A disassembling and assembling tool and method for the AWC hydraulic cylinder of a vertical roll mill

Abstract

The present invention relates to a disassembly and assembly tool and method for an AWC hydraulic cylinder of a vertical roll mill. Among them, the disassembly and assembly tool for the AWC hydraulic cylinder of the vertical roll mill includes a lifting sleeve, a disassembly trolley, upper and lower lifting ring screws on the inner side of the frame, and front and rear sling assemblies for the AWC hydraulic cylinder. The disassembly trolley includes a frame, wheels, a ratchet hoist, a lower hand hoist, and an upper hand hoist. The lifting sleeve includes a sleeve and a shackle. One end of the sleeve is provided with a fixed mounting sleeve for the piston rod, and the other end is fixedly connected to the fixed mounting plate of the lifting sleeve. Two lower lifting ring screws on the inner side of the frame and two upper lifting ring screws on the inner side of the frame are respectively installed on the lower and upper parts of the inner side wall of the frame on one side of the piston rod of the AWC hydraulic cylinder. The two lower lifting ring screws on the inner side of the frame are connected to the two lower hand hoists, and the two upper lifting ring screws on the inner side of the frame are connected to the two upper hand hoists. The present invention disassembles and assembles the AWC hydraulic cylinder through the mutual cooperation of the disassembly trolley and the lifting sleeve.

Description

Technical Field

[0001] The present invention relates to the technical field of disassembly and assembly of vertical roll mill components, and particularly to a disassembly and assembly tool and method for an AWC hydraulic cylinder of a vertical roll mill. Background Art

[0002] Due to the large weight, large volume of the AWC hydraulic cylinder of the vertical roll mill and the narrow installation and disassembly space, it is extremely inconvenient to install or disassemble the AWC hydraulic cylinder; the existing disassembly and assembly tools for replacing the AWC hydraulic cylinder have a complex structure, and each replacement is time-consuming and laborious. The existing technical solution for replacing and disassembling the AWC hydraulic cylinder is as follows: First, a jack or a long sleeve is installed between two relatively arranged AWC hydraulic cylinders on both sides, so as to jack out the AWC hydraulic cylinder from the frame through the jack or the long sleeve. Subsequently, through the slide rail pulley assembly and the chain block installed on the frame, the chain block is used to drag the pulley to pull out the AWC hydraulic cylinder to complete the disassembly. However, this technical solution has the following technical defects: First, during the process of jacking out the AWC hydraulic cylinder by the jack or the long sleeve, it is necessary to use another AWC hydraulic cylinder arranged on the opposite side as the support point of the jack or the long sleeve. When one AWC hydraulic cylinder is disassembled, when continuing to disassemble the other AWC hydraulic cylinder on the opposite side, it will be impossible to disassemble the other AWC hydraulic cylinder through the jack or the long sleeve due to the lack of a support point for the jack or the long sleeve; Second, in order to provide a suitable fixed connection position for the slide rail, it is necessary to lengthen the upper part of the frame, which will increase the design requirements of the frame and the design cost of the frame.

[0003] The Chinese invention patent with the publication number of CN110682074A relates to a dismounting tool for a vertical roll AWC hydraulic cylinder of a hot rolling line, including two slide rails distributed along the outer surface of the rolling mill housing. The slide rails are provided with slide ways, and at least two pulley assemblies are installed on each slide way. Under the action of an external pulling force, the pulley assemblies can slide along the extension direction of the slide ways to pull the AWC hydraulic cylinder; a first chain block for pulling the pulley assemblies is installed at the front end of the slide rail far from the AWC hydraulic cylinder. During the maintenance operation, the first chain block is used to pull the front pulley assembly, and at the same time drive a set of rear pulley assemblies to move, pull the AWC hydraulic cylinder out of the position affecting the rolling mill housing, and finally use a crane to lift the AWC hydraulic cylinder away. The above-mentioned dismounting tool for the vertical roll AWC hydraulic cylinder of the hot rolling line does not require shutdown for maintenance operations, shortens the maintenance time, improves the maintenance efficiency, and saves the production cost. However, this invention still needs another AWC hydraulic cylinder arranged on the opposite side as the support point of the electro-hydraulic jack during the process of disassembling the AWC hydraulic cylinder, and there is still the technical defect that it is impossible to continue disassembling the other AWC hydraulic cylinder on the opposite side after one AWC hydraulic cylinder is disassembled. Summary of the Invention

[0004] The technical problem solved by the present invention is that since the existing AWC hydraulic cylinder removal tooling does not provide an independent support device for pushing the AWC hydraulic cylinder, when removing two corresponding AWC hydraulic cylinders on the same horizontal line, only one of the AWC hydraulic cylinders can be used as the support point for removing the other AWC hydraulic cylinder, resulting in the adverse consequence that the other AWC hydraulic cylinder cannot be removed due to the lack of a support point.

