阅读说明：本技术 一种测力仪及显示方法 (Dynamometer and display method ) 是由 方彦彦 于 2021-08-19 设计创作，主要内容包括：本发明涉及侧力仪器技术领域,公开了一种测力仪及显示方法,包括本体,本体上设置有壳体,壳体的下端与本体螺纹连接,壳体的上端固定有与本体螺纹连接的连接件；壳体内设置有弹簧,弹簧一端固定在壳体上,弹簧的另一端固定有与壳体竖向滑动配合的连接块,连接块上螺纹连接有拉动部；连接件可拆卸连接有转动部,转动部上螺纹连接有悬挂部,悬挂部与本体竖向滑动配合。本发明结构简单,以延长弹簧测力仪的使用寿命,提高弹簧测力仪的安装便捷性,提高弹簧测力仪的测力精度。(The invention relates to the technical field of lateral force instruments and discloses a dynamometer and a display method, wherein the dynamometer comprises a body, a shell is arranged on the body, the lower end of the shell is in threaded connection with the body, and a connecting piece in threaded connection with the body is fixed at the upper end of the shell; a spring is arranged in the shell, one end of the spring is fixed on the shell, the other end of the spring is fixed with a connecting block which is vertically matched with the shell in a sliding manner, and a pulling part is connected to the connecting block in a threaded manner; the connecting piece can be dismantled and be connected with rotation portion, and threaded connection has the portion of hanging in the rotation portion, the portion of hanging and the vertical sliding fit of body. The spring dynamometer provided by the invention has a simple structure, so that the service life of the spring dynamometer is prolonged, the installation convenience of the spring dynamometer is improved, and the force measurement precision of the spring dynamometer is improved.)

1. A force gauge, characterized by: the device comprises a body, wherein a shell is arranged on the body, the lower end of the shell is in threaded connection with the body, and a connecting piece in threaded connection with the body is fixed at the upper end of the shell;

a spring is arranged in the shell, one end of the spring is fixed on the shell, the other end of the spring is fixed with a connecting block which is vertically matched with the shell in a sliding manner, and a pulling part is connected to the connecting block in a threaded manner;

the connecting piece can be dismantled and be connected with rotation portion, and threaded connection has the portion of hanging in the rotation portion, the portion of hanging and the vertical sliding fit of body.

2. The load cell of claim 1, wherein: a cavity is formed between the hanging part and the body, a sucker is fixed on the body, and an air passage communicated with the sucker and the cavity is formed in the body.

3. The load cell of claim 1, wherein: the device also comprises an A/D digital-to-analog converter, a display and a measuring circuit, wherein when the force is measured, the measuring circuit inputs current to the A/D digital-to-analog converter, and the force measurement value is displayed through the display.

4. The load cell of claim 3, wherein: the measuring circuit comprises a storage battery, an on-off switch and a slide rheostat, the storage battery, the on-off switch and the slide rheostat form a closed loop, a shifting lever of the slide rheostat is horizontally connected with a connecting block in a sliding mode, the shifting lever comprises a conductive portion and an insulating portion, one end, far away from the conductive portion, of the insulating portion is an inclined plane, an elastic piece is sleeved on the insulating portion, one end of the elastic piece is fixedly connected with the connecting block, and the other end of the elastic piece is fixedly connected with the insulating portion.

5. The load cell of claim 4, wherein: the tension sensor is electrically connected with a controller, and the controller is electrically connected with the display;

the tension sensor acquires tension information, the controller sends display information to the display based on the tension information, and the display displays numerical values.

6. The load cell of claim 5, wherein: the controller is electrically connected with an alarm, the controller judges whether the tension of the spring exceeds a preset value or not based on tension information, when the tension exceeds the preset value, the controller controls the alarm to work, when the tension does not exceed the preset value, the controller sends display information to the display, and the display displays the tension value.

7. The method of displaying a load cell of claim 6, wherein: comprises the following steps of (a) carrying out,

s1: disconnecting the power supply of the measuring circuit and driving the pulling part to move downwards;

s2: recording the numerical value on the display, then loosening the pulling part, and waiting for the display to display the numerical value as zero;

s4: the power supply of the controller is cut off, and the pulling part is driven to move downwards;

s5: and recording the numerical value on the display, then releasing the pulling part, and waiting for the display to display the numerical value as zero.

8. The method of displaying a load cell of claim 6, wherein: comprises the following steps of (a) carrying out,

s1: the pulling part is driven to move downwards for a certain distance;

s2: when the pulling part slides downwards, the pulling force information of the spring is obtained through the pulling force sensor, the pulling force information is transmitted to the controller, and a first numerical value is displayed through the display;

s3: when the pulling part slides downwards, the deflector rod slides downwards, the A/D converter inputs current, and a second numerical value is displayed through the display;

s4: comparing the first value with the second value, wherein the first value is the final display value when the difference between the first value and the second value is +/-0.01 to +/-0.05.

Technical Field

The invention relates to the technical field of lateral force instruments, in particular to a dynamometer and a display method.

Background

A force gauge (dynameter) is a portable measuring instrument for measuring various force values or loads, and a spring force gauge is one of the force gauges.

In the prior art, when a spring dynamometer measures the magnitude of force, a heavy object needs to be hung on a hook and a tension spring in the spring dynamometer is pulled to deform the spring dynamometer, so that after the spring dynamometer is used for a period of time, the tension spring in the spring dynamometer generates a deformation error which is difficult to recover, and the accuracy is reduced when the magnitude of the force is measured; when the spring dynamometer is not used (generally, the spring dynamometer is vertically placed), the hook is always hung on the spring dynamometer, so that a spring of the spring dynamometer is always in a certain working state, and the service life of the spring dynamometer is shortened.

Disclosure of Invention

The invention aims to provide a dynamometer so as to solve the problem that the service life of the existing spring dynamometer is short.

In order to achieve the purpose, the invention adopts the following technical scheme: a dynamometer comprises a body, wherein a shell is arranged on the body, the lower end of the shell is in threaded connection with the body, and a connecting piece in threaded connection with the body is fixed at the upper end of the shell;

a spring is arranged in the shell, one end of the spring is fixed on the shell, the other end of the spring is fixed with a connecting block which is vertically matched with the shell in a sliding manner, and a pulling part is connected to the connecting block in a threaded manner;

the connecting piece can be dismantled and be connected with rotation portion, and threaded connection has the portion of hanging in the rotation portion, the portion of hanging and the vertical sliding fit of body.

The principle and the advantages of the scheme are as follows: (1) in this scheme, casing and body threaded connection can be dismantled the casing from the body promptly, the installation of the casing of being convenient for on the one hand, the dismantlement of the casing of being convenient for on the other hand. In this scheme, fixed connecting piece also carries out threaded connection with the body on the casing, and then the casing is connected from a plurality of positions, has improved the connection stability of casing and body.

(2) In this scheme, pulling portion and connecting block threaded connection, when the dynamometer was vertical to be placed, with pulling portion and connecting block separation to reduce the effort that the spring received, prolonged the life-span of spring.

(3) In this scheme, when installing the casing, need rotate the casing, the casing can drive the rotation portion and rotate, and rotation portion drives the vertical slip of linkage, and then linkage stretches out from the body, and the fixed part of dynamometer can be regarded as to the linkage, also can regard as operating personnel's the part of gripping. When the shell is detached from the body, the suspension part is contracted onto the body, so that the area of the dynamometer can be reduced, and the dynamometer is convenient to place.

Preferably, as an improvement, a cavity is formed between the hanging part and the body, a sucker is fixed on the body, and an air passage communicated with the sucker and the cavity is arranged on the body.

Has the advantages that: in this scheme, when the linkage stretches out from the body, can make the cavity form certain suction, and then siphons away the gas in the sucking disc through the air flue to the dynamometer of being convenient for is installed on the wall body, and the dynamometer of being convenient for is placed. Compared with the existing placement mode (the hooks are arranged on the wall body), the damage to the wall body can be reduced.

Preferably, as an improvement, the device further comprises an a/D digital-to-analog converter, a display and a measuring circuit, when the force measurement is performed, the measuring circuit inputs current to the a/D digital-to-analog converter, and the display displays the force measurement value.

Has the advantages that: in the process that the pulling part slides downwards, the current of the measuring circuit is input into the A/D digital-to-analog converter, and the force measuring value is displayed through the display.

Preferably, as an improvement, the measuring circuit includes storage battery, on-off switch and slide rheostat, and storage battery, on-off switch and slide rheostat constitute closed circuit, and slide rheostat's driving lever and connecting block horizontal sliding connection, driving lever include conductive part and insulating part, and the one end that the conductive part was kept away from to the insulating part is the inclined plane, and the cover is equipped with the elastic component on the insulating part, and elastic component one end and connecting block fixed connection, the other end and the insulating part fixed connection of elastic component.

Has the advantages that: when the pulling part is installed on the connecting block, the pulling part moves the poking rod towards the resistor so that the sliding rheostat can work, the connecting block and the poking rod can be driven to slide downwards when the pulling part slides downwards, the resistor is further increased, and the current of the measuring circuit is input to the A/D digital-to-analog converter so as to display the force measurement value of the force measuring instrument.

Preferably, as an improvement, the device further comprises a tension sensor, wherein the tension sensor is electrically connected with a controller, and the controller is electrically connected with the display; the tension sensor acquires tension information, the controller sends display information to the display based on the tension information, and the display displays numerical values.

Preferably, as an improvement, the controller is electrically connected with an alarm, the controller judges whether the tension of the spring exceeds a preset value or not based on the tension information, when the tension exceeds the preset value, the controller controls the alarm to work, when the tension does not exceed the preset value, the controller sends display information to the display, and the display displays the tension value.

Preferably, as a modification, S1: disconnecting the power supply of the measuring circuit and driving the pulling part to move downwards;

s2: recording the numerical value on the display, then loosening the pulling part, and waiting for the display to display the numerical value as zero;

s4: the power supply of the controller is cut off, and the pulling part is driven to move downwards;

s5: and recording the numerical value on the display, then releasing the pulling part, and waiting for the display to display the numerical value as zero.

Has the advantages that: when the force is measured, the force is measured through two paths, and the two groups of values are compared, so that the force measurement accuracy is improved, an operator can observe conveniently, and the operator can obtain an accurate value conveniently.

Further, S1: the pulling part is driven to move downwards for a certain distance;

s2: when the pulling part slides downwards, the pulling force information of the spring is obtained through the pulling force sensor, the pulling force information is transmitted to the controller, and a first numerical value is displayed through the display;

s3: when the pulling part slides downwards, the deflector rod slides downwards, the A/D converter inputs current, and a second numerical value is displayed through the display;

s4: comparing the first value with the second value, wherein the first value is the final display value when the difference between the first value and the second value is +/-0.01 to +/-0.05.

Has the advantages that: the force measuring sensor and the measuring circuit are used for synchronous measurement, and the final result is synchronously displayed, so that the comparison by an operator is facilitated, and an accurate value is obtained.

Drawings

Fig. 1 is a schematic structural view of a load cell according to a first embodiment of the present invention.

Fig. 2 is a schematic structural view of a load cell according to a second embodiment of the present invention.

Fig. 3 is a schematic structural view of a load cell according to a third embodiment of the present invention.

Fig. 4 is a schematic structural view of a force measuring device according to a fourth embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments:

reference numerals in the drawings of the specification include: the device comprises a body 11, a shell 12, a hanging part 13, a rotating part 14, a connecting shaft 15, a screw 16, a spring 17, a connecting block 18, a pulling part 19, a cavity 21, an air channel 22, a suction cup 23, an insulating part 31, a conductive part 32, a switch 33 and a slide rheostat 34.

The first embodiment is as follows:

as shown in fig. 1, the force measuring instrument comprises a body 11, a rotating part 14 is rotatably connected to the body 11, a hanging part 13 in an inverted U shape is in threaded connection with the rotating part 14, and the hanging part 13 is in vertical sliding fit with the body 11. The upper end of the shell 12 is connected with the body 11 through the screw 16 in a threaded manner, the rotating shaft is detachably connected with the rotating part 14, and the rotating part 14 is in friction fit with the connecting shaft 15.

The lower end of the shell 12 is in threaded connection with the body 11, the lower portion of the shell 12 is open, a spring 17 is arranged in the shell 12, one end of the spring 17 is fixed on the shell 12, the other end of the spring 17 is fixed with a connecting block 18 which is in vertical sliding connection with the shell 12, and a pulling portion 19 is in threaded connection with the connecting block 18.

The specific implementation process is as follows:

in this embodiment, two positions of casing 12 are located body 11 threaded connection, have improved the stability of casing 12 installation, and the casing 12 of also being convenient for simultaneously is dismantled to maintain the spring 17 in the body 11, can improve the life of spring 17, the change of the spring 17 of also being convenient for of course.

When installing casing 12, rotatory installing casing 12 on body 11 promptly, at rotatory in-process, connecting axle 15 can stretch into in the portion 14 that rotates to drive portion 14 and rotate, portion 14 that rotates drives suspension portion 13 and upwards slides on body 11, and then suspension portion 13 stretches out from body 11, and the operating personnel of being convenient for holds or hangs the dynamometer.

In this embodiment, when hanging the dynamometer, dismantle pulling part 19, can reduce the vertical effort to spring 17 under the vertical state, reduce the probability that spring 17 takes place deformation, prolong spring 17's life.

A protection cavity is formed between the body 11 and the shell 12, and in the actual use process, when the dynamometer is impacted, certain buffering can be performed, so that the function of protecting the spring 17 is achieved, and the dynamometer can be normally used.

Example two:

the difference between the second embodiment and the first embodiment is that, as shown in fig. 2, a cavity 21 is formed between the suspension part 13 and the body 11, the body 11 is provided with an air passage 22 communicated with the cavity 21, the body 11 is provided with a suction cup 23, and the suction cup 23 is communicated with the cavity 21 through the air passage 22.

When needing to hang the dynamometer, operating personnel can directly rotate rotation portion 14, and rotation portion 14 drives suspension portion 13 and upwards slides, and suspension portion 13 upwards slides in-process, can make cavity 21 form certain suction, and then takes away the gas in sucking disc 23 to improve sucking disc 23's adsorption, be convenient for place the dynamometer on the wall body, through the installation of adsorption mode, avoid setting up the couple on the wall body again.

Example three:

the third embodiment is different from the first embodiment in that, as shown in fig. 3, in the present embodiment, an a/D digital-to-analog converter, a display and a measurement circuit are disposed on the body 11.

The measuring circuit comprises a storage battery, an on-off switch 33 and a slide rheostat 34, the storage battery, the on-off switch 33 and the slide rheostat form a closed circuit, and a poking rod of the slide rheostat 34 is installed on the connecting block 18 in the embodiment, specifically: the deflector rod comprises a conductive part 32 and an insulating part 31, the conductive part 32 is located at one end close to the resistance of the sliding rheostat 34, the insulating part 31 is located at one end close to the pulling part 19, an elastic part is sleeved outside the insulating part 31, the elastic part is a return spring 17 in the embodiment, one end of the return spring 17 is fixed on the connecting block 18, the other end of the return spring 17 is fixed on the insulating part 31, and an inclined surface is arranged at one end, far away from the conductive part 32, of the insulating part 31.

In specific use, when the pulling part 19 is mounted on the connecting block 18, the insulating part 31 and the conductive part 32 are pushed to slide to the left, and the conductive part 32 and the uppermost end of the resistance of the sliding rheostat 34 are pushed. When the force is measured, the on-off switch 33 is opened, the storage battery pack, the slide rheostat 34 and the A/D digital-to-analog converter form a passage, and the force measurement value displayed on the display is as follows: 0.

when the operator slides the connecting block 18 and the spring 17 downwards through the pulling part 19, the conductive part 32 slides downwards to change the resistance value of the slide rheostat 34, further change the current value of the channel, input the current to the A/D converter, and display the force measurement value on the display, for example: 1/2/3, etc.

Example four:

the fourth embodiment is different from the third embodiment in that the fourth embodiment further comprises a controller, the controller is electrically connected with a tension sensor, the tension sensor is mounted on the shell 12, the controller is electrically connected with an alarm mounted on the body 11, and the alarm is a buzzer.

In this embodiment, when spring 17 receives the pulling force, force sensor acquires the pulling force information to with pulling force information transmission to the controller, the controller judges based on the pulling force information, if the pulling force numerical value is greater than the controller and presets numerical value (like 50N), the controller can send alarm work information, the alarm obtains work information after, alarm work. If the tension value is smaller than the preset value of the controller, the controller sends a current signal to the A/D digital-to-analog converter, and the A/D digital-to-analog converter enables the display to display the force measurement value.

In this embodiment, the display displays a force measurement value measured in the measurement circuit and also displays a force measurement value converted from the tension information acquired by the tension sensor, the two values are compared or averaged to obtain a final force measurement value, and the two values are compared, so that the accuracy of force measurement of the force measuring instrument is improved.

Example five:

a display method of a force gauge, comprising the steps of, S1: the power supply of the measuring circuit is disconnected, and the pulling part 19 is driven to move downwards;

s2: recording a first numerical value on the display, then releasing the pulling part 19, and waiting for the display to display the numerical value as zero;

s4: the power supply of the controller is cut off, and the pulling part 19 is driven to move downwards;

s5: a second value on the display is recorded and then the pull 19 is released and the display waits for the value to be zero.

In the embodiment, the force measurement is performed in two ways, and the two-time force measurement results are displayed, so that an operator can conveniently obtain force measurement information in different ways, and then average values are obtained or whether the force measurement results at two sides are basically the same or not is verified, or the force measurement is more accurate within an error value, namely, the force measurement accuracy is improved. Of course, if either the tension sensor or the measuring circuit is damaged, the used part can be used for measuring the force.

Example six:

a display method of a force gauge, comprising the steps of, S1: the pulling part 19 is driven to move downwards for a certain distance;

s2: when the pulling part 19 slides downwards, the pulling force information of the spring 17 is obtained through the pulling force sensor, the pulling force information is transmitted to the controller, and a first numerical value is displayed through the display;

s3: when the pulling part 19 slides downwards, the deflector rod slides downwards, the A/D converter inputs current, and a second numerical value is displayed through the display;

s4: comparing the first value with the second value, wherein the first value is the final display value when the difference between the first value and the second value is +/-0.01 to +/-0.05.

In the embodiment, the two force measurement values are synchronously displayed, so that an operator can conveniently obtain a final force measurement result, and the force measurement precision is improved.

The foregoing is merely an example of the present invention and common general knowledge in the art of designing and/or characterizing particular aspects and/or features is not described in any greater detail herein. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several variations and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.