CN209943466U

CN209943466U - Hydraulic variable-speed transmission case of wheel excavator

Info

Publication number: CN209943466U
Application number: CN201920520665.3U
Authority: CN
Inventors: 张俊梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-17
Filing date: 2019-04-17
Publication date: 2020-01-14
Anticipated expiration: 2029-04-17

Abstract

The utility model discloses a hydraulic variable transmission case of a wheeled excavator, which comprises an input shaft and an output shaft; the input shaft is provided with an advancing transmission disc and a retreating transmission disc, and a primary transmission shaft sleeve and a secondary transmission shaft sleeve are sleeved on two end faces of the input shaft corresponding to the advancing transmission disc; the first-stage transmission shaft sleeve and the second-stage transmission shaft sleeve are respectively provided with a first input gear and a second input gear; one end face of the backward transmission disc is provided with a backward engaging groove, one end of the input shaft corresponding to the backward engaging groove is sleeved with a third-stage transmission shaft sleeve, and a third input gear is arranged on the third-stage transmission shaft sleeve. The utility model can output different rotating speeds according to the advancing or retreating of the wheel type excavator, thereby being more convenient to operate the wheel type excavator; when the vehicle advances, the first input gear or the second input gear can output two different rotating speeds; the utility model has the advantages of being reasonable in structure and convenient in operation, can make wheeled excavator travel at the operation low-speed, travel with high speed when the transition, show and improve the operating efficiency.

Description

Hydraulic variable-speed transmission case of wheel excavator

Technical Field

The utility model relates to an excavator variable speed technical field, concretely relates to wheeled excavator hydraulic variable transmission case.

Background

The wheel type excavator walking integral structure is characterized in that an engine transmits the walking integral structure to a hydraulic transmission torque converter, and the output of the hydraulic torque converter drives a gearbox. The gear box is one of the important transmission parts of the excavator, and is responsible for transmitting the speed and the torque transmitted by the engine to a final transmission system, changing the transmission ratio between the engine and wheels, realizing the forward and reverse gear operation of the excavator, and realizing the cutting off of the power transmitted to the walking device under the condition of the running of the engine so as to meet the operation and running requirements of the excavator and facilitate the starting and stopping safety of the engine.

The speed changer of the prior hydraulic drive wheel type excavator has the following defects: under different working conditions, when high and low speed gear shifting is needed; if the gear is not damaged or deformed even during the shifting process, the excavator cannot work normally, the working efficiency is reduced, the disassembly and the maintenance are difficult, and the maintenance cost is high; the hydraulic drive wheel type excavator needs to run at low speed when working and at high speed when turning, so that the working efficiency can be improved; the speed change structure of the existing hydraulic drive wheel type excavator can not meet the requirements of low-speed working condition running during working and high-speed running during transition at the same time, has a complex structure, needs to frequently step on and release a clutch during operation, has high operation strength, and is easy to cause fatigue of operators.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model aims at providing a wheeled excavator hydraulic variable transmission case can improve wheeled excavator's variable speed efficiency.

The utility model adopts the technical proposal that: a hydraulic variable-speed transmission case of a wheeled excavator comprises an input shaft and an output shaft; the input shaft is provided with an advancing transmission disc and a retreating transmission disc, and a primary transmission shaft sleeve and a secondary transmission shaft sleeve are sleeved on two end faces of the input shaft corresponding to the advancing transmission disc; the primary transmission shaft sleeve and the secondary transmission shaft sleeve are respectively provided with a first input gear and a second input gear; the end surfaces of the advancing transmission disc, the first input gear and the second input gear, which are opposite to each other, are provided with advancing clutch plates, and when the primary transmission shaft sleeve and the secondary transmission shaft sleeve move along the input shaft, the advancing clutch plates can be clamped/separated with the advancing clutch grooves; one end face of the backward transmission disc is provided with a backward clutch groove, one end of the input shaft, which corresponds to the backward clutch groove, is sleeved with a third-stage transmission shaft sleeve, a third input gear is arranged on the third-stage transmission shaft sleeve, and the end face of the third input gear is provided with a backward clutch plate which can be clamped with or separated from the backward clutch groove. And the output shaft is provided with a first output gear, a second output gear and a third output gear which are respectively meshed with the first input gear, the second input gear and the third input gear.

In the technical scheme, the hydraulic variable-speed transmission system can output different rotating speeds according to the advancing or retreating of the wheel type excavator, so that the wheel type excavator is more convenient to operate; when the vehicle advances, the first input gear or the second input gear can output two different rotating speeds; specifically, when the wheel type excavator moves forwards, the advancing clutch plate of the first input gear can be clamped into the advancing clutch groove of the advancing transmission disc, the first output gear meshed with the first input gear can output high rotating speed, when the wheel type excavator moves forwards at high speed and needs to move at low speed, the advancing clutch plate of the first input gear is separated from the advancing clutch groove of the advancing transmission disc, meanwhile, the advancing clutch plate of the second input gear is clamped into the advancing clutch groove of the advancing transmission disc, the second output gear meshed with the second input gear can output low rotating speed, and the wheel type excavator moves forwards at low speed. When the wheel type excavator retreats, the third output gear mainly outputs low rotating speed, the end face of the third input gear meshed with the third output gear is provided with a retreating clutch plate, and the retreating clutch plate can be clamped with a retreating clutch groove of a retreating transmission disc, so that the wheel type excavator can move at low speed when retreating.

The technical scheme is convenient to shift, the wheel type excavator can run at a low speed during running and at a high speed during transition, and the operation efficiency is obviously improved.

The preferable technical scheme is characterized in that a clutch friction layer is arranged on each side surface in the forward clutch groove and the backward clutch groove.

Thus, the clutch friction layers in the forward clutch groove and the reverse clutch groove can improve the tightness of the engagement with the forward clutch plate and the reverse clutch plate, and further improve the torque transmission efficiency.

The preferable technical scheme is characterized in that the first input gear is connected with a primary driving oil cylinder, a primary thrust bearing sleeved on the input shaft is arranged between the primary driving oil cylinder and the first input gear, and the primary driving oil cylinder is connected with a first driving oil pump.

The first driving oil pump can drive the first-stage driving oil cylinder to push the advancing clutch plate of the first output gear to be clamped with or separated from the advancing clutch groove, so that the wheel type excavator moves forwards at a high-speed rotating speed.

The preferable technical scheme is characterized in that the second input gear is connected with a secondary driving oil cylinder, a secondary thrust bearing sleeved on the input shaft is arranged between the secondary driving oil cylinder and the second input gear, and the secondary driving oil cylinder is connected with a second driving oil pump.

The second driving oil pump can drive the second-stage driving oil cylinder to push the advancing clutch plate of the second output gear to be clamped with or separated from the advancing clutch groove, so that the wheel type excavator moves forwards at a low-speed rotating speed.

The optimized technical scheme is characterized in that a third input gear is connected with a third-level driving oil cylinder, a third-level thrust bearing sleeved on the input shaft is arranged between the third-level driving oil cylinder and the third input gear, and the third-level driving oil cylinder is connected with a third driving oil pump.

The third driving oil pump can drive the three-stage driving oil cylinder to push the retreating clutch plate of the third output gear to be clamped or separated with or from the retreating clutch groove, so that the wheel type excavator retreats at a low speed.

The preferable technical scheme is characterized in that the first driving oil pump, the second driving oil pump and the third driving oil pump are connected with a speed change controller, and the speed change controller is arranged in a cab.

The speed change controller can control the first driving oil pump, the second driving oil pump and the third driving oil pump to operate, and automatic speed change is achieved.

The utility model has the advantages that: the hydraulic variable-speed transmission box of the wheel type excavator can output different rotating speeds according to the advancing or retreating of the wheel type excavator, so that the wheel type excavator can be operated more conveniently; when the vehicle advances, the first input gear or the second input gear can output two different rotating speeds; the utility model has the advantages of being reasonable in structure and convenient in operation, can make wheeled excavator travel at the operation low-speed, travel with high speed when the transition, show and improve the operating efficiency. Can be widely applied to the operation and application of the wheel type excavator.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a structural view of a hydraulic transmission case of a wheeled excavator according to a first embodiment.

In the drawings, each reference numeral indicates the following; the device comprises an input shaft 1, a forward transmission disc 2, a forward clutch groove 201, a first input gear 3, a forward clutch plate 4, a second input gear 5, a backward transmission disc 6, a backward clutch groove 601, a third input gear 7, a backward clutch plate 8, a primary driving oil cylinder 9, a primary thrust bearing 10, a first driving oil pump 11, a secondary driving oil cylinder 12, a secondary thrust bearing 13, a second driving oil pump 14, a tertiary driving oil cylinder 15, a tertiary thrust bearing 16, a third driving oil pump 17, a first output gear 18, a second output gear 19, a third output gear 20, an output shaft 21 and a speed change controller 22.

