Improved flywheel structure

Abstract

The utility model relates to an improved flywheel structure, and belongs to the field of flywheels, the improved flywheel structure comprises a main wheel and an auxiliary wheel, the main wheel and the auxiliary wheel are coaxially arranged, the auxiliary wheel is located on the outer side of the main wheel, the auxiliary wheel comprises an upper auxiliary wheel and a lower auxiliary wheel, and the upper auxiliary wheel and the lower auxiliary wheel can clamp the main wheel to realize synchronous rotation of the auxiliary wheel and the main wheel. When the rotation inertia force of the auxiliary wheel is larger than the friction force between the auxiliary wheel and the main wheel, the main wheel and the auxiliary wheel rotate asynchronously; and the tensioning assembly is connected with the upper auxiliary wheel and the lower auxiliary wheel and used for tensioning the upper auxiliary wheel and the lower auxiliary wheel. The screw press has the effects that when the stud is suddenly stopped, the shear damage of the flywheel to the connecting structure is reduced, and the service life of the screw press is prolonged.

Description

Technical Field

[0001] The present application relates to the field of flywheels, and in particular to an improved flywheel structure. Background Art

[0002] A flywheel is a disk-shaped part with a large moment of inertia that acts as an energy storage device.

[0003] At present, the screw press mainly includes a frame, a motor, a flywheel, a stud, a slider and a brake device. The flywheel is the main component of the screw press. The motor drives the flywheel to rotate. The flywheel and the stud are fixedly connected through a connecting structure. The stud is rotatably connected to the frame. The stud and the slider are threaded, which converts the forward and reverse rotation of the flywheel into the up and down reciprocating motion of the slider, thereby realizing the continuous impact of the slider on the workpiece. When the screw press brakes, the brake device decelerates the flywheel to achieve stable braking of the screw press.

[0004] Regarding the above-mentioned related technologies, when the slider of the screw press stops moving unexpectedly, the stud will also stop suddenly. Since the flywheel stores a large amount of energy at this time, the flywheel will have an inertial force relative to the rotation of the stud. At this time, the flywheel will cause shear damage to the connecting structure, thereby reducing the service life of the screw press. Utility Model Content

[0005] In order to reduce the damage of the flywheel to the connection structure when the stud stops suddenly and increase the service life of the screw press, the present application provides an improved flywheel structure.

[0006] An improved flywheel structure provided in this application adopts the following technical solution:

[0007] An improved flywheel structure comprises a main wheel and an auxiliary wheel, wherein the main wheel and the auxiliary wheel are arranged coaxially; the auxiliary wheel is located outside the main wheel, and comprises an upper auxiliary wheel and a lower auxiliary wheel, wherein the upper auxiliary wheel and the lower auxiliary wheel can clamp the main wheel to realize synchronous rotation of the auxiliary wheel and the main wheel, and when the inertia force of the rotation of the auxiliary wheel is greater than the friction force between the auxiliary wheel and the main wheel, the main wheel and the auxiliary wheel rotate asynchronously; the upper auxiliary wheel and the lower auxiliary wheel are jointly provided with a tensioning assembly, and the tensioning assembly is used to tighten the upper auxiliary wheel and the lower auxiliary wheel.

[0008] By adopting the above technical solution, the upper auxiliary wheel and the lower auxiliary wheel clamp the main wheel so that the three can rotate synchronously. When the screw press works normally, the friction between the auxiliary wheel and the main wheel is greater than the rotational inertia force of the auxiliary wheel. Under the action of the motor, the three are accelerated to rotate synchronously. When the stud stops suddenly, the main wheel and the stud stop suddenly synchronously. The auxiliary wheel rotates relative to the main wheel under the action of rotational inertia, releasing a part of the rotational inertia of the flywheel, thereby reducing the shear stress between the main wheel and the stud, reducing the damage of the flywheel to the connection structure, and thus improving the service life of the screw press.

