CN211077629U - Mechanical grabbing device for circular materials - Google Patents

Abstract

The utility model discloses a circular material mechanical grabbing device belongs to solid waste treatment technical field. The device comprises an actuator support for arranging a linear actuator capable of extending and retracting vertically, wherein the actuator support is fixedly connected with an annular upper disc, and a push rod of the linear actuator penetrates through the upper disc and is fixedly connected with the center of a lower disc; the three fixed arms extending radially are uniformly distributed and fixed in the circumferential direction of the lower disc, the outer ends of the fixed arms are hinged to the middle of the clamping arm, the clamping arm is in a bent arm shape formed by a radial downward-tilting arm and a vertical gripper arm which are connected into a whole, the three gripper arms surround a clamping circle, a horizontal shaft roller is mounted at the inner end of the downward-tilting arm, and the roller is located in a circumferential chute of the upper disc to form movable fit. The clamping of the utility model is realized by the relative vertical movement of the upper disc and the lower disc, and the radial driving is not needed, so the structure is compact; and the structure that the upper plate and the lower plate restrain the idler wheels at the inner ends of the clamping arms not only enables the moving pair and the hinge pair to be combined, the mechanism is obviously simplified, but also can effectively avoid clamping stagnation, and ensures the stability and reliability of clamping.

Description

Mechanical grabbing device for circular materials

Technical Field

The utility model relates to a mechanical grabbing device, especially a circular material mechanical grabbing device belong to solid waste processing technology field.

Background

In order to reduce the environmental impact of the polluting waste, the polluting solid waste is generally subjected to a minimization treatment, namely, a compaction volume reduction treatment at each stage. For example, steel drums containing compactable dry contaminants are hypercompacted to produce a cake, which is then placed into the drum and secondary packaged for cementing. In the process, in order to improve the pollutant filling rate and reduce the volume of pollutants to be treated, several drum cakes with proper weight and height need to be placed into a steel drum through a drum cake preferred system grabbing device so as to optimize the space utilization rate in the steel drum.

In the search, chinese patent application No. 201720862170 discloses a three-jaw pneumatic manipulator grabbing mechanism, which includes: the utility model discloses a three-jaw mechanism, including stand, installation staple bolt, slide rail, slider, vertical actuating mechanism, hand claw mounting panel, three-jaw mechanism, the figure of stand is 2, is the planer-type and fixes on table surface, the slide rail passes through the installation staple bolt links firmly the upper end of stand, slider swing joint in the slide rail, vertical actuating mechanism link firmly in the slider, the hand claw mounting panel link firmly in vertical actuating mechanism, three-jaw mechanism link firmly in the hand claw mounting panel. According to introduction, the technical scheme can ensure that the three fingers have high synchronism in the opening and closing process of the three-jaw mechanism, so that the three-jaw mechanism has good grabbing performance. However, although the technical solution of the patent document is not clear (for example, how the air claw cylinder drives the crosshead shoe is not described), it can be seen that the coupling links of the mechanical kinematic pair include a horizontal moving pair of the air claw cylinder 108 and the crosshead shoe 109, a moving pair of the crosshead shoe 109 and a sliding slot on the upper surface of the sliding rod 110, a first hinge pair of the outer end of the sliding rod 110 and the upper end of the finger 111, and a second hinge pair 113 of the connecting plate 114 and the middle of the hook-shaped rod 121. Such a large number of mechanism links not only makes the structure complicated, and the accumulated error is large, so the clamping is not reliable, but also the moving pair adjacent to the power source is easy to have clamping stagnation failure, and must be avoided in the process of transferring the polluting solid wastes. In addition, the technical scheme has the following defects: 1) the grabbing action of the hook-shaped rod is driven by the centripetal sliding of the cross slide block along the sliding rod, so that a radial driving space needs to be reserved, and the structure is not compact; 2) the clamping range of the hook-shaped rod 121 is fixed, and the adaptability is poor.

Disclosure of Invention

The utility model aims to provide a: the mechanical circular material grabbing device is simple and convenient in mechanism, compact in structure and stable and reliable in clamping, and therefore safety of grabbing and loading the polluting solid waste material barrel cakes into the steel barrel is guaranteed.

In order to achieve the above object, the utility model discloses circular material mechanical gripping device's basic technical scheme as follows: the linear actuator comprises an actuator support for arranging a vertically telescopic linear actuator, wherein the actuator support is fixedly connected with an annular upper disc, and a push rod of the linear actuator penetrates through the upper disc and is fixedly connected with the center of a lower disc;

the fixed three fixed arms that radially extend of disc circumference equipartition down, the outer end of fixed arm is articulated with the middle part of pressing from both sides tight arm, press from both sides tight arm and constitute the curved boom form by the radial arm of sloping down and vertical tongs arm that link as an organic whole, three tongs arm group becomes around the tongs of centre gripping circle, horizontal axis gyro wheel is equipped with to the inner end of the arm of sloping down, the gyro wheel is arranged in last disc periphery spout and constitutes the movable fit.

During operation, when the upper disc and the lower disc are driven to move vertically relatively, the declination arm drives the grabbing arm to swing around the hinge point at the middle part under the restraint of the upper disc and the lower disc of the upper disc, so that the distance between the lower end of the declination arm and the center of a clamping circle is changed: when the radius of the clamping circle is reduced, the clamping circle is clamped, and when the radius of the clamping circle is increased, the clamping circle is released.

Compared with the prior art, the clamping action of the utility model is realized by the relative vertical movement of the upper disc and the lower disc, and the radial driving is not needed, so the structure is compact; and the structure that the upper plate and the lower plate restrain the idler wheels at the inner ends of the clamping arms not only enables the moving pair and the hinge pair to be combined, the mechanism is obviously simplified, but also can effectively avoid clamping stagnation, and ensures the stability and reliability of clamping.

Furthermore, a telescopic support comprising an upper support leg and a lower support leg is fixedly connected with the upper disc, and the upper support leg and the lower support leg form a vertical moving pair.

Furthermore, the upper supporting leg is in a pi shape, the vertical long grooves on two sides of the upper supporting leg are respectively in movable fit with the guide pin on the connecting plate, and the lower part of the connecting plate is fixedly connected with the lower supporting leg.

Furthermore, the lower supporting leg of the telescopic support is fixedly connected with the upper disc, the upper end of the actuator support is hinged with the linear actuator base, and the lower end of the actuator support is fixedly connected with the upper disc.

Furthermore, the lower end of the upper disc is provided with a central convex ring extending downwards, the upper end of the lower disc is provided with a central recess, and the central convex ring is inserted into the central recess to form a moving pair.

Further, the lower disk is provided with three radial plates which are uniformly distributed in the circumferential direction, and the radial plates fix the fixing arms which extend in the radial direction through the radial long grooves.

Furthermore, a limiting rod which is adjustably locked through threads and penetrates through the lower disc is fixed on the lower surface of the upper disc.

Further, a sensor trigger plate is arranged on the limiting rod; the upper part of the lower disc is provided with a closing sensor, and the lower surface of the lower disc is provided with a material positioning sensor; an opening sensor is arranged between the upper disc and the lower disc.

Drawings

The technical solution of the present invention is further explained with reference to the accompanying drawings.

Fig. 1 is a schematic view of a system structure of the gripping device of the present invention.

Fig. 2 is a schematic structural diagram of an embodiment of the present invention.

Fig. 3 is a side view of fig. 2.

Fig. 4 is a top view of fig. 2.

Fig. 5 is a schematic view of the structure of the gripper of the embodiment of fig. 2.

Fig. 6 is a structural diagram illustrating a grabbing state of the embodiment in fig. 2.

In the figure: the device comprises a material storage table 60, a truss manipulator 70, a steel drum 80, a control cabinet 90 and a circular material mechanical grabbing device 100; the device comprises a limiting rod 1, a positioning sensor 2, a gripper 3, a telescopic support 4, a grabbing sensor 5, an electrical appliance junction box 6, a linear actuator 7, an upper disc 8, an actuator support 9, a lower disc 10, an opening sensor 11 and a closing sensor 12; clamping arm 301, fixing arm 302, support pin 303, roller 304, roller pin 305; a lower leg 401, a connecting plate 402, an upper leg 404.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

The circular material mechanical gripping device of the embodiment is applied to the polluting solid waste transfer system shown in fig. 1. The system comprises a steel barrel transmission roller way 80 and a material storage table 60 which are spaced from each other, a truss which is formed by guide rail cross beams supported on upright posts at two ends is arranged above the transmission roller way 80 and the material storage table 60, a manipulator 70 which can move horizontally is arranged on the truss, and the manipulator 70 is provided with a lifting arm of which the lower end is provided with a circular material mechanical grabbing device 100.

The specific structure of the circular material mechanical gripping device 100 is shown in fig. 2 to fig. 6, and includes a telescopic bracket 4 whose upper end is fixedly connected with the lifting arm, the vertical long slots on two sides of an upper leg 404 of the telescopic bracket 4 in a pi shape are respectively in movable fit with the guide pins on a connecting plate 402, and the lower part of the connecting plate 402 is fixedly connected with a lower leg 401 by a fastener, so that the upper leg 404 and the lower leg 401 form a vertical moving pair. The grabbing sensor 5 is arranged on one side of the upper leg 404 of the telescopic bracket 4.

