阅读说明：本技术 盾构隧道钢环安装自动钻孔机及方法 (Automatic drilling machine and method for shield tunnel steel ring installation ) 是由 赵文亮 荀伟卓 杨朋 牛永波 王倩云 于 2021-06-03 设计创作，主要内容包括：本发明涉及一种盾构隧道钢环安装自动钻孔机及方法,该自动钻孔机包括电磁底座、固定支座、电锤,所述电磁底座上面通过钢制圆柱固定连接固定支座,所述固定支座内装有直线电机,所述钢制圆柱上滑动连接位于固定支座下方的移动支座,所述移动支座能沿钢制圆柱上下自有滑动,所述直线电机的推杆连接移动支座,所述移动支座一侧面上安装有电锤。本发明适用于曲面钢内衬环打植筋孔,可大幅度降低劳动强度,也适用于其他类似工况的开孔施工。(The invention relates to an automatic drilling machine and a method for mounting a steel ring of a shield tunnel, wherein the automatic drilling machine comprises an electromagnetic base, a fixed support and an electric hammer, the fixed support is fixedly connected to the upper surface of the electromagnetic base through a steel cylinder, a linear motor is arranged in the fixed support, the steel cylinder is slidably connected with a movable support positioned below the fixed support, the movable support can slide up and down along the steel cylinder, a push rod of the linear motor is connected with the movable support, and the electric hammer is mounted on one side surface of the movable support. The invention is suitable for drilling the bar planting holes on the curved steel lining ring, can greatly reduce the labor intensity, and is also suitable for the hole drilling construction under other similar working conditions.)

1. The utility model provides a shield tunnel steel ring installation automatic drilling machine, includes electromagnetic base, fixing support, electric hammer, its characterized in that: the electromagnetic base is fixedly connected with a fixed support through a steel cylinder, a linear motor is arranged in the fixed support, a movable support is arranged below the fixed support and is connected with the steel cylinder in a sliding manner, the movable support can slide up and down along the steel cylinder, a push rod of the linear motor is connected with the movable support, and an electric hammer is arranged on one side face of the movable support.

2. The automatic drilling machine for shield tunnel steel ring installation according to claim 1, characterized in that: and a damping spring is connected between the fixed support and the movable support.

3. The automatic drilling machine for shield tunnel steel ring installation according to claim 1, characterized in that: the movable support is connected with an electric hammer through a fixed hoop.

4. The automatic drilling machine for shield tunnel steel ring installation according to claim 1, characterized in that: the maximum propelling force of the linear motor is 3000N, the propelling speed is 10mm/s, and the stroke is 250 mm.

5. The automatic drilling machine for shield tunnel steel ring installation according to claim 1, characterized in that: the electromagnetic base adopts an arc-shaped bottom surface, and the arc-shaped bottom surface can be completely attached to the duct piece; a hole with the diameter of 30mm is reserved in the electromagnetic base, and cross centering is arranged, so that the base can be conveniently positioned and a drill bit can conveniently pass through the hole.

6. The automatic drilling machine for shield tunnel steel ring installation according to claim 1, characterized in that: the electromagnetic base is 5000N in adsorption capacity after being electrified.

7. The automatic drilling machine for shield tunnel steel ring installation according to claim 1, characterized in that: the steel cylinder is provided with an up-down movable limit, the stroke of the sliding support is limited to 0-250mm, and the punching depth can be effectively controlled.

8. A construction method for installing an automatic drilling machine by adopting a shield tunnel steel ring is characterized by comprising the following steps:

(1) after the steel plate is in place, aligning the cross centering standard of the hole site of the electromagnetic base with a reserved hole of the steel plate, and electrifying and fixing;

(2) fixing the electric hammer on a fixed hoop of the sliding support, and checking the working condition of the movable support;

(3) starting an electric hammer switch, starting a linear motor after the electric hammer works stably, and completing automatic drilling operation by utilizing the thrust of the linear motor and the impact of the electric hammer;

(4) after the electric hammer drills to a preset depth, the linear motor retraction switch is started, the electric hammer switch is closed after the drill bit is completely pulled out, and finally the electromagnetic base switch is closed and the automatic drilling machine is taken down.

Technical Field

The invention relates to a device for automatically drilling a curved steel lining ring of a tunnel, which is particularly suitable for the situation that a steel pipe piece is fixed and holes need to be formed on a concrete pipe piece in the construction of a steel ring of an operation shield tunnel.

Background

Along with the extension of the subway operation time, the deformation degree of the subway tunnel tends to be serious, and the requirement of the shield tunnel steel ring renovation construction is gradually increased.

According to statistics, the daily average passenger capacity of the Shanghai subway in 2020 is 774.51 ten thousands of times, and the total passenger capacity reaches 28.34 hundred million times. The demand of urban population to underground rail transit is constantly increasing nowadays, for better service trip personnel, subway operation time constantly prolongs. And the corresponding maintenance construction time of the operation subway is continuously compressed. In order to better adapt to the operation of subways, all the working procedures in construction need to be optimized so as to finish all the working procedures within limited construction time.

