Supporting arm, supporting arm structure and garbage truck

Abstract

According to the supporting arm, the supporting arm structure and the garbage truck, the supporting arm and the lifting arm which are connected are used for forming the supporting arm, and due to the fact that the lifting arm can stretch out and draw back relative to the supporting arm, the length of the whole supporting arm can be adjusted, and the length of the supporting arm can be flexibly adjusted according to the position of a hanging lug shaft on a garbage can; it is guaranteed that the length of the supporting arm is matched with the position of the hanging lug shaft, the problems that due to the fact that the length is too short, barrel hanging feeding cannot be achieved, due to the fact that the length is too long, feeding is unstable, and the discharging efficiency is affected are solved, and therefore stable barrel hanging feeding can be guaranteed, and the discharging efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of sanitation vehicle technology, and in particular to a support arm, a support arm structure, and a garbage truck. Background Technology

[0002] With the continuous improvement of urban civilization and sanitation, the bin-based disposal of urban waste has gradually become the norm. The waste in urban garbage bins is usually collected, compressed, and transported to waste treatment stations by garbage trucks.

[0003] When collecting trash from the trash can, the support arm opens outward to allow the hanging lugs of the trash can to be inserted into the support arm slot. Then, the trash can is lifted to its highest point and flipped over to allow the trash inside to be poured into the garbage container of the garbage truck. Finally, the trash can is lowered down.

[0004] However, the position of the hanging lugs on the current trash cans varies depending on the model and size, which makes it impossible for the support arm length to be adapted to the position of the hanging lugs. This results in problems such as the inability to hang the can for feeding, unstable feeding, and a small unloading angle that affects unloading efficiency. Utility Model Content

[0005] The purpose of this application is to provide a support arm, a support arm structure, and a garbage truck, wherein the length of the support arm can be flexibly adjusted according to the position of the hanging trunnion on the garbage bin, ensuring that the length of the support arm matches the position of the hanging trunnion, thereby ensuring stable loading of the garbage bin and improving unloading efficiency.

[0006] The embodiments of this application can be implemented as follows:

[0007] In a first aspect, the present invention provides a support arm, including a connected support arm and a lifting arm, wherein the end of the support arm away from the lifting arm is used to hinge the support arm bracket, and the end of the lifting arm away from the support arm is provided with a slot for inserting a hanging trunnion.

[0008] The lifting arm is telescopic relative to the supporting arm.

[0009] In an optional embodiment, the lifting arm and the support arm are detachably connected by fasteners, and the connection position is adjustable.

[0010] In an optional embodiment, the lifting arm is provided with a plurality of first connecting holes, and the support arm is provided with a plurality of second connecting holes;

[0011] The fastener may be selectively inserted into one of the first connecting holes and one of the second connecting holes.

[0012] In an optional embodiment, the support arm further includes a positioning post, which can be selectively installed in one of the first connecting holes;

[0013] The positioning post is provided with a mating hole, and the positioning post can be selectively inserted into one of the second connecting holes. The fastener extends into the mating hole and is fixed relative to the mating hole.

[0014] In an optional embodiment, the mating hole is a threaded hole;

[0015] The fastener includes a screw that passes through the second connecting hole from the side of the support arm facing away from the lifting arm and is threaded into the mating hole.

[0016] In an optional embodiment, the end face of the positioning post inserted into the second connecting hole is flush with or recessed relative to the surface of the support arm facing away from the lifting arm.

[0017] In an optional embodiment, each of the first connecting holes is arranged in a rectangular array along the length direction of the lifting arm, and each of the second connecting holes is arranged in a rectangular array along the length direction of the support arm.

[0018] Along the length of the support arm, there is at least one first connecting hole and a second connecting hole between the two fasteners.

[0019] Secondly, this utility model provides a support arm structure, comprising:

[0020] Support arm bracket;

[0021] The support arm of any of the foregoing embodiments is hinged to the support arm bracket;

[0022] The support arm bracket is equipped with an adsorption element, which can adsorb the support arm or the lifting arm.

[0023] In an optional embodiment, the adsorption element includes a magnet and an adjustment pad, the magnet being mounted to the support arm bracket via the adjustment pad;

[0024] And / or,

[0025] The support arm bracket is also provided with a limiting block, the thickness of which is greater than the thickness of the adsorption member, and the limiting block is used to abut against the support arm or the lifting arm.

[0026] Thirdly, this utility model provides a garbage truck, including the support arm structure described in the foregoing embodiments.

[0027] Compared with the prior art, the beneficial effects of the embodiments of this application include, for example:

[0028] The support arm is constructed by connecting the support arm and the lifting arm. Since the lifting arm is telescopic relative to the support arm, the length of the entire support arm can be adjusted. This allows for flexible adjustment of the support arm length according to the position of the hanging trunnion on the garbage can, ensuring that the length of the support arm matches the position of the hanging trunnion. This avoids problems such as the inability to hang the garbage can for loading due to being too short, and unstable loading and unloading efficiency due to being too long, thereby ensuring stable loading of the garbage can and improving unloading efficiency. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of a support arm structure in the prior art;

[0031] Figure 2 This is a diagram of a trash can;

[0032] Figure 3 This is a schematic diagram of a boom-mounted bucket feeding system in the prior art;

[0033] Figure 4 This is a schematic diagram of the lifting and unloading process in the existing technology;

[0034] Figure 5 This is a schematic diagram of the support arm in one embodiment of this application;

[0035] Figure 6 for Figure 5 A sectional view;

[0036] Figure 7 for Figure 6 Exploded view;

[0037] Figure 8 This is a schematic diagram of the arm locking limit in the prior art;

[0038] Figure 9 for Figure 8 A partial schematic diagram;

[0039] Figure 10 This is a schematic diagram of the support arm structure in one embodiment of this application;

[0040] Figure 11 for Figure 10 AA sectional view.

[0041] Icons: 100-Tipping mechanism; 110-Support arm bracket; 120-Support arm; 121-Slot; 123-Support arm; 1230-Second connecting hole; 124-Lifting arm; 1240-First connecting hole; 126-Fastener; 127-Positioning post; 1270-Matching hole; 130-Clamping plate; 140-Spring; 150-Pin seat; 151-Baffle plate; 152-Pin; 160-Adhesive element; 161-Magnet; 162-Adjusting pad; 170-Limiting block; 180-Lifting arm; 200-Trash can; 210-Hanging trunnion. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0044] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0045] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0046] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0047] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] In existing technology, the 120-type support arm is typically as follows: Figure 1 In the structure shown, the left and right support arms 120 are hinged to both ends of the support arm bracket 110. In the non-operating state, the left and right support arms 120 rotate inward around points O1 and O2 respectively, and under the action of the spring 140, the support arms 120 contact the upper limit block 170 of the support arm bracket 110. In the operating state, the left and right support arms 120 rotate outward around points O1 and O2 respectively, and under the action of the spring 140, the support arms 120 contact the outer limiting device of the support arm bracket 110.

[0049] The 120 support arm typically needs to meet the following functions:

[0050] 1. With the support arm 120 open, manually push the hanging lug 210 of the trash can 200 above the slot 121 of the support arm 120, operate the tilting mechanism 100 to rise, and the support arm 120 will guide the hanging lug 210 of the trash can 200 into the bottom of the slot 121 of the support arm 120 and then lift the trash can 200.

[0051] Second, after being raised to the highest position, the tipping mechanism 100 tilts the trash can 200. When the support arm 120 flips, the card plate 130 rotates under the action of gravity, which closes the card slot 121 of the support arm 120 and prevents the trash can 200's hanging ears from falling off the card slot 121.

