Modularized tool transfer trolley for subway tunnel maintenance construction

Abstract

The utility model belongs to the technical field of subway construction maintenance equipment, and particularly relates to a modularized tool transfer trolley for subway tunnel maintenance construction, which comprises a bottom foundation trolley, a lifting device and a bearing platform, the bottom of the lifting device is detachably hinged to the middle position of the top of the bottom foundation trolley. And measuring prisms are arranged at four corners of the top of the bottom foundation trolley. The modular design is adopted, the tool transfer trolley is divided into the bottom basic trolley, the lifting device and the bearing platform, the tool transfer trolley can be conveniently carried to a construction site, the three modules are assembled into a whole in a detachable mode on the construction site, tools, machines, materials and the like can be directly carried to the construction site, and the construction efficiency is improved. The carrying time is greatly saved, the construction efficiency is improved, the measuring prisms at the four corners of the bottom foundation trolley can be in linkage with monitoring equipment on a construction site, and it is guaranteed that the tunnel structure is safe and stable in the construction process.

Description

Technical Field

[0001] The utility model belongs to the technical field of subway construction and maintenance equipment, and in particular relates to a modular tool transfer trolley for subway tunnel maintenance construction. Background Art

[0002] In recent years, my country's urban infrastructure has gradually improved. During the construction of various infrastructures, it is inevitable that they will be constructed close to the subway. In addition, due to defects during the construction period and factors such as train dynamic loads, the subway will inevitably have various diseases. The current subway project is changing from "construction-oriented" to "construction and maintenance". According to statistics, shield tunnels account for more than 70% of subway projects, and the maintenance of operating subway shield tunnels can only be carried out at "window points". At present, the tool transfer vehicles used for the maintenance and construction of operating subway shield tunnels are mainly flatbed vehicles. Due to the short window time, narrow space in the tunnel, many tools for treatment, and heavy weight, during actual construction on site, the height difference between the subway platform and the track is large. In the past, the transportation of bulk equipment and materials could only be carried by personnel to the trolley on the track. The labor intensity of workers was high and the safety was poor. The tool transfer time could account for 1 / 3 of the window time, resulting in extremely low construction efficiency. There are many problems with the existing method. It cannot adapt to the height difference between the subway track and the platform, which makes it difficult to transfer tools and has a great impact on the existing platform equipment during the transportation process. When there are monitoring requirements at the construction site, conventional flatbed trucks often block the on-site monitoring prism and other measurement points, resulting in the inability to upload data in a timely manner, and thus the inability to grasp the track and tunnel structure data, which affects the construction progress and safety. Therefore, in order to improve construction efficiency, reduce the labor intensity of workers, save costs, ensure the safety of construction personnel, and reduce damage to existing equipment, it is necessary to design a modular transfer trolley that can meet the construction and maintenance of skylight points in narrow spaces in operating subway shield tunnels. Utility Model Content

[0003] In order to overcome the deficiencies of the above-mentioned prior art, the purpose of the utility model is to provide a modular tool transfer trolley for subway tunnel maintenance construction, which can improve construction efficiency, reduce the labor intensity of workers, and ensure the safety and stability of the tunnel structure during the construction process.

[0004] To achieve the above-mentioned purpose, the technical solution of the utility model is a modular tool transfer trolley for subway tunnel maintenance and construction, including a bottom base trolley, a lifting device and a carrying platform, the carrying platform and the top of the lifting device are detachably fixed, and the bottom of the lifting device and the middle position of the top of the bottom base trolley are detachably hinged; the four corners of the top of the bottom base trolley are provided with measuring prisms.

[0005] As one of the implementation modes, the bottom base trolley includes a rectangular frame and rubber wheels installed at four corners of the bottom of the rectangular frame, and the measuring prisms are installed at four corners of the top of the rectangular frame.

[0006] As one of the implementation modes, a positioning connection structure is provided in the middle of the top of the rectangular frame, and the bottom of the lifting device is detachably hinged to the positioning connection structure.

[0007] As one of the implementation modes, the rectangular frame is formed by welding rectangular hollow profiles.

[0008] As one of the embodiments, the lifting device includes a folding frame and a driving mechanism for driving the folding frame to unfold or fold in a vertical direction, the top of the folding frame is detachably fixed to the carrying platform, and the bottom of the folding frame is detachably hinged to the bottom base trolley.

