A coal mine belt conveyor emergency stop pull wire fixing device

Abstract

The present disclosure relates to the field of coal mine cable support assembly, and one embodiment of the present disclosure provides a coal mine rubber belt conveyor emergency stop pull wire fixing device, which comprises a sleeve frame and a side frame, the side frame is arranged outside the sleeve frame, a fixed connection assembly is arranged between the sleeve frame and the side frame, an anti-falling support assembly is arranged in the side frame, the anti-falling support assembly comprises a shaft sleeve, the shaft sleeve is arranged at the lower end of the side surface of the sleeve frame, a rotating shaft is horizontally connected in the shaft sleeve through a bearing, a support wheel is sleeved and connected at one end of the rotating shaft, a slot is formed at one end of the rotating shaft, and the side frame has an overall L-shaped structure. Through the above technical scheme, the technical problem that the contact parts of the support and the pull wire are mostly rigid metal structures without a buffer protection assembly in the prior art, and the continuous friction between the two caused by the vibration of the conveyor during operation accelerates the damage of the outer sheath of the pull wire and the fracture of the internal steel wire is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of coal mine cable support components, and more specifically, to a coal mine belt conveyor emergency stop cable fixing device. Background Technology

[0002] Belt conveyors in coal mines are core equipment for raw coal transportation. Emergency stop cables, as a critical safety device ensuring emergency shutdowns, directly impact the lives of workers and the safety of the equipment. Currently, emergency stop cables are often supported and fixed using tripods or simple steel supports. These methods lack specific protective designs for the cables, leading to significant wear and tear issues.

[0003] Traditional fixing methods have significant drawbacks: the contact points between the support frame and the guy wire are mostly rigid metal structures without buffering or protective components. Vibration during conveyor operation causes continuous friction between the two, accelerating damage to the outer sheath of the guy wire and breakage of the internal steel wires. Once the support frame is installed and fixed in place, it cannot be fine-tuned according to the tension of the guy wire and the operating status. Excessive tension or slackness will exacerbate friction and wear. Some simple support frames lack stability and are prone to uneven stress on the guy wire due to tunnel settlement and equipment vibration, further amplifying the wear effect. Wear on the guy wire can easily lead to the failure or delayed response of emergency stop signals, making it impossible to stop the machine quickly in an emergency, posing a significant safety hazard.

[0004] Therefore, the development of an emergency stop cable fixing device for belt conveyors in coal mines has become an urgent need to address the pain point of wear and tear. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide an emergency stop cable fixing device for a coal mine belt conveyor, which solves the technical problem that in the prior art, the contact parts between the support and the cable are mostly rigid metal structures without buffer protection components, and the vibration of the conveyor operation will cause continuous friction between the two, accelerating the damage of the outer sheath of the cable and the breakage of the internal steel wire.

[0006] According to one aspect, at least one embodiment of this disclosure provides an emergency stop cable fixing device for a coal mine belt conveyor, comprising: A frame and a side frame, wherein the side frame is disposed on the outside of the frame; A fixed connection assembly is disposed between the sleeve and the side frame; Anti-detachment support assembly, wherein the anti-detachment support assembly is disposed in the side frame; The anti-detachment support assembly includes a bushing, which is disposed at the lower end of the side surface of the frame. A rotating shaft is horizontally connected inside the bushing via a bearing. A support wheel is fitted onto one end of the rotating shaft, and a slot is provided at one end of the rotating shaft. The side frame is generally L-shaped.

[0007] As a further technical solution, an anti-detachment clamping block is provided on the inner side of the lower end of the side frame. The anti-detachment clamping block is inserted into the slot. A limit plate is provided on the rotating shaft. The limit plate and the anti-detachment clamping block limit the support wheel between them.

[0008] As a further technical solution, a top frame is provided on the top of the side frame, and a lower pressure frame is rotatably connected to both ends of the top frame through pins. A spring is connected between the upper end face of the lower pressure frame and the inner surface of the top frame. A lower pressure wheel is rotatably connected to one end of the lower pressure frame, and the support wheel and the lower pressure wheel are located in the same straight line position.

[0009] According to another aspect, in at least one embodiment of the present invention, the fixed connection assembly includes a pair of long rods, each of which is fixed to the side end face of the side frame. The side frame passes horizontally through the sleeve frame via the long rods, and one end of each long rod is connected to a fastening nut via a threaded connection.

