Squirrel-cage induction disc device

Abstract

A squirrel-cage induction disc device comprises an induction disc, an induction block and a proximity switch. The induction disc comprises a disc body and a cylinder body; one end of the cylinder body is connected to the disc body, and the induction block is arranged on the outer side wall of the cylinder body; the proximity switches comprise a first proximity switch and a second proximity switch; the first proximity switch and the second proximity switch are both arranged in the radial direction of the induction disc; the first proximity switch and the second proximity switch are arranged at an interval, so that the first proximity switch is aligned with the induction blocks, and the second proximity switch is aligned with a non-induction space between the adjacent induction blocks. According to the embodiment of the utility model, the induction block is arranged on the lateral surface of the induction disc, and the proximity switch is arranged in the radial direction, so that the occupation of the device in the axial space is reduced, the device does not occupy too much aisle space after being arranged on the conveying equipment, and the convenience of overhauling and maintaining the equipment is ensured; and monitoring is carried out through the two proximity switches, so that the measurement accuracy is improved.

Description

Technical Field

[0001] This utility model belongs to the field of automated conveying equipment technology, and in particular relates to a rat cage induction plate device. Background Technology

[0002] With the booming development of industries such as power and chemicals, a large number of infrastructure projects, including thermal power plants, steel mills, and heating plants, have been constructed. In these industrial settings, the transportation of boiler bottom ash is a crucial step, and conveying equipment such as scraper conveyors, chain bucket conveyors, and bucket elevators are widely used. To ensure the stable operation of these conveying devices, induction monitoring devices are widely used to monitor their operating status.

[0003] However, during the operation of conveyor equipment, faults such as chain misalignment and chain skipping occur frequently, which can seriously affect the normal operation of the conveyor. To detect these abnormalities promptly, most conveyor systems employ induction disc devices. This device consists of an induction disc and a proximity switch. The induction disc has a sensing block and is connected to the drive shaft of the conveyor's tensioning device. When the conveyor is running, the induction disc rotates with the drive shaft, and the proximity switch obtains the drive shaft's rotational speed information through the sensing block. Once the drive shaft's rotational speed changes abruptly, or the rotational speeds of the two drive shafts are inconsistent, it can be determined that the conveyor has experienced chain skipping or chain misalignment.

[0004] While induction plate devices play a crucial role in monitoring the operating status of conveyor equipment, existing technologies still have several limitations. First, the sensing blocks are typically mounted on the induction plate surface, requiring the proximity switch to be axially mounted on one side of the blocks. This results in an excessively large axial dimension for the induction plate device. Since maintenance passages are usually located between adjacent conveyor systems, the excessive axial size of the induction plate device encroaches on maintenance space, causing significant inconvenience for equipment inspection and maintenance. Second, existing devices rely solely on a single proximity switch for monitoring, leading to insufficient measurement accuracy and a high risk of false alarms. This can trigger emergency braking or shutdown of the equipment, damaging the equipment itself, shortening its lifespan, and in severe cases, even causing safety accidents. Utility Model Content

[0005] In view of the shortcomings of the related technologies, this utility model provides a squirrel-cage induction plate device to solve the problems of excessive axial space occupation and insufficient measurement accuracy of the current induction plate device.

[0006] This utility model provides a mouse cage-type induction plate device, comprising:

[0007] The induction disc is used to connect the drive shaft;

[0008] A sensing block is mounted on the sensing disk;

[0009] A proximity switch is disposed on one side of the sensing disk and is used to sense the sensing block;

[0010] The induction disk includes:

[0011] The disc body is used to be mounted on the drive shaft;

[0012] A cylindrical body, one end of which is connected to the disk body; the cylindrical body and the disk body are coaxially arranged, and the sensing blocks are installed on the outer side wall of the cylindrical body, with multiple sensing blocks evenly spaced on the circumference of the cylindrical body;

[0013] The proximity switch includes a first proximity switch and a second proximity switch; both the first proximity switch and the second proximity switch are disposed radially on the sensing disk; the first proximity switch and the second proximity switch are spaced apart so that the first proximity switch is aligned with the sensing block and the second proximity switch is aligned with the non-sensing space between adjacent sensing blocks.

[0014] In some embodiments, the angle between the two ends of the non-inductive space is the same as the angle between the first proximity switch and the second proximity switch.

[0015] In some embodiments, the cylinder has process holes, and multiple process holes are evenly spaced on the circumference of the cylinder. The cylinder between adjacent process holes is the sensing block.

[0016] In some embodiments, it further includes:

[0017] A protective cover is provided for connecting the shaft seat of the drive shaft; the protective cover has an opening on the side near the shaft seat for mounting the sensing disk inside the protective cover through the opening, and the proximity switch is mounted inside the protective cover.

[0018] In some embodiments, the protective cover has a support arm at its top for connecting the bearing seat.

[0019] In some embodiments, two support arms are provided, with an extension channel between the two support arms, through which the induction disk extends out of the protective cover.

[0020] In some embodiments, the protective cover has multiple ventilation holes on the side away from the induction disk.

[0021] In some embodiments, the disc is connected to the end of the cylinder away from the protective cover.

[0022] In some embodiments, the device further includes: a mounting base for connecting a frame; two mounting bases are located below the sensing disk; the first proximity switch and the second proximity switch are respectively mounted on the two mounting bases; and a notch is provided on the protective cover, the notch being aligned with the proximity switch in both the radial and axial directions.

[0023] In some embodiments, a bolt hole is provided at the center of the disc body, and a connecting bolt for connecting the drive shaft is installed in the bolt hole.

[0024] Compared with the prior art, the beneficial effects of this application are as follows: In this embodiment, the sensing block is installed on the side surface of the sensing disk, and the proximity switch is radially arranged, which reduces the axial space occupied by the device. This ensures that the device will not occupy too much space in the passageway after being installed on the conveying equipment, thus guaranteeing the convenience of equipment inspection and maintenance. Monitoring is performed by two proximity switches, with one proximity switch sensing the sensing block and the other proximity switch verifying its sensing. This improves the measurement accuracy, avoids emergency braking or shutdown caused by false alarms, extends the service life of the equipment, avoids safety accidents, and solves the problems of excessive axial space occupation and insufficient measurement accuracy of current sensing disk devices. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0026] Figure 1 This is a schematic diagram of the structure of the mouse cage induction plate device of this utility model. Figure 1 ;

[0027] Figure 2 This is a schematic diagram of the structure of the mouse cage induction plate device of this utility model. Figure 2 ;

[0028] Figure 3 This is a cross-sectional view of the mouse cage induction plate device of this utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the mouse cage induction plate device of this utility model after the protective cover is hidden.

[0030] Figure 5 This is a schematic diagram of the structure of the induction plate in the mouse cage induction plate device of this utility model.

[0031] In the picture:

[0032] 100. Frame; 200. Drive shaft; 300. Shaft seat; 1. Induction disc; 101. Disc body; 102. Cylinder body; 103. Bolt hole; 104. Connecting bolt; 105. Process hole; 2. Induction block; 201. Non-induction space; 3. Proximity switch; 301. First proximity switch; 302. Second proximity switch; 4. Protective cover; 401. Opening; 402. Support arm; 403. Extension channel; 404. Vent hole; 405. Notch; 5. Fixing base. Detailed Implementation

[0033] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0034] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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.

[0035] The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.

[0037] The conveying equipment includes a frame, chains, sprockets, and a motor. The chains and sprockets form a chain drive mechanism, symmetrically mounted on both sides of the frame. Each chain drive mechanism has two sprockets, one at each end of the frame, with the chain installed between them. A scraper or hopper is installed between the two chain drives, with adjacent chains connected to both sides of each scraper or hopper. Multiple scrapers or hoppers are continuously arranged along the chain distribution direction. The motor drives two sprockets at one end of the frame to rotate, causing each sprocket to drive the scraper or hopper via two chains, thus transporting material from one end of the frame to the other. Material is fed from top to bottom onto the scraper or hopper at one end of the frame. As the scraper or hopper moves to the other end of the frame and rotates downwards with the chain, it unloads the material from the scraper or hopper. To prevent the chain from slipping between itself and the sprocket due to slack, the conveying equipment also includes a tensioning device, which is a tensioning wheel. A bearing is installed on the frame, and the drive shaft of the tensioning wheel is mounted on the bearing. The tensioning wheel pushes the adjacent chain to tension it. The tensioning wheel rotates with the chain and the drive shaft rotates synchronously.

