CN212426789U - Light-duty basket counter-force pre-compaction device that hangs - Google Patents

Light-duty basket counter-force pre-compaction device that hangs Download PDF

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Publication number
CN212426789U
CN212426789U CN202020301978.2U CN202020301978U CN212426789U CN 212426789 U CN212426789 U CN 212426789U CN 202020301978 U CN202020301978 U CN 202020301978U CN 212426789 U CN212426789 U CN 212426789U
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China
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force
prepressing
counter
basket
bridge
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Chinese (zh)
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叶方谦
胡浩
张艳梅
王佳宇
吴惠君
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Hubei Provincial Road & Bridge Co ltd
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Hubei Provincial Road & Bridge Co ltd
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Abstract

The utility model provides a light-duty basket counter-force pre-compaction device of hanging, including hanging device, self-compaction concrete, template system, counter-force pre-compaction device, supplementary counter-force pre-compaction device and running gear, hanging device is used for hanging in midair of basket, self-compaction concrete is used for pouring of bridge, the template system is used for controlling the structure size of pouring the bridge, counter-force pre-compaction device is used for hanging the pre-compaction of basket, supplementary counter-force pre-compaction device is used for the supplementary pre-compaction of hanging the basket, running gear is used for hanging the basket and removes forward. The invention can perform counter-force prepressing on the light hanging basket of the bridge, improves the working efficiency, ensures the simple and easy prepressing of the light hanging basket of the bridge, and improves the prepressing effect of the counter-force prepressing of the light hanging basket compared with other reinforcement modes.

