CN110645258B

CN110645258B - Sucking disc convenient to protect heavy object

Info

Publication number: CN110645258B
Application number: CN201910958094.6A
Authority: CN
Inventors: 楼玲燕
Original assignee: Individual
Current assignee: Zhejiang Hechang Socks Technology Co ltd
Priority date: 2018-05-22
Filing date: 2018-05-22
Publication date: 2021-02-12
Anticipated expiration: 2038-05-22
Also published as: CN108730316A; CN110778593B; CN108730316B; CN110778593A; CN110645258A

Abstract

The invention belongs to the technical field of suckers, and particularly relates to a sucker convenient for protecting a heavy object, which comprises a first spring, a slider spring, a limit block spring, a third guide block, a fourth guide block, a winding cavity, a hanging mechanism and the like, wherein the sucker can pull a hook to enable an air exhaust piston to exhaust partial gas in the sucker into an air exhaust cylinder, so that the sucker can be easily adsorbed on an object; in addition, with the increase of the weight of the suspended object, the adsorption force of the sucker is increased, so that the sucker is better suitable for suspension under different conditions; when the suspended heavy object is close to the limit suspended weight of the sucker, the stretching out of the signal strip can remind a user that the heavier object cannot be suspended, and the sucker is prevented from falling off and the suspended object is prevented from falling to the ground. When the suspended heavy object exceeds the limit suspended weight of the sucking disc, the suspension mechanism can prevent the suspended object from quickly falling to the ground, so that the heavy object is protected.

Description

Sucking disc convenient to protect heavy object

Technical Field

The invention belongs to the technical field of suckers, and particularly relates to a sucker convenient for protecting a heavy object.

Background

The traditional sucking disc at present is a pendant that utilizes the difference of inside and outside atmospheric pressure, adsorbs on the object, perhaps is a instrument of snatching the object. The weight of the weight which can be hung by the traditional suction cup is determined by the size of the suction cup and the suction force of the suction cup, and when the traditional suction cup is sucked on an object, the weight of the weight which can be hung by the traditional suction cup is also determined. However, the user can easily forget the maximum hanging weight marked on the suction cup in the long-term use process, and even the maximum hanging weight marked on the suction cup adsorbed inside some mechanisms is not easy to see; when a user hangs an overweight object on the suction cup, the overweight object can separate the sucked suction cup due to the fact that the overweight object exceeds the maximum weight which can be hung by the suction cup, and the suction cup and the overweight object fall on the ground; when an overweight item is more valuable, the heavy falling of the item on the bottom surface is easily damaged. In addition, for the suckers adsorbed in some mechanisms, once the suckers adsorbed are separated after being suspended by overweight objects, the suckers can be separated in the mechanisms, so that certain hidden danger can be caused to the operation in the mechanisms; the sucker falling off the inside of the mechanism is adsorbed inside the mechanism again, and the mechanism needs to be disassembled, so that certain trouble is caused. In order to effectively enlarge the hanging weight of the sucker and remind the user when the weight of the object is close to the limit hanging weight of the sucker, the sucker which can enlarge the hanging weight of the sucker and remind the user when the user hangs the overweight object needs to be designed.

The invention designs a sucker convenient for protecting heavy objects, which solves the problems.

Disclosure of Invention

In order to solve the defects in the prior art, the invention discloses a sucker convenient for protecting heavy objects, which is realized by adopting the following technical scheme.

The utility model provides a sucking disc convenient to protect heavy object which characterized in that: it comprises an L-shaped shell, a sucker, an unlocking bar, an air suction cylinder, an air suction piston, a pull rod, a pull plate spring, a first steel wire rope, a fixed pulley, a hanging plate, a first slide block, a first guide block, a first spring, a slide block spring, a signal bar, a second guide block, a second spring, a limiting block spring, an extrusion block spring, a cylinder groove, a rod hole, a sliding cavity and a pulley cavity, the device comprises a hanging plate sliding groove, an unlocking through groove, a sliding block groove, a first guide groove, a signal through groove, a second guide groove, an extrusion notch, an inclined plane, a limiting block groove, an extrusion block groove, a first trigger block, a third guide block, a third spring, a second trigger block, a fourth guide block, a fourth spring, a first trigger block sliding groove, a third guide groove, a second trigger block sliding groove, a fourth guide groove, a sharp corner, a winding cavity, a limiting strip sliding groove, a suspension sliding groove and a suspension mechanism, wherein the L-shaped shell consists of a transverse shell and a vertical shell; a cylindrical groove is formed in the end face of one end of the transverse shell; a sliding cavity and a pulley cavity are formed in the transverse shell; the sliding cavity is positioned between the pulley cavity and the barrel groove; the pulley cavity is communicated with the sliding cavity; a rod hole is formed between the sliding cavity and the cylinder groove; a hanging plate sliding groove is formed in the end face of one end of the vertical shell; the hanging plate sliding groove is communicated with the pulley cavity; two unlocking through grooves are symmetrically formed in the two side faces of the hanging plate sliding groove; the unlocking through groove is close to the pulley cavity; two first guide grooves are symmetrically formed in two side faces of each unlocking through groove; two sliding block grooves are symmetrically arranged on two side surfaces of the hanging plate sliding groove; the sliding block groove is close to the bottom of the hanging plate sliding groove; a signal through groove is formed from the side groove surface of each sliding block groove to the side shell surface of the vertical shell; two second guide grooves are symmetrically formed in the two side faces of each signal through groove; for the two slider grooves, a first trigger block sliding groove is formed in the bottom groove surface of one slider groove; two third guide grooves are symmetrically formed in two sides of the first trigger block sliding groove; a second trigger block sliding groove is formed in the side groove surface at the lower end of the first trigger block sliding groove; the second trigger block chute is communicated with the hanging plate chute; two sides of the second trigger block sliding groove are symmetrically provided with two fourth guide grooves.

The air pumping cylinder is arranged in the cylinder groove; the sucking disc is arranged on one end of the air pumping cylinder; the air extraction piston is arranged in the air extraction cylinder and slides in the air extraction cylinder; one end of the pull rod is arranged on the air exhaust piston, and the other end of the pull rod penetrates through the rod hole and is provided with a pull plate; the pulling plate is positioned in the sliding cavity; one end of each of the two pull plate springs is arranged on the plate surface of the pull plate far away from the pull rod, and the other end of each of the two pull plate springs is arranged on the side surface of the sliding cavity; the pulling plate slides in the sliding cavity through a pulling plate spring; the fixed pulley is arranged in the pulley cavity through a shaft; the hanging plate is arranged in the hanging plate sliding groove; one end of the first steel wire rope is arranged at the middle position of the plate surface of the pulling plate far away from the pulling rod, and the other end of the first steel wire rope is connected with the hanging plate through the fixed pulley; two limiting block grooves are symmetrically formed in the two sides of one end, close to the first steel wire rope, of the hanging plate; two side surfaces of the hanging plate provided with the limiting block grooves are symmetrically provided with two extrusion block grooves; the extrusion block groove is positioned at the lower side of the limiting block groove; the two limiting blocks are respectively arranged in the two limiting block grooves; the two extrusion blocks are respectively arranged in the two extrusion block grooves; one end of each of the two limiting block springs is respectively arranged on the two limiting blocks, and the other end of each limiting block spring is arranged on the bottom groove surface of the corresponding limiting block groove; the limiting block slides in the limiting block groove through a limiting block spring; one end of each limiting block, which is far away from the limiting block spring, is provided with an inclined plane; one end of each of the two extrusion block springs is respectively arranged on the two extrusion blocks, and the other end of each of the two extrusion block springs is arranged on the bottom groove surface of the corresponding extrusion block groove; the extrusion block slides in the extrusion block groove through an extrusion block spring; one end of each extrusion block, which is far away from the extrusion block spring, is provided with an inclined surface; the side surface of the hanging plate opposite to the sliding groove of the second trigger block is provided with a limiting sliding groove; the limiting strip sliding groove is positioned at the lower side of the extrusion block groove; a winding cavity is formed in the hanging plate; the winding cavity is positioned between the limiting strip sliding groove and the extrusion block groove; the lower plate surface of the hanging plate is provided with a hanging chute; the suspension sliding groove is respectively communicated with the limiting strip sliding groove and the winding cavity; the suspension mechanism is arranged in the winding cavity, the limiting strip sliding groove and the suspension sliding groove.

The two unlocking bars are respectively arranged in the two unlocking through grooves; two first guide blocks are symmetrically arranged on two sides of each unlocking bar, and a first spring is arranged on each first guide block; the two first guide blocks are respectively positioned in the two first guide grooves at the corresponding unlocking through grooves; one end of each first spring, which is not connected with the first guide block, is arranged on the groove surface of the corresponding first guide groove; the first guide blocks slide in the corresponding first guide grooves through first springs.

The two signal strips are respectively arranged in the two signal through grooves; two second guide blocks are symmetrically arranged on two sides of each signal strip, and a second spring is arranged on each of the two second guide blocks; the two second guide blocks are respectively positioned in the two second guide grooves at the corresponding signal through grooves; one end of each second spring, which is not connected with the second guide block, is arranged on the groove surface of the corresponding second guide groove; the second guide blocks slide in the corresponding second guide grooves through second springs; the end of each signal strip, which is far away from the second spring, is provided with a slope.

The two first sliding blocks are respectively arranged in the two sliding block grooves; one end of each of the two slider springs is respectively arranged on the two first sliders, and the other end of each of the two slider springs is respectively arranged on the bottom groove surfaces of the two slider grooves; the first sliding block slides in the sliding block groove through a sliding block spring; an end face of one end, far away from the slider spring, of each first slider is provided with an extrusion notch.

The two extrusion blocks are respectively matched with the two extrusion notches; the two limiting blocks are respectively matched with the two unlocking bars; the two first sliding blocks are respectively matched with the two signal strips.

The first trigger block is arranged in the first trigger block sliding groove; two third guide blocks are symmetrically arranged on two sides of the first trigger block; the two third guide blocks are respectively positioned in the two third guide grooves; one end of each of the two third springs is respectively installed on the two third guide blocks, and the other end of each of the two third springs is installed on the groove surface of the corresponding third guide groove; the two third springs are respectively positioned in the corresponding third guide grooves; the third guide block slides in the third guide groove through a corresponding third spring; the second trigger block is arranged in the second trigger block sliding groove; two fourth guide blocks are symmetrically arranged on two sides of the second trigger block; the two fourth guide blocks are respectively positioned in the two fourth guide grooves; one end of each of the two fourth springs is respectively installed on the two fourth guide blocks, and the other end of each of the two fourth springs is installed on the groove surface of the corresponding fourth guide groove; the two fourth springs are respectively positioned in the corresponding fourth guide grooves; the fourth guide block slides in the fourth guide groove through a corresponding fourth spring; one end of the first trigger block, which is far away from the sliding block slot, is provided with an inclined plane; one end of the second trigger block, which is close to the first trigger block sliding groove, is provided with an inclined plane, and the other end is provided with a sharp corner; the first sliding block is matched with the first trigger block; the inclined plane on the first trigger block is matched with the inclined plane on the second trigger block.

The suspension mechanism comprises a hook, a winding wheel, a suspension block, a limiting strip, a limiting bulge, a suspension strip, a limiting strip spring, a connecting block, a volute spiral spring, a winding shaft, a second steel wire rope and a winding groove, wherein the winding shaft is arranged between two side surfaces of the winding cavity; the winding wheel is arranged on the outer circular surface of the winding shaft; the outer circle surface of the winding wheel is provided with a winding groove; one end of the scroll spring is arranged on the winding shaft, and the other end of the scroll spring is arranged on the side surface of the winding wheel through a connecting block; the winding wheel and the scroll spring are both positioned in the winding cavity; one end of the second steel wire rope is arranged on the winding groove in a winding mode, and the other end of the second steel wire rope is provided with a suspension block; one end of the suspension strip is arranged on the side surface of the suspension block far away from the second steel wire rope, and the other end of the suspension strip is provided with a hook; the suspension block and the suspension bar are both positioned in the suspension sliding groove; the suspension block slides in the suspension chute; the limiting strip is arranged in the limiting strip sliding groove; the side surface of the limiting strip is provided with two limiting bulges; the two limiting bulges are matched with the hanging block; the two limiting bulges are matched with the hanging sliding groove; two limiting strip springs are symmetrically arranged on the side surface of the limiting strip far away from the limiting bulge; one end of each limiting strip spring, which is not connected with the limiting strip, is arranged on the groove surface of the limiting strip sliding groove; the limiting strip slides in the limiting strip sliding groove through a limiting strip spring; one end of the limiting strip, which is close to the notch of the limiting strip sliding groove, is provided with an inclined plane; the inclined plane on the limiting strip is matched with the sharp corner on the second trigger block.

As a further improvement of the present technique, the pull plate is located at the side of the slide cavity where the rod hole is opened when the pull plate spring is uncompressed.

As a further improvement in the present technique, the extraction piston is located at the end of the extraction cylinder where the suction cup is mounted when the leaf spring is uncompressed.

As a further improvement of the technology, when the pulling plate spring is not compressed, one end of the limiting block with the inclined plane is positioned in the limiting block groove, and the limiting block spring is in a compressed state.

As a further improvement of the present technique, when the leaf spring is not compressed, the end of the pressing block having the inclined surface is located in the pressing block groove, and the pressing block spring is in a compressed state.

As a further improvement in the present technique, the end of the signal strip having the ramp surface is located in the slider slot when the second spring is uncompressed.

As a further improvement of the technology, when the first spring is not compressed, a distance is formed between one end, close to the hanging plate sliding groove, of the unlocking bar and the hanging plate sliding groove, and one end, far away from the hanging plate sliding groove, of the unlocking bar extends out of the vertical shell.

As a further improvement of the technology, when the third spring is not compressed, one end of the first trigger block penetrates out of the first trigger block sliding groove; when the fourth spring is not compressed, one end of the second trigger block with the inclined plane is positioned in the sliding groove of the first trigger block.

As a further improvement of the technology, when the spacing strip spring is not compressed, the two spacing protrusions are positioned in the suspension sliding groove.

As a further improvement of the present technology, the above-mentioned second wire rope is wound on the winding wheel 10 to 15 turns.

According to the invention, the hanging plate can be pulled by a steel wire rope to move towards the fixed pulley; the pulling plate drives the air extracting piston to move towards the direction of the fixed pulley through the pulling rod.

The pull plate spring can enable the pull plate to move and reset; the limiting block spring can enable the limiting block to move and reset; the extrusion block spring can make the extrusion block move and reset; the slider spring can make the first slider move and reset. The unlocking bar can slide in the unlocking through groove, so that the unlocking bar can drive the corresponding first guide block to slide in the first guide groove, and the first spring can enable the first guide block to move and reset.

In the invention, two first sliding blocks are respectively matched with two signal strips, one end of each signal strip, which is far away from a second spring, is provided with an inclined plane, and when the second spring is not compressed, one end of each signal strip, which is provided with the inclined plane, is positioned in a sliding block groove; then when the first sliding block moves towards the direction of the sliding block spring, the first sliding block can extrude the inclined plane of the signal strip, and then the signal strip extends out of the L-shaped shell under the extrusion force. The signal strip can slide in the signal through groove, and then the signal strip can drive corresponding second guide block and slide in the second guide slot, and the second spring can make the second guide block remove and reset.

According to the invention, two limiting blocks are respectively matched with two unlocking strips, when a first spring is not compressed, a distance is formed between one end, close to the hanging plate sliding groove, of each unlocking strip and the hanging plate sliding groove, and one end, far away from the hanging plate sliding groove, of each unlocking strip extends out of the vertical shell; the user can stretch out the one end of vertical casing through pressing the unlocking strip for the unlocking strip is released the stopper from unblock logical groove. The effect that the stopper has the inclined plane is that, when the link plate drove the stopper and moves down, the stopper that is arranged in the logical groove of unblock can break away from in the logical groove of unblock automatically under the effect on inclined plane.

The two extrusion blocks are respectively matched with the two extrusion notches in such a way that when the extrusion blocks are positioned at the sliding block groove positions and are opposite to the corresponding extrusion notches, the extrusion block springs in a compression state can enable the extrusion blocks to be rapidly inserted into the extrusion notches, the hanging plate continues to drive the extrusion blocks to move downwards, the extrusion blocks can extrude the first sliding blocks, and then the first sliding blocks move downwards along with the extrusion blocks. The extrusion block has the effect of inclined plane and is that when the link plate drives the extrusion block upward movement, the extrusion block that is arranged in the slider groove can break away from in the slider groove automatically under the effect of inclined plane.

First slider cooperatees with first trigger block, and the inclined plane on the first trigger block cooperatees with the inclined plane on the second trigger block, and the inclined plane on the spacing is with the closed angle matched with effect on the second trigger block is: after the first sliding block extrudes the first trigger block, the first trigger block moves towards the direction far away from the first sliding block; the inclined plane on the first trigger block extrudes the inclined plane on the second trigger block, and the second trigger block moves towards the direction far away from the first trigger block under the action of the inclined plane; at the moment, the sharp corner on the second trigger block extending out of the second trigger block sliding groove extrudes the inclined surface on the limiting strip, and the limiting strip moves towards the direction of the limiting strip spring under the action of the inclined surface.

According to the invention, the first trigger block can drive the corresponding third guide block to slide in the third guide groove, and the third spring can enable the third guide block to move and reset; the second trigger block can drive the corresponding fourth guide block to slide in the fourth guide groove, and the fourth spring can enable the fourth guide block to move and reset; the limiting strip spring can enable the limiting strip to move and reset.

