CN219339464U - Switch switching device and switch - Google Patents

Switch switching device and switch Download PDF

Info

Publication number
CN219339464U
CN219339464U CN202320412646.5U CN202320412646U CN219339464U CN 219339464 U CN219339464 U CN 219339464U CN 202320412646 U CN202320412646 U CN 202320412646U CN 219339464 U CN219339464 U CN 219339464U
Authority
CN
China
Prior art keywords
bevel gear
rotating
switching device
track
rotary
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.)
Active
Application number
CN202320412646.5U
Other languages
Chinese (zh)
Inventor
肖晓斌
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.)
BYD Co Ltd
Original Assignee
BYD Co Ltd
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 BYD Co Ltd filed Critical BYD Co Ltd
Priority to CN202320412646.5U priority Critical patent/CN219339464U/en
Application granted granted Critical
Publication of CN219339464U publication Critical patent/CN219339464U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Railway Tracks (AREA)

Abstract

The utility model discloses a turnout switching device and a turnout, wherein the turnout switching device comprises: the rotary beam is provided with one end serving as a rotary center end; the translation beam is rotatably connected with the other end of the rotary beam, and the other end of the translation beam is a free end; a transmission mechanism, the transmission mechanism comprising: the transmission shaft is rotatably arranged on the rotating beam, first bevel gears are respectively arranged at the two ends of the transmission shaft, the second bevel gears are fixedly arranged at the rotating center end, the third bevel gears are fixedly connected with the translation beam, and the first bevel gears at the two ends of the transmission shaft are respectively matched with the second bevel gears and the third bevel gears in a transmission mode.

Description

Switch switching device and switch
Technical Field
The utility model relates to the technical field of rails, in particular to a turnout switching device and a turnout.
Background
In the related art, the turnout comprises a rotating beam and a translating beam, one end of the translating beam is connected with the rotating end of the rotating beam, and different channels (double tracks) are formed through the movement of the rotating beam and the translating beam between two fixed beams, so that the switching of the turnout state is completed. However, in the switch, the movement of the translation beam is not well controlled, and after the rotation beam moves in place, the translation beam may not move in place, and the switch state switching is unsuccessful.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the turnout switching device which can enable the rotating beam and the translation beam to synchronously move, and can better control the translation beam so as to smoothly complete the switching of turnout states.
The utility model further provides a turnout.
According to the turnout switching device provided by the embodiment of the first aspect of the utility model, the turnout switching device comprises a rotary beam, wherein one end of the rotary beam is a rotation center end; the translation beam is rotatably connected with the other end of the rotary beam, and the other end of the translation beam is a free end; a transmission mechanism, the transmission mechanism comprising: the transmission shaft is rotatably arranged on the rotating beam, first bevel gears are respectively arranged at the two ends of the transmission shaft, the second bevel gears are fixedly arranged at the rotating center end, the third bevel gears are fixedly connected with the translation beam, and the first bevel gears at the two ends of the transmission shaft are respectively matched with the second bevel gears and the third bevel gears in a transmission mode.
According to the turnout switching device disclosed by the embodiment of the utility model, the transmission mechanism is designed, wherein the first bevel gears are respectively arranged at the two ends of the transmission shaft, the second bevel gear is arranged at the position, which is the rotation center end, of one end of the rotation beam, the third bevel gear fixedly connected with the translation beam is arranged at the position, which is the end, which is connected with the rotation beam, of the translation beam, so that the first bevel gears at the two ends of the transmission shaft are respectively in transmission fit with the second bevel gear and the third bevel gear, when the transmission shaft rotates, the first bevel gears at the two ends of the transmission shaft are respectively in rotation fit with the second bevel gear and the third bevel gear, and as the second bevel gear is fixed at the rotation center end of the rotation beam 1, the third bevel gear is fixedly connected with the translation beam, the rotation Liang Raodi second bevel gear rotates, the translation Liang Gensui rotates, and meanwhile, the second bevel gear and the third bevel gear can generate opposite-rotation motions, so that the third bevel gear drives the translation beam to make the rotation beam and the translation beam synchronously move, and the translation beam can be controlled better, so that the turnout state can be switched smoothly.
According to some embodiments of the utility model, further comprising: and the driving mechanism can drive the transmission shaft to rotate relative to the rotating beam.
According to some embodiments of the utility model, the transmission further comprises: the fixed rotating seat is arranged at the rotating center end and below the second bevel gear, the second bevel gear is fixedly connected with the fixed rotating seat, and the rotating beam can rotate around the second bevel gear and the fixed rotating seat.
According to some embodiments of the utility model, the first running assembly is disposed below the third bevel gear and is in rotational engagement with the third bevel gear.
According to some embodiments of the utility model, the first running assembly comprises: the rotary support comprises a first base, a first roller and a connecting support, wherein the first base is in rotary fit with a third bevel gear and fixed on the rotary beam, one end of the connecting support is connected with the first base, the other end of the connecting support is connected with the rotary beam, and the first roller is rotatably arranged below the first base.
According to some embodiments of the utility model, further comprising: the second walking assembly is arranged below the translation beam and is arranged on one side, away from the rotation beam, of the first walking assembly.
According to some embodiments of the utility model, the second running assembly comprises: the second seat body and second gyro wheel, the second seat body sets up the translation roof beam below and with translation roof beam fixed connection, the second gyro wheel rotationally sets up the second seat body below.
According to some embodiments of the utility model, the transmission shaft is disposed below the rotating beam and extends along the length of the rotating beam, and the transmission shaft is rotatable relative to the rotating beam.
According to some embodiments of the utility model, a mounting bracket is arranged below the rotating beam, and the transmission shaft penetrates through the mounting bracket and is rotatable relative to the mounting bracket.
According to some embodiments of the utility model, the projected shape of the translational beam on the lower surface tapers in a length direction from the one end to the other end.
A switch according to an embodiment of the second aspect of the present utility model includes: the first track beam is a curved beam; the second track beam is a straight beam and is arranged at intervals with the first track beam; and the turnout switching device is characterized in that the rotating beam and the translation beam are arranged between the first track beam and the second track beam, and the rotating beam and the translation beam can swing to be consistent with the curve direction of the first track beam and form a first double track with the first track beam, or the rotating beam and the translation beam can swing to be consistent with the straight line direction of the second track beam and form a second double track with the second track beam.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a plan view of a switch switching device according to an embodiment of the present utility model switched to a straight state;
