Scraper conveyor cable protection device

Abstract

The utility model discloses a scraper conveyor cable protection device, which is characterized in that a protection shell is connected to a ledge of a scraper conveyor, the protection shell is divided into an upper shell and a lower shell, the lower shell is used for accommodating a spray pipeline and a compressed air pipeline, the upper shell is used for accommodating power cables of a coal mining machine and the tail of a front scraper conveyor and the tail of a rear scraper conveyor, and meanwhile, the protection device is provided with a buffer device. When slag stones fall on the top plate, the slag stones firstly fall on the top plate of the protective shell, the top plate transmits downward pressure to the buffer spring through the sliding block, impact force is relieved, the top plate resets under the action of the buffer spring, a channel for dragging a cable is further formed in the top end of the protective device, and the cable is safely contained in the protective shell and placed through the arc-shaped plate. When the cable needs to be dragged, the balls on the arc-shaped plate roll along the plate surface, friction force is reduced, the cable is prevented from being damaged, the arc-shaped plate is extruded through the sliding rod of the telescopic rod, the reset spring ensures that the arc-shaped plate can be reset in time after the cable is dragged, and the cable is clamped at a proper position.

Description

Technical Field

[0001] This utility model relates to the field of conveyor equipment technology, specifically to a cable protection device for scraper conveyors. Background Technology

[0002] The Wuyang Coal Mine's 80 mining area uses an SGZ900 / 1400 scraper conveyor. The power cables for the coal mining machine, the front and rear scraper conveyor tail motors, the spray pipes, and the compressed air pipes are all exposed. The coal in this mining area is soft, and the roof is fractured. During the support relocation process, there is severe coal leakage between the hydraulic support beams. If the coal slag between the supports is not cleaned in time, there is a large amount of coal dust. Furthermore, the operator's visibility is limited during the support relocation process, making it difficult to control the range of motion. In addition, the exposed power cables, spray pipes, and compressed air pipes are easily squeezed or damaged during handling. Falling slag from the roof can also damage the cables, posing a risk of electrical leakage and severely threatening electrical safety. These hazards not only increase the risk of equipment failure but also force the mine to conduct frequent cable repairs, leading to continuous production stoppages and safety pressures, significantly limiting mining efficiency and the stability of safe production. Utility Model Content

[0003] The purpose of this utility model is to provide a cable protection device for scraper conveyors, so as to solve the problem that exposed power cables, spray pipes and compressed air pipes are easily squeezed or damaged during transportation, resulting in the risk of leakage after the cables are damaged.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a cable protection device for a scraper conveyor, comprising a trough side, a connecting frame, a protective shell, a buffer device, and a drag protection device. The connecting frame is connected to the trough side and is connected to the protective shell, the bottom of which is flush with the top of the scraper conveyor. The protective shell is composed of upper and lower rectangular troughs. A buffer device is connected to the upper shell. Vertically erected support columns are symmetrically connected to the front and rear ends of the top of the buffer device. The drag protection device is connected to the top of the two support columns.

[0005] The drag protection device includes a cylindrical outer shell, telescopic rods, an arc-shaped plate, and ball bearings. The cylindrical outer shell is a hollow shell with several mounting slots evenly spaced at an angle on its inner wall. Several telescopic rods are connected to the mounting slots. An arc-shaped plate is connected to the top of the rod cavity of each telescopic rod. Several ball sockets are formed at the end of the arc-shaped plate away from the telescopic rod, and ball bearings are embedded in the ball sockets. The ball bearings rotate and engage with the arc-shaped plate, and the ball bearings abut against the outer circumference of the drag cable.

[0006] The buffer device includes a top plate, a slider, and a buffer spring. Several sliding grooves are symmetrically opened on the left and right sides of the upper housing. A slider is provided in the sliding groove and slides in the upper housing. The top of the slider is connected to the top plate. A buffer spring is provided between the slider and the bottom of the sliding groove. One end of the buffer spring abuts against the bottom of the slider and the other end abuts against the bottom of the inner wall of the sliding groove.

[0007] Preferably, the upper housing is provided with a U-shaped clamp plate, and the coal mining machine and the tail power cables of the front and rear scraper conveyors are mounted inside the U-shaped clamp plate.

[0008] Preferably, the protective shell is connected to a protective plate at one end of the scraper conveyor, and the lower shell is provided with an external leakage hole for the compressed air pipe at one end of the conveyor. The protective plate is provided with a corresponding through hole for the external leakage hole.

[0009] Preferably, the telescopic rod includes a fixed shell, a return spring, and a sliding rod. The sliding rod is provided inside the fixed shell and slides within the fixed shell. A return spring is provided between the sliding rod and the inner wall of the fixed shell. One end of the return spring abuts against the bottom end of the sliding rod, and the other end is connected to the bottom end of the inner wall of the fixed shell. A limit ring is connected to the top end of the fixed shell, and a limit block is connected to the bottom end of the sliding rod. The limit block and the limit ring cooperate to prevent the sliding rod from sliding out.

[0010] Preferably, the two support columns form a slag cleaning trough.

[0011] Preferably, a spray pipe and a compressed air pipe are provided between the lower housings.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] A protective shell is connected to the trough of the scraper conveyor. The protective shell consists of two layers: the lower shell houses the spray pipes and compressed air pipes, while the upper shell houses the power cables of the coal mining machine and the tail sections of the front and rear scraper conveyors. The protective device is also equipped with a buffer system. When slag falls from the roof, it first lands on the top plate of the protective shell. The top plate transmits the downward pressure to the buffer spring via a slider, reducing the impact force and then returning to its original position under the action of the buffer spring. At the top of the protective device, there is also a channel for dragging cables. The cables are safely housed within the protective shell and placed via an arc-shaped plate. When the cables need to be dragged, the arc-shaped plate... The ball bearings on the plate roll along the plate surface, ensuring the cable is dragged stably while reducing friction and preventing cable damage. The arc-shaped plate is squeezed by the sliding rod of the telescopic rod, and the return spring ensures that the arc-shaped plate can be reset in time after the cable is dragged, clamping the cable in the appropriate position. This device greatly reduces the risk of damage caused by cable and pipeline squeezing during the frame shifting process by enclosed management and layered arrangement of the coal mining machine power cable, the front and rear scraper conveyor tail motor power cables, spray pipes and compressed air pipes, thereby improving safety, reducing the probability of accidents, and effectively ensuring the smooth progress of the mining operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the structure in which the top plate, slider, and buffer spring cooperate with each other in this utility model.

[0016] Figure 3 This is a schematic diagram of the drag protection device of this utility model.

[0017] Figure 4 This is a schematic diagram of the telescopic rod explosion structure of this utility model.

[0018] In the diagram: 1. Connecting frame; 2. Lower shell; 3. Upper shell; 301. Top plate; 302. Slider; 303. Buffer spring; 304. U-shaped clamp plate; 4. Protective plate; 5. Support column; 6. Dragging protection device; 601. Cylindrical shell; 602. Telescopic rod; 603. Arc plate; 604. Ball bearing; 6021. Fixed shell; 6022. Return spring; 6023. Slide rod. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0022] 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.

[0023] Example 1: Please refer to Figure 1-4This utility model provides an embodiment of a cable protection device for a scraper conveyor, including a trough side, a connecting frame 1, a protective shell, a buffer device, and a drag protection device 6. The connecting frame 1 is connected to the trough side and connects the trough side and the protective shell, providing structural support for the entire protection system. Through the cooperation between the connecting frame 1 and the trough side, it can be ensured that the protective shell is flush with the top of the conveyor, ensuring that the spray pipe and compressed air pipe can be connected to the spray and dust suppression devices for operation, while simultaneously providing cable protection. The connecting frame 1 is connected to the protective shell, which consists of upper and lower shells: the lower shell 2 is used to accommodate the spray pipe and compressed air pipe, and the upper shell 3 is used to accommodate... The power cables of the coal mining machine and the tail sections of the front and rear scraper conveyors have their bottom ends flush with the top of the scraper conveyors. The protective shell is composed of upper and lower rectangular troughs. A buffer device is connected to the upper shell 3. The buffer device is used to absorb coal slag falling from the top of the roadway, buffering it and preventing direct damage to the protective shell, thus improving its service life and ensuring effective protection for the internal cables. Vertical support columns 5 are symmetrically connected to the top of the buffer device on both the front and rear sides. A drag protection device 6 is connected to the top of the two support columns 5. This part is a drag cable section, used to stably clamp the cable for protection. At the same time, it can stably drag the cable forward during dragging, protecting the outer wall of the cable.

