CN209069170U - Cutter head of shield machine, tool wear measurement rotation ruler, measuring system - Google Patents

Abstract

The utility model is based on a level, and provides a shield machine cutter head cutter wear measuring rotary ruler and a measuring system, which are composed of a measuring horizontal ruler for reading and a telescopic vertical rod for adjusting the height, which can realize the adjustment of different positions on the shield cutter head. The relative height difference is accurately measured to measure the wear amount of the tool and the cutter head. The structure is simple, the measurement is accurate, the operation is easy, and the measurement efficiency is high. The overall knife height is reviewed, which is also convenient for engineers and technicians to accurately evaluate and master the tunneling efficiency of the shield machine.

Description

Shield machine cutter head, tool wear measuring rotary ruler, measuring system

technical field

The invention relates to a shield machine cutter head and a tool wear measuring device thereon, in particular to a shield machine cutter head, a cutter wear measuring rotary ruler and a measuring system.

Background technique

With the construction of subway shield tunnels in full swing, the length of subway tunnels has become larger and larger, and the frequency of shield machine maintenance and tool change has also greatly increased. Especially in the sand and gravel strata in Beijing, the cutters and spokes on the cutter head are particularly worn. After the shield is advanced for a certain distance, the spokes and knives at different positions on the cutter head will be worn out, and the cutter head will also be deformed, causing the relative height difference between the two positions on the cutter head to change, and the change in the relative height of the cutter head will affect the shield. The tunneling efficiency of the machine, in order to better determine the height difference of different positions on the cutter head after wear, calculate the wear amount of the cutter and the spoke and guide the tool change more economically, and check the overall cutter height of the cutter head after the cutter change. High precision measurement has become particularly important, but the tools that can measure the knife height in the market have large errors and low measurement efficiency. Therefore, it is particularly necessary to design a simple, easy-to-operate and effective measuring device.

SUMMARY OF THE INVENTION

In order to solve the above problems, the present invention proposes a uniquely designed rotary ruler based on a level, which can accurately measure the relative height difference between the cutter head of the shield machine and the cutters at different positions on it, so as to measure the wear of the cutter head and the cutter. It can play a guiding role in the tool change of the shield, and it is also convenient for engineers and technicians to accurately evaluate and master the tunneling efficiency of the shield.

The invention first provides a shield machine cutter head and a cutter wear measuring rotary ruler. The rotary ruler is composed of a measuring horizontal ruler for reading and a telescopic vertical rod for adjusting height. The telescopic vertical rod has a telescopic rod and a fixed rod. The telescopic rod It can telescopically slide relative to the fixed rod; the measuring bar has a connecting end and a free end, the connecting end is connected with the top end of the telescopic rod through a rotating shaft, and its free end can be used around the rotating shaft between the measuring horizontal ruler and the telescopic vertical rod. The formed plane rotates relative to the telescopic vertical rod; and an electronic compass and at least one tube level bubble are arranged on the fixed rod. The rotary ruler provided by the invention has a simple structure and is convenient to use.

The present invention secondly provides a shield machine cutter head and cutter wear measurement system, which includes the rotary ruler and a leveling platform installed on the top of the foundation pit of the maintenance well. The leveling platform is provided with a leveling device for reading the Measure the reading on the horizontal ruler. The measurement system provided by the invention has the advantages of simple structure, convenient use and accurate measurement.

Beneficial effects: The present invention proposes a uniquely designed rotary ruler based on the level gauge, which can accurately measure the relative height difference between the cutter head of the shield machine and the cutters at different positions on it, so as to measure the wear amount of the cutter head and the cutter, Simple structure, accurate measurement, easy operation and high measurement efficiency, it plays a guiding role in shield tool change, and can check the overall tool height of the cutter head after the tool change, which is also convenient for engineers and technicians to accurately evaluate and master the shield machine. excavation efficiency.

Description of drawings

Fig. 1 is the front view of the rotary ruler structure of the present invention;

Fig. 2 is the side view of the rotary ruler structure of the present invention;

3 is a schematic diagram of the measurement principle of the measurement system of the present invention;

4 is a schematic structural diagram of a leveling instrument platform of the present invention;

FIG. 5 is a schematic diagram of the leveling instrument platform level instrument of the present invention after installation and angle adjustment.

The accompanying drawings described herein are used to provide a further understanding of the present invention, and constitute a part of this application, but do not constitute a limitation to the present invention.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention more clearly understood, the embodiments of the present invention will be further described in detail below with reference to the embodiments and the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but not to limit the present invention.

In the description of the present invention, it is to be understood that the terms "comprising/comprising", "consisting of" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a product, device, A process or method includes not only those elements, but may also include other elements, if desired, not expressly listed, or elements inherent to the product, device, process, or method. Without further limitation, an element defined by the phrases "comprising/comprising", "consisting of" does not preclude the presence of additional elements in the product, device, process or method comprising said element same elements.

As shown in Figures 1-2, in a specific embodiment of the present invention, a shield machine cutter head, a cutter wear measuring rotary ruler 1, a measuring horizontal ruler 2 for reading and a telescopic vertical rod 3 for adjusting the height are proposed. In actual operation, a ruler with a length of 1m that can be read by a level can be used as a measuring horizontal ruler. A rotating shaft 4 is set at the top of the telescopic vertical rod 3, and the two can be rotated around the rotating shaft 4. This rotation is in the measurement horizontal. The plane formed by the ruler and the telescopic vertical rod rotates relative to the telescopic vertical rod, so that the angle between the measuring horizontal ruler 2 and the telescopic vertical rod 3 can be easily adjusted.

Specifically, the telescopic vertical rod 3 is a telescopic straight rod, consisting of a telescopic rod 31 and a fixed rod 32, the upper section is the telescopic rod 31, and the lower section is the fixed rod 32, and the telescopic rod can telescopically slide relative to the fixed rod; measuring the horizontal ruler 2 One end is connected with the top end of the telescopic rod 31 through the rotating shaft 4, and the other end can rotate relative to the telescopic vertical rod around the rotating shaft in the plane formed by the measuring bar and the telescopic vertical rod.

When the front shield 18 of the shield machine arrives at the maintenance shaft and stops, the cutter head surface is usually not necessarily exactly the same as the shield section, but at a certain azimuth angle. There is an electronic compass 5, which is used to measure the overall azimuth angle of the rotary ruler. During use, the azimuth of the front shield cutter head 15 of the shield machine is measured in advance. When the rotary ruler is erected, as long as the electronic compass value on the fixed rod 32 matches If the orientation of the cutter head is consistent, the measuring horizontal ruler can be guaranteed to rotate in the same vertical plane. If the value of the electronic compass is inconsistent with the cutter head orientation, the rotary ruler needs to be adjusted until its azimuth angle is consistent with that of the shield machine cutter head.

At least one tube level bubble 6 is also provided on the fixed rod 32. When the rotary ruler 1 is rotated as a whole, the telescopic vertical rod is perpendicular to the ground by adjusting the level bubble on the fixed rod 32 to make the vertical rod perpendicular to the ground, thereby ensuring that the measuring horizontal ruler is on the same horizontal plane. turn.

In the present invention, it is preferable to set two tube level bubbles 6, one of which is installed in the middle of the fixed rod, and the other is installed at the bottom end of the fixed rod. It is very high, that is, the bottom of the telescopic vertical rod 3 is very high, and it can also be easily adjusted and observed by the engineering and technical personnel to the tube level bubble.

Referring to FIG. 2 , the fixing rod 32 is provided with a screw fixing button 7 , which is usually arranged at the top end of the fixing rod 32 , and is used to fix and clamp the telescopic rod 31 at a required height position.

