CN210561781U - Bridge emergency supporting, unloading and overhauling all-in-one machine - Google Patents
Bridge emergency supporting, unloading and overhauling all-in-one machine Download PDFInfo
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- CN210561781U CN210561781U CN201921082788.XU CN201921082788U CN210561781U CN 210561781 U CN210561781 U CN 210561781U CN 201921082788 U CN201921082788 U CN 201921082788U CN 210561781 U CN210561781 U CN 210561781U
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Abstract
The utility model discloses an emergent uninstallation of supporting of bridge and maintenance all-in-one, include: the supporting mechanism comprises a longitudinal beam, a pair of first cross beams and two pairs of vertical telescopic supporting columns, the longitudinal beam is arranged along the central axis direction of the bridge to be constructed, the pair of first cross beams are arranged on the upper portion of the longitudinal beam at intervals in a direction perpendicular to the central axis direction of the bridge to be constructed, and the two pairs of first supporting columns are respectively vertically arranged on the lower portions of the two ends of the longitudinal beam; the moving device can move along the road surface below the bridge to be constructed, a lifting part capable of vertically lifting is arranged at the top of the moving device, and the top end of the moving device is detachably connected with the bottom of the longitudinal beam; when the supporting mechanism is positioned on the moving device, the supporting column can not be in contact with the road surface; and the moving device moves to the position below the bridge to be constructed so as to enable the supporting mechanism to lift and support the bridge to be constructed. The utility model has the characteristics of low traffic influence, quick safe equipment, but wide application in the emergent maintenance engineering field of bridge.
Description
Technical Field
The utility model relates to an emergent maintenance engineering field of bridge. More specifically speaking, the utility model relates to an emergent uninstallation of supporting of bridge and maintenance all-in-one.
Background
Along with the rapid development of the traffic facilities in China, the traffic volume is greatly increased, the traveling density and the vehicle load are larger and larger, the bearing capacity and the durability of part of urban bridges are reduced, the operation safety is influenced, the maintenance operation can be carried out after part of structures need to be supported and unloaded, and the bridge needs to be rapidly and emergently maintained after being locally damaged due to accidental impact.
At present, bridge bottom maintenance vehicles are relatively common maintenance equipment, but do not have a supporting and unloading function, and the bridge maintenance vehicle positioned on a bridge floor is an external load which is unfavorable for safety of a damaged bridge, is complex to operate and has certain potential safety hazards; the operation of the maintenance vehicle at the bottom of the bridge needs to be interrupted, and the requirement of supporting and unloading the bridge to be maintained cannot be met; the bridge bottom is adopted to set up a support to support and unload the bridge through a jack, but the setting up consumes long time, and needs to seal traffic, so that the quick and emergency characteristics of bridge maintenance under the existing traffic condition cannot be achieved.
SUMMERY OF THE UTILITY MODEL
It is an object of the present invention to solve at least the above problems and to provide at least the advantages which will be described later.
The utility model also aims at providing a bridge emergency support uninstallation and maintenance all-in-one of low traffic influence, quick safe equipment.
In order to realize that the utility model discloses these objects and other advantages according to the utility model provides an emergent support uninstallation of bridge and maintenance all-in-one, include:
the supporting mechanism comprises a longitudinal beam, a pair of first cross beams and two pairs of vertically telescopic first supporting columns, the longitudinal beam is arranged along the central axis direction of the bridge to be constructed, the pair of first cross beams are arranged at the upper part of the longitudinal beam at intervals in a direction perpendicular to the central axis direction of the bridge to be constructed, the two pairs of first supporting columns are respectively vertically arranged at the lower parts of the two ends of the longitudinal beam, and each pair of first supporting columns are symmetrically arranged around the central axis of the longitudinal beam;
the moving device can move along the road surface below the bridge to be constructed, a lifting part capable of vertically lifting is arranged at the top of the moving device, and the top end of the moving device is detachably connected with the bottom of the longitudinal beam; the length of the first support column is set as follows: when the supporting mechanism is located on the moving device, the first supporting column can be not in contact with the road surface, and when the top of the supporting mechanism is abutted to the bottom of the bridge to be constructed, the first supporting column can be abutted to the road surface.
