Guiding device for filler of back-loading compression garbage truck

Abstract

The invention belongs to the technical field of compression garbage truck accessories, and particularly relates to an after-loading compression garbage truck filler guide device which comprises a pin shaft, two groups of adjustable roller mechanisms and side roller mechanisms, the pin shaft is connected with a scraper, and the two groups of adjustable roller mechanisms are symmetrically mounted on two sides of the pin shaft and are in rolling contact with the upper inner wall and the lower inner wall of a guide rail; the side roller mechanisms are installed on the end faces of the pin shafts and make rolling contact with the inner side faces of the guide rails. The adjustable roller mechanism comprises a mandrel, a first supporting connecting rod, a second supporting connecting rod, two second rollers and a spring, the spring is installed between the first supporting connecting rod and the second supporting connecting rod, and the spring enables the second rollers to be in rolling contact with the upper inner wall or the lower inner wall of the guide rail all the time. The side roller mechanism comprises a mounting shaft and a first roller, and the first roller is in rolling contact with the inner side face of the guide rail. According to the invention, the operation of the filler scraper is more stable and reliable, the influence of noise is reduced, and the maintenance frequency is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of compression type garbage truck accessories, and in particular relates to a guide device for a filler of a rear-mounted compression type garbage truck. Background Art

[0002] The rear-loading compression garbage truck mainly includes a car body, a filler, a hydraulic system, a travel system, etc. The filler loads the garbage into the car body from the rear collection port and compresses the garbage through the compression plate to minimize the volume of the garbage, thereby improving the loading efficiency of the garbage truck, increasing the amount of garbage transported each time, reducing the number of transportations, and saving operating costs. The structure of the filler is shown in the Chinese invention patents CN201058742Y A compression garbage truck filler and CN201770246U compression garbage truck filler applied by our company.

[0003] When compressing garbage, the filler is usually equipped with a scraper and a slide plate, which work with a push plate to compress the garbage and store it inside the box. When unloading, the push plate also pushes the garbage out along the channel steel guide rails, which are set on both sides of the scraper for guidance. Figure 1 , 2 As shown, the scraper only rolls on the upper and lower surfaces of the guide rail, and the contact with the side of the guide rail is made with a nylon gasket. The nylon gasket will be worn out after a short time, thus affecting the smooth operation of the scraper.

[0004] At the same time, as the instructions Figure 1 As shown, since the roller of the filler scraper can only rotate in one direction, the roller only contacts and guides the upper or lower side of the guide rail, which has the following problems:

[0005] 1. The one-sided contact between the roller and the guide rail will cause uneven force on the scraper, which may cause unbalanced friction between the roller and the guide rail, increase the wear rate of the roller, and cause uneven wear of the roller in long-term use, reducing its service life and possibly causing deformation of the roller or the guide rail.

[0006] 2. Due to uneven force, the scraper of the filler may deviate or tilt during movement, increasing the risk of jamming. This will affect the smooth operation of the filler and may even cause system failure.

[0007] 3. One-sided contact between the roller and the guide rail will reduce the overall stability of the filler scraper, especially under heavy load conditions.

[0008] 4. The scraper shakes or vibrates during operation, causing noise. Summary of the invention

[0009] In view of the above-mentioned deficiencies in the prior art, the problem to be solved by the present invention is that the existing rear-mounted compression garbage truck filler adopts a traditional guide device, and the contact of the side of the guide rail uses a nylon gasket, which is easy to wear, thus affecting the smoothness of the scraper operation. At the same time, the roller of the feeder scraper only contacts and guides with either side of the guide rail, which will cause uneven wear and deformation of the roller, increase the risk of jamming of the filler roller, affect the overall stability, and also generate noise, resulting in a worse working environment. The present invention provides a guide device for the filler of a rear-mounted compression garbage truck, so that the guide of the filler scraper is more stable and reliable during operation, avoids jamming, reduces noise, and reduces the number of maintenance times.

[0010] In order to achieve the above-mentioned object, the present invention provides a guide device for a filler of a rear-mounted compression garbage truck, comprising a pin shaft, an adjustable roller mechanism, and a side roller mechanism. The pin shaft is connected to a scraper. The adjustable roller mechanism has two groups, which are symmetrically mounted on both sides of the pin shaft and are in rolling contact with the upper and lower inner walls of the guide rail; the side roller mechanism is mounted on the end face of the pin shaft and is in rolling contact with the inner side face of the guide rail.

[0011] The adjustable roller mechanism comprises a core shaft, a first supporting link, a second supporting link, two second rollers, and a spring. The roots of the first supporting link and the second supporting link are hinged on the core shaft and can rotate around the core shaft. The heads of the first supporting link and the second supporting link are respectively installed with second rollers that can rotate freely. The central axis of the second roller is parallel to the central axis of the pin. A spring is installed between the first supporting link and the second supporting link. The spring makes the second roller always keep rolling contact with the upper inner wall or the lower inner wall of the guide rail.

[0012] The side roller mechanism includes a mounting shaft and a first roller. A rectangular hole is provided on the end face of the pin shaft that is not connected to the scraper. The mounting shaft and the first roller are installed in the rectangular hole. Part of the wheel surface of the first roller is exposed through the rectangular hole. The first roller rotates freely around the mounting shaft, and the first roller maintains rolling contact with the inner side surface of the guide rail.

[0013] According to a guiding device in yet another embodiment of the present invention or any of the aforementioned embodiments, two symmetrical grooves are arranged on the cylindrical surface of the pin shaft, and the adjustable roller mechanism is installed in the grooves.

[0014] According to a guiding device in yet another embodiment of the present invention or any of the aforementioned embodiments, convex columns are arranged on the sides of the first supporting link and the second supporting link, and the spring is installed on the convex columns.

[0015] According to a guiding device of another embodiment of the present invention or any of the aforementioned embodiments, a through-axis hole is provided on the end face of the pin shaft, the through-axis hole avoids the insert block and the rectangular hole, and the core shaft is installed and disassembled through the through-axis hole.

[0016] According to another embodiment of the guiding device of the present invention or any of the aforementioned embodiments, protrusions are respectively provided at the roots of the first support link and the second support link connected to the core shaft, and the protrusions rotate on the same circle. When the first support link and the second support link rotate, the protrusions limit the rotation angle range of the first support link and the second support link.

[0017] According to another embodiment of the guide device of the present invention or any of the aforementioned embodiments, the mounting shaft is installed between two inserts, the inserts are rectangular or trapezoidal, the inserts are inserted on both sides of the rectangular holes of the pin shaft, and the distance by which the first roller extends out of the rectangular hole is adjusted by adjusting the insertion depth of the inserts to maintain rolling contact with the inner side surface of the guide rail.

[0018] According to another embodiment of the present invention or the guiding device of any of the aforementioned embodiments, locking holes are arranged on the cylindrical surface of the pin shaft, the locking holes correspond to the two inserts respectively, and screws or bolts are installed in the locking holes to lock the inserts.

[0019] Beneficial effects of the present invention:

[0020] The guide device for the rear-loading compression garbage truck filler of the present invention adopts an adjustable roller mechanism and a side roller mechanism. The spring of the adjustable roller mechanism can ensure that the second roller always keeps in contact with the inner side surfaces of the upper and lower parts of the guide rail, so that the second roller is evenly stressed, avoiding deviation or tilting, making the filler scraper run more stably and reliably, and reducing the impact of noise. The contact between the guide device of the present invention and the inner side surface of the guide rail is completed by the first roller. The first roller replaces the nylon gasket and changes to rolling friction, which reduces friction loss, ensures the smooth operation of the scraper, and reduces the number of maintenance times. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a partial cross-sectional schematic diagram of the guide device of the conventional rear-loading compression garbage truck filler according to the present invention, which cooperates with the guide rail;

[0022] Figure 2 It is a three-dimensional schematic diagram of a guide device for a conventional rear-loading compression garbage truck filler according to the present invention;

[0023] Figure 3 It is a front view schematic diagram of the guide device of the rear-loading compression garbage truck filler of the present invention;

[0024] Figure 4 It is a three-dimensional schematic diagram of the guide device of the rear-loading compression garbage truck filler according to the present invention;

[0025] Figure 5 It is a top view schematic diagram of the guide device for the rear-loading compression garbage truck filler of the present invention;

[0026] Figure 6 It is a three-dimensional enlarged schematic diagram of the adjustable roller mechanism of the present invention;

[0027] Figure 7 It is an enlarged schematic diagram of the assembly of the side roller mechanism of the present invention;

[0028] In the figure: 1. pin; 2. first roller; 3. second roller; 4. first supporting link; 5. spring; 6. second supporting link; 7. insert; 8. locking hole; 9. through-shaft hole; 10. core shaft; 11. mounting shaft; 12. guide rail. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figure 3 , 4 As shown, a guide device for a rear-mounted compression garbage truck filler includes a pin shaft 1, an adjustable roller mechanism, and a side roller mechanism. The pin shaft 1 is connected to a scraper. Two symmetrical grooves are arranged on the cylindrical surface of the pin shaft 1, and the adjustable roller mechanism is installed in the grooves. There are two groups of adjustable roller mechanisms, which are symmetrically installed on both sides of the pin shaft 1 and are in rolling contact with the upper and lower inner walls of the guide rail 12; the side roller mechanism is installed on the end face of the pin shaft 1 and is in rolling contact with the inner side face of the guide rail 12.

[0031] like Figure 3 , 5 As shown in Figures 1 and 6, the adjustable roller mechanism includes a core shaft 10, a first supporting link 4, a second supporting link 6, two second rollers 3, and a spring 5. The roots of the first supporting link 4 and the second supporting link 6 are hinged on the core shaft 10 and can rotate around the core shaft 10. A through-shaft hole 9 is provided on the end surface of the pin shaft 1. The through-shaft hole 9 avoids the insert block 7 and the rectangular hole. The core shaft 10 is installed and disassembled through the through-shaft hole 9. The heads of the first supporting link 4 and the second supporting link 6 are respectively installed with freely rotatable second rollers 3. The central axis of the second roller 3 is parallel to the central axis of the pin shaft 1. A spring 5 is installed between the first supporting link 4 and the second supporting link 6. The spring 5 keeps the second roller 3 in rolling contact with the upper inner wall or the lower inner wall of the guide rail 12 at all times. Bosses are provided on the sides of the first supporting link 4 and the second supporting link 6, and the spring 5 is installed on the bosses. The roots of the first supporting link 4 and the second supporting link 6 connected to the core shaft 10 are respectively provided with protrusions, and the protrusions rotate on the same circle. When the first supporting link 4 and the second supporting link 6 rotate, the protrusions limit the rotation angle range of the first supporting link 4 and the second supporting link 6.

[0032] like Figure 4 , 7 As shown, the side roller mechanism includes a mounting shaft 11 and a first roller 2. A rectangular hole is provided on the end face of the pin shaft 1 that is not connected to the scraper. The mounting shaft 11 and the first roller 2 are installed in the rectangular hole. Part of the wheel surface of the first roller 2 is exposed through the rectangular hole. The first roller 2 rotates freely around the mounting shaft 11, and the first roller 2 maintains rolling contact with the inner side surface of the guide rail 12.

[0033] The mounting shaft 11 is installed between two inserts 7, which are rectangular or trapezoidal. The inserts 7 are inserted on both sides of the rectangular hole of the pin shaft 1. By adjusting the insertion depth of the inserts 7, the distance of the first roller 2 extending out of the rectangular hole is adjusted to maintain rolling contact with the inner side of the guide rail 12. Locking holes 8 are provided on the cylindrical surface of the pin shaft 1, and the locking holes 8 correspond to the two inserts 7 respectively. Screws or bolts are installed in the locking holes 8 to lock the inserts 7.

[0034] Working principle of the present invention:

[0035] like Figure 1 , 2 As shown, the rear-loading compression garbage trucks currently used in the society can be divided into two types according to the filler guide rail 12, which are straight guide rail 12 type and curved guide rail 12 type, and the movement of the two sides of the scraper in the filler is divided into the slider type of the straight guide rail 12 and the roller type of the curved guide rail 12. The rollers of the filler guide rail 12 of the rear-loading compression garbage truck originally used only roll on the upper and lower surfaces of the guide rail 12, and the contact with the side of the guide rail 12 uses nylon gaskets, which will be worn out after a short time, thereby affecting the smoothness of the scraper operation.

[0036] like Figure 3-7 As shown, the present invention improves the pin shaft 1 on the basis of the original guide device, and sets two sets of symmetrical adjustable roller mechanisms on the side. Each set of adjustable roller mechanisms includes two second rollers 3. The first supporting link 4 and the second supporting link 6 connected by the spring 5 make the two second rollers 3 always contact the upper inner wall and the lower inner wall of the guide rail 12. The supporting link and the roller connected by the spring 5 can evenly disperse the lateral force of the scraper during the movement, and avoid the single-side roller from bearing excessive load. This not only prolongs the service life of the roller and the guide rail 12, but also reduces the risk of uneven wear. That is, the pin shaft 1 is guided more evenly and stably with the upper and lower inner walls of the channel steel guide rail 12 through the two sets of adjustable roller mechanisms. On the other hand, the side end of the pin shaft 1 close to the guide rail 12 is hollowed out to leave space for installing the first roller 2, the insert 7, and the mounting shaft 11, so that the contact between the side roller mechanism and the side of the guide rail 12 is completed by the first roller 2. The first roller 2 rolls on the side of the guide rail 12, which reduces friction loss and ensures the smooth operation of the scraper.

[0037] Due to more uniform force and less wear, the service life of the rollers and guide rails 12 is extended, thereby reducing the frequency of maintenance and replacement. This reduces operating costs and reduces the downtime of the rear-loading compactor garbage truck due to maintenance.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above implementation is only to illustrate the technical concept and features of the present invention, and its purpose is to enable people familiar with this technology to understand the content of the present invention and implement it, and it cannot be used to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A guide device for a rear-mounted compression garbage truck filler, characterized in that: The invention comprises a pin shaft (1), an adjustable roller mechanism and a side roller mechanism. The pin shaft (1) is connected to a scraper. The adjustable roller mechanism has two groups, which are symmetrically mounted on both sides of the pin shaft (1) and are in rolling contact with the upper and lower inner walls of a guide rail (12). The side roller mechanism is mounted on the end surface of the pin shaft (1) and is in rolling contact with the inner side surface of the guide rail (12). The adjustable roller mechanism comprises a core shaft (10), a first supporting link (4), a second supporting link (6), two second rollers (3), and a spring (5); the roots of the first supporting link (4) and the second supporting link (6) are hinged on the core shaft (10) and can rotate around the core shaft (10); the heads of the first supporting link (4) and the second supporting link (6) are respectively provided with second rollers (3) that can rotate freely; the central axis of the second roller (3) is parallel to the central axis of the pin shaft (1); a spring (5) is installed between the first supporting link (4) and the second supporting link (6); the spring (5) enables the second roller (3) to always maintain rolling contact with the upper inner wall or the lower inner wall of the guide rail (12); The side roller mechanism comprises a mounting shaft (11) and a first roller (2); a rectangular hole is arranged on the end face of the pin shaft (1) not connected to the scraper, the mounting shaft (11) and the first roller (2) are installed in the rectangular hole, a part of the wheel surface of the first roller (2) is exposed out of the rectangular hole, the first roller (2) rotates freely around the mounting shaft (11), and the first roller (2) maintains rolling contact with the inner side surface of the guide rail (12).

2. A guide device for a rear-loading compression garbage truck filler according to claim 1, characterized in that: Two symmetrical grooves are arranged on the cylindrical surface of the pin shaft (1), and the adjustable roller mechanism is installed in the grooves.

3. A guide device for a rear-loading compression garbage truck filler according to claim 1, characterized in that: The first supporting link (4) and the second supporting link (6) are provided with convex columns on their sides, and the spring (5) is mounted on the convex columns.

4. A guide device for a rear-loading compression garbage truck filler according to claim 1, characterized in that: A through-shaft hole (9) is arranged on the end surface of the pin shaft (1), the through-shaft hole (9) avoids the insert block (7) and the rectangular hole, and the core shaft (10) is installed and disassembled through the through-shaft hole (9).

5. A guide device for a rear-loading compression garbage truck filler according to claim 1, characterized in that: The roots of the first supporting link (4) and the second supporting link (6) connected to the core shaft (10) are respectively provided with protrusions, and the protrusions rotate on the same circle. When the first supporting link (4) and the second supporting link (6) rotate, the protrusions limit the rotation angle range of the first supporting link (4) and the second supporting link (6).

6. A guide device for a rear-loading compression garbage truck filler according to claim 1, characterized in that: The mounting shaft (11) is installed between two inserts (7), the inserts (7) are rectangular or trapezoidal, and the inserts (7) are inserted into the two sides of the rectangular hole of the pin shaft (1). By adjusting the insertion depth of the inserts (7), the distance that the first roller (2) protrudes from the rectangular hole is adjusted to maintain rolling contact with the inner side of the guide rail (12).

7. A guide device for a rear-loading compression garbage truck filler according to claim 6, characterized in that: The pin shaft (1) is provided with a locking hole (8) on its cylindrical surface, the locking holes (8) respectively corresponding to the two inserts (7), and screws or bolts are installed in the locking holes (8) to lock the inserts (7).

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