CN220769477U - Road tunnel maintenance trolley device without interrupting traffic - Google Patents
Road tunnel maintenance trolley device without interrupting traffic Download PDFInfo
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- CN220769477U CN220769477U CN202321406884.1U CN202321406884U CN220769477U CN 220769477 U CN220769477 U CN 220769477U CN 202321406884 U CN202321406884 U CN 202321406884U CN 220769477 U CN220769477 U CN 220769477U
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Abstract
The utility model discloses a road tunnel maintenance trolley device without interrupting traffic. The portal structure spans and is positioned in the highway tunnel, the bottom of the portal structure is connected with the highway in a rolling way through a travelling mechanism, and the portal structure is provided with an operation platform and guardrails; the portal frame structure is in an inverted U shape as a whole, an inverted U-shaped beam column part is formed by connecting a cross beam, inclined struts and stand columns, the cross beam is horizontally arranged, the stand columns are positioned below two sides of the cross beam, and the upper ends of the stand columns are connected with the cross beam through the inclined struts; the four inverted U-shaped beam column members are connected through longitudinal tie bars, and the two inverted U-shaped beam column members with the same vertical surface are connected through web members. The utility model can realize the tunnel maintenance and reinforcement construction under the condition of incompletely closed traffic, can utilize the lateral width of the tunnel detection channel and the lane, ensure that the trolley device does not occupy the lane, reduce the influence of the construction on normal traffic, can realize quick assembly through simple components and connecting mechanisms, has simple disassembly and convenient transportation, and is beneficial to improving the construction efficiency.
Description
Technical Field
The utility model belongs to the technical field of tunnel maintenance equipment, and particularly relates to a road tunnel maintenance trolley device without interrupting traffic, which is used for large-scale maintenance and reinforcement, general disease treatment and disease detection of a road tunnel.
Background
In recent years, the industry of China highway tunnels rapidly develops, and the number of national highway tunnels and mileage rapidly increase. For highway construction in mountainous areas, the tunnel structure has important effects of reducing the line distance and improving the line condition. However, with the increase of tunnel operation time, degradation of material properties, quality defects at the design construction stage, adverse effects of poor geological conditions and sudden disaster accidents, defects of operation tunnel structures such as cracks, chipping, water leakage, insufficient lining thickness and the like occur widely.
In order to ensure the normal operation of the highway tunnel and improve the service life of the operation tunnel, various diseases need to be maintained and treated, the common maintenance and construction mode is to completely seal the tunnel or seal a single lane, and then to treat and maintain the diseases. The existing tunnel defect maintenance device comprises a vehicle-mounted scaffold, an overhead working truck, a vehicle-mounted lifter and the like. When these maintenance devices are used, they usually need to occupy a lane, even need to completely close the whole tunnel, and cannot realize complete uninterrupted traffic. Besides, the existing maintenance device has the defects of inconvenient assembly, heavy assembly parts, inconvenient transportation and the like, and influences the construction efficiency. Therefore, the existing tunnel maintenance construction has larger influence on the traffic of the expressway, and causes larger economic loss and bad social influence.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a road tunnel maintenance trolley device without interrupting traffic, which has the functions of convenient disassembly, light assembly parts, no need of lane sealing during construction, convenient movement and the like, so as to solve the problems in the prior art. The method can solve the problem that the construction of the highway tunnel affects the normal traffic operation, reduces the assembly time of the maintenance device, improves the construction efficiency, and greatly reduces the maintenance time and the maintenance cost of the highway of the tunnel, thereby playing an irreplaceable role in various aspects of ensuring the safe operation of the highway tunnel, realizing the uninterrupted traffic maintenance of the highway tunnel, and the like.
The technical scheme of the utility model is as follows:
the utility model comprises a portal frame structure, a travelling mechanism, an operation platform and guardrails; the portal structure spans the highway top that is located in the highway tunnel, and portal structure bottom is connected with the both sides ground rolling support of highway through running gear, and portal structure top is equipped with operation platform and guardrail.
The portal frame structure is in an inverted U shape and comprises four inverted U-shaped beam column parts and a connecting mechanism between the four inverted U-shaped beam column parts;
each inverted U-shaped Liang Zhujian is in an inverted U shape and is formed by connecting a cross beam, two inclined struts and two upright posts which are positioned on the same vertical plane, wherein the cross beam is horizontally arranged, the two upright posts are respectively positioned below two sides of the cross beam, and the upper ends of the two upright posts are respectively connected with two ends of the cross beam through the inclined struts;
the four inverted U-shaped beam column parts are divided into two groups, wherein two inverted U-shaped Liang Zhujian of one group are respectively positioned at the outer periphery and the inner periphery of the front end of the portal structure, and two inverted U-shaped Liang Zhujian of the other group are respectively positioned at the outer periphery and the inner periphery of the rear end of the portal structure;
the connecting mechanism comprises longitudinal tie bars and web members, the four inverted U-shaped beam column members at each cross section along the inverted U-shape of the portal structure are connected with each other through the longitudinal tie bars, and meanwhile, the two inverted U-shaped beam column members of the same group are connected with each other through the web members.
The longitudinal tie bar comprises a tie bar frame, female heads, male heads and bolts, wherein the tie bar frame mainly comprises two horizontal straight bars and triangular diagonal bars fixedly connected between the two straight bars, the female heads are fixedly arranged on the cross beams of the four inverted U-shaped beam column members, and the four ends of the two straight bars serving as four ends of four corners are respectively inserted into the female heads of the cross beams of the four inverted U-shaped beam column members and are connected through the bolts.
The web member assembly comprises web members and connecting plates, wherein cross beams in two inverted U-shaped beam column members of the same group are respectively used as an upper chord member and a lower chord member, the upper chord member and the lower chord member are connected through W-shaped folded linear web members, each web member is formed by sequentially connecting a plurality of web members which are obliquely arranged, the adjacent two web members which are obliquely arranged are connected through the connecting plates, and the connecting plates are positioned at inflection points of the W-shaped folded linear web members; meanwhile, the connecting plate is also directly fixed on the upper chord member/the lower chord member, and the connecting plate is connected with the lower chord member/the upper chord member through a web member which is vertically arranged.
The outside of each diagonal bracing is fixedly provided with a guiding limit wheel.
The travelling mechanism comprises two power trolleys with adjustable heights, two driven trolleys and supporting rollers with non-adjustable heights; two power trolleys are symmetrically arranged on two sides of the front portion of the portal structure, two driven trolleys are symmetrically arranged on two sides of the rear portion of the portal structure, the portal structure is integrally in an inverted U shape, supporting rollers are mounted on the bottom surfaces of two ends of the portal structure, and limiting pieces capable of locking the rollers are mounted on the front sides of the supporting rollers.
The two power trolleys comprise a trolley base, a trolley frame, a forward power source, a forward chain, a steering power source, a steering chain and a lifting shaft rod, wherein the trolley base is fixed on a portal frame structure, the bottom surface of the trolley base is connected to the trolley frame through the lifting shaft rod capable of lifting up and down, wheels are installed at the bottom of the trolley frame, the forward power source is installed on the trolley frame and is in transmission connection with the wheels through the forward chain, and the steering power source is installed on the trolley frame and is in transmission connection with the shaft rod through the steering chain.
The operation platform is arranged on the upper portion of the portal frame structure, and the guardrails are arranged around the operation platform.
The guardrail comprises a fixed structure and a railing, and the bottom end of the railing is connected with the working platform through the fixed structure;
the fixed knot constructs including base, movable rod and movable bolt, and the railing bottom passes through movable bolt and base and articulates, and sets up the movable rod in movable bolt's top, and the movable rod detachably cartridge is in the pinhole of base and railing bottom simultaneously.
The utility model has the following beneficial effects:
1. according to the trolley device for maintenance and repair of the highway tunnel, the portal structure is used for mounting, so that the tunnel maintenance space is separated from the normal traffic lane space, and the tunnel maintenance and reinforcement construction under the condition of incomplete closed traffic can be realized;
2. the trolley device utilizes the tunnel detection channel and the lateral width of the lane to ensure that the trolley device does not occupy the lane, can meet the normal traffic of vehicles and realize uninterrupted traffic construction;
3. the trolley device can be assembled quickly through simple components such as the upper chord, the lower chord, the web members and the like and the connecting mechanism, is simple to disassemble and convenient to transport.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of a gantry structure according to the present utility model;
FIG. 3 is a schematic view of the beam structure of the present utility model;
FIG. 4 is a schematic diagram of the power cart of the present utility model;
FIG. 5 is a schematic view of the longitudinal tie structure of the present utility model;
FIG. 6 is a schematic view of a structure of a connecting plate according to the present utility model;
fig. 7 is a schematic view of the guardrail structure of the present utility model.
In the figure:
1-a portal structure; 11-a cross beam; 111-upper chords; 112-bottom chords; 113 web members; 12-diagonal bracing; 13-stand columns; 14-guiding limit wheels;
2-a travelling mechanism; 21-a power trolley; 211-forward power source; 212-advancing the chain; 213-steering power source; 214-steering chain; 215-lifting shaft rod; 22-driven trolley; 23-supporting rollers;
3-a connection mechanism; 31-longitudinal tie; 311-female; 312-male; 313-latch; 32-connecting plates; 33-fastening bolts;
4-an operation platform;
5-guard bars; 51-a fixed structure; 511-a base; 512-movable rod; 513-a movable bolt; 52-railing.
Detailed Description
In order to enable those skilled in the art to better understand the technical scheme of the utility model, the following describes in detail a road tunnel maintenance trolley device without interrupting traffic provided by the utility model with reference to the embodiment.
As shown in fig. 1, the maintenance trolley device is arranged in a highway tunnel, and the device comprises a portal structure 1, a traveling mechanism 2, an operation platform 4 and a guardrail 5; the portal structure 1 spans the highway top that is located in the highway tunnel, and the portal structure 1 bottom is connected with the both sides ground rolling support of highway through running gear 2, and portal structure 1 top is equipped with operation platform 4 and guardrail 5.
As shown in fig. 2, the portal structure 1 is in an inverted U shape as a whole and comprises four inverted U-shaped beam columns with the same structure but different sizes and a connecting mechanism 3 between the four inverted U-shaped beam columns;
each inverted U-shaped Liang Zhujian is in an inverted U shape and is formed by integrally connecting a cross beam 11, two inclined struts 12 and two upright posts 13 which are positioned on the same vertical plane, the cross beam 11 is horizontally arranged, the two upright posts 13 are respectively positioned below two sides of the cross beam 11, the upper ends of the two upright posts 13 are respectively connected with the horizontal two ends of the cross beam 11 through the inclined struts 12, so that the cross beam 12 is arranged on the upper part of the portal structure 1, and the cross beam 12 and the upright posts 13 are connected in a bolting way to form the whole portal structure, so that normal traffic of vehicles can be met, and uninterrupted traffic construction is realized.
The four inverted U-shaped beam column parts are divided into two groups, wherein two inverted U-shaped beam column parts of one group are respectively positioned at the outer periphery and the inner periphery of the front end of the portal structure 1, and two inverted U-shaped beam column parts of the other group are respectively positioned at the outer periphery and the inner periphery of the rear end of the portal structure 1.
As shown in fig. 5 and 6, the connection mechanism 3 comprises a longitudinal tie 31 and a web assembly, the four inverted U-shaped beam-column members at each cross section along the entire inverted U-shape of the portal structure 1 being interconnected by the longitudinal tie 31, while the same set of two inverted U-shaped beam-column members are interconnected by the web assembly.
Specifically, support rollers 23 are provided on the lower end face of the diagonal braces 12 for supporting the mast structure 1.
As shown in fig. 5, the longitudinal tie 31 is arranged in the tunnel axial direction for longitudinal connection of the mast structure 1, enabling quick disassembly. The tie bar frame mainly comprises two horizontal straight bars and triangular diagonal bars fixedly connected between the two straight bars, wherein one female head 311 is fixedly arranged on a cross beam 12 of four inverted U-shaped beam column members, two ends of the two straight bars are respectively positioned at four corners, and two ends of the two straight bars serving as four ends of the four corners are respectively inserted into the female heads 311 of the cross beams 12 of the four inverted U-shaped beam column members and fixedly connected through the bolts 313.
The female head 311 is a steel pipe, such as a square steel pipe, is welded on one side of the upper chord 111 and the lower chord 112, is hollow, has an inner diameter slightly larger than the outer diameter of the male head 312, and the male head 312 can be inserted into the female head 311 and fixedly connected through the bolt 313, so that the assembling difficulty of the trolley device is reduced.
As shown in fig. 3, the web member assembly comprises web members 113 and connecting plates 32, wherein the cross beams 11 in two inverted U-shaped beam column members of the same group are respectively used as an upper chord member 111 and a lower chord member 112, the upper chord member 111 and the lower chord member 112 are connected by a W-shaped folded web member, each web member is formed by sequentially connecting a plurality of web members 113 which are obliquely arranged, the adjacent two web members 113 which are obliquely arranged are connected through the connecting plates 32, and the connecting plates 32 are positioned at the inflection points of the W-shaped folded web members of the web members;
meanwhile, the connecting plate 32 is also directly fixed on the bottom surface of the upper chord 111/the top surface of the lower chord 112, and the connecting plate 32 is connected with the lower chord 112/the upper chord 111 through a web member 113 which is vertically arranged; if the inflection point of the W-shaped fold line where the connecting plate 32 is located is a peak, the connecting plate 32 is directly fixed to the upper chord 111 and is connected to the lower chord 112 through a web member 113 arranged vertically; if the inflection point of the W-fold line where the web 32 is located is a trough, the web 32 is fixed to the lower chord 112 and connected to the upper chord 111 by a web 113 arranged vertically.
In practice, a longitudinal tie 31 is preferably provided on the vertical face of the web member 113, which is arranged vertically.
As shown in fig. 6, the web 113 and the web 32, and the web 113 and the lower chord 112/the upper chord 111 are connected by fastening bolts 33.
The connecting plate 32 is fixed on one side of the upper chord 111 and the lower chord 112, through holes are formed in the connecting plate 32, and the upper chord 111 and the lower chord 112 can be connected and fastened through web members 113 and fastening bolts 33.
The upper chord 111 is shaped steel, such as i-shaped, the lower side is welded or bolted with the connecting plate 32, the lower chord 112 is also shaped steel, the upper side is welded or bolted with the connecting plate 32, and the web member 113 is connected with the upper chord 111 and the lower chord 112 by bolts.
Each diagonal brace 12 is fixedly provided with a guiding limit wheel 14 towards the outer side of the inner wall of the highway tunnel. The guiding and limiting wheels 14 are arranged on two sides of the two diagonal braces 12 and are used for supporting the trolley and have guiding function.
As shown in fig. 1 and 4, the travelling mechanism 2 includes two power trolleys 21 of adjustable height, two driven trolleys 22 and supporting rollers 23 of non-adjustable height; two power trolleys 21 are symmetrically arranged on two sides of the front portion of the portal structure 1, two driven trolleys 22 are symmetrically arranged on two sides of the rear portion of the portal structure 1, the portal structure 1 is integrally in an inverted U shape, supporting rollers 23 are arranged on the bottom surfaces of two ends of the portal structure 1, and limiting pieces capable of locking the rollers are arranged on the front sides of the supporting rollers 23.
The power trolley 21 can adjust the height through the lifting shaft rod 215 of the power trolley 21, so that the space of a tunnel maintenance channel is utilized for driving, and the driven trolley 22 is arranged at the rear side of the portal structure 1 and can adjust the height as the power trolley 21.
As shown in fig. 4, the two power trolleys 21 include a trolley base, a trolley frame, a forward power source 211, a forward chain 212, a steering power source 213, a steering chain 214 and a lifting shaft 215, the trolley base is fixed at the bottom end of the upright post 13 of the portal structure 1, the bottom surface of the trolley base is connected to the trolley frame through the lifting shaft 215 which can lift up and down and stretch, wheels are installed at the bottom of the trolley frame, the forward power source 211 is installed on the trolley frame and is in transmission connection with the wheels through the forward chain 212, and the steering power source 213 is installed on the trolley frame and is in transmission connection with the shaft through the steering chain 214.
The forward power source 211 is fixed above the wheels, and drives the gantry structure to move forward through the forward chain 212; the steering power source 213 controls the steering of the power trolley through the steering chain 214; the lifting shaft 215 is disposed above the wheels for adjusting the height of the power trolley.
The working platform 4 is arranged at the upper part of the portal structure 1 and is used as a construction platform; the guard rail 5 is arranged around the operation platform 4 to provide guarantee for construction safety.
The guardrail 5 comprises a fixed structure 51 and a railing 52, and the bottom end of the railing 52 is connected with the working platform 4 through the fixed structure 51;
as shown in fig. 7, the fixing structure 51 includes a base 511, a movable rod 512 and a movable bolt 513, the bottom end of the railing 52 is hinged to the base 511 by the movable bolt 513, and the movable rod 512 is disposed above the movable bolt 513, and the movable rod 512 is detachably inserted into the pin holes at the bottom ends of the base 511 and the railing 52. The base 511 is used for installing a fixed rail 52, one end of the base is fixed on the working platform 4, the other end of the base is connected with the rail 52 through a movable rod 512 and a movable bolt 513, the movable rod 512 is pulled out, and the rail 52 can rotate around the movable bolt 523.
The implementation process of the maintenance trolley device is as follows:
1) According to the outline size of the highway tunnel, the lower clearance and the upper operation space of the trolley device are defined, and the height of the upright post 13 and the length and width of the cross beam 11 of the portal structure 1 are determined;
2) Assembling the upper chord member, the lower chord member and the web members by using the connecting plates and the fastening bolts, and sequentially completing the assembly work of the cross beam 11, the diagonal braces 12 and the upright posts 13 to assemble four inverted U-shaped beam column members;
3) The cross beam 11, the diagonal brace 12 and the upright post 13 corresponding parts of the two inverted U-shaped beam column parts are connected into a whole through web member components, and a single portal structure is assembled;
4) The longitudinal tie bars are utilized to connect a plurality of single portal structures into a whole along the longitudinal direction, the single portal structures are fixedly connected through bolts, and the longitudinal length of the trolley device can be adjusted by changing the number of the portal structures;
5) The bottom of the upright post 13 is provided with a travelling mechanism 2, a power trolley 21 in the travelling mechanism 2 is adjusted in height, and after the trolley device is assembled, the trolley device is moved into a highway tunnel by utilizing the advancing and steering functions of the power trolley 21;
6) After entering the highway tunnel, the power trolley 21 is positioned above the maintenance channel or the sidewalk and continuously provides power for the trolley device;
7) The working platform 4 is used for carrying constructors and equipment, and the space below the portal structure 1 is used for normal vehicle operation, so that uninterrupted traffic maintenance construction of the tunnel is realized.
Therefore, the tunnel maintenance and reinforcement construction can be realized under the condition of incompletely closed traffic; secondly, the lateral width of the tunnel detection channel and the lane can be utilized, so that the trolley device is ensured not to occupy the lane, and the influence of construction on normal traffic is reduced; thirdly, the trolley device can be assembled quickly through simple components and connecting mechanisms, is simple to disassemble and convenient to transport, and is favorable for improving construction efficiency.
Claims (9)
1. The utility model provides a road tunnel maintenance platform truck device of uninterrupted traffic which characterized in that:
comprises a portal frame structure (1), a travelling mechanism (2), an operation platform (4) and a guardrail (5); the portal structure (1) stretches across the highway top that is located in the highway tunnel, and portal structure (1) bottom is connected with the both sides ground rolling support of highway through running gear (2), and portal structure (1) top is equipped with operation platform (4) and guardrail (5).
2. The traffic-uninterrupted highway tunnel maintenance trolley device according to claim 1, wherein: the portal structure (1) is in an inverted U shape and comprises four inverted U-shaped beam column parts and a connecting mechanism (3) among the four inverted U-shaped beam column parts;
each inverted U-shaped Liang Zhujian is in an inverted U shape and is formed by connecting a cross beam (11), two inclined struts (12) and two upright posts (13) which are positioned on the same vertical plane, the cross beam (11) is horizontally arranged, the two upright posts (13) are respectively positioned below two sides of the cross beam (11), and the upper ends of the two upright posts (13) are respectively connected with two ends of the cross beam (11) through the inclined struts (12);
the four inverted U-shaped beam column parts are divided into two groups, wherein two inverted U-shaped Liang Zhujian of one group are respectively positioned at the outer periphery and the inner periphery of the front end of the portal structure (1), and two inverted U-shaped Liang Zhujian of the other group are respectively positioned at the outer periphery and the inner periphery of the rear end of the portal structure (1);
the connecting mechanism (3) comprises a longitudinal tie bar (31) and a web member assembly, four inverted U-shaped beam column members at each cross section along the integral inverted U-shape of the portal structure (1) are connected with each other through the longitudinal tie bar (31), and meanwhile, two inverted U-shaped beam column members of the same group are connected with each other through the web member assembly.
3. A road tunnel maintenance trolley device without interrupting traffic according to claim 2, wherein: the longitudinal tie bar (31) comprises a tie bar frame, a female head (311), a male head (312) and a bolt (313), wherein the tie bar frame mainly comprises two horizontal straight bars and a triangular diagonal bar fixedly connected between the two straight bars, the female head (311) is fixedly arranged on the cross beams (11) of the four inverted U-shaped beam column members, and two ends of the two straight bars serving as four ends of four corners are respectively inserted into the female heads (311) of the cross beams (11) of the four inverted U-shaped beam column members and are connected through the bolt (313).
4. A road tunnel maintenance trolley device without interrupting traffic according to claim 2, wherein: the web member assembly comprises web members (113) and connecting plates (32), wherein cross beams (11) in two inverted U-shaped beam column members of the same group are respectively used as an upper chord member (111) and a lower chord member (112), the upper chord member (111) and the lower chord member (112) are connected through W-shaped folded linear web members, each web member is formed by sequentially connecting a plurality of web members (113) which are obliquely arranged, each two adjacent web members (113) which are obliquely arranged are connected through the connecting plates (32), and the connecting plates (32) are positioned at the inflection points of the W-shaped folded linear shapes of the web members;
meanwhile, the connecting plate (32) is also directly fixed on the upper chord member (111)/the lower chord member (112), and the connecting plate (32) is connected with the lower chord member (112)/the upper chord member (111) through a web member (113) which is vertically arranged.
5. A road tunnel maintenance trolley device without interrupting traffic according to claim 2, wherein: the outer side of each diagonal brace (12) is fixedly provided with a guide limit wheel (14).
6. The traffic-uninterrupted highway tunnel maintenance trolley device according to claim 1, wherein: the travelling mechanism (2) comprises two power trolleys (21) with adjustable heights, two driven trolleys (22) and supporting rollers (23) with non-adjustable heights; two power trolleys (21) are symmetrically arranged on two sides of the front portion of the portal structure (1), two driven trolleys (22) are symmetrically arranged on two sides of the rear portion of the portal structure (1), the portal structure (1) is integrally in an inverted U shape, supporting rollers (23) are arranged on the bottom surfaces of two ends of the portal structure (1), and limiting pieces capable of locking the rollers are arranged on the front sides of the supporting rollers (23).
7. The traffic-uninterrupted highway tunnel maintenance trolley device according to claim 6, wherein: the two power trolleys (21) comprise a trolley base, a trolley frame, an advancing power source (211), an advancing chain (212), a steering power source (213), a steering chain (214) and a lifting shaft rod (215), wherein the trolley base is fixed on a portal structure (1), the bottom surface of the trolley base is connected to the trolley frame through the lifting shaft rod (215) which can be lifted up and down to stretch out and draw back, wheels are mounted at the bottom of the trolley frame, the advancing power source (211) is mounted on the trolley frame and connected with the wheels through the advancing chain (212) and the wheels in a transmission manner, and the steering power source (213) is mounted on the trolley frame and connected with the shaft rod in a transmission manner through the steering chain (214).
8. The traffic-uninterrupted highway tunnel maintenance trolley device according to claim 1, wherein: the operation platform (4) is arranged on the upper portion of the portal structure (1), and the guardrails (5) are arranged around the operation platform (4).
9. A road tunnel maintenance trolley device without interrupting traffic according to claim 1 or 8, characterized in that: the guardrail (5) comprises a fixing structure (51) and a railing (52), and the bottom end of the railing (52) is connected with the working platform (4) through the fixing structure (51);
the fixed structure (51) comprises a base (511), a movable rod (512) and a movable bolt (513), wherein the bottom end of the railing (52) is hinged with the base (511) through the movable bolt (513), the movable rod (512) is arranged above the movable bolt (513), and the movable rod (512) is detachably inserted into the pin holes in the base (511) and the bottom end of the railing (52) at the same time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321406884.1U CN220769477U (en) | 2023-06-05 | 2023-06-05 | Road tunnel maintenance trolley device without interrupting traffic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321406884.1U CN220769477U (en) | 2023-06-05 | 2023-06-05 | Road tunnel maintenance trolley device without interrupting traffic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220769477U true CN220769477U (en) | 2024-04-12 |
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ID=90597793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321406884.1U Active CN220769477U (en) | 2023-06-05 | 2023-06-05 | Road tunnel maintenance trolley device without interrupting traffic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220769477U (en) |
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2023
- 2023-06-05 CN CN202321406884.1U patent/CN220769477U/en active Active
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