Crown block travelling device with emergency auxiliary mechanism

Abstract

The application provides a crown block walking device with an emergency auxiliary mechanism, which comprises a rear walking mechanism and a first emergency auxiliary mechanism, the first emergency auxiliary mechanism being connected with the rear walking mechanism; the rear walking mechanism comprises rear walking wheels and a first driving mechanism, the first driving mechanism being used for driving the rear walking wheels to walk on a track; the first driving mechanism comprises a band brake mechanism, the band brake mechanism being used for locking the rear walking wheels, the first emergency auxiliary mechanism comprising a first extension piece and a first auxiliary wheel connected with each other; when the rear walking wheels are locked by the band brake mechanism, the first extension piece is used for separating the rear walking mechanism from the track and making the first auxiliary wheel contact the track, and the first auxiliary wheel is used for walking along the track. The mechanism can enable the first auxiliary wheel after the rear walking wheels are locked, facilitates moving the crown block to a maintenance area through the first auxiliary wheel, and realizes quick escape of the crown block.

Description

Technical Field

[0001] This application relates to the field of semiconductor wafer transport equipment technology, and in particular to a crane traveling device with an emergency auxiliary mechanism. Background Technology

[0002] Overhead Hoist Transport (OHT) is a type of automated guided vehicle (AGV) primarily used for the automated transport of wafer fowl (FOUP) between machines within cleanrooms. The OHT travels on a track at the top of the cleanroom using rollers 10 (see reference). Figure 1 Its walking mechanism consists of a drive motor, a drive unit, and a reduction gear, and is the only force-bearing and walking execution component of the whole machine.

[0003] The overhead crane uses cable power supply via guide rail 20. If it detaches from guide rail 20 or the power supply is interrupted, the crane will immediately lose power. Simultaneously, the crane's traveling mechanism only has a reducer on the rear wheel, and the reducer integrates a brake function. In the event of a power outage or equipment failure, the roller 10 brake will automatically lock, preventing the crane from moving automatically. An external dedicated power supply must be connected via wired connection to release the motor brake. When a single overhead crane malfunctions and blocks guide rail 20, it will directly cause the entire guide rail 20 production line to stop operating. Troubleshooting requires at least three personnel working together, and troubleshooting a single crane malfunction is time-consuming, severely impacting production capacity.

[0004] Therefore, for those skilled in the art, how to design a traveling device that can move the overhead crane after the overhead crane brake is locked is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] The present invention provides a crane traveling device with an emergency auxiliary mechanism. This mechanism can activate the first auxiliary wheel after the rear traveling wheel is locked, so as to facilitate the crane to be moved to the maintenance area via the first auxiliary wheel, thereby achieving the rapid extrication of the crane from trouble.

[0006] To achieve the above objectives, this application provides a crane traveling device with an emergency auxiliary mechanism, including a rear traveling mechanism and a first emergency auxiliary mechanism, wherein the first emergency auxiliary mechanism is connected to the rear traveling mechanism;

[0007] The rear traveling mechanism includes a rear traveling wheel and a first drive mechanism. The first drive mechanism is used to drive the rear traveling wheel to travel on the track. The first drive mechanism includes a brake mechanism, which is used to lock the rear traveling wheel.

[0008] The first emergency auxiliary mechanism includes a first telescopic member and a first auxiliary wheel connected to each other; when the rear running wheel is locked by the brake mechanism, the first telescopic member is used to separate the rear running mechanism from the track and to make the first auxiliary wheel contact the track, and the first auxiliary wheel is used to travel along the track.

[0009] Optionally, the first telescopic component is configured as a jack, which has a retracted state and a lifting state. When the jack is in the retracted state, the first auxiliary wheel is separated from the track, and the rear traveling wheel is used to travel along the track.

[0010] When the rear traveling wheel is locked by the brake mechanism, the jack is used to switch from the retracted state to the lifting state; when the jack is in the lifting state, the rear traveling wheel is separated from the track by the jack, and the first auxiliary wheel is in contact with the track by the jack and is used to travel along the track.

[0011] Optionally, the first emergency auxiliary mechanism includes a support plate, which is fixed above the jack and connected to the rear walking mechanism.

[0012] Optionally, the rear walking mechanism includes a mounting base, the first drive mechanism and all the rear walking wheels are fixed below the mounting base, and the support plate is connected to the mounting base and located on the same horizontal plane.

[0013] Optionally, the total height of the jack and the first auxiliary wheel in the lifting state is greater than the outer diameter of the rear running wheel; the total height of the jack and the first auxiliary wheel in the retracted state is less than the outer diameter of the rear running wheel.

[0014] Optionally, when the jack is in the lifting state, the vertical distance between the rear traveling wheel and the track is 1~5mm.

[0015] Optionally, there are two first auxiliary wheels and two tracks, with each first auxiliary wheel corresponding to one track; there is one first telescopic member, which is used to synchronously drive the two first auxiliary wheels to move in the vertical direction, and the two first auxiliary wheels are at the same fixed height on the first telescopic member.

[0016] Optionally, the first emergency auxiliary mechanism further includes two connecting rods, with each of the first auxiliary wheels connected to the first telescopic member via a corresponding connecting rod.

[0017] Optionally, there are two of each of the first auxiliary wheel, the first telescopic member, and the track. Each first auxiliary wheel corresponds to a corresponding track and is connected to a corresponding first telescopic member. The two first telescopic members synchronously drive the corresponding first auxiliary wheel to move in the vertical direction, and the two first auxiliary wheels have the same fixed height on the corresponding first telescopic member.

[0018] Optionally, the crane traveling device also includes a forward traveling mechanism and a second emergency auxiliary mechanism, wherein the second emergency auxiliary mechanism is connected to the forward traveling mechanism;

[0019] The forward traveling mechanism includes a front traveling wheel and a second drive mechanism, the second drive mechanism being used to drive the front traveling wheel to travel on the track;

[0020] The second emergency auxiliary mechanism includes a second telescopic member and a second auxiliary wheel connected to each other; when the rear running wheel is locked by the brake mechanism, the second telescopic member is used to separate the front running mechanism from the track and to make the second auxiliary wheel contact the track, and the second auxiliary wheel is used to travel along the track; the structure of the second emergency auxiliary mechanism is the same as that of the first emergency auxiliary mechanism.

[0021] This invention provides a crane traveling device with an emergency auxiliary mechanism. When the rear traveling wheel of the crane is locked, the mechanism can change the height of the first auxiliary wheel through the first telescopic member. The operator can activate the first auxiliary wheel to push the crane to the maintenance area, realize the rapid extrication of the crane, and improve the efficiency of crane fault handling. Attached Figure Description

[0022] Figure 1 This is a front view structural diagram of the overhead crane traveling mechanism in the prior art.

[0023] Figure 2 This is a front view structural diagram of the overhead crane traveling device in one embodiment of this application.

[0024] Figure 3 This is a top view of the overhead crane traveling device in one embodiment of this application.

[0025] Figure 4 This is a schematic diagram of the structure of the first emergency auxiliary mechanism and the track in one embodiment of this application, wherein the first auxiliary wheel is separated from the track.

[0026] Figure 5 This is a schematic diagram of the structure of the first emergency auxiliary mechanism and the track in another embodiment of this application, wherein the first auxiliary wheel is in contact with the track.

[0027] The reference numerals in the attached figures are explained as follows:

[0028] 10 rollers; 20 guide rails;

[0029] Rear walking mechanism 1; rear running wheel 11; first drive mechanism 12; mounting base 13; first emergency auxiliary mechanism 2; first telescopic component 21; first auxiliary wheel 22; support plate 23; connecting rod 24; track 3; boom 31; front walking mechanism 4; front running wheel 41; second drive mechanism 42. Detailed Implementation

[0030] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present application will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present application.

[0031] The terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the mechanism or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the components; they can refer to a direct connection or a connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] like Figures 2-5 As shown, one embodiment of this application provides a crane traveling device with an emergency auxiliary mechanism for traveling on track 3. The crane traveling device includes a rear traveling mechanism 1 and a first emergency auxiliary mechanism 2, which is connected to the rear traveling mechanism 1. The rear traveling mechanism 1 includes a plurality of rear traveling wheels 11 and a first drive mechanism 12, which drives the rear traveling wheels 11 to travel on track 3. The first drive mechanism 12 includes a brake mechanism (not shown), which locks the rear traveling wheels 11 under certain circumstances (e.g., power outage or malfunction) to prevent the rear traveling wheels 11 from continuing to rotate, at which point the crane stops moving on track 3.

[0034] Furthermore, the first emergency auxiliary mechanism 2 includes a first telescopic member 21 and a first auxiliary wheel 22 connected to each other. When the rear travel wheel 11 is locked by the brake mechanism, the first telescopic member 21 is used to separate the rear travel mechanism 1 from the track 3 and to make the first auxiliary wheel 22 contact the track 3, and the first auxiliary wheel 22 is used to travel along the track 3.

[0035] Reference Figure 1 As shown, in existing technology, overhead cranes rely on rollers 10 to move along guide rails 20 on the cleanroom ceiling to transport wafer transfer boxes. The rollers 10 are driven by a motor and a reducer, and the weight and force of the overhead crane are supported by the rollers 10. The overhead crane is powered through cables on the guide rails 20, and power is cut off when the crane leaves the guide rails 20. The overhead crane relies on a rear wheel brake mechanism and a reducer for braking, and only the rear wheels have both a brake mechanism and a reducer. If the overhead crane loses power or malfunctions, the brake mechanism automatically locks the rear wheels. Once locked, the overhead crane cannot be pushed or dragged; it must be connected to an external dedicated power supply via wired connection to release the brake mechanism and move the crane. However, the process of unlocking, wiring, and moving the overhead crane is complex, time-consuming, and inefficient.

[0036] This application provides a crane traveling device with an emergency auxiliary mechanism. When the crane loses power or the traveling wheels malfunction, the mechanism can change the height of the first auxiliary wheel 22 through the first telescopic member 21. The operator can activate the first auxiliary wheel 22 to push the crane to the maintenance area, thereby achieving rapid crane extrication and improving the efficiency of crane fault handling.

[0037] Specifically, this application, by setting up a first emergency auxiliary mechanism 2, can avoid the wear caused by resistance generated when the rear traveling wheel 11 contacts the track 3 during emergency use, and can also avoid the problem of abnormal joints caused by activating the brake mechanism through power supply and cables. At the same time, the first emergency auxiliary mechanism 2 is a mechanical mechanism, and using the first emergency auxiliary mechanism 2 to move the overhead crane can shorten the handling time of the overhead crane failure by at least 50%, and can also significantly reduce the failure rate during overhead crane handling, thereby improving the safety and reliability of overhead crane failure handling.

[0038] Furthermore, the track 3 can be fixed to the ceiling via the hanger 31, allowing the crane to travel below the ceiling.

[0039] In addition, the crane traveling device also includes a front traveling mechanism 4, which includes a front traveling wheel 41 and a second drive mechanism 42. The second drive mechanism 42 is used to drive the front traveling wheel 41 to travel on the track 3.

[0040] Generally, the second drive mechanism 42 is not equipped with a brake mechanism. In this case, the crane only needs to brake the rear traveling wheel 11 through the brake mechanism, without needing to brake the front traveling wheel 41. In this application, the first emergency auxiliary mechanism 2 is fixed to the rear traveling mechanism 1. So that after the rear traveling wheel 11 is locked by the brake mechanism, the first telescopic member 21 of the first emergency auxiliary mechanism 2 can extend. At this time, the crane uses the first auxiliary wheel 22 to replace the rear traveling wheel 11 and cooperate with the front traveling wheel 41, thereby realizing travel on the track 3.

[0041] In a further preferred embodiment, the crane traveling device also includes a second emergency auxiliary mechanism (not shown), which is connected to the front traveling mechanism 4. The second emergency auxiliary mechanism includes a second telescopic member and a second auxiliary wheel (not shown) connected to it. When the rear traveling wheel 11 is locked by the brake mechanism, the second telescopic member is used to separate the front traveling mechanism 41 from the track 3 and to bring the second auxiliary wheel into contact with the track 3. The second auxiliary wheel is used to travel along the track 3, replacing the contact between the front traveling wheel 41 and the track 3.

[0042] More specifically, the second telescopic member can extend and retract synchronously with the first telescopic member 21. When the first telescopic member 21 and the second telescopic member are in the retracted state, both the first auxiliary wheel 22 and the second auxiliary wheel are separated from the track 3, and the crane travels along the track 3 via the front traveling wheel 41 and the rear traveling wheel 11.

[0043] When the rear traveling wheel 11 is locked by the brake mechanism, the first telescopic member 21 and the second telescopic member are used to extend synchronously, so that the front traveling wheel 41 is separated from the track 3 under the drive of the second telescopic member, and the rear traveling wheel 11 is separated from the track 3 under the drive of the first telescopic member 21. At this time, the crane travels along the track 3 through the first auxiliary wheel 22 and the second auxiliary wheel.

[0044] It should be understood that when the crane traveling device has a second emergency auxiliary mechanism, the first auxiliary wheel 22 of the first emergency auxiliary mechanism 2 can move in place of the rear traveling wheel 11, and the second auxiliary wheel of the second emergency auxiliary mechanism can move in place of the front traveling wheel 41. At this time, the crane can travel through the first auxiliary wheel 22 and the second auxiliary wheel.

[0045] Since the structure of the front traveling mechanism 4 is the same as that of the rear traveling mechanism 1, except that the front traveling mechanism 4 is not equipped with a brake mechanism, it is preferable to make the structure of the second emergency auxiliary mechanism the same as that of the first emergency auxiliary mechanism 2, so that the second auxiliary wheel of the second emergency auxiliary mechanism can replace the front traveling wheel 41 to move when the front traveling mechanism 4 fails.

[0046] In addition, the crane traveling device may not be equipped with a second emergency auxiliary mechanism. In this case, when the rear traveling wheel 11 cannot rotate, the first auxiliary wheel 22 of the first emergency auxiliary mechanism 2 can replace the rear traveling wheel 11 to travel on the track 3. At this time, the crane can move through the first auxiliary wheel 22 and its own front traveling wheel 41.

[0047] Continue to refer to Figure 4 and Figure 5 The first telescopic component 21 is configured as a jack (e.g., a screw jack), which has a retracted state and a lifting state. When the jack is in the retracted state, the first auxiliary wheel 22 is separated from the track 3, and the rear traveling wheel 11 is used to travel along the track 3, i.e., the crane travels via the rear traveling wheel 11. At this time, the first emergency auxiliary mechanism 2 is suspended on the rear traveling mechanism 1. When the crane's rear traveling wheel 11 travels on the track 3, the crane drives the first emergency auxiliary mechanism 2 to move synchronously, and the first emergency auxiliary mechanism 2 does not affect the normal operation of the crane.

[0048] When the rear traveling wheel 11 is locked by the brake mechanism, the jack is used to switch from the retracted state to the lifting state. In the lifting state, the rear traveling wheel 11 separates from the track under the jack's influence, and the first auxiliary wheel 22 contacts the track 3 under the jack's influence and moves along the track 3. With this configuration, the first auxiliary wheel 22 can replace the rear traveling wheel 11 in moving on the track 3, solving the problem of the rear traveling wheel 11 being locked by the brake mechanism and unable to continue rotating. Simultaneously, the jack suspends the rear traveling mechanism 1 on the first emergency auxiliary mechanism 2, allowing it to move synchronously with the overhead crane.

[0049] It should be understood that operators can manually and gradually raise the jacks to the raised position.

[0050] This application does not limit the type of the first telescopic member 21. The first telescopic member 21 includes, but is not limited to, structures such as jacks and hydraulic rods. Any component that can be manually or automatically extended or shortened can be set as the first telescopic member 21.

[0051] Continue to refer to Figures 2-5 The first emergency auxiliary mechanism 2 includes a support plate 23, which is fixed above the jack, meaning the jack is fixed below the support plate 23. The support plate 23 is connected to the rear walking mechanism 1, thereby achieving a fixed connection between the first emergency auxiliary mechanism 2 and the rear walking mechanism 1.

[0052] In a preferred embodiment, the rear walking mechanism 1 includes a mounting base 13, with the first drive mechanism 12 and all rear wheels 11 fixed below the mounting base 13. A support plate 23 is connected to the mounting base 13 and is located on the same horizontal plane (see reference). Figure 3 ).

[0053] Furthermore, the total height of the jack and the first auxiliary wheel 22 in the lifting state is greater than the outer diameter of the rear traveling wheel 11, to ensure that the rear traveling wheel 11 is suspended above the track 3 when the jack is in the lifting state. Similarly, the total height of the jack and the first auxiliary wheel 22 in the retracted state is less than the outer diameter of the rear traveling wheel 11, to ensure that the first auxiliary wheel 22 is suspended above the track 3 when the jack is in the retracted state, and will not interfere with the normal operation of the overhead crane.

[0054] As a preferred example, when the jack is in the lifting state, the vertical distance between the rear traveling wheel 11 and the track 3 is 1~5mm.

[0055] Setting the distance between the rear traveling wheel 11 and the track 3 to be greater than 1mm ensures that the rear traveling wheel 11, when suspended in the air, will not interfere with the normal movement of the overhead crane via the first auxiliary wheel 22 and the front traveling wheel 41. Setting the distance between the rear traveling wheel 11 and the track 3 to be less than 5mm ensures that, when the jack is in the lifting position, the first auxiliary wheel 22 and the front traveling wheel 41 are approximately on the same horizontal plane. At this time, the overhead crane can move on the track 3 via the first auxiliary wheel 22 and the front traveling wheel 41, facilitating the smooth movement of the overhead crane to the maintenance area.

[0056] In one example, the outer diameters of the front traveling wheel 41 and the rear traveling wheel 11 are 110~130mm. In this case, the outer diameter of the first auxiliary wheel 22 can be set to 50~80mm to avoid interference between the first auxiliary wheel 22 and the rear traveling wheel 11 when the first auxiliary wheel 22 is suspended, provided that the first auxiliary wheel 22 can bear the weight of the crane.

[0057] In a preferred embodiment, there are two first auxiliary wheels 22 and two tracks 3. Each first auxiliary wheel 22 corresponds to one track 3 and is connected to a corresponding first telescopic rod 21. There is one first telescopic member 21, which synchronously drives the two first auxiliary wheels 22 to move vertically. The two first auxiliary wheels 22 are fixed at the same height on the first telescopic member 21 to ensure that the two first auxiliary wheels 22 can be placed synchronously on the corresponding track 3.

[0058] With this structure, the first telescopic component 21 can synchronously drive the two first auxiliary wheels 22 to move in the vertical direction when it extends or retracts, and can make the two first auxiliary wheels 22 synchronously contact the track 3, thereby ensuring that the crane moves smoothly when it travels through the two first auxiliary wheels 22.

[0059] Continue to refer to Figures 3-5 The first emergency auxiliary mechanism 2 preferably also includes two connecting rods 24, and each first auxiliary wheel 22 is connected to the first telescopic member 21 through a corresponding connecting rod 24.

[0060] Reference Figure 4 and Figure 5 As shown, in a specific example, the first telescopic component 21 is a jack, and the support plate 23 is fixed above the jack. The jack is connected to two first auxiliary wheels 22 via connecting rods 24. Each first auxiliary wheel 22 is positioned above a corresponding track 3 and can move vertically with the jack. When the jack changes from a retracted state to a lifting state, it first lifts downwards, causing the two first auxiliary wheels 22 to simultaneously contact the track 3, thus forming a supporting force at the bottom of the jack. Then, it lifts upwards, and the jack can lift the rear traveling mechanism 1 via the support plate 23, so that the rear traveling wheel 11 is suspended on the track 3. At this time, the overhead crane can move via the first auxiliary wheels 22 and the front traveling wheel 41.

[0061] In another preferred embodiment, there are two first auxiliary wheels 22, two first telescopic members 21, and two tracks 3. Each first auxiliary wheel 22 corresponds to a specific track 3 and is connected to a specific first telescopic member 21. Both first telescopic members 21 are fixed to the support plate 23 and are used to synchronously drive the corresponding first auxiliary wheel 22 to move vertically. The two first auxiliary wheels 22 are fixed at the same height on their respective first telescopic members 21 to ensure that the two first auxiliary wheels 22 can be placed synchronously on their respective tracks 3. In this case, each first auxiliary wheel 22 can move vertically through its corresponding first telescopic member 21.

[0062] It should be explained that the two first telescopic members 21 need to move synchronously to ensure that the two first auxiliary wheels 22 contact the track 3 synchronously and move together on the track 3.

[0063] In summary, this application provides a crane traveling device with an emergency auxiliary mechanism. This mechanism can change the height of the first auxiliary wheel 22 through the first telescopic member 21 when the crane loses power or the traveling wheel fails. The operator can use the first auxiliary wheel 22 to push the crane to the maintenance area, so as to realize the rapid extrication of the crane and improve the efficiency of crane failure handling.

