CN102840977A

CN102840977A - Loading sensor

Info

Publication number: CN102840977A
Application number: CN2012103048056A
Authority: CN
Inventors: 樊琳; 吕宁; 樊世耀; 梁新文
Original assignee: SHANXI PROVINCE PINGYAO REDUCER CO Ltd
Current assignee: SHANXI PROVINCE PINGYAO REDUCER CO Ltd
Priority date: 2012-08-25
Filing date: 2012-08-25
Publication date: 2012-12-26
Anticipated expiration: 2032-08-25
Also published as: CN102840977B

Abstract

The invention discloses a loading sensor which solves problems that a conventional loader cannot be loaded or lightened freely so as to ensure that a load is kept stable, and a moment and a rotation speed cannot be measured in real time. The loading sensor comprises a box body, wherein a shared star frame disc is arranged inside the box body; a shared planet shaft and an input solar wheel shaft and an output solar wheel shaft are arranged on the shared star frame disc; the input solar wheel shaft and the output solar wheel shaft are sleeved at left and right sides; an output solar wheel is fixed on the output solar wheel shaft; a loading planet wheel is arranged on the shared planet shaft; a sensing planet wheel is sleeved on the shared planet shaft; a sensing internal gear is sleeved outside the sensing planet wheel; a fixing disc is arranged outside the sensing internal gear; a moment sensor is fixed on the fixing disc; a loading internal gear is sleeved outside the loading planet wheel; a worm wheel is arranged outside the loading internal gear; a worm is meshed with the worm wheel; a brake motor is connected with the worm; and a rotation speed sensor is arranged around the output solar wheel shaft. A loading moment and the rotation speed can be measured while inorganic loading is realized; and the loading sensor has the advantages of loading sensitivity, stability and simple structure.

Description

Load sensor

Technical field

The present invention relates to load sensing device, be specially the totally-enclosed testing table of a kind of MW class mechanical output and use load sensor.

Background technology

The totally-enclosed testing table of mechanical output; Be applicable to that mechanical processing industry carries out the strength of gear teeth to MW class gear case, wheel box, speed reduction unit; The test in gear case life-span, energy-saving effect are very outstanding, can do type approval test, delivery test, strength test and fatigue life test.

The core of the totally-enclosed testing table of MW class mechanical output is a load sensor.The totally-enclosed testing table of MW class mechanical output comprises the main examination speed reduction unit that connects through shaft coupling and accompanies the examination speed reduction unit at present; Main examination input shaft of speed reducer connects through input pickup and gear case; Gear case connects through load sensor and gear case; Gear case and output transducer connect, and output transducer tries the speed reduction unit connection with accompanying, thereby forms a mechanical close system.

During work, when main examination speed reduction unit rotates, accompany the examination speed reduction unit and then to rotate, motor is kept the loading procedure loss through an axle intake of gear case, and load sensor is connected on the axle of two gear casees, and load sensor loads closed system.

Mostly loader is internal force type loader and external force type loader, above-mentioned loader all can not behind motor starting, satisfy in the MW class scope any time free loading or off-load and guarantee load stable with the moment requirement that measurement is in real time come out with rotating speed.

Summary of the invention

The present invention can't free loading, off-load in order to solve existing loader, assurance load is stable and can't measure the problem of moment and rotating speed in real time, and a kind of load sensor is provided.

The present invention adopts following technical scheme to realize: load sensor, comprise casing, and be provided with shared star frame dish in the casing; Shared star frame dish is provided with input sun wheel shaft, the output sun wheel shaft of shared planet axis and left and right sides socket; Be fixed with the output sun gear on the output sun wheel shaft, shared planet axis is provided with and exports the load rows star-wheel of sun gear engagement, and is with and imports the sensing planetary gear of sun wheel shaft engagement on the shared planet axis; The sensing planetary gear is with the sensing annular wheel with its engagement outward; The sensing annular wheel is outside equipped with and the fixing shaft collar of casing, is fixed with torque sensor on the shaft collar, and the load rows star-wheel is with the loading annular wheel with its engagement outward; The loading annular wheel is provided with the worm gear with its engagement outward; Be engaged with worm screw on the worm gear, be connected with braking motor through speed reduction unit on the worm screw, be provided with around the output sun wheel shaft and the fixing speed probe of casing.

Realize loading at any time, off-load and guarantee the requirement that load is stable through braking motor and speed reduction unit; Through the requirement of torque sensor realization extraction torque, the requirement that realizes extracting rotating speed through speed probe.

During operation, the totally-enclosed testing table of MW class mechanical output passes to the input sun wheel shaft with revolving force through shaft coupling, and the input sun wheel shaft drives the sensing planetary gear and carries out rotation and revolution, and shaft collar and sensing annular wheel are fixing not to rotate; The sensing planetary gear drives load rows star-wheel rotation and revolution; And then the output sun gear of drive and the engagement of load rows star-wheel and the rotation of output sun wheel shaft, torque sensor on the shaft collar and the axial speed probe of output sun gear extract the torque and the rotating speed of testing table respectively; In the load sensor operation process; Rotate through braking motor and speed reduction unit control worm screw; And then drive worm gear, loading annular wheel, load rows star-wheel, output sun gear and export the sun wheel shaft rotation; Realize free loading, the off-load of loader and guarantee the requirement that load is stable, realize measuring in real time the requirement of moment and rotating speed simultaneously.

Reasonable in design of the present invention is reliable, when can realize several kilowatts of inorganic loadings to several megawatts, can measure loading moment size and rotating speed; Loading procedure does not have the restriction of stroke, and the gap that each connecting link produces in closed system is in the multistage transmission by the examination speed reduction unit particularly; Backlash at different levels all can be eliminated; Thereby can guarantee the smooth loading in the one-step installation, have the sensitivity of loading, stable, advantage of simple structure, be particularly suitable for megawatt mechanical output blocking test platform.

Description of drawings

Fig. 1 is a structural representation of the present invention.

Among the figure: the 1-casing, the shared star frame of 2-dish, the shared planet axis of 3-, 4-imports sun wheel shaft; 5-exports sun wheel shaft, and 6-exports sun gear, 7-load rows star-wheel, 8-sensing planetary gear; 9-sensing annular wheel, 10-shaft collar, 11-torque sensor; 12-loads annular wheel, 13-speed probe, 14-worm screw.

Embodiment

Load sensor comprises casing 1, is provided with shared star frame dish 2 in the casing 1; Shared star frame dish 2 is provided with input sun wheel shaft 4, the output sun wheel shaft 5 of shared planet axis 3 and left and right sides socket; Be fixed with output sun gear 6 on the output sun wheel shaft 5, shared planet axis 3 is provided with and exports the load rows star-wheel 7 of sun gear 6 engagements, and is with and imports the sensing planetary gear 8 of sun wheel shaft 4 engagements on the shared planet axis 3; Be with sensing annular wheel 9 outside the sensing planetary gear 8 with its engagement; Sensing annular wheel 9 is outside equipped with the shaft collar of fixing with casing 1 10, is fixed with torque sensor 11 on the shaft collar 10, is with the loading annular wheel 12 with its engagement outside the load rows star-wheel 7; Load the worm gear that is provided with outside the annular wheel 12 with its engagement; Be engaged with worm screw 14 on the worm gear, be connected with braking motor through speed reduction unit on the worm screw 14, be provided with the speed probe of fixing with casing 1 13 around the output sun wheel shaft 5.

In the practical implementation process, input sun wheel shaft 4 all is connected to closed system through shaft coupling and testing table with the outer end of output sun gear 6.

Claims

1. load sensor; It is characterized in that: comprise casing (1); Be provided with shared star frame dish (2) in the casing (1), shared star frame dish (2) is provided with input sun wheel shaft (4), the output sun wheel shaft (5) of shared planet axis (3) and left and right sides socket, is fixed with output sun gear (6) on the output sun wheel shaft (5); Shared planet axis (3) is provided with and exports the load rows star-wheel (7) of sun gear (6) engagement; And be with and import the sensing planetary gear (8) of sun wheel shaft (4) engagement on the shared planet axis (3), sensing planetary gear (8) is with the sensing annular wheel (9) with its engagement outward, and sensing annular wheel (9) is outside equipped with and the fixing shaft collar (10) of casing (1); Be fixed with torque sensor (11) on the shaft collar (10); Load rows star-wheel (7) is with the loading annular wheel (12) with its engagement outward, loads the worm gear that is provided with outside the annular wheel (12) with its engagement, is engaged with worm screw (14) on the worm gear; Worm screw (14) goes up and is connected with braking motor through speed reduction unit, and output sun wheel shaft (5) is provided with and the fixing speed probe (13) of casing (1) on every side.