Pressing device for assembling large-size parts

Abstract

The utility model provides a pressing device for assembling a large-size part, which is used for solving the problems that in the prior art, a fixed part and a rotating part are not tightly attached, and the equipment needs to be frequently shut down for adjustment in the running process. The pressing device comprises a support, an adjusting shaft is fixed to the support, an adjusting nut is connected to the adjusting shaft in a screwed mode, the adjusting shaft is sleeved with a fixing piece, one side of the adjusting nut abuts against the fixing piece through an adjusting device, the fixing piece applies pressure to the rotating piece, the adjusting device comprises two adjusting sleeves, and a plurality of disc springs are arranged between the adjusting sleeves. The support is connected with the base through a sliding device. The utility model has the advantages of simple processing and compact structure. In the assembling process, through accurate adjustment of the first adjusting bolt, all parts can be rapidly adjusted to ideal installation sizes, tedious and repeated repairing and assembling are effectively avoided, and the labor intensity of workers and the production cost are remarkably reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pulp and paper making equipment, in particular to a pressing device for assembling large-sized parts. Background Art

[0002] In view of the current situation in the field of assembling large-sized parts in China, in order to pursue the maximization of cost-effectiveness, welded structures are widely adopted due to their relatively low cost. However, this method inevitably brings about the problem of part deformation, making it difficult to meet the design specifications of the assembly dimensions during the assembly process, often requiring multiple repairs and adjustments, which not only consumes a large amount of time and human resources but also increases material waste, thus driving up the overall cost. The pressing devices in the prior art are in a fixed form and cannot keep the rotating part and the fixed part in a tightly attached state, resulting in the generation of gaps between the fixed part and the rotating part, and further unable to prevent the occurrence of welding deformation, ultimately leading to dimensional deviations, making it difficult to guarantee the fitting accuracy of the assembly. This not only poses more stringent requirements for the accuracy of production and manufacturing but also forces enterprises to invest more human and material resources in subsequent calibration and adjustment work, consuming a large amount of manpower and material resources. Summary of the Utility Model

[0003] The utility model provides a pressing device for assembling large-sized parts, which solves the problems that the fixed part and the rotating part in the prior art do not fit tightly and the equipment needs to be frequently shut down for adjustment during operation.

[0004] The technical solution of the utility model is realized as follows:

[0005] A pressing device for assembling large-sized parts includes a bracket, an adjusting shaft is fixed on the bracket, an adjusting nut is screwed on the adjusting shaft, a fixing piece is sleeved on the adjusting shaft, one side of the adjusting nut abuts against the fixing piece through an adjusting device, the fixing piece applies pressure to the rotating part, the adjusting device includes two adjusting sleeves, a plurality of disc springs are arranged between the adjusting sleeves, and the bracket is connected to the base through a sliding device.

[0006] Further, the sliding device includes a connecting plate, the connecting plate is fixedly connected to the side wall of the base through a first bolt, a first screw hole is arranged at the top end of the connecting plate, a first adjusting bolt is screwed in the first screw hole, the small end of the first adjusting bolt can abut against or be rotatably connected to the side wall of the bottom end of the bracket, a plurality of long circular holes are arranged on the bracket, the center lines of the long circular holes are all parallel to the axis of the first adjusting bolt, connecting bolts are arranged in the long circular holes, and second screw holes corresponding to the long circular holes one by one are arranged on the base, and the connecting bolts are screwed into the second screw holes. The modular design of the sliding device, which can be independently installed and replaced through components such as the connecting plate, the first adjusting bolt, and the bracket, simplifies the installation process, reduces the maintenance difficulty, and improves the work efficiency.

[0007] Further, the bracket includes a bottom plate, on which there are two support plates. One support plate is provided with a large hole, and the other support plate is provided with a small hole. Both ends of the adjustment shaft are respectively engaged with the large hole and the small hole. The small end of the adjustment shaft is provided with a shoulder, and the shoulder abuts against the inner side surface of the support plate. The small end of the adjustment shaft penetrates through the support plate and is screwed with a fixing nut. The side wall of the small end of the adjustment shaft is also provided with a relieved edge, and a flat surface for cooperating with the relieved edge is provided in the small hole. By adopting mechanical connection methods such as bolt connection, shoulder and relieved edge, it is more convenient to inspect and replace worn or damaged parts during maintenance, reducing the maintenance cost.

