Pneumatic holding brake device

Abstract

The utility model provides a pneumatic clasping brake device which comprises two supporting plates and further comprises two air cylinders which are connected between the two supporting plates and arranged side by side, and a movable cavity is formed between the two air cylinders and the two supporting plates. Two brake blocks are arranged in the movable cavity in parallel; a plurality of elastic pieces are arranged between the two brake blocks, and a holding cavity allowing a rotating piece to penetrate through is formed between the two brake blocks. A sealed air chamber is arranged between the air cylinder and the brake blocks, an air inlet communicated with the air chamber is formed in the air cylinder, and the air cylinder and the sealed air chamber are arranged, so that the two brake blocks are pushed to overcome the elastic force of the elastic piece to be close to each other through injection of external air pressure, and the rotating piece arranged in the holding cavity is held tightly to achieve braking. And in a normal state, the brake blocks are far away from each other under the action of the elastic piece and do not interfere with the rotation of the rotating piece. The braking device is simple in overall structure, long in service life, large in braking torque, capable of being controlled remotely and free of maintenance.

Description

TECHNICAL FIELD

[0001] The utility model relates to brake device technical field, specifically, relate to a pneumatic embrace tightly brake device. BACKGROUND

[0002] The brake device is used for realizing the quick braking when the equipment is overhauled or emergency stop. The current brake device includes manual brake device and automatic brake device. However, for some large fan blade type equipment, the manual brake device needs human intervention when operating, and the operation requirement is also high. If the operation is wrong and a certain force is not applied, the embracing device will slip and fail, which is not safe, has high hidden danger, and has high operation requirement. At the same time, the artificial operation is also not safe when emergency stop. For the existing electromagnetic safety clutch on the market, the electromagnetic induction principle and friction force are used to control mechanical transmission to realize the function of braking. However, the structure is relatively complex, the failure rate is high, the size needs to be large for large torque occasions, and regular maintenance is needed to ensure its performance and service life, especially in high temperature or high load working conditions, so the cost is high. SUMMARY

[0003] Therefore, the utility model aims at providing a pneumatic embrace tightly brake device to solve the above problems.

[0004] The utility model adopts the following scheme:

[0005] The utility model provides a pneumatic embrace tightly brake device, which comprises two supporting plates, two air cylinders connected between the two supporting plates and arranged side by side, an active cavity formed between the two supporting plates and the two air cylinders, two brake blocks arranged side by side in the active cavity, a plurality of elastic members arranged between the two brake blocks, a embracing cavity for a rotating member arranged between the two brake blocks, a sealed air chamber arranged between the air cylinder and the brake block, and an air inlet arranged on the air cylinder and communicating with the air chamber.

[0006] Under normal conditions, the two brake blocks are away from each other under the action of the elastic members. When braking, external air pressure enters the air chamber through the air inlet, and then pushes the two brake blocks to approach each other to embrace the rotating member in the embracing cavity by overcoming the elastic force of the elastic members.

[0007] Further, a friction plate is arranged on the embracing cavity.

[0008] Further, a throttle valve is arranged on the air inlet.

[0009] Further, two pistons are further included; the cylinder is arranged on one side of the movable cavity and is provided with a sliding groove, and a piston abutting against the brake block is movably arranged in the sliding groove; and the piston and the sliding groove form the sealed air chamber.

[0010] Further, the air inlet is arranged along the moving direction of the piston and is arranged at the center of the piston; and the end face of the piston arranged on one side of the air inlet is provided with a groove, and the groove is recessed and arranged outwardly along the air inlet.

[0011] Further, a plurality of sealing rings are arranged on the upper side wall of the piston and form side sliding seals with the side wall of the sliding groove.

[0012] Further, the brake block is in the shape of an arch bridge, and a plurality of elastic members are arranged in parallel between the two side bottom support portions of the two brake blocks; and the piston has a recessed circular arc abutting surface which is adapted to abut against the arch bridge surface of the brake block.

[0013] Further, a limiting member is arranged between the piston and the brake block along the moving direction.

[0014] Further, a protective cover is further included and is detachably arranged on the cylinder and is used for covering one port of the holding cavity.

[0015] Further, a base is further included; the base is provided with a waist-shaped groove and is connected with the support plate through bolts, so that the connecting height of the support plate can be adjusted.

[0016] By adopting the above technical scheme, the following technical effects can be achieved.

