Special overhead working truck for tunnel

Abstract

The utility model discloses a special overhead working truck for a tunnel, which comprises a walking truck body, a lifting stand column is fixedly arranged on a loading platform of the walking truck body through a rotating disc, and the rotating disc rotates through a stepping motor fixed on the loading platform. A main working platform arranged in the horizontal direction is fixedly arranged on the lifting stand column, telescopic platforms are arranged at the left end and the right end of the main working platform in a sliding mode, and a step ladder is hinged to the lower end face of the suspended end of each telescopic platform. The angle between the step ladder and the telescopic platform is changed through an air cylinder hinged to the lower end face of the main working platform. According to the device, through extension of the telescopic platform on the main working platform, an operation platform during operation is enlarged, and the time for moving the auxiliary working platform due to accurate positioning of an operation site is effectively saved; according to the device, the foldable step ladder is arranged on the telescopic platform, so that the flexibility of the operation platform is realized.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction equipment technology, specifically to a tunnel-specific aerial work platform. Background Technology

[0002] When performing high-altitude operations, cranes are needed to lift personnel and required materials to designated work positions. However, cranes are ineffective in high-altitude operations in places with limited vertical space, such as tunnels.

[0003] Based on this, many aerial work platforms specifically designed for tunnels have emerged on the market. For example, patent number CN220336905U, named a dual-purpose tunnel engineering vehicle for repair and inspection, discloses an engineering vehicle with liftable guardrails. Although it can be raised and lowered according to the tunnel location to be worked on, the guardrails on this type of work vehicle can only rotate within a certain range because the top of the tunnel has an arched structure. When working on the lower part of the arched top of the tunnel, i.e., the part with a wider lateral distance, there will be certain difficulties and a lot of time will be required. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a tunnel-specific aerial work platform.

[0005] According to the technical solution provided in the embodiments of this application, a tunnel-specific aerial work platform includes a traveling vehicle body. A lifting column is fixedly mounted on the loading platform of the traveling vehicle body via a rotating disk. The rotating disk is rotated by a stepper motor fixed on the loading platform. A main working platform is fixedly mounted on the lifting column in a horizontal direction. Telescopic platforms are slidably mounted on the left and right ends of the main working platform. A step ladder is hinged to the lower end face of the suspended end of the telescopic platform. The step ladder achieves the angle change between itself and the telescopic platform through a cylinder hinged to the lower end face of the main working platform.

[0006] Furthermore, the rotary disk includes a base and a turntable body. The base is fixed on the loading platform, and the turntable body is rotatably connected to the base via an annular slide rail. A stepper motor moves through the base and is fixedly connected to the turntable body.

[0007] Furthermore, the lifting column includes a lifting column and a drive cylinder. The lifting column includes a first lifting column, a second lifting column, and a third lifting column. The first lifting column is fitted inside the second lifting column, and the second lifting column is slidably connected to the first lifting column via a vertical slide rail. The third lifting column is fitted inside the second lifting column, and the third lifting column is slidably connected to the second lifting column via a vertical slide rail. The piston rod of the drive cylinder is fixedly connected to the top surface of the third lifting column, so that the lifting column can be raised and lowered under the action of the drive cylinder.

[0008] Furthermore, the main working platform has internal cavities at both ends, and slide rails are provided on the side end faces of the internal cavities. The telescopic platform is slidably connected to the main working platform through the slide rails. The telescopic platform extends and retracts from the main working platform through a double-headed, double-outlet cylinder fixed inside the main working platform.

[0009] Furthermore, the staircase is equipped with a telescopic rod that is perpendicular to the staircase, and a suction cup is fixed to the suspended end of the telescopic rod to improve the safety of the staircase.

[0010] Furthermore, the suction cup is a vacuum suction cup, which provides a better fastening effect and makes it more convenient to use.

