CN215711073U

CN215711073U - Synchronous hoisting mechanism in double-hoisting system

Info

Publication number: CN215711073U
Application number: CN202122192808.2U
Authority: CN
Inventors: 刘云峰; 邵珂; 刘正连
Original assignee: CHANGZHOU CHANGKUANG HOISTING MACHINERY CO LTD
Current assignee: CHANGZHOU CHANGKUANG HOISTING MACHINERY CO LTD
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-02-01
Anticipated expiration: 2031-09-10

Abstract

The utility model relates to the technical field of crane equipment, in particular to a synchronous hoisting mechanism in a double-hoisting system; comprises a moving frame; the series mechanism is fixedly arranged on the moving frame; the two rope winding and unwinding devices are fixedly arranged on the moving frame and are used for winding and unwinding the mooring rope; each cable is wrapped by one movable pulley hook; the series mechanism comprises a shell, a series connecting rod, a pin shaft and two proximity switches; the shell is provided with sliding grooves, the middle section of the pin shaft penetrates through the serial connecting rods, and two ends of the pin shaft respectively slide in the two sliding grooves; two ends of the serial link rod extend to the outer side of the shell and are respectively fixedly connected with one ends of the two cables; the two proximity switches are fixedly arranged on one side of the shell and are arranged on two sides of the pin shaft; the height of the detection end of the proximity switch is the same as that of the sliding groove. The utility model aims to provide a synchronous lifting mechanism in a double-lifting system, which ensures that two sides move synchronously so as to ensure that a lifted object moves stably.

Description

Synchronous hoisting mechanism in double-hoisting system

Technical Field

The utility model relates to the technical field of crane equipment, in particular to a synchronous hoisting mechanism in a double-hoisting system.

Background

The lifting system is a necessary system for realizing the lifting motion of an object in a crane. When the crane lifts a large object and has high precision requirement on the lifting process, two points of the object are lifted by using two sets of lifting systems, and the two points to be lifted must be ensured to be lifted or lowered at the same speed, so that the lifted object cannot be inclined in the lifting or lowering process. In the prior art, the speed of the rope reeling and unreeling of the two-side hoisting system is generally ensured to be consistent through electric control, but the sizes of the pulleys, the reeling wheels and other parts of the two-side hoisting system cannot be completely consistent, so that the actual movement speeds of two points to be hoisted are different, and finally the hoisted object is inclined.

In view of the above problems, the designer designs a synchronous lifting mechanism in a double-lifting system based on practical experience and professional knowledge which are abundant for years in engineering application of such products and by cooperating with the application of theory and actively carrying out research and innovation, so as to ensure that the two sides move synchronously, thereby enabling the lifted object to move stably.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a synchronous hoisting mechanism in a double-hoisting system aiming at the defects in the prior art, which ensures the synchronous motion of two sides by connecting cables on the two sides in series and detecting the deviation of the serial part, thereby ensuring the stable motion of a hoisted object.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the method comprises the following steps: the moving frame is driven by the crane body to move;

the series mechanism is fixedly arranged on the moving frame and is used for connecting one ends of two cables in series;

the two rope retracting devices are fixedly arranged on the moving frame; each rope winding and unwinding device is used for winding and unwinding the other end of one mooring rope;

the two movable pulley hooks are used for being connected with a hung object; each cable is wrapped by one movable pulley hook;

the series mechanism comprises a shell, a series connecting rod, a pin shaft and two proximity switches; two side surfaces of the shell are respectively provided with a sliding groove, the middle section of the pin shaft penetrates through the serial connecting rod, and two ends of the pin shaft respectively slide in the two sliding grooves; two ends of the serial link rod extend to the outer side of the shell and are respectively and fixedly connected with one ends of the two mooring ropes; the two proximity switches are fixedly arranged on one side of the shell and are arranged on two sides of the pin shaft; the height of the detection end of the proximity switch is the same as that of the sliding groove.

Further, the serial rod comprises a pulling plate and two rope clamps; the pin shaft is fixedly arranged on the pulling plate; the two rope clamps are respectively hinged with the two ends of the pulling plate and used for fixing the mooring rope.

Furthermore, the tandem mechanism further comprises two reinforcing plates which are symmetrically and fixedly arranged on two sides of the tandem rod, and the middle section of the pin shaft penetrates through the reinforcing plates.

Furthermore, the pin shafts are arranged in two numbers and are fixedly arranged on the serial connecting rods at intervals in parallel.

Further, the both ends of round pin axle all are provided with and extend to the extension section in the shell outside, and every the extension section all sets up the fixture block, the diameter of fixture block is greater than the width of sliding tray.

Furthermore, the tandem mechanism further comprises two copper shaft sleeves which are respectively sleeved at two ends of the pin shaft and respectively extend into one of the sliding grooves.

Furthermore, the device also comprises corner pulleys which are rotatably arranged on the moving frame and symmetrically arranged on two sides of the serial mechanism; each cable is lapped on one corner pulley.

The rotating rollers are rotatably arranged on the moving frame and are arranged in the circumferential direction of the corner pulleys; the cable is arranged between the corner pulley and the rotating roller.

Through the technical scheme of the utility model, the following technical effects can be realized:

the synchronous hoisting mechanism in the double-hoisting system is designed, two mooring ropes are connected in series through a serial connecting rod of the serial connecting mechanism, two proximity switches are used for detecting the positions of pin shafts fixed on the serial connecting rod, when the winding and unwinding speeds of the two mooring ropes are inconsistent, the serial connecting rod can deviate towards the part of the shorter mooring rope which is not wound and unwound by the winding and unwinding device, the pin shaft triggers the proximity switch corresponding to one side at the moment, the proximity switch generates a signal to remind operating personnel, or the signal is directly transmitted to a master controller to enable the master controller to automatically adjust the winding and unwinding speeds of the winding and unwinding device, and the motion synchronization of two sides is ensured, so that a hoisted object can move stably.

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 described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a synchronous hoisting mechanism in a double-hoisting system in an embodiment of the utility model;

FIG. 2 is an enlarged view of FIG. 1 at A in accordance with an embodiment of the present invention;

FIG. 3 is an enlarged view of FIG. 1 at B in accordance with an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken at C of FIG. 2 in an embodiment of the present invention;

FIG. 5 is a top view of a tandem mechanism in an embodiment of the present invention;

reference numerals: the movable frame 1, the tandem mechanism 2, the shell 21, the sliding groove 211, the tandem rod 22, the pulling plate 221, the rope clamp 222, the pin shaft 23, the fixture block 231, the proximity switch 24, the reinforcing plate 25, the shaft sleeve 26, the cable 3, the rope winding and unwinding device 4, the movable pulley hook 5, the corner pulley 6 and the rotating roller 7.

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 a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

A synchronous hoisting mechanism in a double-hoisting system is shown in figures 1-5 and comprises: the moving frame 1 is driven by a crane body to move; the series mechanism 2 is fixedly arranged on the moving frame 1 and is used for connecting one ends of two cables 3 in series; the two rope winding and unwinding devices 4 are fixedly arranged on the moving frame 1; each rope winding and unwinding device 4 is used for winding and unwinding the other end of one mooring rope 3; two movable pulley hooks 5 for connecting with the hung object; each cable 3 is wrapped around a travelling block hook 5.

Wherein, the tandem mechanism 2 comprises a shell 21, a tandem rod 22, a pin 23 and two proximity switches 24; two side surfaces of the shell 21 are respectively provided with a sliding groove 211, the middle section of the pin shaft 23 penetrates through the serial link 22, and two ends of the pin shaft respectively slide in the two sliding grooves 211; two ends of the serial link rod 22 extend to the outer side of the shell 21 and are respectively fixedly connected with one ends of the two cables 3; the two proximity switches 24 are fixedly arranged on one side of the shell 21 and are arranged on two sides of the pin shaft 23; the height of the detection end of the proximity switch 24 is the same as the height of the slide groove 211.

Specifically, two movable pulley hooks 5 are connected with two points of a hung object, two rope winding and unwinding devices 4 are used for winding the cable 3, the movable pulley hooks 5 gradually ascend along with the shortening of the part of the cable 3 which is not wound into the rope winding and unwinding devices 4, and finally the ascending of the hung object is completed; then the crane body moves to drive the moving frame 1 to move, so that the synchronous hoisting mechanism integrally moves to a target place, the rope winding and unwinding device 4 unwinds the mooring rope 3, and the movable pulley hook 5 gradually descends to realize the descending of the hoisted object. The two mooring ropes 3 are connected in series by the series rod 22 of the series mechanism 2, the pin shaft 23 fixed on the series rod 22 is subjected to position detection by the two proximity switches 24, when the winding and unwinding speeds of the two mooring ropes 3 are inconsistent, the series rod 22 can deviate towards the part of the mooring rope 3 which is shorter than the rope winding and unwinding device 4, the pin shaft 23 triggers the proximity switch 24 on one corresponding side, the proximity switch 24 generates a signal to remind an operator, or directly transmits the signal to the master controller to enable the master controller to automatically adjust the winding and unwinding speeds of the rope winding and unwinding device 4, and the two sides are ensured to move synchronously, so that a hung object can move stably.

As the cable 3 inevitably shakes during operation, in order to avoid the shaking from affecting the normal sliding of the tandem bar 22, as a preferred embodiment of the tandem bar 22, as shown in fig. 2, the tandem bar 22 includes a pulling plate 221 and two rope clamps 222; the pin shaft 23 is fixedly arranged on the pulling plate 221; two rope clamps 222 are respectively hinged with two ends of the pulling plate 221 for fixing the rope 3. The articulated rope clip 222 can relieve the up-and-down shaking generated by the mooring rope 3, so that the pulling plate 221 can slide horizontally more stably, and the detection accuracy is improved.

Because the quality of the hung object is usually great, the pulling force that hawser 3 transmitted to on the tandem rod 22 also can be great, in order to avoid the pressure of tandem rod 22 to the side of round pin axle 23 too big to lead to round pin axle 23 to warp, split, as shown in fig. 4~5, tandem mechanism 2 still includes two reinforcing plates 25, the fixed both sides that set up at tandem rod 22 of symmetry, the reinforcing plate 25 of interlude of the middle section of round pin axle 23, the middle section side of round pin axle 23 can paste with tandem rod 22 and two reinforcing plates 25 simultaneously during operation, increased area of contact, effectively reduced the pressure to round pin axle 23 side.

As a preferred embodiment of the pin 23, as shown in fig. 2, two pins 23 are provided and are fixedly disposed on the tandem bar 22 in parallel at intervals. The larger the interval between the two pin shafts 23 is, the closer the two pin shafts are to the proximity switches 24 on the two sides, so that the detection of the synchronous situation of the two-side movement is more sensitive; the size of the interval can be selected according to the use requirement. Meanwhile, the two pin shafts 23 can effectively prevent the serial link rod 22 from rotating in the vertical direction, and the stability is improved.

In order to prevent the two ends of the pin 23 from falling off from the sliding groove 211, as shown in fig. 4, the two ends of the pin 23 are provided with extension sections extending to the outer side of the housing 21, each extension section is provided with a latch 231, and the diameter of each latch 231 is greater than the width of the sliding groove 211.

In order to reduce the friction between the side wall of the pin 23 and the inner wall of the sliding groove 211, as shown in fig. 4, the tandem mechanism 2 further includes two copper bushings 26 respectively sleeved at two ends of the pin 23 and respectively extending into one of the sliding grooves 211.

