Overhead crane transmission system and overhead crane transmission method

Abstract

The present invention discloses an overhead crane transmission system and an overhead crane transmission method, wherein the overhead crane transmission system includes a fixed track, a lifting track, and an actuating unit, wherein the lifting track can be lifted and lowered to dock with the fixed track; a first power supply line is used to supply power to the overhead crane, and the first power supply line includes a first power supply part corresponding to the lifting track in its length direction; the actuating unit includes an actuating mechanism and a wire fixing member, and the actuating mechanism is connected to the first power supply part through the wire fixing member, so that the first power supply part can move between a first position and a second position in the width direction of the lifting track; in the first position, the first power supply part is located inside the lifting track; in the second position, the first power supply part is located outside the lifting track. The present invention can effectively improve the transmission stability of the overhead crane between the fixed track and the lifting track, and ensure the safety and reliability of the overhead crane transmission.

Description

Technical Field

[0001] The present invention relates to the technical field of semiconductor processing, and in particular to an overhead crane transmission system and an overhead crane transmission method. Background Art

[0002] The automatic material handling system (AMHS), also known as the overhead crane system, is widely used in semiconductor wafer factories. It can accurately and quickly transport wafer boxes to destinations such as process machines. AMHS mainly includes tracks, overhead cranes (OHTs) and control systems. Among them, the tracks include fixed tracks and lifting tracks. The fixed tracks are usually fixed in mid-air, and the lifting tracks can have a lifting position and a docking position under the action of the lifting mechanism. In the lifting position, the lifting track falls to the lowest point, and the overhead crane can be easily installed on the lifting track. In the docking position, the lifting track is lifted to the highest point, and the lifting track docks with the fixed track. The overhead crane on the lifting track can be dragged from the lifting track to the fixed track. The fixed track is connected to a power supply line, and the overhead crane can drive on the fixed track self-drivingly through the power supply line.

[0003] In AMHS, there are hundreds of overhead cranes in operation, and sometimes thousands of them. When the lifting track is connected to the fixed track, how to ensure that the overhead crane enters the fixed track or lifting track safely, reliably and smoothly is an urgent problem to be solved. Summary of the invention

[0004] In order to overcome the above disadvantages, the purpose of the present invention is to provide an overhead crane transmission system and an overhead crane transmission method, which can effectively improve the transmission stability of the overhead crane between the fixed track and the lifting track and ensure the safety and reliability of the overhead crane transmission.

[0005] An overhead travelling crane transmission system according to an embodiment of the present invention comprises:

[0006] Fixed track;

[0007] A lifting track, the lifting track can be lifted and connected with the fixed track;

[0008] A first power supply line, the first power supply line is used to supply power to the overhead travelling vehicle, and the first power supply line comprises a first power supply portion corresponding to the lifting track in the length direction thereof;

[0009] The actuating unit includes an actuating mechanism and a wire fixing part. The actuating mechanism is connected to the first power supply part through the wire fixing part so that the first power supply part can move between a first position and a second position in the width direction of the lifting track; in the first position, the first power supply part is located inside the lifting track; in the second position, the first power supply part is located outside the lifting track.

[0010] Furthermore, when the lifting track is docked to the fixed track, the wire fixing member is located below the lifting track.

[0011] Furthermore, the first power supply line further includes a second power supply portion corresponding to the fixed track in its length direction, and one end of the second power supply portion facing the first power supply portion is provided with a redundant section bent outwards.

[0012] Furthermore, the second power supply unit is a segmented structure connected into one by a junction box, and the junction box is located on a side of the redundant segment away from the first power supply unit.

[0013] Furthermore, the overhead travelling crane transmission system also includes a second power supply line spaced apart from the first power supply line in the width direction of the fixed track. The second power supply line and the first power supply line are respectively located on both sides of the overhead travelling crane, and when the overhead travelling crane is on the fixed track, the second power supply line always supplies power to the overhead travelling crane.

[0014] Furthermore, the overhead crane transmission system also includes a locking mechanism, which includes a locking block and a locking member that are used in conjunction with each other. The locking block is arranged on the lifting rail, and a locking groove is provided at the lower end thereof; the locking member is arranged on the fixed rail, and includes a push rod that can be inserted into or disengaged from the locking groove under the action of the locking drive member.

[0015] Furthermore, the push rod is connected to the locking drive member via an elastic member.

