Tunnel arc-shaped portal frame type secondary lining trolley formwork cleaning and spraying machine

Abstract

The utility model belongs to the field of secondary lining trolleys, particularly relates to a tunnel arc-shaped portal frame type secondary lining trolley template cleaning and spraying machine, and provides the following scheme aiming at the problems that an existing traditional secondary lining trolley template cleaning operation is low in cleaning efficiency, a fixed scraper structure cannot adapt to a tunnel arc-shaped outline, dust pollution is serious, and demolding oil coating is uneven. Comprising a trolley body and a cleaning spraying machine arc-shaped portal frame, the trolley body and the cleaning spraying machine arc-shaped portal frame are used in a matched mode, a tunnel forming outline is arranged on the inner wall of the trolley body, and a plurality of secondary lining trolley formwork bodies are fixedly connected to the inner wall of the trolley body. The door frame type formwork grinding and cleaning spraying machine is mainly used for grinding and polishing the surface of a secondary lining trolley formwork body after a secondary lining trolley lining is demoulded, and concrete left on the surface of the formwork is rapidly removed. And mold oil is sprayed on the surface of the mold plate through a mold oil atomizing and spraying device integrated on the mold plate.

Description

Technical Field

[0001] This utility model relates to the field of secondary lining trolley technology, and in particular to a tunnel arc-shaped gantry type secondary lining trolley template cleaning and spraying machine. Background Technology

[0002] In the field of tunnel lining construction, there are significant technical bottlenecks in the traditional secondary lining trolley formwork cleaning operation:

[0003] Low cleaning efficiency: Manual hammering or simple mechanical cleaning methods are insufficient to quickly remove solidified concrete from the formwork surface, and a single operation takes more than 4 hours, which seriously affects the construction progress;

[0004] Cleaning up dead corners and residues: The fixed scraper structure cannot adapt to the curved contour of the tunnel, and the thickness of residual concrete at the template joints can reach 3-5mm, resulting in honeycomb pitting on the surface of the secondary lining.

[0005] Severe dust pollution: Dry cleaning operations generate a large amount of inhalable particulate matter, with PM10 concentrations on site exceeding the standard by more than 8 times, seriously threatening the respiratory health of workers.

[0006] Uneven application of release oil: Manual brushing results in missed areas and drips, with the thickness of the oil film on the template surface varying by more than 40%, directly affecting the quality of concrete demolding. Utility Model Content

[0007] The purpose of this utility model is to solve the problems of low cleaning efficiency in traditional secondary lining trolley formwork cleaning operations: manual hammering or simple mechanical cleaning methods are difficult to quickly remove solidified concrete from the formwork surface, and a single operation takes more than 4 hours, which seriously affects the construction progress; dead corners are left behind: the fixed scraper structure cannot adapt to the curved contour of the tunnel, and the thickness of residual concrete at the formwork joints can reach 3-5mm, resulting in honeycomb pitting on the secondary lining surface; serious dust pollution: dry cleaning operations generate a large amount of inhalable particulate matter, and the PM10 concentration on site exceeds the standard by more than 8 times, which seriously threatens the respiratory health of workers; uneven application of release oil: manual brushing methods have the problems of missed coating and dripping, and the thickness difference of the oil film on the formwork surface exceeds 40%, which directly affects the quality of concrete demolding. Therefore, a tunnel curved gantry type secondary lining trolley formwork cleaning spraying machine is proposed.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A tunnel arc-shaped gantry type secondary lining trolley template cleaning and spraying machine includes a trolley body and an arc-shaped gantry of the cleaning and spraying machine. The trolley body is used in conjunction with the arc-shaped gantry of the cleaning and spraying machine. The inner wall of the trolley body is provided with a tunnel forming contour. Multiple secondary lining trolley template bodies are fixedly connected to the inner wall of the trolley body. The secondary lining trolley template bodies are used in conjunction with the tunnel forming contour.

