Ultra-large torque main shaft hydraulic locking device

Abstract

The utility model relates to the technical field of hydraulic locking devices, and discloses an ultra-large torque main shaft hydraulic locking device which comprises a main shaft body, a locking mechanism is installed on the surface of the main shaft body, a vertical plate is fixedly connected to the tail end of the main shaft body, and a base is fixedly connected to the bottom of the vertical plate. The surface of the base is fixedly connected with a water cooling box. According to the ultra-large torque main shaft hydraulic locking device, through the arrangement of the locking mechanism, when the ultra-large torque main shaft hydraulic locking device is used, a main shaft body is located between two friction blocks, then a double-end hydraulic rod at the bottom is started, and the double-end hydraulic rod stretches out and draws back and drives extending blocks on the two sides to move relatively; furthermore, the friction blocks on the sides, connected with the semi-rings, of the tops of the extension blocks move, the main shaft body in the middle is clamped inside, the super-large torque borne by the main shaft can be effectively resisted by means of friction force generated by the friction blocks and the surface of the main shaft body, and reliable locking of the main shaft is achieved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic locking device technology, and in particular to a high torque spindle hydraulic locking device. Background Technology

[0002] With the increasing global demand for clean energy, offshore wind power, as a sustainable energy solution, is experiencing rapid development. Compared to onshore wind power, offshore wind energy resources are more abundant and stable, and it does not occupy valuable land resources, resulting in a smaller environmental impact. In recent years, offshore wind turbines have been developing towards larger sizes and higher power outputs, with single-unit capacity continuously increasing. 18MW and above large-capacity offshore semi-direct-drive wind turbines have become a new hot spot in the industry. These units can significantly improve power generation efficiency, reduce unit power generation costs, and enhance the economic benefits and competitiveness of offshore wind power projects. As the unit capacity increases, the blade sweep area and captured wind energy increase significantly, and the torque that the main shaft needs to transmit also rises sharply. Under rated operating conditions, the torque borne by the 18MW main shaft far exceeds that of previous small and medium-capacity units. Under dynamic conditions such as strong winds, gusts, and pitch control, the torque fluctuation range is larger and the frequency of change is faster, placing unprecedentedly high demands on the fixing and locking of the main shaft.

[0003] Traditional mechanical locking devices, such as keyed connections and splined connections, have significant limitations when dealing with ultra-high torque. Under prolonged heavy torque loads, keyed connections are prone to wear and loosening between the key and keyway, leading to increased clearance and affecting the transmission accuracy and stability of the main shaft. In severe cases, this can even cause key breakage and equipment failure. While splined connections have relatively high load-bearing capacity, under complex loads and frequent alternating stresses, the spline teeth can also experience fatigue wear and spalling, reducing the locking effect and compromising the long-term reliable operation of the wind turbine. Therefore, a hydraulic locking device for ultra-high torque main shafts is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a hydraulic locking device for ultra-high torque spindles, which solves the problem that traditional mechanical locking devices, such as keyed connections and splined connections, mentioned in the background art have significant shortcomings when dealing with ultra-high torque.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-torque spindle hydraulic locking device, comprising a spindle body, a locking mechanism mounted on the surface of the spindle body, a vertical plate fixedly connected to the end of the spindle body, a base fixedly connected to the bottom of the vertical plate, a water-cooling box fixedly connected to the surface of the base, a water-cooling mechanism connected through one side of the water-cooling box, the locking mechanism comprising two friction blocks mounted on the surface of the spindle body, a connecting half-ring fixedly connected to one side of the friction blocks, an extension block fixedly connected to the bottom of the connecting half-ring, and a double-headed hydraulic rod fixedly connected to the surface of the extension block; the water-cooling mechanism comprising a pump body connected through one side of the water-cooling box, a shunt pipe connected through the output end of the pump body, two flexible hoses connected through the top of the shunt pipe, the ends of the flexible hoses connected through the cavity inside the connecting half-ring, a return pipe connected through one side of the cavity, and a condenser pipe connected through the bottom of the return pipe.

[0006] As a further embodiment of this utility model, a positioning block is fixedly connected to the top of the connecting half-ring, and a positioning rod is slidably connected inside the positioning block. The positioning rod serves to fix the positioning block.

[0007] As a further embodiment of this utility model, each side of the positioning rod is fixedly connected to a support frame, which is fixedly connected to the surface of the base. The support frame serves to support the positioning rod.

[0008] As a further embodiment of this utility model, a transparent plate is installed on the surface of the water-cooled box, and scale lines are engraved on the surface of the transparent plate. The transparent plate serves to observe the capacity.

[0009] As a further embodiment of this utility model, the top of the water-cooled box is provided with a liquid injection port, and the bottom of the condenser tube is connected through to the inside of the water-cooled box. The liquid injection port serves to inject coolant.

[0010] As a further embodiment of this utility model, a liquid outlet is installed on one side of the water-cooled box, and a valve is installed on the surface of the liquid outlet. The valve controls the flow rate.

[0011] As a further embodiment of this utility model, the surface of the base is provided with four threaded holes, and the internal threads of the threaded holes are connected to threaded posts, which serve to fix the base.

[0012] This utility model provides a hydraulic locking device for ultra-high torque spindles, which has the following advantages:

[0013] 1. This ultra-high torque spindle hydraulic locking device, through the setting of the locking mechanism, when in use, places the spindle body in the middle of the two friction blocks, and then activates the bottom double-headed hydraulic rod. The double-headed hydraulic rod extends and retracts, causing the extension blocks on both sides to move relative to each other. This causes the friction block on one side of the semi-ring connected to the top of the extension block to move and clamp the spindle body in the middle inside. It can effectively resist the ultra-high torque borne by the spindle by the friction force generated between the friction block and the surface of the spindle body, and achieve reliable locking of the spindle.

[0014] 2. This ultra-high torque spindle hydraulic locking device, through the setting of a water-cooling mechanism, addresses the issue that the friction block is easily affected by temperature during use, which can cause deformation and affect its locking effect. Therefore, a cavity is set inside the connecting half-ring connected to one side of the friction block, and a circulating coolant is set inside the cavity. The heat on the surface of the friction block is carried away by the coolant through heat transfer, thereby effectively controlling the working temperature of the friction block. This ensures that the friction block can maintain stable physical properties and shape even when subjected to high-load friction for a long time, thus maintaining a good locking effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the locking mechanism of this utility model;

[0017] Figure 3 This is a schematic diagram of the water-cooling mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of the base structure of this utility model.

[0019] In the diagram: 1. Main spindle body; 2. Locking mechanism; 201. Friction block; 202. Connecting half ring; 203. Extension block; 204. Double-headed hydraulic rod; 3. Vertical plate; 4. Base; 5. Water-cooled box; 6. Water-cooling mechanism; 601. Diverter pipe; 602. Hose; 603. Return pipe; 604. Condenser pipe; 7. Positioning block; 8. Positioning rod; 9. Stand; 10. Transparent plate; 11. Injection port; 12. Outlet port; 13. Threaded column. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] Please see Figures 1 to 4This utility model provides a technical solution: a high-torque spindle hydraulic locking device, including a spindle body 1, with a locking mechanism 2 installed on the surface of the spindle body 1. Through the locking mechanism 2, the friction force generated between the friction block 201 and the surface of the spindle body 1 effectively resists the high torque borne by the spindle, achieving reliable locking of the spindle. A vertical plate 3 is fixedly connected to the end of the spindle body 1, and a base 4 is fixedly connected to the bottom of the vertical plate 3. A water-cooling box 5 is fixedly connected to the surface of the base 4, and a water-cooling mechanism 6 is connected through one side of the water-cooling box 5. The water-cooling mechanism 6 effectively controls the working temperature of the friction block 201, ensuring that the friction block 201 maintains stable physical properties and shape even under long-term high-load friction, thereby maintaining a good locking effect.

[0022] The locking mechanism 2 includes two friction blocks 201 mounted on the surface of the spindle body 1. A connecting half ring 202 is fixedly connected to one side of the friction block 201, an extension block 203 is fixedly connected to the bottom of the connecting half ring 202, and a double-headed hydraulic rod 204 is fixedly connected to the surface of the extension block 203.

[0023] The water cooling mechanism 6 includes a pump body that is connected to one side of the water cooling box 5. The output end of the pump body is connected to a distribution pipe 601. The top of the distribution pipe 601 is connected to two hoses 602. The ends of the hoses 602 are connected to the cavity inside the connecting half ring 202. A return pipe 603 is connected to one side of the cavity. A condenser pipe 604 is connected to the bottom of the return pipe 603.

[0024] A positioning block 7 is fixedly connected to the top of the connecting half ring 202, and a positioning rod 8 is slidably connected inside the positioning block 7. The positioning rod 8 serves to fix the positioning block 7.

[0025] Both sides of the positioning rod 8 are fixedly connected to the uprights 9, which are fixedly connected to the surface of the base 4. The uprights 9 serve to support the positioning rod 8.

[0026] A transparent plate 10 is installed on the surface of the water-cooled box 5. The surface of the transparent plate 10 is engraved with scale lines. The transparent plate 10 serves to observe the capacity.

[0027] The top of the water-cooled box 5 is provided with a liquid injection port 11, and the bottom of the condenser tube 604 is connected to the inside of the water-cooled box 5. The liquid injection port 11 serves to inject coolant.

[0028] A liquid outlet 12 is installed on one side of the water-cooled box 5. A valve is installed on the surface of the liquid outlet 12, which controls the flow rate.

[0029] The surface of the base 4 has four threaded holes, and the threaded holes are connected to threaded posts 13. The threaded posts 13 serve to fix the base 4.

[0030] In this invention, the working steps of the device are as follows:

[0031] First step: When using, place the main spindle body 1 in the middle of the two friction blocks 201, and then start the double-headed hydraulic rod 204 at the bottom. The double-headed hydraulic rod 204 extends and retracts, causing the extension blocks 203 on both sides to move relative to each other, thereby causing the friction block 201 on one side of the semi-ring 202 connected to the top of the extension block 203 to move and clamp the main spindle body 1 in the middle inside.

[0032] The second step: During use, the friction block 201 is easily affected by temperature, which can cause it to deform and affect its locking effect. Therefore, a cavity is set inside the connecting half ring 202 connected to one side of the friction block 201. The cavity is filled with circulating coolant, which uses heat transfer to remove the heat from the surface of the friction block 201.

[0033] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0034] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic locking device for an ultra-high torque spindle, comprising a spindle body (1), characterized in that: A locking mechanism (2) is installed on the surface of the main spindle body (1). A vertical plate (3) is fixedly connected to the end of the main spindle body (1). A base (4) is fixedly connected to the bottom of the vertical plate (3). A water-cooled box (5) is fixedly connected to the surface of the base (4). A water-cooling mechanism (6) is connected through one side of the water-cooled box (5). The locking mechanism (2) includes two friction blocks (201) installed on the surface of the spindle body (1). A connecting half ring (202) is fixedly connected to one side of the friction block (201), and an extension block (203) is fixedly connected to the bottom of the connecting half ring (202). A double-headed hydraulic rod (204) is fixedly connected to the surface of the extension block (203). The water cooling mechanism (6) includes a pump body that is connected to one side of the water cooling box (5). The output end of the pump body is connected to a split pipe (601). The top of the split pipe (601) is connected to two hoses (602). The ends of the hoses (602) are connected to the cavity inside the connecting half ring (202). A return pipe (603) is connected to one side of the cavity. A condenser pipe (604) is connected to the bottom of the return pipe (603).

2. The ultra-high torque spindle hydraulic locking device according to claim 1, characterized in that: The top of the connecting half-ring (202) is fixedly connected to a positioning block (7), and the inside of the positioning block (7) is slidably connected to a positioning rod (8).

3. The ultra-high torque spindle hydraulic locking device according to claim 2, characterized in that: Both sides of the positioning rod (8) are fixedly connected to the support frame (9), and the support frame (9) is fixedly connected to the surface of the base (4).

4. The ultra-high torque spindle hydraulic locking device according to claim 1, characterized in that: The surface of the water-cooled box (5) is fitted with a transparent plate (10), and the surface of the transparent plate (10) is engraved with scale lines.

5. The ultra-high torque spindle hydraulic locking device according to claim 1, characterized in that: The top of the water-cooled box (5) is provided with a liquid injection port (11), and the bottom of the condenser tube (604) is connected to the inside of the water-cooled box (5).

6. The ultra-high torque spindle hydraulic locking device according to claim 1, characterized in that: A liquid outlet (12) is installed on one side of the water-cooled box (5), and a valve is installed on the surface of the liquid outlet (12).

7. The ultra-high torque spindle hydraulic locking device according to claim 1, characterized in that: The base (4) has four threaded holes on its surface, and the threaded holes are connected to threaded posts (13).

Images