Garbage truck upper loading arm assembly

Abstract

The utility model discloses a garbage truck upper dress arm assembly, including chassis, be equipped with lifting oil cylinder and hook arm on the chassis, and hook arm includes pull arm and is used to hang the pull hook of carriage, and lifting oil cylinder drives pull hook through lifting pull arm, and be equipped with the reinforcing bush and the reinforcing block that are used to maintain structural strength on pull arm, and be equipped with the stopper that is used to prevent unhooking on pull hook. The utility model discloses set up reinforcing block between the included angle of the cross arm and vertical arm of hook arm, utilize its resistance bending and torsional stress when hook arm lifting, and its recessed surface inclined plane can guarantee the smooth transition between cross arm and vertical arm, to optimize stress flow, prevent stress concentration, can guarantee hook arm strength therefore, in addition, under the condition that the corner of hook arm is reinforced by reinforcing block, and the tail end of hook arm is reinforced by reinforcing plate, reinforcing bush can also reinforce cross arm, can further maintain hook arm strength, and cooperate stopper for the anti -unhooking effect of pull hook, can make the use of hook arm garbage truck more safe.

Description

Technical Field

[0001] This utility model relates to the field of hook-lift garbage truck technology, and in particular to the hook-lift assembly for garbage trucks. Background Technology

[0002] A hooklift garbage truck, also known as a detachable garbage truck, is a specialized transport vehicle equipped with a hooklift tilting mechanism. It consists of a truck chassis, a hydraulic control system, and a detachable garbage container. The hooklift assembly on the garbage truck refers to the hooklift assembly installed on the garbage truck chassis, used for hooking, lifting, and tilting the garbage container (cargo compartment).

[0003] The strength of the hook arm of a hooklift garbage truck, especially its fatigue strength, is one of the factors that directly determines the service life of the vehicle. A hook arm with sufficient strength can withstand the high-intensity operations of repeated lifting, pulling, and lowering day after day. This means a lower failure rate, allowing the vehicle to work continuously and reliably complete its collection tasks. In addition, the lifting process of the hook arm is a process in which the vehicle's center of gravity is constantly changing. A sturdy hook arm can ensure that the lifting process is stable and controllable. If the hook arm is excessively bent and deformed due to insufficient strength or rigidity, it will change the force transmission path, which may cause the entire vehicle to lose balance and cause safety accidents such as side rollover or rear rollover.

[0004] A search revealed that Chinese utility model patent CN207810383U discloses an electric hook-lift garbage truck, comprising a vehicle chassis, a subframe, a boom mechanism, and a garbage container. The vehicle chassis has a cab at the front, the subframe is fixedly mounted at the rear, and the boom mechanism is mounted on the subframe. The garbage container is movably mounted on the vehicle chassis, with the front end of the boom mechanism connected to the front end of the garbage container. The L-shaped hook arm of this application experiences significant bending and torsional stresses at its corners during lifting. Without reinforcement at these points, maintaining the strength of the hook wall would be difficult, posing a safety hazard to the use of the hook-lift garbage truck. Utility Model Content

[0005] In view of the above-mentioned prior art, the present invention provides a hook arm assembly for a garbage truck, and the main technical problem to be solved is how to maintain the hook wall strength of the hook arm garbage truck.

[0006] To achieve the above objectives, the technical solution of this utility model embodiment is implemented as follows:

[0007] The garbage truck is equipped with a lifting arm assembly, which includes a lifting cylinder and a hook arm mounted on the chassis. The hook arm includes a pull arm and a hook for attaching the truck body. The lifting cylinder drives the hook arm by lifting the pull arm. The pull arm is equipped with a reinforcing block and a reinforcing sleeve to maintain structural strength. The hook arm is equipped with a stop to prevent disengagement.

[0008] Furthermore, the stop block is rotatably connected to the opening of the hook, and a torsion spring is fixedly connected between the stop block and the hook.

[0009] Furthermore, the pull arm is L-shaped, and includes a vertical arm and a horizontal arm, with a hook fixedly connected to the top of the vertical arm.

