An electromagnetic clutch combined roll force control system

Abstract

The present invention discloses an electromagnetic clutch combined roll gap control system, which includes a transmission unit, a clutch control unit and an operation unit; the transmission unit is connected and cooperated with the operation unit through the clutch control unit; the clutch connection control unit includes a clutch connection controller and a control board arranged on any one of the horizontal sides of the clutch connection controller, and a carbon brush, an independent power supply block and a wire for connecting the carbon brush and the independent power supply block are further arranged on the control board; it solves the technical problems such as easy wear of the carbon brush, frequent replacement, danger during the replacement process and motor burnout caused by poor contact, and achieves quite excellent practical effects.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic clutch combined screwdown control systems, and particularly to an electromagnetic control clutch coupling. Background Art

[0002] In an electro-hydraulic combined screwdown control system, the function of the electric screwdown is mainly to execute the position movement, and the function of the hydraulic screwdown is mainly to perform real-time roll gap adjustment. The electric screwdown control relies on two screwdown motors on the drive side and the operator side for transmission, and the synchronous position movement of the two screwdown motors on both sides is achieved by a screwdown clutch. The operation of the screwdown clutch is adjusted by a "disengagement" and "engagement" connection controller. The original "disengagement" and "engagement" connection controller has the following disadvantages: ① Poor synchronism: The main function of the screwdown clutch is to enable the screwdown motors on both sides to achieve unilateral independent position movement and bilateral combined position movement. When the screwdown clutch is disengaged, the screwdown motors move independently; when the screwdown clutch is engaged, the two screwdown motors on both sides achieve combined position movement. Since the original connection controller is not installed on the same level, the carbon brushes on the connection controller are in poor contact, resulting in the screwdown clutch being unable to accurately "disengage" and "engage", and the synchronism of the screwdown position movement is greatly reduced. ② Poor stability: The original screwdown "disengagement" and "engagement" connection controller only has a set of carbon brushes, and they are ordinary graphite carbon brushes. The connection controller frequently rubs the carbon brushes during the steel rolling process, causing the carbon brushes to be worn even when not working, and the contact part is prone to sparking, resulting in poor operating stability of the screwdown clutch. ③ High maintenance risk: The original connection controller is attached to the screwdown motor. When maintaining the connection controller, it is necessary to stand above the screwdown motor to operate, with a high risk factor. During regular maintenance and replacement of the screwdown motor, the screwdown clutch and the connection controller need to be removed; when replacing the screwdown clutch, the connection controller also needs to be removed first, increasing the difficulty for maintenance personnel. Summary of the Invention

[0003] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. In this part, as well as in the abstract and title of the specification of this application, some simplifications or omissions may be made to avoid obscuring the purpose of this part, the abstract of the specification, and the title of the invention, but such simplifications or omissions shall not be used to limit the scope of the present invention.

[0004] In view of the problems existing in the above-mentioned existing electromagnetic clutch combined screwdown control system, the present invention is proposed.

[0005] Therefore, the purpose of the present invention is to provide an electromagnetic clutch combined screwdown control system.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: a transmission unit, a clutch control unit, and an operation unit; the transmission unit is connected and cooperated with the operation unit through the clutch control unit; the clutch connection control unit includes a clutch connection controller and a control board disposed on any one of the horizontal sides of the clutch connection controller. A carbon brush, an independent power supply block, and a wire for connecting the carbon brush and the independent power supply block are further disposed on the control board.

[0007] As a preferred embodiment of the electromagnetic clutch combined pressure control system of the present invention, wherein: both end faces of the clutch connection controller are respectively connected to the transmission unit and the operation unit.

[0008] As a preferred embodiment of the electromagnetic clutch combined pressure control system of the present invention, wherein: a plurality of friction plates are provided on the clutch connection controller, and a certain distance is provided between the friction plates. When energized, the friction plates will fit together, and in the non-energized state, the friction plates will not fit; an annular groove is provided on the surface of the clutch connection controller to cooperate with the carbon brush.

[0009] As a preferred embodiment of the electromagnetic clutch combined pressure control system of the present invention, wherein: bolt holes arranged vertically are provided on the surface of the control board, fastening bolts are arranged in the bolt holes, the control board is connected to the mother board through the fastening bolts, and the mother board is fixedly connected to the bottom board through a connecting member. The shape of one side of the control board where the carbon brush is installed is a circular arc that fits the clutch connection controller, and the radian is slightly larger than the clutch connector.

