CN107044101B

CN107044101B - Road sweeper suction nozzle and road sweeper

Info

Publication number: CN107044101B
Application number: CN201710445781.9A
Authority: CN
Inventors: 高磊磊; 庄超
Original assignee: Jiangsu XCMG Guozhong Laboratory Technology Co Ltd
Current assignee: Jiangsu XCMG Guozhong Laboratory Technology Co Ltd
Priority date: 2017-06-14
Filing date: 2017-06-14
Publication date: 2022-11-01
Anticipated expiration: 2037-06-14
Also published as: CN107044101A

Abstract

The invention relates to the technical field of road cleaning equipment, in particular to a suction nozzle of a sweeping machine and the sweeping machine. The suction nozzle of the sweeping machine provided by the invention comprises a cavity structure and a suction tube, wherein the cavity structure comprises a shell and a suction pickup cavity positioned in the shell, the suction tube is in air communication with the suction pickup cavity so that garbage on the ground can enter the suction tube through the suction pickup cavity, and the volume of the suction pickup cavity is adjustable. The size of the suction-picking cavity can be adjusted, so that the suction nozzle of the sweeping machine can change the size of the suction force applied to the garbage, is convenient to provide the suction force adaptive to the actual working condition, and is beneficial to improving the garbage suction-picking effect of the suction nozzle of the sweeping machine.

Description

Road sweeper suction nozzle and road sweeper

Technical Field

The invention relates to the technical field of road cleaning equipment, in particular to a suction nozzle of a sweeping machine and the sweeping machine.

Background

As the key operation part of the sweeping machine, the suction nozzle is used for sucking and picking up ground garbage and conveying the garbage to the garbage can, the suction nozzle generally comprises a shell and a suction tube, the shell comprises a front baffle, a rear baffle, a left side plate, a right side plate and a top plate, the front baffle, the rear baffle, the left side plate, the right side plate and the top plate are enclosed to form a sucking and picking cavity with an opening at the lower part, the front baffle is generally an elastic baffle, the lower end of the front baffle inclines towards the sucking and picking cavity, the suction tube is used for communicating the sucking and picking cavity with the garbage can, under the suction action of a fan, the garbage gathered by a sweeping brush and a nozzle enters the sucking and picking cavity from the front baffle and enters the garbage can through the suction tube, and the sweeping of the ground garbage is realized. The garbage suction and pickup capacity of the suction nozzle is an important performance index of the suction nozzle, and the sweeping efficiency and the sweeping effect of the sweeping machine are directly influenced.

The shell of the suction nozzle of the existing sweeping machine is of a welded integrated structure, and the suction tube is welded on the top plate of the shell, so that the volume of the suction cavity is not adjustable. The size of the suction cavity affects the speed of negative pressure attenuation in the cavity and the suction force applied by the suction nozzle to the garbage, so that the suction nozzle of the existing sweeping machine cannot change the suction force.

Ground rubbish is various, both includes the isometric less rubbish of fine gravel and dust, includes the isometric great rubbish of stone again, and moreover, how much different of rubbish is on different road surfaces, the different highway sections on same road surface even, and when rubbish granule variation in size and rubbish how much different, the requirement to suction of suction mouth is all different. Therefore, the suction nozzle of the existing sweeping machine cannot change the size of suction force, cannot effectively adapt to the sweeping requirements of different working conditions, is poor in use flexibility and poor in garbage suction effect.

Disclosure of Invention

The invention aims to solve the technical problems that: the suction nozzle of the existing sweeping machine cannot change the size of suction force, and the garbage suction effect is influenced.

In order to solve the technical problem, the invention provides a suction nozzle of a sweeping machine, which comprises a cavity structure and a suction tube, wherein the cavity structure comprises a shell and a suction picking cavity positioned in the shell, the suction tube is in air communication with the suction picking cavity so that garbage on the ground can enter the suction tube through the suction picking cavity, and the volume of the suction picking cavity is adjustable.

Optionally, the housing encloses a chamber forming a lower opening, wherein: at least part of the shell is movably arranged, so that the volume size of the suction and pick-up cavity can be adjusted; and/or the cavity structure further comprises a separation structure, the separation structure is arranged in the cavity and separates the cavity into suction pickup cavities by contacting with the shell, and the separation structure is movable, so that the volume of the suction pickup cavities can be adjusted.

Optionally, the housing comprises a side plate, the side plate being arranged to be movable; and/or the housing comprises a top plate, which is arranged to be movable.

Optionally, the separating structure is in contact with a side plate of the housing, the chamber is separated to form a first chamber located above and a second chamber located below, and the suction cavity is the second chamber; the partition structure is arranged to be movable up and down.

Optionally, the partition structure comprises a partition plate, and the partition structure is held in airtight contact with the side plate during the up-and-down movement.

Optionally, the separation plate is telescopic, and in the process of moving up and down, the separation plate can change the size of the separation plate by telescoping; and/or, the separation structure further comprises a contact adjusting structure, the separation plate is contacted with at least part of the side plate through the contact adjusting structure, and in the process of moving up and down, the contact adjusting structure can enable the separation structure to be in airtight contact with at least part of the side plate by changing the distance between the separation plate and the separation plate.

Optionally, the contact adjustment structure is connected with the separation plate in a relatively movable manner, and/or the contact adjustment structure comprises an elastic structure and the elastic structure is deformable, so that the contact adjustment structure can maintain the separation structure in air-tight contact with at least part of the side plate by changing the distance between the contact adjustment structure and the separation plate during the up-and-down movement of the separation structure.

Alternatively, the contact adjusting structure includes a contact adjusting unit including a sealing plate through which the separation plate is in contact with at least a portion of the side plate, and the sealing plate and the separation plate are relatively movably connected.

Optionally, the sealing plate is a resilient sealing plate.

Optionally, the contact adjusting unit further comprises an elastic member, wherein the sealing plate has a slot into which the separation plate is movably inserted so that the sealing plate and the separation plate are relatively movably connected; the elastic piece is arranged in the slot and is abutted between the partition plate and the bottom wall of the slot.

Optionally, the housing includes a side plate, the side plate includes a garbage inlet baffle, the garbage enters the suction cavity from the garbage inlet baffle, the garbage inlet baffle is an elastic baffle, and/or the lower end of the garbage inlet baffle is inclined towards the inner side of the cavity relative to the upper end of the garbage inlet baffle; at least a portion of the side plate for air tight contact with the partition structure comprises a waste entry baffle.

Optionally, the divider plate has a downwardly concave recess.

Optionally, the suction tube is disposed in the recess, and a height difference between a highest position of the recess and a lowest position of the recess is greater than or equal to 40mm.

Optionally, the suction tube is fixedly arranged on the shell, and the separation structure is connected with the suction tube in a manner of moving up and down; or the suction tube can be arranged on the shell in a vertically movable manner, and the suction tube is borne on the separation structure and can move up and down along with the separation structure.

Optionally, the suction nozzle of the sweeping machine further comprises a suction pickup cavity adjusting mechanism, and the suction pickup cavity adjusting mechanism is used for adjusting the volume of the suction pickup cavity.

Optionally, the suction cavity adjusting mechanism comprises a height adjusting driving device, and the height adjusting driving device is in driving connection with the separation structure of the cavity structure and is used for driving the separation structure to move up and down so as to adjust the volume of the suction cavity.

Optionally, the height adjustment driving device includes a power mechanism, a lifting rod and a traction member, one end of the traction member is wound on the lifting rod, the other end of the traction member is connected with the separation structure, and the power mechanism is in driving connection with the lifting rod and drives the traction member to drive the separation structure to move up and down by driving the lifting rod to rotate.

