Horizontal adjusting device for crown block clamping jaw
By setting up multiple horizontal adjustment devices and light-blocking sensing components on the Tianche clamp jaw, the problems of high cost and poor accuracy of the Tianche clamp jaw are solved, and the low-cost and high-precision horizontal adjustment effect is achieved.
Patent Information
- Application Number
- CN202421862967.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-08-02
AI Technical Summary
The existing Tianche jaw level adjustment device has high cost and poor adjustment accuracy, especially the accuracy requirements of semiconductor vehicles, the sensor design is complex and the independent adjustment mechanism is inconvenient.
At least three horizontal adjustment devices are provided on the same plane of the trolley jaws. The suspension belt is used to combine it with the trolley body. The horizontal adjustment is performed through the double-axis swinging action of the pivot seat and the swinging member, and the light-blocking device sensing component, simplifying the structure and reducing costs.
It realizes accurate horizontal adjustment at low cost. Through fine adjustment of the suspension belt and dual-axis swing design, the horizontal detection accuracy and adjustment convenience of the Tianche clamp jaw are improved.
Smart Images
Figure CN223213670U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of semiconductors, in particular to a horizontal adjustment device for a crane clamping jaw. Background Art
[0002] Since semiconductor components such as wafers, chips, photomasks or glass substrates are almost all flaky and fragile items, they must be stable during transportation to prevent them from being shaken or hit so much that they break or get damaged. Therefore, special transportation devices such as transport vehicles and overhead cranes are usually required. As for overhead cranes, it is an overhead transport system (OHT) commonly found in factories. This aerial unmanned transport vehicle, commonly known as an overhead crane, can effectively utilize the three-dimensional space of the factory for transportation. The semiconductor carriers being transported are usually at a considerable height difference from the overhead crane, and a lifting device is required to lower the overhead crane gripper from the overhead crane's elevated position for transportation. However, this action can easily cause the overhead crane gripper and the semiconductor carrier to shift or tilt, requiring the user to perform alignment and horizontal adjustments before gripping.
[0003] However, the above-mentioned overhead crane clamp has the following problems and deficiencies when adjusting the horizontal position, which need to be improved:
[0004] First, the common leveling method uses a gyroscope to detect whether the crane's gripper is in the correct position. However, gyroscopes are relatively expensive, especially for semiconductor carriers, which require higher precision.
[0005] Secondly, various sensors are also used for level adjustment, such as distance sensors or laser displacement sensors. Although the prices of these two sensors are relatively low, in order to achieve the purpose of level adjustment, multiple sets of sensors must be used simultaneously, so the total amount is still relatively high. In addition, this design can only sense whether the balance is stable and cannot be adjusted. Or the adjustment mechanism is completely independent of it, which makes adjustment quite inconvenient. Of course, its adjustment accuracy is difficult to stabilize.
[0006] Therefore, there is an urgent need for a horizontal adjustment device for the clamping jaws of a crown block to solve the above technical problems. Utility Model Content
[0007] The utility model aims to provide a horizontal adjustment device for a crane clamping jaw, which has a simple structure, low cost and convenient fine-tuning action.
[0008] To achieve this purpose, the present invention adopts the following technical solutions:
[0009] A horizontal adjustment device for a crane jaw, wherein at least three horizontal adjustment devices are provided on the same plane of the crane jaw, the crane jaw being connected to a crane body via a plurality of suspension belts, the horizontal adjustment device comprising:
[0010] a fixing seat, disposed on the plane;
[0011] a pivot seat, pivotally mounted on the fixed seat via at least one transverse axis;
[0012] a swinging member, pivotally mounted on the pivot seat via at least one longitudinal axis, such that its swinging direction is perpendicular to the swinging direction of the pivot seat;
[0013] a belt fixing member movably disposed on the swinging member for clamping the suspension belt;
[0014] a limiting portion, provided on the swinging member and abutting against the belt fixing member, for fine-tuning the length of the suspension belt;
[0015] a detection piece provided on one side of the pivot seat so as to move along with the swing of the pivot seat; and
[0016] A sensing component is provided on the plane for sensing the detection piece, and the level adjustment is completed when the detection piece of the level adjustment device causes the sensing components at corresponding positions to produce the same sensing result.
[0017] Optionally, the swinging member has a receiving portion, one side of the belt fixing member has a movable block extending into the receiving portion, and the limiting portion passes through the receiving portion to abut against the movable block.
[0018] Optionally, the sensing component has a light-projecting portion, a light-receiving portion provided on one side of the light-projecting portion, and a sensing space formed between the light-projecting portion and the light-receiving portion.
[0019] Optionally, the sensing component is a photointerrupter.
[0020] Optionally, the belt fixing member has a fixing portion provided on the swinging member, a pressing portion detachably provided on the fixing portion, and a clamping space formed between the fixing portion and the pressing portion.
[0021] Optionally, the sensing component has a transmission component connected to a control module, and when the sensing component senses the detection piece, a sensing signal is transmitted to the control module.
[0022] Optionally, the control module is electrically connected to a warning component, and the control module issues a warning signal when receiving all the sensing signals.
[0023] Optionally, the detection piece has a detection port.
[0024] Optionally, the overhead crane gripper is a robotic arm for gripping wafer boxes and / or material box semiconductor carriers.
[0025] Beneficial effects:
[0026] The horizontal adjustment device of the overhead crane clamp provided by the present invention allows the user to perform horizontal adjustment of the overhead crane clamp by providing at least three horizontal adjustment devices on the same plane of the overhead crane clamp and combining the two ends of a plurality of suspension belts with the belt body fixing parts and the overhead crane body, so that the overhead crane clamp can be raised and lowered and adjusted in level. In conjunction with the two-axis swinging action of the pivot seat and the swinging part, the detection piece can directly reflect the force direction of the suspension belt, so that when all the detection pieces make the sensing components at the corresponding positions produce the same sensing results, it means that the horizontal adjustment is completed. The horizontal adjustment device of the overhead crane clamp has a low-cost horizontal detection means, can use the limiting part to fine-tune the suspension belt, and has the function of precise balance. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is an exploded view of the first preferred embodiment of the present invention.
[0028] Figure 2 It is a three-dimensional perspective view of the level adjustment device of the first preferred embodiment of the utility model.
[0029] Figure 3 This is an exploded view of the level adjustment device of the first preferred embodiment of the present utility model.
[0030] Figure 4 This is a schematic diagram of the belt combination of the first preferred embodiment of the present utility model.
[0031] Figure 5 This is a schematic diagram of the first preferred embodiment of the utility model. Figure 1 .
[0032] Figure 6 This is a schematic diagram of the first preferred embodiment of the utility model. Figure 2 .
[0033] Figure 7 This is a schematic diagram of the adjustment of the first preferred embodiment of the utility model.
[0034] Figure 8 It is a schematic diagram of fine adjustment of the first preferred embodiment of the utility model.
[0035] Figure 9 It is a structural schematic diagram of the belt fixing member of the second preferred embodiment of the present utility model.
[0036] Figure 10 It is a schematic structural diagram of the swing member of the third preferred embodiment of the present utility model.
[0037] Figure 11 This is an exploded view of the swing member of the third preferred embodiment of the utility model.
[0038] Figure 12 It is a schematic diagram of the implementation of the fourth preferred embodiment of the present utility model.
[0039] In the picture:
[0040] 100. Level adjustment device;
[0041] 1. Fixed seat; 2. Pivot seat; 21. Horizontal axis; 3. Swinging member; 31. Longitudinal axis; 32. Limiting part; 33. Accommodating part; 34. Long hole; 341. Bolt; 35. Accommodating groove; 4. Belt body fixing member; 41. Fixing part; 42. Pressing part; 421. Screw; 43. Clamping space; 44. Movable block; 5. Detection piece; 51. Detection port; 6. Sensing component; 61. Light-emitting part; 62. Light-receiving part; 63. Sensing space; 64. Transmission component; 7. Control module; 71. Warning component; 81. Overhead crane body; 82. Overhead crane clamp; 83. Suspension belt. DETAILED DESCRIPTION
[0042] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.
[0043] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.
[0044] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.
[0045] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.
