On-line detection device for braking distance of hoisting mechanism of general bridge crane

Abstract

A general bridge crane hoisting mechanism braking distance on-line detection device comprises a strong magnet used for being fixedly attracted to a crane roller fixing support, the strong magnet is connected with a dust cover through an adjusting assembly, a photoelectric rotary encoder is fixedly arranged below the dust cover, and the photoelectric rotary encoder is connected with a motor. A roller connected with the photoelectric rotary encoder is arranged in the dust cover, and one side, exposed out of the dust cover, of the roller is in contact with a rotating shaft of the crane roller. The adjusting assembly is arranged to enable the rubber roller and the photoelectric rotary encoder to be close to the rotating shaft of the crane roller, so that the rotating shaft can be measured at different positions, and the dustproof cover is arranged to prevent the roller and the photoelectric rotary encoder from being interfered by dust and the like during working so as not to affect the measurement result.

Description

TECHNICAL FIELD

[0001] The utility model relates to general bridge crane hoisting mechanism braking distance on -line detection technical field, especially related to a kind of general bridge crane hoisting mechanism braking distance on -line detection device. BACKGROUND

[0002] Crane hoisting mechanism descent braking distance is an important index to measure the safety performance of hoisting machinery. For a long time, the detection of this index is carried out when the crane is supervised and inspected or periodically inspected. Because the detection cycle interval time is long, the over-standard of the sliding amount caused by the deterioration of the braking performance cannot be found and predicted in time, which seriously threatens the safe operation of the hoisting machinery. At present, the detection of crane descent braking distance mainly includes visual inspection and special instrument method. These detection means and methods are only suitable for the braking performance detection of products of crane manufacturers or the detection of braking sliding amount in the annual inspection of the crane, and cannot realize long-term continuous monitoring of this index. Therefore, we design a crane hoisting mechanism braking process parameter detection and braking performance analysis method based on displacement measurement and real-time monitoring of hoisting mechanism operating state, which measures and records the crane hoisting mechanism braking process parameters in real time, provides basis for evaluating the braking performance of the hoisting mechanism, and realizes the automatic prediction of braking performance fault. CONTENT OF UTILITY MODEL

[0003] The utility model aims at providing a kind of general bridge crane hoisting mechanism braking distance on -line detection device, which measures and records the crane hoisting mechanism braking process parameters in real time, and provides basis for evaluating the braking performance of the hoisting mechanism.

[0004] In order to realize the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model provides a kind of general bridge crane hoisting mechanism braking distance on -line detection device, including the strong magnet for fixing adsorption on crane drum fixed support, the strong magnet is connected with dust cover by an adjusting assembly, dust cover is fixed below with photoelectric rotary encoder, the dust cover is provided with the gyro wheel connected with photoelectric rotary encoder, the side of gyro wheel exposing dust cover is contacted with the rotating shaft of crane drum.

[0006] Further, the adjusting assembly comprises a multi-angle adjuster fixed on the strong magnet, a first cantilever and a second cantilever, one end of the first cantilever is hingedly arranged on the multi-angle adjuster, the other end of the first cantilever is connected with the dust cover through the second cantilever, an angle limiting hole is formed in the multi-angle adjuster, a first limiting bolt matched with the angle limiting hole is arranged on the first cantilever, and the first limiting bolt is inserted into the angle limiting hole to complete limiting.

[0007] Further, a fixed arm is arranged between the first cantilever and the second cantilever, a second limiting bolt is arranged on the fixed arm, cantilever limiting holes are formed in the first cantilever and the second cantilever, and the first cantilever and the second cantilever are limited by the second limiting bolt inserted into the cantilever limiting holes.

[0008] Further, the roller is a rubber roller.

[0009] The adjusting assembly is arranged to arrange the rubber roller and the photoelectric rotary encoder close to the rotating shaft of the crane drum, the rotating shaft can be measured at different positions, and the dust cover is arranged to prevent the rubber roller and the photoelectric rotary encoder from being interfered by dust during work, so that the measurement result is affected. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a structural schematic view of the utility model.

[0011] Figure 2 It is a left view of the utility model.

[0012] Figure 3 It is a structural schematic view of the adjusting assembly.

[0013] In the figure, 1 is a crane drum fixed support, 2 is a strong magnet, 3 is a dust cover, 4 is a photoelectric rotary encoder, 5 is a roller, 6 is a multi-angle adjuster, 7 is a first cantilever, 8 is a second cantilever, 9 is an angle limiting hole, 10 is a first limiting bolt, 11 is a fixed arm, 12 is a second limiting bolt, 13 is a cantilever limiting hole, 14 is a crane drum, and 15 is a rotating shaft. DETAILED DESCRIPTION

[0014] The utility model will be further described below in combination with the drawings.

