A vibration early warning mechanism for the rocker arm of a coal mining machine
By combining the side slide plate and electromagnetic adsorption with gear transmission, the problem of needing to stop and disassemble the rocker arm vibration early warning mechanism of the coal mining machine is solved, realizing rapid installation and precise positioning, and improving the continuity of equipment operation and ease of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WANGZHUANG COAL MINE SHANXI LUAN ENVIRONMENT PROTECTION ENERGY SOURCE SWITCH
- Filing Date
- 2025-09-25
- Publication Date
- 2026-07-17
AI Technical Summary
The existing rocker arm vibration early warning mechanism of the coal mining machine requires the machine to be stopped, disassembled and reinstalled, which is troublesome, interrupts equipment operation and reduces production efficiency.
By adopting a side slide plate and limiting slide bar structure, combined with electromagnetic adsorption and gear transmission, the monitoring mechanism can be quickly installed and accurately positioned, avoiding the cumbersome disassembly and assembly of traditional methods, adapting to underground scenarios and shortening the time required.
It enables rapid installation and adjustment of monitoring positions without shutting down the machine, improving the continuity of equipment operation, reducing manual labor consumption, and adapting to operation in confined underground spaces.
Smart Images
Figure CN224515178U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of vibration sensing and early warning equipment for coal mining machine rocker arms, specifically a vibration sensing and early warning mechanism for coal mining machine rocker arms. Background Technology
[0002] The rocker arm of the coal mining machine is the core component connecting the machine body and the cutting drum. Its main function is to transmit motor power to drive the drum to cut coal, and to adjust the drum height by adjusting the hydraulic cylinder to adapt to different coal seam thicknesses. It will inevitably generate vibration during operation, mainly due to the periodic load fluctuation of the cutting teeth cutting the coal wall, the inherent imbalance of the internal transmission components, and external working condition interference. Excessive vibration will shorten the service life of components and affect the coal mining quality. It needs to be reasonably managed through design optimization, precision control and operation and maintenance monitoring.
[0003] The rocker arm vibration early warning mechanism is a device that uses vibration sensors for monitoring. It is usually installed at key locations on the rocker arm housing or transmission components. When the vibration parameters detected exceed the preset safety threshold, an early warning signal will be issued to remind the staff to stop the machine in time to troubleshoot the fault, thereby avoiding excessive vibration that could damage the rocker arm components and reduce the quality of coal mining.
[0004] However, if existing institutions need to adjust the monitoring location, they often have to shut down the machine and disassemble and reassemble it completely, which is not only troublesome to operate, but also interrupts equipment operation and reduces production efficiency. Utility Model Content
[0005] The purpose of this utility model is to provide a vibration early warning mechanism for the rocker arm of a coal mining machine in order to solve the above problems.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a vibration sensing and early warning mechanism for a coal mining machine rocker arm, comprising: a side slide plate and a top mounting block, a vertical block fixedly connected to one end of the top mounting block, a limiting slide rod fixedly connected to one side of the vertical block, an arc-shaped half-sleeve movably sliding at the upper outer end of the limiting slide rod, an L-shaped support plate fixedly connected to one top end of the arc-shaped half-sleeve, a monitoring mechanism provided on one side of the L-shaped support plate, a drive fixing mechanism provided on one side of the side slide plate, and a magnetically conductive long steel sheet fixedly connected to the inner side of the side slide plate.
[0007] As a further embodiment of this utility model: the monitoring mechanism includes a protective chamber, a vibration sensor, and a signal transmitter. The protective chamber is movably inserted into one side of the L-shaped support plate base, and the protective chamber and the L-shaped support plate base are fixedly connected by bolts. The vibration sensor is fixedly connected to one end inside the protective chamber, and the signal transmitter is fixedly connected to the other end inside the protective chamber. The vibration sensor and the signal transmitter are electrically connected. A breathable filter screen and an inspection port are also included. The breathable filter screen is fixedly connected to one side of the protective chamber, and the inspection port is located at the middle of the bottom of the protective chamber.
[0008] As a further embodiment of this utility model: the driving and fixing mechanism includes a sliding side base, a rack, and a motor housing. The sliding side base is movably slidably connected to one side of the side slide plate. The bottom of the L-shaped support plate is fixedly connected to the sliding side base. The rack is fixedly connected to one end of the side slide plate. The motor housing is fixedly connected to one end of the outer side of the sliding side base. A rotating shaft, a gear, and a fixing assembly are also included. The rotating shaft is rotatably connected to the lower middle of the L-shaped support plate. The gear is fixedly connected to one end of the rotating shaft. The fixing assembly is located in the middle of the sliding side base.
[0009] As a further embodiment of this utility model: the rack meshes with the gear, and the other end of the rotating shaft extends into the motor compartment, where a motor and gear transmission assembly are integrated and connected to the other end of the rotating shaft.
[0010] As a further embodiment of this utility model: the fixing assembly includes a sliding rod, an electric push rod, and an outer plate. The sliding rod is slidably connected to one end inside the sliding side base, and both ends of the sliding side base extend to both sides of the sliding side base. The electric push rod is fixedly connected to the middle of the outer side of the sliding side base, and the outer plate is fixedly connected to one end of the sliding rod extending to one side of the sliding side base. The assembly also includes a housing, a power supply, and an electromagnetic block. The housing is fixedly connected to one end of the sliding rod extending to the other side of the sliding side base. The power supply is fixedly connected to the back of the housing, and the electromagnetic block is fixedly connected to the front of the housing. The power supply and the electromagnetic block are electrically connected.
[0011] As a further improvement of this utility model: multiple sets of mounting lugs are symmetrically fixedly connected to the top and bottom of the side slide plate, and each set of mounting lugs has a mounting through hole in the middle. The top mounting block also has mounting through holes on both sides.
[0012] As a further embodiment of this utility model: both the top mounting block and the limiting slide rod are provided in two sets, with two sets of upright blocks above each set of top mounting blocks, and each set of limiting slide rods is located between the two sets of upright blocks.
[0013] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the side slide plate is fixed to the side of the rocker arm via mounting lugs and mounting through holes. The top mounting block, upright block, and limiting slide rod are fixed to the top surface of the rocker arm via the mounting through holes, avoiding the cumbersome disassembly and assembly of traditional integrated components. This design is suitable for underground scenarios and reduces time consumption. The sliding side base is inserted into the side of the side slide plate, and the arc-shaped half of the L-shaped support plate is fitted onto the limiting slide rod, completing the installation of the monitoring and drive mechanism. The electric push rod drives the components to slide, and the electromagnetic block is attached to the magnetic steel sheet for power supply and adsorption fixation, eliminating the need for bolt tightening. This design prevents coal dust from jamming and rust from forming, and is labor-saving and easy for single-person operation. When the electromagnetic block is de-energized, the motor drives the gear to mesh with the rack, moving the sliding side base, L-shaped support plate, and monitoring mechanism. Once in position, the electromagnetic block is powered and fixed, providing double constraints to prevent tilting and jamming. The monitoring mechanism is accurately positioned without the need for machine shutdown and disassembly, ensuring continuous operation. The sensor inside the protective housing collects signals, and the transmitter transmits signals. The housing is detachable and has an inspection port at the bottom for easy inspection of components. The breathable filter dissipates heat and ensures the stability of the monitoring components. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the L-shaped support plate base in this utility model; Figure 3 This is a schematic diagram of the monitoring mechanism in this utility model; Figure 4 This is a schematic diagram of the drive fixing mechanism in this utility model; Figure 5 This is a schematic diagram of the fixing component in this utility model.
[0015] In the diagram: 1. Side slide plate; 2. Top mounting block; 3. Vertical block; 4. Limiting slide rod; 5. Arc-shaped half-sleeve; 6. L-shaped support plate seat; 7. Monitoring mechanism; 71. Protective compartment; 72. Vibration sensor; 73. Signal transmitter; 74. Breathable filter screen; 75. Inspection bottom opening; 8. Drive fixing mechanism; 81. Sliding side base; 82. Rack; 83. Motor compartment; 84. Rotating shaft; 85. Gear; 86. Fixing assembly; 861. Slide rod; 862. Electric push rod; 863. Outer plate; 864. Outer shell seat; 865. Power supply; 866. Electromagnetic block; 9. Magnetic long steel sheet; 10. Mounting lug; 11. Mounting through hole. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] 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. They 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. Therefore, they should not be construed as limitations on 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. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" 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 can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.
[0018] Reference Figures 1 to 5 In this embodiment of the utility model, a rocker arm vibration early warning mechanism for a coal mining machine includes: a side slide plate 1 and a top mounting block 2. The side slide plate 1 serves as the core mounting base and sliding rail, and the top mounting block 2 serves as another base mounting part. A vertical block 3 is fixedly connected to one end of the top mounting block 2. A limiting slide rod 4 is fixedly connected to one side of the vertical block 3. An arc-shaped half-sleeve 5 is movably slidably connected to the upper outer side of the limiting slide rod 4. The vertical block 3 serves as a support connecting the top mounting block 2 and the limiting slide rod 4. The limiting slide rod 4 and the arc-shaped half-sleeve 5 cooperate to achieve guidance. The arc-shaped half-sleeve 5 serves as a connecting and sliding component.
