71 results about "Thermal displacement" patented technology

The invention relates to the technical field of industrial control, in particular to an error compensation method for numerical control machining of an automobile stamping die, which comprises the following steps of: acquiring temperature of a plurality of thermo-sensitive points of a numerical control machine tool and thermal displacement data of a tool nose; the effective thermal driving potential is calculated by considering the time lag effect of the temperature level and the historical temperature change; calculating a thermal phase direction gradient in combination with the temperature difference value and the nonlinear gain; combining the effective thermal driving potential and the thermal phase direction gradient into a feature vector to train a support vector regression model; and inputting the feature vector in real time to obtain a compensation value, and superposing the compensation value to the coordinate instruction by dynamic origin offset. The method can accurately reflect the thermal inertia, capture the dynamic evolution of the thermal state, comprehensively represent the thermal state to improve the adaptability of the model, and correct the thermal error in real time, thereby improving the machining precision and surface quality of the automobile stamping die.

The invention relates to the technical field of fusion reactors, and particularly discloses a fusion reactor engineering pipeline positioning compensation device. The device comprises a rack, a positioning mechanism and a first guide rail. An assembly space is defined by the machine frame and used for containing a pipeline. The positioning mechanism comprises a driving part and an abutting part, the driving part is installed on the rack and can drive the abutting part to apply radial pressure to the pipeline, and accurate positioning of the pipeline is achieved; the first guide rail is installed on the engineering support and extends in the axial direction of the pipeline, and the rack is in sliding fit with the first guide rail, so that the whole device can move in the axial direction of the pipeline. By means of the structure, accurate positioning of the pipeline in the radial direction and thermal displacement compensation of the pipeline in the axial direction can be achieved at the same time, the problems of stress and displacement caused by thermal expansion and cold contraction and vibration of the pipeline in a fusion reactor are effectively solved, and the device has the advantages of being high in positioning accuracy, good in compensation capacity and high in reliability.

The invention belongs to the technical field of numerical control machine tools, and relates to a thermal error compensation method and system for a large bridge type gantry machining center, and the system comprises a comprehensive data collection module, a key point determination module, a thermal error modeling module, a compensation execution module and a compensation optimization module. The comprehensive data acquisition module is used for synchronously acquiring three-way thermal displacement change data of a tool nose point and key point temperature data; the key point determination module is used for screening a representative key point temperature set required by modeling according to correlation and a classification principle; the thermal error modeling module is used for establishing a temperature difference-based multiple linear regression compensation model by taking a reference temperature as a reference; the compensation execution module is used for converting the compensation model into a real-time PLC program, and calculating and outputting a compensation amount to a servo system; and the compensation optimization module iteratively adjusts the compensation correction coefficient K through a dichotomy method, and verifies and optimizes the compensation effect. The problems that an existing thermal error compensation method is single in compensation object, difficult to debug and difficult to apply in an engineering mode can be effectively solved.

The invention discloses a numerical control machine tool workbench thermal displacement correction method and structure, a reading head assembly is fixed on a machine tool body, a measuring scale assembly is fixed on a workbench, the reading head assembly and the measuring scale assembly are located on the same straight line, the axis of a main shaft and the reading head assembly are located in the same plane, and the plane is perpendicular to the moving direction of the workbench. The screw rod generates heat to generate thermal displacement, the coordinates of the workbench integrally deviate, and the measuring scale assembly automatically aligns the originally set coordinates after detecting the deviation of the coordinates, so that the thermal displacement generated by the screw rod is corrected; when the working table deforms, the measuring scale assembly deforms together, the coordinate position of the working table is corrected through the measuring scale assembly, the position of the reading head assembly relative to the machine tool spindle in the moving direction of the working table is accurate, at the moment, the relative size between machining features of parts on the working table is accurate, and therefore the effect of correcting the thermal displacement of the working table is achieved. Thermal displacement correction is conducted on the numerical control machine tool workbench in real time, and the positioning accuracy of the workbench is guaranteed.

