CN112850525A

CN112850525A - Motion limiting protection device for automobile crane

Info

Publication number: CN112850525A
Application number: CN202011633163.5A
Authority: CN
Inventors: 王兴贤
Original assignee: Xiangshan Zhongyu Mould Co ltd
Current assignee: Xiangshan Zhongyu Mould Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-05-28

Abstract

The invention relates to the technical field of cranes and discloses a motion-limiting protection device for an automobile crane, which comprises a shell, wherein the inner side of the shell is movably connected with a rotating shaft, the outer part of the rotating shaft is fixedly connected with a first rotating disk, the inner part of the first rotating disk is movably connected with a movable rod, the inner part of the first rotating disk is movably connected with a baffle plate, the inner part of the first rotating disk is provided with an electrorheological body, the inner side of the shell is movably connected with a roller, the inner part of the roller is movably connected with a second rotating disk, the inner part of the second rotating disk is fixedly connected with an N pole, the inner part of the second rotating; through the interaction among the rotating shaft, the first rotating disc, the movable rod, the baffle, the current variant and the second rotating disc, when the crane normally lifts and puts down a heavy object, other structures cannot obstruct the movement of the steel wire rope on the idler wheel, so that the crane can normally work without influencing the maintenance of a user on the steel wire rope.

Description

Motion limiting protection device for automobile crane

Technical Field

The invention relates to the technical field of cranes, in particular to a motion limiting protection device for an automobile crane.

Background

A truck crane, also called as an automobile crane, is a crane arranged on a common automobile chassis or a special automobile chassis, and a driving cab and a hoisting control cab of the crane are arranged separately. The crane has the advantages of good maneuverability and rapid transfer.

The truck-mounted crane is generally provided with an extensible telescopic arm and a steel wire rope for pulling goods, the steel wire rope is generally wound and unwound by a winding disc, the direction of the steel wire rope is changed by a fixed pulley far away from one end of a vehicle body, so that the purpose of lifting the goods is achieved, but the steel wire rope of the conventional truck-mounted crane is frequently used, especially under the condition of no proper lubrication, the fatigue weakening of a steel wire rope or a sling bearing member is caused, part of the steel wire rope repeatedly wound on a chain wheel is abraded due to repeated winding once and again, if the steel wire rope is not maintained, when the speed of the steel wire rope is too high in the process of lifting the goods by the truck-mounted crane, the goods can be stalled and descend, and the steel wire rope can move at a high speed under the action of the gravity of the goods, so that the steel wire rope can be suddenly, Damage equipment and cause personal injury.

Therefore, in order to solve the problems, a motion-limiting protection device for the automobile crane is needed.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a motion-limiting protection device for an automobile crane, which has the advantage of limiting the motion of a steel wire rope when the steel wire rope is suddenly broken, and solves the problems that a heavy object falls off, equipment is damaged and personal injury is caused when the steel wire rope is broken.

(II) technical scheme

In order to achieve the purpose of limiting the movement of the steel wire rope when the steel wire rope is suddenly broken, the invention provides the following technical scheme: the utility model provides a limit protection device for mobile crane, which comprises an outer shell, the inboard swing joint of shell has the pivot, the outside fixedly connected with carousel I of pivot, the inside swing joint of carousel I has the movable rod, the inside swing joint of carousel I has the baffle, the inside of carousel I is provided with the current variant, the inboard swing joint of shell has the gyro wheel, the inside swing joint of gyro wheel has carousel II, the inside fixedly connected with N utmost point of carousel II, the inside fixedly connected with S utmost point of carousel II, the inside swing joint of carousel II has the connecting rod, the outside swing joint of carousel II has the ring gear, the inboard swing joint of ring gear has connecting rod I, the one end swing joint that ring gear was kept away from to connecting rod I has the slide bar, the outside fixedly connected.

Preferably, the inside swing joint of carousel one has spring one, the inside at the movable rod of one end fixed connection that carousel one was kept away from to spring one, the movable rod is no less than five and the inside of waiting angular distribution at carousel one, the inside of carousel one is provided with the electric wire, the inside fixedly connected with of carousel one leads electrical pillar, it has two to lead electrical pillar, it passes through electric wire connection to lead electrical pillar between the adjacent movable rod, in normal rotational speed within range, carousel one rotates and makes the movable rod motion, the elasticity that spring one can be overcome to the movable rod moves to the outside, but movable rod and connecting rod contactless this moment, when wire rope speed exceeded normal range, the elasticity that spring one was overcome to the movable rod moves to the outside, the movable rod can contact with the connecting rod and drive carousel two moves together this moment.

Preferably, the outer portion of the baffle is fixedly connected with a second spring, one end, far away from the baffle, of the second spring is fixedly connected to the inner portion of the first rotating disc, the main materials of the electrorheological body are gypsum, lime, carbon powder and olive oil, and the movable rod and the first spring are movably connected to the inner portion of the electrorheological body.

Preferably, the specification and the position phase-match of the N utmost point and the S utmost point, the specification phase-match and the position of connecting rod and movable rod are corresponding, and the outside swing joint of connecting rod has spring three, and the one end fixed connection that the connecting rod was kept away from to spring three is in the inside of carousel two, and the outside fixedly connected with bar copper of connecting rod, the specification phase-match of bar copper and the N utmost point and the S utmost point, a single N utmost point, the S utmost point, connecting rod, bar copper constitute an electromagnetic induction subassembly.

Preferably, the surface of the second rotary table is provided with grooves, the grooves are distributed on the surface of the second rotary table at equal angles and are not less than five, the electromagnetic induction assemblies and the grooves are the same in number and correspond in position, the grooves are matched with the movable rods in specification, teeth are arranged on the surface of the second rotary table and are matched with the gear ring in specification, and the second rotary table is matched with the movable rods in specification.

Preferably, the spout has been seted up to the inside of gyro wheel, and slide bar sliding connection is inboard at the spout, and the outside swing joint of slide bar has connecting rod two and connecting rod three, and the equal swing joint of one end that the slide bar was kept away from to connecting rod two and connecting rod three is in the inboard of friction disc, the inboard fixedly connected with clutch blocks of shell, and the clutch blocks has four and symmetric distribution in the inboard of shell, and the specification phase-match of clutch blocks and friction disc, friction disc are no less than five and equal angular distribution in the outside of gyro wheel.

Preferably, the roller is fixedly connected to the outer portion of the rotating shaft, the conductive column is electrically connected with an external power supply, and the copper bar and the external power supply are both electrically connected with the control center.

(III) advantageous effects

Compared with the prior art, the invention provides a motion-limiting protection device for an automobile crane, which has the following beneficial effects:

1. this a restriction protection device for mobile crane through the interact between pivot, carousel one, movable rod, baffle, electrorheological body and the carousel two, when the hoist normally lifts by crane and puts down the heavy object, other structures can not cause the hindrance to the motion of wire rope on the gyro wheel for the work that the hoist can be normal does not influence user's maintenance and maintenance to wire rope.

2. This a restriction protection device for mobile crane, through the interact between all structures, can be when wire rope's speed is too fast, restrict wire rope's speed, avoid wire rope's speed too fast for the quick whereabouts of the heavy object of hoisting, and then cause article impaired, restrict wire rope's speed simultaneously, also can avoid wire rope because the too fast emergence fracture of speed, protect subaerial personnel and article, reduce user's loss.

Drawings

FIG. 1 is a schematic view showing the connection between the housing and the roller according to the present invention;

FIG. 2 is a schematic view of the connection relationship among the housing, the rotating shaft, the first rotating disk, the movable rod, the second rotating disk, the gear ring, the sliding rod and the friction plate;

FIG. 3 is a schematic view of the connection among the rotating shaft, the first rotating disk, the movable rod and the second rotating disk according to the present invention;

FIG. 4 is an enlarged view taken at A in FIG. 3 according to the present invention;

FIG. 5 is an enlarged view of the invention at B of FIG. 3;

FIG. 6 is a schematic view of the connection relationship among the gear ring, the first connecting rod, the sliding rod and the friction plate.

In the figure: 1. a housing; 2. a rotating shaft; 3. a first rotating disc; 4. a movable rod; 5. a baffle plate; 6. an electrorheological fluid; 7. a roller; 8. a second rotating disc; 9. an N pole; 10. an S pole; 11. a connecting rod; 12. a ring gear; 13. a first connecting rod; 14. a slide bar; 15. a friction plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, a motion-limiting protection device for an automobile crane comprises a housing 1, a rotating shaft 2 is movably connected to the inner side of the housing 1, a first rotating disk 3 is fixedly connected to the outer portion of the rotating shaft 2, a first spring is movably connected to the inner portion of the first rotating disk 3, one end of the first spring, which is far away from the first rotating disk 3, is fixedly connected to the inner portion of the movable rod 4, the movable rods 4 are distributed in the first rotating disk 3 at equal angles, electric wires are arranged in the first rotating disk 3, two conductive posts are fixedly connected to the inner portion of the first rotating disk 3, the conductive posts between adjacent movable rods 4 are connected through electric wires, the first rotating disk 3 rotates to enable the movable rods 4 to move within a normal rotating speed range, the movable rods 4 can overcome the elastic force of the first spring to move outwards, but the movable rods 4 are not in contact with a connecting, the movable rod 4 overcomes the elastic force of the first spring to move outwards, and at the moment, the movable rod 4 can be in contact with the connecting rod 11 and drive the second rotating disc 8 to move together; the inside swing joint of carousel 3 has movable rod 4, the inside swing joint of carousel 3 has baffle 5, the outside fixedly connected with spring two of baffle 5, the one end fixed connection that baffle 5 was kept away from to spring two is in the inside of carousel 3, the main material of electrorheological body 6 is gypsum, lime, carbon powder and olive oil, movable rod 4 and spring one all swing joint are in the inside of electrorheological body 6, in normal rotational speed within range, carousel 3 rotates and makes movable rod 4 move, the elasticity that spring one can be overcome to movable rod 4 moves to the outside, but movable rod 4 and connecting rod 11 contactless this moment, when wire rope speed exceeded normal range, the elasticity that spring one was overcome to movable rod 4 moves to the outside, movable rod 4 can contact with connecting rod 11 and drive carousel two 8 and move together.