[0005] To solve the above technical problem, a disassembling and assembling tool for the AWC hydraulic cylinder of a vertical roll mill provided by the present invention includes a lifting sleeve, a disassembly trolley, lower inner-rack lifting screws, upper inner-rack lifting screws, a rear hanger assembly for the AWC hydraulic cylinder, and a front hanger assembly for the AWC hydraulic cylinder. The disassembly trolley is placed on one side of the piston rod of the AWC hydraulic cylinder. The disassembly trolley includes a frame, wheels, a ratchet hoist, a lower hand hoist, and an upper hand hoist. The frame has a rectangular shape with four corner columns. On the outer sides of the upper ends of the two ends of the rectangular four-corner columns, two wheel mounting supports are respectively installed. At both ends of the two wheel mounting supports, two of the wheels are respectively installed. The wheels are placed on the upper slide plate of the rack. On the inner sides of the lower parts of the rectangular four-corner columns, two of the lower hand hoists are symmetrically arranged. A lifting sleeve fixed mounting plate is installed at the lower rear side, and a support plate is installed at the top. On both sides of the support plate, two of the upper hand hoists are symmetrically arranged, and the ratchet hoist is installed in the middle. The lifting sleeve includes a sleeve and a shackle. One end of the sleeve is provided with a piston rod fixed mounting sleeve, and the other end is fixedly connected to the lifting sleeve fixed mounting plate. The shackle is installed at the top of the sleeve near one end of the disassembly trolley. On the lower part and the upper part of the inner side wall of the rack on one side of the piston rod of the AWC hydraulic cylinder, two of the lower inner-rack lifting screws and two of the upper inner-rack lifting screws are respectively installed. The two lower inner-rack lifting screws are connected to the two lower hand hoists, and the two upper inner-rack lifting screws are connected to the two upper hand hoists. The rear hanger assembly for the AWC hydraulic cylinder is arranged outside the rack and installed at the rear of the AWC hydraulic cylinder. The front hanger assembly for the AWC hydraulic cylinder is arranged outside the rack and installed at the front of the AWC hydraulic cylinder.

[0006] In view of the technical defect that the existing AWC hydraulic cylinder disassembly tooling does not have an independent support device for pushing the AWC hydraulic cylinder, the present invention realizes the disassembly of the AWC hydraulic cylinder by setting an independent support device for pushing the AWC hydraulic cylinder, namely a disassembly trolley, and cooperating with a lifting sleeve. Specifically, taking the disassembly of the lower AWC hydraulic cylinder as an example, the present invention fixes one end of the lifting sleeve on the head of the piston rod of the lower AWC hydraulic cylinder in a sleeved manner and fixes the other end on the disassembly trolley, so that the lower AWC hydraulic cylinder, the lifting sleeve and the disassembly trolley are connected in sequence to form an integral structure. Then, the ratchet hoist on the disassembly trolley hooks the lifting sleeve, and the lower hand chain hoist is pulled to drive the lifting sleeve to push the lower AWC hydraulic cylinder forward until it is jacked out of the frame. Finally, the lower AWC hydraulic cylinder is lifted off the vertical roll mill by the rear sling assembly of the AWC hydraulic cylinder and the front sling assembly of the AWC hydraulic cylinder.

[0007] The AWC is the abbreviation of automatic width control, which refers to automatic width control.

[0008] Further, the rear sling assembly of the AWC hydraulic cylinder includes rear lifting eye bolts of the lower AWC hydraulic cylinder, a rear lifting beam of the lower AWC hydraulic cylinder, rear lifting eye bolts of the upper AWC hydraulic cylinder and a rear lifting beam of the upper AWC hydraulic cylinder. The rear lifting eye bolts of the lower AWC hydraulic cylinder are installed at the rear of the lower AWC hydraulic cylinder, and the rear lifting eye bolts of the lower AWC hydraulic cylinder are connected to the rear lifting beam of the lower AWC hydraulic cylinder. The rear lifting eye bolts of the upper AWC hydraulic cylinder are installed at the rear of the upper AWC hydraulic cylinder, and the rear lifting eye bolts of the upper AWC hydraulic cylinder are connected to the rear lifting beam of the upper AWC hydraulic cylinder.

[0009] Further, the front sling assembly of the AWC hydraulic cylinder includes front lifting eye bolts of the lower AWC hydraulic cylinder, a front lifting beam of the lower AWC hydraulic cylinder, front lifting eye bolts of the upper AWC hydraulic cylinder and a front lifting beam of the upper AWC hydraulic cylinder. The front lifting eye bolts of the lower AWC hydraulic cylinder are installed at the front of the lower AWC hydraulic cylinder, and the front lifting eye bolts of the lower AWC hydraulic cylinder are connected to the front lifting beam of the lower AWC hydraulic cylinder. The front lifting eye bolts of the upper AWC hydraulic cylinder are installed at the front of the upper AWC hydraulic cylinder, and the front lifting eye bolts of the upper AWC hydraulic cylinder are connected to the front lifting beam of the upper AWC hydraulic cylinder.

[0010] Further, the wheel includes a wheel axle, a bushing, a wheel, a baffle, a first oil cup and a first fastener. The rear part of the wheel axle is axially sleeved in the inner hole of the wheel mounting support seat, and the front part is sleeved with the bushing. The wheel is sleeved outside the bushing. The baffle is fixedly installed on the front end face of the wheel axle through the first fastener. A first oil cup mounting hole is formed in the baffle, and the first oil cup is installed at the first oil cup mounting hole. A first lubricating through hole is radially formed in the front part of the wheel axle, and a second lubricating through hole with both ends penetrating is radially formed in the bushing. The position of the first lubricating through hole corresponds to that of the second lubricating through hole. A third lubricating blind hole is horizontally formed in the front end face of the wheel axle, and the position of the third lubricating blind hole corresponds to that of the first oil cup mounting hole. The third lubricating blind hole is communicated with the first lubricating through hole.

