Radial expansion shaft for supporting strip steel coil stock

Abstract

A radial expansion shaft for supporting strip steel coil stock comprises a core shaft and a rear supporting shaft which are coaxially and fixedly connected, and further comprises a wedge ring plate pair and an expansion driving and rotating coupler, the wedge ring plate pair comprises a circular ring wedge (11) and a sector plate, and the wedge ring plate pair is coaxially arranged outside the core shaft and used for forming a radial expansion shaft body with the same central axis as the core shaft; the expansion drive comprises a pull rod and a linear drive, the pull rod is connected with the linear drive in a coupled mode, and the expansion drive is used for enabling the wedge ring plate pair to be switched between a radial expansion state and a radial retraction state; and the pull rod is coupled and connected with linear drive through the rotary coupler. The levelness of the radial expansion and shrinkage shaft is controlled to be + / -0.05 mm when the radial expansion and shrinkage shaft is sleeved with a strip steel coil material, and the strip steel coil material is expanded and cannot be loosened.

Description

Technical Field

[0001] The utility model relates to the technical field of solar energy supporting equipment manufacturing, in particular to a radial expansion and contraction shaft for supporting strip steel coils. Background Art

[0002] The development of industry has led to the large-scale use of strip steel coils that are easy to transport and store. Uncoilers are used to unwind coiled steel strips. All production units that use coils as raw materials must be equipped with uncoilers at the front end. The expansion of the clamping reel is used to clamp the steel strip coil, and the reel can continue to unwind or coil the coiled steel strip.

[0003] The prior art has the following technical problems:

[0004] (1) The tensioning force cannot be sustained.

[0005] When unwinding, the expansion of the reel is enough to clamp the steel strip coil and provide tension for unwinding. However, after the production time exceeds 3 hours, the expansion force of the reel is insufficient, causing the mandrel and the steel coil to slip, seriously affecting the continuous and stable operation of the production line.

[0006] (2) The horizontality of the reel exceeds the deviation value

[0007] During the unwinding process, the horizontality of the reel has a great influence on the deviation of the strip. Once its deviation value exceeds the design requirements, the strip will continue to deviate, even causing edge scraping, seriously affecting production efficiency and yield rate. Therefore, analyzing the factors affecting the horizontality of the reel and ensuring its deviation value from the root will play a positive role in ensuring the production efficiency of the unit.

[0008] Therefore, the field urgently needs a radial expansion and contraction shaft for supporting strip steel coils, with no attenuation of the expansion force and no deviation value of the horizontality of the roll, which has become a key technical problem to break through the production line of traditional solar support equipment. Utility Model Content

[0009] In view of the defects existing in the above-mentioned prior art, the purpose of the utility model is to provide a radial expansion and contraction shaft for supporting a strip steel coil, so as to solve the technical problems that the expansion force does not decay and the horizontality of the coil does not exceed the deviation value.

[0010] The purpose of the utility model is achieved in this way: a radial expansion and contraction shaft supporting a strip steel coil comprises a core shaft and a rear support shaft coaxially fixedly connected, and also comprises

[0011] The inclined wedge ring plate pair includes an annular inclined wedge and a sector plate. The outer periphery of the annular inclined wedge is slidably matched with a plurality of sector plates. The inclined wedge ring plate pair is coaxially arranged outside the core shaft to form a radial expansion and contraction shaft body having a coaxial axis OO with the core shaft;

[0012] The expansion and contraction drive includes a pull rod and a linear drive. The pull rod is slidably arranged in the core shaft. The pull rod key is connected to the circular wedge. The pull rod is coupled to the linear drive. The expansion and contraction drive is used to switch the wedge ring plate pair between a radial expansion state and a radial retraction state.

[0013] Rotary coupler, the pull rod is coupled to the linear drive through the rotary coupler. The rotary coupler allows the pull rod to rotate, while the output shaft of the linear drive does not rotate. At the same time, the linear movement of the output shaft of the linear drive can be directly transmitted to the pull rod.

[0014] Furthermore, the rotary coupler includes a tapered roller bearing and two plane bearings, the two plane bearings are arranged on both sides of the tapered roller bearing, the pull rod is rotatably fitted on the tapered roller bearing and the plane bearing on the right, and the output shaft of the linear drive is fixedly fitted on the plane bearing on the left.

[0015] Furthermore, the linear drive includes a worm gear pair and a screw-nut pair, the worm of the worm gear pair is fixedly connected to the nut of the screw-nut pair, the worm of the worm gear pair is driven to connect to the motor output shaft, and the screw of the screw-nut pair is the output shaft of the linear drive.

[0016] Furthermore, it also includes eccentric correction, which can be supported on the suspended end of the radial expansion shaft when the strip steel coil is sleeved on the radial expansion shaft expansion support.

[0017] Furthermore, the eccentricity correction includes a calibration shaft and a lifting lever. Both ends of the calibration shaft are supported on the frame by rubber rings. The calibration shaft is provided with two side ear shafts. The two lifting levers are rotatably arranged on the frame around one end. The middle section of the lifting lever is fixedly connected to the two side ear shafts respectively, and the other end is fixedly connected to the lifting cylinder.

