CN210461238U - Tandem hydraulic motor drive screw apparatus - Google Patents
Tandem hydraulic motor drive screw apparatus Download PDFInfo
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- CN210461238U CN210461238U CN201920562113.9U CN201920562113U CN210461238U CN 210461238 U CN210461238 U CN 210461238U CN 201920562113 U CN201920562113 U CN 201920562113U CN 210461238 U CN210461238 U CN 210461238U
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Abstract
The utility model discloses a series connection hydraulic motor drive screw rod equipment, including the drive unit, the shaft coupling is passed through to drive unit's one end and is connected with the screw rod, the other end of drive unit is connected with first hydraulic motor's one end, first hydraulic motor is connected with control circuit respectively through two hydraulic pressure pipelines, control circuit respectively with the oil pump, the oil tank switch-on, first hydraulic motor's the other end and second hydraulic motor's one end series connection, second hydraulic motor is connected with control circuit through two other hydraulic pressure pipelines, be equipped with between second hydraulic motor and the control circuit and can make the liquid flushing loop connection of oil circuit intercommunication or disconnection between second hydraulic motor and the control circuit. The utility model discloses an equipment can realize high-speed low moment of torsion and low-speed high moment of torsion simultaneously, and the processing ability of two equipment can be realized to an equipment. The same equipment can process different materials, and the investment of the equipment is reduced. Different materials are produced without the preparation work of another device, and the production efficiency is improved.
Description
Technical Field
The utility model relates to a series connection hydraulic motor drive screw rod equipment belongs to former technical field.
Background
The plasticizing unit of the injection molding machine is driven by a screw rod and is driven by hydraulic and electric. As shown in fig. 1, the screw 1 is driven to rotate by a first hydraulic motor 4 through a transmission unit 3 and a coupling 2, and the power of the first hydraulic motor 4 is from an oil pump 7. The conventional screw drive circuit is composed of an oil tank 8, an oil pump 7, a control circuit 6, a hydraulic pipe 5, a first hydraulic motor 4, and the like.
The first hydraulic motor 4 has a rotation speed of the oil pump flow rate divided by the motor displacement, and its output torque is the unit pressure torque of the motor multiplied by the oil pressure. The first hydraulic motor 4 is selected according to the characteristics of the material to be processed, once selected, the maximum rotation speed and the maximum torque to be supplied to the screw 1 are determined, and the application of a smaller rotation speed can be realized through the variation of the oil pump 7.
The traditional screw hydraulic motor has single driving maximum rotating speed and maximum torque, so that the types of materials which can be processed by the screw are single. The motor with large torque and large displacement is used, so that the torque can be very high, but the speed is low, and the production efficiency is low; the motor with low torque and small displacement is used, the rotating speed can be very high, but the torque is small, and high-viscosity materials cannot be processed.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: the problem of how to realize high-speed low moment of torsion and low-speed high moment of torsion simultaneously is solved.
In order to solve the technical problem, the utility model provides a series connection hydraulic motor drive screw rod equipment, including the drive unit, the one end of drive unit is passed through the shaft coupling and is connected with the screw rod, and the other end of drive unit is connected with first hydraulic motor's one end, and first hydraulic motor is connected with control circuit respectively through two hydraulic pressure pipelines, and control circuit is put through with oil pump, oil tank respectively, a serial communication port, first hydraulic motor's the other end and second hydraulic motor's one end series connection, second hydraulic motor is connected with control circuit through two other hydraulic pressure pipelines, is equipped with between second hydraulic motor and the control circuit and can make the oil circuit between second hydraulic motor and the control circuit intercommunication or the flushing circuit connection of disconnection.
Preferably, the flushing loop comprises flushing valves and control valves, two hydraulic pipelines connected with the second hydraulic motor are respectively connected with upper ports of cavities B of the two flushing valves, lower ports of the cavities B of the two flushing valves are respectively communicated with two hydraulic pipelines of the first hydraulic motor, lower ports of the cavities B of the two flushing valves are also communicated with two inlets of the control valves, one outlet of the control valve is respectively communicated with a port on one side of the cavity B of the two flushing valves, the other outlet of the control valve is respectively communicated with a port on one side of the cavity A of the two flushing valves, the cavities A of the two flushing valves and the A, B cavities of the two flushing valves are communicated with each other.
The utility model discloses an equipment can realize high-speed low moment of torsion and low-speed high moment of torsion simultaneously, and the range of application of equipment is wide, and the processing ability of two equipment can be realized to an equipment. The same equipment can process different materials, and the investment of the equipment is reduced. Different materials are produced without the preparation work of another device, and the production efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of a conventional progressive cavity hydraulic motor drive apparatus;
FIG. 2 is a schematic illustration of a first hydraulic motor and a second hydraulic motor in series;
FIG. 3 is a schematic view (one) of a tandem hydraulic motor driven screw apparatus;
fig. 4 is a schematic structural diagram (two) of a tandem hydraulic motor driven screw apparatus.
Detailed Description
In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
The utility model relates to a series connection hydraulic motor drive screw rod equipment, as shown in figure 3, as shown in figure 4, it includes drive unit 3, drive unit 3's one end is passed through shaft coupling 2 and is connected with screw rod 1, drive unit 3's the other end is connected with first hydraulic motor 4's one end, first hydraulic motor 4 is connected with control circuit 6 respectively through two hydraulic pressure pipelines 5, control circuit 6 respectively with oil pump 7, the switch-on of oil tank 8, first hydraulic motor 4's the other end and second hydraulic motor 9's one end series connection, second hydraulic motor 9 is connected with control circuit 6 through two other hydraulic pressure pipelines 5, it can be so that the oil circuit between second hydraulic motor 9 and the control circuit 6 communicates or the liquid flushing loop 10 of disconnection is connected to be equipped with between second hydraulic motor 9 and the control circuit 6.
The flushing loop 10 comprises flushing valves 11 and control valves 12, two hydraulic pipelines 5 connected with the second hydraulic motor 9 are respectively connected with upper ports of cavities B of the two flushing valves 11, lower ports of the cavities B of the two flushing valves 11 are respectively communicated with the two hydraulic pipelines 5 of the first hydraulic motor 4, lower ports of the cavities B of the two flushing valves 11 (namely a port P on a main oil line of one flushing valve 11 and a port T on a main oil line of the other flushing valve 11) are also communicated with two inlets of the control valve 12, an outlet of the control valve 12 is respectively communicated with a port on one side of the cavity B of the two flushing valves 11, the other outlet of the control valve 12 is respectively communicated with a port on one side of the cavity A of the two flushing valves 11, and ports between the cavities A of the two flushing valves 11 and A, B of the two flushing valves 11 are mutually communicated.
The driving of the screw 1 of the present invention is performed by two hydraulic motors (i.e. the first hydraulic motor 4 and the second hydraulic motor 9) connected in series, as shown in fig. 2:
high-pressure oil of the oil pump 7 passes through the control circuit 6, enters the first hydraulic motor 4 and drives the first hydraulic motor 4 to rotate; and simultaneously high-pressure oil enters the flushing loop 10.
In the low-speed and high-torque working state, as shown in fig. 3, high-pressure oil generated by the oil pump 7 enters the cavity a of the flushing valve 11 through the control circuit 6, one part of the oil in the cavity a directly enters the first hydraulic motor 4, and the other part of the oil enters the flushing circuit 10. At this time, the left side of the control valve 12 of the flushing circuit 10 can be operated, and the dotted line in fig. 3 is the control oil circuit, and as shown by the arrows in fig. 3, the control oil finally acts on the left end of the left flushing valve 11 and the right end of the right flushing valve 11, the spool of the left flushing valve 11 is pushed to the right end, and the spool of the right flushing valve 11 is pushed to the left end, as shown in the position shown in fig. 3. At this time, the main oil passage P → B and the main oil passage B → T of the flushing valve 11 are open, and the high-pressure oil flows into the second hydraulic motor 9 through the main oil passage P → B of the flushing valve 11, and the return oil of the second hydraulic motor 9 also flows back to the oil tank 8 through the main oil passage B → T of the flushing valve 11. The torque of the screw is now supplied by both the first hydraulic motor 4 and the second hydraulic motor 9, achieving a high torque, but the hydraulic oil is diverted to both motors, the rotational speed is low.
The working state of high speed and small torque is shown in fig. 4, and the working state of high speed and small torque is shown in the following diagram, high-pressure oil generated by the oil pump 7 enters the cavity a through the control circuit 6, one part of the oil in the cavity a directly enters the first hydraulic motor 4, and the other part of the oil enters the flushing circuit 10. At this time, the right side of the control valve 12 of the flushing circuit 10 can be operated, and the dotted line in fig. 4 is a control oil circuit, and as shown by arrows in fig. 4, the control oil finally acts on the right end of the left flushing valve 11 and the left end of the right flushing valve 11, the spool of the left flushing valve 11 is pushed to the left end, and the spool of the right flushing valve 11 is pushed to the right end, as shown in the position shown in fig. 4. At this time, the main oil passage P → B and the main oil passage B → T of the flushing valve 11 are cut off, and the high-pressure oil cannot enter the second hydraulic motor 9. At this time, the A, B cavities of the two flushing valves 11 are respectively communicated, the two oil ports of the second hydraulic motor 9 are communicated through the flushing valves 11, the communicated oil paths are shown in bold lines in fig. 4, and the second hydraulic motor 9 is in an idle state and rotates along with the first hydraulic motor 4 but does not provide any power. At this time, the torque of the screw is supplied by the first hydraulic motor 4 alone, and the torque is small, but the hydraulic oil is supplied to the first hydraulic motor 4 in its entirety, and the rotation speed is high.
Claims (2)
1. A series hydraulic motor screw driving device comprises a transmission unit (3), one end of the transmission unit (3) is connected with a screw (1) through a coupler (2), the other end of the transmission unit (3) is connected with one end of a first hydraulic motor (4), the first hydraulic motor (4) is respectively connected with a control loop (6) through two hydraulic pipelines (5), the control loop (6) is respectively communicated with an oil pump (7) and an oil tank (8), the hydraulic control system is characterized in that the other end of the first hydraulic motor (4) is connected with one end of the second hydraulic motor (9) in series, the second hydraulic motor (9) is connected with the control loop (6) through the other two hydraulic pipelines (5), and a flushing loop (10) which can enable an oil path between the second hydraulic motor (9) and the control loop (6) to be communicated or disconnected is arranged between the second hydraulic motor (9) and the control loop (6) to be connected.
2. A tandem hydraulic motor drive screw apparatus according to claim 1, wherein the flushing circuit (10) comprises flushing valves (11) and control valves (12), the two hydraulic pipes (5) connected to the second hydraulic motor (9) are connected to the upper ports of the cavities B of the two flushing valves (11), the lower ports of the cavities B of the two flushing valves (11) are connected to the two hydraulic pipes (5) of the first hydraulic motor (4), the lower ports of the cavities B of the two flushing valves (11) are also connected to the two inlets of the control valve (12), one outlet of the control valve (12) is connected to the port on the side of the cavity B of the two flushing valves (11), the other outlet of the control valve (12) is connected to the port on the side of the cavity a of the two flushing valves (11), the cavities a of the two flushing valves (11), the ports a of the two flushing valves (11), and a of the two flushing valves (11), The ports of the cavities B are communicated with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920562113.9U CN210461238U (en) | 2019-04-23 | 2019-04-23 | Tandem hydraulic motor drive screw apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920562113.9U CN210461238U (en) | 2019-04-23 | 2019-04-23 | Tandem hydraulic motor drive screw apparatus |
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| Publication Number | Publication Date |
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| CN210461238U true CN210461238U (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920562113.9U Active CN210461238U (en) | 2019-04-23 | 2019-04-23 | Tandem hydraulic motor drive screw apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115870839A (en) * | 2023-03-08 | 2023-03-31 | 南京仁厚科技有限公司 | Fiberboard edging processing device |
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2019
- 2019-04-23 CN CN201920562113.9U patent/CN210461238U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115870839A (en) * | 2023-03-08 | 2023-03-31 | 南京仁厚科技有限公司 | Fiberboard edging processing device |
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