[0010] The inner wall of the arc-shaped gantry of the cleaning and spraying machine is fixedly connected with multiple release oil atomizing nozzles, and the inner wall of the arc-shaped gantry of the cleaning and spraying machine is fixedly connected with multiple grinding steel wire roller assemblies.

[0011] In one possible design, the grinding wire roller assembly includes two symmetrically arranged side support plates, both of which are fixedly connected to the inner wall of the arc-shaped gantry of the cleaning spraying machine by screws.

[0012] In one possible design, the two side support plates are rotatably connected by the same threaded rod, one end of which rotatably extends through to one end of the side support plate. A wire brush roller body is fixedly sleeved on the inner wall of the threaded rod. A drive motor is fixedly connected to one side of one of the side support plates. The output shaft of the drive motor is fixedly connected to one end of the wire brush roller body and is used to drive the wire brush roller body to rotate. A limiting nut is fixedly sleeved on the inner wall of the threaded rod. One side of the limiting nut abuts against one side of the side support plate and is used to fix the threaded rod.

[0013] In one possible design, the same grinding roller cover is fixedly connected between the two side support plates, and a vacuum cleaner pipe interface is fixedly installed at the top center of the grinding roller cover.

[0014] In one possible design, multiple arc-shaped gantry support wheels are fixedly installed on both sides of the arc-shaped gantry of the cleaning spraying machine.

[0015] In one possible design, the bottom of the arc-shaped gantry of the cleaning spraying machine is fixedly equipped with arc-shaped gantry wheels.

[0016] In this application, after the secondary lining trolley is demolded, preparations are made for the template grinding and cleaning.

[0017] After the cleaning and spraying machine has traveled to the rear of the secondary lining trolley, and the gantry has been locked, the grinding wire roller assembly should be started in advance.

[0018] The secondary lining trolley is operated to continuously move backward 12 meters to achieve grinding and polishing of the template surface.

[0019] While the template is being sanded, the spray system is activated to simultaneously spray and apply release oil.

[0020] The trolley is then moved forward to the next lining station for formwork erection and pouring.

[0021] Beneficial effects:

[0022] The main function of the gantry-type formwork grinding, cleaning and spraying machine is to grind and polish the main surface of the formwork of the secondary lining trolley after demolding, and to quickly remove the residual concrete on the formwork surface.

[0023] Furthermore, by integrating a release oil atomizing spray device, release oil is sprayed onto the template surface to achieve the purpose of rapid reuse.

[0024] The cleaning and spraying machine needs to perform grinding and cleaning in the narrow space formed after the template on the trolley is demolded, so the electromechanical and hydraulic system needs to be designed to be compact and integrated.

[0025] The cleaning and spraying machine is designed with two rows of lightweight arc-shaped box girder gantry frames. Multiple grinding steel wire roller assemblies are arranged along the arc on each row of gantry frames. The front and rear rows are staggered to achieve rapid grinding and cleaning of the template surface without dead angles.

[0026] The cleaning and spraying machine integrates a release oil spraying system: it includes multiple spray nozzles designed under the arc-shaped box beam, and an integrated spray pump fixed above the gantry, which sprays release oil evenly onto the surface of the polished template immediately.

[0027] The dust collector is integrated into the cleaning spraying machine: a vacuum cleaner pipe interface is reserved above each grinding roller cover, and each interface is connected to the dust collection device through each pipe. The dust collection device is integrated into the top of the gantry to achieve centralized discharge of powder and dust, reducing harm to personnel's health.

[0028] The cleaning and spraying machine always follows behind the secondary lining trolley. It is equipped with traveling wheels and wall support wheels and can be driven longitudinally independently.