Detailed Description

Here, it is to be noted that the functions, methods, and the like related to the present invention are only conventional adaptive applications of the related art. Therefore, the present invention is an improvement of the prior art, which substantially lies in the connection relationship between hardware, not in the functions and methods themselves, that is, the present invention relates to a few functions and methods, but does not include the improvements proposed in the functions and methods themselves. The present invention is described for better illustration of the function and method for better understanding of the present invention.

As shown in fig. 1, in an embodiment, the present invention provides a hydraulic transmission case for a wheel excavator, wherein the hydraulic transmission case can output different rotation speeds according to the forward or backward movement of the wheel excavator, so as to further facilitate the operation of the wheel excavator; when the bicycle is driven forwards, the bicycle can output two different rotating speeds through the first input gear 3 or the second input gear 5, and mainly comprises an input shaft 1 and an output shaft 21; the input shaft 1 is provided with an advancing transmission disk 2 and a retreating transmission disk 6, and a primary transmission shaft sleeve and a secondary transmission shaft sleeve are sleeved on two end faces of the input shaft 1 corresponding to the advancing transmission disk 2; the first-stage transmission shaft sleeve and the second-stage transmission shaft sleeve are respectively provided with a first input gear 3 and a second input gear 5; the end surfaces of the advancing transmission disc 2, which are opposite to the first input gear 3 and the second input gear 5, are provided with advancing clutch plates 4, and when the primary transmission shaft sleeve and the secondary transmission shaft sleeve move along the input shaft 1, the advancing clutch plates 4 can be clamped/separated with the advancing clutch grooves 201; the output shaft 21 is provided with a first output gear 18 and a second output gear 19 which are engaged with the first input gear 3 and the second input gear 5, respectively. When the wheel type excavator moves forwards, the advancing clutch plate 4 of the first input gear 3 can be clamped into the advancing clutch groove 201 of the advancing transmission disc 2, the first output gear 18 meshed with the first input gear 3 can output high rotating speed, when the wheel type excavator moves forwards at high speed and needs to move at low speed, the advancing clutch plate 4 of the first input gear 3 is separated from the advancing clutch groove 201 of the advancing transmission disc 2, meanwhile, the advancing clutch plate 4 of the second input gear 5 is clamped into the advancing clutch groove 201 of the advancing transmission disc 2, the second output gear meshed with the second input gear 5 can output low rotating speed, and the wheel type excavator moves forwards at low speed. The wheel excavator can run at a low speed during operation and run at a high speed during transition, and the working efficiency is remarkably improved.

As shown in fig. 1, one end surface of the backward transmission disc 6 is provided with a backward engaging groove 601, one end of the input shaft 1 corresponding to the backward engaging groove 601 is sleeved with a third transmission shaft sleeve, the third transmission shaft sleeve is provided with a third input gear 7, and an end surface of the third input gear 7 is provided with a backward engaging and disengaging plate 8 capable of engaging with and disengaging from the backward engaging groove 601. A third output gear 20 that meshes with the third input gear 7 is attached to the output shaft 21. When the wheel excavator moves backward, a low rotation speed is mainly output from the third output gear 20, and the end surface of the third input gear 7 that meshes with the third output gear 20 has a backward clutch plate 8, and the backward clutch plate 8 can be engaged with the backward clutch groove 601 of the backward transmission disc 6, so that the wheel excavator can move at a low speed when moving backward.

As shown in fig. 1, a clutch friction layer is provided on each side surface in the forward clutch groove 201 and the reverse clutch groove 601. The clutch friction layers in the forward clutch groove 201 and the reverse clutch groove 601 can improve the tightness of engagement with the forward clutch plate 4 and the reverse clutch plate 8, thereby improving the torque transmission efficiency.

As shown in fig. 1, the first input gear 3 is connected with a primary driving oil cylinder 9, a primary thrust bearing 10 sleeved on the input shaft 1 is arranged between the primary driving oil cylinder 9 and the first input gear 3, and the primary driving oil cylinder 9 is connected with a first driving oil pump 11. The first drive oil pump 11 can drive the primary drive oil cylinder 9 to push the forward clutch plate 4 of the first output gear 18 to engage with or disengage from the forward clutch groove 201, so that the wheel excavator can move forward at a high speed.

As shown in fig. 1, the second input gear 5 is connected to a second stage driving oil cylinder 12, a second stage thrust bearing 13 sleeved on the input shaft 1 is arranged between the second stage driving oil cylinder 12 and the second input gear 5, and the second stage driving oil cylinder 12 is connected to a second driving oil pump 14. The second drive oil pump 14 can drive the second-stage drive oil cylinder 12 to push the forward clutch plate 4 of the second output gear 19 to engage with or disengage from the forward clutch groove 201, so that the wheel excavator moves forward at a low speed.

As shown in fig. 1, the third input gear 7 is connected to a third-stage driving oil cylinder 15, a third-stage thrust bearing 16 sleeved on the input shaft 1 is arranged between the third-stage driving oil cylinder 15 and the third input gear 7, and the third-stage driving oil cylinder 15 is connected to a third driving oil pump 17. The third drive oil pump 17 can drive the three-stage drive cylinder 15 to push the reverse clutch plate 8 of the third output gear 20 to engage with or disengage from the reverse clutch groove 601, and the wheel excavator can be caused to reverse at a low rotational speed.

As shown in fig. 1, the first drive oil pump 11, the second drive oil pump 14, and the third drive oil pump 17 are connected to a shift controller 22, and the shift controller 22 is provided in the cabin. The transmission controller 22 can control the first drive oil pump 11, the second drive oil pump 14, and the third drive oil pump 17 to operate, and realize automatic transmission.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral combinations thereof; may be an electrical connection; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the specification of the present invention, a large number of specific details are explained. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, systems, and techniques have not been shown in detail in order not to obscure an understanding of this description.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, system, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, systems, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. The utility model provides a wheeled excavator hydraulic variable transmission case which characterized in that: comprises an input shaft (1) and an output shaft (21);

the input shaft (1) is provided with an advancing transmission disc (2) and a retreating transmission disc (6), and a primary transmission shaft sleeve and a secondary transmission shaft sleeve are sleeved on two end faces of the input shaft (1) corresponding to the advancing transmission disc (2); the primary transmission shaft sleeve and the secondary transmission shaft sleeve are respectively provided with a first input gear (3) and a second input gear (5); the end faces of the advancing transmission disc (2) opposite to the first input gear (3) and the second input gear (5) are provided with advancing clutch plates (4), and when the primary transmission shaft sleeve and the secondary transmission shaft sleeve move along the input shaft (1), the advancing clutch plates (4) can be clamped/separated with the advancing clutch grooves (201);

one end face of the backward transmission disc (6) is provided with a backward clutch groove (601), one end of the input shaft (1) corresponding to the backward clutch groove (601) is sleeved with a three-stage transmission shaft sleeve, the three-stage transmission shaft sleeve is provided with a third input gear (7), and the end face of the third input gear (7) is provided with a backward clutch plate (8) which can be clamped with or separated from the backward clutch groove (601);

and a first output gear (18), a second output gear (19) and a third output gear (20) which are respectively meshed with the first input gear (3), the second input gear (5) and the third input gear (7) are arranged on the output shaft (21).

2. The hydraulic variable transmission case of a wheeled excavator according to claim 1, wherein:

and clutch friction layers are arranged on the side surfaces in the forward clutch groove (201) and the backward clutch groove (601).

3. The hydraulic variable transmission case of a wheeled excavator according to claim 1, wherein:

first input gear (3) are connected with one-level driving oil cylinder (9), be equipped with between one-level driving oil cylinder (9) and first input gear (3) and establish one-level thrust bearing (10) on input shaft (1), one-level driving oil cylinder (9) are connected with first drive oil pump (11).

4. The hydraulic variable transmission case of a wheeled excavator according to claim 3, wherein:

the second input gear (5) is connected with a second-stage driving oil cylinder (12), a second-stage thrust bearing (13) which is sleeved on the input shaft (1) is arranged between the second-stage driving oil cylinder (12) and the second input gear (5), and the second-stage driving oil cylinder (12) is connected with a second driving oil pump (14).

5. The hydraulic variable transmission case of a wheeled excavator according to claim 4, wherein:

third input gear (7) are connected with tertiary driving oil cylinder (15), be equipped with between tertiary driving oil cylinder (15) and third input gear (7) and establish tertiary thrust bearing (16) on input shaft (1), tertiary driving oil cylinder (15) are connected with third drive oil pump (17).

6. The hydraulic variable transmission case of a wheeled excavator according to claim 5, wherein:

the first driving oil pump (11), the second driving oil pump (14) and the third driving oil pump (17) are connected with a speed change controller (22), and the speed change controller (22) is arranged in a cockpit.