Two spacing archs cooperate with the hanging block, and two spacing archs are with hanging spout matched with effect and being: on one hand, when the limiting strip spring is not compressed, the two limiting bulges are positioned in the hanging sliding groove, and the hanging block is limited by the two limiting bulges; on the other hand, after the spacing spring is compressed, the spacing strip moves the two spacing protrusions to the direction of the spacing spring, the two spacing protrusions are separated from the hanging sliding groove, and then the hanging block is not limited by the two spacing protrusions.

In the invention, the winding shaft is fixed, and the winding wheel can rotate around the axis of the winding shaft; the spiral spring may rotationally reset the winding wheel such that the second wire rope is wound again.

The design that the second steel wire rope is wound on the winding wheel for 10 to 15 circles is that the second steel wire rope wound for 10 to 15 circles can ensure that a heavy object has enough falling space, so that the steel wire rope can still pull the heavy object when the heavy object falls on the ground.

When the hook is not used for hanging a heavy object, the pulling plate spring is not compressed, and the pulling plate is positioned at the side surface of the sliding cavity, which is provided with the rod hole; the air extraction piston is positioned at one end of the air extraction cylinder, which is provided with the sucker; one end of the limiting block with the inclined plane is positioned in the limiting block groove, and the limiting block spring is in a compressed state; one end of the extrusion block with the inclined plane is positioned in the extrusion block groove, and the extrusion block spring is in a compressed state.

When the sucker needs to be adsorbed on an object, a user presses the sucker on the smooth surface of the object and then pulls the hook downwards; the hook drives the pulling plate to move towards the direction of the pulling plate spring through the hanging plate and the first steel wire rope, the pulling plate spring is compressed, and the pulling plate drives the air extraction piston to move towards the direction of the pulling plate spring through the pulling rod; during the movement of the air exhaust piston, part of air in the suction cup is sucked into the air exhaust cylinder; the inside and the outside of the sucker have pressure difference, and the sucker is adsorbed on an object under the action of atmospheric pressure; in the process that the limiting block moves downwards along with the hanging plate, when the limiting block is located at the unlocking through groove, the limiting block spring in a compressed state can enable the limiting block to be rapidly inserted into the unlocking through groove, so that the limiting block limits the hanging plate, and the hanging plate cannot move upwards; finally, the sucker is adsorbed on the object and cannot fall off.

After a weight is hung on the hook, the hook drives the hanging plate to move downwards under the action of the gravity of the weight, the hanging plate continuously drives the pull plate to move towards the pull plate spring through the steel wire rope, the pull plate spring is continuously compressed, and the pull plate drives the air exhaust piston to continuously move towards the pull plate spring through the pull rod; during the movement of the air extracting piston, the other part of the air in the sucking disc is sucked into the air extracting cylinder, and the adsorption force of the sucking disc is increased. In the process that the hanging plate moves downwards, the hanging plate drives the limiting block to move downwards, and the limiting block positioned in the unlocking through groove can automatically separate from the unlocking through groove under the action of the inclined plane of the limiting block; one end of the limiting block with the inclined plane is extruded into the limiting block groove, and the limiting block spring is in a compressed state again. Along with the weight of heavy object continues to increase, the gas of sucking in the pump bowl can be more and more, and then the adsorption affinity of sucking disc can be bigger and bigger, and the sucking disc still is adsorbed on the object and can not drop.

When the weight of the weight reaches a certain amount, in the process that the extrusion block moves downwards along with the hanging plate, when the extrusion block is positioned at the position of the sliding block groove and is opposite to the corresponding extrusion notch, the extrusion block spring in a compressed state can enable the extrusion block to be quickly inserted into the extrusion notch; when the weight along with the heavy object continues to increase, the link plate continues to drive the extrusion piece downstream, and the first slider of extrusion piece extrusion, and then first slider moves down along with the extrusion piece.

When the weight of the heavy object is close to the maximum adsorption force of the sucker, the hanging plate continues to drive the extrusion block to move downwards, and the first sliding block moves downwards to be close to the bottom of the sliding block groove along with the extrusion block; in the process that the first sliding block moves to the position close to the bottom of the sliding block groove, the first sliding block can extrude the inclined plane of the signal strip, the signal strip further extends out of the L-shaped shell under the extrusion force, and the second spring is compressed. When the user sees that the signal strip extends out of the L-shaped shell, the user knows that the weight of the heavy object is close to the maximum hanging weight allowed by the suction cup, and the user can not hang the heavier heavy object any more. The design can avoid the maximum hanging weight which is allowed by the user to be hung and exceeds the sucking disc, thereby preventing the sucking disc from falling off and preventing heavy objects from falling on the bottom surface and protecting the heavy objects. In addition, the suction force of the suction cup can be adjusted according to the hanging weight within the maximum hanging weight range allowed by the suction cup, so that the suction cup can be better suitable for hanging under different conditions.

When a user does not see the extension of the signal bar due to negligence and continues to increase the hanging weight or directly hangs a heavy object which exceeds the maximum hanging weight allowed by the suction cup, the hanging plate drives the extrusion block to move downwards to the limit position, and the first sliding block moves downwards along with the extrusion block to the bottom of the sliding block groove; in the process, the first slider extrudes the first trigger block, the first trigger block moves towards the direction far away from the first slider, the first trigger block drives the corresponding third guide block to move towards the direction far away from the first slider, and the third spring is compressed; the inclined plane on the first trigger block extrudes the inclined plane on the second trigger block, the second trigger block moves towards the direction far away from the first trigger block under the action of the inclined plane, the second trigger block drives the corresponding fourth guide block to move towards the direction far away from the first trigger block, and the third spring is compressed. At the moment, the second trigger block extends out of the second trigger block sliding groove, the sharp corner on the second trigger block extending out of the second trigger block sliding groove just extrudes the inclined surface on the limiting strip, the limiting strip moves towards the limiting strip spring under the action of the inclined surface, and the limiting strip spring is compressed; the limiting strip drives the two limiting bulges to move towards the direction of the limiting strip spring, the two limiting bulges are separated from the hanging sliding groove, and then the hanging block is not limited by the two limiting bulges any more. The weight pulls the suspension block to move downwards through the hook and the suspension strip under the action of gravity; the suspension block drives the second wire rope to move downward, so that the second wire rope wound around the winding wheel is released, the winding wheel starts to rotate, and the spiral spring starts to be compressed.

When the weight is ready to fall downwards, the volute spiral spring is in an uncompressed state at the moment when the second steel wire rope is released, and at the moment, the weight is only subjected to self gravity; in the process that the weight falls downwards, the second steel wire rope is gradually released, the spiral spring is gradually compressed, and the spiral spring is also more and more difficult to compress along with the release of the second steel wire rope; in the process that the volute spiral spring is gradually compressed, the force of the second steel wire rope for pulling the weight is increased, and when the pulling force is larger than the gravity, the dropping speed of the weight is reduced. When the heavy object falls to the position close to the ground, the falling speed of the heavy object is slowed down, so that the heavy object falling to the ground can not cause great damage to the heavy object, the heavy object is protected, and physical damage caused by the heavy object falling to the ground is avoided.

When the suspended heavy object is not suspended on the hook any more, the winding wheel rapidly rewinds the second steel wire rope on the winding wheel under the reset force of the volute spiral spring, and the second steel wire rope pulls the suspension block to recover to the original position again in the winding process of the second steel wire rope. Under the reset action of a pulling plate spring, the pulling plate moves towards the direction of the sucker, and the pulling plate drives the hanging plate to move upwards through a first steel wire rope; when the hanging plate drives the extrusion block to move upwards, the extrusion block positioned in the sliding block groove can automatically separate from the sliding block groove under the action of the inclined surface of the extrusion block, one end of the extrusion block with the inclined surface is extruded into the extrusion block groove, and the extrusion block spring is in a compressed state again; when the link plate drives the stopper rebound, when the extrusion piece is located the logical groove position department of unblock, the stopper spring that is in under the compression state makes the stopper insert the unblock fast and leads to the groove, and the stopper is spacing with the link plate, and the link plate will unable rebound, and the sucking disc is still adsorbed on the object. In the process that the hanging plate moves upwards, the limiting strip sliding groove extrudes the inclined surface of the sharp corner on the second trigger block, and under the action of the inclined surface of the sharp corner, the second trigger block is separated from the limiting strip sliding groove, so that the second trigger block does not extrude the limiting strip any more; under the reset action of the limiting strip spring, the limiting strip is restored to the original position; the limiting belt drives the two limiting bulges to recover to the original positions, and the two limiting bulges limit the suspension block again. Under the reset action of the slider spring, the first slider moves to the original position; under the reset action of the second spring, the second guide block drives the signal strip to restore to the original position; under the reset action of the third spring, the third guide block drives the first trigger block to return to the original position; under the reset action of the fourth spring, the fourth guide block drives the second trigger block to restore to the original position.

When the sucker needs to be taken away, a user can push the unlocking strip out of one end of the vertical shell by pressing the unlocking strip, so that the limiting block is pushed out of the unlocking through groove by the unlocking strip, and the first spring is compressed; when the limiting block is separated from the unlocking through groove, the limiting block does not limit the hanging plate any more, and the pulling plate drives the hanging plate to return to the original position through the first steel wire rope under the reset action of the pulling plate spring; the air in the air pumping cylinder is completely pushed back to the sucker by the air pumping piston, so that the air pressure in the sucker is the same as the external atmospheric pressure, and a user can easily take up the sucker. Under the reset action of the first spring, the first guide block drives the unlocking bar to restore to the original position.

Compared with the traditional sucking disc technology, the invention can pull the hook to enable the air exhaust piston to exhaust part of air in the sucking disc into the air exhaust cylinder, so that the sucking disc is easy to adsorb an object; in addition, with the increase of the weight of the suspended object, the adsorption force of the sucker is increased, so that the sucker is better suitable for suspension under different conditions; when the suspended heavy object is close to the limit suspended weight of the sucker, the stretching out of the signal strip can remind a user that the heavier object cannot be suspended, and the sucker is prevented from falling off and the suspended object is prevented from falling to the ground. When the suspended heavy object exceeds the limit suspended weight of the sucking disc, the suspension mechanism can prevent the suspended object from quickly falling to the ground, so that the heavy object is protected. The invention has simple structure and better use effect.

Drawings

Fig. 1 is an overall schematic view of the suction cup.

Fig. 2 is a schematic perspective view of the suction cup as a whole.

Fig. 3 is a schematic view of the overall cross-section of the suction cup.

Fig. 4 is a schematic side sectional front view of the suction cup as a whole.

Fig. 5 is an enlarged (first) view of the whole side section of the sucker.

Fig. 6 is a partially enlarged (second) view of the whole side section of the sucker.

Fig. 7 is a schematic sectional view (one) of an L-shaped housing.

Fig. 8 is a schematic sectional view (two) of the L-shaped housing.

Fig. 9 is a schematic sectional view (iii) of the L-shaped housing.

Fig. 10 is a partially enlarged (one) schematic view of the cross section (three) of the L-shaped housing.

Fig. 11 is a partially enlarged view (ii) of the cross section (iii) of the L-shaped housing.

Figure 12 is a schematic view of the suction cup installation.

Fig. 13 is a schematic view of the first guide block installation.

Fig. 14 is a schematic view of a slider spring installation.

Fig. 15 is a schematic front view of the first trigger block and the second trigger block.

Fig. 16 is a third guide block installation schematic.

Fig. 17 is a fourth guide block installation schematic.

Fig. 18 is a drawing of a pull plate installation.

FIG. 19 is a schematic side sectional front view of the hanging plate.

Fig. 20 is a partially enlarged front view of the hanger plate side section.

FIG. 21 is a front view of the hanging plate.

FIG. 22 is a sectional view (I) of the hanging plate.

Fig. 23 is a schematic sectional view (two) of the hanging plate.

FIG. 24 is a schematic view of a stopper and a pressing block.

Fig. 25 is a schematic view of a suspension mechanism.

FIG. 26 is a schematic view of a scroll spring installation.

Fig. 27 is a schematic view of the structure of the spacing strip.

Number designation in the figures: 1. an L-shaped housing; 2. a suction cup; 3. unlocking the locking bar; 4. hooking; 5. an air pumping cylinder; 6. an air extraction piston; 7. a pull rod; 8. pulling a plate; 9. a leaf spring; 10. a first wire rope; 12. a fixed pulley; 13. hanging the plate; 14. a first slider; 15. a first guide block; 16. a first spring; 17. a slider spring; 18. a signal strip; 19. a second guide block; 20. a second spring; 21. a limiting block; 22. a stopper spring; 23. extruding the block; 24. an extrusion block spring; 25. a horizontal housing; 26. a vertical shell; 27. a barrel groove; 28. a rod hole; 29. a sliding cavity; 30. a pulley cavity; 31. hanging a plate chute; 32. unlocking the through groove; 33. a slider slot; 34. a first guide groove; 35. a signal through groove; 36. a second guide groove; 37. extruding the cut; 38. a bevel; 39. a limiting block groove; 40. extruding a block groove; 50. a first trigger block; 51. a third guide block; 52. a third spring; 53. a second trigger block; 54. a fourth guide block; 55. a fourth spring; 56. a first trigger block chute; 57. a third guide groove; 58. a second trigger block chute; 59. a fourth guide groove; 60. sharp corners; 61. a winding chamber; 62. a limiting strip chute; 63. a hanging chute; 64. a suspension mechanism; 65. a winding wheel; 66. a suspension block; 67. a limiting strip; 68. a limiting bulge; 69. a suspension bar; 70. a limit strip spring; 71. connecting blocks; 72. a volute spiral spring; 73. a winding shaft; 74. a second wire rope; 75. and (4) winding the groove.

Detailed Description

As shown in figures 1 and 2, the device comprises an L-shaped shell 1, a suction cup 2, an unlocking bar 3, an air suction cylinder 5, an air suction piston 6, a pull rod 7, a pull plate 8, a pull plate spring 9, a first steel wire rope 10, a fixed pulley 12, a hanging plate 13, a first sliding block 14, a first guide block 15, a first spring 16, a sliding block spring 17, a signal bar 18, a second guide block 19, a second spring 20, a limiting block 21, a limiting block spring 22, an extrusion block 23, an extrusion block spring 24, a cylinder groove 27, a rod hole 28, a sliding cavity 29, a pulley cavity 30, a hanging plate sliding groove 31, an unlocking through groove 32, a sliding block groove 33, a first guide groove 34, a signal through groove 35, a second guide groove 36, an extrusion notch 37, an inclined surface 38, a limiting block groove 39, an extrusion block groove 40, a first trigger block 50, a third guide block 51, a third spring 52, a second trigger block 53, a fourth guide block 54, a fourth spring 55, a first trigger block 56, a third guide groove 57, a third, A second trigger block sliding groove 58, a fourth guide groove 59, a sharp corner 60, a winding cavity 61, a limiting strip sliding groove 62, a hanging sliding groove 63 and a hanging mechanism 64, as shown in fig. 7 and 8, wherein the L-shaped shell 1 is composed of a transverse shell 25 and a vertical shell 26; a cylinder groove 27 is arranged on the end face of one end of the transverse shell 25; a sliding cavity 29 and a pulley cavity 30 are formed in the transverse shell 25; the sliding cavity 29 is positioned between the sliding wheel cavity 30 and the barrel groove 27; the sliding wheel cavity 30 is communicated with the sliding cavity 29; a rod hole 28 is formed between the sliding cavity 29 and the cylinder groove 27; a hanging plate sliding groove 31 is formed in the end face of one end of the vertical shell 26; the hanging plate sliding groove 31 is communicated with the pulley cavity 30; as shown in fig. 9 and 10, two unlocking through grooves 32 are symmetrically formed on two side surfaces of the hanging plate sliding groove 31; the unlocking through slot 32 is close to the pulley cavity 30; two first guide grooves 34 are symmetrically formed in two side faces of each unlocking through groove 32; as shown in fig. 9 and 11, two slider grooves 33 are symmetrically formed on two side surfaces of the hanging plate sliding groove 31; the slide block slot 33 is close to the bottom of the hanging plate sliding slot 31; a signal through groove 35 is formed from the side groove surface of each slide block groove 33 to the side shell surface of the vertical shell 26; two second guide grooves 36 are symmetrically formed in two side faces of each signal through groove 35; for the two slider grooves 33, a first trigger block sliding groove 56 is formed on the bottom groove surface of one slider groove 33; two third guide grooves 57 are symmetrically formed in two sides of the first trigger block sliding groove 56; a second trigger block sliding groove 58 is formed in the side groove surface at the lower end of the first trigger block sliding groove 56; the second trigger block sliding groove 58 is communicated with the hanging plate sliding groove 31; two fourth guide grooves 59 are symmetrically formed on both sides of the second trigger block sliding groove 58.

As shown in fig. 3, 12, the suction cylinder 5 is mounted in the cylinder groove 27; the sucking disc 2 is arranged on one end of the air pumping cylinder 5; as shown in fig. 3 and 18, the extraction piston 6 is installed in the extraction cylinder 5, and the extraction piston 6 slides in the extraction cylinder 5; one end of the pull rod 7 is arranged on the air extraction piston 6, and the other end of the pull rod passes through the rod hole 28 and is provided with the pull plate 8; the pulling plate 8 is located in the sliding cavity 29; one end of each of the two pulling plate springs 9 is arranged on the plate surface of the pulling plate 8 far away from the pulling rod 7, and the other end is arranged on the side surface of the sliding cavity 29; the pulling plate 8 slides in the sliding cavity 29 through the pulling plate spring 9; as shown in fig. 3, 4, 18, the fixed sheave 12 is mounted in the sheave cavity 30 by a shaft; the hanging plate 13 is arranged in the hanging plate sliding groove 31; one end of a first steel wire rope 10 is arranged at the middle position of the plate surface of the pull plate 8 far away from the pull rod 7, and the other end of the first steel wire rope is connected with a hanging plate 13 through a fixed pulley 12; as shown in fig. 22 and 23, two limiting block grooves 39 are symmetrically formed on two sides of one end of the hanging plate 13 close to the first steel wire rope 10; two side surfaces of the hanging plate 13 provided with the limiting block grooves 39 are symmetrically provided with two extrusion block grooves 40; the extrusion block groove 40 is positioned at the lower side of the limiting block groove 39; as shown in fig. 5 and 24, the two limiting blocks 21 are respectively installed in the two limiting block grooves 39; the two extrusion blocks 23 are respectively arranged in the two extrusion block grooves 40; one end of each of the two stopper springs 22 is mounted on each of the two stoppers 21, and the other end is mounted on the bottom groove surface of the corresponding stopper groove 39; the limiting block 21 slides in the limiting block groove 39 through the limiting block spring 22; one end of each limiting block 21, which is far away from the limiting block spring 22, is provided with an inclined surface 38; one end of each of the two extrusion block springs 24 is mounted on each of the two extrusion blocks 23, and the other end is mounted on the bottom groove surface of the corresponding extrusion block groove 40; the extrusion block 23 slides in the extrusion block groove 40 through the extrusion block spring 24; the end of each pressing block 23 away from the pressing block spring 24 is provided with a slope 38; as shown in fig. 22 and 23, a side surface of the hanging plate 13 opposite to the second trigger block sliding groove 58 is provided with a limiting strip sliding groove 62; the limiting strip sliding groove 62 is positioned at the lower side of the extrusion block groove 40; a winding cavity 61 is formed in the hanging plate 13; the winding cavity 61 is positioned between the limiting strip sliding groove 62 and the extrusion block groove 40; the lower plate surface of the hanging plate 13 is provided with a hanging chute 63; the hanging sliding groove 63 is respectively communicated with the limiting strip sliding groove 62 and the winding cavity 61; as shown in fig. 19 and 21, the suspension mechanism 64 is installed in the winding chamber 61, the stopper slide groove 62, and the suspension slide groove 63.

As shown in fig. 4, 5, and 13, the two unlocking bars 3 are respectively installed in the two unlocking through grooves 32; two first guide blocks 15 are symmetrically arranged on two sides of each unlocking bar 3, and a first spring 16 is arranged on each first guide block 15; the two first guide blocks 15 are respectively positioned in the two first guide grooves 34 at the corresponding unlocking through grooves 32; one end of each first spring 16, which is not connected with the first guide block 15, is mounted on the groove surface of the corresponding first guide groove 34; the first guide blocks 15 slide in the corresponding first guide grooves 34 by the first springs 16.

As shown in fig. 4, 6 and 14, two signal bars 18 are respectively installed in the two signal through slots 35; two second guide blocks 19 are symmetrically arranged on two sides of each signal strip 18, and a second spring 20 is arranged on each second guide block 19; the two second guide blocks 19 are respectively positioned in the two second guide grooves 36 at the corresponding signal through groove 35; one end of each second spring 20, which is not connected with the second guide block 19, is arranged on the groove surface of the corresponding second guide groove 36; the second guide blocks 19 slide in the corresponding second guide grooves 36 through the second springs 20; the end of each signal strip 18 remote from the second spring 20 has a ramp 38.

As shown in fig. 4, 6, 14, the two first sliders 14 are respectively installed in the two slider grooves 33; one end of each of the two slider springs 17 is mounted on each of the two first sliders 14, and the other end thereof is mounted on the bottom groove surfaces of the two slider grooves 33; the first slider 14 slides in the slider groove 33 by the slider spring 17; the end surface of each first sliding block 14 far away from the sliding block spring 17 is provided with a pressing notch 37.

The two extrusion blocks 23 are respectively matched with the two extrusion notches 37; the two limiting blocks 21 are respectively matched with the two unlocking bars 3; the two first sliders 14 are respectively engaged with the two signal bars 18.

As shown in fig. 6, 15, 16, the first trigger block 50 is mounted in the first trigger block slide slot 56; two third guide blocks 51 are symmetrically arranged on two sides of the first trigger block 50; the two third guide blocks 51 are respectively positioned in the two third guide grooves 57; one end of each of the two third springs 52 is mounted on each of the two third guide blocks 51, and the other end is mounted on the groove surface of the corresponding third guide groove 57; the two third springs 52 are respectively located in the corresponding third guide grooves 57; the third guide blocks 51 slide in the third guide grooves 57 by the respective third springs 52; as shown in fig. 6, 15 and 17, the second trigger block 53 is mounted in the second trigger block slide groove 58; two fourth guide blocks 54 are symmetrically installed on both sides of the second trigger block 53; the two fourth guide blocks 54 are respectively positioned in the two fourth guide grooves 59; one ends of the two fourth springs 55 are respectively mounted on the two fourth guide blocks 54, and the other ends are mounted on the groove surfaces of the corresponding fourth guide grooves 59; the two fourth springs 55 are respectively located in the corresponding fourth guide grooves 59; the fourth guide blocks 54 slide in the fourth guide grooves 59 by the respective fourth springs 55; as shown in FIG. 16, the end of the first trigger block 50 remote from the slider slot 33 has a ramp 38; as shown in FIG. 17, the second trigger block 53 has a bevel 38 at one end near the first trigger block runner 56 and a sharp corner 60 at the other end; the first slider 14 cooperates with the first trigger block 50; as shown in fig. 15, the ramp 38 on the first trigger block 50 mates with the ramp 38 on the second trigger block 53.

As shown in fig. 25, the suspension mechanism 64 includes a hook 4, a winding wheel 65, a suspension block 66, a limiting bar 67, a limiting protrusion 68, a suspension bar 69, a limiting bar spring 70, a connecting block 71, a spiral spring 72, a winding shaft 73, a second steel wire rope 74, and a winding groove 75, as shown in fig. 19, 20, and 26, wherein the winding shaft 73 is installed between two sides of the winding cavity 61; the winding wheel 65 is installed on the outer circumferential surface of the winding shaft 73; a winding groove 75 is formed on the outer circular surface of the winding wheel 65; one end of the spiral spring 72 is installed on the winding shaft 73, and the other end is installed on the side of the winding wheel 65 through the connection block 71; winding wheel 65 and scroll spring 72 are both located in winding chamber 61; one end of the second wire rope 74 is installed on the winding groove 75 in a winding manner, and the other end is provided with the hanging block 66; as shown in fig. 21 and 25, one end of the suspension bar 69 is mounted on the side of the suspension block 66 away from the second wire rope 74, and the other end is mounted with the hook 4; the suspension block 66 and the suspension bar 69 are both located in the suspension chute 63; the suspension block 66 slides in the suspension chute 63; as shown in fig. 19, 20, 27, the stopper 67 is installed in the stopper slide groove 62; the side surface of the limit strip 67 is provided with two limit bulges 68; the two limit protrusions 68 are matched with the hanging block 66; the two limit protrusions 68 are matched with the hanging sliding groove 63; two limiting strip springs 70 are symmetrically arranged on the side surface of the limiting strip 67 far away from the limiting bulge 68; one end of each limiting strip spring 70, which is not connected with the limiting strip 67, is arranged on the groove surface of the limiting strip sliding groove 62; the limiting strip 67 slides in the limiting strip sliding groove 62 through a limiting strip spring 70; one end of the limiting strip 67 close to the notch of the limiting strip sliding groove 62 is provided with an inclined surface 38; the inclined surface 38 on the stop strip 67 cooperates with the sharp corner 60 on the second trigger block 53.

When the pull plate spring 9 is not compressed, the pull plate 8 is located at the side of the sliding chamber 29 where the rod hole 28 is opened.

When the leaf spring 9 is not compressed, the extraction piston 6 is located at the end of the extraction cylinder 5 where the suction cup 2 is mounted.

When the leaf spring 9 is not compressed, the end of the stopper 21 having the inclined surface 38 is located in the stopper groove 39, and the stopper spring 22 is in a compressed state.

When the leaf spring 9 is uncompressed, the end of the pressing block 23 having the inclined surface 38 is located in the pressing block groove 40, and the pressing block spring 24 is in a compressed state.

When the second spring 20 is uncompressed, the end of the signal strip 18 having the ramp 38 is located in the slider slot 33.

When the first spring 16 is not compressed, a distance is formed between one end of the unlocking bar 3 close to the hanging plate sliding groove 31 and the hanging plate sliding groove 31, and one end of the unlocking bar 3 far away from the hanging plate sliding groove 31 extends out of the vertical shell 26.

When the third spring 52 is not compressed, one end of the first trigger block 50 penetrates through the first trigger block sliding groove 56; when the fourth spring 55 is not compressed, the end of the second trigger block 53 having the ramp 38 is located in the first trigger block slide slot 56.

When the stopper spring 70 is not compressed, the two stopper projections 68 are located in the suspension runner 63.

The second wire rope 74 is wound on the winding wheel 65 for 10 to 15 turns.

According to the invention, the hanging plate 13 can be pulled by a steel wire rope to move towards the fixed pulley 12 by the pulling plate 8; the pulling plate 8 drives the air extracting piston 6 to move towards the fixed pulley 12 through the pulling rod 7.

