A rotary angle detecting device for a bucket wheel machine

Abstract

The utility model discloses a kind of rotary angle detection devices of bucket wheel machine, comprising: angle detection mechanism, between rotary mechanism and cab is installed, for realizing machine simple mechanical counter, wherein, angle detection mechanism includes disc chassis and the support located just below disc chassis, with linkage shaft fixed in disc chassis inside.The utility model mobile assembly will be when rotary mechanism rotates to specific angle, the arc wedge platform of disc chassis top contacts the support arm of specific position and lifts, synchronous belt drive support arm top's indicating platform and the digital identification bin of corresponding angle of indicating platform top, so that operating personnel can observe the position indicated by indicating platform, approximately determine the current rotary angle of bucket wheel machine, and then even if main angle sensor fails or deviation, the mechanical angle indicating mechanism can still provide intuitive, approximate position reference, ensure that coal stacking or coal extraction operation can continue, improve the overall operation reliability of equipment.

Description

Technical Field

[0001] This utility model relates to the field of bucket wheel excavator technology, and in particular to a bucket wheel excavator rotation angle detection device. Background Technology

[0002] Bucket wheel excavators, also known as bucket wheel stacker-reclaimers, are high-efficiency loading and unloading machines used in large dry bulk cargo yards. They are mainly used for stacking and reclaiming bulk materials such as coal, ore, and sand. Through the rotation and pitching of the boom and the rotation of the bucket wheel, they achieve continuous material conveying and storage. They can be integrated with unloading machines, belt conveyors, and other equipment to form a mechanized material yard transportation system, and are widely used in industrial sectors such as coal, mining, and ports. Bucket wheel excavators have both stacking and reclaiming operation modes, and their high efficiency, continuous operation, and automation make material loading, unloading, and storage more convenient and efficient.

[0003] Currently, the detection of the slewing angle of bucket wheel excavators mainly relies on the installation of angle sensors. For example, patent CN205449044U discloses a bucket wheel excavator slewing angle detection device. This device acquires slewing angle data by installing angle sensors. This design can provide relatively accurate slewing angle detection data, meeting basic application requirements. However, this device has significant drawbacks: on the one hand, the angle sensor may be damaged during long-term operation due to mechanical vibration, changes in ambient temperature, or accidental collisions. Once damaged, the bucket wheel excavator will be unable to accurately determine its slewing position, leading to the inability to carry out coal stacking or coal removal operations normally, seriously affecting work efficiency; on the other hand, the sensor replacement process is relatively complex, requiring shutdown for maintenance, which is time-consuming and labor-intensive, and may affect the continuous operation of the equipment. Therefore, the existing technology lacks a simple and reliable angle indication combination structure as a backup solution for the main measuring device, so as to still provide a rough position reference when the main device deviates or is damaged, thereby improving the reliability and ease of maintenance of the equipment. Utility Model Content

[0004] One objective of this invention is to provide a bucket wheel excavator rotation angle detection device. This invention addresses the significant drawbacks of the device mentioned in the background: on the one hand, the angle sensor may be damaged during long-term operation due to mechanical vibration, changes in ambient temperature, or accidental collisions. Once damaged, the bucket wheel excavator will be unable to accurately determine its rotation position, leading to the inability to carry out coal stacking or coal removal operations normally, severely affecting work efficiency; on the other hand, the sensor replacement process is relatively complex, requiring shutdown for maintenance, which is time-consuming and labor-intensive, and may affect the continuous operation of the equipment. Therefore, the existing technology lacks a simple and reliable angle indication combination structure as a backup solution for the main measuring device, so as to still provide a rough position reference when the main device deviates or is damaged.

[0005] A bucket wheel excavator rotation angle detection device according to an embodiment of the present invention includes: An angle detection mechanism, installed between the slewing mechanism and the cab, is used to realize a simple mechanical counter. The angle detection mechanism includes a disc base and a bracket located directly below the disc base, and a linkage shaft fixed inside the disc base. A linkage gear is fixedly installed at the bottom of the linkage shaft. An arc-shaped wedge is fixedly installed on one side of the top of the disc base. A disc top frame is rotatably installed on the upper outer end of the linkage shaft through a bearing seat. A circular support arm is movably installed inside the disc top frame. An elastic telescopic rod is fixedly installed at the bottom of the support arm. A moving component that moves on top of the disc base is installed at the bottom of the elastic telescopic rod. An indicator platform is fixedly installed on the top of the support arm. A digital label compartment is provided on the top of the indicator platform.

[0006] Preferably, the disc base is horizontally mounted on the operator's cab console.

[0007] Preferably, the bracket is fixedly installed on the housing of the rotary mechanism by a fastener.

[0008] Preferably, the fastener is a bolt.

[0009] Preferably, the linkage shafts pass through the interior of both the driver's cab and the slewing mechanism.

[0010] Preferably, the linkage gear is connected to the gear inside the rotary mechanism through a transmission component to achieve synchronous transmission, and the transmission component is a chain.

[0011] Preferably, the movable component includes a positioning frame fixed to the bottom of the elastic telescopic rod, and a roller is rotatably provided at the bottom of the positioning frame. The roller corresponds to the arc-shaped wedge and is used to lift the support arm after contact.

[0012] Preferably, the circular digital identification compartment is at a specific angle of 0 degrees, 90 degrees, 180 degrees, 270 degrees, and 360 degrees.

