view of the device and method for disassembling and assembling the eccentric shaft in the roller box of the present application;

[0040] Figure 5 is a southwest isometric view of the hydraulic shaft pulling mechanism in the device and method for disassembling and assembling the eccentric shaft in the roller box of the present application when it is erected;

[0041] Figure 6 is Figure 5 a front view;

[0042] Figure 7 Figure 1 is a perspective view of the side plate, limiting assembly, large sleeve fixing assembly and small sleeve fixing assembly connected in the device and method for disassembling and assembling the eccentric shaft in the roller box. DETAILED DESCRIPTION

[0043] The application will be further described in detail through specific embodiments:

[0044] The reference signs in the drawings of the specification include: 1, upper fixing frame; 2, lower fixing frame; 3, large sleeve fixing plate; 4, large sleeve moving clamping plate; 5, small sleeve fixing plate; 6, small sleeve moving clamping plate; 7, side plate; 8, fixing pin; 9, limiting block; 10, handle; 11, supporting block; 12, slide rail; 13, first clamping groove; 14, second clamping groove; 15, worm gear; 16, worm; 17, fixing seat; 18, connecting ring; 19, fixing shell; 20, hydraulic cylinder; 21, first driving rod; 22, second driving rod; 23, fixing block; 24, rotating shaft; 25, slide; 26, roller; 27, limiting rod; 28, limiting groove; 29, screw rod; 30, moving rod; 31, first hydraulic motor; 32, second hydraulic motor.

[0045] As shown in Figures 1 to 7 : a device and method for disassembling and assembling the eccentric shaft in the roller box, comprising an upper fixing frame 1, a lower fixing frame 2, a clamping mechanism, a turnover mechanism and a hydraulic shaft pulling mechanism, the clamping mechanism comprising a large sleeve fixing assembly, a small sleeve fixing assembly and a limiting assembly, the large sleeve fixing assembly comprising a large sleeve fixing plate 3 and a large sleeve moving clamping plate 4, the small sleeve fixing assembly comprising a small sleeve fixing plate 5 and a small sleeve moving clamping plate 6, two side plates 7 being arranged between the upper fixing frame 1, the large sleeve fixing plate 3 and the small sleeve fixing plate 5 being fixedly connected between the two side plates 7, the large sleeve fixing plate 3 being located directly above the small sleeve fixing plate 5, two limiting assemblies being located between the two side plates 7 for limiting the large sleeve moving clamping plate 4 and the small sleeve moving clamping plate 6.

[0046] The two side plates 7 are fixedly connected with two slide rails 12 respectively, the large sleeve moving clamping plate 4 and the small sleeve moving clamping plate 6 are slidingly connected between the two slide rails 12 in the horizontal direction, the large sleeve moving clamping plate 4 is located directly above the small sleeve moving clamping plate 6, two first clamping grooves 13 are formed on the large sleeve fixing plate 3 and the large sleeve moving clamping plate 4 respectively, two second clamping grooves 14 are formed on the small sleeve fixing plate 5 and the small sleeve moving clamping plate 6 respectively, the first clamping grooves 13 of the large sleeve fixing plate 3 and the first clamping grooves 13 of the large sleeve moving clamping plate 4 are both arc-shaped and match the outer wall of the large eccentric sleeve, the second clamping grooves 14 of the small sleeve fixing plate 5 and the second clamping grooves 14 of the small sleeve moving clamping plate 6 are both arc-shaped and match the outer wall of the small eccentric sleeve, nylon gaskets are arranged in each first clamping groove 13 and second clamping groove 14 respectively.

[0047] Each limiting assembly comprises two fixed pins 8 and two limiting blocks 9, each limiting block 9 is fixedly connected with the sliding rail 12, the large movable clamping plate 4 and the small movable clamping plate 6 are respectively welded with supporting blocks 11, the end of each fixed pin 8 away from the limiting block 9 is fixedly connected with a handle 10, the other end of each fixed pin 8 is slidably penetrated through the supporting block 11 and extends to the limiting block 9, in the process that the two handles 10 drive the fixed pins 8 to slide in the supporting blocks 11 and move close to each other, the free end of the fixed pin 8 can completely separate from the limiting block 9, so that the large movable clamping plate 4 and the small movable clamping plate 6 can smoothly slide in the sliding rail 12.

[0048] The turnover mechanism comprises two worm gears 15 and two fixed seats 17, the two fixed seats 17 are respectively located on the two sides of the upper fixed frame 1 and are bolted with the upper fixed frame 1, each fixed seat 17 is rotatably connected with a rotating shaft 24 through a bearing with the nearest side plate 7, each worm gear 15 is fixedly sleeved on the rotating shaft 24, one side of each worm gear 15 away from the fixed seat 17 is fixedly connected with the side plate 7, one of the worm gears 15 is engaged with a worm 16, the upper fixed frame 1 is fixedly connected with a connecting ring 18, the worm 16 is rotatably connected in the connecting ring 18, bearings or lubricating materials can be arranged in the worm 16 and the connecting ring 18 to reduce the friction between the worm 16 and the connecting ring 18; the upper fixed frame 1 is fixedly connected with a first hydraulic motor 31, the worm 16 is fixedly connected with the output end of the first hydraulic motor 31. The upper fixed frame 1 and the lower fixed frame 2 are made of simple materials such as square steel, the frame body structure of the lower fixed frame 2 close to the upper fixed frame 1 leaves a certain space, which is convenient for the operator to hold the lower fixed frame 2 when moving the device, and is convenient for the movement of the device.

[0049] The hydraulic shaft pulling mechanism comprises a fixed shell 19, two hydraulic cylinders 20 and a lifting unit, the lifting unit comprises two first driving rods 21 and two rollers 26, the bottom ends of the lower fixed frame 2 are respectively fixedly connected with slideways 25, the two first driving rods 21 are respectively arranged on the two sides of the fixed shell 19, the middle parts of each first driving rod 21 are hingedly connected with a second driving rod 22, one side of the lower fixed frame 2 close to the slideway 25 is fixedly connected with a fixed block 23, one end of each first driving rod 21 is hingedly connected with the fixed block 23, the other end of each first driving rod 21 is hingedly connected with the fixed shell 19, each roller 26 is rotatably connected with one end of the second driving rod 22, each roller 26 is rollingly connected in the slideway 25, the two end sidewalls of the fixed shell 19 are respectively fixedly connected with limiting rods 27, each limiting rod 27 is lapped on the second driving rod 22, when the fixed shell 19 is horizontally placed, the ends of the first driving rod 21 and the second driving rod 22 away from the slideway 25 are kept on the same horizontal line, in the process that the fixed shell 19 is lifted, the limiting rods 27 slide on the second driving rod 22, so that the top of the fixed shell 19 always keeps horizontal.

[0050] The side of the fixed shell 19 close to the fixed block 23 is provided with two limiting grooves 28, each limiting groove 28 is arc-shaped and matched with the shaft puller clamping groove at the outer wall of the small eccentric sleeve of the eccentric shaft, so that the small eccentric sleeve of the eccentric shaft can be clamped in the limiting groove 28, and the two hydraulic cylinders 20 are arranged in the fixed shell 19, and each hydraulic cylinder 20 is fixedly connected to the inner wall of the fixed shell 19 away from the limiting groove 28, when the fixed shell 19 is erected and clamps the shaft puller clamping groove of the small eccentric sleeve, the end of the extension end of each hydraulic cylinder 20 is aligned with the positioning bearing in the small eccentric sleeve of the eccentric shaft and can be pushed out.

[0051] The lower fixed frame 2 is provided with a driving assembly, the driving assembly comprises a second hydraulic cylinder 20 and a lead screw 29, the second hydraulic motor 32 is fixedly connected to the lower fixed frame 2, the lead screw 29 is arranged below the fixed shell 19, and the moving rod 30 is rotatably connected between the two second driving rods 22 close to one end of the roller 26, one end of the lead screw 29 is fixedly connected to the output shaft of the second hydraulic motor 32, and the other end of the lead screw 29 is threadedly connected with the moving rod 30 and rotatably connected with the lower fixed frame 2.

[0052] The implementation of the embodiment is that, when the device is used, the eccentric shaft is disassembled according to the following steps:

[0053] S1: The operator holds the handle 10 on the fixed pin 8, so that the fixed pins 8 on the two large sleeve moving clamping plates 4 and the fixed pins 8 on the small sleeve moving clamping plates 6 are respectively close to the middle, the end of the fixed pin 8 is separated from the limiting block 9 on the slide rail 12, the large sleeve moving plate and the small sleeve moving plate are respectively moved away from the large sleeve fixed plate 3 and the small sleeve fixed plate 5, the eccentric shaft to be assembled is hoisted into the space between the large sleeve fixed plate 3 and the small sleeve fixed plate 5 and the large sleeve moving clamping plate 4 and the small sleeve moving clamping plate 6, the large sleeve moving clamping plate 4 and the small sleeve moving clamping plate 6 are respectively pushed towards the large sleeve fixed plate 3 and the small sleeve fixed plate 5, and the large sleeve eccentric and the small eccentric sleeve of the eccentric shaft are clamped, and the large sleeve moving clamping plate 4 and the small sleeve moving clamping plate 6 are limited by the fixed pin 8,

