CN212807585U - Ratchet type drum brake detection device of crane - Google Patents
Ratchet type drum brake detection device of crane Download PDFInfo
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- CN212807585U CN212807585U CN202021695547.5U CN202021695547U CN212807585U CN 212807585 U CN212807585 U CN 212807585U CN 202021695547 U CN202021695547 U CN 202021695547U CN 212807585 U CN212807585 U CN 212807585U
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- powder clutch
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- encoder
- drum brake
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Abstract
The utility model provides a hoist ratchet type drum brake detection device, include: the system comprises a variable-frequency driving motor, a magnetic powder clutch, an encoder and a controller, wherein an output shaft of the variable-frequency driving motor is connected with one end of a rotating shaft of the magnetic powder clutch through a coupler, and the other end of the rotating shaft of the magnetic powder clutch is connected with an input shaft of a speed reducer of a tested reel brake; the encoder is connected with a reel supporting shaft of the tested reel brake; the variable frequency driving motor, the magnetic powder clutch and the encoder are respectively connected with the controller. The utility model has the advantages as follows: utilize miniwatt variable frequency driving motor as power pack, utilize magnetic particle clutch as overload protection device, utilize the synchronous encoder of reel as speed detection mechanism, can realize accurate speed governing and speed feedback, have good anti-overload ability, prevent to cause mechanical structure's destruction because of quick braking.
Description
Technical Field
The utility model relates to a hoist equipment detection device technical field especially indicates a hoist ratchet type drum brake detection device.
Background
In the field of universal cranes, a ratchet type drum brake is a safe and reliable brake, and the structure of the ratchet type drum brake can effectively prevent a crane hook from rapidly descending at a free falling speed due to insufficient braking torque of a braking motor, connection and disconnection of a motor and a speed reducer, failure of a high-speed shaft working brake of the speed reducer and the like, so that loss of hoisting equipment or casualty accidents are avoided.
In order to ensure the effectiveness of the ratchet wheel type drum brake, a drum brake test is required when the crane leaves a factory, when the rotating speed of the drum exceeds 30% of the rated rotating speed, a pawl is inserted into a ratchet wheel, and the drum stops rotating. At present, a full-load counterweight free-falling body acceleration mode is generally adopted in the industry for delivery test, the rotating speed of a winding drum is difficult to accurately detect and control during the test, and the gravity acceleration generated during counterweight free-falling body can generate irreversible damage to a hoisting mechanism transmission assembly (a motor, a speed reducer, a coupler and a gear ring gear) to influence the operation safety of a crane.
SUMMERY OF THE UTILITY MODEL
The utility model provides a hoist ratchet type drum brake detection device has solved among the prior art drum brake and has dispatched the factory test and be difficult to obtain the problem that accurate detection and control, cause irreversible damage to hoisting mechanism drive assembly easily.
The technical scheme of the utility model is realized like this:
a crane ratchet-type drum brake detection device comprising: the system comprises a variable frequency driving motor, a magnetic powder clutch, an encoder and a controller, wherein an output shaft of the variable frequency driving motor is connected with one end of a rotating shaft of the magnetic powder clutch through a coupler, and the other end of the rotating shaft of the magnetic powder clutch is connected with an input shaft of a speed reducer of a tested reel brake; the encoder is connected with a winding drum supporting shaft of the tested winding drum brake; the variable frequency driving motor, the magnetic powder clutch and the encoder are respectively connected with the controller.
Preferably, the controller is a touch control all-in-one machine.
Preferably, the magnetic powder clutch body is fixedly connected with the variable-frequency drive motor body through a first flange; and the magnetic powder clutch body is fixedly connected with the speed reducer body of the tested drum brake through a second flange.
The utility model has the advantages that:
a variable frequency driving motor is used as a driver, and the rotating speed is adjusted by a frequency converter, so that the detection efficiency and precision are improved; adopt the encoder as rotational speed detection device, realize closed-loop control, when reel braking during operation, can cut off the converter output automatically, protect variable frequency driving motor, still can convert the rotational speed into visual data.
The touch control integrated machine is used as a controller, can control the rotating speed, the rotating direction and the test mode, is communicated with a frequency converter of the variable-frequency driving motor, can quickly set parameters such as the rotating speed, the rated load and the rotating direction, and is convenient for inspectors to detect and record detection results according to project requirements.
