Tail telescopic device of belt conveyor

Abstract

The utility model relates to the technical field of mine transportation equipment, in particular to a tail telescopic device of a belt conveyor, which comprises a driving unit, a guide mechanism, a movable tail and an intelligent control system, the driving unit adopts a double-acting hydraulic cylinder and hydraulic station closed oil way design, and the position of a piston rod is locked through a hydraulic lock; the guide mechanism comprises a first guide rail and a second guide rail, and the movable tail is mounted on the first guide rail, so that linear movement of the tail is ensured; a movable carrier roller frame is installed on the second guide rail, and the movable machine tail is connected with the movable carrier roller frame through a round-link chain. According to the device, the tensioning trolley and the carrier roller frame move along the first guide rail and the second guide rail respectively through independent guidance of the double guide rails, mutual interference is avoided, rigid impact is further reduced through flexible connection of the round-link chain, the device adapts to unevenness of the bottom face of a roadway, real-time linkage of the PLC and the tensioning trolley is achieved through intelligent cooperative control, and the response speed of the system is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to mine transportation equipment technical field, concretely is a kind of belt conveyor tail telescopic device that can realize double-station switching, it is applicable to coal mine downhole crossheading conveying system, especially applicable to the same warehouse mouth needs alternate unloading and receiving material working condition. BACKGROUND

[0002] At present, coal mine downhole belt conveyor tail telescopic device mostly uses hydraulic drive, however, the prior art has the following defects: the reliability of hydraulic system is insufficient: the risk of hydraulic cylinder oil leakage is high, and the maintenance cost is large; single function: cannot meet the needs of the same belt conveyor transporting two kinds of materials in different periods; poor adaptability of guide mechanism: traditional track structure is easy to be blocked in complex roadway working condition, affecting telescopic efficiency.

[0003] In addition, conventional tail device is easy to cause the wear of conveying belt under the impact of material, and lacks intelligent collaborative control, is difficult to link with tensioning car, affects overall transportation efficiency. INVENTION CONTENTS

[0004] The utility model provides a kind of belt conveyor tail telescopic device of double-station switching for the deficiency of prior art, solves the problem of single function, high maintenance cost in prior art, realizes the automatic telescoping of tail with material conveying efficiently and stably.

[0005] To solve the above problems, the technical scheme adopted by the utility model is: a belt conveyor tail telescopic device, including drive unit, guide mechanism, movable tail and intelligent control system, the drive unit adopts double-acting hydraulic cylinder and hydraulic station closed oil circuit design, and the position locking of piston rod is realized by hydraulic lock;The guide mechanism includes first guide rail and second guide rail, the movable tail is installed on the first guide rail, to ensure that the tail moves linearly;Movable carrier roller frame is installed on the second guide rail, the movable tail and movable carrier roller frame are connected by circular link, to realize the purpose that carrier roller frame moves synchronously with tail.

[0006] Preferably, the first guide rail is installed on the mounting base, and the mounting base is fixed to the ground.

[0007] Preferably, the movable machine includes a tensioning trolley, the bottom end of the tensioning trolley is provided with a wheel matched with the first guide rail, and the top end of the tensioning trolley is provided with a receiving hopper.

[0008] Preferably, a mounting bracket is installed on the outer side of the mounting base, the second guide rail is installed at the center position of the mounting bracket, a movable carrier roller base is installed on the second guide rail, and the carrier roller frame is installed on the movable carrier roller base.

[0009] Preferably, the mobile roller base comprises a mounting base and a rotating wheel mounted on the bottom of the mounting base and matched with the second guide rail, and the roller assembly is mounted on the roller frame.

[0010] Preferably, the mounting frame is mounted with a redirecting roller at one end away from the hydraulic cylinder through a bearing seat.

[0011] Preferably, the driving unit comprises a hydraulic station, the hydraulic station supplies oil to the hydraulic cylinder, the piston rod of the hydraulic cylinder extends or retracts, and the hydraulic cylinder pushes and pulls the tensioning trolley to move back and forth along the first track.

[0012] Preferably, the output end of the hydraulic cylinder is connected with the tensioning trolley via a pin shaft.

[0013] Preferably, the intelligent control system integrates displacement sensors and pressure sensors, and is linked with the tensioning trolley through an RS protocol, and dynamically adjusts the belt tension by driving the hydraulic cylinder.

[0014] The belt conveyor tail telescopic device has the following advantages compared with the prior art:

[0015] The device adopts double-guide rail independent guidance: the tensioning trolley and the roller frame move along the first and second guide rails respectively, avoiding mutual interference.

[0016] The device adopts circular ring chain flexible connection: reduces rigid impact and adapts to uneven roadway bottom surface.

[0017] The device adopts intelligent collaborative control: the PLC is linked with the tensioning trolley in real time, and the system response speed is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is a front view of the belt conveyor tail telescopic device.

[0019] Fig. 2 It is a top view of the belt conveyor tail telescopic device.

[0020] 1-hydraulic cylinder, 2-mobile roller base, 3-circular ring chain, 4-first track, 5-mounting base, 6-tensioning trolley, 7-redirecting roller, 8-mounting frame, 9-second track, 10-material receiving hopper, 11-roller frame, 12-pin shaft. DETAILED DESCRIPTION

[0021] The following is a specific embodiment of the present application, and the technical scheme of the present application will be further described in combination with the drawings, but the present application is not limited to these embodiments.

[0022] As shown in the drawings, Figs. 1-2 The present application provides a belt conveyor tail telescopic device, comprising a double-acting hydraulic cylinder driving system,

[0023] The system adopts double-acting hydraulic cylinders (stroke 3.0 m, single thrust 160 kN) integrated with hydraulic station design, and realizes piston rod position locking through closed oil circuit and hydraulic lock to avoid oil leakage risk.

[0024] The hydraulic cylinders are symmetrically installed behind the tail support, and the piston rod is hinged with the movable tail to ensure synchronous push-pull.

[0025] Double guide rail guiding and tensioning mechanism

[0026] First guide rail 4: installed on the ground fixed base 5, supporting the tensioning trolley 6 to move linearly along the track, and the top end receiving hopper 10 receives the material.

[0027] Second guide rail 9: fixed to the roadway wall through mounting bracket 8, carrying movable roller support 11 to ensure its synchronous movement with the tail.

[0028] Round-link chain linkage structure

[0029] The movable tail and the roller support 11 are connected by high-strength round-link chain 3, and the tensioning force is automatically compensated by the hydraulic tensioner to eliminate elastic vibration.

[0030] Intelligent control system

[0031] Configure PLC explosion-proof control box, integrate displacement sensor (resolution 0.1 mm) and pressure sensor, and real-time monitor hydraulic cylinder stroke and system pressure.

[0032] Link with tensioning car through RS485 protocol, dynamically adjust the conveyor belt tension to ensure stable operation.

[0033] Anti-wear and buffer design

[0034] The tensioning trolley is installed below the receiving section of the buffer bed, which uses polyurethane rubber to buffer the impact of the material;

[0035] The redirecting drum 7 is installed at the end of the mounting bracket 8 through the bearing seat, which optimizes the turning angle of the conveyor belt.

[0036] Innovation points

[0037] Double guide rail independent guiding: the tensioning trolley and the roller support move along the first and second guide rails respectively, avoiding mutual interference;

[0038] Round-link chain flexible connection: reduces rigid impact and adapts to uneven roadway floor;

[0039] Intelligent collaborative control: PLC and tensioning car real-time linkage to improve system response speed.

[0040] The device is used first to fix the first guide rail 4 on the ground installation base 5, and the second guide rail 9 is fixed on the roadway wall through the mounting frame 8, ensuring that the parallelism error is ≤±2mm / m; then the hydraulic station is fixed on the roadway wall, and the hydraulic cylinder 1 is connected through the high-pressure oil pipe, and the oil circuit is integrated with the hydraulic lock; the tension trolley 6 wheels cooperate with the first guide rail 4, and the material hopper 10 is bolted on the top end of the trolley; the movable roller support 11 is connected with the second guide rail 9 through the movable roller base 2 rotating wheel, and the circular link chain 3 is hinged at the tail and the roller support respectively; the displacement sensor and the pressure sensor are connected to the PLC control box.

