A centering trolley

Abstract

An arch frame trolley comprises a frame body and a top platform and side platforms arranged on the frame body, the top platform is movably arranged on the top of the frame body and is used for horizontally conveying and lifting the arch frame, and the side platforms are telescopically arranged on both sides of the frame body; the bottom of the frame body is provided with a driving mechanism for controlling the movement of the frame body; compared with the prior art, by arranging the top platform to be movable relative to the frame body, the scheme can drive the top platform to move horizontally alone without moving the whole trolley, thereby accurately and efficiently conveying the arch frame horizontally to the target installation position of the tunnel section, which greatly avoids the inconvenience of frequent starting and stopping, poor positioning accuracy, low efficiency and stability problems caused by moving the whole trolley, realizes the mechanization of arch frame conveying and positioning, and solves the problem that the traditional trolley needs to be moved as a whole to adjust the position of the arch frame.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, specifically to an arch frame trolley. Background Technology

[0002] In traditional mining construction of tunnels, the initial support arches are all manually transported and assembled at the tunnel excavation face. Because the arches are divided into few segments, and each segment is long and heavy, several workers are needed to manually carry, support, erect, and assemble them. During installation, the steel arches are lifted onto a trolley using excavators or other machinery, and then manually transported to the installation location. Transporting the steel arches to the installation location is time-consuming and labor-intensive. The lifting equipment is easily worn during transport, the surface material of the arches is easily damaged, and the steel arches may be bumped and deformed, affecting the material properties. When manually transporting the steel arches, the trolleys lack edge guardrails, posing a risk of falling. The journey to the installation location requires a large number of personnel to lift and carry, which is quite strenuous. Before installation, the position of the steel arches needs to be manually adjusted, resulting in a large number of personnel being exposed under the arch crown, which is time-consuming and poses a high safety risk.

[0003] To address the aforementioned issues, Chinese Patent Application No. 201921626006.4 discloses an automatic installation trolley for tunnel initial support arch frames and the initial support arch frame itself. The disclosed automatic installation trolley for tunnel initial support arch frames includes: a trolley body; a lifting device fixedly connected to the trolley body for lifting the initial support arch frame; and several support devices connected to the trolley body, with one end of each support device used to fix and support the initial support arch frame. The initial support arch frame includes a first support, a second support, and a third support, all of which are detachably connected. The segmented design results in lightweight construction and minimal space occupation. The trolley and the initial support arch frame are installed in conjunction. The lifting device on the trolley body lifts the initial support arch frame, and the support devices fix and support the lifted initial support arch frame into the tunnel, thus achieving the installation of the initial support arch frame. Chinese Patent Application No. 201711020749.2 discloses a steel arch frame installation trolley for treating defects in operating tunnels and a mechanized installation method for steel arch frames for treating defects in operating tunnels. The disclosed arch frame installation trolley includes a steel arch frame installation and operation mechanism, an electrical control part and a hydraulic control part. The steel arch frame installation and operation mechanism includes a railway flatcar, a lifting trolley and a side wall steel arch frame feeding mechanism installed on the railway flatcar, a steel arch frame installation machine and a steel arch frame feeding mechanism for the arch top and arch waist installed on the lifting trolley.

[0004] In the aforementioned existing design, the platform of the trolley is fixed. When the trolley transports the arch frame into the tunnel, the entire trolley needs to be moved to adjust the position of the arch frame in the tunnel to meet the installation requirements. In actual installation, the entire bulky trolley body needs to be moved frequently to fine-tune the installation position of the arch frame. However, this method is inconvenient to operate, has poor positioning accuracy, and moving the entire trolley to align with the installation position is cumbersome, difficult to make fine adjustments, and inefficient. In order to achieve accurate positioning, the trolley needs to be started and stopped frequently, which affects the stability and continuity of the operation. After each movement, the trolley needs to be re-fixed, making the process cumbersome. In addition, in narrow or complex tunnel sections, it is very inconvenient to move the entire trolley to adapt to different installation positions. Utility Model Content

[0005] The present invention aims to overcome the defects in the prior art and provide an arch frame trolley that can achieve precise and convenient installation of the arch frame without frequent trolley movement.

[0006] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: an arch frame trolley, including a frame body and a top platform and side platforms disposed on the frame body. The top platform is movably disposed on the top of the frame body for horizontal transport and lifting of the arch frame, and the side platforms are telescopically disposed on both sides of the frame body. The bottom of the frame body is provided with a drive mechanism for controlling the movement of the frame body.

[0007] As a preferred embodiment of the present invention, the top platform includes a movable platform and a lifting platform disposed on the movable platform for raising and lowering the arch frame. The movable platform is slidably connected to the top of the frame, and the movable platform is provided with a lifting drive component for driving the lifting platform to rise and fall.

[0008] As a preferred embodiment of this utility model, the lifting platform is provided with several slidably connected arch support seats, and the arch frame is erected on the arch support seats.

[0009] As a preferred embodiment of the present invention, the side platform includes a first side platform located above and a second side platform located below, a first ladder connecting the first side platform and the second side platform, and a second ladder provided on the second side platform.

[0010] As a preferred embodiment of the present invention, the first side platform includes a first fixed platform and a first telescopic platform slidably connected to the first fixed platform, and the first fixed platform is provided with a first telescopic drive member for driving the first telescopic platform to move.

[0011] As a preferred embodiment of the present invention, the second side platform includes a second fixed platform and a second telescopic platform slidably connected to the second fixed platform, and the second fixed platform is provided with a second telescopic drive member for driving the second telescopic platform.

[0012] As a preferred embodiment of this utility model, the frame is provided with a first support rod and a second support rod for supporting the first fixed platform and the second fixed platform respectively.

[0013] As a preferred embodiment of this utility model, the bottom of the frame is provided with movable wheels, and the drive mechanism is connected to the movable wheels.

[0014] As a preferred embodiment of this utility model, the frame is further provided with a translational fixing seat, which is located at the front and rear ends of the frame.

[0015] As a preferred embodiment of this utility model, guardrails are provided on both the top platform and the side platform.

[0016] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting the top platform to be movable relative to the frame, this solution can drive the top platform to move horizontally without moving the entire heavy trolley. This allows for precise and efficient horizontal transport of the arch frame to the target installation position directly above the tunnel section. This greatly avoids the inconvenience, poor positioning accuracy, low efficiency, and instability caused by frequent starts and stops and moving the entire trolley. It realizes the mechanization of arch frame transport and positioning, and solves the problem that traditional trolleys need to be moved as a whole to adjust the position of the arch frame. 2. The horizontal and vertical transport of the arch frame is completed by mechanical mechanisms, replacing the traditional method of carrying, supporting and transporting a large amount of manual labor. This not only frees workers from heavy physical labor, but more importantly, it reduces the number of workers exposed to the dangerous unsupported arch roof for a longer period of time, greatly reducing the risk of falls from heights and injuries from collapses, significantly improving operational safety and reducing labor intensity. 3. The movable top platform and the retractable side platform work together to allow the mechanical working range to cover a wider tunnel cross-section area after the trolley is fixed once. There is no need to move the trolley repeatedly for fine-tuning the installation position. It is especially suitable for flexible and efficient arch frame installation in narrow or complex tunnels, enhancing the adaptability of the trolley to tunnel operations. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a side view of the present invention; Figure 3 This is a schematic diagram of the structure of the top platform of this utility model after it has been moved. Reference numerals: Frame 1, Moving wheel 101, Translation fixed seat 102, Top platform 2, Moving platform 201, Lifting platform 202, Arch support 2021, Lifting drive component 203, Side platform 3, First side platform 301, First fixed platform 3011, First telescopic platform 3012, First telescopic drive component 3013, First support rod 3014, Second side platform 302, Second fixed platform 3021, Second telescopic platform 3022, Second telescopic drive component 3023, Second support rod 3024, First ladder 303, Second ladder 304, Drive mechanism 4, Front drive motor 401, Rear drive motor 402, Guardrail 5. Detailed Implementation

[0018] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0019] like Figures 1-3 As shown, an arch frame trolley includes a frame 1 and a top platform 2 and a side platform 3 disposed on the frame 1. The top platform 2 is movably disposed on the top of the frame 1 for horizontal transport and lifting of the arch frame. The side platforms 3 are telescopically disposed on both sides of the frame 1. A drive mechanism 4 for controlling the movement of the frame 1 is provided at the bottom of the frame 1.

[0020] Furthermore, the top platform 2 is slidably connected to the top of the frame 1. The arch frame can be moved horizontally through the top platform 2, and the top platform 2 can also be raised and lowered to lift the arch frame upward, thereby achieving precise adjustment of the arch frame installation position. At the same time, the side platform 3 can extend and retract in the horizontal direction, thereby adjusting the width of both sides of the entire trolley to adapt to tunnels of different widths. This allows the trolley to perform flexible and efficient arch frame installation operations, enhancing the trolley's adaptability to tunnel operations.

[0021] The top platform 2 includes a movable platform 201 and a lifting platform 202 mounted on the movable platform 201 for raising and lowering the arch frame. The movable platform 201 is slidably connected to the top of the frame 1, and the movable platform 201 is provided with a lifting drive component 203 for driving the lifting platform 202 to rise and fall. Furthermore, the movable platform 201 is slidably connected to the top of the frame 1 via rollers. Pushing the movable platform 201 allows it to move along the length of the frame 1. The lifting platform 202 is mounted on the movable platform 201 and can move synchronously with the movable platform 201. The mobile platform 201 enables the transport of the arch frame, eliminating the need for frequent adjustments to the trolley's position. Furthermore, the lifting platform 202 is controlled to move up and down on the mobile platform 201 via a lifting drive 203, which is a hydraulic cylinder. Other drive devices can also be used to drive the lifting platform 202. By using the mobile platform 201 and the lifting platform 202 to transport the arch frame, the inconvenience, poor positioning accuracy, low efficiency, and instability associated with frequent starts and stops and moving the entire trolley are avoided, thus achieving mechanization of arch frame transport and positioning.

[0022] The lifting platform 202 is provided with several slidingly connected arch support 2021. The arch frame is erected on the arch support 2021. Furthermore, the arch support 2021 is set along the length of the lifting platform 202. The arch support 2021 is used to support and fix the arch frame, ensuring that the arch frame will not shake or detach during the transport of the arch frame.

[0023] The side platform 3 includes a first side platform 301 located at the top and a second side platform 302 located at the bottom. A first ladder 303 connects the first side platform 301 and the second side platform 302. A second ladder 304 is provided on the second side platform 302. Furthermore, both the first side platform 301 and the second side platform 302 are located on the side of the frame 1, and the first side platform 301 and the second side platform 302 are provided on both sides of the frame 1. The first side platform 301 is located above the second side platform 302. A first ladder 303 is provided between the first side platform 301 and the second side platform 302, and a second ladder 304 is provided on the second side platform 302. Construction workers can enter the second side platform 302 through the second ladder 304 and enter the first side platform 301 through the first ladder 303.

[0024] The first side platform 301 includes a first fixed platform 3011 and a first telescopic platform 3012 slidably connected to the first fixed platform 3011. The first fixed platform 3011 is provided with a first telescopic drive member 3013 for driving the first telescopic platform 3012 to move. Further, the first fixed platform 3011 is fixedly connected to the side of the frame 1, and the first telescopic platform 3012 is slidably disposed on the first fixed platform 3011. The first telescopic drive member 3013 is provided on the first fixed platform 3011. The first telescopic drive member 3013 is a hydraulic cylinder. The telescopic control of the first telescopic platform 3012 is realized through the first telescopic drive member 3013, so that the first telescopic platform 3012 can move outward in the horizontal direction of the frame 1, thereby increasing or decreasing the size of the first side platform 301.

[0025] The second side platform 302 includes a second fixed platform 3021 and a second telescopic platform 3022 slidably connected to the second fixed platform 3021. The second fixed platform 3021 is provided with a second telescopic drive member 3023 for driving the second telescopic platform 3022. Further, the second fixed platform 3021 is fixedly connected to the side of the frame 1, and the second telescopic platform 3022 is slidably disposed on the second fixed platform 3021. A first telescopic drive member 3013 is provided on the second fixed platform 3021. The second telescopic drive member 3023 is a hydraulic cylinder. The telescopic control of the second telescopic platform 3022 is realized through the second telescopic drive member 3023, so that the second telescopic platform 3022 can move outward in the horizontal direction of the frame 1, thereby increasing or decreasing the size of the second side platform 302.

[0026] The frame 1 is provided with a first support rod 3014 and a second support rod 3024 for supporting the first fixed platform 3011 and the second fixed platform 3021 respectively. Further, one end of the first support rod 3014 is connected to the frame 1, and the other end is connected to the bottom of the first fixed platform 3011. The first support rod 3014 supports the first fixed platform 3011, thereby increasing its load-bearing capacity and improving its stability. One end of the second support rod 3024 is connected to the frame 1, and the other end is connected to the top of the second fixed platform 3021. The second support rod 3024 supports the second fixed platform 3021, thereby increasing its load-bearing capacity and improving its stability.

[0027] The frame 1 has a movable wheel 101 at the bottom, and the drive mechanism 4 is connected to the movable wheel 101. Furthermore, the movable wheel 101 is located at the front and rear ends of the frame 1. The drive mechanism 4 includes a front drive motor 401 and a rear drive motor 402. The front drive motor 401 is located at the front end of the frame 1 and is connected to the front movable wheel 101. The rear drive motor 402 is located at the rear end of the frame 1 and is connected to the rear movable wheel 101. The trolley is driven to move by the front drive motor 401 and the rear drive motor 402.

[0028] The frame 1 is also equipped with a translational fixing seat 102. The translational fixing seat 102 is located at the front and rear ends of the frame 1. The translational fixing seat 102 is located at the moving wheels 101 at the front and rear ends of the frame 1. By setting the translational fixing seat 102, when the trolley moves to the appropriate position, the translational fixing seat 102 abuts against the bottom surface, thereby realizing the stable docking of the trolley and ensuring that the trolley can remain stable when conveying the arch frame on the top platform 2.

[0029] Guardrails 5 are installed on both the top platform 2 and the side platform 3. The guardrails 5 are located at the edges of the mobile platform 201, the first fixed platform 3011, the first telescopic platform 3012, the second fixed platform 3021 and the second telescopic platform 3022. The guardrails 5 improve the protective capabilities of the platform, thereby preventing construction workers from falling off the platform and improving safety.

[0030] In addition, the frame 1 is also equipped with a power distribution box for providing power and a hydraulic station for connecting with the lifting drive 203, the first telescopic drive 3013 and the second telescopic drive 3023.

[0031] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0032] Although this document frequently uses reference numerals from the accompanying drawings, such as frame 1, moving wheel 101, translational fixed seat 102, top platform 2, moving platform 201, lifting platform 202, arch support 2021, lifting drive component 203, side platform 3, first side platform 301, first fixed platform 3011, first telescopic platform 3012, first telescopic drive component 3013, first support rod 3014, second side platform 302, second fixed platform 3021, second telescopic platform 3022, second telescopic drive component 3023, second support rod 3024, first ladder 303, second ladder 304, drive mechanism 4, front drive motor 401, rear drive motor 402, and guardrail 5, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. An arched trolley, comprising a frame (1) and a top platform (2) and side platforms (3) disposed on the frame (1), characterized in that, The top platform (2) is movably mounted on the top of the frame (1) for horizontal transport and lifting of the arch frame. The side platforms (3) are telescopically mounted on both sides of the frame (1). The bottom of the frame (1) is provided with a drive mechanism (4) for controlling the movement of the frame (1). The top platform (2) includes a moving platform (201) and a lifting platform (202) mounted on the moving platform (201) for lifting the arch frame. The moving platform (201) is slidably connected to the top of the frame (1), and the moving platform (201) is provided with a lifting drive component (203) for driving the lifting platform (202) to lift. The side platforms (3) include a first side platform (301) located above and a side platform (301) located below. The second side platform (302) of the first side platform (301) includes a first fixed platform (3011) and a first telescopic platform (3012) slidably connected to the first fixed platform (3011). The first fixed platform (3011) is provided with a first telescopic drive member (3013) for driving the first telescopic platform (3012) to move. The second side platform (302) includes a second fixed platform (3021) and a second telescopic platform (3022) slidably connected to the second fixed platform (3021). The second fixed platform (3021) is provided with a second telescopic drive member (3023) for driving the second telescopic platform (3022).

2. The arch frame trolley according to claim 1, characterized in that, The lifting platform (202) is provided with several slidingly connected arch support seats (2021), and the arch frame is erected on the arch support seats (2021).

3. The arch frame trolley according to claim 1, characterized in that, A first ladder (303) is connected between the first side platform (301) and the second side platform (302), and a second ladder (304) is provided on the second side platform (302).

4. The arch frame trolley according to claim 1, characterized in that, The frame (1) is provided with a first support rod (3014) and a second support rod (3024) for supporting the first fixed platform (3011) and the second fixed platform (3021) respectively.

5. The arch frame trolley according to claim 1, characterized in that, The frame (1) is provided with a movable wheel (101) at the bottom, and the drive mechanism (4) is connected to the movable wheel (101).

6. The arch frame trolley according to claim 1, characterized in that, The frame (1) is also provided with a translation fixing seat (102), which is located at the front and rear ends of the frame (1).

7. The arch frame trolley according to claim 1, characterized in that, Guardrails (5) are provided on both the top platform (2) and the side platform (3).

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