Preferably, the support mechanism further comprises:
the at least three upper distribution beams are respectively arranged on the upper part of each first cross beam at intervals along the direction vertical to the central axis of the cross beam;
the leveling block detachably spans the upper part of the upper distribution beam along the direction vertical to the central axis of the bridge to be constructed, and the upper part of the leveling block is matched with the bottom of the bridge to be constructed;
the pair of lower distribution beams are respectively arranged at the lower parts of the two ends of the longitudinal beam, any one lower distribution beam is arranged perpendicular to the central axis of the longitudinal beam, and the pair of first support columns are respectively arranged at the lower parts of the two ends of the lower distribution beam;
and the pad beam is arranged at the top of the mobile device, and the upper part of the pad beam is detachably connected with the lower part of the longitudinal beam.
Preferably, the first cross beam comprises at least two rows of first bailey beams which are arranged in parallel on a horizontal plane, the first bailey beams are detachably connected by three first bailey frames, the first bailey frames are arranged in a direction perpendicular to the central axis of the longitudinal beam, and the three first bailey frames are arranged at intervals in the direction of the central axis of the longitudinal beam;
the longitudinal beams comprise at least three rows of second Bailey beams which are arranged in parallel on a horizontal plane, the second Bailey beams are detachably connected by two second Bailey frames which are parallel and parallel, and the second Bailey frames are arranged in parallel to the central axis of the bridge to be constructed;
the adjacent two first Bailey beams or the two second Bailey beams are detachably connected, and the length of each second Bailey beam is smaller than the distance between the adjacent piers of the bridge to be constructed.
Preferably, the moving device comprises two moving vehicles which are detachably connected to the right lower parts of the pair of first cross beams through the cushion beams and the longitudinal beams respectively.
Preferably, the bridge emergency support uninstallation and maintenance all-in-one machine further comprises:
the second cross beams are parallel to the first cross beams, are arranged on the upper parts of the longitudinal beams at intervals and are positioned between the first cross beams;
the second support columns are arranged between the two pairs of first support columns on the lower part of the longitudinal beam at intervals;
the second cross beam and the first cross beam are identical in structure, and the second supporting column and the first supporting column are identical in structure.
Preferably, a fixed ladder with guardrails is arranged below the longitudinal beam, the upper part of the longitudinal beam is provided with a pedal at the position without a cross beam, and safety guardrails are arranged around the pedal.
The utility model discloses at least, include following beneficial effect:
the utility model solves the problems of insufficient mechanization and standardization and low emergency efficiency in the prior art, and solves the temporary supporting and unloading problems before, during and after rapid maintenance and reinforcement after bridge damage;
the utility model provides a beam bottom construction platform based on a mobile device support, which realizes the building problem of a bridge maintenance reinforcement and emergency repair platform under low traffic influence;
thirdly, the utility model discloses the maintenance to the different component damages of bridge is consolidated, has studied urban bridge quick maintenance under the different emergent countermeasure systems and has consolidated emergency device's suitability, finally forms low traffic influence and collects quick support uninstallation, construction platform function device and the specification of use in an organic whole down, promotes the emergent, the disaster prevention of urban bridge maintenance ability in the aspect of reducing the calamity of preventing disaster comprehensively.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a front view of an emergency supporting, unloading and overhauling all-in-one machine for a bridge according to one embodiment of the present invention;
fig. 2 is a side view of the bridge emergency support unloading and maintenance all-in-one machine according to one embodiment of the present invention;
fig. 3 is the utility model discloses a technical scheme's emergent support uninstallation of bridge and maintenance all-in-one's top view.
Description of reference numerals: 1. a stringer; 102. a second bailey frame; 2. a first cross member; 201. a first bailey frame; 3. an upper distribution beam; 4, a lower distribution beam; 42-a second lower distribution beam; 5. leveling blocks; 6. a first support column; 62. a second support column; 7. a bolster; 8. a mobile device; 9. a bridge to be constructed; 10. pier studs; 11. a road surface.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
As shown in fig. 1-3, the utility model provides an emergent uninstallation of supporting of bridge and maintenance all-in-one, include:
the supporting mechanism comprises a longitudinal beam 1, a pair of first cross beams 2 and two pairs of vertically telescopic first supporting columns 6, wherein the longitudinal beam 1 is arranged along the central axis direction of a bridge 9 to be constructed, the pair of first cross beams 2 are arranged at the upper part of the longitudinal beam 1 at intervals in a direction perpendicular to the central axis direction of the bridge 9 to be constructed, the two pairs of first supporting columns 6 are respectively vertically arranged at the lower parts of two ends of the longitudinal beam 1, and each pair of first supporting columns 6 is symmetrically arranged around the central axis of the longitudinal beam 1;
the moving device 8 can move along a pavement 11 below the bridge 9 to be constructed, a lifting part capable of vertically lifting is arranged at the top of the moving device 8, and the top end of the lifting part is detachably connected with the bottom of the longitudinal beam 1; the length of the first support column 6 is set as: when the supporting mechanism is located on the moving device 8, the first supporting column 6 may not contact with the road surface 11, and when the top of the supporting mechanism abuts against the bottom of the bridge 9 to be constructed, the first supporting column 6 may abut against the road surface 11.
In the technical scheme, the mobile device 8 transports the supporting mechanism to a designated position below the bridge 9 to be constructed, in the transporting process, the first supporting column is not in contact with the road surface and does not interfere with the road surface, the supporting mechanism is controlled to be jacked by the mobile device 8, the top of the supporting mechanism is propped against the bottom of the bridge 9 to be constructed, the first supporting column 6 can be controlled to stretch and retract by a hydraulic oil cylinder or a jack, the lower end of the first supporting column 6 is propped against the road surface 11, the supporting mechanism is born by the mobile device 8 instead, the load of the bridge 9 to be constructed at the upper part is born, and the emergency supporting and unloading of the bridge; in the process that the supporting mechanism is jacked, the sensor senses and measures the space attitude (relative vertical displacement of each angular point) of the bridge 9 to be constructed, the pressure of each supporting point of the supporting mechanism, the inclination angle of the supporting mechanism and the stress of the supporting mechanism, and once the parameters exceed the standard (the pre-set early warning value), a safety early warning signal is sent out, so that the lifting of the moving device 8 or the stretching of the first supporting column 6 is stopped.
In another aspect, the support mechanism further includes:
as shown in fig. 2, at least three upper distribution beams 3 are respectively provided on the upper portion of each first cross member 2 in a direction perpendicular to the plane of the paper, and the three upper distribution beams 3 are provided at intervals in the left-right direction of the plane of the paper;
as shown in fig. 1, the leveling block 5 is detachably arranged in the direction perpendicular to the plane of the sheets in the upper part of the upper distribution beam 3; the upper part of the leveling block 5 is matched with the bottom of the bridge 9 to be constructed;
as shown in fig. 3, a pair of lower distribution beams 4 respectively provided at lower portions of both ends of the longitudinal beam 1, either one of the lower distribution beams 4 being provided in the up-down direction of the paper plane, a pair of first support columns 6 respectively provided at lower portions of both ends of the one lower distribution beam 4;
as shown in fig. 1, a pad beam 7 is provided on the top of the moving device 8 in a direction perpendicular to the plane of the paper, and the upper portion of the pad beam 7 is detachably connected to the lower portion of the longitudinal beam 1.
In the technical scheme, the upper distribution beam 3, the lower distribution beam 4, the leveling block 5 and the pad beam 7 are all used for providing stable stress surfaces for all parts of the bridge emergency support unloading and overhauling all-in-one machine.
In another technical scheme, the first cross beam 2 comprises at least two rows of first bailey beams which are arranged in parallel on a horizontal plane, the first bailey beams are detachably connected by three first bailey frames 201, the first bailey frames 201 are arranged in a direction perpendicular to the central axis of the longitudinal beam 1, the three first bailey frames 201 are arranged at intervals along the central axis of the longitudinal beam 1, the first cross beam in fig. 1 is composed of two rows of first bailey beams, and in the actual construction process, the first cross beams can be constructed according to the number of the first bailey beams required to meet the construction requirement;
the longitudinal beam 1 comprises at least three rows of second Bailey beams which are arranged in parallel on a horizontal plane, the second Bailey beams are detachably connected by two second Bailey frames 102 which are parallel and parallel, the second Bailey frames 102 are arranged in parallel to the central axis of the bridge 9 to be constructed, and as the longitudinal beam in the figures 2 and 3 consists of three rows of second Bailey beams, in the actual construction process, the number of the second Bailey beams can be set as required to construct the longitudinal beam so as to meet the construction requirement;
the adjacent two first Bailey beams or the two second Bailey beams are detachably connected, and the length of each second Bailey beam is smaller than the distance between the adjacent piers 10 of the bridge 9 to be constructed.
In the technical scheme, the connection among the bailey frames is firm and convenient for disassembly and construction, and each bailey beam comprises a plurality of bailey frames which are mutually connected and fixed, so that the overall stability of the supporting mechanism can be improved; in order to provide stable support for the upper structure, when the beret frame is arranged, a mechanism located above is enabled to directly apply force on the vertical rod of the beret frame below, as shown in fig. 2, the cross rod of the first beret frame 201 is correspondingly located above the vertical rod of the second beret frame 102, and each upper distribution beam 3 is correspondingly arranged above the vertical rod of the first beret frame 201.
In another technical solution, the moving device 8 includes two moving vehicles, which are detachably connected with the longitudinal beams 1 through the pad beams 7 respectively and directly under the pair of first cross beams 2.
In the technical scheme, the moving vehicle is positioned right below the first cross beam 2, so that the first cross beam 2 is positioned in the force application direction of jacking of the moving device 8, and the top of the supporting mechanism better props against the bottom of the bridge to be constructed; the moving vehicle is an SPMT, a multifunctional transport vehicle or a self-propelled moving vehicle; the moving device 8 integrates a hydraulic system, a control system and a vehicle system in the traditional method, and has the characteristics of forward and backward movement, assembling and disassembling, and up and down lifting; the operation and rotation angle of the mobile device 8 are configured according to engineering requirements.
In another kind of technical scheme, the emergent support uninstallation of bridge and maintenance all-in-one still includes:
a plurality of second cross beams which are parallel to the pair of first cross beams 2 and are arranged at the upper part of the longitudinal beam 1 at intervals and are positioned between the pair of first cross beams 2, only the pair of first cross beams 2 are shown in the attached drawings 1 and 3, but in the actual construction process, the second cross beams can be selected to be additionally arranged according to the length and the damage state of the bridge to be overhauled;
as shown in fig. 3, similarly, according to the construction requirement, a plurality of second lower distribution beams 42 may be provided between the pair of lower distribution beams 4, a plurality of second support columns 62 may be provided at the lower ends thereof, and a plurality of second support columns 62 may be provided between the pair of first support columns 6 at the lower ends of the lower distribution beams 4;
the second cross beam has the same structure as the first cross beam 2, the second support column 62 has the same structure as the first support column 6, and the second lower distribution beam 42 has the same structure as the lower distribution beam 4.
In the technical scheme, the bridge emergency support unloading and overhauling all-in-one machine can additionally provide a second cross beam and a second support column 62 according to the size and the state of the bridge 9 to be constructed, so that the bearing capacity of the support mechanism is improved.
In another technical scheme, a fixed ladder with guardrails is arranged below the longitudinal beam 1, pedals are arranged at the positions of the upper parts of the longitudinal beams 1 without the cross beams, and safety guardrails are arranged on the periphery of the pedals.
In the technical scheme, ground personnel walk to the longitudinal beam 1 through a fixed ladder with a guardrail and walk to the surface of the pedal to move left and right on the longitudinal beam 1, so that the movement operation of the operator is facilitated; the safety barrier should be higher than 1m to ensure the safety of the operator.
According to foretell structure of bridge emergency support uninstallation and maintenance all-in-one, the utility model provides an embodiment 1 carries out further explanation, implements the step and is:
s1, assembling the mobile device 8 outside the road below the bridge 9 to be constructed;
s2, assembling the longitudinal beam 1 on the top of the mobile device 8;
s3, assembling the first cross beam 2 above the longitudinal beam 1;
s4, respectively installing a pair of telescopic first support columns 6 on the lower surfaces of two ends of the longitudinal beam 1 to complete the installation of the bridge emergency support unloading and overhauling all-in-one machine;
s5, controlling the traffic of the lower part 9 of the bridge to be constructed by the temporary traffic control, and driving the bridge emergency support unloading and overhauling all-in-one machine to the specified position below the bridge 9 to be constructed;
s6, controlling the moving device 8 to ascend, upwards jacking the supporting mechanism, enabling the top of the first cross beam 2 to abut against the bottom of the bridge 9 to be constructed, controlling the first supporting column 6 to extend, enabling the lower end of the first supporting column 6 to abut against the road surface 11, replacing the moving device 8 to support the supporting mechanism, and therefore transferring the weight of the bridge 9 to be constructed to the supporting mechanism of the bridge emergency supporting, unloading and overhauling all-in-one machine to bear, and achieving supporting and unloading operation of the existing bridge; the constructor mounts the supporting mechanism and operates the bridge 9 to be constructed;
and S7, controlling the mobile device 8 to evacuate below the bridge 9 to be constructed for turnover use.
In embodiment 1, in S2, the pad beam 7 is first disposed on the top of the moving device 8, and then the longitudinal beam 1 is detachably connected above the pad beam 7;
in the step S3, an upper distribution beam 3 is arranged on the top of the first cross beam 2 along the direction perpendicular to the central axis of the cross beam, and a leveling block 5 is arranged on the upper part of the upper distribution beam 3 along the central axis of the first cross beam 2;
in the step S4, the lower distribution beam 4 is first arranged on the lower surface of the longitudinal beam 1 in the direction perpendicular to the central axis of the longitudinal beam 1, and then the upper end of the first support column 6 is fixed on the lower surface of the lower distribution beam 4;
in the step S6, the moving device 8 is controlled to ascend, so that the upper surface of the leveling block 5 above the first beam 2 is just abutted against the lower surface of the bridge 9 to be constructed.
In the installation and construction process of the bridge emergency support unloading and overhauling all-in-one machine, the mobile device, the pad beam, the longitudinal beam, the first cross beam, the upper distribution beam, the leveling block, the lower distribution beam, the first support column, the second cross beam and the second support column are all detachably installed, so that the detachable problem of the all-in-one machine before and after bridge overhauling is solved, and the influence on traffic is small.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (8)
1. The utility model provides an emergent support uninstallation of bridge and maintenance all-in-one which characterized in that includes:
the supporting mechanism comprises a longitudinal beam, a pair of first cross beams and two pairs of vertically telescopic first supporting columns, the longitudinal beam is arranged along the central axis direction of the bridge to be constructed, the pair of first cross beams are arranged at the upper part of the longitudinal beam at intervals in a direction perpendicular to the central axis direction of the bridge to be constructed, the two pairs of first supporting columns are respectively vertically arranged at the lower parts of the two ends of the longitudinal beam, and each pair of first supporting columns are symmetrically arranged around the central axis of the longitudinal beam;
the moving device can move along the road surface below the bridge to be constructed, a lifting part capable of vertically lifting is arranged at the top of the moving device, and the top end of the moving device is detachably connected with the bottom of the longitudinal beam; the length of the first support column is set as follows: when the supporting mechanism is located on the moving device, the first supporting column can be not in contact with the road surface, and when the top of the supporting mechanism is abutted to the bottom of the bridge to be constructed, the first supporting column can be abutted to the road surface.
2. The bridge emergency support unloading and overhauling all-in-one machine of claim 1, wherein the support mechanism further comprises:
the at least three upper distribution beams are respectively arranged on the upper part of each first cross beam at intervals along the direction vertical to the central axis of the cross beam;
and the leveling block detachably spans the upper part of the upper distribution beam along the direction vertical to the central axis of the bridge to be constructed, and the upper part of the leveling block is matched with the bottom of the bridge to be constructed.
3. The bridge emergency support unloading and overhauling all-in-one machine of claim 1, wherein the support mechanism further comprises: the lower distribution beams are respectively arranged at the lower parts of the two ends of the longitudinal beam, any one lower distribution beam is perpendicular to the central axis of the longitudinal beam, and the first support columns are respectively arranged at the lower parts of the two ends of the lower distribution beam.
4. The bridge emergency support unloading and overhauling all-in-one machine of claim 1, wherein the support mechanism further comprises:
and the pad beam is arranged at the top of the mobile device, and the upper part of the pad beam is detachably connected with the lower part of the longitudinal beam.
5. The bridge emergency support unloading and overhauling all-in-one machine as claimed in claim 1,
the first cross beam comprises at least two rows of first Bailey beams which are arranged in parallel on a horizontal plane, the first Bailey beams are detachably connected by three first Bailey frames, the first Bailey frames are arranged in a direction perpendicular to the central axis of the longitudinal beam, and the three first Bailey frames are arranged at intervals in the central axis direction of the longitudinal beam;
the longitudinal beams comprise at least three rows of second Bailey beams which are arranged in parallel on a horizontal plane, the second Bailey beams are detachably connected by two second Bailey frames which are parallel and parallel, and the second Bailey frames are arranged in parallel to the central axis of the bridge to be constructed;
the adjacent two first Bailey beams or the two second Bailey beams are detachably connected, and the length of each second Bailey beam is smaller than the distance between the adjacent piers of the bridge to be constructed.
6. The bridge emergency support unloading and overhauling all-in-one machine as claimed in claim 4, wherein the moving device comprises two moving vehicles which are detachably connected to the positions right below the pair of first cross beams through the pad beams and the longitudinal beams respectively.
7. The bridge emergency support unloading and overhauling all-in-one machine of claim 1, further comprising:
the second cross beams are parallel to the first cross beams, are arranged on the upper parts of the longitudinal beams at intervals and are positioned between the first cross beams;
the second support columns are arranged between the two pairs of first support columns on the lower part of the longitudinal beam at intervals;
the second cross beam and the first cross beam are identical in structure, and the second supporting column and the first supporting column are identical in structure.
8. The bridge emergency support unloading and overhauling all-in-one machine as claimed in claim 1, wherein a fixed ladder with guardrails is arranged below the longitudinal beam, pedals are arranged at positions without cross beams at the upper part of the longitudinal beam, and safety guardrails are arranged around the pedals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921082788.XU CN210561781U (en) | 2019-07-11 | 2019-07-11 | Bridge emergency supporting, unloading and overhauling all-in-one machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921082788.XU CN210561781U (en) | 2019-07-11 | 2019-07-11 | Bridge emergency supporting, unloading and overhauling all-in-one machine |
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| CN210561781U true CN210561781U (en) | 2020-05-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110396944A (en) * | 2019-07-11 | 2019-11-01 | 武汉二航路桥特种工程有限责任公司 | Bridge emergency support unloading and maintenance all-in-one machine and construction method |
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2019
- 2019-07-11 CN CN201921082788.XU patent/CN210561781U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110396944A (en) * | 2019-07-11 | 2019-11-01 | 武汉二航路桥特种工程有限责任公司 | Bridge emergency support unloading and maintenance all-in-one machine and construction method |
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Address after: Room 2101-2104, 21 / F, unit a, block a, Hubei science and technology venture building, Xiaohongshan East District, Wuchang District, Wuhan City, Hubei Province, 430061 Patentee after: CCCC Road & Bridge Special Engineering Co.,Ltd. Address before: Room 2101-2104, 21 / F, unit a, block a, Hubei science and technology venture building, Xiaohongshan East District, Wuchang District, Wuhan City, Hubei Province, 430061 Patentee before: CCCC ROAD & BRIDGE SPECIAL ENGINEERING Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |