CN210797711U

CN210797711U - Excavator with double power systems

Info

Publication number: CN210797711U
Application number: CN201921385089.2U
Authority: CN
Inventors: 陈凤利; 陈叙超
Original assignee: Jiashan Xinqiang Steel Industry Co ltd
Current assignee: Jiashan Xinqiang Steel Industry Co ltd
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2020-06-19
Anticipated expiration: 2029-08-23

Abstract

The utility model discloses an use excavator that has dual power system relates to excavating equipment, and the technical scheme main points are: including the excavator body, including motor and diesel engine, the output shaft of motor and diesel engine is connected with the hydraulic pump respectively, two the hydraulic pump is parallelly connected and the intercommunication has same interlocking to switch the three-way valve, the output of interlocking switches the three-way valve and communicates in the distributing valve of excavator body, interlocking switches the three-way valve and is connected with controlling means, controlling means still couples and controls the motor. The utility model discloses an use the excavator that has dual power system, it uses energy-conserving relatively, pollutes and the noise is less and the flexibility is higher relatively.

Description

Excavator with double power systems

Technical Field

The utility model relates to an excavating equipment, more specifically says that it relates to an use has dual power system's excavator.

Background

At present, a common excavator is driven by a diesel engine, and the common excavator has the following problems in use:

1. the price of diesel oil rises and the diesel engine discharges relatively serious pollution;

2. in cold environment, the fire can not be ignited (the machine can not be started) due to easy occurrence of fire.

In order to solve the above problems, electric excavators are currently available on the market. Although the electric excavator is relatively energy-saving when in use, etc., it is affected by cables and has relatively poor flexibility, so a new solution is required to solve the problem.

SUMMERY OF THE UTILITY MODEL

The excavator with the double power systems is relatively energy-saving in use, relatively small in pollution and noise and high in flexibility.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides an use excavator that has dual power system, includes the excavator body, includes motor and diesel engine, the output shaft of motor and diesel engine is connected with the hydraulic pump respectively, two the hydraulic pump is parallelly connected and the intercommunication has same interlocking to switch over the three-way valve, the output of interlocking switches over the three-way valve communicates in the distributing valve of excavator body, interlocking switches over the three-way valve and is connected with controlling means, controlling means still couples and controls the motor.

By adopting the technical scheme, the utility model can switch on the hydraulic pump driven by the motor or the hydraulic pump driven by the diesel engine through the control device to operate the interlocking switching three-way valve to provide power for the excavator body; when the utility model moves (generally, long-distance movement), the utility model is driven by diesel oil, and is relatively flexible because the utility model is not limited by the power storage capacity of cables or the machine body; when the utility model discloses begin to do the excavation operation, it adopts the electric drive to energy-conserving relatively and pollution and noise are less relatively.

The utility model discloses further set up to: the interlocking switches three-way valve includes the tee bend valve body, the tee bend valve body includes two input valve ways and an output valve way that communicate each other, the input valve way is provided with shutoff device, shutoff device is coupled in controlling means.

Through adopting the technical scheme, the utility model discloses on-off control is done to the input valve way to usable controlling means operation shutoff device, with the decision the utility model discloses an adopt motor drive, still diesel engine drive.

The utility model discloses further set up to: the shutoff device comprises a fixed clamping seat fixed on the input valve channel and a movable clamping block connected to the input valve channel in a radial sliding manner, the fixed clamping seat and the movable clamping block are distributed along the radial direction of the input valve channel, the fixed clamping seat is provided with a clamping groove, the clamping groove faces one side of the movable clamping block and is of an opening structure and matched with the movable clamping block, the shutoff device further comprises a driving piece used for driving the movable clamping block to slide, and the driving piece is coupled to the control device.

By adopting the technical scheme, when the automatic opening and closing device is used, the control device controls the driving piece to drive the movable clamping block to slide so as to control the opening and closing of the input valve way.

The utility model discloses further set up to: the movable clamping block is inserted into the clamping groove when in a natural state, the driving piece is an electromagnet, the movable clamping block has ferromagnetism, and the driving piece is fixed outside the three-way valve body and is positioned on one side, away from the fixed clamping seat, of the movable clamping block.

By adopting the technical scheme, when the electromagnet is not electrified, the spring is in a natural state, the movable clamping block is inserted into the clamping groove, and the input valve way is closed; when the control device is electrified to the driving piece, namely the electromagnet, the electromagnet attracts the movable clamping block to move towards the driving piece, and the movable clamping block is separated from the clamping groove so as to open the input valve channel.

The utility model discloses further set up to: the control device comprises a PLC (programmable logic controller), the PLC is coupled with or internally provided with a relay KM, and a normally closed contact and a normally open contact of the relay KM are respectively connected in series with the two driving pieces.

By adopting the technical scheme, when the PLC is used, the PLC controls the power on and the power off of the coil of the relay so as to determine whether the normally open contact and the normally closed contact of the relay are conducted with the corresponding driving piece and determine the on-off of the corresponding input valve; simultaneously, because two driving pieces receive normally open, the normally closed control of same relay respectively, so the utility model discloses be in an input valve way all the time after the start and open, an input valve way closed interlocking state to the relative preferred of result of use.

The utility model discloses further set up to: the control device further comprises a frequency converter, wherein the frequency converter is coupled to the PLC controller, and the frequency converter is coupled to the motor.

By adopting the technical scheme, the utility model discloses can be through the converter to the motor speed governing to the result of use is better relatively.

The utility model discloses further set up to: the cable guide arm is transversely rotatably connected to the excavator body, one end of the cable guide arm is rotatably connected to the excavator body, the other end of the cable guide arm extends out of the excavator body, and a cable of the motor is fixed to the cable guide arm and drops from the free end of the cable guide arm.

By adopting the technical scheme, the electric motor of the utility model is supplied with power by a mode of externally connecting with a power grid; at the moment, the possibility that the external cable of the motor is wound on the machine body can be reduced due to the cable guide arm, so that the using effect is better.

The utility model discloses further set up to: the cable guide arm extends that the one end outside is hung and is equipped with the stay cord, the stay cord is kept away from the one end of cable guide arm and is fixed with the constraint net, the cable that the constraint net cladding motor is the column and the last port is the slope, the stay cord is kept away from the one end of cable guide arm and is fixed in the slope upper end of constraint net.

Through adopting above-mentioned technical scheme, being kept away from fuselage (excavator body) side pulling when the cable relatively by the orientation, the constraint net is because of upper end one side atress, and its deformation tightens up to cladding firmly on the cable, a part pulling force that the cable received this moment can be shared by the stay cord, thereby the cable is difficult for relatively more at the hookup location disconnection, thereby the result of use is better.

The utility model discloses further set up to: the binding net is a metal wire net, and the pull rope is a metal rope.

Through adopting above-mentioned technical scheme, the intensity of constraint net and stay cord is bigger to guarantee its result of use.

The utility model discloses further set up to: a movable power distribution cabinet is coupled with a cable of the motor and is separated from the excavator body.

Through adopting above-mentioned technical scheme, the use of switch board can effectively improve the power consumption protection level, improves the security and just conveniently opens and close the circuit relatively.

To sum up, the utility model discloses following beneficial effect has:

1. the electric hydraulic excavator is provided with the motor and the diesel engine which respectively drive the hydraulic pump, the two hydraulic pumps are connected in parallel and communicated with the same interlocking switching three-way valve, and the interlocking switching three-way valve is communicated with the distribution valve of the excavator body, so that the electric and diesel driving switching can be realized by controlling which hydraulic pump is communicated by the interlocking three-way valve; when the utility model moves (generally, long-distance movement), the utility model is driven by diesel oil, and is relatively flexible because the utility model is not limited by the power storage capacity of cables or the machine body; when the utility model starts to do the digging operation, the electric drive is adopted, thereby saving energy relatively and having relatively small pollution and noise;

2. the interlocking switches the three-way valve and is in the utility model discloses after the start, be in an input valve all the time and say and open, the state that another input valve says and close can be guaranteed the utility model discloses remain throughout by one among electric drive or the diesel drive to the result of use is better.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a block diagram of the present invention, which is mainly used to show the driving structure of the motor and the diesel engine;

FIG. 3 is a block diagram of the system of the present invention, which is mainly used to show the control structure of the control device;

fig. 4 is a schematic view of the overall structure of the interlocking switching three-way valve of the present invention;

fig. 5 is a schematic partial exploded view of fig. 4, mainly illustrating the structure of the shutdown device.

In the figure: 1. an electric motor; 2. a diesel engine; 3. a hydraulic pump; 4. interlocking and switching a three-way valve; 41. a three-way valve body; 42. an input valve way; 421. a guide groove; 422. a spring; 43. an output valve way; 44. a shut-off device; 441. fixing the card holder; 442. a movable clamping block; 443. a card slot; 45. a drive member; 5. a control device; 51. a PLC controller; 52. a frequency converter; 6. an excavator body; 7. a cable guide arm; 81. pulling a rope; 82. a restraining net; 9. switch board.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

The excavator with the double power systems, referring to fig. 1, 2 and 3, comprises an excavator body 6, the excavator body 6 refers to a complete excavator with a power system of a front stage of a distributing valve removed, and the power system is replaced by: the system comprises a motor 1 and a diesel engine 2, wherein output shafts of the motor 1 and the diesel engine 2 are coaxially fixed on an input shaft of a hydraulic pump 3 through couplings respectively. The output intercommunication of two hydraulic pumps 3 has same interlocking to switch three-way valve 4, and interlocking switches three-way valve 4 and has two inputs and an output, and its input communicates two hydraulic pumps 3, and its output communicates in the valves of excavator body 6, for example: a distribution valve for driving a traveling system, a boom system, etc. of the excavator. The interlock switching three-way valve 4 is connected to a control device 5 for controlling the same, and the control device 5 is attachable to the cab of the excavator body 6 for user operation.

When in use, a user can switch between the motor 1 and the diesel engine by operating the interlocking switching three-way valve 4 through the control device 5 to conduct the corresponding hydraulic pump 3, so that the utility model is called as electricity and diesel oil dual-drive equipment; when the utility model moves (generally, long-distance movement), the utility model is driven by diesel oil, and is relatively flexible because the utility model is not limited by the power storage capacity of cables or the machine body; when the utility model discloses begin to do the excavation operation, it adopts the electric drive to energy-conserving relatively and pollution and noise are less relatively.

Referring to fig. 3 and 4, the interlock switching three-way valve 4 includes a three-way valve body 41, the three-way valve body 41 includes two input valve passages 42 and one output valve passage 43 communicated with each other, a shut-off device 44 is provided in the input valve passage 42, and the shut-off device 44 is coupled to the control device 5. In use, the input valve way 42 is controlled to be opened or closed by the shut-off device 44.

The input valve passage 42 and the output valve passage 43 are rectangular in end view, and the utility model discloses a width direction or length direction of its rectangle are expressed with radial to the convenience of description.

Referring to fig. 4 and 5, the shut-off device 44 includes a fixed clamping seat 441 and a movable clamping block 442, which are distributed along the radial direction of the valve way, wherein the fixed clamping seat 441 is fixed on the inner wall of the input valve way 42, a clamping groove 443 is formed on the fixed clamping seat 441, and one side of the clamping groove 443, which faces the movable clamping block 442, is in an open structure.

Two molding plates are fixed on the opposite sides of the fixed clamping seat 441 in the input valve way 42, a guide groove 421 is formed between the two molding plates, and one side of the guide groove 421 facing the fixed clamping seat 441 is of an opening structure; the movable latch 442 is engaged with and slidably connected to the guiding groove 421. A spring 422 is fixed on one side of the movable fixture block 442, which is far away from the fixed fixture block 441, and the length of the spring 422 is parallel to the sliding direction of the movable fixture block 442; when the spring 422 is in the natural state, the movable latch 442 is engaged with the latch 443.

Two driving parts 45 are fixed outside the three-way valve body 41 and used for driving the two movable clamping blocks 442 to move correspondingly, and the driving part 45 is an electromagnet and is located on one side of the movable clamping block 442 departing from the fixed clamping block 441. When the driving member 45 (electromagnet) is energized, it attracts the movable latch 442 toward it to disengage from the latching slot 443 to open the corresponding input valve 42. The movable latch 442 is made of ferromagnetic material, such as: made of ferrous alloy to ensure that it can be moved by the electromagnet.

Referring to fig. 3 and 5, the control device 5 includes a PLC controller 51, the PLC controller 51 is coupled with a relay KM (if the PLC controller 51 is selected to be configured with a relay, the relay KM does not need to be coupled additionally), a coil of the relay KM is coupled with the PLC controller 51, and a normally closed contact and a normally open contact are respectively connected in series with the two driving members 45 to form an interlocking structure, so as to ensure the use effect and the safety.

When the PLC controller 51 turns on the coil of the relay KM, the normally closed contact thereof is opened, and one driving member 45 connected in series therewith is de-energized, the corresponding movable latching block 442 is inserted into the latching slot 443; when the normally open contact is closed, the driving element 45 connected in series with the normally open contact is powered on, and the corresponding movable clamping block 442 is separated from the clamping groove 443; when the PLC controller 51 does not turn on the coil of the relay KM, the opposite is true; to sum up, the utility model discloses keep an input valve way 42 to open all the time after the start, the condition that an input valve way 42 was closed forms the interlocking to guarantee the result of use.

Referring to fig. 3, the control device 5 further includes a frequency converter 52, the frequency converter 52 is connected to the PLC controller 51 through a serial bus, and the motor 1 is further connected to the frequency converter 52 through a wire, so that a user can adjust the rotation speed of the motor 1 through the PLC controller 51 and the frequency converter 52 when using the device, thereby achieving a better use effect.

Referring to fig. 1, the electric motor 1 of the present invention is preferably connected to the grid of the construction site, since the energy storage of the onboard battery is limited. Therefore, the cable guide arm 7 is arranged at the upper part of the tail part of the excavator body 6, the cable guide arm 7 is integrally in a long strip-shaped frame structure, one end of the cable guide arm is fixedly provided with a rotating shaft and is transversely and rotatably connected to the excavator body 6 through the rotating shaft, and the other end of the cable guide arm extends out of the tail part of the excavator body 6. The cables of the electric motor 1 are fixed by bundling or threading a plurality of rings fixed to the cable guide arm 7, and the cables drop at the free end (outward end) of the cable guide arm 7.

The arrangement of the cable guide arm 7 can reduce the probability of winding the cable and the machine body, and because the cable guide arm can transversely rotate, the cable guide arm does not excessively obstruct the change of the direction of the cable relative to the machine body, and the like, so that the using effect is better.

Referring to fig. 1, a pull cord 81 is hung on the end of the cable guide arm 7 extending outward, a binding net 82 is fixed to the end of the pull cord 81 remote from the cable guide arm 7, and the binding net 82 is columnar and covers the cable hanging from the free end of the cable guide arm 7. The upper end of the columnar structure formed by the binding net 82 is inclined, and one end of the pulling rope 81 away from the cable guide arm 7 is fixed to the upper end of the binding net 82 which is inclined upwards.

When the cable is pulled relatively far away from the fuselage side, the deformation of the binding net 82 is tightened up due to the stress on one side of the upper end of the binding net so as to be firmly coated on the cable, and a part of pulling force applied to the cable can be shared by the pull rope 81, so that the cable is relatively less prone to being disconnected at the connection position, and the using effect is better.

Preferably, the pulling rope 81 and the binding net 82 are woven by using metal filaments treated with rust prevention.

Referring to fig. 1, the utility model discloses still include switch board 9, motor 1 is coupled in switch board 9 through the cable, rethread switch board 9 and construction place's electric wire netting intercommunication. The power distribution cabinet 9 is detached from the excavator body 6 and is placed near the excavator body 6 when in use. The use of switch board 9 can effectively improve the power consumption protection level, improves the security and just conveniently opens and close the circuit relatively. A leakage protector is installed in the power distribution cabinet 9 to further enhance the safety.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an use excavator that has dual-power system, includes excavator body (6), its characterized in that: including motor (1) and diesel engine (2), the output shaft of motor (1) and diesel engine (2) is connected with hydraulic pump (3) respectively, two hydraulic pump (3) are parallelly connected and the intercommunication has same interlocking to switch over three-way valve (4), the output that interlocking switches over three-way valve (4) communicates in the distribution valve of excavator body (6), interlocking switches over three-way valve (4) and is connected with controlling means (5), controlling means (5) still couple and control motor (1).

2. The excavator with dual power systems as set forth in claim 1, wherein: the interlocking switching three-way valve (4) comprises a three-way valve body (41), the three-way valve body (41) comprises two input valve passages (42) and one output valve passage (43) which are communicated with each other, the input valve passages (42) are provided with shutoff devices (44), and the shutoff devices (44) are coupled to a control device (5).

3. The excavator with dual power systems as set forth in claim 2, wherein: the shutoff device (44) comprises a fixed clamping seat (441) fixed on the input valve way (42) and a movable clamping block (442) connected to the input valve way (42) in a radial sliding manner, the fixed clamping seat (441) and the movable clamping block (442) are distributed along the radial direction of the input valve way (42), the fixed clamping seat (441) is provided with a clamping groove (443), one side, facing the movable clamping block (442), of the clamping groove (443) is of an opening structure and is matched with the clamping groove, the shutoff device (44) further comprises a driving piece (45) used for driving the movable clamping block (442) to slide, and the driving piece (45) is coupled to the control device (5).

4. The excavator with dual power systems as set forth in claim 3, wherein: the novel three-way valve is characterized in that a guide groove (421) is formed in the input valve way (42), the movable clamping block (442) is connected to the guide groove (421) in a sliding mode, a spring (422) is arranged at one end, deviating from the fixed clamping seat (441), of the movable clamping block (442), the movable clamping block (442) is inserted into the clamping groove (443) in a natural state of the spring (422), the driving piece (45) is an electromagnet, the movable clamping block (442) has ferromagnetism, and the driving piece (45) is fixed outside the three-way valve body (41) and located on one side, deviating from the fixed clamping seat (441), of the movable clamping block.

5. The excavator with dual power systems as set forth in claim 3, wherein: the control device (5) comprises a PLC (51), the PLC (51) is coupled with or internally provided with a relay KM, and a normally closed contact and a normally open contact of the relay KM are respectively connected in series with the two driving pieces (45).

6. The excavator with dual power systems as set forth in claim 5, wherein: the control device (5) further comprises a frequency converter (52), the frequency converter (52) being coupled to the PLC controller (51), the frequency converter (52) being coupled to the motor (1).

7. The excavator with dual power systems as set forth in claim 1, wherein: the cable guide arm (7) is transversely and rotatably connected to the excavator body (6), one end of the cable guide arm (7) is rotatably connected to the excavator body (6), the other end of the cable guide arm extends out of the excavator body (6), and a cable of the motor (1) is fixed to the cable guide arm (7) and drops from the free end of the cable guide arm (7).

8. The excavator with dual power systems as set forth in claim 7, wherein: the cable guide arm (7) extends and is equipped with stay cord (81) in the one end of outside hanging, stay cord (81) are kept away from the one end of cable guide arm (7) and are fixed with constraint net (82), the cable that constraint net (82) cladding motor (1) is the column and the up end is the slope, the one end that cable guide arm (7) were kept away from in stay cord (81) is fixed in the slope upper end of constraint net (82).

9. The excavator with dual power systems as set forth in claim 8, wherein: the binding net (82) is a metal wire net, and the pull rope (81) is a metal rope.

10. The excavator with dual power systems as set forth in claim 8, wherein: a mobile power distribution cabinet (9) is coupled to the cable of the motor (1), and the mobile power distribution cabinet (9) is separated from the excavator body (6).