CN113027952A

CN113027952A - Magnetic braking mechanism

Info

Publication number: CN113027952A
Application number: CN202110213409.1A
Authority: CN
Inventors: 张中涛
Original assignee: Individual
Current assignee: Dongying Baofeng Auto Parts Co ltd
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-06-25
Anticipated expiration: 2041-02-26
Also published as: CN113027952B

Abstract

The invention relates to the technical field of shaft type braking equipment, and discloses a magnetic type braking mechanism which comprises a transmission main shaft, wherein two sides of the outer surface of the transmission main shaft are respectively provided with a group of permanent magnet clamping sleeves, one side of the outer part of each permanent magnet clamping sleeve is fixedly provided with a heat insulation sheet, the other side of each heat insulation sheet is fixedly provided with a heat insulation sheet, the outer parts of two ends of the transmission main shaft are respectively provided with a group of heat sensing mechanisms, the outer surface of each heat sensing mechanism is fixedly provided with a fixing support, the inner side of each fixing support is fixedly provided with a brake disc, and a plurality of groups of. This magnetic-type brake mechanism cooperates the setting of feedback current system between electromagnetic means and the heat sensing mechanism simultaneously through two sets of heat shields and brake disc, can prevent effectively that a certain set of heat shield and brake disc from the phenomenon that the high temperature appears the heat decline under long-time braking operation, and then has improved the security and the reliability of this brake mechanism in the use.

Description

Magnetic braking mechanism

Technical Field

The invention relates to the technical field of shaft braking equipment, in particular to a magnetic braking mechanism.

Background

At present, most of existing brake mechanisms utilize mutual extrusion between a friction plate and a brake disc to generate strong frictional resistance and generate corresponding braking force to force a main shaft or a corresponding rotating mechanism to decelerate or stop, the magnitude of the braking force mainly depends on the magnitude of friction pressure, the larger the friction pressure is, the larger the braking force is, however, when the friction pressure is utilized to realize braking, a large amount of generated heat energy cannot be rapidly dissipated under a long-time high load or a continuous braking working state, so that the temperature of the friction plate and the brake disc is rapidly increased, the friction coefficient is reduced due to high temperature, and a heat fading phenomenon occurs, so that the braking performance of the brake mechanism is rapidly weakened, and even a major safety accident of brake failure occurs.

Therefore, a braking mechanism is needed to effectively avoid the situation that the braking performance of the conventional braking mechanism is reduced due to heat fading caused by low heat dissipation efficiency.

Disclosure of Invention

Technical problem to be solved

The invention provides a magnetic braking mechanism, which has the advantages of rapid conversion of friction plates and no heat fading in the continuous braking process, and solves the problems that when the braking is realized by using friction pressure, a large amount of generated heat energy cannot be rapidly dissipated under a long-time high load or a continuous braking working state, so that the temperature of the friction plates and a brake disc is rapidly increased, the friction coefficient is reduced due to high temperature, the heat fading phenomenon occurs, and finally the braking performance of the braking mechanism is rapidly weakened, even the major safety accident of braking failure occurs.

(II) technical scheme

The invention provides the following technical scheme: the utility model provides a magnetic braking mechanism, includes the transmission main shaft, the both sides of transmission main shaft surface are equipped with a set of permanent magnetism cutting ferrule respectively, the outside one side fixed mounting of permanent magnetism cutting ferrule has the heat insulating sheet, and the opposite side fixed mounting of heat insulating sheet has the heat insulating sheet, the outside at transmission main shaft both ends is equipped with a set of heat sensing mechanism respectively, heat sensing mechanism's fixed surface installs the fixed bolster, the inboard fixed mounting of fixed bolster has the brake disc, and is two sets of the fixed bolster's inside fixed mounting has a plurality of groups of fixed connecting rods, the middle part of fixed connecting rod surface just is located two sets of permanent magnetism cutting ferrule outlying middle part fixed mounting and has electromagnetic means, the fixed stop collar that has cup jointed in middle part of transmission main shaft surface, and the inboard contact of a set of.

Preferably, the inner sides of the permanent magnet cutting sleeves are arranged to be in a conical structure, and the magnetism of one side of the conical structure on the two groups of permanent magnet cutting sleeves is attracted.

Preferably, the electromagnetic device is provided with a left part and a right part which are independent from each other, and the magnetism generated by the two parts is respectively repelled with the magnetism of the permanent magnetic card sleeve in the corresponding direction.

Preferably, an electric feedback connection system is formed between the inside of the heat sensing mechanism and the inside of the electromagnetic device, and a temperature feedback conversion threshold value is arranged inside the electromagnetic device.

Preferably, the electromagnetic device is internally provided with a friction and wear control system for adjusting the basic current of the braking mechanism when the braking mechanism is started according to the braking pressure and the braking duration of the heat insulation sheet.

(III) advantageous effects

The invention has the following beneficial effects:

1. this magnetic force formula brake mechanism, cooperate the setting of feedback current system between electromagnetic means and the heat sensing mechanism simultaneously through two sets of heat shields and brake disc, so as to start a certain set of heat shield and brake disc alone, and when the temperature of this set of heat shield and brake disc was too high, can be timely convert to another set of heat shield and brake disc and realize the braking operation to driving the main shaft, compare with current brake mechanism, can effectively prevent that the phenomenon that the temperature was too high and the heat is subsided appears under long-time braking operation of a certain set of heat shield and brake disc, and then improved this brake mechanism's security and reliability in the use.

2. This magnetic-type brake mechanism to the setting of the inside friction and wear control system of electromagnetic means to the operating duration and the pressure size of two sets of permanent magnetism cutting ferrule of even distribution make the wearing and tearing state of two sets of permanent magnetism cutting ferrule close, and can not cause the excessive wearing and tearing of a certain set of permanent magnetism cutting ferrule, the unworn phenomenon of another group of permanent magnetism cutting ferrule, and then improved effectively and all can provide good braking efficiency when the operating condition of conversion permanent magnetism cutting ferrule.

3. The magnetic braking mechanism can effectively adjust the size of the gap between the two groups of permanent magnet clamping sleeves and the two corresponding groups of brake discs when the braking mechanism is in an initial state by setting a friction and wear control system in the electromagnetic device, so that the braking mechanism is ensured to have good braking efficiency when being started, and the phenomenon that the braking performance is reduced due to the change of the gap between the heat insulation sheet and the brake disc caused by normal wear of the heat insulation sheet can not occur.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the structure of the present invention;

fig. 3 is a schematic view of the mounting structure of the electromagnetic device of the present invention.

In the figure: 1. a transmission main shaft; 2. a permanent magnet card sleeve; 3. a heat insulating sheet; 4. a friction plate; 5. a heat sensing mechanism; 6. fixing a bracket; 7. a brake disc; 8. fixing the connecting rod; 9. an electromagnetic device; 10. and a limiting sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, a magnetic brake mechanism includes a transmission spindle 1, a set of permanent magnetic cutting sleeves 2 are respectively disposed on two sides of the outer surface of the transmission spindle 1, a heat insulation sheet 3 is fixedly mounted on one side of the outer portion of the permanent magnetic cutting sleeve 2, and the other side fixed mounting of heat insulating sheet 3 has heat insulating sheet 4, the outside at transmission main shaft 1 both ends is equipped with a set of heat sensing mechanism 5 respectively, the fixed surface of heat sensing mechanism 5 installs fixed bolster 6, the inboard fixed mounting of fixed bolster 6 has brake disc 7, the inside fixed mounting of two sets of fixed bolsters 6 has a plurality of fixed connecting rod 8 of group, the middle part of fixed connecting rod 8 surface and the middle part that is located two sets of permanent magnetism cutting ferrule 2 outlying fixed mounting have electromagnetic means 9, the middle part fixed hub connection of transmission main shaft 1 surface has spacing sleeve 10, and the both ends of spacing sleeve 10 are respectively with the inboard lateral contact of a set of permanent magnetism cutting ferrule 2.

Wherein, to the setting of two sets of heat shields 4 and brake disc 7 to start a certain set of heat shield 4 and brake disc 7 alone, when this heat shield 4 and brake disc 7's temperature was too high, timely conversion realized the braking action to another set of heat shield 4 and brake disc 7, with effectively prevent that certain set of heat shield 4 and brake disc 7 from the phenomenon that the temperature is too high and appear heat fading under long-time braking operation.

In the technical scheme, the inner sides of the permanent magnet cutting sleeves 2 are arranged to be in a conical structure, and the magnetism of one side of the conical structure on the two groups of permanent magnet cutting sleeves 2 is attracted.

The two groups of permanent magnetic cutting sleeves 2 are arranged in a magnetic attraction manner, so that the braking mechanisms can be mutually attracted without frictional contact between the braking discs 7 on the corresponding sides in the initial state, the power loss of the braking mechanisms on the transmission main shaft 1 in the non-working state is effectively reduced, and meanwhile, the problem of ineffective abrasion of the heat insulation plates 4 or the braking discs 7 is avoided.

In the technical scheme, the electromagnetic device 9 is respectively provided with a left part and a right part which are independent from each other, and the magnetism generated by the two parts is respectively repelled with the magnetism of the permanent magnetic card sleeve 2 in the corresponding direction.

In the technical scheme, an electric feedback connection system is formed between the interior of the heat sensing mechanism 5 and the interior of the electromagnetic device 9, and a temperature feedback conversion threshold value is arranged in the electromagnetic device 9.

The left part and the right part of the electromagnetic device 9 are simultaneously matched with the arrangement of a feedback electric connection system between the electromagnetic device and the heat sensing mechanism 5, so that the working states of the two groups of permanent magnet cutting sleeves 2 are respectively started and controlled according to the temperature fed back by the heat sensing mechanism 5, the working states of the two groups of permanent magnet cutting sleeves 2 are automatically converted under the condition that the braking force applied to the transmission main shaft 1 is continuous, and the stability and the reliability are high.

In the technical scheme, a friction and wear control system is arranged in the electromagnetic device 9 and used for adjusting the basic current of the brake mechanism during starting according to the brake pressure and the brake duration of the heat insulation sheet 4.

Wherein, to the setting of the inside friction and wear control system of electromagnetic means 9 to the operating duration and the pressure size of two sets of permanent magnetism cutting ferrule 2 of even distribution make the wearing and tearing state of two sets of permanent magnetism cutting ferrule 2 similar, and can not cause the excessive wearing and tearing of a certain set of permanent magnetism cutting ferrule 2, the phenomenon that another group of permanent magnetism cutting ferrule 2 is unworn, and then improved effectively when changing the operating condition of permanent magnetism cutting ferrule 2, it can provide good braking efficiency all.

Meanwhile, when the braking mechanism is in an initial state, the size of the gap between each of the two groups of permanent magnet cutting sleeves 2 and the corresponding two groups of brake discs 7 can be effectively adjusted, so that the braking mechanism is ensured to have good braking efficiency when being started, and the phenomenon that the braking performance is reduced due to the change of the gap between the heat insulation sheet 4 and the brake discs 7 caused by normal abrasion of the heat insulation sheet can be avoided.

The use method and the working principle of the embodiment are as follows:

firstly, the braking mechanism is fixedly connected to a prime motor and a driven motor through a transmission main shaft 1, a circuit control system on the braking mechanism is well connected, the electromagnetic device 9 does not generate any magnetic force in an initial state, and under the condition that the two groups of permanent magnet cutting sleeves 2 are magnetically attracted, the two groups of permanent magnet cutting sleeves 2 are matched with the limiting sleeve 10 to keep the middle positions of the transmission main shaft 1 to rotate along with the transmission main shaft 1 all the time, when braking is needed, the electromagnetic device 9 on one side is selected to be started and generate an influencing magnetic field according to the judgment on the abrasion of the heat insulation sheet 4 on the electromagnetic device 9, so that the permanent magnet cutting sleeve 2 on the corresponding side moves outwards, and meanwhile, the heat insulation sheet 4 on the electromagnetic device is driven to move outwards to be in frictional contact with a brake disc 7 on a fixed support 6, and braking force is generated to force the;

when a certain group of heat insulation sheets 4 is in contact with the brake disc 7 for a long time to implement braking, the temperature on the heat insulation sheets is gradually increased and is monitored by the heat sensing mechanism 5 to be fed back to the electromagnetic device 9 in real time, when the temperature on the heat insulation sheets reaches a preset threshold value, the electromagnetic device 9 synchronously starts the other part and generates a corresponding magnetic field to drive the other group of permanent magnet cutting sleeves 2 to move outwards, so that the heat insulation sheets 4 on the heat insulation sheets are in contact with the other group of brake discs 7 to generate corresponding friction braking force, and then the current of the part on the side with the overhigh temperature is automatically cut off, so that the current returns to the initial position under the magnetic attraction of the permanent magnet cutting sleeves 2;

and when strong braking force is needed due to emergency braking, the two groups of permanent magnet cutting sleeves 2 can be started simultaneously to rub and extrude the brake disc 7 on the corresponding side, so that corresponding braking force is generated for emergency stop of the transmission main shaft 1.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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

Claims

1. The utility model provides a magnetic force formula arrestment mechanism, includes transmission main shaft (1), its characterized in that: the heat insulation device is characterized in that a group of permanent magnet clamping sleeves (2) are respectively arranged on two sides of the outer surface of the transmission main shaft (1), a heat insulation sheet (3) is fixedly arranged on one side of the outer portion of each permanent magnet clamping sleeve (2), a heat insulation sheet (4) is fixedly arranged on the other side of each heat insulation sheet (3), a group of heat sensing mechanisms (5) are respectively arranged on the outer portions of two ends of the transmission main shaft (1), a fixed support (6) is fixedly arranged on the outer surface of each heat sensing mechanism (5), a brake disc (7) is fixedly arranged on the inner side of each fixed support (6), a plurality of groups of fixed connecting rods (8) are fixedly arranged in the two groups of fixed supports (6), an electromagnetic device (9) is fixedly arranged in the middle of the outer surface of each fixed connecting rod (8) and in the middle of the outer surface of the, and two ends of the limiting sleeve (10) are respectively contacted with the inner sides of the group of permanent magnetic clamping sleeves (2).

2. A magnetic brake mechanism according to claim 1, wherein: the inner sides of the permanent magnet cutting sleeves (2) are of conical structures, and the magnetism of one side of the conical structures on the two groups of permanent magnet cutting sleeves (2) is attracted.

3. A magnetic brake mechanism according to claim 1, wherein: the electromagnetic device (9) is respectively provided with a left part and a right part which are independent from each other, and the magnetism generated by the two parts is respectively repelled with the magnetism of the permanent magnetic card sleeve (2) in the corresponding direction.

4. A magnetic brake mechanism according to claim 1, wherein: an electric feedback connection system is formed between the interior of the heat sensing mechanism (5) and the interior of the electromagnetic device (9), and a temperature feedback conversion threshold value is arranged in the electromagnetic device (9).

5. A magnetic brake mechanism according to claim 1, wherein: the interior of the electromagnetic device (9) is provided with a friction and wear control system for adjusting the basic current of the brake mechanism when the brake mechanism is started according to the brake pressure and the brake duration of the heat insulation sheet (4).