Description

Light-duty basket counter-force pre-compaction device that hangs
Technical Field
The utility model relates to a bridge hangs and waters construction field, in particular to light-duty basket counter-force pre-compaction device of hanging.
Background
With the development of economic construction, bridge suspension casting is used as the most main construction form in bridge engineering and has very wide application. The hanging basket is used as construction equipment for a large-span continuous suspension casting beam bridge and also has wide application.
Need in the bridge hangs and waters construction and to hanging basket pre-compaction work load in advance, measure the deflection of hanging the basket under the loading effect, conveniently set up the degree of arching in advance, prevent that the hanging basket from subsiding too big, consequently, in order to guarantee the normal use and the safety of bridge hanging the construction of watering, need carry out the counter-force pre-compaction to the hanging basket that the bridge hung in watering the construction, let the bridge hang the basket warp within the allowed band to guarantee the safety of bridge hanging the construction of watering.
The existing hanging basket prepressing technology is to perform prepressing on a sand bag or a water bag above a hanging basket, and the phenomena of troublesome stacking and inconvenient operation exist. At present, aiming at the problems existing in the prior hanging basket prepressing technology, the development of a light hanging basket counter-force prepressing device is necessary to be developed so as to ensure the safety of bridge suspension casting construction.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a light-duty basket counter-force pre-compaction device of hanging for solve the problem that appears when present bridge hangs the basket pre-compaction.
A light-duty basket counter-force pre-compaction device includes:
the device comprises a suspension device, a template system, a counter-force prepressing device, an auxiliary counter-force prepressing device and a walking device; the traveling device is paved and fixed on a top plate of an O-shaped block bridge, and the hanging basket main truss is arranged on the traveling device; stress rods of the suspension device are symmetrically and vertically arranged along the middle part of a bridge to be poured, the upper ends of the stress rods are fixed on a main truss of a hanging basket, the lower ends of the stress rods are fixed on a top plate of a No. 0 bridge, stress cross beams are transversely welded and fixed on the two stress rods and are arranged above the top plate of the No. 0 bridge, the suspension rods are vertically suspended on the stress cross beams, and a bottom basket is transversely suspended on suspension rods; the counter-force preloading device comprises a web counter-force support and a counter-force preloading jack, the web counter-force support is embedded in the O-shaped bridge webs on the two sides, the counter-force preloading jack is placed on the bottom basket, and a base of the counter-force preloading jack is placed below the web counter-force support; supplementary counter-force pre-compaction device is including the depression bar in advance, pre-compaction nut, pre-compaction fixing device, and pre-compaction fixing device includes fixation nut, one-way fixed cardboard, fixed slot and pre-compaction hole, and one-way fixed cardboard passes through fixation nut to be fixed at No. 0 bridge bottom plate lower extreme, and the pre-compaction hole is arranged in on No. 0 bridge bottom plate and at the downthehole fixed slot that forms of pre-compaction, and pre-compaction nut nestification is on the depression bar in advance.
In some embodiments, the web reaction force bracket is a triangular steel frame, and the reaction force preloading jack is a cylinder.
In some embodiments, the counter-force preloading jack is adjusted to apply a downward force to the bottom basket to counter-force preload the cradle.
In some embodiments, the pre-pressing rod is a cylindrical rod, and one end of the side surface is provided with threads, and the other end of the side surface is provided with a fixing clamping groove which is matched with the pre-pressing nut and the unidirectional fixing clamping groove respectively.
In some embodiments, the pre-pressing nut is a hollow cylinder, and the inner side surface of the pre-pressing nut is provided with threads, and the pre-pressing nut is nested on the pre-pressing rod through the threads.
In some embodiments, the structure of the unidirectional fixing clamping plate is a square flexible thin plate, the structure of the fixing nut is cylindrical, and the unidirectional fixing clamping plate is fixed on the No. 0 bridge bottom plate through the fixing nut.
In some embodiments, the retaining clip groove face structure is triangular.
In some embodiments, the prepressing nut is rotated to enable the prepressing rod to apply downward acting force to the bottom basket, and auxiliary counter-force prepressing is carried out on the hanging basket.
In some embodiments, the support i-beam is placed above the bottom basket.
Compared with the prior art, the technical scheme has the following characteristics and beneficial effects:
the web counterforce support is used, so that the bridge hanging basket is not pre-pressed by a sand-piling bag or a water bag, the operation of workers is facilitated, the working efficiency is improved, and the pre-pressing of the bridge hanging basket is simple and easy.
2. The counter-force prepressing jack is used, so that the prepressing amount of the cradle is accurately controlled, the pre-camber is conveniently set in advance, the cradle is prevented from being excessively settled, and the prepressing quality of the bridge cradle is controlled in a standardized way.
3. The auxiliary counter-force prepressing device can assist the bridge counter-force prepressing, increases the prepressing amount of the hanging basket counter-force prepressing, and has the characteristics of firm connection, simple installation, rapidness and convenience.
Drawings
FIG. 1 is a front view of the lightweight hanging basket counter-force preloading structure of the present invention.
FIG. 2 is a side view of the lightweight hanging basket reaction pre-compression structure of the present invention.
FIG. 3 is a schematic structural view of the reaction force preloading device of the present invention.
Fig. 4 is a schematic structural view of the auxiliary reaction force preloading device of the present invention.
Fig. 5 is a schematic structural view of the prepressing fixing device of the present invention.
Reference numbers in the figures: 1, a suspension device, 11 stress rods, 12 stress beams, 13 suspension rods, 14 bottom baskets and 15 support I-shaped steel; 2 self-compacting concrete; 3, a template system, 31 an inner template, 32 an outer template and 33 a bottom template; 4 counter-force prepressing device, 41 web counter-force bracket, 42 counter-force prepressing jack; 5 auxiliary counter-force prepressing devices, 51 prepressing rods, 52 prepressing nuts, 53 prepressing fixing devices, 531 fixing nuts, 532 unidirectional fixing clamping plates, 533 fixing clamping grooves and 534 prepressing holes; 6, a walking device.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purposes of limitation.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
A light-duty basket counter-force pre-compaction device includes: the hanging device (1) is used for hanging the cradle, and the hanging device (1) comprises a stress rod (11), a stress beam (12), a hanging rod (13), a bottom basket (14) and a supporting I-shaped steel (15); the self-compacting concrete (2) is used for pouring the bridge; the template system (3) is used for controlling the structure size of the poured bridge, and the template (3) comprises an inner template (31), an outer template (32) and a bottom template (33); the counter-force prepressing device (4) is used for prepressing the cradle, and the counter-force prepressing device (4) comprises a web counter-force bracket (41) and a counter-force prepressing jack (42); the auxiliary counter-force prepressing device (5) is used for assisting in prepressing of the hanging basket, and the auxiliary counter-force prepressing device (5) comprises a prepressing rod (51), a prepressing nut (52) and a prepressing fixing device (53); and the traveling device (6) is used for moving the cradle forwards.
Specifically, the traveling device (6) is fixed on a top plate of an O-shaped block bridge through an anchor, the hanging basket main truss is arranged on a track of the traveling device (6), and the hanging basket main truss is fixed above the top plate of the 0-shaped block bridge through an anchor rod after moving to a designated position along the track; stress rods (11) of the suspension device (1) are symmetrically and vertically arranged along the middle of a bridge to be poured, the upper ends of the stress rods (11) are hinged and fixed on a main truss of a suspension basket through bolts, the lower ends of the stress rods are fixed on a top plate of a No. 0 bridge through rivets, stress cross beams (12) are transversely paved and welded on the two stress rods (11) and are arranged above the top plate of the No. 0 bridge, a suspension rod (13) is hinged and vertically suspended on the stress cross beam (12) through bolts, and a bottom basket (14) is transversely paved and fixed at the lower end of the suspension rod (13) through bolts;
a web plate reaction force support (41) of the reaction force preloading device (4) is embedded in webs of O-shaped pieces of bridges on two sides, a reaction force preloading jack (42) is placed on a bottom basket (14), a base of the reaction force preloading jack (42) is placed below the web plate reaction force support (41), and a hydraulic rod of the reaction force preloading jack (42) is adjusted to enable the reaction force preloading jack (42) to be clamped between the two.
Supplementary counter-force pre-compaction device (5) are including prepressing pole (51), pre-compaction nut (52), pre-compaction fixing device (53) are by fixation nut (531), one-way fixed cardboard (532), fixed draw-in groove (533) and pre-compaction hole (534) four bibliographic categories divide and constitute, one-way fixed cardboard (532) are fixed at No. 0 bridge bottom plate lower extreme through fixation nut (531), pre-compaction hole (534) are arranged in on No. 0 bridge bottom plate and are formed fixed draw-in groove (533) in pre-compaction hole (534), pre-compaction nut (52) nestification is on prepressing pole (51).
The supporting I-steel (15) is placed above the bottom basket (14) and used for supporting the template system (3), and a certain distance is reserved between the template system (3) and the bottom basket (14) through the supporting I-steel (15), so that a placement space is provided for counter-force pre-pressing.
The stress rod (11) is a hollow round rod, two stress rods are symmetrically arranged along the middle of the bridge, the upper end of the stress rod is fixed on the hanging basket main truss through an anchoring device, and the lower end of the stress rod is fixed on a top plate of a No. 0 bridge which is poured and used for bearing the weight of the whole hanging basket and transmitting force to the hanging basket main truss.
The stressed cross beam (12) is a hollow square beam and is fixed on the two stressed rods (11) through an anchoring device to hang the bottom basket (14) and the template system (3) and transfer the weight of the bottom basket (14) and the template system (3) to the stressed rods (11).
The suspension rod (13) is a hollow round rod, the upper end of the suspension rod is fixed on the stressed cross beam (12) through an anchoring device, and the lower end of the suspension rod is fixed on the bottom basket (14) and the template system (3) and used for bearing the weight of the bottom basket (14) and the template system (3) and transmitting the force to the stressed cross beam (12).
The structure of end basket (14) is hollow square beam, fixes it on suspension pole (13) through anchor, and end basket (14) are reaction pre-compaction's operating point, applys the reaction through reaction pre-compaction device to end basket (14), carries out reaction pre-compaction to whole string basket.
The self-compacting concrete (2) is used for pouring of the formwork system (3), and specifically, the inner formwork (31), the outer formwork (32) and the bottom formwork (33) of the bridge are poured.
The template system (3) comprises an inner template (31), an outer template (32) and a bottom template (33), wherein the inner template (31) is arranged inside the bridge to be poured, the outer template (32) is arranged outside the bridge to be poured, the bottom template (33) is arranged at the bottom of the bridge to be poured, and the template system (3) is respectively fixed on the suspension rods (13) and the top plate of the O-shaped block bridge.
The structure of inner formword (33) is door type cross-section steel sheet, places in waiting to water the inside of bridge, will keep away from No. O a bridge roof's one end through anchor fixed on suspension rod (13), and the one end that is close to No. O a bridge roof is fixed on No. 0 bridge roof.
The structure of the outer template (32) is an L-shaped section steel plate, the steel plate is placed outside a bridge to be poured, one end, far away from the O-shaped block bridge top plate, of the outer template is fixed on the suspension rod (13) through an anchoring device, and one end, close to the O-shaped block bridge top plate, of the outer template is fixed on the 0-shaped block bridge top plate.
The bottom template (33) is a plane steel plate and is placed at the bottom of a bridge to be poured, one end, far away from the O-shaped block bridge top plate, of the bottom template is fixed on the suspension rod (13) through an anchoring device, and one end, close to the O-shaped block bridge top plate, of the bottom template is fixed on a No. 0 block bridge bottom plate which is poured.
The counter-force prepressing device (4) consists of a web counter-force bracket (41) and a counter-force prepressing jack (42) and is used for the counter-force prepressing of the cradle.
The structure of web reaction support (41) is the triangle-shaped steelframe, respectively pre-buried one in No. 0 piece bridge web of both sides, as the stress point of reaction pre-compaction jack (42), the structure of reaction pre-compaction jack (42) is the cylinder, respectively places one in No. 0 two web bottoms of piece bridge, can exert the counter-force to hanging the basket base, makes and hangs basket downstream.
When the device is used, a hydraulic device of the reaction force prepressing jack (42) is adjusted to extend a hydraulic rod to apply downward acting force to the bottom basket (14) so as to perform reaction force prepressing on the cradle.
The auxiliary counter-force prepressing device (5) consists of a prepressing rod (51), a prepressing nut (52) and a prepressing fixing device (53) and is used for assisting the counter-force prepressing of the cradle. The structure of the pre-pressing rod (51) is a cylindrical rod piece, one end of the side face of the pre-pressing rod is provided with threads, and the other end of the pre-pressing rod is provided with a fixing clamping groove which can be respectively matched with the pre-pressing nut (52) and the unidirectional fixing clamping groove (533).
The structure of pre-compaction nut (52) is hollow cylinder, and the medial surface is equipped with the screw thread, and accessible screw thread nestification is on pre-compaction pole (51), and rotatory pre-compaction nut (52) can make pre-compaction pole (51) move down.
The prepressing fixing device (53) is composed of four parts, namely a fixing nut (531), a one-way fixing clamping plate (532), a fixing clamping groove (533) and a prepressing hole (534), and can assist the bridge hanging basket to perform counter-force prepressing. The fixing nut (531) is cylindrical and is placed on the No. 0 bridge bottom plate, the unidirectional fixing clamping plate (532) can be fixed on the No. 0 bridge bottom plate, the unidirectional fixing clamping plate (532) is a square flexible thin plate, and the fixing nut (531) is fixed at the lower end of the No. 0 bridge bottom plate and can only deflect downwards in a unidirectional mode.
Form pre-compaction hole (534) on No. 0 piece bridge bottom plate, pre-compaction hole (534) inboard wall forms fixed slot (533), fixed slot (533) groove face structure is triangle-shaped, when pre-compaction pole (51) move down, one section of soft sheet metal is fixed on the bottom plate, the other end can only be followed the triangle-shaped hypotenuse and moved adjacent upper portion fixed slot (533), can not move adjacent lower part fixed slot (533), thereby tightly block pre-compaction pole (51) through fixed slot (533), make pre-compaction pole (51) can assist the counter force pre-compaction to hanging the basket downwards.
The pre-pressing hole (534) is a cylindrical hole and is arranged on a No. 0 block bottom plate which is poured, so that a pre-pressing rod (51) can penetrate through the bridge bottom plate.
When the device is used, the prepressing nut (52) is rotated to enable the prepressing rod (51) to apply downward acting force to the bottom basket (14), and auxiliary reaction prepressing is carried out on the hanging basket.
The traveling device (6) is structurally an I-shaped steel rail and is placed on a top plate of a No. 0 block of the bridge, so that the hanging basket can move forwards along the rail.
The specific implementation method of the light hanging basket pressure prepressing device comprises the following steps:
(1) and installing a light hanging basket.
(1-1) determining a mounting position: determining the position of the light hanging basket to be placed according to a construction drawing, and paying off and marking at the corresponding position;
(1-2) installing a walking device: paving a walking device (6) on the top plate of the No. 0 bridge, and firmly anchoring;
(1-3) hanging basket assembly: after the main trusses of the hanging basket are assembled on the ground, the hanging basket is placed on a walking device (6) and is firmly anchored;
(1-4) installing a suspension device: placing a stress rod (11) of a suspension device (1) on a main truss of a hanging basket and fixing the stress rod, placing a stress beam (12) on the stress rod (11) and firmly welding the stress beam, and then hanging a suspension rod (13) on the stress beam;
(2) and installing a counter-force prepressing device.
(2-1) installing a reaction force prepressing device: suspending a bottom basket (14) on a suspension rod (13), placing a supporting I-shaped steel (15) on the bottom basket (14), then placing a reaction force prepressing jack (42) on the bottom basket (14), and placing a base of the reaction force prepressing jack (42) below a web plate reaction force support (41);
(2-2) installing an auxiliary reaction force prepressing device: placing a pre-pressing rod (51) on a bottom basket (14) through a pre-pressing hole (534), fixing a unidirectional fixing clamping plate (532) on the lower surface of a No. 0 block bottom plate by using a fixing nut (531), and rotating a pre-pressing nut (52) to the upper surface of the bottom plate to tightly fix the pre-pressing rod (51) on the No. 0 block bottom plate;
(3) and (5) prepressing the light hanging basket.
(3-1) reaction force prepressing: adjusting a reaction force prepressing jack (42) to apply a downward acting force on the bottom basket (14) so as to perform reaction force prepressing on the hanging basket;
(3-2) auxiliary reaction force preloading: rotating the pre-pressing nut (52) to enable the pre-pressing rod (51) to apply downward acting force to the bottom basket (14) and perform auxiliary reaction pre-pressing on the hanging basket;
(2-3) unloading: unloading the counter-force prepressing device (4) and the auxiliary counter-force prepressing device (5) after the counter-force prepressing is finished;
(4) and placing the template.
(4-1) determining the mounting position: determining the position of the template system (3) to be placed according to a construction drawing, and paying off and marking at the corresponding position;
(4-2) placing a bottom template: placing the end, far away from the No. 0 block, of the bottom template (33) on the supporting I-steel (15), fixing the end, close to the No. 0 block, of the bottom template on the poured No. 0 block bridge bottom plate, and anchoring and fixing the bottom template;
(4-3) placing an outer template: fixing the outer template (32) far away from the No. 0 block end on a suspension rod (13) in a hoisting mode, fixing the outer template close to the No. 0 block end on a poured No. 0 bridge top plate, and adjusting elevation according to requirements;
(4-4) placing an inner template: fixing the inner template (31) far away from the No. 0 block end on a suspension rod (13) in a hoisting mode, fixing the inner template close to the No. 0 block end on a poured No. 0 bridge top plate, and adjusting elevation according to requirements;
(5) and (5) pouring concrete.
After the steel bars are bound, pouring the self-compacting concrete (2) into the gaps among the inner formwork (31), the outer formwork (32) and the bottom formwork (33) through the pipelines, and watering and maintaining the self-compacting concrete (2) after pouring is finished.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by the teaching of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as the present invention, fall within the protection scope of the present invention.

