Roll gap adjusting device of high-speed wire rod finishing mill

Abstract

The utility model provides a roll gap adjusting device of a high-speed wire rod finishing mill, which comprises an adjusting lead screw used for adjusting the position of a roll shaft of the finishing mill, and is characterized by further comprising an adjusting middle shaft, and the adjusting middle shaft is matched with the adjusting lead screw through a gear set; the adjusting middle shaft is rotationally arranged in the fixed shell, and the fixed shell is fixed on the roller box through a bolt; the end part of the adjusting middle shaft is rectangular and extends out of the outer side of the fixed shell, the end part of the adjusting middle shaft is sleeved with a positioning sleeve II, and a gear III is arranged outside the positioning sleeve II; a positioning column is arranged on the fixed shell, a positioning gear is fixedly arranged on the positioning column, and the positioning gear is matched with the gear III. The structure has the self-locking, dustproof and waterproof functions, roll gap adjustment is accurate, stable and reliable, a rolled piece obtains stable and lasting clamping force in the conveying process, and compared with an original structure, installation is convenient and firm, replacement is easy, and roll gap adjustment operation is easy and convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of rolling equipment, and particularly relates to a roll gap adjusting device for a high-speed wire rod finishing mill. Background Art

[0002] In a high-speed wire rod hot rolling production line, the wire diameter of the wire rod is controlled by roll rings. Each group of roll rings has two, which are oppositely arranged on the roll shafts of the roll box. Grooves matching the wire rod are arranged on the ring surfaces of the roll rings, which are usually called pass profiles. During the production process, when the wire diameter of the wire rod changes, the gap between the two roll rings needs to be adjusted. The roll gap adjusting device for the finishing mill is a process equipment used to adjust the roll gap between the pass profiles of the roll rings installed on the roll shafts of the roll box of the high-speed wire rod finishing mill.

[0003] In the existing roll gap adjusting device for the finishing mill, an adjusting lead screw is arranged on the roll box. The nut of the adjusting lead screw is matched with one of each group of roll rings. The adjusting lead screw is rotationally matched with the roll box and the head of the lead screw extends out of the roll box for manual adjustment. In the existing adjusting device, manual twisting of the lead screw is laborious and the adjustment accuracy is poor. At the same time, the existing lead screw has no locking function. After the roll rings are adjusted, under the action of external force and vibration, the position is likely to change, increasing the frequency of manual adjustment and affecting the stability of product quality. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a roll gap adjusting device for a high-speed wire rod finishing mill to solve the problems in the prior art.

[0005] The utility model is realized by the following technical scheme: A roll gap adjusting device for a high-speed wire rod finishing mill includes an adjusting lead screw for adjusting the position of the roll shaft of the finishing mill, and is characterized in that: it further includes an adjusting middle shaft, and the adjusting middle shaft is matched with the adjusting lead screw through a gear set;

[0006] The adjusting middle shaft is rotatably arranged in a fixed housing, and the fixed housing is fixed on the roll box by bolts; the end of the adjusting middle shaft is polygonal and extends out of the outside of the fixed housing. A positioning sleeve II is sleeved on the end of the adjusting middle shaft.

[0007] A gear III is arranged outside the positioning sleeve II; a positioning column is arranged on the fixed housing, and a positioning gear is fixedly arranged on the positioning column, and the positioning gear is matched with the gear III.

[0008] Further: An external gland is arranged on the fixed housing.

[0009] Further: The gear set includes a gear I arranged on the adjusting middle shaft and a gear II arranged on the adjusting lead screw, and the gear I and the gear II are meshed and matched.

[0010] Further: The number of teeth of the gear I is less than the number of teeth of the gear II.

[0011] The beneficial effects of the present utility model are as follows: This structure has the functions of self-locking, dust-proof, and waterproof, and the roll gap adjustment is accurate, stable, and reliable, enabling the rolled piece to obtain a stable and lasting clamping force during the conveying process. Compared with the original structure, it is convenient and firm to install, simple to replace, and easy to operate the roll gap adjustment. The gears used for the roll gap of the finishing mill and the gears in the box body adopt a split structure, which is convenient for off-line maintenance and assembly, improves the maintenance efficiency, reduces the maintenance cost, and thus ensures the product quality during the roll ring rolling process, with good effects and remarkable economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is the schematic axonometric main structure diagram of the present utility model;

[0013] Figure 2 is the schematic axonometric structure diagram of the adjustment mechanism of the present utility model;

[0014] Figure 3 is the schematic axonometric structure diagram of the gear rotation mechanism of the present utility model;

[0015] Figure 4 is the schematic axonometric diagram of the self-locking device of the adjustment mechanism of the present utility model;

[0016] Figure 5 is the schematic three-dimensional diagram of the adjustment mechanism of the present utility model;

[0017] Figure 6 is the schematic three-dimensional diagram of the self-locking device of the adjustment mechanism of the present utility model;

[0018] Figure 7 is the schematic axonometric view structure diagram of the adjustment mechanism of the present utility model;

[0019] Figure 8 is the schematic axonometric view structure diagram of the self-locking device of the adjustment mechanism of the present utility model;

[0020] Figure 9 is the schematic axonometric view structure diagram of the gear rotation mechanism of the present utility model;

[0021] Figure 10 is the schematic diagram of the adjustment mechanism of the present utility model.

[0022] Wherein: 1 - adjustment central axis, 2 - outer gland, 3 - adjustment bolt, 4 - fixed housing, 5 - deep groove ball bearing I, 6 - roll box housing, 7 - skeleton seal, 8 - bolt I, 9 - lead screw positioning sleeve, 10 - gear I, 11 - deep groove ball bearing II, 12 - cone box housing, 13 - asbestos gasket, 14 - fixed key I, 15 - gear II, 16 - fixed key II, 17 - adjustment lead screw, 18 - angular contact ball bearing, 19 - gland, 20 - positioning sleeve I, 21 - bolt II, 22 - gear III, 23 - positioning post, 24 - positioning sleeve II, 25 - positioning gear. Specific embodiments

[0023] Such as Figure 1-10 As shown in the figure, a roll gap adjustment device for a high-speed wire rod finishing mill with the structure of the present utility model includes an adjustment lead screw 17 for adjusting the position of the roll shaft of the finishing mill, and further includes an adjustment central axis 1, and the adjustment central axis 1 and the adjustment lead screw 17 are cooperated through a gear set;

[0024] The adjustment central axis 1 is rotatably arranged in the fixed housing 4, and the fixed housing is fixed on the roll box by bolts; the end of the adjustment central axis 1 is rectangular and extends outside the fixed housing 4, and a positioning sleeve II 24 is sleeved on the end of the adjustment central axis 1,

[0025] A gear III 22 is arranged outside the positioning sleeve II 24; a positioning post 23 is arranged on the fixed housing 4, and a positioning gear 25 is fixedly arranged on the positioning post 23, and the positioning gear 25 is cooperated with the gear III 22.

[0026] Preferably: an outer gland 2 is arranged on the fixed housing 4.

[0027] Preferably: the gear set includes a gear I 10 arranged on the adjustment central axis 1 and a gear II 15 arranged on the adjustment lead screw 17, and the gear I 10 and the gear II 15 are meshed and cooperated. And the number of teeth of the gear I is less than the number of teeth of the gear II.

[0028] The following further illustrates the present solution through embodiments. Embodiment

[0029] A roll gap adjusting device for a high-speed wire rod finishing mill, which adopts a split structure and utilizes the roll box housing and the taper box housing of the high-speed wire rod finishing mill. An adjusting mechanism is arranged outside the original roll box housing. A gear I 10 is installed at the lower end of the adjusting central shaft 1 on the side of the adjusting mechanism. The gear I 10 is fixed by a fixing key I 14. Deep groove ball bearings I 5, deep groove ball bearings II 11 and the gear I 10 are installed on both sides of the adjusting central shaft 1. The upper deep groove ball bearing I 5 is fixed by an outer gland 2. The outer gland 2 is installed on the end face of the fixed housing 4 through 6 bolts 3 for positioning the deep groove ball bearing I 5. In order to prevent the roll ring cooling water from entering the deep groove ball bearing I 5 during production, the outer ring of the deep groove ball bearing II 11 is fixed at the end face of the fixed housing 4. A skeleton seal 7 is installed between the outer gland 2 and the fixed housing 4. An asbestos gasket is installed between the fixed housing 4 and the taper box housing 12 to ensure the lubrication of the bearing and prevent foreign objects from entering. At the same time, it is fixed on the end face of the taper box housing 4 through 3 bolts 8I to ensure that the adjusting central shaft 1 is firmly fixed. When the adjusting central shaft 1 rotates, it drives the gear I 10 to rotate. In order to ensure that the adjusting central shaft 1 will not rotate automatically under external force, a positioning sleeve II 24 is installed outside the adjusting central shaft 1. The gear III 22 is welded to the bottom of the positioning sleeve II 24. The positioning gear 25 is welded to the positioning column 23. The teeth of the positioning gear 25 and the gear III 22 cooperate with each other for limiting, and the tooth gap is ensured to be within 0.10 mm. On the side of the roll box housing, an angular contact bearing 18 and a gear II 15 are installed on the adjusting lead screw 17. The outer ring of the angular contact bearing 18 is fixed on the end face of the groove roll box housing 6. The inner ring is positioned through a lead screw positioning sleeve 9 and a positioning sleeve I 20. The outer ring of the angular contact ball bearing 18 is firmly fixed by a gland 19 using 6 bolts. The gear II 15 is fixed at the end of the adjusting lead screw 17 through a fixing key II 16. The positioning sleeve I 20 fixes the inner ring of the angular contact ball bearing 18. A metal dust cover is installed outside the angular contact ball bearing 18 to ensure the sealing of the lubricating oil cavity. The adjusting lead screw also cooperates with the roll shaft of the roll ring. The specific cooperation method is the prior art and will not be elaborated.

[0030] This structure is mainly applied to the rolling process of high-speed wire rod production lines, and is used in the process equipment for adjusting the roll gap between the roll rings of the roll shafts of the finishing mill roll boxes of high-speed wire rods. During offline assembly, the adjusting central shaft 1 can be first installed with the deep groove ball bearing I 5 and the deep groove ball bearing II 11, and then installed in the fixed housing 4. The skeleton seal 7 is installed on the outer gland 2 and fixed on the fixed housing 4 using the adjusting bolt 3. Then, the gear I 10 is fixed on the adjusting central shaft 1 through the fixed key I 14. Finally, the fixed housing 4 is fixed on the end face of the cone box housing 12 using the bolt I 8. After the adjusting lead screw 17 is installed with the positioning sleeve I 20, the outer ring of the angular contact ball bearing 18 is installed on the end face of the positioning sleeve I 20. After the lead screw positioning sleeve 9 is installed, this part is fixed on the roll box housing 6 using the pressing cover II 19 and the bolt II 21. Finally, the gear II 15 is fixed on the adjusting lead screw 17 through the fixed key II 16. The adjusting central shaft 1 is firmly fixed. When the adjusting central shaft 1 rotates, it drives the gear I 10 to rotate and drive the gear II 15. In order to ensure that the adjusting central shaft 1 will not rotate automatically under external forces, during the rolling process of the high-speed wire rod production line, the positioning sleeve II 24 is installed on the outside of the adjusting central shaft 1, the gear III 22 is welded to the bottom of the positioning sleeve II 24, and the positioning gear 25 is welded to the positioning column 23 to ensure that the roll gap adjusting device of the finishing mill will not rotate automatically under external forces after the roll gap between the roll rings is adjusted.

Claims

1. A roll gap adjustment device for a high-speed wire rod finishing mill, including an adjustment lead screw (17) for adjusting the position of the roll shaft of the finishing mill, characterized in that: It further includes an adjustment central shaft (1), and the adjustment central shaft (1) is in cooperation with the adjustment lead screw (17) through a gear set; The adjustment central shaft (1) is rotatably arranged in the fixed housing (4), and the fixed housing is fixed to the roller box by bolts; the end of the adjustment central shaft (1) is polygonal and extends outside the fixed housing (4), and a positioning sleeve II (24) is sleeved on the end of the adjustment central shaft (1). A gear III (22) is arranged outside the positioning sleeve II (24); a positioning post (23) is arranged on the fixed housing (4), and a positioning gear (25) is fixedly arranged on the positioning post (23), and the positioning gear (25) is in cooperation with the gear III (22).

2. The roll gap adjusting device of a high-speed wire rod finishing mill according to claim 1, characterized in that: An outer gland (2) is arranged on the fixed housing (4).

3. A roll gap adjusting device for a high-speed wire rod finishing mill according to claim 1, characterized in that: The gear set includes a gear I (10) arranged on the adjustment central shaft (1) and a gear II (15) arranged on the adjustment lead screw (17), and the gear I (10) and the gear II (15) are in meshing cooperation.

4. A roll gap adjusting device for a high-speed wire rod finishing mill according to claim 3, characterized in that: The number of teeth of the gear I (10) is less than the number of teeth of the gear II (15).

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