Rear tension device replacing motor

Abstract

The rear tension device comprises a main shaft, an inner gear ring is arranged on a sliding sleeve of the main shaft, a hydraulic motor matched with the inner gear ring is arranged at the other end of the inner gear ring, two air cylinders are symmetrically and fixedly connected to one side of the outer surface of a shell of the hydraulic motor, and the inner gear rings at the movable ends of the air cylinders are fixedly connected; the outer surface of the main shaft is rotationally sleeved with a hollow shaft, and one end of the hollow shaft is fixedly connected with an outer gear ring. According to the hydraulic braking device, mechanical energy can be converted into hydraulic energy through the inner gear ring, the air cylinder, the hollow shaft, the outer gear ring, the oil tank, the left main swash plate, the right main swash plate, the plane bearing, the small return stroke plate, the large return stroke plate, the fixed cylinder body or the piston assembly, so that braking force (rear tension) is obtained, and then the braking force (rear tension) is obtained by controlling the magnitude of the hydraulic energy. Therefore, the magnitude of braking force (rear tension) is controlled, work can be completely applied without electricity, and a large amount of electric energy can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of braking, in particular to a post-tension device replacing a motor. Background Art

[0002] At present, the supply of electricity is in short supply, very tight, and the gap is large. Energy saving and consumption reduction are what everyone pursues, and every family and enterprise is saving electricity. One of the biggest costs in the manufacturing industry (especially the metal processing industry) is electricity bills.

[0003] In metal rolling and coating enterprises, each production line such as rolling mill has tension in the front and back of the plate and strip during the rolling process. The front tension is a continuous pull, and the rear tension is the opposite of the front tension, which is a force that pulls backward all the time. The front and rear tensions are set values. The motor's work is divided into two states, one is forward drive and the other is backward drag. Combined with actual analysis, forward drive is a real forward drag. When the power is lost, the drive stops immediately. Therefore, if you want the driven object to reach the required state, the motor must drive the driven object all the time, and the motor must work all the time at this time. And a kind of backward drag is to achieve a certain pulling force on the dragged object, but the dragged object does not actually move backward. It is still pulled forward by the front drive. When the front and rear drive forces are balanced, the object is theoretically stationary. Once one of the front and rear drives changes, the static state of the object will change. The speed of the change depends on the difference between the front and rear drives. The larger the difference, the faster the object moves. There is another situation, that is, the movement of objects is not only about pursuing speed, it also requires that the movement of the plate has a certain flattening posture. Here we have to talk about various production lines with the function of unwinding and reeling. The front drive is the work done by the coil, and the rear drive is the drive for the rear tension. At this time, the movement of the plate is still forward, and it is pulled forward by the rear drive. Now let's analyze the work done by the rear drive. To put it bluntly, it is a kind of pulling the plate and pulling and releasing it according to needs. Based on this meaning, I wonder if the rear drive can be regarded as a rear braking force.

[0004] Currently, there are many methods for generating rear braking force, but basically they require the assistance of more electric drive devices for braking, which consumes more electric energy. Utility Model Content

[0005] The utility model is a post-tension device which replaces a motor and is proposed to solve the shortcomings in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a post-tension device replacing a motor, comprising a main shaft, a sliding sleeve of the main shaft is provided with an inner gear ring, the other end of the inner gear ring is provided with a hydraulic motor matching therewith, two cylinders are symmetrically fixedly connected to one side of the outer surface of the housing of the hydraulic motor, and the inner gear rings at the movable ends of the cylinders are fixedly connected;

[0007] A hollow shaft is rotatably sleeved on the outer surface of the main shaft, one end of the hollow shaft is fixedly connected to an outer gear ring, and the outer gear ring matches the inner gear ring;

[0008] The outer surface of the hollow shaft is rotatably sleeved with an oil tank;

[0009] The outer surface of the hollow shaft is symmetrically fixedly connected with a left main swash plate and a right main swash plate, and adjacent sides of the outer surfaces of the left main swash plate and the right main swash plate are fixedly embedded with a plane bearing, and adjacent sides of the outer surfaces of the two plane bearings are respectively fixedly sleeved with a small return plate and a large return plate;

[0010] The outer surface of the hollow shaft is sleeved with a fixed cylinder body, and the fixed cylinder body is fixedly connected to the oil tank;

[0011] The fixed cylinder body is equipped with a plurality of piston assemblies, and the piston assemblies are connected between the small return plate and the large return plate.

