Counterweight device for different loads of rotary table and self-adaptive adjusting method thereof

Abstract

The invention discloses a balance weight device for different loads of a rotary table and a self-adaptive adjusting method of the balance weight device. The balance weight device comprises a pitching frame, a first balance weight block and a second balance weight block. The pitching frame comprises a counterweight seat; and the first balancing weight and the second balancing weight are detachably connected to the balancing weight seat. Two balancing weight structures are adopted, the two balancing weights can be installed in a laminated and staggered mode, the balancing weights of the rotary table can be installed layer by layer, accurate balancing of the whole rotary table is achieved, and the balancing weights are convenient to install and disassemble.

Description

Technical Field

[0001] The present application relates to the field of counterweight technology, and in particular to a counterweight device for different loads of a turntable and an adaptive adjustment method thereof. Background Art

[0002] With the advancement of simulation technology, three-axis turntables are increasingly used for attitude simulation and simulation of various aircraft. This is especially true for high-speed, highly maneuverable, and large-scale aircraft. These applications require three-axis simulation turntables to possess strong load capacity, fast response, a wide range of motion, and high positional accuracy. Three-axis simulation turntables are high-precision mechanical devices, and their performance, especially dynamic performance, requires the balance and stability of the turntable. When the load of the product being tested is mounted on the turntable, it becomes unbalanced, requiring the user to perform weight balancing based on the actual weight and center of gravity position.

[0003] Turntable counterweights are typically installed using counterweight blocks. The weight and size of each product vary, requiring different numbers and locations of counterweight blocks. Patent publication number CN102840271A discloses a counterweight mechanism for a turntable's pitch axis. By designing a housing and counterweight blocks, combined with a traditional mechanism, this simplifies operation and improves counterweight efficiency. However, there is no design for a counterweight structure that can accommodate a variety of load parameters.

[0004] Patent publication number CN111426425A discloses a method for counterweighting a turntable by reading encoder speed curves. This method provides a counterweight solution for large turntables but does not describe the structural design of the counterweight device for various load parameters.

[0005] Common turntable counterweights are generally designed to be a single size, and different numbers of counterweights are installed for different load weights and sizes. When the load is eccentric, multiple counterweights are required, or even stacked. Counterweights of a single size are designed with through holes, and stacked installation is achieved by using longer screws to penetrate the through holes and fix multiple layers of counterweights. This counterweight structure design makes it impossible to install layer by layer, and can only be partially stacked on the installation end face, which reduces the dynamic performance of the turntable. At the same time, the counterweights are inconvenient to disassemble and install. When disassembling multiple layers of counterweights, it is easy for the multiple layers to fall at the same time, posing a safety risk. In addition, the use of long screws can easily cause the screws to deform, making it impossible to disassemble and install the counterweights. Summary of the Invention

[0006] In light of this, the present application provides a counterweight device and adaptive adjustment method for different turntable loads. The counterweights utilize two structural designs. These two types of counterweights can be installed in a staggered manner, allowing the turntable counterweights to be installed layer by layer, achieving precise balancing of the entire turntable. Furthermore, the counterweights are easy to install and remove, reducing the requirements for installers. Furthermore, by selecting load parameters in the turntable control software, the turntable controller can adaptively adjust the control parameters to achieve optimal dynamic performance.

[0007] The present application discloses a counterweight device for different loads of a turntable, which includes a pitch frame, a first counterweight block and a second counterweight block; the pitch frame includes a counterweight seat; the first counterweight block and the second counterweight block are detachably connected to the counterweight seat.

[0008] Furthermore, the first counterweight blocks are circumferentially distributed and installed on the counterweight seat, and the second counterweight blocks are circumferentially distributed on the first counterweight block; the first counterweight blocks and the second counterweight blocks are alternately installed on the counterweight seat; or, The second counterweight blocks are circumferentially distributed and installed on the counterweight seat, and the first counterweight blocks are circumferentially distributed on the second counterweight blocks; the first counterweight blocks and the second counterweight blocks are alternately installed on the counterweight seat.

[0009] Furthermore, the first counterweight block, the second counterweight block and the counterweight seat are connected by bolts.

[0010] Furthermore, a plurality of the first counterweight blocks are sequentially connected along the circumferential direction to form a circular ring; a plurality of the second counterweight blocks are sequentially connected along the circumferential direction to form a circular ring; The counterweight seat is a hollow structure, which is a cylinder. The cross-sectional size of the cylinder is the same as the size of the circular ring formed by the first counterweight blocks and the size of the circular ring formed by the second counterweight blocks.

