CN219313835U - Broken chain detection device - Google Patents

Abstract

The utility model provides a broken chain detection device, is including being used for setting up the axle bed on the scraper conveyor organism, rotationally installs the gyro wheel that is used for bearing scraper conveyor chain on the axle bed, is equipped with along with gyro wheel pivoted sensing piece on the lateral wall that gyro wheel and axle bed are relative, and the axle bed still is equipped with at sensing piece along with the gyro wheel rotation in-process can acquire the detection sensor of sensing piece signal. The broken chain detection device can judge whether broken chain occurs or not by utilizing the rolling wheel rotation state of the supporting scraper chain, has low cost and strong timeliness, is convenient for finding the broken chain condition in time, and is further beneficial to reducing the damage caused by broken chain.

Description

Broken chain detection device

Technical Field

The utility model relates to the technical field of delayed coking equipment, in particular to a broken chain detection device.

Background

The delayed coking process is used as a heavy oil deep processing process capable of converting inferior and heavy residual oil into gas, light and medium distillate oil and petroleum coke, and the decoking and the transportation of petroleum coke are an indispensable link in the delayed coking process, and the conventional water filtering scraper conveyor is used for transporting and transporting petroleum coke.

The existing broken chain detection system is characterized in that a force transducer is arranged at a main shaft of a scraper conveyor, whether the broken chain is broken or not is judged by detecting the change of forces at two sides of the main shaft, and the detection system has relatively good detection environment, but has higher implementation cost, and a tensioning structure belongs to a driving wheel tensioning structure and cannot be used for a tail tensioning structure; the detection switch is also installed at the tail tensioning wheel, whether the chain is broken is judged through the rotating speed of the tensioning shaft, but the tensioning shaft is a long shaft, when one side of the chain is broken, the shaft can still rotate normally, the relation between the mode and the chain breaking position is large, the chain breaking cannot be fed back in time, equipment is blocked, the chain breaking on which side of the conveyor is can not be judged, the chain breaking information is lagged, and the potential safety hazard is large.

Disclosure of Invention

The utility model aims to provide a broken chain detection device which can judge whether broken chains occur or not by utilizing the rotation state of rollers for supporting a scraper chain, has low cost and strong timeliness, is convenient for finding out broken chain conditions in time, and is further beneficial to reducing damage caused by broken chains.

The technical scheme adopted by the utility model for achieving the purpose is as follows:

the utility model provides a broken chain detection device, is including being used for setting up the axle bed on the scraper conveyor organism, rotationally installs the gyro wheel that is used for bearing scraper conveyor chain on the axle bed, is equipped with along with gyro wheel pivoted sensing piece on the lateral wall that gyro wheel and axle bed are relative, and the axle bed still is equipped with at sensing piece along with the gyro wheel rotation in-process can acquire the detection sensor of sensing piece signal.

As a preferable scheme of the utility model, a mandrel with one end extending out of the shaft seat is arranged horizontally penetrating through the shaft seat, a bearing is arranged on the part of the mandrel extending out of the shaft seat, and the roller is sleeved on the bearing.

As a preferred aspect of the utility model, the length of the portion of the spindle extending out of the axle seat is less than the length of the spindle within the axle seat.

As a preferable mode of the present utility model, the bearing is a self-lubricating bearing.

As a preferable scheme of the utility model, the mandrel is in sealing fit with the shaft seat and the roller.

As a preferable scheme of the utility model, a sleeve is arranged through the shaft seat, one end of the sleeve, which is close to the roller, is provided with a connecting sleeve for sealing and plugging the sleeve, and the detection sensor is arranged on the connecting sleeve.

As a preferred embodiment of the utility model, the connecting sleeve is threadedly mounted in the sleeve.

As a preferable mode of the present utility model, the detection sensor is a proximity switch.

As a preferable scheme of the utility model, a plurality of sensing blocks are arranged, and the plurality of sensing blocks are uniformly distributed on the roller around the axle center of the roller.

The utility model has the beneficial effects that:

the chain breakage detection device comprises the roller, the detection sensor and the sensing block which are arranged on the scraper conveyor in the prior art, and when the chain breakage detection device is used, whether chain breakage occurs or not can be judged by utilizing the rotation state of the roller for supporting the scraper chain, so that the chain breakage detection device is low in manufacturing cost and high in timeliness, and is convenient for finding out the chain breakage condition in time, thereby being beneficial to taking disposal measures in time and reducing damage of the broken chain to equipment.

Drawings

Fig. 1 is a schematic side view of a chain breakage detection device according to an embodiment;

FIG. 2 is a schematic cross-sectional view of FIG. 1 taken along line A-A;

fig. 3 is a schematic view of a partial installation structure of a broken chain detection device on a scraper conveyor according to an embodiment.

The marks in the figure: 1. the device comprises a roller, 2, a bearing, 3, a mandrel, 4, a flange, 5, a shaft seat, 6, an induction block, 7, a detection sensor, 8, a connecting sleeve, 9, a sleeve, 10, a handle, 11, a lip seal ring, 12, a blank cap, 13, an end cover, 14, an O-shaped sealing ring, 15, a transparent cover, 16, a labyrinth cover, 17, a fixed labyrinth, 18, a large gasket, 19, a round nut, 20 and an oil cup.

Detailed Description

The utility model will be further described with reference to the drawings and detailed description, wherein, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

The utility model provides a specific embodiment of a broken chain detection device, which comprises:

referring to fig. 1 to 3, the broken chain detection device of this embodiment includes a shaft seat 5, when in use, the shaft seat 5 and a flange 4 are fixed by bolting, the flange 4 is welded on the body of the scraper conveyor, during specific application, a plurality of shaft seats 5 can be installed along the body of the scraper conveyor at intervals, a mandrel 3 is horizontally arranged through the shaft seat 5, one end of the mandrel 3 extends out of the shaft seat 5, a bearing 2 is arranged at the part of the mandrel 3 extending out of the shaft seat 5, the roller 1 is sleeved on the bearing 2, a groove is arranged on the roller 1 along with the roller 1, the groove is used for supporting a working chain of the scraper conveyor, when the scraper conveyor works, the roller 1 rotates along with dragging of the working chain, a sensing block 6 is arranged on a side wall opposite to the roller 1, the sensing block 6 rotates along with the rotation of the roller 1, a detection sensor 7 is arranged in a gap between the roller 1 and the shaft seat 5, during normal working, the sensing block 6 rotates along with the roller 1, the detection sensor 7 can sense the sensing block 6, thereby acquiring a sensing signal, and the specific sensing block 6 is positioned in a rotation track corresponding to the rotation track 6.

When the chain breakage detection device is applied, as shown in the combination of fig. 3, after the chain breakage detection device is arranged on a scraper conveyor body, the working chain of the scraper conveyor is supported on the roller 1, in the normal working process, the scraper chain runs in the scraper conveyor, the roller 1 rotates on the mandrel 3, the sensing block 6 rotates along with the roller 1, the detection sensor 7 regularly acquires the sensing signal of the sensing block 6, after the scraper chain breaks, the roller 1 does not rotate, the detection sensor 7 cannot regularly acquire the sensing signal of the sensing block 6 any more, so that the occurrence of chain breakage is judged, the staff can take treatment measures in time, whether the chain breakage occurs or not can be judged by utilizing the rotation state of the roller 1 for supporting the scraper chain, the device has low preparation cost, strong detection timeliness, the chain breakage condition can be found conveniently in time, and treatment measures can be taken timely, so that the damage caused by the chain breakage to equipment can be reduced.

In this embodiment, only one sensing block 6 is generally provided, since the sensing block 6 needs to rotate along with the roller 1 when the sensing sensor 7 acquires the sensing signal of the sensing block 6, after the chain breakage occurs, the roller 1 does not rotate any more, the sensing sensor 7 needs to wait for the sensing block 6 to rotate along with the roller 1 for one round to judge whether the chain breakage occurs, in order to further improve the timeliness of acquiring the sensing signal, the sensing block 6 can be provided with a plurality of sensing blocks, and the sensing blocks 6 are uniformly distributed on the roller 1 around the axis of the roller 1, for example, the sensing blocks 6 are provided with three sensing blocks, after the chain breakage occurs, when the roller 1 does not rotate any more, the sensing sensor 7 only needs to wait one third of the original time at the longest, so that whether the chain breakage occurs can be further timely judged.

When the spindle 3 is arranged, as shown in connection with fig. 2, the portion of the spindle 3 extending out of the shaft seat 5 has a length which is smaller than the length of the spindle 3 in the shaft seat 5, e.g. the portion of the spindle 3 extending out of the shaft seat 5: the length of the mandrel 3 in the shaft seat 5 is 1:2, for conveying the coke in the delayed coking, the water-coke mixture is in the machine body of the conveyor, the conveying speed is low, the load is high, the extending part of the mandrel 3 is shorter, and the mandrel 3 can bear larger bending moment and is more suitable for the occasion of low-speed heavy load.

