CN113441931B - Drawing tool and process for sintering trolley wheel axle - Google Patents
Drawing tool and process for sintering trolley wheel axle Download PDFInfo
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- CN113441931B CN113441931B CN202010217435.7A CN202010217435A CN113441931B CN 113441931 B CN113441931 B CN 113441931B CN 202010217435 A CN202010217435 A CN 202010217435A CN 113441931 B CN113441931 B CN 113441931B
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- power cylinder
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- wheel axle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/027—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using hydraulic or pneumatic means
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Abstract
The invention relates to a drawing tool and a drawing process for a wheel axle of a sintering trolley, which are used for drawing the wheel axle of the sintering trolley out of a trolley body, wherein the drawing tool comprises a seat frame, a telescopic power cylinder and a height adjusting device, the telescopic power cylinder is arranged on the seat frame in a vertically movable manner, a piston rod of the telescopic power cylinder is provided with a sleeving through hole along the axis, the inner diameter of the sleeving through hole is larger than the outer diameter of the wheel axle, and the height adjusting device drives the telescopic power cylinder to move up and down; the automobile wheel axle further comprises an axle end pressing plate arranged on the rear axle end face of the piston rod, wherein a connecting bolt hole is formed in the axle end pressing plate and corresponds to a bolt hole in the end face of the wheel axle. According to the drawing tool, the axle and the piston rod keep good coaxiality in the drawing process, the coincidence degree of the action direction of the drawing force and the axial line of the axle is high, the concentrated action point of the drawing force and the axle center of the axle tend to be concentric, the stress of the axle is concentrated, the drawing is more efficient, the labor intensity is high, and the working efficiency is high.
Description
Technical Field
The invention relates to the field of iron-making sintering equipment, in particular to a drawing tool and a drawing process for a wheel axle of a sintering trolley.
Background
The sintering pallet is a main operation part of a sintering machine and is used for sintering iron ore powder in a sintering plant. Because the sintering trolley is in a high-temperature and continuous running state for a long time, the wheel shaft of the sintering trolley is quickly worn, and the frequency of replacing the wheel shaft is high. The treatment is generally carried out by adopting an off-line maintenance method. The dismantling construction of the wheel axle of the sintering trolley is mainly completed by means of the mutual matching of 4 workers using 2 hydraulic jacks, 2 hydraulic stations and 1 chain block, the wheel axle of the sintering trolley and the trolley body (are assembled in an interference fit manner, and the wheel axle is difficult to pull out by adopting conventional tools, so the whole process of pulling the wheel axle consumes long time and has low efficiency.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention provides a drawing tool and a drawing process for a wheel axle of a sintering pallet, which can efficiently and stably draw the wheel axle.
In order to achieve the purpose, the invention provides a drawing tool for a wheel axle of a sintering trolley, which is used for drawing the wheel axle of the sintering trolley out of a trolley body and comprises a seat frame, a telescopic power cylinder and a height adjusting device, wherein the telescopic power cylinder is mounted on the seat frame in a vertically movable manner; the automobile wheel axle further comprises an axle end pressing plate arranged on the rear axle end face of the piston rod, wherein a connecting bolt hole is formed in the axle end pressing plate and corresponds to a bolt hole in the end face of the wheel axle.
Further, the telescopic power cylinder is a hydraulic cylinder.
Further, height adjusting device includes vertical arrangement's lead screw, rotation axis and connects the drive assembly of lead screw and rotation axis, the lead screw lower extreme is connected with flexible power cylinder, drive lead screw up-and-down motion through drive assembly when the rotation axis rotates.
Furthermore, the telescopic power cylinder is connected with the height adjusting device, can be rotatably arranged on the connecting piece, and has a rotation axis along the horizontal direction and perpendicular to the piston axis.
Furthermore, the connecting piece includes two connection curb plates that are located the flexible power cylinder left and right sides respectively, the flexible power cylinder left and right sides is connected with two connection curb plates respectively through horizontal pivot, and two horizontal pivot are coaxial and arrange along left and right directions.
Furthermore, the telescopic power cylinder comprises a vertical slide rail arranged on the seat frame and a slide block arranged on the vertical slide rail, wherein the slide block and the telescopic power cylinder are vertically fixed.
Furthermore, the four vertical slide rails are respectively arranged at four corners of the telescopic power cylinder.
Further, the universal solid wheel is arranged below the seat frame.
The invention also provides a drawing process of the sintering trolley wheel shaft, which is used for drawing the wheel shaft of the sintering trolley out of the trolley body, wherein the wheel shaft is sleeved with the shell and is drawn by adopting the drawing tool, and the drawing process comprises the following steps:
s1, preparing a drawing tool;
s2, after the sintering trolley is off-line, horizontally placing the sintering trolley, keeping a specified distance between a wheel shaft and the ground, and protectively removing parts connected with the wheel shaft;
s3, moving the drawing tool to the position of the wheel axle, adjusting the height of the telescopic power cylinder through a height adjusting device to enable the sleeving through hole of the piston rod to be approximately coaxial with the center of the wheel axle, and sleeving the front end of the sleeving through hole of the piston rod on the wheel axle; installing a shaft end pressure plate at the rear end of the piston rod, and screwing a fastening bolt into a bolt hole in the end face of the wheel shaft after penetrating through a connecting bolt hole;
s4, starting the telescopic power cylinder, extending or contracting a piston rod of the telescopic power cylinder, applying drawing force to the wheel shaft for drawing, and controlling the telescopic power cylinder to keep stable drawing force;
s5, uniformly heating the shell on the wheel shaft to enable the shell to expand; and in the baking process, the telescopic power cylinder keeps constant drawing force until the wheel axle is completely drawn out.
Further, in the step S4, the telescopic power cylinder is controlled to keep the drawing force stable at 980kN, and in the step S5, when the shell is a carbon steel shell, the shell is heated to 250 ℃.
As described above, the drawing tool and the drawing process provided by the invention have the following beneficial effects:
the telescopic power cylinder and the height adjusting device are arranged, a piston rod of the telescopic power cylinder is designed in a hollow mode, the inner diameter of the sleeving through hole is customized according to the outer diameter of a wheel axle, when the telescopic power cylinder is used, the height of the telescopic power cylinder is adjusted through the height adjusting device, the sleeving through hole in the piston rod is approximately coaxial with the center of the wheel axle, the front end of the sleeving through hole is sleeved on the wheel axle, then an axle end pressing plate is arranged on the rear axle end face of the piston rod, a fastening bolt penetrates through a connecting bolt hole in the axle end pressing plate and is screwed into a bolt hole in the end face of the wheel axle, the telescopic power cylinder is started, the piston rod of the telescopic power cylinder stretches out or contracts, pulling force is applied to the wheel axle for drawing, and therefore drawing work is achieved. According to the drawing tool, the axle and the piston rod keep good coaxiality in the drawing process, the coincidence degree of the action direction of the drawing force and the axial line of the axle is high, the concentrated action point of the drawing force and the axle center of the axle tend to be concentric, the stress of the axle is concentrated, the drawing is more efficient, the labor intensity is high, and the working efficiency is high. Moreover, the method can be applied to different occasions, and the application range is widened.
Drawings
Fig. 1 is a schematic structural view of the drawing tool of the present invention, and the shaft end pressing plate is omitted.
Fig. 2 is a front view of fig. 1.
Fig. 3 is a right side view of fig. 1.
Fig. 4 is a schematic connection diagram of the drawing tool and the wheel shaft of the present invention.
Description of the element reference numerals
1. Seat frame
2. Telescopic power cylinder
21. Piston rod
22. Muff-coupling through hole
3. Height adjusting device
31. Screw mandrel
32. Rotating shaft
33. Hand wheel
34. Transmission assembly
4. Connecting piece
41. Connecting side plate
5. Vertical sliding rail
6. Sliding block
7. Horizontal axle pin
8 universal solid wheel
9. Shaft end pressing plate
10. Wheel axle
11. Trolley body
12. Fastening bolt
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, proportions, and dimensions shown in the drawings and described in the specification are for illustrative purposes only and are not intended to limit the scope of the present invention, which is defined by the claims. In addition, the terms such as "upper", "lower", "left", "right" and "middle" used in the present specification are for convenience of description only, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship thereof may be regarded as the scope of the present invention without substantial changes in the technical contents.
