CN-116665505-B - Six-degree-of-freedom flight simulation platform

Abstract

The invention provides a six-degree-of-freedom flight simulation platform which comprises a foundation, a foundation pit and a ground cage, wherein the foundation pit is arranged in the foundation pit, the ground cage is arranged at the bottom in the foundation pit, three embedded plates are fixedly arranged on the ground cage, each embedded plate is provided with a driving assembly, the upper ends of the driving assemblies are commonly connected with an upper supporting platform, a plurality of foundation bolts are fixedly arranged on the embedded plates, a plurality of nuts are sleeved on each foundation bolt in a threaded manner, and the upper supporting platform is used for bearing and connecting a tested flight carrier. According to the invention, the lower end of the foundation bolt is hooked on the ground cage by adopting the foundation bolt and the nuts, and then the nuts are screwed on the upper end of the foundation bolt, so that the embedded plate and the ground cage can be quickly connected and fixed, the foundation bolts are symmetrically distributed on two sides of the embedded plate, the stress is uniform, the fixing is stable, and three nuts are screwed on the foundation bolt, the fixing effect is good, and the embedded plate cannot fall off.

Inventors

• LI XIAOXUE
• HAO YUWEN

Assignees

• 中国人民解放军总医院

Dates

Publication Date

20260512

Application Date

20230519

Claims (6)

1. 1. The six-degree-of-freedom flight simulation platform is characterized by comprising a foundation, a foundation pit arranged in the foundation pit and a ground cage arranged at the bottom in the foundation pit, wherein three embedded plates are fixedly arranged on the ground cage, each embedded plate is provided with a driving assembly, and the upper ends of the driving assemblies are connected with an upper supporting platform together; A plurality of anchor bolts are fixed on the embedded plate, and a plurality of nuts are sleeved on each anchor bolt in a threaded manner; The upper supporting platform is used for bearing and connecting the detected flight carrier; the device also comprises a damping seat plate for damping, and the detected flying carrier is arranged on the supporting platform through the damping seat plate; The vibration-damping seat board comprises an upper seat board and a lower seat board, wherein the upper seat board can be arranged on the lower seat board in a sliding way along the X-axis direction; An oil-gas damping system is arranged between the upper seat plate and the lower seat plate and comprises an oil cylinder, an oil storage tank, a first pressure valve and an oil return pipeline; the cylinder comprises a cylinder body, a piston and a piston rod, wherein the cylinder body is fixedly connected with the lower seat plate, and the piston rod is fixedly connected with the upper seat plate; The rod cavity and the rodless cavity of the oil cylinder are respectively connected with the oil storage tank through an oil return pipeline, and a first pressure valve is arranged on the oil return pipeline; The oil return pipeline comprises a first oil return branch and a second oil return branch; the rodless cavity is connected with the oil storage tank through a second oil return branch; the oil return system further comprises an oil return main path, wherein the first oil return branch path and the second oil return branch path are connected with one end of the oil return main path, and the other end of the oil return main path is connected with an oil storage tank; the first pressure valve is arranged on the oil return main path; The device also comprises a first oil supply branch, a second oil supply branch and an oil supply main path, wherein one end of the first oil supply branch is connected with the rod cavity, and the other end of the first oil supply branch is connected with the oil supply main path; The device also comprises a first control valve, a second control valve and an inertia block; the first control valve and the second control valve are respectively arranged on the first oil return branch and the second oil return branch; the inertia block is arranged on the lower seat plate in a freely sliding manner along the X direction; The device also comprises a third oil supply branch and a fourth oil supply branch, wherein one end of the third oil supply branch is connected with the oil supply main path, the other end of the third oil supply branch is connected with the rod cavity, one end of the fourth oil supply branch is connected with the oil supply main path, and the other end of the fourth oil supply branch is connected with the rodless cavity.
2. 2. The six-degree-of-freedom flight simulation platform of claim 1, wherein the driving assembly comprises two lower hinge bases fixed on the embedded plate, lower hinge bases are all rotationally connected with lower hinge parts at the upper ends, electric cylinders are fixedly connected with the upper ends of the lower hinge parts, upper hinge parts are fixedly connected with the upper ends of the electric cylinders, upper hinge bases are rotationally connected with the upper ends of the two upper hinge parts, the top parts of the upper hinge bases are fixedly connected with the same connecting plate, and the connecting plate is fixedly mounted at the bottom of the upper supporting platform.
3. 3. The six degree-of-freedom flight simulation platform of claim 2 wherein three sets of upper hinge seats are evenly spaced 120 degrees around a circumference of 2600mm diameter and three sets of lower hinge seats are evenly spaced 120 degrees around a circumference of 3200mm diameter.
4. 4. The six degree-of-freedom flight simulation platform of claim 1 wherein the number of anchor bolts is 8 and the number of nuts on each anchor bolt is 3.
5. 5. The six degree of freedom flight simulation platform of claim 1 wherein the upper support platform is welded using channel steel and is comprised of a zigzag frame and a plurality of cross beams secured to the inner walls of the zigzag frame.
6. 6. The six degree-of-freedom flight simulation platform of claim 1 wherein the ground cage is Y-shaped.

Description

Six-degree-of-freedom flight simulation platform Technical Field The invention relates to the technical field of motion state simulation of flight vehicles such as airplanes, in particular to a six-degree-of-freedom flight simulation platform. Background The multi-degree-of-freedom motion platform is test equipment for simulating the motion jolt state of a flying carrier such as an airplane, and the standard multi-degree-of-freedom motion platform is mainly used for heavy load lifting, so that equipment or other objects on the platform can be rapidly and flexibly moved to a proper position through the change of a plurality of degrees of freedom. However, when the embedded plate of the existing multi-degree-of-freedom motion platform is connected with the ground cage, the embedded plate is connected by bolts, the strength is high, but the structure and the ground cage are not matched, the operation is troublesome, the embedded plate cannot be quickly installed and fixed, and the stress load is uneven. Disclosure of Invention The invention aims to provide a six-degree-of-freedom flight simulation platform so as to solve the technical problems in the prior art. In order to solve the technical problems, the six-degree-of-freedom flight simulation platform provided by the invention comprises a foundation, a foundation pit arranged in the foundation pit and a ground cage arranged at the bottom in the foundation pit, wherein three embedded plates are fixedly arranged on the ground cage, each embedded plate is provided with a driving assembly, and the upper ends of the driving assemblies are commonly connected with an upper supporting platform; A plurality of anchor bolts are fixed on the embedded plate, and a plurality of nuts are sleeved on each anchor bolt in a threaded manner; the upper supporting platform is used for bearing and connecting the detected flight carrier. Preferably, the driving assembly comprises two lower hinge bases fixed on the embedded plate, the upper ends of the lower hinge bases are all rotationally connected with lower hinge parts, the upper ends of the lower hinge parts are fixedly connected with electric cylinders, the upper ends of the electric cylinders are fixedly connected with upper hinge parts, the upper ends of the upper hinge parts are rotationally connected with upper hinge bases, the upper hinge bases are two, the top parts of the upper hinge bases are fixedly connected with the same connecting plate, and the connecting plate is fixedly mounted at the bottom of the upper supporting platform. Preferably, three groups of upper hinge seats are uniformly distributed at 120 degrees along the circumference with the diameter of 2600mm, and three groups of lower hinge seats are uniformly distributed at 120 degrees along the circumference with the diameter of 3200 mm. Preferably, the number of the foundation bolts is 8, the model is M30X500, and the number of nuts on each foundation bolt is 3. Preferably, the upper supporting platform is formed by welding channel steel, and is composed of a U-shaped frame and a plurality of cross beams fixed on the inner wall of the U-shaped frame, and the upper supporting platform is made of Q235. Preferably, the ground cage is rolled by HRB335 phi 16 steel bars. Preferably, the depth of the foundation pit is 1200mm. Preferably, the ground cage is Y-shaped. Preferably, the external dimension of the upper supporting platform is 6000mm4130mm。 Preferably, the device further comprises a shock-absorbing seat plate for shock absorption, and the detected flying carrier is arranged on the supporting platform through the shock-absorbing seat plate. Preferably, the shock absorbing seat board comprises an upper seat board and a lower seat board, wherein the upper seat board can be arranged on the lower seat board in a sliding manner along the X-axis direction (namely, the front-back direction), the tested flying carrier is fixedly arranged on the upper seat board, and the lower seat board is fixedly connected with the supporting platform through a fastener. Preferably, an oil-gas damping system is arranged between the upper seat plate and the lower seat plate, and comprises an oil cylinder, an oil storage tank, a first pressure valve and an oil return pipeline; the cylinder comprises a cylinder body, a piston and a piston rod, wherein the cylinder body is fixedly connected with the lower seat plate, and the piston rod is fixedly connected with the upper seat plate; the oil cylinder is characterized in that a rod cavity and a rodless cavity of the oil cylinder are connected with the oil storage tank through oil return pipelines respectively, and a first pressure valve is arranged on the oil return pipelines. Preferably, the oil return pipeline comprises a first oil return branch and a second oil return branch; The rod cavity is connected with the oil storage tank through a first oil return branch, and the rodless cavity is connected with the oil storage tank thro