CN116239059B - Crown block lifting device - Google Patents
Crown block lifting device Download PDFInfo
- Publication number
- CN116239059B CN116239059B CN202310530051.4A CN202310530051A CN116239059B CN 116239059 B CN116239059 B CN 116239059B CN 202310530051 A CN202310530051 A CN 202310530051A CN 116239059 B CN116239059 B CN 116239059B
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- China
- Prior art keywords
- lifting
- fixed
- joint
- rod
- unidirectional
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/08—Masts; Guides; Chains
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/12—Platforms; Forks; Other load supporting or gripping members
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/677—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for conveying, e.g. between different workstations
- H01L21/67703—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for conveying, e.g. between different workstations between different workstations
- H01L21/67733—Overhead conveying
Abstract
The invention discloses a crown block lifting device which is used for lifting crown block components and comprises a base, a lifting mechanism and a driving mechanism, wherein the lifting mechanism is arranged on the base and drives the crown block components arranged on the base to lift, the driving mechanism is arranged on the lifting mechanism and is used for providing power for lifting of the lifting mechanism, the lifting mechanism comprises a lifting joint group and at least one lifting rope, and the lifting joint group can realize the stretching in the vertical direction in the moving process of the lifting rope. The driving mechanism comprises a winding shaft and a unidirectional component, one end of the lifting rope is fixed on the winding shaft, the winding shaft can wind or unwind the lifting rope in the rotation process along the axis, the lifting joint group can be further stretched, and the unidirectional component is used for limiting the winding shaft to only rotate unidirectionally in the rotation process. The manual lifting operation of the crown block assembly is realized by adopting a purely manual mechanical structure, and the lifting device is simple in structure and low in cost.
Description
Technical Field
The invention relates to the technical field of wafer processing equipment, in particular to a crown block lifting device.
Background
Overhead travelling cranes (OHT) are important equipment for handling wafer cassettes, which can clamp the wafer cassette and move along fixed rails fixed in the air to handle the wafer cassette to wafer processing equipment or wafer loading stations in different positions. The crown block is generally assembled on the ground, and when the crown block is assembled, the crown block needs to be lifted into the mid-air and installed on a fixed rail in the mid-air, or the crown block needs to be lowered from the fixed rail to the ground when maintenance or repair is needed.
At present, many devices for lifting the crown block are automatic devices, and the crown block is driven to lift by using driving components such as an automatic motor or an air cylinder. However, on the one hand, the automated equipment is relatively high in cost and inconvenient to maintain, and on the other hand, the automated equipment is usually fixed at a specified position due to the large volume and the large weight, is only suitable for operation at the specified position, and has low flexible mobility.
Disclosure of Invention
In order to overcome the defects, the invention aims to provide the overhead travelling crane lifting device which adopts a purely manual mechanical structure to realize the labor-saving lifting operation of an overhead travelling crane assembly, and has the advantages of simple structure and low cost.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a crown block hoisting device for the lift of crown block subassembly, includes base, elevating system and actuating mechanism, elevating system sets up on the base and drives the overhead traveling block subassembly that sets up above that and go up and down, actuating mechanism sets up on elevating system and is used for providing power for elevating system's lift.
The lifting mechanism comprises a lifting joint group and at least one lifting rope, and the lifting joint group can realize the stretching in the vertical direction in the moving process of the lifting rope. The driving mechanism comprises a winding shaft and a unidirectional component, one end of the lifting rope is fixed on the winding shaft, the winding shaft can wind or unwind the lifting rope in the rotation process of the winding shaft along the axis so as to realize the expansion and contraction of the lifting joint group, and the unidirectional component is used for limiting the winding shaft to only rotate unidirectionally in the rotation process.
The unidirectional assembly comprises at least one unidirectional limiting tooth, a unidirectional force application group and a gear set corresponding to the unidirectional limiting tooth, wherein the gear set is connected with the winding shaft and used for driving the winding shaft to rotate, and the unidirectional limiting tooth can rotate along the axis of the unidirectional force application group under the action of external force and can limit the rotation direction of the gear set;
the unidirectional limiting teeth comprise at least two limiting teeth groups which are distributed along the circumferential direction and are arranged at intervals, the unidirectional limiting teeth can rotate along the axis of the unidirectional limiting teeth under the action of external force to switch the two limiting teeth groups to be respectively meshed with teeth at two different positions on the gear set, when one limiting teeth group is meshed with the gear set, the unidirectional limiting teeth can only unidirectionally swing to the teeth of the limiting teeth group which are separated from the gear set under the limitation of the unidirectional force application group, and the unidirectional force application group can pull the unidirectional limiting teeth to reset.
The invention has the beneficial effects that: on the one hand, the lifting mechanism adopts the lifting joint group and the lifting rope, and the lifting joint group can stretch out and draw back only by one lifting rope, so that the crown block assembly can be lifted quickly. On the other hand, the driving mechanism is provided with a unidirectional component, and the gear and the meshing mechanism are matched with the unidirectional force application group, so that the winding shaft is limited to rotate only in one direction, and the phenomenon that the crown block component falls down due to sudden reverse rotation of the winding shaft when external force is withdrawn is avoided, and the lifting safety is greatly improved.
Further, the winding shaft is rotatably connected between two vertical plates, a shaft rod parallel to the winding shaft is rotatably connected between the two vertical plates, and the unidirectional limiting teeth are sleeved on the shaft rod and synchronously rotate with the shaft rod. The gear set comprises a large gear sleeved on a winding shaft, the limiting tooth set can be meshed with teeth of the large gear, a handle capable of driving the large gear to rotate is fixed on the winding shaft, and the unidirectional force application set is positioned on the outer side of one vertical plate and can limit the shaft rod to rotate in a reciprocating manner within a small range.
At the moment, the unidirectional limiting teeth are directly meshed with the large gear, so that the rotation direction of the large gear is limited, and the rotation direction of the winding shaft is further limited. The handle is directly driven, the winding shaft is rotated, and winding and unwinding of the lifting rope are realized.
Further, the winding shaft is rotatably connected between two vertical plates, a shaft rod parallel to the winding shaft is rotatably connected between the two vertical plates, and the unidirectional limiting teeth are sleeved on the shaft rod and synchronously rotate with the shaft rod. The gear set comprises a large gear and a small gear with different diameters, the large gear is sleeved on a winding shaft and synchronously rotates with the winding shaft, the small gear is located between the large gear and one-way limiting teeth, the limiting teeth can be meshed with the teeth of the small gear, the small gear is sleeved on a driving shaft which is rotationally connected between two vertical plates, a handle capable of driving the small gear to rotate is fixed on the driving shaft, and the one-way force application set is located on the outer side of one vertical plate and can limit a shaft rod to only rotate in a reciprocating mode in a small range.
At this time, the handle drives the driving shaft to rotate, the pinion rotates synchronously, the pinion drives the large gear to rotate (namely, the winding shaft rotates), the force is saved through the transmission ratio of the large gear and the pinion, and the unidirectional limiting teeth limit the rotation direction of the pinion through limiting the rotation direction of the pinion, so as to limit the rotation direction of the large gear (namely, the rotation direction of the winding shaft).
Furthermore, the unidirectional force application group comprises a spring, one end of the spring is rotationally connected with the vertical plate, the other end of the spring is eccentrically connected on the shaft rod and synchronously rotates with the shaft rod, the connection part of the spring and the shaft rod is eccentrically arranged on the shaft rod, and the spring can only continuously stretch when the limiting tooth group is meshed with the teeth on the gear group, so that the shaft rod can only rotate unidirectionally. The swinging range of the swinging piece, namely the rotation angle of the unidirectional limiting teeth, is limited by the elasticity of the spring.
Further, the unidirectional force application group further comprises a swing piece and an absorption piece, the swing piece is fixed at one end part of the shaft rod and can rotate synchronously with the shaft rod, the absorption piece is fixed on the vertical plate and can absorb the swing piece, one end of the spring is sleeved on the fixing rod I fixedly connected with the swing piece and can rotate around the fixing rod I, the fixing rod I is fixed on the shaft rod, the axis of the fixing rod I is not collinear with the axis of the shaft rod, the other end of the fixing rod I is sleeved on the fixing rod II fixedly connected with the vertical plate and can rotate around the fixing rod II, and the shaft rod is positioned between the fixing rod II and the absorption piece. The spring is an extension spring, and when the swing piece swings between the second fixed rod and the adsorption piece, the swing direction of the swing piece is limited by the spring due to the compression state of the spring; when the axes of the first fixing rod, the second fixing rod and the absorbing member are positioned on the same surface, the swing piece is positioned on one side of the end part of the absorbing member and is absorbed by the absorbing member, and the spring is in a stretched state.
Furthermore, the first fixing rod is positioned at one side of the axis of the shaft rod, the axes of the first fixing rod and the shaft rod pass through the symmetrical center line of the swing piece, and the axes of the second fixing rod, the shaft rod and the absorption piece are positioned on the same surface. When the external force drives the shaft rod to rotate until a single limiting tooth group of the one-way limiting tooth is meshed with the tooth on the upper side of the axis of the pinion, the external force is removed, and at the moment, a triangle is formed between a vertical connecting line between the axis of the second fixing rod and the axis of the shaft rod, a vertical connecting line between the axis of the first fixing rod and the axis of the shaft rod and the axis of the spring (namely, a vertical connecting line between the axis of the second fixing rod and the axis of the first fixing rod), and the spring is changed from a maximum stretching state into a natural state or a small stretching state at the moment.
Furthermore, the spring is an extension spring, when the axes of the first fixing rod, the second fixing rod and the absorbing member are positioned on the same surface, the swing piece is positioned on one side of the end part of the absorbing member and is sucked by the absorbing member, and the spring is in an extension state. At this time, two limit tooth groups of the unidirectional limit tooth basically keep a vertical state, the limit tooth groups at two sides are not contacted with the pinion, the spring stretches to the maximum, the state is a dead point state, and the pinion can rotate at will in clockwise and anticlockwise directions at this time, namely, the winding shaft can rotate positively and reversely.
Further, the driving mechanism further comprises a limiting component capable of limiting the handle to rotate, the limiting component comprises a fixing base, a swinging rod, a limiting piece and a limiting roller, the limiting roller is arranged corresponding to the handle, the fixing base is located below the vertical plate and is fixedly connected with the fixing joint, the swinging rod can swing up and down along the fixing base, the limiting piece is used for fixing the swinging rod and the fixing base, and the limiting roller and the swinging rod swing synchronously and can swing to a position propped against the handle. The limiting assembly improves safety, prevents the crown block assembly from falling due to slipping between the unidirectional limiting teeth and the gear set, and also reduces damage to the unidirectional limiting teeth and the gear set.
Further, the lifting joint group comprises a fixed joint and a plurality of lifting joints capable of moving up and down, the fixed joint is fixed on the base, the driving mechanism is arranged on one side, far away from the lifting joint, of the fixed joint, the crown block component is fixed on one lifting joint far away from the fixed joint, and the lifting joint fixed with the crown block component is fixedly provided with a lifting rope fixing block for fixing the end part of the lifting rope.
In the moving process of the lifting rope, the lifting energy can move up and down along the fixed joint or one lifting joint adjacent to the fixed joint, and the lifting joint group sequentially ascends from the lifting joint far away from the fixed joint to the lifting joint close to the fixed joint.
Further, the lifting joint group further comprises a winding part, the winding part is arranged corresponding to the lifting rope and comprises a plurality of pulleys positioned on the fixed joint and the lifting joint, and one end of the lifting rope sequentially passes through the pulleys and is fixed with the lifting rope fixing block.
The pulleys comprise pulleys A and pulleys B with the same quantity, the pulleys A are arranged at the upper ends of the fixed joints or the lifting joints, the pulleys B are arranged at the lower ends of the fixed joints or the lifting joints, and the pulleys A and the pulleys B are arranged in a staggered mode in the horizontal direction.
The pulley of the lifting joint group forms a movable pulley structure, so that labor saving and manual operation effort saving are realized.
Further, the axes of the pulley A and the pulley B form an included angle. The pulley A and the pulley B on the lifting joint are viewed from the overlook angle in the drawing, so that a plurality of V-shaped structures which are connected end to end, namely a sawtooth structure, are formed, and the lifting rope is convenient to pass through.
Furthermore, the fixed joint and other lifting joints between the fixed joint and the lifting joint fixed with the crown block assembly are respectively provided with a chute, and each lifting joint is fixedly provided with a guide wheel group capable of sliding in the chute. The cooperation of guide pulley group and spout has improved the stability of lifting joint in the lift in-process, provides the direction to the removal of lifting joint.
Furthermore, the lifting joint group is obliquely arranged relative to the vertical surface and is inclined towards one side far away from the crown block assembly from bottom to top, a fixing part which is always horizontally arranged is fixed on the lifting joint group, and the crown block assembly is arranged on the fixing part. When the crown block assembly is lifted, larger moment M1 can be generated due to gravity F1, after the lifting joint group is inclined, part of moment M1 can be counteracted due to the fact that moment M2 generated by the gravity F2 of the lifting joint group and the driving mechanism is opposite to the moment M1, the total moment is reduced, and the reliability and safety of the device can be improved.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
FIG. 2 is a side view of an embodiment of the present invention;
FIG. 3 is a side view of an embodiment of the invention showing an extended lifting joint;
FIG. 4 is a schematic perspective view showing a state of winding up a lifting rope of a driving mechanism according to an embodiment of the present invention;
FIG. 5 is an enlarged view of FIG. 4 at A;
FIG. 6 is a schematic perspective view showing the state of unreeling lifting ropes in a driving mechanism according to an embodiment of the invention;
FIG. 7 is a schematic perspective view of a unidirectional limiting tooth according to an embodiment of the present invention;
FIG. 8 is a side view of a lifting joint in an embodiment of the invention;
FIG. 9 is a schematic view illustrating a structure of an intermediate lifting joint according to an embodiment of the present invention;
FIG. 10 is a schematic view illustrating another angle structure of the middle lifting joint according to an embodiment of the present invention;
FIG. 11 is a top view of a lifting joint according to an embodiment of the present invention;
fig. 12 is a schematic diagram of lifting a lifting section according to an embodiment of the invention.
In the figure:
1. a base; 11. a walking wheel; 12. a bottom plate; 13. a reinforcing part;
2. lifting joint groups; 21. a fixed joint; 22. a lifting joint; 221. a lifting frame; 2211. a chute; 2212. an upper limit column; 2213. a lower limit column; 2221. a mounting plate; 2222. a guide wheel; 23. a lifting rope fixing block; 241. a pulley A; 242. a pulley B;
3. a winding shaft; 31. a lifting rope;
4. a unidirectional component; 41. unidirectional limiting teeth; 411. a cylindrical portion; 412. limiting tooth groups; 42. a unidirectional force application group; 421. a spring; 422. swinging sheets; 423. an absorbing member; 424. a first fixed rod; 425. a second fixing rod; 43. a vertical plate; 44. a shaft lever; 441. a pulling piece; 45. a large gear; 46. a handle; 47. a pinion gear; 48. a drive shaft;
5. a limit component; 51. a fixing seat; 511. a pin hole; 52. swing rod; 53. a limiting piece; 54. a limit roller;
6. a crown block assembly; 61. a fixing frame; 611. a connection part; 612. a fixing part.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.
Referring to fig. 1 and 2, the lifting device of the crown block of the present invention is used for lifting a crown block assembly 6, and comprises a base 1, a lifting mechanism and a driving mechanism, wherein the lifting mechanism is arranged on the base 1, the crown block assembly 6 is fixed on the lifting mechanism, the lifting mechanism can stretch and retract to drive the crown block assembly 6 to move in the vertical direction, and the driving mechanism is used for providing power for lifting of the lifting mechanism.
The lifting mechanism is arranged on the base 1 and comprises a lifting joint group 2 and at least one lifting rope 31, the lifting joint group 2 comprises a fixed joint 21 and a plurality of lifting joints 22 which are sequentially connected, the lifting rope 31 can stretch and retract in the vertical direction in the moving process, and the lifting joints 22 can move up and down along the fixed joint 21 or one lifting joint 22 adjacent to one side close to the fixed joint 21. Wherein the fixed joint 21 is fixedly connected with the base 1, and a lifting joint 22 far away from the fixed joint 21 is used for placing the crown block assembly 6. The driving mechanism is fixed on the fixed joint 21, the driving mechanism comprises a winding shaft 3 and a unidirectional component 4, one end of a lifting rope 31 is fixed on the winding shaft 3, the other end of the lifting rope is fixed on one lifting joint 22 far away from the fixed joint 21, the winding shaft 3 can wind or unwind the lifting rope 31 in the process of rotating along the axis so as to realize the expansion and contraction of the lifting joint group 2, the winding shaft 3 is manually rotated, and the unidirectional component 4 is used for limiting the winding shaft 3 to only rotate unidirectionally in the rotating process.
In this embodiment, the lifting joint group 2 can realize stable lifting of the crown block, and in the rotation process of the winding shaft 3, the winding shaft 3 can only rotate in a first direction for winding under the limitation of the unidirectional component 4 during winding, and the winding shaft 3 can only rotate in a second direction for winding under the limitation of the unidirectional component 4 during unreeling, wherein the first direction is opposite to the second direction. The lifting joint group 2 is prevented from suddenly out of control to generate expansion and contraction, and the crown block assembly 6 is prevented from being damaged.
In one embodiment, referring to fig. 1, the base 1 can walk along the ground, and the walking wheel 11 is arranged on the base 1, so that the whole lifting device can be pushed to move randomly and be carried to any place, and the movement is convenient.
Referring to fig. 1, the base 1 includes a U-shaped bottom plate 12 and a reinforcing portion 13, the U-shaped bottom plate 12 includes two parallel rods and a rod two between the two rods, the lower end of a fixing section 21 of the lifting section group 2 is fixed on the rod two, a lifting section 22 is located at one side of the rod two close to the rod one, and a travelling wheel 11 is arranged at the lower end surface of the rod. The reinforcing part 13 comprises a supporting plate and two walking rods, the supporting plate is abutted against the side wall of the fixed joint 21, which is far away from the lifting joint 22, the walking rods extend along one side of the second rod, which is far away from the first rod, the walking wheels 11 are arranged on the lower end surfaces of the walking rods, and the reinforcing rods which are obliquely arranged are connected between the walking rods and the supporting plate. The structure of base 1 provides stable support to elevating system, reduces the rocking of lifting joint group 2 in flexible in-process, has improved the stability that whole hoisting device removed simultaneously.
Referring to fig. 4, the unidirectional assembly 4 includes at least one unidirectional limiting tooth 41, a gear set and a unidirectional force application set 42, the gear set is connected with the winding shaft 3 and is used for driving the winding shaft 3 to rotate, the gear set is correspondingly arranged with the unidirectional limiting tooth 41, and the unidirectional limiting tooth 41 can rotate along its own axis under the action of external force and can limit the rotation direction of the gear set.
Referring to fig. 7, the unidirectional limiting teeth 41 include a cylindrical portion 411, at least two limiting teeth groups 412 are circumferentially spaced on an outer wall of the cylindrical portion 411, and a certain interval is left between adjacent limiting teeth groups 412 along the circumferential direction of the cylindrical portion 411. Wherein two one-way spacing tooth sets 412 can be meshed with teeth at different positions on the gear set, and the meshing positions of the two one-way spacing tooth sets 412 and the gear set are positioned at two sides of the axis of the gear set meshing gear.
In this embodiment, two limiting teeth sets 412 are provided, so as to meet the limiting requirement. Each spacing tooth group 412 can be engaged with a tooth on the gear set, when the spacing tooth groups are engaged, the unidirectional spacing tooth 41 can only unidirectionally swing under the limit of the unidirectional force application group 42 until the spacing tooth group 412 is separated from the tooth of the gear set, and the unidirectional force application group 42 can pull the unidirectional spacing tooth 41 to rapidly reset, i.e. the unidirectional spacing tooth 41 rapidly reciprocates in a small range, and because the rotation speed of the unidirectional spacing tooth 41 is fast and the rotation angle is small, the gear set is limited to rotate only towards one direction in the reciprocating rotation process of the unidirectional spacing tooth 41, thereby realizing unidirectional rotation of the winding shaft 3.
Referring to fig. 4 and 6, the winding shaft 3 is rotatably connected between two vertical plates 43, the vertical plates 43 are fixedly connected with the fixed joint 21 of the lifting joint group 2, the vertical plates are fixed on one side of the fixed joint 21 far away from the lifting joint 22, a shaft rod 44 parallel to the winding shaft 3 is rotatably connected between the two vertical plates 43, and the unidirectional limiting teeth 41 are sleeved on the shaft rod 44 and synchronously rotate with the shaft rod 44, and the shaft rod 44 and the unidirectional limiting teeth 41 are coaxially arranged.
In one embodiment, the gear set includes a large gear 45 sleeved on the winding shaft 3, the large gear 45 is coaxially arranged with the winding shaft 3 and rotates synchronously, and the limiting gear set 412 of the unidirectional limiting gear 41 can be meshed with the gear of the large gear 45. The winding shaft 3 is fixed with a handle 46 capable of driving the winding shaft to rotate, and at this time, the unidirectional limiting teeth 41 and the large gear 45 are directly meshed to limit the rotation direction of the large gear 45, and further limit the rotation direction of the winding shaft 3. The handle 46 is directly driven to rotate the winding shaft 3, so that winding and unwinding of the lifting rope 31 are realized.
In another embodiment, referring to fig. 4, the gear set further includes a pinion 47 positioned between the large gear 45 and the unidirectional limiting teeth 41, the pinion 47 and the large gear 45 are directly engaged and have a smaller diameter than the large gear 45, and the limiting teeth group 412 of the unidirectional limiting teeth 41 can be engaged with teeth of the pinion 47. At this time, the pinion 47 is sleeved on a driving shaft 48, the driving shaft 48 is rotatably connected between the two vertical plates 43, and the two ends of the driving shaft 48 extend out of the vertical plates 43 to be fixed with a handle 46 which rotates synchronously with the vertical plates. At this time, the handle 46 drives the driving shaft 48 to rotate, the pinion 47 rotates synchronously, the pinion 47 drives the large gear 45 to rotate (i.e. the winding shaft 3 rotates), the force is saved by the transmission ratio of the large gear 45 and the pinion 47, and the unidirectional limiting teeth 41 limit the rotation direction of the large gear 45 (i.e. the rotation direction of the winding shaft 3) by limiting the rotation direction of the pinion 47. In the present embodiment, a gear set formed by combining the large gear 45 and the small gear 47 is adopted, one side of the small gear 47 is meshed with the unidirectional limiting teeth 41 to realize unidirectional rotation, the other side is meshed with the large gear 45, and labor-saving rotation of the winding shaft 3 is realized through a transmission ratio.
Referring to fig. 5, the unidirectional force application group 42 is located outside one vertical plate 43, and includes a spring 421, a swinging piece 422 and an adsorption piece 423, where two ends of the shaft 44 extend out of the vertical plate 43, and the swinging piece 422 is fixed at one end of the shaft 44 and can swing synchronously with rotation of the shaft 44, and the swinging piece 422 swings around the axis of the shaft 44. The absorbing member 423 is fixed to the vertical plate 43 and can absorb the swing piece 422, and the absorbing member 423 may have a cylindrical structure or a rectangular parallelepiped structure, as long as the swing piece 422 can be absorbed. In this embodiment, the absorbing member 423 has a cylindrical structure, so that it is convenient to fix the position and quickly position the center thereof. One end of the spring 421 can be sleeved on a first fixed rod 424 fixedly connected with the swing piece 422, and can rotate around the first fixed rod 424. The other end can be sleeved on a second fixing rod 425 fixedly connected with the vertical plate 43 and can rotate around the second fixing rod 425. Of course, instead of the first fixing rod 424 and the second fixing rod 425, the protruding part for the spring 421 to be sleeved and connected may be directly arranged on the vertical plate and the swing piece. The shaft 44 is located between the second fixing rod 425 and the adsorbing member 423, the first fixing rod 424 is located at one side of the axis of the shaft 44, the axis of the first fixing rod 424 is not collinear with the axis of the shaft 44, and the axes of the first fixing rod 424 and the shaft 44 both pass through the symmetrical center line of the swinging piece 422. The axis of the second fixing rod 425 and the shaft 44 and the center line of the absorbing member 423 are located on the same plane, i.e. the intersection point of the axis of the second fixing rod 425 and the shaft 44 and the center line of the absorbing member 423 and the same vertical plane is a straight line.
The spring 421 is a tension spring 421, and when the spring 421 is not loaded (i.e., in a natural state), the coils of the tension spring 421 are generally tightly connected without a gap, and the spring 421 cannot be compressed again under the action of an external force. When the swinging piece 422 swings, the spring 421 can stretch or retract, and when the swinging piece 422 swings between the adsorption piece 423 and the second fixing rod 425 until the spring 421 is in a natural state, the spring 421 cannot be compressed at this time, so that the swinging piece 422 can only continue swinging towards the direction of the stretching spring 421, namely, the shaft lever 44 can only swing unidirectionally at this time, and further, unidirectional rotation of the winding shaft 3 at this time is limited. Of course, the swing piece 422 can make the spring 421 have a small-amplitude extension due to the suction force of the suction piece 423 or the limitation of the meshing position of the unidirectional limiting teeth 41 and the pinion, so as to ensure that the unidirectional limiting teeth 41 have a small-amplitude rotation distance, ensure that the unidirectional limiting teeth 41 do not pass the meshing point in the rotation process, and ensure that the unidirectional limiting teeth 41 rotate along the rotation direction under the pushing of the gear set and reversely rotate under the tension of the spring 421, and the unidirectional limiting teeth 41 swing reciprocally in the process.
In one embodiment, the absorbing member 423 is a magnet, the swing piece 422 is a metal member that can be absorbed by the magnet, and the swing piece 422 can be absorbed at an end of the absorbing member 423 and can also move along the end of the absorbing member 423 to be separated from the absorbing member 423. The swing piece 422 is parallel to the vertical plate 43, and the minimum vertical distance between the swing piece 422 and the vertical plate 43 is the thickness of the absorbing piece 423 in the axial direction.
When the first fixing rod 424, the second fixing rod 425, and the center line of the adsorbing member 423 are located on the same plane, the swing piece 422 is located on one side of the end of the adsorbing member 423 and is sucked by the adsorbing member 423. At this time, the two limiting teeth 412 of the unidirectional limiting teeth 41 are kept in a substantially vertical state, the two limiting teeth 412 are not in contact with the pinion 47, the spring 421 is stretched to the maximum, the state is a dead point state, and the pinion 47 can be rotated at will in the clockwise and counterclockwise directions at this time, that is, the winding shaft 3 can be rotated forward and backward.
Referring to fig. 4, when the external force drives the shaft 44 to rotate counterclockwise along the arrow in the drawing until one single limiting tooth set 412 of the single limiting tooth 41 is engaged with the tooth on the upper side of the axis of the pinion 47, the external force is removed, and a triangle is formed between the vertical line between the axis of the second fixing rod 425 and the axis of the shaft 44, the vertical line between the axis of the first fixing rod 424 and the axis of the shaft 44, and the axis of the spring 421 (i.e., the vertical line between the axis of the second fixing rod 425 and the axis of the first fixing rod 424), and the spring 421 is changed from the maximum stretching state to the natural state or the small stretching state, and the single limiting tooth 41 cannot rotate counterclockwise or can only rotate counterclockwise by a small extent due to the limitation of the spring 421. In this embodiment, when the swing rod 52 is located at a designated position between the second fixing rod 425 and the absorbing member 423, the spring 421 is in a small-amplitude tensile state, at this time, the shaft 44 has a certain rotation force in the counterclockwise direction, and the unidirectional limiting teeth 41 have only a small counterclockwise rotation amplitude, and no engagement point is left when rotating counterclockwise. In this way, the pinion 47 is meshed with the unidirectional limiting teeth 41, the pinion 47 can only rotate anticlockwise, the large gear 45 is driven to rotate clockwise, the lifting rope 31 is wound on the winding shaft 3, and the crown block assembly 6 is lifted.
Similarly, referring to fig. 6, when the external force drives the shaft 44 to rotate clockwise until the other single limiting tooth set 412 of the single limiting tooth 41 is meshed with the tooth of the pinion 47 with the lower axis, the swinging piece 422 passes through the dead center clockwise at this time, so that the spring 421 is restored to the small-amplitude stretching state close to the natural stretching state from the maximum stretching state, the clockwise rotation amplitude of the single limiting tooth 41 is very small, so that the pinion 47 can only rotate clockwise, and the large gear 45 is driven to rotate anticlockwise, so that the lifting rope 31 on the winding shaft 3 is unreeled, and the crown block assembly 6 descends.
In this embodiment, referring to fig. 4, in order to facilitate the rotation of the driving shaft lever 44, a pulling piece 441 is fixed at one end of the shaft lever 44 away from the swinging piece 422, and the pulling piece 441 is manually pulled to realize the rotation of the shaft lever 44, so as to drive the rotation of the unidirectional limiting teeth 41 and the swinging of the first fixing rod 424 and the swinging piece 422.
In one embodiment, only one unidirectional limiting tooth 41 is provided, however, in one embodiment, two or more unidirectional limiting teeth 41 may be provided, and the gear sets correspond to the unidirectional limiting teeth 41.
The cooperation of the unidirectional limiting teeth 41, the gear set and the unidirectional force application group 42 realizes that the winding shaft 3 can only rotate clockwise when rotating clockwise; when the handle 46 stops rotating, the unidirectional limiting teeth 41 are fixed, the gear set is limited to rotate, the winding shaft 3 is further limited to rotate, sudden falling of the crown block assembly 6 in the lifting process is avoided, and safety is improved.
In one embodiment, to further improve safety, the crown block assembly 6 is prevented from falling due to slipping between the one-way stop tooth 41 and the gear set, and damage to the one-way stop tooth 41 and the gear set is reduced, and the drive mechanism further includes a stop assembly 5. The stop assembly 5 serves to define the position of the handle 46 and thus the rotation of the winding shaft 3.
Referring to fig. 4, the limiting assembly 5 includes a fixed base 51, a swing link 52, a limiting member 53, and a limiting roller 54 disposed corresponding to the handle 46. The fixing seat 51 is located below the vertical plate 43 and is fixedly connected with the fixing joint 21, the swing rod 52 can swing up and down along the fixing seat 51, the limiting piece 53 is used for fixing the swing rod 52 and the fixing seat 51, and the limiting roller and the swing rod 52 synchronously swing and can swing to a position abutting against the handle 46. When the stopper roller abuts the handle 46, the rotation of the handle 46 can be restricted.
Referring to fig. 4, in this embodiment, the handle 46 is rotated counterclockwise, so that the crown block assembly 6 is lifted, and the unidirectional limiting teeth 41 can limit the pinion 47 to rotate clockwise, i.e. limit the handle 46 to rotate clockwise, and when the handle 46 is released, the unidirectional limiting teeth 41 limit the lifted handle 46. However, the gear is limited by meshing the gears, so that the damage to the gears is large, the weight of the crown block assembly 6 is large, the lifting mechanism is lowered by gravity, the handle 46 is reversed, and the gears are damaged easily. At this time, after lifting the crown block assembly 6, the swing rod 52 is swung upward, the position of the swing rod 52 is fixed by the stopper 53, the stopper roller 54 abuts against one of the handles 46, the handle 46 is prevented from rotating clockwise, and the handle 46 is restricted and fixed.
Of course, during the lowering of the crown block assembly 6, the swing link 52 may also be driven to a position and contact the handle 46, preventing the handle 46 from rotating counterclockwise, allowing the crown block assembly 6 to be lowered to a specific position. The unidirectional rotation and fixation of the winding shaft 3 can be realized by only relying on the unidirectional limiting teeth 41, the gear set and the unidirectional force application group 42, and the setting of the limiting assembly 5 only reduces the abrasion of the unidirectional limiting teeth 41 and the gear set.
In one embodiment, the fixing base 51 is provided with a circular arc-shaped channel, and the swing rod 52 can swing along the channel. The limiting piece 53 is a bolt capable of penetrating through the swing rod 52, as shown in fig. 6, the fixed seat 51 is provided with a plurality of pin holes 511 which are arranged in a circular arc shape, the bolt can be inserted into the pin holes 511 and penetrate into the fixed holes on the swing rod 52, and the circle center of the circular arc shape is overlapped with the hinging point of the swing rod 52 and the fixed seat 51. When the bolt passes through the pin hole 511 and the fixing hole of the swing rod 52, the swing rod 52 can be limited, and the swing rod 52 and the fixing seat 51 can be fixed.
The fixed joint 21 and the lifting joint 22 of the lifting joint set 2 are parallel to each other, so that the lifting joint set 2 forms a rectangular structure when retracted. In one embodiment, the lifting joint 2 is inclined with respect to the vertical and from bottom to top towards the side remote from the crown block assembly 6, as shown in figures 2 and 3. The lifting joint 2 forms an angle θ of more than 90 degrees with the horizontal plane of the base 1, while the crown block assembly 6 remains parallel to the horizontal plane of the base 1. When the crown block assembly 6 is lifted, a larger moment M1 is generated due to the gravity F1, after the lifting joint group 2 is inclined, a part of moment M1 can be counteracted due to the fact that the moment M2 generated by the gravity F2 of the lifting joint group 2 and the driving mechanism is opposite to the moment M1, so that the total moment is reduced, and the reliability and the safety of the device can be improved.
Referring to fig. 8, the crown block assembly 6 is connected with the lifting joint 2 through the fixing frame 61, the fixing frame 61 includes a connecting portion 611 and a fixing portion 612 connected at an end, the fixing portion 612 is always parallel to a horizontal plane and used for placing the crown block assembly 6, and the connecting portion 611 is parallel to the lifting joint 2 and fixed on the lifting joint 2. Fixed portion 612 and connecting portion 611 form an included angle of 180- θ.
The lower end of the fixed joint 21 is fixed on the base 1, and the fixed frame 61 is fixed on the upper end of one lifting joint 22 far away from the fixed joint 21, so that the maximum distance lifting of the crown block assembly 6 can be realized.
Referring to fig. 11, the lifting joint set 2 further includes a winding part, the winding part includes pulleys located on the fixing joint 21 and the lifting joint 22, the lifting joint 22 fixed with the fixing frame 61 is fixed with a lifting rope fixing block 23 for fixing the end of the lifting rope 31, and the lifting rope 31 is fixedly connected with the lifting rope fixing block 23 sequentially through the pulleys of the fixing joint 21 and the lifting joint 22. At this time, the other end of the lifting rope 31 is pulled, and the lifting rope 31 drives the lifting joint 22 to lift through the winding part, so that the lifting joint group 2 stretches out and draws back.
One of the lifting joints 22 to which the fixing frame 61 is fixed is defined as a distal lifting joint to which the lifting rope fixing block 23 for fixing the end of the lifting rope 31 is fixed. The lifting joint between the fixed joint 21 and the tail end lifting joint is a middle lifting joint, sliding grooves 2211 are formed in the fixed joint 21 and the middle lifting joint, and each lifting joint 22 is fixedly provided with a guide wheel group capable of sliding in the sliding groove 2211. The cooperation of the guide wheel group and the sliding groove 2211 improves the stability of the lifting joint 22 in the lifting process, and provides guidance for the movement of the lifting joint 22.
Referring to fig. 10, two sliding grooves 2211 are symmetrically arranged, and the guide wheel set includes guide wheels 2222 which are arranged corresponding to the sliding grooves 2211 and can slide in the sliding grooves 2211, wherein the sliding grooves 2211 are C-shaped grooves, and the guide wheels 2222 are embedded in the sliding grooves 2211 to slide. The slide groove 2211 limits the guide wheel set in two vertical directions of the horizontal plane, so that the position of the lifting joint 22 in the horizontal plane is limited, and the lifting joint 22 is prevented from being deviated in the lifting process.
In one embodiment, to limit the lifting distance of the lifting joint 22, the upper and lower ends of the sliding groove 2211 are respectively fixed with the upper limit post 2212 and the lower limit post 2213, and when the guide wheel assembly of one lifting joint 22 abuts against the upper limit post 2212 of the adjacent lifting joint 22 or the fixed joint 21, the lifting joint 22 cannot move upwards; when the guide wheel assembly of one lifting joint 22 abuts against the lower limit post 2213 of the adjacent lifting joint 22 or the fixed joint 21, the lifting joint 22 cannot move down continuously.
Referring to fig. 11, the winding portions are provided corresponding to the lift cords 31, and one lift cord 31 corresponds to one winding portion. The winding part comprises a plurality of pulleys, the pulleys are rotationally connected with the fixed joint 21 and the lifting joint 22, the pulleys can rotate along the axis of the pulleys, and annular grooves for embedding the lifting ropes 31 are axially formed in each pulley. The pulleys comprise pulleys A241 and pulleys B242 with the same number, the pulleys A241 are arranged at the upper end of the fixed joint 21 or the lifting joint 22, the pulleys B242 are arranged at the lower end of the fixed joint 21 or the lifting joint 22, and the pulleys A241 and the pulleys B242 are arranged in a staggered manner in the horizontal direction, namely, one pulley B242 is arranged between the adjacent pulleys A241. The fixed joint 21 is provided with a pulley A241 at the upper end, the upper and lower ends of the middle lifting joint are respectively provided with a pulley A241 and a pulley B242, and the tail lifting joint is provided with a pulley B242 at the lower end. The axes of the pulley B242 are parallel to each other, the pulley a241 on the lifting joint 22 is parallel to each other, and the axes of the pulley a241 and the pulley B242 on the lifting joint 22 form an included angle, so that the pulley a241 and the pulley B242 on the lifting joint 22 form a plurality of V-shaped structures connected end to end, i.e. zigzag structures, when viewed from the top view in the drawing.
Referring to fig. 9 and 10, a schematic structural diagram of an intermediate lifting joint is shown, which includes a lifting frame 221 and a guide wheel set on one side of the lifting frame 221, the lifting frame 221 includes a rectangular lifting plate, two L-shaped guide plates are disposed on one side of the lifting plate away from the guide wheel set along the length direction, and a sliding groove 2211 is defined between the guide plates and the lifting plate. The guide wheel group comprises a mounting plate 2221 fixed on the lifting plate, two guide wheels 2222 are respectively connected to two sides of the mounting plate 2221 in a rotating mode, the four guide wheels 2222 form a rectangular structure, the width of the rectangular structure formed by the guide wheels 2222 is smaller than that of the lifting plate, and therefore the guide wheels 2222 can be embedded into the sliding grooves 2211 of the adjacent lifting sections 22 or the fixed sections 21.
The pulley A241 is arranged at the middle position of the upper end of the lifting plate, the axis of the pulley A241 is obliquely arranged, two ends of the pulley A241 respectively partially protrude out of the thickness direction of the lifting plate, namely, the pulley A241 obliquely penetrates through the lifting plate and respectively protrudes towards one side of the guide wheel group and one side far away from the guide wheel group. Pulley B242 is disposed at the middle position of the lower end of the lifting plate and is located on the surface of the lifting plate near the guide wheel set. Thus, the lifting rope 31 enters from the pulley B242 on the side of the lifting plate close to the pulley group, then passes out from the side of the pulley A241 on the lifting plate far away from the pulley group, and then enters the pulley B242 of the adjacent middle lifting joint or the end lifting joint.
The fixed joint 21 and the lifting frame 221 of the middle lifting joint have the same structure, but the guide wheel group and the pulley B242 are not required to be arranged. Compared with the middle lifting joint, the end lifting joint does not need a guide plate and a pulley A241, and other structures are the same.
The lifting rope 31 at one end of the fixed joint 21 is connected with the winding shaft 3 on the driving mechanism, then sequentially passes through the pulley A241 of the fixed joint 21, the pulleys B242 of the plurality of middle lifting joints and the pulley A241, then upwards passes out of the pulley B242 at the lower end of the tail lifting joint, and the other end of the lifting rope 31 is fixed on the lifting rope fixing block 23 at the upper end of the tail lifting joint. At this time, referring to fig. 3, when the driving handle 46 rotates counterclockwise, the lifting rope 31 is wound up, and the lifting joint group 2 is stretched; when the drive handle 46 rotates clockwise, the lifting rope 31 is unreeled, and the lifting joint group 2 is contracted. Due to the adoption of the multi-section lifting joint 22 mechanism, the lifting joint group 2 is pulled to stretch by the lifting rope 31, and the lifting joint group 2 can be pulled to lift only by applying a small force to the lifting rope 31, so that labor-saving operation is realized.
Referring to fig. 8 and 12, in the present embodiment, the lifting joint 22 is provided with three joints, namely, a lifting joint one, a lifting joint two and a lifting joint three, wherein the lifting joint one is a terminal lifting joint connected with the fixing frame 61, and the lifting joint two and the lifting joint three are intermediate lifting joints.
At this time, referring to fig. 12, the pulley B242 corresponds to a movable pulley, and fa= (g1+g)/2, where Fa is the tension of the lifting rope 31 between the lifting joints two, G1 is the weight of all parts on the lifting joint one, and G is the weight of the crown block assembly 6 (including the fixing frame 61) fixed on the lifting joint one. Fb=fa+g2/2, fb is the tension of the lifting rope 31 between the lifting joints three, and G2 is the weight of the lifting joint two. Fc=fb+g3/2, fc is the tension of the lifting rope 31 at the end of the fixed knot 21, G3 is the weight of lifting knot three, where g2=g3. From the formulas for Fa, fb and Fc: fc > Fb > Fa. Therefore, when the lifting rope 31 is wound, the lifting joint I and the lifting joint III rise step by step, the lifting joint I rises firstly, the lifting joint I rises to the highest point, then the lifting joint II carries the lifting joint I to rise synchronously, and after the lifting joint II rises to the highest point, the lifting joint III drives the lifting joint I and the lifting joint II to rise synchronously. The lifting joints 22 are lifted step by step, and the lifting joints 22 far from the fixed joints 21 are lifted to one lifting joint 22 close to the fixed joints 21 in sequence, so that the whole lifting joint group 2 is more labor-saving to extend.
In the lifting process of the crown block assembly 6 of the embodiment, the crown block assembly 6 is first fixed on the fixing frame 61, and the lifting joint group 2 is in a retracted state. After the crown block assembly 6 is fixed, the pulling tab 441 is manually pulled counterclockwise until one single limiting tooth set 412 of the one-way limiting teeth 41 is engaged with the tooth on the upper side of the axis of the pinion 47. Then the handle 46 is driven to rotate anticlockwise, the shaft lever 44 rotates anticlockwise, the pinion 47 and the large gear 45 are meshed, the large gear 45 (namely the winding shaft 3) rotates clockwise, the lifting rope 31 is wound, at the moment, the one-way limiting teeth 41 can only rotate anticlockwise by a small extent under the limit of the spring 421 of the one-way force application group 42, the pinion 47 can only rotate anticlockwise, even if the external force on the handle 46 is removed, the pinion 47 cannot rotate clockwise under the limit of the one-way limiting teeth 41, and the crown block assembly 6 can be limited at the height for installation. In the winding process, the lifting rope 31 drives the lifting joints 22 to sequentially ascend through the pulleys to realize the extension of the lifting joint group 2, and the lifting of the crown block assembly 6 with high weight can be realized by applying a small force to the end part of the steel wire rope to realize labor saving.
The lifting joint 2 is in an extended state during the lowering of the crown block assembly 6. The paddle 441 is manually shifted counter-clockwise until the other single limiting tooth set 412 of the single limiting tooth 41 engages with the tooth of the pinion 47 that is offset axially. Then the handle 46 is driven to rotate clockwise, the shaft lever 44 rotates clockwise, the gear wheel 45 (namely the winding shaft 3) rotates anticlockwise through the engagement of the pinion 47 and the gear wheel 45, the lifting rope 31 is unreeled, at this time, the pinion 47 can only rotate clockwise due to the fact that the unidirectional limiting teeth 41 rotate only by a small extent under the limit of the springs 421 of the unidirectional force application group 42, even if the external force on the handle 46 is removed, the pinion 47 cannot rotate clockwise under the limit of the unidirectional limiting teeth 41, and the crown block assembly 6 can be limited at any height. In the unreeling process, the lifting rope 31 drives the lifting joints 22 to descend sequentially through the pulleys, so that the lifting joint group 2 is contracted.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and to implement the same, but are not intended to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (11)
1. The utility model provides a crown block hoisting device for the lift of crown block subassembly, includes base, elevating system and actuating mechanism, elevating system sets up on the base and drives the crown block subassembly that sets up above that and go up and down, actuating mechanism sets up on elevating system and is used for providing power for elevating system's lift, its characterized in that: wherein the method comprises the steps of
The lifting mechanism comprises a lifting joint group and at least one lifting rope, and the lifting joint group can realize the stretching in the vertical direction in the moving process of the lifting rope;
the driving mechanism comprises a winding shaft and a unidirectional component, one end of the lifting rope is fixed on the winding shaft, the winding shaft can wind or unwind the lifting rope in the process of rotating along the axis so as to realize the expansion and the contraction of the lifting joint group, and the unidirectional component is used for limiting the winding shaft to only rotate in one direction in the process of rotating;
the unidirectional assembly comprises at least one unidirectional limiting tooth, a unidirectional force application group and a gear set corresponding to the unidirectional limiting tooth, wherein the gear set is connected with the winding shaft and used for driving the winding shaft to rotate, and the unidirectional limiting tooth can rotate along the axis of the unidirectional force application group under the action of external force and can limit the rotation direction of the gear set;
The unidirectional limiting teeth comprise at least two limiting teeth groups which are distributed along the circumferential direction and are arranged at intervals, the unidirectional limiting teeth can rotate along the axis of the unidirectional limiting teeth under the action of external force to switch the two limiting teeth groups to be respectively meshed with teeth at two different positions on the gear set, when one limiting teeth group is meshed with the gear set, the unidirectional limiting teeth can only unidirectionally swing until the limiting teeth group is separated from teeth of the gear set under the limitation of the unidirectional force application group, and the unidirectional force application group can pull the unidirectional limiting teeth to reset;
the winding shaft is rotationally connected between the two vertical plates, a shaft rod which is parallel to the winding shaft is rotationally connected between the two vertical plates, and the unidirectional limiting teeth are sleeved on the shaft rod and synchronously rotate with the shaft rod;
the unidirectional force application group comprises a spring, a swing piece and an absorption piece, wherein the swing piece is fixed at one end part of the shaft rod and can swing along the axis of the shaft rod, the absorption piece is fixed on the vertical plate and can absorb the swing piece, one end of the spring is rotationally connected with the vertical plate, the other end of the spring is rotationally connected with the swing piece and the connecting part of the spring and the swing piece is eccentrically arranged with the rotating shaft, the shaft rod is positioned between the connecting part of the spring and the vertical plate and the absorption piece, and the spring can only continuously stretch when the limiting tooth group is meshed with teeth on the gear group, so that the shaft rod can only unidirectionally rotate at the moment;
When the swing piece swings to the connection position of the spring and the vertical plate and between the adsorption piece, the swing direction of the swing piece is limited by the compression state of the spring.
2. The overhead travelling crane lifting arrangement according to claim 1, wherein: the gear set comprises a large gear sleeved on a winding shaft, the limiting tooth set can be meshed with teeth of the large gear, a handle capable of driving the large gear to rotate is fixed on the winding shaft, and the unidirectional force application set is positioned on the outer side of one vertical plate and can limit the shaft rod to only rotate in a reciprocating mode.
3. The overhead travelling crane lifting arrangement according to claim 1, wherein: the gear set comprises a large gear and a small gear with different diameters, the large gear is sleeved on a winding shaft and synchronously rotates with the winding shaft, the small gear is located between the large gear and one-way limiting teeth, the limiting teeth can be meshed with the teeth of the small gear, the small gear is sleeved on a driving shaft which is rotationally connected between two vertical plates, a handle capable of driving the small gear to rotate is fixed on the driving shaft, and the one-way force application set is located on the outer side of one vertical plate and can limit a shaft lever to only rotate in a reciprocating mode.
4. The overhead travelling crane lifting arrangement according to claim 1, wherein: one end of the spring is sleeved on a first fixed rod fixedly connected with the swing piece and can rotate around the first fixed rod, the first fixed rod is fixed on the shaft rod, the axis of the first fixed rod is not collinear with the axis of the shaft rod, and the other end of the spring is sleeved on a second fixed rod fixedly connected with the vertical plate and can rotate around the second fixed rod;
When the axes of the first fixing rod, the second fixing rod and the absorbing member are positioned on the same surface, the swing piece is positioned on one side of the end part of the absorbing member and is absorbed by the absorbing member, at the moment, the spring is in a stretching state, and the spring is a stretching spring.
5. The overhead travelling crane lifting assembly of claim 4 wherein: the first fixing rod is positioned on one side of the axis of the shaft rod, the axes of the first fixing rod and the shaft rod pass through the symmetrical center line of the swing piece, and the axes of the second fixing rod, the shaft rod and the absorption piece are positioned on the same surface.
6. A crown block lifting device according to claim 2 or 3, characterized in that: the driving mechanism further comprises a limiting component capable of limiting the rotation of the handle, the limiting component comprises a fixing seat, a swinging rod, a limiting piece and a limiting roller, the limiting roller is arranged corresponding to the handle, the fixing seat is located below the vertical plate and fixedly connected with the lifting joint group, the swinging rod can swing up and down along the fixing seat, the limiting piece is used for fixing the swinging rod and the fixing seat, and the limiting roller and the swinging rod synchronously swing and can swing to a position propped against the handle.
7. The overhead travelling crane lifting assembly according to any one of claims 1-5, wherein: the lifting joint group comprises a fixed joint and a plurality of lifting joints capable of moving up and down, the fixed joint is fixed on the base, the driving mechanism is arranged on one side, far away from the lifting joint, of the fixed joint, the crown block assembly is fixed on one lifting joint far away from the fixed joint, and a lifting rope fixing block for fixing the end part of the lifting rope is fixed on the lifting joint fixed with the crown block assembly;
In the moving process of the lifting rope, the lifting energy can move up and down along the fixed joint or one lifting joint adjacent to the fixed joint, and the lifting joint group sequentially ascends from the lifting joint far away from the fixed joint to the lifting joint close to the fixed joint.
8. The overhead travelling crane lifting assembly of claim 7 wherein: the lifting joint group further comprises a winding part, the winding part is arranged corresponding to the lifting rope, the winding part comprises a plurality of pulleys positioned on the fixed joint and the lifting joint, and one end of the lifting rope sequentially passes through the pulleys and is fixed with the lifting rope fixing block;
the pulleys comprise pulleys A and pulleys B with the same quantity, the pulleys A are arranged at the upper ends of the fixed joints or the lifting joints, the pulleys B are arranged at the lower ends of the fixed joints or the lifting joints, and the pulleys A and the pulleys B are arranged in a staggered mode in the horizontal direction.
9. The overhead travelling crane lifting assembly of claim 8 wherein: the axes of the pulley A and the pulley B form an included angle.
10. The overhead travelling crane lifting assembly of claim 8 wherein: the fixed knot, be located other lifting knot between fixed knot and the lifting knot that is fixed with the overhead traveling crane subassembly and all be provided with the spout on, every all be fixed with the guide pulley group that can slide in the spout on the lifting knot.
11. The overhead travelling crane lifting arrangement according to claim 1, wherein: the lifting joint group is obliquely arranged relative to the vertical surface, and is inclined towards one side far away from the crown block assembly from bottom to top, a fixing part which is always horizontally placed is fixed on the lifting joint group, and the crown block assembly is arranged on the fixing part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310530051.4A CN116239059B (en) | 2023-05-12 | 2023-05-12 | Crown block lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310530051.4A CN116239059B (en) | 2023-05-12 | 2023-05-12 | Crown block lifting device |
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| CN116239059A CN116239059A (en) | 2023-06-09 |
| CN116239059B true CN116239059B (en) | 2023-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310530051.4A Active CN116239059B (en) | 2023-05-12 | 2023-05-12 | Crown block lifting device |
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| JP2021109766A (en) * | 2020-01-15 | 2021-08-02 | 株式会社ピカコーポレイション | Lifting/lowering apparatus |
| CN217921216U (en) * | 2022-07-28 | 2022-11-29 | 新至汇德机械科技有限公司 | Self-locking mechanism of hand winch |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012125489A2 (en) * | 2011-03-11 | 2012-09-20 | LiftSmart, LLC | Cam driven wedge braking system for multi-stage lifts |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES1064018U (en) * | 2006-10-19 | 2007-01-16 | Jordi Salvat Barenys | Manual load elevator (Machine-translation by Google Translate, not legally binding) |
| CN202054557U (en) * | 2011-04-01 | 2011-11-30 | 铜陵洋泰机械制造有限责任公司 | Hand-operated winch |
| CN202465165U (en) * | 2012-03-13 | 2012-10-03 | 杭州洛基机械制造有限公司 | Double-ratchet manual type winch |
| CN203236391U (en) * | 2013-01-14 | 2013-10-16 | 薛兆三 | Ratchet wrench |
| CN209098077U (en) * | 2018-11-09 | 2019-07-12 | 青岛海能五金制品有限公司 | Double tooth one-directional rotation binding winches |
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| Publication number | Publication date |
|---|---|
| CN116239059A (en) | 2023-06-09 |
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