[0019] The top end of the arc-shaped half-set 5 is fixedly connected to an L-shaped support plate seat 6, which serves as the core for bearing and connection. A monitoring mechanism 7 is provided on one side above the L-shaped support plate seat 6. A drive fixing mechanism 8 is provided on one side of the side slide plate 1. A magnetically conductive long steel sheet 9 is fixedly connected to the inside of the side slide plate 1. In conjunction with other components, the mechanism is fixed through electromagnetic adsorption. There are two sets of top mounting blocks 2 and limit slide rods 4. Each set of top mounting blocks 2 has two sets of upright blocks 3 above it. Each set of limit slide rods 4 is located between the two sets of upright blocks 3.
[0020] Reference Figure 1 and Figure 3 The monitoring mechanism 7 includes a protective housing 71, a vibration sensor 72, and a signal transmitter 73. The protective housing 71 is movably inserted into one side above the L-shaped support plate 6, and the protective housing 71 and the L-shaped support plate 6 are fixedly connected by bolts. The vibration sensor 72 is fixedly connected to one end inside the protective housing 71, and the signal transmitter 73 is fixedly connected to the other end inside the protective housing 71. The vibration sensor 72 and the signal transmitter 73 are electrically connected. The air-permeable filter 74 and the maintenance port 75 are fixedly connected to one side of the protective chamber 71. The maintenance port 75 is located at the middle of the bottom of the protective chamber 71. The vibration sensor 72 collects the vibration signal of the rocker arm in real time and transmits the signal to the signal transmitter 73. The signal transmitter 73 then transmits the vibration signal to the outside. The protective chamber 71 can be removed from the L-shaped support plate 6 by bolts. The maintenance port 75 at the bottom of the protective chamber 71 facilitates the inspection of the vibration sensor 72 and the signal transmitter 73. The air-permeable filter 74 serves a heat dissipation function.
[0021] Reference Figure 1 , Figure 4 and Figure 5 The drive fixing mechanism 8 includes a sliding side base 81, a rack 82 and a motor compartment 83. The sliding side base 81 is movably slidably connected to one side of the side slide plate 1. The bottom of the L-shaped support plate 6 is fixedly connected to the sliding side base 81. The rack 82 is fixedly connected to one end of the side slide plate 1. The motor compartment 83 is fixedly connected to one end of the outer side of the sliding side base 81. The rotating shaft 84, gear 85, and fixing component 86 are rotatably connected to the lower middle of the L-shaped support plate seat 6, the gear 85 is fixedly connected to one end of the rotating shaft 84, and the fixing component 86 is located in the middle of the sliding side base 81. Rack 82 meshes with gear 85. The other end of shaft 84 extends into motor housing 83. Motor housing 83 integrates a motor and gear transmission assembly, which is connected to the other end of shaft 84. The motor housing 83 drives shaft 84 to rotate, causing gear 85, which is fixed at one end of shaft 84, to rotate synchronously. Since gear 85 meshes with rack 82 above side slide plate 1, the rotation of gear 85 is converted into linear sliding of sliding base 81 along side slide plate 1. Through the sliding engagement of arc-shaped half sleeve 5 and limiting slide rod 4, the movement of sliding base 81 drives L-shaped support plate 6 to move synchronously. Thus, monitoring mechanism 7 on L-shaped support plate 6 moves to the designated monitoring position. Through the dual constraint of side rack 82 transmission and top limiting slide rod 4 guidance, the tilting and jamming of mechanism caused by single guidance are avoided, allowing monitoring mechanism 7 to move accurately to different key monitoring points and meet the precise positioning requirements of vibration monitoring in different parts.
