CN221078045U

CN221078045U - Fault diagnosis test bed for crane speed reducer

Info

Publication number: CN221078045U
Application number: CN202322440057.0U
Authority: CN
Inventors: 张寅�
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-09-08
Filing date: 2023-09-08
Publication date: 2024-06-04
Anticipated expiration: 2033-09-08

Abstract

The application discloses a fault diagnosis test bed for a crane reducer, and belongs to the technical field of fault diagnosis. Comprising the following steps: the device comprises a supporting seat, a pressing roller set, a speed reducer connecting piece, a speed reducer fixing seat and an acceleration sensor; the speed reducer fixing base is detachably connected with the speed reducer connecting piece, the speed reducer fixing base is fixed on one side of the supporting seat, the speed reducer connecting piece is rotationally connected with the supporting seat, the pressing roller set is in sliding connection with the supporting seat, the pressing roller set is tangential to the speed reducer connecting piece, one end of the acceleration sensor is connected with the speed reducer connecting piece, the other end of the acceleration sensor is fixedly connected with the supporting seat, the speed reducer is detachably mounted on the speed reducer fixing base, an output shaft of the speed reducer is coaxially detachably connected with the speed reducer connecting piece, the integral structure is simplified, the speed reducer is convenient to disassemble and assemble, and meanwhile different load acting forces can be applied to the speed reducer.

Description

Fault diagnosis test bed for crane speed reducer

Technical Field

The application relates to the technical field of fault diagnosis, in particular to a fault diagnosis test bed for a crane reducer.

Background

The crane has very important position in the transportation field, has very wide application range in China, along with the continuous development of science and technology, crane equipment is continuously developed towards the direction of large-scale, continuous and automatic, along with the increasing functions of the crane equipment, the composition and structure of the crane equipment are more and more complex, and once the crane equipment fails, the crane equipment can cause great influence on the life and property safety of production and people. The speed reducer is used as an important part of the crane, directly influences the performance of the whole crane, and the failure of the speed reducer can cause the whole crane to work abnormally or cause safety accidents. The failure of the speed reducer is mainly caused by failure of a gear box, a shaft, a bearing, a gear and the like. The failure of the gear box is mainly the case body rupture, which is easy to observe; the failure of the shaft is basically fracture, has burst property and is not easy to find in advance; failure of the bearing is mainly wear or ball (column) chipping, etc.; the failure of the gear is common and is not easy to monitor, and can be generally divided into the forms of tooth surface abrasion, tooth surface gluing, tooth surface peeling, gear plastic deformation, gear cracking or breaking and the like, the detection of the existing crane speed reducer lacks a proper fault diagnosis means, and whether equipment has faults or not is generally judged by opening the speed reducer to observe the inside.

The prior art publication No. CN215414372U provides a fault diagnosis test bed for the crane reducer, the device drives the reducer to rotate through a coupler after a motor is electrified, and then an acceleration sensor is used for detecting a vibration signal in the working state of the reducer, so that an upper computer is matched according to the vibration signal, and the fault of the crane reducer is diagnosed. According to the scheme disclosed by the utility model, whether the speed reducer has faults or not can be judged on the premise that the speed reducer is not required to be disassembled, so that the difficulty, the efficiency and the cost of fault detection of the speed reducer are reduced.

The above prior art solution, though realizing the beneficial effects related to the prior art by the structure of the prior art, still has the following drawbacks: the device can't carry out different load states to the output shaft and carry out fault diagnosis when carrying out fault diagnosis to the reduction gear, then need hoist and mount the load of different weight on the lifting hook when needs load, when reel winding lifting hook risen, the object of hoist and mount risees, easily causes the risk that drops and smash bottom inspection personnel to make holistic structure great, it is comparatively heavy.

In the related art, the inventor considers that fault diagnosis cannot be performed on the output shaft in different load states when fault diagnosis is performed on the speed reducer, when load is needed, loads with different weights are needed to be hoisted on the lifting hook, when the winding drum is wound on the lifting hook to ascend, hoisted objects are lifted, risks of dropping and smashing bottom detection personnel are easily caused, and the whole structure is large and heavy.

In view of this, we propose a crane reducer fault diagnosis test stand.

Disclosure of utility model

1. Technical problem to be solved

The application aims to provide a fault diagnosis test bed for a crane speed reducer, which solves the technical problems in the background art, simplifies the whole structure, facilitates the disassembly and assembly of the speed reducer, and can apply different load acting forces to the speed reducer.

2. Technical proposal

The technical scheme of the application provides a fault diagnosis test bed for a crane reducer, which comprises the following components: the device comprises a supporting seat, a pressing roller set, a speed reducer connecting piece, a speed reducer fixing seat and an acceleration sensor; the speed reducer fixing seat is detachably connected with the speed reducer connecting piece, the speed reducer fixing seat is fixed on one side of the supporting seat, the speed reducer connecting piece is rotationally connected with the supporting seat, the pressing roller set is in sliding connection with the supporting seat, the pressing roller set is tangential to the speed reducer connecting piece, one end of the acceleration sensor is connected with the speed reducer connecting piece, the other end of the acceleration sensor is fixedly connected with the supporting seat, the speed reducer is detachably mounted on the speed reducer fixing seat, and an output shaft of the speed reducer is coaxially detachably connected with the speed reducer connecting piece.

Through adopting above-mentioned technical scheme, with reduction gear fixed mounting on the reduction gear fixing base, and make output shaft and the coaxial fixed mounting of reduction gear connecting piece, then slip regulation is exerted on the roller train that presses, the roller train extrusion effect down on the reduction gear connecting piece, acceleration sensor's one end is fixed with the reduction gear connecting piece, the other end passes through pole setting and supporting seat fixed connection, at the extrusion and the frictional force of roller train and reduction gear connecting piece that exert pressure this moment, adjust different extrusion effort, and then can carry out the regulation of different loads to the output shaft of reduction gear, make overall structure simpler, and can exert different load effort to the reduction gear.

As an alternative scheme of the technical scheme of the application, the supporting seat comprises a frame, a chute is arranged on the inner side of the frame, and the pressing roller set comprises a sliding block, a pressing roller rotationally connected with a sliding block shaft and a first pressing screw for adjusting the sliding of the sliding block; the sliding block and the sliding groove are matched to slide, one side of the first extrusion screw rod, which is far away from the extrusion roller, of the sliding block is propped against the first extrusion screw rod, and the first extrusion screw rod is in threaded connection with the frame.

Through adopting above-mentioned technical scheme, the one end fixed mounting bearing that first extrusion screw is close to the slider is through the wearing and tearing that cause when reducing first extrusion screw to the slider extrusion, makes the extrusion roller extrude to the direction of reduction gear connecting piece through rotating first extrusion screw, and then through rotating the extrusion intensity of first extrusion screw alright regulation extrusion roller and reduction gear connecting piece.

As an alternative scheme of the technical scheme of the application, a pressure sensor is fixedly arranged on one side, close to the first extrusion screw rod, of the sliding block, and the first extrusion screw rod is abutted against the pressure sensor.

Through adopting above-mentioned technical scheme, when first extrusion screw clockwise turn, first extrusion screw extrusion is used in pressure sensor to be convenient for decide the pressure regulation extrusion effort through pressure sensor's numerical value.

As an alternative to the technical solution of the present application, the reducer connecting piece includes a sleeve, a fixing pin and a limiting ring; the fixed pin is fixed in the sheathed tube downthehole, sleeve pipe and output shaft adaptation, and the fixed pin is with the cotter way adaptation of seting up on the output shaft, fixed mounting has the positioning seat on the supporting seat, set up the rotation groove with the sleeve pipe adaptation on the positioning seat, the coaxial fixed stop collar in sheathed tube both ends.

Through adopting above-mentioned technical scheme, sleeve pipe and rotation groove adaptation rotate to sleeve pipe and squeeze roll are close to the opening side of rotation groove tangent, and the axial both ends of rotation groove are arranged in to the spacing ring, in order to avoid sheathed tube axial float, insert the sheathed tube through-hole with the output shaft, and make cotter groove and fixed pin dock, alright accomplish output shaft and sheathed tube fixed mounting this moment, alright drive sheathed tube rotation when the output shaft rotates, make things convenient for the dismouting.

As an alternative scheme of the technical scheme of the application, the speed reducer fixing seat comprises a box body with an opening structure at the upper end and matched with the speed reducer, one side of the box body is connected with a second extrusion screw in a threaded manner, and the second extrusion screw is coaxial with the output shaft.

Through adopting above-mentioned technical scheme, put into the box with the reduction gear, then extrude the reduction gear through the second extrusion screw for in the sheathed tube through-hole was inserted to the output shaft, be close to the one end fixed mounting bearing of reduction gear at the second extrusion screw, in order to reduce the damage to the reduction gear, the coaxial setting of second extrusion screw and output shaft, and then can improve the stability that reduction gear and box are fixed.

3. Advantageous effects

One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages:

1. according to the application, the speed reducer is fixedly arranged on the speed reducer fixing seat, the output shaft and the speed reducer connecting piece are coaxially and fixedly arranged, then the pressurizing roller set is slidably adjusted, one end of the acceleration sensor is fixedly connected with the speed reducer connecting piece under the extrusion action of the pressurizing roller set, and the other end of the acceleration sensor is fixedly connected with the supporting seat through the upright rod, so that different extrusion acting forces are adjusted under the extrusion and friction acting forces of the pressurizing roller set and the speed reducer connecting piece, and further, the output shaft of the speed reducer can be adjusted under different loads, the overall structure is simpler, and different load acting forces can be applied to the speed reducer.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a failure diagnosis test stand for a crane retarder according to a preferred embodiment of the present application;

FIG. 2 is a schematic view of a part of a fault diagnosis test stand for a crane retarder according to a preferred embodiment of the present application;

FIG. 3 is a schematic diagram of a bushing structure of a fault diagnosis test stand for a crane retarder according to a preferred embodiment of the present application;

FIG. 4 is a schematic diagram of a reduction gear;

FIG. 5 is a schematic diagram showing the installation state of a decelerator of a failure diagnosis test stand for a crane decelerator according to a preferred embodiment of the present application;

The reference numerals in the figures illustrate: 1. a support base; 101. a frame; 1011. a chute; 2. a pressing roller set; 201. a slide block; 202. a squeeze roll; 203. a first extrusion screw; 204. a pressure sensor; 3. a decelerator coupling; 301. a sleeve; 302. a fixing pin; 303. a limiting ring; 304. a positioning seat; 3041. a rotating groove; 4. a speed reducer fixing seat; 401. a case; 402. a second extrusion screw; 5. an acceleration sensor; 501. a vertical rod; 6. a bearing; 7. a speed reducer; 701. an output shaft; 7011. pin grooves.

Detailed Description

The application is described in further detail below with reference to the drawings.

A crane reducer fault diagnosis test stand, comprising: the device comprises a supporting seat 1, a pressing roller set 2, a speed reducer connecting piece 3, a speed reducer fixing seat 4 and an acceleration sensor 5; the speed reducer fixing seat 4 is detachably connected with the speed reducer connecting piece 3, the speed reducer fixing seat 4 is fixed on one side of the supporting seat 1, the speed reducer connecting piece 3 is rotationally connected with the supporting seat 1, the pressing roller set 2 is in sliding connection with the supporting seat 1, the pressing roller set 2 is tangential with the speed reducer connecting piece 3, one end of the acceleration sensor 5 is connected with the speed reducer connecting piece 3, the other end is fixedly connected with the supporting seat 1, the speed reducer 7 is detachably mounted on the speed reducer fixing seat 4, and an output shaft 701 of the speed reducer 7 is coaxially detachably connected with the speed reducer connecting piece 3.

Referring to fig. 1-5, the reducer 7 is fixedly installed on the reducer fixing seat 4, and the output shaft 701 is fixedly installed coaxially with the reducer connecting piece 3, then the pressing roller set 2 is slidingly adjusted, one end of the acceleration sensor 5 is fixed with the reducer connecting piece 3 under the extrusion action of the pressing roller set 2, the other end of the acceleration sensor is fixedly connected with the supporting seat 1 through the upright rod 501, at this time, different extrusion acting forces are adjusted under the extrusion and friction acting forces of the pressing roller set 2 and the reducer connecting piece 3, and then the output shaft 701 of the reducer 7 can be adjusted under different loads, so that the overall structure is simpler, and different load acting forces can be applied to the reducer 7.

The support seat 1 comprises a frame 101, a sliding groove 1011 is formed in the inner side of the frame 101, and the pressing roller set 2 comprises a sliding block 201, a pressing roller 202 rotatably connected with the sliding block 201 in a shaft mode and a first pressing screw 203 for adjusting the sliding of the sliding block 201; the sliding block 201 slides in a matching manner with the sliding groove 1011, one side of the first extrusion screw 203, which is far away from the extrusion roller 202, of the sliding block 201 is propped against, and the first extrusion screw 203 is in threaded connection with the frame 101.

Referring to fig. 2 and 5, a bearing 6 is fixedly installed at one end of the first extrusion screw 203 near the slider 201, wear caused when the first extrusion screw 203 extrudes toward the slider 201 is reduced by the bearing 6, the extrusion roller 202 extrudes toward the speed reducer connecting piece 3 by rotating the first extrusion screw 203, and extrusion strength of the extrusion roller 202 and the speed reducer connecting piece 3 can be adjusted by rotating the first extrusion screw 203.

A pressure sensor 204 is fixedly arranged on one side of the sliding block 201, which is close to the first extrusion screw 203, and the first extrusion screw 203 is propped against the pressure sensor 204.

Referring to fig. 5, when the first press screw 203 rotates clockwise, the first press screw 203 presses against the pressure sensor 204 to facilitate the constant pressure adjustment of the pressing force by the value of the pressure sensor 204.

The reducer union 3 comprises a sleeve 301 and a fixed pin 302 and a stop collar 303; the fixed pin 302 is fixed in a hole of the sleeve 301, the sleeve 301 is matched with the output shaft 701, the fixed pin 302 is matched with a pin groove 7011 formed in the output shaft 701, the supporting seat 1 is fixedly provided with a positioning seat 304, the positioning seat 304 is provided with a rotating groove 3041 matched with the sleeve 301, and two ends of the sleeve 301 are coaxially fixed with the limiting rings 303.

Referring to fig. 1-3 and 5, the sleeve 301 is adapted to rotate with the rotation groove 3041, and the sleeve 301 and the squeeze roller 202 are tangent to the opening side of the rotation groove 3041, and the limiting rings 303 are disposed at two axial ends of the rotation groove 3041 to avoid axial movement of the sleeve 301, so that the output shaft 701 is inserted into the through hole of the sleeve 301, and the pin groove 7011 is abutted with the fixing pin 302, at this time, the fixed installation of the output shaft 701 and the sleeve 301 can be completed, and the sleeve 301 can be driven to rotate when the output shaft 701 rotates, thereby facilitating disassembly and assembly.

The reducer fixing seat 4 comprises a box body 401 with an opening structure at the upper end and matched with the reducer 7, one side of the box body 401 is connected with a second extrusion screw 402 in a threaded manner, and the second extrusion screw 402 is coaxial with the output shaft 701.

Referring to fig. 1 and 2 and fig. 5, the speed reducer 7 is placed in the box 401, and then the speed reducer 7 is extruded by the second extrusion screw 402, so that the output shaft 701 is inserted into the through hole of the sleeve 301, the bearing 6 is fixedly installed at one end of the second extrusion screw 402, which is close to the speed reducer 7, so as to reduce damage to the speed reducer 7, and the second extrusion screw 402 and the output shaft 701 are coaxially arranged, so that the stability of fixing the speed reducer 7 and the box 401 can be improved.

