Hydraulic pump structure of main pump bin of excavator and excavator

Abstract

The utility model relates to an excavator main pump bin hydraulic pump structure and an excavator, and belongs to the technical field of excavator hydraulic pump accessory machining. The excavator main pump bin hydraulic pump structure comprises an engine and a transfer case which is connected with an output port of the engine and provided with four driving ports, and a main hydraulic pump connected with the driving ports is arranged on the transfer case; under the condition of a single output port of the engine, the transfer case is used, the multiple hydraulic pumps are installed in a combined mode, the installation layout is that the main hydraulic pump and the auxiliary hydraulic pump are connected in series, the limited use space is fully utilized, meanwhile, through setting of the positions and the directions of all oil pumping ports, the oil pumping efficiency is improved, and the oil pumping efficiency is improved. And the problems of pipeline arrangement incapability and interference are avoided. And efficient operation and maintenance convenience of the hydraulic system are ensured. And therefore, a more complicated hydraulic function is realized in a limited space, and various engineering requirements are met.

Description

TECHNICAL FIELD

[0001] The present disclosure belongs to the technical field of excavator hydraulic pump accessory machining, and particularly relates to an excavator main pump chamber hydraulic pump structure and excavator. BACKGROUND

[0002] The statements herein merely provide background technology related to the present disclosure, and do not necessarily constitute prior art.

[0003] At present, mine excavators gradually develop towards large-tonnage models to meet the needs of mine mining. With the increase of tonnage, the specifications of hydraulic cylinders and other execution elements are getting larger and larger. In order to ensure the speed and power of the execution element, more hydraulic oil flow is needed to meet the needs of the execution element. Due to the limitation of the maximum displacement of the hydraulic pump in the industry at present, in order to increase the flow, only the number of hydraulic pumps can be increased. However, there are various hydraulic pumps with different functions on the mine excavator at present. With the increase of the number of hydraulic pumps, the complexity of the whole system also increases, which makes the layout and installation of hydraulic pumps more difficult, and often requires the development of a special engine when actually arranging.

[0004] The existing patent application No. CN221663771U mentions a kind of excavator main pump chamber hydraulic pump arrangement structure, although it is mentioned that the installation mode of connecting multiple pump bodies together by connecting large pump and small pump in series can avoid the problem of developing special engine, but such design cannot make hydraulic pump always maintain optimal hydraulic performance when the size of transfer case does not change and other functional pumps need to be increased, and the arrangement of pipeline will be interfered. CONTENT OF THE UTILITY MODEL

[0005] The purpose of the present disclosure is to provide an excavator main pump chamber hydraulic pump structure and excavator, which can at least solve one of the above technical problems.

[0006] To achieve the above purpose, one or more embodiments of the present disclosure provide an excavator main pump chamber hydraulic pump structure, comprising an engine and a transfer case with four driving ports connected with the engine output port, a main hydraulic pump connected with the driving port is arranged on the transfer case, and a secondary hydraulic pump is arranged in series with the main hydraulic pump.

[0007] Further, the main hydraulic pump and the secondary hydraulic pump are connected in series on the same central axis.

[0008] Further, the connection between the main hydraulic pump and the secondary hydraulic pump and the connection between the main hydraulic pump and the driving port are both provided with sealing pads.

[0009] Further, the main hydraulic pump and the secondary hydraulic pump and the main hydraulic pump and the driving port are connected by bolts.

[0010] Further, the oil inlet and the oil outlet of the main hydraulic pump and the auxiliary hydraulic pump are arranged at one end towards the outside.

[0011] Further, the main hydraulic pump comprises a closed rotary pump, a first main pump, a second main pump and a third main pump, and the auxiliary hydraulic pump comprises a three-gear pump, a hydraulic oil heat dissipation pump and a water heat dissipation pump.

[0012] Further, the closed rotary pump and the third main pump are arranged above the first main pump and the second main pump, and the closed rotary pump and the first main pump are arranged at the left side of the third main pump and the second main pump.

[0013] Further, the three-gear pump is arranged on the front end surface of the closed rotary pump, the hydraulic oil heat dissipation pump is arranged on the front end surface of the first main pump, and the water heat dissipation pump is arranged on the front end surface of the second main pump.

[0014] Further, the three-gear pump comprises, from inside to outside, a closed oil supplement pump, a pilot pump and a transfer case heat dissipation pump, the closed oil supplement pump is connected with the closed rotary pump, and the closed oil supplement pump, the pilot pump and the transfer case heat dissipation pump are connected together through a through shaft, and the closed rotary pump provides input torque.

[0015] Another aspect of the embodiment of the present disclosure provides a hydraulic pump structure of a main pump house of an excavator.

[0016] The above one or more technical solutions have the following beneficial effects:

[0017] In the case of a single output port of an engine, the present disclosure combines and installs multiple hydraulic pumps by using a transfer case, installs the multiple hydraulic pumps in the form of series connection of a main hydraulic pump and an auxiliary hydraulic pump, fully utilizes limited use space, avoids problems of impossible pipeline arrangement and interference through position and direction setting of pump oil ports, ensures high-efficiency operation of the hydraulic system with optimal hydraulic performance, and realizes more complex hydraulic functions in limited space, thereby meeting various engineering requirements. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the specification of the present application, serve to explain the present application, and do not constitute limitations to the present application.

[0019] Figure 1 FIG. 1 is a perspective view of the overall structure in one or more embodiments of the present disclosure;

[0020] Figure 2 FIG. 2 is a left perspective view of a three-gear pump in one or more embodiments of the present disclosure;

[0021] Figure 3This is a right-side perspective view of a triple gear pump in one or more embodiments of this disclosure;

[0022] In the diagram, 1 is a closed-loop rotary pump; 2 is the first main pump; 3 is the second main pump; 4 is the third main pump; 5 is a triple gear pump; 6 is a hydraulic oil cooling pump; 7 is a water-cooled cooling pump; 8 is a closed-loop replenishing pump; 9 is a pilot pump; and 10 is a transfer case cooling pump. Detailed Implementation

[0023] like Figure 1 As shown, this embodiment provides a hydraulic pump structure for the main pump compartment of an excavator and an excavator, including an engine and a transfer case with four drive ports connected to the engine output port. The transfer case is equipped with a main hydraulic pump connected to the drive ports and an auxiliary hydraulic pump connected in series with the main hydraulic pump.

[0024] Specifically, the main hydraulic pump and the auxiliary hydraulic pump are connected in series on the same central axis. The auxiliary hydraulic pump is installed on the PTO (Power Take Off) of the main hydraulic pump. The main hydraulic pump provides power to the auxiliary hydraulic pump. All connections are equipped with gaskets, and the main hydraulic pump and the auxiliary hydraulic pump, as well as the main hydraulic pump and the drive port, are connected and fixed by bolts. The gaskets at the connections are limited. The gaskets effectively prevent hydraulic oil from leaking from these connections, thus ensuring that the hydraulic oil does not cause pressure loss due to leakage when flowing inside the system, and also avoiding pollution of the surrounding environment by the hydraulic oil.

[0025] like Figure 1 As shown, the inlet and outlet ports of both the main and auxiliary hydraulic pumps are located at the outward-facing end. By setting the position and direction of each pump's port, it is ensured that the position and direction of each pump's port are perfectly aligned, avoiding potential layout problems and interference during pipeline arrangement. This also effectively reduces pipeline crossings and collisions, making the maintenance and repair of the entire hydraulic system more convenient. Furthermore, this design greatly improves the system's flexibility, allowing for more flexible adjustments and optimizations to meet different working conditions and environments.

[0026] The main hydraulic pump includes a closed rotary pump 1, a first main pump 2, a second main pump 3, and a third main pump 4. The auxiliary hydraulic pump includes a triple gear pump 5, a hydraulic oil cooling pump 6, and a water cooling pump 7.

[0027] Specifically, such as Figure 1As shown, the closed rotary pump 1 and the third main pump 4 are arranged above the first main pump 2 and the second main pump 3, the closed rotary pump 1 and the first main pump 2 are located on the left side of the third main pump 4 and the second main pump 3, the three-gear pump 5 is arranged on the front end surface of the closed rotary pump 1, the hydraulic oil heat pump 6 is arranged on the front end surface of the first main pump 2, and the water heat pump 7 is arranged on the front end surface of the second main pump 3.

[0028] By connecting the main hydraulic pump and the auxiliary hydraulic pump in the connection mode of large pump and small pump, the installation and arrangement of the main hydraulic pump and the auxiliary hydraulic pump are realized by using limited space.

[0029] Specifically, the main hydraulic pump provides power input for the auxiliary hydraulic pump through the PTO output port arranged on the pump body, so that efficient collaborative work between the two pumps is ensured, thereby realizing maximum functionality and efficiency in limited space.

[0030] As shown in the figure, Figure 2 The three-gear pump 5 is sequentially arranged as a closed oil supplement pump 8, a pilot pump 9 and a transfer case heat pump 10 from inside to outside, the oil outlet and the oil inlet of the closed oil supplement pump 8 are symmetrically arranged on the two sides of the outer surface of the pump body, the oil outlet of the transfer case heat pump 10 is arranged on the same side as the oil outlet of the closed oil supplement pump 8, the pilot pump 9 is arranged on the outer surface of the transfer case heat pump 10 and located between the oil outlet of the transfer case heat pump 10 and the oil outlet of the closed oil supplement pump 8, and the closed oil supplement pump 8 is connected with the closed rotary pump 1; the closed oil supplement pump 8, the pilot pump 9 and the transfer case heat pump 10 are connected together through a through shaft inside, and input torque is provided by the closed rotary pump 1,

[0031] Specifically, as shown in the figure, Figure 3 The transfer case heat pump 10 is an independent pump inside, includes an oil inlet and an oil outlet, and heats the gear oil in the transfer case; the pilot pump 9 and the closed oil supplement pump 8 share an oil inlet, which saves the pipeline arrangement space, and the two pumps include independent oil outlets, so that different pressure outputs are realized and the needs of the hydraulic system are met. The pilot pump 9 provides pilot control pressure for the whole machine, and the closed oil supplement pump 8 supplements oil for the closed system to prevent the closed system from being damaged due to lack of oil.

[0032] The embodiment also provides a hydraulic pump structure of a main pump compartment of an excavator.

[0033] The working principle of the utility model is as follows:

[0034] In the case of a single output engine, by using the transfer box 8, multiple hydraulic pumps are combined and installed, the installation layout is installed in the form of series connection of the main hydraulic pump and the auxiliary hydraulic pump, the limited use space is fully utilized, and through the position and direction setting of each pump oil port, the pipeline cannot be arranged and the interference problem is avoided. Ensure the efficient operation of the hydraulic system and the convenience of maintenance. Further, more complex hydraulic functions are realized in a limited space, thereby meeting various engineering requirements.

[0035] Although the specific embodiments of the present disclosure are described above with reference to the drawings, they are not a limitation on the scope of protection of the present disclosure, and those skilled in the art should understand that various modifications or changes made on the basis of the technical solutions of the present disclosure without creative labor are still within the scope of protection of the present disclosure.

Claims

1. A structure of a hydraulic pump of a main pump tank of a shovel, characterized by comprising: The engine and the transfer case with four drive outlets connected with the engine outlet are provided with the main hydraulic pump connected with the drive outlet and the auxiliary hydraulic pump connected in series with the main hydraulic pump.

2. The excavator main pump cartridge hydraulic pump structure of claim 1, wherein, The main hydraulic pump and the auxiliary hydraulic pump are connected in series on the same central axis.

3. The excavator main pump cartridge hydraulic pump structure of claim 1, wherein, The connection between the main hydraulic pump and the auxiliary hydraulic pump and the connection between the main hydraulic pump and the drive outlet are provided with sealing pads.

4. The excavator main pump cartridge hydraulic pump structure of claim 1, wherein, The main hydraulic pump and the auxiliary hydraulic pump and the main hydraulic pump and the drive outlet are connected by bolts.

5. The excavator main pump cartridge hydraulic pump structure of claim 1, wherein, The oil inlet and outlet of the main hydraulic pump and the auxiliary hydraulic pump are provided at the end towards the outside.

6. The excavator main pump cartridge hydraulic pump structure of claim 1, wherein, The main hydraulic pump includes a closed rotary pump, a first main pump, a second main pump and a third main pump, and the auxiliary hydraulic pump includes a three-union gear pump, a hydraulic oil heat pump and a water heat pump.

7. The excavator main pump cartridge hydraulic pump structure of claim 6, wherein, The closed rotary pump and the third main pump are arranged above the first main pump and the second main pump, and the closed rotary pump and the first main pump are located on the left side of the third main pump and the second main pump.

8. The excavator main pump cartridge hydraulic pump structure of claim 6, wherein, The three-union gear pump is arranged on the front end face of the closed rotary pump, the hydraulic oil heat pump is arranged on the front end face of the first main pump, and the water heat pump is arranged on the front end face of the second main pump.

9. The excavator main pump cartridge hydraulic pump structure of claim 6, wherein, The three-union gear pump is sequentially arranged from inside to outside as a closed oil supplement pump, a pilot pump and a transfer case heat pump, the closed oil supplement pump is connected with the closed rotary pump, and the closed oil supplement pump, the pilot pump and the transfer case heat pump are connected together through a through shaft inside, and the closed rotary pump provides input torque.

10. An excavator characterized by comprising: The hydraulic pump structure of the excavator main pump house includes the hydraulic pump structure of the excavator main pump house according to any one of claims 1-9.

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