Garbage chamber rear pushing device
Patent Information
- Application Number
- CN202522354418.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-06
- Publication Date
- 2026-09-11
- Estimated Expiration
- 2035-11-06
AI Technical Summary
三伸缩油缸在完全伸出时，因为自重作用以及伸缩级数较多等原因会发生向下的挠曲，在使用过程中缸上零部件会发生变形、偏磨等情况，最终导致油缸失效，此时需到指定维修站点进行维修
[0010]由于采用了上述技术方案，垃圾厢后推装置，包括在垃圾厢内沿前后方向活动安装的挤压板，所述挤压板与所述垃圾厢的厢前壁之间铰接连接有后推油缸，所述后推油缸的壁侧铰接轴上套装有两个支撑连接耳板，两所述支撑连接耳板的下端共同固定设有支撑架，所述支撑架的自由端抵靠在所述厢前壁上；所述支撑架上俯仰摆动安装有支撑杆，所述支撑杆的自由端上设有抵靠在所述后推油缸的缸筒上的支撑部；所述支撑杆与所述壁侧铰接轴之间连接有支撑施力弹簧。本实用新型借助原后推油缸的壁侧铰接轴吊挂安装所述支撑架，在所述支撑杆弹性支撑在所述后推油缸上时，反作用力可使所述支撑架的自由端抵靠在所述厢前壁上，使用稳定。而所述支撑杆借助所述支撑施力弹簧提供对所述后推油缸的缸筒向上的支撑力，可以明显弱化后推油缸重力对自身结构的作用，明显减少挠曲影响，利于延长油缸使用寿命。本实用新型所述支撑架利用原后推油缸的壁侧铰接轴进行吊挂安装，支撑架上安装所述支撑杆，且支撑杆与所述壁侧铰接轴之间安装支撑施力弹簧，不用对厢体进行破坏性施工，利于作为后推油缸的辅助支撑手段在垃圾厢内实现改造应用。
Smart Images
Figure CN224740080U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of garbage truck technology, and in particular to a garbage compartment pusher device. Background Technology
[0002] Compactor garbage trucks are used for the collection and transfer of household waste. Their garbage compartments are equipped with a rear-pushing device. When garbage is fed into the compartment from the rear, the device pushes it backward, compressing the garbage to increase the truck's loading capacity. During unloading, opening the rear cover assembly allows the rear-pushing device to push the garbage out of the compartment. This device includes a compression plate that can move in the front-rear direction and a rear-pushing cylinder connecting the compression plate and the front wall of the garbage compartment. Because the compression plate has a large forward-backward range of motion, and the space between the compression plate and the front wall of the garbage compartment is small when it retracts to the front position, the rear-pushing cylinder must have a large extension stroke. Therefore, a three-telescopic cylinder is often used. When fully extended, the three-telescopic cylinder may deflect downwards due to its own weight and the multiple extension stages. During use, the cylinder components may deform or wear unevenly, eventually leading to cylinder failure. In this case, repair at a designated service station is required.
[0003] The repair work involves disassembling the old hydraulic cylinder and installing the new one. Since these cylinders typically weigh over 100kg each, the replacement work is extremely laborious and poses a significant safety risk. Furthermore, given the prevalence of cylinder failures, a high failure rate means shorter lifespans after each replacement, making repairs very arduous. Therefore, during the repair process, the technicians considered replacing the original push-pull cylinder with a larger diameter cylinder to mitigate the flexing issue due to its increased rigidity. However, this repair measure is too costly; the new cylinder alone costs 4000-5000 yuan. Even after replacement, the larger diameter cylinder would be significantly heavier, and despite its increased rigidity, the flexing effect would not be significantly improved. While the cylinder's lifespan would be extended, it would not be ideal. In addition to this measure, maintenance personnel also considered adding a cylinder support structure inside the garbage compartment to alleviate the deflection problem, while replacing the original cylinders. However, this solution requires destructive construction such as welding or drilling inside the garbage compartment to fix the structure. Due to requirements for the integrity of the garbage compartment walls, corrosion protection requirements, and garbage truck modification regulations, neither welding nor drilling is feasible, making this maintenance measure unfeasible. Therefore, an alternative measure that can significantly reduce the deflection effect without destructive construction of the compartment is needed to improve the current situation. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a garbage container pusher that significantly reduces the impact of deflection, helps extend the service life of the hydraulic cylinder, and does not require destructive construction of the container body.
[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a garbage compartment pusher device, including a squeezing plate that is movably installed in the garbage compartment along the front-rear direction. A pusher cylinder is hinged between the squeezing plate and the front wall of the garbage compartment. Two supporting connecting lugs are fitted on the wall-side hinge shaft of the pusher cylinder. A support frame is fixedly provided at the lower ends of the two supporting connecting lugs. The free end of the support frame abuts against the front wall of the compartment. A support rod is mounted on the support frame in a pitching and swinging manner. A support part is provided on the free end of the support rod that abuts against the cylinder of the pusher cylinder. A supporting force spring is connected between the support rod and the wall-side hinge shaft.
[0006] As a preferred technical solution, a spring connecting sleeve is fitted on the wall-side hinge shaft, a spring connecting buckle is fixedly provided on the spring connecting sleeve, a spring connecting pin is fixedly provided at the position of the support rod near the free end, and the supporting force spring is connected between the spring connecting pin and the spring connecting buckle.
[0007] As a preferred technical solution, two supporting force springs are connected between the support rod and the wall-side hinge shaft, and the two supporting force springs are respectively located on both sides of the rear push cylinder.
[0008] As a preferred technical solution, the support part includes a support wheel, and the wheel surface of the support wheel is provided with a concave surface that matches the outer surface of the cylinder of the rear push cylinder.
[0009] As a preferred technical solution, the support frame is provided with at least two swing shaft connection holes arranged along the direction close to or away from the wall-side hinge axis, and the swing connection shaft of the support rod is connected to one of the swing shaft connection holes.
[0010] Due to the adoption of the above technical solution, the garbage compartment push-back device includes a squeezing plate that is movably installed in the garbage compartment along the front-rear direction. A push-back cylinder is hinged between the squeezing plate and the front wall of the garbage compartment. Two supporting connecting ears are fitted onto the wall-side hinge shaft of the push-back cylinder. A support frame is fixedly mounted at the lower ends of the two supporting connecting ears, and the free end of the support frame abuts against the front wall of the compartment. A support rod is mounted on the support frame, and the free end of the support rod has a support portion that abuts against the cylinder barrel of the push-back cylinder. A supporting force-applying spring connects the support rod and the wall-side hinge shaft. This utility model uses the wall-side hinge shaft of the original push-back cylinder to suspend and install the support frame. When the support rod is elastically supported on the push-back cylinder, the reaction force allows the free end of the support frame to abut against the front wall of the compartment, ensuring stable operation. The support rod, with the aid of the supporting force spring, provides upward support to the cylinder of the rear-push cylinder, which significantly weakens the effect of the cylinder's gravity on its structure, reduces deflection, and extends the cylinder's service life. The support frame of this invention utilizes the wall-side hinge shaft of the original rear-push cylinder for suspension installation. The support rod is mounted on the support frame, and a supporting force spring is installed between the support rod and the wall-side hinge shaft. This eliminates the need for destructive construction of the container, making it suitable for retrofitting and applying as an auxiliary support for the rear-push cylinder within a garbage container. Attached Figure Description
[0011] The following figures are intended only to illustrate and explain the present invention and do not limit the scope of the present invention. Wherein: Figure 1 This is a structural schematic diagram of an embodiment of the present utility model; Figure 2 yes Figure 1 Enlarged schematic diagram of the central support structure; Figure 3 yes Figure 2 A-direction structural schematic diagram; Figure 4 yes Figure 1 Diagram showing the state of the hydraulic cylinder when it retracts.
[0012] In the diagram: 1-Garbage container; 11-Front wall of the container; 2-Squeezing plate; 3-Rear push cylinder; 31-Wall side hinge shaft; 32-Plate side hinge shaft; 33-Cylinder barrel; 34-First-stage telescopic structure; 4-Support connecting ear plate; 41-Support frame; 5-Support rod; 51-Support part; 52-Swing shaft connecting hole; 6-Support force spring; 61-Spring connecting sleeve; 62-Spring connecting buckle; 63-Spring connecting pin. Detailed Implementation
[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Undoubtedly, those skilled in the art will recognize that various modifications can be made to the described embodiments without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.
[0014] like Figure 1 and Figure 4 As shown, the garbage compartment push-back device includes a squeezing plate 2 that is movably installed in the garbage compartment 1 along the front-rear direction. A push-back cylinder 3 is hinged between the squeezing plate 2 and the front wall 11 of the garbage compartment 1. Specifically, the push-back cylinder 3 is hinged to the front wall 11 via a wall-side hinge shaft 31, and to the squeezing plate 2 via a plate-side hinge shaft 32. Conventionally, the bottom end of the push-back cylinder 3 is hinged to the front wall 11, and the piston end is hinged to the squeezing plate 2. This is well-known technology in the art and will not be elaborated further here.
[0015] like Figure 2 and Figure 3 As shown, two supporting connecting ear plates 4 are fitted on the wall-side hinge shaft 31 of the rear push cylinder 3. The lower ends of the two supporting connecting ear plates 4 are jointly fixed with a support frame 41. The free end of the support frame 41 abuts against the front wall 11 of the compartment. A support rod 5 is mounted on the support frame 41 in a pitching and swinging manner. The free end of the support rod 5 is provided with a support part 51 that abuts against the cylinder 33 of the rear push cylinder 3. A supporting force spring 6 is connected between the support rod 5 and the wall-side hinge shaft 31.
[0016] The supporting spring 6 provides a supporting force to the support rod 5 to support the rear-push cylinder 3. This supporting force can weaken the effect of the cylinder's gravity on its own structure, thereby reducing the deflection effect. It should be noted that in this embodiment, the means by which the support rod 5 provides a supporting force to the cylinder through spring force does not necessarily achieve a balance between the supporting force torque and the gravity torque of the rear-push cylinder 3. Its purpose is only to weaken the cylinder's own gravity torque through the supporting force torque of the support rod 5. Based on this, those skilled in the art can see that when the gravity torque is significantly weakened, the cylinder, relying on its own rigid guidance, will experience a significant reduction in deflection and uneven wear, thus significantly extending its service life.
[0017] Among them, such as Figure 2 and Figure 3As shown, in this embodiment, a spring connecting sleeve 61 is fitted onto the wall-side hinge shaft 31, and a spring connecting buckle 62 is fixedly provided on the spring connecting sleeve 61. A spring connecting pin 63 is fixedly provided near the free end of the support rod 5, and the supporting force spring 6 is connected between the spring connecting pin 63 and the spring connecting buckle 62. The connection of the supporting force spring 6 is achieved through the above means. Of course, the supporting force spring 6 is a tension spring. In addition, the spring connecting sleeve preferably uses axial limiting on the wall-side hinge shaft 31 to restrict its position to ensure reliable use; this axial limiting can be achieved by using a cotter pin or a retaining ring, etc. Similarly, the supporting force spring 6 is also axially positioned on the spring connecting pin 63, which can be achieved by opening a radial hole in the spring connecting pin 63 and inserting the corresponding end of the supporting force spring 6 into the radial hole.
[0018] Preferably, such as Figure 3 As shown, two support springs 6 are connected between the support rod 5 and the wall-side hinge shaft 31, and the two support springs 6 are located on both sides of the rear push cylinder 3. The two support springs 6 can promote stronger support force, and the symmetrical spring force helps to ensure stable operation.