[0018] Furthermore, a block is rotatably provided on the side ear shaft, an open slot is provided in the middle of the lifting lever, and the block is fixedly fitted in the open slot.

[0019] Furthermore, a plurality of sector plates are slidably matched on the outer periphery of the circular wedge through guide rail and guide groove pairs.

[0020] A radial expansion and contraction shaft for supporting a strip steel coil, wherein a core shaft 1 and a rear support shaft 2 are coaxially fixedly connected, and a rotatable inclined wedge ring plate pair 10 is driven by a non-rotating expansion and contraction drive 20 to switch between radial expansion and radial retraction, and can be rolled up and supported on the suspended end of the core shaft 1 through an eccentric correction 40, so that the horizontality of the radial expansion and contraction shaft when supporting the strip steel coil is controlled within ±0.05mm, and the strip steel coil will not loosen when it is expanded. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a main cross-sectional view of Embodiment 1 of a radial expansion and contraction shaft for supporting a strip steel coil according to the utility model;

[0022] Figure 2This is a main cross-sectional view of Example 2 of a radial expansion and contraction shaft for supporting a strip steel coil according to the utility model.

[0023] Reference numerals in the above figures:

[0024] 10 inclined wedge ring plate pair, 11 circular ring inclined wedge, 12 sector plate, 13 guide rail guide groove pair

[0025] 20 expansion and contraction drive, 21 pull rod, 22 linear drive, 23 worm gear pair, 24 screw nut pair

[0026] 30 Rotary coupler, 31 Tapered roller bearing, 32 Plane bearing

[0027] 40 eccentricity correction, 41 calibration shaft, 42 lifting lever, 43 frame, 44 side trunnion, 45 block, 46 pivot, 47 opening slot, 48 lifting cylinder. DETAILED DESCRIPTION

[0028] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings, but is not intended to limit the scope of the present invention.

[0029] Example 1

[0030] A radial expansion and contraction shaft for supporting a strip steel coil, a core shaft 1 and a rear support shaft 2 coaxially fixedly connected, comprising

[0031] The beveled wedge ring plate pair 10 comprises a circular beveled wedge 11 and a sector plate 12. The outer circumference of the circular beveled wedge 11 is slidably matched with a plurality of sector plates 12 through a guide rail and guide groove pair 13. The plurality of sector plates 12 together form a circumferential shape. The beveled wedge ring plate pair 10 is coaxially arranged outside the core shaft 1 to form a radial expansion and contraction shaft body having a center axis OO coaxial with the core shaft; the beveled wedge ring plate pair 10 switches between a radial expansion state and a radial retraction state. In the radial expansion state, the circular beveled wedge 11 moves to the left at a certain distance L relative to the sector plate 12 on the center axis OO, and the sector plate 12 moves outward at a certain distance r relative to the circular beveled wedge 11 in the radial direction; in the radial retraction state, the circular beveled wedge 11 moves to the right at a certain distance L relative to the sector plate 12 on the center axis OO, and the sector plate 12 moves inward at a certain distance r relative to the circular beveled wedge 11 in the radial direction;

[0032] The expansion and contraction drive 20 includes a pull rod 21 and a linear drive 22. The pull rod 21 is slidably arranged in the core shaft 1. The pull rod 21 is key-connected to the circular wedge 11. The pull rod 21 is coupled to the linear drive 22. The expansion and contraction drive 20 is used to drive the wedge ring plate pair 10 to switch between the radial expansion state and the radial retraction state and maintain it in this state. The linear drive 22 includes a worm gear pair 23 and a screw nut pair 24. The worm 23.2 of the worm gear pair 23 is fixedly connected to the nut 24.1, and the nut 24.1 is spirally matched with the screw output 24.2. The worm wheel 23.1 rotates to engage the worm 23.2, and the main shaft of the worm wheel 23.1 is connected to the drive motor. The screw output 24.2 is coupled to the pull rod 21 through a rotary coupler 30. Because the worm gear pair 23 has a self-locking function, the linear output of the linear drive 22 can be locked, that is, the axial position of the pull rod 21 relative to the core shaft 1 can be fixed, so there is no problem of the fan plate 12 of the wedge ring plate pair 10 being retracted due to radial pressure, that is, the expansion material roll will not loosen due to a long time.

[0033] The pull rod 21 is coupled to the linear drive 22 via a rotary coupler 30 . The rotary coupler 30 allows the pull rod 21 to rotate, while the output shaft of the linear drive 22 does not rotate. At the same time, the linear movement of the output shaft of the linear drive 22 can be directly transmitted to the pull rod 21 .

[0034] The rotary coupler 30 includes a tapered roller bearing 31 and two plane bearings 32 . The pull rod 21 is rotatably fitted on the tapered roller bearing 31 and the right plane bearing 32 . The screw output 24 . 2 is fixedly fitted on the left plane bearing 32 . The left and right plane bearings 32 are arranged on both sides of the tapered roller bearing 31 .

[0035] Example 2

[0036] A suspended shaft end support is added, and other structures are the same as those in Example 1.

[0037] A radial expansion and contraction shaft for supporting a strip steel coil also includes an eccentric correction 40, which includes a calibration shaft 41 and a lifting lever 42. Both ends of the calibration shaft 41 are supported on a frame 43 through rubber rings. The calibration shaft 41 is provided with ear shafts 44 on both sides, and the side ear shafts 44 are rotatably provided with blocks 45. One end of the lifting lever 42 can be rotatably provided on a pivot 46 of the frame 43, and an open groove 47 is provided in the middle, and the block 45 fits in the open groove 47. The other end of the lifting lever 42 is connected to a lifting cylinder 48, and the lifting cylinder 48 is fixed to the frame 43. The lifting cylinder 48 drives the lifting lever 42 to rotate around the upper end pivot 46 and lift the left end of the calibration shaft 41 around the side ear shaft 44 through the block 45. The calibration shaft 41 is provided in a support groove, and after lifting, the support groove is supported on the suspended end of the core shaft 1.

[0038] A radial expansion and contraction shaft for supporting a strip steel coil, wherein a core shaft 1 and a rear support shaft 2 are coaxially fixedly connected, and a rotatable inclined wedge ring plate pair 10 is driven by a non-rotating expansion and contraction drive 20 to switch between radial expansion and radial retraction, and can be rolled up and supported on the suspended end of the core shaft 1 through an eccentric correction 40, so that the horizontality of the radial expansion and contraction shaft when supporting the strip steel coil is controlled within ±0.05mm, and the strip steel coil will not loosen when it is expanded.

Claims

1. A radial expansion and contraction shaft for supporting a steel strip coil, comprising a core shaft (1) and a rear support shaft (2) coaxially fixedly connected, characterized in that: It also includes an inclined wedge ring plate pair (10), the inclined wedge ring plate pair (10) includes an annular inclined wedge (11) and a sector plate (12), the outer periphery of the annular inclined wedge (11) is slidably matched with a plurality of sector plates (12), the inclined wedge ring plate pair (10) is coaxially arranged outside the core shaft (1), and is used to form a radial expansion and contraction shaft body having a coaxial axis OO with the core shaft; An expansion and contraction drive (20), the expansion and contraction drive (20) comprising a pull rod (21) and a linear drive (22), the pull rod (21) being slidably disposed in the core shaft (1), the pull rod (21) being key-connected to the circular bevel wedge (11), the pull rod (21) being coupled to the linear drive (22), the expansion and contraction drive (20) being used to switch the bevel wedge ring plate pair (10) between a radial expansion state and a radial retraction state; The pull rod (21) is coupled to the linear drive (22) through the rotating coupler (30). The rotating coupler (30) allows the pull rod (21) to rotate, while the output shaft of the linear drive (22) does not rotate. At the same time, the linear movement of the output shaft of the linear drive (22) can be directly transmitted to the pull rod (21).

2. The radial expansion and contraction shaft for supporting a strip steel coil as claimed in claim 1, characterized in that: The rotary coupler (30) includes a tapered roller bearing (31) and two plane bearings (32), the two plane bearings (32) are arranged on both sides of the tapered roller bearing (31), the pull rod (21) is rotatably engaged with the tapered roller bearing (31) and the plane bearing (32) on the right side, and the output shaft of the linear drive (22) is fixedly engaged with the plane bearing (32) on the left side.

3. The radial expansion and contraction shaft for supporting a strip steel coil as claimed in claim 2, characterized in that: The linear drive (22) comprises a worm gear pair (23) and a screw nut pair (24), the worm of the worm gear pair (23) is fixedly connected to the nut of the screw nut pair (24), the worm of the worm gear pair (23) is driven to connect to the output shaft of the motor, and the screw of the screw nut pair (24) is the output shaft of the linear drive (22).

4. The radial expansion and contraction shaft for supporting a strip steel coil according to any one of claims 1 to 3, characterized in that: It also includes an eccentric correction (40), which can be supported on the suspended end of the radial expansion shaft when the strip steel coil is sleeved on the radial expansion shaft expansion support.

5. A radial expansion and contraction shaft for supporting a strip steel coil as claimed in claim 1, characterized in that: The eccentric correction (40) comprises a calibration shaft (41) and a lifting lever (42). Both ends of the calibration shaft (41) are supported on a frame (43) through rubber rings. The calibration shaft (41) is provided with ear shafts (44) on both sides. Two lifting levers (42) are rotatably arranged on the frame (43) around one end. The middle section of the lifting lever (42) is respectively fixedly connected to the ear shafts (44) on both sides, and the other end is fixedly connected to the lifting cylinder (48).

6. The radial expansion and contraction shaft for supporting a strip steel coil as claimed in claim 5, characterized in that: A block (45) is rotatably arranged on the side ear shaft (44), an opening groove (47) is arranged in the middle of the lifting lever (42), and the block (45) is fixedly fitted in the opening groove (47).

7. The radial expansion and contraction shaft for supporting a strip steel coil as claimed in any one of claims 1, 2, 3, 5 and 6, characterized in that: The outer periphery of the circular wedge (11) is slidably matched with a plurality of sector plates (12) via a guide rail and guide groove pair (13).

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