Transplanting trolley base

Abstract

The utility model relates to material handling equipment technical field especially is a kind of transplanting headstock base, including base body and at least two installation in the base body front and rear two ends's base drive assembly;The base drive assembly includes the base drive unit of installation in base body and with the first walking wheel and second walking wheel of detachable connection of base drive unit, the base drive unit is driven connection with first walking wheel and second walking wheel, the base drive unit is used to drive first walking wheel and second walking wheel synchronous same direction rotation;The utility model when needing to maintain walking wheel, first walking wheel or second walking wheel of wheel surface abrasion is removed, prevent the base drive unit and first walking wheel and second walking wheel integral removal, shorten maintenance window, improve equipment comprehensive efficiency.

Description

Technical Field

[0001] This utility model relates to the field of material handling equipment technology, and in particular to a base for a transplanting overhead crane. Background Technology

[0002] In the semiconductor industry, Automated Material Handling Systems (AMHS) are crucial for improving semiconductor manufacturing productivity, yield, and equipment utilization. A safe and efficient AMHS can significantly reduce work-in-process waiting time, thereby shortening the wafer production cycle. Tracks are an essential component of AMHS. Wafer fabs employ hundreds or even thousands of processing steps that rely on multiple overhead material handling cranes within the AMHS system. These cranes use tracks to safely and accurately transport materials between different pieces of equipment.

[0003] Material handling overhead cranes are supported on rails by traveling wheels and travel along the rails. The traveling wheels are in contact with the rails for a long time, and the wear of the wheel surfaces leads to poor rail contact, causing vibration, positioning misalignment or jamming. This results in the deterioration of the crane's repeatability and positioning accuracy, affecting the handling accuracy.

[0004] In existing equipment, in order to replace the traveling wheels, the entire drive unit associated with the traveling wheels must be removed. Consequently, drive components with low failure rates, such as encoders and controllers, must be replaced simultaneously, extending the maintenance window. This maintenance leads to a decrease in the MTBF (Mean Time Between Failures) of the drive unit, requiring recalibration of the crane's dynamic parameters, such as the PID control curve, after reinstallation, thus affecting the overall efficiency of the equipment. Utility Model Content

[0005] This utility model addresses the shortcomings of existing technologies by providing a base for a transplanting crane. When maintenance of the traveling wheels is required, the worn first or second traveling wheel can be removed, preventing the base drive unit from being completely removed from the first and second traveling wheels, thus shortening the maintenance window and improving the overall efficiency of the equipment.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This utility model provides a transplanting crane base, including a base body and at least two base drive components installed at the front and rear ends of the base body;

[0008] The base drive assembly includes a base drive unit installed on the base body and a first traveling wheel and a second traveling wheel detachably connected to the base drive unit. The base drive unit is driven to drive the first traveling wheel and the second traveling wheel to rotate synchronously in the same direction.

[0009] The base drive unit includes a base drive motor and a reducer installed on the base body, as well as a first coupling and a second coupling that are respectively driven and connected to the two output ends of the reducer. The base drive motor is driven and connected to the reducer. The first traveling wheel is detachably connected to the first coupling, and the second traveling wheel is detachably connected to the second coupling.

[0010] The first traveling wheel includes a rotating component and a protective sleeve. The rotating component is detachably connected to the first coupling, and the protective sleeve is fitted on the outside of the rotating component.

[0011] When the first coupling rotates, it drives the rotating component to rotate, so that the sheath rotates along the axis of the first coupling.

[0012] The rotating component includes a wheel body and a locking member. The wheel body is provided with a mounting hole, the first coupling is provided with a connecting shaft, the connecting shaft passes through the mounting hole, and the locking member is used to lock the wheel body and the connecting shaft.

[0013] The locking component is an expansion sleeve, the wheel body is provided with a mating hole, the mating hole is connected to the mounting hole, and one end of the expansion sleeve extends into the mating hole;

[0014] When the wheel body is locked to the connecting shaft, the expansion sleeve expands the inner wall of the connecting shaft and the mating hole, so that the first coupling and the rotating component can smoothly transmit torque and radial force.

[0015] The connecting shaft is equipped with a limiting wheel, which is located below the first traveling wheel and the second traveling wheel, and the limiting wheel is perpendicular to the axis of the first traveling wheel.

[0016] The connecting shaft is equipped with a connecting member, and the limiting wheel is mounted on the connecting member;

[0017] The connecting component includes a connecting seat, a first bearing, and a second bearing. The connecting seat has a connecting hole, and the connecting shaft passes through the connecting hole. The first bearing and the second bearing are respectively installed at both ends of the connecting hole, and the inner rings of the first bearing and the second bearing are connected to the connecting shaft.

[0018] The connecting seat is equipped with a first mounting plate, the outer ring of the first bearing is connected to the first mounting plate, and the first mounting plate is provided with a first movable hole for the connecting shaft to pass through.

[0019] The connecting seat is equipped with a second mounting plate, the outer ring of the second bearing is connected to the second mounting plate, and the second mounting plate is provided with a second movable hole for the connecting shaft to pass through.

[0020] The number of the limiting wheels is at least two, and the arrangement direction of the limiting wheels is parallel to the movement direction of the base body.

[0021] The beneficial effects of this utility model are:

[0022] In practical applications, the base drive unit uses a servo motor to place the first and second traveling wheels on the track. The base drive unit drives the first and second traveling wheels to rotate synchronously and in the same direction, so that the base can move smoothly along the track and accurately transport materials to the overhead crane. When the traveling wheels need maintenance, the first or second traveling wheel with worn wheel surface can be removed, preventing the base drive unit from being removed as a whole with the first and second traveling wheels. This avoids the need for maintenance and recalibration of the base drive unit, shortens the maintenance window, reduces the waiting time for wafer products (WIP) due to maintenance downtime and decreased handling efficiency, and improves the overall efficiency of the equipment. Attached Figure Description

[0023] Figure 1 This is a front view of the structure of the base of the transplanting crane.

[0024] Figure 2 This is a schematic diagram of the exploded structure of the base of the transplanting crane.

[0025] Figure 3 for Figure 2 Enlarged view of point A in the image.

[0026] Figure 4 This is a sectional view of the installation structure of the wheel body and the protective sleeve.

[0027] Figure 5 This is a schematic diagram of the exploded structure of the connecting components.

[0028] 1. Base body; 2. Base drive unit; 21. Base drive motor; 22. Reducer; 23. First coupling; 231. Connecting shaft; 24. Second coupling;

[0029] 3. First traveling wheel;

[0030] 31. Rotating component; 311. Wheel body; 3111. Mounting hole; 3112. Connecting hole; 312. Locking component;

[0031] 32. Sheath;

[0032] 4. Second traveling wheel;

[0033] 5. Limiting wheels;

[0034] 6. Connecting components;

[0035] 61. Connecting seat; 611. Connecting hole; 62. First bearing; 63. Second bearing;

[0036] 601, First mounting plate; 6011, First movable hole;

[0037] 602, Second mounting plate; 6021, Second movable hole. Detailed Implementation

[0038] To facilitate understanding by those skilled in the art, the present invention will be further described below in conjunction with embodiments and accompanying drawings. Specific embodiments of the present invention will be described below. It should be noted that, in order to provide a concise description of these embodiments, this specification cannot provide a detailed description of all features of the actual embodiments.

[0039] refer to Figures 1 to 5 As shown, this utility model provides a transplanting crane base, including a base body 1 and two base drive assemblies installed at the front and rear ends of the base body 1, which facilitates stable movement of the base body 1; the base drive assembly includes a base drive unit 2 installed on the base body 1 and a first traveling wheel 3 and a second traveling wheel 4 detachably connected to the base drive unit 2. The base drive unit 2 is drivenly connected to the first traveling wheel 3 and the second traveling wheel 4, and the base drive unit 2 is used to drive the first traveling wheel 3 and the second traveling wheel 4 to rotate synchronously in the same direction.

[0040] refer to Figure 1 , 2 As shown, in practical applications, the base drive unit 2 uses a servo motor to place the first traveling wheel 3 and the second traveling wheel 4 on the track. The base drive unit 2 drives the first traveling wheel 3 and the second traveling wheel 4 to rotate synchronously and in the same direction, so that the base can move smoothly along the track and accurately transport materials to the overhead crane. When the traveling wheel needs maintenance, the first traveling wheel 3 or the second traveling wheel 4 with worn wheel surfaces can be removed. This prevents the base drive unit 2 from being completely removed from the first traveling wheel 3 and the second traveling wheel 4, avoiding the need for maintenance and recalibration of the base drive unit 2, shortening the maintenance window, reducing the waiting time for wafer products (WIP) directly caused by maintenance downtime and decreased handling efficiency, and improving the overall efficiency of the equipment.

[0041] refer to Figure 1 , 2As shown, in this embodiment, the base drive unit 2 includes a base drive motor 21 and a reducer 22 installed on the base body 1, and a first coupling 23 and a second coupling 24 that are respectively driven and connected to the two output ends of the reducer 22. The base drive motor 21 is driven and connected to the reducer 22. The first traveling wheel 3 is detachably connected to the first coupling 23, and the second traveling wheel 4 is detachably connected to the second coupling 24. The output torque is smoothly controlled by the reducer 22. When the first traveling wheel 3 or the second traveling wheel 4 is worn, it can be separated from the corresponding coupling, which facilitates quick installation or removal of the traveling wheel and supports quick replacement of worn parts.

