Portable scaffold for subway tunnel construction

Abstract

The utility model discloses a portable scaffold for subway tunnel construction, which relates to the technical field of underground engineering protection and comprises a frame body located between a shield segment and a track, the frame body is provided with transverse wheels used for moving on the shield segment, and the bottom of the frame body is provided with vertical wheels used for moving on the track. The frame body is provided with at least two vacuum suction cups used for sucking shield segments, and a brake assembly used for fixing the vertical wheels is arranged at the bottom of the frame body. The device has the beneficial effects that by arranging the wedge blocks and the brake rods, the vertical wheels can be fixed, the stability of the device is improved, the frame body is prevented from shaking during construction of workers, springs on the side faces of the brake rods enable the ends of the brake rods to make contact with the wedge blocks all the time, the wedge blocks are controlled to move up and down in cooperation with the cross rods, and the workers can conveniently press and loosen brake pads at any time; the working efficiency is improved. And by arranging the vacuum suction cups, suction force is generated on the shield segment, so that the device body is prevented from rolling over, and the safety of workers is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to underground engineering protection technical field, especially light portable scaffold for subway tunnel construction. BACKGROUND

[0002] In the subway tunnel construction, the movable scaffold is a commonly used device, which provides a high-altitude work platform for the narrow tunnel environment through its light and flexible moving characteristics, can guarantee the safety of workers, and can realize continuous construction of multiple processes. Shield segment is the main assembly component of shield construction, which is the innermost barrier of tunnel structure, is prefabricated by high-strength impermeable concrete, forms a stable pressure-bearing system through high-precision assembly, directly resists external soil pressure, groundwater seepage and special load, and has reliable bearing capacity and waterproof performance.

[0003] The scaffold in the prior art ignores the safety of the device itself for the purpose of achieving light use, resulting in poor overall anti-rollover performance of the device, which is prone to rollover. Secondly, the fixing mode of the wheels at the bottom of the scaffold is simple, and the stability is insufficient, which is prone to shaking during construction, causing hidden dangers to the safety of construction personnel. SUMMARY

[0004] This part aims to provide a light portable scaffold for subway tunnel construction, which can improve the stability of the scaffold and prevent rollover.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: a light portable scaffold for subway tunnel construction, comprising a frame body located between a shield segment and a track, the frame body is provided with horizontal wheels for moving on the shield segment, the bottom of the frame body is provided with vertical wheels for moving on the track, the frame body is provided with at least two vacuum cups for sucking the shield segment, and the bottom of the frame body is provided with a brake assembly for fixing the vertical wheels.

[0006] As a preferred scheme of the light portable scaffold for subway tunnel construction of the utility model, the brake assembly comprises a brake lever hinged to the frame body, one end of the brake lever is provided with a brake pad, and the brake pad can contact the side surface of the vertical wheel.

[0007] As a preferred scheme of the light portable scaffold for subway tunnel construction of the utility model, one end of the brake lever is provided with a wedge, the bottom of the wedge is fixedly connected with an extension rod, the top of the wedge is hingedly connected with a connecting rod and a horizontal rod in sequence, the horizontal rod is hingedly connected with a supporting rod, the supporting rod is fixedly connected with the frame body, and the side surface of the brake lever is provided with a spring for pulling the brake lever to move towards the wedge.

[0008] As the utility model discloses a light type scaffold for subway tunnel construction, which comprises a frame body, a plurality of supporting rods are fixedly connected to the frame body, and a plurality of horizontal rods are fixedly connected to the supporting rods.

[0009] As the utility model discloses a light type scaffold for subway tunnel construction, which comprises a frame body, a plurality of supporting rods are fixedly connected to the frame body, and a plurality of horizontal rods are fixedly connected to the supporting rods.

[0010] As the utility model discloses a light type scaffold for subway tunnel construction, which comprises a frame body, a plurality of supporting rods are fixedly connected to the frame body, and a plurality of horizontal rods are fixedly connected to the supporting rods.

[0011] As the utility model discloses a light type scaffold for subway tunnel construction, which comprises a frame body, a plurality of supporting rods are fixedly connected to the frame body, and a plurality of horizontal rods are fixedly connected to the supporting rods.

[0012] As the utility model discloses a light type scaffold for subway tunnel construction, which comprises a frame body, a plurality of supporting rods are fixedly connected to the frame body, and a plurality of horizontal rods are fixedly connected to the supporting rods.

[0013] The utility model discloses a beneficial effect:

[0014] 1. By setting wedge and brake lever, can fix vertical wheel, promote device stability, avoid when the worker constructs and the frame body shakes, the spring of brake lever side makes the end of brake lever always with wedge contact, cooperation horizontal rod controls the up and down movement of wedge, and the worker is convenient for pressing and loosening brake pad at any time, promotes work efficiency.

[0015] 2. By setting vacuum chuck, the suction of shield segment is generated, thereby avoiding the device body to turn on one side, guaranteeing the safety of workers, setting telescopic ladder is convenient for storage, and the portability of the device is improved. ACCURACY

[0016] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced to the drawing needed to be used in the embodiment description, the drawing in the following description is only some embodiments of the utility model, and for the ordinary skilled in the art, on the premise of not paying the creativity, labor, still can obtain other drawings according to these drawings. Wherein:

[0017] Figure 1 It is the whole structure schematic diagram of the utility model;

[0018] Figure 2 It is the telescopic ladder storage state schematic diagram of the utility model;

[0019] Figure 3 It is the brake assembly enlarged schematic diagram of the utility model;

[0020] Figure 4 The natural state schematic view of the brake lever of the utility model.

[0021] Reference signs: 1, frame body; 2, transverse wheel; 3, vertical wheel; 4, vacuum chuck; 501, brake lever; 502, brake pad; 503, wedge block; 504, telescopic rod; 505, connecting rod; 506, cross bar; 507, support rod; 508, spring; 509, circular ring; 510, pin; 6, telescopic ladder; 7, support disc; 8, fence. DETAILED DESCRIPTION

[0022] In order to make the above objectives, features and advantages of the utility model more apparent and easily understood, the specific embodiments of the utility model will be described in detail below with reference to the accompanying drawings of the specification.

[0023] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the utility model, but the utility model can also be implemented in other ways different from the description, and the "embodiments" referred to herein can include specific features, structures or characteristics that can be included in at least one implementation of the utility model.

[0024] EMBODIMENT

[0025] Reference Figure 1 - Figure 4 The embodiment provides a light type scaffold for subway tunnel construction, and specifically comprises a frame body 1 located between a shield segment and a track, the frame body 1 is provided with transverse wheels 2 for moving on the shield segment, the bottom of the frame body 1 is provided with vertical wheels 3 for moving on the track, the frame body 1 is provided with at least two vacuum chucks 4 for sucking the shield segment, and the frame body 1 is provided with a brake assembly for fixing the vertical wheels 3.

[0026] The transverse wheels 2 are brake wheels and are fixedly connected with the frame body 1, the vertical wheels 3 are fixedly connected with the bottom of the frame body 1 and are in contact with the track. When in use, the transverse wheels 2 move along the inner wall of the tunnel, and the vertical wheels 3 move on a single track. The brake assembly is located above the vertical wheels 3 and is fixedly connected with the frame body 1.

[0027] The brake assembly comprises a brake lever 501 hinged to the frame body 1, and a brake pad 502 arranged at one end of the brake lever 501 and capable of contacting the side surface of the vertical wheel 3. The brake lever 501 is provided with a wedge block 503 at one end, and the bottom of the wedge block 503 is fixedly connected with an extension rod 504. The top of the wedge block 503 is hingedly connected with a connecting rod 505 and a cross rod 506 in sequence, and the cross rod 506 is hingedly connected with a supporting rod 507 fixedly connected with the frame body 1. The side surface of the brake lever 501 is provided with a spring 508 for pulling the brake lever 501 to move towards the wedge block 503. The side surface of the supporting rod 507 is fixedly connected with a circular ring 509 provided with a plurality of through holes, and the cross rod 506 is provided with through holes of the same size in correspondence, and the through holes are provided with a pin 510.

