CN217560836U

CN217560836U - Force cell sensor adapting to severe working conditions

Info

Publication number: CN217560836U
Application number: CN202221180384.6U
Authority: CN
Inventors: 刘金勇
Original assignee: Ningbo Yinzhou Bohang Electronics Co ltd
Current assignee: Ningbo Yinzhou Bohang Electronics Co ltd
Priority date: 2022-05-17
Filing date: 2022-05-17
Publication date: 2022-10-11
Anticipated expiration: 2032-05-17

Abstract

The utility model discloses a force cell sensor who adapts to abominable operating mode, including force cell sensor and the shell of carrying out sealed protection to force cell sensor, the lower fixed surface of shell is connected with the bottom plate that carries out fixed stay to the shell, the upper surface of shell is run through and the spacing sliding connection of axial has the lift depression bar, the horizontal diaphragm of top fixedly connected with of lift depression bar, the last fixed surface of horizontal diaphragm is connected with the fore-set, the box of placing that places is accomodate to the object that awaits measuring to the top fixedly connected with of fore-set. The utility model discloses, use through the cooperation between the above-mentioned structure, solved in the in-service use, because traditional force cell sensor has the bad condition of protection seal, paste resistance strain gauge on elastic element and strain bonding glue film, all can absorb the moisture in the air and produce the plastify, cause bond strength and rigidity to descend, arouse drift and the irregular change of output, until the problem that force cell sensor became invalid.

Description

Force cell sensor adapting to severe working conditions

Technical Field

The utility model relates to a force cell sensor technical field specifically is a force cell sensor who adapts to abominable operating mode.

Background

The force transducer is a basic mechanical sensor widely applied in the fields of industrial production, military equipment, aerospace, navigation and the like. The measurement principle is mostly based on the technology of the resistance strain gauge, the strain caused by the stress of an elastic body of the resistance strain gauge is converted into the resistance value change of the resistance strain gauge, and then the resistance change is converted into a voltage signal through a Wheatstone bridge. The sensor features include: miniaturization, digitalization, intellectualization, multifunction, systematization and networking. The traditional force cell sensor is a primary link for realizing automatic detection and automatic control, and the wire arrangement is easy to be damaged when in use, so that the wire arrangement is irregular and scattered under the condition that a strain gauge in the sensor arranges the wire. Therefore, a force measuring sensor is provided, for example, a force measuring sensor is provided in chinese patent (patent No. CN213455923U, named force measuring sensor), and includes a sensor mounting plate, a force measuring sensor housing, a force measuring sensor positioning block, an elastic body and a resistance strain gauge, wherein a circle of wire arranging groove is formed in the outer side of the force measuring sensor housing, and is matched with the wire arranging hole, so that the wire arranging rule between the resistance strain gauges in the force measuring sensor is ensured, the fault problem of wire arranging is reduced, the maintenance is facilitated, and the service life is prolonged.

However, in the actual use process, the situation of poor protection and sealing exists, and the resistance strain gauge and the strain adhesive layer which are adhered on the elastic element can absorb moisture in the air to generate plasticization, so that the adhesive strength and the rigidity are reduced, and zero drift and irregular output change are caused until the force measuring sensor fails.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a force cell sensor who adapts to abominable operating mode possesses when guaranteeing the radiating effect, reduces the advantage that equipment received water, has solved the problem among the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a force transducer adaptive to severe working conditions comprises a force transducer and a shell for sealing and protecting the force transducer, wherein the lower surface of the shell is fixedly connected with a bottom plate for fixedly supporting the shell, the upper surface of the shell is penetrated and axially limited and slidably connected with a lifting pressure rod, the top of the lifting pressure rod is fixedly connected with a horizontal transverse plate, the upper surface of the horizontal transverse plate is fixedly connected with a top post, and the top of the top post is fixedly connected with a placing box for containing an object to be measured;

and a pressurizing device for supplementing air in the shell is arranged on the horizontal transverse plate.

Preferably, the pressurizing device comprises a first tube penetrating through the arc-shaped contour of the shell and extending into the shell, a piston plate is axially and slidably connected to the inner wall of the first tube, the lower surface of the horizontal transverse plate is penetrated and fixedly connected with a second tube, a first check valve for guiding outside air into the second tube in a one-way mode is fixedly connected to the inner wall of the second tube close to the bottom, a water absorption sponge cushion for absorbing moisture transferred from the outside into the air in the second tube is fixedly connected to the inner wall of the second tube close to the middle, and a second check valve for guiding the air in the first tube into the shell in a one-way mode is fixedly connected to the inner wall of the first tube close to one end of the shell.

Preferably, one side fixedly connected with of keeping away from the shell on the piston plate advances line location direction and makes the piston plate carry out the auxiliary device that removes to horizontal diaphragm, auxiliary device includes that two symmetries set up the guide arm of putting to one side at horizontal diaphragm lower surface, the below of horizontal diaphragm is equipped with supports two sets of sliding seats of fixing, every group by the outside support the spacing sliding connection of inner wall of sliding seat has the slider, the upper surface of slider is seted up and is supplied to put the guide arm to one side and run through and gliding spout, two the equal fixedly connected with of opposite face and the piston rod that corresponds two fixed connection of check valve of slider.

Preferably, the upper surface of the shell is connected with a third pipe in a penetrating manner, and the inner wall of the third pipe is fixedly connected with a third one-way valve.

Preferably, a return spring is sleeved around the arc-shaped outline of the lifting compression bar, and two ends of the return spring are fixedly connected with the opposite surfaces of the horizontal transverse plate and the shell.

Preferably, the arc-shaped profile of the lifting pressure lever close to the bottom is movably connected with a sealing rubber sleeve, and the bottom of the sealing rubber sleeve is fixedly connected with the upper surface of the shell.

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

1. the utility model arranges the object to be measured on the placing box, the object to be measured is not easy to slide off through the placing box, the lifting pressure rod is moved down and contacted with the force cell through the transmission of the top column, the lifting pressure rod and the lifting pressure rod, and the force cell is realized through the force cell; carry out sealed protection to force cell sensor through the shell, along with the lift of lifting pressure bar in the shell, make in the outside air still probably enters into the shell, moisture that carries in the air of transfer still influences force cell sensor easily, for this reason through pressure device's setting, when lifting pressure bar goes up and down relative shell, just carry out pressurization operation in to the shell, make the directional trend of arranging outward of highly-compressed air, make the moisture in the outside air difficult to enter into the shell, also be difficult to influence force cell sensor's normal stable use.

2. The utility model discloses an auxiliary device's setting can restrict moving down of horizontal diaphragm, makes it move down more stable, and is accompanied with moving down of horizontal diaphragm for two piston plates can be driven and carry out the removal that corresponds.

3. The utility model discloses a cooperation between the above-mentioned structure is used, has solved in the in-service use, because traditional force cell sensor has the bad condition of protection seal, pastes resistance strain gauge and the strain bonding glue film on elastic element, all can absorb the moisture in the air and produce the plastify, causes bond strength and rigidity to descend, arouses drift and the irregular change of output, until the problem that force cell sensor became invalid.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is a front sectional view of the slide block of the present invention;

FIG. 3 is a front cross-sectional view of a first tube of the present invention;

fig. 4 is a cross-sectional view of the jack-post in the axial direction of the present invention.

In the figure: 1. a force sensor; 2. a housing; 3. a base plate; 4. a lifting pressure lever; 5. a horizontal transverse plate; 6. a top pillar; 7. placing the box; 8. a first pipe; 9. a piston plate; 10. a second tube; 11. a one-way valve I; 12. a water-absorbing sponge cushion; 13. a second one-way valve; 14. obliquely arranging a guide rod; 15. a sliding seat; 16. a slider; 17. a chute; 18. a piston rod; 19. a third pipe; 20. a one-way valve III; 21. a return spring; 22. and sealing the rubber sleeve.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example one

The utility model provides a technical scheme: the utility model provides a force cell sensor of adaptation abominable operating mode, includes force cell sensor 1 and carries out the shell 2 of sealed protection to force cell sensor 1, seals protection, its characterized in that to force cell sensor 1 through shell 2: the lower fixed surface of shell 2 is connected with carries out fixed stay's bottom plate 3 to shell 2, the upper surface of shell 2 is run through and the spacing sliding connection of axial has lifting depression bar 4, lifting depression bar 4's top fixedly connected with horizontal diaphragm 5, horizontal diaphragm 5's last fixed surface is connected with fore-set 6, through fore-set 6, lifting depression bar 4 and lifting depression bar 4's transmission, make lifting depression bar 4 move down and contact with force cell sensor 1, realize the dynamometry through force cell sensor 1, the top fixedly connected with of fore-set 6 accomodates the box 7 of placing to the object of awaiting measuring, through placing the object of awaiting measuring on placing box 7, through placing the setting of box 7, make the object of awaiting measuring be measured be difficult for the landing. Along with the lifting of the lifting pressure rod 4 in the shell 2, the outside air can still enter the shell 2, and the moisture carried in the transferred air can still easily influence the force measuring sensor 1, so that the pressure device is arranged, when the lifting pressure rod 4 lifts relative to the shell 2, the pressure operation is carried out in the shell 2, the high-pressure air has the tendency of being discharged outwards, the moisture in the outside air is difficult to enter the shell 2, and the normal and stable use of the force measuring sensor 1 is difficult to influence.

The horizontal plate 5 is provided with a pressurizing device for supplementing air in the casing 2.

Example two

On the basis of the first embodiment, further: pressure device is including running through 2 arc profiles of shell and extending to the pipe 8 in the shell 2, the spacing sliding connection of inner wall axial of pipe 8 has piston plate 9, the lower surface of horizontal diaphragm 5 is run through and fixedly connected with pipe two 10, the inner wall fixedly connected with that is close to the bottom on pipe two 10 is with the one-way leading-in check valve 11 to the pipe two 10 in of outside air, the inner wall fixedly connected with that is close to the middle part on pipe two 10 carries out absorptive sponge pad 12 that absorbs with the moisture that shifts to the pipe two 10 in the air in the outside world, the inner wall fixedly connected with that is close to shell 2 one end on pipe 8 is with the one-way leading-in check valve two 13 to the shell 2 in the pipe 8.

Refer to fig. 1 and 2.

Through the axial reciprocating motion of piston plate 9 in pipe 8, make the volume in pipe 8 the increase and decrease change make the atmospheric pressure in pipe 8 also appear reducing or increasing thereupon, when the atmospheric pressure in pipe 8 reduces, outside air can pass through the bottom of pipe two 10, through one-way upwards exhaust of check valve 11, absorb water sponge pad 12 will enter into the moisture in the air in pipe two 10, the air after removing moisture of department is in pipe one 8 at last, when the internal volume of pipe one 8 diminishes, atmospheric pressure increases, high-pressure gas can enter into in the shell 2 through check valve two 13, increase the atmospheric pressure in pipe one 8, make outside gas difficult to enter into in the shell 2, the gas in the shell 2 can upwards discharge along the gap of the department of running through between lifting pressure pole 4 and shell 2, also can realize the heat transfer in the shell 2.

EXAMPLE III

On the basis of the second embodiment, further: one side fixedly connected with that keeps away from shell 2 on the piston plate 9 advances line location direction and makes the auxiliary device that piston plate 9 moved to horizontal diaphragm 5, through auxiliary device's setting, can restrict moving down of horizontal diaphragm 5, makes it move down more stably, and moves down along with horizontal diaphragm 5 for two piston plates 9 can be driven and carry out corresponding removal.

The auxiliary device comprises two guide rods 14 which are symmetrically arranged on the lower surface of a horizontal transverse plate 5 in an inclined mode, two groups of sliding seats 15 which are fixedly supported by an external support are arranged below the horizontal transverse plate 5, a sliding block 16 is connected to the inner wall of each group of sliding seats 15 in a limiting sliding mode, a sliding groove 17 which is used for the inclined guide rods 14 to run through and slide is formed in the upper surface of the sliding block 16, and piston rods 18 which are fixedly connected with two corresponding check valves 13 are fixedly connected to the opposite surfaces of the two sliding blocks 16.

Refer to fig. 1 and 2.

Through placing box 7, fore-set 6, the lower shift of horizontal diaphragm 5, can make two oblique guide arms 14 of horizontal diaphragm 5 lower surface move down in step, because every group sliding seat 15 restricts corresponding slider 16, make slider 16 can only carry out horizontal spacing slip, when oblique guide arm 14 moves down, under the cooperation of spout 17 on slider 16, can make two sliders 16 carry out the phase to each other simultaneously, and then make pipe 8 internal gas pressure increase, high-pressure gas shifts to in the shell 2, along with the axial spacing slip of piston plate 9 in pipe 8 simultaneously, and the relative slip between slider 16 and the oblique guide arm 14, make horizontal diaphragm 5, fore-set 6 and the lower shift of placing box 7 can be more stable, and can directly arouse the axial slip of corresponding degree piston plate 9 in pipe 8 through the distance of moving down.

Furthermore, a third pipe 19 is connected to the upper surface of the housing 2 in a penetrating manner, and a third check valve 20 is fixedly connected to the inner wall of the third pipe 19.

Referring to fig. 2, through the cooperation of the third pipe 19 and the third check valve 20, when the air in the housing 2 increases and it is difficult for the gap at the through connection between the lifting pressure rod 4 and the housing 2 to transfer the air in time, in order to ensure the stable air pressure in the housing 2, the air in the housing 2 can be discharged out in one way through the third check valve 20.

Furthermore, a return spring 21 is sleeved around the arc-shaped profile of the lifting pressure rod 4, and two ends of the return spring 21 are fixedly connected with the opposite surfaces of the horizontal transverse plate 5 and the shell 2.

Referring to fig. 2, the horizontal cross plate 5 can be accelerated to move upwards for resetting by setting the return spring 21, wherein the influence degree of the elastic force of the return spring 21 on the force measurement is preset, the influence of the elastic force of the return spring 21 on the force measurement process is eliminated, and the accuracy of the force measurement data is ensured. Similarly, the influence of the friction force between the sliding block 16 and the inclined guide rod 14 and the friction force between the sliding seat 15 and the sliding block 16 on the force measurement result is eliminated.

Furthermore, a sealing rubber sleeve 22 is movably connected to the arc-shaped contour of the lifting pressure rod 4 close to the bottom, and the bottom of the sealing rubber sleeve 22 is fixedly connected with the upper surface of the shell 2.

Referring to fig. 2 and 1, the sealing effect of the through connection between the housing 2 and the lifting/lowering rod 4 can be further improved by the provision of the sealing rubber sleeve 22.

The working principle is as follows: when the force cell sensor suitable for severe working conditions is used, an object to be measured is placed on the placing box 7, the placing box 7 is arranged, the object to be measured is not prone to slipping, the lifting pressure rod 4 moves downwards and is in contact with the force cell sensor 1 through transmission of the top column 6, the lifting pressure rod 4 and the lifting pressure rod 4, and force measurement is achieved through the force cell sensor 1; carry out sealed protection to force cell sensor 1 through shell 2, along with the lift of lifting pressure bar 4 in shell 2, make the outside air still probably enter into shell 2 in, the moisture that carries in the air of transfer still influences force cell sensor 1 easily, for this reason, through pressure device's setting, when lifting pressure bar 4 goes up and down relative shell 2, just carry out pressurization operation in to shell 2, make the directional trend of arranging outward of highly-compressed air, make the moisture in the outside air difficult to enter into shell 2, also be difficult to influence the normal stable use of force cell sensor 1.

