A device for replacing a cold bed turnover hydraulic cylinder and a construction method thereof

Abstract

The application provides a device and a construction method for replacing a cold bed turnover plate hydraulic cylinder, which comprises a supporting assembly and a conveying assembly arranged on the supporting assembly. The conveying assembly can move relative to the supporting assembly to transport the old hydraulic cylinder and the new hydraulic cylinder. The device has the beneficial effect that the conveying assembly can realize the back-and-forth transportation of the hydraulic cylinder between the installation position and the hoisting position, so that the replacement process of the turnover plate hydraulic cylinder is safer, simpler and more efficient. According to the production process downtime, the device can be used to realize the replacement of the old hydraulic cylinder and the new hydraulic cylinder, and the operation is convenient, thereby improving the work efficiency.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of steel pipe production, in particular to a device and construction method for replacing a cold bed turn plate hydraulic cylinder. BACKGROUND

[0002] The cold bed turn plate hydraulic cylinder undertakes the process connection work of transmitting the steel pipe from the straightening machine rear roller to the cold bed through lifting and lowering the turn plate. The turn plate is lifted and lowered by the hydraulic cylinder to realize the link of rolling to the cold bed in the production process to meet the needs of continuous pipe production. The hydraulic cylinder is repeatedly lifted and lowered with large stroke and high load in a service period, so the connecting pin shaft and the cylinder seal are often damaged, resulting in downtime and replacement of the hydraulic cylinder, causing production interruption. The original method for replacing the hydraulic cylinder is time-consuming and labor-intensive. To ensure safety, it usually takes 6 people and 5 hours to complete, a total of 30 working hours, which is low in efficiency, high in safety risk and affects production. SUMMARY

[0003] In view of the above problems, the present application provides a device and construction method for replacing a cold bed turn plate hydraulic cylinder to solve the above or other previous problems existing in the prior art.

[0004] To solve the above technical problems, the technical scheme adopted by the present application is: a device for replacing a cold bed turn plate hydraulic cylinder, comprising a support assembly and a transportation assembly provided on the support assembly, the transportation assembly being movable relative to the support assembly to transport the old and new hydraulic cylinders.

[0005] Further, the support assembly comprises a frame and a guide piece, the guide piece being provided on the side of the frame facing the turn plate to guide the movement of the transportation assembly.

[0006] Further, the number of guide pieces is two, which are arranged in parallel.

[0007] Further, the support assembly further comprises an auxiliary piece, the auxiliary piece being connected with the frame and being arranged obliquely to support the frame.

[0008] Further, the guide piece is a channel steel.

[0009] Further, the transportation assembly comprises a first locking piece, a second locking piece connected with the first locking piece, and a wheel set, the first locking piece and the second locking piece being detachably connected, the wheel set being connected with the first locking piece or the second locking piece, the first locking piece and the second locking piece constituting a receiving hole to accommodate and lock the hydraulic cylinder, the wheel set rotating to move along the guide piece to transport the hydraulic cylinder.

[0010] Further, the first locking piece and the second locking piece each comprise a connecting portion and an arc-shaped portion connected with the connecting portion, the connecting portion being provided at both ends of the arc-shaped portion, and the connecting portion being of a straight line structure.

[0011] Further, the connecting part corresponding to the first locking member and the second locking member is connected through the connecting member.

[0012] Further, the arc-shaped part corresponding to the first locking member and the second locking member is a semicircle, and the diameter of the accommodating hole formed by the arc-shaped part corresponding to the first locking member and the second locking member is smaller than the diameter of the rod cavity end cover of the hydraulic cylinder.

[0013] A construction method of a device for replacing a cold bed flap hydraulic cylinder, when the hydraulic cylinder fails, the replacement can be carried out during the production process downtime, comprising,

[0014] Preparation of a support assembly and a transportation assembly;

[0015] Mounting the transportation assembly on the support assembly;

[0016] Placing the support assembly at the hydraulic cylinder to be disassembled;

[0017] Pushing the transportation assembly to the position of the hydraulic cylinder to be disassembled, locking the hydraulic cylinder, and the transportation device is in contact with the outer edge of the rod cavity end cover of the hydraulic cylinder;

[0018] Removing the pin shafts at both ends of the hydraulic cylinder, pushing the transportation assembly, the transportation assembly carrying the hydraulic cylinder to the hoisting position, the hoisting tool is connected with the hydraulic cylinder, the transportation assembly is loosened, and the hydraulic cylinder is lifted off;

[0019] Mounting a new hydraulic cylinder on the transportation assembly and locking it, pushing the transportation assembly to the installation position, and installing the new hydraulic cylinder;

[0020] After the new hydraulic cylinder is installed, the device for replacing the cold bed flap hydraulic cylinder is disassembled for reuse.

[0021] The device for replacing the cold bed flap hydraulic cylinder has the transportation assembly, the transportation assembly has the first locking member and the second locking member, the hydraulic cylinder can be locked, the hydraulic cylinder can move with the movement of the transportation assembly, the transportation assembly can make reciprocating linear motion between the installation position and the hoisting position of the hydraulic cylinder, the old hydraulic cylinder and the new hydraulic cylinder can be transported during the replacement process, the replacement process of the flap hydraulic cylinder is safer, simpler and more efficient, the hydraulic cylinder can be disassembled and replaced according to the production process downtime, the operation is convenient, the work efficiency is improved, the first locking member and the second locking member are used to lock the cylinder body, the pin shafts at both ends of the hydraulic cylinder are removed and the pin shafts at both ends of the hydraulic cylinder are installed, the old hydraulic cylinder and the new hydraulic cylinder can be replaced, the device can be used for a long time and repeatedly, the transportation assembly can realize the transportation of the hydraulic cylinder between the installation position and the hoisting position, the labor is reduced, and the operation safety is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is the overall structural schematic diagram of the device of an embodiment of the present application;

[0023] Figure 2 is the structural schematic diagram of the transport assembly of an embodiment of the present application;

[0024] Figure 3 is the working process schematic diagram of the device of an embodiment of the present application.

[0025] In the drawings:

[0026] 1, upright column one 2, guide 3, transport assembly

[0027] 4, upright column two 5, cross beam two 6, cross beam one

[0028] 7, bolt assembly 8, flap 9, concrete foundation platform

[0029] 10, pin shaft 11, hydraulic cylinder 3-1, wheel set

[0030] 3-2, first locking piece 3-3, second locking piece 3-4, bolt assembly DETAILED DESCRIPTION

[0031] The present application will be further described below in conjunction with the drawings and specific embodiments.

[0032] Figure 1 The structural schematic diagram of an embodiment of the present application is shown, the embodiment relates to a device and construction method for replacing cold bed flap hydraulic cylinder, which is used for replacing cold bed flap hydraulic cylinder used between output roller way and cold bed of straightening machine of seamless steel pipe processing line, and can also be used for replacing the same type of flap hydraulic cylinder, has movable transport assembly, can transport old hydraulic cylinder and new hydraulic cylinder, can replace flap hydraulic cylinder in a short time, improves work efficiency, reduces installation risk, and reduces production equipment interruption time.

[0033] A device for replacing cold bed flap hydraulic cylinder, such as Figures 1-3As shown, the device comprises a support assembly and a transport assembly 3 arranged on the support assembly, the transport assembly 3 is movable relative to the support assembly to transport the old hydraulic cylinder 11 and the new hydraulic cylinder 11, the support assembly supports the transport assembly 3 so that the transport assembly 3 can contact and connect with the old hydraulic cylinder 11, after the old hydraulic cylinder 11 is disassembled, the old hydraulic cylinder 11 is carried by the transport assembly 3 and transported to the hoisting position, the old hydraulic cylinder 11 is lifted away by the lifting tool, the new hydraulic cylinder 11 is installed on the transport assembly 3 and transported to the installation position, the new hydraulic cylinder 11 is connected with the turnover plate 8 and the concrete foundation platform 9, and the replacement of the hydraulic cylinder 11 is completed. The device for replacing the hydraulic cylinder of the turnover plate of the cooling bed can be used for a long time and repeatedly, the disassembly, transportation and replacement of the old hydraulic cylinder 11 and the new hydraulic cylinder 11 are simple and safe in operation, and the replacement efficiency is high. The old hydraulic cylinder 11 and the new hydraulic cylinder 11 can be replaced according to the production process downtime.