[0010] As a preferred embodiment of the electromagnetic clutch combined pressure control system of the present invention, wherein: the mother board is connected to the mother board fixing frame through long bolts, and several groups of fixing bolts are further provided on the bottom board.

[0011] As a preferred embodiment of the electromagnetic clutch combined pressure control system of the present invention, wherein: the transmission unit and the clutch connection controller are connected by a flange, and the operation unit and the clutch connection controller are connected by a flange.

[0012] As a preferred embodiment of the electromagnetic clutch combined pressure control system of the present invention, wherein: the transmission unit includes a transmission side motor, a transmission side pressure reduction mechanical device, and a transmission shaft connecting the transmission side motor and the transmission side pressure reduction mechanical device. The transmission shaft is connected to the clutch connection controller through a flange.

[0013] As a preferred embodiment of the electromagnetic clutch combined screwdown control system of the present invention, the operation unit includes an operation-side motor, an operation-side screwdown mechanical device, and an operation shaft connecting the operation-side motor and the operation-side screwdown mechanical device. The operation shaft is connected to the clutch connection controller through a flange.

[0014] As a preferred embodiment of the electromagnetic clutch combined screwdown control system of the present invention, the drive-side screwdown mechanical device includes a first screwdown motor, a first screwdown screw, and a first lower pressing block arranged on the first screwdown screw. The operation-side screwdown mechanical device includes a second screwdown motor, a second screwdown screw, and a second lower pressing block arranged on the second screwdown screw.

[0015] Advantages of the present invention:

[0016] 1. The present invention adopts a split design of the connection controller and the screwdown clutch, making the contact between the carbon brush and the screwdown clutch reliable and improving the synchronization of the screwdown movement.

[0017] 2. The present invention uses copper composite carbon brushes to replace ordinary graphite carbon brushes and installs multiple groups of carbon brushes, reducing carbon brush wear and improving the stability of the connection controller.

[0018] 3. The present invention designs two groups of carbon brush controllers, which work on the inner and outer slide rails of the screwdown clutch respectively, thereby improving the stability of the connection controller and the screwdown clutch. Taking the finishing screwdown control system as an example, during each roll change and calibration, the electric screwdown needs to move repeatedly, affecting the calibration time, and about 10 groups of carbon brushes need to be replaced every week; after adopting a reliable type "separation" and "connection" connection controller in 2009, only one electric movement is required for each roll change to complete the calibration; the frequency of carbon brush replacement has decreased significantly, and one to two groups of carbon brushes are replaced every quarter.

[0019] 4. The present invention adopts an independent installation of the connection controller, making the screwdown motor, the screwdown clutch, and the connection controller independent of each other. When maintaining a certain device, it is not necessary to remove other devices, reducing the maintenance intensity and the risk coefficient of maintenance operations.

[0020] 5. By installing the carbon brush positions on the left and right sides of the clutch connection controller, the present invention effectively avoids the poor contact between the carbon brush and the clutch connection controller caused by the up and down vibrations brought by the mechanical screwdown devices on both sides, thus solving the phenomenon of motor burnout caused by unstable motor power on both sides. Brief Description of the Drawings

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments 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. Among them:

[0022] Figure 1 It is a schematic diagram of the overall structure of the electromagnetic clutch combined screwdown control system of the present invention.

[0023] Figure 2 It is a schematic diagram of the structure of the clutch control unit of the electromagnetic clutch combined screwdown control system of the present invention.

[0024] Figure 3 It is a schematic diagram of the structure of the control board of the electromagnetic clutch combined screwdown control system of the present invention.

[0025] Figure 4 It is a schematic diagram of the structure of the clutch control unit of the electromagnetic clutch combined screwdown control system of the present invention.

[0026] Figure 5 It is a schematic diagram of the structure of the transmission unit of the electromagnetic clutch combined screwdown control system of the present invention.

[0027] Figure 6 It is a schematic diagram of the structure of the operation unit of the electromagnetic clutch combined screwdown control system of the present invention. Specific Embodiments

[0028] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will make a detailed description of the specific embodiments of the present invention with reference to the accompanying drawings of the specification.

[0029] In the following description, many specific details are set forth to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0030] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that can be included in at least one implementation manner of the present invention. The "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selectively exclusive embodiment from other embodiments.

[0031] Next, the present invention will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present invention in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally in a non-general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0032] Embodiment 1

[0033] Refer to Figures 1 to 3 , a schematic diagram of the overall structure of an electromagnetic clutch combined with a roll force control system is provided, as shown in Figure 1 , an electromagnetic clutch combined with a roll force control system includes a transmission unit 100, a clutch control unit 200, and an operation unit 300.

[0034] Specifically, the main structure of the present invention includes a transmission unit 100 and a clutch control unit 200 for connecting the operation unit 300. The transmission unit 100 and the operation unit 300 will perform a roll force operation at the same frequency under the control of the clutch control unit 200. When the clutch control unit 200 is closed, the transmission unit 100 and the operation unit 300 can independently complete the roll force operation, and the frequencies can be different.

[0035] Furthermore, the clutch control unit 200 mainly serves to connect the transmission unit 100 and the operation unit 300, so that the two reach the same motor power and the same roll force frequency. The clutch control unit 200 includes a clutch connection controller 201 and a control board 202 installed on the left or right side of the clutch connection controller 201. An independent power supply block 202b is fixedly installed on the surface of the control board 202 by bolts. A wire 202c is led out from the independent power supply block 202b and connected to a carbon brush 202a. The carbon brush 202a is installed on the side close to the clutch connection controller 201, and the independent power supply block 202b is installed on the other side of the control board 201. The independent power supply block 202b is an external power supply column, which can be connected to an independent power supply system, directly connected to a DC 24V power supply, and can supply power to the carbon brush 202a through the wire 202c to make the carbon brush 202a charged. The carbon brush 202a is a copper composite carbon brush, and two groups are provided, which can effectively reduce the wear of the carbon brush 202a and improve the stability of the clutch connection controller 201.

[0036] The present invention designs two sets of carbon brush controllers, which work on the inner slide rail and the outer slide rail of the pressing clutch respectively, so as to improve the stability of the connection controller and the pressing clutch. Taking the finishing mill screw down control system as an example, during each roll change calibration, the electric screw down needs to move repeatedly, which affects the calibration time. About 10 sets of carbon brushes need to be replaced every week; after adopting the reliable "separation" and "connection" connection controller in 2009, only one electric movement is required for each roll change to complete the calibration; the frequency of carbon brush replacement has decreased significantly, and only one or two sets of carbon brushes need to be replaced every quarter.

[0037] Comparison of the cumulative number of carbon brush replacements before and after improvement

[0038]

[0039] Embodiment 2

[0040] Refer to Figures 1 to 6 In this embodiment, which is different from the first embodiment, a plurality of friction plates 203 are arranged on the clutch connection controller 201, and a certain distance is arranged between the friction plates 203. When electrified, the friction plates 203 will fit together, and in the non-electrified state, the friction plates 203 will not fit; a circular groove 201a is arranged on the surface of the clutch connection controller 201 to cooperate with the carbon brush 202a.

[0041] Vertical bolt holes 202d are arranged on the surface of the control board 202, and fastening bolts 202e are arranged in the bolt holes 202d. The control board 202 is connected to the mother board 204 through the fastening bolts 202e. The mother board 204 is fixedly connected to the bottom board 206 through a connecting member 205. The shape of one side of the control board 202 where the carbon brush 202a is installed is an arc that fits the clutch connection controller 201.

[0042] The mother board 204 is connected to the mother board fixing frame 207 through long bolts 204a, and a number of sets of fixing bolts 206a are also arranged on the bottom board 206.

[0043] The transmission unit 100 and the clutch connection controller 201 are connected by a flange, and the operation unit 300 and the clutch connection controller 201 are connected by a flange.

[0044] The transmission unit 100 includes a drive side motor 101, a drive side screw down mechanical device 102, and a transmission shaft 103 connecting the drive side motor 101 and the drive side screw down mechanical device 102. The transmission shaft 103 is connected to the clutch connection controller 201 through a flange.

[0045] The operation unit 300 includes an operation-side motor 301, an operation-side screw-down mechanism 302, and an operation shaft 303 connecting the operation-side motor 301 and the operation-side screw-down mechanism 302. The operation shaft 303 is connected to the clutch coupling controller 201 through a flange.

[0046] The drive-side screw-down mechanism 102 includes a first screw-down motor 102a, a first screw-down screw 102b, and a first lower pressing block 102c provided on the first screw-down screw 102b. The operation-side screw-down mechanism 302 includes a second screw-down motor 302a, a second screw-down screw 302b, and a second lower pressing block 302c provided on the second screw-down screw 302b.

[0047] Specifically, five groups of friction plates 203 are provided on the outer ring of the clutch coupling controller 201. When the carbon brush is not energized, there is a certain gap between the friction plates 203. Therefore, the clutch coupling controller 201 cannot connect the drive unit 100 and the operation unit 300. When the friction plates 203 are electrified, the friction plates 203 will be magnetic, and then they will attract and fit with each other, so that the whole clutch coupling controller 201 is conducted, enabling the drive unit 100 and the operation unit 300 to achieve the same power through adjustment, effectively ensuring the power consistency on both sides and achieving the consistency of the pressing frequency of the mechanical screw-down device.

[0048] A ring-shaped groove 201a is also provided on the surface of the clutch coupling controller 201. The groove 201a is used for contact connection with the carbon brush 202a, which limits the carbon brush 202a and ensures the effective contact between the carbon brush 202a and the clutch coupling controller 201a.

[0049] Furthermore, on the left side of the control board 202, that is, on the side where the independent power supply block 202b is installed, four groups of bolt holes 202d are opened. The bolt holes 202d are in the shape of long ellipses, and two groups are arranged vertically above and below the independent power supply block 202b. The control board 202 is connected and fixed to the mother board 204 through fastening bolts 202e passing through the bolt holes 202d. Therefore, when the fastening bolts 202d are not tightened, the contact area between the carbon brush 202a and the clutch coupling controller 201 can be changed by horizontally moving the control board 202, effectively reducing the wear rate of the carbon brush 202a. And through this setting, during the process of replacing the carbon brush 202a, the control board 202 can be removed by disassembling the fastening bolts 202d, and the carbon brush 202a can be replaced in a relatively safe environment, effectively ensuring the safety of maintenance staff and having quite high convenience.

[0050] Furthermore, the side of the control board 202 close to the clutch connection controller 201 is arc-shaped, which can better ensure the fit between the carbon brush 202a and the clutch connection controller 201. The mother board 204 connected to the control board 201 is connected to the fixed mother board fixing frame 207 by two long bolts 204a, and the mother board fixing frame 207 can ensure that the control board 202 can be installed in a relatively appropriate position. Similarly, a right-angled connector 205 is provided at the lower end of the mother board 204. One end of the connector 205 fits on the mother board 204 and is fixed by bolts, and the other end fits on the bottom board 206 and is also fixed by bolts. The connector 205 mainly plays a role in connecting the mother board 204 and the bottom board 206, effectively ensuring the stability of the control board 202 on the mother board 204. A set of fixing bolts 206a is provided at each of the four corners of the surface of the bottom board 206, and through the fixing bolts 206a, an effect of fixing in a suitable position can be achieved.

[0051] The drive unit 100 includes a drive-side motor 101, a drive-side screw-down device 102, and a transmission shaft 103 that connects them and is flange-connected to the left end face of the clutch connection controller 201. The operation unit 300 includes an operation-side motor 301, an operation-side screw-down device 302, and an operation shaft 303 that connects them and is flange-connected to the right end face of the clutch connection controller 201; the drive-side motor 101 and the operation-side motor 301 use the same type of MDX14 / 62 power 149KW DC motor to drive the screw-down device. The two screw-down devices on both sides have the same structure and are both composed of a screw-down screw and a lower pressing block. The lower pressing block is arranged in a disc shape around the screw-down screw.

[0052] The core working principle and process of the present invention are as follows: The working process of the electromagnetic clutch combined screw-down control system is to provide a stable clutch coil power path to the clutch connection controller to achieve reliable control of the two working states of the clutch, "engagement" and "disengagement". The mill screw-down is divided into a drive side and an operation side, and two DC motors of model MDX14 / 62 with a power of 149KW are used to drive the screw-down mechanical device on the drive side and the operation side. When the control instruction requires the roll gaps on both sides to move synchronously, the clutch coupler is connected to DC 24V, the clutch is engaged, the friction plate group is tightened, and the two motors on the operation side and the drive side are controlled to work simultaneously. The two motors run coaxially. At this time, the powers on both sides are adjusted to be consistent; when the clutch is powered off, the clutch is released, and under the spring action of the outer friction plate, the inner and outer friction plates are separated, and its control is in the single-action mode. According to the roll gap difference, the instruction realizes the split-axis operation of the motors on the operation side and the drive side. To achieve the above two control methods, only through the clutch connection controller can the pre-swing roll gap of the drive side and the operation side of the electric screw-down be leveled.

[0053] Importantly, it should be noted that the construction and arrangement of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible without materially departing from the novel teachings and advantages of the subject matter described in this application (for example, changes in the size, scale, structure, shape and proportion of various elements, as well as parameter values (such as temperature, pressure, etc.), installation arrangements, use of materials, colors, orientations, etc.). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature, number or position of discrete elements may be altered or changed. Accordingly, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structures that perform the recited function herein, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Accordingly, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0054] In addition, in order to provide a concise description of the exemplary embodiments, not all features of the actual embodiments may be described (i.e., those features that are not relevant to the currently contemplated best mode of carrying out the present invention or those features that are not relevant to the implementation of the present invention).

[0055] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous specific implementation decisions may be made. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, without undue experimentation, such development efforts will be a routine task of design, manufacturing and production.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention may be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. An electromagnetic clutch combined with a roll gap control system, characterized in that: including a transmission unit (100), a clutch control unit (200), and an operation unit (300); the transmission unit (100) is connected and cooperates with the operation unit (300) through the clutch control unit (200); the clutch connection control unit (200) includes a clutch connection controller (201) and a control board (202) disposed on either side of the horizontal sides of the clutch connection controller (201). A carbon brush (202a), an independent power supply block (202b), and a wire (202c) for connecting the carbon brush (202a) and the independent power supply block (202b) are further disposed on the control board (202); both end faces of the clutch connection controller (201) are respectively connected to the transmission unit (100) and the operation unit (300); a plurality of friction plates (203) are disposed on the clutch connection controller (201). A certain distance is provided between the friction plates (203). When energized, the friction plates (203) will fit together. In the non-energized state, the friction plates (203) will not fit; an annular groove (201a) is disposed on the surface of the clutch connection controller (201) to cooperate with the carbon brush (202a); bolt holes (202d) arranged vertically are disposed on the surface of the control board (202). A fastening bolt (202e) is disposed in the bolt holes (202d). The control board (202) is connected to the mother board (204) through the fastening bolt (202e). The mother board (204) is fixedly connected to the bottom board (206) through a connector (205). One side of the control board (202) where the carbon brush (202a) is installed is shaped as a circular arc that fits the clutch connection controller (201), and the radian is slightly larger than that of the clutch (201); the mother board (204) is connected to the mother board fixing frame (207) through a long bolt (204a). A plurality of groups of fixing bolts (206a) are further disposed on the bottom board (206); the transmission unit (100) and the clutch connection controller (201) are connected by a flange, and the operation unit (300) and the clutch connection controller (201) are connected by a flange; the transmission unit (100) includes a transmission-side motor (101), a transmission-side pressing mechanical device (102), and a transmission shaft (103) connecting the transmission-side motor (101) and the transmission-side pressing mechanical device (102). The transmission shaft (103) is connected to the clutch connection controller (201) through a flange; the operation unit (300) includes an operation-side motor (301), an operation-side pressing mechanical device (302), and an operation shaft (303) connecting the operation-side motor (301) and the operation-side pressing mechanical device (302). The operation shaft (303) is connected to the clutch connection controller (201) through a flange; The drive side screw-down mechanical device (102) includes a first screw-down motor (102a), a first screw-down screw (102b), and a first lower pressing block (102c) provided on the first screw-down screw (102b). The operating side screw-down mechanical device (302) includes a second screw-down motor (302a), a second screw-down screw (302b), and a second lower pressing block (302c) provided on the second screw-down screw (302b). The bolt holes (202d) are long oval-shaped, perpendicular to the independent power supply block (202b), and two sets are provided at the upper and lower parts respectively. One end of the connecting member (205) is bolted to the mother board (204), and the other end is bolted to the bottom board (206).

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