[0016] Furthermore, the locking mechanism also includes a crane stopper, which includes a stop rail, a stop slider, a stop block and a push rod. The stop rail is arranged in a vertical direction, and a stop slider is slidably arranged on it; the stop block is located at the end of the fixed rail and is fixedly connected to the stop slider; the push rod is suspended, and its upper end is connected to the stop block, and its lower end is aligned with the locking block; when the stop block is at the lowest position, the stop block can abut against the crane located on the fixed rail.

[0017] The present invention also provides an overhead crane transmission method, which is applicable to any of the above-mentioned overhead crane transmission systems and comprises the following steps:

[0018] The actuating unit drives the first power supply part to move to the second position;

[0019] The lifting track is docked to the fixed track;

[0020] The actuating unit drives the first power supply part to move to the first position;

[0021] The overhead crane then moves along the lifting track to the fixed track or along the fixed track to the lifting track under the power supply of the first power supply line.

[0022] Specifically, a locking block is provided on the lifting track, and a locking groove with an opening facing downward is provided on the locking block; a push rod is provided on the fixed track, which can move along the length direction of the fixed track to insert into or disengage from the locking groove;

[0023] The docking of the lifting track to the fixed track includes the following steps:

[0024] The lifting track rises to be higher than the fixed track, and the inner top wall of the locking groove is higher than the highest point of the push rod surface;

[0025] The push rod moves along the length direction of the fixed track toward the locking block, so that the push rod enters the locking groove or is located below the locking groove;

[0026] The lifting track descends until the inner top wall of the locking groove is pressed against the push rod, at which time the lifting track is docked with the fixed track. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the overhead traveling vehicle transmission system according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the disassembly of the overhead travelling vehicle transmission system according to an embodiment of the present invention;

[0029] Figure 3 It is a side view of the overhead travelling vehicle transmission system when the lifting rail is docked with the fixed rail according to an embodiment of the present invention;

[0030] Figure 4 is a schematic structural diagram of an actuating unit according to an embodiment of the present invention;

[0031] Figure 5 This is a schematic structural diagram of a straight rail guide member according to an embodiment of the present invention;

[0032] Figure 6 It is a top view of the overhead travelling crane transmission system when the lifting rail is docked to the fixed rail according to an embodiment of the present invention;

[0033] Figure 7 It is a schematic diagram of the structure of the cooperation between the first power supply line and the second power supply line when the lifting track is connected to the fixed track according to the embodiment of the present invention;

[0034] Figure 8 It is a structural schematic diagram of a locking mechanism according to an embodiment of the present invention;

[0035] Fig. 9 for Figure 8 A partial enlarged view of area A in the middle. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention are described in detail below in conjunction with 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 a clearer and more definite definition of the protection scope of the present invention.

[0037] Example

[0038] See attached Figure 1-3As shown, a transmission system of an overhead travelling vehicle of the present invention comprises a fixed rail 1, a lifting rail 2, a first power supply line 3 and an actuating unit 4, wherein the lifting rail 2 can be lifted and lowered to dock with the fixed rail 1. The first power supply line 3 is used to supply power to an overhead travelling vehicle (not shown in the figure), and the first power supply line 3 comprises a first power supply part 31 corresponding to the lifting rail 2 in its length direction. The actuating unit 4 comprises an actuating mechanism 41 and a wire fixing part 42, and the actuating mechanism 41 is connected to the first power supply part 31 through the wire fixing part 42, so that the first power supply part 31 can move between a first position and a second position in the width direction of the lifting rail 2; in the first position, the first power supply part 31 is located inside the lifting rail 2; in the second position, the first power supply part 31 is located outside the lifting rail 2.

[0039] When the actuating unit 4 drives the first power supply part 31 to move to the second position, the first power supply part 31 is located outside the lifting track 2. At this time, the lifting and lowering movement of the lifting track 2 will not be interfered by the first power supply part 31, that is, the first power supply part 31 in the second position can avoid the lifting track 2 during the lifting process; and when the lifting track 2 is docked to the fixed track 1, the actuating unit 4 can drive the first power supply part 31 to move to the first position so that the first power supply part 31 is located inside the lifting track 2. At this time, the first power supply part 31 can supply power to the overhead crane located on the lifting track 2, and the overhead crane can transmit between the lifting track 2 and the fixed track 1 after being energized.

[0040] The setting of the actuating unit 4 ensures that the first power supply part 31 corresponding to the lifting track 2 can avoid the lifting track 2 and the overhead travelling vehicle during the lifting process, and can also provide stable power supply to the overhead travelling vehicle when the lifting track 2 is docked with the fixed track 1. Since the first power supply line 3 is a wire structure, it is very easy to move or shake due to external force. Therefore, in the actuating unit 4, the first power supply part 31 can be fixed by setting the wire fixing part 42 to ensure that the first power supply part 31 can accurately move to the first position or the second position.

[0041] For further information, see Appendix Figure 3 As shown, when the lifting rail 2 is docked to the fixed rail 1, the wire fixing member 42 is located below the lifting rail 2. This prevents the wire fixing member 42 from hitting the lifting rail 2 or the rail fixing member fixing the lifting rail 2 when the wire fixing member 42 is driven by the actuating mechanism 41 to move along the width direction of the lifting rail 2.

[0042] Specifically, in some embodiments, see the attached Figure 2-4As shown, the wire fixing part 42 includes a connecting plate arranged along the length direction of the fixed track, on which a connecting plate groove 421 for accommodating the first power supply part 31 is provided. By providing the connecting plate groove 421 on the connecting plate, the first power supply part 31 can be limited in the connecting plate groove 421, and then the structural strength of the connecting plate is used to ensure that the first power supply part 31 is stably located in the connecting plate groove 421, so that the first power supply part 31 can accurately move to the first position or the second position with the connecting plate. Furthermore, the connecting plate groove 421 is a slotted structure to ensure that the first power supply part 31 located in the connecting plate groove 421 can be partially exposed outside the connecting plate groove 421, so as to ensure that the first power supply part 31 can contact the power supply on the overhead travelling crane during the movement.

[0043] In some embodiments, see Appendix Figure 4-5 As shown, the actuating mechanism 41 is fixedly installed above the lifting track 2, and includes a driving motor 411, a transmission module, and a connecting rod 412. The connecting rod 412 is connected to the connecting plate and the transmission module respectively, and the transmission module drives the connecting rod 412 to move linearly along the width direction of the lifting track 2 under the action of the driving motor 411. Furthermore, in order to ensure the stability of the movement of the connecting plate, two connecting rods 412 and two transmission modules are provided, and the driving motor 411 can drive the two transmission modules to drive at the same time, so as to drive the two connecting rods 412 to move synchronously. Exemplarily, the two transmission modules are respectively located on both sides of the driving motor 411, and are coaxially connected to the output shaft of the driving motor 411 through the synchronization shaft 413. When the driving motor 411 is started, the two synchronization shafts 413 can rotate synchronously, thereby driving the two transmission modules to drive synchronously.

[0044] In some embodiments, see Appendix Figure 4 As shown, the transmission module includes a belt transmission member 414 and a straight rail guide member 415, wherein the belt transmission member 414 includes a main transmission wheel, a slave transmission wheel and a transmission belt arranged on the main transmission wheel and the slave transmission wheel in a closed loop. Figure 5 As shown, the straight rail guide 415 includes a guide rail 4151 and a slider 4152. The guide rail 4151 is arranged perpendicular to the length direction of the fixed rail 1. The slider 4152 is slidably arranged on the guide rail 4151 and is respectively connected to the transmission belt and the connecting rod 412 to convert the transmission of the transmission belt into the linear movement of the connecting rod 412. The drive force of the drive motor 411 can be stably transmitted to the connecting rod 412 through the arrangement of the belt transmission member 414, and the movement direction of the connecting rod 412 can be guided through the arrangement of the straight rail guide 415.

[0045] Furthermore, the transmission belt is a toothed belt, and the slider 4152 is provided with a pressure groove 4153 for the toothed belt to pass through and press the toothed belt. The friction energy of the toothed belt by the pressure groove 4153 is used to drive the slider 4152 and the toothed belt to move synchronously. Exemplarily, the slider 4152 includes a slider body, an L-shaped connecting block, and a pressing block. The upper end of the slider body is slidably arranged on the guide rail 4151, and the lower end is connected to the L-shaped connecting block for connecting the connecting rod 412. The pressing block is fixedly connected to the L-shaped connecting block, and a pressure groove 4153 is formed between the pressing block and the L-shaped connecting block.

[0046] It should be noted that a lifting mechanism 7 is suspended on the roof above the lifting track 2, and the lifting mechanism 7 is connected to the lifting track 2 to achieve the lifting and moving of the lifting track 2. The actuating mechanism 41 can be fixedly mounted on the mounting plate of the lifting mechanism 7.

[0047] In some embodiments, see Appendix Figure 6-7 As shown, the first power supply line 3 also includes a second power supply part 32 corresponding to the fixed rail 1 in its length direction. A power supply groove is provided on the power supply of the overhead crane. When the first power supply part 31 or the second power supply part 32 contacts the power supply groove, the first power supply part 31 or the second power supply part 32 can be coupled and electrically connected with the power supply groove to supply power to the power supply.

[0048] When the first power supply part 31 moves to the second position under the action of the actuating unit 4, it is bound to cause the second power supply part 32 to be pulled. Therefore, in some embodiments, the second power supply part 32 is provided with a redundant section 321 bent outward at one end facing the first power supply part 31. Furthermore, the redundant section 321 is in a "J"-shaped structure. The setting of the redundant section 321 can provide the first power supply part 31 with a loose space for movement, thereby avoiding the phenomenon of tightening or even breaking the second power supply part 32 due to the movement of the first power supply part 31.

[0049] Furthermore, the second power supply part 32 is a segmented structure connected as one by a junction box 33, and the junction box 33 is located on the side of the redundant section 321 away from the first power supply part 31. The setting of the junction box 33 allows the second power supply part 32 to be detachably electrically connected at the junction box 33. When the first power supply part 31 moves back and forth between the first position and the second position, the redundant section 321 will inevitably be subjected to alternating stress, and long-term alternating stress can easily damage the redundant section 321. Therefore, the setting of the junction box 33 allows the first power supply line 3 to be split at the position of the junction box 33, thereby avoiding the manpower and material costs caused by replacing the entire first power supply line 3.

[0050] Furthermore, the second power supply portion 32 between the junction box 33 and the redundant section 321 can be partially presented as a straight line segment. This is because if the junction box 33 is too close to the redundant section 321, the connection position of the junction box 33 may be affected by the movement of the redundant section 321, causing the connection position to become loose. Therefore, the second power supply portion 32, which is partially presented as a straight line segment, can form a transition portion between the redundant section 321 and the junction box 33 to reduce the impact of the movement of the redundant section 321 on the connection position of the junction box 33.

[0051] In actual application, the bending angle of the redundant section 321 cannot be too small, otherwise the redundant section 321 will be broken due to insufficient looseness, affecting the service life of the redundant section 321. However, a too large bending angle will cause the overhead crane to be unable to smoothly draw power from the redundant section 321 when passing through the redundant section 321. In addition, when the overhead crane passes through the junction box 33, the overhead crane also has the risk of unstable power supply. Based on this, in some embodiments, the overhead crane transmission system also includes a second power supply line 5 spaced apart from the first power supply line 3 in the width direction of the fixed track 1, and the second power supply line 5 and the first power supply line 3 are respectively located on both sides of the overhead crane, and when the overhead crane is on the fixed track 1, the power supply on the overhead crane is always coupled and electrically connected with the second power supply line 5, so that the second power supply line 5 always supplies power to the overhead crane. Furthermore, the power supply is provided with power supply grooves facing the first power supply line 3 and the second power supply line 5 on both sides of the fixed track 1. When any one of the first power supply line 3 and the second power supply line 5 contacts the power supply groove, the power supply action of the power supply can be realized.

[0052] This embodiment does not limit the types of the first power supply line 3 and the second power supply line 5. For example, the first power supply line 3 and the second power supply line 5 may be Litz wires or busbars.

[0053] In practical application, the fixed track 1 is composed of two parallel straight rails. Therefore, the first power supply line 3 can be set on one straight rail, and the second power supply line 5 can be set on the other straight rail. By setting power supply grooves on both sides of the power supply, the power supply only needs to be coupled and electrically connected to one of the first power supply line 3 and the second power supply line 5 to achieve power supply operation, so as to improve the stability of power supply of the power supply. It should be noted that the redundant section 321 is located on the side of the first power supply line 3 away from the second power supply line 5.

[0054] In order to facilitate understanding of the coupling electrical connection process between the power supply and the first power supply line 3 and the second power supply line 5, as shown in FIG. Figure 7As shown, along the length direction of the fixed track 1, the area where the first power supply line 3 and the second power supply line 5 are located is divided into area A, area B, area C, and area D, wherein the first power supply line 3 spans area A, area B, area C, and area D, and the second power supply line 5 spans area B, area C, and area D, and the first power supply part 31 of the first power supply line 3 is located in area A, and the redundant section 321 and the junction box 33 are located in area B. When the electric collector of the vehicle moves from area A to area C, the electric collector can be coupled and electrically connected with the first power supply line 3 (the first power supply part 31) in area A; it can be coupled and electrically connected with the first power supply line 3 and the second power supply line 5 at the same time in area D; in area B, due to the redundant section 321 and the junction box 33, the electric collector cannot be continuously coupled and electrically connected with the first power supply line 3, but it is always coupled and electrically connected with the second power supply line 5; finally, in area C, the electric collector is coupled and electrically connected with the first power supply line 3 and the second power supply line 5 again at the same time. Therefore, by laying out the second power supply line 5 and providing two power supply grooves on the power supply, the power supply stability of the power supply during the travel of the overhead crane can be ensured.

[0055] In addition, adding a D zone between zone A and zone B that can be coupled and electrically connected to the first power supply line 3 and the second power supply line 5 at the same time can effectively avoid the phenomenon of temporary inability to draw power when the power collector directly switches from zone A to zone B (switches from the first power supply line 3 to the second power supply line 5). That is, zone D can play a role in buffering the transition, so that in the process of moving from zone D to zone B, the power collector is always coupled and electrically connected to the second power supply line 5, and thus the phenomenon of unstable power supply caused by switching power will not occur. Based on this, along the length direction of the fixed track 1, the size of the connecting plate should be larger than the size of the lifting track 2, so that when the lifting track 2 is docked to the fixed track 1, the connecting plate can partially extend to the bottom of the fixed track 1, so that the first power supply part 31 located on the connecting plate can extend to zone D.

[0056] In some embodiments, the end of the fixed rail 1 is connected to a wire avoidance member 8 opposite to the wire fixing member 42, the wire avoidance member 8 is away from the fixed rail 1 in an extension direction perpendicular to the fixed rail 1, and the wire avoidance member 8 is connected to the second power supply line 5 to guide the second power supply line 5 to avoid the lifting rail 2.

[0057] In addition, in order to ensure the position stability of the first power supply line 3 and the second power supply line 5 on the fixed rail, in some embodiments, two power supply line fixing plates 11 are relatively arranged on the fixed rail 1, one power supply line fixing plate 11 is provided with a first accommodating groove for accommodating the first power supply line 3, and the other power supply line fixing plate 11 is provided with a second accommodating groove for accommodating the second power supply line 5.

[0058] Since the docking accuracy between the lifting rail 2 and the fixed rail 1 will also affect the transmission stability of the overhead travelling vehicle, in some embodiments, see the attached Figure 8-9As shown, a locking mechanism 6 is provided between the lifting track 2 and the fixed track 1. The locking mechanism 6 includes a locking block 61 and a locking member used in conjunction with each other, wherein the locking block 61 is provided on the lifting track 2 and has a locking groove 611 formed thereon. The locking member is provided on the fixed track 1 and includes a push rod 63 that can be inserted into or out of the locking groove 611 under the action of a locking driving member 62 (such as an electric telescopic rod). The cooperation between the locking block 61 and the locking member can lock the docking position of the lifting track 2 and the fixed track 1.

[0059] In some embodiments, the locking member further includes a guide seat 64 fixed to the fixed rail 1, and the guide seat 64 is provided with guide holes arranged along the length direction of the fixed rail 1. The push rod 63 is inserted into the guide hole, one end of which is connected to the locking drive member 62, and the other end faces the locking block 61. The setting of the guide seat 64 can guide the moving direction of the push rod 63.

[0060] In some embodiments, the push rod 63 is connected to the locking drive 62 via an elastic member 65. Exemplarily, the elastic member 65 is a rubber connector. When the push rod 63 is inserted into the locking block 61, part of the weight of the lifting track 2 is transferred to the push rod 63 through the locking block 61. Since an elastically deformable rubber connector is provided between the push rod 63 and the locking drive 62, the gravity on the push rod 63 is only transferred to the fixed track 1 through the guide seat 64, and is not transferred to the locking drive 62, thereby avoiding damage to the locking drive 62 due to radial force.

[0061] In actual application, it is inevitable that there will be a deviation in the docking height between the lifting rail 2 and the fixed rail 1. At this time, when the locking mechanism 6 is running, the push rod 63 is very likely to be unable to align with the locking groove 611. Therefore, in order to ensure the smooth operation of the locking mechanism 6, in some embodiments, the structure of the locking groove 611 is limited and the docking method of the rails is adjusted.

