A trash can pulling mechanism
The combination of guide frame and guide wheel solves the problem of collision between the pull hook and the garbage bin, and achieves smooth cooperation between the pull hook and the garbage bin and protection of the hydraulic cylinder.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG HENGYANG HEAVY IND TECH CO LTD
- Filing Date
- 2025-07-07
- Publication Date
- 2026-07-21
AI Technical Summary
In existing garbage bin pulling mechanisms, the pulling hook is prone to colliding with the garbage bin when it extends, which can cause excessive stress on the pulling hook and hydraulic cylinder, posing a risk of damage.
A garbage bin pulling mechanism was designed. Through the combination of guide frame and guide wheel, the pulling hook moves along a specific track during the extension and retraction process, avoiding direct collision and ensuring smooth cooperation between the hydraulic cylinder and the garbage bin pulling structure.
It effectively protects the towing hook and hydraulic cylinder, preventing direct collision damage, while ensuring smooth cooperation and movement between the towing hook and the garbage bin.
Smart Images
Figure CN224529613U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of garbage bin transportation, specifically to a garbage bin pulling mechanism. Background Technology
[0002] Currently, in order to achieve automatic coordination between the traction structure on the garbage bin body and the pull hook at the rear of the vehicle body, the pull hook uses a specific arc-shaped track to move its end to the bottom of the garbage bin body's traction structure. Then, with the help of the arc-shaped track, the pull hook is hooked onto the garbage bin body's traction structure without disengaging from it, thus achieving automatic coordination between the two.
[0003] However, in the current design, the tow hook extends at an angle, which can easily cause the end of the tow hook to collide with the garbage bin when the driver is reversing, resulting in excessive stress on the hydraulic cylinder connected to the tow hook and causing damage.
[0004] In view of the problems existing in the prior art, this utility model designs and manufactures a garbage bin pulling mechanism to overcome the above defects. Summary of the Invention
[0005] To address the problems existing in the prior art, this utility model provides a garbage bin pulling mechanism that can prevent collisions between the pulling hook and the garbage bin, and the drive cylinder can still ensure cooperation with the garbage bin body pulling structure when returning to its original position.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a garbage bin pulling mechanism, including a fixing frame connected to the bottom of the rear of the vehicle body;
[0007] The fixing frame includes two vertical plates with a distance between them, and a movable guide frame is provided between the two vertical plates. The guide frame can move along the length of the vertical plates. A pull hook is fixed at one end of the guide frame, and the other end of the guide frame is hinged to the end of the cylinder rod of the hydraulic cylinder.
[0008] The guide frame is symmetrically provided with first guide wheels on both sides, and the two upright plates are provided with symmetrical first guide grooves. The first guide groove includes a first horizontal straight groove and a downward first arc groove connected to the first horizontal straight groove. The first guide wheel can cooperate with the first guide groove.
[0009] Two connecting plates are fixedly connected to the outer sides of the two upright plates respectively. The two connecting plates are provided with symmetrical second guide grooves. The second guide groove includes a second horizontal straight groove and an upward second arc groove connected to the second horizontal straight groove. The guide frame and the cylinder rod are hinged through a hinge shaft. The two ends of the hinge shaft are symmetrically provided with second guide wheels. The second guide wheels can cooperate with the second guide groove.
[0010] Preferably, the distance between the second guide wheel and the oil cylinder is less than the distance between the first guide wheel and the oil cylinder.
[0011] Preferably, the rear end of the cylinder barrel of the hydraulic cylinder is hinged to the cylinder seat, and the cylinder seat is fixed to the vehicle body.
[0012] Preferably, when the hydraulic cylinder is not extended, the end of the pulling hook extends out of the guide frame.
[0013] Preferably, the first horizontal straight groove and the second horizontal straight groove coincide, and the end of the first arc-shaped groove is located directly below the end of the second arc-shaped groove.
[0014] Preferably, sensor mounting brackets are provided at both ends of the second guide groove. The sensor mounting brackets are connected to the connecting plate, and sensors are provided on the sensor mounting brackets. The sensors are capable of sensing the second guide wheel.
[0015] Preferably, the width of the first arc-shaped groove is greater than the width of the second arc-shaped groove.
[0016] Preferably, the width between the two uprights is slightly greater than the width of the pull hook and the guide frame.
[0017] Preferably, the fixing frame is provided with protective plates at both the upper and lower ends.
[0018] Preferably, the protective plate at the lower end of the guide frame corresponding to the first arc-shaped groove is provided with an anti-interference groove.
[0019] The advantages of this utility model are:
[0020] 1. When the pull hook of this utility model is used in conjunction with the garbage bin traction structure, the hydraulic cylinder drives the guide frame to move. At this time, the pull hook will also move with the guide frame. As the first guide wheels on both sides of the guide frame and the second guide wheel on the outer side of the connecting plate move along the first horizontal straight groove and the second horizontal straight groove respectively, the pull hook extends horizontally out of the fixed frame. As the hydraulic cylinder extends further, the first guide wheel engages with the first arc groove, causing the pull hook to swing obliquely downward. As the hydraulic cylinder extends further, the second guide wheel engages with the second arc groove, causing the fixed frame to swing further around the hinge axis, thereby causing the pull hook to swing further downward, thus converting the pull hook into a vertical state, which is equivalent to the end of the pull hook extending downward. When it collides with the garbage bin, it will only collide with the fixed frame, thus protecting the pull hook and the hydraulic cylinder.
[0021] 2. This utility model utilizes the fact that when the hydraulic cylinder retracts, as the second guide wheel engages with the second arc-shaped groove, the end of the traction hook swings outward, gradually approaching the garbage bin traction structure from bottom to top. When the second guide wheel engages with the second horizontal straight groove and the first guide wheel engages with the first arc-shaped groove, the fixing frame will further swing around the hinge axis, causing the traction hook to swing further upward, thus enabling the end of the traction hook to engage with the garbage bin traction structure. The continued retraction of the hydraulic cylinder and the movement of the vehicle body will drive the garbage bin to move through the traction hook. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of a trash can pulling mechanism;
[0023] Figure 2 A front view of a trash can pulling mechanism;
[0024] Figure 3 A front view of a trash can pulling mechanism without the connecting plate.
[0025] In the diagram: 1. Vertical plate; 2. Pull hook; 3. Guide frame; 4. First guide wheel; 5. First guide groove; 6. Hydraulic cylinder; 7. Hydraulic cylinder seat; 8. Second guide wheel; 9. Sensor mounting bracket; 10. Protective plate; 11. Connecting plate; 12. Second guide groove. Detailed Implementation
[0026] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.
[0027] like Figures 1 to 3 As shown, a garbage bin pulling mechanism includes a fixed frame connected to the rear bottom of the vehicle body. The fixed frame specifically includes two vertical plates 1 with a distance between them. A movable guide frame 3 is provided between the two vertical plates 1. The guide frame 3 can move along the length direction of the vertical plates 1. A pulling hook 2 is fixed to one end of the guide frame 3, and the other end of the guide frame 3 is hinged to the end of the cylinder rod of the hydraulic cylinder 6. The width between the two vertical plates 1 is slightly larger than the width of the pulling hook 2 and the guide frame 3. The extension and retraction of the hydraulic cylinder 6 can drive the guide frame 3 to move.
[0028] Specifically, the rear end of the cylinder barrel of cylinder 6 is hinged to cylinder seat 7, and cylinder seat 7 is fixed to the vehicle body.
[0029] The guide frame 3 is symmetrically provided with first guide wheels 4 on both sides. The two first guide wheels 4 are rotatably connected to the guide frame 3 through a rotating shaft. The two upright plates 1 are provided with symmetrical first guide grooves 5. The first guide wheel 4 on each side can cooperate with the first guide groove 5 on the corresponding side. The first guide groove 5 specifically includes a first horizontal straight groove and a downward first arc groove connected to the first horizontal straight groove.
[0030] The two upright plates 1 of this utility model are respectively fixed to the outer sides of the connecting plates 1. The two connecting plates 11 are provided with symmetrical second guide grooves 12. The second guide groove 12 specifically includes a second horizontal straight groove and an upward second arc groove connected to the second horizontal straight groove. The first horizontal straight groove and the second horizontal straight groove overlap, and the end of the first arc groove is located directly below the end of the second arc groove.
[0031] The guide frame 3 is hinged to the cylinder rod via a hinge shaft. Second guide wheels 8 are symmetrically arranged at both ends of the hinge shaft. The distance between the second guide wheel 8 and the cylinder 6 is less than the distance between the first guide wheel 4 and the cylinder 6. The second guide wheel 8 can cooperate with the second guide groove 12.
[0032] When the pull hook 2 is engaged with the garbage bin traction structure, the hydraulic cylinder 6 drives the guide frame 3 to move. At this time, the pull hook 2 also moves with the guide frame 3. As the first guide wheel 4 on both sides of the guide frame 3 and the second guide wheel 8 on the outer side of the connecting plate 11 move along the first horizontal straight groove and the second horizontal straight groove respectively, the pull hook 2 extends horizontally out of the fixed frame. As the hydraulic cylinder 6 extends further, the first guide wheel 4 engages with the first arc groove, causing the pull hook 2 to swing diagonally downward. As the hydraulic cylinder 6 extends further, the second guide wheel 8 engages with the second arc groove, causing the fixed frame to swing further around the hinge axis, which in turn causes the pull hook 2 to swing further downward, thus converting the pull hook 2 into a vertical state. This is equivalent to the end of the pull hook 2 extending downward. If it accidentally collides with the garbage bin, it will only collide with the fixed frame, thus protecting the pull hook 2 and the hydraulic cylinder 6.
[0033] When the hydraulic cylinder 6 retracts, as the second guide wheel 8 engages with the second arc-shaped groove, the end of the traction hook swings outward, gradually approaching the garbage bin traction structure from bottom to top. When the second guide wheel 8 engages with the second horizontal straight groove and the first guide wheel 4 engages with the first arc-shaped groove, the fixing frame will swing further around the hinge axis, causing the traction hook 2 to swing further upward, thus enabling the end of the traction hook 2 to engage with the garbage bin traction structure. The continued retraction of the hydraulic cylinder 6 and the movement of the vehicle body will drive the garbage bin to move through the traction hook 2.
[0034] When the hydraulic cylinder 6 is not extended, the end of the pull hook 2 extends out of the guide frame 3, so that when the pull hook 2 pulls the garbage bin, the hydraulic cylinder 6 can be directly retracted to the initial position.
[0035] To further determine the two extreme positions of the pull hook 2, sensor mounting brackets 9 are preferably provided at both ends of the second guide groove 12. The sensor mounting brackets 9 are connected to the connecting plate 11 and are equipped with sensors. The sensors can sense the second guide wheel 8 to determine the position of the pull hook 2.
[0036] The width of the first arc groove of this utility model is greater than the width of the second arc groove. This allows the second arc groove to limit the two first guide wheels 4, preventing the axial movement of the first guide wheels 4 from causing the guide frame 3 and the traction hook to move laterally.
[0037] To prevent garbage from contaminating the traction hook and the corresponding rotating connection structure, protective plates 10 are preferably provided at both the upper and lower ends of the fixed frame. However, since the traction hook needs to swing downwards, an anti-interference groove is provided on the protective plate 10 at the lower end of the guide frame 3 corresponding to the first arc groove to ensure that the traction hook can swing to the bottom of the fixed frame.
[0038] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.
Claims
1. A trash can pulling mechanism, characterized in that, Including a mounting bracket that connects to the rear bottom of the vehicle body; The fixed frame includes two vertical plates (1) with a gap, and a movable guide frame (3) is provided between the two vertical plates (1). The guide frame (3) can move along the length direction of the vertical plates (1). One end of the guide frame (3) is fixed with a pull hook (2), and the other end of the guide frame (3) is hinged to the end of the cylinder rod of the oil cylinder (6). The guide frame (3) is symmetrically provided with first guide wheels (4) on both sides, and the two upright plates (1) are provided with symmetrical first guide grooves (5). The first guide groove (5) includes a first horizontal straight groove and a downward first arc groove connected to the first horizontal straight groove. The first guide wheel (4) can cooperate with the first guide groove (5). Two upright plates (1) are respectively fixed to the outer side of the two upright plates (1). The two connecting plates (11) are provided with symmetrical second guide grooves (12). The second guide groove (12) includes a second horizontal straight groove and an upward second arc groove connected to the second horizontal straight groove. The guide frame (3) is hinged to the cylinder rod through a hinge shaft. The two ends of the hinge shaft are symmetrically provided with second guide wheels (8). The second guide wheels (8) can cooperate with the second guide groove (12).
2. The garbage bin pulling mechanism according to claim 1, characterized in that, The distance between the second guide wheel (8) and the oil cylinder (6) is less than the distance between the first guide wheel (4) and the oil cylinder (6).
3. The garbage bin pulling mechanism according to claim 1, characterized in that, The rear end of the cylinder barrel of the hydraulic cylinder (6) is hinged to the cylinder seat (7), and the cylinder seat (7) is fixed to the vehicle body.
4. A garbage bin pulling mechanism according to claim 1, characterized in that, When the oil cylinder (6) is not extended, the end of the pull hook (2) extends out of the guide frame (3).
5. A garbage bin pulling mechanism according to claim 1, characterized in that, The first horizontal straight groove and the second horizontal straight groove coincide, and the end of the first arc-shaped groove is located directly below the end of the second arc-shaped groove.
6. A garbage bin pulling mechanism according to claim 1, characterized in that, The second guide groove (12) is provided with sensor mounting brackets (9) at both ends. The sensor mounting brackets (9) are connected to the connecting plate (11). The sensor mounting brackets (9) are provided with sensors that can sense the second guide wheel (8).
7. A garbage bin pulling mechanism according to claim 1, characterized in that, The width of the first arc-shaped groove is greater than the width of the second arc-shaped groove.
8. A garbage bin pulling mechanism according to claim 1, characterized in that, The width between the two uprights (1) is slightly greater than the width of the pull hook (2) and the guide frame (3).
9. A garbage bin pulling mechanism according to claim 1, characterized in that, The fixed frame is equipped with protective plates (10) at both the upper and lower ends.
10. A garbage bin pulling mechanism according to claim 9, characterized in that, An anti-interference groove is provided on the protective plate (10) at the lower end of the guide frame (3) corresponding to the first arc groove.