CN111451985B - Opposite vertex opposite pressing mechanism and opposite vertex opposite pressing equipment thereof - Google Patents
Opposite vertex opposite pressing mechanism and opposite vertex opposite pressing equipment thereof Download PDFInfo
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- CN111451985B CN111451985B CN202010283333.5A CN202010283333A CN111451985B CN 111451985 B CN111451985 B CN 111451985B CN 202010283333 A CN202010283333 A CN 202010283333A CN 111451985 B CN111451985 B CN 111451985B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/06—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting or withdrawing sleeves or bearing races
- B25B27/064—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting or withdrawing sleeves or bearing races fluid driven
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Abstract
The invention discloses an opposite-ejecting opposite-pressing mechanism which comprises a prepressing head and an opposite-ejecting head, wherein the prepressing head and the opposite-ejecting head are arranged oppositely, and share the same central axis; the opposite-vertex opposite-pressing equipment comprises the opposite-vertex opposite-pressing mechanism. According to the opposite-top opposite-pressing mechanism, when the bearing is installed, the problem that the product shell is deformed due to the fact that the driving mechanism is stressed in an impacting mode to the product shell is effectively solved through the balance of the upper stress and the lower stress of the driving mechanism, the equipment has the effect which can be achieved by the mechanism, the opposite-top opposite-pressing mechanism can be suitable for multi-site installation of different products, the universality is higher, the horizontal table and the product positioning table can be replaced according to the types of the products, the compatibility of the products is improved, and therefore flexible production is achieved.
Description
Technical Field
The invention belongs to the technical field of machinery, and particularly relates to a butting and pressing mechanism and butting and pressing equipment thereof.
Background
The bearing outer ring is matched with the shell hole by adopting a base shaft system. The degree of tightness of the matching is determined according to the size, the property, the rotating speed and the like of the working load of the bearing. The rotational speed is high, and load is big, and the impact vibration should select tighter cooperation for use when more serious, and the bearing cooperation that the rotational accuracy requires is also tighter. Therefore, when the bearing is assembled with the shell hole, a larger external force is needed to push the bearing into the shell hole, and in the process of assembling the bearing into the shell hole, firstly, the friction force/extrusion force is overcome, and when the friction force/extrusion force is overcome, the external force needs to be applied to the shell, the bearing which is static on the pressure head is pressed into the shell bearing hole through the movement of the shell, and the shell bears all the pressure, so that the shell is easy to deform. Although the original manual hammering installation is eliminated, the press adopting the principle is used for carrying out one-way installation, the shell is always pushed to move through external force, the bearing is pressed into the shell hole, and the shell bears the whole pressure of the press, so that the shell is deformed, the position precision is poor, and the assembly quality of the shell and the box body of the engine is seriously influenced.
Disclosure of Invention
In order to solve the above technical problems, an object of the present invention is to provide an opposite vertex opposite pressing mechanism and an opposite vertex opposite pressing device thereof.
The purpose of the invention is realized as follows:
the utility model provides a to top counterpressure mechanism, its key lies in: including pressure head in advance and opposite vertex pressure head, pressure head in advance and opposite vertex pressure head are just to setting up, and this pressure head in advance and opposite vertex pressure head are with the axis, pressure head in advance and opposite vertex pressure head pass through actuating mechanism's drive, stop motion behind the pressure head contact the casing, and opposite vertex pressure head draws close and impresses the bearing dress casing hole to bearing installation site.
By adopting the structure, the driving mechanism drives the prepressing head to prepress the force bearing surface corresponding to the shell hole, the bearing is placed on the opposite pressing head, the driving mechanism drives the opposite pressing head to go upwards, the bearing is pressed into the shell hole, in the pressing-in process, the pressure of the prepressing head synchronously changes along with the stress change of the opposite pressing head, the stress balance is always kept, in the whole press-fitting process, the pressure always passes through the bearing hole prepressing head bearing surface, the friction/extrusion surface of the bearing moving towards the hole is transmitted to the bearing, until the contact is pressed into the bottom of the hole, the generated pressure only acts on the hole bottom to the prepressing head bearing surface, and the pressure is not applied to other parts of the shell/box part, the shell can be effectively protected, the shell/box part is ensured not to deform due to the pressure, and the press-fitting quality is improved.
