Safety supporting device for tunnel construction

Abstract

The utility model discloses a safety supporting device for tunnel construction and relates to the field of tunnel construction equipment. The supporting device is mainly designed for solving the problem that an existing supporting device loses the protection function once being damaged. Moving wheels are arranged at the bottom of the base, a sleeve rod is arranged at the top of the base, an embedded rod is arranged in the sleeve rod, clamping grooves are vertically formed in the inner wall of the sleeve rod, arc-shaped clamping block mounting grooves are vertically formed in the embedded rod, arc-shaped clamping blocks are arranged in the arc-shaped clamping block mounting grooves, and springs are arranged between the arc-shaped clamping blocks and the bottoms of the arc-shaped clamping block mounting grooves. The straight plate is fixed to the top of the embedded rod, and the arc-shaped top is fixed to the straight plate. The inner arc-shaped plate is connected with the arc-shaped top and the straight plate through the connecting column. A sleeve is arranged in the middle of the lower surface of the straight plate, an output shaft of a motor fixed to the middle of the straight plate extends out of the sleeve and is connected with a driving screw, the lower portion of the driving screw is in threaded connection with a nut, the nut is fixed to a supporting frame, and the supporting frame is fixed to the top of the base. The utility model has the advantage that the arc-shaped top can be continuously used after being damaged.

Description

Technical field:

[0001] The utility model relates to the field of tunnel construction equipment, in particular to a safety supporting device for tunnel construction. Background technology:

[0002] With the continuous development of society and the continuous improvement of economic level, people pay more attention to the development of municipal transportation, so more and more subway tunnels are developed and constructed. In the process of tunnel construction, various dangers are often faced, among which the problems caused by support are the most serious, so more and more support devices are used, and most of the existing support devices are single-layer structures, which lose their protective function once damaged, and require a large number of people to operate both moving and fixing. Therefore, a safe support device for tunnel construction is proposed. Summary of the invention:

[0003] The technical problem to be solved by the utility model is to provide a safety support device for tunnel construction which has good stability, can improve support strength, and is convenient to move and fix.

[0004] The purpose of the utility model is achieved as follows: it includes a base, a moving wheel is installed at the bottom of the base, two grooves with openings facing upward are arranged on the base, holes are arranged at the bottom of the two grooves, a fixing piece is arranged in each groove, the fixing piece includes a fixing rod, a limiting ring is fixed in the middle of the fixing rod, the diameter of the limiting ring is larger than the aperture of the hole at the bottom of the groove, the lower end of the fixing rod is conical, the fixing rod located below the limiting ring extends from the hole at the bottom of the groove and then is embedded in the soil to complete the fixing of the base. A top plate is fixed on the top of the fixing rod, and the specifications and dimensions of the top plate are adapted to the specifications and dimensions of the groove.

[0005] An upwardly extending sleeve rod is fixed on both sides of the top of the base, and an embedded rod is slidably arranged in each sleeve rod. A number of vertically arranged card grooves are correspondingly provided on both sides of the inner wall of the sleeve rod, and a number of vertically arranged arc-shaped card block mounting grooves are correspondingly provided on the two side surfaces of the embedded rod. An arc-shaped card block is provided in each arc-shaped card block mounting groove, and the arc-shaped surface of the arc-shaped card block faces the sleeve rod. A spring is connected between the arc-shaped card block and the bottom of the arc-shaped card block mounting groove, and the arc-shaped card block is placed in the corresponding card groove in the sleeve rod.

[0006] The straight plate is fixed on the top of the two embedded rods, and the two ends of the arc-shaped top are fixed on the straight plate; an inner arc-shaped plate is arranged between the straight plate and the arc-shaped top, and the inner arc-shaped plate is connected with the arc-shaped top and the straight plate through a connecting column.

[0007] A sleeve is fixed in the middle of the lower surface of the straight plate, a motor is fixed in the middle of the straight plate, the motor output shaft extends from the sleeve, a driving screw is connected to the motor output shaft, an annular support plate is fixed on the top of the driving screw, a plurality of balls are clamped on the upper surface of the support plate near the outer edge, the balls are arranged in a ring, and the support plate is in contact with the sleeve.

[0008] The lower part of the driving screw rod is threadedly connected with a nut, the nut is fixed on the support frame, and the support frame is fixed on the top of the base.

[0009] The beneficial effects of the utility model are:

[0010] The device is more convenient to move by arranging moving wheels at the bottom of the base. At the same time, the fixing parts are inserted into the fixing grooves so that the fixing parts can be fixed by pressing down and embedding into the soil, which improves the stability of the device. In addition, two layers of protection, an inner arc plate and an arc top, are arranged on the top of the straight plate to improve the strength of the support. Even if the arc top is damaged, it can continue to be used without replacement, which improves the practicality of the device. The stability of the device can be ensured by arranging blocks and slots on the sleeve rod and the embedded rod. Description of the drawings:

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 It is a schematic diagram of the assembly relationship between the sleeve rod and the embedded rod in the utility model;

[0013] Figure 3 It is a schematic diagram of the top view structure of the support plate in the utility model. Specific implementation method:

[0014] Combine the following Figure 1-3 Further explain the utility model;

[0015] It includes a base 1, a moving wheel 2 is installed at the bottom of the base, two grooves 3 with openings facing upward are arranged on the base, holes are arranged at the bottom of the two grooves, and a fixing piece is arranged in each groove, and the fixing piece includes a fixing rod 4, a limiting ring 5 is fixed in the middle of the fixing rod, the diameter of the limiting ring is larger than the aperture of the hole at the bottom of the groove, the lower end of the fixing rod is conical, and the fixing rod located below the limiting ring extends from the hole at the bottom of the groove and then is embedded in the soil to complete the fixation of the base. Since the diameter of the limiting ring is larger than the aperture of the hole, the embedding depth of the fixing rod can be ensured. A top plate 6 is fixed on the top of the fixing rod, and the specifications and dimensions of the top plate are adapted to those of the groove. When the limiting ring is placed at the bottom of the groove, the upper surface of the top plate and the upper surface of the base are on the same plane, and the fixing piece will not affect the construction on the base after being fixed.

