CN213202163U

CN213202163U - Telescopic arm of crane

Info

Publication number: CN213202163U
Application number: CN202022247651.4U
Authority: CN
Inventors: 刘昌贵; 周扬
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-12
Filing date: 2020-10-12
Publication date: 2021-05-14
Anticipated expiration: 2030-10-12

Abstract

The utility model discloses a flexible arm of hoist, including hoist body, control room, flexible arm, control room fixed mounting on the heavy quick-witted body, and flexible arm is articulated to be set up on the hoist body, and flexible arm comprises the flexible arm of first section flexible arm, the flexible arm of second section, the flexible arm of third section and the flexible arm of fifth section, and the flexible arm of first section, the flexible arm of second section and the flexible arm bottom surface top of third section department fixed mounting respectively have the mounting panel, and the embedding of mounting panel lateral wall center department has the bearing. The utility model discloses a stay cord, control switch, ingenious combination between disc and the three rows of warning lights, through observing three rows of warning lights, operating personnel in the control room can clearly observe the flexible arm of second section, the flexible arm of third section and the flexible respective degree of curvature of arm of fifth section, can effectual prevention flexible arm exceed the limit degree of winding and lift by crane the object like this, in case the discovery flexible arm has exceeded the limit degree of winding and just give up immediately and continue to lift by crane the object, avoid taking place danger.

Description

Telescopic arm of crane

Technical Field

The utility model relates to a heavy machinery field, concretely relates to flexible arm of hoist.

Background

The degree of deflection, which is generally referred to as the load bearing member (multi-fingered beam), is known as the degree of deflection, which is a deflection when loaded and is also considered to be broken when the deflection reaches a certain limit. The crane telescopic boom can generate a certain winding degree in the process of hoisting a heavy object, and the crane telescopic boom can be excessively bent sometimes to break, so that not only is great property loss caused, but also great safety accidents are possibly caused, and therefore a crane telescopic boom winding degree (bending degree) detection device is urgently needed to prevent the condition of breakage of the telescopic boom.

SUMMERY OF THE UTILITY MODEL

In order to solve the existing problem, the utility model provides a flexible arm of hoist.

The utility model discloses a realize through following technical scheme:

a telescopic arm of a crane comprises a crane body, a control chamber and a telescopic arm, wherein the control chamber is fixedly arranged on the crane body, the telescopic arm is hinged to the crane body and comprises a first section of telescopic arm, a second section of telescopic arm, a third section of telescopic arm and a fifth section of telescopic arm, mounting plates are fixedly arranged at the top ends of the bottom surfaces of the first section of telescopic arm, the second section of telescopic arm and the third section of telescopic arm respectively, a bearing is embedded in the center of the side wall of each mounting plate, a mounting hole for the bearing to be embedded is formed in the center of the side wall of each mounting plate, a contact part of a bearing outer ring and the mounting plates is fixedly connected, a rotating shaft is fixedly sleeved in each bearing inner ring, the side end of the rotating shaft extends out of each bearing inner ring and is fixed with a disc, the axial lead of the disc and the axial lead of the rotating shaft are positioned on the same straight line, and arc-, the two ends of the arc-shaped extrusion block are both arranged in an inclined manner, the arc-shaped extrusion block is arranged at the edge of the side wall of the disc, a plurality of control switches are fixedly arranged on the opposite side walls of the mounting plate and the disc, the control switches are distributed at the side ends of the arc-shaped extrusion block in an arc manner, the top ends of the bottom surfaces of the second section of telescopic arm, the third section of telescopic arm and the fifth section of telescopic arm are respectively and fixedly provided with a fixed plate, the bottom end of each fixed plate is respectively and fixedly provided with a round box, a central shaft is transversely and fixedly arranged in the round box, the axial lead of the central shaft and the axial lead of the round box are positioned on the same straight line, a sleeve is sleeved on the central shaft, two guide cylinders are arranged in the sleeve, the two guide cylinders are symmetrically sleeved at the two ends of the central shaft and are in rotating connection with the central shaft, the outer side of the guide, the cover is equipped with the torsional spring on the center pin, inboard one end of torsional spring and center pin fixed connection, torsional spring outside one end and sleeve inner wall fixed connection, the winding has the stay cord on the torsional spring, stay cord one end and sleeve fixed connection, the stay cord other end pierces through round box and rather than the adjacent disc edge fixed connection of lower extreme department, set up the through wires hole that supplies the stay cord to pass on the round box lateral wall, control indoor fixed mounting and have first mounting panel, fixed mounting has three rows of warning lights on the first mounting panel, and every row of warning light comprises a plurality of emitting diode.

