CN219455782U - Double-piston lower loading device for refractory material loading soft creep test furnace - Google Patents
Double-piston lower loading device for refractory material loading soft creep test furnace Download PDFInfo
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- CN219455782U CN219455782U CN202223491963.5U CN202223491963U CN219455782U CN 219455782 U CN219455782 U CN 219455782U CN 202223491963 U CN202223491963 U CN 202223491963U CN 219455782 U CN219455782 U CN 219455782U
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Abstract
The utility model relates to the technical field of soft creep test furnaces, in particular to a double-piston lower loading device for a soft creep test furnace for refractory materials. The device comprises a dynamometer, a first hydraulic cylinder, a second hydraulic cylinder, a hanging rack, a weight and a lifting device; the piston rod of the first hydraulic cylinder is connected with the dynamometer, the dynamometer is connected with the pressurizing rod, the pressurizing rod applies pressure to the sample, the piston rod and the dynamometer are the same as the axis of the pressurizing rod, and the axis is vertical; the first hydraulic cylinder and the second hydraulic cylinder are communicated through a connecting pipe; the weight is placed on the hanging frame, and pressure is applied to liquid in the second hydraulic cylinder through the hanging frame; the lifting device is connected with the hanging frame and drives the hanging frame and the weight to lift. The installation volume is small, the space is saved, the labor is saved, the maintenance is easy, the operation is easy, the energy is saved, the loading mode of the loading soft creep test furnace can be obviously optimized, and the operation personnel test is convenient.
Description
Technical Field
The utility model relates to the technical field of soft creep test furnaces, in particular to a double-piston lower loading device for a soft creep test furnace for refractory materials.
Background
The softening temperature under load and the compressive creep are important indexes for evaluating the properties of the refractory material. The softening temperature under load is a temperature at which the refractory material undergoes a predetermined deformation under a predetermined temperature rise condition when subjected to a constant load. Pressure creep refers to isothermal deformation of a refractory material over time at a constant pressure. Therefore, constant pressure, accurate temperature, accurate displacement and the like are important characteristics of the load softening temperature and the compressive creep test instrument.
The existing soft-loading instrument is evaluated from the aspect of test efficiency, multiple samples are better than single samples, and the lower loading is better than the upper loading from the aspects of convenient use and maintenance, but for the soft-loading instrument with multiple samples and lower loading modes, the loading mode is particularly important, and the conventional steel block gravity loading mode is heavy and large in volume, so that the samples cannot be arranged compactly, the uniformity of furnace temperature is poor, and the furnace body of the heating furnace is overlarge.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides the duplex piston lower loading device for the refractory material soft creep test furnace, which has the advantages of small installation volume, space saving, labor saving, easy maintenance, easy control and energy saving, can obviously optimize the loading mode of the soft creep test furnace, is convenient for an operator to test, and improves the quality inspection and the control capability level of batch refractory material products.
In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:
a duplex piston lower loading device for a refractory material loading soft creep test furnace comprises a dynamometer, a first hydraulic cylinder, a second hydraulic cylinder, a hanging frame, a weight and a lifting device; the piston rod of the first hydraulic cylinder is connected with the dynamometer, the dynamometer is connected with the pressurizing rod, the pressurizing rod applies pressure to the sample, the piston rod and the dynamometer are the same as the axis of the pressurizing rod, and the axis is vertical; the first hydraulic cylinder and the second hydraulic cylinder are communicated through a connecting pipe; the weight is placed on the hanging frame, and pressure is applied to liquid in the second hydraulic cylinder through the hanging frame; the lifting device is connected with the hanging frame and drives the hanging frame and the weight to lift.
Further, the load cell is a digital load cell.
Further, the lifting device is a winch, an electric push rod or a hydraulic push rod.
Further, the winch is an electric winch.
Further, the second hydraulic cylinder has a smaller bore than the first hydraulic cylinder.
Further, the test furnace is a down-loading test furnace and is a single-sample or multi-sample test furnace.
Compared with the prior art, the utility model has the beneficial effects that:
1) The hydraulic cylinder has small occupied space in the horizontal two-dimensional direction, a plurality of loading devices can be compactly arranged below one test furnace, the center distance of samples can be an ideal minimum distance (100 mm), one furnace can simultaneously carry out soft-loading/creep testing on a plurality of samples of a batch of products, and the detection efficiency can be improved by at least 2-4 times compared with the traditional single-sample test furnace.
2) According to the utility model, the cylinder diameter of the second hydraulic cylinder is smaller than that of the first hydraulic cylinder, a downward smaller constant force is applied to the second hydraulic cylinder through the weight, a larger upward constant force can be output from the first hydraulic cylinder, and the weight mass required to be applied can be reduced by times compared with that of the first hydraulic cylinder when the weight is directly loaded, so that the hydraulic cylinder is more convenient to use and maintain.
3) According to the utility model, the lifting device is used for lifting and dropping the weight, so that the load can be automatically applied to or removed from the sample, the operation that the weight needs to be added and removed when a tester performs each test is omitted, and the labor is saved and the safety is ensured.
4) The lifting device is connected with the test control system, so that the load can be automatically removed at the high temperature of the test end or the fault furnace shutdown, the adhesion between the cooled sample and the gasket is prevented, and the service life of the gasket is prolonged.
5) The utility model is provided with a digital dynamometer, and the force applied to the sample can be accurately measured in the whole test process through the online digital dynamometer.
Drawings
FIG. 1 is a schematic front view of the structure of the present utility model;
fig. 2 is a schematic side view of the structure of the present utility model.
In the figure: 1-a bracket; 2-testing the furnace body; 3-digital dynamometer; 4-a first hydraulic cylinder; 5-connecting pipes; 6-weight; 7-hanging frames; 8-a second hydraulic cylinder; 9-electric winding.
Detailed Description
Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.
In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 and 2, the refractory material soft creep test furnace comprises a test furnace body 2 and a bracket 1 fixedly connected to the top and the bottom of the test furnace body 2. The test furnace is a downward loading test furnace and is provided with three test units, and each test unit comprises a sample, a pressurizing rod and a loading device.
A duplex piston lower loading device for a refractory material loading soft creep test furnace comprises a digital dynamometer 3, a first hydraulic cylinder 4, a second hydraulic cylinder 8, a hanging frame 7, a weight 6 and an electric winch 9. The electric winch 9 adopts a miniature electric winch.
The first hydraulic cylinder 4 is vertically arranged, the bottom of the cylinder body of the first hydraulic cylinder 4 is fixed on the bottom cross beam of the bracket 1 below the test furnace body 2, the piston rod of the first hydraulic cylinder 4 is connected with the digital dynamometer 3, the digital dynamometer 3 is connected with a pressurizing rod, the pressurizing rod applies pressure to a sample, the piston rod and the digital dynamometer 3 are the same as the axis of the pressurizing rod, and the axis is vertical.
The cylinder bodies of the first hydraulic cylinder 4 and the second hydraulic cylinder 8 are communicated through the connecting pipe 5, so that the pressure in the cylinder of the second hydraulic cylinder 8 can be transmitted to the first hydraulic cylinder 4.
The second hydraulic cylinder 8 is vertically arranged, the top end of a piston rod of the second hydraulic cylinder is positioned below the bottom surface of the top of the hanging frame 7, and a hanging ring is arranged on the top surface of the top of the hanging frame 7. The base of the electric winch 9 is fixedly connected to the top of the bracket 1, the end part of a steel wire rope of the electric winch 9 is fixedly connected to the hanging ring, and the electric winch 9 drives the hanging frame 7 and the weight 6 to lift. The weight 6 is placed at the bottom of the hanging frame 7, and the weight 6 placed on the hanging frame 7 can apply pressure to a piston rod of the second hydraulic cylinder 8 through the hanging frame 7, so as to apply pressure to a liquid medium in the second hydraulic cylinder 8.
Further, the second hydraulic cylinder 8 has a smaller bore than the first hydraulic cylinder 4.
When the utility model works, the operation steps are as follows:
1) A sample was placed on the pad at the top of the lower press bar.
2) When the hanger 7 and the weight 6 below are pressed on the piston of the second hydraulic cylinder 8, the piston of the second hydraulic cylinder 8 moves downwards, the liquid in the second hydraulic cylinder 8 enters the first hydraulic cylinder 4 through the connecting pipe 5, the piston of the first hydraulic cylinder 4 moves upwards in a straight line under the action of the liquid pressure, and after the sample is completely contacted with the upper pressurizing rod, the electric winch 9 is stopped after a certain time delay, so that the mass of the weight 6 is completely applied on the piston of the second hydraulic cylinder 8. At this time, the weight 6 will apply a certain pressure to the sample through the second hydraulic cylinder 8, the first hydraulic cylinder 4, the digital dynamometer 3 and the lower pressurizing rod in sequence.
3) The amount of pressure applied to the sample is adjusted by increasing or decreasing the mass of the weight 6 to be equal to the set applied force value.
4) Setting a heating curve, and starting a heating circuit to heat the test furnace. And recording the height change measurement data of the sample at different temperatures and heat preservation time in the heating process.
5) And calculating a test result according to the test data according to the load soft and creep test method standard.
The hydraulic cylinder has small occupied space in the horizontal two-dimensional direction, a plurality of loading devices can be compactly arranged below one test furnace, the center distance of samples can be an ideal minimum distance (100 mm), one furnace can simultaneously carry out soft-loading/creep testing on a plurality of samples of a batch of products, and the detection efficiency can be improved by at least 2-4 times compared with the traditional single-sample test furnace.
According to the utility model, the cylinder diameter of the second hydraulic cylinder 8 is smaller than that of the first hydraulic cylinder 4, a downward smaller constant force is applied to the second hydraulic cylinder 8 through the weight, a larger upward constant force can be output from the first hydraulic cylinder 4, and the weight mass required to be applied can be reduced by times compared with that of the weight when the weight is directly loaded, so that the hydraulic cylinder is more convenient to use and maintain.
According to the utility model, through lifting and falling of the electric winch 9 to the weight 6, the load can be automatically applied or removed from the sample, so that the operation that a tester needs to add and remove the weight 6 when testing each time is omitted, and the electric winch is labor-saving and safe.
Through the connection of the electric winch 9 and the test control system, the load can be automatically removed at the high temperature of the end of the test or the fault shutdown, so that the adhesion between the cooled sample and the gasket is prevented, and the service life of the gasket is prolonged.
The utility model is provided with a digital load cell 3 by means of which accurate measurements of the forces applied to the test specimen can be carried out throughout the test.
The utility model has the advantages of small installation volume, space saving, labor saving, easy maintenance, easy operation and control, energy saving and high automation degree, can obviously optimize the loading mode of the soft creep test furnace, and is convenient for operators to test, so as to improve the quality inspection and control capability level of batch refractory material products.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (6)
1. A duplex piston lower loading device for a refractory material loading soft creep test furnace is characterized in that: the device comprises a dynamometer, a first hydraulic cylinder, a second hydraulic cylinder, a hanging rack, a weight and a lifting device; the piston rod of the first hydraulic cylinder is connected with the dynamometer, the dynamometer is connected with the pressurizing rod, the pressurizing rod applies pressure to the sample, the piston rod and the dynamometer are the same as the axis of the pressurizing rod, and the axis is vertical; the first hydraulic cylinder and the second hydraulic cylinder are communicated through a connecting pipe; the weight is placed on the hanging frame, and pressure is applied to liquid in the second hydraulic cylinder through the hanging frame; the lifting device is connected with the hanging frame and drives the hanging frame and the weight to lift.
2. The dual piston down loading device for a refractory soft creep test furnace according to claim 1, wherein: the dynamometer is a digital dynamometer.
3. The dual piston down loading device for a refractory soft creep test furnace according to claim 1, wherein: the lifting device is a winch, an electric push rod or a hydraulic push rod.
4. A twin piston down loading apparatus for a refractory soft creep test furnace according to claim 3, wherein: the winch is an electric winch.
5. The dual piston down loading device for a refractory soft creep test furnace according to claim 1, wherein: the second hydraulic cylinder has a smaller cylinder diameter than the first hydraulic cylinder.
6. The dual piston down loading device for a refractory soft creep test furnace according to claim 1, wherein: the test furnace is a down-loading test furnace and is a single-sample or multi-sample test furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223491963.5U CN219455782U (en) | 2022-12-27 | 2022-12-27 | Double-piston lower loading device for refractory material loading soft creep test furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223491963.5U CN219455782U (en) | 2022-12-27 | 2022-12-27 | Double-piston lower loading device for refractory material loading soft creep test furnace |
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| Publication Number | Publication Date |
|---|---|
| CN219455782U true CN219455782U (en) | 2023-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223491963.5U Active CN219455782U (en) | 2022-12-27 | 2022-12-27 | Double-piston lower loading device for refractory material loading soft creep test furnace |
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| CN (1) | CN219455782U (en) |
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2022
- 2022-12-27 CN CN202223491963.5U patent/CN219455782U/en active Active
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