A detachable garbage truck hook arm device

Abstract

This utility model relates to the field of sanitation vehicle technology, and in particular to a detachable garbage truck hook arm device, comprising: a hook arm with a connecting column fixed at its top, the connecting column having a hollow inner cavity, an external thread on its top outer wall, and two symmetrically positioned openings circumferentially on its outer wall; a hook head with a cover fixed at its bottom, the cover having an installation cavity inside, the inner wall of the installation cavity having an internal thread adapted to the external thread of the connecting column; wherein the working swing direction of the hook head is orthogonal to the line connecting the centers of the two positioning openings; a latching mechanism, radially elastically telescopically disposed in the installation cavity of the cover, comprising a latch adapted to the positioning openings; and an unlocking mechanism, slidably sleeved on the outer wall of the connecting column, the sliding path of which covers the positioning openings of the connecting column; the present application aims to provide a garbage truck hook arm device, wherein the hook head can be quickly installed and disassembled, thereby solving the technical problems of difficult, costly, and time-consuming repair and replacement of hook heads after wear in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of sanitation vehicle technology, and in particular to a detachable garbage truck hook arm device. Background Technology

[0002] As a key piece of equipment in the modern urban environmental sanitation and solid waste transfer system, the hook arm of a garbage truck uses a hydraulic system to drive the hook arm to perform a series of operations such as grabbing, lifting, unloading, and placing garbage containers. It is the core component for realizing rapid transfer and turnover of garbage. In the entire operation of the hook arm device, the hook head, as the component that directly connects to the garbage container's hook lugs or hook points, bears all the traction and lifting loads.

[0003] Application number CN202411520368.0 discloses a detachable garbage truck folding hook arm device, including a sub-beam frame, a tipping bracket, a lifting arm, a lifting cylinder, a first folding cylinder, a folding main arm, a second folding cylinder, and a folding right-angle arm arranged sequentially. The tipping bracket is hinged to the sub-beam frame at the first cylinder fulcrum, the tipping bracket is hinged to the lifting arm at the second cylinder fulcrum, the lifting arm is hinged to the front end of the lifting cylinder at the third cylinder fulcrum, the lifting cylinder is hinged to the front end of the sub-beam frame at the fourth cylinder fulcrum, the first folding cylinder is hinged to the lifting arm at the fifth cylinder fulcrum, the first folding cylinder is hinged to the folding main arm at the sixth cylinder fulcrum, the second folding cylinder is hinged to the folding main arm at the seventh cylinder fulcrum, and the second folding cylinder is hinged to the folding right-angle arm at the eighth cylinder fulcrum. This application, through the folding main arm and folding right-angle arm, can adapt to garbage bins of different sizes and shapes, increasing the flexibility of use and expanding the application sites.

[0004] However, existing technologies still have problems: the hook head, as a structure that frequently comes into contact with the hook lugs or attachment points of the garbage container, is subjected to enormous friction, tension, shearing force, and impact during loading and unloading operations. Long-term repeated action makes the hook head highly susceptible to metal fatigue, deformation, wear, and even structural damage such as breakage. Currently, hook arm devices on the market generally adopt an integrated design of the hook head and hook arm body, mostly fixed by welding. This means that when the hook head is damaged, it is impossible to replace the individual component; instead, the entire hook arm body must be cut, welded, and repaired, or the entire expensive hook arm assembly must be replaced. This seriously affects the efficiency of garbage collection and transportation and the utilization rate of vehicles, significantly increasing operating and maintenance costs. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a garbage truck hook arm device, whose hook head can be quickly installed and disassembled, so as to solve the technical problems of difficult maintenance and replacement, high cost and long time consumption after hook head wear in the prior art.

[0006] This utility model adopts the following technical solution: a detachable garbage truck hook arm device, the hook arm device comprising: a hook arm, a connecting column fixedly mounted on its top, the connecting column having a hollow inner cavity, an external thread on its top outer wall, and two symmetrically positioned openings circumferentially arranged on its outer wall; a hook head, a cover fixedly mounted on its bottom, the cover having an installation cavity inside, the inner wall of the installation cavity having an internal thread adapted to the external thread of the connecting column; wherein, the working swing direction of the hook head is orthogonal to the center line connecting the two positioned openings; a latching mechanism, radially elastically telescopically disposed within the installation cavity of the cover, comprising a latch adapted to the positioned openings; and an unlocking mechanism, slidably sleeved on the outer wall of the connecting column, its sliding path covering the positioned openings of the connecting column.

