A hinge device for preventing the falling of a refiner cover

Abstract

The utility model relates to the technical field of pulping machine, specifically disclose a hinge device that can prevent pulping machine cover to plummet, include: the hinge seat of cover, fixed on the cover, install self -lubricating bearing and pin shaft in the hinge seat of cover, the pin shaft passes through the self -lubricating bearing, hinge seat subassembly, fixed on the machine body, the hinge seat subassembly includes upper hinge seat and lower hinge seat, the upper hinge seat with the lower hinge seat all are located the below of hinge seat of cover, and with hinge seat of cover contact, tight screw, set up on the hinge seat subassembly, for fixing the one end of pin shaft, the utility model discloses the hinge seat subassembly by adopting split type design, by the upper hinge seat and lower hinge seat jointly constitute stable double -point support structure, effectively undertake and even dispersed cover's weight, combine the upper and lower hinge seat and clearance compensation gasket of independent adjustable, have the high adjustability and adaptability.

Description

Technical Field

[0001] This utility model belongs to the field of pulping machine technology, specifically relating to a hinge device that can prevent the pulping machine cover from falling off. Background Technology

[0002] In heavy equipment such as pulp mills, the machine cover is typically connected to the machine body via hinges for opening and closing. Currently, common hinge structures often employ a single hinge seat and pin connection, or an integral hinge structure. Under the long-term load of the machine cover's own weight and frequent opening and closing, the hinge contact surfaces of these structures are prone to wear, leading to increased clearance and potentially causing the machine cover to sag. Once the machine cover sags, it not only fails to close properly, posing a safety hazard, but also makes opening and closing difficult and, in severe cases, can even damage other components of the equipment.

[0003] However, existing hinge devices generally lack effective and convenient gap compensation and adjustment functions. Once the cover drops due to wear, it is often necessary to repair it by temporary methods such as welding or adding shims, or to replace the entire hinge assembly directly. These methods have low repair accuracy and are complicated to operate. They cannot fundamentally solve the inherent defects caused by single-point support and non-adjustability, resulting in high equipment maintenance costs, long downtime, and affecting production efficiency and equipment lifespan. Utility Model Content

[0004] The purpose of this invention is to provide a hinge device that can prevent the cover of a pulper from falling off, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A hinge device for preventing the cover of a pulp mill from sagging includes:

[0007] A hood hinge seat is fixed to the hood, and a self-lubricating bearing and a pin are installed inside the hood hinge seat, with the pin passing through the self-lubricating bearing;

[0008] A hinge base assembly is fixed to the machine body. The hinge base assembly includes an upper hinge base and a lower hinge base. Both the upper hinge base and the lower hinge base are located below the cover hinge base and are in contact with the cover hinge base.

[0009] A set screw is provided on the hinge seat assembly to fix one end of the pin;

[0010] An adjusting bolt is used to fix the hinge seat assembly to the machine body, and the hinge seat assembly can be moved up and down by adjusting the tightness of the adjusting bolt.

[0011] Preferably, a shim is provided between the hood hinge seat and the hinge seat assembly, the shim being used to adjust the gap between the hood hinge seat and the hinge seat assembly.

[0012] Preferably, the upper hinge seat and the lower hinge seat are independently fixed to the machine body by the adjusting bolt, so that the upper hinge seat and the lower hinge seat can be adjusted up and down respectively.

[0013] Preferably, the hood hinge seat, upper hinge seat, and lower hinge seat are all made of high-strength metal material.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] (1) By adopting a split-type hinge seat assembly, the upper hinge seat and the lower hinge seat together form a stable double-point support structure, which effectively supports and evenly distributes the weight of the cover. Combined with the independently adjustable upper and lower hinge seats and gap compensation shims, it has a high degree of adjustability and adaptability, which can compensate for the wear caused by manufacturing tolerances and long-term operation, and ensure that the cover remains stable and without shaking when opening, closing and at any hovering angle.

[0016] (2) By integrating self-lubricating bearings and finely adjustable pin fixing structure, the friction and wear of rotating parts are reduced, the service life is extended, and the subsequent maintenance and readjustment are made extremely simple. When a slight drop occurs, there is no need to replace the entire hinge assembly. The support performance can be quickly restored by adjusting the bolts and shims, reducing the maintenance cost and downtime of the equipment. Attached Figure Description

[0017] Figure 1 This is the front view of the present invention;

[0018] Figure 2 This is a schematic diagram of the hood hinge seat and hinge seat assembly of this utility model;

[0019] Figure 3 This is a side view of the present invention;

[0020] In the diagram: 1. Hinge seat for the hood; 2. Pin; 3. Self-lubricating bearing; 4. Hinge seat assembly; 41. Upper hinge seat; 42. Lower hinge seat; 5. Set screw; 6. Adjusting bolt; 7. Washer. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1:

[0023] Please see Figures 1-2 As shown, a hinge device for preventing the cover of a pulper from sagging includes:

[0024] A hinge seat 1 is fixed on the cover. A self-lubricating bearing 3 and a pin 2 are installed inside the hinge seat 1. The pin 2 passes through the self-lubricating bearing 3.

[0025] The hood hinge seat 1 is fixed to the appropriate position of the hood by means of bolts or welding. It has a precision bearing hole machined inside for installing the self-lubricating bearing 3. The self-lubricating bearing 3 is made of materials such as copper-based or graphite-based composite materials, which have self-lubricating properties and do not require additional lubrication maintenance. It can effectively reduce the frictional resistance when the pin 2 rotates and extend its service life. The pin 2 acts as a rotation pivot and passes through the self-lubricating bearing 3, so that the hood can rotate smoothly around the pin 2. This design not only ensures the smooth opening and closing of the hood, but also reduces the risk of wear after long-term use through the wear resistance of the bearing.

[0026] The hinge base assembly 4 is fixed to the machine body. The hinge base assembly 4 includes an upper hinge base 41 and a lower hinge base 42. Both the upper hinge base 41 and the lower hinge base 42 are located below the cover hinge base 1 and are in contact with the cover hinge base 1.

[0027] The hinge seat assembly 4 is fixed to the machine body by adjusting bolts 6. Its upper hinge seat 41 and lower hinge seat 42 adopt a split design, which contact the cover hinge seat 1 from the upper and lower directions respectively to form a double-point support structure. This layout makes the weight of the cover evenly distributed on the upper and lower hinge seats, avoiding stress concentration and deformation that may be caused by single-point support. The contact surfaces of the upper and lower hinge seats and the cover hinge seat 1 are usually processed into flat or slightly arc surfaces to ensure large-area fit, improve load-bearing stability and anti-fall effect.

[0028] Set screw 5 is provided on hinge seat assembly 4 and is used to fix one end of pin 2;

[0029] Set screw 5 is usually installed in the threaded hole on the side wall of the lower hinge seat 42 or the upper hinge seat 41. By tightening the set screw 5, its end presses against the end face or side wall of the pin 2, preventing the pin 2 from moving axially or loosening during operation. This fixing method is simple and reliable, easy to disassemble and maintain, and ensures that the pin 2 remains stable in position during long-term use, thereby ensuring the accuracy of the rotation center of the cover.

[0030] Adjusting bolt 6 is used to fix the hinge seat assembly 4 to the machine body, and the hinge seat assembly 4 can be moved up and down by adjusting the tightness of adjusting bolt 6.

[0031] The adjusting bolt 6 passes through the mounting holes of the upper hinge seat 41 and the lower hinge seat 42, and engages with the threaded hole on the machine body. By tightening or loosening the adjusting bolt 6, the up and down position of the hinge seat assembly 4 can be precisely controlled, achieving micron-level adjustment. This adjustment mechanism allows users to compensate for gaps in real time according to the actual position and wear of the cover, restoring tight contact between the upper and lower hinge seats and the cover hinge seat 1, thereby effectively preventing the cover from sagging. After adjustment, the adjusting bolt 6 can be fixed by tightening the lock nut or anti-loosening washer to prevent loosening.

[0032] In one embodiment of the present invention, a shim 7 is provided between the hood hinge seat 1 and the hinge seat assembly 4. The shim 7 is used to adjust the gap between the hood hinge seat 1 and the hinge seat assembly 4.

[0033] The gasket 7 is usually made of metal or wear-resistant non-metallic material, and its thickness can be selected in different specifications as needed. When a gap appears between the hinge seat 1 and the hinge seat assembly 4 due to manufacturing tolerance or long-term wear, the gap can be filled by increasing or decreasing the number or thickness of the gasket 7 to ensure that there is no looseness between the contact surfaces. The use of the gasket 7 not only improves the assembly accuracy, but also extends the service life of the device and reduces the impact and noise caused by the gap.

[0034] In one embodiment of this utility model, the upper hinge seat 41 and the lower hinge seat 42 are independently fixed to the machine body by adjusting bolts 6, so that the upper hinge seat 41 and the lower hinge seat 42 can be adjusted up and down respectively.

[0035] The independent adjustment function of the upper hinge seat 41 and the lower hinge seat 42 allows users to make precise adjustments for different support points of the cover. For example, if the cover tilts forward or backward, the height of the upper hinge seat 41 or the lower hinge seat 42 can be adjusted separately to restore the cover to a horizontal state. This split adjustment design greatly enhances the adaptability and reliability of the device, making it suitable for various installation environments and wear conditions, and ensuring that the cover is always in the best support position.

[0036] In one embodiment of this utility model, the hood hinge seat 1, the upper hinge seat 41, and the lower hinge seat 42 are all made of high-strength metal material.

[0037] As shown above, the cover hinge seat 1, equipped with the self-lubricating bearing 3 and the pin 2, is fixed to the cover. Then, the split upper hinge seat 41 and lower hinge seat 42 are initially installed on the machine body using adjusting bolts 6. Next, the cover is lifted so that the cover hinge seat 1 falls between the hinge seat assembly 4, i.e., the upper and lower hinge seats, and the pin 2 is inserted to connect them. By turning the adjusting bolts 6 of the upper and lower hinge seats, the entire hinge seat assembly 4 is slightly displaced up and down to ensure that the upper hinge seat 41 and the lower hinge seat 42 are evenly and tightly fitted with the corresponding surfaces of the cover hinge seat 1, forming a stable load-bearing platform. If necessary, a shim 7 can be added between the cover hinge seat 1 and the hinge seat assembly 4 to compensate for the gap. After the adjustment is completed, the pin 2 is firmly fixed with the set screw 5 to complete the static setting.

[0038] In the daily operation stage, when it is necessary to open the cover, the operator can directly lift the cover. At this time, the entire weight of the cover is transferred through the cover hinge seat 1 to the upper hinge seat 41 and the lower hinge seat 42 that fit tightly below. The weight is shared by both of them. The cover rotates smoothly around the pin 2 locked by the set screw 5. Its rotating pair is supported by the self-lubricating bearing 3, which effectively reduces friction and wear, making the opening process effortless and smooth. When the cover is at any angle, the cover will not fall or shake due to its own weight because the hinge seat assembly 4 provides stable dual-point support.

[0039] When the cover needs to be closed, rotate it around the pin 2 to the closed position. After long-term operation, if the cover falls slightly again, the device can enter the dynamic maintenance and readjustment stage. Simply loosen the set screw 5 slightly and make fine adjustments again using the adjusting bolts 6 on the upper hinge seat 41 and the lower hinge seat 42 to re-establish tight contact and restore its anti-fall function.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hinge device for connecting a cover and a body of a refiner, which can prevent the cover from falling down, characterized in that, include: A hood hinge seat (1) is fixed on the hood. A self-lubricating bearing (3) and a pin (2) are installed inside the hood hinge seat (1). The pin (2) passes through the self-lubricating bearing (3). A hinge seat assembly (4) is fixed to the body. The hinge seat assembly (4) includes an upper hinge seat (41) and a lower hinge seat (42). The upper hinge seat (41) and the lower hinge seat (42) are both located below the cover hinge seat (1) and are in contact with the cover hinge seat (1). Set screw (5) is provided on the hinge seat assembly (4) for fixing one end of the pin (2); Adjusting bolt (6) is used to fix the hinge seat assembly (4) to the machine body, and to move the hinge seat assembly (4) up and down by adjusting the tightness of the adjusting bolt (6).

2. A hinge device capable of preventing the falling of a cover of a refiner according to claim 1, characterized in that: A shim (7) is provided between the hood hinge seat (1) and the hinge seat assembly (4), and the shim (7) is used to adjust the gap between the hood hinge seat (1) and the hinge seat assembly (4).

3. A hinge device capable of preventing the falling of a cover of a refiner according to claim 1, characterized in that: The upper hinge seat (41) and the lower hinge seat (42) are independently fixed to the machine body by the adjusting bolt (6), so that the upper hinge seat (41) and the lower hinge seat (42) can be adjusted up and down respectively.

4. A hinge device capable of preventing the falling of a cover of a refiner according to claim 1, characterized in that: The hood hinge seat (1), upper hinge seat (41) and lower hinge seat (42) are all made of high-strength metal materials.

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