[0016] On both sides of the top of the base, there are respectively fixed upwardly extending sleeve rods 7, and an embedded rod 8 is slidably arranged in each sleeve rod. A number of slots arranged up and down are correspondingly provided on both sides of the inner wall of the sleeve rod, and a number of arc-shaped card block mounting grooves arranged up and down are correspondingly provided on the two side surfaces of the embedded rod. An arc-shaped card block 9 is provided in each arc-shaped card block mounting groove, and the arc surface of the arc-shaped card block faces the sleeve rod. A spring 10 is connected between the arc-shaped card block and the groove bottom of the arc-shaped card block mounting groove. When the spring is under stress, the arc-shaped card block can be received in the arc-shaped card block mounting groove. When the spring is in a normal state, the arc-shaped card block is exposed from the arc-shaped card block mounting groove; the arc-shaped card block is placed in the slot in the corresponding sleeve rod.

[0017] The straight plate 11 is fixed on the top of the two embedded rods, and the two ends of the arc top 12 are fixed on the straight plate; an inner arc plate 13 is arranged between the straight plate and the arc top, and the inner arc plate is connected to the arc top and the straight plate through a connecting column 14.

[0018] A sleeve 15 is fixed in the middle of the lower surface of the straight plate, a motor 16 is fixed in the middle of the straight plate, the motor output shaft extends from the sleeve, a driving screw 17 is connected to the motor output shaft, an annular support plate 18 is fixed on the top of the driving screw, a plurality of balls 19 are clamped on the upper surface of the support plate near the outer edge, the balls are arranged in a ring, and the support plate is in contact with the sleeve.

[0019] The lower part of the driving screw is threadedly connected with a nut 20, which is fixed on a support frame 21, and the support frame is fixed on the top of the base. The motor drives the driving screw to rotate inside the nut, which can lift the position of the straight plate, thereby driving the embedded rods on both sides to extend, and achieves a high degree of fixation through the arc-shaped clamping block and the clamping groove, thereby improving the reliability of the structure. Since the upper surface of the support plate is provided with a ball bearing, the friction between the support plate and the sleeve can be reduced when the support plate rotates.

[0020] Working principle and usage process: First, move the device to the position where it needs to be used by moving wheels. After moving, start the motor to make the drive rod rotate in the nut, thereby starting to rise, pushing the straight plate upward, so that the arc top rises synchronously, supporting the top of the tunnel, and finally hammering the fixing part downward so that the bottom end of the fixing part is embedded in the soil to complete the fixation.

[0021] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety support device for tunnel construction, comprising a base (1), a movable wheel (2) being mounted on the bottom of the base, wherein: Both sides of the top of the base are respectively fixed with sleeve rods (7) extending upwards, and an embedded rod (8) is slidably arranged in each sleeve rod, and a plurality of vertically arranged card grooves are correspondingly arranged on both sides of the inner wall of the sleeve rod, and a plurality of vertically arranged arc-shaped card block installation grooves are correspondingly arranged on the two side surfaces of the embedded rod, and an arc-shaped card block (9) is arranged in each arc-shaped card block installation groove, and the arc surface of the arc-shaped card block faces the sleeve rod, and a spring (10) is connected between the arc-shaped card block and the groove bottom of the arc-shaped card block installation groove, and the arc-shaped card block is placed in the corresponding card groove in the sleeve rod; The straight plate (11) is fixed on the top of the two embedded rods, and the two ends of the arc-shaped top (12) are fixed on the straight plate; an inner arc-shaped plate (13) is arranged between the straight plate and the arc-shaped top, and the inner arc-shaped plate is connected to the arc-shaped top and the straight plate through a connecting column (14); A sleeve (15) is fixed in the middle of the lower surface of the straight plate, a motor (16) is fixed in the middle of the straight plate, an output shaft of the motor extends out of the sleeve, a driving screw (17) is connected to the motor output shaft, a nut (20) is threadedly connected to the lower part of the driving screw, the nut is fixed on a support frame (21), and the support frame is fixed on the top of the base.

2. The safety support device for tunnel construction according to claim 1 is characterized in that: An annular support plate (18) is fixed on the top of the driving screw rod, and a plurality of balls (19) are clamped on the upper surface of the support plate near the outer edge. The balls are arranged in an annular shape, and the support plate is in contact with the sleeve.

3. The safety support device for tunnel construction according to claim 1 or 2, characterized in that: The base is provided with two grooves (3) with openings facing upwards, the bottoms of the two grooves are provided with holes, each groove is provided with a fixing member, the fixing member comprises a fixing rod (4), a limiting ring (5) is fixed in the middle of the fixing rod, the diameter of the limiting ring is larger than the hole diameter of the bottom hole of the groove, the lower end of the fixing rod is conical, and a top plate (6) is fixed on the top of the fixing rod, and the specification and size of the top plate are adapted to the specification and size of the groove.

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