[0013] The beneficial effects of this utility model are: This invention effectively avoids the problem of existing technologies that rely solely on angle sensors, leading to the inability to determine the rotation position when the sensor malfunctions, thus affecting the reliability of normal operation. During operation, the rotational motion of the bucket wheel excavator's slewing mechanism is transmitted to the linkage gear through its internal gears and transmission components, driving the linkage shaft to rotate synchronously. The linkage shaft then drives the fixed disc base to rotate synchronously. The disc top frame is horizontally fixed to the operator's cab for easy viewing. At this time, the arc-shaped wedge platform on the disc base rotates synchronously with the slewing mechanism, and several support arms inside the disc top frame are connected... The moving component provides stable support during the rotation of the disc base. When the moving component rotates to a specific angle due to the slewing mechanism, the arc-shaped wedge at the top of the disc base contacts the support arm at a specific position and lifts up. This simultaneously drives the indicator platform at the top of the support arm and the digital marking compartment at the corresponding angle on the top of the indicator platform. In this way, the operator can roughly judge the current slewing angle of the bucket wheel excavator by observing the position indicated by the indicator platform. Even if the main angle sensor fails or deviates, this mechanical angle indication mechanism can still provide an intuitive and approximate position reference, ensuring that coal stacking or coal removal operations can continue and improving the overall operational reliability of the equipment. This invention utilizes an elastic telescopic rod. When the rollers in the moving assembly roll and rise on the arc-shaped wedge, the upward movement of the support arm is buffered and supported by the elastic telescopic rod. When the rollers disengage from the arc-shaped wedge, the elastic telescopic rod has a rebound force upon landing, which helps the support arm to return to its original position smoothly, reducing impact and avoiding problems such as unstable indication or mechanism jamming caused by mechanical vibration and wear. This reduces the frequency and difficulty of maintenance, and improves the durability and ease of maintenance of the device. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of one side of a bucket wheel excavator rotation angle detection device proposed in this utility model; Figure 2 This is a schematic diagram of the digital identification compartment structure of a bucket wheel excavator rotation angle detection device proposed in this utility model; Figure 3 This is a schematic diagram of the internal structure of a bucket wheel excavator rotation angle detection device proposed in this utility model; Figure 4 This is a schematic diagram of the support arm structure of a bucket wheel excavator rotation angle detection device proposed in this utility model; In the diagram: 1. Angle detection mechanism; 101. Disc base frame; 102. Support; 103. Fixing component; 104. Arc-shaped wedge platform; 105. Linkage shaft; 106. Linkage gear; 107. Disc top frame; 108. Bearing seat; 109. Outer shell; 110. Support arm; 111. Indicator platform; 112. Digital identification compartment; 113. Elastic telescopic rod; 114. Positioning frame; 115. Roller. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0016] refer to Figure 1-4 A bucket wheel excavator slewing angle detection device, comprising: An angle detection mechanism 1, installed between the slewing mechanism and the cab, is used to realize a simple mechanical counter. The angle detection mechanism 1 includes a disc base 101 and a bracket 102 located directly below the disc base 101, and a linkage shaft 105 fixed inside the disc base 101. A linkage gear 106 is fixedly installed at the bottom of the linkage shaft 105. An arc-shaped wedge 104 is fixedly installed on one side of the top of the disc base 101. A disc top bracket 107 is rotatably mounted on the upper outer end of the linkage shaft 105 via a bearing seat 108. The internal circular support arm 110 is movably mounted. An elastic telescopic rod 113 is fixedly mounted at the bottom of each support arm 110. The elastic telescopic rod has a rebound force upon landing, helping the support arm to return to its original position smoothly and reducing impact. A movable component is mounted at the bottom of the elastic telescopic rod 113, located on top of the circular base frame 101. The movable component includes a positioning frame 114 fixed to the bottom of the elastic telescopic rod 113. A roller 115 is rotatably mounted at the bottom of the positioning frame 114, corresponding to the arc-shaped wedge 104, used to lift the support arm 110 upon contact. 10. An indicator platform 111 is fixedly installed on the top of the support arm 110. The top of the indicator platform 111 is equipped with a digital identification compartment 112. The rotational motion of the bucket wheel excavator's slewing mechanism is transmitted to the linkage gear through its internal gears and transmission components, driving the linkage shaft to rotate synchronously. The linkage shaft drives the fixed disc base on it to rotate synchronously. The disc top frame is horizontally fixed to the operator's cab for easy viewing by the operator. At this time, the arc-shaped wedge on the disc base rotates synchronously with the slewing mechanism. Several support arms inside the disc top frame are stably supported by the moving component during the rotation of the disc base. Then, when the slewing mechanism rotates to a specific angle, the moving component will lift after the arc-shaped wedge on the top of the disc base contacts the support arm at a specific position, synchronously driving the indicator platform on the top of the support arm and the digital identification compartment at the corresponding angle on the top of the indicator platform. In this way, the operator can roughly judge the current slewing angle of the bucket wheel excavator by observing the position indicated by the indicator platform. Even if the main angle sensor fails or deviates, this mechanical angle indicator mechanism can still provide an intuitive and approximate position reference, ensuring that coal stacking or coal removal operations can continue.

[0017] Example 1: The disc base 101 is horizontally installed on the operator's cab control panel to facilitate the operator's observation of specific angle values ​​on the disc base 101. The bracket 102 is fixedly installed on the housing of the slewing mechanism by a fastener 103, which is a bolt, to ensure the stability of the bracket and its connection with the slewing part. The linkage shaft 105 passes through the cab and the interior of the slewing mechanism, respectively, and can transmit the rotation of the slewing mechanism to the linkage shaft, and transmit this rotation to the upper disc top frame 107 and related components, thereby realizing the mechanical detection and indication of angle.

[0018] Example 2: The linkage gear 106 is connected to the gear inside the slewing mechanism through the transmission component to achieve synchronous transmission. The transmission component is a chain. The circular digital identification compartment 112 is at specific angles of 0 degrees, 90 degrees, 180 degrees, 270 degrees and 360 degrees, so that the operator can quickly and intuitively read the approximate main direction of the bucket wheel excavator in the cab, which is convenient for positioning operations of stacking and reclaiming.