[0054] S2: The first hydraulic motor 31 is started, the first hydraulic motor 31 drives the worm 16 to rotate, the worm 16 drives the worm wheel 15 and the side plate 7 to rotate, and the clamped eccentric shaft is turned over by 180 degrees under the rotation of the side plate 7 and the worm wheel 15, and the operator removes the retaining ring and the gland close to the end of the positioning bearing of the small eccentric sleeve;

[0055] S3: The fixed pin 8 on the small sleeve moving clamping plate 6 is opened, the small sleeve moving clamping plate 6 is pulled open, the bolt connected between the small eccentric sleeve and the middle sleeve is disassembled, the small sleeve moving clamping plate 6 is pushed to reset, and the small sleeve moving clamping plate 6 is locked by the fixed pin 8;

[0056] S4: start the first hydraulic motor 31, the first hydraulic motor 31 drives the worm 16 to rotate, the worm 16 drives the worm wheel 15 and the side plate 7 to rotate, the clamped eccentric shaft is turned over 180 degrees again under the rotation of the side plate 7 and the worm wheel 15, the fixed pin 8 on the large set moving clamp plate 4 is opened, the bolt connecting the large eccentric sleeve and the intermediate sleeve is disassembled, and the large eccentric sleeve and the intermediate sleeve are taken off in turn;

[0057] S5: the operator stands up the fixed shell 19, starts the second hydraulic motor 32, the screw rod 29 rotates forward, the moving rod 30 gradually moves to the fixed block 23, the first drive rod 21 and the second drive rod 22 gradually lift the fixed shell 19 to a certain height, the operator clamps the limiting slot 28 on the fixed shell 19 to the pull shaft clamp slot on the small eccentric sleeve, starts the hydraulic cylinder 20 to push out the locating bearing in the small eccentric sleeve, then retracts the hydraulic cylinder 20 to reset, disengages the limiting slot 28 of the fixed shell 19 from the small eccentric sleeve and lays the fixed shell 19, and takes out the roll shaft;

[0058] S6: the fixed pin 8 on the small set moving clamp plate 6 is opened, the small set moving clamp plate 6 is pulled open, the small eccentric sleeve is taken off, and the disassembly is completed.

[0059] The device assembles the eccentric shaft according to the following steps:

[0060] S7: the large eccentric sleeve and the intermediate sleeve to be assembled are fixedly connected together in advance by bolts, the fixed pin 8 on the large set moving clamp plate 4 is opened, the large set moving clamp plate 4 is pulled open, the large eccentric sleeve and the intermediate sleeve are hoisted into the device by hoisting tools, the large eccentric sleeve is clamped by the first clamp slot 13 of the large set fixed plate 3 and the large set moving clamp plate 4, and the fixed pin 8 is locked, the first hydraulic motor 31 is started to rotate the worm wheel 15, the worm 16 and the side plate 7, the large eccentric sleeve and the intermediate sleeve are driven to turn over 180 degrees, the roll shaft is inverted and inserted into the large eccentric sleeve and the intermediate sleeve;

[0061] S8: the fixed pin 8 on the small set moving clamp plate 6 is opened, the small set moving clamp plate 6 is pulled open, the small eccentric sleeve is installed and fixedly connected to the intermediate sleeve by bolts;

[0062] S9: the second hydraulic motor 32 is started to drive the screw rod 29 to rotate forward, at this time, the moving rod 30 gradually approaches the fixed block 23, the first drive rod 21 and the second drive rod 22 drive the fixed shell 19 to lift, the horizontal top of the fixed shell 19 lifts the roll shaft in the large eccentric sleeve, the intermediate sleeve and the small eccentric sleeve by a certain distance, the distance is just suitable for installing the locating bearing and the damping washer at the end of the roll shaft, after the installation is completed, the gland is installed and pressed tightly, the second hydraulic motor 32 is started to drive the screw rod 29 to rotate reversely, so that the moving rod 30 moves away from the fixed block 23, the first drive rod 21 and the second drive rod 22 drive the fixed shell 19 to lower to restore the initial height;

[0063] S10: start the first hydraulic motor 31, the first hydraulic motor 31 drive the worm 16 rotation, the worm 16 drive the worm gear 15 and the side plate 7 rotation, the assembled eccentric shaft under the rotation of the side plate 7 and the worm gear 15 again turn over 180 degrees, with hoisting tool the whole hoist out of the device and hoist into the roll box of assembled eccentric shaft.

