CN212425223U

CN212425223U - Rigid anti-swing telescopic arm of crane

Info

Publication number: CN212425223U
Application number: CN202020600926.5U
Authority: CN
Inventors: 曾宪渊
Original assignee: ORITCRANES (BEIJING) CO Ltd
Current assignee: ORITCRANES (BEIJING) CO Ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2021-01-29
Anticipated expiration: 2030-04-21

Abstract

The utility model provides a flexible arm is prevented shaking by hoist rigidity, a serial communication port, include: the telescopic arm support is arranged on the pipe wall of the first-section arm, a first collar part and a travel limit switch are arranged at the top of the first-section arm, and a second collar part is arranged at the bottom of the first-section arm; the top of the two-section arm is provided with a first pulley, and the pipe wall is provided with a second pulley; a third pulley is installed at the top of the three-section arm, a third collar part is arranged on the pipe wall, and a flange plate for installing a lifting appliance is welded at the bottom of the three-section arm; guide wheels are respectively arranged on the pipe walls of the first section of arm and the second section of arm. The utility model has the advantages as follows: through installing the leading wheel on the knuckle arm, compress tightly and the direction rigid anti-swing telescopic arm at flexible in-process, not only improved driving positioning accuracy, effectively avoided the material swing of driving operation in-process in addition, reduced operation flow cycle, improved the operating efficiency.

Description

Rigid anti-swing telescopic arm of crane

Technical Field

The utility model relates to a hoisting equipment technical field especially indicates a flexible arm is prevented shaking by hoist rigidity.

Background

The bridge crane has the advantages of simple structure, small occupied space, large operation space, high operation efficiency and the like, and is widely applied to the industrial and logistics fields of workshops, warehouses, docks and the like. With the improvement of the automation degree of industry and logistics, the requirements on the operation efficiency and safety are higher and higher.

At present traditional bridge crane adopts flexible wire rope to be equipped with hoist handling material mostly, and the handling in-process is along with opening and stop with the acceleration and deceleration, must lead to the material to appear the swing, especially in intelligent driving field, requires more and more high to dolly functioning speed, if can not eliminate the swing rapidly, then influences handling efficiency gently, then produces great incident heavily.

SUMMERY OF THE UTILITY MODEL

The utility model provides a flexible arm is prevented shaking by hoist rigidity for assist driving handling material, there is the problem of swaing among the prior art transport material process to have solved.

The technical scheme of the utility model is realized like this:

a crane rigid anti-sway telescopic boom, comprising: the telescopic arm support is arranged on the pipe wall of the first-section arm, a first collar part and a travel limit switch are arranged at the top of the first-section arm, and a second collar part is arranged at the bottom of the first-section arm; a first pulley is arranged at the top of the two-section arm, and a second pulley is arranged on the pipe wall of the two-section arm; a third pulley is mounted at the top of the three-section arm, a third collar part is arranged on the pipe wall of the three-section arm, and a flange plate for mounting a lifting appliance is welded at the bottom of the three-section arm; the pipe walls of the first section of arm and the second section of arm are respectively provided with a guide wheel, and four corners of the second section of arm and the third section of arm are respectively welded with milled angle steel.

Preferably, the telescopic arm support is connected with the support through a bolt group, the support is connected with the section of arm through a bolt group, and a rubber block is additionally arranged on the bolt group between the telescopic arm support and the support.

Preferably, the top welding of a section of arm has the beaded finish, be equipped with the screw hole on the beaded finish, first lantern ring part with beaded finish bolted connection, travel limit switch with beaded finish bolted connection.

Preferably, a reinforcing ring and a channel steel are welded around each guide wheel.

The working principle of the utility model is as follows:

when the crane is assembled, the first-section arm is supported by the telescopic arm and the support is fixed on the crane, the second-section arm is nested in the first-section arm, and the third-section arm is nested in the second-section arm. When the arm steel wire rope penetrates through the telescopic arm, the second pulley and the third pulley sequentially penetrate through the telescopic arm steel wire rope, and finally the two ends of the steel wire rope are fixed on the second sleeve ring part of one section of arm.

When the steel wire rope is too tight or too loose, the first sleeve ring part on the top of one section of arm can be used for micro adjustment. When the rigid anti-swing telescopic arm contracts, the steel wire rope of the hoisting mechanism lifts the three sections of arms, and the three sections of arms drive the two sections of arms to contract synchronously through the arm retracting steel wire rope. The guide wheel compresses tightly the track on the knuckle arm in the motion process, and the rocking is prevented.

If only one arm retracting rope is provided, when the rigid anti-shaking telescopic arm extends out, the rigid anti-shaking telescopic arm completely depends on the self gravity of the two sections of arms, the situation that the two sections of arms cannot extend out easily occurs, in order to ensure that the two sections of arms extend out smoothly, one arm extending rope is added, when the arm steel wire rope penetrates through the third pulley, the two ends of the steel wire rope are respectively fixed on the lantern ring parts of the two sections of arms, and at the moment, the extending of the rigid anti-shaking telescopic arm is changed into the sum of the gravity of the two sections of arms, the three sections of arms and the lifting material. Because the gravity of the material is larger, the two-section arm can be ensured to extend out smoothly.