As one way of protecting the cable 3, as shown in fig. 3, the device further comprises a corner pulley 6 which is rotatably arranged on the moving frame 1 and symmetrically arranged at two sides of the series mechanism 2; each cable 3 is lapped on a corner pulley 6, so that the cable 3 is prevented from being worn by sharp corners of the moving frame 1; at the same time, the corner pulley 6 also keeps the part of the cable 3 connected to the tandem mechanism 2 horizontal, improving the stability of the tandem link 22 when sliding.

In order to prevent the cable 3 from falling off from the corner pulley 6, as shown in fig. 3, the device further comprises a plurality of rotating rollers 7 which are rotatably arranged on the moving frame 1 and are arranged in the circumferential direction of the corner pulley 6; the cable 3 is arranged between the corner pulley 6 and the roller 7.

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 embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A synchronous hoisting mechanism in a double-hoisting system is characterized by comprising

The moving frame (1) is driven by a crane body to move;

the series mechanism (2) is fixedly arranged on the moving frame (1) and is used for connecting one ends of the two mooring ropes (3) in series;

the two rope winding and unwinding devices (4) are fixedly arranged on the moving frame (1); each rope winding and unwinding device (4) is used for winding and unwinding the other end of one mooring rope (3);

two movable pulley hooks (5) for connecting with the hung object; each cable (3) is wrapped around one movable pulley hook (5);

the series mechanism (2) comprises a shell (21), a series connecting rod (22), a pin shaft (23) and two proximity switches (24); two side surfaces of the shell (21) are respectively provided with a sliding groove (211), the middle section of the pin shaft (23) penetrates through the serial link rod (22), and two ends of the pin shaft respectively slide in the two sliding grooves (211); two ends of the serial link rod (22) extend to the outer side of the shell (21) and are respectively and fixedly connected with one ends of the two mooring ropes (3); the two proximity switches (24) are fixedly arranged on one side of the shell (21) and are arranged on two sides of the pin shaft (23); the height of the detection end of the proximity switch (24) is the same as that of the sliding groove (211).

2. Synchronous hoisting mechanism in a twin hoisting system according to claim 1, characterized in that the tandem bar (22) comprises a pulling plate (221) and two rope clamps (222); the pin shaft (23) is fixedly arranged on the pulling plate (221); the two rope clamps (222) are respectively hinged with two ends of the pulling plate (221) and used for fixing the cable (3).

3. The synchronous hoisting mechanism in the dual hoisting system according to claim 1, wherein the tandem mechanism (2) further comprises two reinforcing plates (25) symmetrically and fixedly arranged at two sides of the tandem rod (22), and the middle section of the pin shaft (23) penetrates through the reinforcing plates (25).

4. Synchronous hoisting mechanism in a dual hoisting system according to claim 1, characterized in that two pins (23) are provided and are fixedly arranged on the tandem bar (22) in parallel and at intervals.

5. The synchronous hoisting mechanism in the dual hoisting system according to claim 1, wherein the two ends of the pin shaft (23) are provided with extension sections extending to the outer side of the housing (21), each extension section is provided with a clamping block (231), and the diameter of each clamping block (231) is greater than the width of the sliding groove (211).

6. The synchronous hoisting mechanism in the dual hoisting system according to claim 1, wherein the tandem mechanism (2) further comprises two copper bushings (26) respectively sleeved at two ends of the pin shaft (23) and respectively extending into one of the sliding grooves (211).

7. The synchronous hoisting mechanism in the double hoisting system according to any one of claims 1 to 6, further comprising corner pulleys (6) rotatably arranged on the moving frame (1) and symmetrically arranged on two sides of the serial mechanism (2); each cable (3) is lapped on one corner pulley (6).

8. The synchronous hoisting mechanism in the double hoisting system according to claim 7, further comprising a plurality of rotating rollers (7) rotatably arranged on the moving frame (1) and arranged in the circumferential direction of the corner pulleys (6); the cable (3) is arranged between the corner pulley (6) and the rotating roller (7).