CN-121990464-A - Dynamic monitoring device for component posture and position for beam field hoisting operation

CN121990464ACN 121990464 ACN121990464 ACN 121990464ACN-121990464-A

Abstract

The invention provides a component gesture and position dynamic monitoring device for beam field hoisting operation, which belongs to the technical field of precision instruments and thermal management, and comprises an invar alloy inner ring connected with an embedded steel disc in a concrete base, a brass middle ring coaxially nested on the outer surface of the invar alloy inner ring, a composite material outer ring coaxially wrapped on the outer side of the brass middle ring, a heat exchange flow channel filled with a vaporization heat conducting medium, the vaporization heat conducting medium absorbs heat and then is converted from a liquid state to a vapor state, the vaporization heat conducting medium moves from an evaporation end to a condensation end, a temperature-sensitive driving piece is connected with the condensation end of the heat exchange flow channel, the length is changed according to the temperature of the condensation end, a rotating shaft of a displacement lever is arranged on the top surface of the invar alloy inner ring, the temperature-sensitive driving piece is connected with a power arm of the displacement lever, a guide rail is arranged at the bottom side of the top of a shell platform, the end of the resistance arm of the displacement lever slides along the guide rail, and drives the shell platform to move along the vertical direction, so as to counteract thermal expansion errors. The invention realizes the ultra-high stability of the measurement standard through a multiple cooperative mechanism.

Inventors

XU XIAOLONG
LI ZHENGSHUN
WANG JIAQI
ZHANG LINYUAN
ZHU ZHIQUAN
ZHANG HUAXUN
HUANG XUREN
BAI JU
ZENG CHENG
TIAN PEIYAO
KE MEIHUA
Ren Pingang

Assignees

中铁七局集团武汉工程有限公司

Dates

Publication Date: 20260508
Application Date: 20260309

Claims (10)

1. The component gesture and position dynamic monitoring device for beam field hoisting operation is characterized by comprising an invar alloy inner ring (10), wherein the invar alloy inner ring (10) is connected with an embedded steel disc in a concrete base (70); a brass middle ring (20), the brass middle ring (20) being coaxially nested to the outer surface of the invar inner ring (10); a composite outer ring (30), wherein the composite outer ring (30) is coaxially coated on the outer side of the brass middle ring (20); The evaporation end of the heat exchange flow channel (40) is covered on the outer surface of the composite material outer ring (30), the heat exchange flow channel (40) is filled with a vaporization heat conduction medium, and the vaporization heat conduction medium is converted from a liquid state to a vapor state after absorbing heat and moves from the evaporation end to a condensation end; one end of the temperature-sensitive driving piece (50) is connected with the condensation end of the heat exchange flow channel (40), and the length of the temperature-sensitive driving piece (50) is changed according to the temperature of the condensation end; The rotating shaft of the displacement lever (13) is arranged on the top surface of the invar alloy inner ring (10), and the temperature-sensitive driving piece (50) is connected with a power arm of the displacement lever (13); The shell platform (60), the top downside of shell platform (60) is provided with guide rail (61), resistance arm tip of displacement lever (13) is followed guide rail (61) is slided, drives shell platform (60) are along vertical direction removal, offset thermal expansion error.
2. The device for dynamically monitoring the posture and the position of a component for beam field hoisting operation according to claim 1, wherein the composite outer ring (30) comprises a carbon fiber layer (31) and an alloy wire mesh (32), and the alloy wire mesh (32) is arranged in the carbon fiber layer (31).
3. The device for dynamically monitoring the posture and the position of a component for beam field hoisting operation according to claim 2, wherein the alloy wire mesh (32) is provided with a plurality of subareas, each subarea is independently connected with an electrode, and the subareas exceeding a preset temperature limit threshold value are electrified by the electrode to cause the subareas to perform austenitic phase transformation.
4. A dynamic monitoring device for the attitude and position of a component for beam farm hoisting operation according to claim 1, wherein the heat exchange flow channel (40) is tree-shaped.
5. The device for dynamically monitoring the posture and the position of a component for beam field hoisting operation according to claim 1, wherein the vaporized heat conducting medium (41) is a gallium indium tin eutectic alloy working medium.
6. The device for dynamically monitoring the posture and the position of a component for beam field hoisting operation according to claim 1, wherein the temperature-sensitive driving piece (50) is a nickel-titanium-copper alloy phase-change elastic piece.
7. The device for dynamically monitoring the posture and the position of a component for beam field hoisting operation according to claim 6, wherein the copper content in the nickel-titanium-copper alloy phase-change elastic sheet is 12-15wt%.
8. The device for dynamically monitoring the posture and the position of a component for beam field hoisting operation according to claim 1, wherein a microcolumn (43) is arranged on the surface of an inner cavity of the heat exchange flow channel (40), a heat conducting substrate (42) is arranged on the outer wall of the heat exchange flow channel (40), one end of the microcolumn (43) is arranged in the heat exchange flow channel (40), the other end of the microcolumn (43) is connected with the heat conducting substrate (42), and the vaporized heat conducting medium (41) is driven to flow back from a condensation section to an evaporation section through capillary pressure generated in the heat exchange flow channel (40).
9. The device for dynamically monitoring the posture and the position of a component for beam field hoisting operation according to claim 1, wherein the surface of the brass middle ring (20) is provided with radial expansion joints (21).
10. A dynamic monitoring device for the attitude and position of a component for beam field hoisting operation according to claim 1, wherein the length of a power arm in the displacement lever (13) is smaller than the length of a resistance arm.