[0028] The frame body 1 is fixedly connected with a U-shaped rod, the middle part of the brake lever 501 is hinged to the U-shaped rod, the end of the brake lever 501 in contact with the wedge block 503 is arc-shaped, the bottom of the extension rod 504 is fixedly connected with the frame body 1, and the top of the wedge block 503, the connecting rod 505 and the cross rod 506 form a linkage mechanism. The cross rod 506 rotates around the hinge of the supporting rod 507, thereby driving the wedge block 503 to move in the vertical direction. The pin 510 is inserted into different through hole combinations to realize the switching and fixing of the height gear of the wedge block 503. In use, the handle end of the cross rod 506 is pressed downward, and the wedge block 503 is lifted upward under the action of the linkage mechanism, thereby driving the brake lever 501 to rotate around the hinge of the U-shaped rod, promoting the bottom brake pad 502 to press the side surface of the vertical wheel 3. At this time, the spring 508 is in a stretched state, and the corresponding through holes of the cross rod 506 and the circular ring 509 are aligned, and the pin 510 is inserted to fix the vertical wheel 3. When the brake pad 502 needs to be released, the pin 510 is pulled out, the handle end of the cross rod 506 is lifted upward, the wedge block 503 is lowered, and the brake lever 501 rotates under the action of the spring 508. The end thereof always moves towards the wedge block 503 under the action of the spring 508, thereby releasing the brake pad 502.

[0029] The frame body 1 is provided with a telescopic ladder 6, and the bottom of the telescopic ladder 6 is provided with a supporting disc 7. The top of the frame body 1 is provided with a fence 8. The frame body 1 comprises a top platform and a connecting frame fixedly connected and having an obtuse angle. A diagonal brace is fixedly connected between the top platform and the connecting frame.

[0030] The telescopic ladder 6 is located below the top platform and is fixedly connected with the bottom of the top platform. In use, the telescopic ladder 6 is pulled out, the corresponding bolts on the telescopic ladder 6 are loosened, the position of the supporting disc 7 is adjusted to be in contact with the ground, and then the bolts are tightened to fix the ladder. The entrance position of the fence 8 is provided with a single lever capable of being opened and closed to facilitate personnel to enter and exit.

[0031] It is important to note that while only a few embodiments have been described herein, persons having ordinary skill in the art will readily devise many modifications of the embodiments disclosed without departing from the scope of the subject matter described in this application, e.g., variations in sizes, structures, shapes, and proportions of the various elements, values of the materials, temperatures, pressures, mounting arrangements, uses of materials, colors, orientations, number of pieces, etc.; and when actual data are depicted it will be evident that such data are of a exemplary nature, and that other values and materials can be employed, and other modifications, both to logic and physics, can be made without departing from the scope of the present inventive concepts set forth in the specification.

Claims

1. A lightweight scaffolding for subway tunnel construction, characterized in that, The system includes a frame (1) located between the tunnel segment and the track. The frame (1) is equipped with transverse wheels (2) for moving on the tunnel segment. The bottom of the frame (1) is equipped with vertical wheels (3) for moving on the track. The frame (1) is equipped with at least two vacuum suction cups (4) for holding the tunnel segment. The bottom of the frame (1) is equipped with a brake assembly for fixing the vertical wheels (3).

2. The lightweight scaffolding for subway tunnel construction as described in claim 1, characterized in that, The braking assembly includes a brake rod (501) hinged to the frame (1), and a brake pad (502) is provided at one end of the brake rod (501). The brake pad (502) can contact the side of the vertical wheel (3).

3. The lightweight scaffolding for subway tunnel construction as described in claim 2, characterized in that, A wedge (503) is provided at one end of the brake lever (501). A telescopic rod (504) is fixedly connected to the bottom of the wedge (503). A connecting rod (505) and a crossbar (506) are sequentially hinged to the top of the wedge (503). A support rod (507) is hinged to the crossbar (506). The support rod (507) is fixedly connected to the frame (1). A spring (508) is provided on the side of the brake lever (501) for pulling the brake lever (501) toward the wedge (503).

4. The lightweight scaffolding for subway tunnel construction as described in claim 3, characterized in that, The support rod (507) is fixedly connected to a ring (509) on its side. The ring (509) has several through holes. The crossbar (506) has corresponding through holes of the same size. A pin (510) is installed in the through hole.

5. The lightweight scaffolding for subway tunnel construction as described in claim 1, characterized in that, The frame (1) is equipped with a telescopic ladder (6), and a support plate (7) is provided at the bottom of the telescopic ladder (6).

6. The lightweight scaffolding for subway tunnel construction as described in claim 1, characterized in that, The top of the frame (1) is equipped with a fence (8).

7. The lightweight scaffolding for subway tunnel construction as described in claim 1, characterized in that, The frame (1) includes a top platform and a connecting frame that are fixedly connected at an obtuse angle.

8. The lightweight scaffolding for subway tunnel construction as described in claim 7, characterized in that, The top platform and the connecting frame are fixedly connected by diagonal braces.

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