According to one scheme, the driving mechanism comprises a prepressing oil cylinder and an opposite-vertex oil cylinder, the prepressing oil cylinder drives the prepressing head to move towards the opposite-vertex pressure head, the prepressing head stops moving after contacting a bearing surface of the shell, the electric control system recognizes that the prepressing head contacts the shell, and the opposite-vertex oil cylinder drives the opposite-vertex pressure head to move towards the prepressing head.
The prepressing oil cylinder and the opposite-propping oil cylinder are not limited to oil cylinders, other driving mechanisms can be adopted, the prepressing oil cylinder and the opposite-propping oil cylinder respectively drive the prepressing head and the opposite-propping head, and the stress balance is ensured.
Preferably, above-mentioned actuating mechanism passes through the support body fixedly, the support body includes an upper fixed plate, bottom plate, stand, last deflector and lower deflector, an upper fixed plate and bottom plate pass through stand fixed connection, pre-compaction hydro-cylinder and opposite vertex hydro-cylinder respectively with an upper fixed plate and bottom plate fixed connection, it fixes respectively with lower deflector to go up the deflector the medial surface of an upper fixed plate and bottom plate to it has the guiding hole to open, pre-compaction head and opposite vertex pressure head are movable respectively and are worn to establish in the guiding hole of an upper deflector and lower deflector.
By adopting the structure, the pre-pressing head and the opposite pressing head are positioned and guided through the upper guide plate and the lower guide plate, and the alignment precision and stability of the pre-pressing head and the opposite pressing head are improved.
In another scheme, the driving mechanism comprises a driving electric cylinder, a C-shaped arm, a bottom plate and a vertical plate; the driving electric cylinder is arranged at the upper end of the C-shaped arm, a telescopic shaft of the driving electric cylinder penetrates through the upper end of the C-shaped arm and is connected with the pre-pressing head or the opposite pressing head, and a positioning column at the lower end of the C-shaped arm is connected with the corresponding opposite pressing head or the pre-pressing head; the C-shaped arm is arranged on the vertical plate through a guide rail and slides up and down, and the bottom plate is vertically fixed at the bottom end of the vertical plate and lifts the C-shaped arm.
By adopting the structure, the assembly process can be completed through one driving electric cylinder, and the driving electric cylinder is not limited to the electric cylinder or other electric pressure machines, the specific principle is that the product is positioned between the upper end and the lower end of the C-shaped arm through the platform, the prepressing head or the counter-pressing head connected with the telescopic end of the driving electric cylinder firstly descends, the prepressing head is contacted with the product shell, the C-shaped arm is wholly stressed and lifted due to the reaction force of the extension of the driving electric cylinder, namely, the counter-pressing head or the prepressing head on the positioning column of the C-shaped arm is used for placing the pressed parts and moves upwards relative to the product shell, the parts are gradually closed towards the upper end of the C-shaped arm, meanwhile, the parts such as the bearing and the like are pressed into the shell hole, when the installation is completed, the lower ends of the driving electric cylinder and the C-shaped arm are pressed and balanced in stress, the shell is not subjected to the impact force from the driving electric cylinder, and the maximum stress of the shell comes from the gravity of the C-shaped arm and the driving electric cylinder, and the lower part can be optimized through a balancing weight or a balancing cylinder, so that the gravity borne by the shell is reduced to the minimum.
Preferably, a fixed pulley is arranged at the top of the vertical plate, and a counterweight device is arranged on the outer side of the vertical plate and connected with the C-shaped arm through a pull rope wound on the fixed pulley.
By adopting the structure, the integral gravity of the structures such as the C-shaped arm, the driving electric cylinder, the pre-pressing head, the opposite pressing head and the like is offset by the balance weight, so that the stress of the product is smaller, and the problem of stress deformation of the product is further solved; and the counterweight device can select direct counterweight blocks, and can also select cylinders, oil cylinders or electric cylinders for balancing stress to be directly connected with the C-shaped arm, so that the same effect can be achieved.
