Hydraulic bidirectional plate compactor with cooling function

Abstract

The invention relates to a hydraulic bidirectional plate compactor with a cooling function, and belongs to the technical field of building equipment, the hydraulic bidirectional plate compactor comprises a power mechanism and a cooling mechanism, the power mechanism comprises an internal combustion engine and a compactor plate, the output end of the internal combustion engine is in transmission connection with the compactor plate, the cooling mechanism comprises a liquid cooling device and an air cooling device, and the liquid cooling device sleeves the external side of the internal combustion engine; the air cooling device is arranged on the outer side of the liquid cooling device and used for blowing air towards the internal combustion engine, the heat generated by the internal combustion engine is absorbed through the liquid cooling device, heat dissipation is accelerated through airflow generated by the air cooling device, the liquid cooling device is helped to dissipate heat more effectively, and the heat load of the internal combustion engine is further reduced. Heat of the internal combustion engine is taken away and released to the external environment, the temperature of the internal combustion engine is effectively reduced, faults caused by overheating are reduced, the stability of equipment is improved, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of construction equipment, and in particular relates to a hydraulic bidirectional plate compactor with a cooling function. Background Art

[0002] Bidirectional plate compactors are mainly suitable for compacting materials with low adhesion and friction between particles, such as river sand, gravel and asphalt. They are usually divided into internal combustion, electric and hydraulic types.

[0003] For example, the patent document with patent authorization announcement number: CN201695307U, the device adopts a hydraulic reversing operating device and is arranged with a detachable action wheel, which has the advantages of simple structure, good reliability, high operating efficiency and maneuverability, realizes front and rear bidirectional stepless speed change, improves the climbing ability of the vibratory rammer, improves the working conditions of the driver, and the cost is easy to control, and the product has a high cost performance.

[0004] Based on the search of the above patent authorization announcement number and the shortcomings found therein: The internal combustion engine of the existing two-way plate compactor will generate a large amount of heat after long-term use. The internal combustion engine is in a high-temperature environment for a long time and will be damaged due to excessive temperature, thereby reducing the service life of the two-way plate compactor. Summary of the invention

[0005] In order to solve the above-mentioned problems existing in the prior art, the present invention provides a hydraulic bidirectional plate rammer with a cooling function, which solves the problem that the internal combustion engine of the existing bidirectional plate rammer will generate a large amount of heat after long-term use. The internal combustion engine is in a high temperature environment for a long time and will be damaged due to excessive temperature, thereby reducing the service life of the bidirectional plate rammer.

[0006] The purpose of the present invention can be achieved through the following technical solutions: A hydraulic bidirectional plate rammer with a cooling function comprises a power mechanism and a cooling mechanism, wherein the power mechanism comprises an internal combustion engine and a rammer plate, wherein the output end of the internal combustion engine is transmission-connected to the rammer plate, and the cooling mechanism comprises a liquid cooling device and an air cooling device, wherein the liquid cooling device is sleeved on the outside of the internal combustion engine for absorbing the heat of the internal combustion engine and transmitting it outwards, and the air cooling device is arranged on the outside of the liquid cooling device for blowing air toward the internal combustion engine.

[0007] As a preferred technical solution of the present invention, the liquid cooling device includes a metal shell, which half surrounds the outside of the internal combustion engine. A cavity is provided in the metal shell, and the cavity is filled with high-pressure oil.

[0008] As a preferred technical solution of the present invention, a plurality of ventilation holes are provided through the metal shell, and the hole walls of the ventilation holes separate the cavity from the ventilation holes.

[0009] As a preferred technical solution of the present invention, it also includes a protective shell, the internal combustion engine and the liquid cooling device and the air cooling device are all arranged in the protective shell, the tamping plate is arranged on the outside of the bottom side of the protective shell, and the protective shell is provided with a plurality of heat dissipation holes on the side facing the ventilation holes, so that the heat of the internal combustion engine and / or the metal shell can be transferred to the air through the ventilation holes and the heat dissipation holes.

[0010] As a preferred technical solution of the present invention, the air cooling device is a static-eliminating fan, which is used to deliver anti-static cold air, and the air outlet direction of the static-eliminating fan is toward the metal shell.

[0011] As a preferred technical solution of the present invention, the metal shell is composed of a left plate, a right plate and a rear plate, the left plate and the right plate are respectively connected to the left and right sides of the rear plate and are perpendicular to the rear plate, the left plate, the right plate and the rear plate together enclose a U-shaped structural metal shell with openings on the upper side, the lower side and the front side; the internal combustion engine is arranged in the U-shaped cavity of the metal shell, and the left side, the right side and the rear side of the internal combustion engine are respectively connected to the left plate, the right plate and the rear plate through elastic parts; the rear plate is fitted on the protective shell.

[0012] As a preferred technical solution of the present invention, the ventilation holes include a plurality of first through holes penetrating the left plate along the front-to-back direction, and a plurality of second through holes penetrating the right plate along the front-to-back direction. Two static electricity removal fans are provided, facing respectively the openings of the first through holes away from the side of the rear plate and the openings of the second through holes away from the side of the rear plate.

[0013] As a preferred technical solution of the present invention, a handle is connected to one side of the protective shell, and a start button electrically connected to the air cooling device is provided on the handle. When the start button is pressed, the air cooling device is started; when the start button is lifted, the air cooling device is stopped.

[0014] As a preferred technical solution of the present invention, a single-chip microcomputer is installed on the protective shell, and a thermistor is provided on the liquid cooling device and / or the internal combustion engine. Both ends of the thermistor are connected to a voltage measuring device, and the voltage measuring device is used to measure the voltage value at both ends of the thermistor. The thermistor, the single-chip microcomputer, the start button, and the voltage measuring device together form a switchable circuit. The resistance of the thermistor decreases as the ambient temperature increases. The single-chip microcomputer controls the working power of the air cooling device by receiving the electrical signal transmitted by the thermistor; when the start button is lifted, the thermistor, the single-chip microcomputer, the start button, and the voltage measuring device are connected to the liquid cooling device and the thermistor is connected to the liquid cooling device and the liquid cooling device. The switchable circuit formed by the device is in an open circuit state, and the thermistor is not powered; when the start button is pressed, the switchable circuit formed by the thermistor, the single-chip microcomputer, the start button, and the voltage measuring device is in a conducting state, the thermistor is powered and generates an electrical signal to be fed back to the voltage measuring device, and the voltage measuring device feeds back the measurement signal to the single-chip microcomputer. If the feedback information of the measurement signal received by the single-chip microcomputer is that the voltage value across the thermistor becomes smaller, the working power of the air cooling device is increased; if the feedback information of the measurement signal received by the single-chip microcomputer is that the voltage value across the thermistor becomes larger, the working power of the air cooling device is reduced.

[0015] As a preferred technical solution of the present invention, the working power of the air cooling device is 200W-400W.

[0016] The beneficial effects of the present invention are: This solution uses a liquid cooling device to absorb the heat generated by the internal combustion engine, and accelerates the heat dissipation through the airflow generated by the air cooling device, helping the liquid cooling device to dissipate heat more effectively, further reducing the heat load of the internal combustion engine, taking the heat of the internal combustion engine away and releasing it to the external environment, effectively lowering the temperature of the internal combustion engine, reducing failures caused by overheating, improving the stability of the equipment and extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0018] Figure 1 It is a front view of a hydraulic bidirectional plate compactor with cooling function according to the present invention; Figure 2 It is a schematic diagram of the coordination structure of the power mechanism and the cooling mechanism in a hydraulic bidirectional plate compactor with cooling function of the present invention; Figure 3 For the present invention Figure 2 A magnified image of point A; Figure 4 This is a schematic diagram of the circuit structure of a hydraulic bidirectional plate compactor with cooling function according to the present invention; Description of main symbols In the figure: 1. power mechanism; 11. internal combustion engine; 12. ramming plate; 2. cooling mechanism; 21. metal shell; 211. left plate; 2111. first through hole; 212. right plate; 2121. second through hole; 213. rear plate; 2131. third through hole; 22. air cooling device; 3. protective shell; 31. heat dissipation hole; 4. handle; 5. single chip microcomputer; 6. start button; 7. thermistor; 8. voltage measuring device. DETAILED DESCRIPTION

[0019] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0020] See also Figure 1-4 The present embodiment provides a hydraulic bidirectional plate compactor with cooling function, including a power mechanism 1 and a cooling mechanism 2. The power mechanism 1 includes an internal combustion engine 11 and a compactor plate 12. The output end of the internal combustion engine 11 is transmission-connected to the compactor plate 12. The cooling mechanism 2 includes a liquid cooling device and an air cooling device 22. The liquid cooling device is sleeved on the outside of the internal combustion engine 11 to absorb the heat of the internal combustion engine 11 and transmit it to the outside. The air cooling device 22 is arranged on the outside of the liquid cooling device to blow air toward the internal combustion engine 11. Optionally, a heat exchange device can also be connected to the liquid cooling device to promote the transfer of heat from the liquid cooling device to the outside. The heat exchange device belongs to the prior art and will not be described in detail here.

[0021] It is understandable that when the internal combustion engine 11 starts and outputs power, it will drive the tamping plate 12 to work, and the internal combustion engine 11 and the tamping plate 12 are connected by a transmission assembly composed of an eccentric wheel and other components, wherein the transmission assembly is a prior art, and the focus of this solution is on the cooling function of the internal combustion engine 11, and the composition of the transmission assembly is not described here. Furthermore, the internal combustion engine 11 generates a large amount of heat during operation, and this heat is transferred to the liquid cooling device through heat conduction, and the air cooling device 22 accelerates the heat dissipation of the internal combustion engine 11 by blowing air in the direction of the internal combustion engine 11, effectively reducing the temperature of the internal combustion engine 11, reducing failures caused by overheating, and improving the stability of the equipment.

[0022] Furthermore, the liquid cooling device includes a metal shell 21, which is semi-enclosed outside the internal combustion engine 11, and a cavity is provided in the metal shell 21, and the cavity is filled with high-pressure oil. It is understandable that the heat generated by the internal combustion engine 11 is transferred to the high-pressure oil in the cavity through the metal shell 21, and the high-pressure oil continuously absorbs heat in the cavity and is then transported to the outside air through the metal shell 21. As time goes by, the heat generated by the internal combustion engine 11 reaches a balance with the heat released by the air cooling device 22 and the high-pressure oil, and the temperature of the internal combustion engine 11 is maintained in a relatively stable range. It is understandable that the pressure range of the high-pressure oil is above 20MPa, and it has excellent thermal conductivity, can quickly absorb and transfer heat, and ensure that the heat generated by the internal combustion engine 11 can be efficiently transferred to the outside air. The use of high-pressure oil as a cooling medium, combined with the semi-enclosed structure of the metal shell 21, realizes efficient absorption and dispersion of heat, and effectively reduces the temperature of the internal combustion engine 11. Optionally, the high-pressure oil can also be replaced with refrigerant oil.

[0023] Furthermore, a plurality of ventilation holes are provided through the metal shell 21, and the hole wall of the ventilation hole separates the cavity from the ventilation hole. It is understandable that in order to further improve the cooling effect of the internal combustion engine 11 in the hydraulic bidirectional plate compactor, a plurality of ventilation holes are provided through the metal shell 21, aiming to utilize the assistance of the air cooling device 22, through the natural convection or forced convection of the air, to enhance the heat exchange between the high-pressure oil and the external environment, thereby improving the heat dissipation efficiency. Specifically, the ventilation hole passes through the metal shell 21, and its hole wall separates the cavity (containing the high-pressure oil) from the external environment, but allows air to circulate, thereby realizing the heat exchange between the air and the high-pressure oil. The air cooling device 22 generates airflow and blows it toward the direction of the internal combustion engine 11. The heat of the high-pressure oil in the cavity is heat-exchanged with the airflow passing through the hole wall of the ventilation hole. The airflow passing through absorbs the heat and then discharges it to the external environment through the ventilation hole. While the airflow takes away the heat, it also releases the heat to the external environment through the ventilation hole, thereby realizing the efficient transfer of heat.

[0024] Furthermore, it also includes a protective shell 3, the internal combustion engine 11 and the liquid cooling device and the air cooling device 22 are all arranged in the protective shell 3, the ramming plate 12 is arranged on the outside of the bottom side of the protective shell 3, and the side of the protective shell 3 facing the ventilation hole is provided with a plurality of heat dissipation holes 31, so that the heat of the internal combustion engine 11 and / or the metal shell 21 is transferred to the air through the ventilation holes and the heat dissipation holes 31. Optionally, the protective shell 3 is made of metal. The protective shell 3 can prevent external debris, moisture, dust, etc. from entering the interior of the equipment, avoiding damage to the internal combustion engine 11, the liquid cooling device and the air cooling device 22. At the same time, the heat dissipation holes 31 arranged on the protective shell 3 are combined with the ventilation holes to more effectively transfer the heat of the internal combustion engine 11 and the metal shell 21 to the air, thereby improving the heat dissipation efficiency.

[0025] Specifically, the air cooling device 22 is an anti-static fan, which is used to deliver anti-static cold air, and the air outlet direction of the anti-static fan is toward the metal shell 21. It should be explained that the anti-static fan can generate anti-static cold air, effectively neutralize the static electricity accumulated on the metal shell 21 and other components, prevent static electricity discharge from damaging the equipment, and the anti-static fan can also provide cold air while eliminating static electricity, enhance the heat exchange between the metal shell 21 and the high-pressure oil, and improve the heat dissipation efficiency.

[0026] Furthermore, the metal shell 21 is composed of a left plate 211, a right plate 212 and a rear plate 213. The left plate 211 and the right plate 212 are respectively connected to the left and right sides of the rear plate 213 and are perpendicular to the rear plate 213. The left plate 211, the right plate 212 and the rear plate 213 are enclosed together to form a U-shaped metal shell 21 with openings on the upper side, the lower side and the front side; the internal combustion engine 11 is arranged in the U-shaped cavity of the metal shell 21, and the left side, the right side and the rear side of the internal combustion engine 11 are respectively connected to the left plate 211, the right plate 212 and the rear plate 213 through elastic parts; the rear plate 213 is fitted on the protective shell 3. Optionally, the elastic part can be a rubber pad or a spring. It can be understood that the elastic part can effectively absorb the vibration and impact generated by the internal combustion engine 11 during operation, reduce the mechanical stress inside the equipment, and extend the service life of the equipment.

[0027] Specifically, the ventilation holes include a plurality of first through holes 2111 penetrating the left plate 211 along the front-to-back direction, and a plurality of second through holes 2121 penetrating the right plate 212 along the front-to-back direction. Two anti-static fans are provided, facing the opening of the first through hole 2111 away from the rear plate 213 and the opening of the second through hole 2121 away from the rear plate 213. Preferably, the plurality of first through holes 2111 are evenly arranged in the height direction of the left plate 211, and the plurality of second through holes 2121 are evenly arranged in the height direction of the right plate 212. It can be understood that the first through hole 2111 and the second through hole 2121 are respectively penetrating the left plate 211 and the right plate 212 along the front-to-back direction to form a heat dissipation channel. The uniform arrangement of the ventilation holes in the height direction ensures the uniformity of heat dissipation. The two anti-static fans are respectively facing the openings of the first through hole 2111 and the second through hole 2121, and the anti-static cold wind is used to effectively neutralize the electrostatic charge on the metal shell 21, while accelerating the flow of the heat dissipation airflow. Preferably, a plurality of third through holes 2131 penetrating along the front-to-back direction are provided on the rear plate 213 , and the plurality of third through holes 2131 are evenly arranged on the rear plate 213 , so that the airflow for heat dissipation is smoother.