[0022] Reference Figure 1 , Figure 4 and Figure 5 The fixing component 86 includes a slide rod 861, an electric push rod 862, and an outer plate 863. The slide rod 861 is slidably connected to one end inside the sliding side base 81, and both ends of the sliding side base 81 extend to both sides of the sliding side base 81. The electric push rod 862 is fixedly connected to the middle of the outer side of the sliding side base 81, and the outer plate 863 is fixedly connected to one end of the slide rod 861 that extends to one side of the sliding side base 81. The housing 864 comprises a base, a power supply 865, and an electromagnetic block 866. The base 864 is fixedly connected to one end of the slide rod 861 extending to the other side of the sliding base 81. The power supply 865 is fixedly connected to the back of the base 864, and the electromagnetic block 866 is fixedly connected to the front of the base 864. The power supply 865 and the electromagnetic block 866 are electrically connected. The movable end of the electric push rod 862 is retracted, causing the outer plate 863 to drive the slide rod 861 to slide towards the side slide plate 1 until it reaches the inner surface of the front of the base 864. The electromagnetic block 866 is attached to the magnetically conductive long steel sheet 9. At this time, the power supply 865 supplies power to the electromagnetic block 866. The electromagnetic block 866 generates magnetic force and is attracted to the magnetically conductive long steel sheet 9, thereby completing the fixation of the entire drive fixing mechanism 8, the L-shaped support plate seat 6 and the monitoring mechanism 7. This allows for quick assembly and disassembly without manually tightening multiple sets of bolts to complete the locking, avoiding the problem of bolt jamming and corrosion caused by coal dust, which makes disassembly difficult. At the same time, it reduces the physical consumption of manually tightening bolts and improves the feasibility of single-person operation.
[0023] Reference Figure 1 and Figure 2Multiple sets of mounting lugs 10 are symmetrically fixedly connected to the top and bottom of the side slide plate 1. Each set of mounting lugs 10 has a mounting through hole 11 in the middle. The top mounting block 2 also has mounting through holes 11 on both sides. The entire side slide plate 1 is fixedly installed on the side of the coal mining machine rocker arm through the mounting lugs 10 and mounting through holes 11 on the top and bottom of the side slide plate 1. The top mounting block 2, the vertical block 3 and the limiting slide rod 4 are also fixed to the top surface of the coal mining machine rocker arm through the mounting through holes 11. After these basic structures are fixed, the main mechanism can be installed and disassembled.
[0024] The working principle of this utility model is as follows: When in use, the entire side slide plate 1 is first fixedly installed on the side of the coal mining machine rocker arm through the mounting lugs 10 and mounting through holes 11 on the upper and lower sides of the side slide plate 1. The top mounting block 2, the vertical block 3 and the limiting slide rod 4 are also fixed to the top surface of the coal mining machine rocker arm through the mounting through holes 11. After these basic structures are fixed, the main mechanisms can be installed and disassembled. This avoids the cumbersome process of disassembling and assembling the whole in the traditional integrated structure. It is especially suitable for the scenario where the underground space is small and the operating tools are limited, which greatly shortens the disassembly and assembly time. Then, the sliding base 81 is inserted into the side of the side slide plate 1, and the arc-shaped half-sleeve 5 at the bottom of the L-shaped support plate 6 is put onto the limiting slide rod 4, thereby completing the installation of the monitoring mechanism 7 and the drive fixing mechanism 8. At this time, the movable end of the electric push rod 862 is retracted, causing the outer plate 863 to drive the slide rod 861 to slide towards the side slide plate 1 until the electromagnetic block 866 in the front of the outer shell 864 is in contact with the magnetic long steel sheet 9. At this time, the power supply 865 supplies power to the electromagnetic block 866, and the electromagnetic block 866 generates magnetic force to attract onto the magnetic long steel sheet 9, thereby completing the fixing of the entire drive fixing mechanism 8, the L-shaped support plate 6 and the monitoring mechanism 7. This allows for quick assembly and disassembly without manually tightening multiple sets of bolts to complete the locking, avoiding the problem of bolt jamming and corrosion caused by coal dust, and reducing the physical consumption of manually tightening bolts, thus improving the feasibility of single-person operation. When position adjustment is required, the electromagnetic block 866 is first de-energized, and then the rotating shaft 84 is driven to rotate through the motor compartment 83, causing the gear 85 fixed at one end of the rotating shaft 84 to rotate synchronously. Since the gear 85 meshes with the rack 82 above the side slide plate 1, the rotation of the gear 85 is converted into the linear sliding of the sliding base 81 along the side slide plate 1. Through the sliding cooperation of the arc-shaped half sleeve 5 and the limiting slide rod 4, the movement of the sliding base 81 drives the L-shaped support plate 6 to move synchronously. As a result, the monitoring mechanism 7 on the L-shaped support plate 6 moves to the designated monitoring position. Then, the electromagnetic block 866 is powered on and kept fixed. Through the dual constraint of the side rack 82 transmission and the top limiting slide rod 4 guidance, the tilting and jamming of the mechanism caused by the single guidance are avoided, so that the monitoring mechanism 7 can move accurately to different key monitoring points, meet the precise positioning requirements of vibration monitoring in different parts, and does not require stopping the machine to disassemble and reassemble, thus improving the continuity of equipment operation. During monitoring, the vibration sensor 72 inside the protective chamber 71 collects the vibration signal of the rocker arm in real time and transmits the signal to the signal transmitter 73. The signal transmitter 73 then transmits the vibration signal to the outside. The protective chamber 71 can be removed from the L-shaped support plate 6 by bolts. The bottom of the protective chamber 71 is provided with an inspection port 75, which can facilitate the inspection of the vibration sensor 72 and the signal transmitter 73. The breathable filter screen 74 serves to dissipate heat.