[0052] However, reference Figures 2 to 4 Currently, depending on the size and model of the trash can 200, the position of the hanging trunnion 210 on the trash can 200 is also different. Therefore, the size of the gap D between the trash can 200 and the tipping mechanism 100 when hanging the trash can also varies. The ideal situation is that the gap D is zero, and the length of the support arm 120 is just right. However, the working length H of the support arm 120 and the shape of the slot 121 are fixed and remain unchanged. Therefore, the following situations will occur when loading and unloading different trash cans 200:

[0053] 1) The support arm 120 is too short, which makes it impossible for the hanging trunnion 210 to be inserted into the bottom of the slot 121, directly causing the inability to hang the bucket for feeding.

[0054] 2) The support arm 120 is too long. On the one hand, during the process of lifting the garbage bin 200 off the ground, there is a gap D between the garbage bin 200 and the tipping mechanism 100. Therefore, the bin body is not initially in contact with the lifting arm 180 of the tipping mechanism 100. As a result, only the two side hanging trunnions 210 of the garbage bin 200 are supported, which will cause it to swing until the bin body contacts the lifting arm 180 and is supported, resulting in unstable bin loading. On the other hand, after the garbage bin 200 is lifted to its maximum height, the garbage bin 200 presses on the lifting arm 180 due to its own weight. Since the maximum lifting height of the lifting arm 180 is fixed, the excessive length of the support arm 120 will also increase the height of the hanging trunnions 210, resulting in a smaller unloading angle α (i.e., the angle between the depth direction of the garbage bin 200 and the horizontal direction), which in turn affects the unloading efficiency.

[0055] To address the aforementioned issues, the inventors have developed a support arm 120 and a tipping mechanism 100 with the support arm 120. The support arm 120 can be length-adjusted according to the position of the hanging trunnion 210 on the garbage bin 200, thereby ensuring stable loading of the bin and improving unloading efficiency.

[0056] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0057] refer to Figures 5 to 7 This application discloses a support arm 120, which includes a connected support arm 123 and a lifting arm 124. The end of the support arm 123 away from the lifting arm 124 is used to hinge the support arm bracket 110, so that the entire support arm 120 can be vertically extended outward or folded inward on the support arm bracket 110. The end of the support arm 120 away from the support arm 123 is provided with a slot 121 for the hanging trunnion 210 to be inserted to realize the bucket hanging function, and the hanging trunnion 210 can be removed from the slot 121 after unloading to realize the bucket unloading function.

[0058] The lifting arm 124 is telescopic relative to the support arm 123.

[0059] As described above, the support arm 120 is formed by connecting the lifting arm 124 and the support arm 123. Since the lifting arm 124 is telescopic relative to the support arm 123, the length of the entire support arm 120 can be adjusted. Thus, the length of the support arm 120 can be flexibly adjusted according to the position of the hanging trunnion 210 on the garbage can 200, ensuring that the length of the support arm 120 matches the position of the hanging trunnion 210. This avoids problems such as the inability to hang the can for loading due to being too short or the instability of loading and the impact on unloading efficiency due to being too long, thereby ensuring stable loading of the can and improving unloading efficiency.

[0060] Optionally, the lifting arm 124 and the support arm 123 are detachably connected by fasteners 126, and the connection position is adjustable. That is, a certain position on the lifting arm 124 can be connected to a different position on the support arm 123, and a certain position on the support arm 123 can be connected to a different position on the lifting arm 124, so as to realize the length adjustment of the entire support arm 120.

[0061] Specifically, the lifting arm 124 is provided with multiple first connecting holes 1240, and the support arm 123 is provided with multiple second connecting holes 1230; a fastener 126 can be selectively inserted into one first connecting hole 1240 and one second connecting hole 1230, so that the fastener 126 can be used to connect and fix two adjacent support arms 123 and lifting arms 124. Moreover, the length of the entire support arm 120 can be adjusted accordingly by inserting the fastener 126 into the first connecting holes 1240 at different positions on the lifting arm 124 and the second connecting holes 1230 at different positions on the support arm 123.

