Track components

Abstract

The present invention discloses a track assembly, including a reversing track and a guide track, wherein the reversing track is used for the reversing movement of an overhead crane; the reversing track includes an inner track and an outer track, wherein the outer track surrounds the outer side of the inner track, and includes a first track segment, a slope segment, and a second track segment, wherein the upper end surface of the first track segment is lower than the upper end surface of the second track segment, and the first track segment and the second track segment are connected through the slope segment; the guide track is located above the reversing track, and is used to guide the overhead crane to move along the reversing track; when the overhead crane moves along the reversing track under the guidance of the guide track, the running wheels on one side of the overhead crane always contact the inner track, and the running wheels on the other side of the overhead crane never contact the first track segment. The present invention can improve the smoothness of the turning of the overhead crane.

Description

Technical Field

[0001] The invention relates to the technical field of semiconductor processing, and in particular to a track component. 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 working tracks, overhead cranes (OHTs) and control systems. The working tracks can form corresponding channel paths according to the layout of the process machines. The overhead cranes are controlled by the control system to move along the channels formed by the working tracks and transfer the wafers in the wafer boxes between the process machines.

[0003] In the prior art, the overhead crane needs to turn to enter different channels. During the turning process of the overhead crane, there is a change in the force direction. If the turning of the overhead crane is not smooth, it will cause vibration of the overhead crane and the wafer box on the overhead crane, which may easily cause damage to the overhead crane and the wafers in the wafer box. Summary of the invention

[0004] In order to overcome the above disadvantages, an object of the present invention is to provide a track assembly that can improve the smoothness of the turning of the overhead travelling vehicle.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is: a track assembly, comprising

[0006] A reversing track is used for the reversing movement of the overhead travelling vehicle; the reversing track comprises an inner track and an outer track, the outer track surrounds the outer side of the inner track, and comprises a first track segment, a slope segment, and a second track segment, the upper end surface of the first track segment is lower than the upper end surface of the second track segment, and the first track segment and the second track segment are connected via the slope segment;

[0007] A guide track, located above the reversing track, for guiding the overhead travelling vehicle to travel along the reversing track;

[0008] When the overhead travelling vehicle moves along the reversing track under the guidance of the guide track, the running wheels on one side of the overhead travelling vehicle always contact the inner track, and the running wheels on the other side of the overhead travelling vehicle never contact the first track segment.

[0009] Furthermore, one end of the reversing track close to the second track segment is connected to the first straight rail, and the slope segment is arranged close to the first straight rail.

[0010] Furthermore, the second track segment is connected to the first track segment to form a stepped structure; the slope segment is located on the first track segment, and its high end abuts against the second track segment.

[0011] Furthermore, the guide track includes a first guide bar arranged corresponding to the reversing track, one side of the first guide bar forms a first guide surface for guiding the overhead travelling vehicle, and the other side is tightened by a pushing assembly.

[0012] Further, the pushing assembly includes a fixed block, a pushing piece, and a locking nut. The pushing piece is threadedly inserted into the fixed block in a direction perpendicular to the first guide bar, and one end of the pushing piece faces the first guide bar, and the other end is threadedly mounted with the locking nut that can abut against the fixed block.

[0013] Furthermore, two reversing tracks are provided, the outer tracks of the two reversing tracks are connected and fixed, the inner tracks of the two reversing tracks close to each other are commonly connected to a second straight track, and a branch track is formed between the second straight track and the two reversing tracks.

[0014] Further, the guide track is located above the branch track, and includes a first guide bar and a second guide bar. The first guide bar is arranged in a one-to-one correspondence with the reversing track, and the second guide bar is arranged in a corresponding manner with the second straight rail; and the two sides of the second guide bar are respectively provided with second guide surfaces corresponding to and connected with the first guide surfaces of the two first guide bars.

[0015] Furthermore, all the first guide bars and the second guide bars together form a herringbone structure, and one end of the first guide bar facing the second guide bar is pivotally connected to the second guide bar.

[0016] Furthermore, it also includes a power supply component located below the reversing track, and the power supply component includes a first connecting plate, a second connecting plate, and a third connecting plate. The first connecting plate, the second connecting plate, and the third connecting plate together form a contoured fork that matches the shape of the fork, and the first connecting plate, the second connecting plate, and the third connecting plate are provided with a wire groove for accommodating the Litz wire on one side facing the contoured fork.

