Crown block lifting device and crown block system

Abstract

The invention relates to the technical field of wafer processing equipment, and provides a crown block lifting device and a crown block system.The crown block lifting device comprises a mounting bottom plate, a movable track, a lifting mechanism and a limiting assembly, the movable track comprises a movable track profile and a track bottom plate, and the movable track profile is used for being in butt joint with an upper-layer fixed track of a maintenance area; the lifting mechanism comprises a lifting belt and a lifting driving assembly; the lifting driving assembly is used for driving the lifting belt to drive the movable track to lift; the limiting assembly comprises a plug pin mechanism and a limiting column, the limiting column is fixed to the mounting bottom plate, a through hole suitable for the limiting column to penetrate through is formed in the rail bottom plate, when the movable rail profile is in butt joint with the upper-layer fixed rail, the limiting column penetrates through the through hole, and a plug pin of the plug pin mechanism is matched with a plug pin base mounted on the rail bottom plate to limit the movable rail. The butt joint precision and stability of the movable track and the upper layer fixed track can be improved, the reliability is higher, and the equipment cost is lower.

Description

Technical Field

[0001] The present invention relates to the technical field of wafer processing equipment, and in particular to an overhead crane lifting device and an overhead crane system. Background Art

[0002] When a crane breaks down and needs to be repaired, it needs to be transported to the ground for repair. When the repair is completed, the crane is lifted to the required height and enters the upper fixed track of the maintenance area. Most of the current crane lifting devices place the crane on the movable track, and lift the movable track and dock it with the upper fixed track of the maintenance area to increase the height of the crane. Among them, the mechanism used to lift the movable track is mostly a module structure. However, the module structure to lift the height of the crane is not suitable for long-distance transportation, such as transportation heights exceeding 4m, because the longer the module, the more difficult the processing, the more expensive the price, which will lead to an increase in the overall cost of the equipment; in addition, since the movable track needs to be docked with the upper fixed track, in order to ensure the docking accuracy, an electrically controlled docking locking mechanism will be set between the movable track and the upper fixed track, which is costly, and the docking locking mechanism is easily affected by the vibration of the movable track and / or the upper fixed track, resulting in electronic control failure and poor stability. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides an overhead crane lifting device and an overhead crane system, which can improve the accuracy and stability of docking between the movable track and the upper fixed track, and has higher reliability and lower equipment cost.

[0004] The technical solution adopted by the present invention is as follows: The embodiment of the present invention provides an overhead crane lifting device, comprising: a mounting base plate, a movable track, a lifting mechanism and a limiting assembly, wherein the movable track comprises a movable track profile and a track base plate, the movable track profile is used to dock with the upper fixed track of the maintenance area, and the track base plate and the movable track profile are fixedly connected through a track bracket; the lifting mechanism comprises a lifting belt and a lifting drive assembly, the first end of the lifting belt is mounted on the movable track, the second end of the lifting belt is connected to the lifting drive assembly, and the lifting drive assembly is used to drive the lifting belt to release or retract, so that the lifting belt drives the movable track to rise and fall; the limiting assembly comprises a latch mechanism and a limiting column, the latch mechanism comprises a latch mounted on the mounting base plate and a latch seat mounted on the track base plate, the limiting column is fixed on the mounting base plate, and a through hole suitable for the limiting column to pass through is opened on the track base plate, when the movable track profile is docked with the upper fixed track, the limiting column passes through the through hole, and the latch cooperates with the latch seat to limit the movable track.

[0005] In addition, the overhead crane lifting device proposed in the present invention may also have the following additional technical features: According to one embodiment of the present invention, the lifting drive assembly includes a lifting reel and a lifting reel servo motor, the second end of the lifting belt is wound around the lifting reel, and the lifting reel servo motor is used to drive the lifting reel to rotate counterclockwise or clockwise to drive the release or recovery of the lifting belt.

