CN217076756U

CN217076756U - Crane with contactless limiting function

Info

Publication number: CN217076756U
Application number: CN202220782331.5U
Authority: CN
Inventors: 郑昊; 康健; 左志平; 陆海; 宋钢石; 熊宏亮
Original assignee: Anshan Lifting Mechanism Co ltd
Current assignee: Anshan Lifting Mechanism Co ltd
Priority date: 2022-04-01
Filing date: 2022-04-01
Publication date: 2022-07-29
Anticipated expiration: 2032-04-01

Abstract

The utility model discloses a hoist with contactless limit function, including fixed bolster and crossbeam, the crossbeam slides and locates on the fixed bolster, be equipped with the walking car on the crossbeam, walking car bottom is equipped with electric block mechanism, electric block mechanism includes fixed cover and lifting hook, the symmetry is equipped with two sets of installation chambeies in the fixed cover, the installation chamber rotates and is equipped with the winding roller, it has one deck wire rope to coil on the winding roller, the lifting hook is connected with the wire rope free end on two sets of winding rollers, installation chamber bottom open-ended both sides all are equipped with electromagnetism proximity switch, and are two sets of electromagnetism proximity switch is close to the both ends of winding roller respectively. The utility model relates to a hoist technical field specifically indicates a hoist with contactless limit function, controls electric block through the electromagnetic proximity switch device who installs two sets of perpendicular to wire rope respectively additional respectively at the ascending limit end with the decline of hoist reel side wire rope.

Description

Crane with contactless limiting function

Technical Field

The utility model relates to a hoist technical field specifically indicates a hoist with contactless limit function.

Background

At present, lifting and descending limit of international cranes generally adopt 3 modes, one mode is an upper limit and a lower limit in a multifunctional transmission mode; the second is weight type ascending limit; the third is a special fire-cut-off upper and lower limiter for the electric hoist.

The three forms have the unified disadvantage of fixed stations and very high failure. Through years of experiments, non-contact photoelectric and laser switches are adopted at the head end and the tail end of the steel wire rope in sequence, and due to the fact that the two switches are influenced by the environment, the photoelectric and laser irradiation surfaces are wide, and misoperation is often caused.

SUMMERY OF THE UTILITY MODEL

Aiming at the situation, in order to overcome the defects of the prior art, the crane with the non-contact limiting function provided by the scheme adopts the electromagnetic proximity switch, two sets of electromagnetic proximity switch devices perpendicular to the steel wire rope are respectively and additionally arranged at the ascending and descending limit ends of the steel wire rope on the side surface of the crane winding drum, the electromagnetic proximity switch devices are 30-50 mm away from the steel wire rope, the distance is adjustable but not in contact with the steel wire rope, and meanwhile, the steel wire rope is considered to swing without contact when in lifting.

The utility model adopts the following technical scheme: the crane with the non-contact limiting function comprises a fixed support and a cross beam, wherein the cross beam is arranged on the fixed support in a sliding manner, the crossbeam is provided with a walking vehicle, the bottom of the walking vehicle is provided with an electric hoist mechanism, the electric hoist mechanism comprises a fixed cover and a lifting hook, two groups of mounting cavities are symmetrically arranged in the fixed cover, the mounting cavities are rotatably provided with winding rollers, a layer of steel wire rope is wound on the winding rollers, the lifting hook is connected with the free ends of the steel wire ropes on the two groups of winding rollers, electromagnetic proximity switches are arranged on two sides of the opening at the bottom of the mounting cavity, the two groups of electromagnetic proximity switches are respectively close to two ends of the winding rollers, the device is used for detecting two limit ends of the steel wire rope, a first motor is arranged on the fixed cover and is connected with a central shaft of the winding roller through a transmission mechanism, and the electromagnetic proximity switch is electrically connected with the first motor.

The further optimization as this scheme, drive mechanism includes tep reel one, tep reel two, tep reel three and tep reel four, the output shaft of motor one extends to the both ends of fixed cover, tep reel one and tep reel two-way connection are located on the output shaft of motor one, tep reel three and tep reel four do not cup joint on the center pin of locating two sets of winding rollers, cup joint between tep reel one and the tep reel three and be equipped with drive belt one, cup joint between tep reel two and the tep reel four and be equipped with drive belt two.

In order to improve the heat dissipation effect of the first motor, a first bevel gear is arranged on a central shaft of the winding roller, a connecting shaft is arranged on the fixing cover in a rotating mode, a second bevel gear is arranged on the connecting shaft and meshed with the first bevel gear, the top end of the connecting shaft extends to the outer side of the fixing cover and is located below the first motor, and heat dissipation fan blades are arranged at the top end of the connecting shaft.

Preferably, a motor box is arranged at the upper end of the cross beam, a second motor is arranged in the motor box, a driving gear is arranged on an output shaft of the second motor, a rack is arranged on the fixed support and meshed with the driving gear, and the second motor is used for driving the cross beam to move along the fixed support.

Preferably, the electromagnetic proximity switches are detachably arranged on the fixed cover, and the distance between each two groups of electromagnetic proximity switches and the two limit ends of the steel wire rope is 30-50 mm.

Adopt above-mentioned structure the utility model discloses the beneficial effect who gains as follows:

according to the scheme, two sets of electromagnetic proximity switch devices perpendicular to the steel wire rope are additionally arranged at the ascending limit end and the descending limit end of the steel wire rope on the side surface of the crane drum respectively, the electromagnetic proximity switch devices are 30-50 mm away from the steel wire rope, the distance is adjustable but is not in contact with the steel wire rope, and meanwhile, the steel wire rope is considered to swing without contact when taking off and landing;

according to the scheme, the connecting shaft can be synchronously driven to rotate when the first motor works, and the heat dissipation fan blades are driven to rotate to dissipate heat of the first motor.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the overall structure of a crane with a non-contact limiting function according to the present invention;

fig. 2 is a schematic structural diagram of the electric hoist mechanism of the crane with the non-contact limiting function in the scheme.

The device comprises a fixed support 1, a fixed support 2, a cross beam 3, a walking vehicle 4, an electric hoist mechanism 5, a fixed cover 6, a lifting hook 7, an installation cavity 8, a winding roller 9, a steel wire rope 10, an electromagnetic proximity switch 11, a motor I, a motor 12, a belt reel I, a belt reel II, a belt reel III, a belt reel 15, a belt reel IV, a belt reel 16, a transmission belt I, a transmission belt 17, a transmission belt II, a transmission belt 18, a bevel gear I, a connection shaft 19, a connection shaft 20, a bevel gear II, a transmission belt 21, a heat dissipation fan blade 22, a motor box 23, a driving gear 24 and a rack.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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 work belong to the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

As shown in fig. 1-2, this scheme has hoist of contactless limit function, including fixed bolster 1 and crossbeam 2, crossbeam 2 slides and locates on fixed bolster 1, be equipped with walking car 3 on the crossbeam 2, walking car 3 bottom is equipped with electric block mechanism 4, electric block mechanism 4 includes fixed cover 5 and lifting hook 6, the bottom of walking car 3 is located to fixed cover 5, the symmetry is equipped with two sets of installation cavity 7 in the fixed cover 5, installation cavity 7 rotates and is equipped with winding roller 8, it has one deck wire rope 9 to coil on the winding roller 8, lifting hook 6 is connected with the wire rope 9 free end on two sets of winding roller 8, installation cavity 7 bottom open-ended both sides all are equipped with electromagnetism proximity switch 10, two sets of electromagnetism proximity switch 10 are close to the both ends of winding roller 8 respectively, be equipped with motor one 11 on the fixed cover 5, motor one 11 is connected with the center pin of winding roller 8 through drive mechanism, electromagnetism proximity switch 10 and motor one 11 electric connection.

As shown in fig. 2, the transmission mechanism includes a first belt reel 12, a second belt reel 13, a third belt reel 14 and a fourth belt reel 15, an output shaft of the first motor 11 extends to two ends of the fixed cover 5, the first belt reel 12 and the second belt reel 13 are sleeved on the output shaft of the first motor 11, the third belt reel 14 and the fourth belt reel 15 are respectively sleeved on the central shaft of the two sets of winding rollers 8, a first transmission belt 16 is sleeved between the first belt reel 12 and the third belt reel 14, a second transmission belt 17 is sleeved between the second belt reel 13 and the fourth belt reel 15, a first bevel gear 18 is arranged on the central shaft of the set of winding rollers 8, a connecting shaft 19 is rotatably arranged on the fixed cover 5, a second bevel gear 20 is arranged on the connecting shaft 19, the second bevel gear 20 is meshed with the first bevel gear 18, the top end of the connecting shaft 19 extends to the outer side of the fixed cover 5 and is located below the first motor 11, and heat dissipation fan blades 21 are arranged on the top end of the connecting shaft 19.

As shown in fig. 1, a motor box 22 is disposed at the upper end of the cross beam 2, a second motor (not shown) is disposed in the motor box 22, a driving gear 23 is disposed on an output shaft of the second motor, a rack 24 is disposed on the fixed bracket 1, and the rack 24 is engaged with the driving gear 23.

Under the initial condition, lifting hook 6 is close to fixed cover 5, during the specific use, a 11 corotation of starting motor drives two sets of winding rollers 8 and releases wire rope 9 simultaneously to make lifting hook 6 move down, when wire rope 9 was released and is taken off to the limit, wire rope 9 was close to one side electromagnetism proximity switch 10, close motor 11 through electromagnetism proximity switch 10, hang good article after, starting motor 11 reversal carries out the rolling to wire rope 9, when the rolling was extremely limited, wire rope 9 was close to the electromagnetism proximity switch 10 of opposite side, utilize another group electromagnetism proximity switch 10 to close motor 11.

When the motor I11 works, the connecting shaft 19 is driven to rotate, so as to drive the radiating fan 21 to rotate to radiate heat to the motor I11.

The second motor can drive the beam 2 to move on the fixed support 1 when working.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a hoist with contactless limit function which characterized in that: including fixed bolster (1) and crossbeam (2), crossbeam (2) slide and locate on fixed bolster (1), be equipped with walking car (3) on crossbeam (2), walking car (3) bottom is equipped with electric block mechanism (4), electric block mechanism (4) are including fixed cover (5) and lifting hook (6), fixed cover (5) internal symmetry is equipped with two sets of installation cavity (7), installation cavity (7) rotate and are equipped with winding roller (8), it has one deck wire rope (9) to wind on winding roller (8), lifting hook (6) are connected with wire rope (9) free end on two sets of winding roller (8), installation cavity (7) bottom open-ended both sides all are equipped with electromagnetism proximity switch (10), and two sets of electromagnetism proximity switch (10) are close to the both ends of winding roller (8) respectively, be equipped with motor (11) on fixed cover (5), the first motor (11) is connected with a central shaft of the winding roller (8) through a transmission mechanism, and the electromagnetic proximity switch (10) is electrically connected with the first motor (11).

2. A crane with a contactless position-limiting function according to claim 1, wherein: drive mechanism includes tep reel (12), tep reel two (13), tep reel three (14) and tep reel four (15), the output shaft of motor one (11) extends to the both ends of fixed cover (5), tep reel one (12) and tep reel two (13) cup joint locate on the output shaft of motor one (11), tep reel three (14) and tep reel four (15) cup joint respectively and locate on the center pin of two sets of winding rollers (8), cup joint between tep reel one (12) and tep reel three (14) and be equipped with drive belt one (16), cup joint between tep reel two (13) and tep reel four (15) and be equipped with drive belt two (17).

3. A crane with a contactless position-limiting function according to claim 2, characterized in that: a first bevel gear (18) is arranged on a central shaft of the winding roller (8), a connecting shaft (19) is arranged on the fixed cover (5) in a rotating mode, a second bevel gear (20) is arranged on the connecting shaft (19), the second bevel gear (20) is meshed with the first bevel gear (18), the top end of the connecting shaft (19) extends to the outer side of the fixed cover (5) and is located below the first motor (11), and heat dissipation fan blades (21) are arranged on the top end of the connecting shaft (19).

4. A crane with a contactless position-limiting function according to claim 1, wherein: the beam (2) upper end is equipped with motor case (22), be equipped with motor two in motor case (22), be equipped with driving gear (23) on the output shaft of motor two, be equipped with rack (24) on fixed bolster (1), rack (24) and driving gear (23) meshing.

5. A crane with a contactless position-limiting function according to claim 1, wherein: the electromagnetic proximity switches (10) are detachably arranged on the fixed cover (5), and the distance between the two electromagnetic proximity switches (10) and the two limit ends of the steel wire rope (9) is 30-50 mm.