Flexible sucker wind shielding curtain capable of being opened in limited mode and resetting automatically

Abstract

The utility model discloses a flexible suction cup wind shielding curtain capable of being opened in a limited mode and resetting automatically, and particularly relates to the technical field of garbage motor sweepers, the flexible suction cup wind shielding curtain comprises a plurality of front wind shielding curtains and a plurality of rear wind shielding curtains, and the structures of the front wind shielding curtains and the rear wind shielding curtains are completely the same and are of T-shaped structures; connecting sleeves are integrally formed at the top of the front windshield curtain and the top of the rear windshield curtain, and mandrels penetrate through the connecting sleeves; the flexible suction cup wind shielding curtain comprises a plurality of front wind shielding curtains and a plurality of rear wind shielding curtains, the front wind shielding curtains and the rear wind shielding curtains are distributed in a staggered mode, and the adjacent front wind shielding curtains and the adjacent rear wind shielding curtains are arranged in a central symmetry mode. The wind shielding curtain can easily swing backwards around the core shaft when being pushed by front garbage, the resistance is very small, the swing angle is very large and is not limited theoretically, meanwhile, non-adjacent wind shielding curtain sections are not stressed at all, damping constraint is not generated, and the situation that the opening degree is too large due to follow-up swing is avoided.

Description

Technical Field

[0001] This utility model relates to the field of garbage sweepers, specifically to a flexible suction cup windshield curtain that opens in a limited manner and automatically resets. Background Technology

[0002] Using negative pressure airflow to pick up road debris is a reliable and efficient working principle that has been widely adopted in modern sweeper trucks. A key component of this type of sweeper truck is the suction cup, which uses the negative pressure airflow generated by the overhead fan to suck up debris particles from the road surface into the garbage bin. The suction cup's ability to pick up debris is crucial to the overall sweeping and cleaning capabilities of the vehicle.

[0003] For a given fan, the output airflow and air pressure are two factors that determine its efficiency and energy consumption, both of which are directly related to the airflow allowed into the suction cup. Only when the airflow entering the suction cup is appropriate can suitable airflow and air pressure be obtained. The airflow entering the suction cup depends on the gap between the suction cup and the road surface. In particular, the wind deflector in front of the suction cup must both block the wind and limit the airflow, while allowing debris of the largest possible diameter to enter the suction cup.

[0004] It's worth noting that the gap between the suction cup and the road surface also serves as a channel for debris particles to enter the suction cup. A larger ground clearance allows larger debris particles to enter, resulting in a larger airflow but lower air pressure. Conversely, a smaller ground clearance allows smaller debris particles to enter, resulting in higher air pressure but a smaller airflow, failing to generate a sufficiently fast airflow. Furthermore, large-diameter particles cannot enter the suction cup and are thus missed. Therefore, sweeper trucks install windbreaks with elastic and flexible materials, such as rubber sheets, around the suction cup. These windbreaks fix the ground clearance of the suction cup while allowing debris of a certain size to enter, and can be adjusted to compensate for wear during use. However, while these windbreaks are simple in structure, their performance is poor. The main issue is that the fixed ground clearance cannot accommodate debris of different sizes on the road surface. Debris with a diameter larger than the ground clearance often cannot enter the suction cup, leading to the embarrassing situation where the sweeper truck's suction cup pushes the debris forward without successfully sucking it in. While some trash particles with a diameter close to the ground clearance of the windshield can squeeze in, even a single trash particle can cause the entire windshield to deform, resulting in a significant change in airflow and rapid wear of the windshield.

[0005] Completely different from the scene on municipal streets, the garbage on highways is complex in type and varies greatly in particle size. Using the existing windshield curtain for highway sweeper trucks would result in a large amount of leakage, which would seriously affect the application effect of the highway sweeper trucks. Utility Model Content

[0006] The purpose of this invention is to provide a flexible suction cup windbreak curtain that opens in a limited manner and automatically resets, in order to solve the above-mentioned shortcomings in the technology.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a flexible suction cup windshield curtain that opens in a limited manner and automatically resets, serving as a windshield curtain on the front side of the suction cup, comprising several front windshield curtains and several rear windshield curtains, wherein the front windshield curtains and the rear windshield curtains have the same structure and are both T-shaped structures.

[0008] The top of the front windshield curtain and the top of the rear windshield curtain are both integrally formed with connecting sleeves, and a spindle runs through the inside of the connecting sleeves.

[0009] Several front windshield curtains and several rear windshield curtains are staggered, and adjacent front windshield curtains and rear windshield curtains are arranged in a centrally symmetrical manner.

[0010] Preferably, the edges of both the front and rear windshields are curved.

[0011] Preferably, the length of the windshield formed by several front windshield curtains and several rear windshield curtains is the same as the length of the suction cup.

[0012] Preferably, the windbreak curtain is installed perpendicular to the road surface.

