CN109051770B - Automatic loading and unloading machine for container - Google Patents

Automatic loading and unloading machine for container Download PDF

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Publication number
CN109051770B
CN109051770B CN201810728470.8A CN201810728470A CN109051770B CN 109051770 B CN109051770 B CN 109051770B CN 201810728470 A CN201810728470 A CN 201810728470A CN 109051770 B CN109051770 B CN 109051770B
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plate
cylinder
support
steering
rear cylinder
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CN201810728470.8A
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CN109051770A (en
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邱爱玲
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Open up electricity equipment Co.,Ltd. in Xuzhou
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Open Up Electricity Equipment Co ltd In Xuzhou
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Publication of CN109051770A publication Critical patent/CN109051770A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G47/00Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/74Feeding, transfer, or discharging devices of particular kinds or types
    • B65G47/90Devices for picking-up and depositing articles or materials
    • B65G47/91Devices for picking-up and depositing articles or materials incorporating pneumatic, e.g. suction, grippers
    • B65G47/912Devices for picking-up and depositing articles or materials incorporating pneumatic, e.g. suction, grippers provided with drive systems with rectilinear movements only

Abstract

The invention provides an automatic loading and unloading machine for containers, which comprises a telescopic mechanism, a lifting mechanism and a steering mechanism, and is characterized in that: the front cylinder pushes and pulls the two inner connecting rods which are hinged with the outer connecting rod, so that the double-parallelogram mechanism stretches and retracts to load and unload the container; the servo motor drives the gear rack to move through the RV reducer to realize the first layer lifting, the stepping motor drives the ball screw to move through the coupler to realize the second layer lifting, and containers can be conveyed in a larger range; the rear cylinder L11 generates a thrust action, the rear cylinder R14 generates a pulling force, and double cylinders are adopted for controlling and positioning, so that power output and rotation precision can be guaranteed. Container loaders are one of the most widely used high-end transport handling equipment in various transportation areas today.

