CN112855737A - Mechanism for reducing moving resistance of sucker and negative pressure adsorption wheel - Google Patents
Mechanism for reducing moving resistance of sucker and negative pressure adsorption wheel Download PDFInfo
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- CN112855737A CN112855737A CN202110377640.4A CN202110377640A CN112855737A CN 112855737 A CN112855737 A CN 112855737A CN 202110377640 A CN202110377640 A CN 202110377640A CN 112855737 A CN112855737 A CN 112855737A
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- 238000001179 sorption measurement Methods 0.000 title claims abstract description 98
- 230000007246 mechanism Effects 0.000 title claims abstract description 47
- 239000012530 fluid Substances 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims description 49
- 238000004891 communication Methods 0.000 claims description 8
- 238000000605 extraction Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 6
- 238000012856 packing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
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- 241000252254 Catostomidae Species 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 230000008261 resistance mechanism Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B47/00—Suction cups for attaching purposes; Equivalent means using adhesives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D57/00—Vehicles characterised by having other propulsion or other ground- engaging means than wheels or endless track, alone or in addition to wheels or endless track
- B62D57/02—Vehicles characterised by having other propulsion or other ground- engaging means than wheels or endless track, alone or in addition to wheels or endless track with ground-engaging propulsion means, e.g. walking members
- B62D57/024—Vehicles characterised by having other propulsion or other ground- engaging means than wheels or endless track, alone or in addition to wheels or endless track with ground-engaging propulsion means, e.g. walking members specially adapted for moving on inclined or vertical surfaces
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Abstract
The invention discloses a mechanism for reducing the moving resistance of a sucker and a negative pressure adsorption wheel, which comprise an air flow on-off structure body and an air flow on-off switch, wherein an air flow channel is arranged in the air flow on-off structure body; the air flow on-off trigger end of the air flow on-off switch is positioned in the adsorption cavity of the sucker, and the air flow on-off control end of the air flow on-off switch is positioned in the air flow channel; when external force is applied to the airflow on-off trigger end, the airflow on-off control end opens the airflow channel, and the adsorption cavity is communicated with the fluid of the air exhaust pipeline through the airflow channel; when the external force applied to the air flow on-off triggering end is removed, the air flow on-off control end seals the air flow channel, and the adsorption cavity is in air-tight connection with the air exhaust pipeline. The invention has moving resistance, can safely and reliably adsorb on a non-horizontal surface, and improves the moving speed.
Description
Technical Field
The invention relates to the technical field of negative pressure adsorption. In particular to a mechanism for reducing the moving resistance of a sucker and a negative pressure adsorption wheel.
Background
At present, along with the development of science and technology, the technical equipment requirement that can safe and reliable remove on non-horizontal surface increases year by year, like the self-cleaning of high building glass curtain wall, the automatic flaw detection of large-scale jar body, the automatic safety inspection in subway tunnel, even security and anti-terrorism all need on non-horizontal surface can safe and reliable removal technique. At present, technical equipment capable of safely and reliably moving on a non-horizontal surface mostly adopts several adsorption technologies such as a negative pressure sucker adsorption device, a magnetic adsorption device, a crawler-type negative pressure adsorption device and the like. The negative pressure sucker adsorption device adopts one or more suckers to adsorb on a non-horizontal surface, and the negative pressure sucker adsorption device is moved by a moving mechanism such as a wheel, so that the friction force between the adsorption device and the wall surface needs to be overcome, and the moving speed is slow and the moving efficiency is low. The magnetic adsorption device is only suitable for the adsorption movement of the steel surface, and the application scene is limited. The crawler-type negative pressure adsorption device realizes adsorption by virtue of adsorption discs distributed on a crawler, and has the defects of high noise, incapability of flexibly adjusting the direction and the like. Accordingly, research and development is needed to accommodate a wider range of adsorption technology devices to meet the ever-increasing demand for reliable movement of non-horizontal surfaces.
Disclosure of Invention
Therefore, the present invention is to provide a mechanism for reducing the moving resistance of a suction cup and a negative pressure suction wheel, which can safely and reliably suck on a non-horizontal surface and increase the moving speed.
In order to solve the technical problems, the invention provides the following technical scheme:
a mechanism for reducing the moving resistance of a sucker comprises an airflow on-off structure body and an airflow on-off switch, wherein an airflow channel is arranged inside the airflow on-off structure body; the air flow on-off trigger end of the air flow on-off switch is positioned in the adsorption cavity of the sucker, and the air flow on-off control end of the air flow on-off switch is positioned in the air flow channel; when external force is applied to the airflow on-off trigger end, the airflow on-off control end opens the airflow channel, and the adsorption cavity is communicated with the fluid of the air exhaust pipeline through the airflow channel; when the external force applied to the air flow on-off triggering end is removed, the air flow on-off control end seals the air flow channel, the adsorption cavity is connected with the air exhaust pipeline in an air seal mode, the sucker is matched with the mechanism for reducing the moving resistance of the sucker, when the device adsorbs on a non-horizontal plane, the ejector rod can move upwards through the adsorption cavity in the sucker when the device adsorbs, the adsorption cavity adsorbs a contacted wall surface, when the adsorption wheel rotates and the adsorption wheel separates from adsorption, air can enter the adsorption cavity, the ejector rod can move downwards at the moment, the valve body and a flow channel in the vacuum are cut off, the device does not have adsorption capacity, therefore, the moving resistance of the device can be reduced, the device can move only, can reliably adsorb and rotate on the non-horizontal plane, and can be applied to the reliable adsorption and walking of the moving device on the non-horizontal plane, the device realizes various preset functions, reduces the moving resistance of the traditional adsorption mode, obviously improves the moving speed, increases the flexibility of the bearing body, and realizes the reliable adsorption and flexible control of the carrier. Provides a new technical method for the safe and reliable movement of the carrier on the non-horizontal surface.
The mechanism for reducing the moving resistance of the sucker comprises an airflow on-off structure body, wherein the airflow on-off structure body comprises a vacuum cavity and a valve body, a first end of the vacuum cavity is hermetically connected with a second end of the valve body, the cross-sectional area of an airflow channel in the vacuum cavity is larger than that of the airflow channel in the valve body, the airflow channel in the valve body is of a trapezoidal structure, the airflow channel in the valve body is gradually reduced from the second end to the first end, the fluid channels in the valve body are slightly larger than the diameter of the cross section of the first end of a push rod, the airflow channel in the valve body is of a trapezoidal structure and gradually reduced from the second end to the first end, when the push rod moves upwards, under the action of the hollow shaft, external air is sucked into the hollow shaft from the second end of the airflow channel in the valve body due to the fact that the atmospheric pressure in the hollow shaft is, the valve body is provided with the trapezoidal structure, so that the air in the adsorption cavity can be enabled to rapidly and smoothly enter the hollow shaft, the adsorption capacity of the device is greatly improved, and the adsorption and air discharge are facilitated.
In the mechanism for reducing the moving resistance of the sucker, the airflow on-off switch comprises an ejector rod and a spring, the second end of the ejector rod penetrates through the airflow channel in the vacuum cavity and extends into the adsorption cavity, and the first end of the ejector rod is positioned in the airflow channel in the valve body; the cross section area of the second end of the ejector rod is smaller than that of the airflow channel in the vacuum cavity, the first end of the ejector rod is larger than that of the airflow channel in the vacuum cavity, the cross section of the first end of the ejector rod is T-shaped, the joint of the ejector rod and the first end of the vacuum cavity is of an arc structure and is in sealing connection when in contact, the second end of the spring is connected with the first end of the ejector rod, the first end of the spring is connected with the inner wall of the airflow channel in the valve body, the contact part of the first end of the ejector rod and the first end of the vacuum cavity is of the arc structure and is in sealing contact, when the device is not used, the ejector rod is sealed with the vacuum cavity under the action of the spring, air in the adsorption cavity cannot enter the hollow shaft, and the arc contact sealing structure can block the air to the outside, leakage is prevented, so that the sealing effect is good and the sealing performance is optimized when the device is not used and does not work.
In the mechanism for reducing the moving resistance of the sucker, the first end of the spring is connected with the inner wall of the first end of the airflow channel in the valve body, the inside of the valve body is inserted with the air exhaust pipeline and is hermetically connected with the outer wall of the first end of the airflow channel in the valve body, the first end and the second end of the air exhaust pipeline have larger diameters and are in an open form, the diameter of the air exhaust pipeline in the middle of the air exhaust pipeline is smaller, the second end of the air exhaust pipeline is an air inlet end, the first end of the air exhaust pipeline is an air outlet end, the outer surface of the middle position of the air exhaust pipeline is provided with the external thread matched with the nut, the first end of the valve body is provided with the gasket, the air exhaust pipeline is hermetically connected with the airflow channel in the valve body through the nut and the gasket, the diameter of the air exhaust pipeline is set to be larger at the two ends, and the diameter of the air inlet end of the air exhaust, prevent that the air from revealing, the inlet end sets up the diameter great simultaneously, when can reducing the air and enter into the exhaust duct, the resistance reduces, guarantees that the air is quick, unblocked entering, and the end diameter of giving vent to anger sets up great, can disperse gas, reduces gaseous lift, prevents to strike follow-up device because of the gas flow velocity is too fast, reduces the vibration that brings the device, prevents long-time vibration and causes the damage of device, extension fixture's life.
