CN204549893U - A kind of tackling system of auxiliary hoist jib hinged-support bearing replacing - Google Patents

Abstract

The utility model provides a kind of tackling system of auxiliary hoist jib hinged-support bearing replacing, comprises rigid support, hanger, steel rope, cucurbit; Rigid support is arranged on rear side of hinged-support, for jib provides the constrained force of horizontal direction; First hanger is arranged on jib; On the rotating disk of the second hanger on front side of hinged-support; 3rd hanger is arranged on rotary column; Utilize the first steel rope to be connected with the first hanger, the second hanger, and steel rope between the first hanger and the second hanger arranges the first cucurbit, for jib provides the constrained force under being tilted to; Utilize the second steel rope to be connected with the first hanger, the 3rd hanger, and steel rope between the first hanger and the 3rd hanger arranges the second cucurbit, for jib provides the constrained force tilted upward.Adopt the utility model, can avoid using large-tonnage hanging device to lift crane arm support system, save money, save time, laborsaving.

Description

A lifting system for assisting the replacement of the bearing of the hinge support of the jib frame of the crane

technical field

The utility model relates to a lifting system for assisting the replacement of the bearing of the hinge support of the arm frame of a crane.

Background technique

At this stage, if there is a problem with the hinge support bearing of the crane jib system and needs to be repaired or replaced, the conventional practice is to disassemble and hang the jib system, then repair and replace the bearing, and then hoist the jib system to the crane. This method requires dismantling the entire boom system and placing it on the ground and re-hoisting it back to the crane. Therefore, hoisting equipment with a large tonnage or a large lifting height is required, which occupies a large site, has a long construction period, and poses a greater safety risk. , this conventional method is expensive, time-consuming and laborious.

Utility model content

The technical problem to be solved by the utility model is to provide a lifting system that assists in the replacement of the bearings of the hinge support of the crane jib, which can avoid the use of large-tonnage hoisting equipment to hoist the crane jib system, saving money, time and effort.

In order to solve the above-mentioned technical problems, the utility model provides a lifting system for assisting the replacement of the bearing of the hinge support of the jib frame of the crane, which is characterized in that it includes a rigid support, a first lifting lug, a second lifting lug, a third lifting lug, a first wire rope, a second wire rope, and a first hoist and a second hoist for the bungee wire;

The rigid support is installed on the rear side of the hinge support, and is used to withstand the rigid support at the end of the boom, and provide a horizontal binding force for the boom to form a first restraint part;

The first lifting lug is installed on the jib; the second lifting lug is on the turntable on the front side of the hinge support; the third lifting lug is installed on the rotating column;

The first steel wire rope is connected to the first lifting lug and the second lifting lug, and the first hoist is set on the steel wire rope between the first lifting lug and the second lifting lug to provide the jib with an inclined downward Binding force, forming a second binding part;

The second steel wire rope is connected to the first lifting lug and the third lifting lug, and the second hoist is set on the steel wire rope between the first lifting lug and the third lifting lug, so as to provide restraint for the jib to tilt upward Force, forming the third restraint part.

As a preferred specific implementation of the above technical solution, the first lifting lug, the second lifting lug, and the third lifting lug are all arranged in pairs with respect to the left and right sides of the jib.

As a preferred specific implementation of the above technical solution, the first lifting lug, the second lifting lug and the third lifting lug located on the same side of the boom are in the same vertical plane.

As a preferred specific implementation of the above technical solution, the contact surface between the rigid support and the end of the boom is a vertical plane.

As a preferred specific implementation of the above technical solution, both the first steel wire rope and the second steel wire rope are detachably connected to each lifting lug through a shackle.

As a preferred specific implementation of the above technical solution, the first hoist and the second hoist are manual hoists or electric hoists.

A lifting system implementing the utility model to assist the replacement of the bearing of the jib hinge support of the crane, compared with the prior art, has the following beneficial effects: without dismantling the jib system, the crane turntable is temporarily installed with a rigid The support is used as a track for the jib to move up and down, and with some fastening and restraining tools (such as lifting lugs, wire ropes, shackles), use a hoist to pull the jib out of the hinge support, so as to repair or replace the exposed hinge support bearings . Through the above-mentioned lifting system, the lifting and lowering work of the crane jib system can be avoided, equipment hoisting costs and labor input can be saved, the maintenance cycle can be shortened, and the safety of the operation can be improved; moreover, the maintenance and transformation funds can be reduced by 50% to 70%. , has good economic benefits.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings of the embodiments will be briefly introduced below.

Fig. 1 is a front view of an embodiment of a lifting system for assisting the replacement of the bearing of the jib hinge support of the utility model;

Fig. 2 is the side view of Fig. 1 embodiment;

Fig. 3 is the front view when the boom breaks away from the hinge support in the embodiment of Fig. 1;

Fig. 4 is a side view of the boom detached from the hinge support in the embodiment of Fig. 1 .

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

As shown in Fig. 1 and Fig. 2, a lifting system of the utility model for assisting the replacement of the bearing of the boom hinge support of the crane jib includes a rigid support 5, a first lifting lug 61, a second lifting lug 62, a third lifting lug Ears 63 first wire rope 71 , second wire rope 72 , and first hoist 91 and second hoist 92 for the bungee wire.

The rigid support 5 is installed on the rear side of the hinge support 1 to provide horizontal restraint force for the boom 2 and form a first restraint portion. Specifically, the rigid support 5 can be fixedly installed on the rotating column at the rear side of the hinge support 1, and can also be fixed on the turntable between the hinge support 1 and the rotating column, and the contact surface between it and the end of the arm frame 2 is A vertical plane, which can be used as a track for the boom 2 to move up and down.

The first lifting ear 61 is installed on the jib 2 ; the second lifting ear 62 is on the turntable 3 at the front side of the hinge support 1 ; the third lifting ear 63 is installed on the rotating column 4 . Specifically, the first lifting lug 61, the second lifting lug 62, and the third lifting lug 63 are arranged in pairs relative to the left and right sides of the boom 2; The force state and the load requirement of each lifting lug, the first lifting lug 61, the second lifting lug 62 and the third lifting lug 63 located on the same side of the boom 2 are in the same vertical plane, so that the boom 2 and each lifting lug are in a two-dimensional restraint state, so that the restraint force provided by the first hoist 91 and the second hoist 92 acts on the jib 2 more effectively, improving the stability and efficiency of the hoisting and spreader operation.

The first wire rope 71 is connected to the first lifting lug 61 and the second lifting lug 62, and the first hoist 91 is arranged on the wire rope between the first lifting lug 61 and the second lifting lug 62, which is an arm The frame 2 provides an oblique downward binding force to form a second binding portion; the second wire rope 72 is connected with the first lifting eye 61 and the third lifting eye 63, and is connected between the first lifting eye 61 and the third lifting eye. The second hoist 92 is arranged on the wire rope between 63 to provide an oblique upward restraint force for the jib 2 and form a third restraint portion. Wherein, in order to facilitate the installation and disassembly of the hoisting sling, the first wire rope 71 and the second wire rope 72 are detachably connected to each lifting lug through a shackle 8; the first hoist 91 and the second hoist 92 are manual hoists or electric hoist.

The installation steps of the lifting system for the replacement of the auxiliary crane arm hinge support 1 bearing of the utility model include the following steps:

Step 1, install a rigid support 5 on the rear side of the hinge support 1, and use the rigid support 5 to withstand the end of the boom 2 to prevent the boom 2 from moving backward;

Step 2, according to the lifting point structure shown in the figure, fixedly install each lifting lug that meets the load requirements;

Step 3, install hoisting slings (such as the first wire rope 71, the second wire rope 72, the first hoist 91, and the second hoist 92) on each lifting lug, then tighten the wire ropes, and disassemble the rotating shaft 10 of the jib 2;

Step 4: loosen the first gourd 91, tighten the second gourd 92, make the jib 2 separate from the hinge support 1 and move upward along the rigid support 5, expose the bearing 11 of the jib 2, and perform maintenance on the jib 2 bearing 11 or replace;

Step five, loosen the second gourd 92, tighten the first gourd 91, make the boom 2 move down along the rigid support 5 and return to the hinge support 1, and install the rotating shaft 10 to complete the maintenance of the boom 2 bearing 11 or replace.

