Safety protection device for finishing mill

Abstract

The utility model relates to the field of finishing mill protection, in particular to a safety protection device for a finishing mill, which is provided with a finishing mill body and a roller rotatably arranged in the finishing mill body. A protection mechanism is arranged on the finishing mill body, the protection mechanism comprises a fixing plate and protection plates, and a driving assembly used for driving the two protection plates to rotate is fixedly arranged on the fixing plate; the driving assembly comprises a connecting plate, a sliding plate slidably arranged on the fixing plate and a driving device used for driving the sliding plate to slide, one end of the connecting plate is fixedly arranged on the protection plate, the other end of the connecting plate is in limiting rotating connection with one end of the sliding plate, and the other end of the sliding plate is matched with the driving end of the driving device; the protective plate is switched between a closed state and an open state under the condition that the driving device drives the sliding plate to slide and the sliding plate is in limited rotating connection with the connecting plate, and the roller can be disassembled and maintained under the condition that external protection is not disassembled.

Description

Technical Field

[0001] The utility model relates to the field of protection of finishing mills, and particularly relates to a safety protection device for a finishing mill. Background Art

[0002] A finishing mill is a device for realizing the metal rolling process, generally referring to the equipment for completing the whole process of rolled material production. The finishing mill can be divided into two-roll, four-roll, six-roll, eight-roll, twelve-roll, eighteen-roll, etc. according to the number of rolls.

[0003] At present, when the existing finishing mill is in use, in order to prevent hard objects from falling onto the roll surface and damaging the equipment, the rolling mill is mostly provided with a protection device. The existing protection device covers the processing area with a protective shell. In this way, during the processing process, it can not only prevent hard objects from falling onto the roll surface and damaging the equipment, but also prevent the generated chips or other impurities from splashing to the outside and causing injury to the processing personnel. However, the existing protective shell is large in volume. When replacing or repairing the roll, the protective shell needs to be removed. Moreover, as a whole, the protective shell is large in volume, and in order to prevent the protective exterior from shaking during the protection process, the protective shell needs to be fixed. Therefore, it is very inconvenient to disassemble the protective shell. Summary of the Invention

[0004] The purpose of the utility model is to provide a safety protection device for a finishing mill, which can facilitate the disassembly and maintenance of the roll without disassembling the external protection.

[0005] The technical solution for realizing the purpose of the utility model is: the utility model has a finishing mill body and a roll rotatably arranged in the finishing mill body; a protection mechanism is arranged above the finishing mill body, and the protection mechanism includes a fixing plate fixedly arranged above the finishing mill body and protection plates rotatably arranged on both sides of the fixing plate. A driving component for driving the two protection plates to rotate is fixedly arranged on the fixing plate; the driving component includes a connecting plate, a sliding plate slidably arranged on the fixing plate, and a driving device for driving the sliding plate to slide. One end of the connecting plate is fixedly arranged on the protection plate, the other end of the connecting plate is rotationally connected with one end of the sliding plate in a limited way, the other end of the sliding plate forms a cooperation with the driving end of the driving device, and the protection plate switches between a closed state and an open state under the driving of the driving device to drive the sliding plate to slide and the limited rotational connection between the sliding plate and the connecting plate. A rolling material discharge port is formed between the two rolls. When the protection plate is in the closed state, the lowermost end of the protection plate is located above the rolling material discharge port; when the protection plate is in the open state, the lowermost end of the protection plate is located above the roll.

[0006] Furthermore, a rotating limit groove is penetratingly provided on the connecting plate. One end of the sliding plate rotatably connected to the connecting plate is rotatably arranged in the rotating limit groove, and the end of the sliding plate rotatably arranged in the rotating limit groove extends out of the rotating limit groove; the end of the sliding plate extending out of the rotating limit groove can form a limit fit with the rotating limit groove as the sliding plate slides.

[0007] Furthermore, a guiding block is fixedly provided on the fixed plate. A sliding groove for the sliding plate to be inserted into and form a sliding fit is provided on the guiding block. The extending direction of the sliding groove is consistent with the sliding direction of the sliding plate, and the sliding plate is slidably arranged on the guiding block through the sliding fit with the sliding groove.

[0008] Furthermore, a limiting component is also provided. The limiting component includes a supporting block fixedly provided on the fixed plate and a limiting block fixedly provided on the sliding plate. A through groove for the sliding plate to pass through and form a sliding fit is provided on the supporting block. The limiting block is located between the supporting block and the end of the sliding plate that forms a fit with the driving end of the driving device. The limiting block forms a limiting fit with the supporting block as the sliding plate slides, and the sliding plate is restricted from sliding on the fixed plate under the limiting fit of the limiting block and the supporting block.

[0009] Furthermore, a buffer spring is provided between the supporting block and the limiting block. One end of the buffer spring is fixedly provided on the supporting block, and the other end of the buffer spring can act on the limiting block as the sliding plate slides.

[0010] Furthermore, the transverse length of the protective plate is consistent with the axial length of the roller.

[0011] Furthermore, the driving device is a driving motor. A gear is fixedly provided on the driving end of the driving motor, and a rack that can form a transmission fit with the gear is provided on the sliding plate. The sliding plate slides through the driving of the driving end of the driving motor and the transmission fit between the gear and the rack.

[0012] Furthermore, the driving device is a telescopic cylinder. The telescopic end of the telescopic cylinder is fixedly connected to the sliding plate, and the sliding plate slides under the action of the telescopic end of the telescopic cylinder.

[0013] The utility model has positive effects: (1) The driving component of the utility model includes a connecting plate, a sliding plate slidably arranged on the fixed plate, and a driving device for driving the sliding plate to slide. The protective plate switches between the closed state and the open state under the driving of the driving device to slide the sliding plate and the limit rotational connection between the sliding plate and the connecting plate; when the protective plate is in the closed state, the protective plate protects the roller, and when the protective plate is in the open state, a replacement space is formed between the protective plate and the roller, and the staff can replace and repair the roller in the replacement space.

[0014] (2) A rotation limiting groove is provided through the connecting plate of the present utility model. One end of the sliding plate rotatably connected to the connecting plate is rotatably arranged in the rotation limiting groove, and one end of the sliding plate extending out of the rotation limiting groove can form a limiting fit with the rotation limiting groove as the sliding plate slides; under the action of the rotation limiting groove, when the sliding plate slides towards the center of the fixed plate, the sliding plate can drive the protection plate to rotate after being limited by the rotation limiting groove. Under the limiting action, the sliding plate drives the connecting plate with greater force.

[0015] (3) A guiding block is fixedly provided on the fixed plate of the present utility model. A sliding groove for the sliding plate to be inserted into and form a sliding fit is provided on the guiding block. The sliding plate is slidably arranged on the guiding block through the sliding fit with the sliding groove; the guiding block can guide the sliding of the sliding plate and prevent the sliding plate from shaking during the sliding process.

[0016] (4) The limiting component of the present utility model includes a supporting block fixedly provided on the fixed plate and a limiting block fixedly provided on the sliding plate. The sliding plate is restricted from sliding on the fixed plate under the limiting cooperation of the limiting block and the supporting block; it can prevent damage to the roller caused by over-rotation of the protection plate when the driving device is disengaged from the sliding plate, ensure the normal use of the finishing mill, and also ensure the size of the protection space formed between the protection plate and the roller.

[0017] (5) A buffer spring is provided between the supporting block and the limiting block of the present utility model. One end of the buffer spring is fixedly provided on the supporting block, and the other end of the buffer spring can act on the limiting block as the sliding plate slides; the buffer spring can reduce the hard collision between the limiting block and the supporting block, extend the service life; and reduce the amplitude of the shaking of the finishing mill caused by the limiting cooperation between the limiting block and the supporting block.

[0018] (6) The transverse length of the protection plate of the present utility model is the same as the axial length of the roller, which can protect the surface of the roller to the greatest extent. Description of the Drawings

[0019] In order to make the content of the present utility model easier to be clearly understood, the following further details the present utility model according to specific embodiments in conjunction with the drawings, where

[0020] Figure 1 is the overall structural schematic diagram of the first embodiment of the present utility model;

[0021] Figure 2 is the side view of the closed state of the protection plate in the first embodiment of the present utility model;

[0022] Figure 3 is the side view of the open state of the protection plate in the first embodiment of the present utility model;

[0023] Figure 4 isFigure 1 Partial enlarged view of A therein;

[0024] Figure 5 is Figure 1 Partial enlarged view of B therein;

[0025] Figure 6 Assembly schematic diagram of the roller of the present utility model;

[0026] Figure 7 Overall structure schematic diagram of the second embodiment of the present utility model. Specific implementation manner

[0027] (Embodiment 1)

[0028] See Figures 1 to 6 , the present utility model has a finishing mill body 1 and a roller 2 rotatably arranged in the finishing mill body 1; a protection mechanism 3 is arranged above the finishing mill body 1, and the protection mechanism 3 includes a fixing plate 31 fixedly arranged above the finishing mill body 1 and protection plates 32 rotatably arranged on both sides of the fixing plate 31. A driving assembly 4 for driving the two protection plates 32 to rotate is fixedly arranged on the fixing plate 31; the driving assembly 4 includes a connecting plate 41, a sliding plate 42 slidably arranged on the fixing plate 31, and a driving device 43 for driving the sliding plate 42 to slide. One end of the connecting plate 41 is fixedly arranged on the protection plate 32, the other end of the connecting plate 41 is rotatably and limit-connected to one end of the sliding plate 42, and the other end of the sliding plate 42 forms a cooperation with the driving end of the driving device 43. The protection plate 32 is switched between a closed state and an open state under the driving of the driving device 43 to drive the sliding plate 42 to slide and the limit rotation connection between the sliding plate 42 and the connecting plate 41. A rolling material discharge port 21 is formed between the two rollers 2. When the protection plate 32 is in the closed state, a protection space is formed between the protection plate 32 and the roller 2, and the lowermost end of the protection plate 32 is located above the rolling material discharge port 21; when the protection plate 32 is in the open state, a replacement space is formed between the protection plate 32 and the roller 2, and the lowermost end of the protection plate 32 is located above the roller 2.

[0029] A rotation limit groove 411 is formed through the connecting plate 41. One end of the sliding plate 42 rotatably connected to the connecting plate 41 is rotatably arranged in the rotation limit groove 411, and one end of the sliding plate 42 rotatably arranged in the rotation limit groove 411 extends out of the rotation limit groove 411; one end of the sliding plate 42 extending out of the rotation limit groove 411 can form a limit cooperation with the rotation limit groove 411 as the sliding plate 42 slides.

[0030] A guiding block 311 is fixedly arranged on the fixed plate 31. A chute is arranged on the guiding block 311, into which the sliding plate 42 can be snapped to form a sliding fit. The extending direction of the chute is consistent with the sliding direction of the sliding plate 42. The sliding plate 42 is slidably arranged on the guiding block 311 through the sliding fit with the chute.

[0031] A limiting component 5 is further provided. The limiting component 5 includes a supporting block 51 fixedly arranged on the fixed plate 31 and a limiting block 52 fixedly arranged on the sliding plate 42. A through groove is arranged on the supporting block 51 through which the sliding plate 42 can pass and form a sliding fit. The limiting block 52 is located between the supporting block 51 and the end of the sliding plate 42 that forms a fit with the driving end of the driving device 43. The limiting block 52 forms a limiting fit with the supporting block 51 as the sliding plate 42 slides. The sliding plate 42 is restricted from sliding on the fixed plate 31 under the limiting fit of the limiting block 52 and the supporting block 51.

[0032] A buffer spring 6 is arranged between the supporting block 51 and the limiting block 52. One end of the buffer spring 6 is fixedly arranged on the supporting block 51, and the other end of the buffer spring 6 can act on the limiting block 52 as the sliding plate 42 slides.

[0033] The transverse length of the protection plate 32 is consistent with the axial length of the roller 2.

[0034] The driving device 43 is a driving motor 7. A gear 71 is fixedly arranged on the driving end of the driving motor 7. A rack 421 that can form a transmission fit with the gear 71 is arranged on the sliding plate 42. The sliding plate 42 slides through the driving of the driving end of the driving motor 7 and the transmission fit between the gear 71 and the rack 421.

[0035] (Embodiment 2)

[0036] See Figure 7 , in the present utility model, the driving device 43 is a telescopic cylinder 8. The telescopic end of the telescopic cylinder 8 is fixedly connected to the sliding plate 42. The sliding plate 42 slides under the action of the telescopic end of the telescopic cylinder 8.

[0037] The remaining technical features are the same as those in Embodiment 1.

[0038] The working principle of the present utility model: The driving end of the driving motor 7 drives the gear 71 to rotate. The gear 71 forms a transmission fit with the rack 421 to drive the sliding plate 42 to slide towards the center of the fixed plate 31. The sliding plate 42 can drive the protection plate 32 to rotate by pulling the connecting plate 41 after being limited by the rotation limiting groove 411. At this time, the protection plate 32 is in an open state. Stopping the driving of the driving motor 7 makes the protection plate 32 hover. Workers can enter the replacement space between the protection plate 32 and the roller 2 to repair and replace the roller 2.

[0039] After the replacement is completed, the driving end of the driving motor 7 drives the gear 71 to rotate. The gear 71 forms a transmission fit with the rack 421, driving the sliding plate 42 to slide towards the side of the fixed plate 31. After the sliding plate 42 loses the limiting fit of the rotation limiting groove 411, it can pull the protection plate 32 to rotate through the connecting plate 41 until the limiting block 52 touches the supporting block 51, and then stop the driving of the driving motor 7. At this time, the protection plate 32 is in a closed state, and the protection plate 32 shields the debris generated by the material rolled by the roller 2 during precision rolling;

[0040] The driving of the driving motor 7 can also be realized by a telescopic cylinder 8. The telescopic cylinder 8 is used to drive the sliding plate 42 to slide.

[0041] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present utility model. It should be understood that the above are only specific embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A safety protection device for a finishing mill, comprising a finishing mill body (1) and two rollers (2) rotatably arranged in the finishing mill body (1); characterized in that: Above the finishing mill body (1), there is a protection mechanism (3). The protection mechanism (3) includes a fixing plate (31) fixedly arranged above the finishing mill body (1) and protection plates (32) rotatably arranged on both sides of the fixing plate (31). A driving component (4) for driving the two protection plates (32) to rotate is fixedly arranged on the fixing plate (31); the driving component (4) includes a connecting plate (41), a sliding plate (42) slidably arranged on the fixing plate (31), and a driving device (43) for driving the sliding plate (42) to slide. One end of the connecting plate (41) is fixedly arranged on the protection plate (32), the other end of the connecting plate (41) is rotationally and limitedly connected to one end of the sliding plate (42), and the other end of the sliding plate (42) forms a cooperation with the driving end of the driving device (43). The protection plate (32) switches between a closed state and an open state under the driving of the driving device (43) to drive the sliding plate (42) to slide and the rotational and limited connection between the sliding plate (42) and the connecting plate (41); a rolling material discharge port (21) is formed between the two rollers (2). When the protection plate (32) is in the closed state, the lowermost end of the protection plate (32) is located above the rolling material discharge port (21); when the protection plate (32) is in the open state, the lowermost end of the protection plate (32) is located above the roller (2).

2. The safety protection device for a finishing mill according to claim 1, characterized in that: A rotational limit groove (411) runs through the connecting plate (41). One end of the sliding plate (42) rotatably connected to the connecting plate (41) is rotatably arranged in the rotational limit groove (411), and one end of the sliding plate (42) rotatably arranged in the rotational limit groove (411) extends out of the rotational limit groove (411); one end of the sliding plate (42) extending out of the rotational limit groove (411) can form a limit cooperation with the rotational limit groove (411) as the sliding plate (42) slides.

3. A safety protection device for a finishing mill according to claim 1, characterized in that: A guiding block (311) is fixedly arranged on the fixing plate (31). The guiding block (311) is provided with a sliding groove into which the sliding plate (42) can be inserted to form a sliding cooperation. The extending direction of the sliding groove is the same as the sliding direction of the sliding plate (42). The sliding plate (42) is slidably arranged on the guiding block (311) through the sliding cooperation with the sliding groove.

4. The safety protection device for a finishing mill according to claim 1, characterized in that: A limit component (5) is also provided. The limit component (5) includes a supporting block (51) fixedly arranged on the fixing plate (31) and a limit block (52) fixedly arranged on the sliding plate (42). The supporting block (51) is provided with a through groove through which the sliding plate (42) can pass and form a sliding cooperation. The limit block (52) is located between the supporting block (51) and one end of the sliding plate (42) that forms a cooperation with the driving end of the driving device (43). The limit block (52) forms a limit cooperation with the supporting block (51) as the sliding plate (42) slides, and the sliding of the sliding plate (42) on the fixing plate (31) is restricted under the limit cooperation between the limit block (52) and the supporting block (51).

5. The safety protection device for a finishing mill according to claim 4, wherein: A buffer spring (6) is provided between the support block (51) and the limit block (52). One end of the buffer spring (6) is fixedly arranged on the support block (51), and the other end of the buffer spring (6) can act on the limit block (52) as the sliding plate (42) slides.

6. The safety protection device for a finishing mill according to claim 1, wherein: The transverse length of the protection plate (32) is consistent with the axial length of the roller (2).

7. A safety protection device for a finishing mill according to claim 1, characterized in that: The driving device (43) is a driving motor (7). A gear (71) is fixedly arranged on the driving end of the driving motor (7). A rack (421) that can form a transmission fit with the gear (71) is arranged on the sliding plate (42). The sliding plate (42) slides through the driving of the driving end of the driving motor (7) and the transmission fit between the gear (71) and the rack (421).

8. The safety protection device for a finishing mill according to claim 1, characterized in that: The driving device (43) is a telescopic cylinder (8). The telescopic end of the telescopic cylinder (8) is fixedly connected to the sliding plate (42). The sliding plate (42) slides under the action of the telescopic end of the telescopic cylinder (8).

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