[0062] Specifically, the locking groove 611 is formed on the lower end surface of the locking block 61 , and the opening of the locking groove 611 faces downward. In the process of connecting the lifting rail 2 to the fixed rail 1, the lifting rail 2 is first raised to a position higher than the fixed rail 1. At this time, the lower end surfaces of the locking block 61 and the locking groove 611 can be higher than the lower end surface of the push rod 63; then the locking drive 62 drives the push rod 63 to extend toward the locking block 61, so that the push rod 63 can extend into the locking groove 611 or below the locking groove 611. At this time, the push rod 63 does not contact the locking groove 611 (that is, the push rod 63 and the locking groove 611 are not locked and fixed); when the lifting rail 2 descends, the locking block 61 immediately moves down and abuts against the push rod 63. Due to the stop of the push rod 63, the locking block 61 no longer moves down. At this time, the lifting rail 2 is connected to the fixed rail 1. The overhead crane can move along the lifting rail 2 to the fixed rail 1 or move along the fixed rail 1 to the lifting rail 2. By limiting the structure of the locking groove 611 and adjusting the rail docking method, the smooth docking of the fixed rail 1 and the lifting rail 2 is ensured, and the lifting accuracy requirement of the lifting rail 2 during the docking process can be reduced, making the rail docking operation simpler.

[0063] Furthermore, in order to improve the abutment stability of the locking groove 611 against the push rod 63, the locking groove 611 can be set to an inverted V-shaped structure.

[0064] When the lifting track 2 has not yet been docked on the fixed track 1, the overhead travelling vehicle on the fixed track 1 is at risk of falling from the end of the fixed track 1. Based on this, in some embodiments, see the attached Fig. 9 As shown, the locking mechanism 6 also includes a crown block stopper, which is arranged on one end of the fixed rail 1 facing the lifting rail 2, and includes a stopper slide rail 66, a stopper slider 67, a stopper block 68 and a top rod 69. The stopper slide rail 66 is arranged on the guide seat 64 in the vertical direction, and a stopper slider 67 is slidably arranged on the stopper slide rail 66. The stopper block 68 abuts against the fixed rail 1 and is fixedly connected to the stopper slider 67. The top rod 69 is suspended, with its upper end fixedly connected to the stopper block 68 and its lower end aligned with the locking block 61. When the stopper block 68 is at the lowest position, the stopper block 68 abuts against the fixed rail 1 and can abut against the crown block located on the fixed rail 1.

[0065] When the stop slider 67 is at the lowest position of movement, the stop block 68 abuts against the fixed rail 1 to stop the movement of the overhead travelling vehicle on the fixed rail 1; when the lifting rail 2 rises, the locking block 61 can rise accordingly and push the push rod 69 to move upward, and the push rod 69 then drives the stop block 68 to move upward, and the stop slider 67 then moves upward along the stop slide rail 66; when the lifting rail 2 is connected to the fixed rail 1, the stop block 68 disengages from the fixed rail 1, at this time, the overhead travelling vehicle is no longer stopped by the stop block 68, and the overhead travelling vehicle can move from the fixed rail 1 to the lifting rail 2.

[0066] When the lifting track 2 is not docked with the fixed track 1, the stopper of the overhead travelling vehicle can stop the overhead travelling vehicle that moves to the end of the fixed track 1 to prevent the overhead travelling vehicle from sliding off the gap, thereby improving the safety of overhead travelling vehicle transmission; and when the lifting track 2 is docked with the fixed track 1, the locking block 61 can drive the stopper 68 to disengage from the fixed track 1, thereby making way for the overhead travelling vehicle to move between the fixed track 1 and the lifting track 2. In addition, the rise of the stopper 68 depends on the driving force of the lifting mechanism 7 on the lifting track 2, and the fall of the stopper 68 depends on its own gravity, therefore, the lifting and lowering drive of the stopper 68 does not require the addition of an additional power part.

[0067] This embodiment also provides a crane transmission method applicable to the above-mentioned crane transmission system, comprising the following steps:

[0068] S1, the actuating unit 4 drives the first power supply part 31 to move to the second position;

[0069] S2, the lifting track 2 is connected to the fixed track 1;

[0070] S3, the actuating unit 4 drives the first power supply part 31 to move to the first position;

[0071] S4. The overhead crane then moves along the lifting track 2 to the fixed track 1 or along the fixed track 1 to the lifting track 2 under the power supply of the first power supply line 3 and / or the second power supply line 5.