[0015] Please refer to Figures 1 to 3 The utility model provides an embodiment:

[0016] Please refer to Figure 1 and Figure 2The utility model provides a kind of general bridge crane hoisting mechanism braking distance on-line detection device, including for fixing adsorbing on crane reel fixed support 1 strong magnet 2, strong magnet 2 is connected with dust cover 3 via an adjusting assembly, dust cover 3 is fixedly arranged with photoelectric rotary encoder 4 below, dust cover 3 is provided with gyro wheel 5 connected with photoelectric rotary encoder 4, the side of gyro wheel 5 exposing dust cover 3 is contacted with the rotating shaft 15 of crane reel.

[0017] Please refer to Figure 1 And Figure 3 Adjusting assembly includes multi-angle adjuster 6, first cantilever 7 and second cantilever 8 fixedly arranged on strong magnet 2, one end of first cantilever 7 is hingedly arranged on multi-angle adjuster 6, and the other end of first cantilever 7 is connected with dust cover 3 via second cantilever 8;Multi-angle adjuster 6 is provided with angle limiting hole 9, and first cantilever 7 is provided with first limiting bolt 10 matched with angle limiting hole 9, and limiting is completed by inserting first limiting bolt 10 into angle limiting hole 9.

[0018] Please refer to Figure 1 And Figure 3 First cantilever 7 and second cantilever 8 are provided with fixed arm 11, and fixed arm 11 is provided with second limiting bolt 12;First cantilever 7 and second cantilever 8 are provided with cantilever limiting hole 13, and limiting is carried out by inserting second limiting bolt 12 into cantilever limiting hole 13 between first cantilever 7 and second cantilever 8.

[0019] Please refer to Figure 2 Gyro wheel 5 is rubber gyro wheel.

[0020] Working principle: place strong magnet 2 on crane reel fixed support 1, rotate the button on strong magnet 2, open strong magnet 2 to make strong magnet 2 fixedly adsorb on crane reel fixed support 1, adjust the positions of multi-angle adjuster 6, first cantilever 7 and second cantilever 8, make gyro wheel 5 contact with the rotating shaft 15 of crane reel, insert first limiting bolt 10 on first cantilever 7 into angle limiting hole 9 on multi-angle adjuster 6 to complete limiting, photoelectric rotary encoder 4 is fixed on dust cover 3, due to the fact that the working environment of crane is relatively bad, brush can be installed at the end of dust cover 3, so that gyro wheel 5 is in closed environment, prolong the service life of equipment, avoid the error caused by working environment. When crane hoisting operation, brake opening, detection system starts to work, when crane braking, brake closing, contact point main contact point opens, vice contact point closes, control box located on crane reel fixed support 1 receives high level signal, photoelectric rotary encoder 4 starts counting, when single-chip microcomputer detects that pulse signal reaches set value, thereby controlling sound and light alarm to issue alarm.

Claims

1. A generic bridge crane hoist mechanism braking distance online detection device, characterized by: The application relates to a fixing device for a strong magnet fixed on a fixing support of a crane reel, wherein the strong magnet is connected with a dustproof cover through an adjusting assembly, a photoelectric rotary encoder is fixedly arranged below the dustproof cover, a roller is arranged in the dustproof cover and connected with the photoelectric rotary encoder, and one side of the roller exposed from the dustproof cover is in contact with a rotating shaft of the crane reel.

2. The online detection device for the braking distance of the hoisting mechanism of a general overhead traveling crane according to claim 1, characterized in that: The adjusting assembly comprises a multi-angle adjuster fixed on the strong magnet, a first cantilever and a second cantilever, one end of the first cantilever is hingedly arranged on the multi-angle adjuster, the other end of the first cantilever is connected with the dustproof cover through the second cantilever, angle limiting holes are arranged on the multi-angle adjuster, first limiting bolts matched with the angle limiting holes are arranged on the first cantilever, and the first limiting bolts are inserted into the angle limiting holes to complete limiting.

3. A generic bridge crane hoist mechanism braking distance online detection device according to claim 2, characterized in that: A fixing arm is arranged between the first cantilever and the second cantilever, a second limiting bolt is arranged on the fixing arm, cantilever limiting holes are arranged on the first cantilever and the second cantilever, and the first cantilever and the second cantilever are limited by the second limiting bolt inserted into the cantilever limiting holes.

4. The online detection device for the braking distance of the lifting mechanism of a general overhead traveling crane according to claim 1, characterized in that: The roller is a rubber roller.

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