CN217996564U

CN217996564U - Limiting mechanism of crane

Info

Publication number: CN217996564U
Application number: CN202221659480.9U
Authority: CN
Inventors: 夏正东
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-12-09
Anticipated expiration: 2032-06-30

Abstract

The utility model relates to a hoist technical field discloses a stop gear of hoist, including base and jack panel, the base upper surface is provided with the crane boom, the equal perpendicular fixed mounting in crane boom inner wall both sides has the guide bar, crane boom upper surface both sides fixed mounting has the hoist engine of two sets of symmetry distribution in opposite directions, and is two sets of the equal fixed mounting of output of hoist engine has the rolling wheel. The utility model discloses a set up length and be less than the anti-weight cable of crane boom height, can be at the hoist cable fracture, when the jack-up board lasts and falls downwards, it carries on spacingly to hold the jack-up board, the heavy object of avoiding the jack-up board bottom to lift directly pounces to the base, be favorable to improving the security of this hoist, and through the buffer spring in the guide bar outside, also can be when the jack-up board falls downwards, play the effect of buffering power consumption, the impact force when effectual reduction jack-up board falls downwards, the security of this hoist has further been improved, and is suitable for extensive popularization and use.

Description

Limiting mechanism of crane

Technical Field

The utility model belongs to the technical field of the hoist, specifically speaking relates to a stop gear of hoist.

Background

A crane, also called a crane, is a multi-action crane that vertically lifts and horizontally carries heavy objects within a certain range. The working characteristics of the hoisting equipment are that the hoisting equipment does intermittent motion, namely corresponding mechanisms for taking materials, transporting, unloading and the like in one working cycle work alternately, and the development and the use of the crane on the market are more and more extensive.

However, the existing crane still has some defects in the using process, such as: the existing crane does not have a good limiting mechanism, the heavy object is directly hoisted through a sling and a lifting hook, shaking and poor stability easily occur in the hoisting process, and the existing crane does not have a good anti-falling effect when the sling breaks, so that safety accidents are easily caused, and potential safety hazards exist.

In view of this, the present invention is provided.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model adopts the following basic concept:

a limiting mechanism of a crane comprises a base and a lifting plate, wherein a lifting frame is arranged on the upper surface of the base, guide rods are vertically and fixedly arranged on two sides of the inner wall of the lifting frame, two groups of winches symmetrically distributed in opposite directions are fixedly arranged on two sides of the upper surface of the lifting frame, winding wheels are fixedly arranged at output ends of the two groups of winches, slings are fixedly wound on the two groups of winding wheels, and the bottoms of the two groups of slings are respectively and fixedly connected with two sides of the upper surface of the lifting plate;

the equal fixed mounting in hoisting plate both ends has the uide bushing, and is two sets of the uide bushing slides respectively to cup joint two sets of on the guide bar, hoisting plate upper surface middle part fixedly connected with prevents weighing down the cable, prevent weighing down the other end and the interior top fixed connection of crane boom of cable, prevent weighing down the length of cable and be less than the height of crane boom.

As a preferred embodiment of the present invention, the hoisting frame is an inverted U-shape, and both sides of the bottom of the hoisting frame are fixedly connected to both sides of the upper surface of the base respectively.

As an optimal implementation mode of the utility model, it is two sets of the equal fixed mounting in guide bar top has the limiting plate, the diameter of limiting plate is greater than the external diameter of uide bushing.

As a preferred embodiment of the present invention, the guide sleeve is a hollow ring, and the inner diameter of the guide sleeve is adapted to the outer diameter of the guide rod.

As an optimal implementation mode of the utility model, the equal fixed mounting in bottom both sides has buffer spring in the crane boom, and two sets of buffer spring cup joint respectively two sets of the guide bar outside.

As a preferred embodiment of the utility model, there is the lifting hook, two sets of equal slidable mounting in hoisting plate lower surface both sides the lifting hook all is the J type, and two sets of the lifting hook distributes in opposite directions.

Compared with the prior art, the utility model following beneficial effect has:

the utility model discloses a hoisting plate, the cooperation of uide bushing and guide bar is used, the hoist engine drives the wind-up pulley clockwise rotation and carries out the rolling to the hoist cable, when pulling hoisting plate upward movement, the uide bushing at hoisting plate both ends moves upwards along the guide bar, guarantee the stability of hoisting plate at upwards pulling in-process, the heavy object of avoiding hanging to rise rocks, and through the limiting plate at guide bar top, can be when hoisting plate upward movement, advance the limiting plate to the hoisting plate, avoid the hoisting plate to last upward movement, the condition that the emergence touched the top.

The utility model discloses a set up length and be less than the anti-weight cable of crane boom height, can be at the hoist cable fracture, when the jack-up board lasts and falls downwards, hold the jack-up board and carry on spacingly, the heavy object of avoiding the jack-up board bottom to lift directly pounces to the base, be favorable to improving the security of this hoist, and through the buffer spring in the guide bar outside, also can play the effect of buffering power consumption when the jack-up board falls downwards, the impact force when effectual reduction jack-up board falls downwards, the security of this hoist has further been improved.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

In the drawings:

FIG. 1 is a schematic view of the main structure of the present invention;

FIG. 2 is a schematic view of the internal cross-sectional structure of the present invention;

fig. 3 is a schematic view of the structure of the guide rod of the present invention.

In the figure: 1-a base; 2-hoisting frame; 3-a hoisting plate; 4-a winch; 5-a winding wheel; 6-a sling; 7-anti-falling cable; 8-a hook; 9-a guide sleeve; 10-a guide bar; 11-a buffer spring; 12-limiting plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention.

As shown in fig. 1 to 3, a limiting mechanism of a crane comprises a base 1 and a lifting plate 3, wherein a hoisting frame 2 is arranged on the upper surface of the base 1, the hoisting frame 2 is in an inverted U shape, two sides of the bottom of the hoisting frame 2 are respectively fixedly connected with two sides of the upper surface of the base 1, two sides of the inner wall of the hoisting frame 2 are respectively and vertically and fixedly provided with a guide rod 10, the guide rods 10 play a role in guiding, two sets of symmetrically and oppositely distributed winches 4 are fixedly arranged on two sides of the upper surface of the hoisting frame 2, winding wheels 5 are respectively and fixedly arranged at output ends of the two sets of winches 4, the winches 4 drive the winding wheels 5 to rotate clockwise or counterclockwise, slings 6 are respectively and fixedly wound on the two sets of winding wheels 5, the bottoms of the two sets of slings 6 are respectively and fixedly connected with two sides of the upper surface of the lifting plate 3, and in the process of clockwise or counterclockwise rotation of the winding wheels 5, drive hoisting plate 3 through hoist cable 6 and reciprocate, the equal fixed mounting in 3 both ends of hoisting plate has uide bushing 9, two sets of uide bushings 9 slide respectively and cup joint on two sets of guide bars 10, when hoisting plate 3 reciprocates, slide from top to bottom along guide bar 10 through uide bushing 9, high stability, prevent rocking, hoisting plate 3 upper surface middle part fixedly connected with prevents weighing down cable 7, prevent weighing down cable 7's the other end and 2 interior top fixed connection of crane boom, prevent weighing down cable 7's length and be less than crane boom 2's height, prevent weighing down cable 7 can be when hoisting plate 3 falls downwards, hold hoisting plate 3, the heavy object of avoiding direct hoisting plate 3 to hang down the lift directly pounces to base 1, the equal slidable mounting in hoisting hook 8 in 3 lower surface both sides of hoisting plate, two sets of hoisting hooks 8 all are the J type, and two sets of hoisting hooks 8 distribute in opposite directions.

As shown in fig. 1 to 3, in the present configuration, further, buffer springs 11 are fixedly mounted on both sides of the bottom in the hoisting frame 2, two sets of buffer springs 11 are respectively sleeved on the outer sides of the two sets of guide rods 10, and the buffer springs 11 can buffer energy consumption when the hoisting plate 3 falls downward, so as to reduce impact force when the hoisting plate 3 falls downward.

As shown in fig. 1 to 3, in this setting, further, two sets of guide rods 10 are fixedly mounted with a limiting plate 12 at the top, the diameter of the limiting plate 12 is greater than the outer diameter of the guide sleeve 9, and the limiting plate 12 can limit the height of the guide sleeve 9 sliding upwards to avoid touching.

As shown in fig. 1 to 3, in the present arrangement, the guide sleeve 9 is in a hollow circular ring shape, and the inner diameter of the guide sleeve 9 is matched with the outer diameter of the guide rod 10, so that the guide sleeve 9 can slide along the guide rod 10 conveniently.

The implementation principle of the limiting mechanism of the crane of the embodiment is as follows: the lifting hook 8 on the lower surface of the hoisting plate 3 is hung on an object needing to be hoisted, the winch 4 is started again, the winch 4 drives the winding wheel 5 to rotate clockwise to wind the sling 6, the sling 6 pulls the hoisting plate 3 upwards to hoist the hoisted object in the winding process, the hoisting plate 3 upwards moves, the guide sleeve 9 upwards slides along the guide rod 10 to ensure the stability of the hoisting plate 3 in the upwards pulling process, the hoisted heavy object is prevented from shaking, the limiting plate 12 can limit the upwards sliding height of the guide sleeve 9 and avoid touching the top, when the sling is broken and broken 6 and cracked, the hoisting plate 3 downwards falls, the anti-falling cable 7 with the length smaller than the height of the hoisting frame 2 can pull the hoisting plate 3, the object hoisted at the bottom of the hoisting plate 3 is prevented from directly hitting the base 1, when the hoisting plate 3 downwards falls to a certain position, the guide sleeve 9 is in contact with the buffer spring 11 to compress the buffer spring 11, the buffer spring 11 plays a role in buffering energy consumption-dissipating effect in the compression process, the downward falling of the hoisting plate 3 is reduced, and the impact force is practical.

Claims

1. A limiting mechanism of a crane comprises a base (1) and a lifting plate (3), and is characterized in that a hoisting frame (2) is arranged on the upper surface of the base (1), guide rods (10) are vertically and fixedly arranged on two sides of the inner wall of the hoisting frame (2), two groups of symmetrically and oppositely distributed winches (4) are fixedly arranged on two sides of the upper surface of the hoisting frame (2), winding wheels (5) are fixedly arranged at output ends of the two groups of winches (4), slings (6) are fixedly wound on the two groups of winding wheels (5), and bottoms of the two groups of slings (6) are respectively and fixedly connected with two sides of the upper surface of the lifting plate (3);

the equal fixed mounting in lifter plate (3) both ends has uide bushing (9), and is two sets of uide bushing (9) slides respectively to cup joint two sets of on guide bar (10), lifter plate (3) upper surface middle part fixedly connected with prevents weighing down cable (7), prevent weighing down the other end of cable (7) and crane boom (2) interior top fixed connection, the length of preventing weighing down cable (7) is less than the height of crane boom (2).

2. The limiting mechanism of a crane according to claim 1, wherein the hoisting frame (2) is of an inverted U shape, and two sides of the bottom of the hoisting frame (2) are respectively fixedly connected with two sides of the upper surface of the base (1).

3. The limiting mechanism of a crane according to claim 1, wherein limiting plates (12) are fixedly mounted at the tops of the two groups of guide rods (10), and the diameters of the limiting plates (12) are larger than the outer diameter of the guide sleeve (9).

4. The limiting mechanism of a crane according to claim 1, wherein the guide sleeve (9) is in a hollow circular ring shape, and the inner diameter of the guide sleeve (9) is matched with the outer diameter of the guide rod (10).

5. The limiting mechanism of a crane according to claim 1, wherein two buffering springs (11) are fixedly mounted on two sides of the bottom in the hoisting frame (2), and two groups of buffering springs (11) are respectively sleeved on the outer sides of two groups of guide rods (10).

6. The limiting mechanism of claim 1, wherein hooks (8) are slidably mounted on two sides of the lower surface of the hoisting plate (3), two groups of hooks (8) are J-shaped, and the two groups of hooks (8) are distributed oppositely.