[0046] See also Figures 1 to 3 , which is an exploded view of the first preferred embodiment and an exploded view of the horizontal adjustment device. It can be clearly seen from the figure that in this embodiment, at least three horizontal adjustment devices 100 are provided on the same plane of the crown block clamping jaw 82. The crown block clamping jaw 82 is connected to the crown block body 81 through a plurality of suspension belts 83. The horizontal adjustment device 100 mainly includes:
[0047] A fixing seat 1 is provided on the plane;
[0048] A pivoting seat 2 is pivotally mounted on the fixing seat 1 via at least one transverse shaft 21;
[0049] a swing member 3 pivotally mounted on the pivot base 2 via at least one longitudinal axis 31, such that its swing direction is perpendicular to the swing direction of the pivot base 2;
[0050] a belt fixing member 4 movably disposed on the swing member 3 for clamping the suspension belt 83;
[0051] a limiting portion 32 disposed on the swing member 3 and abutting against the belt fixing member 4 for fine-tuning the length of the suspension belt 83;
[0052] a detection piece 5 provided on one side of the pivot seat 2 so as to move along with the swing of the pivot seat 2; and
[0053] A sensing component 6 is disposed on the plane for sensing the detection piece 5 , and when the detection pieces 5 of the level adjustment devices 100 cause the sensing components 6 at corresponding positions to produce the same sensing results, the level adjustment is completed.
[0054] The crane body 81 is a handling device running on an overhead track; the crane claw 82 is a mechanical arm for clamping semiconductor carriers such as wafer boxes and magazines. This embodiment takes the magazine clamping as an example; the two ends of the suspension belt 83 are respectively arranged on the crane body 81 and the crane claw 82, and the crane claw 82 is raised and lowered by adjusting the length of the suspension belt 83; the fixed seat 1 is a U-shaped seat body, which is fixedly arranged on the top plane of the crane claw 82; the pivot seat 2 is a hollow square frame, the outer side of which is limited by the fixed seat 1 and the center is for the swing member 3 to be inserted; the two ends of the horizontal shaft body 21 are respectively arranged on the left and right side walls of the fixed seat 1 and the pivot seat 2. The number of horizontal shaft bodies 21 in this embodiment is two, and they are coaxially arranged without passing through the pivot seat 2, so that they can be arranged on the same plane as the longitudinal shaft body 31, without increasing the thickness of the pivot seat 2; the longitudinal shaft body 31 passes through the swing member 3 The belt fixing member 4 has a fixing portion 41 provided on the swinging member 3, a pressing portion 42 detachably provided on the fixing portion 41, and a clamping space 43 formed between the fixing portion 41 and the pressing portion 42 for passing the suspension belt 83; the swinging member 3 has a perforated receiving portion 33, and one side of the belt fixing member 4 has a hole extending from the fixing portion 41 and provided on the receiving portion. The movable block 44 is received within the receiving portion 33, and the limiting portion 32 is in the form of a bolt and is inserted into the receiving portion 33 to abut against the movable block 44. The detecting plate 5 is a sheet-like structure and is disposed at the front end of the pivot seat 2. In this embodiment, an L-shaped plate is used as an example. The sensing component 6 is a photointerrupter and has a light-emitting portion 61, a light-receiving portion 62 disposed on one side of the light-emitting portion 61, and a sensing space 63 formed between the light-emitting portion 61 and the light-receiving portion 62. The corresponding types of the above components are merely examples of preferred embodiments. Any types having the same functions are within the scope of this embodiment and are not limited to the above examples.
[0055] Through the above description, the structure of this technology can be understood. According to the corresponding coordination of this structure, it can achieve advantages such as simple structure, low installation cost, convenient fine-tuning, and applicable to the overhead crane body 81 in the semiconductor field. A detailed explanation will be given below.
[0056] Please also refer to Figures 1 to 8As shown, it is a schematic diagram of the decomposition diagram and fine adjustment of the first preferred embodiment. When the above components are assembled, it can be clearly seen from the figure that in this embodiment, at least three horizontal adjustment devices 100 are provided on the top plane of the crown block clamp 82. These three horizontal adjustment devices 100 are able to form a virtual plane representing the top plane of the crown block clamp 82. When the top plane of the crown block clamp 82 coincides with the virtual plane, it means that the crown block clamp 82 is in a horizontal state. Therefore, when the plurality of suspension belts 83 on the crane body 81 are combined with the horizontal adjustment device 100, the horizontal state of the crane clamping claw 82 can be controlled by adjusting the length of the suspension belt 83. The horizontal adjustment device 100 utilizes the belt body fixing member 4 to combine the suspension belt 83. Specifically, the belt body fixing member 4 is composed of a fixing portion 41, a pressing portion 42, and a clamping space 43. When the suspension belt 83 is combined, the screw 421 is first loosened to separate the pressing portion 42 from the fixing portion 41, so that the clamping space 43 on one side of the fixing portion 41 is opened. Then, the suspension belt 83 is placed in the clamping space 43, and the pressing portion 42 is locked to one side of the fixing portion 41. This can prevent the suspension belt 83 from detaching. In addition, this fixing method allows the suspension belt 83 to be inserted into the clamping space 43 from the end, making the combining and fixing action simpler and more convenient.
[0057] Afterwards, the suspension belt 83 cooperates with the biaxial swinging action of the pivot seat 2 and the swinging member 3, so that the detection piece 5 can directly reflect the force direction of the suspension belt 83. Specifically, in order to facilitate the subsequent description, the relative positions of front, back, left and right are first defined, wherein the detection piece 5 is located in front of the horizontal adjustment device 100. However, since the horizontal adjustment devices 100 on the front and back sides are arranged oppositely, the movement relationship in the up and down directions will be opposite when tilting. Therefore, the following directions are used to Figure 5 (Right side view) The left side of the horizontal adjustment device 100 is used for illustration. If the force direction of the suspension belt 83 is backward relative to the horizontal adjustment device 100, the rear end of the pivot seat 2 will be driven downward and the front end will be driven upward with the transverse shaft 21 as the axis, and the detection piece 5 provided at the front end of the pivot seat 2 will be lifted upward and out of the sensing range of the sensing component 6. Figure 6 As shown in the front view, if the force direction of the suspension belt 83 is to the left or right relative to the horizontal adjustment device 100, the longitudinal axis 31 will be used as the axis to drive the swing member 3 to swing left and right, but the swinging action of the swing member 3 will not affect the pivot seat 2 or the detection piece 5, so that the overall result is equivalent to the left and right force directions of the suspension belt 83 being absorbed by the swing member 3, and will not be reflected on the detection piece 5. Therefore, the lateral tilt change can be reduced, allowing the user to only observe the longitudinal tilt change, and it is easier to observe and adjust the horizontal state.
[0058] When the detection piece 5 causes the sensing component 6 at the corresponding position to produce the same sensing result, it means that the horizontal adjustment is completed. The so-called same sensing result means that the detection piece 5 is sensed at the same time or the detection piece 5 is not sensed at the same time. For example, since the detection piece 5 has a detection port 51, when the detection piece 5 is not sensed by the sensing component 6, it means that the length of the suspension belt 83 corresponding to the horizontal adjustment device 100 with the detection piece 5 is appropriate. Otherwise, the user can adjust the corresponding suspension belt 83 according to the sensing signal of the sensing component 6 (such as the light turns on when sensing). Specifically, Figure 7 As shown, the sensing component 6 utilizes a light-emitting portion 61 to continuously emit visible light, such as infrared light, to a light-receiving portion 62. When the detection piece 5 moves to the sensing space 63 between the light-emitting portion 61 and the light-receiving portion 62, the visible light is blocked, and a sensing signal is generated indicating that the detection piece 5 has been sensed. However, when the detection port 51 on the detection piece 5 moves into the path of the visible light, a sensing signal is generated indicating that the detection piece 5 has not been sensed. When all the detection pieces 5 are not sensed by the sensing component 6 at the same time, it means that the leveling adjustment is completed. The design of the detection port 51 reduces the angular change required to determine whether the detection piece 5 blocks the visible light, thereby improving the detection sensitivity to better meet the accuracy required by semiconductors. The sensor used in this sensing method is a photointerrupter, which has a simple function and a low purchase cost. However, in order to facilitate the display of tilt changes in the figure, a more exaggerated tilt angle is used.
[0059] In addition, if Figure 8 As shown, since the user needs to take into account the three horizontal adjustment devices 100 at the same time, this embodiment is additionally designed with a limiting portion 32 to limit the range of movement of the belt fixing member 4. Specifically, the belt fixing member 4 uses a bolt 341 to penetrate the elongated hole 34 of the swinging member 3, so that the belt fixing member 4 can move up and down on one side of the swinging member 3. The up and down movement of the belt fixing member 4 corresponds to the length of the suspension belt 83. When the suspension belt 83 is lengthened, the height of the movable block 44 of the belt fixing member 4 in the accommodating portion 33 is lowered, and when the suspension belt 83 is shortened, the height of the movable block 44 in the accommodating portion 33 is increased. After the limiting portion 32 penetrates the accommodating portion 33, it supports the movable block 44 from above to limit the range of increase of the movable block 44. In other words, it can limit the limit of shortening the suspension belt 83, thereby preventing the user from over-adjusting and reducing the difficulty of adjustment. In addition, since the adjustment range of the limiting portion 32 is very small, it can provide the effect of fine-tuning the suspension belt 83, further increasing the accuracy of horizontal adjustment. In addition, since the movable block 44 is movably embedded in the accommodating portion 33, the space volume after the belt fixing member 4 and the swinging member 3 are combined is smaller, which can easily avoid the electronic components on the top surface of the overhead traveling machine clamp 82, and is more conducive to the installation of the horizontal adjustment device 100 on the top plane of the overhead traveling machine clamp 82.
[0060] Please also refer to Figure 9As shown in the figure, it is a schematic diagram of the structure of the belt fixing member of the second preferred embodiment. It can be clearly seen from the figure that this embodiment is similar to the first preferred embodiment, except that the detachable pressing portion 42 of the belt fixing member 4 is cancelled. At this time, the suspension belt 83 is required to pass through the clamping space 43 before being combined with the overhead traveling vehicle body 81. This shows that the combination method of the suspension belt 83 and the overhead traveling vehicle clamp 82 and the overhead traveling vehicle body 81 is not limited.
[0061] Please also refer to Figure 10 and Figure 11 As shown in the figure, it is a schematic diagram of the structure of the swinging member and an exploded diagram of the swinging member of the third preferred embodiment. It can be clearly seen from the figure that this embodiment is similar to the first preferred embodiment, and only the combination and fixing method of the belt fixing member 4 and the swinging member 3 is changed, so that the swinging member 3 has a receiving portion 33, and the belt fixing member 4 has a movable block 44 extending into the receiving portion 33 on one side, and the limiting portion 32 is passed through the receiving portion 33 to abut the movable block 44, but the pressing portion 42 and the clamping space 43 of the belt fixing member 4 are cancelled. Specifically, the swing member 3 has an upwardly opening receiving groove 35 that communicates with the receiving portion 33. The fixed portion 41 is first inserted into the receiving groove 35, the movable block 44 is placed into the receiving portion 33, and the suspension belt 83, the fixed portion 41, and the movable block 44 are then fixed together. This allows the fixed portion 41 to move up and down within the receiving groove 35. The limiting portion 32 limits the range of motion of the movable block 44 and the fixed portion 41, thereby also allowing fine-tuning of the length of the suspension belt 83. Furthermore, this design further reduces the number of screws required for the belt fixing member 4, thereby simplifying the design of the belt fixing member 4.
[0062] Please also refer to Figure 12FIG. 1 is a schematic diagram of a fourth preferred embodiment. As can be clearly seen in the figure, only a transmission component 64 connected to a control module 7 is provided within the sensing component 6. When the sensing component 6 senses the detection strip 5, a sensing signal is transmitted to the control module 7. The control module 7 is electrically connected to an alarm component 71. When the control module 7 receives all the sensing signals, it issues an alarm signal. The control module 7 is a factory server, a desktop computer, a laptop computer, or a smart phone. This embodiment uses a desktop computer as an example. The transmission component 64 is a signal transmitter. This embodiment uses wireless transmission via a network as an example. The alarm component 71 can be a warning light, a speaker, or an alarm software within the control module 7. The alarm signal corresponds to a light signal, an audio signal, or a notification message. In this way, the present embodiment can utilize the transmission component 64 to automatically transmit the sensing signal of the sensing component 6 back to the control module 7, and utilize the control module 7 to automatically integrate it so that when all the sensing signals are received, it is determined that the horizontal adjustment is completed. Before the adjustment is completed, no matter which sensing component 6's sensing signal is received, it will be reflected on the control module 7, thereby simplifying the adjustment difficulty for the user.
[0063] The key technical aspects of the horizontal adjustment device for the overhead travelling crane clamping jaws of this embodiment are:
[0064] First, the dual-axis swing design of the pivot seat 2 and the swing member 3 is utilized to sensitively respond to the tilting state of the overhead traveling block clamp 82 , while simplifying the structure of the horizontal adjustment function of the overhead traveling block clamp 82 .