[0017] The utility model provides a kind of pneumatic holding brake device, it is through the setting of cylinder and sealed air chamber, by the injection of external air pressure, two brake blocks are pushed to overcome the elastic force of elastic member and mutually close, to hold the rotating member in the holding cavity and realize brake;And in normal state, brake block is mutually far away under the action of elastic member, without interfering the rotation of rotating member.It is simple in overall structure, long in life, large in braking torque, can be remotely controlled, and does not need to be maintained. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced to the drawings needed to be used in the embodiments, it should be understood that the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for ordinary skilled person in the art, under the premise of not paying creative labor, other related drawings can also be obtained according to these drawings.

[0019] Figure 1This is a partial cross-sectional view of the side of a pneumatic clamping brake device according to an embodiment of the present invention;

[0020] Figure 2 This is a front cross-sectional view of a pneumatic clamping brake device according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the front structure of the protective cover of a pneumatic clamping brake device according to an embodiment of the present invention;

[0022] Figure 4 This is a side view of the protective cover structure of a pneumatic clamping brake device according to an embodiment of the present invention;

[0023] Icons: Support plate 1, Lower cylinder 2, Upper cylinder 3, Movable chamber 4, Upper brake block 5, Lower brake block 6, Upper piston 7, Lower piston 8, Sealing ring 9, Air chamber 10, First air inlet 11, Second air inlet 12, Elastic element 13, Friction plate 14, Limiting element 15, Groove 16, Protective cover 17, Base 18, Waist-shaped groove 19. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] Example

[0026] Combination Figures 1 to 4 As shown, this embodiment provides a pneumatic clamping brake device, including two support plates 1, and two cylinders arranged in parallel between the two support plates 1, forming a movable cavity 4 between the cylinders and the two support plates 1; two brake blocks are arranged in parallel within the movable cavity 4; a plurality of elastic elements 13 are arranged between the two brake blocks, and a clamping cavity for a rotating element to pass through is provided between the two brake blocks; a sealed air chamber 10 is provided between the cylinders and the brake blocks, and an air inlet communicating with the air chamber 10 is provided on the cylinders;

[0027] In normal state, the two brake blocks are away from each other under the action of the elastic member 13; when braking, external air pressure enters the air chamber 10 through the air inlet, and then pushes the two brake blocks to approach each other to tightly hold the rotating member in the holding cavity.

[0028] In this embodiment, as shown in Figure 1 and Figure 2 , it comprises a lower air cylinder 2 connected below the two support plates 1 and an upper air cylinder 3 connected above the two support plates 1. In this embodiment, the lower air cylinder 2 is connected to the support plate 1 by a positioning pin; the upper air cylinder 3 is connected to the support plate 1 by a bolt. The upper air cylinder 3, the lower air cylinder 2 and the two support plates 1 form the movable cavity 4; the movable cavity 4 is provided with an upper brake block 5 and a lower brake block 6 which can move up and down. The upper brake block 5 and the upper air cylinder 3 are provided with an upper piston 7; the lower brake block 6 and the lower air cylinder 2 are provided with a lower piston 8; the upper air cylinder 3 and the lower air cylinder 2 are provided with a sliding groove on one side of the movable cavity 4; the upper piston 7 and the lower piston 8 can move up and down in the sliding groove; the upper end side of the upper piston 7 is provided with a plurality of sealing rings 9, and the lower end side of the lower piston 8 is also provided with a plurality of sealing rings 9 to form a sliding seal with the sliding groove. The air chamber 10 is formed between the piston and the sliding groove, and the upper air cylinder 3 and the lower air cylinder 2 are respectively provided with a first air inlet 11 and a second air inlet 12 which communicate with the air chamber 10. The first air inlet 11 and the second air inlet 12 are connected to an external air pump by a pipeline and are controlled by a solenoid valve to realize remote control.

[0029] In this embodiment, the brake block is in the shape of an arch bridge, and a plurality of placing grooves are arranged side by side between the two side bottom support parts of the upper brake block 5 and the lower brake block 6, and the elastic member 13 is arranged on the placing grooves; the elastic member 13 is a compression spring, and the upper brake block 5 and the lower brake block 6 are away from each other under the action of the elastic force of the compression spring in the normal state. The middle part of the upper brake block 5 and the lower brake block 6 has an inner groove 16, which is oppositely arranged to form the holding cavity; when external air pressure enters the air chamber 10 through the air inlet, it pushes the two brake blocks to approach each other to overcome the elastic force of the compression spring, so as to tightly hold the rotating member in the holding cavity.

[0030] In this embodiment, the upper piston 7 and the lower piston 8 have a concave circular arc abutting surface which abuts and fits with the arch bridge surface of the brake block, so as to increase the contact surface of the piston and the brake block, so that the piston can more uniformly push the brake block to move. The inner groove 16 is provided with a friction plate 14 to increase the friction force with the rotating member.

[0031] In the embodiment, the limit members 15 are arranged between the upper piston 7 and the upper block 5 and between the lower piston 8 and the lower block 6 along the moving direction, so that the pistons can accurately push the blocks and avoid deviation and uneven force.

[0032] The protective cover 17 is detachably arranged on the cylinder and covers one port of the holding cavity to prevent dust from entering.

[0033] The utility model discloses a kind of pneumatic holding brake devices, which is provided with cylinder and closed air chamber 10, and two blocks are pushed to overcome the elastic force of elastic member 13 to each other by the injection of external air pressure, to hold the rotating member in the holding cavity to realize brake;And in normal state, block is far from each other under the action of elastic member 13, without interfering the rotation of rotating member.Its overall structure is simple, long in life, large in braking torque, can be remotely controlled, and does not need to be maintained;At the same time, cylinder can realize automatic compensation after friction plate 14 wears.

[0034] The above is only preferred embodiment of the utility model, and the protection scope of the utility model is not limited to the above-mentioned embodiment.

[0035] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0036] In addition, the terms "first", "second", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0037] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] In the present application, unless otherwise specifically defined and limited, the "first" feature is "on" or "below" the "second" feature, which can include the first and second features in direct contact, or the first and second features not in direct contact but in contact through another feature between them. Moreover, the "first" feature "above", "above" and "above" the "second" feature includes the "first" feature directly above and obliquely above the "second" feature, or only indicates that the "first" feature is higher than the "second" feature in horizontal height. The "first" feature "below", "below" and "below" the "second" feature includes the "first" feature directly below and obliquely below the "second" feature, or only indicates that the "first" feature is lower than the "second" feature in horizontal height.

Claims

1. A pneumatic holding brake device comprising two support plates, characterized in that, Two cylinders are arranged between the two support plates and form a movable cavity with the two support plates; two blocks are arranged in the movable cavity; a plurality of elastic members are arranged between the two blocks, and a holding cavity is arranged between the two blocks for a rotating member; a sealed air chamber is arranged between the cylinder and the block, and an air inlet is arranged on the cylinder and communicates with the air chamber; In a normal state, the two blocks are away from each other under the action of the elastic members; when braking, external air pressure enters the air chamber through the air inlet, and then pushes the two blocks to overcome the elastic force of the elastic members to approach each other to hold the rotating member in the holding cavity.

2. The pneumatic band brake device according to claim 1, characterized in that A friction plate is arranged on the holding cavity.

3. The pneumatic band brake device according to claim 1, characterized in that A throttle valve is further arranged on the air inlet.

4. The pneumatic band brake device according to claim 1, wherein Two pistons are further included; a sliding groove is arranged on one side of the cylinder in the movable cavity, and a piston abutting against the block is movably arranged in the sliding groove; the piston and the sliding groove form a sealed air chamber.

5. The pneumatic embrace brake device according to claim 4, characterized in that The air inlet is arranged along the moving direction of the piston and is arranged at the center of the piston; the end face of the piston on one side of the air inlet is provided with a groove, and the groove is recessed and arranged outward along the air inlet.

6. The pneumatic embrace brake device according to claim 4, characterized in that A plurality of sealing rings are arranged on the upper side wall of the piston to form a side sliding seal with the side wall of the sliding groove.

7. The pneumatic embrace brake device according to claim 4, characterized in that The block is in the shape of an arch bridge, and a plurality of elastic members are arranged between the two side bottom support portions of the two blocks; the piston has a recessed circular arc abutting surface adapted to the arch bridge surface of the block.

8. The pneumatic embrace brake device according to any one of claims 4-7, characterized in that Limiting members are arranged between the piston and the block along the moving direction.

9. The pneumatic embrace brake device according to claim 7, characterized in that A protective cover is further included and is detachably arranged on the cylinder to cover one port of the holding cavity.

10. The pneumatic band brake device of claim 7, wherein, A base is further included; a waist-shaped groove is arranged on the base, and the support plate is connected by bolts to adjust the connection height of the support plate.

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