Protection device for scraper conveyor

Abstract

The utility model discloses a protection device for a scraper conveyer, which relates to the technical field of scraper conveyors, and comprises a shell, a conveyer body is arranged in the shell, a slide way is fixedly arranged on the inner wall of the shell, the conveyer body comprises a push plate, two ends of the push plate are rotatably connected with rollers, the rollers are arranged in the slide way, and the push plate is arranged on the slide way. A mounting frame is mounted on the inner wall of the shell, a sensor is mounted on the mounting frame, the output end of the sensor is arranged above the sliding way, a first motor is mounted at the top of the shell, the output end of the first motor is connected with a transmission assembly, and the output end of the motor is connected with the rotating shafts through the transmission assembly; brake assemblies are arranged at one ends of the rotating shafts. When abnormal conditions such as breakage of the chain occur, the change of the motion state of the roller is detected in time through the sensor, a signal is transmitted to the brake assembly, the rotating shaft is braked quickly, and the rotating shaft stops rotating.

Description

TECHNICAL FIELD

[0001] The utility model relates to scraper conveyor technical field, concretely is a kind of protective device for scraper conveyor. BACKGROUND

[0002] In the modern industrial production process, scraper conveyor is widely used in coal mine, chemical mine, metal mine and power plant and many other fields as a kind of key conveying equipment which is towed by scraper chain and conveys bulk material in groove. In straw board production line field, it also plays an indispensable role. After hammering, the segmental straw raw material needs to be continuously conveyed to subsequent processing link by scraper conveyor, and its stable operation is directly related to the production efficiency and quality of straw board.

[0003] However, in the actual application of straw board production line, scraper conveyor faces many severe challenges. Because the segmental straw raw material is easy to accumulate into a group, it forms blockage in the scraper, which causes the resistance borne by the chain to increase sharply. At the same time, the straw raw material produces external force such as impact, collision, pounding and pressure on the chain during the conveying process, combined with the wear during its own operation, the chain is prone to breakage. Once the chain is broken, if it cannot be handled in time and effectively, not only will it cause the interruption of straw raw material conveying and disrupt the entire straw board production process, but also it is easy to cause the broken chain to wind freely in the installation box of the scraper conveyor, thereby aggravating the damage degree of the equipment, greatly increasing the maintenance cost and downtime, and seriously affecting the economic benefit and production cycle of the straw board production line. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides a protective device for scraper conveyor, which solves the problem of chain breakage in the background art, which cannot be handled in time and effectively, not only causes the interruption of straw raw material conveying and affects the smooth progress of the entire production process, but also easily causes the broken chain to wind freely in the installation box of the scraper conveyor, thereby aggravating the damage degree of the equipment.

[0005] To achieve the above purpose, the utility model is implemented by the following technical scheme: a protective device for scraper conveyor, comprising a shell, a conveyor body is arranged inside the shell, a slide is fixedly arranged on the inner wall of the shell, a push plate is included in the conveyor body, rollers are rotatably connected to both ends of the push plate, the rollers are arranged in the slide, a connecting frame is installed on the inner wall of the shell, a sensor is installed on the connecting frame, the output end of the sensor is arranged above the slide, a first motor is installed on the top of the shell, a transmission assembly is connected to the output end of the first motor, the output end of the first motor is connected with a rotating shaft through the transmission assembly, a plurality of rotating shafts are arranged in the conveyor body, and a brake assembly is arranged at one end of the rotating shaft.

[0006] Preferably, the front and rear sides of the shell are fixedly provided with mounting racks, and rotating racks are mounted on the mounting racks.

[0007] Preferably, mounting plates are arranged on the mounting racks and correspond to the rotating racks.

[0008] Preferably, the brake assembly comprises a fixing frame mounted on the mounting plate, a bidirectional threaded rod rotatably mounted on the fixing frame, the bidirectional threaded rod being connected with the output end of the second motor, sliding rods arranged in parallel on the two sides of the bidirectional threaded rod and fixedly mounted on the fixing frame, and clamping plates symmetrically connected with the two ends of the bidirectional threaded rod.

[0009] Preferably, the top of the clamping plate is arc-shaped and adapted to the rotating shaft.

[0010] Preferably, a brake plate is mounted on the inner side of the top of the clamping plate.

[0011] The utility model provides a protection device for scraper conveyor.

[0012] (1), the utility model discloses when the chain breaks and other abnormal conditions, the change of the motion state of the roller is detected in time through the sensor, and the signal is transmitted to the brake assembly, and the rotating shaft is braked rapidly, so that the rotating shaft stops rotating, can make the scraper conveyor stop running as soon as possible when the chain breaks, avoids a series of chain reactions caused by the chain break to cause greater impact and damage to the conveying system.

[0013] (2), when the bidirectional threaded rod rotates, the clamping plate can move towards each other along the sliding rod under the limitation of the sliding rod. The top of the clamping plate is arc-shaped and adapted to the rotating shaft, and can better fit the surface of the rotating shaft. When braking is needed, the clamping plate can quickly clamp the rotating shaft, and effective braking of the rotating shaft is realized. DRAWINGS

[0014] Figure 1 It is the overall structure display drawing of the utility model;

[0015] Figure 2 It is the overall structure display drawing of the utility model; Figure 1 It is the internal structure display drawing of the shell of the utility model;

[0016] Figure 3 It is the enlarged schematic view of part A in the drawing 1 of the utility model;

[0017] Figure 4 It is the enlarged schematic view of part B of the utility model; Figure 2

[0018] ​In the figure, 1, shell; 11, slide; 12, connecting frame; 13, sensor;

[0019] 2, mounting frame; 21, mounting plate;

[0020] 3, first motor; 4, transmission assembly;

[0021] 5, conveyor body; 51, push plate; 52, roller;

[0022] 6, rotating frame; 7, rotating shaft;

[0023] 8, brake assembly; 81, fixed frame; 82, slide rod; 83, two-way threaded rod; 84, second motor; 85, clamping plate; 86, brake plate. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] Embodiment 1:

[0026] Please refer to Figures 1-4 The utility model provides a kind of protective device for scraper conveyor, including shell 1, conveyor body 5 is arranged in shell 1, slide 11 is fixedly arranged on the inner wall of shell 1, push plate 51 is included in conveyor body 5, both ends of push plate 51 are rotatably connected with roller 52, roller 52 is arranged in slide 11, connecting frame 12 is installed on the inner wall of shell 1, sensor 13 is installed on connecting frame 12, the output of sensor 13 is arranged above slide 11, first motor 3 is installed on the top of shell 1, transmission assembly 4 is connected to the output of first motor 3, the output of first motor 3 is connected with rotating shaft 7 by transmission assembly 4, a plurality of rotating shafts 7 are arranged in conveyor body 5, brake assembly 8 is arranged at one end of rotating shaft 7;

[0027] The front and rear sides of shell 1 are fixedly provided with mounting frame 2, rotating frame 6 is installed on mounting frame 2, rotating shaft 7 is rotatably installed in rotating frame 6;

[0028] Mounting plate 21 is arranged on mounting frame 2, and mounting plate 21 corresponds to rotating frame 6;

[0029] The brake assembly 8 comprises a fixing frame 81 mounted on the mounting plate 21, a bidirectional threaded rod 83 rotatably mounted on the fixing frame 81, the bidirectional threaded rod 83 being connected with the output end of the second motor 84, and two slide rods 82 being arranged in parallel on the two sides of the bidirectional threaded rod 83 and fixedly mounted on the fixing frame 81, and two symmetrical clamping plates 85 being screw-connected on the two ends of the bidirectional threaded rod 83;

[0030] The top of the clamping plate 85 is arc-shaped and matched with the rotating shaft 7.

[0031] The brake plate 86 is mounted on the inner side of the top of the clamping plate 85.

[0032] Specifically, the sensor 13 is a proximity sensor, which can sense the approach or departure of the rollers 52. When the scraper conveyor is normally operated, the rollers 52 at the two ends of the push plate 51 roll in the slide 11, and the sensor 13 can monitor the normal movement state of the rollers 52. When the chain breaks or other abnormal conditions occur, the movement state of the push plate 51 and the rollers 52 will change, and the sensor 13 can timely detect the change to send a signal.

[0033] When the sensor 13 detects an abnormal signal, the signal is transmitted to the brake assembly 8 and the first motor 3, and the first motor 3 stops driving, and at the same time, the second motor 84 in the brake assembly 8 starts to drive the bidirectional threaded rod 83 to rotate. Since the two ends of the bidirectional threaded rod 83 are screw-connected with the two symmetrical clamping plates 85, and the clamping plates 85 can only move along the direction of the slide rod 82 under the limitation of the slide rod 82, when the bidirectional threaded rod 83 rotates, the clamping plates 85 will move towards each other. The top of the clamping plate 85 is arc-shaped and matched with the rotating shaft 7, which can gradually clamp the rotating shaft 7, and the brake plate 86 on the inner side of the top of the clamping plate 85 can increase the friction between the rotating shaft 7, so that the rotating shaft 7 can be quickly stopped, thereby avoiding more damage caused by the continuous rotation of the rotating shaft 7 after the chain breaks.

[0034] The sensor 13 is installed above the slide 11 and can directly monitor the movement state of the rollers 52, so that the detection of abnormal conditions such as chain breakage is rapid and accurate, which provides a guarantee for timely protection measures.

[0035] The brake assembly 8 drives the bidirectional threaded rod 83 through the second motor 84, which can quickly control the clamping of the clamping plate 85 on the rotating shaft 7, realize the rapid braking of the rotating shaft 7, effectively reduce the possible damage of the equipment and the interruption time of the straw raw material conveying caused by the chain breakage, and the second motor 84 drives the bidirectional threaded rod 83, which can accurately control the clamping force and position of the clamping plate 85, so as to avoid the damage of the rotating shaft 7 caused by excessive clamping force or the poor braking effect caused by insufficient clamping force.

[0036] Working principle: start the scraper conveyor, the first motor 3 starts to run, through the transmission assembly 4 power transmission to the rotating shaft 7, and then drive the conveyor body 5 to run.At this time, the roller 52 at both ends of the push plate 51 rolls in the slide 11, the proximity sensor 13 on the connecting frame 12 above the slide 11 continuously senses the approach or departure of the roller 52, and monitors its normal movement state.When the chain of the scraper conveyor breaks or other abnormal conditions occur, the movement state of the push plate 51 and the roller 52 changes accordingly, the proximity sensor 13 detects the abnormality of the movement state of the roller 52, immediately sends out a signal, and simultaneously transmits the signal to the brake assembly 8 and the first motor 3;

[0037] After the first motor 3 receives the abnormal signal, it stops driving and cuts off the power source of the conveyor body 5.At the same time, the second motor 84 in the brake assembly 8 receives the signal to start, drives the bidirectional threaded rod 83 to rotate, and under the limitation of the slide rod 82, the two ends of the symmetrically connected clamping plates 85 move towards each other along the slide rod 82 direction.As the top of the clamping plate 85 is arc-shaped and matched with the rotating shaft 7, with the movement of the clamping plate 85, the rotating shaft 7 will be gradually clamped.The brake plate 86 on the inner side of the top of the clamping plate 85 increases the friction between the rotating shaft 7, so that the rotating shaft 7 stops rotating quickly, effectively avoiding more damage caused by the continuous rotation of the rotating shaft 7 after the chain breaks, and completing the protection of the scraper conveyor;

[0038] The staff handles the chain breakage and other faults of the scraper conveyor according to the alarm prompt of the sensor 13.After troubleshooting, restart the scraper conveyor, and the protection device enters the running monitoring state again, continuously ensuring the safe and stable operation of the equipment.

[0039] The above shows and describes the basic principle and main features of the present application and the advantages of the present application.For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the present application.Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.Any reference signs in the claims should not be considered as limiting the claims involved.

[0040] In addition, it should be understood that although the present application is described in the form of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A protection device for a flight conveyor, comprising a housing (1), characterised in that: The shell (1) is internally provided with a conveyor body (5), the inner wall of the shell (1) is fixedly provided with a slide (11), the conveyor body (5) comprises a push plate (51), both ends of the push plate (51) are rotatably connected with rollers (52), the rollers (52) are arranged in the slide (11), a connecting frame (12) is installed on the inner wall of the shell (1), a sensor (13) is installed on the connecting frame (12), the output end of the sensor (13) is arranged above the slide (11), a first motor (3) is installed on the top of the shell (1), the output end of the first motor (3) is connected with a transmission assembly (4), the output end of the first motor (3) is connected with the rotating shaft (7) through the transmission assembly (4), a plurality of rotating shafts (7) are arranged in the conveyor body (5), and the rotating shaft (7) is provided with a brake assembly (8) at one end.

2. A protection device for an apron conveyor according to claim 1, characterized in that: The front and rear sides of the shell (1) are fixedly provided with mounting frames (2), the mounting frames (2) are installed with rotating frames (6), and the rotating shafts (7) are rotatably installed in the rotating frames (6).

3. A protection device for an apron conveyor according to claim 2, characterized in that: The mounting frames (2) are provided with mounting plates (21), and the mounting plates (21) correspond to the rotating frames (6).

4. A guard for an apron conveyor according to claim 3, characterised in that: The brake assembly (8) comprises a fixed frame (81), the fixed frame (81) is installed on the mounting plate (21), the fixed frame (81) is rotatably installed with a bidirectional threaded rod (83), the bidirectional threaded rod (83) is connected with the output end of a second motor (84), the two sides of the bidirectional threaded rod (83) are provided with slide rods (82) in parallel, the slide rods (82) are fixedly installed on the fixed frame (81), and the two ends of the bidirectional threaded rod (83) are spirally connected with symmetrical clamping plates (85).

5. A guard for an apron conveyor according to claim 4, characterised in that: The top of the clamping plate (85) is arc-shaped and matched with the rotating shaft (7).

6. A guard for a flight conveyor as claimed in claim 5, characterised in that: The top of the clamping plate (85) is internally provided with a brake plate (86).

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