TWM598193U - Locking device of back roller locking ring - Google Patents

Abstract

The locking device of the back roller locking ring of this creation includes a locking ring ratchet wrench and a driving device. The locking ring ratchet wrench includes: a fixing seat with a ring structure to be sleeved on a back roller locking ring; a ratchet wheel with a ring structure to be sleeved on the back roller locking ring, the The inner ring of the ratchet wheel protrudes with a tenon for inserting into a groove of the back roller locking ring, a plurality of protruding teeth are formed on the outer ring of the ratchet wheel; a stop pawl, one end of which is pivotally connected to the fixed Seat, and the other end is used to abut the convex teeth on the outer ring of the ratchet; and a push-pull rod extending outward from the outer ring of the fixed seat. The driving device is connected to the push-pull rod for applying force on the push-pull rod to rotate the fixing seat.

Description

Locking device of back roller locking ring

This creation is related to a locking device, more particularly a locking device of the back roller locking ring.

The existing hot-rolled steel strip mill in the industry is a quadruple mill. In addition to two upper and lower work rolls, its structure is supported by two upper and lower back rolls. After working for a period of time, the work roll and back roll will deteriorate and need to be replaced.

The replaced back roll roll assembly will be lifted to the disassembly machine for disassembly. Separate the back roller from the bearing box, then hoist the back roller to the grinder for surface grinding, and then lift the ground back roller to the disassembly machine by the back roller rack, and then combine the back roller with the bearing box . When the back roll roll assembly is disassembling and assembling the roll and the bearing box, the locking ring and the retaining ring must be removed or installed. When removing or installing the locking ring, the male side of the locking ring must be adjusted before disassembly. When adjusting the position of the male side of the locking ring, you must use the special wrench for the locking ring and use the overhead crane auxiliary hook to pull the special wrench for the locking ring to rotate the locking ring on the male side to adjust its position and make the lock The tightening ring is against the retaining ring to achieve the purpose of fixing the position of the bearing box.

However, when adjusting the locking ring by pulling the special wrench of the locking ring with the auxiliary hook of the overhead crane, because it is not easy to control the tension and direction, the wrench is easy to fall off or the wire rope is broken, which may hit the operator, so there is a high risk of operation. It is not easy to adjust the locking degree of the locking ring, so that the locking is too tight and the bush and sleeve of the bearing box are damaged. In addition, when the handle of the wrench is turned to a vertical state and is in line with the steel cable, the wrench must be removed, and then the handle of the wrench is horizontal and 90 degrees with the steel cable, and then the locking ring is inserted. Repeat the above steps to reach the required adjustment position, so the operation is time-consuming and laborious.

In view of this, this creation proposes a locking device for the back roller locking ring, which can avoid the risk of using cranes and steel cables to pull the wrench.

In order to achieve the above purpose, the locking device of the back roller locking ring of this creation includes a locking ring ratchet wrench and a driving device. The locking ring ratchet wrench includes: a fixing seat with a ring structure to be sleeved on a back roller locking ring; a ratchet wheel with a ring structure to be sleeved on the back roller locking ring, the The inner ring of the ratchet wheel protrudes with a tenon for inserting into a groove of the back roller locking ring, a plurality of protruding teeth are formed on the outer ring of the ratchet wheel; a stop pawl, one end of which is pivotally connected to the fixed Seat, and the other end is used to abut the convex teeth on the outer ring of the ratchet; and a push-pull rod extending outward from the outer ring of the fixed seat. The driving device is connected to the push-pull rod for applying force on the push-pull rod to rotate the fixing seat.

In order to make the above and other purposes, features and advantages of this creation more obvious, the following will be accompanied by the attached drawings, and the detailed description is as follows. In addition, in the description of this creation, the same components are represented by the same symbols, which are explained here first.

