Wind tunnel body part suspension system and method
Technical Field
The application relates to the technical field of wind tunnel body structures, in particular to a wind tunnel body component suspension system and a wind tunnel body component suspension method.
Background
For the conventional wind tunnel body parts, most of the wind tunnel body parts adopt a supporting structure arranged on a foundation, so that the supporting structure has poor anti-interference capability, only two ends of the parts are selected as measurement references for installation and adjustment measurement, and the installation and adjustment operability is blind.
For a part with higher requirement on the installation and positioning reference between wind tunnel body parts like a 'static wind tunnel', the part can not meet the high-precision requirement on the installation and positioning between wind tunnel body parts when being placed on a foundation for supporting.
Disclosure of Invention
In order to meet the requirement of higher positioning precision of the wind tunnel body component installation, the coaxiality of the central line after the component installation relative to the overall central axis of the wind tunnel is not more thanThe application discloses a wind tunnel body part suspension system and a method for solving the problems, wherein the step difference between two parts is not more than 0.05mm, and only X-direction freedom degree is achieved after equipment is in place.
The technical scheme is as follows:
The wind tunnel body part suspension system comprises a portal frame, a suspension hoop connection platform, adjustable suspension pull rods and sliding seats, wherein at least two H-shaped rails are connected between the portal frames and are respectively arranged at two ends of the inner side of the portal frame, the suspension hoop connection platform is connected with split hoops, the split hoops are connected to the outside of the wind tunnel body part, each wind tunnel body part is connected with two suspension hoop connection platforms, two ends of each suspension hoop connection platform are connected to the sliding seats through the adjustable suspension pull rods, and the sliding seats are connected to the two H-shaped rails in a sliding mode.
In the wind tunnel body part suspension system, the split type anchor ear comprises anchor ears divided into an upper anchor ear and a lower anchor ear, anchor ear connecting rods are connected between the anchor ears, nuts for locking the anchor ears are arranged on the anchor ear connecting rods, and the top ends of the anchor ear connecting rods are connected to a suspension anchor ear connecting platform.
In the wind tunnel body part suspension system, the suspension hoop connection platform comprises a connection platform and lugs connected to two ends of the connection platform, the lugs are obliquely arranged, and the included angle between the two lugs at two ends of the connection platform is 120 degrees.
In the wind tunnel body component suspension system, the connection platform comprises an upper plate, a lower plate, side plates, a fixing plate and a reinforcing plate, wherein the upper plate and the lower plate are parallel to each other, the side plates are connected to the end parts of the upper plate and the lower plate, the lug seat is fixedly connected to the side plates, the fixing plate is perpendicular to the upper plate and connected to the middle parts of the upper plate and the lower plate, and the reinforcing plate is obliquely connected between the upper plate and the lower plate.
In the wind tunnel body part suspension system, the adjustable suspension pull rod comprises a pull ring, a rough thread pull rod and a fine thread pull rod, wherein the rough thread pull rod and the fine thread pull rod are respectively connected to two ends of the pull ring, nuts are connected to the positions of the rough thread pull rod and the fine thread pull rod, which penetrate through the two sides of the pull ring, in a threaded manner, the other ends of the fine thread pull rod and the spherical hinge lug are spherical hinge lugs, the fine thread pull rod is connected to the suspension hoop connection platform through the spherical hinge lug, and the rough thread pull rod is connected with the sliding seat through the spherical hinge lug.
In the wind tunnel body part suspension system, the inner sides of the two ends of the portal frame are fixedly connected with the connecting inclined plates, the H-shaped track is H-shaped steel, and the upper wing plate of the H-shaped steel is connected with the connecting inclined plates through bolts.
In the wind tunnel body part suspension system, the included angle between the H-shaped steel and the horizontal plane is 30 degrees.
In the wind tunnel body part suspension system, the sliding seat comprises a bearing sliding block, a follow-up sliding block and a connecting plate, wherein the bearing sliding block is positioned on one side of a web plate of the H-shaped steel towards the center of the portal frame, the follow-up sliding block is positioned on one side of the web plate of the H-shaped steel away from the center of the portal frame, the connecting plate is positioned below the lower wing plate of the H-shaped steel and is connected between the bearing sliding block and the follow-up sliding block, and one side of the connecting plate away from the bearing sliding block and the follow-up sliding block is connected with an ear seat connected with an ear ring at the end part of the coarse tooth thread pull rod.
In the wind tunnel body part suspension system, the side surfaces of the bearing sliding blocks, which are abutted with the web plate and the lower wing plate of the H-shaped steel, are connected with the rolling guide rail blocks, and the side surfaces of the following sliding blocks, which are abutted with the lower wing plate of the H-shaped steel, are connected with the rolling guide rail blocks.
A method for suspending a wind tunnel body component, comprising the steps of:
S1, installing a connecting platform, an adjustable suspension pull rod and a wind tunnel body part on a reference platform into a whole, temporarily placing the connecting platform and the wind tunnel body part on an auxiliary installation support, adjusting the connecting platform to be parallel to the central line of the wind tunnel body part, and ensuring that the distances from the upper surfaces of the two pairs of connecting platforms to the central line, which are equal, are equal;
s2, scribing the upper surface of the connecting platform, wherein one line is parallel to the central line of the wind tunnel body part, one line is perpendicular to the central line of the wind tunnel body part, and the end part of the adjustable suspension pull rod is connected to the sliding seat of the portal frame;
s3, setting the horizontal plane passing through the central line of the wind tunnel body as a horizontal symmetrical reference plane and the vertical plane passing through the central line of the wind tunnel body as a vertical symmetrical reference plane, solidifying the horizontal symmetrical reference plane and the vertical symmetrical reference plane into a laboratory factory building, regulating the laser theodolite reference to the horizontal and vertical symmetrical reference planes of the wind tunnel body, and recording readings;
And S4, placing a height ruler on the connecting platform by taking the existing scribing line as a reference, respectively measuring the positions and readings of the height ruler placed on the two suspension hoop platforms by using a laser theodolite for position calibration, and adjusting the lengths of the coarse thread pull rod and the fine thread pull rod of the adjustable suspension pull rod system to realize the position adjustment of the wind tunnel body part.
In summary, the application at least comprises the following beneficial technical effects:
1. According to the suspension anchor ear connecting platform, the parts are fixed, and meanwhile, the horizontal center symmetry plane of the parts is materialized, so that the installation, the debugging and the measurement are facilitated;
2. The adjustable suspension pull rod provided by the application is used for adjusting the installation positions of the components through the coarse tooth screw and the fine tooth screw respectively. Ensuring that the components are in a balanced state after the components are in place;
3. according to the sliding seat and the gantry bracket, the rail is built by using the gantry, and the rolling guide rail block is used as a moving part to design the sliding seat, so that the bearing and moving problems are solved.
Drawings
FIG. 1 is a schematic perspective view of a suspension system for a tunnel component in accordance with an embodiment of the present application;
FIG. 2 is a general assembly view of a wind tunnel component suspension system;
FIG. 3 is a schematic view of the structure of a suspension hoop connection platform;
FIG. 4 is a schematic view of the structure of an adjustable suspension tie rod;
FIG. 5 is a schematic view of a gantry and H-track configuration;
fig. 6 is a schematic structural view of the sliding seat.
The drawing illustrates that the adjustable suspension pull rod is 101, the suspension hoop is connected with the platform, 103, the sliding seat is 104 and the portal frame is provided;
201. A connecting platform; 202, a hoop connecting rod 203, an ear seat;
301. The device comprises a spherical hinge ear ring, 302, a coarse thread pull rod, 303, a pull ring, 304 and a fine thread pull rod;
402. 403, connecting sloping plates;
501. the device comprises a bearing slide block, a rolling guide rail block, a follow-up slide block, a connecting lug seat, a connecting plate and a connecting plate, wherein the bearing slide block is 502;
61. Upper plate, 62, lower plate, 63, side plate, 64, fixing plate, 65, reinforcing plate.
Detailed Description
The application is described in further detail below with reference to figures 1-6 and the accompanying examples:
In order to meet the higher requirement of the installation and positioning precision of the wind tunnel body component, the coaxiality of the central line of the component after installation relative to the central axis of the wind tunnel body is not more than The step difference of the two parts is not more than 0.02mm, and only the degree of freedom in the X direction is achieved after the parts are in place.
Taking a pipe section as an example to describe a suspension system of wind tunnel body equipment, referring to fig. 1 and 2, a suspension system of wind tunnel body components comprises a portal frame 104, a suspension hoop connecting platform 102, an adjustable suspension pull rod 101 and a sliding seat 103, wherein the suspension hoop connecting platform 102 is used for suspending the wind tunnel body components on the portal frame 104 through the adjustable suspension pull rod 101 and the sliding seat 103.
Referring to fig. 1 and 2, two sets of portal frames 104 are respectively arranged at two ends of a wind tunnel body component, in this embodiment, two portal frames 104 are arranged, each set of portal frames 104 is formed by welding profile steel, the bottom of each portal frame 104 is fixedly installed on a wind tunnel foundation, in order to ensure the carrying capacity of each portal frame 104, the welding structure of each portal frame 104 needs to ensure enough strength and rigidity, two H-shaped rails 402 are installed between the two sets of portal frames 104, the two H-shaped rails 402 are respectively arranged at two end positions on the inner side of each portal frame 104, and each rail is composed of processed H-shaped steel. Specifically, the connection sloping plates 403 are fixedly connected to the inner sides of the two ends of the portal frame 104, and the upper wing plates of the H-shaped steel are connected with the connection sloping plates 403 through bolts, so that the H-shaped steel forming an angle of 30 degrees with the horizontal plane is used as an H-shaped track 402.
Referring to fig. 5 and 6, the sliding seat 103 is slidably connected to the H-shaped rail 402 along the length direction of the H-shaped rail 402, the sliding seat 103 includes a bearing slider 501, a follower slider 503, and a connecting plate 505, the bearing slider 501 is located on one side of the web of the H-shaped steel facing the center of the portal frame 104, the side of the bearing slider 501 facing the web of the H-shaped steel and the side of the bearing slider 501 facing the lower wing plate of the H-shaped steel are perpendicular to each other, the follower slider 503 is located on one side of the web of the H-shaped steel facing away from the center of the portal frame 104, the connecting plate 505 is located below the lower wing plate of the H-shaped steel and is connected between the bearing slider 501 and the follower slider 503, one side of the connecting plate 505 facing away from the bearing slider 501 and the follower slider 503 is connected with a connecting lug 504 connected with an earring at the end of the coarse thread pull rod 302, and a pin is disposed on the connecting lug 504 and connected with the adjustable suspension pull rod 101. The side surfaces of the bearing slide blocks 501, which are abutted against the web plate and the lower wing plate of the H-shaped steel, are connected with rolling guide rail blocks 502, and the side surfaces of the following slide blocks 503, which are abutted against the lower wing plate of the H-shaped steel, are connected with the rolling guide rail blocks 502. The structural arrangement ensures that the bearing slide block 501 has better bearing capacity and has a guiding function, and the arrangement of the bearing slide block 501 and the follow-up slide block 503 ensures that the wind tunnel component moves smoothly and stably in the X direction.
Referring to fig. 3, each suspension hoop connection platform 102 is connected with a split hoop, the split hoops are connected to the outside of the wind tunnel body part, the split hoops are formed by welding preset arc-shaped steel plates and rib plates, and the welded heat treatment whole 63 is processed. The two ends of the wind tunnel body component are respectively connected with a split type hoop, namely the two ends of the wind tunnel body component are respectively connected with a hanging hoop connecting platform 102, the split type hoop comprises hoops which are divided into an upper hoop body and a lower hoop body, a hoop connecting rod 202 is connected between the two hoop body halves, threads are machined at the two ends of the hoop connecting rod 202, nuts for locking the two hoop halves are arranged on the hoop connecting rod 202, each split type hoop is locked by the 4 hoop connecting rods 202 and the nuts and nuts on the hoop connecting rod 202, so that the split type hoop clamps the wind tunnel body component, and the contact between the hoop and the wind tunnel body component is ensured to be good and stable. The top of staple bolt connecting rod 202 is connected in hanging staple bolt connection platform 102, and the both ends of every suspension staple bolt connection platform 102 all are connected in sliding seat 103 through adjustable suspension pull rod 101, and two sets of adjustable suspension pull rods need to be installed to every pair of staple bolt platform that hangs promptly, and two sets of adjustable suspension pull rods are 120 with the overall axis of wind tunnel body as the center and are arranged.
Referring to fig. 3 and 4, the suspension anchor ear connection platform 102 includes a connection platform 201 and an ear mount 203,4 connected to two ends of the connection platform 201, wherein the top ends of anchor ear connection rods 202 are connected to the connection platform 201, the connection platform 201 includes an upper plate 61, a lower plate 62, a side plate 63, a fixing plate 64, and a reinforcing plate 65, the upper plate 61 and the lower plate 62 are parallel to each other, the side plate 63 is connected to the ends of the upper plate 61 and the lower plate 62, the ear mount 203 is fixedly connected to the outer surface of the side plate 63, the ear mount 203 is obliquely arranged, with respect to the central axis of the wind tunnel body, the included angle between two ear mounts 203 located at two ends of the connection platform 201 is 120 degrees, the fixing plate 64 is perpendicular to the upper plate 61 and is connected to the middle of the upper plate 61 and the lower plate 62, and the reinforcing plate 65 is obliquely connected between the upper plate 61 and the lower plate 62. The upper surface of the connection stage 201 is finished to ensure sufficient flatness and roughness. The upper surface of the connection platform 201 is adjusted to be parallel to the overall central axis of the wind tunnel body, and the distance from the upper surface of the connection platform 201 to the central axis of the wind tunnel body is the same, and the upper surface of the connection platform 201 is used as a measurement reference for installation adjustment.
The adjustable suspension pull rod 101 comprises a pull ring 303, a rough thread pull rod 302 and a fine thread pull rod 304, wherein the rough thread pull rod 302 and the fine thread pull rod 304 are respectively connected to two ends of the pull ring 303, nuts are in threaded connection with the rough thread pull rod 302 and the fine thread pull rod 304 at two side positions penetrating through the pull ring 303, the spherical hinge earrings 301 are arranged at the other ends of the fine thread pull rod 304 and the spherical hinge earrings 301, the spherical hinge earrings 301 of the fine thread pull rod 304 are arranged on the lug 203 of the connection platform 201 through pins, and the spherical hinge earrings 301 of the rough thread pull rod 302 are arranged on the lug 203 of the sliding seat 103 through pins. The length of the coarse thread pull rod 302 and the length of the fine thread pull rod 304 are adjusted, so that the installation position of the wind tunnel body part clamped on the hanging hoop connecting platform 102 is adjusted. So as to meet the technical requirements of installation between wind tunnel body components.
The adjustable suspension tie system is a rigid structure that provides a pulling force and the weight of the tunnel body components are 120 ° to each other. The central axis direction of the wind tunnel body component is set as an X direction, the vertical direction is set as a Y direction, the directions perpendicular to the X direction and the Y direction are set as a Z direction, the Y-X direction is set as pitching alpha, the X-Z direction is set as yaw beta, and the rotation around the X direction is set as rolling gamma. Through statics analysis, the wind tunnel body component is in a stress balance state in the Y direction and the Z direction, the Y direction and the Z direction have no degrees of freedom, and after two sets of hanging hoop connecting platforms 102 and 4 sets of adjustable hanging pull rod systems arranged on each tunnel body component are combined and locked, the tunnel body component has no degrees of freedom of pitching alpha, yawing beta and rolling gamma. The cavity member has only X-direction freedom.
The embodiment also discloses a wind tunnel body part hanging method, which comprises the following steps:
And arranging and installing anchor bolts of the portal frame 104 on the foundation of the wind tunnel body component, and hoisting the welded integrally-processed portal frame 104 to the reserved anchor bolts of the tunnel body foundation for installation. The horizontal plane of the axis of the wind tunnel body is the horizontal symmetrical plane of the wind tunnel body, and the vertical plane of the axis of the wind tunnel body is the vertical symmetrical plane of the wind tunnel body. The method comprises the steps of taking a horizontal symmetrical plane and a vertical symmetrical plane of a wind tunnel body as references, adjusting installation positions of two sets of portal frames 104, measuring parallelism error of the reference plane and the horizontal symmetrical plane by 0.1mm and perpendicularity error of the reference plane and the vertical symmetrical plane by 0.1mm by the portal frames 104 after adjustment, installing an H-shaped track 402 on the portal frames 104 through bolts after the portal frames 104 are installed in place, and ensuring that the two track planes form 30+/-3 degrees with the horizontal symmetrical plane of the wind tunnel body on the sliding surface of a ground cleaning treatment track before the two tracks are installed.