[0017] Furthermore, the third connecting plate includes a first plate body and a second plate body which are arranged in one-to-one correspondence with the two outer rails, the junction between the first plate body and the second plate body extends in the direction of the contoured fork, and the wire groove on the third connecting plate smoothly transitions at the junction between the first plate body and the second plate body.

[0018] Furthermore, an end of the guide rail close to the first straight rail is provided with a guide member extending out of the first straight rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a track assembly according to an embodiment of the present invention;

[0020] Figure 2 An exploded view of a track assembly according to an embodiment of the present invention;

[0021] Figure 3 for Figure 2 A partial enlarged view of the middle A area;

[0022] Figure 4 It is a schematic diagram of the structure of the reversing track in accordance with an embodiment of the present invention in cooperation with the first straight track and the second straight track;

[0023] Figure 5 It is a structural schematic diagram of a track assembly from another perspective of an embodiment of the present invention;

[0024] Figure 6 for Figure 5 Schematic diagram of the section along the AA direction;

[0025] Figure 7 for Figure 6 A partial enlarged view of the B area;

[0026] Figure 8 This is a schematic diagram of the structure of the guide rail according to an embodiment of the present invention;

[0027] Fig. 9 It is a schematic diagram of the structure of the power supply component according to an embodiment of the present invention.

[0028] In the figure:

[0029] 1-reversing track; 11-inner track; 12-outer track; 121-first track section; 122-slope section; 123-second track section;

[0030] 2-guide rail; 21-first guide bar; 211-first guide surface; 22-second guide bar; 221-second guide surface; 23-guide member;

[0031] 3-First straight track;

[0032] 4-Fixed plate;

[0033] Waist-shaped hole; 52-first fastener; 6-pushing assembly; 61-fixing block; 62-pressing piece; 63-locking nut;

[0034] 7- Second straight track;

[0035] 8-power supply assembly; 81-first connecting plate; 82-second connecting plate; 83-third connecting plate; 831-first plate body; 832-second plate body; 84-wire trough. 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 1-2 As shown, a track assembly of the present invention comprises a reversing track 1 and a guide track 2 located above the reversing track 1 , wherein the reversing track 1 is used for the reversing movement of the overhead travelling vehicle, and the guide track 2 is used for guiding the overhead travelling vehicle to move along the reversing track 1 .

[0039] The reversing track 1 generally includes an inner track 11 and an outer track 12 surrounding the outer side of the inner track 11, and a curve is formed between the inner track 11 and the outer track 12 for the overhead travelling vehicle to pass through. When the overhead travelling vehicle moves along the reversing track 1, the running wheels on one side of the overhead travelling vehicle (hereinafter referred to as "inner running wheels") can move along the inner track 11, and the running wheels on the other side (hereinafter referred to as "outer running wheels") can move along the outer track 12. Since the outer track 12 is arranged around the inner track 11, there will be a speed difference between the inner running wheels and the outer running wheels, which will cause sliding friction between the inner running wheels and the inner track 11 when the overhead travelling vehicle moves along the reversing track 1, thereby causing the inner running wheels to wear and produce particles and vibration.

[0040] Based on this, in some embodiments, see the attached Figure 2-4 As shown, the outer track 12 includes a first track segment 121, a slope segment 122, and a second track segment 123. The upper end surface of the first track segment 121 is lower than the upper end surface of the second track segment 123, and the first track segment 121 and the second track segment 123 are connected and transitioned through the slope segment 122. When the overhead travelling vehicle moves along the reversing track 1, the inner running wheel always contacts the inner track 11, and the outer running wheel never contacts the first track segment 121. In other words, when the overhead travelling vehicle moves along the reversing track 1 to the position of the first track segment 121, the inner running wheel moves along the inner track 11, while the outer running wheel is in a suspended state. At this time, the outer running wheel can maintain the same rotation speed as the inner running wheel, thereby not causing sliding friction between the inner running wheel and the inner track 11, and not causing the problem of wear of the inner running wheel due to sliding friction to produce particles and vibration.

