Road material strength tester

Abstract

The utility model discloses a road material strength tester. A sample carrier plate is arranged on a lower base and is connected to the output end of a linear driver. The linear driver drives the sample carrier plate to reciprocate in the length direction of the lower base; the plurality of sample seats are arranged at intervals in the length direction of the sample carrying plate and are used for supporting samples to be tested, and different sample seats can be transferred to the position under the hydraulic cylinder by driving the sample carrying plate in the length direction; according to the road material strength tester provided by the utility model, the temperature and humidity in the sample cavity can be monitored by the thermometer and the hygrometer on the environment bin box, the humidity in the sample cavity can be increased by the spraying head on the environment bin box, and the temperature in the sample cavity can be increased by the working of the heating component on the environment bin box; when the working temperature reaches the set temperature, the sample seat of the corresponding environment bin assembly is transferred to the position under the hydraulic cylinder through the work of the linear driver, and then the test is completed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of road material testing, especially relates to a road material strength tester. BACKGROUND

[0002] The road material strength tester is a kind of instrument for measuring the strength of road material (asphalt, concrete, etc.). This device is usually used in the field of road engineering and building material testing to ensure that the quality and durability of road materials meet the engineering requirements. The working principle of the road material strength tester is to apply a certain force or pressure to the road material sample, and then measure the deformation or damage of the material under stress. Through these data, the compressive strength, tensile strength, bending strength and other key performance indicators of the material can be calculated.

[0003] These test results are crucial for evaluating the performance of road materials, predicting the service life of roads and guiding the maintenance and repair work of roads. The use of road material strength tester helps to ensure the quality of road construction, reduce future maintenance costs and improve the safety and reliability of roads. The testing process of the material not only includes mechanical testing, but also should consider environmental conditions (mainly temperature and humidity). It is difficult to realize environmental control with the current testing instrument, and the structure is complex. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a road material strength tester, which aims to solve the problem that the testing process of the material not only includes mechanical testing, but also should consider environmental conditions, and it is difficult to realize environmental control with the current testing instrument, and the structure is complex.

[0005] In order to achieve the above purpose, the utility model provides a road material strength tester, which comprises:

[0006] The lower base is used as the structural foundation.

[0007] The upper base is supported on the lower base.

[0008] The hydraulic cylinder is installed on the upper base and the output end is set below.

[0009] The linear driver is installed on the lower base.

[0010] The sample carrier plate is set on the lower base and connected to the output end of the linear driver, and the linear driver drives the sample carrier plate to reciprocate in the length direction of the lower base.

[0011] A plurality of sample seats are arranged at intervals in the length direction of the sample carrier plate.

[0012] A plurality of environmental chamber assemblies, the environmental chamber assembly comprises an environmental chamber box arranged corresponding to the sample seat, the environmental chamber box is detachably combined with the sample seat and forms a sample cavity for accommodating a sample to be tested with the upper surface of the sample seat, the environmental chamber box is provided with a sealing portion corresponding to the output end of the hydraulic cylinder at the top, the environmental chamber box is provided with a thermometer, a humidity meter and a spray head penetrating into the sample cavity, and the environmental chamber box is further provided with a heating component, wherein when the hydraulic cylinder is driven downward, the output end of the hydraulic cylinder penetrates through the sealing portion and then reaches the sample cavity.

[0013] Further, the sample carrier plate comprises a plurality of structural segments and a plurality of heat insulation segments in length, the plurality of structural segments correspond to support the plurality of sample seats respectively, and the heat insulation segment is connected between two adjacent structural segments.

[0014] Further, the structural segment and the heat insulation segment are in a clamping structure in the length direction.

[0015] Further, a cleaning brush is arranged on the sample carrier plate parallel to the sample seat.

[0016] Further, the types of the plurality of sample seats at least include a block integral type for performing compression strength test and a split support type for performing fracture strength.

[0017] Further, the environmental chamber box is further provided with a cooling component.

[0018] Further, a test pressure head is detachably arranged corresponding to the output end of the hydraulic cylinder.

[0019] Further, the sample carrier plate and the lower base are formed with a guide matching structure in the length direction.

[0020] Further, the sample seat is detachably arranged on the sample carrier plate.

[0021] Further, the linear driver is a linear motor type or a screw rod driving type.

[0022] The road material strength tester provided by the utility model, the sample carrier plate is arranged on the lower base and connected to the output end of the linear driver. The linear driver drives the sample carrier plate to reciprocate in the length direction of the lower base; a plurality of sample seats are arranged at intervals in the length direction of the sample carrier plate for supporting the sample to be tested, and different sample seats can be transferred to the position directly below the hydraulic cylinder by driving the sample carrier plate in the length direction; the thermometer and the hygrometer on the environmental box can monitor the temperature and humidity in the sample cavity, the spray head on the environmental box can increase the humidity in the sample cavity, the heating component on the environmental box can increase the temperature in the sample cavity, and when the working temperature reaches the setting, the sample seat corresponding to the environmental box assembly is transferred to the position directly below the hydraulic cylinder by the working of the linear driver, and the test is completed. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 Figure 1 is the installation schematic diagram of the hydraulic cylinder in the road material strength tester of the first embodiment of the utility model;

[0024] Figure 2 Figure 2 is the schematic diagram of the sample carrier plate in the road material strength tester of the first embodiment of the utility model (remove the environmental box assembly);

[0025] Figure 3 Figure 3 is the schematic diagram of the sample carrier plate in the road material strength tester of the first embodiment of the utility model (first view angle);

[0026] Figure 4 Figure 4 is the schematic diagram of the sample carrier plate in the road material strength tester of the first embodiment of the utility model (second view angle);

[0027] Figure 5 Figure 5 is the schematic diagram of the road material strength tester of the first embodiment of the utility model (first working position and the hydraulic cylinder is in the upper position);

[0028] Figure 6 Figure 6 is the schematic diagram of the road material strength tester of the first embodiment of the utility model (first working position and the hydraulic cylinder is in the lower position);

[0029] Figure 7 Figure 7 is the schematic diagram of the road material strength tester of the first embodiment of the utility model (second working position and the hydraulic cylinder is in the lower position);

[0030] Figure 8 Figure 8 is the schematic diagram of the sample carrier plate in the road material strength tester of the second embodiment of the utility model (remove the environmental box assembly).

[0031] The utility model is realized, the function characteristics and the advantages will be further explained by combining with the embodiment and referring to the drawings. Detailed Implementation

[0032] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0033] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” “the,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, units, modules, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connection or wireless coupling. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

[0034] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0035] Reference Figures 1 to 8 In one embodiment of this utility model, a road material strength tester includes:

[0036] The lower base is 100mm, serving as the structural foundation;

[0037] The upper base 200 is supported on the lower base 100;

[0038] A hydraulic cylinder 300 is mounted on the upper base 200 with its output end located below.

[0039] A linear actuator 400 is mounted on the lower base 100;

[0040] The sample carrier plate 500 is disposed on the lower base 100 and connected to the output end of the linear driver 400. The linear driver 400 drives the sample carrier plate 500 to reciprocate in the length direction of the lower base 100.

[0041] A plurality of sample seats 600 are arranged at intervals in the length direction of the sample carrier plate 500.

[0042] A plurality of environmental chamber assemblies 700 are arranged corresponding to the sample seats 600, and the environmental chamber box 710 arranged corresponding to the sample seats 600 is detachably combined with the sample seats 600 and forms a sample cavity for accommodating a sample to be tested with the upper surface of the sample seat 600, the environmental chamber box 710 is provided with a sealing portion 720 corresponding to the output end of the hydraulic cylinder 300 at the top, the environmental chamber box 710 is provided with a thermometer 730, a humidity meter 740 and a spray head 750 penetrating into the sample cavity, and the environmental chamber box 710 is also provided with a heating component 760, wherein when the hydraulic cylinder 300 is driven downward, the output end of the hydraulic cylinder 300 penetrates through the sealing portion 720 and then reaches the sample cavity.

[0043] In the prior art, the test process of the material not only includes mechanical test, but also should consider environmental conditions (mainly temperature and humidity), and it is difficult to realize environmental control by the current test instrument, and the structure is complex.

[0044] The road material strength tester provided by the utility model has the advantages that the lower base 100 serves as a structural foundation, the weight and area of the lower base 100 are required to be large, so that the upper components can be stably supported.

[0045] The upper base 200 is supported on the lower base 100, and the upper base 200 is used for supporting the subsequent hydraulic cylinder 300, and the stable support of the upper base 200 determines the stability of work and the accuracy of test results.

[0046] The hydraulic cylinder 300 is installed on the upper base 200 and the output end is arranged below, and the work of the hydraulic cylinder 300 provides power for the test.

[0047] The linear driver 400 is installed on the lower base 100, and the linear driver 400 can be in various forms, such as a linear motor, a pneumatic cylinder and a hydraulic rod, and the movement of the subsequent sample carrier plate 500 is completed through the linear driver.

[0048] The sample carrier plate 500 is arranged on the lower base 100 and connected to the output end of the linear driver 400, the linear driver 400 drives the sample carrier plate 500 to reciprocate in the length direction of the lower base 100, and the movement of the sample carrier plate 500 on the lower base 100 can be arranged to match the sliding position, so that the position of the sample carrier plate 500 can be more accurate.

[0049] A plurality of sample seats 600 are arranged at intervals in the length direction of the sample carrier 500. The sample seats 600 are used to support the samples to be tested. In view of the fact that the most important material testing items are compressive strength and breaking strength, the types of the sample seats 600 are diversified, so that diversified performance tests can be completed. For example, the sample seat 600 for performing compressive strength test is a whole piece (e.g. cuboid shape) which can stably support the sample, so that when the output end of the hydraulic cylinder 300 is pressed down, the compressive strength test process can be realized. The sample seat 600 for performing breaking strength test should be a body support type (including two support seats), and the two ends of the sample are supported on the two support seats respectively, so that when the output end of the hydraulic cylinder 300 is pressed down, the breaking strength test process can be realized. By driving the sample carrier 500 in the length direction, the different sample seats 600 can be transferred to the right below the hydraulic cylinder 300, and the test can be completed.

[0050] A plurality of environmental chamber assemblies 700 are arranged corresponding to the plurality of sample seats 600 respectively. The environmental chamber assembly 700 includes an environmental chamber box 710 arranged corresponding to the sample seat 600. The environmental chamber box 710 can be detachably combined with the sample seat 600 and forms a sample cavity with the upper surface of the sample seat 600 for accommodating the sample to be tested. The top of the environmental chamber box 710 is provided with a sealing part 720 corresponding to the output end of the hydraulic cylinder 300. The sealing part 720 can have various forms, for example, the sealing part 720 includes two pieces of rubber cover which cooperate with each other, so that the sealing effect can be realized while the output end of the hydraulic cylinder 300 can pass through; or the structure of the sealing part 720 is similar to that of a flexible door leaf structure, so that the sealing and passability can be realized. When the hydraulic cylinder 300 is driven downward, the output end of the hydraulic cylinder 300 passes through the sealing part 720 and then enters the sample cavity. The environmental chamber box 710 is provided with a thermometer 730, a hygrometer 740 and a spray head 750 which penetrate into the sample cavity, and the environmental chamber box 710 is further provided with a heating component 760. The thermometer 730 and the hygrometer 740 can monitor the temperature and humidity in the sample cavity. The spray head 750 on the environmental chamber box 710 can realize the humidity increase in the sample cavity, and the heating component 760 on the environmental chamber box 710 can realize the temperature increase in the sample cavity. The structure type of the heating component 760 can be resistance heating, etc., and the specific implementation is subject to the heating effect. In the case where the test environment control is not needed, the environmental chamber assembly 700 can be detached from the sample seat 600, or the work of the components on the environmental chamber assembly 700 is not started.

[0051] In use: the working adjustment of each environmental chamber assembly 700 is set and the work is started, when the working temperature reaches the setting, the sample seat 600 corresponding to the environmental chamber assembly 700 is transferred to the right below the hydraulic cylinder 300 by the work of the linear actuator 400, and the test is completed.

[0052] In summary, the sample carrier 500 is arranged on the lower base 100 and connected to the output end of the linear driver 400. The linear driver 400 drives the sample carrier 500 to reciprocate in the length direction of the lower base 100; a plurality of sample holders 600 are arranged in the length direction of the sample carrier 500 for supporting samples to be tested, and by driving the sample carrier 500 in the length direction, different sample holders 600 can be transferred to be directly below the hydraulic cylinder 300; the thermometer 730 and the hygrometer 740 on the environmental chamber box 710 can monitor the temperature and humidity in the sample cavity, the spray head 750 on the environmental chamber box 710 can increase the humidity in the sample cavity, and the heating component 760 on the environmental chamber box 710 can increase the temperature in the sample cavity. When the working temperature reaches the set value, the sample holder 600 corresponding to the environmental chamber assembly 700 is transferred to be directly below the hydraulic cylinder 300 by the working of the linear driver 400, and the test is completed.

[0053] Referring to Figure 8 In one embodiment, the sample carrier 500 includes a plurality of structural segments 510 and a plurality of heat insulation segments 520 in the length direction, and each of the structural segments 510 corresponds to support a plurality of sample holders 600, and the heat insulation segments 520 are connected between two adjacent structural segments 510.

[0054] In this embodiment, the length direction of the sample carrier 500 is divided into structural segments 510, which provide structural strength for supporting the sample holders 600, and the heat insulation segments 520 reduce heat transfer between the structural segments 510 to ensure temperature control between the environmental chamber boxes 710. The material of the structural segment 510 can be high-strength alloy steel, and the material of the heat insulation segment 520 can be a high polymer with certain structural strength, such as PVC. The connection between the structural segment 510 and the heat insulation segment 520 can be various, such as buckling, clamping, or bolt connection.

[0055] In one embodiment, the structural segment 510 and the heat insulation segment 520 are in a clamping structure in the length direction.

[0056] In this embodiment, the connection mode of the structural segment 510 and the heat insulation segment 520 is limited to reduce the processing difficulty and greatly improve the flexibility of use. For example, the structural segment 510 and the heat insulation segment 520 are both plate-shaped structures, and form a groove structure in the width direction to be fixed in the length direction. The above fixing mode has the advantages of simple processing and convenient use.

[0057] Referring to Figures 1 to 7 In one embodiment, a cleaning brush 800 is arranged on the sample carrier 500 parallel to the sample holder 600.

[0058] In the embodiment, considering the possibility of contamination of the output end of the hydraulic cylinder 300 during the test of the sample to be tested, a cleaning brush 800 is arranged at the parallel position of the sample seat 600, and the cleaning of the output end of the hydraulic cylinder 300 by the cleaning brush 800 can be realized through the operation of the linear driver 400 after the output end of the hydraulic cylinder 300 is moved to the appropriate height, thereby ensuring the accuracy of the test process.

[0059] Referring to Figures 1 to 7 In an embodiment, the types of the plurality of sample seats 600 at least include a block whole type for performing a compressive strength test and a split support type for performing a fracture strength test.

[0060] In the embodiment, considering that the main material test items are the compressive strength and the fracture strength, the types of the sample seats 600 are diversified, thereby completing diversified performance tests. The sample seat 600 for performing the compressive strength test should be a whole block (such as a cubic shape) that can stably support the sample, so that the compressive strength test process can be realized when the output end of the hydraulic cylinder 300 is pressed down. The sample seat 600 for performing the fracture strength test should be a split support type (including two support seats), and the two ends of the sample are respectively supported on the two support seats, so that the fracture strength test process can be realized when the output end of the hydraulic cylinder 300 is pressed down.

[0061] In an embodiment, the environmental chamber box 710 is further provided with a cooling component.

[0062] In the embodiment, the temperature in the sample cavity can be ensured during the operation of the cooling component, and the operation form of the cooling component can be various, such as semiconductor refrigeration or a heat exchanger (heat exchange is performed through a cooling liquid). When the test condition of the sample to be tested is higher than the room temperature, the temperature condition is achieved through the operation of the cooling component.

[0063] In an embodiment, a test pressure head is detachably arranged corresponding to the output end of the hydraulic cylinder 300.

[0064] In the embodiment, considering that a specific test pressure head is required to complete performance tests in some cases, the test pressure head is detachably arranged corresponding to the output end of the hydraulic cylinder 300, thereby meeting the diversified test requirements.

[0065] In an embodiment, the sample carrier plate 500 and the lower base 100 are formed with a guide matching structure in the length direction.

[0066] In the embodiment, the position movement of the sample carrier plate 500 is accurate through the guiding cooperation structure, and thus the reliability of the test structure is improved. The specific form of the guiding structure can be various, for example, a groove structure is arranged on the length direction of the upper surface of the lower base 100, and a corresponding ridge structure is arranged on the length direction of the bottom of the sample carrier plate 500, and thus the guiding cooperation between the two is realized.

[0067] In one embodiment, the sample seat 600 is detachably arranged on the sample carrier plate 500.

[0068] In the embodiment, the sample seat 600 is detachable, and thus the use flexibility of the whole road material strength tester is improved. According to the actual sample selection, a suitable sample seat 600 is selected for installation. The installation mode of the sample seat 600 on the sample carrier plate 500 can be clamping, buckling or bolt connection and the like.

[0069] In one embodiment, the linear driver 400 is of a linear motor type or a screw rod driving type.

[0070] In the embodiment, the type of the linear driver 400 is limited, and thus the linear driver 400 can perform more accurate driving output, thereby providing a basis for the normal work of the whole road material strength tester. In other embodiments, the type of the linear driver 400 can also be pneumatic or hydraulic driving. The driving output size of the linear driver 400 can also be matched with the travel switch.

[0071] In summary, the road material strength tester provided by the utility model has the advantages that the sample carrier plate 500 is arranged on the lower base 100 and connected to the output end of the linear driver 400. The linear driver 400 drives the sample carrier plate 500 to reciprocate in the length direction of the lower base 100. A plurality of sample seats 600 are arranged in the length direction of the sample carrier plate 500 and used for supporting the samples to be tested. Different sample seats 600 can be transferred to the front of the hydraulic cylinder 300 in the length direction of the sample carrier plate 500. The thermometer 730 and the hygrometer 740 on the environmental chamber box 710 can monitor the temperature and humidity in the sample cavity. The spray head 750 on the environmental chamber box 710 can improve the humidity in the sample cavity. The heating component 760 on the environmental chamber box 710 can improve the temperature in the sample cavity. When the working temperature reaches the setting, the sample seat 600 corresponding to the environmental chamber assembly 700 is transferred to the front of the hydraulic cylinder 300 through the working of the linear driver 400, and the test is completed.

[0072] The above merely describes preferred embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which are made by using the content of the present application specification and drawings, are also included in the patent protection scope of the present application.

Claims

1. A road material strength tester characterized by, The application relates to a sample testing device, which comprises the following parts: a lower base (100) as a structural foundation; an upper base (200) supported on the lower base (100); a hydraulic cylinder (300) installed on the upper base (200) and with an output end arranged below; a linear driver (400) installed on the lower base (100); a sample carrier plate (500) arranged on the lower base (100) and connected to the output end of the linear driver (400), wherein the linear driver (400) drives the sample carrier plate (500) to reciprocate in the length direction of the lower base (100); a plurality of sample holders (600) arranged at intervals in the length direction of the sample carrier plate (500); a plurality of environmental chamber assemblies (700), wherein each environmental chamber assembly (700) comprises an environmental chamber box (710) arranged corresponding to the sample holder (600), the environmental chamber box (710) is detachably combined with the sample holder (600) and forms a sample cavity for accommodating a sample to be tested with the upper surface of the sample holder (600), the environmental chamber box (710) is provided with a sealing part (720) corresponding to the output end of the hydraulic cylinder (300) at the top, the environmental chamber box (710) is provided with a thermometer (730), a hygrometer (740) and a spray head (750) penetrating into the sample cavity, and the environmental chamber box (710) is further provided with a heating component (760), wherein when the hydraulic cylinder (300) is driven downward, the output end of the hydraulic cylinder (300) penetrates through the sealing part (720) and then reaches the sample cavity.

2. The road material strength tester of claim 1, wherein, The sample carrier plate (500) comprises a plurality of structural segments (510) and a plurality of heat insulation segments (520) in the length direction, the plurality of structural segments (510) respectively correspond to support the plurality of sample holders (600), and the heat insulation segments (520) are connected between two adjacent structural segments (510).

3. The road material strength tester of claim 2, wherein, The structural segment (510) and the heat insulation segment (520) are in a clamping structure in the length direction.

4. The road material strength tester according to any one of claims 1 to 3, characterized in that, A cleaning brush (800) is arranged on the sample carrier plate (500) and parallel to the sample holder (600).

5. The road material strength tester according to any one of claims 1 to 3, wherein The types of the plurality of sample holders (600) at least include a block integral type for performing compression strength test and a split support type for performing fracture strength.

6. The road material strength tester according to any one of claims 1 to 3, wherein The environmental chamber box (710) is further provided with a cooling component.

7. The road material strength tester according to any one of claims 1 to 3, wherein A test pressure head is detachably arranged corresponding to the output end of the hydraulic cylinder (300).

8. The road material strength tester according to any one of claims 1 to 3, characterized in that, The sample carrier plate (500) and the lower base (100) are formed with a guide matching structure in the length direction.

9. The road material strength tester according to any one of claims 1 to 3, wherein The sample holder (600) is detachably arranged on the sample carrier plate (500).

10. The road material strength tester according to any one of claims 1 to 3, wherein The linear driver (400) is a linear motor type or a screw rod driving type.

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