CN116621067A - Hoisting braking device of crane - Google Patents
Hoisting braking device of crane Download PDFInfo
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- CN116621067A CN116621067A CN202310847215.6A CN202310847215A CN116621067A CN 116621067 A CN116621067 A CN 116621067A CN 202310847215 A CN202310847215 A CN 202310847215A CN 116621067 A CN116621067 A CN 116621067A
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- brake
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- 239000010720 hydraulic oil Substances 0.000 claims description 12
- 239000003921 oil Substances 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 description 15
- 230000008569 process Effects 0.000 description 11
- 230000008859 change Effects 0.000 description 7
- 238000005381 potential energy Methods 0.000 description 5
- 241000842962 Apoda limacodes Species 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/06—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect
- B66D5/08—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect embodying blocks or shoes
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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
- B66C13/16—Applications of indicating, registering, or weighing devices
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The application relates to the technical field of crane braking, in particular to a hoisting braking device of a crane, which comprises a first auxiliary braking main body, a main braking main body and a second auxiliary braking main body, wherein the first auxiliary braking main body and the second auxiliary braking main body are distributed on two sides of the main braking main body; the main braking main body comprises two second braking arms, a second braking drum and a main braking disc, wherein the second braking drum is fixed at the middle part of the inner side of the second braking arms through bolts, and the main braking disc is arranged between the second braking drums. According to the application, the main braking main body is arranged, so that the normal stable braking operation of the jack can be realized, when the main braking main body fails, the second auxiliary braking main body can assist in safe and timely rapid braking, and when the main braking main body and the second auxiliary braking main body are inconvenient to stably rotate in rainy days.
Description
Technical Field
The application relates to the technical field of crane braking, in particular to a hoisting braking device of a crane.
Background
The hoisting brake device of the crane generally refers to a device for controlling the lifting or lowering speed of the hook during operation of the crane. The crane is characterized by comprising a brake, a brake drum, a brake disc and other components, wherein the brake drum or the brake disc is fixed through the brake when the crane works, so that the rotation of the wire rope pulley is controlled, the lifting hook is prevented from unexpected situations caused by stress change when the crane is suspended in the air, and meanwhile, after the motor loses control of the wire rope pulley in the process of suspending a heavy object by the crane, the heavy object rapidly drops under the action of gravity, so that the crane is damaged under the action of gravity when the brake is started slowly.
The patent with the publication number CN113291978B discloses an intelligent braking device for hoisting a crane, which comprises a crane hanger and a sling mechanism, wherein a cam is arranged at the outer end of a transmission rod between a pair of bearing walls of the crane hanger, n cam plates are uniformly distributed on the circumference of the cam plate in the radial direction, n limiting plates are hinged to the inner wall of a cylindrical frame sleeved at the outer end of the transmission rod in sequence, and each limiting plate can enter between adjacent cam plates at corresponding positions only when in an inclined state. According to the application, the linear driving mechanism can control the reverse self-locking mechanism under the condition that the hoisting driving mechanism is stopped, so that each limiting plate enters into each convex plate gap to carry out safety braking on the hoisting device, the safety threat is effectively reduced, and the hoisting device moves more stably and smoothly.
However, the existing hoisting braking device of the crane cannot thoroughly lock and fix the brake disc in the using process, but in rainy days, rainwater is adhered to the outer wall of the brake disc, so that the locking performance is greatly reduced, potential safety hazards exist in the making process, and the braking can not be fully realized, so that a device is needed to solve the problems.
Disclosure of Invention
Aiming at the problems in the prior art, the application provides a hoisting braking device of a crane.
The technical scheme adopted for solving the technical problems is as follows: the hoisting braking device of the crane comprises a first auxiliary braking main body, a main braking main body and a second auxiliary braking main body, wherein the first auxiliary braking main body and the second auxiliary braking main body are distributed on two sides of the main braking main body;
the main brake main body comprises two second brake arms, a second brake drum and a main brake disc, wherein the second brake drum is fixed at the middle part of the inner side of the second brake arms through bolts, and the main brake disc is arranged between the second brake drums;
the first auxiliary brake main body comprises a first auxiliary brake disc and two first brake drums, wherein the first auxiliary brake disc is positioned between the two first brake drums, and a sand grinding disc is fixedly arranged on the outer circumference of the first auxiliary brake disc;
the second auxiliary brake main body comprises a locking part and a second auxiliary brake disc, and the second auxiliary brake disc is arranged in the middle of the locking part;
the first auxiliary brake disc, the main brake disc and the second auxiliary brake disc are all positioned on the same axis, and the first auxiliary brake disc and the main brake disc are fixedly connected;
the center of the second auxiliary brake disc is fixedly connected with a resistance ring, a spline shaft is rotationally arranged in the resistance ring, a groove is formed in one side, close to the spline shaft, of the resistance ring, and a bulge matched with the groove is connected to the periphery of the spline shaft;
and the first auxiliary braking main body is connected with a rainfall sensor and a rotating speed sensor.