[0034] Specifically, the support assembly comprises a frame and a guide 2 arranged on the side of the frame facing the turnover plate 8 to guide the movement of the transport assembly 3. The frame serves as a support skeleton, facilitating the installation of the guide 2 and the installation and movement of the transport assembly 3, so that the hydraulic cylinder 11 can be installed on the transport assembly 3 and moved with the transport assembly 3 for transfer.

[0035] The number of the above-mentioned guide 2 is two, which are arranged in parallel to enable the transport assembly 3 to move linearly along the guide 2 to realize the transportation of the old hydraulic cylinder 11 and the new hydraulic cylinder 11 between the hoisting position and the installation position.

[0036] The guide 2 is a channel steel, and the two channel steels are arranged opposite to each other in the installation to enable the transport assembly 3 to be installed in the grooves of the two channel steels and reciprocate along the length direction of the two channel steels.

[0037] The above-mentioned frame comprises a column group and a cross beam group connected with each other, and the column group and the cross beam group are arranged perpendicularly to each other to form a frame structure. In this embodiment, the column group comprises a plurality of column one 1 and a plurality of column two 4, the plurality of column one 1 is arranged in parallel, the plurality of column two 4 is arranged in parallel, and the plurality of column one 1 and the plurality of column two 4 are arranged in parallel. The number of column one 1 can be two, and the number of column two 4 can also be two. The number of column one 1 and the number of column two 4 are selected according to actual needs, which is not specifically required here.

[0038] The beam group comprises a plurality of beams one 6 and a plurality of beams two 5, the plurality of beams one 6 are arranged in parallel, the plurality of beams two 5 are arranged in parallel, the number of beams one 6 is at least two, can be three, or four, according to actual demand to select setting, here do not make specific requirements; the number of beams two 5 is at least two, can be three, or four, according to actual demand to select, here do not make specific requirements.

[0039] In the embodiment, preferably, the number of beams one 6 is three, and the number of beams two 5 is two.

[0040] Both ends of each beam one 6 are connected with two columns one 1 respectively, connected through bolt assembly 7, bolt assembly 7 comprises bolt, spring washer arranged on bolt and nut, spring washer is located between bolt head and column one 1, prevent nut loose; both ends of each beam two 5 are connected with a group of corresponding column one 1 and column two 4 respectively, connect column one 1 and column two 4 together, connected through bolt assembly 7, constitute frame structure.

[0041] In the embodiment, the number of column one 1 is two, and the number of column two 4 is two, two beams one 6 are sequentially arranged along the length direction of column one 1, both ends of each beam one 6 are connected with one column one 1 respectively, and the beam one 6 is arranged perpendicularly to the two column one 1; one beam one 6 is connected between the two column two 4, and the beam one 6 is arranged perpendicularly to the two column two 4; the two column one 1 correspond to the two column two 4, one beam two 5 is connected between each group of corresponding column one 1 and column two 4, and the beam two 5 is arranged perpendicularly to the column one 1 and column two 4 of the group, to form a square frame structure. The beam one 6 is not located at the end of the column one 1, and the beam two 5 is not located at the end of the column one 1 and column two 4, when the column one 1 and column two 4 are connected through the beam two 5, one end of the column one 1 and column two 4 is arranged flush, to facilitate the installation of the guide piece 2.

[0042] In the embodiment, since the hydraulic cylinder 11 connected with the turning plate 8 is installed on the concrete foundation table 9, the length of the column one 1 is greater than the length of the column two 4, one end of the column one 1 is connected with the ground, and the end of the column two 4 corresponding to the bottom surface of the column one 1 is connected with the concrete foundation table 9, so that one side of the frame is a plane, and the other side is a stepped surface.