Description

Automatic loading and unloading machine for container
Technical Field
The invention relates to port automatic loading and unloading equipment, in particular to an automatic container loading and unloading machine.
Background
The container automatic loading and unloading transportation has great superiority, has wide application field, not only has wide application in land transportation, but also has wide application in ports and wharfs. The invention provides an automatic container loading and unloading machine aiming at the problems of long time, low efficiency, high labor intensity and the like in the container loading and unloading process and aiming at improving the container loading and unloading mode.
Disclosure of Invention
In order to solve the problems, the invention provides an automatic container loading and unloading machine which is divided into a front section telescopic mechanism, a middle lifting mechanism and a rear end steering mechanism, can better improve the working efficiency and reduce the labor force of workers.
The technical scheme adopted by the invention is as follows: an automatic loading and unloading machine for containers is characterized in that: comprises a shovel supporting plate, an inner connecting rod, an outer connecting rod, an RV reducer, a servo motor supporting seat, a servo motor, a supporting plate A, a steering plate, a rear cylinder L joint, a rear cylinder L supporting plate, a rear cylinder L supporting seat, a steering connecting rod, a fixing plate, a rear cylinder R supporting seat, a rear cylinder R joint, a supporting rib plate, a rack, a supporting plate B, a gear, a connecting plate, a front linear bearing, a front light bar A, a front light bar supporting seat A, a front cylinder joint, a front cylinder supporting seat, a supporting plate C, a front light bar supporting seat B, a front light bar B, a three-phase joint, a bull's eye bearing, a vacuum chuck, a front plate, a stepping motor supporting seat, a coupler, a screw rod supporting seat, a rear light bar, a rear linear bearing, a ball screw rod pair, a rear light bar, the method is characterized in that: the telescopic mechanism consists of: the container comprises a vacuum chuck, a front plate, a bull eye bearing, a shovel supporting plate, a front polish rod A, a front polish rod support A, a front linear bearing, an outer connecting rod, a supporting plate C, an inner connecting rod, a three-phase joint, a front polish rod B, a front air cylinder joint and a front air cylinder, wherein the vacuum chuck is fixed on the front plate and used for adsorbing a container, the bull eye bearing is arranged at the lower end of the front plate and used for reducing the friction force between the front plate and the shovel supporting plate when the container is pushed and pulled, the front polish rod A is respectively arranged at the upper and lower positions of the rear end of the front plate and is fixed on the front plate through the front polish rod support A, one front linear bearing is arranged on each front polish rod A and connected with two outer connecting rods through the front linear bearing, the other ends of the two outer connecting rods are connected with the supporting plate C through a revolute pair, the other two inner connecting rods are connected with the rear end of the front plate, the other two phases of the three-phase joint are connected with the front light bar B through a sliding bearing, the other phase of the three-phase joint is connected with the front cylinder joint, the front cylinder is arranged on the support plate C through a front cylinder support, the cylinder rod of the front cylinder stretches to realize the folding and unfolding of the double-parallelogram mechanism, the double-parallelogram mechanism is connected with the front plate, and the front plate is provided with a vacuum chuck for adsorbing a container, so that the loading and unloading of the container are realized;
the lifting mechanism consists of: the lifting device comprises a connecting plate, a servo motor, a gear, a rack rear linear bearing A, a servo motor supporting seat, a rear linear bearing B, a rear feed bar support B, a support plate B, a rear feed bar B, RV reducer, a stepping motor, a ball screw pair, a stepping motor supporting seat, a coupler, a screw rod support, a rear feed bar A, a rear feed bar support A and a support plate A, and is divided into two layers, namely double lifting, the working space of the container automatic loading and unloading machine can be enlarged due to the design of the double lifting mechanism, a front section telescopic mechanism and a middle lifting mechanism are connected through the connecting plate, one layer of lifting mechanism close to the front section telescopic mechanism drives the gear to rotate by the servo motor, the gear moves on the rack to realize the lifting of the first layer of lifting mechanism, the servo motor is fixed on the connecting plate through the servo motor supporting seat, two rear linear bearings B respectively slide along the rear light bar B, the rear light bar B is arranged on a support plate C through a rear light bar support B, the RV reducer is connected at the output end of the servo motor to realize speed reduction, the output end of the RV reducer is connected with a gear, the gear and rack move to realize the lifting of a front section telescopic mechanism, a layer of lifting mechanism close to a rear end steering mechanism adopts a stepping motor to drive a ball screw pair to work to realize the lifting, the stepping motor is fixed on the support plate A through a stepping motor support seat, the output end of the stepping motor is connected with a coupler, the ball screw pair is connected at the other end of the coupler and arranged on the support plate A through a screw support seat, the two rear light bars A are arranged on the support plate A through the rear light bar support seat A, the rear linear bearings A and the ball screw pair are fixedly connected with the support plate, in conclusion, the lifting range can be expanded on the basis of the first layer of lifting mechanism;
the steering mechanism is composed of: the steering mechanism comprises a steering plate, a rear air cylinder L joint, a rear air cylinder L support plate, a rear air cylinder R joint, a support rib plate, a rear air cylinder R support, a fixed plate and a steering connecting rod, wherein the steering plate is connected with the lifting mechanism, the double air cylinders are adopted for realizing steering, the output end of the rear air cylinder L is hinged on the steering plate through the rear air cylinder L joint, the tail part of the rear air cylinder L is hinged on the rear air cylinder L support plate through the rear air cylinder L support, the rear air cylinder L support plate is hinged with the steering plate, the output end of the rear air cylinder R is hinged on the support rib plate through the rear air cylinder R support, the tail part of the rear air cylinder L is hinged on the fixed plate through the rear air cylinder R support, one ends of the two steering, the rear cylinder R generates a pulling force effect, and clockwise 90-degree steering of the mechanism is achieved.
Further a container automatic loading and unloading machine, its characterized in that: the vacuum chuck is made of PTFE.
Due to the adoption of the technical scheme, the invention has the following advantages: the front-section telescopic mechanism adopts a double-parallelogram mechanism to realize telescopic action, so that the carrying process is stable and the precision is high; the middle lifting mechanism adopts double lifting, so that the container can be carried in a wider range; the rear end steering mechanism adopts double cylinders to steer, the steering speed is high, and the efficiency is high.
Drawings
Fig. 1 is a schematic perspective view of the overall assembly of the present invention.
Fig. 2 is a front-end structural schematic diagram of the telescopic mechanism of the present invention.
FIG. 3 is a schematic view of the power output end of the telescopic mechanism of the present invention
Fig. 4 is a schematic diagram of an actuator of the telescopic mechanism of the present invention.
Fig. 5 is a schematic diagram of a second layer mechanism of the lifting mechanism.
Fig. 6 is a schematic view of a first layer mechanism of the lifting mechanism.
Reference numerals: 1-shoveling a supporting plate; 2-inner connecting rod; 3-an outer connecting rod; 4-RV reducer; 5-supporting the servo motor; 6-a servo motor; 7-support plate A; 8-a steering plate; 9-rear cylinder L joint; 10-the rear cylinder L; 11-rear cylinder L support plate; 12-rear cylinder L support; 13-a steering linkage; 14-a fixed plate; 15-rear cylinder R support; 16-the rear cylinder R; 17-rear cylinder R joint; 18-a support rib; 19-a rack; 20-support plate B; 21-a gear; 22-a connecting plate; 23-a front linear bearing; 24-front beam a; 25-front beam support a; 26-front cylinder joint; 27-a preceding cylinder; 28-front cylinder support; 29-support plate C; 30-front beam support B; 31-front beam B; 32-three phase connection; 33-bull's eye bearings; 34-vacuum chuck; 35-a front plate; 36-a stepper motor; 37-step motor supporting seat; 38-a coupling; 39-lead screw support; 40-rear beam; 41-rear linear bearing; 42-ball screw pair; 43-rear beam support; 44-rear linear bearing B; 45-rear beam B; 46-rear beam support B.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Examples