In the mechanism for reducing the moving resistance of the sucker, the second end of the vacuum cavity is in sealing connection with the sucker through the end face sealing ring, the first end of the sucker, which is close to the central hole, is provided with the stepped cavity, the stepped cavity at the first end of the sucker is in sealing connection with the second end of the airflow channel in the vacuum cavity through the stepped sealing ring, the airflow channel in the vacuum cavity is internally provided with the perforated gasket, the second end of the ejector rod is inserted in the central hole of the perforated gasket, the second end of the sucker is provided with the adsorption cavity, the adsorption cavity is the air suction end of the airflow channel in the airflow on-off structure body, the outer wall of the second end of the sucker and the inner wall of the adsorption cavity are provided with the anti-skid ring and the sucker sealing ring, and the sucker sealing ring is positioned on the outer side of the anti, the ladder sealing ring and the sucker sealing ring play a role in sealing, the anti-slip ring can increase the friction force between the wheel and the wall surface and prevent slipping, and the device can be suitable for various complex occasions and has a good sealing effect by the arrangement of the sucker sealing ring and the anti-slip ring.
The negative pressure adsorption wheel comprises a hollow shaft, a hollow pipeline, a rubber body, a hub and a mechanism for reducing the movement resistance of a sucker; the mechanism for reducing the moving resistance of the sucker comprises an airflow on-off structure body and an airflow on-off switch, wherein an airflow channel is arranged inside the airflow on-off structure body; the air flow on-off trigger end of the air flow on-off switch is positioned in the adsorption cavity of the sucker, and the air flow on-off control end of the air flow on-off switch is positioned in the air flow channel; when external force is applied to the airflow on-off trigger end, the airflow on-off control end opens the airflow channel, and the adsorption cavity is communicated with the fluid of the air exhaust pipeline through the airflow channel; when the external force applied to the air flow on-off triggering end is removed, the air flow on-off control end closes the air flow channel, and the adsorption cavity is in air-tight connection with the air exhaust pipeline; the hub is positioned between the hollow shaft and the rubber body and is respectively fixedly connected with the hollow shaft and the rubber body; the rubber body is annular, the sucking disc movement resistance reducing mechanism is fixedly arranged in the rubber body, the sucking disc movement resistance reducing mechanism is arranged along the radial direction of the rubber body, and the air suction end of the sucking cavity faces outwards; the hollow pipeline is located in the wheel hub, one end of the hollow pipeline is in fluid communication with the hollow shaft fixed connection, the other end of the hollow pipeline is in fluid communication with the suction pipe through the hollow pipeline, the sucker moving resistance reducing mechanism is fixedly connected with the suction pipe, the suction capacity of the device can be greatly improved, and the device is convenient to move.
In the negative pressure adsorption wheel, the two or more mechanisms for reducing the moving resistance of the suckers are uniformly distributed around the hub; each sucking disc movement resistance reducing mechanism is communicated with the same hollow shaft fluid through the hollow pipelines which are mutually independent.
The mechanism for reducing the moving resistance of the sucker comprises an airflow on-off structure body, wherein the airflow on-off structure body comprises a vacuum cavity and a valve body, a first end of the vacuum cavity is connected with a second end of the valve body in a sealing mode, the cross section area of an airflow channel in the vacuum cavity is larger than that of the airflow channel in the valve body, the airflow channel in the valve body is of a trapezoidal structure, the airflow channel in the valve body is gradually reduced from the second end to the first end, and the fluid channels in the valve body are slightly larger than the diameter of the cross section of the first end of the ejector rod.
In the mechanism for reducing the moving resistance of the sucker, the airflow on-off switch comprises an ejector rod and a spring, the second end of the ejector rod penetrates through the airflow channel in the vacuum cavity and extends into the adsorption cavity, and the first end of the ejector rod is positioned in the airflow channel in the valve body; the cross-sectional area of the second end of the ejector rod is smaller than that of the airflow channel in the vacuum cavity, and the cross-sectional area of the first end of the ejector rod is larger than that of the airflow channel in the vacuum cavity; the second end of the spring is connected with the first end of the ejector rod, and the first end of the spring is connected with the inner wall of the airflow channel in the valve body.
The mechanism for reducing the moving resistance of the sucker is characterized in that the first end of the spring is connected with the inner wall of the first end of the airflow channel in the valve body, an air exhaust pipeline is inserted into the valve body and is connected with the outer wall of the first end of the airflow channel in the valve body in a sealing mode, the first end of the air exhaust pipeline and the second end of the air exhaust pipeline are large in diameter and are in an open mode, the diameter of the air exhaust pipeline is small in the middle of the air exhaust pipeline, the second end of the air exhaust pipeline is an air inlet end, the first end of the air exhaust pipeline is an air outlet end, external threads matched with nuts are formed in the outer surface of the middle of the air exhaust pipeline, a gasket is arranged at the first end of the valve body, and the air exhaust pipeline is connected with the airflow.
The technical scheme of the invention achieves the following beneficial technical effects:
the invention mainly relates to a negative pressure adsorption wheel type mechanism, which reduces the matching between sucking disc moving resistance mechanisms through a sucking disc, when the sucking disc is used for adsorption on a non-horizontal surface, an ejector rod can move upwards through an adsorption cavity in the sucking disc when a device is used for adsorption, the adsorption cavity adsorbs a contacted wall surface, when the adsorption wheel is used for separation, air enters the inside of the adsorption cavity, the ejector rod also moves downwards at the moment, and a flow passage between a valve body and the inside of vacuum is cut off, so that the device does not have adsorption capacity at the moment, the moving resistance of the device can be reduced, the device can move only on the horizontal surface, can be reliably adsorbed and rotated on the non-horizontal surface, can be applied to the reliable adsorption and walking of a moving device on the non-horizontal surface, realizes various preset functions, reduces the moving resistance of the traditional adsorption mode, and obviously improves the moving speed, the flexibility of the carrier is increased, and the reliable adsorption and flexible control of the carrier are realized. Provides a new technical method for the safe and reliable movement of the carrier on the non-horizontal surface.
The air flow channel in the valve body is in a trapezoidal structure and gradually reduced from the second end to the first end, when the ejector rod moves upwards, under the action of the hollow shaft, as the atmospheric pressure in the hollow shaft is lower than the standard atmospheric pressure, external air is sucked into the hollow shaft from the second end of the air flow channel in the valve body, the air circulation is convenient, the device is ensured to have adsorption capacity, the negative pressure adsorption wheel can work normally, if the diameter of the air flow channel in the valve body is equal to the diameter of the cross section of the first end of the ejector rod, the spring retracts, when the cross section of the top of the ejector rod moves, the air in the adsorption cavity enters the hollow shaft from the air flow channel in the valve body, the air flow is not smooth, the flow speed is too low, the adsorption capacity of the device is reduced, the air flow channel in the valve body is designed to be in a trapezoidal structure, the, the air smoothly enters the hollow shaft, the adsorption capacity of the device is greatly improved, and the adsorption and the air discharge are convenient.
The first end cross-section of ejector pin and the first end contact department of vacuum cavity set up to the circular arc structure, and for sealing contact, when the device does not use, because the effect of spring, ejector pin and vacuum cavity are sealed, and the air that adsorbs the intracavity does not get into the inside of hollow shaft, and circular arc contact seal structure can block up the air to the outside, prevents to reveal for under the device does not use unoperated state, sealed effectual reaches the sealing performance optimization.
The bleed line sets up to both ends diameter great, and the inlet end of the less bleed line of middle diameter sets up that the diameter is great can guarantee to carry out sealing connection with the inside fluid passage's of valve body first end, prevent air leakage, the inlet end sets up the diameter great simultaneously, can reduce when the air enters into the bleed line, the resistance reduces, guarantee that the air is quick, unblocked entering, and it sets up great to give vent to anger the end diameter, can disperse gas, reduce gaseous lift, prevent too fast because of the gas flow rate, strike subsequent device, reduce the vibration that brings the device, prevent long-time vibration and cause the damage of device, the life of extension fixture.
The ladder sealing ring and the sucker sealing ring play a role in sealing, the anti-slip ring can increase the friction force between the wheel and the wall surface and prevent slipping, and the device can be suitable for various complex occasions and has a good sealing effect by the arrangement of the sucker sealing ring and the anti-slip ring.
Drawings
FIG. 1 is a schematic view of the mechanism for reducing the resistance to movement of the suction cup according to the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view of the structure of a perforated washer of the negative pressure suction wheel of the present invention.
The reference numbers in the figures denote: 1-hollow pipeline; 2-a mechanism for reducing the moving resistance of the sucker; 3-a rubber body; 4-a hollow shaft; 5-a hub; 6-step sealing ring; 7-a sucker; 8-end face sealing ring; 9-a top rod; 10-vacuum chamber; 11-a spring; 12-a gasket; 13-a nut; 14-an air extraction pipeline; 15-a valve body; 16-a perforated gasket; 17-anti-slip ring; 18-a suction cup sealing ring; 19-adsorption chamber.
Detailed Description
Example 1: a mechanism for reducing the moving resistance of a sucker comprises an airflow on-off structure body and an airflow on-off switch, wherein an airflow channel is arranged inside the airflow on-off structure body; the air flow on-off trigger end of the air flow on-off switch is positioned in the adsorption cavity 19 of the sucking disc 7, and the air flow on-off control end of the air flow on-off switch is positioned in the air flow channel; when external force is applied to the air flow on-off trigger end, the air flow on-off control end opens the air flow channel, and the adsorption cavity 19 is in fluid communication with the air exhaust pipeline 14 through the air flow channel; when the external force applied to the air flow on-off trigger end is removed, the air flow on-off control end closes the air flow channel and the adsorption cavity 19 is in air-tight connection with the air exhaust pipeline 14.
As shown in fig. 1, the airflow on-off structure body includes a vacuum cavity 10 and a valve body 15, a first end of the vacuum cavity 15 is hermetically connected with a second end of the valve body 15, a cross-sectional area of an airflow channel located in the vacuum cavity 10 is larger than that of the airflow channel located in the valve body 15, the airflow channel in the valve body 15 is in a trapezoidal structure, the airflow channel in the valve body 15 is gradually reduced from the second end to the first end, and fluid channels in the valve body 15 are slightly larger than a diameter of a cross section of the first end of the push rod 9.
The air flow on-off switch comprises a push rod 9 and a spring 11, the second end of the push rod 9 penetrates through an air flow channel in the vacuum cavity 10 and extends into the adsorption cavity 19, and the first end of the push rod 9 is positioned in the air flow channel in the valve body 15; the cross-sectional area of the second end of the ejector rod 9 is smaller than that of an airflow channel in the vacuum cavity 10, the first end of the ejector rod 9 is larger than that of the airflow channel in the vacuum cavity 10, the cross-sectional area of the first end of the ejector rod 9 is T-shaped, the joint of the ejector rod 9 and the first end of the vacuum cavity 10 is of an arc structure and is in sealing connection when in contact, the second end of the spring 11 is connected with the first end of the ejector rod 9, and the first end of the spring 11 is connected with the inner wall of the airflow channel in the valve body 15.
The first end of spring 11 and the first end inner wall connection of the airflow channel in the valve body 15, the inside of valve body 15 is pegged graft and is had gas extraction pipeline 14 and with the first end outer wall sealing connection of the airflow channel in the valve body 15, the first end of gas extraction pipeline 14 is great with the diameter of second end, for open form, and the gas extraction pipeline 14 diameter at its middle part is less, the second end of gas extraction pipeline 14 is the inlet end, its first end is the end of giving vent to anger, the external screw thread with nut 13 matched with is seted up to the surface of the middle part position of gas extraction pipeline 14, the first end of valve body 15 is provided with packing ring 12, gas extraction pipeline 14 passes through nut 13, packing ring 12 is with its and the airflow channel sealing connection in the.
As shown in fig. 3, the second end of the vacuum chamber 10 is hermetically connected with the suction cup 7 through the end face seal ring 8, the first end of the suction cup 7 is close to the stepped step cavity of the cross section of the central hole, the step cavity of the first end of the suction cup 7 is hermetically connected with the second end of the airflow channel in the vacuum chamber 10 through the step seal ring 6, the airflow channel in the vacuum chamber 10 is internally provided with a washer with holes 16, the second end of the ejector rod 9 is inserted into the central hole of the washer with holes 16, the second end of the suction cup 7 is provided with an adsorption chamber 19, the adsorption chamber 19 is the air suction end of the airflow channel in the airflow on-off structure body, the outer wall of the second end of the suction cup 19 and the inner wall of the adsorption chamber 19 are provided with an anti-skid ring 17 and.
Example two: a negative pressure adsorption wheel comprises a hollow shaft 4, a hollow pipeline 1, a rubber body 3, a hub 5 and a mechanism 2 for reducing the moving resistance of a sucker;
as shown in fig. 1-2, the mechanism 2 for reducing the moving resistance of the sucker comprises an airflow on-off structure body and an airflow on-off switch, wherein an airflow channel is arranged inside the airflow on-off structure body; the air flow on-off trigger end of the air flow on-off switch is positioned in the adsorption cavity 19 of the sucking disc 7, and the air flow on-off control end of the air flow on-off switch is positioned in the air flow channel; when external force is applied to the air flow on-off trigger end, the air flow on-off control end opens the air flow channel, and the adsorption cavity 19 is in fluid communication with the air exhaust pipeline 14 through the air flow channel; when the external force applied to the air flow on-off triggering end is removed, the air flow on-off control end closes the air flow channel and the adsorption cavity 19 is in air-tight connection with the air extraction pipeline 14; the hub 5 is positioned between the hollow shaft 4 and the rubber body 3 and is respectively fixedly connected with the hollow shaft 4 and the rubber body 3; the rubber body 3 is annular, the suction cup moving resistance reducing mechanism 2 is fixedly arranged in the rubber body 3, the suction cup moving resistance reducing mechanism 2 is arranged along the radial direction of the rubber body 3, and the suction end of the suction cavity 19 faces outwards; the hollow pipeline 1 is positioned in the hub 5, one end of the hollow pipeline 1 is fixedly connected with the hollow shaft 4 and is in fluid communication with the hollow shaft, and the other end of the hollow pipeline 1 is fixedly connected with the sucker movement resistance reducing mechanism 2 and is also in fluid communication with the air exhaust pipeline 14.
The air flow on-off structure body comprises a vacuum cavity 10 and a valve body 15, a first end of the vacuum cavity 15 is hermetically connected with a second end of the valve body 15, the cross section area of an air flow channel in the vacuum cavity 10 is larger than that of the air flow channel in the valve body 15, the air flow channel in the valve body 15 is of a trapezoid structure, the air flow channel in the valve body 15 is gradually reduced from the second end to the first end, and the fluid channels in the valve body 15 are slightly larger than the diameter of the cross section of the first end of the ejector rod 9.
As shown in fig. 1, the air flow on-off switch comprises a push rod 9 and a spring 11, wherein the second end of the push rod 9 passes through an air flow channel in the vacuum cavity 10 and extends into an adsorption cavity 19, and the first end of the push rod 9 is positioned in the air flow channel in the valve body 15; the cross sectional area of the second end of the ejector rod 9 is smaller than that of the airflow channel in the vacuum cavity 10, and the first end of the ejector rod 9 is larger than that of the airflow channel in the vacuum cavity 10; the second end of the spring 11 is connected with the first end of the mandril 9, and the first end of the spring 11 is connected with the inner wall of the airflow channel in the valve body 15. .
The first end of spring 11 and the first end inner wall connection of the airflow channel in the valve body 15, the inside of valve body 15 is pegged graft and is had gas extraction pipeline 14 and with the first end outer wall sealing connection of the airflow channel in the valve body 15, the first end of gas extraction pipeline 14 is great with the diameter of second end, for open form, and the gas extraction pipeline 14 diameter at its middle part is less, the second end of gas extraction pipeline 14 is the inlet end, its first end is the end of giving vent to anger, the external screw thread with nut 13 matched with is seted up to the surface of the middle part position of gas extraction pipeline 14, the first end of valve body 15 is provided with packing ring 12, gas extraction pipeline 14 passes through nut 13, packing ring 12 is with its and the airflow channel sealing connection in the.
The second end of the vacuum cavity 10 is connected with the sucker 7 in a sealing mode through the end face seal 8, the cross section of the first end of the sucker 7, which is close to the central hole, is a stepped step cavity, the step cavity of the first end of the sucker 7 is connected with the second end of an airflow channel in the vacuum cavity 10 in a sealing mode through the step seal ring 6, a perforated gasket 16 is arranged in the airflow channel in the vacuum cavity 10, the second end of a mandril 9 is inserted into the inside of the central hole of the perforated gasket 16, an adsorption cavity 19 is formed in the second end of the sucker 7, the adsorption cavity 19 is the air suction end of the airflow channel in the airflow on-off structure body, an anti-slip ring 17 and a sucker seal ring 18 are arranged on the outer wall of the second end of the sucker 19 and the inner.
The working principle is as follows: the hub 5 plays a supporting role, the rubber body 3 plays a role in damping and increasing friction force, the sucking disc moving resistance reducing mechanisms 2 are uniformly distributed and installed in the rubber body 3, the sucking disc moving resistance reducing mechanisms 2 are connected with the hollow shaft 4 through the hollow pipeline 1 and are in fluid conduction, negative pressure is always kept in the hollow shaft 4, when the adsorption cavity 19 on the outer surface of the negative pressure adsorption wheel is in contact with the wall surface, gas pushes the ejector rod 9 in the sucking disc moving resistance reducing mechanisms 2 to move upwards, at the moment, the spring 11 is stressed by the section pressure of the ejector rod 9, the spring 11 contracts, the section of the first end of the ejector rod 9 is separated from the vacuum cavity 10, the sucking disc 7 is communicated with the vacuum cavity 10 and the valve body 15, after the section of the first end of the ejector rod 9 is separated from the vacuum cavity 10, because the inside of the hollow shaft 4 is negative pressure, at the, will be inhaled by absorption chamber 19, then be discharged to the inside of hollow shaft 4 by air exhaust pipeline 14 for the air in sucking disc 7 is taken away and is formed the negative pressure, reduces sucking disc moving resistance mechanism 2 and possesses the adsorption efficiency.
When the adsorption cavity 19 on the outer surface of the negative pressure adsorption wheel is separated from being in contact with the wall surface, the ejector rod 9 loses the pressure on the wall surface, the radial force applied to the spring 11 disappears, so that the second end of the spring 11 pushes the ejector rod 9, the section of the first end of the ejector rod 9 is in contact with the fluid channel in the vacuum cavity 10, the suction cup 7 is communicated with the vacuum cavity 10 and the valve body 15, and the suction cup 7 is communicated with the external atmosphere. The mechanism 2 for reducing the moving resistance of the sucker is screwed and fixed with the hub 5 through a nut 13 and a gasket 12, the air exhaust pipeline 14 is in butt joint with the hollow pipeline 1, the vacuum cavity 10 is fixedly connected with the valve body 15 through a clamping groove, and the sucker 7 is fixedly connected with the vacuum cavity 10 through a clamping groove. The porous gasket 16 supports the ejector rod 9, and meanwhile, air flow in the vacuum cavity 10 can be guaranteed to be smooth. The step sealing ring 6 and the sucker sealing ring 18 play a role in sealing, the anti-slip ring 17 can increase the friction force between the wheel and the wall surface to prevent slipping, and the device can be suitable for various complex occasions through the arrangement of the sucker sealing ring 18 and the anti-slip ring 17 and has a good sealing effect.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications are possible which remain within the scope of the appended claims.
Claims (10)
1. A mechanism for reducing the moving resistance of a sucker is characterized by comprising an airflow on-off structure body and an airflow on-off switch, wherein an airflow channel is arranged inside the airflow on-off structure body; the air flow on-off trigger end of the air flow on-off switch is positioned in the adsorption cavity (19) of the sucker (7), and the air flow on-off control end of the air flow on-off switch is positioned in the air flow channel; when external force is applied to the airflow on-off trigger end, the airflow on-off control end opens the airflow channel, and the adsorption cavity (19) is in fluid communication with the air exhaust pipeline (14) through the airflow channel; when the external force applied to the air flow on-off triggering end is removed, the air flow on-off control end closes the air flow channel, and the adsorption cavity (19) is in air-tight connection with the air exhaust pipeline (14).
2. The mechanism for reducing the moving resistance of the sucker is characterized in that the air flow on-off structure body comprises a vacuum cavity (10) and a valve body (15), a first end of the vacuum cavity (15) is connected with a second end of the valve body (15) in a sealing mode, the cross-sectional area of an air flow channel in the vacuum cavity (10) is larger than that of the air flow channel in the valve body (15), the air flow channel in the valve body (15) is in a trapezoid structure, the air flow channel in the valve body (15) is gradually reduced from the second end to the first end, and the fluid channels in the valve body (15) are slightly larger than the diameter of the cross section of the first end of the ejector rod (9).
3. A mechanism for reducing moving resistance of a sucker as claimed in claim 2, wherein the air flow on-off switch comprises a push rod (9) and a spring (11), the second end of the push rod (9) passes through the air flow channel in the vacuum chamber (10) and extends into the suction chamber (19), the first end of the push rod (9) is located in the air flow channel in the valve body (15); the cross-sectional area of the second end of ejector rod (9) is less than in vacuum cavity (10) airflow channel's cross-sectional area, the first end of ejector rod (9) is greater than in vacuum cavity (10) airflow channel's cross-sectional area, the first end cross-sectional area of ejector rod (9) is T shape, ejector rod (9) with the junction of the first end of vacuum cavity (10) is the circular arc structure, and is sealing connection when the contact, the second end of spring (11) with the first end of ejector rod (9) is connected, the first end of spring (11) with in valve body (15) airflow channel inner wall connects.
4. The mechanism for reducing the moving resistance of the sucker as claimed in claim 3, wherein the first end of the spring (11) is connected with the inner wall of the first end of the airflow channel in the valve body (15), the inside of the valve body (15) is inserted with an air exhaust pipeline (14) and is hermetically connected with the outer wall of the first end of the airflow channel in the valve body (15), the first end and the second end of the air exhaust pipeline (14) have a larger diameter and are in an open form, the diameter of the air exhaust pipeline (14) in the middle of the air exhaust pipeline is smaller, the second end of the air exhaust pipeline (14) is an air inlet end, the first end of the air exhaust pipeline is an air outlet end, the outer surface of the middle of the air exhaust pipeline (14) is provided with an external thread matched with the nut (13), the first end of the valve body (15) is provided with a gasket (12), and the air exhaust pipeline (14) is provided with a nut (13, The gasket (12) connects it in a sealing manner with the gas flow channel in the valve body (15).
5. The mechanism for reducing the moving resistance of the sucker as claimed in claim 2, wherein the second end of the vacuum chamber (10) is connected with the sucker (7) in a sealing manner through the end face seal ring (8), the cross section of the first end of the sucker (7) close to the central hole is a step-shaped step cavity, the step cavity of the first end of the sucker (7) is connected with the second end of the airflow channel in the vacuum chamber (10) in a sealing manner through the step seal ring (6), a washer with holes (16) is arranged in the airflow channel in the vacuum chamber (10), the second end of the ejector rod (9) is inserted into the central hole of the washer with holes (16), the second end of the sucker (7) is provided with an adsorption chamber (19), and the adsorption chamber (19) is the air suction end of the airflow channel in the airflow on-off structure body, and an anti-skid ring (17) and a sucker sealing ring (18) are arranged on the outer wall of the second end of the sucker (19) and the inner wall of the suction cavity (19), and the sucker sealing ring (18) is positioned on the outer side of the anti-skid ring (17).
6. A negative pressure adsorption wheel is characterized by comprising a hollow shaft (4), a hollow pipeline (1), a rubber body (3), a hub (5) and a mechanism (2) for reducing the moving resistance of a sucker;
the mechanism (2) for reducing the moving resistance of the sucker comprises an airflow on-off structure body and an airflow on-off switch, wherein an airflow channel is arranged inside the airflow on-off structure body; the air flow on-off trigger end of the air flow on-off switch is positioned in the adsorption cavity (19) of the sucker (7), and the air flow on-off control end of the air flow on-off switch is positioned in the air flow channel; when external force is applied to the airflow on-off trigger end, the airflow on-off control end opens the airflow channel, and the adsorption cavity (19) is in fluid communication with the air exhaust pipeline (14) through the airflow channel; when the external force applied to the air flow on-off triggering end is removed, the air flow on-off control end closes the air flow channel, and the adsorption cavity (19) is in air-tight connection with the air exhaust pipeline (14);
the hub (5) is positioned between the hollow shaft (4) and the rubber body (3) and is respectively fixedly connected with the hollow shaft (4) and the rubber body (3); the rubber body (3) is annular, the sucking disc moving resistance reducing mechanism (2) is fixedly installed in the rubber body (3), the sucking disc moving resistance reducing mechanism (2) is installed and arranged along the radial direction of the rubber body (3), and the air suction end of the sucking cavity (19) faces outwards;
the hollow pipeline (1) is located in the hub (5), one end of the hollow pipeline (1) is fixedly connected with the hollow shaft (4) and is communicated with fluid, and the other end of the hollow pipeline (1) is fixedly connected with the sucker movement resistance reducing mechanism (2) and is also communicated with fluid of the air exhaust pipeline (14).
7. A negative pressure suction wheel according to claim 6, wherein the suction cup movement resistance reducing mechanisms (2) are two or more and are evenly distributed around the hub (5); each sucker movement resistance reducing mechanism (2) is communicated with the same hollow shaft (4) through the mutually independent hollow pipeline (1).
8. The negative pressure adsorption wheel according to claim 6, wherein the air flow on-off structure body comprises a vacuum cavity (10) and a valve body (15), a first end of the vacuum cavity (15) is hermetically connected with a second end of the valve body (15), the cross-sectional area of the air flow channel in the vacuum cavity (10) is larger than that of the air flow channel in the valve body (15), the air flow channel in the valve body (15) is in a trapezoid structure, the air flow channel in the valve body (15) is gradually reduced from the second end to the first end, and the fluid channels in the valve body (15) are slightly larger than the diameter of the cross-section of the first end of the ejector rod (9).
9. The negative pressure adsorption wheel of claim 8, wherein the air flow on-off switch comprises a push rod (9) and a spring (11), the second end of the push rod (9) passes through the air flow channel in the vacuum cavity (10) and extends into the adsorption cavity (19), and the first end of the push rod (9) is located in the air flow channel in the valve body (15); the cross sectional area of the second end of the ejector rod (9) is smaller than that of the airflow channel in the vacuum cavity (10), and the cross sectional area of the first end of the ejector rod (9) is larger than that of the airflow channel in the vacuum cavity (10); the second end of the spring (11) is connected with the first end of the ejector rod (9), and the first end of the spring (11) is connected with the inner wall of the airflow channel in the valve body (15).
10. The negative-pressure adsorption wheel according to claim 9, wherein the first end of the spring (11) is connected to the inner wall of the first end of the airflow channel in the valve body (15), an air exhaust pipeline (14) is inserted into the valve body (15) and is hermetically connected to the outer wall of the first end of the airflow channel in the valve body (15), the first end and the second end of the air exhaust pipeline (14) have a larger diameter and are in an open form, the diameter of the air exhaust pipeline (14) in the middle of the air exhaust pipeline is smaller, the second end of the air exhaust pipeline (14) is an air inlet end, the first end of the air exhaust pipeline is an air outlet end, the outer surface of the middle of the air exhaust pipeline (14) is provided with an external thread matched with the nut (13), the first end of the valve body (15) is provided with a gasket (12), and the air exhaust pipeline (14) is provided with an air outlet end through the nut (13), The gasket (12) connects it in a sealing manner with the gas flow channel in the valve body (15).
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| CN112855737B (en) | 2022-11-18 |
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