CN219191894U

CN219191894U - Double-power transmission device and engineering machinery

Info

Publication number: CN219191894U
Application number: CN202223349031.7U
Authority: CN
Inventors: 王进; 任洪涛; 毕秀秀; 侯友坤; 杜金山
Original assignee: Shandong Lingong Construction Machinery Co Ltd
Current assignee: Shandong Lingong Construction Machinery Co Ltd
Priority date: 2022-12-13
Filing date: 2022-12-13
Publication date: 2023-06-16
Anticipated expiration: 2032-12-13

Abstract

The utility model relates to the technical field of engineering machinery, in particular to a double-power transmission device and engineering machinery. The double-power transmission device comprises a transfer case, a first driving piece, a second driving piece and a power output piece, wherein the transfer case comprises a gear transmission assembly, a first power input shaft, a second power input shaft and a first power output shaft, the first power input shaft, the second power input shaft and the first power output shaft are respectively connected with the gear transmission assembly, and the gear transmission assembly comprises a normally open clutch and a normally closed clutch. The setting of transfer case can make the first power input axle and the second power input axle of transfer case be connected with two power supplies respectively, and the transfer case can receive the power that provides of two different power supplies, can control the work of power take off according to different power like this, compares in prior art, does not need to additionally increase the pump package any more, uses transfer case pipeline setting also can be relatively simple, and the cost is lower relatively.

Description

Double-power transmission device and engineering machinery

Technical Field

The utility model relates to the technical field of engineering machinery, in particular to a double-power transmission device and engineering machinery.

Background

In the occasions such as ports, wharfs, steel scrap factories, resource recycling and the like, the operation places are fixed, zero emission and no pollution can be realized by using equipment such as an electric excavator or a grabbing machine, and meanwhile, compared with the diesel type equipment of the same ton level, on one hand, the electric charge is far less than the diesel charge, on the other hand, the maintenance cost of an engine is high, and the comprehensive operation cost can be reduced by about 50%; the electric excavator can adopt a power battery such as a lithium battery as a power source to supply power to the motor, but the power battery has high cost and small endurance, and has the problems of long charging time, influence on the operation efficiency and the like for long-time continuous operation working conditions; in order to solve the charging problem, the current partial scheme is realized by quick power change, but the power battery has relatively high cost, high purchase cost, large occupation of capital for clients and long investment balance period time; aiming at the problem, the operation characteristics of a fixed place basically are combined with the working condition, a power-pulling type or power-inserting type scheme is partially adopted, and energy supply is realized through external alternating current, so that compared with a power battery scheme, the cost is low, and the fund pressure of primary purchasing machines of customers is low; however, compared with the power battery scheme, the drag-type or plug-in type has the problems of difficult transition due to the necessity of an external power supply, and additional equipment is required for transition.

In order to solve the problem, the excavator in the prior art adopts a double-power scheme, so that a conventional diesel engine and a main pump system are reserved, and a set of hydraulic systems such as a motor, a main pump and the like are additionally added; under the condition of transition or power failure, a diesel engine is utilized to supply power to a main pump hydraulic system to provide power for the whole machine, so as to realize transition or operation; in the convenient electric scene, through external power supply, utilize motor drive main pump work, realize the operation. The double-power excavator is provided with two types of power, namely electric power and an internal combustion engine, so that the emission of pollutants can be reduced when electric energy is used, and the internal combustion engine can be used for working in the occasion without an external power supply, thereby avoiding the defect that the working place of the pure electric excavator is limited. However, the dual power system connects two power sources to independent hydraulic pumps, and the two sets of hydraulic pumps are connected to hydraulic valves, hydraulic motors and other elements by using the same pipelines so as to realize independent functions of the two power sources.

However, the independent action of power is realized by two sets of hydraulic pumps, which causes the cost increase of the existing engineering machinery.

Therefore, a dual-power transmission device is needed to solve the above technical problems.

Disclosure of Invention

The utility model aims to provide a double-power transmission device and engineering machinery, which can realize double-power input, improve the universality of the transmission device and reduce the cost.

To achieve the purpose, the utility model adopts the following technical scheme:

a dual power transmission device comprising:

the transfer case comprises a gear transmission assembly, a first power input shaft, a second power input shaft and a first power output shaft, wherein the first power input shaft, the second power input shaft and the first power output shaft are respectively connected with the gear transmission assembly, the gear transmission assembly comprises a normally open clutch and a normally closed clutch, one of the normally open clutch and the normally closed clutch is connected with the second power input shaft, and the other is connected with the first power input shaft;

a first drive member and a second drive member, one of which is connected to the first power input shaft and the other of which is connected to the second power input shaft;

and the power output piece is connected with the first power output shaft.

As a preferable technical scheme of the double-power transmission device, the first power input shaft or the second power input shaft is in transmission connection with a hydraulic component for controlling the normally open clutch to be opened or closed with the normally closed clutch.

As a preferable technical scheme of the double-power transmission device, the hydraulic assembly comprises a hydraulic pump, a switching valve and a switching valve, the gear transmission assembly further comprises a normally open clutch oil cylinder and a normally closed clutch oil cylinder, the hydraulic pump is communicated with an oil inlet of the switching valve, an oil outlet of the switching valve is respectively and selectively communicated with the normally open clutch oil cylinder and the normally closed clutch oil cylinder, the normally open clutch oil cylinder and the normally closed clutch oil cylinder are also respectively communicated with an oil inlet of the switching valve, and an oil outlet of the switching valve is communicated with an oil tank.

As a preferable technical scheme of the double-power transmission device, a first one-way valve is arranged between an oil outlet of the switching valve and the normally-open clutch oil cylinder, the first one-way valve is used for conducting the switching valve to the normally-open clutch oil cylinder in a one-way mode, a second one-way valve is arranged between the oil outlet of the switching valve and the normally-closed clutch oil cylinder, and the second one-way valve is used for conducting the switching valve to the normally-closed clutch oil cylinder in a one-way mode.

As a preferable technical scheme of the double-power transmission device, the hydraulic assembly further comprises a sequence valve, an oil inlet of the sequence valve is communicated with an oil outlet of the second one-way valve, and an oil outlet of the sequence valve is communicated with an oil outlet of the first one-way valve.

As a preferable technical scheme of the double-power transmission device, the switching valve is a two-position three-way valve.

As a preferable technical scheme of the double-power transmission device, the switch valve is a two-position two-way valve.

As a preferable technical scheme of the double-power transmission device, the hydraulic assembly further comprises an overflow valve which is arranged in parallel with the switch valve, and an oil outlet of the overflow valve is communicated with the oil tank.

As a preferable technical scheme of the double-power transmission device, the gear transmission assembly further comprises a second power output shaft, a first transmission gear and a second transmission gear, wherein the first transmission gear is arranged on the first power input shaft or the second power input shaft, the second transmission gear is arranged on the second power output shaft, the first transmission gear is meshed with the second transmission gear, the second power output shaft is connected with the hydraulic assembly, and the first power input shaft provided with the first transmission gear or the second power input shaft provided with the first transmission gear is connected with the normally open clutch.

The utility model also provides engineering machinery comprising the double-power transmission device according to any scheme.

The utility model has the beneficial effects that:

the double-power transmission device comprises a transfer case, a first driving piece, a second driving piece and a power output piece, wherein the transfer case comprises a gear transmission assembly, a first power input shaft, a second power input shaft and a first power output shaft, the first power input shaft, the second power input shaft and the first power output shaft are respectively connected with the gear transmission assembly, the gear transmission assembly comprises a normally open clutch and a normally closed clutch, one of the normally open clutch and the normally closed clutch is connected with the second power input shaft, and the other is connected with the first power input shaft; one of the first driving piece and the second driving piece is connected with the first power input shaft, and the other one is connected with the second power input shaft; the power output piece is connected with the first power output shaft. The transfer case is provided, the first power input shaft and the second power input shaft of the transfer case can be connected with two power sources respectively, the transfer case can receive power provided by two different power sources, and therefore the power output part can be controlled to work according to different powers.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic diagram of a dual power transmission device according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a transfer case according to an embodiment of the present utility model.

In the figure:

1. a transfer case; 11. a first power input shaft; 12. a second power input shaft; 13. a first power take-off shaft; 141. a normally open clutch; 142. a normally closed clutch; 143. a second power take-off shaft; 144. a first transmission gear; 145. a second transmission gear; 146. a third transmission gear; 147. a fourth transmission gear; 148. normally open clutch cylinder; 149. normally closed clutch oil cylinder; 15. a first driving member; 16. a second driving member; 2. a hydraulic assembly; 21. a hydraulic pump; 22. a switching valve; 23. a switch valve; 24. a first one-way valve; 25. a second one-way valve; 26. a sequence valve; 27. an overflow valve; 28. an oil tank; 3. a power take-off.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

In the prior art, the excavator adopts a double-power scheme, on one hand, a conventional diesel engine and a main pump system are reserved, and a set of hydraulic systems such as a motor, a main pump and the like are additionally added; under the condition of transition or power failure, a diesel engine is utilized to supply power to a main pump hydraulic system to provide power for the whole machine, so as to realize transition or operation; in the convenient electric scene, through external power supply, utilize motor drive main pump work, realize the operation. The double-power excavator is provided with two types of power, namely electric power and an internal combustion engine, so that the emission of pollutants can be reduced when electric energy is used, and the internal combustion engine can be used for working in the occasion without an external power supply, thereby avoiding the defect that the working place of the pure electric excavator is limited. However, the dual power system connects two power sources to independent hydraulic pumps, and the two sets of hydraulic pumps are connected to hydraulic valves, hydraulic motors and other elements by using the same pipelines so as to realize independent functions of the two power sources.

Therefore, the embodiment of the utility model provides the double-power transmission device and the engineering machinery, and the double-power transmission device can realize double-power input on the premise of not adding an independent hydraulic pump, so that the manufacturing cost is reduced.

As shown in fig. 1 and 2, the double-power transmission device comprises a transfer case 1, a first driving member 15, a second driving member 16 and a power output member 3, wherein the transfer case 1 comprises a gear transmission assembly, a first power input shaft 11, a second power input shaft 12 and a first power output shaft 13, the first power input shaft 11, the second power input shaft 12 and the first power output shaft 13 are respectively connected with the gear transmission assembly, the gear transmission assembly comprises a normally open clutch 141 and a normally closed clutch 142, one of the normally open clutch 141 and the normally closed clutch 142 is connected with the second power input shaft 12, and the other is connected with the first power input shaft 11; one of the first driving member 15 and the second driving member 16 is connected to the first power input shaft 11, and the other is connected to the second power input shaft 12; the power take-off 3 is connected to a first power take-off shaft 13.

The arrangement of the transfer case 1 can enable the first power input shaft 11 and the second power input shaft 12 of the transfer case 1 to be connected with two power sources respectively, the transfer case 1 can receive power provided by two different power sources, and thus the power output piece 3 can be controlled to work according to different powers.

In this embodiment, the first power input shaft 11 or the second power input shaft 12 is in driving connection with a hydraulic assembly 2 for controlling the opening and closing of the normally open clutch 141 and the normally closed clutch 142. The hydraulic assembly 2 can provide opening or closing power for opening and closing the normally open clutch 141 and the normally closed clutch 142, so that the operation of the normally open clutch 141 and the normally closed clutch 142 of the transfer case 1 can be controlled while the operation of the transfer case 1 is realized.

Specifically, with continued reference to fig. 1, the hydraulic assembly 2 includes a hydraulic pump 21, a switching valve 22, and a switching valve 23, the gear assembly further includes a normally open clutch cylinder 148 and a normally closed clutch cylinder 149, the hydraulic pump 21 is in communication with an oil inlet of the switching valve 22, an oil outlet of the switching valve 22 is in selective communication with the normally open clutch cylinder 148 and the normally closed clutch cylinder 149, the normally open clutch cylinder 148 is in friction plate connection with the normally open clutch 141, the normally closed clutch cylinder 149 is in friction plate connection with the normally closed clutch 142, the hydraulic pump 21 provides a power oil source for the oil entering the normally open clutch cylinder 148 and the normally closed clutch cylinder 149, the normally open clutch cylinder 148 and the normally closed clutch cylinder 149 are also in communication with an oil inlet of the switching valve 23, and an oil outlet of the switching valve 23 is in communication with the oil tank 28.

Through the control of the oil charge of the normally open clutch oil cylinder 148 and the normally closed clutch oil cylinder 149, the power output part 3 can be selectively connected with the first driving part 15 or the second driving part 16 according to actual needs, and the power output part 3 can be selectively connected with the first driving part 15 or the second driving part 16 according to actual needs, so that different power output needs can be met. The first driving element 15 and the second driving element 16 may be either one motor or the other motor, or both motors.

In this embodiment, when the first driving member 15 is required to provide power, the hydraulic pump 21 works and charges the normally open clutch cylinder 148 and the normally closed clutch 142 with oil through the switching valve 22, so that the normally open clutch 141 is closed, the normally closed clutch 142 is disengaged, and only the first driving member 15 is connected with the power output member 3; when the second driving member 16 is required to provide power, the hydraulic pump 21 does not work because the first driving member 15 does not operate, and the normally open clutch cylinder 148 and the normally closed clutch cylinder 149 are not filled with oil, so that the normally open clutch 141 is disengaged, the normally closed clutch 149 is closed, and only the second driving member 16 is connected with the power output member 3; when the first driving member 15 and the second driving member 16 are required to simultaneously supply power, the switching valve 22 is switched to the left station to work by providing a switching control signal for the switching valve 22, and then the hydraulic pump 21 only supplies oil to the normally open clutch cylinder 148 through the switching valve 22 to keep the normally open clutch cylinder 148 closed, and meanwhile, the normally closed clutch 142 is kept closed, and at the moment, the first driving member 15 and the second driving member 16 are simultaneously connected with the power output member 3.

In addition, in actual operation, the clutch is closed for a long time or is frequently switched, so that the oil temperature in the oil cylinder is high, and the clutch oil cylinder needs to be fully cooled to ensure the operation reliability. In this embodiment, a first check valve 24 is disposed between the oil outlet of the switching valve 22 and the normally open clutch cylinder 148, the first check valve 24 is used for conducting the switching valve 22 to the normally open clutch cylinder 148 in a one-way manner, and a second check valve 25 is disposed between the oil outlet of the switching valve 22 and the normally closed clutch cylinder 149, and the second check valve 25 is used for conducting the switching valve 22 to the normally closed clutch cylinder 149 in a one-way manner. Meanwhile, a switch valve 23 is further arranged between the oil return port of the normally open clutch oil cylinder 148 and the oil return port of the normally closed clutch oil cylinder 149 and the oil tank 28, the normally open clutch oil cylinder 148 and the normally closed clutch oil cylinder 149 are respectively communicated with an oil inlet of the switch valve 23, an oil outlet of the switch valve 23 is communicated with the oil tank 28, and a control oil port of the switch valve 23 is communicated with an oil outlet of the hydraulic pump 21. Therefore, when the hydraulic pump 21 works, the control oil of the switch valve 23 pushes the valve core to act, the switch valve 23 is kept closed, and at the moment, the normally open clutch oil cylinder 148 and the normally closed clutch oil cylinder 149 can be normally filled with oil and maintain pressure; when the hydraulic pump 21 stops working, the switch valve 23 works at a conduction station, high-temperature oil in the normally open clutch oil cylinder 148 and the normally closed clutch oil cylinder 149 can be unloaded to the oil tank 28, the first one-way valve 24 and the second one-way valve 25 can ensure that clutch oil cannot return to the original way, and when the clutch is continuously working or frequently switched, the high-temperature oil in the clutch cannot return to the original way and be stored in a pipeline, so that the local high temperature of an oil way is caused to influence the working. For example, the switching valve 22 is a two-position three-way solenoid valve. The on-off valve 23 is a two-position two-way valve.

The hydraulic assembly 2 further comprises a sequence valve 26, the oil inlet of the sequence valve 26 being in communication with the oil outlet of the second non-return valve 25, the oil outlet of the sequence valve 26 being in communication with the oil outlet of the first non-return valve 24. The arrangement of the sequence valve 26 can supply oil to the normally open clutch 141 when the normally closed clutch 142 builds up to proper pressure, namely, the clutch is released, so that the normally open clutch 141 is closed, the critical state that both clutches are combined is avoided, the first driving piece 15 is prevented from reversely dragging the second driving piece 16, and the universality and the reliability of the system are improved.

In this embodiment, the hydraulic assembly 2 further comprises a relief valve 27 arranged in parallel with the on-off valve 23, the outlet of the relief valve 27 being in communication with a tank 28. The relief valve 27 can protect the hydraulic assembly 2 from excessive pressure of the hydraulic assembly 2 affecting the overall operation.

In this embodiment, with continued reference to fig. 2, the gear assembly further includes a second power output shaft 143, a first transmission gear 144, a second transmission gear 145, a third transmission gear 146, and a fourth transmission gear 147, the first transmission gear 144 being disposed on the first power input shaft 11 or the second power input shaft 12, the second transmission gear 145 being disposed on the second power output shaft 143, the first transmission gear 144 meshing with the second transmission gear 145, the second power output shaft 143 being connected to the hydraulic assembly 2, the first transmission gear 144 being disposed to power the hydraulic pump 21 in the hydraulic assembly 2. The first power input shaft 11 provided with the first transmission gear 144 or the second power input shaft 12 provided with the first transmission gear 144 is connected to the normally open clutch 141. The third transmission gear 146 is disposed outside the clutch housing and fixedly connected thereto, and the normally closed clutch 142 and the normally open clutch 141 are disposed within the clutch housing, which together use one clutch housing. The fourth transmission gear 147 is connected to the first power output shaft 13, and the third transmission gear 146 is meshed with the fourth transmission gear 147 to achieve power output to the first power output shaft 13 by rotation of the clutch housing.

The utility model also provides engineering machinery, which comprises the double-power transmission device provided by the embodiment of the utility model.

Because the double-power transmission device is included, the engineering machinery provided by the embodiment of the utility model has all the advantages and beneficial effects of the embodiment, and the description is omitted here.

Furthermore, the foregoing description of the preferred embodiments and the principles of the utility model is provided herein. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.

Claims

1. A dual power transmission device, comprising:

the transfer case (1), the transfer case (1) comprises a gear transmission assembly, a first power input shaft (11), a second power input shaft (12) and a first power output shaft (13), wherein the first power input shaft (11), the second power input shaft (12) and the first power output shaft (13) are respectively connected with the gear transmission assembly, the gear transmission assembly comprises a normally open clutch (141) and a normally closed clutch (142), one of the normally open clutch (141) and the normally closed clutch (142) is connected with the second power input shaft (12), and the other is connected with the first power input shaft (11);

a first driving member (15) and a second driving member (16), wherein one of the first driving member (15) and the second driving member (16) is connected with the first power input shaft (11), and the other is connected with the second power input shaft (12);

-a power take-off (3), said power take-off (3) being connected to said first power take-off (13).

2. The double power transmission device according to claim 1, characterized in that the first power input shaft (11) or the second power input shaft (12) is in transmission connection with a hydraulic assembly (2) for adjusting the opening and closing of the normally open clutch (141) and the normally closed clutch (142).

3. The double power transmission device according to claim 2, characterized in that the hydraulic assembly (2) comprises a hydraulic pump (21), a switching valve (22) and a switching valve (23), the gear transmission assembly further comprises a normally open clutch cylinder (148) and a normally closed clutch cylinder (149), the hydraulic pump (21) is communicated with an oil inlet of the switching valve (22), an oil outlet of the switching valve (22) is selectively communicated with the normally open clutch cylinder (148) and the normally closed clutch cylinder (149), the normally open clutch cylinder (148) and the normally closed clutch cylinder (149) are also communicated with an oil inlet of the switching valve (23), and an oil outlet of the switching valve (23) is communicated with an oil tank (28).

4. A double power transmission device according to claim 3, characterized in that a first one-way valve (24) is arranged between the oil outlet of the switching valve (22) and the normally open clutch cylinder (148), the first one-way valve (24) is used for one-way conduction from the switching valve (22) to the normally open clutch cylinder (148), a second one-way valve (25) is arranged between the oil outlet of the switching valve (22) and the normally closed clutch cylinder (149), and the second one-way valve (25) is used for one-way conduction from the switching valve (22) to the normally closed clutch cylinder (149).

5. Double power transmission according to claim 4, characterized in that the hydraulic assembly (2) further comprises a sequence valve (26), the oil inlet of the sequence valve (26) being in communication with the oil outlet of the second non-return valve (25), the oil outlet of the sequence valve (26) being in communication with the oil outlet of the first non-return valve (24).

6. A double power transmission device according to claim 3, characterized in that the switching valve (22) is a two-position three-way valve.

7. A double power transmission device according to claim 3, characterized in that the on-off valve (23) is a two-position two-way valve.

8. A double power transmission according to claim 3, characterized in that the hydraulic assembly (2) further comprises a relief valve (27) arranged in parallel with the on-off valve (23), the outlet of the relief valve (27) being in communication with a tank (28).

9. The double power transmission device according to claim 2, characterized in that the gear transmission assembly further comprises a second power output shaft (143), a first transmission gear (144) and a second transmission gear (145), the first transmission gear (144) is arranged on the first power input shaft (11) or the second power input shaft (12), the second transmission gear (145) is arranged on the second power output shaft (143), the first transmission gear (144) is meshed with the second transmission gear (145), the second power output shaft (143) is connected with the hydraulic assembly (2), and the first power input shaft (11) provided with the first transmission gear (144) or the second power input shaft (12) provided with the first transmission gear (144) is connected with the normally open clutch.

10. A working machine comprising a double power transmission device according to any one of claims 1-9.