[0064] The above-mentioned is only the embodiment of the present application, and the common knowledge of specific structure and characteristics in the scheme is not described too much. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, which will not affect the effect and practicality of the patent. The protection scope claimed in the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A device for disassembling and assembling an eccentric shaft in a roll box, characterized in that, The device includes an upper fixed frame (1), a lower fixed frame (2), a clamping mechanism, a flipping mechanism, and a hydraulic shaft-pulling mechanism for disassembling the positioning bearing in the small eccentric sleeve. The upper fixed frame (1) is fixedly connected to the lower fixed frame (2). The clamping mechanism includes a large sleeve fixing assembly, a small sleeve fixing assembly, and a limiting assembly. The large sleeve fixing assembly includes a large sleeve fixing plate (3) and a large sleeve moving plate (4). The small sleeve fixing assembly includes a small sleeve fixing plate (5) and a small sleeve moving plate (6). The upper fixed frame (1) is provided with two side plates (7). The two side plates (7) are connected to the upper fixed frame (1) through the flipping mechanism. The large fixed plate (3) and the small fixed plate (5) are respectively fixed to the side plate (7). Two slide rails (12) are fixed between the two side plates (7). The large movable plate (4) and the small movable plate (6) are respectively slidably connected to the slide rails (12). Two limiting components for limiting the large movable plate (4) and the small movable plate (6) are connected on the slide rails (12). Two first slots (13) are respectively opened on the large fixed plate (3) and the large movable plate (4). Two second slots (14) are respectively opened on the small fixed plate (5) and the small movable plate (6). The flipping mechanism includes two worm gears (15) and two fixed seats (17). Each fixed seat (17) is bolted to the upper fixed frame (1). Each side plate (7) is rotatably connected to the fixed seat (17) by a rotating shaft (24). Each worm gear (15) is fixedly sleeved on the rotating shaft (24) and fixedly connected to the side plate (7). One of the worm gears (15) is engaged with a worm (16). The upper fixed frame (1) is fixedly connected to a first hydraulic motor (31) and a connecting ring (18). The worm (16) is rotatably connected in the connecting ring (18). The worm (16) is fixedly connected to the output shaft of the first hydraulic motor (31).

2. The device for disassembling and assembling the eccentric shaft in a roll box according to claim 1, characterized in that, Each of the limiting components includes two fixing pins (8) and two limiting blocks (9). Each limiting block (9) is fixedly connected to the slide rail (12). The large set of movable plates (4) and the small set of movable plates (6) are respectively fixedly connected to support blocks (11). Each fixing pin (8) slides through the support block (11) and extends toward the limiting block (9).

3. The device for disassembling and assembling the eccentric shaft in a roll box according to claim 2, characterized in that, The hydraulic shaft pulling mechanism includes a fixed housing (19), two hydraulic cylinders (20), and a lifting unit for adjusting the height of the fixed housing (19). The fixed housing (19) has two limiting grooves (28). Each hydraulic cylinder (20) is fixedly connected inside the fixed housing (19). The lifting unit includes two first drive rods (21) and two rollers (26). Each first drive rod (21) is hinged to a second drive rod (22). The bottom ends of the lower fixed frame (2) are respectively fixed on both sides. The slide rail (25) and the fixing block (23) are connected. The two ends of each first drive rod (21) are respectively hinged to the side wall of the fixing block (23) and the fixing housing (19). The side of the second drive rod (22) near the slide rail (25) is rotatably connected to the roller (26). Each roller (26) is rotatably connected to the slide rail (25). A moving rod (30) is rotatably connected between the two rollers (26). The lower fixing frame (2) is provided with a drive assembly for driving the moving rod (30) to move.

4. The device for disassembling and assembling the eccentric shaft in a roll box according to claim 3, characterized in that, The drive assembly includes a second hydraulic motor (32) and a lead screw (29). The second hydraulic motor (32) is fixedly connected to the lower fixed frame (2). One end of the lead screw (29) is fixedly connected to the second hydraulic motor (32), and the other end of the lead screw (29) is threadedly connected to the moving rod (30) and rotatably connected to the lower fixed frame (2).

5. The device for disassembling and assembling the eccentric shaft in a roll box according to claim 4, characterized in that, Each of the first card slot (13) and the second card slot (14) is provided with a nylon gasket.

6. The device for disassembling and assembling the eccentric shaft in a roll box according to claim 5, characterized in that, Each of the fixed pins (8) has a handle (10) fixed to the end away from the side plate (7).

7. The device for disassembling and assembling the eccentric shaft in a roll box according to claim 6, characterized in that, Two limiting rods (27) are fixedly attached to the fixed housing (19). Each limiting rod (27) overlaps the second driving rod (22). The ends of the first driving rod (21) and the second driving rod (22) away from the slide (25) are at the same horizontal height.

8. A method of using the device for disassembling and assembling the eccentric shaft in a roll box according to claim 7, characterized in that, The disassembly method for the eccentric shaft is as follows: S1: Open the fixing pin (8), pull the large sleeve moving plate (4) and the small sleeve moving plate (6) away from the large sleeve fixing plate (3) and the small sleeve fixing plate (5) respectively, and put the eccentric shaft to be disassembled into the first slot (13) and the second slot (14) using the hoisting tool. Use the large sleeve moving plate (4) and the large sleeve fixing plate (3) to clamp the large eccentric sleeve, use the small sleeve moving plate (6) and the small sleeve fixing plate (5) to clamp the small eccentric sleeve, and lock the fixing pin (8). S2: The worm wheel (15), worm (16) and side plate (7) are rotated by the drive device, and the clamped eccentric shaft is rotated 180 degrees. The operator removes the retaining ring and pressure cap of the small eccentric sleeve near the positioning bearing. S3: Open the fixing pin (8) of the limiting small sleeve moving plate (6), remove the bolt between the small eccentric sleeve and the intermediate sleeve, and then re-lock the small sleeve moving plate (6) through the fixing pin (8); S4: Drive the worm wheel (15), worm (16) and side plate (7) to rotate, rotate the clamped eccentric shaft 180 degrees again, so that the large eccentric sleeve returns to the initial position, remove the bolts between the large eccentric sleeve and the intermediate sleeve, and remove the large eccentric sleeve and the intermediate sleeve in sequence. S5: Erect the fixed housing (19), rotate the screw (29) through the drive device so that the moving rod (30) gradually approaches the fixed block (23), and gradually lift the fixed housing (19) through the first drive rod (21) and the second drive rod (22). Use the limiting groove (28) to lock the shaft puller groove on the small eccentric sleeve, drive the hydraulic cylinder (20) to push out the positioning bearing in the small eccentric sleeve, and then reset the hydraulic cylinder (20) to remove the limiting groove (28) of the fixed housing (19) from the small eccentric sleeve and flatten the fixed housing (19) to take out the roller. S6: Open the fixing pin (8), pull open the small sleeve moving plate (6) and remove the small eccentric sleeve to complete the disassembly; The assembly method for the eccentric shaft is as follows: S7: Beforehand, fix the large eccentric sleeve and intermediate sleeve to be assembled by bolt connection, open the fixing pin (8) and pull open the large sleeve moving plate (4) and the small sleeve moving plate (6), lift the large eccentric sleeve and intermediate sleeve into this device by hoisting tool, use the large sleeve moving plate (4) and the first slot (13) of the large sleeve fixing plate (3) to clamp the large eccentric sleeve, and lock the fixing pin (8) near the large sleeve moving plate (4), start the first hydraulic motor (31) to make the worm wheel (15), worm (16) and side plate (7) rotate, flip the clamped large eccentric sleeve and intermediate sleeve 180 degrees, and insert the roller into the large eccentric sleeve and intermediate sleeve; S8: Open the fixing pin (8) near the small eccentric sleeve, pull open the small sleeve moving plate (6), put in the small eccentric sleeve and connect and fix the small eccentric sleeve and the intermediate sleeve with bolts, and use the second slot (14) of the small sleeve moving plate (6) and the small sleeve fixing plate (5) to clamp the small eccentric sleeve. S9: Start the second hydraulic motor (32) to drive the screw (29) to rotate in the forward direction, so that the moving rod (30) gradually approaches the fixed block (23). The fixed housing (19) is gradually lifted by the first drive rod (21) and the second drive rod (22). The top of the fixed housing (19) lifts the roller. The lifting distance needs to be just enough to install the positioning bearing and damping pad at the end of the roller. After the positioning bearing and damping pad are installed, the pressure cover is installed and the pressure cover is tightened. The screw (29) is rotated in the reverse direction by the drive device, so that the fixed housing (19) gradually descends and returns to the initial height. S10: The worm wheel (15), worm (16) and side plate (7) are rotated by the drive device, and the clamped eccentric shaft is rotated 180 degrees again. The assembled eccentric shaft is lifted out of the device and into the roller box by the hoisting tool.

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