[0019] like Figure 2 and Figure 3 As shown, the support part 51 includes a support wheel, and the wheel surface of the support wheel has a concave surface that matches the outer surface of the cylinder 33 of the rear push cylinder 3. When the rear push cylinder 3 is fully extended, the weight of the cylinder is greater closer to the cylinder 33, so the center of gravity of the rear push cylinder 3 is also close to the cylinder 33, approximately at the first-stage telescopic structure 34. Therefore, the position with the greatest deflection is also the first-stage telescopic structure 34, which is prone to deformation, uneven wear, or failure, i.e., the connection between the first-stage telescopic structure 34 and the cylinder 33. Accordingly, the support part 51 in this embodiment is used to support the cylinder 33, weakening the gravitational torque at the position of the cylinder 33, which can significantly reduce the deflection effect at the first-stage telescopic structure 34. On the other hand, the outer surface of the cylinder 33 is relatively smooth and there are no obvious steps. During the extension and retraction of the rear push cylinder 3, the support part 51 will undergo relative displacement in the axial direction of the cylinder 33. This relative displacement will be relatively smooth due to the relatively smooth outer surface of the cylinder 33, without any jamming. In this embodiment, the support part 51 is further configured as a support wheel, which can significantly reduce the resistance during relative displacement and ensure real-time support effect. Of course, as Figure 4 and Figure 1As shown, when the rear-push cylinder 3 is fully extended, the length of the supporting force spring 6 shortens and the spring force decreases. However, the angle between the supporting force spring 6 and the supporting rod 5 increases, and the angle between the supporting rod 5 and the cylinder 33 also increases. Therefore, the final supporting torque on the cylinder 33 does not change significantly. Accordingly, in this embodiment, where the aim is to weaken the gravitational torque, as long as the rear-push cylinder 3 is fully extended, the supporting rod 5 effectively weakens the gravitational torque, thus reducing the deflection effect. In actual installation, a suitable supporting force spring 6 can be selected according to the supporting force requirements to maximize the supporting force and significantly reduce the deflection effect.
[0020] Preferably, such as Figure 2 As shown, the support frame 41 has at least two swing shaft connection holes 52 arranged along the direction close to or away from the wall-side hinge shaft 31. The swing connecting shaft of the support rod 5 is connected to one of the swing shaft connection holes 52. By connecting the swing connecting shaft of the support rod 5 to different swing shaft connection holes 52, the distance between the support part 51 and the wall-side hinge shaft 31 will also change, thereby facilitating the use of different models of the rear push cylinder 3 in different vehicle models.
[0021] In this embodiment, the support frame 41 is suspended and installed using the wall-side hinge shaft 31 of the original rear push cylinder 3. When the support rod 5 is elastically supported on the rear push cylinder 3, the reaction force allows the free end of the support frame 41 to abut against the front wall 11 of the garbage compartment, ensuring stable operation. The support rod 5, with the aid of the support spring 6, provides upward support to the cylinder 33 of the rear push cylinder 3, significantly reducing the effect of the rear push cylinder 3's gravity on its structure, reducing deflection, and extending the cylinder's service life. In this embodiment, the support frame 41 is suspended and installed using the wall-side hinge shaft 31 of the original rear push cylinder 3. The support rod 5 is installed on the support frame 41, and the support spring 6 is installed between the support rod 5 and the wall-side hinge shaft 31. This eliminates the need for destructive construction of the garbage compartment, facilitating its application as an auxiliary support for the rear push cylinder 3 within the garbage compartment 1.
[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A garbage container push-back device, comprising a squeezing plate movably installed in the garbage container along the front-rear direction, wherein a push-back cylinder is hingedly connected between the squeezing plate and the front wall of the garbage container, characterized in that: Two supporting connecting lugs are fitted on the wall-side hinge shaft of the rear push cylinder. The lower ends of the two supporting connecting lugs are fixedly provided with a support frame. The free end of the support frame abuts against the front wall of the compartment. A support rod is mounted on the support frame in a pitching and swinging manner. The free end of the support rod is provided with a support part that abuts against the cylinder barrel of the rear push cylinder. A supporting force spring is connected between the support rod and the wall-side hinge shaft.
2. The refuse carriage pusher apparatus of claim 1, wherein: A spring connecting sleeve is fitted onto the wall-side hinge shaft, and a spring connecting buckle is fixedly provided on the spring connecting sleeve. A spring connecting pin is fixedly provided near the free end of the support rod, and the supporting force-applying spring is connected between the spring connecting pin and the spring connecting buckle.
3. The garbage container pusher as described in claim 1, characterized in that: Two support force springs are connected between the support rod and the wall-side hinge shaft, and the two support force springs are located on both sides of the rear push cylinder.
4. The garbage container pusher as described in claim 1, characterized in that: The support part includes a support wheel, and the wheel surface of the support wheel is provided with a concave surface that is adapted to the outer surface of the cylinder of the rear push cylinder.
5. The refuse carriage pusher apparatus of claim 1 wherein: The support frame is provided with at least two swing shaft connection holes arranged along the direction close to or away from the wall-side hinge axis, and the swing connection shaft of the support rod is connected to one of the swing shaft connection holes.