CN110206794A - Hydraulic spanner and engineering truck - Google Patents
Hydraulic spanner and engineering truck Download PDFInfo
- Publication number
- CN110206794A CN110206794A CN201910547930.1A CN201910547930A CN110206794A CN 110206794 A CN110206794 A CN 110206794A CN 201910547930 A CN201910547930 A CN 201910547930A CN 110206794 A CN110206794 A CN 110206794A
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- China
- Prior art keywords
- hydraulic
- fluid port
- control valve
- directional control
- hydraulic fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/087—Control strategy, e.g. with block diagram
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The present invention provides a kind of hydraulic spanner and engineering truck, is related to technical field of hydraulic equipment, hydraulic spanner includes oil pump, hydraulic motor, pumping plant and hydraulic torque spanner；The oil pump, the hydraulic motor, the pumping plant and the hydraulic torque spanner are sequentially connected, and the oil pump is by low-voltage direct electric drive.Pumping plant is driven using hydraulic motor, cancel the motor on pumping plant, suitable for high-voltage electricity cannot be used or without the special occasions of high-voltage electricity, the use scope of hydraulic spanner is greatly widened, without taking high-cost pressurized cylinder or super-pressure pump technology path, but common mesolow oil pump is used to provide oil sources, cost is lower, it operates safer, is also easier to implement.
Description
Technical field
The present invention relates to technical field of hydraulic equipment, have this hydraulic more particularly, to a kind of hydraulic spanner, and one kind
The engineering truck of spanner.
Background technique
When engineering truck repair apparatus, needs to use hydraulic spanner and unscrew and tighten bolt.In some special occasions, for
Security consideration cannot use 220V or 380V high voltage power supply when repair apparatus, can only use 24V and following low-voltage DC.
Maximum pressure is belonged to extra-high tension unit, needs to be driven using motor up to 70MPa when hydraulic spanner operates.
However motor needs the high voltage power supply of 220V or 380V to drive, 24V and following low-voltage DC are difficult to that hydraulic spanner is driven to work.
To solve the above problems, the prior art is generally adopted when this special occasions of low-voltage DC uses hydraulic spanner
Hydraulic spanner is directly driven with pressurized cylinder or super-pressure pump, but enforcement difficulty is larger and higher cost.
Summary of the invention
The purpose of the present invention is to provide a kind of hydraulic spanners, to solve hydraulic spanner in the prior art in low-tension current
Enforcement difficulty big and at high cost technical problem when occasion uses.
Hydraulic spanner provided by the invention, including oil pump, hydraulic motor, pumping plant and hydraulic torque spanner；
The oil pump, the hydraulic motor, the pumping plant and the hydraulic torque spanner are sequentially connected, and the oil pump by
Low-voltage direct electric drive.
Further, the oil pump is connect with the hydraulic motor by quick coupling.
Further, the hydraulic spanner further includes that the first pilot operated directional control valve, the second pilot operated directional control valve and the first electromagnetism change
To valve；
The pumping plant is connect with the first cavity of the hydraulic torque spanner by the first pilot operated directional control valve；The pumping plant with
Second cavity of the hydraulic torque spanner is connected by the second pilot operated directional control valve；
First solenoid directional control valve is by low-voltage direct electric drive, and first solenoid directional control valve is for driving the first liquid
Control reversal valve and the commutation of the second pilot operated directional control valve.
Further, first pilot operated directional control valve includes the first hydraulic fluid port, the second hydraulic fluid port, third hydraulic fluid port and the first commutation oil
Mouthful；Second pilot operated directional control valve includes the 4th hydraulic fluid port, the 5th hydraulic fluid port, the 6th hydraulic fluid port and the second commutation hydraulic fluid port；First electricity
Magnetic reversal valve includes the 7th hydraulic fluid port, the 8th hydraulic fluid port and the 9th hydraulic fluid port；
The outlet of the pumping plant is connect with the first hydraulic fluid port, the 4th hydraulic fluid port and the 8th hydraulic fluid port respectively, second hydraulic fluid port and institute
The first cavity connection of hydraulic torque spanner is stated, the 5th hydraulic fluid port is connect with the second cavity of the hydraulic torque spanner；
The hydraulic spanner further includes fuel tank, and the fuel tank is connect with the entrance of the pumping plant, the third hydraulic fluid port, described
6th hydraulic fluid port and the 7th hydraulic fluid port are connect with the fuel tank respectively, and the third hydraulic fluid port, the 6th hydraulic fluid port and described
Seven hydraulic fluid ports are interconnected；
The first commutation hydraulic fluid port connection and the 9th hydraulic fluid port, the second commutation hydraulic fluid port and second hydraulic fluid port connect
It connects.