[0024] The drag protection device 6 includes a cylindrical outer shell 601, a telescopic rod 602, an arc-shaped plate 603, and a ball bearing 604. The cylindrical outer shell 601 is a hollow shell that provides external protection. Its inner wall has several mounting slots evenly spaced at an angle, each slot containing a telescopic rod 602. When a cable is placed inside the cylindrical outer shell 601, the telescopic rod 602 compresses an internal return spring 6022, causing the arc-shaped plate 603 to open and allowing the cable to be inserted. The return spring 6022 then clamps the cable in place. The top of the telescopic rod 602's rod cavity is connected to an arc-shaped ball bearing 604. The curved plate 603 has its arc-shaped end face corresponding to the outer circumference of the cable to ensure effective cable clamping. At the end of the curved plate 603 away from the telescopic rod 602, several ball sockets are provided, each containing a ball bearing 604. The ball bearing 604 provides rolling support during cable dragging, allowing for effective and stable cable dragging and reducing friction. Through the rotational engagement of the ball bearing 604, cable dragging protection is achieved, ensuring the smooth operation of the conveying system and preventing damage to the cable's outer wall. The ball bearing 604 rotates within the curved plate 603, contacting the outer circumference of the dragged cable.

[0025] The upper housing 3 is equipped with a U-shaped clamp plate 304, which houses the power cables of the coal mining machine and the front and rear scraper conveyors. The U-shaped clamp plate 304 secures the power cables of the coal mining machine and scraper conveyor tail, preventing them from becoming loose or damaged. Separating the cables prevents wear or damage to the rubber layer due to machine vibration, friction, or external forces. Especially in equipment such as coal mining machines and scraper conveyors, where the working environment is complex and cables often need to withstand significant mechanical impact and compression, the U-shaped clamp plate 304 effectively reduces this risk.

[0026] A protective plate 4 is connected to one end of the protective shell corresponding to the scraper conveyor. The protective plate 4 is used to prevent the material on the scraper conveyor from colliding with or directly contacting external objects, thus providing safety protection. The lower shell 2 has an external leakage hole for the compressed air pipe at one end corresponding to the conveyor. The protective plate 4 has corresponding through holes for connecting cables to the spray pipe and the compressed air pipe, allowing connection to the spray and dust suppression devices for operation.

[0027] The telescopic rod 602 includes a fixed housing 6021, a return spring 6022, and a sliding rod 6023. The sliding rod 6023 is housed within the fixed housing 6021. The top end of the sliding rod 6023 is connected to an arc-shaped plate 603 for clamping the cable of the towing section. The sliding rod 6023 is slidably fitted into the fixed housing 6021. The return spring 6022 is located between the sliding rod 6023 and the inner wall of the fixed housing 6021. Through the action of the return spring 6022, the sliding rod 6023 can adjust according to the actual working conditions. When the device needs to automatically return to its initial state, one end of the return spring 6022 abuts against the bottom end of the slide rod 6023, and the other end is connected to the bottom end of the inner wall of the fixed housing 6021. A limit ring is connected to the top of the fixed housing 6021, and a limit block is connected to the bottom end of the slide rod 6023. The limit block and the limit ring work together to prevent the slide rod 6023 from slipping out. The design of the limit ring and the limit block effectively prevents the slide rod 6023 from falling off during operation, enhancing the safety and reliability of the device.

[0028] The space between the two support columns 5 forms a slag cleaning trough, which is used to clean up slag falling from the top, preventing dust accumulation from affecting equipment performance, reducing the load on the top plate 301, and maintaining the system in good condition.

[0029] A spray pipe and a compressed air pipe are provided between the lower housing 2.

[0030] In use, first place the drag-section cable in the drag protection device 6, press down the arc plate 603, press down the slide bar 6023 to squeeze the return spring 6022, and then insert the drag-section cable. The return spring 6022 clamps the cable, and during dragging, the ball bearings 604 roll, reducing friction and steadily dragging the cable forward, protecting the cable's outer wall.

[0031] At the same time, the spray pipe and compressed air pipe are placed in the lower shell 2, and the power cables of the coal mining machine and the tail of the front and rear scraper conveyors are placed in the U-shaped clamp plate 304 of the upper shell 3 for protection.

