Force ductility measuring instrument for asphalt material

Abstract

The invention discloses a force ductility measuring instrument for an asphalt material, and relates to the technical field of detection equipment. Comprising a water bath box, a fixing plate is arranged at one end of an inner cavity of the water bath box, a plurality of evenly-distributed fixing columns A are fixedly arranged on the upper portion of the fixing plate, a stretching part is arranged in the inner cavity of the water bath box, a plurality of evenly-distributed asphalt samples are arranged between the fixing columns A and the stretching part, and the stretching part is connected with a control center. The adjusting assembly can adjust the distance between the fixed plate and the sliding assembly, so that the asphalt sample cannot be bent and stretched, and the ductility detection result of the asphalt sample is effectively improved; when a top block of the sliding assembly is in contact with a pressure sensor, the control center starts to record displacement data of the asphalt sample, and the ductility detection result of the asphalt sample is further improved; the sliding assembly can effectively improve the stress detection result of the asphalt ductility detector on the asphalt sample; the pressure sensor is matched with the control center to record the displacement distance of the fractured asphalt sample, manual operation recording is not needed, and operation is easy and convenient.

Description

Technical Field

[0001] The invention relates to the technical field of detection equipment, in particular to a force-ductility measuring instrument for asphalt materials. Background Art

[0002] Asphalt is a byproduct of petroleum refining. Direct disposal will cause environmental pollution and waste of resources. Asphalt can be used in road paving and is one of the essential raw materials for asphalt roads. Asphalt ductility testing is required before it is used in road paving. The asphalt ductility tester is used to test the ductility of asphalt. The asphalt ductility tester can accurately detect the ductility of asphalt. When placing the asphalt sample on the stretching device of the current asphalt ductility tester, the stretching device of the existing asphalt ductility tester cannot be accurately positioned, resulting in the distance between the stretching device and the fixed plate of the asphalt ductility tester being too large or too small, so that the asphalt sample will inevitably bend or stretch when placed, thereby affecting the ductility test result of the asphalt sample; when conducting asphalt ductility testing, the staff needs to observe the status of the asphalt sample at all times. When the asphalt sample is broken, the staff needs to operate the asphalt ductility tester and record the displacement distance of the broken asphalt sample, which is extremely inconvenient to operate; in addition, although some existing asphalt ductility testers can perform force testing on asphalt samples, the detection effect is not good and the accuracy is not high.

[0003] Therefore, we made improvements on this and proposed a force-ductility measuring instrument for asphalt materials. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a force ductility meter for asphalt materials, which solves the problems in the prior art that the asphalt sample bends or stretches when placed in the asphalt ductility tester, thereby affecting the asphalt ductility test result; the staff is required to record the displacement data of the asphalt sample when it breaks, which is inconvenient to operate; and the asphalt sample cannot be accurately subjected to force testing.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a force-ductility meter for asphalt materials, comprising a water bath, a fixed plate is fixedly provided at one end of the inner cavity of the water bath transversely along the width direction of the water bath, a plurality of evenly distributed fixed columns A are fixedly provided on the upper part of the fixed plate along the width direction of the water bath, a stretching component is provided in the inner cavity of the water bath transversely along the width direction of the water bath, the stretching component is movably arranged along the length direction of the water bath, a plurality of evenly distributed asphalt samples are provided between the fixed column A and the stretching component, one end of the asphalt sample is sleeved on the fixed column A, and the other end of the asphalt sample is sleeved on the stretching component, the stretching component is connected to a control center, the control center controls the stretching component to stretch the asphalt sample, realizes the elongation test of the asphalt sample, and detects the tensile force borne by the asphalt sample during stretching, so as to evaluate the deformation resistance and durability of the asphalt sample; The stretching component includes a sliding plate, a sliding assembly and an adjusting assembly. The upper surface of the sliding plate is provided with a plurality of slide rail slot blocks corresponding to the fixed column A. The sliding assembly is provided with a plurality of sliding assemblies, and the sliding assemblies are provided in a one-to-one correspondence with the slide rail slot blocks. The sliding assembly is slidably arranged in the slide rail slot blocks, and the sliding assembly is slidably arranged along the length direction of the water bath. There are two adjusting assemblies, and the adjusting assemblies are symmetrically arranged at both ends of the bottom of the sliding plate. The inner cavity of the water bath is symmetrically provided with precision screws along the length direction of the water bath. The two ends of the precision screw are rotatably arranged on the side walls on both sides in the width direction of the water bath. A low-speed motor is arranged at one end of the precision screw. The adjusting component threaded transmission sleeve is arranged on the precision screw. The low-speed motor drives the precision screw to rotate. The stretching component is moved along the length direction of the water bath through the cooperation of the precision screw and the adjusting component.

