CN109281949A - A kind of oldham coupling - Google Patents
A kind of oldham coupling Download PDFInfo
- Publication number
- CN109281949A CN109281949A CN201811378688.1A CN201811378688A CN109281949A CN 109281949 A CN109281949 A CN 109281949A CN 201811378688 A CN201811378688 A CN 201811378688A CN 109281949 A CN109281949 A CN 109281949A
- Authority
- CN
- China
- Prior art keywords
- terminal pad
- circular trough
- slot
- coupler
- side wall
- 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.)
- Withdrawn
Links
- 230000008878 coupling Effects 0.000 title claims abstract description 26
- 238000010168 coupling process Methods 0.000 title claims abstract description 26
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 26
- 238000009434 installation Methods 0.000 claims description 2
- 230000033001 locomotion Effects 0.000 abstract description 9
- 239000006185 dispersion Substances 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 244000098674 Pinus cembroides Species 0.000 description 1
- 235000005013 Pinus cembroides Nutrition 0.000 description 1
- 235000008591 Pinus cembroides var edulis Nutrition 0.000 description 1
- 235000015593 Pinus monophylla Nutrition 0.000 description 1
- 235000015594 Pinus parryana Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006880 cross-coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Telephone Set Structure (AREA)
Abstract
The invention discloses a kind of oldham couplings, pass through the first half a coupler, second half a coupler and terminal pad constitute main structure of the invention, driving shaft and driven shaft are connected by the shaft slot of the left and right sides, pass through the first slot, first thread groove, L shape screw rod, second thread groove and screw are by the first half a coupler, second half a coupler and terminal pad are attached fixation, wherein L shape screw rod and the perpendicular relationship of screw, L shape screw rod can be effectively prevented to loosen, pass through the first terminal pad, first mounting blocks, first circular trough, link slot and vee gutter, constitute the main structure of the first terminal pad, the present invention provides a kind of oldham couplings, L shape screw rod and the perpendicular relationship of screw, L shape screw rod can be effectively prevented to loosen, movement and torque transfer between first terminal pad and the second terminal pad, pass through connection Block and gore can reduce the active force acted on the second mounting blocks, realize the dispersion of active force, improve service life.
Description
Technical field
The present invention relates to shaft coupling technical field, specific field is a kind of oldham coupling.
Background technique
Oldham coupling also known as metal sliding cross coupling, sliding block are in circular ring shape, are made of steel or antifriction alloy, ten
Word oldham coupling is lower suitable for revolving speed, transmits the biggish transmission of torque.Oldham coupling is by two axle sleeves and one
Heart sliding block composition.Central slider transmits the element of torque as one, is usually made of engineering plastics, may be selected in special circumstances
Other materials, such as metal material.
However be all made of between the half a coupler and terminal pad of existing oldham coupling and be simply bolted, use one end
Time easily causes bolt looseness, influences using effect, in addition, the transmission effect power of existing terminal pad is more concentrated, service wear
It is larger, it reduces the service life, for this purpose, we have proposed a kind of oldham couplings.
Summary of the invention
The purpose of the present invention is to provide a kind of oldham couplings, to solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme: a kind of oldham coupling, including the first half shaft couplings
Device, the second half a coupler and terminal pad are equipped with terminal pad between first half a coupler and second half a coupler, described
Through being equipped with shaft slot in the middle part of the side wall of first half a coupler and second half a coupler, first half a coupler and
The sidewall symmetry of second half a coupler is equipped with the first slot, and first slot is communicated with the first thread groove, and described first
Screw is installed in thread groove;
The terminal pad includes the first terminal pad and the second terminal pad, the right side wall of first terminal pad and described second
The left side wall of terminal pad is symmetrically connected with L shape screw rod, and the L shape screw rod is inserted into first slot, the side of the L shape screw rod
Wall and it is located in first slot through the second thread groove is equipped with, the screw thread connects second thread groove;
It is integrally formed on the inside of the right side wall of first terminal pad and is connected with the first mounting blocks, the right side of first mounting blocks
Surface middle part is equipped with the first circular trough, is uniformly communicated with one end of link slot on first circular trough, the link slot it is another
One end is communicated with vee gutter, and the left side of first circular trough is communicated with one end of the second circular trough, and described second is round
The other end of slot is communicated with one end of third circular trough, and the other end of the third circular trough is communicated with cross bath;
The second mounting blocks are connected in the middle part of the left side wall of second terminal pad, the side wall of second mounting blocks uniformly connects
It is connected to one end of link block, the other end of the link block is connected with gore, second described in the first circular trough grafting
Mounting blocks, link block described in the link slot grafting, gore described in the vee gutter grafting, second mounting blocks
Inside is equipped with T-bar, and the right side of the T-bar successively extends into second circular trough, the third circular trough and described
Cross bath, the side wall right end of the T-bar are equipped with external screw thread, and second circular trough is interior to connect the T by nut thread
Shape bar is movably installed with cross shelves part in the cross bath.
Preferably, vertical connection between first slot and first thread groove.
Preferably, the internal diameter of first circular trough is greater than the internal diameter of the third circular trough, the third circular trough
Internal diameter is greater than the internal diameter of second circular trough.
Preferably, the number of the gore is six.
Preferably, the right side wall periphery of first terminal pad is integrally formed and is connected with first shell, the first shell
Right side wall be uniformly connected with the first inserted block, the left side wall periphery of second terminal pad, which is integrally formed, is connected with second shell,
The left side wall of the second shell is uniformly provided with the second slot, the first inserted block described in the second slot grafting.
Preferably, the slot inner sidewall of the cross bath is equipped with anti-skid rubber cushion.
Preferably, the cross shelves part is in contact with nut.
Compared with prior art, the beneficial effects of the present invention are: a kind of oldham coupling, passes through the first half a coupler,
Two half a couplers and terminal pad constitute main structure of the invention, connect driving shaft and driven by the shaft slot of the left and right sides
Axis, by the first slot, the first thread groove, L shape screw rod, the second thread groove and screw by the first half a coupler, the second half shaft couplings
Device and terminal pad are attached fixation, wherein L shape screw rod and the perpendicular relationship of screw, L shape screw rod can be effectively prevented, pine occurs
It is dynamic, by the first terminal pad, the first mounting blocks, the first circular trough, link slot and vee gutter, constitute the main body of the first terminal pad
Structure is made up of the main structure of the second terminal pad the second terminal pad, the second mounting blocks, link block and gore, wherein
Second mounting blocks, link block and gore are inserted into the first circular trough, link slot and vee gutter, the first terminal pad and second
Terminal pad is used cooperatively, and then realizes the movement and torque transfer between the first terminal pad and the second terminal pad, passes through link block
The active force acted on the second mounting blocks can be reduced with gore, the dispersion of active force is realized, improves service life, is led to
Cross T-bar, the second circular trough, third circular trough and nut realize the first terminal pad and the second terminal pad is connected and fixed, pass through
Cross bath and cross shelves part limit the motion path in nut loosening direction, prevent nut loosening, guarantee the first terminal pad
The fastness connected with the second terminal pad connects in addition, being made up of first shell, the first inserted block, second shell and the second slot
The protection shell of disk is connect, effective protection terminal pad, the present invention provides a kind of oldham coupling, L shape screw rod and screw are perpendicular
Relationship can be effectively prevented L shape screw rod and loosen, movement and torque transfer between the first terminal pad and the second terminal pad,
The active force acted on the second mounting blocks can be reduced by link block and gore, realizes the dispersion of active force, is improved
Service life.
Detailed description of the invention
Fig. 1 is main view of internal structure of the invention;
The partial enlargement structural representation of A in Fig. 1 Fig. 2 of the invention;
Main structure figure schematic diagram Fig. 3 of the invention;
The right side structural representation of first terminal pad Fig. 4 of the invention;
The right side structural representation of second terminal pad Fig. 5 of the invention;
The left view structural representation of first terminal pad Fig. 6 of the invention.
In figure: the first half a coupler of 1-, the second half a coupler of 2-, 3- terminal pad, the first terminal pad of 301-, 302- second connect
Connect disk, 4- shaft slot, the first slot of 5-, the first thread groove of 6-, 7- screw, 8-L shape screw rod, the second thread groove of 9-, 10- first
Mounting blocks, the first circular trough of 11-, 12- link slot, 13- vee gutter, the second circular trough of 14-, 15- third circular trough, 16- ten
Font groove, the second mounting blocks of 17-, 18- link block, 19- gore, 20-T shape bar, 21- nut, 22- cross shelves part, 23-
First shell, the first inserted block of 24-, 25- second shell.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-6 is please referred to, the present invention provides a kind of technical solution: a kind of oldham coupling, including the first half a coupler 1,
Second half a coupler 2 and terminal pad 3 are equipped with terminal pad, pass through between first half a coupler and second half a coupler
First half a coupler, the second half a coupler and terminal pad constitute main structure of the invention, first half a coupler and described
Through being equipped with shaft slot 4 in the middle part of the side wall of second half a coupler, by the shaft slot of the left and right sides connect driving shaft and
The sidewall symmetry of driven shaft, first half a coupler and second half a coupler is equipped with the first slot 5, first slot
It is communicated with the first thread groove 6, screw 7 is installed in first thread groove;
The terminal pad includes the first terminal pad 301 and the second terminal pad 302, the right side wall of first terminal pad and institute
The left side wall for stating the second terminal pad is symmetrically connected with L shape screw rod 8, and the L shape screw rod is inserted into first slot, the L shape
The side wall of screw rod and it is located in first slot through the second thread groove 9 is equipped with, the screw thread connects second spiral shell
Groove, by the first slot, the first thread groove, L shape screw rod, the second thread groove and screw by the first half a coupler, the second half
Axis device and terminal pad are attached fixation, wherein L shape screw rod and the perpendicular relationship of screw, and the generation of L shape screw rod can be effectively prevented
It loosens, L shape screw rod is inserted into the first slot when connection, and be overlapped the first thread groove and the second thread groove, insert the screws into
In first thread groove and the second thread groove, the first half a coupler, the second half a coupler and terminal pad can be realized and be attached admittedly
It is fixed;
It is integrally formed on the inside of the right side wall of first terminal pad and is connected with the first mounting blocks 10, first mounting blocks
Right surface middle part is equipped with the first circular trough 11, and one end of link slot 12, the connection are uniformly communicated on first circular trough
The other end of slot is communicated with vee gutter 13, and the left side of first circular trough is communicated with one end of the second circular trough 14, institute
The other end for stating the second circular trough is communicated with one end of third circular trough 15, and the other end of the third circular trough is communicated with cross
Shape slot 16 constitutes the first terminal pad by the first terminal pad, the first mounting blocks, the first circular trough, link slot and vee gutter
Main structure;
The second mounting blocks 17 are connected in the middle part of the left side wall of second terminal pad, the side wall of second mounting blocks is uniform
It is connected with one end of link block 18, the other end of the link block is connected with gore 19, the first circular trough grafting institute
State the second mounting blocks, link block described in the link slot grafting, gore described in the vee gutter grafting passes through second and connects
The main structure that disk, the second mounting blocks, link block and gore constitute the second terminal pad is connect, wherein the second mounting blocks, connection
Block and gore are inserted into the first circular trough, link slot and vee gutter, and the first terminal pad and the second terminal pad are used cooperatively,
And then realize movement and torque transfer between the first terminal pad and the second terminal pad, it can be subtracted by link block and gore
Act on the active force on the second mounting blocks less, realize the dispersion of active force, improve service life, second mounting blocks it is interior
Portion is equipped with T-bar 20, and the right side of the T-bar successively extends into second circular trough, the third circular trough and described
Cross bath, the side wall right end of the T-bar are equipped with external screw thread, are threadedly coupled in second circular trough by nut 21 described
T-bar is movably installed with cross shelves part 22 in the cross bath, by T-bar, the second circular trough, third circular trough and
Nut realizes being connected and fixed for the first terminal pad and the second terminal pad, limits nut pine by cross bath and cross shelves part
The motion path in dynamic direction, prevents nut loosening, guarantees the fastness that the first terminal pad is connected with the second terminal pad.
Specifically, vertical connection between first slot and first thread groove, can be effectively prevented L shape screw rod
It loosens.
Specifically, the internal diameter of first circular trough is greater than the internal diameter of the third circular trough, the third circular trough
Internal diameter be greater than second circular trough internal diameter.
Specifically, the number of the gore is six, six gores, which can be reduced, acts on the second installation
Active force on block is realized the dispersion of active force, is improved service life.
Specifically, the right side wall periphery of first terminal pad, which is integrally formed, is connected with first shell 23, described first
The right side wall of shell is uniformly connected with the first inserted block 24, and the left side wall periphery of second terminal pad, which is integrally formed, is connected with second
Shell 25, the left side wall of the second shell are uniformly provided with the second slot, and the first inserted block described in the second slot grafting passes through
First shell, the first inserted block, second shell and the second slot constitute the protection shell of terminal pad, effective protection terminal pad.