The pulling plate spring 9 can make the pulling plate 8 move and reset; the limiting block spring 22 can enable the limiting block 21 to move and reset; the extrusion block spring 24 can move and reset the extrusion block 23; the slider spring 17 can move and reset the first slider 14. The unlocking bar 3 can slide in the unlocking through groove 32, and the unlocking bar 3 can drive the corresponding first guide block 15 to slide in the first guide groove 34, and the first spring 16 can enable the first guide block 15 to move and reset.

In the invention, two first sliders 14 are respectively matched with two signal strips 18, one end of each signal strip 18, which is far away from a second spring 20, is provided with an inclined surface 38, and when the second spring 20 is not compressed, one end of each signal strip 18, which is provided with the inclined surface 38, is positioned in the slider groove 33; then, during the process of moving the first slider 14 toward the slider spring 17, the first slider 14 may press the inclined surface 38 of the signal strip 18, and the signal strip 18 may protrude out of the L-shaped housing 1 under the pressing force. The signal bar 18 can slide in the signal through slot 35, and the signal bar 18 can drive the corresponding second guide block 19 to slide in the second guide slot 36, and the second spring 20 can move and reset the second guide block 19.

According to the invention, two limiting blocks 21 are respectively matched with two unlocking strips 3, when a first spring 16 is not compressed, a distance is reserved between one end, close to a hanging plate sliding groove 31, of each unlocking strip 3 and the hanging plate sliding groove 31, and one end, far away from the hanging plate sliding groove 31, of each unlocking strip 3 extends out of the vertical shell 26; the user can push the unlocking bar 3 out of one end of the vertical shell 26 by pressing the unlocking bar 3, so that the limiting block 21 is pushed out of the unlocking through groove 32 by the unlocking bar 3. The limiting block 21 with the inclined surface 38 has the effect that when the hanging plate 13 drives the limiting block 21 to move downwards, the limiting block 21 in the unlocking through groove 32 can automatically separate from the unlocking through groove 32 under the action of the inclined surface 38.

The two extrusion blocks 23 are respectively matched with the two extrusion notches 37, when the extrusion blocks 23 are located at the positions of the sliding block grooves 33 and are opposite to the corresponding extrusion notches 37, the extrusion block springs 24 in a compressed state can enable the extrusion blocks 23 to be rapidly inserted into the extrusion notches 37, in the process that the hanging plate 13 continues to drive the extrusion blocks 23 to move downwards, the extrusion blocks 23 can extrude the first sliding blocks 14, and then the first sliding blocks 14 move downwards along with the extrusion blocks 23. The pressing block 23 has a slope 38, so that when the hanging plate 13 drives the pressing block 23 to move upwards, the pressing block 23 in the slider groove 33 can automatically separate from the slider groove 33 under the action of the slope 38.

The first sliding block 14 is matched with the first trigger block 50, the inclined surface 38 on the first trigger block 50 is matched with the inclined surface 38 on the second trigger block 53, and the inclined surface 38 on the limiting strip 67 is matched with the sharp corner 60 on the second trigger block 53 to function as: after the first sliding block 14 presses the first trigger block 50, the first trigger block 50 moves away from the first sliding block 14; the inclined plane 38 on the first trigger block 50 presses the inclined plane 38 on the second trigger block 53, and under the action of the inclined plane 38, the second trigger block 53 moves towards the direction far away from the first trigger block 50; at this time, the sharp corner 60 of the second trigger block 53 extending out of the second trigger block sliding groove 58 presses the inclined surface 38 of the limit strip 67, and the limit strip 67 moves towards the limit strip spring 70 under the action of the inclined surface 38.

According to the invention, the first trigger block 50 can drive the corresponding third guide block 51 to slide in the third guide groove 57, and the third spring 52 can enable the third guide block 51 to move and reset; the second trigger block 53 can drive the corresponding fourth guide block 54 to slide in the fourth guide slot 59, and the fourth spring 55 can move and reset the fourth guide block 54; the position-limiting strip spring 70 can move and reset the position-limiting strip 67.

The two limit protrusions 68 are matched with the hanging block 66, and the two limit protrusions 68 are matched with the hanging sliding groove 63 to function as follows: on one hand, when the limiting strip spring 70 is not compressed, the two limiting bulges 68 are positioned in the hanging sliding groove 63, and the hanging block 66 is limited by the two limiting bulges 68; on the other hand, after the limiting strip spring 70 is compressed, the limiting strip 67 drives the two limiting protrusions 68 to move towards the limiting strip spring 70, the two limiting protrusions 68 are separated from the hanging sliding groove 63, and the hanging block 66 is not limited by the two limiting protrusions 68.

In the present invention, the winding shaft 73 is fixed, and the winding wheel 65 can rotate around the axis of the winding shaft 73; wrap spring 72 may rotationally reset winding wheel 65 such that second cable 74 is wound again.

The second wire rope 74 wound on the winding wheel 65 for 10 to 15 turns in the present invention is designed in such a way that the second wire rope 74 wound for 10 to 15 turns can ensure enough space for the weight to fall down, so that the wire rope can still pull the weight when the weight falls down on the ground.

The specific implementation mode is as follows: when the hook 4 is not used for hanging heavy objects, the pulling plate spring 9 is not compressed, and the pulling plate 8 is positioned at the side surface of the sliding cavity 29, on which the rod hole 28 is formed; the air extraction piston 6 is positioned at one end of the air extraction cylinder 5 provided with the sucking disc 2; the end of the stopper 21 with the inclined surface 38 is positioned in the stopper groove 39, and the stopper spring 22 is in a compressed state; the end of the expression nub 23 having the ramp 38 is located in the expression nub slot 40 and the expression nub spring 24 is in a compressed state.

When the sucker 2 needs to be adsorbed on an object, a user presses the sucker 2 on the smooth surface of the object and then pulls the hook 4 downwards; the hook 4 drives the pull plate 8 to move towards the pull plate spring 9 through the hanging plate 13 and the first steel wire rope 10, the pull plate spring 9 is compressed, and the pull plate 8 drives the air extraction piston 6 to move towards the pull plate spring 9 through the pull rod 7; during the movement of the extraction piston 6, part of the gas in the suction cup 2 is sucked into the extraction cylinder 5; the inside and the outside of the sucker 2 have pressure difference, and the sucker 2 is adsorbed on an object under the action of atmospheric pressure; in the process that the limiting block 21 moves downwards along with the hanging plate 13, when the limiting block 21 is located at the unlocking through groove 32, the limiting block spring 22 in a compressed state can enable the limiting block 21 to be rapidly inserted into the unlocking through groove 32, so that the limiting block 21 limits the hanging plate 13, and the hanging plate 13 cannot move upwards; finally the suction cup 2 is sucked on the object without falling off.

After a heavy object is hung on the hook 4, under the action of the gravity of the heavy object, the hook 4 drives the hanging plate 13 to move downwards, the hanging plate 13 continues to drive the pull plate 8 to move towards the pull plate spring 9 through the steel wire rope, the pull plate spring 9 continues to be compressed, and the pull plate 8 drives the air extraction piston 6 to continue to move towards the pull plate spring 9 through the pull rod 7; during the movement of the suction piston 6, another part of the gas in the suction cup 2 is sucked into the suction cylinder 5, and the suction force of the suction cup 2 increases. In the process that the hanging plate 13 moves downwards, the hanging plate 13 drives the limiting block 21 to move downwards, and the limiting block 21 positioned in the unlocking through groove 32 can automatically separate from the unlocking through groove 32 under the action of the inclined surface 38 of the limiting block 21; the end of the stopper 21 having the ramp 38 is pressed into the stopper groove 39 and the stopper spring 22 is again in compression. Along with the weight of the heavy object is increased continuously, more and more gas is sucked into the air suction tube 5, the adsorption force of the sucking disc 2 is increased, and the sucking disc 2 is still adsorbed on the object and cannot fall off.

When the weight of the weight reaches a certain amount, in the process that the extrusion block 23 moves downwards along with the hanging plate 13, when the extrusion block 23 is positioned at the position of the slider groove 33 and is opposite to the corresponding extrusion notch 37, the extrusion block spring 24 in a compressed state can enable the extrusion block 23 to be rapidly inserted into the extrusion notch 37; when the weight of the heavy object continues to increase, the hanging plate 13 continues to drive the extrusion block 23 to move downwards, the extrusion block 23 extrudes the first sliding block 14, and then the first sliding block 14 moves downwards along with the extrusion block 23.