[0041] The upper end surface of the ramp section 122 is an inclined surface, and the lower end of the inclined surface smoothly transitions to the upper end surface of the first track section 121, and the upper end of the inclined surface smoothly transitions to the upper end surface of the second track section 123. When the overhead travelling vehicle moves from the first track section 121 to the second track section 123, the outer running wheel first suspends on the outer track 12 at the position of the first track section 121, then gradually contacts the outer track 12 via the ramp section 122, and finally always contacts the outer track 12 at the position of the second track section 123. Conversely, when the overhead travelling vehicle moves from the second track section 123 to the first track section 121, the outer running wheel first suspends on the outer track 12 at the position of the second track section 123, then gradually suspends on the outer track 12 via the ramp section 122, and finally always suspends on the outer track 12 at the position of the first track section 121. It can be understood that the provision of the slope section 122 can enable the outer running wheel to smoothly transition between a state of being suspended above the outer track 12 and a state of being in contact with the outer track 12 .

[0042] In addition, because the outer running wheels are in a suspended state on the first track section 121 and part of the slope section 122, it is difficult to ensure the stability of the overhead crane by relying solely on the contact between the inner running wheels and the inner track 11. Therefore, when the overhead crane is moving along the first track section 121 and the slope section 122, it needs to be guided by the guide track 2.

[0043] Furthermore, the second track segment 123 is arranged at the end of the outer track 12, and its curvature is close to 0. This arrangement allows the first track segment 121 to occupy most of the length of the outer track 12, so that the suspended path of the outer running wheel on the outer track 12 is longer, so as to avoid as much as possible the sliding friction between the reversing track 1 caused by the speed difference between the inner running wheel and the outer running wheel when the overhead crane is reversing. Since the curvature of the second track segment 123 is close to 0, when the outer running wheel travels on the second track segment 123, its travel direction can be close to a straight line. At this time, the speed difference between the inner running wheel and the outer running wheel is relatively small, and the sliding friction caused by the speed difference is also relatively small.

[0044] In some embodiments, see Appendix Figure 4 As shown, the end of the reversing track 1 close to the second track segment 123 is connected to the first straight track 3, and the overhead travelling vehicle can enter the first straight track 3 and travel in a straight line after reversing through the reversing track 1. Specifically, the first straight track 3 includes two straight track bodies connected to the inner track 11 and the second track segment 123 in a one-to-one correspondence. When the overhead travelling vehicle moves onto the first straight track 3 along the reversing track 1, the inner running wheels and the outer running wheels of the overhead travelling vehicle can travel onto the two straight track bodies along the inner track 11 and the second track segment 123, respectively.

[0045] During the process of the overhead travelling vehicle reversing (turning) along the reversing track 1, once the outer running wheel contacts the outer track 12, a speed difference will be generated between the inner running wheel and the outer running wheel. Based on the consideration of completely eliminating this speed difference, the slope section 122 should be directly set on the first straight track 3. At this time, when the overhead travelling vehicle moves along the reversing track 1, the outer running wheel can always be suspended on the outer track 12. However, this will cause the guide track 2 to extend above the first straight track 3, which not only increases the layout length of the guide track 2, but also causes the outer running wheel to be difficult to stably contact the straight track body when the overhead travelling vehicle just moves onto the first straight track 3 due to the guiding effect of the guide track 2 on the overhead travelling vehicle. Therefore, in actual application, the slope section 122 is set on the outer track 12, and the curvature of the second track section 123 is close to 0, so that the slope section 122 is set as close to the first straight track 3 as possible, but is not located on the first straight track 3.

[0046] In some embodiments, see Appendix Figure 3 As shown, the second track segment 123 is connected to the first track segment 121 to form a stepped structure. The slope segment 122 is fixedly mounted on the upper end of the first track segment 121, and its upper end abuts against the second track segment 123. By using the abutment and limiting of the slope segment 122 by the second track segment 123, the phenomenon of the slope segment 122 sliding toward the second track segment 123 due to the outer running wheel contacting the slope segment 122 can be avoided during the process of the outer running wheel moving from the first track segment 121 to the second track segment 123.