As shown in fig. 1, 2, 3, 4, 5 and 6, the container automatic loading/unloading machine is characterized in that: comprises a shovel supporting plate 1, an inner connecting rod 2, an outer connecting rod 3, an RV reducer 4, a servo motor supporting seat 5, a servo motor 6, a supporting plate A7, a steering plate 8, a rear cylinder L joint 9, a rear cylinder L10, a rear cylinder L supporting plate 11, a rear cylinder L supporting seat 12, a steering connecting rod 13, a fixing plate 14, a rear cylinder R supporting seat 15, a rear cylinder R16, a rear cylinder R joint 17, a supporting rib plate 18, a rack 19, a supporting plate B20, a gear 21, a connecting plate 22, a front linear bearing 23, a front light bar A24, a front light bar supporting seat A25, a front cylinder joint 26, a front cylinder 27, a front cylinder supporting seat 28, a supporting plate C29, a front light bar supporting seat B30, a front light bar B31, a three-phase joint 32, a bull eye bearing 33, a vacuum suction cup 34, a front plate 35, a stepping motor 36, a stepping motor supporting seat 37, a coupling 38, back linear bearing 41, ball 42, back polished bar support 43, back linear bearing B44, back polished bar B45, back polished bar support B46, its characterized in that: the telescopic mechanism consists of: the container loading and unloading device comprises a vacuum suction cup 34, a front plate 35, a bull eye bearing 33, a shovel supporting plate 1, a front light bar A24, a front light bar support A25, a front linear bearing 23, an outer connecting rod 3, a supporting plate C29, inner connecting rods 2, a three-phase joint 32, a front light bar B31, a front cylinder joint 26 and a front cylinder 27, wherein the vacuum suction cup 34 is fixed on the front plate 35 and used for adsorbing a container, the bull eye bearing 33 is arranged at the lower end of the front plate and used for reducing the friction force between the front plate 35 and the shovel supporting plate 1 when the container is pushed and pulled, the front light bar A24 is respectively arranged at the upper and lower positions of the rear end of the front plate 35 and is fixed on the front plate 35 through the front light bar support A25, the front linear bearing 23 is arranged on each front light bar A24 and connected with two outer connecting rods 3 through the front linear bearing 23, the other ends of the two outer connecting rods 3 are connected with the supporting plate C29 through a rotating pair, and the other two inner connecting rods, the other ends of the two inner connecting rods 2 are connected with a three-phase joint 32 so as to form a double-parallelogram mechanism, the other two phases of the three-phase joint 32 are connected with a front light bar B31 through a sliding bearing, the other phase of the three-phase joint is connected with a front cylinder joint 26, the front cylinder 27 is arranged on a supporting plate C29 through a front cylinder support 28, the cylinder rod of the front cylinder 27 extends and retracts so as to realize the folding and unfolding of the double-parallelogram mechanism, the double-parallelogram mechanism is connected with a front plate 35, and a vacuum suction cup 34 is arranged on the front plate 35 and is used for adsorbing a container so as to realize the loading and unloading of the;
the lifting mechanism consists of: the automatic loading and unloading device comprises a connecting plate 22, a servo motor 6, a gear 21, a rack 19 rear linear bearing A41, a servo motor 6, a servo motor support seat 5, a rear linear bearing B44, a rear feed bar support seat B46, a support plate B20, a rear feed bar B45, an RV reducer 4, a stepping motor 36, a ball screw pair 42, a stepping motor support seat 37, a coupler 38, a screw support seat 39, a rear feed bar A40, a rear feed bar support seat A43 and a support plate A7, and is divided into two layers, namely double lifting, the working space of the automatic loading and unloading device of the container can be enlarged due to the design of the double lifting mechanism, a front-section telescopic mechanism and a middle lifting mechanism are connected by the connecting plate 22, one layer of lifting mechanism close to the front-section telescopic mechanism drives the gear 21 to rotate by the servo motor 6, the gear 21 