CN210050276U

CN210050276U - High-strength moment arm of speed reducer

Info

Publication number: CN210050276U
Application number: CN201920081077.4U
Authority: CN
Inventors: 陈襄颐; 高东平; 陈强; 张锦; 陈施光; 赵倩茹; 张艺澄; 李梦强
Original assignee: China National Petroleum Corp; China Kunlun Contracting and Engineering Corp
Current assignee: China National Petroleum Corp; China Kunlun Contracting and Engineering Corp
Priority date: 2019-01-18
Filing date: 2019-01-18
Publication date: 2020-02-11
Anticipated expiration: 2029-01-18

Abstract

The utility model relates to a high strength speed reducer moment arm, which comprises a column, the upper end of stand is equipped with coupling mechanism, and the lower extreme is equipped with down coupling mechanism, it all is equipped with spherical joint bearing and hookup support with lower coupling mechanism to go up coupling mechanism, spherical joint bearing's inner circle through the round pin axle with hookup leg joint, fixed mounting has the hookup base plate on spherical joint bearing's the outer lane, the hookup support is equipped with down the hookup base plate, it is located to go up the hookup base plate spherical joint bearing's top, the hookup base plate is located down spherical joint bearing's below, go up coupling mechanism's round pin axle with the equal level of round pin axle of lower coupling mechanism sets up and the different face of each other is perpendicular. The utility model discloses can bear bigger moment and temperature load, reduce extra prestressing force, realize the compensation to installation tolerance and in service the displacement that appears, can extensively be applicable to high temperature area stirring horizontal shaft dress horizontal container and other occasions.

Description

High-strength moment arm of speed reducer

Technical Field

The utility model relates to a high strength speed reducer moment arm relates to machinery especially chemical machinery technical field, can be used to the axle head speed reducer of the horizontal container of high temperature area stirring horizontal axis dress and other suitable occasions.

Technical Field

A horizontal container with a high-temperature stirring horizontal shaft is important equipment in the field of chemical industry. For example, the final polycondensation reactor of a polybutylene succinate (PBS) device is in the form of a horizontal container with a stirring shaft and a disc structure on the shaft, when in production operation, a speed reducer is driven by a motor, and the disc is driven to rotate by the speed reducer, so that a high-level polymer in the reactor is driven to be drawn into a film shape, and the sufficient devolatilization surface area is increased, so that the final polycondensation reaction is smoothly carried out under the conditions of high temperature and high vacuum, and finally, a qualified product is obtained. Therefore, a motor is required to drive the speed reducer to realize stirring, and the speed reducer drives the reactor shaft.

In the field of engineering machinery, a plurality of large-scale equipment need to be driven by a motor to rotate, a single motor has high rotating speed and small torque, and a matched speed reducer is needed for achieving the purposes of reducing the rotating speed and increasing the torque. The speed reducer is a power transmission mechanism, the rotating speed of a motor is reduced to required revolution by utilizing a speed converter of a gear, so that larger torque is obtained, the stirring of a liquid mixture is realized in more occasions, a speed reducer torque arm is matched when a shaft-mounted box type speed reducer is installed, the speed reducer torque arm is used for fixedly supporting one ends of the speed reducer and the motor and providing reverse torque to prevent a power end from rotating along with a shaft, and the torque arm is a common mechanism installed perpendicular to the ground.

The rectangular plate of erectting is adopted to present speed reducer moment arm many, and upper and lower both ends set up the fixed plate, and this kind of moment arm simple structure, with low costs, nevertheless in practical application, exists following not enoughly:

1) the bending-resistant section modulus of the rectangular plate is small, and the rectangular plate is easy to bend in practical application;

2) the lower end and the upper end of the moment arm are fixedly connected with the relevant equipment/foundation, so that additional stress is increased under the condition of temperature load, and the requirement on installation accuracy is high.

The utility model discloses the content:

in order to solve the technical problem that exists among the prior art, the utility model provides a high strength speed reducer moment arm to bear bigger moment and temperature load, reduce extra prestressing force, realize the compensation to installation tolerance and the displacement that appears in service.

The utility model provides a high-strength moment arm of a speed reducer, which comprises a stand column, wherein the upper end of the stand column is provided with an upper connecting mechanism, the lower end is provided with a lower connecting mechanism, the upper connecting mechanism and the lower connecting mechanism are both provided with spherical joint bearings and connecting brackets, the inner rings of the spherical joint bearings are connected with the connecting brackets through pin shafts, an upper connecting base plate is fixedly arranged on the outer ring of the spherical joint bearing, a lower connecting base plate is arranged on the connecting support, the upper connecting base plate is positioned above the spherical joint bearing, the lower connecting base plate is positioned below the spherical joint bearing, the lower connecting base plate of the upper connecting mechanism is fixedly connected with the upper end of the upright post, the upper connecting base plate of the lower connecting mechanism is fixedly connected with the lower end of the upright post, the pin shaft of the upper connecting mechanism and the pin shaft of the lower connecting mechanism are both horizontally arranged and are vertical to each other in different surfaces.

The utility model has the advantages that: because the upper end and the lower end of the upright post are both provided with the connecting mechanisms comprising the spherical joint bearings, and the different surfaces of the pin shafts of the two connecting mechanisms are vertical and can respectively rotate in the radial direction and the axial direction (the radial direction and the axial direction of the speed reducer or the main shaft of the equipment), the thermal expansion generated under different working conditions when the temperature of the equipment rises is effectively avoided, the radial thermal expansion can be absorbed by the upper end connecting part, the axial thermal expansion can be absorbed by the lower end connecting part, and the extra load generated by the radial thermal expansion is avoided; the stand column between the upper connecting mechanism and the lower connecting mechanism is of a round steel pipe structure, and compared with a rectangular plate structure, the bending-resistant cross section modulus is large, so that the capacity of bearing larger bending moment is realized, and the problems that the moment arm of the existing speed reducer is poor in rigidity and equipment is easy to damage in operation from low temperature to high temperature are solved.

The utility model discloses a speed reducer moment arm simple structure can extensively be applicable to the horizontal container of high temperature area stirring horizontal axis dress, has good application prospect in various polymerization plant horizontal reactors.

Drawings

FIG. 1 is a schematic diagram of the present invention in one embodiment;

fig. 2 is a partial sectional view taken along line a in fig. 1.

Detailed Description

Referring to fig. 1, the utility model relates to a high strength speed reducer moment arm, including stand 20, the upper end of stand is equipped with coupling mechanism 10, and the lower extreme is equipped with coupling mechanism 30 down.

The basic configuration of the upper and lower coupling mechanisms may be the same.

Referring to fig. 2, the upper coupling mechanism and the lower coupling mechanism are both provided with a spherical joint bearing and a coupling bracket, an inner ring 4 of the spherical joint bearing is connected with the coupling bracket through a pin 5, an upper coupling base plate 3 is fixedly mounted on an outer ring of the spherical joint bearing, the coupling bracket is provided with a lower coupling base plate 7, the upper coupling base plate is positioned above the spherical joint bearing, and the lower coupling base plate is positioned below the spherical joint bearing.

As shown in fig. 1, the lower connection substrate 17 of the upper connection mechanism is fixedly connected with the upper end of the upright column, the upper connection substrate 33 of the lower connection mechanism is fixedly connected with the lower end of the upright column, and the pin shaft of the upper connection mechanism and the pin shaft of the lower connection mechanism are both horizontally arranged and are perpendicular to each other in different planes.

The post is preferably cylindrical for improved strength.

The upright column can adopt a steel pipe 21.

The lower connecting base plate of the upper connecting mechanism and the upper end of the upright post can be fixedly connected in a welding mode, a flange connection mode or any other suitable mode. The flange connection mode can be as follows: the upper end of the upright post is welded with an upper upright post flange, the lower connecting base plate of the upper connecting mechanism is provided with a flange-shaped outer edge used for realizing the flange connection with the upper upright post flange, and the upper upright post flange and the flange-shaped outer edge of the lower connecting base plate of the upper connecting mechanism are fastened together by bolts and nuts, so that the flange connection between the lower connecting base plate of the upper connecting mechanism and the upper end of the upright post is realized.

The upper connecting base plate of the lower connecting mechanism is fixedly connected with the lower end of the upright column in a welding mode, a flange connection mode or any other suitable mode. The flange connection mode can be as follows: the lower end of the upright post is welded with a lower upright post flange, the upper connecting base plate of the lower connecting mechanism is provided with a flange-shaped outer edge used for realizing the flange connection with the lower upright post flange, and the lower upright post flange and the flange-shaped outer edge of the upper connecting base plate of the lower connecting mechanism are fastened together by bolts and nuts, so that the flange connection between the upper connecting base plate of the lower connecting mechanism and the lower end of the upright post is realized.

According to actual needs, the upper coupling base plate 13 of the upper coupling mechanism may be provided with a connecting structure for mounting a base of the speed reducer, for example, a plurality of screw holes for fastening bolts so as to mount the speed reducer.

The lower coupling base plate 37 of the lower coupling mechanism may be provided with a connecting structure for mounting on a foundation, for example, a plurality of screw holes for fastening bolts, so as to mount the moment arm on the corresponding foundation.

As shown in fig. 2, the connecting brackets of the upper and lower connecting mechanisms are preferably provided with two opposite side plates 6, the lower ends of the side plates are fixedly connected to the lower connecting base plate of the connecting bracket, and the fixed connection between the side plates and the corresponding lower connecting base plate can be realized by any suitable means such as welding or integral molding.

The spherical joint bearing may be generally located between the two side plates, and both ends of the pin shaft are supported on the side plates on the respective sides.

The upper coupling base plate may be generally located above the side plates of the coupling bracket, with upper ends of the side plates being caught below the respective upper coupling base plates.

The side plates are provided with pin shaft through holes for mounting corresponding pin shafts, two ends of each pin shaft respectively penetrate through the pin shaft through holes in the side plates on corresponding sides, and axial limiting of the pin shafts (here, axial of the pin shafts) and/or fixing between the pin shafts and the corresponding side plates are realized through pin shaft limiting and/or fixing structures 2 positioned on the outer sides of the side plates on the corresponding sides.

The spherical joint bearing is preferably a self-lubricating spherical joint bearing.

The outer ring of the spherical joint bearing can comprise an outer ring frame 8 and an inner ring rotating seat 1 fixedly installed in the outer ring frame, so that the processing is convenient and self-lubrication is facilitated.

The inner circle roating seat can be equipped with inner circle sphere complex interior sphere, outer lane frame can be the open rectangular frame in both ends, and wherein the uncovered department of one end is equipped with the interior spacing frame of inside extension, and spacing frame and install and be used for the spacing retaining ring of inner circle in not establishing by the other end, the lateral surface of inner circle roating seat with the medial surface shape of outer lane frame is similar to can paste each other together, be equipped with the sealing washer between inner circle roating seat and the outer lane frame, the sealing washer inlays the dress and is in the outer fringe position of inner circle roating seat and outer lane frame connection face. During assembly, the inner ring is inserted into the outer ring frame from an opening without an inner limiting edge, and a check ring is arranged at the opening of the end to realize the limiting of the inner ring.

Claims

1. A high-strength moment arm of a speed reducer comprises a vertical column, and is characterized in that the upper end of the vertical column is provided with an upper connecting mechanism, the lower end of the vertical column is provided with a lower connecting mechanism, the upper connecting mechanism and the lower connecting mechanism are both provided with spherical joint bearings and connecting brackets, the inner rings of the spherical joint bearings are connected with the connecting brackets through pin shafts, an upper connecting base plate is fixedly arranged on the outer ring of the spherical joint bearing, a lower connecting base plate is arranged on the connecting support, the upper connecting base plate is positioned above the spherical joint bearing, the lower connecting base plate is positioned below the spherical joint bearing, the lower connecting base plate of the upper connecting mechanism is fixedly connected with the upper end of the upright post, the upper connecting base plate of the lower connecting mechanism is fixedly connected with the lower end of the upright post, the pin shaft of the upper connecting mechanism and the pin shaft of the lower connecting mechanism are both horizontally arranged and are vertical to each other in different surfaces.

2. The high strength reducer moment arm of claim 1, characterized in that the upright is cylindrical.

3. The high-strength reducer moment arm according to claim 2, wherein the upright column is made of a steel pipe.

4. The moment arm of a high-strength speed reducer according to claim 1, wherein the fixed connection between the lower connection base plate of the upper connection mechanism and the upper end of the upright is welding or flange connection, when flange connection is adopted, an upper upright flange is welded to the upper end of the upright, the lower connection base plate of the upper connection mechanism is provided with a flange-shaped outer edge for realizing flange connection with the upper upright, and the flange-shaped outer edge of the upper upright flange and the flange-shaped outer edge of the lower connection base plate of the upper connection mechanism are fastened together by bolts and nuts, thereby realizing flange connection between the lower connection base plate of the upper connection mechanism and the upper end of the upright.

5. The high strength reducer moment arm according to claim 4, wherein the upper coupling base plate of the upper coupling mechanism is provided with a connection structure for mounting a reducer base.

6. The moment arm of a high-strength speed reducer according to claim 1, wherein the upper connection base plate of the lower connection mechanism is fixedly connected to the lower end of the upright by welding or flange connection, and when flange connection is adopted, a lower upright flange is welded to the lower end of the upright, the upper connection base plate of the lower connection mechanism is provided with a flange-shaped outer edge for realizing flange connection with the lower upright, and the lower upright flange and the flange-shaped outer edge of the upper connection base plate of the lower connection mechanism are fastened together by bolts and nuts, thereby realizing flange connection between the upper connection base plate of the lower connection mechanism and the lower end of the upright.

7. The high strength reducer moment arm according to claim 6, wherein the lower coupling base plate of the lower coupling mechanism is provided with a connection structure for mounting on a foundation.

8. The moment arm according to any one of claims 1 to 7, wherein the connecting brackets of the upper and lower connecting mechanisms each have two opposite side plates, the lower ends of the side plates are fixedly connected to the lower connecting base plate of the connecting bracket, the spherical plain bearing is located between the two side plates, the two ends of the pin shaft are supported by the side plates on the corresponding sides, and the upper connecting base plate is located above the side plates of the connecting brackets.

9. The moment arm of a high-strength speed reducer according to claim 8, wherein the side plates are provided with pin through holes for mounting corresponding pins, two ends of each pin respectively penetrate through the pin through holes on the side plates on the corresponding sides, and axial limiting of the pin and/or fixation between the pin and the corresponding side plate are realized through pin limiting and/or fixing structures located on the outer sides of the side plates on the corresponding sides.

10. The moment arm according to claim 9, wherein said spherical knuckle bearing outer race comprises an outer race frame and an inner race rotating seat fixedly mounted in said outer race frame, said inner race rotating seat having an inner spherical surface cooperating with said inner race spherical surface.