CN104015157A - Tightly-propping pulling type detaching device for bearing neck bush - Google Patents

Tightly-propping pulling type detaching device for bearing neck bush Download PDF

Info

Publication number
CN104015157A
CN104015157A CN201410246389.8A CN201410246389A CN104015157A CN 104015157 A CN104015157 A CN 104015157A CN 201410246389 A CN201410246389 A CN 201410246389A CN 104015157 A CN104015157 A CN 104015157A
Authority
CN
China
Prior art keywords
stretching
cover
neck bush
bearing neck
stretching cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201410246389.8A
Other languages
Chinese (zh)
Other versions
CN104015157B (en
Inventor
胡树欣
武利为
梁栋
高永祥
康建中
吕志强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
No 5721 Factory of PLA
Original Assignee
No 5721 Factory of PLA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by No 5721 Factory of PLA filed Critical No 5721 Factory of PLA
Priority to CN201410246389.8A priority Critical patent/CN104015157B/en
Publication of CN104015157A publication Critical patent/CN104015157A/en
Application granted granted Critical
Publication of CN104015157B publication Critical patent/CN104015157B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02Hand 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

Abstract

The invention discloses a tightly-propping pulling type detaching device for a bearing neck bush. The tightly-propping pulling type detaching device is used for achieving zero-damage detaching work of the bearing neck bush in the narrow space of a machine body and comprises a tightly-propping sleeve, a guiding supporting sleeve, an annular supporting seat, a pressing plate, a rotation nut assembly and a pull rod. The tightly-propping sleeve is of a split type hinged structure and is assembled with the left end of the pull rod, and the right end of the pull rod is assembled with the rotation nut assembly. The pull rod is sequentially sleeved with the guiding supporting sleeve, the annular supporting seat and the pressing plate from left to right, and the annular supporting seat is assembled with a bearing hole of the machine body. The tightly-propping pulling type detaching device solves the problem that the structural space of the machine body is small and a general tool cannot get into the machine body, damage to the structure of the machine body and the bearing neck bush is avoided, especially, the tightly-propping sleeve is of the hinged split structural design, the bearing neck bush can be accurately and tightly propped and positioned, and the detaching work efficiency of the bearing neck bush is improved.

