CN109132873B - Nacelle protection device, crane and method for restoring nacelle protection device - Google Patents
Nacelle protection device, crane and method for restoring nacelle protection device Download PDFInfo
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- CN109132873B CN109132873B CN201811255052.8A CN201811255052A CN109132873B CN 109132873 B CN109132873 B CN 109132873B CN 201811255052 A CN201811255052 A CN 201811255052A CN 109132873 B CN109132873 B CN 109132873B
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- 238000000034 method Methods 0.000 title abstract description 18
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- 230000007246 mechanism Effects 0.000 claims description 8
- 230000009467 reduction Effects 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 5
- 230000033001 locomotion Effects 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000011084 recovery Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000002829 reductive effect Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
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- 239000002775 capsule Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
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- 230000003247 decreasing effect Effects 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 238000009434 installation 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
- B66C15/00—Safety gear
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Abstract
本发明提供了一种挂舱保护装置、起重机及挂舱保护装置的恢复方法，涉及起重机保护装置技术领域，本发明提供的挂舱保护装置包括固定摩擦件、移动摩擦件和至少一个紧固件，其中：固定摩擦件用于安装至起重机上；移动摩擦件的一端通过各个紧固件与固定摩擦件连接，另一端用于承受重物给予的压力；各个紧固件用于调节固定摩擦件与移动摩擦件之间的摩擦力。本发明提供的挂舱保护装置构简单、成本低，不需要持续供电、保压，摩擦力的大小可以通过紧固件的预紧力或者通过紧固件的数量进行调整，且在挂舱发生以后，能维持当前状态以便检修，不会随意移动，实用性更强。
The present invention provides a nacelle protection device, a crane and a method for restoring the nacelle protection device, and relates to the technical field of crane protection devices. The nacelle protection device provided by the present invention includes a fixed friction part, a movable friction part and at least one fastener, wherein: the fixed friction part is used to be installed on the crane; one end of the movable friction part is connected to the fixed friction part through each fastener, and the other end is used to bear the pressure given by the heavy object; each fastener is used to adjust the friction force between the fixed friction part and the movable friction part. The nacelle protection device provided by the present invention has a simple structure and low cost, does not require continuous power supply and pressure maintenance, and the magnitude of the friction force can be adjusted by the pre-tightening force of the fastener or by the number of fasteners. After the nacelle occurs, it can maintain the current state for maintenance, will not move at will, and is more practical.
Description
Technical Field
The invention relates to the technical field of crane protection devices, in particular to a hanging cabin protection device, a crane and a recovery method of the hanging cabin protection device.
Background
The hanging cabin is a special working condition of the crane. Usually, the lifting appliance is stopped or caught by an obstacle when lifting at a high speed. At this time, the force of the steel wire rope is increased sharply due to the huge inertia of the original transmission mechanism, and further, the hanging cabin load can cause great damage to the structure and the mechanism, and even irreparable loss.
The hanging cabin protection device used on the existing container crane mainly has several forms:
In one mode, a hydraulic ram is used, in which the hydraulic ram is connected to the pulley by some form. The pulley is kept at a certain position under the normal working condition. As the force experienced by the pulley increases, the cylinder pressure increases. When the set value is exceeded, the oil cylinder starts to move to absorb energy through the action of the overflow valve, so that the force of the steel wire rope is not increased any more. The hanging cabin protection device in the first mode is used in cooperation with the hydraulic mechanism, the structure is complex, and the later maintenance cost is high due to high production and manufacturing cost of the hydraulic mechanism. In addition, in order to ensure the position of the oil cylinder under normal conditions, continuous power supply or pressure maintaining is required, which is not beneficial to energy saving.
In the second mode, viscous damping of a damper is used as a working medium, but the viscous damping is used as a special medium, and the cost is very high. Secondly, the triggering force of the hanging cabin adopting the mode is permanently fixed and not adjustable after leaving the factory, and the damper is not controlled to rebound to the original position once the external force disappears before a maintainer removes the fault due to the automatic recovery function of the damper. Maintenance personnel cannot accurately evaluate the equipment damage. This can lead to uncontrollable risks in practice.
And thirdly, using the modes of partial fracture and the like of the metal material as a disposable hanging cabin protection device. The device is only suitable for small lifting equipment. The healing process consumes new materials and labor due to the local fracture of the material. So that it is not suitable for modern large-scale equipment.
Therefore, how to provide a hanging cabin protecting device with simple structure, low cost and strong controllability, a crane and a recovering method of the hanging cabin protecting device are one of technical problems to be solved by the person skilled in the art.
Disclosure of Invention
The invention aims to provide a hanging cabin protection device, a crane and a recovery method of the hanging cabin protection device, so as to solve the technical problems of complex structure, high cost and poor controllability of the hanging cabin protection device in the prior art.
In a first aspect, the present invention provides a pod protection device comprising a fixed friction member, a movable friction member, and at least one fastener, wherein:
the fixed friction piece is used for being mounted on a crane;
one end of the movable friction piece is connected with the fixed friction piece through each fastening piece, and the other end of the movable friction piece is used for bearing the pressure given by the weight;
Each of the fasteners is used to adjust a friction force between the fixed friction member and the movable friction member.
Further, the fixed friction piece is in sliding connection with the movable friction piece through each fastening piece, a first slot for inserting each fastening piece is formed in the fixed friction piece, and a second slot for inserting each fastening piece is formed in the movable friction piece.
Further, the fixed friction piece comprises a left clamping arm and a right clamping arm which are oppositely arranged, the left clamping arm and the right clamping arm are respectively provided with a first slot, and the movable friction piece is clamped between the left clamping arm and the right clamping arm through each fastener.
Further, the fastener includes a bolt, a nut, and an elastic member, wherein:
The bolt passes through the fixed friction member and/or the bolt passes through the movable friction member;
the nut is sleeved on the bolt;
the elastic piece is sleeved on the bolt, one end of the elastic piece is propped against the nut or the head of the bolt, the other end of the elastic piece is propped against the fixed friction piece to compensate the gap between the nut and the fixed friction piece and provide pretightening force, or the other end of the elastic piece is propped against the movable friction piece to compensate the gap between the nut and the movable friction piece and provide pretightening force.
Further, when the fastener is one:
the movable friction piece is a transmission shaft for adjusting and locking the position of a pulley in the crane, and the transmission shaft comprises a first shaft body and a first friction piece sleeved outside the first shaft body;
the fixed friction piece is a gear in the reduction gearbox on the crane, the gear is in transmission connection with the first shaft body through the fastener, and the end face of the gear abuts against the first friction piece.
Further, when the fastener is one:
The movable friction piece is a power output shaft of a motor for adjusting and locking the position of a pulley in the crane, and the power output shaft comprises a second shaft body and a second friction piece sleeved outside the second shaft body;
The fixed friction piece is the shell of the motor or the electromagnetic brake of the motor, the shell of the motor or the electromagnetic brake of the motor is in transmission connection with the power output shaft through the fastening piece, and the end face of the shell of the motor or the electromagnetic brake of the motor abuts against the second friction piece.
Further, the fixed friction piece comprises a first adjusting section, and the thickness of the first adjusting section is smaller than or larger than that of other parts of the fixed friction piece;
or the movable friction piece comprises a first adjusting section, and the thickness of the first adjusting section is smaller than or larger than that of other parts of the movable friction piece.
Further, the fixed friction piece comprises a second adjusting section, and the width of the second adjusting section is smaller than or larger than the width of other parts of the fixed friction piece;
Or the movable friction piece comprises a second adjusting section, and the width of the second adjusting section is smaller than or larger than the width of other parts of the movable friction piece.
In a second aspect, the invention also provides a crane, comprising the nacelle protection device according to any one of the first aspects.
In a third aspect, the present invention further provides a recovery method of the hanging cabin protection device, where any one of the hanging cabin protection devices in the first aspect is adopted, including:
A pulling force is imparted to the movable friction member to move the movable friction member to an original position relative to the fixed friction member.
Further, before imparting a pulling force to the moving friction member, further comprising removing a plurality of the fasteners;
And after the movable friction piece moves to an original position relative to the fixed friction piece, clamping the fixed friction piece and the movable friction piece through a plurality of fasteners.
