CN2177942Y - Auto-constant stress loading tester for nonmetal material pressure - Google Patents
Auto-constant stress loading tester for nonmetal material pressure Download PDFInfo
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- CN2177942Y CN2177942Y CN 93229689 CN93229689U CN2177942Y CN 2177942 Y CN2177942 Y CN 2177942Y CN 93229689 CN93229689 CN 93229689 CN 93229689 U CN93229689 U CN 93229689U CN 2177942 Y CN2177942 Y CN 2177942Y
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- constant stress
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Abstract
The utility model provides an auto-constant stress pressure testing machine for nonmetal material. The utility model is characterized in that the interior of a lower box body fixedly connected with an upper box body is provided with a motor which drives a thread sleeve axially fixed to rotate through a driving device; the upper end of a lead screw which is arranged in the thread sleeve and forms screw connection with the thread sleeve is fixed with a lower pressure table, and the lower end forms spline connection with a spline sleeve fixed on the upper box body; the bottom end of a vertical column is connected with a fixed plate, and the upper end is fixed with an upper cross beam fixed with an upper pressure table. A sensor is connected in an upper pressure table seat and is connected with a control circuit connected with a motor. The utility model has the advantages of constant stress load, accurate data, and screen display.
Description
The utility model belongs to a kind of pressure testing machine, particularly relates to a kind of automatic constant stress loading nonmetallic materials pressure testing machine.
At present, the existing pressure testing machine overwhelming majority of China is a hydropress, the control of its loading speed mainly realizes by the manually-operated handle, is difficult to reach the constant stress loading, external applied automatic constant stress loading pressure testing machine, also be to adopt hydraulic system to finish pressure process, in the loading process, produce impact load, and the loading speed fluctuation range is bigger, cause the test findings error big, data are inaccurate.
The purpose of this utility model provides a kind of automatic constant stress nonmetallic materials pressure testing machine, to solve present strength of cement check by manual operation, error is bigger, can not satisfy the problem of the requirement of defined in the testing standard, also provide inspection machine simultaneously for other nonmetallic materials constant stress loading ruggedness test.
Technical solution of the present utility model is: a kind of automatic constant stress loading nonmetallic materials pressure testing machine, it is characterized in that: lower box 4 joins with upper box 6, belt pulley 27 is contained on the axle of the motor 1 that places in the lower box 4, belt pulley 28 is contained in an end that is bearing in the one-level worm screw 20 that can freely rotate in the upper box 6, driving-belt 26 links with belt pulley 27 and 28 respectively, one-level worm screw 20 is meshed with first-stage worm gear 21, first-stage worm gear 21 is with to be bearing in the second-stage worm 23 that can freely rotate in the upper box 6 coaxial, second-stage worm 23 is meshed with second-stage worm gear 8, second-stage worm gear 8 be axially fixed at the swivel nut 11 that can freely rotate on the fixed head 29 and join, fixed head 29 joins with upper box 6, leading screw 9 places in the swivel nut 11, leading screw 9 and swivel nut 11 thread connection, leading screw 9 bottoms join with the spline housing 5 that leading screw 9 rotates that can prevent that is fixed on the upper box 6, the top and the bottom platen of leading screw 9 join, column 15 joins with fixed head 29, entablature 18 joins with column 15, and upper holder 19 joins with entablature 18.The sensor 17 that places in the upper holder seat 16 is housed between entablature 18 and the upper holder 19, is connected to control circuit 33, control circuit 33 output termination motors 1 with sensor 17.
Between described first-stage worm gear 21 and the second-stage worm 23 safety clutch 22 is housed.
The microcomputer that described control circuit 33 is joined by amplifying circuit that joins with sensor 17 and amplifying circuit, the control relay circuit that joins with microcomputer, keyboard, display circuit, the FM circuit of joining with control relay circuit are formed.
Also be connected to printer with microcomputer.
The utility model compared with prior art, owing to adopted mechanical drive loading and system controlled by computer, have from the loading of motion tracking constant stress, advantage such as loading speed is steadily, the screen display error is little, data are accurate, and overcome the leakage of hydropress, the shortcoming that fault is many.
Fig. 1 is the general assembly drawing of the mechanical part of the utility model embodiment;
Fig. 2 is the A-A cut-open view of the utility model embodiment shown in Figure 1;
Fig. 3 is the control circuit block diagram of the utility model embodiment;
Fig. 4 is an amplifying circuit schematic diagram among the utility model embodiment;
Fig. 5 is the utility model embodiment constant-current source circuit schematic diagram;
Fig. 6 is the utility model embodiment microcomputer and peripheral circuit figure;
Fig. 7 is the utility model embodiment FM circuit schematic diagram;
Fig. 8 is the utility model embodiment control relay circuit schematic diagram.
Below in conjunction with drawings and Examples the utility model is described further: a kind of automatic constant stress loading nonmetallic materials pressure testing machine, it is characterized in that: lower box 4 joins with upper box 6, belt pulley 27 is contained on the axle of the motor 1 that places in the lower box 4, belt pulley 28 is contained in an end that is bearing in the one-level worm screw 20 that can freely rotate in the upper box 6, driving-belt 26 links with belt pulley 27 and 28 respectively, one-level worm screw 20 is meshed with first-stage worm gear 21, first-stage worm gear 21 is with to be bearing in the second-stage worm 23 that can freely rotate in the upper box 6 coaxial, second-stage worm 23 is meshed with second-stage worm gear 8, second-stage worm gear 8 be axially fixed at the swivel nut 11 that can freely rotate on the fixed head 29 and join, fixed head 29 joins with upper box 6, leading screw 9 places in the swivel nut 11, leading screw 9 and swivel nut 11 thread connection, leading screw 9 bottoms join with the spline housing 5 that leading screw 9 rotates that can prevent that is fixed on the upper box 6, the top and the bottom platen of leading screw 9 join, column 15 joins with fixed head 29, entablature 18 joins with column 15, and upper holder 19 joins with entablature 18.The sensor 17 that places in the upper holder seat 16 is housed between entablature 18 and the upper holder 19, is connected to control circuit 33, control circuit 33 output termination motors 1 with sensor 17.
Between described first-stage worm gear 21 and the second-stage worm 23 safety clutch 22 is housed.
The FM circuit that the microcomputer that described control circuit 33 is joined by amplifying circuit that joins with sensor 17 and amplifying circuit, the control relay circuit, keyboard-display circuit and the control relay circuit that join with microcomputer join is formed.
Also be connected to printer with microcomputer.
As shown in Figure 1, 2: 4 is that lower box, 6 is that upper box, 18 is that entablature, 29 is that fixed head, 14 is that bottom platen, 19 is upper holder, all is foundry goods, and its material is HT20～40, casts after machining forms.One-level worm screw 20, second-stage worm 23, spline housing 5, leading screw 9, swivel nut 11, column 15 all adopt 45 steel, the material of first-stage worm gear 21, second-stage worm gear 8 is a Casting aluminium bronze, belt pulley 27,28 is the plain cast iron V sheave, can select two of C type (or Type B) vee belt for use.One-level screw rod 20 and second-stage worm 23 are all into a single integrated structure with it, and second-stage worm gear 8 is the key connecting form with swivel nut 11.Adopt rolling bearing that one-level worm screw 20, second-stage worm 23 are supported in the upper box 6 respectively, the ratio of gear of first-stage worm gear worm screw is 1:28, and the ratio of gear of second-stage worm gear worm screw is 1:68.Select for use rolling bearing 30,31 and globe thrust bearing 10 that swivel nut 11 is supported on the fixed head 29, for preventing each part and swivel nut 11 axial motions own on the swivel nut 11, the back of the body has set nut 7 on the swivel nut 11.Between upper box 6 and the lower box 4, between spline housing 5 and the upper box 6, all adopt bolt to connect between fixed head 29 and the upper box 6.Column 15 bottoms are processed with step, connect with fixed head 29, and the upper end is processed with screw thread, connect with entablature 18, are added with the nut that matches with column 15 upper end screw threads and fix.Upper holder seat 16 is housed between entablature 18 and the upper holder 19, also uses bolt, sensor 17 is housed in the upper holder seat 16.Between first-stage worm gear 21 and the second-stage worm 23 safety clutch 22 is housed, sensor 17 and safety clutch 22 all adopt standard component.
In order to make each driving member, tumbler runs well, in lower box 4, be provided with oil pump 24, oil pump 24 places on the oil pump seat 25, lubricating oil is sucked in the oil pump 24 from fuel tank by oil pipe, drain in the endoporus 32 of leading screw 9 by oil pipe again, be drilled with radially a plurality of holes on the leading screw 9, lubricating oil sprays through the hole, makes each bearing, each worm and gear obtain good lubricating.
Its mechanical part principle of work is: motor 1 connects electricity and rotates, through belt pulley 27, belt 26 and belt pulley 28 drive one-level worm screw 20 and rotate, because one-level worm screw 20 and first-stage worm gear 21 engagements, make with the coaxial second-stage worm 23 of first-stage worm gear 21 and rotate, and drive second-stage worm gear 8 is rotated, second-stage worm gear 8 drives swivel nut 11 again and rotates, because swivel nut 11 and its interior screw mandrel 9 thread connection, and the spline of leading screw 9 bottoms matches with the spline housing 5 that is fixed on the upper box 6, so leading screw 9 can move axially (promptly moving) and make on bottom platen 14, bottom platen 19,14 distances shorten, and place the measured piece on the bottom platen 14 to afford certain compressive stress.When fluctuation appears in pressure, place sensor 17 actions in the upper holder seat 16, sensor 17 is selected LOAD CELLS for use, and with sensor 17 connection control circuits 33, the output terminal of control circuit 33 and motor 1 join, with the rotation of control motor.
Amplifying circuit as shown in Figure 4, by operational amplifier U1, U2 and the resistance R 1 of joining thereof, R2, R6, R5, R3, R9, R4, capacitor C 5, C4, C20, C23, C17, telefault L6, L7 with operational amplifier U1, with resistance R 8, R10, R15, R16, R11, the R12 that operational amplifier U2 joins, capacitor C 21, C6, C24, C18, C1, C2, telefault L4, L7, diode D3 join and form.The phase contact of telefault L6, L7 connects the Vss point in the constant-current source circuit, the Vcc point of the phase contact of telefault L3, L4 in the constant-current source circuit.
Constant-current source circuit as shown in Figure 5, by transformer B1, rectification bridge block q1, coil L1, L2, capacitor C 15, triode T2, T3, T4, capacitor C 8, C9, C10, C11, C12, C13, C14, triode T1, operational amplifier IC and diode D1, the D2, resistance R 13, R14, R18, R19, the R17 that join with it, capacitor C 16, C22, coil L5, L8 join and form, exportable voltage vcc, Vss, V+, V-.
The output terminal of amplifying circuit " OUT " connects computer circuits as shown in Figure 6, is connected to operation keyboard, printer with computer CPU, display circuit, and the output terminal of computer CPU is succeeded electrical apparatus control circuit.
Control relay circuit is by transformer B2, rectification bridge block q2, capacitor C 25, C26, integrated regulator W provide DC voltage, be provided with photoelectrical coupler G1, G2, G3, G4, its input end is connecting resistance R20 respectively, R21, R22, R23, resistance R 20, R21, R22, the a1 of another termination computer CPU of R23, a2, a3, the a4 end, photoelectrical coupler G1, G2, G3, the output terminal of G4 meets the diode D4 that oppositely joins respectively, D5, D6, D7 is at diode D4, D5, D6, two ends of D7 are succeeded electrical equipment J1 respectively, J2, J3, J4, relay J 1, J2, J3, the normally opened contact of J4 is S3, a11; A10, a9; A10, a8; Meet auxiliary reclay J5 between a10, the a7, contact a11 and at 0, the normally opened contact of auxiliary reclay J5 is S1, A1; S2, A2; S3, A3; S4, PE, wherein A3, PE and Oil pump electrical machinery D join, with the control oil pump, contact A 1, A2, A3, a7, a8, a9, a10 join with FM circuit respectively, control relay circuit also is connected to shunt resistance R24, R25, is provided with contact a5, a6 in resistance R 24, R25 joint, contact a5, a6, a16, a17 by microswitch K1, K2 and computing machine join, and a16, a17 are also by microswitch K1, K2 and GND termination.
FM circuit is as shown in Figure 7: terminal A1, the A2 of frequency modulator, A3, a7, a8, a9, a10 join with control relay circuit respectively, and terminal a18, GND connect computer CPU, and terminal A4, A5, A6 connect motor 1, with the control motor speed.
The circuit working principle: by pressure transducer with the simulating signal of tested body pressured state by behind the amplifying circuit, being converted to digital quantity by A/D again inputs to computing machine and carries out computing, convert analog control signal pilot relay control circuit to by D/A again, control relay circuit control FM circuit, make the rotating speed of frequency modulator frequency change with control motor 1, change loading, reach the purpose of automatic constant stress loading.
When entire equipment breaks down, when build-up of pressure is excessive, safety clutch 22 become automatically " from " state, can guarantee device security.
Claims (4)
1, a kind of automatic constant stress loading nonmetallic materials pressure testing machine, it is characterized in that: lower box [4] joins with upper box [6], belt pulley [27] is contained on the axle of the motor [1] that places in the lower box [4], belt pulley [28] is contained in an end that is bearing in the one-level worm screw [20] that can freely rotate in the upper box [6], driving-belt [26] links with belt pulley [27] and [28] respectively, one-level worm screw [20] is meshed with first-stage worm gear [21], first-stage worm gear [21] is with to be bearing in the second-stage worm [23] that can freely rotate in the upper box [6] coaxial, second-stage worm [23] is meshed with second-stage worm gear [8], second-stage worm gear [8] be axially fixed at fixed head [29] and go up the swivel nut [11] that can freely rotate and join, fixed head [29] joins with upper box [6], leading screw [9] places in the swivel nut [11], leading screw [9] and swivel nut [11] thread connection, leading screw [9] bottom joins with the spline housing [5] that leading screw [9] rotates that can prevent that is fixed on the upper box [6], the top and the bottom platen of leading screw [9] join, column [15] joins with fixed head [29], entablature [18] joins with column [15], upper holder [19] joins with entablature [18], the sensor [17] that places in the upper holder seat [16] is housed between entablature [18] and the upper holder [19], be connected to control circuit [33] with sensor [17], control circuit [33] output termination motor [1].
2, automatic constant stress loading nonmetallic material testing machine, according to claim 1 is characterized in that: between described first-stage worm gear ［ 21 ］ and two utmost point worm screws ［ 23 ］ safety clutch ［ 22 ］ is housed.
3, automatic constant stress loading nonmetallic materials pressure testing machine according to claim 1 is characterized in that: the microcomputer that described control circuit ［ 33 ］ is joined by amplifying circuit that joins with sensor ［ 17 ］ and amplifying circuit, the control relay circuit that joins with microcomputer, keyboard, display circuit, the FM circuit of joining with control relay circuit are formed.
4, automatic constant stress loading nonmetallic materials pressure testing machine according to claim 3 is characterized in that: also be connected to printer with microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93229689 CN2177942Y (en) | 1993-11-12 | 1993-11-12 | Auto-constant stress loading tester for nonmetal material pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93229689 CN2177942Y (en) | 1993-11-12 | 1993-11-12 | Auto-constant stress loading tester for nonmetal material pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2177942Y true CN2177942Y (en) | 1994-09-21 |
Family
ID=33806511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93229689 Expired - Fee Related CN2177942Y (en) | 1993-11-12 | 1993-11-12 | Auto-constant stress loading tester for nonmetal material pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2177942Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435505A (en) * | 2011-08-31 | 2012-05-02 | 沭阳县科兴公路仪器有限责任公司 | Pavement material strength tester with double worms |
| CN104849146A (en) * | 2015-06-01 | 2015-08-19 | 上海市城市建设设计研究总院 | Air pressure loading device for static lateral pressure coefficient K0 meter |
| CN106979889A (en) * | 2017-04-13 | 2017-07-25 | 镇江市建科工程质量检测中心有限公司 | Construction material intensity detecting device |
| CN107328520A (en) * | 2017-07-11 | 2017-11-07 | 北京恒兴利达仪器有限公司 | The automated calibration system and method for a kind of wireless work(figure test terminal |
-
1993
- 1993-11-12 CN CN 93229689 patent/CN2177942Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435505A (en) * | 2011-08-31 | 2012-05-02 | 沭阳县科兴公路仪器有限责任公司 | Pavement material strength tester with double worms |
| CN104849146A (en) * | 2015-06-01 | 2015-08-19 | 上海市城市建设设计研究总院 | Air pressure loading device for static lateral pressure coefficient K0 meter |
| CN106979889A (en) * | 2017-04-13 | 2017-07-25 | 镇江市建科工程质量检测中心有限公司 | Construction material intensity detecting device |
| CN107328520A (en) * | 2017-07-11 | 2017-11-07 | 北京恒兴利达仪器有限公司 | The automated calibration system and method for a kind of wireless work(figure test terminal |
| CN107328520B (en) * | 2017-07-11 | 2023-10-20 | 西安海诚石油科技有限公司 | Automatic calibration system and method for wireless indicator diagram test terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |