Rebar trolley with laser positioning device

Abstract

The utility model relates to a reinforcing steel bar trolley with laser positioning device, including portal system, running mechanism, jacking mechanism and laser positioning device, and running mechanism and jacking mechanism all set up in the bottom of portal system, laser positioning device installs on the reinforcing steel bar binding platform of portal system, and laser positioning device includes channel steel, first laser lamp and second laser lamp, channel steel is along reinforcing steel bar binding direction and is arranged, and the laser lamp fixed groove is established along the length direction in the center, first laser lamp and second laser lamp install in the laser lamp fixed groove, to project two mutually staggered positioning points to the segment or reinforcing steel mounting area, for determining the staggered position of reinforcing steel joint, first laser lamp and second laser lamp can adjust the position along the length direction of channel steel and are fixed through fastener, the utility model realizes reinforcing steel joint accurate staggered arrangement, improves secondary lining reinforcing steel bar binding construction quality and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction equipment technology, and in particular to a steel bar trolley with a laser positioning device. Background Technology

[0002] With the widespread application of shield tunneling in large-diameter, deep-buried, and cross-river / sea tunnel projects, the structural form of shield tunnels is gradually adopting a combination of segment lining and secondary lining. The secondary lining is typically composed of reinforced concrete. Because the construction joints of shield tunnels are parallel to the longitudinal reinforcement direction and are poured in multiple segments, to ensure structural continuity and construction quality, the reinforcement joints usually need to be staggered between different construction sections and precisely positioned according to specifications. Currently, in engineering construction, reinforcement trolleys are commonly used for secondary lining reinforcement binding, with reinforcement joints arranged and positioned manually on the segments or formwork surfaces or based on experience.

[0003] However, existing manual positioning methods have significant drawbacks: Firstly, relying on workers' visual inspection or manual marking to determine the location of rebar joints is easily affected by factors such as the construction environment, personnel experience, and limited field of vision, leading to a large accumulation of joint position errors. This makes it difficult to effectively ensure that the rebar joints are staggered as required, thus affecting the integrity and construction quality of the secondary lining concrete structure. Secondly, manual marking is time-consuming and labor-intensive. As the construction height increases, personnel need to frequently travel between multiple platforms of the rebar trolley or operate at heights, resulting in low construction efficiency and certain safety risks. Furthermore, manual marking is not easy to maintain an aesthetically pleasing and consistent arrangement, which can easily cause positioning deviations and rework problems during subsequent binding construction, hindering the high-quality and high-efficiency construction requirements of tunnel engineering. Utility Model Content

[0004] In view of the above-mentioned defects of the existing technical solutions, the main purpose of this utility model is to develop a steel bar trolley with a laser positioning device, so as to achieve precise staggered arrangement of steel bar joints and improve the quality and efficiency of secondary lining steel bar binding construction.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A rebar trolley with a laser positioning device includes a gantry system, a traveling mechanism, a lifting mechanism, and the laser positioning device. The traveling mechanism and the lifting mechanism are both located at the bottom of the gantry system. The laser positioning device is installed on the rebar tying platform of the gantry system and includes a channel steel, a first laser light, and a second laser light. The channel steel is arranged along the rebar tying direction and has a laser light fixing groove along its length at its center. The first and second laser lights are installed in the laser light fixing groove to project two staggered positioning points onto the pipe segment or rebar installation area to determine the staggered position of the rebar joint. The first and second laser lights are adjustable along the length of the channel steel and fixed with fasteners to determine the rebar joint installation position according to the required staggered distance of the rebar joint.

[0006] Preferably, the first and second laser lights are equipped with angle adjustment components to adjust the laser irradiation direction.

[0007] Preferably, the channel steel is a 1m long No. 5 channel steel, and is fixed to the rebar binding platform on the gantry system by welding.

[0008] Preferably, the width of the laser lamp fixing groove is 1 cm.

[0009] Preferably, the length of the laser lamp fixing groove is 80cm.

[0010] Preferably, the fastener is a nut, which is located at the bottom of the first laser lamp and the second laser lamp and locked to the channel steel.

[0011] Preferably, there are multiple laser positioning devices, which are set on different rebar binding platforms along the height direction of the gantry system.

[0012] Preferably, the first laser lamp and the second laser lamp have a power cord protection structure and a waterproof cover.

[0013] Preferably, the traveling mechanism includes traveling wheels and a drive device for moving the gantry system along the tunnel direction.

[0014] Preferably, the lifting mechanism is a jack used to adjust the height between each platform and the template surface.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention utilizes a laser positioning device deployed on a rebar trolley, enabling the rebar ends to be directly installed based on the positioning points projected by the laser, thus achieving precise pre-control of the staggered position of the rebar joints. Compared to the traditional method of rebar joint positioning relying on manual measurement and marking, this method effectively avoids the cumulative deviation problem caused by manual layer-by-layer binding from top to bottom, ensuring that the staggered distance of the rebar joints meets relevant specifications, and significantly improving the accuracy and consistency of rebar layout. The laser positioning device of this invention has a reasonable structural layout, which can form a visual positioning benchmark at different height platform positions. Construction personnel do not need to mark the segments with a stone pencil; they can directly complete the rebar end installation according to the laser projection points. This not only reduces the number of steps and shortens the construction cycle but also reduces the frequency of high-altitude operations, improving overall work efficiency. At the same time, the use of laser positioning ensures a neat and aesthetically pleasing rebar layout, reduces the probability of rework, and improves the overall quality performance of the secondary lining rebar system. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is an overall schematic diagram of the steel bar trolley with a laser positioning device according to this utility model. Figure 2 This is a schematic diagram of the rebar joint positioning of the rebar trolley with laser positioning device according to this utility model. Figure 3 This is a front view of the laser positioning device of this utility model. Figure 4 This is a side view of the installation of the laser positioning device of this utility model; Figure 5 This is a schematic diagram of the top surface of the laser positioning device of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1-Gantry system; 2-Traveling mechanism; 3-Lifting mechanism; 4-Laser positioning device; 41-Channel steel; 411-Laser lamp fixing slot; 42-First laser lamp; 43-Second laser lamp; 44-Fastener. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model belong to the present utility model.

[0020] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0021] Please see Figure 1-5 This embodiment discloses a rebar trolley with a laser positioning device, including a gantry system 1, a traveling mechanism 2, a lifting mechanism 3, and a laser positioning device 4. The traveling mechanism 2 and the lifting mechanism 3 are both located at the bottom of the gantry system 1 to ensure that the rebar trolley can move and adjust its height in the tunnel. The gantry system 1 is the main supporting structure of the rebar tying construction platform, supporting multiple operating platforms so that construction personnel can complete rebar tying operations at different heights.

[0022] The laser positioning device 4 is installed on the rebar binding platform of the gantry system 1. It is used to project positioning light points to form a visual positioning benchmark before the rebar is laid out. The laser positioning device 4 includes a channel steel 41, a first laser lamp 42, and a second laser lamp 43. The channel steel 41 is laid out along the rebar binding direction and has a laser lamp fixing groove 411 at its center along the length direction. The laser lamp fixing groove 411 is used to accommodate the laser lamp body and limit its lateral swing, so that the laser irradiation direction is more stable and reliable. The first laser lamp 42 and the second laser lamp 43 are installed in the laser lamp fixing groove 411 to project two mutually staggered positioning points onto the pipe segment or rebar installation area to determine the staggered position of the rebar joint. Construction personnel can directly align the rebar end with the laser irradiation point to quickly and accurately position the rebar joint, avoiding the cumulative position deviation caused by manual measurement, and improving the standardization and aesthetics of the rebar layout.

[0023] The first laser light 42 and the second laser light 43 can be adjusted in position along the length of the channel steel 41 and fixed by fasteners 44. They are used to determine the installation position of the rebar joints according to the staggered distance requirements of the rebar joints. The positioning point spacing can be changed by loosening the fasteners 44 and adjusting the position of the laser lights to adapt to the rebar joint layout requirements of different specifications and different locations. It has good construction flexibility and wide applicability. At the same time, the laser positioning device 4 reduces the manual marking process, improves the binding efficiency, and reduces the safety risks of construction personnel operating at heights.

[0024] In this embodiment, the first laser lamp 42 and the second laser lamp 43 are equipped with angle adjustment components to adjust the laser irradiation direction. The angle adjustment components are used to change the beam direction of the laser lamp by rotation or fine adjustment, so that the laser irradiation point can be accurately projected onto the end area of ​​the rebar at different heights or positions, thereby expanding the positioning range and adapting to complex rebar layout scenarios, ensuring positioning accuracy and construction flexibility.

[0025] Please see Figure 3-5 The channel steel 41 is a 1m long No. 5 channel steel, which is fixed to the rebar tying platform on the gantry system 1 by welding. The channel steel 41 serves as the reference component for laser lamp installation; its length covers the working area where the rebar joints are laid out. The welding method ensures a firm and reliable installation, preventing displacement due to construction vibrations. The laser lamp fixing slot 411 is 1cm wide, designed to accommodate the shape of the first laser lamp 42 and the second laser lamp 43, allowing the laser device to be embedded and obtain necessary lateral constraint, thus maintaining beam stability. The laser lamp fixing slot 411 is 80cm long and located in the middle area of ​​the channel steel 41. This length allows the first laser lamp 42 and the second laser lamp 43 to slide and adjust within a large range to accommodate different joint spacing requirements, enabling rapid switching between multiple different rebar arrangement positions. Fastener 44 can be a nut, which is set at the bottom of the first laser light 42 and the second laser light 43 and locked with the channel steel 41. By tightening the nut, the laser light can be locked in the desired position. After adjustment, the laser light is prevented from being displaced due to vibration or operation collision, so that the positioning of the rebar joint is accurate and reliable and not prone to deviation.

[0026] In addition, there are multiple laser positioning devices 4, which are set on different rebar binding platforms along the height direction of the gantry system 1. Multiple laser positioning devices 4 can correspond to multiple layers of rebar laying operation surfaces. Construction personnel on each platform can install rebar joints according to the laser positioning points without having to repeatedly measure and position across layers. This ensures that the rebar joints at different heights are staggered in a consistent manner, improving the continuity and aesthetics of the overall rebar laying.

[0027] The first laser light 42 and the second laser light 43 have power cord protection structures and waterproof covers. The power cord protection structure can prevent the cable from being scratched and damaged during construction or affecting personnel passage. The waterproof cover can prevent the internal structure of the laser light from being corroded or short-circuited by the damp environment of the tunnel or concrete slurry, ensuring that the laser positioning device 4 works stably under harsh working conditions.

[0028] Please see Figure 1 The traveling mechanism 2 includes wheels and a drive unit, used to move the gantry system 1 along the tunnel direction. The wheels, in conjunction with the drive unit, allow the rebar trolley to advance with the construction progress, enabling rapid movement from one construction section to the next. This reduces the workload of repeatedly erecting construction platforms, improves construction efficiency, and reduces the safety risks associated with manual equipment handling. The lifting mechanism 3 uses jacks to adjust the height between each platform and the formwork surface. The height adjustment function of the lifting mechanism 3 ensures that the laser positioning point and the rebar binding operation surface are in a reasonable position, thus making the placement of the rebar ends more accurate, meeting the adaptability requirements caused by the height difference of different pouring sections, and improving the operating comfort and stress rationality of construction personnel.

[0029] The operation steps of the rebar trolley with laser positioning device in this embodiment are as follows: A 1m long No. 5 channel steel 41 is welded to each platform of the rebar tying trolley. A 1cm wide laser lamp fixing groove 411 is cut at the center of the channel steel 41 for inserting the first laser lamp 42 and the second laser lamp 43. After placing the laser lamp in the laser lamp fixing groove 411, the sliding position of the laser lamp on the channel steel 41 is determined according to the staggered distance requirement of the rebar joints, and fixed by the nut in the fastener 44, so that the position of the laser beam projection serves as the reference point for rebar joint installation. After completing the positioning adjustment, the laser lamp is turned on, so that the beam forms a visual positioning mark in the pipe segment or rebar installation area. Construction personnel perform rebar end alignment and binding operations according to the laser irradiation point, thus completing the precise staggered arrangement of the rebar joints, improving rebar installation efficiency and ensuring positioning quality.

[0030] In summary, this utility model discloses a rebar trolley with a laser positioning device. By arranging channel steel 41 on the rebar binding platform of the gantry system 1, and adjusting the first laser light 42 and the second laser light 43 in the laser light fixing slot 411, the positioning points of the rebar joints can be intuitively projected and precisely adjusted. Combined with the traveling mechanism 2 and the lifting mechanism 3, it can move flexibly and adjust its height within the shield tunnel, completing the rapid layout and positioning of the rebar joints throughout the entire section. This embodiment has the technical advantages of high positioning accuracy, simple installation and operation, and significantly improved construction efficiency. It can effectively avoid the cumulative errors caused by manual layer-by-layer positioning, ensure the quality of staggered rebar joint arrangement, and improve the aesthetics of the rebar binding. Replacing traditional manual marking with laser positioning helps reduce construction time, labor intensity, and human error, while improving the level of project quality control. It has positive significance for improving the intelligence and standardization of shield tunnel secondary lining construction, and is suitable for high-quality secondary lining rebar construction scenarios such as deep-buried and ultra-long shield tunnels, with good promotion and application value.

[0031] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A steel bar trolley equipped with a laser positioning device, characterized in that, It includes a gantry system (1), a traveling mechanism (2), a lifting mechanism (3), and a laser positioning device (4), wherein the traveling mechanism (2) and the lifting mechanism (3) are both located at the bottom of the gantry system (1); The laser positioning device (4) is installed on the rebar binding platform of the gantry system (1). The laser positioning device (4) includes a channel steel (41), a first laser lamp (42), and a second laser lamp (43). The channel steel (41) is arranged along the rebar binding direction and has a laser lamp fixing groove (411) in its center along the length direction. The first laser lamp (42) and the second laser lamp (43) are installed in the laser lamp fixing groove (411) to project two mutually staggered positioning points onto the pipe segment or rebar installation area to determine the staggered position of the rebar joint. The first laser lamp (42) and the second laser lamp (43) can be adjusted along the length direction of the channel steel (41) and fixed by fasteners (44) to determine the rebar joint installation position according to the rebar joint staggered distance requirement.

2. The steel bar trolley with laser positioning device according to claim 1, characterized in that, The first laser lamp (42) and the second laser lamp (43) are provided with angle adjustment components to adjust the laser irradiation direction.

3. The steel bar trolley with laser positioning device according to claim 2, characterized in that, The channel steel (41) is a 5# channel steel with a length of 1m, and is fixed to the steel bar binding platform on the gantry system (1) by welding.

4. The steel bar trolley with laser positioning device according to claim 3, characterized in that, The width of the laser lamp fixing groove (411) is 1cm.

5. The steel bar trolley with laser positioning device according to claim 4, characterized in that, The length of the laser lamp fixing slot (411) is 80cm.

6. The steel bar trolley with laser positioning device according to any one of claims 1-5, characterized in that, The fastener (44) is a nut, which is located at the bottom of the first laser lamp (42) and the second laser lamp (43) and locked with the channel steel (41).

7. The steel bar trolley with laser positioning device according to claim 1, characterized in that, The laser positioning device (4) is multiple and is set on different steel bar binding platforms along the height direction of the gantry system (1).

8. The steel bar trolley with laser positioning device according to claim 1, characterized in that, The first laser lamp (42) and the second laser lamp (43) have a power cord protection structure and a waterproof cover.

9. The steel bar trolley with laser positioning device according to claim 1, characterized in that, The traveling mechanism (2) includes traveling wheels and a drive device for moving the gantry system (1) along the tunnel direction.

10. The steel bar trolley with laser positioning device according to claim 9, characterized in that, The lifting mechanism (3) uses jacks to adjust the height between each platform and the template surface.

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