Referring to FIG. 1 , the fixed rod 32 has a built-in chute 8, and the telescopic rod 31 can slide in the built-in chute to realize the telescopic change in length. Specifically, in the present invention, the fixed rod 32 can adopt a cylindrical structure with a closed or semi-closed cross-section, and the chute 8 is a separate component arranged in the fixed rod 32. The built-in chute is welded with the built-in fixing reinforcement 9 and the The fixing rod 32 is connected to ensure that the sliding groove is firmly fixed and accurately positioned in the fixing rod, so that the telescopic rod 31 can slide and extend smoothly in the sliding groove.

When the shield machine stops at the maintenance shaft, its stop surface may not be a horizontal plane, but may have a certain slope, which leads to a certain pitch angle of the cutter head. In order to ensure the accuracy of the measurement, see Figure 2 , an electronic protractor 10 is further installed at the connection between the measuring horizontal ruler 2 and the telescopic vertical rod 3, which can be installed coaxially with the rotating shaft 4. The installed electronic digital protractor can accurately adjust the measuring horizontal ruler and the telescopic vertical rod. During the specific measurement, the pitch angle of the cutter head 15 when the shield machine is stopped is measured in advance, which can be measured by the shield machine PLC, and then the angle of the measuring horizontal ruler is adjusted by the electronic digital protractor until the measuring horizontal ruler is used. It is perpendicular to the surface of the cutter head and can be in close contact with the tool 16 to be measured, thereby ensuring the measurement accuracy.

Referring to accompanying drawing 2 again, at the junction of the measuring horizontal ruler 2 and the telescopic vertical rod 3, a rotating light-filling light bulb is further installed, and by erecting a light-filling light bulb that can be rotated up and down on the measuring horizontal ruler, when the light is illuminated under the foundation pit 14 of the maintenance well. When insufficient, turn on the light to fill in the light, which is convenient for the level reading.

As shown in FIG. 3, in another specific embodiment of the present invention, a shield machine cutter head and tool wear measurement system is proposed, which is used to measure the cutter head 15, the cutter head 15, The wear amount of the tool 16 includes the rotary ruler 1 and the level platform 12 installed on the top of the foundation pit 14 of the maintenance well. Specifically, it can be installed on the ring beam on the top of the retaining wall 17 around the foundation pit 14 of the maintenance well. A level 13 is set up on the platform for reading the reading on the measuring bar.

Continuing to refer to Figures 4 and 5, the level platform 12 is composed of a vertical steel plate 121 and a horizontal steel plate 122 which are vertically welded to each other. The vertical steel plate 121 is provided with at least one row of nut fixing holes 123. A nut screw 124 is drilled on the ring beam, and the nut screw 124 passes through the nut fixing hole to fix the level platform on the top of the foundation pit of the maintenance well.

Further, the front end of the horizontal steel plate 122 is a hinged and rotatable mounting plate 125, the mounting plate 125 is hingedly connected to the front end of the horizontal steel plate 122 through a hinge shaft 126 and can be rotated up and down, and the level 13 is fixed on the mounting plate 125, As shown in Figure 5, when using, first install the level and then adjust the mounting plate to a certain angle, and you can see the measuring bar for reading (Note: measuring the vertical inclination of the relative height difference level does not produce measurement errors).

The measurement principle of the shield machine cutter head and cutter wear measurement system of the present invention is as follows:

(1) Before the front shield of the shield machine arrives at the maintenance well to change the tool, use the electronic compass to measure the azimuth angle of the cutter head;

(2) Install a leveling instrument platform on the top of the foundation pit of the maintenance well, set up a leveling instrument on the leveling instrument platform, and adjust the leveling instrument to a certain angle after installation, so that it can be aligned with the reading of the measuring bar;

(3) Erect a rotary ruler at the bottom of the foundation pit of the maintenance well, adjust the height of the telescopic rod so that the measuring horizontal ruler can stick to the tool at the position to be measured, and rotate the rotary ruler horizontally to make the electronic compass orientation on the rotary ruler consistent with the cutter head orientation, and then make The tube level bubble is centered;

In the aforementioned step (1), if the stop surface of the shield machine is not horizontal when the front shield of the shield machine reaches the maintenance well and stops, the pitch angle of the cutter head when the front shield of the shield machine reaches the maintenance well and stops should be measured in advance through the shield machine PLC. ; And before or after erecting the rotary ruler, for different positions on the cutter head, pre-adjust the included angle of the measuring horizontal ruler relative to the telescopic vertical rod, so that it is consistent with the pitch angle of the cutter head.

(4) Read the height of the spokes and tools before the tool change by measuring the horizontal ruler, and compare with the original height before the shield machine is started to obtain the wear amount of the spokes and tools at different positions on the cutter head.

During the specific measurement, the linear velocity of the spokes near the fishtail knife in the center of the cutter head is very small, and the relative wear is small, which is suitable as the reference point of the entire cutter head surface, and the relative height is calculated by the reference point. Measure and record different positions on the cutter head before and after arriving at the maintenance well for tool change, such as the reading of the measuring bar of the cutter, spokes, etc., and compare the difference with the original height before the shield starts, and then the relative height difference can be obtained, that is, the cutter head is obtained. The amount of wear at different locations on the top.

After the tool change, you can further measure the data after the tool change, check the latest height difference at different positions on the cutter head, and check whether the cutter head after the tool change can achieve efficient tunneling in combination with the arrangement of different tools, which is convenient for engineers and technicians to accurately evaluate. And master the tunneling efficiency of the shield machine.

By now, those skilled in the art will recognize that, although exemplary embodiments of the present invention have been illustrated and described in detail herein, it is still possible to directly follow the present disclosure without departing from the spirit and scope of the present invention. Numerous other variations or modifications can be identified or derived consistent with the principles of the present invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (10)

1. a shield machine cutter head, tool wear measuring rotary ruler, it is characterized in that: this rotary ruler is made up of the measuring horizontal ruler of reading and the telescopic vertical rod of adjusting height, and described telescopic vertical rod has telescopic rod and fixed rod, The telescopic rod can telescopically slide relative to the fixed rod; the measuring bar has a connecting end and a free end, the connecting end is connected with the top end of the telescopic rod through a rotating shaft, and the free end can be used around the rotating shaft between the measuring beam and the telescopic rod. The vertical rod rotates relative to the telescopic vertical rod in the plane; and an electronic compass and at least one tube level bubble are arranged on the fixed rod. 2 . The rotary ruler according to claim 1 , wherein the fixing rod is provided with a screw fixing button, which is used to fix and maintain the telescopic rod at a predetermined height position. 3 . 3 . The rotary ruler according to claim 1 , wherein the fixed rod has a built-in chute, and the telescopic rod can slide in the built-in chute to realize the telescopic change of the length. 4 . 4 . The rotary ruler according to claim 3 , wherein the built-in chute is connected to the fixed rod by welding the built-in fixed reinforcing rib. 5 . 5 . The rotary ruler according to claim 1 , wherein there are two tube level bubbles, one of which is installed at the middle of the fixing rod, and the other is installed at the bottom end of the fixing rod. 6 . 6 . The rotary ruler according to claim 1 , wherein an electronic protractor is further installed at the connection between the measuring horizontal ruler and the telescopic vertical rod. 7 . 7 . The rotary ruler according to claim 1 , characterized in that: a rotating supplementary light bulb is further installed at the connection between the measuring horizontal ruler and the telescopic vertical rod. 8 . 8. A shield machine cutter head and cutter wear measurement system, characterized in that: comprising the rotary ruler as claimed in any one of claims 1-7, and a leveling platform installed on the top of the foundation pit of the maintenance well, the leveling platform The upper frame is provided with a level for reading the reading on the measuring bar. 9 . The measuring system according to claim 8 , wherein the leveling platform is composed of vertical steel plates and horizontal steel plates that are vertically welded to each other, and the vertical steel plates are provided with at least one row of nut fixing holes, nut screw rods. Fix the leveling platform on the top of the foundation pit of the maintenance well through the nut fixing hole. 10 . The measuring system according to claim 9 , wherein the front end of the horizontal steel plate is a hingedly mounted and rotatable mounting plate, and the level is fixed on the mounting plate. 11 .