Referring to fig. 1 to 4, the invention provides a drawing tool for a wheel axle of a sintering pallet, which is used for drawing the wheel axle 10 of the sintering pallet out of a pallet body 11, the drawing tool comprises a seat frame 1, a telescopic power cylinder 2 which is arranged on the seat frame 1 in a vertically movable manner, and a height adjusting device 3, a piston rod 21 of the telescopic power cylinder 2 is provided with a sleeving through hole 22 along an axis, the inner diameter of the sleeving through hole 22 is larger than the outer diameter of the wheel axle 10, and the height adjusting device 3 drives the telescopic power cylinder 2 to move up and down; the automobile wheel shaft further comprises a shaft end pressing plate 9 arranged on the rear shaft end face of the piston rod 21, and a connecting bolt hole is formed in the shaft end pressing plate 9 and corresponds to a bolt hole in the end face of the wheel shaft 10.
According to the drawing tool, the piston rod 21 of the telescopic power cylinder 2 is in a hollow design, the inner diameter of the sleeving through hole 22 is customized according to the outer diameter of the wheel axle 10 and is slightly larger than the outer diameter of the wheel axle 10, and the inner diameter can be determined according to actual conditions. When the drawing tool is used, referring to fig. 4, the drawing tool is moved to the wheel axle 10, the height of the telescopic power cylinder 2 is adjusted through the height adjusting device 3, the sleeving through hole 22 in the piston rod 21 is approximately coaxial with the center of the wheel axle 10, the front end of the sleeving through hole 22 is sleeved on the wheel axle 10, the end part of the wheel axle 10 is located in the sleeving through hole 22, the shaft end pressing plate 9 is installed on the rear shaft end surface of the piston rod 21, the fastening bolt 12 penetrates through the connecting bolt hole in the shaft end pressing plate 9 and is screwed into the bolt hole in the end surface of the wheel axle 10, the piston rod 21 is fixedly connected with the wheel axle 10, the telescopic power cylinder 2 is started, the piston rod 21 extends or contracts, and drawing force is applied to the wheel axle 10 for drawing, so that drawing work is achieved. The shaft end pressing plate 9 can be installed at the rear shaft end of the piston rod 21 in advance, and can also be installed on site, the shaft end pressing plate 9 and the piston rod 21 can be connected or not connected, preferably, the shaft end pressing plate 9 and the piston rod 21 are not fixed, the piston rod 21 is installed after being sleeved on the wheel shaft 10, and the connection bolt hole in the shaft end pressing plate 9 is conveniently adjusted to be aligned with the bolt hole in the end face of the wheel shaft 10.
The drawing tool adopts the telescopic power cylinder 2 to provide power, the wheel shaft 10 is provided with a section which is positioned in the sleeving through hole 22 of the piston rod 21 in the drawing process, the wheel shaft and the sleeving through hole keep good coaxiality, the action direction of the drawing force is high in coincidence degree with the axial lead of the wheel shaft 10, the concentrated action point of the drawing force is more concentric with the axial lead of the wheel shaft 10, the stress on the wheel shaft 10 is more concentrated, the drawing is more efficient, and compared with the existing manual drawing mode, the labor intensity is high, and the working efficiency is high. Moreover, the telescopic power cylinder 2 can be flexibly adjusted through the height adjusting device 3, so that the telescopic power cylinder is suitable for different occasions, and the application range is widened.
In the drawing tool of the present invention, the telescopic power cylinder 2 may be a hydraulic cylinder, an electric cylinder or an air cylinder, in this embodiment, preferably, the telescopic power cylinder 2 is a hydraulic cylinder, which can provide a large drawing force, and is configured with an independent hydraulic station connected to the hydraulic cylinder to provide hydraulic energy to the hydraulic cylinder, and a separate design is adopted between the hydraulic cylinder and the drawing tool. During the in-service use, to the sintering platform truck that the scene is commonly used, axletree 10 external diameter is 160mm, and the effective jacking power position of pneumatic cylinder is 980kN, and the bell and spigot joint through-hole 22 hole latus footpath is phi 165mm, and effective stroke is 257mm.