[0006] According to one embodiment of the present invention, the lifting mechanism also includes a synchronous belt, a synchronous wheel, a coupling and a driving shaft. The first end of the synchronous belt is installed on the movable track, and the second end of the synchronous belt is wound around the synchronous wheel. The coupling is used to connect the shaft of the lifting reel with one end of the driving shaft, and the other end of the driving shaft is connected to the shaft of the synchronous wheel. When the lifting reel servo motor drives the lifting reel to rotate, the coupling drives the synchronous wheel on the driving shaft to rotate, and the synchronous belt and the lifting belt are released or recovered synchronously.

[0007] According to one embodiment of the present invention, the latch includes an electric push rod and a plug plate, the electric push rod is used to drive the plug plate to extend or retract, and the latch seat includes two latch shafts, and a gap suitable for inserting the plug plate is formed between the two latch shafts.

[0008] According to one embodiment of the present invention, an identification plate is provided on the latch seat, and the limit assembly further includes a height sensor, and the height sensor is used to detect the height of the identification plate. When the identification plate reaches a preset height, the electric push rod drives the plug plate to extend out and insert into the gap.

[0009] According to one embodiment of the present invention, it also includes: a Litz wire opening and closing mechanism, the Litz wire opening and closing mechanism includes a guide rail, an opening and closing assembly, a clamp and a Litz wire fixing plate, the guide rail is installed on the mounting base plate, the opening and closing assembly is connected to the Litz wire fixing plate, the clamp is used to drive the opening and closing assembly to move along the guide rail so that the opening and closing assembly drives the Litz wire fixing plate to open or close, and the Litz wire is fixedly arranged on the Litz wire fixing plate.

[0010] According to one embodiment of the present invention, the opening and closing assembly includes a guide rail slider, a push plate and a connecting beam, the guide rail slider is slidably set on the guide rail, one end of the push plate is fixed on the connecting beam, the push plate is connected to the clamp so that the clamp drives the push plate to move forward and backward, one end of the connecting beam is fixedly connected to the guide rail slider, and the other end of the connecting beam is fixedly connected to the Litz wire fixing plate.

[0011] According to one embodiment of the present invention, the clamp includes a screw, a clamping rod and a driver, the screw is connected to the clamping rod, the screw is fixedly connected to the push plate, and the driver is used to drive the clamping rod to reciprocate along its own axis, and drive the push plate to move forward and backward through the screw.

[0012] According to one embodiment of the present invention, it also includes: a lever and a self-resetting blocking mechanism, wherein the lever is fixedly mounted on the mounting base plate; the self-resetting blocking mechanism includes a flip bracket, a flip shaft, a flip block, a torsion spring and a blocking plate, the flip bracket is mounted on the side of the movable track profile, the flip shaft is arranged on the flip bracket, the flip block is rotationally connected to the flip shaft, the torsion spring is arranged at the rotation connection of the flip block, the flip block is connected to the blocking plate, when the self-resetting blocking mechanism is in the first state, the flip block is used to limit the overhead travelling vehicle to the movable track profile, when the lever moves the blocking plate, the blocking plate drives the flip block to flip synchronously, so that the self-resetting blocking mechanism is in the second state.

[0013] In addition, to achieve the above-mentioned purpose, the present invention also provides an overhead traveling vehicle system.

[0014] An overhead crane system comprises an overhead crane, an upper fixed rail and an overhead crane lifting device according to any one of claims 1 to 9, wherein the overhead crane lifting device is located on one side of the upper fixed rail, and the overhead crane lifting device is used to drive the overhead crane to rise and fall between the upper fixed rail and the ground, or between the upper fixed rail and a lower fixed rail.

[0015] Beneficial effects of the present invention: The overhead crane lifting device of the present invention adopts a lifting drive component to drive the lifting belt to drive the movable track to lift and lower the movable track and thus realize the lifting of the overhead crane, which has lower cost than module transportation; when the movable track profile is docked with the upper fixed track, the limit column passes through the through hole on the track bottom plate, and the pin cooperates with the pin seat on the track bottom plate, which can limit the movable track in multiple directions, thereby improving the accuracy and stability of the docking between the movable track and the upper fixed track; since there is no unit on the movable track that requires electrical control, the reliability is higher and the equipment cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the overhead crane lifting device according to an embodiment of the present invention; Figure 2 A schematic diagram of the structure of a movable track according to an embodiment of the present invention; Figure 3 It is a structural schematic diagram of a lifting mechanism according to an embodiment of the present invention; Figure 4A schematic structural diagram of a latch mechanism according to an embodiment of the present invention; Figure 5 A schematic diagram of a use state of an overhead crane lifting device according to an embodiment of the present invention; Figure 6 A structural schematic diagram of a Litz wire opening and closing mechanism according to an embodiment of the present invention; Figure 7 is a structural schematic diagram of a Litz wire opening and closing mechanism without showing the Litz wire and the Litz wire fixing plate; Figure 8 for Figure 7 A cross-sectional view of the Litz wire opening and closing mechanism shown; Fig. 9 It is a structural schematic diagram of an overhead crane lifting device without showing the lifting mechanism; Fig.10 A partial enlarged view of the overhead crane lifting device showing part of the lever and all of the self-resetting blocking mechanisms; Fig.11 Schematic diagram of the structure of the overhead travelling crane system according to an embodiment of the present invention.

[0017] Reference numerals: 1. Overhead crane, 2. Upper fixed track, 3. Overhead crane lifting device, 4. Lower fixed track; 10. Installation base plate; 20. Active track; 21. Active track profile; 22. Track base plate; 30. Lifting mechanism; 31. Lifting belt; 32. Lifting drive assembly; 321. Lifting reel; 322. Lifting reel servo motor; 323. First storage wheel; 324. Storage wheel servo motor; 325. Tensioning wheel; 33. Synchronous belt; 34. Synchronous wheel; 35. Coupling; 36. Active shaft; 40. Limiting assembly; 41. Latch mechanism; 411. Latch; 411a. Electric push rod; 411b. Latch plate; 412. Latch seat; 412a. Latch Shaft, 412b, deep groove ball bearing, 42, limit column, 43, identification plate, 44, height sensor; 50, Litz wire opening and closing mechanism, 51, guide rail, 52, opening and closing assembly, 521, guide rail slider, 522, push plate, 522a, nut fixing seat, 523, connecting beam, 53, clamp, 531, screw, 532, clamping rod, 533, driver, 54, Litz wire fixing plate, 55, Litz wire; 60, lever; 70, self-resetting blocking mechanism, 71, flip bracket, 72, flip shaft, 73, flip block, 74, torsion spring, 75, blocking plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figures 1 to 4 As shown, the overhead crane lifting device of the embodiment of the present invention comprises: an installation base plate 10, a movable track 20, a lifting mechanism 30 and a limit assembly 40, wherein the installation base plate 10 is optionally arranged above the upper fixed track and the movable track 20, the movable track 20 comprises a movable track profile 21 and a track base plate 22, the movable track profile 21 is used to dock with the upper fixed track of the maintenance area, so that the overhead crane can move between the movable track profile 21 and the upper fixed track, and the track base plate 22 and the movable track profile 21 are fixedly connected by a track bracket 23; the lifting mechanism 30 comprises a lifting belt 31 and a lifting drive assembly 32, the first end of the lifting belt 31 is installed on the movable track 20, and the second end of the lifting belt 31 is installed on the movable track 20. The end is connected to the lifting drive component 32, and the lifting drive component 32 can be optionally installed on the installation base plate 10. The lifting drive component 32 is used to drive the lifting belt 31 to release or retract, so that the lifting belt 31 drives the movable track 20 to rise and fall; the limiting component 40 includes a latch mechanism 41 and a limiting column 42, the latch mechanism 41 includes a latch 411 installed on the installation base plate 10 and a latch seat 412 installed on the track base plate 22, the limiting column 42 is fixed on the installation base plate 10, and a through hole suitable for the limiting column 42 to pass through is opened on the track base plate 22. When the movable track profile 21 is docked with the upper fixed track, the limiting column 42 passes through the through hole, and the latch 411 cooperates with the latch seat 412 to limit the movable track 20.

[0020] It can be understood that in the maintenance area, the lifting drive assembly 32 is used to drive the lifting belt 31 to drive the movable track 20 to rise and fall. When the overhead crane is located on the movable track 20, the overhead crane can be raised and lowered synchronously with the movable track 20. After the movable track profile 21 is docked with the upper fixed track, the overhead crane can move along the movable track profile 21 to the upper fixed track, which has a lower cost than the module transportation. If an XY axis coordinate system is established on the upper end surface of the upper fixed track, the direction in which the upper fixed track extends is taken as the X axis direction, and the direction perpendicular to the X axis and located on the upper end surface of the upper fixed track is taken as the Y axis direction. The direction perpendicular to both the X-axis and Y-axis directions is taken as the Z-axis direction. When the movable track profile 21 is docked with the upper fixed track, the limiting column 42 passes through the through hole on the track base plate 22, so as to limit the movable track 20 in the X-axis and Y-axis directions. The latch 411 on the mounting base plate 10 cooperates with the latch seat 412 on the track base plate 22, so as to limit the movable track 20 in the Z-axis direction, thereby improving the docking accuracy and stability of the movable track 20 with the upper fixed track. Since there is no unit requiring electrical control on the movable track 20, the reliability is higher and the equipment cost is lower.

[0021] like Figure 3 As shown, in one embodiment of the present invention, the lifting drive assembly 32 may include a lifting reel 321, a lifting reel servo motor 322, a first storage wheel 323 and a storage wheel servo motor 324. The second end of the lifting belt 31 passes through the lifting reel 321 and is wound around the first storage wheel 323. The lifting reel servo motor 322 is used to drive the lifting reel 321 to rotate counterclockwise or clockwise to drive the release or recovery of the lifting belt 31. The storage wheel servo motor 324 is used to tighten the recovered lifting belt 31 onto the storage wheel.

[0022] In one embodiment of the present invention, a tensioning wheel 325 may be provided between the lifting reel 321 and the first receiving wheel 323, so that the second end of the lifting belt 31 passes through the bottom surface of the lifting reel 321 and the top surface of the tensioning wheel 325 and is wound around the first receiving wheel 323, thereby controlling the tension of the lifting belt 31, ensuring the stability of the lifting mechanism 30, and extending the service life of the lifting belt 31. In order to prevent the lifting belt 31 from being broken due to excessive tension when the first receiving wheel 323 is receiving the belt, a torque limiter may be provided on the shaft of the first receiving wheel 323 to prevent overload and slippage.

[0023] It is understandable that in some other embodiments of the present invention, the first collecting wheel 323 and the collecting wheel servo motor 324 may not be provided, and the second end of the lifting belt 31 may be directly wound around the lifting reel 321. The lifting reel 321 can not only drive the release or recovery of the lifting belt 31, but also can store the recovered lifting belt 31 when the lifting belt 31 is recovered; a torque limiter may also be provided on the shaft of the lifting reel 321 to prevent overload and slippage.

[0024] In one embodiment of the present invention, the lifting mechanism 30 may also include a synchronous belt 33, a synchronous wheel 34, a coupling 35 and a driving shaft 36. The first end of the synchronous belt 33 is installed on the movable track 20, and the second end of the synchronous belt 33 is wound around the synchronous wheel 34. The coupling 35 is used to connect the axis of the lifting reel 321 with one end of the driving shaft 36, and the other end of the driving shaft 36 is connected to the axis of the synchronous wheel 34. When the lifting reel servo motor 322 drives the lifting reel 321 to rotate, the coupling 35 drives the synchronous wheel 34 on the driving shaft 36 to rotate, and the synchronous belt 33 and the lifting belt 31 are released or recovered synchronously.

[0025] It can be understood that the lifting belt 31 can be two sets arranged on the left and right sides of the movable track 20, and the corresponding lifting reels 321 can be two coaxial groups. The lifting reel servo motor 322 can drive the two sets of lifting reels 321 to rotate synchronously to achieve the synchronous release or recovery of the two lifting belts 31; the synchronous belt 33 and the lifting belt 31 can be respectively arranged on the front and rear sides of the movable track 20, so that the movable track 20 can be lifted and lowered in a stable state to prevent the movable track 20 from flipping and causing the overhead travelling vehicle to fall. In some other embodiments of the present invention, a tensioning wheel and a second receiving wheel that rotates synchronously with the first receiving wheel 323 can also be arranged after the synchronous wheel 34, and this embodiment is not limited thereto.

[0026] like Figure 4 As shown, in one embodiment of the present invention, the latch 411 may include an electric push rod 411a and a plug plate 411b, the electric push rod 411a is used to drive the plug plate 411b to extend or retract, and the latch seat 412 may include two latch shafts 412a, and a gap suitable for the plug plate 411b to be inserted is formed between the two latch shafts 412a, so that when the plug plate 411b is extended and inserted into the gap, the movable track 20 provided with the latch seat 412 is height-limited.

[0027] Optionally, a deep groove ball bearing 412b may be provided on the latch shaft 412a to convert the sliding friction when the plug plate 411b is inserted into the gap between the two latch shafts 412a into rolling friction, thereby reducing the friction resistance between the latch shaft 412a and the plug plate 411b and reducing energy loss.

[0028] like Figure 4As shown, in one embodiment of the present invention, an identification plate 43 may also be provided on the latch seat 412, and the limit assembly may further include a height sensor 44, which is used to detect the height of the identification plate 43. When the identification plate 43 reaches a preset height, the electric push rod 411a drives the plug plate 411b to extend and insert into the gap, thereby realizing automatic control of the latch mechanism 41.

[0029] In one embodiment of the present invention, a Litz wire may be arranged under the movable rail profile 21. When the movable rail profile 21 is docked with the upper fixed rail, the overhead travelling crane may move between the movable rail profile 21 and the upper fixed rail.

[0030] In order to prevent the overhead travelling crane from starting to move before the movable rail profile 21 is precisely connected to the upper fixed rail, and to ensure the stability of the rail connection and the safety of the overhead travelling crane, it is also possible not to set the Litz wire under the movable rail profile 21, and to set a special Litz wire opening and closing mechanism 50 (such as Figure 5 and Figure 6 As shown), by controlling the opening and closing of the Litz wire in the Litz wire opening and closing mechanism 50, it is controlled whether there is a Litz wire under the movable track profile 21. Figures 5 to 8 As shown, the Litz wire opening and closing mechanism 50 may include a guide rail 51, an opening and closing assembly 52, a clamp 53 and a Litz wire fixing plate 54. The guide rail 51 is installed on the mounting base 10, the opening and closing assembly 52 is connected to the Litz wire fixing plate 54, and the clamp 53 is used to drive the opening and closing assembly 52 to move along the guide rail so that the opening and closing assembly 52 drives the Litz wire fixing plate 54 to open or close. A Litz wire 55 is fixedly arranged on the Litz wire fixing plate 54.

[0031] When the movable track profile 21 is not in place, the Litz wire fixing plate 54 is in an open state, there is no Litz wire 55 under the movable track profile 21, and the overhead crane will not be powered to leave the movable track 20; when the movable track profile 21 is docked with the upper fixed track, and the limit assembly 40 has limited the movable track 20, the clamp 53 can drive the opening and closing assembly 52 to move along the guide rail so that the opening and closing assembly 52 drives the Litz wire fixing plate 54 to close, and the Litz wire 55 located under the movable track profile 21 is docked with the Litz wire of the upper fixed track. At this time, the Litz wire and the magnetic core on the overhead crane are in the power supply range, and the overhead crane can move between the movable track profile 21 and the upper fixed track; when the overhead crane lifting device needs to transport the overhead crane to the ground for maintenance, the Litz wire fixing plate 54 can be opened again, so that the movable track 20 and the overhead crane on the movable track 20 can be driven by the lifting belt 31 to descend to the ground.

[0032] like Figures 6-8As shown, in one embodiment of the present invention, the opening and closing assembly 52 may include a guide rail slider 521, a push plate 522 and a connecting beam 523. The guide rail slider 521 is slidably set on the guide rail 51, one end of the push plate 522 is fixed on the connecting beam 523, the push plate 522 is connected to the clamp 53, so that the clamp 53 drives the push plate 522 to move forward and backward, one end of the connecting beam 523 is fixedly connected to the guide rail slider 521, and the other end of the connecting beam 523 is fixedly connected to the Litz wire fixing plate 54.

[0033] like Figure 8 As shown, in one embodiment of the present invention, the clamp 53 may include a screw 531, a clamping rod 532 and a driver 533, wherein the screw 531 is connected to the clamping rod 532, the screw 531 is fixedly connected to the push plate 522, and the driver 533 is used to drive the clamping rod 532 to reciprocate along its own axis, and drive the push plate 522 to move forward and backward through the screw 531. Optionally, the push plate 522 may be fixed to the screw 531 through a nut fixing seat 522a, so that the push plate 522 is driven to move forward and backward when the screw 531 moves.

[0034] When the movable track profile 21 is not in place, the clamp 53 is in an open state, and the Litz wire fixing plate 54 is in an open state; when the movable track profile 21 is docked with the upper fixed track, and the limit assembly 40 limits the movable track 20, the clamp 53 enters a closed state, and the driver 533 drives the clamping rod 532 to move along its own axis toward the center of the clamp 53, and the push plate 522 drives the opening and closing assembly 52 to move along the guide rail so that the opening and closing assembly 52 drives the Litz wire fixing plate 54 to close, so that the Litz wire fixing plate 54 enters a closed state; when the overhead crane lifting device needs to transport the overhead crane to the ground for maintenance, the clamp 53 enters an open state, and the actuator 533 drives the clamping rod 532 away from the center of the clamp 53 along its own axis, so that the Litz wire fixing plate 54 can be opened again.

[0035] It can be understood that driving the opening and closing component 52 to move along the guide rail by the clamp 53 is only one driving method of the opening and closing component 52. In some other embodiments of the present invention, other driving devices, such as a driving motor, can also be set on one side of the opening and closing component 52 according to specific needs, and this embodiment is not limited to this.

[0036] In one embodiment of the present invention, a position sensor can be provided to detect the position of the opening and closing assembly 52 or the Litz wire fixing plate 54, so that the clamp 53 controls the driver 533 to stop driving the clamping rod 532 to move according to the position of the opening and closing assembly 52 or the Litz wire fixing plate 54.

[0037] In order to prevent the overhead travelling vehicle from falling off the movable track 20 during the lifting process, an electric blocking mechanism may be provided on the movable track profile 21 to limit the position of the overhead travelling vehicle on the movable track profile 21 when the movable track 20 is lifted or lowered.

[0038] In order to save equipment cost, the electric blocking mechanism may not be provided, and a lever 60 and a self-resetting blocking mechanism 70 may be provided in the overhead crane lifting device to limit the position on the movable rail profile 21 of the overhead crane when the movable rail 20 is raised or lowered. Figure 2 , 9 As shown in FIG. 10 , the lever 60 can be fixedly mounted on the mounting base plate 10; the self-resetting blocking mechanism 70 can include a flip bracket 71, a flip shaft 72, a flip block 73, a torsion spring 74 and a blocking plate 75. The flip bracket 71 is mounted on the side of the movable track profile 21, the flip shaft 72 is arranged on the flip bracket 71, the flip block 73 is rotatably connected to the flip shaft 72, the torsion spring 74 is arranged at the rotation connection of the flip block 73, and the flip block 73 is connected to the blocking plate 75. When the self-resetting blocking mechanism 70 is in the first state, the flip block 73 is used to limit the overhead travelling vehicle on the movable track profile 21; when the lever 60 moves the blocking plate 75, the blocking plate 75 drives the flip block 73 to flip synchronously, so that the self-resetting blocking mechanism 70 is in the second state.

[0039] It can be understood that since the lever 60 is fixedly mounted on the mounting base 10, when the movable track profile 21 is docked with the upper fixed track, the lever 60 can shift the blocking plate 75, and the blocking plate 75 drives the flip block 73 to flip synchronously, so that the self-resetting blocking mechanism 70 is in the second state, and the overhead crane can move between the movable track profile 21 and the upper fixed track. Since the flip block 73 drives the torsion spring 74 to twist, the torsion spring 73 has a restoring force at this time; when the overhead crane lifting device needs to transport the overhead crane to the ground for maintenance, the lever 60 is separated from the blocking plate 75, and the flip block 73 is self-reset under the action of the restoring force of the torsion spring 73, so that the self-resetting blocking mechanism 70 is reset to the first state.

