Lubrication system and crane

Abstract

The application relates to the crane technical field and discloses a lubricating system and a crane, wherein the lubricating system comprises an oil storage tank and a distribution oil circuit. The oil storage tank is provided with an oil storage cavity for storing lubricating grease, and the oil storage tank is provided with an oil supply port communicated with the oil storage cavity; the distribution oil circuit is provided with a total oil inlet and a plurality of oil outlets, and each oil outlet is used for being connected with a lubricating point of a suspension oil cylinder, a lubricating point of an axle and a lubricating point of a steering rocker arm. The oil storage tank in the application can be connected with the lubricating points of the suspension oil cylinder, the axle and the steering rocker arm through the distribution oil circuit, so that the lubricating grease in the oil storage tank can be guided to each lubricating point. Compared with the traditional manual lubrication, the setting mode improves the maintenance efficiency, the lubricating points are not easy to be missed, the comprehensiveness and reliability of the maintenance of each lubricating point are remarkably improved, and the operation stability and service life of the chassis system of the crane are improved.

Description

Technical Field

[0001] This application relates to the field of crane technology, specifically to a lubrication system and a crane. Background Technology

[0002] In cranes, especially in the chassis systems of all-terrain cranes, the reliability of the suspension and steering systems is crucial. Components in the suspension system, such as the suspension cylinders and axles, and in the steering system, such as the steering arms, contain multiple moving parts due to their functional requirements, resulting in numerous lubrication points and a high frequency of maintenance.

[0003] Currently, the maintenance of the aforementioned lubrication points mostly relies on manual lubrication by adding grease to each lubrication point. This method has low maintenance efficiency and makes it easy to overlook lubrication points. Utility Model Content

[0004] This application provides a lubrication system and a crane to solve or improve the problem of low maintenance efficiency of lubrication points in existing suspension systems (such as suspension cylinders and axles) and steering systems (such as steering arms).

[0005] In a first aspect, this application provides a lubrication system, including an oil reservoir and a distribution oil circuit. The oil reservoir has an oil storage chamber for storing lubricating grease, and the oil reservoir is provided with an oil supply port communicating with the oil storage chamber; the distribution oil circuit has a main oil inlet and multiple branch oil outlets, the main oil inlet being connected to the oil supply port, and each of the branch oil outlets being respectively used to connect to the lubrication points of the suspension cylinder, the axle, and the steering rocker arm.

[0006] Beneficial effects: By integrating the oil reservoir with the distribution oil circuit, the oil reservoir can be connected to the lubrication points of the suspension cylinder, the axle, and the steering rocker arm through the distribution oil circuit. This allows the lubricating grease in the oil reservoir to be directed to each lubrication point. While ensuring effective maintenance of each lubrication point, this setup improves maintenance efficiency compared to traditional manual lubrication, and is less likely to miss any lubrication points. It significantly enhances the comprehensiveness and reliability of maintenance for each lubrication point, and strengthens the operational stability and service life of the crane chassis system.

[0007] In an alternative embodiment, a drive pump is also included, disposed in the distribution oil passage, to drive the lubricating grease to flow in the distribution oil passage.

[0008] Beneficial effects: By installing a drive pump in the distribution oil circuit, the operation of the drive pump can actively promote a more stable flow of lubricating grease in the distribution oil circuit, ensuring that the lubricating grease can be delivered to each lubrication point, and effectively preventing lubrication failure caused by poor flow or insufficient pressure of lubricating grease.

[0009] In one alternative embodiment, a controller and a timer are further included. The controller is disposed on the drive pump and electrically connected to the drive pump; the timer is disposed on the controller and electrically connected to the controller to cause the drive pump to start and stop periodically.

[0010] Beneficial effects: By adding a controller and timer electrically connected to the drive pump, and using the timer to set intervals, the controller can control the drive pump to automatically start and stop at preset intervals. This allows for regular and relatively precise replenishment of lubricating grease to various lubrication points without human intervention. This setup not only prevents missed lubrication operations due to human error but also reduces the workload of operators. Furthermore, by setting the lubrication cycle, a more consistent lubrication frequency can be maintained, thereby extending the service life of the suspension cylinders, axles, and steering arms.

[0011] In one alternative embodiment, the timer includes a first adjusting device capable of adjusting the start-up cycle of the drive pump; and / or, the timer includes a second adjusting device capable of adjusting the single start-up time of the drive pump.

[0012] Beneficial effects: By setting up a first adjusting device to regulate the start-up cycle of the drive pump, and a second adjusting device to regulate the single start-up time of the drive pump, the lubrication system can easily adjust the lubrication frequency and intensity to meet different usage requirements. This setup not only avoids excessive waste of lubricating grease but also ensures sufficient lubrication at all lubrication points, significantly improving the accuracy and economy of lubrication operations.

[0013] In one optional embodiment, the system further includes a level sensor and an alarm device. The level sensor is disposed inside the oil tank and is electrically connected to the controller; the alarm device is electrically connected to the controller and is activated when the level sensor detects a preset level.

[0014] Beneficial effects: By installing a level sensor in the oil reservoir, when the lubricating grease in the reservoir is insufficient to meet lubrication requirements, the level sensor can send a signal to the controller, which will then activate the alarm device to remind the operator to replenish the lubricating grease in the reservoir in a timely manner, ensuring normal lubrication of each lubrication point.

[0015] In one alternative embodiment, the alarm device is an indicator light; and / or, the alarm device is a speaker.

[0016] Beneficial effect: By setting the alarm device as an indicator light and / or a speaker, it is easy to remind operators to replenish the lubricating grease in the oil tank in a timely manner.

[0017] In one alternative implementation, a manual switch is also included, which is electrically connected to the controller.

[0018] Beneficial effects: By setting a manual switch, operators can control the start and stop of the drive pump manually. This allows the lubrication system to not only perform automatic periodic lubrication but also trigger instant lubrication as needed or stop the drive pump at any time, enhancing the operational flexibility and human intervention capability of the lubrication system. Even in the event of a timer failure, the lubrication points can still be supplied with grease, thus improving the reliability of the lubrication system.

[0019] In one optional embodiment, the distribution oil circuit includes a first distributor, which is connected to the oil supply port via a main oil circuit. The main oil inlet is located in the main oil circuit. The first distributor has two first distribution oil outlets. One of the first distribution oil outlets is used to connect to the lubrication point of the suspension cylinder and the lubrication point of the axle, and the other first distribution oil outlet is used to connect to the lubrication point of the steering rocker arm.

[0020] Beneficial effects: By setting up a first distributor and connecting the lubrication points of the suspension cylinder and axle, as well as the lubrication points of the steering rocker arm, to different first distributor outlets, it is possible to provide oil to different lubrication points in zones, thereby facilitating the layout of each oil circuit and preventing mutual interference between oil circuits.

[0021] In an optional embodiment, the oil distribution circuit further includes two second distributors, each second distributor being connected to each of the first distribution outlets via a first branch oil circuit; each second distributor has at least one second distribution outlet, each second distribution outlet is connected to a second branch oil circuit, and each second branch oil circuit is provided with the distribution outlet.

[0022] Beneficial effects: By setting a second distributor and multiple second distribution oil outlets on the second distributor, each second distribution oil outlet is connected to a lubrication point through a second branch oil circuit, which further enables zoned oil supply to different lubrication points, thereby facilitating the layout of each oil circuit and preventing mutual interference between oil circuits.

[0023] Secondly, this application provides a crane, including a suspension cylinder, an axle, and a steering arm; and the aforementioned lubrication system, wherein each of the oil outlets is connected to a lubrication point of the suspension cylinder, a lubrication point of the axle, and a lubrication point of the steering arm.

[0024] Beneficial effects: The crane features the aforementioned lubrication system. By integrating the oil reservoir with the distribution oil circuit, the oil reservoir can be connected to the lubrication points of the suspension cylinder, the axle, and the steering rocker arm. This allows the lubricating grease in the reservoir to be directed to each lubrication point. Compared to traditional manual lubrication, this system improves maintenance efficiency and reduces the likelihood of missing any points, significantly enhancing the comprehensiveness and reliability of lubrication point maintenance. This strengthens the operational stability and service life of the crane chassis system, thereby improving the overall operational stability and service life of the crane. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the lubrication system according to an embodiment of this application; Figure 2 This is a logical diagram illustrating the connection relationship between the timer and the controller in an embodiment of this application; Figure 3 This is a logical diagram illustrating the connection relationship between the liquid level sensor and the controller in an embodiment of this application.

[0027] Explanation of reference numerals in the attached figures: 100. Suspension cylinder; 200. Axle; 300. Steering rocker arm; 1. Oil reservoir; 101. Oil storage chamber; 102. Oil supply port; 2. Oil distribution circuit; 201. Main oil inlet; 202. Branch oil outlet; 21. First distributor; 211. First distribution outlet; 22. Main oil circuit; 23. Second distributor; 231. Second distribution outlet; 24. First branch oil circuit; 25. Second branch oil circuit; 3. Drive pump; 4. Controller; 5. Timer; 51. First timer; 52. Second timer; 501. First regulating device; 502. Second regulating device; 6. Liquid level sensor; 7. Alarm device; 8. Manual switch. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] The following is combined Figures 1 to 3 This describes an embodiment of the present application.

[0030] According to an embodiment of this application, in a first aspect, this application provides a lubrication system applicable to a crane chassis system. The lubrication system includes an oil reservoir 1 and a distribution oil passage 2. The oil reservoir 1 may be generally rectangular box-shaped, having an oil storage chamber 101 for storing lubricating grease. An oil filling port is provided on the oil reservoir 1 to replenish lubricating grease into the oil storage chamber 101. An oil supply port 102 communicating with the oil storage chamber 101 is provided on the oil reservoir 1. The distribution oil passage 2 is used to distribute the lubricating grease in the oil storage chamber 101 to multiple lubrication points. The distribution oil passage 2 has a main oil inlet 201 and multiple branch oil outlets 202. The main oil inlet 201 is connected to the oil supply ports 102, and each branch oil outlet 202 is respectively connected to a lubrication point of the suspension cylinder 100, a lubrication point of the axle 200, and a lubrication point of the steering rocker arm 300.

[0031] First, it should be noted that, as Figure 1 As shown, the suspension cylinder 100, axle 200, and steering rocker arm 300 each have lubrication points requiring lubrication. For example, the suspension cylinder 100 has an upper lubrication hinge point and a lower lubrication hinge point; the axle 200 has an upper lubrication hinge point and a lower lubrication hinge point; and the steering rocker arm 300 has a steering rocker arm lubrication hinge point. Each oil outlet 202 is connected to a corresponding lubrication hinge point to deliver lubricating grease to each lubrication hinge point for lubrication. Of course, in addition to the above-mentioned lubrication points, the suspension cylinder 100, axle 200, and steering rocker arm 300 may have other lubrication points requiring lubrication as needed. By setting each oil outlet 202 to correspond to each lubrication point, the lubrication requirements of each lubrication point can be met.

[0032] In this embodiment, the lubricating grease in the oil reservoir 1 can flow in the distribution oil circuit 2 through manual control or automatic flow at a preset cycle. By integrating the oil reservoir 1 with the distribution oil circuit 2, the oil reservoir 1 can be connected to the lubrication points of the suspension cylinder 100, the axle 200, and the steering rocker arm 300 through the distribution oil circuit 2. This allows the lubricating grease in the oil reservoir 1 to be directed to each lubrication point. While ensuring effective maintenance of each lubrication point, this method improves maintenance efficiency compared to traditional manual lubrication, and is less likely to miss any lubrication points. It significantly improves the comprehensiveness and reliability of maintenance of each lubrication point, and enhances the operational stability and service life of the crane chassis system.