Preferably, the first auxiliary braking main body further comprises a first mounting base, a first braking arm, a mounting support frame, an electric hydraulic rod, a first adjusting control arm and a first pulling control rod, the mounting support frame is fixedly connected to the first mounting base, the electric hydraulic rod is fixedly mounted on the mounting support frame, the first braking arm is symmetrically and rotatably mounted on the upper portions of two ends of the first mounting base, the first braking drum is fixedly mounted in the middle of the inner side of the first braking arm, the first auxiliary braking disc is arranged between the first braking drums, the first adjusting control arm is rotatably connected to one end bottom of the first adjusting control arm, the other end of the first adjusting control arm is rotatably connected to the upper end of the first braking arm, and two ends of the first pulling control rod are rotatably connected to the upper end of the first braking arm and the inner portion of one end of the first adjusting control arm, which is far away from the electric hydraulic rod.
Preferably, the first brake drum and the second brake drum are arranged in an arc shape.
Preferably, the main braking main body further comprises a second mounting base, a supporting vertical frame, a hydraulic cylinder, a manual adjusting block, an extrusion adjusting disc, a second adjusting control arm and a second pulling control rod, wherein the supporting vertical frame is fixedly arranged at one end of the second mounting base, the hydraulic cylinder is arranged at the outer side of the supporting vertical frame, the hydraulic cylinder is fixedly arranged on the second mounting base, the second braking arm is symmetrically and rotatably arranged at the inner parts of two ends of the second mounting base, one end of the second pulling control rod is rotatably connected with the inner part of the second adjusting control arm, the bottom of the connecting end of the second pulling control rod and the bottom of the connecting end of the second adjusting control arm are rotatably connected with the upper end of the second braking arm, the extrusion adjusting disc is fixedly arranged on the second adjusting control arm, the manual adjusting block is rotatably arranged at the upper end of the supporting vertical frame, and the upper end of the hydraulic cylinder is rotatably connected with the outer end of the second adjusting control arm.
Preferably, the rotational speed sensor is able to regulate the friction between the main brake disc and the second auxiliary brake disc.
Preferably, the locking fixing grooves are uniformly formed in two sides of the second auxiliary brake disc.
Preferably, the locking part comprises a piston cylinder, a hydraulic oil conveying pipe, a first locking clamp, an oil path conveying frame plate, a second locking clamp and friction blocks, wherein the oil path conveying frame plate is symmetrically distributed, the piston cylinder is fixedly arranged on the oil path conveying frame plate, the first locking clamp and the second locking clamp are arranged on the oil path conveying frame plate, the friction blocks are fixedly arranged on the inner sides of the second locking clamp and the first locking clamp, and the hydraulic oil conveying pipe is fixedly connected with the outer sides of the piston cylinder.
Preferably, the second mounting base is fixedly connected with the first mounting base, and the middle part of the first auxiliary brake disc is fixedly connected with the middle parts of the main brake disc and the second auxiliary brake disc.
Preferably, the first regulation control arm outside fixed mounting has the mounting panel, fixedly connected with rain sensor on the mounting panel, the bottom fixed mounting of mounting panel has the controller.
Preferably, the rainwater sensor is connected with the controller through wireless signals, and the controller is electrically connected with the electric hydraulic rod through a connecting wire.
The application has the beneficial effects that:
1. according to the application, the main braking main body is arranged, so that the normal stable braking operation of the jack can be realized, when the main braking main body fails, the second auxiliary braking main body can assist in safe, timely and rapid braking, and when the main braking main body and the second auxiliary braking main body are inconvenient to stably rotate in rainy days, the first auxiliary braking main body can assist in safe braking treatment, so that the equipment is timely, safe, stable and reliable in braking.
2. According to the application, the rain sensor is arranged to automatically identify and sense heavy rain in rainy days, and when heavy rain is sensed, the controller can automatically control the operation of the electric hydraulic rod, and the two first brake drums are automatically controlled to clamp, clamp and lock the sand grinding disc and the first auxiliary brake disc through the electric hydraulic rod, so that the automatic operation protection function in rainy days is realized.
3. Through the rotational speed sensor, resistance circle and the corbel that set up, the rotational speed change of main brake disk in the braking process according to rotational speed sensor discernment realizes the braking wear detection to main brake disk and first auxiliary brake disk, the device of being convenient for in time changes, ensure hoist and mount braking's safety, utilize the cooperation of corbel and resistance circle simultaneously, avoid the hoist to take place to damage under the effect of heavy object potential energy when emergency braking stops, and through the change of the frictional force between control resistance circle and the corbel, reduce the potential energy that the emergency stop caused to minimum, ensure the safety of hoist body, and when main brake disk and first auxiliary brake disk become invalid, can realize protective emergency braking through the cooperation of resistance circle and corbel as reserve arresting gear.
Drawings
The application will be further described with reference to the drawings and examples.
FIG. 1 is a schematic view of a front perspective view of a main body of the present application;
FIG. 2 is a schematic side view of the main body of the present application;
FIG. 3 is a schematic view of a first auxiliary brake main body according to the present application;
FIG. 4 is a schematic view of a first auxiliary brake disc according to the present application;
FIG. 5 is a schematic view of a main brake body structure according to the present application;
FIG. 6 is a schematic illustration of a service brake body with a service brake disc removed in accordance with the present application;
FIG. 7 is a schematic view of a second auxiliary brake main body according to the present application;
FIG. 8 is a schematic view of a second auxiliary brake disc according to the present application;
FIG. 9 is a schematic view of a second auxiliary brake main body according to the present application;
FIG. 10 is a schematic structural view of a second embodiment of a body according to the present application;
fig. 11 is a schematic cross-sectional view of a second auxiliary brake disk according to the present application.
In the figure: 1. a first auxiliary brake body; 2. a main brake body; 3. a second auxiliary brake body; 4. a first auxiliary brake disc; 5. a first mounting base; 6. a first brake arm; 7. installing a supporting frame; 8. an electric hydraulic rod; 9. a first adjustment control arm; 10. a first pull control lever; 11. a first brake drum; 12. a sanding plate; 13. a second brake arm; 14. a second brake drum; 15. a second mounting base; 16. a supporting stand; 17. a hydraulic cylinder; 18. a manual adjustment block; 19. extruding the adjusting disc; 20. a second adjustment control arm; 21. a main brake disc; 22. a second pull control lever; 23. a locking part; 24. a second auxiliary brake disc; 2401. a resistance ring; 25. locking the fixed groove; 26. a piston cylinder; 27. a hydraulic oil delivery pipe; 28. a first locking clamp; 29. an oil way conveying frame plate; 30. a second locking clamp; 31. a friction block; 32. a rain sensor; 33. a controller; 34. a mounting plate; 35. and (5) a flower shaft.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the application herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The application is further described below with reference to the accompanying drawings.
Example 1
As shown in fig. 1, 2, 5 and 6, the lifting brake device of the crane of the present application comprises a first auxiliary brake main body 1, a main brake main body 2 and a second auxiliary brake main body 3, wherein the first auxiliary brake main body 1 and the second auxiliary brake main body 3 are distributed on two sides of the main brake main body 2, the main brake main body 2 comprises a second brake arm 13, a second brake drum 14, a second mounting base 15, a supporting stand 16, a hydraulic cylinder 17, a manual adjusting block 18, an extrusion adjusting disc 19, a second adjusting control arm 20, a main brake disc 21 and a second pulling control rod 22, the supporting stand 16 is fixedly mounted on one end of the second mounting base 15, the hydraulic cylinder 17 is arranged on the outer side of the supporting stand 16, the hydraulic cylinder 17 is fixedly mounted on the second mounting base 15, the second brake arm 13 is symmetrically and rotatably mounted inside two ends of the second mounting base 15, the second brake drum 14 is fixed at the middle part of the inner side of the second brake arm 13 through a bolt, one end of a second pulling control rod 22 is rotationally connected in the second adjusting control arm 20, the bottom of the connecting end of the second pulling control rod 22 and the second adjusting control arm 20 is rotationally connected with the upper end of the second brake arm 13, an extrusion adjusting disc 19 is fixedly arranged on the second adjusting control arm 20, a manual adjusting block 18 is rotationally arranged at the upper end of a supporting vertical frame 16, the upper end of a hydraulic cylinder 17 is rotationally connected with the outer end of the second adjusting control arm 20, a main brake disc 21 is arranged between the second brake drums 14, the steady braking operation of a jack can be realized by arranging a main brake main body 2, when the main brake main body 2 is used, the safe, timely and rapid braking can be assisted by the second auxiliary brake main body 3, when the main brake main body 2 and the second auxiliary brake main body 3 are inconvenient to stably rotate in rainy days, auxiliary safety braking treatment can be carried out through the arranged first auxiliary braking main body 1, so that the equipment is timely, safe, stable and reliable in braking.
As shown in fig. 3 and 4, the first auxiliary brake main body 1 comprises a first auxiliary brake disc 4, a first mounting base 5, a first brake arm 6, a mounting support frame 7, an electric hydraulic rod 8, a first adjusting control arm 9, a first pulling control rod 10 and a first brake drum 11, wherein the mounting support frame 7 is fixedly connected to the first mounting base 5, the electric hydraulic rod 8 is fixedly mounted on the mounting support frame 7, the first brake arm 6 is symmetrically and rotatably mounted at the upper parts of the two ends of the first mounting base 5, the first brake drum 11 is fixedly mounted at the middle part of the inner side of the first brake arm 6, the first auxiliary brake disc 4 is arranged between the first brake drums 11, the first adjusting control arm 9 is rotatably connected to the bottom of one end of the first adjusting control arm 9, the other end of the first adjusting control arm 9 is rotatably connected with the upper end of the first brake arm 6, the two ends of the first pulling control rod 10 are respectively rotatably connected to the upper end of the first brake arm 6 and the inner side of one end of the first adjusting control arm 9 far away from the electric hydraulic rod 8, the electric hydraulic rod 8 is controlled, the electric hydraulic rod 8 is symmetrically rotated, the electric hydraulic rod 8 is driven, the first brake rod 8 is synchronously is driven by the electric hydraulic rod 8, the first brake rod 9 is driven by the electric hydraulic rod 9, the first brake arm 9 is synchronously driven by the first brake arms 9 and the first brake arms are synchronously driven by the first brake discs 4 and the first brake arms 9 are synchronously driven and the first brake arms 9 are synchronously rotatably and the first brake arms are rotatably connected with the first brake arms 4.
The first brake drum 11 and the second brake drum 14 are provided in an arc shape, and can engage the main brake disc 21 and the first auxiliary brake disc 4, respectively.
The middle part fixed mounting of first auxiliary brake disk 4 has abrasive disk 12, receives the influence of rainwater when first brake drum 11 and abrasive disk 12 braking clamp to weaken greatly for this equipment can be in the stable realization braking of rainy day, makes the operation in-process safe.
As shown in fig. 7, the second auxiliary brake body 3 includes a locking portion 23 and a second auxiliary brake disc 24, and the second auxiliary brake disc 24 is provided in the middle of the locking portion 23. The second auxiliary brake disk 24 can be locked and fixed quickly by the locking part 23.
As shown in fig. 8 and 9, the locking fixing grooves 25 are uniformly formed in two sides of the second auxiliary brake disc 24, the locking portion 23 comprises a piston cylinder 26, a hydraulic oil conveying pipe 27, a first locking clamp 28, an oil-way conveying frame plate 29, a second locking clamp 30 and friction blocks 31, the oil-way conveying frame plate 29 is symmetrically distributed, the piston cylinder 26 is fixedly arranged on the oil-way conveying frame plate 29, the first locking clamp 28 and the second locking clamp 30 are arranged on the oil-way conveying frame plate 29, the friction blocks 31 are fixedly arranged on the inner sides of the second locking clamp 30 and the first locking clamp 28, the hydraulic oil conveying pipe 27 is fixedly connected to the outer sides of the piston cylinder 26, the hydraulic oil conveying pipe 27 conveys hydraulic oil to the inner sides of the piston cylinder 26 and the oil-way conveying frame plate 29, the two first locking clamp 28 and the second locking clamp 30 which are symmetrically distributed are synchronously moved through the hydraulic oil and the piston inside the piston of the piston cylinder 26, the second locking clamp 30 and the first locking clamp 28 are fixedly clamped on two sides of the second auxiliary brake disc 24, and the friction blocks 31 and the second locking clamp 24 are arranged on the outer sides of the second auxiliary brake disc 25, and the locking grooves can be fixedly arranged on the outer sides of the auxiliary brake disc 25.