As a preferable design, referring to fig. 1 to 3, in this embodiment, the height adjusting device 3 includes a screw 31, a rotating shaft 32, and a transmission assembly 34 connecting the screw 31 and the rotating shaft 32, the lower end of the screw 31 is connected to the telescopic power cylinder 2, the rotating shaft 32 is further provided with a hand wheel 33, the rotating shaft 32 is rotated by the hand wheel 33, the rotating shaft 32 drives the screw 31 to move up and down through the transmission assembly 34, so as to adjust the height of the telescopic power cylinder 2, and in this embodiment, the effective lifting height is 400mm. The transmission assembly 34 may specifically adopt an existing structure such as a worm gear mechanism, and the transmission function can be realized.
As a preferred design, referring to fig. 1 to 3, the telescopic power cylinder 2 is connected with the height adjusting device 3 through a connecting piece 4, and the telescopic power cylinder 2 is rotatably mounted on the connecting piece 4 with a rotation axis along the horizontal direction and perpendicular to the axis of a piston rod 21 of the telescopic power cylinder. Specifically, in this embodiment, the connecting member 4 is fixedly connected to the lower end of the screw rod 31, the connecting member 4 includes two connecting side plates 41 respectively located at the left and right sides of the telescopic power cylinder 2, the left and right sides of the telescopic power cylinder 2 are respectively connected to the two connecting side plates 41 through the horizontal shaft pin 7, the two horizontal shaft pins 7 are coaxial and are arranged along the left and right directions, that is, the horizontal shaft pin 7 is perpendicular to the axis of the piston rod 21, and the horizontal shaft pin 7 constitutes a horizontal angle adjusting structure of the telescopic power cylinder 2. Because the wheel axle 10 is not necessarily completely horizontal in actual site, the telescopic power cylinder 2 can rotate through the horizontal shaft pin 7, so that the horizontal angle of the telescopic power cylinder 2 can be adjusted, and the piston rod 21 of the telescopic power cylinder is coaxial with the wheel axle 10.
As a preferable design, referring to fig. 1 to 3, in this embodiment, a universal solid wheel 8 is further disposed at the lower end of the seat frame 1, so as to facilitate the movement and steering of the drawing tool, and in particular, the telescopic power cylinder 2 has a left-right steering function, and is combined with the up-down adjustment and horizontal angle adjustment functions of the telescopic power cylinder 2, so that the telescopic power cylinder 2 has a multi-directional adjustment function, and the use flexibility of the drawing tool is improved.
As a preferable design, referring to fig. 1 to fig. 3, in this embodiment, the drawing tool further includes a vertical slide rail 5 disposed on the seat frame 1, and a slider 6 mounted on the vertical slide rail 5, and the slider 6 and the telescopic power cylinder 2 are vertically fixed. Specifically, four vertical slide rails 5 are arranged at four corners of the telescopic power cylinder 2, and the slide block 6 is fixed on the connecting side plate 41. Therefore, the vertical sliding rail 5 and the sliding block 6 are used for stabilizing the up-and-down motion of the telescopic power cylinder 2 and improving the stability of the telescopic power cylinder 2 during working.
The invention also provides a drawing process of the sintering trolley wheel shaft, which is used for drawing the wheel shaft 10 of the sintering trolley out of the trolley body 11, the wheel shaft 10 is sleeved with the shell, the wheel shaft 10 and the shell are in interference fit, the drawing process is carried out by adopting the drawing tool, and the drawing process comprises the following steps:
s1, drawing tool preparation work. Specifically, when the drawing tool in the embodiment is adopted, the independent hydraulic station is connected with the hydraulic cylinder through the quick connector, and the power supply of the hydraulic station is connected and tested.
S2, after the sintering trolley is off-line, the sintering trolley is horizontally placed, the wheel shaft 10 keeps a specified distance from the ground, and parts connected with the wheel shaft 10 are protectively removed. Specifically, the trolley is placed on a horizontal sleeper, the height of the center of the wheel axle 10 from the ground is not less than 150mm, and parts such as metal wheels, shaft sleeves and pressure plates at the rear parts of the wheel axles of the trolley are protectively removed.
S3, moving the drawing tool to the wheel axle 10, adjusting the height of the telescopic power cylinder 2 through the height adjusting device 3 to enable the sleeving through hole 22 of the piston rod 21 to be approximately coaxial with the center of the wheel axle 10, and sleeving the front end of the sleeving through hole 22 of the piston rod 21 on the wheel axle 10; an end pressure plate 9 is mounted at the rear end of the piston rod 21 and screwed into a bolt hole in the end face of the wheel axle 10 through a connecting bolt hole by a fastening bolt 12. Specifically, when the wheel axle 10 is not horizontal, the hydraulic cylinder can rotate around the horizontal axle pin 7 to adjust the horizontal angle of the hydraulic cylinder, so that the piston rod 21 and the wheel axle 10 are kept coaxial.
And S4, starting the telescopic power cylinder 2, extending or contracting the piston rod 21 of the telescopic power cylinder, applying drawing force to the wheel axle 10 for drawing, and controlling the telescopic power cylinder 2 to keep stable drawing force. Specifically, when the drawing tool in the embodiment is adopted, the hydraulic station is started to provide pressure energy for the hydraulic cylinder, the hydraulic station is controlled to stably supply energy, the pressure of a pressure gauge of the hydraulic station reaches 325bar and is stabilized, and the hydraulic cylinder applies 980kN of stable drawing force to the wheel axle 10.
S5, uniformly heating the shell on the wheel shaft 10 to expand the shell; the stretching power cylinder 2 keeps constant drawing force in the baking process until the wheel axle 10 is completely drawn out. In actual work, when the shell is made of carbon steel, the shell is generally heated to about 250 ℃, a pressure gauge of the hydraulic station is observed in the baking process, and if the pressure drops, the hydraulic station is started to supplement the pressure in time, so that the hydraulic cylinder keeps constant drawing force until the wheel axle 10 is completely drawn out.
And after the wheel shaft 10 is completely pulled out, the shaft end pressing plate 9 is detached, the pulled wheel shaft 10 is taken out, the hydraulic cylinder returns, and the hydraulic station is closed.
From the above, in the drawing tool and the drawing process using the drawing work in the embodiment, the hydraulic cylinder has high degree of freedom, is convenient to adjust, is flexible to use, has a wide application range, has high working efficiency, and is more stable and reliable; in the drawing process, the superposition degree of the action direction of the drawing force provided by the hydraulic cylinder and the axial lead of the wheel shaft 10 is higher, the concentrated action point of the drawing force and the axle center of the wheel shaft tend to be concentric, so that the stress of the wheel shaft 10 of the sintering table is more concentrated, and the drawing is more efficient.
In conclusion, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (9)
1. The drawing process of the sintering trolley wheel shaft is used for drawing the wheel shaft (10) of the sintering trolley out of a trolley body (11), a shell is sleeved on the wheel shaft (10), and the drawing process is characterized in that: the drawing tool comprises a seat frame (1), a telescopic power cylinder (2) which is arranged on the seat frame (1) in a vertically movable mode and a height adjusting device (33), wherein a sleeving through hole (22) is formed in a piston rod (21) of the telescopic power cylinder (2) along the axis, the inner diameter of the sleeving through hole (22) is larger than the outer diameter of a wheel axle (10), and the height adjusting device (33) drives the telescopic power cylinder (2) to move up and down; the automobile wheel shaft is characterized by further comprising a shaft end pressing plate (9) arranged on the rear shaft end face of the piston rod (21), wherein a connecting bolt hole is formed in the shaft end pressing plate (9) and corresponds to a bolt hole in the end face of the wheel shaft (10); the drawing process comprises the following steps:
s1, preparing a drawing tool;
s2, after the sintering trolley is off-line, the sintering trolley is horizontally placed, the wheel shaft (10) keeps a specified distance from the ground, and parts connected with the wheel shaft (10) are protectively removed;
s3, moving the drawing tool to the wheel axle (10), adjusting the height of the telescopic power cylinder (2) through a height adjusting device (33), enabling the sleeving through hole (22) of the piston rod (21) to be approximately coaxial with the center of the wheel axle (10), and sleeving the front end of the sleeving through hole (22) of the piston rod (21) on the wheel axle (10); an axle end pressure plate (9) is arranged at the rear end of the piston rod (21), and a fastening bolt (12) penetrates through a connecting bolt hole to be screwed into a bolt hole in the axle end face of the wheel axle (10);
s4, starting the telescopic power cylinder (2), extending or contracting a piston rod (21) of the telescopic power cylinder to apply drawing force to the wheel shaft (10) for drawing, and controlling the telescopic power cylinder (2) to keep stable drawing force;
s5, uniformly heating the shell on the wheel shaft (10) to enable the shell to expand; the stretching power cylinder (2) keeps constant drawing force in the baking process until the wheel axle (10) is completely drawn out.
