Shockproof support of fan cabin top medium-load holder

Abstract

The invention relates to the technical field of cradle head supports, in particular to a shockproof support of a middle-load cradle head on the top of a fan cabin. A plurality of elastic pieces are fixedly connected to the bottom plate; the top ends of the elastic pieces are fixedly connected with a hollow block; each rod column is in sealed sliding connection with the hollow block; the hydraulic oil filled in the hollow block is cooled through the arc-shaped plates, so that the damping performance of the hydraulic oil is ensured, when a fan cabin drives the bottom plate to vibrate, the bottom plate intermittently extrudes the arc-shaped plates, hot air in a gap between every two adjacent arc-shaped plates is extruded out, cold air is sucked in, and the cooling effect of the arc-shaped plates on the hydraulic oil is improved advantageously; as the vibration is enhanced, the air exchange frequency in the gap is increased, the heat dissipation and cooling effects on the hydraulic oil are better, the problem that the hydraulic oil is too hot due to too strong vibration is avoided, and the arc-shaped plate is further used for assisting in damping, so that the damping effect on the cradle head equipment is improved.

Description

Technical Field

[0001] This invention relates to the technical field of gimbal supports. More specifically, this invention relates to a shock-absorbing support for a mid-mounted gimbal on the top of a wind turbine nacelle. Background Technology

[0002] In existing wind power generation technologies, to achieve real-time monitoring of wind turbine operation status, surrounding environment, or remote maintenance, a pan-tilt unit with camera or sensor functions is usually installed on the top of the nacelle. However, wind turbines inevitably generate mechanical vibrations during operation, and if these vibrations are directly transmitted to the pan-tilt unit, they will seriously affect its imaging stability and control accuracy.

[0003] To address this, existing solutions typically involve adding a shock-absorbing bracket to the top of the nacelle and fixing the gimbal equipment to this bracket. The built-in damping modules (such as rubber pads, springs, or hydraulic dampers) absorb and isolate vibration energy, ensuring the normal operation of the gimbal equipment. However, in windy conditions, wind turbines often operate at high power, significantly increasing the overall vibration intensity and leading to a substantial increase in the dynamic load on the shock-absorbing bracket. Prolonged high-load operation generates a large amount of heat in the damping modules. If the temperature of the damping components becomes too high, their material properties may deteriorate, altering their damping characteristics and causing a significant decrease or even failure in damping effectiveness. Ultimately, this affects the stability and observation accuracy of the gimbal equipment, and in severe cases, may even shorten its lifespan. Summary of the Invention

[0004] To overcome the shortcomings of wind turbines often operating at high power under windy conditions, which causes the damping module to overheat, resulting in a significant decrease or even failure of its damping effect, and ultimately affecting the stability and observation accuracy of the gimbal, this invention provides a shock-resistant bracket for a mid-mounted gimbal on the top of a wind turbine nacelle.

[0005] The technical solution of this invention is as follows: a shock-absorbing bracket for a gimbal mounted on the top of a wind turbine nacelle, comprising a base plate and several rods fixed to the base plate; characterized in that: it further comprises several elastic elements fixed to the base plate; a hollow block is fixedly connected to the top of the elastic elements; each rod is slidably connected to the hollow block in a sealed manner; a piston plate is slidably connected to the inner side of the hollow block, and the piston plate is fixedly connected to the rod; several fine holes are provided on the piston plate; a cavity one is formed between the lower side of the piston plate and the hollow block; a cavity two is formed between the upper side of the piston plate and the hollow block; cavities one and two are filled with a medium that can flow through the fine holes; several arc-shaped plates are spaced apart on the bottom wall of the hollow block, and the bottom end of the arc-shaped plates is connected to the base plate; the arc-shaped plates are made of an elastic thermally conductive material; a connecting plate one for mounting the gimbal equipment is provided on the top of the hollow block.

[0006] Furthermore, the shock-absorbing bracket also includes an adjustment assembly for adjusting the angle of the connecting plate one; the adjustment assembly includes a connecting plate two, a DD motor, a connecting plate three, a connecting block one, an electric push rod, and a connecting block two; the top of the hollow block is fixedly connected to the connecting plate two; the DD motor is fixedly connected to the connecting plate two; the movable end of the DD motor is fixedly connected to the connecting plate three; several connecting blocks one are fixedly connected at intervals on the connecting plate three; an electric push rod is rotatably connected to each connecting block one; the movable end of each electric push rod is rotatably connected to a connecting block two, and the connecting block two is fixedly connected to the middle of the connecting plate one; one side edge of the connecting plate one is rotatably connected to the connecting plate three.

[0007] Furthermore, the hollow block is made of a thermally conductive material.

[0008] Furthermore, the shock-absorbing bracket also includes an irregularly shaped rubber cylinder disposed between the base plate and the hollow block; the irregularly shaped rubber cylinder is arranged vertically through the middle of the arc-shaped plate; the side wall of the irregularly shaped rubber cylinder is provided with air holes, which can connect the gap of the arc-shaped plate with the interior of the irregularly shaped rubber cylinder.

[0009] Furthermore, the shock-absorbing bracket also includes a protective component, which includes a connecting block three and a spring telescopic rod; several connecting blocks three are slidably connected laterally on the base plate, and the connecting blocks three are fixedly connected to the lower end of the corresponding arc-shaped plate; several spring telescopic rods are fixedly connected to the base plate, and the movable end of the spring telescopic rod is fixedly connected to the corresponding connecting block three.

[0010] Furthermore, the surface of the curved plate has several long grooves along its own longitudinal direction.

[0011] Furthermore, the anti-seismic support also includes a protective net; the protective net is installed around the gap between the base plate and the hollow block.

[0012] Furthermore, the base plate, hollow block, connecting plate one, connecting plate two, and connecting plate three are all made of rust-proof material.

[0013] Furthermore, heat dissipation holes are provided on the connecting plate.

[0014] Furthermore, an angle sensor is installed on the connecting plate.

[0015] The beneficial effects are as follows: First, the curved plate dissipates heat and cools the hydraulic oil filled inside the hollow block, ensuring the shock absorption performance of the hydraulic oil. When the fan nacelle drives the base plate to vibrate, the base plate will intermittently squeeze the curved plate, squeezing out the hot air in the gap between two adjacent curved plates and drawing in cold air, which is beneficial to improving the heat dissipation and cooling effect of the curved plate on the hydraulic oil. Moreover, as the vibration intensifies, the air exchange frequency in the gap also increases, and the heat dissipation and cooling effect on the hydraulic oil is stronger, avoiding the problem of hydraulic oil overheating due to excessive vibration, thus avoiding significant attenuation or failure of the shock absorption effect. In addition, the curved plate is also used for auxiliary shock absorption, which is beneficial to improving the shock absorption effect on the gimbal equipment.

[0016] Second, by using irregularly shaped rubber cylinders to enhance airflow at the gap between adjacent arc-shaped plates, the heat dissipation effect of the arc-shaped plates is improved, thereby improving the cooling effect of the arc-shaped plates on the hydraulic oil, so as to ensure the shock absorption effect of the gimbal.

[0017] Third, in case of abnormal vibration, the arc plate is protected by the cooperation of connecting block three and elastic telescopic rod to prevent the arc plate from being crushed. In addition, the arc plate, connecting block three and elastic telescopic rod work together to buffer the abnormal vibration.

[0018] Fourth, the long grooves further guide the bending direction of the arc plates, ensuring that all arc plates bend in the same direction, thus avoiding the problem of collision damage caused by adjacent arc plates bending towards each other. In addition, the long grooves on the arc plates increase the contact area between the arc plates and the air, which also helps to improve the heat dissipation and cooling effect of the arc plates on the hydraulic oil, thereby ensuring the shock absorption effect of the gimbal.

[0019] 5. Use protective netting to intercept debris and prevent it from getting stuck in the gap between the base plate and the hollow block, thus affecting the shock absorption and heat dissipation of the anti-vibration bracket. Attached Figure Description

[0020] Figure 1 This invention shows a schematic diagram of the anti-vibration support structure of the mid-mounted gimbal at the top of the wind turbine nacelle;

[0021] Figure 2 The front view of the anti-vibration bracket of the wind turbine nacelle top mid-mounted gimbal of the present invention is shown;

[0022] Figure 3 A schematic diagram of the structure of the rod and elastic element of the present invention is shown;

[0023] Figure 4 A schematic diagram of the piston plate of the present invention is shown;

[0024] Figure 5 A schematic diagram of the irregularly shaped rubber tube of the present invention is shown;

[0025] Figure 6 A schematic diagram of the distribution of the arc-shaped plates of the present invention is shown;

[0026] Figure 7 The present invention is shown. Figure 5 Enlarged view of point A in the middle;

[0027] Figure 8 A partially enlarged view of the arc-shaped plate of the present invention is shown.

[0028] Parts and their numbers in the diagram: 1-Base plate, 2-Rod column, 3-Elastic component, 4-Hollow block, 5-Piston plate, 6-Connecting plate one, 7-Arc plate, 201-Connecting plate two, 202-DD motor, 203-Connecting plate three, 204-Connecting block one, 205-Electric push rod, 206-Connecting block two, 207-Irregularly shaped rubber cylinder, 208-Connecting block three, 209-Elastic telescopic rod, 2010-Protective net, 91-Fine hole, 92-Cavity one, 93-Cavity two, 94-Air hole, 95-Long groove. Detailed Implementation

[0029] The preferred technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] Example 1: A shock-absorbing bracket for a mid-mounted gimbal on the top of a wind turbine nacelle, such as... Figures 1-8 As shown, the device includes a base plate 1 and rods 2; four rods 2 are welded to the base plate 1; it also includes elastic elements 3, hollow blocks 4, piston plates 5, connecting plates 6, arc-shaped plates 7, and adjusting components; four elastic elements 3 are fixed to the base plate 1; hollow blocks 4 are fixed to all elastic elements 3; each rod 2 is slidably connected to the hollow block 4; piston plates 5 are fixed to all rods 2, and are slidably connected to the hollow blocks 4; eight small holes 91 are provided on the piston plate 5; a cavity 92 is formed between the lower side of the piston plate 5 and the hollow block 4; a cavity 93 is formed between the upper side of the piston plate 5 and the hollow block 4; cavity 92 communicates with cavity 93 through the small holes 91; a connecting plate 6 is connected to the hollow block 4; several arc-shaped plates 7 are fixed to the hollow block 4 and are connected to the base plate 1; the arc-shaped plates 7 are made of heat-conducting material; and adjusting components are connected to the hollow block 4.

[0031] The adjustment assembly includes a second connecting plate 201, a DD motor 202, a third connecting plate 203, a first connecting block 204, an electric push rod 205, and a second connecting block 206. The second connecting plate 201 is bolted to the hollow block 4. The DD motor 202 is bolted to the second connecting plate 201. The movable end of the DD motor 202 is bolted to the third connecting plate 203. Two first connecting blocks 204 are bolted to the third connecting plate 203. An electric push rod 205 is rotatably connected to each first connecting block 204. Two second connecting blocks 206 are bolted to each first connecting plate 6, and the second connecting block 206 is rotatably connected to the movable end of the corresponding electric push rod 205. The first connecting plate 6 is rotatably connected to the third connecting plate 203.

[0032] Hollow block 4 is made of heat-conducting material, and the heat of the hydraulic oil can be conducted to the external environment through hollow block 4.

[0033] It also includes an irregularly shaped rubber cylinder 207; the irregularly shaped rubber cylinder 207 is fixedly connected between the bottom plate 1 and the hollow block 4.

[0034] It also includes a protective component, which includes a connecting block 3 208 and a spring telescopic rod 209; several connecting blocks 3 208 are slidably connected on the base plate 1, and the connecting blocks 3 208 are fixedly connected to the lower end of the corresponding arc plate 7; several spring telescopic rods 209 are fixedly connected on the base plate 1, and the movable end of the spring telescopic rod 209 is fixedly connected to the corresponding connecting block 3 208.

[0035] Several long grooves 95 are provided on the curved plate 7.

[0036] First, the base plate 1 is installed on the top of the wind turbine nacelle. Then, the gimbal is installed on the connecting plate 6. The DD motor 202 drives the connecting plate 203 and its parts to rotate, thereby adjusting the azimuth angle of the gimbal. At the same time, the electric push rod 205 extends or retracts, causing the electric push rod 205 to drive the connecting plate 6 to rotate upward or downward through the connecting block 206. During this process, the connecting block 204, the electric push rod 205 and the connecting block 206 rotate adaptively relative to each other. The connecting plate 6 drives the gimbal to rotate upward or downward, thereby adjusting the tilt angle of the gimbal. After that, the surrounding environment is monitored through the gimbal.

[0037] The vibration generated by the wind turbine is transmitted to the base plate 1, causing the base plate 1 to drive the rod 2 to move up and down reciprocally and intermittently compress the elastic element 3. The rod 2 drives the piston plate 5 to slide up and down reciprocally in the hollow block 4, so that the hydraulic oil in the first cavity 92 and the second cavity 93 can be exchanged through the fine hole 91. When the high viscosity hydraulic oil passes through the small hole 91, it will generate a lot of resistance, which will convert kinetic energy into internal energy, causing the hydraulic oil temperature to rise, thereby reducing the vibration energy and achieving the vibration reduction effect.

[0038] During windy weather, the increased power output of the wind turbine leads to increased vibration intensity, causing a significant rise in hydraulic oil temperature. The viscosity of the high-temperature hydraulic oil decreases drastically, resulting in reduced resistance as it passes through the fine orifice 91, thus diminishing its damping effect. Therefore, an arc-shaped plate 7 is installed on the bottom wall of the hollow block 4. This arc-shaped plate 7 acts as a heat dissipation fin on the surface of the hollow block 4. During damping, the heat from the hydraulic oil is conducted through the hollow block 4 to the arc-shaped plate 7, and then dissipated into the external environment through the arc-shaped plate 7, achieving a cooling effect and ensuring its damping performance. Simultaneously, the arc-shaped plate 7 is made of an elastic material. During damping, the base plate 1 compresses the arc-shaped plate 7, causing it to deform elastically, thus providing auxiliary damping and improving the damping effect on the gimbal. Furthermore, a long, narrow channel is formed between adjacent arc-shaped plates 7, the base plate 1, and the hollow block 4. During damping, the base plate 1 compresses the arc-shaped plate 7... The pressure compresses the elongated channel, squeezing out the hot air inside. When the arc plate 7 rebounds, the elongated channel returns to its original shape, allowing cold air from the outside to be drawn into it. At this time, the arc plate 7 comes into contact with the cold air, quickly transferring its heat to the cold air, thus improving heat dissipation efficiency. In use, the arc plate 7 dissipates heat and cools the hydraulic oil to ensure its shock absorption performance. When the wind turbine drives the base plate 1 to vibrate, the base plate 1 intermittently compresses the arc plate 7, squeezing out the hot air in the gap between two adjacent arc plates 7 and drawing in cold air. This helps improve the cooling effect of the arc plate 7 on the hydraulic oil. As the vibration intensifies, the air exchange frequency in the gap also increases, resulting in a stronger cooling effect on the hydraulic oil. This avoids the problem of the hydraulic oil overheating due to excessive vibration, thus preventing any impact on the shock absorption operation. Furthermore, the arc plate 7 also assists in shock absorption, which helps improve the shock absorption effect on the gimbal.

[0039] During the shock absorption process, the relatively long arc plate 7 results in excessively long gaps between adjacent arc plates 7, leading to poor airflow in the gaps. Therefore, the arc plate 7 is cut off in the middle, and a shaped rubber cylinder 207 is installed in the middle of the base plate 1. During the shock absorption process, the base plate 1 compresses the shaped rubber cylinder 207, causing the cold air in the shaped rubber cylinder 207 to flow into the gap through the air hole 94 and expelling the hot air in the gap. This improves the airflow in the gap and thus enhances the heat dissipation effect of the arc plate 7. In use, the shaped rubber cylinder 207 enhances the airflow at the gaps between adjacent arc plates 7, thereby improving the heat dissipation effect of the arc plate 7 and further improving the cooling effect of the arc plate 7 on the hydraulic oil, ensuring the shock absorption effect on the gimbal.

[0040] When the wind turbine malfunctions, its vibration increases significantly, causing the base plate 1 to bend the arc-shaped plate 7. Therefore, a protective component is installed on the base plate 1. When the wind turbine malfunctions, the base plate 1 moves upward and compresses the arc-shaped plate 7. When the arc-shaped plate 7 is compressed to its limit, it can no longer bend. At this point, the arc-shaped plate 7, through the reaction force, drives the connecting block 208 to move laterally and compresses the elastic telescopic rod 209, causing the lower end of the arc-shaped plate 7 to bend towards the elastic... The telescopic rod 209 moves in a certain direction, which reduces the bending degree of the arc plate 7, thereby preventing the arc plate 7 from being crushed. The arc plate 7, the connecting block 3 208, and the elastic telescopic rod 209 work together to buffer abnormal vibrations. In use, when abnormal vibrations occur, the connecting block 3 208 and the elastic telescopic rod 209 work together to protect the arc plate 7 and prevent it from being crushed. The arc plate 7, the connecting block 3 208, and the elastic telescopic rod 209 work together to buffer abnormal vibrations.

[0041] Example 2, based on Example 1, such as Figure 1 and Figure 2 As shown, it also includes a protective net 2010; the protective net 2010 is fixed between the base plate 1 and the hollow block 4, and the protective net 2010 intercepts external debris.

[0042] The base plate 1, hollow block 4, connecting plate 1 6, connecting plate 201 and connecting plate 3 203 are all made of rust-proof material to prevent rust and improve service life.

[0043] The connecting plate 6 has heat dissipation holes. When the gimbal is attached and installed on the connecting plate 6, some of the heat generated by the gimbal can be dissipated through the heat dissipation holes.

[0044] A tilt sensor is installed on the connecting plate 6 to monitor the tilt angle of the connecting plate 6, thereby monitoring the tilt angle of the gimbal.

[0045] During the extrusion process of the arc plate 7, its curvature guides the bending direction, preventing adjacent arc plates 7 from bending towards each other and colliding. At the same time, long grooves 95 are opened on the arc plate 7, which further guide the bending direction of the arc plate 7, ensuring that all arc plates 7 always bend in the same direction, avoiding the problem of damage caused by collisions between adjacent arc plates 7 bending towards each other. Furthermore, after opening long grooves 95 on the arc plate 7, the contact area between the arc plate 7 and the air increases, which helps to improve the heat dissipation and cooling effect of the arc plate 7 on the hydraulic oil, thus ensuring the shock absorption effect of the gimbal.

[0046] During the shock absorption process, if external debris drifts into the gap between the base plate 1 and the hollow block 4, it will jam the base plate 1 and the hollow block 4, thus causing the shock absorption to fail. Therefore, a protective net 2010 is installed between the base plate 1 and the hollow block 4 to intercept the debris and prevent it from getting stuck in the gap between the base plate 1 and the hollow block 4 and affecting the shock absorption.

[0047] Those skilled in the art should understand that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A shockproof support for a payload holder in a fan engine nacelle roof, comprising a base plate (1) and a plurality of posts (2) fixed to the base plate (1); characterized in that: It also includes several elastic elements (3) fixed to the base plate (1); a hollow block (4) is fixed to the top of the elastic elements (3); each rod (2) is slidably connected to the hollow block (4); a piston plate (5) is slidably connected to the inside of the hollow block (4), and the piston plate (5) is fixed to the rod (2); several fine holes (91) are opened on the piston plate (5); a cavity (92) is formed between the lower side of the piston plate (5) and the hollow block (4); A cavity two (93) is formed between the upper side of the plug plate (5) and the hollow block (4); the cavity one (92) and the cavity two (93) are filled with a medium that can flow through the fine hole (91); several arc-shaped plates (7) are distributed at intervals on the bottom wall of the hollow block (4), and the bottom end of the arc-shaped plate (7) is connected to the bottom plate (1); the arc-shaped plate (7) is made of an elastic heat-conducting material; a connecting plate one (6) for installing the gimbal equipment is provided on the top of the hollow block (4).

2. The anti-vibration bracket for the mid-mounted gimbal on the top of a wind turbine nacelle according to claim 1, characterized in that: The shock-absorbing bracket also includes an adjustment assembly for adjusting the angle of the connecting plate 1 (6); the adjustment assembly includes a connecting plate 2 (201), a DD motor (202), a connecting plate 3 (203), a connecting block 1 (204), an electric push rod (205), and a connecting block 2 (206); the top of the hollow block (4) is fixedly connected to the connecting plate 2 (201); the DD motor (202) is fixedly connected to the connecting plate 2 (201); the movable end of the DD motor (202) is fixedly connected to the connecting plate 3 (203); several connecting blocks 1 (204) are fixedly connected at intervals on the connecting plate 3 (203); an electric push rod (205) is rotatably connected to each connecting block 1 (204); the movable end of each electric push rod (205) is rotatably connected to a connecting block 2 (206), and the connecting block 2 (206) is fixedly connected to the middle of the connecting plate 1 (6); one side edge of the connecting plate 1 (6) is rotatably connected to the connecting plate 3 (203).

3. The anti-vibration bracket for the mid-mounted gimbal on the top of a wind turbine nacelle according to claim 1, characterized in that: Hollow block (4) is set as a thermally conductive material.

4. The anti-vibration bracket for the mid-mounted gimbal on the top of a wind turbine nacelle according to claim 1, characterized in that: The shock-absorbing bracket also includes a shaped rubber cylinder (207) set between the base plate (1) and the hollow block (4); the shaped rubber cylinder (207) is arranged vertically through the middle of the arc plate (7); the side wall of the shaped rubber cylinder (207) is provided with air holes (94), and the air holes (94) can connect the gap of the arc plate (7) with the interior of the shaped rubber cylinder (207).

5. The anti-vibration bracket for the mid-mounted gimbal on the top of a wind turbine nacelle according to claim 1, characterized in that: The shock-absorbing bracket also includes a protective component, which includes a connecting block three (208) and an elastic telescopic rod (209); several connecting blocks three (208) are slidably connected to the base plate (1), and the connecting blocks three (208) are fixed to the lower end of the corresponding arc plate (7); several elastic telescopic rods (209) are fixed to the base plate (1), and the movable end of the elastic telescopic rod (209) is fixed to the corresponding connecting block three (208).

6. The anti-vibration bracket for the mid-mounted gimbal on the top of a wind turbine nacelle according to claim 1, characterized in that: The surface of the arc plate (7) has several long grooves (95) along its own longitudinal direction.

7. The anti-vibration bracket for the mid-mounted gimbal on the top of a wind turbine nacelle according to claim 1, characterized in that: The shock-absorbing support also includes a protective net (2010); the protective net (2010) is placed around the gap between the base plate (1) and the hollow block (4).

8. The anti-vibration bracket for the mid-mounted gimbal at the top of a wind turbine nacelle according to claim 2, characterized in that: The base plate (1), hollow block (4), connecting plate one (6), connecting plate two (201) and connecting plate three (203) are all made of rust-proof material.

9. The anti-vibration bracket for the mid-mounted gimbal on the top of a wind turbine nacelle according to claim 8, characterized in that: The connecting plate (6) has heat dissipation holes.

10. A shock-absorbing bracket for a mid-mounted gimbal on the top of a wind turbine nacelle according to any one of claims 1-9, characterized in that: An inclination sensor is installed on the connecting plate (6).

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