Ironing device of paver and paver
By applying a thermal coating on the screeding plates and tamps of the paver ironing device and heating with an energized heating rod, the problems of uneven heating and low efficiency in the prior art are solved, and more efficient heating and better paving are achieved.
Patent Information
- Application Number
- CN202422172386.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-05
AI Technical Summary
The existing paver ironing device has problems such as uneven heating and difficulty in heating the tamper during the heating process, which leads to uneven laying layers and low heating efficiency in cold weather, which affects the construction progress.
The thermal coating is used to heat the thermal coating on the screed and tamper, and the heating method is improved to ensure uniform heat transfer.
The rapid and even heating of screeds and ramming hammers is achieved, the heating efficiency and laying quality are improved, and the construction progress is not affected under different environmental conditions.
Smart Images
Figure CN223047851U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of paver heating, in particular to a paver screed device and a paver. Background Art
[0002] A paver is a widely used road machinery in the construction machinery field. The screed device is the main working device of the paver, and its function is to complete the compaction and leveling tasks of the paving material. It is usually configured at the tail of the paver, and its specific structure includes a rammer and a screed board. When the paver is in the operation of paving materials, before the work starts, both the rammer and the screed board need to be preheated to prevent them from sticking to the paving material and ensure the smoothness of the paving layer.
[0003] The existing screed equipment adopts a traditional gas heating system. In this system, the gas cylinder is arranged behind the paver seat, controlled by a three-way valve, and the gas is distributed to the gas burners on the screed board through a rubber pipe. These burners are installed on steel pipes and are responsible for providing heat sources for the screed board.
[0004] The defects of the existing technology are as follows. First, since the burners are arranged at the tail of the screed board and the thermal conductivity of the main material of the screed board is poor, it is impossible to ensure uniform heating of the entire screed board. Second, since the burners are located at the tail of the screed board while the rammer is at the front, the flame cannot effectively cover the rammer area, resulting in the rammer being difficult to be fully heated. When starting the paving operation, since the paving material is mainly asphalt mixture, the rammer is prone to adhering to the asphalt mixture, which affects the overall quality of the paving layer and makes the surface of the paving layer prone to uneven roughing phenomenon. Third, in cold weather, the pressure of the gas cylinder may decrease, which further deteriorates the combustion efficiency, resulting in insufficient heating temperature, prolonged heating time, low heating efficiency, and thus affecting the construction progress. Summary of the Utility Model
[0005] In view of the above-mentioned defects of the existing technology, the utility model provides a paver screed device and a paver, which innovatively improve the heating method of the existing screed device to ensure uniform heating of the screed board, effective heating of the rammer, and at the same time improve the stability and reliability of the system under different environmental conditions, thereby improving the quality and efficiency of the paving operation.
[0006] To achieve the above object, the technical solution adopted by the utility model is as follows:
[0007] In a first aspect, a paver screed device includes a screed board and a rammer connected to the screed board, and is characterized in that it further comprises a generator and heating rods electrically connected to the generator; heat-conducting coatings are provided on the inner surface of the screed board and on the rammer; and the heating rods heat the heat-conducting coatings.
[0008] The heat-conducting coating has a relatively high thermal conductivity to achieve rapid heat conduction. Heat-conducting coatings such as pure copper coatings, graphene coatings, and aluminum nitride coatings can be selected. In the present utility model, the heat-conducting coating is provided in the screed plate and the rammer that need to be heated. The heat-conducting coating is heated by a heating rod. Since the coating material of the heat-conducting coating has a high heat conduction efficiency, the heat will be quickly and evenly transferred to the screed plate and the rammer that need to be heated. The heating rod is powered on to heat the heat-conducting coating, changing the heating method from gas heating to electric heating, and the generator provides energy for the heating rod.
[0009] Preferably, the rammer includes a rammer tool carrier and a rammer punch connected to the rammer tool carrier; the heating rod is connected to the rammer tool carrier.
[0010] In actual use, the rammer punch contacts the asphalt mixture and preliminarily compacts the material spread in front of the screed plate by vibrating up and down or hammering, improving the density of the mixture. Setting the heating rod on the rammer tool carrier instead of directly on the rammer punch has the advantage that it effectively reduces the damage that the heating rod may suffer due to directly bearing the impact of the rammer punch and the paving material. Since the rammer tool carrier is relatively far from the direct impact area, the risk of damage or detachment caused by the impact is reduced.
[0011] Preferably, the rammer tool carrier is provided with a groove for accommodating the heating rod; the heating rod is fixed in the groove.
[0012] Since both the rammer tool carrier and the rammer punch have heat-conducting coatings and both have heat-conducting properties, setting the heating rod in the groove does not affect the heating of the rammer by the heating rod. The advantage of this design is that it avoids increasing the overall volume of the rammer due to the attachment of the heating rod and maintains the overall compactness of the device. Secondly, compared with the method of directly fixing the heating rod outside the rammer tool carrier, the heating rod embedded in the groove is more stable, making the heating rod more firm and reliable when bearing the large impact force generated during the paving process, and avoiding the risk of damage or detachment caused by the impact. At the same time, compared with opening the groove on the rammer punch, opening it on the rammer tool carrier will not affect the hardness of the rammer punch.
[0013] Preferably, it further includes a heating controller and a temperature sensor; the heating controller is communicatively connected to the heating rod and the temperature sensor respectively; the temperature sensors are provided both in the screed plate and on the rammer.
[0014] The heating controller is a prior art. The coordinated work of the heating controller and the temperature sensor is used to achieve functions such as controlling the heating temperature, maintaining the temperature constant, and preheating before the paving work. The advantage of this is that since different paving materials have different tolerable temperatures, controllable heating temperature can adapt to different paving works of paving materials.
[0015] Preferably, a plurality of the heating rods are evenly distributed in both the screed plate and the groove.
[0016] The uniform arrangement of multiple heating rods acting together on the screed plate and the ram significantly shortens the heat transfer time, not only accelerating the distribution of heat energy but also enhancing the overall heating efficiency, enabling the screed plate and the ram to quickly and evenly reach the ideal working temperature.
[0017] Preferably, each of the heating rods is individually connected to a power supply circuit, and each power supply circuit is provided with an overload protection element.
[0018] An overload protection element, such as an air switch, is installed in each power supply circuit. When an overload occurs in the circuit, the air switch automatically disconnects to play a safety protection role. Through the circuit protection mechanism, even if one of the heating rods encounters an overload situation, the corresponding power supply circuit will automatically disconnect, while the power supply circuits of other heating rods are not affected and can continue to work normally. This fault isolation strategy ensures that even in the case of partial failure of some heating rods, due to the high heat transfer performance of the heat-conducting coating, the screed plate and the ram can still maintain the necessary temperature, guaranteeing the continuity and efficiency of the paving work.
[0019] Preferably, both the generator and the heating controller are arranged inside the paver.
[0020] All components are integrated into the internal structure of the paver, eliminating the inconvenience of frequently moving the generator and the heating controller due to the limitation of the wire length during the operation of the paver, allowing the operator to more conveniently observe and control the working state of the heating rods in real time, thus ensuring the efficient operation and stability of the heating system. In addition, the internal integrated layout also improves the operation safety and maintenance convenience of the equipment. Due to the fixed positions of the generator and the heating controller, the complexity of on-site wiring is reduced, the potential safety hazards during the construction process are lowered, and it also facilitates quick fault diagnosis and repair.
[0021] In a second aspect, a paver includes a hopper, a conveyor belt, and a spiral distributor, and further includes the paver screeding device.
[0022] The paver with the above-mentioned paver screeding device can avoid adhesion of asphalt mixture through the heated screed plate and ram, improve the overall quality of the paving layer, and reduce the uneven raveling phenomenon on the surface of the paving layer. At the same time, even in cold weather, it can ensure the heating efficiency and ensure that the construction progress is not affected.
[0023] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0024] 1. The utility model realizes the high efficiency and uniformity of heat transfer by applying a heat-conducting coating with high thermal conductivity to the heating process of the screed board and the rammer. With its good heat conduction performance, the heat-conducting coating ensures that heat can be quickly and uniformly distributed to all parts of the screed board and the rammer, thus improving the heating efficiency and heating quality.
[0025] 2. The utility model directly heats the heat-conducting coating by using an energized heating rod, converting the traditional gas heating method into a more modern and controllable electric heating method, improving the flexibility and response speed of the heating process, and ensuring the continuity and stability of the heating process.
[0026] 3. The electric heating method reduces the impact on the environment, achieving the goal of ensuring the rapid and uniform heating of the screed board and the rammer while taking environmental protection into account.
[0027] 4. Due to the adoption of the groove design, the protection of the heating rod is considered, reducing the potential impact caused by the impact during the paving process, thus extending the service life of the heating rod and ensuring the continuity and efficiency of the paving operation.
[0028] 5. Due to the adoption of the circuit protection mechanism, the risk of the entire heating system stopping operation due to the overload of a single heating rod is avoided, reducing the problem of asphalt mixture adhesion caused by temperature drop, and thus preventing adverse effects on the overall quality of the paving layer. In addition, this redundant design also improves the reliability and stability of the equipment, enabling the paving operation to proceed smoothly even under unfavorable working conditions. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 is a schematic structural diagram of Embodiment 1;
[0030] Figure 2 is a schematic structural diagram of the rammer in Embodiment 1;
[0031] Figure 3 is a side view of the rammer in Embodiment 1.
[0032] Among them:
[0033] 1, screed board; 2, rammer; 3, heating rod; 4, generator; 5, heat-conducting coating;
[0034] 21, rammer tool rest; 22, rammer punch;
[0035] 211, groove. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0036] In order to make the technical means, creative features, achieved purposes and effects realized by the utility model easy to understand, the present utility model will be further described below in conjunction with specific drawings. However, the present utility model is not limited to the following implemented cases.
[0037] It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the implementation conditions of the present utility model. Therefore, they do not have substantial technical significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the efficacy that the present utility model can generate and the purpose that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model.
[0038] Embodiment 1:
[0039] In a first aspect, as Figure 1 shown, a paver screed device includes a screed board 1 and a rammer 2 connected to the screed board 1, and also includes a generator 4 and a heating rod 3 electrically connected to the generator 4. The generator 4 provides energy for the heating rod 3.
[0040] As Figure 2 shown, the rammer 2 includes a rammer tool holder 21 and a rammer punch 22 connected to the rammer tool holder 21. As Figure 3 shown, the rammer tool holder 21 is provided with a groove 211 for accommodating the heating rod 3, and the heating rod 3 is fixed in the groove 211. A plurality of heating rods 3 are evenly distributed in both the screed board 1 and the groove 211. Heat conducting coatings 5 are provided on the inner surface of the screed board 1 and the rammer 2, and the heating rod 3 heats the heat conducting coatings 5. The heat conducting coatings 5 have a relatively high thermal conductivity to achieve rapid heat conduction. In this embodiment, the heat conducting coating 5 of graphene coating material is preferably used. The graphene coating has extremely high mechanical strength and flexibility, enhancing the wear resistance and impact resistance of the coating. Due to the high thermal conductivity efficiency of the graphene coating material, the heat will be quickly and evenly transferred to the screed board 1 and the rammer 2 that need to be heated.
[0041] The paver screed device further includes a heating controller and a temperature sensor. The heating controller is communicatively connected to the heating rod 3 and the temperature sensor respectively, and temperature sensors are provided on both the screed board 1 and the rammer 2. The collaborative work of the heating controller and the temperature sensor is used to achieve functions such as controlling the heating temperature, maintaining a constant temperature, and preheating before the paving work. At the same time, different paving materials can be dealt with through the heating controller and the temperature sensor during the paving work.
[0042] Each heating rod 3 is separately connected to a power supply circuit, and each power supply circuit is provided with an overload protection element. In this embodiment, an air switch is selected. When an overload phenomenon occurs in the circuit, the air switch automatically disconnects to play a safety protection role. Through the circuit protection mechanism, even if one of the heating rods 3 encounters an overload situation, the corresponding power supply circuit will automatically disconnect, while the power supply circuits of the other heating rods 3 are not affected and can continue to work normally.
[0043] Both the generator 4 and the heating controller are installed inside the paver, eliminating the inconvenience of frequently moving the generator 4 and the heating controller due to the limitation of the wire length during the operation of the paver, allowing the operator to more conveniently observe and control the working state of the heating rod 3 in real time, thus ensuring the efficient operation and stability of the heating system.
[0044] In a second aspect, a paver includes a hopper, a conveyor belt, and a spiral distributor, and further includes a paver screed device. The paver with the above-mentioned paver screed device avoids adhesion of asphalt mixture through the heated screed plate and tamper, improves the overall quality of the paving layer, and reduces the roughing phenomenon of unevenness on the paving layer surface. At the same time, even in cold weather, the heating efficiency can be guaranteed, ensuring that the construction progress is not affected.
Claims
1. A paving machine ironing device, comprising an ironing plate (1) and a rammer (2) connected to the ironing plate (1), characterized in that: It also comprises a generator (4) and a heating rod (3) electrically connected to the generator (4); a thermal conductive coating (5) is provided on the inner surface of the ironing plate (1) and the rammer (2); and the heating rod (3) heats the thermal conductive coating (5).
2. The paving machine ironing device according to claim 1, characterized in that: The rammer (2) comprises a rammer tool holder (21) and a rammer punch (22) connected to the rammer tool holder (21); the heating rod (3) is connected to the rammer tool holder (21).
3. The paving machine ironing device according to claim 2, characterized in that: The rammer tool holder (21) is provided with a groove (211) for accommodating the heating rod (3); the heating rod (3) is fixed in the groove (211).
4. The paving machine ironing device according to claim 1, characterized in that: It also comprises a heating controller and a temperature sensor; the heating controller is respectively connected to the heating rod (3) and the temperature sensor for communication; the temperature sensor is arranged inside the ironing plate (1) and on the rammer (2).
5. The paving machine ironing device according to claim 3, characterized in that: A plurality of heating rods (3) are evenly distributed in the ironing plate (1) and in the groove (211).
6. The paving machine ironing device according to claim 5, characterized in that: Each of the heating rods (3) is individually connected to a power supply circuit, and each of the power supply circuits is provided with an overload protection element.
7. The paving machine ironing device according to claim 4, characterized in that: The generator (4) and the heating controller are both arranged inside the paving machine.
8. A paver, comprising a hopper, a conveyor belt and a spiral distributor, characterized in that: It also includes the paving machine ironing device according to any one of claims 1-7.