It should also be noted that since the left and right sides of the hinge support 1 have a set of gourds (i.e. the first gourd 91 and the second gourd 92), lifting lugs (i.e. the first lifting lug 61, the second lifting lug 62 and the third Lifting lug 63), wire rope (namely the first wire rope 71 and the second wire rope 72) and the shackle 8 should be operated synchronously when operating the hoist, keeping the boom 2 against the rigid support 5 to move up and down stably .

It can be seen that a lifting system implementing the utility model to assist the replacement of the bearing of the jib hinge support of the crane can temporarily install a rigid support 5 on the crane turntable 3 as a means for the jib 2 to move up and down without dismantling the jib system. Rails, together with lifting lugs, wire ropes, shackles and other fastening and restraining tools, use a hoist to pull the arm frame 2 away from the hinge support 1, so as to repair or replace the exposed hinge support bearings. Through the above-mentioned lifting system, the lifting and lowering work of the crane jib system can be avoided, equipment hoisting costs and labor input can be saved, the maintenance cycle can be shortened, and the safety of the operation can be improved; moreover, the maintenance and transformation funds can be reduced by 50% to 70%. , has good economic benefits.

The above disclosures are only preferred embodiments of the present utility model, and of course the scope of rights of the present utility model cannot be limited with this. Therefore, equivalent changes made according to the patent scope of the utility model are still covered by the utility model. scope.

Claims (6)

1. A lifting system for assisting the replacement of the jib hinge support bearing of a crane, characterized in that it includes a rigid support, a first lifting lug, a second lifting lug, a third lifting lug, a first steel wire rope, a second steel wire rope, and First hoist and second hoist for elastic wire rope; The rigid support is installed on the rear side of the hinge support, and is used to withstand the rigid support at the end of the boom, and provide a horizontal binding force for the boom to form a first restraint part; The first lifting lug is installed on the jib; the second lifting lug is on the turntable on the front side of the hinge support; the third lifting lug is installed on the rotating column; The first steel wire rope is connected to the first lifting lug and the second lifting lug, and the first hoist is set on the steel wire rope between the first lifting lug and the second lifting lug to provide the jib with an inclined downward Binding force, forming a second binding part; The second steel wire rope is connected to the first lifting lug and the third lifting lug, and the second hoist is set on the steel wire rope between the first lifting lug and the third lifting lug, so as to provide restraint for the jib to tilt upward Force, forming the third restraint part. 2. A lifting system for assisting the replacement of the bearing of the jib hinge support of the crane jib as claimed in claim 1, wherein the first lifting lug, the second lifting lug, and the third lifting lug are all relative to the lifting lug. The left and right sides of the boom are set in pairs. 3. The lifting system for assisting the replacement of the bearing of the jib hinge support of the crane jib as claimed in claim 2, wherein the first lifting lug, the second lifting lug and the second lifting lug located on the same side of the jib are The three lugs are in the same vertical plane. 4. The lifting system for assisting the replacement of the bearing of the jib hinge support of the crane jib as claimed in claim 1, wherein the contact surface between the rigid support and the end of the jib is a vertical plane. 5 . The lifting system for assisting the replacement of the bearing of the jib hinge support of the crane jib as claimed in claim 1 , wherein the first steel wire rope and the second steel wire rope are detachably connected to each lifting lug through a shackle. 6 . 6 . The lifting system for assisting the replacement of the bearing of the jib hinge support of the crane jib as claimed in claim 1 , wherein the first hoist and the second hoist are manual hoists or electric hoists. 7 .