阅读说明：本技术 闸瓦托及闸瓦固定机构 (Brake head and brake shoe fixing mechanism ) 是由 赵彦利 吕换小 韩晓辉 孙新海 焦标强 张庆爽 李业明 李辉 王正杰 郭斌 郝亮 于 2021-08-19 设计创作，主要内容包括：本发明为一种闸瓦托及闸瓦固定机构,其中,闸瓦托包括闸瓦托体,在闸瓦托体的侧部设有间隔的两个凸起,两个凸起内均嵌有闸瓦挡块,闸瓦挡块能向两个凸起之间的间隔区域内伸出或能缩回凸起内,并在凸起内设有与闸瓦挡块连接的弹性复位件,闸瓦挡块能在闸瓦的背部套设在闸瓦托体后伸出并卡设在间隔区域内的闸瓦上。本发明的闸瓦托及闸瓦固定机构结构简单,对闸瓦拆装方便,且对闸瓦锁定可靠。(The invention relates to a brake head and a brake shoe fixing mechanism, wherein the brake head comprises a brake shoe support body, two bulges are arranged at the side part of the brake shoe support body at intervals, brake shoe stop blocks are embedded in the two bulges, the brake shoe stop blocks can extend out of or retract into the interval area between the two bulges, elastic reset pieces connected with the brake shoe stop blocks are arranged in the bulges, and the brake shoe stop blocks can extend out of and are clamped on brake shoes in the interval area after the back part of the brake shoes is sleeved on the brake shoe support body. The brake shoe support and the brake shoe fixing mechanism have simple structures, are convenient to assemble and disassemble the brake shoe, and are reliable to lock the brake shoe.)

1. A brake head, comprising a brake shoe body;

the side part of the brake shoe support body is provided with two bulges at intervals, brake shoe stop blocks are embedded in the two bulges, the brake shoe stop blocks can extend out of or retract into the interval area between the two bulges, and elastic reset pieces connected with the brake shoe stop blocks are arranged in the bulges; the brake shoe stop block can be sleeved on the back of the brake shoe and then extends out of the brake shoe support body and is clamped on the brake shoe in the interval area.

2. The brake head of claim 1,

the brake shoe block is characterized in that a mounting groove communicated with the end portion of the brake shoe block is arranged in the protrusion, the protrusion faces the side portion of the spacing area and is provided with a through hole communicated with the mounting groove, the elastic reset piece is arranged in the mounting groove, and the brake shoe block can be telescopically inserted into the through hole.

3. The brake head of claim 2,

the brake shoe stop block is provided with a limiting part, the limiting part is positioned in the mounting groove, and the size of the limiting part is larger than that of the through hole.

4. The brake head of claim 3,

the brake shoe block is provided with a guide inclined plane or a guide curved surface.

5. The brake head of claim 4,

the brake shoe stop block is a right-angle fan-shaped plate body, a limiting ring is arranged on one straight side face of the right-angle fan-shaped plate body in an outward protruding mode, the limiting ring forms the limiting portion, and the arc-shaped face of the right-angle fan-shaped plate body forms the guide curved face.

6. The brake head of claim 2,

the arch is of a cuboid structure, and the mounting groove is a square groove.

7. The brake head of claim 2,

The elasticity piece that resets is the torsional spring, two stabilizer blades of torsional spring are established respectively the cell wall of mounting groove with on the brake shoe dog.

8. The brake head of claim 7,

mounting holes and slots are respectively formed in the wall of the mounting groove and the brake shoe stop block, and the two support legs of the torsion spring are bent and then respectively inserted into the mounting holes and the slots; the bulge is also provided with a fabrication hole communicated with the mounting groove.

9. A brake shoe retaining mechanism, comprising:

the brake shoe comprises a brake shoe body and a mounting frame, wherein the mounting frame is arranged on the back of the brake shoe body, an accommodating cavity with an opening on at least one side is formed between the mounting frame and the back of the brake shoe body, two spigots are arranged on the mounting frame and positioned on the opposite sides of the opening, and the spigots are communicated with the accommodating cavity;

and a brake head according to any one of claims 1 to 8, said brake head being insertable into said receiving cavity, said projections being capable of passing through two of said sockets respectively, and said brake shoe stop being capable of extending out and being snapped onto said mounting bracket between said sockets.

10. Brake shoe fixing mechanism according to claim 9,

the mounting bracket comprises a U-shaped bracket body formed by two side plates and a back plate in a surrounding mode, the two side plates are connected with the back face of the brake shoe main body, an intermediate plate is connected between the back plate and the brake shoe main body, two sockets are formed in the two sides of the intermediate plate and the two side plates at intervals, and the brake shoe stop block can stretch out and be clamped on the intermediate plate.

Technical Field

The invention relates to the technical field of rail vehicle braking, in particular to a brake head and a brake shoe fixing mechanism.

Background

With the increasing popularization of high-speed motor train unit vehicles and the continuous increase of the speeds of urban rail vehicles, disc-shaped brakes are adopted for vehicle braking, and in order to ensure the wheel tread adhesion coefficient of the vehicles, a tread cleaning device is arranged on part of the vehicles, can remove foreign matters attached to the wheel treads, enables the wheel treads to be clean and dry, and improves the friction condition between wheels and steel rails.

Different manufacturers have different fixed mounting structures for tread cleaning brake shoes, and the fixed mounting structures comprise tile drill locking, bolt and locking block fixing, spring dovetail block fixing and the like. The installation interfaces of the brake shoes have various types, the installation interfaces of the brake shoes are different from factory to factory, and the locking types are also various. However, cleaning the brake shoe is a vulnerable and consumable part, which brings troubles to purchase and installation of the owner in the later period, and the problems of complex structure, inconvenient disassembly and assembly and unreliable locking commonly exist in the existing brake shoe installation mode.

Thus, the inventor of the present invention has developed a brake head and brake shoe retaining mechanism to overcome the shortcomings of the prior art by taking years of experience and practice in the related industries.

Disclosure of Invention

The invention aims to provide a brake shoe support and a brake shoe fixing mechanism, which have simple structure, convenient brake shoe disassembly and assembly and reliable brake shoe locking.

The purpose of the invention can be realized by adopting the following technical scheme:

the invention provides a brake head, which comprises a brake shoe body; the side part of the brake shoe support body is provided with two bulges at intervals, brake shoe stop blocks are embedded in the two bulges, the brake shoe stop blocks can extend out of the interval area between the two bulges or can retract into the bulges, and elastic reset pieces connected with the brake shoe stop blocks are arranged in the bulges; the brake shoe stop block can be sleeved on the back of the brake shoe and extend out of the brake shoe support body and is clamped on the brake shoe in the interval area.

In a preferred embodiment of the invention, the boss is internally provided with a mounting groove communicated with the end part of the boss, the side part of the boss facing the spacing area is provided with a through hole communicated with the mounting groove, the elastic resetting piece is arranged in the mounting groove, and the brake shoe stop block is telescopically inserted in the through hole.

In a preferred embodiment of the present invention, the brake shoe stop has a position-limiting portion, the position-limiting portion is located in the mounting groove, and the size of the position-limiting portion is larger than that of the through hole.

In a preferred embodiment of the invention, the brake shoe stop has a guide ramp or guide curve thereon.

In a preferred embodiment of the present invention, the brake shoe stop is a right-angled fan-shaped plate, one of the straight sides of the right-angled fan-shaped plate is provided with a limiting ring protruding outwards, the limiting ring forms a limiting portion, and the arc-shaped surface of the right-angled fan-shaped plate forms a guiding curved surface.

In a preferred embodiment of the present invention, the protrusion is a rectangular parallelepiped, and the mounting groove is a square groove.

In a preferred embodiment of the present invention, the elastic restoring member is a torsion spring, and two support legs of the torsion spring are respectively disposed on a wall of the mounting groove and the brake shoe stop.

In a preferred embodiment of the invention, a mounting hole and a slot are respectively arranged on the wall of the mounting groove and the brake shoe stop block, and two support legs of the torsion spring are respectively inserted into the mounting hole and the slot after being bent; the bulge is also provided with a fabrication hole communicated with the mounting groove.

The invention also provides a brake shoe fixing mechanism, comprising:

the brake shoe comprises a brake shoe body and a mounting frame, wherein the mounting frame is arranged on the back of the brake shoe body, an accommodating cavity with an opening at least on one side is formed between the mounting frame and the back of the brake shoe body, two sockets are arranged on the mounting frame and positioned on the opposite sides of the opening, and the sockets are communicated with the accommodating cavity;

and foretell brake head, brake head can insert and establish in the holding chamber, and two archs can wear out by two sockets respectively, and the brake shoe dog can stretch out and block establish on the mounting bracket between two sockets.

In a preferred embodiment of the invention, the mounting frame comprises a U-shaped frame body formed by enclosing two side plates and a back plate, the two side plates are connected with the back surface of the brake shoe main body, a middle plate is connected between the back plate and the brake shoe main body, two sockets are formed by the two sides of the middle plate and the space between the two side plates, and the brake shoe stop block can extend out and be clamped on the middle plate.

From the above, brake shoe support and brake shoe fixed establishment in the invention, through the cooperation of brake shoe dog and elasticity piece that resets, simple structure, when installing the brake shoe with the brake shoe from brake shoe support body side push can, when dismantling the brake shoe with the brake shoe dog impress after the arch alright take out the brake shoe, it is more convenient to brake shoe installation and dismantlement, need not operate with other instruments, dismouting efficiency is higher. And utilize the design that the dual elasticity resets piece and double brake tile dog, realized the design of dual fail safe anticreep, reset the piece back that became invalid as an elasticity, the elasticity of opposite side resets and also can satisfy fixed brake shoe completely and play the effect of anticreep, locks more reliably.

Drawings

The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:

FIG. 1: is a schematic structural diagram of the brake head provided by the invention.

FIG. 2: a side view of the brake head provided by the present invention.

FIG. 3: a brake head is provided for the present invention in cross-section with the brake shoe stop in the extended condition.

FIG. 4: a brake head is provided for this invention in a side view with the brake shoe stop in a retracted condition.

FIG. 5: is a cross-sectional view taken along a-a in fig. 4.

FIG. 6: the invention provides a schematic back view of a brake shoe.

FIG. 7: a side view of a brake shoe provided by the present invention.

FIG. 8: is a schematic structural diagram of a brake shoe fixing mechanism provided by the invention.

FIG. 9: a side view of a brake shoe retaining mechanism provided by the present invention.

The reference numbers illustrate:

1. a brake head;

11. a brake shoe carrier; 111. a connecting seat;

12. a protrusion; 121. mounting grooves; 122. a through hole; 123. mounting holes; 124. a fabrication hole;

13. a brake shoe stop block; 131. a limiting part; 132. a guide curved surface; 133. a slot;

14. an elastic reset member;

2. brake shoes;

21. a brake shoe body;

22. a mounting frame; 221. a side plate; 222. a back plate; 2221. avoiding the mouth; 223. a middle plate; 224. a socket;

23. An accommodating cavity.

Detailed Description

In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.

As shown in fig. 1 to 9, the present embodiment provides a brake head 1, which comprises a brake shoe body 11, two protrusions 12 spaced apart from each other are disposed on the side of the brake shoe body 11, a brake shoe stop 13 is embedded in each of the two protrusions 12, the brake shoe stop 13 can extend out of the space between the two protrusions 12 or can retract into the protrusions 12, and an elastic reset piece 14 connected to the brake shoe stop 13 is disposed in each of the protrusions 12. The brake shoe stop 13 can be sleeved on the back of the brake shoe 2 and extend out of the brake shoe carrier 11 and is clamped on the brake shoe 2 in the interval area.

When installation brake shoe 2, directly promote brake shoe 2, make brake shoe 2's back cover establish on brake shoe support body 11, push the in-process, in brake shoe dog 13 withdraws arch 12 earlier, after brake shoe 2 is pushed to the position, brake shoe dog 13 auto-eject and block on brake shoe 2 under the elasticity effect that elasticity reset piece 14 to the realization is fixed to brake shoe 2's installation. When brake shoe 2 is to be removed, brake shoe stop 13 can be manually pressed back into boss 12, and brake shoe 2 can be directly removed.

From this, brake head 1 in this embodiment is through the cooperation of brake shoe dog 13 and elasticity piece 14 that resets, simple structure, during installation brake shoe 2 with brake shoe 2 from brake shoe support body 11 side push can, when dismantling brake shoe 2 with brake shoe dog 13 impress behind the arch 12 alright take out brake shoe 2, it is more convenient to brake shoe 2 installation and dismantlement, need not operate with other instruments, dismouting efficiency is higher. And utilize the design of the double-elasticity piece 14 that resets and the double brake shoe dog 13, realized the design of dual fail-safe anticreep, reset 14 after the piece is invalid as an elasticity, the elasticity of opposite side resets and 14 also can satisfy fixed brake shoe 2 completely and play the effect of anticreep, locks more reliably.

In a specific implementation manner, in order to facilitate the installation of elastic restoring member 14 and brake shoe stopper 13, as shown in fig. 1 and 2, boss 12 has a mounting groove 121 communicating with its end, a through hole 122 communicating with mounting groove 121 is provided at a side portion of boss 12 facing the spacing region, elastic restoring member 14 is provided in mounting groove 121, and brake shoe stopper 13 is telescopically inserted in through hole 122.

In order to prevent the brake shoe block 13 from separating from the protrusion 12 when extending outward, the brake shoe block 13 is provided with a limiting part 131, the limiting part 131 is located in the mounting groove 121, and the size of the limiting part 131 is larger than that of the through hole 122. Brake shoe stop 13 has a guide ramp or curved guide surface 132 for smooth urging of brake shoe 2 into boss 12 during installation of brake shoe 2. When the back of the brake shoe 2 is pushed into the brake shoe carrier 11, the back of the brake shoe 2 contacts with the guiding bevel or guiding curve 132 to press the brake shoe stopper 13 inwards to make it retract into the mounting groove 121, thereby ensuring that the brake shoe 2 can be pushed in place smoothly.

More specifically, for example, as shown in fig. 1, the brake shoe stopper 13 is a right-angle sector plate, one of the straight sides of the right-angle sector plate is provided with a limiting ring protruding outwards, the limiting ring forms a limiting portion 131 (the outer diameter of the limiting ring is larger than the aperture of the through hole 122), and the arc-shaped surface of the right-angle sector plate forms a guiding curved surface 132. After the brake shoe stop 13 is installed, when the brake shoe 2 is not installed, the brake shoe stop 13 extends outwards under the action of the elastic reset piece 14, and the limiting ring is abutted against the wall of the installation groove 121 for limiting at the moment, so that the brake shoe stop 13 is prevented from being separated from the installation groove 121; the arc surface of the right-angle sector plate is arranged towards the direction of the notch of the mounting groove 121, and the other right-angle side surface of the right-angle sector plate is arranged towards the side surface of the brake shoe support body 11; after the shoe 2 is mounted in place, the other right-angled side can abut against the shoe 2 to lock the shoe 2. Of course, other shapes for brake shoe stop 13 are possible as desired, so long as it facilitates pushing in of brake shoe 2 and locking of brake shoe 2.

The shapes of the brake shoe support body 11, the bulge 12, the mounting groove 121 and the through hole 122 can be determined according to requirements, for example, the brake shoe support body 11 in the embodiment is a rectangular plate body, and the back of the rectangular plate body is provided with a connecting seat 111 vertically connected with the rectangular plate body so as to be connected with other parts of the tread cleaning device; the bulge 12 is of a cuboid structure and is formed on the side surface of the rectangular plate body; the mounting groove 121 is a square groove, and the through hole 122 is a rectangular hole.

In practical application, in order to facilitate processing and installation and save space, the elastic reset piece 14 is a torsion spring, and two support legs of the torsion spring are respectively arranged on the wall of the mounting groove 121 and the brake shoe stop 13.

It can be understood that as shown in fig. 1, a mounting hole 123 and a slot 133 are respectively opened on the wall of the mounting groove 121 and the shoe stopper 13, and two legs of the torsion spring are bent and inserted into the mounting hole 123 and the slot 133 respectively. During installation, the torsion spring is installed through the notch of the installation groove 121, and then the two support legs are connected with the groove wall of the installation groove 121 and the brake shoe stop block 13. Generally, the protrusion 12 is further provided with a fabrication hole 124 communicated with the mounting groove 121, so that when the torsion spring fails and needs to be replaced, the torsion spring can be assembled and disassembled by using a relevant tool through the fabrication hole 124.

Further, as shown in fig. 1 to 9, the present embodiment also provides a brake shoe fixing mechanism, which comprises a brake shoe 2 and the brake head 1, wherein the brake shoe 2 comprises a brake shoe body 21 and a mounting bracket 22, the mounting bracket 22 is arranged on the back of the brake shoe body 21 and forms an accommodating cavity 23 with an opening on at least one side with the back of the brake shoe body 21, two spigots 224 are arranged on the mounting bracket 22 and on the opposite sides of the opening, and the spigots 224 are communicated with the accommodating cavity 23. The brake shoe carrier 11 can be inserted into the receiving cavity 23, the two protrusions 12 can respectively penetrate through the two sockets 224, and the brake shoe stopper 13 can extend out and be clamped on the mounting frame 22 between the two sockets 224.

Specifically, for the situation that the brake shoe installation interface on the market is of a plurality of types, the brake shoe 2 shown in fig. 6 can be completely integrated, and then the brake shoe 2 is locked by matching with the brake head 1, so that the brake shoe 2 can be conveniently and integrally purchased, exchanged and installed.

When the brake shoe 2 is installed, the mounting frame 22 on the back of the brake shoe 2 is pushed in from the side part of the brake shoe support body 11, so that the mounting frame 22 is sleeved on the brake shoe support body 11, and the two bulges 12 respectively penetrate out of the two sockets 224; during the pushing process, brake shoe stopper 13 retracts into protrusion 12, and when brake shoe 2 is pushed to the bottom, the part of mounting bracket 22 between two sockets 224 abuts against the side of brake shoe support 11, and brake shoe stopper 13 is automatically ejected and clamped on mounting bracket 22 between two sockets 224 under the action of elastic force of elastic restoring piece 14, so as to lock brake shoe 2. Brake shoe 2 is removed by manually pressing brake shoe stop 13 back into boss 12 and then pulling brake shoe 2 out of the side of brake shoe carrier 11, as opposed to being installed.

From this, whole brake shoe fixed establishment utilizes brake shoe dog 13 and elasticity on the brake head 1 to reset the cooperation of piece 14, and simple structure is more convenient to brake shoe 2 installation and dismantlement, need not operate with other instruments, and dismouting efficiency is higher. Meanwhile, the double-insurance anti-falling design is realized, and when one elastic resetting piece 14 fails, the elastic resetting piece 14 on the other side can completely meet the requirements of fixing the brake shoe 2 and playing the anti-falling role, so that the locking is more reliable.

Further, as shown in fig. 6 and 7, for convenience of manufacture and installation, the mounting bracket 22 includes a U-shaped bracket body surrounded by two side plates 221 and a back plate 222, the two side plates 221 are connected to the back surface of the brake shoe body 21, a middle plate 223 is connected between the back plate 222 and the brake shoe body 21, two insertion openings 224 are formed by the two sides of the middle plate 223 and the space between the two side plates 221, and the brake shoe stopper 13 can be extended and clamped on the middle plate 223.

It can be understood that the front face of the brake shoe body 21 has an arc-shaped face that can match the tread of the wheel; the back plate 222 is parallel to the back surface of the brake shoe main body 21, the middle plate 223 is positioned at the opposite side of the opening, and the middle plate 223 can be provided with a through hole as required to reduce the weight; the backing plate 222, the two side plates 221 and the middle plate 223 enclose the receiving cavity 23 with the back of the brake shoe body 21. An avoidance port 2221 is generally formed in the back plate 222, and the avoidance port 2221 is communicated with one side of the back plate 222 close to the opening and is communicated with the opening; when the brake shoe 2 is pushed in from the side of the brake head 1, the connecting seat 111 on the brake head 1 is inserted into the avoiding opening 2221 to avoid interference.

When the brake shoe 2 is installed, the brake shoe 2 is directly pushed, and the torsional spring force of the brake shoe stop 13 is overcome by the pressure of the middle plate 223 in the installation frame 22, so that the brake shoe stop 13 is pressed into the installation groove 121; when the brake shoe 2 is pushed to the bottom from the side, the brake shoe support body 11 is accommodated in the accommodating cavity 23, the inner surface of the middle plate 223 abuts against the side part of the brake shoe support body 11, and the brake shoe stop 13 automatically pops up under the action of the spring torsion of the torsion spring and is clamped on the outer surface of the middle plate 223 to limit the brake shoe 2 to be released. When brake shoe 2 is to be removed, brake shoe stop 13 is manually compressed and brake shoe 2 is then pulled out sideways.

In summary, the brake head 1 and the brake shoe fixing mechanism in the embodiment have the following advantages:

(1) the brake shoe holder 1 and the brake shoe fixing mechanism in the embodiment are mainly applied to a rail vehicle wheel tread cleaning device, the brake shoe 2 is convenient to mount and dismount, a tool is not needed for operation, and the brake shoe 2 is pushed into the device from the side by force during mounting; when the brake shoe 2 is disassembled, the brake shoe stop 13 is directly pressed by hands, and the brake shoe 2 is withdrawn.

(2) Utilize two torsional springs and two brake head chock 13 locking structures, through the fixed brake shoe 2 of upper and lower double chock structure of 1 lateral part of brake head, can realize two side locking to brake shoe 2, realize the design of dual fail-safe anticreep, after fracture appears in a torsional spring, the opposite side torsional spring also satisfies fixed brake shoe 2 completely and plays the anticreep effect, locks more reliably.

The above are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.