CN114674865A - Concrete thermal strain testing arrangement in conflagration high temperature - Google Patents
Concrete thermal strain testing arrangement in conflagration high temperature Download PDFInfo
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- CN114674865A CN114674865A CN202210242272.7A CN202210242272A CN114674865A CN 114674865 A CN114674865 A CN 114674865A CN 202210242272 A CN202210242272 A CN 202210242272A CN 114674865 A CN114674865 A CN 114674865A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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Abstract
The invention belongs to the technical field of concrete testing, and discloses a device for testing thermal strain of concrete at high temperature in a fire disaster, which comprises a testing frame; the testing assembly comprises a furnace body, an electric heating pipe, a temperature sensor, a fixed seat and a strain type sensor, wherein the furnace body, the electric heating pipe, the temperature sensor, the fixed seat and the strain type sensor are arranged in the testing frame, the fixed seat penetrates through the furnace body, the electric heating pipe and the temperature sensor are both arranged in the furnace body, and the strain type sensor is arranged on the fixed seat; according to the pushing and pressing assembly, the clamping plate can clamp the concrete sample through the matching of the structures such as the clamping plate, the supporting rod and the first spring, so that the concrete sample can be clamped and fixed, and the pushing plate can push the concrete sample to move and tightly abut against the end part of the strain sensor through the matching of the structures such as the fixing block, the screw rod, the threaded sleeve and the pushing plate, so that the concrete sample is effectively prevented from moving and displacing, the accuracy of the strain sensor in detection is ensured, and the using effect is greatly improved.
Description
Technical Field
The invention belongs to the technical field of concrete testing, and particularly relates to a device for testing thermal strain of concrete at high temperature in fire.
Background
Concrete is a general term for engineering composite materials formed by cementing aggregates into a whole by cementing materials, and the term concrete in general refers to cement concrete which is prepared by taking cement as the cementing material and sand and stone as the aggregates and mixing the aggregates with water (which can contain additives and admixtures) according to a certain proportion and stirring, and is also called common concrete, and the concrete is widely applied to civil engineering.
In order to ensure the fire resistance of a building at high temperature of a fire, the thermal strain of concrete needs to be tested, but the existing thermal strain testing device has more defects in actual use, for example, a concrete test piece is difficult to effectively fix and is tightly abutted to the end part of a sensor testing head, once the existing thermal strain testing device is subjected to thermal strain, the existing thermal strain testing device is easy to move and displace, so that the position is deviated, the detection accuracy of a sensor is greatly influenced, the impact generated when the concrete test piece bursts at high temperature is large, the whole device is easy to vibrate violently, and the safety is greatly influenced.
Disclosure of Invention
The invention aims to provide a device for testing concrete thermal strain in fire at high temperature, which aims to solve the problems that a concrete test piece is difficult to effectively fix and tightly abut against the device and is easy to vibrate violently when bursting at high temperature, which are provided by the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a concrete thermal strain testing device in fire high temperature comprises a testing frame; the testing assembly comprises a furnace body, an electric heating pipe, a temperature sensor, a fixed seat and a strain type sensor, wherein the furnace body, the electric heating pipe, the temperature sensor, the fixed seat and the strain type sensor are arranged in the testing frame, the fixed seat penetrates through the furnace body, the electric heating pipe and the temperature sensor are both arranged in the furnace body, and the strain type sensor is arranged on the fixed seat; the pushing and pressing assembly comprises a cavity groove arranged on the inner side of the furnace body, a screw rod rotatably arranged in the cavity groove, a threaded sleeve, a fixed block and a push plate, wherein the threaded sleeve is sleeved on the screw rod, one end of the screw rod is fixedly connected with the fixed block, and one end of the threaded sleeve extending into the furnace body is connected with the push plate; the clamping assembly comprises two supporting plates, clamping plates, supporting rods and a first spring, wherein the two supporting plates are symmetrically arranged in the furnace body, the clamping plates are arranged on the supporting plates, the supporting rods penetrate through the supporting plates and are fixedly connected with the clamping plates, the supporting rods are sleeved with the first spring, and the first spring is located between the supporting plates and the clamping plates.
Preferably, a shock absorbing assembly is included; damping component includes that second spring, symmetry set up spout, sliding connection in the spout of the inside both sides of test frame, slider, connecting rod and the symmetry of slider in the spout install in the third spring at slider both ends, wherein the second spring is installed between the inboard of furnace body and test frame, the one end of third spring and the inner wall fixed connection of spout, and the connecting rod articulates between slider and furnace body.
Preferably, a first connection assembly is included; first connecting element includes solid fixed ring, symmetric connection in the stopper at fixed ring lateral wall both ends and the spacing groove of symmetrically offering in fixing base tip both sides, wherein gu fixed ring installs on straining formula sensor, and spacing groove and stopper phase-match.
Preferably, a second connection assembly is included; the second connecting assembly comprises a clamping block and a clamping groove, wherein the clamping block is arranged on the screw sleeve, the clamping groove is arranged on the push plate, and the clamping block is matched with the clamping groove.
Preferably, the inner wall of the clamping groove is provided with a rubber pad, and the outer wall of the rubber pad is provided with an anti-slip groove.
Preferably, a guide rod is arranged between the sliding block and the third spring, and the guide rod is fixedly connected with the test frame.
Preferably, the sealing ring is installed on the inner side of the fixing ring, and the outer wall of the sealing ring is provided with an anti-skidding convex line.
Preferably, the limiting groove is arc-shaped, and the limiting block is T-shaped.
Preferably, the top of the test frame is provided with a handle, and the outer wall of the handle is provided with a heat insulation sleeve.
Preferably, the lateral wall of splint is installed the silica gel pad, the callus on the sole is installed to the bottom of test frame.
Compared with the prior art, the invention has the beneficial effects that:
According to the invention, the concrete test piece can be clamped and fixed by the clamping plate through the matching of structures such as the clamping plate, the supporting rod and the first spring, and the concrete test piece can be clamped and fixed by the pushing plate through the matching of structures such as the fixing block, the screw rod, the threaded sleeve and the pushing plate, so that the pushing plate can push the concrete test piece to move and tightly support the concrete test piece against the end part of the strain sensor, thereby effectively preventing the concrete test piece from moving and displacing, ensuring the accuracy of the strain sensor in detection and greatly improving the use effect;
meanwhile, the third spring is elastically deformed through the matching of structures such as the second spring, the connecting rod, the sliding block and the third spring, so that the vibration impact generated by the furnace body can be greatly reduced when the concrete test piece bursts, the furnace body is effectively prevented from shaking and shaking, and the stability and the safety of the device are greatly improved;
the fixing ring can be locked on the fixing seat through the matching of the fixing ring, the limiting block and the limiting groove, and the locking can be released through reversely rotating the fixing ring so as to be convenient for separating the fixing ring from the fixing seat, so that the quick connection and disassembly of the strain sensor can be realized, the operation is simple and quick, and the working efficiency is greatly improved;
In addition, through the cooperation of fixture block and draw-in groove, can realize the quick assembly disassembly between push pedal and the swivel nut to can in time change when the push pedal takes place to damage and maintain, further improve the result of use of device.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a top view of the support plate of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 1;
FIG. 4 is an enlarged view of portion B of FIG. 1;
in the figure: 1. a test frame; 21. a furnace body; 22. an electric heating tube; 23. a temperature sensor; 24. a fixed seat; 25. a strain gauge sensor; 31. a cavity groove; 32. a screw; 33. a threaded sleeve; 34. a fixed block; 35. pushing the plate; 41. a support plate; 42. a splint; 43. a support bar; 44. a first spring; 51. a second spring; 52. a chute; 53. a slider; 54. a connecting rod; 55. a third spring; 61. a fixing ring; 62. a limiting block; 63. a limiting groove; 71. a clamping block; 72. a clamping groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, a device for testing thermal strain of concrete in fire at high temperature comprises a test frame 1; the testing assembly comprises a furnace body 21, an electric heating tube 22, a temperature sensor 23, a fixed seat 24 and a strain sensor 25, wherein the furnace body 21, the electric heating tube 22, the temperature sensor 23, the fixed seat 24 and the strain sensor 25 are arranged in the testing frame 1, the electric heating tube 22 and the temperature sensor 23 are arranged in the furnace body 21, and the strain sensor 25 is arranged on the fixed seat 24; the pushing assembly comprises a cavity groove 31 arranged on the inner side of the furnace body 21, a screw 32 rotatably arranged in the cavity groove 31, a threaded sleeve 33, a fixed block 34 and a push plate 35, wherein the threaded sleeve 33 is sleeved on the screw 32, one end of the screw 32 is fixedly connected with the fixed block 34, and one end of the threaded sleeve 33 extending into the furnace body 21 is connected with the push plate 35; the clamping assembly comprises two supporting plates 41 symmetrically arranged in the furnace body 21, a clamping plate 42 arranged on the supporting plate 41, a supporting rod 43 and a first spring 44, wherein the supporting rod 43 penetrates through the supporting plate 41 and is fixedly connected with the clamping plate 42, the supporting rod 43 is sleeved with the first spring 44, and the first spring 44 is positioned between the supporting plate 41 and the clamping plate 42.
Through the technical scheme:
specifically, when the device is used, a concrete sample can be firstly placed in the furnace body 21, the two clamping plates 42 are pushed outwards, the clamping plates 42 drive the supporting rod 43 to move and extrude the first spring 44, then the concrete sample is placed between the two supporting plates 41, and then the two clamping plates 42 can clamp the concrete sample through the elastic action of the first spring 44, so that the concrete sample can be clamped and fixed;
Meanwhile, the fixing block 34 is rotated to drive the screw 32 to rotate, then the screw 32 drives the threaded sleeve 33 to move, and the threaded sleeve 33 drives the push plate 35 to move, so that the push plate 35 can push the concrete test piece to move, the concrete test piece can be tightly abutted against the end part of the strain sensor 25, the concrete test piece is effectively prevented from moving and displacing, the accuracy of the strain sensor 25 in detection is ensured, and the using effect is greatly improved;
in addition, the electric heating tube 22 can heat the interior of the furnace body 21 to raise the temperature during operation, and the temperature sensor 23 can be used for detecting the interior temperature of the furnace body 21, so that a fire high-temperature environment can be simulated quickly, and the thermal strain performance of concrete can be detected.
Referring to fig. 1, a shock absorbing assembly is included; damper includes second spring 51, symmetry set up spout 52, sliding connection in spout 52 of the inside both sides of test frame 1 in slide block 53, connecting rod 54 and the symmetry install in the third spring 55 at slider 53 both ends, and wherein second spring 51 installs between the inboard of furnace body 21 and test frame 1, the one end of third spring 55 and the inner wall fixed connection of spout 52, and connecting rod 54 articulates between slider 53 and furnace body 21.
Through the technical scheme:
specifically, when the concrete test piece takes place to burst, furnace body 21 can be with second spring 51 effect, make second spring 51 take place elastic deformation, and furnace body 21 can drive the motion of connecting rod 54, make connecting rod 54 drive slider 53 slide in spout 52, then slider 53 and third spring 55 effect, make third spring 55 take place elastic deformation, under the cushioning effect of this structure, the vibration impact that can reduce furnace body 21 production greatly, thereby effectually prevented that furnace body 21 from taking place the vibrations and rocking, the stability and the security of device have been improved greatly.
Referring to fig. 1 and 4, a first connection assembly is included; first coupling assembly includes solid fixed ring 61, symmetrical connection in the stopper 62 at solid fixed ring 61 lateral wall both ends and the spacing groove 63 of symmetrical seting up in fixing base 24 tip both sides, and wherein solid fixed ring 61 is installed on strain sensor 25, and spacing groove 63 and stopper 62 phase-match.
Through the technical scheme:
specifically, during the use, through aim at fixing base 24 with solid fixed ring 61, and make stopper 62 insert the spacing groove 63 that corresponds in, then rotate solid fixed ring 61, make stopper 62 slide in spacing groove 63, thereby can lock solid fixed ring 61 on fixing base 24, and the solid fixed ring 61 of antiport, can relieve the locking, so that solid fixed ring 61 and fixing base 24 of separation, and then can realize straining sensor 25's high-speed joint and dismantlement, easy operation is swift, and the work efficiency is greatly improved.
Referring to fig. 1 and 3, a second connection assembly is included; the second connecting assembly comprises a clamping block 71 and a clamping groove 72, wherein the clamping block 71 is arranged on the threaded sleeve 33, the clamping groove 72 is formed in the push plate 35, and the clamping block 71 is matched with the clamping groove 72.
Through the technical scheme:
specifically, through the mutual grafting cooperation of fixture block 71 and draw-in groove 72, can realize the quick assembly disassembly between push pedal 35 and swivel nut 33 to when push pedal 35 takes place to damage, can in time change and maintain, further improved the result of use of device.
Referring to fig. 1-4, the rubber pad is installed to the inner wall of draw-in groove 72, and the outer wall of rubber pad has seted up anti-skidding groove, be provided with the guide arm between slider 53 and the third spring 55, and guide arm and test frame 1 fixed connection, the sealing washer is installed to solid fixed ring 61's inboard, and the outer wall of sealing washer is provided with the anti-skidding burr, spacing groove 63 is the arc, stopper 62 is the T type, the handle is installed at the top of test frame 1, and the outer wall of handle is provided with the radiation shield, the silica gel pad is installed to the lateral wall of splint 42, the callus on the sole is installed to the bottom of test frame 1.
Through the technical scheme:
specifically, the rubber pad has a reinforcing effect, so that the fixture block 71 can be better fastened in the fixture groove 72, and the slider 53 and the third spring 55 can be supported and limited by the guide rod, so that the structural stability is further enhanced;
Can prevent through the sealing washer that the heat in the furnace body 21 runs off, and can carry the removal to the device through the handle, the callus on the sole has skid-proof effect, can improve the stability when device is placed greatly.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a concrete thermal strain testing arrangement in conflagration high temperature which characterized in that includes:
a test frame (1);
the testing assembly comprises a furnace body (21) arranged in the testing frame (1), an electric heating tube (22), a temperature sensor (23), a fixing seat (24) penetrating through the furnace body (21) and a strain sensor (25), wherein the electric heating tube (22) and the temperature sensor (23) are both arranged in the furnace body (21), and the strain sensor (25) is arranged on the fixing seat (24);
the pushing assembly comprises a cavity groove (31) formed in the inner side of the furnace body (21), a screw rod (32) rotatably installed in the cavity groove (31), a threaded sleeve (33), a fixing block (34) and a pushing plate (35), wherein the threaded sleeve (33) is sleeved on the screw rod (32), one end of the screw rod (32) is fixedly connected with the fixing block (34), and one end, extending to the interior of the furnace body (21), of the threaded sleeve (33) is connected with the pushing plate (35);
the clamping assembly comprises two supporting plates (41) symmetrically arranged in the furnace body (21), clamping plates (42) arranged on the supporting plates (41), supporting rods (43) and first springs (44), wherein the supporting rods (43) penetrate through the supporting plates (41) and are fixedly connected with the clamping plates (42), the supporting rods (43) are sleeved with the first springs (44), and the first springs (44) are located between the supporting plates (41) and the clamping plates (42).
2. The device for testing the thermal strain of the concrete in the high temperature of the fire according to claim 1, which is characterized in that: comprises a shock absorption component;
the damping assembly comprises a second spring (51), sliding grooves (52) symmetrically formed in two sides of the interior of the test frame (1), a sliding block (53) connected in the sliding grooves (52), a connecting rod (54) and third springs (55) symmetrically installed at two ends of the sliding block (53), wherein the second spring (51) is installed between the inner sides of the furnace body (21) and the test frame (1), one end of each third spring (55) is fixedly connected with the inner wall of each sliding groove (52), and each connecting rod (54) is hinged between the corresponding sliding block (53) and the corresponding furnace body (21).
3. The device for testing the thermal strain of the concrete in the high temperature of the fire according to claim 2, characterized in that: comprises a first connecting component;
first coupling assembling includes solid fixed ring (61), symmetric connection in solid fixed ring (61) lateral wall both ends stopper (62) and the symmetry set up in spacing groove (63) of fixing base (24) tip both sides, wherein gu fixed ring (61) install on strain sensor (25), and spacing groove (63) and stopper (62) phase-match.
4. The device for testing the thermal strain of the concrete in the high temperature of the fire according to claim 3, characterized in that: comprises a second connecting component;
The second connecting assembly comprises a clamping block (71) and a clamping groove (72), wherein the clamping block (71) is installed on the threaded sleeve (33), the clamping groove (72) is formed in the push plate (35), and the clamping block (71) is matched with the clamping groove (72).
5. The device for testing the thermal strain of the concrete in the high temperature of the fire according to claim 4, characterized in that: the rubber pad is installed to the inner wall of draw-in groove (72), and the outer wall of rubber pad has seted up anti-skidding groove.
6. The device for testing the thermal strain of the concrete in the high temperature of the fire according to claim 5, characterized in that: and a guide rod is arranged between the sliding block (53) and the third spring (55), and the guide rod is fixedly connected with the test frame (1).
7. The device for testing the thermal strain of the concrete in the high temperature of the fire according to claim 6, characterized in that: the sealing ring is installed to the inboard of solid fixed ring (61), and the outer wall of sealing ring is provided with the antiskid burr.
8. The device for testing the thermal strain of the concrete in the high temperature of the fire according to claim 7, wherein: the limiting groove (63) is arc-shaped, and the limiting block (62) is T-shaped.
9. The device for testing the thermal strain of the concrete in the high temperature of the fire according to claim 8, characterized in that: the handle is installed at the top of test frame (1), and the outer wall of handle is provided with the radiation shield sleeve.
10. The device for testing the thermal strain of the concrete in the high temperature of the fire disaster according to claim 9, characterized in that: the silica gel pad is installed to the lateral wall of splint (42), the callus on the sole is installed to the bottom of test frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210242272.7A CN114674865A (en) | 2022-03-11 | 2022-03-11 | Concrete thermal strain testing arrangement in conflagration high temperature |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210242272.7A CN114674865A (en) | 2022-03-11 | 2022-03-11 | Concrete thermal strain testing arrangement in conflagration high temperature |
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| CN114674865A true CN114674865A (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210242272.7A Pending CN114674865A (en) | 2022-03-11 | 2022-03-11 | Concrete thermal strain testing arrangement in conflagration high temperature |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117030778A (en) * | 2023-10-10 | 2023-11-10 | 佳木斯大学 | Oral cavity composite resin material temperature strain detection device |
-
2022
- 2022-03-11 CN CN202210242272.7A patent/CN114674865A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117030778A (en) * | 2023-10-10 | 2023-11-10 | 佳木斯大学 | Oral cavity composite resin material temperature strain detection device |
| CN117030778B (en) * | 2023-10-10 | 2024-02-13 | 佳木斯大学 | Oral cavity composite resin material temperature strain detection device |
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