Balance desktop turnover machine

Abstract

A balance desktop tilter belongs to the technical field of balance auxiliary equipment. According to the invention, the problems of low balance adjustment efficiency and complicated balance support types caused by the fact that the installation and debugging of the current wind tunnel balance need frequent manual overturning and the balances with different sizes need different balance supports are solved. A plurality of guide rails are symmetrically mounted on a base, a sliding seat and a fixed seat are respectively connected with the base through the guide rails, and a balance is placed on the sliding seat and the fixed seat. According to the balance desktop upender, through movement of the sliding seat and installation of each roller, the balance desktop upender can be suitable for supporting and angle adjustment of most wind tunnel balances, compared with a traditional wind tunnel balance adjustment mode, the efficiency is higher, and a wind tunnel balance support does not need to be frequently replaced.

Description

Technical Field

[0001] This invention belongs to the technical field of balance auxiliary equipment, specifically relating to a balance tabletop flipping machine. Background Technology

[0002] During the installation, debugging, and bonding of the wind tunnel balance, the balance must be flipped. Given the excessive weight and size of the balance, an auxiliary device is needed to achieve the flipping purpose.

[0003] Traditional balance installation and adjustment involves placing the balance on a balance stand for testing. The stand itself lacks a tilting mechanism and has a fixed span; one stand can only be used for one type of balance, making it incompatible with multiple balances sharing a single stand. During installation and adjustment, if the balance needs to be tilted, two people are required to manually move and tilt it. Due to the weight and size of the balance, frequent manual tilting leads to low adjustment efficiency and makes precise control of the tilting angle impossible, especially when multiple adjustments are needed. When attaching different balances, the balance stand needs to be frequently replaced, requiring disassembly and reassembly of the stand to the work surface each time, which is time-consuming and labor-intensive. Furthermore, a large space is required to house the balance stands, and as the types of balances increase, so do the types of balance stands, necessitating even more space.

[0004] Therefore, this application proposes a balance tabletop flipping machine to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to solve the problems of low adjustment efficiency and a wide variety of balance brackets in current wind tunnel balance installation and adjustment processes, which require frequent manual rotation and require different brackets for different sizes of balances. A brief overview of the invention is provided below to offer a basic understanding of certain aspects of it. It should be understood that this overview is not an exhaustive summary of the invention. It is not intended to identify key or essential parts of the invention, nor is it intended to limit the scope of the invention.

[0006] The technical solution of the present invention:

[0007] A balance tabletop flipping machine includes a base, guide rails, a sliding seat, and a fixed seat. Multiple guide rails are symmetrically installed on the base. The sliding seat and the fixed seat are connected to the base through the guide rails, and the balance is placed on the sliding seat and the fixed seat.

[0008] The sliding seat includes a first mounting frame, a first slider, a first rubber-coated roller and a second rubber-coated roller. The first mounting frame is slidably connected to the guide rail through the first slider. The first rubber-coated roller and the second rubber-coated roller are mounted on the first mounting frame.

[0009] The fixed base includes a second mounting bracket, a second slider, an active rubber-coated roller, and a driven rubber-coated roller. The second mounting bracket is slidably connected to the guide rail via the second slider. The active rubber-coated roller and the driven rubber-coated roller are mounted on the second mounting bracket. A motor is mounted on the second mounting bracket. The actuator end of the motor is connected to the active sprocket via a worm gear reducer. The active sprocket and the driven sprocket are connected via a chain. The driven sprocket is connected to the active rubber-coated roller.

[0010] Furthermore, the first mounting bracket is symmetrically machined with a first small-diameter balance mounting hole and a first large-diameter balance mounting hole, and the first rubber-coated roller and the second rubber-coated roller are both rotatably mounted on the first small-diameter balance mounting hole or the first large-diameter balance mounting hole.

[0011] Furthermore, a column is installed on the first mounting bracket.

