A mounting structure for a wind tunnel balance

Abstract

This utility model discloses an installation structure for a wind tunnel balance, including a base and a connecting component for connecting the base to the wind tunnel. In this application, after adjusting the orientation of the base, it is fixed to the corresponding position in the wind tunnel using a fastening rod. Then, the corresponding wind tunnel balance is fixed to the top of the lifting bar. Next, the wind tunnel balance is raised to a suitable height, and the positioning rod is engaged with the corresponding screw hole until the open end of the positioning rod abuts against the outer wall of the lifting bar, thus fixing the lifting bar to the wind tunnel balance. Then, the wind tunnel balance cable is placed between the outer base and the mating seat, and the mating seat is locked, thus achieving partial positioning of the cable. This reduces the cable's swing amplitude, and the traction force generated by the swing acts on the connection between the mating seat and the cable, rather than directly on the connection with the wind tunnel balance. This allows for both height adjustment of the wind tunnel balance and ensures stable operation of the wind tunnel balance.

Description

Technical Field

[0001] This utility model relates to the field of wind tunnel balance installation technology, and in particular to an installation structure for wind tunnel balances. Background Technology

[0002] A wind tunnel balance is a key measuring device used in wind tunnel experiments to accurately measure the aerodynamic forces and moments acting on a model. It is usually installed in the wind tunnel test section, connecting the model under test to the supporting structure, and can measure the six degrees of freedom loads on the model under the action of airflow in real time.

[0003] Chinese Patent Publication No. CN209910945U, published on 20200107, discloses a stress wave wind tunnel balance for pulse wind tunnels. The balance includes a wind tunnel model, a sensitive beam, a semiconductor strain gauge, and an accelerometer. The wind tunnel model is a hollow structure, which is fixedly connected to the slender rod-shaped sensitive beam. A semiconductor strain gauge is installed on the sensitive beam near the wind tunnel model. An accelerometer is also installed in the wind tunnel model. The wind tunnel model includes a model top, a model front section, and a model rear section. The model front section is an arc-shaped cover structure with a through hole in the center, and the model rear section is an inverted conical hollow structure.

[0004] Existing installation structures for wind tunnel balances mostly involve fixing a mounting bracket below the wind tunnel balance and securing the bracket to the corresponding position in the wind tunnel using fastening rods. In practice, the height of the wind tunnel balance is relatively fixed, and as testing progresses, the connecting cables of the wind tunnel balance are prone to significant swinging, affecting the stability of the connection between the cables and the balance. Therefore, there is an urgent need to propose a corresponding installation structure for wind tunnel balances to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide an installation structure for a wind tunnel balance in order to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An installation structure for a wind tunnel balance includes a base and a connecting component for connecting the base to the wind tunnel. A vertical column is fixedly connected to the top of the base, and a lifting bar is inserted into the top of the vertical column. A positioning rod is screwed onto the outer wall of the arc-shaped end of the vertical column through a screw hole, and the open end of the positioning rod abuts against the outer wall of the lifting bar. A constraint component for constraining the position of the wind tunnel balance cable is provided at the open end of the positioning rod.

[0007] Preferably, the connecting component includes multiple sets of arc-shaped grooves arranged in a ring, and fastening rods are inserted inside each set of arc-shaped grooves.

[0008] Preferably, a gasket is overlapped on the top of the base, and the fastening rod passes through the gasket.

[0009] Preferably, the constraint assembly includes an outer seat fixedly connected to the open end of the positioning rod, and the outer seat has an integrated mating seat and a mounting part for fixing the mating seat on its outer side. The mating seat and the outer seat are both fixedly connected with silicone pads on their opposite surfaces.

[0010] Preferably, the mounting part includes side pieces that are fixedly connected to the outer walls of the outer seat and the mating seat respectively, and the two sets of side pieces are fixedly connected by a fixing rod.

