Hydraulic failure protection brake

Abstract

The utility model relates to the technical field of brakes, in particular to a hydraulic failure protection brake which comprises a base, a mounting seat is connected to the top of the base, clamping jaws are hinged to the two sides of the mounting seat through supporting shafts respectively, limiting assemblies are arranged at the positions, located on the supporting shafts, of the clamping jaws, and a driving mechanism is arranged on the back face of the mounting seat. Through the arrangement of the limiting assembly, when the driving mechanism fails, the electromagnet is powered off to lose magnetism, and the clamping teeth losing magnetic attraction are pushed out under the action of the tension of the spring to limit the fulcrum shaft together with the inverted teeth, so that the clamping jaw cannot rotate and loosen to keep the clamping state, and the limiting effect is conveniently achieved when the driving mechanism fails; and through the arranged disc spring, when the electromagnetic valve and the oil pump lose efficacy, the push rod connected with the piston is conveniently pushed out through the tension of the disc spring, so that the clamping state of the clamping plate is maintained, braking is conducted, and the protection effect is achieved when hydraulic pressure loses efficacy.

Description

Technical Field

[0001] The utility model relates to the technical field of brakes, in particular to a hydraulic failure protection brake. Background Art

[0002] The brake is a device that has the function of slowing down, stopping or keeping the moving parts (or moving machinery) stopped. It is a mechanical part that stops or slows down the moving parts in the machinery. Commonly known as brakes or gates. The brake is mainly composed of a frame, brake parts and operating devices. Some brakes are also equipped with automatic adjustment devices for the clearance of brake parts. In order to reduce the braking torque and structural size, the brake is usually installed on the high-speed shaft of the equipment.

[0003] Prior art, such as publication number CN210885087U, provides a hydraulic failure protection brake, wherein the output component is composed of a fixed shaft and a transmission disc, and a plurality of brake grooves distributed in an annular shape are arranged on the side walls on both sides of the transmission disc, and a connecting plate is fixedly connected to the fixed shaft, and cylindrical blocks are fixedly connected to the upper and lower ends of the connecting plate, and a cylindrical mounting groove is provided in the cylindrical block, and a brake mechanism is fixedly connected to the bottom of the mounting groove, and an annular block is fixedly connected to the outer wall of the mounting groove, and a pneumatic mechanism is arranged in the annular block. The utility model is directly pneumatically connected to the hydraulic actuator (hydraulic cylinder) through a pneumatic interface, and the air pressure is directly applied to the piston through an annular through hole and an air guide pipe. When the hydraulic pressure fails, the annular block is driven to move by the action of the second spring, and the transmission disc is decelerated and braked under the action of the brake groove and the contact strip, and the transmission disc is quickly protected by emergency braking in the first time.

[0004] In the scheme, the pneumatic interface is directly connected to the hydraulic actuator (hydraulic cylinder), and the air pressure is directly applied to the piston through the annular through hole and the air guide pipe. When the hydraulic pressure fails, the piston has no air pressure at the first time, and the annular block is driven to move by the second spring, and the transmission disc is decelerated and braked under the action of the brake groove and the friction strip, and the transmission disc is quickly protected by emergency braking at the first time. However, due to the limited telescopic length of the second spring tension, the closer the spring is to the relaxed state, the smaller the thrust generated by its tension will be, and it is easy to be affected by pressure rebound, resulting in general braking effect. In view of this, we propose a hydraulic failure protection brake. Utility Model Content

[0005] The utility model aims to provide a hydraulic failure protection brake, which solves the problem that the brake is easily rebounded when squeezed by using the tension of the spring as support for braking, resulting in a general braking effect.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A hydraulic failure protection brake comprises a base, a mounting seat is connected to the top of the base, and clamping jaws are respectively hinged on both sides of the mounting seat through a support shaft, a limiting assembly is arranged at the position of the clamping jaw at the support shaft, and a driving mechanism is arranged on the back of the mounting seat, and the limiting assembly consists of a round block, a round ring, an electromagnet, a slide groove, a spring, a clamping tooth, and a reverse tooth. The round ring is connected to the position of the top of the clamping jaw outside the support shaft, the reverse tooth is connected to the inner wall of the round ring, the round block is connected to the top of the support shaft, the electromagnet is connected to the inner wall of the round block, the slide groove is opened on the outer wall of the round block, the clamping tooth is slidably connected to the inner wall of the slide groove, and the spring is connected to the position between the electromagnet and the clamping tooth. By setting the limiting assembly, when the driving mechanism fails, the electromagnet is powered off and loses its magnetism, and the clamping tooth that loses its magnetic attraction is pushed out under the action of spring tension to form a limit with the reverse tooth on the support shaft, so that the clamping jaw cannot be rotated and released to maintain the clamped state, so as to facilitate the limiting effect when the driving mechanism fails and avoid the rebound caused by extrusion.

[0008] Preferably, the side corresponding to the inverted tooth and the latch tooth are both arranged with an arc surface, and when the clamping jaws are close to each other, the arc surface of the inverted tooth and the latch tooth correspond to each other, and when the electromagnet is powered off and loses its magnetism, the latch tooth is pushed out under the action of the spring tension, so that the clamping jaw can only rotate in the clamping direction but not in the releasing direction.

[0009] Preferably, the driving mechanism includes an oil tank, a hydraulic rod, and an oil pipe. The oil tank is connected to the top of the mounting seat, the hydraulic rod is connected to the back of the mounting seat, and both ends of the hydraulic rod are respectively hinged to the clamping claws at corresponding positions, and the oil pipe is used to connect the oil tank and the hydraulic rod.

[0010] Preferably, an oil pump is connected to the inside of the oil tank, and the output end of the oil pump is connected to the oil pipe. The outer wall of the oil pipe is connected to a solenoid valve. The oil pump injects liquid into the hydraulic rod through the oil pipe, so that the hydraulic rod extends and pushes the clamp to clamp. The solenoid valve is started to close the oil pipe to maintain the pressure of the hydraulic rod and maintain the clamping state.

[0011] Preferably, the hydraulic rod consists of a cylinder, a piston, a push rod, and a disc spring. The inner wall of the cylinder is slidably connected to the piston, and the push rod is connected to one side of the piston and extends to the outer wall of the cylinder.

[0012] Preferably, the disc spring is arranged inside the cylinder, and the two ends of the disc spring are respectively connected to the piston and the inner wall of the cylinder. The disc spring is arranged so that when the solenoid valve and the oil pump fail, the push rod connected to the piston can be pushed out by the tension of the disc spring to maintain the clamping state of the clamping plate for braking, thereby playing a protective role in the event of hydraulic failure.

[0013] Preferably, a clamping plate is hinged on one side corresponding to the front side of the clamping jaw, and the clamping plate is connected in a hinged manner to adapt to the change of angle when the clamping jaw is clamping.

[0014] By means of the above technical solution, the utility model provides a hydraulic failure protection brake, which has at least the following beneficial effects:

[0015] 1. The utility model provides a disc spring so that when the solenoid valve and the oil pump fail, the push rod connected to the piston can be pushed out by the tension of the disc spring to maintain the clamping state of the clamping plate for braking, thereby playing a protective role when the hydraulic pressure fails.

[0016] 2. The utility model sets a limit assembly. When the driving mechanism fails, the electromagnet is powered off and loses its magnetism. The clamping teeth that lose magnetic attraction are pushed out under the action of spring tension to form a limit with the inverted teeth on the support shaft, so that the clamping claws cannot rotate and loosen, so as to maintain the clamped state, so as to facilitate the limit effect when the driving mechanism fails and avoid rebound due to squeezing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the driving mechanism in the utility model;

[0020] Figure 3 It is a partial cross-sectional view of the hydraulic rod in the utility model;

[0021] Figure 4 It is a partial cross-sectional view of the limiting component in the utility model.

[0022] In the figure: 1. base; 2. clamping claw; 3. clamping plate; 4. mounting seat; 5. driving mechanism; 51. oil tank; 52. hydraulic rod; 521. cylinder; 522. piston; 523. push rod; 524. disc spring; 53. oil pipe; 54. solenoid valve; 6. limit assembly; 60. round block; 61. ring; 62. electromagnet; 63. slide groove; 64. spring; 65. latch tooth; 66. inverted tooth. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0024] A hydraulic fail-safe brake, such as Figure 1 - Figure 4 As shown, it includes a base 1, a mounting seat 4 is connected to the top of the base 1, and clamping jaws 2 are respectively hinged on both sides of the mounting seat 4 through a support shaft. A limit assembly 6 is arranged at the position of the clamping jaw 2 at the support shaft, and a driving mechanism 5 is arranged on the back of the mounting seat 4. The limit assembly 6 consists of a round block 60, a ring 61, an electromagnet 62, a slide groove 63, a spring 64, a latch tooth 65, and a reverse tooth 66. The ring 61 is connected to the top of the clamping jaw 2 at a position outside the support shaft, and the reverse tooth 66 is connected to the inner wall of the ring 61. The round block 60 is connected to the top of the support shaft. The electromagnet 62 is connected to the inner wall of the round block 60, the slide groove 63 is opened on the outer wall of the round block 60, the latch tooth 65 is slidably connected to the inner wall of the slide groove 63, and the spring 64 is connected to the position between the electromagnet 62 and the latch tooth 65. By setting the limit assembly 6, when the driving mechanism 5 fails, the electromagnet 62 is powered off and loses its magnetism, and the latch tooth 65 that loses its magnetic attraction is pushed out under the action of the tension of the spring 64 to form a limit with the inverted tooth 66 on the support shaft, so that the clamping jaw 2 cannot be rotated and released to maintain the clamped state, so as to facilitate the failure of the driving mechanism 5. The inverted teeth 66 and the latch teeth 65 are both arranged on an arc surface when the clamping jaws 2 are close to each other. When the electromagnet 62 is powered off and loses its magnetism, the latch teeth 65 are pushed out under the tension of the spring 64, so that the clamping jaws 2 can only rotate in the clamping direction, and cannot rotate in the releasing direction. The driving mechanism 5 includes an oil tank 51, a hydraulic rod 52, and an oil pipe 53. The oil tank 51 is connected to the top of the mounting seat 4, and the hydraulic rod 52 is connected to the top of the mounting seat 4. It is connected to the back side of the mounting base 4, and the two ends of the hydraulic rod 52 are respectively hinged with the clamping jaws 2 at the corresponding positions. The oil pipe 53 is used to connect the oil tank 51 and the hydraulic rod 52. The inside of the oil tank 51 is connected with an oil pump, and the output end of the oil pump is connected to the oil pipe 53. The outer wall of the oil pipe 53 is connected with a solenoid valve 54. The oil pump injects liquid into the hydraulic rod 52 through the oil pipe 53, so that the hydraulic rod 52 extends out. The hydraulic rod 52 pushes the clamping jaw 2 for clamping. The oil pipe 53 is closed by starting the solenoid valve 54 to maintain the pressure of the hydraulic rod 52 and maintain the clamping state.

[0025] In this embodiment, the oil pump injects liquid into the hydraulic rod 52 through the oil pipe 53, so that the hydraulic rod 52 extends out and pushes the clamping claw 2 to clamp. The oil pipe 53 is closed by starting the solenoid valve 54 to maintain the pressure of the hydraulic rod 52 and maintain the clamping state. By setting the limit component 6, when the driving mechanism 5 fails, the electromagnet 62 is powered off and loses its magnetism. The locking tooth 65 that loses its magnetic attraction is pushed out under the tension of the spring 64 to form a limit on the support shaft with the inverted tooth 66, so that the clamping claw 2 cannot be rotated to loosen, so as to maintain the clamping state, so as to facilitate the limiting effect when the driving mechanism 5 fails and avoid rebound due to squeezing. Example

[0026] like Figure 3 As shown, the hydraulic rod 52 consists of a cylinder 521, a piston 522, a push rod 523, and a disc spring 524. The inner wall of the cylinder 521 is slidably connected to the piston 522. The push rod 523 is connected to one side of the piston 522 and extends to the outer wall of the cylinder 521. The disc spring 524 is arranged inside the cylinder 521. The two ends of the disc spring 524 are respectively connected to the piston 522 and the inner wall of the cylinder 521. The disc spring 524 is arranged so that when the solenoid valve 54 and the oil pump fail, the push rod 523 connected to the piston 522 can be pushed out by the tension of the disc spring 524 to maintain the clamping state of the clamping plate 3 for braking, which plays a protective role in the event of hydraulic failure. The side corresponding to the front of the clamping jaw 2 is hinged with the clamping plate 3, and the clamping plate 3 is connected in a hinged manner to adapt to the change in angle when the clamping jaw 2 is clamped.

[0027] In this embodiment, a disc spring 524 is provided to facilitate pushing out the push rod 523 connected to the piston 522 through the tension of the disc spring 524 when the solenoid valve 54 and the oil pump fail, so as to maintain the clamping state of the clamping plate 3 for braking, thereby playing a protective role in the event of hydraulic failure.

[0028] When a hydraulic failure protection brake of the utility model is in use, the oil pump injects liquid into the hydraulic rod 52 through the oil pipe 53, so that the hydraulic rod 52 extends out. The hydraulic rod 52 pushes the clamping claw 2 to clamp. The oil pipe 53 is closed by starting the electromagnetic valve 54 to maintain the pressure of the hydraulic rod 52 and maintain the clamping state. When the driving mechanism 5 fails, the disc spring 524 is set to facilitate the push rod 523 connected to the piston 522 to be pushed out by the tension of the disc spring 524 when the electromagnetic valve 54 and the oil pump fail, so as to maintain the clamping state of the clamping plate 3 for braking. At this time, the electromagnet 62 is powered off and loses its magnetism. The locking tooth 65 that loses its magnetic attraction is pushed out under the action of the tension of the spring 64 to form a limit to the support shaft with the inverted tooth 66, so that the clamping claw 2 cannot be rotated to loosen, so as to maintain the clamping state, so as to facilitate the limit effect when the driving mechanism 5 fails and avoid rebound due to extrusion.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic fail-safe brake, comprising a base (1), characterized in that: The top of the base (1) is connected to a mounting seat (4), and the two sides of the mounting seat (4) are respectively hinged with clamping claws (2) through a support shaft, and the clamping claws (2) are provided with a limit assembly (6) at the position of the support shaft, and the back of the mounting seat (4) is provided with a driving mechanism (5), and the limit assembly (6) is composed of a round block (60), a round ring (61), an electromagnet (62), a slide groove (63), a spring (64), a latching tooth (65), and a reverse tooth (66), and the round ring (61) is connected to the top of the clamping jaw (2) at a position outside the support shaft, the inverted tooth (66) is connected to the inner wall of the ring (61), the round block (60) is connected to the top of the support shaft, the electromagnet (62) is connected to the inner wall of the round block (60), the slide groove (63) is opened on the outer wall of the round block (60), the latch tooth (65) is slidably connected to the inner wall of the slide groove (63), and the spring (64) is connected to the position between the electromagnet (62) and the latch tooth (65).

2. A hydraulic fail-safe brake according to claim 1, characterized in that: The sides corresponding to the inverted teeth (66) and the latching teeth (65) are both provided with arc surfaces, and when the clamping jaws (2) are brought closer to each other, the arc surfaces of the inverted teeth (66) and the latching teeth (65) correspond to each other.

3. A hydraulic fail-safe brake according to claim 1, characterized in that: The driving mechanism (5) comprises an oil tank (51), a hydraulic rod (52), and an oil pipe (53); the oil tank (51) is connected to the top of the mounting seat (4); the hydraulic rod (52) is connected to the back of the mounting seat (4); and both ends of the hydraulic rod (52) are respectively hinged to the clamping claws (2) at corresponding positions; the oil pipe (53) is used to connect the oil tank (51) and the hydraulic rod (52).

4. A hydraulic fail-safe brake according to claim 3, characterized in that: An oil pump is connected to the interior of the oil tank (51), and an output end of the oil pump is connected to an oil pipe (53), and an outer wall of the oil pipe (53) is connected to a solenoid valve (54).

5. A hydraulic fail-safe brake according to claim 3, characterized in that: The hydraulic rod (52) comprises a cylinder (521), a piston (522), a push rod (523), and a disc spring (524); the inner wall of the cylinder (521) is slidably connected to the piston (522); the push rod (523) is connected to one side of the piston (522) and extends to the outer wall of the cylinder (521).

6. A hydraulic fail-safe brake according to claim 5, characterized in that: The disc spring (524) is arranged inside the cylinder (521), and two ends of the disc spring (524) are respectively connected to the piston (522) and the inner wall of the cylinder (521).

7. A hydraulic fail-safe brake according to claim 1, characterized in that: A clamping plate (3) is hingedly connected to one side corresponding to the front side of the clamping jaw (2).

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