Synchronous operation structure of pinch rolls

Abstract

The utility model discloses a pinch roll synchronous operation structure, which is characterized in that a group of sliding transmission components are respectively arranged at two ends of a synchronous shaft, and the sliding transmission components at two ends are respectively connected with transmission shafts at the same side; the specific structure of each sliding transmission assembly is that the sliding transmission assembly comprises an outer-layer gear ring and an inner-layer gear ring, a flange of the outer-layer gear ring is fixedly connected with the transmission shaft on the side, and inner teeth of the outer-layer gear ring are connected with outer teeth of the inner-layer gear ring in a meshed mode. A synchronizing shaft is assembled in the inner circle of the inner-layer gear ring, a through long key groove is engraved in the surface of the outer circle of the synchronizing shaft in the axial direction, a key is arranged in the through long key groove in a sliding mode, the key is clamped in the through long key groove of the synchronizing shaft and the key groove of the inner-layer gear ring, and the key is fixedly connected with one installation hole of the inner-layer gear ring through a sinking screw. The utility model belongs to the technical field of metallurgical rolling equipment, and solves the problems that two lower pinch rolls are difficult to maintain reliable and synchronous operation due to unreasonable structural arrangement in the prior art, and the abrasion of the two lower pinch rolls is inconsistent.

Description

TECHNICAL FIELD

[0001] The utility model belongs to metallurgical rolling equipment technical field relates to the pinch roll synchronous operation structure. BACKGROUND

[0002] In the metallurgical rolling process, the pinch roll clamps the steel plate to provide clamping force, so that the steel plate advances or retreats. The pinch roll not only has the function of clamping the steel plate to provide clamping force, but also can adjust the width of the two pinch rolls on the width direction according to the different width of the steel plate. In order to make the pinch roll clamp the steel plate accurately and provide clamping force stably, the two upper pinch rolls swing to the lower position to clamp the steel plate when working, and the hydraulic cylinder is opened when adjusting the width, so that the two upper pinch rolls are opened. However, the position of the two lower pinch rolls is fixed. When the pinch roll is needed, it cooperates with the upper pinch roll to clamp the steel plate to provide clamping force. When the pinch roll is not needed, it is only responsible for transporting the steel plate. Because the pinch roll is independently driven and controlled, the rotating speed of the two lower pinch rolls is different. This causes the wear of the two lower pinch rolls to be inconsistent, which finally causes the steel plate to deviate after entering the pinch roll, and the pinch roll and the outlet roller way bear unnecessary axial force, which also increases the working difficulty of the outlet roller way centering mechanism.

[0003] Therefore, how to ensure the consistent rotating speed of the lower pinch roll and make the two lower pinch rolls run synchronously and reliably is particularly important. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a pinch roll synchronous operation structure, which solves the problem of unreasonable structure in the prior art, which makes it difficult for the two lower pinch rolls to run synchronously and reliably, and causes the wear of the two lower pinch rolls to be inconsistent.

[0005] The utility model adopts the technical scheme that the pinch roll synchronous operation structure comprises a synchronous shaft, a group of sliding transmission assemblies are arranged at the two ends of the synchronous shaft respectively, and the sliding transmission assemblies at the two ends are connected with the transmission shaft on the same side respectively.

[0006] The specific structure of each group of sliding transmission assemblies comprises an outer gear ring and an inner gear ring, the flange of the outer gear ring is fixedly connected with the transmission shaft on the same side, and the inner teeth of the outer gear ring are in meshing connection with the outer teeth of the inner gear ring. The synchronous shaft is assembled in the inner circle of the inner gear ring, a through key groove is formed on the outer circular surface of the synchronous shaft in the axial direction, a key is slidably arranged in the through key groove, the key is clamped in the through key groove of the synchronous shaft and the key groove of the inner gear ring, and the key is fixedly connected with one mounting hole of the inner gear ring through a sinking screw.

[0007] The pinch roll synchronous operation structure of the utility model has the following characteristics:

[0008] The outer circular surface close to the inner end of the inner gear ring is provided with outer teeth.

[0009] The inner circumferential surface of the inner layer gear ring is provided with a key groove.

[0010] The outer circumference of the inner layer gear ring is also radially provided with a plurality of mounting holes.

[0011] The outer end of the synchronizing shaft protrudes out of the inner layer gear ring and is provided with a shaft end baffle, the outer diameter of the shaft end baffle is not greater than the inner diameter of the inner layer gear ring, and is greater than the end surface of the key.

[0012] The flange along the inner end of the outer layer gear ring is axially provided with a ring of through holes, and the ring of through holes of the outer layer gear ring is fixedly connected with the inner end surface of the side transmission shaft by screws.

[0013] The inner circumferential surface of the inner cavity of the outer layer gear ring close to the outer end is an inner tooth, the inner circumferential surface of the inner cavity of the outer layer gear ring close to the middle part is provided with an inner boss, and the inner end surface of the inner boss is provided with a ring of bolt holes.

[0014] A dustproof sleeve is sleeved on the synchronizing shaft exposed by the outer layer gear ring and the inner layer gear ring, and the outer end of the dustproof sleeve is fixedly connected with the ring of bolt holes of the outer layer gear ring by bolts.

[0015] The beneficial effects of the utility model are that the both-side roller synchronous structure is increased, which comprises a synchronizing shaft, a key, an inner layer gear ring, an outer layer gear ring, an axial baffle and a dustproof sleeve, the outer layer gear ring is fixed on the pinch roller, the inner layer gear ring and the inner layer gear ring are cooperatively transmitted torque, the key is fixed on the inner layer gear ring, the key is cooperated with the synchronizing shaft, when the speed difference of the both-side pinch rollers appears, the cooperatively transmitted torque of the inner layer gear ring and the inner layer gear ring can make the two pinch rollers synchronously rotate through the synchronizing shaft, so that the synchronous operation is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the installation position structure schematic view of the utility model;

[0017] Figure 2 It is the synchronous principle schematic view of the utility model;

[0018] Figure 3 It is the local enlarged schematic view of the utility model;

[0019] Figure 4 It is the side view structure schematic view of the outer layer gear ring in the utility model;

[0020] Figure 5 It is Figure 4 A-A section schematic view in it;

[0021] Figure 6 It is the side view structure schematic view of the inner layer gear ring in the utility model;

[0022] Figure 7 It is Figure 6 B-B section schematic view in it.

[0023] In the diagram, 1. drive shaft, 2. outer gear ring, 3. inner gear ring, 4. synchronous shaft, 5. key, 6. dust cover, 7. shaft end baffle, 8. lower clamping roller, 9. roller sleeve, 10. screw, 11. internal tooth, 12. external tooth, 13. keyway, 14. flange, 15. bolt hole, 16. inner boss. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0025] Reference Figure 1 , Figure 2 A drive shaft 1 is fixedly mounted in the lower clamping roller 8 on the moving side via a roller sleeve 9, and another drive shaft 1 is fixedly mounted in the lower clamping roller 8 on the fixed side via another roller sleeve 9. The two drive shafts 1 are coaxially arranged, and this utility model is installed between the two drive shafts 1.

[0026] Reference Figure 2 and Figure 3 The overall structure of this utility model includes a synchronous shaft 4, and a set of sliding transmission components are respectively provided at both ends of the synchronous shaft 4. The sliding transmission components at both ends are respectively connected to the transmission shaft 1 on this side.

[0027] Reference Figure 4 , Figure 5 The outer gear ring 2 has the following structure: a through hole is opened along the flange 14 at the inner end of the outer gear ring 2 along the axial direction. The through hole of the outer gear ring 2 is fixedly connected to the inner end face of the transmission shaft 1 on this side by screws 10. An inner boss 16 is provided on the inner circumferential surface of the inner cavity of the outer gear ring 2 near the middle. A bolt hole 15 is opened on the inner end face of the inner boss 16. The inner circumferential surface of the inner cavity of the outer gear ring 2 near the outer end is an inner tooth 11.

[0028] Reference Figure 6 , Figure 7 The inner gear ring 3 has the following structure: the outer circumferential surface of the inner gear ring 3 near the inner end is provided with external teeth 12, the inner circumferential surface of the inner gear ring 3 is provided with keyways 13, and multiple mounting holes are radially opened on the outer circumference of the inner gear ring 3.