[0012] Furthermore, the inner gear ring includes a spline sleeve, and the spline sleeve is slidably sleeved on one end of the main shaft, the inner surface of the spline sleeve is provided with a gear ring body, and the gear ring body matches the outer gear ring, one end of the spline sleeve is fixedly connected with spline teeth, the outer surface of the spline sleeve is fixedly connected with a clutch fork, and the clutch fork is fixedly connected to the movable end of the cylinder, and the main shaft is located on one side of the spline sleeve as a spline shaft, so when the main shaft rotates, the spline sleeve can be driven to rotate.

[0013] Furthermore, an internal spline matching the spline teeth is provided at one end of the output shaft of the hydraulic motor. When the spline teeth move into the internal spline, it is beneficial for the hydraulic motor to drive the output shaft to rotate.

[0014] Furthermore, an annular inner cavity is opened inside the fixed cylinder body, and multiple oil inlets and multiple oil outlets are opened on both sides of the outer surface of the fixed cylinder body, and the oil outlets are connected with the annular inner cavity. A servo valve is installed at the oil outlet, which is an electric actuator used to control the flow and pressure of the fluid medium.

[0015] Furthermore, a plurality of piston cavities are evenly opened on one side of the outer surface of the fixed cylinder body, and the piston cavities are communicated with adjacent oil inlets, and the piston cavities are used to serve as oil suction and discharge chambers.

[0016] Furthermore, the multiple piston assemblies all include a piston body, and the piston body is rotatably connected to the large return disk, and the piston body slides in abutment with the inner wall of the piston cavity. One end of the piston body is fixedly connected to a piston rod, and the piston rod passes through the piston cavity and is rotatably connected to the small return disk. The piston rod, the piston body and the piston cavity can achieve the effect of a syringe and can generate suction force and discharge force.

[0017] Furthermore, the piston rod and the fixed cylinder body are sealed and slidable, a sealing sleeve is sleeved on the outer surface of the piston rod, and the sealing sleeve is fixedly connected to the fixed cylinder body.

[0018] Beneficial effects of the utility model:

[0019] When the utility model is in use, the back-tension device that replaces the motor can convert mechanical energy into hydraulic energy through the inner gear ring, cylinder, hollow shaft, outer gear ring, oil tank, left main inclined plate, right main inclined plate, plane bearing, small return plate, large return plate, fixed cylinder body or piston assembly, so as to obtain braking force (back-tension). Then, the size of the braking force (back-tension) is controlled by controlling the size of the hydraulic energy, so that work can be done completely without using electricity, which can save a lot of electric energy.

[0020] This device can even be installed in the motor system of the left and right coilers of the uncoiler of a reversible (or irreversible) large rolling mill (an irreversible rolling mill only has an uncoiler, or even two uncoilers). When one side is used as a rear brake (rear tension), its rear brake (rear tension) can use this device as the main force (rear tension), and the insufficient part can be achieved by the motor. This will save a lot of electric energy and create great value for enterprises and society. It has far-reaching significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 : A cross-sectional view of the utility model;

[0023] Figure 2 : Schematic diagram of the internal gear ring structure of the utility model;

[0024] Figure 3 : A schematic diagram of the structure of the fixed cylinder body of the utility model in a front view and a cross-sectional view from a first viewing angle;

[0025] Figure 4: A schematic diagram of the structure of the fixed cylinder body of the utility model from the second viewing angle of the main view and section view;

[0026] Figure 5 : A partial sectional schematic diagram of a side view of a fixed cylinder body of the present utility model.

[0027] The reference numerals are as follows:

[0028] 1. Main shaft; 2. Oil tank; 3. Left main swash plate; 4. Small return plate; 5. Hollow shaft; 6. Fixed cylinder block; 7. Piston body; 8. Right main swash plate; 9. Spline sleeve; 10. Cylinder; 11. Hydraulic motor; 12. Plane bearing; 13. Piston rod; 14. Large return plate; 15. Outer gear ring; 16. Gear ring body; 17. Spline teeth; 18. Oil inlet; 19. Piston cavity; 20. Oil outlet; 21. Annular inner cavity. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] like Figures 1 to 5 As shown, it relates to a post-tension device that replaces a motor, including a main shaft 1, a half coupling is fixedly installed at the other end of the main shaft 1, and is used to connect the main shaft 1 with an external shaft, the sliding sleeve of the main shaft 1 is provided with an inner gear ring, and the other end of the inner gear ring is provided with a hydraulic motor 11 matched therewith, and one side of the outer surface of the shell of the hydraulic motor 11 is symmetrically fixedly connected with two cylinders 10, and one side of the outer surface of the hydraulic motor 11 is fixedly installed with a mounting frame for fixing, and the cylinder 10 is fixedly installed on the mounting frame, and the inner gear rings at the movable ends of the cylinder 10 are fixedly connected, and the inner gear ring includes a spline sleeve 9, and the spline sleeve 9 is slidably sleeved on one end of the main shaft 1, the inner surface of the spline sleeve 9 is provided with a ring gear body 16, and the ring gear body 16 matches the outer ring gear 15, one end of the spline sleeve 9 is fixedly connected with a spline tooth 17, the outer surface of the spline sleeve 9 is fixedly connected with a clutch fork, and the clutch fork is fixedly connected to the movable end of the cylinder 10, and one end of the output shaft of the hydraulic motor 11 is provided with an internal spline matching the spline tooth 17. When the spline tooth 17 is matched with the internal spline, the hydraulic motor 11 can drive the spline sleeve 9 to rotate, and the spline sleeve 9 can drive the main shaft 1 to rotate.

[0031] The outer surface of the main shaft 1 is rotatably sleeved with a hollow shaft 5, one end of the hollow shaft 5 is fixedly connected with an outer gear ring 15, and the outer gear ring 15 matches the inner gear ring, the outer surface of the hollow shaft 5 is rotatably sleeved with an oil tank 2, the hollow shaft 5 and the oil tank 2 are connected by a bearing for easy rotation, and the bearing has a sealing performance to ensure the sealing between the hollow shaft 5 and the oil tank 2, the outer surface of the hollow shaft 5 is symmetrically fixedly connected with a left main swash plate 3 and a right main swash plate 8, the outer surfaces of the left main swash plate 3 and the right main swash plate 8 are fixedly embedded with plane bearings 12 on adjacent sides, the outer surfaces of the two plane bearings 12 are respectively fixedly sleeved with a small return plate 4 and a large return plate 14 on adjacent sides, and the hollow shaft 5 can drive the left main swash plate 3 and the right main swash plate 8 to rotate when it rotates.

[0032] The outer surface of the hollow shaft 5 is sleeved with a fixed cylinder body 6, and the fixed cylinder body 6 is fixedly connected to the oil tank 2. The fixed cylinder body 6 is equipped with multiple piston assemblies, and the piston assemblies are connected to the small return plate 4 and the large return plate 14. An annular inner cavity 21 is opened inside the fixed cylinder body 6. Multiple oil inlets 18 and multiple oil outlets 20 are opened on both sides of the outer surface of the fixed cylinder body 6, and the oil outlets 20 are connected to the annular inner cavity 21. The oil outlet 20 is installed with a servo valve. The servo valve is an electric actuator used to control the flow and pressure of the fluid medium. When used, it can be used with a one-way valve to facilitate the control of oil inlet and oil outlet. Direction, a plurality of piston chambers 19 are evenly opened on one side of the outer surface of the fixed cylinder body 6, and the piston chamber 19 is connected to the adjacent oil inlet 18, and the plurality of piston assemblies include a piston body 7, and the piston body 7 is rotatably connected to the large return plate 14, and the piston body 7 slides against the inner wall of the piston chamber 19, one end of the piston body 7 is fixedly connected to a piston rod 13, and the piston rod 13 passes through the piston chamber 19 and is rotatably connected to the small return plate 4, the piston rod 13 and the fixed cylinder body 6 are sealed and slidable, and the piston body 7 can be pushed to move by the piston rod 13, and the piston body 7 can move in the piston chamber 19.

[0033] Working principle: When connecting, the main shaft 1 needs to be connected to the half coupling, and then the half coupling is connected to the half coupling of the high-speed input shaft of the gearbox, and the concentricity must be ensured. When the reel needs to rotate to convey and retract the strip or the reel needs to rotate due to other requirements, the cylinder 10 pushes the clutch fork, and the clutch fork drives the spline sleeve 9 to move until the spline teeth 17 enter the internal spline of the hydraulic motor 11. At this time, the hydraulic motor 11 can be controlled to rotate forward and reverse. When the rotation stops and the reel needs to have a considerable amount of braking, it is only necessary to use the drive of the cylinder 10 to disengage the inner gear ring from the internal spline of the hydraulic motor 11. Until the gear ring body 16 meshes with the outer gear ring 15, the strip overcomes the rear braking force (rear tension) and moves forward under the pull of the front drive (front tension), and then drives the hollow shaft 5 to rotate through the main shaft 1, the inner gear ring and the outer gear ring 15, and the hollow shaft 5 drives the left main swash plate 3 and the right main swash plate 8 to rotate, and then drives the piston rod 13 and the piston body 7 to reciprocate in the piston chamber 19 through the small return plate 4 and the large return plate 14. Since the volume of the fixed cylinder body 6 is always doing the work of sucking and pressing oil under the action of the piston, when the amount and pressure of the pressed oil are fully controlled, the corresponding braking force (rear tension) will be obtained.

[0034] The standard parts used in the utility model can all be purchased from the market, special-shaped parts can be customized according to the description in the specification and the drawings, the specific connection methods of each part all adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art, the machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here, and the components known to technical personnel in this field, their structures and principles can be known to these technical personnel through technical manuals or through conventional experimental methods.

[0035] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A post-tensioning device replacing a motor, comprising a main shaft (1), characterized in that: The sliding sleeve of the main shaft (1) is provided with an inner gear ring, and the other end of the inner gear ring is provided with a hydraulic motor (11) matching therewith, and two cylinders (10) are symmetrically fixedly connected to one side of the outer surface of the shell of the hydraulic motor (11), and the inner gear rings at the movable ends of the cylinders (10) are fixedly connected; A hollow shaft (5) is rotatably sleeved on the outer surface of the main shaft (1), one end of the hollow shaft (5) is fixedly connected to an outer gear ring (15), and the outer gear ring (15) matches the inner gear ring; The outer surface of the hollow shaft (5) is rotatably sleeved with an oil tank (2); The outer surface of the hollow shaft (5) is symmetrically fixedly connected with a left main swash plate (3) and a right main swash plate (8); adjacent sides of the outer surfaces of the left main swash plate (3) and the right main swash plate (8) are fixedly embedded with a plane bearing (12); adjacent sides of the outer surfaces of the two plane bearings (12) are respectively fixedly sleeved with a small return plate (4) and a large return plate (14); The outer surface of the hollow shaft (5) is sleeved with a fixed cylinder body (6), and the fixed cylinder body (6) is fixedly connected to the oil tank (2); The fixed cylinder body (6) is equipped with a plurality of piston assemblies, and the piston assemblies are connected to the small return plate (4) and the large return plate (14).

2. A post-tensioning device replacing a motor according to claim 1, characterized in that: The inner gear ring comprises a spline sleeve (9), and the spline sleeve (9) is slidably sleeved on one end of the main shaft (1), the inner surface of the spline sleeve (9) is provided with a gear ring body (16), and the gear ring body (16) matches the outer gear ring (15), one end of the spline sleeve (9) is fixedly connected with a spline tooth (17), the outer surface of the spline sleeve (9) is fixedly connected with a clutch fork, and the clutch fork is fixedly connected to the movable end of the cylinder (10).

3. A post-tensioning device replacing a motor according to claim 2, characterized in that: One end of the output shaft of the hydraulic motor (11) is provided with an internal spline that matches the spline teeth (17).

4. A post-tensioning device replacing a motor according to claim 1, characterized in that: An annular inner cavity (21) is provided inside the fixed cylinder body (6), and a plurality of oil inlets (18) and a plurality of oil outlets (20) are respectively provided on both sides of the outer surface of the fixed cylinder body (6), and the oil outlets (20) are communicated with the annular inner cavity (21), and a servo valve is installed at the oil outlets (20).

5. A post-tensioning device replacing a motor according to claim 4, characterized in that: A plurality of piston cavities (19) are evenly arranged on one side of the outer surface of the fixed cylinder body (6), and the piston cavities (19) are communicated with adjacent oil inlets (18).

6. A post-tensioning device replacing a motor according to claim 5, characterized in that: The plurality of piston assemblies all include a piston body (7), and the piston body (7) is rotationally connected to a large return plate (14), and the piston body (7) slides against an inner wall of a piston cavity (19), one end of the piston body (7) is fixedly connected to a piston rod (13), and the piston rod (13) passes through the piston cavity (19) and is rotationally connected to a small return plate (4).

7. A post-tensioning device replacing a motor according to claim 6, characterized in that: The piston rod (13) and the fixed cylinder body (6) are sealed and slidable.

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