The inside of the first rotating disk 3 is provided with an electrorheological body 6, the inner side of the outer shell 1 is movably connected with a roller 7, the inside of the roller 7 is provided with a sliding groove, a sliding rod 14 is connected to the inner side of the sliding groove in a sliding manner, the outside of the sliding rod 14 is movably connected with a second connecting rod and a third connecting rod, one ends, far away from the sliding rod 14, of the second connecting rod and the third connecting rod are both movably connected to the inner side of a friction plate 15, the inner side of the outer shell 1 is fixedly connected with four friction blocks, the four friction blocks are symmetrically distributed on the inner side of the outer shell 1, the specifications of the friction; the inner part of the roller 7 is movably connected with a second rotating disk 8, the surface of the second rotating disk 8 is provided with grooves, the number of the grooves is not less than five, the grooves are distributed on the surface of the second rotating disk 8 at equal angles, the electromagnetic induction assemblies and the grooves are the same in number and correspond in position, the grooves are matched with the specifications of the movable rod 4, the surface of the second rotating disk 8 is provided with teeth, the teeth are matched with the specifications of the gear ring 12, and the specifications of the second rotating disk 8 are matched with the specifications of the movable rod 4; the inside fixedly connected with N of carousel two 8 extremely 9, the specification and the position phase-match of N utmost point 9 and S utmost point 10, connecting rod 11 and movable rod 4' S specification phase-match and position are corresponding, the outside swing joint of connecting rod 11 has spring three, the one end fixed connection that connecting rod 11 was kept away from to spring three is in the inside of carousel two 8, the outside fixedly connected with bar copper of connecting rod 11, the specification phase-match of bar copper and N utmost point 9 and S utmost point 10, a single N utmost point 9, S utmost point 10, connecting rod 11, an electromagnetic induction subassembly is constituteed to the bar copper.

An S pole 10 is fixedly connected to the inside of the second rotary table 8, a connecting rod 11 is movably connected to the inside of the second rotary table 8, a gear ring 12 is movably connected to the outside of the second rotary table 8, a first connecting rod 13 is movably connected to the inner side of the gear ring 12, a sliding rod 14 is movably connected to one end, far away from the gear ring 12, of the first connecting rod 13, a friction plate 15 is fixedly connected to the outside of the sliding rod 14, the roller 7 is fixedly connected to the outside of the rotating shaft 2, the conductive column is electrically connected with an external power supply, and both; through the interaction among the rotating shaft 2, the first rotating disc 3, the movable rod 4, the baffle 5, the electrorheological body 6 and the second rotating disc 8, when the crane normally lifts and puts down a heavy object, other structures cannot obstruct the movement of the steel wire rope on the roller 7, so that the crane can normally work, and the maintenance of a user on the steel wire rope is not influenced; through the interact between all structures, can be when wire rope's speed is too fast, restrict wire rope's speed, avoid wire rope's speed too fast for the quick whereabouts of the heavy object of hoisting, and then cause article impaired, restrict wire rope's speed simultaneously, also can avoid wire rope because the too fast fracture that takes place of speed, protect subaerial personnel and article, reduce user's loss.

The working principle is that when the device is started, when the vehicle-mounted crane normally lifts goods, the steel wire rope moves to drive the roller 7 to rotate, the roller 7 rotates to drive the rotating shaft 2 to rotate, the rotating shaft 2 rotates to drive the rotating disc I3 to rotate, the movable rod 4 overcomes the elastic force of the spring I to move outwards under the action of centrifugal force, the movable rod 4 moves to compress the spring I, the movable rod 4 extrudes the electrorheological body 6, the electrorheological body 6 can drive the baffle 5 to move, the baffle 5 moves to compress the spring II, the movable rod 4 does not contact with the connecting rod 11 at the moment, when the speed of the steel wire rope exceeds a normal range due to an accident condition in the process of lifting the goods, the movable rod 4 overcomes the elastic force of the spring I to move outwards under the action of the centrifugal force, but the movable rod 4 can contact with the connecting rod 11 at the moment, the movable rod 4, the connecting rod 11 moves to drive the copper rod to move, the copper rod can cut a magnetic induction line between the N pole 9 and the S pole 10 and generate induction current inside the copper rod, at the moment, the control center controls the external power supply to electrify the conductive columns, the conductive columns are electrified to enable the current variant 6 to become solid, the solid current variant 6 can limit the movement of the movable rod 4 and the spring I, the movable rod 4 moves to enable the rotary plate II 8 to move, the rotary plate II 8 drives the gear ring 12 to move under the action of teeth, the gear ring 12 moves to drive the connecting rod I13 to move, the connecting rod I13 moves to drive the sliding rod 14 to move, the sliding rod 14 moves to drive the friction plate 15 to move, the movement of the steel wire rope is blocked under the action of the friction plate 15 and the friction block.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A motion-limiting protection device for mobile cranes, comprising a casing (1), characterized in that: the inner side of the shell (1) is movably connected with a rotating shaft (2), the outer part of the rotating shaft (2) is fixedly connected with a first rotating disc (3), the inner part of the first rotating disc (3) is movably connected with a movable rod (4), the inner part of the first rotating disc (3) is movably connected with a baffle plate (5), the inner part of the first rotating disc (3) is provided with an electrorheological body (6), the inner side of the shell (1) is movably connected with a roller (7), the inner part of the roller (7) is movably connected with a second rotating disc (8), the inner part of the second rotating disc (8) is fixedly connected with an N pole (9), the inner part of the second rotating disc (8) is fixedly connected with an S pole (10), the inner part of the second rotating disc (8) is movably connected with a connecting rod (11), the outer part of the second rotating disc (8) is movably connected with a gear ring (12), the inner, the outer part of the sliding rod (14) is fixedly connected with a friction plate (15).

2. A motion-limiting protection device for mobile cranes according to claim 1, characterized in that: the inside swing joint of carousel (3) has spring one, and the one end fixed connection that carousel (3) were kept away from to spring one is in the inside of movable rod (4), and movable rod (4) are no less than five and when the inside of angular distribution in carousel (3), and the inside of carousel (3) is provided with the electric wire, and the inside fixedly connected with of carousel (3) leads electrical pillar, leads electrical pillar and has two, leads electrical pillar between adjacent movable rod (4) and passes through the connection of electric lines.

3. A motion-limiting protection device for mobile cranes according to claim 1, characterized in that: the outer portion of the baffle plate (5) is fixedly connected with a second spring, one end, far away from the baffle plate (5), of the second spring is fixedly connected to the inner portion of the first rotating disc (3), main materials of the current transformer (6) are gypsum, lime, carbon powder and olive oil, and the movable rod (4) and the first spring are movably connected to the inner portion of the current transformer (6).

4. A motion-limiting protection device for mobile cranes according to claim 1, characterized in that: the specification phase-match and the position of the N utmost point (9) and the S utmost point (10) are corresponding, the specification phase-match and the position of connecting rod (11) and movable rod (4) are corresponding, the outside swing joint of connecting rod (11) has spring three, the one end fixed connection that connecting rod (11) were kept away from to spring three is in the inside of carousel two (8), the outside fixedly connected with bar copper of connecting rod (11), the specification phase-match of bar copper and N utmost point (9) and S utmost point (10), single N utmost point (9), the S utmost point (10), connecting rod (11), an electromagnetic induction subassembly is constituteed to the bar copper.

5. A motion-limiting protection device for mobile cranes according to claim 1, characterized in that: the surface of the second rotating disk (8) is provided with grooves, the grooves are distributed on the surface of the second rotating disk (8) at equal angles and are not less than five, the electromagnetic induction assemblies and the grooves are the same in number and correspond in position, the grooves are matched with the movable rod (4) in specification, teeth are arranged on the surface of the second rotating disk (8), the teeth are matched with the gear ring (12) in specification, and the second rotating disk (8) is matched with the movable rod (4) in specification.

6. A motion-limiting protection device for mobile cranes according to claim 1, characterized in that: the spout has been seted up to the inside of gyro wheel (7), slide bar (14) sliding connection is inboard at the spout, the outside swing joint of slide bar (14) has two and three connecting rods, the equal swing joint of one end of slide bar (14) is kept away from to two and three connecting rods in the inboard of friction disc (15), the inboard fixedly connected with clutch blocks of shell (1), the clutch blocks has four and symmetric distribution in the inboard of shell (1), the specification phase-match of clutch blocks and friction disc (15), friction disc (15) are no less than five and equal angular distribution in the outside of gyro wheel (7).

7. A motion-limiting protection device for mobile cranes according to claim 1, characterized in that: gyro wheel (7) fixed connection is in the outside of pivot (2), leads electrical pillar and external power source electricity and connects, and bar copper, external power source all are connected with the control maincenter electricity.