[0010] As a further technical solution, a pre-connection groove is provided on the side surface of the side frame, and an internal threaded protrusion is provided on the side end face of the side frame. The internal threaded protrusion is inserted into the slot, and a bolt is inserted and connected to one side of the sleeve. One end of the bolt is screwed to the internal threaded protrusion.

[0011] As a further technical solution, both the support wheel and the pressure wheel have an arc-shaped concave structure on their surfaces.

[0012] As a further technical solution, the sleeve has an overall U-shaped structure and can be fitted onto the crossbeam of the belt conveyor.

[0013] As a further technical solution, the distance between the top of the support wheel and the top of the side frame is larger than the diameter of the emergency stop cable.

[0014] The beneficial effects of the embodiments disclosed herein are as follows: This disclosure addresses the issue of cable wear caused by traditional rigid contact through an anti-detachment support component. The arc-shaped concave structure on the surfaces of the support wheel and the lower pressure wheel precisely conforms to the emergency stop cable, increasing the contact area while preventing cable misalignment. The cooperation between the rotating shaft and the bearing allows the wheel to rotate synchronously with the cable, transforming traditional sliding friction into rolling friction, significantly reducing friction loss and delaying damage to the outer sheath and breakage of the internal steel wires. A spring provides elastic cushioning for the lower pressure wheel, adaptively adjusting the clamping force according to the cable tension to avoid additional wear caused by excessive tension or slack, while also offsetting the vibration and impact generated by the conveyor operation, reducing rigid collisions. The dual limiting of the anti-detachment clamping block and the limiting plate prevents the support wheel from axially shifting and falling off. The L-shaped side frame enhances the overall structural stability, preventing cable misalignment during operation and further reducing the risk of wear.

[0015] The entire component has been optimized in all aspects, from friction type and bonding method to limiting structure, effectively extending the service life of the emergency stop cable and ensuring its reliability during emergency shutdown. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0017] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure; Figure 2 This is an isometric drawing of the present disclosure; Figure 3 This is an isometric sectional view of the present disclosure; In the diagram: 1. Sleeve; 2. Side frame; 3. Anti-detachment support assembly; 3-1. Bushing; 3-2. Rotating shaft; 3-3. Support wheel; 3-4. Slot; 3-5. Anti-detachment clamping block; 3-6. Limiting plate; 3-7. Top frame; 3-8. Lower pressure frame; 3-9. Spring; 3-10. Lower pressure wheel; 4. Fixed connection assembly; 4-1. Long rod; 4-2. Fastening nut; 4-3. Pre-connection groove; 4-4. Internal threaded protrusion; 4-5. Bolt. Detailed Implementation

[0018] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0019] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0020] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0021] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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 disclosure.

[0023] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] like Figures 1-3 As shown, it illustrates an emergency stop cable fixing device for a coal mine belt conveyor according to an embodiment of the present disclosure, comprising: A sleeve 1 and a side frame 2, wherein the side frame 2 is disposed on the outside of the sleeve 1; A fixed connection component 4 is disposed between the sleeve 1 and the side frame 2; Anti-detachment support assembly 3, wherein the anti-detachment support assembly 3 is disposed in the side frame 2; The anti-detachment support assembly 3 includes a bushing 3-1, which is disposed at the lower end of the side surface of the sleeve 1. A rotating shaft 3-2 is horizontally connected to the bushing 3-1 via a bearing. A support wheel 3-3 is fitted onto one end of the rotating shaft 3-2, and a slot 3-4 is provided at one end of the rotating shaft 3-2. The side frame 2 is generally L-shaped, and an anti-detachment clamping block 3-5 is provided on the inner side of the lower end of the side frame 2. The anti-detachment clamping block 3-5 is inserted into the slot 3-4. The rotating shaft 3-2 is provided with... A limiting plate 3-6 is provided, which, together with the anti-detachment clamping block 3-5, limits the support wheel 3-3 between them. A top frame 3-7 is provided on the top of the side frame 2. Both ends of the top frame 3-7 are rotatably connected to a lower pressure frame 3-8 via pins. A spring 3-9 is connected between the upper end face of the lower pressure frame 3-8 and the inner surface of the top frame 3-7. A lower pressure wheel 3-10 is rotatably connected to one end of the lower pressure frame 3-8. The support wheel 3-3 and the lower pressure wheel 3-10 are located in the same straight line position.