[0029] Reference Figure 2 and Figure 3Each set of sliding transmission components has the following specific structure: it includes an outer gear ring 2 and an inner gear ring 3. The flange 14 of the outer gear ring 2 is fixedly connected to the transmission shaft 1 on this side. The inner teeth 11 of the outer gear ring 2 mesh with the outer teeth 12 of the inner gear ring 3. A synchronous shaft 4 is assembled in the inner circle of the inner gear ring 3. A continuous keyway is engraved along the axial direction on the outer surface of the synchronous shaft 4. A key 5 is slidably arranged in the continuous keyway. The key 5 is fitted in the continuous keyway of the synchronous shaft 4 and the keyway 13 of the inner gear ring 3. The key 5 is fixedly connected to a mounting hole of the inner gear ring 3 by a countersunk screw. The outer end of the synchronous shaft 4 extends out of the inner gear ring 3 and is provided with a shaft end baffle 7. A dust cover 6 is fitted on the synchronous shaft 4 exposed at the inner end of the inner gear ring 3 and the outer gear ring 2. The outer end of the dust cover 6 is fixedly connected to a ring of bolt holes 15 of the outer gear ring 2 by bolts.

[0030] The outer diameter of the shaft end baffle 7 is not greater than the inner diameter of the inner gear ring 3, and is greater than the end face of the key 5, to prevent the key 5 from dragging the keyway.

[0031] The working principle of this utility model is as follows:

[0032] The outer gear ring 2 is fixed to the drive shaft 1 by a ring of screws 10. The outer gear ring 2 and the inner gear ring 3 are connected by gear meshing, thereby axially fixing the inner gear ring 3 to the drive shaft 1. The key 5 is fixed in the keyway 13 of the inner cavity of the inner gear ring 3 by a small screw. The inner circle of the inner gear ring 3 is equipped with a synchronous shaft 4, which has a continuous keyway. The key 5 is fitted into the continuous keyway of the synchronous shaft 4 and the keyway 13 of the inner gear ring 3. When the gap between the lower pinch rollers on the drive side and the fixed side is widened, the key 5 and the synchronous shaft 4 can slide axially, which facilitates the axial adjustment of the gap between the drive shaft 1 of the lower pinch rollers on the drive side and the fixed side. The synchronous shaft 4 is fixed with shaft end baffles 7 at both ends to prevent the key 5 on the synchronous shaft 4 from coming out of the inner gear ring 3. The dust cover 6 is fixed on the outer gear ring 2 to prevent dust from entering the interior of the outer gear ring 2 and the inner gear ring 3.

[0033] Example 1

[0034] The synchronous operation structure of the pinch roller in this embodiment 1 is as follows: it includes a synchronous shaft 4, and a set of sliding transmission components are respectively provided at both ends of the synchronous shaft 4. The sliding transmission components at both ends are respectively connected to the transmission shaft 1 on this side.

[0035] The specific structure of each set of sliding transmission components includes an outer gear ring 2 and an inner gear ring 3. The flange 14 of the outer gear ring 2 is fixedly connected to the transmission shaft 1 on this side. The inner teeth 11 of the outer gear ring 2 mesh with the outer teeth 12 of the inner gear ring 3. A synchronous shaft 4 is assembled in the inner circle of the inner gear ring 3. A continuous keyway is engraved on the outer surface of the synchronous shaft 4 along the axial direction. A key 5 is slidably arranged in the continuous keyway. The key 5 is fixedly connected to a mounting hole of the inner gear ring 3 by a countersunk screw.

[0036] Example 2

[0037] The synchronous operation structure of the pinch roller in this embodiment 2 is as follows: it includes a synchronous shaft 4, and a set of sliding transmission components are respectively provided at both ends of the synchronous shaft 4. The sliding transmission components at both ends are respectively connected to the transmission shaft 1 on this side.

[0038] The specific structure of each set of sliding transmission components includes an outer gear ring 2 and an inner gear ring 3. The flange 14 of the outer gear ring 2 is fixedly connected to the transmission shaft 1 on this side. The inner teeth 11 of the outer gear ring 2 mesh with the outer teeth 12 of the inner gear ring 3. A synchronous shaft 4 is assembled in the inner circle of the inner gear ring 3. A continuous keyway is engraved on the outer surface of the synchronous shaft 4 along the axial direction. A key 5 is slidably arranged in the continuous keyway. The key 5 is fixedly connected to a mounting hole of the inner gear ring 3 by a countersunk screw.

[0039] The inner toothed ring 3 has external teeth 12 on its outer circumferential surface near the inner end.

[0040] Example 3

[0041] The synchronous operation structure of the pinch roller in this embodiment 3 is as follows: it includes a synchronous shaft 4, and a set of sliding transmission components are respectively provided at both ends of the synchronous shaft 4. The sliding transmission components at both ends are respectively connected to the transmission shaft 1 on this side.

[0042] The specific structure of each set of sliding transmission components includes an outer gear ring 2 and an inner gear ring 3. The flange 14 of the outer gear ring 2 is fixedly connected to the transmission shaft 1 on this side. The inner teeth 11 of the outer gear ring 2 mesh with the outer teeth 12 of the inner gear ring 3. A synchronous shaft 4 is assembled in the inner circle of the inner gear ring 3. A continuous keyway is engraved on the outer surface of the synchronous shaft 4 along the axial direction. A key 5 is slidably arranged in the continuous keyway. The key 5 is fixedly connected to a mounting hole of the inner gear ring 3 by a countersunk screw.

[0043] The inner circumferential surface of the inner gear ring 3 is provided with a keyway 13.

[0044] Example 4

[0045] The synchronous operation structure of the pinch roller in this embodiment 4 is as follows: it includes a synchronous shaft 4, and a set of sliding transmission components are respectively provided at both ends of the synchronous shaft 4. The sliding transmission components at both ends are respectively connected to the transmission shaft 1 on this side.

[0046] The specific structure of each set of sliding transmission components includes an outer gear ring 2 and an inner gear ring 3. The flange 14 of the outer gear ring 2 is fixedly connected to the transmission shaft 1 on this side. The inner teeth 11 of the outer gear ring 2 mesh with the outer teeth 12 of the inner gear ring 3. A synchronous shaft 4 is assembled in the inner circle of the inner gear ring 3. A continuous keyway is engraved on the outer surface of the synchronous shaft 4 along the axial direction. A key 5 is slidably arranged in the continuous keyway. The key 5 is fixedly connected to a mounting hole of the inner gear ring 3 by a countersunk screw.

[0047] Multiple mounting holes are radially opened on the outer circumference of the inner gear ring 3.

[0048] Example 5

[0049] The synchronous operation structure of the pinch roller in this embodiment 5 is as follows: it includes a synchronous shaft 4, and a set of sliding transmission components are respectively provided at both ends of the synchronous shaft 4. The sliding transmission components at both ends are respectively connected to the transmission shaft 1 on this side.

[0050] The specific structure of each set of sliding transmission components includes an outer gear ring 2 and an inner gear ring 3. The flange 14 of the outer gear ring 2 is fixedly connected to the transmission shaft 1 on this side. The inner teeth 11 of the outer gear ring 2 mesh with the outer teeth 12 of the inner gear ring 3. A synchronous shaft 4 is assembled in the inner circle of the inner gear ring 3. A continuous keyway is engraved on the outer surface of the synchronous shaft 4 along the axial direction. A key 5 is slidably arranged in the continuous keyway. The key 5 is fixedly connected to a mounting hole of the inner gear ring 3 by a countersunk screw.

[0051] The flange 14 along the inner end of the outer gear ring 2 has a ring of through holes along the axial direction. The ring of through holes of the outer gear ring 2 is fixedly connected to the inner end face of the transmission shaft 1 on this side by screws 10.

[0052] Example 6

[0053] The synchronous operation structure of the pinch roller in this embodiment 6 is as follows: it includes a synchronous shaft 4, and a set of sliding transmission components are respectively provided at both ends of the synchronous shaft 4. The sliding transmission components at both ends are respectively connected to the transmission shaft 1 on this side.