[0011] Further, the ratchet hoist includes two guide wheels, two bearing seats, a guide wheel axle, two second oil cups, two shaft end baffles and two second fasteners. The two bearing seats are fixedly installed in the middle of the support plate through the two second fasteners. Guide wheel axle mounting holes are formed at corresponding positions on the upper parts of the two bearing seats. The guide wheel axle is installed in the two guide wheel axle mounting holes. Shaft end baffle mounting grooves are formed on the two end faces of the guide wheel axle, and the two shaft end baffles are sleeved in the two shaft end baffle mounting grooves. Two guide wheels are arranged side by side in the middle of the guide wheel axle. Second oil cup mounting blind holes are axially formed in the middle of the two end faces of the guide wheel axle, and the two second oil cups are installed at the two second oil cup mounting blind holes. The two second oil cup mounting blind holes extend to the middle position of the guide wheel axle.

[0012] Further, the lower hand hoist adopts any one of a round hand hoist, a triangular hand hoist, a K-shaped hand hoist, a rhombic hand hoist, a V-shaped hand hoist and a T-shaped hand hoist.

[0013] Further, the upper hand hoist adopts any one of a round hand hoist, a triangular hand hoist, a K-shaped hand hoist, a rhombic hand hoist, a V-shaped hand hoist and a T-shaped hand hoist.

[0014] Further, the lower hand hoist is replaced by a lower electric hoist.

[0015] Further, the upper hand hoist is replaced by an upper electric hoist.

[0016] Further, both the lower lifting ring screw and the upper lifting ring screw on the inner side of the frame are subjected to galvanized passivation or chrome plating surface treatment.

[0017] To solve the above technical problems, the present invention also provides a method for disassembling and assembling the AWC hydraulic cylinder of a vertical rolling mill. Based on any one of the above-preferred disassembling and assembling tools for the AWC hydraulic cylinder of a vertical rolling mill, the method includes the following steps:

[0018] Before removing the lower AWC hydraulic cylinder, first move the roll bearing housing and the balance bracket out of the frame window, contract the piston rods of the lower AWC hydraulic cylinder and the balance cylinder to their extreme positions, and remove the hydraulic and electrical connectors and the cylinder head of the lower AWC hydraulic cylinder, so that the piston rod of the lower AWC hydraulic cylinder is exposed;

[0019] Fix and install the lower inner frame lifting ring screw at the lower part inside the frame;

[0020] Lift the disassembly cart and the lifting sleeve into the frame window and move them to the disassembly position;

[0021] Install the piston rod fixing sleeve at one end of the lifting sleeve on the piston rod part of the lower AWC hydraulic cylinder and fix it with bolts, and fix the other end to the fixed mounting plate of the lifting sleeve with bolts;

[0022] Hook the lower manual hoist on the disassembly cart to the lower inner frame lifting ring screw, and hook the ratchet hoist to the lifting sleeve;

[0023] Fix and install the rear lifting ring screw of the lower AWC hydraulic cylinder at the rear of the lower AWC hydraulic cylinder, and hook the rear lifting beam of the lower AWC hydraulic cylinder to the rear lifting ring screw of the lower AWC hydraulic cylinder;

[0024] Loosen the connection bolts between the lower AWC hydraulic cylinder and the frame, pull the lower manual hoist on the disassembly cart, and push the lower AWC hydraulic cylinder out of the frame window to a certain distance through the lifting sleeve;

[0025] Fix and install the front lifting ring screw of the lower AWC hydraulic cylinder at the front of the lower AWC hydraulic cylinder, and hook the front lifting beam of the lower AWC hydraulic cylinder to the front lifting ring screw of the lower AWC hydraulic cylinder;

[0026] Loosen the lifting sleeve, and lift the lower AWC hydraulic cylinder away from the vertical roll mill through the rear lifting beam of the lower AWC hydraulic cylinder and the front lifting beam of the lower AWC hydraulic cylinder.

[0027] The reverse process of each of the above steps is the installation step of the lower AWC hydraulic cylinder.

[0028] The frame window refers to the closed force-bearing frame surrounded by the rolling mill frame to bear the rolling force. Description of the Drawings

[0029] Figure 1 It is a schematic structural diagram of a preferred embodiment of the present invention, which shows a schematic diagram of the state before the lifting sleeve pushes the lower AWC hydraulic cylinder.

[0030] Figure 2 is Figure 1 Schematic diagram of the state after the lifting sleeve ejects the lower AWC hydraulic cylinder in the illustrated embodiment.

[0031] Figure 3 is Figure 2 Schematic diagram of the structure in the A direction in the illustrated embodiment.

[0032] Figure 4 is Figure 2 Schematic diagram of the connection relationship between the lifting beam at the rear of the lower AWC hydraulic cylinder and the lifting beam at the front of the lower AWC hydraulic cylinder and the rear and front parts of the lower AWC hydraulic cylinder respectively in the illustrated embodiment.

[0033] Figure 5 Schematic diagram of the structure of another preferred embodiment of the present invention, which shows the state before the lifting sleeve pushes the upper AWC hydraulic cylinder.

[0034] Figure 6 is Figure 5 Schematic diagram of the state after the lifting sleeve ejects the upper AWC hydraulic cylinder in the illustrated embodiment.

[0035] Figure 7 is Figure 6 Schematic diagram of the structure in the B direction in the illustrated embodiment.

[0036] Figure 8 is Figure 6 Schematic diagram of the connection relationship between the lifting beam at the rear of the upper AWC hydraulic cylinder and the lifting beam at the front of the upper AWC hydraulic cylinder and the rear and front parts of the upper AWC hydraulic cylinder respectively in the illustrated embodiment.

[0037] Figure 9 is Figure 1 or Figure 5 Stereogram of a preferred embodiment of the disassembly trolley.

[0038] Figure 10 is Figure 9 Front view of the illustrated embodiment.

[0039] Figure 11 is Figure 9 Right view of the illustrated embodiment.

[0040] Figure 12 Cross-sectional view of the wheel in the C-C direction in the embodiment shown in 10.

[0041] Figure 13 is Figure 11 Cross-sectional view of the ratchet hoist in the D-D direction in the illustrated embodiment.

[0042] Figure 14 is Figure 1 or Figure 5Front view of a preferred embodiment of the lifting sleeve

[0043] Figure 15 is Figure 14 Cross-sectional view taken along line E-E in the illustrated embodiment.

[0044] Figure 16 is Figure 14 Left view of the illustrated embodiment.

[0045] Figure 17 is Figure 14 Right view of the illustrated embodiment.

[0046] Description of reference numerals:

[0047] 1 - Lifting sleeve; 1.1 - Sleeve; 1.2 - Shackle; 2 - Lower AWC hydraulic cylinder; 3 - Demolition trolley; 3.1 - Frame; 3.2 - Wheels; 3.2.1 - Axle; 3.2.2 - Bush; 3.2.3 - Wheels; 3.2.4 - Baffle; 3.2.5 - First oil cup; 3.2.6 - First fastener; 3.3 - Ratchet hoist; 3.3.1 - Guide wheel; 3.3.2 - Bearing seat; 3.3.3 - Guide wheel shaft; 3.3.4 - Second oil cup; 3.3.5 - Axle end baffle; 3.3.6 - Second fastener; 3.4 - Lower hand chain hoist; 3.5 - Upper hand chain hoist; 4 - Upper AWC hydraulic cylinder; 5 - Frame; 6 - Lower inner frame lifting ring screw; 7 - Rear lifting ring screw of lower AWC hydraulic cylinder; 8 - Rear lifting beam of lower AWC hydraulic cylinder; 9 - Balance cylinder; 10 - Front lifting ring screw of lower AWC hydraulic cylinder; 11 - Front lifting beam of lower AWC hydraulic cylinder; 12 - Main motor support; 13 - Shaft lifting device; 14 - Rolling center line; 15 - Upper inner frame lifting ring screw; 16 - Rear lifting beam of upper AWC hydraulic cylinder; 17 - Rear lifting ring screw of upper AWC hydraulic cylinder; 18 - Front lifting beam of upper AWC hydraulic cylinder; 19 - Front lifting ring screw of upper AWC hydraulic cylinder. Detailed implementation manners

[0048] To make the above objects, features and advantages of the present invention more apparent and understandable, the following detailed description of specific embodiments of the present invention will be given with reference to the accompanying drawings.

[0049] In the description of the present invention, it should be noted that the term nouns in each embodiment, such as "upper", "lower", "front", "rear", "left", "right", etc., which indicate directions, are only used to simplify the description of the positional relationship based on the drawings of the specification, and do not represent that the indicated elements and devices, etc. must be operated according to the specific directions and limited operations, methods, and structures described in the specification. Such directional nouns do not constitute a limitation to the present invention.

[0050] An AWC hydraulic cylinder disassembly and assembly tool provided by an embodiment of the present invention is as follows Figures 1 - 11 and Figures 14 - 17 shown, which includes a lifting sleeve 1, a disassembly trolley 3, a lower inner-ring screw 6 of the frame, an upper inner-ring screw 15 of the frame, an AWC hydraulic cylinder rear sling assembly, and an AWC hydraulic cylinder front sling assembly. The disassembly trolley 3 is placed on one side of the AWC hydraulic cylinder piston rod. The disassembly trolley 3 includes a frame 3.1, wheels 3.2, a ratchet hoist 3.3, a lower hand-operated hoist 3.4, and an upper hand-operated hoist 3.5. The outer shape of the frame 3.1 is a rectangular four-corner pillar. Two wheel mounting supports are respectively installed on the outer sides of the upper ends of the rectangular four-corner pillars. Two of the wheels 3.2 are respectively installed at both ends of the two wheel mounting supports. The wheels 3.2 are placed on the upper slide plate of the frame. Two of the lower hand-operated hoists 3.4 are symmetrically arranged on the inner sides of the lower part of the rectangular four-corner pillar. A lifting sleeve fixed mounting plate is installed at the lower rear side, and a support plate is installed at the top. Two of the upper hand-operated hoists 3.5 are symmetrically arranged on both sides of the support plate, and the ratchet hoist 3.3 is installed in the middle. The lifting sleeve 1 includes a sleeve 1.1 and a shackle 1.2. One end of the sleeve 1.1 is provided with a piston rod fixed mounting sleeve, and the other end is fixedly connected to the lifting sleeve fixed mounting plate. The shackle 1.2 is installed at the top of one end of the sleeve 1.1 close to the disassembly trolley 3. Two of the lower inner-ring screws 6 of the frame are respectively installed on the lower and upper parts of the inner side wall of the frame 5 on one side of the AWC hydraulic cylinder piston rod. Two of the lower inner-ring screws 6 of the frame are connected to the two lower hand-operated hoists 3.4. Two of the upper inner-ring screws 15 of the frame are connected to the two upper hand-operated hoists 3.5. The AWC hydraulic cylinder rear sling assembly is arranged outside the frame 5 and installed at the rear of the AWC hydraulic cylinder. The AWC hydraulic cylinder front sling assembly is arranged outside the frame 5 and installed at the front of the AWC hydraulic cylinder.

[0051] In this embodiment, by setting up an independent support device for pushing the AWC hydraulic cylinder, that is, the disassembly trolley 3, and cooperating with the lifting sleeve 1, the removal of the AWC hydraulic cylinder is realized. Specifically, taking the removal of the lower AWC hydraulic cylinder 2 as an example, in the present invention, one end of the lifting sleeve 1 is fixedly sleeved on the piston rod head of the lower AWC hydraulic cylinder 2, and the other end is fixedly installed on the disassembly trolley 3, so that the lower AWC hydraulic cylinder 2, the lifting sleeve 1, and the disassembly trolley 3 are connected in sequence to form an integral structure. Then, the ratchet hoist 3.3 on the disassembly trolley 3 is hooked on the lifting sleeve 1, and the lifting sleeve 1 is driven to push the lower AWC hydraulic cylinder 2 forward by pulling the lower hand-operated hoist 3.4 until it is ejected from the frame 5. Finally, the lower AWC hydraulic cylinder 2 is lifted off the vertical roll mill by the AWC hydraulic cylinder rear sling assembly and the AWC hydraulic cylinder front sling assembly.

[0052] Optionally, asFigures 1 - 8 As shown, the rear sling assembly of the AWC hydraulic cylinder includes a lower rear eyebolt 7 of the AWC hydraulic cylinder, a lower rear lifting beam 8 of the AWC hydraulic cylinder, an upper rear eyebolt 17 of the AWC hydraulic cylinder, and an upper rear lifting beam 16 of the AWC hydraulic cylinder. The lower rear eyebolt 7 of the AWC hydraulic cylinder is installed at the rear of the lower AWC hydraulic cylinder 2. The lower rear eyebolt 7 of the AWC hydraulic cylinder is connected to the lower rear lifting beam 8 of the AWC hydraulic cylinder. The upper rear eyebolt 17 of the AWC hydraulic cylinder is installed at the rear of the upper AWC hydraulic cylinder 4. The upper rear eyebolt 17 of the AWC hydraulic cylinder is connected to the upper rear lifting beam 16 of the AWC hydraulic cylinder.

[0053] Optionally, as Figure 2 , Figure 4 , Figure 6 and Figure 8 As shown, the front sling assembly of the AWC hydraulic cylinder includes a lower front eyebolt 10 of the AWC hydraulic cylinder, a lower front lifting beam 11 of the AWC hydraulic cylinder, an upper front eyebolt 19 of the AWC hydraulic cylinder, and an upper front lifting beam 18 of the AWC hydraulic cylinder. The lower front eyebolt 10 of the AWC hydraulic cylinder is installed at the front of the lower AWC hydraulic cylinder 2. The lower front eyebolt 10 of the AWC hydraulic cylinder is connected to the lower front lifting beam 11 of the AWC hydraulic cylinder. The upper front eyebolt 19 of the AWC hydraulic cylinder is installed at the front of the upper AWC hydraulic cylinder 4. The upper front eyebolt 19 of the AWC hydraulic cylinder is connected to the upper front lifting beam 18 of the AWC hydraulic cylinder.

[0054] Optionally, as Figures 9 - 12 As shown, the wheel 3.2 includes a wheel axle 3.2.1, a bushing 3.2.2, a wheel 3.2.3, a baffle 3.2.4, a first oil cup 3.2.5, and a first fastener 3.2.6. The rear part of the wheel axle 3.2.1 is axially sleeved in the inner hole of the wheel mounting support seat, and the bushing 3.2.2 is sleeved on the front part. The wheel 3.2.3 is sleeved outside the bushing 3.2.2. The baffle 3.2.4 is fixedly installed on the front end face of the wheel axle 3.2.1 through the first fastener 3.2.6. A first oil cup mounting hole is formed in the baffle 3.2.4, and the first oil cup 3.2.5 is installed at the first oil cup mounting hole. A first lubrication through hole is radially formed in the front part of the wheel axle 3.2.1, and a second lubrication through hole that penetrates at both ends is radially formed in the bushing 3.2.2. The position of the first lubrication through hole corresponds to that of the second lubrication through hole. A third lubrication blind hole is axially formed on the front end face of the wheel axle 3.2.1, and the position of the third lubrication blind hole corresponds to that of the first oil cup mounting hole. The third lubrication blind hole is communicated with the first lubrication through hole.

