A locking mechanism for a refuse truck compression chamber access door

Abstract

This utility model relates to the technical field of energy-saving sanitation vehicles, specifically a locking mechanism for the inspection door of a garbage truck's compression container. It includes a compression container back plate, an inspection door hinged to the compression container back plate, and a sealing assembly for pressing the inspection door against the compression container back plate. The sealing assembly includes a positioning shaft fixed to the compression container back plate, a pressure strip slidably connected to the positioning shaft, a stop strip pivotally connected to the positioning shaft, a pressing assembly threadedly connected to the stop strip, and a gap compensation assembly disposed on the stop strip. The pressing assembly presses the pressure strip against the inspection door. The gap compensation assembly includes a guide post slidably connected to the stop strip, a compression spring sleeved on the guide post, an inner pressure plate fixed to the inner end of the guide post, and an anti-detachment plate fixed to the outer end of the guide post. The inner pressure plate is located between the pressure strip and the stop strip. This device enables rapid adjustment of the compression of the compression container inspection door, making operation convenient; it also automatically compensates for sealing gaps, significantly improving sealing performance and operational efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of energy-saving sanitation vehicles, specifically a locking mechanism for the inspection door of a garbage truck's compression box. Background Technology

[0002] In urban sanitation work, the efficient operation of garbage trucks is crucial for maintaining environmental cleanliness. Garbage trucks use a compression container as their core component, which contains a pusher plate, a linkage plate, hydraulic cylinders, and other compression mechanisms. These mechanisms work together to achieve efficient compression of garbage.

[0003] To meet the needs of maintenance of the compression mechanism and cleaning of residual garbage in the compression chamber, an inspection door is usually installed on the lower front side of the compression box. However, since some liquid usually remains in the compression box, if the inspection door is not sealed tightly when closed, liquid sewage will leak out. This not only affects the airtightness of the garbage truck during transportation, but also pollutes the environment and violates the requirements of environmental protection operations. Therefore, garbage trucks incorporate sealing structures on their inspection doors, such as the existing technology "Adjustable Locking Mechanism for Garbage Bin Inspection Doors" (Publication No.: CN220448684U). This mechanism involves installing a sealing ring on the side of the inspection door near the access opening, and adjustable-depth U-bolts on the upper and lower sides of the door. A handle and connecting rod are mounted on the door surface, with a slider fixed to the end of the connecting rod. The slider's upper surface is a raised arch. Rotating the handle actuates the connecting rod, causing the slider to insert into the U-bolt. This causes the upper surface of the slider to press tightly against the U-bolt, and the reaction force of the U-bolt on the slider locks the inspection door. By adjusting the depth of the U-bolt's insertion into the garbage bin, the force exerted by the U-bolt on the slider can be controlled, thereby adjusting the pressure of the sealing ring on the access opening to ensure a tight seal. However, this existing technology still has the following technical problems:

[0004] The existing technology requires adjusting the depth of the U-bolt inserted into the garbage bin when adjusting the tightness of the sealing ring. The U-bolt is fixed to the garbage bin by two locking nuts, which are located on the inside and outside of the garbage bin, respectively. Therefore, it is necessary to loosen the locking nuts, adjust the insertion length of the U-bolt, and finally tighten the two locking nuts. The operation process is very cumbersome and inefficient. Moreover, under the vibration force of the vehicle during long-term driving, the nuts are also prone to loosening, resulting in poor sealing. Utility Model Content

[0005] This utility model provides a locking mechanism for the inspection door of a garbage truck compression box, which can solve the problem that in the existing technology, when adjusting the sealing and pressing force of the inspection door locking structure, it is necessary to adjust the locking nut, which is cumbersome and inefficient. In addition, the locking nut is also prone to loosening due to vibration of the vehicle, which can lead to poor sealing of the inspection door.

[0006] This application provides the following technical solution: a locking mechanism for the inspection door of a garbage truck compression box, including a compression box back plate, an inspection door hinged to the compression box back plate, and a sealing assembly for pressing the inspection door against the compression box back plate;

[0007] The sealing assembly includes a positioning shaft fixed to the back plate of the compression chamber, a pressure strip slidably connected to the positioning shaft, a stop strip pivotally connected to the positioning shaft, a clamping assembly threadedly connected to the stop strip, and a gap compensation assembly provided on the stop strip; the clamping assembly is used to press the pressure strip against the access door;

[0008] The gap compensation assembly includes a guide post slidably connected to the stop bar, a compression spring sleeved on the guide post, an inner pressure plate fixed to the inner end of the guide post, and an anti-detachment plate fixed to the outer end of the guide post. The inner pressure plate is located between the pressure bar and the stop bar.