[0008] Further, a plurality of adjustment pads are provided between the bracket and the base, and the adjustment pads correspond to the oblong holes one by one. The adjustment pads are provided with U-shaped grooves for the connecting bolts to slide. As consumables, the simple design and easy replacement characteristics of the adjustment pads can reduce the long-term maintenance cost.

[0009] Further, a support screw hole is provided on the bracket, and a support bolt is screwed in the support screw hole. The small end of the support bolt can abut against the top surface of the base. The presence of the support bolt can ensure that the bracket remains stable under the action of the adjustment pad, thereby improving the adjustment accuracy.

[0010] Further, a disc spring telescopic sleeve is sleeved on the adjusting device, and both ends of the disc spring telescopic sleeve are respectively fixed on the adjusting sleeve by hose clamps. The design of the disc spring telescopic sleeve reduces the risk of disc spring failure by preventing impurities from entering the interior of the disc spring, thereby enhancing the safety of the entire system.

[0011] Further, a locking nut is screwed on the first adjusting bolt. The locking nut effectively prevents the first adjusting bolt from loosening or shaking during vibration, impact or long-term use by providing additional fastening force.

[0012] Further, a sealing ring is provided between the adjusting sleeve and the adjusting shaft. It helps to stabilize the position of the adjusting shaft and improve the stability of the entire device.

[0013] The beneficial effects that can be produced by this technical solution.

[0014] The utility model is not only simple to process but also has a compact structure. During the assembly process, through the precise adjustment of the first adjusting bolt, the components can be quickly adjusted to the ideal installation dimensions, effectively avoiding cumbersome repeated fitting, and significantly reducing the labor intensity of workers and the production cost.

[0015] In the utility model, the adjusting nut presses the disc spring. The disc spring has a large deformation energy per unit volume, can bear a large load in a small space, and the force is concentrated and transmitted in a concentric manner, ensuring excellent stress conditions. The disc springs are designed in a stacked combination, making them have good buffer and shock absorption capabilities.

[0016] The parts or components used in the present utility model are modularly designed, with good interchangeability, and can operate safely and continuously under all normal working conditions. For example, when the disc is damaged, only the damaged part needs to be replaced, which greatly facilitates the maintenance and repair work.

[0017] Through the cooperation of each bolt, the present utility model can be repaired and maintained with a minimum amount of disassembly, has a good locking effect, high stability and reliability, and is convenient for operation and safety maintenance.

[0018] The pressing device of the present utility model enables the fixing part and the rotating part to always be closely attached, thereby optimizing the production performance of the equipment, ensuring the long-term, stable and safe operation of the equipment, and laying a solid foundation for improving the overall production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 is the schematic plan view of the present utility model;

[0021] Figure 2 is the schematic three-dimensional structure view at the adjusting shaft of the present utility model;

[0022] Figure 3 is Figure 1 the partial enlarged view at A in

[0023] Figure 4 is the right view of the bracket;

[0024] Figure 5 is the top view when the bracket and the base are installed;

[0025] Figure 6 is the top view of the adjusting pad.

[0026] Wherein: 1. Bracket, 2. Adjusting shaft, 3. Adjusting nut, 4. Fixed plate, 5. Adjusting sleeve, 6. Disc spring, 7. Rotating part, 8. Sliding device, 9. Connecting plate, 10. First bolt, 11. Base, 13. First screw hole, 14. First adjusting bolt, 15. Long circular hole, 16. Connecting bolt, 17. Second screw hole, 18. Support plate, 19. Bottom plate, 20. Large hole, 21. Small hole, 22. Axle shoulder, 23. Fixed nut, 24. Knurling, 25. Adjusting pad, 26. U-shaped groove, 27. Support bolt, 28. Disc spring expansion sleeve, 29. Hose clamp, 30. Locking nut, 31. Sealing ring. Detailed implementation mode

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0028] As Figures 1-5 shown, the embodiment of the present invention provides a pressing device for assembling large-sized parts, including a bracket 1, an adjusting shaft 2 is fixed on the bracket 1, an adjusting nut 3 is screwed on the adjusting shaft 2, a fixing piece 4 is sleeved on the adjusting shaft 2, one side of the adjusting nut 3 abuts against the fixing piece 4 through an adjusting device, and the fixing piece 4 applies pressure to a rotating part 7. The adjusting device includes two adjusting sleeves 5, and a plurality of disc springs 6 are arranged between the adjusting sleeves 5. The bracket 1 is connected to a base 11 through a sliding device 8.

[0029] During the use process, rotate the adjusting nut 3 to make the adjusting nut 3 approach the fixing piece 4. At this time, the distance between the adjusting nut 3 and the fixing piece 4 decreases, and sufficient pressure is applied to the fixing piece 4 through the disc spring 6. When the rotating part 7 cannot overcome the pressure of the fixing piece 4, the rotating part 7 is tightly fixed by the fixing piece 4. When it is necessary to make the rotating part 7 rotatable, rotate the adjusting nut 3 to make the adjusting nut 3 away from the fixing piece 4. At this time, the distance between the adjusting nut 3 and the fixing piece 4 increases, and the pressure applied by the disc spring 6 to the fixing piece 4 decreases, so that the rotating part 7 can overcome the pressure of the fixing piece 4 and rotate. Through the sliding device 8, the bracket 1 can drive the fixing piece 4 to directly move away from the rotating part 7, which is convenient for the disassembly of the rotating part 7. The adjusting nut 3 can be composed of two nuts, and the two nuts can improve the locking effect and prevent the problem that the nut loosens and cannot press the fixing piece 4. The adjusting sleeve 5 of this solution can be a flat washer, and the flat washer provides a supporting surface for the disc spring 6, so that the disc spring 6 can be evenly stressed, preventing the disc spring 6 from tilting and causing damage or being unable to provide uniform pressure for the fixing piece 4. The pressing effects of the nut and the disc spring 6 cooperate together. Even if the fixing part wears during use, it will always be tightly attached to the rotating part 7, achieving a good fixing effect. By adjusting the number and type of the disc springs 6 and the rotation amount of the adjusting nut 3, it can adapt to rotating parts 7 of different sizes, weights and materials, with strong versatility and adaptability. And when a single disc is damaged, only the damaged disc needs to be replaced separately, which is beneficial to maintenance and repair.

[0030] As Figure 1 、 3, as shown in Figure 4, the sliding device 8 includes a connecting plate 9. The connecting plate 9 is fixedly connected to the side wall of the base 11 by a first bolt 10. The top end of the connecting plate 9 is provided with a first screw hole 13. A first adjusting bolt 14 is screwed into the first screw hole 13. The small end of the first adjusting bolt 14 can abut against or be rotatably connected to the side wall of the bottom end of the bracket 1. A plurality of oblong holes 15 are formed in the bracket 1. The center lines of the oblong holes 15 are all parallel to the axis of the first adjusting bolt 14. Connecting bolts 16 are provided in the oblong holes 15. Second screw holes 17 corresponding to the oblong holes 15 one by one are provided on the base 11. The connecting bolts 16 are screwed into the second screw holes 17.

[0031] Before use, align the oblong holes 15 with the second screw holes 17. The connecting bolts 16 pass through the oblong holes 15 and are screwed into the second screw holes 17. Connect the connecting plate 9 to the base 11 through the first bolt 10. At this time, the first screw hole 13 on the connecting plate 9 provides support and guidance for the first adjusting bolt 14. When the first adjusting bolt 14 rotates in the first screw hole 13, the first adjusting bolt 14 will drive the bracket 1 to move. When the first adjusting bolt 14 abuts against the bracket 1, rotating the first adjusting bolt 14 can make the bracket 1 move away from the connecting plate 9, and then manual reset is required. When the first adjusting bolt 14 is rotatably connected to the bracket 1, rotating the first adjusting bolt 14 can make the bracket 1 perform reciprocating motion, but it is necessary to fix a bearing or other means on the bracket 1 to connect the first adjusting bolt 14 to the bracket 1. By setting the pitch size of the first adjusting bolt 14, the moving speed of the bracket 1 can be adjusted. During the movement, the cooperation of the oblong holes 15 and the connecting bolts 16 provides guidance for the bracket 1, and the nuts of the connecting bolts 16 can play a role in restricting the degrees of freedom of the bracket 1. By moving the first adjusting bolt 14 along the first screw hole 13 in the horizontal direction, the levelness and assembly position dimensions of the bracket 1 can be ensured. By precisely adjusting the first adjusting bolt 14, the position of the bracket 1 can be finely adjusted to ensure that the pressure between the rotating member 7 and the fixed piece 4 is uniform and appropriate, thereby improving the assembly accuracy. The cooperation of the oblong holes 15 and the second screw holes 17 makes the bracket 1 easy to disassemble and install.

[0032] As Figures 1-5As shown, the bracket 1 includes a bottom plate 19. Two support plates 18 are provided on the bottom plate 19. A large hole 20 is provided on one of the support plates 18, and a small hole 21 is provided on the other support plate 18. The two ends of the adjusting shaft 2 are respectively engaged with the large hole 20 and the small hole 21. A shaft shoulder 22 is provided at the small end of the adjusting shaft 2. The shaft shoulder 22 abuts against the inner side surface of the support plate 18. The small end of the adjusting shaft 2 penetrates through the support plate 18 and is screwed with a fixing nut 23. A knurled portion 24 is further provided on the side wall of the small end of the adjusting shaft 2. A plane is provided in the small hole 21 and is engaged with the knurled portion 24. The fixing nut 23 can also be a double nut. During the assembly process, the small end of the adjusting shaft 2 is inserted through the large hole 20 so that the shaft shoulder 22 abuts against the support plate 18, and then the fixing nut 23 is tightened. The fixing nut 23 frictions with the bracket 1 and applies a tensile force to the adjusting shaft 2 to fix the adjusting shaft 2, ensuring the stability of the adjusting shaft 2 in the axial position and preventing axial movement during use, thereby ensuring the pressing effect of the device. The large hole 20 and the small hole 21 facilitate the support and limit of the adjusting shaft 2 by the support plate 18, simplify the assembly process, and improve the assembly efficiency. Through the cooperation of the knurled portion 24 and the plane, the rotation of the adjusting shaft 2 during use is effectively prevented, ensuring the fixation of the adjusting shaft 2 and the stability of the entire device. Compared with the traditional welding fixing method, the processing and assembly difficulty and cost are reduced. At the same time, since problems such as thermal deformation and stress concentration that may occur during welding are avoided, the service life and reliability of the adjusting shaft 2 and the bracket 1 are also improved. The large hole 20 and the small hole 21 can also be used as marks to enable the staff to quickly distinguish the assembly direction of the adjusting shaft 2 and prevent the adjusting shaft 2 from being installed reversely.

[0033] As Figure 1 , 3 , 6 shows that a plurality of adjusting pads 25 are provided between the bracket 1 and the base 11. The adjusting pads 25 correspond to the oblong holes 15 one by one. The adjusting pad 25 includes a plurality of gaskets. A U-shaped groove 26 for the sliding of the connecting bolt 16 is provided on each adjusting pad 25. The use of the adjusting pads 25 effectively reduces the direct contact between the bracket 1 and the base 11, thereby reducing friction, making the movement of the bracket 1 on the sliding device 8 smoother, and also extending the service life of the entire device. The adjusting pads 25 can be quickly installed on the bracket 1 through the U-shaped grooves 26 without additional fixing measures, improving the assembly efficiency. Moreover, the U-shaped grooves 26 can also limit the adjusting pads 25, enhancing the stability of the entire device. By changing the combination and quantity of the adjusting pads 25, the height of the bracket 1 can be finely adjusted, providing more adjustability for different assembly requirements.

[0034] As Figure 1As shown, support screw holes are provided on the support 1, and support bolts 27 are screwed into the support screw holes. The small end of the support bolt 27 can abut against the top surface of the base 11. By providing the cooperation of the support screw holes and the support bolts 27, when the small end of the support bolt 27 abuts against the top surface of the base 11, the support 1 can be supported, preventing the generation of a gap between the support 1 and the base 11 due to the setting of the adjusting pad 25, which may cause the center of gravity of the support 1 to shift and the support 1 to tilt during movement. The support bolt 27 provides an additional support point for the support 1, ensuring that the support 1 can still remain stable and avoid tilting or shaking in the case of a gap generated by the adjusting pad 25, reducing the mechanical stress generated by tilting or shaking, and reducing the risk of wear and damage to components such as the support 1, the adjusting pad 25, and the base 11.

[0035] As Figure 1 , 2 shown, a disc spring telescopic sleeve 28 is sleeved on the adjusting device, and both ends of the disc spring telescopic sleeve 28 are respectively fixed on the adjusting sleeve 5 through hose clamps 29. The disc spring telescopic sleeve 28 is a prior art and can also prevent the disc spring 6 from pinching workers during the compression process. By using the hose clamps 29, the two ends of the telescopic tube can be fixed on the adjusting sleeve 5 at both ends of the disc spring 6, effectively preventing impurities, dust, liquid, etc. from entering the inside of the disc spring 6, thereby avoiding damage or wear of the disc spring 6, extending the service life of the disc spring 6. Due to the protection of the disc spring telescopic sleeve 28, the failure rate of the disc spring 6 is reduced, thereby reducing the downtime caused by repairing or replacing the disc spring 6 and improving the working efficiency of the equipment. Using the hose clamps 29 to fix the disc spring telescopic sleeve 28 simplifies the assembly process and does not require complex fixing or sealing measures.

[0036] As Figure 1 , 3 shown, a locking nut 30 is screwed onto the first adjusting bolt 14. By abutting the locking nut 30 against the connecting plate 9, the first adjusting bolt 14 can be fixed after being adjusted, effectively preventing the first adjusting bolt 14 from shaking during use, thus ensuring the stability of the entire device and reducing the problem of being unable to be tightened due to the loosening of the first adjusting bolt 14.

[0037] As Figure 2 shown, a sealing ring 31 is provided between the adjusting sleeve 5 and the adjusting shaft 2. Through the sealing ring 31, the gap between the adjusting device and the adjusting shaft 2 can be sealed, preventing dust, debris, and other impurities from entering the gap between the adjusting sleeve 5 and the adjusting shaft 2, and avoiding contamination and damage to internal components. The sealing ring 31 can reduce the friction and vibration between the adjusting sleeve 5 and the adjusting shaft 2, helping to reduce the vibration and impact during the adjustment process, thereby improving the adjustment accuracy and stability, and also reducing the noise generated during the operation of the adjusting device to a certain extent.

[0038] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A pressing device for assembling large-sized parts, comprising a bracket (1), characterized in that: A regulating shaft (2) is fixed on a bracket (1). A regulating nut (3) is screwed on the regulating shaft (2). A fixing piece (4) is sleeved on the regulating shaft (2). One side of the regulating nut (3) abuts against the fixing piece (4) through a regulating device. The fixing piece (4) applies pressure to a rotating part (7). The regulating device includes two regulating sleeves (5). A plurality of disc springs (6) are arranged between the regulating sleeves (5). The bracket (1) is connected to a base (11) through a sliding device (8).

2. The pressing device for assembling large-sized parts according to claim 1, wherein: The sliding device (8) includes a connecting plate (9). The connecting plate (9) is fixedly connected to the side wall of the base (11) through a first bolt (10). A first screw hole (13) is provided at the top end of the connecting plate (9). A first regulating bolt (14) is screwed in the first screw hole (13). The small end of the first regulating bolt (14) can abut against or be rotatably connected to the side wall of the bottom end of the bracket (1). A plurality of oblong holes (15) are formed in the bracket (1). The center lines of the oblong holes (15) are all parallel to the axis of the first regulating bolt (14). Connecting bolts (16) are arranged in the oblong holes (15). Second screw holes (17) corresponding to the oblong holes (15) one by one are provided on the base (11). The connecting bolts (16) are screwed to the second screw holes (17).

3. The pressing device for assembling large-sized parts according to claim 1, characterized in that: The bracket (1) includes a bottom plate (19). Two support plates (18) are provided on the bottom plate (19). A large hole (20) is provided in one of the support plates (18). A small hole (21) is provided in the other support plate (18). The two ends of the regulating shaft (2) are respectively matched with the large hole (20) and the small hole (21). A shoulder (22) is provided at the small end of the regulating shaft (2). The shoulder (22) abuts against the inner side surface of the support plate (18). The small end of the regulating shaft (2) penetrates through the support plate (18) and is screwed with a fixing nut (23). A serration (24) is further provided on the side wall of the small end of the regulating shaft (2). A plane matched with the serration (24) is provided in the small hole (21).

4. The pressing device for assembling large-sized parts according to claim 1, characterized in that: A plurality of regulating pads (25) are arranged between the bracket (1) and the base (11). The regulating pads (25) correspond to the oblong holes (15) one by one. A U-shaped groove (26) for the connecting bolt (16) to slide is provided on the regulating pad (25).

5. A pressing device for assembling large-sized parts according to claim 4, characterized in that: A support screw hole is provided on the bracket (1). A support bolt (27) is screwed in the support screw hole. The small end of the support bolt (27) can abut against the top surface of the base (11).

6. The pressing device for assembling large-sized parts according to claim 1, characterized in that: A disc spring expansion sleeve (28) is sleeved on the regulating device. The two ends of the disc spring expansion sleeve (28) are respectively fixed on the regulating sleeves (5) through hose clamps (29).

7. A pressing device for assembling large-sized parts according to claim 2, characterized in that: A locking nut (30) is screwed on the first regulating bolt (14).

8. A pressing device for assembling large-sized parts according to claim 1, characterized in that: A sealing ring (31) is arranged between the regulating sleeve (5) and the regulating shaft (2).

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