When the detection sensor 7 is specifically installed, the detection sensor 7 can be a proximity switch, for example, an explosion-proof proximity switch of the model NI8-P18-Y1/S139-S1261 can be adopted, during installation, as shown in combination with FIG. 2, the sleeve 9 can be installed in the shaft seat 5 in a penetrating manner through the flange plate, one end, close to the roller 1, of the sleeve 9 is provided with the connecting sleeve 8, the sleeve 8 seals and plugs the sleeve 9, the detection sensor 7 can be installed in the shaft center of the connecting sleeve 8 through threaded fit, and a signal wire of the detection sensor 7 is led out of the shaft seat 5 through the sleeve 9.

In this embodiment, the self-lubricating bearing is preferably adopted for the bearing 2, and as mentioned above, when the roller 1 for supporting the scraper chain is in use, some of the roller is in a working environment immersed in the water-coke mixture, and the self-lubricating bearing can avoid the operation of oiling and supplementing oil by the transmission bearing, so that the maintenance difficulty of the device is reduced, and meanwhile, the self-lubricating bearing can increase the contact surface, improve the bearing capacity of the shaft and reduce the hardness requirement of the shaft.

As described above, for the coke conveying in the delayed coking, the water-coke mixture is in the machine body of the conveyor, the environment where the spindle 3 of this embodiment is located is relatively bad, in order to reduce the sewage or other foreign matters entering between the spindle 3 and other mating structures, the spindle 3 and the axle seat 5, the roller 1 are mounted in a sealing fit manner, the sealing mounting may be any existing sealing mounting form, as shown in fig. 2, in the process of sealing mounting, an O-shaped sealing ring 14 is disposed at one end of the spindle 3 for mounting the roller 1, and a cover 13 is used for sealing the end cover, a layer of a sealing cap 12 is disposed outside the cover 13, thereby realizing the sealing of the end of the spindle 3 extending out of the axle seat 5, sealing blocking is realized by sleeving a large washer 18 and a round nut 19 at one end of the spindle 3, and a part of the spindle 3 located between the roller 1 and the axle seat 5 can be provided with a lip-shaped sealing ring 11, and the sealing fit between the roller 1 and the axle seat 5 is realized by setting a labyrinth cover 15 and a fixed labyrinth 17, and the sealing fit between the part of the spindle 3 located between the roller 1 and the axle seat 1 and the roller 5 can be realized by multiple-stage sealing, the sewage can effectively seal, the environment can be prevented from entering the corresponding to the spindle 3 or other mating structures, and the lubricant cup 20 can be directly mounted outside the spindle by the lubricant cup.

It should be noted that, the portion Wen Weixiang is a prior art, and the above embodiments are only for illustrating the present utility model, but the present utility model is not limited to the above embodiments, and any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model falls within the protection scope of the present utility model.

Claims (6)

1. The utility model provides a broken chain detection device which characterized in that: including being used for setting up axle bed (5) on scraper conveyor organism, rotatable mounting has gyro wheel (1) that are used for bearing scraper conveyor chain on axle bed (5), be equipped with on the lateral wall that gyro wheel (1) are relative with axle bed (5) along with gyro wheel (1) pivoted sensing piece (6), axle bed (5) still are equipped with at sensing piece (6) along with gyro wheel (1) rotation in-process detection sensor (7) that can acquire sensing piece (6) signal, horizontal run through axle bed (5) are equipped with spindle (3) that one end stretched out axle bed (5), the part that spindle (3) stretched out axle bed (5) is equipped with bearing (2), gyro wheel (1) cover is established on bearing (2), the length that spindle (3) stretched out axle bed (5) part is less than spindle (3) and is in the length in axle bed (5), spindle (3) and axle bed (5), can set up the lubrication oil hole on spindle (3), oil cup (20) are installed in the one end of spindle (3).

2. A chain breakage detection device as claimed in claim 1, wherein: the bearing (2) is a self-lubricating bearing.

3. A chain breakage detection device as claimed in claim 1, wherein: a sleeve (9) is arranged penetrating through the shaft seat (5), one end of the sleeve (9) close to the roller (1) is provided with a connecting sleeve (8) for sealing and plugging the sleeve (9), and the detection sensor (7) is arranged on the connecting sleeve (8).

4. A chain breakage detection device according to claim 3, wherein: the connecting sleeve (8) is arranged in the sleeve (9) in a threaded manner.

5. A chain breakage detection device as claimed in claim 1, wherein: the detection sensor (7) is a proximity switch.

6. A chain breakage detection device as claimed in claim 1, wherein: the induction blocks (6) are arranged in a plurality, and the induction blocks (6) are uniformly distributed on the roller (1) around the axle center of the roller (1).

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