[0047] Since the lower end of the slope segment 122 needs to smoothly transition with the upper end surface of the first track segment 121, the thickness of the lower end of the slope segment 122 should be as thin as possible. In order to ensure the stable connection between the slope segment 122 and the first track segment 121, in some embodiments, a threaded hole that passes through the first track segment 121 is opened, and a blind hole corresponding to the threaded hole is opened at the lower end of the slope segment 122. The screw can be threadedly locked in the blind hole through the threaded hole. At this time, the slope segment 122 can be installed on the first track segment 121 by screw locking, and the upper end surface of the slope segment 122 will not be affected by the installation.

[0048] In order to cooperate with the guide rail 2 to guide the reversing of the overhead crane, the overhead crane is usually provided with a reversing wheel, which is located above the running wheel and between the inner running wheel and the outer running wheel. When the overhead crane travels along the reversing rail 1, the reversing wheel can contact the guide rail 2 and be guided by the guide rail 2 to drive the overhead crane to reverse.

[0049] When the overhead travelling crane is reversing, the reversing track 1 provides vertical support for the overhead travelling crane. In order to avoid the vertical force change of the overhead travelling crane caused by the vertical guidance of the guide track 2, in some embodiments, the guide track 2 guides the overhead travelling crane in the lateral direction (horizontal direction). Figure 5-6As shown, the guide track 2 includes a first guide bar 21 corresponding to the reversing track 1. The first guide bar 21 is installed on the fixed plate 4 through a fine-tuning component, and one side of the first guide bar 21 forms a first guide surface 211 for the reversing wheel to abut against.

[0050] During the reversing process of the overhead travelling crane, the inner running wheel is always in contact with the inner track 11, and the outer running wheel is suspended in the air at the position of the first track section 121. At this time, due to the contact between the reversing wheel and the first guide surface 211, the first guide surface 211 can support the reversing wheel to avoid the overturning of the overhead travelling crane caused by the suspension of the outer running wheel. When the outer running wheel moves to the slope section 122, the outer running wheel gradually contacts the slope section 122, and the slope section 122 can gradually support the outer running wheel. At this time, the reversing The outer wheel still abuts against the first guide surface 211, and the first guide surface 211 can still support the reversing wheel; when the outer running wheel moves onto the second track segment 123, the outer running wheel always contacts the second track segment 123, and the second track segment 123 can support the outer running wheel. At this time, due to the support of the inner track 11 and the second track segment 123 to the overhead travelling vehicle, the overhead travelling vehicle can maintain stable travel. Therefore, when on the second track segment 123, the overhead travelling vehicle does not need the guidance and support of the first guide surface 211. In other words, when the first guide strip 21 is arranged, the first guide strip 21 must at least cover the first track segment 121 and the top of the slope segment 122 to ensure that the overhead travelling vehicle can always be guided and supported by the first guide strip 21 when walking on the first track segment 121 and the slope segment 122.

[0051] In some embodiments, see Appendix Figure 6-7 As shown, the fine-tuning assembly includes a waist-shaped hole 51 and a first fastener 52 (such as a screw), and the waist-shaped hole 51 is opened on the first guide bar 21. The fixing plate 4 is located above the guide rail 2 and is hoisted and fixed, and the fixing plate 4 is provided with a first threaded hole corresponding to the position of the waist-shaped hole 51. The first fastener 52 is inserted into the waist-shaped hole 51 and can be locked in the first threaded hole. The setting of the fine-tuning assembly not only realizes the connection between the first guide bar 21 and the fixing plate 4, but also can fine-tune the position of the first guide bar 21 to ensure the accuracy of the guiding direction of the first guide bar 21.

[0052] However, this connection method has the risk of the connection being easily loosened, especially when the first guide surface 211 guides the reversing wheel, the first guide strip 21 will gradually deviate from the preset position due to the pressure of the reversing wheel on the first guide surface 211. When the overhead travelling vehicle is guided by the deviated first guide strip 21, the overhead travelling vehicle will tilt toward the outer track 12, causing the overhead travelling vehicle to contact the outer track 12 at the position of the first track section 121, resulting in a speed difference between the outer running wheel and the inner running wheel and causing track sliding friction. At the same time, when the outer running wheel moves to the slope section 122, it will be lifted, and the slope section 122 will impact the outer running wheel and cause vibration of the overhead travelling vehicle. For this reason, in some embodiments, the side of the first guide strip 21 away from the first guide surface 211 is tightened by the push assembly 6.