[0072] In the initial state, the first power supply part 31 is located at the first position, and the first power supply part 31 is driven to move to the second position through the setting of step S1, so as to avoid the first power supply part 31 located at the first position interfering with the docking of the lifting track 2 and the fixed track 1 in step S2, thereby ensuring that the lifting track 2 is smoothly docked to the fixed track 1; and then the first power supply part 31 is driven to move back to the first position through the setting of step S3, so that the first power supply part 31 can power the overhead crane on the lifting track 2; finally, the transmission of the overhead crane between the lifting track 2 and the fixed track 1 is realized through step S4.

[0073] In some embodiments, in step S1, in the initial state, the first power supply part 31 is located at the first position, and the lifting track 2 is located below the fixed track 1; the drive motor 411 is started to make the two synchronous shafts 413 rotate synchronously, and the two transmission modules then drive the connecting rod 412 to move linearly, so that the connecting plate and the first power supply part 31 located on the connecting plate move to the second position. Similarly, in step S3, the drive motor 411 drives the connecting plate and the first power supply part 31 located on the connecting plate to move to the first position, so as to realize the power supply to the overhead traveling vehicle located on the lifting track 2.

[0074] In some embodiments, step S2 includes the following steps:

[0075] S21, raising the lifting track 2 to a level higher than the fixed track 1, and making the inner top wall of the locking groove 611 higher than the highest point on the surface of the push rod 63;

[0076] S22, the push rod 63 moves along the length direction of the fixed rail 1 toward the locking block 61, so that the push rod 63 enters the locking groove 611 or is located below the locking groove 611;

[0077] S23 , the lifting track 2 descends until the inner top wall of the locking groove 611 is pressed against the push rod 63 . At this time, the lifting track 2 is docked with the fixed track 1 .

[0078] In step S2, the docking position of the fixed rail 1 and the lifting rail 2 can be locked by the cooperation of the push rod 63 and the locking block 61, so as to avoid the displacement of the lifting rail 2 after the rail docking is completed; and during docking, the rail docking action is divided into two stages by the first rising or falling movement of the lifting rail 2, thereby reducing the requirements for the lifting and lowering accuracy of the lifting rail 2 during the docking process, and the final docking accuracy is achieved by the physical stopping of the locking block 61 by the push rod 63.

[0079] Furthermore, in step S21, in the initial state, the lifting track 2 is located below the fixed track 1, and the block 68 of the overhead crane stopper abuts against the fixed track 1; when the lifting track 2 rises under the drive of the lifting mechanism 7, the locking block 61 on the lifting track 2 can push the block 68 upward through the push rod 69 to make the block 68 disengage from the fixed track 1. In step S23, when the lifting track 2 is docked to the fixed track 1, the distance between the block 68 and the fixed track 1 is sufficient for the running wheels of the overhead crane to pass. This arrangement enables the block 68 to stop the overhead crane on the fixed track 1 when the lifting track 2 is not docked to the fixed track 1, so as to prevent the overhead crane from falling from the end of the fixed track 1; and when the lifting track 2 is docked to the fixed track 1, a distance can be left between the block 68 and the fixed track 1 to ensure that the running wheels of the overhead crane can run smoothly between the lifting track 2 and the fixed track 1.

[0080] It should be noted that when the push rod 63 disengages from the locking groove 611 and the lifting track 2 descends under the drive of the lifting mechanism 7, the locking block 61 can move downward synchronously with the lifting track 2. At this time, the top rod 69 of the overhead crane stopper is no longer subjected to the upward thrust force, and the stop block 68 and the stop slider 67 can move downward under the action of their own weight until the stop block 68 rests against the fixed track 1 again.

[0081] In some embodiments, in step S4, the power supply process of the overhead travelling vehicle moving from the lifting track 2 to the fixed track 1 is as follows:

[0082] When the crane is on the lifting track 2, the crane is in area A. At this time, the power supply of the crane relies on the first power supply unit 31 located in area A to supply power to provide the power required for the crane to move from area A to area D (i.e., the crane moves from the lifting track to the fixed track); as the crane moves to area D, the power supply of the crane can contact the first power supply line 3 and the second power supply line 5 at the same time. At this time, the first power supply line 3 and the second power supply line 5 both supply power to the power supply to provide the power required for the crane to move from area D to area B; as the crane moves to area B, Due to the arrangement of the redundant section 321 and the junction box 33 on the first power supply line 3, the power supply of the overhead crane cannot be in continuous contact with the first power supply line 3, but the power supply of the overhead crane is always in contact with the second power supply line 5. At this time, the second power supply line 5 can continuously supply power to the power supply to provide the power required for the overhead crane to move from area B to area C. As the overhead crane moves to area C, the power supply of the overhead crane contacts the first power supply line 3 and the second power supply line 5 again. At this time, the first power supply line 3 and the second power supply line 5 both supply power to the power supply to provide the power required for the overhead crane to move in area C. The configuration of the first power supply line 3 and the second power supply line 5 in different areas can provide stable power guarantee for the entire transmission of the overhead crane on the lifting track 2 and the fixed track 1, thereby ensuring the transmission stability of the overhead crane.

[0083] Similarly, the power supply process of the overhead travelling vehicle moving from the fixed track 1 to the lifting track 2 can refer to the power supply process of the overhead travelling vehicle moving from the lifting track 2 to the fixed track 1, which will not be described in detail here.

[0084] The above implementation modes are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A crane transmission system, characterized in that: include: Fixed track; A lifting track, the lifting track can be lifted and docked with the fixed track; A first power supply line, the first power supply line is used to supply power to the overhead travelling crane, and the first power supply line comprises a first power supply portion corresponding to the lifting track in the length direction thereof; an actuating unit, the actuating unit comprising an actuating mechanism and a wire fixture, the actuating mechanism being connected to the first power supply part through the wire fixture, so that the first power supply part can move between a first position and a second position in the width direction of the lifting track; in the first position, the first power supply part is located inside the lifting track; in the second position, the first power supply part is located outside the lifting track; The locking mechanism comprises a locking block and a locking member used in conjunction with each other, wherein the locking block is arranged on the lifting track and a locking groove is provided at the lower end thereof; the locking member is arranged on the fixed track and comprises a push rod which can be inserted into or out of the locking groove under the action of a locking driving member; The locking mechanism also includes a crown block stopper, which includes a stop rail, a stop slider, a stop block and a push rod. The stop rail is arranged in a vertical direction, and the stop slider is slidably arranged on it; the stop block is located at the end of the fixed rail and is fixedly connected to the stop slider; the push rod is suspended, and its upper end is connected to the stop block, and its lower end is aligned with the locking block; when the stop block is at the lowest position, the stop block can abut against the crown block located on the fixed rail.

2. The overhead travelling crane transmission system according to claim 1, characterized in that: When the lifting rail is docked to the fixed rail, the wire fixing member is located below the lifting rail.

3. The overhead travelling crane transmission system according to claim 1, characterized in that: The first power supply line further includes a second power supply portion corresponding to the fixed rail in the length direction thereof, and a redundant section is provided in an outwardly bent manner at one end of the second power supply portion facing the first power supply portion.

4. The overhead travelling crane transmission system according to claim 3, characterized in that: The second power supply part is a segmented structure connected into one piece through a junction box, and the junction box is located on a side of the redundant section away from the first power supply part.

5. The overhead travelling crane transmission system according to claim 1, characterized in that: It also includes a second power supply line spaced apart from the first power supply line in the width direction of the fixed track, the second power supply line and the first power supply line are respectively located on both sides of the overhead travelling vehicle, and when the overhead travelling vehicle is on the fixed track, the second power supply line always supplies power to the overhead travelling vehicle.

6. The overhead travelling crane transmission system according to claim 1, characterized in that: The push rod is connected to the locking driving member via an elastic member.

7. A crane transmission method, applicable to the crane transmission system according to any one of claims 1 to 6; characterized in that: The steps include: The actuating unit drives the first power supply part to move to the second position; The lifting track is connected to the fixed track; The actuating unit drives the first power supply part to move to the first position; The overhead travelling vehicle then moves along the lifting track to the fixed track or along the fixed track to the lifting track under the power supply of the first power supply line.

8. The overhead crane transmission method according to claim 7, characterized in that: The docking of the lifting track to the fixed track comprises the following steps: The lifting track rises to a position higher than the fixed track, and the inner top wall of the locking groove is higher than the highest point of the push rod surface; The push rod moves along the length direction of the fixed track toward the locking block, so that the push rod enters the locking groove or is located below the locking groove; The lifting track descends until the inner top wall of the locking groove is pressed against the push rod, at which time the lifting track is docked with the fixed track.

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