Excavator excavating mode and sliding transshipment mode switching system and excavator

Abstract

The utility model provides a system for switching an excavating mode and a sliding transfer mode of an excavator and the excavator. The system comprises a walking control valve, a left pilot handle control valve, a right pilot handle control valve and a first electromagnetic valve, the input ends of the walking control valve, the left pilot handle control valve and the right pilot handle control valve are all connected with an oil source valve outlet of the excavator, the output end of the walking control valve is connected with a walking control unit of a multi-way valve of the excavator, and the output end of the left pilot handle control valve and the output end of the right pilot handle control valve are both connected with the multi-way valve. The first electromagnetic valve is located between the left pilot handle control valve and the multi-way valve, the left pilot handle control valve and the rotation control unit and the bucket rod control unit of the multi-way valve are connected in the first working state, and the left pilot handle control valve and the walking control unit are connected in the second working state. The switching system can realize switching between an excavating mode and a sliding transshipment mode, and the working efficiency of the excavator is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical equipment technical field especially, relates to a kind of excavator's excavation mode and sliding transfer mode switching system and excavator. BACKGROUND

[0002] Excavator is a kind of earth-moving machinery with shovel to excavate material higher or lower than the surface of the machine, and load into transport vehicle or unload to stockpile;Excavator is composed of power device, working device, rotating mechanism, control mechanism, transmission mechanism, walking mechanism and other structures, and is used for excavating soil, coal, silt and other materials.Sliding transfer machine is also called sliding transfer machine, multifunctional engineering vehicle and multifunctional engineering machine, which is a wheel type special chassis equipment that realizes vehicle steering by using the speed difference of two side wheels, adopts wheel type walking mechanism, full-wheel drive, sliding steering, and can randomly and quickly replace or connect various working devices in working site to adapt to different working environment and operation content.

[0003] At present, the existing excavator drives by the driver's two feet to control the walking control valve of excavator when driving, and the sliding transfer machine relies on handle to control during sliding transfer process, and for the occasion that needs to excavate and slide transfer simultaneously, since excavation mode and sliding transfer mode need to be realized by different equipment, and the control mode of excavator and sliding transfer machine is quite different, so excavating work and sliding transfer work cannot be completed by the same equipment, which makes the work efficiency low.Therefore, how to complete excavating work and sliding transfer work by the same excavator to improve the work efficiency of excavator is a technical problem to be solved. UTILITY MODEL CONTENT

[0004] Therefore, the utility model provides a kind of excavator's excavation mode and sliding transfer mode switching system and excavator to solve one or more technical problems existing in prior art.

[0005] According to an aspect of the utility model, a kind of excavator's excavation mode and sliding transfer mode switching system are disclosed, the switching system includes walking control valve, left pilot handle control valve, right pilot handle control valve, first electromagnetic valve;

[0006] The input end of the travel control valve, the input end of the left pilot handle control valve and the input end of the right pilot handle control valve are all connected to the oil source valve outlet of the excavator, the output end of the travel control valve is used to be connected to the travel control unit of the multi-way valve of the excavator, the output end of the left pilot handle control valve and the output end of the right pilot handle control valve are both used to be connected to the multi-way valve, the first solenoid valve is located between the left pilot handle control valve and the multi-way valve, the first solenoid valve connects the left pilot handle control valve and the rotation control unit and the dipper arm control unit of the multi-way valve in the first working state, and the first solenoid valve connects the left pilot handle control valve and the travel control unit of the multi-way valve in the second working state.

[0007] In some embodiments of the present invention, the right pilot handle control valve includes a bucket control valve and an arm control valve, the output end of the bucket control valve is used to connect to the bucket control unit of the multi-way valve, and the output end of the arm control valve is used to connect to the boom control unit or the adjusting arm control unit of the multi-way valve.

[0008] In some embodiments of the present invention, the system also includes a second solenoid valve, which is located between the arm control valve and the multi-way valve. The second solenoid valve connects the arm control valve and the arm control unit of the multi-way valve in the first working state, and connects the arm control valve and the regulating arm control unit of the multi-way valve in the second working state.

[0009] In some embodiments of the present invention, both the first solenoid valve and the second solenoid valve are two-position four-way solenoid valves.

[0010] In some embodiments of the present invention, the first working state is a power-off state, and the second working state is a power-on state.

[0011] In some embodiments of the present invention, the system includes a first shuttle valve, which is located between the output end of the travel control valve and the travel control unit, and the first solenoid valve is located between the left pilot handle control valve and the first shuttle valve.

[0012] In some embodiments of the present invention, the system includes a second shuttle valve, wherein the second shuttle valve is located between the first solenoid valve and the first shuttle valve.

[0013] In some embodiments of the present invention, the left pilot handle control valve includes a swing control valve and a boom control valve. When the first solenoid valve is in the second working state, the boom control valve is used to control the excavator to travel in a straight line, and the swing control valve is used to control the excavator to turn.

[0014] In some embodiments of the utility model, the number of two-position four-way electromagnetic valves in the first electromagnetic valve is four, and the number of two-position four-way electromagnetic valves in the second electromagnetic valve is two.

[0015] According to another aspect of the utility model, a kind of excavator is also disclosed, the excavator includes the mode switching system as any one of the above embodiments.

[0016] The excavating mode and the slippage transfer mode switching system of the excavator and the excavator disclosed in the above embodiment, the first electromagnetic valve is arranged between the left pilot handle control valve and the multi-way valve, so that in the first working state of the first electromagnetic valve, the rotation control unit and the boom control unit of the left pilot handle control valve and the multi-way valve are connected, in the second working state of the first electromagnetic valve, the travel control unit of the left pilot handle control valve and the multi-way valve is connected;The switching system can make the excavator work in the excavating state or the slippage transfer state by switching the working state of the first electromagnetic valve, i.e. in the excavating mode, the first electromagnetic valve is in the first working state, and the travel control of the excavator is realized by the travel control valve, in the slippage transfer mode, the first electromagnetic valve is in the second working state, and at this time, the travel control of the excavator in the slippage transfer mode can be realized by the left pilot handle control valve;Therefore, the switching system not only can realize the switching of the excavating mode and the slippage transfer mode, so that the same excavator can work in the excavating mode and the slippage transfer mode, and in the slippage transfer mode, the travel of the excavator can be controlled by the left pilot handle, thereby improving the working efficiency of the excavator.

[0017] The additional advantages, objects, and features of the present utility model will be in part apparent and in part pointed out hereinafter in the description of the utility model, and will be learned by those of ordinary skill in the art after studying the following detailed description of the utility model, or can be known according to the practice of the utility model. The purposes and other advantages of the present utility model can be realized and obtained by the structure specifically pointed out in the written description and its claims and the drawings.

[0018] Those skilled in the art will understand that the purposes and advantages that can be realized by the present utility model are not limited to the above specific description, and the above and other purposes that can be realized by the present utility model will be more clearly understood according to the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings described herein are used to provide further understanding of the present utility model, constitute a part of the present application, and do not constitute a limitation on the present utility model. The components in the drawings are not drawn to scale, but are only used to show the principles of the present utility model. In order to facilitate the showing and describing some parts of the present utility model, the corresponding parts in the drawings can be enlarged, i.e. can become larger than other components in the exemplary device actually manufactured according to the present utility model. In the drawings:

[0020] Figure 1 The present invention is a structural diagram of a switching system between an excavation mode and a sliding transfer mode of an excavator according to an embodiment of the present invention.

[0021] Reference numerals:

[0022] Travel control valve 100 Left pilot handle control valve 200 Right pilot handle control valve 300 Swing control valve 210 Arm control valve 220 Bucket control valve 310 Arm control valve 320 First solenoid valve 410 Second solenoid valve 420 First shuttle valve 510 Second shuttle valve 520 DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiment of the present invention more clear, the embodiment of the present invention is further described in detail with reference to the accompanying drawings. Here, the exemplary embodiment of the present invention and its description are used to explain the present invention, but are not intended to limit the present invention.

[0024] It should be noted here that in order to avoid obscuring the present invention due to unnecessary details, only the structures and / or processing steps closely related to the scheme according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0025] It should be emphasized that the terms “include / comprises / has” when used herein refer to the existence of features, elements, steps or components, but do not exclude the existence or addition of one or more other features, elements, steps or components.

[0026] It should also be noted that the directional terms used in this specification are relative to the positions shown in the accompanying drawings. Unless otherwise specified, the term "connected" herein refers not only to direct connection but also to indirect connection involving an intermediary. A direct connection refers to a connection between two components without the aid of an intermediate component, while an indirect connection refers to a connection between two components with the aid of other components.

[0027] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the accompanying drawings, the same reference numerals represent the same or similar components.

[0028] Figure 1 This is a schematic diagram of the structure of the excavator's excavation mode and slip transfer mode switching system according to an embodiment of the present invention. Figure 1 As shown, the excavation mode and skid transfer mode switching system of the excavator at least includes a travel control valve 100 , a left pilot handle control valve 200 , a right pilot handle control valve 300 and a first solenoid valve 410 .

[0029] Among them, the input end of the walking control valve 100, the input end of the left pilot handle control valve 200 and the input end of the right pilot handle control valve 300 are all connected to the oil source valve outlet of the excavator, the output end of the walking control valve 100 is used to be connected to the walking control unit of the multi-way valve of the excavator, the output end of the left pilot handle control valve 200 and the output end of the right pilot handle control valve 300 are both used to be connected to the multi-way valve, the first solenoid valve 410 is located between the left pilot handle control valve 200 and the multi-way valve, the first solenoid valve 410 connects the left pilot handle control valve 200 and the rotation control unit and the dipper arm control unit of the multi-way valve in the first working state, and the first solenoid valve 410 connects the left pilot handle control valve 200 and the walking control unit of the multi-way valve in the second working state.

[0030] In this embodiment, the first solenoid valve 410 is in the first and second operating states, respectively, corresponding to the excavator's excavation mode and slip-transfer mode. Specifically, in excavation mode, the excavator's travel is controlled by the travel control valve, and the left and right pilot handles are manipulated to achieve excavation. In slip-transfer mode, the excavator's travel is controlled by both the left pilot handle and the travel control valve, while the right pilot handle controls the adjustment arm, thereby achieving slip-transfer. Therefore, the system allows the excavator to freely switch between operating modes and slip-transfer mode, allowing the excavator to operate in both excavation and slip-transfer modes. This allows both excavation and slip-transfer operations to be accomplished using a single excavator, reducing operating costs and improving efficiency.

[0031] Furthermore, the right pilot handle control valve 300 includes a bucket control valve 310 and an arm control valve 320. The output of the bucket control valve 310 is connected to the bucket control unit of the multi-way valve, while the output of the arm control valve 320 is connected to the boom control unit or the adjustable arm control unit of the multi-way valve. In the excavator's digging mode, the excavator can control travel, slewing, arm, bucket, and boom. In the excavator's skidding mode, the excavator can control travel and adjustable arm.

[0032] Further, the system further comprises a second electromagnetic valve 420, the second electromagnetic valve 420 is located between the branch arm control valve 320 and the multi-way valve, the second electromagnetic valve 420 connects the boom control unit of the branch arm control valve 320 and the multi-way valve in the first working state, and the second electromagnetic valve 420 connects the adjusting arm control unit of the branch arm control valve 320 and the multi-way valve in the second working state. In this embodiment, the second electromagnetic valve 420 is in the first working state, and the excavator works in the digging mode; the second electromagnetic valve 420 is in the second working state, and the excavator works in the sliding transfer mode. For example, the first electromagnetic valve 410 and the second electromagnetic valve 420 can both be two-position four-way electromagnetic valves; the first working state of the two-position four-way electromagnetic valve is a power-off state, and the second working state is a power-on state. That is, when the first two-position four-way electromagnetic valve is powered off, the left pilot handle control valve 200 in the digging mode is used to realize the bucket rod control and the slewing control of the excavator; when the first two-position four-way electromagnetic valve is powered on, the left pilot handle control valve 200 is used to realize the travel control of the excavator; similarly, when the second two-position four-way electromagnetic valve is powered off, the right pilot handle realizes the bucket control and the boom control in the digging mode; when the second two-position four-way electromagnetic valve is powered on, the right pilot handle realizes the bucket control and the adjusting arm control in the sliding transfer mode. It can be understood that in this embodiment, the first electromagnetic valve 410 and the second electromagnetic valve 420 are both two-position four-way electromagnetic valves, which is only a relatively optimal example, and in other embodiments, the first electromagnetic valve 410 and the second electromagnetic valve 420 can also be other types of electromagnetic valves.

[0033] In addition, as shown in Figure 1 , the left pilot handle control valve 200 specifically includes a slewing control valve 210 and a bucket rod control valve 220, and the right pilot handle control valve 300 specifically includes a bucket control valve 310 and a branch arm control valve 320; at this time, the first electromagnetic valve 410 includes four two-position four-way electromagnetic valves, and the second electromagnetic valve 420 includes two two-position four-way electromagnetic valves.

[0034] In other embodiments, the system further comprises a first shuttle valve 510, the first shuttle valve 510 is located between the output end of the travel control valve 100 and the travel control unit, and the first electromagnetic valve 410 is located between the left pilot handle control valve 200 and the first shuttle valve 510. As shown in Figure 1 , the travel control valve 100 specifically includes a left travel control valve and a right travel control valve; at this time, the number of the first shuttle valve 510 is four, and the four first shuttle valves 510 are connected with the travel control unit of the multi-way valve.

[0035] In the above embodiment, a first shuttle valve 510 is installed on the hydraulic branch line for the excavator's travel control. When the excavator's travel is controlled via the left pilot handle control valve 200, a corresponding shuttle valve is also installed between the outlet of the first solenoid valve 410 and the travel control unit of the multi-way valve. Specifically, the system further includes a second shuttle valve 520, which is located between the first solenoid valve 410 and the first shuttle valve 510.

[0036] In the above embodiment, when the first solenoid valve 410 is de-energized, the excavator operates in the excavation mode. At this time, the swing control valve 210 in the left pilot handle control valve 200 performs swing control of the excavator, and the arm control valve 220 in the left pilot handle control valve 200 performs arm control of the excavator. However, when the first solenoid valve 410 is energized, the excavator operates in the slip-transfer mode. The swing control valve 210 in the left pilot handle control valve 200 performs turning control in the slip-transfer mode, and the arm control valve 220 in the left pilot handle control valve 200 performs straight-line control in the slip-transfer mode. In addition, when the second solenoid valve 420 is simultaneously de-energized, the bucket control valve 310 in the right pilot handle control valve 300 completes the bucket control of the excavator, and the arm control valve 320 completes the boom control; and when the second solenoid valve 420 is energized, the bucket control valve 310 in the right pilot handle control valve 300 completes the transfer bucket control, and the arm control valve 320 completes the adjusting arm control.

[0037] Correspondingly, the present invention further provides an excavator, which includes the excavation mode and sliding transfer mode switching system of the excavator as described in any of the above embodiments.

[0038] In the excavation mode and sliding transfer mode switching system of the excavator disclosed in the above embodiment, the two-position four-way solenoid valve is not energized. At this time, the excavator is in excavation mode, and the driver controls the travel valve to make the excavator move, and controls the left and right pilot handles to realize excavation; when the two-position four-way solenoid valve is energized, the driver controls the left pilot handle and the travel valve to respectively control the crawler excavator to move, such as when the left pilot handle is pushed forward, the excavator moves forward, when the left pilot handle is pushed backward, the excavator moves backward, when the left pilot handle is pushed to the left, the excavator turns left and moves forward, and when the left pilot handle is pushed to the right, the excavator turns right and moves forward. At this time, the working device of the excavator is adjusted to the transfer state, and when the bucket is converted to the transfer bucket, the two-position four-way solenoid valve in the second solenoid valve 420 is energized, and the boom control of the right pilot handle is switched to the adjusting arm control, realizing the sliding transfer mode.

[0039] Through the above embodiments, it can be found that in the mode switching system and the excavator, a first solenoid valve is provided between the left pilot handle control valve and the multi-way valve, so that in a first working state of the first solenoid valve, the left pilot handle control valve is connected to the rotation control unit and the dipper arm control unit of the multi-way valve, and in a second working state of the first solenoid valve, the left pilot handle control valve is connected to the travel control unit of the multi-way valve. The mode switching system can enable the excavator to operate in an excavation state or a sliding transfer state by switching the working state of the first solenoid valve. That is, in the excavation mode, the first solenoid valve is in the first working state, and the travel control valve is used to control the excavator's travel. In the sliding transfer mode, the first solenoid valve is in the second working state, and the travel control valve is used to control the excavator's travel in the sliding transfer mode. Therefore, the switching system can not only realize the switching between the excavation mode and the sliding transfer mode, but also enable the same excavator to operate in both the excavation mode and the sliding transfer mode. In the sliding transfer mode, the left pilot handle control valve is used to control the excavator's travel, thereby improving the working efficiency of the excavator.

[0040] In the present invention, features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, and / or combined with or replace features of other embodiments.

[0041] The above-listed embodiments show and describe the basic principles and main features of the present invention, but the present invention is not limited to the above-mentioned embodiments. Any modifications, equivalent changes and modifications made to the present invention by those skilled in the art without making any creative work should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A system for switching between an excavator's excavation mode and a skid transfer mode, characterized in that: The switching system includes a travel control valve, a left pilot handle control valve, a right pilot handle control valve, and a first solenoid valve; The input end of the travel control valve, the input end of the left pilot handle control valve and the input end of the right pilot handle control valve are all connected to the oil source valve outlet of the excavator, the output end of the travel control valve is used to be connected to the travel control unit of the multi-way valve of the excavator, the output end of the left pilot handle control valve and the output end of the right pilot handle control valve are both used to be connected to the multi-way valve, the first solenoid valve is located between the left pilot handle control valve and the multi-way valve, the first solenoid valve connects the left pilot handle control valve and the rotation control unit and the dipper arm control unit of the multi-way valve in the first working state, and the first solenoid valve connects the left pilot handle control valve and the travel control unit of the multi-way valve in the second working state.

2. The excavator excavation mode and skid transfer mode switching system according to claim 1, characterized in that: The right pilot handle control valve includes a bucket control valve and an arm control valve. The output end of the bucket control valve is used to connect to the bucket control unit of the multi-way valve, and the output end of the arm control valve is used to connect to the boom control unit or the adjusting arm control unit of the multi-way valve.

3. The excavator excavation mode and skid transfer mode switching system according to claim 2, characterized in that: The system also includes a second solenoid valve, which is located between the arm control valve and the multi-way valve. In the first working state, the second solenoid valve connects the arm control valve and the boom control unit of the multi-way valve. In the second working state, the second solenoid valve connects the arm control valve and the regulating arm control unit of the multi-way valve.

4. The excavator excavation mode and skid transfer mode switching system according to claim 3, characterized in that: The first solenoid valve and the second solenoid valve are both two-position four-way solenoid valves.

5. The excavator excavation mode and skid transfer mode switching system according to claim 4, characterized in that: The first working state is a power-off state, and the second working state is a power-on state.

6. The excavator excavation mode and skid transfer mode switching system according to claim 1, characterized in that: The system includes a first shuttle valve located between an output end of the travel control valve and the travel control unit, and the first solenoid valve is located between the left pilot handle control valve and the first shuttle valve.

7. The excavator excavation mode and skid transfer mode switching system according to claim 6, characterized in that: The system includes a second shuttle valve located between the first solenoid valve and the first shuttle valve.

8. The excavator excavation mode and skid transfer mode switching system according to claim 1, characterized in that: The left pilot handle control valve includes a swing control valve and a boom control valve. When the first solenoid valve is in the second working state, the boom control valve is used to control the excavator to travel in a straight line, and the swing control valve is used to control the excavator to turn.

9. The excavator excavation mode and skid transfer mode switching system according to claim 4, characterized in that: The number of the two-position four-way solenoid valves in the first solenoid valve is four, and the number of the two-position four-way solenoid valves in the second solenoid valve is two.

10. An excavator, characterized in that: The excavator includes the mode switching system according to any one of claims 1 to 9.

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