[0025] In some examples, in order to achieve a stable connection between the sleeve 1 and the crossbeam of the belt conveyor and to solve the problems of easy loosening and poor adaptability of traditional fixing devices, a fixing connection component 4 was designed. This component includes the sleeve 1, which is welded from high-strength channel steel and has a hot-dip galvanized anti-corrosion treatment to adapt to the humid and dusty environment of coal mines. The side frame 2 is forged from L-shaped steel plate and fits against the outside of the sleeve 1. The two together form a basic frame, providing a rigid installation benchmark for subsequent fixing and support components, and avoiding structural displacement caused by vibration during conveyor operation.

[0026] A pair of long rods 4-1 on the side end face of side frame 2 are welded and fixed to side frame 2, and are distributed in parallel. The surface of the long rods 4-1 is threaded, and after horizontally penetrating the pre-set through hole of sleeve 1, the end is locked by tightening the fastening nut 4-2 to form a preliminary fixing structure. The pre-connecting groove 4-3 on the side surface of side frame 2 is precisely aligned with the positioning groove on the inner side of sleeve 1. The internal threaded protrusion 4-4 on the side end face of side frame 2 is clearance-fitted with the pre-connecting groove 4-3. After insertion, it fits against the inner side of sleeve 3-7. The bolt 4-5 on one side of the inner side of sleeve 3-7 passes through the pre-set hole of sleeve 1 and is screwed to the internal threaded protrusion 4-4 to form a secondary fixing structure. The double fixing design greatly improves the rigidity of the connection between side frame 2 and sleeve 1. The parallel distribution of long rods 4-1 ensures balanced force. Both the fastening nut 4-2 and the bolt 4-5 adopt an anti-loosening structure, and the spring 3-9 washer prevents loosening caused by coal mine vibration.

[0027] This component, through the length adjustment of the long rod 4-1 and the positioning of the pre-connection groove 4-3, can adapt to the installation requirements of crossbeams of different specifications. During installation, the long rod 4-1 is first passed through the pre-reserved hole between the sleeve 1 and the crossbeam, and the fastening nut 4-2 is tightened. Then, the internal threaded protrusion 4-4 is locked by the bolt 4-5 to achieve a stable connection between the sleeve 1 and the crossbeam, providing a reliable foundation for the anti-detachment support component 3.

[0028] like Figures 1-3 As shown in the figure, the fixed connection assembly 4 in this embodiment includes a pair of long rods 4-1, both of which are fixed to the side end face of the side frame 2. The side frame 2 passes horizontally through the sleeve 1 through the long rods 4-1. One end of the long rod 4-1 is connected to a fastening nut 4-2 by a threaded connection. The side surface of the side frame 2 is provided with a pre-connection groove 4-3. The side end face of the side frame 2 is provided with an internal threaded protrusion 4-4. The internal threaded protrusion 4-4 is inserted into the slot 3-4. A bolt 4-5 is inserted and connected to one side of the sleeve 1. One end of the bolt 4-5 is screwed to the internal threaded protrusion 4-4.

[0029] In some examples, in order to achieve stable movement and anti-detachment protection of the emergency stop cable and solve the problems of severe wear and easy cable detachment in traditional support structures, an anti-detachment support component 3 was designed. This component includes a bushing 3-1 fixed by welding at the lower end of the side surface of the sleeve 1, keeping the axis horizontal, and a deep groove ball bearing installed inside. The inner ring of the bearing is interference-fitted with the rotating shaft 3-2 to reduce rotational friction and provide a smooth reference for the rotation of the support wheel 3-3.

[0030] One end of the rotating shaft 3-2 is connected to the support wheel 3-3. The wheel surface is machined with an arc-shaped groove to fit the shape of the emergency stop cable and reduce contact wear. The slot 3-4 at one end of the rotating shaft 3-2 is clearance-fitted with the anti-detachment clamping block 3-5 on the inner side of the lower end of the side frame 2. After insertion, it restricts the axial movement of the rotating shaft 3-2. The limiting plate 3-6 on the rotating shaft 3-2 is welded and fixed to the shaft body, forming a bidirectional clamp with the anti-detachment clamping block 3-5, limiting the support wheel 3-3 in the middle and preventing the cable from falling off due to wheel displacement.