[0012] Furthermore, the second mounting bracket is symmetrically machined with a second small-diameter balance mounting hole and a second large-diameter balance mounting hole. The second small-diameter balance mounting hole is axially aligned with the first small-diameter balance mounting hole, and the second large-diameter balance mounting hole is axially aligned with the first large-diameter balance mounting hole. Both the active rubber-coated roller and the driven rubber-coated roller are rotatably mounted on the second small-diameter balance mounting hole or the second large-diameter balance mounting hole.

[0013] Furthermore, a third limiting block is installed on the guide rail, and two third limiting blocks are arranged on both sides of the second slider to fix the fixing seat on the guide rail.

[0014] Furthermore, a first limiting block and a second limiting block are installed on the guide rail. The first limiting block is arranged at the end of the guide rail on one side of the sliding seat, and the second limiting block is arranged at the center of the guide rail.

[0015] The present invention has the following beneficial effects:

[0016] 1. A tabletop balance flipping machine of the present invention, wherein a wind tunnel balance is placed between the first and second rubber-coated rollers of the sliding seat and the driving and driven rubber-coated rollers of the fixed seat. The motor on the fixed seat is connected to the worm gear reducer, and the sprocket and chain structure drives the driving rubber-coated roller to rotate, thereby driving the wind tunnel balance to flip. Both the worm gear reducer and the sprocket assembly have a speed reduction function, thereby reducing the speed of the balance, enabling the balance to rotate slowly, so that the balance can rotate at a low speed and stop at the required position, thereby achieving precise adjustment of the placement angle.

[0017] 2. A balance tabletop flipping machine of the present invention has a first small-diameter balance mounting hole and a first large-diameter balance mounting hole machined on the sliding seat, and a second small-diameter balance mounting hole and a second large-diameter balance mounting hole machined on the fixed seat. The installation position of the rubber-coated roller is adjusted according to the balance of different diameters. When the balance diameter is small, the first small-diameter balance mounting hole and the second small-diameter balance mounting hole closer to the inside are selected. When the balance diameter is large, the first large-diameter balance mounting hole and the second large-diameter balance mounting hole closer to the outside are selected.

[0018] 3. The balance tabletop flipping machine of the present invention requires no manual handling or lifting of the wind tunnel balance throughout the entire process. It only requires adjusting the position of the sliding seat through the guide rail and starting the motor to complete the flipping, avoiding the hidden dangers of personnel being scratched or crushed, and conforming to the safety operation specifications of wind tunnel testing. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a balance tabletop flipping machine;

[0020] Figure 2 This is a side view of a balance tabletop flipping machine;

[0021] Figure 3 This is the left view of the fixed base;

[0022] Figure 4 A front view of a balance tabletop flipping machine;

[0023] Figure 5 This is a top view of a balance tabletop flipper.

[0024] In the diagram: 1-Base, 2-Guide rail, 3-Sliding seat, 4-Fixed seat, 5-Motor, 6-Worm gear reducer, 7-Drive sprocket, 8-Driven sprocket, 9-Chain, 10-First limit block, 11-Second limit block, 31-First mounting bracket, 32-First slider, 33-First rubber-coated roller, 34-Second rubber-coated roller, 35-First small-diameter balance mounting hole, 36-First large-diameter balance mounting hole, 37-Column, 41-Second mounting bracket, 42-Second slider, 43-Third limit block, 44-Driven rubber-coated roller, 45-Driven rubber-coated roller, 46-Second small-diameter balance mounting hole, 47-Second large-diameter balance mounting hole. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0026] The connections mentioned in this invention are divided into fixed connections and detachable connections. Fixed connections (i.e., non-detachable connections) include, but are not limited to, conventional fixed connection methods such as folded connections, riveted connections, adhesive connections, and welded connections. Detachable connections include, but are not limited to, conventional disassembly methods such as threaded connections, snap-fit ​​connections, pin connections, and hinged connections. When a specific connection method is not explicitly defined, it is assumed that at least one existing connection method can always be found to achieve the function, and those skilled in the art can choose according to their needs. For example, a welded connection can be chosen for fixed connections, and a hinged connection can be chosen for detachable connections.