[0041] When used, the local button or centralized control system sends instructions, the PLC controls the hydraulic station reversing valve, the hydraulic cylinder 1 extends and retracts to drive the tension trolley 6 to move along the first guide rail 4; the circular link chain 3 drives the movable roller support 11 to move along the second guide rail 9 synchronously, maintaining the tension of the conveyor belt; when discharging, the tension trolley extends to the coal bunker, and when receiving, it retracts to the roadway, and the switching time is ≤30s.

[0042] The movable roller support is the core component to realize the function of the tail stretching and retracting, realizing the movement following the tail, maintaining the tension and stability of the conveyor belt; and flexibly adjusting the distance between the rollers, adapting to the discharge / receiving mode; further reducing the maintenance cost, prolonging the service life of the equipment, and at the same time, the design makes the device still maintain high efficiency under complex working conditions, meeting the development trend of intelligentization and unmannedization in coal mine.

[0043] The specific embodiments described in the present application are only illustrative of the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or use similar ways instead, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A belt conveyor tail retraction device comprising a drive unit, a guide mechanism, a movable tail and an intelligent control system, characterised in that: The driving unit adopts double-acting hydraulic cylinder (1) and closed oil circuit design of hydraulic station, and realizes piston rod position locking through hydraulic lock; the guide mechanism includes first guide rail (4) and second guide rail (9), and the movable tail is installed on the first guide rail (4), thereby ensuring the linear movement of the tail; the movable roller frame (11) is installed on the second guide rail (9), the movable tail and the movable roller frame (11) are connected through the circular link chain (3), thereby realizing the purpose of synchronous movement of the roller frame (11) following the tail.

2. An endless conveyor tail retraction device as claimed in claim 1, characterised in that: The first guide rail (4) is installed on the mounting base (5), and the mounting base (5) is fixed on the ground.

3. An endless conveyor tail retraction device as claimed in claim 2, characterised in that: The movable machine includes a tensioning trolley (6), and the bottom end of the tensioning trolley (6) is provided with wheels matched with the first guide rail (4), and the top end of the tensioning trolley (6) is provided with a material receiving hopper (10).

4. An endless conveyor tail retraction device as claimed in claim 3, characterised in that: The mounting base (5) is provided with a mounting frame (8) on the outer side, the second guide rail (9) is installed at the center position of the mounting frame (8), and the movable roller base (2) is installed on the second guide rail (9).

5. An endless conveyor tail retraction device as claimed in claim 4, characterised in that: The movable roller base (2) includes a mounting seat and a rotating wheel matched with the second guide rail (9) installed at the bottom of the mounting seat, and the roller frame (11) is installed on the movable roller base (2).

6. An endless conveyor tail retraction device as claimed in claim 4, characterised in that: The mounting frame (8) is provided with a redirecting roller (7) at one end away from the hydraulic cylinder (1) through a bearing seat.

7. An endless conveyor tail retraction device as claimed in claim 1, characterised in that: The driving unit includes a hydraulic station, the hydraulic station supplies oil to the hydraulic cylinder (1), the piston rod of the hydraulic cylinder (1) is extended or retracted, and the hydraulic cylinder (1) pushes and pulls the tensioning trolley to move back and forth along the first guide rail (4).

8. An endless conveyor tail retraction device as claimed in claim 7, characterised in that: The output end of the hydraulic cylinder (1) is connected with the tensioning trolley (6) through a pin shaft (12).

9. An endless conveyor tail retraction device as claimed in claim 1, characterised in that: The intelligent control system integrates displacement sensors and pressure sensors, and is linked with the tensioning trolley through RS485 protocol, and dynamically adjusts the tension of the conveying belt through the driving hydraulic cylinder (1).

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