CN109163057B

CN109163057B - Flywheel brake

Info

Publication number: CN109163057B
Application number: CN201811295558.1A
Authority: CN
Inventors: 刘俊
Original assignee: JIAXING MINDE AUTO PARTS CO Ltd
Current assignee: JIAXING MINDE AUTO PARTS CO Ltd
Priority date: 2018-11-01
Filing date: 2018-11-01
Publication date: 2020-07-24
Anticipated expiration: 2038-11-01
Also published as: CN109163057A

Abstract

The invention relates to a flywheel brake, which comprises a flywheel shaft connected to a press machine and a flywheel fixed on the flywheel shaft, and is characterized in that: a mounting hole is formed in the center of the flywheel shaft, a sliding rod is arranged in the mounting in a sliding mode, a tension spring is arranged between the sliding rod and the flywheel shaft and used for forcing the sliding rod to slide backwards, and a permanent magnet disc is fixedly arranged at the front end of the sliding rod; the flywheel brake also comprises a support frame, a first rotating shaft, an electromagnet disc, a second rotating shaft and a speed reduction component; the speed reducing component comprises a shell, a following turntable, a coil spring and a friction plate. The brake system has the advantages of capability of automatically adjusting the braking efficiency according to the parameter change of equipment, small damage to the flywheel and long service life.

Description

Flywheel brake

Technical Field

The invention relates to the field of press machine equipment, in particular to a flywheel brake for a press machine.

Background

The safety problem of the equipment is more and more attentive to the countries and factories, especially for large punching machines (pressing machines), when the machine is stopped, most flywheels still run, if the machine is not stopped, the damage of maintenance and operation workers can be easily caused, and the safe and reliable flywheel brake can be a reasonable choice.

The braking modes of a flywheel of the press machine generally comprise axial braking and radial braking, but no matter which braking mode is adopted, a traditional brake generally brakes by contacting a friction plate with the flywheel, and in the long-term use process, the friction plate is continuously worn, the braking performance of the friction plate is increasingly poor, and potential safety hazards exist.

Therefore, it is an urgent problem to be solved by those skilled in the art to improve the conventional flywheel brake to overcome the above problems.

Disclosure of Invention

The invention mainly aims to provide a flywheel brake which can automatically adjust the braking efficiency according to the parameter change of equipment, has small damage to a flywheel and has long service life.

In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: the utility model provides a flywheel brake, is including connecting the flywheel axle on the press, and be fixed in flywheel epaxial flywheel, its characterized in that: a mounting hole is formed in the center of the flywheel shaft, a sliding rod is arranged in the mounting hole in a sliding manner, a tension spring is arranged between the sliding rod and the flywheel shaft and used for forcing the sliding rod to slide backwards, and a permanent magnet disc is fixedly arranged at the front end of the sliding rod;

the flywheel brake further comprises a support frame, a first rotating shaft, an electromagnet disc, a second rotating shaft and a speed reduction component, the support frame is fixedly arranged on the press machine, the first rotating shaft is rotatably arranged on the support frame, the first rotating shaft and the flywheel shaft are concentrically arranged, the rear end of the first rotating shaft is fixedly arranged on the electromagnet disc, the electromagnet disc can attract the permanent magnet disc after being electrified, so that the permanent magnet disc is abutted against the electromagnet disc, and the flywheel shaft drives the first rotating shaft to rotate by means of friction force between the permanent magnet disc and the electromagnet disc; the second rotating shaft is rotatably arranged on the supporting frame, and the first rotating shaft can drive the second rotating shaft to rotate;

the speed reducing component comprises a shell, a following rotary disc, a coil spring and a friction plate, wherein the shell is of a closed structure, cooling water is filled in the shell, a water inlet and a water outlet are formed in the shell, the water inlet and the water outlet are connected with a water tank through a water pipe, a second rotating shaft penetrates through the shell, the following rotary disc is concentrically fixed on the second rotating shaft, the coil spring is arranged on the following rotary disc and synchronously rotates along with the following rotary disc, the spiral direction of the coil spring is the same as the rotating direction of the coil spring, and the friction plate is fixedly arranged on one circle of the outer side of the coil spring; the coil spring is driven by the turntable to rotate, the coil spring deforms outwards under the action of centrifugal force, so that the friction plate is tightly attached to the inner wall of the shell and rubs to achieve speed reduction, cooling water in the shell is discharged from the water outlet under the rotating action of the coil spring and enters from the water inlet through the water tank through the water pipe, and the cooling water circulates in the shell and the water tank to take away heat generated by friction, so that the cooling effect is achieved.

As an improvement, the central position of the coil spring is provided with a circle of limiting clamping grooves, a limiting column is fixedly arranged along with the central position of the rotary table, the top end of the limiting column is hinged with an adjusting card, and the adjusting card can enter different limiting clamping grooves to adjust the opening degree of the coil spring. The power required by different presses is different, that is, the accident speed when the flywheel needs to brake is different, so that the flywheel with high rotating speed needs more efficient braking effect. The limiting clamping groove is formed in the coil spring, the limiting column is arranged on the rotary disc, and the friction force of the friction plate on the wall of the shell can be adjusted by adjusting the tensile force of the coil spring, so that the braking efficiency is adjusted.

Preferably, a large gear is concentrically and fixedly arranged on the first rotating shaft, a small gear is concentrically and fixedly arranged on the second rotating shaft, the large gear is meshed with the small gear, and the first rotating shaft drives the second rotating shaft to rotate through the matching of the large gear and the small gear. The big gear is transmitted to the small gear, so the rotation speed is increased, and the braking efficiency can be improved.

As an improvement, the permanent magnet disc end face is provided with a first rubber sheet, the electromagnet disc end face is provided with a second rubber sheet, and the first rubber sheet and the second rubber sheet can be mutually abutted. On the one hand, the rubber sheet has high friction force and is suitable for power transmission, and on the other hand, the rubber sheet also aims to protect the damage which can be generated by collision when the rubber sheet is attracted.

Preferably, the housing comprises a rear shell and a cover plate, and the rear shell and the cover plate are hermetically fixed through a bolt assembly. The structure is simple and reliable, and the cover plate is conveniently detached to adjust the opening degree of the coil spring.

Compared with the prior art, the invention has the following advantages: the cost of the flywheel is higher than the cost of some small parts, and the scheme achieves the purpose of protecting the flywheel by transmitting the rotation of the flywheel to other parts and braking the other parts by friction. The electromagnet is slowly pressurized to increase the attraction force on the magnet so as to complete the connection of the flywheel rotating shaft and transmit the kinetic energy of the flywheel to the speed reduction part. The cooperation setting of speed reduction part original wind spring and friction disc, it is fast more rotating, the centrifugal force that the wind spring received is also big more, the wind spring is also big more to the pressure of casing, frictional force computational formula more, the big more frictional force of pressure is also big more, braking force is also big more, there is a dynamic balance all the time, consequently this scheme can be according to the automatic braking efficiency regulation that carries out of the parameter variation of equipment to satisfy the braking requirement of different rotation flywheels. The closed structure of the shell is arranged, and the cooling water is introduced, so that the cooling water can circulate between the water tank and the shell by utilizing the vortex generated by the rotation of the coil spring, and the heat dissipation effect is realized.

Drawings

FIG. 1 is a schematic perspective view of a preferred embodiment of the present invention (and showing the mounting location on the press);

FIG. 2 is a half sectional view of a preferred embodiment according to the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 2, in accordance with a preferred embodiment of the present invention;

FIG. 4 is an exploded view of a preferred embodiment according to the present invention;

fig. 5 is a schematic view showing the internal structure of the cover plate according to a preferred embodiment of the present invention after being removed.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated without limiting the specific scope of protection of the present invention.

As shown in fig. 1 to 5, a preferred embodiment of the present invention includes a flywheel shaft 101 connected to a press 100, and a flywheel 102 fixed on the flywheel shaft 101, and is characterized in that:

the center of the flywheel shaft 101 is provided with a mounting hole (filling position for the sliding rod, so no reference number is provided), a sliding rod 1 is arranged in the mounting hole in a sliding manner, a tension spring 2 is arranged between the sliding rod 1 and the flywheel shaft 101, the tension spring 2 forces the sliding rod 1 to slide backwards, and a permanent magnet disc 3 is fixedly arranged at the front end of the sliding rod 1.

The flywheel brake further comprises a support frame 4, a first rotating shaft 5, an electromagnet disc 6, a second rotating shaft 7 and a speed reduction component 8, the support frame 4 is fixedly arranged on the press machine 100, the first rotating shaft 5 is rotatably arranged on the support frame 4, the first rotating shaft 5 and the flywheel shaft 101 are concentrically arranged, the rear end of the first rotating shaft 5 is fixedly arranged on the electromagnet disc 6, the electromagnet disc 6 can attract the permanent magnet disc 3 after being electrified, so that the permanent magnet disc 3 abuts against the electromagnet disc 6, and the flywheel 101 drives the first rotating shaft 5 to rotate by means of friction force between the permanent magnet disc 3 and the electromagnet disc 6; the second rotating shaft 7 is rotatably disposed on the supporting frame 4, and the first rotating shaft 5 can drive the second rotating shaft 7 to rotate.

The speed reducing component 8 comprises a shell 81, a following rotary disc 82, a coil spring 83 and a friction plate 84, wherein the shell 81 is of a closed structure, the shell 81 is filled with cooling water, a water inlet 81a and a water outlet 81b are formed in the shell 81, the water inlet 81a and the water outlet 81b are connected with a water tank through water pipes, a second rotating shaft 7 penetrates through the shell 81 and is concentrically fixed on the second rotating shaft 7 along with the rotary disc 82, the coil spring 83 is arranged on the following rotary disc 82 and synchronously rotates along with the rotary disc 82, the spiral direction of the coil spring 83 is the same as the rotating direction of the coil spring 83, and the friction plate 84 is fixedly arranged on; the coil spring 83 is driven by the rotary disc 82 to rotate, the coil spring 83 deforms outwards under the action of centrifugal force, the friction plate 84 is enabled to cling to the inner wall of the shell 81 and rub, speed reduction is achieved, cooling water in the shell 81 is discharged from the water outlet 81b under the rotating action of the coil spring 83, the cooling water passes through the water tank through a water pipe and enters from the water inlet 81a, the cooling water circulates in the shell 81 and the water tank, heat generated by friction is taken away, and the cooling effect is achieved.

In order to adjust the tension of the coil spring 83, a circle of limiting clamping grooves 831 are formed in the center of the coil spring 83, a limiting column 821 is fixedly arranged along with the center of the turntable 82, an adjusting clamping piece 822 is hinged to the top end of the limiting column 821, and the adjusting clamping piece 822 can enter different limiting clamping grooves 831 to adjust the opening degree of the coil spring 83.

In this embodiment, a large gear 51 is concentrically and fixedly disposed on the first rotating shaft 5, a small gear 71 is concentrically and fixedly disposed on the second rotating shaft 7, the large gear 51 is engaged with the small gear 71, and the first rotating shaft 5 drives the second rotating shaft 7 to rotate through the cooperation of the large gear 51 and the small gear 71.

In order to increase friction and play a role of protection, the end face of the permanent magnet disc 3 is provided with a first rubber sheet 31, the end face of the electromagnet disc 6 is provided with a second rubber sheet 61, and the first rubber sheet 31 and the second rubber sheet 61 can be in contact with each other.

For convenient mounting and dismounting, the housing 81 comprises a rear shell 811 and a cover plate 812, and the rear shell 811 and the cover plate 812 are hermetically fixed by bolt assemblies 813.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a flywheel brake, is including connecting the flywheel axle on the press, and be fixed in flywheel epaxial flywheel, its characterized in that: a mounting hole is formed in the center of the flywheel shaft, a sliding rod is arranged in the mounting hole in a sliding manner, a tension spring is arranged between the sliding rod and the flywheel shaft and used for forcing the sliding rod to slide backwards, and a permanent magnet disc is fixedly arranged at the front end of the sliding rod;

2. A flywheel brake as claimed in claim 1, wherein: the central position of the coil spring is provided with a circle of limiting clamping grooves, a limiting column is fixedly arranged along with the central position of the rotary table, the top end of the limiting column is hinged with an adjusting card, and the adjusting card can enter different limiting clamping grooves to adjust the opening degree of the coil spring.

3. A flywheel brake as claimed in claim 1, wherein: the first rotating shaft is concentrically and fixedly provided with a gear wheel, the second rotating shaft is concentrically and fixedly provided with a pinion, the gear wheel is meshed with the pinion, and the first rotating shaft drives the second rotating shaft to rotate through the matching of the gear wheel and the pinion.

4. A flywheel brake as claimed in claim 1, wherein: the permanent magnet disc end face is provided with a first rubber sheet, the electromagnet disc end face is provided with a second rubber sheet, and the first rubber sheet and the second rubber sheet can be abutted.

5. A flywheel brake as claimed in claim 1, wherein: the shell comprises a rear shell and a cover plate, and the rear shell and the cover plate are fixed in a sealing mode through a bolt assembly.