High-temperature wear resistance testing machine capable of simulating hot rolling environment

Abstract

The invention relates to the technical field of wear resistance testing machines, in particular to a high-temperature wear resistance testing machine capable of simulating a hot rolling environment. According to the technical scheme, the device comprises a case, and a clamping system, a friction system, a load system and a heating system which are mounted in the case, and further comprises two isolation hoods which are mounted in the case in a sliding manner and form a hollow case body, and a separation system which is connected with the clamping system and the friction system and is arranged in the two isolation hoods, the separation system is installed in the machine box and connected with the clamping system and the load system, and the separation system drives the clamping system, the friction system and the load system to synchronously ascend, descend and move at a variable speed. The test piece is accelerated to move through the separation system, dust on the test piece is separated from the test piece under the action of inertia, the dust can be conveniently collected without increasing the air velocity, and the situation that the dust is accumulated on the test piece and cannot be effectively collected under the action of friction force is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of wear-resistant testing machines, and particularly to a high-temperature wear-resistant testing machine that can simulate a hot rolling environment. Background Art

[0002] A high-temperature wear-resistant testing machine that can simulate a hot rolling environment is a device used to test the wear resistance of materials at high temperatures. Its purpose is to ensure that the materials can withstand wear without failure during actual hot rolling. The main working principle is to heat the sample to a high temperature through a heating system, use a friction system to conduct wear tests on the sample, and apply a certain load to simulate actual hot rolling conditions. This testing machine mainly includes components such as a heating system, a friction system, a sample clamping system, a load system, a control system, and a data acquisition system. During the friction test, dust may occur, especially when the test material is metal or certain composite materials. These dusts may affect the environment and experimental results, so it is necessary to collect and process the dust. Usually, the testing machine should be equipped with a dust removal system or exhaust equipment installed in the test area to reduce the diffusion of dust.

[0003] During the on-site dust removal, generally, a suction device is used to collect the dust. In the actual working environment, a part of the dust will float in the air, and this part of the dust can be easily collected through the air suction device. However, another part of the dust will cover the surface of the specimen under the action of gravity. This part of the dust is less affected by air flow, and the gas cannot pass through the specimen, that is, the gas cannot rise above the specimen through the bottom of the specimen, and thus cannot effectively drive the dust attached to the specimen to rise. As a result, it is difficult to collect the dust attached to the specimen, and the effect is not good. Summary of the Invention

[0004] The purpose of the present invention is to address the problems in the background art and propose a high-temperature wear-resistant testing machine that can simulate a hot rolling environment.

[0005] The technical solution of the present invention: A high-temperature wear-resistant testing machine that can simulate a hot rolling environment includes a chassis, a clamping system, a friction system, a load system, and a heating system installed in the chassis, and further includes: Two isolation covers slidably installed in the chassis. The two isolation covers form a hollow box body, and the clamping system and the friction system are located inside the two isolation covers; A separation system, which is installed in the chassis and connected to the clamping system and the load system. The separation system drives the clamping system, the friction system, and the load system to move synchronously up and down and change speed.

[0006] Optionally, the separation system includes a first sliding cylinder fixedly installed inside the chassis, a first slider slidably installed inside the first sliding cylinder, the first slider being fixedly connected to the load system, a second sliding cylinder fixedly installed inside the chassis, a second slider slidably installed inside the second sliding cylinder, the second slider being fixedly connected to the clamping system, and a transmission component installed between the first slider and the second slider to synchronously move the first slider and the second slider.

[0007] Optionally, the transmission component includes a first sliding rod fixedly installed on the first slider, a first sleeve rod slidably installed on the first sliding rod, a second sleeve rod fixedly installed on the second slider, a second sliding rod slidably installed inside the second sleeve rod, a transmission rod fixedly installed between the first sleeve rod and the second sliding rod, the first sleeve rod being slidably connected to the chassis, the second sliding rod and the transmission rod being slidably connected to one of the isolation covers, and a driving component installed inside the chassis to drive the first sleeve rod to move variably.

[0008] Optionally, the driving component includes a slider fixedly installed on the first sleeve rod, a driving motor fixedly installed on one of the isolation covers, a connecting rod rotatably installed on the slider, a crank rotatably installed on the connecting rod, and the other end of the crank being coaxially and fixedly connected to the output shaft of the driving motor.

[0009] Optionally, linear motors are fixedly installed on both sides of the chassis, the linear motors corresponding to the isolation covers one by one, and the output shafts of the linear motors being fixedly connected to the isolation covers.

[0010] Optionally, a rotary motor is fixedly installed on the chassis, and the output shaft of the rotary motor is fixedly connected to the second sliding cylinder.

[0011] Optionally, the friction system is fixedly connected to the load system, and the load system controls the pressure between the friction system and the clamping system.

[0012] Optionally, the heating system includes a filter fixedly installed on one of the isolation covers, a gas heater and a blower fixedly installed inside the chassis, a first connecting pipe fixedly installed between the gas heater and the filter, the input end of the blower being communicated with the gas heater through a second connecting pipe, an exhaust pipe fixedly installed at the output end of the blower, and the exhaust pipe being communicated with the other isolation cover.

[0013] Optionally, the heating system further includes a cooling component that cools the interiors of the two isolation covers. The cooling component includes a first valve and a second valve fixedly installed on the first connecting pipe. A hot steam discharge pipe is fixedly installed on the first valve. A third valve and a fourth valve are fixedly installed on the second connecting pipe. A cold air pipe is fixedly installed on the fourth valve, and the cold air pipe is fixedly connected to a refrigeration device.

[0014] Optionally, two support rods are fixedly installed on the transmission rod, and a wind cover is fixedly installed on each support rod. One of the wind covers communicates with the filter, and the other wind cover communicates with the exhaust pipe.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: In the present invention, the specimen is accelerated by the separation system. Under the action of inertia, the dust on the specimen will separate from the specimen. At this time, the dust will be in a floating and gradually diffusing state. At this time, under the action of the air flow, the dust can be quickly collected. It is convenient to collect the dust without increasing the air flow rate, and it is avoided that the dust accumulates on the specimen and cannot be effectively collected due to the action of friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the chassis; Figure 2 is a schematic structural diagram of the interior of the chassis; Figure 3 is a schematic structural diagram of the isolation cover; Figure 4 is a schematic structural diagram of the interior of the isolation cover; Figure 5 is a schematic structural diagram of the separation system Figure 1 ; Figure 6 is a schematic structural diagram of the separation system Figure 2 ; Figure 7 is a schematic diagram of the position of the wind cover; Figure 8 is a schematic structural diagram of the heating system.

[0017] Reference numerals: 1, chassis; 2, clamping system; 201, rotating motor; 3, friction system; 4, load system; 5, heating system; 501, filter; 502, gas heater; 503, first connecting pipe; 504, fan; 505, second connecting pipe; 506, exhaust pipe; 507, first valve; 508, hot steam discharge pipe; 509, second valve; 510, third valve; 511, fourth valve; 512, cold air pipe; 6, isolation cover; 601, linear motor; 7, first sliding cylinder; 701, first slider; 702, second sliding cylinder; 703, second slider; 704, first sliding rod; 705, first sleeve rod; 706, second sleeve rod; 707, second sliding rod; 708, transmission rod; 709, slider; 710, connecting rod; 711, crank; 712, drive motor; 8, support rod; 801, wind cover. Detailed implementation mode

[0018] The technical solutions of the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] Generally, the components of the embodiments of the present application described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application.

[0020] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0021] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0023] like Figures 1 to 4 As shown, the present invention proposes a high-temperature wear-resistant testing machine that can simulate a hot rolling environment, including a chassis 1, a clamping system 2 installed in the chassis 1, a friction system 3, a load system 4 and a heating system 5. The clamping system 2 is used to fix the test piece, and the heating system 5 controls the experimental temperature to simulate the hot rolling environment. The friction system 3 and the load system 4 are fixedly connected, and the load system 4 controls the pressure between the friction system 3 and the clamping system 2. The friction system 3 can be attached to the test piece fixed by the clamping system 2 through the load system 4, and the pressure applied by the friction system 3 to the test piece can be controlled.

[0024] like Figures 2 to 3 As shown, the testing machine of this embodiment also includes two isolation covers 6 slidably installed in the chassis 1, and the two isolation covers 6 form a hollow box body. The clamping system 2 and the friction system 3 are located inside the two isolation covers 6. Through the setting of the isolation covers 6, the experimental environment can be sealed. The heating system 5 will heat the sealed space composed of the two isolation covers 6, and can prevent heat loss and energy consumption during heating. Linear motors 601 are fixedly installed on both sides of the chassis 1. The linear motors 601 correspond to the isolation covers 6 one by one. The output shaft of the linear motor 601 is fixedly connected to the isolation covers 6. The isolation covers 6 can be driven to move by the linear motor 601, so that the two isolation covers 6 are close to or away from each other, which is convenient for the installation and disassembly of the test piece.

[0025] like Figures 3 to 6 As shown, the testing machine of this embodiment also includes a separation system, which is installed in the chassis 1 and connected to the clamping system 2 and the load system 4. The separation system drives the clamping system 2, the friction system 3 and the load system 4 to move synchronously up and down and at different speeds. When the purpose of the test is to study the amount of dust generated and its influence on the friction performance, it is necessary to collect and measure the dust. When collecting, the gas in the internal space of the isolation cover 6 can be driven to circulate through the heating system 5, which is convenient for collecting the dust in the air. For the dust attached to the specimen, it is necessary to separate the dust from the specimen so that this part of the dust can be collected.

[0026] Further, the separation system includes a first sliding cylinder 7 fixedly installed inside the chassis 1, and a first slider 701 slidably installed inside the first sliding cylinder 7. The first slider 701 is fixedly connected to the load system 4. A second sliding cylinder 702 is fixedly installed inside the chassis 1, and a second slider 703 is slidably installed inside the second sliding cylinder 702. The second slider 703 is fixedly connected to the clamping system 2. A transmission component for synchronously moving the first slider 701 and the second slider 703 is installed between the first slider 701 and the second slider 703. By means of the transmission component, the first slider 701 and the second slider 703 are synchronously moved, and further, the load system 4 and the clamping system 2 can be driven to move synchronously. Thus, when the pressure between the test piece and the friction system 3 remains unchanged, the test piece can be driven to move. When the test piece moves at an accelerated speed, due to inertia, the dust on the test piece will separate from the test piece. At this time, the dust will be in a state of floating and gradually diffusing. At this time, under the action of the air flow, the dust can be quickly collected, and it is convenient to collect the dust without increasing the air flow rate, avoiding the dust from accumulating on the test piece and making it impossible to effectively collect the dust due to the action of friction.

[0027] Among them, the transmission component includes a first sliding rod 704 fixedly installed on the first slider 701. A first sleeve rod 705 is slidably installed on the first sliding rod 704. A second sleeve rod 706 is fixedly installed on the second slider 703. A second sliding rod 707 is slidably installed inside the second sleeve rod 706. A transmission rod 708 is fixedly installed between the first sleeve rod 705 and the second sliding rod 707. The first sleeve rod 705 is slidably connected to the chassis 1. The second sliding rod 707 and the transmission rod 708 are slidably connected to one of the isolation covers 6. Under the action of the transmission rod 708, the first sleeve rod 705 and the second sliding rod 707 can be synchronously moved. And when the isolation cover 6 moves, the first sleeve rod 705 can slide on the first sliding rod 704, and at the same time, the second sliding rod 707 can slide on the second sleeve rod 706, so that the movement of the isolation cover 6 does not affect the clamping system 2 and the load system 4. A driving component for driving the first sleeve rod 705 to move at a variable speed is installed inside the chassis 1. By means of the driving component, the test piece on the clamping system 2 can be accelerated, and the test piece can be separated from the dust.

[0028] Furthermore, the driving assembly includes a slider 709 fixedly mounted on the first sleeve rod 705, a driving motor 712 fixedly mounted on one of the isolation covers 6. A connecting rod 710 is rotatably mounted on the slider 709, and a crank 711 is rotatably mounted on the connecting rod 710. The other end of the crank 711 is coaxially and fixedly connected to the output shaft of the driving motor 712. By driving the driving motor 712, the crank 711 can be driven to rotate. The rotating crank 711 will drive the slider 709 to slide in the up and down directions under the transmission of the connecting rod 710, and then drive the first sleeve rod 705 to move in the up and down directions, so as to drive the specimen to move in the up and down directions; It should be noted that: the crank 711, the connecting rod 710 and the slider 709 form a crank-slider mechanism. The crank-slider mechanism has a quick-return characteristic, which refers to the phenomenon that the speed of the slider 709 during the return stroke (return) is faster than that during the working stroke (forward).

[0029] This characteristic is caused by the uneven distribution of the rotation angle of the crank 711. Usually, the rotation angle of the crank 711 during the return stroke is smaller, resulting in an increase in the moving speed of the slider 709; Furthermore, under the action of the quick-return characteristic, the moving speed of the slider 709 is not constant. The slider 709 and the specimen move quickly during the descending process to enhance the separation effect between the specimen and the dust, and the specimen smokes during the ascending time, which can increase the separation time between the specimen and the dust, so that the dust can be completely collected.

[0030] It should be noted that a rotating motor 201 is fixedly mounted on the chassis 1, and the output shaft of the rotating motor 201 is fixedly connected to the second sliding cylinder 702. By driving the rotating motor 201, the second sliding cylinder 702 can be driven to rotate, and then the clamping system 2 and the specimen can be driven to rotate, so that relative movement can be carried out between the specimen and the friction system 3, and then a friction experiment can be carried out.

[0031] As Figures 7 to 8 shown, in this embodiment, the heating system 5 includes a filter 501 fixedly mounted on one of the isolation covers 6, a gas heater 502 and a blower 504 fixedly mounted in the chassis 1. A first connecting pipe 503 is fixedly mounted between the gas heater 502 and the filter 501. The input end of the blower 504 is communicated with the gas heater 502 through a second connecting pipe 505. The output end of the blower 504 is fixedly mounted with an exhaust pipe 506, and the exhaust pipe 506 is communicated with the other isolation cover 6. Under the action of the blower 504, the gas inside the isolation cover 6 can enter the gas heater 502 after being dust-removed by the filter 501, and then enter the isolation cover 6 again through the blower 504 and the exhaust pipe 506, so as to make the gas inside the isolation cover 6 circulate internally and collect the dust. The first connecting pipe 503 is a flexible pipe and can move within a certain range along with the isolation cover 6.

[0032] Furthermore, the heating system 5 further includes a cooling component. After the experiment is completed, the specimen needs to be quickly cooled so that the specimen can be quickly taken out. The two isolation covers 6 can be cooled by the cooling component. The cooling component includes a first valve 507 and a second valve 509 fixedly installed on the first connecting pipe 503. A hot steam discharge pipe 508 is fixedly installed on the first valve 507. A third valve 510 and a fourth valve 511 are fixedly installed on the second connecting pipe 505. A cold air pipe 512 is fixedly installed on the fourth valve 511. The cold air pipe 512 is fixedly connected to the refrigeration device. When heating, the first valve 507 and the fourth valve 511 are in the closed state, and the second valve 509 and the third valve 510 are in the open state. When cooling, the first valve 507 and the fourth valve 511 are in the open state, and the second valve 509 and the third valve 510 are in the closed state. At this time, under the action of the fan 504, the cold air passing through the cooling device will pass through the cold air pipe 512, the fan 504, and the exhaust pipe 506 and enter the interior of the isolation cover 6. Subsequently, the cold air exchanges heat with the hot steam inside the isolation cover 6, and the gas after the heat exchange will be discharged through the first connecting pipe 503 and the hot steam discharge pipe 508, so that the specimen can be quickly cooled down.

[0033] Wherein, two support rods 8 are fixedly installed on the transmission rod 708. A wind hood 801 is fixedly installed on the support rod 8. One of the wind hoods 801 is communicated with the filter 501, and the other wind hood 801 is communicated with the exhaust pipe 506. The two wind hoods 801 are located on both sides of the friction system 3, that is, on both sides of the position where the specimen is rubbed. One of the wind hoods 801 will blow air on the dust generated at the rubbing position, and the other wind hood 801 will generate suction on the dust, so that the dust can be collected.

[0034] In this embodiment, the friction system 3 can be attached to the specimen fixed by the clamping system 2 through the load system 4, and the magnitude of the pressure applied by the friction system 3 to the specimen can be controlled. By rotating the rotating motor 201, the second sliding cylinder 702 can be driven to rotate, and then the clamping system 2 and the specimen can be driven to rotate, so that relative movement can occur between the specimen and the friction system 3, and thus a friction experiment can be carried out.

[0035] The driving motor 712 can drive the crank 711 to rotate. The rotating crank 711 will drive the slider 709 to slide in the up and down directions under the transmission of the connecting rod 710, and then drive the first sleeve rod 705 to move in the up and down directions, thereby driving the specimen to move in the up and down directions. Under the action of inertia, the dust on the specimen will separate from the specimen. At this time, the dust will be in a state of floating and gradually spreading. At this time, under the action of the air flow, the dust can be quickly collected. Increasing the air flow velocity can facilitate the collection of dust and avoid the accumulation of dust on the specimen, which may cause ineffective collection due to the action of friction.

[0036] The above specific embodiments are only several alternative embodiments of the present invention. Based on the technical solution of the present invention and the relevant revelations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A high temperature wear test machine capable of simulating a hot rolling environment, comprising a chassis (1), a clamping system (2) installed in the chassis (1), a friction system (3), a load system (4) and a heating system (5), characterized in that: Also includes: Two isolation covers (6) are slidably mounted in the chassis (1), the two isolation covers (6) forming a hollow box body, and the clamping system (2) and the friction system (3) are located inside the two isolation covers (6); A separation system is installed in a chassis (1) and connected to a clamping system (2) and a load system (4), and the separation system drives the clamping system (2), the friction system (3) and the load system (4) to move synchronously at different speeds.

2. A high temperature wear resistance testing machine capable of simulating hot rolling environment according to claim 1, characterized in that: The separation system comprises a first slide cylinder (7) fixedly mounted inside a chassis (1), and a first slider (701) slidably mounted inside the first slide cylinder (7); the first slider (701) is fixedly connected to the load system (4); a second slide cylinder (702) is fixedly mounted inside the chassis (1); a second slider (703) is slidably mounted inside the second slide cylinder (702); the second slider (703) is fixedly connected to the clamping system (2); and a transmission assembly is installed between the first slider (701) and the second slider (703) for enabling the first slider (701) and the second slider (703) to move synchronously.

3. A high temperature wear resistance testing machine capable of simulating hot rolling environment according to claim 2, characterized in that: The transmission assembly comprises a first sliding bar (704) fixedly mounted on a first sliding block (701); a first set of rods (705) is slidably mounted on the first sliding bar (704); a second set of rods (706) is fixedly mounted on the second sliding block (703); a second sliding bar (707) is slidably mounted in the second set of rods (706); a transmission rod (708) is fixedly mounted between the first set of rods (705) and the second sliding bar (707); the first set of rods (705) is slidably connected to the chassis (1); the second sliding bar (707) and the transmission rod (708) are slidably connected to one of the isolation covers (6); and a driving assembly for driving the first set of rods (705) to move at a variable speed is mounted in the chassis (1).

4. A high temperature wear resistance testing machine capable of simulating hot rolling environment according to claim 3, characterized in that: The driving assembly comprises a slider (709) fixedly mounted on the first set of rods (705), and a driving motor (712) fixedly mounted on one of the isolation covers (6); a connecting rod (710) is rotatably mounted on the slider (709); a crank (711) is rotatably mounted on the connecting rod (710); and the other end of the crank (711) is coaxially fixedly connected to an output shaft of the driving motor (712).

5. A high temperature wear resistance testing machine capable of simulating hot rolling environment according to claim 4, characterized in that: Linear motors (601) are fixedly mounted on both sides of the chassis (1); the linear motors (601) correspond to the isolation covers (6) in a one-to-one manner; and the output shafts of the linear motors (601) are fixedly connected to the isolation covers (6).

6. A high temperature wear resistance testing machine capable of simulating hot rolling environment according to claim 5, characterized in that: A rotating motor (201) is fixedly mounted on the chassis (1), and an output shaft on the rotating motor (201) is fixedly connected to the second slide cylinder (702).

7. A high temperature wear resistance testing machine capable of simulating hot rolling environment according to claim 6, characterized in that: The friction system (3) and the load system (4) are fixedly connected, and the load system (4) controls the pressure between the friction system (3) and the clamping system (2).

8. A high temperature wear resistance testing machine capable of simulating hot rolling environment according to claim 7, characterized in that: The heating system (5) comprises a filter (501) fixedly mounted on one of the isolation covers (6), a gas heater (502) fixedly mounted in the chassis (1), and a fan (504); a first connecting pipe (503) is fixedly mounted between the gas heater (502) and the filter (501); an input end of the fan (504) is connected to the gas heater (502) via a second connecting pipe (505); an exhaust pipe (506) is fixedly mounted on an output end of the fan (504); and the exhaust pipe (506) is connected to the other isolation cover (6).

9. A high temperature wear resistance testing machine capable of simulating hot rolling environment according to claim 8, characterized in that: The heating system (5) further comprises a cooling component, which cools down the interior of the two isolation covers (6), and comprises a first valve (507) and a second valve (509) fixedly mounted on the first connecting pipe (503), a hot steam exhaust pipe (508) fixedly mounted on the first valve (507), a third valve (510) and a fourth valve (511) fixedly mounted on the second connecting pipe (505), a cold air pipe (512) fixedly mounted on the fourth valve (511), and the cold air pipe (512) fixedly connected to the refrigeration device.

10. A high temperature wear resistance testing machine capable of simulating hot rolling environment according to claim 9, characterized in that: Two support rods (8) are fixedly mounted on the transmission rod (708), and wind shields (801) are fixedly mounted on the support rods (8), wherein one of the wind shields (801) is connected to the filter (501), and the other wind shield (801) is connected to the exhaust pipe (506).

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