CN206330832U - It is a kind of to measure material pulling force and the device of amount of deflection relation - Google Patents

Abstract

The utility model discloses a device for measuring the relationship between tension and deflection of materials, which comprises a material holder, a tension measurement storage device and a data acquisition terminal. The material holder includes a first column, a second column, a third column, The fourth column, the first beam, the second beam, the third beam, the fourth beam, the fifth beam and the corner bracket, the two first columns are placed opposite each other, and the two first columns pass through from top to bottom The corner codes fix the first crossbeam, the second crossbeam, the fourth crossbeam and the fifth crossbeam, and the third crossbeam and the first crossbeam corresponding to it are provided with guide shaft supports slidingly connected with them through slide rails. The utility model has the beneficial effect Yes: This instrument can not only automatically measure the relationship between deflection and tension, but also can be used as a classroom experiment tool to demonstrate the deflection and tension problems of cantilever beams and the analysis of deflection and tension problems of statically indeterminate problems.

Description

A device for measuring the relationship between tension and deflection of materials

technical field

The utility model relates to a test device, in particular to a device for measuring the relationship between material tension and deflection.

Background technique

At present, there is no special deflection tester on the market. Using a tensile machine to test the deflection will bring in friction. The greater the deflection, the greater the friction interference, which will greatly affect the accuracy of the experiment. And there is currently no instrument for measuring the relationship between deflection and material tension for teaching experiments, and there is an urgent need for a convenient, effective and reliable testing instrument to fill the gap in the market.

Utility model content

The purpose of this utility model is to provide a device for measuring the relationship between material tension and deflection, so as to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the utility model provides the following technical solutions:

A device for measuring the relationship between material tension and deflection, including a material holder, a tension measurement storage device and a data collection terminal, the material holder includes a first column, a second column, a third column, a fourth column, a A crossbeam, a second crossbeam, a third crossbeam, a fourth crossbeam, a fifth crossbeam and corner brackets, the two first columns are placed opposite to each other, and the first two first columns are fixed by the corner brackets from top to bottom. The beam, the second beam, the fourth beam and the fifth beam, the two first columns are fixedly connected by a plurality of beams, the length of the first beam and the second beam are equal, and the length of the fourth beam and the fifth beam are equal And its length is greater than the first beam and the second beam, the ends of the first beam and the second beam are connected by the third column, the bottom of the third column is fixed on the second beam by the corner code, the second beam and the fourth beam The ends of the two columns are connected by the second column, and the bottom of the second column is fixed on the fourth beam through the corner code to complete the assembly of the overall frame, wherein a third beam is arranged between the second column and the fourth column, and the third beam and the The first beam corresponding to it is equipped with a guide shaft support slidingly connected with it. The two guide shaft supports are connected through a guide shaft. The finale axis formed by the third crossbeam and the plane perpendicular to the first crossbeam is provided with a bearing between the finale shaft and the slide block, and the bottom of the slide block is fixed with a wire rope fixing seat; the gap between the fourth crossbeam and the fifth beam is fixed with a The fourth crossbeam is two crossbars perpendicular to each other. Each crossbar is provided with a fixed pulley support slidingly connected with it. The fixed pulley support is provided with a fixed pulley. The wire rope fixing seat and the two fixed pulleys are connected with the tension measuring storage device. One end of the material sheet is fixed on the cross bar between the two first columns through the material fixing seat, and the other end is placed between the final shaft and the wire rope fixing seat. and is blocked by the finale; the tension measurement storage instrument is composed of a column, a scale, a data interface, a force gauge, a tension sensor and a base, and the base is embedded in the gap between the fourth beam and the fifth beam, and is connected to the fourth beam. The crossbar between the crossbeam and the fifth crossbeam is in conflict. The base is provided with a vertical column, a scale and a sliding wall. The column and the sliding wall are arranged in close contact. There is a data interface on the meter, and the dynamometer is connected to a terminal with data acquisition function. The dynamometer is connected to the sliding sleeve on the scale through a sliding rod, and the sliding sleeve is set on the scale and slidably connected with it. A tension sensor is arranged, and a steel wire rope is fixed on the tension sensor.

As a further solution of the utility model: the tension measuring storage instrument is driven by a stepping motor to drive the encoder, the stepping motor and the encoder are packaged in the base, and the tension measuring storage instrument is controlled to move up and down by a screw rod transmission, and the scale has an accuracy of 0.01mm grating scale.

As a further solution of the utility model: RS232 protocol is used for communication between the tension measuring storage device and the data collection terminal, and the loading mode and size can be set on the interface of the data collection terminal.

As a further solution of the present invention: a support shaft in contact with the material sheet is provided at the lower part of the middle, the support shaft is fixed by the support shaft support, and the support shaft support is slidably connected with the second beam.

Compared with the prior art, the beneficial effect of the utility model is that: the automatic measurement and preservation of values by pneumatic force can achieve the automation of the material experiment; The reliability of the deflection is improved; the position of the pressing shaft can be adjusted by adjusting the guide shaft support to measure the length of different material pieces; without the support shaft, the mechanical properties of the material cantilever can be measured, and it can be used to measure the statically indeterminate structure after adding the support shaft The relationship between deflection and tension at any position; the aluminum profile bracket of this product is small and easy to disassemble and install, and it is easy to adjust; this instrument can not only automatically measure the relationship between deflection and tension, but also can be used as a classroom experiment tool to demonstrate the deflection and tension of cantilever beams and super static indeterminate Problem analysis of deflection and tension problems, and the fulcrum of the instrument can be adjusted to test the material deflection-tension characteristics of cantilever beams of different lengths and the deflection-tension characteristics of different fulcrums.

Description of drawings

Fig. 1 is a structural schematic diagram of a material holder in a device for measuring the relationship between material tension and deflection.

Fig. 2 is a front view of a device for measuring the relationship between tension and deflection of materials.

Fig. 3 is a left side view of a device for measuring the relationship between tension and deflection of materials.

Fig. 4 is a schematic structural diagram of a tension measurement storage device in a device for measuring the relationship between tension and deflection of materials.

In the figure: 1-first column, 2-corner code, 3-first beam, 4-material fixing seat, 5-material sheet, 6-guide shaft support, 7-guide shaft, 8-slider, 9- Finale, 10-wire rope fixing seat, 11-fixed pulley, 12-tension measuring storage device, 13-fifth beam, 14-fixed pulley support, 15-fourth beam, 16-second column, 17-third beam , 18-second beam, 19-support shaft support, 20-support shaft, 21-column, 22-scale, 23-data interface, 24-force gauge, 25-tension sensor, 26-base, 27-slide Cover, 28-the third column, 29-the fourth column.

detailed description

The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

Please refer to Figures 1-4, a device for measuring the relationship between material tension and deflection, including a material holder, a tension measurement storage device 12 and a data acquisition terminal, the material holder includes a first column 1 and a second column 16 , the third column 28, the fourth column 29, the first beam 3, the second beam 18, the third beam 17, the fourth beam 15, the fifth beam 13 and the corner code 2, the two first columns 1 are opposite to each other Placement, the first beam 3, the second beam 18, the fourth beam 15 and the fifth beam 13 are fixed by the corner code 2 from top to bottom on the two first columns 1, and multiple beams are passed between the two first columns 1 The crossbar is fixedly connected, the length of the first crossbeam 3 and the second crossbeam 18 is equal, the length of the fourth crossbeam 15 and the fifth crossbeam 13 are equal and its length is greater than the first crossbeam 3 and the second crossbeam 18, the first crossbeam 3 and the second crossbeam The ends of the two beams 18 are connected by the third column 28, and the bottom of the third column 28 is fixed on the second beam 18 by corner codes, and the ends of the second beam 18 and the fourth beam 15 are connected by the second column 16, and the second beam 18 is connected by the second column 16. The bottoms of the two uprights 16 are fixed on the fourth crossbeam 15 by corner codes to complete the assembly of the overall frame, wherein a third crossbeam 17 is arranged between the second upright 16 and the fourth upright 29, the third crossbeam 17 and the corresponding first crossbeam 17 A crossbeam 3 is provided with a guide shaft support 6 that is slidably connected with it. The two guide shaft supports 6 are connected by a guide shaft 7. The guide shaft 7 is sleeved with a slider 8 that is slidably connected with it. A final shaft 9 perpendicular to the plane formed by the third crossbeam 17 and the first crossbeam 3 is provided, and a bearing is provided between the final shaft 9 and the slider 8, so that the final shaft 9 can rotate independently relative to the slider 8 and minimize friction force, realizes the vertical downward of pulling force, has guaranteed the reliability of deflection detection result, and the bottom of slide block 8 is fixed with steel wire rope fixing seat 10, is used for fixing steel wire rope; The gap between the fourth crossbeam 15 and the fifth crossbeam 13 Two cross bars perpendicular to the fourth cross beam 15 are fixed inside, each cross bar is provided with a fixed pulley support 14 slidingly connected with it, the fixed pulley support 14 is provided with a fixed pulley 11, and one end of the wire rope is fixed At the wire rope holder 10, the other end passes through the wire rope holder 10 and two fixed pulleys 11 to be connected with the tension measuring storage instrument, and one end of the material sheet 5 is fixed on the cross bar between the two first columns 1 by the material holder 4 , the other end is placed between the finale 9 and the wire rope fixing seat 10, and is blocked by the finale 9;

The tension measurement storage instrument 12 is composed of a column 21, a scale 22, a data interface 23, a load cell 24, a tension sensor 25 and a base 26, and the base 26 is embedded in the gap between the fourth beam 15 and the fifth beam 13 , and conflict with the cross bar between the fourth beam 15 and the fifth beam 13, complete the fixing of the base 26, the base 26 is provided with a vertical column 21, a scale 22 and a sliding wall 28, the column 21 and the sliding wall 28 Close to the setting, the sliding wall 28 is provided with a dynamometer 24 slidably connected to it, and the dynamometer 24 is provided with a data interface 23, and the dynamometer 24 is connected to a terminal with a data collection function, which can process and analyze the data, draw Tension-deflection curve, the force gauge 24 is connected with the sliding sleeve 27 on the scale 22 through the sliding rod, the slide sleeve 27 is sleeved on the scale 22 and is slidably connected with it, and the bottom end of the force gauge 24 is provided with a tension sensor 25, and the tension The sensor 25 is fixed with a wire rope, and when the force gauge 24 moves upwards, the wire rope is driven to move, and the wire rope holder 10 is pulled down, and the finale 9 moves synchronously. Reduce the impact of friction on the pulling force, so that the pulling force is basically vertically downward to obtain a real deflection, and the fixed pulley support 14 can move on the cross bar, thereby ensuring that the pulling force of the steel wire rope bypassing the two fixed pulleys is in the plumb direction. The scale 22 records the displacement, and the tension sensor 25 records the magnitude of the force, so as to complete the test.

The tension measuring storage instrument 12 is driven by a stepping motor to drive an encoder, the stepping motor and the encoder are packaged in the base 26, and the screw drive control is used to make the measurement process stable and accurate, and the scale 22 is a grating scale with an accuracy of 0.01mm , realize the synchronous change of force and displacement, and the scale 22 and force gauge 24 can display the displacement and pressure of each pressing position in real time.

The tension measurement storage device 12 communicates with the data collection terminal using the RS232 protocol. The loading mode and size can be set on the data collection terminal interface, and the storage device transmits the collected measurement data to the terminal.

The position below the middle part of the material sheet 5 is provided with a support shaft 20 in contact with it, the support shaft 20 is fixed by the support shaft support 19, and the support shaft support 19 is slidably connected with the second beam 18, which can be used to measure ultra-static Determine the relationship between deflection and tension at any position of the structure.

The first column 1, the second column 16, the third column 28, the fourth column 29, the first crossbeam 3, the second crossbeam 18, the third crossbeam 17, the fourth crossbeam 15, the fifth crossbeam 13 and the crossbar are all Made of 3030 aluminum profile, the structure is smart and strong, and it is easy to adjust.

The working principle of the utility model is: when the dynamometer 24 moves upwards, it drives the wire rope to move, pulls the wire rope fixing seat 10 downward, and the finale 9 moves synchronously. The block 8 is connected by rotation, which can minimize the influence of friction on the pulling force, so that the pulling force is basically vertically downward to obtain a real deflection, and the fixed pulley support 14 can move on the cross bar, thereby ensuring that the two fixed pulleys are bypassed The tension of the steel wire rope is in the plumb direction, the scale 22 records the displacement, and the tension sensor 25 records the magnitude of the force, so as to complete the test, and the collected data can also be transmitted to the data acquisition terminal through the RS232 protocol communication, which can directly draw the tensile force -Deflection curve.

The preferred implementation of this patent has been described in detail above, but this patent is not limited to the above-mentioned implementation, and within the knowledge of those of ordinary skill in the art, it can also be made without departing from the purpose of this patent. Variations.

Claims (4)

1. a kind of measure material pulling force and the device of amount of deflection relation, including material holder, tension measurement storage instrument and data are adopted Collect terminal, the material holder includes the first column, the second column, the 3rd column, the 4th column, first crossbeam, the second horizontal stroke Beam, the 3rd crossbeam, the 4th crossbeam, the 5th crossbeam and corner brace, it is characterised in that two first studs are staggered relatively, Corner brace is from top to bottom passed sequentially through on two first columns and fixes first crossbeam, second cross beam, the 4th crossbeam and the 5th crossbeam, two It is fixedly connected between the column of root first by many cross bars, the equal length of first crossbeam and second cross beam, the 4th crossbeam and The equal length of five crossbeams and its length are more than first crossbeam and second cross beam, and the end of first crossbeam and second cross beam passes through the Three columns are connected, and the bottom of the 3rd column is fixed on second cross beam by corner brace, and the end of second cross beam and the 4th crossbeam leads to The connection of the second column is crossed, the bottom of the second column is fixed on the 4th crossbeam by corner brace, completes the assembling of general frame, wherein It is provided between second column and the 4th column on the 3rd crossbeam, the 3rd crossbeam and corresponding first crossbeam and is all provided with sliding with it Connected between the guide shaft support of connection, two guide shaft supports by the axis of guide, be arranged with and be slidably connected with it on the axis of guide Sliding block, sliding block is provided with the perpendicular last item of plane with the 3rd crossbeam and first crossbeam formation, set between last item and sliding block There are bearing, the fixed steel wire rope fixed seat in bottom of sliding block；Fixed and the 4th horizontal stroke in gap between 4th crossbeam and the 5th crossbeam The fixed pulley bearing being slidably connected with it is equipped with two perpendicular cross bars of beam, every cross bar, fixed pulley bearing is provided with Fixed pulley, one end of steel wire rope is fixed on steel wire rope fixed seat, and another end passes through steel wire rope fixed seat and two fixed pulleys and pulling force Measurement storage instrument connection, one end of material piece is fixed on the cross bar between two first columns by material fixed seat, another end It is placed between last item and steel wire rope fixed seat, and blocked by last item；

The tension measurement storage instrument is made up of column, scale, data-interface, force-measuring gauge, pulling force sensor and base, and base is embedding Enter the cross bar being arranged in the gap between the 4th crossbeam and the 5th crossbeam, and between the 4th crossbeam and the 5th crossbeam to offset Touch, base is provided with vertical column, scale and slide wall, column is close to set with slide wall, and slide wall is provided with and is slidably connected with it Force-measuring gauge, force-measuring gauge be provided with data-interface, force-measuring gauge connection with data acquisition function terminal, force-measuring gauge pass through slide Bar is connected with the slip cap on scale, and slip cap is set on scale and is slidably connected with it, and the bottom of force-measuring gauge is provided with pulling force Steel wire rope is installed with sensor, pulling force sensor.

2. a kind of measurement material pulling force according to claim 1 and the device of amount of deflection relation, it is characterised in that the pulling force Measurement storage instrument drives encoder-driven by stepper motor, and stepper motor and encoder package are in base, and scale is precision For 0.01mm grating ruler.

3. a kind of measurement material pulling force according to claim 2 and the device of amount of deflection relation, it is characterised in that the pulling force Loading can be set by being used between measurement storage instrument and data collection station on RS232 protocol communications, data collection station interface Mode and size.

4. a kind of measurement material pulling force according to claim 1 and the device of amount of deflection relation, it is characterised in that the material The middle part lower position of piece is provided with the support shaft being in contact with it, and support shaft is fixed by supporting shaft stool, support shaft branch Seat is slidably connected with second cross beam.