Description

Dynamic monitoring device for component posture and position for beam field hoisting operation Technical Field The invention relates to the technical field of precision instruments and thermal management, in particular to a dynamic monitoring device for the posture and the position of a component for beam field hoisting operation. Background In large civil engineering, especially in the construction of precast beam fields of highways and railway bridges, the hoisting operation precision of components (such as box beams) is directly related to the safety and quality of the whole structure. In order to realize the butt joint installation of millimeter level and even sub-millimeter level, the gesture and the position of the component are required to be dynamically monitored by adopting precision measurement equipment such as a total station, a laser tracker and the like. The accuracy of these measuring instruments depends on the spatial stability of their mounting references, i.e. the platform of the monitoring device. However, the beam field environment is usually in an open air or semi-open air working condition, and factors such as solar radiation, periodic fluctuation of ambient temperature, heat dissipation of electromechanical equipment in the field and the like can form a complex and non-uniform temperature field in the monitoring device and a supporting structure thereof, so that non-uniform temperature rise of a mounting reference surface (such as a total station base) of the monitoring system under sunlight can generate micro deformation, and measurement reference drift is caused. To cope with the thermal deformation problem, the prior art generally adopts two conventional schemes, namely, one of which is to choose a low expansion alloy (such as invar alloy) to manufacture the whole monitoring platform. The scheme can inhibit deformation to a certain extent, but the material cost is extremely high, the mechanical performance is insufficient, and the structural bearing requirement under a large hoisting scene is difficult to meet. Secondly, a common steel structure is adopted to be matched with a constant temperature environment control system. The scheme has the advantages that huge construction and operation costs of an air conditioning system are required, the energy consumption is remarkable, and the problems of gradient temperature fields and non-uniform thermal deformation caused by local and transient heat sources (such as unilateral sunlight and short heat dissipation of equipment) cannot be solved. The fundamental limitation is that the above schemes belong to passive thermal management strategies, can not sense and actively compensate the changing thermal load, and can not counteract the deformation trend determined by the inherent characteristics of the thermal expansion coefficient of the material. Therefore, how to break through the thinking limitation of the traditional passive thermal management, design a dynamic monitoring device capable of self-adapting to complex temperature environment and intelligently compensating non-uniform thermal deformation and simultaneously achieving excellent structural bearing capacity and reasonable cost has become a core technical problem to be solved in the field. Disclosure of Invention The invention aims to provide a component gesture and position dynamic monitoring device for beam field hoisting operation, which can solve the technical problem that the prior art cannot simultaneously inhibit uniform and non-uniform thermal deformation in an open complex thermal environment, and realizes the transition of a measurement reference from passive thermal deformation to active maintenance stability. The embodiment of the invention is realized by the following technical scheme that the dynamic monitoring device for the attitude and the position of the component for beam field hoisting operation comprises an invar alloy inner ring, wherein the invar alloy inner ring is connected with an embedded steel disc in a concrete base; a brass middle ring coaxially nested to the outer surface of the invar inner ring; The composite outer ring is coaxially coated on the outer side of the brass middle ring; The evaporation end of the heat exchange flow channel is covered on the outer surface of the composite material outer ring, the heat exchange flow channel is filled with a vaporization heat conducting medium, the vaporization heat conducting medium is converted from a liquid state to a vapor state after absorbing heat, and the vaporization heat conducting medium moves from the evaporation end to the condensation end; one end of the temperature-sensitive driving piece is connected with the condensation end of the heat exchange flow channel, and the length of the temperature-sensitive driving piece is changed according to the temperature of the condensation end; the rotating shaft of the displacement lever is arranged on the top surface of the invar alloy inner ring, an