[0042] refer to Figure 2 , 3 As shown, in this embodiment, the first traveling wheel 3 includes a rotating component 31 and a protective sleeve 32. The rotating component 31 is detachably connected to the first coupling 23, and the protective sleeve 32 is sleeved on the outside of the rotating component 31. In actual application, when the first coupling 23 rotates, it drives the rotating component 31 to rotate, so that the protective sleeve 32 rotates along the axis of the first coupling 23. The protective sleeve 32 contacts the track, which facilitates the smooth movement of the first traveling wheel 3 along the track. The first traveling wheel 3 and the second traveling wheel 4 have the same structure. When the protective sleeve 32 on the first traveling wheel 3 or the second traveling wheel 4 is worn, the first traveling wheel 3 or the second traveling wheel 4 can be separated from the corresponding coupling, which facilitates quick installation or removal of the traveling wheel and supports quick replacement of worn parts.

[0043] refer to Figure 3 As shown, in this embodiment, the rotating component 31 includes a wheel body 311 and a locking member 312. The wheel body 311 is provided with a mounting hole 3111, and the first coupling 23 is provided with a connecting shaft 231. The connecting shaft 231 passes through the mounting hole 3111, and the locking member 312 is used to lock the wheel body 311 and the connecting shaft 231. The first traveling wheel 3 and the second traveling wheel 4 have the same structure, which facilitates the smooth transmission of torque between the first coupling 23 and the first traveling wheel 3 or the second coupling 24 and the second traveling wheel 4, and the structure is stable.

[0044] refer to Figure 3 , 4As shown, in this embodiment, the locking member 312 is an expansion sleeve, the wheel body 311 is provided with a mating hole 3112, the mating hole 3112 is connected to the mounting hole 3111, and one end of the expansion sleeve extends into the mating hole 3112. In actual application, when the wheel body 311 is locked with the connecting shaft 231, the expansion sleeve expands the inner wall of the connecting shaft 231 and the mating hole 3112. The structure and working principle of the expansion sleeve are existing technologies, based on the radial expansion effect generated by the axial force and the conical surface, so that the first coupling 23 and the rotating component 31 can smoothly transmit torque and radial force. The first traveling wheel 3 and the second traveling wheel 4 have the same structure, which facilitates the smooth transmission of torque between the first coupling 23 and the first traveling wheel 3 or the second coupling 24 and the second traveling wheel 4, and the structure is stable.

[0045] refer to Figure 3 , 5 As shown, in this embodiment, the connecting shaft 231 is equipped with a limiting wheel 5, which is located below the first traveling wheel 3 and the second traveling wheel 4. The limiting wheel 5 is perpendicular to the axis of the first traveling wheel 3. In actual application, the limiting wheels 5 located on the first traveling wheel 3 and the second traveling wheel 4 respectively abut against the inner side of the corresponding track to achieve lateral limiting of the base body 1 and prevent the base body 1 from deviating.

[0046] refer to Figure 2 , 3 As shown in Figure 5, in this embodiment, the connecting shaft 231 is equipped with a connecting member 6, and the limiting wheel 5 is installed on the connecting member 6. The connecting member 6 includes a connecting seat 61, a first bearing 62, and a second bearing 63. The connecting seat 61 is provided with a connecting hole 611, and the connecting shaft 231 passes through the connecting hole 611. The first bearing 62 and the second bearing 63 are respectively installed at both ends of the connecting hole 611. The inner rings of the first bearing 62 and the second bearing 63 are connected to the connecting shaft 231. The first bearing 62 and the second bearing 63 stably position both ends of the connecting seat 61, which facilitates the stable rotation of the connecting shaft 231 relative to the limiting wheel 5.

[0047] refer to Figure 5As shown, in this embodiment, the connecting seat 61 is equipped with a first mounting plate 601, and the outer ring of the first bearing 62 is connected to the first mounting plate 601. The first mounting plate 601 is provided with a first movable hole 6011 for the connecting shaft 231 to pass through, ensuring the normal rotation of the connecting shaft 231. The first mounting plate 601 is bolted to the connecting seat 61, facilitating the installation or removal of the first mounting plate 601, thereby enabling quick replacement of the first bearing 62. The connecting seat 61 is equipped with a second mounting plate 602, and the outer ring of the second bearing 63 is connected to the second mounting plate 602. The second mounting plate 602 is provided with a second movable hole 6021 for the connecting shaft 231 to pass through, ensuring the normal rotation of the connecting shaft 231. The second mounting plate 602 is bolted to the connecting seat 61, facilitating the installation or removal of the second mounting plate 602, thereby enabling quick replacement of the second bearing 63.