Further, it is equipped between first pilot operated directional control valve and second pilot operated directional control valve and the pumping plant unidirectional
Valve.
Further, between the check valve and the pumping plant be equipped with the first overflow valve, second pilot operated directional control valve with
The second overflow valve is equipped between the hydraulic torque spanner.
The object of the invention is also to provide a kind of engineering trucks, including hydraulic spanner provided by the invention.
Further, the engineering truck further includes the second solenoid directional control valve and third solenoid directional control valve, second electricity
Magnetic reversal valve and the third solenoid directional control valve are by low-voltage direct electric drive；
The oil pump, second solenoid directional control valve, the third solenoid directional control valve and the hydraulic motor are sequentially connected,
And the oil outlet of second solenoid directional control valve is connect with cantilever crane, the oil outlet of the third solenoid directional control valve is connect with supporting leg.
Further, filter is equipped between the oil pump and second solenoid directional control valve.
Further, third overflow valve is equipped between the filter and second solenoid directional control valve.
Hydraulic spanner provided by the invention, including oil pump, hydraulic motor, pumping plant and hydraulic torque spanner；The oil pump, institute
It states hydraulic motor, the pumping plant and the hydraulic torque spanner to be sequentially connected, and the oil pump is by low-voltage direct electric drive.Using
Hydraulic motor drives pumping plant, cancels the motor on pumping plant, suitable for high-voltage electricity cannot be used or without the special occasions of high-voltage electricity,
The use scope for greatly having widened hydraulic spanner, without taking high-cost pressurized cylinder or super-pressure pump technology path, but
Oil sources is provided using common mesolow oil pump, cost is lower, and operation is safer, is also easier to implement.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the schematic diagram of hydraulic spanner provided in an embodiment of the present invention；
Fig. 2 is the partial schematic diagram of Fig. 1.
Icon: 1- oil pump；2- hydraulic motor；3- pumping plant；4- hydraulic torque spanner；5- quick coupling；6- first
Pilot operated directional control valve；The first hydraulic fluid port of 61-；The second hydraulic fluid port of 62-；63- third hydraulic fluid port；The commutation hydraulic fluid port of 64- first；The second liquid of 7-
Control reversal valve；The commutation hydraulic fluid port of 71- second；The 5th hydraulic fluid port of 72-；The 6th hydraulic fluid port of 73-；The 4th hydraulic fluid port of 74-；The first electromagnetism of 8-
Reversal valve；The 7th hydraulic fluid port of 81-；The 8th hydraulic fluid port of 82-；The 9th hydraulic fluid port of 83-；9- check valve；The first overflow valve of 10-；11-
Two overflow valves；The second solenoid directional control valve of 12-；The first oil inlet of 121-；The first oil outlet of 122-；The first oil return opening of 123-；
The first actuator port of 124-；13- third solenoid directional control valve；The second oil inlet of 131-；The second oil outlet of 132-；133-
Two oil return openings；The second actuator port of 134-；14- filter；15- third overflow valve.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that such as occur term " center ", "upper", "lower", "left", "right",
"vertical", "horizontal", "inner", "outside" etc., indicated by orientation or positional relationship be orientation based on the figure or position
Relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have
There is specific orientation, be constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, as occurred
Term " first ", is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance " second ".Wherein, term
" first position " and " second position " is two different positions.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
The present invention provides a kind of hydraulic spanner and engineering trucks, and multiple embodiments are given below to liquid provided by the invention
Pressure spanner and engineering truck are described in detail.
Embodiment 1
Hydraulic spanner provided in this embodiment, as shown in Figure 1 to Figure 2, including oil pump 1, hydraulic motor 2, pumping plant 3 and hydraulic
Torque spanner 4；Oil pump 1, hydraulic motor 2, pumping plant 3 and hydraulic torque spanner 4 are sequentially connected, and oil pump 1 is driven by low-voltage DC
It is dynamic.
The hydraulic spanner provides power source by common mesolow oil pump 1, gives hydraulic spanner hydraulic system fuel feeding.Oil pump 1 supplies
Oil give hydraulic motor 2, hydraulic motor 2 drive pumping plant 3, pumping plant 3 for high pressure oil to hydraulic torque spanner 4, thus with hydrodynamic forces
Bolt is tightened or unclamped to square spanner 4, achievees the purpose that repair apparatus.
Hydraulic spanner provided in this embodiment drives pumping plant 3 using hydraulic motor 2, cancels the motor on pumping plant 3, is applicable in
In cannot use high-voltage electricity or without the special occasions of high-voltage electricity, the use scope of hydraulic spanner greatly widened, without adopting
High-cost pressurized cylinder or super-pressure pump technology path are taken, but common mesolow oil pump 1 is used to provide oil sources, cost is lower,
It operates safer, is also easier to implement.
Oil pump 1 can also be any suitable by other 24V or less by 24V low-voltage direct electric drive, oil pump 1 in the present embodiment
The low-voltage direct electric drive of voltage.
Further, oil pump 1 is connect with hydraulic motor 2 by quick coupling 5.Specifically, oil pump 1 and hydraulic motor 2 it
Between by piping connection, in the pipeline joint on the pipeline and hydraulic motor 2 on oil pump 1, can use the company of quick coupling 5
It connects, can be improved the convenience and efficiency of connection.
Further, hydraulic spanner further includes the first pilot operated directional control valve 6, the second pilot operated directional control valve 7 and the first electromagnetic switch
Valve 8；Pumping plant 3 is connect with the first cavity of hydraulic torque spanner 4 by the first pilot operated directional control valve 6；Pumping plant 3 and hydraulic torque spanner
4 the second cavity is connected by the second pilot operated directional control valve 7；First solenoid directional control valve 8 is by low-voltage direct electric drive, and the first electromagnetism
Reversal valve 8 is for driving the first pilot operated directional control valve 6 and the commutation of the second pilot operated directional control valve 7.
Wherein, the first solenoid directional control valve 8 is able to drive the first pilot operated directional control valve 6 and the commutation of the second pilot operated directional control valve 7, so that
Hydraulic oil flows into the first cavity or the second cavity of hydraulic torque spanner 4.First solenoid directional control valve 8 is driven by low-voltage DC
It is dynamic, so that hydraulic spanner is can be applied to that high-voltage electricity or the special occasions without high-voltage electricity cannot be used.
For example, when the first pilot operated directional control valve 6 and the second pilot operated directional control valve 7 are in the first operating position (right position), pumping plant 3
Oil outlet is connected to the first cavity of hydraulic torque spanner 4 by the first pilot operated directional control valve 6, the oil outlet and hydraulic coupling of pumping plant 3
Second cavity of square spanner 4 is not connected to, and hydraulic oil can flow into the first cavity；Under the control of solenoid directional control valve, the first liquid
It controls reversal valve 6 and the second pilot operated directional control valve 7 changes to the second operating position (left position), oil outlet and the hydraulic torque of pumping plant 3 are pulled
First cavity of hand 4 is not connected to, and the oil outlet of pumping plant 3 and the second cavity of hydraulic torque spanner 4 pass through the second pilot operated directional control valve 7
Connection, hydraulic oil can flow into the second cavity, tighten or unclamp bolt to realize.