The locking device of the back roller locking ring of this creation includes a locking ring ratchet wrench and a driving device. Please refer to FIG. 1, the locking ring ratchet wrench 100 of the present invention includes a ratchet wheel 110 and a wrench housing 120. The ratchet wheel 110 has a ring-shaped structure, and two tenons 112 facing each other at 180 degrees protrude inward from the inner ring, which are respectively used for inserting into two grooves of the locking ring to rotate the locking ring. A plurality of uniformly arranged convex teeth 114 are formed on the outer ring of the ratchet 110, and the convex teeth 114 are inclined in the same direction. The wrench housing 120 has a hollow structure and mainly includes a fixing base 122, a cover plate 124 and two push-pull rods 126. The fixing base 122 has a ring structure and is disposed facing the ratchet wheel 110 and can rotate relative to the ratchet wheel 110. At least one stopping claw 128 is installed on the surface of the fixing base 122, preferably a plurality of, for example, four and symmetrically arranged. One end of each pawl 128 is pivotally connected to the fixing base 122, and the other end is used to abut against the protruding teeth 114 on the outer ring of the ratchet wheel 110. The cover plate 124 has a ring structure and is disposed facing the ratchet wheel 110. The cover plate 124 is connected to the fixing seat 122, and an accommodating space is formed between the cover plate 124 and the fixing seat 122, wherein the ratchet wheel 110 is arranged in the accommodating space, that is, the ratchet wheel 110 is sandwiched between the cover plate 124 and the fixing seat 122 between. The two push-pull rods 126 are arranged oppositely and extend in opposite directions from opposite sides of the outer ring of the fixing base 122.

Please refer to FIG. 2, the driving device 200 of the present invention includes a hydraulic cylinder 210. The bottom of the hydraulic cylinder 210 is connected to a base 220 by a rotating shaft, that is, the hydraulic cylinder 210 can rotate on the base 220. A movable mandrel 212 extends from the front end of the hydraulic cylinder 210, which can perform a reciprocating telescopic movement on the hydraulic cylinder 210. The upper end of the movable mandrel 212 is locked with a lower opening joint 230, and the lower opening joint 230 is connected to an upper opening joint 240 by a mandrel. The upper split joint 240 can be connected to one of the push-pull rods 126 of the locking ring ratchet wrench 100 by a bolt.

Please refer to Figures 3 and 4, when using the locking device of the back roller locking ring of this creation to lock the back roller locking ring, set the locking ring ratchet wrench 100 on the locking ring 310 to make the ratchet 110 Two tenons 112 protruding from the inside are respectively inserted into two grooves on the outside of the locking ring 310. The bottom of the hydraulic cylinder 210 of the driving device 200 is connected to the base 220 by a rotating shaft, and the upper opening joint 240 is bolted to the push-pull rod 126 of the locking ring ratchet wrench 100 (see FIG. 3). Then start the hydraulic cylinder 210 to push out the movable spindle 212 and push the push-pull rod 126 to rotate counterclockwise. At this time, the stop pawl 128 on the fixed seat 122 of the wrench housing 120 will interact with the convex teeth 114 on the outer ring of the ratchet wheel 110. The ratchet wheel 110 is also rotated counterclockwise, so that the locking ring 310 is driven to rotate counterclockwise to push outward. When the movable mandrel 212 of the hydraulic cylinder 210 rises to the limit (see Figure 4), the mandrel 212 is operated to move down, and the push-pull rod 126 of the wrench housing 120 will be pulled to rotate clockwise, and stop The pawl 128 does not actuate the ratchet wheel 110, so neither the ratchet wheel 110 nor the locking ring 310 will rotate. When the movable mandrel 212 of the hydraulic cylinder 210 is lowered to the limit, it is operated to raise it again, and the above steps are repeated until the locking ring 310 is pressed outwards against the retaining ring 320, so that the bearing box is fixed in position. When the locking ring 310 is to be loosened, the operating direction can be changed by turning the locking ring ratchet wrench 100 upside down.

This creation uses the principle and structure of the general ratchet wrench to make a locking ring ratchet wrench, so that when it is used, it can produce only a single turning thrust, and convert the linear force direction into the circumferential direction to adjust the lock ring. , To achieve the purpose of locking the bearing box positioning. When the locking ring is to be loosened, the operating direction can be changed by turning the ratchet wrench upside down.

In addition, this creation also uses a hydraulic cylinder to drive the locking ring ratchet wrench, which can avoid the risk of using cranes and steel cables to pull the wrench. The actuation system of the hydraulic cylinder can be achieved by setting a manual control valve. The slow actuation speed and high pressure of the hydraulic cylinder are used to make the operation easier for the operator. The bottom of the hydraulic cylinder is connected to the base by a rotating shaft, and the lower split joint and the upper split joint, and the upper split joint and the push-pull rod are also connected by a rotating shaft, so that when the hydraulic cylinder is pushed out and retracted, it can follow the locking ring ratchet wrench The push-pull rod moves to offset the arc, so that the hydraulic cylinder moves more smoothly.

The locking device of the back roller locking ring of this creation has at least the following advantages:

1. The mechanism of the locking ring ratchet wrench and the hydraulic cylinder is simple, not easy to damage and easy to maintain.

2. When adjusting the tightening or loosening of the locking ring, just turn the locking ring ratchet wrench upside down and use it to change the operating direction. Therefore, you only need to prepare a set of locking ring ratchet wrenches.

3. When using the locking ring ratchet wrench to work, the linear reciprocating motion of the hydraulic cylinder can be converted into a circular motion to rotate the locking ring on the male side to adjust its position.

4. The mechanism of the locking ring ratchet wrench is simple. You only need to put it on the locking ring teeth, and then connect the upper opening joint at the front end of the hydraulic cylinder robot arm to the push-pull rod of the locking ring ratchet wrench, and then operate the oil The pressure cylinder can be operated up and down, so the operation is simple and convenient, and the wrench does not need to be removed and inserted frequently, which saves time and effort, and reduces the workload of personnel.

5. The oil pressure action is slow, easy to control and high in safety, which can reduce operation risks and improve the safety of workers.

6. When using the existing method to disassemble and assemble the back roll combination, because the crane is not easy to control the tension and direction, about every 240 sets of disassembly and assembly, the bushing and sleeve of the bearing box will be damaged. When using the locking ring ratchet wrench of this creation to work, because it is easy to control the locking force of the locking ring, it will not cause damage to the bushing and sleeve of the bearing box, and it can save about 900,000 yuan in maintenance costs every year.

Although this creation has been disclosed with the aforementioned examples, it is not intended to limit the creation. Anyone with ordinary knowledge in the technical field to which this creation belongs can make various changes and modifications without departing from the spirit and scope of this creation. Therefore, the scope of protection of this creation shall be subject to the scope of the attached patent application.

100: Locking ring ratchet wrench 110: Ratchet 112: Tenon 114: convex tooth 120: Wrench housing 122: fixed seat 124: cover 126: push rod 128: Stop claw 200: Drive 210: Hydraulic cylinder 212: Activity Mandrel 220: base 230: Lower opening joint 240: Upper opening connector 310: Locking ring 320: Buckle

Figure 1 is a schematic diagram of the locking ring ratchet wrench created. Figure 2 is a schematic diagram of the driving device created. Figures 3 to 4 show how to use the locking device of the back roller locking ring of this creation.

100: Locking ring ratchet wrench

112: Tenon

122: fixed seat

124: cover

126: push rod

200: Drive

210: Hydraulic cylinder

212: Activity Mandrel

220: base

230: Lower opening joint

240: Upper opening connector

310: Locking ring

320: Buckle

Claims (4)

A locking device for a back roller locking ring, including: a locking ring ratchet wrench, the locking ring ratchet wrench includes: a fixing seat with a ring structure to be sleeved on a back roller locking ring; The ratchet wheel has a ring structure and is used to cover the back roller locking ring. The inner ring of the ratchet wheel protrudes with a tenon for inserting into a groove of the back roller locking ring. The outer ring of the ratchet wheel A plurality of protruding teeth are formed on the upper part; a stop pawl, one end of which is pivotally connected to the fixing seat, and the other end is used to abut against the protruding teeth on the outer ring of the ratchet; and a push-pull rod from which the fixed seat The outer ring of the seat extends outwards; and a driving device is connected to the push-pull rod for applying force on the push-pull rod to rotate the fixed seat. For example, the locking device of the back roller locking ring of claim 1, wherein the locking ring ratchet wrench further comprises: a cover plate having a ring structure and connected to the fixing seat, wherein the ratchet wheel is clamped on the cover Between the board and the fixed seat. For example, the locking device of the back roller locking ring of claim 1, wherein the driving device includes: a hydraulic cylinder, the base of the hydraulic cylinder is connected to a fixed base by a rotating shaft, and the front end of the hydraulic cylinder A movable mandrel protrudes, which can perform reciprocating telescopic movement, and the movable mandrel is connected to the push-pull rod. For example, the locking device of the back roller locking ring of claim 3, wherein the driving device further comprises: a lower opening joint, which is locked on the movable mandrel; and an upper opening joint, one end of which is connected to the lower opening by a mandrel The other end is connected to the push-pull rod with a bolt.

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