Overturning tool for maintenance of hydraulic motor
By designing a tilting fixture for hydraulic motor maintenance and adopting a lifting and tilting drive system, the problems of frequent malfunctions and low maintenance safety of hydraulic motors on ships were solved, achieving safe and efficient construction and equipment maintenance, and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- AVIC WEIHAI SHIPYARD
- Filing Date
- 2025-05-08
- Publication Date
- 2026-05-08
AI Technical Summary
Hydraulic motors are prone to failure in marine applications and require multiple angles to be rotated during maintenance. Existing technologies pose safety hazards and high costs.
A tilting fixture for hydraulic motor maintenance has been designed, comprising a base, a lifting and tilting drive system. The hydraulic motor is fixed and tilted at multiple angles through structures such as lifting screws, guide rods, tilting plates and positioning holes. The control of the lifting motor and the tilting motor ensures safety and flexibility.
It enables safe and efficient maintenance of hydraulic motors, improves construction quality and efficiency, reduces costs, and can be used for performance testing of hydraulic systems and maintenance of other equipment.
Smart Images
Figure CN224209900U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of marine machinery and equipment maintenance technology, specifically a tilting tool for hydraulic motor maintenance that is simple in structure, has high safety performance, improves construction quality and efficiency, and saves costs. Background Technology
[0002] As is well known, hydraulic motors are widely used in ships, including hydraulic anchor winches, hatch cover opening devices, cargo winches, cable winches, and deck winches on ro-ro ships, greatly improving the maneuverability and work efficiency of ships. However, due to internal hydraulic oil contamination and improper operation, hydraulic motors experience a variety of malfunctions, including weak operation, unstable speed at low speeds, reduced speed, reduced output torque, oil leakage, and increased noise. In addition, because hydraulic motors are inherently high-precision, maintenance requires multi-angle rotation and adjustment, which necessitates the use of a crane and is prone to dangerous accidents. Summary of the Invention
[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a hydraulic motor maintenance tilting fixture that is simple in structure, has high safety performance, improves construction quality and efficiency, and saves costs.
[0004] The technical solution adopted by this utility model to solve its technical problem is:
[0005] A tilting fixture for hydraulic motor maintenance includes a base. The base has a left support and a right support on its left and right sides, respectively. A lifting screw and a guide rod are symmetrically mounted on the left and right supports, respectively. A lifting seat is fitted onto the lifting screw and guide rod. The lifting screw is connected to a lifting driver. One of the lifting seats has a tilting driver, the output end of which is connected to a tilting plate. The tilting plate has a circular positioning hole. A lateral opening communicating with the circular positioning hole is provided on the side of the tilting plate. A positioning hole, arc-shaped, is provided on the circumference of the circular positioning hole. A positioning bolt is installed in the positioning hole, passing through the positioning hole and a flange hole on the hydraulic motor, and then connecting to a positioning nut, thereby fixing the hydraulic motor to the tilting plate.
[0006] The flip plate described in this utility model is provided with a connecting strip. One end of the connecting strip is provided with a connecting hole, and the other end of the connecting strip is provided with a strip-shaped hole. One side of the connecting strip is secured to the flip plate by a positioning bolt passing through the connecting hole and the positioning hole, and then by a positioning nut. The other side of the connecting strip is secured to the hydraulic motor by a positioning bolt passing through the strip-shaped hole and the flange hole on the hydraulic motor, and then by a positioning nut. The connecting strip is used to connect the flip plate and the hydraulic motor, and hydraulic motors of different sizes can be connected to the flip plate.
[0007] The lifting drive described in this utility model includes a lifting motor, a first gearbox, a synchronous shaft, and a second gearbox. The output shaft of the lifting motor is connected to the input end of the first gearbox, the screw output end of the first gearbox is connected to the lifting screw, the coaxial output end of the first gearbox is connected to one end of the synchronous shaft, the other end of the synchronous shaft is connected to the coaxial input end of the second gearbox, and the screw output end of the second gearbox is connected to the lifting screw. The synchronous rotation of the two lifting screws is achieved through the two gearboxes and the synchronous shaft.
[0008] The flip drive of this utility model includes a fixed base, a flip motor, and a flip reduction gearbox. The fixed base is fixedly connected to the lifting base, the flip reduction gearbox is fixed on the fixed base, the input end of the flip reduction gearbox is connected to the output shaft of the flip motor, and the output end of the flip reduction gearbox is connected to the flip plate.
[0009] The flip plate of this utility model includes a horizontal plate and a vertical plate. The two sides of the horizontal plate are respectively vertically connected to the vertical plate. One of the vertical plates is connected to the output end of the flip gearbox, and the other vertical plate is rotatably connected to the lifting seat on the other side via a bearing. A circular positioning hole and a side opening are provided on the horizontal plate.
[0010] This utility model, due to the above-mentioned structure, has the advantages of simple structure, high safety performance, improved construction quality and efficiency, and cost saving. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of this utility model.
[0012] Figure 2 yes Figure 1 A schematic diagram of the structure of the lifting drive.
[0013] Figure 3 yes Figure 1 A schematic diagram of the structure of the inverting drive.
[0014] Figure 4 This is a structural diagram of the connecting strip.
[0015] Figure 5 This is a diagram showing the connection relationship between the connecting strip and the flip plate. Detailed Implementation
[0016] The present invention will be further described below with reference to the accompanying drawings:
[0017] As shown in the attached figure, a tilting fixture for hydraulic motor maintenance includes a base 1. The base 1 has a left support 2 and a right support 3 on its left and right sides, respectively. A lifting screw 4 and a guide rod 5 are symmetrically mounted on the left support 2 and right support 3, respectively. A lifting seat 6 is fitted onto the lifting screw 4 and guide rod 5. The lifting screw 4 is connected to a lifting driver. One of the lifting seats 6 has a tilting driver, the output end of which is connected to a tilting plate 7. The tilting plate 7 has a circular positioning hole 8. A lateral opening 9 communicating with the circular positioning hole 8 is located on the side of the tilting plate 7. A positioning hole 10 is located on the circumference of the circular positioning hole 8. The positioning hole 10 is arc-shaped, and a positioning bolt is installed inside the positioning hole 10. The positioning bolt passes through the positioning hole 10 and the flange hole on the hydraulic motor, and then connects to a positioning nut, thereby fixing the hydraulic motor onto the tilting plate 7.
[0018] Furthermore, the flip plate 7 is provided with a connecting strip 11. One end of the connecting strip 11 is provided with a connecting hole 12, and the other end of the connecting strip 11 is provided with a strip hole 13. One side of the connecting strip 11 is locked onto the flip plate 7 by a positioning bolt 23 passing through the connecting hole 12 and the positioning hole 10, and then by a positioning nut. The other side of the connecting strip 11 is locked onto the hydraulic motor by a positioning bolt passing through the strip hole 13 and the flange hole on the hydraulic motor, and then by a positioning nut. The connection between the flip plate 7 and the hydraulic motor is realized through the connecting strip 11, which can realize the connection of hydraulic motors of different sizes to the flip plate 7.
[0019] Furthermore, the lifting drive includes a lifting motor 14, a first gearbox 15, a synchronous shaft 16, and a second gearbox 17. The output shaft of the lifting motor 14 is connected to the input end of the first gearbox 15. The screw output end of the first gearbox 15 is connected to the lifting screw 4. The coaxial output end of the first gearbox 15 is connected to one end of the synchronous shaft 16. The other end of the synchronous shaft 16 is connected to the coaxial input end of the second gearbox 17. The screw output end of the second gearbox 17 is connected to the lifting screw 4. The synchronous rotation of the two lifting screws 4 is achieved through the two gearboxes and the synchronous shaft 16.
[0020] Furthermore, the flip drive includes a fixed base 18, a flip motor 19, and a flip reduction gearbox 20. The fixed base 18 is fixedly connected to the lifting base 6, the flip reduction gearbox 20 is fixed on the fixed base 18, the input end of the flip reduction gearbox 20 is connected to the output shaft of the flip motor 19, and the output end of the flip reduction gearbox 20 is connected to the flip plate 7.
[0021] Furthermore, the flip plate 7 includes a horizontal plate 21 and a vertical plate 22. The two sides of the horizontal plate 21 are respectively vertically connected to the vertical plate 22. One of the vertical plates 22 is connected to the output end of the flip gearbox, and the other vertical plate 22 is rotatably connected to the lifting seat 6 on the other side via a bearing. A circular positioning hole 8 and a side opening 9 are provided on the horizontal plate 21.
[0022] An oil collection box 24 is installed on the base 1. An oil outlet pipe 25 is connected to the side of the oil collection box 24. A control valve is installed on the oil outlet pipe 25. The bottom of the oil collection box 24 is designed to be inclined towards the direction of the oil outlet pipe 25. Waste oil is collected and centrally treated, which helps to reduce the environmental impact during maintenance. The first gearbox, the second gearbox, and the tilting reduction gearbox are all existing gearboxes that can achieve output. They are existing technologies. The accessories and connection relationships of the gear sets inside are also existing technologies and will not be described in detail here. At the same time, the lifting drive and the tilting device are equipped with lifting limit sensors and tilting limit sensors. The lifting limit sensors and tilting limit sensors are respectively connected to the controllers of the lifting motor that controls the lifting and the tilting motor that controls the tilting. Their specific connection relationships are the same as those of existing technologies and will not be described in detail here.
[0023] In use, the hydraulic motor requiring maintenance is removed from the hull. The output shaft of the hydraulic motor is then lifted using a crane, with the shaft facing downwards. The output shaft is then inserted through a side opening into a circular positioning hole 8. The hydraulic motor is a five-star or seven-star motor, with its side cylinder positioned above the tilting plate 7. Simultaneously, the flange hole of the hydraulic motor faces downwards. At the point where the flange hole of the hydraulic motor contacts the tilting plate 7, a positioning bolt is passed through the flange hole of the hydraulic motor and the positioning hole 10 on the tilting plate 7, and tightened with a positioning nut. At the point where the flange hole of the hydraulic motor does not contact the tilting plate 7, the positioning hole 10 on the tilting plate 7 is connected to the connecting strip 11. A positioning bolt passes through the connecting hole 12 of the connecting strip 11 and the positioning hole 10 of the tilting plate 7, and then... The nut is used for locking the connection. Another positioning bolt passes through the slot 13 of the connecting strip 11 and the flange hole of the hydraulic motor to connect with the positioning nut. This connects the flange hole on the hydraulic motor, which is not in contact with the tilting plate 7, to the tilting plate 7 via the connecting strip 11, further strengthening the connection between the hydraulic motor and the tilting plate 7. During maintenance and repair, the lifting motor 14 and the tilting motor 19 are controlled to lift and tilt the hydraulic motor via the tilting plate 7, enabling maintenance at different angles. This fixture can stably fix the hydraulic motor on the fixture and provides multi-angle tilting, facilitating maintenance by professionals and ensuring the accuracy requirements during repair. Regular maintenance and repair on the maintenance workbench allows for timely detection and handling of potential problems, extending the service life of the hydraulic motor. Besides hydraulic motor maintenance, this fixture can also be used in conjunction with a hydraulic pump for hydraulic system performance testing and debugging. It can also be used for maintenance of other equipment requiring multi-angle tilting. Due to the above structure, this invention has advantages such as simple structure, high safety performance, improved construction quality and efficiency, and cost savings.
Claims
1. A tilting fixture for hydraulic motor maintenance, comprising a base, characterized in that... The base has a left support and a right support on its left and right sides, respectively. A lifting screw and a guide rod are symmetrically installed on the left and right supports, respectively. A lifting seat is fitted on the lifting screw and the guide rod. The lifting screw is connected to the lifting driver. One of the lifting seats is equipped with a flip driver. The output end of the flip driver is connected to the flip plate. The flip plate is equipped with a circular positioning hole. The side of the flip plate of the circular positioning hole is equipped with a side opening that communicates with the circular positioning hole. The circumferential direction of the circular positioning hole is equipped with a positioning hole. The positioning hole is arc-shaped. A positioning bolt is installed in the positioning hole. The positioning bolt passes through the positioning hole and the flange hole on the hydraulic motor and is connected to the positioning nut, thereby fixing the hydraulic motor to the flip plate.
2. The tilting fixture for hydraulic motor maintenance according to claim 1, characterized in that... The flip plate is provided with a connecting strip. One end of the connecting strip is provided with a connecting hole, and the other end of the connecting strip is provided with a strip-shaped hole. One side of the connecting strip is secured to the flip plate by a positioning bolt passing through the connecting hole and the positioning hole, and then by a positioning nut. The other side of the connecting strip is secured to the hydraulic motor by a positioning bolt passing through the strip-shaped hole and the flange hole on the hydraulic motor, and then by a positioning nut. The connecting strip enables the flip plate to be connected to the hydraulic motor, and hydraulic motors of different sizes can be connected to the flip plate.
3. The tilting fixture for hydraulic motor maintenance according to claim 1, characterized in that... The lifting drive includes a lifting motor, a first gearbox, a synchronous shaft, and a second gearbox. The output shaft of the lifting motor is connected to the input end of the first gearbox. The screw output end of the first gearbox is connected to the lifting screw. The coaxial output end of the first gearbox is connected to one end of the synchronous shaft. The other end of the synchronous shaft is connected to the coaxial input end of the second gearbox. The screw output end of the second gearbox is connected to the lifting screw. The synchronous rotation of the two lifting screws is achieved through the two gearboxes and the synchronous shaft.
4. The tilting fixture for hydraulic motor maintenance according to claim 1, characterized in that... The flip drive includes a fixed base, a flip motor, and a flip reduction gearbox. The fixed base is fixedly connected to the lifting base. The flip reduction gearbox is fixed on the fixed base. The input end of the flip reduction gearbox is connected to the output shaft of the flip motor, and the output end of the flip reduction gearbox is connected to the flip plate.
5. A tilting fixture for hydraulic motor maintenance according to claim 1, characterized in that... The flip plate includes a horizontal plate and a vertical plate. The two sides of the horizontal plate are vertically connected to the vertical plate. One of the vertical plates is connected to the output end of the flip gearbox, and the other vertical plate is rotatably connected to the lifting seat on the other side via a bearing. A circular positioning hole and a side opening are provided on the horizontal plate.