Specifically, the first pilot operated directional control valve 6 includes the first hydraulic fluid port 61, the second hydraulic fluid port 62, third hydraulic fluid port 63 and the first commutation
Hydraulic fluid port 64；Second pilot operated directional control valve 7 includes the 4th hydraulic fluid port 74, the 5th hydraulic fluid port 72, the 6th hydraulic fluid port 73 and the second commutation hydraulic fluid port 71；The
One solenoid directional control valve 8 includes the 7th hydraulic fluid port 81, the 8th hydraulic fluid port 82 and the 9th hydraulic fluid port 83；The outlet of pumping plant 3 respectively with the first hydraulic fluid port
61, the 4th hydraulic fluid port 74 and the connection of the 8th hydraulic fluid port 82, the second hydraulic fluid port 62 are connect with the first cavity of hydraulic torque spanner 4, the 5th oil
Mouth 72 is connect with the second cavity of hydraulic torque spanner 4；Hydraulic spanner further includes fuel tank, and fuel tank is connect with the entrance of pumping plant 3, the
Three hydraulic fluid ports 63, the 6th hydraulic fluid port 73 and the 7th hydraulic fluid port 81 are connect with fuel tank respectively, and third hydraulic fluid port 63, the 6th hydraulic fluid port 73 and the 7th oil
Mouth 81 is interconnected；First commutation hydraulic fluid port 64 connection and the 9th hydraulic fluid port 83, the second commutation hydraulic fluid port 71 are connect with the second hydraulic fluid port 62.
Wherein, when pressing the button on 2 handle of hydraulic motor, controller controls the first solenoid directional control valve 8 must be electric, hydraulic
Oil flows into hydraulic motor 2 by oil pump 1, and hydraulic motor 2 drives pumping plant 3, and the hydraulic oil in fuel tank is pumped into the 8th with high pressure by pumping plant 3
Hydraulic fluid port 82, since the 8th hydraulic fluid port 82 at this time is not connected to the 9th hydraulic fluid port 83, the 7th hydraulic fluid port 81 is connected to the 9th hydraulic fluid port 83, pressure oil
It cannot flow into the first commutation hydraulic fluid port 64, be connected to the first hydraulic fluid port 61 with the second hydraulic fluid port 62, after pressure oil flows into the first hydraulic fluid port 61
It is flowed out from the second hydraulic fluid port 62, the first cavity of hydraulic torque spanner 4 is entered with rear portion, another part flows into the second commutation oil
Mouth 71, is connected to the 5th hydraulic fluid port 72 with the 6th hydraulic fluid port 73；The intracorporal hydraulic oil of second chamber passes through the 5th hydraulic fluid port 72 and the 6th hydraulic fluid port
73 outflows, flow back into fuel tank, and pressure oil flows into the first cavity at this time, and the intracorporal hydraulic oil of the second chamber flows back to fuel tank, hydraulic spanner
Advance, tightens bolt.
When unclamp 2 handle of hydraulic motor on button when, controller control 8 power loss of the first solenoid directional control valve, hydraulic oil by
Oil pump 1 flows into hydraulic motor 2, and hydraulic motor 2 drives pumping plant 3, and the hydraulic oil in fuel tank is pumped into the 8th hydraulic fluid port with low pressure by pumping plant 3
82, since the 8th hydraulic fluid port 82 at this time is connected to the 9th hydraulic fluid port 83, pressure oil is flowed into the first commutation hydraulic fluid port 64, drives the first hydraulic control
Reversal valve 6 commutates, and is connected to the second hydraulic fluid port 62 with third hydraulic fluid port 63, and the intracorporal hydraulic oil part of the first chamber flows into the second hydraulic fluid port 62
Fuel tank is flow back by third hydraulic fluid port 63 afterwards, part flows into the second commutation hydraulic fluid port 71 but do not have pressure, therefore the second hydraulic control is changed
It is in left position to valve 7 to work, pressure oil flows into the second cavity, the intracorporal liquid of the first chamber by the 4th hydraulic fluid port 74 and the 5th hydraulic fluid port 72
Pressure oil flows back to fuel tank, and hydraulic spanner retracts, and unclamps bolt.
Wherein, the first solenoid directional control valve 8 can be worked by 24V low-voltage direct electric drive, can also be by the low pressure lower than 24V
DC powered work.
Further, check valve 9 is equipped between the first pilot operated directional control valve 6 and the second pilot operated directional control valve 7 and pumping plant 3, unidirectionally
Valve 9 limits pressure oil and is only capable of flowing to the first pilot operated directional control valve 6 and the second pilot operated directional control valve 7 by pumping plant 3, prevents hydraulic oil from flowing back to
Pumping plant 3 exports.
Further, the first overflow valve 10, the second pilot operated directional control valve 7 and hydraulic torque are equipped between check valve 9 and pumping plant 3
The second overflow valve 11 is equipped between spanner 4.First overflow valve 10 and the second overflow valve 11 play pressure stabilization function to hydraulic system, mention
High stability.
Hydraulic spanner provided in this embodiment, including oil pump 1, hydraulic motor 2, pumping plant 3 and hydraulic torque spanner 4；Oil pump
1, hydraulic motor 2, pumping plant 3 and hydraulic torque spanner 4 are sequentially connected, and oil pump 1 is by low-voltage direct electric drive.Using hydraulic motor
2 driving pumping plants 3, cancel the motor on pumping plant 3, suitable for that cannot use high-voltage electricity or without the special occasions of high-voltage electricity, greatly
The use scope of hydraulic spanner has been widened on ground, without taking high-cost pressurized cylinder or super-pressure pump technology path, but is used
Common mesolow oil pump 1 provides oil sources, and cost is lower, and operation is safer, is also easier to implement.
Embodiment 2
Engineering truck provided in this embodiment, the hydraulic spanner provided including embodiment 1.Using 2 transfer tube of hydraulic motor
Stand 3, the motor cancelled on pumping plant 3 is greatly widened suitable for that cannot use high-voltage electricity or without the special occasions of high-voltage electricity
The use scope of hydraulic spanner without taking high-cost pressurized cylinder or super-pressure pump technology path, but uses low in common
Pressure oil pump 1 provides oil sources, and cost is lower, and operation is safer, is also easier to implement.
Further, engineering truck further includes the second solenoid directional control valve 12 and third solenoid directional control valve 13, and the second electromagnetism changes
To valve 12 and third solenoid directional control valve 13 by low-voltage direct electric drive；Oil pump 1, the second solenoid directional control valve 12, third electromagnetism change
It is sequentially connected to valve 13 and hydraulic motor 2, and the oil outlet of the second solenoid directional control valve 12 is connect with cantilever crane, third solenoid directional control valve
13 oil outlet is connect with supporting leg.
Wherein, the second solenoid directional control valve 12 includes the first oil inlet 121, the first oil outlet 122,123 and of the first oil return opening
First actuator port 124, third solenoid directional control valve 13 include the second oil inlet 131, the second oil outlet 132, the second oil return opening 133
With the second actuator port 134.
The outlet of oil pump 1 is connect with the first oil inlet 121, and the first actuator port 124 is connect with the second oil inlet 131, the
One oil outlet 122 is connect with cantilever crane, and the second oil outlet 132 is connect with supporting leg, and the second actuator port 134 enters with hydraulic motor 2
Mouth connection, the outlet of hydraulic motor 2 is connect with the first oil return opening 123 and the second oil return opening 133.
When pressing or unclamping the button on motor handle, the first oil inlet 121 is connected to the first actuator port 124, the
One oil outlet 122 is connected to the first oil return opening 123, and the second oil inlet 131 is connected to the second actuator port 134, the second oil return opening
133 are connected to the second oil outlet 132.
Hydraulic oil is passed through the first oil inlet 121, the first actuator port 124, the second oil inlet 131 and the second work by oil pump 1
Make hydraulic fluid port 134 to flow into hydraulic motor 2, the oil return of hydraulic motor 2 flows back to fuel tank by the second oil return opening 133.
When the second solenoid directional control valve 12 must be electric, 1 fuel feeding of oil pump drives cantilever crane expansion or withdraws to cantilever crane；When third electricity
When magnetic reversal valve 13 obtains electric, 1 fuel feeding of oil pump drives supporting leg to stretch out or withdraw to supporting leg.
1 fuel feeding of oil pump is supplied to executing agencies such as supporting leg, the cantilever cranes of engineering truck, while to hydraulic spanner hydraulic system
Oil.This hydraulic spanner can be not only used for overhaul of the equipments in workshop, it can also be used to the open airs such as oil field, coal mine on engineering truck
Overhaul of the equipments, suitable for high-voltage electricity cannot be used or without the special occasions of high-voltage electricity, thus have significant economic benefit and
Social benefit.
Wherein, the first solenoid directional control valve 8, the second solenoid directional control valve 12 and third solenoid directional control valve 13 can be low by 24V
DC powered work is pressed, can also be worked by the low-voltage direct electric drive lower than 24V.
Further, filter 14 is equipped between oil pump 1 and the second solenoid directional control valve 12, filter 14 can filter hydraulic
Impurity in oil improves the stability of hydraulic system.
Further, third overflow valve 15, third overflow valve 15 are equipped between filter 14 and the second solenoid directional control valve 12
Pressure stabilization function can be played, stability is improved.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of hydraulic spanner, which is characterized in that including oil pump (1), hydraulic motor (2), pumping plant (3) and hydraulic torque spanner
(4)；
The oil pump (1), the hydraulic motor (2), the pumping plant (3) and the hydraulic torque spanner (4) are sequentially connected, and institute
Oil pump (1) is stated by low-voltage direct electric drive.
2. hydraulic spanner according to claim 1, which is characterized in that the oil pump (1) passes through with the hydraulic motor (2)
Quick coupling (5) connection.
3. hydraulic spanner according to claim 1, which is characterized in that the hydraulic spanner further includes the first pilot operated directional control valve
(6), the second pilot operated directional control valve (7) and the first solenoid directional control valve (8)；
The pumping plant (3) is connect with the first cavity of the hydraulic torque spanner (4) by the first pilot operated directional control valve (6)；It is described
Pumping plant (3) is connect with the second cavity of the hydraulic torque spanner (4) by the second pilot operated directional control valve (7)；
First solenoid directional control valve (8) is by low-voltage direct electric drive, and first solenoid directional control valve (8) is for driving first
Pilot operated directional control valve (6) and the second pilot operated directional control valve (7) commutation.
4. hydraulic spanner according to claim 3, which is characterized in that first pilot operated directional control valve (6) includes the first oil
Mouth (61), the second hydraulic fluid port (62), third hydraulic fluid port (63) and the first commutation hydraulic fluid port (64)；Second pilot operated directional control valve (7) includes
4th hydraulic fluid port (74), the 5th hydraulic fluid port (72), the 6th hydraulic fluid port (73) and the second commutation hydraulic fluid port (71)；First solenoid directional control valve
It (8) include the 7th hydraulic fluid port (81), the 8th hydraulic fluid port (82) and the 9th hydraulic fluid port (83)；
The outlet of the pumping plant (3) is connect with the first hydraulic fluid port (61), the 4th hydraulic fluid port (74) and the 8th hydraulic fluid port (82) respectively, and described
Two hydraulic fluid ports (62) are connect with the first cavity of the hydraulic torque spanner (4), the 5th hydraulic fluid port (72) and the hydraulic torque
Second cavity of spanner (4) connects；
The hydraulic spanner further includes fuel tank, and the fuel tank is connect with the entrance of the pumping plant (3), the third hydraulic fluid port (63),
6th hydraulic fluid port (73) and the 7th hydraulic fluid port (81) connect with the fuel tank respectively, and the third hydraulic fluid port (63), described
6th hydraulic fluid port (73) and the 7th hydraulic fluid port (81) are interconnected；
First commutation hydraulic fluid port (64) connection and the 9th hydraulic fluid port (83), second commutation hydraulic fluid port (71) and described second
Hydraulic fluid port (62) connection.
5. hydraulic spanner according to claim 3, which is characterized in that first pilot operated directional control valve (6) and described second
Check valve (9) are equipped between pilot operated directional control valve (7) and the pumping plant (3).
6. hydraulic spanner according to claim 5, which is characterized in that set between the check valve (9) and the pumping plant (3)
Have the first overflow valve (10), the second overflow valve is equipped between second pilot operated directional control valve (7) and the hydraulic torque spanner (4)
(11)。
7. a kind of engineering truck, which is characterized in that including hydraulic spanner of any of claims 1-6.
8. engineering truck according to claim 7, which is characterized in that the engineering truck further includes the second solenoid directional control valve
(12) and third solenoid directional control valve (13), second solenoid directional control valve (12) and the third solenoid directional control valve (13) are by low
Press DC powered；
The oil pump (1), second solenoid directional control valve (12), the third solenoid directional control valve (13) and the hydraulic motor
(2) it is sequentially connected, and the first oil outlet (122) of second solenoid directional control valve (12) is connect with cantilever crane, the third electromagnetism
The second oil outlet (132) of reversal valve is connect with supporting leg.
9. engineering truck according to claim 8, which is characterized in that the oil pump (1) and second solenoid directional control valve
(12) filter (14) are equipped between.
10. engineering truck according to claim 9, which is characterized in that the filter (14) is changed with second electromagnetism
Third overflow valve (15) are equipped between valve (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910547930.1A CN110206794B (en) | 2019-06-24 | 2019-06-24 | Hydraulic wrench and engineering vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910547930.1A CN110206794B (en) | 2019-06-24 | 2019-06-24 | Hydraulic wrench and engineering vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110206794A true CN110206794A (en) | 2019-09-06 |
| CN110206794B CN110206794B (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910547930.1A Active CN110206794B (en) | 2019-06-24 | 2019-06-24 | Hydraulic wrench and engineering vehicle |
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| CN (1) | CN110206794B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU479615A1 (en) * | 1973-10-02 | 1975-08-05 | Hydraulic Key for Threaded Assembly | |
| DE3202351A1 (en) * | 1982-01-26 | 1983-07-28 | Robert Bosch Gmbh, 7000 Stuttgart | HYDRAULIC SYSTEM |
| CN2923208Y (en) * | 2006-06-16 | 2007-07-18 | 重庆运达机电设备制造有限公司 | IC hydraulic screw-bolt spanner |
| CN102644573A (en) * | 2011-11-04 | 2012-08-22 | 陈中行 | Energy saving machine |
| CN202448078U (en) * | 2012-02-20 | 2012-09-26 | 重庆运达科技有限公司 | Internal combustion hydraulic bolt spanner for railway |
| CN104999261A (en) * | 2015-05-25 | 2015-10-28 | 江苏飞耀机械制造有限公司 | Automatic blade bolt assembling and disassembling device type bolt trolley |
| CN106159629A (en) * | 2015-03-30 | 2016-11-23 | 辽宁省送变电工程公司 | A kind of wire crimping connector dynamic Control platform |
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2019
- 2019-06-24 CN CN201910547930.1A patent/CN110206794B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU479615A1 (en) * | 1973-10-02 | 1975-08-05 | Hydraulic Key for Threaded Assembly | |
| DE3202351A1 (en) * | 1982-01-26 | 1983-07-28 | Robert Bosch Gmbh, 7000 Stuttgart | HYDRAULIC SYSTEM |
| CN2923208Y (en) * | 2006-06-16 | 2007-07-18 | 重庆运达机电设备制造有限公司 | IC hydraulic screw-bolt spanner |
| CN102644573A (en) * | 2011-11-04 | 2012-08-22 | 陈中行 | Energy saving machine |
| CN202448078U (en) * | 2012-02-20 | 2012-09-26 | 重庆运达科技有限公司 | Internal combustion hydraulic bolt spanner for railway |
| CN106159629A (en) * | 2015-03-30 | 2016-11-23 | 辽宁省送变电工程公司 | A kind of wire crimping connector dynamic Control platform |
| CN104999261A (en) * | 2015-05-25 | 2015-10-28 | 江苏飞耀机械制造有限公司 | Automatic blade bolt assembling and disassembling device type bolt trolley |
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| CN110206794B (en) | 2020-04-14 |
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