Balanced impedance connection survey device and application method

Abstract

The invention relates to a balanced type resistance connection measuring device and an application method. Two stainless steel square tubes are welded to form a propeller strut; the stainless steel square tube cross beam and the two stainless steel square tubes are welded into a tripod shape; heavy hammers are hung at the two ends of the stainless steel square tube cross beam respectively and extend into the lower oil drum, steel wires are hung at the top ends of the two stainless steel square tube herringbone frames, and reflective stickers are pasted on the steel wires. A monofilament is used for tying a tripod, a foot sweeping frame is used for measuring and hanging two heavy hammers, the tripod is adjusted to be horizontal through a miniature carving device, the two heavy hammers can offset various forces brought by the outside in the two damping liquid oil barrels, and therefore the stabilizing effect is achieved, due to the improvement of the tool, on-site construction and operation of measuring personnel are facilitated, and the measuring precision is also improved.

Description

Technical Field

[0001] The invention belongs to the technical field of underground construction measurement such as subways, mines, deep shafts, etc., and specifically relates to a balanced impedance connection measurement device and an application method. Background Art

[0002] In underground space construction, contact measurement is often used to transmit ground coordinates and orientation to the underground as the basis for underground tunnel and structure control. At present, most people use a single steel wire and a single weight for contact measurement. During the measurement process, it is difficult to make the steel wire and the weight still due to external environments such as steel wire torque, temperature difference, and wind force, which affects the measurement accuracy and efficiency. After repeated field tests, a balanced impedance contact measurement device can easily solve the above problems. It is easy to process and economical to use. It can ensure the stability of the steel wire during field measurement and improve the measurement accuracy and efficiency. Summary of the invention

[0003] In order to overcome the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide a balanced impedance contact measurement device and an application method to solve the problems of low measurement accuracy, poor stability and low efficiency caused by the traditional single-wire single-weight contact measurement device. The traditional contact measurement device uses a single steel wire and a single weight. Due to the depth of the shaft, the torsion of the steel wire and the external environment, the weight cannot be stable for a long time; or after being temporarily stable, the steel wire will start to rotate again during the measurement due to wind and temperature changes, which directly affects the measurement accuracy and efficiency. In harsh environments, a contact measurement takes 5 to 6 hours, and the reduced efficiency directly affects the construction progress. After continuous attempts and research by on-site surveyors, a single wire is used to tie a tripod, and two weights are hung on the sweeping tripod for measurement. The tripod level is adjusted by a micro-carving device. The two weights can offset each other in the two damping liquid oil barrels. Various forces brought by the outside can achieve a stable effect. The improvement of this tooling not only facilitates the operation of on-site construction and surveying personnel, but also improves the measurement accuracy.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is: A balanced impedance connection measuring device comprises two stainless steel square tubes (1), characterized in that the two stainless steel square tubes (1) are welded to form an A-frame; the stainless steel square tube crossbeam (2) and the two stainless steel square tubes (1) are welded to form a tripod shape; a weight (4) is hung at each end of the stainless steel square tube crossbeam (2), the weight (4) extends into an oil drum (3) below, and a steel wire (5) is hung at the top end of the A-frame of the two stainless steel square tubes (1), and a reflective sticker (6) is pasted on the steel wire (5).

[0005] A weight (4) is hung at each end of the stainless steel square tube crossbeam (2), and a movable fine-adjustment device (7) is provided between them.

[0006] The movable fine-adjustment device (7) is used to adjust the tripod to a balanced state by adjusting the two fine-adjustment devices to the left and right.

[0007] The stainless steel square tube cross beam (2) has a square cross section, a 20 mm opening is cut off at the bottom, and a movable fine-tuning device (7) is installed in the opening.

[0008] The oil barrel (3) is filled with damping liquid.

[0009] A subway balanced impedance connection measuring device, characterized in that the installation and measurement of the measuring device according to any one of claims 1 to 5 are adopted, characterized in that the following steps are included: 1) Installation of the balancing device: hang the steel wire on the steel wire bracket, and connect the lower end of the steel wire to the fixed connection at the top of the herringbone; 2) Adjust the device to suspend two weights at a suitable height, and adjust the movable fine-tuning device (7) to ensure that the balancing device is in a balanced state; 3) When the balancing device is stable, place the main device (3) under the weight (4), and place the weight in two oil barrels of damping fluid to ensure that the weight does not touch the barrel bottom and the barrel wall; 4) When the balancing device is stable, measure the distance S from the reflective sticker (6) on the steel wire (5) to the instrument to obtain the direction data α of the position of the steel wire (5); 5) Replace the position of the steel wire (5) on the steel wire bracket, adjust the stability of the measuring balance device, obtain different measurement data, collect data multiple times through this device, calculate the measurement results internally, compare the accuracy and reliability of the measurement data, and obtain reliable results through final adjustment calculation.

[0010] The beneficial effects of the present invention are: The present invention is suitable for the connection measurement work in the construction fields of underground tunnels, underground mines, underground structures, etc. A single steel wire plus a tripod suspending two weights can realize fast and accurate measurement on site, which is more accurate and efficient than the traditional single wire single weight device. It not only shortens the measurement time, but also improves the connection measurement accuracy and reduces the staffing, and has extremely wide promotion value. It not only improves the measurement efficiency, but also ensures the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The overall plan view of the connection measurement of the present invention.

[0012] Figure 2 It is a schematic diagram of the front structure of the present invention.

[0013] Figure 3 It is a side structural schematic diagram of the present invention.

[0014] Figure 4 It is a schematic diagram of the stainless steel square tube crossbeam structure of the present invention.

[0015] Among them, 1 is a stainless steel square tube; 2 is a stainless steel square tube beam; 3 is an oil drum; 4 is a heavy hammer; 5 is a steel wire; 6 is a reflective sticker; and 7 is a movable fine-tuning device. DETAILED DESCRIPTION

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0017] like Figure 1 , 2 , 3, and 4, a balanced impedance connection measuring device is characterized in that: the main body (1) is two 50*50*526mm stainless steel square tubes, which are welded to form a herringbone; the main body (2) is a 50*50*1000mm stainless steel square tube crossbeam, and the bottom surface of the steel tube is processed into a 20mm hollow ( Figure 4 ), and welded with the subject (1) into a tripod shape; the main body (3) is two oil drums; the subject (4) is two 10KG weights; the subject (5) is a 0.3 steel wire, through which the ground plane coordinates and orientation are transmitted to the underground tunnel; the main body (6) is a reflective sticker, through which the horizontal distance from the instrument to the steel wire can be obtained; the main body (7) is a fine-tuning device, by adjusting the left and right fine-tuning devices, the tripod can be kept in a horizontal state to achieve the measurement purpose.

[0018] The main body (1) and the main body (2) are connected to form a tripod by welding, and a heavy hammer is suspended through the welded tripod to ensure that the measuring wire (5) does not rotate during measurement, thereby ensuring stability.

[0019] The main body (7) is a movable fine-tuning device. The tripod is placed in a balanced state by adjusting the two fine-tuning devices left and right. The two weights are simultaneously immersed in the oil barrel main body (3) to form resistance, thereby ensuring that the steel wire does not rotate during the connection measurement.

[0020] The main body (6) is a reflective sticker, which is pasted to the back and the steel wire. When measuring, the total station aims at the reflective sticker to measure the distance from the instrument to the steel wire.

[0021] The main body (2) is made of stainless steel square tube Figure 4 The model has a 20 mm opening at the bottom, ensuring that the main body (7) fine-tuning device can be adjusted left and right, and the tripod can be adjusted to a horizontal state.

[0022] A subway balanced impedance connection measuring device, characterized in that the installation and measurement of the measuring device according to any one of claims 1 to 5 are adopted, characterized in that the following steps are included: 1) Installation of the balancing device: hang the steel wire on the steel wire bracket, and connect the lower end of the steel wire to the fixed connection at the top of the herringbone; 2) Adjust the device to a suitable height to hang two weights, and adjust the main body (7) fine-tuning device to ensure that the balancing device is in a balanced state; 3) When the balancing device is stable, place the main device (3) under the weight (4), and place the weight in two oil barrels of damping fluid to ensure that the weight does not touch the barrel bottom and the barrel wall; 4) When the balancing device is stable, measure the distance S from the reflective sticker (6) on the steel wire (5) to the instrument to obtain the direction data α of the position of the steel wire (5); 5) Replace the position of the steel wire (5) on the steel wire bracket, adjust the stability of the measuring balance device, obtain different measurement data, collect data multiple times through this device, calculate the measurement results internally, compare the accuracy and reliability of the measurement data, and obtain reliable results through final adjustment calculation.

Claims

1. A balanced impedance contact measuring device, comprising two stainless steel square tubes (1), characterized in that: Two stainless steel square tubes (1) are welded to form a herringbone frame; a stainless steel square tube crossbeam (2) and the two stainless steel square tubes (1) are welded to form a tripod shape; a heavy hammer (4) is hung at each end of the stainless steel square tube crossbeam (2), and the heavy hammer (4) extends into an oil drum (3) below; a steel wire (5) is hung at the top of the herringbone frame of the two stainless steel square tubes (1), and a reflective sticker (6) is attached to the steel wire (5).

2. A balanced impedance contact measurement device according to claim 1, characterized in that: A weight (4) is hung at each end of the stainless steel square tube crossbeam (2), and a movable fine-adjustment device (7) is provided between them.

3. A balanced impedance contact measurement device according to claim 2, characterized in that: The movable fine-adjustment device (7) is used to adjust the tripod to a balanced state by adjusting the two fine-adjustment devices to the left and right.

4. A balanced impedance contact measurement device according to claim 1, characterized in that: The stainless steel square tube cross beam (2) has a square cross section, a 20 mm opening is cut off at the bottom, and a movable fine-tuning device (7) is installed in the opening.

5. A balanced impedance contact measurement device according to claim 1, characterized in that: The oil barrel (3) is filled with damping liquid.

6. A subway balanced impedance measurement device, characterized in that The implementation of the installation and measurement of the measuring device according to any one of claims 1 to 5 is characterized by comprising the following steps: 1) Installation of the balancing device: hang the steel wire on the steel wire bracket, and connect the lower end of the steel wire to the fixed connection at the top of the herringbone; 2) Adjust the device to a suitable height to hang two weights, and adjust the main body (7) fine-tuning device to ensure that the balancing device is in a balanced state; 3) When the balancing device is stable, place the main device (3) under the weight (4), and place the weight in two oil barrels of damping fluid to ensure that the weight does not touch the barrel bottom and the barrel wall; 4) When the balancing device is stable, measure the distance S from the reflective sticker (6) on the steel wire (5) to the instrument to obtain the direction data α of the position of the steel wire (5); 5) Replace the position of the steel wire (5) on the steel wire bracket, adjust the stability of the measuring balance device, obtain different measurement data, collect data multiple times through this device, calculate the measurement results internally, compare the accuracy and reliability of the measurement data, and obtain reliable results through final adjustment calculation.

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