[0043] The column one 1 can be a channel steel, and according to actual demand, the column one 1 can be formed by welding a plurality of channel steels. A steel plate is welded at one end of the column one 1 connected with the guide piece 2, to seal the end of the column one 1, so as to facilitate the connection of the column one 1 with the guide piece 2 through the bolt assembly 7.

[0044] The second column 4 can be a channel steel, and the second column 4 can be welded by a plurality of channel steels according to actual requirements. A steel plate is welded at one end of the second column 4 connected with the guide 2, and the end of the second column 4 is blocked to facilitate the connection of the second column 4 with the guide 2 through a bolt assembly.

[0045] The first beam 6 can be a channel steel, and steel plates are welded at two ends of the first beam 6, and the two ends of the first beam 6 are blocked to facilitate the connection of the two ends of the first beam 6 with the first column 1 through a bolt assembly.

[0046] The second beam 5 can be a channel steel, and steel plates are welded at two ends of the second beam 5, and the two ends of the second beam 5 are blocked to facilitate the connection of the two ends of the second beam 5 with the first column 1 and the second column 4 through bolt assemblies respectively.

[0047] The support assembly further includes an auxiliary member connected with the frame and inclinedly arranged to support the frame. One end of the auxiliary member is connected with the first column 1, and the other end extends towards the ground to be connected with the ground in an inclined manner, so that the auxiliary member supports the first column 1. In this embodiment, the included angle between the auxiliary member and the first column 1 can be 30°. The auxiliary member can be a channel steel, and the auxiliary member is welded with the first column 1.

[0048] The transport assembly 3 includes a first locking member 3-2, a second locking member 3-3 connected with the first locking member 3-2, and a wheel set 3-1 connected with the first locking member 3-2 or the second locking member 3-3. The first locking member 3-2 and the second locking member 3-3 are detachably connected, and the first locking member 3-2 and the second locking member 3-3 are configured to form a receiving hole for accommodating and locking the hydraulic cylinder 11. The wheel set 3-1 rotates and moves along the guide 2 to transport the hydraulic cylinder 11. The hydraulic cylinder 11 is located in the receiving hole, and the first locking member 3-2 and the second locking member 3-3 are in contact with the outer wall of the hydraulic cylinder 11 and lock the hydraulic cylinder 11, so that the hydraulic cylinder 11 moves with the transport assembly 3.

[0049] The first locking member 3-2 and the second locking member 3-3 each include a connecting portion and an arc-shaped portion connected with the connecting portion. The connecting portion is provided at two ends of the arc-shaped portion and has a straight line structure, and the arc-shaped portion is fixedly connected with the connecting portion, preferably integrally formed. The two connecting portions of the first locking member 3-2 are symmetrically arranged on both sides of the arc-shaped portion, and the two connecting portions of the second locking member 3-3 are symmetrically arranged on both sides of the arc-shaped portion.

[0050] The first locking piece 3-2 and the second locking piece 3-3 are both made of a steel plate with a certain length and width, and are bent into an arc-shaped structure during the manufacturing process to form an arc-shaped part. The cross-sectional shape of the arc-shaped part is adapted to the shape of the outer wall of the hydraulic cylinder 11, so that when the first locking piece 3-2 and the second locking piece 3-3 lock the hydraulic cylinder 11, the arc-shaped part of the first locking piece 3-2 and the arc-shaped part of the second locking piece 3-3 are in close contact with the outer wall of the hydraulic cylinder 11, and the hydraulic cylinder 11 is fixed between the first locking piece 3-2 and the second locking piece 3-3, and the hydraulic cylinder 11 moves with the first locking piece 3-2 and the second locking piece 3-3.

[0051] The connecting parts of the first locking piece 3-2 and the second locking piece 3-3 are connected by a connecting piece, which can be a bolt assembly 3-4, so that the first locking piece 3-2 and the second locking piece 3-3 can be detachably connected, facilitating the installation and disassembly of the hydraulic cylinder 11. A threaded hole is provided at one end of the connecting part of the first locking piece 3-2 close to the arc-shaped part, and a threaded hole is also provided at the corresponding position of the connecting part of the second locking piece 3-3, so that the bolt can pass through and connect the first locking piece 3-2 and the second locking piece 3-3 together. In this embodiment, both connecting parts of the first locking piece 3-2 are provided with threaded holes, and the corresponding positions of the two connecting parts of the second locking piece 3-3 are also provided with threaded holes.