[0011] Preferably, the screw holes are provided in multiple sets, and the multiple sets of screw holes are distributed in a ring.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. In this application, after adjusting the orientation of the base, the base is fixed to the corresponding position in the wind tunnel using the fastening rod. Then, the corresponding wind tunnel balance is fixed to the top of the lifting bar. After raising the wind tunnel balance to a suitable height, the positioning rod is engaged with the corresponding screw hole until the open end of the positioning rod abuts against the outer wall of the lifting bar, thereby fixing the lifting bar and the wind tunnel balance. Then, the wind tunnel balance cable is placed between the outer seat and the mating seat, and the mating seat is locked, thereby achieving partial positioning of the cable. This reduces the amplitude of cable swing, and the traction force generated by the swing will act on the connection between the mating seat and the cable, rather than directly on the connection with the wind tunnel balance. This allows for both height adjustment of the wind tunnel balance and stable operation of the wind tunnel balance.

[0013] 2. In this application, the fastening rod is passed through the arc-shaped groove and engaged with the preset hole on the wind tunnel. Then, the base is axially deflected, and the arc-shaped groove will slide and engage with the fastening rod until the lifting bar is deflected to a suitable axial angle. Then, the fastening rod is fully screwed on. This ensures the stability of the base installation while allowing for the adjustment of the axial position of the lifting bar. The shim further ensures the stability of the fastening rod and the base engagement. Attached Figure Description

[0014] Figure 1 A schematic diagram of the overall structure according to an embodiment of the present utility model is shown; Figure 2 A schematic diagram of the base structure provided according to an embodiment of the present utility model is shown; Figure 3 A schematic diagram of a sealing gasket structure according to an embodiment of the present invention is shown; Figure 4 A schematic diagram of a lifting bar structure according to an embodiment of the present invention is shown.

[0015] Legend: 1. Base; 2. Arc groove; 3. Gasket; 4. Fastening rod; 5. Vertical column; 6. Screw hole; 7. Lifting bar; 8. Outer seat; 9. Mating seat; 10. Side plate; 11. Silicone pad; 12. Positioning rod; 13. Fixing rod. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4 This utility model provides a technical solution: An installation structure for a wind tunnel balance includes a base 1 and a connecting component for connecting the base 1 to the wind tunnel. A vertical column 5 is fixedly connected to the top of the base 1, and a lifting bar 7 is inserted into the top of the vertical column 5. A positioning rod 12 is screwed onto the outer wall of the arc-shaped end of the vertical column 5 through a screw hole 6, and the open end of the positioning rod 12 abuts against the outer wall of the lifting bar 7. A constraint component for constraining the position of the wind tunnel balance cable is provided at the open end of the positioning rod 12. After adjusting the orientation of the base 1, fix the base 1 to the corresponding position in the wind tunnel using the fastening rod 4. Then, fix the corresponding wind tunnel balance to the top of the lifting bar 7. Next, lift the wind tunnel balance to a suitable height and then engage the positioning rod 12 with the corresponding screw hole 6 until the open end of the positioning rod 12 abuts against the outer wall of the lifting bar 7. This fixes the lifting bar 7 to the wind tunnel balance. Then, place the wind tunnel balance cable between the outer seat 8 and the mating seat 9 and lock the mating seat 9. This achieves partial positioning of the cable, reducing the cable swing amplitude. At the same time, the traction force generated by the swing will act on the connection between the mating seat 9 and the cable, rather than directly on the connection with the wind tunnel balance. This allows for both height adjustment of the wind tunnel balance and ensures stable operation of the wind tunnel balance.

[0018] Specifically, such as Figure 2 and Figure 4 As shown, the connecting assembly includes multiple sets of arc-shaped grooves 2 arranged in a ring, and fastening rods 4 are inserted inside each set of arc-shaped grooves 2. A gasket 3 overlaps the top of the base 1. The fastening rod 4 passes through the gasket 3, passes through the arc-shaped groove 2, and engages with the preset hole on the wind tunnel. Then, the base 1 is axially deflected, and the arc-shaped groove 2 will slide and engage with the fastening rod 4 until the lifting bar 7 is deflected to a suitable axial angle. Then, the fastening rod 4 is fully screwed on. This ensures the stability of the base 1 installation while allowing for axial position adjustment of the lifting bar 7. The gasket 3 further ensures the stability of the engagement between the fastening rod 4 and the base 1.