[0011] In summary, the beneficial effects of this application are as follows: the extension of the telescopic platform on the main working platform increases the operating platform during operation, effectively saving time spent moving the auxiliary working platform to accurately locate the work site; the device is equipped with a foldable ladder on the telescopic platform to achieve flexibility of the operating platform; and the installation of a fixed suction cup on the ladder allows the ladder to be fixed to the tunnel wall during operation, improving the safety of the working platform. Attached Figure Description

[0012] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0013] Figure 1 This is a schematic diagram of the overall structure of the device in this application;

[0014] Figure 2 This is a schematic diagram of the structure of the device in operation according to this application;

[0015] Figure 3 This is an exploded view of the rotating disk of the device in this application;

[0016] Figure 4 This is a cross-sectional structural schematic diagram of the lifting column of the device in this application;

[0017] Figure 5 This is a cross-sectional view showing the connection between the main working platform and the telescopic platform of the device in this application.

[0018] Numbering in the diagram: Walking vehicle body-1; Loading platform-11; Rotary disc-2; Base-21; Turntable body-22; Lifting column-3; Lifting column-31; First lifting column-311; Second lifting column-312; Third lifting column-313; Drive cylinder-32; Main working platform-4; Inner cavity-41; Telescopic platform-5; Step ladder-6; Cylinder-7; Telescopic rod-8. Detailed Implementation

[0019] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] A tunnel-specific aerial work platform vehicle, such as Figure 1 and Figure 2 As shown, a lifting column 3 is fixedly mounted on the loading platform 11 of the vehicle body 1 via a rotating disk 2. The rotating disk 2 is rotated by a stepper motor fixed on the loading platform 11.

[0022] like Figure 3 As shown, the rotating disk 2 includes a base 21 and a turntable body 22. The base 21 is fixed on the loading platform 11, and the turntable body 22 is rotatably connected to the base 21 through an annular slide rail. A stepper motor moves through the base 21 and is fixedly connected to the turntable body 22.

[0023] The lower end face of the rotary disk 2 is fixedly connected to the loading platform 11, and the upper end face is fixedly connected to the lifting column 3; therefore, when the rotary disk body 22 rotates, the lifting column 3 on the upper end face of the rotary disk body 22 rotates at the same time.

[0024] like Figure 4 As shown, the lifting column 3 includes a lifting column 31 and a drive cylinder 32. The lifting column 31 includes a first lifting column 311, a second lifting column 312, and a third lifting column 313. The first lifting column 311 is fitted inside the second lifting column 312, and the second lifting column 312 is slidably connected to the first lifting column 311 via a vertical slide rail. The third lifting column 313 is fitted inside the second lifting column 312, and the third lifting column 313 is slidably connected to the second lifting column 312 via a vertical slide rail. The piston rod of the drive cylinder 32 is fixedly connected to the top surface of the third lifting column 312. A slider that cooperates with the vertical slide rail is provided at the bottom end of the outer end face of the second lifting column 312 and the third lifting column 313; thus realizing the lifting of the lifting column 3.

[0025] like Figure 1 and Figure 2 As shown, a horizontally positioned main working platform 4 is fixedly installed on the upper end face of the lifting column 3.

[0026] like Figure 5As shown, the main working platform 4 has an inner cavity 41 at both ends, and a slide rail is provided on the side end face of the inner cavity 41. The telescopic platform 5 is slidably connected to the main working platform 4 through the slide rail. The telescopic platform 5 extends and retracts from the main working platform 4 through a double-headed double-outlet cylinder fixed inside the main working platform 4. The double-headed double-outlet cylinder is a double-headed double-outlet multi-stage cylinder, which occupies little space and has a long stroke. By setting the double-headed double-outlet multi-stage cylinder, efficient telescopic extension is achieved.

[0027] like Figure 2 As shown, a step ladder 6 is hinged to the lower end face of the telescopic platform 5 at one of its suspended ends, while a cylinder 7 is hinged to the lower end face of the main working platform 4 near the telescopic platform 5. The piston rod of the cylinder 7 is hinged to one end of the step ladder 6, thereby realizing the angle change between the step ladder 6 and the telescopic platform 5, which facilitates the folding of the step ladder 6.

[0028] like Figure 2 As shown, the step ladder 6 is provided with a telescopic rod 7 that is perpendicular to the step ladder 6. A fixed suction cup is fixed to the suspended end of the telescopic rod 7, which is a vacuum suction cup.

[0029] Before use, start the traveling vehicle 1 to position the lifting column 3 near the location where the work needs to be done inside the tunnel. Then, start the drive motor 32 to raise the lifting column 3 to a position approximately the same height as the work location. Next, based on the work location, start the stepper motor on the loading platform 11 to rotate the lifting column 3, causing the main working platform 4 to rotate until it reaches the work location. If the length of the main working platform 4 is insufficient, the telescopic platform 5 can be extended from the main working platform 4 using a double-headed, double-outlet cylinder. Then, start the cylinder 7 to lower the ladder 6 to a suitable angle, allowing the operator to stand on the ladder 6 to work.

[0030] During operation, in order to improve the safety of operators, the telescopic rod 8 installed on the ladder 6 can be extended until the end of the telescopic rod 8 abuts against the inner wall of the tunnel. At this time, the vacuum suction cup is activated to firmly fix the end of the telescopic rod 8 to the inner wall of the tunnel. In this way, the ladder 6 and the inner wall of the tunnel form a fence to prevent operators from falling and causing danger, thus improving the safety performance of high-altitude operations.

[0031] The above description is merely a preferred embodiment of this application and an explanation of the technical principles and solutions employed. Furthermore, the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A tunnel dedicated aerial work vehicle, comprising a walking vehicle body (1), characterized in that: a lifting column (3) is fixedly arranged on a loading platform (11) of the walking vehicle body (1) through a rotary disc (2), the rotary disc (2) is rotated through a stepping motor fixed on the loading platform (11), a main working platform (4) arranged in a horizontal direction is fixedly arranged on the lifting column (3), sliding telescopic platforms (5) are arranged at left and right end portions of the main working platform (4), a step ladder (6) is hingedly arranged on a lower end surface of a suspended end of the telescopic platform (5), and the step ladder (6) is connected to the telescopic platform (5) through a cylinder (7) hingedly arranged on a lower end surface of the main working platform (4) to change an angle between the step ladder (6) and the telescopic platform (5).

2. The tunnel-specific aerial work vehicle of claim 1, wherein: The rotary disc (2) comprises a base (21) and a rotary disc body (22), the base (21) is fixed on the loading platform (11), and the rotary disc body (22) is rotatably connected to the base (21) through an annular slide rail, and the stepping motor is fixedly connected to the rotary disc body (22) through the base (21).

3. The tunnel-specific aerial work vehicle of claim 1, wherein: The lifting column (3) comprises a lifting column (31) and a driving cylinder (32), the lifting column (31) comprises a first lifting column (311), a second lifting column (312) and a third lifting column (313), the first lifting column (311) is sleeved in the second lifting column (312), the second lifting column (312) is slidably connected to the first lifting column (311) through a vertical slide rail, the third lifting column (313) is sleeved in the second lifting column (312), and the third lifting column (313) is slidably connected to the second lifting column (312) through a vertical slide rail, and a piston rod of the driving cylinder (32) is fixedly connected to a top end surface of the third lifting column (313).

4. The tunnel-specific aerial lift of claim 1, wherein: Both end portions of the main working platform (4) are provided with inner cavities (41), side end surfaces of the inner cavities (41) are provided with slide rails, the telescopic platforms (5) are slidably connected to the main working platform (4) through the slide rails, and the telescopic platforms (5) are extended and retracted from and into the main working platform (4) through a double-head double-outlet cylinder fixed in the main working platform (4).

5. The tunnel-specific aerial lift of claim 1, wherein: The step ladder (6) is provided with a telescopic rod (8) arranged perpendicularly to the step ladder (6), and a fixed suction disc is fixedly arranged on a suspended end of the telescopic rod (8).

6. The tunnel-specific aerial work vehicle of claim 5, wherein: The fixed suction disc is a vacuum suction disc.

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