[0011] Furthermore, the shape of the first counterweight block and the shape of the second counterweight block are both fan-shaped.

[0012] Furthermore, the size of the first counterweight is the same as the size of the second counterweight.

[0013] Furthermore, the first counterweight block and the second counterweight block are both provided with through holes and blind holes, so that the first counterweight block, the second counterweight block and the counterweight seat can be matched and connected.

[0014] Furthermore, the pitch frame further includes a rotation axis, which is arranged inside the counterweight seat, and the first counterweight block and the second counterweight block are arranged on one side of the counterweight seat.

[0015] The present application also discloses an adaptive adjustment method for a counterweight device for different turntable loads, which is applicable to the above-mentioned counterweight device for different turntable loads, and includes: Mounting a load inside the rotating shaft of the counterweight seat, mounting the first counterweight block and the second counterweight block on one side of the counterweight seat as counterweight ends; According to the center of mass of the load and its installation position on the counterweight seat, the load gravity moment change before and after the load change, that is, the gravity moment change that needs to be adjusted at the counterweight end, is obtained; According to the installation position and change of the first counterweight block and / or the second counterweight block at the counterweight end, the counterweight weight that needs to be adjusted is obtained to keep the two ends of the pitch frame balanced, that is, the load and the counterweight end are in a balanced state.

[0016] The present application also discloses an adaptive adjustment method for a counterweight device for different turntable loads, which is applicable to the above-mentioned counterweight device for different turntable loads, and includes: Mounting a load inside the rotating shaft of the counterweight seat, mounting the first counterweight block and the second counterweight block on one side of the counterweight seat as counterweight ends; According to the weight of the load, the first counterweight and / or the second counterweight is gradually increased or decreased until the pitch frame remains stable in the horizontal position and no longer deflects, that is, the load and the counterweight end are in a balanced state.

[0017] By adopting the above-mentioned technical solution, the present application has the following advantages: the three-axis turntable counterweight designed in the present application can be flexibly balanced according to different load parameters. The counterweights can be installed in a staggered manner, enabling layer-by-layer installation, making installation and removal of the counterweights easy. Furthermore, by selecting different load parameters through the control software, the control cabinet can adaptively adjust the control parameters according to the turntable load parameters, thereby achieving optimal high-dynamic performance of the turntable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments recorded in the embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the first counterweight block in an embodiment of the present application; Figure 2 This is a schematic diagram of the second counterweight block in an embodiment of the present application; Figure 3 This is a schematic diagram of the installation of the counterweight block according to an embodiment of the present application; Figure 4This is a schematic diagram of the balancing state of a 120kg simulated load installed in an embodiment of the present application; Figure 5 This is a schematic diagram of the balancing state of a 140kg simulated load installed in an embodiment of the present application; Figure 6 This is a schematic diagram of the balancing state of a 160kg simulated load installed in an embodiment of the present application; Figure 7 This is a schematic diagram of the balancing state of the 220kg simulated load installed in an embodiment of the present application. DETAILED DESCRIPTION

[0020] The present application is further described with reference to the accompanying drawings and embodiments. The embodiments described are only a part of the embodiments of the present application, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field should fall within the scope of protection of the embodiments of the present application.

[0021] See also Figures 1 to 3 The present application provides an embodiment of a counterweight device for different loads of a turntable, which includes a pitch frame, a first counterweight block and a second counterweight block; the pitch frame includes a counterweight seat; the first counterweight block and the second counterweight block are detachably connected to the counterweight seat.

[0022] Optionally, the first counterweights are circumferentially distributed and installed on the counterweight seat, and the second counterweights are circumferentially distributed on the first counterweight; the first counterweights and the second counterweights are alternately installed on the counterweight seat; or, The second counterweight blocks are circumferentially distributed and installed on the counterweight seat, and the first counterweight blocks are circumferentially distributed on the second counterweight blocks; the first counterweight blocks and the second counterweight blocks are alternately installed on the counterweight seat.

[0023] Optionally, the first counterweight block, the second counterweight block and the counterweight seat are connected by bolts.

[0024] Optionally, a plurality of the first counterweight blocks are sequentially connected along the circumferential direction to form a ring; a plurality of the second counterweight blocks are sequentially connected along the circumferential direction to form a ring; The counterweight seat is a hollow structure, which is a cylinder. The cross-sectional size of the cylinder is the same as the size of the circular ring formed by the first counterweight blocks and the size of the circular ring formed by the second counterweight blocks.

[0025] Optionally, the shape of the first counterweight block and the shape of the second counterweight block are both fan-shaped.

[0026] See also Figure 1 and Figure 2The first counterweight block and the second counterweight block are a group of fan-shaped metal blocks; a single block or a combination of multiple blocks are used according to actual conditions to form a corresponding weight combination, which is installed in the counterweight position to make the shaft reach a relative gravity balance state.

[0027] Optionally, the size of the first counterweight is the same as the size of the second counterweight.

[0028] Optionally, the first counterweight block and the second counterweight block are both provided with through holes and blind holes, so that the first counterweight block, the second counterweight block and the counterweight seat can be matched and connected.

[0029] Optionally, the pitch frame further includes a rotation axis, which is disposed inside the counterweight seat, and the first counterweight block and the second counterweight block are disposed on one side of the counterweight seat.

[0030] In the embodiment of the present application, the installation method of the counterweight blocks (the first counterweight block and the second counterweight block) is as follows: Figure 3 As shown, there are two types of counterweights, counterweight 1 (the first counterweight) and counterweight 2 (the second counterweight), and their models are as follows: Figure 1 and Figure 2 As shown in the figure, the counterweights are installed alternately, with counterweights 1 and 2 installed in a circular pattern around the counterweight seat. After counterweight 1 is installed, counterweight 2 is then installed on top of counterweight 1, and this process continues in this order to complete the counterweight installation. Furthermore, the turntable counterweights designed in this application can be installed on both the front and rear ends of the turntable, flexibly adapting to different load installation situations.

[0031] The present application also provides an embodiment of an adaptive adjustment method for a counterweight device for a turntable with different loads, which is applicable to the counterweight device for a turntable with different loads described in the above embodiment, and includes: Mounting a load inside the rotating shaft of the counterweight seat, mounting the first counterweight block and the second counterweight block on one side of the counterweight seat as counterweight ends; According to the center of mass of the load and its installation position on the counterweight seat, the load gravity moment change before and after the load change, that is, the gravity moment change that needs to be adjusted at the counterweight end, is obtained; According to the installation position and change of the first counterweight block and / or the second counterweight block at the counterweight end, the counterweight weight that needs to be adjusted is obtained to keep the two ends of the pitch frame balanced, that is, the load and the counterweight end are in a balanced state.

[0032] Optionally, the mass of the inner shaft (rotating shaft) in the unloaded state is 476 kg, the distance from the center of mass to the center of rotation is 115 mm, the mass of the simulated load is M1, the distance from the center of mass to the center of rotation is L1, the weight of the counterweight is M2, and the distance from the counterweight to the center of rotation is L2; ​​calculate the required counterweight for each load type according to the following formula.

[0033]

[0034] This application also provides control parameters for different load parameters. After the turntable is counterweighted, the corresponding counterweight weight is selected through the control software, and the turntable control parameters for the weight are automatically called to achieve the best dynamic performance of the turntable.

[0035] The present application also provides an embodiment of an adaptive adjustment method for a counterweight device for a turntable with different loads, which is applicable to the counterweight device for a turntable with different loads described in the above embodiment, and includes: Mounting a load inside the rotating shaft of the counterweight seat, mounting the first counterweight block and the second counterweight block on one side of the counterweight seat as counterweight ends; According to the weight of the load, the first counterweight and / or the second counterweight is gradually increased or decreased until the pitch frame remains stable in the horizontal position and no longer deflects, that is, the load and the counterweight end are in a balanced state.

[0036] For ease of understanding, this application provides a more specific embodiment: This application is configured for 120kg, 140kg, 160kg and 220kg, and the weight of counterweight block 1 and counterweight block 2 are both 9.8k. The specific implementation examples are as follows.

[0037] About 120kg simulated load installation: Figure 4 The figure shows the schematic diagram of the balancing state with a 120kg simulated load installed. Compared with the no-load state, the 120kg simulated load is installed at the front end and no processing is done at the rear end. At this time, it is in the balanced state.

[0038] About 140kg simulated load installation: Figure 5 The figure shows the schematic diagram of the balancing state with a 140kg simulated load installed. Compared with the no-load state, the 140kg simulated load is installed at the front end, and the counterweight block 1 is installed at the rear end according to the installation method of the counterweight block. A total of 6 counterweight blocks 1 are required, and the counterweight weight is 58.8kg. At this time, it is in a balanced state.

[0039] About 160kg simulated load installation: Figure 6 The figure shows the schematic diagram of the balancing state with a 160kg simulated load installed. Compared with the no-load state, the 160kg simulated load is installed at the front end, and the counterweight blocks 1 and 2 are installed at the rear end according to the installation method of the counterweight blocks. A total of 12 counterweight blocks 1 and 8 counterweight blocks 2 are required, and the counterweight weight is 196kg. At this time, it is in a balancing state.

[0040] About 220kg simulated load installation: Figure 7 The figure shows the schematic diagram of the balancing state with a 220kg simulated load installed. Compared with the no-load state, the 220kg simulated load is installed at the front end, and the counterweight block 1 and the counterweight block 2 are installed at the rear end according to the installation method of the counterweight block. A total of 16 counterweight blocks 1 and 16 counterweight blocks 2 are required, and the counterweight weight is 313.6kg. At this time, it is in a balanced state.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit them. Although the present application has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present application can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present application should be included in the scope of protection of the claims of the present application.

Claims

1. A counterweight device for different loads of a turntable, characterized in that: It comprises a pitch frame, a first counterweight block and a second counterweight block; the pitch frame comprises a counterweight seat; the first counterweight block and the second counterweight block are detachably connected to the counterweight seat.

2. The counterweight device for different loads of a turntable according to claim 1, characterized in that: The first counterweight blocks are circumferentially distributed and installed on the counterweight seat, and the second counterweight blocks are circumferentially distributed on the first counterweight block; the first counterweight blocks and the second counterweight blocks are alternately installed on the counterweight seat; or, The second counterweight blocks are circumferentially distributed and installed on the counterweight seat, and the first counterweight blocks are circumferentially distributed on the second counterweight blocks; the first counterweight blocks and the second counterweight blocks are alternately installed on the counterweight seat.

3. The counterweight device for different loads of a turntable according to claim 1, characterized in that: The first counterweight block, the second counterweight block and the counterweight seat are connected by bolts.

4. The counterweight device for different turntable loads according to claim 1, characterized in that: A plurality of the first counterweight blocks are sequentially connected along the circumferential direction to form a circular ring; a plurality of the second counterweight blocks are sequentially connected along the circumferential direction to form a circular ring; The counterweight seat is a hollow structure, which is a cylinder. The cross-sectional size of the cylinder is the same as the size of the circular ring formed by the first counterweight blocks and the size of the circular ring formed by the second counterweight blocks.

5. The counterweight device for different loads of a turntable according to claim 1, characterized in that: The shape of the first counterweight block and the shape of the second counterweight block are both fan-shaped.

6. The counterweight device for different loads of a turntable according to claim 1, characterized in that: The size of the first counterweight is the same as the size of the second counterweight.

7. The counterweight device for different loads of a turntable according to claim 1, characterized in that: The first counterweight block and the second counterweight block are both provided with through holes and blind holes, so that the first counterweight block, the second counterweight block and the counterweight seat can be matched and connected.

8. The counterweight device for turntables with different loads according to any one of claims 1 to 7, characterized in that: The pitch frame further includes a rotation shaft, which is disposed inside the counterweight seat. The first counterweight block and the second counterweight block are disposed on one side of the counterweight seat.

9. A self-adaptive adjustment method for a counterweight device for a turntable with different loads, applicable to the counterweight device for a turntable with different loads according to any one of claims 1 to 8, characterized in that: include: Mounting a load inside the rotating shaft of the counterweight seat, mounting the first counterweight block and the second counterweight block on one side of the counterweight seat as counterweight ends; According to the center of mass of the load and its installation position on the counterweight seat, the load gravity moment change before and after the load change, that is, the gravity moment change that needs to be adjusted at the counterweight end, is obtained; According to the installation position and change of the first counterweight block and / or the second counterweight block at the counterweight end, the counterweight weight that needs to be adjusted is obtained to keep the two ends of the pitch frame balanced, that is, the load and the counterweight end are in a balanced state.

10. A self-adaptive adjustment method for a counterweight device for a turntable with different loads, applicable to the counterweight device for a turntable with different loads according to any one of claims 1 to 8, characterized in that: include: Mounting a load inside the rotating shaft of the counterweight seat, mounting the first counterweight block and the second counterweight block on one side of the counterweight seat as counterweight ends; According to the weight of the load, the first counterweight and / or the second counterweight is gradually increased or decreased until the pitch frame remains stable in the horizontal position and no longer deflects, that is, the load and the counterweight end are in a balanced state.

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