The hanging cabin protection device, the crane and the recovery method of the hanging cabin protection device provided by the invention have the following beneficial effects:
When the hanging cabin protecting device is used, under normal load, the plurality of fasteners give clamping force to the fixed friction piece and the movable friction piece, and the movable friction piece cannot slide relative to the fixed friction piece under the action of the clamping force. When the hanging cabin occurs, the pressure given by the weight to the movable friction piece exceeds a preset value, and the pressure overcomes the friction force between the fixed friction piece and the movable friction piece, so that the movable friction piece moves relative to the fixed friction piece, and the hanging cabin protection effect is realized. The magnitude of the friction force between the fixed friction piece and the movable friction piece can be adjusted through the pretightening force of the fastening piece, and also can be adjusted through the quantity of the fastening pieces.
The hanging cabin protection device provided by the first aspect of the invention is simple to operate, and the hanging cabin protection of the crane is realized through friction force, in addition, because the sliding friction force is smaller than the static friction force, the stress of a steel wire rope pulling a heavy object is effectively prevented from exceeding a set critical value in the sliding process. Compared with the prior art, the novel hanging cabin has the advantages that the novel hanging cabin is simple in structure, low in cost, free of continuous power supply and pressure maintaining, capable of adjusting hanging cabin force at any time after leaving a factory, capable of adjusting the friction force through the pretightening force of the fastening pieces or the quantity of the fastening pieces, capable of maintaining the current state for maintenance after hanging cabin occurrence, free of free movement and higher in practicability.
Compared with the prior art, the hanging cabin protecting device in the crane provided by the second aspect of the invention has the advantages of simple structure, low cost and strong controllability, and can better cope with hanging cabin working conditions, and ensure that the stress of the steel wire rope cannot exceed a set critical value.
Compared with the prior art, the recovery method of the hanging cabin protecting device provided by the third aspect of the invention has the advantages that the recovery process is simple, the fastening piece does not need to be removed, the torsion measuring device or the spanner is not needed, and the hanging cabin protecting device can be quickly recovered to the original state under the condition of no special tool, so that the crane is protected.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a hanging cabin protection device according to a first embodiment of the present invention;
FIG. 2 is a view in the X-direction of a first embodiment of the present invention;
FIG. 3 is a schematic view of a portion of a first embodiment of the present invention;
FIG. 4 is a schematic view of a portion of a first embodiment of the present invention;
fig. 5 is a schematic structural diagram of a hanging cabin protection device according to a second embodiment of the present invention;
fig. 6 is a schematic structural diagram of a hanging cabin protection device according to a third embodiment of the present invention;
fig. 7 is a schematic structural diagram of a crane according to a fourth embodiment of the present invention;
Fig. 8 is a schematic structural diagram of another crane according to the fourth embodiment of the present invention;
Fig. 9 is a schematic structural diagram of a crane according to a fifth embodiment of the present invention;
fig. 10 is a schematic structural diagram of a crane according to a sixth embodiment of the present invention.
The icons are 1-fixed friction piece, 11-left clamping arm, 12-right clamping arm, 2-movable friction piece, 21-first shaft body, 22-first friction piece, 23-second shaft body, 24-second friction piece, 3-fastener, 31-bolt, 32-nut, 33-elastic piece, 4-crane, 41-first supporting frame, 42-first push rod, 43-second supporting frame, 44-second push rod, 45-third supporting frame, 46-third push rod, 5-motor, 6-first swing piece, 7-first pulley, 8-first supporting rod, 9-second swing piece, 10-second pulley, 101-temporary fixing device, 102-second supporting rod and 103-third supporting rod.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The following describes specific embodiments of the present invention in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
Fig. 1 is a schematic structural diagram of a hanging cabin protection device according to a first embodiment of the present invention;
Fig. 2 is a view in the X direction, fig. 3 is a schematic view of a part a provided by the first embodiment of the present invention, fig. 4 is a schematic view of a part B provided by the first embodiment of the present invention, fig. 5 is a schematic view of a hanging cabin protecting device provided by the second embodiment of the present invention, fig. 6 is a schematic view of a hanging cabin protecting device provided by the third embodiment of the present invention, fig. 7 is a schematic view of a crane provided by the fourth embodiment of the present invention, fig. 8 is a schematic view of another crane provided by the fourth embodiment of the present invention, fig. 9 is a schematic view of a crane provided by the fifth embodiment of the present invention, and fig. 10 is a schematic view of a crane provided by the sixth embodiment of the present invention.
The object of this embodiment is to provide a hanging cabin protection device, as shown in fig. 1 and 2, comprising a fixed friction member 1, a movable friction member 2 and at least one fastener 3, wherein:
the fixed friction member 1 is used for being mounted on a crane 4;
One end of the movable friction piece 2 is connected with the fixed friction piece through each fastener 3, and the other end is used for bearing the pressure given by the weight;
Each fastener 3 is used to adjust the friction between the fixed friction member 1 and the movable friction member 2.
When the hanging cabin protecting device is used, under normal load, the plurality of fasteners give clamping force to the fixed friction piece and the movable friction piece, and the movable friction piece cannot slide relative to the fixed friction piece under the action of the clamping force. When the hanging cabin occurs, the pressure given by the weight to the movable friction piece exceeds a preset value, and the pressure overcomes the friction force between the fixed friction piece and the movable friction piece, so that the movable friction piece moves relative to the fixed friction piece, and the hanging cabin protection effect is realized. The magnitude of the friction force between the fixed friction piece and the movable friction piece can be adjusted through the pretightening force of the fastening piece, and also can be adjusted through the quantity of the fastening pieces.
The hanging cabin protection device provided by the embodiment of the first aspect of the invention is simple to operate, and realizes hanging cabin protection of the crane by friction force, and in addition, because the sliding friction force is smaller than the static friction force, the stress of the steel wire rope pulling the weight is effectively prevented from exceeding a set critical value in the sliding process. Compared with the prior art, the novel hanging cabin has the advantages that the novel hanging cabin is simple in structure, low in cost, free of continuous power supply and pressure maintaining, capable of adjusting hanging cabin force at any time after leaving a factory, capable of adjusting the friction force through the pretightening force of the fastening pieces or the quantity of the fastening pieces, capable of maintaining the current state for maintenance after hanging cabin occurrence, free of free movement and higher in practicability.
Further, the nacelle protection device may further include a sensor or a travel switch, where the sensor or the travel switch is electrically connected to a motor in a hoisting mechanism on the crane. When the hanging cabin occurs, the movable friction piece moves relative to the fixed friction piece, and after the movable friction piece moves for a certain distance, the sensor or the travel switch is triggered, and the sensor or the travel switch receives an electric signal to realize shutdown. In the stopping process, the movable friction piece continuously moves relative to the fixed friction piece to consume excessive energy, so that the effect of cabin hanging protection is realized.
The following three embodiments can be classified according to the structures of the fixed friction member 1 and the movable friction member 2:
Embodiment one:
In the first embodiment, as shown in fig. 1, a fixed friction member 1 is slidably connected with a movable friction member 2 through each fastener 3, a first slot for inserting each fastener 3 is provided on the fixed friction member 1, and a second slot for inserting each fastener 3 is provided on the movable friction member 2.
The first slot in the fixed friction member 1 may be a jack. The second slot in the moving friction member 2 may also be a socket.
In the first embodiment, the number of the fasteners 3 is plural in order to make the effect of the hanging cabin protection better.
In the first embodiment, as shown in fig. 2, in order to enable the fastener 3 to better clamp the fixed friction member 1 and the movable friction member 2, the fixed friction member 1 includes a left clamp arm 11 and a right clamp arm 12 which are disposed opposite to each other, first slots are provided on the left clamp arm 11 and the right clamp arm 12, and the movable friction member 2 is clamped between the left clamp arm 11 and the right clamp arm 12 by the respective fasteners 3. In use, the fastener 3 passes through the first slot on the left clamp arm 11, the second slot on the moving friction member 2, and the first slot on the right clamp arm 12 in sequence, and causes the left clamp arm 11 and the right clamp arm 12 to clamp the moving friction member 2.
Or the movable friction member 2 may include a left connecting arm and a right connecting arm between which the fixed friction member 1 is sandwiched by the respective fasteners 3.
As shown in fig. 1 and 2, the movable friction member 2 may be a rectangular steel plate.