[0009] Beneficial effects:

[0010] This system achieves dynamic adaptive sealing, improves operational convenience, and ensures airtightness. The pressure strip, directly driven by a clamping assembly, can quickly adjust its clamping force on the access door. When the gap between the access door and the compression chamber widens, the spring in the gap compensation assembly automatically releases its elasticity to push the inner pressure plate, ensuring the inner pressure plate maintains the pressure of the pressure strip and thus guaranteeing the clamping force. This allows for adaptive adjustment of the sealing clamping force, eliminating the need for cumbersome operations required by existing technologies and significantly improving operational convenience. Simultaneously, when vehicle vibration causes slight displacement of the access door, the elastic buffering effect of the spring dynamically compensates for the gap, preventing seal failure due to loose rigid connections. Compared to traditional fixed bolt structures, this significantly improves sealing performance and prevents liquid leakage from the compression chamber.

[0011] Furthermore, the clamping assembly includes a screw threadedly connected to the middle of the stop bar, a clamping block fixed to one end of the screw, and a handle fixed to the other end of the screw, with the clamping block located on the side close to the clamping bar.

[0012] Beneficial effects: By rotating the handle, the screw moves axially, allowing the clamping block to directly push the pressure strip. The clamping force can be adjusted in real time without the need for wrenches or other tools. Furthermore, the screw's threaded drive has precise displacement control characteristics, which can accurately control the pushing distance of the clamping block by rotating the handle. This linearly adjusts the clamping force of the pressure strip on the sealing ring, avoiding the problems of "over-tightening deformation" or "over-loosening leakage" that occur with traditional bolt adjustments, thus ensuring reliable sealing.

[0013] Furthermore, the compression box back plate is provided with a limiting shaft, the end of the limiting shaft is provided with a limiting plate, the limiting shaft is located directly below the positioning shaft, and the lower ends of the pressure strip and the stop strip are provided with limiting grooves, and the limiting shaft can be inserted into the limiting grooves.

[0014] Beneficial effects: The limiting shaft set on the back plate of the compression box can limit the pressure strip and the stop strip. By locking the limiting shaft into the limiting groove, the pressure strip and the stop strip are kept in a vertical state, preventing the pressure strip and the stop strip from shaking on the positioning shaft. It provides a clear positioning reference for the pressure strip and the stop strip, avoiding their displacement during the pressing of the maintenance door, and ensuring that the pressure strip is subjected to uniform pressure from the pressing block and the inner pressure plate, so as to ensure the pressing effect of the maintenance door.

[0015] Furthermore, an intermediate positioning block and an end positioning block are fixed on the positioning shaft, and the stop bar is rotatably connected to the positioning shaft and located between the intermediate positioning block and the end positioning block.

[0016] Beneficial effects: The setting of the middle positioning block and the end positioning block on the positioning shaft effectively prevents the stop bar from axially moving during vehicle bumps, ensuring the stability and reliability of its rotation trajectory; at the same time, the end positioning block can provide rigid support for the stop bar when the clamping block presses the pressure bar, ensuring that the pressure applied by the clamping block to the pressure bar is stable and reliable.

[0017] Furthermore, the compression box back plate is also provided with a support rod, the support rod and the positioning shaft are located on the same horizontal line, the compression box back plate is provided with two mounting plates, upper and lower, and a pin is vertically fixed between the mounting plates. One end of the support rod is rotatably connected to the pin, and the support rod can be inserted into the limiting groove on the pressure strip and the stop strip.

[0018] Beneficial effects: When it is necessary to open the maintenance door, the stop strip and pressure strip can be swung to a horizontal position, and the limiting grooves on the pressure strip and stop strip can be flipped onto the support rod. This keeps the support rod horizontal to the pressure strip, stop strip, and the pressing components and gap adjustment components on the stop strip, avoiding interference when opening the maintenance door, ensuring that the maintenance door can be opened and closed without obstruction, and improving the convenience of operation and maintenance efficiency. Attached Figure Description

[0019] Figure 1 This is the main structural view of the present invention.

[0020] Figure 2 for Figure 1 A magnified view of the left side.

[0021] Figure 3 for Figure 1 The front view after the middle general's guard strip and pressure strip have swung to a horizontal position.

[0022] Figure 4 for Figure 3 Top view. Detailed Implementation

[0023] The following detailed description illustrates the specific implementation method:

[0024] The markings in the accompanying drawings of the instruction manual include: compression box back plate 1, inspection port 101, end positioning block 2, inspection door 3, support rod 4, mounting plate 401, hinge 5, stop bar 6, handle 7, anti-detachment plate 8, limiting plate 9, positioning shaft 10, pressure bar 11, rectangular hole 111, intermediate positioning block 12, inner pressure plate 13, compression spring 14, guide post 15, sealing gasket 16, abutment block 17, screw 18, limiting shaft 19, and limiting groove 20.

[0025] Example 1

[0026] like Figures 1 to 4 As shown, a locking mechanism for a garbage truck compression container inspection door includes a compression container back plate 1, an inspection door 3 hinged to the compression container back plate 1 by a hinge 5, and a sealing assembly located on the opposite side of the hinge 5. The inspection door 3 is provided with a sealing gasket 16 on its inner side. The sealing gasket 16 is a square ring. The sealing assembly is used to press the inspection door 3 against the compression container back plate 1, so that the sealing gasket 16 seals the inspection port 101.

[0027] like Figure 2 As shown, the sealing assembly includes a positioning shaft 10 fixed on the back plate 1 of the compression box, a pressure strip 11 slidably connected to the positioning shaft 10, a stop strip 6 pivotally connected to the positioning shaft 10, a pressing assembly threadedly connected to the middle of the stop strip 6, and a gap compensation assembly disposed on both sides of the stop strip 6; the gap compensation assembly is symmetrically arranged with respect to the pressing assembly.

[0028] like Figure 2 As shown, a middle positioning block 12 and an end positioning block 2 are fixed on the positioning shaft 10. One end of the pressure strip 11 is rotatably connected to the rod of the positioning shaft 10 between the middle positioning block 12 and the compression box back plate 1. The pressure strip 11 can slide axially relative to the positioning shaft 10. The inner side of the pressure strip 11 is used to press the surface of the inspection door 3. A rectangular hole 111 is opened in the middle of the pressure strip 11. The stop strip 6 is rotatably connected to the positioning shaft 10 and is located between the middle positioning block 12 and the end positioning block 2.

[0029] The clamping assembly includes a screw 18 threadedly connected to the middle of the stop bar 6, a clamping block 17 fixed to one end of the screw 18, and a handle 7 fixed to the other end of the screw 18. The clamping block 17 is located on the side close to the pressure bar 11. In other embodiments besides this one, one end of the screw 18 is rotatably connected to the clamping block 17.

[0030] The gap compensation assembly includes a guide post 15 slidably connected to the stop bar 6, a compression spring 14 sleeved on the guide post 15, an inner pressure plate 13 fixed to the inner end of the guide post 15, and an anti-detachment plate 8 fixed to the outer end of the guide post 15. The inner pressure plate 13 is located between the pressure bar 11 and the stop bar 6, and the inner pressure plate 13 can contact the pressure bar 11.

[0031] like Figure 2As shown, the compression box back plate 1 is also provided with a limiting shaft 19, which is located directly below the positioning shaft 10. The end of the limiting shaft 19 is provided with a limiting plate 9, and the lower ends of the pressure strip 11 and the stop strip 6 are both provided with limiting grooves 20, so that the limiting shaft 19 can be inserted into the limiting grooves 20.

[0032] like Figure 1 and Figure 4 As shown, the compression box back plate 1 is also provided with a support rod 4. The support rod 4 and the positioning shaft 10 are located on the same horizontal line. The compression box back plate 1 is provided with two mounting plates 401, one above the other. A pin is vertically fixed between the mounting plates 401. One end of the support rod 4 is rotatably connected to the pin. The support rod 4 can be inserted into the limiting groove 20 on the pressure strip 11 and the stop strip 6.

[0033] The method of using this device is as follows:

[0034] When it is necessary to lock the inspection door 3, keep the pressure strip 11 and the stop strip 6 in a vertical position, and make the limiting groove 20 below the pressure strip 11 and the stop strip 6 fit on the rod of the limiting shaft 19 to maintain stability. Then tighten the handle 7 to make the abutment block 17 axially press the pressure strip 11, thereby making the pressure strip 11 press the inspection door 3 to complete the sealing of the inspection door 3. If the sealing gasket 16 on the inner side of the inspection door 3 is worn, causing a gap between the inspection door 3 and the compression box back plate 1, the elastic force of the compression spring 14 can drive the inner pressure plate 13 to continuously press the pressure strip 11, ensuring the pressure of the pressure strip 11 on the inspection door 3, to compensate and repair the gap, and achieve the effect of adaptive adjustment of the pressing force.

[0035] When it is necessary to open the inspection door 3, such as Figure 2 As shown, release handle 7 so that the inner pressure plate 13 no longer presses against the pressure strip 11, and leave a gap between the abutment block 17 and the pressure strip 11. At this time, both the pressure strip 11 and the stop strip 6 are in a rotatable state. Then, use one palm to grasp the pressure strip 11 and the stop strip 6 from the side, ensuring that the thumb is on the outer surface of the stop strip 6, and insert the other four fingers into the rectangular hole 111 of the pressure strip 11. Then, use the grip to slide the pressure strip 11 towards the stop strip 6, creating a gap between the pressure strip 11 and the access door 3. While keeping the pressure strip 11 firmly grasped, slide the pressure strip 11 and the stop strip 6 towards the door 3. Figure 3 The middle support rod 4 is swung in the direction of the swing. After it swings above the support rod 4, the other hand swings the support rod 4 out, so that the support is changed from the direction of the swing rod 4. Figure 1 The horizontal direction of the middle is swung out to Figure 4 In the vertical direction, the limiting grooves 20 on the stop strip 6 and the pressure strip 11 are then mounted on the rod part of the support rod 4, becoming... Figure 4 As shown in the diagram, the access door 3 can be opened without any interference.

[0036] The above are merely embodiments of this utility model, and the utility model is not limited to the field covered by this embodiment. Commonly known structures and characteristics in the solutions are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A locking mechanism for the maintenance door of a garbage truck's compression container, characterized in that: Includes a compression chamber back plate, an access door hinged to the compression chamber back plate, and a sealing assembly for pressing the access door against the compression chamber back plate; The sealing assembly includes a positioning shaft fixed to the back plate of the compression chamber, a pressure strip slidably connected to the positioning shaft, a stop strip pivotally connected to the positioning shaft, a clamping assembly threadedly connected to the stop strip, and a gap compensation assembly provided on the stop strip; the clamping assembly is used to press the pressure strip against the access door; The gap compensation assembly includes a guide post slidably connected to the stop bar, a compression spring sleeved on the guide post, an inner pressure plate fixed to the inner end of the guide post, and an anti-detachment plate fixed to the outer end of the guide post. The inner pressure plate is located between the pressure bar and the stop bar.

2. The locking mechanism for the maintenance door of a garbage truck compression container according to claim 1, characterized in that: The clamping assembly includes a screw threadedly connected to the middle of the stop bar, a clamping block fixed to one end of the screw, and a handle fixed to the other end of the screw. The clamping block is located on the side close to the clamping bar.

3. The locking mechanism for the maintenance door of a garbage truck compression container according to claim 2, characterized in that: The compression box back plate is provided with a limiting shaft, and the end of the limiting shaft is provided with a limiting plate. The limiting shaft is located directly below the positioning shaft. The lower ends of the pressure strip and the stop strip are provided with limiting grooves, and the limiting shaft can be inserted into the limiting grooves.

4. The locking mechanism for the inspection door of the compression box of a garbage truck according to claim 3, characterized in that: An intermediate positioning block and an end positioning block are fixed on the positioning shaft, and the stop bar is rotatably connected to the positioning shaft and located between the intermediate positioning block and the end positioning block.

5. The locking mechanism for the inspection door of the compression box of a garbage truck according to claim 4, characterized in that: The compression box back plate is also provided with a support rod. The support rod and the positioning shaft are located on the same horizontal line. The compression box back plate is provided with two mounting plates, one above the other. A pin is vertically fixed between the mounting plates. One end of the support rod is rotatably connected to the pin. The support rod can be inserted into the limiting groove on the pressure strip and the stop strip.

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