[0064] The above description is only a description of the preferred embodiments of this application and is not intended to limit the scope of this application in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of this application.

Claims

1. A crane traveling device with an emergency auxiliary mechanism, characterized in that, It includes a rear walking mechanism and a first emergency auxiliary mechanism, wherein the first emergency auxiliary mechanism is connected to the rear walking mechanism; The rear traveling mechanism includes a rear traveling wheel and a first drive mechanism. The first drive mechanism is used to drive the rear traveling wheel to travel on the track. The first drive mechanism includes a brake mechanism, which is used to lock the rear traveling wheel. The first emergency auxiliary mechanism includes a first telescopic member and a first auxiliary wheel connected to each other; when the rear running wheel is locked by the brake mechanism, the first telescopic member is used to separate the rear running mechanism from the track and to make the first auxiliary wheel contact the track, and the first auxiliary wheel is used to travel along the track.

2. The crane traveling device with an emergency auxiliary mechanism as described in claim 1, characterized in that, The first telescopic component is configured as a jack, which has a retracted state and a lifting state. When the jack is in the retracted state, the first auxiliary wheel is separated from the track, and the rear traveling wheel is used to travel along the track. When the rear running wheel is locked by the brake mechanism, the jack switches from the retracted state to the lifting state; When the jack is in the lifting state, the rear traveling wheel is separated from the track by the jack, and the first auxiliary wheel is in contact with the track by the jack for traveling along the track.

3. The crane traveling device with an emergency auxiliary mechanism as described in claim 2, characterized in that, The first emergency auxiliary mechanism includes a support plate, which is fixed above the jack and connected to the rear walking mechanism.

4. The overhead crane traveling device with an emergency auxiliary mechanism as described in claim 3, characterized in that, The rear walking mechanism includes a mounting base, the first drive mechanism and all the rear walking wheels are fixed below the mounting base, and the support plate is connected to the mounting base and located on the same horizontal plane.

5. The crane traveling device with an emergency auxiliary mechanism as described in claim 4, characterized in that, When the jack is in the lifting state, the total height of the jack and the first auxiliary wheel is greater than the outer diameter of the rear running wheel; when the jack is in the retracted state, the total height of the jack and the first auxiliary wheel is less than the outer diameter of the rear running wheel.

6. The overhead crane traveling device with an emergency auxiliary mechanism as described in claim 5, characterized in that, When the jack is in the lifting state, the vertical distance between the rear traveling wheel and the track is 1~5mm.

7. The crane traveling device with an emergency auxiliary mechanism as described in any one of claims 1 to 6, characterized in that, There are two first auxiliary wheels and two tracks, with each first auxiliary wheel corresponding to one track; there is one first telescopic member, which is used to synchronously drive the two first auxiliary wheels to move in the vertical direction, and the two first auxiliary wheels are fixed at the same height on the first telescopic member.

8. The crane traveling device with an emergency auxiliary mechanism as described in claim 7, characterized in that, The first emergency auxiliary mechanism also includes two connecting rods, and each of the first auxiliary wheels is connected to the first telescopic member through a corresponding connecting rod.

9. The crane traveling device with an emergency auxiliary mechanism as described in any one of claims 1 to 6, characterized in that, There are two of each of the first auxiliary wheel, the first telescopic member, and the track. Each first auxiliary wheel corresponds to a corresponding track and is connected to a corresponding first telescopic member. The two first telescopic members synchronously drive the corresponding first auxiliary wheel to move in the vertical direction. The two first auxiliary wheels are at the same fixed height on the corresponding first telescopic member.

10. The crane traveling device with an emergency auxiliary mechanism as described in any one of claims 1 to 6, characterized in that, It also includes a forward walking mechanism and a second emergency auxiliary mechanism, the second emergency auxiliary mechanism being connected to the forward walking mechanism; The forward traveling mechanism includes a front traveling wheel and a second drive mechanism, the second drive mechanism being used to drive the front traveling wheel to travel on the track; The second emergency auxiliary mechanism includes a second telescopic member and a second auxiliary wheel connected to each other; when the rear running wheel is locked by the brake mechanism, the second telescopic member is used to separate the front running mechanism from the track and to make the second auxiliary wheel contact the track, and the second auxiliary wheel is used to travel along the track; the structure of the second emergency auxiliary mechanism is the same as the structure of the first emergency auxiliary mechanism.

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