[0048] refer to Figure 2 , 5 As shown, in this embodiment, the number of limiting wheels 5 is at least two. The arrangement direction of the limiting wheels 5 is parallel to the movement direction of the base body 1. At least two limiting wheels 5 are installed on the first traveling wheel 3 or the second traveling wheel 4, so that the base body 1 is arranged parallel to the movement direction, accurately positioning the base body 1 and facilitating the smooth sliding of the base body 1 along the movement direction.

[0049] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A base for a transplanting crane, characterized in that, Includes a base body (1) and at least two base drive assemblies installed at the front and rear ends of the base body (1); The base drive assembly includes a base drive unit (2) installed on the base body (1) and a first traveling wheel (3) and a second traveling wheel (4) detachably connected to the base drive unit (2). The base drive unit (2) is driven to drive the first traveling wheel (3) and the second traveling wheel (4). The base drive unit (2) is used to drive the first traveling wheel (3) and the second traveling wheel (4) to rotate synchronously in the same direction.

2. The transplanting crane base according to claim 1, characterized in that, The base drive unit (2) includes a base drive motor (21) and a reducer (22) installed on the base body (1), as well as a first coupling (23) and a second coupling (24) that are respectively driven and connected to the two output ends of the reducer (22). The base drive motor (21) is driven and connected to the reducer (22). The first traveling wheel (3) is detachably connected to the first coupling (23), and the second traveling wheel (4) is detachably connected to the second coupling (24).

3. The transplanting crane base according to claim 2, characterized in that, The first traveling wheel (3) includes a rotating component (31) and a protective sleeve (32). The rotating component (31) is detachably connected to the first coupling (23), and the protective sleeve (32) is fitted on the outside of the rotating component (31). When the first coupling (23) rotates, it drives the rotating component (31) to rotate, so that the sheath (32) rotates along the axis of the first coupling (23).

4. The transplanting crane base according to claim 3, characterized in that, The rotating component (31) includes a wheel body (311) and a locking member (312). The wheel body (311) is provided with a mounting hole (3111). The first coupling (23) is provided with a connecting shaft (231). The connecting shaft (231) passes through the mounting hole (3111). The locking member (312) is used to lock the wheel body (311) and the connecting shaft (231).

5. The transplanting crane base according to claim 4, characterized in that, The locking element (312) is an expansion sleeve, and the wheel body (311) is provided with a docking hole (3112). The docking hole (3112) is connected to the mounting hole (3111), and one end of the expansion sleeve extends into the docking hole (3112). When the wheel body (311) is locked with the connecting shaft (231), the expansion sleeve expands the inner wall of the connecting shaft (231) and the mating hole (3112) so that the first coupling (23) and the rotating component (31) can smoothly transmit torque and radial force.

6. The transplanting crane base according to claim 4, characterized in that, The connecting shaft (231) is equipped with a limiting wheel (5), which is located below the first traveling wheel (3) and the second traveling wheel (4). The limiting wheel (5) is perpendicular to the axis of the first traveling wheel (3).

7. The transplanting crane base according to claim 6, characterized in that, The connecting shaft (231) is equipped with a connecting member (6), and the limiting wheel (5) is installed on the connecting member (6); The connecting component (6) includes a connecting seat (61), a first bearing (62) and a second bearing (63). The connecting seat (61) is provided with a connecting hole (611). The connecting shaft (231) passes through the connecting hole (611). The first bearing (62) and the second bearing (63) are respectively installed at both ends of the connecting hole (611). The inner rings of the first bearing (62) and the second bearing (63) are connected to the connecting shaft (231).

8. The transplanting crane base according to claim 7, characterized in that, The connecting seat (61) is equipped with a first mounting plate (601), the outer ring of the first bearing (62) is connected to the first mounting plate (601), and the first mounting plate (601) is provided with a first movable hole (6011) for the connecting shaft (231) to pass through; The connecting seat (61) is equipped with a second mounting plate (602), the outer ring of the second bearing (63) is connected to the second mounting plate (602), and the second mounting plate (602) is provided with a second movable hole (6021) for the connecting shaft (231) to pass through.

9. The transplanting crane base according to claim 6, characterized in that, The number of the limiting wheels (5) is at least two, and the arrangement direction of the limiting wheels (5) is parallel to the movement direction of the base body (1).

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