Optionally, the suction nozzle of the sweeping machine further comprises a detection device, and the detection device is used for detecting the size of the garbage entering the suction and pick-up cavity; optionally, the suction cavity adjusting mechanism comprises a side plate, the side plate comprises a garbage inlet baffle, garbage enters the suction cavity from the garbage inlet baffle, the garbage inlet baffle is an elastic baffle, and the detection device detects the size of the garbage entering the suction cavity by detecting the deformation of the garbage inlet baffle.

The invention also provides a sweeping machine which comprises the sweeping machine suction nozzle.

The size of the suction cavity of the suction-picking cavity of the suction nozzle of the sweeper truck can be adjusted, so that the size of the suction force applied to the garbage can be changed, the suction force provided by the suction nozzle of the sweeper truck is convenient to adapt to the actual working condition, and the suction-picking effect of the suction nozzle of the sweeper truck is improved.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a perspective view illustrating one embodiment of a nozzle of a sweeping machine according to the present invention.

Fig. 2 shows a front sectional view of fig. 1.

Fig. 3 showsbase:Sub>A cross-sectional viewbase:Sub>A-base:Sub>A in fig. 2.

Fig. 4 shows a schematic enlarged view of part I in fig. 3.

Fig. 5 shows a main sectional view of fig. 1 when the suction tube is lifted to the uppermost position.

Fig. 6 shows a sectional view B-B in fig. 5.

Fig. 7 shows a partial enlarged schematic view of II in fig. 6.

In the figure:

1. a cavity structure; 10. a chamber; 11. a top plate; 12. a front baffle; 13. a left side plate; 14. a right side plate; 15. a tailgate; 16. a rear cover plate; 17. a partition plate; 18. sealing plates; 19. a spring;

2. a suction tube; 21. a sprinkler head;

3. a height adjustment drive device; 31. a power mechanism; 32. a lifting bar; 33. a traction member;

4. and (4) a detection device.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In the description of the present invention, it should be understood that the terms "first", "second", etc. are used to define the components, which are only used for the convenience of distinguishing the corresponding components, and if not stated otherwise, the above terms have no special meanings, and therefore, should not be construed as limiting the scope of the present invention.

It should be noted that, for convenience of description, in the case where no description is made on the contrary, the azimuth or positional relationship indicated by the following terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom" etc. is defined based on the azimuth or positional relationship when the sweeping vehicle is traveling, where "rear", "left" and "right" are defined with the advancing direction of the sweeping vehicle as the front and with the advancing direction of the sweeping vehicle as the facing direction; the terms "inner" and "outer" refer to the interior and exterior of the respective component as they relate to their own profile.

Figures 1-7 show one embodiment of the suction nozzle of the sweeping vehicle of the present invention. Referring to fig. 1-7, the suction nozzle of the sweeping machine provided by the invention comprises a cavity structure 1 and a suction tube 2, wherein the cavity structure 1 comprises a shell and a suction pickup cavity positioned in the shell, the suction tube 2 is in air communication with the suction pickup cavity so that garbage on the ground can enter the suction tube 2 through the suction pickup cavity, and the volume of the suction pickup cavity is adjustable.

The size of the suction cavity of the suction pick-up cavity of the suction nozzle of the sweeper truck can be adjusted, so that the size of the suction force applied to the garbage can be changed, the suction nozzle of the sweeper truck can provide the suction force adaptive to the actual working condition more flexibly, and the suction nozzle of the sweeper truck is beneficial to improving the garbage suction pick-up effect of the suction nozzle of the sweeper truck.

In the present invention, the housing encloses a chamber 10 which is open at the bottom. The pick-up cavity is located within the housing, which may be either integral to the chamber 10 or part of the chamber 10. In order to allow the volume size of the suction-pick-up chamber to be varied, in the present invention at least part of the housing can be arranged to be movable; and/or, the cavity structure 1 may further include a partition structure disposed in the chamber 10 and partitioning the chamber 10 by contacting with the housing to form a suction pickup cavity, the partition structure being movably disposed.

As one of the embodiments, the partition structure may not be provided, and at least a part of the housing may be provided to be movable. In this embodiment, the suction and pick-up cavity is the whole of the chamber 10, that is, the suction and pick-up cavity is the chamber 10, and the housing forms the cavity wall of the suction and pick-up cavity, so that the movable part of the housing moves, that is, the volume of the suction and pick-up cavity can be changed. For example, the side plates and/or the top plate 11 of the housing may be provided movably. When the side plate of the shell is arranged to be movable, the volume of the suction pick-up cavity can be changed by changing the left-right width and/or the front-back length of the suction pick-up cavity; when the top plate 11 of the housing is movably arranged, the volume of the suction pick-up cavity can be changed by changing the height of the suction pick-up cavity. Since no partition structure is required, in this embodiment, the cavity structure 1 includes fewer structural components, and the structure of the sweeper truck suction nozzle is simpler.

As another embodiment, at least a part of the housing may not be movably provided, but only the partition structure may be provided, and the partition structure may be movably provided. In this case, the suction cavity is no longer the whole of the cavity 10, but is a part of the cavity 10, the partition structure and the housing together enclose the cavity wall forming the suction cavity, and the partition structure forms a part of the cavity wall of the suction cavity, so that the partition structure moves to change the volume of the suction cavity. In the embodiment, the suction size of the suction cavity can be changed only by the movement of the separating structure, and any part of the shell does not need to be movable, so that the structure is simpler, the adjusting process is easier to realize, and the suction size of the suction nozzle of the sweeper truck can be changed more flexibly and conveniently. In addition, in this embodiment, since the housing may still adopt the existing structural form (for example, a welded integral structure) in which the parts are not relatively movable, the structure of the housing does not need to be changed much, and the implementation is easy and the cost is low.

As another embodiment, both the movable partition structure and the housing may be at least partially movable, so that when the suction-pickup cavity is no longer an integral part of the chamber 10 but a part of the chamber 10, the volume of the suction-pickup cavity can be changed by moving the partition structure and the movable part of the housing, thereby realizing more efficient adjustment of the volume of the suction-pickup cavity.

In the present invention, the side plate is a plate forming a side wall of the chamber 10. The side plates may include a front baffle plate 12, a rear baffle plate 15, a left side plate 13 and a right side plate 14, in this case, the cross section of the chamber 10 may be rectangular, and the side plate may be movable, and at least one of the front baffle plate 12, the rear baffle plate 15, the left side plate 13 and the right side plate 14 may be movable; or, when the chamber 10 is a cylindrical chamber, the side plates may also include a front baffle 12 and an arc-shaped plate, and the side plates may be movable, and at least one of the front baffle 12 and the arc-shaped plate may be movable; of course, the chamber 10 may have other shapes such as a triangle, and accordingly, the side plates may have other structures. However, it will be appreciated that whatever the shape of the chamber 10 and the particular configuration of the side plates, in order to facilitate the introduction of the waste, the side plates typically include a waste inlet baffle, and the waste inlet baffle is typically configured to be resilient and/or the lower end of the side plate is inclined towards the inside of the pick-up chamber, so that the waste can be introduced into the pick-up chamber via the waste inlet baffle, for example, when the chamber 10 is a rectangular chamber, the front baffle 12 may be configured as a waste inlet baffle as in the prior art, i.e. the front baffle 12 may be configured to be resilient and/or the lower end of the front baffle 12 may be inclined towards the inside of the pick-up chamber.

In addition, in the present invention, when a partition structure is additionally provided in the housing, the partition structure may be provided to be movable up and down and partition the chamber 10 into a first chamber located above and a second chamber located below by being in contact with a side plate of the housing. In this case, the second chamber is a suction-pickup chamber, that is, the suction-pickup chamber is a lower part of the chamber 10, and the partition structure forms a top wall of the suction-pickup chamber, and since the partition structure moves up and down, the height (size in the up-down direction) of the suction-pickup chamber can be changed, and thus, the volume of the suction-pickup chamber can be changed. Certainly, as an alternative mode, the separation structure can also be arranged to move left and right to separate the chamber 10 into two chambers which are distributed left and right, and the two chambers respectively form two smaller suction-picking cavities, so that the lengths (the size in the left and right directions) of the two suction-picking cavities can be changed by moving the separation structure, and the volume of the two suction-picking cavities can be adjusted, so that the separation structure can be better adapted to road conditions with different garbage distributions in the left and right directions, for example, the garbage is more at the edge of a common road relative to the inner side of the road, and based on the sweeper truck suction nozzle with the separation structure which can move left and right, in the working process of the sweeper truck, the separation structure can be moved left and right to enable the volume of the suction-picking cavity at the side with more garbage distribution to be smaller, so that the suction-picking requirement of more garbage is met, and the volume of the suction-picking cavity at the side with less garbage distribution is larger, so that the suction-picking requirement of less garbage is met, and the road cleaning operation process which is more flexible and efficient is realized; or, the separating structure may also be configured to be movable back and forth and separate the chamber 10 into two chambers distributed front and back, for example, the suction pickup cavity may be a front chamber of the chamber 10, and the separating structure forms a rear wall of the suction pickup cavity, so that the width (size in the front and back direction) of the suction pickup cavity can be changed by moving the separating structure, and further adjustment of the suction pickup cavity volume is achieved. Wherein, for two kinds of alternative, set up the partition structure as two cavities that can reciprocate and utilize the partition structure to separate cavity 10 and form about the distribution, not only the structure is simpler, realizes more easily, and its benefit still lies in, can so that inhale the opening that is used for with ground intercommunication that picks up the chamber still be the whole lower part opening of cavity 10, it is great to inhale the opening area that picks up the chamber and be used for with ground intercommunication to can realize cleaning to the road surface on a large scale, clean efficiency is higher.

Based on the embodiment that the cavity structure 1 comprises a separation structure which separates the chamber 10 into two chambers distributed up and down, and the separation structure can move up and down, the separation structure of the invention can comprise a separation plate 17, and the separation structure keeps airtight contact with the side plate in the process of moving up and down. For example, when the side panels include the front barrier 12, the rear barrier 15, the left side panel 13, and the right side panel 14, the partition structure may be in airtight contact with the front barrier 12, the rear barrier 15, the left side panel 13, and the right side panel 14. Under the condition that the separation structure is in contact with the side plate to separate the chamber 10 into the suction cavity positioned below, the suction cavity is formed by the separation structure and the side plate in a surrounding mode, so that the separation structure is in airtight contact with the side plate in the up-and-down moving process, the air tightness of the suction cavity is effectively improved in the process of adjusting the volume of the suction cavity, and gas leakage is avoided.

In order to realize the airtight contact between the partition structure and the side plates, the partition plate 17 can be directly set to be telescopic, so that the front and back size (width) and/or the left and right size (length) of the partition plate 17 can be adjusted, thus, in the process of moving up and down, the size of the partition plate 17 can be changed through the telescopic movement, and the variation of the gap between the partition plate 17 and the side plates in the process of moving up and down is compensated. For example, the partition 17 may be configured to be retractable forward and backward, so that the partition 17 can compensate for the amount of change in the gap between the partition 17 and the front barrier 12 and/or the rear barrier 15 during the up and down movement by changing its forward and backward dimensions, thereby achieving the purpose of maintaining the partition in airtight contact with the front barrier 12 and/or the rear barrier 15. For another example, the partition plate 17 may be configured to be stretchable left and right, so that the partition plate 17 can compensate for the gap variation between the partition plate 17 and the left side plate 13 and/or the right side plate 14 during the up and down movement by changing the left and right dimensions thereof, thereby achieving the purpose of maintaining the airtight contact between the partition structure and the left side plate 13 and/or the right side plate 14.

Alternatively, in order to achieve the airtight contact of the partition structure with the side plate, the partition structure may be configured to further include a contact adjustment structure by which the partition plate 17 is in contact with at least part of the side plate, and the contact adjustment structure may be capable of maintaining the airtight contact of the partition structure with at least part of the side plate by changing a distance between itself and the partition plate 17 during the up-and-down movement. Through setting up the contact adjustment structure for the structural dimension of division board 17 self can need not to change and can keep the gas tightness contact with the at least part of curb plate, realizes more simple and conveniently, and sealed effect is better.

In order to allow the contact adjusting structure to change the distance between itself and the partition plate 17 during the up-and-down movement, in the present invention, the contact adjusting structure may be relatively movably coupled with the partition plate 17, and/or the contact adjusting structure may include an elastic structure and the elastic structure may be deformable. When the contact adjusting structure is connected with the partition plate 17 in a relatively movable manner, in the up-and-down moving process, along with the increase and decrease of the distance between the partition plate 17 and the side plate, the contact adjusting structure and the partition plate 17 can be far away from or close to each other, so that at least part of the gap variation between the partition plate 17 and the side plate is compensated; when the contact adjustment structure includes a deformable elastic structure, since the deformation of the elastic structure varies with the distance between the partition plate 17 and the side plate during the up-and-down movement, it is also possible to compensate for at least a part of the gap variation between the partition plate 17 and the side plate. Therefore, by relatively movably coupling the contact adjusting structure with the partition plate 17 and/or by including the contact adjusting structure with a deformable elastic structure, it is possible to make the contact adjusting structure maintain the airtight contact with at least part of the side plate by changing the distance between itself and the partition plate 17 during the up-and-down movement.

As an embodiment of the contact-adjusting structure of the present invention, the contact-adjusting structure may include a contact-adjusting unit including a sealing plate 18, the separation plate 17 is in contact with at least a portion of the side plate through the sealing plate 18, and the sealing plate 18 and the separation plate 17 are relatively movably coupled. In this embodiment, the sealing plate 18 and the partition plate 17 are connected to be movable relative to each other, and therefore, in the process of moving up and down, the amount of change in the gap between the partition plate 17 and the side plate can be compensated by the sealing plate 18 moving relative to the partition plate 17, so that the partition plate 17 can be kept in airtight contact with the side plate at all times by the sealing plate 18, and gas leakage is prevented. The sealing plate 18 and the partition plate 17 may be connected to each other in a manner of relative movement by a sleeve joint or a slide rail joint.

As a modified embodiment of the above contact regulating unit, the sealing plate 18 may be further provided as an elastic sealing plate. Based on this, in the process of moving up and down, the sealing plate 18 can compensate the variation of the gap between the partition plate 17 and the side plate by moving away from or approaching to the partition plate 17, and can further compensate the variation of the gap between the partition plate 17 and the side plate by using the deformation of the sealing plate 18 itself, so that the sealing plate 18 can be in closer contact with the side plate, and the air tightness of the suction-pickup cavity is further improved. It can be seen that in this embodiment, the contact adjusting unit changes the distance from the partition plate 17 by both the relative movement of the seal plate 18 and the partition plate 17 and the deformation of the seal plate 18, and the seal plate 18 functions as the elastic structure of the aforementioned contact adjusting structure.

As another modified embodiment of the above-described contact adjusting unit, the contact adjusting unit may further include an elastic member, wherein the sealing plate 18 has a slot into which the partition plate 17 is movably inserted; the elastic piece is arranged in the slot and is abutted between the partition plate 17 and the bottom wall of the slot. In this modified embodiment, the sealing plate 18 and the partition plate 17 are sleeved to be relatively movable, and the elastic member can apply a force to the sealing plate 18 and the partition plate 17 to relatively move the two by changing the deformation during the up-and-down movement, so that the contact adjustment unit can change the distance from the carrier plate 34 by both the relative movement of the sealing plate 18 and the partition plate 17 and the deformation of the elastic member. It can be seen that the elastic member in this embodiment functions as the elastic structure of the aforementioned contact-adjusting structure. The elastic member may be in the form of a spring 19, for example.

