Load counterweight device of inertial navigation equipment

Abstract

The utility model discloses a load counterweight device of inertial navigation equipment, which relates to the field of inertial navigation equipment and comprises a connecting base and a frame component, four corners of the bottom of the frame component are fixedly connected with fixing seats, the fixing seats are movably connected to the top of the connecting base, and a counterweight mounting plate is movably clamped outside the frame component. According to the utility model, the frame assembly can be adjusted according to the size of the replaced inertial navigation equipment to enable the inertial navigation equipment to correspond to each other, the counterweight mounting plate corresponding to the inertial navigation equipment is mounted on the outer side of the frame assembly, and the counterweight bolt is mounted in the counterweight mounting plate; the three-axis rotary table calibration device replaces the inertial navigation equipment to perform calibration operation on the three-axis rotary table in a mode of meeting the geometric dimensions and mass gravity centers of different inertial navigation equipment, so that corresponding adjustment can be performed according to the inertial navigation equipment of different batches and sizes, and the flexibility and the economical efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the field of inertial navigation equipment, in particular to a load counterweight device for inertial navigation equipment. Background Art

[0002] An airborne inertial navigation system is usually installed in an aircraft so that the aircraft has good guidance performance and can effectively track the flight along the established route. Since the inertial navigation device in the inertial navigation system does not rely on external information, but uses gyroscopes and accelerometers as sensitive devices, a navigation coordinate system is established according to the output of the gyroscope and the speed and position of the carrier in the navigation coordinate system are calculated according to the output of the accelerometer. Therefore, the high reliability of the inertial navigation device is crucial to the flight safety of the aircraft. The conventional way to calibrate the inertial navigation device on the ground is to use a three-axis turntable. Usually, the inertial navigation device installed on the aircraft is removed from the aircraft and then configured on the three-axis turntable. Through the three-axis rotation of the turntable, the zero-position error and non-zero-position attitude deflection navigation error of the inertial navigation device on the pitch axis, roll axis and yaw axis are calibrated respectively.

[0003] Existing inertial navigation equipment load balancing devices, such as the inertial navigation equipment load balancing device disclosed in application number CN214661759U, do not need to remove the inertial navigation equipment from the aircraft through the setting of the load balancing device. The equipment load balancing device is used to replace the inertial navigation equipment to be assembled on a three-axis turntable for calibration, which can simplify the operator's work and save work time while reducing the risk of damage to the disassembled inertial navigation equipment. However, the geometric dimensions of the inertial navigation equipment adapted by the load balancing device and the fixed mass center of gravity cannot be adjusted according to inertial navigation equipment of different sizes, which reduces flexibility and economy. Utility Model Content

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A load counterweight device for an inertial navigation device comprises a connecting base and a frame assembly, wherein the four corners of the bottom of the frame assembly are fixedly connected to fixing seats, the fixing seats are movably connected to the top of the connecting base, the outside of the frame assembly is movably clamped with a counterweight mounting plate, the outside of the counterweight mounting plate is movably mounted with fixing bolts connected to the frame assembly, and the outside of the counterweight mounting plate is movably mounted with counterweight bolts.

[0006] A further improvement of the technical solution of the utility model is that the frame assembly includes four adjustment sleeve rods 1, the upper and lower sides of the four adjustment sleeve rods 1 are fixedly connected with docking blocks, the inner sides of the docking blocks are fixedly connected with adjustment sleeve rods 2, the outside of the docking blocks is provided with a card slot, and the inner side of the card slot is provided with a fixing hole.

[0007] A further improvement of the technical solution of the utility model is that the counterweight mounting plate includes a plate body and threaded mounting holes, the threaded mounting holes are equidistantly arranged inside the plate body, and the counterweight bolts are threadedly mounted inside the threaded mounting holes.

[0008] A further improvement of the technical solution of the utility model is that the connecting base includes a shell and a connecting base plate fixedly installed on the bottom of the connecting base, an electromagnet is fixedly installed on the inner side of the shell, and the fixing seat is adsorbed and connected to the top of the electromagnet.

[0009] A further improvement of the technical solution of the utility model is that the first adjusting sleeve rod is located between the docking blocks and is vertically arranged, and the second adjusting sleeve rod is located between the docking blocks and is horizontally arranged.

[0010] A further improvement of the technical solution of the utility model is that the size of the plate body and the position of the threaded mounting hole are adjusted according to the target inertial navigation device.

[0011] A further improvement of the technical solution of the utility model is that the fixing bolts are located at the four corners of the plate body and are threadedly connected to the inside of the fixing holes.

[0012] A further improvement of the technical solution of the utility model is that: the fixing seat is arranged at the bottom of the docking block.

[0013] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0014] The utility model provides an inertial navigation equipment load counterweight device, which is provided with a frame component and can be adjusted according to the size of the replaced inertial navigation equipment through the frame component to make them correspond to each other, and a counterweight mounting plate corresponding to the inertial navigation equipment is installed on the outside of the frame component and a counterweight bolt is installed inside the counterweight mounting plate, so that the inertial navigation equipment can be calibrated on a three-axis turntable in a manner that satisfies the geometrical dimensions and mass center of gravity of different inertial navigation equipment, so that the inertial navigation equipment of different batches and sizes can be correspondingly adjusted, thereby improving flexibility and economy.