[0053] See attached Figure 6-7 As shown, the pushing assembly 6 includes a fixed block 61, a pushing piece 62, and a locking nut 63. The fixed block 61 is fixedly connected to the fixed plate 4. The pushing piece 62 is threadedly inserted into the fixed block 61 in a direction perpendicular to the first guide bar 21, and one end of the pushing piece 62 faces the first guide bar 21, and the other end is threadedly mounted with a locking nut 63 that can abut against the fixed block 61.

[0054] When the position of the first guide bar 21 deviates, the first fastener 52 and the locking nut 63 are loosened, and the pressing member 62 is rotated to move the pressing member 62 toward the first guide bar 21, and the first guide bar 21 can be moved to the preset position under the pushing of the pressing member 62; then the locking nut 63 is tightened to abut against the fixing block 61, and finally the first fastener 52 is tightened. Since the pressing member 62 is pressed against the first guide bar 21 from the side away from the first guide surface 211, when the first guide surface 211 is squeezed by the reversing wheel, the pressing action of the pressing member 62 on the first guide bar 21 can offset part of the pressure of the reversing wheel, thereby delaying the deviation of the first guide bar 21.

[0055] It should be noted that there are multiple fine-tuning assemblies and multiple push assemblies 6 , which are arranged in sequence along the guiding direction of the first guide strip 21 .

[0056] In actual working conditions, due to the different positions and layouts of process machines, the overhead crane needs to switch to different directions through the fork. Accordingly, the track assembly also needs to cooperate with multiple reversing tracks 1 to realize the reversing movement of the overhead crane in different directions. Figure 4As shown, two reversing rails 1 are provided, and the ends of the outer rails 12 of the two reversing rails 1 close to each other are connected and fixed, and the ends of the inner rails 11 of the two reversing rails 1 close to each other are commonly connected to the second straight rail 7, and the second straight rail 7 and the two reversing rails 1 jointly form a fork. When the overhead travelling vehicle moves along the second straight rail 7 toward the fork, the overhead travelling vehicle can be reversed via any reversing rail 1. It should be noted that the structure of the second straight rail 7 can refer to the structure of the first straight rail 3.

[0057] Accordingly, see Appendix Figure 7 As shown, the guide track 2 includes a first guide bar 21 that is arranged in a one-to-one correspondence with the two reversing tracks 1. Due to the setting of the branch track, there is a gap between the outer track 12 of the reversing track 1 and the second straight track 7 (that is, the inner track 11 is connected to one straight track body of the second straight track 7, and there is a gap between the outer track 12 and the other straight track body of the second straight track 7, and they are not connected. When the overhead travelling vehicle moves to the gap, the inner running wheel contacts the inner track 11, while the outer running wheel is in a suspended state. Therefore, in order to ensure the stable movement of the overhead travelling vehicle at the gap, the first guide bar 21 of the guide track 2 needs to extend to the top of the gap to guide the movement of the overhead travelling vehicle at the gap.

[0058] Since the first guide bar 21 is arranged above the reversing track 1, that is to say, when the overhead travelling vehicle just enters the reversing track 1 from the second straight track 7, the reversing wheel of the overhead travelling vehicle is just in contact with the first guide bar 21, and the outer running wheel of the overhead travelling vehicle is in a suspended state. If the reversing wheel of the overhead travelling vehicle does not contact the first guide bar 21 in time or smoothly, the overhead travelling vehicle may vibrate. Based on this, in some embodiments, see the attached Figure 7-8 As shown, the guide track 2 further includes a second guide bar 22 located above the second straight rail 7 , and second guide surfaces 221 are respectively provided on both sides of the second guide bar 22 and are in one-to-one correspondence with the first guide surfaces 211 of the two first guide bars 21 .