Since the garbage inlet baffles included in the side plates are usually deformed and/or inclined as described above, the distance between the partition plate 17 and the garbage inlet baffles may be greatly changed during the up-and-down movement, and it is difficult to maintain the airtight contact between the partition structure and the garbage inlet baffles. Therefore, in order to effectively prevent the air tightness of the suction pick-up chamber from being affected by the failure of the partition plate 17 to contact the trash intake baffle during the up and down movement, at least a portion of the aforementioned side plate for air tight contact with the partition structure includes the trash intake baffle, that is, in the present invention, it is preferable that the partition structure is maintained in air tight contact with at least the trash intake baffle. Accordingly, when the contact adjusting structure is provided, the contact adjusting structure preferably includes at least a first contact adjusting structure provided between the partition plate 17 and the garbage entry baffle for keeping the partition structure in airtight contact with the garbage entry baffle by changing a distance between itself and the partition plate 17 in a process in which the partition structure moves up and down. The first contact adjusting structure can adopt the structure of the contact adjusting unit, that is, one contact adjusting unit can be arranged between the separation plate 17 and the garbage inlet baffle plate and used as the first contact adjusting structure, so that the first contact adjusting structure can change the distance between the first contact adjusting structure and the separation plate 17 through the relative movement of the sealing plate 18 and the separation plate 17 and/or the deformation of the elastic structure (the sealing plate 18 and/or the elastic piece), and the separation plate 17 can be ensured to be in good airtight contact with the garbage inlet baffle plate through the sealing plate 18 all the time in the up-down moving process, thereby effectively preventing the gas from leaking at the contact part of the separation structure and the garbage inlet baffle plate.

Further, when the separation structure is in airtight contact with the whole side plate in the up-and-down moving process, the suction and pickup cavity has better air tightness at each edge of the separation structure in contact with the side plate in the up-and-down moving process, so that the problem of air leakage in the process of adjusting the volume of the suction and pickup cavity can be effectively prevented, and the suction and pickup effect of the suction nozzle of the sweeping machine on ground garbage can be further improved. For example, when the side plates include a rear baffle plate 15, a left side plate 13, and a right side plate 14 in addition to the front baffle plate 12 serving as a trash entry baffle plate, the contact adjustment structure may include not only the first contact adjustment structure provided between the front end of the partition plate 17 and the front baffle plate 12, but also a second contact adjustment unit provided between the rear end of the partition plate 17 and the rear baffle plate 15, a third contact adjustment structure provided between the left end of the partition plate 17 and the left side plate 13, and a fourth contact adjustment structure provided between the right end of the partition plate 17 and the right side plate 14, for adjusting to achieve airtight contact between the partition structure and the front baffle plate 12, the rear baffle plate 15, the left side plate 13, and the right side plate 14, respectively. Of course, the first contact adjusting structure, the second contact adjusting structure, the third contact adjusting structure and the fourth contact adjusting structure may be the same or different.

In the present invention, the partition plate 17 may be a flat plate, but more preferably, the partition plate 17 may be provided with a recess recessed downward. When the suction and picking cavity is moved to the same height position, compared with the condition of a flat plate, the concave part of the partition plate 17 can further reduce the height of the suction and picking cavity, so that the partition plate 17 can further reduce the volume of the suction and picking cavity by utilizing the shape characteristics of the partition plate 17, therefore, the partition plate 17 is provided with the concave part, the volume of the suction and picking cavity can be effectively reduced when the partition plate 17 is moved to any height position, the attenuation speed of negative pressure in the suction and picking cavity is reduced, the suction force of a suction nozzle of the road sweeper on garbage is effectively increased, the garbage sweeping effect is improved, and the garbage sweeping efficiency is improved.

In addition, in order to realize the automatic adjustment of the volume of the suction pickup cavity, the suction nozzle of the sweeping machine can also comprise a suction pickup cavity adjusting mechanism, and the suction pickup cavity adjusting mechanism is used for adjusting the volume of the suction pickup cavity. The suction cavity adjusting mechanism can automatically adjust the size of the suction cavity and automatically adjust the suction force without manual adjustment, so that the suction cavity can be adjusted conveniently and flexibly according to actual working conditions in the cleaning process, the adjusting process is simpler and more efficient, the function of the suction nozzle of the sweeper truck is more complete, and the automation degree is higher.

Based on the embodiment that the cavity structure 1 includes a partition structure which partitions the cavity 10 into two vertically distributed cavities and the partition structure can move up and down, the suction cavity adjusting mechanism of the invention may include a height adjusting driving device 3, and the height adjusting driving device 3 is in driving connection with the partition structure and is used for driving the partition structure to move up and down. As the separation structure separates the cavity 10 into the two cavities which are distributed up and down, the separation structure forms the top wall of the suction pickup cavity, therefore, the height adjusting driving device drives the separation structure to move up and down, the height of the suction pickup cavity can be automatically changed, the volume of the suction pickup cavity is automatically changed, and further the automatic adjustment of the suction force is realized, so that the suction nozzle of the sweeping machine can more flexibly provide the suction force which is adaptive to the actual working condition requirement, the garbage suction pickup effect is improved, and the garbage suction pickup efficiency is improved.

In addition, the suction nozzle of the sweeping machine can not only comprise a suction cavity adjusting mechanism, but also further comprise a detection device 4. Wherein the detection device 4 is used for detecting the size of the garbage entering the chamber 10; the suction cavity adjusting mechanism adjusts the volume of the suction cavity according to the detection result of the detection device 4. By arranging the suction cavity adjusting mechanism and the detection device 4, the suction nozzle of the sweeping machine can flexibly adjust the volume of the suction cavity according to the particle size of ground garbage based on the matching of the detection device 4 and the suction cavity adjusting mechanism, so that the suction force applied by the suction nozzle of the sweeping machine is adapted to the actual requirements of different sizes of garbage, and a more effective and energy-saving garbage suction and picking process is realized.

The garbage enters the suction picking cavity from the position of the garbage inlet baffle plate, the garbage inlet baffle plate is an elastic baffle plate, the deformation of the garbage inlet baffle plate can reflect the particle size of the garbage, namely the size of the deformation of the garbage inlet baffle plate can be changed according to the size of the garbage entering the suction picking cavity, therefore, in order to detect the size of the garbage more conveniently and further simplify the structure, the detection device 4 can be set to detect the size of the garbage entering the cavity 10 by detecting the deformation of the garbage inlet baffle plate, so that the detection process is simpler and more convenient, and the detection result is more accurate. Of course, the detecting device 4 may also adopt other structural forms, for example, the detecting device 4 may also be configured to include a visual detecting device, and detect the volume size of the garbage based on a visual detecting technology.

The invention will be further described with reference to the embodiments shown in figures 1-7.

As shown in fig. 1-7, in this embodiment, the sweeper truck nozzle comprises a cavity structure 1, a suction canister 2, and a suction nozzle cavity adjustment device, wherein: the cavity structure 1 comprises a shell, a cavity 10 formed by enclosing the shell, a rear cover plate 16, a separation structure and an absorption cavity formed by enclosing the separation structure and the shell; the suction tube 2 is arranged on the shell in a way of moving up and down and is communicated with the suction cavity, so that garbage on the ground can enter the suction tube 2 through the suction cavity; the suction cavity adjusting device is used for automatically adjusting the size of the suction cavity according to the size of the pavement garbage, so that the size of the suction force is automatically adjusted to be matched with the size of garbage particles, the use flexibility is enhanced, the garbage suction effect is improved, and the garbage suction efficiency is improved.

As shown in fig. 1 and 2, in this embodiment, the housing includes a top plate 11 and side plates, the side plates include a front baffle plate 12, a rear baffle plate 15, a left side plate 13 and a right side plate 14, the top plate 11, the front baffle plate 12, the rear baffle plate 15, the left side plate 13 and the right side plate 14 enclose to form a chamber 10, and the chamber 10 has a lower opening, so that the chamber 10 is in air communication with the ground, and ground garbage can enter the suction nozzle of the sweeping machine through the lower opening of the chamber 10. Wherein the front baffle 12 acts as a waste entry baffle. As shown in fig. 1, 3 and 6, the front baffle 12 of this embodiment is an elastic baffle (e.g., a rubber plate), and has a certain elasticity, and the deformation amount of the front baffle 12 can be changed according to the particle size of the garbage, and the larger the garbage particles are, the larger the deformation amount of the front baffle 12 is; further, the lower end of the front baffle 12 is inclined inward of the chamber 10 with respect to the upper end of the front baffle 12. Thus, when the garbage is sucked and picked up, the front baffle plate 12 bends towards the inner side of the chamber 10, so that the garbage can enter the suction and picking cavity through a gap between the lower end of the front baffle plate 12 and the ground.

As can be seen from fig. 3 and 6, the rear cover plate 16 is disposed behind the rear baffle 15, and surrounds the rear baffle 15, the left side plate 13, and the right side plate 14 to form a water spray chamber. The water spray chamber is located at the rear side of the chamber 10 and communicates with the chamber 10. A water spray bar (not shown) may be disposed inside the water spray chamber. Through setting up water spray cavity and water spray rod, can utilize water spray rod spun water column to dash the ground rubbish that is located the cavity 10 rear to cavity 10 below to be convenient for this part rubbish that is located the cavity 10 rear gets into suction tube 2 via cavity 10 in, realize picking up inhaling to wider rubbish.

A partition structure is movably disposed in the chamber 10, and is not only used for contacting with the housing and partitioning the chamber 10 to form a suction pickup cavity which is located in the housing and is a part of the chamber 10, but also used for changing the volume size of the suction pickup cavity through movement in the chamber 10. As can be seen from fig. 1 to 7, in this embodiment, the partition structure is arranged substantially horizontally in the chamber 10, and contacts with the side plate of the housing to partition the chamber 10 into a first chamber located above and a second chamber located below, so that the second chamber forms a suction-pickup cavity, and the partition structure forms a top wall of the suction-pickup cavity; moreover, the separating structure is arranged in the cavity 10 in a vertically movable manner, so that the height of the suction-picking cavity can be changed by vertically moving the separating structure, the size of the suction-picking cavity can be changed, and the adjustment of the suction force applied by the suction nozzle of the sweeping machine can be realized.

Further, in order to realize the automatic adjustment of the volume of the suction-pickup cavity and to realize the purpose of flexibly adjusting the volume of the suction-pickup cavity according to the size of the road garbage, in this embodiment, the suction nozzle of the sweeping machine comprises a suction-pickup cavity adjusting device, and the suction-pickup cavity adjusting device comprises a detecting device 4 and a suction-pickup cavity adjusting mechanism. The detection device 4 is used for detecting the size of the pavement garbage; the suction cavity adjusting mechanism is used for driving the separation structure to move up and down according to the detection result of the detection device 4, and the volume of the suction cavity is adjusted by changing the height of the separation structure, so that the negative pressure distribution in the suction cavity is adapted to the actual demands of different sizes of garbage.

The detection device 4 of this embodiment detects the size of the trash by detecting the amount of deformation of the front bezel 12. As can be seen from fig. 3 and 6, in this embodiment, the detecting device 4 is disposed on the front baffle 12, which may be a strain sensor, and detects the bending deformation of the front baffle 12 caused by the passing of the ground garbage in real time, so as to detect the volume of the ground garbage, and feed the detection result back to the suction cavity adjusting mechanism, so that the suction cavity adjusting mechanism drives the separation structure to move up and down according to the size of the ground garbage.

As shown in fig. 2-4, when the detection device 4 detects that the front baffle 12 generates a small deformation amount, the garbage particles are small, the detection device 4 feeds back the detection result to the suction cavity adjusting mechanism, the suction cavity adjusting mechanism drives the separation structure to move downwards, the height of the separation structure is reduced, the volume of the suction cavity is reduced, and the speed of negative pressure attenuation is slowed down, so that sufficient suction force is provided in the suction cavity to suck small garbage such as dust into the cavity 10 and the suction tube 2; when the front baffle 12 is detected to generate larger deformation, the garbage particles are larger, the detection device 4 feeds back the detection result to the suction cavity-picking adjusting mechanism, the suction cavity-picking adjusting mechanism drives the separation structure to move upwards, the height of the separation structure is increased, the volume of the suction cavity is increased, and the suction nozzle of the road sweeper can suck larger garbage.

Therefore, the embodiment can enable the suction nozzle of the sweeping machine to adapt to the suction requirements of garbage with different sizes more flexibly by arranging the detection device 4 and the suction cavity adjusting mechanism, can provide sufficient suction for smaller garbage, can enable larger garbage to pass through smoothly, and is higher in suction efficiency and better in suction effect.

The suction cavity adjusting mechanism of the embodiment comprises a height adjusting driving device 3, wherein the height adjusting driving device 3 is in driving connection with the separation structure of the cavity structure 1 and is used for driving the separation structure to move up and down, so that the size of the suction cavity can be automatically adjusted. In particular, as can be seen from fig. 1 and 2, the height adjustment drive 3 comprises a power mechanism 31, a lifting bar 32 and a traction element 33, wherein: one end of the pulling member 33 is wound on the lifting rod 32, the other end of the pulling member 33 is connected with the separation structure, and the power mechanism 31 is in driving connection with the lifting rod 32 and drives the lifting rod 32 to rotate so that the pulling member 33 drives the separation structure to move up and down. Based on this, the power mechanism 31 is started, the lifting rod 32 rotates, the traction piece 33 is controlled to retract and release, the partition structure can be conveniently driven to move up and down, and the retracting and releasing direction of the traction piece 33 can be changed by changing the rotating direction of the lifting rod 32, so that the moving direction of the partition structure up and down is changed. Wherein, the power mechanism 31 can be a motor, etc.; the pulling member 33 may be a pulling cable, a wire or a rope, etc.

The suction tube 2 is used for communicating the suction pick-up cavity with a garbage can (not shown in the figure) of the sweeping machine, so that the ground garbage entering the suction pick-up cavity can enter the garbage can through the suction tube 2 to be stored. As shown in fig. 1, fig. 2 and fig. 5, in this embodiment, the suction nozzle of the sweeping machine includes two suction tubes 2, the two suction tubes 2 are not welded on the housing any more, but are disposed on the housing in a manner of moving up and down, and the two suction tubes 2 are both supported on the partition structure and can move up and down together with the partition structure. Specifically, each suction tube 2 comprises a tube body and a water spraying head 21, the upper end of the tube body extends out of the chamber 10 from the top plate 11, and the lower end of the tube body extends into the chamber 10 from the top plate 11 and is fixedly connected with the separation structure; the upper end and the lower end of the cylinder body are both provided with openings, the cylinder body is communicated with the suction picking cavity through the opening at the lower end and is communicated with the garbage can through the opening at the upper end, so that garbage entering the suction picking cavity can be conveniently conveyed into the garbage can; the two water spraying heads 21 are respectively arranged at the left side and the right side of the barrel body and are used for spraying water to the inside of the barrel body, so that the dust raising phenomenon generated inside the suction barrel 2 is avoided.

Because suction tube 2 can reciprocate along with the partition structure together, consequently, this embodiment can also realize the regulation to suction tube 2 height in the lump when changing the volume size of suction cavity through changing the partition structure height, is favorable to making suction tube 2's height also adapt to with the operating condition demand more. On one hand, the height of the suction tube 2 also has a certain influence on the volume of the suction cavity, and the lower the height of the suction tube 2 is, the smaller the volume of the suction cavity is, the slower the negative pressure attenuation is, and the larger the suction force is, so that the suction tube 2 can move up and down along with the separation structure in the embodiment, and the adjustment of the suction force of the suction nozzle of the sweeping machine can be further enhanced. On the other hand, because when the height of suction tube 2 is undersized, the ground clearance undersize of suction tube 2 can lead to the unable smooth passing through of granules such as the great stone of volume, the influence is to the effect of picking up of inhaling of great rubbish, consequently, this embodiment will inhale that tube 2 sets up to can reciprocate along with the partition structure together, make the demand that the height of suction tube 2 adapts to not equidimension rubbish more nimble, can also effectively prevent to inhale because of suction tube 2 height is too low and can't realize smoothly picking up great rubbish, help further improving to inhale and pick up the effect and improve and inhale and pick up efficiency. On the other hand, the suction tube 2 is supported on the separation structure in the embodiment, so that the height of the suction tube 2 can be conveniently adjusted by starting the height adjusting driving device 3 to be adapted to the actual working condition requirements, and meanwhile, due to the supporting effect of the separation structure, the suction tube 2 can move up and down more stably, so that the height of the suction tube 2 can be adjusted more stably and effectively; moreover, the synchronous driving of the separation structure and each suction tube 2 is realized based on the same height adjusting and driving device 3, the structure is simpler, and the synchronism of the up-and-down movement between the separation structure and the suction tubes 2 and between the suction tubes 2 is better.

As can be seen from fig. 2, in this embodiment the height adjustment drive 3 is directly connected to the partition structure by means of a traction element 33, but it should be understood that the traction element 33 of the height adjustment drive 3 may alternatively be connected to the suction tube 2, indirectly by being connected to the suction tube 2, which also drives the partition structure and thus the up-and-down movement of the suction tube 2.

It should be noted that the connection relationship among the suction tube 2, the housing and the partition structure is not limited to that shown in the embodiment, for example, the suction tube 2 may still be fixedly disposed on the housing (for example, the suction tube 2 may still be welded on the top plate 11), and the partition structure may be connected to the suction tube 2 in a manner of moving up and down (for example, the partition structure may be sleeved on the lower portion of the suction tube 2), so that, although the suction tube 2 cannot move up and down together with the partition structure, the partition structure may still move up and down, and therefore, the volume of the suction cavity may still be effectively adjusted.

Further, in order to make the suction-pickup cavity have better air tightness all the time in the process of the up-and-down movement of the partition structure, as can be seen from fig. 1-7, the partition structure of this embodiment includes a partition plate 17 and a contact regulating structure, the suction tube 2 is carried on the partition plate 17, and the partition plate 17 is in air tight contact with the whole side plate through the contact regulating structure. Specifically, the partition plate 17 is held in airtight contact with each of the front baffle 12, the rear baffle 15, the left side plate 13 and the right side plate 14 by a contact adjusting structure. More specifically, the contact adjusting structure includes a first contact adjusting structure, a second contact adjusting structure, a third contact adjusting structure, and a fourth contact adjusting structure, and the partition plate 17 is held in airtight contact with the front baffle plate 12, the rear baffle plate 15, the left side plate 13, and the right side plate 14 by the first contact adjusting structure, the second contact adjusting structure, the third contact adjusting structure, and the fourth contact adjusting structure, respectively. Based on this, under the regulating action of contact adjustment structure, inhale and pick up the chamber and have good gas tightness all the time, can effectively prevent gas leakage, make inhale pick up the chamber and all can provide the anticipated sufficient suction that needs of corresponding operating mode when partition structure and suction tube 2 remove to arbitrary high position, realize that more high-efficient and higher-quality rubbish inhales and picks up the process.

The first contact adjusting structure is arranged between the front baffle plate 12 and the front end of the partition plate 17 and used for adjusting and realizing the air-tight contact between the partition structure and the front baffle plate 12 by changing the distance between the first contact adjusting structure and the front end of the partition plate 17 along the front-back direction. Since the front baffle 12 of this embodiment is used as a garbage entrance baffle, and is an elastic baffle, and the lower end of the front baffle is inclined toward the inside of the chamber 10, the distance between the front end of the partition 17 and the front baffle 2 is greatly changed in the process that the partition 17 drives the suction tube 2 to move up and down, and the distance between the front end of the partition 17 and the front baffle 2 is increased when the partition 17 drives the suction tube 2 to move up. Therefore, in order to more effectively maintain the airtight contact between the partition structure and the front barrier 12, as shown in fig. 2 to 7, the first contact-adjusting structure of this embodiment includes a sealing plate 18 and a spring 19, in which: the sealing plate 18 has a slot, specifically, the sealing plate 18 is substantially U-shaped in fig. 4 and 7, and the front end of the partition plate 17 is inserted into the slot movably back and forth and is in contact with the front bezel 12 through the sealing plate 18; the spring 19 is disposed in the slot and abutted between the front end of the partition plate 17 and the bottom wall of the slot. Based on this, in the process that the partition plate 17 drives the suction tube 2 to move up and down, the spring 19 can stretch and contract, the deformation amount of the spring is changed, and in the process that the spring 19 stretches and contracts, the sealing plate 18 and the front end of the partition plate 17 can be close to or away from each other through the relative back-and-forth movement between the sealing plate 18 and the partition plate 17, the distance variation between the front end of the partition plate 17 and the front baffle 2 is compensated by the sealing plate 18 and the spring 19, so that the partition plate 17 can always keep airtight contact with the front baffle 12 through the sealing plate 18, and gas leakage between the front end of the partition plate 17 and the front baffle 12 is effectively prevented.

As can be seen from fig. 2 and 4, when the ground garbage particles are small, the front baffle 12 is less in bending deformation, the height adjusting driving device 3 lowers the partition plate 17 and the suction tube 2 to a lower position, the distance between the front end of the partition plate 17 and the front baffle 2 becomes small, so that the spring 19 is in a compressed state, the seal plate 18 and the front end of the partition plate 17 are close to each other, and the front end of the partition plate 17 is kept in airtight contact with the front baffle 12 through the seal plate 18; as can be seen from fig. 5 and 7, when the ground garbage particles are large, the front baffle 12 is largely bent and deformed, the height adjustment driving device 3 lifts the partition plate 17 and the suction tube 2 to a high position, the distance between the front end of the partition plate 17 and the front baffle 2 is increased, the compression amount of the spring 19 is decreased, and the partition plate 17 and the front end of the partition plate 17 are in a free relaxed state, so that the front end of the partition plate 17 can still keep airtight contact with the front baffle 12 through the seal plate 18.

It can be seen that, based on the cooperation of the sealing plate 18 and the spring 14, during the process of lifting and lowering the partition plate 17 and the suction tube 2 by the height adjusting drive device 3, the front end of the partition plate 17 is always kept in close contact with the front baffle plate 12, so that a good sealing effect is achieved. Of course, the spring 19 may be another elastic member as long as it abuts between the front end of the partition plate 17 and the bottom wall of the slot and can change its own deformation amount in the process of moving the partition plate 17 up and down.

Also, the seal plate 18 of this embodiment is also provided as a resilient seal plate. Thus, in the process that the partition plate 17 drives the suction tube 2 to move up and down, the spring 19 can generate deformation along the front-back direction, the sealing plate 18 can also generate deformation along the front-back direction at the same time, and the deformation in the two aspects can change the distance between the sealing plate 18 and the front end of the partition plate 17 together with the relative front-back movement between the sealing plate 18 and the partition plate 17, so that the front end of the partition plate 17 is always kept in close contact with the front baffle 12 through the sealing plate 18, and the air tightness effect is better. Moreover, the sealing plate 18 is configured as an elastic sealing plate, which has the advantages that, on one hand, the sealing plate 18 can better adapt to the characteristic that the lower end of the front baffle plate 12 inclines towards the inner side of the chamber 10 by changing the deformation of the sealing plate, so as to realize closer contact with the front baffle plate 12; on the other hand, the sealing plate 18 is in flexible contact with the front baffle 12, so that abrasion to the front baffle 12 can be reduced relative to the rigid contact condition, and the sealing plate 18 can be prevented from influencing the deformation of the front baffle 12, so that the accuracy of the detection result of the detection device 4 on the deformation of the front baffle 12 can be further improved, and the adaptability of the height of the separation structure and the height of the suction tube 2 to different working conditions can be further improved.