[0031] The sleeve 3-7 at the top of the side frame 2 is welded and fixed to the side frame 2. The lower pressure frame 3-8 at both ends inside is rotatably connected by pins. The spring 3-9 on the upper end face is welded and fixed to the inner surface of the sleeve 3-7. The spring 3-9 is always in a compressed state, providing continuous elastic pressure to the lower pressure frame 3-8. The lower pressure wheel 3-10 at one end of the lower pressure frame 3-8 is rotatably connected by a bearing. The groove of the wheel body is aligned vertically with the groove of the support wheel 3-3, forming a clamping and guiding structure for the pull cable. The emergency stop pull cable passes through the groove between the support wheel 3-3 and the lower pressure wheel 3-10. When moving, it drives the two wheels to rotate synchronously. The lower pressure wheel 3-10 driven by the spring 3-9 always presses the pull cable tightly. With the support and anti-detachment structure of the support wheel 3-3, the pull cable can move stably and is not easy to fall off, which greatly reduces wear and tear and is suitable for long-term use in complex working conditions in coal mines.

[0032] For example, such as Figure 1 As shown, the surfaces of the support wheel 3-3 and the pressure wheel 3-10 are both arc-shaped concave structures.

[0033] In some examples, the concave arc-shaped structures on the surfaces of the support wheel 3-3 and the pressure wheel 3-10 are precision ground to match the outer diameter of the emergency stop cable. The wheel body is made of wear-resistant alloy steel with a hard chrome plating to enhance wear resistance. The concave structure ensures that the cable remains in contact with the center of the wheel body, preventing it from shifting off-center and rubbing against the side frame 2 during movement. Combined with the clamping force of the spring 3-9, this further reduces cable wear and prevents it from falling off.

[0034] For example, such as Figure 1 As shown, the frame 1 has an overall U-shaped structure and can be fitted onto the crossbeam of the belt conveyor.

[0035] In some examples, the U-shaped sleeve 1 is made of high-strength channel steel bent into shape, and the inner wall is polished to reduce installation friction. The opening width of the sleeve 1 is adapted to the thickness of the conveyor beam, and the inner side fits tightly against the beam after installation. The long rod 4-1 of the fixed connection component 4 passes through and is locked with bolts 4-5, so that the sleeve 1 and the beam form a rigid connection, which has strong vibration resistance and is suitable for coal mine working conditions.

[0036] For example, such as Figure 3 As shown, the distance between the top of the support wheel 3-3 and the top of the side frame 2 is larger than the diameter of the emergency stop cable.

[0037] In some examples, the spacing between the top of the support wheel 3-3 and the top of the side frame 2, combined with the elastic clamping structure of the pressure wheel 3-10, creates a suitable space. During installation, the cable can be easily placed into the support wheel 3-3, and the spring 3-9 drives the pressure wheel 3-10 to automatically clamp the cable. The spacing is slightly larger than the cable diameter, which avoids cable jamming and prevents the cable from falling upwards through the limit setting of the pressure wheel 3-10.