[0028] Furthermore, a handle 4 is connected to one side of the protective shell 3, and a start button 6 electrically connected to the air cooling device 22 is provided on the handle 4. When the start button 6 is pressed, the air cooling device 22 is started; when the start button 6 is lifted, the air cooling device 22 is stopped. The user can control the moving direction of the hydraulic bidirectional plate rammer through the handle 4, and control the working state of the air cooling device 22 through the start button 6, ensuring that the user can control the start and stop of the air cooling device 22 at any time, avoiding safety hazards caused by accidental start or stop, and allowing the user to flexibly control the working state of the air cooling device 22 according to actual needs to adapt to different working environments and task requirements.

[0029] Furthermore, a single-chip microcomputer 5 is installed on the protective shell 3, and a thermistor 7 is provided on the liquid cooling device and / or the internal combustion engine 11. The two ends of the thermistor 7 are connected to a voltage measuring device 8. The voltage measuring device 8 is used to measure the voltage value at both ends of the thermistor 7. The thermistor 7, the single-chip microcomputer 5, the start button 6, and the voltage measuring device 8 together form a switchable circuit. The resistance of the thermistor 7 decreases as the ambient temperature increases. The single-chip microcomputer 5 controls the working power of the air cooling device 22 by receiving the electrical signal transmitted by the thermistor 7; when the start button 6 is lifted, the thermistor 7, the single-chip microcomputer 5, the start button 6, and the voltage measuring device 8 form a switchable circuit. The switchable circuit is in an open circuit state, and the thermistor 7 is not energized; when the start button 6 is pressed, the switchable circuit composed of the thermistor 7, the single-chip microcomputer 5, the start button 6, and the voltage measuring device 8 is in a conducting state, the thermistor 7 is energized and generates an electrical signal to be fed back to the voltage measuring device 8, and the voltage measuring device 8 feeds back the measurement signal to the single-chip microcomputer 5. If the feedback information of the measurement signal received by the single-chip microcomputer 5 is that the voltage value across the thermistor 7 becomes smaller, the working power of the air cooling device 22 is increased; if the feedback information of the measurement signal received by the single-chip microcomputer 5 is that the voltage value across the thermistor 7 becomes larger, the working power of the air cooling device 22 is reduced. This embodiment integrates the single-chip microcomputer 5, the thermistor 7, the start button 6, and the voltage measuring device 8 to construct a switchable intelligent control system, which can automatically adjust the working power of the air cooling device 22 according to the actual ambient temperature, ensuring that the hydraulic bidirectional plate rammer can maintain the best heat dissipation effect under different working conditions. In a feasible embodiment, the user presses the start button 6, the switch circuit is turned on, the thermistor 7 is energized and generates an electrical signal, the voltage measuring device 8 measures the voltage value across the thermistor 7, and feeds the measurement signal back to the single-chip microcomputer 5. The single-chip microcomputer 5 calculates the current ambient temperature through a preset algorithm based on the voltage signal fed back by the voltage measuring device 8, and adjusts the working power of the air cooling device 22 according to the calculated ambient temperature. If the ambient temperature rises, the single-chip microcomputer 5 will increase the working power of the air cooling device 22 to improve the heat dissipation efficiency; if the ambient temperature decreases, the single-chip microcomputer 5 will reduce the working power of the air cooling device 22 to save energy. When the user lifts the start button 6, the switch circuit is opened, the thermistor 7 is not energized, and the system stops working.

[0030] Specifically, the working power of the air cooling device 22 is 200W-400W. The working power range of 200W-400W can ensure that the air cooling device 22 provides sufficient heat dissipation capacity under different ambient temperatures while avoiding excessive energy consumption.

[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A hydraulic bidirectional plate compactor with cooling function, characterized in that: It includes a power mechanism and a cooling mechanism, the power mechanism includes an internal combustion engine and a ramming plate, the output end of the internal combustion engine is transmission-connected to the ramming plate, the cooling mechanism includes a liquid cooling device and an air cooling device, the liquid cooling device is sleeved on the outside of the internal combustion engine, and is used to absorb the heat of the internal combustion engine and transmit it to the outside, and the air cooling device is arranged on the outside of the liquid cooling device, and is used to blow air toward the internal combustion engine.

2. The hydraulic bidirectional plate compactor with cooling function according to claim 1, characterized in that: The liquid cooling device comprises a metal shell, which half surrounds the outside of the internal combustion engine. A cavity is arranged in the metal shell, and the cavity is filled with high-pressure oil.

3. The hydraulic bidirectional plate compactor with cooling function according to claim 2, characterized in that: The metal shell is provided with a plurality of ventilation holes, and the hole walls of the ventilation holes separate the cavity from the ventilation holes.

4. The hydraulic bidirectional plate compactor with cooling function according to claim 3, characterized in that: It also includes a protective shell, the internal combustion engine and the liquid cooling device and the air cooling device are all arranged in the protective shell, the tamping plate is arranged on the outside of the bottom side of the protective shell, and the protective shell is provided with a plurality of heat dissipation holes on the side facing the ventilation holes, so that the heat of the internal combustion engine and / or the metal shell can be transferred to the air through the ventilation holes and the heat dissipation holes.

5. The hydraulic bidirectional plate compactor with cooling function according to claim 4, characterized in that: The air cooling device is a static-eliminating fan, which is used to deliver anti-static cold air, and the air outlet direction of the static-eliminating fan is toward the metal shell.

6. The hydraulic bidirectional plate compactor with cooling function according to claim 5, characterized in that: The metal shell is composed of a left plate, a right plate and a rear plate, the left plate and the right plate are respectively connected to the left and right sides of the rear plate and are perpendicular to the rear plate, the left plate, the right plate and the rear plate together enclose a U-shaped metal shell with openings on the upper side, the lower side and the front side; the internal combustion engine is arranged in the U-shaped cavity of the metal shell, and the left side, the right side and the rear side of the internal combustion engine are respectively connected to the left plate, the right plate and the rear plate through elastic parts; the rear plate is fitted on the protective shell.

7. The hydraulic bidirectional plate compactor with cooling function according to claim 6, characterized in that: The ventilation holes include a plurality of first through holes penetrating the left plate along the front-to-back direction, and a plurality of second through holes penetrating the right plate along the front-to-back direction. Two anti-static fans are provided, facing respectively the openings of the first through holes away from the side of the rear plate and the openings of the second through holes away from the side of the rear plate.

8. The hydraulic bidirectional plate compactor with cooling function according to claim 7, characterized in that: A handle is connected to one side of the protective shell, and a start button electrically connected to the air cooling device is provided on the handle. When the start button is pressed, the air cooling device is started; when the start button is lifted, the air cooling device is stopped.

9. The hydraulic bidirectional plate compactor with cooling function according to claim 8, characterized in that: A single chip microcomputer is installed on the protective shell, and a thermistor is provided on the liquid cooling device and / or the internal combustion engine. Both ends of the thermistor are connected to a voltage measuring device, and the voltage measuring device is used to measure the voltage value at both ends of the thermistor. The thermistor, the single chip microcomputer, the start button, and the voltage measuring device together form a switchable circuit. The resistance of the thermistor decreases as the ambient temperature increases. The single chip microcomputer controls the working power of the air cooling device by receiving the electrical signal transmitted by the thermistor. When the start button is lifted, the switchable circuit formed by the thermistor, the single chip microcomputer, the start button, and the voltage measuring device The circuit is in an open circuit state, and the thermistor is not powered; when the start button is pressed, the switchable circuit composed of the thermistor, the single-chip microcomputer, the start button, and the voltage measuring device is in an on state, the thermistor is powered and generates an electrical signal to be fed back to the voltage measuring device, and the voltage measuring device feeds back the measurement signal to the single-chip microcomputer. If the feedback information of the measurement signal received by the single-chip microcomputer is that the voltage value across the thermistor becomes smaller, the working power of the air cooling device is increased; if the feedback information of the measurement signal received by the single-chip microcomputer is that the voltage value across the thermistor becomes larger, the working power of the air cooling device is reduced.

10. The hydraulic bidirectional plate compactor with cooling function according to claim 9, characterized in that: The working power of the air cooling device is 200W-400W.

Images