CN111537128B

CN111537128B - Tension dynamometer

Info

Publication number: CN111537128B
Application number: CN202010260850.0A
Authority: CN
Inventors: 阮卜琴; 牛胜良
Original assignee: Zhejiang Topsun Logistic Control Co Ltd
Current assignee: Zhejiang Topsun Logistic Control Co Ltd
Priority date: 2020-04-03
Filing date: 2020-04-03
Publication date: 2022-06-21
Anticipated expiration: 2040-04-03
Also published as: CN111537128A

Abstract

The invention provides a tension dynamometer, and belongs to the technical field of cargo binding equipment. It has solved the technical problem of current tension dynamometer troublesome poeration. The tension dynamometer comprises a base body through which a binding belt can penetrate, and a belt pressing base which can be pressed against the binding belt and enables the binding belt to be bent in the base body is arranged on the base body. The invention does not need additional actions such as screwing and twisting and the like, and is more convenient and faster to operate.

Description

Tension dynamometer

Technical Field

The invention belongs to the technical field of cargo binding equipment, and relates to a tension dynamometer.

Background

The goods need rely on the strainer to bind the goods in order to prevent that the goods from removing at will in the transportation to promote the security of transportation. The tensioner generally includes a strap and a take-up mechanism for taking up the strap to effect the binding. However, in the process of tightening the binding band of the conventional tensioner, the magnitude of the tension force of the binding band cannot be known, and the conventional tensioner can only feel the magnitude of the operating force of the handle on the winding mechanism to guess whether the binding band is tensioned or not, or can feel whether the binding band is tensioned or not by pulling the binding band to the side part. Whether the tensioning force of the binding belt is suitable or not is estimated by the operation mode only by experience probably, the actual tensioning force value of the binding belt cannot be known, and therefore the problem that the goods are crushed due to the large tensioning force value or the goods shake due to the insufficient tensioning force value and the transportation safety are influenced can often occur in the actual operation process.

The applicant previously developed a tension dynamometer with application publication No. CN110296782A, which includes a base body, the base body has a through groove for a binding band to be clamped in, a pressing component with a pressure sensing element is disposed on one side wall of the through groove, the pressing component is connected with the base body through a thread and can press against the side wall of the other side of the through groove, and the side wall of the other side of the through groove is recessed inward corresponding to the pressing component.

This product can bind to many that bind the completion and detect fast in proper order, and the portability is good and use in a flexible way, but market has strong demand all the time to the more convenient and more accurate product of data of operation. To meet the further needs of the market, one of ordinary skill in the art would readily consider: 1. an automatic mechanism is added, manual operation is replaced by electric operation, for example, a rotating motor is added on the basis of an original product, and the jacking assembly is controlled to rotate to the position for measurement; 2. a pressure sensing element with higher detection precision and higher response speed is configured; 3. the feeding form of the jacking component is changed into a drawing type and is provided with a cylinder element for operation to improve the feeding efficiency.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a tension dynamometer, which aims to solve the technical problems that: the problem of current dynamometry appearance operation that rises comparatively troublesome is solved.

The purpose of the invention can be realized by the following technical scheme:

the tension dynamometer is characterized by further comprising a gas storage cavity and a gas pressure detection element for detecting the gas pressure in the gas storage cavity, and the belt pressure seat can move relative to the seat body under the jacking action of the binding belt and compress the gas in the gas storage cavity.

The base body is used for the binding belt to penetrate and form position constraint on the binding belt, and the pressing belt base arranged on the base body can be matched with the base body to press from two sides of the binding belt, so that the binding belt still bends correspondingly after being tightened. The air pressure detection element is provided with the air storage cavity and the air pressure detection element capable of detecting the air pressure in the air storage cavity, and the belt pressing seat is arranged to move relative to the seat body under the jacking action of the binding belt and simultaneously compress the air in the air storage cavity, so that a certain amount of air can be pre-filled in the air storage cavity before use to expand the air storage cavity and drive the belt pressing seat to move, then the binding belt to be installed can penetrate through the seat body, the binding belt can be gradually straightened from a bending state when the binding belt is installed and tensioned, and simultaneously the belt pressing seat is driven to move relative to the seat body to compress the whole air storage cavity, so that the air pressure in the air storage cavity is increased along with the increase of tensioning tension of the binding belt, and the air pressure detection element can convert the current tension value of the binding belt according to the measured pressure value by measuring the real-time pressure in the air storage cavity; when the measured tension value is too large or too small, the tensioner is operated to adjust until the proper tension value is reached. Because the pressure belt seat is in a state of shrinking and moving towards the air storage cavity in the measuring process, the bending degree of the binding belt in the seat body is smaller and smaller in the measuring process, namely the binding belt is more prone to the normal working state of the binding belt after the measurement is finished, the tension change of the whole binding belt after the tension dynamometer is dismounted is smaller, and the error range of the measured value is smaller; in the whole measuring process, an operator only needs to penetrate the binding belt into the tension dynamometer for reading after tightening, extra actions such as screwing and twisting are not needed, the operation is very convenient, and the precision error caused by operation error is reduced to the maximum extent.

In the tension dynamometer, the seat body is provided with the air bag, the inner cavity of the air bag is the air storage cavity, and the belt pressing seat is a housing covering the air bag and is in sliding connection with the seat body. Through set up the gasbag on the pedestal, the inner chamber that sets up the gasbag is the gas storage chamber to make press the belt seat cover to establish at the gasbag outside and with pedestal sliding connection, the sealing performance of gasbag is good, press the belt seat to be the encloser form can wrap up one side of gasbag and slide towards the gasbag and make the gasbag stably warp, press belt seat and pedestal sliding connection to guarantee that its orbit and application of force area are stable, ensure that the measured data is accurate. In addition, the design is that the strap seat is the cover shell of cover setting up in the gasbag outside, and this design's benefit still lies in: on the one hand, the tensioning dynamometer has better universality. The widths of binding belts in the market are different, such as 25mm, 38mm and 50mm, and if the binding belts directly push against the air bags to drive the air bags to compress, the contact areas of the binding belts with different widths and the air bags are different, so that the compression amount is different, and the dynamometer of a certain model can only adapt to the binding belts of a certain model. In the design, the pressure belt seat is a housing which is covered outside the air bag, so that the air bag is compressed by the movement of the pressure belt seat, the compression amount of the air bag brought by the binding belts with different widths is the same under the same tension measurement condition, and the tension dynamometer realizes the universality of the binding belts with different widths; on the other hand, after the pressing belt seat is arranged, the air bag can be protected, and abrasion to the air bag when the binding belt directly contacts the air bag is avoided.

In the tension dynamometer, the seat body is provided with support parts for supporting the binding belt on two sides of the belt pressing seat respectively, the bottom surface of the belt pressing seat is lower than the support part of each support part acting on the binding belt, and the belt pressing seat is covered at the bottom of the airbag and can move up and down relative to the seat body. The two supporting parts are arranged on the seat body and are respectively positioned on the two sides of the pressing belt seat, the bottom surface of the pressing belt seat is lower than the supporting surfaces of the supporting parts, so that one side surface of the binding belt can be simultaneously attached to the supporting surfaces of the two supporting parts after the binding belt penetrates through the seat body, the other time of the binding belt can be attached to the pressing belt seat, the binding belt positioned in the seat body is in a bent state, the whole tensioning dynamometer is stably stressed when the binding belt is tensioned and straightened, and the stability of the measuring effect is ensured.

As another scheme, the base body is provided with a guide hole with a closed upper end and an open lower end, the belt pressing base is slidably connected in the guide hole and can partially extend out of the lower end opening of the guide hole, and the belt pressing base seals the lower end opening of the guide hole and forms the air storage cavity with the inner side wall of the guide hole. Through set up upper end confined guiding hole on the pedestal, the lower extreme of guiding hole is sealed with the pressure area seat, forms confined gas storage chamber between the inside wall of pressure area seat and guiding hole, and the part that the lower extreme of pressure area seat stretches out the guiding hole can support with the binding area and lean on, and the internal gas that slides and compress the gas storage intracavity along the guiding hole internal contraction after receiving the roof pressure to guarantee that the survey numerical value is accurate stable.

In foretell tight dynamometer that rises, the pedestal includes base and support frame, gasbag and pressure band seat all set up on the base, the support frame includes posterior lateral plate and connects two support bars that are parallel to each other on posterior lateral plate leading flank, two spliced eyes have been seted up on the base, and two support bars one-to-one are pegged graft in two spliced eyes and two support bars are located the both sides of pressure band seat respectively, and two support bars are foretell supporting parts. Through setting up base and the support frame that the pedestal includes the components of a whole that can function independently, make gasbag and press the area seat and all install on the base, and set up the support frame and include posterior lateral plate and two parallel support bars, make the support bar correspond and peg graft and form the supporting part in two spliced eye on the base, support frame and base can adopt the material of different intensity to make like this, support bar on the support frame will directly bear the roof pressure effect of binding area and therefore can adopt the higher material of intensity, posterior lateral plate can support with the base when the tension dynamometer is worked and lean on and provide the location, and the stress point of base is concentrated can adopt injection molding etc. more.

In the tension dynamometer, the base comprises a rear vertical plate and a mounting plate connected to the front side surface of the rear vertical plate, the front side surface of the rear side plate of the support frame is further connected with a plug board, the bottom surface of the plug board is attached to the top surface of the mounting plate, and the plug board is fixedly connected with the mounting plate through a fastener. Through setting up the base and including back riser and mounting panel, set up the plugboard at the leading flank of back curb plate, make the plugboard paste with the top surface of mounting panel and paste and link firmly with the mounting panel through the fastener, the roof pressure accessible support bar and the plugboard of its both sides coact on the support frame when binding area is tight like this, reduce the impaired probability of support frame and base separation to guarantee the structural stability of whole tight dynamometers that rises.

In the tension dynamometer, a first guide hole is formed in the mounting plate, a second guide hole is formed in the plug-in board, the first guide hole and the second guide hole are equal in diameter and are opposite to each other, a pressing plate for plugging an opening in the upper end of the second guide hole is covered on the plug-in board, the top of the air bag abuts against the pressing plate when the air bag is in an inflated state, and the bottom of the air bag abuts against the pressing belt seat. The guide hole I is arranged on the mounting plate and is right opposite to the guide hole II on the plug-in board, so that the air bag can be arranged in the guide hole I and the guide hole II, the pressing plate is arranged at the upper end of the guide hole II to limit the air bag, the top of the inflated air bag is abutted against the pressing plate, the bottom of the air bag is abutted against the pressing belt seat, the air bag is guaranteed to be stably compressed, the diameters of the guide hole I and the guide hole II are equal, the compression effect of the air bag can be guaranteed to be stable and consistent, and the accuracy of data is guaranteed.

In foretell tight dynamometer that rises, the gasbag includes utricule and air cock, the air cock mounting hole has been seted up at the top of utricule, the air cock via hole has been seted up on the clamp plate, the air cock passes air cock mounting hole and air cock via hole respectively, the cover is equipped with the elastic washer one that is located the utricule inside on the air cock, and the air cock is located one end of utricule and has the supporter that is used for supporting elastic washer one, it has the nut that is located the clamp plate upside and can make the utricule at air cock mounting hole periphery edge press from both sides tightly between elastic washer one and clamp plate through screwing up the nut still to threaded connection on the air cock. Include utricule and air cock through setting up the gasbag, make in air cock and the utricule are connected and stretch out the utricule and pass the air cock via hole through the air cock mounting hole, set up elastic washer one again in addition and supporter cooperation and form at the inner wall of utricule and lean on, and the spiro union sets up the upper surface that the nut compressed tightly the clamp plate on the air cock, make peripheral utricule of air cock compress tightly and form good sealed effect with the clamp plate like this, guarantee the gas pressure normal response of gasbag, it is also more convenient in addition to release the dismouting.

In foretell tight dynamometer that rises, still the cover is equipped with elastic washer two and is the flaky gland of toper on the air cock between nut and the clamp plate, the lower terminal surface of elastic washer two supports with the top surface of clamp plate and leans on, and the up end of elastic washer two supports with the major diameter end of gland and leans on, the minor diameter end of gland supports with the nut and leans on. The lower extreme and the clamp plate that lean on through setting up elastic washer two lean on to the main aspects that the setting is the gland of taper supports with elastic washer two and leans on, and the tip and the nut of gland support and lean on, and the gland can produce deformation when the nut is screwed up the application of force like this, appears the nut after using the longer time like this not hard up then the gland can release deformation and continue the application of force and make utricule and clamp plate keep supporting the state.

In the tension dynamometer, the front side surface of the rear vertical plate is further connected with two reinforcing plates which are respectively positioned at two sides of the mounting plate, the top surface of the mounting plate is recessed relative to the top surfaces of the two reinforcing plates to form a groove for the insertion plate to extend into, the rear side surface of the rear vertical plate is provided with a positioning groove matched with the shape of the rear side plate of the support frame, and the rear side plate is embedded into the positioning groove. The leading flank through setting up the back riser is connected with the reinforcing plate and distributes in the both sides of mounting panel, the recessed formation recess of top surface that makes the mounting panel simultaneously, make plugboard and recess cooperation, the position of plugboard further obtains injecing of recess like this, make overall structure more firm, and the trailing flank that sets up the back riser sets up the constant head tank and cooperates like this the posterior lateral plate can inject and avoid self luffing motion in the constant head tank, the enough stability of structure that makes whole support frame ensures measuring effect.

In the tension dynamometer, the opening edge at the top of the pressure belt seat is provided with a flanging which is turned out outwards in the radial direction, the hole wall at the lower end of the guide hole is provided with a limiting convex edge, and the flanging can abut against the limiting convex edge after the pressure belt seat moves downwards relative to the base. Through set up radial outside turn-ups on the pressure area seat, set up spacing protruding edge at the lower extreme of guiding hole one, the biggest stroke and the position of pressure area seat can be restricted to spacing protruding edge like this, avoid pressing the area seat after the measurement completion and drop the loss.

In foretell tight dynamometer that rises, still be equipped with the upper cover that has the holding chamber on the top surface of clamp plate, the air cock of gasbag stretches into the holding intracavity, atmospheric pressure detecting element is located the holding intracavity just is connected with the air cock, the fastener is the bolt, the bolt pass in proper order behind upper cover and the clamp plate with mounting panel threaded connection. Through setting up the upper cover on the top surface at the clamp plate, make the air cock stretch into the holding intracavity of upper cover and be connected with the atmospheric pressure detecting element in the holding intracavity, the upper cover forms air cock and atmospheric pressure detecting element's protective housing like this, guarantees its operational environment temperature, and the rethread sets up the fastener and is the bolt and run through upper cover and clamp plate and mounting panel spiro union in proper order, and is fixed as an organic whole with upper cover, clamp plate and mounting panel like this, avoids the part drunkenness to influence measured data.

In the tension dynamometer, the tension dynamometer further comprises a receiver with a display unit, the receiver comprises a control chip and a wireless receiving unit connected with the control chip, the display unit is connected with the output end of the control chip, the air pressure detection element comprises a signal processing unit, a wireless transmitting unit and an air pressure sensor, the air pressure sensor is connected with the input end of the signal processing unit, the wireless transmitting unit is connected with the output end of the signal processing unit, and the wireless transmitting unit is in wireless communication connection with the wireless receiving unit. The air pressure sensor in the air pressure detection element can directly measure the real-time pressure in the air storage cavity, the signal processing unit can convert or detect the comparison of the database according to the air pressure data transmitted by the air pressure sensor to finally measure the tension value of the binding belt, and the tension value is transmitted to the wireless transmitting unit for signal transmission; the receiver can receive the data communication signal that wireless transmitting unit sent through wireless receiving unit and handle the tensile force numerical value of tying the area through control chip and convert not show the signal and show on display element, and the remote measurement of the operating personnel of being convenient for observes the reading, and is safe convenient more.

Compared with the prior art, the invention has the following advantages:

1. when the tension dynamometer is used, the binding belt passes through the back for tensioning measurement, the binding belt can actively abut against the belt pressing seat to compress the medium in the gas storage cavity, then, no additional operation is required by an operator before reading, and the detection process steps are less and more convenient.

2. The whole gas storage cavity is gradually reduced from an expansion state to be small in the measuring process of the tensioning dynamometer, the bending angle of the binding belt to be measured after the binding belt is finished can be very close to a normal working state, and the actual tension change of the binding belt before and after detection is reduced to the greatest extent.

3. The tensioning dynamometer enables the base with smaller bearing load to use lower-cost materials by designing the split structure of the base and the supporting frame, and ensures the cost control of products.

Drawings

Fig. 1 is a schematic perspective view of an operating state of the embodiment.

Fig. 2 is a schematic cross-sectional structure diagram of an operating state of the embodiment.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Fig. 4 is a schematic diagram of an explosive structure according to the first embodiment.

Fig. 5 is a schematic perspective view of a base according to a first embodiment.

Fig. 6 is a schematic perspective view of a support stand according to an embodiment.

FIG. 7 is a schematic diagram of an exploded structure of an airbag, an air faucet, and a pneumatic pressure detecting element according to an embodiment.

Fig. 8 is a schematic diagram of a receiver according to a first embodiment.

FIG. 9 is a circuit connection block diagram of the first embodiment.

Fig. 10 is a schematic cross-sectional view of the second embodiment.

In the figure, 1, a seat body; 11. a tape pressing seat; 111. flanging; 12. a support portion; 13. a guide hole; 14. a base; 141. inserting holes; 142. a rear vertical plate; 143. mounting a plate; 144. a first guide hole; 145. a reinforcing plate; 146. a groove; 147. positioning a groove; 148. a limiting convex edge; 15. a support frame; 151. a rear side plate; 152. a supporting strip; 153. a plugboard; 154. a second guide hole;

2. a binding band;

3. a gas storage cavity; 31. an air bag; 311. a capsule body; 312. an air tap mounting hole; 32. an air tap; 321. a first elastic washer; 322. a support body; 323. a nut; 324. a second elastic washer; 325. a gland;

4. an air pressure detecting element; 41. a signal processing unit; 42. a wireless transmitting unit; 43. an air pressure sensor;

5. a fastener;

6. pressing a plate; 61. the air tap is provided with a through hole;

7. an upper cover; 71. an accommodating cavity;

8. a receiver; 81. a display unit; 82. a control chip; 83. and a wireless receiving unit.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

The first embodiment is as follows:

as shown in fig. 1-4, the tension force measuring instrument includes a base body 1 through which a binding band 2 can pass, a pressure belt seat 11 is disposed on the base body 1 and can be pressed against the binding band 2 to bend the binding band 2 in the base body 1, the tension force measuring instrument further includes a gas storage chamber 3 and a gas pressure detecting element 4 for detecting the gas pressure in the gas storage chamber 3, and the pressure belt seat 11 can move relative to the base body 1 under the pressing action of the binding band 2 and compress the gas in the gas storage chamber 3. The base body 1 is used for the binding belt 2 to pass through and form position constraint on the binding belt 2, and the pressing belt seats 11 arranged on the base body 1 can be matched with the base body 1 to press from two sides of the binding belt 2, so that the binding belt 2 still bends correspondingly after being tightened. Specifically, the seat body 1 is provided with the air bag 31, the inner cavity of the air bag 31 is the air storage cavity 3, the belt pressing seat 11 is a cover covering the air bag 31, and the belt pressing seat 11 is connected with the seat body 1 in a sliding manner. The air bag 31 is arranged on the base body 1, the inner cavity of the air bag 31 is the air storage cavity 3, the belt pressing seat 11 is covered outside the air bag 31 and is in sliding connection with the base body 1, the air bag 31 is good in sealing performance, the belt pressing seat 11 is in a cover shape, one side of the air bag 31 can be wrapped, the belt pressing seat can slide towards the air bag 31 to enable the air bag 31 to stably deform, the belt pressing seat 11 is in sliding connection with the base body 1 to guarantee that the movement track and the force application area of the belt pressing seat are stable, and the accuracy of measured data is guaranteed.

As shown in fig. 1 to 6, the seat body 1 has support portions 12 for supporting the binding band 2 on both sides of the belt pressing seat 11, the bottom surface of the belt pressing seat 11 is lower than the support portion 12 of each support portion 12 acting on the binding band 2, and the belt pressing seat 11 is covered on the bottom of the airbag 31 and can move up and down relative to the seat body 1. Further, pedestal 1 includes base 14 and support frame 15, and gasbag 31 and press area seat 11 all set up on base 14, and support frame 15 includes posterior lateral plate 151 and connects two support bars 152 that are parallel to each other on posterior lateral plate 151 leading flank, has seted up two spliced eyes 141 on the base 14, and two support bars 152 one-to-one are pegged graft in two spliced eyes 141 and two support bars 152 are located the both sides of pressing area seat 11 respectively, and two support bars 152 are foretell supporting part 12. The support frame 15 may be made of a high strength material such as metal and engineering plastic, and the base 14 may be a low cost injection molded part. The base 14 comprises a rear vertical plate 142 and a mounting plate 143 connected to the front side surface of the rear vertical plate 142, the front side surface of the rear side plate 151 of the support frame 15 is further connected with a plug board 153, the bottom surface of the plug board 153 is attached to the top surface of the mounting plate 143, and the plug board 153 is fixedly connected with the mounting plate 143 through a fastener 5. Specifically, the front side of the rear vertical plate 142 is further connected with two reinforcing plates 145 respectively located at two sides of the mounting plate 143, the top surface of the mounting plate 143 is recessed relative to the top surfaces of the two reinforcing plates 145 to form a groove 146 into which the inserting plate 153 extends, the rear side of the rear vertical plate 142 is provided with a positioning groove 147 matched with the rear side plate 151 of the support frame 15 in shape, and the rear side plate 151 is embedded into the positioning groove 147.