[0029] The cleaning and spraying machine adopts electromechanical integrated control and is operated by remote control. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the main structure of a tunnel arc-shaped gantry type secondary lining trolley template cleaning and spraying machine proposed in this utility model;

[0031] Figure 2 This is the first longitudinal arrangement diagram of the cleaning and spraying machine in the tunnel arc-shaped gantry type secondary lining trolley template cleaning and spraying machine proposed in this utility model;

[0032] Figure 3 This is a second longitudinal arrangement diagram of the cleaning and spraying machine in a tunnel arc-shaped gantry type secondary lining trolley template cleaning and spraying machine proposed in this utility model;

[0033] Figure 4 This is a schematic diagram of the main structure of the grinding wire roller assembly in a tunnel arc-shaped gantry type secondary lining trolley template cleaning and spraying machine proposed in this utility model.

[0034] In the diagram: 1. Curved gantry traveling wheel; 2. Curved gantry wall support wheel; 3. Tunnel forming outline; 4. Secondary lining trolley template body; 5. Release oil atomizing nozzle; 6. Grinding wire roller assembly; 7. Cleaning spraying machine curved gantry; 8. Trolley body; 9. Drive motor; 10. Side support plate; 11. Vacuum cleaner pipe interface; 12. Limit nut; 13. Wire brush roller body; 14. Grinding roller guard. Detailed Implementation

[0035] 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.

[0036] Example 1; Refer to Figure 1-4 This embodiment provides a tunnel arc-shaped gantry type secondary lining trolley template cleaning and spraying machine, the specific structure and operation method of which are as follows:

[0037] The inner wall of the trolley body 8 is set with a tunnel forming contour 3. Multiple secondary lining trolley template bodies 4 are arranged circumferentially along the tunnel forming contour 3. The arc-shaped gantry 7 of the cleaning and spraying machine achieves longitudinal movement and lateral positioning through arc-shaped gantry traveling wheels 1 and arc-shaped gantry wall-supporting wheels 2. The arc-shaped gantry is made of Q355B steel bent and formed, with the curvature tolerance controlled within ±2mm, forming a dynamic adaptation relationship with the tunnel forming contour 3. Two rows of staggered grinding steel wire roller assemblies 6 are set on the inner side of the arc-shaped gantry. Each row contains six independent drive units, and the axis misalignment distance between the front and rear rows of rollers is 150mm to ensure coverage of the template joint area.

[0038] The grinding wire roller assembly 6 is connected to the arc-shaped gantry via a side support plate 10. The side support plate 10 has a strip-shaped mounting hole, which, in conjunction with the limit nut 12, allows for axial position adjustment of the threaded rod. The main body 13 of the wire brush roller is woven from 65Mn spring steel wire with a diameter of 1.2mm and a bristle density of 4000 strands / square decimeter. The drive motor 9 drives the threaded rod to rotate via a planetary reducer, with the speed infinitely adjustable within the range of 800-1200 r / min. A torque sensor is also included for overload protection. The grinding roller cover 14 is made of 1.5mm thick stainless steel sheet, and the vacuum cleaner pipe interface 11 is located at the center of the top of the cover. It connects to the pulse dust collector at the top of the gantry via a DN50 hose. The dust collector is equipped with a 0.6MPa compressed air backflushing system, extending the filter replacement cycle to 500 hours.

[0039] Five release oil atomizing nozzles are arranged along the axis of the arc-shaped gantry at 150mm intervals. The nozzle angle is adjustable within ±15°. A 0.3MPa constant pressure spray pump and a 200L oil storage tank are also included. The spray system piping is made of 304 stainless steel, and an electromagnetic flowmeter is used to control the oil film thickness from 0.08 to 0.12mm. An integrated electrical control cabinet is located on top of the gantry, housing a Siemens S7-1200 PLC controller, enabling remote parameter setting via a 4G module. The remote control uses an industrial-grade handheld terminal equipped with an emergency stop button and a three-axis joystick, providing a control radius of up to 100 meters.

