Permanent magnet frequency conversion and speed reduction all-in-one machine of scraper conveyer

Abstract

The utility model discloses a permanent magnet frequency conversion and speed reduction all-in-one machine of a scraper conveyer. The permanent magnet frequency conversion and speed reduction all-in-one machine comprises a strong current box body, a frequency conversion box body, a permanent magnet motor, a speed reduction device and a locking screw rod kit, the strong current box body is arranged at the tail end of the permanent magnet motor and used for controlling the permanent magnet motor, and the frequency conversion box body is arranged at the tops of the permanent magnet motor and the strong current box body and used for supplying power to the permanent magnet motor; and the speed reducer is arranged at the output end of the permanent magnet motor through the locking screw sleeve. According to the utility model, the structure is compact, the integrated design is adopted, the overall occupied space is effectively reduced, the use of cables is effectively reduced, the stability of signal transmission is increased, the corrosion and damage of cooling liquid and dust during coal mine production are effectively avoided, and the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of speed reducers, and particularly relates to a permanent magnet variable frequency speed reducing integrated machine for a scraper conveyor. Background Art

[0002] At present, for scraper conveyors on underground coal mine working faces at home and abroad, an electric motor is connected to a hydraulic coupling, and then to a speed reduction device for driving. The series arrangement has a long overall dimension, a large volume, a complex connection, and a high maintenance cost.

[0003] With the development of coal mine equipment towards modernization and intelligentization, the application scenarios of high-power variable frequency equipment in coal mines have also increased. Intelligent coal mines have higher requirements for the power of equipment and the reliability of control systems.

[0004] The traditional drive system mainly uses general products for supporting. For scraper conveyors on underground coal mine working faces at home and abroad, an electric motor is connected to a hydraulic coupling, and then to a speed reduction device for driving. The series arrangement has a long overall dimension, a large volume, and a complex connection. Since the frequency converter has a large volume and is placed far away, the signal transmission is unstable and prone to errors during use. Moreover, during transportation and maintenance, each part needs to be disassembled separately, and the connecting bolts are exposed, which are easily affected by coolant spraying and dust in the coal mine environment, resulting in corrosion and damage of the connectors, and difficulties in maintenance and disassembly, with a high cost in actual use. Content of the Utility Model

[0005] To solve some or all of the above technical problems existing in the prior art, the utility model provides a permanent magnet variable frequency speed reducing integrated machine for a scraper conveyor, which includes a high-voltage box body, a variable frequency box body, a permanent magnet motor, a speed reduction device, and a locking screw kit. The high-voltage box body is arranged at the end of the permanent magnet motor to control the permanent magnet motor. The variable frequency box body is arranged on the top of the permanent magnet motor and the high-voltage box body to supply power to the permanent magnet motor. The speed reduction device is arranged at the output end of the permanent magnet motor through the locking screw kit, wherein:

[0006] The high-voltage box body includes a module box body, control elements, and a control box cabinet door. The control elements are arranged in the module box body, and the control box cabinet door is rotatably arranged outside the module box body;

[0007] The variable-frequency box body includes a connection box body, a wiring box body, a main terminal box body, main terminals, wiring terminals, outgoing line terminals, a protective cover plate, a wiring cavity cover plate, and a variable-frequency box body cover plate. The connection box body, the incoming line box body, and the main terminal box body are arranged in sequence. The main terminals are arranged in the main terminal box body. The protective cover plate is arranged on the top of the main terminal box body. The wiring terminals are arranged in the wiring box body. The wiring cavity cover plate is arranged on the top of the wiring box body. The outgoing line terminals are arranged in the connection box body and are electrically connected to the incoming line terminals. The variable-frequency box body cover plate is arranged on the top of the connection box body.

[0008] Further, in the above-mentioned permanent magnet variable-frequency speed reduction integrated machine for scraper conveyor, the module box body and the wiring box body are fixedly connected by bolts. The top of the module box body is communicated with the bottom of the wiring box body. The main terminals are connected to the wiring terminals through the control elements.

[0009] Further, in the above-mentioned permanent magnet variable-frequency speed reduction integrated machine for scraper conveyor, motor terminals are arranged on the top of the permanent magnet motor. The motor terminals correspond to the outgoing line terminals. Through holes are arranged at the bottom of the connection box body. The motor terminals pass through the through holes and are electrically connected to the outgoing line terminals.

[0010] Further, in the above-mentioned permanent magnet variable-frequency speed reduction integrated machine for scraper conveyor, the output shaft of the permanent magnet motor is spline-connected to the speed reduction device. Threaded holes are arranged around the permanent magnet motor. Mounting holes are arranged around the speed reduction device. The mounting holes are coaxial with the threaded holes.

[0011] Further, in the above-mentioned permanent magnet variable-frequency speed reduction integrated machine for scraper conveyor, the locking screw kit includes a double-headed screw, a locking nut, and a locking washer. One end of the double-headed screw passes through the mounting hole and meshes with the threaded hole. The locking washer passes through the other end of the double-headed screw and abuts against the speed reduction device and is meshed through the locking nut.

[0012] Further, in the above-mentioned permanent magnet variable-frequency speed reduction integrated machine for scraper conveyor, between the protective cover plate and the main terminal box body, between the wiring cavity cover plate and the wiring box body, and between the variable-frequency box body cover plate and the connection box body, they are all fixedly connected by bolts.

[0013] The permanent magnet variable-frequency speed reduction integrated machine for scraper conveyor of the present utility model has the following advantages and beneficial effects:

[0014] (1) The structure of the present utility model is compact, adopting an integrated design, effectively reducing the overall occupied space, and thus being more suitable for the mining in small space sizes.

[0015] (2) The module box body is connected to the wiring box body and connected through wiring terminals, effectively reducing the use of cables and increasing the stability of signal transmission at the same time;

[0016] (3) By concentrating the cables and connectors inside the module box body, the corrosion and damage caused by coolant and dust during coal mine production are effectively avoided, and the service life is effectively extended. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only for further understanding of the embodiments of the present invention and constitute a part of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. In the drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of a permanent magnet variable frequency deceleration integrated machine for a scraper conveyor of the present utility model;

[0019] Figure 2 It is a schematic diagram of the sectional structure of a permanent magnet variable frequency deceleration integrated machine for a scraper conveyor of the present utility model;

[0020] Figure 3 It is a schematic diagram of the structure of a locking screw kit of a permanent magnet variable frequency deceleration integrated machine for a scraper conveyor of the present utility model;

[0021] Figure 4 It is a top view of a permanent magnet variable frequency deceleration integrated machine for a scraper conveyor of the present utility model;

[0022] Figure 5 It is a schematic diagram of the split structure of a permanent magnet variable frequency deceleration integrated machine for a scraper conveyor of the present utility model.

[0023] Explanation of the reference numerals in the drawings:

[0024] 1: High-voltage box body, 11: Module box body, 12: Control element, 13: Control box cabinet door;

[0025] 2: Variable frequency box body, 21: Connection box body, 22: Wiring box body, 23: Main terminal box body, 24: Main terminal, 25: Wiring terminal, 26: Outlet terminal, 27: Protective cover plate, 28: Wiring cavity cover plate, 29: Variable frequency box body cover plate;

[0026] 3: Permanent magnet motor, 31: Motor terminal, 32: Threaded hole;

[0027] 4: Deceleration device, 41: Mounting hole;

[0028] 5: Locking screw kit, 51: Double-headed screw, 52: Locking nut, 53: Locking washer. Detailed implementation manners

[0029] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below in conjunction with specific embodiments of the present utility model and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0030] As Figures 1 to 5 As shown in the figure, a permanent magnet variable frequency deceleration integrated machine for a scraper conveyor of the present utility model includes a strong electricity box body 1, a variable frequency box body 2, a permanent magnet motor 3, a deceleration device 4 and a locking screw kit 5. The strong electricity box body 1 is arranged at the end of the permanent magnet motor 3 through bolts to control the permanent magnet motor 3. The variable frequency box body 2 is arranged on the top of the permanent magnet motor 3 and the strong electricity box body 1 to supply power to the permanent magnet motor 3. The deceleration device 4 is arranged at the output end of the permanent magnet motor 3 through the locking screw kit 5, wherein:

[0031] The strong electricity box body 1 includes a module box body 11, a control element 12 and a control box cabinet door 13. The control element 12 is arranged in the module box body 11. The control box cabinet door 13 is rotatably arranged outside the module box body 11. The control element 12 can be repaired or the connecting bolts can be disassembled through the control box cabinet door 13;