Description

The provision for disengagement of a kind of bearing neck bush stretching drawing type
Technical field
The present invention relates to the provision for disengagement of a kind of bearing neck bush, the provision for disengagement of especially a kind of bearing neck bush stretching drawing type, belongs to hand-operated tools technical field.
Background technology
As everyone knows, the requirement of the parts assembly precision of aviation aircraft is strict, and therefore, when the operation of aircraft repair and maintenance, the dismounting of parts is one of key links that affect work quality.As shown in Figure 1, in certain type aircraft maintenance process, its wing dismounting rear bearing neck bush 9 can be stayed in axis bearing 8, and in the narrow space of this axis bearing 8 in housing construction, can only extracting tool be deep into the position of this axis bearing 8 by the body dead eye 10 of a diameter Ф 120, therefore use existing general utility tool dismounting bearing neck bush 9 very difficult, not only can cause the damage of housing construction and bearing neck bush 9, and operating efficiency is also very low.
Summary of the invention
The object of the invention is to the drawback for prior art, a kind of accurate positioning, convenient operation are provided, bearing neck bush can be pulled out smoothly from axis bearing, avoid housing construction and bearing neck bush to cause the bearing neck bush stretching drawing type provision for disengagement of damage.
Problem of the present invention realizes with following technical proposals:
The provision for disengagement of a kind of bearing neck bush stretching drawing type, it comprises stretching cover, guide support cover, ring-type supporting seat, pressing plate, rotating nut assembly and pull bar, described stretching cover is split type articulated structure, it and pull bar left end are equipped with, described pull bar right-hand member and rotating nut component assembling, outside at pull bar is also set with guide support cover, ring-type supporting seat and pressing plate from left to right successively, and described ring-type supporting seat and body dead eye are equipped.
The provision for disengagement of above-mentioned bearing neck bush stretching drawing type, described stretching cover comprises stretching cover and lower stretching cover, described upper stretching cover is hinged by Assembly of pin with lower stretching cover, at upper stretching cover outer wall left end, be provided with the upper stretching cover Ka Tai mating with bearing neck bush left side, on upper stretching cover inwall, be provided with the upper stretching cover internal thread mating with pull bar left end, described lower stretching cover outer wall left end is provided with the lower stretching cover Ka Tai mating with bearing neck bush left side, is provided with the lower stretching cover internal thread mating with pull bar left end on lower stretching cover inwall.
The provision for disengagement of above-mentioned bearing neck bush stretching drawing type, the lateral wall of described stretching cover is provided with at least two guide posts, and described guide post one end and stretching cover are spirally connected, and guide post coordinates the guide effect realizing when stretching cover is moved from left to right with guide support cover.
The provision for disengagement of above-mentioned bearing neck bush stretching drawing type, described guide support cover is ladder bushing structure, on the sidewall of its larger diameter end, be provided with one group of pilot hole, described pilot hole is slotted hole structure, and its length is greater than the Minimum sliding distance that bearing neck bush is dismantled from body.
The provision for disengagement of above-mentioned bearing neck bush stretching drawing type, described pull bar left-half is provided with the left side external screw thread mating with upper stretching cover internal thread and lower stretching cover internal thread, in pull bar left-half, be also provided with the thrust shaft shoulder mating with stretching cover inner chamber, at pull bar right-hand member, be provided with the right-hand member external screw thread with rotating nut component matching.
The provision for disengagement of above-mentioned bearing neck bush stretching drawing type, described rotating nut assembly comprises rotating nut body and handgrip, described rotating nut body and the assembling of pull bar right-hand member, described handgrip symmetry is arranged on the both sides of nut body.
