Double limiting structure for slewing of mine-used bottom cleaning machine

Abstract

The utility model is suitable for mine machinery and electrical control technical field provides a kind of for mining bottom cleaning machine rotation's double limit structure, it include: fixed base;Rotary support, rotary support is connected between fixed base by rotary reducer;Hydraulic motor, the hydraulic motor is used to drive rotary reducer inner ring rotation;Limit pin, limit pin inserts the hole in rotary support and extends into the limit slot of fixed base;And angle sensor for detecting the rotation angle of rotary support, through electrical detection rotation angle will reach limit when reducing in advance, reduce the loss of mechanical collision, limit stop pin can effectively stop rotation, when stop pin has abrasion, can be corrected abrasion amount by turning 90 degrees;The utility model can improve control precision and operation quality, enhance system reliability and security, improve environmental adaptability and maintenance convenience, prolong equipment service life and reduce maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of mining machinery and electrical control technology, specifically a double-limiting structure for the rotation of a mine bottom cleaning machine. Background Technology

[0002] In mining operations, the mine cleaning machine is an important piece of equipment, and the precise limit of its slewing mechanism is crucial for the normal operation of the equipment and the quality of the operation.

[0003] Currently, the existing rotary limit structure of mine bottom cleaning machines mainly has the following problems:

[0004] (1) Disadvantages and causes of single mechanical rotation limit:

[0005] Wear and Precision Decrease: Rotary mechanisms typically require high-frequency, large-angle rotational movements. Single mechanical limit structures, such as cams and stops, are prone to wear due to frequent friction during long-term use. Once wear occurs, it directly leads to a shift in the limit position, significantly reducing the control precision of the rotation angle. This can not only cause overload of the cleaning mechanism but also create blind spots, severely impacting the quality and efficiency of the cleaning operation.

[0006] Poor environmental adaptability: The mining environment is extremely harsh, with large amounts of dust, humid air, and continuous vibration. These factors accelerate the corrosion and loosening of mechanical limiting components. For example, dust intrusion into mechanical gaps may cause mechanical parts to jam and malfunction; while vibration may cause the limiting components to shift, further reducing the reliability of the limit and increasing the risk of equipment failure.

[0007] Adjustment and maintenance are complex: When the mechanical limit structure needs adjustment, manual disassembly is required. For rotary mechanisms, the adjustment process often requires disassembling multiple fasteners and calibrating the angles. This process is not only time-consuming and labor-intensive but also prone to human error, resulting in the adjusted limit accuracy still failing to meet requirements. Furthermore, frequent adjustments and maintenance increase maintenance costs and severely impact equipment operating efficiency.

[0008] (2) Disadvantages and causes of a single electrical rotary limit switch:

[0009] Electromagnetic interference and signal distortion: Numerous sources of electromagnetic interference exist in the mining environment, such as motors and frequency converters. Single electrical limit structures, like encoders and proximity switches, are highly susceptible to electromagnetic interference in this environment, leading to signal misinterpretation or loss. Furthermore, the rapid movement of rotary mechanisms can also generate electromagnetic noise, further exacerbating signal distortion and significantly reducing the accuracy and reliability of electrical limit switches.

[0010] Dust and humid environments can negatively impact electrical sensors. Dust can easily adhere to the surface of electrical sensors, hindering signal transmission and preventing the sensors from accurately detecting the rotation angle. Humid environments can cause short circuits or degrade the insulation performance of electrical components, and in severe cases, may even lead to malfunctions, affecting the normal operation of the equipment.

[0011] Reliability bottleneck: Electrical components have a shorter lifespan and a higher failure rate in harsh mining environments. The continuous movement of the rotary mechanism also accelerates the aging of electrical components, significantly increasing the risk of limit switch failure and posing a threat to the safe operation of the equipment.

[0012] Therefore, in view of the above situation, there is an urgent need to provide a double limit structure for the rotation of a mine bottom cleaning machine to overcome the shortcomings in current practical applications. Utility Model Content

[0013] The purpose of this utility model is to provide a double limiting structure for the rotation of a mine bottom cleaning machine, which aims to solve the problems in the background art mentioned above.

[0014] This utility model is implemented as follows: a double-limiting structure for the rotation of a mine bottom cleaning machine, comprising:

[0015] Fixed base;

[0016] A slewing support, wherein the slewing support is connected to the fixed base via a slewing reducer;

[0017] A hydraulic motor is used to drive the inner ring of a rotary reducer to rotate.

[0018] A limiting pin is inserted into the hole of the slewing support and extends into the limiting groove of the fixed base;

[0019] And an angle sensor for detecting the rotation angle of the slewing bearing.

[0020] As a further embodiment of this utility model: the outer ring of the rotary reducer is fixed on the fixed base, and the inner ring is fixedly connected to the rotary support.

[0021] As a further embodiment of this utility model, the limiting pin and the slewing support are fixedly connected by bolts.

[0022] As a further embodiment of this utility model, the limiting pin is provided with a plurality of fixing holes for compensating for wear.

[0023] As a further embodiment of this utility model, the number of fixing holes is four.

[0024] As a further embodiment of this utility model, the limiting groove of the fixed base is arc-shaped.

[0025] As a further embodiment of this invention, the angle sensor is an absolute encoder or a Hall sensor.

[0026] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0027] Angle sensors can accurately detect the angle of the slewing bearing and control the hydraulic motor to decelerate in advance when the set value is reached, so that the slewing mechanism can stop smoothly, thereby improving the control accuracy of the slewing angle and ensuring the quality of the bottom clearing operation.

[0028] The dual limit structure allows the mechanical limit to serve as a backup in case of electrical limit failure, ensuring that the rotary mechanism can be reliably stopped and avoiding equipment failure or safety accidents caused by limit failure, thus enhancing the reliability and safety of the system.

[0029] The combination of electrical and mechanical limit switches allows for better adaptation to the harsh environment of mines. Furthermore, when the limit pins wear out, simply rotating and re-locking them restores the limit accuracy, greatly improving maintenance convenience and reducing costs.

[0030] Early deceleration reduces wear and tear from mechanical collisions, extending the service life of limit pins and other mechanical components. Simultaneously, simplified maintenance operations lower maintenance costs and improve equipment operating efficiency. Attached Figure Description

[0031] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of this utility model.

[0033] Figure 2 This is a schematic diagram of the limiting pin in this utility model.

[0034] In the attached diagram: 1-fixed base, 2-hydraulic motor, 3-slewing support, 4-bolt, 5-limit pin, 6-angle sensor, 7-slewing reducer. Detailed Implementation

[0035] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0036] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0039] Please see Figure 1 and Figure 2 This utility model provides a double limiting structure for the rotation of a mine cleaning machine. The double limiting structure for the rotation of the mine cleaning machine includes a fixed base 1, a hydraulic motor 2, a rotation support 3, bolts 4, limiting pins 5, an angle sensor 6, and a rotation reducer 7.

[0040] The outer ring of the rotary reducer 7 is fixed to the fixed base 1, and the rotary support 4 is fixed to the inner ring of the rotary reducer 7. The hydraulic motor 2 drives the inner ring of the rotary reducer 7 to rotate. The angle sensor 6 can detect the angle of the rotary support 3. The limit pin 5 is inserted into the hole of the rotary support 3 and extends into the limit groove of the fixed base 1. When the rotary support 3 rotates, the angle sensor 6 obtains its rotation angle and performs electrical limiting according to the set value. At the same time, the limit pin 5 performs mechanical limiting due to the limitation of the limit groove of the fixed base 1. After long-term use, the limit pin 5 will wear. At this time, the bolt 4 can be removed, the limit pin 5 can be rotated and re-fixed through another hole, thus restoring the limiting accuracy.

[0041] In the embodiments of this utility model, the safety and redundancy of the limit are ensured by the dual limit of electrical and mechanical means, and the wear of the limit pin is easily adjusted and compensated, which can effectively extend the service life of the limit pin.

[0042] By electrically detecting the rotation angle, the speed is reduced in advance when the limit is reached, thus reducing mechanical collision damage. The limit stop pin can effectively stop the rotation. When the stop pin is worn, the wear can be corrected by turning it 90 degrees.

[0043] This invention can improve control precision and operation quality, enhance system reliability and safety, improve environmental adaptability and maintenance convenience, extend equipment service life and reduce maintenance costs.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A double-limiting structure for the rotation of a mine bottom cleaning machine, comprising a fixed base (1), characterized in that, Also includes: Rotary support (3), the rotary support (3) is connected to the fixed base (1) by a rotary reducer (7); Hydraulic motor (2), the hydraulic motor (2) is used to drive the inner ring of the rotary reducer (7) to rotate; Limiting pin (5), the limiting pin (5) is inserted into the hole of the rotary support (3) and extends into the limiting groove of the fixed base (1); And an angle sensor (6) for detecting the rotation angle of the slewing support (3).

2. The double-limiting structure for the rotation of a mine bottom cleaning machine according to claim 1, characterized in that, The outer ring of the rotary reducer (7) is fixed on the fixed base (1), and the inner ring is fixedly connected to the rotary support (3).

3. The double-limiting structure for the rotation of a mine bottom cleaning machine according to claim 1, characterized in that, The limiting pin (5) is fixedly connected to the slewing support (3) by bolts (4).

4. The double-limiting structure for the rotation of a mine bottom cleaning machine according to claim 1, characterized in that, The limiting pin (5) is provided with multiple fixing holes for compensating for wear.

5. The double-limiting structure for the rotation of a mine bottom cleaning machine according to claim 4, characterized in that, The number of fixing holes is four.

6. The double-limiting structure for the rotation of a mine bottom cleaning machine according to claim 1, characterized in that, The limiting groove of the fixed base (1) is arc-shaped.

7. The double-limiting structure for the rotation of a mine bottom cleaning machine according to claim 1, characterized in that, The angle sensor (6) is an absolute encoder or a Hall sensor.

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