[0009] Optionally, a friction-resistant disc is provided at the connection position between the main wheel and the auxiliary wheel.

[0010] By adopting the above technical solution, under the action of the tensioning assembly, the upper auxiliary wheel, the lower auxiliary wheel and the main wheel are in close contact with each other. When the upper auxiliary wheel and the lower auxiliary wheel rotate relative to the main wheel, there is a large friction between the upper auxiliary wheel and the main wheel, and between the lower auxiliary wheel and the main wheel. Long-term or repeated friction will cause wear of the three, thereby reducing the stability of the structure. The provision of the wear-resistant disc can reduce the friction of the main wheel. When the wear-resistant disc is worn, the emergency stop structure can be made more stable by replacing the wear-resistant disc.

[0011] Optionally, the tensioning assembly includes a tensioning bolt, and the tensioning bolt passes through the upper auxiliary wheel and the lower auxiliary wheel at the same time;

[0012] A disc spring, wherein the disc spring is coaxially arranged with the tension bolt, and the tension bolt passes through the disc spring;

[0013] A locking nut is coaxially threadedly connected with the tension bolt, and is used to lock the upper auxiliary wheel, the lower auxiliary wheel and the disc spring on the tension bolt. The locking nut is provided with an anti-loosening structure, and the anti-loosening structure can prevent the locking nut from loosening.

[0014] By adopting the above technical solution, the tension stud fixes the upper auxiliary wheel and the lower auxiliary wheel on the upper and lower sides of the main wheel to achieve the fixation of the upper auxiliary wheel and the lower auxiliary wheel; the disc spring can provide an adjustable clamping force for the upper auxiliary wheel and the lower auxiliary wheel. When the disc spring is compressed, the disc spring squeezes the upper auxiliary wheel and the lower auxiliary wheel, increasing the clamping force between the upper auxiliary wheel and the lower auxiliary wheel, thereby increasing the friction between the auxiliary wheel and the main wheel, and then changing the trigger point for the auxiliary wheel and the main wheel to achieve asynchronous rotation. The disc spring is selected as the elastic part. Thanks to the characteristic of the disc spring with large stiffness, the disc spring can withstand large loads with small deformation, which is suitable for occasions with small axial space requirements, thereby reducing the length of the tension stud.

[0015] Optionally, the tensioning stud is coaxially sleeved with an elastic support ring at the position corresponding to the disc spring, and the disc spring is sleeved on the support ring.

[0016] By adopting the above technical solution, the support ring can prevent the wear of the side wall of the tension bolt during the expansion and contraction of the disc spring, thereby improving the strength of the tension bolt. The elasticity of the support ring ensures that there is enough deformation space when the disc spring is deformed. When the disc spring is squeezed and deformed, the inner diameter of the disc spring will squeeze the support ring, causing the support ring to deform, thereby ensuring the normal use of the disc spring.

[0017] Optionally, a support cover is provided on the coaxial line cover at one end of the disc spring away from the auxiliary wheel, the tensioning bolt passes through the support cover, and the anti-loosening structure abuts against a side of the support cover away from the disc spring.

[0018] By adopting the above technical solution, the support cover is arranged outside the disc spring, which can ensure the concentricity of the disc spring and the tensioning bolt during the expansion and contraction process, reduce the possibility of dislocation of the disc spring, and improve the stability and reliability of the emergency stop structure.

[0019] Optionally, the anti-loosening structure includes an anti-loosening nut threadedly connected coaxially with the tightening bolt, and the locking nut and the anti-loosening nut are in abutment with each other.

[0020] By adopting the above technical solution, the anti-loosening nut and the locking nut form a double nut anti-loosening structure, which can reduce the risk of the locking bolt loosening and increase the stability and safety of the screw press. This structure can also improve the connection strength of the locking bolt, prevent loosening and failure, and is simple, convenient and easy to install and operate.

[0021] Optionally, the anti-loosening structure includes a locking sleeve coaxially fixed to one end of the locking nut, and an annular groove is provided on the outer side of the locking sleeve around its own axis; the auxiliary wheel is provided with a blocking block, and the blocking block is clamped in the blocking groove to lock the locking nut.

[0022] By adopting the above technical solution, when the locking bolt is rotated into place, the locking block is locked in the slot to limit the reverse rotation of the locking sleeve, thereby ensuring the reverse rotation of the locking nut and reducing the possibility of the locking nut loosening.

[0023] Optionally, the clamping block is provided with a torsion spring, and the torsion spring applies a force to the clamping block to approach the locking sleeve.

[0024] By adopting the above technical solution, when the worker manually rotates the locking nut, the block rotates under the action of the locking sleeve, the torsion spring is deformed, the block is separated from the slot, and the torsion spring applies force to the block to approach the locking sleeve. When the block moves to the next slot, the block is automatically inserted into the slot under the action of the torsion spring.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. When the stud stops suddenly, the main wheel and the stud stop synchronously, and the auxiliary wheel rotates relative to the main wheel under the action of rotational inertia, releasing part of the rotational inertia of the flywheel, thereby reducing the shear stress between the main wheel and the stud, reducing the damage of the flywheel to the connection structure, and thus increasing the service life of the screw press;

[0027] 2. The disc spring can provide adjustable clamping force for the upper auxiliary wheel and the lower auxiliary wheel. When the disc spring is compressed, it squeezes the upper auxiliary wheel and the lower auxiliary wheel, increasing the clamping force between the upper auxiliary wheel and the lower auxiliary wheel, thereby increasing the friction between the auxiliary wheel and the main wheel, and then changing the trigger point for the auxiliary wheel and the main wheel to achieve asynchronous rotation;

[0028] 3. The support ring can prevent the wear of the side wall of the tension bolt during the expansion and contraction of the disc spring, thereby improving the strength of the tension bolt. The support cover is set outside the disc spring to ensure the concentricity of the disc spring and the tension bolt during the expansion and contraction process, reducing the possibility of misalignment of the disc spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural diagram of Example 1 of the present application.

[0030] Figure 2 It is a cross-sectional view of Example 1 of the present application.

[0031] Figure 3 yes Figure 2 Enlarged view of part A.

[0032] Figure 4 It is a structural diagram of Example 2 of the present application.

[0033] Figure 5 yes Figure 4 Enlarged view of part B.

[0034] Explanation of the reference numerals in the accompanying drawings: 1. main wheel; 11. protrusion; 2. auxiliary wheel; 21. upper auxiliary wheel; 22. lower auxiliary wheel; 3. friction-resistant plate; 4. tensioning assembly; 41. tensioning bolt; 42. disc spring; 43. support ring; 431. limiting portion; 432. supporting portion; 44. support cover; 45. locking nut; 46. gasket; 5. anti-loosening structure; 51. anti-loosening nut; 52. locking sleeve; 53. slot; 54. mounting table; 55. block; 56. torsion spring. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-5 This application is described in further detail.

[0036] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0038] The embodiment of the present application discloses an improved flywheel structure.

[0039] Example 1

[0040] Reference Figure 1 and Figure 2 An improved flywheel structure includes a main wheel 1 and an auxiliary wheel 2. The main wheel 1 is located inside the upper auxiliary wheel 21 and the lower auxiliary wheel 22 and is connected to the stud. The auxiliary wheel 2 includes an upper auxiliary wheel 21 and a lower auxiliary wheel 22. A protrusion 11 is fixedly connected to the main wheel 1 on the side away from the stud. The upper auxiliary wheel 21 is located above the protrusion 11, and the lower auxiliary wheel 22 is located below the protrusion 11. A gap is reserved between the opposite side walls of the upper auxiliary wheel 21 and the lower auxiliary wheel 22. The upper auxiliary wheel 21 and the lower auxiliary wheel 22 can clamp the protrusion 11 together to realize the synchronous rotation of the auxiliary wheel 2 and the main wheel 1. When the inertia force of the rotation of the auxiliary wheel 2 is greater than the friction between the auxiliary wheel 2 and the main wheel 1, the main wheel 1 and the auxiliary wheel 2 rotate asynchronously.

[0041] When the screw press is working normally, the friction force between the auxiliary wheel 2 and the main wheel 1 is greater than the inertia force of the auxiliary wheel 2. Under the action of the motor, the three are accelerated to rotate synchronously. When the stud stops suddenly, the main wheel 1 and the stud stop suddenly synchronously. The inertia force of the auxiliary wheel 2 is greater than the friction force between the auxiliary wheel 2 and the main wheel 1. The auxiliary wheel 2 rotates relative to the main wheel 1, releasing part of the rotational inertia of the flywheel, thereby reducing the shear stress between the main wheel 1 and the stud, reducing the damage of the flywheel to the connection structure, and thereby increasing the service life of the screw press.

[0042] Further, see Figure 2 The protrusion 11 is provided with a wear-resistant disc 3 at the contact position with the upper auxiliary wheel 21 and the lower auxiliary wheel 22. The wear-resistant disc can be made of wear-resistant steel plate, wear-resistant alloy or wear-resistant ceramic. The provision of the wear-resistant disc can reduce the friction between the main wheel 1 and the auxiliary wheel 2. When the wear-resistant disc is worn, the emergency stop structure can be made more stable by replacing the wear-resistant disc.

[0043] Reference Figure 2 and Figure 3 The upper auxiliary wheel 21 and the lower auxiliary wheel 22 are commonly connected with a plurality of tensioning assemblies 4, and the plurality of tensioning assemblies 4 are arranged in an array around the axis of the stud. The tensioning assemblies 4 include a disc spring 42 and a tensioning bolt 41. The disc spring 42 is coaxially arranged with the tensioning bolt 41. The tensioning bolt 41 passes through the lower auxiliary wheel 22, the upper auxiliary wheel 21 and the disc spring 42 from bottom to top in sequence. The tensioning bolt 41 also includes an anti-loosening structure 5, which can lock the upper auxiliary wheel 21, the lower auxiliary wheel 22 and the disc spring 42 located on the tensioning bolt 41.

[0044] Further, see Figure 3 Two elastic support rings 43 are arranged inside the disc spring 42. The two support rings 43 are coaxially passed through the tension stud, and the support ring 43 located at the bottom abuts against the surface of the auxiliary wheel 2. The support ring 43 includes a support portion 432 and a limiting portion 431 arranged coaxially. The limiting portion 431 is located at the end of the support portion 432, and the diameter of the limiting portion 431 is larger than the diameter of the support portion 432. The two support rings 43 are arranged opposite to each other. The two limiting portions 431 limit the disc spring 42 between the two to prevent the disc spring 42 from shifting up and down. The inner diameter of the disc spring 42 abuts against the outer diameter of the support portion 432. When the disc spring 42 is squeezed and deformed, the inner diameter of the disc spring 42 will squeeze the support portion 432, causing the support portion 432 to deform, thereby ensuring the normal use of the disc spring 42.

[0045] Further, see Figure 3A support cover 44 is provided on the top cover of the support ring 43 located above, and the tensioning bolt 41 passes through the support cover 44. The inner wall of the support cover 44 abuts against the outer diameter of the disc spring 42, and the top inner wall of the support cover 44 abuts against the limiting portion 431 of the support ring 43. The top of the support cover 44 is connected to the anti-loosening structure 5. The support cover 44 can ensure the concentricity of the disc spring 42 and the tensioning bolt 41 during the extension and retraction process, thereby reducing the possibility of dislocation of the disc spring 42.

