Excavator capable of supplying oil in multiple ways

Abstract

The utility model discloses a multi-path oil supply excavator, and belongs to the technical field of technical excavators. Which comprises a frame (2) and a base (5) and is characterized in that the frame (2) and the base (5) are rotationally connected through a rotary oil supply mechanism (6), an upper rotary disc (7) of the rotary oil supply mechanism (6) is fixed to the frame (2), a lower rotary disc (10) of the rotary oil supply mechanism (6) is fixed to the base (5), a plurality of oil inlets (9) and oil outlets (14) are formed in the upper rotary disc (7) and the lower rotary disc (10) respectively, and the oil inlets (9) and the oil outlets (14) are in one-to-one correspondence and are communicated respectively; the oil inlets (9) are respectively connected with an oil supply device through pipelines, and the oil outlets (14) are respectively connected with a hydraulic device arranged at the tail part of the base (5) through pipelines. According to the multi-path oil supply excavator, the rotary oil supply mechanism is arranged, on the premise that the requirement for rotary connection of the cab and the chassis of the excavator is met, power is provided for various road surface repairing devices, and the working efficiency is improved.

Description

Technical Field

[0001] An excavator with multi-way oil supply belongs to the technical field of excavators. Background Art

[0002] Pits, collapses, and cracks are common diseases in asphalt pavement damage. If pits, collapses, and cracks are not repaired in time, rainwater will pour into the pavement structure layer, which will evolve into more serious and large-area diseases such as spalling, loosening, and potholes, thus greatly reducing the service life of the road. In the prior art, methods for pavement repair include non-grooving repair methods and grooving repair methods. Among them, although the non-grooving repair method is relatively convenient to operate, the repair effect is poor. Compared with the traditional repair method, grooving repair can make the repair material fully contact the interface of existing pits, collapses, and cracks, and the repair effect is better.

[0003] Traditional grooving repair is generally completed manually, but there may be problems such as non-standard operation, resulting in unqualified repair quality. With the continuous development of technology, some technical solutions that can automatically repair the road surface have also emerged on the market. However, a vehicle needs to be set up, and various machines for processing the road surface, such as milling machines and crushers, need to be set on the vehicle. At the same time, a power system (hydraulic system) for driving the above machines to act needs to be set up. Therefore, in specific implementation, its structure is relatively complex and the cost is relatively high.

[0004] With the further development of technology, in the prior art, by using the ready-made working vehicle itself, such as an excavator, and taking advantage of the unified disassembly interface of the excavator tool head (such as a bucket), the road surface working device (such as the above-mentioned milling machine, crusher, etc.) is integrated into the tail of the excavator chassis, and the hydraulic system equipped in the excavator itself is used as the power source to drive the road surface working device to work and achieve road surface repair. However, during the entire road surface repair process, multiple road surface working devices are required to cooperate to complete the work. The hydraulic system of the excavator is generally located in the chassis box behind the cab, and the traditional excavator is not equipped with enough oil circuits to drive different road surface repair devices to work. Therefore, only during different repair processes, the oil circuit in the excavator chassis is connected to different road surface repair devices, so its working efficiency is relatively low.

[0005] Therefore, designing a technical solution that can provide power for multiple road surface repair devices and can meet the rotational connection between the excavator cab and the chassis has become an urgent problem to be solved in this field. Summary of the Utility Model

[0006] The technical problem to be solved by the present utility model is: to overcome the deficiencies of the prior art and provide a multi-way oil supply excavator that realizes power supply for multiple road surface repair devices by setting a rotational oil supply mechanism on the premise of meeting the rotational connection between the excavator cab and the chassis.

[0007] The technical solution adopted by the utility model to solve its technical problems is as follows: The excavator with multiple oil supplies includes a frame and a base that are rotatably connected. A machine box is arranged on the surface of the frame, and an oil supply device is arranged in the machine box. Its characteristics are that the frame and the base are rotatably connected through a rotating oil supply mechanism. The rotating oil supply mechanism includes an upper turntable and a lower turntable that rotate relative to each other. The upper turntable is fixed to the frame, and the lower turntable is fixed to the base. A number of oil inlets and oil outlets are respectively arranged on the upper turntable and the lower turntable. The oil inlets and oil outlets correspond one by one and are respectively connected. The oil inlets are respectively connected to the oil supply device through pipelines, and the oil outlets are respectively connected to a hydraulic device installed at the tail of the base through pipelines.

[0008] Preferably, the upper turntable is sleeved outside the lower turntable.

[0009] Preferably, an oil inlet seat is arranged on the side of the upper turntable, and the oil inlets are arranged on the end face of the oil inlet seat.

[0010] Preferably, an upper turntable oil passage is opened in the upper turntable, and the upper turntable oil passage communicates with the oil inlets and the inner cavity of the upper turntable.

[0011] Preferably, the lower turntable includes a fixed disk fixed to the base and an inner column, and the upper turntable is hermetically sleeved outside the inner column.

[0012] Preferably, a number of annular oil passages are opened on the surface of the inner column. The upper turntable oil passage communicates with the corresponding annular oil passages. A lower turntable oil passage is also arranged in the lower turntable, and the lower turntable oil passage connects the annular oil passages and the corresponding oil outlets.

[0013] Preferably, a valve group is arranged in the machine box. A number of solenoid valves are arranged in the valve group, and the solenoid valves are respectively installed on the connecting pipelines between the oil inlets and the oil supply device.

[0014] Preferably, sealing rings are respectively arranged between any two annular oil passages and axially outside the annular oil passages at both ends.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] In this excavator with multiple oil supplies, by setting a rotating oil supply mechanism, on the premise of satisfying the rotational connection between the excavator cab and the chassis, power is provided for a variety of road repair devices, improving work efficiency.

[0017] Sealing rings are respectively arranged between any two annular oil passages and axially outside the annular oil passages at both ends, and the sealing of each annular oil passage is achieved through the sealing rings. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of an excavator with multiple oil supplies.

[0019] Figure 2 Front view of the rotating oil supply mechanism.

[0020] Figure 3 It is Figure 2 The sectional view taken along the A-A direction in

[0021] Wherein: 1. Cab 2. Frame 3. Chassis 4. Connecting frame 5. Base 6. Rotating oil supply mechanism 7. Upper turntable 8. Oil inlet seat 9. Oil inlet 10. Lower turntable 11. Annular oil circuit 12. Lower turntable oil circuit 13. Upper turntable oil circuit 14. Oil outlet 15. Inner column 16. Fixed disk. Specific implementation mode

[0022] Figures 1 - 3 is the best embodiment of the present invention. The following will further explain the present invention in conjunction with the attached Figures 1 - 3 drawings.

[0023] As Figure 1 shown, an excavator with multi-way oil supply adopts a common crawler excavator or wheeled excavator in the art. The same as the prior art, the excavator includes a base 5, wheels (or crawlers) are arranged on both sides of the base 5, a frame 2 is arranged on the upper surface of the base 5, a chassis 3 is arranged at the tail of the upper surface of the frame 2, and a power system of the excavator, such as an engine, an oil supply device, etc. are arranged in the chassis 3. A cab 1 is arranged on one side of the upper surface of the frame 2.

[0024] A connecting frame 4 is arranged at the rear end of the base 5, and a road surface repair device such as a milling machine and a crusher is connected through the connecting frame 4 (not shown in the figure). The frame 2 is rotatably connected to the base 5 through a rotating oil supply mechanism 6, a valve group is arranged in the chassis 3, the valve group includes a plurality of solenoid valves, and the on-off state of each solenoid valve is controlled by the control system of the excavator. The solenoid valves in the valve group are installed one by one in each pipeline connecting the rotating oil supply mechanism 6 and the oil supply device in the chassis 3. When a certain road surface repair device needs to work, the corresponding solenoid valve is controlled to be connected through a button arranged in the cab 1, and other solenoid valves are closed. At this time, the hydraulic oil output by the oil supply device is output from the oil outlet 14 of the rotating oil supply mechanism 6 (see Figure 3 ) and sent to the corresponding road surface repair device to drive its action.

[0025] As Figures 2 - 3 shown, the rotating oil supply mechanism 6 includes an upper turntable 7 and a lower turntable 10 which are coaxially installed. The upper turntable 7 and the lower turntable 10 rotate relative to each other. The frame 2 is fixed on the upper surface of the upper turntable 7, and the lower turntable 10 is fixed on the upper surface of the base 5. When the frame 2 and the base 5 rotate relative to each other, the upper turntable 7 and the lower turntable 10 rotate relative to each other at the same time.

[0026] The upper turntable 7 is provided with an inner cavity opening downward, and the cross-section of the inner cavity of the upper turntable 7 is circular. The lower turntable 10 includes a fixed disk 16 and an inner column 15 coaxially fixed on the upper surface of the fixed disk 16. The lower turntable 10 is fixed to the base 5 through the fixed disk 16. The inner column 15 is loaded into the inner cavity of the upper turntable 7 from bottom to top, and the outer wall of the inner column 15 is in close fit with the inner wall of the inner cavity of the upper turntable 7.

[0027] On the outer wall of the upper turntable 7, an oil inlet seat 8 is radially arranged. On the surface of the oil inlet seat 8, a number of oil inlets 9 are provided. Inside the oil inlet seat 8, a plurality of upper turntable oil channels 13 corresponding to the oil inlets 9 one by one are opened along the radial direction of the upper turntable 7, and the inner ports of the upper turntable oil channels 13 extend to the inner wall of the upper turntable 7.

[0028] On the side wall of the inner column 15, a number of annular oil channels 11 are opened, and all the annular oil channels 11 are arranged at intervals along the axial direction of the inner column 15. The annular oil channels 11 correspond to the upper turntable oil channels 13 one by one, and the upper turntable oil channels 13 are docked with the corresponding annular oil channels 11 at the inner wall of the upper turntable 7. At the joint surface between the inner wall of the upper turntable 7 and the outer wall of the inner column 15, a number of sealing rings (not shown in the figure) are provided. The sealing rings are arranged between any two annular oil channels 11, above the uppermost annular oil channel 11, and below the lowermost annular oil channel 11. Each annular oil channel 11 is sealed through the sealing ring.

[0029] The oil outlet 14 is opened on the bottom surface of the fixed disk 16. Inside the fixed disk 16 and the inner column 15, a plurality of lower turntable oil channels 12 corresponding to the annular oil channels 11 one by one are opened. One end of the lower turntable oil channel 12 is connected to the corresponding annular oil channel 11, and the other end of the lower turntable oil channel 12 is connected to the corresponding oil outlet 14.

[0030] The specific working process and working principle are as follows:

[0031] After the output of the oil supply device in the chassis 3, it is connected to one end of the corresponding solenoid valve in the valve group through a pipeline. The other end of each solenoid valve is connected to the corresponding oil inlet 9 on the surface of the oil inlet seat 8 through a pipeline. And in the base 5, the road repair device is connected to the corresponding oil outlet 14 through a pipeline.

[0032] When it is necessary to perform road repair operations, the driver presses the corresponding button in the cab 1, and through the excavator controller, the corresponding solenoid valve is controlled to be connected, and the other solenoid valves are closed. The hydraulic pressure in the oil supply device is connected to the corresponding oil inlet 9 of the oil inlet seat 8 through the solenoid valve and the pipeline, and then the hydraulic oil is sent into the corresponding annular oil channel 11 through the upper turntable oil channel 13 opened in the oil inlet seat 8 and the upper turntable 7. The hydraulic oil is further sent into the corresponding lower turntable oil channel 12 through the annular oil channel 11 and is output from the corresponding oil outlet 14, and finally sent into the corresponding road repair device to drive the road repair device to act.

[0033] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An excavator with multiple-way oil supply, comprising a frame (2) and a base (5) which are rotatably connected. A chassis (3) is arranged on the surface of the frame (2), and an oil supply device is arranged in the chassis (3). It is characterized in that: The frame (2) and the base (5) are rotatably connected through a rotary oil supply mechanism (6). The rotary oil supply mechanism (6) includes an upper turntable (7) and a lower turntable (10) that rotate relative to each other. The upper turntable (7) is fixed to the frame (2), and the lower turntable (10) is fixed to the base (5). A number of oil inlets (9) and oil outlets (14) are respectively provided on the upper turntable (7) and the lower turntable (10). The oil inlets (9) and the oil outlets (14) correspond to each other one by one and are respectively connected. The oil inlets (9) are respectively connected to an oil supply device through pipelines, and the oil outlets (14) are respectively connected to a hydraulic device installed at the tail of the base (5) through pipelines.

2. The multi-way fuel supply excavator according to claim 1, characterized in that: The upper turntable (7) is sleeved outside the lower turntable (10).

3. The multi-way fuel supply excavator according to claim 1 or 2, characterized in that: An oil inlet seat (8) is provided on the side of the upper turntable (7), and the oil inlets (9) are provided on the end face of the oil inlet seat (8).

4. The multi-way fuel supply excavator according to claim 3, characterized in that: An upper turntable oil passage (13) is formed in the upper turntable (7), and the upper turntable oil passage (13) communicates with the oil inlets (9) and the inner cavity of the upper turntable (7).

5. The multi-way fuel supply excavator according to claim 4, characterized in that: The lower turntable (10) includes a fixed disk (16) fixed to the base (5) and an inner column (15), and the upper turntable (7) is sealingly sleeved outside the inner column (15).

6. The multi-way fuel supply excavator according to claim 5, characterized in that: A number of annular oil passages (11) are formed on the surface of the inner column (15). The upper turntable oil passage (13) communicates with the corresponding annular oil passages (11). A lower turntable oil passage (12) is further provided in the lower turntable (10), and the lower turntable oil passage (12) connects the annular oil passages (11) and the corresponding oil outlets (14).

7. The multi-way fuel supply excavator according to claim 1, characterized in that: A valve group is provided in the chassis (3). A number of solenoid valves are provided in the valve group, and the solenoid valves are respectively installed on the connecting pipelines between the oil inlets (9) and the oil supply device.

8. The excavator with multiple oil supplies according to claim 6, characterized in that: Sealing rings (27) are respectively provided between any two annular oil passages (11) and axially outside the annular oil passages (11) at both ends.

Images