[0040] During operation, the cleaning and spraying machine travels to the rear of the secondary lining trolley, achieving a positioning accuracy of ±0.5mm via a hydraulic locking device. After starting the grinding wire roller assembly 6, the trolley continuously reverses at a speed of 0.5m / min, with the roller linear speed and trolley speed forming a 1:12 transmission ratio. The synchronously activated spraying system forms a 0.1mm homogeneous oil film on the template surface, shortening the curing cycle by 40% compared to traditional methods. The dust removal system captures over 98% of dust particles in real time, controlling the PM10 concentration in the work area to within 3mg / m³. 3 The following measures were taken: The single 12-meter operation achieved a formwork cleaning efficiency of 280 square meters per hour, with residual concrete thickness controlled within 0.5mm, and the formwork reuse rate increased to more than 15 times.

[0041] When the equipment is moved, the curved gantry follows the trolley at a speed of 3 km / h via an independent drive system, with the wall-supporting wheels maintaining a constant 5 mm gap with the tunnel sidewall. The entire system is designed with IP65 protection level, adaptable to working environments from -20℃ to 50℃, and is equipped with a fault self-diagnosis function that can monitor 12 key parameters in real time.

[0042] However, as is well known to those skilled in the art, the working principle and wiring method of the pulse dust collector and the drive motor 9 are commonplace. The pulse dust collector model is Donalds Torit DFO-4-48 pulse dust collector. These are all conventional methods or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A tunnel arc-shaped gantry type secondary lining trolley template cleaning and spraying machine, characterized in that, include: The trolley body (8) and the arc-shaped gantry (7) of the cleaning and spraying machine cooperate with each other. The outer wall of the trolley body (8) is provided with a tunnel forming outline (3). Multiple secondary lining trolley templates (4) are arranged around the tunnel forming outline (3). Two rows of grinding steel wire roller assemblies (6) are arranged in an alternating manner on the inner side of the arc-shaped gantry (7) of the cleaning and spraying machine. The arc-shaped gantry (7) of the cleaning and spraying machine integrates a release oil atomizing nozzle (5).

2. The tunnel arc-shaped gantry type secondary lining trolley template cleaning and spraying machine according to claim 1, characterized in that, The grinding wire roller assembly (6) includes two symmetrically arranged side support plates (10). Both side support plates (10) are fixedly connected to the inner wall of the arc-shaped gantry (7) of the cleaning spraying machine by screws. Each row of the grinding wire roller assembly (6) contains six independent drive units, and the axes of the front and rear rollers are staggered.

3. The tunnel arc-shaped gantry type secondary lining trolley template cleaning and spraying machine according to claim 2, characterized in that, The two side support plates (10) are rotatably connected by the same threaded rod. One end of the threaded rod rotatably passes through to one end of the side support plate (10). The inner wall of the threaded rod is fixedly fitted with a wire brush roller body (13). One side of one of the side support plates (10) is fixedly connected to a drive motor (9). The output shaft of the drive motor (9) is fixedly connected to one end of the wire brush roller body (13) and is used to drive the wire brush roller body (13) to rotate. The inner wall of the threaded rod is fixedly fitted with a limiting nut (12). One side of the limiting nut (12) abuts against one side of the side support plate (10) and is used to fix the threaded rod.

4. The tunnel arc-shaped gantry type secondary lining trolley template cleaning and spraying machine according to claim 2, characterized in that, The two side support plates (10) are fixedly connected to the same grinding roller cover (14). The top of the grinding roller cover (14) is provided with a vacuum cleaner pipe interface (11), which is connected to the pulse dust collector on the top of the gantry through a DN50 hose.

5. The tunnel arc-shaped gantry type secondary lining trolley template cleaning and spraying machine according to claim 1, characterized in that, Multiple arc-shaped gantry support wheels (2) are fixedly installed on both sides of the arc-shaped gantry (7) of the cleaning and spraying machine.

6. The tunnel arc-shaped gantry type secondary lining trolley template cleaning and spraying machine according to claim 1, characterized in that, The bottom of the arc-shaped gantry (7) of the cleaning and spraying machine is fixedly equipped with arc-shaped gantry wheels (1).

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