CN111675109A - Steel wire rope groove-jumping-preventing alarm device and crane trolley - Google Patents
Steel wire rope groove-jumping-preventing alarm device and crane trolley Download PDFInfo
- Publication number
- CN111675109A CN111675109A CN202010688004.9A CN202010688004A CN111675109A CN 111675109 A CN111675109 A CN 111675109A CN 202010688004 A CN202010688004 A CN 202010688004A CN 111675109 A CN111675109 A CN 111675109A
- Authority
- CN
- China
- Prior art keywords
- horizontal rod
- wire rope
- steel wire
- groove
- jumping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 46
- 239000010959 steel Substances 0.000 title claims abstract description 46
- 230000009191 jumping Effects 0.000 claims abstract description 24
- 230000001960 triggered effect Effects 0.000 claims description 5
- 230000002265 prevention Effects 0.000 claims 8
- 238000000034 method Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
- B66C15/06—Arrangements or use of warning devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Control And Safety Of Cranes (AREA)
- Jib Cranes (AREA)
Abstract
The invention discloses a steel wire rope groove-jumping-preventing alarm device and a crane trolley comprising the same, and belongs to the technical field of cranes. The invention aims to provide a technical scheme for solving the problem of how to realize alarming when a groove jumping phenomenon occurs, and the technical scheme is applied to a crane trolley so as to reduce the occurrence of safety accidents. The purpose of the invention is realized as follows: 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. According to the invention, the horizontal rod is arranged at the upper end of the movable pulley, and the purpose of preventing groove jumping is realized by utilizing the horizontal rod. 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
Technical Field
The invention belongs to the technical field of cranes, and particularly relates to a steel wire rope groove-jumping-preventing alarm device and a crane trolley comprising the same.
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.
Disclosure of Invention
The invention aims to provide a technical scheme for solving the problem of how to realize alarming when a groove jumping phenomenon occurs, and the technical scheme is applied to a crane trolley so as to reduce the occurrence of safety accidents.
The purpose of the invention is realized as follows: 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 invention has the outstanding and beneficial technical effects that:
1. according to the invention, the horizontal rod is arranged at the upper end of the movable pulley, and the purpose of preventing groove jumping is realized by utilizing the horizontal rod. 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 lower end of the horizontal rod is provided with the spring, and the horizontal rod is applied with a downward force by the pulling force of the spring, so that the vibration of the horizontal rod can be reduced, the phenomenon that the horizontal rod is lifted due to vibration in the running process of the crane, the misoperation of a microswitch is caused, the crane stops running, and the reliability is enhanced.
3. According to the invention, the microswitch circuit is connected to the crane safety circuit, so that the crane can automatically stop running under the condition that the steel wire rope jumps, a driver is reminded to check the steel wire rope and the pulley, and the normal running of the crane is ensured.
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 is further described below in terms of specific examples.
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 embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
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).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010688004.9A CN111675109A (en) | 2020-07-16 | 2020-07-16 | Steel wire rope groove-jumping-preventing alarm device and crane trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010688004.9A CN111675109A (en) | 2020-07-16 | 2020-07-16 | Steel wire rope groove-jumping-preventing alarm device and crane trolley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111675109A true CN111675109A (en) | 2020-09-18 |
Family
ID=72437903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010688004.9A Pending CN111675109A (en) | 2020-07-16 | 2020-07-16 | Steel wire rope groove-jumping-preventing alarm device and crane trolley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111675109A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4212006A (en) * | 1978-01-26 | 1980-07-08 | B & A Engineering Company Ltd. | Crane load alarm with compensation for direction of rope movement |
| CN203959721U (en) * | 2014-05-27 | 2014-11-26 | 武汉钢铁(集团)公司 | For the device of steel wire rope jump prevention forewarn system |
| CN204281165U (en) * | 2014-11-17 | 2015-04-22 | 珠海三一港口机械有限公司 | A kind of steel cable slot disengaging detecting device and span winch |
| CN210236948U (en) * | 2019-03-12 | 2020-04-03 | 苏州硕力重工有限公司 | Height-adjustable support for crane |
| CN212245960U (en) * | 2020-07-16 | 2020-12-29 | 杭州市特种设备检测研究院 | Steel wire rope groove-jumping-preventing alarm device and crane trolley |
-
2020
- 2020-07-16 CN CN202010688004.9A patent/CN111675109A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4212006A (en) * | 1978-01-26 | 1980-07-08 | B & A Engineering Company Ltd. | Crane load alarm with compensation for direction of rope movement |
| CN203959721U (en) * | 2014-05-27 | 2014-11-26 | 武汉钢铁(集团)公司 | For the device of steel wire rope jump prevention forewarn system |
| CN204281165U (en) * | 2014-11-17 | 2015-04-22 | 珠海三一港口机械有限公司 | A kind of steel cable slot disengaging detecting device and span winch |
| CN210236948U (en) * | 2019-03-12 | 2020-04-03 | 苏州硕力重工有限公司 | Height-adjustable support for crane |
| CN212245960U (en) * | 2020-07-16 | 2020-12-29 | 杭州市特种设备检测研究院 | Steel wire rope groove-jumping-preventing alarm device and crane trolley |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102583202B (en) | Lifting chain loosening or breaking recognition device and engineering machinery using same | |
| CN212245960U (en) | Steel wire rope groove-jumping-preventing alarm device and crane trolley | |
| CN117486091A (en) | Rope breakage protection device of crane | |
| US4499971A (en) | Material handling vehicle having improved chain monitoring | |
| CN111675109A (en) | Steel wire rope groove-jumping-preventing alarm device and crane trolley | |
| CN210944578U (en) | Bridge crane wire rope anticipatory alarm device | |
| CN206971859U (en) | A kind of locking, the anti-fall device of multi-storied garage lifting chain | |
| CN211143909U (en) | Steel wire rope tightness detection device and stereo garage with same | |
| KR101839208B1 (en) | Safety braking apparatus of fire hose dryer | |
| CN212769275U (en) | Detection and safety device for tension of hoisting rope | |
| CN210976793U (en) | Anti-loosing and anti-rope-breaking alarm device for dead weight drop type parking equipment | |
| CN210528164U (en) | Safety protection device for cable chain lifting system | |
| CN102320533A (en) | Dual-loop controlled over winding warning and limiting device | |
| CN202529672U (en) | Overload protection device | |
| CN212050230U (en) | Simple anti-collision crown block device | |
| KR101941002B1 (en) | Crane | |
| CN209098064U (en) | Tower crane with jacking stock inclination warning function | |
| CN210764043U (en) | Pulley yoke of tower crane | |
| CN218997581U (en) | Access mechanism of power supply towing rope on intelligent inspection device | |
| CN217808407U (en) | Steel wire rope fracture sensor of power catwalk machine | |
| JPH0673071U (en) | Wire rope inspection equipment | |
| CN114348927B (en) | Overweight detection method | |
| CN215439355U (en) | Oblique-pulling-preventing oblique-lifting device for hoisting equipment | |
| CN109264616B (en) | Electric gantry lifter capable of preventing overturning and working method thereof | |
| CN115215227B (en) | Anti-drop structure of single arm of force promotes press |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |