CN214831941U - Front swing frame mechanism for horizontally pushing and erecting mechanical bridge - Google Patents
Front swing frame mechanism for horizontally pushing and erecting mechanical bridge Download PDFInfo
- Publication number
- CN214831941U CN214831941U CN202023234748.8U CN202023234748U CN214831941U CN 214831941 U CN214831941 U CN 214831941U CN 202023234748 U CN202023234748 U CN 202023234748U CN 214831941 U CN214831941 U CN 214831941U
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- swing frame
- oil cylinder
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- 230000007246 mechanism Effects 0.000 title claims abstract description 33
- 230000000712 assembly Effects 0.000 claims abstract description 6
- 238000000429 assembly Methods 0.000 claims abstract description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 230000002708 enhancing effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses a front swing frame mechanism for horizontally pushing and erecting a mechanized bridge, which comprises a base component, an upper swing frame component, a swing arm oil cylinder, a swing frame pin shaft component and a bolt component; the bottom of the base component is fixedly arranged on the chassis truck and is provided with two swing frame hinged seats which are arranged at intervals along the horizontal direction; the bottom end of the upper swing frame assembly is hinged to the two swing frame hinge seats through a swing frame pin shaft assembly, the top end of the upper swing frame assembly is fixedly provided with two oppositely arranged bolt assemblies, and the middle part of the upper swing frame assembly is provided with an oil cylinder support; the bottom end of the swing arm oil cylinder is hinged to the chassis vehicle, and the top end of the swing arm oil cylinder is hinged to the oil cylinder support through a hinged shaft and used for controlling the upper swing frame assembly to swing relative to the base assembly between an upright state and a horizontal state; and the two bolt components are provided with bolts which can stretch along the horizontal direction, and the bolts are used for being matched with pin holes of the bridge sections in an inserting manner. The front swing frame mechanism has the advantages of controlling the lifting function of the upper bridge section, being high in space utilization rate, reliability and safety.
Description
Technical Field
The utility model relates to a mechanized bridge technical field, concretely relates to horizontal pushing erects preceding pendulum mechanism of mechanized bridge.
Background
When the mechanical bridge is erected by horizontal pushing, the upper bridge section and the lower bridge section are in a stacked state at the beginning, in order to realize the connection of the upper bridge section and the lower bridge section, the two bridge sections in the stacked state need to be converted into an unfolded state, namely, the lower bridge section needs to be pushed out from the bottom of the upper bridge section, so that the lower bridge section and the upper bridge section are arranged side by side, and the subsequent bridge erecting process is completed. Therefore, it is urgently needed to provide a device capable of realizing the lifting and descending of the upper bridge section in the process of horizontally pushing and erecting the mechanical bridge.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a horizontal push erects preceding pendulum mechanism of mechanized bridge has bridge joint raising and lowering functions, space utilization height, reliability and security height on the control.
The utility model adopts the following specific technical proposal:
a front swing frame mechanism for horizontally pushing and erecting a mechanical bridge comprises a base assembly, an upper swing frame assembly, a swing arm oil cylinder, a swing frame pin shaft assembly and a bolt assembly;
the base assembly and the upper swing frame assembly are both of frame structures;
the bottom of the base component is fixedly arranged on the chassis truck and is provided with two swing frame hinged seats which are arranged at intervals along the horizontal direction;
the bottom end of the upper swing frame assembly is hinged to the two swing frame hinged seats through a swing frame pin shaft assembly, the top end of the upper swing frame assembly is fixedly provided with two oppositely arranged bolt assemblies, and the middle part of the upper swing frame assembly is provided with an oil cylinder support;
the bottom end of the swing arm oil cylinder is hinged to the chassis truck, and the top end of the swing arm oil cylinder is hinged to the oil cylinder support through a hinged shaft and used for controlling the upper swing frame assembly to swing relative to the base assembly between an upright state and a horizontal state;
two the bolt subassembly all is provided with the bolt that can follow the horizontal direction and stretch out and draw back, the bolt is used for pegging graft the cooperation with the pinhole of bridge section.
Furthermore, the bolt assembly comprises an oil cylinder fixedly arranged on the upper swing frame assembly and a bolt fixedly connected with a piston rod of the oil cylinder;
the oil cylinder is used for driving the bolt to stretch.
Furthermore, the swing frame pin shaft assembly comprises a swing frame pin shaft extending along the horizontal direction and a self-lubricating bearing sleeved on the peripheral surface of the swing frame pin shaft;
the upper swing frame assembly further comprises an upper swing frame structure, two oil cylinder sleeve seats arranged at the top end of the upper swing frame structure and two hinged supports arranged at the bottom end of the upper swing frame structure;
the oil cylinder sleeve seat and the hinged support are provided with axial through holes;
the bolt can be arranged in an axial through hole of the oil cylinder sleeve seat in a sliding manner along the axial direction of the oil cylinder sleeve seat;
the swing frame pin shaft and the self-lubricating bearing can be rotatably arranged in the axial through hole of the hinged support.
Furthermore, the upper swing frame structure comprises two vertical beams which extend in the vertical direction and are arranged in parallel, and a top cross beam and a bottom cross beam which are fixedly connected between the two vertical beams and are arranged in parallel;
the oil cylinder support is fixedly connected to the surface of one side, facing the swing arm oil cylinder, of the bottom cross beam;
the oil cylinder sleeve seat is embedded at the top ends of the two vertical beams;
the hinged support is embedded in the bottom ends of the two vertical beams.
Furthermore, the upper swing frame structure also comprises a plurality of reinforcing ribs and two safety stoppers;
the reinforcing ribs are arranged at the joints of the vertical beams and the top cross beam and the bottom cross beam and are used for enhancing the structural strength of the vertical beams and the top cross beam and the bottom cross beam;
and the surface of one side of each vertical beam, which deviates from the top cross beam, is fixedly connected with the safety stop block.
Furthermore, the base assembly further comprises a frame-shaped base, a limit stop and a fixed seat;
the swing frame hinged seat and the limit stop block are fixedly connected to the frame-shaped base;
the fixing seat is fixedly connected to the bottom end of the frame-shaped base.
Still further, the rocker hinge mount is formed by a binaural mount.
Furthermore, the double-lug seat is provided with two lug plates which are arranged in parallel;
the self-lubricating bearing is positioned between the two ear plates;
the swing frame pin shaft assembly further comprises reinforcing end plates which are sleeved on the outer peripheral surfaces of the swing frame pin shafts and fixedly connected to the ear plates.
Furthermore, each bolt component also comprises a reinforcing ring plate fixedly connected with the peripheral surface of the oil cylinder support and the vertical beam.
Furthermore, the oil cylinder is fixedly installed on one side surface of the vertical beam, which is far away from the top cross beam, through a bolt.
Has the advantages that:
the front swing frame mechanism of the horizontal-pushing mechanical bridge is supported on the chassis vehicle through the base component and the swing arm oil cylinder, the upper swing frame component is hinged on the base component and the swing arm oil cylinder, and two bolt components are arranged at the top end of the upper swing frame component; when a bridge is built, the upper swing frame assembly is in inserted fit with a pin hole of the bridge section through a telescopic bolt to realize connection of the upper bridge section, and the upper swing frame assembly is driven to swing through a swing arm oil cylinder to realize lifting and descending of the upper bridge section, so that the lower bridge section can be pushed out from the bottom of the upper bridge section, and smooth erection of a horizontal-pushing erection mechanical bridge is guaranteed; the upper swing frame assembly is hinged to the base assembly and the swing arm oil cylinder, so that the front swing frame mechanism occupies small space and has high space utilization rate; the upper swing frame assembly is driven to swing through the swing arm oil cylinder, and meanwhile, the upper swing frame assembly is hinged to the base assembly, so that the upper swing frame assembly works reliably and safely; therefore, the front swing frame mechanism has the function of controlling the lifting of the upper bridge section, and is high in space utilization rate, reliability and safety.
Drawings
Fig. 1 is a front view of the front swing frame mechanism of the present invention;
FIG. 2 is a left side view of the front swing frame mechanism of FIG. 1;
FIG. 3 is a schematic structural view of an upper swing frame assembly of the front swing frame mechanism of FIG. 1;
FIG. 4 is a schematic view of a base assembly of the front swing frame mechanism of FIG. 1;
FIG. 5 is a schematic view of a latch assembly mounting structure of the front swing frame mechanism of FIG. 1;
fig. 6 is a schematic view of a connecting structure of a swing frame pin shaft assembly of the front swing frame mechanism in fig. 1.
Wherein, 1-base component, 2-upper swing frame component, 3-swing arm oil cylinder, 4-swing frame pin shaft component, 5-bolt component, 6-articulated shaft, 11-swing frame articulated seat, 12-frame-shaped base, 13-limit stop, 14-fixed seat, 15-lug plate, 21-oil cylinder support seat, 22-oil cylinder sleeve seat, 23-articulated support seat, 24-axial through hole, 25-vertical beam, 26-top beam, 27-bottom beam, 28-reinforcing rib, 29-safety stop block, 41-swing frame pin shaft, 42-self-lubricating bearing, 43-reinforcing end plate, 51-bolt, 52-oil cylinder, 53-reinforcing ring plate
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings by way of examples.
The utility model provides a front swing frame mechanism for horizontally pushing and erecting a mechanized bridge, which comprises a base component 1, an upper swing frame component 2, a swing arm oil cylinder 3, a swing frame pin shaft component 4 and a pin component 5, as shown in the structures of figures 1 and 2; as shown in the structures of fig. 3 and 4, the base assembly 1 and the upper swing frame assembly 2 are both frame structures;
as shown in the structures of fig. 2 and 3, the bottom of the base assembly 1 is fixedly mounted on a chassis (not shown in the figure), and is provided with two swing frame hinge seats 11 arranged at intervals along the horizontal direction;
as shown in the structures of fig. 1 and 3, the bottom end of the upper swing frame assembly 2 is hinged to two swing frame hinged seats 11 through a swing frame pin shaft assembly 4, the top end is fixedly provided with two oppositely arranged bolt assemblies 5, and the middle part is provided with an oil cylinder support 21;
as shown in the structure of fig. 2, the bottom end of the swing arm cylinder 3 is hinged to the chassis truck, and the top end is hinged to the cylinder support 21 through a hinge shaft 6, and is used for controlling the upper swing frame assembly 2 to swing relative to the base assembly 1 between an upright state and a horizontal state; the swing arm oil cylinder 3 drives the upper swing frame assembly 2 to do circular motion around the hinged position of the upper swing frame assembly and the base assembly 1 in the extending and retracting processes;
as shown in the structure of fig. 5, the two plug pin assemblies 5 are each provided with a plug pin 51 capable of extending and retracting in the horizontal direction, and the plug pins 51 are used for being in plug-in fit with pin holes of bridge sections (not shown in the figure). In the configuration of fig. 5, the latch 51 is in a retracted state and retracted within the upper swing frame assembly 2. The bolt component 5 can comprise an oil cylinder 52 fixedly arranged on the upper swing frame component 2 and a bolt 51 fixedly connected with a piston rod of the oil cylinder 52; the cylinder 52 is used for driving the bolt 51 to extend and retract. The bolt assembly 5 can control the extension and retraction of the bolt 51 through the oil cylinder 52, and the bolt 51 and the pushing pin action of the bridge section are realized by matching with the pin hole of the bridge section.
The specific working principle of the front swing frame mechanism is as follows: when the two bridge sections are in a stacked state, the upper swing frame assembly 2 is in a position II in fig. 2, at the moment, pin holes of the upper bridge section are aligned with the bolt assembly 5, and the oil cylinder 52 in the bolt assembly 5 drives the bolt 51 to extend out to complete the action of the bolt 51; when the swing frame oil cylinder 52 extends, the upper swing frame component 2 makes anticlockwise circular motion by taking the swing frame pin shaft component 4 as a circle center, and stops when reaching the position I, and the upper bridge joint is lifted along with the upward swing of the upper swing frame component 2; the other end of the upper bridge section can be provided with a roller and other similar devices so that the upper bridge section can slide on the lower bridge section when the lower bridge section is pushed out; after the lower bridge section is pushed out, the swing frame oil cylinder 52 retracts, simultaneously, the upper swing frame assembly 2 performs clockwise circular motion by taking the swing frame pin shaft assembly 4 as a circle center, and stops when reaching a position III, and after the connection of the two bridge sections is completed, the oil cylinder 52 in the bolt assembly 5 drives the bolt 51 to retract to complete the pin withdrawing action.
The front swing frame mechanism is supported on the chassis vehicle through a base assembly 1 and a swing arm oil cylinder 3, an upper swing frame assembly 2 is hinged on the base assembly 1 and the swing arm oil cylinder 3, and two bolt assemblies 5 are arranged at the top end of the upper swing frame assembly 2; when a bridge is built, the upper swing frame assembly 2 is in inserted fit with a pin hole of the bridge section through the telescopic plug pin 51 to realize connection of the upper bridge section, and the swing arm oil cylinder 3 drives the upper swing frame assembly 2 to swing so as to realize lifting and descending of the upper bridge section, so that the lower bridge section can be pushed out from the bottom of the upper bridge section, and smooth erection of a horizontal-pushing erection mechanized bridge is guaranteed; the upper swing frame assembly 2 is hinged to the base assembly 1 and the swing arm oil cylinder 3, so that the front swing frame mechanism occupies small space and has high space utilization rate; the upper swing frame assembly 2 is driven to swing through the swing arm oil cylinder 3, and meanwhile, the upper swing frame assembly 2 is hinged to the base assembly 1, so that the upper swing frame assembly 2 works reliably and safely; therefore, the front swing frame mechanism has the function of controlling the lifting of the upper bridge section, and is high in space utilization rate, reliability and safety.
As shown in the structure of fig. 6, the swing frame pin assembly 4 includes a swing frame pin 41 extending along the horizontal direction and a self-lubricating bearing 42 sleeved on the outer peripheral surface of the swing frame pin 41; as shown in the structure of fig. 3, the upper swing frame assembly 2 further includes an upper swing frame structure, two cylinder sleeve seats 22 disposed at the top end of the upper swing frame structure, and two hinged supports 23 disposed at the bottom end of the upper swing frame structure; the oil cylinder sleeve seat 22 and the hinged support 23 are both provided with axial through holes 24; the bolt 51 can be installed in the axial through hole 24 of the cylinder sleeve seat 22 in a sliding manner along the axial direction of the cylinder sleeve seat 22; the rocker pin 41 and the self-lubricating bearing 42 are rotatably mounted in the axial through hole 24 of the pivoting support 23. The oil cylinder sleeve seat 22 can also be provided with a step surface, and the axial limit and the radial limit between the oil cylinder sleeve seat and the cross beam of the upper swing frame structure are realized through the step surface, so that the connection strength between the oil cylinder sleeve seat 22 and the upper swing frame structure is improved.
As shown in the structure of fig. 3, the upper swing frame structure includes two vertical beams 25 extending in the vertical direction and arranged in parallel, and a top cross beam 26 and a bottom cross beam 27 fixedly connected between the two vertical beams 25 and arranged in parallel; the oil cylinder support 21 is fixedly connected to the surface of one side of the bottom cross beam 27 facing the swing arm oil cylinder 3; the oil cylinder sleeve seat 22 is embedded at the top ends of the two vertical beams 25; the articulated supports 23 are embedded in the bottom ends of the two vertical beams 25.
As shown in the structure of fig. 3, the upper swing frame structure further includes a plurality of reinforcing ribs 28 and two safety stoppers 29; a plurality of reinforcing ribs 28 are provided at the joints of the vertical beams 25 with the top cross beam 26 and the bottom cross beam 27 for reinforcing the structural strength of the vertical beams 25 with the top cross beam 26 and the bottom cross beam 27; a safety stop 29 is fixedly connected to the surface of each vertical beam 25 on the side facing away from the top transverse beam 26.
Because the vertical beam 25 deviates from the top cross beam 26, the surface of one side is fixedly connected with the safety stop 29, and in the process that the upper swing frame assembly 2 moves from the position I to the position II, when the bolt assembly 5 accidentally breaks off the pin to cause the bridge section to fall freely, the safety stop 29 of the upper swing frame structure can play a role in protecting the cab.
As shown in the structure of fig. 4, the base assembly 1 further includes a frame-shaped base 12, a limit stop 13 and a fixing seat 14; the swing frame hinged seat 11 and the limit stop 13 are both fixedly connected to the frame-shaped base 12, and the limit stop 13 is used for limiting the upper swing frame; the fixing seat 14 is fixedly connected to the bottom end of the frame-shaped base 12, and the fixing seat 14 is used for fixedly mounting the base assembly 1 on the chassis.
As shown in the structure of fig. 4, the swing frame hinge seat 11 can be formed by a double lug seat; the double lug seats are provided with two lug plates 15 which are arranged in parallel; the self-lubricating bearing 42 is located between the two ear plates 15; as shown in fig. 6, the swing frame pin assembly 4 further includes a reinforcing end plate 43 disposed on the outer peripheral surface of the swing frame pin 41 and fixedly connected to each ear plate 15. The reinforcing end plate 43 is located between the end face of the self-lubricating bearing 42 and the ear plate 15, and the structural strength of the swing frame hinging seat 11 of the base assembly 1 can be improved through the reinforcing end plate 43, so that the safety of the front swing frame mechanism in the bridge erecting process is improved.
As shown in the structure of fig. 5, each latch pin assembly 5 further includes a reinforcing ring plate 53 fixedly connecting the outer peripheral surface of the cylinder support 21 and the vertical beam 25, and the cylinder 52 is fixedly mounted on a side surface of the vertical beam 25 facing away from the top cross beam 26 by means of bolts or screws.
Because the oil cylinder 52 is fixedly arranged on the vertical beam 25, the bolt 51 can be driven by the oil cylinder 52 to extend and retract along the horizontal direction, so that the front swing frame mechanism is hinged with the bridge section, and the bridge section can be kept to have rotational freedom while being connected with the bridge section.
In summary, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A front swing frame mechanism for horizontally pushing and erecting a mechanical bridge is characterized by comprising a base assembly, an upper swing frame assembly, a swing arm oil cylinder, a swing frame pin shaft assembly and a bolt assembly;
the base assembly and the upper swing frame assembly are both of frame structures;
the bottom of the base component is fixedly arranged on the chassis truck and is provided with two swing frame hinged seats which are arranged at intervals along the horizontal direction;
the bottom end of the upper swing frame assembly is hinged to the two swing frame hinged seats through a swing frame pin shaft assembly, the top end of the upper swing frame assembly is fixedly provided with two oppositely arranged bolt assemblies, and the middle part of the upper swing frame assembly is provided with an oil cylinder support;
the bottom end of the swing arm oil cylinder is hinged to the chassis truck, and the top end of the swing arm oil cylinder is hinged to the oil cylinder support through a hinged shaft and used for controlling the upper swing frame assembly to swing relative to the base assembly between an upright state and a horizontal state;
two the bolt subassembly all is provided with the bolt that can follow the horizontal direction and stretch out and draw back, the bolt is used for pegging graft the cooperation with the bolt hole of bridge section.
2. The front swing frame mechanism according to claim 1, wherein the latch assembly comprises an oil cylinder fixedly mounted to the upper swing frame assembly and a latch fixedly connected to a piston rod of the oil cylinder;
the oil cylinder is used for driving the bolt to stretch.
3. The front swing frame mechanism according to claim 2, wherein the swing frame pin assembly comprises a swing frame pin extending in the horizontal direction and a self-lubricating bearing sleeved on the outer peripheral surface of the swing frame pin;
the upper swing frame assembly further comprises an upper swing frame structure, two oil cylinder sleeve seats arranged at the top end of the upper swing frame structure and two hinged supports arranged at the bottom end of the upper swing frame structure;
the oil cylinder sleeve seat and the hinged support are provided with axial through holes;
the bolt can be arranged in an axial through hole of the oil cylinder sleeve seat in a sliding manner along the axial direction of the oil cylinder sleeve seat;
the swing frame pin shaft and the self-lubricating bearing can be rotatably arranged in the axial through hole of the hinged support.
4. The front swing frame mechanism according to claim 3, wherein the upper swing frame structure comprises two vertical beams extending in a vertical direction and arranged in parallel, and a top cross beam and a bottom cross beam fixedly connected between the two vertical beams and arranged in parallel;
the oil cylinder support is fixedly connected to the surface of one side, facing the swing arm oil cylinder, of the bottom cross beam;
the oil cylinder sleeve seat is embedded at the top ends of the two vertical beams;
the hinged support is embedded in the bottom ends of the two vertical beams.
5. The front swing frame mechanism according to claim 4, wherein the upper swing frame structure further comprises a plurality of reinforcing ribs and two safety stops;
the reinforcing ribs are arranged at the joints of the vertical beams and the top cross beam and the bottom cross beam and are used for enhancing the structural strength of the vertical beams and the top cross beam and the bottom cross beam;
and the surface of one side of each vertical beam, which deviates from the top cross beam, is fixedly connected with the safety stop block.
6. The front swing frame mechanism of claim 4, wherein the base assembly further comprises a frame-shaped base, a limit stop, and a fixed base;
the swing frame hinged seat and the limit stop block are fixedly connected to the frame-shaped base;
the fixing seat is fixedly connected to the bottom end of the frame-shaped base.
7. The forward swing frame mechanism of claim 6, wherein the swing frame hinge mount is formed by a binaural mount.
8. The forward swing frame mechanism of claim 7, wherein the binaural mount is provided with two ear plates arranged in parallel;
the self-lubricating bearing is positioned between the two ear plates;
the swing frame pin shaft assembly further comprises reinforcing end plates which are sleeved on the outer peripheral surfaces of the swing frame pin shafts and fixedly connected to the ear plates.
9. The front swing frame mechanism of claim 8, wherein each latch assembly further comprises a reinforcing ring plate fixedly connecting the outer peripheral surface of the cylinder support to the vertical beam.
10. The front swing frame mechanism according to any one of claims 4 to 9, wherein the oil cylinder is fixedly mounted to a side surface of the vertical beam facing away from the top cross beam by means of a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023234748.8U CN214831941U (en) | 2020-12-28 | 2020-12-28 | Front swing frame mechanism for horizontally pushing and erecting mechanical bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023234748.8U CN214831941U (en) | 2020-12-28 | 2020-12-28 | Front swing frame mechanism for horizontally pushing and erecting mechanical bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214831941U true CN214831941U (en) | 2021-11-23 |
Family
ID=78870002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023234748.8U Withdrawn - After Issue CN214831941U (en) | 2020-12-28 | 2020-12-28 | Front swing frame mechanism for horizontally pushing and erecting mechanical bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214831941U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112726408A (en) * | 2020-12-28 | 2021-04-30 | 中国船舶重工集团应急预警与救援装备股份有限公司 | Front swing frame mechanism for horizontally pushing and erecting mechanical bridge |
-
2020
- 2020-12-28 CN CN202023234748.8U patent/CN214831941U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112726408A (en) * | 2020-12-28 | 2021-04-30 | 中国船舶重工集团应急预警与救援装备股份有限公司 | Front swing frame mechanism for horizontally pushing and erecting mechanical bridge |
| CN112726408B (en) * | 2020-12-28 | 2024-07-12 | 中国船舶重工集团应急预警与救援装备股份有限公司 | Front swing frame mechanism of mechanized bridge is established to flat push frame |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20211123 Effective date of abandoning: 20240712 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20211123 Effective date of abandoning: 20240712 |