[0046] Reference Figure 3 A locking nut 45 is arranged above the support cover 44, and the locking nut 45 is coaxially threadedly connected with the tension bolt 41. The locking nut 45 is used to lock the upper auxiliary wheel 21, the lower auxiliary wheel 22 and the disc spring 42 on the tension bolt 41. A gasket 46 is arranged between the locking nut 45 and the support cover 44, and the locking bolt passes through the gasket 46. The two sides of the gasket 46 are respectively in contact with the locking nut 45 and the support cover 44. An anti-loosening structure 5 is arranged on the side of the locking nut 45 away from the support cover 44, and the loosening structure can prevent the locking nut 45 from loosening.

[0047] Reference Figure 3 The anti-loosening structure 5 includes an anti-loosening nut 51 coaxially threadedly connected to the tightening bolt 41. The anti-loosening nut 51 is located above the locking nut 45. The anti-loosening nut 51 abuts against the locking nut 45 to form a double-nut anti-loosening structure 5. The anti-loosening nut 51 can prevent the locking nut 45 from loosening.

[0048] The implementation principle of an improved flywheel structure in the embodiment of the present application is as follows: when the screw press is working normally, the auxiliary wheel 2 is continuously accelerated by the motor, during which the friction between the auxiliary wheel 2 and the main wheel 1 is greater than the rotational inertia of the auxiliary wheel 2, and the auxiliary wheel 2 rotates synchronously with the main wheel 1; when the screw press brakes, the brake device decelerates the auxiliary wheel 2, and at this time, the auxiliary wheel 2 and the main wheel 1 decelerate synchronously to achieve the braking of the screw press. When the slider stops moving unexpectedly, the main wheel 1 and the stud stop synchronously, the rotational inertia of the auxiliary wheel 2 is greater than the friction, and the auxiliary wheel 2 rotates relative to the main wheel 1 under the action of rotational inertia, releasing a part of the rotational inertia of the flywheel, thereby reducing the shear stress between the main wheel 1 and the stud, reducing the damage of the flywheel to the connection structure, and thus increasing the service life of the screw press. The tensioning structure between the upper auxiliary wheel 21 and the lower auxiliary wheel 22 can enable the auxiliary wheel 2 to clamp the main wheel 1. Changing the tensioning force of the tensioning structure on the upper auxiliary wheel 21 and the lower auxiliary wheel 22 can change the friction between the auxiliary wheel 2 and the main wheel 1, thereby changing the trigger point for the auxiliary wheel 2 and the main wheel 1 to achieve asynchronous rotation.

[0049] Example 2

[0050] The difference from Example 1 is that, referring to Figure 4 and Figure 5The anti-loosening structure 5 includes a locking sleeve 52 fixedly connected to the end of the locking nut 45 away from the support cover 44 coaxially, and a plurality of slots 53 are provided on the outer side of the locking sleeve 52, and the plurality of slots 53 are distributed in an array around its own axis. The number of slots 53 affects the accuracy of the force locking nut 45, and the worker can determine the number of slots 53 according to actual needs. A mounting platform 54 is fixedly connected to the position of the auxiliary wheel 2 corresponding to the loosening structure, and an arc-shaped long strip block 55 is rotatably connected to the mounting platform 54. One end of the block 55 is rotatably connected to the mounting platform 54, and the other end is clamped in the slot 53 on one side of the locking sleeve 52. A torsion spring 56 is provided at the connection point between the block 55 and the mounting platform 54, and the torsion spring 56 gives the block 55 a force to approach the locking sleeve 52, and the block 55 is clamped in the slot 53 through the torsion spring 56 to lock the locking nut 45.

[0051] When the clamping force between the auxiliary wheel 2 and the main wheel 1 needs to be adjusted, the locking nut 45 is rotated, and the block 55 rotates to the side away from the locking sleeve 52 under the action of the groove wall of the groove 53, the torsion spring 56 is deformed, the block 55 is separated from the groove 53, and the torsion spring 56 applies force to the block 55 to approach the locking sleeve 52. When the block 55 moves to the next groove 53, the block 55 is automatically inserted into the groove 53 under the action of the torsion spring 56. When the locking nut 45 is rotated into place, the block 55 continues to abut against the groove wall of the groove 53 in the groove 53, so that the locking sleeve 52 cannot rotate in reverse, thereby preventing the locking nut 45 from loosening.

[0052] The embodiment of the present application has the effect of reducing the shear damage of the flywheel to the connection structure when the stud stops suddenly, thereby increasing the service life of the screw press.

[0053] 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. An improved flywheel structure, characterized in that: The invention comprises a main wheel (1) and an auxiliary wheel (2), wherein the main wheel (1) and the auxiliary wheel (2) are arranged coaxially; the auxiliary wheel (2) is located outside the main wheel (1) and comprises an upper auxiliary wheel (21) and a lower auxiliary wheel (22); the upper auxiliary wheel (21) and the lower auxiliary wheel (22) can clamp the main wheel (1) to achieve synchronous rotation of the auxiliary wheel (2) and the main wheel (1); when the inertia force of the rotation of the auxiliary wheel (2) is greater than the friction force between the auxiliary wheel (2) and the main wheel (1), the main wheel (1) and the auxiliary wheel (2) rotate asynchronously; the upper auxiliary wheel (21) and the lower auxiliary wheel (22) are jointly provided with a tensioning assembly (4), and the tensioning assembly (4) is used to tension the upper auxiliary wheel (21) and the lower auxiliary wheel (22).

2. An improved flywheel structure according to claim 1, characterized in that: The main wheel (1) is provided with a friction-resistant disk (3) at the connection position corresponding to the auxiliary wheel (2).

3. An improved flywheel structure according to claim 1, characterized in that: The tensioning assembly (4) comprises a tensioning bolt (41), and the tensioning bolt (41) is simultaneously passed through the upper auxiliary wheel (21) and the lower auxiliary wheel (22); a disc spring (42), wherein the disc spring (42) is coaxially arranged with the tension bolt (41), and the tension bolt (41) passes through the disc spring (42); A locking nut (45), wherein the locking nut (45) is coaxially threadedly connected to the tensioning bolt (41), and the locking nut (45) is used to lock the upper auxiliary wheel (21), the lower auxiliary wheel (22) and the disc spring (42) located on the tensioning bolt (41); the locking nut (45) is provided with an anti-loosening structure (5), and the anti-loosening structure (5) can prevent the locking nut (45) from loosening.

4. An improved flywheel structure according to claim 3, characterized in that: The tension bolt (41) is coaxially sleeved with an elastic support ring (43) at a position corresponding to the disc spring (42), and the disc spring (42) is sleeved on the support ring (43).

5. An improved flywheel structure according to claim 3, characterized in that: A support cover (44) is coaxially arranged at one end of the disc spring (42) away from the auxiliary wheel (2), the tension bolt (41) passes through the support cover (44), and the anti-loosening structure (5) abuts against a side of the support cover (44) away from the disc spring (42).

6. An improved flywheel structure according to claim 3, characterized in that: The anti-loosening structure (5) comprises an anti-loosening nut (51) threadedly connected coaxially with the tension bolt (41), and the locking nut (45) and the anti-loosening nut (51) are in abutment with each other.

7. An improved flywheel structure according to claim 3, characterized in that: The anti-loosening structure (5) comprises a locking sleeve (52) coaxially fixed to one end of the locking nut (45), and an annular clamping groove (53) is provided on the outer side of the locking sleeve (52) around its own axis; the auxiliary wheel (2) is provided with a clamping block (55), and the clamping block (55) is clamped in the clamping groove (53) to lock the locking nut (45).

8. An improved flywheel structure according to claim 7, characterized in that: The clamping block (55) is provided with a torsion spring (56), and the torsion spring (56) applies a force to the clamping block (55) to approach the locking sleeve (52).

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