[0038] like Figures 1 to 5 As shown in an illustrative embodiment of the rat cage induction plate device of this utility model, the rat cage induction plate device includes an induction plate 1, an induction block 2, and a proximity switch 3.

[0039] The induction disk 1 is connected to and coaxial with the drive shaft 200, thus rotating synchronously with the drive shaft 200. The induction block 2 is mounted on the induction disk 1, and a proximity switch 3 is located on one side of the induction disk 1 to sense the induction block 2. The proximity switch 3 senses the induction block 2 in a non-contact manner; this sensing method is prior art and not the subject of this invention.

[0040] The induction plate 1 includes a plate body 101 and a cylindrical body 102. The plate body 101 is disc-shaped, and the cylindrical body 102 is cylindrical, both coaxially arranged. One side surface of the plate body 101 is connected to one end of the cylindrical body 102, so that the plate body 101 closes the port of one end of the cylindrical body 102, and the two are combined to form a squirrel cage structure. The sensing block 2 is installed on the outer wall of the cylindrical body 102, and the proximity switch 3 is located radially on the induction plate 1, so that the sensing end of the proximity switch 3 can be aligned with the sensing block 2 located on the side of the induction plate 1. This structural design allows the induction plate 1 and the proximity switch 3 to be radially aligned, and the proximity switch 3 occupies radial space but does not occupy axial space. Since the drive shaft 200 of the tensioning device is horizontally arranged, the induction plate 1 is connected to one end of the drive shaft 200 that extends horizontally out of the conveying equipment, so that the induction plate 1 and the proximity switch 3 are located in the passage between adjacent conveying equipment. The induction plate 1 and the proximity switch 3 are arranged radially, occupying little axial space, reducing the encroachment on the passage space, and ensuring the convenience of equipment inspection and maintenance.

[0041] Multiple sensing blocks 2 are evenly spaced along the outer wall of the cylinder 102. The proximity switch 3 includes a first proximity switch 301 and a second proximity switch 302. The first proximity switch 301 and the second proximity switch 302 are spaced apart, such that when the first proximity switch 301 is aligned with a sensing block 2, the second proximity switch 302 is aligned with the non-sensing space 201 between adjacent sensing blocks 2. Both the first proximity switch 301 and the second proximity switch 302 are electrically connected to a sensing controller. The sensing controller uses the sensing of the sensing block 2 by the first proximity switch 301 to determine how many times the first proximity switch 301 can sense the sensing block 2 per unit time, thereby determining the rotational speed of the drive shaft 200 connected to the sensing disk 1. Simultaneously, when the first proximity switch 301 senses the sensing block 2, the sensing controller verifies and confirms that the first proximity switch 301's sensing of the sensing block 2 is accurate because the second proximity switch 302 does not sense the sensing block 2. This structural design ensures that only one proximity switch 3 is radially aligned with the sensing block 2 at any given time, guaranteeing accurate sensing of the sensing block 2 by the proximity switch 3, improving measurement accuracy, avoiding emergency braking or shutdown caused by false alarms, extending equipment lifespan, and preventing safety accidents.

[0042] In some embodiments, the included angle between the two ends of the non-inductive space 201 is the same as the included angle between the first proximity switch 301 and the second proximity switch 302. This structural design ensures that when the first proximity switch 301 is aligned with the end of the adjacent sensing block 2 opposite to the direction of rotation, the second proximity switch 302 is aligned with the end of the adjacent non-inductive space 201 opposite to the direction of rotation. Further rotation of the sensing block 2 will cause the first proximity switch 301 to align with the non-inductive space 201 and the second proximity switch 302 to align with the sensing block 2, ensuring that only one proximity switch 3 senses the adjacent sensing block 2 at any given time. This allows one proximity switch 3 to perform measurement while the other proximity switch 3 serves as verification, ensuring improved detection accuracy.