fig. 2 is a perspective view of the switch switching device according to the embodiment of the present utility model switched to a straight state;
fig. 3 is a schematic structural view of a switch switching device according to an embodiment of the present utility model;
fig. 4 is a schematic view of a partial structure of a switch switching device according to an embodiment of the present utility model;
fig. 5 is a plan view of the switch switching device according to the embodiment of the present utility model switched to the curved state;
fig. 6 is a perspective view of a switch switching device according to an embodiment of the present utility model switched to a curved state.
Reference numerals:
100. a switch switching device;
1. a rotating beam; 11. a rotation center end; 12. a mounting bracket;
2. a translational beam; 21. a free end;
3. a transmission mechanism; 31. a transmission shaft; 311. a first bevel gear; 32. a second bevel gear; 33. a third bevel gear; 34. fixing the rotating seat;
4. a first travel assembly; 41. a first base; 42. a first roller; 43. a connecting bracket;
5. a second running assembly; 51. a second seat body; 52. a second roller;
200. a first rail beam; 300. and a second rail beam.
Detailed Description
Embodiments of the present utility model will be described in detail below, by way of example with reference to the accompanying drawings.
A switch switching device and a switch thereof according to an embodiment of the present utility model will be described with reference to fig. 1 to 6.
As shown in fig. 3 and 4, the switch switching device 100 includes: a rotating beam 1, a translation beam 2 and a transmission mechanism 3.
One end of the rotating beam 1 is a rotation center end 11, one end of the translating beam 2 is rotatably connected to the other end of the rotating beam 1, and the other end of the translating beam 2 is a free end 21. In this way, one end of the rotation beam 1 is set as the rotation center end 11, the other end of the translation beam 2 is set as the free end 21, and the rotation beam 1 and the translation beam 2 can swing around the rotation center end 11.
The transmission mechanism 3 includes: the transmission shaft 31, the second bevel gear 32 and the third bevel gear 33, the transmission shaft 31 is rotatably arranged on the rotary beam 1, the two ends of the transmission shaft 31 are respectively provided with a first bevel gear 311, the second bevel gear 32 is fixedly arranged at the rotary center end 11, the third bevel gear 33 and the movable beam 2 are fixedly connected, and the first bevel gears 311 at the two ends of the transmission shaft 31 are respectively in transmission fit with the second bevel gear 32 and the third bevel gear 33.
When the transmission shaft 31 rotates, the first bevel gears 311 at two ends of the transmission shaft 31 are respectively in running fit with the second bevel gear 32 and the third bevel gear 33, and as the second bevel gear 32 is fixed at the rotation center end 11 of the rotary beam 1, the third bevel gear 33 is fixedly connected to the rotary beam 2, so that the rotary beam 1 rotates around the second bevel gear 32, and the rotary beam 2 rotates along with the rotary beam 1, at the same time, the second bevel gear 32 and the third bevel gear 33 generate movement with opposite directions, so that the third bevel gear 33 drives the rotary beam 2 to swing in the opposite directions to the rotary beam 1, and thus, the rotary beam 1 and the rotary beam 2 can jointly form a curve structure or a straight structure through the swinging of the rotary beam 1, thereby realizing the switching of the state of the turnout switching device 100.
The translational beam 2 and the rotational beam 1 shown in fig. 1 and 2 are straight positions of the switch switching device 100, and the translational beam 2 and the rotational beam 1 shown in fig. 5 and 6 are curved positions of the switch switching device 100.
In addition, one end of the translational beam 2 is connected with the other end of the rotational beam 1 through a rotation pair, so that the translational beam 2 and the rotational beam 1 are rotatably connected, and the translational beam 2 is ensured to swing along with the swing of the rotational beam 1.
Therefore, the transmission mechanism 3 is designed into a bevel gear transmission structure, under the rotation of the transmission shaft 31, the first bevel gears 311 at two ends of the transmission shaft 31 are respectively in transmission fit with the second bevel gears 32 and the third bevel gears 33, so that the rotating beam 1 rotates around the second bevel gears 32 at the rotating center end 11, the translating beam 2 rotates along with the rotating beam 1, and meanwhile, the third bevel gears 33 drive the translating beam 2 to swing in the opposite direction to the rotating direction of the rotating beam 1, and therefore the switch of the straight line position and the curve position of the switch switching device 100 is achieved. The turnout switching device 100 of the utility model utilizes the transmission mode of the transmission mechanism to enable the rotary beam and the translational beam to synchronously move, can better control the translational beam to smoothly finish the switching of turnout states, has simple structure, can effectively reduce noise and avoids the requirement of complex installation precision.
In some embodiments, the transmission shaft 31 may be manually driven to rotate to switch the switch device 100 between the straight position and the curved position.
In some embodiments, the switch switching device 100 may further include: and the driving mechanism can drive the transmission shaft 31 to rotate relative to the rotary beam 1. So, can drive transmission shaft 31 through actuating mechanism and rotate, improve the rotation stationarity of transmission shaft 31, saved manpower and time, effectively improve the transmission efficiency of actuating mechanism 3.
Therefore, the drive shaft 31 is driven to perform forward rotation and reverse rotation, thereby switching between the straight line position and the curved line position of the switch switching device 100.
As shown in connection with fig. 3 and 4, the transmission mechanism 3 further includes: the fixed rotating seat 34, the fixed rotating seat 34 is arranged at the rotating center end 11, and the fixed rotating seat 34 is arranged below the second bevel gear 32, and the second bevel gear 32 is fixedly connected with the fixed rotating seat 34, and the rotating beam 1 can rotate around the second bevel gear 32 and the fixed rotating seat 34.
In this way, the fixed rotating seat 34 is provided at the rotating center end 11 of the rotating beam 1, and the second bevel gear 32 is fixedly connected to the fixed rotating seat 34, so that the rotating beam 1 can stably rotate around the second bevel gear 32 and the fixed rotating seat 34, and the abrasion of the second bevel gear 32 on the ground can be avoided, thereby prolonging the service life of the second bevel gear 32.
As shown in fig. 4, the switch switching device 100 further includes a first traveling assembly 4, and the first traveling assembly 4 is disposed below the third bevel gear 33 and is rotatably engaged with the third bevel gear 33. In this way, the first travelling assembly 4 is arranged below the third bevel gear 33, so that on one hand, the third bevel gear 33 can be prevented from being worn on the ground, and on the other hand, the translational beam 2 can smoothly swing on the ground, the swinging efficiency is improved, and the friction noise between the translational beam and the ground is reduced.
Specifically, the first running assembly 4 includes: the first seat 41, the first roller 42 and the connecting bracket 43, the first seat 41 is in rotary fit with the third bevel gear 33, the first seat 41 is fixed on the rotary beam 1, one end of the connecting bracket 43 is connected to the first seat 41, the other end is connected to the rotary beam 1, and the first roller 42 is rotatably arranged below the first seat 41.
Thus, when the transmission shaft 31 rotates to drive the third bevel gear 33 and the translational beam 2 to rotate, the first seat 41 is rotationally engaged with the third bevel gear 33, that is, the first seat 41 provides a reliable rotation center end for the third bevel gear 33. And, the one end fixed connection first pedestal 41 of linking bridge 43, the other end fixed connection rotary beam 1 to make first pedestal 41 be fixed in rotary beam 1, like this, do benefit to translation roof beam 2 and follow rotary beam 1 and swing, like this, when having realized that translation roof beam 2 follows rotary beam 1 and swings, translation roof beam 2 and third bevel gear 33 make the swing with rotary beam 1 opposite direction around first pedestal 41, thereby can realize the switching of sharp position or curve position.
Further, the switch switching device 100 further includes: the second running component 5, the second running component 5 is arranged below the translation beam 2 and is arranged on one side of the first running component 4, which is away from the rotation beam 1. So, still be equipped with second walking subassembly 5 in the below of walking beam 2, further make things convenient for the swing of walking beam 2, of course, the quantity of second walking subassembly 5 can be according to the length of walking beam 2 and design.
Specifically, the second running assembly 5 includes: the second seat body 51 and the second gyro wheel 52, second seat body 51 sets up the below at the translation roof beam 2 to, second seat body 51 and translation roof beam 2 fixed connection, second gyro wheel 52 rotationally sets up the below at second seat body 51. In this way, the second seat 51 is fixedly connected below the translational beam 2, and the second roller 52 is rotatably disposed below the second seat 51, so as to facilitate the translational beam 2 to swing.
In some embodiments, the transmission shaft 31 is disposed below the rotation beam 1 and extends along the length direction of the rotation beam 1, and the transmission shaft 31 is rotatable relative to the rotation beam 1.
Specifically, a mounting bracket 12 is provided below the rotating beam 1, and a transmission shaft 31 is provided through the mounting bracket 12 and rotatable relative to the mounting bracket 12. Wherein, be equipped with the mounting hole on installing support 12, transmission shaft 31 wears to establish on installing support 12 through the mounting hole to can rotate relative installing support 12, thereby under the rotation of transmission shaft 31, the first bevel gear 311 at its both ends respectively with second bevel gear 32 and third bevel gear 33 transmission cooperation.
Further, the projected shape of the translational beam 2 on the lower surface tapers in the length direction from one end to the other end. The other end of the translational beam 2 is the free end 21, so that the direction from one end to the other end of the translational beam 2 is gradually thinned, the translational beam 2 is beneficial to swinging, and meanwhile, the transition fit between the free end of the translational beam 2 and the corresponding track beam is beneficial to.
A switch according to an embodiment of the second aspect of the present utility model includes: the first track beam 200, the second track beam 300, and the switch switching device 100.
The first track beam 200 is a curved beam, the second track beam 300 is a straight beam, and is arranged at intervals from the first track beam 200, the rotary beam 1 and the translational beam 2 are arranged between the first track beam 200 and the second track beam 300, and the rotary beam 1 and the translational beam 2 can swing to be consistent with the curved direction of the first track beam 200 and form a first double track with the first track beam 200; or the rotating beam 1 and the translating beam 2 may swing to coincide with the straight direction of the second track beam 300 and form a second double track with the second track beam 300.
As shown in fig. 5 and 6, when the railway vehicle is bent in, the rotating beam 1 and the translating beam 2 may be swung to coincide with the curved direction of the first track beam 200, thereby forming a first double track with the first track beam 200; as shown in fig. 1 and 2, when the railway vehicle goes out of the curve/goes into straight running, the rotating beam 1 and the translating beam 2 may be swung to coincide with the straight direction of the second track beam 300 and form a second double track with the second track beam 300.
According to the turnout switching device 100, the transmission mode of the transmission mechanism 3 is utilized, so that the rotating beam and the translation beam synchronously move, the translation beam can be better controlled to smoothly finish the switching of turnout states, the structure is simple, the noise can be effectively reduced, and the requirement of complex installation precision is avoided.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (11)

1. A switch switching device, comprising:
a rotating beam (1), wherein one end of the rotating beam (1) is a rotating center end (11);
a translation beam (2), wherein one end of the translation beam (2) is rotatably connected to the other end of the rotation beam (1), and the other end of the translation beam (2) is a free end (21);
a transmission mechanism (3), the transmission mechanism (3) comprising: the transmission shaft (31), second bevel gear (32) and third bevel gear (33), transmission shaft (31) rotationally set up just both ends are provided with first bevel gear (311) respectively on rotary beam (1), second bevel gear (32) set firmly in center of rotation end (11), third bevel gear (33) with translation roof beam (2) fixed connection, first bevel gear (311) at transmission shaft (31) both ends respectively with second bevel gear (32) with third bevel gear (33) transmission cooperation.
2. The switch switching device of claim 1, further comprising: and the driving mechanism can drive the transmission shaft (31) to rotate relative to the rotary beam (1).
3. Switch switching device according to claim 1, characterized in that the transmission (3) further comprises: the fixed rotating seat (34), fixed rotating seat (34) set up in rotation center end (11) and set up the below of second bevel gear (32), second bevel gear (32) with fixed rotating seat (34) fixed connection, rotatory roof beam (1) can around second bevel gear (32) with fixed rotating seat (34) is rotatory.
4. The switch switching device of claim 1, further comprising: the first travelling assembly (4) is arranged below the third bevel gear (33) and is in rotary fit with the third bevel gear (33).
5. Switch switching device according to claim 4, characterized in that said first travelling assembly (4) comprises: the rotary support comprises a first base body (41), a first roller (42) and a connecting support (43), wherein the first base body (41) is in rotary fit with the third bevel gear (33), one end of the connecting support (43) is connected with the first base body (41) and the other end of the connecting support is connected with the rotary beam (1), and the first roller (42) is rotatably arranged below the first base body (41).
6. The switch device of claim 4, further comprising: the second walking assembly (5), the second walking assembly (5) set up in the below of walking beam (2) and set up in the one side that first walking assembly (4) deviates from rotary beam (1).
7. Switch switching device according to claim 6, characterized in that said second travelling assembly (5) comprises: the second seat body (51) and second gyro wheel (52), second seat body (51) set up the below of translation roof beam (2) and with translation roof beam (2) fixed connection, second gyro wheel (52) rotationally set up the below of second seat body (51).
8. Switch switching device according to claim 1, characterized in that the drive shaft (31) is arranged below the rotating beam (1) and extends in the longitudinal direction of the rotating beam (1), the drive shaft (31) being rotatable relative to the rotating beam (1).
9. The turnout switching device according to claim 8, wherein a mounting bracket (12) is arranged below the rotary beam (1), and the transmission shaft (31) is arranged through the mounting bracket (12) in a penetrating manner and is rotatable relative to the mounting bracket (12).
10. Switch device according to claim 1, characterized in that the projected shape of the translational beam (2) on the lower surface tapers in the length direction from the one end to the other end.
11. A switch, comprising:
a first track beam (200), the first track beam (200) being a curved beam;
a second track beam (300), the second track beam (300) being a straight beam and being spaced apart from the first track beam (200);
and the switch switching device according to any one of claims 1-10, wherein the rotating beam (1) and the translating beam (2) are arranged between the first track beam (200) and the second track beam (300), wherein the rotating beam (1) and the translating beam (2) can swing to be consistent with the curve direction of the first track beam (200) and form a first double track with the first track beam (200), or wherein the rotating beam (1) and the translating beam (2) can swing to be consistent with the straight line direction of the second track beam (300) and form a second double track with the second track beam (300).
CN202320412646.5U 2023-02-24 2023-02-24 Switch switching device and switch Active CN219339464U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320412646.5U CN219339464U (en) 2023-02-24 2023-02-24 Switch switching device and switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320412646.5U CN219339464U (en) 2023-02-24 2023-02-24 Switch switching device and switch

Publications (1)

Publication Number Publication Date
CN219339464U true CN219339464U (en) 2023-07-14

Family

ID=87100812

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202320412646.5U Active CN219339464U (en) 2023-02-24 2023-02-24 Switch switching device and switch

Country Status (1)

Country Link
CN (1) CN219339464U (en)

Similar Documents

Publication Publication Date Title
CN103221611A (en) Branching device, and center guide-type track-based transportation system
US5499583A (en) Railway switch
CN202225798U (en) Automatic translational retractable pedal
CN101264769A (en) Rotary orbit shuttle device
CN219339464U (en) Switch switching device and switch
CN112832069A (en) Switch assembly
CN108660871B (en) Single-track turnout component and rail assembly with it
CN104328716A (en) Rotary rail reversing device and rail with reversing device
CN218466211U (en) Turnout switch
CN101898566A (en) Stacker track transferring device and track used by same
CN116180512A (en) Suspension type monorail turnout
CN212796903U (en) High-speed magnetic suspension turnout floating type supporting driving device
CN212560951U (en) Turnout rail removes fixing device
CN214648320U (en) Suspended track assembly
CN112301809B (en) Single-track switch, single-track with single-track switch and track traffic system
CN204489868U (en) Driverless operation rail vehicle
CN204325815U (en) Swinging track reversing arrangement and there is the track of this reversing arrangement
CN109208395B (en) Three-throw turnout structure and straddle type track system with same
CN208855763U (en) Mobile device
CN219839896U (en) Switch switching device and turnout switch
CN109204344B (en) Trolley assembly for driving turnout beam to move and track assembly
JP2007518625A (en) Wiper system for road vehicles
CN220022511U (en) Compact cam steering type tracking trolley
EP3571099B1 (en) Reduced arc windshield wiper system for a vehicle
CN108457541B (en) Double-slide rail guide structure and door inner handle comprising same

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant