CN115008385B - Auxiliary installation positioning mechanism for side wall of wind tunnel boundary layer and application method thereof - Google Patents

Abstract

A wind tunnel boundary layer side wall auxiliary installation and positioning mechanism and its use method belong to the field of positioning mechanisms. It includes an auxiliary device I, an auxiliary device II, a limiting device and a positioning device; the auxiliary device I is set on a fixed concrete slab, the auxiliary device II is set on the upper end of the pre-installed concrete slab, and the upper end of the auxiliary device II is limited. positioning device; the positioning device is fixedly connected to the upper end of the auxiliary device I, and the limiting device is sleeved on the positioning device. The invention can not only assist in the installation and positioning of concrete slabs, but also assist in the installation of the oblique side walls of the acceleration section in the wind tunnel. Finally, it can also test the flatness of the inner wall of the wind tunnel to avoid affecting the use of the wind tunnel.

Description

A kind of wind tunnel boundary layer side wall auxiliary installation and positioning mechanism and its use method

Technical field

The invention relates to an auxiliary installation and positioning mechanism for the side wall of a wind tunnel boundary layer and a method of using the same, and belongs to the field of positioning mechanisms.

Background technique

A wind tunnel is a wind tunnel laboratory. It is a pipe-like experimental equipment that artificially generates and controls airflow to simulate the flow of gas around an aircraft or entity. It can also measure the effect of airflow on entities and observe physical phenomena. , it is one of the most commonly used and effective tools for conducting aerodynamic experiments.

Depending on the experiment, the size of the wind tunnel is also different. When installing a larger wind tunnel, the concrete slab needs to be lifted by lifting equipment before installation. Especially when installing the acceleration section of the wind tunnel, the side walls of the acceleration section need to be Incline setting, when the angle of inclination is adjusted, if the crane operation error occurs and the angle is displaced in the horizontal direction, the angle needs to be readjusted, which is very troublesome, and the inner wall of the wind tunnel needs to ensure that the wind energy passes smoothly and evenly, so the wind tunnel needs to be observed after the installation is completed. Whether the inner wall is flat, a positioning mechanism is needed to assist installation.

Contents of the invention

The purpose of the present invention is to solve the above-mentioned problems existing in the background technology and provide an auxiliary installation and positioning mechanism for the boundary layer side wall of a wind tunnel and a method of using the same.

The present invention achieves the above object and adopts the following technical solutions:

An auxiliary installation and positioning mechanism for the boundary layer side wall of a wind tunnel, including an auxiliary device I, an auxiliary device II, a limiting device and a positioning device; the auxiliary device I is set on a fixed concrete slab, and the auxiliary device II is set on a pre-installed The upper end of the concrete slab and the upper end of the auxiliary device II are provided with a limiting device; the positioning device is fixedly connected to the upper end of the auxiliary device I, and the limiting device is sleeved on the positioning device.

A method of using an auxiliary installation and positioning mechanism on the boundary layer side wall of a wind tunnel. The method includes the following steps:

Step 1: Place U-shaped plate I and U-shaped plate II on the upper end of the corresponding concrete slab;

Step 2: Turn the bolts I and II, and push the splints I and II against the side wall of the concrete slab;

Step 3: Place the chute on the slide block, and then lift the pre-installed concrete slab to the predetermined position using a crane;

Step 4: When placing the concrete slab downwards, put the round hole on the outside of the rotating drum and insert the clamping block into the slideway I;

Step 5: Use the crane to slowly rotate the concrete slab until it reaches the predetermined angle, and then stop rotating;

Step 6: Turn the polygonal knob to make the screw push the auxiliary device II to move, and finally place the concrete slab on the bottom through the crane.

Compared with the existing technology, the beneficial effects of the present invention are: the present invention can not only assist the installation and positioning of concrete slabs, but also assist the installation of the oblique side walls of the acceleration section in the wind tunnel, and finally can also assist the inner wall of the wind tunnel. Test the flatness to avoid affecting the use of the wind tunnel.

Description of the drawings

Figure 1 is a front view of a wind tunnel boundary layer side wall auxiliary installation and positioning mechanism installed on a concrete slab according to the present invention;

Figure 2 is a top view of a wind tunnel boundary layer side wall auxiliary installation and positioning mechanism installed on a concrete slab according to the present invention;

Figure 3 is a front view of an auxiliary installation and positioning mechanism for the wind tunnel boundary layer side wall of the present invention;

Figure 4 is a side view of the auxiliary device I of the wind tunnel boundary layer side wall auxiliary installation and positioning mechanism of the present invention;

Figure 5 is a side view of the auxiliary device II of the wind tunnel boundary layer side wall auxiliary installation and positioning mechanism of the present invention;

Figure 6 is a front view of the limiting device of the auxiliary installation and positioning mechanism of the wind tunnel boundary layer side wall of the present invention;

Figure 7 is a cross-sectional view of a positioning device of the wind tunnel boundary layer side wall auxiliary installation positioning mechanism of the present invention.

Detailed ways

The technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the invention, rather than all of the embodiments. Based on the present invention, All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

Specific Embodiment 1: As shown in Figures 1-7, this embodiment describes an auxiliary installation and positioning mechanism for the wind tunnel boundary layer side wall, including an auxiliary device I1, an auxiliary device II2, a limiting device 3 and a positioning device 4; so The auxiliary device I1 is set on the fixed concrete slab 5, the auxiliary device II2 is set on the upper end of the pre-installed concrete slab 5, and the upper end of the auxiliary device II2 is provided with a limiting device 3; the positioning device 4 is fixedly connected to the auxiliary device I1 The upper end, and the limiting device 3 is placed on the positioning device 4.

Specific Embodiment 2: As shown in Figures 1-7, this embodiment is a further explanation of Specific Embodiment 1. The auxiliary device I1 includes a U-shaped plate I11, a plurality of bolts I12, a plurality of springs I13, a plurality of The splint I14 and the support plate I111; the U-shaped plate I11 is set with its opening facing downwards and the U-shaped plate I11 is placed on the upper end of the fixed concrete slab 5. There are multiple threaded holes on both sides of the U-shaped plate I11; the U-shaped plate I11 is provided with a plurality of threaded holes on both sides. A spring I13 is fixedly connected to the inner opposite surface of the shaped plate I11, and the other end of the spring I13 is fixedly connected to a corresponding splint I14; the bolt I12 is threadedly connected to the corresponding threaded hole, and the corresponding splint I14 is pressed against the fixed The side of the concrete slab 5; the support plate I111 is fixedly connected to the top of the outer side of the U-shaped plate I11.

Specific Embodiment 3: As shown in Figures 1-7, this embodiment is a further explanation of Specific Embodiment 1. The auxiliary device II2 includes a U-shaped plate II21, a plurality of bolts II22, a plurality of springs II23, a plurality of The plywood II 24, the support plate II 25 and the slider 26; the U-shaped plate II 21 is arranged with the mouth facing downwards and the U-shaped plate II 21 is placed on the upper end of the pre-installed concrete slab 5. A plurality of screws are provided on both sides of the U-shaped plate II 21. hole; a spring II 23 is fixedly connected to the inner opposite surface of the U-shaped plate II 21, and the other end of the spring II 23 is fixedly connected to a corresponding splint II 24; the bolt II 22 is threadedly connected to the corresponding screw hole, and the corresponding splint II 24 It rests against the side of the pre-installed concrete slab 5; the support plate II25 is fixedly connected to the top of the outer side of the U-shaped plate II21, and the upper end of the support plate II25 is fixedly connected with a slider 26.

Specific Embodiment 4: As shown in Figures 1-7, this embodiment is a further explanation of Specific Embodiment 1. The limiting device 3 includes a connecting plate 31, a clamping block 32, a screw 35 and a polygonal knob 36; so A chute 34 is provided on the lower end surface of the connecting plate 31, and a screw rod 35 is threadedly connected to the side of the connecting plate 31. One end of the screw rod 35 passes through the connecting plate 31 and is arranged in the chute 34. The other end of the screw rod 35 is fixedly connected. There is a polygonal knob 36; the slider 26 is slidingly matched with the slide groove 34; the connecting plate 31 is provided with a circular hole 33 vertically penetrating the connecting plate 31, and a blocking block 32 is fixedly connected to the inner wall of the circular hole 33.

Specific Embodiment 5: As shown in Figures 1-7, this implementation is a further explanation of Specific Embodiment 1. The slider 26 is a rectangular block.

Specific Embodiment 6: As shown in Figures 1-7, this embodiment is a further explanation of Specific Embodiment 1. The positioning device 4 includes a rotating cylinder 43 and a fixed cylinder 45; the fixed cylinder 45 is fixedly connected to the support. The upper end of plate I111; the rotating drum 43 is sleeved on the outside of the fixed drum 45, and the outer circumferential surface of the rotating drum 43 is provided with a slideway I42 parallel to the axial direction, and the rotating drum 43 is in sliding fit with the circular hole 33, and The clamping block 32 is in sliding fit with the slideway I42.

Specific Embodiment 7: As shown in Figures 1-7, this embodiment is a further explanation of Specific Embodiment 1. The positioning device 4 also includes a screw cap 41 and a limiting rod 47; the inner wall of the rotating drum 43 The fixed cylinder 45 is provided with a slideway II 44 parallel to the axial direction, and the fixed cylinder 45 is provided with a spiral groove 46 that penetrates the cylinder wall; the limiting rod 47 is in sliding fit with the slideway II44 and the spiral groove 46; the screw cap 41 There are two threaded grooves with different depths, and the two threaded grooves are threadedly connected to the rotating drum 43 and the fixed drum 45 respectively.

Specific Embodiment 8: As shown in Figures 1-7, this embodiment is a further explanation of Specific Embodiment 1. The auxiliary device I1 also includes a round rod I15, a fixed shaft 16, a round rod II17, a connecting rod 19 and Nut 110; the top of the U-shaped plate I11 is provided with a slideway III18; the connecting rod 19 is located in the slideway III18, and the upper end of the connecting rod 19 is connected with the nut 110 through threads, and the lower end of the connecting rod 19 is fixedly connected with a round nut 110. Rod II17; a fixed shaft 16 is fixedly connected to the inner top wall of the U-shaped plate I11; the round rod I15 is sleeved on the fixed shaft 16 through a bearing; the length of the U-shaped plate I11 is equal to the height of the concrete slab 5.

Specific Embodiment 9: As shown in Figures 1-7, this embodiment is a further explanation of Specific Embodiment 1. When the splint I14 is close to the side wall of the concrete slab 5, the round rods I15 and II17 are located Between the corresponding splint I14 and the inner wall of the U-shaped plate I11.

Specific Embodiment 10: As shown in Figures 1-7, this embodiment records a method of using an auxiliary installation and positioning mechanism on the boundary layer side wall of a wind tunnel. The method includes the following steps:

Step 1: Place the U-shaped plate I11 and the U-shaped plate II21 on the upper ends of the corresponding concrete slabs 5;

Step 2: Turn the bolts I12 and II22, and push the splints I14 and II24 against the side wall of the concrete slab 5;

Step 3: Place the chute 34 on the slide block 26, and then lift the pre-installed concrete slab 5 to the predetermined position by a crane;

Step 4: When placing the concrete slab 5 downward, put the round hole 33 on the outside of the rotating drum 43, and insert the clamping block 32 into the slideway I42;

Step 5: Slowly rotate the concrete slab 5 by the crane until it reaches the predetermined angle, and then stop rotating;

Step 6: Turn the polygonal knob 36 to make the screw 35 push the auxiliary device II2 to move, and finally place the concrete slab 5 on the bottom through the crane.

The working principle of the present invention is: place the U-shaped plate I11 on the fixed concrete slab 5, and place the U-shaped plate II21 on the upper end of the pre-installed concrete slab 5; rotate the bolt I12 and the bolt II22 to make the bolt I12 and the bolt II22 respectively Move in the direction of the concrete slab 5 against the plywood I14 and the plywood II24, and finally press against the side wall of the corresponding concrete slab 5;

Put the chute 34 on the slide block 26, and then lift the pre-installed concrete slab 5 to a predetermined position by a crane. When the concrete slab 5 is lifted, the auxiliary device II2 installed on its upper end also moves with it;

After placing the lifted concrete slab 5 downward to a certain height from the bottom, put the limiting device 3 on the positioning device 4, that is, put the round hole 33 on the outside of the rotating drum 43, and insert the clamping block 32 into the slideway I42 ;

Then the concrete slab 5 is slowly rotated by the crane. Since the concrete slab 5 is at a certain distance from the bottom surface, it will not rub against the bottom surface. After the connecting plate 31 is put on the rotating drum 43 through the round hole 33, the connecting plate 31 is located on the rotating drum 43. In the middle position, during the rotation of the crane, the concrete slab 5 is driven to rotate, and then the concrete slab 5 drives the auxiliary device II2 at its upper end to rotate. The slider 26 at the upper end of the auxiliary device II2 drives the connecting plate 31 around the rotating drum 43 through the chute 34. During rotation, the connecting plate 31 drives the rotating drum 43 to rotate through the blocking block 32. The rotation of the rotating drum 43 drives the limiting rod 47 to rotate through the slideway II 44. Since the fixed cylinder 45 is fixed, the rotating cylinder 43 and the fixed cylinder 45 Relative rotation, the limit rod 47 moves in the spiral groove 46 and moves downward along the slideway II 44 until it reaches the predetermined angle, close the crane and stop rotating; then connect the screw cap 41 to the rotating drum 43 and the fixed drum through threads The upper end of 45 prevents the rotating drum 43 from rotating relative to the fixed drum 45, thereby limiting the rotation of the connecting plate 31, which can avoid the problem of the angle needing to be readjusted due to crane operation errors;

After the angle adjustment is completed, the polygonal knob 36 is turned by the tool, and the polygonal knob 36 drives the screw 35 to rotate, so that the screw 35 comes into contact with the slider 26, and the slider 26 pushes the auxiliary device II2 to move, and the auxiliary device II2 drives the pre-installed concrete. The plate 5 moves in the direction of the fixed concrete plate 5, and at the same time, the crane drives the pre-installed concrete plate 5 to move downward, so that when the lower end of the pre-installed concrete plate 5 is in contact with the bottom surface, its side is also in contact with the fixed concrete plate 5. The concrete slab 5 is in contact, and then the two are fixed;

After the fixation is completed, remove the auxiliary device II2 and the limiting device 3, and then rotate the bolt I12 to make the clamping plate I14 move toward the U-shaped plate I11 under the action of the spring 13, and then place the round rod I15 against the concrete slab 5 on the inner wall of the concrete slab 5, and then push the round rod II17 to make it lean against the outer wall of the concrete slab 5, and then fix it with the nut 110, and finally push the auxiliary device I1 in the direction of the connection of the two concrete slabs 5. When there is a bulge at the connection, since the distance between round rod I15 and round rod II17 is fixed, the auxiliary device I1 will not be able to push. Then use grinding equipment to polish it until the auxiliary device I1 can pass through this place; pass Through the above steps, after the connection of the two concrete slabs 5 is completed, the flatness test of the arc-shaped inner wall of the connection can be carried out to ensure that it can be processed in time.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention can be implemented in other forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be regarded as illustrative and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is therefore intended that all claims falling within the claims All changes within the meaning and range of equivalents are encompassed by the present invention. Any reference signs in the claims shall not be construed as limiting the claim in question.

In addition, it should be understood that although this specification is described in terms of implementations, not each implementation only contains an independent technical solution. This description of the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole. , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (5)

1. The utility model provides a wind tunnel boundary layer lateral wall auxiliary installation positioning mechanism which characterized in that: comprises an auxiliary device I (1), an auxiliary device II (2), a limiting device (3) and a positioning device (4); the auxiliary device I (1) is arranged on the fixed concrete slab (5), the auxiliary device II (2) is arranged at the upper end of the pre-installed concrete slab (5), and the upper end of the auxiliary device II (2) is provided with a limiting device (3); the positioning device (4) is fixedly connected to the upper end of the auxiliary device I (1), and the limiting device (3) is sleeved on the positioning device (4);

the auxiliary device I (1) comprises a U-shaped plate I (11), a plurality of bolts I (12), a plurality of springs I (13), a plurality of clamping plates I (14) and a supporting plate I (111); the U-shaped plate I (11) is downwards arranged in an opening manner, the U-shaped plate I (11) is placed at the upper end of the fixed concrete slab (5), and a plurality of threaded holes are formed in two sides of the U-shaped plate I (11); a spring I (13) is fixedly connected to the opposite surface of the inner side of the U-shaped plate I (11), and the other end of the spring I (13) is fixedly connected with a corresponding clamping plate I (14); the bolts I (12) are in threaded connection with the corresponding threaded holes, and the corresponding clamping plates I (14) are abutted against the side surfaces of the fixed concrete plates (5); the supporting plate I (111) is fixedly connected to the top end of the outer side surface of the U-shaped plate I (11);

the auxiliary device II (2) comprises a U-shaped plate II (21), a plurality of bolts II (22), a plurality of springs II (23), a plurality of clamping plates II (24), a supporting plate II (25) and a sliding block (26); the U-shaped plate II (21) is arranged downwards near the opening, the U-shaped plate II (21) is placed at the upper end of the pre-installed concrete slab (5), and a plurality of screw holes are formed in two sides of the U-shaped plate II (21); a spring II (23) is fixedly connected to the opposite surface of the inner side of the U-shaped plate II (21), and the other end of the spring II (23) is fixedly connected with a corresponding clamping plate II (24); the bolts II (22) are in threaded connection with the corresponding screw holes, and the corresponding clamping plates II (24) are propped against the side surface of the pre-installed concrete slab (5); the support plate II (25) is fixedly connected to the top end of the outer side surface of the U-shaped plate II (21), and the upper end of the support plate II (25) is fixedly connected with a sliding block (26);

the limiting device (3) comprises a connecting plate (31), a clamping block (32), a screw (35) and a polygonal knob (36); a chute (34) is formed in the lower end face of the connecting plate (31), a screw (35) is connected to the side face of the connecting plate (31) through threads, one end of the screw (35) penetrates through the connecting plate (31) and is arranged in the chute (34), and a polygonal knob (36) is fixedly connected to the other end of the screw (35); the sliding block (26) is in sliding fit with the sliding groove (34); a round hole (33) vertically penetrating through the connecting plate (31) is formed in the connecting plate (31), and a clamping block (32) is fixedly connected to the inner wall of the round hole (33);

the positioning device (4) comprises a rotary drum (43) and a fixed drum (45); the fixed cylinder (45) is fixedly connected to the upper end of the supporting plate I (111); the rotary drum (43) is sleeved on the outer side of the fixed drum (45), a slide way I (42) parallel to the axial direction is arranged on the outer circular surface of the rotary drum (43), the rotary drum (43) is in sliding fit with the round hole (33), and the clamping block (32) is in sliding fit with the slide way I (42);

the positioning device (4) further comprises a spiral cover (41) and a limiting rod (47); a slide way II (44) parallel to the axial direction is arranged on the inner wall of the rotary drum (43), and a spiral groove (46) penetrating through the wall of the fixed drum (45) is arranged on the fixed drum; the limiting rod (47) is in sliding fit with the slide way II (44) and the spiral groove (46); the screw cap (41) is provided with two screw grooves with different depths, and the two screw grooves are respectively in threaded connection with the rotary drum (43) and the fixed drum (45).

2. The wind tunnel boundary layer sidewall aided mounting and positioning mechanism of claim 1, wherein: the slider (26) is a rectangular block.

3. The wind tunnel boundary layer sidewall aided mounting and positioning mechanism of claim 2, wherein: the auxiliary device I (1) further comprises a round rod I (15), a fixed shaft (16), a round rod II (17), a connecting rod (19) and a nut (110); a slideway III (18) is arranged at the top end of the U-shaped plate I (11); the connecting rod (19) is positioned in the slideway III (18), the upper end of the connecting rod (19) is connected with a nut (110) through threads, and the lower end of the connecting rod (19) is fixedly connected with a round rod II (17); the fixed shaft (16) is fixedly connected to the inner top wall of the U-shaped plate I (11); the round rod I (15) is sleeved on the fixed shaft (16) through a bearing; the length of the U-shaped plate I (11) is equal to the height of the concrete slab (5).

4. A wind tunnel boundary layer sidewall assisted mounting positioning mechanism according to claim 3, wherein: when the clamping plate I (14) is abutted against the side wall of the concrete slab (5), the round rod I (15) and the round rod II (17) are positioned between the corresponding clamping plate I (14) and the inner wall of the U-shaped plate I (11).

5. The method for using the auxiliary installation positioning mechanism for the side wall of the wind tunnel boundary layer according to claim 4, wherein the method comprises the following steps: the using method comprises the following steps:

step one: the U-shaped plate I (11) and the U-shaped plate II (21) are respectively placed at the upper ends of the corresponding concrete slabs (5);

step two: rotating the bolt I (12) and the bolt II (22) to enable the clamping plate I (14) and the clamping plate II (24) to lean against the side wall of the concrete slab (5);

step three: sleeving the sliding chute (34) on the sliding block (26), and then lifting the pre-installed concrete slab (5) to a preset position through a crane;

step four: when the concrete slab (5) is placed downwards, the round hole (33) is sleeved on the outer side of the rotary drum (43), and the clamping block (32) is embedded into the slideway I (42);

step five: then slowly rotating the concrete plate (5) through the crane, wherein the concrete plate (5) is at a certain distance from the bottom surface, friction cannot occur between the concrete plate (5) and the bottom surface, the connecting plate (31) is sleeved on the rotary drum (43) through a round hole (33), the connecting plate (31) is positioned in the middle of the rotary drum (43), in the rotating process of the crane, the concrete plate (5) is driven to rotate, the concrete plate (5) drives an auxiliary device II (2) at the upper end of the concrete plate to rotate, a sliding block (26) at the upper end of the auxiliary device II (2) drives the connecting plate (31) to rotate around the rotary drum (43) through a sliding groove (34), in the rotating process of the connecting plate (31), the rotary drum (43) is driven to rotate through a sliding block (32), and the rotary drum (43) drives a limiting rod (47) to rotate through a sliding way II (44), and the rotary drum (43) and the fixed drum (45) are relatively rotated, and the limiting rod (47) moves in a spiral groove (46) and simultaneously moves downwards along the sliding way II (44) until a preset angle is reached, and then the crane is closed; then the spiral cover (41) is connected to the upper ends of the rotary drum (43) and the fixed drum (45) through threads, so that the rotary drum (43) cannot rotate relative to the fixed drum (45), further the rotation of the connecting plate (31) is limited, and the problem that the angle needs to be readjusted due to misoperation of a crane can be avoided;

step six: and rotating the polygonal knob (36) to enable the screw rod (35) to push the auxiliary device II (2) to move, and finally placing the concrete slab (5) on the bottom surface through the crane.