Heating system for rotary butter pool of excavator
By designing a system that uses engine heat to heat the butter pool, it solves the problem of poor butter lubrication in the low -temperature environment, reducing costs and improving the engine cooling efficiency.
Patent Information
- Application Number
- CN202411752557.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-01-28
AI Technical Summary
In low-temperature environments, grease in the excavator's butter pool is prone to freeze, resulting in poor lubrication, and replacing the low-temperature grade grease will increase costs.
A excavator turning the butter heating system is designed, and the heat generated by the excavator engine work is used to heal the butter in the butter pool through the thermal set, heat exchange device and temperature sensing device.
Effectively solve the problem of poor butter lubrication in low -temperature environments, avoid increasing the cost of replacing the low -temperature brand lubricating fat, and reducing the energy consumption of the engine cooling system by using engine residual heat.
Smart Images
Figure CN119374017A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of butter heating, and in particular to a heating system for a rotary butter pool of an excavator. Background Art
[0002] The grease pool on the excavator stores grease, commonly known as butter. Generally, when the excavator is working, the pins and sleeves of its large and small arms and buckets will move relative to each other. These parts need grease to reduce friction and prevent wear. Butter can be regarded as a sponge full of lubricating oil, which can discharge lubricating oil under mechanical stress and lubricate mechanical parts.
[0003] Grease, according to its characteristics, its lubrication effect is closely related to its state, and its state is closely related to temperature. Grease at room temperature is easy to freeze in cold areas in winter, and the rotation lubrication is poor when the cold car is started. If it is replaced with low-temperature grease, the grease will be too thin in summer or when the temperature is high, which may easily lead to poor lubrication of moving parts. At the same time, since the cost of low-temperature grease is higher than that of room-temperature grease, the cost of the whole machine increases. Summary of the invention
[0004] In order to overcome at least one of the defects of the prior art described above, the present invention provides a heating system for a rotary grease pool of an excavator, which solves the problem of poor lubrication of the grease in the prior art when working in a low temperature environment.
[0005] The technical solution adopted by the present invention to solve the problem is:
[0006] A heating system for a rotary butter pool of an excavator, comprising a heat collecting device for collecting heat generated by the operation of an engine of the excavator, a heat exchanging device arranged in the butter pool, and a temperature sensing device for obtaining the temperature of the butter; the heat collecting device is connected and conducted to the heat exchanging device;
[0007] When the temperature sensing device senses that the butter temperature is lower than the set temperature, the heat collecting device is started to collect the heat generated by the engine and transfer the heat to the heat exchanging device, and the heat exchanging device exchanges heat with the butter to heat the butter.
[0008] Further: the heat collection device comprises a liquid conduit connected to a liquid pump of a cooling system of the engine, the liquid conduit comprising a first liquid conduit connected to an outlet of the liquid pump and a second liquid conduit connected to an inlet of the liquid pump;
[0009] The other end of the first liquid conduit is connected to and communicated with the inlet of the heat exchange device, and the other end of the second liquid conduit is connected to and communicated with the outlet of the heat exchange device.
[0010] Furthermore: a first valve is provided on the first liquid guiding tube.
[0011] Furthermore: a second valve is provided on the second liquid guiding tube.
[0012] Furthermore: the butter pool includes an oil inlet and an oil outlet, and the temperature sensing device includes a first sensor, and the first sensor is arranged at the oil inlet or the oil outlet or inside the butter pool.
[0013] Furthermore: the temperature sensing device includes a second sensor, the second sensor is arranged at the oil inlet, and the first sensor is arranged at the oil outlet or inside the butter pool.
[0014] Furthermore: the heat exchange device includes a heat exchange tube group arranged in the butter pool, the inlet of the heat exchange tube group extends from the oil outlet and is connected to the heat collection device, and the outlet of the heat exchange tube group extends from the oil inlet and is connected to the heat collection device.
[0015] Furthermore: the heat exchange tube group includes a main inlet pipe, a main outlet pipe and a plurality of heat exchange branch pipes, the plurality of heat exchange branch pipes are arranged in parallel and are connected between the main inlet pipe and the main outlet pipe, the main inlet pipe extends from the oil outlet, and the main inlet pipe extends from the oil inlet.
[0016] Furthermore: a plurality of the heat exchange branch pipes are fixed on the top surface of the butter pool.
[0017] Further: the butter pool is mainly formed by connecting the rotating platform bottom plate, the rotating support plate, the first butter pool enclosure plate and the second butter pool enclosure plate end to end in sequence; a sealing rubber ring is provided at the connection position between the rotating platform bottom plate and the second butter pool enclosure plate;
[0018] The heat exchange device is fixedly mounted on the bottom plate of the rotary platform, and the oil inlet and the oil outlet are both arranged on the bottom plate of the rotary platform.
[0019] In summary, the excavator rotary butter pool heating system provided by the present invention has the following technical effects:
[0020] By utilizing the heat generated by the excavator's own engine to heat the butter, the problem of poor lubrication effect of butter when starting a cold car in a low-temperature environment is effectively solved.
[0021] In addition, by utilizing the waste heat of the excavator's own engine through the excavator's rotary butter pool heating system, the engine can be cooled well and the energy consumption of the engine cooling system can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 The present invention is a schematic diagram of the connection between an excavator rotary butter pool heating system and an engine cooling system.
[0023] Figure 2 This is a schematic diagram of the installation of the heat exchange device in the butter pool.
[0024] The meanings of the reference numerals are as follows:
[0025] 1. Engine; 2. Liquid pump; 3. First liquid guide pipe; 4. Second liquid guide pipe; 5. First valve; 6. Grease pool; 61. Rotary platform bottom plate; 62. Rotary support plate; 63. First butter pool enclosure; 64. Second butter pool enclosure; 65. Sealing rubber ring; 66. Oil inlet; 67. Oil outlet; 71. First sensor; 72. Second sensor; 8. Heat exchange device; 81. Heat exchange branch pipe. DETAILED DESCRIPTION
[0026] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0027] In the description of the present invention, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.
[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.
[0029] See also Figure 1 and Figure 2 The present invention discloses a heating system for a rotary butter pool of an excavator.
[0030] A heating system for a rotary butter pool of an excavator includes a heat collecting device, a heat exchanging device 8 and a temperature sensing device, wherein the heat collecting device is connected and conducted to the heat exchanging device 8. When the heating system for the rotary butter pool of the excavator is working, the heat collecting device is used to collect the heat generated by the engine 1 of the excavator, and the heat exchanging device 8 is arranged in the butter pool 6 and exchanges heat with the butter pool 6 to directly or indirectly heat the butter in the butter pool 6. The temperature sensing device directly or indirectly obtains the temperature of the butter, and the heating system for the rotary butter pool of the excavator controls whether the heating system for the rotary butter pool of the excavator is working or not according to the temperature obtained by the temperature sensing device.
[0031] When the temperature sensing device senses that the butter temperature is lower than the set temperature, the heat collecting device is started to collect the heat generated by the engine 1 and transfer the heat to the heat exchange device 8, and the heat exchange device 8 exchanges heat with the butter to heat the butter. When the temperature sensing device senses that the butter temperature is not lower than the set temperature, the excavator rotary butter pool heating system is controlled to stop working.
[0032] When the excavator is started, the engine 1 on the excavator starts working, and the temperature of the engine 1 rises after starting. Generally, the engine 1 can rise to a higher temperature within a few minutes after starting. At the same time, the waste heat generated by the engine 1 is collected by the heat collecting device, and then the waste heat is transported to the heat exchange device 8 through the heat collecting device. The heat exchange device 8 is installed in the butter pool 6. Heat exchange occurs in the butter pool 6, and the butter in the butter pool 6 is directly or indirectly heated, so that the butter is heated, which facilitates the flow of the butter and lubrication of the lubrication parts.
[0033] After the excavator has been working for a period of time, the overall temperature of the excavator rises. The butter temperature rises with the temperature of the entire excavator on the one hand, and with the temperature of the lubricating parts through which the butter passes on the other hand. When the butter temperature rises to the set value, the excavator rotary butter pool heating system can stop heating the butter.
[0034] In the above-mentioned excavator rotary grease pool heating system, the waste heat from the working of the engine 1 is collected and utilized by a heat collecting device, which realizes the heating of the grease on the one hand, so that in a low-temperature environment, after the cold car is started, the grease can quickly heat up and meet the lubrication requirements, ensuring the lubrication requirements of the excavator and ensuring the normal operation of the excavator. Through this excavator rotary grease pool heating system, the replacement and switching of low-temperature brand grease is avoided, the increase in the cost of lubricating grease is avoided, and the problem of poor lubrication effect of lubricating grease in seasons with higher temperatures after replacing low-temperature brand grease is avoided. In addition, by utilizing the waste heat from the working of the engine 1, the working time of the cooling system of the engine 1 is shortened, the cooling time of the engine 1 is reduced, and the cooling cost of the engine 1 is reduced.
[0035] In the present technical solution, the cooling system of the engine 1 generally adopts liquid cooling or air cooling or a combination of liquid cooling and air cooling, and liquid cooling is more commonly used. In the present solution, based on the liquid cooling solution adopted by the cooling system of the engine 1, the heat in the coolant of the engine 1 is collected to heat the butter. In the cooling system of the engine 1, the coolant circulation is driven by the liquid pump 2 to achieve the cooling of the engine 1. During the normal cooling process of the engine 1, the liquid pump 2 drives the coolant to circulate between the engine 1 and a heat exchange structure. The heat exchange structure dissipates the heat in the coolant, and then the coolant continues to return to the engine 1 to exchange heat with the engine 1 and absorb the heat on the engine 1. In the present solution, in order to reduce costs and simplify the structure, the liquid pump 2 on the cooling system of the engine 1 is directly used to drive the coolant to exchange heat with the butter.
[0036] The heat collecting device includes a liquid conduit connected to a liquid pump 2 of a cooling system of an engine 1, and the liquid conduit includes a first liquid conduit 3 connected to an outlet of the liquid pump 2 and a second liquid conduit 4 connected to an inlet of the liquid pump 2. The other end of the first liquid conduit 3 is connected to and communicated with an inlet of a heat exchange device 8, and the other end of the second liquid conduit 4 is connected to and communicated with an outlet of the heat exchange device 8.
[0037] The coolant heated by the engine 1 is driven by the liquid pump 2 to the heat exchange device 8 in the butter pool 6, and the heat exchange device 8 realizes direct or indirect heat exchange with the butter to heat the butter and ensure that the butter can quickly achieve lubrication effect after the excavator is started cold.
[0038] The first liquid conduit 3 and the second liquid conduit 4 are respectively connected to the inlet and outlet of the liquid pump 2, so that the liquid pump 2 drives the coolant to circulate between the heat exchange device 8 on the engine 1 and the butter pool 6, thereby heating the butter and cooling the engine 1 at the same time.
[0039] At the initial stage of cold start of the excavator, the temperature of the engine 1 will not be too high, so the temperature of the coolant for cooling the engine 1 will not be too high. Heating the butter will not cause the butter temperature to be too high, and will not affect the cooling of the engine 1. In seasons with lower temperatures, at the initial stage of cold start of the excavator, the excavator rotary butter pool heating system is used to heat the butter and cool the engine 1, which has good effect and low cost, and can meet the butter heating requirements and the engine 1 cooling requirements.
[0040] When the excavator rotary butter pool heating system is working, the liquid pump 2 drives the coolant to enter the heat exchange device 8 through the first liquid conduit 3. After the coolant exchanges heat in the butter pool 6, it enters the liquid pump 2 through the second liquid conduit 4 and enters the engine 1 again to cool down the engine 1. At the same time, the coolant heats up again to prepare for the next butter heating. Of course, after the butter temperature rises, it does not need to be heated by the engine 1 coolant. At this time, the liquid pump 2 drives the coolant to flow through the heat exchange structure in the engine 1 cooling system to achieve cooling of the coolant and prepare for the next cooling of the engine 1.
[0041] In this technical solution, a first valve 5 is provided on the first liquid conduit 3. The first valve 5 controls the on-off of the first liquid conduit 3, and controls whether the first conduit flows through the first liquid conduit 3 through the first valve 5, and controls whether the coolant of the engine 1 is used to heat the butter.
[0042] The first valve 5 can be a manually controlled valve or an automatically controlled valve. Preferably, an automatically controlled valve is used to automatically control the butter temperature, simplify the operation, and accurately control the opening and closing.
[0043] A second valve is provided on the second liquid conduit 4. The second valve controls the on and off of the second liquid conduit 4. The second valve is a supplement to the first valve 5. The second valve can control the liquid pump 2 to avoid the backflow of the coolant in the liquid pump 2, thereby ensuring that the cooling system of the engine 1 and the heat exchange device 8 work normally.
[0044] The second valve can be a manual control valve or an automatic control valve. Preferably, an automatic control valve is used to automatically control the butter temperature, simplify the operation, and accurately control the opening and closing.
[0045] In the present technical solution, the butter pool 6 includes an oil inlet 66 and an oil outlet 67, and the temperature sensing device includes a first sensor 71, which is arranged at the oil inlet 66 or the oil outlet 67 or inside the butter pool 6. The first sensor 71 obtains the temperature inside the butter pool 6, and according to the temperature inside the butter pool 6, the opening and closing of the excavator rotary butter pool heating system is automatically controlled, thereby simplifying the operation and reducing the control error.
[0046] Because the space in the butter pool 6 is limited, the temperature field in the butter pool 6 is relatively uniform, and butter is grease and flows slowly. In order to extend the service life of the first sensor 71, the first sensor 71 is generally set on the inner wall of the oil inlet 66 or the inner wall of the oil outlet 67 or the top surface inside the butter pool 6, and try to avoid the first sensor 71 and the butter being immersed in the butter or in contact with the butter for a long time. Therefore, the first sensor 71 obtains the temperature in the butter pool 6, and the temperature in the butter pool 6 is equivalent to the butter temperature. The obtained temperature in the butter pool 6 can be used as the butter temperature.
[0047] In the present technical solution, the temperature sensing device includes a second sensor 72 , which is disposed at the oil inlet 66 , and a first sensor 71 is disposed at the oil outlet 67 or inside the butter pool 6 .
[0048] The second sensor 72 is a backup and supplement to the first sensor 71, and is set at a different position from the first sensor 71 to obtain the temperature in the butter pool 6. Generally, the temperature value obtained by the second sensor 72 should be equivalent to that obtained by the first sensor 71. If the difference between the temperature values obtained by the two is large, the first sensor 71 and the second sensor 72 need to be repaired to ensure that the temperature sensing device can accurately obtain the temperature in the butter pool 6 and ensure the reliable control and accurate opening and closing of the excavator rotary butter pool heating system.
[0049] In addition, similar to the first sensor 71, butter is a lubricating grease and flows slowly. In order to extend the service life of the second sensor 72, the second sensor 72 is generally arranged on the inner wall of the oil inlet 66 or the inner wall of the oil outlet 67 or the top surface of the butter pool 6, and the second sensor 72 is prevented from being immersed in the butter or in contact with the butter for a long time. If the first sensor 71 is arranged at the oil outlet 67, the second sensor 72 is arranged at the oil inlet 66.
[0050] In this technical solution, the heat exchange device 8 includes a heat exchange tube group arranged in the butter pool 6, the inlet of the heat exchange tube group extends from the oil outlet 67 and is connected to the heat collecting device, and the outlet of the heat exchange tube group extends from the oil inlet 66 and is connected to the heat collecting device.
[0051] The inlet and outlet of the heat exchange tube group both extend out of the butter pool 6, which is convenient for connection and conduction with the first liquid guide tube 3 and the second liquid guide tube 4. In addition, the inlet of the heat exchange tube group extends from the oil outlet 67, and the outlet of the heat exchange tube group extends from the oil inlet 66. The coolant of the engine 1 flows in the opposite direction to the butter in the butter pool 6. When the coolant of the engine 1 enters the butter pool 6, the butter that is about to flow out is first heated to ensure that the butter that is about to flow out is quickly heated and obtains the required temperature as much as possible, thereby improving the heating effect of the butter, especially improving the heating effect of the butter that is about to participate in the lubrication work, ensuring the normal operation of the butter, especially at the beginning of the engine 1, so that more butter that has been heated and whose temperature rises quickly participates in the lubrication work.
[0052] In the present technical solution, the heat exchange tube group includes a main inlet pipe, a main outlet pipe and a plurality of heat exchange branch pipes 81. The plurality of heat exchange branch pipes 81 are arranged in parallel and are connected between the main inlet pipe and the main outlet pipe. The main inlet pipe extends from the oil outlet 67, and the main inlet pipe extends from the oil inlet.
[0053] The heat exchange tube group includes a plurality of heat exchange branch pipes 81 arranged in parallel, which increases the heat exchange area, accelerates the heat exchange between the engine 1 coolant and the butter pool 6, and makes the butter in the butter pool 6 heat up quickly.
[0054] In the present technical solution, a plurality of heat exchange branch pipes 81 are fixed on the top surface of the butter pool 6 to avoid contact or long-term contact between the heat exchange branch pipes 81 and the butter, thereby extending the service life of the heat exchange branch pipes 81 and ensuring uniform heating of the butter in the butter pool 6.
[0055] In the present technical solution, the butter pool 6 is mainly formed by connecting the rotating platform bottom plate 61, the rotating support plate 62, the first butter pool enclosure 63 and the second butter pool enclosure 64 in sequence end to end. A sealing rubber ring 65 is provided at the connection position of the rotating platform bottom plate 61 and the second butter pool enclosure 64. The heat exchange device 8 is fixed on the rotating platform bottom plate 61, and the oil inlet 66 and the oil outlet 67 are both provided on the rotating platform bottom plate 61. The first butter pool enclosure 63 is the bottom plate of the butter pool 6, and the rotating platform bottom plate 61 is the top plate of the butter pool 6. The sealing rubber ring 65 realizes the sealing of the butter pool 6.
[0056] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.
Claims
1. An excavator rotary butter pool heating system, characterized in that: It includes a heat collecting device for collecting heat generated by the engine of the excavator, a heat exchanging device arranged in the butter pool, and a temperature sensing device for obtaining the temperature of the butter; the heat collecting device is connected and conducted with the heat exchanging device; When the temperature sensing device senses that the butter temperature is lower than the set temperature, the heat collecting device is started to collect the heat generated by the engine and transfer the heat to the heat exchanging device, and the heat exchanging device exchanges heat with the butter to heat the butter.
2. The excavator rotary butter pool heating system according to claim 1 is characterized in that: The heat collecting device comprises a liquid conduit connected to a liquid pump of a cooling system of the engine, wherein the liquid conduit comprises a first liquid conduit connected to an outlet of the liquid pump and a second liquid conduit connected to an inlet of the liquid pump; The other end of the first liquid conduit is connected to and communicated with the inlet of the heat exchange device, and the other end of the second liquid conduit is connected to and communicated with the outlet of the heat exchange device.
3. The excavator rotary butter pool heating system according to claim 2 is characterized in that: The first liquid guiding tube is provided with a first valve.
4. The excavator rotary butter pool heating system according to claim 2, characterized in that: The second liquid guiding tube is provided with a second valve.
5. The excavator rotary butter pool heating system according to claim 1, characterized in that: The butter pool includes an oil inlet and an oil outlet, and the temperature sensing device includes a first sensor, which is arranged at the oil inlet or the oil outlet or inside the butter pool.
6. The excavator rotary butter pool heating system according to claim 5, characterized in that: The temperature sensing device includes a second sensor, the second sensor is arranged at the oil inlet, and the first sensor is arranged at the oil outlet or inside the butter pool.
7. The excavator rotary butter pool heating system according to claim 5, characterized in that: The heat exchange device includes a heat exchange tube group arranged in the butter pool, the inlet of the heat exchange tube group extends from the oil outlet and is connected to the heat collection device, and the outlet of the heat exchange tube group extends from the oil inlet and is connected to the heat collection device.
8. The excavator rotary butter pool heating system according to claim 7, characterized in that: The heat exchange tube group includes a main inlet pipe, a main outlet pipe and a plurality of heat exchange branch pipes, the plurality of heat exchange branch pipes are arranged in parallel and are connected between the main inlet pipe and the main outlet pipe, the main inlet pipe extends from the oil outlet, and the main inlet pipe extends from the oil inlet.
9. The excavator rotary butter pool heating system according to claim 8, characterized in that: The plurality of heat exchange branch pipes are all fixedly arranged on the top surface of the butter pool.
10. The excavator rotary butter pool heating system according to claim 5, characterized in that: The butter pool is mainly formed by connecting the rotating platform bottom plate, the rotating support plate, the first butter pool enclosure plate and the second butter pool enclosure plate end to end in sequence; a sealing rubber ring is provided at the connection position between the rotating platform bottom plate and the second butter pool enclosure plate; The heat exchange device is fixedly mounted on the bottom plate of the rotary platform, and the oil inlet and the oil outlet are both arranged on the bottom plate of the rotary platform.