[0013] Preferably, the windbreak curtain is inclined towards the road surface.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0015] The flexible, limited opening and automatic reset suction cup windproof curtain provided by this utility model achieves ideal flexibility of the windproof curtain. This is reflected in the fact that when the windproof curtain is pushed by the garbage in front, it can easily swing backward around the core axis with very little resistance and a large swing angle. Theoretically, it is not limited and allows large-diameter garbage to enter the suction cup smoothly. At the same time, the non-adjacent windproof curtain sections are completely unaffected by force, do not generate damping constraints, and will not swing with the windproof curtain, causing the opening of the windproof curtain to be too large, affecting the normal air volume and air pressure.

[0016] Limited opening is achieved, which means that only a limited number of windbreak sections pushed by garbage particles swing. On the entire width of the windbreak, only a limited number of windbreak sections within a limited width swing. At the same time, the swing angle of the windbreak section is also limited. Although theoretically the swing angle of the windbreak section is not limited in a large range, the actual swing angle depends entirely on the vertical height of the garbage particles. The smaller the vertical height, the smaller the swing angle; the larger the vertical height, the larger the swing angle. That is, the swing angle of the windbreak section automatically adapts to the size of the garbage particles, and there is no problem of over-opening.

[0017] It achieves automatic reset of the windproof curtain section, responds promptly, and requires no manual operation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is the front view of the present invention;

[0021] Figure 3 This is a side view of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the windshield curtain of this utility model;

[0023] Figure 5 This is a cross-sectional view of the connecting sleeve of this utility model;

[0024] Figure 6 This is a top view of the connection between the front and rear windshields of this utility model;

[0025] Figure 7 This is a bottom view of the suction cup of this utility model;

[0026] Figure 8 for Figure 7 Enlarged view of part A in the image;

[0027] Figure 9 This is a front view of the windbreak curtain of this utility model with the plumb bob facing downwards;

[0028] Figure 10 This is a cross-sectional view of the suction cup of the windshield curtain when the plumb bob is installed downwards.

[0029] Figure 11 This is a front view of the windbreak curtain of this utility model installed at an angle;

[0030] Figure 12 This is a cross-sectional view of the suction cup when the windshield curtain of this utility model is installed at an angle.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Spindle; 2. Connecting sleeve; 3. Front windshield curtain; 4. Rear windshield curtain. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0034] This utility model provides, for example Figure 1-8 The illustration shows a flexible suction cup front windshield curtain that opens in a limited manner and automatically resets, including several front windshield curtains 3 and several rear windshield curtains 4. The front windshield curtains 3 and the rear windshield curtains 4 have the same structure and are both T-shaped.

[0035] The top of the front windshield curtain 3 and the top of the rear windshield curtain 4 are both integrally formed with a connecting sleeve 2, and a spindle 1 runs through the inside of the connecting sleeve 2.

[0036] Several front windshield curtains 3 and several rear windshield curtains 4 are staggered, and adjacent front windshield curtains 3 and rear windshield curtains 4 are arranged in a centrally symmetrical manner.

[0037] Furthermore, the edges of both the front windshield curtain 3 and the rear windshield curtain 4 are curved.

[0038] Furthermore, the length of the windshield formed by several front windshield curtains 3 and several rear windshield curtains 4 is adapted to the length of the suction cup.

[0039] Furthermore, the windshield curtain is installed perpendicular to the road surface.

[0040] Furthermore, the windshield curtain can also be installed at an angle relative to the road surface.

[0041] The main principle of this invention is to install a spindle 1 on a suction cup, and then string together several front windshield curtains 3 and several rear windshield curtains 4 in an alternating arrangement to form a complete "suction cup front windshield curtain".

[0042] Each front windshield curtain 3 and each rear windshield curtain 4 can rotate around the spindle 1. Simultaneously, each front windshield curtain 3 has a unidirectional synchronous constraint relationship with the two rear windshield curtains 4 on either side (i.e., when one front windshield curtain 3 rotates towards the rear windshield curtain 4, it will cause the two adjacent rear windshield curtains 4 to rotate backward simultaneously). This increases the ground clearance, allowing debris particles to enter the suction cup. Afterward, the windshield curtain segments will automatically fall back to their original state under gravity, and the ground clearance will return to the set value. During this operation, only three windshield curtain segments swing under the pressure of debris particles; all other windshield curtain segments maintain their original normal state—the so-called flexible windshield curtain. The "limited opening" in the title refers to the fact that the lateral length of the windshield curtain opening is limited, depending on the size of the debris particles. It also refers to the fact that the vertical height of the windshield curtain opening is limited, depending on the height (equivalent diameter) of the debris particles, and will never exceed the equivalent diameter of the debris particles. After the garbage particles pass through, the windshield section swings back to its original state under its own gravity, requiring no human intervention whatsoever; this is known as automatic reset.

[0043] Typically, the wind deflector is installed in front of the suction cup, spanning the entire width of the suction cup. Depending on the material density of the wind deflector section, it can be installed vertically downwards (e.g., ...). Figure 9 As shown), it can also be installed tilted forward (as shown). Figure 11 (as shown), to obtain appropriate start-up and reset responses as well as other performance characteristics.

[0044] The windbreak curtain, with the plumb bob mounted downwards in front of the suction cup, is perpendicular to the road surface under normal operating conditions (e.g., Figure 10 As shown, when encountering large-diameter debris particles, if they cannot directly enter the suction cup from under the windbreak curtain, the debris particles will collide with and compress the corresponding windbreak curtain segment (here, three segments) or its adjacent windbreak curtain segments (here, three segments) from the plumb bob position and swing backward until the debris particles enter the suction cup. Then, the already opened windbreak curtain segments (here, three segments) will swing back to their original position under gravity, restoring normal ground clearance and airflow. It can be seen that the normal ground clearance of this windbreak curtain is A (set as needed), and the maximum allowable debris particle size to enter the suction cup is B (limited by the suction cup opening height), allowing various debris particles of different sizes with significantly different equivalent diameters to smoothly enter the suction cup.

[0045] The windproof curtain, which is tilted forward and installed in front of the suction cup, tilts forward at a certain angle α during normal operation (e.g., ...). Figure 12 As shown), when encountering large-diameter debris particles that cannot directly enter the suction cup from under the windshield, the debris particles will collide with and compress the corresponding windshield segment (here, segment 3) and its adjacent windshield segments 1, 3, or 4, causing them to... Figure 9 The tilted position shown indicates that the windshield section (section 3 in this case) swings backward until the debris particles enter the suction cup. Then, under gravity, it reverses and resets, restoring normal ground clearance and airflow. It can be seen that the normal ground clearance of this windshield is A (set as needed), and the maximum allowable debris particle size to enter the suction cup is B (limited by the suction cup opening height). This allows debris particles of various sizes with significantly different equivalent diameters to smoothly enter the suction cup. Furthermore, this forward-tilted windshield has two major advantages: firstly, it facilitates the entry of debris particles into the suction cup, significantly reducing the frontal collision force between debris particles and the windshield section (section 3 in this case), thus reducing wear on the windshield section (section 3 in this case); secondly, it improves the tightness of the connection after the windshield section (section 3 in this case) resets. After resetting, the tilted windshield section (section 3 in this case) overlaps with each other, and gravity presses down on the joint surface, making the fit tighter and the seal better.

[0046] The windbreak section can be made of different materials. For example, materials with a certain degree of magnetism can improve its fit and sealing after repositioning. Materials with good flexibility can also make the windbreak more impact-resistant and durable during high-speed operation.

[0047] The flexible, limited-opening, and automatically resetting suction cup windbreak provided by this utility model achieves ideal flexibility in the windbreak. This is reflected in its ability to easily swing backward around its core axis when pushed by debris, with minimal resistance and a large, theoretically unrestricted swing angle. Simultaneously, non-adjacent windbreak sections are completely unaffected by force, resulting in no damping constraints. Limited opening is achieved because only a limited number of windbreak sections pushed by debris particles swing. Across the entire width of the windbreak, only a limited number of sections within a finite width swing. Furthermore, the swing angle of the windbreak sections is also limited. Although theoretically the swing angle of the windbreak sections is unrestricted over a wide range, the actual swing angle depends entirely on the vertical height of the debris particles. A smaller vertical height results in a smaller swing angle, and a larger vertical height results in a larger swing angle. In other words, the swing angle of the windbreak sections automatically adapts to the size of the debris particles, eliminating the problem of over-opening. Automatic resetting of the windbreak sections is achieved with timely response and no manual operation required.

[0048] The following issues were specifically addressed: First, it resolved the problem that while existing rubber windshields have a certain degree of elasticity, their elastic modulus is still too high for this application, causing either debris particles to be unable to enter the suction cup or the windshield to wear out or even tear too quickly. Second, it resolved the problem of manually operated pneumatic opening mechanisms in some vehicle models, designed to address the issue of insufficient ground clearance of the suction cups, which open fully regardless of the size of the debris particles, resulting in a sudden and significant change in airflow and pressure. Moreover, manually operating the suction cup opening is impractical and infeasible under high-speed operation.

[0049] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A flexible suction cup windbreak curtain with limited opening and automatic reset, characterized in that: It includes several front windshield curtains (3) and several rear windshield curtains (4), and the front windshield curtains (3) and the rear windshield curtains (4) have the same structure and are both T-shaped. The top of the front windshield curtain (3) and the top of the rear windshield curtain (4) are integrally formed with a connecting sleeve (2), and a spindle (1) runs through the inside of the connecting sleeve (2). Several front windshield curtains (3) and several rear windshield curtains (4) are staggered, and adjacent front windshield curtains (3) and rear windshield curtains (4) are arranged in a centrally symmetrical manner.

2. The flexible suction cup windbreak curtain with limited opening and automatic reset according to claim 1, characterized in that: The edges of the front windshield (3) and the rear windshield (4) are both curved.

3. The flexible suction cup windbreak curtain with limited opening and automatic reset according to claim 1, characterized in that: The length of the windshield formed by several front windshield curtains (3) and several rear windshield curtains (4) is adapted to the length of the suction cup.

4. The flexible suction cup windbreak curtain with limited opening and automatic reset according to claim 1, characterized in that: The windbreak curtain is installed perpendicular to the road surface.

5. A flexible suction cup windbreak curtain with limited opening and automatic reset according to claim 1, characterized in that: The windbreak curtain is set at an angle to the road surface.

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