Large-torque ratchet mechanism
Through the use of titanium alloy materials and design-optimized structures, the existing ratchet mechanisms are solved inadequate stability and service life under large torque and impact, achieving higher stability and service life, and are suitable for marine mechanical applications.
Patent Information
- Application Number
- CN202421292365.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-06-06
AI Technical Summary
The existing ratchet mechanism has poor stability and service life when facing large torque and impact, and is prone to damage.
The outer ratchet, pawl and inner ratchet are made of titanium alloy material, and the outer ratchet is designed to include an inner ring and an outer ring, and the inner ring and a detent are meshed, and a torsion spring and deep groove ball bearing are provided to enhance the mechanism's ability to withstand large torque.
It improves the stability and service life of the ratchet mechanism, can withstand 5000Nm of torque, and is suitable for marine machinery application scenarios.
Smart Images
Figure CN222772549U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of ratchet mechanisms, and in particular to a high-torque ratchet mechanism. Background Art
[0002] The ratchet mechanism is a unidirectional intermittent motion mechanism composed of a ratchet and a pawl.
[0003] At present, ratchet mechanisms are widely used in the field of marine machinery, especially in the process of collecting wave kinetic energy, the ratchet mechanism is an indispensable part, but the kinetic energy of waves is large, the instantaneous impact is large, and the environment is relatively complex.
[0004] The inventors have found that the ratchet mechanism in the prior art has at least the following problems: the traditional ratchet mechanism has poor ability to withstand large torques and poor stability and reliability, and is easily damaged when encountering a large impact, resulting in a reduction in the service life of the ratchet mechanism. Utility Model Content
[0005] In order to increase the service life of the ratchet mechanism, the present application provides a high-torque ratchet mechanism.
[0006] The high torque ratchet mechanism provided in this application adopts the following technical solution:
[0007] A large torque ratchet mechanism comprises an inner ratchet, an outer ratchet, a torsion spring, a pawl, a deep groove ball bearing and a torsion spring bolt; the outer ratchet, the pawl and the inner ratchet are all made of titanium alloy; the outer ratchet comprises an inner gear ring and an outer gear ring, the inner gear ring is meshed with the pawl, an outer ratchet tooth retaining ring is arranged at the outer ratchet, both end surfaces of the outer ratchet are connected to the outer ratchet tooth retaining ring, both sides of the inner ring cooperate with the outer ring of the deep groove ball bearing and remain parallel to the end surfaces on both sides, the inner ring of the deep groove ball bearing cooperates with one side of the outer ring of the inner ratchet and remains parallel to the end surfaces on the same side, one end surface of the inner ratchet is connected to the inner ratchet retaining ring, the rear circular wall of the pawl contacts the circular wall of the groove of the outer ring of the inner ratchet, the inner wall of the pawl contacts one end of the torsion spring, the other end of the torsion spring contacts another groove of the outer ring of the inner ratchet, and the inner ring of the inner ratchet is provided with a shaft to be installed connected to the inner ring of the inner ratchet.
[0008] By adopting the above technical scheme, titanium alloy materials are selected for the materials of the outer ratchet, pawl and inner ratchet. Titanium alloy materials are used in the outer ratchet, pawl and inner ratchet structures, so that the outer ratchet, pawl and inner ratchet structures have the advantages of high strength, low density, excellent heat corrosion resistance and corrosion resistance, which helps them to withstand large torque when rotating. The designed torque can reach 5000Nm, which improves stability and service life. The outer ratchet includes an inner gear ring and an outer gear ring, and the inner gear ring is meshed with the pawl. The movement of the outer ratchet can drive the movement of the inner gear ring and the outer gear ring. During the movement of the inner gear ring, the pawl meshed with the inner gear ring is driven to move, thereby driving the pawl to move, which facilitates the movement process of the ratchet mechanism. During the operation of the ratchet mechanism, each component operates together, which facilitates the movement process of the ratchet mechanism.
[0009] Optionally, a plurality of torsion springs are provided, and the number of pawls corresponds to the number of torsion springs.
[0010] By adopting the above technical solution, several torsion springs are provided, and the number of pawls and torsion springs corresponds to each other, which improves the problem that a single pawl cannot provide sufficient force. Several pawls and torsion springs are provided so that they can work together, facilitating the working process of the ratchet mechanism.
[0011] Optionally, the torsion spring and the pawl are arranged to rotate along the circumferential direction of the inner ratchet, the torsion spring bolt is arranged in the groove of the outer ring of the inner ratchet, the pawl is installed on the circular wall of the groove of the outer ring of the inner ratchet, and the pawl is meshed with the inner gear ring of the outer ratchet.