The second installation base 15 is fixedly connected with the first installation base 5, and the middle part of the first auxiliary brake disc 4 is fixedly connected with the middle parts of the main brake disc 21 and the second auxiliary brake disc 24, so that one locking and fixing and other synchronous stopping rotation are realized.
The working principle is as follows: when braking is needed in the crane operation process, the hydraulic cylinder 17 is controlled, the second adjusting control arm 20 automatically operates through the hydraulic cylinder 17, at the moment, the rotating second adjusting control arm 20 can synchronously rotate the two second brake arms 13 by means of the second pulling control rod 22, so that the two second brake drums 14 are driven to synchronously attach to the main brake disc 21, the outer wall of the main brake disc 21 is pressed, the main brake disc 21 is locked and fixed, the rotating shaft is fixedly connected with the main brake disc 21, after a braking instruction is sent, when a braking command is not executed or a braking effect is poor, and emergency braking is needed, the locking part 23 is started at the moment, hydraulic oil is conveyed to the piston cylinder 26 and the oil way conveying frame plate 29 through the hydraulic oil conveying pipe 27 in the locking part 23, and the two first locking calipers 28 and the second locking calipers 30 which are symmetrically distributed synchronously move, the second locking calipers 30 and the first locking calipers 28 are used for locking and fixing two sides of the second auxiliary brake disc 24, and the auxiliary brake disc 24 are arranged through the friction fixing blocks 31 and the auxiliary brake disc 24 which are arranged, and the auxiliary brake disc 24 can be connected with the outside of the auxiliary brake disc 24 in a rapid and fixed manner, and the auxiliary brake disc can be locked and braked rapidly and fixed;
when the crane rains in the use process, the electric hydraulic rod 8 is controlled during braking, so that the electric hydraulic rod 8 runs, the first adjusting control arm 9 can be driven to brake through the electric hydraulic rod 8, the two first braking arms 6 can synchronously rotate through the first adjusting control arm 9 and the first pulling control rod 10 which is connected with the first adjusting control arm 9 in a braking manner, the two first braking arms 6 which synchronously rotate can drive the two first braking drums 11 to synchronously move and squeeze towards the two sides of the first auxiliary braking disc 4, the braking of the first auxiliary braking disc 4 is realized, and as the sand grinding disc 12 is fixedly arranged in the middle of the first auxiliary braking disc 4, the influence of rainwater on the braking of the first braking drums 11 and the sand grinding disc 12 is greatly weakened, so that the device can stably realize braking in a rainy day, and the operation process is safe.
Example 2
Based on the above embodiment 1, although the overall control of the braking of the apparatus is achieved by the mutual cooperation between the first auxiliary braking main body 1 and the second auxiliary braking main body 3 and the main braking main body 2, and the braking adjustment of the crane is completed according to the weather and the braking effect, at the same time, the adjustment of the braking distance is required due to the different weight of the load, and if the first auxiliary braking main body 1 and the main braking main body 2 lose the braking effectiveness, the main body of the crane is extremely easily damaged only by the emergency braking of the second auxiliary braking main body 3, and the following technical scheme is proposed for the above problem.
When the embodiment is implemented, the rain sensor 32 can automatically identify and sense heavy rain in rainy days, and when heavy rain is sensed, the controller 33 can automatically control the electric hydraulic rod 8 to operate, and the two first brake drums 11 are automatically controlled to clamp and lock the grinding disc 12 and the first auxiliary brake disc 4, so that the function of automatic operation protection in rainy days is achieved.
As shown in fig. 10 and 11, a mounting plate 34 is fixedly mounted on the outer side of the first adjusting control arm 9, a rain sensor 32 is fixedly mounted on the upper end of the mounting plate 34, a controller 33 is fixedly mounted on the bottom end of the mounting plate 34, the rain sensor 32 is in wireless signal connection with the controller 33, and the controller 33 is electrically connected with the electric hydraulic rod 8 through a connecting wire.
The first auxiliary brake disc 4, the main brake disc 21 and the second auxiliary brake disc 24 are all on the same axis, and the first auxiliary brake disc 4 and the main brake disc 21 are fixedly connected, that is, the rotation speeds of the first auxiliary brake disc 4 and the main brake disc 21 are the same, and when any one of the first auxiliary brake disc 4 and the main brake disc 21 is stressed and decelerated, the first auxiliary brake disc 4 and the main brake disc 21 are stressed and decelerated, so that hoisting brake control of the crane is realized.
Meanwhile, the first auxiliary brake disc 4, the main brake disc 21 and the second auxiliary brake disc 24 are in relative rotation connection, that is, the bearings on the main brake disc 21 and the second auxiliary brake disc 24 are in rotation connection.
In order to ensure that when the braking distance between the first auxiliary brake disc 4 and the main brake disc 21 is larger or fails, the device can be controlled by the coordinated control of the second auxiliary brake disc 24 under the premise of ensuring the normal operation of the crane, and further, a resistance ring 2401 is fixedly connected to the center of the second auxiliary brake disc 24, a spline 35 is arranged in the resistance ring 2401 in a rotating manner, a groove is formed in one side, close to the spline 35, of the resistance ring 2401, a bulge matched with the groove is arranged on the periphery of the spline 35 in a connecting manner, meanwhile, the inner diameter of the resistance ring 2401 can be adjusted, so that the distance between the resistance ring 2401 and the spline 35 can be adjusted, the depth adjustment of the bulge in the groove can be realized, and the adjustment of the friction force between the resistance ring 2401 and the spline 35 can be realized, wherein in order to ensure that the relative rotation between the resistance ring 2401 and the spline 35 can be realized, and further, in this embodiment, the material of the resistance ring 2401 is preferably rubber material, so that when the spline 35 is larger, the bulge on the spline 35 and the groove in the resistance ring 35 can be caused to move relatively, and meanwhile, the friction force between the bulge on the spline 35 and the main brake disc can be further reduced, and the auxiliary friction force of the brake disc 2404 can be realized.
The first auxiliary brake main body 1 is connected with a rotation speed sensor, and the rotation speed of the first auxiliary brake disc 4 and the main brake disc 21 can be detected through the set rotation speed sensor, so that the braking efficiency of the first auxiliary brake disc 4 and the main brake disc 21 can be identified and detected according to the indication of the rotation speed sensor, and meanwhile, the friction between the main brake disc 21 and the second auxiliary brake disc 24 can be regulated through the rotation speed sensor.
The rotation speed sensor can be adjusted according to the weight of the cargo borne by the crane, namely, when the rotation speed sensor detects that the rotation speed of the first auxiliary brake disc 4 reaches the target rotation speed in the same weather condition, the heavier the cargo is borne, the longer the descending height is, in the embodiment, the weight of the cargo is set to be consistent, and the specific weight of the cargo is not explained.
In the present embodiment, the braking distance provided by the braking device is classified into three types, namely, a target distance, which is a normal braking distance, a dangerous distance, which is a distance at which the first auxiliary brake disc 4 starts braking, and a limit distance, which is a distance at which the second auxiliary brake body 3 starts braking.
When the rainfall sensor does not detect the change of the rainfall, when the crane needs to brake, the clamping restriction is firstly carried out on the main brake disc 21 through the second brake drum 14, in the restriction process, the rotation speed of the main brake disc 21 is identified and uploaded through the rotation speed sensor, and when the braking distance of the main brake disc 21 is smaller than or equal to the target distance, the braking of the crane is completed, namely, the main brake disc 21 and the second brake drum 14 are in a normal working state at the moment.
When the braking distance of the main brake disc 21 exceeds the target distance, the rotation speed sensor still detects that the main brake disc 21 rotates, at this time, the first brake drum 11 is controlled to carry out wrapping braking on the first auxiliary brake disc 4, so that hoisting braking is completed on the auxiliary main brake disc 21, and when the braking distance between the main brake disc 21 and the first auxiliary brake disc 4 is larger than the target distance and smaller than or equal to the dangerous distance, at this time, abrasion occurs between the main brake disc 21 and the second brake drum 14, the braking efficiency is reduced, meanwhile, the first auxiliary brake disc 4 and the first brake drum 11 are in a normal working state, when the first auxiliary brake disc 4 starts braking, the rotation speed of the main brake disc 21 is identified according to the rotation speed sensor, identification detection on the abrasion condition of the main brake disc 21 can be achieved, and when the main brake disc 21 exceeds the target distance, the rotation speed of the main brake disc 21 is faster, namely, the abrasion of the main brake disc 21 and the second brake drum 14 is larger.
It should be noted that, when the main brake disc 21 and the first auxiliary brake disc 4 are both in a rotating state, the spindle 35 can drive the second auxiliary brake disc 24 to synchronously rotate, that is, no relative sliding occurs between the spindle 35 and the resistance ring 2401.
When the braking distance between the main brake disc 21 and the first auxiliary brake disc 4 exceeds the dangerous distance, the second auxiliary brake disc 24 is locked at this moment, the rotation of the main brake disc 21 and the first auxiliary brake disc 4 is eliminated or weakened, the friction condition between the resistance ring 2401 and the spline 35 is at a normal distance, at this moment, if the rotation speed between the main brake disc 21 and the first auxiliary brake disc 4 is smaller, the force exerted on the resistance ring 2401 by the spline 35 cannot promote the spline 35 to rotate, and further, the crane is directly braked, meanwhile, the potential energy after braking cannot damage the crane due to the lower rotation speed of the main brake disc 21, and the rotation force of the spline 35 can be partially counteracted due to the fact that the resistance ring 2401 is composed of rubber, so that the safe hoisting braking is ensured.
When the rotation speed between the main brake disc 21 and the first auxiliary brake disc 4 is relatively high, at this time, the spline 35 rotates relatively to the resistance ring 2401, and when the spline 35 rotates in the resistance ring 2401, the resistance of the resistance ring 2401 needs to be overcome first, so as to offset the rotation force of the spline 35, reduce the rotation speed of the first auxiliary brake disc 4 and the main brake disc 21, and meanwhile, the rotation speed sensor identifies the rotation speed of the main brake disc 21, when the main brake disc 21 is still at a high rotation speed after the offset of the spline 35 and the resistance ring 2401 is weakened, the resistance ring 2401 is controlled to expand by the rotation speed sensor, so that the distance between the spline 35 and the resistance ring 2401 is reduced, the friction resistance during mutual movement is enlarged, the braking of the main brake disc 21 is realized until the spline 35 and the resistance ring 2401 are locked, and in the process, the rotation speed change of the rotation speed sensor still can realize the detection of the abrasion state of each part.
And when the braking of the first auxiliary brake disc 4 and the main brake disc 21 fails, the rotating speed sensor recognizes that the rotating speed of the main brake disc 21 is abnormal, and directly controls the second auxiliary brake disc 24 to work, at the moment, the main brake disc 21 is decelerated by the spline 35 and the resistance ring 2401, and finally, emergency braking is realized by the friction force between the resistance ring 2401 and the spline 35.
When the rainfall sensor recognizes the rainfall, the rainfall sensor and the rotating speed sensor are matched with each other at the moment, the braking distance is divided into a target distance and a limiting distance, and the braking mode is the same as the above mode.
Through the rotational speed sensor that sets up, resistance circle 2401 and festoon 35, the rotational speed change in the braking in-process of main brake disk 21 according to rotational speed sensor discernment realizes the braking wear detection to main brake disk 21 and first auxiliary brake disk 4, the device of being convenient for in time changes, ensure the safety of hoist and mount braking, utilize the cooperation of festoon 35 and resistance circle 2401 simultaneously, avoid the hoist to take place to damage under the effect of heavy object potential energy when emergency braking stops, and through the change of the frictional force between control resistance circle 2401 and the festoon 35, the potential energy that will scram caused is minimum, ensure the safety of hoist body, and when main brake disk 21 and first auxiliary brake disk 4 are out of order, can realize protective emergency braking through the cooperation of resistance circle 2401 and festoon 35, as reserve arresting gear.
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a hoist and mount arresting gear of hoist, includes first auxiliary braking main part, main braking main part and second auxiliary braking main part, its characterized in that: the first auxiliary braking main body and the second auxiliary braking main body are distributed on two sides of the main braking main body;
the main brake main body comprises two second brake arms, a second brake drum and a main brake disc, wherein the second brake drum is fixed at the middle part of the inner side of the second brake arms through bolts, and the main brake disc is arranged between the second brake drums;
the first auxiliary brake main body comprises a first auxiliary brake disc and two first brake drums, wherein the first auxiliary brake disc is positioned between the two first brake drums, and a sand grinding disc is fixedly arranged on the outer circumference of the first auxiliary brake disc;
the second auxiliary brake main body comprises a locking part and a second auxiliary brake disc, and the second auxiliary brake disc is arranged in the middle of the locking part;
the first auxiliary brake disc, the main brake disc and the second auxiliary brake disc are all positioned on the same axis, and the first auxiliary brake disc and the main brake disc are fixedly connected;
the center of the second auxiliary brake disc is fixedly connected with a resistance ring, a spline shaft is rotationally arranged in the resistance ring, a groove is formed in one side, close to the spline shaft, of the resistance ring, and a bulge matched with the groove is connected to the periphery of the spline shaft;
and the first auxiliary braking main body is connected with a rainfall sensor and a rotating speed sensor.
2. The hoisting brake device of a crane according to claim 1, wherein: the first auxiliary braking main body further comprises a first mounting base, a first braking arm, a mounting support frame, an electric hydraulic rod, a first adjusting control arm and a first pulling control rod, wherein the mounting support frame is fixedly connected to the first mounting base, the electric hydraulic rod is fixedly mounted on the mounting support frame, the first braking arm is symmetrically and rotatably mounted on the upper portions of two ends of the first mounting base, the first braking drum is fixedly mounted on the middle portion of the inner side of the first braking arm, the first auxiliary braking disc is arranged between the first braking drums, the first adjusting control arm is rotatably connected to the bottom of one end of the first adjusting control arm, the other end of the first adjusting control arm is rotatably connected to the upper end of the first braking arm, and two ends of the first pulling control rod are rotatably connected to the upper end of the first braking arm and the inner portion of one end of the first adjusting control arm far away from the electric hydraulic rod respectively.
3. The hoisting brake device of a crane according to claim 1, wherein: the first brake drum and the second brake drum are arranged in an arc shape.
4. The hoisting brake device of a crane according to claim 2, characterized in that: the main braking main part still includes second installation base, support grudging post, pneumatic cylinder, manual regulating block, extrusion regulating disc, second regulation control arm and second pulling control rod, support grudging post fixed mounting is in the one end of second installation base, the pneumatic cylinder sets up the outside of support grudging post, just pneumatic cylinder fixed mounting is in on the second installation base, second braking arm symmetry rotation is installed inside the both ends of second installation base, the one end rotation of second pulling control rod is connected the inside of second regulation control arm, the second pulling control rod with the link bottom of second regulation control arm with the upper end rotation of second braking arm is connected, the extrusion regulating disc is fixed to be set up on the second regulation control arm, the manual regulating block rotates the setting and is in the upper end of support grudging post, the upper end of pneumatic cylinder with the outer end rotation of second regulation control arm is connected.
5. The hoisting brake device of a crane according to claim 1, wherein: the rotational speed sensor can adjust the friction force between the main brake disc and the second auxiliary brake disc.
6. The hoisting brake device of a crane according to claim 5, wherein: locking fixed slots are uniformly formed in two sides of the second auxiliary brake disc.
7. The hoisting brake device of a crane according to claim 1, wherein: the locking part comprises a piston cylinder, a hydraulic oil conveying pipe, a first locking clamp, an oil circuit conveying frame plate, a second locking clamp and friction blocks, wherein the oil circuit conveying frame plate is symmetrically distributed, the piston cylinder is fixedly arranged on the oil circuit conveying frame plate, the first locking clamp and the second locking clamp are arranged on the oil circuit conveying frame plate, the friction blocks are fixedly arranged on the inner sides of the second locking clamp and the first locking clamp, and the hydraulic oil conveying pipe is fixedly connected to the outer side of the piston cylinder.
8. The hoisting brake device of a crane according to claim 4, wherein: the second installation base is fixedly connected with the first installation base, and the middle part of the first auxiliary brake disc is fixedly connected with the middle parts of the main brake disc and the second auxiliary brake disc.
9. The hoisting brake device of a crane according to claim 2, characterized in that: the first regulation control arm outside fixed mounting has the mounting panel, fixedly connected with rain sensor on the mounting panel, the bottom fixed mounting of mounting panel has the controller.
10. The hoisting brake device of a crane according to claim 9, wherein: the rainwater sensor is connected with the controller through wireless signals, and the controller is electrically connected with the electric hydraulic rod through a connecting wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310847215.6A CN116621067B (en) | 2023-07-12 | 2023-07-12 | Hoisting braking device of crane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310847215.6A CN116621067B (en) | 2023-07-12 | 2023-07-12 | Hoisting braking device of crane |
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| CN116621067A true CN116621067A (en) | 2023-08-22 |
| CN116621067B CN116621067B (en) | 2024-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310847215.6A Active CN116621067B (en) | 2023-07-12 | 2023-07-12 | Hoisting braking device of crane |
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| CN116621067B (en) | 2024-01-02 |
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