[0019] Working Principle: The rotational motion of the bucket wheel excavator's slewing mechanism is transmitted to the linkage gear through its internal gears and transmission components, driving the linkage shaft to rotate synchronously. The linkage shaft drives the fixed disc base to rotate synchronously. The disc top frame is horizontally fixed to the operator's cab for easy viewing. The arc-shaped wedge on the disc base rotates synchronously with the slewing mechanism. Several support arms inside the disc top frame are stably supported during the rotation of the disc base frame via a moving component. The moving component includes a positioning frame fixed to the bottom of the elastic telescopic rod. Rollers are rotatably mounted on the bottom of the positioning frame, and the rollers correspond to the arc-shaped wedges for lifting the support arms upon contact. The elastic telescopic rod... Upon landing, the mechanism possesses a rebound force, which helps the support arm to return to its original position smoothly and reduces impact. An indicator platform is fixedly installed on the top of the support arm, with a digital marking compartment on top of the platform. The marking compartment indicates specific angles of 0 degrees, 90 degrees, 180 degrees, 270 degrees, and 360 degrees. When the slewing mechanism rotates to a specific angle, the arc-shaped wedge platform on the top of the disc base frame contacts the support arm at a specific position and lifts up, driving the indicator platform on top of the support arm and the corresponding digital marking compartment. By observing the position indicated by the indicator platform, the operator can roughly judge the current slewing angle of the bucket wheel excavator, ensuring that coal stacking or coal removal operations can continue, even if the main angle sensor malfunctions or deviates.

[0020] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for detecting the slewing angle of a bucket wheel excavator, characterized in that, include: An angle detection mechanism (1) is installed between the slewing mechanism and the cab to realize a simple mechanical counter. The angle detection mechanism (1) includes a disc base (101) and a bracket (102) located directly below the disc base (101), and a linkage shaft (105) fixed inside the disc base (101). A linkage gear (106) is fixedly installed at the bottom of the linkage shaft (105), and an arc-shaped wedge (104) is fixedly installed on one side of the top of the disc base (101). A disc top frame (107) is rotatably mounted on the upper outer side via a bearing seat (108). The disc top frame (107) is circular inside and has a movable support arm (110). An elastic telescopic rod (113) is fixedly mounted at the bottom of the support arm (110). A movable component that moves on top of the disc base frame (101) is installed at the bottom of the elastic telescopic rod (113). An indicator platform (111) is fixedly mounted on the top of the support arm (110). A digital identification compartment (112) is provided on the top of the indicator platform (111).

2. The bucket wheel excavator rotation angle detection device according to claim 1, characterized in that, The disc base frame (101) is horizontally mounted on the cab control panel.

3. The bucket wheel excavator rotation angle detection device according to claim 1, characterized in that, The bracket (102) is fixedly installed on the housing of the rotary mechanism by a fastener (103).

4. The bucket wheel excavator rotation angle detection device according to claim 3, characterized in that, The fastener (103) is a bolt.

5. The bucket wheel excavator rotation angle detection device according to claim 1, characterized in that, The linkage shaft (105) passes through the interior of the cab and the slewing mechanism respectively.

6. The bucket wheel excavator rotation angle detection device according to claim 1, characterized in that, The linkage gear (106) is connected to the gear inside the rotary mechanism through a transmission component to achieve synchronous transmission. The transmission component is a chain.

7. The bucket wheel excavator rotation angle detection device according to claim 1, characterized in that, The moving component includes a positioning frame (114) fixed to the bottom of the elastic telescopic rod (113). The bottom of the positioning frame (114) is rotatably provided with a roller (115). The roller (115) corresponds to the arc-shaped wedge (104) and is used to lift the support arm (110) after contact.

8. The bucket wheel excavator slewing angle detection device according to claim 1, characterized in that, The circular digital identification compartment (112) is at specific angles of 0 degrees, 90 degrees, 180 degrees, 270 degrees and 360 degrees.

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