[0055] Optionally, as Figures 9 - 11 andFigure 13 As shown, the ratchet hoist 3.3 includes two guide wheels 3.3.1, two bearing seats 3.3.2, a guide wheel shaft 3.3.3, two second oil cups 3.3.4, two shaft end baffles 3.3.5, and two second fasteners 3.3.6. The two bearing seats 3.3.2 are fixedly installed in the middle of the support plate through the two second fasteners 3.3.6. Corresponding positions on the upper parts of the two bearing seats 3.3.2 are both provided with guide wheel shaft mounting holes. The guide wheel shaft 3.3.3 is installed in the two guide wheel shaft mounting holes. Shaft end baffle mounting grooves are opened on both end faces of the guide wheel shaft 3.3.3. The two shaft end baffles 3.3.5 are sleeved in the two shaft end baffle mounting grooves respectively. Two of the guide wheels 3.3.1 are installed side by side in the middle of the guide wheel shaft 3.3.3. Second oil cup mounting blind holes are axially opened in the middle of both end faces of the guide wheel shaft 3.3.3. The two second oil cups 3.3.4 are installed at the two second oil cup mounting blind holes respectively. The two second oil cup mounting blind holes both extend to the middle position of the guide wheel shaft 3.3.3.

[0056] Optionally, as Figure 9 shown, the lower manual hoist 3.4 adopts any one of a circular manual hoist, a triangular manual hoist, a K-shaped manual hoist, a diamond-shaped manual hoist, a V-shaped manual hoist, and a T-shaped manual hoist.

[0057] Optionally, as Figure 9 shown, the upper manual hoist 3.5 adopts any one of a circular manual hoist, a triangular manual hoist, a K-shaped manual hoist, a diamond-shaped manual hoist, a V-shaped manual hoist, and a T-shaped manual hoist.

[0058] Optionally, as Figure 9 shown, the lower manual hoist 3.4 is replaced with a lower electric hoist.

[0059] Optionally, as Figure 9 shown, the upper manual hoist 3.5 is replaced with an upper electric hoist.

[0060] Optionally, as Figure 1 , Figure 2 and Figure 5 shown, galvanized passivation or chrome plating surface treatment is performed on both the lower lifting eye bolt 6 and the upper lifting eye bolt 15 on the inner side of the frame.

[0061] The embodiment of the present invention also provides a method for disassembling and assembling the AWC hydraulic cylinder of a vertical roll mill. Based on any of the above-preferred AWC hydraulic cylinder disassembly and assembly tools for a vertical roll mill, as Figure 1 and Figure 2 shown, taking the disassembly of the lower AWC hydraulic cylinder 2 as an example only, the method includes the following steps:

[0062] Before removing the lower AWC hydraulic cylinder 2, first move the roll bearing housing and the balance bracket out of the frame window, retract the piston rods of the lower AWC hydraulic cylinder 2 and the balance cylinder 9 to their extreme positions, and remove the hydraulic and electrical connectors and the cylinder head of the lower AWC hydraulic cylinder 2, so that the piston rod of the lower AWC hydraulic cylinder 2 is exposed;

[0063] Fix and install the inner lower lifting ring screws 6 at the inner lower part of the frame 5;

[0064] Lift the disassembly trolley 3 and the lifting sleeve 1 into the frame window and move them to the disassembly position;

[0065] Install the piston rod fixing sleeve at one end of the lifting sleeve 1 on the piston rod part of the lower AWC hydraulic cylinder 2 and fix it with bolts, and fix the other end to the lifting sleeve fixing plate with bolts;

[0066] Hook the lower chain block 3.4 on the disassembly trolley 3 to the inner lower lifting ring screw 6 of the frame, and hang the ratchet hoist 3.3 on the lifting sleeve 1;

[0067] Fix and install the rear lifting ring screw 7 of the lower AWC hydraulic cylinder at the rear of the lower AWC hydraulic cylinder 2, and hook the rear lifting beam 8 of the lower AWC hydraulic cylinder to the rear lifting ring screw 7 of the lower AWC hydraulic cylinder;

[0068] Loosen the connection bolts between the lower AWC hydraulic cylinder 2 and the frame 5, pull the lower chain block 3.4 on the disassembly trolley 3, and push the lower AWC hydraulic cylinder 2 out of the frame window to a certain distance through the lifting sleeve 1;

[0069] Fix and install the front lifting ring screw 10 of the lower AWC hydraulic cylinder at the front of the lower AWC hydraulic cylinder 2, and hook the front lifting beam 11 of the lower AWC hydraulic cylinder to the front lifting ring screw 10 of the lower AWC hydraulic cylinder;

[0070] Loosen the lifting sleeve 1, and lift the lower AWC hydraulic cylinder off the vertical roll mill through the rear lifting beam 8 of the lower AWC hydraulic cylinder and the front lifting beam 11 of the lower AWC hydraulic cylinder.

[0071] The reverse process of each of the above steps is the installation step of the lower AWC hydraulic cylinder 2.

