High and low temperature tensile testing machine

Abstract

The utility model discloses a high and low temperature tensile testing machine, including: a constant temperature box, the constant temperature box is provided with a constant temperature chamber, a placement port and an air release port, the placement port is connected with the front end of the constant temperature chamber, and the air release port is connected with the rear end or side of the constant temperature chamber; a sealing door and a protective door, the sealing door and the protective door are both movably connected with the constant temperature box, and the sealing door is used to block the placement port; an air release control structure, the air release control structure includes an air release block, an air release drive member and a reset elastic member; when the protective door is closed, the air release drive member drives the air release block to block the air release port, and when the protective door is opened, the reset elastic member drives the air release block away from the air release port. This scheme can realize the function of automatic air release when the protective door is opened, so as to avoid the operator continuing to open the sealing door, and a large amount of high temperature or low temperature gas flows out from the placement port to the outside to cause discomfort or injury to the operator, thereby effectively ensuring the personal safety of the operator.

Description

Technical Field

[0001] The utility model relates to the technical field of testing machines, in particular to a high and low temperature tensile testing machine. Background Art

[0002] Tensile testing machine is a mechanical force testing machine used to test the mechanical properties of materials such as static load, stretching, compression, bending, shearing, peeling, etc. The temperature change has a very serious impact on the test piece. Therefore, high and low temperature tensile testing machines have appeared in the market, which are equipped with a constant temperature box, and the tensile test is carried out in the constant temperature box.

[0003] However, at the end of the test, the temperature of the thermostat is either very high or very low, and the door is generally hinged on the side of the sample placement port of the thermostat. Therefore, when the door is opened, the gas leaks quickly from the sample placement port of the thermostat, which can easily burn the skin. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to provide a high and low temperature tensile testing machine to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0005] The solution of the utility model to solve the technical problem is:

[0006] High and low temperature tensile testing machine, including:

[0007] A thermostatic box, wherein the thermostatic box is provided with a thermostatic chamber, a placement port and an air release port, wherein the placement port is communicated with the front end of the thermostatic chamber, and the air release port is communicated with the rear end or side of the thermostatic chamber;

[0008] A sealing door and a protective door, wherein the sealing door and the protective door are both movably connected to the thermostat, and the sealing door is used to block the placement opening;

[0009] The air leakage control structure includes an air leakage stopper, an air leakage driving member and a reset elastic member; when the protection door is closed, the air leakage driving member drives the air leakage stopper to block the air leakage port, and when the protection door is opened, the reset elastic member drives the air leakage stopper away from the air leakage port.

[0010] Through the above technical solution, when the protection door is closed, the protection door will abut against the air leakage driving member, and then the air leakage driving member will drive the air leakage blocker to approach the air leakage port, so that the air leakage blocker blocks the air leakage port; when the protection door is opened, the reset elastic member will drive the air leakage blocker to move forward, so that the air leakage blocker is away from the air leakage port, thereby realizing the function of automatic air leakage when the protection door is opened, so as to avoid the operator continuing to open the sealing door, and causing discomfort or injury to the operator due to a large amount of high-temperature or low-temperature gas flowing out from the placement port to the outside, thereby effectively protecting the personal safety of the operator.

[0011] As a further improvement of the above technical solution, a pressure relief component is provided at the rear end of the thermostatic box.

[0012] Through the above technical solution, by providing a pressure relief component, it is possible to avoid excessive pressure in the constant temperature box and avoid the generation of a high temperature and high pressure environment in the constant temperature box.

[0013] As a further improvement of the above technical solution, there are multiple pressure relief components, and the multiple pressure relief components are evenly arranged at the rear end of the constant temperature box.

[0014] Through the above technical solution, the pressure relief component is arranged at the rear end of the thermostatic box, which can greatly avoid the high-temperature gas from flowing forward when the pressure relief component releases pressure, thereby greatly reducing the discomfort of the staff in front of the thermostatic box.

[0015] As a further improvement of the above technical solution, the thermostatic box is installed with a shielding structure, and the shielding structure is arranged behind the pressure relief component, and the shielding structure and the pressure relief component are spaced apart.

[0016] Through the above technical solution, the shielding structure is used to shield the high-temperature gas flowing out of the pressure relief component to prevent people from being scalded by the high-temperature gas when passing behind the thermostatic box.

[0017] As a further improvement of the above technical solution, the air leakage port is arranged on the side of the constant temperature box, the air leakage drive component is slidably connected to the constant temperature box along the front and rear directions, and the front end of the air leakage drive component is used to abut against the protection door. When the protection door is closed, it will drive the air leakage drive component to move backward.

[0018] Through the above technical solution, the air leakage port is arranged on the side of the thermostatic box, so that the overall structure of the air leakage control structure can be simpler.

[0019] As a further improvement of the above technical solution, one side of the protection door is hinged to the constant temperature box, and the other side is provided with a locking piece, and the protection door and the constant temperature box are locked by the locking piece.

[0020] Through the above technical solution, the locking member locks the protection door to prevent the protection door from being accidentally opened.

[0021] As a further improvement of the above technical solution, it also includes a tension component; the tension component includes two fixing clamps and a tension driving unit, the two fixing clamps are both arranged in the constant temperature chamber, and the tension driving unit is used to drive the two fixing clamps to move away from or closer to each other.

[0022] Through the above technical solution, the tension component is used to perform a tension test on the rubber strip.

[0023] As a further improvement of the above technical solution, the fixing clamp includes a clamping seat and two clamping blocks; the two clamping blocks are arranged opposite to each other, and a clamping space is formed between the two clamping blocks. At least one of the clamping blocks is set as a movable clamping block, and the movable clamping block is adjustably connected to the clamping seat through an adjustment structure so that the two clamping blocks can be moved closer or farther away.

[0024] Through the above technical solution, at least one clamping block is set as a movable clamping block, so that the width of the clamping space formed between the two clamping blocks can be changed, thereby adapting to and clamping rubber strips of different specifications.

[0025] As a further improvement of the above technical solution, the two clamping blocks in the same fixed clamp are both configured as movable clamping blocks.

[0026] As a further improvement of the above technical solution, the adjustment structure includes a threaded hole and an adjusting screw; the threaded hole is arranged on the side wall of the clamp seat, the adjusting screw is threadedly connected to the threaded hole, one end of the adjusting screw is rotatably connected to the movable clamping block, and the other end is provided with a wrench structure.

[0027] The beneficial effect of the utility model is that the personal safety of the operating personnel can be effectively guaranteed.

[0028] The utility model is used in the technical field of testing machines. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following is a brief description of the drawings required for the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present utility model, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0030] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0031] Figure 2 yes Figure 1 A partial enlarged schematic diagram of part A;

[0032] Figure 3 It is a partial cross-sectional structural schematic diagram of a thermostatic box according to an embodiment of the utility model.

[0033] In the figure, 100, frame; 200, constant temperature box; 210, air release port; 220, placement port; 230, constant temperature chamber; 250, shielding structure; 300, sealing door; 400, protection door; 410, locking member; 500, air release control structure; 510, reset elastic member; 520, air release drive member; 530, air release stopper; 620, fixing clamp; 621, movable clamping block; 622, clamping seat; 623, adjusting screw; 624, wrench structure. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other.

[0035] Reference Figures 1 to 3 The high and low temperature tensile testing machine comprises: a frame 100, a constant temperature box 200, a sealing door 300, a protection door 400, an air release control structure 500 and a tensile component.

[0036] Specifically, the thermostat 200 of the present solution is roughly in the shape of a rectangular parallelepiped. The thermostat 200 is fixedly installed at the lower part of the frame 100. The thermostat 200 is provided with an air release port 210, a placement port 220 and a constant temperature chamber 230.

[0037] The placement opening 220 is disposed at the front end of the constant temperature chamber 230 . The placement opening 220 is communicated with the constant temperature chamber 230 . The placement opening 220 is used for placing the product into the constant temperature chamber 230 .

[0038] The air vent 210 is arranged on the side or rear end of the constant temperature chamber 230, and the air vent 210 is connected to the constant temperature chamber 230. Specifically, in the present embodiment, the air vent 210 is arranged on the side of the constant temperature chamber 230. In other embodiments, the air vent 210 can also be arranged at the rear end of the constant temperature chamber 230. The air vent 210 is used to vent the heated and expanded gas in the constant temperature box 200 to avoid a large amount of high-temperature gas flowing out from the placement port 220 to the outside when the constant temperature box 200 is opened, thereby avoiding burns caused by the high-temperature gas when the constant temperature box 200 is opened.

[0039] Specifically, in this embodiment, a pressure relief component is provided at the rear end of the thermostat 200. The pressure relief component is a conventional pressure relief valve. By providing the pressure relief component, excessive pressure in the thermostat 200 can be avoided, and a high temperature and high pressure environment can be avoided in the thermostat 200.

[0040] Specifically, in this embodiment, the number of pressure relief components is set to multiple, and the multiple pressure relief components are evenly arranged at the rear end of the thermostat 200. In other embodiments, the number of pressure relief components can also be set to only one, and those skilled in the art can select the number of pressure relief components according to actual needs.

[0041] Specifically, in this embodiment, the thermostat 200 is further equipped with a shielding structure 250, which is disposed at the rear of the thermostat 200 and at the rear of the pressure relief component. The shielding structure 250 and the pressure relief component are spaced apart to prevent the shielding structure 250 from blocking the pressure relief component, thereby ensuring that the pressure relief component can work normally. The shielding structure 250 is used to shield the high-temperature gas flowing out of the pressure relief component to prevent people from being scalded by the high-temperature gas when passing behind the thermostat 200.

[0042] The tension assembly includes a tension driving unit and a fixing clamp 620 .

[0043] The tension driving unit is fixed to the upper end of the frame 100. Specifically, in this embodiment, the tension driving unit is configured as a linear motor. In other embodiments, the tension driving unit can also be configured as a conventional linear driving device such as a linear cylinder or a linear hydraulic cylinder. Those skilled in the art can select the tension driving unit according to actual needs.

[0044] The number of the fixing clips 620 is set to two, and both fixing clips 620 are set in the constant temperature chamber 230. The two fixing clips 620 are arranged in the up-down direction, one fixing clip 620 is set as the first fixing clip 620, and the other fixing clip 620 is set as the second fixing clip 620. The first fixing clip 620 is fixedly installed on the bottom surface of the constant temperature chamber 230, and the second fixing clip 620 is connected to the output end of the tension driving unit through an axial member, and the second fixing clip 620 is set above the first fixing clip 620. The tension driving unit drives the two fixing clips 620 to move closer to or away from each other, thereby realizing the tension test of the thermal insulation strip.

[0045] In other embodiments, the first fixing clip 620 may be fixed to the top surface of the constant temperature box 200, and the second fixing clip 620 may be arranged below the first fixing clip 620. In other embodiments, two tension driving units may be arranged, and the two fixing clips 620 are respectively connected to the two tension driving units, and the two tension driving units respectively drive the two fixing clips 620, so that the two fixing clips 620 are close to each other or away from each other. Those skilled in the art may select the number of tension driving units and the installation positions of different fixing clips 620.

[0046] Specifically, the fixed clamp 620 includes a clamping block and a clamping seat 622. Specifically, in the present embodiment, the number of clamping blocks is set to two, the two clamping blocks are arranged opposite to each other, a clamping space is formed between the two clamping blocks, at least one of the clamping blocks is set to a movable clamping block 621, the movable clamping block 621 is movably connected to the clamping seat 622, an adjustment structure is provided between the movable clamping block 621 and the clamping seat 622, the clamping seat 622 and the movable clamping block 621 are adjustably connected through the adjustment structure, so that the two clamping blocks are close to or away from each other, thereby adjusting the width of the clamping space to clamp different rubber strips to be tested, specifically, in the present embodiment, both clamping blocks are set to movable clamping blocks 621, in other embodiments, one of the clamping blocks can also be set to movable clamping blocks 621, and the other clamping block can also be set to the fixed clamp 620 holding block, and the fixed clamp 620 holding block is fixedly connected to the clamping seat 622.

[0047] Specifically, in this embodiment, the adjustment structure includes an adjustment screw 623 and a threaded hole provided on the side wall of the clamp seat 622, and the adjustment screw 623 is threadedly connected with the threaded hole provided on the side wall of the clamp seat 622. One end of the adjustment screw 623 close to the movable clamping block 621 is rotatably connected with the movable clamping block 621, and the other end is provided with a wrench structure 624. Specifically, the wrench structure 624 can be provided with a hand lever or a hand wheel, etc., so as to manually rotate the adjustment screw 623, or the wrench structure 624 can be provided as a wrench groove provided at the end of the adjustment screw 623, and the staff can use a screwdriver to operate the wrench groove to manually rotate the adjustment screw 623, so as to adjust the position between the movable clamping block 621 and the clamp seat 622.

[0048] As can be seen from the figure, in order to enable the fixing clamp 620 to clamp rubber strips of different specifications, the movable clamping block 621 of the fixing clamp 620 can be adjusted relative to the clamping seat 622, so that the width of the clamping space between the two clamping blocks changes, so that the fixing clamp 620 can clamp rubber strips of different specifications.

[0049] The sealing door 300 is used to block the placement port 220. The sealing door 300 is movably connected to the thermostatic box 200. Specifically, in this embodiment, the sealing door 300 is hinged to the thermostatic box 200. More specifically, the left edge of the sealing door 300 is hinged to the thermostatic box 200. The sealing door 300 is provided with an operation opening. Specifically, the sealing door 300 is a transparent door-shaped component. A heat-insulating glove is fixed at the operation opening. The staff can operate the objects in the thermostatic chamber 230 with the heat-insulating glove, so that the objects in the thermostatic chamber 230 can be operated without opening the sealing door 300. In other embodiments, the sealing door 300 can also be set to be in a sliding connection with the thermostatic box 200. Those skilled in the art can select the specific connection method between the sealing door 300 and the thermostatic box 200 according to actual needs.

[0050] The protection door 400 is movably connected to the thermostatic box 200. Specifically, in the present embodiment, the protection door 400 is hingedly connected to the thermostatic box 200. More specifically, the left edge of the protection door 400 is hingedly connected to the thermostatic box 200. The right edge of the protection door 400 is provided with a locking member 410. The locking member 410 is provided with a stainless steel buckle or a bolt, latch, door lock or other structure. Those skilled in the art can select the specific structure of the locking member 410 according to actual needs. The locking member 410 locks the protection door 400 to prevent the protection door 400 from being accidentally opened.

[0051] Specifically, in this embodiment, the air leakage control structure 500 is disposed between the protection door 400 and the thermostatic box 200. The air leakage control structure 500 includes a resetting elastic member 510, an air leakage driving member 520 and an air leakage stopper 530.

[0052] The air leakage stopper 530 is a plate-shaped member, and the air leakage stopper 530 is slidably connected to the thermostatic box 200 , and the air leakage stopper 530 can slide along the front-back direction relative to the thermostatic box 200 . The air leakage stopper 530 is used to block the air leakage port 210 .

[0053] Specifically, in this embodiment, the air leakage drive member 520 and the air leakage stopper 530 are two parts of an integrated component, and the air leakage drive member 520 is arranged in front of the air leakage stopper 530. In other embodiments, the air leakage drive member 520 and the air leakage stopper 530 can also be set as two separate components. Those skilled in the art can select the specific structures of the air leakage drive member 520 and the air leakage stopper 530 according to actual needs. The air leakage drive member 520 is used to abut against the protection door 400, thereby driving the air leakage stopper 530 to move backward to achieve the blocking of the air leakage hole.

[0054] The resetting elastic member 510 is disposed between the air leakage stopper 530 and the thermostat 200. In this embodiment, the resetting elastic member 510 is configured as a spring. In other embodiments, the resetting elastic member 510 may also be configured as other elastic members, such as elastic sheets, and those skilled in the art may select the specific structure of the resetting elastic member 510 according to actual needs. The two ends of the resetting elastic member 510 are respectively in contact with the air leakage stopper 530 and the thermostat 200. The resetting elastic member 510 makes the air leakage stopper 530 always have a tendency to move forward, so that the air leakage stopper 530 cancels the blocking of the air leakage hole.

[0055] When the protection door 400 is closed, the protection door 400 will abut against the air leakage driving member 520, and then the air leakage driving member 520 will drive the air leakage blocker 530 to move backward, and the air leakage blocker 530 blocks the air leakage port 210; when the protection door 400 is opened, the reset elastic member 510 will drive the air leakage blocker 530 to move forward, so that the air leakage blocker 530 is away from the air leakage port 210, thereby realizing the function of automatic air leakage when the protection door 400 is opened, so as to avoid the operator continuing to open the sealing door 300, so that a large amount of high-temperature or low-temperature gas flows out from the placement port 220 to the outside to cause discomfort or injury to the operator, thereby effectively protecting the personal safety of the operator.

[0056] The preferred implementation modes of the present invention are specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. High and low temperature tensile testing machine, characterized by: include: A thermostatic box, wherein the thermostatic box is provided with a thermostatic chamber, a placement port and an air release port, wherein the placement port is communicated with the front end of the thermostatic chamber, and the air release port is communicated with the rear end or side of the thermostatic chamber; A sealing door and a protective door, wherein the sealing door and the protective door are both movably connected to the thermostat, and the sealing door is used to block the placement opening; The air leakage control structure includes an air leakage stopper, an air leakage driving member and a reset elastic member; when the protection door is closed, the air leakage driving member drives the air leakage stopper to block the air leakage port, and when the protection door is opened, the reset elastic member drives the air leakage stopper away from the air leakage port.

2. The testing machine according to claim 1, characterized in that: A pressure relief component is provided at the rear end of the thermostatic box.

3. The testing machine according to claim 2, characterized in that: There are multiple pressure relief components, and the multiple pressure relief components are evenly arranged at the rear end of the constant temperature box.

4. The testing machine according to claim 3, characterized in that: The thermostatic box is equipped with a shielding structure, which is arranged behind the pressure relief component, and the shielding structure is spaced apart from the pressure relief component.

5. The testing machine according to claim 1, characterized in that: The air leakage port is arranged on the side of the thermostatic box, the air leakage drive member is slidably connected to the thermostatic box along the front-to-back direction, the front end of the air leakage drive member is used to abut against the protection door, and when the protection door is closed, it will drive the air leakage drive member to move backward.

6. The testing machine according to claim 1, characterized in that: One side of the protection door is hinged to the thermostatic box, and the other side is provided with a locking piece, and the protection door and the thermostatic box are locked by the locking piece.

7. The testing machine according to claim 1, characterized in that: It also includes a tension component; the tension component includes two fixing clamps and a tension driving unit, the two fixing clamps are both arranged in the constant temperature chamber, and the tension driving unit is used to drive the two fixing clamps to move away from or closer to each other.

8. The testing machine according to claim 7, characterized in that: The fixing clamp comprises a clamp seat and two clamping blocks; the two clamping blocks are arranged opposite to each other, a clamping space is formed between the two clamping blocks, at least one of the clamping blocks is set as a movable clamping block, and the movable clamping block is adjustably connected to the clamp seat through an adjustment structure so that the two clamping blocks can be moved closer or farther away.

9. The testing machine according to claim 8, characterized in that: The two clamping blocks in the same fixed clamp are both configured as movable clamping blocks.

10. The testing machine according to claim 8, characterized in that: The adjustment structure comprises a threaded hole and an adjustment screw; the threaded hole is arranged on the side wall of the clamp seat, the adjustment screw is threadedly connected to the threaded hole, one end of the adjustment screw is rotatably connected to the movable clamping block, and the other end is provided with a wrench structure.

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