Track rollers, track roller systems and operating machinery

Abstract

The present invention relates to the technical field of engineering machinery, and provides a supporting roller, a supporting roller system, and an operating machine. The supporting roller includes a lubricating oil passage, a lubricating oil inlet respectively connected to the lubricating oil passage and an oil tank outlet, a lubricating oil outlet respectively connected to the lubricating oil passage and an oil tank return port, and a one-way valve. The lubricating oil passage is provided on the axle of the supporting roller, and is connected to the gap between the wheel body, the axle, the first end cover, the second end cover, and a floating oil seal of the supporting roller. The lubricating oil inlet is provided on the first end cover or the wheel body, and the lubricating oil outlet is provided on the second end cover or the wheel body. The one-way valve is provided on the axle. When the pressure in the lubricating oil passage is greater than a first preset pressure of the one-way valve, the lubricating oil outlet communicates with the lubricating oil passage. The lubricating oil inlet, the lubricating oil passage, the lubricating oil outlet, and the oil tank form a circulating oil circuit, and the one-way valve can reduce the internal pressure of the wheel body, thereby increasing the service life of the supporting roller, ensuring the flow of lubricating oil, and reducing the temperature inside the supporting roller.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery, and in particular to a track wheel, a track wheel system and an operating machine. Background Art

[0002] Track rollers are an important component of the traveling mechanism of hydraulic engineering machinery and are widely used in hydraulic excavators, pavers, scrapers, and bulldozers. The main function of track rollers is to support the entire machine and its load.

[0003] Common track rollers are primarily composed of a wheel body, axle, end caps, floating oil seals, and bushings, and are crucial components of the travel and support systems of crawler-type engineering machinery. Prolonged travel, unbalanced loads, or friction and heating of track roller components can increase the internal pressure of the track roller body. Excessive internal pressure can cause the floating oil seal to fail, leading to lubricant leakage or damage to the wheel body, resulting in the track roller not functioning properly.

[0004] In the prior art, the pressure inside the wheel body is monitored by a pressure sensor. When the pressure is greater than a set threshold, the controller adjusts the flow rate allocated to the travel reducer by the main pump of the engineering machinery, thereby reducing the travel speed to relieve the pressure inside the wheel body.

[0005] However, in the prior art, there are many reasons why the internal pressure of the wheel body is high, and simply reducing the traveling speed of the engineering machinery cannot completely reduce the internal pressure of the wheel body. Summary of the Invention

[0006] The present invention provides a track wheel, a track wheel system and an operating machine, which are used to solve the defect in the prior art that only reducing the traveling speed of the engineering machine cannot completely reduce the internal pressure of the track wheel body.

[0007] The present invention provides a track wheel, comprising:

[0008] a lubricating oil passage, provided on the axle of the track roller, the lubricating oil passage being in communication with the gap between the wheel body of the track roller, the axle, the first end cover, the second end cover and the floating oil seal;

[0009] a lubricating oil inlet, provided on the first end cover or the wheel body, the lubricating oil inlet being respectively used to communicate with the lubricating oil channel and the oil outlet of the oil tank;

[0010] a lubricating oil outlet, provided on the second end cover or the wheel body, the lubricating oil outlet being respectively used to communicate with the lubricating oil channel and the oil return port of the oil tank;

[0011] A one-way valve for controlling the connection and disconnection between the lubricating oil outlet and the lubricating oil passage is provided on the wheel axle. When the pressure of the lubricating oil in the lubricating oil passage is greater than a first preset pressure of the one-way valve, the lubricating oil outlet is connected to the lubricating oil passage.

[0012] According to a track roller provided by the present invention, the lubricating oil passage comprises:

[0013] an oil chamber, arranged between the wheel body and the wheel axle;

[0014] a first oil passage, wherein both ends of the first oil passage are respectively connected to the lubricating oil inlet and the oil chamber;

[0015] The second oil passage has two ends respectively connected to the oil chamber and the lubricating oil outlet.

[0016] A track roller provided according to the present invention further includes:

[0017] The third oil passage is provided on the wheel axle or the second end cover. The third oil passage is communicated with the lubricating oil outlet and the lubricating oil passage respectively. The one-way valve is used to control the on-off of the third oil passage.

[0018] According to a track roller provided by the present invention, the one-way valve includes:

[0019] a valve body movably disposed in the third oil passage, wherein the diameter of the valve body is larger than the diameter of the oil outlet end of the lubricating oil passage;

[0020] an elastic member, wherein a first end of the elastic member is fixedly connected to the wheel axle or the second end cover, and a second end of the elastic member is connected to the valve body;

[0021] When the pressure of the lubricating oil in the lubricating oil passage is lower than the first preset pressure of the elastic member, the valve body abuts against the oil outlet end of the lubricating oil passage to close the oil outlet end of the lubricating oil passage;

[0022] When the pressure of the lubricating oil in the lubricating oil passage is greater than the first preset pressure of the elastic member, the valve body moves away from the oil outlet end of the lubricating oil passage, so that the third oil passage connects the lubricating oil outlet and the lubricating oil passage.

[0023] A track roller provided according to the present invention further includes:

[0024] a first sealing ring, disposed between the first end cover and the wheel axle;

[0025] The second sealing ring is arranged between the second end cover and the wheel axle.

[0026] The present invention also provides a track roller system, comprising:

[0027] A track roller as described in any one of the above;

[0028] tank;

[0029] An oil pump, wherein the oil inlet of the oil pump is connected to the oil outlet of the oil tank, and the oil outlet of the oil pump is connected to the lubricating oil inlet of the supporting wheel.

[0030] A track roller system according to the present invention further includes:

[0031] a pressure detection element, used for detecting the pressure of the lubricating oil in the lubricating oil channel of the supporting wheel;

[0032] A controller is connected to the pressure detection element and the oil pump for communication, and the controller controls the start and stop of the oil pump according to the detection signal of the pressure detection element.

[0033] A track roller system according to the present invention further includes:

[0034] The filter is arranged between the lubricating oil outlet of the supporting wheel and the oil inlet of the oil tank.

[0035] A track roller system according to the present invention further includes:

[0036] A temperature detection element is provided at the lubricating oil outlet of the track wheel, and is used to detect the temperature of the lubricating oil.

[0037] The present invention further provides a working machine, comprising the track wheel as described in any one of the above items or the track wheel system as described in any one of the above items.

[0038] The supporting wheel, supporting wheel system and working machinery provided by the present invention include a lubricating oil channel, a lubricating oil inlet, a lubricating oil outlet and a one-way valve. The lubricating oil channel is arranged on the axle of the supporting wheel, and the lubricating oil channel is connected with the gap between the wheel body, the axle, the first end cover, the second end cover and the floating oil seal of the supporting wheel, so that the lubricating oil in the lubricating oil channel enters the gap and lubricates the wheel body, the axle, the first end cover, the second end cover and the floating oil seal; the lubricating oil inlet is arranged on the first end cover or the wheel body, and the lubricating oil inlet is respectively used to communicate with the lubricating oil channel and the oil outlet of the oil tank, so as to lubricate the oil. The oil outlet is arranged on the second end cover or the wheel body, and the lubricating oil outlet is used to communicate with the lubricating oil channel and the oil return port of the oil tank respectively. The lubricating oil inlet can supply lubricating oil to enter the lubricating oil channel, and the lubricating oil outlet can supply the lubricating oil in the lubricating oil channel to flow back to the oil tank; and a one-way valve is provided on the wheel axle, and the one-way valve is used to control the connection and disconnection of the lubricating oil outlet and the lubricating oil channel. When the lubricating oil pressure in the lubricating oil channel is greater than the first preset pressure of the one-way valve, the lubricating oil outlet is connected with the lubricating oil channel, so that the lubricating oil in the lubricating oil channel flows out of the supporting wheel, thereby preventing the pressure inside the wheel body of the supporting wheel from being too high.

[0039] With this arrangement, a circulating oil circuit can be formed with the oil tank through the lubricating oil inlet, lubricating oil channel and lubricating oil outlet, and the lubricating oil in the lubricating oil channel of the supporting wheel can be regularly discharged through the one-way valve, which can not only reduce the internal pressure of the wheel body, prevent the internal pressure of the wheel body from being too high, and improve the service life of the supporting wheel, but also realize the flow of lubricating oil to take away the high-temperature lubricating oil in the supporting wheel, thereby reducing the temperature of the wheel body, wheel axle, end cover, floating oil seal and sliding bearing, and can effectively avoid failure of the floating oil seal and oil leakage, thereby improving the service life of the supporting wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0041] Figure 1 This is a schematic diagram of the internal structure of the track wheel provided by the present invention;

[0042] Figure 2 It is a structural schematic diagram of the track roller system provided by the present invention.

[0043] Reference numerals:

[0044] 1. Axle; 2. Wheel body; 3. Bushing;

[0045] 4. First end cover; 5. Second end cover; 6. Floating oil seal;

[0046] 7. Lubricating oil inlet; 8. Lubricating oil outlet; 9. First oil channel;

[0047] 10. Second oil passage; 11. Oil chamber; 12. Valve body;

[0048] 13. Elastic member; 14. First screw plug; 15. Second screw plug;

[0049] 16. First sealing ring; 17. Second sealing ring; 100. Track roller;

[0050] 101. Fuel tank; 102. Filter; 103. Controller;

[0051] 104. Oil pump; 105. Pressure detection element; 106. Temperature detection element;

[0052] 107. Alarm. DETAILED DESCRIPTION

[0053] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0054] The following combination Figures 1 to 2 The present invention describes a track wheel, a track wheel system, and a working machine.

[0055] like Figure 1 As shown, the track roller provided by the present invention may include a lubricating oil passage, a lubricating oil inlet 7, a lubricating oil outlet 8 and a one-way valve.

[0056] The track roller 100 further includes an axle 1, a wheel body 2, a first end cap 4, and a second end cap 5. The wheel body 2 can be rotatably mounted on the axle 1 via a bushing 3. The first end cap 4 and the second end cap 5 can be located on either side of the wheel body 2, and the first end cap 4 and the second end cap 5 can be fixedly mounted on the axle 1. A floating oil seal 6 can be provided between the first end cap 4 and the second end cap 5 and the wheel body 2 to prevent lubricating oil leakage and the intrusion of external contaminants such as mud and sand into the track roller 100. Here, the first end cap 4 and the second end cap 5 can be the left and right end caps of the track roller, respectively.

[0057] Among them, the lubricating oil channel is arranged on the axle 1 of the supporting wheel, and the lubricating oil channel is connected with the gap between the wheel body 2, the axle 1, the first end cover 4, the second end cover 5 and the floating oil seal 6 of the supporting wheel, so that the lubricating oil in the lubricating oil channel enters the gap and lubricates the wheel body 2, the axle 1, the first end cover 4, the second end cover 5 and the floating oil seal 6.

[0058] In addition, the lubricating oil inlet 7 is provided on the first end cover 4 or the wheel body 2, and the lubricating oil inlet 7 is used to communicate with the lubricating oil channel and the oil outlet of the oil tank respectively. The lubricating oil outlet 8 is provided on the second end cover 5 or the wheel body 2, and the lubricating oil outlet 8 is used to communicate with the lubricating oil channel and the oil return port of the oil tank respectively. The lubricating oil inlet 7 can supply lubricating oil to enter the lubricating oil channel, and the lubricating oil outlet 8 can supply lubricating oil in the lubricating oil channel to flow back to the oil tank; in this way, a circulating oil circuit can be formed with the oil tank 101 through the lubricating oil inlet 7, the lubricating oil channel, the lubricating oil outlet 8 and the oil tank 101.

[0059] In addition, a one-way valve may be provided on the axle 1, and the one-way valve may be used to control the connection and disconnection between the lubricating oil outlet 8 and the lubricating oil channel, that is, the one-way valve is used to control the connection state between the lubricating oil outlet 8 and the lubricating oil channel.

[0060] When the pressure of the lubricating oil in the lubricating oil passage is greater than the first preset pressure of the one-way valve, the lubricating oil outlet 8 can be connected to the lubricating oil passage, so that the high-temperature lubricating oil in the supporting wheel 100 can flow back into the oil tank 101 through the lubricating oil outlet 8. In this way, the pressure in the lubricating oil passage of the supporting wheel 100 can be prevented from being too high.

[0061] With such arrangement, a circulating oil circuit is formed through the lubricating oil inlet 7, the lubricating oil channel, the lubricating oil outlet 8 and the oil tank 101, and the lubricating oil in the lubricating oil channel of the supporting wheel can be discharged regularly through the one-way valve, which can reduce the internal pressure of the wheel body, prevent the internal pressure of the wheel body from being too high, and improve the service life of the supporting wheel, and can also realize the flow of lubricating oil to take away the high-temperature lubricating oil in the supporting wheel 100, thereby reducing the temperature of the wheel body 2, the wheel axle 1, the end cover, the floating oil seal 6 and the sliding bearing, and can effectively avoid the failure and oil leakage of the floating oil seal 6, thereby improving the service life of the supporting wheel 100; and can also update the lubricating oil in the supporting wheel 100, which is beneficial to improving the cleanliness of the lubricating oil in the supporting wheel 100.

[0062] In an optional embodiment of the present invention, the lubricating oil passage may include an oil chamber 11 , a first oil passage 9 and a second oil passage 10 .

[0063] The oil chamber 11 can be provided between the wheel body 2 and the axle 1 . Specifically, an annular groove can be provided on the inner wall of the wheel body 2 . The annular groove is provided around the axle 1 , and the annular groove cooperates with the axle 1 to form the oil chamber 11 .

[0064] Both the first oil passage 9 and the second oil passage 10 are disposed within the wheel axle 1. The ends of the first oil passage 9 are respectively connected to the lubricating oil inlet 7 and the oil chamber 11. The ends of the second oil passage 10 are respectively connected to the oil chamber 11 and the lubricating oil outlet 8. In this way, the lubricating oil that enters the lubricating oil passages through the lubricating oil inlet 7 can be partially stored in the oil chamber 11.

[0065] In an optional embodiment of the present invention, the track roller 100 may further include a third oil passage. The third oil passage may be provided on the axle 1 or the second end cap 5. The third oil passage may be connected to the lubricating oil outlet 8 and the lubricating oil passage, respectively. A one-way valve may be used to control the opening and closing of the third oil passage, thereby controlling the connection between the lubricating oil outlet 8 and the lubricating oil passage. In this way, the one-way valve may be used to control the periodic flow of lubricating oil within the track roller 100 back to the oil tank 101, thereby achieving regular renewal of the lubricating oil and ensuring that the lubricating oil within the track roller 100 lubricates all components requiring lubrication.

[0066] In an optional embodiment, the one-way valve may include a valve body 12 and an elastic member 13, wherein the valve body 12 can be movably arranged in the third oil channel, the first end of the elastic member 13 can be fixedly connected to the wheel axle 1 or the second end cover 5, and the second end of the elastic member 13 can be connected to the valve body 12.

[0067] Furthermore, the diameter of the valve body 12 may be larger than the diameter of the oil outlet of the lubricating oil passage, so that the valve body 12 can close the oil outlet of the lubricating oil passage. Here, the diameter of the third oil passage may be larger than the diameter of the oil outlet of the lubricating oil passage.

[0068] Furthermore, when the pressure of the lubricating oil in the lubricating oil passage is less than the first preset pressure of the elastic member 13, the valve body 12 abuts against the oil outlet of the lubricating oil passage to seal the oil outlet of the lubricating oil passage. This prevents the lubricating oil in the roller 100 from flowing out, thereby improving the lubrication effect of the lubricating oil in the roller 100 on the components requiring lubrication.

[0069] When the pressure of the lubricating oil in the lubricating oil channel is greater than the first preset pressure of the elastic member 13, the valve body 12 slides in the third oil channel under the action of the pressure of the lubricating oil and moves away from the oil outlet end of the lubricating oil channel, so that the third oil channel is connected with the oil outlet end of the lubricating oil channel, thereby connecting the lubricating oil outlet 8 and the lubricating oil channel through the third oil channel, so that the lubricating oil in the supporting wheel 100 can flow back into the oil tank 101.

[0070] In this way, the one-way valve can prevent the pressure in the track roller 100 from being too high, and can also achieve regular renewal of the lubricating oil in the track roller 100.

[0071] In an optional embodiment, in order to facilitate manufacturing and reduce manufacturing costs, both the first oil passage 9 and the second oil passage 10 may be L-shaped oil passages.

[0072] Among them, the oil inlet end of the first oil channel 9 is located at the first end of the wheel axle 1, and the oil outlet end of the first oil channel 9 is connected to the oil chamber 11. Here, in order to prevent the lubricating oil from flowing out of the oil inlet end of the first oil channel 9, a first screw plug 14 or a plug is provided at the oil inlet end of the wheel axle 1. The first screw plug 14 or the plug can close the oil inlet end of the first oil channel 9.

[0073] Specifically, the oil inlet end of the first oil channel 9 may be provided with an internal thread, the first screw plug 14 may be provided with an external thread, and the first screw plug 14 may be threadedly connected to the oil inlet end of the first oil channel 9 to close the oil inlet end of the first oil channel 9.

[0074] Here, the first oil passage 9 may be provided with an oil inlet near the oil inlet end. The oil inlet may be provided on the side of the first oil passage 9 , and the lubricating oil inlet 7 may be connected to the oil inlet of the first oil passage 9 .

[0075] In addition, a third oil passage can be set on the axle 1, and the third oil passage can be coaxially arranged with the horizontal part of the second oil passage 10, and the first end of the third oil passage is connected to the second oil passage 10, and the second end of the third oil passage can be located at the second end of the axle 1.

[0076] Here, in order to prevent the lubricating oil from leaking from the third oil passage, a second screw plug 15 may be provided on the axle 1 , and the second screw plug 15 can close the second end of the third oil passage.

[0077] Specifically, the second end of the third oil passage may be provided with an internal thread, the second screw plug 15 may be provided with an external thread, and the second screw plug 15 may be threadedly connected to the second end of the third oil passage to close the second end of the third oil passage.

[0078] In this embodiment, the first end of the elastic member 13 of the one-way valve may be fixedly connected to the second screw plug 15 .

[0079] It should be noted that the elastic member 13 may be a spring.

[0080] In an optional embodiment, the first end cover 4 and the second end cover 5 may be connected to the axle 1 via fixing pins respectively.

[0081] In an optional embodiment, in order to further prevent lubricating oil leakage, the track wheel 100 may further include a first sealing ring 16 and a second sealing ring 17. The first sealing ring 16 may be arranged between the first end cover 4 and the axle 1, and the second sealing ring may be arranged between the second end cover 5 and the axle 1.

[0082] Here, both the first sealing ring 16 and the second sealing ring 17 may be O-rings.

[0083] The following describes the track roller system provided by the present invention. The track roller system described below and the track roller system described above can be referenced to each other.

[0084] The track roller system provided by the present invention may include the track roller 100 as described in any one of the above embodiments.

[0085] The beneficial effects achieved by the track roller system provided by the present invention are consistent with the beneficial effects achieved by the track roller provided by the present invention, and will not be described in detail here.

[0086] In an optional embodiment, if Figure 2 As shown, the supporting wheel system may further include an oil tank 101 and an oil pump 104. The oil inlet of the oil pump 104 may be connected to the oil outlet of the oil tank 101, and the oil outlet of the oil pump 104 may be connected to the lubricating oil inlet 7 of the supporting wheel 100 to pump the lubricating oil into the supporting wheel 100 to provide lubricating oil for the supporting wheel 100.

[0087] In an optional embodiment of the present invention, the track roller system may further include a pressure detection element 105 and a controller 103 .

[0088] Among them, the pressure detection element 105 can be used to detect the pressure of the lubricating oil in the lubricating oil channel of the supporting wheel 100; the controller 103 can be communicated with the pressure detection element 105 and the oil pump 104 respectively, and the controller 103 can control the start and stop of the oil pump 104 according to the detection signal of the pressure detection element 105.

[0089] Specifically, when the detection signal of the pressure detection element 105 is that the pressure of the lubricating oil in the lubricating oil channel is less than the second preset pressure, it indicates that the lubricating oil of the supporting wheel 100 is leaking. The controller 103 controls the oil pump 104 to stop, so that the oil pump 104 stops supplying lubricating oil to the supporting wheel 100.

[0090] It should be noted that the second preset pressure is lower than the first preset pressure.

[0091] In an optional embodiment, the pressure detection element 105 can be used to detect the pressure of the lubricating oil in the first oil channel 9 of the supporting wheel 100 or the pressure of the lubricating oil in the oil chamber 11, so as to determine whether the floating oil seal 6 of the supporting wheel 100 fails and leaks oil by detecting the pressure of the lubricating oil in the supporting wheel 100.

[0092] In an optional embodiment, the pressure detection element 105 may be a pressure sensor.

[0093] In an optional embodiment of the present invention, the supporting roller system may further include an alarm 107, which may be communicatively connected to the controller 103, and the controller 103 may control the alarm 107 to sound an alarm based on the detection signal of the pressure detection element 105, so as to remind the driver or operator, so that the driver or operator can know in time that the supporting roller 100 has a fault, so that the driver or operator can quickly repair the supporting roller 100.

[0094] Specifically, when the detection signal of the pressure detection element 105 indicates that the pressure of the lubricating oil in the lubricating oil channel is less than the second preset pressure, the controller 103 controls the alarm 107 to sound an alarm.

[0095] In an optional embodiment, the alarm 107 may be a buzzer or an indicator light.

[0096] In an optional embodiment of the present invention, the track roller system may further include a temperature detection element 106 . The temperature detection element 106 may be provided at the lubricating oil outlet 8 of the track roller 100 , and the temperature detection element 106 may be used to detect the temperature of the lubricating oil.

[0097] In an optional embodiment, the temperature detection element 106 may be in communication with the controller 103 , and the controller 103 may control the start and stop of the oil pump 104 according to a detection signal from the temperature detection element 106 .

[0098] Specifically, when the temperature detection element 106 detects that the temperature of the lubricating oil flowing out of the lubricating oil outlet 8 is greater than the preset temperature, it indicates that the wheel body 2 of the supporting wheel 100 is working abnormally. At this time, the controller 103 controls the oil pump 104 to stop so that the operator can inspect and repair the supporting wheel 100.

[0099] In addition, the controller 103 can control the alarm 107 to sound an alarm based on the detection signal of the temperature detection element 106.

[0100] Specifically, when the temperature detection element 106 detects that the temperature of the lubricating oil flowing out of the lubricating oil outlet 8 is greater than a preset temperature, the controller 103 controls the alarm 107 to sound an alarm so that the operator can promptly know that the temperature of the lubricating oil is too high or the supporting wheel 100 is working abnormally.

[0101] Here, the temperature detection element 106 may be a temperature sensor.

[0102] In an optional embodiment, the supporting wheel system may further include a display, which may be communicatively connected to the controller 103. The controller 103 may transmit the detection signals of the pressure detection element 105 and the temperature detection element 106 to the display for display, thereby facilitating observation by the operator.

[0103] It should be noted that the operator can determine whether the abnormality or failure of the supporting wheel 100 is caused by too high oil temperature of the lubricating oil or too low oil pressure (i.e., lubricating oil leakage) based on the information displayed on the display and the alarm information of the alarm 107.

[0104] Here, the display may be a display screen in a cab of the working machine, and the controller may be a controller of the working machine.

[0105] In an optional embodiment of the present invention, the roller system may further include a filter 102, which may be disposed between the lubricating oil outlet 8 of the roller 100 and the oil inlet of the oil tank 101. Thus, the lubricating oil flowing out of the roller 100 may be filtered through the filter 102 to remove metal debris and the like in the lubricating oil, thereby improving the cleanliness of the lubricating oil and extending the service life of the roller 100.

[0106] In this embodiment, the lubricating oil inlet 7 of the supporting wheel 100 and the oil outlet of the oil tank 101 can be connected through a first pipeline, and the oil pump 104 can be set on the first pipeline; the lubricating oil outlet 8 of the supporting wheel 100 and the oil return port of the oil tank 101 can be connected through a second pipeline, and the filter 102 can be set on the second pipeline.

[0107] The working machine provided by the present invention is described below. The working machine described below and the supporting wheel or supporting wheel system described above can be referred to in correspondence with each other.