Secondly, a pair of top is to pressing equipment, its key lies in: the device comprises any one of the two schemes of opposite pressing mechanisms. Preferably, the above-mentioned equipment of counterpointing is to pressing, still include the body frame body, adjust the structure of adjusting of counterpointing mechanism horizontal position, adjust the bottom that the body frame body was located to the structure, counterpoint is to pressing the mechanism to locate adjust structurally, should adjust the structure and include two sets of linear guide, two sets linear guide level sets up and mutually perpendicular, one of them set linear guide locates on another set of linear guide and slides along it, counterpoint is to pressing the mechanism to locate upper portion linear guide is last and slides along it. By adopting the structure, the opposite-top opposite-pressing equipment can be fixedly installed on the opposite-top opposite-pressing mechanism through the main frame body, the position of the opposite-top opposite-pressing mechanism is adjusted through the adjusting structure, the horizontal positions of the opposite-top opposite-pressing mechanism are respectively adjusted through the two sets of linear guide rails, the opposite-top opposite-pressing mechanism is aligned and installed at different positions of a product shell, and therefore the installation of a single opposite-top opposite-pressing mechanism on a plurality of sites of the shell is achieved.
Furthermore, a horizontal product positioning table is arranged between the prepressing head and the opposite jacking head. By adopting the structure, the product shell is convenient to position, fix, identify and install.
Further, the top of above-mentioned product location platform is equipped with the horizontal stand, and this horizontal stand is longitudinal movement through the guide pillar, and the casing hole that corresponds the product on this horizontal stand is equipped with a plurality of extension posts that go up, should go up the extension post and wear to establish perpendicularly on the horizontal stand and be equipped with buffer spring, the casing hole that corresponds the product on the product location bench is worn to be equipped with a plurality of lower extension posts perpendicularly, it is fixed with last extension post or lower extension post to press head in advance or to the top, the upper end of going up the extension post and the lower extreme of lower extension post respectively with actuating mechanism's upper and lower drive position butt.
Adopt above-mentioned structure, through last extension post and lower extension post, the extension is connected and is pressed the head in advance or to the top pressure head, shortens the stroke at the flexible position of actuating mechanism, still can be to product predesigned and counterpoint, to the top press direct identification of mechanism and counterpoint on extension post and the lower extension post can, the location discernment is more convenient and accurate.
Furthermore, the horizontal table is connected with a lifting driving device, the lifting driving device comprises a driving cylinder, a moving plate and a guide post, the driving cylinder is not limited to a cylinder or an oil cylinder, the moving plate is located on the linear guide rail at the lower part, the moving plate is parallel and fixed with the horizontal table through the guide post, the driving cylinder is fixed on the moving plate, and the outer end of a telescopic rod of the driving cylinder is connected with the linear guide rail at the lower part.
By adopting the structure, the relative position of the horizontal table is adjusted by the lifting driving device.
Has the advantages that:
according to the opposite-top opposite-pressing mechanism, when the bearing is installed, the problem that the product shell is deformed due to the impact stress of the driving mechanism on the product shell can be effectively solved through the balance of the upper stress and the lower stress of the driving mechanism, opposite-top opposite-pressing equipment has the effect which can be realized by the opposite-top opposite-pressing mechanism, and can be suitable for multi-site installation of different products, the universality is higher, the horizontal table and the product positioning table can be replaced according to the types of the products, the compatibility of multiple products is improved, and therefore flexible production is realized; in addition, the mechanism and the equipment of the invention not only aim at the installation of the bearing, but also can be applied to the press mounting of other similar press mounting parts, such as oil seals, pins, bearing bushes and other products.
Drawings
Fig. 1 is a schematic structural view of a butting and pressing mechanism in embodiment 1 of the present invention;
FIG. 2 is a schematic structural diagram of a butting and pressing mechanism in embodiment 2 of the present invention;
FIG. 3 is a schematic structural diagram of a pair of top-pressing devices in embodiment 3 of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a perspective view of bitmap 3;
description of reference numerals:
the device comprises a pre-pressing head 1, a counter-pressing head 2, a pre-pressing oil cylinder 3, a counter-pressing oil cylinder 4, an upper fixing plate 5a, a lower fixing plate 5b, a vertical column 5C, an upper guide plate 5d, a lower guide plate 5e, an electric driving cylinder 6, a C-shaped arm 7, a positioning column 7a, a guide rail 7b, a bottom plate 8, a vertical plate 9, a fixed pulley 10, a counterweight device 11, a guy cable 12, a main frame 13, an adjusting structure 14, a product positioning table 15, a horizontal table 16, a driving cylinder 16a, a moving plate 16b, a guide column 16C, a guide column 17, an upper extension column 18, a buffer spring 19 and a lower extension column 20.
Detailed Description
The invention is further illustrated by the following examples and figures.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Example 1
As shown in fig. 1: the utility model provides a to pushing up mechanism to pressing, comprises pre-compaction head 1 and to pushing up pressure head 2, pre-compaction head 1 is just to setting up with to pushing up pressure head 2, and this pre-compaction head 1 and to pushing up pressure head 2 with the axis, pre-compaction head 1 and to pushing up pressure head 2 through actuating mechanism's drive, stop motion behind the pre-compaction head contact casing, to pushing up the pressure head to bearing installation site draw close and with the bearing dress casing hole of impressing. The driving mechanism is composed of a prepressing oil cylinder 3 and an opposite-vertex oil cylinder 4, the prepressing oil cylinder 3 drives the opposite-vertex pressure head 1 to move towards the opposite-vertex pressure head 2, and the opposite-vertex oil cylinder 4 drives the opposite-vertex pressure head 2 to move towards the opposite-vertex pressure head 1. Actuating mechanism passes through the support body fixedly, the support body comprises upper fixed plate 5a, bottom plate 5b, stand 5c, upper deflector 5d and bottom deflector 5e, upper fixed plate 5a and bottom plate 5b pass through stand 5c fixed connection, pre-compaction hydro-cylinder 3 with to top hydro-cylinder 4 respectively with upper fixed plate 5a and bottom plate 5b fixed connection, upper deflector 5d and bottom deflector 5e are fixed respectively the medial surface of upper fixed plate 5a and bottom plate 5b to it has the guiding hole to open, pre-compaction head 1 and to top compaction head 2 are passed through in the activity respectively and are established in the guiding hole of upper deflector 5d and bottom deflector 5 e.
Example 2
As shown in fig. 2: the utility model provides a to pushing up mechanism to pressing, comprises pre-compaction head 1 and to pushing up pressure head 2, pre-compaction head 1 is just to setting up with to pushing up pressure head 2, and this pre-compaction head 1 and to pushing up pressure head 2 with the axis, pre-compaction head 1 and to pushing up pressure head 2 through actuating mechanism's drive, stop motion behind the pre-compaction head contact casing, to pushing up the pressure head to bearing installation site draw close and with the bearing dress casing hole of impressing. The driving mechanism consists of a driving electric cylinder 6, a C-shaped arm 7, a bottom plate 8 and a vertical plate 9; the driving electric cylinder 6 is arranged at the upper end of the C-shaped arm 7, a telescopic shaft of the driving electric cylinder 6 penetrates through the upper end of the C-shaped arm 7 and is connected with the prepressing head 1, and a positioning column 7a at the lower end of the C-shaped arm 7 is connected with the corresponding opposite jacking head 2; the C-shaped arm 7 is arranged on the vertical plate 9 through a guide rail 7b and slides up and down, and the bottom plate 8 is vertically fixed at the bottom end of the vertical plate 9 and lifts the C-shaped arm 7. The top of the vertical plate 9 is provided with a fixed pulley 10, the outer side of the vertical plate 9 is provided with a counterweight device 11, and the counterweight device 11 is connected with the C-shaped arm 7 through a guy cable 12 wound on the fixed pulley 10.
Example 3
The opposite vertex opposite pressing equipment taking the opposite vertex opposite pressing mechanism of the embodiment 2 as an example is shown in figures 2, 3, 4 and 5: the device consists of a main frame body 13, an adjusting structure 14 for adjusting the horizontal position of the opposite-butting and opposite-pressing mechanism and the opposite-butting and opposite-pressing mechanism in the embodiment 2. The adjusting structure 14 is arranged at the bottom of the main frame body 13, the opposite-jacking and opposite-pressing mechanism is arranged on the adjusting structure 14, the adjusting structure 14 comprises two sets of linear guide rails, the two sets of linear guide rails are horizontally arranged and are vertical to each other, one set of linear guide rail is arranged on the other set of linear guide rail and slides along the linear guide rail, and the opposite-jacking and opposite-pressing mechanism is arranged on the upper portion of the linear guide rail and slides along the linear guide rail.
As shown in fig. 2, 3, 4 and 5: a horizontal product positioning table 15 is arranged between the prepressing head 1 and the opposite pressing head 2. A horizontal table 16 is arranged above the product positioning table 15, the horizontal table 16 longitudinally moves through a guide post 17, the horizontal table 16 is connected with a lifting driving device, the lifting driving device is composed of a driving cylinder 16a, a moving plate 16b and a guide post 16c, the moving plate 16b is located on the linear guide rail at the lower part, the moving plate 16b is parallel and fixed with the horizontal table 16 through the guide post 16c, the driving cylinder 16a is fixed on the moving plate 16b, and the outer end of a telescopic rod of the driving cylinder 16a is connected with the linear guide rail at the lower part. The casing hole that corresponds the product on the horizontal stand 16 is equipped with a plurality of extension post 18 of going up, should go up extension post 18 and wear to establish perpendicularly on the horizontal stand 16 and be equipped with buffer spring 19, the casing hole that corresponds the product on the product location platform 15 is worn to be equipped with a plurality of lower extension post 20 perpendicularly, it is fixed with last extension post 18 and lower extension post 20 respectively with the head pressure 1 in advance, the upper end of going up extension post 18 and the lower extreme of lower extension post 20 respectively with the reference column 7a butt of the telescopic shaft of drive electric cylinder 6 and the C type arm 7 lower extreme.
Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the claims of the present invention, and such changes as replacing the counter-pressing mechanism of embodiment 1 with the counter-pressing mechanism of embodiment 2 in the counter-pressing device of embodiment 3 fall within the protection scope of the present invention.
Claims (2)
1. The utility model provides a to top equipment of counterpointing, its characterized in that: comprises a butting and pressing mechanism, a main frame body (13) and an adjusting structure (14) for adjusting the horizontal position of the butting and pressing mechanism;
the opposite-ejecting opposite-pressing mechanism comprises a pre-pressing head (1) and an opposite-ejecting pressing head (2), wherein the pre-pressing head (1) and the opposite-ejecting pressing head (2) are arranged oppositely, the pre-pressing head (1) and the opposite-ejecting pressing head (2) share the same central axis, the pre-pressing head (1) and the opposite-ejecting pressing head (2) stop moving after contacting with the shell through the driving of the driving mechanism, and the opposite-ejecting pressing head draws close to a bearing mounting site and presses a bearing into a shell hole;
the driving mechanism comprises a driving electric cylinder (6), a C-shaped arm (7), a bottom plate (8) and a vertical plate (9); the driving electric cylinder (6) is installed at the upper end of the C-shaped arm (7), a telescopic shaft of the driving electric cylinder (6) penetrates through the upper end of the C-shaped arm (7) and is connected with the prepressing head (1) or the opposite jacking head (2), and a positioning column (7a) at the lower end of the C-shaped arm (7) is connected with the corresponding opposite jacking head (2) or the prepressing head (1); the C-shaped arm (7) is arranged on the vertical plate (9) through a guide rail and slides up and down, and the bottom plate (8) is vertically fixed at the bottom end of the vertical plate (9) and lifts the C-shaped arm (7);
the top of the vertical plate (9) is provided with a fixed pulley (10), the outer side of the vertical plate (9) is provided with a counterweight device (11), and the counterweight device (11) is connected with the C-shaped arm (7) through a guy cable (12) wound on the fixed pulley (10);
the adjusting structure (14) is arranged at the bottom of the main frame body (13), the opposite-jacking and opposite-pressing mechanism is arranged on the adjusting structure (14), the adjusting structure (14) comprises two sets of linear guide rails, the two sets of linear guide rails are horizontally arranged and are mutually vertical, one set of linear guide rail is arranged on the other set of linear guide rail and slides along the linear guide rail, and the opposite-jacking and opposite-pressing mechanism is arranged on the linear guide rail at the upper part and slides along the linear guide rail;
a horizontal product positioning table (15) is arranged between the prepressing head (1) and the opposite jacking pressure head (2);
the top of product location platform (15) is equipped with horizontal stand (16), and this horizontal stand (16) is longitudinal movement through guide pillar (17), and the casing hole that corresponds the product on this horizontal stand (16) is equipped with a plurality of extension post (18) of going up, should go up extension post (18) and wear to establish perpendicularly on horizontal stand (16) and be equipped with buffer spring (19), the casing hole that corresponds the product on product location platform (15) is worn to be equipped with a plurality of extension post (20) of going down perpendicularly, it is fixed with last extension post (18) and lower extension post (20) respectively to press head (1) and counterpoint pressure head (2), the upper end of going up extension post (18) and the lower extreme of lower extension post (20) respectively with actuating mechanism's upper and lower drive position butt.