Working principle: the speed reducer 7 is placed in the box 401, the output shaft 701 penetrates through the box 401, the output shaft 701 corresponds to the through hole of the sleeve 301, the fixing pin 302 is inserted into the pin groove 7011, then the second extrusion screw 402 is rotated clockwise, the speed reducer 7 is fixed in the box 401, then the first extrusion screw 203 is rotated clockwise, the extrusion roller 202 is extruded tangentially to the sleeve 301, at the moment, the extrusion pressure of the pressure sensor 204 is observed, the speed reducer 7 is stopped after the extrusion pressure reaches the designated pressure, the speed reducer 7 is started finally, the sleeve 301 is driven to rotate, the acceleration sensor 5 acquires vibration signals in the working state of the speed reducer, and the vibration signals are sent to the upper computer after being subjected to data processing through the data acquisition card. The upper computer analyzes and classifies the same fault characteristic signals, and the signal characteristics collected in the fault diagnosis of the actual crane reducer 7 can be matched with the fault characteristics extracted by the test bed, so that a user is helped to realize the purpose of rapidly diagnosing the faults of the crane reducer 7.

Claims

1. A fault diagnosis test bed for a crane speed reducer is characterized in that: comprising the following steps: the device comprises a supporting seat (1), a pressing roller set (2), a speed reducer connecting piece (3), a speed reducer fixing seat (4) and an acceleration sensor (5); the speed reducer fixing seat (4) is detachably connected with the speed reducer connecting piece (3), the speed reducer fixing seat (4) is fixed on one side of the supporting seat (1), the speed reducer connecting piece (3) is rotationally connected with the supporting seat (1), the pressing roller set (2) is in sliding connection with the supporting seat (1), the pressing roller set (2) is tangential with the speed reducer connecting piece (3), one end of the acceleration sensor (5) is connected with the speed reducer connecting piece (3), the other end of the acceleration sensor is fixedly connected with the supporting seat (1), the speed reducer (7) is detachably mounted on the speed reducer fixing seat (4), and an output shaft (701) of the speed reducer (7) is coaxially detachably connected with the speed reducer connecting piece (3).

2. The crane reducer fault diagnosis test stand of claim 1, wherein: the support seat (1) comprises a frame (101), a sliding groove (1011) is formed in the inner side of the frame (101), and the pressing roller set (2) comprises a sliding block (201), a pressing roller (202) which is rotationally connected with the sliding block (201) and a first pressing screw (203) which is used for adjusting the sliding of the sliding block (201); the sliding block (201) and the sliding groove (1011) are matched to slide, one side of the first extrusion screw (203) which is far away from the extrusion roller (202) with the sliding block (201) is propped against, and the first extrusion screw (203) is in threaded connection with the frame (101).

3. The crane reducer fault diagnosis test stand of claim 2, wherein: a pressure sensor (204) is fixedly arranged on one side, close to the first extrusion screw (203), of the sliding block (201), and the first extrusion screw (203) abuts against the pressure sensor (204).

4. The crane reducer fault diagnosis test stand of claim 1, wherein: the reducer connecting piece (3) comprises a sleeve (301) and a fixed pin (302) and a limiting ring (303); fixed pin (302) are fixed in the hole of sleeve pipe (301), sleeve pipe (301) and output shaft (701) adaptation, and fixed pin (302) are with the adaptation of cotter way (7011) of seting up on output shaft (701), fixed mounting has positioning seat (304) on supporting seat (1), set up on positioning seat (304) with sleeve pipe (301) adaptation rotate groove (3041), sleeve pipe (301) both ends coaxial fixed limiting ring (303).

5. The crane reducer fault diagnosis test stand of claim 1, wherein: the speed reducer fixing seat (4) comprises a box body (401) with an opening structure at the upper end and matched with the speed reducer (7), one side of the box body (401) is connected with a second extrusion screw (402) in a threaded mode, and the second extrusion screw (402) is coaxial with the output shaft (701).