CN112110377A

CN112110377A - Elevator for online detection and online detection system

Info

Publication number: CN112110377A
Application number: CN202010877922.6A
Authority: CN
Inventors: 张亮
Original assignee: Yinchuan Weili Transmission Technology Co ltd
Current assignee: Yinchuan Weili Transmission Technology Co ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2020-12-22
Anticipated expiration: 2040-08-27
Also published as: CN112110377B

Abstract

The present disclosure provides a lift for on-line detection and an on-line detection system. The online detection elevator comprises a frame, an elevating mechanism and a translation mechanism; the lifting mechanism comprises a lifting part, a vertical guide shaft and a first driving device, the vertical guide shaft is fixedly connected with the rack, the lifting part is connected with the vertical guide shaft in a sliding manner, and the first driving device is used for driving the lifting part to reciprocate along the vertical guide shaft; the translation mechanism comprises a translation part, a horizontal guide rail and a second driving device, the horizontal guide rail is fixedly connected with the lifting part, the translation part is connected with the horizontal guide rail in a sliding manner, and the second driving device is used for driving the translation part to reciprocate along the horizontal guide rail; the translation section is used at least in part to lift the target assembly to be inspected. This lift for on-line measuring can realize the line detection of target subassembly, improves the production efficiency of reduction gear.

Description

Elevator for online detection and online detection system

Technical Field

The disclosure relates to the technical field of detection equipment, in particular to a lifter for online detection and an online detection system.

Background

Wind energy is a clean, practical, economic and environment-friendly renewable energy source, can provide a sustainable energy base for human development, and has an important strategic position in future energy systems for wind power generation. A wind generating set (wind generating set for short) is a machine for converting wind energy into electric energy and consists of a plurality of mechanical parts. In order to maintain stable operation of the wind turbine, yaw and pitch reducers must be used to adjust the azimuth of the wind and the angle of the blades.

With the rapid development of the wind power industry, the requirement on the production efficiency of the wind power yaw variable pitch speed reducer is higher and higher. The existing assembly line takes the output gear as a basic part for assembly, and the output gear is directly placed on the assembly line, so that no-load test cannot be carried out after the assembly of the whole machine is finished, and the whole machine detection can only be carried out after the assembly is finished. The offline detection increases production procedures and transfer time, and seriously restricts the improvement of the productivity of the wind power yaw variable pitch speed reducer.

Disclosure of Invention

The disclosure provides a lifter for online detection and an online detection system.

In a first aspect, the present disclosure provides an elevator for online detection, including a frame, a lifting mechanism and a translation mechanism;

the lifting mechanism comprises a lifting part, a vertical guide shaft and a first driving device, the vertical guide shaft is fixedly connected with the rack, the lifting part is connected with the vertical guide shaft in a sliding manner, and the first driving device is used for driving the lifting part to reciprocate along the vertical guide shaft;

the translation mechanism comprises a translation part, a horizontal guide rail and a second driving device, the horizontal guide rail is fixedly connected with the lifting part, the translation part is connected with the horizontal guide rail in a sliding manner, and the second driving device is used for driving the translation part to reciprocate along the horizontal guide rail;

the translation section is used at least in part to lift a target assembly to be inspected.

In some optional embodiments, at least two matching pairs are arranged between the lifting part and each vertical guide shaft, and the at least two matching pairs are separated by a preset distance in the vertical direction.

In some optional embodiments, the lifting portion includes a first plate body, a second plate body and a connecting piece, the connecting piece is respectively fixedly connected with the first plate body and the second plate body, the first plate body and the second plate body are vertically separated by the preset distance, a first matching pair is arranged between the first plate body and the vertical guide shaft, and a second matching pair is arranged between the first plate body and the vertical guide shaft.

In some optional embodiments, a linear bearing is disposed on the first plate, and the linear bearing is sleeved on the vertical guide shaft to form the first mating pair.

In some alternative embodiments, the first drive and/or the second drive is a servo electric cylinder.

In some alternative embodiments, the translating portion is a plate-like structure, one end of the translating portion is used to lift the target component and has a matching-shaped notch of the target component.

In some alternative embodiments, a shock absorbing material is disposed at the gap.

In some alternative embodiments, the surface of the plate-like structure is provided with a reinforcement for increasing the stiffness.

In a second aspect, the present disclosure provides an online detection system, including an assembly line and at least one elevator group, wherein the elevator group includes two elevators for online detection as described in the first aspect of the present disclosure, which are oppositely disposed at two sides of the assembly line.

In some optional embodiments, the first driving devices of the two on-line detection elevators in the elevator group share the same position sensor;

and the second driving devices of the two elevators for online detection in the elevator set share the same position sensor.

The elevator for online detection and the online detection system in the embodiment of the disclosure can achieve the following technical effects:

firstly, the online detection of a target assembly can be realized, the production efficiency of a speed reducer is improved, and the development of the wind power industry is assisted;

secondly, the advantage that the cantilever support does not interfere with the assembly line is kept structurally, and the cantilever support can be directly arranged on two sides of the assembly line;

thirdly, stress concentration caused by cantilever support is avoided in stress, and the service life of the elevator is guaranteed.

Drawings

Other features, objects and advantages of the disclosure will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

fig. 1 is a schematic structural view of a first perspective of an elevator for on-line inspection according to an embodiment of the present disclosure;

fig. 2 is a schematic structural view of a second perspective of an elevator for on-line inspection according to an embodiment of the present disclosure;

fig. 3 is a schematic structural view from a third perspective of an elevator for on-line inspection according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of an online detection system according to an embodiment of the present disclosure;

fig. 5 is a force analysis diagram of an elevator for online inspection according to an embodiment of the present disclosure.

Description of the symbols:

1 lifting plate 2 first guide shaft 3 top plate

4 jack-up roof 5I-steel 6 support roof

7 support bottom plate 8 second guiding axle 9 adjusts lower margin

10 expansion bolts 11 hoisting bottom plate 12 third guide shaft

13 horizontal servo electric cylinder 14 linear guide rail 15 guide shaft support

16 supporting seat 17 vertical servo electric cylinder 18 linear bearing

19 self-adhesion type vibration-damping rubber strip 20 connecting plate 21 supporting plate

22 nut 23 no-load test motor 24 yaw variable pitch speed reducer

25 elevator 26 assembly line

Detailed Description

The present disclosure is described in further detail below with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the related invention are shown in the drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict.

The elevator 25 for on-line detection in the present embodiment includes a frame, an elevating mechanism, and a translating mechanism. The lifting mechanism comprises a lifting part, a vertical guide shaft and a first driving device, the vertical guide shaft is fixedly connected with the rack, the lifting part is connected with the vertical guide shaft in a sliding mode, and the first driving device is used for driving the lifting part to reciprocate along the vertical guide shaft. The translation mechanism comprises a translation part, a horizontal guide rail and a second driving device, the horizontal guide rail is fixedly connected with the lifting part, the translation part is connected with the horizontal guide rail in a sliding mode, and the second driving device is used for driving the translation part to reciprocate along the horizontal guide rail. The translation section is used at least in part to lift the target assembly to be inspected.

In this embodiment, the lifting mechanism may be disposed above, below, inside, etc. the frame. The translation mechanism may be provided on an upper surface, a lower surface, an inside, or the like of the elevating portion.

The elevator 25 for on-line inspection in the present embodiment may be as shown in fig. 1 to 3. The frame can comprise adjusting feet 9, expansion bolts 10, a support bottom plate 7, a first guide shaft 2, a third guide shaft 12, a support top plate 6, a top plate 3, a supporting seat 16, a guide shaft supporting seat 15, connecting bolts of all parts and the like. The elevating part may include the lifting top plate 4, the second guide shaft 8, the lifting bottom plate 11, the guide shaft support 15, and the like. The vertical guide shaft may comprise four first guide shafts 2 or the like. The first drive means may comprise a vertical servo electric cylinder 17 or the like. The translation part can comprise the parts such as the hoisting plate 1, the self-adhesive damping rubber strip 19, the I-steel 5, the support plate 21, the connecting plate 20 and the like. The horizontal guide may comprise a linear guide 14 or the like. The second drive means may comprise parts such as a horizontal servo electric cylinder 13.

The support base plate 7 is supported on the ground by four adjustment feet 9, the adjustment feet 9 are used for adjusting the level of the lifter 25, and five expansion bolts 10 are used for connecting the support base plate 7 and the ground. One ends of the four first guide shafts 2 and the six third guide shafts 12 are fixed to the support base plate 7 through ten guide shaft supports 15. The support top plate 6 is fixed to the other ends of the six third guide shafts 12 through six guide shaft supports 15 and is fixed to the four first guide shafts 2 through four support seats 16. The top plate 3 is fixed to the other ends of the four first guide shafts 2 by four guide shaft supports 15. The frame is fixed and mainly used for supporting the lifting mechanism and the translation mechanism.

Two vertical servo electric cylinders 17 are mounted on the support top plate 6, and the lifting rods thereof are connected to the jack-up top plate 4 through two nuts 22. The jack-up top plate 4 is mounted on the four first guide shafts 2 by means of four linear bearings 18. One ends of four second guide shafts 8 are fixed to the jack-up top plate 4 through four guide shaft supports 15. The lifting bottom plate 11 is fixed to the other ends of the four second guide shafts 8 through four guide shaft supports 15 and is fixed to the four first guide shafts 2 through four linear bearings 18. The lifting plate 1 is mounted on the lifting top plate 4 by means of two linear guides 14. A self-adhesive strip 19 of shock absorbing rubber is mounted on the semicircular notched side of the lifting plate 1. Two I-shaped steel 5 and a supporting plate 21 are arranged on the hoisting plate 1. The horizontal servo electric cylinder 13 is mounted on the jack-up top plate 4, and its lift rod is connected to the support plate 21 through the nut 22 and the connection plate 20. The lifting mechanism and the translation mechanism can realize vertical movement and horizontal movement, and the main function is to complete the lifting of the target assembly.

In this embodiment, the no-load test performed on the rack under the original line is transferred to the assembly line 26, so that the transfer time and the rack tooling of a large number of yaw variable pitch reducers 24 are saved, and the production efficiency is remarkably improved. As shown in fig. 4, when the yaw variable pitch reducer 24 moves to the idle-load test station on the assembly line 26, the lifting plates 1 of the two elevators 25 horizontally move to a designated position, then the lifting part of the elevator 25 integrally moves upward and vertically until the lifting plates 1 lift the yaw variable pitch reducer 24 and separate from the assembly line 26, and at this time, the idle-load test motor 23 is mounted on the yaw variable pitch reducer 24 to perform the idle-load test of the whole machine, including a vibration test, a noise test, and the like. After the no-load test is completed, the lifting parts of the two elevators 25 integrally move downwards and vertically until the lifting plate 1 is separated from the yawing variable-pitch speed reducer 24, then the lifting plate 1 moves horizontally towards the two sides of the assembly line 26 to avoid the area right above the assembly line 26, and the yawing variable-pitch speed reducer 24 returns to the assembly line 26 again and moves to the next station. Both the horizontal and vertical movements of the two elevators 25 are synchronized.

In the aspect of horizontal movement, a PLC (Programmable Logic Controller) controls the horizontal servo electric cylinders 13 of the two elevators 25 to synchronously operate through a pulse command, the lifting rods of the horizontal servo electric cylinders 13 drive the lifting plate 1 to horizontally move on the lifting top plate 4, and the horizontal movement pair between the lifting plate 1 and the lifting top plate 4 is a linear guide rail 14.