[0007] As a preferred technical solution of this utility model, the buckling mechanism further includes: a first sliding groove, radially opened at the top of the mounting cavity of the cover, with two buckles slidably connected in the first sliding groove and arranged opposite to each other; a fixing post, fixed in the center of the first sliding groove, with the two buckles elastically connected to both sides of the fixing post by springs, so that the two buckles can move closer or further away from each other in the first sliding groove.

[0008] As a preferred technical solution of this utility model, the unlocking mechanism includes: a second sliding groove, which is circumferentially disposed on the bottom outer wall of the connecting column; and an outer sliding ring, which is slidably sleeved on the connecting column through the second sliding groove.

[0009] As a preferred technical solution of this utility model, the unlocking mechanism further includes: an electric push rod, which is fixedly disposed on the side of the hook arm, and its telescopic end is fixedly connected to the outer slip ring through a connecting block.

[0010] As a preferred technical solution of this utility model, a fixed seat is provided on the side of the hook arm corresponding to the electric push rod, and the electric push rod is fixed on the fixed seat.

[0011] As a preferred technical solution of this utility model, the hook arm device further includes a mounting frame, the tail end of the hook arm is hinged to the mounting frame; a guide wheel is provided at the rear end of the mounting frame, and an operating valve is provided at the front end of the mounting frame; hydraulic cylinders are hinged to both sides of the hook arm, and the hydraulic cylinders are hinged to the mounting frame.

[0012] As a preferred technical solution of this utility model, the top of the cover is provided with reinforcing ribs, which are respectively reinforced to the side wall of the hook and the top of the cover.

[0013] Compared with the prior art, the present invention has the following beneficial effects: This application achieves a separable threaded connection between the hook head and hook arm by fixing a connecting post with external threads and a circumferential positioning opening at the top of the hook arm, and a cover with internal threads and an internal snap-fit ​​mechanism at the bottom of the hook head. When the hook head is screwed into place, the snap-fit ​​mechanism automatically engages with the positioning opening under elastic action, achieving locking. This effectively solves the problems of high cost and low efficiency caused by the traditional integrated hook head being easily damaged due to long-term stress and requiring complete replacement after damage. It allows for quick individual replacement of the hook head, greatly reducing maintenance costs, shortening repair time, and improving vehicle utilization. In addition, the working swing direction of the hook head is orthogonal to the center line connecting the two positioning openings, ensuring that the hook head can automatically be in a precise working posture perpendicular to the ground after locking. This avoids the repeated adjustments and alignment difficulties caused by inaccurate hook head positioning in traditional operations, improving work efficiency and safety. Combined with the electric push rod driven unlocking mechanism, a simple operation can drive the outer slip ring to press the snap-fit ​​away from the positioning opening, achieving quick and convenient unlocking and disassembly of the hook head.

[0014] The specific technical solution and beneficial effects of this utility model will be described in detail below with reference to the accompanying drawings. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a side view of a partial structure of this application; Figure 3 This is a schematic diagram of a partial structure of this application; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the hook and cover structure of this application. Figure 1 ; Figure 6 This is a schematic diagram of the hook and cover structure of this application. Figure 2 ; In the diagram: 1. Hook arm; 2. Connecting column; 3. Positioning opening; 4. Hook head; 5. Cover; 6. Buckle; 7. First slide groove; 8. Fixing column; 9. Spring; 10. Second slide groove; 11. Outer slip ring; 12. Electric actuator; 13. Fixing base; 14. Mounting bracket; 15. Guide wheel; 16. Operating valve; 17. Hydraulic cylinder; 18. Reinforcing rib. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0018] This utility model relates to a detachable garbage truck hook arm device. Please refer to [link / reference]. Figures 1 to 6 As shown, the hook arm device of this application includes a hook arm 1, a hook head 4, a buckling mechanism and an unlocking mechanism. Specifically, a cylindrical connecting post 2 is fixedly welded to the top of the hook arm 1. The inner cavity of the connecting post 2 is hollow, and an external thread is provided on the outer wall of the top of the connecting post 2 for screwing and connecting with the hook head 4. Two positioning openings 3 are symmetrically provided on the outer wall of the connecting post 2 in the circumferential direction. The positioning openings 3 are rectangular through slots.

[0019] The hook 4, as a working component that directly interacts with the garbage container, has a cover 5 integrally fixed to its bottom. The cover 5 forms an installation cavity, and the inner wall of the installation cavity has an internal thread that matches the external thread of the connecting post 2. Furthermore, the working swing direction of the hook 4 is orthogonal to the center line connecting the two positioning openings 3, ensuring accurate positioning of the hook 4 in the locked state to align with and hook the garbage container's hanging ears. The latching mechanism is radially elastically telescopically disposed inside the installation cavity of the cover 5. The shape and size of its latch 6 match the positioning opening 3 on the connecting post 2, thereby achieving engagement. The unlocking mechanism is slidably sleeved on the outer wall of the connecting post 2, and its sliding stroke can completely cover or expose the positioning opening 3 on the connecting post 2.

[0020] During initial installation or replacement of hook head 4, the operator first aligns hook head 4 with connecting post 2, ensuring the internal thread of its cover 5 aligns with the external thread of connecting post 2 and begins to screw it in. As hook head 4 tightens downwards along the thread of connecting post 2, when hook head 4 approaches its final locked position, the latch 6 in the latching mechanism extends radially outwards under its own elastic force and accurately engages with the positioning opening 3 on connecting post 2. Simultaneously, because the working swing direction of hook head 4 is orthogonal to the center line of positioning opening 3, hook head 4 will automatically be in a vertical working posture after locking, avoiding additional alignment adjustments and significantly improving work efficiency. To remove hook head 4, activate the unlocking mechanism, allowing it to slide upwards along connecting post 2. The outer slip ring 11 will compress the latch 6 inwards, disengaging it from positioning opening 3. At this point, hook head 4 can rotate freely and unscrew from connecting post 2, achieving quick and convenient disassembly.

[0021] Furthermore, the latching mechanism includes a first groove 7 radially opened at the top of the mounting cavity of the cover 5. Two latches 6 are slidably connected within the first groove 7 and are arranged opposite to each other. A fixing post 8 is fixed at the center of the first groove 7. The inner ends of the two latches 6 are elastically connected to the two sides of the fixing post 8 by springs 9, so that the two latches 6 can move radially closer or further apart within the first groove 7. Based on the preload of the spring 9, the latching mechanism applies a radial outward pushing force to the two latches 6 when there is no external interference, causing the latches 6 to tend to extend outward. When the hook head 4 is screwed onto the connecting post 2, and the positioning opening 3 on the connecting post 2 is aligned with the position of the latch 6 in the latching mechanism inside the cover 5, the preload of the spring 9 pushes the latch 6 to extend radially and engage in the positioning opening 3, thereby locking the hook head 4.

[0022] Furthermore, the unlocking mechanism includes: a second sliding groove 10 circumferentially opened on the bottom outer wall of the connecting post 2, providing guidance for the sliding of the outer sliding ring 11; the annular outer sliding ring 11 is slidably sleeved on the connecting post 2 through the second sliding groove 10. Specifically, the working principle of the unlocking mechanism is based on the axial sliding of the outer sliding ring 11. When the outer sliding ring 11 moves axially along the connecting post 2 under the constraint of the second sliding groove 10, its inner edge wedge surface slides to abut against the latching mechanism. The wedge surface gradually presses the latch 6 in the latching mechanism to retract radially inward. When the outer sliding ring 11 continues to slide until it completely covers the positioning opening 3, the latch 6 will be completely pressed back into the cover 5, disengaging from the positioning opening 3, thereby releasing the lock on the hook head 4. At the same time, the outer sliding ring 11 is slidable on the connecting post 2 by an electric push rod 12.

[0023] Furthermore, the hook arm device also includes a mounting frame 14 for overall support movement. The tail end of the hook arm 1 is hinged to the mounting frame 14, allowing the hook arm 1 to perform a certain angle of pitching movement. To facilitate on-site movement and deployment of the device, the rear end of the mounting frame 14 is equipped with guide wheels 15, which are typically wear-resistant solid or pneumatic tires for rolling on the ground. At the front end of the mounting frame 14, an operating valve 16 is provided for manual or remote control of the hydraulic circuit's on / off state and direction. To realize the lifting and tilting functions of the hook arm 1, hydraulic cylinders 17 are symmetrically hinged to both sides of the hook arm 1, and the other ends of these hydraulic cylinders 17 are also hinged to the mounting frame 14.

[0024] Furthermore, a reinforcing rib 18 is specially provided on the top of the cover shell 5. The reinforcing rib 18 is connected to the cover shell 5 by welding, and is reinforced to the side wall of the hook head 4 and the top of the cover shell 5 to form a triangular support structure.

