CN203455239U - Loading mechanism of large-tonnage mechanical property testing machine for refractory materials - Google Patents
Loading mechanism of large-tonnage mechanical property testing machine for refractory materials Download PDFInfo
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- CN203455239U CN203455239U CN201320447243.0U CN201320447243U CN203455239U CN 203455239 U CN203455239 U CN 203455239U CN 201320447243 U CN201320447243 U CN 201320447243U CN 203455239 U CN203455239 U CN 203455239U
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Abstract
The utility model discloses a loading mechanism of a large-tonnage mechanical property testing machine for refractory materials. The loading mechanism comprises a frame consisting of two upright posts (3) arranged on a base box (1) of the testing machine and transverse beams (4) arranged on the upright posts (3), wherein a trapezoidal lead screw pair pressurization device used for applying pressure to a test sample is arranged on the transverse beams and comprises a servo motor (7), a worm (9), a worm gear (10), a lead screw, a pressure sensor (12) and a test pressure rod (13); the servo motor is connected with the worm through a coupler (6); the worm (9) is matched with the worm gear; a nut is arranged on the inner side of a central hole of the worm gear; a lead screw is matched with the nut and is connected with the pressure sensor (12) through a flange (11); and the pressure sensor is connected with the test pressure rod (13). The loading mechanism is stable and reliable in speed regulation, high in precision, small in size and light in weight and is suitable for a normal-temperature mechanical property testing machine as well as a high-temperature mechanical property testing machine.
Description
Technical field
The utility model belongs to testing tool class, relates to the testing machine, particularly a kind of adding mechanism of large-tonnage fire resistive material testing machine for mechanical properties of test fire resistive material mechanical property.
Background technology
The performances such as the normal temperature of fire resistive material and high-temperature pressure-proof, ess-strain, elastic modulus are its important usability and mechanical property.
At present, the testing machine of test mechanical property, mainly contains fluid pressure type and mechanical type.Loading direction is divided into the lower loaded type that applies from bottom to top power and the upper loaded type that applies from the top down power.Fire resistive material mechanical behavior under high temperature mainly adopts the testing machine of loaded type, its adding mechanism mainly contains two kinds of forms: a kind of is single-stage or multi-grade lever formula adding mechanism, simple in structure, but its loading depression bar is located by connecting rod, and pressure transducer is arranged between connecting rod and lever, the hinge axis of stationary links necessarily has friction force like this, cannot overcome; Meanwhile, when sample plus-pressure produces amount of deflection, loading depression bar can be not vertical with connecting rod certainty, and at this moment connecting rod will produce two component, must affect test result.Lever adding mechanism, due to loading arm stability problem, is not suitable for large-tonnage and dynamically loads continuously.
Another kind is frame-type double lead-screw adding mechanism, its structure is: comprise base member case, motor and multi-stage speed-reducing machine are installed in base member case, hollow column is installed in both sides in base member case, a vertical leading screw is respectively installed in hollow column, hollow column top is fixed cross beam, moving crossbeam moving up and down is installed in fixed cross beam below, there is the screw matching with vertical leading screw at the two ends of moving crossbeam, two vertical leading screws are through moving the two ends screw of crossbeam and matching with it, and the below, middle part of moving crossbeam is provided with pressure transducer, the pressure bar of load application; Work as electric machine rotation, by multi-stage speed-reducing machine, drive two vertical leading screws to rotate, vertical leading screw drives screw to move up and down, and crossbeam is moved up and down, and realizes load application in test sample.Mechanical behavior under high temperature testing machine is on the basis of ambient temperature mechanical properties testing machine, in the surrounding of sample, hot test stove is set.
The load maintainer of existing frame-type testing machine, adopted double lead spiral mode of transfer force, its weak point is: the 1. rotation of two vertical leading screws, drive moving crossbeam to move up and down, the poor synchronization of two rhizoid thick sticks, thereby a little difference can cause moving crossbeam to move up and down time, imbalance, affects the stability of pressure process.2. motor and multi-stage speed-reducing machine are arranged in the base member case of testing machine bottom, drive the rotation of two vertical leading screws by Timing Belt or multiple sets of teeth wheel simultaneously, and because machining precision is difficult to ensure, installation requirement is higher, the synchronism that power is transmitted is poor, loads unstable.3. motor and multi-stage speed-reducing machine are in the base member case of testing machine bottom, on one end mounting seat case of the vertical leading screw of driving force, the other end is arranged on fixed cross beam, vertical leading screw length is longer, during transmission large-tonnage power, need larger volume, not only power transmission is not steady, but also causes testing machine structure huge.
motor is single-phase or three phase electric machine, and by frequency converter timing, adjustable extent is narrow, low precision.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming such as not steady, bulky that multi-grade lever in prior art loads the unstable and double lead spiral adding mechanism motor driving of the arm of force, frequency control, multi-stage speed-reducing, two cocainine thick stick auxiliary driving load applications, and a kind of adding mechanism of large-tonnage fire resistive material testing machine for mechanical properties is provided.
The purpose of this utility model can realize by following technical scheme: it comprises that two by being arranged on the column on tester base case and being arranged on the framework that the crossbeam on column forms, and is provided with the secondary pressue device of trapezoidal screw for exerting pressure to sample on crossbeam.
The secondary pressue device of described trapezoidal screw comprises servomotor, worm and worm wheel, trapezoidal screw and pressure transducer, test pressure bar, servomotor is connected with worm screw by shaft coupling, worm and worm wheel coordinate, the center pit inner side of worm gear is screw, leading screw coordinates with screw, leading screw is by flange Bonding pressure sensor, pressure transducer joint test pressure bar.
Between described servomotor and shaft coupling, by speed reduction unit, connect.
The utility model has the advantage of: 1. servomotor is originally as stepless speed regulation, and speed governing is steady, and common electric machine frequency converter timing and the speed governing of multi-stage speed-reducing machine; The servomotor (or adding first stage decelerator) of take replaces common electric machine (frequency control or multi-stage speed reducer) as driving unit, steadily reliable.2. servomotor output area is wide, and adjustable accuracy is high, and the unperturbed of realizing constant stress loading, permanent displacement loading, constant stress-permanent displacement compound loading switches.3. with a rhizoid thick stick and a screw, coordinate and replace two rhizoid thick sticks, screw to coordinate, just do not have imbalance, jiggly problem.4. common electric machine adds multi-stage speed reducer, and volume is large, and Heavy Weight takes the space of base member case, and servomotor and first class reducer volume are little, lightweight, are arranged on crossbeam, vacate the free space of base member case.5. the utility model had both been applicable to ambient temperature mechanical properties testing machine, was also applicable to mechanical behavior under high temperature testing machine.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model.
In figure, 1, base member case, 2, trial furnace body of heater, 3, column, 4, crossbeam, 5, speed reduction unit, 6, shaft coupling, 7, servomotor, 8, trapezoidal screw, 9, worm screw, 10, worm gear, 11, flange, 12, pressure transducer, 13, test pressure bar.
Embodiment
Accompanying drawings specific embodiment of the utility model.
As shown in drawings: comprise that two by being arranged on the column 3 on tester base case 1 and being arranged on the framework that the crossbeam 4 on column 3 forms, on crossbeam 4, be provided with the pressue device for exerting pressure to sample, described device for exerting comprises servomotor 7, shaft coupling 6, worm screw 9 and worm gear 10, trapezoidal screw 8 and pressure transducer 12, test pressure bar 13.Between servomotor 7 and shaft coupling 6, can directly connect, also can be connected with shaft coupling 6 by speed reduction unit 5, between the servomotor 7 of the present embodiment and shaft coupling 6, by speed reduction unit 5, connect.Shaft coupling 6 is connected with worm screw 9, worm screw 9 connects worm gear 10, the trapezoidal screw of the center pit of worm gear 10 for matching with trapezoidal screw 8, trapezoidal screw 8 forms trapezoidal screw pair with the trapezoidal screw of worm gear 10 center pits, the lower end of trapezoidal screw 8 is with flange 11 Bonding pressure sensors 12,12 times joint test pressure bars 13 of pressure transducer.
Key points for operation:
1. sample is packed in trial furnace body of heater 2, by temperature increasing schedule, be heated to test temperature.
2. start servomotor 8, and stepless speed regulation is adjusted to required rotating speed; Servomotor 7 drives worm screw 9, worm gear 10 by speed reduction unit 5, shaft coupling 6, trapezoidal screw in worm gear 10 drives the trapezoidal screw 8 being mated to move down, the pressure transducer 12 that trapezoidal screw 8 lower ends connect by flange 11 also just moves down thereupon, pressure driver 12 motoring ring test pressure bars 13, exert pressure to sample.
Claims (3)
1. the adding mechanism of a large-tonnage fire resistive material testing machine for mechanical properties, it is characterized in that: it comprises that two by being arranged on the column (3) on tester base case (1) and being arranged on the framework that the crossbeam (4) on column (3) forms, on crossbeam (4), be provided with the secondary pressue device of trapezoidal screw for exerting pressure to sample.
2. the adding mechanism of large-tonnage fire resistive material testing machine for mechanical properties according to claim 1, the secondary pressue device of described trapezoidal screw comprises servomotor (7), worm screw (9) and worm gear (10), trapezoidal screw and pressure transducer (12), test pressure bar (13), servomotor (7) is connected with worm screw (9) by shaft coupling (6), worm screw (9) and worm gear (10) coordinate, the center pit inner side of worm gear (10) is screw, leading screw coordinates with screw, leading screw is by flange (11) Bonding pressure sensor (12), pressure transducer (12) joint test pressure bar (13).
3. the adding mechanism of large-tonnage fire resistive material testing machine for mechanical properties according to claim 2, is characterized in that: between described servomotor (7) and shaft coupling (6), by speed reduction unit (5), connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320447243.0U CN203455239U (en) | 2013-07-25 | 2013-07-25 | Loading mechanism of large-tonnage mechanical property testing machine for refractory materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320447243.0U CN203455239U (en) | 2013-07-25 | 2013-07-25 | Loading mechanism of large-tonnage mechanical property testing machine for refractory materials |
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| Publication Number | Publication Date |
|---|---|
| CN203455239U true CN203455239U (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320447243.0U Expired - Lifetime CN203455239U (en) | 2013-07-25 | 2013-07-25 | Loading mechanism of large-tonnage mechanical property testing machine for refractory materials |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677940A (en) * | 2015-01-30 | 2015-06-03 | 中国矿业大学 | Reinforced concrete shell fire resistance testing system |
| CN108693038A (en) * | 2018-07-24 | 2018-10-23 | 鞍山星源达科技有限公司 | Metallurgical or coking material performance measurement experiment increase the load automatically device and method |
| CN109115627A (en) * | 2018-09-13 | 2019-01-01 | 济南联工测试技术有限公司 | A kind of high-accuracy wedge compression detection device |
| CN112525503A (en) * | 2020-11-04 | 2021-03-19 | 中国航发贵州黎阳航空动力有限公司 | A multi-direction mechanical properties detection device for aeroengine part |
-
2013
- 2013-07-25 CN CN201320447243.0U patent/CN203455239U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677940A (en) * | 2015-01-30 | 2015-06-03 | 中国矿业大学 | Reinforced concrete shell fire resistance testing system |
| CN108693038A (en) * | 2018-07-24 | 2018-10-23 | 鞍山星源达科技有限公司 | Metallurgical or coking material performance measurement experiment increase the load automatically device and method |
| CN108693038B (en) * | 2018-07-24 | 2023-07-14 | 鞍山星源达科技有限公司 | Automatic load loading device and method for metallurgical or coked material performance measurement experiment |
| CN109115627A (en) * | 2018-09-13 | 2019-01-01 | 济南联工测试技术有限公司 | A kind of high-accuracy wedge compression detection device |
| CN109115627B (en) * | 2018-09-13 | 2024-01-30 | 济南联工测试技术有限公司 | High-precision wedge pressure detection equipment |
| CN112525503A (en) * | 2020-11-04 | 2021-03-19 | 中国航发贵州黎阳航空动力有限公司 | A multi-direction mechanical properties detection device for aeroengine part |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20140226 |
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| CX01 | Expiry of patent term |