[0015] The utility model provides a load counterweight device for an inertial navigation device, which is connected to a base and a fixing base, is fixed to a three-axis turntable by connecting the base and is connected to the fixing base by an adsorption method, thereby facilitating the fixing operation of a frame assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the load counterweight device of the inertial navigation equipment of the utility model;

[0017] Figure 2This is a schematic diagram of the structure of the counterweight bolt of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the frame assembly of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the counterweight mounting plate of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the connecting base of the utility model.

[0021] In the figure: 1. connecting base; 11. shell; 12. connecting bottom plate; 13. electromagnet; 2. fixing seat; 3. frame assembly; 31. adjusting sleeve rod 1; 32. docking block; 33. adjusting sleeve rod 2; 34. slot; 35. fixing hole; 4. counterweight mounting plate; 41. plate body; 42. threaded mounting hole; 5. fixing bolt; 6. counterweight bolt. DETAILED DESCRIPTION

[0022] The utility model is further described in detail below:

[0023] like Figures 1 to 5 As shown, the utility model provides an inertial navigation equipment load counterweight device, including a connecting base 1 and a frame assembly 3, the four corners of the bottom of the frame assembly 3 are fixedly connected with a fixing seat 2, the fixing seat 2 is movably connected to the top of the connecting base 1, the outside of the frame assembly 3 is movably clamped with a counterweight mounting plate 4, the outer side of the counterweight mounting plate 4 is movably installed with a fixing bolt 5 connected to the frame assembly 3, and the outside of the counterweight mounting plate 4 is movably installed with a counterweight bolt 6.

[0024] By providing a frame assembly 3 and adjusting the frame assembly 3 according to the size of the replaced inertial navigation device to make them correspond to each other, and by installing a counterweight mounting plate 4 corresponding to the inertial navigation device on the outside of the frame assembly 3 and installing a counterweight bolt 6 inside the counterweight mounting plate 4, the geometric dimensions and mass center of gravity of different inertial navigation devices can be met so that the inertial navigation device can be calibrated on the three-axis turntable instead of the inertial navigation device, so that it can be adjusted according to inertial navigation devices of different batches and sizes, thereby improving flexibility and improving economy by only using the counterweight mounting plate 4 that matches the inertial navigation device. By connecting the base 1 and the fixing base 2, the base 1 is fixed on the three-axis turntable and connected to the fixing base 2 by adsorption, thereby facilitating the fixing operation of the frame assembly 3.

[0025] like Figure 3 and Figure 4As shown, the frame assembly 3 includes four adjustment sleeve rods 31, and the upper and lower sides of the four adjustment sleeve rods 31 are fixedly connected with docking blocks 32. The inner sides of the docking blocks 32 are fixedly connected with adjustment sleeve rods 2 33. The outside of the docking blocks 32 is provided with a slot 34, and the inner side of the slot 34 is provided with a fixing hole 35.

[0026] The counterweight mounting plate 4 includes a plate body 41 and threaded mounting holes 42 . The threaded mounting holes 42 are equidistantly arranged inside the plate body 41 . The counterweight bolts 6 are threadedly mounted inside the threaded mounting holes 42 .

[0027] By adjusting the height of the adjustment sleeve rod 1 31 between the docking blocks 32 and the lateral distance of the adjustment sleeve rod 2 33 between the docking blocks 32 according to the size and mass of the replaced inertial navigation device, the adjustment sleeve rod 1 31 and the adjustment sleeve rod 2 33 cooperate to slide to drive the docking block 32 at its end to move so that it adapts to the size of the replaced inertial navigation device. By selecting a plate body 41 adapted to the size of the inertial navigation device and inserting it into the card groove 34 on the outer side of the docking block 32 and using the fixing bolt 5 to pass through the plate body 41 and connect it to the fixing hole 35 for fixing, so as to simulate the sizes of different inertial navigation devices, it is only necessary to manufacture a matching counterweight mounting plate 4 according to the size of the inertial navigation device and cooperate with the frame assembly 3 for adjustment and use, thereby improving flexibility and economy.

[0028] like Figure 5 As shown, the connecting base 1 includes a shell 11 and a connecting base plate 12 fixedly installed at the bottom of the connecting base 1 , an electromagnet 13 is fixedly installed inside the shell 11 , and the fixing base 2 is adsorbed and connected to the top of the electromagnet 13 .

[0029] The frame assembly 3 is fixedly mounted on the three-axis turntable by connecting the base 1, and the fixing seat 2 is placed above the electromagnet 13 accordingly, and the electromagnet 13 is energized to make the electromagnet 13 adsorbed and connected to the fixing seat 2, thereby facilitating the fixing and disassembly of the frame assembly 3.

[0030] like Figure 3 As shown, the first adjusting sleeve rod 31 is located between the docking blocks 32 and is vertically arranged, and the second adjusting sleeve rod 33 is located between the docking blocks 32 and is horizontally arranged.

[0031] The first adjusting sleeve rod 31 and the second adjusting sleeve rod 33 are respectively arranged vertically and horizontally with the docking block 32 to ensure accurate and stable adjustment.

[0032] like Figure 4 As shown, the size of the plate 41 and the position of the threaded mounting hole 42 are adjusted according to the target inertial navigation device.

[0033] The size of the plate 41 and the position of the threaded mounting hole 42 are set based on the target inertial navigation device, so that the counterweight adjustment thereof through the counterweight bolt 6 is convenient.

[0034] like Figure 4 As shown, the fixing bolts 5 are located at the four corners of the plate body 41 and are threadedly connected to the inside of the fixing holes 35 .

[0035] The counterweight mounting plate 4 is fixed to the frame assembly 3 by means of fixing bolts 5 passing through the plate body 41 and connected to the fixing holes 35 .

[0036] like Figure 1 As shown, the fixing seat 2 is disposed at the bottom of the docking block 32 .

[0037] The fixing seat 2 is located at the bottom of the docking block 32 so that it is adsorbed and connected to the connecting base 1, thereby ensuring stable fixation and convenient disassembly.

[0038] The following is a detailed description of the working principle of the inertial navigation equipment load counterweight device.

[0039] like Figures 1 to 5 As shown in the figure, by adjusting the height of the adjustment sleeve rod 1 31 between the docking blocks 32 and the lateral distance of the adjustment sleeve rod 2 33 between the docking blocks 32 according to the size and mass of the replaced inertial navigation device, the adjustment sleeve rod 1 31 and the adjustment sleeve rod 2 33 cooperate to slide to drive the docking block 32 at its end to move so that it is adapted to the size of the replaced inertial navigation device, and by selecting a plate body 41 adapted to the size of the inertial navigation device to be inserted into the card slot 34 on the outer side of the docking block 32 and using a fixing bolt 5 to pass through the plate body 41 to be connected to the fixing hole 35 for fixing, so as to simulate different inertial navigation devices. The size of the navigation equipment is counterweighted by installing the counterweight bolts 6 in the threaded mounting holes 42 at different positions in the plate body 41 to correspond to multiple inertial navigation devices of different sizes and masses due to different batches and states, thereby expanding the adaptability of the device and improving flexibility. It is fixedly installed on the three-axis turntable through the connecting base 1, and the fixing base 2 is placed above the electromagnet 13 accordingly, and the electromagnet 13 is energized to make the electromagnet 13 adsorbed and connected to the fixing base 2, so that the fixing base 2 together with the frame assembly 3 and the counterweight mounting plate 4 on its top are fixed on the connecting base 1 for detection.

[0040] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A load counterweight device for an inertial navigation device, characterized in that: The invention comprises a connecting base (1) and a frame assembly (3), wherein the four corners of the bottom of the frame assembly (3) are fixedly connected to a fixing seat (2), the fixing seat (2) is movably connected to the top of the connecting base (1), the outside of the frame assembly (3) is movably clamped with a counterweight mounting plate (4), the outside of the counterweight mounting plate (4) is movably mounted with a fixing bolt (5) connected to the inside of the frame assembly (3), and the outside of the counterweight mounting plate (4) is movably mounted with a counterweight bolt (6).

2. The inertial navigation equipment load counterweight device according to claim 1, characterized in that: The frame assembly (3) comprises four adjustment sleeve rods (31), the upper and lower sides of the four adjustment sleeve rods (31) are fixedly connected to docking blocks (32), the inner sides of the docking blocks (32) are fixedly connected to adjustment sleeve rods (33), the outer sides of the docking blocks (32) are provided with a clamping groove (34), and the inner sides of the clamping groove (34) are provided with a fixing hole (35).

3. The inertial navigation equipment load counterweight device according to claim 2, characterized in that: The counterweight mounting plate (4) comprises a plate body (41) and threaded mounting holes (42), wherein the threaded mounting holes (42) are equidistantly arranged inside the plate body (41), and the counterweight bolts (6) are threadedly mounted inside the threaded mounting holes (42).

4. The inertial navigation equipment load counterweight device according to claim 1, characterized in that: The connecting base (1) comprises a shell (11) and a connecting base plate (12) fixedly mounted on the bottom of the connecting base (1); an electromagnet (13) is fixedly mounted on the inner side of the shell (11); and the fixing base (2) is adsorbed and connected to the top of the electromagnet (13).

5. The inertial navigation equipment load counterweight device according to claim 3, characterized in that: The first adjustment sleeve rod (31) is located between the docking blocks (32) and is arranged vertically, and the second adjustment sleeve rod (33) is located between the docking blocks (32) and is arranged horizontally.

6. The inertial navigation equipment load counterweight device according to claim 3, characterized in that: The size of the plate body (41) and the position of the threaded mounting hole (42) are adjusted according to the target inertial navigation device.

7. The inertial navigation equipment load counterweight device according to claim 3, characterized in that: The fixing bolts (5) are located at the four corners of the plate body (41) and are threadedly connected to the inside of the fixing holes (35).

8. The load counterweight device for an inertial navigation device according to claim 3, characterized in that: The fixing seat (2) is arranged at the bottom of the docking block (32).

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