阅读说明：本技术 一种基于鼓式制动器的制动鼓盘机构 (Drum brake-based brake drum mechanism ) 是由 周长虹 于 2020-04-10 设计创作，主要内容包括：本发明涉及车辆鼓式制动设备技术领域,且公开了一种基于鼓式制动器的制动鼓盘机构,包括转换动力机构,转换动力机构的内腔活动套装有活动磁套,活动磁套内壁的左右两侧分别固定安装有挤压套筒Ⅰ和挤压套筒Ⅱ,且固定底座的一侧与转换动力机构的一侧固定连接。该基于鼓式制动器的制动鼓盘机构,对于挤压套筒Ⅰ和挤压套筒Ⅱ上固定压块的设置配合制动刹车片,可以将鼓式制动器中的刹车片分成两组,在一组温度过高时可以无缝切换到另一组刹车片上以继续进行工作,与现有的鼓式制动其相比,可以有效的防止单组刹车片在长时间的连续工作时温度过高而出现热衰退的现象,进而有效的提高了该鼓式制动器在长时间工作时的安全性及可靠性。(The invention relates to the technical field of vehicle drum brake equipment, and discloses a drum brake mechanism based on a drum brake, which comprises a conversion power mechanism, wherein a movable magnetic sleeve is movably sleeved in an inner cavity of the conversion power mechanism, an extrusion sleeve I and an extrusion sleeve II are respectively and fixedly arranged on the left side and the right side of the inner wall of the movable magnetic sleeve, and one side of a fixed base is fixedly connected with one side of the conversion power mechanism. This drum brake mechanism based on drum brake, to the setting cooperation brake block of fixed briquetting on extrusion sleeve I and extrusion sleeve II, can be divided into two sets of with the brake block in the drum brake, can seamless switching to another group of brake block in order to continue work when a set of high temperature, compare it with current drum brake, can effectually prevent to singly organize the brake block too high and the phenomenon that the heat fading appears when long-time continuous operation, and then the effectual security and the reliability that improves this drum brake when long-time work.)

1. A drum brake-based drum mechanism comprising a power conversion mechanism (1), characterized in that: the inner cavity of the conversion power mechanism (1) is movably sleeved with a movable magnetic sleeve (2), the left side and the right side of the inner wall of the movable magnetic sleeve (2) are respectively and fixedly provided with an extrusion sleeve I (3) and an extrusion sleeve II (4), three groups of fixed pressing blocks (5) distributed in an annular array are respectively arranged inside the extrusion sleeve I (3) and the extrusion sleeve II (4), a fixed base (6) is movably sleeved inside the extrusion sleeve I (3) and the extrusion sleeve II (4), one side of the fixed base (6) is fixedly connected with one side of the conversion power mechanism (1), the surface of the other side of the fixed base (6) is provided with a mounting groove hole (7), a reset spring (8) is arranged inside the mounting groove hole (7), and a connecting pressing rod (9) is movably sleeved inside the mounting groove hole (7) and above the reset spring (8), the brake device is characterized in that a brake pad (10) is fixedly mounted at the top end of the connecting pressing rod (9), the brake pad (10) is located in the middle of the inner cavities of the extrusion sleeve I (3) and the extrusion sleeve II (4), and a fixed sealing cover (11) is fixedly mounted on the other side of the fixed base (6) through a countersunk head bolt.

2. A drum brake based brake drum mechanism according to claim 1, wherein: the one end of fixed briquetting (5) is established to the cut-out structure, and is located the fixed briquetting (5) on extrusion sleeve I (3) and extrusion sleeve II (4) cut-out direction and all arranges to its inboard, and the mounted position that is located three groups of fixed briquetting (5) on extrusion sleeve I (3) and extrusion sleeve II (4) respectively simultaneously staggers each other.

3. A drum brake based brake drum mechanism according to claim 1, wherein: one end of each brake pad (10) is of a split structure which is the same as that of the extrusion sleeve I (3), the number of the brake pads (10) is set to six groups which are respectively arranged in an annular array, and meanwhile, the six groups of brake pads (10) are mutually staggered and arranged by taking the split direction as a reference.

4. A drum brake based brake drum mechanism according to claim 1, wherein: the width of the bottom of one side of the split of the fixed pressing block (5) is larger than the width of the top of one side of the split of the brake pad (10), and the front and back thickness of the brake pad (10) is equal to the distance between two groups of fixed pressing blocks (5) on the extrusion sleeve I (3) and the extrusion sleeve II (4) respectively.

5. A drum brake based brake drum mechanism according to claim 1, wherein: the interior of the conversion power mechanism (1) is connected with the control power supply through a carbon brush, a temperature sensor is arranged in the conversion power mechanism (1) and connected with the control system, and a feedback connection system is formed between the control power supply and the control system.

Technical Field

The invention relates to the technical field of vehicle drum brake equipment, in particular to a drum brake mechanism based on a drum brake.

Background

Drum brakes, which are one of the commonly used braking modes for automobiles, mainly utilize a stationary brake pad in a brake drum to rub against an inner surface of a friction drum rotating along with the rotation of a wheel to generate a corresponding frictional force to reduce the rotation speed of the wheel, thereby achieving the purpose of braking.

Wherein, the brake shoe in the drum brake and the brake block that the wheel-mounted rotated when taking place friction braking, can produce more heat because of the looks mutual friction between the two, can't be by rapid dissipation at sealed brake drum, thereby lead to the temperature of brake block along with the quick rise of the time of brake, and then lead to the coefficient of friction on brake block surface to reduce, lead to its braking efficiency of drum brake to descend and the phenomenon that the heat is decline appears, the major incident that the brake became invalid appears in the time even, there is great potential safety hazard, therefore, an urgent need for a brake drum dish mechanism for drum brake, can effectually avoid it to appear the phenomenon that the heat is declined at long-time braking in-process.

Disclosure of Invention

Technical problem to be solved

The invention provides a drum brake-based brake drum mechanism, which has the advantages of brake pads capable of being automatically switched according to the temperature of the brake pads, no heat fading phenomenon in the long-time braking process, and high safety and reliability, and solves the problems that when the friction braking is carried out on the brake shoes and the brake pads rotating along with wheels in the existing drum brake, the friction coefficient on the surfaces of the brake pads is reduced, the braking efficiency of the drum brake is reduced, the heat fading phenomenon is caused, even major safety accidents of brake failure occur, and great potential safety hazards exist.

(II) technical scheme

The invention provides the following technical scheme: a drum brake-based brake drum disc mechanism comprises a switching power mechanism, wherein a movable magnetic sleeve is movably sleeved in an inner cavity of the switching power mechanism, an extrusion sleeve I and an extrusion sleeve II are fixedly mounted on the left side and the right side of the inner wall of the movable magnetic sleeve respectively, three groups of fixed pressing blocks distributed in an annular array are arranged in the extrusion sleeve I and the extrusion sleeve II respectively, a fixed base is movably sleeved in the extrusion sleeve I and the extrusion sleeve II, one side of the fixed base is fixedly connected with one side of the switching power mechanism, a mounting slotted hole is formed in the surface of the other side of the fixed base, a reset spring is arranged in the mounting slotted hole, a connecting pressing rod is movably sleeved in the mounting slotted hole and above the reset spring, a brake pad is fixedly mounted at the top end of the connecting pressing rod and located in the middle of the inner cavities of the extrusion sleeve I and the extrusion sleeve II, and a fixed sealing cover is fixedly arranged on the other side of the fixed base through a countersunk head bolt.

Preferably, the one end of fixed briquetting is established to the cut-out structure, and is located the fixed briquetting on extrusion sleeve I and the extrusion sleeve II's cut-out direction and all arranges to its inboard, staggers each other in the mounted position of three group's fixed briquetting on extrusion sleeve I and the extrusion sleeve II respectively simultaneously.

Preferably, one end of each brake pad is of a split structure which is the same as that of the extrusion sleeve I, the number of the brake pads is set to be six groups which are respectively arranged in an annular array, and meanwhile, the six groups of brake pads are mutually staggered and arranged by taking the split direction as a reference.

Preferably, the width of the bottom of one side of the split of the fixed pressing block is larger than the width of the top of one side of the split of the brake pad, and the front and back thickness of the brake pad is equal to the distance between two groups of fixed pressing blocks on the extrusion sleeve I and the extrusion sleeve II respectively.

Preferably, the interior of the switching power mechanism is connected with the control power supply through a carbon brush, a temperature sensor is arranged in the switching power mechanism and connected with the control system, and a feedback connection system is formed between the control power supply and the control system.

(III) advantageous effects

The invention has the following beneficial effects:

1. this drum brake mechanism based on drum brake, to the setting cooperation brake block of fixed briquetting on extrusion sleeve I and extrusion sleeve II, can be divided into two sets of with the brake block in the drum brake, can seamless switching to another group of brake block in order to continue work when a set of high temperature, compare it with current drum brake, can effectually prevent to singly organize the brake block too high and the phenomenon that the heat fading appears when long-time continuous operation, and then the effectual security and the reliability that improves this drum brake when long-time work.

2. This brake drum dish mechanism based on drum brake, to the limit of the last cut structure of fixed briquetting and direction of installation and position on extrusion sleeve I and extrusion sleeve II, cooperate the setting on the brake block of braking simultaneously, so that come to push sleeve I and extrusion sleeve II formation front and back removal through switching power mechanism, and then force and switch different other brake blocks of group in order to carry out work, make the jam can not appear in the comparatively flow of whole switching action, and then lead to the phenomenon that reaction time and braking distance lengthen, further improvement this drum brake's stability and reliability.

3. According to the drum brake-based brake drum mechanism, the automatic control of the drum brake can be realized for the connection arrangement between the conversion power mechanism and the control system, so that the drum brake can automatically judge whether the brake block needs to be switched in the working process, and the driver does not need to independently judge according to the braking time and force, so that the controllability of the drum brake mechanism is effectively improved.

Drawings

FIG. 1 is an exploded view of the structure of the present invention;

FIG. 2 is a schematic half-section view of the structure of the present invention;

FIG. 3 is a cross-sectional view of a structural conversion power mechanism of the present invention;

FIG. 4 is an installation view of the structural fixing press block of the present invention;

FIG. 5 is an installed cross-sectional view of a structural holding block of the present invention;

FIG. 6 is a schematic structural view of a fixing base according to the present invention;

FIG. 7 is a schematic view of the mounting of the structural fixing base and the brake pads of the present invention;

FIG. 8 is a schematic structural view of a brake pad of the present invention;

fig. 9 is a schematic structural view of the fixing cover of the present invention.

In the figure: 1. a power conversion mechanism; 2. a movable magnetic sleeve; 3. extruding the sleeve I; 4. extruding the sleeve II; 5. fixing a pressing block; 6. a fixed base; 7. mounting a slotted hole; 8. a return spring; 9. connecting a pressure lever; 10. braking the brake pad; 11. and (5) fixing the sealing cover.

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. 1-9, a drum brake-based brake drum mechanism includes a power conversion mechanism 1, a movable magnetic sleeve 2 is movably sleeved in an inner cavity of the power conversion mechanism 1, an extrusion sleeve i 3 and an extrusion sleeve ii 4 are respectively and fixedly installed on left and right sides of an inner wall of the movable magnetic sleeve 2, three groups of fixed pressing blocks 5 arranged in an annular array are respectively arranged in the extrusion sleeve i 3 and the extrusion sleeve ii 4, a fixed base 6 is movably sleeved in the extrusion sleeve i 3 and the extrusion sleeve ii 4, one side of the fixed base 6 is fixedly connected with one side of the power conversion mechanism 1, a mounting slot hole 7 is formed in the surface of the other side of the fixed base 6, a return spring 8 is arranged in the mounting slot hole 7, a connecting pressing rod 9 is movably sleeved in the mounting slot hole 7 and positioned above the return spring 8, a brake pad 10 is fixedly installed at the top end of the connecting pressing rod, and the brake pad 10 is located the middle part of the inner chamber of the extrusion sleeve I3 and the extrusion sleeve II 4, and the other side of the fixed base 6 is fixedly provided with a fixed sealing cover 11 through a countersunk head bolt.

The arrangement of the fixing pressing block 5 on the extrusion sleeve I3 and the extrusion sleeve II 4 is matched with the brake pad 10, the brake pads in the drum brake can be divided into two groups, when one group of brake pads is overhigh in temperature, the brake pads can be seamlessly switched to the other group of brake pads to continue working, the phenomenon that the single group of brake pads is overhigh in continuous working temperature for a long time and heat fading occurs is prevented, and the stability and the reliability of the drum brake during working are effectively improved.

Wherein, to the setting of reset spring 8 and connection depression bar 9 on unable adjustment base 6, under the effect of the elastic potential energy of reset spring 8 and centrifugal force for install the brake block 10 on reset spring 8 when whether the car is when moving or static, all can keep in certain clearance with the brake shoe, make it can not contact with taking place between the brake shoe under normal operating condition, in order to ensure the normal power output of vehicle, guarantee the normal life of brake block 10 simultaneously.

Among this technical scheme, the one end of fixed briquetting 5 is established to the cut-out structure, and is located the fixed briquetting 5's on extrusion sleeve I3 and the extrusion sleeve II 4 cut-out direction and all arranges to its inboard, and the mounted position that is located three groups of fixed briquetting 5 on extrusion sleeve I3 and the extrusion sleeve II 4 respectively simultaneously staggers each other.

In the technical scheme, one end of each brake pad 10 is of a split structure which is the same as that of the extrusion sleeve I3, the number of the brake pads 10 is set to six groups and the six groups are respectively arranged in an annular array, and meanwhile, the six groups of brake pads 10 are mutually staggered and arranged by taking the split direction as a reference.

Wherein, to the limit of the last trompil structure of briquetting 5 and direction of installation and position on extrusion sleeve I3 and extrusion sleeve II 4, cooperate the setting on the brake block 10 simultaneously, so that come to extrusion sleeve I3 and extrusion sleeve II 4 through switching power unit 1 and form the removal of front and back, and then force and switch different other brake blocks of group in order to carry out work, make the jam can not appear in the comparatively flow of whole switching action, and then lead to reaction time and the phenomenon that the braking distance becomes long, further improvement this drum brake's stability and reliability.

In this technical scheme, the width of 5 cuts open one side bottoms of fixed briquetting is greater than the width at 10 cuts open one side tops of brake block, and brake block 10 front and back thickness equals to be located respectively extrusion sleeve I3 and extrusion sleeve II 4 go up the interval between two sets of fixed briquetting 5.

Wherein, to the setting of brake block 10 for fixed briquetting 5 structural position and size for fixed briquetting 5 can form stable pressure to it when extrusion switches brake block 10 during operation, makes it can not appear the phenomenon of relative slip when receiving extrusion friction, and stability and security are higher.

In the technical scheme, the interior of the switching power mechanism 1 is connected with a control power supply through a carbon brush, a temperature sensor is arranged in the switching power mechanism 1 and connected with a control system, and a feedback connection system is formed between the control power supply and the control system.

The connection arrangement between the power conversion mechanism 1 and the control system can realize automatic control of the drum brake, so that the drum brake can automatically judge whether the brake pad 10 needs to be switched in the working process, and a driver does not need to independently judge according to the braking time and force, thereby effectively improving the controllability of the drum brake mechanism.

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

firstly, a mechanism such as a brake shoe in a drum brake is fixedly arranged on the brake drum mechanism, the whole structure is arranged on a wheel shaft of a vehicle, meanwhile, the pressing between a fixed pressing block 5 on a pressing sleeve I3 and a brake pad 10 is ensured and a return spring 8 is compressed under the initial state, when no braking measure is implemented, under the action of the elastic potential energy of the return spring 8 and the centrifugal force of the vehicle, no matter the vehicle is in a moving or static state, a certain gap can be always kept between the brake pad 10 and the brake shoe, when a driver presses down a brake pedal to implement braking, the brake shoe is outwards opened and generates pressing friction with the inner wall of the brake pad 10 to generate braking force so as to force the vehicle to decelerate or stop, when the driver encounters a long downhill for braking process, the temperature in the drum brake is rapidly raised due to the friction between the brake pad 10 and the brake shoe, the temperature sensor arranged in the temperature sensor catches and feeds back the temperature sensor to the control system, then the feedback system starts the conversion power mechanism 1 through the control power supply and drives the extrusion sleeve I3, the extrusion sleeve II 4 and the fixed pressing block 5 arranged on the extrusion sleeve I to move under the action of the movable magnetic sleeve 2, so that the fixed pressing block 5 on the extrusion sleeve I3 is separated from the brake pad 10 and drives the connecting pressing rod 9 and the brake pad 10 to move upwards and be far away from the brake pad 10 under the action of the elastic potential energy of the return spring 8, meanwhile, the fixed pressing block 5 on the extrusion sleeve II 4 rapidly presses the other three groups of brake pads 10 and enables the other three groups of brake pads 10 to move downwards to be contacted with the brake shoes, friction is generated to realize braking operation on the vehicle, when the temperature of the fixed pressing block 5 on the extrusion sleeve II 4 is overhigh, the operation is repeated, and the other three groups of brake pads 10 are pressed through the fixed pressing block 5, the friction between the fixed pressing block and the brake shoe is caused, the fixed pressing block 5 can be sufficiently cooled in the back-and-forth switching process, the heat fading phenomenon of the drum brake caused by overhigh temperature in the long-time working process is effectively avoided, and the stability and the safety are high.

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.