Adjusting device applied to pinch roll adjusting sleeve

Abstract

The utility model discloses an adjusting device applied to a pinch roll adjusting sleeve, which comprises a box body, an upper adjusting sleeve and a lower adjusting sleeve are arranged in the box body, and the adjusting device is characterized by further comprising a driving mechanism and a limiting mechanism, the driving mechanism comprises an adjusting air cylinder arranged outside the box body, a rocker arm is rotationally arranged in the box body, a piston rod of the adjusting air cylinder is hinged and matched with the rocker arm, an upper connecting rod and a lower connecting rod are further hinged to the rocker arm, and the upper connecting rod and the lower connecting rod are hinged to an upper adjusting arm and a lower adjusting arm on the upper adjusting sleeve and the lower adjusting sleeve respectively; the limiting mechanism comprises a fixed spacer bush nut, a limiting sleeve, a limiting sleeve and a gland which are arranged on the box body; a limiting block is arranged at the upper end of the adjusting rod; and the gland is in threaded connection with an adjusting bolt. The device is simple in structure, convenient to disassemble and maintain, low in failure rate and flexible in action, improves good mechanical performance and abrasion resistance, is convenient to maintain and assemble offline, improves maintenance efficiency, and reduces maintenance cost.

Description

Technical Field

[0001] This utility model belongs to the technical field of steel rolling equipment, specifically relating to an adjustment device applied to the adjustment sleeve of the pinch roll. Background Technology

[0002] Pinch rolls are key equipment in high-speed wire rod production. They are primarily used to smoothly guide the wire rod from the finishing mill exit to the cooling tank and into the spinneret tube, while preventing excessive speed as the wire rod exits the finishing mill. When producing thick wire rod, the pinch rolls must accelerate the pulling action to prevent blockage within the spinneret tube; their functional accuracy directly affects product quality. Therefore, the pinch roll gap needs frequent adjustment during production.

[0003] The roll gap is adjusted via an adjusting sleeve. The adjusting device drives the adjusting sleeve, which in turn adjusts the roll gap size through a transmission mechanism such as a gear set. Existing adjusting mechanisms, such as... Figure 1 As shown, the device includes two sets of cylinders 4 (or hydraulic cylinders) that cooperate with the upper adjusting sleeve 2 and the lower adjusting sleeve 3, and the position range of the upper adjusting sleeve is controlled by the adjusting rod 13. In the above structure, the upper and lower adjusting sleeves are adjusted separately by two sets of cylinders (or hydraulic cylinders) as driving mechanisms. The structure is complex, has poor synchronization, and is slow to respond. At the same time, in the existing adjustment mechanism, the upper adjusting sleeve is limited by a limiting sleeve. The limiting sleeve is an integral structure and cannot be adjusted. It can basically meet the adjustment needs in the initial stage, but if wear occurs during operation, it cannot be compensated in time, and there are also problems such as difficulty in disassembly and maintenance. Utility Model Content

[0004] The purpose of this invention is to provide an adjustment device for the adjustment sleeve of the pinch roller, so as to solve the problems in the prior art.

[0005] This utility model is achieved through the following technical solution: an adjustment device for adjusting sleeves of pinch rollers, including a housing, with an upper adjusting sleeve and a lower adjusting sleeve arranged inside the housing, characterized in that: it further includes a driving mechanism and a limiting mechanism;

[0006] The drive mechanism includes an adjusting cylinder disposed outside the housing, a rocker arm rotatably disposed inside the housing, a piston rod of the adjusting cylinder hinged to the rocker arm, an upper connecting rod and a lower connecting rod hinged to the rocker arm, and the upper connecting rod and the lower connecting rod are respectively hinged to the upper adjusting arm and the lower adjusting arm on the upper adjusting sleeve and the lower adjusting sleeve.

[0007] The limiting mechanism includes a fixed spacer nut mounted on the housing, a limiting sleeve threadedly fitted to the fixed spacer nut, and a pressure cap above the limiting sleeve; an adjusting rod slidingly fitted to the inner cavity of the limiting sleeve, and the lower end of the adjusting rod hingedly fitted to the connecting arm of the upper adjusting sleeve; a limiting block mounted on the upper end of the adjusting rod, the limiting block fitting with the lower part of the limiting sleeve; and an adjusting bolt threadedly connected to the pressure cap, the lower end of the adjusting bolt fitting with the upper surface of the limiting block.

[0008] Furthermore, a locking nut is provided on the upper part of the adjusting bolt.

[0009] Furthermore: the adjusting rod and the connecting arm are connected by an adjusting link, and the middle of the adjusting link is provided with a spherical head and a spherical seat that cooperate with each other.

[0010] The beneficial effects of this utility model are as follows: This utility model features a simple structure, flexibility during frequent starts and stops and oscillation movements, excellent mechanical properties and wear resistance, and a convenient and flexible adjustment sleeve mechanism. The adjustment sleeve mechanism is integrated with the high-strength fixing spacer nut and separate from the cylinder, facilitating maintenance. This adjustment sleeve mechanism is easy to disassemble, has a low failure rate, reduces maintenance costs, and extends online time from one month to approximately 24 months, ensuring product quality during wire rod rolling. The modification yields excellent results and significant economic benefits. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the existing pinch roller adjusting sleeve mechanism;

[0012] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the limiting mechanism structure of this utility model;

[0014] Figure 4 This is a schematic diagram of the rocker arm structure of this utility model.

[0015] The numbers in the diagram are explained as follows: 1 is the housing, 2 is the upper adjusting sleeve, 3 is the lower adjusting sleeve, 4 is the adjusting cylinder, 5 is the rocker arm, 6 is the upper connecting rod, 7 is the lower connecting rod, 8 is the upper adjusting arm, 9 is the lower adjusting arm, 10 is the fixing spacer nut, 11 is the limiting sleeve, 12 is the pressure cap, 13 is the adjusting rod, 14 is the connecting arm, 15 is the limiting block, 16 is the locking nut, 17 is the adjusting bolt, and 18 is the copper sleeve. Detailed Implementation

[0016] Reference Appendix Figure 2-4 This utility model discloses an adjustment device for the adjustment sleeve of the pinch roller, including a housing 1, an upper adjustment sleeve 2 and a lower adjustment sleeve 3 are provided inside the housing, and its key technical point is that it also includes a driving mechanism and a limiting mechanism.

[0017] The drive mechanism includes an adjusting cylinder 4 disposed outside the housing, a rocker arm 5 rotatably disposed inside the housing, a piston rod of the adjusting cylinder hinged to the rocker arm, an upper connecting rod 6 and a lower connecting rod 7 hinged to the rocker arm, and the upper connecting rod and the lower connecting rod are respectively hinged to the upper adjusting arm 8 and the lower adjusting arm 9 on the upper adjusting sleeve and the lower adjusting sleeve.

[0018] The limiting mechanism includes a fixed spacer nut 10 mounted on the housing, a limiting sleeve 11 threadedly engaged with the fixed spacer nut, and a pressure cap 12 mounted above the limiting sleeve; an adjusting rod 13 slidingly engaged with the inner cavity of the limiting sleeve, and the lower end of the adjusting rod hingedly engaged with the connecting arm 14 of the upper adjusting sleeve; a limiting block 15 integrally mounted on the upper end of the adjusting rod, the limiting block slidingly engaged with the larger upper cavity of the limiting sleeve cavity and its lower limiting engagement; an adjusting bolt 17 threadedly connected to the pressure cap, the lower end of the adjusting bolt engaging with the upper surface of the limiting block.

[0019] Preferably, a locking nut 16 is provided on the upper part of the adjusting bolt.

[0020] Preferably, the adjusting rod and the connecting arm are connected by an adjusting link. The adjusting link has a spherical head and a spherical seat mechanism in the middle, and both ends of the adjusting link are hinged to the adjusting rod and the connecting arm, respectively. This spherical pair structure allows for better transmission and compensation for deviations during transmission.

[0021] Preferably, a coupling is provided between the rocker arm and the hydraulic cylinder piston rod, which can compensate for angular deviations.

[0022] Preferably, each of the four pin holes on the rocker arm is provided with a pin and a copper sleeve 18. Figure 4 In the middle, the leftmost pin hole mates with the piston rod, and the second one from the right is the main pin hole, which mates with the main shaft for rotation. The main shaft is fixedly fitted to the housing. The holes on either side of the main pin hole mate with the upper and lower connecting rods, respectively.

[0023] This utility model's structure achieves the distribution of driving force from a single cylinder through a rocker arm, ensuring the synchronous operation of the two adjusting sleeves. In the limiting mechanism, the limiting bolt can adjust the stroke of the adjusting rod. After the upper pressure cover is removed, the adjusting rod can be easily removed for replacement and maintenance, greatly saving maintenance time and improving efficiency.

[0024] This utility model has a simple structure, is easy to disassemble and maintain, has a low failure rate, is flexible in operation, improves mechanical properties and wear resistance, and is convenient for offline maintenance and assembly, thereby improving maintenance efficiency and reducing maintenance costs.

Claims

1. An adjusting device for adjusting sleeves of pinch rollers, comprising a housing, wherein an upper adjusting sleeve and a lower adjusting sleeve are disposed inside the housing, characterized in that: It also includes drive mechanisms and limit mechanisms; The drive mechanism includes an adjusting cylinder disposed outside the housing, a rocker arm rotatably disposed inside the housing, a piston rod of the adjusting cylinder hinged to the rocker arm, an upper connecting rod and a lower connecting rod hinged to the rocker arm, and the upper connecting rod and the lower connecting rod are respectively hinged to the upper adjusting arm and the lower adjusting arm on the upper adjusting sleeve and the lower adjusting sleeve. The limiting mechanism includes a fixed spacer nut mounted on the housing, a limiting sleeve threadedly fitted to the fixed spacer nut, and a pressure cap above the limiting sleeve; an adjusting rod slidingly fitted to the inner cavity of the limiting sleeve, and the lower end of the adjusting rod hingedly fitted to the connecting arm of the upper adjusting sleeve; a limiting block mounted on the upper end of the adjusting rod, the limiting block fitting with the lower part of the limiting sleeve; and an adjusting bolt threadedly connected to the pressure cap, the lower end of the adjusting bolt fitting with the upper surface of the limiting block.

2. The adjusting device for adjusting the pinch roller adjusting sleeve according to claim 1, characterized in that: A locking nut is provided on the upper part of the adjusting bolt.

3. The adjusting device for adjusting the pinch roller adjusting sleeve according to claim 1, characterized in that: The adjusting rod and the connecting arm are connected by an adjusting link, and the middle of the adjusting link is provided with a spherical head and a spherical seat that cooperate with each other.

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