[0027] Example 1, combined with Figures 1-5 This embodiment describes a balance tabletop flipping machine, which includes a base 1, guide rails 2, sliding seat 3, and fixed seat 4. Multiple guide rails 2 are symmetrically installed on the base 1. The sliding seat 3 and fixed seat 4 are respectively connected to the base 1 through the guide rails 2. The balance is placed on the sliding seat 3 and fixed seat 4.

[0028] The bottom of the second mounting bracket 41 of the fixed seat 4 is connected to the guide rail 2 through the second slider 42. The second slider 42 is equipped with a third limiting block 43 on both sides. Under the action of the third limiting block 43, the fixed seat 4 is fixed on the base 1. The bottom of the first mounting bracket 31 of the sliding seat 2 on the other side slides on the guide rail 2 through the first slider 32. By moving the sliding seat 3, the lateral distance between the sliding seat 3 and the fixed seat 4 is adjusted to support wind tunnel balances of different lengths.

[0029] A second limiting block 11 is installed in the middle of the guide rail 2, and a first limiting block 10 is installed at the end of the guide rail 2. The first limiting block 10 is arranged on one side of the sliding seat 3. Its function is to prevent the sliding seat 3 from moving too far laterally and detaching from the guide rail 2. The function of the second limiting block 11 is to limit the distance that the sliding seat 3 moves toward the fixed seat 4 and prevent the sliding seat 3 from sliding beyond its travel range.

[0030] The base 1 is made of 6061 aluminum alloy and its flatness is guaranteed to be ≤0.1mm through CNC machining to ensure the installation accuracy of the guide rail 2. The outer layer of the first rubber-coated roller 33, the second rubber-coated roller 34, the active rubber-coated roller 44 and the driven rubber-coated roller 45 is wrapped with polyurethane rubber with a Shore hardness of 65D to avoid roughness Ra≤0.8μm and to avoid scratching the surface of the wind tunnel balance.

[0031] During installation, based on the length of the wind tunnel balance, the first mounting frame 31 is moved laterally using the column 37 mounted on it as a fulcrum, and then moved to the appropriate position. The first slider 32 at the bottom of the first mounting frame 31 has a brake handle; rotating the brake handle secures the first mounting frame 31. After determining the position of the sliding seat 3, based on the cross-sectional dimensions of the wind tunnel balance, if the cross-sectional dimensions are small, the first rubber-coated roller 33 and the second rubber-coated roller 34 are respectively installed on the first mounting frame 31 through the first small-diameter balance mounting hole 35, and the active rubber-coated roller 44 and the driven rubber-coated roller 45 are respectively installed on the second mounting frame 41 through the second small-diameter balance mounting hole 46, ensuring that the distance between the two rollers is suitable for the wind tunnel balance with a small cross-sectional dimension; if the cross-sectional dimensions of the wind tunnel balance are large, the first rubber-coated roller 33 and the second rubber-coated roller 34 are installed on the first mounting frame 31 through the first large-diameter balance mounting hole 36, and the active rubber-coated roller 44 and the driven rubber-coated roller 45 are installed on the second mounting frame 41 through the second large-diameter balance mounting hole 47.

[0032] The operator removes the wind tunnel balance from the wind tunnel test section and places it stably between the first rubber-coated roller 33, the second rubber-coated roller 34, the active rubber-coated roller 44, and the driven rubber-coated roller 45, ensuring that the balance axis is parallel to the roller axis and that the side of the balance is in contact with the column 37, thereby achieving lateral positioning of the balance.

[0033] When the motor 5 is started, the power is transmitted to the drive sprocket 7 after being reduced by the worm gear reducer 6. The drive sprocket 7 drives the driven sprocket 8 to rotate through the chain 9, which in turn drives the drive rubber-coated roller 44 to rotate clockwise. The drive rubber-coated roller 44 drives the wind tunnel balance to rotate synchronously through friction. At the same time, the driven rubber-coated roller 45, the first rubber-coated roller 33 and the second rubber-coated roller 34 rotate with the rotation of the balance.

[0034] When the balance rotates to the specified angle, the motor 5 stops working. The worm gear reducer 6 has a self-locking characteristic, ensuring that the balance will not rotate excessively after the motor 5 stops rotating. The operator cleans the balance to remove impurities or checks the strain gauges, etc. After maintenance is completed, the motor 5 is started to continue rotating to reset the balance. After resetting, the motor 5 is turned off and the balance is removed.

[0035] This embodiment is merely an exemplary illustration of the present invention and does not limit its scope of protection. Those skilled in the art can make partial changes to it, as long as they do not exceed the spirit and essence of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A balance tabletop flipping machine, characterized in that: The balance includes a base (1), guide rails (2), sliding seat (3) and fixed seat (4). Multiple guide rails (2) are symmetrically installed on the base (1). The sliding seat (3) and fixed seat (4) are connected to the base (1) through the guide rails (2) respectively. The balance is placed on the sliding seat (3) and fixed seat (4). The sliding seat (3) includes a first mounting frame (31), a first slider (32), a first rubber-coated roller (33), and a second rubber-coated roller (34). The first mounting frame (31) is slidably connected to the guide rail (2) through the first slider (32). The first rubber-coated roller (33) and the second rubber-coated roller (34) are mounted on the first mounting frame (31). The fixed base (4) includes a second mounting bracket (41), a second slider (42), an active rubber-coated roller (44), and a driven rubber-coated roller (45). The second mounting bracket (41) is slidably connected to the guide rail (2) through the second slider (42). The active rubber-coated roller (44) and the driven rubber-coated roller (45) are mounted on the second mounting bracket (41). A motor (5) is mounted on the second mounting bracket (41). The actuator of the motor (5) is connected to the active sprocket (7) through a worm gear reducer (6). The active sprocket (7) and the driven sprocket (8) are connected through a chain (9). The driven sprocket (8) is connected to the active rubber-coated roller (44).

2. The balance tabletop flipping machine according to claim 1, characterized in that: The first mounting bracket (31) is symmetrically machined with a first small diameter balance mounting hole (35) and a first large diameter balance mounting hole (36). The first rubber-coated roller (33) and the second rubber-coated roller (34) are both rotatably mounted on the first small diameter balance mounting hole (35) or the first large diameter balance mounting hole (36).

3. A balance tabletop flipping machine according to claim 2, characterized in that: The first mounting bracket (31) is equipped with a column (37).

4. A balance tabletop flipping machine according to claim 2, characterized in that: The second mounting bracket (41) is symmetrically machined with a second small diameter balance mounting hole (46) and a second large diameter balance mounting hole (47). The second small diameter balance mounting hole (46) is axially aligned with the first small diameter balance mounting hole (35), and the second large diameter balance mounting hole (47) is axially aligned with the first large diameter balance mounting hole (36). The active rubber-coated roller (44) and the driven rubber-coated roller (45) are both rotatably mounted on the second small diameter balance mounting hole (46) or the second large diameter balance mounting hole (47).

5. A balance tabletop flipping machine according to claim 4, characterized in that: The guide rail (2) is equipped with a third limiting block (43), and the two third limiting blocks (43) are arranged on both sides of the second slider (42) to fix the fixing seat (4) on the guide rail (2).

6. A balance tabletop flipping machine according to claim 5, characterized in that: The guide rail (2) is equipped with a first limiting block (10) and a second limiting block (11). The first limiting block (10) is arranged at the end of the guide rail (2) on one side of the sliding seat (3), and the second limiting block (11) is arranged at the center of the guide rail (2).

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