Antenna transportation oil cylinder pressure relief protection device and transportation vehicle

Abstract

This invention discloses an antenna transport cylinder pressure relief protection device and a transport vehicle, including an antenna array, a lifting cylinder, a turntable, and a support protection device. One end of the antenna array is rotatably connected to the turntable, and the other end is connected to the turntable via the lifting cylinder. The lifting cylinder can drive the antenna array to switch between a working state and a transport state. The support protection device includes a fixed end, a follower end connected to the lifting cylinder, and a flexible sensing device. The probe and sensing end of the flexible sensing device are fixed to the follower end and the fixed end, respectively. When the probe triggers the sensing end, the set pressure of the lifting cylinder supporting the antenna array is released, causing the fixed end to support the antenna array through the follower end. In this invention, by setting up a flexible sensing device, the pressure that should support the antenna array can be relieved, and the cylinder thrust can be basically relieved during transport, which can significantly reduce the deformation and stress caused by the cylinder thrust on the frame, greatly improving the safety of antenna transport.

Description

Technical Field

[0001] This invention relates to the field of antenna transport protection devices, and more specifically to an antenna transport cylinder pressure relief protection device and a transport vehicle. Background Technology

[0002] Traditional antenna lifting and lowering mechanisms typically employ hydraulic cylinders, allowing for rapid switching between transport and operational states. However, as antenna diameters increase, the required thrust of these cylinders rises to hundreds of tons. Traditional antenna transport methods often involve adding transport supports at various points on the platform to withstand the weight of the antenna during transport. However, large-diameter antenna frames have an error margin of approximately 0.5 degrees each time they are lowered to the transport angle, and regardless of the angle, it's impossible to guarantee that the transport supports will completely dissipate the thrust from the hydraulic cylinders. Therefore, the transport supports only serve as auxiliary supports, essentially making the main hydraulic cylinder both the driving and primary support structure. Under these transport support conditions, the hydraulic cylinder thrust consistently acts as the primary support force, leaving the antenna frame under constant tension and deformation. This significantly increases the stress and deformation of the frame, drastically reducing the reliability and safety of transporting large-diameter antennas. Summary of the Invention

[0003] The technical problem to be solved by this invention is how to improve the reliability and safety of large-scale transportation.

[0004] The present invention solves the above-mentioned technical problems through the following technical means: an antenna transport cylinder pressure relief protection device, including an antenna array, a lifting cylinder, a turntable, and a support protection device. One end of the antenna array is rotatably connected to the turntable, and the other end is connected to the turntable through the lifting cylinder. The lifting cylinder can drive the antenna array to switch between working state and transport state. The support protection device includes a fixed end, a follower end connected to the lifting cylinder, and a flexible sensing device. The probe and sensing end of the flexible sensing device are fixed to the follower end and the fixed end, respectively. When the probe triggers the sensing end, the set pressure of the lifting cylinder supporting the antenna array is released, causing the fixed end to support the antenna array through the follower end.

[0005] As a preferred technical solution, the lifting cylinder is connected to the oil storage container through a pressure relief pipeline, which is equipped with a pressure relief valve and a damper.

[0006] As a preferred technical solution, the probe is a flexible component and can compensate for the angle difference of the antenna array under long span conditions.

[0007] As a preferred technical solution, the proximity switch and the probe are fixed on the same side of the follower end and the fixed end, respectively. The sensing end includes the proximity switch and the probe includes the sensing copper sheet.

[0008] As a preferred technical solution, a flip arm is fixedly connected to the end of the antenna array facing the lifting cylinder. The flip arm is rotatably connected to the telescopic end and the follower end of the lifting cylinder. The fixed end of the lifting cylinder is rotatably connected to the turntable through the turntable lug.

[0009] As a preferred technical solution, the follower end includes an upper support base, which includes a support base and an upper lug fixed to one end of the support base facing the antenna array.

[0010] As a preferred technical solution, the upper support is rotatably connected to the telescopic end of the lifting cylinder and the tilting arm via a pin.

[0011] As a preferred technical solution, the fixed end includes a lower support seat and a limiting seat that are fixedly connected. The limiting seat includes a pad, a baffle, a pad, and a limiting support seat. The top of the limiting support seat has a groove, the pad is placed in the groove, and the limiting support seat is connected and fastened to the pad through the baffle. The top of the pad is fixedly connected to the pad and the pad is fixedly connected to the pad.

[0012] As a preferred technical solution, the antenna transport cylinder pressure relief protection device also includes a working platform, which is rotatably connected to the turntable via a slewing bearing.

[0013] The present invention also provides a transport vehicle, including an antenna transport cylinder pressure relief protection device disposed on the transport vehicle, wherein the turntable of the antenna transport cylinder pressure relief protection device is fixedly connected to the transport vehicle.

[0014] The beneficial effects of this invention are as follows:

[0015] (1) In this invention, by setting up a flexible sensing device, the pressure that should support the antenna array can be relieved, and the hydraulic cylinder thrust can be basically relieved during transportation. This can significantly reduce the deformation and stress of the hydraulic cylinder thrust on the frame, and greatly improve the safety of antenna transportation.

[0016] (2) In this invention, the main cylinder is depressurized during transportation, so that the cylinder thrust is basically unloaded. Then, a suitable pipe diameter is selected in the pressure relief valve pipeline, and finally, a φ0.8mm damping hole is set. This can reliably and silently depressurize hundreds of tons of thrust, ensuring that the depressurization process is slow, stable, without impact or abnormal noise, and ensuring that the depressurization process is safe and reliable.

[0017] (3) In this invention, by setting up a flexible sensing copper sheet, the angle difference of the antenna array under the condition of large span can be compensated. Since the rigidity of the large array antenna is weak, it will deform when the span is large, resulting in the angle of the antenna before each transport and depressurization being inconsistent. Generally, there will be an error of tens of millimeters. The traditional rigid proximity switch can only ensure the triggering at a fixed position, while the flexible probe can ensure the triggering conditions of the proximity switch at different angles of the antenna each time without damaging the proximity switch. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the antenna transport cylinder pressure relief protection device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the support and protection device structure provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the lower support structure provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the upper support structure provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the limiting seat structure provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the flexible sensing device structure provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the lifting cylinder pressure relief pipeline structure provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the lifting cylinder structure provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the lifting cylinder extending as provided in an embodiment of the present invention; Figure 10 This is a schematic diagram of the retraction of the lifting cylinder provided in an embodiment of the present invention; Figure 11 This is a schematic diagram of the lifting cylinder depressurization provided in an embodiment of the present invention; Reference numerals: 1. Working platform; 2. Turntable; 3. Lifting cylinder; 4. Support and protection device; 5. Antenna array; 6. Moving carrier; 10. Flexible sensing device; 11. Lower support seat; 12. Limit seat; 13. Upper support seat; 14. Switch bracket; 15. Proximity switch; 16. Induction copper sheet; 17. Support seat; 18. Upper support lug; 19. Wooden block; 20. Baffle; 21. Pad; 22. Limit support seat; 23. Locking device; 24. Pressure relief valve; 25. Damping; 26. Balance valve; 27. Oil tank; 28. Oil inlet pipeline; 29. ​​Oil return pipeline; 30. Pressure relief pipeline. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] See Figure 1An antenna transport cylinder pressure relief protection device includes a working platform 1, a turntable 2, a lifting cylinder 3, a support protection device 4, an antenna array 5, and a mobile carrier 6. The working platform 1 is connected to the mobile carrier 6 via an adapter. The turntable 2 is rotatably connected to the working platform 1 via a slewing bearing. One end of the lifting cylinder 3 is rotatably connected to the turntable 2, and the other end of the lifting cylinder 3 is rotatably connected to the movable end of the support protection device 4. One end of the antenna array 5 is rotatably connected to the turntable 2 via an elevation lug, and the other end of the antenna array 5 extends toward the head of the mobile carrier 6. In this embodiment, the mobile carrier 6 is a transport vehicle. The other end of the antenna array 5 extends toward the front of the transport vehicle, and the other end of the antenna array 5 is rotatably connected to the movable end of the support protection device 4 via a flip arm. One end of the flip arm is welded and fixed to the antenna lug of the antenna array 5, and the other end of the flip arm is coaxially rotatably connected to the cylinder lug of the telescopic end of the lifting cylinder 3 and the movable end of the upper lug of the support protection device 4.

[0021] See Figure 2 The support and protection device 4 includes a lower support base 11, a limiting base 12, an upper support base 13, and a flexible sensing device 10. The end of the lower support base 11 facing the moving carrier 6, i.e. the end away from the upper support base 13, is fixedly connected to the moving carrier 6. The end of the lower support base 11 away from the moving carrier 6, i.e. the end facing the upper support base 13, is fixedly connected to the limiting base 12. The end of the upper support base 13 away from the limiting base 12 is rotatably connected to the lifting cylinder 3 and the end of the flipping arm away from the antenna array 5. The end of the upper support base 13 facing the limiting base 12 can abut against the limiting base 12.

[0022] See Figure 4 There are two upper support seats 13 with the same structure. The upper support seat 13 includes a support seat 17 and an upper support ear 18. The upper support ear 18 forms the upper support ear of the support protection device 4. In this embodiment, there are two upper support ears 18. Both upper support ears 18 are fixed on the top of the support seat 17, that is, the end of the support seat 17 away from the lower support seat 11. The upper support ears 18 are connected and fastened to the support seat 17 by bolts. The two upper support ears 18 are symmetrically arranged about the support seat 17. The upper support ears 18 are rotatably connected to the antenna support ear (not shown in the figure) at the bottom of the antenna array 5 and the cylinder support ear (not shown in the figure) at the end of the lifting cylinder 3 by pins. See Figure 5The limiting seat 12 includes a pad 19, a baffle 20, a pad 21, and a limiting support seat 22. The top of the limiting support seat 22 has a trapezoidal groove, making the limiting support seat 22 generally U-shaped. The pad 19 is fixed in the trapezoidal groove of the limiting support seat 22. The pad 19 is installed in the limiting support seat 22 with baffles 20 in both the front and rear directions. The baffles 20 are connected and fastened to the limiting support seat 22 by bolts. In this embodiment, the shape of the pad 19 is adapted to the trapezoidal groove. The pad 19 has a trapezoidal structure. The top of the pad 19 is fixedly connected to the pad 21. The pad 21 is made of stainless steel, which can reduce the frictional force of the upper support seat 13 shifting backward when depressurization occurs and reduce noise.

[0023] See Figure 3 The lower support seat 11 has a stool-shaped structure. The bottom of the lower support seat 11 is fixedly connected to the transport vehicle through a hinged hole bolt, and the top of the lower support seat 11 is connected and fastened to the limit support seat 22 through bolts.

[0024] See Figure 6 The flexible sensing device 10 includes a switch bracket 14, a proximity switch 15, and a sensing copper sheet 16. The switch bracket 14 is fixedly connected to one side of the limiting seat 12, the proximity switch 15 is fixed on the switch bracket 14, and the sensing copper sheet 16 is fixed to one side of the upper support seat 13, with the sensing copper sheet 16 located on top of the proximity switch 15. When the antenna array 5 is tilted to the transport state, the upper support 13 is about to contact the limit seat 12. When the flexible sensing device 10 receives the signal, the lifting cylinder 3 is activated to release pressure, which ensures that the thrust of the lifting cylinder 3 is basically unloaded. At this time, the stress deformation of the antenna array 5 is significantly reduced, greatly improving the transport reliability and safety of the antenna array. The upper support 13 is fully in contact with the limit seat 12, and the antenna array 5 is completely supported by the support protection device 4. The sensing copper sheet 16 is a flexible part, which can trigger the proximity switch 15 to light up under different positions. It can be coordinated by deformation without damaging the proximity switch 15, so that the proximity switch 15 can be triggered under different positions under the transport state of the antenna array 5.

[0025] It should be noted that the lower support seat 11 and the limiting seat 12 form the fixed end of the support protection device 4, and the upper support seat 13 forms the follower end of the support protection device 4.

[0026] See Figure 7 , Figure 8 The lifting cylinder 3 includes a locking device 23, a pressure relief valve 24, a damper 25, and a balance valve 26; in this embodiment, two lifting cylinders 3 are provided. The balance valve 26 and the pressure relief valve 24 are bolted to the lifting cylinder 3. The balance valve group includes two balance valves 26, and the pressure relief valve group includes two pressure relief valves 24. When the lifting cylinder 3 is running normally, the solenoid valve of the pressure relief valve 24 remains closed, and the two chambers of the lifting cylinder 3, namely the rod chamber and the rodless chamber, are isolated. When the lifting cylinder 3 needs to release pressure, the solenoid valve of the pressure relief valve 24 is energized and opened, and the two chambers of the lifting cylinder 3, namely the rod chamber and the rodless chamber, are interconnected. Under the action of external forces such as gravity, the hydraulic oil in the high-pressure chamber will enter the low-pressure chamber to complete the pressure relief function. Under the action of external forces such as gravity, the hydraulic oil in the rodless chamber of the hydraulic cylinder 3 flows to the rod chamber until the antenna block falls onto the support and protection device 4.

[0027] The pressure relief time can be controlled by adjusting the orifice size of damper 25. Pressure relief must be achieved before lifting cylinder 3 is fully retracted. The pressure relief valve 24 group uses a leak-free on / off valve with a leakage rate lower than that of balance valve 26, ensuring the safety of hydraulic cylinder 3 during operation.

[0028] The lifting cylinder 3 is connected to the oil tank 27 via an oil inlet pipe 28 and an oil return pipe 29. Both the oil inlet pipe 28 and the oil return pipe 29 are equipped with balance valves 26. (See reference...) Figure 9 When the extension end of the lifting cylinder 3 is extended, the oil inlet pipe 28 outputs oil from the rod chamber, and the oil return pipe 29 inputs oil to the rodless chamber; see reference Figure 10 When the extension and retraction end of the lifting cylinder 3 retracts, the oil inlet pipe 28 supplies oil to the rod chamber, and the oil return pipe 29 supplies oil to the rodless chamber. (See reference...) Figure 11 During depressurization, the return oil line 29 is connected to the inlet oil line 28 through the depressurization line 30; the rod chamber and the rodless chamber are connected through the depressurization valve 24, and the pressures of the rod chamber and the rodless chamber are the same, so there is no pressure difference and the rodless chamber will not exert thrust on the rod chamber. Control valves are provided on the inlet oil line 28, the return oil line 29, and the depressurization line 30 to control the opening and closing of the inlet oil line 28, the return oil line 29, and the depressurization line 30. It should be noted that before depressurization, the pressure in the rod chamber is less than the pressure in the rodless chamber.

[0029] When the antenna array 5 is retracted to the transport state, the flexible sensing device 10 is triggered to light up, the lifting cylinder 3 is activated, the locking device 23 is unlocked, and after unlocking, the pressure relief valve 24 is opened to start depressurization. Adding a φ0.8mm damper 25 after the pressure relief valve 24 can make the depressurization process stable and silent. It should be noted that the φ0.8mm hole is the optimal value. Through experiments, it was found that when the lifting cylinder 3 has finished depressurizing, the antenna array 5 is completely supported by the support protection device 4, that is, the upper support seat 13 is connected to the limit seat 12, and the thrust of the lifting cylinder 3 is basically unloaded. At this time, the stress deformation of the antenna array 5 is significantly reduced, thereby greatly improving the transport reliability and safety of the antenna array 5.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pressure relief protection device for an antenna transport cylinder, characterized in that, The device includes an antenna array, a lifting cylinder, a turntable, and a support and protection device. One end of the antenna array is rotatably connected to the turntable, and the other end is connected to the turntable via the lifting cylinder. The lifting cylinder can drive the antenna array to switch between working and transport states. The support and protection device includes a fixed end, a follower end connected to the lifting cylinder, and a flexible sensing device. The probe and sensing end of the flexible sensing device are fixed to the follower end and the fixed end, respectively. When the probe triggers the sensing end, it releases the set pressure of the lifting cylinder supporting the antenna array, causing the fixed end to support the antenna array through the follower end.

2. The antenna transport cylinder pressure relief protection device according to claim 1, characterized in that, The lifting cylinder is connected to the oil storage container through a pressure relief pipeline, which is equipped with a pressure relief valve and damping.

3. The antenna transport cylinder pressure relief protection device according to claim 1, characterized in that, The probe is a flexible component and can compensate for the angle difference of the antenna array under long span conditions.

4. The antenna transport cylinder pressure relief protection device according to claim 1, characterized in that, The proximity switch and the probe are fixed on the same side of the follower end and the fixed end, respectively. The sensing end includes the proximity switch and the probe includes the sensing copper sheet.

5. The antenna transport cylinder pressure relief protection device according to claim 1, characterized in that, A flip arm is fixedly connected to the end of the antenna array facing the lifting cylinder. The flip arm is rotatably connected to the telescopic end and the follower end of the lifting cylinder. The fixed end of the lifting cylinder is rotatably connected to the turntable through the turntable lug.

6. The antenna transport cylinder pressure relief protection device according to claim 5, characterized in that, The follower includes an upper support base, which includes a support base and an upper lug fixed to one end of the support base facing the antenna array.

7. The antenna transport cylinder pressure relief protection device according to claim 6, characterized in that, The upper support lug is rotatably connected to the telescopic end of the lifting cylinder and the tilting arm via a pin.

8. The antenna transport cylinder pressure relief protection device according to claim 1, characterized in that, The fixed end includes a lower support seat and a limiting seat that are fixedly connected. The limiting seat includes a pad, a baffle, a pad, and a limiting support seat. The top of the limiting support seat has a groove, the pad is placed in the groove, and the limiting support seat is connected and fastened to the pad through the baffle. The top of the pad is fixedly connected to the pad and the pad is fixedly connected to the pad.

9. The antenna transport cylinder pressure relief protection device according to claim 1, characterized in that, It also includes a working platform, which is rotatably connected to the turntable via a slewing bearing.

10. A transport vehicle, characterized in that, Includes the antenna transport cylinder pressure relief protection device as described in any one of claims 1-9.

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