[0065] Second, the longitudinal axis 31 is used to absorb the lateral tension of the suspension belt 83, and the transverse axis 21 is used to reflect the longitudinal tension of the suspension belt 83 to the detection piece 5, so as to reduce the lateral tilt change. The user only needs to observe the longitudinal tilt change, which makes it easier to observe and adjust the horizontal state.
[0066] Third, a plurality of low-cost sensing components 6 are simply used to determine the level by synchronized light interruption, replacing the well-known high-cost sensing methods such as gyroscopes.
[0067] Fourth, the limiting portion 32 is used to slightly control the length change of the suspension belt 83 so that the user can fine-tune each leveling adjustment device 100, thereby improving the leveling adjustment accuracy.
[0068] Fifth, the belt fixing member 4 utilizes the design of the detachable pressing portion 42 so that the fixing action of the suspension belt 83 can be inserted into the clamping space 43 from the end, making the fixing action simpler and more convenient.
[0069] Sixth, the design of the accommodating portion 33 and the movable block 44 reduces the space occupied by the belt fixing member 4 and the swinging member 3 , which is more conducive to the installation of the horizontal adjustment device 100 on the top plane of the overhead traveling machine clamp 82 .
[0070] Seventh, the design of the control module 7 and the transmission component 64 is utilized to automatically integrate the sensing signals of all the sensing components 6 to respond to the sensing signals of the sensing components 6 in real time, making the user's level adjustment action more intuitive.
[0071] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.
Claims
1. A horizontal adjustment device for a crown block jaw, characterized in that: At least three level adjustment devices are provided on the same plane of the crown block jaws. The crown block jaws are connected to the crown block body via a plurality of suspension belts. The level adjustment devices include: a fixing seat, disposed on the plane; a pivot seat, pivotally mounted on the fixed seat via at least one transverse axis; a swinging member, pivotally mounted on the pivot seat via at least one longitudinal axis, such that its swinging direction is perpendicular to the swinging direction of the pivot seat; a belt fixing member movably disposed on the swinging member for clamping the suspension belt; a limiting portion, provided on the swinging member and abutting against the belt fixing member, for fine-tuning the length of the suspension belt; a detection piece provided on one side of the pivot seat so as to move along with the swing of the pivot seat; and A sensing component is provided on the plane for sensing the detection piece, and the level adjustment is completed when the detection piece of the level adjustment device causes the sensing components at corresponding positions to produce the same sensing result.
2. The horizontal adjustment device of the overhead crane clamping jaw according to claim 1, characterized in that: The swinging member is provided with a receiving portion, one side of the belt fixing member is provided with a movable block extending into the receiving portion, and the limiting portion is passed through the receiving portion to abut against the movable block.
3. The horizontal adjustment device of the overhead crane clamping jaw according to claim 1, characterized in that: The sensing component comprises a light-projecting portion, a light-receiving portion arranged at one side of the light-projecting portion, and a sensing space formed between the light-projecting portion and the light-receiving portion.
4. The horizontal adjustment device for the overhead crane clamping jaws according to claim 3, characterized in that: The sensing component is a photointerrupter.
5. The horizontal adjustment device for the overhead crane clamping jaws according to claim 1, characterized in that: The belt fixing member comprises a fixing portion arranged on the swinging member, a pressing portion detachably arranged on the fixing portion, and a clamping space formed between the fixing portion and the pressing portion.
6. The horizontal adjustment device for the overhead crane clamping jaws according to claim 1, characterized in that: The sensing component has a transmission component connected to a control module. When the sensing component senses the detection piece, a sensing signal is transmitted to the control module.
7. The horizontal adjustment device for the overhead crane clamping jaws according to claim 6, characterized in that: The control module is electrically connected to a warning component. When the control module receives all the sensing signals, it sends out a warning signal.
8. The horizontal adjustment device for the overhead crane clamping jaws according to claim 1, characterized in that: The detection piece is provided with a detection port.
9. The horizontal adjustment device for the overhead crane clamping jaws according to claim 1, characterized in that: The overhead crane gripper is a robotic arm used to grip wafer boxes and / or material box semiconductor carriers.