In the aspect of vertical movement, the PLC controls the vertical servo electric cylinders 17 of the two elevators 25 to synchronously operate through pulse instructions, the lifting rod of the vertical servo electric cylinder 17 drives the lifting part to vertically move on the rack, and the vertical kinematic pair between the lifting part and the rack is a linear bearing 18.

In this embodiment, the lifter 25 balances the cantilever support moment of the lifting plate 1 by using the reverse moment provided by the second guide shaft 8 and the lifting bottom plate 11, structurally retains the advantage that the cantilever support does not interfere with the assembly line 26, avoids stress concentration generated by the cantilever support in terms of stress, and protects the vertical kinematic pair from being damaged. As shown in fig. 5, the force analysis of the lifting portion is that the vertical downward gravity and the jacking force F of the vertical servo electric cylinder 17 are balanced with each other, the acting force F1 between the linear bearing 18 and the first guide shaft 2 is balanced with each other, and the whole system realizes moment balance by using the jacking force of the vertical servo electric cylinder 17 as a fulcrum.

In this embodiment, the second guide shaft 8 and the lifting bottom plate 11 function to extend the structure of the lifting top plate 4 downward, so that the lifting top plate is changed from a one-dimensional cantilever beam into a two-dimensional F-shaped support beam, and the stress performance is improved. The vertical downward extension of the ceiling plate 4 of the elevator 25 can be any other form of rigid connection, such as welding, shaft hole fitting, screwing, etc., or even a casting directly extending downward. The guide shaft support 15 adopted in the embodiment is a guide shaft standard matching, and the steel plate only needs to be drilled and fixed by bolts, so that the implementation is easier.

In this embodiment, two matching pairs are provided between the lifting portion and each vertical guide shaft, that is, a first matching pair between the lifting bottom plate 11 and the first guide shaft 2, and a second matching pair between the lifting top plate 4 and the first guide shaft 2. The two matching pairs are separated by a preset distance in the vertical direction. In other embodiments, three, four, five, etc. matching pairs may be provided between the lifting portion and each vertical guide shaft, so as to extend the structure of the lifting top plate 4 downward.

In this embodiment, the structural extension direction of the jack-up top plate 4 is vertically downward. In other embodiments, the structure of the jack-up top plate may be extended upward.

In this embodiment, the first fitting pair and the second fitting pair are both the fitting between the linear bearing 18 and the first guide shaft 2, and the friction between the lifting portion and the vertical guide shaft can be effectively reduced. In other embodiments, at least one of the above-mentioned mating pairs may also be a mating between a hole in the plate body and the first guide shaft 2.

In this embodiment, the first driving device and/or the second driving device are servo electric cylinders, and more accurate control accuracy can be realized relative to a hydraulic cylinder.

In this embodiment, the lifting plate 1 is provided with a semicircular notch matched with the shape of the yaw variable pitch speed reducer 24, so that the contact area between the upper surface of the lifting plate 1 and the yaw variable pitch speed reducer 24 can be enlarged, the force applied to the yaw variable pitch speed reducer 24 is uniform, and the lifting process is stable.

In this embodiment, the semicircular gap of the lifting plate 1 is provided with the self-adhesive damping rubber strip 19 made of damping material, so that the situation that the lifting plate 1 collides with the yaw pitch reducer 24 due to misoperation can be avoided.

In this embodiment, the surface of the plate-like structure is provided with a reinforcement for improving rigidity, for example, two i-beams 5, and a support plate 21 are mounted on the lifting plate 1 for improving rigidity of the lifting plate 1. In one example, the maximum deformation of the lifting plate 1 is 0.5-0.8mm without reinforcement. After the rigid reinforcing piece is added, the maximum deformation can be reduced to 0.3-0.4mm, so that the working condition of the hoisting plate 1 is improved, and the service life is prolonged.

The online detection elevator in the embodiment can realize the online detection of the target assembly, improve the production efficiency of the yaw variable pitch speed reducer and assist the development of the wind power industry; the structure keeps the advantage that the cantilever support does not interfere with the assembly line, and the cantilever support can be directly arranged on two sides of the assembly line; stress concentration caused by cantilever support is avoided in stress, and the service life of the lifter is guaranteed.

The present embodiment also provides an on-line inspection system, which includes an assembly line 26 and at least one elevator group, wherein the elevator group includes two elevators 25 for on-line inspection as described above, which are oppositely disposed at two sides of the assembly line 26. As shown in fig. 4, two elevators 25 are oppositely disposed on both sides of the assembly line 26 to form an on-line inspection system. In other embodiments, the number of elevators 25 may be 4, 6, 8, etc., and 2, 3, 4, etc., target assemblies may be tested in-line simultaneously.

In some alternative embodiments, the first driving devices of the two on-line measuring elevators 25 in the elevator group share the same position sensor, and the second driving devices of the two on-line measuring elevators 25 in the elevator group share the same position sensor.

For example, the horizontal servo electric cylinders 13 of the two elevators 25 can share one set of limit sensor and zero sensor, the limit sensor defines the limit position of the horizontal movement, the zero sensor defines the initial position of the horizontal movement, the common set of limit sensor and zero sensor can improve the synchronization precision, the synchronous action of the translation part can reduce the action time, and the test efficiency is improved.

For another example, the vertical servo electric cylinders 17 of the two elevators 25 may share one set of limit sensor and zero sensor, the limit sensor defines the limit position of the vertical movement, the zero sensor defines the initial position of the vertical movement, the common set may improve the synchronization accuracy, and the synchronous action of the elevating part may prevent the target assembly from tipping, thereby improving the safety.

The foregoing description is only exemplary of the preferred embodiments of the disclosure and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention in the present disclosure is not limited to the specific combination of the above-mentioned features, but also encompasses other embodiments in which any combination of the above-mentioned features or their equivalents is possible without departing from the inventive concept as defined above. For example, the above features and (but not limited to) the features disclosed in this disclosure having similar functions are replaced with each other to form the technical solution.

Claims

1. The elevator for online detection is characterized by comprising a rack, a lifting mechanism and a translation mechanism;

2. The on-line detecting elevator according to claim 1, wherein at least two pairs of engaging portions are provided between the elevating portion and each of the vertical guide shafts, and the at least two pairs of engaging portions are spaced apart from each other by a predetermined distance in a vertical direction.

3. The elevator for on-line detection as recited in claim 2, wherein the lifting portion includes a first plate, a second plate and a connecting member, the connecting member is fixedly connected to the first plate and the second plate, the first plate and the second plate are vertically separated by the predetermined distance, a first pair of engaging members is disposed between the first plate and the vertical guide shaft, and a second pair of engaging members is disposed between the first plate and the same vertical guide shaft.

4. The elevator for on-line detection as recited in claim 2, wherein the first plate body is provided with a linear bearing, and the linear bearing is sleeved on the vertical guide shaft to form the first matching pair.

5. The elevator for on-line detection according to claim 1, wherein the first driving device and/or the second driving device is a servo electric cylinder.

6. The elevator for on-line inspection as claimed in any one of claims 1 to 5, wherein the translation portion is a plate-like structure, one end of the translation portion is used for lifting the target assembly and has a notch matching the outer shape of the target assembly.

7. The elevator for on-line inspection according to claim 7, wherein a shock absorbing material is provided at the notch.

8. The elevator for on-line inspection as claimed in claim 7, wherein the surface of the plate-like structure is provided with a reinforcement for improving rigidity.

9. An on-line inspection system comprising an assembly line and at least one elevator group, wherein the elevator group comprises two elevators for on-line inspection according to claim 1 disposed oppositely on both sides of the assembly line.

10. The on-line detection system according to claim 1, wherein the first driving devices of two on-line detection elevators in the elevator group share the same position sensor;