Semi-flexible pavement anti-cracking performance detection device

Abstract

The invention provides a semi-flexible pavement crack resistance detection device, and relates to the technical field of road performance detection equipment. The semi-flexible pavement anti-cracking performance detection device comprises a machine body, a pressure measuring assembly, a tension measuring assembly and a temperature control assembly, the machine body is provided with a workbench and a switch door. The opening and closing door is located above the workbench; the pressure measuring assembly comprises a hydraulic cylinder, an output shaft, a pressure sensor, a pressure piece and a supporting assembly. The tension measuring assembly comprises a connecting plate, a first mounting piece, a second mounting piece and a tension measuring piece; an air outlet is formed in the machine body, the temperature control assembly is arranged in the machine body and located below the workbench, and the output end of the temperature control assembly is connected with the air outlet. The device for detecting the crack resistance of the semi-flexible pavement solves the technical problem that an existing device for detecting the semi-flexible pavement is relatively tedious in measurement and analysis of the crack resistance of the semi-flexible pavement influenced by multiple factors.

Description

Technical Field

[0001] The invention relates to the technical field of road performance testing equipment, and in particular to a semi-flexible road surface anti-cracking performance testing device. Background Art

[0002] Semi-flexible pavement is a new type of pavement structure that combines the characteristics of concrete and asphalt pavements. It mainly uses materials such as cement mortar, resin and asphalt, which can form a hard and flexible pavement after solidification and hardening.

[0003] Cracks in semi-flexible pavement are one of the common diseases in road use, which affects the flatness and aesthetics of the road and easily poses a threat to driving safety. Cracks may cause bumps and slips in vehicle driving, and even cause traffic accidents. Therefore, it is necessary to test the crack resistance of semi-flexible pavement and adjust the ratio of various raw materials according to the test results to improve the crack resistance of semi-flexible pavement.

[0004] The existing semi-flexible pavement crack resistance detection device places a small beam specimen of the semi-flexible pavement material on a workbench and performs creep bending on the small beam specimen through a hydraulic element to perform crack resistance analysis on the semi-flexible pavement. However, the crack resistance of the semi-flexible pavement will also be affected by factors such as temperature and tension. The existing semi-flexible pavement crack resistance detection device can only perform crack resistance measurement and analysis on a single factor. It is relatively cumbersome to measure and analyze the crack resistance of the semi-flexible pavement affected by multiple factors. Therefore, it is necessary to study a semi-flexible pavement crack resistance detection device to meet the diverse needs of customers.

[0005] The inventors have found at least the following problems in the process of implementing this embodiment:

[0006] The existing semi-flexible pavement detection device is relatively cumbersome in measuring and analyzing the multi-factor impact on the crack resistance of the semi-flexible pavement. Summary of the invention

[0007] The purpose of the present invention is to provide a semi-flexible pavement anti-cracking performance detection device, which solves the technical problem that the existing semi-flexible pavement detection device has complicated measurement and analysis of the anti-cracking performance of the semi-flexible pavement affected by multiple factors.

[0008] Invention scheme:

[0009] The present invention provides a semi-flexible pavement anti-cracking performance detection device, comprising a body, a pressure measuring assembly, a tension measuring assembly and a temperature control assembly; the body is provided with a workbench and a switch door; the switch door is located above the workbench; the pressure measuring assembly comprises a hydraulic cylinder, an output shaft, a pressure sensor, a pressure piece and a support assembly; the hydraulic cylinder is fixedly installed on the top of the body, the output shaft is connected to the hydraulic cylinder, the pressure sensor is connected to the output shaft, the pressure piece is connected to the pressure sensor, and the support assembly is arranged on the workbench and is located below the pressure piece; the tension measuring assembly comprises a connecting plate, a first mounting piece, a second mounting piece and a tension measuring piece; the connecting plate is fixedly connected to the output shaft, the first mounting piece is fixedly installed on the connecting plate, the tension measuring piece is fixedly connected to the body, and the second mounting piece is fixedly connected to the tension measuring piece; an air outlet is provided in the body, the temperature control assembly is arranged inside the body and is located below the workbench, and the output end of the temperature control assembly is connected to the air outlet.

[0010] Furthermore, the support assembly includes a first support plate and a support protrusion, the first support plate is arranged on the workbench, and the support protrusion is fixedly connected to the first support plate.

[0011] Furthermore, the support assembly includes a second support plate, a support column and a pressure plate; the second support plate is arranged on the workbench, the support column is fixedly connected to the second support plate, and the support column passes through the pressure plate.

[0012] Furthermore, the machine body is provided with a limiting groove, and the connecting plate is adapted to the limiting groove.

[0013] Furthermore, the first mounting member is provided with a first threaded hole, the second mounting member is provided with a second threaded hole, and bolts are respectively installed in the first threaded hole and the second threaded hole.

[0014] Furthermore, the machine body is installed with an ultrasonic detection device; the ultrasonic detection device includes a sound source generator, a sound sensor, a signal amplifier and an acoustic emission detector; the sound source generator is used to be installed on a measurement workpiece; the sound sensor is used to be installed on a measurement workpiece; the signal amplifier and the acoustic emission detector are respectively installed on the outer wall of the machine body; the acoustic sensor is connected to the signal amplifier, and the signal amplifier is connected to the acoustic emission detector.

[0015] Furthermore, a temperature control device installation opening is provided inside the machine body, and the temperature control device installation opening is located at the rear side of the machine body.

[0016] Furthermore, the switch door is provided with a window.

[0017] Furthermore, the connecting plate is installed with an electronic temperature detector.

[0018] Beneficial effects: The present invention provides a semi-flexible pavement crack resistance performance detection device. When in use, the temperature inside the body is adjusted by the temperature control component, the switch door is opened, the pressure measurement workpiece is placed above the support component, the hydraulic cylinder drives the output shaft to move downward, the output shaft drives the pressure piece to move downward, the pressure piece presses the measurement workpiece downward, and the pressure sensor transmits the dynamic pressure data of the measurement workpiece, which can realize the measurement and analysis of the crack resistance of the measurement workpiece under the comprehensive influence of temperature and pressure; the temperature inside the body is adjusted by the temperature control component, the switch door is opened, one end of the tension measurement workpiece is fixed to the first mounting part, and the other end is fixed to the second mounting part, the hydraulic cylinder drives the output shaft to move downward, the output shaft drives the connecting plate to move downward, and the tension sensor transmits the dynamic tension data of the measurement workpiece, which can realize the measurement and analysis of the crack resistance of the measurement workpiece under the comprehensive influence of temperature and tension. This semi-flexible pavement crack resistance performance detection device is easier to measure and analyze the crack resistance of the semi-flexible pavement affected by multiple factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the structure of a semi-flexible pavement anti-cracking performance detection device provided in this embodiment;

[0021] Figure 2 A schematic diagram of the structure of a device for detecting the crack resistance of a semi-flexible pavement provided in this embodiment;

[0022] Figure 3 A schematic diagram of the structure of a device for detecting the crack resistance of a semi-flexible pavement provided in this embodiment;

[0023] Figure 4 A schematic diagram of the structure of a portion of the semi-flexible pavement anti-cracking performance detection device provided in this embodiment.

[0024] icon:

[0025] 100-machine body; 110-workbench; 120-door; 121-window; 130-air outlet; 140-limiting slot; 150-temperature control device installation port; 160-electronic temperature detector;

[0026] 200-pressure measuring assembly; 210-hydraulic cylinder; 220-output shaft; 230-pressure sensor; 240-pressure member; 250-support assembly; 251-first support plate; 252-support protrusion; 253-second support plate; 254-support column; 255-pressure plate;

[0027] 300-tensile measuring assembly; 310-connecting plate; 320-first mounting member; 330-second mounting member; 340-tensile measuring member; 350-first threaded hole; 360-second threaded hole; 370-bolt;

[0028] 400-temperature control component;

[0029] 500 - ultrasonic detection device; 510 - sound source generating element; 520 - sound sensor; 530 - signal amplifier; 540 - acoustic emission detector. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0034] In addition, the terms "horizontal" and "vertical" do not mean that the components must be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0035] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0037] This embodiment provides a semi-flexible pavement anti-cracking performance detection device, please refer to Figure 1-4 As shown, it includes a body 100, a pressure measuring assembly 200, a tension measuring assembly 300 and a temperature control assembly 400; the body 100 is provided with a workbench 110 and a switch door 120; the switch door 120 is located above the workbench 110; the pressure measuring assembly 200 includes a hydraulic cylinder 210, an output shaft 220, a pressure sensor 230, a pressure piece 240 and a support assembly 250; the hydraulic cylinder 210 is fixedly installed on the top of the body 100, the output shaft 220 is connected to the hydraulic cylinder 210, the pressure sensor 230 is connected to the output shaft 220, the pressure piece 240 is connected to the pressure sensor 230, and the support assembly 250 is arranged on the workbench 110, and it is located below the pressure piece 240; the tension measuring assembly 300 includes a connecting plate 310, a first mounting piece 320, a second mounting piece 330 and a tension measuring piece 340; the connecting plate 310 is fixedly connected to the output shaft 220, the first mounting piece 320 is fixedly installed on the connecting plate 310, the tension measuring piece 340 is fixedly connected to the body 100, and the second mounting piece 330 is fixedly connected to the tension measuring piece 340; an air outlet 130 is provided in the body 100, and the temperature control assembly 400 is arranged inside the body 100 and is located below the workbench 110, and the output end of the temperature control assembly 400 is connected to the air outlet 130.

[0038] Specifically, the body 100 is welded with steel, the workbench 110 is used to support the pressure measuring workpiece, which is convenient for the pressure measuring work to do pressure bearing experiments (low-temperature bending test, low-temperature splitting test and low-temperature creep test), the air outlet 130 and the temperature control component 400 are used to adjust the temperature inside the body 100, and the switch door 120 is used to open or close the body 100; the pressure measuring component 200 is used to measure the pressure bearing capacity of the pressure measuring workpiece, the hydraulic cylinder 210, the output shaft 220 and the pressure piece 240 are used to provide pressure, and the support component 250 is used to fix the pressure measuring workpiece to the workbench 110; the tensile measuring component 300 is used to measure the tensile bearing capacity of the tensile measuring workpiece, the first mounting member 320, the second mounting member 330 and the tensile measuring member 340 are respectively provided with two, the connecting plate 310 is used to limit the position of the first mounting member 320, and the tensile measuring member 340 is used to measure the tensile force borne by the tensile measuring workpiece. When in use, the temperature inside the body 100 is adjusted by the temperature control component 400, the switch door 120 is opened, the pressure measurement workpiece is placed above the support component 250, the hydraulic cylinder 210 drives the output shaft 220 to move downward, the output shaft 220 drives the pressure piece 240 to move downward, the pressure piece 240 presses the measurement workpiece, and the pressure sensor 230 transmits the dynamic pressure data of the measurement workpiece, which can realize the measurement and analysis of the crack resistance of the measurement workpiece under the comprehensive influence of temperature and pressure; the temperature inside the body 100 is adjusted by the temperature control component 400, the switch door 120 is opened, one end of the tension measurement workpiece is fixed to the first mounting member 320, and the other end thereof is fixed to the second mounting member 330, the hydraulic cylinder 210 drives the output shaft 220 to move downward, the output shaft 220 drives the connecting plate 310 to move downward, and the tension sensor transmits the dynamic tension data of the measurement workpiece, which can realize the measurement and analysis of the crack resistance of the measurement workpiece under the comprehensive influence of temperature and tension.

[0039] In this embodiment, the support assembly 250 includes a first support plate 251 and a support protrusion 252 . The first support plate 251 is disposed on the workbench 110 , and the support protrusion 252 is fixedly connected to the first support plate 251 .

[0040] Specifically, when it is necessary to perform bending measurement on the pressure measuring workpiece, the pressure measuring workpiece is placed on the supporting protrusion 252, and the pressure member 240 applies pressure to the middle of the pressure measuring workpiece.

[0041] In this embodiment, the support assembly 250 includes a second support plate 253 , a support column 254 and a pressure plate 255 ; the second support plate 253 is disposed on the workbench 110 , the support column 254 is fixedly connected to the second support plate 253 , and the support column 254 is passed through the pressure plate 255 .

[0042] Specifically, when a low-temperature splitting test is required for the pressure measuring workpiece, the pressure measuring workpiece is placed on the second support plate 253 , the pressure plate 255 is inserted into the support column 254 , and the pressure member 240 applies pressure to the pressure plate 255 .

[0043] In this embodiment, the body 100 is provided with a limiting groove 140 , and the connecting plate 310 is adapted to the limiting groove 140 .

[0044] Specifically, the limiting groove 140 is provided to limit the running track of the connecting plate 310 to ensure the smooth running of the connecting plate 310 .

[0045] In this embodiment, the first mounting member 320 is provided with a first threaded hole 350 , and the second mounting member 330 is provided with a second threaded hole 360 ​​. Bolts 370 are installed in the first threaded hole 350 and the second threaded hole 360 ​​, respectively.

[0046] Specifically, the bolt 370 is screwed into the first threaded hole 350 and the second threaded hole 360 ​​to squeeze the tensile test workpiece, and the connecting plate 310 drives the first mounting member 320 to move downward, thereby performing a tensile test on the tensile test workpiece.

[0047] In this embodiment, the body 100 is installed with an ultrasonic detection device 500; the ultrasonic detection device 500 includes a sound source generating component 510, a sound sensor 520, a signal amplifier 530 and an acoustic emission detector 540; the sound source generating component 510 is used to be installed on the measuring workpiece; the sound sensor 520 is used to be installed on the measuring workpiece; the signal amplifier 530 and the acoustic emission detector 540 are respectively installed on the outer wall of the body 100; the acoustic sensor 520 is connected to the signal amplifier 530, and the signal amplifier 530 is connected to the acoustic emission detector 540.

[0048] Specifically, the ultrasonic detection device 500 performs non-destructive testing on the pressure test workpiece, the sound source generating element 510 is used to emit vibration, the sound emission sensor 520 is used to receive the vibration and generate a pulse voltage signal, which is amplified by the signal amplifier 530 and transmitted to the acoustic emission detector 540.

[0049] In this embodiment, a temperature control device installation opening 150 is provided inside the body 100 , and the temperature control device installation opening 150 is located at the rear side of the body 100 .

[0050] Specifically, the temperature control device installation port 150 is located at the rear side of the machine body 100 so that the front operation is not affected.

[0051] In this embodiment, the switch door 120 is provided with a window 121 .

[0052] Specifically, the window 121 is provided to facilitate observation of the experimental status of the workpiece in the machine body 100 .

[0053] In this embodiment, the connecting plate 310 is installed with an electronic temperature detector 160 .

[0054] Specifically, the electronic temperature detector 160 is disposed on the side of the connecting plate 310 and is not easily damaged, and corresponds to the window 121 , so as to facilitate observation of the temperature inside the body 100 .

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A semi-flexible pavement crack resistance detection device, characterized in that: It comprises a machine body (100), a pressure measuring assembly (200), a tension measuring assembly (300) and a temperature control assembly (400); The machine body (100) is provided with a workbench (110) and a switch door (120); The switch door (120) is located above the workbench (110); The pressure measuring assembly (200) comprises a hydraulic cylinder (210), an output shaft (220), a pressure sensor (230), a pressure member (240) and a support assembly (250); The hydraulic cylinder (210) is fixedly mounted on the top of the machine body (100), the output shaft (220) is connected to the hydraulic cylinder (210), the pressure sensor (230) is connected to the output shaft (220), the pressure piece (240) is connected to the pressure sensor (230), and the support assembly (250) is arranged on the workbench (110) and is located below the pressure piece (240); The tension measuring assembly (300) comprises a connecting plate (310), a first mounting member (320), a second mounting member (330) and a tension measuring member (340); The connecting plate (310) is fixedly connected to the output shaft (220), the first mounting member (320) is fixedly mounted on the connecting plate (310), the tension measuring member (340) is fixedly connected to the machine body (100), and the second mounting member (330) is fixedly connected to the tension measuring member (340); An air outlet (130) is provided in the machine body (100), the temperature control component (400) is arranged inside the machine body (100) and is located below the workbench (110), and the output end of the temperature control component (400) is connected to the air outlet (130).

2. A semi-flexible pavement anti-cracking performance detection device according to claim 1, characterized in that: The support assembly (250) comprises a first support plate (251) and a support protrusion (252); the first support plate (251) is arranged on the workbench (110); and the support protrusion (252) is fixedly connected to the first support plate (251).

3. A semi-flexible pavement anti-cracking performance detection device according to claim 1, characterized in that: The support assembly (250) comprises a second support plate (253), a support column (254) and a pressure plate (255); The second support plate (253) is arranged on the workbench (110), the support column (254) is fixedly connected to the second support plate (253), and the support column (254) is passed through the pressure plate (255).

4. A semi-flexible pavement anti-cracking performance detection device according to any one of claims 1 to 3, characterized in that: The machine body (100) is provided with a limiting groove (140), and the connecting plate (310) is adapted to fit the limiting groove (140).

5. A semi-flexible pavement anti-cracking performance detection device according to claim 4, characterized in that: The first mounting member (320) is provided with a first threaded hole (350), the second mounting member (330) is provided with a second threaded hole (360), and the first threaded hole (350) and the second threaded hole (360) are respectively installed with bolts (370).

6. A semi-flexible pavement anti-cracking performance detection device according to claim 5, characterized in that: The machine body (100) is equipped with an ultrasonic detection device (500); the ultrasonic detection device (500) comprises a sound source generating element (510), a sound emission sensor (520), a signal amplifier (530) and an acoustic emission detector (540); The sound source generating member (510) is used to be installed on a measurement workpiece; The acoustic sensor (520) is used to be installed on a measurement workpiece; The signal amplifier (530) and the acoustic emission detector (540) are respectively installed on the outer wall of the body (100); The acoustic emission sensor (520) is connected to the signal amplifier (530), and the signal amplifier (530) is connected to the acoustic emission detector (540).

7. A semi-flexible pavement anti-cracking performance detection device according to claim 6, characterized in that: A temperature control device installation opening (150) is provided inside the machine body (100), and the temperature control device installation opening (150) is located at the rear side of the machine body (100).

8. A semi-flexible pavement anti-cracking performance detection device according to claim 7, characterized in that: The opening and closing door (120) is provided with a window (121).

9. A semi-flexible pavement anti-cracking performance detection device according to claim 8, characterized in that: The connecting plate (310) is installed with an electronic temperature detector (160).

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