[0054] The specific structure of each set of sliding transmission components includes an outer gear ring 2 and an inner gear ring 3. The flange 14 of the outer gear ring 2 is fixedly connected to the transmission shaft 1 on this side. The inner teeth 11 of the outer gear ring 2 mesh with the outer teeth 12 of the inner gear ring 3. A synchronous shaft 4 is assembled in the inner circle of the inner gear ring 3. A continuous keyway is engraved on the outer surface of the synchronous shaft 4 along the axial direction. A key 5 is slidably arranged in the continuous keyway. The key 5 is fixedly connected to a mounting hole of the inner gear ring 3 by a countersunk screw.

[0055] The inner circumferential surface of the outer gear ring 2 near the middle is provided with an inner boss 16, and the inner end face of the inner boss 16 has a ring of bolt holes 15.

[0056] Example 7

[0057] The synchronous operation structure of the pinch roller in this embodiment 7 is as follows: it includes a synchronous shaft 4, and a set of sliding transmission components are respectively provided at both ends of the synchronous shaft 4. The sliding transmission components at both ends are respectively connected to the transmission shaft 1 on this side.

[0058] The specific structure of each set of sliding transmission components includes an outer gear ring 2 and an inner gear ring 3. The flange 14 of the outer gear ring 2 is fixedly connected to the transmission shaft 1 on this side. The inner teeth 11 of the outer gear ring 2 mesh with the outer teeth 12 of the inner gear ring 3. A synchronous shaft 4 is assembled in the inner circle of the inner gear ring 3. A continuous keyway is engraved on the outer surface of the synchronous shaft 4 along the axial direction. A key 5 is slidably arranged in the continuous keyway. The key 5 is fixedly connected to a mounting hole of the inner gear ring 3 by a countersunk screw.

[0059] A dust cover 6 is fitted onto the exposed inner ends of the outer gear ring 2 and the inner gear ring 3 on the synchronous shaft 4. The outer end of the dust cover 6 is fixedly connected to a ring of bolt holes 15 of the outer gear ring 2 by bolts.

[0060] Example 8

[0061] The synchronous operation structure of the pinch roller in this embodiment 8 is as follows: it includes a synchronous shaft 4, and a set of sliding transmission components are respectively provided at both ends of the synchronous shaft 4. The sliding transmission components at both ends are respectively connected to the transmission shaft 1 on this side.

[0062] The specific structure of each set of sliding transmission components includes an outer gear ring 2 and an inner gear ring 3. The flange 14 of the outer gear ring 2 is fixedly connected to the transmission shaft 1 on this side. The inner teeth 11 of the outer gear ring 2 mesh with the outer teeth 12 of the inner gear ring 3. A synchronous shaft 4 is assembled in the inner circle of the inner gear ring 3. A continuous keyway is engraved on the outer surface of the synchronous shaft 4 along the axial direction. A key 5 is slidably arranged in the continuous keyway. The key 5 is fixedly connected to a mounting hole of the inner gear ring 3 by a countersunk screw.

[0063] The outer gear ring 2 has the following structure: a through hole is opened along the flange 14 at the inner end of the outer gear ring 2 along the axial direction. The through hole of the outer gear ring 2 is fixedly connected to the inner end face of the transmission shaft 1 on this side by screws 10. An inner boss 16 is provided on the inner circumferential surface of the inner cavity of the outer gear ring 2 near the middle. A bolt hole 15 is opened on the inner end face of the inner boss 16. The inner circumferential surface of the inner cavity of the outer gear ring 2 near the outer end is an inner tooth 11.

[0064] Example 9

[0065] The synchronous operation structure of the pinch roller in this embodiment 9 is as follows: it includes a synchronous shaft 4, and a set of sliding transmission components are respectively provided at both ends of the synchronous shaft 4. The sliding transmission components at both ends are respectively connected to the transmission shaft 1 on this side.

[0066] The specific structure of each set of sliding transmission components includes an outer gear ring 2 and an inner gear ring 3. The flange 14 of the outer gear ring 2 is fixedly connected to the transmission shaft 1 on this side. The inner teeth 11 of the outer gear ring 2 mesh with the outer teeth 12 of the inner gear ring 3. A synchronous shaft 4 is assembled in the inner circle of the inner gear ring 3. A continuous keyway is engraved on the outer surface of the synchronous shaft 4 along the axial direction. A key 5 is slidably arranged in the continuous keyway. The key 5 is fixedly connected to a mounting hole of the inner gear ring 3 by a countersunk screw.

[0067] The inner gear ring 3 has the following structure: the outer circumferential surface of the inner gear ring 3 near the inner end is provided with external teeth 12, the inner circumferential surface of the inner gear ring 3 is provided with keyways 13, and multiple mounting holes are radially opened on the outer circumference of the inner gear ring 3.

[0068] In summary, the synchronization structure of this invention, through the coordinated operation of the inner and inner gear rings, the synchronization shaft, and the key, eliminates the asynchrony between the moving-side lower pinch roller and the fixed-side lower pinch roller, ensuring the synchronicity of the rotation of both lower pinch rollers; the coordination of the inner and inner gear rings also makes the transmission smooth and reliable. This invention has a simple structure and low manufacturing cost, and the above structure enhances the practical performance of the synchronization mechanism in pinch roller equipment.

Claims

1. A synchronous operation structure for pinch rollers, characterized in that: It includes a synchronous shaft (4), and a set of sliding transmission components are respectively provided at both ends of the synchronous shaft (4). The sliding transmission components at both ends are respectively connected to the transmission shaft (1) on this side. The specific structure of each set of sliding transmission components includes an outer gear ring (2) and an inner gear ring (3). The flange (14) of the outer gear ring (2) is fixedly connected to the transmission shaft (1) on this side. The inner teeth (11) of the outer gear ring (2) mesh with the outer teeth (12) of the inner gear ring (3). A synchronous shaft (4) is assembled in the inner circle of the inner gear ring (3). A continuous keyway is engraved on the outer circle surface of the synchronous shaft (4) along the axial direction. A key (5) is slidably arranged in the continuous keyway. The key (5) is fitted in the continuous keyway of the synchronous shaft (4) and the keyway (13) of the inner gear ring (3). The key (5) is fixedly connected to a mounting hole of the inner gear ring (3) by a countersunk screw.

2. The synchronous operation structure of the pinch rollers according to claim 1, characterized in that: The inner toothed ring (3) has external teeth (12) on its outer circumferential surface near the inner end.

3. The synchronous operation structure of the pinch rollers according to claim 1, characterized in that: The inner circumferential surface of the inner gear ring (3) is provided with a keyway (13).

4. The synchronous operation structure of the pinch rollers according to claim 1, characterized in that: The inner toothed ring (3) also has multiple mounting holes radially opened on its outer circumference.

5. The synchronous operation structure of the pinch rollers according to claim 4, characterized in that: The outer end of the synchronous shaft (4) extends beyond the inner gear ring (3) and is provided with a shaft end baffle (7). The outer diameter of the shaft end baffle (7) is not greater than the inner diameter of the inner gear ring (3) and is greater than the end face of the key (5).

6. The synchronous operation structure of the pinch rollers according to claim 1, characterized in that: The outer gear ring (2) has a through hole along the axial direction on the flange (14) at the inner end. The through hole of the outer gear ring (2) is fixedly connected to the inner end face of the transmission shaft (1) on this side by screws (10).

7. The synchronous operation structure of the pinch rollers according to claim 1, characterized in that: The inner circumferential surface of the inner cavity of the outer toothed ring (2) near the outer end is an inner tooth (11), and an inner boss (16) is provided on the inner circumferential surface of the inner cavity of the outer toothed ring (2) near the middle. A ring of bolt holes (15) is opened on the inner end face of the inner boss (16).

8. The synchronous operation structure of the pinch rollers according to claim 7, characterized in that: A dust cover (6) is fitted on the synchronous shaft (4) exposed at the inner end of the outer gear ring (2) and the inner gear ring (3). The outer end of the dust cover (6) is fixedly connected to a ring of bolt holes (15) of the outer gear ring (2) by bolts.

Images