The rolling guide rail blocks 502 are arranged in the mounting surfaces of the bearing slide blocks 501 and the follow-up slide blocks 503 in advance, after the rolling guide rail blocks 502 and the follow-up slide blocks 503 are arranged, the bearing slide blocks 501 and the follow-up slide blocks 503 can slide smoothly on a reference platform without clamping stagnation, the bearing slide blocks 501 and the follow-up slide blocks 503 are arranged on a track according to the structure of the sliding seat 103, the bearing slide blocks 501 and the follow-up slide blocks 503 are fixedly connected through the connecting plates 505, after the rolling guide rail blocks 502 are assembled, the sliding seat 103 is required to slide on the track in a trial mode, smooth sliding is ensured, meanwhile, only the rolling guide rail blocks 502 arranged on the sliding seat 103 are ensured to be contacted with the track surface, the rest parts are not contacted, and two pairs of sliding seats 103 are correspondingly arranged on each suspension anchor ear system.
The suspension anchor ear connecting platform 102 and the wind tunnel body component are installed into a whole on the reference platform, the reference platform is used as a measurement reference, the connecting platform 201 is adjusted to be parallel to the center line of the component, the distances from the upper surfaces of the two pairs of connecting platforms 201 to the center line are equal, all the components are mutually locked after the adjustment is completed, meanwhile, the upper surface of the connecting platform 201 is marked, one line is parallel to the axis of the wind tunnel body component, the other line is perpendicular to the axis of the wind tunnel body component, and the measurement reference is provided for the next installation, so that the central axis of the wind tunnel body component is materialized on the connecting platform 201 of the suspension anchor ear system.
The wind tunnel body component and the hanging hoop platform are installed into an integrated structural component to be temporarily placed on a movable ground auxiliary installation support, the wind tunnel body component and the hanging hoop platform are transported to the vicinity of a component installation position by the auxiliary installation support, and the position of the component is initially adjusted by the auxiliary installation support.
The sliding seat 103 on the track of the portal frame 104 is installed in place before, at the moment, the position of the lug 203 on the sliding seat 103 is determined, according to the theoretical position of the wind tunnel body component, the distance between the pin hole of the lug 203 on the connecting platform 201 and the pin hole of the lug 203 on the connecting plate 505 of the sliding seat 103 can be obtained through preliminary geometric calculation, at the moment, the length of the suspension pull rod system is preliminarily adjusted to the calculated value between the two lugs 203 according to the calculation result, then the lugs at the two ends of the suspension pull rod system are installed on the lug 203 through pins, and the actual length of the suspension pull rod system can be realized through adjusting the length of the fine-tooth and coarse-tooth threaded pull rod 302.
At this time, the wind tunnel body component is initially installed in place through the suspension hoop platform, the adjustable suspension pull rod system, the sliding seat 103 and the portal frame 104, and the auxiliary installation support is separated from the wind tunnel body component and only plays a role in safety protection.
The laser theodolite datum is adjusted to the horizontal and vertical symmetrical datum planes of the wind tunnel body, the horizontal and vertical symmetrical planes of the wind tunnel body are solidified in a laboratory factory building, the theodolite reading at the moment is recorded, the connecting platform 201 is used as a datum to place a height gauge, because the distance and the parallelism between the connecting platform 201 and the central axis of the hole body part are adjusted and fixed on the datum platform, the reading of the height gauge is obtained by adding the reading of the height gauge to the central reading of the part of the connecting platform 201, namely the reading value of the height gauge of the theodolite, the positions of the parts are adjusted by adjusting the lengths of the coarse thread pull rod 302 and the fine thread pull rod 304 of the adjustable suspension pull rod system, and the central axis of the part is adjusted to be consistent with the central axis of the wind tunnel body.
And the positions and readings of the height gauges placed on the two suspension hoop platforms are respectively measured by a laser theodolite, so that the Y-direction, Z-direction, yaw beta, pitch alpha and roll gamma directions of the wind tunnel body component relative to the central axis of the wind tunnel body are adjusted, and the coaxiality requirement of the component central axis and the central axis of the wind tunnel body is met.
After the position of the first wind tunnel body part meets the requirement, locking all adjustable parts of the suspension system, wherein the wind tunnel body part can be used as a position reference of the next wind tunnel body part connected with the next wind tunnel body part, and the measuring and adjusting mode is repeated to ensure the position precision of the wind tunnel body part and the step difference between two adjacent wind tunnel body parts.
The application of the wind tunnel body equipment suspension system can improve the installation precision of the tunnel body parts and the running stable state.
The above embodiments are not intended to limit the scope of the application, so that the equivalent changes of the structure, shape and principle of the application are covered by the scope of the application.