Claims (9)

1. The utility model provides a light-duty basket counter-force pre-compaction device, its characterized in that includes:
the device comprises a suspension device (1), a template system (3), a reaction pre-pressing device (4), an auxiliary reaction pre-pressing device (5) and a traveling device (6);
wherein the traveling device (6) is paved and fixed on the top plate of the O-shaped block bridge, and the hanging basket main truss is arranged on the traveling device (6); stress rods (11) of the suspension device (1) are symmetrically and vertically arranged along the middle of a bridge to be poured, the upper ends of the stress rods (11) are fixed on a main truss of a hanging basket, the lower ends of the stress rods are fixed on a top plate of a bridge No. 0, stress cross beams (12) are transversely paved and welded on the two stress rods (11) and are arranged above the top plate of the bridge No. 0, a suspension rod (13) is vertically suspended on the stress cross beam (12), and a bottom basket (14) is transversely paved and fixed on the suspension rod (13);
the reaction force pre-pressing device (4) comprises a web reaction support (41) and reaction force pre-pressing jacks (42), the web reaction support (41) is pre-buried in O-shaped bridge webs on two sides, the reaction force pre-pressing jacks (42) are placed on the bottom basket (14), and bases of the reaction force pre-pressing jacks (42) are placed below the web reaction support (41);
supplementary counter-force pre-compaction device (5) are including prepressing pole (51), pre-compaction nut (52), pre-compaction fixing device (53) are including fixation nut (531), one-way fixed cardboard (532), fixed slot (533) and pre-compaction hole (534), one-way fixed cardboard (532) are fixed at No. 0 bridge bottom plate lower extreme through fixation nut (531), pre-compaction hole (534) are arranged in on No. 0 bridge bottom plate and are formed fixed slot (533) in pre-compaction hole (534), pre-compaction nut (52) nestification is on prepressing pole (51).
2. The light-weight hanging basket counter-force prepressing device according to claim 1, characterized in that the web counter-force bracket (41) is a triangular steel frame and the counter-force prepressing jack (42) is a cylinder.
3. A light-weight basket reaction preloading device according to claim 1, wherein the reaction preloading jack (42) is adjusted to apply a downward force to the bottom basket (14) to perform the reaction preloading of the basket.
4. The light-duty hanging basket counter-force prepressing device according to claim 1, characterized in that the structure of the prepressing rod (51) is a cylindrical rod, one end of the side surface is provided with a thread, and the other end is provided with a fixed clamping groove, which is respectively matched with the prepressing nut (52) and the unidirectional fixed clamping groove (533).
5. The light hanging basket counter-force prepressing device according to claim 1, characterized in that the prepressing nut (52) is a hollow cylinder with threads on an inner side, and is embedded on the prepressing rod (51) through the threads.
6. The light hanging basket counter-force pre-pressing device as recited in claim 1, wherein the one-way fixing clamping plate (532) is a square flexible thin plate, the fixing nut (531) is cylindrical, and the one-way fixing clamping plate (532) is fixed on the No. 0 bridge bottom plate through the fixing nut (531).
7. The light hanging basket counter-force prepressing device according to claim 1, characterized in that the groove surface structure of the fixing groove (533) is triangular.
8. The light-weight hanging basket counter-force prepressing device according to claim 1, wherein the prepressing nut (52) is rotated to enable the prepressing rod (51) to apply a downward acting force to the bottom basket (14) to assist the hanging basket in counter-force prepressing.
9. The light-weight hanging basket counter-force prepressing device according to claim 1, characterized in that the supporting i-steel (15) is placed above the bottom basket (14).
CN202020301978.2U 2020-03-12 2020-03-12 Light-duty basket counter-force pre-compaction device that hangs Active CN212426789U (en)

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CN202020301978.2U CN212426789U (en) 2020-03-12 2020-03-12 Light-duty basket counter-force pre-compaction device that hangs

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Application Number Priority Date Filing Date Title
CN202020301978.2U CN212426789U (en) 2020-03-12 2020-03-12 Light-duty basket counter-force pre-compaction device that hangs

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CN212426789U true CN212426789U (en) 2021-01-29

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GR01 Patent grant
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Light hanging basket reaction preloading device

Effective date of registration: 20230927

Granted publication date: 20210129

Pledgee: Industrial Bank Limited by Share Ltd. Wuhan branch

Pledgor: HUBEI PROVINCIAL ROAD & BRIDGE Co.,Ltd.

Registration number: Y2023980059401

PE01 Entry into force of the registration of the contract for pledge of patent right