[0059] Since the overhead travelling vehicle moves along a straight line on the second straight rail 7, the travelling of the overhead travelling vehicle is relatively stable. Therefore, the introduction of the second guide bar 22 to guide the overhead travelling vehicle at the second straight rail 7 will not affect the stable travelling of the overhead travelling vehicle. Furthermore, by setting the second guide surface 221 corresponding to the first guide surface 211 of the first guide bar 21, the reversing wheel can be abutted against the corresponding second guide surface 221 in advance during the process of the overhead travelling vehicle moving along the second straight rail 7 according to the reversing requirements of the overhead travelling vehicle. Then, when the overhead travelling vehicle moves from the second straight rail 7 to any reversing rail 1, the reversing wheel of the overhead travelling vehicle can smoothly enter the first guide surface 211 through the connection between the second guide surface 221 and the first guide surface 211, thereby ensuring the stability of the reversing guidance of the overhead travelling vehicle by the first guide bar 21.

[0060] According to the shape of the fork, the two first guide bars 21 and the second guide bar 22 can roughly form a "human" shaped structure. However, the "human" shaped structure is not easy to process, and it is difficult to adjust the guide position of the two first guide bars 21 according to the reversing requirements of the overhead travelling vehicle after installation. Based on this, in some embodiments, the first guide bar 21 and the second guide bar 22 adopt a split structure. And one end of the first guide bar 21 facing the second guide bar 22 is pivoted to the second guide bar 22. The split structure is more conducive to the processing of the guide rail 2, and the first guide bar 21 and the second guide bar 22 are pivotally connected, which can avoid the formation of a step at the intersection of the first guide surface 211 of the first guide bar 21 and the second guide surface 221 of the second guide bar 22 when adjusting the position of the first guide bar 21, so as to avoid vibration when the reversing wheel of the overhead travelling vehicle moves from the first guide surface 211 to the second guide surface 221 (or from the second guide surface 221 to the first guide surface 211).

[0061] In some embodiments, see Appendix Figure 6 As shown, one end of the first guide bar 21 away from the second guide bar 22 is provided with a guide member 23 extending out of the first straight rail 3. The arrangement of the guide member 23 can guide the linear movement of the overhead travelling vehicle after it travels to the first straight rail 3.

[0062] In some embodiments, see Appendix Figure 1 , Figure 2 , Fig. 9 As shown, a power supply assembly 8 is provided below the reversing track 1, and the power supply assembly 8 includes a first connecting plate 81, a second connecting plate 82, and a third connecting plate 83. The first connecting plate 81, the second connecting plate 82, and the third connecting plate 83 together form a contoured fork that matches the shape of the fork, and the first connecting plate 81, the second connecting plate 82, and the third connecting plate 83 are provided with a wire groove 84 for accommodating the Litz wire on one side facing the contoured fork.

[0063] In order to facilitate the description of the power-taking process of the overhead crane, the "commutation track" on the left side of the figure is called the "first commutation track", and the "commutation track" on the right side of the figure is called the "second commutation track". When the overhead crane is moving on the second straight rail 7, the overhead crane can simultaneously draw power from the Litz wires on the first connecting plate 81 and the second connecting plate 82. At this time, the overhead crane is in a state of double-sided power taking; when the overhead crane is moving from the second straight rail 7 to the first commutation track (or the second commutation track), when the outer running wheel of the overhead crane moves to the gap, the outer running wheel of the overhead crane is in a suspended state. At this time, the overhead crane can draw power from the Litz wire of the first connecting plate 81 (or the second connecting plate 82), and the overhead crane is in a state of single-sided power taking; when the outer running wheel of the overhead crane moves to the outer track 12, the overhead crane can simultaneously draw power from the Litz wires of the first connecting plate 81 (or the second connecting plate 82) and the third connecting plate 83. That is to say, when the overhead crane is reversing, it only draws power on one side at the gap of the branch track, and draws power on both sides at other positions. This can enhance the reliability of power supply during the reversing process of the overhead crane.

