CN114940446A - Detection device for steel wire rope of tower crane during lifting - Google Patents
Detection device for steel wire rope of tower crane during lifting Download PDFInfo
- Publication number
- CN114940446A CN114940446A CN202210457232.4A CN202210457232A CN114940446A CN 114940446 A CN114940446 A CN 114940446A CN 202210457232 A CN202210457232 A CN 202210457232A CN 114940446 A CN114940446 A CN 114940446A
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- sliding
- rod
- wire rope
- steel wire
- electric push
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 107
- 239000010959 steel Substances 0.000 title claims abstract description 107
- 238000001514 detection method Methods 0.000 title claims abstract description 17
- 230000006698 induction Effects 0.000 claims abstract description 29
- 238000007790 scraping Methods 0.000 claims description 10
- 230000004044 response Effects 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 10
- 230000008054 signal transmission Effects 0.000 abstract description 6
- 238000004804 winding Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000005056 compaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/16—Rigid blades, e.g. scrapers; Flexible blades, e.g. wipers
- B08B1/165—Scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention belongs to the technical field of cranes, and particularly relates to a detection device for a steel wire rope lifted by a tower crane, which is arranged on a cross beam of the tower crane. If signal transmission between the third induction sheet and the second motor breaks down in a specific using process, then the third induction sheet transmits signals to the second motor, the second motor controls the electric push rod to work, so that the electric push rod drives the sliding frame to move upwards, when the signals are not transmitted, the bottom frame and the sliding frame can clamp the steel wire rope all the time, the steel wire rope is driven by the steel wire rope to move, at the moment, the steel wire rope can slide towards one side away from the cab relative to the sliding rod, after the pull ropes on the winding wheel are all pulled out, the steel wire rope is tightened, the second induction sheet is extruded by the pressure plate on the sliding rod, the electric push rod is controlled to work by the second induction sheet, meanwhile, the steel wire rope directly pulls the limiting rod through the sliding rod and the sliding sleeve to remove the limitation on the electric push rod, so that the sliding frame moves upwards relative to the bottom frame, and the pressing on the steel wire rope is removed.
Description
Technical Field
The invention belongs to the technical field of cranes, and particularly relates to a steel wire rope lifting detection device for a tower crane.
Background
When the induction sheet of the CK.W magnetic memory type steel wire rope AI weak magnetic detection technology is actually used, the induction sheet is arranged on the side close to the steel wire rope, and the steel wire rope is greatly influenced by heavy objects and wind and often swings due to the high-altitude operation of the crane; when the steel wire rope swings or jumps due to tight vibration, the steel wire rope can collide with the induction sheet, and the induction sheet used by the crane is expensive, so that the use cost is increased invisibly.
In addition, although the steel wire rope is convenient for the CK.W magnetic memory type steel wire rope AI weak magnetic detection technology to identify the steel wire rope passing through the magnetic block, when the steel wire rope works, if magnetic impurities are adhered on the steel wire rope, the magnetism of the steel wire rope is influenced, and the judgment of the technology is caused.
The invention aims at improving the CK.W magnetic memory type steel wire rope AI weak magnetism detection technology to solve the problems.
Disclosure of Invention
In order to achieve the purpose, the invention adopts the following technical scheme:
a detection device for a tower crane to lift a steel wire rope is arranged on a tower crane cross beam; the detection device comprises guide rods, an underframe, an electric push rod, a sliding frame, a first spring, a second spring, a fixed support, a limiting rod, a first sliding block, a second sliding block, a third induction sheet and a scraping sheet, wherein the two guide rods are symmetrically and fixedly arranged on a cross beam; the sliding frame is arranged on the upper side of the underframe in a vertically sliding manner, one side of the sliding frame, which is far away from the cockpit, is provided with a U-shaped upper pressing groove, and the upper pressing groove is matched with the lower pressing groove; a first sliding block is slidably arranged on one side, close to the cockpit, of the sliding frame; third induction sheets are arranged on the first sliding block and the second sliding block; the upper side of the underframe is provided with an electric push rod through a fixed support, the fixed end of the electric push rod is fixedly connected with the fixed support, and the telescopic end of the electric push rod is fixedly connected with the sliding frame; a second spring is arranged between the sliding frame and the fixed support, and a first spring is arranged between the electric push rod and the fixed support; the fixed support is provided with a limiting rod which can fixedly support the fixed end of the electric push rod to slide relatively.
And the first sliding block and the second sliding block are fixedly provided with scraping pieces.
Preferably, a first motor is fixedly mounted on one side, close to the cab, of the beam, a steel rope pulley is fixedly mounted on an output shaft of the first motor, a steel rope is wound on the steel rope pulley, and the outer end of the steel rope is fixedly connected with the limiting rod after being guided by the guide wheel.
And a third spring is arranged between the limiting rod and the fixed support, is a compression spring and has pre-pressure.
Preferably, one end of the steel rope close to the limiting rod is provided with a sensing module, and the steel rope is cut into two parts at the position where the sensing module is arranged.
The induction module comprises a fourth spring, a sliding sleeve, a sliding rod and a second induction sheet, wherein the sliding rod is slidably arranged in the sliding sleeve, and the fourth spring is arranged between one end of the sliding rod and the inner end face of the sliding sleeve; the other end of the sliding rod penetrates out of the sliding sleeve; the sliding sleeve and the sliding rod are respectively connected with the two cut ends of the steel rope; a second induction sheet is fixedly arranged on the inner end face of one end of the sliding sleeve, which is far away from the limiting rod; and a pressure plate is fixedly arranged on the sliding rod and matched with the second induction sheet.
As a preferred scheme, an L-shaped plate is fixedly mounted on one side, away from the cockpit, of the bottom frame, and a first sensing piece is fixedly mounted on the L-shaped plate.
Preferably, the fixed end of the electric push rod is provided with a second motor for controlling the electric push rod to work or not.
As the preferred scheme, the fixed end of the electric push rod is provided with a limiting hole matched with the limiting rod.
As a preferred scheme, two mounting sliding rods are symmetrically and slidably mounted on two sides of the bottom frame, and a sixth spring is mounted between each mounting sliding rod and the bottom frame; and each installation slide bar is provided with an extension inner rod in a sliding manner, and a fifth spring is arranged between the extension inner rod and the corresponding installation slide bar.
The end of each telescopic inner rod, which is far away from the corresponding mounting slide rod, is fixedly provided with a guide ring, and the guide rings are connected with the guide rods in a sliding manner.
As a preferred scheme, a steel wire rope avoidance opening for placing a steel wire is formed in the bottom frame.
As preferred scheme, fixed mounting has L type connecting plate on the first slider, and fixed mounting has the driving plate on the second slider, connects through the telescopic connecting rod between driving plate and the L type connecting plate.
As a preferred scheme, a screw is rotatably mounted on the bottom frame, a third motor is fixedly mounted on the bottom frame, and an output shaft of the third motor is fixedly connected with the screw; the screw rod is in threaded fit connection with the second sliding block.
Compared with the prior art, the invention has the advantages that:
1. first response piece is the photoelectric sensing piece, and when the relative crossbeam of chassis slided, when first response piece was about to touch walking platform, first response piece with signal transmission to first motor and electric putter on, electric putter's flexible end drives the carriage and upwards slides, and first motor passes through rope sheave, steel cable, gag lever post, electric putter and the relative crossbeam of carriage pulling chassis and slides to being close to cockpit one side.
2. In the using process, after the third induction sheet detects the change of a magnetic field on the steel wire rope, the sliding frame is controlled to move downwards through the electric push rod, so that the lower pressing groove on the bottom frame and the upper pressing groove on the sliding frame press the steel wire rope, the steel wire rope drives the bottom frame to move together, in addition, the scraping sheets on the first sliding block and the second sliding block contact the steel wire rope, and the third induction sheet is close to the steel wire rope but does not contact the steel wire rope; the first sliding block and the second sliding block slide on the sliding frame and the bottom frame in a reciprocating mode, and sundries on the steel wire rope are scraped in a reciprocating mode through the scraping blade in the sliding process; meanwhile, the third induction sheet detects the steel wire rope in a reciprocating mode so as to determine whether the magnetic field of the steel wire rope changes or not. If the change is true, the tower crane is controlled to stop working; and if the magnetic field is not abnormal, controlling the electric push rod to enable the sliding frame to return to the initial state.
3. The invention can play a role in buffering the shaking of the underframe along with the steel wire rope through the designed installation slide rod, the telescopic inner rod, the fifth spring and the sixth spring.
4. If signal transmission between the third induction sheet and the second motor breaks down in a specific using process, then the third induction sheet transmits signals to the second motor, the second motor controls the electric push rod to work, so that the electric push rod drives the sliding frame to move upwards, when the signals are not transmitted, the bottom frame and the sliding frame can clamp the steel wire rope all the time, the steel wire rope is driven by the steel wire rope to move, the steel wire rope can slide towards one side far away from the cab relative to the sliding rod at the moment, in the process, after the pull ropes on the winding wheel are all pulled out, the steel wire rope is tightened, the pressure plate on the sliding rod extrudes the second induction sheet, the electric push rod is controlled to work by the second induction sheet, meanwhile, the steel wire rope directly pulls the limiting rod through the sliding rod and the sliding sleeve to remove the limitation on the electric push rod, so that the sliding frame moves upwards relative to the bottom frame, and the pressing on the steel wire rope is removed.
Drawings
Fig. 1 is an external view of an entire part.
Fig. 2 is a schematic view of the detection device installation.
Fig. 3 is a schematic of the steel cord installation.
Fig. 4 is a schematic view of the connection between the steel cable and the stop lever.
Fig. 5 is a schematic structural diagram of a sensing module.
Fig. 6 is a schematic view of the chassis mounting.
Fig. 7 is a schematic view of the first and second slides mounted.
Fig. 8 is a first block mounting schematic.
Fig. 9 is a schematic view of the connection of the first slider and the second slider.
Fig. 10 is a schematic view of a first slider structure.
Number designation in the figure: 1. a balancing weight; 2. a cross beam; 3. a cockpit; 4. a first motor; 5. a detection device; 6. a guide bar; 7. a wire rope; 8. a steel cord; 9. a steel sheave; 10. a chassis; 11. an electric push rod; 12. a carriage; 13. an L-shaped plate; 14. a first sensing sheet; 15. fixing and supporting; 16. a first spring; 17. a second spring; 18. a limiting rod; 19. a second motor; 20. a third spring; 21. a platen; 22. a guide wheel; 23. a sensing module; 24. a fourth spring; 25. a sliding sleeve; 26. a slide bar; 27. a second sensing piece; 28. a limiting hole; 29. a sixth spring; 30. a telescopic inner rod; 31. installing a sliding rod; 32. a steel wire rope avoidance opening; 33. a guide ring; 34. a fifth spring; 35. a first slider; 36. a second slider; 37. a screw; 38. a third motor; 39. a connecting rod; 40. an upper compaction groove; 41. an L-shaped connecting plate; 42. a drive plate; 43. a third induction sheet; 44. scraping a blade; 45. and a lower pressing groove.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples or figures are illustrative of the present invention and are not intended to limit the scope of the present invention.
Unless otherwise specified, in the present invention, if there are orientations or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientations or positional relationships shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must be of a particular length, orientation, configuration and operation in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art by referring to the drawings as appropriate.
Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model provides a be used for tower crane to lift off 7 detection device 5 of wire rope, as shown in fig. 1, 2, have balancing weight 1, crossbeam 2, cockpit 3 on the tower crane, install detection device 5 on the crossbeam 2.
As shown in fig. 3 and 4, the detecting device 5 includes guide rods 6, a bottom frame 10, an electric push rod 11, a sliding frame 12, a first spring 16, a second spring 17, a fixed support 15, a limiting rod 18, a first slider 35, a second slider 36, a third sensing piece 43, and a wiper blade 44, wherein two guide rods 6 are symmetrically and fixedly mounted on the cross beam 2, the bottom frame 10 is slidably mounted on the two guide rods 6, as shown in fig. 6, a U-shaped lower pressing groove 45 is formed in one side of the bottom frame 10 away from the cockpit 3, and a second slider 36 is slidably mounted on one side of the bottom frame 10 close to the cockpit 3; the sliding frame 12 is arranged on the upper side of the underframe 10 in a sliding way up and down, as shown in fig. 8, one side of the sliding frame 12 away from the cab 3 is provided with a U-shaped upper pressing groove 40, as shown in fig. 7, and the upper pressing groove 40 is matched with a lower pressing groove 45; a first slide block 35 is arranged on one side of the sliding frame 12 close to the cab 3 in a sliding manner; as shown in fig. 10, a third sensing piece 43 is mounted on each of the first slider 35 and the second slider 36; an electric push rod 11 is mounted on the upper side of the underframe 10 through a fixed support 15, the fixed end of the electric push rod 11 is fixedly connected with the fixed support 15, and the telescopic end of the electric push rod 11 is fixedly connected with the sliding frame 12; a second spring 17 is arranged between the sliding frame 12 and the fixed support 15, and a first spring 16 is arranged between the electric push rod 11 and the fixed support 15; and a limiting rod 18 capable of sliding relative to the fixed support 15 to the fixed end of the electric push rod 11 is slidably mounted on the fixed support 15.
As shown in fig. 10, the first sliding block 35 and the second sliding block 36 are fixedly mounted with a wiper blade 44.
As shown in fig. 1, 2 and 3, a first motor 4 is fixedly mounted on one side of the beam 2 close to the cockpit 3, a steel rope wheel 9 is fixedly mounted on an output shaft of the first motor 4, a steel rope 8 is wound on the steel rope wheel 9, and the outer end of the steel rope 8 is fixedly connected with a limit rod 18 after being guided by a guide wheel 22. The first motor 4 works to drive the steel rope wheel 9 to rotate, the steel rope wheel 9 is wound on the steel rope 8 in a rotating mode, and the steel rope 8 pulls the underframe 10 to slide towards one side close to the cab 3 relative to the cross beam 2 through the limiting rod 18, the electric push rod 11 and the sliding frame 12.
As shown in fig. 5, a third spring 20 is installed between the limiting rod 18 and the fixed support 15, and the third spring 20 is a compression spring and has a pre-pressure. The third spring 20 acts to return the stop lever 18.
Under the normal condition of the invention, the fixed end of the electric push rod 11 is limited by the limiting rod 18; when the telescopic end of the electric push rod 11 drives the sliding frame 12 to move downwards relative to the underframe 10, the fixed end of the electric push rod 11 is limited by the limiting rod 18, so that the second spring 17 is stretched; after the limit of the electric push rod 11 is released by the limit rod 18, the elastic strength of the first spring 16 is smaller than that of the second spring 17, so that the electric push rod 11 can integrally slide upwards under the action of the second spring 17, and the first spring 16 is stretched; after the second spring 17 is restored to be smaller than the elastic force of the first spring 16 at this time, the first spring 16 is restored to a certain degree, the electric push rod 11 is controlled to shorten and reset after the fault is relieved, and finally the electric push rod 11 is restored to the initial state, and the limiting rod 18 is reset under the action of the third spring 20 and is inserted into the limiting hole 28 of the electric push rod 11 again to limit the electric push rod 11 again.
As shown in fig. 5, a sensing module 23 is installed at one end of the steel cable 8 near the limiting rod 18, and the steel cable 8 is cut into two parts at the position where the sensing module 23 is installed.
As shown in fig. 5, the sensing module 23 includes a fourth spring 24, a sliding sleeve 25, a sliding rod 26, and a second sensing piece 27, wherein the sliding rod 26 is slidably mounted in the sliding sleeve 25, and the fourth spring 24 is mounted between one end of the sliding rod 26 and an inner end surface of the sliding sleeve 25; the other end of the sliding rod 26 penetrates through the sliding sleeve 25; the sliding sleeve 25 and the sliding rod 26 are respectively connected with the two cut ends of the steel rope 8; a second induction sheet 27 is fixedly arranged on the inner end surface of one end of the sliding sleeve 25 far away from the limiting rod 18; a pressure plate 21 is fixedly mounted on the sliding rod 26, and the pressure plate 21 is matched with a second sensing piece 27.
As shown in fig. 4, an L-shaped plate 13 is fixedly mounted on one side of the chassis 10 away from the cockpit 3, and a first sensing piece 14 is fixedly mounted on the L-shaped plate 13. First response piece 14 is the photoelectric sensing piece, when chassis 10 slides relative crossbeam 2, if the walking platform is close to with detection device 5 when very near, when the walking platform is soon being touch to first response piece 14, first response piece 14 with signal transmission to first motor 4 and electric putter 11 on, electric putter 11's flexible end drives carriage 12 and upwards slides, first motor 4 passes through rope sheave 9, the steel cable 8, the gag lever post 18, electric putter 11 and carriage 12 pulling chassis 10 slide to being close to cockpit 3 one side relative crossbeam 2.
As shown in fig. 5, a second motor 19 for controlling the operation of the electric putter 11 is installed at the fixed end of the electric putter 11.
As shown in fig. 5, the fixed end of the electric push rod 11 is provided with a limit hole 28 matched with the limit rod 18.
As shown in fig. 6, two mounting sliding rods 31 are symmetrically and slidably mounted on both sides of the bottom frame 10, and a sixth spring 29 is mounted between the mounting sliding rods 31 and the bottom frame 10; each mounting slide bar 31 is slidably mounted with a telescopic inner rod 30, and a fifth spring 34 is mounted between the telescopic inner rod 30 and the corresponding mounting slide bar 31.
As shown in fig. 6, a guide ring 33 is fixedly installed at one end of each of the two telescopic inner rods 30 far from the installation slide rod 31, and the guide ring 33 is slidably connected with the guide rod 6.
The invention can play a role in buffering the underframe 10 when swinging along with the steel wire rope 7 through the designed installation slide rod 31, the telescopic inner rod 30, the fifth spring 34 and the sixth spring 29.
As shown in fig. 6, a steel cable evasion opening for putting steel cables is formed on the chassis 10.
The positional relationship between the carriage 12 and the base frame 10 in the present invention is classified into the following three types:
first, when the cable 7 is to be placed in the inspection device 5, the spacing between the carriage 12 and the chassis 10 is maximized, which ensures that the cable 7 is inserted between the carriage 12 and the chassis 10 from the cable exit.
Secondly, after the cable 7 is inserted between the carriage 12 and the base frame 10, the carriage 12 is controlled to move downwards relative to the base frame 10, so that a distance exists between the carriage 12 and the base frame 10, and the distance can ensure that the cable 7 cannot slide out from the space between the carriage 12 and the base frame 10.
Thirdly, the steel wire rope 7 is completely wrapped and compressed by the sliding frame 12 and the base frame 10, and an upper compression groove 40 of the sliding frame 12 is attached to a lower compression groove 45 of the base frame 10.
As shown in fig. 9, an L-shaped connecting plate 41 is fixedly mounted on the first slider 35, a driving plate 42 is fixedly mounted on the second slider 36, and the driving plate 42 is connected with the L-shaped connecting plate 41 through a telescopic connecting rod 39.
As shown in fig. 7, a screw 37 is rotatably mounted on the chassis 10, a third motor 38 is fixedly mounted on the chassis 10, and an output shaft of the third motor 38 is fixedly connected with the screw 37; the screw 37 is connected with the second slide block 36 in a threaded fit manner.
The third motor 38 drives the screw rod 37 to rotate when working, the screw rod 37 rotates the second sliding block 36 to slide, and the second sliding block 36 drives the first sliding block 35 to slide through the transmission plate 42, the connecting rod 39 and the L-shaped connecting plate 41; the link 39 is telescopic to ensure that the connection between the second slider 36 and the first slider 35 is not broken during the up and down sliding movement of the carriage 12 relative to the base frame 10.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
The implementation mode is as follows: when the crane designed by the invention is used, in an initial state, the limiting rod 18 limits the fixed end of the electric push rod 11, and when the crane is used, the sliding frame 12 is controlled to move upwards relative to the base frame 10 through the electric push rod 11, and the steel wire rope 7 is placed between the sliding frame 12 and the base frame 10 from the steel wire rope avoidance opening 32; the carriage 12 is then controlled by the electric tow bar to move downwards relative to the base frame 10, so that there is also a distance between the carriage 12 and the base frame 10, which ensures that the cable 7 does not slip out from between the carriage 12 and the base frame 10.
In the using process, after the third sensing piece 43 detects the change of the magnetic field on the steel wire rope 7, the sliding frame 12 is controlled to move downwards through the electric push rod 11, so that the lower pressing groove 45 on the base frame 10 and the upper pressing groove 40 on the sliding frame 12 press the steel wire rope 7, the steel wire rope 7 drives the base frame 10 to move together, in this state, the scraping blades 44 on the first sliding block 35 and the second sliding block 36 contact the steel wire rope 7, and the third sensing piece 43 is close to the steel wire rope 7 but does not contact the steel wire rope 7; the first slide block 35 and the second slide block 36 slide on the sliding frame 12 and the underframe 10 in a reciprocating way, and the first slide block 35 and the second slide block 36 play a reciprocating scraping role on sundries on the steel wire rope 7 through the scraping blade 44 in the sliding process; meanwhile, the third sensing piece 43 detects the reciprocating motion of the steel wire rope 7 to confirm whether the magnetic field of the steel wire rope 7 changes. If the change is true, the tower crane is controlled to stop working; if the magnetic field is not abnormal, the electric putter 11 is controlled to return the carriage 12 to the initial state.
In a specific use process, if signal transmission between the third sensing piece 43 and the second motor 19 fails, when the third sensing piece 43 transmits a signal to the second motor 19, the second motor 19 controls the electric push rod 11 to work, so that in a process that the electric push rod 11 drives the sliding frame 12 to move upwards, the signal transmission cannot be carried out, the bottom frame 10 and the sliding frame 12 clamp the steel wire rope 7 all the time, the steel wire rope 7 is driven by the steel wire rope 7 to move, the steel wire rope slides to the side away from the cab 3 relative to the sliding rod 26 at the moment, in a process that the pull rope on the winding wheel is pulled out completely, the steel wire rope 7 is tightened, the pressure plate 21 on the sliding rod 26 extrudes the second sensing piece 27, the electric push rod 11 is controlled to work by the second sensing piece 27, and meanwhile, the steel wire rope 8 directly pulls the limiting rod 18 through the sliding rod 26 and the sliding sleeve 25 to release the limit of the electric push rod 11, so that the sliding frame 12 moves upwards relative to the bottom frame 10, the wire rope 7 is released from being pressed.
Claims (10)
1. The utility model provides a be used for tower crane to lift off wire rope detection device which characterized in that: the detection device is arranged on a tower crane cross beam;
the detection device comprises guide rods, an underframe, an electric push rod, a sliding frame, a first spring, a second spring, a fixed support, a limiting rod, a first sliding block, a second sliding block, a third induction sheet and a scraping sheet, wherein the two guide rods are symmetrically and fixedly arranged on a cross beam; the sliding frame is arranged on the upper side of the underframe in a vertically sliding manner, one side of the sliding frame, which is far away from the cockpit, is provided with a U-shaped upper pressing groove, and the upper pressing groove is matched with the lower pressing groove; a first sliding block is slidably arranged on one side, close to the cockpit, of the sliding frame; third induction sheets are arranged on the first sliding block and the second sliding block; an electric push rod is installed on the upper side of the bottom frame through a fixed support, the fixed end of the electric push rod is fixedly connected with the fixed support, and the telescopic end of the electric push rod is fixedly connected with the sliding frame; a second spring is arranged between the sliding frame and the fixed support, and a first spring is arranged between the electric push rod and the fixed support; a limiting rod capable of sliding relative to the fixed end of the electric push rod is slidably mounted on the fixed support;
and the first sliding block and the second sliding block are fixedly provided with scraping pieces.
2. The device for detecting the lifting-off steel wire rope of the tower crane according to claim 1, characterized in that: a first motor is fixedly mounted on one side, close to the cockpit, of the cross beam, a steel rope pulley is fixedly mounted on an output shaft of the first motor, a steel rope is wound on the steel rope pulley, and the outer end of the steel rope is fixedly connected with a limiting rod after being guided by a guide wheel;
and a third spring is arranged between the limiting rod and the fixed support, is a compression spring and has pre-pressure.
3. The device for detecting the lifting-off steel wire rope of the tower crane according to claim 2, characterized in that: one end of the steel rope close to the limiting rod is provided with a sensing module, and the steel rope is cut into two parts at the position where the sensing module is arranged;
the induction module comprises a fourth spring, a sliding sleeve, a sliding rod and a second induction sheet, wherein the sliding rod is slidably arranged in the sliding sleeve, and the fourth spring is arranged between one end of the sliding rod and the inner end face of the sliding sleeve; the other end of the sliding rod penetrates out of the sliding sleeve; the sliding sleeve and the sliding rod are respectively connected with the two cut ends of the steel rope; a second induction sheet is fixedly arranged on the inner end face of one end of the sliding sleeve, which is far away from the limiting rod; and a pressure plate is fixedly arranged on the sliding rod and matched with the second induction sheet.
4. The device for detecting the lifting-off steel wire rope of the tower crane according to claim 1, characterized in that: one side that the driver's cabin was kept away from to the chassis is fixed mounting with the L template, and fixed mounting has first response piece on the L template.
5. The device for detecting the lifting-off steel wire rope of the tower crane according to claim 1, characterized in that: and a second motor for controlling the electric push rod to work or not is arranged at the fixed end of the electric push rod.
6. The device for detecting the lifting-off steel wire rope of the tower crane according to claim 1, characterized in that: the fixed end of the electric push rod is provided with a limiting hole matched with the limiting rod.
7. The device for detecting the lifting-off steel wire rope of the tower crane according to claim 1, characterized in that: two mounting sliding rods are symmetrically installed on two sides of the bottom frame in a sliding mode, and a sixth spring is installed between each mounting sliding rod and the bottom frame; each mounting slide bar is provided with a telescopic inner rod in a sliding manner, and a fifth spring is arranged between each telescopic inner rod and the corresponding mounting slide bar;
the end of each telescopic inner rod, which is far away from the corresponding mounting slide rod, is fixedly provided with a guide ring, and the guide rings are connected with the guide rods in a sliding manner.
8. The device for detecting the lifting-off steel wire rope of the tower crane according to claim 1, characterized in that: and a steel wire rope avoidance opening for placing a steel wire is formed in the bottom frame.
9. The device for detecting the lifting-off steel wire rope of the tower crane according to claim 1, characterized in that: the first slider is fixedly provided with an L-shaped connecting plate, the second slider is fixedly provided with a transmission plate, and the transmission plate is connected with the L-shaped connecting plate through a telescopic connecting rod.
10. The device for detecting the lifting-off steel wire rope of the tower crane according to claim 9, wherein: a screw rod is rotatably arranged on the bottom frame, a third motor is fixedly arranged on the bottom frame, and an output shaft of the third motor is fixedly connected with the screw rod; the screw rod is in threaded fit connection with the second sliding block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210457232.4A CN114940446A (en) | 2022-04-28 | 2022-04-28 | Detection device for steel wire rope of tower crane during lifting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210457232.4A CN114940446A (en) | 2022-04-28 | 2022-04-28 | Detection device for steel wire rope of tower crane during lifting |
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| Publication Number | Publication Date |
|---|---|
| CN114940446A true CN114940446A (en) | 2022-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210457232.4A Pending CN114940446A (en) | 2022-04-28 | 2022-04-28 | Detection device for steel wire rope of tower crane during lifting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117228508A (en) * | 2023-11-14 | 2023-12-15 | 河南省重科起重机有限公司 | Bridge crane lifting hook with adjustable |
-
2022
- 2022-04-28 CN CN202210457232.4A patent/CN114940446A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117228508A (en) * | 2023-11-14 | 2023-12-15 | 河南省重科起重机有限公司 | Bridge crane lifting hook with adjustable |
| CN117228508B (en) * | 2023-11-14 | 2024-02-06 | 河南省重科起重机有限公司 | Bridge crane lifting hook with adjustable |
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