CN213116688U - Constant-flow quantitative steering vane pump - Google Patents

Abstract

The utility model relates to a constant current ration turns to impeller pump, which comprises a pump body, a stator, the rotor, blade and pivot, be provided with low pressure runner and high-pressure runner in the pump body, the pivot is rotated and is installed on the pump body, the pivot is connected to the rotor, the stator is installed in the pump body, the blade is installed in the rotor, the low pressure runner is equipped with the oil inlet, the high-pressure runner is equipped with the oil-out, be equipped with accuse in the high-pressure runner and flow the subassembly, the accuse flows the subassembly and includes the nut that produces oil, adjustment slider and flow spring, it is equipped with accuse mouth to go out oil nut week, be equipped with the adjustment chamber of sliding in the pump body, the adjustment slider is located. By adopting the scheme, when the rotating speed of the rotating shaft is increased and the oil pressure in the high-pressure flow channel is increased, the adjusting slide block is pushed by the hydraulic pressure of the high-pressure flow channel to enable the position with the larger radius on the adjusting section and the flow control port to form a smaller flow area, so that the output oil pressure is reduced.

Description

Constant-flow quantitative steering vane pump

Technical Field

The utility model relates to an auto-parts technical field, concretely relates to constant current ration turns to vane pump.

Background

The steering vane pump is applied to automobile accessories for assisting in rotating in the direction, so that the steering vane pump generates oil pressure with certain pressure through pumping oil in the steering process to assist the automobile in steering, and the steering is easier and more convenient.

The existing steering vane pump comprises a pump body, a stator, a rotor, vanes and a rotating shaft, wherein an oil inlet and an oil outlet are formed in the pump body, the rotating shaft is rotatably installed on the pump body and is fixedly connected with the rotor, the stator is fixedly installed in the pump body and is located on the periphery of the rotor, the vanes are inserted and installed on the rotor, the rotating shaft drives the rotor to rotate and is centrifugally attached to the inner periphery of the stator, and therefore thrust oil is sucked from the oil inlet and pumped out from the oil outlet under the rotation.

The existing steering vane pump has the following problems: when the rotating speed of the rotating shaft driving rotor is faster and faster, the oil pressure pumped out of the oil outlet is too high, so that the oil pumping amount is too large to cause excessive power assistance, the direction is controlled to float, and the control sensitivity is reduced.

Disclosure of Invention

The utility model aims to provide a not enough to prior art exists, the utility model aims to provide a through rise at the pivot rotational speed and when increasing the oil pressure in the high pressure runner, promote and make the bigger position of radius and accuse flow mouth formation littleer flow area on the adjustment section through the hydraulic pressure that the adjustment slider received the high pressure runner to reduce a constant current ration of output oil pressure and turn to impeller pump.

In order to achieve the above purpose, the utility model provides a following technical scheme: including the pump body, stator, rotor, blade and pivot, be provided with the runner in the pump body, the pivot is rotated and is installed on the pump body, stator, rotor, blade set up in the runner, and rotor fixed connection pivot, stator fixed mounting is in the pump body, and is located the rotor periphery, and the blade is inserted and is established and install on the rotor, the runner is including low pressure runner and the high pressure runner that is located the rotor both sides, the low pressure runner is provided with the oil inlet, the high pressure runner is provided with oil-out, its characterized in that: the high-pressure runner is located the oil-out and is provided with the accuse subassembly that flows, the accuse subassembly that flows includes the nut that produces oil, adjustment slider and flow spring, the nut periphery threaded connection that produces oil is in the oil-out, and the nut that produces oil inner periphery is provided with the accuse mouth that communicates with the high-pressure runner, it is provided with the adjustment chamber that slides that supplies the adjustment slider to slide along the direction of vertical accuse mouth to deviate from the nut side that produces oil to lie in the nut that produces oil in the pump body, and the adjustment chamber that slides sets up with the high-pressure runner intercommunication towards the nut side that produces oil, the flow spring compression sets up in the adjustment slider deviates from the nut side that produces oil, the adjustment slider is provided with the accuse flow rod of wearing to locate perpendicularly accuse mouth towards the nut side that produces oil, the accuse flow rod is the.

Through adopting above-mentioned technical scheme, the rotor rotates through the drive of pivot and realizes pushing force oil from the low pressure runner in towards high pressure runner pressure boost propelling movement, and along with the increase of pivot rotational speed, produce the thrust oil of bigger pressure in the high pressure runner, in addition, when the oil pressure in the high pressure runner progressively increases, the high pressure runner is most with the crescent and drive adjustment slider towards principle out-of-oil nut slippage to the thrust of adjustment slider, thereby make the position that the adjustment section cross-section is bigger place in the accuse flow mouth, make the cross-section that the high pressure runner got into out-of-oil nut littleer and reduce the flow and reduce the oil pressure, thereby prevent that the oil pressure from too high to lead to the helping hand excessively to lead to the.

The utility model discloses further set up to: the flow control rod is positioned on the adjusting section and is provided with a columnar speed increasing section towards the adjusting slide block side, and the circumferential cross-sectional area of the speed increasing section is smaller than or equal to the minimum circumferential cross-sectional area of the adjusting section.

Through adopting above-mentioned technical scheme, the setting of acceleration rate section for the section that gets into out the oil nut to the high pressure runner remains unchanged when oil pressure is less in the high pressure runner, thereby realizes that the oil pressure increases along with the rotational speed risees, prevents to provide sufficient thrust oil pressure and make control thrust not enough when the oil pressure is less.

The utility model discloses further set up to: the periphery of adjustment slider is provided with the airtight binding face of the interior airtight laminating in chamber that slides with the adjustment, be provided with in the pump body and slide the chamber and lie in the adjustment slider and deviate from the runner that switches on of the nut side intercommunication that produces oil with the adjustment, be provided with in the nut that produces oil and switch on the orifice that the runner and the nut that produces oil inner periphery communicate respectively.

By adopting the technical scheme, 1, the arrangement of the conduction flow channel enables partial oil pressure in the high-pressure flow channel to be transmitted to the adjusting sliding cavity through the damping hole and positioned on the side, away from the oil outlet nut, of the adjusting sliding block to be matched with the flow spring to carry out oil pressure balance with the high-pressure flow channel, so that the flow spring with smaller elastic coefficient can be adopted to reduce the elastic pushing acting force on the pump body and the adjusting sliding block, and the flow spring is protected; 2. the damping holes are arranged in the oil outlet nut, the high-pressure flow channel oil pressure with different proportions can be conveyed to the adjusting sliding cavity to be positioned on the side, deviating from the oil outlet nut, of the adjusting sliding block to carry out oil pressure balance according to the requirements, and the adjusting sliding nut has the adjustable effect.

The utility model discloses further set up to: the number of the closed binding surfaces is at least two, and each closed binding surface is respectively positioned at two sides of the sliding direction of the adjusting slide block, an oil return groove is arranged between the closed binding surfaces at the two sides of the periphery of the adjusting slide block, an oil return flow passage for communicating the oil return groove and the low-pressure flow passage is arranged in the pump body, an oil return cavity is arranged in the adjusting slide block, the oil return cavity is provided with a pressure relief inlet communicated with the adjusting slide cavity at the side of the adjusting slide block departing from the oil outlet nut and a pressure relief outlet communicated with the oil return groove, a pressure relief assembly is arranged in the oil return cavity and comprises a plugging steel ball, a thrust block and a thrust spring, the thrust piece slides along perpendicular pressure release import direction and sets up in the oil gallery, thrust spring compression sets up and deviates from the pressure release import side in the thrust piece, the shutoff steel ball sets up between pressure release import and thrust piece for open and close the pressure release import.

Through adopting above-mentioned technical scheme, when the oil pressure in the high pressure runner was too high, make to spread into the oil pressure that adjustment slip chamber is located the adjustment slider and deviates from the nut side that produces oil and rise in step to promote the shutoff steel ball and communicate back to oil chamber, oil gallery through the pressure release import, and finally get back to the low pressure runner and play the pressure release effect, prevent that the too big helping hand that appears of oil pressure from causing the incident.

The utility model discloses further set up to: the adjustment slider includes the portion of sliding and transfers the splenium, the pressure release import sets up in transferring the splenium, transfer splenium threaded connection in the portion of sliding, and the rotation of pressure regulation portion direction of advancing and pressure release import are mutually perpendicular setting.

Through adopting above-mentioned technical scheme, the adjustment slider adopts threaded connection to carry out the screw thread rotation in the pressure regulating part of the portion that slides and realizes thrust spring's preset pressure to realize carrying out the adaptation through convenient debugging and be suitable for with the oil pressure of required control.

The utility model discloses further set up to: the oil outlet nut is provided with a positioning surface which is used for abutting against the adjusting slide block towards the adjusting slide block side, and the oil outlet nut is arranged on the positioning surface and is provided with a pre-conduction notch which is used for communicating the high-pressure flow channel with the inside of the oil outlet nut.

Through adopting above-mentioned technical scheme, the setting of locating surface for when the pivot non-rotation and vane pump non-during operation, bear the weight of the pushing action of flow spring to the adjustment slider, prevent the drunkenness of adjustment slider, and the setting of switching on the breach in advance, then just beginning the during operation at the vane pump, communicate high-pressure runner and interior with the oil outlet nut in advance, make start more smooth and easy, prevent that the start-up process from appearing the shake phenomenon.

The utility model discloses further set up to: and the inner periphery of the oil outlet nut is provided with mounting threads away from the adjusting slider.

Through adopting above-mentioned technical scheme, the setting of installation screw thread for external structure can be more convenient install.

The invention is further described with reference to the accompanying drawings and the detailed description.

Drawings

FIG. 1 is an assembly view of an embodiment of the present invention;

FIG. 2 is an exploded view of an embodiment of the present invention;

FIG. 3 is a right side view of an embodiment of the present invention;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is a front view of an embodiment of the present invention;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 5;

FIG. 7 is an enlarged view of a portion of FIG. 4;

fig. 8 is an enlarged view of C in fig. 7.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-2, the present invention discloses a constant flow quantitative steering vane 23 pump, which comprises a pump body 1, a stator 21, a rotor 22, a vane 23, a rotating shaft 24 and a belt pulley 25, wherein a pump cover 11 is installed on the left side of the pump body 1 by means of a bolt, a flow channel 12 is arranged in the pump body 1, the rotating shaft 24 is rotatably installed on the pump body 1 by means of a bearing, etc., the belt pulley 25 is fixedly installed on the right side of the rotating shaft 24 by means of a key connection, etc., and is located outside the pump body 1, the stator 21, the rotor 22, the vane 23 is arranged in the flow channel 12, and the rotor 22 is fixedly installed on the periphery of the rotating shaft 24 by means of a key connection, etc., the stator 21 is fixedly installed in the pump body 1 by means of a bolt, and is located on the periphery of the rotor 22, a gap is opened on the rotor 22 so, and the low-pressure flow passage 121 is provided with an oil inlet 123, and the high-pressure flow passage 122 is provided with an oil outlet 124, so that rotation of the belt wheel 25 can be realized through an external driving device such as a belt, and rotation of the rotating shaft 24 is driven to realize rotation of the driving blades 23 of the rotor 22, thereby realizing pressurization of thrust oil from the oil inlet 123 along the low-pressure flow passage 121, entering the high-pressure flow passage 122, and pumping out from the oil outlet 124 to realize directional boosting.

Referring to fig. 3-4 and 7-8, in the present embodiment, the flow control assembly 3 is disposed at the oil outlet 124 of the high-pressure flow passage 122, wherein the flow control assembly 3 includes an oil outlet nut 31, an adjusting slider 32 and a flow spring 33, an outer circumference of the oil outlet nut 31 is connected to the oil outlet 124 by a thread, a flow control port 311 communicated with the high-pressure flow passage 122 is disposed at a left side of an inner circumference of the oil outlet nut 31, a bore diameter of the flow control port 311 is 1/2-3/4 of an inner circumference diameter of the oil outlet nut 31, an adjusting sliding cavity 13 for sliding the adjusting slider 32 in a left-right direction is disposed at a left side of the oil outlet nut 31 in the pump body 1, the adjusting sliding cavity 13 is communicated with the high-pressure flow passage 122 toward a right side, the flow spring 33 is disposed at a left side of the adjusting slider 32 in a compressed manner, and the adjusting slider 32, the adjusting slide block 32 is integrally formed with a flow control rod 321 which axially extends along the left-right direction and penetrates through the flow control port 311 towards the oil outlet nut 31 side, and an adjusting section 3211 which is flared along the right direction is arranged in the middle of the flow control rod 321, so that thrust oil with higher pressure is generated in the high-pressure flow passage 122 along with the increase of the rotation speed of the rotating shaft 24, when the oil pressure in the high-pressure flow passage 122 is gradually increased, the thrust of the high-pressure flow passage 122 on the adjusting slide block 32 is gradually increased to drive the adjusting slide block 32 to slide away from the oil outlet nut 31, and thus the position with the larger section of the adjusting section 3211 is arranged in the flow control port 311, so that the section of the high-pressure flow passage 122 entering the oil outlet nut 31 is smaller, the flow rate is relatively reduced, the oil pressure output from the oil outlet 124 is relatively reduced, and the unsmooth operation.

Wherein, the right side of the inner periphery of the oil outlet nut 31 is provided with a mounting thread 312, so that the external connection structure can be mounted more conveniently.

Preferably, the flow control rod 321 in this embodiment is located on the left side of the adjusting section 3211, and a cylindrical speed increasing section 3212 is integrally formed, and the circumferential cross-sectional area of the speed increasing section 3212 is equal to the minimum circumferential cross-sectional area of the adjusting section 3211, so that when the oil pressure in the high-pressure flow passage 122 is small, the cross-section of the high-pressure flow passage 122 entering the oil outlet nut 31 is kept unchanged along with the rise of the oil pressure, so that the oil pressure is increased along with the rise of the rotation speed, and the problem that sufficient thrust oil pressure cannot be provided when the oil pressure is small so as to control the thrust insufficiency is solved.

Preferably, the positioning surface 313 for abutting against the adjusting slider 32 is disposed on the oil outlet nut 31 toward the adjusting slider 32 in this embodiment, so that when the rotating shaft 24 does not rotate and the vane 23 pump does not operate, the positioning surface 313 is used to carry the pushing action of the flow spring 33 on the adjusting slider 32, thereby preventing the adjusting slider 32 from moving, and in addition, the oil outlet nut 31 is disposed on the positioning surface 313 and radially penetrates through a pre-conducting notch 314 for communicating the high-pressure flow passage 122 with the inside of the oil outlet nut 31, so that when the vane 23 pump starts to operate, the high-pressure flow passage 122 and the inside of the oil outlet nut 31 are communicated in advance, thereby making the start more smooth and preventing the starting process from shaking.

In addition, in the embodiment, the outer periphery of the adjustment slider 32 is provided with a sealed joint surface 322 closely jointed with the inner periphery of the adjustment sliding cavity 13, the pump body 1 is provided with the conduction flow channel 14 communicated with the adjustment sliding cavity 13 positioned at the right side of the adjustment slider 32, and the oil outlet nut 31 is provided with the damping hole 315 respectively communicated with the conduction flow channel 14 and the inner periphery of the oil outlet nut 31, so that the arrangement of the conduction flow channel 14 enables part of the oil pressure in the high-pressure flow channel 122 to be transmitted to the adjustment sliding cavity 13 positioned at the left side of the adjustment slider 32 through the damping hole 315 to be matched with the flow spring 33 to perform oil pressure balance with the high-pressure flow channel 122, and the flow spring 33 with a smaller elastic coefficient can be adopted to reduce the elastic force pushing the pump body 1 and the adjustment slider 32, thereby protecting.

With reference to fig. 5-6, the number of the closed adhesion surfaces 322 in this embodiment is five, two closed adhesion surfaces 322 are located on the right side of the adjustment slider 32, three closed adhesion surfaces 322 are located on the left side of the adjustment slider 32, in addition, an annular oil return groove 323 is arranged in the middle of the outer periphery of the adjustment slider 32, an oil return channel 15 for communicating the oil return groove 323 with the low-pressure channel 121 is arranged in the pump body 1, in addition, an oil return cavity 324 extending left and right is arranged in the adjustment slider 32, a pressure relief inlet 3241 communicated with the left side of the adjustment sliding cavity 13 located in the adjustment slider 32 and a pressure relief outlet 3242 communicated with the oil return groove 323 are arranged on the left side of the oil return cavity 324, in addition, a pressure relief assembly 4 is arranged in the oil return cavity 324, wherein the pressure relief assembly 4 includes a blocking steel ball 41, a thrust block 42 and a thrust spring 43, the thrust block 42 is slidably arranged, thrust spring 43 compression sets up in the right side of thrust piece 42, shutoff steel ball 41 sets up between pressure release import 3241 and thrust piece 42, be used for opening and close pressure release import 3241, consequently, when the oil pressure in high pressure runner 122 is too high, make to introduce into the oil pressure that adjustment glide cavity 13 is located adjustment slider 32 and deviates from oil outlet nut 31 side and rise in step, and promote shutoff steel ball 41 and communicate oil return chamber 324, oil return groove 323 through pressure release import 3241, and finally get back to low pressure runner 121 and play the pressure release effect, prevent that the too big helping hand of the too big appearance of oil pressure from causing the incident.

Preferably, the adjusting slider 32 in this embodiment includes a sliding portion 325 and a pressure adjusting portion 326, the pressure relief inlet 3241 is disposed in the pressure adjusting portion 326, the pressure adjusting portion 326 is screwed to the sliding portion 325, and the rotation progressive direction of the pressure adjusting portion 326 is along the left-right direction, so that the screw rotation of the adjusting portion moves left and right relative to the sliding portion 325, and therefore the thrust spring 43 can be compressed or released by blocking the steel ball 41 and the thrust block 42, the preset pressure of the thrust spring 43 can be adjusted, and the adjustment and application to the oil pressure to be controlled can be realized by convenient adjustment.

Claims (7)

1. The utility model provides a constant current ration vane pump that turns to, includes the pump body, stator, rotor, blade and pivot, be provided with the runner in the pump body, the pivot is rotated and is installed on the pump body, stator, rotor, blade set up in the runner, and rotor fixed connection pivot, stator fixed mounting is in the pump body, and is located the rotor periphery, and the blade is inserted and is established and install on the rotor, the runner is including low pressure runner and the high pressure runner that is located the rotor both sides, the low pressure runner is provided with the oil inlet, the high pressure runner is provided with oil-out, its characterized in that: the high-pressure runner is located the oil-out and is provided with the accuse subassembly that flows, the accuse subassembly that flows includes the nut that produces oil, adjustment slider and flow spring, the nut periphery threaded connection that produces oil is in the oil-out, and the nut that produces oil inner periphery is provided with the accuse mouth that communicates with the high-pressure runner, it is provided with the adjustment chamber that slides that supplies the adjustment slider to slide along the direction of vertical accuse mouth to deviate from the nut side that produces oil to lie in the nut that produces oil in the pump body, and the adjustment chamber that slides sets up with the high-pressure runner intercommunication towards the nut side that produces oil, the flow spring compression sets up in the adjustment slider deviates from the nut side that produces oil, the adjustment slider is provided with the accuse flow rod of wearing to locate perpendicularly accuse mouth towards the nut side that produces oil, the accuse flow rod is the.

2. The constant-flow quantitative steering vane pump according to claim 1, characterized in that: the flow control rod is positioned on the adjusting section and is provided with a columnar speed increasing section towards the adjusting slide block side, and the circumferential cross-sectional area of the speed increasing section is smaller than or equal to the minimum circumferential cross-sectional area of the adjusting section.

3. The constant-flow quantitative steering vane pump according to claim 1, characterized in that: the periphery of adjustment slider is provided with the airtight binding face of the interior airtight laminating in chamber that slides with the adjustment, be provided with in the pump body and slide the chamber and lie in the adjustment slider and deviate from the runner that switches on of the nut side intercommunication that produces oil with the adjustment, be provided with in the nut that produces oil and switch on the orifice that the runner and the nut that produces oil inner periphery communicate respectively.

4. A constant flow quantitative steering vane pump according to claim 3, characterized in that: the number of the closed binding surfaces is at least two, and each closed binding surface is respectively positioned at two sides of the sliding direction of the adjusting slide block, an oil return groove is arranged between the closed binding surfaces at the two sides of the periphery of the adjusting slide block, an oil return flow passage for communicating the oil return groove and the low-pressure flow passage is arranged in the pump body, an oil return cavity is arranged in the adjusting slide block, the oil return cavity is provided with a pressure relief inlet communicated with the adjusting slide cavity at the side of the adjusting slide block departing from the oil outlet nut and a pressure relief outlet communicated with the oil return groove, a pressure relief assembly is arranged in the oil return cavity and comprises a plugging steel ball, a thrust block and a thrust spring, the thrust piece slides along perpendicular pressure release import direction and sets up in the oil gallery, thrust spring compression sets up and deviates from the pressure release import side in the thrust piece, the shutoff steel ball sets up between pressure release import and thrust piece for open and close the pressure release import.

5. The constant-flow quantitative steering vane pump according to claim 4, characterized in that: the adjustment slider includes the portion of sliding and transfers the splenium, the pressure release import sets up in transferring the splenium, transfer splenium threaded connection in the portion of sliding, and the rotation of pressure regulation portion direction of advancing and pressure release import are mutually perpendicular setting.

6. The constant-flow quantitative steering vane pump according to claim 1, characterized in that: the oil outlet nut is provided with a positioning surface which is used for abutting against the adjusting slide block towards the adjusting slide block side, and the oil outlet nut is arranged on the positioning surface and is provided with a pre-conduction notch which is used for communicating the high-pressure flow channel with the inside of the oil outlet nut.

7. The constant-flow quantitative steering vane pump according to claim 1, characterized in that: and the inner periphery of the oil outlet nut is provided with mounting threads away from the adjusting slider.

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