[0012] By adopting the above technical solution, the pawl is installed on the circular wall of the groove of the outer ring of the inner ratchet, and the pawl is meshed with the inner gear ring of the outer ratchet. When the inner ratchet rotates clockwise, the pawl is meshed with the inner gear ring of the outer ratchet and drives the outer ratchet to rotate clockwise, and the kinetic energy is transmitted to the part to be connected which is connected to the outer gear ring of the outer ratchet. When the shaft to be installed which is connected to the inner ring of the inner ratchet drives the inner ratchet to rotate counterclockwise, the pawl is subjected to the radial pressure of the inner gear ring of the outer ratchet and squeezes the torsion spring to deform it. The torsion spring slides to the next tooth of the inner gear ring of the outer ratchet, and this process is repeated to achieve no-load rotation.
[0013] Optionally, the pawl abuts against the torsion spring and puts the torsion spring in a compressed state.
[0014] By adopting the above technical solution, since the pawl abuts against the torsion spring and puts the torsion spring in a compressed state, during the movement of the pawl, the torsion spring always provides power for the pawl, which facilitates the working process of the pawl.
[0015] Optionally, the rotation angle of the pawl is 0-55°.
[0016] By adopting the above technical solution, the rotation angle of the pawl is 0-55°. Within this rotation range, the pawl can always cooperate with the inner ratchet and the outer ratchet, reducing the problem of the pawl being unable to cooperate with the inner ratchet and the outer ratchet due to the excessive rotation angle of the pawl.
[0017] Optionally, the rotation angle of the torsion spring around the torsion spring bolt is 0-15°, and the initial angle of the torsion spring is 45°.
[0018] By adopting the above technical solution, the rotation angle of the torsion spring around the torsion spring bolt is 0-15°, and the initial angle of the torsion spring is 45°, so that the pawl is always provided with power. At the same time, the rotation angle of the torsion spring around the torsion spring bolt is 0-15°. During the process of the torsion spring rotating around the torsion spring bolt, the pawl can still be provided with power, which facilitates the working process of the pawl.
[0019] Optionally, the engagement angle between the pawl and the outer ratchet is 18°.
[0020] By adopting the above technical solution, the meshing angle between the pawl and the outer ratchet is 18°, which ensures the stability of the meshing between the pawl and the outer ratchet.
[0021] Optionally, the shaft to be installed connected to the inner ring of the inner ratchet is connected to two sets of ratchet mechanisms at the same time, and the two sets of ratchet mechanisms are installed in opposite directions.
[0022] By adopting the above technical solution, no matter in which direction the shaft to be installed rotates, it can drive one set of ratchet mechanisms to rotate to achieve transmission, thereby realizing the collection and transmission of kinetic energy rotating in different directions.
[0023] In summary, the present application includes at least one of the following beneficial technical effects:
[0024] 1. The ratchet, pawl and inner ratchet are all made of titanium alloy. The titanium alloy is used in the outer ratchet, pawl and inner ratchet structure, which makes the outer ratchet, pawl and inner ratchet structure have the advantages of high strength, low density, excellent heat corrosion resistance and corrosion resistance, etc., which helps it to withstand large torque when rotating. The designed torque can reach 5000Nm, which improves stability and service life;
[0025] 2. The outer ratchet includes an inner gear ring and an outer gear ring, and the inner gear ring is meshed with the pawl. The movement of the outer ratchet can drive the inner gear ring and the outer gear ring to move. During the movement of the inner gear ring, the pawl meshed with the inner gear ring is driven to move, thereby driving the pawl to move, which facilitates the movement process of the ratchet mechanism;
[0026] 3. This ratchet mechanism can be well applied in marine machinery applications, can withstand large torque, is corrosion-resistant and has high stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1It is an exploded view of the main structure of the embodiment of the present application.
[0028] Figure 2 It is a cross-sectional view of the main structure of the embodiment of the present application.
[0029] Figure 3 It is a schematic diagram of the structure of the ratchet.
[0030] Description of reference numerals:
[0031] 1. External ratchet tooth retaining ring; 2. Internal ratchet retaining ring; 3. Torsion spring; 4. Deep groove ball bearing; 5. Ratchet pawl; 6. Internal ratchet; 7. External ratchet; 8. Torsion spring bolt. DETAILED DESCRIPTION
[0032] The following is combined with Figure 1-3 This application is described in further detail.
[0033] The present application embodiment discloses a high torque ratchet mechanism. Figure 1 , Figure 2 and Figure 3 The large torque ratchet mechanism includes an outer ratchet 7 tooth retaining ring 1, an inner ratchet retaining ring 2, a torsion spring 3, a deep groove ball bearing 4, a pawl 5, an inner ratchet 6, an outer ratchet 7, and a torsion spring 3 bolt;
[0034] The outer ratchet 7 includes an inner gear ring and an outer gear ring, the outer gear ring is connected to the connecting piece to be connected so that the ratchet mechanism is connected to the external component, the inner gear ring is meshed with the pawl 5, the two end faces of the outer ratchet 7 are connected to the outer ratchet 7 tooth retaining ring 1, the smooth parts without teeth on both sides of the inner ring are matched with the outer ring of the deep groove ball bearing 4, and are kept parallel to the end faces on both sides, the inner ring of the deep groove ball bearing 4 is matched with one side of the outer ring of the inner ratchet 6, and the end faces on the same side are kept parallel, one end face of the inner ratchet 6 is connected to the inner ratchet retaining ring 2, and the ratchet The rear circular wall of the pawl 5 contacts the circular wall of the groove on the outer ring of the inner ratchet 6, the inner wall of the pawl 5 contacts one end of the torsion spring 3, the other end of the torsion spring 3 contacts another groove on the outer ring of the inner ratchet 6, and the inner ring of the inner ratchet 6 is connected to the shaft to be installed; such an arrangement facilitates the operation of the ratchet mechanism, and at the same time, the materials of the outer ratchet 7, the pawl 5, and the inner ratchet 6 are made of titanium alloy. Due to the characteristics of the titanium alloy material, the ratchet mechanism can withstand large torque during rotation, and the designed torque can reach 5000Nm.
[0035] Reference Figure 1 , Figure 2 and Figure 3, several torsion springs 3 are arranged, and the number of pawls 5 corresponds to the number of torsion springs 3, and the positions of several pawls 5 and several torsion springs 3 correspond one by one; in this embodiment, at least four outer grooves of the inner ratchet 6 are included, and correspond one by one to at least four torsion springs 3 and at least four pawls 5, at least four torsion springs 3 and at least four pawls 5 are arranged to rotate evenly along the circumferential direction of the inner ratchet 6, at least four torsion springs 3 bolts are arranged in the outer groove of the inner ratchet 6, the pawls 5 are installed on the circular wall at the outer groove of the inner ratchet 6, the torsion springs 3 are installed in the outer groove of the inner ratchet 6 through the torsion spring 3 bolts, at least four pawls 5 are meshed with the inner gear ring of the outer ratchet 7, so that the pawls 5 squeeze the torsion springs 3, and the torsion springs 3 are in a compressed state; the torsion springs 3 in the compressed state can provide sufficient power to facilitate the working process; in addition, the outer ratchet 7, the pawls 5, and the inner ratchet 6 have a larger thickness relative to their diameters, and their structural characteristics help them to withstand large torque when rotating.
[0036] Reference Figure 1 , Figure 2 and Figure 3 The rotation angle of the pawl 5 of the ratchet mechanism is 0-55°, and the rotation angle of the torsion spring 3 around the torsion spring 3 bolt is 0-15°, wherein the initial angle of the torsion spring 3 is 45°, and the meshing angle of the pawl 5 and the outer ratchet 7 is 18°; such a configuration facilitates the working process of the ratchet mechanism and reduces the possibility that the pawl 5 cannot rotate. During the working process, when the shaft to be installed connected to the inner ring of the inner ratchet 6 drives the inner ratchet 6 to rotate clockwise, the pawl 5 meshes with the inner gear ring of the outer ratchet 7 and drives the outer ratchet 7 to rotate clockwise, transmitting kinetic energy to the to-be-connected part connected to the outer gear ring of the outer ratchet 7, and when the shaft to be installed connected to the inner ring of the inner ratchet 6 drives the inner ratchet 6 to rotate counterclockwise, the pawl 5 is subjected to the radial pressure of the inner gear ring of the outer ratchet 7, and squeezes the torsion spring 3 to shape it. The torsion spring 3 changes, and slides to the next tooth of the inner gear ring of the outer ratchet 7, and this process is repeated to achieve no-load rotation; at the same time, the shaft to be installed connected to the inner ring of the inner ratchet 6 is connected to two sets of ratchet mechanisms at the same time, and the two sets of ratchet mechanisms are installed in opposite directions. No matter in which direction the shaft to be installed rotates, it can drive one of the ratchet mechanisms to rotate to achieve transmission, thereby realizing the collection and transmission of kinetic energy rotating in different directions; in addition, the part to be connected connected to the outer gear ring of the outer ratchet 7 is a bevel gear, and another bevel gear is meshed with the bevel gears to be connected connected to the outer gear rings of the outer ratchet wheels 7 of the two sets of ratchet mechanisms at the same time. No matter in which direction the shaft to be installed rotates, it can drive the other bevel gear of the bevel gear meshing with the two ratchet mechanisms to rotate in the same direction, thereby achieving unidirectional output.
[0037] The implementation principle of a high-torque ratchet mechanism in an embodiment of the present application is as follows: when the shaft to be installed connected to the inner ring of the inner ratchet 6 drives the inner ratchet 6 to rotate clockwise, the pawl 5 meshes with the inner gear ring of the outer ratchet 7 and drives the outer ratchet 7 to rotate clockwise, transferring kinetic energy to the part to be connected connected to the outer gear ring of the outer ratchet 7; when the shaft to be installed connected to the inner ring of the inner ratchet 6 drives the inner ratchet 6 to rotate counterclockwise, the pawl 5 is subjected to radial pressure from the inner gear ring of the outer ratchet 7 and squeezes the torsion spring 3 to deform it, and the torsion spring 3 slides to the next tooth of the inner gear ring of the outer ratchet 7, and this process is repeated to achieve no-load rotation.
[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A high torque ratchet mechanism, characterized in that: The invention comprises an inner ratchet (6), an outer ratchet (7), a torsion spring (3), a pawl (5), a deep groove ball bearing (4) and a torsion spring bolt (8); the outer ratchet (7), the pawl (5) and the inner ratchet (6) are all made of titanium alloy; the outer ratchet (7) comprises an inner gear ring and an outer gear ring, the inner gear ring meshes with the pawl (5); an outer ratchet tooth retaining ring (1) is arranged at the outer ratchet (7); the two end surfaces of the outer ratchet (7) are connected to the outer ratchet tooth retaining ring (1); the two sides of the inner ring cooperate with the outer ring of the deep groove ball bearing (4); The inner ring of the deep groove ball bearing (4) is matched with one side of the outer ring of the inner ratchet (6) and the end faces on the same side are kept parallel. The end face of one side of the inner ratchet (6) is connected to the inner ratchet retaining ring (2). The rear circular wall of the pawl (5) contacts the circular wall of the groove of the outer ring of the inner ratchet (6). The inner wall of the pawl (5) contacts one end of the torsion spring (3). The other end of the torsion spring (3) contacts another groove of the outer ring of the inner ratchet (6). The inner ring of the inner ratchet (6) is provided with a shaft to be installed that is connected to the inner ring of the inner ratchet (6).
2. The high torque ratchet mechanism according to claim 1, characterized in that: A plurality of torsion springs (3) are provided, and the number of the ratchets (5) corresponds to the number of the torsion springs (3).
3. The high torque ratchet mechanism according to claim 2, characterized in that: The torsion spring (3) and the pawl (5) are arranged to rotate along the circumferential direction of the inner ratchet (6); the bolt of the torsion spring (3) is arranged in the outer ring groove of the inner ratchet (6); the pawl (5) is installed on the circular wall of the outer ring groove of the inner ratchet (6); and the pawl (5) is meshed with the inner gear ring of the outer ratchet (7).
4. The high torque ratchet mechanism according to claim 3, characterized in that: The ratchet pawl (5) abuts against the torsion spring (3) and puts the torsion spring (3) in a compressed state.
5. The high torque ratchet mechanism according to claim 1, characterized in that: The rotation angle of the ratchet pawl (5) is 0-55°.
6. The high torque ratchet mechanism according to claim 1, characterized in that: The rotation angle of the torsion spring (3) around the torsion spring (3) bolt is 0-15°, and the initial angle of the torsion spring (3) is 45°.
7. The high torque ratchet mechanism according to claim 1, characterized in that: The meshing angle between the pawl (5) and the outer ratchet (7) is 18°.
8. The high torque ratchet mechanism according to claim 1, characterized in that: The shaft to be installed, which is connected to the inner ring of the inner ratchet (6), is simultaneously connected to two sets of ratchet mechanisms, and the two sets of ratchet mechanisms are installed in opposite directions.