CN210571100U

CN210571100U - Strain type annular force transducer

Info

Publication number: CN210571100U
Application number: CN201921481959.6U
Authority: CN
Inventors: 陈宇
Original assignee: Shenzhen Main Sensor Technology Co Ltd
Current assignee: Shenzhen Main Sensor Technology Co Ltd
Priority date: 2019-09-06
Filing date: 2019-09-06
Publication date: 2020-05-19
Anticipated expiration: 2029-09-06

Abstract

The utility model discloses a strain type annular force cell sensor, including annular base, T type application of force post and sensor body, the sensor body is fixed to be set up in the upper end of annular base, T type application of force post slides the inner wall setting that runs through annular base and sensor body, the first fixed plate of upper end fixedly connected with of T type application of force post, the lateral wall of first fixed plate is equipped with first venthole, be equipped with the spout on the T type application of force post, be equipped with the fixed establishment that dust removal mechanism and the first fixed plate of cooperation used in the spout, the end of giving vent to anger of dust removal mechanism sets up with fixed establishment intercommunication, the lower extreme of T type application of force post is equipped with a plurality of support components, and is a plurality of support component's lower extreme all offsets the contact with the upper end of sensor body. The utility model discloses a setting of fixed establishment and dust removal mechanism can be with the measured object quilt when fixed, can blow off the dust on the T type application of force post, simple structure and practicality.

Description

Strain type annular force transducer

Technical Field

The utility model relates to a sensor technical field especially relates to a strain type annular force cell sensor.

Background

The sensor is used for measuring strain generated by the deformation of an object under force, and is a sensing element capable of converting the change of strain on a mechanical part into the change of resistance.

The strain type annular force measuring sensor can be used for measuring the gravity of an object, and when the gravity of the object is measured, a device for fixing the object to be measured is lacked, so that the object can be easily moved under the action of the outside, and the measured gravity is inaccurate.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving and can't fix the testee among the prior art for measure very easily unsafe problem, and the annular force cell sensor of strain formula that provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a strain type annular force cell sensor, includes annular base, T type application of force post and sensor body, the sensor body is fixed to be set up in annular base's upper end, the inner wall setting that T type application of force post slided and runs through annular base and sensor body, the first fixed plate of upper end fixedly connected with of T type application of force post, the lateral wall of first fixed plate is equipped with first venthole, be equipped with the spout on the T type application of force post, be equipped with the fixed establishment that dust removal mechanism and the first fixed plate of cooperation used in the spout, the end of giving vent to anger of dust removal mechanism sets up with the fixed establishment intercommunication, the lower extreme of T type application of force post is equipped with a plurality of supporting component, and is a plurality of the lower extreme of supporting component all offsets with the upper end of.

Preferably, the dust removal mechanism is including setting up the gasbag in the spout, the lateral wall intercommunication of gasbag is equipped with bellows and intake pipe, the end of giving vent to anger of bellows sets up with fixed establishment intercommunication, install first one-way pressure valve on the bellows, install second one-way pressure valve in the intake pipe.

Preferably, the fixing mechanism includes a slider arranged in the chute, a second fixing plate is fixedly connected to the upper end of the slider, a second air outlet hole communicated with the bellows is formed in the second fixing plate, a sleeve is rotatably connected to one end, far away from the air bag, of the slider, a threaded rod penetrates through one end, far away from the slider, of the sleeve, and one end, far away from the sleeve, of the threaded rod penetrates through the side wall of the chute and extends to the outside of the chute.

Preferably, the support component comprises an insertion hole arranged at the lower end of the T-shaped force application column, an insertion rod is inserted into the insertion hole, and the lower end of the insertion rod is abutted to the upper end of the sensor body.

Preferably, fixedly connected with telescopic link on the lateral wall of spout, the cover is equipped with the spring on the telescopic link, the both ends of spring respectively with the inner wall of spout and the lateral wall fixed connection of telescopic link.

Preferably, the air outlet end of the corrugated pipe and the air inlet end of the air inlet pipe are both provided with dust screens.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a setting of fixed establishment, the object that will measure gravity is fixed on the post of exerting force of T type, prevents that the object from making the foil gage atress on the sensor body inhomogeneous owing to place the shakiness to this has strengthened the accuracy of sensor measurement.

2. The utility model discloses a dust removal mechanism's setting blows off the dust on the T type application of force post, has prevented the trouble of having avoided artifical clearance T type application of force post, and the blowing of dust also makes the gravity of T type application of force post keep in a comparatively accurate within range for the foil gage atress on the sensor is more accurate, thereby makes measured gravity more accurate.

3. The utility model discloses a support component's setting, when fixed to it before carrying out the dynamometry to the object, T type application of force post does not contact with the foil gage, has guaranteed the accuracy of foil gage atress for measure more accurately.

Drawings

Fig. 1 is a perspective view of a strain gauge annular load cell according to the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a side view of the dust removing mechanism in the strain-type annular force transducer according to the present invention.

In the figure: the device comprises an annular base 1, a 2T-shaped force application column 3, a sensor body 4, a first fixing plate 4, a sliding chute 5, a dust removal mechanism 6, a fixing mechanism 7, a supporting part 8, an air bag 9, a corrugated pipe 10, an air inlet pipe 11, a first one-way pressure valve 12, a second one-way pressure valve 13, a sliding block 14, a second fixing plate 15, a sleeve 16, a threaded rod 17, an insertion hole 18, an insertion rod 19, an expansion rod 20 and a spring 21.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a strain-type annular force transducer includes an annular base 1, a T-shaped force application column 2 and a transducer body 3, the transducer body 3 is fixedly disposed at the upper end of the annular base 1, the T-shaped force application column 2 is slidably disposed through the inner walls of the annular base 1 and the transducer body 3, it should be explained that the T-shaped force application column 2 contacts a strain gauge on the transducer body 3 when sliding downward, so as to deform the strain gauge, and according to the deformation of the strain gauge, the gravity of a measured object is measured, before measurement, the net weight of the T-shaped force application column 2 is measured, so as to measure the actual weight of the measured object, it should be explained that all the above are the prior art, and no description is given here, the upper end of the T-shaped force application column 2 is fixedly connected with a first fixing plate 4, the side wall of the first fixing plate 4 is provided with a first air outlet (not shown in, be equipped with spout 5 on the T type application of force post 2, be equipped with dust removal mechanism 6 and the fixed establishment 7 that the first fixed plate 4 of cooperation used in the spout 5, the end of giving vent to anger of dust removal mechanism 6 sets up with fixed establishment 7 intercommunication, and the lower extreme of T type application of force post 2 is equipped with support component 8, and support component 8's lower extreme offsets with the upper end of sensor body 3 and contacts.

Wherein, dust removal mechanism 6 is including setting up gasbag 9 in spout 5, the lateral wall intercommunication of gasbag 9 is equipped with bellows 10 and intake pipe 11, the end of giving vent to anger of bellows 10 and fixed establishment 7 intercommunication setting, install first one-way pressure valve 12 on the bellows 10, install second one-way pressure valve 13 on the intake pipe 11, it needs to explain, gasbag 9 has elasticity, can not break because by being extruded or being in sufficient state, it needs to explain, set up first one-way pressure valve 12 and make the gas in gasbag 9 only move to the end direction of giving vent to anger of bellows 10 through the inlet end of bellows 10, and blow off from the end of giving vent to anger of bellows 10, set up second one-way pressure valve 13 and make the inlet end of intake pipe 11 inhale external gas into it, and move to gasbag 9, then gas is kept in gasbag 9, so that next use.

Wherein, the fixing mechanism 7 includes a sliding block 14 disposed in the sliding groove 5, the sliding block 14 is slidably disposed in the sliding groove 5, the upper end of the sliding block 14 is fixedly connected with a second fixing plate 15, the second fixing plate 15 is provided with a second air outlet (not shown in the figure) communicated with the bellows 10, it should be explained that the bellows 10 has a telescopic function, and the bellows 10 is always tightly connected with the second air outlet on the side wall of the second fixing plate 15, so that it can be extended and contracted along with the movement of the fixing mechanism 7, and is not separated from the second fixing plate 15, and the top surface of the first air outlet is higher than the second air outlet, and the bottom of the first air outlet is lower than the bottom of the second air outlet, the blown dust is blown out of the T-shaped force application column 2 through the first air outlet, the end of the sliding block 14 away from the air bag 9 is rotatably connected with a sleeve 16, and the end of the sleeve 16 away from the sliding, one end of the threaded rod 17, which is far away from the sleeve 16, penetrates through the side wall of the sliding chute 5 and extends to the outside of the sliding chute, and it should be explained that the threaded rod 17 has a positioning and locking function, so that when the threaded rod 17 does not rotate, the second fixing plate 15 does not move, it should be explained that both the air outlet end of the corrugated pipe 10 and the air inlet end of the air inlet pipe 11 are provided with dust screens, so as to prevent dust from entering the air bag 9 through the air inlet pipe 11 and blowing to the T-shaped force application column 2 through the corrugated pipe 10, wherein the side wall of the sliding chute 5 is fixedly connected with a telescopic rod 20, the telescopic rod 20 is sleeved with a spring 21, both ends of the spring 21 are respectively and fixedly connected with the inner wall of the sliding chute 5 and the side wall of the telescopic rod 20, and it should be explained that the telescopic rod 20 and the spring 21 have a function of limiting the, so that the air bag 9 can only be in an air blowing state when being extruded by the sliding block 14, thereby achieving the effect of dust removal.

Wherein, the support part 8 is including setting up in the jack 18 of T type application of force post 2 lower extreme, and the jack 18 interpolation is equipped with inserted bar 19, and the lower extreme of inserted bar 19 offsets with the upper end of sensor body 3 and contacts, and it needs to explain, sets up jack 18 and inserted bar 19 and be in order when fixed testee for T type application of force post 2 does not contact with the foil gage on the sensor body 3, makes the measured value more accurate when measuring after the testee is fixed to finish.

The utility model discloses in, when needs carry out the dynamometry to the testee, measure T type application of force post 2's original gravity before this, at first rotation threaded rod 17, under the restriction of telescopic link 20 and spring 21, gasbag 9 is extruded by slider 14, gas in the gasbag 9 blows to the up end of T type application of force post 2 through bellows 10, blow off the dust on T type application of force post 2 outside it, then place the testee on T type application of force post 2, reverse rotation threaded rod 17, be fixed in the testee between first fixed plate 4 and the second fixed plate 15, take out inserted bar 19 from jack 18, can measure the gravity of testee.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A strain type annular force transducer comprises an annular base (1), a T-shaped force application column (2) and a transducer body (3), wherein the transducer body (3) is fixedly arranged at the upper end of the annular base (1), the T-shaped force application column (2) is arranged on the inner wall of the annular base (1) and the transducer body (3) in a sliding mode, the strain type annular force transducer is characterized in that a first fixing plate (4) is fixedly connected to the upper end of the T-shaped force application column (2), a first air outlet hole is formed in the side wall of the first fixing plate (4), a sliding groove (5) is formed in the T-shaped force application column (2), a dust removal mechanism (6) and a fixing mechanism (7) matched with the first fixing plate (4) to use are arranged in the sliding groove (5), the air outlet end of the dust removal mechanism (6) is communicated with the fixing mechanism (7), a plurality of supporting components (8) are arranged at the lower end of the T-shaped force application column (, the lower ends of the supporting parts (8) are in contact with the upper end of the sensor body (3) in an abutting mode.

2. The strain type annular force transducer according to claim 1, wherein the dust removing mechanism (6) comprises an air bag (9) arranged in the chute (5), a corrugated pipe (10) and an air inlet pipe (11) are arranged on the side wall of the air bag (9) in a communicating manner, the air outlet end of the corrugated pipe (10) is arranged in a communicating manner with the fixing mechanism (7), a first one-way pressure valve (12) is installed on the corrugated pipe (10), and a second one-way pressure valve (13) is installed on the air inlet pipe (11).

3. The strain ring-shaped force transducer according to claim 2, wherein the fixing mechanism (7) comprises a sliding block (14) arranged in the sliding chute (5), a second fixing plate (15) is fixedly connected to an upper end of the sliding block (14), a second air outlet hole communicated with the corrugated pipe (10) is formed in the second fixing plate (15), a sleeve (16) is rotatably connected to one end, away from the air bag (9), of the sliding block (14), a threaded rod (17) penetrates through a thread at one end, away from the sliding block (14), of the sleeve (16), and one end, away from the sleeve (16), of the threaded rod (17) penetrates through a side wall of the sliding chute (5) and extends to the outside.

4. A strain gauge ring load cell according to claim 3, wherein the support member (8) comprises a socket (18) provided at the lower end of the T-shaped force application column (2), an insert rod (19) is inserted into the socket (18), and the lower end of the insert rod (19) is in abutting contact with the upper end of the sensor body (3).

5. The strain ring type force transducer according to claim 4, wherein the side wall of the chute (5) is fixedly connected with a telescopic rod (20), the telescopic rod (20) is sleeved with a spring (21), and two ends of the spring (21) are respectively fixedly connected with the inner wall of the chute (5) and the side wall of the telescopic rod (20).

6. A strain gauge annular load cell according to claim 5, wherein the air outlet end of the bellows (10) and the air inlet end of the air inlet pipe (11) are provided with dust screens.