[0032] The variable frequency box body 2 includes a connecting box body 21, a wiring box body 22, a main terminal box body 23, a main terminal 24, a wiring terminal 25, an outlet terminal 26, a protective cover plate 27, a wiring cavity cover plate 28 and a variable frequency box body cover plate 29. The connecting box body 21, the incoming line box body and the main terminal box body 23 are arranged in sequence. The main terminal 24 is arranged in the main terminal box body 23. The protective cover plate 27 is arranged on the top of the main terminal box body 23. The wiring terminal 25 is arranged in the wiring box body 22. The wiring cavity cover plate 28 is arranged on the top of the wiring box body 22. The outlet terminal 26 is arranged in the connecting box body 21 and is electrically connected to the incoming line terminal. The variable frequency box body cover plate 29 is arranged on the top of the connecting box body 21.

[0033] Furthermore, in a permanent magnet variable frequency speed reduction integrated machine of a scraper conveyor according to the present utility model, the module box body 11 and the wiring box body 22 are fixedly connected by bolts. The top of the module box body 11 communicates with the bottom of the wiring box body 22, thereby effectively ensuring the connection between the module box body 11 and the wiring box body 22. At the same time, the connection bolts between the module box body 11 and the wiring box body 22 are prevented from being exposed in the easily rusted area. The main terminal 24 is connected to the wiring terminal 25 through the control element 12, which can effectively reduce the use of cables. At the same time, it is ensured that the cables and the control element 12 are located inside the module box body 11 and the wiring box body 22, effectively improving the service life.

[0034] Furthermore, in a permanent magnet variable frequency speed reduction integrated machine of a scraper conveyor according to the present utility model, a motor terminal 31 is provided at the top of the permanent magnet motor 3. The motor terminal 31 corresponds to the outgoing line terminal 26. A through hole is provided at the bottom of the connection box body 21. The motor terminal 31 passes through the through hole and is electrically connected to the outgoing line terminal 26, effectively shortening the connection distance between the permanent magnet motor 3 and the variable frequency box body 2, and improving the stability of signal transmission.

[0035] Furthermore, in a permanent magnet variable frequency speed reduction integrated machine of a scraper conveyor according to the present utility model, the output shaft of the permanent magnet motor 3 is splined to the reduction device 4. Threaded holes 32 are circumferentially provided around the permanent magnet motor 3, and mounting holes 41 are circumferentially provided around the reduction device 4. The mounting holes 41 and the threaded holes 32 are coaxial, thereby effectively ensuring the overall compactness.

[0036] Furthermore, in a permanent magnet variable frequency speed reduction integrated machine of a scraper conveyor according to the present utility model, the locking screw kit 5 includes a double-headed screw 51, a locking nut 52 and a locking washer 53. One end of the double-headed screw 51 passes through the mounting hole 41 and meshes with the threaded hole 32. The locking washer 53 passes through the other end of the double-headed screw 51 and abuts against the reduction device 4 and is meshed with the locking nut 52, effectively ensuring the connection between the permanent magnet motor 3 and the reduction device 4 and reducing the vibration during power transmission.

[0037] Furthermore, in a permanent magnet variable frequency speed reduction integrated machine of a scraper conveyor according to the present utility model, between the protective cover plate 27 and the main terminal box body 23, between the wiring cavity cover plate 28 and the wiring box body 22, and between the variable frequency box body cover plate 29 and the connection box body 21, they are all fixedly connected by bolts.

[0038] Specifically, when disassembling and assembling a permanent magnet variable frequency speed reduction integrated machine for a scraper conveyor of the present utility model, open the control box door 13. By disassembling and assembling the bolts between the high-voltage electrical box body 1 and the variable frequency box body 2, and between the high-voltage electrical box body 1 and the permanent magnet motor 3, the connecting parts are all concentrated in the high-voltage electrical box body 1, thus avoiding the corrosion and damage caused by coolant and dust. Disassemble and assemble the speed reduction device 4 through the locking screw kit 5, so that the permanent magnet motor 3, the speed reduction device 4, the high-voltage electrical box body 1 and the variable frequency box body 2 are integrated, effectively reducing the overall occupied space. When wiring, only need to open the wiring cavity cover plate 28 and connect it to the wiring terminal 25 through a cable, effectively reducing the workload of the operator.

[0039] In summary, compared with the prior art, a permanent magnet variable frequency speed reduction integrated machine for a scraper conveyor of the present utility model has the following advantages and beneficial effects:

[0040] (1) Through the integrated design of the permanent magnet motor, the speed reduction device, the high-voltage electrical box body and the variable frequency box body, the overall occupied space is effectively reduced, thus being more suitable for the mining of small space sizes.

[0041] (2) The module box body is connected to the wiring box body and connected through the wiring terminal, effectively reducing the use of cables and increasing the stability of signal transmission at the same time.

[0042] (3) By concentrating the cables and connecting parts inside the module box body, the corrosion and damage caused by coolant and dust during coal mine production are effectively avoided, effectively prolonging the service life.

[0043] It should be noted that in this article, unless otherwise clearly specified and limited, the term "connection" or its synonyms should be understood in a broad sense. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood according to specific circumstances. Moreover, expressions such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. At the same time, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. In addition, "front", "rear", "left", "right", "up" and "down" in this article are all referenced with the placement state shown in the drawings.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A permanent magnet variable frequency and deceleration integrated machine for scraper conveyor, characterized in that, The permanent magnet variable frequency and speed reduction integrated machine of the scraper conveyor includes a strong electricity box body, a variable frequency box body, a permanent magnet motor, a speed reduction device and a locking screw kit. The strong electricity box body is arranged at the end of the permanent magnet motor to control the permanent magnet motor. The variable frequency box body is arranged on top of the permanent magnet motor and the strong electricity box body to supply power to the permanent magnet motor. The speed reduction device is arranged at the output end of the permanent magnet motor through the locking screw kit, where: The strong electricity box body includes a module box body, control components and a control box cabinet door. The control components are arranged in the module box body, and the control box cabinet door is rotatably arranged outside the module box body; The variable frequency box body includes a connection box body, a wiring box body, a main terminal box body, main terminals, wiring terminals, outgoing line terminals, a protective cover plate, a wiring cavity cover plate and a variable frequency box body cover plate. The connection box body, the wiring box body and the main terminal box body are arranged in sequence. The main terminals are arranged in the main terminal box body. The protective cover plate is arranged on top of the main terminal box body. The wiring terminals are arranged in the wiring box body. The wiring cavity cover plate is arranged on top of the wiring box body. The outgoing line terminals are arranged in the connection box body and are electrically connected to the wiring terminals. The variable frequency box body cover plate is arranged on top of the connection box body.

2. The permanent magnet variable frequency speed reduction integrated machine of a scraper conveyor according to claim 1, wherein The module box body and the wiring box body are fixedly connected by bolts. The top of the module box body communicates with the bottom of the wiring box body. The main terminals are connected to the wiring terminals through the control components.

3. The permanent magnet variable frequency speed reduction integrated machine of a scraper conveyor according to claim 1, wherein, Motor terminals are arranged on top of the permanent magnet motor. The motor terminals correspond to the outgoing line terminals. A through hole is arranged at the bottom of the connection box body. The motor terminals pass through the through hole and are electrically connected to the outgoing line terminals.

4. A permanent magnet variable frequency and deceleration integrated machine for scraper conveyor according to claim 1, wherein, The output shaft of the permanent magnet motor is spline-connected to the speed reduction device. Threaded holes are arranged around the permanent magnet motor. Mounting holes are arranged around the speed reduction device. The mounting holes are coaxial with the threaded holes.

5. The permanent magnet variable frequency and deceleration integrated machine of a scraper conveyor according to claim 4, wherein The locking screw kit includes a double-headed screw, a locking nut and a locking washer. One end of the double-headed screw passes through the mounting hole and meshes with the threaded hole. The locking washer passes through the other end of the double-headed screw and abuts against the speed reduction device and is meshed through the locking nut.

6. The permanent magnet variable frequency reduction integrated machine of a scraper conveyor according to claim 1, characterized in that, Between the protective cover plate and the main terminal box body, between the wiring cavity cover plate and the wiring box body, and between the variable frequency box body cover plate and the connection box body are all fixedly connected by bolts.

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