CN216241146U - Electric drive transmission device and engineering machinery - Google Patents
Electric drive transmission device and engineering machinery Download PDFInfo
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- CN216241146U CN216241146U CN202122886358.7U CN202122886358U CN216241146U CN 216241146 U CN216241146 U CN 216241146U CN 202122886358 U CN202122886358 U CN 202122886358U CN 216241146 U CN216241146 U CN 216241146U
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Abstract
The utility model provides an electric drive transmission device and engineering machinery, belonging to the technical field of engineering machinery, and comprising: a motor; the hydraulic pump is in transmission connection with the motor; the connecting cover is connected between the motor and the hydraulic pump, one side of the connecting cover, which is close to the motor, is provided with a positioning structure matched with the end part of the motor, and one side of the connecting cover, which is close to the hydraulic pump, is provided with a positioning hole matched with the end part of the hydraulic pump. According to the electric drive transmission device provided by the utility model, the connecting cover is connected between the motor and the hydraulic pump so as to protect the connection between the motor and the hydraulic pump by using the connecting cover, and the connecting cover is connected with the motor and the hydraulic pump in a positioning manner by arranging the positioning structure and the positioning hole on the connecting cover, so that the coaxiality of the connection between the motor and the hydraulic pump is ensured.
Description
Technical Field
The utility model relates to the technical field of engineering machinery, in particular to an electric drive transmission device and engineering machinery.
Background
At present, electric engineering machines such as an electric excavator are in a research and development stage, technologies such as electric drive transmission mostly adopt mature new energy automobile technologies, but the traditional engineering machines including the excavator are greatly different from new energy automobiles. The traditional excavator is mainly driven to work by hydraulic power provided by a hydraulic pump, and after a motor is in transmission connection with the hydraulic pump, the connection between the motor and the hydraulic pump is lack of positioning and protection.
SUMMERY OF THE UTILITY MODEL
The object of the present invention is therefore to provide an electric drive transmission that overcomes the disadvantages of the prior art, such as the lack of positioning and protection of the connection between the electric motor and the hydraulic pump.
In order to solve the above problems, the present invention provides an electric drive transmission including: a motor; the hydraulic pump is in transmission connection with the motor; the connecting cover is connected between the motor and the hydraulic pump, one side of the connecting cover, which is close to the motor, is provided with a positioning structure matched with the end part of the motor, and one side of the connecting cover, which is close to the hydraulic pump, is provided with a positioning hole matched with the end part of the hydraulic pump.
Optionally, the connecting cover includes the cover body, first connection ring body and second connection ring body, first connection ring body set up in the cover body is close to the one end of motor, first connection ring body is followed the outside protrusion setting in periphery of the cover body, location structure set up in on the first connection ring body, the second connection ring body set up in the cover body is close to the one end of hydraulic pump, the second is connected the ring body and is followed the outside protrusion setting in periphery of the cover body or the setting of inwards extending, the locating hole does the inner circle of second connection ring body.
Optionally, the positioning structure is a positioning groove, and the positioning groove is disposed along an inner periphery of the first connection ring body.
Optionally, the positioning structure is a positioning protrusion protruding from an end surface of the first connection ring body.
Optionally, a first hole body used for being connected with the motor is arranged on the first connecting ring body, and a second hole body used for being connected with the hydraulic pump is arranged on the second connecting ring body.
Optionally, the electric drive transmission further comprises a leg structure, and the leg structure is detachably connected with the connecting cover.
Optionally, a third hole body used for being connected with the supporting leg structure is formed in the connecting cover.
Optionally, a motor shaft of the motor and a pump shaft of the hydraulic pump are in transmission connection through a coupling.
The utility model also provides engineering machinery comprising the electric drive transmission device.
Optionally, the work machine is an electric excavator.
The utility model has the following advantages:
1. according to the electric drive transmission device provided by the utility model, the connecting cover is connected between the motor and the hydraulic pump so as to protect the connection between the motor and the hydraulic pump by using the connecting cover, and the connecting cover is connected with the motor and the hydraulic pump in a positioning manner by arranging the positioning structure and the positioning hole on the connecting cover, so that the coaxiality of the connection between the motor and the hydraulic pump is ensured.
2. According to the electric drive transmission device provided by the utility model, the first connecting ring body and the second connecting ring body are arranged on the cover body, so that the first connecting ring body and the second connecting ring body are utilized to arrange the positioning structure and the positioning hole, and the electric drive transmission device is connected and positioned with the motor and the hydraulic pump.
3. According to the electric drive transmission device provided by the utility model, the positioning structure is arranged to be the positioning groove or the positioning protrusion so as to be matched with the motor and the hydraulic pump for positioning, the positioning mode is simple, and the operation is convenient.
4. According to the electric drive transmission device, the supporting leg structure is arranged to support the connecting cover in an auxiliary mode, so that the electric drive transmission device is supported, and the stability of the whole structure is guaranteed.
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 description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 illustrates a schematic cross-sectional front view of an electric drive transmission provided in accordance with an embodiment of the present invention;
FIG. 2 is a schematic view of a first angle configuration of a connection hood provided by an embodiment of the present invention;
FIG. 3 is a schematic view of a second angle of the connection hood provided by an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a second embodiment of a joint boot according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a third embodiment of a connection hood provided by an example of the present invention;
fig. 6 shows a schematic view of the overall structure of an electric drive transmission provided with a leg structure according to an embodiment of the present invention.
Description of reference numerals:
10. a motor; 11. a motor shaft; 20. a hydraulic pump; 21. a pump shaft; 30. a connecting cover; 31. a positioning groove; 32. positioning the projection; 33. positioning holes; 34. a cover body; 35. a first connecting ring body; 351. a first aperture body; 36. a second connecting ring body; 361. a second aperture body; 37. a third porous body; 40. a leg structure; 50. a coupling is provided.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
One embodiment of an electric drive transmission as shown in fig. 1 to 6, the electric drive transmission comprising: motor 10, hydraulic pump 20 and connecting cover 30, hydraulic pump 20 is connected with the transmission of motor 10, and connecting cover 30 is connected between motor 10 and hydraulic pump 20, and is concrete, and one side that connecting cover 30 is close to motor 10 is provided with location structure, cooperatees through the tip of location structure with motor 10, and one side that connecting cover 30 is close to hydraulic pump 20 is provided with locating hole 33, cooperatees through the tip of locating hole 33 with hydraulic pump 20.
The connection cover 30 is connected between the motor 10 and the hydraulic pump 20 to protect the connection between the motor 10 and the hydraulic pump 20 by the connection cover 30, and the connection cover 30 is connected with the motor 10 and the hydraulic pump 20 in a positioning manner by providing the positioning structure and the positioning hole 33 on the connection cover 30, so that the coaxiality of the connection between the motor 10 and the hydraulic pump 20 is ensured.
As shown in fig. 1 to 6, the connection cover 30 includes a cover body 34, a first connection ring body 35 and a second connection ring body 36, the first connection ring body 35 is disposed at one end of the cover body 34 close to the motor 10, the first connection ring body 35 is disposed along an outer periphery of the cover body 34 in an outward protruding manner, the positioning structure is disposed on the first connection ring body 35, the second connection ring body 36 is disposed at one end of the cover body 34 close to the hydraulic pump 20, the second connection ring body 36 is disposed along an outer periphery of the cover body 34 in an outward protruding manner or in an inward extending manner, and the positioning hole 33 is an inner ring of the second connection ring body 36.
The first and second connection ring bodies 35 and 36 are provided on the housing 34 to provide a positioning structure and a positioning hole 33 using the first and second connection ring bodies 35 and 36 to connect and position the motor 10 and the hydraulic pump 20.
Specifically, as shown in fig. 1 to fig. 3, in the present embodiment, the positioning structure may be a positioning groove 31, that is, the positioning groove 31 is formed on the first connection ring body 35, and the positioning groove 31 is disposed along the inner circumference of the first connection ring body 35, and correspondingly, a protruding portion is disposed on the front end surface of the motor 10, and the protruding portion is connected to a groove wall of the positioning groove 31; as shown in fig. 1 to 3, correspondingly, the second connecting ring body 36 extends inwards along the outer wall of the cover 34, the positioning hole 33 is formed on the inner periphery of the second connecting ring body 36, correspondingly, an annular boss is arranged on the end surface of the hydraulic pump 20, the annular boss is inserted into the positioning hole 33, and the outer periphery of the annular boss is connected with the hole wall of the positioning hole 33.
Of course, as shown in fig. 4, in other embodiments, the positioning structure may also use the positioning protrusion 32, that is, the positioning protrusion 32 may also be disposed on the first connection ring body 35, the positioning protrusion 32 is disposed along the inner circumference of the first connection ring body 35, and correspondingly, the front end surface of the motor 10 is provided with a recess portion, and the recess portion is connected with the positioning protrusion 32 in a matching manner.
It should be noted that the above-mentioned "front end surface of the motor 10" refers to a surface of a front end cover of the motor 10, that is, an end surface of the motor 10 on a side close to the output end of the motor shaft 11.
As shown in fig. 5 and 6, the second connection ring 36 may also be outwardly protruded along the outer wall of the housing 34. The specific shape and size of the second connection ring body 36 may be set according to the shape and size of the end surface of the hydraulic pump 20 connected thereto. For example, when the tonnage of the construction machine is less than 25 tons and the power of the motor 10 is less than 150kW, the second connection ring body 36 extends inward along the outer wall of the cover 34; when the tonnage of the construction machine is greater than or equal to 25 tons and the power of the motor 10 is greater than or equal to 150kW, the second connection ring body 36 is outwardly protruded along the outer wall of the cover body 34, so that the connection area between the connection cover 30 and the hydraulic pump 20 is increased, and the connection stability is improved.
In the present embodiment, as shown in fig. 1 to 4, a first hole 351 for connecting with the motor 10 is provided on the first connection ring body 35, a second hole 361 for connecting with the hydraulic pump 20 is provided on the second connection ring body 36, correspondingly, a third hole 37 corresponding to the first hole 351 is provided on the motor 10, a fourth hole corresponding to the second hole 361 is provided on the hydraulic pump 20, and fastening members are provided in the first hole 351 and the third hole 37, and the second hole 361 and the fourth hole to connect the connection cover 30 with the motor 10 and the hydraulic pump 20.
In this embodiment, the first hole 351 is disposed along the first connecting ring 35 at intervals in the circumferential direction, and the second hole 361 is disposed along the second connecting ring 36 at intervals in the circumferential direction.
Of course, the connection cover 30, the motor 10 and the hydraulic pump 20 may be connected by other connection methods.
As shown in fig. 6, the electric drive transmission further includes a leg structure 40, and the leg structure 40 is detachably connected to the connecting cover 30. Specifically, as shown in fig. 2 and 5, a third hole 37 for connecting with the leg structure 40 is formed on the outer wall of the cover body 34, the upper end of the leg structure 40 is connected with the connecting cover 30 through a fastener and the third hole 37, and the lower end of the leg structure 40 is supported at a predetermined position.
Through setting up leg structure 40 in order to carry out auxiliary stay to connecting cover 30, and then play the supporting role to the transmission that drives of electricity, guarantee overall structure's stability.
It should be noted that whether the electric drive transmission device is provided with the leg structure 40 or not can be set according to the tonnage of the construction machine and the power of the motor 10, for example, when the tonnage of the construction machine is less than five tons and the power of the motor 10 is less than 30kW, the leg structure 40 may not be provided, and the hydraulic pump 20 can be supported only by the connecting cover 30; when the tonnage of the engineering machinery is more than or equal to five tons and the power of the motor 10 is more than or equal to 30kW, the supporting leg structure 40 needs to be arranged to support the connecting cover 30 in an auxiliary manner.
As shown in fig. 1, the motor shaft 11 of the motor 10 and the pump shaft 21 of the hydraulic pump 20 are drivingly connected by a coupling 50, and specifically, the coupling 50 is a quincunx coupling.
Utilize the plum coupling to carry out the transmission with motor shaft 11 and pump shaft 21 and be connected, the transmission mode is simple and the transmission is steady, and the distance between motor 10 and the hydraulic pump 20 is shorter, has reduced occupation space.
Specifically, in the present embodiment, as shown in fig. 1, the left half of the double clutch coupling is connected to the motor shaft 11, and is fastened to the motor shaft 11 by a bolt penetrating through the left half of the double clutch coupling; the right half of the double ring coupling is connected to the pump shaft 21 and is fastened to the pump shaft 21 by bolts that pass through the right half of the double ring coupling. And the left half part of the plum blossom coupling and the right half part of the plum blossom coupling are connected through a plum blossom end clamping position, a certain gap is formed at the butt joint part, and a gasket is arranged in the gap, so that the deviation compensation in all directions can be met.
The embodiment also provides a specific implementation mode of the engineering machine, which comprises the electric drive transmission device.
In this embodiment, the construction machine is an electric excavator. Of course, the work machine may also be another electric work machine.
When the electric drive transmission device of the embodiment is used, the connecting cover 30 is connected between the end face of the motor 10 and the end face of the hydraulic pump 20, the positioning groove 31 is matched with the convex part on the end face of the motor 10, and the positioning hole 33 is matched with the annular boss on the end face of the hydraulic pump 20, so that the coaxiality of the motor shaft 11 and the pump shaft 21 is ensured; and, the motor shaft 11 and the pump shaft 21 are connected by a quincunx coupling.
According to the above description, the present invention has the following advantages:
1. the fit tolerance of the positioning groove/the positioning bulge and the motor and the fit tolerance of the positioning hole and the hydraulic pump are guaranteed, so that the assembly tolerance of the motor and the hydraulic pump is guaranteed within the range of the radial deviation correction amount and the angular deviation correction amount of the coupler, and the coaxiality of a motor shaft and a pump shaft is guaranteed;
2. the motor shaft and the pump shaft are in transmission connection through the plum coupling, the transmission mode is simple and stable, the distance between the motor and the hydraulic pump is short, and the occupied space is reduced;
3. utilize the landing leg structure to carry out auxiliary stay to the connecting cover, guarantee overall structure's stability.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.
Claims (10)
1. An electric drive transmission, comprising:
a motor (10);
the hydraulic pump (20) is in transmission connection with the motor (10);
the connecting cover (30) is connected between the motor (10) and the hydraulic pump (20), one side of the connecting cover (30) close to the motor (10) is provided with a positioning structure matched with the end part of the motor (10), and one side of the connecting cover (30) close to the hydraulic pump (20) is provided with a positioning hole (33) matched with the end part of the hydraulic pump (20).
2. The electric drive transmission device according to claim 1, wherein the connection cover (30) includes a cover body (34), a first connection ring body (35) and a second connection ring body (36), the first connection ring body (35) is disposed at one end of the cover body (34) close to the electric motor (10), the first connection ring body (35) is disposed along an outer periphery of the cover body (34) in a protruding manner, the positioning structure is disposed on the first connection ring body (35), the second connection ring body (36) is disposed at one end of the cover body (34) close to the hydraulic pump (20), the second connection ring body (36) is disposed along an outer periphery of the cover body (34) in a protruding manner or extending manner, and the positioning hole (33) is an inner ring of the second connection ring body (36).
3. The electric drive transmission according to claim 2, characterized in that the positioning structure is a positioning groove (31), the positioning groove (31) being provided along an inner circumference of the first connection ring body (35).
4. The electric drive transmission according to claim 2, characterized in that the positioning structure is a positioning projection (32) provided projecting from an end face of the first coupling ring body (35).
5. Electric drive transmission according to any one of claims 2-4, characterized in that the first connection ring body (35) is provided with a first aperture body (351) for connection with the electric motor (10), and the second connection ring body (36) is provided with a second aperture body (361) for connection with the hydraulic pump (20).
6. An electric drive transmission according to any one of claims 1 to 4, further comprising a leg structure (40), the leg structure (40) being removably connected to the connecting cover (30).
7. Electric drive transmission according to claim 6, characterized in that the connection hood (30) is provided with a third aperture (37) for connection to the leg structure (40).
8. An electric drive transmission according to any one of claims 1-4, characterized in that the motor shaft (11) of the motor (10) and the pump shaft (21) of the hydraulic pump (20) are drivingly connected by a coupling (50).
9. A working machine comprising an electric drive transmission according to any one of claims 1-8.
10. The work machine of claim 9, wherein the work machine is an electric excavator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122886358.7U CN216241146U (en) | 2021-11-23 | 2021-11-23 | Electric drive transmission device and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122886358.7U CN216241146U (en) | 2021-11-23 | 2021-11-23 | Electric drive transmission device and engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216241146U true CN216241146U (en) | 2022-04-08 |
Family
ID=80954863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122886358.7U Active CN216241146U (en) | 2021-11-23 | 2021-11-23 | Electric drive transmission device and engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216241146U (en) |
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2021
- 2021-11-23 CN CN202122886358.7U patent/CN216241146U/en active Active
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