Preferably, the control switches on the side wall of each mounting plate are electrically connected with the light emitting diodes of the corresponding row of warning lamps from top to bottom through wires respectively from top to bottom.

Preferably, the control switch is electrically connected with a power control system of the crane through a wire.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a stay cord, control switch, ingenious combination between disc and the three rows of warning lights, through observing three rows of warning lights, operating personnel in the control room can clearly observe the flexible arm of second section, the flexible arm of third section and the flexible respective degree of curvature of arm of fifth section, can effectual prevention flexible arm exceed the limit degree of winding and lift by crane the object like this, in case the discovery flexible arm has exceeded the limit degree of winding and just give up immediately and continue to lift by crane the object, avoid taking place danger.

Drawings

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

FIG. 2 is an enlarged view of a portion of the structure of FIG. 1 according to the present invention;

FIG. 3 is a schematic diagram of a portion of the structure of FIG. 1;

FIG. 4 is a schematic diagram of a portion of the structure of FIG. 1;

FIG. 5 is a schematic view of a portion of the structure of FIG. 1 according to the present invention;

fig. 6 is a side view of a portion of the structure of fig. 1 according to the present invention.

In the figure: the crane comprises a crane body 1, an operation and control chamber 2, a first section of telescopic arm 3, a second section of telescopic arm 4, a third section of telescopic arm 5, a fifth section of telescopic arm 6, a mounting plate 7, a disc 8, a round box 9, a bearing 10, a rotating shaft 11, a control switch 12, an arc-shaped extrusion block 13, a fixing plate 14, a threading hole 15, a central shaft 16, a sleeve 17, a guide cylinder 18, a connecting rod 19, a torsion spring 20, a pull rope 21, a light emitting diode 22 and a first mounting plate 23.

Detailed Description

The invention will be described in further detail with reference to the following detailed description and accompanying drawings:

