CN111255005A - Electric excavator - Google Patents
Electric excavator Download PDFInfo
- Publication number
- CN111255005A CN111255005A CN202010185002.8A CN202010185002A CN111255005A CN 111255005 A CN111255005 A CN 111255005A CN 202010185002 A CN202010185002 A CN 202010185002A CN 111255005 A CN111255005 A CN 111255005A
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- Prior art keywords
- trailer
- output cable
- cable
- excavator
- electric excavator
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- 238000007789 sealing Methods 0.000 claims description 6
- 238000005299 abrasion Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000012856 packing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G11/00—Arrangements of electric cables or lines between relatively-movable parts
- H02G11/006—Arrangements of electric cables or lines between relatively-movable parts using extensible carrier for the cable, e.g. self-coiling spring
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The invention provides an electric excavator, and relates to the technical field of engineering machinery. The electric excavator comprises an excavator device and a trailer power supply device. The excavator device comprises an upper vehicle and a lower vehicle, wherein the upper vehicle is rotatably connected with the lower vehicle. Trailer power supply unit includes trailer, outlet mechanism and output cable, and the trailer is connected in getting off, and outlet mechanism rotates and connects in the trailer, and output cable sets up in the trailer, and output cable passes through outlet mechanism and inserts and get on the bus in order to supply power to the excavator device. When the getting-on vehicle rotates relative to the getting-off vehicle to cause the output cable to swing, the wire outlet mechanism rotates relative to the trailer along with the output cable. The electric excavator cable is not easy to wear and has high working reliability.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to an electric excavator.
Background
In order to ensure the working duration of the electric excavator, a continuous power supply mode of a power supply system is often adopted. In the prior art, a trailer power supply device in the same row as the excavator can be provided to continuously supply power to the excavator. However, when the excavator is rotated, the cable connected between the upper vehicle and the trailer power supply unit is easily worn, and the operational reliability of the electric excavator is reduced.
Disclosure of Invention
The invention aims to provide an electric excavator, which is not easy to wear a cable and has high working reliability.
Embodiments of the invention may be implemented as follows:
in a first aspect, an embodiment provides an electric excavator, including:
the excavator device comprises an upper vehicle and a lower vehicle, and the upper vehicle is rotatably connected with the lower vehicle;
trailer power supply unit, trailer power supply unit include trailer, outgoing line mechanism and output cable, and the trailer is connected in getting off, and outgoing line mechanism rotates and connects in the trailer, and output cable sets up in the trailer, and output cable passes through outgoing line mechanism and inserts and get on the bus in order to the excavator device power supply, and when getting on the bus and rotating for getting off and lead to the output cable swing, outgoing line mechanism rotates along with the same relative trailer of output cable.
In an alternative embodiment, the exit mechanism is capable of 360 rotation relative to the trailer.
In an alternative embodiment, the cable outlet mechanism comprises a support member and a hub, the support member is rotatably connected to the trailer around a first rotating shaft, the hub is rotatably connected to the support member around a second rotating shaft, the output cable is wound on the hub, and an included angle is formed between the first rotating shaft and the second rotating shaft.
In an alternative embodiment, the outlet mechanism comprises a spring connected between the hub and the support, the spring being adapted to always have a tendency to retract when the output cable is pulled out of the hub.
In an alternative embodiment, the excavator device includes a wiring mechanism, the wiring mechanism is rotatably connected to the upper vehicle, the output cable is connected to the wiring mechanism through the wire outlet mechanism to supply power to the excavator device, and the wiring mechanism rotates together with the output cable relative to the upper vehicle when the upper vehicle rotates relative to the lower vehicle to cause the output cable to swing.
In an alternative embodiment, the wiring mechanism can be rotated 360 ° relative to the upper cart.
In an alternative embodiment, the connection device comprises a connection tube and a locking element arranged at one end of the connection tube, wherein the end of the connection tube remote from the locking element is rotatably connected to the upper vehicle, and the locking element is used for locking the output cable.
In an alternative embodiment, the terminal tube is provided with a seal for closing off a gap between the output cable and the inner wall of the terminal tube.
In an alternative embodiment, the inner wall of the junction box is provided with a gasket for preventing the output cable from wearing in the junction box.
In an alternative embodiment, the trailer power supply device comprises a cable slide wire, wherein the cable slide wire comprises a slide rail, a cable carrier and a flat cable, the cable carrier is slidably connected with the slide rail, the flat cable is connected with the cable carrier, and the flat cable can be extended or shortened when the cable carrier slides relative to the slide rail; the flat cable is electrically connected to a power source, and the output cable is electrically connected to the flat cable so that the trailer power supply device can supply power to the excavator device.
The embodiment of the invention has the beneficial effects that:
the electric excavator comprises an excavator device and a trailer power supply device. The excavator device comprises an upper vehicle and a lower vehicle, wherein the upper vehicle is rotatably connected with the lower vehicle. Trailer power supply unit includes trailer, outlet mechanism and output cable, and the trailer is connected in getting off, and outlet mechanism rotates and connects in the trailer, and output cable sets up in the trailer, and output cable passes through outlet mechanism and inserts and get on the bus in order to supply power to the excavator device. When the getting-on vehicle rotates relative to the getting-off vehicle to cause the output cable to swing, the wire outlet mechanism rotates relative to the trailer along with the output cable. When the electric excavator rotates during rotation operation, namely the upper vehicle rotates relative to the lower vehicle, the output cable between the upper vehicle and the trailer rotates relative to the trailer under the driving of the upper vehicle. Because output cable passes through outlet mechanism and inserts and get on the bus and outlet mechanism rotates and connect in the trailer to when electric excavator revolves the operation, outlet mechanism can rotate along with output cable together relative trailer, can reduce the wearing and tearing that produce between output cable and the trailer, the life-span of extension output cable, and improve electric excavator's operational reliability.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of an electric excavator according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a wiring mechanism in an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a wire feeding mechanism according to an embodiment of the present invention;
FIG. 4 is a swinging diagram of the output cable of the electric excavator during non-swing operation according to the embodiment of the invention;
fig. 5 is a swinging view of the output cable during swing work of the electric excavator according to the embodiment of the present invention.
Icon: 100-electric excavator; 110-a shovel device; 111-getting on the vehicle; 112-a wiring mechanism; 113-getting off the train; 114-a junction tube; 116-a retaining member; 117-pad; 118-a seal; 119-mounting a bushing; 130-trailer power supply; 131-a trailer; 132-a support; 133-a line outgoing mechanism; 134-a hub; 135-output cables; 136-a spiral spring; 137-a second rotating shaft; 140-cable slide; 141-a slide rail; 143-cable carrying vehicle; 145-flat cable.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
Referring to fig. 1, the present embodiment provides an electric excavator 100, which includes an excavator device 110 and a trailer power supply device 130. The excavator device 110 includes an upper vehicle 111 and a lower vehicle 113, and the upper vehicle 111 is rotatably coupled to the lower vehicle 113. The trailer power supply 130 includes a trailer 131, an outlet mechanism 133, and an output cable 135. The trailer 131 is connected to the lower vehicle 113, the outlet mechanism 133 is rotatably connected to the trailer 131, the output cable 135 is disposed on the trailer 131, and the output cable 135 is connected to the upper vehicle 111 through the outlet mechanism 133 to supply power to the excavator device 110. When the upper cart 111 rotates relative to the lower cart 113, causing the output cable 135 to rotate relative to the trailer 131, the exit mechanism 133 rotates with the output cable 135 relative to the trailer 131.
When the excavator device 110 moves forward, the trailer power supply device 130 is driven to move forward. The trailer 131 is hinged to the lower carriage 113 by a pin to increase the agile steering followed by the trailer 131. When the excavator device 110 performs a swing work on a horizontal ground, the upper vehicle 111 rotates about a vertical axis with respect to the lower vehicle 113. At this time, the output cable 135 connected between the upper cart 111 and the outlet mechanism 133 is driven by the upper cart 111 to rotate around the vertical axis relative to the trailer 131 and the upper cart 111, i.e. the output cable 135 swings in the horizontal direction. For example, when the excavator device 110 is not performing the swing work, the output cable 135 is parallel to the forward direction of the electric excavator 100, and when the excavator device 110 performs the swing work, the output cable 135 is not parallel to the forward direction of the electric excavator 100 but has an angle.
Referring to fig. 2, in the present embodiment, in order to further reduce the wear between the output cable 135 and the upper cart 111, the excavator device 110 includes a connection mechanism 112, the connection mechanism 112 is rotatably connected to the upper cart 111, and the output cable 135 is connected to the connection mechanism 112 through the wire outlet mechanism 133 to supply power to the excavator device 110. When the upper vehicle 111 rotates relative to the lower vehicle 113 to cause the output cable 135 to rotate relative to the upper vehicle 111, the connection mechanism 112 rotates with the output cable 135 relative to the upper vehicle 111.
Specifically, the wiring mechanism 112 is capable of rotating 111360 ° relative to the upper cart. The wire connection mechanism 112 includes a wire barrel 114 and a retaining member 116 disposed at one end of the wire barrel 114.
The end of the tube 114 remote from the locking member 116 is pivotally connected to the cart 111. in this embodiment, the tube 114 is vertically rotatable relative to the cart 111360. When excavator device 110 carries out the gyration operation, output cable 135 takes place to rotate, and under output cable 135's drive, wire connection pipe 114 can be around vertical axle nimble arbitrary angle of rotation of relatively getting on bus 111, prevents that wiring mechanism 112 from pulling and resisting wearing and tearing to output cable 135 by force, reduces the cable probability of wearing and tearing. In other embodiments, the maximum rotation angle of the wire connection mechanism 112 (i.e., the maximum rotation angle of the wire connection tube 114) may be less than 360 °, as long as the swinging requirement of the output cable 135 can be satisfied. The junction tube 114 is bent at 90 °, and the junction tube 114 can be flexibly rotated, so that the output cable 135 always points in parallel to the wire outlet mechanism 133 without being bent. The inner wall of the junction tube 114 is provided with a packing 117, and the output cable 135 packing 117 is used to prevent the output cable 135 from being worn in the junction tube 114. The pad 117 is made of a soft material and has a smooth surface, so that when the excavator device 110 performs a swing operation, even if the output cable 135 rotates around the vertical shaft, the output cable 135 in the connection pipe 114 and the pad 117 are in direct contact with each other, and thus, abrasion is not easily caused, and the reliability and safety of the electric excavator 100 are improved. In other embodiments, the bushing 114 may not have a gasket 117, and instead, the bushing 114 may have a smooth inner wall to reduce wear on the output cable 135.
The locking member 116 is used to lock the output cable 135. In this embodiment, the junction tube 114 is also provided with a seal 118. In detail, the end of the service pipe 114 remote from the upper carriage 111 is fitted with a mounting bush 119, and a seal 118 is attached to the inner wall of the mounting bush 119. In the present embodiment, the seal 118 is a rubber seal ring. In other embodiments, the seal 118 may be a plurality of seal blocks closely arranged in a circumferential direction. The seal 118 is used to close off the gap between the outgoing cable 135 and the inner wall of the junction box 114. Retaining member 116 is removably attached to the outer wall of mounting bushing 119 such that retaining member 116 encloses sealing member 118. The locking member 116 is a locking ring and the locking member 116 can lock the output cable 135 by pressing the sealing member 118. By providing the locking member 116 and the sealing member 118, a stable connection between the wiring mechanism 112 and the output cable 135 can be achieved, and water can be prevented from entering the wiring mechanism 112, thereby avoiding affecting the normal operation of the excavator device 110. The output cable 135 passes through the connection pipe 114 and enters the upper and lower vehicles 111 and 113 to supply power to the relevant electric mechanism.
It will be appreciated that in other embodiments, the wire barrel 114 may not be provided with the sealing member 118, and in this case, the sealing member 118 may be provided at the position where the wire barrel 114 is connected in the upper vehicle 111, and only needs to be provided according to actual needs. In other embodiments, the locking member 116 may be disposed inside the junction box 114, as long as the locking of the output cable 135 is achieved.
Referring to fig. 3, the wire outgoing mechanism 133 is rotatably connected to the trailer 131. In this embodiment, the exit mechanism 133 is able to rotate relative to the trailer 131360 to better prevent wear between the output cable 135 and the trailer 131. Specifically, the outlet mechanism 133 includes a support member 132 and a hub 134, the support member 132 is rotatably coupled to the trailer 131 about a first axis of rotation, and the support member 132 is capable of rotating 360 ° about the first axis of rotation. The hub 134 is rotatably connected to the supporting member 132 around a second rotating shaft 137, an included angle is formed between the second rotating shaft 137 and the first rotating shaft, the included angle is 90 ° in this embodiment, the first rotating shaft is a vertical axis, the second rotating shaft 137 is a horizontal physical shaft, and the second rotating shaft 137 is a part of the supporting member 132. In other embodiments, the included angle between the second rotating shaft and the first rotating shaft may be different from 90 °, and only needs to be set according to actual needs. Output cable 135 is wound around hub 134 to facilitate payout and payout. In other embodiments, the outlet mechanism 133 may not include the support member 132, and the support member 132 is fixed to the trailer 131, and the hub 134 is rotatably connected to the support member 132 about a vertical axis, so that when the excavator device 110 performs a swing operation, the hub 134 and the upper vehicle 111 rotate about the vertical axis, and the wear of the output cable 135 can be reduced. In other embodiments, the maximum rotation angle of the outlet mechanism 133 may be less than 360 °, so that the swing requirement of the output cable 135 is only required.
In this embodiment, the outlet mechanism 133 includes a spring 136, the spring 136 being connected between the hub 134 and the support 132, the spring 136 serving to keep the output cable 135 having a tendency to retract as it is pulled out of the hub 134. Specifically, as output cable 135 is paid out, hub 134 rotates in a forward direction about support 132, at which point spring 136 deforms between support 132 and hub 134, creating elastic potential energy such that hub 134 always has a tendency to rotate in a reverse direction, i.e., outlet mechanism 133 always has a tendency to retract output cable 135. Thus, the cable exit mechanism 133 can automatically retract the redundant cables between the trailer 131 and the upper cart 111 so that the output cables 135 maintain the proper tension, preventing the cables from sagging and catching up with other objects. In other embodiments, the wire outlet mechanism 133 may not include the spring 136, and only the output cable 135 needs to be stably connected between the wire outlet mechanism 133 and the wire connecting mechanism 112.
Therefore, in this embodiment, the rotatable wire outgoing mechanism 133 arranged on the trailer 131 and the rotatable wire connection mechanism 112 arranged on the upper cart 111 can flexibly rotate along with the swing of the output cable 135, so that the friction between the output cable 135 and the trailer 131 and the upper cart 111 is effectively reduced, the cable abrasion probability is reduced, the service life of the output cable 135 is prolonged, and the safety and reliability of the device are improved. It is understood that in other embodiments, only the wire outlet mechanism 133 may be configured to rotate, and the wire connecting mechanism 112 is fixed to the upper cart 111 and is not rotatable, which may also reduce the cable wear to some extent, and may be specifically configured as required.
In this embodiment, the output cable 135 is an integrated cable, and the integrated cable is used for transmission of power and signals. The integrated cable can realize double transmission of signals and electric power, can reduce occupied space, only needs to install or dismantle one cable when assembling, and reduces workload and safety risk. In other embodiments, output cable 135 may also be a non-integrated cable, i.e., power and signal lines run separately and independently of each other. The specific setting can be carried out according to the needs.
In addition, in the present embodiment, the trailer power supply device 130 includes the cable slide 140, the cable slide 140 includes a slide rail 141, a cable carrier 143, and a flat cable 145, the cable carrier 143 is slidably connected to the slide rail 141, the flat cable 145 is connected to the cable carrier 143, and the flat cable 145 can be extended or shortened when the cable carrier 143 slides relative to the slide rail 141. The flat cable 145 is electrically connected to a power source, and the output cable 135 is electrically connected to the flat cable 145 so that the trailer power supply device 130 can supply power to the excavator device 110. In addition, a transformer device is arranged on the trailer 131, and the output cable 135 is electrically connected with the flat cable 145 through the transformer device so as to convert the voltage of the cable slide wire 140 into a proper voltage and supply power to the excavator device 110. In another embodiment, a battery may be provided on the trailer 131 to supply power to the excavator device 110, but the battery needs to be replaced when the power is insufficient, which may affect the progress of the work.
The working principle and working process of the electric shovel 100 are as follows:
referring to fig. 4, before the electric shovel 100 performs the swing operation, the output cable 135 between the trailer 131 and the upper vehicle 111 is substantially parallel to the traveling direction of the shovel device 110. Referring to fig. 5, when the electric excavator 100 performs a swing operation, the upper vehicle 111 rotates relative to the lower vehicle 113, the output cable 135 swings under the driving of the upper vehicle 111, and the entire output cable 135 gradually deviates from the advancing direction and forms an angle with the advancing direction. The output cable 135 is connected to the wiring mechanism 112 through the wire outlet mechanism 133, the wire outlet mechanism 133 and the wiring mechanism 112 can flexibly rotate, and the wire outlet mechanism 133 and the wiring mechanism 112 can change directions along with the output cable 135 when the output cable 135 swings, so that abrasion among the output cable 135, the trailer 131 and the boarding 111 is reduced, the service life of the cable is prolonged, and the reliability of the device is improved. Meanwhile, the wire outlet mechanism 133 is provided with a spring 136, and once cable redundancy occurs between the trailer 131 and the winding 111, the wire outlet mechanism 133 can automatically rotate the hub 134 in the reverse direction by virtue of the spring 136 to tighten the output cable 135, so that the output cable 135 is prevented from being worn by other objects. In addition, the cable trolley 140 is used as a power supply source, so that power can be continuously supplied when the trailer 131 moves forwards along with the excavator device 110, the electric excavator 100 can perform a wider range of work and a longer time of work, and the overall work efficiency is improved.
The electric excavator 100 is provided with the wire outlet mechanism 133 and the wire connecting mechanism 112 which rotate flexibly, and the wire outlet mechanism 133 can automatically tighten the output cable 135, so that the abrasion of the output cable 135 can be effectively reduced, and the working reliability and the safety of the electric excavator 100 are improved. Meanwhile, the cable slide wire 140 is used as a power supply source to continuously supply power, so that the endurance time of the electric excavator 100 is effectively prolonged, and the working efficiency of the excavator is improved.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. An electric excavator, comprising:
the excavator device comprises an upper vehicle and a lower vehicle, and the upper vehicle is rotatably connected with the lower vehicle;
trailer power supply unit, trailer power supply unit includes trailer, outgoing line mechanism and output cable, the trailer connect in get off the car, outgoing line mechanism rotate connect in the trailer, output cable set up in the trailer, output cable passes through outgoing line mechanism inserts get on the bus in order to the excavator device power supply, work as get on the bus for it rotates and leads to when the output cable swings to get off the bus, outgoing line mechanism follows output cable is together relative the trailer rotates.
2. The electric excavator of claim 1 wherein the wire exit mechanism is capable of 360 ° rotation relative to the trailer.
3. The electric excavator of claim 1 wherein the wire-out mechanism comprises a support member and a hub, the support member is rotatably connected to the trailer about a first rotation axis, the hub is rotatably connected to the support member about a second rotation axis, the output cable is wound around the hub, and the first rotation axis and the second rotation axis form an included angle therebetween.
4. The electric excavator of claim 3 wherein the wire payout mechanism comprises a clock spring connected between the hub and the support, the clock spring being adapted to have a tendency to retract at all times as the output cable is pulled out of the hub.
5. The electric excavator of claim 1 wherein the excavator apparatus includes a wiring mechanism, the wiring mechanism being pivotally connected to the upper cart, the output cable being routed to the wiring mechanism through the outlet mechanism to provide power to the excavator apparatus, the wiring mechanism being pivotal with the output cable relative to the upper cart when the rotation of the upper cart relative to the lower cart causes the output cable to swing.
6. The electric excavator of claim 5 wherein the wire connection mechanism is capable of 360 ° rotation relative to the upper truck.
7. The electric excavator as claimed in claim 5, wherein the wire connection mechanism includes a wire connection pipe and a lock member provided at an end of the wire connection pipe, the end of the wire connection pipe remote from the lock member being rotatably attached to the upper vehicle, the lock member being adapted to lock the output cable.
8. The electric excavator of claim 7 wherein the terminal pipe is provided with a seal for sealing a gap between the output cable and an inner wall of the terminal pipe.
9. The electric excavator of claim 7 wherein the inner wall of the wire barrel is provided with a pad for preventing the output cable from being worn in the wire barrel.
10. The electric excavator of claim 1 wherein the trailer power supply includes a cable trolley including a slide rail, a cable carrier slidably connected to the slide rail, and a flat cable connected to the cable carrier, the flat cable being capable of being lengthened or shortened when the cable carrier slides relative to the slide rail;
the flat cable is electrically connected to a power source, and the output cable is electrically connected to the flat cable so that the trailer power supply device can supply power to the excavator device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010185002.8A CN111255005A (en) | 2020-03-17 | 2020-03-17 | Electric excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010185002.8A CN111255005A (en) | 2020-03-17 | 2020-03-17 | Electric excavator |
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| CN111255005A true CN111255005A (en) | 2020-06-09 |
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|---|---|---|---|
| CN202010185002.8A Pending CN111255005A (en) | 2020-03-17 | 2020-03-17 | Electric excavator |
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| CN105958420A (en) * | 2016-05-12 | 2016-09-21 | 兰州理工大学 | Cable automatic collecting and releasing system of pure electric hydraulic excavator |
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| CN211816569U (en) * | 2020-03-17 | 2020-10-30 | 三一重机有限公司 | Electric excavator |
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