Overload protection is carried out through the magnetic powder clutch, when the driving torque is larger than the set torque, the magnetic powder clutch is separated, and the transmission mechanism is protected from being damaged due to overload; the magnetic powder clutch has high response speed, can effectively prevent irreversible damage to each structure caused by impact load generated by testing rapid braking, and improves the detection precision and the testing speed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the ratchet type drum brake detection device of the crane according to the present invention in use;
fig. 2 is a front view of fig. 1.
In the figure:
1. frequency conversion driving motor, 2, magnetic particle clutch, 3, encoder, 4, measured reel stopper, 5, first flange, 6, second flange.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As can be seen from the embodiments shown in fig. 1-2, the present invention provides a ratchet type drum brake detection device for crane, comprising: the device comprises a variable-frequency driving motor 1, a magnetic powder clutch 2, an encoder 3 and a controller, wherein an output shaft of the variable-frequency driving motor 1 is connected with one end of a rotating shaft of the magnetic powder clutch 2 through a coupler, and the other end of the rotating shaft of the magnetic powder clutch 2 is connected with an input shaft of a speed reducer of a tested reel brake 4; the encoder 3 is connected with a reel supporting shaft of the tested reel brake 4; the variable frequency driving motor 1, the magnetic powder clutch 2 and the encoder 3 are respectively connected with a controller.
The controller is a touch control integrated machine.
The magnetic powder clutch 2 body is fixedly connected with the variable frequency driving motor 1 body through a first flange 5; the magnetic powder clutch 2 body is fixedly connected with the speed reducer body of the tested drum brake 4 through a second flange 6.
The ratchet wheel type drum brake detection device of the crane adopts the variable frequency driving motor 1 as a driver, and the rotating speed is adjusted by a frequency converter, so that the detection efficiency and precision are improved; adopt encoder 3 as rotational speed detection device, realize closed-loop control, when reel braking during operation, can cut off the converter output automatically, protection frequency conversion driving motor 1 still can convert the rotational speed into visual data.
The touch control integrated machine is used as a controller, can control the rotating speed, the rotating direction and the test mode, is communicated with a frequency converter of the variable-frequency driving motor 1, can quickly set parameters such as the rotating speed, the rated load and the rotating direction, and is convenient for inspectors to detect and record detection results according to project requirements.
Overload protection is carried out through the magnetic powder clutch 2, when the driving torque is larger than the set torque, the magnetic powder clutch 2 is separated, and the transmission mechanism is protected from being damaged due to overload; the magnetic powder clutch 2 has high response speed, can effectively prevent irreversible damage to each structure caused by impact load generated by testing rapid braking, and improves the detection precision and the testing speed.
To sum up, hoist ratchet type reel stopper detection device be low torque adjustable speed accredited testing organization, utilize miniwatt variable frequency drive motor 1 as power pack, utilize magnetic powder clutch 2 as overload protection device, utilize reel synchronous encoder 3 as speed detection mechanism, can realize accurate speed governing and speed feedback, have good overload protection ability, prevent to cause mechanical structure's destruction because of quick braking.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. A crane ratchet type drum brake detection device, comprising: the device comprises a variable frequency driving motor (1), a magnetic powder clutch (2), an encoder (3) and a controller, wherein an output shaft of the variable frequency driving motor (1) is connected with one end of a rotating shaft of the magnetic powder clutch (2) through a coupler, and the other end of the rotating shaft of the magnetic powder clutch (2) is connected with an input shaft of a speed reducer of a tested drum brake (4); the encoder (3) is connected with a winding drum supporting shaft of the tested winding drum brake (4); the variable-frequency driving motor (1), the magnetic powder clutch (2) and the encoder (3) are respectively connected with the controller.
2. The crane ratchet type drum brake detecting device according to claim 1, wherein the controller is a touch-control all-in-one machine.
3. The ratchet type drum brake detection device of the crane according to claim 1, wherein the magnetic particle clutch (2) body is fixedly connected with the variable frequency drive motor (1) body through a first flange (5); the magnetic powder clutch (2) body is fixedly connected with the speed reducer body of the tested drum brake (4) through a second flange (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021695547.5U CN212807585U (en) | 2020-08-14 | 2020-08-14 | Ratchet type drum brake detection device of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021695547.5U CN212807585U (en) | 2020-08-14 | 2020-08-14 | Ratchet type drum brake detection device of crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212807585U true CN212807585U (en) | 2021-03-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021695547.5U Active CN212807585U (en) | 2020-08-14 | 2020-08-14 | Ratchet type drum brake detection device of crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212807585U (en) |
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2020
- 2020-08-14 CN CN202021695547.5U patent/CN212807585U/en active Active
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