CN212838324U - Two-end busy engineering machinery gear pump - Google Patents
Two-end busy engineering machinery gear pump Download PDFInfo
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- CN212838324U CN212838324U CN202021077773.7U CN202021077773U CN212838324U CN 212838324 U CN212838324 U CN 212838324U CN 202021077773 U CN202021077773 U CN 202021077773U CN 212838324 U CN212838324 U CN 212838324U
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Abstract
The utility model relates to a fork truck equipment field especially relates to a busy engineering machine tool gear pump in both ends. The oil-out safety valve and the oil-out safety channel are arranged on the pump body, the oil-out safety valve is arranged in the oil-out safety channel, the oil-out safety channel is communicated with the oil-out cavity and extends to the outside of the pump body, an internal oil duct is arranged in the stator, an inlet and an outlet for oil passing of the hydraulic torque converter are arranged on the pump body, the inlet and the outlet are communicated with the internal oil duct, the torque converter oil-inlet safety valve and the oil-inlet safety channel are arranged on the pump body, the torque converter oil-inlet safety valve is arranged in the oil-inlet safety channel, and the oil-inlet safety. The utility model discloses can control the oil pressure in the pump body, promote the security performance and the life-span of gear pump.
Description
Technical Field
The utility model relates to a fork truck equipment field especially relates to a busy engineering machine tool gear pump in both ends.
Background
Along with the development of science and technology, the loader digger both ends busy not only simple structure, convenient to use as engineering machine tool main part, a tractor serves several purposes moreover, can cooperate the multiple different operation of accomplishing, has improved the efficiency of construction greatly, can satisfy user's diversified demand.
For example, chinese patent No. CN207178188U, granted No. 2018.04.03, entitled "a multifunctional internal gear pump" discloses a multifunctional internal gear pump, which includes: gear pump seat, gear pump outer lane, gear pump inner circle, rotatory shifting block and closing plate, the indent is provided with the gear chamber in the gear pump seat, the gear pump outer lane sets up in the gear chamber, the gear pump inner circle sets up in the gear pump outer lane and intermeshing, be provided with the fabrication hole in the gear pump inner circle, rotatory shifting block sets up in the fabrication hole, the indent is provided with the draw-in groove on the rotatory shifting block excircle, evagination sets up and extends to the fixture block in the draw-in groove in the fabrication hole of gear pump inner circle.
However, the conventional gear pump has the disadvantages of complicated structure, low safety performance, short service life and the like due to the fact that the internal oil pressure is too high and is easy to be abnormal as in the patent.
Disclosure of Invention
Based on there is the structure complicacy in the gear pump among the prior art, the too high safety performance that leads to unusually not high easily appearing of inside oil pressure, the short-lived not enough, the utility model provides a busy engineering machine tool gear pump in both ends can control the internal oil pressure of pump, promotes the safety performance and the life-span of gear pump.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a gear pump of double-end busy engineering machinery comprises a pump body, wherein a stator is arranged on the pump body, the stator is used for connecting a hydraulic torque converter, a driving gear and a driven gear which are meshed with each other are arranged in the pump body, the driving gear is arranged on the stator, the driving gear and the driven gear form a gear pair, the gear pair divides an inner cavity of the pump body into an oil inlet cavity and an oil outlet cavity, an oil inlet communicated with the oil inlet cavity and an oil outlet communicated with the oil outlet cavity are arranged on the pump body, an oil outlet safety valve and an oil outlet safety channel are arranged on the pump body, the oil outlet safety valve is arranged in the oil outlet safety channel, the oil outlet safety channel is communicated with the oil outlet cavity and extends to the outside of the pump body, an internal oil passage is arranged in the stator, an inlet and an outlet for oil through of the hydraulic torque converter are arranged on the pump body, the inlet and the outlet are, the oil inlet safety channel is communicated with the internal oil duct. When the technical scheme is implemented, when the pressure of the oil outlet cavity is greater than the set pressure of the oil outlet safety valve, the oil outlet safety valve opens the oil outlet safety channel, and oil is discharged out of the pump body from the oil outlet safety channel through the oil outlet safety valve; when the oil pressure entering the hydraulic torque converter is larger than the set pressure of the oil inlet safety valve of the torque converter, the oil inlet safety valve opens the oil inlet safety channel, and oil enters the oil inlet cavity or is discharged out of the pump body from the oil inlet safety channel through the oil inlet safety valve. The hydraulic torque converter has oil passing capacity, the torque converter oil inlet safety valve is arranged, the pump body is further provided with the oil outlet safety valve, the oil inlet pressure of the hydraulic torque converter and the oil outlet pressure of the oil outlet cavity are both within a safety set value, the hydraulic torque converter oil inlet safety valve is more reliable, more application occasions are provided, the safety performance and the service life of the gear pump are improved, and the requirement of an oil pump for modern engineering machinery is met.
Preferably, the torque converter oil inlet safety valve comprises a pin shaft and a steel ball, a first spring is sleeved on the pin shaft, a radial protrusion is arranged on the pin shaft, one end of the first spring abuts against the radial protrusion, the oil inlet safety passage is provided with a narrowed first sealing opening, and the steel ball abuts against the first sealing opening by the other end of the first spring. When the oil pressure of the internal oil duct is too high, the pressure of the oil overcomes the acting force of the first spring, the steel ball is pushed open, the oil inlet safety channel is opened to release the pressure, the oil inlet safety channel can be communicated with the oil inlet cavity, and the flowing oil directly enters the oil inlet cavity to be utilized.
Preferably, the pin shaft is fixed on the pump body through a first elastic pin. The first elastic pin is used for fixing the position of the pin shaft, so that the pin shaft is stably positioned.
Preferably, the oil outlet safety valve comprises a valve core and a top pin, the valve core is arranged on the top pin in a sliding mode, a second spring is arranged between the valve core and the top pin, the oil outlet safety channel is provided with a second narrowed sealing opening, and the second spring enables the valve core to abut against the second sealing opening. When the oil pressure of the oil outlet cavity is too high, the pressure of the oil overcomes the acting force of the second spring, the valve core is pushed open, the oil outlet safety channel is opened for pressure relief, and the oil is discharged out of the pump body through the oil outlet safety channel.
Preferably, the valve core is provided with a slide hole, the ejector pin is arranged in the slide hole in a sliding mode, and the sliding direction of the ejector pin is parallel to the length direction of the slide hole. The pressure of the oil outlet cavity is large, the sliding structure between the ejector pin and the valve core can ensure the stable sliding direction of the valve core, the situation of unstable movement due to large oil pressure is avoided, and the reliability is improved.
Preferably, a gasket is arranged on a first section of the ejector pin, which is far away from the valve core, and a second elastic pin is arranged on the pump body and is abutted to the outer side of the gasket. The second elastic pin is used for limiting outward movement of the gasket, and the non-embedded assembling structure effectively reduces abrasion of the gasket and ensures the stable position of the gasket.
Preferably, the inner hole of the driving gear is provided with a bimetallic bearing, and the driving gear is positioned on the stator through the bimetallic bearing. The bimetallic bearing plays a role in safety and can bear the operation under complex and severe working conditions.
The utility model has the advantages that: the hydraulic torque converter has oil passing capacity, the torque converter oil inlet safety valve is arranged, the pump body is further provided with the oil outlet safety valve, the oil inlet pressure of the hydraulic torque converter and the oil outlet pressure of the oil outlet cavity are both within a safety set value, the hydraulic torque converter oil inlet safety valve is more reliable, more application occasions are provided, the safety performance and the service life of the gear pump are improved, and the requirement of an oil pump for modern engineering machinery is met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the following drawings without inventive work.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the operation of the present invention;
fig. 3 is a schematic diagram of the internal structure of the present invention.
Reference numerals: the pump body 1, the stator 2, the driving gear 3, the driven gear 4, the oil inlet chamber 5, the oil outlet chamber 6, the oil inlet 7, the oil outlet 8, the oil outlet safety valve 9, the valve core 91, the knock pin 92, the second spring 93, the second sealing port 94, the gasket 95, the second elastic pin 96, the internal oil duct 11, the inlet 12, the outlet 13, the torque converter oil inlet safety valve 14, the pin shaft 141, the steel ball 142, the first spring 143, the radial protrusion 144, the first sealing port 145, the first elastic pin 146, and the metal bearing 15.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
A gear pump for a double-ended construction machine according to an embodiment of the present invention will be described below with reference to the accompanying drawings, as shown in fig. 1 to 3,
a double-end busy engineering mechanical gear pump comprises a pump body 1, wherein a stator 2 is arranged on the pump body, the stator is used for connecting a hydraulic torque converter, a driving gear 3 and a driven gear 4 which are meshed with each other are arranged in the pump body, the driving gear is arranged on the stator, the driving gear and the driven gear form a gear pair, the gear pair divides an inner cavity of the pump body into an oil inlet cavity 5 and an oil outlet cavity 6, an oil inlet 7 communicated with the oil inlet cavity and an oil outlet 8 communicated with the oil outlet cavity are arranged on the pump body, an oil outlet safety valve 9 and an oil outlet safety channel are arranged on the pump body, the oil outlet safety valve is arranged in the oil outlet safety channel, the oil outlet safety channel is communicated with the oil outlet cavity and extends to the outside of the pump body, an internal oil duct 11 is arranged in the stator, an inlet 12 and an outlet 13 for communicating oil of the hydraulic torque converter are arranged, the torque converter oil inlet safety valve is arranged in the oil inlet safety channel, the oil inlet safety channel is communicated with the internal oil duct, the inner hole of the driving gear is provided with the bimetallic bearing 16, the driving gear is positioned on the stator through the bimetallic bearing, and the bimetallic bearing plays a role in safety and can bear the operation under complex and severe working conditions. When the technical scheme is implemented, when the pressure of the oil outlet cavity is greater than the set pressure of the oil outlet safety valve, the oil outlet safety valve opens the oil outlet safety channel, and oil is discharged out of the pump body from the oil outlet safety channel through the oil outlet safety valve; when the oil pressure entering the hydraulic torque converter is larger than the set pressure of the oil inlet safety valve of the torque converter, the oil inlet safety valve opens the oil inlet safety channel, and oil enters the oil inlet cavity or is discharged out of the pump body from the oil inlet safety channel through the oil inlet safety valve. The hydraulic torque converter has oil passing capacity, the torque converter oil inlet safety valve is arranged, the pump body is further provided with the oil outlet safety valve, the oil inlet pressure of the hydraulic torque converter and the oil outlet pressure of the oil outlet cavity are both within a safety set value, the hydraulic torque converter oil inlet safety valve is more reliable, more application occasions are provided, the safety performance and the service life of the gear pump are improved, and the requirement of an oil pump for modern engineering machinery is met.
The torque converter oil inlet safety valve comprises a pin shaft 141 and a steel ball 142, a first spring 143 is sleeved on the pin shaft, a radial protrusion 144 is arranged on the pin shaft, one end of the first spring abuts against the radial protrusion, the oil inlet safety channel is provided with a narrowed first sealing opening 145, the steel ball abuts against the first sealing opening by the other end of the first spring, the pin shaft is fixed on the pump body through a first elastic pin 146, and the first elastic pin is used for fixing the position of the pin shaft to enable the pin shaft to be stably positioned. When the oil pressure of the internal oil duct is too high, the pressure of the oil overcomes the acting force of the first spring, the steel ball is pushed open, the oil inlet safety channel is opened to release the pressure, the oil inlet safety channel can be communicated with the oil inlet cavity, and the flowing oil directly enters the oil inlet cavity to be utilized.
The oil outlet safety valve comprises a valve core 91 and a top pin 92, the valve core is arranged on the top pin in a sliding mode, a second spring 93 is arranged between the valve core and the top pin, the oil outlet safety channel is provided with a narrowed second sealing port 94, the valve core is supported and supported on the second sealing port by the second spring, when the oil pressure of the oil outlet cavity is too high, the acting force of the second spring is overcome by the pressure of oil, the valve core is pushed open to open the oil outlet safety channel to release the pressure, and the oil is discharged out of the pump body through the oil outlet safety channel. The valve core is provided with a sliding hole, the ejector pin is arranged in the sliding hole in a sliding mode, the sliding direction of the ejector pin is parallel to the length direction of the sliding hole, the pressure of the oil outlet cavity is large, the stable sliding direction of the valve core can be guaranteed through the sliding structure between the ejector pin and the valve core, the situation of unstable movement due to large oil pressure is avoided, and the reliability is improved. The first section of the knock pin far away from the valve core is provided with a gasket 95, the pump body is provided with a second elastic pin 96, and the second elastic pin is propped against the outer side of the gasket. The second elastic pin is used for limiting outward movement of the gasket, and the non-embedded assembling structure effectively reduces abrasion of the gasket and ensures the stable position of the gasket.
The utility model discloses the during operation, at first the power supply passes through the shift fork and drives the driving gear rotatory as the shown orientation of figure 2, and the driving gear hole has bimetallic bearing and stator location, and the interference fit has the driven shaft in the pump body, and the driven gear hole is equipped with bearing. The driving gear rotates to enable the driving gear and the driven gear to rotate in a meshed mode to enable the oil inlet cavity to be in a vacuum negative pressure state, oil pressure is sucked into the oil inlet cavity through the oil inlet under the action of atmospheric pressure, through sequential meshing of the gears, when the gears enter the space between the teeth, the volume is reduced, and oil is brought to the oil outlet cavity from the oil inlet cavity and led to the oil outlet. When the pressure of the oil outlet cavity is greater than the set pressure of the oil outlet safety valve, the pressure oil in the oil outlet cavity overcomes the acting force of the second spring to push the valve core to open the oil outlet safety channel, and the oil is discharged out of the oil pump through the oil outlet safety valve. Oil supplied to the hydraulic torque converter firstly enters the internal oil passage through the inlet and then enters the hydraulic torque converter after entering the outlet. When the oil pressure entering the hydraulic torque converter is larger than the set pressure of the oil inlet safety valve of the torque converter, the pressure oil in the internal oil duct overcomes the action of the first spring, the steel ball is pushed to open the channel, and the oil enters the oil inlet cavity through the oil inlet safety valve of the torque converter.
The above is only the preferred embodiment of the present invention, and the patent scope of the present invention is not limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.
Claims (7)
1. A double-end busy engineering mechanical gear pump comprises a pump body, wherein a stator is arranged on the pump body, the stator is used for connecting a hydraulic torque converter, and the double-end busy engineering mechanical gear pump is characterized in that a driving gear and a driven gear which are meshed with each other are arranged in the pump body, the driving gear is arranged on the stator, the driving gear and the driven gear form a gear pair, the gear pair divides an inner cavity of the pump body into an oil inlet cavity and an oil outlet cavity, an oil inlet communicated with the oil inlet cavity and an oil outlet communicated with the oil outlet cavity are arranged on the pump body, an oil outlet safety valve and an oil outlet safety channel are arranged on the pump body, the oil outlet safety valve is arranged in the oil outlet safety channel, the oil outlet safety channel is communicated with the oil outlet cavity and extends to the outside of the pump body, an internal oil duct is arranged in the stator, an inlet and an, the torque converter oil inlet safety valve is arranged in the oil inlet safety channel, and the oil inlet safety channel is communicated with the internal oil duct.
2. The gear pump of two-end busy engineering machinery according to claim 1, wherein the torque converter oil inlet safety valve comprises a pin and a steel ball, a first spring is sleeved on the pin, a radial protrusion is arranged on the pin, one end of the first spring abuts against the radial protrusion, the oil inlet safety channel has a first narrowed sealing opening, and the other end of the first spring abuts against the steel ball against the first sealing opening.
3. The gear pump of claim 2, wherein the pin is fixed to the pump body by a first resilient pin.
4. The gear pump of claim 1, wherein the oil relief valve comprises a valve core and a top pin, the valve core is slidably disposed on the top pin, a second spring is disposed between the valve core and the top pin, the oil relief passage has a narrowed second sealing opening, and the second spring abuts the valve core against the second sealing opening.
5. The gear pump of two-end busy engineering machinery as claimed in claim 4, wherein said valve core is provided with a slide hole, the knock pin is slidably disposed in the slide hole, and the sliding direction of the knock pin is parallel to the length direction of the slide hole.
6. The gear pump of two-end busy engineering machinery of claim 4, wherein the first section of the knock pin away from the valve core is provided with a gasket, and the pump body is provided with a second elastic pin which is abutted against the outer side of the gasket.
7. The gear pump of claim 1, wherein the drive gear has a bimetallic bearing on its inner bore, and the drive gear is positioned on the stator by the bimetallic bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021077773.7U CN212838324U (en) | 2020-06-11 | 2020-06-11 | Two-end busy engineering machinery gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021077773.7U CN212838324U (en) | 2020-06-11 | 2020-06-11 | Two-end busy engineering machinery gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212838324U true CN212838324U (en) | 2021-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021077773.7U Active CN212838324U (en) | 2020-06-11 | 2020-06-11 | Two-end busy engineering machinery gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212838324U (en) |
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2020
- 2020-06-11 CN CN202021077773.7U patent/CN212838324U/en active Active
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