When fixing bolt was planted in maintenance subway shield tunnel steel ring renovation construction at present, ordinary electric hammer manpower trompil was adopted in the trompil, and the trompil is efficient, and it is relatively poor to last working capacity, often leads to fixing bolt to plant the progress and can't reach established requirement. Along with the continuous extension of subway line operating time, the engineering time constantly reduces, needs a more stable, efficient concrete trompil device.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides an automatic drilling machine and method for mounting a steel ring of a shield tunnel.

In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a shield tunnel steel ring installation automatic drilling machine, includes electromagnetism base, fixing support, electric hammer, pass through steel cylinder fixed connection fixing support above the electromagnetism base, linear electric motor is equipped with in the fixing support, sliding connection is located the removal support of fixing support below on the steel cylinder, it can follow the steel cylinder and slide from top to bottom to remove the support, linear electric motor's push rod is connected and is removed the support, remove and install the electric hammer on the support side.

Furthermore, a damping spring is connected between the fixed support and the movable support.

Furthermore, the movable support is connected with an electric hammer through a fixed hoop.

Further, the maximum propelling force of the linear motor is 3000N, the propelling speed is 10mm/s, and the stroke is 250 mm.

Furthermore, the electromagnetic base adopts an arc-shaped bottom surface which can be completely attached to the duct piece; a hole with the diameter of 30mm is reserved in the electromagnetic base, and cross centering is arranged, so that the base can be conveniently positioned and a drill bit can conveniently pass through the hole.

Furthermore, the electromagnetic base has an adsorption force of 5000N after being electrified.

Furthermore, the steel cylinder is provided with an up-and-down movable limit, the stroke of the sliding support is limited to 0-250mm, and the punching depth can be effectively controlled.

A construction method for installing an automatic drilling machine by adopting a shield tunnel steel ring comprises the following steps:

(1) after the steel plate is in place, aligning the cross centering standard of the hole site of the electromagnetic base with a reserved hole of the steel plate, and electrifying and fixing;

(2) fixing the electric hammer on a fixed hoop of the sliding support, and checking the working condition of the movable support;

(3) starting an electric hammer switch, starting a linear motor after the electric hammer works stably, and completing automatic drilling operation by utilizing the thrust of the linear motor and the impact of the electric hammer;

(4) after the electric hammer drills to a preset depth, the linear motor retraction switch is started, the electric hammer switch is closed after the drill bit is completely pulled out, and finally the electromagnetic base switch is closed and the automatic drilling machine is taken down.

The invention has the beneficial effects that:

the tapping device of the present invention: the electromagnetic base is used for positioning and fixing, and the automatic drilling is completed by utilizing the propelling force of the electric hammer and the linear motor.

The invention adopts a split structure, controls the weight of a single body to be about 10Kg, firstly positions and then fixes the electric hammer to punch, and realizes the automatic punching of the 360-degree intrados.

The invention is characterized in that the positioning is completed by mechanical equipment, and compared with manual construction, the stability is better, and the construction progress and quality are greatly improved.

Drawings

Fig. 1 is a structural sectional view of an automatic shield tunnel steel ring installation drilling machine of the present invention.

Detailed Description

Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

a. As shown in figure 1, the automatic drilling device for the curved steel lining ring of the tunnel is an assembly system, and all parts are effectively connected and work together to complete automatic drilling operation.

b. The electromagnetic base 1 of the device has the adsorption force of 5000N after being electrified.

c. Fixing support 2 is fixed on steel cylinder 8, and both ends are fixed, and linear electric motor base and linear electric motor 4 are installed on fixing support 2.

d. The movable support 3 is arranged on the steel cylinder 8, the movable support 3 can slide up and down along the steel cylinder 8, and the head end of the linear motor 4 and the damping spring 6 are connected with the fixed support 2.

e. The maximum propelling force of the linear motor 4 is 3000N, the propelling speed is 10mm/s, and the stroke is 250 mm.

f. The electric hammer 5 uses a Xilei TE50 type impact drill and is fixed by two ferrules 7 at the side of the movable support 3.

g. The electromagnetic base 1 adopts an arc bottom surface (the diameter is 5.5m), and can be completely attached to a duct piece; a hole with the diameter of 30mm is reserved in the electromagnetic base 1, and cross centering is arranged, so that the electromagnetic base 1 can be conveniently positioned and a drill bit can conveniently pass through.

h. The recoil that punches is greater than 5000N, is provided by the electro-magnet, and propulsive force 3000N is provided by linear electric motor 4, ensures the impact force demand within the 20 joule ranges.

i. The steel cylinder 8 is provided with a movable limit to limit the stroke (0-250mm) of the sliding support 3, and the punching depth can be effectively controlled.

The application method of the embodiment of the invention is as follows:

a. and (4) repairing the steel ring of the shield tunnel, aligning the cross centering standard of the hole site of the electromagnetic base of the device with the preformed hole of the steel plate after the steel plate is in place, and electrifying and fixing.

b. And fixing the electric hammer on the sliding support hoop, and checking the working condition of the movable support.

c. The electric hammer switch is started firstly, after the electric hammer works stably, the linear motor is started, and automatic drilling operation is completed by utilizing the thrust of the linear motor and the impact of the electric hammer.

d. After the drill bit is drilled to a preset depth, a linear motor retraction switch is started, an electric hammer switch is turned off after the drill bit is completely pulled out, and finally an electromagnetic base switch is turned off and the automatic drilling machine is taken down.