[0062] The support arm also includes a positioning post 127, which can be selectively installed in a first connecting hole 1240. The positioning post 127 is provided with a mating hole 1270 and is inserted into a second connecting hole 1230. The fastener 126 extends into the mating hole 1270 and is fixed relative to the mating hole 1270. In this way, after the support arm 123 and the lifting arm 124 are fitted together, the positioning post 127 is inserted into the second connecting hole 1230 to pre-position the relative positions of the support arm 123 and the lifting arm 124. Then, the fastener 126 is used to connect and fix the support arm 123 and the lifting arm 124, which makes the assembly more convenient. Moreover, the positioning post 127 can also improve the connection strength between the support arm 123 and the lifting arm 124. One way to adjust the overall length of the support arm is to install positioning posts 127 in a portion of the first connection holes 1240, and then insert the positioning posts 127 into different second connection holes 1230 and connect the support arm 123 and the lifting arm 124 with fasteners 126.

[0063] The support arm 123 and the lifting arm 124 can be detachably connected by screws. For example, the mating hole 1270 is a threaded hole. The fastener 126 includes screws. The number of screws and positioning pins 127 are the same and correspond one-to-one. The screws pass through the second connecting hole 1230 from the side of the support arm 123 facing away from the lifting arm 124 and are threaded into the first connecting hole 1240, thereby connecting and fixing the support arm 123 and the lifting arm 124.

[0064] To ensure that the support arm 123 and the lifting arm 124 are pressed together in the thickness direction, the end face of the positioning post 127 inserted into the second connecting hole 1230 can be set to be flush with or recessed relative to the surface of the support arm 123 facing away from the lifting arm 124. This allows the screw head to abut against the surface of the support arm 123 facing away from the lifting arm 124, locking the adjacent support arm 123 and lifting arm 124 without causing wobbling, thus ensuring stability when supporting the trash can 200.

[0065] It should be noted that there are no specific restrictions on the distribution positions of the first connecting holes 1240 on the lifting arm 124 and the second connecting holes 1230 on the support arm 123. As long as there are multiple second connecting holes 1230 spaced apart along the length of the support arm 123 and multiple first connecting holes 1240 spaced apart along the length of the lifting arm 124, the length of the entire support arm 120 can be adjusted by connecting the first connecting holes 1240 and the second connecting holes 1230 at different positions with screws.

[0066] For example, in Figures 5 to 7 In the illustrated embodiment, the first connecting holes 1240 are arranged in a rectangular array along the length of the lifting arm 124, and the second connecting holes 1230 are arranged in a rectangular array along the length of the support arm 123; both are arranged in two rows and four columns. The lifting arm 124 has eight first connecting holes 1240, and the support arm 123 has eight second connecting holes 1230. The number of screws and positioning pins 127 can both be four, arranged in two rows and two columns. Simultaneously, along the overall length of the lifting arm 120, there is at least one first connecting hole 1240 and one second connecting hole 1230 between two fasteners 126. That is, along the length of the support arm 123 and the lifting arm 124, there is the same number of first connecting holes 1240 and second connecting holes 1230 between two fasteners 126. This ensures sufficient spacing between the two sets of screws along the length of the lifting arm 120, thereby ensuring that the stress caused by screw tightening between the support arm 123 and the lifting arm 124 is more dispersed. Therefore, the lifting arm 120 in this figure has three lengths to choose from.

[0067] For example, in Figures 5 to 7 In the embodiment shown, positioning pins 127 are installed in the first connecting holes 1240 of the first and third columns from the left on the lifting arm 124, and are respectively inserted into the second connecting holes 1230 of the second and fourth columns from the left on the support arm 123. That is, the positioning pins 127 of the first column from the left are inserted into the second connecting holes 1230 of the second column from the left, and the positioning pins 127 of the third column from the left are inserted into the second connecting holes 1230 of the fourth column from the left. At this time, the support arm 120 is at its maximum length H+L, where L is the center distance between two adjacent first connecting holes 1240 and the center distance between two adjacent second connecting holes 1230 in the length direction of the support arm 120.