[0052] In this embodiment, the arc-shaped parts of the first locking piece 3-2 and the second locking piece 3-3 are both semicircles, and the radius of the semicircle is adapted to the radius of the hydraulic cylinder 11. The actual length of the arc-shaped part is shorter than its theoretical length, and the actual position of each end of the arc-shaped part is reduced by 3-8mm from the theoretical position, so that the two ends of the arc-shaped part are connected to the connecting parts respectively and are rounded.

[0053] The diameter of the accommodating hole formed by the corresponding arc-shaped parts of the first locking piece 3-2 and the second locking piece 3-3 is smaller than the diameter of the rod cavity end cover of the hydraulic cylinder 11, so that the arc-shaped part of the first locking piece 3-2 and the arc-shaped part of the second locking piece 3-3 are in contact with the outer wall of the hydraulic cylinder 11, and the first locking piece 3-2 and the second locking piece 3-3 are connected by the bolt assembly 3-4. After the hydraulic cylinder 11 is locked and fixed between the first locking piece 3-2 and the second locking piece 3-3, the first locking piece 3-2 and the second locking piece 3-3 are located below the rod cavity end cover of the hydraulic cylinder 11, and the rod cavity end cover is clamped above the first locking piece 3-2 and the second locking piece 3-3, preventing the hydraulic cylinder 11 from falling off the first locking piece 3-2 and the second locking piece 3-3 during transportation.

[0054] The wheel set 3-1 is a rubber wheel set, comprising a connecting shaft and a running wheel, one end of the connecting shaft is fixedly connected with the connecting part of the first locking piece 3-2 or the second locking piece 3-3, the other end is rotatably connected with the running wheel, and the running wheel can rotate relative to the connecting shaft; in this embodiment, preferably, the length of the connecting part of the first locking piece 3-2 is greater than the length of the connecting part of the second locking piece 3-3, both connecting parts of the first locking piece 3-2 are each connected with one wheel set 3-1, and the distance between the two wheel sets 3-1 is adapted to the distance between the two guide pieces 2, so that when the transport assembly 3 is installed on the support assembly, the two wheel sets 3-1 are located in the grooves of the two guide pieces 2 respectively.

[0055] The cold bed turning plate 8 is provided with a mounting seat, one end of the hydraulic cylinder 11 is connected with the mounting seat on the turning plate 8 through the pin shaft 10, the mounting seat is installed on the concrete foundation table 9, the other end of the hydraulic cylinder 11 is connected with the mounting seat on the concrete foundation table 9 through the pin shaft 10, and the rotation of the turning plate 8 is realized through the extension and contraction of the hydraulic cylinder 11, and the transmission of the steel pipe is realized.

[0056] The construction method of the device for replacing the hydraulic cylinder 11 of the cold bed turning plate 8 comprises,

[0057] When the hydraulic cylinder 11 fails, the replacement can be carried out by using the production process downtime gap;

[0058] Preparation of the support assembly and the transport assembly 3: according to actual needs, choose corresponding size of channel steel, prepare column one 1, column two 4, cross beam one 6 and cross beam two 5, connect two column one 1 together through cross beam one 6, connect two column two 4 together through cross beam one 6, connect a corresponding group of column one 1 and column two 4 together through cross beam two 5, construct a frame structure, install guide piece 2 on the side surface flush with column one 1 and column two 4, the two ends of one guide piece 2 are respectively connected with the end of a corresponding group of column one 1 and the end of column two 4, and the two ends of the other guide piece 2 are respectively connected with the end of another corresponding group of column one 1 and the end of column two 4;

[0059] According to actual needs, choose corresponding size of steel plate, prepare first locking piece 3-2 and second locking piece 3-3, bend corresponding arc-shaped part, connect first locking piece 3-2 and second locking piece 3-3 together through bolt assembly 3-4; install wheel set 3-1 at both ends of first locking piece 3-2, the distance between the two wheel sets 3-1 is adapted to the distance between the two guide pieces 2, so that when the transport assembly 3 is installed on the support assembly, the running wheels of the two wheel sets 3-1 are respectively located on the two guide pieces 2, so that the transport assembly 3 can walk along the guide piece 2 and make linear reciprocating motion;

[0060] Install the transport assembly 3 on the support assembly, and the two running wheels of the transport assembly 3 are located on the two guide pieces 2.

[0061] The completed support assembly is placed at the hydraulic cylinder 11 to be disassembled, which is located in the frame between the two guides 2, and the position of the hydraulic cylinder 11 corresponds to the positions of the arc-shaped parts of the first locking member 3-2 and the second locking member 3-3 of the transport assembly 3;

[0062] The transport assembly 3 is pushed to the position of the hydraulic cylinder 11 to be disassembled, and the transport device is in contact with the outer edge of the rod cavity end cover of the hydraulic cylinder 11: the bolt assembly 3-4 connecting the first locking member 3-2 and the second locking member 3-3 is loosened, the first locking member 3-2 and the second locking member 3-3 are separated, the arc-shaped part of the first locking member 3-2 is in contact with the outer wall of the hydraulic cylinder 11, then the second locking member 3-3 is installed, the arc-shaped part of the second locking member 3-3 is in contact with the outer wall of the hydraulic cylinder 11, and as the bolt is tightened, the first locking member 3-2 and the second locking member 3-3 clamp the hydraulic cylinder 11, at the same time, the end parts of the first locking member 3-2 and the second locking member 3-3 facing the flap 8 are in contact with the lower side of the outer edge of the rod cavity end cover of the hydraulic cylinder 11, and the hydraulic cylinder 11 is clamped on the first locking member 3-2 and the second locking member 3-3;

[0063] The pin shafts 10 at both ends of the hydraulic cylinder 11 are removed, the hydraulic cylinder 11 is separated from the flap 8 and the concrete foundation platform 9, the transport assembly 3 is pushed, the walking wheels walk along the guides 2 and move away from the installation position of the hydraulic cylinder 11, the transport assembly 3 carries the hydraulic cylinder 11 to the hoisting position, the hoisting tool is connected with the hydraulic cylinder 11, the transport assembly 3 is loosened, the bolt assembly 3-4 between the first locking member 3-2 and the second locking member 3-3 is loosened, the hoisting tool operates, and the hydraulic cylinder 11 is lifted off;

[0064] A new hydraulic cylinder 11 is installed on the transport assembly 3, the new hydraulic cylinder 11 is installed at the arc-shaped parts corresponding to the first locking member 3-2 and the second locking member 3-3, and the first locking member 3-2 and the second locking member 3-3 are locked, the new hydraulic cylinder 11 is locked and fixed on the transport assembly 3, the transport assembly 3 is pushed to the installation position, and the pin shafts 10 at both ends of the hydraulic cylinder 11 are installed, and the pin shafts 10 at both ends of the new hydraulic cylinder 11 are connected with the mounting seats on the flap 8 and the mounting seats on the concrete foundation platform 9, respectively;

[0065] After the installation of the new hydraulic cylinder 11 is completed, the device for replacing the hydraulic cylinder of the cold bed flap is disassembled for reuse.

[0066] The replacement of the hydraulic cylinder of the cold bed flap is carried out by the above method, the hydraulic cylinder of the flap can be replaced in a short time, and the replacement of the hydraulic cylinder of the flap by the device requires 3 people x 1.5 hours = 4.5 man-hours, which greatly improves the work efficiency, reduces the safety risks and other problems, and increases the production time by more than 3 hours, thereby improving the production capacity.