It can be seen that, in this embodiment, the first contact adjusting structure is not only connected with the front end of the partition plate 17 in a relatively movable back and forth manner, but also includes an elastic structure capable of deforming along the front and back direction, and the elastic structure includes not only the spring 34, but also the sealing plate 18, and under the combined action of the relative back and forth movement and the deformation along the front and back direction, the first contact adjusting structure changes the front and back distance between itself and the front end of the partition plate 17, so that the front end of the partition plate 17 is always kept in close contact with the front baffle plate 12, gas leakage can be prevented more effectively, and actual requirements of different working conditions can be adapted more flexibly. And the elastic structure (the spring 34 and the sealing plate 18) of the first contact adjusting structure does not influence the deformation of the front baffle 12, so that the accuracy of the detection result of the detection device 4 on the deformation amount of the front baffle 12 is higher.

The second contact adjusting structure is disposed between the rear baffle 15 and the rear end of the partition plate 17, and is used for adjusting and achieving air-tight contact between the partition structure and the rear baffle 15 by changing the distance between the second contact adjusting structure and the rear baffle 15 in the front-rear direction. The third contact adjusting structure is disposed between the left side plate 13 and the left end of the partition plate 17, and is used for adjusting and achieving the air-tight contact between the partition structure and the left side plate 13 by changing the distance between the third contact adjusting structure and the left side plate 13 along the left-right direction. The fourth contact adjusting structure is disposed between the right side plate 14 and the right end of the partition plate 17, and is used for adjusting and achieving the air-tight contact between the partition structure and the right side plate 14 by changing the distance between the fourth contact adjusting structure and the right side plate 14 in the left-right direction. Since in this embodiment, the tailgate 15, the left side panel 13, and the right side panel 14 are all inelastic panels and are all disposed substantially vertically, the second contact adjustment structure, the third contact adjustment structure, and the fourth contact adjustment structure can achieve good airtight contact between the partitioning panel 17 and the tailgate 15, the left side panel 13, and the right side panel 14 with relatively simple structures. For example, the second contact adjustment structure, the third structure adjustment structure and the fourth contact adjustment structure of this embodiment may all adopt rubber joint structures, the rubber joints are respectively installed at the rear end, the left end and the right end of the partition plate 17, so that the partition plate 17 is respectively contacted with the back baffle 15, the left side plate 13 and the right side plate 14 through the rubber joints, in the process that the partition plate 17 drives the suction tube 2 to move up and down, the partition plate 17 can be kept in close contact with the back baffle 15, the left side plate 13 and the right side plate 14 by using the deformation of the rubber joints, the airtightness of the suction and pickup cavity at these positions is realized, the negative pressure in the suction and pickup cavity is prevented from being affected by the leakage of gas at these positions, the structure is simple, and the cost is low.

In addition, as shown in fig. 2 and 5, in this embodiment, the partition plate 17 is a wave-shaped bent plate including several peaks and several valleys, which makes the partition plate 17 of this embodiment include a concave portion that is concave downward and a convex portion that is convex upward. Due to the arrangement of the concave portion, the height of the suction-pickup cavity when the partition plate 17 is at the same height position can be reduced, and therefore, the volume of the suction-pickup cavity can be further reduced by the arrangement of the concave portion. Because the smaller the volume of the suction cavity is, the slower the negative pressure attenuation speed in the suction cavity is, the separation plate 17 is provided with the concave part, so that the negative pressure distribution condition in the suction cavity can be further improved when the separation plate 17 moves to any height position, the suction force is increased, and the garbage suction process can be more quickly and thoroughly realized.

More specifically, as can be seen from fig. 2, the partition plate 17 of this embodiment, which includes 4 peaks (protrusions) and 3 valleys (recesses), makes the partition plate 17 of this embodiment include two M-shaped units, which makes it possible to more effectively reduce the volume of the suction-pickup chamber than a case where the partition plate 17 includes two W-shaped units. Of course, the number of crests (projections) and troughs (recesses) is not limited to this, and in practice, the partition 17 may be made to repeatedly extend with the M-type as the basic unit, rather than with the W-type as the basic unit, as long as the partition 17 includes an even number of crests (projections) and an odd number of troughs (recesses), and the number of crests (projections) is one more than the number of troughs (recesses).

Also, as shown in fig. 2 and 5, in this embodiment, two suction cylinders 2 are provided at two valleys, respectively. Thus, both suction cylinders 2 are disposed in the concave portions and are located at the lowest positions of the corresponding concave portions. On the one hand, when the partition plate 17 moves to any height position, the height of the suction tube 2 can be further reduced, the volume of the suction picking cavity is further reduced, and the suction force to the garbage is increased; on the other hand, two adjacent plate surfaces forming the concave part are inclined towards the lower end opening of the suction tube 2, so that the air carrying the garbage can be guided, and the air carrying the garbage can enter the suction tube 2 more smoothly and more efficiently.

In order to further enhance the guiding effect of the two adjacent plate surfaces forming the concave portion, in this embodiment, the height difference between the highest position and the lowest position of the concave portion may be set to be greater than or equal to 40mm, in this case, the included angle between the two adjacent plate surfaces forming the concave portion is larger, so that the air carrying the garbage can be more effectively guided into the suction tube 2, and the garbage suction and collection efficiency is further improved.

In the prior art, a suction-picking cavity between two adjacent suction tubes 2 is large in size, a low-speed area and a vortex area are easy to generate, and the phenomenon of garbage leakage picking is caused frequently. Therefore, in order to further solve the technical problem, as shown in fig. 2 and 5, in this embodiment, two wave troughs for arranging two suction cylinders 2 are spaced by one wave trough, that is, in this embodiment, two suction cylinders 2 are respectively arranged on two wave troughs (recesses) spaced by one wave trough (recess) in the middle. Because the wave trough between two suction tubes 2 can reduce the height of the suction cavity between two suction tubes 2, therefore, two adjacent suction tubes 2 are arranged on two wave troughs (concave parts) of one wave trough (concave part) at the middle interval, the volume of the part of the suction cavity between two adjacent suction tubes 2 can be reduced, thus effectively reducing the low-speed area and the vortex area caused by the large volume of the suction cavity between two adjacent suction tubes 2, effectively reducing the risk of the waste leakage due to the large number of the low-speed area and the vortex area, and enhancing the suction capacity of the suction nozzle of the sweeping machine on the waste.

In conclusion, the embodiment has the advantages that the separation structure and the suction cavity adjusting device are arranged, and the suction tube 2 is arranged to be capable of moving up and down, so that the suction nozzle of the sweeping machine can automatically adjust the volume of the suction cavity and the height of the suction tube 2 in real time according to the particle size of garbage, the volume of the suction cavity and the height of the suction tube 2 can better adapt to the actual working condition requirements, enough suction can be applied to the garbage with smaller particles, the problem that the garbage with larger particles cannot smoothly pass due to the fact that the height of the suction tube 2 from the ground is too low can be solved, the use is more convenient and flexible, the garbage suction efficiency is higher, and the garbage suction effect is better; in addition, in the embodiment, the suction tube 2 is arranged on the concave part of the partition plate 17, and the arrangement mode of the suction tube 2 on the partition plate 17 with the concave part is optimized, so that the negative pressure in the suction pick-up cavity is distributed more uniformly, a low-speed area and a vortex area are reduced more effectively, and the suction force of the suction nozzle of the sweeping machine is further improved; moreover, the air tightness of the suction and pickup cavity can be effectively improved and gas leakage can be prevented by arranging the contact adjusting structure on the partition plate 17.