[0040] It can be seen that the lever 60 and the self-resetting blocking mechanism 70 of the present embodiment can replace the electric blocking mechanism to limit the position on the movable track profile 21 of the overhead crane, and the conversion of the self-resetting blocking mechanism 70 between the first state and the second state is achieved when the movable track 20 moves through the mechanical structure of the self-resetting blocking mechanism itself, without adding additional drive devices and control modules, with low cost and high stability.

[0041] According to the overhead crane lifting device of the embodiment of the present invention, a lifting drive component is used to drive the lifting belt to drive the movable track to lift and lower the overhead crane, and the lifting cost is lower than that of module transportation. When the movable track profile is docked with the upper fixed track, the limit column passes through the through hole on the track bottom plate, and the pin cooperates with the pin seat on the track bottom plate, which can limit the movable track in multiple directions, thereby improving the accuracy and stability of the docking between the movable track and the upper fixed track. Since there is no unit on the movable track that requires electrical control, the reliability is higher and the equipment cost is lower.

[0042] In addition, to achieve the above-mentioned purpose, the present invention also provides an overhead traveling vehicle system.

[0043] like Fig.11 As shown, the overhead crane system of the embodiment of the present invention includes an overhead crane 1, an upper fixed rail 2 and an overhead crane lifting device 3 as described above, wherein the overhead crane lifting device 3 is located on one side of the upper fixed rail 2, and the overhead crane lifting device 3 is used to drive the overhead crane 1 to rise and fall between the upper fixed rail 2 and the ground, or between the upper fixed rail 2 and the lower fixed rail 4.

[0044] The overhead crane system according to the embodiment of the present invention includes the above-mentioned overhead crane lifting device, which can limit the movable track in multiple directions, thereby improving the accuracy and stability of the docking between the movable track and the upper fixed track; and has high reliability and low equipment cost.

[0045] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0049] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A crane lifting device, characterized in that: include: Install the bottom plate (10); A movable track (20), the movable track (20) comprising a movable track profile (21) and a track base plate (22), the movable track profile (21) being used to dock with an upper fixed track in a maintenance area, the track base plate (22) and the movable track profile (21) being fixedly connected via a track bracket (23); A lifting mechanism (30), the lifting mechanism (30) comprising a lifting belt (31) and a lifting drive assembly (32), the first end of the lifting belt (31) being mounted on the movable track (20), the second end of the lifting belt (31) being connected to the lifting drive assembly (32), the lifting drive assembly (32) being used to drive the lifting belt (31) to release or retract, so that the lifting belt (31) drives the movable track (20) to rise and fall; A limit assembly (40), the limit assembly (40) comprising a latch mechanism (41) and a limit column (42), the latch mechanism (41) comprising a latch (411) mounted on the mounting base plate (10) and a latch seat (412) mounted on the track base plate (22), the limit column (42) being fixed on the mounting base plate (10), the track base plate (22) being provided with a through hole suitable for the limit column (42) to pass through, and when the movable track profile (21) is butted against the upper fixed track, the limit column (42) passes through the through hole, and the latch (411) cooperates with the latch seat (412) to limit the movable track (20).

2. The overhead crane lifting device according to claim 1, characterized in that: The lifting drive assembly (32) comprises a lifting reel (321) and a lifting reel servo motor (322); the second end of the lifting belt (31) is wound around the lifting reel (321); the lifting reel servo motor (322) is used to drive the lifting reel (321) to rotate counterclockwise or clockwise, so as to drive the release or recovery of the lifting belt (31).

3. The overhead crane lifting device according to claim 2, characterized in that: The lifting mechanism (30) further comprises a synchronous belt (33), a synchronous wheel (34), a coupling (35) and a driving shaft (36); the first end of the synchronous belt (33) is mounted on the movable track (20); the second end of the synchronous belt (33) is wound around the synchronous wheel (34); the coupling (35) is used to connect the shaft of the lifting reel (321) with one end of the driving shaft (36); the other end of the driving shaft (36) is connected with the shaft of the synchronous wheel (34); when the lifting reel servo motor (322) drives the lifting reel (321) to rotate, the coupling (35) drives the synchronous wheel (34) on the driving shaft (36) to rotate, and the synchronous belt (33) and the lifting belt (31) are synchronously released or recovered.

4. The overhead crane lifting device according to claim 1, characterized in that: The latch (411) comprises an electric push rod (411a) and a plug plate (411b), wherein the electric push rod (411a) is used to drive the plug plate (411b) to extend or retract, and the latch seat (412) comprises two latch shafts (412a), wherein a gap suitable for inserting the plug plate (411b) is formed between the two latch shafts (412a).

5. The overhead crane lifting device according to claim 4, characterized in that: An identification plate (43) is provided on the latch seat (412), and the limit assembly further comprises a height sensor (44), wherein the height sensor (44) is used to detect the height of the identification plate (43), and when the identification plate (43) reaches a preset height, the electric push rod (411a) drives the plug plate (411b) to extend and insert into the gap.

6. The overhead crane lifting device according to claim 1, characterized in that: Also includes: A Litz wire opening and closing mechanism (50), the Litz wire opening and closing mechanism (50) comprising a guide rail (51), an opening and closing assembly (52), a clamp (53) and a Litz wire fixing plate (54), the guide rail (51) being mounted on the mounting base plate (10), the opening and closing assembly (52) being connected to the Litz wire fixing plate (54), the clamp (53) being used to drive the opening and closing assembly (52) to move along the guide rail so that the opening and closing assembly (52) drives the Litz wire fixing plate (54) to open or close, and a Litz wire (55) being fixedly arranged on the Litz wire fixing plate (54).

7. The overhead crane lifting device according to claim 6, characterized in that: The opening and closing assembly (52) comprises a guide rail slider (521), a push plate (522) and a connecting beam (523); the guide rail slider (521) is slidably arranged on the guide rail (51); one end of the push plate (522) is fixed on the connecting beam (523); the push plate (522) is connected to the clamp (53) so that the clamp (53) drives the push plate (522) to move forward and backward; one end of the connecting beam (523) is fixedly connected to the guide rail slider (521); and the other end of the connecting beam (523) is fixedly connected to the Litz wire fixing plate (54).

8. The overhead crane lifting device according to claim 7, characterized in that: The clamp (53) comprises a screw rod (531), a clamping rod (532) and a driver (533), wherein the screw rod (531) is connected to the clamping rod (532), the screw rod (531) is fixedly connected to the push plate (522), and the driver (533) is used to drive the clamping rod (532) to reciprocate along its own axis, thereby driving the push plate (522) to move forward and backward through the screw rod (531).

9. The overhead crane lifting device according to claim 1, characterized in that: Also includes: A shifting rod (60), the shifting rod (60) being fixedly mounted on the mounting base plate (10); A self-resetting blocking mechanism (70) comprises a flip bracket (71), a flip shaft (72), a flip block (73), a torsion spring (74) and a blocking plate (75); the flip bracket (71) is mounted on a side of the movable track profile (21); the flip shaft (72) is arranged on the flip bracket (71); the flip block (73) is rotatably connected to the flip shaft (72); the torsion spring (74) is arranged at a rotatably connected position of the flip block (73); the flip block (73) is connected to the blocking plate (75); when the self-resetting blocking mechanism (70) is in a first state, the flip block (73) is used to restrict the overhead travelling vehicle on the movable track profile (21); when the lever (60) moves the blocking plate (75), the blocking plate (75) drives the flip block (73) to flip synchronously, so that the self-resetting blocking mechanism (70) is in a second state.

10. An overhead travelling crane system, characterized in that: The invention comprises an overhead crane (1), an upper fixed rail (2), and an overhead crane lifting device (3) according to any one of claims 1 to 9, wherein the overhead crane lifting device (3) is located on one side of the upper fixed rail (2), and the overhead crane lifting device (3) is used to drive the overhead crane (1) to rise and fall between the upper fixed rail (2) and the ground, or between the upper fixed rail (2) and the lower fixed rail (4).

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