As shown in fig. 2 to 7, a first guide hole 144 is formed in the mounting plate 143, a second guide hole 154 is further formed in the insertion plate 153, the first guide hole 144 and the second guide hole 154 have the same diameter and are opposite to each other, a pressing plate 6 for plugging an opening at the upper end of the second guide hole 154 is further covered on the insertion plate 153, when the airbag 31 is in an inflated state, the top of the airbag 31 abuts against the pressing plate 6, and the bottom of the airbag 31 abuts against the pressing belt seat 11. The opening edge at the top of the belt pressing seat 11 is provided with a flange 111 which is turned out outwards in the radial direction, the hole wall at the lower end of the first guide hole 144 is provided with a limiting convex edge 148, and the flange 111 can be abutted against the limiting convex edge 148 after the belt pressing seat 11 moves downwards relative to the base 14. Gasbag 31 includes utricule 311 and air cock 32, air cock 32 structure is prior art, the air cock has in the air cock 32, under the normality, air cock 32 can be sealed to the air cock, air cock mounting hole 312 has been seted up at utricule 311's top, air cock via hole 61 has been seted up on clamp plate 6, air cock 32 passes air cock mounting hole 312 and air cock via hole 61 respectively, the cover is equipped with one 321 of elastic washer that is located utricule 311 inside on the air cock 32, the one end that air cock 32 is located utricule 311 has the supporter 322 that is used for supporting one 321 of elastic washer, it has nut 323 that is located clamp plate 6 upside and can make the utricule 311 of air cock mounting hole 312 peripheral edge press from both sides tightly between one 321 of elastic washer and clamp plate 6 through screwing up nut 323 to go back on the air cock 32. An elastic washer two 324 and a conical sheet-shaped gland 325 are further sleeved between the nut 323 and the pressure plate 6 on the air nozzle 32, the lower end face of the elastic washer two 324 abuts against the top face of the pressure plate 6, the upper end face of the elastic washer two 324 abuts against the large-diameter end of the gland 325, and the small-diameter end of the gland 325 abuts against the nut 323. The top surface of the pressing plate 6 is further provided with an upper cover 7 with an accommodating cavity 71, an air tap 32 of the air bag 31 extends into the accommodating cavity 71, the air pressure detection element 4 is located in the accommodating cavity 71 and connected with the air tap 32, the fastening element 5 is a bolt, and the bolt sequentially penetrates through the upper cover 7 and the pressing plate 6 and then is in threaded connection with the mounting plate 143. The air pressure detecting element 4 is a conventional one, and may be a tire pressure monitor widely used for detecting a tire pressure of an automobile. As disclosed in the chinese patent literature, an "external tire pressure monitoring transmitter" application number: 200520063014.4, respectively; authorization notice number: CN 2826556Y; the air pressure detecting element 4 can be communicated with the air storage cavity 3 by pushing open the air core in the air tap 32 after being connected.

As shown in fig. 8 and 9, the tension force gauge further includes a receiver 8 having a display unit 81, the display unit 81 can directly display the converted tension force value through a display screen, the receiver 8 includes a control chip 82 and a wireless receiving unit 83 connected to the control chip 82, the display unit 81 is connected to an output end of the control chip 82, the air pressure detecting element 4 includes a signal processing unit 41, a wireless transmitting unit 42 and an air pressure sensor 43, the air pressure sensor 43 preferably employs an MEMS sensor, the air pressure sensor 43 is connected to an input end of the signal processing unit 41, the wireless transmitting unit 42 is connected to an output end of the signal processing unit 41, the wireless transmitting unit 42 is in wireless communication with the wireless receiving unit 83, and the wireless transmitting unit 42 and the wireless receiving unit 83 are existing modules.

The use method and the working principle of the tension dynamometer are described as follows:

before use, a certain amount of gas medium is filled in the air bag 31, the air bag 31 is expanded to reach a preset pressure value, the upper end of the air bag 31 abuts against the pressing plate 6, and the lower end of the air bag 31 abuts against the pressing belt seat 11; the binding band 2 is inserted into the base body 1, specifically, one side surface of the binding band 2 is simultaneously attached to the two support parts 12, and the other side surface of the binding band 2 is attached to the press belt seat 11, so that the binding band 2 in the base is bent. Then, the binding belt 2 is tensioned by using a tensioner, the binding belt 2 has a tendency of tending to be straightened, at the moment, the binding belt 2 can generate pressure to act on the supporting part 12 and the belt pressing seat 11, the belt pressing seat 11 contracts inwards to press the air bag 31, when the tensioning force of the binding belt 2 is larger, the larger the pressure action of the belt pressing seat 11 on the air bag 31 is, the larger the compression amount of the air bag 31 is, the higher the gas pressure in the inner cavity of the air bag 31 is, the more the binding belt 2 tends to be straight, and the bending angle of the compressed state of the binding belt 2 and the compression amount of the air bag 31 form a data corresponding relation, so that the bending angle corresponding to the binding belt 2 can be found by comparing a database according to the gas pressure value in the inner cavity of the air bag 31 so as to convert the tension value of the binding belt 2. Microscopically, the air pressure detecting element 4 detects and transmits a detected air pressure signal to the signal processing unit 41, the signal processing unit 41 performs analog-to-digital conversion on the received signal, and transmits the converted signal to the wireless receiving unit 83 of the receiver 8 through the wireless transmitting unit 42, the control chip 82 obtains an air pressure value according to the received air pressure detecting signal, a tension force value of the binding belt 2 is obtained through calculation, and then the display screen is controlled to display the tension force value.

Example two:

as shown in fig. 10, the present embodiment is substantially the same as the first embodiment, except that: the base body 1 is provided with a guide hole 13 with a closed upper end and an open lower end, the belt pressing base 11 is slidably connected in the guide hole 13, the belt pressing base 11 can partially extend out of the lower end opening of the guide hole 13, the belt pressing base 11 seals the lower end opening of the guide hole 13 and is in sealing fit with the inner side wall of the guide hole 13 to form the air storage cavity 3, and the air storage cavity 3 is communicated with the air pressure detection element 4 through an air nozzle 32.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. A tension dynamometer comprises a base body (1) through which a binding belt (2) can pass, wherein a belt pressing base (11) which can be pressed against the binding belt (2) and enables the binding belt (2) to be bent in the base body (1) is arranged on the base body (1), and the tension dynamometer is characterized by further comprising a gas storage cavity (3) and a gas pressure detection element (4) for detecting gas pressure in the gas storage cavity (3), wherein the belt pressing base (11) can move relative to the base body (1) under the jacking action of the binding belt (2) and compress gas in the gas storage cavity (3); be equipped with gasbag (31) on pedestal (1), the inner chamber of gasbag (31) is foretell gas storage chamber (3), the both sides that lie in compression band seat (11) on pedestal (1) have supporting part (12) that are used for supporting binding area (2) respectively, the bottom surface of compression band seat (11) is less than supporting part (12) that every supporting part (12) act on binding area (2), compression band seat (11) cover is located gasbag (31) bottom and can reciprocate relatively pedestal (1).

2. The tension load cell of claim 1, wherein the strap holder (11) is a housing covering the air bag (31) and the strap holder (11) is slidably connected to the seat body (1).

3. The tension force measuring instrument according to claim 1, wherein the seat body (1) comprises a base (14) and a support frame (15), the airbag (31) and the pressure band seat (11) are both arranged on the base (14), the support frame (15) comprises a rear side plate (151) and two support bars (152) which are parallel to each other and connected to the front side surface of the rear side plate (151), two insertion holes (141) are formed in the base (14), the two support bars (152) are correspondingly inserted into the two insertion holes (141) one by one, the two support bars (152) are respectively located on two sides of the pressure band seat (11), and the two support bars (152) are both the support portions (12).

4. The tension load cell of claim 3, wherein the base (14) comprises a rear vertical plate (142) and a mounting plate (143) connected to a front side of the rear vertical plate (142), a plug board (153) is further connected to a front side of a rear side plate (151) of the support frame (15), a bottom surface of the plug board (153) abuts against a top surface of the mounting plate (143), and the plug board (153) is fixedly connected to the mounting plate (143) through a fastener (5).

5. The tension dynamometer of claim 4, wherein the mounting plate (143) is provided with a first guide hole (144), the insertion plate (153) is further provided with a second guide hole (154), the first guide hole (144) and the second guide hole (154) have the same diameter and are opposite to each other, the insertion plate (153) is further covered with a pressing plate (6) for plugging an opening at the upper end of the second guide hole (154), the top of the airbag (31) abuts against the pressing plate (6) when the airbag (31) is in an inflated state, and the bottom of the airbag (31) abuts against the strap pressing seat (11).

6. The tension load cell according to claim 5, wherein the bladder (31) comprises a bladder body (311) and an air tap (32), the top of the bag body (311) is provided with an air nozzle mounting hole (312), the pressure plate (6) is provided with an air nozzle through hole (61), the air nozzle (32) respectively penetrates through the air nozzle mounting hole (312) and the air nozzle through hole (61), an elastic washer I (321) positioned in the bag body (311) is sleeved on the air nozzle (32), a support body (322) used for supporting the elastic washer I (321) is arranged at one end of the air nozzle (32) positioned in the bag body (311), the air tap (32) is further in threaded connection with a nut (323) located on the upper side of the pressing plate (6), and the bag body (311) on the peripheral edge of the air tap mounting hole (312) can be clamped between the elastic washer I (321) and the pressing plate (6) by tightening the nut (323).

7. The tension dynamometer of claim 6, wherein an elastic washer II (324) and a conical sheet-shaped gland (325) are further sleeved on the air nozzle (32) between the nut (323) and the pressure plate (6), the lower end face of the elastic washer II (324) abuts against the top face of the pressure plate (6), the upper end face of the elastic washer II (324) abuts against the large-diameter end of the gland (325), and the small-diameter end of the gland (325) abuts against the nut (323).

8. The tension dynamometer according to any one of claims 4 to 7, wherein the front side of the rear vertical plate (142) is further connected with two reinforcing plates (145) respectively located on two sides of the mounting plate (143), the top surface of the mounting plate (143) is recessed relative to the top surfaces of the two reinforcing plates (145) to form a groove (146) into which the plug plate (153) extends, the rear side of the rear vertical plate (142) is provided with a positioning groove (147) matched with the rear side plate (151) of the support frame (15) in shape, and the rear side plate (151) is embedded into the positioning groove (147).

9. The tension force measuring instrument according to claim 5, 6 or 7, wherein the opening edge at the top of the pressure belt seat (11) is provided with a flange (111) which is turned outwards in the radial direction, the hole wall of the lower end of the first guide hole (144) is provided with a limiting convex edge (148), and the flange (111) can abut against the limiting convex edge (148) after the pressure belt seat (11) moves downwards relative to the base (14).

10. The tension force measuring instrument according to claim 6 or 7, wherein an upper cover (7) having a receiving cavity (71) is further disposed on the top surface of the pressure plate (6), an air tap (32) of the air bag (31) extends into the receiving cavity (71), the air pressure detecting element (4) is located in the receiving cavity (71) and connected to the air tap (32), the fastening member (5) is a bolt, and the bolt sequentially penetrates through the upper cover (7) and the pressure plate (6) and then is in threaded connection with the mounting plate (143).

11. The tensioned force gauge according to any one of claims 1 to 7, further comprising a receiver (8) having a display unit (81), wherein the receiver (8) comprises a control chip (82) and a wireless receiving unit (83) to which the control chip (82) is connected, the display unit (81) is connected to an output end of the control chip (82), the air pressure detection element (4) comprises a signal processing unit (41), a wireless transmitting unit (42) and an air pressure sensor (43), the air pressure sensor (43) is connected to an input end of the signal processing unit (41), the wireless transmitting unit (42) is connected to an output end of the signal processing unit (41), and the wireless transmitting unit (42) is in wireless communication with the wireless receiving unit (83).