[0067] The application has the advantages and positive effects that: due to the above technical scheme, the device for replacing the turnover plate hydraulic cylinder has a transportation assembly, the transportation assembly has a first locking piece and a second locking piece, can lock the hydraulic cylinder, so that the hydraulic cylinder can move with the movement of the transportation assembly, the transportation assembly can make reciprocating linear motion between the installation position and the hoisting position of the hydraulic cylinder, realize the transportation of the old hydraulic cylinder and the new hydraulic cylinder during the replacement process, so that the replacement process of the turnover plate hydraulic cylinder is safer, simpler and more efficient, the old hydraulic cylinder can be replaced according to the production process downtime, the transportation part of the device is used to realize the replacement of the hydraulic cylinder, the operation is convenient, the work efficiency is improved; the first locking piece and the second locking piece are used to lock the cylinder body, the pin shaft at both ends of the hydraulic cylinder is removed and the pin shaft at both ends of the hydraulic cylinder is installed, that is, the old hydraulic cylinder can be removed and the new hydraulic cylinder can be replaced, so that the device can be used for a long time and repeatedly used; the transportation assembly can realize the transportation of the hydraulic cylinder between the installation position and the hoisting position, reduce the labor, and improve the operation safety.

[0068] The above describes the embodiments of the application in detail, but the content described is only the preferred embodiments of the application and cannot be considered as limiting the scope of the application. Any equivalent changes and improvements made according to the scope of the application should still belong to the scope of the patent of the application.

Claims

1. An apparatus for replacing a cold bed flap hydraulic cylinder, characterized by: The device for replacing hydraulic cylinder of cold bed turnover plate comprises a supporting assembly and a transportation assembly arranged on the supporting assembly, and the transportation assembly is movable relative to the supporting assembly to transport the old hydraulic cylinder and replace the new one. The supporting assembly comprises a frame and a guide arranged on the side of the frame facing the turnover plate to guide the movement of the transportation assembly. The guide is a channel steel. The transportation assembly comprises a first locking member, a second locking member connected with the first locking member, and a wheel set connected with the first locking member or the second locking member. The first locking member and the second locking member each comprise a connecting portion and an arc-shaped portion connected with the connecting portion. The connecting portion of the first locking member and the second locking member is in a straight line structure.

2. The apparatus for replacing the cold bed turn down hydraulic cylinder of claim 1, wherein: The arc-shaped portions of the first locking member and the second locking member are each in a semicircle, and the diameter of the accommodating hole formed by the arc-shaped portions of the first locking member and the second locking member is smaller than the diameter of the rod cavity end cover of the hydraulic cylinder.

3. The apparatus for replacing the cold bed turn down hydraulic cylinder of claim 2, wherein: The number of the guides is two, and the guides are arranged in parallel.

4. The apparatus for replacing the turn down hydraulic cylinder of a cold bed according to any one of claims 1 to 3, characterized in that: The supporting assembly further comprises an auxiliary member connected with the frame and arranged obliquely to support the frame.

5. A method of construction of a device for replacing a cold bed turn down hydraulic cylinder, characterised by: The connecting portions of the first locking member and the second locking member are connected by a connecting member. The device for replacing hydraulic cylinder of cold bed turnover plate can be used to replace the hydraulic cylinder when the hydraulic cylinder fails during the production process stoppage, and comprises the following steps, manufacturing a supporting assembly and a transportation assembly; installing the transportation assembly on the supporting assembly; placing the supporting assembly at the hydraulic cylinder to be disassembled; pushing the transportation assembly to the position of the hydraulic cylinder to be disassembled, locking the hydraulic cylinder, and contacting the transportation device with the outer edge of the rod cavity end cover of the hydraulic cylinder; removing the pin shafts at both ends of the hydraulic cylinder, pushing the transportation assembly, and carrying the hydraulic cylinder to the hoisting position; connecting the hoisting tool with the hydraulic cylinder, loosening the transportation assembly, and hoisting the hydraulic cylinder away; installing the new hydraulic cylinder on the transportation assembly and locking it, pushing the transportation assembly to the installation position, and installing the new hydraulic cylinder; after the installation of the new hydraulic cylinder is completed, disassembling the device for replacing hydraulic cylinder of cold bed turnover plate for reuse.

Images