CN111498693A - Protective device for crane - Google Patents
Protective device for crane Download PDFInfo
- Publication number
- CN111498693A CN111498693A CN202010339995.XA CN202010339995A CN111498693A CN 111498693 A CN111498693 A CN 111498693A CN 202010339995 A CN202010339995 A CN 202010339995A CN 111498693 A CN111498693 A CN 111498693A
- Authority
- CN
- China
- Prior art keywords
- blocking device
- base
- controller
- heavy object
- blocking
- 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.)
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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
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/06—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads
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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
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/46—Position indicators for suspended loads or for crane elements
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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
- F16F15/08—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 rubber springs ; with springs made of rubber and metal
- F16F15/085—Use of both rubber and metal springs
Abstract
The invention relates to the technical field of protection, and discloses a protection device for a crane, which comprises: set up a plurality of rail units around the heavy object, every rail unit all includes the base, blocking device, backup pad and telescoping device, be equipped with many inside to outside spouts on the base, blocking device's bottom is equipped with a plurality of first gyro wheels, blocking device passes through first gyro wheel and spout and base sliding connection, the backup pad is located between blocking device and the telescoping device, be connected through a plurality of first compression spring between blocking device and the backup pad, the backup pad is connected with the flexible end of telescoping device, the fixed setting of telescoping device's fixing base is on the base, still be equipped with the control box on the base, be equipped with controller and portable power source in the control box, telescoping device and controller are connected with portable power source respectively, telescoping device and controller signal connection, this kind of a protector for hoist, the life of hoist spare part has been promoted.
Description
Technical Field
The invention relates to the technical field of protection, in particular to a protection device for a crane.
Background
Along with the development of economic construction, the application of the double-beam bridge crane is wider and wider, however, with the increase of the weight and the volume of the lifted weight, the gravity center of the weight needs to be readjusted to achieve the balance after lifting, the damage of the front-back or left-right swinging or rotary swinging of the weight to the local parts of the crane is larger in the lifting process, the service life of the local parts of the crane is greatly reduced, meanwhile, the abrasion of the parts is easy to cause safety accidents, and the personal or property loss is caused, at present, the abrasion resistance of the parts is improved by improving the rigidity and the hardness of the local parts of the crane, the problem cannot be fundamentally solved, however, the swinging of the weight is limited by using a common baffle, the damage to the weight or the baffle is caused, the swinging amplitude of the weight in the lifting process is reduced, the weight can be rapidly stopped, and the service life of the parts of the crane is prolonged, is a problem to be solved urgently.
Disclosure of Invention
The invention provides a protection device for a crane, which can reduce the swing amplitude of a heavy object in the hoisting process, so that the heavy object can be quickly static, and the service life of parts of the crane is prolonged.
The invention provides a protective device for a crane, comprising: set up a plurality of rail units around the heavy object, every rail unit all includes the base, blocking device, backup pad and telescoping device, be equipped with many inside to outside spouts on the base, blocking device's bottom is equipped with a plurality of first gyro wheels, blocking device passes through first gyro wheel and spout and base sliding connection, the backup pad is located between blocking device and the telescoping device, be connected through a plurality of first compression spring between blocking device and the backup pad, the backup pad is connected with the flexible end of telescoping device, the fixed setting of telescoping device's fixing base is on the base, still be equipped with the control box on the base, be equipped with controller and portable power source in the control box, telescoping device and controller are connected with portable power source respectively, telescoping device and controller signal connection.
The blocking device comprises a rectangular frame and an elastic blocking layer, wherein the elastic blocking layer is arranged in the rectangular frame and comprises: wear-resistant rubber layer, high resilience sponge layer and the metal sheet that set gradually from inside to outside still include many rubber strips, and many rubber strips move about freely and quickly the interval and set up on wear-resistant rubber layer, pass rubber strip, wear-resistant rubber layer, high resilience sponge layer and metal sheet and nut in proper order through the bolt and can dismantle and be connected, separate elasticity barrier layer for a plurality of elasticity block the piece, and the metal sheet is connected with the backup pad through a plurality of first compression spring.
The bottom of backup pad is fixed and is equipped with a plurality of second gyro wheels, and a plurality of second gyro wheels one-to-one sets up in many spouts.
And second compression springs are arranged between the first roller and the bottom of the blocking device and between the second roller and the bottom of the supporting plate.
The upper right side of the blocking device is fixedly provided with a plurality of first locating rods, the supporting plate is provided with a plurality of second locating rods in one-to-one correspondence with the first locating rods, the end faces, opposite to the first locating rods, of the second locating rods are provided with pressure sensors, the pressure sensors are respectively connected with the mobile power supply, and the pressure sensors are respectively in signal connection with the controller.
The inner side of the blocking device is fixedly provided with a plurality of distance sensors, the distance sensors are used for detecting the distance between a heavy object and the blocking device, the distance sensors are respectively connected with the mobile power supply, and the distance sensors are respectively in signal connection with the controller.
The bottom of base is equipped with a plurality of wheels that remove, still is equipped with positioner on the base.
Compared with the prior art, the invention has the beneficial effects that:
the invention drives the supporting plate to move through the telescopic device, the supporting plate drives the blocking device to do telescopic motion, the position of the blocking device is adjusted according to the swing amplitude of the heavy object, the swinging of the heavy object is limited, when the heavy object swings, the blocking device is impacted by the blocking device, the blocking device can move under the action of the first compression spring, the damage caused by hard collision between the blocking device and the heavy object is avoided, after the impact, the blocking device is restored to the original position under the action of the first compression spring and is ready for blocking the heavy object for the next time, the heavy object can be fast and stable, the telescopic device can adjust the position of the blocking device according to the swing amplitude of the heavy object, the heavy object can be quickly and stably lifted, the swinging process of the heavy object is prevented from being long, the swinging amplitude is large, the swinging amplitude of the heavy object in the lifting process can be reduced, the heavy object can be quickly static, and the service life of crane parts is prolonged.
Drawings
Fig. 1 is a schematic front structural view of a protection device provided by the present invention.
Fig. 2 is a schematic side sectional structural view of the protection device provided by the present invention.
Fig. 3 is a schematic structural diagram of an elastic barrier layer according to an embodiment of the present invention.
Description of reference numerals:
1-base, 2-chute, 3-blocking device, 3-1-wear-resistant rubber layer, 3-2-high resilience sponge layer, 3-3-metal plate, 3-4-rubber strip, 3-5-bolt, 3-6-nut, 4-first positioning rod, 5-second positioning rod, 6-support plate, 7-first roller, 8-second roller, 9-second compression spring, 10-telescoping device, 11-control box, 12-distance sensor, 13-first compression spring, 14-moving wheel, 15-positioning device.
Detailed Description
An embodiment of the present invention will be described in detail below with reference to fig. 1-3, but it should be understood that the scope of the present invention is not limited to the embodiment.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing technical solutions of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 and 2, an embodiment of the present invention provides a guard device for a crane, including: set up a plurality of rail units around the heavy object, every rail unit all includes base 1, blocking device 3, backup pad 6 and telescoping device 10, be equipped with many inside to outside spout 2 on the base 1, blocking device 3's bottom is equipped with a plurality of first gyro wheels 7, blocking device 3 is through first gyro wheel 7 and spout 2 and base 1 sliding connection, backup pad 6 is located between blocking device 3 and the telescoping device 10, be connected through a plurality of first compression spring 13 between blocking device 3 and the backup pad 6, backup pad 6 is connected with the flexible end of telescoping device 10, the fixed setting of fixing base of telescoping device 10 is on base 1, still be equipped with control box 11 on the base 1, be equipped with controller and portable power source in the control box 11, telescoping device 10 and controller are connected with portable power source respectively, telescoping device 10 and controller signal connection.
A plurality of first compression spring 13 set up to the equidirectional of multiunit, can resist the impact of heavy object to blocking device 3 in the direction of difference, promoted the effect that blocks, and telescoping device 10 is electric telescopic handle, and electric telescopic handle's flexible end can be connected with backup pad 6 through the connecting plate.
The working principle and the using method are as follows: pass through the position of controller and telescoping device adjustment backup pad 6 according to the position of heavy object, backup pad 6 drives blocking device 3 and removes, thereby adjust the interval between blocking device 3 and the heavy object, blocking device is close to backup pad 6 under first compression spring's effect after the heavy object strikes with blocking device 3, when blocking device 3 removed the minimum compression range of first compression spring 13, blocking device 3 stop motion, resist the striking of heavy object with backup pad 6 and telescoping device 10 jointly, the while is the reaction in the heavy object under first compression spring's effect, provide reverse effort to the heavy object, can make the quick stop motion of heavy object, thereby alleviate the wearing and tearing of long-time swing to hoist spare part by a wide margin, the life of hoist spare part has been improved.
In order to reduce or avoid the damage of the weight or the blocking device 3 caused by the impact force when the weight and the blocking device 3 collide with each other, as shown in fig. 3, the blocking device 3 includes a rectangular frame and an elastic blocking layer, the elastic blocking layer is disposed in the rectangular frame, and the elastic blocking layer includes: the rubber layer 3-1, the high-resilience sponge layer 3-2 and the metal plate 3-3 are sequentially arranged from inside to outside, the rubber layer 3-4 is further included, the rubber strips 3-4 are arranged on the wear-resistant rubber layer 3-1 at intervals, the bolts 3-5 sequentially penetrate through the rubber strips 3-4, the wear-resistant rubber layer 3-1, the high-resilience sponge layer 3-2 and the metal plate 3-3 to be detachably connected with the nuts 3-6, the elastic barrier layer is divided into a plurality of elastic barrier blocks, and the metal plate 3-3 is connected with the supporting plate 6 through a plurality of first compression springs 13.
The rubber strips 3-4, the wear-resistant rubber layer 3-1, the high-resilience sponge layer 3-2 and the metal plate 3-3 are respectively provided with a positioning hole, and a bolt sequentially penetrates through the rubber strips 3-4, the wear-resistant rubber layer 3-1, the high-resilience sponge layer 3-2 and the metal plate 3-3 from inside to outside and is detachably and fixedly connected with the metal plate 3-3 through a nut.
The elastic barrier layers can be fixed by the rubber strips 3-4, the bolts 3-5 and the nuts 3-6 which are vertically and horizontally spaced, and are divided into a plurality of elastic barrier blocks to resist the impact of a heavy object and improve the reaction force generated during the impact, so that the heavy object stops swinging quickly.
In order to make 3 steady motion of blocking device, improved the protection and blockked the effect, as shown in fig. 2, the fixed a plurality of second gyro wheels 8 that are equipped with in bottom of above-mentioned backup pad 6, a plurality of second gyro wheels 8 one-to-ones set up in many spouts 2, support backup pad 6 through second gyro wheel 8, avoid blocking device 3 to receive the striking back of incline direction, influence the steadiness of backup pad 6, the guard action of backup pad 6 has been improved, guard device's life has been improved simultaneously.
In order to adapt to the different striking directions of heavy object, avoid leading to protector to damage at the rigid atress of vertical direction, weaken the swing angle of heavy object simultaneously, between the bottom of above-mentioned first gyro wheel 7 and blocking device 3, all be equipped with second compression spring 9 between the bottom of second gyro wheel 8 and backup pad 6, can alleviate the striking of heavy object at the ascending atress of vertical direction through second compression spring 9, second compression spring 9 can provide the reverse effort in vertical direction simultaneously, make the heavy object weaken swing angle fast, promote the protective capacities of protector in vertical direction.
In order to avoid the impact force of the heavy object on the blocking device to be too large and cause the blocking device to be damaged, a plurality of first positioning rods 4 are fixedly arranged on the right side of the blocking device 3, a plurality of second positioning rods 5 in one-to-one correspondence with the first positioning rods 4 are arranged on the supporting plate 6, pressure sensors are arranged on the end faces, opposite to the first positioning rods 4, of the second positioning rods 5, the pressure sensors are respectively connected with a mobile power supply, and the pressure sensors are respectively connected with a controller through signals.
When the impact force of the heavy object on the blocking device is large, the pressure of the pressure sensor between the first positioning rod 4 and the second positioning rod 5 exceeds the set pressure, the controller controls the telescopic device to contract, and the blocking device 3 is driven to move outwards along the sliding groove 2, so that the blocking device is prevented from being damaged.
Partial first locating lever 4 and partial second locating lever 5 set up inside first compression spring 13, can carry on spacingly and the protection to first compression spring 13, avoid first compression spring 13 to lead to damaging at the in-process of compression.
Because the swing range of heavy object diminishes gradually, in order to cooperate the swing range of heavy object, the swing to the heavy object is blockked simultaneously, inboard fixed a plurality of distance sensor 12 that are equipped with on above-mentioned blocking device 3, distance sensor 12 is used for detecting the distance between heavy object and the blocking device 3, a plurality of distance sensor 12 are connected portable power source respectively, a plurality of distance sensor 12 are respectively with controller signal connection, when the great distance that surpasses the settlement apart from, controller control telescoping device 10 extension, telescoping device 10 drives blocking device 3 and is close to the heavy object, realize adjusting the distance between heavy object and the blocking device 3 along with the wobbling range of heavy object, the blocking effect of blocking device 3 has been improved, make the heavy object fast static.
In order to conveniently remove the protector, the bottom of base 1 is equipped with a plurality of removal wheels 14, still be equipped with positioner 15 on the base 1, conveniently carry out position adjustment to base 1 through a plurality of removal wheels 14, removal wheel 14 is the removal wheel of taking brake equipment, avoid causing base 1 to remove at the in-process that uses through a plurality of positioner 15, be equipped with a plurality of screw holes on the base 1, positioner 15's middle part is equipped with the screw thread, the screw thread passes the screw hole, positioner 15's bottom is the skid resistant course, be located base 1's below, positioner's top is equipped with adjustment handle, be located base 1's top, adjust positioner through adjustment handle and make skid resistant course and ground tightly laminate, avoid base 1 to remove at the in-process that uses.
The invention drives the supporting plate through the telescopic device, the supporting plate drives the blocking device to do telescopic motion, the position of the blocking device is adjusted according to the swing amplitude of the heavy object, the swinging of the heavy object is limited, when the heavy object swings, the blocking device is impacted by the blocking device, the blocking device can move under the action of the first compression spring, the damage caused by hard collision between the blocking device and the heavy object is avoided, after the impact, the blocking device is restored to the original position under the action of the first compression spring and is ready for blocking the heavy object for the next time, the heavy object can be fast and stable, the telescopic device can adjust the position of the blocking device according to the swing amplitude of the heavy object, the weight can be quickly and stably placed, the situation that the swinging process of the weight is long and the swinging amplitude is large, the service life of parts of the double-beam bridge crane is influenced, the problems can be fundamentally solved, and the service life of the parts of the crane is prolonged.
The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (7)
1. A guard for a crane, comprising: a plurality of fence units arranged around a heavy object, wherein each fence unit comprises a base (1), a blocking device (3), a supporting plate (6) and a telescopic device (10), a plurality of sliding grooves (2) from inside to outside are formed in the base (1), a plurality of first rollers (7) are arranged at the bottom of the blocking device (3), the blocking device (3) is connected with the base (1) in a sliding mode through the first rollers (7) and the sliding grooves (2), the supporting plate (6) is located between the blocking device (3) and the telescopic device (10), the blocking device (3) is connected with the supporting plate (6) through a plurality of first compression springs (13), the supporting plate (6) is connected with the telescopic end of the telescopic device (10), a fixing seat of the telescopic device (10) is fixedly arranged on the base (1), a control box (11) is further arranged on the base (1), a controller and a mobile power supply are arranged in the control box (11), the telescopic device (10) and the controller are respectively connected with the mobile power supply, and the telescopic device (10) is in signal connection with the controller.
2. The guard for cranes according to claim 1, characterized in that the blocking device (3) comprises a rectangular frame and an elastic barrier, which is arranged inside the rectangular frame, the elastic barrier comprising: the rubber layer elastic barrier comprises a wear-resistant rubber layer (3-1), a high-resilience sponge layer (3-2) and a metal plate (3-3) which are sequentially arranged from inside to outside, and further comprises a plurality of rubber strips (3-4), wherein the plurality of rubber strips (3-4) are arranged on the wear-resistant rubber layer (3-1) at intervals in a longitudinal and transverse mode, the rubber strips (3-4), the wear-resistant rubber layer (3-1), the high-resilience sponge layer (3-2) and the metal plate (3-3) are detachably connected with a nut (3-6) through bolts (3-5), the elastic barrier layer is divided into a plurality of elastic barrier blocks, and the metal plate (3-3) is connected with a support plate (6) through a plurality of first compression springs (13).
3. The guard device for the crane according to claim 1, wherein a plurality of second rollers (8) are fixedly arranged at the bottom of the support plate (6), and the plurality of second rollers (8) are arranged in the plurality of sliding chutes (2) in a one-to-one correspondence.
4. Guard device for crane according to claim 3, characterized in that a second compression spring (9) is provided between the first roller (7) and the bottom of the blocking device (3) and between the second roller (8) and the bottom of the support plate (6).
5. The protection device for the crane according to claim 1, wherein a plurality of first positioning rods (4) are fixedly arranged on the right side of the blocking device (3), a plurality of second positioning rods (5) corresponding to the first positioning rods (4) one by one are arranged on the supporting plate (6), pressure sensors are arranged on the end faces of the second positioning rods (5) opposite to the first positioning rods (4), the pressure sensors are respectively connected with a mobile power supply, and the pressure sensors are respectively in signal connection with the controller.
6. The guard device for the crane according to claim 5, characterized in that a plurality of distance sensors (12) are fixedly arranged on the upper inner side of the blocking device (3), the distance sensors (12) are used for detecting the distance between the heavy object and the blocking device (3), the plurality of distance sensors (12) are respectively connected with the mobile power supply, and the plurality of distance sensors (12) are respectively in signal connection with the controller.
7. The shelter for cranes according to claim 1, characterized in that the base (1) is provided at its bottom with a plurality of moving wheels (14) and that the base (1) is further provided with positioning means (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010339995.XA CN111498693A (en) | 2020-04-26 | 2020-04-26 | Protective device for crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010339995.XA CN111498693A (en) | 2020-04-26 | 2020-04-26 | Protective device for crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111498693A true CN111498693A (en) | 2020-08-07 |
Family
ID=71866389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010339995.XA Pending CN111498693A (en) | 2020-04-26 | 2020-04-26 | Protective device for crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111498693A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360905A (en) * | 2020-10-29 | 2021-02-12 | 安徽国云智能科技有限公司 | Automatic change linear parking equipment of assembly line |
| CN112607605A (en) * | 2020-12-29 | 2021-04-06 | 包木兰 | Safety protection structure of hoisting equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001023690A1 (en) * | 1999-09-29 | 2001-04-05 | Serge Stabusch | Device for controlling access to a defined and reserved area and closure using same |
| CN103663121A (en) * | 2013-12-06 | 2014-03-26 | 常州市平冈机械有限公司 | Crane hook protective device |
| CN207769156U (en) * | 2018-01-15 | 2018-08-28 | 咸阳师范学院 | A kind of sports field buffering fence |
| CN207906731U (en) * | 2018-01-19 | 2018-09-25 | 成都市翔美网络科技有限公司 | A kind of host computer special protecting equipment |
| CN208585964U (en) * | 2018-07-27 | 2019-03-08 | 泉州重达机械有限公司 | A kind of minor crane with anti-collision |
-
2020
- 2020-04-26 CN CN202010339995.XA patent/CN111498693A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001023690A1 (en) * | 1999-09-29 | 2001-04-05 | Serge Stabusch | Device for controlling access to a defined and reserved area and closure using same |
| CN103663121A (en) * | 2013-12-06 | 2014-03-26 | 常州市平冈机械有限公司 | Crane hook protective device |
| CN207769156U (en) * | 2018-01-15 | 2018-08-28 | 咸阳师范学院 | A kind of sports field buffering fence |
| CN207906731U (en) * | 2018-01-19 | 2018-09-25 | 成都市翔美网络科技有限公司 | A kind of host computer special protecting equipment |
| CN208585964U (en) * | 2018-07-27 | 2019-03-08 | 泉州重达机械有限公司 | A kind of minor crane with anti-collision |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360905A (en) * | 2020-10-29 | 2021-02-12 | 安徽国云智能科技有限公司 | Automatic change linear parking equipment of assembly line |
| CN112607605A (en) * | 2020-12-29 | 2021-04-06 | 包木兰 | Safety protection structure of hoisting equipment |
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Application publication date: 20200807 |
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