[0009] As one of the embodiments, the folding frame includes two X-shaped frames arranged opposite to each other and two longitudinal connecting plates arranged opposite to each other; the two ends of the top of one of the X-shaped frames are connected to the two ends of the top of the other X-shaped frame through two upper transverse support rods, and the two ends of the bottom of one of the X-shaped frames are connected to the two ends of the bottom of the other X-shaped frame through two lower transverse support rods; the two ends of one of the upper transverse support rods are fixedly connected to the two longitudinal connecting plates, and the two ends of the other upper transverse support rod are slidably connected to the two longitudinal connecting plates.

[0010] As one of the implementation modes, one end of the two lower transverse support rods is hinged to the bottom base trolley through two first diagonal braces, and the other end of the two lower transverse support rods is hinged to the bottom base trolley through two first diagonal braces.

[0011] As one of the implementation modes, the driving mechanism includes a self-locking screw, one end of which is threadedly connected to one of the lower transverse support rods, and the other end of which is rotatably connected to the other lower transverse support rod.

[0012] As one of the implementation modes, the X-shaped frame includes two second diagonal braces, and the middle parts of the two second diagonal braces are hinged.

[0013] As one of the embodiments, the longitudinal connecting plate is an L-shaped structure, the horizontal part of the longitudinal connecting plate is connected to the supporting platform by a pin, a sliding groove is provided on the vertical part of the longitudinal connecting plate, and the end of the upper transverse support rod is slidably installed in the corresponding sliding groove.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model adopts a modular design, which divides the tool transfer trolley into three modules: a bottom base trolley, a lifting device, and a carrying platform, which is convenient for carrying to the construction site, and the three modules are assembled into a whole in a detachable manner at the construction site. By adjusting the lifting device, the carrying platform is raised to the same height as the subway platform, so that tools, materials, etc. can be directly pushed to the carrying platform without the need for workers to carry them up and down. After the transportation is completed, the lifting platform is lowered to the lowest end and pushed to the construction site manually, which greatly saves transportation time, improves construction efficiency, reduces the labor workload of workers, and ensures transportation safety. In addition, measuring prisms are provided at the four corners of the top of the bottom base trolley, which can be linked with the monitoring equipment at the construction site to accurately measure the elevation and plane data of the construction trolley position track, thereby eliminating the influence of conventional flatbed carts on construction site monitoring and ensuring the safety and stability of the tunnel structure during construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the structure of a bottom base trolley provided in an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of the structure of a lifting device provided in an embodiment of the utility model;

[0019] Figure 3 A schematic diagram of the structure of the overall device provided by the embodiment of the utility model;

[0020] Figure 4 A schematic diagram of the on-site use of a modular tool transfer vehicle for subway tunnel maintenance and construction provided by an embodiment of the utility model;

[0021] In the figure: 1. rectangular frame; 2. rubber wheel; 3. positioning connection structure; 4. first diagonal brace; 5. second diagonal brace; 6. lower transverse support rod; 7. self-locking screw; 8. longitudinal connecting plate; 8-1. slide groove; 8-2. first positioning connection hole; 9. bearing platform; 9-1. second positioning connection hole; 10. long pin; 11. measuring prism; 12. upper transverse support rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the present utility model, unless otherwise specified, "plurality" means two or more.

[0025] like Figure 1-Figure 4 As shown, this embodiment provides a modular tool transfer trolley for subway tunnel maintenance construction, including a bottom base trolley, a lifting device and a load-bearing platform 9, wherein the load-bearing platform 9 is detachably fixed to the top of the lifting device, and the bottom of the lifting device is detachably hinged to the middle position of the top of the bottom base trolley; measuring prisms 11 are provided at the four corners of the top of the bottom base trolley.

[0026] This embodiment adopts a modular design, dividing the tool transfer trolley into three modules: a bottom base trolley, a lifting device, and a carrying platform 9, which is convenient for transportation to the construction site, and the three modules are assembled into a whole in a detachable manner at the construction site. By adjusting the lifting device, the carrying platform 9 is raised to the same height as the subway platform, so that tools, materials, etc. can be directly pushed to the carrying platform 9 without the need for workers to carry them up and down. After the transportation is completed, the lifting platform is lowered to the lowest end and pushed to the construction site manually, which greatly saves transportation time, improves construction efficiency, reduces the workload of workers, and ensures transportation safety. In addition, measuring prisms 11 are provided at the four corners of the top of the bottom base trolley, which can be linked with the monitoring equipment at the construction site to accurately measure the elevation and plane data of the construction trolley position track, thereby eliminating the influence of conventional flatbed carts on construction site monitoring and ensuring the safety and stability of the tunnel structure during construction.

[0027] As one of the implementation modes, the bottom base trolley includes a rectangular frame 1 and rubber wheels 2 installed at four corners of the bottom of the rectangular frame 1 , and the measuring prisms 11 are installed at four corners of the top of the rectangular frame 1 .

[0028] Furthermore, a positioning connection structure 3 is provided in the middle of the top of the rectangular frame 1, and the bottom of the lifting device is detachably hinged to the positioning connection structure 3. Figure 1 As shown, two positioning connection structures 3 are welded in the middle of the top of the rectangular frame 1, and each positioning connection structure 3 is provided with a hinge hole penetrating in the transverse direction, and the bottoms of the folding frames on both sides are hinged to the two positioning connection structures 3 respectively.

[0029] Preferably, the rectangular frame 1 is welded from rectangular hollow profiles, which not only has high strength and rigidity to ensure sufficient support and stability, but also greatly reduces the weight of the trolley and facilitates transportation.

[0030] In this embodiment, the lifting device includes a folding frame and a driving mechanism for driving the folding frame to unfold or fold in the vertical direction, the top of the folding frame is detachably fixed to the carrying platform 9, and the bottom of the folding frame is detachably hinged to the bottom base trolley. The folding frame is driven by the driving mechanism to unfold or fold in the vertical direction, thereby realizing the rise and fall of the carrying platform 9.

[0031] like Figure 2 As shown, the folding frame includes two X-shaped frames arranged opposite to each other and two longitudinal connecting plates 8 arranged opposite to each other; the two ends of the top of one of the X-shaped frames are connected to the two ends of the top of the other X-shaped frame through two upper transverse support rods 12, and the two ends of the bottom of one of the X-shaped frames are connected to the two ends of the bottom of the other X-shaped frame through two lower transverse support rods 6; the two ends of one of the upper transverse support rods 12 are fixedly connected to the two longitudinal connecting plates 8, and the two ends of the other upper transverse support rod 12 are slidably connected to the two longitudinal connecting plates 8.

[0032] Furthermore, one end of the two lower transverse support rods 6 is respectively hinged to the bottom base trolley through two first diagonal braces 4, and the other end of the two lower transverse support rods 6 is respectively hinged to the bottom base trolley through two first diagonal braces 4. Figure 2As shown, there are four first diagonal struts 4 in total, two on each side, and the upper ends of the two first diagonal struts 4 on each side are respectively connected to the two lower transverse support rods 6, and the lower ends of the two first diagonal struts 4 on each side are hinged to the same positioning connection structure 3. Specifically, a long pin 10 is passed through the positioning connection structure 3 and the circular holes on the four first diagonal struts 4, so that the first diagonal struts 4 on both sides are respectively hinged to the positioning connection structures 3 on both sides, and a rotating pair is formed, thereby realizing the assembly of the bottom base trolley and the lifting device.

[0033] The above embodiment is optimized, and the driving mechanism includes a self-locking screw 7, one end of which is threadedly connected to one of the lower transverse support rods 6, and the other end of which is rotatably connected to the other lower transverse support rod 6. The self-locking screw 7 is arranged in the longitudinal direction, and one end of the self-locking screw 7 is provided with a thread, and one of the lower transverse support rods 6 is provided with a threaded hole matching the thread on the self-locking thread, which acts as a nut and also has a self-locking function, and the threaded end of the self-locking screw 7 is connected to the threaded hole by a thread; the other lower transverse support rod 6 is provided with a through hole and a bearing installed, and the other end of the self-locking screw 7 is installed in the bearing. Preferably, a handle is provided at the end of the threaded end of the self-locking screw 7 for easy rotation. By adopting the self-locking screw 7 for manual operation, the weight of the lifting device can be reduced, and the increase in the weight of the trolley and the increase in the difficulty of handling caused by the use of hydraulic lifting can be avoided.

[0034] like Figure 2 As shown, the folding frame of this embodiment adopts a parallelogram folding structure, and the angle of the quadrilateral is adjusted by the self-locking screw 7 nut with a self-locking function to complete the lifting. Specifically, by rotating the self-locking screw 7, the two lower transverse support rods 6 will approach or move away from each other; when the two lower transverse support rods 6 approach each other, the angle between the first diagonal support 4 and the second diagonal support 5 increases, so that the bearing platform 9 rises; similarly, when the two lower transverse support rods 6 move away from each other, the angle between the first diagonal support 4 and the second diagonal support 5 decreases, so that the bearing platform 9 descends.

[0035] In this embodiment, the X-shaped frame includes two second diagonal braces 5, and the middle parts of the two second diagonal braces 5 are hinged. There are four second braces in total, two on each side, and the two second diagonal braces 5 on each side are hinged in the middle to form an X-shaped frame. For the X-shaped frame on each side, the lower ends of the two second diagonal braces 5 are respectively connected to the two lower transverse support rods 6, and the upper ends of the two second diagonal braces 5 are respectively connected to the two upper transverse support rods 12.

[0036] Optimizing the above embodiment, the longitudinal connecting plate 8 is an L-shaped structure, the horizontal part of the longitudinal connecting plate 8 is connected to the bearing platform 9 by a pin, and the vertical part of the longitudinal connecting plate 8 is provided with a slide groove 8-1, and the end of the upper transverse support rod 12 is slidably installed in the corresponding slide groove 8-1. Figure 2 As shown, the vertical part of the longitudinal connecting plate 8 is provided with a slide groove 8-1 and a fixed connection hole. The fixed connection hole is provided at one end of the vertical part. The slide groove 8-1 extends longitudinally and extends from a position close to the fixed connection hole to the other end. The size of the slide groove 8-1 matches the diameter of the upper transverse support rod 12 to ensure that the upper transverse support rod 12 can slide freely in the slide groove 8-1; among the two upper transverse support rods 12, the two ends of one of the upper transverse support rods 12 are respectively fixedly connected to the fixed connection holes of the two longitudinal connecting plates 8, and the two ends of the other upper transverse support rod 12 are respectively slidably installed in the slide grooves 8-1 of the two longitudinal connecting plates 8.

[0037] In this embodiment, the bearing platform 9 is a flat plate made of high-strength titanium alloy, which has high structural rigidity, strong stability, and is easy for personnel to carry. A plurality of first positioning connection holes 8-2 arranged at intervals are provided on the horizontal portion of the longitudinal connecting plate 8, and a second positioning connection hole 9-1 is provided at the position corresponding to each first positioning connection hole 8-2 on the bearing platform 9, and the first positioning connection hole 8-2 is detachably connected to the corresponding second positioning connection hole 9-1 through a pin. Figure 3 As shown, three first positioning connection holes 8-2 are arranged on the horizontal part of the longitudinal connecting plate 8 on each side, and six second positioning connection holes 9-1 are arranged on the supporting platform 9. By inserting pins into the corresponding first positioning connection holes 8-2 and the second positioning connection holes 9-1, the supporting platform 9 can be quickly assembled to the lifting module.

[0038] In the modular tool transfer trolley of the present embodiment, the bottom base trolley and the lifting device, as well as the lifting device and the carrying platform 9 are detachably connected by pins, which has high positioning accuracy, good rigidity, convenient on-site disassembly and assembly, light weight, and good adaptability; and the bottom of the lifting device is hinged to the positioning connection structure 3 of the bottom base trolley through pins, which reduces the number of connecting rods, further making the structure lightweight, and on-site construction personnel can easily carry and assemble it.

[0039] like Figure 4 As shown, when the modular tool transfer trolley of this embodiment is used in the maintenance construction of a subway tunnel, the bottom basic trolley, the lifting device and the carrying platform 9 are transported to the construction site respectively and then assembled into a whole. The self-locking screw 7 is rotated to make the two lower lateral support rods 6 at the bottom approach each other, and the angle between the first diagonal support 4 and the second diagonal support 5 increases, so that the carrying platform 9 rises. When it rises to the same height as the platform, it stops rotating and pushes the tool material onto the carrying platform 9. After the transfer is completed, the self-locking screw 7 is rotated to make the two lower lateral support rods 6 at the bottom move away from each other, and the angle between the first diagonal support 4 and the second diagonal support 5 decreases, so that the carrying platform 9 descends and stops when it reaches the lowest point. The worker pushes the whole trolley to transport it to the construction site. The same operation can realize the secondary transfer of tools.

[0040] When some construction operations will affect the tunnel structure, it is necessary to monitor the tunnel structure at the operation location in real time. The tool transfer vehicle of this embodiment can provide a prism observation point for relevant monitoring equipment during operation, such as Figure 4 As shown, measuring prisms 11 are respectively installed at the four corners of the rectangular frame 1 of the bottom base trolley, which can meet the monitoring requirements of monitoring equipment in different directions.

[0041] It should be understood that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A modular tool transfer vehicle for subway tunnel maintenance and construction, characterized in that: It includes a bottom base trolley, a lifting device and a bearing platform. The bearing platform and the top of the lifting device are detachably fixed, and the bottom of the lifting device and the middle position of the top of the bottom base trolley are detachably hinged; the four corners of the top of the bottom base trolley are provided with measuring prisms.

2. The modular tool transfer vehicle for subway tunnel maintenance construction as claimed in claim 1, characterized in that: The bottom base trolley comprises a rectangular frame and rubber wheels installed at four corners of the bottom of the rectangular frame, and the measuring prisms are installed at four corners of the top of the rectangular frame.

3. The modular tool transfer vehicle for subway tunnel maintenance construction as claimed in claim 2, characterized in that: A positioning connection structure is arranged in the middle of the top of the rectangular frame, and the bottom of the lifting device is detachably hinged to the positioning connection structure.

4. The modular tool transfer vehicle for subway tunnel maintenance construction as claimed in claim 2, characterized in that: The rectangular frame is formed by welding rectangular hollow profiles.

5. The modular tool transfer vehicle for subway tunnel maintenance construction as claimed in claim 1, characterized in that: The lifting device comprises a folding frame and a driving mechanism for driving the folding frame to unfold or fold in a vertical direction. The top of the folding frame is detachably fixed to the bearing platform, and the bottom of the folding frame is detachably hinged to the bottom base trolley.

6. The modular tool transfer vehicle for subway tunnel maintenance construction as claimed in claim 5, characterized in that: The folding frame includes two X-shaped frames arranged opposite to each other and two longitudinal connecting plates arranged opposite to each other; the two ends of the top of one of the X-shaped frames are connected to the two ends of the top of the other X-shaped frame through two upper transverse support rods, and the two ends of the bottom of one of the X-shaped frames are connected to the two ends of the bottom of the other X-shaped frame through two lower transverse support rods; the two ends of one of the upper transverse support rods are fixedly connected to the two longitudinal connecting plates, and the two ends of the other upper transverse support rod are slidably connected to the two longitudinal connecting plates.

7. The modular tool transfer vehicle for subway tunnel maintenance construction as claimed in claim 6, characterized in that: One end of the two lower transverse support rods is hinged to the bottom base trolley through two first diagonal braces, and the other end of the two lower transverse support rods is hinged to the bottom base trolley through two first diagonal braces.

8. The modular tool transfer vehicle for subway tunnel maintenance construction as claimed in claim 7, characterized in that: The driving mechanism comprises a self-locking screw, one end of which is threadedly connected to one of the lower transverse support rods, and the other end of which is rotatably connected to the other lower transverse support rod.

9. The modular tool transfer vehicle for subway tunnel maintenance construction as claimed in claim 6, characterized in that: The X-shaped frame comprises two second diagonal braces, and the middle parts of the two second diagonal braces are hinged.

10. The modular tool transfer vehicle for subway tunnel maintenance construction as claimed in claim 6, characterized in that: The longitudinal connecting plate is an L-shaped structure, the horizontal part of the longitudinal connecting plate is connected to the bearing platform by a pin, and a slide groove is provided on the vertical part of the longitudinal connecting plate, and the end of the upper transverse support rod is slidably installed in the corresponding slide groove.

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