CN211206119U

CN211206119U - Thermal shock resistance test system

Info

Publication number: CN211206119U
Application number: CN201921395474.5U
Authority: CN
Inventors: 曾小锋; 朱福林; 张家郡; 陈巨喜
Original assignee: Hengyang Kaixin Special Materials Technology Co ltd
Current assignee: Hengyang Kaixin Special Materials Technology Co ltd
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2020-08-07
Anticipated expiration: 2029-08-26

Abstract

The utility model relates to a thermal shock resistance capability test system, thermal shock resistance capability test system include heating member, cooling part and execute the casting die. The thermal shock resistance test system is provided with a heating station, a quenching station and a pressing station. The heating member is installed in the heating station for the piece is detected in the heating. The cooling piece is arranged at the quenching station and is used for quenching the piece to be detected. The pressing piece is arranged on the pressing station and used for pressing and maintaining pressure on the piece to be detected. The utility model provides a thermal shock resistance capability test system has the intuition and the instantaneity of preferred.

Description

Thermal shock resistance test system

Technical Field

The utility model relates to a ceramic preparation technical field especially relates to a thermal shock resistance test system.

Background

In the process of using the ceramic, if the environmental temperature changes sharply, the ceramic with poor thermal shock resistance will generate cracks, even peeling damage. Therefore, after the ceramic is manufactured, the thermal shock resistance of the ceramic needs to be tested so as to better control the production quality of the ceramic according to the quality of the thermal shock resistance. However, the conventional thermal shock resistance test has poor intuitiveness and instantaneity, and cannot effectively reflect the quality of the thermal shock resistance of the ceramic, so that the test accuracy is low.

SUMMERY OF THE UTILITY MODEL

Accordingly, it is necessary to provide a thermal shock resistance testing system with better intuitiveness and instantaneity for solving the problem of poor intuitiveness and instantaneity of the conventional thermal shock resistance testing.

A thermal shock resistance test system having a heating station, a quenching station, and a pressing station, the thermal shock resistance test system comprising:

the heating element is arranged at the heating station and is used for heating the to-be-detected element;

the cooling piece is arranged at the quenching station and is used for quenching the piece to be detected;

and the pressing piece is arranged on the pressing station and is used for pressing and maintaining the pressure of the piece to be detected.

In one embodiment, the heating element is a heating furnace, the heating furnace includes a housing and a heating body, the housing has a heating cavity, and the heating body is accommodated and fixed in the heating furnace.

In one embodiment, the heating furnace further comprises an insulating main body, the insulating main body is accommodated and fixed in the heating cavity, and an insulating part for accommodating the piece to be detected is formed in the insulating main body.

In one embodiment, the heating furnace is cube-shaped, the heating body includes two heating strips, two heating strips are disposed on two opposite inner side walls of the heating cavity, the insulating body includes an insulating bottom plate and two insulating rods, the insulating bottom plate covers the bottom wall of the heating cavity, and the two insulating rods are disposed on the insulating bottom plate at intervals and clamped between the two heating strips to form the insulating portion with the insulating bottom plate.

In one embodiment, the cooling part is a cold water tank, the cold water tank includes a first cold water tank and a second cold water tank, and the first cold water tank and the second cold water tank are used for quenching the to-be-detected part in sequence.

In one embodiment, the pressing member is a pressure tester, and the pressure tester includes:

the body is provided with a pressure test detection position;

the driving part is arranged on the machine body and comprises a pneumatic cylinder and a hydraulic cylinder which is coaxial with the pneumatic cylinder, the pneumatic cylinder comprises a pneumatic cylinder body and a pneumatic piston rod which penetrates through the pneumatic cylinder body, the hydraulic cylinder comprises a hydraulic piston rod, and the hydraulic piston rod can stretch to abut against one end of the pneumatic piston rod;

the extrusion part is arranged at one end of the air pressure piston rod, which is far away from the hydraulic piston rod, and is aligned with the pressure test detection position, and the extrusion part is used for providing pressure for the piece to be detected;

a pressure sensor for detecting a pressure value provided by the extrusion.

In one embodiment, the hydraulic cylinder further comprises a controller, and the controller is electrically connected with the pressure sensor and the hydraulic cylinder.

In one embodiment, the pneumatic control system further comprises a hydraulic control valve and a pneumatic control valve electrically connected with the controller, wherein the pneumatic control valve is communicated with the interior of the pneumatic cylinder through the hydraulic control valve, lubricating oil is contained in the hydraulic control valve, and gas passing through the pneumatic control valve penetrates through the lubricating oil and then enters the interior of the pneumatic cylinder.

In one embodiment, one side of the extrusion piece, which faces the pressure test detection position, is sunken to form an abutting through groove.

In one embodiment, the pressure testing device further comprises an elastic pad, and the elastic pad is arranged on one side surface of the extrusion piece facing the pressure testing detection position.

According to the thermal shock resistance test system, the to-be-detected piece is heated through the heating piece, and the to-be-detected piece is quenched through the cooling piece, so that the to-be-detected temperature is changed rapidly. Furthermore, the pressing piece presses the to-be-detected piece and maintains the pressure in a preset range, so that the to-be-detected piece is positioned in a certain pressure environment, and the generation and the fracture of surface cracks of the to-be-detected piece can be accelerated. If the to-be-detected piece is broken within the preset time period, the test is finished, which shows that the to-be-detected piece is very easy to break in an environment with rapid temperature change and the thermal shock resistance of the to-be-detected piece is poor. If the to-be-detected piece is not broken within the preset time period, the situation that the temperature of the to-be-detected piece is changed rapidly is indicated, and the breakage resistance is high. Therefore, the heating element, the cooling element and the pressing element are reused to repeatedly heat, quench and press the to-be-detected element until the to-be-detected element is broken. The higher the repeated use times of the heating element, the cooling element and the pressing element are, the stronger the breakage resistance of the element to be detected is, and the better the thermal shock resistance is. Moreover, by observing the fracture of the piece to be detected and recording the repeated use times of the heating element, the cooling element and the pressing element, the quality of the thermal shock resistance of the piece to be detected can be visually and immediately known, and the method has better intuitiveness and instantaneity.

Drawings

Fig. 1 is a schematic structural diagram of a heating element of a thermal shock resistance testing system according to an embodiment of the present invention;

fig. 2 is a schematic view of the overall structure of a pressing member of the thermal shock resistance testing system according to an embodiment of the present invention;

FIG. 3 is a side view of a press element of the thermal shock resistance testing system shown in FIG. 2.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The utility model provides a thermal shock resistance test system (not marked). The thermal shock resistance test system is provided with a heating station, a quenching station and a pressing station. Specifically, the thermal shock resistance test system may have a flow line, and the heating station, the quenching station, and the pressing station are sequentially arranged along an extension direction of the flow line. Or the thermal shock resistance testing system can also be provided with a mounting surface, and the heating station, the quenching station and the pressing station are arranged at different positions of the mounting surface.

Referring to fig. 1 and 2, the thermal shock resistance testing system includes a heating element 200, a cooling element (not shown), and a pressing element 100.

The heating member 200 is installed at the heating station, and is used to heat the member to be detected. Specifically, when the to-be-detected piece needs to be heated, the to-be-detected piece is placed in the heating station, and the heating element 200 is started.

In one embodiment, the heating member 200 is a furnace. The heating furnace includes a housing 210 and a heating body 220, the housing 210 has the housing 210, and the heating body 220 is housed and fixed in the heating furnace.

Specifically, the housing 210 is further provided with a door body, and the door body is used for opening or closing the heating cavity 211. The heating body 220 is received and fixed in the heating cavity 211. Generally, the heating body 220 is used for heating, and the heating body 220 may be a heating rod, a heating band, a heating sheet, or the like. Before the test, the heating cavity 211 is opened, the piece to be detected is placed in the heating cavity 211, and then the heating cavity 211 is closed. The heating main body 220 is operated, and the temperature in the heating chamber 211 rises. Through setting up heating member 200 for the heating furnace for only there is the outside of few partial heat diffusion to casing 210 at the in-process of treating the detection piece heating, thereby can promote thermal utilization ratio, is convenient for realize waiting to detect the rapid heating of piece.

Specifically, a temperature sensor and a control main board are also disposed in the heating cavity 211. When the temperature sensor senses that the temperature in the heating cavity 211 reaches a preset temperature value, the control main board controls the heating main body 220 to stop working, so that the temperature in the heating cavity 211 is maintained at the preset temperature value, and the piece to be detected is kept warm within a preset time, so that the temperature of each part of the piece to be detected is kept consistent. When the temperature detected by the temperature sensor is lower than the preset temperature value, the control main board controls the heating main body 220 to work, so as to raise the temperature in the heating cavity 211. When the preset time is over, the control main board can also control the heating element 200 to stop working. The tester opens the door body and takes out the piece to be detected from the heating cavity 211.

Specifically, the preset temperature value may be a specific temperature value or a certain temperature range.

Further, the heating furnace further includes an insulating body 230. The insulating main body 230 is received and fixed in the heating cavity 211, and the insulating main body 230 is formed with an insulating portion for receiving the piece to be detected.

Specifically, when the insulating main body 230 is received in the heating cavity 211, the insulating main body 230 may contact the heating main body 220, and the heating main body 220 directly transfers heat to the insulating main body 230. Alternatively, the heating body 220 may be spaced apart from the insulating body 230 and transfer heat to the insulating body 230 through air. The insulating body 230 is used for insulating the member to be detected and the heating body 220. Moreover, the insulating body 230 has better high temperature resistance to prevent melting due to over-high temperature during heating the object to be detected.

Specifically, because the temperature of waiting to detect the piece is higher in the in-process of waiting to detect a heating, for the convenience changes or detects a plurality of waiting to detect the piece and take out after the end of heating, be provided with the wire on waiting to detect the piece. The piece to be detected is generally arranged in the shape of an elongate cylinder. The metal wire is wound on the piece to be detected, and a metal ring with an inner diameter slightly larger than the outer diameter of the piece to be detected can be formed. When the piece to be detected needs to be taken out from the heating cavity 211 or needs to be replaced with a new piece to be detected in the heating cavity 211, the hook piece with the high-temperature-resistant function can be hooked on the metal ring to conveniently place or take out the piece to be detected, so that a tester is prevented from directly taking out the piece to be detected from the insulating part with hands or placing the piece to be detected.

Generally, the heating body 220 needs to be electrified in the heating process, the insulating part 233 is formed on the insulating body 230 by arranging the insulating body 230, and the to-be-detected object is prevented in the insulating part 233, so that the heating body 220 is insulated from the to-be-detected object, and the short circuit of the heating body 220 caused by the contact of the metal wire and the heating body 220 is avoided, thereby having better safety.

Specifically, the heating body 220 may be a heating rod, a heating sheet, or the like, and the insulating body 230 is made of an insulating material, and the surface thereof is recessed to form the insulating part 233. In this embodiment, the heating furnace is a cube. The heating body 220 includes two heating strips 221, and the two heating strips 221 are disposed on two opposite inner sidewalls of the heating cavity 211. The insulating main body 230 includes an insulating bottom plate 232 and two insulating rods 231, the insulating bottom plate 232 covers the bottom wall of the heating cavity 211, and the two insulating rods 231 are disposed on the insulating bottom plate 232 at intervals and clamped between the two heating strips 221 to form an insulating portion 233.

Specifically, the heating furnace has a cubic shape, and the heating chamber 211 has a cubic space. The heating cavity 211 includes opposing top and bottom walls, opposing left and right interior sidewalls, and a rear interior sidewall. The inner wall opposite to the rear side wall is formed by a door body.

The two heating strips 221 are disposed on the opposite left and right inner sidewalls. The insulating bottom plate 232 covers the bottom wall, and the two insulating rods 231 are disposed on the bottom wall at intervals and located between the two heating strips 221. Further, the two insulating rods 231 are spaced apart from any one of the heating strips 221. The insulating bottom plate 232 and the two insulating strips are surrounded to form an insulating part 233. When the piece to be detected is installed, the door body is opened, and the piece to be detected can be placed in the insulating part 233, so that the metal wire on the piece to be detected is insulated from the heating strip 221.

Two heating strips 221 work simultaneously, can effectively promote the rate of temperature rise in the heating chamber 211, are convenient for detect a rapid heating up to promote heating efficiency. The two insulating rods 231 and the insulating bottom plate 232 are arranged together to form the insulating part 233, and the piece to be detected is placed in the insulating part 233, so that the piece to be detected and the heating strip 221 are completely isolated, and therefore, the insulating effect and the safety are better. In addition, the insulating part 233 formed by splicing and surrounding the insulating rod 231 and the insulating bottom plate 232 is simple in forming mode, and the installation efficiency of the insulating main body 230 is improved conveniently.

It should be noted that, in other embodiments, the heating strips 221 may be replaced by heating plates, the heating plates may be completely covered on two inner side walls opposite to the heating cavity 211, and the insulating rods 231 may be replaced by insulating plates. In addition, in other embodiments, the arrangement positions of the heating strips 221, the insulating rods 231 and the insulating base plate 232 may also be changed.

The cooling piece is arranged at the quenching station and is used for quenching the piece to be detected.

The cooling piece is used for quenching the heated piece to be detected so as to enable the temperature to be detected to change rapidly and meet the condition requirement of the thermal shock resistance test.

In particular, the cooling element may be a fan, a cold water basin or other cooling means. In this embodiment, the cooling member is a cold water reservoir. The cold water tank is filled with cold water at room temperature. And when the piece to be detected is taken out of the heating furnace, the piece to be detected is placed in the cold water pool to be cooled. Through setting up the cold water pond, on the one hand for wait to detect the quench step operation of piece comparatively simple, work efficiency is high. On the other hand, the specific heat capacity of water is large, and cold water is coated on the piece to be detected, so that heat on the piece to be detected can be rapidly absorbed, and quenching is achieved. Moreover, after the piece to be detected is taken out, the heat in the cold water pool can be diffused into the air to be naturally cooled, so that the cold water pool can be recycled, and the energy can be effectively saved.

In this embodiment, the cold water tank includes a first cold water tank and a second cold water tank. The first cold water tank and the second cold water tank are used for quenching the piece to be detected in sequence.

Because the temperature is generally higher when waiting to detect to take out from the heating furnace, when will wait to detect to place and cool in first cold water pond, the cold water temperature in first cold water pond will surge rapidly for the temperature difference scope before waiting to detect a quench is a little. Therefore, the piece to be detected cannot meet the condition of rapid temperature change, and the test accuracy of the thermal shock resistance is low. At this time, the piece to be detected can be taken out of the first cold water pool and then placed in the second cold water pool for cooling. After the workpiece to be detected is cooled by the first cold water tank and the second cold water tank, the temperature of the workpiece to be detected changes rapidly so as to facilitate a tester to operate the workpiece to be detected to perform subsequent steps. And after the second cold water tank is used, the temperature of the piece to be detected is low, and the tester can conveniently operate the piece to be detected to perform subsequent steps.

The pressing member 100 is installed at the pressing station, and is used to press and hold pressure on the member to be detected.

The pressing member 100 is used for pressing the to-be-detected member to provide a pressure environment for the test of the to-be-detected member, so that the generation and the fracture of cracks on the surface of the to-be-detected member are accelerated, and then a tester can conveniently and visually observe the test effect. When a to-be-detected piece is pressed, the pressure is gradually increased to a preset pressure value, and the preset pressure value is maintained in a preset time period, so that a tester can conveniently observe the damage degree of the to-be-detected piece under the stable pressure condition, thermal shock resistance parameters of the to-be-detected piece under the preset pressure value are obtained, and meanwhile, the influence of pressure change on a test result can be eliminated. When a plurality of pieces to be detected need to be detected and pressure is maintained, the pressure of the pressure maintaining is equal, so that the influence of pressure change on the result of the thermal shock resistance test of the plurality of pieces to be detected is eliminated, and the comparison of the thermal shock resistance of the plurality of pieces to be detected is facilitated.

Specifically, the press member 100 is a pressure tester. The limit range of the pressure on the pressure testing machine can be set according to requirements. The pressure provided by the pressure testing machine is wider in range, so that the applicability of the thermal shock resistance testing system is stronger. Moreover, the process of applying pressure of the pressure testing machine can be automated, so that the processes of applying pressure and maintaining pressure of the piece to be detected are more intelligent.

By arranging the thermal shock resistance test system, the to-be-detected piece is heated by the heating piece 200, and the to-be-detected piece is quenched by the cooling piece, so that the temperature to be detected is changed rapidly. Furthermore, the pressing member 100 presses the to-be-detected piece so that the to-be-detected piece is in a certain pressure environment, which can accelerate the generation and the fracture of the surface crack of the to-be-detected piece, so as to improve the testing efficiency of the thermal shock resistance. During pressure maintaining, the pressure is maintained at the preset pressure value, the pressure fluctuation is small, the influence of the pressure fluctuation on an experiment test result can be reduced, and the test result is more accurate.

If the to-be-detected piece is broken within the preset time period, the test is finished, which shows that the to-be-detected piece is very easy to break in an environment with rapid temperature change and the thermal shock resistance of the to-be-detected piece is poor. If the to-be-detected piece is not broken within the preset time period, the situation that the temperature of the to-be-detected piece is changed rapidly is indicated, and the breakage resistance is high. Therefore, the heating member 200, the cooling member and the pressing member 100 are reused to repeatedly heat, quench and press the member to be detected, and maintain the pressure until the member to be detected is broken. The higher the number of repeated use of the heating member 200, the cooling member, and the pressing member 100 is, the higher the breakage resistance of the member to be detected is, the higher the corresponding grade quality is, and the better the thermal shock resistance is. Moreover, by observing the fracture of the to-be-detected piece and recording the repeated use times of the heating element 200, the cooling element and the pressing element 100, the quality of the thermal shock resistance of the to-be-detected piece can be visually and immediately known, and the method has better intuitiveness and instantaneity. Moreover, by the system, the thermal shock resistance of a plurality of pieces to be detected can be tested and compared according to repeated times, so that the pieces to be detected with better thermal shock resistance can be obtained, and the production quality of the ceramic can be better controlled according to the production process of the pieces to be detected.

Referring to fig. 3, in the present embodiment, the pressure tester includes a machine body 110, a driving member 120, an extrusion member 130, and a pressure sensor (not shown).

The body 110 plays a supporting and mounting role. The body 110 is provided with a pressure test detection position. Specifically, the body 110 includes a frame 115, two mounting frames 114, a base 111, and two clamping blocks 112. The frame 115 is elongated. When the pressure tester is placed on a horizontal surface, the frame 115 extends in a vertical direction. The two mounting brackets 114 are respectively disposed on two opposite sides of the frame 115. The bases 111 are spaced apart from one side of the frame 115 adjacent to the mounting frame 114 and are connected by a connecting frame 113. The base 111 has a test surface 1111. The test surface 1111 is disposed parallel to the horizontal plane.

Specifically, the base 111 has a rectangular parallelepiped shape and extends in the horizontal direction. The testing surface 1111 of the base 111 is formed with a strip-shaped fixing groove 1112, and the fixing groove 1112 is located in the middle of the base 111 and extends to the edges of the two ends of the base 111 along the length direction of the base 111. The test surface 1111 of the base 111 is further provided with a spacing hole 1113, the diameter of the spacing hole 1113 is larger than the width of the fixing groove 1112, the spacing hole 1113 is communicated with the fixing groove 1112, and the depth of the spacing hole 1113 is larger than the depth of the fixing groove 1112.

The two clamping blocks 112 are disposed at intervals on the testing surface 1111, and define a pressure testing detection position together with the testing surface 1111.

Specifically, both clamping blocks 112 extend along the length of the frame 115. When the pressure is applied, the object to be detected is placed at the pressure test detection position and clamped between the two clamping blocks 112. By arranging the base 111 and the two clamping blocks 112, the two clamping blocks 112 are arranged on the testing surface 1111 at intervals, and define a pressure testing detection position together with the testing surface 1111. Before pressing, the piece to be detected can be directly clamped between the two clamping blocks 112 to realize the fixation of the piece to be detected, so that the piece to be detected is simple to mount, and the pressing efficiency is convenient to improve.

Further, in an embodiment, the two clamping blocks 112 each include a clamping block body 1121 and a mounting block 1122 connected to the clamping block body 1121. The clamping block body 1121 is supported on the testing surface 1111, and the mounting block 1122 is clamped with the fixing groove 1112.

Specifically, the mounting block 1122 is fixedly connected to the clamping block body 1121. The clamping block body 1121 is supported on the testing surface 1111, and the two mounting blocks 1122 are disposed on the surface of the clamping block body 1121 facing the testing surface 1111 and clamped in the fixing groove 1112 to fix the two clamping block bodies 1121. The two clamp block bodies 1121 and the testing surface 1111 together define a pressure testing detection site. The groove wall of the fixing groove 1112 has clamping and limiting effects on the mounting block 1122, so that the mounting block 1122 and the clamping block body 1121 can be prevented from shaking under the action of external force, and the connection between the clamping block body 1121 and the base 111 is more stable and reliable. Therefore, when the piece to be detected is mounted at the pressure test detection position, the piece to be detected can be stably fixed between the two clamp block bodies 1121, so that the reliability of the test of the pressure test machine is higher.

In addition, the clamping manner also makes the mounting manner of the clamping block body 1121 and the base 111 simpler, which is convenient for improving the mounting efficiency of the clamping block body 1121.

In addition, since the fixing groove 1112 is in a long strip shape, and two ends of the fixing groove 1112 extend to two end edges of the base 111, when the clamp block body 1121 is installed, the two installation blocks 1122 can be respectively installed from two end openings of the fixing groove 1112, and slide along the fixing groove 1112 under the action of external thrust, and approach each other to clamp the to-be-detected object. When the length of the piece to be detected changes, the two clamping blocks 112 can be operated to slide along the directions away from each other, so that the distance between the two clamping blocks 112 is adaptive to the length of the piece to be detected.

Further, the depth of the fixing groove 1112 is greater than the size of the mounting block 1122 in the vertical direction. When the mounting block 1122 is clamped in the fixing groove 1112, the mounting block 1122 is spaced from the bottom of the fixing groove 1112. Therefore, the contact area between the mounting block 1122 and the groove wall of the fixing groove 1112 can be reduced, and the friction force between the mounting block 1122 and the groove wall of the fixing groove 1112 can be reduced, so that the effort is saved in the process of pushing the two clamping block bodies 1121 to approach or move away from each other.

In one embodiment, the pressure testing machine further comprises a fastener, the main body of the clamp blocks 112 is an L-shaped block structure, and the clamp blocks 112 comprise a first plate 11211 parallel to the testing surface 1111 and a second plate 11212 perpendicular to the testing surface 1111, the first plates 11211 on the two clamp blocks 112 are arranged oppositely and at intervals, the second plates 11212 on the two clamp blocks 112 extend along directions away from each other, each second plate 11212 is provided with a mounting hole 194, and the fastener penetrates through the mounting hole 194 and the fixing groove 1112.

Specifically, the mounting block 1122 on each clamping block 112 is disposed on the first plate 11211, and the first plate 11211 on each clamping block 112 is disposed in a staggered manner with respect to the mounting hole 194. The fastening member is inserted into the mounting hole 194 and the fixing groove 1112, and can further fix the clamp block bodies 1121 to prevent the two clamp block bodies 1121 and the base 111 from being loosened and sliding or swaying, so that the to-be-detected member can be stably mounted between the two clamp block bodies 1121, and the pressure testing machine has better testing reliability.

The clamp block 112 can be stably mounted on the base 111 by combining the fastening member and the limit function of the fixing groove 1112. Therefore, in the process of pressure testing of the piece to be tested, relative sliding does not occur between the two clamping blocks 112, and the piece to be tested can be stably borne on the base 111, so that the reliability of the pressure testing machine is improved.

Further, the surfaces of the two clamping blocks 112 facing each other are recessed to form mounting grooves 1123.

Specifically, the surfaces of the two first plates 11211 facing each other form a mounting groove 1123, and one side of the mounting groove 1123 extends to the side of the first plate 11211 facing away from the test surface 1111, i.e., the side of the mounting groove 1123 extends to the top surface of the first plate 11211. When the piece to be detected is installed, the two opposite ends of the piece to be detected are respectively placed into the mounting grooves 1123 from the top surfaces of the two first plate pieces 11211 and clamped with the mounting grooves 1123. The groove wall of the mounting groove 1123 has a limiting effect on the piece to be detected, and can prevent the piece to be detected from sliding relative to the two clamping blocks 112, so that the piece to be detected can be conveniently pressed.

Further, in one embodiment, the wall of the mounting groove 1123 is a circular arc surface, and the inner diameter thereof gradually decreases in the direction from the top surface of the first plate 11211 to the testing surface 1111.

Generally, the piece to be detected is a cylindrical structure, the groove wall of the mounting groove 1123 of the arc surface can be better attached to the surface of the cylindrical structure, and the contact area between the piece to be detected and the groove wall of the mounting groove 1123 can be effectively increased. Therefore, the friction force between the piece to be detected and the wall of the mounting groove 1123 is increased, the piece to be detected can be prevented from sliding relative to the clamping block 112, and the reliability of the pressure test is improved conveniently.

In addition, the inside diameter of the mounting groove 1123 gradually decreases along the direction from the top surface of the first plate 11211 to the testing surface 1111, and in the process that the piece to be detected is put into the mounting groove 1123 from the top surface of the first plate 11211, the surface of the piece to be detected can gradually fit and be clamped with the groove wall of the mounting groove 1123, so that the piece to be detected can be conveniently clamped. Similarly, when the piece to be detected is separated from the mounting groove 1123, the piece to be detected can be gradually separated from the groove wall of the mounting groove 1123, so that the piece to be detected is conveniently separated.

It should be noted that, in other embodiments, the mounting groove 1123 may be changed according to the shape of the object to be detected. For example, when the member to be detected is a triangular pyramid, the groove wall of the mounting groove 1123 may be V-shaped.

The driving member 120 is mounted on the body 110 and includes a pneumatic cylinder 121 and a hydraulic cylinder 122 coaxially disposed with the pneumatic cylinder 121. The pneumatic cylinder 121 includes a pneumatic cylinder 1212 and a pneumatic piston rod 1211 extending through the pneumatic cylinder 1212. The hydraulic cylinder 122 includes a hydraulic piston rod 1221. The hydraulic piston rod 1221 is extendable and retractable to abut against one end of the pneumatic piston rod 1211. Specifically, the driving member 120 is located above the base 111 and is disposed on the frame 115. When the pneumatic cylinder 121 and the hydraulic cylinder 122 are coaxially disposed, the hydraulic cylinder 122 is also located above the pneumatic cylinder 121. The pneumatic piston rod 1211 is positionally aligned with the hydraulic piston rod 1221.

The pneumatic cylinder 121 also includes a pneumatic piston (not visible). The pneumatic cylinder 1212 is a hollow mechanism having an air chamber. The air pressure piston is accommodated in the air cavity and separates the air cavity into a first air cavity and a second air cavity. The first air chamber is located on the upper side of the second air chamber. The first air cavity and the second air cavity are filled with air. The inner walls of the first air cavity and the second air cavity are also provided with a first air hole and a second air hole which are respectively communicated with the first air cavity and the second air cavity. The first air hole and the second air hole are respectively provided with a first air pressure valve and a second air pressure valve. The outside of pressure test machine is provided with the air supply, and the air supply communicates with first pneumatic valve and second pneumatic valve, and first pneumatic valve and second pneumatic valve are used for controlling first gas pocket and second gas pocket respectively and admit air.

A pneumatic piston rod 1211 is installed at one side of the pneumatic piston. Specifically, the pneumatic piston rod 1211 is disposed at a lower side of the pneumatic piston. The pneumatic piston rod 1211 is disposed through the second air chamber and extends out of the pneumatic cylinder 1212.

Specifically, when the first air pressure valve is opened and the second air pressure valve is closed, the air source can inflate the air pressure in the first air cavity into the first air cavity to be greater than the air pressure in the second air cavity, and air pressure difference is generated on two sides of the air pressure piston. The pneumatic piston is pushed to slide the pneumatic piston rod 1211 downward, so that the portion of the pneumatic piston rod 1211 extending out of the pneumatic cylinder 1212 is increased. In the process of inflating the first air cavity, the volume of the first air cavity is increased, and the volume of the second air cavity is gradually reduced. To prevent the pneumatic piston rod 1211 from being pushed hard due to the excessive air pressure in the second air chamber, the second air chamber should be properly deflated while the first air chamber is inflated.

When the pneumatic piston rod 1211 needs to be reset, the second pneumatic valve is opened, the first pneumatic valve is closed, and the air source inflates the second air cavity. The air pressure in the second air cavity is gradually greater than that in the first air cavity, and the air pressure difference between the second air cavity and the first air cavity pushes the air pressure piston to drive the air pressure piston rod 1211 to reset. Meanwhile, the first air cavity is deflated. After the pneumatic piston rod 1211 is reset, the air volumes in the first air cavity and the second air cavity are restored to the initial values before the pneumatic piston rod 1211 is started.

The hydraulic cylinder 122 further includes a hydraulic cylinder body 1222 (and a hydraulic piston (not shown), the hydraulic cylinder body 1222 is a hollow mechanism having a hydraulic cavity, the hydraulic piston is received in the hydraulic cavity, and separates the hydraulic cavity into a first hydraulic cavity and a second hydraulic cavity, the first hydraulic cavity is located on the upper side of the second hydraulic cavity, the first hydraulic cavity and the second hydraulic cavity are filled with liquid, the inner walls of the first hydraulic cavity and the second hydraulic cavity are further provided with a first hydraulic hole and a second hydraulic hole respectively communicated with the first hydraulic cavity and the second hydraulic cavity, the first hydraulic hole and the second hydraulic hole are respectively provided with a first hydraulic valve and a second hydraulic valve, a hydraulic source is arranged outside the pressure testing machine and is communicated with the first hydraulic valve and the second hydraulic valve, and the first hydraulic valve and the second hydraulic valve are used for respectively controlling the liquid inlet of the first hydraulic hole and the second hydraulic hole.

The hydraulic piston rod 1221 is mounted to one side of the hydraulic piston. Specifically, the hydraulic piston rod 1221 is disposed on the lower side of the hydraulic piston. The hydraulic piston rod 1221 is inserted into the second hydraulic chamber and extends out of the hydraulic cylinder 1222.

Specifically, when the first hydraulic valve is opened and the second hydraulic valve is closed, the hydraulic source can fill liquid into the first hydraulic cavity, the liquid in the first hydraulic cavity is increased, and hydraulic pressure difference is generated on two sides of the hydraulic piston. The hydraulic piston is pushed to slide down the hydraulic piston rod 1221, so that the part of the hydraulic piston rod 1221 extending out of the hydraulic cylinder 1222 is increased. In the process of feed liquor in the first hydraulic cavity, the volume of the first hydraulic cavity is increased, and the volume of the second hydraulic cavity is gradually reduced. In order to prevent the piston rod from being pushed difficultly due to overlarge hydraulic pressure in the second hydraulic cavity, the second hydraulic cavity should be drained properly at the same time when the first hydraulic cavity feeds liquid.

When the hydraulic piston rod 1221 needs to retract, the second hydraulic valve is opened, the first hydraulic valve is closed, and liquid enters the second hydraulic cavity. The hydraulic pressure in the second hydraulic pressure chamber is gradually greater than the hydraulic pressure in the first hydraulic pressure chamber, and the hydraulic piston drives the hydraulic piston rod 1221 to partially retract into the hydraulic cylinder 1222. At the same time, the first hydraulic chamber is also drained.

In this embodiment, the end of the hydraulic piston rod 1221 extending out of the second hydraulic chamber is also connected to the pneumatic piston rod 1211. One end of the hydraulic piston rod 1221 is extendable to abut against one end of the pneumatic piston rod 1211. Specifically, when the hydraulic cylinder 122 is activated, the hydraulic piston rod 1221 slides in its axial direction, so that the portion of the hydraulic piston rod 1221 extending out of the hydraulic cylinder body 1222 is increased and abuts against one end of the pneumatic piston rod 1211. At this time, the hydraulic piston rod 1221 applies a force toward the pressure test detection position to the pneumatic piston rod 1211. Alternatively, when the hydraulic cylinder 122 is actuated, the hydraulic piston rod 1221 slides in the axial direction thereof and gradually retracts into the hydraulic cylinder body 1222, and at this time, the portion of the hydraulic piston rod 1221 extending out of the hydraulic cylinder body 1222 decreases, and the hydraulic pressure applies a force to the pneumatic piston rod 1211 facing away from the pressure test detection position. When the hydraulic cylinder 122 is not actuated, there is no functional relationship between the hydraulic piston rod 1221 and the pneumatic piston rod 1211.

Specifically, the action relationship between the hydraulic piston rod 1221 and the pneumatic piston rod 1211 is realized by a pneumatic piston. The end of the hydraulic piston rod 1221 extending out of the second hydraulic chamber is connected to the end of the pneumatic piston facing away from the pneumatic piston rod 1211. Specifically, the hydraulic piston rod 1221 and the pneumatic piston may be connected by a rope, a lock catch, or the like, and a certain buffering distance is provided between the hydraulic piston rod 1221 and the pneumatic piston. In this embodiment, the pneumatic cylinder 121 may be operated alone or in cooperation with the hydraulic cylinder 122. When the pneumatic cylinder 121 is started alone, no force acts between the hydraulic piston rod 1221 and the pneumatic piston, and when both the pneumatic cylinder 121 and the hydraulic cylinder 122 are started, the hydraulic piston rod 1221 moves downward to gradually abut against the pneumatic piston and drive the pneumatic piston to drive the pneumatic piston rod 1211 to move downward. At this time, the hydraulic pressure difference in the first hydraulic chamber and the second hydraulic chamber acts on the air pressure piston through the hydraulic piston and the hydraulic piston rod 1221, and is superimposed with the air pressure difference on the air pressure piston, so that the downward pressure difference acting on the air pressure piston is increased. This pressure difference acts on the pneumatic piston rod 1211 through the pneumatic piston, so that the downward pressure difference of the pneumatic piston rod 1211 increases. When the hydraulic piston rod 1221 moves upward, the hydraulic piston rod 1221 moves to a certain distance, and then the pneumatic piston is pulled to drive the pneumatic piston rod 1211 to move upward. At this time, the hydraulic pressure in the first hydraulic pressure chamber is smaller than the hydraulic pressure in the second hydraulic pressure chamber. The hydraulic piston creates an upward hydraulic pressure differential. The hydraulic pressure difference can offset part of the downward pressure difference on the pneumatic piston, so that the downward pressure difference applied to the pneumatic piston is reduced.

The pressure member 130 is used to provide pressure to the member to be sensed. The pressing member 130 is mounted on the end of the pneumatic piston rod 1211 remote from the hydraulic piston rod 1221 and aligned with the pressure test detecting position.

Specifically, when the pneumatic cylinder 121 is independently actuated, the pressing member 130 is subjected to a pressure difference between the first air chamber and the second air chamber. When the air pressure of the first air chamber is greater than that of the second air chamber, the air pressure piston is pushed and slides downward. The pneumatic piston rod 1211 and the extrusion member 130 slide downward under the driving of the piston until they contact the member to be detected. Along with the continuous input of the gas in the second gas cavity, the pressure difference between the first gas cavity and the second gas cavity is continuously increased, the extrusion piece 130 is blocked by the piece to be detected and stops sliding, but the pressure applied to the piece to be detected is also continuously increased, and the pressure value is equal to the pressure difference between the second gas cavity and the first gas cavity. When the pressure value is increased to the preset pressure value, the second air cavity stops air transmission, the first air cavity stops air release, the extrusion piece 130 keeps the pressure at the preset pressure value for 5s, and the piece to be detected is subjected to pressure testing. After 5s, the second air cavity is filled with air, the first air cavity is deflated, and the air piston drives the air piston rod 1211 and the extrusion piece 130 to slide upwards until the extrusion piece 130 is separated from the piece to be detected.

A pressure sensor (not shown) for detecting the amount of pressure provided by the expression member 130.

Specifically, since the volume of the air source is constant, when the air source inputs air into the first air chamber, the pneumatic pressure in the air source fluctuates due to the decrease of the air, and the air pressure difference in the pneumatic cylinder 121 also fluctuates. The pressure provided by the extrusion member 130 to the member to be detected is derived from the air pressure difference between the second air chamber and the first air chamber, and therefore, the pressure provided by the extrusion member 130 will fluctuate. When the pressure holding is performed, the pressure value may not be maintained at the preset pressure value. Furthermore, in the process of multiple cycle tests of the to-be-detected piece, the influence of pressure fluctuation on the pressure test result cannot be eliminated, so that the performance of the to-be-detected piece cannot be accurately evaluated.

In the present embodiment, during pressure maintaining, if the pressure value is smaller than the preset pressure value, the hydraulic cylinder 122 is activated, and the portion of the hydraulic piston rod 1221 extending out of the hydraulic cylinder 1222 is increased. The hydraulic piston rod 1221 gradually abuts on one end of the pneumatic piston rod 1211, and applies a hydraulic pressure difference toward the pressing member 130 to the pneumatic piston rod 1211. This hydraulic pressure difference is superimposed on the air pressure difference of the pneumatic cylinder 121, so that the downward pressure of the pneumatic piston rod 1211 increases. And the pressing member 130 is mounted on the air cylinder rod 1211, the pressing force provided by the pressing member 130 is also increased. When the pressure value is greater than the preset pressure value, the hydraulic cylinder 122 is also activated, the portion of the hydraulic piston rod 1221 retracted into the hydraulic cylinder 1222 is increased, and the portion extending out of the hydraulic cylinder 1222 is decreased. The hydraulic piston rod 1221 generates an upward hydraulic pressure difference, which cancels the pneumatic pressure difference of the pneumatic cylinder 121, so that the downward pressure of the pneumatic piston rod 1211 decreases. The pressing member 130 is mounted on the air cylinder rod 1211, and thus the pressing force provided by the pressing member 130 is also reduced. Therefore, under the action of the hydraulic cylinder 122 and the pneumatic cylinder 121, the pressure applied to the to-be-detected member by the extrusion member 130 in the pressure maintaining process can be maintained at the preset pressure value, and the test accuracy is high.

In one embodiment, the pressure tester further includes a controller (not shown) electrically connected to the pressure sensor and the hydraulic cylinder 122.

The controller is configured to control the actuation of the hydraulic cylinder 122 based on the pressure value such that the hydraulic piston rod 1221 applies a force to the pneumatic piston rod 1211 toward or away from the extrusion member 130. Specifically, indicator lights associated with the controller, control displays, and the like are mounted on one of the mounts 114. The body 110 is also provided with a switch 192 for triggering the controller.

During the pressurize, if the pressure value is less than the preset pressure value, the controller controls the hydraulic cylinder 122 to start, so that the extrusion piece 130 can provide the pressure increase of the piece to be detected, and the pressure increase is to the preset pressure value. If the pressure value is greater than the preset pressure value, the controller also controls the hydraulic cylinder 122 to start, the hydraulic piston rod 1221 moves upward to a certain distance, and pulls the pneumatic piston rod 1211 to move upward, the upward hydraulic pressure difference between the first hydraulic cylinder 122 and the second hydraulic cylinder 122 can offset a part of the pneumatic pressure difference in the pneumatic cylinder 121, so that the pressure difference acting on the pneumatic piston is reduced, the stress on the extrusion member 130 is reduced, and the pressure provided by the application member is also reduced to the preset pressure value. Therefore, the controller is configured to make the pressure tester more intelligent in starting and operating the hydraulic cylinder 122.

In addition, in the present embodiment, the pressing force applied to the member to be detected by the pressing member 130 is generally large. If the hydraulic cylinder 122 providing a larger pressure is used alone, it may be inconvenient to apply the pressure due to the higher cost and larger volume of the hydraulic cylinder 122. In the present application, however, the pneumatic cylinder 121 plays a major role in the process of pressing the pressing member 130. The pneumatic cylinder 121 is smaller and cheaper to use, provided that the same force can be applied to the pressing member 130. Because the range of pressure fluctuations resulting from gas fluctuations is relatively small, the hydraulic cylinder 122 of the present application is relatively small in volume and has a limited ability to provide pressure. The hydraulic cylinder 122 only requires a fine adjustment of the applied force, and therefore the cost of the hydraulic cylinder 122 in this application is relatively low. Therefore, by providing the pneumatic cylinder 121 and the hydraulic cylinder 122, the stability of the pressure during the pressing process can be maintained, and the production cost of the pressure tester can be reduced.

In one embodiment, the pressure tester further includes a position sensor (not shown). The position sensor is disposed on the pressing member 130 and electrically connected to the controller. The position sensor is used for detecting the position of the extrusion member 130, and the controller controls the air intake and exhaust amounts of the pneumatic cylinder 121 according to the position of the extrusion member 130.

Specifically, in order to have a sufficient space for facilitating the installation of the member to be detected, the pressing member 130 is spaced from the pressure test detecting position by a certain distance before the pneumatic cylinder 121 and the hydraulic cylinder 122 are not actuated. When the member to be detected is mounted, the pneumatic cylinder 121 first drives the pressing member 130 to slide downward. At first, the distance between the extrusion piece 130 and the piece to be detected is far, and in order to improve the pressure testing efficiency, the air input in the first air cavity and the air output in the second air cavity are controlled, and the descending speed of the extrusion piece 130 can be controlled at 10 mm/s. When the position sensor detects that the distance between the extrusion piece 130 and the piece to be detected is 5mm, the controller can control the descending speed of the extrusion piece 130 at 1mm/s by controlling the air inflow in the first air cavity and the air outflow in the second air cavity, so that the extrusion piece 130 is prevented from descending too fast and generating too large impact between the extrusion piece 130 and the piece to be detected, and the piece to be detected is prevented from being damaged. The pressing member 130 is gradually lowered until it comes into contact with the member to be detected. By providing the position sensor, the position of the pressing member 130 can be detected, and the sliding speed of the pressing member 130 can be controlled, so that the member to be detected can be prevented from being damaged due to large impact generated between the pressing member 130 and the member to be detected. Meanwhile, the pressing member 130 can be prevented from being damaged by the reverse acting force applied to the pressing member 130 by the member to be detected.

In one embodiment, the pressure tester further comprises a guide rail 193 and a connection block 160. The guide rail 193 is installed to the body 110 and extends in a direction parallel to a line connecting the driving member 120 and the pressing member 130, the driving member 120 is connected to the guide rail 193 through the connecting block 160, and the driving member 120 is operable to be slidable in the extending direction of the guide rail 193. Specifically, the direction of the line connecting the driving member 120 and the pressing member 130 is the vertical direction.

Specifically, sliding the drive member 120 along the guide track 193 allows for coarse adjustment of the distance between the expression member 130 and the member to be detected.

Normally, the diameter of the piece to be detected is fixed. The connecting block 160 and the guide rail 193 are provided with threaded holes, and screws are arranged in the threaded holes on the connecting block 160 and the guide rail 193 in a penetrating way so as to fix the driving member 120. After the member to be tested is placed at the pressure test position, the pneumatic piston rod 1211 drives the extrusion member 130 to slide up and down to complete the pressure test of the member to be tested.

If the diameter of the piece to be detected is increased, the screw can be taken out, the connecting block 160 is operated to drive the driving member 120 to slide upwards along the guide rail 193, so that the distance between the driving member 120 and the pressure test detection position is increased, and a sufficient space is reserved for placing the piece to be detected. If the diameter of the piece to be detected is reduced, the operation connecting block 160 drives the driving member 120 to slide downwards along the guide rail 193, so that the distance between the driving member 120 and the piece to be detected is reduced, the time of the extrusion member 130 moving in the process of contacting with the piece to be detected is reduced, and the pressure testing efficiency is improved.

Specifically, in the present embodiment, there are two connection blocks 160, and the pneumatic cylinder 121 and the hydraulic cylinder 122 are respectively connected to the guide rail 193 through the connection blocks 160 in a transmission manner. A through hole is formed in one end of each connecting block 160, the pneumatic cylinder body 1212 penetrates through the through hole of one connecting block 160, and the hydraulic cylinder body 1222 penetrates through the through hole of the other connecting block 160, so that the pneumatic cylinder 121, the hydraulic cylinder 122 and the connecting blocks 160 are fixed. The fixing mode is simple and easy to implement, an external fastener is not needed, and the production cost of the pressure tester can be conveniently reduced.

It should be noted that, during the process of pushing the pneumatic cylinder 121 and the hydraulic cylinder 122 to slide along the guide rail 193, the pneumatic cylinder 121 and the hydraulic cylinder 122 should move synchronously, and the relative speed between the pneumatic cylinder 121 and the hydraulic cylinder 122 should be zero, so as to prevent the relative buffer distance between the hydraulic cylinder 122 and the pneumatic cylinder 121 from changing and affecting the movement of the pneumatic piston rod 1211 driven by the hydraulic piston rod 1221.

Through setting up guide rail 193 and connecting block 160, guide rail 193 still can play the guide effect to the slip of driving piece 120 to prevent that driving piece 120 from rocking and leading to extruded piece 130 and wait to detect the contact position of piece and change at gliding in-process, lead to the unable unity of contact position and influence the precision of test in the in-process of many times of cycle test.

Specifically, in one embodiment, the pressure testing machine further includes an anti-rotation block 170 and a connection rod 180. The air pressure piston rod 1211 is inserted into the rotation preventing block 170, and the rotation preventing block 170 is connected to the connecting block 160 through the connecting rod 180.

Specifically, the rotation-preventing block 170 is provided with a through hole, and one end of the pneumatic piston rod 1211 extending out of the pneumatic cylinder 1212 is inserted through the through hole and is slidable relative to the hole wall of the through hole. The rotation-preventing block 170 is located below the connecting block 160, and two opposite ends of the connecting rod 180 are connected with the rotation-preventing block 170 and the connecting block 160, respectively. The connection block 160 is fixed to the guide rail 193 during the pressure test, and at this time, the position of the anti-rotation block 170 connected to the connection block 160 is also fixed. Therefore, when the air piston rod 1211 is inserted through the rotation preventing block 170 and drives the extrusion member 130 to slide, the rotation preventing block 170 guides the air piston rod 1211 and prevents the air piston rod 1211 from rotating. To prevent the contact positions of the pneumatic piston rod 1211 and the pressing member 130 with the member to be detected from being changed. The movement of the pneumatic piston rod 1211 and the pressing member 130 is relatively stable only when sliding occurs. Therefore, the pressure provided by the extrusion part 130 to the piece to be detected is stable and has small fluctuation, so that the pressure testing machine has a good testing effect.

In one embodiment, the hydraulic piston rod 1221 is also connected to the corresponding connecting block 160 of the hydraulic piston rod 1221 through another rotation preventing block 170 and the connecting rod 180, so as to prevent the hydraulic piston rod 1221 from shifting and failing to abut against the pneumatic piston rod 1211 during sliding. In one embodiment, the pressure tester further comprises a pneumatic pressure regulating valve 140 and a hydraulic pressure regulating valve 150. The air pressure regulating valve 140 is electrically connected to the controller. The air pressure regulating valve 140 communicates with the interior of the pneumatic cylinder 121 through the hydraulic pressure regulating valve 150. The hydraulic pressure adjusting valve 150 contains lubricating oil, and the gas passing through the gas pressure adjusting valve 140 penetrates the lubricating oil and enters the pneumatic cylinder 121.

Specifically, the controller is electrically connected to the air pressure adjusting valve 140, and controls the amount of intake air of the pneumatic cylinder 121 through the air pressure adjusting valve 140.

Specifically, the air pressure adjusting valve 140 is provided with a first air path and a second air path. The first air passage and the second air passage are also respectively communicated with the hydraulic regulating valve 150. The hydraulic pressure control valve 150 contains lubricating oil. The first air passage and the second air passage are respectively communicated with the first electromagnetic valve and the second electromagnetic valve through the hydraulic regulating valve 150. When the first air pressure regulating valve 140 is opened, the first air passage transmits air into the first air cavity. When the second air pressure valve is opened, the second air chamber conveys air to the second air chamber. The gas must also penetrate the oil as it enters the cylinder 121.

The opening degree of the air pressure regulating valve 140 is related to the amount of air taken in the pneumatic cylinder 121. The larger the opening degree of the air pressure adjusting valve 140 is, the larger the amount of intake air in the pneumatic cylinder 121 is. And the intake air amount is related to the pressure applied by the pressing member 130 to the member to be detected during the pressure test. The larger the intake air amount is, the larger the difference in air pressure between both sides of the air pressure piston is. Then the greater the pressure provided by the expression member 130 on the member to be detected.

Due to the different materials of the part to be inspected, the pressure applied by the pressing member 130 to the part to be inspected will also be different during the pressure test. Therefore, by providing the air pressure adjusting valve 140, when the material of the member to be detected changes, the controller can control the air input of the pneumatic cylinder 121 by controlling the opening degree of the air pressure adjusting valve 140, so that the pressure applied to the member to be detected by the extruding member 130 can meet the requirement.

In addition, a collecting pipe is provided in the air pressure regulating valve 140. The air supply typically compresses air and delivers it to the air pressure regulating valve 140 via conduit 191. The air contains more water vapor. By arranging the collecting pipe, water vapor can be deposited in the collecting pipe before entering the pneumatic cylinder 121, so that the water vapor is prevented from entering the pneumatic cavity along with the gas to influence the use of the pneumatic cylinder 121.

And hydraulic pressure regulating valve 150's setting, hydraulic pressure regulating valve 150 is the internal lubricating oil that contains, and on the one hand, lubricating oil has the adsorption to steam, and gas is when penetrating lubricating oil, and lubricating oil can be to gas further drying. On the other hand, since the lubricating oil also has a vapor pressure at normal temperature, the gas will carry a part of the lubricating oil vapor into the pneumatic cylinder 121 during the process of penetrating the lubricating oil, and lubricate the piston, so as to prevent the piston from being worn due to the large friction force between the piston and the inner wall of the pneumatic cylinder 121. Generally, the lubricant vapor enters the cylinder 121 and may cover the inner wall of the cylinder 121.

Specifically, the air pressure regulating valve 140 and the hydraulic pressure regulating valve 150 are both mounted on the other mounting bracket 114.

In one embodiment, the pressing member 130 is located above the base 111 and below the pneumatic cylinder 121. The middle part of the extrusion member 130 is provided with a fixing hole, and one end of the air pressure piston rod 1211 extending out of the second air cavity is clamped in the fixing hole, so that the installation of the air pressure piston rod 1211 and the extrusion member 130 can be realized. In this way, the extrusion member 130 and the air pressure piston rod 1211 can be separated and installed by external force without using a fastener, and the structure is simple and the assembly is convenient.

In one embodiment, the clearance hole 1113 in the base 111 is aligned with the position of the pneumatic piston rod 1211 and the extrusion member 130. If the pressing member 130 is inadvertently dropped from the air cylinder rod 1211, the air cylinder rod 1211 is just sliding down. The sliding of the pneumatic piston rod 1211 cannot be stopped in time by the inertia, and at this time, the pneumatic piston rod 1211 may slide to abut against the base 111, and may be broken due to the rigid contact between the base 111 and the pneumatic piston rod 1211. The position-avoiding hole 1113 is disposed such that the position-avoiding hole 1113 can avoid the pneumatic piston rod 1211 to prevent the base 111 from contacting the pneumatic piston rod 1211 to damage the pneumatic piston rod 1211.

In one embodiment, the driving member 120 and the pressing member 130 are aligned with the middle of the member to be detected, and the clearance hole 1113 is also aligned with the middle of the member to be detected. Therefore, the driving member 120 slides the pressing member 130, and the pressing member 130 can abut against the middle portion of the member to be detected. The pressure provided by the extrusion member 130 acts on the middle part of the piece to be detected, so that the piece to be detected can be prevented from toppling in one direction due to uneven stress on the two ends. Therefore, the piece to be detected can keep the stability of installation in the process of pressure test, thereby having better test reliability.

In one embodiment, the pressing member 130 is recessed toward one side of the pressure test detection site to form an abutting through slot 131.

The abutting through-groove 131 penetrates the pressing member 130. When the extrusion piece 130 abuts against the piece to be detected, the piece to be detected penetrates through the abutting through groove 131, and two opposite ends of the piece to be detected abut against the mounting grooves 1123 of the two clamping blocks 112 respectively. Through setting up the butt and leading to groove 131, the butt leads to groove 131 and mounting groove 1123 combined action, can treat from the top and the below of waiting to detect the piece and treat that the piece carries on spacingly to prevent to detect the piece slip, be convenient for promote the reliability of test.

Specifically, the groove wall of the abutting through groove 131 is a circular arc surface, and the inner diameter thereof gradually decreases in the direction from the base 111 to the pressing member 130. The pressing member 130 slides downward until it comes into contact and abuts with the member to be detected. And the cell wall that the butt led to groove 131 is the arc surface, and its internal diameter reduces along base 111 to extruded piece 130's direction gradually, consequently, when extruded piece 130 slides downwards gradually and with wait to detect a contact, the butt led to groove 131 has great notch size, can conveniently wait to detect that a stretches into to the butt led to groove 131 in. Along with the further downward movement of extruded piece 130, wait to detect the cell wall that a piece and butt lead to groove 131 can paste tightly gradually to it is fixed to wait to detect the piece and treat that the piece is pressed to be convenient for extruded piece 130. This arrangement also facilitates the separation of the extrusion member 130 from the member to be tested when the pressure test is complete.

Further, in an embodiment, the pressure testing machine further includes an elastic pad disposed on a side surface of the pressing member 130 facing the pressure testing detection position.

Because the member to be detected can be ceramic, if the downward sliding speed of the extrusion member 130 is too high, a large impact may be caused on the ceramic, resulting in cracks of the ceramic shovel. And set up the cushion at extruded piece 130 towards the surface of waiting to detect a piece, the cushion has the cushioning effect, when extruded piece 130 with wait to detect a contact, can offset the impact force that a part extruded piece 130 was treated and is detected the piece to prevent extruded piece 130 from striking to detect and detect a piece and lead to waiting to detect a damage.

Specifically, when the elastic pad is disposed on the pressing member 130, the elastic pad is completely accommodated in the abutting through groove 131 and laid on the groove wall of the abutting through groove 131.

When the pressure tester applies pressure, the piece to be detected is placed at the pressure test detection position, the pneumatic cylinder 121 is started, the pneumatic piston rod 1211 pushes the extrusion piece 130 to slide to the pressure test detection position under the driving of the pneumatic pressure, and the extrusion piece 130 provides pressure for the piece to be detected. The pressure sensor may detect a pressure value provided by the pressing member 130, and when the pressure value is less than a preset pressure value, the hydraulic piston rod 1221 is extended and abutted against one end of the pneumatic piston rod 1211, and a force toward the pressing member 130 is applied to the pneumatic piston rod 1211, which is superimposed with the air pressure difference of the pneumatic cylinder 121, so that the pneumatic piston rod 1211 is forced to increase. And the pressing member 130 is mounted on the air cylinder rod 1211, the pressing force provided by the pressing member 130 is also increased. When the pressure value is greater than the preset pressure value, the hydraulic piston rod 1221 retracts, and applies a force to the pneumatic piston rod 1211, which is away from the extrusion member 130, and the force is offset by the difference between the pressures in the pneumatic cylinder 121, so that the force applied to the pneumatic piston rod 1211 decreases, and further, the pressure provided by the extrusion member 130 decreases, so that the pressure value is maintained at the preset pressure value. Therefore, the pressure testing machine can maintain the pressure value of the extrusion piece 130 acting on the piece to be detected at the preset pressure value in the process of carrying out pressure testing on the piece to be detected, and has high testing accuracy.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A thermal shock resistance test system is provided with a heating station, a quenching station and a pressing station, and is characterized by comprising:

2. A thermal shock resistance test system as claimed in claim 1, wherein the heating element is a heating furnace, the heating furnace includes a housing and a heating body, the housing has a heating cavity, and the heating body is received and fixed in the heating furnace.

3. The thermal shock resistance test system of claim 2, wherein the furnace further comprises an insulating body received and fixed in the heating chamber, the insulating body forming an insulating portion receiving the element to be tested.

4. The thermal shock resistance test system according to claim 3, wherein the heating furnace is cube-shaped, the heating body includes two heating strips, the two heating strips are disposed on two opposite inner side walls of the heating cavity, the insulating body includes an insulating bottom plate and two insulating rods, the insulating bottom plate covers the bottom wall of the heating cavity, and the two insulating rods are disposed on the insulating bottom plate at intervals and clamped between the two heating strips to form the insulating portion with the insulating bottom plate.

5. The thermal shock resistance test system of claim 1, wherein the cooling piece is a cold water pool, the cold water pool comprises a first cold water pool and a second cold water pool, and the first cold water pool and the second cold water pool are used for quenching the piece to be detected in sequence.

6. The thermal shock resistance test system of claim 1, wherein the press is a pressure tester comprising:

the body is provided with a pressure test detection position;

a pressure sensor for detecting a pressure value provided by the extrusion.

7. The thermal shock resistance test system of claim 6, further comprising a controller electrically connected to the pressure sensor and the hydraulic cylinder.

8. A thermal shock resistance testing system according to claim 7, further comprising a hydraulic pressure regulating valve and an air pressure regulating valve electrically connected to the controller, wherein the air pressure regulating valve is communicated with the interior of the pneumatic cylinder through the hydraulic pressure regulating valve, lubricating oil is contained in the hydraulic pressure regulating valve, and gas passing through the air pressure regulating valve penetrates through the lubricating oil and then enters the interior of the pneumatic cylinder.

9. The thermal shock resistance test system of claim 6, wherein a side of the extrusion facing the pressure test detection site is recessed to form an abutting through slot.

10. The thermal shock resistance test system of claim 6, further comprising an elastic pad disposed on a side surface of the extrusion facing the pressure test detection site.