CN212269288U

CN212269288U - Crane boom with telescopic self-locking function

Info

Publication number: CN212269288U
Application number: CN202020642179.1U
Authority: CN
Inventors: 张银冬; 郁鸣; 王志勇
Original assignee: Jiangsu Gretel Heavy Industry Technology Development Co ltd
Current assignee: Jiangsu Gretel Heavy Industry Technology Development Co ltd
Priority date: 2020-04-25
Filing date: 2020-04-25
Publication date: 2021-01-01
Anticipated expiration: 2030-04-25

Abstract

The utility model discloses a hoist davit with flexible self-locking function, include the outer arm and install the inner arm at outer arm top, the top of outer arm is located the top fixedly connected with frame of inner arm, the top fixedly connected with braking plate of inner arm, and the top equidistance fixedly connected with multiunit tooth piece of braking plate, the top symmetry that the inside of frame is located the braking plate rotates and is connected with two sets of L type framves, the hydro-cylinder is installed at the top of frame, and the bottom transmission of hydro-cylinder is connected with the telescopic link. The utility model discloses in, at first, inside is equipped with automatic locking structure, can be in the flexible back of adjusting of davit, carries out the automatic locking between outer arm and the inner boom and handles, has promoted the flexible convenience of adjusting back locking and handling of davit to the in-service operation of the hoist of being convenient for uses, and secondly, inside is equipped with over-and-under type counter weight structure, can be so that the more stable of locking between L type frame and the braking plate, has also promoted the flexible efficiency of adjusting back locking and handling of davit simultaneously.

Description

Crane boom with telescopic self-locking function

Technical Field

The utility model relates to a hoist subassembly technical field especially relates to a hoist davit with flexible self-locking function.

Background

The crane refers to a multi-action crane for vertically lifting and horizontally carrying heavy objects within a certain range. Also known as crown blocks, navigation cranes and cranes. After the hydraulic crane boom is adjusted in a telescopic mode nowadays, an operator is required to perform locking treatment after the boom is adjusted in a telescopic mode, automatic locking treatment after the crane boom is adjusted in a telescopic mode is difficult to achieve, convenience in locking treatment is poor, and the crane is inconvenient to use in actual operation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problem that after the traditional crane boom is telescopically adjusted, an operator needs to participate in locking treatment, and the locking treatment is relatively poor in convenience, the crane boom with the telescopic self-locking function is provided.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a hoist davit with flexible self-locking function, includes the outer arm and installs the inner arm at outer arm top, the top of outer arm is located the top fixedly connected with frame of inner arm, the top fixedly connected with braking plate of inner arm, and the top equidistance fixedly connected with multiunit tooth piece of braking plate, the top symmetry that the inside of frame is located the braking plate rotates and is connected with two sets of L type framves, the hydro-cylinder is installed at the top of frame, and the bottom transmission of hydro-cylinder is connected with the telescopic link, the lifter plate is installed to the telescopic link bottom, the both ends symmetry of lifter plate rotates and is connected with two sets of transmission connecting rods, and the free end of two sets of transmission connecting rods rotates with the vertical end of two sets of L.

As a further description of the above technical solution:

the bottom of the horizontal end of each L-shaped frame is fixedly connected with a locking block, and the locking blocks are meshed with the multiple groups of tooth blocks.

As a further description of the above technical solution:

the locking block and the multiple groups of tooth blocks are all in an isosceles trapezoid structure.

As a further description of the above technical solution:

the bottom of the left end of the oil cylinder is communicated with a first oil pipe, and the top of the left end of the oil cylinder is communicated with a second oil pipe.

As a further description of the above technical solution:

the lifting groove that is vertical distribution is seted up to the preceding terminal surface of frame, and the inboard sliding of lifting groove has the balancing weight, the top fixedly connected with lifting hook of balancing weight.

As a further description of the above technical solution:

the horizontal ends of the two groups of L-shaped frames are fixedly connected with lifting ropes, and the free ends of the lifting ropes are fixedly connected with the lifting hooks.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, inside is equipped with automatic locking structure, be equipped with the hydro-cylinder in the frame, two sets of L type framves and drive connecting rod, telescopic cylinder during operation on the davit, hydraulic oil also can enter into in the hydro-cylinder through second oil pipe, the telescopic link just can downwardly extending in the hydro-cylinder, under drive connecting rod's effect, two sets of L type framves just can be internal rotation to the same time, the locking piece on the L type frame just can break away from the tooth piece, after the flexible regulation of davit is handled, two sets of L type framves just can rotate outwards in step, the locking piece on the L type frame just can interlock the tooth piece on the braking plate, this kind of structure can be after the flexible regulation of davit, carry out the automatic locking between outer arm and the inner boom and handle, the convenience that the flexible back locking of adjusting of davit was handled has been promoted.

2. The utility model discloses in, inside over-and-under type counter weight structure that is equipped with, be equipped with lift groove and balancing weight in the frame, be connected with the lifting rope simultaneously between L type frame and balancing weight, during normal condition, the balancing weight just can produce decurrent pulling force in lift inslot portion, thereby stimulate two sets of L type frame and the mutual interlock of braking plate, after flexible regulation, the inside hydraulic oil of hydro-cylinder is under the action of gravity of balancing weight, just can move back oil rapidly, L type frame just can reset to the locking state rapidly, this kind of structure can make the locking more stable between L type frame and the braking plate, the efficiency of the flexible back locking processing of adjusting of davit has also been promoted simultaneously.

Drawings

Fig. 1 is a schematic diagram of a crane jib with a telescopic self-locking function according to the present invention;

fig. 2 is a schematic cross-sectional view of the present invention;

fig. 3 is a front view of the middle frame of the present invention.

Illustration of the drawings:

1. an outer arm; 2. an inner arm; 3. a frame; 301. a lifting groove; 4. a brake plate; 401. a tooth block; 5. an L-shaped frame; 501. a locking block; 6. an oil cylinder; 601. a telescopic rod; 602. a first oil pipe; 603. a second oil pipe; 7. a lifting rope; 8. a balancing weight; 801. a hook; 9. a lifting plate; 10. a drive link.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a hoist davit with flexible self-locking function, include outer arm 1 and install the inner arm 2 at outer arm 1 top, the top of outer arm 1 is located the top fixedly connected with frame 3 of inner arm 2, the top fixedly connected with braking plate 4 of inner arm 2, and the top equidistance fixedly connected with multiunit tooth piece 401 of braking plate 4, the inside top symmetry that is located braking plate 4 of frame 3 rotates and is connected with two sets of L type framves 5, hydro-cylinder 6 is installed at the top of frame 3, and the bottom transmission of hydro-cylinder 6 is connected with telescopic link 601, lifter plate 9 is installed to telescopic link 601 bottom, the both ends symmetry of lifter plate 9 rotates and is connected with two sets of transmission connecting rod 10, and the free end of two sets of transmission connecting rod 10 rotates with the vertical end of two sets of L type fra.

Specifically, as shown in fig. 1-3, the bottom of the horizontal end of each of the two sets of L-shaped frames 5 is fixedly connected with a locking block 501, the locking blocks 501 are engaged with the plurality of sets of tooth blocks 401, the locking blocks 501 and the plurality of sets of tooth blocks 401 are all in an isosceles trapezoid structure, the structure improves the stability of locking in the horizontal direction between the locking blocks 501 and the tooth blocks 401, the bottom of the left end of the oil cylinder 6 is communicated with a first oil pipe 602, the top of the left end of the oil cylinder 6 is communicated with a second oil pipe 603, the first oil pipe 602 is arranged to facilitate oil feeding and oil returning of the oil circuit of the lower half cavity of the oil cylinder 6, and the second oil pipe 603 is arranged to facilitate oil feeding and oil returning of the oil circuit of the upper half cavity of the oil cylinder 6.

Specifically, as shown in fig. 1 and 3, the lift groove 301 that is vertical distribution is seted up to the preceding terminal surface of frame 3, and the inboard slip of lift groove 301 has inlayed balancing weight 8, the top fixedly connected with lifting hook 801 of balancing weight 8, the equal fixedly connected with lifting rope 7 of the horizontal end of two sets of L type frame 5, and the free end and the lifting hook 801 fixed connection of lifting rope 7, the setting of lift groove 301, the stability of 8 elevating movement of balancing weight has been promoted, the setting of lifting hook 801, be convenient for L type frame 5 passes through the connection between lifting rope 7 and the balancing weight 8 and handles.

The working principle is as follows: when the lifting arm telescopic adjusting device is used, the second oil pipe 603 on the oil cylinder 6 is communicated with the oil inlet pipe of the telescopic cylinder on the lifting arm, the first oil pipe 602 on the oil cylinder 6 is communicated with the oil outlet pipe of the telescopic cylinder on the lifting arm, the oil cylinder 6 and the telescopic cylinder on the lifting arm can synchronously operate, when the telescopic cylinder on the lifting arm drives the inner arm 2 to telescopically adjust on the outer arm 1, hydraulic oil can enter the oil cylinder 6 through the second oil pipe 603, so that the telescopic rod 601 is driven to downwardly extend in the oil cylinder 6, the lifting plate 9 can descend, under the action of the two groups of transmission connecting rods 10, the two groups of L-shaped frames 5 can synchronously rotate inwards, the locking blocks 501 on the two groups of L-shaped frames 5 can be separated from the tooth blocks 401 on the braking plate 4, after the lifting arm is telescopically adjusted, the hydraulic oil in the oil cylinder 6 can be retreated through the first oil pipe 602, and simultaneously, under the action of the gravity of the balancing weight 8, the two groups of L-, the locking block 501 on the L-shaped frame 5 can be engaged with the tooth block 401 on the brake plate 4, and under the transmission action of the transmission connecting rod 10, the telescopic rod 601 can rapidly move upwards, so that the oil cylinder 6 is driven to rapidly withdraw oil, and the automatic locking treatment after the telescopic adjustment of the suspension arm is completed.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A crane boom with a telescopic self-locking function comprises an outer boom (1) and an inner boom (2) arranged at the top of the outer boom (1), it is characterized in that the top of the outer arm (1) is positioned above the inner arm (2) and is fixedly connected with a frame (3), the top of the inner arm (2) is fixedly connected with a brake plate (4), and the top of the brake plate (4) is fixedly connected with a plurality of groups of tooth blocks (401) at equal intervals, two groups of L-shaped frames (5) are symmetrically and rotatably connected with the inside of the frame (3) above the brake plate (4), the top of the frame (3) is provided with an oil cylinder (6), the bottom of the oil cylinder (6) is connected with a telescopic rod (601) in a transmission way, the bottom of the telescopic rod (601) is provided with a lifting plate (9), two ends of the lifting plate (9) are symmetrically and rotatably connected with two groups of transmission connecting rods (10), and the free ends of the two groups of transmission connecting rods (10) are respectively and rotatably connected with the vertical ends of the two groups of L-shaped frames (5).

2. The crane boom with the telescopic self-locking function as claimed in claim 1, wherein the bottoms of the horizontal ends of the two sets of L-shaped frames (5) are fixedly connected with locking blocks (501), and the locking blocks (501) are engaged with the plurality of sets of tooth blocks (401).

3. The crane boom with the telescopic self-locking function as claimed in claim 2, wherein the lock block (501) and the plurality of sets of tooth blocks (401) are in an isosceles trapezoid structure.

4. The crane boom with the telescopic self-locking function as claimed in claim 1, wherein the bottom of the left end of the oil cylinder (6) is communicated with a first oil pipe (602), and the top of the left end of the oil cylinder (6) is communicated with a second oil pipe (603).

5. The crane boom with the telescopic self-locking function as claimed in claim 1, wherein the front end face of the frame (3) is provided with a vertically distributed lifting groove (301), a counterweight (8) is slidably embedded in the inner side of the lifting groove (301), and the top of the counterweight (8) is fixedly connected with a lifting hook (801).

6. The crane boom with the telescopic self-locking function as claimed in claim 5, wherein the horizontal ends of the two sets of L-shaped frames (5) are fixedly connected with lifting ropes (7), and the free ends of the lifting ropes (7) are fixedly connected with lifting hooks (801).