[0064] For further information, see Appendix Fig. 9 As shown, the third connecting plate 83 includes a first plate 831 and a second plate 832 which are arranged in a one-to-one correspondence with the two outer rails 12. The first plate 831 and the second plate 832 are connected and fixed at one end close to each other, and the junction of the first plate 831 and the second plate 832 extends in the direction of the profiling fork. Correspondingly, the wire groove 84 on the third connecting plate 83 is smoothly transitioned at the junction of the first plate 831 and the second plate 832. This arrangement allows the wire groove 84 at the junction of the first plate 831 and the second plate 832 to approach the direction of the profiling fork. When the Litz wire is arranged in the wire groove 84 of the third connecting plate 83, when the overhead travelling vehicle moves at the gap to approach the third connecting plate 83, it can contact the Litz wire on the third connecting plate 83, thereby realizing the double-sided power supply of the overhead travelling vehicle at the gap. That is to say, when the overhead travelling crane is moving at the gap, it can draw power from both sides in the area close to the third connecting plate 83, thereby improving the reliability of drawing power at the gap and reducing the risk of the overhead travelling crane staying at the gap due to insufficient power.

[0065] 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 track assembly, characterized in that: include A reversing track is used for the reversing movement of the overhead travelling vehicle; the reversing track comprises an inner track and an outer track, the outer track surrounds the outer side of the inner track, and comprises a first track segment, a slope segment, and a second track segment, the upper end surface of the first track segment is lower than the upper end surface of the second track segment, and the first track segment and the second track segment are connected through the slope segment, and the second track segment is connected to the first track segment to form a stepped structure; the slope segment is located on the first track segment, and its high end abuts against the second track segment; A guide track, located above the reversing track, for guiding the overhead travelling vehicle to travel along the reversing track; When the overhead travelling vehicle moves along the reversing track under the guidance of the guide track, the running wheels on one side of the overhead travelling vehicle always contact the inner track; the running wheels on the other side of the overhead travelling vehicle never contact the first track segment and always contact the outer track at the position of the second track segment.

2. The track assembly according to claim 1, characterized in that: One end of the reversing track close to the second track section is connected to the first straight rail, and the slope section is arranged close to the first straight rail.

3. The track assembly according to claim 1, characterized in that: The guide track comprises a first guide bar arranged corresponding to the reversing track, one side of the first guide bar forms a first guide surface for guiding the overhead travelling vehicle, and the other side of the first guide bar is tightened by a pushing assembly.

4. The track assembly according to claim 3, characterized in that: The pushing assembly includes a fixed block, a pushing piece, and a locking nut. The pushing piece is threadedly inserted into the fixed block in a direction perpendicular to the first guide bar, and one end of the pushing piece faces the first guide bar, and the other end is threadedly mounted with the locking nut that can abut against the fixed block.

5. The track assembly according to claim 1, characterized in that: Two reversing tracks are provided, the outer tracks of the two reversing tracks are connected and fixed, the inner tracks of the two reversing tracks close to each other are commonly connected to a second straight track, and a fork is formed between the second straight track and the two reversing tracks.

6. The track assembly according to claim 5, characterized in that: The guide track is located above the branch track, and includes a first guide bar and a second guide bar. The first guide bar is arranged in a one-to-one correspondence with the reversing track, and the second guide bar is arranged in a corresponding manner with the second straight rail; and second guide surfaces corresponding to and connected to the first guide surfaces of the two first guide bars are respectively arranged on both sides of the second guide bar.

7. The track assembly according to claim 6, characterized in that: All of the first guide bars and the second guide bars together form a herringbone structure, and one end of the first guide bar facing the second guide bar is pivotally connected to the second guide bar.

8. The track assembly according to claim 5, characterized in that: It also includes a power supply component located below the reversing track, the power supply component includes a first connecting plate, a second connecting plate, and a third connecting plate, the first connecting plate, the second connecting plate, and the third connecting plate together form a contoured fork that matches the shape of the fork, and the first connecting plate, the second connecting plate, and the third connecting plate are all provided with a wire groove for accommodating the Litz wire on one side facing the contoured fork.

9. The track assembly according to claim 8, characterized in that: The third connecting plate includes a first plate body and a second plate body which are arranged in one-to-one correspondence with the two outer rails. The junction between the first plate body and the second plate body extends in the direction of the contoured fork, and the wire groove on the third connecting plate smoothly transitions at the junction between the first plate body and the second plate body.

10. The track assembly according to claim 2, characterized in that: A guide member extending out of the first straight rail is provided at one end of the guide rail close to the first straight rail.

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