Locking device for rear door of garbage compression transfer box

Abstract

The invention discloses a garbage compression transfer box rear door locking device which comprises a rotating shaft, a first locking mechanism, a second locking mechanism and a rear blocking door which are arranged on a vehicle frame, the rotating shaft is transversely arranged on the vehicle frame, and the first locking mechanism and the second locking mechanism are symmetrically arranged; the first locking mechanism comprises a first locking hook, a second locking hook and a second locking hook, wherein the first locking hook is arranged on the rotating shaft; the driving part is connected with the rotating shaft so as to drive the rotating shaft to rotate; the lower end of the first connecting rod is connected with the first locking hook, the upper end of the first connecting rod is connected with a second locking hook, and the second locking hook is movably connected with the frame; one end of the third locking hook is connected with a second connecting rod, the second connecting rod is connected with the rotating shaft through a rotating shaft arm, and the third locking hook is movably connected with the frame. According to the garbage compression transfer box rear door locking device, the rear door is evenly stressed, the rear door can be prevented from deforming after being used for a long time, the sealing performance of the rear door is improved, and the service life is prolonged.

Description

Technical Field

[0001] This invention relates to the field of waste transfer machinery technology, and in particular to a locking device for the rear door of a waste compression and transfer container. Background Technology

[0002] Compactor-type garbage bins use a garbage compression mechanism to force garbage into the bin, increasing its load-bearing capacity. Most commercially available compactor-type garbage bins employ simple pin-type, hook-arm-type, or single-point hydraulic locking mechanisms for their rear doors. These traditional locking methods have revealed numerous shortcomings in practical applications, such as insufficient sealing and uneven locking force. Uneven locking force typically arises from single-point or a few-point locking methods, resulting in uneven distribution of locking force across the edges of the rear door. Under prolonged exposure to significant compressive forces, this can easily lead to localized deformation of the rear door or bin body, fatigue damage to the locking points, and potentially cause the rear door to fail to close properly, resulting in leaks or even door bursting, posing a significant safety hazard.

[0003] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide a locking device for the rear door of a garbage compression and transfer box, thereby overcoming the shortcomings of poor locking and water leakage or easy deformation of the rear door.

[0005] To achieve the above objectives, the present invention provides a locking device for the rear door of a waste compression and transfer container, comprising a rotating shaft mounted on a vehicle frame, a first locking mechanism, a second locking mechanism, and a rear stop. The rear stop is located at the rear door of the transfer container and is capable of being pressed and released. The rotating shaft is transversely mounted on the vehicle frame. The first locking mechanism and the second locking mechanism are symmetrically arranged and have identical structures. The first locking mechanism comprises: a first locking hook mounted on the rotating shaft; a driving member connected to the rotating shaft to drive the rotating shaft to rotate; and a first connecting rod, the lower end of which is connected to... The first locking hook is connected to the second locking hook at its upper end, and the second locking hook is movably connected to the vehicle frame; and the third locking hook is connected at one end to the second connecting rod, the second connecting rod is connected to the rotating shaft through the rotating shaft arm, and the third locking hook is movably connected to the vehicle frame; wherein, when the rear door of the transfer box is in the locked state, the first locking hook, the second locking hook and the third locking hook are engaged with the locking hook on the rear door of the transfer box, and the first locking hook and the second locking hook rotate in the same direction, while the third locking hook rotates in the opposite direction to the first locking hook and the second locking hook.

[0006] Preferably, in the above technical solution, the upper part of the second connecting rod is provided with an elongated hole, and the third locking hook is connected to the second connecting rod by passing through the elongated hole with a bolt.

[0007] Preferably, in the above technical solution, the middle part of the second locking hook is hinged to the vehicle frame; and / or the middle part of the third locking hook is hinged to the vehicle frame.

[0008] Preferably, in the above technical solution, there are multiple first locking hooks.

[0009] Preferably, in the above technical solution, the rear door is movably connected to the locking drive component via a connecting plate, and the locking drive component drives the rear door to flip.

[0010] Preferably, in the above technical solution, the rear door and the connecting plate are integrally formed and have an "L" shape. The connecting plates are respectively provided on both sides of the rear door, and the rear end of each connecting plate is connected to the locking drive component one by one.

[0011] Preferably, in the above technical solution, the driving component is a driving cylinder, the locking driving component is a locking cylinder, the driving cylinder and the locking cylinder are connected to a sequence valve through a hydraulic circuit, and the working of the driving cylinder and the locking cylinder is controlled by the sequence valve.

[0012] Preferably, in the above technical solution, the rear door is provided with a sealing strip.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The rear door locking device of the garbage compression and transfer box of the present invention locks the bottom and both sides of the rear door of the garbage box, and the locking on both sides is provided with two locking hooks, locking the rear door in multiple places. At the same time, a flip-up rear stop is provided at the rear door. When locking, the rear stop presses against the rear door, so that the rear door is subjected to uniform force, which can prevent the rear door from deforming easily after long-term use, improve the sealing performance of the rear door, and extend its service life. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the rear door locking device of the garbage compression and transfer box according to the present invention.

[0015] Figure 2 This is a schematic diagram of the rear side of the garbage compression and transfer box after the rear door is removed, according to the present invention.

[0016] Figure 3 This is a schematic diagram of the structure of the rear door flipping open in the rear door locking device of the garbage compression and transfer box according to the present invention.

[0017] Explanation of key figure labels: 1-Frame; 2-Shaft; 21-Shaft arm; 3-First locking mechanism; 31-First locking hook; 311-First locking hook seat; 32-Drive cylinder; 33-First connecting rod; 34-Second locking hook; 341-Second locking hook seat; 35-Third locking hook; 351-Third locking hook seat; 36-Second connecting rod; 361-Elongated hole; 4-Second locking mechanism; 5-Rear door; 51-Connecting plate; 52-Locking cylinder; 6-Hydraulic system; 61-Hydraulic quick connector; 62-Hydraulic pipeline; 63-Sequence valve; 7-Rear door. Detailed Implementation

[0018] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0019] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0020] like Figures 1 to 3 As shown, a rear door locking device for a garbage compression and transfer container according to a specific embodiment of the present invention includes a rotating shaft 2, a first locking mechanism 3, a second locking mechanism 4, a rear stop 5, and a hydraulic system 6, all mounted on a frame 1. The rear stop 5 is located at the rear door 7 of the transfer container and can be pressed and released. The rotating shaft 2 is horizontally mounted on the frame 1. The first locking mechanism 3 and the second locking mechanism 4 are symmetrically arranged, and the first locking mechanism 3 and the second locking mechanism 4 have the same structure.

[0021] The specific structure of the first locking mechanism is as follows: The first locking mechanism 3 includes a first locking hook 31, a driving component (driving cylinder 32), a first connecting rod 33, a second locking hook 34, and a third locking hook 35. There are multiple first locking hooks 31, which are mounted on the rotating shaft 2. The first locking mechanism 3 has two first locking hooks 31, and the second locking mechanism 4 also has two first locking hooks. There are a total of four first locking hooks 31 on the rotating shaft 2, evenly distributed. The driving cylinder 32 is connected to the hydraulic system 6, which includes a hydraulic quick connector 61, hydraulic lines 62, and a sequence valve 63. The driving cylinder 32 is connected to the hydraulic lines 62 via the hydraulic quick connector 61, and the flow of hydraulic oil is controlled by the sequence valve 63. The driving cylinder 32 is connected to the rotating shaft 2 to drive the rotating shaft 2 to rotate. The lower end of the first connecting rod 33 is connected to the rotating shaft 2 via the rotating shaft arm 21, and the upper end is connected to the second locking hook 34. The second locking hook 34 is hinged to the frame 1 in the middle to improve the stability of the second locking hook 34. The third locking hook 35 is hinged to the frame 1 in the middle and connected to the second link 36 at the rear end. The second link 36 is connected to the pivot 21 through the pivot arm 21.

[0022] In the case of the transfer box, the rear door 7 is in a locked state, and the first locking hook 31, the second locking hook 34 and the third locking hook 35 are engaged with the locking hook on the rear door 7. The first locking hook 31 and the second locking hook 34 rotate in the same direction, while the third locking hook 35 rotates in the opposite direction to the first locking hook 31 and the second locking hook 34.

[0023] Preferably, the upper part of the second connecting rod 36 is provided with an elongated hole 361, and the third locking hook 35 is connected to the second connecting rod 36 by a bolt passing through the elongated hole 361. When there is internal leakage in the drive cylinder 32, its piston rod automatically retracts a certain distance, forcing the first locking hook 31 and the first locking hook seat 311 to release from the rear door, and forcing the second locking hook 34 and the second locking hook seat 341 to release from the rear door. The second connecting rod 36 is provided with an elongated hole 361, and the second connecting rod 36 moves a corresponding distance in the elongated hole 361, but the third locking hook 35 will not rotate counterclockwise at the same time, causing the third locking hook 35 to separate from the third locking hook seat 351, thereby preventing the rear door from automatically disengaging.

[0024] Preferably, the rear stop 5 is movably connected to the locking drive (locking cylinder 52) via a connecting plate 51, and the rear stop 5 is driven to flip by the locking cylinder 52. The rear stop 5 and the connecting plate 51 are integrally formed in an "L" shape. Connecting plates are provided on both sides of the rear stop 5, and the rear end of each connecting plate 51 is connected to the locking cylinder 52 in a corresponding manner. The locking cylinder 52 is connected to the hydraulic system 6. The rear stop 5 is provided with a sealing strip. When it contacts and presses against the rear door 7, the rear stop also seals the rear door's feed inlet. The rear door 7 has a flip-up rear stop 5, which can be locked. When locked, the rear stop presses against the rear door, making the rear door bear the force evenly, which can prevent the rear door from deforming easily after long-term use, improve the sealing performance of the rear door, and extend its service life.

[0025] The working process of the rear door locking device of the waste compression and transfer box of the present invention is as follows:

[0026] Rear door locking: Hydraulic quick connector 61 connects to hydraulic oil circuit 62, and hydraulic oil circuit 62 is circulated, allowing the rear door 7 to lock. The rear door 7 is equipped with a first locking hook seat 311 corresponding to the first locking hook 31, a second locking hook seat 341 corresponding to the second locking hook 34, and a third locking hook seat 351 corresponding to the third locking hook 35. Under the action of the sequence valve 63 in hydraulic oil circuit 62, the drive cylinder 32 first drives the rotating shaft 2 to rotate counterclockwise. The first locking hook 31 rotates counterclockwise with the rotating shaft 2 and engages with the first locking hook seat 311, locking the rear door. At the same time, the rotating shaft 2 rotates counterclockwise, causing the first connecting rod 33 to move downward. The downward movement of the first connecting rod 33 causes the upper second locking hook 34 to rotate counterclockwise, engaging with the second locking hook seat 341 and locking the rear door. At the same time, the rotating shaft 2 rotates counterclockwise, driving the second connecting rod 36 to move upward through the rotating shaft arm. The third locking hook 35 located at the upper end of the second connecting rod 36 rotates clockwise. The clockwise rotation of the third locking hook 35 engages with the third locking hook seat 351, locking the back door.

[0027] After the hydraulic circuit 62 achieves the rear door locking action through the sequence valve 63, it then enters the locking cylinder 52 installed on the locking cylinder 53, driving the piston rod of the locking cylinder to retract. The rear door 5 flips down to the horizontal position, and the piston rod retracts until the rear door 5 presses against the rear door 7. At this time, the locking action of the rear door 7 is completed, and the rear door compresses the sealing strip of the garbage compression box, thereby achieving the sealing of the box and the locking of the rear door.

[0028] Rear door opening: Hydraulic quick connector 61 connects to hydraulic oil circuit 62, hydraulic oil circuit 62 is filled with oil, and rear door 7 can be opened.

[0029] Under the action of the sequence valve 63, hydraulic oil first enters the locking cylinder 52, driving the piston rod to extend, causing the rear door 5 to move a distance to the right and flip up to the top position of the housing, at which point the rear door 5 is fully open. Then, hydraulic oil enters the drive cylinder 32 through the sequence valve 63, driving the rotating shaft 2 to rotate clockwise, causing the first locking hook 31 to rotate clockwise and separate from the first locking hook seat 311, thus releasing the rear door.

[0030] Simultaneously, the first locking hook 31 rotates clockwise, causing the first connecting rod 33 to move upward. The upward movement of the first connecting rod 33 causes the upper second locking hook 34 to rotate clockwise. The clockwise rotation of the second locking hook 34 separates it from the second locking hook seat 341, releasing the rear door. At the same time, the rotating shaft 2 rotates clockwise, causing the second connecting rod 36 to move downward via the rotating shaft arm. The third locking hook 35, located at the upper end of the second connecting rod 36, rotates counterclockwise, separating it from the third locking hook seat 351, releasing the rear door.

[0031] The foregoing description of specific exemplary embodiments of the invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the claims and their equivalents.

Claims

1. A locking device for the rear door of a waste compression and transfer container, characterized in that, The system includes a pivot mounted on the frame, a first locking mechanism, a second locking mechanism, and a rear door. The rear door, capable of being pressed and released, is located at the rear door of the transfer box. The pivot is transversely mounted on the frame. The first and second locking mechanisms are symmetrically arranged and have identical structures. The first locking mechanism includes: A first locking hook is provided on the pivot; A driving component, which is connected to the rotating shaft, to drive the rotating shaft to rotate; The first connecting rod has its lower end connected to the pivot via a pivot arm, and its upper end connected to the second locking hook, which is movably connected to the vehicle frame; and The third locking hook has one end connected to the second connecting rod, the second connecting rod is connected to the rotating shaft through the rotating shaft arm, and the third locking hook is movably connected to the vehicle frame. When the rear door of the transfer box is locked, the first locking hook, the second locking hook, and the third locking hook are engaged with the locking hook on the rear door of the transfer box. The first locking hook and the second locking hook rotate in the same direction, while the third locking hook rotates in the opposite direction to the first locking hook and the second locking hook.

2. The locking device for the rear door of the waste compression and transfer container according to claim 1, characterized in that, The upper part of the second connecting rod is provided with an elongated hole, and the third locking hook is connected to the second connecting rod by passing through the elongated hole with a bolt.

3. The locking device for the rear door of the waste compression and transfer container according to claim 1, characterized in that, The middle part of the second locking hook is hinged to the vehicle frame; and / or the middle part of the third locking hook is hinged to the vehicle frame.

4. The locking device for the rear door of the waste compression and transfer container according to claim 1, characterized in that, There are multiple first locking hooks.

5. The locking device for the rear door of the waste compression and transfer container according to claim 1, characterized in that, The rear door is movably connected to the locking drive component via a connecting plate, and the locking drive component drives the rear door to flip.

6. The locking device for the rear door of the waste compression and transfer container according to claim 5, characterized in that, The rear door and the connecting plate are integrally formed in an "L" shape. The connecting plates are respectively provided on both sides of the rear door, and the rear end of each connecting plate is connected to the locking drive component one by one.

7. The locking device for the rear door of the waste compression and transfer container according to claim 5, characterized in that, The driving component is a driving cylinder, and the locking driving component is a locking cylinder. The driving cylinder and the locking cylinder are connected to a sequence valve through a hydraulic circuit, and the sequence valve controls the operation of the driving cylinder and the locking cylinder.

8. The locking device for the rear door of the waste compression and transfer container according to claim 1, characterized in that, The rear door is equipped with a sealing strip.

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