The lower end of the lower support leg 4-1 of the telescopic support 4 is fixedly connected with the upper disc. The upper end of the actuator bracket 9 is hinged with the upper end of a seat body of a linear actuator 7 (IA 5-230-20-B-102-B of MOTECK company), the lower end is fixedly connected with an annular upper disc 8, and a push rod of the linear actuator 7 penetrates through the upper disc 8 and then is fixedly connected with the center of a lower disc 10. The lower end of the upper disc 8 is provided with a central convex ring 8-1 which extends downwards, the upper end of the lower disc 10 is provided with a central concave 10-1, and the central convex ring 8-1 is inserted into the central concave 10-1 to form a moving pair, so that the stability and reliability of the relative motion of the upper disc 8 and the lower disc 10 can be ensured.

Three circumferentially uniformly distributed radial plates 306 of the lower disc 10 are respectively used for fixing three fixing arms 302 which radially extend through radial long grooves, the outer ends of the fixing arms 302 are hinged with the middle parts of the clamping arms 301 through supporting pin shafts 303 which are used as lever fulcrums, the clamping arms 301 are in a bent arm shape formed by integrally connected radial downward-inclined arms and vertical gripper arms, the three gripper arms form grippers 3 which surround a clamping circle, and the radial extending positions of the fixing arms 302 are adjusted as required, so that the clamping circle radius of the gripper arms 3 can be adjusted, and the clamping device is suitable for grabbed objects of different specifications. The inner end of the declination arm of the clamping arm 301 is provided with a roller 305 through a horizontal roller pin shaft 305, and the roller 305 is positioned in the peripheral sliding groove of the upper disc to form movable fit.

In addition, the lower surface of the upper disc 8 is fixed with three limiting rods 1 which penetrate through the lower disc 10 and are adjustably locked through threads, and the limiting rods 1 are provided with sensor trigger plates. The upper part of the lower disc 10 is provided with a closing sensor 12, and the lower surface is provided with a material positioning sensor 2. An opening sensor 11 is arranged between the upper disc 8 and the lower disc 10. An electric junction box 6 is arranged on the actuator bracket 9, and an anti-skid brake is arranged on the actuator.

The steel drum of the polluting solid waste transfer system adopting the circular material mechanical gripping device (hereinafter referred to as gripping device) of the embodiment, which is positioned on the roller way, and the truss manipulator which can be arranged above the material storage table and the steel drum can be intelligent robots with autonomous navigation or other automatic machines which move along the guide rails. The gripping device is driven by a drive assembly arranged on the truss manipulator. The power source of the driving assembly is derived from a servo motor reducer, gear and rack transmission is adopted, and a roller guide rail is used as a guide piece. In order to ensure safety, the truss manipulator is also provided with a brake system for preventing objects from falling. These are similar to the prior art and will not be described in detail.

When in work, the complete control process from grabbing to releasing is as follows:

1) the lifting arm of the truss manipulator drives the gripping device to move downwards until the mounting screw of the material in-place sensor touches the upper plane of the barrel cake, and the material in-place sensor is triggered to send a material in-place signal;

2) the truss manipulator drives the upper support leg of the telescopic support to continuously move downwards until a grabbing sensor at one side of the upper support leg is triggered to send a stop signal, and the truss manipulator stops moving;

3) the push rod of the linear actuator generates a trend of extending to push the lower disc, the lower disc cannot move due to the fact that materials are arranged below the lower disc, the base of the linear actuator drives the upper disc to move upwards, the vertical distance between the upper disc and the lower disc is increased, the clamping arm swings around the hinged point of the clamping arm by the roller restrained by the upper disc, and the gripper closes and clamps round materials (barrel cakes);

4) the closing sensor sends a clamping in-place signal, and the linear actuator stops acting;

5) the truss manipulator drives the gripping device and the material to ascend, and after the material leaves the storage table, the supporting legs return to an extending state under the action of gravity to finish gripping;

6) the truss manipulator carries the grabbed materials to be horizontally conveyed to the position above the empty steel barrel along the truss, then the lifting arm descends, and the materials enter the empty barrel;

7) stopping when the material touches the inner bottom surface of the empty barrel, driving the upper support leg of the telescopic bracket to continuously move downwards by the truss manipulator until a grabbing sensor at one side of the upper support leg is triggered to send a stop signal, and stopping the movement of the truss manipulator;

8) the push rod of the linear actuator retracts, the lower disc cannot move because the gripping device is in a state of clamping round materials (barrel cakes), the base of the linear actuator drives the upper disc to move downwards under the action of a reaction force, the vertical distance between the upper disc and the lower disc is reduced, the roller wheel constrained by the upper disc enables the clamping arm to reversely swing around the hinged point, and the gripper is unfolded to release the round materials (barrel cakes);

9) after the downward moving stroke of the lower support leg of the telescopic support is finished, the upper disc stops moving, the lower disc starts to move upwards, the grabbing arm continues to open until the opening sensor is triggered, and a stop signal is sent out to stop the linear actuator;

10) the truss manipulator drives the grabbing device to move out of the empty barrel, and the grabbing operation to the released round material transferring and barrel filling operation is completed.

Theories and experiments show that the embodiment has the following remarkable advantages:

1. the linear actuator drives the upper and lower discs which can move relatively to each other, so that the clamping arms can generate required closing and opening actions to reliably clamp round materials;

2. the telescopic bracket is skillfully adopted to replace the traditional integral bracket, so that the upper disc and the lower disc can conveniently realize the required relative motion;

3. the linear actuator is organically combined with the lifting arm of the truss manipulator, when the material and the gripping device are limited and do not move any more, the upper truss manipulator still enables the upper support leg to move downwards to provide material in-place signal feedback, and a foundation is laid for a control system to realize full-automatic control without the assistance of human eyes or cameras;

4. all the sensors which are scientifically arranged provide guarantee for the control system to realize full-automatic control of the grabbing action;

5. the structure is compact, remote control can be performed, the working efficiency is obviously improved, and the operation safety is ensured;

6. the adjustable links are arranged at multiple positions, so that the device can adapt to round materials of different specifications and sizes, and the applicability is obviously enhanced.

In addition to the above embodiments, other embodiments of the present invention are also possible. All the technical schemes obtained by adopting equivalent substitution or equivalent transformation are within the protection scope required by the utility model.

Claims (8)

1. The utility model provides a circular material mechanical grabbing device which characterized in that: the device comprises an actuator support (9) for arranging a linear actuator (7) capable of extending and retracting vertically, wherein the actuator support (9) is fixedly connected with an annular upper disc (8), and a push rod of the linear actuator penetrates through the upper disc to be fixedly connected with the center of a lower disc (10);

the fixed three fixed arm (302) of radial extension of disc circumference equipartition down, the outer end of fixed arm is articulated with the middle part of pressing from both sides tight arm (301), press from both sides tight arm and constitute the curved boom form by the radial arm of sloping down and vertical tongs arm as an organic whole even, three tongs arm component is around centre gripping circle (3), horizontal axis gyro wheel (304) are equipped with to the inner end of the arm of sloping down, the gyro wheel is arranged and constitutes the movable fit in the circular spout of last disc.

2. The mechanical circular material grabbing device of claim 1, characterized in that: a telescopic support (4) comprising an upper support leg (404) and a lower support leg (401) is fixedly connected with the upper disc, and the upper support leg and the lower support leg form a vertical moving pair.

3. The mechanical circular material gripping device according to claim 2, characterized in that: the upper supporting leg is in a pi shape, the vertical long grooves on two sides of the upper supporting leg are respectively in movable fit with the guide pin on the connecting plate, and the lower part of the connecting plate is fixedly connected with the lower supporting leg.

4. The mechanical circular material grabbing device of claim 3, characterized in that: the lower supporting leg of the telescopic support is fixedly connected with the upper disc, the upper end of the actuator support is hinged with the linear actuator base, and the lower end of the actuator support is fixedly connected with the upper disc.

5. The mechanical circular material grabbing device of claim 4, characterized in that: the lower end of the upper disc is provided with a central convex ring extending downwards, the upper end of the lower disc is provided with a central recess, and the central convex ring is inserted into the central recess to form a moving pair.

6. The mechanical circular material grabbing device of claim 5, characterized in that: the lower disk is provided with three radial plates which are uniformly distributed in the circumferential direction, and the radial plates fix the fixing arms which extend in the radial direction through the radial long grooves.

7. The mechanical circular material grabbing device of claim 6, characterized in that: and a limiting rod which is adjustably locked through threads and penetrates through the lower disc is fixed on the lower surface of the upper disc.

8. The mechanical circular material grabbing device of claim 7, characterized in that: a sensor trigger plate is arranged on the limiting rod; the upper part of the lower disc is provided with a closing sensor, and the lower surface of the lower disc is provided with a material positioning sensor; an opening sensor is arranged between the upper disc and the lower disc.

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