Energy-saving and efficient asphalt testing equipment

Abstract

The invention discloses energy-saving and efficient asphalt testing equipment, and belongs to the field of asphalt material testing equipment. According to the technical scheme, the energy-saving and efficient asphalt testing equipment comprises an operation handle, the tail end of the operation handle is fixedly connected with a supporting frame, the lower end of the supporting frame is rotationally connected with a tool apron assembly, the two ends of the tool apron assembly are symmetrically provided with installation grooves used for installing blades, and the inner wall of each installation groove is provided with an electric heating assembly and a heat exchange assembly; the tool apron assembly rotates, so that the mounting groove on one side is located at the test station, and the mounting groove on the other side is located at the cleaning station; the test station and the cleaning station are switched through rotation of the tool apron assembly, waste heat recycling is achieved in cooperation with the electric heating assembly and the heat exchange assembly, blade residues are automatically cleaned through the cleaning mechanism, and the problems that a traditional device is high in energy consumption, low in cleaning efficiency and waste in waste heat are solved; the device has the advantages of improving the test efficiency, reducing the energy consumption, and realizing automatic cleaning of the blade and waste heat recycling.

Description

Technical Field

[0001] The present invention belongs to the field of asphalt material testing equipment, and particularly relates to an energy-saving and efficient asphalt testing equipment. Background Art

[0002] As a core building material in road engineering, accurate testing of the physical properties of asphalt materials is crucial for engineering quality control. In key tests such as the softening point, ductility, and penetration of asphalt, special blades are often required to cut or trim specimens to ensure the dimensional accuracy of the test pieces. Most traditional testing devices adopt a fixed tool holder structure, and there are the following technical bottlenecks in operation: First, the blade is prone to material adhesion when cutting low-temperature asphalt specimens. Although the conventional electric heating module can alleviate this problem, continuous heating leads to high energy consumption, and manual intervention is required when switching the blade, which affects the test efficiency; Second, it is difficult to completely remove the residual asphalt on the blade surface after the test. The existing mechanical scraping method is easy to damage the blade edge, and solvent cleaning poses a risk of environmental pollution; Third, the waste heat of the blade heating system is not effectively utilized. Especially in cold environments, the preheating time at the start-up stage of the equipment is long, which affects the test rhythm; Fourth, the charge and discharge performance of the storage battery is greatly affected by changes in ambient temperature, and the battery life is severely shortened in low-temperature environments. In addition, the existing device lacks precise positioning control during the blade switching process, resulting in deviations during the conversion between the test station and the cleaning station, affecting the accuracy of the test results. At the same time, the traditional device lacks an effective cleaning mechanism during the blade cleaning process and cannot achieve automatic cleaning, increasing the workload of the operator. In view of the above problems, the existing technology urgently needs to be improved. Summary of the Invention

[0003] The present invention provides an energy-saving and efficient asphalt testing equipment to solve at least one of the above technical problems.

[0004] The technical solution adopted by the present invention is as follows:

[0005] An energy-saving and efficient asphalt testing equipment includes an operating handle. A support frame is fixedly connected to the end of the operating handle. A tool holder assembly is rotatably connected to the lower end of the support frame. Installation grooves for installing blades are symmetrically arranged at both ends of the tool holder assembly. An electric heating component and a heat exchange component are arranged on the inner wall of each installation groove. When the tool holder assembly rotates so that one side installation groove is located at the test station, the other side installation groove is located at the cleaning station. The electric heating component inside the installation groove located at the test station is started, and the electric heating component inside the installation groove located at the cleaning station is turned off. The heat exchange component is used to conduct the waste heat of the electric heating component at the test station to the installation groove at the cleaning station. A cleaning mechanism is also provided on the support frame, and the cleaning mechanism is used to clean the blade at the cleaning station.

[0006] Further, the present application also proposes that a chute is provided on the support frame, a slide rail is slidably connected in the chute, the slide rail is parallel to the blade in the cleaning station, the cleaning mechanism is slidably connected to the slide rail, and when any installation groove rotates from the test station to the cleaning station, the slide rail slides along the chute in a direction close to the blade to be cleaned.

[0007] Further, the present application also proposes that two groups of heat exchange components are connected with a waste heat recovery branch through a three-way valve. A battery compartment is provided inside the handle, and the other end of the waste heat recovery branch is connected into the battery compartment. The three-way valve spool rotates to enable the heat exchange medium to have a first circulation mode of circulating only between the two groups of heat exchange components, and a second circulation mode of circulating among the two groups of heat exchange components and the waste heat recovery branch.

[0008] Further, the present application also proposes that the lower end of the support frame is symmetrically and rotatably connected with a rotating seat for connecting the tool holder assembly. One side wall of the rotating seat has a coaxial and outwardly extending rotating shaft, a cam is provided on the rotating shaft, an oil cylinder is provided inside the support frame, a piston is slidably connected in the oil cylinder, a push rod is fixedly connected to the bottom of the piston, the bottom of the push rod abuts against the edge of the cam, a spring member is fixedly connected between the piston and the inner wall of the oil cylinder, hydraulic oil is provided in the oil cylinder, a telescopic cylinder is provided in the chute, a sliding rod is slidably connected inside the telescopic cylinder, the lower end of the sliding rod is fixedly connected to the slide rail, and a guide oil pipe is provided between the inner cavity of the oil cylinder and the inner cavity of the telescopic cylinder.

[0009] Further, the present application also proposes that two groups of sliding grooves are symmetrically provided on the rotating seat, conductive blocks are slidably connected in the sliding grooves, the two groups of electric heating components include electric heating plates, a first electrical connector is provided between the two electric heating plates and the adjacent sliding grooves, a conductive spring is fixedly connected between the conductive block and the first electrical connector, and a second electrical connector is provided inside the support frame and is matched with the first electrical connector.

[0010] Further, the present application also proposes that the heat exchange component includes a heat exchange tube, the heat exchange tube is arranged in a continuous S shape in two installation grooves, the heat exchange tube is attached to the electric heating plate, the two heat exchange tubes are connected into a circulation loop, and a pump is provided on any one of the heat exchange tubes.

[0011] Further, the present application also proposes that the cleaning mechanism includes a driving block slid in the slide rail, a cleaning component is provided at the outer end of the driving block, the cleaning component includes a servo motor fixed on the driving block, an output end of the servo motor is fixedly connected with a mounting seat, a cleaning piece is detachably connected to the mounting seat, and a cleaning end face of the cleaning piece abuts against the blade in the cleaning station.

[0012] Furthermore, the present application also proposes that a temperature display is provided on the handle. The temperature display is used to display the surface temperature of the blade, the temperature of the battery compartment, and the ambient temperature at the test station and the cleaning station. It also includes an automatic control system. When the ambient temperature is lower than the first threshold, the automatic control system controls the rotation of the three-way valve spool to make the heat exchange medium circulate in the second circulation mode. When the ambient temperature is higher than the first threshold, the automatic control system controls the rotation of the three-way valve spool to make the heat exchange medium circulate in the first circulation mode.

[0013] Furthermore, the present application also proposes that a driving motor is provided on the side wall of the support frame. The driving motor is a forward and reverse, self-locking motor, and the driving motor has an output end fixedly connected to the rotating seat.

[0014] Furthermore, the present application also proposes that the handle further includes a grip. The grip is located below the handle, and an anti-slip rubber sleeve is provided outside the grip.

[0015] As can be seen from the above, an energy-saving and efficient asphalt test device, its cleaning mechanism, heat exchange component, and drive system provided by the present application rotate the tool holder assembly to switch between the test station and the cleaning station, cooperate with the electric heating component and the heat exchange component to realize the recovery and utilization of waste heat, and use the cleaning mechanism to automatically clean the residues on the blade, solving the problems of high energy consumption, low cleaning efficiency, and waste of waste heat in the traditional device, and having the advantages of improving the test efficiency, reducing energy consumption, realizing automatic cleaning of the blade, and recovering and utilizing waste heat.

[0016] Due to the adoption of the above technical solutions, the beneficial effects obtained by the present invention are as follows:

[0017] 1. The present application realizes the dynamic distribution of heat energy between two stations through the rotation of the tool holder, reducing additional energy consumption; this solution synchronously completes the cleaning process during the station switching process, avoiding operation interruption; the traditional waste heat recovery system is separately arranged from the blade assembly, and this solution integrates the heat exchange component into the installation groove to realize compact heat energy utilization. The present application can effectively solve the problems of blade adhesion and long preheating time in low-temperature environments, realize continuous operation by using the station switching mechanism, and reduce energy consumption through waste heat recovery. The automatic cleaning mechanism avoids manual intervention, reduces the risk of blade damage, and the integrated design of the heat exchange component improves the heat energy utilization efficiency, providing a stable and reliable operating environment for asphalt testing.

[0018] 2. Through the sliding cooperation of the slide rail and the chute, the spatial position of the cleaning mechanism is automatically adjusted when the blade station is switched, so that the cleaning tool always maintains precise alignment with the blade surface. In the prior art, the operator needs to repeatedly calibrate the tool position during the cleaning operation. This solution realizes the automatic positioning of the cleaning mechanism through mechanical linkage, eliminating the human adjustment error.

[0019] Through the above technical solution, the present application realizes the automatic coordinated movement of the cleaning mechanism and the blade station switching, ensuring that the cleaning tool enters the working position immediately after the blade reaches the cleaning station, and avoiding the test interruption caused by manual intervention. This design significantly improves the positioning accuracy of the blade cleaning operation, effectively prevents the problems of incomplete cleaning or blade damage caused by the misalignment of the cleaning tool and the blade, and at the same time shortens the unnecessary downtime during the test cycle.

[0020] 3. When the device is in the normal working state, the three-way valve is in the first circulation mode, and the heat exchange medium circulates between the two groups of heat exchange components, transferring the heat generated by the test station blade to the cleaning station to assist the blade cleaning. When the ambient temperature is lower than the set threshold or the battery needs to be preheated, the three-way valve switches to the second circulation mode, and part of the heat exchange medium flows into the battery compartment through the waste heat recovery branch, using the waste heat to increase the battery temperature to improve the charge and discharge performance in the low-temperature environment.

[0021] Through the coordinated action of the three-way valve and the waste heat recovery branch in this solution, the waste heat can be directionally distributed according to actual needs, especially avoiding the capacity attenuation of the battery caused by low temperature in the cold environment.

[0022] Through the above technical solution, the present application solves the problems of low waste heat utilization rate of the electric heating system of the asphalt test device and the decline of the battery's low-temperature endurance, and realizes the gradient utilization of thermal energy resources. By converting the originally wasted heat into the heat preservation energy of the battery through the waste heat recovery branch, it not only reduces the energy consumption of external heating equipment, but also maintains the working stability of the battery in the low-temperature environment, improving the overall energy efficiency of the device.

[0023] 4. When the tool holder assembly performs station switching, the rotating seat drives the rotating shaft to rotate synchronously, and the cam profile pushes the push rod to make a reciprocating motion. The piston compresses the spring element in the oil cylinder to form the flow of hydraulic oil, and transmits the pressure to the telescopic cylinder through the oil guide pipe, driving the sliding rod to drive the slide rail to slide along the chute. This process realizes the mechanical linkage between the blade station switching and the displacement of the cleaning mechanism, and can complete the automatic positioning of the cleaning mechanism without additional power input. Through the combined design of the cam mechanism and the hydraulic system, the rotational kinetic energy of the tool holder is converted into the driving energy of the cleaning mechanism, forming a closed mechanical transmission chain, effectively reducing the system energy consumption.

[0024] When the tool holder assembly rotates to switch workstations with the installation groove, the rotating seat rotates synchronously. The conductive block corresponding to the electric heating plate at the test workstation moves outward along the sliding groove under the action of centrifugal force, and its conductive spring is stretched to generate a resilience force, pushing the conductive block into stable contact with the second electrical connector on the inner side of the support frame, thereby connecting the power supply of the electric heating plate. The conductive block at the cleaning workstation is not affected by centrifugal force, and the conductive spring remains in a natural contraction state, causing the conductive block to disengage from the second electrical connector and cutting off the power supply to the electric heating plate on that side. This structure automatically controls the on / off of the circuit through mechanical movement without the need for additional electronic switches.

[0025] The displacement of the conductive block is driven by the centrifugal force generated by the rotation of the rotating seat, and combined with the elastic reset characteristic of the conductive spring, the automatic on / off control of the blade heating system is realized, which not only simplifies the operation process but also improves the reliability of the circuit connection.

[0026] Through the above technical solution, the present application effectively solves the problem of low heating control efficiency during the tool bit switching process. The automatic switching of the heating circuit is realized through a mechanical linkage structure, avoiding the test interruption caused by manual operation. At the same time, the elastic compensation characteristic of the conductive spring is used to ensure the stability of the electrical contact, reducing the risk of heating failure caused by poor contact.

[0027] 5. Through the S-shaped heat exchange tube and the circulation loop design, the active transfer of heat is realized during the tool bit switching process, avoiding repeated heating, and at the same time, the waste heat is used to improve the cleaning efficiency. Compared with the single straight-line heat exchange tube layout, the S-shaped arrangement significantly increases the heat exchange area and shortens the preheating time of the tool bits.

[0028] 6. In a low-temperature test environment, when the temperature sensor detects that the ambient temperature is lower than the first threshold, the automatic control system outputs a control signal to drive the three-way valve actuator to rotate, expanding the heat exchange medium circulation path to the waste heat recovery branch. At this time, while the heat generated by the electric heating component at the test workstation is transferred to the installation groove at the cleaning workstation through the heat exchange tube, part of the heat is introduced into the battery compartment through the waste heat recovery branch to preheat the battery to maintain its normal operating temperature. When the ambient temperature rises above the first threshold, the three-way valve switches to the first circulation mode, and the heat exchange medium only circulates between the two heat exchange components, giving priority to ensuring the heat conduction requirements of the tool bit heating and cleaning workstations. The temperature changes of each key part are monitored in real time through the temperature display to ensure that the system operation parameters are within a reasonable range. The present application realizes the dynamic distribution optimization of waste heat resources, giving priority to ensuring the battery operating temperature in a low-temperature environment and avoiding the problem of device power supply interruption caused by the decline of battery performance; maintaining the heat conduction efficiency of the tool bit heating and cleaning workstations in a normal temperature environment while reducing the frequency of manual operation. During the test process, the tool bit temperature, battery status, and environmental parameters are centrally fed back through the integrated display, significantly improving the convenience of test data monitoring and operation safety. Description of the Drawings

[0029] Figure 1 is a schematic structural view of a specific embodiment of the present invention;

[0030] Figure 2 is a perspective view of a specific embodiment of the present invention;

[0031] Figure 3 is a front view of a specific embodiment of the present invention;

[0032] Figure 4 of the present invention Figure 1 is an enlarged view of part A;

[0033] Figure 5 is a schematic structural view of a support frame and a tool holder assembly of the present invention.

[0034] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0035] In the accompanying drawings:

[0036] 1. Handle; 11. Grip; 2. Support frame; 21. Rotating seat; 211. Sliding groove; 212. Conductive block; 213. Conductive spring; 214. Second electrical connector; 22. Chute; 23. Slide rail; 24. Driving block; 25. Cleaning assembly; 3. Tool holder assembly; 31. Installation groove; 32. Electric heating plate; 321. First electrical connector; 4. Driving motor; 5. Rotating shaft; 51. Cam; 6. Oil cylinder; 61. Piston; 62. Push rod; 63. Spring member; 7. Telescopic cylinder; 71. Sliding rod; 72. Oil guide pipe; 8. Heat exchange assembly; 81. Pump; 82. Three-way valve; 83. Waste heat recovery branch; 9. Battery compartment. Specific Embodiment

[0037] In order to more clearly illustrate the overall concept of the present invention, the following will be described in detail by way of examples in conjunction with the accompanying drawings of the specification.

[0038] In the following description, many specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may be practiced in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited by the specific embodiments disclosed below.

[0039] In addition, in the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "top", "bottom", "inner", "outer", "axial direction", "radial direction", "circumferential direction", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0040] In the present invention, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present invention, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to terms such as "embodiment", "example", "an embodiment", "example", or "specific example" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] Refer to Figures 1 to 5 , an energy-saving and efficient asphalt testing device, comprising an operation handle (1), a support frame (2) fixedly connected to the end of the operation handle (1), a tool holder assembly (3) rotatably connected to the lower end of the support frame (2), mounting grooves (31) for installing blades symmetrically arranged at both ends of the tool holder assembly (3), an electric heating assembly and a heat exchange assembly (8) are provided on the inner wall of each mounting groove (31). When the tool holder assembly (3) rotates to make one side of the mounting groove (31) located at the test station, the other side of the mounting groove (31) is located at the cleaning station. The electric heating assembly inside the mounting groove (31) located at the test station is started, and the electric heating assembly inside the mounting groove (31) located at the cleaning station is turned off. The heat exchange assembly (8) is used to conduct the waste heat of the electric heating assembly at the test station to the mounting groove (31) at the cleaning station. It further includes a cleaning mechanism provided on the support frame (2), and the cleaning mechanism is used to clean the blades at the cleaning station.

[0043] Among them, the operating handle (1) refers to the control component held by the operator, which can be manufactured by injection molding process, and anti-slip patterns are set on the surface to improve the holding stability. The support frame (2) refers to the load-bearing structure connecting the handle (1) and the tool holder assembly (3), and specifically, an aluminum alloy profile can be welded to form a triangular stable structure. The tool holder assembly (3) refers to the functional module for installing the blade, and realizes 180-degree reciprocating rotation through the rotating shaft (5), so that the two installation slots (31) enter the working state alternately. The installation slot (31) refers to the positioning structure for accommodating the blade, and different specifications of blades can be fixed by a spring clamping mechanism. The electric heating component refers to the blade heating device, and specifically, an embedded resistance wire can be used in combination with a temperature control module to achieve precise heating. The heat exchange component (8) refers to the heat energy transfer device, for example, a copper heat pipe is used to connect the two installation slots (31), and a phase change heat transfer medium is filled inside. The cleaning mechanism refers to the blade cleaning device, which can be set as a composite structure of a rotating brush head and negative pressure adsorption.

[0044] Specifically, the tool holder assembly (3) realizes the dual-station switching through the rotating mechanism. When one installation slot (31) is in the test station, the electric heating component is started to maintain the working temperature of the blade. At the same time, the heat exchange component (8) transfers the generated waste heat to the other installation slot (31) in the cleaning station through the heat conduction medium. The blade in the cleaning station softens the residual asphalt under the action of the waste heat, and the cleaning mechanism cleans the surface of the blade along the preset track. After the cutting operation is completed, the operator controls the tool holder assembly (3) to rotate 180 degrees through the handle (1), so that the cleaned blade enters the test station, and the original working blade is transferred to the cleaning station, forming a continuous operation cycle.

[0045] Compared with the prior art, the traditional fixed tool holder needs to separately set a heating device to preheat the spare blade. In this solution, the heat energy is dynamically distributed between the two stations through the rotation of the tool holder, reducing the additional energy consumption. In the prior art, the blade cleaning needs to be processed separately after disassembly. In this solution, the cleaning process is completed synchronously during the station switching process, avoiding the interruption of the operation. The traditional waste heat recovery system is separately set from the blade assembly. In this solution, the heat exchange component (8) is integrated into the installation slot (31) to realize the compact utilization of heat energy.

[0046] Through the above technical solutions, this application effectively solves the problems of blade adhesion and long preheating time in low-temperature environments, realizes continuous operation by using the station switching mechanism, reduces energy consumption through waste heat recovery. The automatic cleaning mechanism avoids manual intervention and reduces the risk of blade damage. The integrated design of the heat exchange component (8) improves the heat energy utilization efficiency, providing a stable and reliable operating environment for asphalt tests.

[0047] As a preferred embodiment of this application, referring to Figures 1 - 4, a chute (22) is provided on the support frame (2), a slide rail (23) is slidably connected in the chute (22), the slide rail (23) is parallel to the blade at the cleaning station, the cleaning mechanism is slidably connected to the slide rail (23), and when any mounting groove (31) rotates from the test station to the cleaning station, the slide rail (23) slides along the chute (22) towards the direction close to the blade to be cleaned.

[0048] Among them, the chute (22) refers to a long strip-shaped guiding structure opened on the support frame (2), which can be specifically realized by a linear groove structure, and low-friction coefficient materials can be provided on its inner wall to reduce the sliding resistance. The slide rail (23) refers to a sliding component matching the shape of the chute (22), which can be specifically realized by a combined structure of a metal guide rail and a ball slider, and its length direction is kept parallel to the axial direction of the blade at the cleaning station. The cleaning mechanism refers to an execution component for removing residues on the blade surface, which can be specifically realized by a mobile scraping device with a driving source, and this device realizes linear displacement through the guiding action of the slide rail (23). The sliding mechanism of the slide rail (23) refers to the linkage control method in which the slide rail (23) generates displacement in the chute (22) when the tool holder assembly (3) rotates and switches stations, which can be specifically realized by mechanical limit triggering or sensor feedback control to ensure that the cleaning mechanism always aligns with the position of the blade to be cleaned.

[0049] Specifically, the cooperation between the chute (22) and the slide rail (23) constitutes a lateral movement guiding mechanism, and the sliding direction of the slide rail (23) is perpendicular to the axis line of the rotation axis (5) of the tool holder assembly (3). After the tool holder assembly (3) completes the station switching action, the mounting groove (31) at the cleaning station drives the blade to reach a predetermined position. At this time, the slide rail (23) moves a predetermined distance in the axial direction of the blade in the chute (22), for example, moves 5-10 millimeters, so that the cleaning mechanism forms a contact pressure with the blade surface. This movement process can be realized by the mechanical cam (51) pushing mechanism or the electric push rod (62) driving, and the position movement action of the slide rail (23) is immediately triggered after the tool holder assembly (3) rotates in place. After the cleaning mechanism moves to the working position along with the slide rail (23), the cleaning components inside it start to perform scraping or wiping operations to ensure that the residual asphalt on the blade surface is effectively removed.

[0050] Compared with the prior art, in the traditional device, the position of the cleaning mechanism is fixed, and after the blade is switched, the position of the cleaning tool needs to be adjusted manually. However, in this solution, through the sliding cooperation between the slide rail (23) and the chute (22), the spatial position of the cleaning mechanism is automatically adjusted when the blade station is switched, so that the cleaning tool always maintains accurate alignment with the blade surface. In the prior art, the cleaning operation requires the operator to repeatedly calibrate the tool position. This solution realizes the automatic positioning of the cleaning mechanism through mechanical linkage and eliminates the human adjustment error.

[0051] Through the above technical solution, the present application realizes the automatic coordinated movement of the cleaning mechanism and the blade station switching, ensuring that the cleaning tool immediately enters the working position after the blade reaches the cleaning station, and avoiding the test interruption caused by manual intervention. This design significantly improves the positioning accuracy of the blade cleaning operation, effectively prevents the problems of incomplete cleaning or blade damage caused by the misalignment of the cleaning tool and the blade, and at the same time shortens the unnecessary downtime during the test cycle.

[0052] As a preferred embodiment of the present application, referring to Figure 1 and Figure 4 , two groups of heat exchange components (8) are connected with a waste heat recovery branch (83) through a three-way valve (82). A battery compartment (9) is arranged inside the handle (1), and the other end of the waste heat recovery branch (83) is connected into the battery compartment (9). The valve core of the three-way valve (82) rotates to enable the heat exchange medium to have a first circulation mode of circulating only between the two groups of heat exchange components (8), and a second circulation mode of circulating among the two groups of heat exchange components (8) and the waste heat recovery branch (83).

[0053] Among them, the three-way valve (82) refers to a valve with three fluid channels, and specifically can be realized by a rotary valve driven by electricity or manually adjusted. The medium flow path is switched by changing the valve core angle. The waste heat recovery branch (83) refers to a pipeline structure connecting the heat exchange component (8) and the battery compartment (9), and specifically can be made of copper or aluminum bellows, and is used to conduct the waste heat generated by the electric heating at the test station to the battery compartment (9). The battery compartment (9) refers to a cavity for accommodating the energy storage unit, and specifically can be a metal shell structure lined with insulating materials, and is used to store the electric energy converted from the recovered heat energy. The first circulation mode means that the medium circulates only inside the two groups of heat exchange components (8), and specifically can be realized by the three-way valve (82) closing the waste heat recovery branch (83); the second circulation mode means that the medium flows through the two groups of heat exchange components (8) and the waste heat recovery branch (83) at the same time, and specifically can be realized by the three-way valve (82) opening three channels.

[0054] Specifically, when the device is in the normal working state, the three-way valve (82) is in the first circulation mode, and the heat exchange medium circulates between the two groups of heat exchange components (8), transferring the heat generated by the blade at the test station to assist the blade cleaning at the cleaning station. When the ambient temperature is lower than the set threshold or the battery needs to be preheated, the three-way valve (82) switches to the second circulation mode, and part of the heat exchange medium flows into the battery compartment (9) through the waste heat recovery branch (83), and the waste heat is used to increase the battery temperature to improve the charge and discharge performance in the low temperature environment. The switching between the two modes can be completed by automatic control triggered by a temperature sensor or manual operation.

[0055] Compared with the prior art, the traditional device does not have a waste heat recovery branch (83) and a circulation mode switching mechanism, resulting in the heat generated by electric heating can only be used for blade cleaning and cannot compensate the temperature of the storage battery. However, through the synergistic effect of the three-way valve (82) and the waste heat recovery branch (83) in this solution, the waste heat can be directionally distributed according to actual needs, especially avoiding the capacity attenuation of the storage battery caused by low temperature in cold environments.

[0056] Through the above technical solution, this application solves the problems of low utilization rate of waste heat in the electric heating system of the asphalt test device and the decline in the low-temperature endurance of the storage battery, and realizes the gradient utilization of thermal energy resources. The waste heat recovery branch (83) converts the originally wasted heat into the heat preservation energy of the storage battery, which not only reduces the energy consumption of external heating equipment, but also maintains the working stability of the storage battery in low-temperature environments, improving the overall energy efficiency of the device.

[0057] With particular reference to Figure 4 , a rotating seat (21) for connecting the tool holder assembly (3) is symmetrically and rotatably connected to the lower end of the support frame (2). One side wall of the rotating seat (21) has a rotating shaft (5) arranged coaxially and extending outward. A cam (51) is provided on the rotating shaft (5). An oil cylinder (6) is provided in the support frame (2). A piston (61) is slidably connected in the oil cylinder (6). A push rod (62) is fixedly connected to the bottom of the piston (61). The bottom of the push rod (62) abuts against the edge of the cam (51). A spring member (63) is fixedly connected between the piston (61) and the inner wall of the oil cylinder (6). Hydraulic oil is provided in the oil cylinder (6). A telescopic cylinder (7) is provided in the chute (22). A sliding rod (71) is slidably connected inside the telescopic cylinder (7). The lower end of the sliding rod (71) is fixedly connected to the slide rail (23). A guide oil pipe (72) is provided between the inner cavity of the oil cylinder (6) and the inner cavity of the telescopic cylinder (7).

[0058] Among them, the rotating seat (21) refers to the base structure that bears the rotational movement of the tool holder assembly (3), and can be specifically realized by an annular seat body with bearings. Its symmetrical arrangement can ensure the stability of the two-way rotation of the tool holder assembly (3). Among them, the cam (51) refers to a mechanical component that controls the movement of the push rod (62) through the contour curve, and can be specifically realized by an eccentric wheel structure. When the rotating shaft (5) rotates, the push rod (62) can be driven to generate an axial displacement through the contour of the cam (51). Among them, the guide oil pipe (72) refers to a sealed pipeline that connects the various actuating components of the hydraulic system, and can be specifically realized by a pressure-resistant metal hose. The linkage control of the oil cylinder (6) and the telescopic cylinder (7) is realized by transmitting pressure through hydraulic oil.

[0059] Specifically, when the tool holder assembly (3) switches workstations, the rotating seat (21) drives the rotating shaft (5) to rotate synchronously, and the contour of the cam (51) pushes the push rod (62) to move reciprocally. The piston (61) compresses the spring member (63) in the oil cylinder (6) to form the flow of hydraulic oil, and transmits the pressure to the telescopic cylinder (7) through the oil guide pipe (72), driving the sliding rod (71) to drive the slide rail (23) to slide along the sliding groove (22). This process realizes the mechanical linkage between the tool bit workstation switching and the displacement of the cleaning mechanism, and can complete the automatic positioning of the cleaning mechanism without additional power input.

[0060] Compared with the prior art, the adjustment of the cleaning workstation of the traditional device relies on manual operation or an independent drive unit, resulting in problems such as response lag and excessive energy consumption. Through the combined design of the cam (51) mechanism and the hydraulic system in this solution, the rotational kinetic energy of the tool holder is converted into the driving energy of the cleaning mechanism, forming a closed mechanical transmission chain, effectively reducing the energy consumption of the system.

[0061] Through the above technical solution, this application realizes the automatic positioning function of the tool bit cleaning workstation, synchronously triggers the displacement action of the slide rail (23) during the rotation and switching of the tool holder, and solves the technical problems of low efficiency of manual adjustment and high energy consumption of split drive. The recycling of hydraulic oil in the closed pipeline avoids energy loss, and the reset function of the spring member (63) ensures the coherence and stability of the system operation.

[0062] With key reference to Figure 4 , this application further proposes that two sets of sliding grooves (211) are symmetrically arranged on the rotating seat (21), the conductive blocks (212) are slidably connected in the sliding grooves (211), the two sets of electric heating components include electric heating plates (32), first electrical connectors (321) are arranged between the two electric heating plates (32) and their adjacent sliding grooves (211), conductive springs (213) are fixedly connected between the conductive blocks (212) and the first electrical connectors (321), and second electrical connectors (214) matching the first electrical connectors (321) are arranged inside the support frame (2).

[0063] Among them, the sliding groove (211) refers to the guiding structure provided on both sides of the rotating seat (21), which can be specifically implemented by a rectangular groove and is used to restrict the movement track of the conductive block (212). The conductive block (212) refers to a sliding component with electrical conductivity, which can be specifically made of copper alloy material and is used to establish an electrical connection when the rotating seat (21) rotates. The first electrical connector (321) refers to the interface component connecting the electric heating plate (32), which can be specifically implemented by an elastic copper sheet to ensure continuous contact during the movement of the conductive block (212). The conductive spring (213) refers to an elastic element with electrical conductivity, which can be specifically implemented by plating silver on the outer layer of a helical spring, maintaining the contact pressure between the conductive block (212) and the first electrical connector (321) and forming an electric current path. The second electrical connector (214) refers to the power supply interface fixed on the support frame (2), which can be specifically implemented by a copper plug-in terminal and forms a separable electrical connection with the first electrical connector (321).

[0064] Specifically, when the tool holder assembly (3) rotates to switch work positions with the installation groove (31), the rotating seat (21) rotates synchronously. The conductive block (212) corresponding to the electric heating plate (32) at the test work position moves outward along the sliding groove (211) under the action of centrifugal force, and its conductive spring (213) is stretched to generate a resilience force, pushing the conductive block (212) to form a stable contact with the second electrical connector (214) on the inner side of the support frame (2), thereby turning on the power supply of the electric heating plate (32). The conductive block (212) at the cleaning work position is not affected by centrifugal force, and the conductive spring (213) maintains a natural contraction state, causing the conductive block (212) to disengage from the second electrical connector (214) and cutting off the power supply of the electric heating plate (32) on that side. This structure automatically controls the on-off of the circuit through mechanical movement without the need to additionally set up an electronic switch.

[0065] Compared with the prior art, the traditional blade heating device uses a fixed electrical connection, and when switching work positions, it is necessary to manually operate the power switch, which has the problems of cumbersome operation and the risk of poor contact. In this solution, the centrifugal force generated by the rotation of the rotating seat (21) drives the displacement of the conductive block (212), and combined with the elastic reset characteristic of the conductive spring (213), the automatic on-off control of the blade heating system is realized, which not only simplifies the operation process but also improves the reliability of the electrical connection.

[0066] Through the above technical solution, the present application effectively solves the problem of low heating control efficiency during blade work position switching, realizes the automatic switching of the heating circuit through a mechanical linkage structure, avoids the test interruption caused by manual operation, and at the same time uses the elastic compensation characteristic of the conductive spring (213) to ensure the stability of electrical contact and reduce the risk of heating failure caused by poor contact.

[0067] As a preferred example of the heat exchange component (8) in the present application, refer toFigure 1 and Figure 4 The heat exchange assembly (8) includes heat exchange tubes which are arranged in a continuous S shape in two installation grooves (31). The heat exchange tubes are in contact with the electric heating plate (32). The two heat exchange tubes are connected to form a circulation loop, and a pump (81) is provided on any one of the heat exchange tubes.

[0068] Among them, the heat exchange tube refers to a tubular structure for conducting heat, and specifically, it can be made of a metal material to achieve efficient heat conduction, and absorbs the heat generated by closely adhering to the surface of the electric heating plate (32). The continuous S-shaped arrangement means that the heat exchange tubes are bent into multiple alternating U-shaped structures, and specifically, the heat exchange efficiency can be improved by increasing the coverage area of the heat exchange tubes in the installation grooves (31). The circulation loop means that two heat exchange tubes are connected by pipes to form a closed fluid channel, and specifically, a three-way valve (82) or a branch pipeline can be used to realize the circulating flow of the heat exchange medium between the two groups of heat exchange tubes. The pump (81) refers to a power device that drives the heat exchange medium to move in the loop, and specifically, a micro centrifugal pump or a gear pump can be used to adjust the heat transfer intensity by controlling the flow rate.

[0069] Specifically, when the electric heating plate (32) in the installation groove (31) at the test station is started, the heat generated by it is absorbed by the closely adhering heat exchange tubes. The heat exchange medium flows along the circulation loop driven by the pump (81), and transfers the heat to the heat exchange tubes located at the cleaning station. Through the S-shaped arrangement design, the effective contact area of the heat exchange tubes in the installation groove (31) is expanded, so that the heat of the electric heating plate (32) can be quickly and evenly conducted to the heat exchange medium. The heat exchange tubes at the cleaning station release heat to soften the asphalt residue on the blade surface and reduce the cleaning resistance. The circulation loop formed by the two heat exchange tubes enables the waste heat to be transferred between different stations, reducing energy loss.

[0070] Compared with the prior art, the heat generated by the electric heating module in the traditional device only acts on the current station, and the blade needs to be reheated when switching stations, resulting in energy waste. In this solution, through the S-shaped heat exchange tube and circulation loop design, active heat transfer is realized during the blade switching process, avoiding repeated heating, and at the same time, the cleaning efficiency is improved by using waste heat. Compared with the single straight-line heat exchange tube arrangement, the S-shaped arrangement significantly increases the heat exchange area and shortens the blade preheating time.

[0071] Through the above technical solutions, this application solves the problem of energy waste caused by blade switching in the traditional asphalt test device, and reduces the energy consumption of the electric heating component through the recycling of waste heat. The blade at the cleaning station is more likely to remove asphalt residue under the action of waste heat, reducing the damage to the blade edge caused by mechanical cleaning. The cooperation of the circulation loop and the pump (81) realizes the directional transfer of heat, enhancing the adaptability of the system to complex test environments.

[0072] As a specific implementation of the cleaning mechanism in this application, refer to Figures 1 - 3 and Figure 5 , the cleaning mechanism includes a driving block (24) sliding in a slide rail (23). A cleaning component (25) is provided at the outer end of the driving block (24). The cleaning component (25) includes a servo motor fixed on the driving block (24). The output end of the servo motor is fixedly connected with a mounting seat. A cleaning blade is detachably connected to the mounting seat. The cleaning end face of the cleaning blade is in contact with the blade located at the cleaning station.

[0073] Among them, the driving block (24) refers to a mechanical component that moves along the axial direction of the slide rail (23). Specifically, it can be processed into a rectangular slider structure using aluminum alloy material. Its sliding trajectory is parallel to the axis of the blade, and it is used to carry the cleaning component (25) to achieve directional displacement. Among them, the servo motor refers to a power device with a speed regulation function. Specifically, a micro DC servo motor can be used, and precise angle control is achieved through encoder feedback, and it is used to drive the cleaning blade to rotate at a set speed. Among them, the mounting seat refers to a connecting component for fixing the cleaning blade. Specifically, a flange structure can be used, and threaded holes or card slots are provided on the surface to facilitate quick disassembly and assembly through bolts or buckles. Among them, the cleaning blade refers to a consumable for physically cleaning the surface of the blade. Specifically, a polytetrafluoroethylene plate can be cut into a circular thin sheet, and an elastic rubber layer is provided at the edge. When contacting the blade, it can scrape off residues without scratching the blade edge.

[0074] Specifically, when the tool holder assembly (3) rotates to the cleaning station, the servo motor drives the mounting seat to drive the cleaning blade to rotate, and the driving block (24) slides along the slide rail (23) to make the end face of the cleaning blade fit the surface of the blade. During the rotation of the cleaning blade, the asphalt residues on the surface of the blade are peeled off through friction, and at the same time, the elastic rubber layer buffers the contact pressure to avoid damage to the blade edge. The detachable design of the mounting seat allows different specifications of cleaning blades to be replaced according to the blade thickness. For example, cleaning blades with a diameter of 5 cm or 8 cm can be configured to adapt to different sizes of blades.

[0075] Compared with the prior art, the traditional mechanical scraper uses a fixed metal scraper to directly scrape the blade, which has the risk of scratching the blade edge and cannot adapt to different blade thicknesses. This solution combines a rotary flexible cleaning blade with a servo motor, reducing the probability of blade edge damage while maintaining the cleaning efficiency, and the detachable structure further improves the equipment compatibility.

[0076] Through the above technical solutions, this application solves the technical problems that it is difficult to completely remove the asphalt residues on the blade surface and it is easy to damage the blade edge, realizes an effective balance between physical scraping and flexible protection during the blade cleaning process, and at the same time avoids environmental pollution caused by solvent cleaning. The replaceable design of the cleaning blade enables the device to adapt to various specifications of test blades, improving the equipment reuse rate.

[0077] As a preferred embodiment of the present application, a temperature display is provided on the handle (1). The temperature display is used to display the surface temperature of the blade at the test station and the cleaning station, the temperature of the battery compartment (9), and the ambient temperature. At the same time, it includes an automatic control system. When the ambient temperature is lower than the first threshold, the automatic control system controls the rotation of the valve core of the three-way valve (82) so that the heat exchange medium circulates in the second circulation mode. When the ambient temperature is higher than the first threshold, the automatic control system controls the rotation of the valve core of the three-way valve (82) so that the heat exchange medium circulates in the first circulation mode.

[0078] Among them, the temperature display refers to a digital temperature monitoring module integrated in the handle (1), which can be specifically implemented by combining a liquid crystal display screen with multiple temperature sensors. The sensors are respectively arranged on the surface of the blade at the test station, the surface of the blade at the cleaning station, inside the battery compartment (9), and outside the device, and are transmitted to the display through a data line for real-time temperature visualization. Among them, the automatic control system refers to a controller that judges the execution logic based on the ambient temperature, which can be specifically implemented by the signal linkage of an embedded microprocessor and a temperature sensor. The rotation angle of the valve core of the three-way valve (82) is driven through a preset program, thereby changing the flow path of the heat exchange medium. Among them, the first threshold refers to a preset ambient temperature critical value, which can be specifically set to, for example, 5°C through experimental data or empirical values. When the detection value of the external temperature sensor is lower than this threshold, the second circulation mode is triggered. Among them, the second circulation mode refers to the working state in which the heat exchange medium circulates between the two heat exchange components (8) and the waste heat recovery branch (83). Specifically, the pipeline connection relationship is switched through the three-way valve (82), so that the waste heat is simultaneously transferred to the installation groove (31) at the cleaning station and the inside of the battery compartment (9), realizing the dual functions of waste heat recovery and battery preheating.

[0079] Specifically, in a low-temperature test environment, when the temperature sensor detects that the ambient temperature is lower than the first threshold, the automatic control system outputs a control signal to drive the actuator of the three-way valve (82) to rotate, so that the heat exchange medium circulation path extends to the waste heat recovery branch (83). At this time, while the heat generated by the electric heating component at the test station is transferred to the installation groove (31) at the cleaning station through the heat exchange tube, part of the heat is introduced into the battery compartment (9) through the waste heat recovery branch (83) to preheat the battery to maintain its normal operating temperature. When the ambient temperature rises above the first threshold, the three-way valve (82) switches to the first circulation mode, and the heat exchange medium only circulates between the two heat exchange components (8), giving priority to ensuring the heating of the blade and the heat conduction requirements at the cleaning station. This process monitors the temperature changes of each key part in real time through the temperature display to ensure that the system operation parameters are within a reasonable range.

[0080] Compared with the prior art, in traditional devices, the waste heat recovery path is fixed and cannot be dynamically adjusted according to the ambient temperature, resulting in low preheating efficiency of the battery in low-temperature environments, while excess heat cannot be effectively distributed in high-temperature environments. This solution realizes the intelligent switching of the heat exchange medium circulation mode by introducing a temperature monitoring and automatic control linkage mechanism, and solves the technical defect that a single circulation mode cannot adapt to temperature changes.

[0081] Through the above technical solutions, this application realizes the dynamic distribution optimization of waste heat resources, preferentially guarantees the working temperature of the battery in low-temperature environments, and avoids the problem of power supply interruption of the device caused by the decline of battery performance; in normal temperature environments, it maintains the heat conduction efficiency of the blade heating and cleaning stations, while reducing the frequency of manual operations. During the test process, the blade temperature, battery status, and environmental parameters are centrally feedback through an integrated display, significantly improving the convenience of test data monitoring and operation safety.

[0082] As a preferred embodiment of this application, referring to Figure 1 , Figure 3 and Figure 5 , a driving motor (4) is provided on the side wall of the support frame (2). The driving motor (4) is a forward and reverse rotation, self-locking motor, and the driving motor (4) has an output end fixedly connected to the rotating seat (21).

[0083] Among them, a forward and reverse rotation motor refers to a driving device that can rotate in both clockwise and counterclockwise directions through a control signal. Specifically, a DC motor with an H-bridge circuit control can be used to achieve this. This feature enables the tool holder assembly (3) to rotate bidirectionally to switch workstations according to test requirements. Among them, a self-locking motor refers to a power device that can maintain the position of the output shaft locked in the power-off state. Specifically, a motor with a mechanical brake or electromagnetic brake structure can be used to achieve this. This feature ensures that the tool holder assembly (3) remains stably positioned after the workstation is switched. The fixed connection between the output end and the rotating seat (21) means that the motor shaft (5) forms a rigid connection with the rotating seat (21) through a coupling or flange. Specifically, it can be achieved by keyway fitting or bolt fastening. This feature ensures the reliability of power transmission and the rotational accuracy.

[0084] Specifically, during the cutting process of the asphalt specimen, when it is necessary to switch between the test workstation and the cleaning workstation, the driving motor (4) receives a control signal to drive the rotating seat (21) to rotate, driving the tool holder assembly (3) to rotate around the axis of the support frame (2). The forward and reverse rotation function enables the tool holder assembly (3) to rotate bidirectionally to the target workstation, and the self-locking feature eliminates the inertial displacement after the rotation stops, maintaining the accurate positioning of the blade. The rigid connection structure between the output end and the rotating seat (21) avoids the positioning deviation caused by the transmission gap, ensuring that the contact surface between the blade and the specimen at the test workstation remains perpendicular.

[0085] In some embodiments, the drive motor (4) may be equipped with an encoder to achieve closed-loop control of the rotation angle, for example, an incremental encoder with 500 pulses per revolution may be used to monitor the rotation angle of the rotating seat (21). A rolling bearing may be provided at the connection between the rotating seat (21) and the support frame (2) to reduce frictional resistance, and a flange connection may be used to ensure coaxiality between the motor output end and the rotating seat (21).

[0086] Compared with existing technologies, traditional devices rely on manual rotation of the blade holder or use a conventional unidirectional motor with a mechanical limiter, resulting in low positioning accuracy and inertial offset. This solution uses a forward and reverse self-locking motor to achieve bidirectional controllable rotation of the blade holder. Combined with a rigid connection structure to eliminate transmission backlash, this solution enables precise positioning during the blade station switching process, avoiding experimental errors caused by manual intervention.

[0087] Through the above technical solution, the present application realizes the automatic station switching of the knife holder assembly (3), effectively solving the problem of low efficiency caused by the traditional device relying on manual operation. The self-locking function prevents the blade position from being offset due to inertia or external force after the rotation stops, ensuring that the blade and the specimen always maintain a standard contact state during the test, thereby improving the reliability of the test data. The forward and reverse control and the rigid transmission structure work together to make the blade move quickly and accurately when switching between the test station and the cleaning station, significantly improving the efficiency of asphalt testing.

[0088] Preferably, the handle (1) further comprises a grip (11) located below the handle (11), and a non-slip rubber sleeve is provided on the outside of the grip (11).

[0089] The handle (11) refers to a gripping component connected to the main body of the handle (1), and can be made of engineering plastic or metal material and fixed to the bottom of the handle (1) by means of threads or snaps, and its axial extension direction forms an angle with the handle (1) to adapt to the ergonomic grip. The anti-slip rubber cover refers to an elastic coating covering the outer surface of the handle (11), and can be made of silicone or thermoplastic elastomer material and fixed by injection molding or sleeve connection. The surface can be provided with anti-slip lines or convex point structures to increase the friction coefficient.

[0090] Specifically, when the operator holds the handle (11), the anti-slip rubber cover generates frictional resistance with the contact surface of the palm through the surface texture, preventing slipping due to sweat or oil stains on the hands. When cutting asphalt samples or cleaning blades, the handle (11) forms a stable support angle between the operator's forearm and the handle (1) through the sunken layout, reducing muscle fatigue caused by long-term operation. The anti-slip rubber cover can maintain its elastic properties in low-temperature environments, avoiding the surface hardening problem caused by temperature changes in traditional hard plastic handles (11).

[0091] Compared with the existing technology, the handle (1) of the traditional asphalt testing device usually adopts a straight-tube integrated design, and the gripping part lacks ergonomic optimization. The operator is prone to blade deviation due to grip discomfort during continuous operation. Although some improvement schemes have added anti-slip grooves, they are not adapted to the characteristics of low-temperature environment materials, and there is a risk of surface frost or hardening. This scheme optimizes the force fulcrum through the independently set handle (11) structure, and combines with the elastic anti-slip layer to achieve stable grip under multiple working conditions.

[0092] Through the above technical solution, the present application effectively solves the problem of insufficient control stability caused by the unreasonable design of the handle (1) in traditional devices. The anti-slip rubber sleeve not only improves the grip friction but also cushions the impact of equipment vibration on the operator, reducing the risk of test errors caused by hand slippage. The elastic material's adaptability to low-temperature environments further ensures operational safety under extreme working conditions and reduces the probability of test interruption caused by equipment control difficulties.

[0093] Anything not described in the present invention can be achieved by adopting or drawing on existing technologies.

[0094] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0095] The foregoing is merely an embodiment of the present invention and is not intended to limit the present invention. It will be apparent to those skilled in the art that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are intended to be included within the scope of the claims of the present invention.

Claims

1. An energy-saving and highly efficient asphalt testing device, characterized in that, It includes an operating handle (1). A support frame (2) is fixedly connected to the end of the operating handle (1). A tool holder assembly (3) is rotatably connected to the lower end of the support frame (2). Mounting grooves (31) for installing blades are symmetrically arranged at both ends of the tool holder assembly (3). An electric heating assembly and a heat exchange assembly (8) are arranged on the inner wall of each mounting groove (31). When the tool holder assembly (3) rotates so that one of the mounting grooves (31) is located at the test station, the other mounting groove (31) is located at the cleaning station. The electric heating assembly inside the mounting groove (31) located at the test station is started, and the electric heating assembly inside the mounting groove (31) located at the cleaning station is turned off. The heat exchange assembly (8) is used to conduct the waste heat of the electric heating assembly at the test station to the mounting groove (31) at the cleaning station. It further includes a cleaning mechanism arranged on the support frame (2), and the cleaning mechanism is used to clean the blade at the cleaning station.

2. The energy-saving and highly efficient asphalt testing equipment according to claim 1, characterized in that, A chute (22) is arranged on the support frame (2). A slide rail (23) is slidably connected in the chute (22). The slide rail (23) is parallel to the blade at the cleaning station. The cleaning mechanism is slidably connected to the slide rail (23). When any of the mounting grooves (31) rotates from the test station to the cleaning station, the slide rail (23) slides along the chute (22) towards the direction close to the blade to be cleaned.

3. An energy-saving and highly efficient asphalt testing device according to claim 1, characterized in that, Two groups of the heat exchange assemblies (8) are connected with a waste heat recovery branch (83) through a three-way valve (82). A battery compartment (9) is arranged inside the handle (1). The other end of the waste heat recovery branch (83) is connected into the battery compartment (9). The valve core of the three-way valve (82) rotates so that the heat exchange medium has a first circulation mode of only circulating between the two groups of heat exchange assemblies (8), and a second circulation mode of circulating among the two groups of heat exchange assemblies (8) and the waste heat recovery branch (83).

4. An energy-saving and highly efficient asphalt test device according to claim 2, characterized in that, Rotating seats (21) for connecting the tool holder assembly (3) are symmetrically and rotatably connected to the lower end of the support frame (2). A rotating shaft (5) which is coaxially arranged and extends outwards is arranged on the side wall of one of the rotating seats (21). A cam (51) is arranged on the rotating shaft (5). An oil cylinder (6) is arranged inside the support frame (2). A piston (61) is slidably connected in the oil cylinder (6). A push rod (62) is fixedly connected to the bottom of the piston (61). The bottom of the push rod (62) abuts against the edge of the cam (51). A spring member (63) is fixedly connected between the piston (61) and the inner wall of the oil cylinder (6). Hydraulic oil is arranged inside the oil cylinder (6). A telescopic cylinder (7) is arranged in the chute (22). A sliding rod (71) is slidably connected inside the telescopic cylinder (7). The lower end of the sliding rod (71) is fixedly connected to the slide rail (23). A guide oil pipe (72) is arranged between the inner cavity of the oil cylinder (6) and the inner cavity of the telescopic cylinder (7).

5. An energy-saving and efficient asphalt testing device according to claim 4, characterized in that, Two sets of sliding grooves (211) are symmetrically arranged on the rotating seat (21). A conductive block (212) is slidably connected in the sliding groove (211). The two electric heating assemblies include electric heating plates (32). A first electrical connector (321) is arranged between the two electric heating plates (32) and the adjacent sliding groove (211). A conductive spring (213) is fixedly connected between the conductive block (212) and the first electrical connector (321). A second electrical connector (214) matching the first electrical connector (321) is arranged inside the support frame (2).

6. The energy-saving and highly efficient asphalt testing equipment according to claim 3, characterized in that, The heat exchange assembly (8) includes a heat exchange tube. The heat exchange tube is arranged in two installation grooves (31) in a continuous S shape. The heat exchange tube is in contact with the electric heating plate (32). The two heat exchange tubes are connected into a circulation loop. A pump (81) is arranged on any one of the heat exchange tubes.

7. An energy-saving and efficient asphalt testing device according to claim 4, characterized in that, The cleaning mechanism includes a driving block (24) sliding in a slide rail (23). A cleaning assembly (25) is arranged at the outer end of the driving block (24). The cleaning assembly (25) includes a servo motor fixed on the driving block (24). The output end of the servo motor is fixedly connected with a mounting seat. A cleaning blade is detachably connected to the mounting seat. The cleaning end face of the cleaning blade is in contact with the blade at the cleaning station.

8. An energy-saving and efficient asphalt testing device according to claim 6, characterized in that, A temperature display is arranged on the handle (1). The temperature display is used to display the surface temperature of the blade, the temperature of the battery compartment (9), and the ambient temperature at the test station and the cleaning station. It also includes an automatic control system. When the ambient temperature is lower than the first threshold, the automatic control system controls the rotation of the valve core of the three-way valve (82) so that the heat exchange medium circulates in the second circulation mode. When the ambient temperature is higher than the first threshold, the automatic control system controls the rotation of the valve core of the three-way valve (82) so that the heat exchange medium circulates in the first circulation mode.

9. The energy-saving and highly efficient asphalt testing equipment according to claim 2, characterized in that, A driving motor (4) is arranged on the side wall of the support frame (2). The driving motor (4) is a forward and reverse rotation, self-locking motor. The driving motor (4) has an output end fixedly connected with the rotating seat (21).

10. The energy-saving and highly efficient asphalt test equipment according to claim 1, characterized in that, The handle (1) further includes a handlebar (11). The handlebar (11) is located below the handle (1). An anti-slip rubber sleeve is arranged outside the handlebar (11).

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