Bidirectional obstacle avoidance device for nozzle of high-pressure washing vehicle and high-pressure washing vehicle

Abstract

The utility model designs a bidirectional obstacle avoidance device for a nozzle of a high-pressure washing vehicle and the high-pressure washing vehicle. The bidirectional obstacle avoidance device comprises a fixed seat connected with a vehicle frame, a first torsional pendulum structure is movably connected below the fixed seat, a second torsional pendulum structure is hinged below the first torsional pendulum structure, and the second torsional pendulum structure is connected with the nozzle; each torsional pendulum structure is provided with a reset mechanism, the reset directions of the two reset mechanisms are opposite, the two torsional pendulum structures are slidably connected with lifting rods, and the upper portions of the lifting rods are connected with the fixing base. The device solves the problem that a high-pressure washing vehicle cannot enable a nozzle to work on the ground as far as possible at the cost of protecting the nozzle, increasing the gap between the nozzle and the ground and sacrificing the working effect.

Description

Technical Field

[0001] The utility model relates to the field of sanitation vehicles, and specifically discloses a bidirectional obstacle avoidance device for a nozzle of a high-pressure washing vehicle and a high-pressure washing vehicle. Background Art

[0002] With the improvement of urban environmental governance standards, high-pressure washing vehicles play an important role. Road washing is one of the main functions of high-pressure washing vehicles. In order to achieve a better cleaning effect, the nozzle device needs to be as close to the ground as possible, but it also brings many risks of the nozzle hitting the ground and other obstacles. Therefore, a device that can avoid obstacles for the nozzle can be designed to solve the problem of nozzle protection when the high-pressure washing vehicle is moving forward or reversing. However, traditional obstacle avoidance only allows the nozzle to softly hit the obstacle to achieve the purpose of obstacle avoidance. Due to the high speed of the vehicle, the soft impact will also cause slight damage to the nozzle.

[0003] Patent CN216379342 U discloses a suction cup structure for a washing and sweeping vehicle, which uses a cylinder to pull a steel wire rope, which passes through a pulley and is connected to the suction cup, and can control the lifting of the suction cup to avoid obstacles on complex roads. However, this structure is a passive obstacle avoidance structure, that is, the suction cup is raised by providing an additional driving force, and effective coordination between the road surface state detector and the cylinder is required to complete it. In addition, due to the elastic deformation of the steel wire rope, the accuracy of the lifting displacement will decrease after long-term use, and the height will not meet the obstacle avoidance requirements, causing the suction cup and the nozzle to be damaged.

[0004] Patent CN216194372U discloses a side-impact telescopic obstacle avoidance structure for a washing and sweeping vehicle, which realizes obstacle avoidance of the side-impact mechanism through an electric push rod, a crank connecting rod, a swing arm and a spring. The structure is also a passive obstacle avoidance structure driven by an external force, and also requires effective coordination between the road condition detector and the electric push rod to complete. Utility Model Content

[0005] In view of the above problems, the utility model designs a two-way obstacle avoidance device for a high-pressure washing vehicle nozzle and a high-pressure washing vehicle. The device solves the problem that the high-pressure washing vehicle cannot operate the nozzle as close to the ground as possible at the expense of sacrificing working effect in order to protect the nozzle.

[0006] A two-way obstacle avoidance device for a high-pressure washing vehicle nozzle comprises a fixed seat connected to a vehicle frame, a first torsion pendulum structure is movably connected below the fixed seat, a second torsion pendulum structure is hinged below the first torsion pendulum structure, and the second torsion pendulum structure is connected to the nozzle; each group of torsion pendulum structures is provided with a reset mechanism, and the reset directions of the two groups of reset mechanisms are opposite, and the two groups of torsion pendulum structures are slidably connected to a lifting rod, and the upper part of the lifting rod is connected to the fixed seat.

[0007] Preferably, the reset mechanism is a torsion spring.

[0008] Preferably, the first torsion pendulum structure includes a first frame, which is an inverted U-shaped structure, and the lower ends of the two wing plates of the first frame are hingedly connected to an adapter frame. A first torsion spring is installed at the first hinge point where the two wing plates of the first frame are connected to the adapter frame, and the upper end spring head of the first torsion spring is connected to the first frame, and the lower end spring head of the first torsion spring is connected to the adapter frame.

[0009] Preferably, the second torsion pendulum structure includes a second frame, which is a regular U-shaped frame, and the upper ends of the two wing plates of the regular U-shaped frame are hinged to the adapter frame. A second torsion spring with a force direction opposite to that of the first torsion spring is installed at the second hinge point where the two wing plates of the second frame are hinged to the adapter frame, and the upper end spring head of the second torsion spring is connected to the adapter frame, and the lower end spring head of the second torsion spring is connected to the second frame.

[0010] Preferably, a right limit plate assembly is installed on the right side of the first frame and the right side of the adapter frame, the lower plate of the right limit plate assembly is slidably connected to the right lifting rod, and the upper end of the right lifting rod is hinged to the fixing seat.