2. A butt-pressing device according to claim 1, wherein: the horizontal table (16) is connected with a lifting driving device, the lifting driving device comprises a driving air cylinder (16a), a moving plate (16b) and guide columns (16c), the moving plate (16b) is located on the linear guide rail at the lower part, the moving plate (16b) is parallel to and fixed with the horizontal table (16) through the guide columns (16c), the driving air cylinder (16a) is fixed on the moving plate (16b), and the outer end of a telescopic rod of the driving air cylinder (16a) is connected with the linear guide rail at the lower part.
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| CN202010283333.5A CN111451985B (en) | 2020-04-13 | 2020-04-13 | Opposite vertex opposite pressing mechanism and opposite vertex opposite pressing equipment thereof |
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| CN202010283333.5A CN111451985B (en) | 2020-04-13 | 2020-04-13 | Opposite vertex opposite pressing mechanism and opposite vertex opposite pressing equipment thereof |
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| CN111451985A CN111451985A (en) | 2020-07-28 |
| CN111451985B true CN111451985B (en) | 2022-03-08 |
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| CN116141254B (en) * | 2023-02-20 | 2023-08-25 | 肇庆市帝盟汽车零部件有限公司 | Integrated full-automatic steering wheel oil seal bearing assembly equipment |
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| US6000134A (en) * | 1998-03-27 | 1999-12-14 | Jerraid; Jack V. | Apparatus and method for preloading antifriction bearings |
| US20020124407A1 (en) * | 2001-03-12 | 2002-09-12 | Ullom Jon J. | Apparatus and method for preloading a bearing using a digital interface |
| CN202622696U (en) * | 2012-04-28 | 2012-12-26 | 江苏新迈机械有限公司 | Bearing pressing-in tool |
| CN203209949U (en) * | 2013-04-19 | 2013-09-25 | 中国兵器工业第二0二研究所 | End plate assembly machine for automatic assembly production line of automobile oil pump support |
| CN104476169A (en) * | 2014-12-01 | 2015-04-01 | 新昌县澄潭镇苗平机械厂 | Bearing assembly machine |
| CN104690539A (en) * | 2015-03-25 | 2015-06-10 | 新昌县城南石氏机械配件厂 | Bearing mounting equipment |
| CN204997614U (en) * | 2015-09-21 | 2016-01-27 | 浙江开拓汽车电器有限公司 | Frock of two -way pressure electric motor rotor bearing |
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| CN205309722U (en) * | 2016-01-06 | 2016-06-15 | 黄安伟 | Pressing device |
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| CN108544214B (en) * | 2018-07-16 | 2020-11-27 | 安徽瑞铁轨道装备有限公司 | Side pulling plate vertical type high-speed train wheel set large gear press-fitting machine |
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| CN103009042A (en) * | 2012-12-31 | 2013-04-03 | 长城汽车股份有限公司 | Press fitting device for guide pipe and seat retainer of engine cylinder head |
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