Novel telescopic protection device for mining belt self-moving tail

Abstract

The utility model discloses a novel telescopic protection device for a mining belt self-moving tail, and belongs to the technical field of mining belt conveying equipment. The cable rack is driven by the oil cylinder to move along the belt self-moving machine tail, telescopic overlapping of the guardrails is achieved through the guiding device, and the protection range can be dynamically adjusted along with changes of coal unloading points of the reversed loader. Detachable positioning pins are arranged on wheel carriers at the bottom of the cable rack, so that quick fixing is facilitated; and the top cable hook accommodates the cable in order. The magnet frame is hinged through a pin shaft, a magnet (a permanent magnet or an electromagnet) at the bottom of the magnet frame can adsorb metal foreign matters in coal flow, and the equipment stability and the maintenance convenience are improved by matching with a guide pulley lubricated by an oil injection hole of the guide device. The protection device solves the problems that a traditional protection device is insufficient in dynamic protection, a belt is prone to being damaged by metal, operation and maintenance are tedious and the like, integration of full-stroke protection, foreign matter interception and cable management is achieved, safety and efficiency of coal mine belt conveying are remarkably improved, and the protection device is suitable for protection scenes of an underground belt self-moving tail.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of mine belt conveying equipment, in particular to a novel mine belt self-moving tailstock telescopic protection device. BACKGROUND

[0002] In underground coal mine production, the belt self-moving tailstock as the key equipment of the transfer conveying system, its safety and reliability directly affect the efficient operation of the mine. At present, the traditional mine belt self-moving tailstock mainly has the following technical problems in practical application:

[0003] When the transfer machine unloads coal to the belt self-moving tailstock, the coal blocks are easy to splash due to impact force, which may cause harm to nearby operators. The existing protection means mainly relies on fixed fences or manual warning, which needs to occupy a large amount of underground space, and cannot dynamically adjust the protection range with the unloading point, resulting in the coexistence of the problems of blind area protection and low space utilization. For example, when the transfer machine head moves along the belt self-moving tailstock to unload coal, the fixed fence cannot follow synchronously, and needs to be repeatedly disassembled and assembled, which seriously affects the production efficiency.

[0004] The chain, bolt and other metal parts of the front scraper, transfer machine and other equipment may fall off due to long-term operation and wear, and enter the belt conveying system with the coal flow. These metal foreign matters are easy to cut the belt, causing shutdown maintenance and even safety accidents. The traditional protection device lacks the active interception ability of metal foreign matters, and only relies on manual inspection, which is difficult to eliminate hidden dangers in real time.

[0005] The protection structure of the existing belt self-moving tailstock is mostly fixed or rigidly connected. When the equipment position needs to be adjusted, manual carrying or complex machinery is needed, which is complicated and time-consuming. In addition, the lubrication and maintenance of the transmission parts (such as pulleys and guide rails) usually need to disassemble the whole structure, which is limited by the underground working environment, resulting in low maintenance efficiency and easy equipment failure due to part wear.

[0006] The cable of the underground equipment is usually dragged with the movement of the protection device, and lacks an orderly storage structure, which is easy to cause cable entanglement, wear and even leakage risk, affecting the stability of the equipment and possibly causing electrical accidents.

[0007] Although there are some protection improvement schemes in the prior art, most of them are single-function designs, such as only providing fixed protective fences or simple metal mesh interception, which cannot meet the comprehensive needs of dynamic protection, foreign matter interception, equipment movement and maintenance convenience. Therefore, it is urgent to develop a new type of protection device which can automatically stretch and retract with the unloading point, has metal foreign matter adsorption function, and is convenient to operate and maintain, in order to improve the safety and reliability of the coal mine belt conveying system.

[0008] How to effectively solve the above problems is an important problem that needs to be solved in the practical application of the mine belt self-moving tailstock. Utility model content

[0009] The utility model aims at solving the shortcoming of prior art, and proposes a novel mine belt self-moving tailstock telescopic protection device, which comprises:

[0010] The belt self-moving tailstock;

[0011] The oil cylinder is connected with the belt self-moving tailstock at one end and connected with the cable frame at the other end;

[0012] The cable frame is provided with a wheel frame at the bottom, the wheel frame can roll along the belt self-moving tailstock, and a guardrail is provided at the top;

[0013] The guide device is installed on the guardrail and used for connecting the guardrails and realizing telescopic overlap of the guardrails;

[0014] The magnet holder is hinged with the belt self-moving tailstock through a pin shaft, a guardrail is provided at the top, and a magnet is provided at the bottom.

[0015] Preferably, the wheel frame is provided with a detachable positioning pin for fixing the position of the cable frame on the belt self-moving tailstock.

[0016] Preferably, the top of the cable frame is provided with a cable hook for accommodating the cable.

[0017] Preferably, the guide device is provided with an oil injection hole at the front, and a guide pulley is contained in the inside, the oil injection hole is used for injecting lubricant into the guide pulley.

[0018] Preferably, the magnet is a permanent magnet or an electromagnet and is used for adsorbing metal foreign matters in the coal flow.

[0019] Compared with the prior art, the utility model has the beneficial effects that:

[0020] 1. The guardrail automatically telescopes with the coal discharging point, no additional power is needed, the protection area is covered in the whole stroke, and the safety risk caused by coal block splashing is reduced.

[0021] 2. The magnet holder intercepts metal foreign matters in real time, avoids belt abrasion and fracture, and prolongs the service life of the equipment.

[0022] 3. The wheel frame and the positioning pin are designed to realize quick movement and fixation of the cable frame, the oil injection hole simplifies the lubrication and maintenance process, and the efficiency of underground operation is improved.

[0023] 4. The telescopic guardrail structure is compact, reduces the space occupation of the traditional fixed protection, and is convenient for workers to operate and maintain the equipment. DRAWINGS

[0024] Fig. 1: overall structure schematic view (showing the connection relationship of the belt self-moving tailstock, the oil cylinder, the cable frame and the guardrail);

[0025] Figure 2: cable frame structure schematic diagram (showing wheel frame, positioning pin and cable hook);

[0026] Figure 3: partial enlarged view of the guide device (showing oil injection hole and guide pulley);

[0027] Figure 4: magnet frame structure schematic diagram (showing pin shaft and magnet).

[0028] In the figure: 1 - belt self-moving tail, 2 - oil cylinder, 3 - cable frame, 4 - guardrail, 5 - guide device, 6 - guardrail, 7 - magnet frame, 31 - wheel frame, 32 - positioning pin, 33 - cable hook, 51 - oil injection hole, 52 - pulley, 71 - pin shaft, 72 - magnet. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all.

[0030] Referring to the drawings, the present embodiment provides a new mine belt self-moving tail telescopic protection device, comprising:

[0031] belt self-moving tail 1;

[0032] oil cylinder 2, one end of which is connected with the belt self-moving tail 1, and the other end is connected with the cable frame 3;

[0033] cable frame 3, the bottom of which is installed with a wheel frame 31, and the wheel frame 31 can roll along the belt self-moving tail 1, and the top of which is installed with a guardrail 4;

[0034] guide device 5, installed on the guardrail 4, used for connecting the guardrail 4 and the guardrail 6, and realizing telescopic overlap of the guardrails;

[0035] magnet frame 7, hinged to the belt self-moving tail 1 through a pin shaft 71, and installed with a guardrail 6 at the top and a magnet 72 at the bottom.

[0036] Further, the wheel frame 31 is provided with a detachable positioning pin 32 for fixing the position of the cable frame 3 on the belt self-moving tail 1.

[0037] Further, the top of the cable frame 3 is provided with a cable hook 33 for accommodating the cable.

[0038] Further, the front of the guide device 5 is provided with an oil injection hole 51, and the inside contains a guide pulley 52, and the oil injection hole 51 is used for injecting lubricant into the guide pulley 52.

[0039] Further, the magnet 72 is a permanent magnet or an electromagnet for adsorbing metal foreign matters in the coal flow.

[0040] The novel mine belt self-moving tailpiece telescopic protection device provided by the above embodiment mainly comprises the following core components:

[0041] ① Belt self-moving tailpiece: as a basic support structure, arranged along the underground coal mine transportation roadway, used for bearing the tail part of the belt conveyor.

[0042] ② Oil cylinder: one end is hinged to the belt self-moving tailpiece, and the other end is connected to the cable rack, which is driven by the hydraulic system to move the cable rack longitudinally along the belt self-moving tailpiece.

[0043] ③ Cable rack: the bottom is provided with a wheel frame, and the wheel frame is provided with rolling wheels, which can freely roll on the guide rail of the belt self-moving tailpiece;

[0044] A detachable positioning pin is arranged on the wheel frame, which is used to fix the cable rack at a specified position of the belt self-moving tailpiece;

[0045] A guardrail (initial section guardrail) is arranged at the top, and a cable hook is arranged, which is used to store the device cable and avoid entanglement.

[0046] ④ Guide device: installed on the top of the guardrail, including a guide pulley and an oil injection hole. The guide pulley is used to connect adjacent guardrails to realize telescopic overlapping of the guardrails; the oil injection hole can be periodically injected with lubricant to reduce the friction of the pulley.

[0047] ⑤ Magnet rack: hinged to the end of the belt self-moving tailpiece through a pin shaft, which can swing with the guardrail;

[0048] A terminal guardrail is arranged at the top, and a magnet (using a permanent magnet, which can adsorb ferromagnetic metal foreign matters) is fixed at the bottom.

[0049] The specific working process and operation scene of the device in the above embodiment are as follows:

[0050] Operation scene 1: protection when the left moving of the coal unloading point of the transfer machine

[0051] When the head of the transfer machine moves left to unload coal along the belt self-moving tailpiece, the hydraulic system controls the oil cylinder to contract, and pulls the cable rack to slide left through the wheel frame.

[0052] The initial section guardrail moves left with the cable rack, and through the action of the pulley of the guide device, the terminal guardrail is driven to move left synchronously, and the guardrail group gradually overlaps and contracts, concentrating the protection of the current coal unloading point area, and blocking the flying coal blocks.

[0053] The magnet rack moves to the vicinity of the coal unloading point with the terminal guardrail, and the magnet continuously adsorbs metal foreign matters (such as fallen bolts and chain fragments) in the coal flow, preventing them from entering the belt conveyor and damaging the belt.

[0054] Operation scenario 2: protection unfolding when the belt self-moving tail is moved forward as a whole

[0055] When the belt self-moving tail needs to be moved forward as a whole (such as following the working face advance), first pull out the detachable positioning pin on the wheel frame to release the fixed state of the cable frame.

[0056] The hydraulic system controls the oil cylinder to extend, pushing the cable frame to move to the right along the belt self-moving tail (reverse movement), and the guardrail group gradually unfolds under the action of the guide device, covering the new coal unloading area.

[0057] After moving into position, insert the positioning pin to fix the cable frame and ensure the stability of the protection device during subsequent coal unloading.

[0058] Operation scenario 3: equipment maintenance and lubrication

[0059] Periodically inject lubricating grease into the guide pulley through the oil injection hole of the guide device to reduce friction at the connection between the pulley and the guardrail, ensuring smooth extension of the guardrail.

[0060] The cable hook can quickly organize and fix the cable, avoiding wear and tear or electrical risk caused by cable dragging, and improving the safety of equipment operation.

[0061] Compared with the existing technology, the advantages of the above embodiments, operation scenarios and working principles are:

[0062] 1. The guardrail automatically extends with the movement of the coal unloading point, without the need for additional power, covering the protection area throughout the travel, reducing the safety risk caused by coal spatter.

[0063] 2. The magnet intercepts metal foreign matter in real time, avoiding belt wear and tear, and prolonging the service life of the equipment.

[0064] 3. The wheel frame and positioning pin design realizes quick movement and fixation of the cable frame, the oil injection hole simplifies the lubrication maintenance process, and improves the efficiency of underground operation.

[0065] 4. The telescopic guardrail structure is compact, reducing the space occupation of traditional fixed protection, and facilitating worker operation and equipment maintenance.

[0066] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the utility model, and it should be understood that the above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited thereto, any skilled person in the technical field can make equivalent replacement or change according to the technical solutions and utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered within the protection scope of the utility model.

[0067] In addition, in the description of the utility model, it is understood that the terms indicating the position or the positional relationship are based on the position or the positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, a particular orientation structure and operation, and therefore cannot be understood as a limitation on the utility model.

[0068] Furthermore, in the utility model, unless otherwise expressly specified and limited, the terms such as ''installation'', ''connection'', ''fixing'' and the like should be understood broadly, for example, can be fixedly connected, can also be detachably connected, or integrated; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

Claims

1. A novel tail-end telescopic protective device for a self-propelled mining conveyor belt, characterized in that, include: Self-moving tail section of belt conveyor (1); The cylinder (2) has one end connected to the tail of the belt self-moving machine (1) and the other end connected to the cable frame (3). Cable frame (3), with a wheel frame (31) installed at its bottom, the wheel frame (31) can roll along the belt to move the tail (1), and a guardrail (4) is installed on the top. The guide device (5) is installed on the guardrail (4) to connect the guardrail (4) and the guardrail (6) to realize the extension and overlap of the guardrail; The magnet holder (7) is hinged to the belt self-moving tail (1) by a pin (71), with a guardrail (6) installed on the top and a magnet (72) installed on the bottom.

2. The novel tail-end telescopic protective device for a self-propelled mining conveyor belt according to claim 1, characterized in that, The wheel frame (31) is provided with a detachable positioning pin (32) for fixing the position of the cable frame (3) on the tail of the belt self-moving machine (1).

3. The novel tail-end telescopic protective device for a self-propelled mining conveyor belt according to claim 1, characterized in that, The cable rack (3) is provided with a cable hook (33) on the top for storing cables.

4. A novel tail-end telescopic protective device for a self-propelled mining conveyor belt according to claim 1, characterized in that, The guide device (5) has an oil injection hole (51) on the front and contains a guide pulley (52) inside. The oil injection hole (51) is used to inject lubricant into the guide pulley (52).

5. A novel tail-end telescopic protective device for a self-propelled mining conveyor belt according to claim 1, characterized in that, The magnet (72) is a permanent magnet or an electromagnet used to adsorb metallic foreign objects in the coal flow.

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