CN210533594U - Brake shoe type brake capable of detecting moment - Google Patents
Brake shoe type brake capable of detecting moment Download PDFInfo
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- CN210533594U CN210533594U CN201921599774.5U CN201921599774U CN210533594U CN 210533594 U CN210533594 U CN 210533594U CN 201921599774 U CN201921599774 U CN 201921599774U CN 210533594 U CN210533594 U CN 210533594U
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Abstract
The utility model provides a brake shoe formula stopper of detectable moment belongs to hoist stopper technical field, include: a base; the number of the brake arms is two, and the lower ends of the two brake arms are respectively hinged to the two ends of the base; the number of the brake shoes is two, the two brake shoes are respectively arranged on the two brake arms, and the brake shoes are used for tightly holding the brake wheel; and the pin shaft type pressure sensor penetrates through the brake shoe and the brake arm so as to connect the brake shoe and the brake arm, and is used for sensing the acting force applied to the brake shoe. The utility model has the advantages that: the moment of the brake can be detected in time, and safety accidents caused by insufficient braking moment are avoided.
Description
Technical Field
The utility model belongs to the technical field of the hoist stopper, a brake shoe formula stopper of detectable moment is related to.
Background
The brake is a component on a crane, is generally used for braking and stopping equipment, and is a mechanical part for stopping or decelerating moving parts in a machine, and the working principle of the brake is as follows: when the mechanism is powered off and stops working, the driving device of the brake, namely the pusher, is powered off and stops driving (thrust force is eliminated) at the same time, and the force of the brake spring is transmitted to the brake shoe through the brake arms at the two sides, so that the brake facing surface generates specified pressure, and a specified brake torque is established to play a role in braking; when the mechanism is powered, the pusher is also powered to drive and rapidly generate enough thrust to push the push rod, so that the brake spring is further compressed, the brake arm is expanded towards two sides, the brake cover surface of the brake shoe is separated from the brake wheel, the pressure and the brake torque of the brake cover surface are eliminated, and the braking effect is stopped.
For example, a chinese patent with application number 201620805729.0 discloses a crane brake, which includes a base, brake arms are installed on both sides of the upper portion of the base, a hydraulic electromagnet is installed on the right side of the two brake arms on the upper portion of the base, a lever is connected to the upper portion of the hydraulic electromagnet, a screw rod is connected to the left end of the lever, a spring holder with one end connected to the brake arms is arranged below the screw rod, a pull rod is sleeved on the left end of the spring holder, tiles are installed in the middle of the inner sides of the brake arms, through holes are uniformly arranged on the front sides of the tiles, brake pads are connected to the outer sides of the tiles, fixing rods are uniformly arranged on the back sides of the brake pads.
However, the brake does not have a function of detecting torque, and cannot detect the torque in real time, and the brake torque is insufficient when the brake lever is lowered to the extreme position due to abrasion of the brake pad of the brake, and the brake torque is insufficient when the brake compression spring is plastically deformed after being compressed for a long time. There is room for improvement in that serious safety accidents may occur if the inspection and maintenance are not in place or the maintenance personnel are not technically relevant.
Disclosure of Invention
The utility model aims at the above-mentioned problem that prior art exists, provide a brake shoe formula stopper of detectable moment.
The purpose of the utility model can be realized by the following technical proposal: a brake shoe brake capable of detecting torque, comprising:
a base;
the number of the brake arms is two, and the lower ends of the two brake arms are respectively hinged to two ends of the base;
the number of the brake shoes is two, the two brake shoes are respectively arranged on the two brake arms, and the brake shoes are used for tightly holding a brake wheel;
a pin pressure sensor passing through the brake shoe and the brake arm to connect the brake shoe and the brake arm, and sensing an applied force to which the brake shoe is subjected.
Preferably, the brake device further comprises a brake torque detector, wherein the brake torque detector is electrically connected with the pin shaft type pressure sensor and is used for receiving a signal of the pin shaft type pressure sensor and calculating the brake torque of the brake shoe.
Preferably, a first shaft hole is formed in the brake shoe, a second shaft hole is formed in the brake arm, and the pin shaft type pressure sensor penetrates through the first shaft hole and the second shaft hole so that the brake shoe is hinged to the brake arm.
Preferably, an alarm circuit is arranged in the braking torque detector.
Preferably, the braking torque detector is further internally provided with a control circuit, the control circuit is used for being electrically connected with the main circuit of the equipment, and the control circuit can cut off the main circuit of the equipment when the torque of the braking shoe is insufficient.
Preferably, a hydraulic push rod and a spring are arranged on the base, the spring is located between the hydraulic push rod and the brake arm, a driving arm is arranged on the hydraulic push rod, and the driving arm and the spring are both hinged to the brake arm.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the moment of the brake can be detected in time, and safety accidents caused by insufficient braking moment are avoided.
2. The braking torque detector is an existing electronic component, and can convert a specific torque according to a pressure value sent by a pin shaft type pressure sensor, and then monitor and display the specific torque in real time through a display screen.
Drawings
Fig. 1 is a schematic structural diagram of a shoe brake according to the present invention.
Fig. 2 is a schematic view of the connection relationship between the brake shoe and the pin shaft type pressure sensor of the present invention.
In the figure, 100, the base; 200. a brake arm; 300. a brake shoe; 400. a pin-type pressure sensor; 500. a brake torque detector; 600. a hydraulic push rod; 700. a spring.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1 and 2, a brake shoe brake capable of detecting a torque includes: the brake shoe type brake comprises a base 100, a brake arm 200, a brake shoe 300 and a pin shaft type pressure sensor 400, and can detect the moment in real time, so that the brake moment is ensured to be above a set value.
It should be noted here that the brake is a component on a crane, and is generally used for braking and stopping equipment, and the working principle is that the brake arm 200 drives the brake shoe 300 to embrace the brake wheel, so that the equipment can stop working once the brake wheel is embraced, and when the brake shoe 300 embraces the brake wheel, sufficient braking torque is required, and the brake wheel cannot be braked once the torque is insufficient; in the existing brake, if the brake block is abraded and the connecting parts are abraded, the compensation mechanism reaches the limit stroke, the braking torque is reduced, and the braking torque is reduced due to the fact that the braking spring is pressed for a long time.
In the practical use process, if the brake is used for a luffing mechanism in the hoisting industry, insufficient braking torque can cause a hoisted object and a large arm of the crane to slide downwards, the descending speed is faster and faster according to different heights, and once the brake descends, the situation that the large arm of the crane and a heavy object are hit to the ground, equipment or personnel together with eyes can not be prevented, so that irretrievable consequences are caused; when the brake device is used for a hoisting mechanism in the hoisting industry, the hoisted object can slide downwards if the brake torque is insufficient, the descending speed is faster and faster according to different heights, and once the hoisted object descends, the situation that the object is hit to the ground, equipment or personnel only when the object is seen cannot be prevented, so that irretrievable consequences are caused.
In order to avoid the above situation, it is necessary to detect the braking torque in real time, wherein the base 100 is the bottom of the brake and is used for installing the braking arm 200; the number of the brake arms 200 is two, and the lower ends of the two brake arms 200 are respectively hinged at two ends of the base 100.
The brake arm 200 and the base 100 are both of the existing structure, the lower end of the brake arm 200 is hinged to the base 100, the number of the brake shoes 300 is two, the two brake shoes 300 are respectively arranged on the two brake arms 200, and the brake shoes 300 are used for tightly holding brake wheels.
Preferably, the number of the brake arms 200 and the brake shoes 300 is two, the brake wheel is located between the two brake shoes 300, the brake arms 200 can drive the two brake shoes 300 to be abutted against the brake wheel and apply a certain torque, and once the torque is small, the brake wheel cannot be stopped, so that the torque of the brake shoes 300 needs to be maintained above a set value.
A pin pressure sensor 400 passing through the brake shoe 300 and the brake arm 200 to connect the brake shoe 300 and the brake arm 200, and the pin pressure sensor 400 for sensing an applied force applied to the brake shoe 300.
Preferably, the pin pressure sensor 400 is actually an existing sensor, and is actually a hollow-section circular shaft subjected to shearing force, and the double-shear type resistance strain gauge is adhered to the center of the groove in the central hole, so that the pin pressure sensor 400 can sense the magnitude of the pressure applied.
The pin hole is formed in the brake shoe 300 and the brake arm 200, and the pin shaft type pressure sensor 400 passes through the pin hole so that the brake shoe 300 is hinged to the brake arm 200, so that with this structure, the pin shaft type pressure sensor 400 can sense the torque of the brake shoe 300, and once the torque of the brake shoe 300 is reduced, the pressure value sensed by the pin shaft type pressure sensor 400 is lowered, thereby triggering an alarm.
As shown in fig. 1 and 2, on the basis of the above embodiment, the brake further includes a braking torque detector 500 electrically connected to the pin pressure sensor 400, and the braking torque detector 500 is configured to receive a signal from the pin pressure sensor 400 and calculate a braking torque of the brake shoe 300.
Preferably, it is actually a detector for receiving the signal generated by the pin pressure sensor 400, and the braking torque detector 500 is an existing electronic component capable of converting the braking torque according to the pressure value transmitted by the pin pressure sensor 400, and then monitoring and displaying the converted torque in real time through a display screen.
As shown in fig. 1 and 2, in addition to the above embodiments, the brake shoe 300 is provided with a first shaft hole (not shown), the brake arm 200 is provided with a second shaft hole (not shown), and the pin pressure sensor 400 passes through the first shaft hole and the second shaft hole to hinge the brake shoe and the brake arm.
Preferably, the first shaft hole and the second shaft hole facilitate the penetration of the pin-type pressure sensor, and when the brake arm 200 pushes the brake shoe 300 toward the brake wheel, the acting force is transmitted through the pin-type pressure sensor 400, so that the actual torque can be calculated according to the acting force of the pin-type pressure sensor 400.
As shown in fig. 1 and 2, on the basis of the above embodiment, an alarm circuit is disposed in the brake torque detector 500, and the alarm circuit sends out an early warning signal when the torque of the brake shoe approaches the rated torque, so as to achieve an early warning effect.
Preferably, in the actual working process, an alarm circuit is arranged in the braking torque detector 500, when the torque is lower than 110% of the design requirement, the alarm starts to alarm, the equipment operator is informed to timely inform maintenance personnel to adjust the torque,
as shown in fig. 1 and 2, in addition to the above embodiments, a control circuit (not shown) is disposed in the braking torque detector 500, the control circuit is used to electrically connect with the main circuit of the equipment, and the control circuit can cut off the main circuit of the equipment when the torque of the brake shoe is insufficient.
The control circuit is installed in the braking torque detector 500, the control circuit actually plays the role of a relay, the function of the control circuit can also be realized by directly utilizing the relay, when the torque is lower than 100 percent of the design requirement, the control circuit of the main circuit of the equipment is automatically disconnected by utilizing the small control circuit, and the alarming sound is upgraded to the harsh long sound.
As shown in fig. 1, in addition to the above-mentioned embodiment, the base 100 is provided with a hydraulic push rod 600 and a spring 700, the spring 700 is located between the hydraulic push rod 600 and the brake arm 200, the hydraulic push rod 600 is provided with a driving arm, and both the driving arm and the spring 700 are hinged to the brake arm 200.
Preferably, the hydraulic push rod 600 and the spring 700 are conventional components in a brake, and the working principle of the hydraulic push rod 600 is that the hydraulic push rod 600 is started to lift the right end of the driving arm and drive the spring 700 to pull open, so that the two brake arms 200 are expanded outwards, the brake shoe 300 is separated from the brake wheel, and after the hydraulic push rod 600 is powered off, the spring 700 pulls the driving arm downwards, so that the brake arms 200 are clamped, and the brake shoe 300 is abutted against the brake wheel, so that the braking effect is achieved.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (6)
1. A brake shoe brake capable of detecting torque, comprising:
a base;
the number of the brake arms is two, and the lower ends of the two brake arms are respectively hinged to two ends of the base;
the number of the brake shoes is two, the two brake shoes are respectively arranged on the two brake arms, and the brake shoes are used for tightly holding a brake wheel;
a pin pressure sensor passing through the brake shoe and the brake arm to connect the brake shoe and the brake arm, and sensing an applied force to which the brake shoe is subjected.
2. A torque detectable brake shoe brake as claimed in claim 1, wherein: the brake torque detector is electrically connected with the pin shaft type pressure sensor and used for receiving signals of the pin shaft type pressure sensor and calculating the brake torque of the brake shoe.
3. A torque detectable brake shoe brake as claimed in claim 2, wherein: the brake shoe is provided with a first shaft hole, the brake arm is provided with a second shaft hole, and the pin shaft type pressure sensor penetrates through the first shaft hole and the second shaft hole so as to enable the brake shoe to be hinged with the brake arm.
4. A torque detectable brake shoe brake as claimed in claim 2, wherein: and an alarm circuit is arranged in the brake torque detector.
5. A brake-shoe brake capable of detecting torque as claimed in claim 4, wherein: the braking torque detector is also internally provided with a control circuit, the control circuit is electrically connected with the main circuit of the equipment, and the control circuit can cut off the main circuit of the equipment when the torque of the braking shoe is insufficient.
6. A torque detectable brake shoe brake as claimed in claim 1, wherein: the hydraulic brake device is characterized in that a hydraulic push rod and a spring are arranged on the base, the spring is located between the hydraulic push rod and the brake arm, a driving arm is arranged on the hydraulic push rod, and the driving arm and the spring are hinged to the brake arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921599774.5U CN210533594U (en) | 2019-09-24 | 2019-09-24 | Brake shoe type brake capable of detecting moment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921599774.5U CN210533594U (en) | 2019-09-24 | 2019-09-24 | Brake shoe type brake capable of detecting moment |
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| Publication Number | Publication Date |
|---|---|
| CN210533594U true CN210533594U (en) | 2020-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921599774.5U Active CN210533594U (en) | 2019-09-24 | 2019-09-24 | Brake shoe type brake capable of detecting moment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113446339A (en) * | 2021-07-06 | 2021-09-28 | 石家庄五龙制动器股份有限公司 | Brake capable of detecting braking torque |
| WO2021238403A1 (en) * | 2020-05-26 | 2021-12-02 | 石家庄五龙制动器股份有限公司 | Braking torque sensor for brake |
| WO2022213771A1 (en) * | 2020-12-15 | 2022-10-13 | 石家庄五龙制动器股份有限公司 | Drum brake |
| CN117268620A (en) * | 2023-11-21 | 2023-12-22 | 河南卫华重型机械股份有限公司 | Intelligent detection device for braking moment of crane |
-
2019
- 2019-09-24 CN CN201921599774.5U patent/CN210533594U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021238403A1 (en) * | 2020-05-26 | 2021-12-02 | 石家庄五龙制动器股份有限公司 | Braking torque sensor for brake |
| JP2023511947A (en) * | 2020-05-26 | 2023-03-23 | 石家庄五龍制動器股▲ふん▼有限公司 | brake braking torque sensor |
| US11725705B2 (en) | 2020-05-26 | 2023-08-15 | Shijiazhuang Wulong Brake Corporation | Braking torque sensor of brake |
| JP7348407B2 (en) | 2020-05-26 | 2023-09-20 | 石家庄五龍制動器股▲ふん▼有限公司 | brake braking torque sensor |
| WO2022213771A1 (en) * | 2020-12-15 | 2022-10-13 | 石家庄五龙制动器股份有限公司 | Drum brake |
| CN113446339A (en) * | 2021-07-06 | 2021-09-28 | 石家庄五龙制动器股份有限公司 | Brake capable of detecting braking torque |
| CN117268620A (en) * | 2023-11-21 | 2023-12-22 | 河南卫华重型机械股份有限公司 | Intelligent detection device for braking moment of crane |
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