[0033] Optionally, a grease nipple (not shown in the figure) is installed on the oil outlet 202 to discharge lubricating grease to lubricate the lubrication points.

[0034] In one embodiment, to facilitate the flow of lubricating grease within the distribution oil passage 2, the lubrication system further includes a drive pump 3, which is disposed on the distribution oil passage 2 to drive the lubricating grease to flow within the distribution oil passage 2.

[0035] In this embodiment, as Figure 1 As shown, the inlet of the drive pump 3 can be connected to the oil supply port 102 of the oil reservoir 1, and the outlet of the drive pump 3 can be connected to the main oil inlet 201 of the distribution oil circuit 2. Under the action of the drive pump 3, the lubricating grease in the oil reservoir 101 can be pumped into the distribution oil circuit 2, and then supplied to each lubrication point through the distribution oil circuit 2. With this configuration, by setting the drive pump 3 on the distribution oil circuit 2, the operation of the drive pump 3 can actively promote a relatively stable flow of lubricating grease in the distribution oil circuit 2, ensuring that the lubricating grease can be delivered to each lubrication point, and effectively preventing lubrication failure caused by poor lubricating grease flow or insufficient pressure.

[0036] In one embodiment, a controller 4 and a timer 5 are also included. The controller 4 is disposed on the drive pump 3 and is electrically connected to the drive pump 3; the timer 5 is disposed on the controller 4 and is electrically connected to the controller 4, so as to cause the drive pump 3 to start and stop periodically.

[0037] In this embodiment, as Figure 2As shown, controller 4 can be a programmable PLC controller. Controller 4 can be fixed to drive pump 3, or it can be fixed to the crane body. Controller 4 is electrically connected to drive pump 3, thereby controlling the start and stop of drive pump 3. Timer 5 can be set and timed by the operator. Optionally, one timer 5 can be set, which has two timing functions: when the timer 5 reaches a preset start cycle, it sends a signal to controller 4 to start drive pump 3, then the timer 5 restarts the timer, and after a preset time, it sends a signal to controller 4 to shut down drive pump 3. Of course, two timers 5 can also be set. When one timer 5 reaches a preset start cycle, it sends a signal to controller 4 to start drive pump 3. When drive pump 3 starts, the other timer 5 starts the timer, and after a preset time, it sends a signal to controller 4 to shut down drive pump 3.

[0038] Combination Figure 2 As shown, the following explanation uses two timers 5, namely the first timer 51 and the second timer 52, as an example. Specifically, after the lubrication system is powered on, the controller 4 enters standby mode, and the first timer 51 can start timing. When the timing of the first timer 51 reaches the preset start cycle, the first timer 51 can send a start signal to the controller 4. After receiving the signal, the controller 4 can then send a start command to the drive pump 3, connecting the drive pump 3 to the power supply. The drive pump 3 starts working, pumping lubricating grease from the oil tank 1 and delivering it to each lubrication point through the distribution oil circuit 2. At the same time, when the drive pump 3 starts, the second timer 52 starts, beginning to time the duration of this lubrication. When the lubrication duration reaches the preset continuous running time, the second timer 52 can send a stop signal to the controller 4. After receiving the signal, the controller 4 can then send a stop command to the drive pump 3, disconnecting the drive pump 3 from the power supply. Subsequently, the first timer 51 is reset and restarts timing, waiting for the next lubrication operation, thus realizing the periodic automatic lubrication function.

[0039] This configuration, by adding a controller 4 and a timer 5 electrically connected to the drive pump 3, allows the controller 4 to control the drive pump 3, automatically starting and stopping it at preset time intervals. This enables regular and relatively precise replenishment of lubricating grease to various lubrication points without human intervention. It not only prevents missed lubrication operations due to human error but also reduces the workload of operators. Furthermore, by setting a lubrication cycle, a more consistent lubrication frequency can be maintained, thereby extending the service life of the suspension cylinder 100, axle 200, and steering rocker arm 300.

[0040] Optionally, the aforementioned timer 5 can be an independent hardware timing module, which is set outside the controller 4 and fixed on the controller 4, or it can be integrated inside the controller 4 as a time function software module.

[0041] In one embodiment, the timer 5 includes a first adjusting device 501, which is capable of adjusting the start-up cycle of the drive pump 3; and / or, the timer 5 includes a second adjusting device 502, which is capable of adjusting the single start-up time of the drive pump 3.

[0042] In this embodiment, as Figure 2 As shown, when there is one timer 5, the timer 5 can integrate a first adjustment device 501 and a second adjustment device 502, thereby facilitating the adjustment of the start-up cycle and the single start-up time of the drive pump 3. When there are two timers 5, one timer 5 can be equipped with the first adjustment device 501, and the other timer 5 can be equipped with the second adjustment device 502, which similarly facilitates the adjustment of the start-up cycle and the single start-up time of the drive pump 3.

[0043] Of course, besides the above-mentioned settings, timer 5 can also be configured as a single unit, with only the first adjustment device 501 or the second adjustment device 502. When only the first adjustment device 501 is present, timer 5 only has the function of periodic start. In this setting, it can be used in conjunction with manual switch 8, meaning that after the drive pump 3 starts, manual switch 8 needs to be operated manually to turn off the drive pump 3, thus allowing manual control of the single start time of drive pump 3 in each lubrication operation. Alternatively, when only the second adjustment device 502 is present, timer 5 only has the function of a single start time for drive pump 3. In this setting, it can be used in conjunction with manual switch 8, allowing manual control of drive pump 3 to start, and drive pump 3 can work within a preset single start time and automatically shut down after exceeding the preset single start time.

[0044] This configuration allows for adjustment of the start-up cycle of the drive pump 3 via the first adjustment device 501, and the adjustment of the single start-up time of the drive pump 3 via the second adjustment device 502. This facilitates the adjustment of the lubrication frequency and intensity to meet different usage requirements. This design avoids excessive waste of lubricating grease and ensures adequate lubrication at all lubrication points, significantly improving the accuracy and economy of lubrication operations.

[0045] It should be noted that the specific usage of the timer 5 and the control logic with the controller 4 described above are only one specific implementation method of this embodiment. Operators can also make adaptive adjustments to the specific usage of the timer 5 and the control logic with the controller 4 to meet different usage requirements.

[0046] Optionally, the first adjustment device 501 and the second adjustment device 502 can be structures such as operation screens and knobs, which are existing technologies and will not be described in detail here.

[0047] Optionally, the first adjusting device 501 and the second adjusting device 502 can be equipped with a dial knob. By rotating the dial knob, the start-up cycle of the drive pump 3 can be set to 1 hour to 2 hours, and the single start-up time of the drive pump 3 can be set to 2 minutes to 3 minutes. In this way, it can be ensured that the drive pump 3 delivers lubricating grease to each lubrication point every 1 hour to 2 hours, and the delivery time is 2 minutes to 3 minutes. This ensures timely and effective lubrication of the lubrication points, guarantees maintenance quality, and prevents waste of lubricating grease.

[0048] In one embodiment, the lubrication system further includes a level sensor 6 and an alarm device 7. The level sensor 6 is disposed in the oil reservoir 1 and is electrically connected to the controller 4; the alarm device 7 is electrically connected to the controller 4 and can be activated when the level sensor 6 detects a preset level.

[0049] In this embodiment, as Figure 1 , Figure 3 As shown, the level sensor 6 can be one of a float switch, a capacitive probe, or an ultrasonic sensor. The level sensor 6 can detect the level of lubricating grease in the oil tank 1 in real time, and the level sensor 6 is electrically connected to the controller 4. The following description uses a float switch as an example to illustrate the level sensor 6. The float switch is installed in the oil tank 1, and the oil tank 1 is set with a minimum safe level. During the lubrication process of the lubrication system, the controller 4 can continuously or intermittently read the signal from the level sensor 6. When the level of lubricating grease in the oil tank 1 drops to the preset minimum safe level due to continuous consumption, the float switch opens and sends a low level signal to the controller 4. After receiving the signal, the controller 4 can generate an alarm command to drive the alarm device 7 to start and trigger an alarm.

[0050] Thus, by installing a level sensor 6 inside the oil reservoir 1, when the level sensor 6 in the oil reservoir 1 is too low to meet the lubrication requirements, the level sensor 6 can send a signal to the controller 4, which will then activate the alarm device 7 to prompt the operator to replenish the lubricating grease in the oil reservoir 1 in a timely manner, ensuring normal lubrication of each lubrication point.

[0051] Optionally, the alarm device 7 can be installed in the crane's cab to facilitate the operator's timely detection of insufficient oil level in the oil tank 1 and timely replenishment of lubricating grease to the oil tank 1 to ensure normal lubrication of each lubrication point.

[0052] In one specific embodiment, the alarm device 7 is an indicator light; and / or, the alarm device 7 is a speaker. By setting the alarm device 7 as an indicator light and / or a speaker, it is convenient to remind the operator to replenish the lubricating grease in the oil reservoir 1 in a timely manner.

[0053] Optionally, the controller 4 can be electrically connected to the display screen in the cab. When the oil level in the oil tank 1 is too low, the controller 4 can transmit a signal to the display screen in the cab. For example, a pop-up window can appear on the display screen indicating that the oil tank 1 needs to be refueled, so that the operator can observe it intuitively.

[0054] In one embodiment, for ease of manual operation, the lubrication system also includes a manual switch 8, which is electrically connected to the controller 4.

[0055] In this embodiment, as Figure 2 As shown, by setting a manual switch 8, the operator can control the start and stop of the drive pump 3 through the manual switch 8. This allows the lubrication system to not only automatically and periodically perform lubrication operations, but also to trigger instant lubrication at any time according to actual needs, or to stop the drive pump 3 from working. This enhances the operational flexibility and human intervention capability of the lubrication system. Even when the timer 5 fails, it can still ensure the supply of grease to the lubrication points and improve the reliability of the lubrication system.

[0056] In one embodiment, the distribution oil circuit 2 includes a first distributor 21, which is connected to the oil supply port 102 via the main oil circuit 22. The main oil inlet 201 is located in the main oil circuit 22. The first distributor 21 has two first distribution oil outlets 211. One of the first distribution oil outlets 211 is used to connect to the lubrication points of the suspension cylinder 100 and the axle 200, and the other first distribution oil outlet 211 is used to connect to the lubrication point of the steering rocker arm 300.

[0057] In this embodiment, as Figure 1 As shown, the first distributor 21 is connected to the oil supply port 102 of the oil reservoir 1 through the main oil line 22. The main oil line 22 can be a high-pressure grease hose or a metal pipe. By setting the first distributor 21 and connecting the lubrication points of the suspension cylinder 100 and the axle 200, as well as the lubrication point of the steering rocker arm 300, to different first distribution outlet ports 211, the oil supply to different lubrication points can be zoned, thereby facilitating the layout of each oil line and preventing mutual interference between oil lines.

[0058] In one embodiment, the oil distribution circuit 2 further includes two second distributors 23, each second distributor 23 being connected to each first oil distribution outlet 211 via a first branch oil circuit 24; each second distributor 23 has at least one second oil distribution outlet 231, each second oil distribution outlet 231 being connected to a second branch oil circuit 25, and each second oil circuit 25 being provided with a branch oil outlet 202.

[0059] In this embodiment, as Figure 1 As shown, by setting a second distributor 23 and setting multiple second distribution oil outlets 231 on the second distributor 23, each second distribution oil outlet 231 is connected to a lubrication point through a second branch oil passage 25, which can further realize the zoned oil supply to different lubrication points, thereby facilitating the layout of each oil passage and preventing mutual interference between oil passages.

[0060] Secondly, this application provides a crane, including a suspension cylinder 100, an axle 200 and a steering rocker arm 300; and the aforementioned lubrication system, wherein each oil outlet 202 is connected to a lubrication point of the suspension cylinder 100, a lubrication point of the axle 200 and a lubrication point of the steering rocker arm 300 respectively.

[0061] In this embodiment, as Figure 1 As shown, the crane has the aforementioned lubrication system. By integrating the oil reservoir 1 with the distribution oil circuit 2, the oil reservoir 1 can be connected to the lubrication points of the suspension cylinder 100, the axle 200, and the steering rocker arm 300 via the distribution oil circuit 2. This allows the lubricating grease in the oil reservoir 1 to be directed to each lubrication point. While ensuring effective maintenance of each lubrication point, this setup improves maintenance efficiency compared to traditional manual lubrication, and is less likely to miss any lubrication points. It significantly enhances the comprehensiveness and reliability of maintenance of each lubrication point, strengthens the operational stability and service life of the crane chassis system, and thus enhances the overall operational stability and service life of the crane.

[0062] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and all such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A lubrication system, characterized in that, include: The oil tank (1) has an oil storage cavity (101) for storing lubricating grease, and the oil tank (1) is provided with an oil supply port (102) communicating with the oil storage cavity (101). The distribution oil circuit (2) has a main oil inlet (201) and multiple branch oil outlets (202). The main oil inlet (201) is connected to the oil supply port (102), and each branch oil outlet (202) is used to connect to the lubrication point of the suspension cylinder (100), the lubrication point of the axle (200), and the lubrication point of the steering rocker arm (300).

2. The lubrication system according to claim 1, characterized in that, It also includes a drive pump (3) disposed on the distribution oil passage (2) to drive the lubricating grease to flow in the distribution oil passage (2).

3. The lubrication system according to claim 2, characterized in that, Also includes: A controller (4) is mounted on the drive pump (3) and is electrically connected to the drive pump (3); A timer (5) is set on the controller (4) and electrically connected to the controller (4) to make the drive pump (3) start and stop periodically.

4. The lubrication system according to claim 3, characterized in that, The timer (5) includes a first adjustment device (501) which is capable of adjusting the start-up cycle of the drive pump (3); And / or, the timer (5) includes a second adjustment device (502) capable of adjusting the single start time of the drive pump (3).

5. The lubrication system according to claim 3, characterized in that, Also includes: A liquid level sensor (6) is installed in the oil storage chamber (101), and the liquid level sensor (6) is electrically connected to the controller (4); An alarm device (7) is electrically connected to the controller (4), and the alarm device (7) can be activated when the liquid level sensor (6) detects a preset liquid level.

6. The lubrication system according to claim 5, characterized in that, The alarm device (7) is an indicator light; and / or, the alarm device (7) is a speaker.

7. The lubrication system according to claim 3, characterized in that, It also includes a manual switch (8), which is electrically connected to the controller (4).

8. The lubrication system according to any one of claims 1-7, characterized in that, The oil distribution circuit (2) includes a first distributor (21), which is connected to the oil supply port (102) through the main oil circuit (22). The main oil inlet (201) is located in the main oil circuit (22). The first distributor (21) has two first distribution outlets (211). One of the first distribution outlets (211) is used to connect to the lubrication point of the suspension cylinder (100) and the lubrication point of the axle (200), and the other first distribution outlet (211) is used to connect to the lubrication point of the steering rocker arm (300).

9. The lubrication system according to claim 8, characterized in that, The oil distribution circuit (2) further includes two second distributors (23), each of the second distributors (23) being connected to each of the first distribution outlets (211) via a first branch oil circuit (24); Each of the second distributors (23) has at least one second distribution outlet (231), and each of the second distribution outlets (231) is connected to a second branch oil passage (25), and each of the second branch oil passages (25) is provided with the distribution outlet (202).

10. A crane, characterized in that, include: Suspension cylinder (100), axle (200) and steering rocker arm (300); According to any one of claims 1-9, each of the branch oil ports (202) is connected to the lubrication point of the suspension cylinder (100), the lubrication point of the axle (200), and the lubrication point of the steering rocker arm (300).

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