CN218726819U

CN218726819U - High-temperature expansion tester

Info

Publication number: CN218726819U
Application number: CN202222768725.8U
Authority: CN
Inventors: 曾昊岚; 曹继强; 远帅杰; 曾少礼
Original assignee: Luoyang Hete Instrument Equipment Co ltd
Current assignee: Luoyang Hete Instrument Equipment Co ltd
Priority date: 2022-10-20
Filing date: 2022-10-20
Publication date: 2023-03-24
Anticipated expiration: 2032-10-20

Abstract

The utility model provides a high temperature expansion apparatus, relate to the test instrument field, which comprises a test bench, the setting is at the test frame on the test bench with set up the heating furnace in the test frame, be equipped with on the test bench and stretch into the lower excellent of furnace chamber in order to support the sample from the heating furnace bottom, the heating furnace top is equipped with can stretch into the furnace chamber in order to exert pressure's last pressure stick to the sample from the heating furnace top, the upper end of going up the pressure stick is equipped with carries a yard platform to it applys pressure, it is connected with the counter weight assembly pulley of exerting tensile force to it to carry a yard platform, the counter weight assembly includes the fixed pulley, haulage rope and counter weight hammer, the fixed pulley is fixed on the test frame, the one end of haulage rope is connected on carrying a yard platform, the other end is walked around the fixed pulley after and is connected with the counter weight hammer. The utility model is used for solve because the year sign indicating number platform of last pressure stick and holding weight all has certain quality, and can't carry out zero load or small load test's technical problem.

Description

High-temperature expansion tester

Technical Field

The utility model relates to a test instrument field, specific high temperature expansion apparatus that says so.

Background

The object is subject to the phenomenon of expansion and contraction due to temperature changes, the ability of which to change in length measurements per unit temperature change under constant pressure is often expressed in terms of the coefficient of thermal expansion. The coefficient of thermal expansion is a very important physical property of a material.

The applicant has previously filed a utility model entitled "a full-automatic load softening temperature and compressive creep tester", which can measure load softening temperature and compressive creep of a sample, and in which both an upper pressing rod for applying pressure to the sample and a weight-bearing code-bearing platform have a certain mass, and thus, tests of zero load or small load cannot be performed. When the thermal expansion coefficient of a material is measured, zero load or a slight load needs to be applied to a material sample, and therefore, the device cannot measure the thermal expansion coefficient.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a high temperature expansion apparatus to solve among the prior art because last pressure stick and hold the carrier yard platform of weight all have certain quality, and can't carry out zero load or small load test's technical problem.

In order to solve the technical problem, the utility model discloses a concrete scheme does: the utility model provides a high temperature expansion apparatus, which comprises a test bench, set up test frame on the test bench and set up the heating furnace in test frame, be equipped with on the test bench and stretch into the lower excellent of furnace chamber in order to support the sample from the heating furnace bottom, the heating furnace top is equipped with and stretches into the last pressure stick of furnace chamber in order to exert pressure to the sample from the heating furnace top, the upper end of going up the pressure stick is equipped with the yard platform of carrying of exerting pressure to it, it is connected with the counter weight assembly pulley of exerting tensile force to it to carry the yard platform, the counter weight assembly includes the fixed pulley, haulage rope and counter weight hammer, the fixed pulley is fixed on test frame, the one end of haulage rope is connected on carrying the yard platform, the other end is connected with the counter weight hammer after walking around the fixed pulley.

As a further optimization of the technical scheme, the loading platform is connected with two counterweight pulley blocks, the two counterweight pulley blocks are symmetrically arranged along the heating furnace, and fixed pulleys of the counterweight pulley blocks are fixed on the upper part of the test frame.

As a further optimization of the technical scheme, the code carrying platform is connected with a vertical lifting mechanism for driving the code carrying platform to lift.

As the further optimization of above-mentioned technical scheme, vertical elevating system includes vertical cylinder, and the telescopic link of vertical cylinder can support and carry a yard platform in order to drive the lower surface that carries a yard platform and reciprocate.

As the further optimization of the technical scheme, one side of the vertical cylinder is provided with a guide pillar, a guide sleeve penetrating through the guide pillar is arranged on the code carrying platform, and a cylinder supporting sleeve is fixedly arranged on the guide pillar.

As the further optimization of the technical scheme, the upper surface of the test bed is provided with a horizontal slide rail, and the heating furnace is arranged on the horizontal slide rail in a sliding manner.

As a further optimization of the technical scheme, the bottom of the lower support rod is provided with a vertical lifting module for driving the lower support rod to lift.

As a further optimization of the technical scheme, the vertical lifting module comprises a driving motor, a vertical slide rail and a vertical slide block arranged on the vertical slide rail, the vertical slide rail is arranged below the test bed, and the lower support rod is fixedly arranged on the vertical slide block.

As the further optimization of the technical scheme, a displacement sensor capable of measuring the displacement of the code carrying platform is arranged above the code carrying platform.

As a further optimization of the technical scheme, a plurality of lower support rods are arranged on the test bed at intervals, the same number of code carrying platforms are correspondingly arranged, and the upper press rod and the lower support rods connected to each code carrying platform correspondingly form a space for placing a sample.

Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model discloses a connect the counter weight assembly pulley on carrying a yard platform, subtract the weight that carries a yard platform, go up isobaric stick anchor clamps of pressure stick of weight through the counter weight assembly pulley core, give the weight of sample loading how much like this, can realize through the weight, can also realize the test of zero load or small load, can carry out the accuracy measurement to the coefficient of thermal expansion of sample. Therefore, the multifunctional test of the thermal expansion coefficient, the loading softening temperature and the compressive creep deformation is realized through one device, one machine has multiple functions, and the test diversification requirements of a user are met.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a side view of the present invention;

reference numerals: 1. the test bed comprises a test frame, 2, a heating furnace, 3, an upper pressing rod, 4, an upper gasket, 5, a sample, 6, a lower gasket, 7, a lower supporting rod, 8, a test bed, 9, a vertical sliding block, 10, a vertical sliding rail, 11, a driving motor, 12, a counterweight hammer, 13, a horizontal sliding rail, 14, a guide pillar, 15, a cylinder supporting sleeve, 16, a vertical cylinder, 17, a code loading platform, 18, weights, 19, a displacement sensor, 20, a traction rope, 21, a fixed pulley, 22 and a guide sleeve.

Detailed Description

As shown in figure 1, the utility model relates to a high temperature expansion apparatus, including test bench 8, the test frame 1 of setting on test bench 8 and the heating furnace 2 of setting in test frame 1.

The test frame 1 is of a gantry frame structure and comprises a top wall and two opposite side walls, the top ends of the two side walls are connected with the top wall, and the bottom ends of the two side walls are fixedly arranged on the test bed 8.

The heating furnace 2 is a cuboid integral furnace body, a lower support rod 7 which can extend into the furnace cavity from the bottom of the heating furnace 2 to support the sample 5 is arranged on the test bed 8, and an upper pressing rod 3 which can extend into the furnace cavity from the top of the heating furnace 2 to apply pressure to the sample 5 is arranged above the heating furnace 2. Specifically, the bottom and the top of the bottom of the heating furnace 2 are respectively provided with a through hole, and the through hole at the top and the through hole at the bottom are communicated with the furnace chamber. The upper end of the lower support rod 7 can extend into the heating furnace 2 from a through hole at the bottom of the heating furnace 2, the upper end of the lower support rod 7 is further provided with a lower gasket 6, a sample 5 to be detected is placed on the lower gasket 6, the lower end of the upper pressure rod 3 can extend into the heating furnace 2 from a through hole at the top of the heating furnace 2, the lower end of the upper pressure rod 3 is provided with an upper gasket 4, and the upper gasket 4 moves downwards along with the upper pressure rod 3 so that the lower surface of the upper gasket 4 can contact with the sample 5.

The upper end of the upper press rod 3 is provided with a code carrying platform 17 for applying pressure to the upper press rod, weights 18 with different weights are selectively placed on the code carrying platform 17 according to the requirements of an actual test, and the load applied to the sample 5 by the upper press rod 3 is adjusted through the weights with different weights. The utility model discloses in weight 18 that adopts by possessing 18 production qualification producers of weight and take the place of processing to third party measurement authentication provides the measurement certificate, facilitates for laboratory authentication work, can improve the accuracy of loading load in the process of the test. A displacement sensor 19 capable of measuring the displacement of the code carrying platform 17 is arranged above the code carrying platform 17, the displacement sensor 19 can further measure the volume change of the sample 5 through the displacement change of the code carrying platform 17, a temperature thermocouple (not shown in the figure) for measuring the temperature in the furnace cavity is further arranged in the heating furnace 2, and the specific arrangement modes of the displacement sensor 19 and the temperature thermocouple are conventional technical means and are not repeated herein.

Because carry a yard platform 17 and go up and press stick 3 all to have certain quality, can cause to have certain initial load promptly when carrying out the test under the condition of not placing the weight on carrying a yard platform 17, lead to the test of unable zero load or small load of realizing, for this reason, the utility model discloses well carry a yard platform 17 to be connected with and apply tensile counter weight assembly pulley to it.

The counterweight pulley block comprises a fixed pulley 21, a traction rope 20 and a counterweight hammer 12, the fixed pulley 21 is fixed on the test frame 1, one end of the traction rope 20 is connected to the loading platform 17, and the other end of the traction rope is connected with the counterweight hammer 12 after bypassing the fixed pulley 21. The number of the counterweight pulley blocks is two, and in order to ensure that the tension borne by the loading platform 17 is balanced, the positions of the traction ropes 20 connected to the loading platform 17 are symmetrically arranged relative to the upper pressing rod 3. Because when carrying out the test experiment, heating furnace 2 is located and is pressed excellent 3 under, consequently two counter weight assembly pulleys set up along heating furnace 2 symmetry. The fixed pulleys 21 of the counterweight pulley block are fixed on the upper part of the test frame 1, namely, the two fixed pulleys 21 are fixed on the top wall of the test frame 1 and positioned on the inner side of the top wall. The weight of the weight loading platform 17 of the weight 18 and the weight of the upper pressing rod 3 can be nuclear-subtracted through the counterweight pulley block, so that the weight of the sample 5 can be loaded, the test of zero load or micro load can be realized through the weight 18, and the thermal expansion coefficient of the sample 5 can be accurately measured. Because the utility model discloses the load that middle and upper pressure stick 3 was applyed to the sample can be followed zero and offered and increase gradually, consequently this apparatus can realize the multifunctional test that an equipment realized coefficient of thermal expansion, loading softening temperature, pressure creep, and a tractor serves several purposes satisfies the diversified requirement of user's test.

The loading platform 17 is connected with vertical lifting mechanisms for driving the loading platform to lift, and the two groups of vertical lifting mechanisms are oppositely arranged on the inner sides of the two side walls of the test frame 1.

The vertical lifting mechanism comprises a vertical cylinder 16, and an expansion rod of the vertical cylinder 16 can be supported on the lower surface of the code carrying platform 17 to drive the code carrying platform 17 to move up and down. One side of vertical cylinder 16 is provided with guide pillar 14, and guide pillar 14 is two that the symmetry set up to be located the inboard of two lateral walls of test frame 1, be provided with the uide bushing 22 that passes guide pillar 14 on year sign indicating number platform 17, because the guide effect of guide pillar 14, can guide to carry a sign indicating number platform 17 vertical reciprocating, avoid reciprocating the in-process appearance shake unstable phenomenon. A cylinder support sleeve 15 is fixedly arranged on the guide post 14. The cylinder body of the vertical cylinder 16 is fixed on the cylinder support sleeve 15, and the telescopic rod of the vertical cylinder 16 is supported on the lower surface of the code carrying platform 17. When needs are with last pressure stick 3 and sample 5 separation, the telescopic link of vertical cylinder 16 rises and drives year sign indicating number platform 17 and last pressure stick 3 and rise, when needs are gone up pressure stick 3 and sample 5 contact and are carried out the test, the telescopic link of vertical cylinder 16 descends, carry sign indicating number platform 17 along with the telescopic link and carry a sign indicating number platform 17 effect of self gravity down removal, after the lower extreme of going up pressure stick 3 and sample 5 contact, thereby vertical cylinder 16's telescopic link continues the downstream and breaks away from with carrying a sign indicating number platform 17, sample 5 carries out the test under the pressure of last pressure stick 3.

In addition, the vertical lifting mechanism can also adopt an electric cylinder, a slide rail and other linear motion mechanisms capable of realizing vertical lifting, and the linear motion mechanisms are all the prior art and are not described again.

Because the upper press rod 3 and the lower support rod 7 are worn or can not be centered after the tester is used for a certain number of times, the test result is influenced, and therefore the upper press rod 3 and the lower support rod 7 need to be replaced and debugged after the test is carried out for a certain number of times. When the upper press rod 3 and the lower press rod 7 are replaced and debugged in the prior art, the upper press rod 3 needs to be lifted upwards firstly, the heating furnace 2 is disassembled from the test bed 8 to expose the lower press rod 7, and then the upper press rod 3 and the lower press rod 7 are replaced and the like, so that the heating furnace 2 is heavy, and the disassembly and installation work is complicated, time-consuming and labor-consuming. As shown in fig. 1 and 2, the utility model discloses in be provided with horizontal slide rail 13 at the upper surface of test bench 8, heating furnace 2 slides and sets up on horizontal slide rail 13, and horizontal slide rail 13's quantity is two and parallel arrangement, and horizontal slide rail 13 includes the lead screw and sets up the slider on the lead screw, and heating furnace 2 sets up on the slider, drives the lead screw through the motor and rotates and then drive the slider and slide to can realize the back-and-forth movement of furnace body.

The bottom of lower excellent 7 is provided with the vertical lift module that drives its lift, and vertical lift module includes driving motor 11, vertical slide rail 10 and sets up vertical slider 9 on vertical slide rail 10, vertical slide rail 10 sets up in the below of test bench 8, and lower excellent 7 is fixed to be set up on vertical slider 9. The driving motor 11 drives the vertical slider 9 to slide up and down, so that the lower support rod 7 can be driven to slide up and down. Because test bench 8 has certain height originally promptly, set up vertical slide rail 10 in test bench 8 below can effectively utilize the height of test bench 8 self, can reduce whole test device's vertical height.

When the upper pressing rod 3 and the lower supporting rod 7 need to be debugged, firstly, the lower supporting rod 7 is driven to move downwards by a vertical lifting module below the test bed 8 until the upper end of the lower supporting rod 7 is separated from the heating furnace 2, and the loading platform 17 is lifted by a vertical lifting mechanism above the test bed 8 to drive the upper pressing rod 3 to move upwards, so that the lower end of the upper pressing rod 3 is separated from the heating furnace 2; moving the heating furnace 2 through a horizontal sliding rail 13 to expose the upper pressing rod 3 and the lower pressing rod 7, finally respectively adjusting the positions of the upper pressing rod 3 and the lower pressing rod 7, and carrying out centering debugging on the upper pressing rod 3, the lower pressing rod 7 and the sample 5 or carrying out replacement on the upper pressing rod 3 and the lower pressing rod 7; after debugging is finished, the lower support rod 7 and the upper press rod 3 are moved downwards and upwards respectively, the heating furnace 2 is reset, and test operation is started.

Furthermore, the utility model discloses in, can also be provided with many lower support rods 7 at the interval on the test bench 8 to what correspond sets up the same quantity carries a yard platform 17, every carries and corresponds the formation with lower support rod 7 and be used for placing the space of sample 5 on the last pressure rod 3 of connecting of yard platform 17. To accomplish simultaneous testing of a plurality of test specimens 5 by one tester.

Claims

1. The utility model provides a high temperature expansion apparatus, including test bench (8), set up test frame (1) on test bench (8) and set up heating furnace (2) in test frame (1), be equipped with on test bench (8) and stretch into the furnace chamber in order to support lower stick (7) of sample (5) from heating furnace (2) bottom, heating furnace (2) top is equipped with can stretch into the furnace chamber in order to exert pressure's last pressure stick (3) to sample (5) from heating furnace (2) top, a serial communication port, the upper end of last pressure stick (3) is equipped with carries yard platform (17) to its applied pressure, it is connected with the counter weight assembly who exerts tensile to it to carry yard platform (17), the counter weight assembly includes fixed pulley (21), haulage rope (20) and counter weight hammer (12), fixed pulley (21) are fixed on test frame (1), the one end of haulage rope (20) is connected on carrying yard platform (17), the other end is connected with counter weight hammer (12) after walking around fixed pulley (21).

2. A high temperature expansion tester according to claim 1, characterized in that the loading platform (17) is connected with two counterweight pulley blocks, which are symmetrically arranged along the heating furnace (2), and the fixed pulleys (21) of the counterweight pulley blocks are fixed on the upper part of the test frame (1).

3. A thermal expansion tester as claimed in claim 1, wherein the loading platform (17) is connected to a vertical lifting mechanism for lifting the loading platform.

4. A thermal expansion tester according to claim 3, characterized in that the vertical lifting mechanism comprises a vertical cylinder (16), and the telescopic rod of the vertical cylinder (16) can be supported on the lower surface of the code carrying platform (17) to drive the code carrying platform (17) to move up and down.

5. A high-temperature expansion tester according to claim 4, characterized in that a guide post (14) is arranged on one side of the vertical cylinder (16), a guide sleeve (22) passing through the guide post (14) is arranged on the loading platform (17), and a cylinder support sleeve (15) is fixedly arranged on the guide post (14).

6. A high temperature expansion measuring instrument according to claim 1, wherein the upper surface of the test bed (8) is provided with a horizontal slide rail (13), and the heating furnace (2) is slidably arranged on the horizontal slide rail (13).

7. A thermal expansion tester according to claim 1, characterized in that the bottom of the lower support rod (7) is provided with a vertical lifting module for driving the lower support rod to lift.

8. The high-temperature expansion tester according to claim 7, characterized in that the vertical lifting module comprises a driving motor (11), a vertical slide rail (10) and a vertical slide block (9) arranged on the vertical slide rail (10), the vertical slide rail (10) is arranged below the test bed (8), and the lower support bar (7) is fixedly arranged on the vertical slide block (9).

9. A thermal expansion tester as claimed in claim 1, characterized in that a displacement sensor (19) capable of measuring the displacement of the code-carrying platform (17) is arranged above the code-carrying platform (17).

10. A thermal expansion tester according to claim 1, characterized in that a plurality of lower support rods (7) are arranged at intervals on the test bed (8), and a same number of code-carrying platforms (17) are correspondingly arranged, and the upper press rod (3) connected to each code-carrying platform (17) and the lower support rods (7) correspondingly form a space for placing the test sample (5).