Bulldozer lubricating and tensioning system and bulldozer

Abstract

The bulldozer lubricating and tensioning system comprises a pump body, an inlet of the pump body is connected with a lubricating oil container, an outlet of the pump body is connected with an inlet of a three-way valve through an oil supply pipe, one outlet of the three-way valve is connected to a distributor through a first header pipe, and the distributor is connected with a plurality of oil filling pipes. The other outlet of the three-way valve is connected with the inlet of the multi-way connector through a second header pipe, the outlet of the multi-way connector is connected with the corresponding tensioning oil cylinder through a pipeline, and by the adoption of the tensioning system, the labor intensity of workers is reduced, and the maintenance work efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bulldozers, in particular to a lubrication and tensioning system for a bulldozer and a bulldozer. Background Art

[0002] The statements herein only provide the background art related to the utility model, and do not necessarily constitute the prior art.

[0003] Bulldozers are developing towards higher operating capabilities, more comfortable operating environments, and faster maintenance methods. Each bulldozer has 7 - 16 lubrication points. As Figure 1 shown, the lubrication points of the bulldozer are usually two at each of the left lifting cylinder 1 and the right lifting cylinder 2, two at the front hood crossbeam 3, and three at the balance beam 6. If the bulldozer is equipped with a ripper, etc., additional lubrication points are required. Before each day's work, manual lubrication with a grease gun is needed at each lubrication point; after the bulldozer works for a period of time, the crawler becomes loose, and the crawler needs to be tensioned by injecting grease into the tensioning cylinder. Each time the crawler is tensioned, the covers of the first tensioning cylinder 4 and the second tensioning cylinder 5 need to be removed. The first tensioning cylinder 4 is used to tension one side of the crawler, and the second tensioning cylinder 5 is used to tension the other side of the crawler. Whether it is lubricating the lubrication points or tensioning the crawler, it takes time to inject grease with a grease gun, resulting in inconvenient daily maintenance.

[0004] CN2459521Y discloses a centralized lubrication device for a bulldozer, including components such as an electric lubrication pump, a connecting pipe, a distributor, and a sub - connecting pipe. This lubrication device realizes automatic and timely supply of lubricating grease to each hinge point, reducing the labor intensity of workers. However, it does not solve the problem of grease injection for the tensioning cylinder. It still requires manual removal of the cover of the tensioning cylinder and then manual injection of grease into the tensioning cylinder for crawler tensioning, with high labor intensity and low work efficiency. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the above - mentioned deficiencies of the prior art, and provide a lubrication and tensioning system for a bulldozer and a bulldozer, which avoids manual injection of grease into the lubrication points and the tensioning cylinder, improves work efficiency, and reduces labor intensity.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] In a first aspect, an embodiment of the present utility model provides a lubrication and tensioning system for a bulldozer, which includes a pump body. The inlet of the pump body is connected to a lubricating oil container, and the outlet of the pump body is connected to the inlet of a three-way valve through an oil supply pipe. One outlet of the three-way valve is connected to a distributor through a first main pipe, and the distributor is connected with a plurality of oil filling pipes. The other outlet of the three-way valve is connected to the inlet of a multi-way interface through a second main pipe, and the outlet of the multi-way interface is connected to a corresponding tensioning cylinder through a pipeline.

[0008] Optionally, the multi-way interface adopts a three-way interface. One outlet of the three-way interface is connected to a first tensioning cylinder through a first oil pipe, and the first tensioning cylinder is used to tension the crawler on one side of the bulldozer. The other outlet of the three-way interface is connected to a second tensioning cylinder through a second oil pipe, and the second tensioning cylinder is used to tension the crawler on the other side of the bulldozer.

[0009] Optionally, the first oil pipe is detachably connected to the oil inlet of the first tensioning cylinder.

[0010] Optionally, the second oil pipe is detachably connected to the oil inlet of the second tensioning cylinder.

[0011] Optionally, the three-way valve adopts an electric three-way ball valve.

[0012] Optionally, the pump body adopts an electronically controlled lubrication pump.

[0013] Optionally, the oil supply pipe, the first main pipe and the second main pipe all adopt flexible hoses.

[0014] In a second aspect, an embodiment of the present utility model provides a bulldozer, which is provided with the automatic lubrication and tensioning system for a bulldozer described in the first aspect.

[0015] Optionally, the lubricating oil container and the pump body are installed on one side of the front hood of the bulldozer.

[0016] Optionally, the multiple oil filling pipes connected to the distributor are respectively connected to the lubrication interfaces of two lifting cylinders, the cross beam of the front hood and the lubrication interfaces at the balance beam.

[0017] The beneficial effects of the above present utility model are as follows:

[0018] 1. The lubrication and tensioning system for a bulldozer of the present utility model is provided with a three-way valve, a first main pipe, a distributor, a second main pipe and a multi-way interface. The multi-way interface is connected to the tensioning cylinder through a pipeline. While the pump body, the first main pipe and the distributor can provide lubricating oil to multiple lubrication interfaces of the bulldozer, by switching the three-way valve to conduct the second main pipe, the pump body can supply oil to the tensioning cylinder, thereby realizing the tensioning of the crawler by the tensioning cylinder. There is no need to manually remove the covering parts of the tensioning cylinder and manually fill oil into the tensioning cylinder, which improves the working efficiency and reduces the labor intensity of the staff.

[0019] 2. For the bulldozer of the present utility model, the pump body and the lubricating oil container are installed on one side of the front hood of the bulldozer, with a large space, which is convenient for replacing and supplementing the lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The schematic drawings forming a part of this application are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation to this application.

[0021] Figure 1 It is a schematic diagram of the distribution of lubrication points of the bulldozer;

[0022] Figure 2 It is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0023] Figure 3 It is the front view of the overall structure of Embodiment 2 of the present utility model;

[0024] Figure 4 It is the top view of the overall structure of Embodiment 2 of the present utility model;

[0025] Among them, 1. Left lifting cylinder, 2. Right lifting cylinder, 3. Front hood cross beam, 4. First tensioning cylinder, 5. Second tensioning cylinder, 6. Balance beam, 7. Lubricating oil container, 8. Electric control lubrication pump, 9. Oil supply pipe, 10. Electric three-way ball valve, 11. First main pipe, 12. Distributor, 13. Refueling pipe, 14. Second main pipe, 15. Three-way joint, 16. Front hood. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Embodiment 1

[0027] This embodiment provides a lubrication and tensioning system for a bulldozer, as Figure 2 shown, including a lubricating oil container 7. The lubricating oil container 7 is used to store lubricating oil. In this embodiment, the lubricating oil is butter. The lubricating oil container 7 is connected to the inlet of the pump body. The pump body can drive the butter in the lubricating oil container to flow out. The pump body adopts an electric control lubrication pump 8, and existing equipment can be used. Its specific structure will not be described in detail here. The electric control lubrication pump 8 is used to be connected to the vehicle controller of the bulldozer and is controlled by the vehicle controller of the bulldozer to work. The electric control lubrication pump 8 is also connected to the 24V power supply carried by the bulldozer itself and is powered on and started by the 24V power supply carried by the bulldozer itself.

[0028] The outlet of the electric control lubrication pump 8 is connected to one end of an oil supply pipe 9, and the other end of the oil supply pipe 9 is connected to the inlet of a three-way valve.

[0029] In this embodiment, the oil supply pipe 9 adopts a hose, such as a rubber hose, etc., and those skilled in the art can set it according to actual needs.

[0030] The three-way valve adopts the existing electric three-way ball valve 10. The electric three-way ball valve 10 has one inlet and two outlets. The electric three-way ball valve 10 can be realized by using existing equipment, and its specific structure will not be described in detail here.

[0031] The electric three-way ball valve 10 is used to connect with the vehicle controller of the bulldozer and is controlled by the vehicle controller of the bulldozer to work.

[0032] The inlet of the electric three-way ball valve 10 is connected to the oil outlet end of the oil supply pipe 9. One of the first outlets of the electric three-way ball valve 10 is connected to one end of the first main pipe 11, and the other end of the first main pipe 11 is connected to the oil inlet of the distributor 12.

[0033] The first main pipe 11 adopts a hose, such as a rubber hose, etc., which can be set by those skilled in the art according to actual needs.

[0034] The distributor 12 can be realized by using existing equipment, and its specific structure will not be described in detail here. The distributor 12 is used to distribute the grease to the designated lubrication points through its own channels.

[0035] The distributor 12 is connected to one end of a plurality of oil filling pipes 13, and the other end of the oil filling pipe 13 is used to connect to the corresponding lubrication points of the bulldozer.

[0036] The second outlet of the electric three-way ball valve 10 is connected to one end of the second main pipe 14, and the other end of the second main pipe 14 is connected to the inlet of the multi-way interface.

[0037] The second main pipe 14 adopts a hose, such as a rubber hose, etc., which can be set by those skilled in the art according to actual needs.

[0038] The outlet of the multi-way interface is connected to the corresponding tensioning cylinder through a pipeline, which can supply oil to the tensioning cylinder and control the work of the tensioning cylinder.

[0039] In this embodiment, the multi-way interface adopts a three-way joint 15. The three-way joint 15 has one inlet and two outlets. The inlet of the three-way joint 15 is connected to the oil outlet end of the second main pipe 14. One of the outlets of the three-way joint 15 is connected to one end of the first oil pipe, and the other end of the first oil pipe is connected to the rodless cavity of the first tensioning cylinder 4, and the first oil pipe is detachably connected to the first tensioning cylinder 4.

[0040] The other outlet of the three-way joint 15 is connected to one end of the second oil pipe, and the other end of the second oil pipe is connected to the rodless cavity of the second tensioning cylinder 5, and the second oil pipe is detachably connected to the second tensioning cylinder 5.

[0041] Among them, the first tensioning cylinder 4 is used to tension the crawler on one side of the bulldozer, and the second tensioning cylinder 5 is used to tension the crawler on the other side of the bulldozer.

[0042] Furthermore, the oil outlet end of the first oil pipe is detachably connected to the joint provided on the cylinder block of the first tensioning cylinder 4 through a flange and bolts, and the oil outlet end of the second oil pipe is detachably connected to the joint provided on the cylinder block of the second tensioning cylinder 5 through a flange and bolts.

[0043] When it is necessary to pour out the lubricating oil in the first tensioning cylinder 4, only the bolts need to be loosened and the first oil pipe can be separated from the joint of the first tensioning cylinder 4. When it is necessary to pour out the lubricating oil in the second tensioning cylinder 5, only the bolts need to be loosened and the second oil pipe can be separated from the joint of the second tensioning cylinder 5.

[0044] In the normal state, the electric three-way ball valve 10 opens the first outlet and closes the second outlet. The electric control lubricating pump 8 is started, and the electric control lubricating pump 8 can drive the grease in the grease container 7 into the distributor 12. The distributor 12 distributes the grease through its own channels and enters multiple oil filling pipes 13. The oil filling pipes 13 transport the grease to the corresponding lubrication points on the bulldozer for lubrication.

[0045] When the crawler needs to be tensioned, the electric three-way ball valve 10 opens the second outlet, and the electric control lubricating pump 8 is started. The electric control lubricating pump 8 can drive the grease in the grease container 7 to enter the rodless cavities of the first tensioning cylinder 4 and the second tensioning cylinder 5 through the three-way joint 15, thereby driving the piston rods of the first tensioning cylinder 4 and the second tensioning cylinder 5 to extend and tension the crawler of the bulldozer.

[0046] The automatic lubrication and tensioning system of this embodiment provides lubricating oil to multiple lubrication points of the bulldozer, eliminating the need for manual lubrication of the lubrication points. At the same time, it can also supply oil to the tensioning cylinders through the electric control lubricating pump, thereby realizing the tensioning of the crawler by the tensioning cylinders, eliminating the need for manual oil filling of the tensioning cylinders after removing the covering parts of the tensioning cylinders, improving the maintenance work efficiency, and reducing the labor intensity of the staff.

[0047] Embodiment 2

[0048] This embodiment provides a bulldozer, as Figures 3 - 4As shown, the automatic lubrication and tensioning system for a bulldozer described in Embodiment 1 is provided. Among them, the lubricating oil container 7 and the electric control lubricating pump 8 are fixed on one side of the front hood 16 of the bulldozer. The space at this position is large, which is convenient for replacing and filling the grease in the lubricating oil container 7. The distributor 12 is fixed on the top surface at the middle position of the front hood 16 of the bulldozer. The tee 15 and the electric control three-way ball valve 10 are both fixed on one side of the front hood 16 of the bulldozer and are arranged close to the electric control lubricating pump 8, or the electric control three-way ball valve 10 is fixed on the housing of the electric control lubricating pump 8, and the tee is fixed on the front hood 16 of the bulldozer. The front hood 16 of the bulldozer can adopt the existing structure, and no detailed description will be given here. The setting methods of the first tensioning cylinder 4 and the second tensioning cylinder 5 on the bulldozer can adopt the existing technology, and no detailed description will be given here.

[0049] Two of the fuel pipes of the distributor 12 are respectively connected to the lubrication interfaces at two lubrication points of the left lifting cylinder 1 of the bulldozer, and the other two fuel pipes are connected to the lubrication interfaces at two lubrication points of the right lifting cylinder 2 of the bulldozer. The other two fuel pipes are respectively connected to the lubrication interfaces at two lubrication points of the front hood crossbeam 3, and the other three fuel pipes are respectively connected to the lubrication interfaces at three lubrication points of the balance beam 6.

[0050] The setting methods of the lubrication points of the left lifting cylinder 1, the right lifting cylinder 2, the lubrication points of the front hood crossbeam 3, and the lubrication points of the balance beam 6 can adopt the existing technology, and the connection method between the fuel pipe and the lubrication interface at the lubrication point can also adopt the existing technology, and no detailed description will be given here.

[0051] In this embodiment, only the automatic lubrication and tensioning system for a bulldozer described in Embodiment 1 is installed on the bulldozer, and the remaining structures of the bulldozer can adopt the existing technology, and no detailed description will be given here.

[0052] Although the specific implementation manners of the present invention are described above in conjunction with the accompanying drawings, it is not a limitation to the protection scope of the present invention. Those skilled in the art should understand that based on the technical solutions of the present invention, various modifications or deformations that can be made by those skilled in the art without creative labor are still within the protection scope of the present invention.

Claims

1. A bulldozer lubrication and tensioning system, characterized in that: It includes a pump body, the inlet of the pump body is connected to the lubricating oil container, the outlet of the pump body is connected to the inlet of a three-way valve through an oil supply pipe, one outlet of the three-way valve is connected to a distributor through a first main pipe, the distributor is connected to a plurality of refueling pipes, the other outlet of the three-way valve is connected to the inlet of a multi-way interface through a second main pipe, and the outlet of the multi-way interface is connected to the corresponding tensioning cylinder through a pipeline.

2. A bulldozer lubrication and tensioning system as claimed in claim 1, characterized in that: The multi-way interface adopts a three-way interface, one outlet of the three-way interface is connected to the first tensioning cylinder through a first oil pipe, the first tensioning cylinder is used to tension the track on one side of the bulldozer, and the other outlet of the three-way interface is connected to the second tensioning cylinder through a second oil pipe, the second tensioning cylinder is used to tension the track on the other side of the bulldozer.

3. A bulldozer lubrication and tensioning system as claimed in claim 2, characterized in that: The first oil pipe is detachably connected to the oil inlet of the first tensioning oil cylinder.

4. A bulldozer lubrication and tensioning system as claimed in claim 2, characterized in that: The second oil pipe is detachably connected to the oil inlet of the second tensioning oil cylinder.

5. A bulldozer lubrication and tensioning system as claimed in claim 1, characterized in that: The three-way valve is an electric three-way ball valve.

6. A bulldozer lubrication and tensioning system as claimed in claim 1, characterized in that: The pump body adopts an electronically controlled lubrication pump.

7. A bulldozer lubrication and tensioning system as claimed in claim 1, characterized in that: The oil supply pipe, the first manifold and the second manifold are all flexible hoses.

8. A bulldozer, characterized in that: An automatic lubrication and tensioning system for a bulldozer as claimed in any one of claims 1 to 7 is provided.

9. A bulldozer according to claim 8, characterized in that: The lubricating oil container and the pump body are installed on one side of the front hood of the bulldozer.

10. The bulldozer according to claim 8, characterized in that: The multiple refueling pipes connected to the distributor are respectively connected to the lubrication interfaces of the two lifting cylinders, the front hood cross beam and the lubrication interfaces at the balance beam.

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