CN118654853B - A device for adjusting the expansion angle of the wall panel of a wind tunnel test section - Google Patents

Abstract

The present invention discloses a device for adjusting the expansion angle of the wall panel of a wind tunnel test section, which belongs to the technical field of wind tunnel test. The device comprises a machine body, wherein a first air outlet slot is arranged inside the machine body, a second air outlet slot is arranged inside the machine body, the width of the second air outlet slot is greater than the width of the first air outlet slot, a wall panel mechanism is symmetrically installed inside the second air outlet slot, the wall panel mechanism comprises a rigid plate fixedly installed on the inner wall of the second air outlet slot close to the machine body, an expansion plate is arranged on one side of the rigid plate, and a rotating connection assembly is installed between the rigid plate and the expansion plate; in the present invention, during operation, the fixed plate is rotatably connected with the rotating shaft through the set fixed plate, and the arc surface arc arranged on the outer wall of the fixed plate is the same as the arc surface arc of the clamping plate, when the expansion plate is fixed, the electromagnet is energized to generate a repulsive force on the magnetic block, so that the clamping plate moves toward the fixed plate, so that the clamping plate is tightly attached to the arc surface, thereby clamping and fixing the fixed plate, thereby improving the fixing effect of the expansion plate and improving the impact resistance of the expansion plate.

Description

A device for adjusting the expansion angle of the wall panel of a wind tunnel test section

Technical Field

The invention belongs to the technical field of wind tunnel tests, and in particular relates to a device for adjusting the expansion angle of a wall panel in a wind tunnel test section.

Background Art

According to the patent document with the authorization announcement number "CN103487229B" and the invention name "A three-speed wind tunnel test section expansion angle adjustment mechanism", its description states: the thin elastic plate, the rigid section and the connecting section are integrally formed. The adjustment plate is processed from a whole piece of steel plate, and the wall thickness is reduced in the variable angle section to become an elastic plate. Reinforcing ribs are arranged on the connecting section and the rigid section to give it a certain rigidity, so that when the lifting mechanism drives the adjustment plate to move upward, only the thin elastic plate is deformed. In order to avoid deformation of the thin elastic plate due to gravity or airflow pressure, a hinge is set above the thin elastic plate to hold the rigid section and the connecting section together. The hinge shaft bears the gravity and airflow pressure loads. When the expansion angle adjustment mechanism is in the zero expansion position, the angle between the hinge and the vertical direction is 3 to 5 degrees to prevent jamming during the expansion angle adjustment process. However, the following defects still exist:

After the angle is adjusted, the elastic plate may be offset under the action of wind force, thus affecting the test results.

Summary of the invention

In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a wind tunnel test section wall panel expansion angle adjustment device, which effectively solves the problem of poor fixing effect and possible deviation after the angle of the elastic plate is adjusted.

To achieve the above-mentioned object, the present invention provides the following technical solutions: a device for adjusting the expansion angle of a wall panel of a wind tunnel test section, comprising a body, a first air outlet slot is arranged inside the body, a second air outlet slot is arranged inside the body, the width of the second air outlet slot is greater than the width of the first air outlet slot, and a wall panel mechanism is symmetrically installed inside the second air outlet slot;

The wall plate mechanism comprises a rigid plate fixedly mounted on the inner wall of the second air outlet slot near the machine body, an expansion plate is arranged on one side of the rigid plate, a rotating connection assembly is arranged between the rigid plate and the expansion plate, cylinders are symmetrically mounted on both sides of the machine body, the output end of the cylinder passes through the inner side of the second air outlet slot, a connecting rotating rod is arranged between the output end of the cylinder and the expansion plate, and rotating connection assemblies are arranged at both ends of the connecting rotating rod;

The rotating connection assembly includes a fixed plate, an arc surface is provided at the end of the fixed plate, a rotation groove is opened on the inner side of the fixed plate, the rotation groove and the arc surface are coaxially arranged, annular smooth surfaces are installed on the top wall and the bottom wall of the fixed plate, a fixed block is provided on the side of the fixed plate close to the arc surface, two side plates are symmetrically installed on one side of the fixed block, the two side plates are respectively arranged on the upper and lower sides of the fixed plate, a rotating shaft is installed between the two side plates, the rotating shaft is installed on the inner side of the rotation groove, a side wall clamping piece is installed inside the fixed block, a surface clamping piece is installed inside the side plate, and an inner clamping piece is installed inside the rotating shaft, and the side wall clamping piece, the surface clamping piece and the inner clamping piece together fix the expansion plate.

Preferably, the fixing plate is fixedly mounted on the end of the expansion plate and the two ends of the connecting rotating rod, and the fixing block is fixedly mounted on the surface of the rigid plate, the output end of the cylinder and the surface of the expansion plate.

Preferably, the side wall clamping member includes a first movable groove opened inside the fixed block, a first movable plate is movably installed inside the first movable groove, a pressure rod is fixedly installed on the side of the first movable plate close to the fixed plate, the end of the pressure rod passes through the side of the fixed block close to the fixed plate, a pressure plate is fixedly installed on the end of the pressure rod, and the curvature of the pressure plate is the same as the curvature of the curved surface.

Preferably, a first spring is symmetrically installed on one side of the first movable plate close to the fixed plate, one end of the first spring is fixedly connected to the inner wall of the first movable groove close to the fixed plate, a magnetic block is fixedly installed on the first movable plate, and an electromagnet is fixedly installed on the inner wall of the first movable groove away from the fixed plate.

Preferably, the surface pressing member includes a second movable groove opened inside the side plate, one end of the second movable groove is connected to the first movable groove, a plurality of longitudinal connecting grooves are opened on a side of the second movable groove close to the fixed plate, the longitudinal connecting grooves are arranged at equal angles on the outside of the rotating shaft, a second movable plate is movably installed inside the second movable groove, a wedge block is symmetrically installed on the top of the second movable plate, a pressure block is provided on the end of the wedge block close to the fixed block, the pressure block is fixedly installed on the first movable plate, when the first movable plate moves toward one side of the fixed plate, the pressure block generates pressure on the wedge block, pushing the second movable plate to move toward one side of the rotating shaft, guide cylinders are symmetrically provided on the side of the two side plates away from each other, a guide rod is movably installed inside the guide cylinder, one end of the guide rod is fixedly connected to the second movable plate, a second spring is fixedly installed on the other end of the guide rod, and one end of the second spring is fixedly connected to the inner wall of one end of the guide cylinder away from the side plate.

Preferably, a side plate is installed at an equal angle on the outer side of the second movable plate, a clamping block is provided on the side of the side plate close to the fixed plate, the clamping block is arranged inside the longitudinal connecting groove, one end of the clamping block contacts the surface of the fixed plate, a rod groove is opened at an equal angle inside the clamping block, a pressing rod is installed at an equal angle on the side of the side plate close to the pressing block, the end of the pressing rod is movably installed inside the rod groove, a third spring is fixedly installed on the end of the pressing rod, one end of the third spring is fixedly connected to the inner wall of one end of the rod groove close to the fixed plate, and a negative pressure fixing piece is installed inside the clamping block.

Preferably, the inner clamping member includes a third movable groove opened inside the rotating shaft, the two ends of the third movable groove are respectively connected with the two second movable grooves, and lateral connecting grooves are opened at equal angles on the middle outer wall of the rotating shaft, the lateral connecting groove is connected with the third movable groove, a friction plate is movably installed inside the lateral connecting groove, a cross bar is fixedly installed on the side of the friction plate close to the inside of the third movable groove, connecting rods are hinged on the upper and lower sides of the end of the cross bar, a connecting plate is fixedly installed on the side of the second movable plate close to the rotating shaft, the connecting plate is located inside the third movable groove, and the other end of the connecting rod is hinged to the connecting plate.

Preferably, the negative pressure fixing part includes a negative pressure groove opened inside the pressing block, one end of the negative pressure groove penetrates to one end of the pressing block close to the side plate, and the other end of the negative pressure groove is provided with a negative pressure hole, a piston is movably installed inside the negative pressure groove, the outer wall of the piston is in close contact with the inner wall of the negative pressure groove, a longitudinal plate is fixedly installed on the side of the piston close to the side plate, a plate groove is opened on the side plate, the longitudinal plate is located on the inner side of the plate groove, and the negative pressure hole corresponds to the annular smooth surface.

Preferably, the first tooth plates are symmetrically installed on both sides of the longitudinal plate, and the second tooth plates are symmetrically installed on the side of the side plate away from the clamping block. A gear is provided between the second tooth plate and the first tooth plate, and the gear is meshed with the second tooth plate and the first tooth plate. The gear is rotatably installed on the mounting frame, and the mounting frame is fixedly installed on the inner wall of the second movable groove away from the rotating shaft.

Compared with the prior art, the present invention has the following beneficial effects:

1) During operation, the fixed plate is rotatably connected to the rotating shaft, and the arc surface of the outer wall of the fixed plate has the same arc surface as the pressing plate. When the expansion plate is fixed, the electromagnet is energized to generate a repulsive force on the magnetic block, so that the pressing plate moves toward the fixed plate, so that the pressing plate is closely attached to the arc surface, thereby pressing and fixing the fixed plate, thereby improving the fixing effect of the expansion plate and improving the impact resistance of the expansion plate;

2) During operation, when the first movable plate moves toward the fixed plate, the pressure block generates pressure on the wedge block, pushing the second movable plate to move toward one side of the fixed plate, and the end of the pressing block contacts the surface of the fixed plate, so that after the second movable plate moves, the third spring is continuously compressed. Under the elastic force of the third spring, the pressing block presses and fixes the fixed plate, thereby improving the fixing effect of the expanded plate and improving the impact resistance of the expanded plate;

3) During operation, the side plate is arranged to move toward the fixed plate along with the second movable plate, the gear is driven to rotate through the second tooth plate, and then the piston is driven to move through the first tooth plate, so that negative pressure suction is generated between the negative pressure hole and the annular smooth surface, thereby improving the fixing effect of the expansion plate and improving the impact resistance of the expansion plate;

4) During operation, when the two second movable plates move toward one side of the rotating shaft, the friction plate is pushed to move along the lateral connecting groove toward the inner wall of the rotating groove through the rotation of the connecting rod, so that the friction plate and the inner wall of the rotating groove are pressed tightly, and then the fixed plate is pressed tightly under the friction force of the friction plate on the inner wall of the rotating groove, thereby further improving the fixing effect of the expansion plate and improving the impact resistance of the expansion plate.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

In the attached picture:

FIG1 is a schematic structural diagram of a wind tunnel test section wall panel expansion angle adjustment device according to the present invention;

FIG2 is a schematic diagram of the structure of a rotating connection assembly of the present invention;

FIG3 is a schematic diagram of the structure of the side wall pressing member of the present invention;

FIG4 is a schematic diagram of the structure of the inner pressing member of the present invention;

FIG5 is a schematic structural diagram of the first movable plate of the present invention;

FIG6 is a schematic diagram of the structure of a surface pressing member of the present invention;

FIG. 7 is a schematic diagram of the structure of the negative pressure fixing member of the present invention.

In the figure: 1, body; 2, first air outlet slot; 3, second air outlet slot; 4, rigid plate; 5, expansion plate; 6, rotating connection assembly; 601, fixed plate; 602, arc surface; 603, rotating slot; 604, annular smooth surface; 605, fixed block; 606, side plate; 607, rotating shaft; 608, side wall pressing member; 6081, first movable slot; 6082, first movable plate; 6083, pressure rod; 6084, pressing plate; 6085, first spring; 6086, magnetic block; 6087, electromagnet; 609, surface pressing member; 6091, second movable slot; 6092, longitudinal connecting slot; 6093, second movable plate; 6094, wedge block; 6095, pressing block; 6096, Guide cylinder; 6097, guide rod; 6098, second spring; 6099, side plate; 60910, clamping block; 60911, rod groove; 60912, pressing rod; 60913, third spring; 610, inner clamping member; 6101, third movable groove; 6102, connecting plate; 6103, lateral connecting groove; 6104, friction plate; 6105, cross bar; 6106, connecting rod; 611, negative pressure fixing member; 6111, negative pressure groove; 6112, negative pressure hole; 6113, piston; 6114, longitudinal plate; 6115, first tooth plate; 6116, plate groove; 6117, second tooth plate; 6118, gear; 6119, mounting bracket; 7, cylinder; 8, connecting rotating rod.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

Embodiment 1, as shown in FIGS. 1-7 , the present invention relates to a device for adjusting the expansion angle of a wall panel of a wind tunnel test section, comprising a body 1, a first air outlet slot 2 is provided inside the body 1, a second air outlet slot 3 is provided inside the body 1, the width of the second air outlet slot 3 is greater than the width of the first air outlet slot 2, and a wall panel mechanism is symmetrically installed inside the second air outlet slot 3;

The wall plate mechanism includes a rigid plate 4 fixedly mounted on the inner wall of the second air outlet slot 3 on one side close to the machine body 1, an expansion plate 5 is provided on one side of the rigid plate 4, a rotating connection assembly 6 is installed between the rigid plate 4 and the expansion plate 5, and cylinders 7 are symmetrically installed on both sides of the machine body 1, the output end of the cylinder 7 penetrates the inner side of the second air outlet slot 3, a connecting rod 8 is provided between the output end of the cylinder 7 and the expansion plate 5, and a rotating connection assembly 6 is installed at both ends of the connecting rod 8;

The rotating connection assembly 6 includes a fixed plate 601, an arc surface 602 is provided at the end of the fixed plate 601, a rotation groove 603 is provided on the inner side of the fixed plate 601, and the rotation groove 603 is coaxially arranged with the arc surface 602. An annular smooth surface 604 is installed on the top wall and the bottom wall of the fixed plate 601. A fixed block 605 is provided on the side of the fixed plate 601 close to the arc surface 602. Two side plates 606 are symmetrically installed on one side of the fixed block 605. The two side plates 606 are respectively arranged on the upper and lower sides of the fixed plate 601. A rotating shaft 607 is installed between the two side plates 606. The shaft 607 is installed on the inner side of the rotating groove 603, the inside of the fixed block 605 is installed with a side wall clamping piece 608, the inside of the side plate 606 is installed with a surface clamping piece 609, and the inside of the rotating shaft 607 is installed with an inner clamping piece 610. The side wall clamping piece 608, the surface clamping piece 609 and the inner clamping piece 610 together fix the expansion plate 5. The fixed plate 601 is fixedly installed on the end of the expansion plate 5 and the two ends of the connecting rotating rod 8. The fixed block 605 is fixedly installed on the surface of the rigid plate 4, the output end of the cylinder 7 and the surface of the expansion plate 5.

The side wall pressing member 608 includes a first movable groove 6081 opened inside the fixed block 605, a first movable plate 6082 is movably installed inside the first movable groove 6081, a pressure rod 6083 is fixedly installed on the side of the first movable plate 6082 close to the fixed plate 601, the end of the pressure rod 6083 penetrates to the side of the fixed block 605 close to the fixed plate 601, a pressing plate 6084 is fixedly installed on the end of the pressure rod 6083, the curvature of the pressing plate 6084 is the same as the curvature of the curved surface 602, a first spring 6085 is symmetrically installed on the side of the first movable plate 6082 close to the fixed plate 601, one end of the first spring 6085 is symmetrically installed with the first movable groove 6081 close to the fixed plate 601 The first movable plate 6082 is fixedly connected to the inner wall on one side, a magnetic block 6086 is fixedly installed on the first movable plate 6082, an electromagnet 6087 is fixedly installed on the inner wall on the side of the first movable groove 6081 away from the fixed plate 601, the fixed plate 601 is rotatably connected to the rotating shaft 607, and the arc surface 602 set on the outer wall of the fixed plate 601 has the same arc as the clamping plate 6084. When the expansion plate 5 is fixed, the electromagnet 6087 is energized to generate a repulsive force on the magnetic block 6086, so that the clamping plate 6084 moves toward the fixed plate 601, so that the clamping plate 6084 is tightly attached to the arc surface 602, thereby pressing and fixing the fixed plate 601, thereby improving the fixing effect of the expansion plate 5 and improving the impact resistance of the expansion plate 5.

The surface pressing member 609 includes a second movable groove 6091 provided inside the side plate 606, one end of the second movable groove 6091 is connected to the first movable groove 6081, a plurality of longitudinal connecting grooves 6092 are provided on the side of the second movable groove 6091 close to the fixed plate 601, and the longitudinal connecting grooves 6092 are provided at equal angles on the outside of the rotating shaft 607, a second movable plate 6093 is movably installed inside the second movable groove 6091, a wedge block 6094 is symmetrically installed on the top of the second movable plate 6093, a pressing block 6095 is provided on one end of the wedge block 6094 close to the fixed block 605, and the pressing block 6095 is fixedly installed on the first movable plate 6082, the first When the movable plate 6082 moves toward the fixed plate 601, the pressing block 6095 exerts pressure on the wedge block 6094, pushing the second movable plate 6093 to move toward the rotating shaft 607. The two side plates 606 are symmetrically provided with guide cylinders 6096 on the side away from each other. A guide rod 6097 is movably installed inside the guide cylinder 6096. One end of the guide rod 6097 is fixedly connected to the second movable plate 6093. The other end of the guide rod 6097 is fixedly installed with a second spring 6098. One end of the second spring 6098 is fixedly connected to the inner wall of the end of the guide cylinder 6096 away from the side plate 606. The outer side of the second movable plate 6093 is provided with side parts at equal angles. The plate 6099 is provided with a pressing block 60910 on one side of the side plate 6099 near the fixed plate 601. The pressing block 60910 is arranged inside the longitudinal connecting groove 6092. One end of the pressing block 60910 contacts the surface of the fixed plate 601. A rod groove 60911 is provided at an equal angle inside the pressing block 60910. A pressing rod 60912 is installed at an equal angle on one side of the side plate 6099 near the pressing block 60910. The end of the pressing rod 60912 is movably installed inside the rod groove 60911. A third spring 60913 is fixedly installed on the end of the pressing rod 60912. One end of the third spring 60913 is connected to the rod groove 60911 near the fixed plate 601. One end of the plate 601 is fixedly connected to the inner wall, and a negative pressure fixing part 611 is installed inside the clamping block 60910. When the first movable plate 6082 moves toward the fixed plate 601, pressure is generated on the wedge block 6094 through the clamping block 6095, pushing the second movable plate 6093 to move toward the side of the fixed plate 601, and the end of the clamping block 60910 contacts the surface of the fixed plate 601, so that after the second movable plate 6093 moves, the third spring 60913 is continuously compressed. Under the elastic force of the third spring 60913, the clamping block 60910 presses and fixes the fixed plate 601, thereby improving the fixing effect of the expansion plate 5 and improving the impact resistance of the expansion plate 5.

The inner pressing member 610 includes a third movable groove 6101 provided inside the rotating shaft 607, the two ends of the third movable groove 6101 are respectively connected to the two second movable grooves 6091, a lateral connecting groove 6103 is provided at an equal angle on the middle outer wall of the rotating shaft 607, the lateral connecting groove 6103 is connected to the third movable groove 6101, a friction plate 6104 is movably installed inside the lateral connecting groove 6103, a cross bar 6105 is fixedly installed on one side of the friction plate 6104 close to the inside of the third movable groove 6101, and the upper and lower sides of the end of the cross bar 6105 are hinged with connecting rods 6106, and the second movable plate 609 A connecting plate 6102 is fixedly installed on one side close to the rotating shaft 607. The connecting plate 6102 is located inside the third movable groove 6101. The other end of the connecting rod 6106 is hinged to the connecting plate 6102. The side plate 6099 moves toward the fixed plate 601 along with the second movable plate 6093, and the gear 6118 is driven to rotate through the second tooth plate 6117, and then the piston 6113 is driven to move through the first tooth plate 6115, which inserts the side plate 6099, so that negative pressure suction is generated between the negative pressure hole 6112 and the annular smooth surface 604, thereby improving the fixing effect of the expansion plate 5 and improving the impact resistance of the expansion plate 5.

The negative pressure fixing member 611 includes a negative pressure groove 6111 opened inside the pressing block 60910, one end of the negative pressure groove 6111 penetrates to the end of the pressing block 60910 close to the side plate 6099, and the other end of the negative pressure groove 6111 is provided with a negative pressure hole 6112, a piston 6113 is movably installed inside the negative pressure groove 6111, the outer wall of the piston 6113 is in close contact with the inner wall of the negative pressure groove 6111, a longitudinal plate 6114 is fixedly installed on the side of the piston 6113 close to the side plate 6099, a plate groove 6116 is opened on the side plate 6099, the longitudinal plate 6114 is located on the inner side of the plate groove 6116, the negative pressure hole 6112 corresponds to the annular smooth surface 604, first tooth plates 6115 are symmetrically installed on both sides of the longitudinal plate 6114, and second tooth plates 6115 are symmetrically installed on the side of the side plate 6099 away from the pressing block 60910 A gear 6118 is provided between the tooth plate 6117, the second tooth plate 6117 and the first tooth plate 6115, the gear 6118 is meshed with the second tooth plate 6117 and the first tooth plate 6115, the gear 6118 is rotatably mounted on the mounting frame 6119, and the mounting frame 6119 is fixedly mounted on the inner wall of the second movable groove 6091 away from the rotating shaft 607. When the two second movable plates 6093 move toward the side of the rotating shaft 607, the friction plate 6104 is pushed to move along the lateral connecting groove 6103 toward the inner wall of the rotating groove 603 through the rotation of the connecting rod 6106, so that the friction plate 6104 is pressed against the inner wall of the rotating groove 603, and then under the friction force of the friction plate 6104 on the inner wall of the rotating groove 603, the fixed plate 601 is pressed, thereby further improving the fixing effect of the expansion plate 5 and improving the impact resistance of the expansion plate 5.

Working principle: When the expansion angle of the expansion plate 5 needs to be adjusted, the cylinders 7 on both sides are turned on at the same time, and the expansion plate 5 is driven to rotate around the rotation axis 607 by the movement of the output shaft of the cylinder 7 and the rotation of the connecting rod 8, so as to adjust the angle. After the angle is adjusted, if the fixing stability of the expansion plate 5 is not good, the expansion plate 5 may rotate under the action of wind during the test, affecting the test;

Therefore, when the expansion plate 5 needs to be fixed, the electromagnet 6087 in the fixed block 605 is energized, and the electromagnet 6087 generates a repulsive force on the magnetic block 6086 after being energized, pushing the first movable plate 6082 to move toward the fixed plate 601. Since the curvature of the pressing plate 6084 is the same as the curvature of the arc surface 602, the pressing plate 6084 is in close contact with the surface of the arc surface 602, and the fixed plate 601 is pressed, so that the fixed plate 601 and the rotating shaft 607 are fixed under the action of friction, thereby pressing and fixing the expansion plate 5;

When the first movable plate 6082 moves toward the fixed plate 601, the pressing block 6095 is driven to generate pressure on the wedge block 6094, thereby pushing the second movable plate 6093 to move toward the fixed plate 601. Since the end surface of the pressing block 60910 is in contact with the surface of the fixed plate 601, the third spring 60913 is compressed. Under the elastic force of the third spring 60913, the friction between the pressing block 60910 and the fixed plate 601 is increased, so that the pressing block 60910 presses the fixed plate 601, thereby improving the fixing effect of the expansion plate 5.

Since the negative pressure hole 6112 is in contact with the annular smooth surface 604 on the fixed plate 601, when the side plate 6099 moves toward the side of the pressing block 60910, the gear 6118 is driven to rotate through the second tooth plate 6117, and then the piston 6113 is driven to move toward the side of the side plate 6099 through the longitudinal plate 6114, so that negative pressure suction is generated between the negative pressure hole 6112 and the annular smooth surface 604, thereby further fixing the fixed plate 601, and further fixing the expansion plate 5;

When the upper and lower second movable plates 6093 move toward the side of the fixed plate 601, the connecting rod 6106 rotates to push each friction plate 6104 to move outward along the lateral connecting groove 6103, so that the friction plate 6104 is tightly attached to the inner wall of the rotating groove 603, and under the friction resistance of the friction plate 6104 to the rotating groove 603, the fixed plate 601 is pressed and fixed, and the expansion plate 5 is further fixed.

It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. The utility model provides a wind tunnel test section wallboard expands angle adjusting device, includes organism (1), its characterized in that: the novel air conditioner is characterized in that a first air outlet groove (2) is formed in the machine body (1), a second air outlet groove (3) is formed in the machine body (1), the width of the second air outlet groove (3) is larger than that of the first air outlet groove (2), and wallboard mechanisms are symmetrically arranged in the second air outlet groove (3);

The wallboard mechanism comprises a rigid plate (4) fixedly installed on the inner wall of one side of the second air outlet groove (3) close to the machine body (1), an expansion plate (5) is arranged on one side of the rigid plate (4), a rotary connecting assembly (6) is installed between the rigid plate (4) and the expansion plate (5), air cylinders (7) are symmetrically installed on two sides of the machine body (1), the output ends of the air cylinders (7) penetrate through the inner side of the second air outlet groove (3), a connecting rotating rod (8) is arranged between the output ends of the air cylinders (7) and the expansion plate (5), and the rotary connecting assemblies (6) are installed at two ends of the connecting rotating rod (8);

the rotary connecting assembly (6) comprises a fixed plate (601), wherein an arc surface (602) is arranged at the end part of the fixed plate (601), a rotary groove (603) is formed in the inner side of the fixed plate (601), the rotary groove (603) and the arc surface (602) are coaxially arranged, annular smooth surfaces (604) are respectively arranged on the top wall and the bottom wall of the fixed plate (601), a fixed block (605) is arranged on one side, close to the arc surface (602), of the fixed plate (601), two side plates (606) are symmetrically arranged on one side of the fixed block (605), the two side plates (606) are respectively arranged on the upper side and the lower side of the fixed plate (601), a rotary shaft (607) is arranged between the two side plates (606), the rotary shaft (607) is arranged on the inner side of the rotary groove (603), side wall pressing pieces (608) are arranged in the fixed block (605), surface pressing pieces (609) are arranged in the inner side wall pressing pieces (608), and the side wall pressing pieces (608) and the inner side pressing pieces (610) play a role of fixing the expansion plate (5) together;

the side wall pressing piece (608) comprises a first movable groove (6081) which is formed in the fixing block (605), a first movable plate (6082) is movably mounted in the first movable groove (6081), a pressing rod (6083) is fixedly mounted on one side, close to the fixing plate (601), of the first movable plate (6082), the end portion of the pressing rod (6083) penetrates through one side, close to the fixing plate (601), of the fixing block (605), a pressing plate (6084) is fixedly mounted on the end portion of the pressing rod (6083), and the radian of the pressing plate (6084) is identical to that of the cambered surface (602);

First spring (6085) is installed to one side symmetry that first fly leaf (6082) is close to fixed plate (601), and one end and first movable groove (6081) of first spring (6085) are close to one side inner wall fixed connection of fixed plate (601), and fixed mounting has magnetic path (6086) on first fly leaf (6082), and fixed mounting has electro-magnet (6087) on one side inner wall that fixed plate (601) was kept away from to first movable groove (6081).

2. The wind tunnel test section wallboard expansion angle adjusting device according to claim 1, wherein: the fixed plate (601) is fixedly arranged at the end part of the expansion plate (5) and two ends of the connecting rotating rod (8), and the fixed block (605) is fixedly arranged on the surface of the rigid plate (4), the end part of the output end of the air cylinder (7) and the surface of the expansion plate (5).

3. The wind tunnel test section wallboard expansion angle adjusting device according to claim 1, wherein: the surface pressing piece (609) comprises a second movable groove (6091) arranged in the side plate (606), one end of the second movable groove (6091) is communicated with the first movable groove (6081), one side of the second movable groove (6091) close to the fixed plate (601) is provided with a plurality of longitudinal communication grooves (6092), the longitudinal communication grooves (6092) are arranged on the outer side of the rotating shaft (607) at equal angles, the second movable plate (6093) is movably arranged in the second movable groove (6091), the top end of the second movable plate (6093) is symmetrically provided with a wedge block (6094), one end of the wedge block (6094) close to the fixed block (605) is provided with a pressing block (6095), the pressing block (6095) is fixedly arranged on the first movable plate (6082), when the first movable plate (6082) moves towards one side of the fixed plate (601), the pressing block (6095) generates pressure on the wedge block (6094) to push one side of the rotating shaft (6093), one side of the two side plates (606) is movably provided with a second movable plate (6093), one side of the two sides of the side plates (606) are mutually far away from each other, one side of the second movable plate (6096) is symmetrically provided with a guide cylinder (6096), one end of the second movable guide cylinder (6097) is fixedly arranged on the other end of the second movable cylinder (6097) is fixedly connected with the second guide cylinder (6097), one end of the second spring (6098) is fixedly connected with the inner wall of one end of the guide cylinder (6096) far away from the side plate (606).

4. A wind tunnel test section panel expansion angle adjustment device according to claim 3, wherein: the side plate (6099) is installed to the outside equiangle of second fly leaf (6093), side plate (6099) is close to fixed plate (601) forehead one side and is equipped with compact heap (60910), inside longitudinal communication groove (6092) is located to compact heap (60910), one end and fixed plate (601) surface contact of compact heap (60910), pole groove (60911) have been seted up to the inside equiangle of compact heap (60910), side plate (6099) is close to one side equiangle of compact heap (60910) and installs pressure action pole (60912), the tip movable mounting of pressure action pole (60912) is in the inside of pole groove (60911), the tip fixed mounting of pressure action pole (60912) has third spring (60913), the one end of third spring (60913) is close to one end inner wall fixed connection of fixed plate (601) with pole groove (60911), the internally mounted of compact heap (60910) has negative pressure mounting (611).

5. A wind tunnel test section panel expansion angle adjustment device according to claim 3, wherein: the inside clamping piece (610) is including seting up in the inside third movable groove (6101) of pivot (607), the both ends of third movable groove (6101) are linked together with two second movable grooves (6091) respectively, lateral direction intercommunication groove (6103) have been seted up to equiangle on the middle part outer wall of pivot (607), lateral direction intercommunication groove (6103) are linked together with third movable groove (6101), the inside movable mounting of lateral direction intercommunication groove (6103) has friction plate (6104), one side fixed mounting that friction plate (6104) is close to the inside of third movable groove (6101) has horizontal pole (6105), both sides all articulate have connecting rod (6106) about the tip of horizontal pole (6105), one side fixed mounting that second movable plate (6093) is close to pivot (607) has connecting plate (6102), connecting plate (6102) are located the inside of third movable groove (6101), the other end and connecting plate (6102) are articulated.

6. The wind tunnel test section wallboard expansion angle adjusting device according to claim 4, wherein: negative pressure mounting (611) is including opening in the inside negative pressure groove (6111) of compact heap (60910), the one end in negative pressure groove (6111) runs through to the one end that compact heap (60910) is close to lateral plate (6099), negative pressure hole (6112) have been seted up to the other end in negative pressure groove (6111), piston (6113) are installed to the inside movable of negative pressure groove (6111), the outer wall and the inner wall in negative pressure groove (6111) of piston (6113) are hugged closely, one side that piston (6113) is close to lateral plate (6099) fixed mounting has vertical board (6114), board groove (6116) have been seted up on lateral plate (6099), vertical board (6114) are located board groove (6116) inboard, negative pressure hole (6112) are corresponding with annular smooth surface (604).

7. The wind tunnel test section wall plate expansion angle adjusting device according to claim 6, wherein: the two sides of the longitudinal plate (6114) are symmetrically provided with a first toothed plate (6115), one side of the side plate (6099) away from the compaction block (60910) is symmetrically provided with a second toothed plate (6117), a gear (6118) is arranged between the second toothed plate (6117) and the first toothed plate (6115), the gear (6118) is meshed with the second toothed plate (6117) and the first toothed plate (6115), the gear (6118) is rotatably arranged on the mounting frame (6119), and the mounting frame (6119) is fixedly arranged on the inner wall of one side of the second movable groove (6091) away from the rotating shaft (607).