A device for testing the elongation of asphalt

Abstract

This utility model provides an asphalt elongation testing device, comprising: a machine body, a water tank and a stretching mechanism disposed on the machine body, a lifting mechanism, a fixed plate, a movable plate disposed in the water tank, and a cleaning component detachably connected to the movable plate. The fixed plate and the movable plate are used to place asphalt test molds. A guide groove is provided on the inner side of one end of the water tank. The lifting mechanism includes a threaded rod and a slider disposed in the guide groove. The slider is threadedly connected to the threaded rod and slides in cooperation with the guide groove. The stretching mechanism drives the movable plate to move laterally. The cleaning component can clean the water tank as the movable plate moves. By raising the position of the fixed plate through the lifting mechanism, the cleanable range of the cleaning component can be increased, which helps to reduce the manual cleaning burden, reduce the maintenance workload of the equipment, and improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of asphalt testing technology, and in particular to an asphalt elongation testing device. Background Technology

[0002] Asphalt used in highway engineering needs to undergo ductility testing. Asphalt ductility testing equipment can measure the fluidity of asphalt at a specific temperature, that is, the length that an asphalt sample can extend under a certain tensile force. By measuring the ductility of asphalt, the quality and applicability of asphalt can be evaluated to ensure that it meets the technical requirements of highway engineering.

[0003] Currently, mainstream asphalt stretching apparatuses typically include a frame, a constant-temperature water bath, a fixed plate and a sliding plate for mounting the specimen, a tensioning mechanism for driving the sliding plate, and a motor. During the test, the prepared asphalt specimen is mounted on the metal columns of the fixed plate and the sliding plate, and the side mold is removed, allowing the specimen to be completely immersed in the constant-temperature water bath. The equipment is started, and the motor drives the sliding plate to move at a standard speed through the tensioning mechanism, stretching the specimen until it breaks. The elongation data at fracture is recorded.

[0004] Debris generated from sample breakage settles at the bottom of the tank, affecting not only equipment operation and data accuracy but also causing cross-contamination. To ensure testing accuracy, operators need to frequently clean the constant temperature water bath, which increases maintenance workload and reduces testing efficiency. Utility Model Content

[0005] The purpose of this invention is to provide an asphalt elongation testing device to solve the above-mentioned technical problems in the prior art.

[0006] According to the present invention, an asphalt elongation testing device includes: body; A water tank is provided on the machine body, and a guide groove is provided on the inner side of one end of the tank. The lifting mechanism includes a threaded rod and a slider disposed in the guide groove. The threaded rod is vertically disposed and rotatably mounted on the water tank via a bearing seat. The slider is threadedly connected to the threaded rod and slides in cooperation with the guide groove. A fixing plate is located inside the water tank and is fixedly connected to the slider; A movable plate located within the water tank; A cleaning component, detachably connected to the movable plate, is used for cleaning the water tank; A stretching mechanism, which is disposed on the machine body and connected to the moving plate, is used to drive the moving plate to move laterally.

[0007] In one embodiment of the present invention, the top end of the threaded rod is connected to a handle or motor for driving its rotation.

[0008] In one embodiment of this utility model, the water tank is provided with a horizontally extending scale.

[0009] In one embodiment of this utility model, two tensioning mechanisms are provided and distributed on opposite sides of the water tank, and the two tensioning mechanisms are respectively connected to opposite ends of the moving plate.

[0010] In one embodiment of this utility model, the stretching mechanism includes a linear drive device and a connecting frame. The linear drive device is arranged laterally on the machine body. One end of the connecting frame is fixedly connected to the linear drive device, and the other end extends into the water tank to connect to the moving plate.

[0011] In one embodiment of the present invention, the connecting frame is provided with a cantilever extending vertically into the water tank, the bottom end of the cantilever is provided with a base plate for supporting the movable plate, the end of the movable plate is provided with a concave groove that slides with the cantilever, and the movable plate is configured to slide up and down along the cantilever.

[0012] In one embodiment of this utility model, a snap-fit ​​structure for lateral snap-fit ​​engagement is provided between the fixed plate and the movable plate.

[0013] In one embodiment of the present invention, a first slot is provided on the side of the movable plate near the fixed plate, and a locking block adapted to the first slot is provided on the side of the fixed plate near the movable plate; a second slot is provided on the side of the movable plate away from the fixed plate, and an mounting block adapted to the second slot is provided on the cleaning component.

[0014] In one embodiment of this utility model, the first slot and the second slot are symmetrically arranged on opposite sides of the movable plate, and the mounting block is also adapted to the first slot.

[0015] In one embodiment of this utility model, the cleaning component is a scraper, which is attached to the bottom surface and side wall of the water tank.

[0016] At least one beneficial effect of this utility model is: The asphalt ductility testing device includes a body, a water tank, and a stretching mechanism. The water tank contains a lifting mechanism, a fixed plate connected to the lifting mechanism, and a movable plate connected to the stretching mechanism, as well as a cleaning component detachably connected to the movable plate. The fixed plate and the movable plate are used to hold asphalt test molds. The stretching mechanism drives the movable plate to move laterally, and the cleaning component can clean the water tank as the movable plate moves. Raising the position of the fixed plate by the lifting mechanism increases the cleanable range of the cleaning component, which helps to reduce the burden of manual cleaning, reduce the maintenance workload of the equipment, and improve work efficiency.

[0017] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the asphalt elongation testing device provided by this utility model; Figure 2 This is an exploded view of an embodiment of the asphalt elongation testing device provided by this utility model; Figure 3 This is a partial structural diagram of the moving plate and the tensile mechanism of an embodiment of the asphalt elongation testing device provided by this utility model; Figure 4 This is a schematic diagram of the structure of the fixed plate and the movable plate of an embodiment of the asphalt elongation testing device provided by this utility model; Figure 5 This is a schematic diagram of the fixed plate and the movable plate cooperating in one embodiment of the asphalt elongation testing device provided by this utility model; Figure 6 This is a schematic diagram of the fixed plate and the movable plate in the raised state of an embodiment of the asphalt elongation testing device provided by this utility model; Figure 7 This is a schematic diagram of the moving plate and cleaning component of an embodiment of the asphalt elongation testing device provided by this utility model.

[0020] The reference numerals and their corresponding component names in the figure are as follows: 1. Fuselage; 11. Track; 2. Water tank; 21. Guide groove; 22. Ruler; 23. Water pipe; 3. Lifting mechanism; 31. Threaded rod; 32. Sliding block; 33. First motor; 34. Limit plate; 4. Fixing plate; 41. Clip 5. Movable plate; 51. Concave groove; 501. First slot; 502. Second slot; 6. Cleaning components; 61. Mounting blocks; 7. Tensioning mechanism; 71. Connecting frame; 711. Upright pole; 712. Top rod; 713. Cantilever; 714. Base plate; 72. Linear drive device; 721. Lead screw; 722. Moving block; 723. Second motor. Detailed Implementation

[0021] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0022] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0023] In this article, terms such as "up," "down," "front," "back," "left," "right," "top," and "bottom" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0024] In this article, "first," "second," etc., are used only to distinguish one another, and not to indicate degree of importance, order, or prerequisite for each other.

[0025] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0026] In this document, unless otherwise stated, "a plurality of" means two or more, and the terms "installed," "connected," and "joined" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection. Those skilled in the art will understand the specific meaning of the above terms in this document based on the specific circumstances.

[0027] Examples of various specific processes and materials are provided in this document, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0028] Wherever possible, the various aspects and features described and illustrated in this specification may be applied individually, and these individual aspects may serve as the subject matter of a divisional application.

[0029] like Figures 1 to 7 As shown, this utility model provides an asphalt elongation testing device, including a machine body 1, a water tank 2, a lifting mechanism 3, a fixed plate 4, a moving plate 5, a cleaning component 6, and a stretching mechanism 7.

[0030] Water tank 2 is installed on the body 1, with an open top. Water pipe 23 is installed on water tank 2 for water inlet or outlet. A guide groove 21 is provided on the inner side of one end of water tank 2 for installing lifting mechanism 3.

[0031] The lifting mechanism 3 includes a threaded rod 31 and a slider 32 disposed within a guide groove 21. The threaded rod 31 is vertically positioned and rotatably mounted on the water tank 2 via a bearing seat, which is fixedly connected to the water tank 2. The threaded rod 31 can rotate around its own axis. The slider 32 is threadedly connected to the threaded rod 31 and slides within the guide groove 21. The slider 32 has a threaded hole adapted to the threaded rod 31. The inner wall of the guide groove 21 is configured to prevent the slider 32 from rotating, thus guiding and limiting the slider 32. When the threaded rod 31 rotates under external force, it can drive the slider 32 to move up and down within the guide groove 21.

[0032] The fixed plate 4 is located inside the water tank 2 and is fixedly connected to the slider 32. The slider 32 can drive the fixed plate 4 to move up and down. The movable plate 5 is located inside the water tank 2 and can move within the water tank 2. Positioning posts for fixing the trial mold are respectively provided on the fixed plate 4 and the movable plate 5. After adjusting the fixed plate 4 and the movable plate 5 to be at the same height and at an appropriate distance, the trial mold can be installed.

[0033] The cleaning component 6 is detachably connected to the movable plate 5. The cleaning component 6 contacts the inner surface of the sink 2 and is used to clean the sink 2.

[0034] A stretching mechanism 7 is disposed on the machine body 1 and connected to a movable plate 5, used to drive the movable plate 5 to move laterally, thereby stretching the asphalt in the mold. The stretching mechanism 7 is configured to drive the movable plate 5 to move laterally to opposite ends of the water tank 2. For clarity and conciseness, the length direction of the water tank 2 is defined as transverse.

[0035] The cleaning component 6 can clean the inner wall of the water tank 2 as it moves along with the moving plate 5, achieving automatic cleaning. This reduces the burden of manual cleaning, lowers the maintenance workload of the equipment, and improves work efficiency. The cleaning component 6 is detachably connected to the moving plate 5, and can be installed only when cleaning the water tank 2 is required.

[0036] After the fixed plate 4 is raised by rotating the threaded rod 31, the movable plate 5 can move laterally to below the fixed plate 4, thereby increasing the cleanable range of the cleaning component 6.

[0037] In some embodiments, the top end of the threaded rod 31 is connected to a handle or motor for driving its rotation, which can drive the threaded rod 31 to rotate manually or electrically.

[0038] like Figure 1 In one embodiment shown, a first motor 33 is connected to the top of the threaded rod 31. The first motor 33 is fixedly connected to the top of the water tank 2 via a fixing seat. The output shaft is coaxially connected to the threaded rod 31, making it convenient to use.

[0039] In some implementations, such as Figure 2As shown, the water tank 2 is equipped with a horizontally extending scale 22. The scale 22 is located at the top of one side of the water tank 2 and is used to measure the moving distance of the moving plate 5 and calculate the extension length of the asphalt. The connecting bracket 71 is close to the scale 22, and the data of the scale 22 can be read according to the position of the connecting bracket 71.

[0040] In some implementations, such as Figure 2 and Figure 3 As shown, two tensioning mechanisms 7 are provided and distributed on opposite sides of the water tank 2. The two tensioning mechanisms 7 are respectively connected to opposite ends of the moving plate 5. The tensioning mechanisms 7 on both sides drive the moving plate 5 simultaneously, so that the forces on both ends of the moving plate 5 are balanced, ensuring the stability of the moving plate 5 and the accuracy of the data.

[0041] In some implementations, such as Figure 3 As shown, the stretching mechanism 7 includes a linear drive device 72 and a connecting frame 71. The linear drive device 72 is horizontally arranged on the machine body 1. One end of the connecting frame 71 is fixedly connected to the linear drive device 72, and the other end extends into the water tank 2 to connect to the moving plate 5. Specifically, the connecting frames 71 of the two stretching mechanisms 7 are respectively connected to the opposite ends of the moving plate 5. The linear drive devices 72 on both sides work synchronously, driving the moving plate 5 to move laterally within the water tank 2.

[0042] In some implementations, such as Figure 3 As shown, the connecting frame 71 includes a vertical rod 711, a top rod 712, and a cantilever 713 connected in sequence to form a portal-shaped structure. The bottom end of the vertical rod 711 is connected to a linear drive device 72, the top rod 712 is higher than the water tank 2, and the cantilever 713 extends into the water tank 2 and is connected to a moving plate 5. A gap is left between the surface of the connecting frame 71 and the surface of the water tank 2 to avoid friction.

[0043] In some implementations, such as Figure 3 As shown, the connecting frame 71 is provided with a cantilever 713 extending vertically into the water tank 2, and a base plate 714 for supporting the movable plate 5 is provided at the bottom end of the cantilever 713. The base plate 714 extends horizontally from the cantilever 713 and is supported on the bottom of the movable plate 5. The end of the movable plate 5 is provided with a concave groove 51 that slides with the cantilever 713, and the movable plate 5 is configured to slide up and down along the cantilever 713. The cantilever 713 extends vertically and can guide and position the movable plate 5. When the movable plate 5 is supported on the base plate 714 under the action of gravity...

[0044] In some embodiments, the fixed plate 4 can be adjusted to the same height as the movable plate 5 by the lifting mechanism 3 to install the asphalt test mold.

[0045] In some embodiments, the length of the fixing plate 4 is less than the width of the water tank 2, and gaps are left between the opposite ends of the fixing plate 4 and the side walls of the water tank 2 to avoid the connecting frame 71. After the fixing plate 4 is raised, the connecting frame 71 can enter the gaps between the opposite ends of the fixing plate 4 so that the moving plate 5 can reach below the fixing plate 4.

[0046] In some embodiments, a limiting structure for limiting the slider 32 may be provided on the threaded rod 31 or in the guide groove 21, such as a shoulder structure provided on the threaded rod 31. When the fixed plate 4 descends to the same height as the moving plate 5, the slider 32 is limited by the limiting structure.

[0047] In one example, a limiting plate 34 for limiting the slider 32 is fixed at the bottom of the threaded rod 31 or the bottom of the guide groove 21. When the slider 32 moves to abut against the limiting plate 34, the height of the fixed plate 4 is the same as the height of the movable plate 5 supported on the base plate.

[0048] In some embodiments, a snap-fit ​​structure is provided between the fixed plate 4 and the movable plate 5 for lateral snap-fit ​​engagement. When the fixed plate 4 and the movable plate 5 are at the same height, the tensioning mechanism 7 drives the movable plate 5 to move laterally, and it can snap-fit ​​or separate from the fixed plate 4 through the snap-fit ​​structure.

[0049] In some implementations, such as Figure 4 and Figure 5 As shown, a first slot 501 is provided on the side of the movable plate 5 near the fixed plate 4, and a locking block 41 adapted to the first slot 501 is provided on the side of the fixed plate 4. When the fixed plate 4 and the movable plate 5 are at the same height, the tensioning mechanism 7 drives the movable plate 5 to move towards the fixed plate 4, allowing the locking block 41 to be inserted into the first slot 501, thus connecting the fixed plate 4 and the movable plate 5. After connection, they are positioned relative to each other, which helps in the installation of the trial mold. The tensioning mechanism 7 drives the movable plate 5 away from the fixed plate 4, allowing the locking block 41 to disengage from the first slot 501. One or more first slots 501 can be provided on the movable plate 5, and one or more locking blocks 41 can be provided on the fixed plate 4 accordingly.

[0050] When the fixed plate 4 and the movable plate 5 are connected, the lifting mechanism 3 drives the fixed plate 4 to move up and down, which in turn drives the movable plate 5 to slide up and down along the cantilever 713.

[0051] When using an asphalt ductility testing device, such as Figure 6 As shown, the fixed plate 4 and the movable plate 5 are first raised to a level higher than the water level in the water tank 2 by the lifting mechanism 3, and then the operator installs the trial mold; as shown Figure 7As shown, the fixed plate 4 and the movable plate 5 are lowered by the lifting mechanism 3 to immerse the mold in water. Then, the stretching mechanism 7 is activated to drive the movable plate 5 to move laterally away from the fixed plate 4, causing the asphalt in the mold to extend, and the data at the time of asphalt fracture is recorded. After completion, the stretching mechanism 7 drives the movable plate 5 to reset and insert it into the fixed plate 4. Then, the fixed plate 4 and the movable plate 5 are raised above the water level by the lifting mechanism 3, and the operator disassembles the mold.

[0052] During operation, operators do not need to put their hands into the water in tank 2, making the operation more convenient and avoiding skin injury.

[0053] In some implementations, such as Figure 7 As shown, a second slot 502 is provided on the side of the movable plate 5 away from the fixed plate 4, and a mounting block 61 adapted to the second slot 502 is provided on the cleaning component 6. The mounting block 61 is inserted into the second slot 502, so that the cleaning component 6 is mounted on the movable plate 5. After the cleaning component 6 is installed, the tensioning mechanism 7 drives the movable plate 5 to move away from the fixed plate 4, pushing the cleaning component 6 to clean the inner surface of the water tank 2. One or more second slots 502 can be provided on the movable plate 5, and one or more mounting blocks 61 can be provided on the cleaning component 6 accordingly.

[0054] In some embodiments, the first slot 501 and the second slot 502 are symmetrically arranged on opposite sides of the moving plate 5, and the mounting block 61 of the cleaning component 6 is also adapted to the first slot 501. The cleaning component 6 can be installed on the side of the moving plate 5 away from the fixed plate 4, or it can be installed on the side of the moving plate 5 close to the fixed plate 4.

[0055] The lifting mechanism 3 raises the fixed plate 4, and the cleaning component 6 is installed on the side of the moving plate 5 near the fixed plate 4. The stretching mechanism 7 drives the moving plate 5 to move closer to the fixed plate 4, which can clean the area below the fixed plate 4.

[0056] In some embodiments, the cleaning component 6 is a scraper that abuts against the bottom surface and side walls of the water tank 2. Specifically, the mounting block 61 is located on one side of the scraper, and the scraper is vertically mounted on the movable plate 5. The bottom of the scraper abuts against the bottom surface of the water tank 2, and the opposite sides of the scraper abut against the two side walls of the water tank 2, enabling thorough cleaning of the surface of the water tank 2. The scraper may be made of a flexible, wear-resistant material, such as rubber. Sealing lips may be provided on the bottom and opposite sides of the scraper to ensure a tight fit with the bottom surface and side walls of the water tank 2, achieving effective scraping.

[0057] In some implementations, such as Figure 2As shown, the linear drive device 72 includes a lead screw 721 horizontally mounted on the machine body 1, a movable block 722 threadedly connected to the lead screw 721, and a second motor 723 for driving the lead screw 721 to rotate. A track 11 parallel to the lead screw 721 is provided on the machine body 1, and the movable block 722 is slidably fitted onto the track 11. A connecting frame 71 is fixedly connected to the movable block 722.

[0058] Specifically, the track 11 has a long groove structure, and both the lead screw 721 and the moving block 722 are set in the track 11. The two ends of the lead screw 721 can be supported by bearing seats, and the lead screw 721 can rotate around its own axis. The second motor 723 is fixedly connected to the machine body 1, and its output shaft is driven by the lead screw 721 to drive the lead screw 721 to rotate. The track 11 limits the movement of the moving block 722. Driven by the lead screw 721, the moving block 722 moves along the track 11, and drives the connecting frame 71 and the moving plate 5 to move.

[0059] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein. The scope of the present invention is defined by the appended claims.

Claims

1. A device for testing the elongation of asphalt, characterized in that, include: body; A water tank is provided on the machine body, and a guide groove is provided on the inner side of one end of the tank. The lifting mechanism includes a threaded rod and a slider disposed in the guide groove. The threaded rod is vertically disposed and rotatably mounted on the water tank via a bearing seat. The slider is threadedly connected to the threaded rod and slides in cooperation with the guide groove. A fixing plate is located inside the water tank and is fixedly connected to the slider; A movable plate located within the water tank; A cleaning component, detachably connected to the movable plate, is used for cleaning the water tank; A stretching mechanism, which is disposed on the machine body and connected to the moving plate, is used to drive the moving plate to move laterally.

2. The asphalt ductility testing device according to claim 1, characterized in that, The top of the threaded rod is connected to a handle or motor for driving its rotation.

3. The asphalt ductility testing device according to claim 1, characterized in that, The water tank is equipped with a horizontally extending scale.

4. The asphalt ductility testing device according to claim 1, characterized in that, Two tensioning mechanisms are provided and distributed on opposite sides of the water tank, with each tensioning mechanism connected to opposite ends of the moving plate.

5. The asphalt ductility testing device according to claim 1, characterized in that, The stretching mechanism includes a linear drive device and a connecting frame. The linear drive device is arranged laterally on the machine body. One end of the connecting frame is fixedly connected to the linear drive device, and the other end extends into the water tank to connect to the moving plate.

6. The asphalt elongation testing device according to claim 5, characterized in that, The connecting frame is provided with a cantilever that extends vertically into the water tank. The bottom end of the cantilever is provided with a base plate for supporting the movable plate. The end of the movable plate is provided with a concave groove that slides with the cantilever. The movable plate is configured to slide up and down along the cantilever.

7. The asphalt ductility testing device according to claim 1, characterized in that, A snap-fit ​​structure is provided between the fixed plate and the movable plate for lateral engagement.

8. The asphalt ductility testing device according to claim 1, characterized in that, The movable plate is provided with a first slot on the side near the fixed plate, and the fixed plate is provided with a locking block that matches the first slot on the side near the movable plate. The movable plate has a second slot on the side away from the fixed plate, and the cleaning component has a mounting block that matches the second slot.

9. The asphalt ductility testing device according to claim 8, characterized in that, The first card slot and the second card slot are symmetrically arranged on opposite sides of the movable plate, and the mounting block is also adapted to the first card slot.

10. The bitumen ductility testing device according to any one of claims 1 to 9, characterized in that, The cleaning component is a scraper, which is attached to the bottom and side walls of the water tank.

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