When the rigid anti-shaking telescopic arm contracts, the stroke limit switch at the top of one section of arm can effectively prevent the contraction stroke from exceeding the limit stroke.

The utility model has the advantages that:

make three section collapsible formula structures with the flexible arm of rigidity anti-swing to through install the leading wheel on the knuckle arm, compress tightly and lead the flexible arm of rigidity anti-swing at flexible in-process, not only improved the space positioning accuracy of driving, effectively avoided the material swing of driving operation in-process in addition, reduced operation flow cycle, improved the operating efficiency.

The two-section arm and the three-section arm can be synchronously contracted by utilizing a pure mechanical structure, no additional hydraulic power element is needed, and the product development cost is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the overall assembly structure of the present invention;

FIG. 2 is a schematic diagram of the exploded structure of FIG. 1;

fig. 3 is the structure diagram of the synchronous telescoping principle of the rigid anti-swing telescopic arm of the crane.

In the figure:

1. support, 2, block rubber, 3, flexible arm support, 4, first lantern ring part, 5, a festival arm, 6, leading wheel, 7, second lantern ring part, 8, first pulley, 9, two festival arms, 10, second pulley, 11, third pulley, 12, three festival arms, 13, third lantern ring part, 14, travel limit switch.

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

According to the embodiment shown in fig. 1-2, the utility model discloses a crane rigidity anti-sway telescopic arm, its characterized in that includes: the telescopic arm type lifting device comprises a first-section arm 5, a second-section arm 9 and a third-section arm 12, wherein a telescopic arm support 3 is arranged on the pipe wall of the first-section arm 5, a first collar part 4 and a travel limit switch 14 are arranged at the top of the first-section arm 5, and a second collar part 7 is arranged at the bottom of the first-section arm 5; a first pulley 8 is arranged at the top of the two-section arm 9, and a second pulley 10 is arranged on the pipe wall of the two-section arm 9; a third pulley 11 is installed at the top of the three-section arm 12, a third collar part 13 is arranged on the pipe wall of the three-section arm 12, and a flange plate for installing a lifting appliance is welded at the bottom of the three-section arm 12; guide wheels 6 are respectively arranged on the pipe walls of the first-section arm 5 and the second-section arm 9, and milled angle steel is welded at four corners of the second-section arm 9 and the third-section arm 12.

The knuckle arms are all made of square tubes, and extra processing of materials is reduced. The loop members are used to fix the wire rope, and the pulleys are used to guide the wire rope.

The telescopic arm support 3 is connected with the support 1 through a bolt set, the support 1 is connected with a section of arm 5 through a bolt set, and the bolt set between the telescopic arm support 3 and the support 1 is provided with the rubber block 2.

The top welding of above-mentioned a section arm 5 has the beaded finish, is equipped with the screw hole on the beaded finish, first lantern ring part 4 and beaded finish bolted connection, travel limit switch 14 and beaded finish bolted connection.

And a reinforcing ring and channel steel are welded around each guide wheel 6.

The second collar part 7 is connected to the arm 5 by a stub shaft welded to the bottom of the arm 5.

The support 1, the rubber block 2 and the telescopic arm support 3 form a flexible supporting part, and due to the buffering effect of the rubber block 2, the impact effect of the telescopic arm on materials in the hoisting moment is reduced.

The second pulley 10 is installed on the pipe wall of the two-section arm 9 by additionally arranging a notch, and the welding material plate at the notch forms a certain angle with the pipe wall, so that the rope inlet angle of the steel wire rope can be ensured to be less than 3.5 degrees.

And milled angle steels are welded at four corners of the two-section arm 9 and the three-section arm 12 and are used as motion tracks of the guide wheel 6.

The two-section arm 9 is provided with the first pulley 8 by additionally arranging a solder plate on the top, the three-section arm 12 is provided with the third pulley 11 by additionally arranging a solder plate on the top, and the solder plate is required to be additionally provided with notches with different sizes to ensure that the steel wire rope can smoothly penetrate.

When the rigid anti-swing telescopic arm of the crane is assembled, the first-section arm 5 is fixed on the crane through the telescopic arm support 3 and the support 1, the second-section arm 9 is nested in the first-section arm 5, and the third-section arm 12 is nested in the second-section arm 9. When the arm steel wire rope is threaded, the arm steel wire rope sequentially passes through the second pulley 10 and the third pulley 11, and finally, two ends of the steel wire rope are fixed on the second collar part 7 of the arm 5.

When an over-tightened or over-loosened condition of the cable occurs, a fine adjustment can be made by the first collar part 4 on top of the arm 5. When the rigid anti-swing telescopic arm contracts, the steel wire rope of the hoisting mechanism lifts the three sections of arms 12, and the three sections of arms 12 drive the two sections of arms 9 to contract synchronously through the arm retracting steel wire rope. The guide wheel 6 compresses the track on the knuckle arm in the movement process to prevent shaking; when the pressure of the guide wheels 6 on the track is uneven, the two-section arm 9 and the three-section arm 12 are inclined slightly, and at the moment, the pressing degree of the guide wheels 6 in different directions on the track can be adjusted to ensure that each guide wheel 6 can contact the track.

If only one arm retracting rope is provided, when the rigid anti-swing telescopic arm extends out, the rigid anti-swing telescopic arm completely depends on the gravity of the two-section arm 9, the situation that the two-section arm 9 cannot extend out easily occurs, in order to ensure that the two-section arm 9 smoothly extends out, one arm extending rope is additionally arranged, when the arm steel wire rope penetrates through the third pulley 11, two ends of the steel wire rope are respectively fixed on the lantern ring parts of the one-section arm 5 and the two-section arm 9, and at the moment, the extension of the rigid anti-swing telescopic arm is changed into the sum of the gravity of the two-section arm 9, the three-section arm. Because the gravity of the material is larger, the two-section arm 9 can be ensured to extend out smoothly.

When the rigid anti-shaking telescopic arm contracts, the stroke limit switch 14 at the top of the section of arm 5 can effectively prevent the contraction stroke from exceeding the limit stroke.

As shown in fig. 3, a pulley block is adopted to enable a steel wire rope to sequentially pass through a first collar part 4 on a first-section arm 5, a second pulley 10 on the pipe wall of a second-section arm 9 and a third pulley 11 on the top of a third-section arm 12, so that synchronous extension and retraction are realized; and a group of pulley blocks sequentially penetrate through the first collar part 4 on the first-section arm 5, the first pulley 8 at the top of the second-section arm 9 and the third collar part 13 on the outer side of the pipe wall of the third-section arm 12. The pulley block can avoid the phenomenon of blocking and stopping of the telescopic arm in the telescopic process, realizes synchronous telescopic of the rigid anti-shaking telescopic arm, and prevents the two-section arm 9 and the three-section arm 12 from directly falling to the ground when a steel wire rope of a hoisting mechanism is broken.

The synchronous telescoping principle is as follows: taking any point on any one knuckle arm as a reference point, setting the expansion speed of the two knuckle arm 9 relative to the reference point as V2, the expansion speed of the three knuckle arm 12 relative to the reference point as V3, and the speed of the three knuckle arm 12 relative to the two knuckle arm 9 as V32. According to the structural characteristics of the pulley block in fig. 3, an algebraic relation V3 is 2V2, and a speed V32 of the three-joint arm 12 relative to the two-joint arm 9 is V2. The extension amount of the two-joint arm 9 per unit time with respect to the one-joint arm 5 is Δ S2, the extension amount of the three-joint arm 12 with respect to the two-joint arm 9 is Δ S32, and Δ S2 is equal to Δ S32, that is, synchronous extension and contraction is obtained according to V32 equal to V2.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A crane rigid anti-sway telescopic boom, comprising: the telescopic arm type lifting device comprises a first section of arm (5), a second section of arm (9) and a third section of arm (12), wherein a telescopic arm support (3) is arranged on the pipe wall of the first section of arm (5), a first collar part (4) and a travel limit switch (14) are arranged at the top of the first section of arm (5), and a second collar part (7) is arranged at the bottom of the first section of arm (5); a first pulley (8) is installed at the top of the two-section arm (9), and a second pulley (10) is installed on the pipe wall of the two-section arm (9); a third pulley (11) is mounted at the top of the three-section arm (12), a third collar part (13) is arranged on the pipe wall of the three-section arm (12), and a flange plate for mounting a lifting appliance is welded at the bottom of the three-section arm (12); the pipe wall of the first-section arm (5) and the pipe wall of the second-section arm (9) are respectively provided with a guide wheel (6), and four corners of the second-section arm (9) and the third-section arm (12) are respectively welded with angle steel which is milled flat.

2. The rigid anti-swing telescopic arm of a crane according to claim 1, wherein the telescopic arm support (3) is connected with the support (1) through a bolt set, the support (1) is connected with the arm (5) through a bolt set, and a rubber block (2) is additionally arranged on the bolt set between the telescopic arm support (3) and the support (1).

3. A rigid telescopic jib for cranes according to claim 1, characterized in that a reinforcing ring is welded to the top of the jib (5), said reinforcing ring is provided with screw holes, said first collar part (4) is bolted to said reinforcing ring, and said travel limit switch (14) is bolted to said reinforcing ring.

4. A rigid anti-sway telescopic arm of a crane according to claim 1, characterized in that a reinforcing ring and a channel steel are welded around each of said guide wheels (6).