CN211061345U - High-low temperature environment lasting tensile testing machine - Google Patents

High-low temperature environment lasting tensile testing machine Download PDF

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Publication number
CN211061345U
CN211061345U CN201922180975.8U CN201922180975U CN211061345U CN 211061345 U CN211061345 U CN 211061345U CN 201922180975 U CN201922180975 U CN 201922180975U CN 211061345 U CN211061345 U CN 211061345U
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China
Prior art keywords
sample
low temperature
temperature environment
anchor clamps
gear
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CN201922180975.8U
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Chinese (zh)
Inventor
刘建宇
刘琳
陈勤勤
陈永胜
谢世军
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JINAN LIANGONG TESTING TECHNOLOGY CO LTD
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JINAN LIANGONG TESTING TECHNOLOGY CO LTD
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Abstract

The utility model discloses a high low temperature environment tensile test machine that lasts. It comprises a frame, the frame is a frame consisting of a bottom plate, a working table plate and an upper cross beam, a high-low temperature environment box is embedded between the working table plate and the upper cross beam, at least two sets of permanent tensile test mechanisms are arranged on the frame, each set of permanent tensile test mechanism comprises a lever balancing device and a loading mechanism, sample centre gripping anchor clamps, sample pull rod transmission, lever balancing unit sets up the top of entablature, loading mechanism includes the weight peg, connect the weight on the weight peg, the upper end of weight peg is connected with lever balancing unit's rear end, sample centre gripping anchor clamps set up at high low temperature environment incasement, sample centre gripping anchor clamps include sample anchor clamps and lower sample anchor clamps, it is connected with lever balancing unit's front end to go up sample anchor clamps, sample pull rod transmission sets up the lower part in the frame, the lower extreme of lower sample anchor clamps is passed through sample anchor clamps and is adjusted the pole and move about the pole and be connected with sample pull rod transmission.

Description

High-low temperature environment lasting tensile testing machine
Technical Field
The utility model relates to a lasting tensile test machine, in particular to lasting tensile test machine of high low temperature environment belongs to testing machine technical field.
Background
The high and low temperature environment endurance testing machine is applied to endurance tensile tests with temperature requirements of metal materials and non-metal material strips. The existing endurance testing machine in high and low temperature environment is low configuration endurance tensile testing equipment which is single-station, adopts asynchronous motor loading and has no deformation measuring system. Since most of the endurance tests are particularly long, the test period is common from 1 month to 1 year, which means that the long test period is a common phenomenon of the endurance test. The test period is long, so that the fault rate of the test equipment in the test period is required to be extremely low, and once the test equipment fails, the whole test result is invalid, so that huge time and financial waste can be caused to a user. Because the existing high-low temperature environment endurance testing machines are all single stations, a user needs to purchase a large number of devices to ensure the success rate of the test, and in addition, the requirement of the national standard on the number of single-group samples also causes the user to have to purchase a plurality of devices to meet the requirement, and finally, the input cost is huge. The existing endurance testing machine for high and low temperature environments adopts a motor to load a sample through a transmission system, the design of the system has the serious defect of power failure and load loss, once the whole loading system is out of control during power failure, the test result is invalid, and the loss is brought to users.
Disclosure of Invention
To the above-mentioned defect that exists among the prior art, the utility model provides a multistation, can be after the equipment outage short-term test validity, the lasting tensile test machine of high low temperature environment with low costs.
The utility model discloses a realize through following technical scheme: the utility model provides a lasting tensile test machine of high low temperature environment which characterized by: the device comprises a rack, wherein the rack is a frame consisting of a bottom plate, a working table plate, an upper cross beam, supporting legs fixedly connected between the bottom plate and the working table plate and four stand columns fixedly connected between the working table plate and four corners of the upper cross beam, a high-low temperature environment box is embedded in the frame between the working table plate and the upper cross beam, at least two sets of permanent tensile test mechanisms are arranged on the rack, each set of permanent tensile test mechanism comprises a lever balance device, a loading mechanism, a sample clamping fixture and a sample pull rod transmission device, the lever balance device is arranged at the top of the upper cross beam, the loading mechanism is a weight loading mechanism which comprises a weight hanging rod and a weight connected to the weight hanging rod, the upper end of the weight hanging rod is connected with the rear end of the lever balance device, the sample clamping fixture is arranged in the high-low temperature environment box and comprises an upper sample fixture and a lower sample fixture, the upper sample fixture is connected with the front end of the lever balancing device, the sample pull rod transmission device is arranged on the lower portion of the rack, and the lower end of the lower sample fixture is connected with the sample pull rod transmission device in a vertically movable mode through a sample fixture adjusting rod.
The utility model discloses the during operation, sample upper end is through last sample anchor clamps centre gripping, and the sample lower extreme is through sample anchor clamps centre gripping down. The high-low temperature environment box is used for providing a test environment required by the test. The weight balance weight loading mechanism loads the sample through the lever balancing device. The position of the lower sample clamp can be adjusted by driving the sample clamp adjusting rod to move through the sample pull rod transmission device, and the balance of the lever balance device can be guaranteed through the sample pull rod transmission device.
Furthermore, a weight buffer is arranged at the lower end of the weight hanging rod and connected with the working table plate. The weight buffer can provide falling buffer for the weight, and the working safety and reliability of the equipment are guaranteed.
Furthermore, the sample pull rod transmission device in the utility model can be any structural form which can drive the sample clamp adjusting rod to move in the prior art, in the utility model, the sample pull rod transmission device comprises a motor, a belt transmission mechanism, a worm and gear speed reducer, a chain transmission mechanism and a gear transmission mechanism, the motor is connected with the input end of the worm gear speed reducer through a belt transmission mechanism, the output end of the worm gear speed reducer is connected with the chain transmission mechanism, the gear transmission mechanism comprises a gear A and a gear B, the gear A is arranged on a driven sprocket shaft of the chain transmission mechanism, the sample clamp adjusting rod is of a screw rod structure, the sample clamp adjusting rod is in threaded fit connection with a driving sleeve arranged on the rack, the gear B is arranged on the driving sleeve, and the gear A is meshed with the gear B. The motor drives the worm gear speed reducer to rotate through the belt transmission mechanism, the worm gear speed reducer drives the gear A arranged on the driven chain wheel shaft of the chain transmission mechanism to rotate through the chain transmission mechanism, the driving sleeve is driven to rotate through the meshing transmission of the gear A and the gear B, the driving sleeve rotates to drive the sample clamp adjusting rod to move up and down, and the sample clamp adjusting rod drives the sample clamp to move up and down.
Furthermore, four sets of the permanent tensile test mechanisms are arranged on the rack. The four sets of permanent tensile test mechanisms can respectively carry out permanent tensile test, thereby being beneficial to improving the test efficiency and reducing the equipment cost.
Furthermore, in order to prevent the sample clamp adjusting rod from rotating, a rotation blocking mechanism for blocking the sample clamp adjusting rod from rotating is arranged on the rack.
Furthermore, the rotation blocking mechanism comprises a rotation blocking shaft and a rotation blocking block, the rotation blocking shaft is fixed on the rack, and the rotation blocking block is fixed on the rotation blocking shaft and connected with the sample clamp adjusting rod.
Furthermore, each set of the lasting tensile test mechanism is provided with a sample deformation measuring device.
Furthermore, the sample deformation measuring device comprises a stay wire encoder and two outgoing lines, one ends of the two outgoing lines are respectively connected with the sample clamping piece connected to the sample, and the other ends of the two outgoing lines are respectively connected with the stay wire encoder through lead reversing wheels. The deformation of the sample can be measured by a stay wire encoder.
The utility model has the advantages that: the utility model discloses can satisfy the lasting tensile sample of different grade type according to the position of the sample centre gripping anchor clamps in sample length adjustment test space, including metal and nonmetal finished product spare even. The utility model discloses a mechanical type weight counter weight loading mechanism even after the equipment outage, also can guarantee the experimental validity in short term, guaranteed that equipment trouble appears the back, experimental can not become invalid immediately, can retrieve time and financial loss for the user. By configuring the high-low temperature environment box, the environment temperature can be provided for the sample with the temperature requirement. Through adopting the multistation design, a plurality of lasting tensile test mechanisms can be tested simultaneously to the sample of different grade type, for the sample of same environmental requirement, different test type provides the test data that have the contrast more, and the design of multistation has simultaneously also avoided user's purchase a large amount of equipment, has reduced the input cost of user unit. In addition, by arranging the sample deformation measuring device, the mechanical lever balance system can automatically judge the sample deformation and automatically adjust the sample deformation to a balance state through electric appliance control, so that the uniform tension and the vertical state of the stress direction of the tested sample are ensured. The utility model discloses can satisfy the test demand of all common endurance test types almost, have very high practicality.
Drawings
Fig. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic top view of FIG. 1;
FIG. 3 is a left side view of FIG. 1 (the door of the high and low ambient box is not shown);
FIG. 4 is a right side view of FIG. 1;
FIG. 5 is a schematic structural view of a pull rod transmission part of a pilot test sample of the present invention;
FIG. 6 is a schematic view of the connection between the sample deformation measuring device and the sample according to the present invention;
FIG. 7 is a schematic left side view of FIG. 6;
FIG. 8 is an enlarged schematic view of the lower portion of FIG. 6;
fig. 9 is a schematic perspective view of the present invention (the door of the high and low temperature environmental chamber is not shown);
fig. 10 is a schematic perspective view of the present invention in another direction;
in the figure, 1, a bottom plate, 2, a motor, 3, a supporting leg, 4, a worm gear and worm reducer, 5, a workbench plate, 6, a high and low temperature environment box, 7, a column, 8, a lever balancing device, 9, an upper cross beam, 10, a weight hanging rod, 11, a weight, 12, a weight buffer, 13, a sample deformation measuring device, 14, an upper sample clamp, 15, a sample, 16, a lower sample clamp, 17, a sample clamp adjusting rod, 18, a scale supporting rod, 19, a scale, 20, a blocking shaft, 21, a blocking block, 22, a gear A, 23, a chain wheel, 24, a driven chain wheel shaft, 25, a driving sleeve, 26, a chain wheel, 27, a belt pulley, 28, a gear B, 29, a belt pulley, 30, a sample clamping piece, 31, an outgoing line, 32, a sample clamping piece, 33, an outgoing line, 34, a lead reversing wheel, 35, a lead reversing wheel, 36, a blocking line plate, 38. bracket 39, bracing wire encoder 40, rolling bearing.
Detailed Description
The invention will now be further described by way of non-limiting examples with reference to the accompanying drawings:
as shown in the attached drawing, the high-low temperature environment lasting tensile testing machine comprises a frame, wherein the frame is a frame which is composed of a bottom plate 1, a working table plate 5, an upper cross beam 9, supporting legs 3 fixedly connected between the bottom plate 1 and the working table plate 5, and four stand columns 7 fixedly connected between four corners of the working table plate 5 and four corners of the upper cross beam 9. A high-low temperature environment box 6 is embedded in the frame between the working bedplate 5 and the upper cross beam 9, and the high-low temperature environment box 6 is used for providing test environments with different temperature requirements required by tests, which is the prior art. At least two sets of permanent tensile test mechanisms are arranged on the rack, and four sets of permanent tensile test mechanisms are arranged in the embodiment. Each set of the permanent tensile test mechanism comprises a lever balance device 8, a loading mechanism, a sample clamping fixture and a sample pull rod transmission device, wherein the lever balance device 8 is movably arranged at the top of the upper cross beam 9 through a fulcrum of the lever balance device. The loading mechanism is a weight counterweight loading mechanism and comprises a weight hanging rod 10 and a weight 11 connected to the weight hanging rod 10, and the upper end of the weight hanging rod 10 is connected with the rear end of the lever balancing device 8. The lower end of the weight hanging rod 10 is also provided with a weight buffer 12 for providing falling buffer for the weight 11, and the weight buffer 12 is arranged on the working bedplate 5. A scale 19 is provided on the side surface of the weight hanging rod 10 via a scale support rod 18, and a pointer is provided on the weight hanging rod 10. The sample clamping fixture is arranged in the high-low temperature environment box 6 and comprises an upper sample fixture 14 and a lower sample fixture 16, and the upper sample fixture 14 is connected with the front end of the lever balancing device 8. The sample pull rod transmission device is arranged at the lower part of the rack, and the lower end of the lower sample clamp 16 is connected with the sample pull rod transmission device in a vertically movable manner through a sample clamp adjusting rod 17. In this embodiment, the sample pull rod transmission device includes a motor 2, a belt transmission mechanism, a worm gear speed reducer 4, a chain transmission mechanism, and a gear transmission mechanism. The belt transmission mechanism comprises a belt pulley 27, a belt pulley 29 and a V-shaped belt. The chain transmission mechanism comprises a chain wheel 26, a chain wheel 23 and a chain. The gear train includes gear a22 and gear B28. The motor 2 is fixed on the bottom plate 1, and a belt pulley 29 is arranged on a motor shaft of the motor 2. The worm gear speed reducer 4 is fixedly arranged at the lower part of the working table plate 5, a belt pulley 27 is arranged on an input shaft of the worm gear speed reducer 4, a chain wheel 26 is arranged on an output shaft of the worm gear speed reducer 4, and the belt pulley 27 and the belt pulley 29 are connected through a V-shaped belt. The table plate 5 is rotatably provided with a driven sprocket shaft 24 through a bearing, and the driven sprocket shaft 24 is provided with a sprocket 23 and a gear a 22. The sample clamp adjusting rod 17 is of a screw rod structure, and the sample clamp adjusting rod 17 is in threaded fit connection with a driving sleeve 25 fixedly mounted on the rack. Gear B28 is mounted on the drive sleeve 25, and gear a22 is in mesh with gear B28. The motor drives the worm gear reducer to rotate through the belt transmission mechanism, the worm gear reducer 4 drives the gear A22 to rotate through the chain transmission mechanism, the gear A22 drives the driving sleeve 25 to rotate through the gear B28 meshed with the gear A, the driving sleeve 25 is driven to rotate, and the sample clamp adjusting rod 17 moves up and down. In order to prevent the rotation of the sample clamp adjusting rod 17, in this embodiment, a rotation preventing mechanism for preventing the rotation of the sample clamp adjusting rod 17 is disposed on the rack, the rotation preventing mechanism includes a rotation preventing shaft 20 and a rotation preventing stopper 21, the rotation preventing shaft 20 is fixed on the rack, and the rotation preventing stopper 21 is fixed on the rotation preventing shaft 20 and connected to the sample clamp adjusting rod 17. The rotation of the sample holder adjusting lever 17 is restricted by the rotation blocking stopper and the rotation blocking shaft.
In this embodiment, each set of the endurance tensile testing mechanism is provided with a sample deformation measuring device 13. The sample deformation measuring device 13 includes a wire encoder 39, and two lead-out wires 31 and 33. The stay wire encoder 39 is fixed on the work table plate, and the stay wire encoder 39 is the prior art. One end of the lead wire 31 is connected to the sample holding piece 30, and the other end of the lead wire 31 is connected to the wire encoder 39 via the lead switching wheel 34. One end of the lead wire 33 is connected to the sample holding piece 32, and the other end of the lead wire 33 is connected to the wire encoder 39 via the lead switching wheel 35. The lead reversing wheel 34 and the lead reversing wheel 35 are arranged on the support 38, and rolling bearings are arranged in the lead reversing wheel and can rotate freely, so that resistance of the lead reversing wheel to lead wires is eliminated. The bracket 38 is provided with thread blocking plates 36 and 37 corresponding to the two lead reversing wheels. The sample holding piece 30 and the sample holding piece 32 are attached to different positions of the sample, respectively.
The utility model discloses the during operation, with the upper end clamping of sample 15 on last sample anchor clamps 14, according to the position of sample anchor clamps 16 under the length adjustment of sample, then with the lower extreme centre gripping of sample 15 under on sample anchor clamps 16. The position of the lower sample holder 16 is adjusted up and down by the sample pull rod actuator via the electrical control system. After the sample is clamped, the lead-out wire of the sample deformation measuring device 13 is clamped at a predetermined position of the sample 15. And then the weight 11 is placed on the weight tray at the lower end of the weight hanging rod 10 according to the national standard or the actual test requirement. The lever balance device 8 is adjusted to balance according to the position of the pointer on the weight hanging rod 10 on the scale 19. Four groups of samples are respectively installed on 4 stations as required. And closing the box door of the high-low temperature environment box 6, and starting the equipment control system to start the test.
Other parts in this embodiment are the prior art, and are not described herein again.

Claims (8)

1. The utility model provides a lasting tensile test machine of high low temperature environment which characterized by: the device comprises a rack, wherein the rack is a frame consisting of a bottom plate (1), a working table plate (5), an upper cross beam (9), supporting legs (3) fixedly connected between the bottom plate (1) and the working table plate (5) and four stand columns (7) fixedly connected between the working table plate (5) and four corners of the upper cross beam (9), a high-low temperature environment box (6) is embedded in the frame between the working table plate (5) and the upper cross beam (9), at least two sets of permanent tensile test mechanisms are arranged on the rack, each set of permanent tensile test mechanism comprises a lever balancing device (8), a loading mechanism, a sample clamping fixture and a sample pull rod transmission device, the lever balancing device (8) is arranged at the top of the upper cross beam (9), and the loading mechanism is a weight loading mechanism, it includes weight peg (10), connects the weight on weight peg (10), the upper end of weight peg (10) with the rear end of lever balancing unit (8) is connected, sample centre gripping anchor clamps set up in high low temperature environment case (6), sample centre gripping anchor clamps include sample anchor clamps (14) and lower sample anchor clamps (16), go up sample anchor clamps (14) with the front end of lever balancing unit (8) is connected, sample pull rod transmission sets up the lower part of frame, the lower extreme of sample anchor clamps (16) pass through sample anchor clamps and adjust pole (17) movable from top to bottom with sample pull rod transmission connects down.
2. The high and low temperature environment endurance tensile testing machine of claim 1, wherein: four sets of the permanent tensile test mechanisms are arranged on the rack.
3. The high and low temperature environment endurance tensile testing machine of claim 1, wherein: the lower end of the weight hanging rod (10) is provided with a weight buffer (12) which is connected with the working table plate (5).
4. The high and low temperature environment endurance tensile testing machine of claim 1, wherein: sample pull rod transmission includes motor, belt drive, turbine worm speed reducer machine (4), chain drive, gear drive, the motor pass through belt drive with the input of turbine worm speed reducer machine (4) is connected, the output of turbine worm speed reducer machine (4) with chain drive connects, gear drive includes gear A (22) and gear B (28), gear A (22) set up chain drive's driven sprocket shaft is last, sample anchor clamps are adjusted pole (17) and are the lead screw structure, sample anchor clamps are adjusted pole (17) and are set up drive cover (25) screw-thread fit in the frame is connected, gear B (28) set up on drive cover (25), gear A (22) with gear B (28) mesh mutually.
5. The high and low temperature environment endurance tensile testing machine of claim 4, wherein: and the rack is provided with a rotation blocking mechanism for blocking the sample clamp adjusting rod (17) from rotating.
6. The high and low temperature environment endurance tensile testing machine of claim 5, wherein: the rotation blocking mechanism comprises a rotation blocking shaft (20) and a rotation blocking block (21), the rotation blocking shaft (20) is fixed on the rack, and the rotation blocking block (21) is fixed on the rotation blocking shaft (20) and connected with the sample clamp adjusting rod (17).
7. The high and low temperature environment endurance tensile testing machine of claim 1 or 2 or 3 or 4 or 5 or 6, wherein: each set of the lasting tensile test mechanism is provided with a sample deformation measuring device (13).
8. The high and low temperature environment endurance tensile testing machine of claim 7, wherein: the sample deformation measuring device (13) comprises a stay wire encoder (39) and two outgoing lines, one ends of the two outgoing lines are respectively connected with a sample clamping piece connected to a sample, and the other ends of the two outgoing lines are respectively connected with the stay wire encoder (39) through lead reversing wheels.
CN201922180975.8U 2019-12-09 2019-12-09 High-low temperature environment lasting tensile testing machine Active CN211061345U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201922180975.8U CN211061345U (en) 2019-12-09 2019-12-09 High-low temperature environment lasting tensile testing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201922180975.8U CN211061345U (en) 2019-12-09 2019-12-09 High-low temperature environment lasting tensile testing machine

Publications (1)

Publication Number Publication Date
CN211061345U true CN211061345U (en) 2020-07-21

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112378778A (en) * 2020-11-11 2021-02-19 常州达姆斯检测技术有限公司 High-low temperature hydraulic large-load compression test system for composite material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112378778A (en) * 2020-11-11 2021-02-19 常州达姆斯检测技术有限公司 High-low temperature hydraulic large-load compression test system for composite material

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