[0043] In some embodiments, a process hole 105 is provided on the cylinder 102, and the process hole 105 radially penetrates the cylinder 102. Multiple process holes 105 are arranged at equal intervals around the circumference of the cylinder 102, and the portion of the cylinder 102 located between two adjacent process holes 105 serves as the sensing block 2. This structural design allows one proximity switch 3 to be radially aligned with the sensing block 2 and detect it, while another proximity switch 3 is aligned with the process hole 105 and does not detect the sensing block 2. This achieves one proximity switch 3 for measurement and the other for verification, eliminating the need for an additional protruding structure on the outer wall of the cylinder 102 as the sensing block 2. Furthermore, it removes part of the cylinder 102, reducing the material used in the sensing disk 1, lowering costs and weight, and eliminating the risk of the externally mounted sensing block 2 falling off the sensing disk 1 due to insecure fixation.

[0044] In some embodiments, the cage-type induction plate device further includes a protective cover 4. The drive shaft 200 is mounted to the frame 100 of the conveying equipment via a shaft seat 300, and the protective cover 4 is connected to the shaft seat 300 for fixation. The protective cover 4 has an opening 401 on the side near the drive shaft 200, and the induction plate 1 is installed inside the protective cover 4 through the opening 401, allowing the induction plate 1 to be exposed through the opening 401 for connection to the drive shaft 200. A proximity switch 3 is installed in the protective cover 4, with its sensing end located inside the protective cover 4 for sensing the induction block 2; the connecting end of the proximity switch 3 extends outside the protective cover 4 for connection to a sensing controller via a cable. This structural design allows the protective cover 4 to cover the induction plate 1 and the sensing end of the proximity switch 3, protecting both from damage by falling materials during the operation of the conveying equipment. Furthermore, the protective cover 4 has a simple structure, and the induction plate 1 and proximity switch 3 are easy to install.

[0045] In some embodiments, a support arm 402 is provided at the top of the protective cover 4. The support arm 402 extends towards the drive shaft 200 and connects to the bearing seat 300, so that the bearing seat 300 supports the protective cover 4 via the support arm 402. This structural design places the support arm 402 above the drive shaft 200 and the bearing seat 300, increasing the coverage area of ​​the top of the protective cover 4. This ensures that the protective cover 4 not only protects the drive shaft 200 and the bearing seat 300, but also effectively protects the connection between the drive shaft 200 and the induction disk 1, preventing collisions with materials ejected from the conveying equipment that could cause the induction disk 1 to detach from the drive shaft 200, thus improving equipment safety and production safety.

[0046] In some embodiments, two support arms 402 are provided. The two support arms 402 are spaced apart to form an extension channel 403 between them. The induction plate 1 extends out of the protective cover 4 through the extension channel 403. This structural design allows the exposed portion of the induction plate 1 to be easily observed by operators for wear, cracks, dirt, etc., without disassembling the equipment, enabling quick assessment of the basic condition of the induction plate 1 and improving inspection efficiency. In addition, for induction plates 1 with complex operating conditions that require periodic adjustments, the exposed portion makes related adjustment operations more convenient, allowing operators to directly access and perform maintenance work, reducing maintenance difficulty and costs.

[0047] In some embodiments, the protective cover 4 has multiple vent holes 404 on the side away from the induction disk 1. This structural design allows the heat generated by the proximity switch 3 when it is powered on and the drive shaft 200 and the induction disk 1 when they rotate to be quickly dissipated through the vent holes 404, ensuring that the device can operate stably for a long time. Furthermore, since the vent holes 404 are opened to the side, no foreign objects will fall into the protective cover 4 through the vent holes 404.

[0048] In some embodiments, the disc body 101 is connected to the end of the cylinder 102 away from the protective cover 4. This structural design allows the closed end of the sensing disc 1 to face or partially extend out of the opening 401 of the protective cover 4. The disc body 101 of the sensing disc 1 can close the opening 401 of the protective cover 4 to a certain extent. While ensuring that the structure of the protective cover 4 is simple and easy to install the sensing disc 1 and the proximity switch 3, the risk of materials falling into the protective cover 4 is reduced, and the safety of the internal structure of the protective cover 4 is improved.

[0049] In some embodiments, the cage-type induction plate device further includes a mounting base 5, which is connected to the frame 100. Two mounting bases 5 are provided, both located below the induction plate 1. The first proximity switch 301 and the second proximity switch 302 are respectively mounted on the two mounting bases 5, such that the proximity switches 3 are both located in the lower part of the internal space of the protective cover 4. A notch 405 is provided on the protective cover 4, which is aligned with the proximity switch 3 in both the radial and axial directions. This structural design achieves the installation and fixation of the proximity switch 3, while ensuring that the connection end of the proximity switch 3 faces downwards and extends out of the protective cover 4 through the notch 405. The cable connected to the connection end can easily extend downwards and be connected without additional cable fixing. Furthermore, the induction plate 1 provides a certain degree of coverage over the proximity switch 3 from top to bottom, protecting it. In addition, the notch 405 allows for comprehensive observation of the operating status of the proximity switch 3 from two directions, and provides a convenient window for disassembly and maintenance of the proximity switch 3, facilitating inspection and repair.

[0050] In some embodiments, a bolt hole 103 is provided at the center of the disk body 101, and a connecting bolt 104 installed in the bolt hole 103 is screwed into the end face of the drive shaft 200, so that the induction disk 1 is coaxially and fixedly connected to the drive shaft 200 by the connecting bolt 104. This structural design makes the installation of the induction disk 1 convenient, the structure simple, and the cost low.

[0051] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0052] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A mouse-cage type induction plate device, characterized in that, include: The induction disc is used to connect the drive shaft; A sensing block is mounted on the sensing disk; A proximity switch is disposed on one side of the sensing disk and is used to sense the sensing block; The induction disk includes: The disc body is used to be mounted on the drive shaft; A cylindrical body, one end of which is connected to the disk body; the cylindrical body and the disk body are coaxially arranged, and the sensing blocks are installed on the outer side wall of the cylindrical body, with multiple sensing blocks evenly spaced on the circumference of the cylindrical body; The proximity switch includes a first proximity switch and a second proximity switch; both the first proximity switch and the second proximity switch are disposed radially on the sensing disk; the first proximity switch and the second proximity switch are spaced apart so that the first proximity switch is aligned with the sensing block and the second proximity switch is aligned with the non-sensing space between adjacent sensing blocks.

2. The mouse-cage induction plate device according to claim 1, characterized in that, The included angle between the two ends of the non-inductive space is the same as the included angle between the first proximity switch and the second proximity switch.

3. The mouse-cage induction plate device according to claim 1, characterized in that, The cylinder has process holes, and multiple process holes are evenly spaced on the circumference of the cylinder. The cylinder between adjacent process holes is the sensing block.

4. The mouse-cage induction plate device according to claim 1, characterized in that, Further includes: A protective cover for connecting the drive shaft to the bearing seat; The protective cover has an opening on the side near the shaft seat, through which the sensing disk is installed inside the protective cover, and the proximity switch is installed inside the protective cover.

5. The mouse-cage induction plate device according to claim 4, characterized in that, The protective cover has a support arm at its top, which is used to connect the shaft seat.

6. The mouse-cage induction plate device according to claim 5, characterized in that, The support arm is provided in two parts, and an extension channel is provided between the two support arms. The induction disk extends out of the protective cover through the extension channel.

7. The mouse-cage induction plate device according to claim 4, characterized in that, The protective cover has multiple ventilation holes on the side away from the induction plate.

8. The mouse-cage induction plate device according to claim 4, characterized in that, The disc is connected to the end of the cylinder that is away from the protective cover.

9. The mouse-cage type induction plate device according to claim 4, characterized in that, Further includes: A mounting base is used to connect the frame; there are two mounting bases, both located below the sensing disk; the first proximity switch and the second proximity switch are respectively mounted on the two mounting bases; the protective cover has a notch, which is aligned with the proximity switch in both the radial and axial directions.

10. The mouse-cage induction plate device according to claim 1, characterized in that, The center of the disc has a bolt hole, and a connecting bolt for connecting the drive shaft is installed in the bolt hole.

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