A hydraulic locking device for a door cover of a metal packer

Abstract

The utility model discloses a door cover hydraulic pressure locking device of metal packing machine belongs to hydraulic pressure packing machine technical field, this door cover hydraulic pressure locking device of metal packing machine, including setting in the locking cylinder of front frame outside, the rear side of locking cylinder is connected with the lock bar through the lock bar pin rod, the inside of front frame is provided with the lock bar bushing of adaptation with lock bar, the outer end of front frame is provided with the door cover, be provided with the door cover bushing of adaptation with the lock bar head on the door cover, the inside of lock bar bushing and door cover bushing forms the locking cavity of coherence, the front end of lock bar sets up the bevel structure. The lock bar of door cover locking device sets up the bevel, improves the locking accuracy of lock bar, and the lock bar is separated from the inside of locking cavity, through the oil cup and oil circuit channel, can directly, accurately deliver lubricating oil to the friction surface of lock bar and lock bar bushing close cooperation, can reduce the wear and tear of locking device to make locking device have the longer service life.

Description

Technical Field

[0001] This utility model belongs to the technical field of hydraulic balers, specifically relating to a hydraulic locking device for the door cover of a metal baler. Background Technology

[0002] A baler is a mechanical device used to compress scrap metal (such as scrap steel, scrap iron, aluminum alloys, copper, etc.) into regular shapes (such as cubes, cylinders, etc.). It reduces the volume of metal through high-pressure compression, making the scrap metal easier to transport, store, and recycle. In large-tonnage metal balers, locking devices are needed to lock the door cover and maintain its stability. Traditional locking devices generally have low alignment accuracy and cannot quickly lock the metal. At the same time, the locking device requires high-frequency locking and unlocking. Existing locking devices have high frictional resistance during unlocking, making them inconvenient to use and causing rapid wear during unlocking, directly affecting the mechanical performance of the device.

[0003] To address this issue, we designed a hydraulic locking device for the door of a metal baler, providing an alternative technical solution. Utility Model Content

[0004] The purpose of this utility model is to provide a hydraulic locking device for the door cover of a metal baler, so as to solve the problems mentioned in the background art regarding the use of existing baler locking devices.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic locking device for the door cover of a metal baling machine, which is installed on the front frame of the metal baling machine, including a locking cylinder installed on the outside of the front frame, a locking rod connected to the rear side of the locking cylinder via a locking rod pin, a locking rod bushing adapted to the locking rod installed on the inner side of the front frame, a door cover installed at the outer end of the front frame, a door cover bushing adapted to the locking rod head installed on the door cover, a continuous locking cavity formed inside the locking rod bushing and the door cover bushing, and a beveled structure installed at the front end of the locking rod.

[0006] Preferably, the locking rod bushing is provided with an oil cup, and the interior of the locking rod bushing is provided with an oil passage.

[0007] Preferably, the oil cup is equipped with an automatic lubrication device or a manual lubrication device.

[0008] Preferably, the locking rod is made of 45# steel, and the locking rod pin is detachable.

[0009] Preferably, the locking cavity of the door cover bushing gradually narrows from front to back, and the bevel length of the locking rod is set to 90mm.

[0010] Preferably, the locking cylinder, locking rod bushing, and door cover bushing are all fixedly installed by bolts.

[0011] Compared with the prior art, the beneficial effects of this utility model are: The locking rod of the door cover locking device has an angled opening, which improves the locking accuracy of the locking rod and makes it easier to pull the locking rod out of the locking cavity. Through the oil cup and oil passage, the lubricating oil can be directly and accurately delivered to the friction surface where the locking rod and the locking rod bushing fit tightly, thereby reducing the wear of the locking device and giving the locking device a longer service life. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the test structure of this utility model; Figure 2 This is a top view of the structure of this utility model.

[0013] In the diagram: 1. Locking cylinder; 2. Oil cup; 3. Locking rod bushing; 4. Door cover bushing; 5. Door cover; 6. Locking rod; 7. Front frame; 8. Locking rod pin; 9. Oil passage. Detailed Implementation

[0014] 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.

[0015] Reference Figure 1-2 A hydraulic locking device for the door cover of a metal baling machine is provided on the front frame 7 of the metal baling machine. It includes a locking cylinder 1 located on the outside of the front frame 7. A locking rod 6 is connected to the rear side of the locking cylinder 1 via a locking rod pin 8. A locking rod bushing 3 adapted to the locking rod 6 is provided on the inner side of the front frame 7. A door cover 5 is provided at the outer end of the front frame 7. A door cover bushing 4 adapted to the rod head of the locking rod 6 is provided on the door cover 5. A continuous locking cavity is formed inside the locking rod bushing 3 and the door cover bushing 4. The front end of the locking rod 6 is provided with a beveled structure.

[0016] This solution proposes a locking device for a door cover 5, used for locking the door cover 5 of a large-tonnage metal baler. Specifically, the locking cylinder 1 is used to increase the locking force of the locking device. The locking cylinder 1 pushes the locking rod 6 to press into the locking rod bushing 3 and the door cover bushing 4, thereby achieving the locking of the door cover 5 and ensuring the stability of the locking. The locking rod 6 of the door cover 5 locking device is provided with an oblique opening to improve the locking accuracy of the locking rod 6, and at the same time facilitates the removal of the locking rod 6 from the inside of the locking cavity, thereby reducing the wear of the locking device and giving the locking device a longer service life.

[0017] Furthermore, an oil cup 2 is provided on the locking rod bushing 3, and an oil passage 9 is provided inside the locking rod bushing 3.

[0018] Furthermore, the oil cup 2 is equipped with an automatic lubrication device or a manual lubrication device.

[0019] To ensure long-lasting and effective lubrication and minimize frictional wear between the locking rod 6 and the bushing, an oil cup 2 is specially installed at a key location on the locking rod bushing 3. The oil cup 2, through a precision-machined oil passage 9 inside the bushing, can directly and accurately deliver lubricating oil to the friction surfaces where the locking rod 6 and the locking rod bushing 3 fit tightly. The oil cup 2 can be flexibly configured with two lubrication methods: an automatic lubrication device can automatically add lubricating oil in a metered amount according to preset time or conditions (such as operating cycle), achieving maintenance-free or low-maintenance operation; a manual lubrication device allows operators to manually replenish the lubricating oil periodically using an oil gun or oil can, providing an economical and controllable lubrication option. In this design, the oil passage 9 is an annular pipe surrounding the friction surface, and the annular pipe is arranged in multiple sets with a certain spacing. The annular and spaced oil passages can fully lubricate the locking rod 6, reduce the wear of the locking rod 6, and improve the service life of the locking device.

[0020] Furthermore, the locking rod 6 is made of 45 steel, and the locking rod pin 8 is detachable and installable.

[0021] After removing the locking pin 8, the locking rod 6 can be disassembled as a whole. The installation structure of the locking rod 6 is convenient for disassembly and assembly, which makes it easy to replace the worn locking rod 6. It is convenient for later maintenance and has good performance.

[0022] Furthermore, the locking cavity of the door cover bushing 4 gradually narrows from front to back, and the bevel length of the locking rod 6 is set to 90mm.

[0023] The door cover bushing 4 has a special locking cavity structure inside. This cavity has a tapered feature that gradually tapers from the front end (usually the assembly inlet end) to the rear end (usually the locking working end). This tapering design ensures that when the matching locking rod 6 is inserted axially, the wedge-shaped bevel at its front end can generate a stable and uniformly increasing radial contact pressure with the tapered cavity wall, thereby forming a strong self-locking effect when the door cover 5 is closed. The bevel structure at the front end of the locking rod 6, which generates the radial component force, has an effective contact length along the axial direction of the locking rod 6 that is specially set to 90 mm. This allows the locking rod 6 to provide sufficient frictional contact area to ensure locking force, avoid local stress concentration, and adapt to the bushing contraction gradient and the movement stroke of the locking rod 6, ultimately ensuring the stability and smooth operation of the door cover 5 when locked.

[0024] Furthermore, the locking cylinder 1, the locking rod bushing 3, and the door cover bushing 4 are all fixedly installed by bolts.

[0025] With this technical solution, the locking cylinder 1 is fixed to the front side of the front frame 7 by bolts, the locking rod bushing 3 is fixed to the rear side of the front frame 7 by bolts, and the door cover bushing 4 is fixed to the front side of the door cover 5 by bolts, and the positions of the locking cylinder 1, the locking rod bushing 3 and the door cover bushing 4 are set accordingly.

[0026] Working principle: The locking cylinder 1 pushes the locking rod 6, which in turn presses the locking rod 6 into the locking rod bushing 3 and the door cover bushing 4, thereby locking the door cover 5 and ensuring the stability of the locking. The locking rod 6 of the door cover 5 locking device is provided with an angled opening to improve the locking accuracy of the locking rod 6 and facilitate the removal of the locking rod 6 from the locking cavity. Through the oil cup 2 and the oil passage 9, lubricating oil can be directly and accurately delivered to the friction surface where the locking rod 6 and the locking rod bushing 3 are tightly fitted, thereby reducing the wear of the locking device and giving the locking device a longer service life. At the same time, after the locking rod pin 8 is removed, the locking rod 6 can be disassembled as a whole. The installation structure of the locking rod 6 is convenient for disassembly and assembly, and it is convenient to replace the worn locking rod 6. The subsequent maintenance is convenient and the use effect is good.

[0027] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In the description of this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this invention, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, those skilled in the art can combine different embodiments or examples and features of different embodiments or examples described in this invention without contradiction.

[0029] 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 hydraulic locking device for the door cover of a metal baling machine, mounted on the front frame (7) of the metal baling machine, characterized in that: The device includes a locking cylinder (1) located on the outside of the front frame (7). The rear side of the locking cylinder (1) is connected to a locking rod (6) via a locking rod pin (8). The inner side of the front frame (7) is provided with a locking rod bushing (3) that is compatible with the locking rod (6). The outer end of the front frame (7) is provided with a door cover (5). The door cover (5) is provided with a door cover bushing (4) that is compatible with the rod head of the locking rod (6). The locking rod bushing (3) and the door cover bushing (4) form a continuous locking cavity. The front end of the locking rod (6) is provided with a beveled structure.

2. The hydraulic locking device for the door cover of a metal baler according to claim 1, characterized in that: The locking rod bushing (3) is provided with an oil cup (2), and the inside of the locking rod bushing (3) is provided with an oil passage (9).

3. The hydraulic locking device for the door cover of a metal baler according to claim 1, characterized in that: The oil cup (2) is equipped with an automatic lubrication device or a manual lubrication device.

4. The hydraulic locking device for the door cover of a metal baler according to claim 1, characterized in that: The locking rod (6) is made of No. 45 steel, and the locking rod pin (8) is detachable.

5. The hydraulic locking device for the door cover of a metal baler according to claim 1, characterized in that: The locking cavity of the door cover bushing (4) gradually contracts from front to back, and the oblique length of the locking rod (6) is set to 90mm.

6. The hydraulic locking device for the door cover of a metal baler according to claim 1, characterized in that: The locking cylinder (1), locking rod bushing (3) and door cover bushing (4) are all fixedly installed by bolts.

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