Specifically, the slot inner sidewall of the cross bath is equipped with anti-skid rubber cushion, cross is increased by anti-skid rubber cushion
The frictional force of shape slot and cross shelves part, and the two rigid contact is prevented, it improves service life.
Specifically, the cross shelves part is in contact with nut.
Working principle: the present invention constitutes main body of the invention by the first half a coupler, the second half a coupler and terminal pad
Structure connects driving shaft and driven shaft by the shaft slot of the left and right sides, passes through the first slot, the first thread groove, L shape spiral shell
First half a coupler, the second half a coupler and terminal pad are attached fixation by bar, the second thread groove and screw, wherein L shape spiral shell
Bar and the perpendicular relationship of screw, can be effectively prevented L shape screw rod and loosen, by L shape screw rod the first slot of insertion when connection,
And it is overlapped the first thread groove and the second thread groove, it inserts the screws into the first thread groove and the second thread groove, can be realized the
One half a coupler, the second half a coupler and terminal pad are attached fixation, pass through the first terminal pad, the first mounting blocks, the first circle
Shape slot, link slot and vee gutter constitute the main structure of the first terminal pad, pass through the second terminal pad, the second mounting blocks, connection
Block and gore constitute the main structure of the second terminal pad, wherein the second mounting blocks, link block and gore insertion first
In circular trough, link slot and vee gutter, the first terminal pad and the second terminal pad are used cooperatively, so realize the first terminal pad with
Movement and torque transfer between second terminal pad can be reduced by link block and gore and be acted on the second mounting blocks
Active force, realize the dispersion of active force, improve service life, pass through T-bar, the second circular trough, third circular trough and nut
It realizes being connected and fixed for the first terminal pad and the second terminal pad, nut loosening side is limited by cross bath and cross shelves part
To motion path, prevent nut loosening, guarantee the fastness that the first terminal pad connect with the second terminal pad, in addition, passing through the
One shell, the first inserted block, second shell and the second slot constitute the protection shell of terminal pad, effective protection terminal pad, the present invention
A kind of oldham coupling, L shape screw rod and the perpendicular relationship of screw are provided, L shape screw rod can be effectively prevented and loosen, first
Movement and torque transfer between terminal pad and the second terminal pad can be reduced by link block and gore and act on second
Active force on mounting blocks is realized the dispersion of active force, is improved service life.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of oldham coupling, including the first half a coupler (1), the second half a coupler (2) and terminal pad (3), feature exists
In: terminal pad (3) are equipped between first half a coupler (1) and second half a coupler (2), first half a coupler
(1) and the side wall of second half a coupler (2) in the middle part of through be equipped with shaft slot (4), first half a coupler (1) and
The sidewall symmetry of second half a coupler (2) is equipped with the first slot (5), and first slot (5) is communicated with the first thread groove
(6), screw (7) are installed in first thread groove (6);
The terminal pad (3) includes the first terminal pad (301) and the second terminal pad (302), the right side of first terminal pad (301)
Side wall and the left side wall of second terminal pad (302) are symmetrically connected with L shape screw rod (8), and the L shape screw rod (8) is inserted into institute
State the first slot (5), the side wall of the L shape screw rod (8) and be located at first slot (5) in through be equipped with the second thread groove
(9), the screw (7) is threadedly coupled second thread groove (9);
It is integrally formed and is connected with the first mounting blocks (10) on the inside of the right side wall of first terminal pad (301), first installation
The right surface middle part of block (10) is equipped with the first circular trough (11), is uniformly communicated with link slot (12) on first circular trough (11)
One end, the other end of the link slot (12) is communicated with vee gutter (13), and the left side of first circular trough (11) connects
It is connected with one end of the second circular trough (14), the other end of second circular trough (14) is communicated with the one of third circular trough (15)
End, the other end of the third circular trough (15) are communicated with cross bath (16);
It is connected with the second mounting blocks (17) in the middle part of the left side wall of second terminal pad (302), second mounting blocks (17)
Side wall is uniformly connected with one end of link block (18), and the other end of the link block (18) is connected with gore (19), described
Second mounting blocks (17) described in first circular trough (11) grafting, link block (18) described in link slot (12) grafting, described three
The inside of gore (19) described in angle-shaped groove (13) grafting, second mounting blocks (17) is equipped with T-bar (20), the T shape
The right side of bar (20) successively extends into second circular trough (14), the third circular trough (15) and the cross bath
(16), the side wall right end of the T-bar (20) is equipped with external screw thread, is connected in second circular trough (14) by nut (21) screw thread
It connects the T-bar (20), is movably installed with cross shelves part (22) in the cross bath (16).
2. a kind of oldham coupling according to claim 1, it is characterised in that: first slot (5) and described first
Vertical connection between thread groove (6).
3. a kind of oldham coupling according to claim 1, it is characterised in that: the internal diameter of first circular trough (11) is big
It is greater than the interior of second circular trough (14) in the internal diameter of the internal diameter of the third circular trough (15), the third circular trough (15)
Diameter.
4. a kind of oldham coupling according to claim 1, it is characterised in that: the number of the gore (19) is six
It is a.
5. a kind of oldham coupling according to claim 1, it is characterised in that: the right side of first terminal pad (301)
Wall periphery is integrally formed and is connected with first shell (23), and the right side wall of the first shell (23) is uniformly connected with the first inserted block
(24), the left side wall periphery of second terminal pad (302) is integrally formed and is connected with second shell (25), the second shell
(25) left side wall is uniformly provided with the second slot, the first inserted block (24) described in the second slot grafting.
6. a kind of oldham coupling according to claim 1, it is characterised in that: the slot inner sidewall of the cross bath (16)
Equipped with anti-skid rubber cushion.
7. a kind of oldham coupling according to claim 1, it is characterised in that: the cross shelves part (22) and nut
(21) it is in contact.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201811378688.1A CN109281949A (en) | 2018-11-19 | 2018-11-19 | A kind of oldham coupling |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201811378688.1A CN109281949A (en) | 2018-11-19 | 2018-11-19 | A kind of oldham coupling |
Publications (1)
Publication Number | Publication Date |
---|---|
CN109281949A true CN109281949A (en) | 2019-01-29 |
Family
ID=65175964
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201811378688.1A Withdrawn CN109281949A (en) | 2018-11-19 | 2018-11-19 | A kind of oldham coupling |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN109281949A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112145563A (en) * | 2020-09-16 | 2020-12-29 | 徐正涛 | Hardware connecting piece with self-locking function |
-
2018
- 2018-11-19 CN CN201811378688.1A patent/CN109281949A/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112145563A (en) * | 2020-09-16 | 2020-12-29 | 徐正涛 | Hardware connecting piece with self-locking function |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10954784B2 (en) | Shearer cutting unit with double-speed rollers | |
CN109281949A (en) | A kind of oldham coupling | |
CN209385530U (en) | A kind of oldham coupling | |
CN207609732U (en) | A kind of structure-improved chain | |
CN106585276B (en) | Large wheel edge driving axle | |
CN207673741U (en) | A kind of universal connecting shaft | |
CN208263897U (en) | A kind of novel reinforced drive axle | |
CN204458999U (en) | Sleeve roller chain | |
CN203283754U (en) | Die forging Y-shaped rake tooth machine chain | |
CN213541191U (en) | Rigid chain mechanism | |
CN211192161U (en) | Drilling equipment is used in axle sleeve parts machining | |
CN211175311U (en) | Planet pin shaft and speed reducer | |
CN206874605U (en) | A kind of spline guide wheel | |
CN209212945U (en) | A kind of planet wheel spindle and planet carrier combined mechanism | |
CN207375623U (en) | Crane horizontal guiding mechanism | |
CN2434276Y (en) | Scraper type chip removal device | |
CN205823942U (en) | A kind of axle sleeve used for vehicle transmission shaft | |
CN207246265U (en) | A kind of new coupling system for locomotive | |
CN206221607U (en) | A kind of vibration damping driving wheel | |
CN2392948Y (en) | Pin type chain | |
CN206694443U (en) | A kind of novel bearing sleeve | |
CN206682161U (en) | A kind of detachable bearing block | |
CN222022701U (en) | Universal hard connection device for narrow-gauge mining vehicles | |
CN204357971U (en) | A kind of cambered surface sliding block type universal shaft joint | |
CN218408341U (en) | Wheel type chain link for improving and installing trailer chain of tipper and shunting machine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
WW01 | Invention patent application withdrawn after publication | ||
WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190129 |