Rolling mill screw-down device

Abstract

The utility model discloses a rolling mill screw-down device, which belongs to the technical field of rolling mills and comprises clutch boxes arranged at the top of a rolling mill frame, a worm and gear transmission mechanism is arranged in each clutch box, a worm gear in each worm and gear transmission mechanism is fixedly connected with an adjusting rod, and transmission rods are hinged to opposite sides of the two clutch boxes. The two transmission rods are connected together through a coupler, one transmission rod penetrates through a worm in the worm and gear transmission mechanism in the corresponding clutch box and can rotate respectively, and the penetrated worm extends out of the corresponding clutch box and is fixedly connected with a driven gear ring. A driving gear ring which can move along the corresponding transmission rod and is meshed with the driven gear ring is arranged at the end, away from the coupler, of the transmission rod penetrating through the worm. According to the utility model, the driving gear ring is arranged on the side surface of the rolling mill, so that the safety of workers is improved; when the driving gear ring and the driven gear ring are separated at the same time, only the driving gear ring needs to be pulled outwards, other steps are not needed, and the steps are simpler.

Description

TECHNICAL FIELD

[0001] The utility model belongs to rolling mill technical field, and specifically relates to a rolling mill screwdown device. BACKGROUND

[0002] Rolling mill is a mechanical device for realizing the rolling process of metal. It refers to the equipment for completing the whole process of rolling production, including main equipment, auxiliary equipment, hoisting and transporting equipment and auxiliary equipment, etc.

[0003] Two clutches in the rolling mill are generally connected through a shaft coupling. When the rolling mill needs to be single-rolled in the normal production process, the staff must climb to the rolling mill to separate and adjust the shaft coupling, and then single-rolling is carried out. This process is complicated and there is a major safety hazard when the staff climbs the rolling mill during production. UTILITY MODEL CONTENTS

[0004] In order to solve the problem of complicated process and major safety hazard when the staff climbs the rolling mill during production in the prior art, the utility model provides a rolling mill screwdown device. In the utility model, the staff can stand on the vertical roll to adjust when the rolling mill is single-rolled, without opening the shaft coupling. The process is simple and safe.

[0005] The utility model discloses a rolling mill screwdown device adopts the technical scheme that:

[0006] A rolling mill screwdown device comprises clutch boxes arranged on the top of the rolling mill rack through sleeves, a worm and gear transmission mechanism is arranged in the clutch box, a worm in the worm and gear transmission mechanism is fixedly connected with an adjusting rod for driving the upper roll to move up and down, characterized in that: transmission rods are hingedly connected to the opposite sides of the two clutch boxes, the two transmission rods are connected together through a shaft coupling, one of the transmission rods penetrates the worm in the worm and gear transmission mechanism in the corresponding clutch box and can rotate respectively, the penetrated worm extends to the outside of the corresponding clutch box and is fixedly connected with a driven gear ring, and the transmission rod penetrating the worm is provided with a driving gear ring which can move along the corresponding transmission rod and is engaged with the driven gear ring at the end away from the shaft coupling.

[0007] The further improvement of the utility model technical scheme is that: the other transmission rod extends into the corresponding clutch box and is fixedly connected with the worm in the corresponding worm and gear transmission mechanism, and a driving mechanism for driving the corresponding worm to rotate is arranged on the side wall of the clutch box.

[0008] The further improvement of the utility model technical scheme is that: a through hole is formed in the central position of the worm penetrated by the transmission rod, and the diameter of the through hole is greater than the diameter of the transmission rod penetrating the worm.

[0009] The further improvement of the utility model technical scheme is that: a ring-shaped handle is fixedly sleeved on the side wall of the driving gear ring through a connecting rod.

[0010] The further improvement of the technical scheme of the utility model lies in that the section of the transmission rod penetrating the worm far away from the joint is polygonal, and the driving gear ring is provided with a through hole matched with the polygon, and the driving gear ring is sleeved on the corresponding transmission rod through the through hole and can move along the transmission rod.

