CN216946000U

CN216946000U - Self-adaptive emergency braking device of crane

Info

Publication number: CN216946000U
Application number: CN202220799811.2U
Authority: CN
Inventors: 田影; 白岩
Original assignee: Siping Special Equipment Inspection Center
Current assignee: Siping Special Equipment Inspection Center
Priority date: 2022-04-08
Filing date: 2022-04-08
Publication date: 2022-07-12
Anticipated expiration: 2032-04-08

Abstract

The utility model discloses a self-adaptive emergency braking device of a crane, which comprises an installation box, wherein the inner wall of the installation box is respectively and fixedly connected with a supporting frame, a first motor and a second motor, the inner wall of the supporting frame is rotatably connected with a connecting column, and the surface of the connecting column is respectively and fixedly connected with a first straight gear and a ratchet wheel. This hoist self-adaptation emergency braking device, when first motor anticlockwise rotates, the below links up the electro-magnet circular telegram in the incasement and adsorbs the iron plate on the sliding block of below, thereby make the below pawl break away from the ratchet, ratchet anticlockwise rotates can promote the shrink of top pawl, under ordering about of extension spring, when the tooth's socket on ratchet surface moves to top pawl position, can drive the pawl and insert the tooth's socket, if when first motor became invalid, the pawl card of usable top was in the tooth's socket of ratchet, thereby the ratchet reversal has been avoided, and then can lock the wind-up roll in the twinkling of an eye, avoided the object can drop and produce inertia and cause the problem of damage to the jib loading boom.

Description

Self-adaptive emergency braking device of crane

Technical Field

The utility model relates to the technical field of crane braking, in particular to a self-adaptive emergency braking device for a crane.

Background

The crane refers to a multi-action hoisting machine for vertically lifting and horizontally carrying heavy objects in a certain range. Also known as crown blocks, navigation cranes and cranes.

The emergency braking device of the common crane cannot be instantly braked and locked, and when the crane lifts an object, if the motor fails, the motor cannot be instantly locked, so that the crane boom is damaged due to the falling inertia of the object, and therefore the emergency braking device of the crane is provided, and the problem provided in the method is solved.

Disclosure of Invention

The utility model aims to provide a self-adaptive emergency braking device of a crane, which aims to solve the problems in the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme: a self-adaptive emergency braking device of a crane comprises an installation box, wherein the inner wall of the installation box is respectively and fixedly connected with a supporting frame, a first motor and a second motor, the inner wall of the supporting frame is rotationally connected with a connecting column, the surface of the connecting column is respectively and fixedly connected with a first straight gear and a ratchet wheel, the output end of the first motor is fixedly connected with a second straight gear, the number of the supporting frames is two, the front surfaces of the two supporting frames are respectively and fixedly connected with a linking box, the surface of the linking box is provided with a sliding groove, the inner wall of the sliding groove is in sliding connection with a sliding block, one end of the sliding block is fixedly connected with a pawl, the other end of the sliding block is fixedly connected with an iron block, the inner wall of the sliding groove is fixedly connected with an electromagnet, the surface of the sliding block is sleeved with a tension spring, the left end of the connecting column extends to the left side surface of the supporting frame and is fixedly connected with a brake disc, and the right end of the connecting column extends to the outside of the installation box, and a wind-up roll is fixedly connected with the mounting box, and a locking mechanism is arranged in the mounting box.

Preferably, locking mechanism includes first mounting panel and the second mounting panel with the inside sliding connection of install bin, and the opposite face of first mounting panel and second mounting panel is the first spur rack of fixedly connected with and second spur rack respectively, and the equal fixedly connected with of opposite face of first mounting panel and second mounting panel piece of stopping, the output fixedly connected with third spur gear of second motor.

Preferably, the first straight rack and the second straight rack are in meshing transmission with the third straight gear.

Preferably, the first spur gear is in meshing transmission with the second spur gear.

Preferably, one end of the tension spring is fixedly connected with the inner wall of the sliding groove, and the other end of the tension spring is fixedly connected with the surface of the iron block.

Preferably, the first motor, the second motor and the electromagnet are all electrically connected with an external control system.

Advantageous effects

The utility model provides a self-adaptive emergency braking device of a crane, which has the following beneficial effects:

1. this hoist self-adaptation emergency braking device, through setting up ratchet and pawl, when first motor anticlockwise rotation, the below links up the electro-magnet circular telegram in the incasement and adsorbs the iron plate on the sliding block of below to make the below pawl break away from the ratchet, ratchet anticlockwise rotation can promote the shrink of top pawl, under the driving about of extension spring, when the tooth's socket on ratchet surface moved to top pawl position, can drive the pawl and insert the tooth's socket, if when first motor became invalid, the pawl card of usable top was in the tooth's socket of ratchet, thereby the ratchet reversal has been avoided, and then can lock the wind-up roll in the twinkling of an eye, avoided the object can drop and produce the problem that inertia caused the damage to the jib loading boom.

2. This hoist self-adaptation emergency braking device, through setting up first mounting panel and second mounting panel, when first motor became invalid, the second motor was clockwise forwarded and is driven third spur gear and first spur rack and the meshing transmission of second spur rack, thereby can drive two pieces of stopping and be close to and contact to the dish of stopping, and then will stop the dish and lock, when the heavy object that lifts by crane when first motor became invalid is put down if needs, drive second motor anticlockwise rotation, make two pieces of stopping reduce frictional force with the separation of the dish of stopping a little, thereby utilize the dish of stopping and the frictional force that the piece contact produced of stopping to make the heavy object of lifting slowly put down.

Drawings

FIG. 1 is a schematic front sectional view of the present invention;

FIG. 2 is a side view of the ratchet of the present invention;

fig. 3 is an enlarged schematic view of a portion a in fig. 1.

In the figure: the device comprises an installation box 1, a support frame 2, a support frame 3, a first motor 4, a second motor 5, a connecting column 6, a first straight gear 7, a ratchet wheel 8, a second straight gear 9, a connecting box 10, a sliding block 11, a pawl 12, an iron block 13, an electromagnet 14, a tension spring 15, a brake disc 16, a wind-up roll 17, a first installation plate 18, a second installation plate 19, a first straight rack 20, a second straight rack 21, a brake disc 22 and a third straight gear 23.

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. 1-3, the present invention provides a technical solution: a self-adaptive emergency braking device of a crane comprises an installation box 1, wherein the inner wall of the installation box 1 is respectively and fixedly connected with a supporting frame 2, a supporting frame 3, a first motor 4 and a second motor 5, the inner wall of the supporting frame 2 is rotatably connected with a connecting column 6, the surface of the connecting column 6 is respectively and fixedly connected with a first straight gear 7 and a ratchet 8, the output end of the first motor 4 is fixedly connected with a second straight gear 9, the first straight gear 7 is in meshing transmission with the second straight gear 9, the number of the supporting frames 3 is two, the front surfaces of the two supporting frames 3 are respectively and fixedly connected with a connecting box 10, the surface of the connecting box 10 is provided with a sliding groove, the inner wall of the sliding groove is in sliding connection with a sliding block 11, one end of the sliding block 11 is fixedly connected with a pawl 12, the other end of the sliding block 11 is fixedly connected with an iron block 13, the inner wall of the sliding groove is fixedly connected with an electromagnet 14, and the first motor 4, the second motor 5 and the electromagnet 14 are electrically connected with an external control system, the surface cover of sliding block 11 is equipped with extension spring 15, and the one end of extension spring 15 and the inner wall fixed connection of sliding tray, the other end of extension spring 15 and the fixed surface of iron plate 13 are connected, and the left end of spliced pole 6 extends to the left surface of carriage 2 to fixedly connected with disc 16 of stopping, and the right-hand member of spliced pole 6 extends to the outside of install bin 1, and fixedly connected with wind-up roll 17.

Through setting up ratchet 8 and pawl 12, when first motor 4 anticlockwise rotation, 14 circular telegrams of electro-magnet in the below linking case 10 adsorb the iron plate 13 on the sliding block 11 in the below, thereby make below pawl 12 break away from ratchet 8, ratchet 8 anticlockwise rotation can promote the shrink of top pawl 12, under the driving about of extension spring 15, when the tooth's socket on ratchet 8 surface moves to upper pawl 12 position, can drive pawl 12 and insert the tooth's socket, if when first motor 4 became invalid, the pawl 12 card of usable top was in the tooth's socket of ratchet 8, thereby ratchet 8 reversal has been avoided, and then can lock wind-up roll 17 in the twinkling of an eye, avoided the object can drop and produce inertia and cause the problem of damage to the jib loading boom.

The inside of installing box 1 is provided with locking mechanism, locking mechanism includes first mounting panel 18 and the second mounting panel 19 with the inside sliding connection of installing box 1, the opposite face of first mounting panel 18 and second mounting panel 19 is the first spur rack 20 of fixedly connected with and the second spur rack 21 respectively, the equal fixedly connected with of opposite face of first mounting panel 18 and second mounting panel 19 piece 22 of stopping, the output fixedly connected with third straight-teeth gear 23 of second motor 5, first spur rack 20 and second straight-teeth rack 21 all mesh the transmission with third straight-teeth gear 23.

Through setting up first mounting panel 18 and second mounting panel 19, when first motor 4 became invalid, second motor 5 forwarded clockwise and drives third spur gear 23 and first rack 20 and the meshing transmission of second rack 21, thereby can drive two pieces 22 of stopping and be close to and contact to the dish 16 of stopping, and then will stop 16 locks, if need put down the heavy object that the hoist was hoisted when first motor 4 became invalid, drive second motor 5 anticlockwise rotation, make two pieces 22 of stopping separate friction with dish 16 of stopping a little, thereby utilize the friction that dish 16 and the contact of piece 22 of stopping produced to make the heavy object of hoisting slowly put down.

The working principle is as follows: when the first motor 4 rotates to drive the second straight gear 9 to rotate anticlockwise, the electromagnet 14 in the lower connecting box 10 is electrified to adsorb the iron block 13 on the lower sliding block 11, so that the lower pawl 12 is separated from the ratchet wheel 8, the ratchet wheel 8 on the surface of the connecting column 6, the winding roller 17 and the brake disc 16 can be driven to rotate anticlockwise, the winding roller 17 is used for drawing the steel rope to drive the crane to hoist the object, when the ratchet wheel 8 rotates anticlockwise, the upper pawl 12 can be pushed to contract, under the driving of the tension spring 15, when the tooth socket on the surface of the ratchet wheel 8 moves to the position of the upper pawl 12, the pawl 12 can be driven to be inserted into the tooth socket, if the first motor 4 fails, the upper pawl 12 can be clamped in the tooth socket of the ratchet wheel 8, so that the ratchet wheel 8 is prevented from rotating reversely, the winding roller 17 can be locked instantly, and when the ratchet wheel 8 rotates clockwise, the upper pawl 12 is separated from the tooth socket of the ratchet wheel 8, the pawl 12 below is inserted into the tooth groove of the ratchet wheel 8, when the first motor 4 fails, the reverse locking can be realized, when the first motor 4 fails, the second motor 5 clockwise transfers and drives the third straight gear 23 to be meshed with the first straight rack 20 and the second straight rack 21 for transmission, so that the two brake pieces 22 can be driven to approach and contact the brake disc 16, the brake disc 16 is locked, if a heavy object hoisted by the crane needs to be put down when the first motor 4 fails, the second motor 5 is driven to rotate anticlockwise, the two brake pieces 22 are slightly separated from the brake disc 16 to reduce the friction force, and the hoisted heavy object is slowly put down by using the friction force generated by the contact between the brake disc 16 and the brake pieces 22.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A hoist self-adaptation emergency braking device, includes install bin (1), its characterized in that: the inner wall of the installation box (1) is fixedly connected with a supporting frame (2), supporting frames (3), a first motor (4) and a second motor (5) respectively, the inner wall of the supporting frame (2) is rotatably connected with connecting columns (6), the surfaces of the connecting columns (6) are fixedly connected with a first straight gear (7) and a ratchet wheel (8) respectively, the output end of the first motor (4) is fixedly connected with a second straight gear (9), the number of the supporting frames (3) is two, the fronts of the two supporting frames (3) are fixedly connected with linking boxes (10), the surfaces of the linking boxes (10) are provided with sliding grooves, the inner walls of the sliding grooves are slidably connected with sliding blocks (11), one ends of the sliding blocks (11) are fixedly connected with pawls (12), the other ends of the sliding blocks (11) are fixedly connected with iron blocks (13), the inner walls of the sliding grooves are fixedly connected with electromagnets (14), and surface tension springs (15) of the sliding blocks (11) are sleeved on the surfaces, the left end of spliced pole (6) extends to the left surface of carriage (2) to fixedly connected with disc (16) of stopping, the right-hand member of spliced pole (6) extends to the outside of install bin (1), and fixedly connected with wind-up roll (17), and the inside of install bin (1) is provided with locking mechanism.

2. The adaptive emergency brake device of a crane according to claim 1, wherein: locking mechanism includes first mounting panel (18) and second mounting panel (19) with the inside sliding connection of install bin (1), and the opposite face of first mounting panel (18) and second mounting panel (19) is fixedly connected with first spur rack (20) and second spur rack (21) respectively, and the equal fixedly connected with of opposite face of first mounting panel (18) and second mounting panel (19) stops piece (22), and the output fixedly connected with third spur gear (23) of second motor (5).

3. The adaptive emergency brake device of claim 2, wherein: the first straight rack (20) and the second straight rack (21) are in meshing transmission with the third straight gear (23).

4. The adaptive emergency brake device of a crane according to claim 1, wherein: the first straight gear (7) is in meshed transmission with the second straight gear (9).

5. The adaptive emergency brake device of a crane according to claim 1, wherein: one end of the tension spring (15) is fixedly connected with the inner wall of the sliding groove, and the other end of the tension spring (15) is fixedly connected with the surface of the iron block (13).

6. The adaptive emergency brake device of a crane according to claim 1, wherein: the first motor (4), the second motor (5) and the electromagnet (14) are electrically connected with an external control system.