[0032] Example 2: Please refer to Figure 1-2 Based on Example 1, it also has the following structure:

[0033] The buffer device includes a top plate 301, a slider 302, and a buffer spring 303. Several sliding grooves are symmetrically opened on the left and right sides of the upper shell 3. The slider 302 is installed in the sliding groove of the upper shell 3 and can slide in the sliding groove. It works in conjunction with the buffer spring 303. It plays a buffering and guiding role under the action of external force. The sliding of the slider 302 can effectively disperse and reduce the external impact or vibration. The slider 302 is slidably fitted to the upper shell 3. The top of the slider 302 is connected to the top plate 301. The top plate 301 is located at the top of the device and mainly bears the coal blocks falling from the top. The buffer spring 303 is installed between the slider 302 and the bottom of the sliding groove. The buffer spring 303 is a key component in the buffer device and plays a role in shock absorption and energy absorption. It is located between the slider 302 and the bottom of the groove to absorb external impact. When an external impact force is applied to the device, the buffer spring 303 will be compressed and gradually release energy, thereby slowing down the transmission of impact force. One end of the buffer spring 303 abuts against the bottom of the slider 302, and the other end abuts against the bottom of the inner wall of the groove.

[0034] The above description is merely an embodiment of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A cable protection device for a scraper conveyor, characterized in that: It includes a trough side, a connecting frame (1), a protective shell, a buffer device, and a drag protection device (6). The connecting frame (1) is connected to the trough side and the protective shell is connected to the connecting frame (1). Its bottom end is flush with the top end of the scraper conveyor. The protective shell is composed of upper and lower rectangular troughs. The buffer device is connected to the upper shell (3). The top end of the buffer device is symmetrically connected to the front and rear ends of ... drag protection device (6) is connected to the top end of the front and rear ends of the two support columns (5). The drag protection device (6) includes a cylindrical shell (601), a telescopic rod (602), an arc-shaped plate (603), and ball bearings (604). The cylindrical shell (601) is a hollow shell with several mounting grooves evenly spaced at an angle on its inner wall. Several telescopic rods (602) are connected to the mounting grooves respectively. The top of the rod cavity of the telescopic rod (602) is connected to the arc-shaped plate (603). Several ball sockets are provided at the end of the arc-shaped plate (603) away from the telescopic rod (602). Ball bearings (604) are embedded in the ball sockets and rotate in conjunction with the arc-shaped plate (603). The ball bearings (604) abut against the outer circumference of the drag cable. The buffer device includes a top plate (301), a slider (302), and a buffer spring (303). Several sliding grooves are symmetrically opened on the left and right sides of the upper housing (3). A slider (302) is provided in the sliding groove. The slider (302) is slidably fitted to the upper housing (3). The top plate (301) is connected to the top of the slider (302). A buffer spring (303) is provided between the slider (302) and the bottom of the sliding groove. One end of the buffer spring (303) abuts against the bottom of the slider (302), and the other end abuts against the bottom of the inner wall of the sliding groove.

2. The cable protection device for scraper conveyors according to claim 1, characterized in that: The upper housing (3) is provided with a U-shaped clamp plate (304), and the coal mining machine and the tail power cables of the front and rear scraper conveyors are installed inside the U-shaped clamp plate (304).

3. The cable protection device for scraper conveyors according to claim 1, characterized in that: The protective shell is connected to a protective plate (4) at one end of the scraper conveyor. The lower shell (2) is provided with an external leakage hole for the compressed air pipe at one end of the conveyor. The protective plate (4) is provided with a corresponding through hole for the external leakage hole.

4. The cable protection device for scraper conveyors according to claim 1, characterized in that: The telescopic rod (602) includes a fixed shell (6021), a return spring (6022), and a slide rod (6023). The slide rod (6023) is provided inside the fixed shell (6021) and slides in cooperation with the fixed shell (6021). The return spring (6022) is provided between the slide rod (6023) and the inner wall of the fixed shell (6021). One end of the return spring (6022) abuts against the bottom end of the slide rod (6023) and the other end is connected to the bottom end of the inner wall of the fixed shell (6021). A limit ring is connected to the top of the fixed shell (6021), and a limit block is connected to the bottom end of the slide rod (6023). The limit block and the limit ring are used in cooperation to prevent the slide rod (6023) from sliding out.

5. The cable protection device for scraper conveyors according to claim 1, characterized in that: The two support columns (5) form a slag cleaning trough.

6. The cable protection device for scraper conveyors according to claim 3, characterized in that: A spray pipe and a compressed air pipe are provided between the lower housing (2).

Images