[0011] The further improvement of the technical scheme of the utility model lies in that the section of the transmission rod penetrating the worm far away from the joint is polygonal, and the driving gear ring is provided with a through hole matched with the polygon, and the driving gear ring is sleeved on the corresponding transmission rod through the through hole and can move along the transmission rod.

[0012] Thanks to the above technical scheme, the technical progress achieved by the utility model includes:

[0013] The joint is arranged in the utility model, so that the two transmission rods are connected into one, when the driving gear ring and the driven gear ring are connected together, the transmission rod can drive the worm and gear transmission mechanism in the two clutch boxes to rotate, so as to drive the adjusting rod to rotate, so as to adjust the height of the roller; when the driving gear ring and the driven gear ring are separated, the transmission rod can only drive the worm and gear transmission mechanism in one clutch box to rotate, while the transmission rod idles in the other clutch box, and the worm and gear transmission mechanism in the clutch box does not rotate, so that the single rolling mill is realized.

[0014] In the utility model, the driving gear ring is arranged on the side of the rolling mill, so when the driving gear ring and the driven gear ring are separated, it is only necessary to stand on the side of the rolling mill, without the need to climb the rolling mill, so as to improve the safety of the staff; at the same time, when the driving gear ring and the driven gear ring are separated, it is only necessary to pull the driving gear ring outward, without the need for other steps, so that the steps are simpler compared with the separation of the joint.

[0015] In the utility model, the diameter of the through hole is larger than the diameter of the transmission rod penetrating the worm, so the side wall of the transmission rod cannot be attached to the inner wall of the through hole, and since the outer wall of the transmission rod and the inner wall of the through hole are smooth, when there is no external force between the transmission rod and the worm, the transmission rod cannot drive the worm to rotate.

[0016] At the same time, in the utility model, the section of the transmission rod is polygonal or the guide plates are arranged on the end of the transmission rod, on the one hand, the driving gear ring can be guided when it moves, so that the driving gear ring can be inserted into the driven gear ring and engaged with the driven gear ring, without the need to rotate and adjust the driving gear ring again, so as to simplify the operation; on the other hand, the driving gear ring can be rotated when the transmission rod rotates, so as to prevent the transmission rod and the driving gear ring from slipping. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1is a structure schematic view of the mill screwdown device when the driving gear ring and the passive gear ring are separated;

[0018] Figure 2 is a structure schematic view of the mill screwdown device when the driving gear ring and the passive gear ring are engaged;

[0019] Figure 3 is Figure 1 structure schematic view of the A part in the middle;

[0020] Figure 4 is a structure schematic view of the mill screwdown device embodiment two.

[0021] In the drawings: 1, roll; 2, rack; 3, sleeve;

[0022] 4, left clutch box; 41, left transmission rod; 42, passive gear ring; 43, driving gear ring; 44, annular handle; 45, connecting rod; 46, guide plate;

[0023] 5, right clutch box; 51, right transmission rod;

[0024] 6, adjusting rod; 7, shaft coupling. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further explained in detail below by combining with specific implementation manners and referring to the drawings. In the following description, the description of known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.

[0026] Example one

[0027] Firstly refer to Figure 1 , Figure 2 and Figure 3It can be known that the embodiment comprises the racks 2 located at both ends of the roller 1, the top of each rack 2 is connected with the clutch boxes through the sleeves 3, which are the left clutch box 4 and the right clutch box 5 respectively, a set of worm and gear transmission mechanisms are arranged in each clutch box, the worm of each worm and gear transmission mechanism is fixedly connected with the vertical adjusting rod 6 (such as a screw rod, etc.), the adjusting rod 6 passes through the bottom of the corresponding clutch box, the sleeve 3 and the rack 2 downwards and is connected with the upper roller 1, the side of the left clutch box 4 facing the right clutch box 5 is hingedly connected with the left transmission rod 41, the left transmission rod 41 extends into the left clutch box 4 and penetrates the worm of the worm and gear transmission mechanism in the left clutch box 4, specifically, the worm of the worm and gear transmission mechanism in the left clutch box 4 is provided with a horizontal through hole, the diameter of the through hole is greater than the diameter of the left transmission rod 41, the left transmission rod 41 is gap-fitted with the worm of the worm and gear transmission mechanism in the left clutch box 4 through the through hole, the side of the right clutch box 5 facing the left clutch box 4 is hingedly connected with the right transmission rod 51, the right transmission rod 51 is connected with the left transmission rod 41 through the shaft coupling 7, the right transmission rod 51 extends into the right clutch box 5 and is fixedly connected with the worm of the worm and gear transmission mechanism in the right clutch box 5, and the other side of the right clutch box 5 is provided with a driving mechanism (such as a driving motor, etc.) for driving the worm of the worm and gear transmission mechanism in the right clutch box 5 to rotate.

[0028] Continuing to refer to Figure 1 , Figure 2 and Figure 3 It can be known that the worm of the worm and gear transmission mechanism in the left clutch box 4 extends to the outside of the left clutch box 4 and is fixedly connected with the passive gear ring 42 in the embodiment, meanwhile, the left transmission rod 41 penetrates the left clutch box 4 and the corresponding worm, the end of the left transmission rod 41 away from the shaft coupling 7 is provided with the driving gear ring 43 which can move along the left transmission rod 41 and can be inserted into the passive gear ring 42 and engaged with the passive gear ring 42, and the end of the left transmission rod 41 sleeved with the driving gear ring 43 is polygonal in cross section, a through hole is formed in the center of the driving gear ring 43 and matched with the above-mentioned polygonal shape.

[0029] In order to facilitate the movement of the driving gear ring 43, the outer wall of the driving gear ring 43 is fixedly connected with the annular handle 44 sleeved outside the driving gear ring 43 through the connecting rod 45.

[0030] In order to prevent the driving gear ring 43 from falling off the left transmission rod 41, the end of the left transmission rod 41 away from the shaft coupling 7 is fixedly connected with the baffle (not shown in the figure) which has a diameter greater than that of the left transmission rod 41.

[0031] The working principle of the rolling mill screwdown device is as follows: when the roll gap is adjusted, the handle is pushed to move the driving gear ring 43 towards the driven gear ring 42 until the driving gear ring 43 is inserted into the driven gear ring 42 and engaged with the driven gear ring 42, then the worm in the right clutch box 5 is driven to rotate by the driving mechanism, the right transmission rod 51 is driven to rotate, the left transmission rod 41 is driven to rotate by the rotating right transmission rod 51, and the driving gear ring 43, the driven gear ring 42 and the worm in the left clutch box 4 are driven to rotate by the rotating left transmission rod 41.

[0032] The worm in the right clutch box 5 drives the corresponding worm gear to rotate, thereby driving the corresponding adjusting rod 6 to rotate; at the same time, the worm in the left clutch box 4 drives the corresponding worm gear to rotate, thereby driving the corresponding adjusting rod 6 to rotate, and at this time, the two adjusting rods 6 rotate simultaneously to achieve the purpose of adjusting the roll gap.

[0033] When single adjustment is needed, the driving gear ring 43 is moved outward along the left transmission rod 41 to disengage the driving gear ring 43 and the driven gear ring 42, the worm in the right clutch box 5 is driven to rotate by the driving mechanism, the right transmission rod 51 is driven to rotate, the left transmission rod 41 is driven to rotate by the rotating right transmission rod 51, and the driving gear ring 43 is driven to rotate by the rotating left transmission rod 41, and since the driving gear ring 43 and the driven gear ring 42 are disengaged, the driving gear ring 43 cannot drive the driven gear ring 42 to rotate, thereby the worm gear transmission mechanism in the left clutch box 4 cannot rotate, at this time, only one side of the adjusting rod 6 rotates to achieve the purpose of single adjustment.

[0034] Embodiment two

[0035] In embodiment two, the polygon at the end of the left transmission rod 41 away from the shaft coupling 7 is changed to a circle, and a plurality of guide plates 46 are fixedly connected at the end in a circumferential direction, the length direction of each guide plate 46 is arranged along the length direction of the transmission rod, the inner wall of the driving gear ring 43 is provided with a plurality of guide grooves corresponding to the plurality of guide plates 46, and each guide groove is connected with the corresponding guide plate 46. Therefore, when the driving gear ring 43 moves to the guide plate 46, the guide plate 46 can guide the driving gear ring 43.

[0036] In the above embodiment, the rolling mill screwdown device is provided, and since the driving gear ring is arranged on the side surface of the rolling mill, when the driving gear ring and the driven gear ring are separated, the staff only needs to stand on the side surface of the rolling mill, and no need to climb the rolling mill, thereby improving the safety of the staff; and when the driving gear ring and the driven gear ring are separated, the driving gear ring only needs to be pulled outward, and no other steps are needed, and compared with separating the shaft coupling, the steps are simpler.

[0037] The above-described embodiments are merely preferred embodiments of the present application, and are not intended to limit the design concept and scope of the present application. Without departing from the design concept of the present application, various modifications and improvements to the technical solutions of the present application made by those of ordinary skill in the art shall fall within the protection scope of the present application, and the technical content of the present application claimed for protection has been entirely recorded in the claims.

Claims

1. A rolling mill screwdown device, comprising a clutch box arranged on the top of a rolling mill stand (2) through a sleeve (3), a worm and gear transmission mechanism is arranged in the clutch box, and a worm wheel in the worm and gear transmission mechanism is fixedly connected with an adjusting rod (6) driving the upper rolling mill roll (1) to move up and down, characterized in that: Two clutch boxes are hinged with transmission rods on opposite sides, the two transmission rods are connected together through a shaft coupling (7), one of the transmission rods penetrates a worm in the worm and gear transmission mechanism in the corresponding clutch box, the transmission rod penetrating the worm is in clearance fit with the penetrated worm, the penetrated worm extends to outside of the corresponding clutch box and is fixedly connected with a driven gear ring (42), the transmission rod penetrating the worm is provided at an end away from the shaft coupling (7) with a driving gear ring (43) which is movable along the corresponding transmission rod and is in mesh with the driven gear ring (42).

2. A rolling mill screwdown apparatus as defined in claim 1, characterized in that: The other transmission rod extends to the corresponding clutch box and is fixedly connected with the worm in the corresponding worm and gear transmission mechanism, and a driving mechanism for driving the corresponding worm to rotate is arranged on the side wall of the clutch box.

3. A rolling mill screwdown apparatus as defined in claim 1, characterized in that: A through hole is formed at the center of the worm penetrated by the transmission rod, and the diameter of the through hole is larger than the diameter of the transmission rod penetrating the worm.

4. A rolling mill screwdown apparatus as defined in claim 1, characterized in that: The side wall of the driving gear ring (43) is fixedly provided with an annular handle (44) through a connecting rod (45).

5. A rolling mill screwdown apparatus as claimed in any one of claims 1-4, characterized in that: The end of the transmission rod penetrating the worm away from the shaft coupling (7) is polygonal in cross section, and the driving gear ring (43) is provided with a through hole matched with the polygon, the driving gear ring (43) is sleeved on the corresponding transmission rod through the through hole and is movable along the transmission rod.

6. A rolling mill screwdown apparatus as claimed in any one of claims 1-4, characterized in that: The end of the transmission rod penetrating the worm away from the shaft coupling (7) is circumferentially provided with a plurality of guide plates (46), each guide plate (46) is arranged along the length direction of the transmission rod, and the inner wall of the driving gear ring (43) is provided with a plurality of guide grooves corresponding to the plurality of guide plates (46).

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