[0068] When it is necessary to shorten the length of the support arm 120, the positioning pins 127 of the first and fourth columns from the left on the lifting arm 124 can be inserted into the second connecting holes 1230 of the first and third columns from the left on the support arm 123, that is, the positioning pins 127 of the first column from the left are inserted from the left to shorten the length of the support arm 120.

[0069] Positioning pins 127 are installed in the first connecting holes 1240 of the second and fourth columns from the left on the lifting arm 124, respectively. When the positioning pins 127 of the second column from the left are inserted into the second connecting holes 1230 of the first column from the left on the support arm 123, and the positioning pins 127 of the fourth column from the left are inserted into the second connecting holes 1230 of the third column from the left on the support arm 123, the lifting arm 120 is at its minimum length HL.

[0070] Of course, in one embodiment, the first connecting hole 1240 and / or the second connecting hole 1230 can also be a slotted hole with the same length as the support arm 120. The overall length of the support arm 120 can be adjusted by fasteners 126 passing through different positions along the length of the slotted hole. In another embodiment, the lifting arm 124 can also be slidably connected to the support arm 123 and driven by a linear drive component such as a hydraulic cylinder to extend and retract the lifting arm 124 relative to the support arm 123. The length of the support arm 120 is kept fixed by stopping the linear drive component of the hydraulic cylinder.

[0071] It should also be noted that the support arm 120 must also fulfill the following functions:

[0072] 1. Due to installation space limitations, the support arm 120 involves a stretching process of the spring 140 during opening and closing. The spring 140's torque is not at its maximum during the open and closed states. To increase the clamping force on the support arm 120, the tension of the spring 140 needs to be increased. However, the spring force cannot be increased indefinitely due to structural and space limitations, and increasing it would increase the difficulty of opening and closing the support arm 120. Therefore, the current solution provides a relatively small clamping force of the support arm 120 on the limit block 170. When the support arm 120 is in the open state, during the parking drum tipping and loading operation, the torque of the spring 140 only needs to be sufficient to keep the support arm 120 in the open state; that is, a smaller spring force is sufficient.

[0073] Second, to prevent the support arm 120 from opening unnecessarily while the vehicle is on the road, causing driving safety hazards and noise from colliding with the support arm bracket 110, the left and right support arms 120 need to be locked and limited.

[0074] The limiting methods are basically the same, for example, in Figure 8The arm 120 can be limited to a certain extent by setting a locking mechanism at any one of the locations shown in positions one, two, and three. Specifically, this can be achieved by setting a spring 140 or a locking pin 152 at any position outside the arm 120.

[0075] When it is necessary to open the support arm 120, the locking mechanism must be manually opened before the support arm 120 can be opened. When closing, it can be automatically locked by the wedge guide on the locking pin.

[0076] For example, Figure 9 The diagram shows a prior art method for limiting the movement of the support arm 120 after folding. It primarily employs a locking mechanism to restrict the movement gap between the left and right support arms 120, thus reducing the range of motion. Specifically, a locking mechanism is used to lock the left and right support arms 120. This is manifested in a U-shaped pin seat 150 fixed to the support arm bracket 110, with two pin holes 152 on the pin seat 150. A stop plate 151 is fixed to each of the left and right support arms 120. When limiting the movement of the support arm 120, the stop plate 151 is placed inside the pin seat 150, and the pins 152 are inserted into the two pin holes 152, thus limiting the stop plate 151 between the pins 152 and the pin seat 150.

[0077] However, the aforementioned Figure 8 and Figure 9 The proposed solution has the following problems:

[0078] ① Inconvenient operation. Opening the support arm 120 requires inserting and removing the locking pin, which is too complicated. Especially... Figure 9 The locking mechanism requires the insertion and removal of the pin 152 when opening and closing the support arm 120. The pin 152 is a small part and is easy to lose.

[0079] ② Noise Pollution: Due to manufacturing precision requirements and the need for smooth operation, it is impossible to maintain a tight fit between the pin 152 and the support arm 120. This causes the support arm 120 to move between the limit block 170 and the pin 152, generating noise through collisions. Especially in the pin mechanism, contact between the baffle 151 and the pin 152 is necessary to prevent vibration and displacement of the support arm 120. However, this contact increases the difficulty of inserting and removing the pin 152, placing high demands on the manufacturing precision of the support arm 120 and support arm bracket 110. Therefore, considering all factors, a certain gap must be maintained between the pin 152 and the baffle 151, meaning the noise generated by the support arm 120 cannot be completely eliminated.

[0080] ③ Damage to the anti-rust layer: The prolonged insertion and removal of the pin 152 and the bracket 120 will cause wear on the contact surface, which will damage the anti-rust layer such as paint and also have a certain impact on the appearance.

[0081] To address the aforementioned issues, the inventors, through research, eliminated the locking mechanisms such as the pin 152, pin seat 150, and upper baffle 151 of the support arm 120, and adopted an adsorption method to achieve locking and limiting of the support arm 120 after it is folded.

[0082] Specifically, refer to Figure 10 and Figure 11 This application also discloses a support arm structure, which includes a support arm bracket 110, a lifting arm 180, and a support arm 120. The support arm 120 can be one of the aforementioned components. Figures 5 to 7 The structure of the embodiment shown.

[0083] The support arm bracket 110 is mainly used for hinged connection of the support arm 123 of the support arm 120, so that when it is necessary to hang a bucket, the support arm 120 can rotate outward and unfold to a position where the entire support arm 120 is approximately perpendicular to the support arm bracket 110. After unloading the bucket, the support arm 120 can rotate inward and fold. At the same time, the support arm bracket 110 also serves to lift the support arm 120 by rotating upward with the lifting arm 180.

[0084] The support arm bracket 110 is equipped with an adsorption element 160, which can adsorb the support arm 123 or the lifting arm 124, thereby locking and limiting the support arm 120 when it is not working. To open the support arm 120, simply pull it open; to fold the support arm 120, simply push it to the position where the adsorption force of the adsorption element 160 is applied. The operation is convenient, the locking force is automatically released, and the noise is low.

[0085] Specifically, the adsorption component 160 includes a magnet 161 and an adjustment pad 162. The magnet 161 is mounted on the support arm bracket 110 through the adjustment pad 162. The support arm 120 is locked and limited by magnetic force. No additional accessories are needed to achieve adsorption, which is low cost. Moreover, the magnetic force on the support arm 120 can be changed by adjusting the thickness of the adjustment pad 162.

[0086] The support arm bracket 110 is also provided with a limiting block 170. The thickness of the limiting block 170 is greater than the thickness of the adsorption member 160. The limiting block 170 is used to abut against the support arm 123 or the lifting arm 124. In this way, under the magnetic force of the magnet 161, there is a gap M between the support arm 120 and the magnet 161, which prevents the support arm 120 from contacting the magnet 161 and avoids scratches on the mechanism.

[0087] Of course, in some embodiments, the adsorption element 160 can also be adsorbed and locked by a vacuum suction cup or the like.

[0088] In addition, this application also discloses a garbage truck that includes the support arm structure described in the above embodiments, and therefore also has the corresponding structure and beneficial effects.

[0089] In summary, the embodiments of this application disclose a support arm 120, a support arm structure, and a garbage truck, which have the following advantages:

[0090] 1. The 120-inch support arm is highly adaptable: the working length of the 120-inch support arm is adjustable, making it suitable for several different types of trash cans.

[0091] 2. No pushing or pulling of the bucket, no bucket jamming, and no bucket falling off: The direction of the 120 slot and 121 of the support arm is consistent with the movement trajectory, and the hook arm can smoothly import and export.

[0092] 3. The 120mm support arm increases the loading space, providing more room for error correction during bucket operation and making operation more convenient.

[0093] 4. Easy to lay out: The structure is compact and relatively easy to lay out on the tipping mechanism 100.

[0094] 5. Noise reduction: When the support arm 120 is closed, the force of the magnet 161 is continuously applied to the support arm 120, so that when the vehicle is vibrating or when using other tipping mechanisms 100 to load materials, the support arm 120 and the limit block 170 can always be pressed together, and the noise disappears.

[0095] 6. Avoid interference: Non-contact force is applied to the support arm 120 to avoid scratches on the mechanism.

[0096] 7. Automatic locking and release of locking force: Simple and uncomplicated one-handed operation. The support arm 120 automatically locks when closed. When opening, after overcoming the magnetic force and the force of the spring 140, the magnetic force is released after the support arm 120 opens a certain distance, and the support arm 120 can be easily opened.

[0097] 8. Conforms to operating habits: Meets the requirement that the 120mm support arm requires greater force to close and less force to open.

[0098] 9. The processing and manufacturing difficulty of structural components is reduced, resulting in better performance.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A support arm, characterized in that, It includes a connected support arm (123) and a lifting arm (124), wherein the end of the support arm (123) away from the lifting arm (124) is used to hinge the lifting arm bracket (110), and the end of the lifting arm (124) away from the support arm (123) is provided with a slot (121) for inserting the hanging trunnion (210); The lifting arm (124) is telescopic relative to the support arm (123).

2. The support arm according to claim 1, characterized in that, The lifting arm (124) and the support arm (123) are detachably connected by fasteners (126), and the connection position is adjustable.

3. The support arm according to claim 2, characterized in that, The lifting arm (124) is provided with a plurality of first connecting holes (1240), and the support arm (123) is provided with a plurality of second connecting holes (1230); The fastener (126) may be selectively inserted into one of the first connecting holes (1240) and the second connecting hole (1230).

4. The support arm according to claim 3, characterized in that, The support arm also includes a positioning post (127), which can be selectively installed in one of the first connecting holes (1240); The positioning post (127) is provided with a mating hole (1270). The positioning post (127) can be selectively inserted into a second connecting hole (1230). The fastener (126) extends into the mating hole (1270) and is fixed relative to the mating hole (1270).

5. The support arm according to claim 4, characterized in that, The mating hole (1270) is a threaded hole; The fastener (126) includes a screw that passes through the second connecting hole (1230) from the side of the support arm (123) facing away from the lifting arm (124) and is threaded into the mating hole (1270).

6. The support arm according to claim 4 or 5, characterized in that, The end face of the positioning post (127) inserted into the second connecting hole (1230) is flush with or recessed relative to the surface of the support arm (123) facing away from the lifting arm (124).

7. The support arm according to any one of claims 3-5, characterized in that, Each of the first connecting holes (1240) is arranged in a rectangular array along the length of the lifting arm (124), and each of the second connecting holes (1230) is arranged in a rectangular array along the length of the support arm (123). Along the length of the support arm (123), there is at least one first connecting hole (1240) and a second connecting hole (1230) between the two fasteners (126).

8. A support arm structure, characterized in that, include: Support arm bracket (110); The support arm (120) according to any one of claims 1-7, wherein the support arm (123) is hinged to the support arm bracket (110); The arm support bracket (110) is provided with an adsorption member (160), which can adsorb the support arm (123) or the lifting arm (124).

9. The support arm structure according to claim 8, characterized in that, The adsorption component (160) includes a magnet (161) and an adjustment pad (162), wherein the magnet (161) is mounted on the support arm bracket (110) via the adjustment pad (162); And / or, The support arm bracket (110) is also provided with a limiting block (170), the thickness of which is greater than the thickness of the adsorption member (160), and the limiting block (170) is used to abut against the support arm (123) or the lifting arm (124).

10. A garbage truck, characterized in that, Includes the support arm structure as described in claim 8 or 9.

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