[0019] Specifically, such as Figure 2 and Figure 3 As shown, the constraint assembly includes an outer seat 8 fixedly connected to the open end of the positioning rod 12. The outer seat 8 has a mating seat 9 integrated on its outer side and a mounting part for fixing the mating seat 9. Silicone pads 11 are fixedly connected to the mating seat 9 and the outer seat 8 on their opposite sides. The mounting part includes side pieces 10 fixedly connected to the outer walls of the outer seat 8 and the mating seat 9 respectively. The two sets of side pieces 10 are fixedly connected to each other by a fixing rod 13. After the wind tunnel balance cable is placed between the outer seat 8 and the mating seat 9, the mating seat 9 is locked to achieve local positioning of the cable. There are multiple sets of screw holes 6, and the multiple sets of screw holes 6 are arranged in a ring to accommodate different lead-out directions of the wind tunnel balance cable.

[0020] Working principle: After adjusting the orientation of base 1, fix base 1 to the corresponding position in the wind tunnel using fastening rod 4. Then, fix the corresponding wind tunnel balance to the top of lifting bar 7. Next, lift the wind tunnel balance to a suitable height, and then engage positioning rod 12 with the corresponding screw hole 6 until the open end of positioning rod 12 abuts against the outer wall of lifting bar 7, thus fixing lifting bar 7 to wind tunnel balance. Then, place the wind tunnel balance cable between outer seat 8 and mating seat 9, and lock mating seat 9, thus achieving partial positioning of the cable. This reduces the cable swing amplitude, while the traction force generated by the swing will... The action is applied at the connection between the mating seat 9 and the cable, rather than directly to the connection with the wind tunnel balance. This allows for both height adjustment of the wind tunnel balance and stable operation. The fastening rod 4 is passed through the arc groove 2 and engaged with the preset hole on the wind tunnel. Then, the base 1 is axially deflected, and the arc groove 2 slides with the fastening rod 4 until the lifting bar 7 is deflected to the appropriate axial angle. The fastening rod 4 is then fully screwed on. This ensures the stability of the base 1 installation while allowing for axial position adjustment of the lifting bar 7. The shim 3 further ensures the stability of the fit between the fastening rod 4 and the base 1.

[0021] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mounting structure for a wind tunnel balance, comprising a base (1) and a connecting assembly for connecting the base (1) to a wind tunnel, characterized in that, The base (1) is fixedly connected to a vertical column (5) at the top. A lifting bar (7) is inserted into the top of the vertical column (5). A positioning rod (12) is screwed into the outer wall of the arc-shaped end of the vertical column (5) through a screw hole (6). The open end of the positioning rod (12) abuts against the outer wall of the lifting bar (7). The open end of the positioning rod (12) is provided with a constraint component for constraining the position of the wind tunnel balance cable.

2. The mounting structure for a wind tunnel balance according to claim 1, characterized in that, The connecting component includes multiple sets of arc-shaped grooves (2) arranged in a ring, and fastening rods (4) are inserted inside each set of arc-shaped grooves (2).

3. The mounting structure for a wind tunnel balance according to claim 2, characterized in that, The base (1) has a pad (3) attached to its top, and the fastening rod (4) passes through the pad (3).

4. The mounting structure for a wind tunnel balance according to claim 3, characterized in that, The constraint assembly includes an outer seat (8) fixedly connected to the open end of the positioning rod (12). The outer seat (8) has a mating seat (9) integrated on its outer side and a mounting part for fixing the mating seat (9). The mating seat (9) and the outer seat (8) are both fixedly connected with silicone pads (11).

5. The mounting structure for a wind tunnel balance according to claim 4, characterized in that, The mounting part includes side pieces (10) that are fixedly connected to the outer walls of the outer seat (8) and the mating seat (9), and the two sets of side pieces (10) are fixedly connected by a fixing rod (13).

6. The mounting structure for a wind tunnel balance according to claim 1, characterized in that, The screw holes (6) are provided in multiple sets, and the multiple sets of screw holes (6) are arranged in a ring.

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