as shown in fig. 1, 2, 3, 4, 5, and 6, a telescopic arm of a crane includes a crane body 1, an operation chamber 2, and a telescopic arm, wherein the operation chamber 2 is fixedly installed on the crane body 1, and the telescopic arm is hinged to the crane body 1, the telescopic arm includes a first section of telescopic arm 3, a second section of telescopic arm 4, a third section of telescopic arm 5, and a fifth section of telescopic arm 6, the top ends of the bottom surfaces of the first section of telescopic arm 3, the second section of telescopic arm 4, and the third section of telescopic arm 5 are respectively and fixedly installed with a mounting plate 7, a bearing 10 is embedded in the center of the side wall of the mounting plate 7, a mounting hole for embedding the bearing 10 is opened in the center of the side wall of the mounting plate 7, the outer ring of the bearing 10 is fixedly connected with the contact portion of the mounting plate 7, a rotating shaft 11 is fixedly sleeved in the inner ring of the bearing 10, the side end of the rotating shaft 11 extends out of the, the axial lead of disc 8 and the axial lead of pivot 11 are in a straight line, be fixed with arc extrusion piece 13 on disc 8 and the relative lateral wall of mounting panel 7, arc extrusion piece 13 both ends department all is the slope form setting, and arc extrusion piece 13 sets up at disc 8 lateral wall edge, fixed mounting has a plurality of control switch 12 on mounting panel 7 and the relative lateral wall of disc 8, and a plurality of control switch 12 are arc distribution at arc extrusion piece 13 side end department, second section telescopic boom 4, third section telescopic boom 5 and the 6 bottom surface top departments of fifth section telescopic boom fixed mounting respectively have fixed plate 14, and every 14 bottom departments of fixed plate fixed mounting respectively have a circle box 9, horizontal fixed center pin 16 that is equipped with in the circle box 9, the axial lead of center pin 16 and the axial lead of circle box 9 are in same straight line, the cover is equipped with sleeve 17 on the center pin 16, be equipped with two guide cylinders 18 in the sleeve 17, two guide cylinder 18 symmetrical sleeves are established at 16 both ends departments of center pin and rather than swivelling joint, the guide cylinder 18 outside is through a plurality of connecting rod 19 and sleeve 17 inner wall fixed connection, the axial lead of sleeve 17 and the axial lead of center pin 16 are in on the same straight line, the cover is equipped with torsional spring 20 on the center pin 16, the inboard one end of torsional spring 20 and center pin 16 fixed connection, torsional spring 20 outside one end and sleeve 17 inner wall fixed connection, the winding has stay cord 21 on the torsional spring 20, stay cord 21 one end and sleeve 17 fixed connection, the stay cord 21 other end pierces through circle box 9 and rather than the adjacent disc 8 edge fixed connection of lower extreme department, set up the through wires hole 15 that supplies stay cord 21 to pass on the circle box 9 lateral wall, fixed mounting has first mounting panel 23 in the control room 2, fixed mounting has three rows of warning lights on the first mounting panel 23, each row of warning lights is composed of a plurality of light emitting diodes 22.

The control switches 12 on the side wall of each mounting plate 7 are electrically connected with the light emitting diodes 22 of the corresponding row of warning lamps from top to bottom through wires respectively.

The control switch 12 is electrically connected with the power control system of the crane through a lead.

The working principle is as follows: when the telescopic boom of the crane is used and the crane extends the telescopic boom under the condition of not hanging objects, the pull ropes 21 in each round box 9 on the second section of telescopic boom 4, the third section of telescopic boom 5 and the fifth section of telescopic boom 6 are pulled by the disc 8 along with the extension of the second section of telescopic boom 4, the third section of telescopic boom 5 and the fifth section of telescopic boom 6, the sleeve 17 is pulled and rotated in the anticlockwise direction when the pull ropes 21 are pulled, the sleeve 17 drives one end of the torsion spring 20 to synchronously rotate, when the torsion spring 20 rotates in the anticlockwise direction, the torsion spring is wound more and more tightly, the pulled-out pull ropes 21 are tensioned and straightened, at the moment, because the telescopic boom does not hang objects, the original winding degree under the natural state is realized, at the moment, the arc-shaped extrusion block 13 at the bottom of the disc 8 can just press one control switch 12 at the uppermost end of the mounting plate 7, when the control switch 12 at the uppermost end of the mounting plate 7 is pressed, the uppermost one of the leds 22 of each row of warning lights on the first mounting plate 23 in the cab 2 is lit. When the telescopic arm is used for hanging objects, the second section of telescopic arm 4, the third section of telescopic arm 5 and the fifth section of telescopic arm 6 of the telescopic arm can bear different degrees of force, at the moment, the second section of telescopic arm 4, the third section of telescopic arm 5 and the fifth section of telescopic arm 6 can generate different degrees of winding degrees, when the winding degrees are generated, each round box 9 at the side end parts of the second section of telescopic arm 4, the third section of telescopic arm 5 and the fifth section of telescopic arm 6 can generate downward displacement, at the moment, the pull rope 21 can drive the disc 8 to rotate clockwise, the arc-shaped extrusion block 13 on the side wall of the disc 8 can also rotate along with the disc 8 when the disc 8 rotates clockwise, at the moment, the control switch 12 at the uppermost end part of the mounting plate 7 is not extruded, the arc-shaped extrusion block 13 can extrude other control switches 12 clockwise, and according to the different bending radians of the second section of telescopic arm 4, the third section of telescopic arm 5 and the fifth section of telescopic arm 6, the positions of the light-emitting diodes 22 which are lighted on the three rows of warning lamps are also different, and through observing the three rows of warning lamps, an operator in the control room 2 can clearly observe the respective bending degrees of the second section of telescopic arm 4, the third section of telescopic arm 5 and the fifth section of telescopic arm 6, so that the telescopic arm can be effectively prevented from exceeding the limit winding degree to lift objects, and once the telescopic arm is found to exceed the limit winding degree, the object is immediately abandoned to be continuously lifted, and the danger is avoided.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A crane telescopic boom comprises a crane body (1), an operation chamber (2) and a telescopic boom, wherein the operation chamber (2) is fixedly arranged on the crane body (1), the telescopic boom is hinged on the crane body (1), and the telescopic boom consists of a first section of telescopic boom (3), a second section of telescopic boom (4), a third section of telescopic boom (5) and a fifth section of telescopic boom (6), and is characterized in that; the telescopic arm of the first section (3), the telescopic arm of the second section (4) and the telescopic arm of the third section (5) are respectively and fixedly provided with a mounting plate (7) at the top end, a bearing (10) is embedded at the center of the side wall of the mounting plate (7), a mounting hole for embedding the bearing (10) is formed in the center of the side wall of the mounting plate (7), the outer ring of the bearing (10) is fixedly connected with the contact part of the mounting plate (7), a rotating shaft (11) is fixedly sleeved in the inner ring of the bearing (10), the side end of the rotating shaft (11) extends out of the inner ring of the bearing (10) and is fixed with a disc (8), the axial lead of the disc (8) and the axial lead of the rotating shaft (11) are positioned on the same straight line, arc-shaped extrusion blocks (13) are fixed on the opposite side walls of the disc (8) and the mounting plate (7), the two ends of the arc-shaped extrusion blocks (13) are both in, the mounting plate (7) and the opposite side wall of the disc (8) are fixedly provided with a plurality of control switches (12), the control switches (12) are distributed in an arc shape at the side end of the arc-shaped extrusion block (13), the bottom surfaces of the second section of telescopic arm (4), the third section of telescopic arm (5) and the fifth section of telescopic arm (6) are respectively and fixedly provided with a fixed plate (14), the bottom end of each fixed plate (14) is respectively and fixedly provided with a round box (9), a central shaft (16) is transversely and fixedly arranged in the round box (9), the axial lead of the central shaft (16) and the axial lead of the round box (9) are positioned on the same straight line, the central shaft (16) is sleeved with a sleeve (17), two guide cylinders (18) are arranged in the sleeve (17), and the two guide cylinders (18) are symmetrically sleeved at the two ends of the central shaft (16) and are rotatably connected with the sleeve, the guide cylinder (18) outside is through a plurality of connecting rod (19) and sleeve (17) inner wall fixed connection, the axial lead of sleeve (17) and the axial lead of center pin (16) are located on same straight line, the cover is equipped with torsional spring (20) on center pin (16), the inboard one end of torsional spring (20) and center pin (16) fixed connection, torsional spring (20) outside one end and sleeve (17) inner wall fixed connection, the winding has stay cord (21) on torsional spring (20), stay cord (21) one end and sleeve (17) fixed connection, stay cord (21) other end pierces through circle box (9) and rather than the adjacent disc (8) edge fixed connection of lower extreme department, set up through wires hole (15) that supply stay cord (21) to pass on circle box (9) lateral wall, control room (2) internal fixation and install first mounting panel (23), three rows of warning lamps are fixedly mounted on the first mounting plate (23), and each row of warning lamps consists of a plurality of light-emitting diodes (22).

2. A telescopic boom for cranes, according to claim 1, characterized in that: the control switches (12) on the side wall of each mounting plate (7) are electrically connected with the light-emitting diodes (22) of the corresponding warning lamp row from top to bottom through wires respectively.

3. A telescopic boom for cranes, according to claim 1, characterized in that: the control switch (12) is electrically connected with an electric control system of the crane through a lead.