The invention relates to the technical field of conical sealing rotary valve production, in particular to a pretightening force compensation control device for a conical sealing rotary valve. The device comprises a pre-tightening body, a cylinder, a piston, a ball, a displacement sensor, a pressure sensor and a controller for control, the cylinder, the piston, the ball, the displacement sensor, the pressure sensor and the controller are arranged in the pre-tightening body, in the device, after the conical surface of the rotor is abraded or thermally displaced, the ball descends, and the piston also descends under the action of a wave spring and air pressure; the displacement sensor detects the displacement of the piston in real time, the pressure sensor detects the air pressure in the air cylinder in real time and transmits signals to the controller, the controller immediately calculates the needed air pressure and controls the proportional valve pressure regulator to complete pressure regulation and recover the conical surface sealing force, manual intervention is not needed, and closed-loop control ensures that the sealing force is constant.

The application provides a thermal compensation device and method of a machine tool electric spindle and a numerical control machine tool, and the thermal compensation device comprises a displacement detection device and a control device, a detection part of the displacement detection device is arranged on a tool holder connected with the spindle, the detection part of the displacement detection device and a detection surface of the tool holder are arranged in a vertical direction, and the detection part of the displacement detection device is arranged opposite and parallel to the detection surface of the tool holder; the displacement detection device detects thermal displacement of the spindle in the vertical direction by detecting distance change between the detection part of the displacement detection device and the detection surface of the tool holder; the control device is connected with the displacement detection device, the control device is used for acquiring data detected by the displacement detection device, and the position of the spindle in the vertical direction is adaptively adjusted according to the data detected by the displacement detection device. The thermal compensation device of the machine tool electric spindle can effectively solve the technical problems of the thermal compensation device of the machine tool electric spindle in the prior art, such as complex structure and poor anti-interference ability.

The invention relates to the technical field of aluminum single plate rolling mills, and discloses a rolling mill and method for manufacturing aluminum single plates, the rolling mill comprises a base and a roller machine frame, the left side of the top of the base and the bottom of the roller machine frame are fixedly installed, and a self-adaptive roller bending force compensation mechanism is arranged on the roller machine frame. According to the rolling mill and method for manufacturing the aluminum veneer, the temperature change of the bearing seat is sensed through the bimetallic strip, and a thermal displacement signal is amplified through a structure composed of the first rack, the first gear, the second rack, the third rack and the second gear; and finally, the output pressure of the first oil pressure pushing hydraulic cylinder and the second oil pressure pushing hydraulic cylinder is accurately adjusted by controlling the opening degree of a valve rod of the pilot-operated type hydraulic valve, so that self-adaptive control over the roll bending force of the supporting roll is achieved, the plate shape defect caused by thermal expansion of the working roll can be automatically compensated, the plate shape quality and flatness of the aluminum veneer are remarkably improved, and the service life of the aluminum veneer is prolonged. The problem of middle waves is effectively solved, meanwhile, the synchronism of roll bending force on the two sides is guaranteed through the hydraulic synchronous controller, and the rolling precision is further guaranteed.

An intelligent warm-up method of machine tool, applicable to a machine tool, includes: a step of, based on temperature change data and thermal displacement data of a spindle measured at different time points, establishing a thermal compensation model; a step of, while the machine tool performs a warm-up process, inputting temperature change values measured at least one component of the machine tool at intervals to the thermal compensation model to obtain corresponding thermal-displacement estimated values of the spindle at different time points and changes of thermal displacement values at individual time points; and, a step of, based on the changes of the thermal displacement values at the individual time points, deriving corresponding warm-up completion degrees.

This invention provides an optimization method for thermal deformation compensation of alloy plates based on digital twins, relating to the field of data processing technology. The method includes: collecting multi-source heterogeneous data of the alloy plate to be processed; performing finite element simulations on multiple processing conditions to obtain a residual stress field sample set; performing dimensionality reduction processing on the residual stress field sample set to determine a low-dimensional parameterized expression model; constructing a thermo-mechanical coupling deformation model of the alloy plate by combining the low-dimensional parameterized expression model and processing environment temperature data; mapping the residual stress field to the deformation of the alloy plate structure in the processing coordinate system through the thermo-mechanical coupling deformation model of the alloy plate; constructing a rapid prediction model of the machine tool temperature field; calculating the thermal displacement error of the machine tool structure through the rapid prediction model of the machine tool temperature field; fusing the deformation of the alloy plate structure and the thermal displacement error to obtain a comprehensive deformation error; and calculating the control variables in the processing process based on the comprehensive deformation error to obtain the optimal compensation parameters.