[0011] Preferably, a left limit plate assembly is installed on the left side of the second frame and the left side of the adapter frame, the lower plate of the left limit plate assembly is connected to a left lifting rod, and the upper end of the left lifting rod is slidably connected to the fixing seat up and down.

[0012] Preferably, the left limit plate assembly and the right limit plate assembly both include a positive L-shaped upper plate and an inverted L-shaped lower plate, and the transverse plate of the upper plate and the transverse plate of the lower plate abut against each other.

[0013] The utility model also discloses a high-pressure washing vehicle, which is provided with the bidirectional obstacle avoidance device as described above.

[0014] Beneficial effects of the utility model:

[0015] The utility model installs two sets of torsion swing mechanisms with opposite reset directions between the frame and the nozzle and a lifting rod connected to the torsion swing mechanism, so that the nozzle can be softly hit against the obstacle while raising the height of the nozzle, so as to achieve the purpose of obstacle avoidance by crossing the obstacle instead of hitting the obstacle. It can also realize automatic obstacle avoidance with automatic reset, solving the problem that the nozzle is easily damaged when hitting the obstacle and the problem that the existing obstacle avoidance structure needs energy consumption and early warning perception and feedback. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the front structure of the utility model Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the front structure of the utility model Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the back structure of the utility model;

[0020] In the figure: 1. guide column, 2. fixed seat, 3. first frame, 4. first torsion spring, 5. first hinge shaft, 6. second torsion spring, 7. second frame, 8. second hinge shaft, 9. adapter seat, 10. nozzle, 11. left lifting rod, 12. right lifting rod, 13. adapter frame, 14. right limit plate assembly, 15. left limit plate assembly. DETAILED DESCRIPTION

[0021] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0022] like Figure 1-3As shown, the utility model discloses a bidirectional obstacle avoidance device for a high-pressure washing vehicle nozzle, in which a fixing seat 2 is installed on a vehicle frame, the fixing seat includes a bottom plate and a side plate, the side plate is used to connect with the vehicle frame, a through hole is processed on the bottom plate, two guide pillars 1 are slidably connected in the through hole, the lower ends of the two guide pillars are commonly connected to a first frame 3, the first frame is an inverted U-shaped structure, the lower ends of the two wing plates of the first frame are connected by a first hinge shaft 5, between the two wing plates, an adapter frame 13 is set outside the first hinge shaft, and a first torsion spring 4 is also set outside the hinge shaft, the upper end spring head of the first torsion spring is connected to one of the wing plates of the first frame 4, and the lower end spring head of the first torsion spring is connected to the side wall of the adapter frame. A right limit plate assembly 14 is installed between the right side surfaces of the two wing plates of the first frame 3 and the right side surface of the adapter frame 13, the right limit plate assembly includes a positive L-shaped upper plate connected to the first frame and an inverted L-shaped lower plate connected to the adapter frame, and the cross plate of the upper plate and the cross plate of the lower plate abut against each other. The right lifting rod 12 is installed on the front side of the lower plate by a first screw. The right lifting rod is processed with a long slide groove, which is sleeved on the outside of the first screw. The upper end of the right lifting rod is rotatably connected to the fixing seat 2 by a second screw.

[0023] A second hinge shaft 8 is installed below the adapter frame 13, and the two ends of the second hinge shaft are connected to the two wing plates of the second frame. The second frame is an inverted U-shaped structure. A second torsion spring 6 with a force direction opposite to that of the first torsion spring 4 is mounted on the outside of the second hinge shaft. The upper spring head of the second torsion spring is connected to the adapter frame 13, and the lower spring head of the second torsion spring is connected to the second frame 7. A left limit plate assembly 15 is arranged on the left side of the second frame 7 and the left side of the adapter frame 13. The left limit plate assembly includes a positive L-shaped upper plate connected to the adapter frame and an inverted L-shaped lower plate connected to the second frame. The horizontal plate of the upper plate abuts against the horizontal plate of the lower plate. The left lifting rod 11 is hinged on the front side of the lower plate by a third screw. A long slide groove is processed on the upper end of the left lifting rod. The long slide groove is connected to the fixing seat for up and down sliding by a fourth screw.

[0024] An adapter seat 9 is installed at the lower end of the second frame, and the adapter seat is connected to the nozzle 10.

[0025] The movement process of the structure is as follows:

[0026] The washing vehicle drives the nozzle 10 forward (i.e., to the left) and sprays water to the ground through the nozzle. When encountering an obstacle or the road surface suddenly rises, the nozzle 10 is subjected to a force to the right and upward. At this time, there are two situations:

[0027] 1. When the height of the obstacle is relatively small, the driving nozzle 10, together with the second frame 7, the adapter frame 13, the first frame 3 and the guide column 1 connected in sequence above, rises along the through hole of the fixing seat 2, and the long slide grooves on the lifting rods on both sides slide upward along the corresponding screws to achieve the obstacle avoidance function. When the wheel passes the fault, the entire device is reset under the action of gravity;

[0028] 2. When the obstacle is relatively high, the first torsion spring 4 can be regarded as a rigid structure, the nozzle 10 and the second frame 7 swing to the right around the second hinge shaft 8, the second torsion spring 6 is deformed by force, and while the second frame swings to the right, the lower plate in the left limit plate assembly 15 on the left side of the second frame pulls the left lifting rod 11 to move downward, and at the same time, the lower plate in the right limit plate assembly 14 on the right side of the adapter frame 13 pushes the right lifting rod 12 to move upward. The nozzle 10 swings to the right and rises upward under the action of the movement of the entire device to achieve an obstacle avoidance effect. When the wheel passes the fault, the entire device is reset under the action of the restoring force of the second torsion spring, and the nozzle returns to its original state.

[0029] When the washing vehicle drives the nozzle 10 to reverse (i.e., to the right), when encountering an obstacle or the road surface suddenly rises, the nozzle 10 is subjected to leftward and upward forces. At this time, there are also two situations:

[0030] 1. When the height of the obstacle is relatively small, the driving nozzle 10, together with the second frame 7, the adapter frame 13, the first frame 3 and the guide column 1 connected in sequence above, rises along the through hole of the fixing seat 2, and the long slide grooves on the lifting rods on both sides slide upward along the corresponding screws to achieve the obstacle avoidance function. When the wheel passes the fault, the entire device is reset under the action of gravity;

[0031] 2. When the obstacle is relatively high, the second torsion spring 6 can be regarded as a rigid structure. The nozzle 10, the second frame 7 and the adapter frame 13 swing to the left around the first hinge shaft 5, and the first torsion spring 4 is deformed by force. When the first frame swings to the left, the lower plate in the right limit plate assembly 14 on the right side of the first frame pulls the right lifting rod 12 to move upward. At the same time, the lower plate in the left limit plate assembly 15 on the left side of the adapter frame 13 pushes the left lifting rod 11 to move upward. The nozzle 10 swings to the left and rises upward under the action of the movement of the entire device, assisting the insufficient deformation of the first torsion spring to achieve the obstacle avoidance effect. When the wheel passes the fault, the entire device is reset under the action of the restoring force of the first torsion spring, and the nozzle returns to its original state.

[0032] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A two-way obstacle avoidance device for a high-pressure washing vehicle nozzle, characterized in that: It comprises a fixed seat connected to the frame, a first torsion pendulum structure is movably connected below the fixed seat, a second torsion pendulum structure is hinged below the first torsion pendulum structure, and the second torsion pendulum structure is connected to the nozzle; each group of torsion pendulum structures is provided with a reset mechanism, and the reset directions of the two groups of reset mechanisms are opposite, and the two groups of torsion pendulum structures are slidably connected with a lifting rod, and the upper part of the lifting rod is connected to the fixed seat.

2. A two-way obstacle avoidance device for a high-pressure washing vehicle nozzle according to claim 1, characterized in that: The reset mechanism is a torsion spring.

3. A two-way obstacle avoidance device for a high-pressure washing vehicle nozzle according to claim 1, characterized in that: The first torsion pendulum structure includes a first frame, which is an inverted U-shaped structure. The lower ends of the two wing plates of the first frame are hinged with an adapter frame. A first torsion spring is installed at the first hinge point where the two wing plates of the first frame are connected to the adapter frame. The upper end spring head of the first torsion spring is connected to the first frame, and the lower end spring head of the first torsion spring is connected to the adapter frame.

4. A two-way obstacle avoidance device for a high-pressure washing vehicle nozzle according to claim 3, characterized in that: A right limiting plate assembly is installed on the right side of the first frame and the right side of the adapter frame. The lower plate of the right limiting plate assembly is slidably connected to the right lifting rod, and the upper end of the right lifting rod is hinged to the fixing seat.

5. A two-way obstacle avoidance device for a high-pressure washing vehicle nozzle according to claim 4, characterized in that: The second torsion pendulum structure includes a second frame, which is a regular U-shaped frame. The upper ends of the two wing plates of the regular U-shaped frame are hinged to the adapter frame. A second torsion spring with a force direction opposite to that of the first torsion spring is installed at the second hinge point where the two wing plates of the second frame are hinged to the adapter frame. The upper end spring head of the second torsion spring is connected to the adapter frame, and the lower end spring head of the second torsion spring is connected to the second frame.

6. A two-way obstacle avoidance device for a high-pressure washing vehicle nozzle according to claim 5, characterized in that: A left limit plate assembly is installed on the left side of the second frame and the left side of the adapter frame, the lower plate of the left limit plate assembly is connected with a left lifting rod, and the upper end of the left lifting rod is connected with a fixing seat in an up-and-down sliding manner.

7. A two-way obstacle avoidance device for a high-pressure washing vehicle nozzle according to claim 6, characterized in that: The left limiting plate assembly and the right limiting plate assembly both include a positive L-shaped upper plate and an inverted L-shaped lower plate, and the transverse plate of the upper plate and the transverse plate of the lower plate abut against each other.

8. A high-pressure washing vehicle, characterized in that: The high-pressure washing vehicle has a bidirectional obstacle avoidance device as described in any one of claims 1 to 7.

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