CN212245960U

CN212245960U - Steel wire rope groove-jumping-preventing alarm device and crane trolley

Info

Publication number: CN212245960U
Application number: CN202021412402.XU
Authority: CN
Inventors: 孙微; 马舜; 吴晋桃; 周同
Original assignee: HANGZHOU SPECIAL EQUIPMENT INSPECTION AND RESEARCH INSTITUTE
Current assignee: HANGZHOU SPECIAL EQUIPMENT INSPECTION AND RESEARCH INSTITUTE
Priority date: 2020-07-16
Filing date: 2020-07-16
Publication date: 2020-12-29
Anticipated expiration: 2030-07-16

Abstract

The utility model discloses a wire rope prevents jumping groove alarm device and contains this kind of alarm device's monkey belongs to hoist technical field. The utility model aims at providing a solve and how to realize the technical scheme who reports to the police when taking place to jump the groove phenomenon and use this kind of technical scheme on monkey, and then reduce the emergence of this type of incident. The purpose of the utility model is realized like this: a steel wire rope groove-jumping-preventing alarm device comprises a horizontal rod, wherein the horizontal rod is arranged on the upper side of a fixed pulley and used for preventing a steel wire rope from jumping; the micro switch and the horizontal rod can move relatively; the micro switch is used for being connected into a safety loop of the crane, and the alarm aiming at the groove jumping phenomenon is realized by triggering the micro switch after the horizontal rod moves. The utility model discloses a set up the horizon bar in the upper end of movable pulley, utilize the horizon bar to realize preventing the purpose of job-hoping. The right end of the horizontal rod is provided with a microswitch which can sense the up-and-down fluctuation of the horizontal rod, so that the alarm can be given in time.

Description

Steel wire rope groove-jumping-preventing alarm device and crane trolley

Technical Field

The utility model belongs to the technical field of the hoist, refer in particular to a wire rope prevents jumping groove alarm device and contains this kind of alarm device's monkey.

Background

At present, hoisting machinery is widely used in various industrial places as one of important components of special equipment. In the hoisting process of the crane, the equipment accident of steel wire rope groove jumping is caused by misoperation or inclined pulling. The steel wire rope jumping refers to that the steel wire rope rebounds and breaks away from the fixed pulley due to certain factors and is clamped in a pulley gap or on a pulley shaft, so that normal hoisting operation cannot be performed if the steel wire rope is light, operation progress is influenced, and the steel wire rope directly rubs against the side face of the pulley or the pulley shaft if the steel wire rope is heavy, so that the steel wire rope is broken, the pulley is damaged, the pulley shaft is broken, and heavy equipment or personal accidents that heavy objects fall are caused. In the prior art, the protective cover is arranged above the fixed pulley to prevent the steel wire rope from jumping the groove, the method proves that the steel wire rope cannot be completely prevented from jumping the groove in practice, and a driver cannot know the working state of the steel wire rope in time to continue operating the crane under the condition of the steel wire rope jumping, so that equipment accidents are caused. Therefore, a crane steel wire rope groove-jumping-preventing alarm device capable of monitoring the working state of a steel wire rope, high in safety and strong in practicability is needed.

To solve the above technical problems, there are chinese patents, patent numbers: 2019203071736 which discloses a height adjustable bracket for crane, and a structure for preventing jumping. Although the above patent changes the traditional way of preventing the steel wire rope from jumping the groove by adopting the protective cover, the above patent does not provide a technical scheme how to realize the alarm if the groove jumping phenomenon occurs.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a solve and how to realize the technical scheme who reports to the police when taking place to jump the groove phenomenon and use this kind of technical scheme on monkey, and then reduce the emergence of this type of incident.

The purpose of the utility model is realized like this: a steel wire rope groove-jumping-preventing alarm device comprises

The horizontal rod is arranged on the upper side of the fixed pulley and used for preventing the steel wire rope from jumping out of the groove;

the microswitch and the horizontal rod can move relatively; the microswitch is used for being connected into a safety loop of the crane, and the microswitch is triggered to realize the alarm aiming at the groove jumping phenomenon after the horizontal rod moves.

Preferably, a driving plate is rotatably arranged on the upper side of the horizontal rod; the micro switch is arranged on the lower side of the driving plate; the micro switch and the horizontal rod are respectively positioned at the left side and the right side of the rotating fulcrum of the driving plate.

Preferably, a right bracket is arranged on the right side of the horizontal rod, and the driving plate is hinged with the right bracket.

Preferably, the right bracket is a portal frame, and a rotation fulcrum of the driving plate is arranged on the left side of the portal frame.

Preferably, the left side of the horizontal rod is hinged with a left bracket.

Preferably, one side of the microswitch is provided with a switch bracket connected with the trolley frame.

Preferably, a spring is connected to the lower end of the right side of the horizontal rod, and the spring is in a stretched state normally.

Preferably, the lower side of the right end of the horizontal rod abuts against the horizontal bracket.

A crane trolley comprises the steel wire rope groove-jumping-preventing alarm device; the trolley is characterized by further comprising a trolley frame, a fixed pulley used for bearing the steel wire rope is arranged on the trolley frame, a horizontal rod is arranged at the upper end of the fixed pulley, and the size of a gap between the horizontal rod and the fixed pulley is smaller than the diameter size of the steel wire rope.

Preferably, the upper side of the trolley frame is connected with a spring; the upper side of the trolley frame is connected with the switch bracket.

Compared with the prior art, the utility model outstanding and profitable technological effect is:

1. the utility model discloses a set up the horizon bar in the upper end of movable pulley, utilized the horizon bar to realize preventing the purpose of job-hoping. Meanwhile, a microswitch capable of sensing the vertical fluctuation of the horizontal rod is arranged at the right end of the horizontal rod, and the problem of the occurrence of the groove jumping of the steel wire rope can be rapidly judged by sensing whether the fluctuation amplitude of the horizontal rod exceeds a set value or not. Therefore, the design scheme can not only prevent groove jumping, but also alarm in time when groove jumping occurs.

2. The utility model discloses still set up a spring through the lower extreme at the horizon bar, utilize the pulling force of spring to exert one to the horizon bar and exert one and to exert down power to can reduce the vibration of horizon bar, prevent because the hoist is at the in-process of traveling, because the vibration causes the horizon bar to lift up, thereby cause the micro-gap switch malfunction, lead to hoist bring to rest, the reliability reinforcing.

3. The utility model discloses an with micro-gap switch circuit access hoist safety circuit, make under the condition that wire rope jumps the groove, the hoist can automatic shutdown, reminds driver inspection wire rope, pulley, has guaranteed the normal operating of hoist.

Drawings

FIG. 1 is a side view of the present invention.

Fig. 2 is a right-view structural diagram of the present invention.

In the figure: 1. the device comprises a trolley frame, 2, a fixed pulley, 3, a steel wire rope, 4, a left support, 5, a right support, 6, a horizontal rod, 7, a driving plate, 8, a horizontal support, 9, a switch support, 10, a micro switch, 11 and a spring.

Detailed Description

The invention will be further described with reference to specific embodiments.

The first embodiment is as follows: as shown in figure 1, the crane trolley with the steel wire rope groove-jumping-preventing alarm device comprises a trolley frame 1, a left support 4, a right support 5, a horizontal rod 6, a driving plate 7, a horizontal support 8, a switch support 9, a microswitch 10 and a spring 11.

The left support 4 and the right support 5 are respectively fixed on the trolley frame 1 at two axial sides of the fixed pulley 2, screw holes are formed in two sides of the left support 4, a screw hole is formed in the left end portion of the horizontal rod 6, the diameter of the screw hole is slightly larger than that of a pin shaft, the left support 4 is connected with the horizontal rod 6 through the pin shaft, and the horizontal rod 6 can rotate around the left support 4 by taking the pin shaft as the center; a horizontal bracket 8 is arranged below the right bracket 5, a pin shaft is arranged on one side of the horizontal bracket, and the right end of the horizontal rod 6 is lapped on the horizontal bracket 8. The height of the screw hole of the left bracket 4 and the height of the horizontal bracket 8 below the right bracket 5 just enable the horizontal rod 6 to be kept horizontal, and the gap between the horizontal rod and the fixed pulley 2 is smaller than the diameter of the steel wire rope 3.

The right bracket 5 is a portal frame, and the left side of the portal frame is provided with a rotating fulcrum of the driving plate.

Therefore, when the steel wire rope is about to jump the groove, the horizontal rod 6 can block the steel wire rope to prevent the steel wire rope from jumping the groove.

In addition, the embodiment can also give an alarm in time when the steel wire rope jumps. The concrete structure is as follows: as shown in fig. 2, the micro switch 10 is of a non-automatic reset type, is connected to a crane safety loop, and is fixed on the trolley frame 1 on the side of the right bracket 5 with the pin shaft through a switch bracket 9, and the upper surface of the contact of the micro switch 10 is level with the upper surface of the right end of the horizontal rod 6; the middle of the drive plate 7 is provided with a screw hole, the diameter of the screw hole is slightly larger than that of the pin shaft, the screw hole is connected with the right bracket 5 through the pin shaft on one side of the right bracket 5, the drive plate 7 can rotate around the pin shaft, and the lower surfaces on two sides of the drive plate 7 are respectively contacted with the upper surface of a contact of the microswitch 7 and the upper surface of the right end of the horizontal rod 6 due to the height of the pin.

As shown in fig. 2, a driving plate 7 is rotatably provided on the upper side of the horizontal bar 6; the microswitch 10 is arranged on the lower side of the driving plate 7; the micro switch 10 and the horizontal rod 6 are respectively positioned at the left side and the right side of the rotation fulcrum of the driving plate. This embodiment is through designing into drive plate 7 and right branch frame 5 and can rotate around the round pin axle, through this kind of design similar to the seesaw, can be fast and effectual sense whether wire rope has the phenomenon of jumping the groove. In addition, during the actual use process, the sensitivity of the micro switch 10 can be adjusted by controlling the clearance between the horizontal rod 6 and the fixed pulley 2.

Specifically, the gap can be reduced by lowering the position of the horizontal rod 6, and the corresponding position of the micro switch 10 is also lowered correspondingly, so that the micro switch 10 can be triggered when the horizontal rod 6 is tilted to a smaller extent, and the sensitivity of the micro switch 10 is increased.

In addition, in practical use, the horizontal rod 6 is connected with the trolley frame 1 through the spring 11, so that the spring 11 is in a stretched state in a normal state, and the spring 11 can prevent the right end of the horizontal rod 6 from being upwarped due to vibration of the crane, and false alarm is avoided.

Example two: the present embodiment is basically the same as the first embodiment, and the difference is: the position of the microswitch 10 may be different. Specifically, in the first embodiment, the micro switch 10 is located at the lower end of the horizontal rod 6. In this embodiment, the micro switch 10 is located at the upper end of the horizontal rod 6. But the inductive contacts of the microswitch 10 are still arranged towards the horizontal bar 6. Therefore, when one end of the horizontal rod 6 is tilted, the microswitch 10 can be triggered.

The working principle is as follows:

when the steel wire rope 3 jumps, because the clearance between the horizon bar 6 and the fixed pulley 2 is less than the diameter of the steel wire rope 3, and the left end of the horizon bar 6 can rotate around the pin shaft, at this moment, the steel wire rope 3 can jack up the horizon bar 6 to tilt up the right end thereof, thereby one side of the drive plate 7 tilts up, because the drive plate 7 can rotate around the pin shaft, the other side of the drive plate 7 presses down at this moment, the micro switch 10 is triggered, because the micro switch 10 line is connected into the safety loop of the crane, the crane stops running at this moment, and the warning information is sent out for the driver. The micro switch 10 adopts a non-automatic reset type, and needs to be reset manually after action.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a wire rope prevents jumping groove alarm device which characterized in that: comprises that

The horizontal rod (6) is arranged on the upper side of the fixed pulley (2) and used for preventing the steel wire rope (3) from jumping out of the groove;

the microswitch (10) can move relative to the horizontal rod (6) between the microswitch (10) and the horizontal rod; the microswitch (10) is used for being connected to a safety loop of the crane, and the microswitch (10) is triggered after the horizontal rod (6) moves to realize the alarm aiming at the groove jumping phenomenon.

2. The steel wire rope groove-skipping prevention alarm device according to claim 1, wherein: a driving plate (7) is rotatably arranged on the upper side of the horizontal rod (6); the micro switch (10) is arranged on the lower side of the driving plate (7); the micro switch (10) and the horizontal rod (6) are respectively positioned at the left side and the right side of the rotating fulcrum of the driving plate (7).

3. The steel wire rope groove-skipping prevention alarm device according to claim 2, characterized in that: the right side of the horizontal rod (6) is provided with a right support (5), and the driving plate (7) is hinged to the right support.

4. A wire rope groove jump prevention warning device according to claim 3, wherein: the right support (5) is a portal frame, and a rotating fulcrum of the driving plate (7) is arranged on the left side of the portal frame.

5. A wire rope groove jump prevention warning device according to claim 3, wherein: the left side of the horizontal rod (6) is hinged with a left support (4).

6. The steel wire rope groove-skipping prevention alarm device according to claim 1, wherein: and a switch bracket (9) connected with the trolley frame (1) is arranged on one side of the microswitch (10).

7. The steel wire rope groove-skipping prevention alarm device according to claim 1, wherein: the lower end of the right side of the horizontal rod (6) is connected with a spring (11), and the spring (11) is in a stretched state in a normal state.

8. The steel wire rope groove-skipping prevention alarm device according to claim 6, wherein: the lower side of the right end of the horizontal rod (6) is abutted against a horizontal bracket (8).

9. A crane trolley, characterized in that: comprising a wire rope jump prevention warning device according to any one of claims 1 to 8; the trolley is characterized by further comprising a trolley frame (1), a fixed pulley (2) used for bearing the steel wire rope (3) is arranged on the trolley frame (1), a horizontal rod (6) is arranged at the upper end of the fixed pulley (2), and the size of a gap between the horizontal rod (6) and the fixed pulley (2) is smaller than the diameter size of the steel wire rope (3).

10. A crane trolley according to claim 9, characterised in that: the upper side of the trolley frame (1) is connected with a spring (11); the upper side of the trolley frame (1) is connected with a switch bracket (9).