The present invention provides a detection device that can reduce the impact of thermal displacement on the detection target while suppressing the occurrence of problems. [Solution] The detection device is applied to a mechanical device. The mechanical device comprises a rotating body and a hub bearing. The hub bearing has a first bearing portion fixed to a base portion, a second bearing portion to which the rotating body is fixed, and rolling elements, and rotatably supports the second bearing portion with respect to the base portion. The detection device comprises an annular target member 80 fixed to the second bearing portion and extending in the circumferential direction of the second bearing portion with respect to the rotation center of the second bearing portion, and a signal output provided at a position facing the detection target portion in the axial direction. A portion of the target member 80 in the circumferential direction is a thermal displacement portion Rb. The thermal displacement portion Rb is a portion of the target member 80 in which the amount of thermal displacement in the axial direction due to temperature changes of the target member 80 is larger than that of the fixed portion Ra other than the thermal displacement portion Rb.

The utility model discloses a viscous damper simultaneously satisfying bearing and large displacement, which comprises an upper connecting plate connected with a pipe clamp accessory and a lower connecting plate arranged opposite to the upper connecting plate, the lower part of the upper connecting plate is fixedly connected with an upper shell, the upper part of the lower connecting plate is fixedly connected with a lower shell, a sealing sleeve is connected between the upper shell and the lower shell, and the sealing sleeve is fixedly connected with the lower shell. Damping liquid is arranged in an inner cavity of the lower shell, a plunger extending into the damping liquid is fixedly arranged on the lower portion of the upper connecting plate, at least two lower lug handles which are oppositely arranged are arranged at the lower end of the plunger, and the lower lug handles are fixedly connected with tension springs which are obliquely arranged. According to the viscous damper, the requirement for large thermal displacement of a pipeline can be met while vibration reduction of the pipeline is achieved, the tension spring can have the stretching buffering effect on the plunger, the supporting effect and the vibration reduction effect are achieved, and the viscous damper can meet the requirement for large displacement when the pipeline vibrates while bearing the load of the pipeline; and the multifunctionality of the viscous damper is improved.

The invention discloses a multi-wire cutting machine cutting chamber and a thermal displacement control mode, and relates to the technical field of multi-wire cutting machines, the multi-wire cutting machine cutting chamber comprises a structural part frame, and the structural part frame comprises a base, a main shaft mounting seat, a fixing seat, a left stand column and a right stand column; the main shaft mounting seat and the fixed seat are connected through the left and right stand columns to form an integral closed frame; a double-shaft tilt angle sensor is arranged on the workpiece clamp; and the temperature control assembly comprises a control device, a plurality of temperature sensors, and a temperature control medium source, a temperature adjusting unit, a distribution valve group, a plurality of temperature control channels and a liquid return pipeline which are sequentially connected to form a circulation loop. The main shaft mounting base and the fixing base are connected through the left stand column and the right stand column to form an overall closed frame, the rigidity of the frame is enhanced, the frame is provided with a plurality of independent temperature control channels, and dynamic keeping of cutting precision is achieved through real-time feedback of the double-shaft tilt angle sensor and active adjustment of the temperature control assembly.

The utility model discloses a kind of efficient vertical packing gland gas heat exchangers, including pressure-bearing shell, for conveying high-temperature gas's pipe, for conveying low-temperature gas's shell and heat exchange part. Pipe is blocked by heat insulation sleeve pipe and heat insulation layer and is transmitted to shell wall and shell course upper cavity, upper tube sheet can be moved up and down to compensate thermal expansion difference, shell course sets up packing gland sealing and solves thermal displacement compensation problem, support cylinder and annular baffle cooperation guide low-temperature gas to flow through all heat exchange area, improve heat exchange efficiency;Baffle plate enhances shell course gas turbulence, and guide distribution blade optimizes upper cavity area airflow distribution. The utility model is through multiple heat insulation, displacement compensation and fluid path optimization design, significantly improve heat exchange efficiency, prolong the life of equipment, reduce maintenance cost, with wide application prospect.

The invention relates to the technical field of bearing mechanical devices, in particular to a precise main shaft bearing pre-tightening force self-adaptive adjusting method based on thermal error decoupling. Comprising the steps that in a bearing assembly of a tapered roller bearing, thermal displacement errors and actual pre-tightening force of a main shaft are collected, a dynamic stiffness threshold value and a contact uniformity threshold value are calculated according to working condition loads, the rotating speed of the main shaft and the environment temperature, and roller friction heat flow is collected; calculating a mechanical displacement effect and a friction heat effect, calculating an axial thermal elongation component by using a roller friction heat flow, separating the component from a thermal displacement error, and generating a decoupling result; calculating the dynamic rigidity and the load uniformity through a bearing heat engine coupling model, verifying whether the pre-tightening force meets requirements or not, and if not, adjusting the pre-tightening force to a boundary point of a feasible region and recalculating the pre-tightening force adjustment amount; and pre-tightening force adjustment amount is applied to the outer ring of the tapered roller bearing. According to the invention, through thermal error decoupling, fine pre-tightening force self-adaptive adjustment is realized.

The invention discloses a numerical control machine tool thermal error online compensation control method and system, and belongs to the technical field of numerical control machine tool precision machining.The method comprises the steps that temperature data and operation parameters of key parts of a machine tool are collected, and temperature feature vectors are generated; constructing a temperature field adjacent matrix, and predicting future temperature field distribution; establishing nonlinear mapping of the temperature field and thermal deformation by adopting a graph neural network, and outputting a thermal displacement predicted value; superposing the compensation instruction to the original track for execution; according to the method, the spatial correlation characteristics of the temperature field are captured by adopting graph convolution operation, the thermal error prediction precision is superior to 2 microns, and the compensation rate reaches 85% or above.

The invention provides a piston type through-wall pipe heat preservation structure and a construction method thereof.The heat preservation structure comprises a sleeve arranged on the outer side of a through-wall pipe in a sleeving mode, one end of the sleeve is arranged on a furnace wall, the through-wall pipe can move relative to the sleeve in the axial direction, and a first heat preservation layer is arranged on the outer side of the through-wall pipe; the outer wall of the first heat preservation layer is in close sliding fit with the inner wall of the sleeve, and a second heat preservation layer is arranged outside the sleeve. The device further comprises a positioning assembly which is used for locking and fixing the first heat preservation layer to the through-wall pipe, so that the first heat preservation layer and the through-wall pipe keep moving synchronously. According to the invention, the inner-layer thermal insulation structure is used as a piston which slides in the sleeve and is adaptive to large-stroke thermal displacement of the through-wall pipe, and meanwhile, the positioning assembly is used for preventing the thermal insulation layer from slipping, so that the problems that a traditional thermal insulation structure is easy to damage and poor in sealing property and a thermal insulation material is easy to fall off are solved, and the safety specification that a pressure pipeline is free of welding is met.

The application discloses a kind of multimodal AI real-time thermal error compensation robot component processing method and system.The method is by collecting temperature, working condition and thermal displacement and other multimodal data, establish the nonlinear, time-varying mapping relationship between temperature, working condition and thermal displacement, realize the accurate prediction of future thermal displacement.Based on the prediction data, the system calculates the reverse compensation amount in real time, and issues to the robot control system to offset thermal error.For the case of insufficient or excessive compensation, secondary compensation and reverse compensation process are introduced, and the prediction period is dynamically adjusted by combining the time correction coefficient, forming a closed-loop intelligent control.The application effectively overcomes the hysteresis and singleness of traditional compensation method, significantly improves the precision, stability and self-adaptive ability of robot precision component processing.

The application discloses a high-speed low-vibration magnetic suspension power generation system and belongs to the technical field of power generation. The system is mainly composed of a rack, a generator, an external driving device, an elastic coupling, a bearing control mechanism and a cooling pipeline assembly. A multi-source sensing array is adopted, and feedforward control is used to realize bidirectional active vibration suppression of the system and the external environment. The elastic coupling is used to decouple the dynamic characteristics of the external driving device and the generator rotor. The cooling pipeline is matched with a rigid support body and a spherical compensator to synchronously realize vibration transmission interruption and pipeline thermal displacement compensation. The application solves the pain points of the existing magnetic suspension power generation system, such as weak integration adaptability, inability to cooperatively suppress internal and external vibrations, pipeline vibration and thermal displacement affecting operation reliability, and has high overall integration and power density, excellent vibration reduction effect in the full frequency band, and is suitable for high-speed large-capacity low-vibration application scenarios such as ships and precision manufacturing.

The application relates to the technical field of bearing mechanical devices, in particular to a precision spindle bearing pre-tightening force self-adaptive adjusting method based on thermal error decoupling. The method comprises the following steps: collecting thermal displacement errors and actual pre-tightening forces of a spindle in a bearing assembly of a tapered roller bearing; according to working conditions, a spindle rotating speed and an environment temperature, dynamic stiffness threshold values and contact uniformity threshold values are calculated; roller friction heat flow is collected; mechanical displacement effects and friction heat effects are calculated, and an axial thermal elongation component is calculated by using the roller friction heat flow; the above components are separated from the thermal displacement errors to generate decoupling results; dynamic stiffness and load uniformity are calculated through a bearing thermal-mechanical coupling model, and whether the pre-tightening force meets the requirements is verified; if the pre-tightening force does not meet the requirements, the pre-tightening force is adjusted to a boundary point in a feasible region, and the pre-tightening force adjustment amount is recalculated; and the pre-tightening force adjustment amount is applied to an outer ring of the tapered roller bearing. The pre-tightening force is self-adaptively adjusted through thermal error decoupling.

The invention relates to the technical field of finite element simulation testing, in particular to a support hanger vibration stress state analysis method based on finite element analysis, which comprises the following steps: step 1, creating a three-dimensional model of a steam-water pipeline system comprising a support hanger; 2, finite element software is imported, a spring unit, thermal displacement boundary conditions and connection rigidity are finely defined, and a high-fidelity finite element model is established; 3, statics analysis and modal analysis are carried out, and stress, strain, inherent frequency and vibration mode under the action of gravitational acceleration, pipeline internal pressure, pipeline operation temperature and pipeline displacement load are obtained; and 4, based on the material strength and the vibration test frequency, judging the model precision and reliability, and if not, optimizing the model parameters. According to the method, boundary conditions and model parameters are finely defined, and verification and correction are performed by using experimental data, so that the simulation precision of the model is remarkably improved, and the model can be reliably used for identifying and analyzing the load of the support hanger.

To provide a method for accurately estimating an elevated temperature value at a place where heat is generated, in accordance with a state of the place where heat is generated, in a machine tool equipped with a cooling device, a method for estimating a thermal displacement amount at the place where heat is generated, a method for controlling the cooling device for cooling the place where heat is generated, and a machine tool that can execute the method for estimating the elevated temperature value.SOLUTION: A machine tool, which is equipped with a spindle cooling device 7, comprises temperatures sensors 13 and 14 which can measure a temperature of the machine tool and a temperature of a spindle 3, which determines an operation state of the spindle cooling device 7 and determines whether a time measured based on the fact that the spindle cooling device 7 is operated or stopped passes over a preset delay time or not, so as to determine a cooling state of the spindle 3, selects a suitable estimation model corresponding to the cooling state of the spindle 3 out of a plurality of estimation models A-D corresponding to different cooling states of the spindle 3, and calculates an estimated elevated-temperature value of the spindle 3 on the basis of the estimation mode and temperature data derived from measurement values obtained by the temperature sensors 13 and 14.SELECTED DRAWING: Figure 1

This invention provides a calculation device capable of calculating the thermal displacement of a support portion based on the position of a drive portion. The calculation device includes: a position measuring unit for measuring the position of a movable drive portion supported on a support portion; a heat conduction calculation unit for calculating the heat conduction from the drive portion toward the support portion at the position measured by the position measuring unit; a first temperature calculation unit for calculating the temperature of the support portion based on the heat conduction calculated by the heat conduction calculation unit; and a first thermal displacement calculation unit for calculating the thermal displacement of the support portion based on the temperature calculated by the first temperature calculation unit.

This invention discloses a series-parallel hoisting system for multi-compartment pumps in a dust collector, belonging to the field of ash conveying technology for dust collectors in thermal power plants. It includes an ash conveying header and several sets of ash conveying units. Each set of ash conveying units is connected to the header and used to transport fly ash from the other sets of units to the header, where it is collected and discharged. Each ash conveying unit includes an ash conveying pipe and several sets of ash conveying devices. The ash conveying devices are connected in series via the ash conveying pipe. Each ash conveying device includes a receiving component and a conveying component. Compensation components are provided between the receiving component and the conveying component, or between the conveying component and the conveying pipe, to absorb thermal displacement. This multi-compartment pump series-parallel hoisting system effectively solves the problems in existing technologies where multiple compartment pumps are connected in series via ash conveying pipes, resulting in different thermal displacements in different ash hoppers, leading to deformation or even damage to the conveying pipes or pumps; and also addresses the low ash conveying efficiency.

The invention discloses a cooperative control compensation method for thermal-dynamic hysteresis coupling interference of an electric spindle. The cooperative control compensation method comprises the steps that an experimental platform is built, and thermal field data, dynamic characteristic data and contact interface state data are acquired; based on collected data and related theories, an error transfer tree model is constructed, and an error transfer path and weight are clarified; generating a feature vector reflecting the comprehensive state of the motorized spindle by integrating dominant perception and implicit state estimation and combining a model; fusing the adaptive sliding mode and the thermal deformation compensation amount to generate a cooperative control amount; through thermal displacement prediction compensation, dynamic hysteresis real-time compensation and virtual-real interaction parameter optimization, a compensation instruction is executed, and compensation parameters are optimized online; and a compensation effect is fed back to a state sensing link, a control strategy and model parameters are dynamically adjusted, a closed loop is formed, and coupling errors are accurately suppressed. The invention further discloses a cooperative control compensation system for thermal-dynamic hysteresis coupling interference of the electric spindle. The machining precision and the operation stability of the motorized spindle in the whole life cycle can be remarkably improved.

The invention provides a height and angle adjustable pipeline sliding supporting device and a using method, and aims to overcome the defects in the prior art and ensure that a steam-water pipeline can safely and reliably operate under various working conditions. The invention relates to the field of power plant steam-water pipeline design, the supporting device comprises a fixed steel plate, an adjusting steel plate, four supporting screw rods and a self-leveling seat, each screw rod is provided with two locking nuts, two spherical washers, two inclined washers and an adjusting nut, and the inclination angle of the adjusting steel plate is consistent with the inclination angle of the self-leveling seat through the adjusting nuts; and the adjusting steel plate is effectively contacted with the relative sliding surface of the self-leveling seat, so that the pipeline can be effectively and rigidly supported under various working conditions, the mounting deviation and the thermal displacement deviation of pipeline stress calculation can be simply adjusted on site, and complex procedures such as alignment again, cutting and matching, welding again and the like are not needed.

This application relates to a floating connection structure for a double-layer chimney inspection tube, belonging to the field of chimney technology. It includes an outer cylinder, an inner cylinder, and an inspection tube connecting to the inner cylinder. A floating connection structure is provided at the side hole of the outer cylinder through which the inspection tube passes. This structure consists of an outer frame welded to the outer cylinder, a cover plate with a central hole, and an elastic sealing cover. One end of the sealing cover is locked to the outer wall of the inspection tube by a hose clamp, and the other end is pressed onto the cover plate by a split-type pressure ring. Its innovation lies in: compensating for the thermal displacement of the inner and outer cylinders through the flexible deformation of the elastic sealing cover, achieving dynamic sealing. This solves the stress cracking and leakage risks of traditional rigid connections, significantly improving the operational safety and maintenance convenience of the chimney.

The application discloses a pre-buried comprehensive support and hanger adjustable installation component and a construction method thereof, and relates to the technical field of building engineering electromechanical pipeline installation support and hanger. The component comprises a support and hanger body and a pre-buried column, and the support and hanger body is hung on the lower end of the pre-buried column through a connecting assembly. The connecting assembly comprises an adjusting column, a supporting disc, a locking seat, a connecting rod and a knob. The adjusting column is in threaded cooperation with the pre-buried column to realize height adjustment. The locking seat is in cooperation with the supporting disc through a square connecting block to transmit torque. A compression spring drives a clamping rod to be automatically clamped into a ring-shaped clamping groove to complete locking, and a guide rod is arranged to prevent the support and hanger body from rotating. The support and hanger body can be further provided with a horizontal sliding structure composed of a pipe support, a base and a ball row to adapt to pipeline thermal displacement. The application realizes accurate height adjustment and reliable locking of the pre-buried support and hanger after installation, can simultaneously meet the requirements of vertical adjustment and horizontal thermal displacement compensation, and improves pipeline installation precision and efficiency.

The bearing damper comprises an upper connecting plate and a lower connecting plate located below the upper connecting plate, the upper portion of the lower connecting plate is fixedly connected with a shell containing damping liquid, the lower portion of the upper connecting plate is fixedly connected with a plunger extending into the damping liquid, and a sealing body is connected between the upper portion of the shell and the upper portion of the plunger. End covers penetrate through the periphery of the shell and are in sliding connection with guiding bodies, the guiding bodies are rotationally connected to adjusting screw rods in threaded connection with the end covers through bearings, and elastic bodies are fixedly arranged at the ends, close to the plungers, of the guiding bodies. The plunger can be reversely biased towards the thermal displacement of the pipeline through the elastic body, the situation that the plunger abuts against the inner wall of the shell due to the fact that the displacement of the pipeline is too large is avoided, secondary stress of the pipeline is prevented, safe operation of the pipeline is guaranteed, vibration of the pipeline can be gradually reduced under the condition that damping liquid continuously generates viscous resistance on the plunger, and the service life of the pipeline is prolonged. And the damping effect of the damper on the pipeline is ensured.

The invention belongs to the technical field of heat exchange unit pipeline supporting, and particularly discloses a heat exchange unit pipeline supporting frame which comprises a base, a pipe clamp assembly and a multi-dimensional buffering and self-adaption mechanism connected between the base and the pipe clamp assembly. The supporting frame has the multi-dimensional buffering and thermal displacement self-adaption functions, can effectively attenuate vibration and impact in the vertical direction and the horizontal direction at the same time, and can guide and adapt to axial displacement generated by expansion caused by heat and contraction caused by cold of a pipeline, so that the stress level of a pipeline system is remarkably reduced, and the operation safety and reliability are improved.

The application discloses a kind of based on cooling liquid temperature's numerical control machine tool spindle thermal error modeling method, belong to numerical control machine tool error compensation technical field;The method is collected temperature data by temperature sensor arranged at the entrance and exit of spindle cooling liquid pipeline, and synchronous measurement spindle thermal displacement;Based on the temperature of entrance and exit, two key temperature features are constructed;TCN-PeepholeLSTM parallel double-branch temperature feature extraction layer is constructed, and global feature and complex dependence of temperature time sequence are extracted respectively;After the double-branch feature is spliced, the time sequence modeling capability is enhanced by gate attention layer;Finally, the thermal error prediction value is output through nonlinear activation layer and fully connected layer.The temperature measuring point is moved from the front end of spindle which is easy to be disturbed to the rear cooling liquid pipeline, the sensor is arranged simply, the signal noise is low, and the anti-interference ability and prediction robustness of the model are effectively improved;Reliable and easy-to-implement technical foundation is laid for numerical control machine tool thermal error compensation.