[0025] 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 shearer arm vibration early warning mechanism, characterized in that, include: The side slide plate (1) and the top mounting block (2) are provided. A vertical block (3) is fixedly connected to one end of the top mounting block (2). A limiting slide rod (4) is fixedly connected to one side of the vertical block (3). An arc-shaped half sleeve (5) is movably slidably connected to the upper outer side of the limiting slide rod (4). An L-shaped support plate seat (6) is fixedly connected to one end of the top of the arc-shaped half sleeve (5). A monitoring mechanism (7) is provided on one side of the L-shaped support plate seat (6). A drive fixing mechanism (8) is provided on one side of the side slide plate (1). A magnetic long steel sheet (9) is fixedly connected to the inner side of the side slide plate (1).
2. The shearer arm vibration early warning mechanism according to claim 1, characterized in that, The monitoring agency (7) includes: The protective compartment (71), vibration sensor (72), and signal transmitter (73) are provided. The protective compartment (71) is movably inserted into one side of the upper part of the L-shaped support plate seat (6), and the protective compartment (71) and the L-shaped support plate seat (6) are fixedly connected by bolts. The vibration sensor (72) is fixedly connected to one end inside the protective compartment (71), and the signal transmitter (73) is fixedly connected to the other end inside the protective compartment (71). The vibration sensor (72) and the signal transmitter (73) are electrically connected. The air-permeable filter screen (74) and the maintenance bottom opening (75) are fixedly connected to one side of the protective chamber (71), and the maintenance bottom opening (75) is opened at the middle of the bottom of the protective chamber (71).
3. The shearer arm vibration early warning mechanism according to claim 1, characterized in that, The drive fixing mechanism (8) includes: The sliding side base (81), rack (82) and motor housing (83) are provided. The sliding side base (81) is movably slidably connected to one side of the side slide plate (1). The bottom of the L-shaped support plate (6) is fixedly connected to the sliding side base (81). The rack (82) is fixedly connected to one end of the side slide plate (1). The motor housing (83) is fixedly connected to one end of the outer side of the sliding side base (81). The rotating shaft (84), gear (85), and fixing component (86) are rotatably connected to the middle of the lower part of the L-shaped support plate seat (6), the gear (85) is fixedly connected to one end of the rotating shaft (84), and the fixing component (86) is located in the middle of the sliding side base (81).
4. The shearer arm vibration early warning mechanism according to claim 3, characterized in that, The rack (82) meshes with the gear (85), and the other end of the shaft (84) extends into the motor housing (83). The motor housing (83) integrates a motor and gear transmission assembly that is connected to the other end of the shaft (84) for transmission.
5. The shearer arm vibration early warning mechanism according to claim 3, characterized in that, The fixing component (86) includes: The slide rod (861), the electric push rod (862), and the outer plate (863) are slidably connected to one end of the sliding side base (81), and the two ends of the sliding side base (81) extend to both sides of the sliding side base (81). The electric push rod (862) is fixedly connected to the middle of the outer side of the sliding side base (81). The outer plate (863) is fixedly connected to one end of the slide rod (861) that extends to one side of the sliding side base (81). The housing (864), power supply (865), and electromagnetic block (866) are provided. The housing (864) is fixedly connected to one end of the slide rod (861) extending to the other side of the sliding base (81). The power supply (865) is fixedly connected to the back of the housing (864). The electromagnetic block (866) is fixedly connected to the front of the housing (864). The power supply (865) and the electromagnetic block (866) are electrically connected.
6. The shearer arm vibration early warning mechanism according to claim 1, characterized in that, Multiple sets of mounting lugs (10) are symmetrically fixedly connected to the top and bottom of the side slide plate (1). Each set of mounting lugs (10) has a mounting through hole (11) in the middle. The top mounting block (2) also has mounting through holes (11) on both sides.
7. The shearer arm vibration early warning mechanism according to claim 1, characterized in that, The number of the top mounting block (2) and the limiting slide bar (4) are both provided in two sets. Each set of the top mounting block (2) has two sets of upright blocks (3) above it, and each set of the limiting slide bar (4) is located between the two sets of upright blocks (3).