When the weight of the heavy object approaches the maximum adsorption force of the sucker 2, the hanging plate 13 continues to drive the extrusion block 23 to move downwards, and the first sliding block 14 moves downwards to be close to the bottom of the sliding block groove 33 along with the extrusion block 23; during the process that the first slider 14 moves to be close to the bottom of the slider groove 33, the first slider 14 can press the inclined surface 38 of the signal strip 18, and the signal strip 18 extends out of the L-shaped housing 1 under the pressing force, and the second spring 20 is compressed. When the user sees that the signal strip 18 extends from the outside of the L-shaped housing 1, he knows that the weight of the weight is close to the maximum hanging weight allowed by the suction cup 2, and he cannot hang any heavier weight. Such a design can avoid the user to hang the maximum hanging weight that exceeds the suction cup 2 can allow, and then has prevented that suction cup 2 from droing and the heavy object from dropping to the bottom surface, has protected the heavy object. In addition, the invention can adjust the adsorption force of the sucker 2 according to the hanging weight within the maximum hanging weight range allowed by the sucker 2, so that the sucker 2 can be better adapted to hanging under different conditions.

When the user does not see the extension of the signal bar 18 due to negligence and continues to increase the hanging weight, or the user directly hangs a heavy object which exceeds the maximum hanging weight allowed by the suction cup 2, the hanging plate 13 drives the extrusion block 23 to move downwards to the extreme position, and the first sliding block 14 moves downwards along with the extrusion block 23 to the bottom of the sliding block slot 33; in the process, the first slider 14 presses the first trigger block 50, the first trigger block 50 moves in the direction away from the first slider 14, the first trigger block 50 drives the corresponding third guide block 51 to move in the direction away from the first slider 14, and the third spring 52 is compressed; the inclined surface 38 on the first trigger block 50 presses the inclined surface 38 on the second trigger block 53, and under the action of the inclined surface 38, the second trigger block 53 moves in the direction away from the first trigger block 50, and the second trigger block 53 drives the corresponding fourth guide block 54 to move in the direction away from the first trigger block 50, so that the third spring 52 is compressed. At this time, the second trigger block 53 extends out of the second trigger block sliding groove 58, and the sharp corner 60 on the second trigger block 53 extending out of the second trigger block sliding groove 58 just extrudes the inclined surface 38 on the limit strip 67, and under the action of the inclined surface 38, the limit strip 67 moves towards the limit strip spring 70, and the limit strip spring 70 is compressed; the limiting strip 67 drives the two limiting protrusions 68 to move towards the direction of the limiting strip spring 70, the two limiting protrusions 68 are separated from the hanging sliding groove 63, and the hanging block 66 is not limited by the two limiting protrusions 68 any more. The weight pulls the hanger 66 downward under gravity via the hook 4 and the hanger bar 69; the suspension block 66 moves the second wire 74 downward, and the second wire 74 wound around the winding wheel 65 is released, and the winding wheel 65 starts to rotate and the spiral spring 72 starts to be compressed.

At the instant when the weight is ready to fall downwardly, second cable 74 is released, volute spring 72 is in an uncompressed state, at which time the weight is subjected to its own weight only; during the downward fall of the weight, the second cable 74 is gradually released, the spiral spring 72 is gradually compressed, and the spiral spring 72 is more and more difficult to be compressed as the second cable 74 is more and more released; the second cable 74 pulls the weight more and more during the progressive compression of the spiral spring 72, and the weight falls more and more slowly when the pulling force is greater than the gravity. When the heavy object falls to the position close to the ground, the falling speed of the heavy object is slowed down, so that the heavy object falling to the ground can not cause great damage to the heavy object, the heavy object is protected, and physical damage caused by the heavy object falling to the ground is avoided.

When the suspended weight is not suspended from the hook 4 any more, the winding wheel 65 rapidly rewinds the second wire rope 74 on the winding wheel 65 by the restoring force of the spiral spring 72, and the second wire rope 74 pulls the suspension block 66 to return to the original position again while the second wire rope 74 is being wound. Under the reset action of the pulling plate spring 9, the pulling plate 8 moves towards the direction of the sucker 2, and the pulling plate 8 drives the hanging plate 13 to move upwards through the first steel wire rope 10; in the process that the hanging plate 13 drives the extrusion block 23 to move upwards, the extrusion block 23 positioned in the slider groove 33 can automatically separate from the slider groove 33 under the action of the inclined surface 38 of the extrusion block 23, one end of the extrusion block 23 with the inclined surface 38 is extruded into the extrusion block groove 40, and the extrusion block spring 24 is in a compressed state again; when link plate 13 drives stopper 21 rebound, when extrusion piece 23 was located the logical groove 32 position department of unblock, stopper spring 22 under the compression state made stopper 21 insert the logical groove 32 of unblock fast, and stopper 21 is spacing with link plate 13, and link plate 13 will unable rebound, and sucking disc 2 is still adsorbed on the object. In the process that the hanging plate 13 moves upwards, the limiting strip sliding groove 62 extrudes the inclined surface 38 of the sharp corner 60 on the second trigger block 53, and under the action of the inclined surface 38 of the sharp corner 60, the second trigger block 53 is separated from the limiting strip sliding groove 62, so that the second trigger block 53 does not extrude the limiting strip 67 any more; under the reset action of the limiting strip spring 70, the limiting strip 67 is restored to the original position; the two limiting protrusions 68 are driven by the limiting strip 67 to return to the original positions, and the two limiting protrusions 68 limit the hanging block 66 again. Under the reset action of the slider spring 17, the first slider 14 moves to the original position; under the reset action of the second spring 20, the second guide block 19 drives the signal strip 18 to return to the original position; under the reset action of the third spring 52, the third guide block 51 drives the first trigger block 50 to return to the original position; under the reset action of the fourth spring 55, the fourth guide block 54 drives the second trigger block 53 to return to the original position.

When the suction cup 2 needs to be taken away, a user can press the unlocking bar 3 to extend out of one end of the vertical shell 26, so that the unlocking bar 3 pushes the limiting block 21 out of the unlocking through groove 32, and the first spring 16 is compressed; after the limiting block 21 is separated from the unlocking through groove 32, the limiting block 21 does not limit the hanging plate 13 any more, and then under the reset action of the pull plate spring 9, the pull plate 8 drives the hanging plate 13 to return to the original position through the first steel wire rope 10; the air in the air pumping cylinder 5 is completely pushed back to the sucker 2 by the air pumping piston 6, and then the air pressure in the sucker 2 is the same as the external atmospheric pressure, so that a user can easily take up the sucker 2. Under the reset action of the first spring 16, the first guide block 15 drives the unlocking bar 3 to return to the original position.

In conclusion, the invention has the main beneficial effects that: the invention can pull the hook 4 to make the air extracting piston 6 to extract part of the air in the suction cup 2 into the air extracting cylinder 5, so that the suction cup 2 can be easily absorbed on the object; in addition, along with the increase of the weight of the suspended object, the adsorption force of the sucker 2 is also increased, so that the sucker 2 is better suitable for suspension under different conditions; when the suspended weight is close to the limit suspended weight of the suction cup 2, the extension of the signal strip 18 can remind the user that a heavier object cannot be suspended any more, and the suction cup 2 is prevented from falling off and the suspended object is prevented from falling on the ground. When the suspended weight exceeds the limit suspended weight of the suction cup 2, the suspension mechanism 64 can prevent the suspended object from quickly falling to the ground, thereby protecting the weight. The invention has simple structure and better use effect.

Claims

1. The utility model provides a sucking disc convenient to protect heavy object, it includes L type casing, sucking disc, couple, pump bowl, bleed piston, pull rod, arm-tie, signal strip, L type casing comprises horizontal casing and perpendicular casing, its characterized in that: the device comprises an unlocking bar, a pull plate spring, a first steel wire rope, a fixed pulley, a hanging plate, a first sliding block, a first guide block, a first spring, a sliding block spring, a second guide block, a second spring, a limiting block spring, an extrusion block spring, a barrel groove, a rod hole, a sliding cavity, a pulley cavity, a hanging plate sliding groove, an unlocking through groove, a sliding block groove, a first guide groove, a signal through groove, a second guide groove, an extrusion notch, an inclined plane, a limiting block groove, an extrusion block groove, a first trigger block, a third guide block, a third spring, a second trigger block, a fourth guide block, a fourth spring, a first trigger block sliding groove, a third guide groove, a second trigger block sliding groove, a fourth guide groove, a sharp corner, a winding cavity, a limiting bar sliding groove, a suspension sliding groove and a suspension mechanism, wherein the barrel groove is formed in one end face of a transverse shell; a sliding cavity and a pulley cavity are formed in the transverse shell; the sliding cavity is positioned between the pulley cavity and the barrel groove; the pulley cavity is communicated with the sliding cavity; a rod hole is formed between the sliding cavity and the cylinder groove; a hanging plate sliding groove is formed in the end face of one end of the vertical shell; the hanging plate sliding groove is communicated with the pulley cavity; two unlocking through grooves are symmetrically formed in the two side faces of the hanging plate sliding groove; the unlocking through groove is close to the pulley cavity; two first guide grooves are symmetrically formed in two side faces of each unlocking through groove; two sliding block grooves are symmetrically arranged on two side surfaces of the hanging plate sliding groove; the sliding block groove is close to the bottom of the hanging plate sliding groove; a signal through groove is formed from the side groove surface of each sliding block groove to the side shell surface of the vertical shell; two second guide grooves are symmetrically formed in the two side faces of each signal through groove; for the two slider grooves, a first trigger block sliding groove is formed in the bottom groove surface of one slider groove; two third guide grooves are symmetrically formed in two sides of the first trigger block sliding groove; a second trigger block sliding groove is formed in the side groove surface at the lower end of the first trigger block sliding groove; the second trigger block chute is communicated with the hanging plate chute; two fourth guide grooves are symmetrically formed in the two sides of the sliding groove of the second trigger block;

the air pumping cylinder is arranged in the cylinder groove; the sucking disc is arranged on one end of the air pumping cylinder; the air extraction piston is arranged in the air extraction cylinder and slides in the air extraction cylinder; one end of the pull rod is arranged on the air exhaust piston, and the other end of the pull rod penetrates through the rod hole and is provided with a pull plate; the pulling plate is positioned in the sliding cavity; one end of each of the two pull plate springs is arranged on the plate surface of the pull plate far away from the pull rod, and the other end of each of the two pull plate springs is arranged on the side surface of the sliding cavity; the pulling plate slides in the sliding cavity through a pulling plate spring; the fixed pulley is arranged in the pulley cavity through a shaft; the hanging plate is arranged in the hanging plate sliding groove; one end of the first steel wire rope is arranged at the middle position of the plate surface of the pulling plate far away from the pulling rod, and the other end of the first steel wire rope is connected with the hanging plate through the fixed pulley; two limiting block grooves are symmetrically formed in the two sides of one end, close to the first steel wire rope, of the hanging plate; two side surfaces of the hanging plate provided with the limiting block grooves are symmetrically provided with two extrusion block grooves; the extrusion block groove is positioned at the lower side of the limiting block groove; the two limiting blocks are respectively arranged in the two limiting block grooves; the two extrusion blocks are respectively arranged in the two extrusion block grooves; one end of each of the two limiting block springs is respectively arranged on the two limiting blocks, and the other end of each limiting block spring is arranged on the bottom groove surface of the corresponding limiting block groove; the limiting block slides in the limiting block groove through a limiting block spring; one end of each limiting block, which is far away from the limiting block spring, is provided with an inclined plane; one end of each of the two extrusion block springs is respectively arranged on the two extrusion blocks, and the other end of each of the two extrusion block springs is arranged on the bottom groove surface of the corresponding extrusion block groove; the extrusion block slides in the extrusion block groove through an extrusion block spring; one end of each extrusion block, which is far away from the extrusion block spring, is provided with an inclined surface; the side surface of the hanging plate opposite to the sliding groove of the second trigger block is provided with a limiting sliding groove; the limiting strip sliding groove is positioned at the lower side of the extrusion block groove; a winding cavity is formed in the hanging plate; the winding cavity is positioned between the limiting strip sliding groove and the extrusion block groove; the lower plate surface of the hanging plate is provided with a hanging chute; the suspension sliding groove is respectively communicated with the limiting strip sliding groove and the winding cavity; the suspension mechanism is arranged in the winding cavity, the limiting strip sliding groove and the suspension sliding groove;

the two unlocking bars are respectively arranged in the two unlocking through grooves; two first guide blocks are symmetrically arranged on two sides of each unlocking bar, and a first spring is arranged on each first guide block; the two first guide blocks are respectively positioned in the two first guide grooves at the corresponding unlocking through grooves; one end of each first spring, which is not connected with the first guide block, is arranged on the groove surface of the corresponding first guide groove; the first guide blocks slide in the corresponding first guide grooves through first springs;

the two signal strips are respectively arranged in the two signal through grooves; two second guide blocks are symmetrically arranged on two sides of each signal strip, and a second spring is arranged on each of the two second guide blocks; the two second guide blocks are respectively positioned in the two second guide grooves at the corresponding signal through grooves; one end of each second spring, which is not connected with the second guide block, is arranged on the groove surface of the corresponding second guide groove; the second guide blocks slide in the corresponding second guide grooves through second springs; one end of each signal strip, which is far away from the second spring, is provided with an inclined surface;

the two first sliding blocks are respectively arranged in the two sliding block grooves; one end of each of the two slider springs is respectively arranged on the two first sliders, and the other end of each of the two slider springs is respectively arranged on the bottom groove surfaces of the two slider grooves; the first sliding block slides in the sliding block groove through a sliding block spring; an end face of one end, far away from the sliding block spring, of each first sliding block is provided with an extrusion notch;

the two extrusion blocks are respectively matched with the two extrusion notches; the two limiting blocks are respectively matched with the two unlocking bars; the two first sliding blocks are respectively matched with the two signal strips;

the first trigger block is arranged in the first trigger block sliding groove; two third guide blocks are symmetrically arranged on two sides of the first trigger block; the two third guide blocks are respectively positioned in the two third guide grooves; one end of each of the two third springs is respectively installed on the two third guide blocks, and the other end of each of the two third springs is installed on the groove surface of the corresponding third guide groove; the two third springs are respectively positioned in the corresponding third guide grooves; the third guide block slides in the third guide groove through a corresponding third spring; the second trigger block is arranged in the second trigger block sliding groove; two fourth guide blocks are symmetrically arranged on two sides of the second trigger block; the two fourth guide blocks are respectively positioned in the two fourth guide grooves; one end of each of the two fourth springs is respectively installed on the two fourth guide blocks, and the other end of each of the two fourth springs is installed on the groove surface of the corresponding fourth guide groove; the two fourth springs are respectively positioned in the corresponding fourth guide grooves; the fourth guide block slides in the fourth guide groove through a corresponding fourth spring; one end of the first trigger block, which is far away from the sliding block slot, is provided with an inclined plane; one end of the second trigger block, which is close to the first trigger block sliding groove, is provided with an inclined plane, and the other end is provided with a sharp corner; the first sliding block is matched with the first trigger block; the inclined plane on the first trigger block is matched with the inclined plane on the second trigger block;

the suspension mechanism comprises a hook, a winding wheel, a suspension block, a limiting strip, a limiting bulge, a suspension strip, a limiting strip spring, a connecting block, a volute spiral spring, a winding shaft, a second steel wire rope and a winding groove, wherein the winding shaft is arranged between two side surfaces of the winding cavity; the winding wheel is arranged on the outer circular surface of the winding shaft; the outer circle surface of the winding wheel is provided with a winding groove; one end of the scroll spring is arranged on the winding shaft, and the other end of the scroll spring is arranged on the side surface of the winding wheel through a connecting block; the winding wheel and the scroll spring are both positioned in the winding cavity; one end of the second steel wire rope is arranged on the winding groove in a winding mode, and the other end of the second steel wire rope is provided with a suspension block; one end of the suspension strip is arranged on the side surface of the suspension block far away from the second steel wire rope, and the other end of the suspension strip is provided with a hook; the suspension block and the suspension bar are both positioned in the suspension sliding groove; the suspension block slides in the suspension chute; the limiting strip is arranged in the limiting strip sliding groove; the side surface of the limiting strip is provided with two limiting bulges; the two limiting bulges are matched with the hanging block; the two limiting bulges are matched with the hanging sliding groove; two limiting strip springs are symmetrically arranged on the side surface of the limiting strip far away from the limiting bulge; one end of each limiting strip spring, which is not connected with the limiting strip, is arranged on the groove surface of the limiting strip sliding groove; the limiting strip slides in the limiting strip sliding groove through a limiting strip spring; one end of the limiting strip, which is close to the notch of the limiting strip sliding groove, is provided with an inclined plane; the inclined plane on the limiting strip is matched with the sharp corner on the second trigger block;

when the pulling plate spring is not compressed, the pulling plate is positioned at the side surface of the sliding cavity, which is provided with the rod hole;

when the second spring is not compressed, one end of the signal bar with the inclined plane is positioned in the sliding block groove;

when the first spring is not compressed, a distance is reserved between one end of the unlocking bar close to the hanging plate sliding groove and the hanging plate sliding groove, and one end of the unlocking bar far away from the hanging plate sliding groove extends out of the vertical shell;

when the third spring is not compressed, one end of the first trigger block penetrates out of the first trigger block sliding groove; when the fourth spring is not compressed, one end of the second trigger block with the inclined plane is positioned in the sliding groove of the first trigger block;

when the limiting strip spring is not compressed, the two limiting bulges are positioned in the hanging sliding groove;

the second wire rope is wound on the winding wheel for 10 to 15 turns.

2. A suction cup for facilitating the protection of heavy objects as claimed in claim 1, wherein: when the leaf spring is not compressed, the extraction piston is located at the end of the extraction cylinder where the suction cup is mounted.

3. A suction cup for facilitating the protection of heavy objects as claimed in claim 1, wherein: when the pulling plate spring is not compressed, one end of the limiting block with the inclined plane is positioned in the limiting block groove, and the limiting block spring is in a compressed state.

4. A suction cup for facilitating the protection of heavy objects as claimed in claim 1, wherein: when the leaf spring is not compressed, one end of the extrusion block with the inclined surface is positioned in the extrusion block groove, and the extrusion block spring is in a compressed state.