[0072] Although the present invention is disclosed as the above preferred embodiments, the present invention is not limited thereto. Those skilled in the art can make various permutations and combinations of the above preferred embodiments without departing from the spirit and scope of the present invention and form a complete technical solution. The protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A disassembling and assembling tool for the AWC hydraulic cylinder of a vertical roll mill, characterized in that It includes a lifting sleeve (1), a disassembly trolley (3), inner-lower lifting ring screws (6) of the frame, inner-upper lifting ring screws (15) of the frame, a rear sling assembly of the AWC hydraulic cylinder, and a front sling assembly of the AWC hydraulic cylinder. The disassembly trolley (3) is placed on one side of the piston rod of the AWC hydraulic cylinder. The disassembly trolley (3) includes a vehicle frame (3.1), wheels (3.2), a ratchet hoist (3.3), a lower hand hoist (3.4), and an upper hand hoist (3.5). The outer shape of the vehicle frame (3.1) is a rectangular four-corner pillar. On the outer sides of the upper ends of the two sides of the rectangular four-corner pillar, two wheel mounting supports are respectively installed. At both ends of the two wheel mounting supports, the two wheels (3.2) are respectively installed. The wheels (3.2) are placed on the upper slide plate of the frame. On the inner sides of the lower parts of the rectangular four-corner pillar, the two lower hand hoists (3.4) are symmetrically arranged. A fixed mounting plate for the lifting sleeve is installed at the rear of the lower part, and a support plate is installed at the top. On both sides of the support plate, the two upper hand hoists (3.5) are symmetrically arranged, and the ratchet hoist (3.3) is installed in the middle. The lifting sleeve (1) includes a sleeve (1.1) and a shackle (1.2). One end of the sleeve (1.1) is provided with a fixed mounting sleeve for the piston rod, and the other end is fixedly connected to the fixed mounting plate of the lifting sleeve. The shackle (1.2) is installed at the top of one end of the sleeve (1.1) close to the disassembly trolley (3). On the lower and upper inner side walls of the frame (5) on one side of the piston rod of the AWC hydraulic cylinder, the two inner-lower lifting ring screws (6) of the frame and the two inner-upper lifting ring screws (15) of the frame are respectively installed. The two inner-lower lifting ring screws (6) of the frame are connected to the two lower hand hoists (3.4), and the two inner-upper lifting ring screws (15) of the frame are connected to the two upper hand hoists (3.5). The rear sling assembly of the AWC hydraulic cylinder is arranged outside the frame (5) and installed at the rear of the AWC hydraulic cylinder. The front sling assembly of the AWC hydraulic cylinder is arranged outside the frame (5) and installed at the front of the AWC hydraulic cylinder.

2. The disassembling and assembling tool for the AWC hydraulic cylinder of the vertical roll mill according to claim 1, wherein The rear sling assembly of the AWC hydraulic cylinder includes a lower rear lifting ring screw (7) of the AWC hydraulic cylinder, a lower rear lifting beam (8) of the AWC hydraulic cylinder, an upper rear lifting ring screw (17) of the AWC hydraulic cylinder, and an upper rear lifting beam (16) of the AWC hydraulic cylinder. The lower rear lifting ring screw (7) of the AWC hydraulic cylinder is installed at the rear of the lower AWC hydraulic cylinder (2). The lower rear lifting ring screw (7) of the AWC hydraulic cylinder is connected to the lower rear lifting beam (8) of the AWC hydraulic cylinder. The upper rear lifting ring screw (17) of the AWC hydraulic cylinder is installed at the rear of the upper AWC hydraulic cylinder (4). The upper rear lifting ring screw (17) of the AWC hydraulic cylinder is connected to the upper rear lifting beam (16) of the AWC hydraulic cylinder.

3. The disassembling and assembling tool for the AWC hydraulic cylinder of the vertical roll mill according to claim 1, characterized in that The front sling assembly of the AWC hydraulic cylinder includes a lower front eyebolt (10) of the AWC hydraulic cylinder, a lower front lifting beam (11) of the AWC hydraulic cylinder, an upper front eyebolt (19) of the AWC hydraulic cylinder, and an upper front lifting beam (18) of the AWC hydraulic cylinder. The lower front eyebolt (10) of the AWC hydraulic cylinder is installed at the front of the lower AWC hydraulic cylinder (2), and the lower front eyebolt (10) of the AWC hydraulic cylinder is connected to the lower front lifting beam (11) of the AWC hydraulic cylinder. The upper front eyebolt (19) of the AWC hydraulic cylinder is installed at the front of the upper AWC hydraulic cylinder (4), and the upper front eyebolt (19) of the AWC hydraulic cylinder is connected to the upper front lifting beam (18) of the AWC hydraulic cylinder.

4. The disassembling and assembling tool for the AWC hydraulic cylinder of the vertical roll mill according to claim 1, wherein The wheel (3.2) includes a wheel axle (3.2.1), a bushing (3.2.2), a wheel (3.2.3), a baffle (3.2.4), a first oil cup (3.2.5), and a first fastener (3.2.6). The rear part of the wheel axle (3.2.1) is axially sleeved in the inner hole of the wheel mounting support seat, and the bushing (3.2.2) is sleeved on the front part. The wheel (3.2.3) is sleeved outside the bushing (3.2.2). The baffle (3.2.4) is fixedly installed on the front end face of the wheel axle (3.2.1) through the first fastener (3.2.6). A first oil cup mounting hole is formed in the baffle (3.2.4), and the first oil cup (3.2.5) is installed at the first oil cup mounting hole. A first lubrication through hole is radially formed in the front part of the wheel axle (3.2.1), and a second lubrication through hole with both ends penetrating is radially formed in the bushing (3.2.2). The position of the first lubrication through hole corresponds to that of the second lubrication through hole. A third lubrication blind hole is horizontally formed on the front end face of the wheel axle (3.2.1), and the position of the third lubrication blind hole corresponds to that of the first oil cup mounting hole. The third lubrication blind hole is communicated with the first lubrication through hole.

5. The disassembling and assembling tool for the AWC hydraulic cylinder of the vertical roll mill according to claim 1, characterized in that, The ratchet hoist (3.3) includes two guide wheels (3.3.1), two bearing seats (3.3.2), a guide wheel shaft (3.3.3), two second oil cups (3.3.4), two shaft end baffles (3.3.5) and two second fasteners (3.3.6). The two bearing seats (3.3.2) are fixedly installed in the middle of the support plate through the two second fasteners (3.3.6). Corresponding positions on the upper parts of the two bearing seats (3.3.2) are both provided with guide wheel shaft mounting holes. The guide wheel shaft (3.3.3) is installed in the two guide wheel shaft mounting holes. Shaft end baffle mounting grooves are opened on both end faces of the guide wheel shaft (3.3.3). The two shaft end baffles (3.3.5) are sleeved in the two shaft end baffle mounting grooves respectively. Two guide wheels (3.3.1) are arranged side by side in the middle of the guide wheel shaft (3.3.3). Second oil cup mounting blind holes are axially opened in the middle of both end faces of the guide wheel shaft (3.3.3). The two second oil cups (3.3.4) are installed at the two second oil cup mounting blind holes. The two second oil cup mounting blind holes both extend to the middle position of the guide wheel shaft (3.3.3).

6. The disassembling and assembling tool for the AWC hydraulic cylinder of the vertical roll mill according to claim 1, characterized in that, The lower hand hoist (3.4) adopts any one of a circular hand hoist, a triangular hand hoist, a K-shaped hand hoist, a diamond-shaped hand hoist, a V-shaped hand hoist and a T-shaped hand hoist.

7. The disassembling and assembling tool for the AWC hydraulic cylinder of the vertical roll mill according to claim 1, characterized in that, The upper hand hoist (3.5) adopts any one of a circular hand hoist, a triangular hand hoist, a K-shaped hand hoist, a diamond-shaped hand hoist, a V-shaped hand hoist and a T-shaped hand hoist.

8. The disassembling and assembling tool for the AWC hydraulic cylinder of the vertical roll mill according to claim 1, characterized in that, The lower hand hoist (3.4) is replaced by a lower electric hoist.

9. The disassembling and assembling tool for the AWC hydraulic cylinder of the vertical roll mill according to claim 1, wherein The upper hand hoist (3.5) is replaced by an upper electric hoist.

10. A method for disassembling and assembling the AWC hydraulic cylinder of a vertical roll mill, based on the disassembling and assembling tool for the AWC hydraulic cylinder of a vertical roll mill according to any one of claims 1-9, characterized in that, It includes the following steps: Before removing the lower AWC hydraulic cylinder (2), first move the roll bearing seat and the balance bracket out of the rack window, retract the piston rods of the lower AWC hydraulic cylinder (2) and the balance cylinder (9) to the limit positions, remove the hydraulic and electrical connectors and the cylinder head of the lower AWC hydraulic cylinder (2), so that the piston rod of the lower AWC hydraulic cylinder (2) is exposed; Fix and install the inner lower lifting eye bolts (6) on the inner lower part of the rack (5); Lift the disassembly trolley (3) and the lifting sleeve (1) into the rack window and move them to the disassembly position; Install the piston rod fixing sleeve at one end of the lifting sleeve (1) on the piston rod part of the lower AWC hydraulic cylinder (2) and fix it with bolts, and the other end is fixedly connected to the lifting sleeve fixing plate with bolts; Hook the lower hand hoist (3.4) on the disassembly trolley (3) to the inner lower lifting eye bolt (6) of the rack, and hook the ratchet hoist (3.3) to the lifting sleeve (1); Fix and install the rear lifting eye bolt (7) of the lower AWC hydraulic cylinder on the rear part of the lower AWC hydraulic cylinder (2), and hook the rear lifting beam (8) of the lower AWC hydraulic cylinder to the rear lifting eye bolt (7) of the lower AWC hydraulic cylinder; Loosen the coupling bolts between the lower AWC hydraulic cylinder (2) and the frame (5), pull the lower manual hoist (3.4) on the disassembly cart (3), and jack out the lower AWC hydraulic cylinder (2) from the frame window to a certain distance through the lifting sleeve (1); Fix and install the front lifting ring screw (10) of the lower AWC hydraulic cylinder on the front of the lower AWC hydraulic cylinder (2), and hook the front lifting ring screw (10) of the lower AWC hydraulic cylinder with the front lifting beam (11) of the lower AWC hydraulic cylinder; Loosen the lifting sleeve (1), and lift the lower AWC hydraulic cylinder off the vertical roll mill through the rear lifting beam (8) of the lower AWC hydraulic cylinder and the front lifting beam (11) of the lower AWC hydraulic cylinder.

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