It should be noted that, although the above embodiment only exemplifies that the suction nozzle of the road sweeper comprises two suction tubes 2, it should be understood by those skilled in the art that the number of the suction tubes 2 may be 1 or more than 2 in other embodiments of the present invention. When the number of the suction tubes 2 is at least two, the number of the concave parts of the partition plate 17 can be just the same as the number of the suction tubes 2, in this case, each suction tube 2 can be arranged corresponding to each concave part one by one; alternatively, the number of the concave portions of the partition plate 17 may be greater than the number of the suction tubes 2, each suction tube 2 may be disposed in one concave portion, and the adjacent suction tubes 2 may be disposed in the adjacent concave portions, or disposed in two concave portions separated by one concave portion. It can be seen that when the suction nozzle of the sweeping machine comprises at least two suction cylinders 2, the partition plate 17 may have at least the same number of recesses as the at least two suction cylinders 2 and one-to-one correspondence. In addition, when the number of the suction tubes 2 is at least two, in the at least two suction tubes 2, any two adjacent suction tubes 2 may be respectively disposed on two recesses spaced by one recess in the middle of the partition plate 17, so as to reduce the height of the pickup cavity between two adjacent suction tubes 2 by the spaced recesses, and reduce the low speed region and the vortex region in the region between two adjacent suction tubes 2.

The suction nozzle of the sweeper truck is applied to the sweeper truck, so that the sweeping efficiency of the sweeper truck can be effectively improved, and the sweeping effect of the sweeper truck can be effectively improved. Therefore, the invention also provides a sweeping machine, which comprises the suction nozzle of the sweeping machine.

In addition, the sweeper adopting the sweeper truck suction nozzle of the sweeper truck suction nozzle can also fix the sweeper truck suction nozzle at a higher position of the sweeper truck, the suction force is increased by directly adjusting the volume of the suction and pickup cavity in the working process, and the sweeper truck suction nozzle is not required to be integrally arranged at a lower position of the sweeper truck, so that the influence on the normal work of the sweeper truck and the normal suction and pickup of larger garbage caused by the interference of the sweeper truck suction nozzle with the larger particles on the road surface or the road surface due to the excessively low height of the sweeper truck suction nozzle is avoided.

The above description is only exemplary of the present invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sweeper truck nozzle, characterized by comprising a cavity structure (1), a suction tube (2) and a suction pickup cavity adjusting mechanism, wherein the cavity structure (1) comprises a shell, a separating structure and a suction pickup cavity in the shell, the shell encloses a cavity (10) with an open lower part, the separating structure is arranged in the cavity (10) and is in contact with a side plate of the shell, the cavity (10) is separated into a first cavity at the upper part and a second cavity at the lower part, the suction pickup cavity is the second cavity, the suction tube (2) is in gas communication with the suction pickup cavity so that garbage on the ground can enter the suction tube (2) through the suction pickup cavity, the separating structure is arranged to be movable up and down so that the volume size of the suction pickup cavity can be adjusted, the suction pickup cavity adjusting mechanism is used for adjusting the volume size of the suction pickup cavity, and the suction pickup cavity adjusting mechanism comprises a height adjusting driving device (3), and the height adjusting driving device (3) is in driving connection with the separating structure and used for driving the separating structure to adjust the volume size of the suction pickup cavity.

2. A sweeper truck nozzle according to claim 1, characterised in that at least part of the housing is arranged to be movable to enable the volume size of the pick-up chamber to be adjustable.

3. A sweeper truck nozzle as claimed in claim 2, wherein said housing includes side plates, said side plates being movably arranged; and/or the housing comprises a top plate, which is movably arranged.

4. The sweeper truck nozzle of claim 1, characterized in that said partition structure comprises a partition plate (17) and said partition structure is in airtight contact with said side plate during the up and down movement.

5. The suction nozzle of the sweeping machine according to claim 4, wherein the dividing plate (17) is provided to be telescopic, and the dividing plate (17) can change its size by telescoping during the up and down movement; and/or, the separation structure further comprises a contact adjustment structure through which the separation plate (17) is in contact with at least part of the side plate, and, during the up-and-down movement, the contact adjustment structure is capable of maintaining the separation structure in airtight contact with at least part of the side plate by changing the distance between itself and the separation plate (17).

6. A sweeper truck nozzle according to claim 5, characterized in that the contact adjustment structure is relatively movably connected with the partition plate (17) and/or that the contact adjustment structure comprises a resilient structure and the resilient structure is deformable to enable the contact adjustment structure to maintain the partition structure in air tight contact with at least part of the side plate by varying the distance between itself and the partition plate (17) during the up and down movement of the partition structure.

7. The sweeper truck nozzle according to claim 5, characterized in that said contact adjustment structure comprises a contact adjustment unit comprising a sealing plate (18), said separation plate (17) being in contact with at least part of said side plate via said sealing plate (18), and said sealing plate (18) being connected to said separation plate (17) in a relatively movable manner.

8. The sweeper truck nozzle of claim 7, characterized in that said sealing plate (18) is a resilient sealing plate.

9. The sweeper truck nozzle according to claim 7, characterized in that said contact adjustment unit further comprises an elastic member, wherein said sealing plate (18) has a slot into which said separation plate (17) is movably inserted to connect said sealing plate (18) and said separation plate (17) in a relatively movable manner; the elastic piece is arranged in the slot and is abutted between the partition plate (17) and the bottom wall of the slot.

10. The sweeping vehicle suction nozzle according to claim 4, wherein the housing comprises a side plate comprising a waste entry baffle from which waste enters the pick-up cavity, the waste entry baffle being a resilient baffle, and/or a lower end of the waste entry baffle being disposed obliquely to an upper end of the waste entry baffle towards an inside of the chamber (10); at least a portion of the side panel for air tight contact with the partition structure comprises the waste entry baffle.

11. A sweeper truck nozzle according to claim 4, characterized in that the partition plate (17) has a downwardly concave recess.

12. A sweeper truck nozzle according to claim 11, characterized in that the suction canister (2) is provided in the recess, the height difference between the highest position of the recess and the lowest position of the recess being greater than or equal to 40mm.

13. The suction nozzle of the sweeping machine according to claim 1, wherein the suction tube (2) is fixedly arranged on the housing, and the partition structure is connected with the suction tube (2) in a manner of moving up and down; or the suction tube (2) is arranged on the shell in a vertically movable manner, and the suction tube (2) is borne on the separation structure and can move up and down along with the separation structure.

14. The suction nozzle of the sweeping machine according to claim 1, wherein the height adjusting driving device (3) comprises a power mechanism (31), a lifting rod (32) and a traction member (33), one end of the traction member (33) is wound on the lifting rod (32), the other end of the traction member (33) is connected with the partition structure, and the power mechanism (31) is in driving connection with the lifting rod (32) and drives the lifting rod (32) to rotate so that the traction member (33) drives the partition structure to move up and down.

15. A sweeper truck nozzle according to claim 1, characterized in that it further comprises a detection device (4), said detection device (4) being adapted to detect the size of refuse entering the pick-up chamber; the suction pickup cavity adjusting mechanism adjusts the volume of the suction pickup cavity according to the detection result of the detection device (4).

16. The suction nozzle of a sweeping machine according to claim 15, wherein the housing includes a side plate, the side plate includes a garbage entrance baffle, garbage enters the suction pick-up cavity from the garbage entrance baffle, the garbage entrance baffle is an elastic baffle, and the detecting device (4) detects the size of the garbage entering the suction pick-up cavity by detecting the deformation amount of the garbage entrance baffle.

17. A sweeper truck comprising a sweeper truck nozzle as claimed in any one of claims 1 to 16.