The utility model discloses an auxiliary device's setting can restrict moving down of horizontal diaphragm 5, makes it move down more stable, and is accompanied with moving down of horizontal diaphragm 5 for two piston plates 9 can be driven and carry out the removal that corresponds.

The utility model discloses a cooperation between the above-mentioned structure is used, has solved in the in-service use, because traditional force cell sensor has the bad condition of protection seal, pastes resistance strain gauge and the strain bonding glue film on elastic element, all can absorb the moisture in the air and produce the plastify, causes bond strength and rigidity to descend, arouses drift and the irregular change of output, until the problem that force cell sensor became invalid.

The standard parts used in the present embodiment may be purchased directly from the market, and the non-standard structural components described in the specification and drawings may be obtained by processing without any doubt according to the common general knowledge in the art, and the connection manner of the respective parts is by the conventional means developed in the art, and the machines, parts and equipment are of the conventional type in the art, so that the detailed description thereof is omitted.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a force cell sensor of adaptation abominable operating mode, includes force cell sensor (1) and carries out sealed shell (2) of protecting to force cell sensor (1), its characterized in that: the lower surface of the shell (2) is fixedly connected with a bottom plate (3) which fixedly supports the shell (2), the upper surface of the shell (2) is penetrated through and is axially and limitedly slidably connected with a lifting compression rod (4), the top of the lifting compression rod (4) is fixedly connected with a horizontal transverse plate (5), the upper surface of the horizontal transverse plate (5) is fixedly connected with a top column (6), and the top of the top column (6) is fixedly connected with a placing box (7) which is used for containing and placing an object to be tested;

and a pressurizing device for supplementing air in the shell (2) is arranged on the horizontal transverse plate (5).

2. The load cell of claim 1, wherein: the pressurizing device comprises a first pipe (8) penetrating through an arc-shaped outline of the shell (2) and extending into the shell (2), a piston plate (9) is axially and slidably connected to the inner wall of the first pipe (8), the lower surface of the horizontal transverse plate (5) penetrates through the second pipe (10) and is fixedly connected with the second pipe (10), a first check valve (11) for guiding outside air into the second pipe (10) in a one-way mode is fixedly connected to the inner wall of the second pipe (10) close to the bottom, a water absorption sponge pad (12) for absorbing water transferred into the air in the second pipe (10) from the outside is fixedly connected to the inner wall of the second pipe (10) close to the middle, and a second check valve (13) for guiding the air in the first pipe (8) into the shell (2) in a one-way is fixedly connected to the inner wall of the first pipe (8) close to one end of the shell (2).

3. The load cell of claim 2, wherein: keep away from one side fixedly connected with of shell (2) on piston plate (9) and fix a position the direction and make piston plate (9) carry out the auxiliary device that removes to horizontal diaphragm (5), auxiliary device includes that two symmetries set up put guide arm (14) to one side at horizontal diaphragm (5) lower surface, the below of horizontal diaphragm (5) is equipped with supports two sets of sliding seats (15) of fixing by the outer support, every group the spacing sliding connection of inner wall of sliding seat (15) has slider (16), the upper surface of slider (16) is seted up and is supplied to put guide arm (14) to one side and run through and gliding spout (17), two the equal fixedly connected with of opposite face of slider (16) and piston rod (18) that correspond two (13) fixed connection of check valve.

4. The load cell of claim 3, wherein: the upper surface of the shell (2) is connected with a third pipe (19) in a penetrating mode, and the inner wall of the third pipe (19) is fixedly connected with a third one-way valve (20).

5. The load cell of claim 1, wherein: a return spring (21) is sleeved around the arc-shaped outline of the lifting compression bar (4), and two ends of the return spring (21) are fixedly connected with the opposite surfaces of the horizontal transverse plate (5) and the shell (2).

6. The load cell of claim 1, wherein: the lifting pressure lever (4) is movably connected with a sealing rubber sleeve (22) on the arc-shaped outline close to the bottom, and the bottom of the sealing rubber sleeve (22) is fixedly connected with the upper surface of the shell (2).