2. The drawing process according to claim 1, wherein: and in the step S4, controlling the telescopic power cylinder (2) to keep the drawing force stable at 980kN, and in the step S5, heating the shell to 250 ℃ when the shell is a carbon steel shell.
3. The drawing process according to claim 1, wherein: the telescopic power cylinder (2) is a hydraulic cylinder.
4. The drawing process according to claim 1, wherein: height adjusting device (33) are including vertical arrangement's lead screw (31), rotation axis (32) and drive assembly (34) of connecting lead screw (31) and rotation axis (32), lead screw (31) lower extreme is connected with flexible power cylinder (2), drive lead screw (31) up-and-down motion through drive assembly (34) when rotation axis (32) rotate.
5. The drawing process according to claim 1, wherein: the telescopic power cylinder is characterized by further comprising a connecting piece (4), wherein the connecting piece (4) is connected with a height adjusting device (33), and the telescopic power cylinder (2) is rotatably installed on the connecting piece (4) and is provided with a rotating axis which is perpendicular to the piston axis along the horizontal direction.
6. The drawing process according to claim 5, wherein: the connecting piece (4) includes that two are located the connection curb plate (41) of flexible power cylinder (2) left and right sides respectively, flexible power cylinder (2) left and right sides is connected with two connection curb plates (41) respectively through horizontal pivot (7), and two horizontal pivot (7) are coaxial and arrange along left and right directions.
7. The drawing process according to claim 1, wherein: the telescopic power cylinder is characterized by comprising a vertical sliding rail (5) arranged on a seat frame (1) and a sliding block (6) arranged on the vertical sliding rail (5), wherein the sliding block (6) is vertically fixed with the telescopic power cylinder (2).
8. The drawing process according to claim 7, wherein: the four vertical slide rails (5) are respectively arranged at the four corners of the telescopic power cylinder (2).
9. The drawing process according to claim 1, wherein: the universal solid wheel (8) is arranged below the seat frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010217435.7A CN113441931B (en) | 2020-03-25 | 2020-03-25 | Drawing tool and process for sintering trolley wheel axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010217435.7A CN113441931B (en) | 2020-03-25 | 2020-03-25 | Drawing tool and process for sintering trolley wheel axle |
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| CN113441931A CN113441931A (en) | 2021-09-28 |
| CN113441931B true CN113441931B (en) | 2023-03-17 |
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| CN114083227A (en) * | 2021-12-08 | 2022-02-25 | 二重（德阳）重型装备有限公司 | Flat head cover assembly and disassembly tools |
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| CN2325174Y (en) * | 1998-01-10 | 1999-06-23 | 刘裕德 | Hydraulic device for inserting or withdrawing sleeve or bearing race |
| JP5928730B2 (en) * | 2013-04-22 | 2016-06-01 | トヨタ自動車株式会社 | Power card assembling apparatus and power card assembling method |
| CN103611742A (en) * | 2013-11-26 | 2014-03-05 | 无锡平盛科技有限公司 | Traveling wheel component of take-up and pay-off machine |
| CN205166351U (en) * | 2015-12-14 | 2016-04-20 | 山东电力建设第二工程公司 | Fluid pressure type pivot tensioning device |
| CN106002209B (en) * | 2016-07-26 | 2018-04-20 | 博众精工科技股份有限公司 | One kind hot melt disassembly mechanism |
| CN106289987A (en) * | 2016-10-19 | 2017-01-04 | 山西省交通科学研究院 | A kind of can realize each pilot system to drawing and implementation thereof |
| CN108015519B (en) * | 2016-11-03 | 2019-10-11 | 中冶宝钢技术服务有限公司 | The drawing process covered in blast furnace |
| CN209078659U (en) * | 2018-11-20 | 2019-07-09 | 拜尔液压动力（武汉）股份有限公司 | A kind of vehicle-mounted pulley extractor of large-tonnage |
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