Novel collapsible hydraulic cylinder mechanism of cold rolling drum
By introducing bearing housings and thrust self-aligning bearings into the cold-rolled coils and eliminating the rotary oiler, the problems of rotary expansion and contraction hydraulic cylinder failure and spindle loosening were solved, and stable operation of the equipment was achieved.
Patent Information
- Application Number
- CN202422604322.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-10-28
AI Technical Summary
The existing rotary expansion and contraction hydraulic cylinders for cold-rolled coils are prone to failure during the production process, leading to wear of the seals, oil leakage, and loosening of the mandrel connection, which in turn can cause fatigue fracture.
A bearing housing is added between the first mandrel and the expansion cylinder, eliminating the rotary oiler. The non-rotational movement of the expansion cylinder is achieved through the bearing housing and the thrust self-aligning bearing. The range of motion of the mandrel is controlled by dry oil lubrication and sensors.
This effectively prevented the rotary oiler from malfunctioning, solved the fatigue fracture problem at the tail of the spindle, and ensured the stable production of the unit.
Smart Images
Figure CN223518322U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to cold rolled strip steel production technical field, concretely is a kind of new cold rolling reel's expansion and contraction hydraulic cylinder mechanism. BACKGROUND
[0002] The existing cold rolling reel generally installs rotating expansion and contraction hydraulic cylinder in tail of transmission side, and the rotating oil feeder is respectively injected into rod cavity and rodless cavity, drives piston rod to drive mandrel to reciprocate, to achieve the purpose of reel expansion and contraction. Figure 3 When producing cold rolling reel, rotating expansion and contraction hydraulic cylinder rotates with reel, and rotating oil feeder is fixed by anti-rotation rod (see Figure 4 ).
[0003] Therefore, the utility model provides a kind of new cold rolling reel's expansion and contraction hydraulic cylinder mechanism, to eliminate the drawbacks of existing device. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a kind of new cold rolling reel's expansion and contraction hydraulic cylinder mechanism, to solve the shortcoming of modern product in background art.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0006] A kind of new cold rolling reel's expansion and contraction hydraulic cylinder mechanism, including bearing box, the first mandrel is connected by thrust aligning bearing with the bearing box, the connecting frame is fixedly connected with the bearing box side wall, the pin shaft is arranged in the connecting frame inner side wall, the connecting shaft is connected with the pin shaft by joint bearing, the expansion and contraction cylinder is connected with the connecting shaft away from the pin shaft by half joint, and the expansion and contraction cylinder is fixed on base.
[0007] On the basis of the above technical scheme, the utility model further provides the following optional technical scheme:
[0008] In an optional scheme: first positioning sleeve and second positioning sleeve are arranged between the first mandrel and bearing box, and the second positioning sleeve side wall is fixedly connected with gland.
[0009] In an optional scheme: the bearing box side wall is provided with dry oil lubricating oil cup.
[0010] In an optional scheme: the expansion and contraction cylinder tail is provided with sensor.
[0011] Compared with prior art, the utility model has the beneficial effects as follows:
[0012] The utility model discloses a bearing box is added between the first mandril and the expansion cylinder, makes the expansion cylinder not rotate with the reel and cancels the rotary oil feeder, solves the problem of the easy failure of the rotary oil feeder and the fatigue fracture of the mandril tail, and guarantees the smooth production of the unit. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is the structure schematic drawing of the utility model.
[0014] Figure 2 It is the A-A place section view of the utility model.
[0015] Figure 3 It is the inside structure schematic drawing of the existing cold rolling reel expansion hydraulic cylinder mechanism.
[0016] Figure 4 It is Figure 3 the enlarged view of the middle B.
[0017] Marked annotation: 1 bearing box, 2 first mandril, 3 dry oil lubricating oil cup, 4 connecting frame, 5 first positioning sleeve, 6 second positioning sleeve, 7 gland, 8 connecting shaft, 9 thrust aligning bearing, 10 expansion cylinder, 11 sensor, 14 half joint, 15 pin shaft, 16 joint bearing, 111 rotary oil feeder, 112 rotary hydraulic cylinder, 113 second mandril, 114 mandril thread tool-removing groove. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the following is in conjunction with the drawing and example, and the utility model is further explained in detail.
[0019] In one embodiment, as shown in Figures 1-4 A new type of cold rolling reel expansion hydraulic cylinder mechanism includes bearing box 1, bearing box 1 is connected with first mandril 2 through thrust aligning bearing 9, connecting frame 4 is fixedly connected on the side wall of bearing box 1, pin shaft 15 is arranged in the inner side wall of connecting frame 4, connecting shaft 8 is connected with connecting frame 4 through joint bearing 16, expansion cylinder 10 is connected with connecting shaft 8 through half joint 14 at the end away from pin shaft 15, and expansion cylinder 10 is fixed on the base.
[0020] The mechanism adds a bearing box 1 between first mandril 2 and expansion cylinder 10, so that expansion cylinder 10 does not rotate with the reel and cancels rotary oil feeder 111, solves the problem of the easy failure of rotary oil feeder 111 and the fatigue fracture of mandril tail, and guarantees the smooth production of the unit.
[0021] In one embodiment, as shown in Figure 1 First positioning sleeve 5 and second positioning sleeve 6 are arranged between first mandril 2 and bearing box 1, and gland 7 is fixedly connected on the side wall of second positioning sleeve 6.
[0022] The first positioning sleeve 5 and the second positioning sleeve 6 cooperate with the first mandrel 2, and gap fit is adopted for convenient disassembly.
[0023] In one embodiment, as shown in Figure 1 and Figure 2 The bearing box 1 side wall is provided with a dry oil lubricating oil cup 3.
[0024] The dry oil lubricating oil cup 3 is a device for storing and dispensing dry oil. It is usually installed on mechanical equipment, such as bearing seat or other parts that need regular lubrication. The design of the dry oil lubricating oil cup makes it easy for the operator to add lubricating grease to the mechanical parts to maintain their normal operation and reduce wear.
[0025] In one embodiment, as shown in Figure 1 The tail of the expansion cylinder 10 is provided with a sensor 11.
[0026] The sensor 11 is installed at the tail of the expansion cylinder 10 to control the axial movement distance of the first mandrel 2, so that the reel is expanded to the required range.
[0027] The above embodiment discloses a new type of cold rolling reel expansion hydraulic cylinder mechanism, and its specific working principle and process are as follows: a bearing box 1 is added between the first mandrel 2 and the expansion cylinder 10, the bearing box 1 only does axial reciprocating motion, a group of thrust angular contact ball bearings are installed on the bearing sleeve in the bearing box 1, the first positioning sleeve 5 and the second positioning sleeve 6 cooperate with the first mandrel 2, gap fit is adopted for convenient disassembly, and a key is used to transmit rotary motion, the knuckle bearing 16 is used to bear the axial load. The expansion cylinder 10 is fixed on the base through bolts, and the sensor 11 is installed at the tail of the expansion cylinder 10 to control the axial movement distance of the first mandrel 2, so that the reel is expanded to the required range.
[0028] The mechanism adds a bearing box 1 between the first mandrel 2 and the expansion cylinder 10, so that the expansion cylinder 10 does not rotate with the reel and cancels the rotary oil feeder 111, solves the problems of easy failure of the rotary oil feeder 111 and fatigue fracture of the mandrel tail, and ensures the smooth production of the unit.
[0029] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A novel expanding and contracting hydraulic cylinder mechanism of a cold rolling mandrel, characterized by, The application relates to a bearing box (1) connected with a first core shaft (2) through a thrust self-aligning bearing (9), a connecting frame (4) fixedly connected with the side wall of the bearing box (1), a pin shaft (15) arranged on the inner side wall of the connecting frame (4), a connecting shaft (8) connected with the pin shaft (15) through a joint bearing (16), a telescopic cylinder (10) connected with the end, away from the pin shaft (15), of the connecting shaft (8) through a half joint (14), and the telescopic cylinder (10) is fixed on a base; First and second positioning sleeves (5 and 6) are arranged between the first core shaft (2) and the bearing box (1), and the side wall of the second positioning sleeve (6) is fixedly connected with a gland (7); A dry oil lubricating oil cup (3) is arranged on the side wall of the bearing box (1).
2. A novel expanding and contracting hydraulic cylinder mechanism of a cold rolling mandrel according to claim 1, characterized in that, A sensor (11) is arranged at the tail of the telescopic cylinder (10).