On the basis of the embodiment, in order to facilitate the processing and installation of the fastener 3, the fastener 3 comprises a bolt 31, a nut 32 and an elastic piece 33, wherein the bolt 31 passes through a first slot on the fixed friction piece 1 and a second slot on the movable friction piece 2, the nut 32 is sleeved on the bolt 31, the elastic piece 33 is sleeved on the bolt 31, one end of the elastic piece 33 abuts against the nut 32 or abuts against the head of the bolt 31, and the other end abuts against the fixed friction piece 1 to compensate a gap between the nut 32 and the fixed friction piece 1 and provide a pretightening force, or the other end abuts against the movable friction piece 2 to compensate a gap between the nut 32 and the movable friction piece 2 and provide a pretightening force.
In use, the specific description will be given by taking fig. 1 as an example. The bolt 31 passes through the first slot on the left arm 11, the second slot on the movable friction piece 2 and the first slot on the right arm 12 in sequence, then the elastic piece 33 is sleeved on the bolt 31, and finally the nut 32 is screwed on the bolt 31, so that the elastic piece 33 tightly presses the left arm 11, the right arm 12 and the movable friction piece 2, the elastic piece 33 can ensure that the axial force is controlled within a certain range, the fluctuation is not large, the size of thickness reduction of the left arm 11, the right arm 12 and the movable friction piece 2 after repeated friction can be compensated, and the pretightening force is avoided from being reduced.
In some other embodiments, the elastic member 33 may be interposed between the head of the bolt 31 and the fixed friction member 1, or between the head of the bolt 31 and the movable friction member 2, or between the nut 32 and the movable friction member 2.
When the hanging cabin protection device is particularly used, the position of the nut 32 relative to the bolt 31 can be adjusted according to the actual situation, so that the purpose of conveniently adjusting the triggering force of the hanging cabin protection device is achieved. For example, before shipment, or during a commissioning test or after a long period of use, the nut 32 may be screwed into the bolt 31 a distance more so that the left clamp arm 11 and the right clamp arm 12 can clamp the moving friction member 2.
Wherein the elastic member 33 may be a disc spring.
On the basis of the above embodiment, as shown in fig. 1, a steel plate for uniformly distributing the pressure is further provided between the elastic member 33 and the right clamp arm 12.
Embodiment two:
In the second embodiment, as shown in fig. 5, the fastening member 3 is one, the movable friction member 2 is a transmission shaft for adjusting and locking the position of a pulley in the crane 4, the transmission shaft comprises a first shaft body 21 and a first friction member 22 sleeved outside the first shaft body 21, the fixed friction member 1 is a gear in a reduction gearbox on the crane 4, the gear is in transmission connection with the first shaft body 21 through the fastening member 3, and the end face of the gear abuts against the first friction member 22.
It should be noted that, the gear in the reduction gearbox drives the first shaft body 21 to rotate through the friction between the gear and the first friction piece 22, the first shaft body 21 is in threaded connection with the telescopic arm, and the telescopic arm is driven to perform telescopic motion when the first shaft body 21 rotates. When the hanging cabin occurs, the weight can squeeze the telescopic arm, the pressure is directly transmitted to the first shaft body 21, the first shaft body 21 is forced to rotate relative to the gear, retraction or extension of the telescopic arm is achieved, and the hanging cabin protection effect is achieved. The operator can adjust the threshold value of the pod protection by controlling the friction between the first friction member 22 and the gear. This embodiment is a drive shaft that mounts the pod protector to the adjustment and locking pulley position. In some cases, the transmission shaft of the traction steel wire rope can be added with a hanging cabin protection device by a similar method, and the description is not repeated.
Embodiment III:
In the third embodiment, as shown in fig. 6, the fastening piece 3 is one, the movable friction piece 2 is a power output shaft of the motor 5 for adjusting and locking the position of the pulley in the crane, the power output shaft comprises a second shaft body 23 and a second friction piece 24 sleeved outside the second shaft body 23, the fixed friction piece 1 is a shell of the motor 5 or an electromagnetic brake of the motor 5, the shell of the motor 5 or the electromagnetic brake of the motor 5 is in transmission connection with the power output shaft through the fastening piece 3, and the end face of the shell of the motor 5 or the electromagnetic brake of the motor 5 is propped against the second friction piece 24.
When the nacelle occurs, the second shaft 23 rotates with respect to the housing of the motor 5 or the electromagnetic brake of the motor 5. The effect of hanging cabin protection is achieved. The operator can adjust the threshold value of the cabin protection by controlling the friction between the second friction member 24 and the housing of the motor 5 or the electromagnetic brake of the motor 5. This embodiment is a motor 5 that mounts the pod protection device to adjust and lock the position of the pulley. In some cases, the motor for pulling the steel wire rope can be added with a hanging cabin protecting device by a similar method, and the description is not repeated.
On the basis of the second embodiment and the third embodiment, the fastener 3 may include only the first nut and the first elastic member, and both ends of the first elastic member are respectively abutted against the movable friction member 2 and the first nut.
In some embodiments, as shown in fig. 3 and 4, the fixed friction member 1 includes a first adjustment section having a thickness smaller than that of other portions of the fixed friction member 1, or the movable friction member 2 includes a first adjustment section having a thickness smaller than that of other portions of the movable friction member 2. Taking the first adjusting section as an example for specific explanation, in the initial stage of the hanging cabin, the friction force needs to be reduced properly because the internal force of the steel wire rope needs to be prevented from increasing too fast, so that the friction force is reduced slightly when the first adjusting section moves between the left clamping arm 11 and the right clamping arm 12 in the initial stage of the hanging cabin, and the hanging cabin needs to be stopped as soon as possible and the friction force needs to be improved properly when the hanging cabin is in the later stage of the hanging cabin, at this time, because the moving friction member 2 continues to move relative to the left clamping arm 11 and the right clamping arm 12, other parts except the first adjusting section on the moving friction member 2 can be clamped between the left clamping arm 11 and the right clamping arm 12, the friction force is increased, and the quick stopping of the hanging cabin is realized. In a word, through the adjustment of the thickness or the width of the adjusting section, the force change process of the whole stage of the hanging cabin can be accurately controlled, so that the control of two factors of force and duration is realized.
In the first embodiment, when the fixed friction member 1 includes the first adjustment section, the thickness of the first adjustment section may be greater than the thickness of other portions of the fixed friction member 1, and at this time, in the initial stage of cabin hanging, the other portions of the fixed friction member 1 are located between the left arm 11 and the right arm 12, or when the movable friction member 2 includes the first adjustment section, the thickness of the first adjustment section may be greater than or less than the thickness of other portions of the movable friction member 2.
Or the fixed friction member 1 comprises a second adjusting section, the width of the second adjusting section is smaller or larger than the width of other parts on the fixed friction member 1, and the movable friction member 2 comprises a second adjusting section, and the width of the second adjusting section is smaller or larger than the width of other parts on the movable friction member 2. The number of slots or jacks or the contact area of the fastener 3 can be increased or decreased by adjusting the width, so that the effect of adjusting the friction force is achieved.
Specifically, the moving friction member 2 including the second adjustment section will be described as an example. When the width of the second adjusting section is larger, referring to fig. 2, the second adjusting section on the movable friction piece 2 can be provided with two rows, three rows or even more slots or jacks, on one hand, the number of the fastening pieces 3 between the fixed friction piece 1 and the movable friction piece 2 is increased, on the other hand, the contact area between the fixed friction piece 1 and the movable friction piece 2 is increased, so that the friction force between the fixed friction piece 1 and the movable friction piece 2 is increased, and when the width of the second adjusting section is smaller, the second adjusting section can be provided with only one row of slots or jacks, on the other hand, the number of the fastening pieces 3 between the fixed friction piece 1 and the movable friction piece 2 is reduced, and on the other hand, the contact area between the fixed friction piece 1 and the movable friction piece 2 is reduced, so that the friction force between the fixed friction piece 1 and the movable friction piece 2 is reduced.
An embodiment of the second aspect of the present invention provides a crane comprising the above nacelle protection device. Compared with the prior art, the hanging cabin protecting device in the crane provided by the embodiment of the second aspect of the invention has the advantages of simple structure, low cost and strong controllability, and can better cope with hanging cabin working conditions, so that the stress of the steel wire rope is ensured not to exceed a set critical value.
The following three embodiments can be classified according to the structure of the crane:
Embodiment four:
In the fourth embodiment, the crane 4 includes a first support frame 41 and a first push rod 42 connected to the first support frame 41, wherein:
As shown in fig. 7, one end of the fixed friction member 1 far away from the movable friction member 2 is connected with the first supporting frame 41, so that the hanging cabin protecting device and the driving device, namely, the hanging cabin protecting device and the first push rod 42 are connected in parallel to protect the crane, and the hanging cabin protecting device and the driving device are not mutually interfered.
Or as shown in fig. 8, one end of the fixed friction piece 1 far away from the movable friction piece 2 is connected with the tail end of the first push rod 42, so that the hanging cabin protection device and the driving device, namely the first push rod 42, are connected in series to protect the crane, and the structure is simple.
In the fourth embodiment, the crane further includes a first swinging member 6, and a first pulley 7 for winding the wire rope is provided on the first swinging member 6;
As shown in fig. 7, when the end of the fixed friction member 1 remote from the movable friction member 2 is connected to the first supporting frame 41, the first swinging member 6 is hinged to the first push rod 42 and the movable friction member 2, respectively. The first push rod 42 is for giving a pushing force to the first swinging member 6 for advancing or retreating the first pulley 7. When the capsule is in normal operation, the capsule protection device is equivalent to a fulcrum, the first swinging member 6 rotates around the axis of the capsule hinged with the movable friction member 2, when the capsule is hung, the tensile force born by the steel wire rope exceeds the rated value, and the first swinging member 6 presses the movable friction member 2, so that the movable friction member 2 moves relative to the fixed friction member 1.
As shown in fig. 8, when the end of the fixed friction member 1 away from the movable friction member 2 is connected to the end of the first push rod 42, the first swing member 6 is hinged to the movable friction member 2, and one end of the first support rod 8 is hinged to the first swing member 6, and the other end is connected to the first support frame 41. The first push rod 42 is used to give a pushing force to the pod protector, which transmits the pushing force to the first swinging member 6, so that the first swinging member 6 moves forward or backward the first pulley 7. When the cabin is hung, the tension applied to the steel wire rope exceeds the rated value, and the first swinging piece 6 pulls the movable friction piece 2 to enable the movable friction piece 2 to move relative to the fixed friction piece 1.
Fifth embodiment:
In the fifth embodiment, the crane 4 comprises a second supporting frame 43 and a second push rod 44, wherein the second push rod 44 comprises the first shaft body 21 and the first friction member 22 as shown in fig. 9. The fixed friction member 1 is a gear in a reduction gearbox on the crane 4. The gear wheel is connected to the first shaft body 21 by means of a fastener 3. The hanging cabin protecting device is combined with the driving device, namely the second push rod 44, and the structure is simple.
In the fifth embodiment, the crane further includes a second swinging member 9, and a second pulley 10 for winding the wire rope is provided on the second swinging member 9. As shown in fig. 9, the second support rod 102 is further included, the second swinging member 9 is hinged to the second push rod 44, one end of the second support rod 102 is hinged to the second swinging member 9, and the other end is connected to the second support frame 43. The second push rod 44 is used to generate a pushing force to move the second swinging member 9 forward or backward to the second pulley 10. When the cabin is hung, the tension applied to the steel wire rope exceeds the rated value, and the second swinging piece 9 pulls the first shaft body 21, so that the movable friction piece 2 rotates relative to the fixed friction piece 1.
Example six:
in the sixth embodiment, the crane 4 comprises a third supporting frame 45 and a third push rod 46, wherein, as shown in fig. 10 and 6, a second shaft body 23 and a second friction piece 24 sleeved outside the second shaft body 23 are arranged in the motor 5, the fixed friction piece 1 is a shell of the motor 5 or an electromagnetic brake of the motor 5, and the shell of the motor 5 or the electromagnetic brake of the motor 5 is in transmission connection with the power output shaft through a fastener 3. The hanging cabin protecting device is combined with the driving device, namely the third push rod 46, and the structure is simple.
In the sixth embodiment, the crane further includes a second swinging member 9, and a second pulley 10 for winding the wire rope is provided on the second swinging member 9. As shown in fig. 10, the swing mechanism further comprises a third supporting rod 103, the second swinging member 9 is hinged to the third push rod 46, one end of the third supporting rod 103 is hinged to the second swinging member 9, and the other end of the third supporting rod is connected to the third supporting frame 45. The third push rod 46 is used to generate a pushing force to move the second swinging member 9 forward or backward to the second pulley 10. When the cabin is hung, the tension applied to the steel wire rope exceeds the rated value, and the second swinging piece 9 pulls the second shaft body 23 through the transmission mechanism, so that the second friction piece 24 rotates relative to the fixed friction piece 1.
An embodiment of a third aspect of the present invention provides a recovery method of a hanging cabin protecting device, using any one of the hanging cabin protecting devices in the first aspect, including:
a pulling force is given to the movable friction member 2 to move the movable friction member 2 to the original position with respect to the fixed friction member 1.
As shown in fig. 7, after the crane is suspended, a temporary fixing device 101 is used, at which time the temporary fixing device 101 becomes rigidly connected. When the first push rod 42 is pushed, the first push rod 42 can overcome the original friction force under the action of a small pushing force due to the change of the lever proportion, and the movable friction piece 2 is pushed to slide to the original position. The process does not require removal of the fastener 3, nor does it require re-adjustment of the pretension of the fastener by a torsion measuring device or the like.
Compared with the prior art, the recovery method of the hanging cabin protecting device provided by the embodiment of the third aspect of the invention has the advantages that the recovery process is simple, the fastening piece is not required to be removed, the torsion measuring device or the spanner is not required, and the hanging cabin protecting device can be quickly recovered to the original state under the condition of no special tool, so that the crane is protected.
In some embodiments, prior to imparting a pulling force to the moving friction member 2, further comprising removing the plurality of fasteners 3;
when the movable friction member 2 moves to the original position relative to the fixed friction member 1, the fixed friction member 1 and the movable friction member 2 are clamped by the plurality of fasteners 3.
It should be noted that the above embodiments are merely for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solution described in the above embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present invention.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811255052.8A CN109132873B (en) | 2018-10-25 | 2018-10-25 | Nacelle protection device, crane and method for restoring nacelle protection device |
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| CN201811255052.8A CN109132873B (en) | 2018-10-25 | 2018-10-25 | Nacelle protection device, crane and method for restoring nacelle protection device |
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| CN109132873B true CN109132873B (en) | 2024-12-06 |
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| CN117088260B (en) * | 2023-10-18 | 2023-12-26 | 南通中远海运重工装备有限公司 | Damper type hanging cabin protection device of shore container bridge crane |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201166077Y (en) * | 2008-01-18 | 2008-12-17 | 北京工业大学 | Plate variable friction damper |
| CN104326367A (en) * | 2014-10-31 | 2015-02-04 | 润邦卡哥特科工业有限公司 | Damper type snag protector of quayside container bridge crane |
| CN208898395U (en) * | 2018-10-25 | 2019-05-24 | 朱丽蓉 | Nacelle protective device and crane |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201202745Y (en) * | 2007-04-28 | 2009-03-04 | 山西省潞城公建机械厂 | Novel overload protection device and electric loop chain hoister thereof |
| CN202704896U (en) * | 2012-06-28 | 2013-01-30 | 三一汽车起重机械有限公司 | Crane and protection device for telescopic boom of same |
| CN103241670A (en) * | 2013-05-09 | 2013-08-14 | 赤壁市蒲圻起重运输机械有限责任公司 | Electric chain hoist with loading limit protective device |
| CN105155716B (en) * | 2015-09-11 | 2018-11-09 | 清华大学 | A kind of double sliding/friction sinkers |
| CN207497933U (en) * | 2017-09-29 | 2018-06-15 | 上海振华重工(集团)股份有限公司 | Nacelle protective device |
| KR101828039B1 (en) * | 2017-11-22 | 2018-02-09 | (주)제이원산업 | Multi-friction damper for structure |
| CN207973442U (en) * | 2018-01-30 | 2018-10-16 | 柯迈(杭州)起重机械有限公司 | A kind of chain block with limit for tonnage defencive function |
-
2018
- 2018-10-25 CN CN201811255052.8A patent/CN109132873B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201166077Y (en) * | 2008-01-18 | 2008-12-17 | 北京工业大学 | Plate variable friction damper |
| CN104326367A (en) * | 2014-10-31 | 2015-02-04 | 润邦卡哥特科工业有限公司 | Damper type snag protector of quayside container bridge crane |
| CN208898395U (en) * | 2018-10-25 | 2019-05-24 | 朱丽蓉 | Nacelle protective device and crane |
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