moves on the rack 19 to realize lifting of the first-layer, two rear linear bearings B44 are mounted at the rear end of the connecting plate 22, the two rear linear bearings B44 respectively slide along a rear light bar B45, the rear light bar B45 is mounted on a supporting plate C20 through a rear light bar support B46, the RV reducer 4 is connected at the output end of the servo motor 6 to realize speed reduction, the output end of the RV reducer 4 is connected with a gear 21, a rack 19 of the gear 21 moves to realize lifting of a front-section telescopic mechanism, a layer of lifting mechanism close to a rear-end steering mechanism adopts a stepping motor 36 to drive a ball screw pair 42 to work to realize lifting, the stepping motor 36 is fixed on a supporting plate A7 through a stepping motor support seat 37, the output end of the stepping motor is connected with a coupling 38, the ball screw pair 42 is connected at the other end of the coupling 38 and is mounted on a supporting plate A7 through a screw support seat 39, the two rear light bars A35, the rear linear bearing A41 and the ball screw assembly 42 are fixedly connected with the supporting plate B20, and the rear linear bearing A41 is slidably connected with the rear light bar A40, so that the lifting range can be expanded on the basis of the first-layer lifting mechanism;
the steering mechanism is composed of: the steering mechanism comprises a steering plate 8, a rear cylinder L10, a rear cylinder L joint 9, a rear cylinder L support 12, a rear cylinder L support plate 11, a rear cylinder R16, a rear cylinder R joint 17, a support rib plate 18, a rear cylinder R support 15, a fixing plate 14 and a steering connecting rod 13, wherein the steering plate 8 is connected with a lifting mechanism, the steering is realized by adopting double cylinders, the output end of a rear cylinder L10 is hinged on the steering plate 8 through the rear cylinder L joint 9, the tail part of the rear cylinder L10 is hinged on the rear cylinder L support plate 11 through the rear cylinder L support 12, the rear cylinder L support plate 11 is hinged with the steering plate 8, the output end of the rear cylinder R16 is hinged on the support rib plate 18 through the rear cylinder R joint 17, the tail part of the rear cylinder L support 15 is hinged on the fixing plate 14, one end of the two steering connecting rods 13 is hinged on the steering plate 8, the steering stability is ensured, the rear air cylinder L10 generates a thrust action, the rear air cylinder R16 generates a tension action, and the clockwise 90-degree steering of the mechanism is realized.
Further a container automatic loading and unloading machine, its characterized in that: the vacuum chuck 34 is made of PTFE.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
The working principle of the invention is as follows: the telescopic mechanism of the invention pushes and pulls the two inner connecting rods 2 through the front cylinder 27, the two inner connecting rods 2 are hinged with the outer connecting rod 3, so that the double-parallelogram mechanism is telescopic, the double-parallelogram mechanism is connected with the front plate 35, and the vacuum chuck 34 is arranged on the front plate 35 and is used for adsorbing a container, thereby realizing the loading and unloading of the container; the output end of a servo motor 6 in the lifting mechanism is connected with an RV reducer 4, the output end of the RV reducer 4 is connected with a gear 21 to enable the gear to move on a rack 19, two rear linear bearings B44 are mounted at the rear end of a connecting plate 22, the two rear linear bearings B44 slide along a rear polished rod B45 respectively to achieve first-layer lifting, the output end of a stepping motor 36 is connected with a coupler 38, the output end of the coupler 38 is connected with a ball screw pair 42, and the ball screw pair 42 and rear linear bearings 41 on two rear polished rods 40 beside the ball screw pair are connected with a supporting plate B, so that second-layer lifting can be achieved on the basis of first-layer lifting; the steering mechanism is connected with the supporting plate A through the steering plate 8, the rear air cylinder L10 generates a pushing force effect, the rear air cylinder R16 generates a pulling force to the left and right, the rear air cylinder L10 is hinged with the steering plate 8 to enable the steering plate 8 to rotate, the rear air cylinder R16 is hinged with the steering connecting rod 13 to enable the steering connecting rod 13 to rotate around the fixing plate 14, and steering is achieved.

Claims (2)

1. An automatic loading and unloading machine for containers is characterized in that: the hydraulic shovel comprises a shovel supporting plate (1), an inner connecting rod (2), an outer connecting rod (3), an RV reducer (4), a servo motor supporting seat (5), a servo motor (6), a supporting plate A (7), a steering plate (8), a rear cylinder L joint (9), a rear cylinder L (10), a rear cylinder L supporting plate (11), a rear cylinder L supporting seat (12), a steering connecting rod (13), a fixing plate (14), a rear cylinder R supporting seat (15), a rear cylinder R (16), a rear cylinder R joint (17), a supporting rib plate (18), a rack (19), a supporting plate B (20), a gear (21), a connecting plate (22), a front linear bearing (23), a front light bar A (24), a front light bar supporting seat A (25), a front cylinder joint (26), a front cylinder (27), a front cylinder supporting seat (28), a supporting plate C (29), a front light bar supporting seat B (30), a front light bar B (31), Three-phase joint (32), bull's eye bearing (33), vacuum chuck (34), front bezel (35), step motor (36), step motor supporting seat (37), shaft coupling (38), lead screw support (39), back polished rod (40), back linear bearing (41), ball screw is vice (42), back polished rod support (43), back linear bearing B (44), back polished rod B (45), back polished rod support B (46), its characterized in that: the telescopic mechanism consists of: the container lifting device comprises a vacuum chuck (34), a front plate (35), a bull eye bearing (33), a shovel support plate (1), a front polish rod A (24), a front polish rod support seat A (25), a front linear bearing (23), an outer connecting rod (3), a support plate C (29), an inner connecting rod (2), a three-phase joint (32), a front polish rod B (31), a front cylinder joint (26) and a front cylinder (27), wherein the vacuum chuck (34) is fixed on the front plate (35) and used for adsorbing a container, the bull eye bearing (33) is installed at the lower end of the front plate and used for reducing the friction force between the front plate (35) and the shovel support plate (1) when the container is pushed and pulled, the front polish rod A (24) is respectively installed at the upper and lower positions of the rear end of the front plate (35) and is fixed on the front plate (35) through the front polish rod support seat A (25), one front linear bearing (23) is installed on each front polish rod A (24), two outer connecting rods (3) are connected through a front linear bearing (23), the other ends of the two outer connecting rods (3) are connected with a supporting plate C (29) through a rotating pair, the other two inner connecting rods (2) are connected with the rear end of a front plate (35) through a rotating pair, the other ends of the two inner connecting rods (2) are connected with a three-phase joint (32) so as to form a double-parallelogram mechanism, the other two phases of the three-phase joint (32) are connected with a front light bar B (31) through a sliding bearing, the other phase of the three-phase joint is connected with a front cylinder joint (26), a front cylinder (27) is arranged on the supporting plate C (29) through a front cylinder support (28), the cylinder rod of the front cylinder (27) is stretched to realize the folding and unfolding of the double-parallelogram mechanism, the double-parallelogram mechanism is connected with the front plate (35), a vacuum suction cup (34) is arranged on the front plate (35), thereby realizing the loading and unloading of the container;
the lifting mechanism consists of: the automatic loading and unloading device comprises a connecting plate (22), a servo motor (6), a gear (21), a rack (19), a rear linear bearing A (41), a servo motor (6), a servo motor supporting seat (5), a rear linear bearing B (44), a rear feed bar supporting seat B (46), a supporting plate B (20), a rear feed bar B (45), an RV reducer (4), a stepping motor (36), a ball screw pair (42), a stepping motor supporting seat (37), a coupler (38), a screw rod supporting seat (39), a rear feed bar A (40), a rear feed bar supporting seat A (43) and a supporting plate A (7), and is divided into two layers, namely double lifting, the working space of the automatic loading and unloading device of the container can be enlarged due to the design of the double lifting mechanism, a front-section telescopic mechanism is connected with a middle lifting mechanism through the connecting plate (22), one layer of the lifting mechanism close to the front-section telescopic mechanism drives, the gear (21) moves on the rack (19) to realize the lifting of a first layer of lifting mechanism, the servo motor (6) is fixed on the connecting plate (22) through the servo motor supporting seat (5), two rear linear bearings B (44) are installed at the rear end of the connecting plate (22), the two rear linear bearings B (44) respectively slide along the rear light bar B (45), the rear light bar B (45) is installed on the supporting plate C (20) through the rear light bar supporting seat B (46), the RV reducer (4) is connected at the output end of the servo motor (6) to realize speed reduction, the output end of the RV reducer (4) is connected with the gear (21), the rack (19) of the gear (21) moves to realize the lifting of a front section telescopic mechanism, one layer of lifting mechanism close to the rear end steering mechanism adopts the stepping motor (36) to drive the ball screw pair (42) to work to realize the lifting, the stepping motor (36) is fixed on the supporting plate A (7) through the stepping motor supporting, the output end of the lifting mechanism is connected with a coupler (38), the ball screw pair (42) is connected to the other end of the coupler (38) and is installed on the supporting plate A (7) through a screw support (39), the two rear light bars A (40) are installed on the supporting plate A (7) through a rear light bar support A (43), the rear linear bearing A (41) and the ball screw pair (42) are fixedly connected with the supporting plate B (20), and the rear linear bearing A (41) is connected with the rear light bar A (40) in a sliding mode;
the steering mechanism is composed of: the steering mechanism comprises a steering plate (8), a rear cylinder L (10), a rear cylinder L joint (9), a rear cylinder L support (12), a rear cylinder L support plate (11), a rear cylinder R (16), a rear cylinder R joint (17), a support rib plate (18), a rear cylinder R support (15), a fixing plate (14) and a steering connecting rod (13), wherein the steering plate (8) is connected with a lifting mechanism, steering is realized by adopting double cylinders, the output end of the rear cylinder L (10) is hinged on the steering plate (8) through the rear cylinder L joint (9), the tail part is hinged on the rear cylinder L support plate (11) through the rear cylinder L support (12), the rear cylinder L support plate (11) is hinged with the steering plate (8), the output end of the rear cylinder R (16) is hinged on the support rib plate (18) through the rear cylinder R joint (17), and the tail part is hinged on the fixing plate (14) through the rear cylinder R support (15), one end of each of the two steering connecting rods (13) is hinged to the steering plate (8), and the other end of each of the two steering connecting rods is hinged to the fixing plate (14) to form a parallelogram structure, so that the steering stability is guaranteed, the rear cylinder L (10) generates a thrust effect, the rear cylinder R (16) generates a tension effect, and the clockwise 90-degree steering of the mechanism is realized.
2. A container handler as claimed in claim 1, characterised in that: the vacuum chuck (34) is made of PTFE.
CN201810728470.8A 2018-07-05 2018-07-05 Automatic loading and unloading machine for container Active CN109051770B (en)

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Application Number Priority Date Filing Date Title
CN201810728470.8A CN109051770B (en) 2018-07-05 2018-07-05 Automatic loading and unloading machine for container

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CN109051770A CN109051770A (en) 2018-12-21
CN109051770B true CN109051770B (en) 2020-06-30

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