[0010] Furthermore, the reinforcing block is fixedly connected at the angle between the vertical arm and the horizontal arm of the pull arm, and the reinforcing sleeve is fitted onto the outside of the horizontal arm of the pull arm.

[0011] Furthermore, the reinforcing block is in the shape of a right-angled triangular prism, and the inclined surface of the reinforcing block is a concave arc surface.

[0012] Furthermore, a cylinder seat is fixedly connected to the side wall of the boom, and the output shaft of the lifting cylinder is rotatably connected to the cylinder seat.

[0013] Furthermore, it also includes a reinforcing plate mounted on the chassis, which is used to reinforce the end of the crossarm when the arm is tilted.

[0014] Furthermore, it also includes supports for the carriages, locking hooks for locking the carriages, and tilting frames for supporting the tilting of the carriages.

[0015] Furthermore, the support is equipped with a pad to protect the carriage.

[0016] The beneficial effects of this utility model are as follows:

[0017] This application incorporates a reinforcing block at the angle between the horizontal and vertical arms of the hook arm. This block resists bending and torsional stresses during hook arm lifting, and its concave curved surface ensures a smooth transition between the horizontal and vertical arms, optimizing stress flow and preventing stress concentration, thus guaranteeing hook arm strength. Furthermore, with the reinforcing block reinforcing the corners of the hook arm and the reinforcing plate reinforcing the tail end, the reinforcing sleeve also reinforces the horizontal arm to prevent stress concentration on the horizontal arm, which could lead to bending or breakage, thus further maintaining hook arm strength. Combined with the anti-disengagement function of the stop block for the hook, this makes the use of the hook-lift garbage truck safer. Attached Figure Description

[0018] Figure 1 This is a perspective view of the overhead boom assembly on the garbage truck in Embodiment 1 of this application;

[0019] Figure 2 This is a perspective view of the reinforcing block of the garbage truck upper arm assembly in Embodiment 2 of this application.

[0020] Explanation of icon numbers:

[0021] 1. Chassis, 101. Lifting cylinder, 2. Hook arm, 201. Pull arm, 201. Reinforcing block, 2011. Reinforcing sleeve, 2012. Pull hook, 202. Stop block, 2021. Support, 3. Cylinder seat, 4. Reinforcing plate, 5. Locking hook, 6. Tilting frame, 7. Detailed Implementation

[0022] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the utility model.

[0023] Example

[0024] See attached document Figure 1-2 This application provides a garbage truck upper arm assembly, including a lifting cylinder 101 and a hook arm 2 mounted on a chassis 1. The hook arm 2 includes a pull arm 201 and a hook 202 for mounting a truck body. The lifting cylinder 101 drives the hook 202 by lifting the pull arm 201. The pull arm 201 is provided with a reinforcing block 2011 and a reinforcing sleeve 2012 for maintaining structural strength. The hook 202 is provided with a stop block 2021 for preventing disengagement.

[0025] Preferably, the stop block 2021 is rotatably connected to the opening of the hook 202, and a torsion spring is fixedly connected between the stop block 2021 and the hook 202. The elastic force of the torsion spring can keep the stop block 2021 in the state of blocking the hook 202, thus preventing the car body from falling off the hook 202. When attaching the car body, it is only necessary to overcome the elastic force of the torsion spring to make the stop block 2021 deflect, and the attachment can be successfully achieved.

[0026] Preferably, the pull arm 201 is L-shaped and includes a vertical arm and a horizontal arm. The hook 202 is fixedly connected to the top of the vertical arm of the pull arm 201. The length of the vertical arm is less than the length of the horizontal arm. The corner where the vertical arm and the horizontal arm intersect is thickened to resist the combined stress when the hook arm 2 is lifted and to ensure its strength.

[0027] Preferably, the reinforcing block 2011 is fixedly connected at the angle between the vertical arm and the horizontal arm of the pull arm 201, and the reinforcing sleeve 2012 is fitted onto the outside of the horizontal arm of the pull arm 201. The reinforcing block 2011 is a right-angled triangular prism, and the inclined surface of the reinforcing block 2011 is a concave arc surface. The reinforcing block 2011 is a triangular prism with isosceles right-angled triangles on the sides. The arc surface of the reinforcing block 2011 can not only ensure a smooth transition to optimize stress distribution, but also provide prestress to the vertical arm and the horizontal arm to resist the bending stress between them to a greater extent.

[0028] Preferably, a cylinder seat 4 is fixedly connected to the side wall of the pull arm 201. The output shaft of the lifting cylinder 101 is rotatably connected to the cylinder seat 4. The cylinder seat 4 can increase the contact area between the output shaft of the lifting cylinder 101 and the pull arm 201, thus dispersing the huge thrust generated by the lifting cylinder 101 to avoid the thrust causing deformation of the pull arm 201 itself.

[0029] Preferably, it also includes a reinforcing plate 5 disposed on the chassis 1. The reinforcing plate 5 is used to reinforce the tail end of the cross arm when the pull arm 201 is flipped. The pull arm 201 is rotatably connected to the chassis 1 through a pin. Therefore, the lifting cylinder 101 can push the hook arm 2 to lift. The reinforcing plate 5 is sleeved on the outside of the aforementioned pin to distribute the thrust from the lifting cylinder 101 borne by the pin, so as to reinforce the pin and ensure its strength.

[0030] Preferably, the device also includes a support 3 for supporting the carriage, a locking hook 6 for locking the carriage, and a tilting frame 7 for supporting the tilting of the carriage. Since the chassis 1 can not only support the carriage through the support 3 and lock the carriage through the locking hook 6, but also tilt the carriage through the tilting frame 7 to dump garbage, the device can ensure its garbage processing capacity.

[0031] Preferably, the support 3 is provided with a pad for protecting the car body. The pad can protect the car body when it falls onto the support 3, preventing the car body containing garbage from having too much impact on the support 3 due to its own weight, which would cause the car body to become unstable.

[0032] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model shall be determined by the protection scope of the claims.

Claims

1. A garbage truck equipped with a boom assembly, characterized in that, It includes a lifting cylinder (101) and a hook arm (2) mounted on a chassis (1). The hook arm (2) includes a pull arm (201) and a hook (202) for mounting a car body. The lifting cylinder (101) drives the hook (202) by lifting the pull arm (201). The pull arm (201) is provided with a reinforcing block (2011) and a reinforcing sleeve (2012) for maintaining structural strength. The hook (202) is provided with a stop block (2021) for preventing disengagement.

2. The garbage truck upper-mounted boom assembly according to claim 1, characterized in that, The stop block (2021) is rotatably connected to the opening of the hook (202), and a torsion spring is fixedly connected between the stop block (2021) and the hook (202).

3. The garbage truck upper-mounted boom assembly according to claim 1, characterized in that, The pull arm (201) is L-shaped and includes a vertical arm and a horizontal arm. The hook (202) is fixedly connected to the top of the vertical arm of the pull arm (201).

4. The garbage truck upper-mounted boom assembly according to claim 3, characterized in that, The reinforcing block (2011) is fixedly connected at the angle between the vertical arm and the horizontal arm of the pull arm (201), and the reinforcing sleeve (2012) is sleeved on the outside of the horizontal arm of the pull arm (201).

5. The garbage truck upper-mounted boom assembly according to claim 4, characterized in that, The reinforcing block (2011) is a right-angled triangular prism, and the inclined surface of the reinforcing block (2011) is a concave arc surface.

6. The garbage truck upper-mounted boom assembly according to claim 3, characterized in that, A cylinder seat (4) is fixedly connected to the side wall of the horizontal arm of the pull arm (201), and the output shaft of the lifting cylinder (101) is rotatably connected to the cylinder seat (4).

7. The garbage truck upper-mounted boom assembly according to claim 3, characterized in that, It also includes a reinforcing plate (5) disposed on the chassis (1), the reinforcing plate (5) being used to reinforce the tail end of the cross arm when the pull arm (201) is flipped.

8. The garbage truck upper-mounted boom assembly according to claim 1, characterized in that, It also includes supports (3) for supporting the carriage, locking hooks (6) for locking the carriage, and a tilting frame (7) for supporting the tilting of the carriage.

9. The garbage truck upper-mounted boom assembly according to claim 8, characterized in that, The support (3) is provided with a protective pad for the carriage.

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