[0038] In practical use: The U-shaped sleeve 1 is fitted onto the crossbeam of the belt conveyor, ensuring a stable installation. The long rod 4-1 of the fixing connection assembly 4 horizontally penetrates the sleeve 1. The side frame 2 is initially fixed by tightening the fastening nut 4-2 at one end. Then, the internally threaded protrusion 4-4 on the side end face of the side frame 2 is inserted into the pre-connection groove 4-3. Bolts 4-5 are inserted and screwed onto the internally threaded protrusion 4-4 to achieve double fixation between the side frame 2 and the sleeve 1. The rotating shaft 3-2 is horizontally installed in the bushing 3-1 at the lower end of the side surface of the sleeve 1 via a bearing. The support wheel 3-3 is fitted onto the rotating shaft 3-2. The anti-detachment clamping block 3-5 is inserted into the slot 3-4 at one end of the rotating shaft 3-2. The limiting plate 3-6 on the rotating shaft 3-2 limits and fixes the support wheel 3-3, preventing it from slipping off. Its axial movement; inside the top frame 3-7 at the top of the side frame 2, the lower pressure frame 3-8 is rotatably connected by a pin shaft. A spring 3-9 is connected between the upper end face of the lower pressure frame 3-8 and the inner surface of the top frame 3-7. The lower pressure wheel 3-10 is rotatably connected to one end of the lower pull frame, ensuring that the support wheel 3-3 and the lower pressure wheel 3-10 are in the same straight line; the emergency stop pull cable is passed between the support wheel 3-3 and the lower pressure wheel 3-10. The elastic force of the spring 3-9 pushes the lower pressure wheel 3-10 to press the pull cable, and the arc-shaped concave structure fits the surface of the pull cable; check the connection of all components to ensure that the pull cable can move smoothly between the support wheel 3-3 and the lower pressure wheel 3-10. When the conveyor is running, the support wheel 3-3 and the lower pressure wheel 3-10 rotate synchronously with the pull cable to reduce relative friction, and the installation and commissioning of the device are completed.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A device for fixing the emergency stop cable of a belt conveyor in a coal mine, characterized in that, include: A sleeve (1) and a side frame (2), wherein the side frame (2) is disposed on the outside of the sleeve (1); A fixed connection assembly (4) is disposed between the sleeve (1) and the side frame (2); Anti-detachment support assembly (3), wherein the anti-detachment support assembly (3) is disposed in the side frame (2); The anti-detachment support assembly (3) includes a bushing (3-1), which is located at the lower end of the side surface of the sleeve (1). A rotating shaft (3-2) is horizontally connected inside the bushing (3-1) via a bearing. A support wheel (3-3) is fitted onto one end of the rotating shaft (3-2), and a slot (3-4) is provided at one end of the rotating shaft (3-2). The side frame (2) has an overall L-shaped structure.

2. The emergency stop cable fixing device for a coal mine belt conveyor according to claim 1, characterized in that, An anti-detachment clamping block (3-5) is provided on the inner side of the lower end of the side frame (2). The anti-detachment clamping block (3-5) is inserted into the slot (3-4). A limiting plate (3-6) is provided on the rotating shaft (3-2). The limiting plate (3-6) and the anti-detachment clamping block (3-5) limit the support wheel (3-3) between them.

3. The emergency stop cable fixing device for a coal mine belt conveyor according to claim 2, characterized in that, The side frame (2) is provided with a top frame (3-7) at the top. Both ends of the top frame (3-7) are rotatably connected to a lower pressure frame (3-8) via pins. A spring (3-9) is connected between the upper end face of the lower pressure frame (3-8) and the inner surface of the top frame (3-7). A lower pressure wheel (3-10) is rotatably connected to one end of the lower pressure frame (3-8). The support wheel (3-3) and the lower pressure wheel (3-10) are located in the same straight line position.

4. The emergency stop cable fixing device for a coal mine belt conveyor according to claim 1, characterized in that, The fixed connection assembly (4) includes a pair of long rods (4-1), both of which are fixed to the side end face of the side frame (2). The side frame (2) passes horizontally through the sleeve (1) via the long rods (4-1), and one end of the long rod (4-1) is connected to a fastening nut (4-2) by a threaded connection.

5. The emergency stop cable fixing device for a coal mine belt conveyor according to claim 4, characterized in that, The side frame (2) has a pre-connection groove (4-3) on its side surface. The side end face of the side frame (2) is provided with an internal threaded protrusion (4-4). The internal threaded protrusion (4-4) is inserted into the slot (3-4). A bolt (4-5) is inserted and connected to one side of the sleeve (1). One end of the bolt (4-5) is screwed to the internal threaded protrusion (4-4).

6. The emergency stop cable fixing device for a coal mine belt conveyor according to claim 3, characterized in that, The surfaces of both the support wheel (3-3) and the pressure wheel (3-10) are arc-shaped concave structures.

7. The emergency stop cable fixing device for a coal mine belt conveyor according to claim 1, characterized in that, The frame (1) has an overall U-shaped structure and can be fitted onto the crossbeam of the belt conveyor.

8. The emergency stop cable fixing device for a coal mine belt conveyor according to claim 1, characterized in that, The distance between the top of the support wheel (3-3) and the top of the side frame (2) is greater than the diameter of the emergency stop cable.

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