The present invention is by pull bar left side external screw thread and stretching cover screw-internal thread fit, pull bar left end is screwed in stretching cover inner chamber, make the upper stretching cover and lower stretching cover distending of articulated structure, bearing neck bush left side laminating in upper stretching cover Ka Tai and lower stretching cover Ka Tai and axis bearing, pull bar, stretching cover are become one with bearing neck bush, realize the stretching effect to bearing neck bush; The present invention is pressed on guide support cover in axis bearing by pressing plate, by rotating nut assembly and pull bar right-hand member, form feed screw nut motion, when the external force on being applied to handgrip makes the rotation of rotating nut assembly, pull bar moves right, thereby band dynamic bearing neck bush is extracted from axis bearing; The present invention is equipped by ring-type supporting seat and body dead eye, for guide support cover provides radial support, by guide post and guide support, putting pilot hole coordinates guide effect is provided while moving from left to right for stretching cover, avoided the rotation of bearing neck bush, thereby guaranteed that bearing neck bush successfully extracts.In a word, the invention solves housing construction space little, the unapproachable difficult problem of general utility tool, avoided the damage of housing construction and bearing neck bush, particularly stretching cover has adopted the design of radial type Split type structure, make the accurate stretching of bearing neck bush location, improved bearing neck bush dismantlement work efficiency.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 is the rigging position schematic diagram of bearing neck bush on body;
Fig. 2 is structural representation of the present invention;
Fig. 3 is the blast structure chart of Fig. 1;
Fig. 4 is the front view of stretching cover;
Fig. 5 is A-A cross-sectional view in Fig. 4;
Fig. 6 is the main cutaway view of upper stretching cover;
Fig. 7 is the main cutaway view of lower stretching cover;
Fig. 8~Figure 10 is course of work schematic diagram of the present invention.
In figure, each list of reference numerals is: 1, stretching cover, 1-1, upper stretching cover, 1-1-1, upper stretching cover Ka Tai, 1-1-2, upper stretching cover internal thread, 1-2, lower stretching cover, 1-2-1, lower stretching cover Ka Tai, 1-2-2, lower stretching cover internal thread, 1-3, Assembly of pin, 2, guide post, 3, guide support cover, 3-1, pilot hole, 4, ring-type supporting seat, 5, pressing plate, 6, rotating nut assembly, 6-1, handgrip, 7, pull bar, 7-1, left side external screw thread, 7-2, right-hand member external screw thread, 7-3, the thrust shaft shoulder, 8, axis bearing, 9, bearing neck bush, 10, body dead eye.
The specific embodiment
Referring to Fig. 2, Fig. 3, the present invention includes stretching cover 1, guide support cover 3, ring-type supporting seat 4, pressing plate 5, rotating nut assembly 6 and pull bar 7, described stretching cover 1 is split type articulated structure, it and pull bar 7 left ends are equipped with, described pull bar 7 right-hand members and 6 assemblings of rotating nut assembly, in the outside of pull bar 7, be also set with successively from left to right guide support cover 3, ring-type supporting seat 4 and pressing plate 5, described ring-type supporting seat 4 is equipped with body dead eye 10.
Referring to Fig. 4~Fig. 7, stretching cover 1 of the present invention comprises stretching cover 1-1 and lower stretching cover 1-2, described upper stretching cover 1-1 and lower stretching cover 1-2 are hinged by Assembly of pin 1-3, at upper stretching cover 1-1 outer wall left end, be provided with the upper stretching cover card platform 1-1-1 mating with bearing neck bush 9 left sides, on upper stretching cover 1-1 inwall, be provided with the upper stretching cover internal thread 1-1-2 mating with pull bar 7 left ends, described lower stretching cover 1-2 outer wall left end is provided with the lower stretching cover card platform 1-2-1 mating with bearing neck bush 9 left sides, on lower stretching cover 1-2 inwall, be provided with the lower stretching cover internal thread 1-2-2 mating with pull bar 7 left ends.
Referring to Fig. 2, Fig. 3, the lateral wall of stretching cover 1 of the present invention is provided with at least two guide posts 2, and described guide post 2 one end and stretching cover 1 are spirally connected, and guide post 2 coordinates the guide effect realizing when stretching cover 1 is moved from left to right with guide support cover 3.
Referring to Fig. 2, Fig. 3, guide support cover 3 of the present invention is ladder bushing structure, is provided with one group of pilot hole 3-1 on the sidewall of its larger diameter end, and described pilot hole 3-1 is slotted hole structure, and its length is greater than the Minimum sliding distance that bearing neck bush 9 is dismantled from body.
Referring to Fig. 2, Fig. 3, pull bar 7 left-half of the present invention are provided with the left side external screw thread 7-1 mating with upper stretching cover internal thread 1-1-2 and lower stretching cover internal thread 1-2-2, in pull bar 7 left-half, be also provided with the thrust shaft shoulder 7-3 mating with stretching cover inner chamber, at pull bar 7 right-hand members, be provided with the right-hand member external screw thread 7-2 mating with rotating nut assembly 6.
Referring to Fig. 2, Fig. 3, rotating nut assembly 6 of the present invention comprises rotating nut body and handgrip 6-1, described rotating nut body and pull bar 7 right-hand member assemblings, and described handgrip 6-1 symmetry is arranged on the both sides of nut body.
Referring to Fig. 8~Figure 10, the course of work of the present invention is:
First by Assembly of pin 1-3, upper stretching cover 1-1 and lower stretching cover 1-2 are assembled into the stretching cover 1 of articulated structure, stretching cover 1 after again assembling being completed is placed in bearing neck bush 9 inner chambers that need dismounting, pull bar 7 left side external screw thread 7-1 are partly screwed in to stretching to be overlapped in 1 inner chamber, growth along with pull bar 7 left side external screw thread 7-1 and upper stretching cover internal thread 1-1-2 and lower stretching cover internal thread 1-2-2 mating part, upper stretching cover 1-1 and lower stretching cover 1-2 are constantly strutted, when upper stretching cover 1-1 arrives extreme position with lower stretching cover 1-2 is softened, upper stretching cover card platform 1-1-1 and lower stretching cover card platform 1-2-1 block the left side of bearing neck bush 9, the stretching location of complete matched bearings neck bush 9, then guide support is overlapped to 3 larger diameter end and be sleeved on bearing neck bush 9 outsides, and its left side is contacted with axis bearing, the smaller diameter end of guide support cover 3 penetrates in the body dead eye 10 of Ф 120, at stretching, overlap the symmetrical guide post 2 of installing on 1 outer wall, make guide post 2 through the pilot hole 3-1 of guide support cover 3, at pull bar 7 right-hand members, be set with pressing plates 5 and rotating nut assembly 6 is installed, by the handgrip 6-1 of rotating nut assembly 6, make rotating nut body coordinate realization to be moved to the left with pull bar right-hand member external screw thread 7-2, pressing plate 5, guide support cover 3 are held out against in axis bearing 8, continue the handgrip 6-1 of operation rotating nut assembly 6, pull bar 7 moves right vertically, and then drive stretching cover 1 and bearing neck bush 9 to move right, final and axis bearing 8 departs from, and bearing neck bush 9 is extracted from axis bearing 8.
By visible to the description of the bearing neck bush stretching drawing type provision for disengagement course of work above, the present invention overlaps 1 screw-internal thread fit by pull bar left side external screw thread 7-1 and stretching, pull bar 7 left ends are screwed in stretching cover inner chamber, make upper stretching cover 1-1 and the lower stretching cover 1-2 distending of articulated structure, bearing neck bush 9 left side laminatings in upper stretching cover card platform 1-1-1 and lower stretching cover card platform 1-2-1 and axis bearing 8, pull bar 7, stretching cover 1 are become one with bearing neck bush 9, realize the stretching effect to bearing neck bush 9; The present invention is pressed on guide support cover 3 in axis bearing 8 by pressing plate 5, by rotating nut assembly 6 and pull bar right-hand member, form feed screw nut motion, when the external force on being applied to handgrip 6-1 makes 6 rotation of rotating nut assembly, pull bar 7 moves right, thereby band dynamic bearing neck bush 9 is extracted from axis bearing 8; The present invention is equipped with body dead eye 10 by ring-type supporting seat 4, for guide support cover 3 provides radial support, by pilot hole 3-1 on guide post 2 and guide support cover 3, coordinates for stretching overlaps 1 guide effect is provided while moving from left to right, avoided the rotation of bearing neck bush 9, thereby guaranteed that bearing neck bush 9 successfully extracts.

Claims (6)

1. bearing neck bush stretching drawing type provision for disengagement, it is characterized in that, it comprises stretching cover (1), guide support cover (3), ring-type supporting seat (4), pressing plate (5), rotating nut assembly (6) and pull bar (7), described stretching cover (1) is split type articulated structure, it and pull bar (7) left end are equipped with, described pull bar (7) right-hand member and rotating nut assembly (6) assembling, outside at pull bar (7) is also set with guide support cover (3) from left to right successively, ring-type supporting seat (4) and pressing plate (5), described ring-type supporting seat (4) is equipped with body dead eye (10).
2. a kind of bearing neck bush stretching drawing type according to claim 1 provision for disengagement, it is characterized in that, described stretching cover (1) comprises stretching cover (1-1) and lower stretching cover (1-2), described upper stretching cover (1-1) is hinged by Assembly of pin (1-3) with lower stretching cover (1-2), at upper stretching cover (1-1) outer wall left end, be provided with the upper stretching cover Ka Tai (1-1-1) mating with bearing neck bush (9) left side, on upper stretching cover (1-1) inwall, be provided with the upper stretching cover internal thread (1-1-2) mating with pull bar (7) left end, described lower stretching cover (1-2) outer wall left end is provided with the lower stretching cover Ka Tai (1-2-1) mating with bearing neck bush (9) left side, on lower stretching cover (1-2) inwall, be provided with the lower stretching cover internal thread (1-2-2) mating with pull bar (7) left end.
3. a kind of bearing neck bush stretching drawing type according to claim 2 provision for disengagement, it is characterized in that, the lateral wall of described stretching cover (1) is provided with at least two guide posts (2), described guide post (2) one end and stretching cover (1) are spirally connected, and guide post (2) coordinates the guide effect realizing when stretching cover (1) is moved from left to right with guide support cover (3).
4. a kind of bearing neck bush stretching drawing type according to claim 3 provision for disengagement, it is characterized in that, described guide support cover (3) is ladder bushing structure, on the sidewall of its larger diameter end, be provided with one group of pilot hole (3-1), described pilot hole (3-1) is slotted hole structure, and its length is greater than the Minimum sliding distance that bearing neck bush (9) is dismantled from body.
5. a kind of bearing neck bush stretching drawing type according to claim 4 provision for disengagement, it is characterized in that, described pull bar (7) left-half is provided with the left side external screw thread (7-1) mating with upper stretching cover internal thread (1-1-2) and lower stretching cover internal thread (1-2-2), in pull bar (7) left-half, be also provided with the thrust shaft shoulder (7-3) mating with stretching cover inner chamber, at pull bar (7) right-hand member, be provided with the right-hand member external screw thread (7-2) mating with rotating nut assembly (6).
6. a kind of bearing neck bush stretching drawing type according to claim 5 provision for disengagement, it is characterized in that, described rotating nut assembly (6) comprises rotating nut body and handgrip (6-1), described rotating nut body and the assembling of pull bar (7) right-hand member, described handgrip (6-1) symmetry is arranged on the both sides of nut body.
CN201410246389.8A 2014-06-05 2014-06-05 The provision for disengagement of a kind of bearing neck bush stretching drawing type Active CN104015157B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410246389.8A CN104015157B (en) 2014-06-05 2014-06-05 The provision for disengagement of a kind of bearing neck bush stretching drawing type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410246389.8A CN104015157B (en) 2014-06-05 2014-06-05 The provision for disengagement of a kind of bearing neck bush stretching drawing type

Publications (2)

Publication Number Publication Date
CN104015157A true CN104015157A (en) 2014-09-03
CN104015157B CN104015157B (en) 2015-11-18

Family

ID=51432308

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410246389.8A Active CN104015157B (en) 2014-06-05 2014-06-05 The provision for disengagement of a kind of bearing neck bush stretching drawing type

Country Status (1)

Country Link
CN (1) CN104015157B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107984427A (en) * 2017-12-01 2018-05-04 中国航发沈阳黎明航空发动机有限责任公司 A kind of aero-engine is with disassembling bushing device and application method in blind hole
CN110403229A (en) * 2018-04-26 2019-11-05 红塔烟草(集团)有限责任公司 The extracting tool of YJ17 cigarette machine feed mandril bearing
CN111577772A (en) * 2020-05-13 2020-08-25 西安交通大学 Electric drawing type bearing ejection device
CN111660258A (en) * 2020-06-19 2020-09-15 赵德运 Device is got to bush clamp
CN112847243A (en) * 2019-11-28 2021-05-28 北京福田康明斯发动机有限公司 Dismounting device of annular work piece

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4724608A (en) * 1986-11-20 1988-02-16 Parrott Ronald J W Extractor tool for bearings, bushings and the like
DE29715780U1 (en) * 1997-09-03 1999-01-07 Arends Berend Puller, preferably for motor vehicle wheel bearings
CN2562937Y (en) * 2002-08-23 2003-07-30 重庆力帆实业(集团)有限公司 Dismantling device for engine bearing
CN201376257Y (en) * 2009-03-20 2010-01-06 上海宝钢设备检修有限公司 Remover for rolling-needle bearing of oil pump of torque converter
CN102642189A (en) * 2012-05-14 2012-08-22 中国第一汽车股份有限公司 Die case extractor
CN202480046U (en) * 2011-12-19 2012-10-10 陕西宝成航空仪表有限责任公司 Special tool for detaching precision small bearing outer ring
CN203863613U (en) * 2014-06-05 2014-10-08 中国人民解放军第五七二一工厂 Tight-holding drawing-type bearing neck bush disassembly tool

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4724608A (en) * 1986-11-20 1988-02-16 Parrott Ronald J W Extractor tool for bearings, bushings and the like
DE29715780U1 (en) * 1997-09-03 1999-01-07 Arends Berend Puller, preferably for motor vehicle wheel bearings
CN2562937Y (en) * 2002-08-23 2003-07-30 重庆力帆实业(集团)有限公司 Dismantling device for engine bearing
CN201376257Y (en) * 2009-03-20 2010-01-06 上海宝钢设备检修有限公司 Remover for rolling-needle bearing of oil pump of torque converter
CN202480046U (en) * 2011-12-19 2012-10-10 陕西宝成航空仪表有限责任公司 Special tool for detaching precision small bearing outer ring
CN102642189A (en) * 2012-05-14 2012-08-22 中国第一汽车股份有限公司 Die case extractor
CN203863613U (en) * 2014-06-05 2014-10-08 中国人民解放军第五七二一工厂 Tight-holding drawing-type bearing neck bush disassembly tool

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107984427A (en) * 2017-12-01 2018-05-04 中国航发沈阳黎明航空发动机有限责任公司 A kind of aero-engine is with disassembling bushing device and application method in blind hole
CN110403229A (en) * 2018-04-26 2019-11-05 红塔烟草(集团)有限责任公司 The extracting tool of YJ17 cigarette machine feed mandril bearing
CN112847243A (en) * 2019-11-28 2021-05-28 北京福田康明斯发动机有限公司 Dismounting device of annular work piece
CN111577772A (en) * 2020-05-13 2020-08-25 西安交通大学 Electric drawing type bearing ejection device
CN111660258A (en) * 2020-06-19 2020-09-15 赵德运 Device is got to bush clamp
CN111660258B (en) * 2020-06-19 2021-04-13 胡彩云 Device is got to bush clamp

Also Published As

Publication number Publication date
CN104015157B (en) 2015-11-18

Similar Documents

Publication Publication Date Title
CN203863613U (en) Tight-holding drawing-type bearing neck bush disassembly tool
CN104015157A (en) Tightly-propping pulling type detaching device for bearing neck bush
CN204997608U (en) Extracting tool of car transmission shaft
CN204248807U (en) A kind of lining assembly tool
CN204094739U (en) A kind of dismounting puller of valve seat
CN104015159A (en) Special tool for disassembling bearing bushing in blind hole
CN203566632U (en) Bearing disassembling tool
CN203901215U (en) Tool for disassembling bearing bush in blind hole
CN204018587U (en) The position limiting structure of discharge arm in numerical control sheet material bender
CN203863339U (en) Airplane assembling tool
CN205184673U (en) Aircraft undercarriage backplate receive and releases pressurized strut piston assembling instrument
CN204295625U (en) A kind of aircraft wing bearing removal special purpose device
CN103551833A (en) Equipment for dismantling gear arranged on shaft of motor in interference fit manner
CN204052465U (en) Horizontal sheet material apparatus for bending
CN203076516U (en) Riveting pressing mould used for bearing assembling
CN205270702U (en) Aeroturbine machine casket riveting set
CN104475593B (en) A kind of transmission input shaft lock ring rushes riveter structure
CN104260051B (en) A kind of lining compaction tool for aircraft rudder surface docking auricle place
CN204076178U (en) A kind of lining compaction tool for aircraft rudder surface docking auricle place
CN103303432A (en) Centering rod of universal joint
CN203804894U (en) Rivet and retainer disassembly die for small bearings
CN102764821A (en) Pressing rivet die capable of being positioned accurately
CN203557081U (en) Bearing assembly fixture of groove drum box shaft
CN203171482U (en) Side plate assembly mold locking device for heat exchanger assembly machine
CN108000433A (en) A kind of coaxial aperture bushing rapid installation device and installation method

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant