Performance detection equipment for asphalt concrete preparation

Abstract

The utility model relates to performance detection equipment for asphalt concrete preparation, and belongs to the field of concrete performance detection, the performance detection equipment comprises a detection box, the inner walls of the left and right sides of the detection box are provided with temperature adjusting mechanisms for adjusting the temperature environment, and the inner wall of the detection box is provided with a detection mechanism for detecting the asphalt concrete preparation performance. According to the performance detection equipment for asphalt concrete preparation, temperature adjusting mechanisms are arranged, are located on the inner walls of the left side and the right side of the detection box and are used for adjusting the temperature environment so as to simulate the influence of different temperature conditions on asphalt concrete, and components such as a heating frame, a heat-resisting fan, an electric heating rod and a protection net work together; the temperature in the detection box is controlled through heating and wind power circulation, meanwhile, the draught fan can extract air in the box through the two exhaust pipes to be exhausted outwards along the air outlet pipe, then hot air is guided out to be used for reducing the temperature, and the temperature in the box can be effectively and rapidly controlled within the required range in cooperation with the heating frame.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete performance detection, in particular to performance detection equipment for asphalt concrete preparation. Background Art

[0002] Asphalt concrete, commonly known as asphalt concrete, is a mixture of artificially selected mineral materials with a certain graded composition, such as crushed stone or crushed gravel, stone chips or sand, mineral powder, etc., and a certain proportion of road asphalt materials, mixed under strictly controlled conditions. According to the different gradations of mineral materials, it can be divided into several categories such as dense gradation, semi-open gradation and open gradation. Open-graded mixture is also called asphalt gravel. Among them, the hot-mixed and hot-laid dense-graded gravel mixture is durable, high in strength, and good in integrity. It is a representative material for the construction of high-grade asphalt pavement and is the most widely used.

[0003] As disclosed in Chinese Patent Publication No. (CN215339434U), a performance testing device for asphalt concrete preparation includes a device shell and a lifting mechanism, a clamping mechanism is symmetrically installed on one side of the device shell, a water storage tank is opened at the inner bottom end of the device shell, a water seepage column is installed at the inner top end of the device shell, a drain valve is installed at the top of the water storage tank, a lifting mechanism is installed at one end of the water seepage column, a water pump is installed at the top of the device shell, a water outlet pipe is installed at the output end of the water pump, and a water inlet pipe is installed at the input end of the water pump. During use, when the sliding rod moves, it can push the sliding sleeve, so that the sliding sleeve continuously squeezes the asphalt concrete, thereby allowing the lifting mechanism to detect the hardness of the asphalt concrete. After the water pump fills the water seepage column with water, the water in the water seepage column will penetrate downward through the asphalt concrete, thereby detecting the water seepage performance of the asphalt concrete.

[0004] However, the above patent still has the problem of poor performance testing of asphalt concrete preparation. For example, the hardness of asphalt concrete is tested by a lifting mechanism in the above patent, but this method is not convenient for testing the performance of asphalt concrete under different temperature environments, and is not convenient for efficiently measuring the compressive strength of asphalt concrete. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a performance testing device for asphalt concrete preparation, which has the advantages of good concrete performance testing effect, etc., and solves the problem of poor concrete performance testing effect in the prior art for asphalt concrete preparation.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a performance testing device for asphalt concrete preparation, comprising a testing box, the inner walls on the left and right sides of the testing box are provided with a temperature regulating mechanism for regulating the temperature environment, and the inner wall of the testing box is provided with a testing mechanism for testing the performance of asphalt concrete preparation;

[0007] The temperature control mechanism includes two heating frames, two heat-resistant fans, two electric heating rods, two protective nets, a fan, a three-way pipe, two exhaust pipes and an air outlet pipe. The left and right inner walls of the detection box are provided with connecting ports, and the two heating frames are respectively fixed to the inner walls of the two connecting ports, the two heat-resistant fans are respectively fixed vertically to the inner walls of the two heating frames, the two electric heating rods are respectively fixed to the inner walls of the two heating frames, the two protective nets are respectively fixed to the opposite sides of the two heating frames, the fan is fixed to the inner bottom wall of the detection box, the three-way pipe is connected to the air inlet end of the fan, the two exhaust pipes are respectively connected to the two ends of the three-way pipe, and the air outlet pipe is connected to the air outlet end of the fan.

[0008] Furthermore, a box door is hinged on the front of the detection box through a hinged frame, and a controller is fixed on the front of the box door.

[0009] Furthermore, dustproof nets are fixed to the inner walls of the two heating frames, and a temperature sensor is fixed to the inner wall of the detection box.

[0010] Furthermore, the top ends of the two air exhaust pipes respectively penetrate and extend to the left and right inner walls of the detection box, and the bottom end of the air outlet pipe penetrates and extends to the outside of the detection box.

[0011] Furthermore, the detection mechanism includes a bearing plate, a support seat, a first hydraulic cylinder, a push plate, a pressure block, two second hydraulic cylinders and two shear cone blocks, the bearing plate is horizontally fixed on the inner wall of the detection box, the support seat is fixed to the upper surface of the bearing plate, the first hydraulic cylinder is fixed to the middle of the upper surface of the detection box, the push plate is fixed to the outer side of the output shaft of the first hydraulic cylinder, the pressure block is fixed to the middle part of the lower surface of the push plate, the two second hydraulic cylinders are respectively fixed to the left and right sides of the upper surface of the push plate, and the two shear cone blocks are respectively fixed to the outer sides of the output shafts of the two second hydraulic cylinders.

[0012] Furthermore, a plurality of pressure sensors are fixed to the inner bottom wall of the support seat, and a placement plate is fixed to the upper surface of the plurality of pressure sensors.

[0013] Furthermore, the length of the shear cone block is equal to the width of the support seat.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] 1. The performance testing equipment for asphalt concrete preparation is equipped with a temperature regulating mechanism, which is located on the left and right inner walls of the test box to adjust the temperature environment to simulate the influence of different temperature conditions on asphalt concrete. The heating frame, heat-resistant fan, electric heating rod and protective net and other components work together to control the temperature in the test box through heating and wind circulation. At the same time, the fan can draw the air in the box through two exhaust pipes and discharge it outward along the outlet pipe, thereby leading out the hot air to reduce the temperature for use. In conjunction with the heating frame, the temperature in the box can be effectively and quickly controlled within the required range.

[0016] 2. The performance testing equipment for asphalt concrete preparation is equipped with a testing mechanism to place the asphalt concrete sample on the placement plate above the support seat, and then start the first hydraulic cylinder to drive the pressure block to move down through the push plate to fit the surface of the asphalt concrete sample and apply pressure. In conjunction with multiple pressure sensors, the stress condition of the sample can be monitored in real time to ensure the accuracy and stability of the test process. When performing a compressive test on the asphalt concrete, the output shaft of the second hydraulic cylinder can be started to extend and apply shear force by pushing the shear cone block, thereby performing a variety of performance tests on the asphalt concrete sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a front view of the structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the temperature adjustment mechanism of the utility model;

[0020] Figure 4 It is a schematic diagram of the detection mechanism of the utility model.

[0021] In the figure: 1 detection box, 2 temperature adjustment mechanism, 21 heating frame, 22 heat-resistant fan, 23 electric heating rod, 24 protection net, 25 fan, 26 three-way pipe, 27 exhaust pipe, 28 outlet pipe, 3 detection mechanism, 31 bearing plate, 32 support seat, 33 first hydraulic cylinder, 34 push plate, 35 pressure block, 36 second hydraulic cylinder, 37 shear cone block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-2In this embodiment, a performance testing device for asphalt concrete preparation includes a testing box 1. The inner walls on the left and right sides of the testing box 1 are provided with a temperature regulating mechanism 2 for adjusting the temperature environment. The inner wall of the testing box 1 is provided with a testing mechanism 3 for testing the performance of asphalt concrete preparation.

[0024] In this embodiment, a box door is hinged on the front of the detection box 1 through a hinge frame, and a controller is fixed on the front of the box door.

[0025] See also Figure 3 In order to test the temperature control performance of asphalt concrete, the temperature control mechanism 2 in this embodiment includes two heating frames 21, two heat-resistant fans 22, two electric heating rods 23, two protective nets 24, a fan 25, a three-way pipe 26, two exhaust pipes 27 and an outlet pipe 28. The inner walls on both sides of the left and right sides of the test box 1 are provided with connection ports, and the two heating frames 21 are respectively fixed to the inner walls of the two connection ports, the two heat-resistant fans 22 are respectively fixed vertically to the inner walls of the two heating frames 21, the two electric heating rods 23 are respectively fixed to the inner walls of the two heating frames 21, and the heating frames 21 are respectively fixed to the inner walls of the two heating frames 21. The electric heating rod 23 provides heat, and the heat-resistant fan 22 distributes the hot air evenly into the test box 1 through wind force. The two protective nets 24 are respectively fixed to the opposite sides of the two heating frames 21. The fan 25 is fixed to the inner bottom wall of the test box 1. The three-way pipe 26 is connected to the air inlet end of the fan 25. By adjusting the power of the electric heating rod 23 and the speed of the fan, the temperature environment can be accurately controlled to ensure the performance test of asphalt concrete under different experimental conditions. The two exhaust pipes 27 are respectively connected to the two ends of the three-way pipe 26, and the outlet pipe 28 is connected to the outlet end of the fan 25.

[0026] In this embodiment, dustproof nets are fixed to the inner walls of the two heating frames 21, and temperature sensors are fixed to the inner walls of the detection box 1. The temperature inside the detection box 1 is controlled by heating and wind circulation, and the temperature inside the box is monitored by the temperature sensor. The top ends of the two exhaust pipes 27 respectively penetrate and extend to the left and right inner walls of the detection box 1, and the bottom end of the air outlet pipe 28 penetrates and extends to the outside of the detection box 1. The fan 25 can draw air in the box through the two exhaust pipes 27 and discharge it outward along the air outlet pipe 28, thereby exporting the hot air to reduce the temperature for use. In conjunction with the heating frame 21, the temperature inside the box can be effectively and quickly controlled within the required range.

[0027] See also Figure 4In order to perform various performance tests on asphalt concrete, the testing mechanism 3 in this embodiment includes a bearing plate 31, a support seat 32, a first hydraulic cylinder 33, a push plate 34, a pressure block 35, two second hydraulic cylinders 36 and two shear cone blocks 37. The bearing plate 31 is horizontally fixed to the inner wall of the testing box 1, the support seat 32 is fixed to the upper surface of the bearing plate 31, the first hydraulic cylinder 33 is fixed to the middle of the upper surface of the testing box 1, the push plate 34 is fixed to the outer side of the output shaft of the first hydraulic cylinder 33, and the pressure block 35 is fixed to the middle of the lower surface of the push plate 34. The soil sample is placed on the placement plate above the support seat 32, and then the first hydraulic cylinder 33 is started to drive the pressure block 35 to move downward through the push plate 34 to fit the surface of the asphalt concrete sample and apply pressure. The two second hydraulic cylinders 36 are respectively fixed to the left and right sides of the upper surface of the push plate 34, and the two shear cone blocks 37 are respectively fixed to the outer sides of the output shafts of the two second hydraulic cylinders 36. When the asphalt concrete is subjected to a compression test, the output shaft of the second hydraulic cylinder 36 can be started to extend and apply shear force by pushing the shear cone block 37, thereby performing a variety of performance tests on the asphalt concrete sample.

[0028] In this embodiment, several pressure sensors are fixed to the inner bottom wall of the support seat 32, and a placement plate is fixed to the upper surface of the several pressure sensors. In conjunction with multiple pressure sensors, the stress condition of the sample can be monitored in real time to ensure the accuracy and stability of the test process. The length of the shear cone block 37 is equal to the width of the support seat 32.

[0029] The working principle of the above embodiment is:

[0030] (1) When the asphalt concrete is used for temperature control performance testing, the temperature in the test box 1 is controlled by heating and wind circulation. The temperature in the box is monitored by a temperature sensor. The heating frame 21 provides heat through the electric heating rod 23, and the heat-resistant fan 22 distributes the hot air evenly into the test box 1 through wind. By adjusting the power of the electric heating rod 23 and the speed of the fan, the temperature environment can be accurately controlled to ensure the performance test of the asphalt concrete under different experimental conditions. At the same time, the fan 25 can draw the air in the box through two exhaust pipes 27 and discharge it outward along the outlet pipe 28, thereby leading out the hot air to reduce the temperature. In conjunction with the heating frame 21, the temperature in the box can be effectively and quickly controlled within the required range.

[0031] (2) When performing various performance tests on asphalt concrete, the asphalt concrete sample is placed on the placement plate above the support seat 32, and then the first hydraulic cylinder 33 is started to drive the pressure block 35 to move downward through the push plate 34 to fit the surface of the asphalt concrete sample and apply pressure. In conjunction with multiple pressure sensors, the stress condition of the sample can be monitored in real time to ensure the accuracy and stability of the test process. When performing compression resistance testing on asphalt concrete, the output shaft of the second hydraulic cylinder 36 can be started to extend and apply shear force by pushing the shear cone block 37, thereby performing various performance tests on the asphalt concrete sample.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0033] The standard parts used in this application document can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented through simple programming by technicians in this field, which is common knowledge in this field. Therefore, this application document will no longer explain the control method and circuit connection in detail.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A performance testing device for asphalt concrete preparation, comprising a testing box (1), characterized in that: The left and right inner walls of the detection box (1) are provided with temperature adjustment mechanisms (2) for adjusting the temperature environment, and the inner wall of the detection box (1) is provided with a detection mechanism (3) for detecting the preparation performance of asphalt concrete; The temperature control mechanism (2) comprises two heating frames (21), two heat-resistant fans (22), two electric heating rods (23), two protective nets (24), a fan (25), a three-way pipe (26), two exhaust pipes (27) and an air outlet pipe (28). The inner walls on the left and right sides of the detection box (1) are provided with connection ports, and the two heating frames (21) are respectively fixed to the inner walls of the two connection ports. The two heat-resistant fans (22) are respectively connected to the inner walls of the two heating frames (21). The two electric heating rods (23) are fixed vertically to the inner walls of the two heating frames (21), the two protective nets (24) are fixed to the opposite sides of the two heating frames (21), the fan (25) is fixed to the inner bottom wall of the detection box (1), the three-way pipe (26) is connected to the air inlet end of the fan (25), the two exhaust pipes (27) are connected to the two ends of the three-way pipe (26), and the air outlet pipe (28) is connected to the air outlet end of the fan (25).

2. The performance testing equipment for asphalt concrete preparation according to claim 1, characterized in that: The front of the detection box (1) is hinged with a box door via a hinged frame, and a controller is fixed on the front of the box door.

3. The performance testing equipment for asphalt concrete preparation according to claim 1, characterized in that: Dust-proof nets are fixed to the inner walls of the two heating frames (21), and a temperature sensor is fixed to the inner wall of the detection box (1).

4. The performance testing equipment for asphalt concrete preparation according to claim 1, characterized in that: The top ends of the two air exhaust pipes (27) respectively penetrate and extend to the left and right inner walls of the detection box (1), and the bottom end of the air outlet pipe (28) penetrates and extends to the outside of the detection box (1).

5. The performance testing equipment for asphalt concrete preparation according to claim 1, characterized in that: The detection mechanism (3) comprises a bearing plate (31), a support seat (32), a first hydraulic cylinder (33), a push plate (34), a pressure block (35), two second hydraulic cylinders (36) and two shear cone blocks (37); the bearing plate (31) is horizontally fixed on the inner wall of the detection box (1); the support seat (32) is fixed to the upper surface of the bearing plate (31); the first hydraulic cylinder (33) is fixed to the middle part of the upper surface of the detection box (1); the push plate (34) is fixed to the outer side of the output shaft of the first hydraulic cylinder (33); the pressure block (35) is fixed to the middle part of the lower surface of the push plate (34); the two second hydraulic cylinders (36) are respectively fixed to the left and right sides of the upper surface of the push plate (34); and the two shear cone blocks (37) are respectively fixed to the outer sides of the output shafts of the two second hydraulic cylinders (36).

6. The performance testing equipment for asphalt concrete preparation according to claim 5, characterized in that: A plurality of pressure sensors are fixed on the inner bottom wall of the support seat (32), and a placement plate is fixed on the upper surface of the plurality of pressure sensors.

7. The performance testing equipment for asphalt concrete preparation according to claim 5, characterized in that: The length of the shear cone block (37) is equal to the width of the support seat (32).

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