[0006] As a preferred solution, the bottom wall of the slide rail slot block is provided with a sliding groove, the upper part of the slide rail slot block is provided with an air avoidance groove A, the sliding groove is connected to the air avoidance groove A, and the sliding groove and the air avoidance groove A are closed at one end close to the fixed column A; The sliding plate is provided with a plurality of air avoidance grooves B arranged one by one corresponding to the slide rail groove blocks, the air avoidance grooves B are arranged directly below the inner cavity of the air avoidance grooves A, and the sliding grooves, the air avoidance grooves A and the air avoidance grooves B are arranged overlappingly; The sliding assembly comprises a fixed column B, a sliding block and a top block, wherein the fixed column B is fixedly arranged at the upper middle end of the sliding block, and one end of the top block is threadedly fixedly connected to the middle part of a side wall of one side of the lower surface of the sliding block; The sliding block is slidably arranged in the sliding groove, the fixed column B is arranged in the air-avoiding groove A, the top block is arranged in the air-avoiding groove B, the fixed column B and the air-avoiding groove A are arranged to avoid air, and the top block and the air-avoiding groove B are arranged to avoid air; The lower surface of the sliding plate is provided with a plurality of mounting plates arranged one by one corresponding to the air-avoiding grooves B, the mounting plates are fixedly arranged on a side wall of the sliding plate close to the fixed column A, the mounting plates are fixedly provided with a pressure sensor, and the front end of the pressure sensor can be arranged in affixed with the top block; The wall surfaces on which the slider and the sliding groove are slidably arranged are smoothly arranged, and the wall surfaces on which the slider and the sliding plate are slidably arranged are smoothly arranged.

[0007] As a preferred solution, the outer wall fixing sleeves of the fixing columns A and B are provided with support rings, the support rings of the fixing columns A and B are arranged on the same plane of the inner cavity of the water bath, and the lower surface of the support ring arranged on the fixing column B is spaced apart from the upper surface of the slide rail groove block; A positioning block is fixedly provided on the upper surface of the support ring. The positioning block is a U-shaped ring structure. Fixed columns A and B are arranged in the inner cavity of the positioning block. The mouths of the positioning blocks arranged on the upper parts of fixed columns A and B are arranged relatively.

[0008] As a preferred solution, the adjustment assembly includes a threaded sleeve, a sliding sleeve and a fixed block, the threaded sleeve is threadedly sleeved on the precision lead screw, the sliding sleeve is slidably sleeved on the threaded sleeve, the fixed block is fixedly arranged on the outer surface of the sliding sleeve, and the fixed block is threadedly fixedly connected to the lower surface of the sliding plate; The two ends of the threaded sleeve are fixed with retaining rings, which can prevent the sliding sleeve from separating from the threaded sleeve; A threaded hole is provided in the middle of the upper surface of the fixing block, the threaded hole is connected to the sliding sleeve, a fixing bolt is threadedly connected to the threaded hole, the end of the fixing bolt is provided on the upper surface of the sliding plate, and the front end of the fixing bolt can penetrate the sliding sleeve and be squeezed on the outer wall of the threaded sleeve.

[0009] As a preferred solution, the threaded sleeve comprises an upper threaded half-tube and a lower threaded half-tube, the upper threaded half-tube and the lower threaded half-tube are buckled together, and the fixing block is fixedly arranged on the upper outer wall of the upper threaded half-tube; The upper threaded half pipe and the lower threaded half pipe are symmetrically provided with threaded blocks A in the middle of the side walls on both sides in the length direction. The threaded blocks A of the upper threaded half pipe and the lower threaded half pipe can be symmetrically fitted and arranged. The threaded blocks A of the upper threaded half pipe and the lower threaded half pipe are fixedly connected by bolts.

[0010] As a preferred solution, threaded blocks B are symmetrically fixed at both ends of the fixed block, positioning grooves are provided at both ends of the lower surface of the sliding plate, the fixed block and the upper part of the threaded block B are tightly inserted in the positioning grooves, and the threaded block B and the sliding plate are fixedly connected by bolts.

[0011] As a preferred solution, the asphalt sample comprises an asphalt sample body and a test mold end mold, and both ends of the asphalt sample body are clamped in the inner cavity of the end of the test mold end mold; A fixing hole is provided at the front end of the test mold end mold, and the test mold end molds at both ends of the asphalt sample body are respectively mounted on the fixed column A and the fixed column B through the fixing holes. The positioning block on the upper part of the support ring can limit the test mold end mold to prevent the test mold end mold from rotating on the fixed column A and the fixed column B, thereby preventing the asphalt sample body from bending.

[0012] As a preferred solution, the control center is arranged on one side of the water bath, the pressure sensor is electrically connected to the control center, a motor box is provided on the other side of the water bath, a low-speed motor is arranged in the middle of the inner cavity of the motor box, a reducer is connected to the upper part of the low-speed motor, one end of the precision screw is rotatably arranged in the motor box, the reducer is transmission-connected to the precision screw through a plurality of meshing gears, the gears are arranged in the motor box, and the two precision screws are arranged to rotate in the same direction.

[0013] As a preferred solution, the side walls on both sides of the water bath in the length direction are symmetrically provided with slide rail grooves A, and the side walls on both sides of the water bath in the length direction are symmetrically provided with slide rail grooves B, and the slide rail grooves A are arranged on the upper part of the slide rail grooves B; The slide rail groove A is slidably inserted with a glass baffle A, and the slide rail groove B is slidably inserted with a glass baffle B. One end of the glass baffle A can be slidably set on one end of the water bath box, and one end of the glass baffle B can be slidably set on the other end of the water bath box, thereby closing the water bath box.

[0014] As a preferred solution, a waterway box is provided at the bottom of the water bath, and a heater, a water chiller and a water pump are provided in the inner cavity of the waterway box from left to right in sequence, the heater, the water chiller and the water pump are connected by pipelines, the water pump is connected to the inner cavity of the water bath through a pipeline, and the heater is connected to the inner cavity of the water bath through a pipeline; A flow stabilizing plate is transversely fixedly arranged in the middle of the inner cavity of the water bath, and the side walls of the flow stabilizing plate are fixedly connected to the inner wall of the water bath. The flow stabilizing plate is a mesh plate structure and is arranged at the lower part of the stretching component.

[0015] The present invention has the following beneficial effects: The adjusting component of the stretching component can adjust the distance between the fixed plate and the sliding component, so that the asphalt sample can be loosely fixed and placed between the fixed plate and the sliding component, and the asphalt sample will not bend or stretch, which effectively improves the ductility test result of the asphalt sample; The sliding assembly slides in the slide rail groove block. When the top block of the sliding assembly contacts the pressure sensor, the control center starts to record the displacement data of the asphalt sample, further improving the ductility test results of the asphalt sample. The smooth setting of the sliding assembly and the slide rail groove block, the spacing setting of the support ring and the slide rail groove block, the air-avoiding setting of the fixed column B and the air-avoiding groove A, and the air-avoiding setting of the top block and the air-avoiding groove B can effectively reduce the influence of friction on the slider, thereby improving the sensitivity of the pressure sensor to the force of the asphalt sample, and thereby improving the force detection result of the asphalt ductility tester on the asphalt sample; The pressure sensor and the control center cooperate to detect the stress condition of the asphalt sample. When the asphalt sample is broken and the pressure sensor cannot detect the stress condition of the asphalt sample, the control center records the displacement distance of the broken asphalt sample. No manual operation is required, and the operation is simple.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structural cross-section of the present invention; Figure 2 for Figure 1 A schematic diagram of the enlarged structure of local A; Figure 3 It is a schematic diagram of the structure of the fixing plate and the fixing column of the present invention; Figure 4 It is a schematic diagram of the structure of the stretching component of the present invention; Figure 5 This is a schematic diagram of the structure of the stretching component of the present invention from the back side perspective; Figure 6 It is a front structural schematic diagram of the sliding plate of the present invention; Figure 7 It is a schematic diagram of the back structure of the sliding plate of the present invention; Figure 8 It is a schematic diagram of the structure of the sliding assembly of the present invention; Fig. 9 It is a schematic diagram of the structure of the regulating component of the present invention; Fig.10 It is a schematic diagram of the structure of the asphalt sample of the present invention; In the figure, 1, water bath; 2, fixed plate; 3, fixed column A; 4, tensile component; 5, asphalt sample; 6, control center; 7, sliding plate; 8, sliding assembly; 9, adjustment assembly; 10, slide rail groove block; 11, precision screw; 12, low-speed motor; 13, sliding groove; 14, air avoidance groove A; 15, air avoidance groove B; 16, fixed column B; 17, slider; 18, top block; 19, mounting plate; 20, pressure sensor; 21, support ring; 22, positioning block; 23, threaded sleeve; 24, sliding sleeve; 25. Fixing block; 26. Retaining ring; 27. Fixing bolt; 28. Upper threaded half pipe; 29. ​​Lower threaded half pipe; 30. Threaded block A; 31. Threaded block B; 32. Positioning groove; 33. Asphalt specimen body; 34. Test mold end mold; 35. Fixing hole; 36. Motor box; 37. Reducer; 38. Gear; 39. Slide rail groove A; 40. Slide rail groove B; 41. Glass baffle A; 42. Glass baffle B; 43. Waterway box; 44. Heater; 45. Chiller; 46. Water pump; 47. Flow stabilizer. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0019] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0020] For examples, see Figures 1 to 10The embodiment of the present invention provides a technical solution: a force-ductility meter for asphalt materials, comprising a water bath 1, a fixing plate 2 is fixedly provided at one end of the inner cavity of the water bath 1 transversely along the width direction of the water bath 1, a plurality of evenly distributed fixing columns A3 are fixedly provided on the upper part of the fixing plate 2 along the width direction of the water bath 1, a stretching component 4 is provided transversely along the width direction of the water bath 1 in the inner cavity of the water bath 1, the stretching component 4 is movably arranged along the length direction of the water bath 1, a plurality of evenly distributed asphalt samples 5 are provided between the fixing column A3 and the stretching component 4, one end of the asphalt sample 5 is sleeved on the fixing column A3, the other end of the asphalt sample 5 is sleeved on the stretching component 4, the stretching component 4 is connected to the control center 6, the control center 6 controls the stretching component 4 to stretch the asphalt sample 5, to realize the elongation test of the asphalt sample 5, and to detect the tensile force borne by the asphalt sample 5 during stretching, so as to evaluate the deformation resistance and durability of the asphalt sample 5; The stretching component 4 includes a sliding plate 7, a sliding assembly 8 and an adjusting assembly 9. The upper surface of the sliding plate 7 is provided with a plurality of slide rail slot blocks 10 corresponding to the fixed column A3. The sliding assembly 8 is provided with a plurality of sliding assemblies, and the sliding assemblies 8 are provided in a one-to-one correspondence with the slide rail slot blocks 10. The sliding assembly 8 is slidably arranged in the slide rail slot blocks 10. The sliding assembly 8 is slidably arranged along the length direction of the water bath 1. There are two adjusting assemblies 9, and the adjusting assemblies 9 are symmetrically arranged at both ends of the bottom of the sliding plate 7. The inner cavity of the water bath 1 is symmetrically provided with precision screws 11 along the length direction of the water bath 1. The two ends of the precision screw 11 are rotatably arranged on the side walls on both sides in the width direction of the water bath 1. A low-speed motor 12 is arranged at one end of the precision screw 11. The adjusting component 9 is threadedly sleeved on the precision screw 11. The low-speed motor 12 drives the precision screw 11 to rotate. The stretching component 4 is moved along the length direction of the water bath 1 through the cooperation of the precision screw 11 and the adjusting component 9.

[0021] The bottom wall of the slide rail slot block 10 is provided with a slide groove 13, and the upper part of the slide rail slot block 10 is provided with an air avoidance groove A14, the slide groove 13 is connected with the air avoidance groove A14, and the slide groove 13 and the air avoidance groove A14 are closed at one end close to the fixed column A3; The sliding plate 7 is provided with a plurality of air-avoiding grooves B15 corresponding to the slide rail groove blocks 10 one by one, and the air-avoiding grooves B15 are arranged directly below the inner cavity of the air-avoiding grooves A14, and the sliding grooves 13, the air-avoiding grooves A14 and the air-avoiding grooves B15 are arranged overlappingly; The sliding assembly 8 comprises a fixed column B16, a slider 17 and a top block 18. The fixed column B16 is fixedly arranged at the upper middle end of the slider 17. One end of the top block 18 is threadedly fixedly connected to the middle of a side wall of a lower surface of the slider 17. The sliding block 17 is slidably arranged in the sliding groove 13, the fixing column B16 is arranged in the air-avoiding groove A14, and the top block 18 is arranged in the air-avoiding groove B15. The fixing column B16 and the air-avoiding groove A14 are arranged to avoid air, and the top block 18 and the air-avoiding groove B15 are arranged to avoid air. The lower surface of the sliding plate 7 is provided with a plurality of mounting plates 19 corresponding to the air-avoiding grooves B15. The mounting plates 19 are fixedly arranged on a side wall of the sliding plate 7 close to the fixing column A3. The mounting plates 19 are fixedly provided with a pressure sensor 20. The front end of the pressure sensor 20 can be fitted with the top block 18. The wall surfaces on which the slider 17 and the sliding groove 13 are slidably arranged are smooth, and the wall surfaces on which the slider 17 and the sliding plate 7 are slidably arranged are smooth.

[0022] The outer wall fixing sleeves of the fixing columns A3 and B16 are provided with support rings 21, and the support rings 21 of the fixing columns A3 and B16 are arranged on the same plane of the inner cavity of the water bath 1, and the lower surface of the support ring 21 arranged on the fixing column B16 is spaced apart from the upper surface of the slide rail groove block 10; A positioning block 22 is fixedly provided on the upper surface of the support ring 21. The positioning block 22 is a U-shaped ring structure. The fixing column A3 and the fixing column B16 are arranged in the inner cavity of the positioning block 22. The mouths of the positioning block 22 arranged on the upper part of the fixing column A3 and the fixing column B16 are arranged relatively.

[0023] The adjusting assembly 9 includes a threaded sleeve 23, a sliding sleeve 24 and a fixed block 25. The threaded sleeve 23 is threadedly sleeved on the precision screw 11, the sliding sleeve 24 is slidably sleeved on the threaded sleeve 23, and the fixed block 25 is fixedly arranged on the outer surface of the sliding sleeve 24. The fixed block 25 is threadedly fixedly connected to the lower surface of the sliding plate 7. The two ends of the threaded sleeve 23 are fixed with retaining rings 26, which can prevent the sliding sleeve 24 from being separated from the threaded sleeve 23; A threaded hole is provided in the middle of the upper surface of the fixing block 25, and the threaded hole is connected to the sliding sleeve 24. A fixing bolt 27 is threadedly connected to the threaded hole. The end of the fixing bolt 27 is set on the upper surface of the sliding plate 7, and the front end of the fixing bolt 27 can penetrate the sliding sleeve 24 and be squeezed on the outer wall of the threaded sleeve 23.

[0024] The threaded sleeve 23 comprises an upper threaded half-tube 28 and a lower threaded half-tube 29, the upper threaded half-tube 28 and the lower threaded half-tube 29 are buckled together, and the fixing block 25 is fixedly arranged on the upper outer wall of the upper threaded half-tube 28; The upper threaded half tube 28 and the lower threaded half tube 29 are symmetrically provided with threaded blocks A30 in the middle of the side walls on both sides in the length direction. The threaded blocks A30 of the upper threaded half tube 28 and the lower threaded half tube 29 can be symmetrically fitted and arranged. The threaded blocks A30 of the upper threaded half tube 28 and the lower threaded half tube 29 are fixedly connected by bolts.

[0025] The two ends of the fixed block 25 are symmetrically fixed with threaded blocks B31, and the two ends of the lower surface of the sliding plate 7 are provided with positioning grooves 32. The upper parts of the fixed block 25 and the threaded blocks B31 are tightly inserted into the positioning grooves 32, and the threaded blocks B31 are fixedly connected to the sliding plate 7 by bolts.

[0026] The asphalt sample 5 includes an asphalt sample body 33 and a test mold end mold 34. The asphalt sample body 33 is made by an asphalt 8-shaped test mold. The test mold end mold 34 is a part of the asphalt 8-shaped test mold. Two test mold end molds 34 are provided. The two ends of the asphalt sample body 33 are clamped in the inner cavity at the end of the test mold end mold 34. The asphalt 8-shaped test mold is a prior art, and its specific structure is not described in detail here. A fixing hole 35 is provided at the front end of the test mold end mold 34. The test mold end molds 34 at both ends of the asphalt sample body 33 are respectively mounted on the fixing column A3 and the fixing column B16 through the fixing holes 35. The positioning block 22 on the upper part of the support ring 21 can limit the test mold end mold 34 to prevent the test mold end mold 34 from rotating on the fixing column A3 and the fixing column B16, thereby preventing the asphalt sample body 33 from bending.

[0027] The control center 6 is arranged on one side of the water bath 1, the pressure sensor 20 is electrically connected to the control center 6, and a motor box 36 is provided on the other side of the water bath 1. The low-speed motor 12 is arranged in the middle of the inner cavity of the motor box 36, and a reducer 37 is connected to the upper part of the low-speed motor 12. One end of the precision screw 11 is rotatably arranged in the motor box 36, and the reducer 37 is transmission-connected to the precision screw 11 through a plurality of meshing gears 38. The gears 38 are arranged in the motor box 36, and the two precision screws 11 are arranged to rotate in the same direction.

[0028] The side walls of the water bath 1 on both sides in the length direction are symmetrically provided with slide rail grooves A39, and the side walls of the water bath 1 on both sides in the length direction are symmetrically provided with slide rail grooves B40, and the slide rail grooves A39 are arranged on the upper part of the slide rail grooves B40; A glass baffle A41 is slidably inserted in the slide rail groove A39, and a glass baffle B42 is slidably inserted in the slide rail groove B40. One end of the glass baffle A41 can be slidably set on one end of the water bath box 1, and one end of the glass baffle B42 can be slidably set on the other end of the water bath box 1, thereby closing the water bath box 1.

[0029] A waterway box 43 is provided at the bottom of the water bath 1. A heater 44, a water chiller 45 and a water pump 46 are provided in the inner cavity of the waterway box 43 from left to right. The heater 44, the water chiller 45 and the water pump 46 are connected by pipelines. The water pump 46 is connected to the inner cavity of the water bath 1 by pipelines. The heater 44 is connected to the inner cavity of the water bath 1 by pipelines. A flow stabilizing plate 47 is transversely fixedly disposed in the middle of the inner cavity of the water bath 1 , and the side walls of the flow stabilizing plate 47 are fixedly connected to the inner wall of the water bath 1 . The flow stabilizing plate 47 is a mesh plate structure and is disposed at the lower part of the stretching component 4 .

[0030] Working principle of the present invention: Clean water is injected into the water bath 1 so that the clean water soaks the upper part of the stretching member 4, the glass baffle A41 and the glass baffle B42 close the water bath 1, the water pump 46 is started, the clean water in the water bath 1 starts to circulate, the heater 44 or the chiller 45 is started, and the clean water temperature in the water bath 1 is controlled at a preset detection temperature; Among them, the flow stabilizer 47 can stabilize the water flow in the water bath 1, making the water surface in the water bath 1 stable, the glass baffle A41 and the glass baffle B42 close the water bath 1 to prevent the temperature loss of the clean water in the water bath 1, and the upper threaded half pipe 28 and the lower threaded half pipe 29 of the sliding sleeve 24 are buckled together to facilitate the disassembly and assembly of the stretching component 4.

[0031] A plurality of asphalt samples 5 with different properties are made using an asphalt 8-shaped test mold. The asphalt 8-shaped test mold after being poured with asphalt is placed in a water bath device to condense the asphalt sample 5 into shape.

[0032] After the temperature of the clean water in the water bath 1 reaches the preset temperature, the low-speed motor 12 rotates in the opposite direction to move the stretching component 4 to one end of the inner cavity of the water bath 1 close to the fixed column A3, and then the slider 17 is placed at the end of the sliding groove 13 to prevent the top block 18 from contacting the pressure sensor 20. At the same time, the distance between the fixed column A3 and the fixed column B16 is adjusted by the sliding sleeve 24 and the threaded sleeve 23, so that the distance between the two ends of the asphalt sample 5 is the same as the distance between the fixed column A3 and the fixed column B16, and then the threaded sleeve 23 and the sliding sleeve 24 are fixed by the fixing bolts 27.

[0033] The fixing holes 35 of the test mold end molds 34 at both ends of the asphalt sample 5 are respectively mounted on the corresponding fixing columns A3 and B16. The bottom of the test mold end mold 34 is placed on the upper part of the support ring 21. The positioning block 22 can position the test mold end mold 34 to prevent the asphalt sample body 33 from bending. Due to the characteristics of asphalt, the asphalt sample body 33 is difficult to recover when bent, thereby preventing the bent asphalt sample body 33 from touching the pressure sensor 20 through the top block 18 when stretched, thereby affecting the detection effect.

[0034] The low-speed motor 12 is started, and the low-speed motor 12 slowly drives the precision screw 11 to rotate through the reducer 37, and the precision screw 11 drives the sliding component 8 to slowly move away from the fixed column A3. When the top block 18 moves to the pressure sensor 20 and contacts the pressure sensor 20, and the pressure sensor 20 generates a pressure signal, the control center 6 starts to record the displacement data of the sliding component 8 and the pressure data of the pressure sensor 20; All the asphalt sample bodies 33 begin to stretch. When any of the asphalt sample bodies 33 breaks due to stretching, the pressure sensor 20 of the sliding component 8 connected thereto cannot detect the tension exerted on the asphalt sample body 33. The control center 6 stops recording the displacement distance of the sliding component 8 and the pressure data of the pressure sensor 20 and saves them.

[0035] When all the asphalt sample bodies 33 are tensilely broken, the control center 6 controls the low-speed motor 12 to shut down, and the test is finished. The staff evaluates the performance of the asphalt sample body 33 based on the tensile displacement data and the tensile force data of the asphalt sample body 33 recorded by the control center 6.

[0036] 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.

[0037] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A force-ductility instrument for asphalt materials, characterized in that: The invention comprises a water bath (1), wherein a fixing plate (2) is fixedly provided at one end of the inner cavity of the water bath (1) transversely along the width direction of the water bath (1), a plurality of evenly distributed fixing columns A (3) are fixedly provided at the upper part of the fixing plate (2) along the width direction of the water bath (1), a stretching component (4) is provided in the inner cavity of the water bath (1) transversely along the width direction of the water bath (1), the stretching component (4) is movably provided along the length direction of the water bath (1), a plurality of evenly distributed asphalt samples (5) are provided between the fixing column A (3) and the stretching component (4), one end of the asphalt sample (5) is sleeved on the fixing column A (3), and the other end of the asphalt sample (5) is sleeved on the stretching component (4), the stretching component (4) is connected to a control center (6), and the control center (6) controls the stretching component (4) to stretch the asphalt sample (5), thereby realizing an elongation test of the asphalt sample (5) and detecting the tensile force borne by the asphalt sample (5) during stretching, so as to evaluate the deformation resistance and durability of the asphalt sample (5); The stretching component (4) comprises a sliding plate (7), a sliding assembly (8) and an adjusting assembly (9); the upper surface of the sliding plate (7) is provided with a plurality of slide rail slot blocks (10) arranged in a one-to-one correspondence with the fixed column A (3); the sliding assembly (8) is provided with a plurality of slide rail slot blocks (10); the sliding assembly (8) is arranged in a one-to-one correspondence with the slide rail slot blocks (10); the sliding assembly (8) is slidably arranged in the slide rail slot blocks (10); the sliding assembly (8) is slidably arranged along the length direction of the water bath (1); and two adjusting assemblies (9) are provided, and the adjusting assemblies (9) are symmetrically arranged at both ends of the bottom of the sliding plate (7); The inner cavity of the water bath (1) is symmetrically provided with a precision screw (11) along the length direction of the water bath (1), and the two ends of the precision screw (11) are rotatably arranged on the side walls of the water bath (1) on both sides in the width direction. A low-speed motor (12) is arranged at one end of the precision screw (11), and the adjusting component (9) is threadedly sleeved on the precision screw (11). The low-speed motor (12) drives the precision screw (11) to rotate, and the stretching component (4) is moved along the length direction of the water bath (1) through the cooperation of the precision screw (11) and the adjusting component (9).

2. The force-ductility instrument for asphalt materials according to claim 1, characterized in that: The bottom wall of the slide rail slot block (10) is provided with a slide groove (13), the upper part of the slide rail slot block (10) is provided with a clearance groove A (14), the slide groove (13) and the clearance groove A (14) are connected, and the slide groove (13) and the clearance groove A (14) are closed at one end close to the fixed column A (3); The sliding plate (7) is provided with a plurality of air avoidance grooves B (15) arranged one-to-one corresponding to the slide rail groove blocks (10), the air avoidance grooves B (15) are arranged directly below the inner cavity of the air avoidance grooves A (14), and the sliding grooves (13), the air avoidance grooves A (14) and the air avoidance grooves B (15) are arranged in an overlapping manner; The sliding assembly (8) comprises a fixed column B (16), a sliding block (17) and a top block (18), wherein the fixed column B (16) is fixedly arranged at the upper middle end of the sliding block (17), and one end of the top block (18) is threadedly fixedly connected to the middle part of a side wall of a lower surface of the sliding block (17); The sliding block (17) is slidably arranged in the sliding groove (13), the fixing column B (16) is arranged in the air-avoiding groove A (14), the top block (18) is arranged in the air-avoiding groove B (15), the fixing column B (16) and the air-avoiding groove A (14) are arranged to avoid air, and the top block (18) and the air-avoiding groove B (15) are arranged to avoid air; The lower surface of the sliding plate (7) is provided with a plurality of mounting plates (19) arranged one-to-one in correspondence with the air-avoiding grooves B (15); the mounting plates (19) are fixedly arranged on a side wall of the sliding plate (7) close to the fixed column A (3); the mounting plates (19) are fixedly provided with a pressure sensor (20); and the front end of the pressure sensor (20) can be arranged in close contact with the top block (18); The wall surfaces on which the slider (17) and the sliding groove (13) are slidably arranged are smoothly arranged, and the wall surfaces on which the slider (17) and the sliding plate (7) are slidably arranged are smoothly arranged.

3. The force-ductility instrument for asphalt materials according to claim 2, characterized in that: The outer wall fixing sleeves of the fixing column A (3) and the fixing column B (16) are provided with support rings (21); the support rings (21) of the fixing column A (3) and the fixing column B (16) are arranged on the same plane of the inner cavity of the water bath (1); the lower surface of the support ring (21) arranged on the fixing column B (16) is spaced from the upper surface of the slide rail groove block (10); A positioning block (22) is fixedly provided on the upper surface of the support ring (21); the positioning block (22) is a U-shaped ring structure; the fixing column A (3) and the fixing column B (16) are arranged in the inner cavity of the positioning block (22); and the mouths of the positioning block (22) arranged on the upper parts of the fixing column A (3) and the fixing column B (16) are arranged relative to each other.

4. The force-ductility instrument for asphalt materials according to claim 2, characterized in that: The adjusting assembly (9) comprises a threaded sleeve (23), a sliding sleeve (24) and a fixed block (25); the threaded sleeve (23) is threadedly sleeved on the precision lead screw (11); the sliding sleeve (24) is slidably sleeved on the threaded sleeve (23); the fixed block (25) is fixedly arranged on the outer surface of the sliding sleeve (24); and the fixed block (25) is threadedly fixedly connected to the lower surface of the sliding plate (7); The threaded sleeve (23) is fixedly provided with retaining rings (26) at both ends, and the retaining rings (26) can prevent the sliding sleeve (24) from being separated from the threaded sleeve (23); A threaded hole is provided in the middle of the upper surface of the fixing block (25), the threaded hole is communicated with the sliding sleeve (24), a fixing bolt (27) is threadedly connected to the threaded hole, the end of the fixing bolt (27) is arranged on the upper surface of the sliding plate (7), and the front end of the fixing bolt (27) can penetrate the sliding sleeve (24) and be pressed on the outer wall of the threaded sleeve (23).

5. The force-ductility instrument for asphalt materials according to claim 4, characterized in that: The threaded sleeve (23) comprises an upper threaded half-tube (28) and a lower threaded half-tube (29), the upper threaded half-tube (28) and the lower threaded half-tube (29) are buckled together, and the fixing block (25) is fixedly arranged on the upper outer wall of the upper threaded half-tube (28); The upper threaded half-tube (28) and the lower threaded half-tube (29) are symmetrically provided with threaded blocks A (30) at the middle of the side walls on both sides in the length direction. The threaded blocks A (30) of the upper threaded half-tube (28) and the lower threaded half-tube (29) can be symmetrically fitted and arranged. The threaded blocks A (30) of the upper threaded half-tube (28) and the lower threaded half-tube (29) are fixedly connected by bolts.

6. The force-ductility instrument for asphalt materials according to claim 4, characterized in that: The two ends of the fixed block (25) are symmetrically fixed with threaded blocks B (31), and the two ends of the lower surface of the sliding plate (7) are provided with positioning grooves (32). The upper parts of the fixed block (25) and the threaded block B (31) are tightly inserted into the positioning grooves (32), and the threaded block B (31) and the sliding plate (7) are fixedly connected by bolts.

7. The force-ductility instrument for asphalt materials according to claim 3, characterized in that: The asphalt sample (5) comprises an asphalt sample body (33) and a test mold end mold (34), and two ends of the asphalt sample body (33) are clamped in the inner cavity at the end of the test mold end mold (34); A fixing hole (35) is provided at the front end of the test mold end mold (34). The test mold end molds (34) at both ends of the asphalt sample body (33) are respectively mounted on the fixing column A (3) and the fixing column B (16) through the fixing holes (35). The positioning block (22) on the upper part of the support ring (21) can limit the test mold end mold (34) to prevent the test mold end mold (34) from rotating on the fixing column A (3) and the fixing column B (16), thereby preventing the asphalt sample body (33) from bending.

8. The force-ductility instrument for asphalt materials according to claim 2, characterized in that: The control center (6) is arranged on one side of the water bath (1), the pressure sensor (20) is electrically connected to the control center (6), a motor box (36) is arranged on the other side of the water bath (1), the low-speed motor (12) is arranged in the middle of the inner cavity of the motor box (36), the upper part of the low-speed motor (12) is connected to a reducer (37), one end of the precision screw (11) is rotatably arranged in the motor box (36), the reducer (37) is transmission-connected to the precision screw (11) through a plurality of meshing gears (38), the gears (38) are arranged in the motor box (36), and the two precision screws (11) are arranged to rotate in the same direction.

9. The force-ductility instrument for asphalt materials according to claim 1, characterized in that: The side walls of the water bath (1) on both sides in the length direction are symmetrically provided with slide rail grooves A (39), and the side walls of the water bath (1) on both sides in the length direction are symmetrically provided with slide rail grooves B (40), and the slide rail grooves A (39) are arranged on the upper part of the slide rail grooves B (40); A glass baffle A (41) is slidably inserted into the slide rail groove A (39), and a glass baffle B (42) is slidably inserted into the slide rail groove B (40). One end of the glass baffle A (41) can be slidably arranged on one end of the water bath (1), and one end of the glass baffle B (42) can be slidably arranged on the other end of the water bath (1), thereby closing the water bath (1).

10. The force-ductility instrument for asphalt materials according to claim 1, characterized in that: A water channel box (43) is provided at the bottom of the water bath (1). The inner cavity of the water channel box (43) is provided with a heater (44), a water chiller (45) and a water pump (46) from left to right. The heater (44), the water chiller (45) and the water pump (46) are connected via a pipeline. The water pump (46) is connected to the inner cavity of the water bath (1) via a pipeline. The heater (44) is connected to the inner cavity of the water bath (1) via a pipeline. A flow stabilizing plate (47) is fixedly disposed transversely in the middle of the inner cavity of the water bath (1); the side walls of the flow stabilizing plate (47) are fixedly connected to the inner wall of the water bath (1); the flow stabilizing plate (47) is a mesh plate structure; and the flow stabilizing plate (47) is disposed at the bottom of the stretching component (4).

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