[0025] The working principle of this application is as follows: First, the hook head 4 to be installed is aligned with the connecting post 2 at the top of the hook arm 1. By rotating, the internal thread inside the cover 5 engages with the external thread of the connecting post 2. As the tightening process proceeds, the hook head 4 gradually moves downward. When the hook head 4 is engaged to the predetermined depth and angle, the two latches 6 in the latching mechanism inside the cover 5 extend radially outward elastically under the preload of the spring 9 and engage with the two circumferentially symmetrical positioning openings 3 on the outer wall of the connecting post 2, completing the self-positioning and reliable locking of the hook head 4. At this time, the working swing direction of the hook head 4 is orthogonal to the center line of the positioning openings 3, ensuring that the hook head 4 is in the working posture. When it is necessary to perform garbage container grabbing, lifting, or dumping operations, the hydraulic oil is controlled to flow into the hydraulic cylinders 17 on both sides of the hook arm 1 by operating the operating valve 16 at the front end of the mounting frame 14, driving the hook arm 1 to move up, down, and dump around its hinge point with the mounting frame 14. The guide wheel 15 at the rear end of the mounting frame 14 facilitates the movement of the device. If the hook head 4 needs repair or replacement of a different type, activate the electric push rod 12 installed on the side of the hook arm 1. The telescopic end of the electric push rod 12 drives the outer slip ring 11 to slide upward along the axial direction of the connecting column 2 via the connecting block. During the sliding process of the outer slip ring 11 under the guidance of the second sliding groove 10, its inner edge will press the buckle 6 in the buckling mechanism to retract inward, causing it to disengage from the positioning opening 3 on the connecting column 2. Once the buckle 6 is completely disengaged, the hook head 4 is no longer circumferentially locked. At this time, it can be rotated in the opposite direction to unscrew it from the connecting column 2, realizing quick and convenient replacement or disassembly of the hook head 4. The whole process realizes the quick connection, accurate alignment and automatic unlocking of the hook head 4, which significantly improves the efficiency, safety and flexibility of garbage transfer operations, and effectively solves the problems of cumbersome loading and unloading and inaccurate positioning of the hook head 4 in the existing technology.

[0026] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0027] Although the present invention 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 of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A detachable garbage truck hook arm device, characterized in that, The hook arm device includes: The hook arm (1) has a connecting column (2) fixedly installed at its top. The connecting column (2) has a hollow inner cavity, an external thread on its top outer wall, and two positioning openings (3) symmetrically arranged on its outer wall. The hook (4) has a cover (5) fixed at its bottom. The cover (5) has an installation cavity inside. The inner wall of the installation cavity is provided with an internal thread that matches the external thread of the connecting column (2). The working swing direction of the hook (4) is orthogonal to the center line connecting the two positioning openings (3). The buckle mechanism is radially elastically telescopically disposed in the mounting cavity of the cover (5), and includes a buckle (6) that is adapted to the positioning opening (3); The unlocking mechanism is slidably sleeved on the outer wall of the connecting post (2), and its sliding path covers the positioning opening (3) of the connecting post (2).

2. The detachable garbage truck hook arm device according to claim 1, characterized in that, The latching mechanism further includes: The first groove (7) is radially opened at the top of the mounting cavity of the cover (5), and the two buckles (6) are respectively slidably connected in the first groove (7) and arranged opposite to each other; A fixed post (8) is fixed in the center of the first slide groove (7). The two buckles (6) are elastically connected to the two sides of the fixed post (8) by springs (9), so that the two buckles (6) can move closer or further away from each other in the first slide groove (7).

3. The detachable garbage truck hook arm device according to claim 1, characterized in that, The unlocking mechanism includes: The second chute (10) is circumferentially located on the bottom outer wall of the connecting column (2); The outer slip ring (11) is slidably sleeved on the connecting column (2) through the second slip groove (10).

4. A detachable garbage truck hook arm device according to claim 3, characterized in that, The unlocking mechanism also includes: An electric actuator (12) is fixed to the side of the hook arm (1), and its telescopic end is fixed to the outer slip ring (11) through a connecting block.

5. A detachable garbage truck hook arm device according to claim 4, characterized in that, On the side of the hook arm (1), a fixed seat (13) is provided corresponding to the electric push rod (12), and the electric push rod (12) is fixed on the fixed seat (13).

6. A detachable garbage truck hook arm device according to claim 1, characterized in that, The hook arm device also includes a mounting frame (14), and the tail end of the hook arm (1) is hinged to the mounting frame (14).

7. A detachable garbage truck hook arm device according to claim 6, characterized in that, A guide wheel (15) is provided at the rear end of the mounting bracket (14), and an operating valve (16) is provided at the front end of the mounting bracket (14).

8. A detachable garbage truck hook arm device according to claim 7, characterized in that, Hydraulic cylinders (17) are hinged to both sides of the hook arm (1), and the hydraulic cylinders (17) are hinged to the mounting frame (14).

9. A detachable garbage truck hook arm device according to claim 1, characterized in that, The top of the cover (5) is provided with reinforcing ribs (18), which are respectively reinforced to the side wall of the hook (4) and the top of the cover (5).

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