[0108] The present invention provides a working machine, which may include the track roller 100 described in any one of the above embodiments or the track roller system described in any one of the above embodiments.

[0109] The beneficial effects achieved by the operating machinery provided by the present invention are consistent with the beneficial effects achieved by the supporting wheel or the supporting wheel system provided by the present invention, and will not be described in detail here.

[0110] It should be noted that the above-mentioned operating machinery may be an excavator, a tractor, a bulldozer, a loader, a pipelayer, a drilling machine, a rock drilling rig, or other engineering machinery.

[0111] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0112] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A track roller, characterized in that: include: a lubricating oil passage, provided on the axle of the track roller, the lubricating oil passage being in communication with the gap between the wheel body of the track roller, the axle, the first end cover, the second end cover and the floating oil seal; a lubricating oil inlet, provided on the first end cover or the wheel body, the lubricating oil inlet being respectively used to communicate with the lubricating oil channel and the oil outlet of the oil tank; a lubricating oil outlet, provided on the second end cover or the wheel body, the lubricating oil outlet being respectively used to communicate with the lubricating oil channel and the oil return port of the oil tank; a one-way valve for controlling the connection between the lubricating oil outlet and the lubricating oil passage, disposed on the wheel axle, wherein when the pressure of the lubricating oil in the lubricating oil passage is greater than a first preset pressure of the one-way valve, the lubricating oil outlet is connected to the lubricating oil passage; The lubricating oil passage comprises: an oil chamber, arranged between the wheel body and the wheel axle; a first oil passage, wherein both ends of the first oil passage are respectively connected to the lubricating oil inlet and the oil chamber; a second oil passage, wherein both ends of the second oil passage are respectively connected to the oil chamber and the lubricating oil outlet; a third oil passage, provided on the wheel axle or the second end cover, the third oil passage being in communication with the lubricating oil outlet and the lubricating oil passage respectively, the one-way valve being used to control the on-off of the third oil passage; Wherein, the one-way valve comprises: a valve body movably disposed in the third oil passage, wherein the diameter of the valve body is larger than the diameter of the oil outlet end of the lubricating oil passage; an elastic member, wherein a first end of the elastic member is fixedly connected to the wheel axle or the second end cover, and a second end of the elastic member is connected to the valve body; When the pressure of the lubricating oil in the lubricating oil passage is lower than the first preset pressure of the elastic member, the valve body abuts against the oil outlet end of the lubricating oil passage to close the oil outlet end of the lubricating oil passage; When the pressure of the lubricating oil in the lubricating oil passage is greater than the first preset pressure of the elastic member, the valve body moves away from the oil outlet end of the lubricating oil passage, so that the third oil passage is connected to the lubricating oil outlet and the lubricating oil passage, thereby allowing the high-temperature lubricating oil in the supporting wheel to flow back to the oil tank through the lubricating oil outlet, thereby preventing the pressure in the lubricating oil passage of the supporting wheel from being too high; The supporting wheel also includes: A temperature detection element is provided at the lubricating oil outlet of the track wheel, and is used to detect the temperature of the lubricating oil.

2. The track roller according to claim 1, characterized in that: Also includes: a first sealing ring, disposed between the first end cover and the wheel axle; The second sealing ring is arranged between the second end cover and the wheel axle.

3. A track roller system, characterized in that: include: The track roller according to claim 1 or 2; tank; An oil pump, wherein the oil inlet of the oil pump is connected to the oil outlet of the oil tank, and the oil outlet of the oil pump is connected to the lubricating oil inlet of the supporting wheel.

4. The track roller system according to claim 3, characterized in that: Also includes: a pressure detection element, used for detecting the pressure of the lubricating oil in the lubricating oil channel of the supporting wheel; A controller is connected to the pressure detection element and the oil pump for communication, and the controller controls the start and stop of the oil pump according to the detection signal of the pressure detection element.

5. The track roller system according to claim 3, characterized in that: Also includes: The filter is arranged between the lubricating oil outlet of the supporting wheel and the oil inlet of the oil tank.

6. A working machine, characterized in that: It comprises the track wheel according to claim 1 or 2 or the track wheel system according to any one of claims 3 to 5.

Images