CN211596616U - Suction nozzle ground clearance adjusting device, sweeping machine - Google Patents
Suction nozzle ground clearance adjusting device, sweeping machine Download PDFInfo
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- CN211596616U CN211596616U CN202020091510.5U CN202020091510U CN211596616U CN 211596616 U CN211596616 U CN 211596616U CN 202020091510 U CN202020091510 U CN 202020091510U CN 211596616 U CN211596616 U CN 211596616U
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- ground clearance
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Abstract
The utility model discloses a suction nozzle terrain clearance adjusting device, sweeping machine, suction nozzle terrain clearance adjusting device includes: the device comprises a frame, an axle, a first connecting rod, a second connecting rod, a third connecting rod, a support rod, a sliding piece, a flexible cable and a suction nozzle; the top end of the first connecting rod and the top end of the second connecting rod are hinged to the frame, the bottom end of the first connecting rod and the bottom end of the second connecting rod are hinged to the supporting rod, and the first connecting rod and the second connecting rod are parallel and equal in length; the support rod is parallel to the frame, the sliding part is arranged on the support rod in a sliding manner along the length direction of the support rod, and two ends of the flexible cable are respectively fixedly connected with the sliding part and the suction nozzle; the two ends of the third connecting rod are respectively hinged on the axle and the first connecting rod. According to the suction nozzle ground clearance adjusting device, under the condition that suction nozzle traveling wheels are omitted, simultaneous deformation of the frame and wheels when the quality of the whole vehicle changes is ingeniously utilized, real-time self-adaptive adjustment of the suction nozzle ground clearance is achieved, reliability is improved, and hysteresis is reduced or even eliminated.
Description
Technical Field
The utility model relates to a road cleans technical field, and more specifically says, relates to a suction nozzle terrain clearance adjusting device, sweeping machine.
Background
The sweeper truck utilizes the negative pressure generated by the centrifugal fan to pick up the ground garbage through the suction nozzle with small ground clearance. The suction nozzle and the ground form an operation area for sucking and picking up garbage of the sweeping machine, a gap between the suction nozzle and the ground is an inlet for cleaning airflow, the size of the inlet directly determines the air volume of the whole pneumatic system, and the air volume has decisive influence on the working energy consumption of the centrifugal fan and the sweeping effect of the sweeping machine. Therefore, the height from the ground of the suction nozzle is one of the most critical parameters of the operation performance of the sweeping machine.
At present, a traveling wheel with a smaller diameter is adopted to install a suction nozzle, and the height of the suction nozzle above the ground is controlled by adjusting the height of the suction nozzle on the traveling wheel. Because the diameter of walking wheel is less, its rotational speed is higher during the operation, and along with time lapse, the walking wheel is worn and torn gradually, must change after using for a period. The replacement of the travelling wheels not only consumes time, but also increases the use cost; in addition, the traveling wheels have high rigidity and poor shock absorption, and generate high noise when traveling on rough road surfaces.
In order to overcome the defects, the suction nozzle is hung on the frame, the height of the suction nozzle is adjusted through the oil cylinder, the position sensor is arranged in front of the suction nozzle, signals are fed back to the electronic control unit through monitoring the position height of the frame and the ground in real time, the oil cylinder is controlled by the electronic control unit, and then the ground clearance of the suction nozzle is adjusted in real time. The design is complex, the position sensor is easy to be polluted and fail during operation, and the sensor needs long feedback time from the acquisition of height position signals to the controller to the execution of the oil cylinder, so that the adjustment of the height of the suction nozzle from the ground cannot be carried out in real time, and serious hysteresis exists.
In summary, the problem to be solved by those skilled in the art is how to adjust the height of the suction nozzle from the ground to reduce the hysteresis.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a suction nozzle terrain clearance adjusting device realizes the self-adaptation regulation of suction nozzle terrain clearance, reduces or even eliminates the hysteresis quality. Another object of the utility model is to provide a sweeping machine with above-mentioned suction nozzle terrain clearance adjusting device.
In order to achieve the above object, the present invention provides the following technical solutions:
a suction nozzle ground clearance adjusting device comprising: the device comprises a frame, an axle, a first connecting rod, a second connecting rod, a third connecting rod, a support rod, a sliding piece, a flexible cable and a suction nozzle;
the top end of the first connecting rod and the top end of the second connecting rod are hinged to the frame, the bottom end of the first connecting rod and the bottom end of the second connecting rod are hinged to the supporting rod, and the first connecting rod and the second connecting rod are parallel and equal in length;
the support rod is parallel to the frame, the sliding part is arranged on the support rod in a sliding manner along the length direction of the support rod, and two ends of the flexible cable are fixedly connected with the sliding part and the suction nozzle respectively;
and two ends of the third connecting rod are respectively hinged on the axle and the first connecting rod.
Preferably, the first link includes: the upper connecting rod section is positioned at the upper part of the central horizontal plane of the axle, and the lower connecting rod section is positioned at the lower part of the central horizontal plane of the axle;
the hinge point of the third connecting rod and the upper connecting rod section is positioned at the middle point of the upper connecting rod section, and L is2＝2L1+2L1K1/K2；
Wherein, K1Coefficient of elasticity of tire under rated tire pressure, K2Is the frame elastic coefficient, L1Is the length of the third link, L2The length of the upper connecting rod section is 2L1。
Preferably, the slider is located on a side of the second link remote from the first link.
Preferably, the sliding member is a pulley, and the flexible cable is a chain.
Preferably, the height adjusting device for the suction nozzle from the ground further comprises a driving device for driving the suction nozzle to ascend and descend.
Preferably, the suction nozzle ground clearance adjusting device further comprises: the suction nozzle comprises a first support fixed on the frame, a second support fixed at the top end of the suction nozzle, a fourth connecting rod with two ends respectively hinged to the first support and the second support, and a fifth connecting rod with two ends respectively hinged to the first support and the second support, wherein the first support, the fourth connecting rod, the fifth connecting rod and the second support form a parallelogram structure.
Based on the suction nozzle terrain clearance adjusting device that above-mentioned provided, the utility model also provides a sweeping machine, this sweeping machine include above-mentioned arbitrary suction nozzle terrain clearance adjusting device.
The utility model provides an among the suction nozzle terrain clearance adjusting device, branch is on a parallel with the frame, and first connecting rod and second connecting rod are parallel and isometric, then branch, frame, first connecting rod and second connecting rod have formed parallelogram structure, and articulate with axle articulated third connecting rod and first connecting rod, then utilize the simultaneous deformation of frame and wheel when whole car mass changes ingeniously, no matter how the terrain clearance of frame changes in the road sweeper operation process, realized that the terrain clearance of branch remains unchanged all the time; along with the movement of the supporting rod, the sliding piece moves along the length direction of the supporting rod; when the suction nozzle is put down, the flexible cable is straightened and always keeps the vertical direction, and the lower limiting mechanism of the suction nozzle formed by the flexible cable and the supporting rod realizes the lower limiting of the suction nozzle, so that the ground clearance of the suction nozzle is kept unchanged, namely, the ground clearance of the suction nozzle is always kept at the designed height, and the real-time self-adaptive adjustment of the ground clearance of the suction nozzle is realized.
The suction nozzle ground clearance adjusting device provided by the utility model realizes that the ground clearance of the suction nozzle is kept unchanged under the condition of canceling the suction nozzle traveling wheel, reduces wearing parts of the sweeping machine, reduces the later maintenance cost, and simultaneously eliminates the noise generated by the suction nozzle traveling wheel; meanwhile, the simultaneous deformation of the frame and the wheels when the quality of the whole vehicle changes is ingeniously utilized, the real-time self-adaptive adjustment of the ground clearance of the suction nozzle is realized, and compared with the mode of adopting a position sensor in the prior art, the method has the advantages that the reliability is improved, and the hysteresis is reduced or even eliminated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a suction nozzle ground clearance adjusting device according to an embodiment of the present invention;
fig. 2 is a geometric schematic diagram of a device for adjusting the height of the suction nozzle from the ground provided by the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, the embodiment of the present invention provides a suction nozzle ground clearance adjusting device, which includes: the device comprises a frame 1, an axle 11, a first connecting rod 3, a second connecting rod 4, a third connecting rod 12, a support rod 13, a sliding piece 5, a flexible cable 14 and a suction nozzle 16;
the top end of the first connecting rod 3 and the top end of the second connecting rod 4 are hinged to the frame 1, the bottom end of the first connecting rod 3 and the bottom end of the second connecting rod 4 are hinged to the supporting rod 13, and the first connecting rod 3 and the second connecting rod 4 are parallel and equal in length. It will be appreciated that the strut 13 is located on the underside of the frame 1.
The strut 13 is parallel to the frame 1, and the slider 5 is slidably disposed on the strut 13 along the length of the strut 13.
The two ends of the flexible cable 14 are fixedly connected with the sliding part 5 and the suction nozzle 16 respectively, namely one end of the flexible cable 14 is fixedly connected with the sliding part 5, and the other end of the flexible cable 14 is fixedly connected with the suction nozzle 16.
The two ends of the third link 12 are respectively hinged to the axle 11 and the first link 3, that is, one end of the third link 12 is hinged to the axle 11, and the other end of the third link 12 is hinged to the first link 3.
The specific structure of the hinge is selected according to actual needs, and this embodiment does not limit this. The tire 2 is mounted on the axle 11. The suction nozzle 16 is provided with a suction pipe 6 for leading the waste to the collecting structure.
In the suction nozzle ground clearance adjusting device provided by the embodiment of the utility model, the support rod 13 is parallel to the frame 1, and the first connecting rod 3 and the second connecting rod 4 are parallel and equal in length, then the support rod 13, the frame 1, the first connecting rod 3 and the second connecting rod 4 form a parallelogram structure, and the third connecting rod 12 hinged with the axle 11 is hinged with the first connecting rod 3, so that the frame 1 deforms with wheels when the quality of the whole vehicle changes ingeniously, and the ground clearance of the support rod 13 is kept unchanged all the time no matter how the ground clearance of the frame 1 changes in the operation process of the road sweeper; with the movement of the strut 13, the sliding member 5 moves along the length direction of the strut 13; when the suction nozzle 16 is put down, the flexible cable 14 is straightened and always keeps a vertical direction, and the lower limit mechanism of the suction nozzle 16 formed by the flexible cable 14 and the support rod 13 realizes the lower limit of the suction nozzle 16, so that the ground clearance of the suction nozzle 16 is kept unchanged, namely the ground clearance of the suction nozzle is always kept at a designed height, and the real-time self-adaptive adjustment of the ground clearance of the suction nozzle 16 is realized.
The embodiment of the utility model provides a suction nozzle ground clearance adjusting device, under the condition of the walking wheel of cancellation suction nozzle 16, realized that the ground clearance of suction nozzle 16 keeps unchanged, reduced the quick-wear part of sweeping machine, reduced the later maintenance cost, eliminated the noise that is produced by the walking wheel of suction nozzle 16 simultaneously; meanwhile, the simultaneous deformation of the frame 1 and the wheels when the quality of the whole vehicle changes is skillfully utilized, so that the real-time self-adaptive adjustment of the ground clearance of the suction nozzle 16 is realized.
In order to ensure that the strut 13 always moves in the vertical plane, the first link 3 is preferably selected to include: an upper connecting rod section and a lower connecting rod section, the upper connecting rod section is positioned at the upper part of the central horizontal plane of the axle 11, and the lower connecting rod section is positionedIn the lower part of the central horizontal plane of the axle 11; the hinge point of the third link 12 and the upper link segment is located at the midpoint of the upper link segment, and L2＝2L1+2L1K1/K2(ii) a Wherein, K1Coefficient of elasticity, K, of the tire 2 at rated tire pressure2Is the elastic coefficient, L, of the frame 11Is the length, L, of the third link 122The length of the upper link section is 2L for the length of the first link 31。
It will be understood that the central horizontal plane of the axle 11 refers to the horizontal plane in which the centre axis of the axle 11 is located. The central horizontal plane of the axle 11 divides the first link 3 into an upper link section and a lower link section.
As shown in fig. 2, when the load of the sweeping machine changes, the frame 1 is displaced in the vertical direction relative to the axle 11, and the ground clearance of the center horizontal plane of the axle 11 changes with the change of the load of the sweeping machine, that is, when the total mass of the sweeping machine changes, the ground clearance changes to △ M · K1At this time, the amount of change in height of the vehicle body frame 1 from the center horizontal plane of the axle 11 is △ M · K2Wherein △ M is the total mass change during the operation of the sweeping machine.
As can be derived from fig. 2, when the suction nozzle height adjustment device is moved to the position shown by the broken line H2＝△M·K2＝2L1(sinα-sinα’)，H1＝(L2-2L1)*(sinα-sinα’)。
In the formula, alpha is an included angle between the frame 1 and the first connecting rod 3 before the total mass of the sweeping machine changes; alpha' is the included angle between the frame 1 and the first connecting rod 3 after the total mass of the sweeping machine is changed. It will be appreciated that the angle between the frame 1 and the first link 3 is less than 90 deg. regardless of the change in the overall mass of the sweeper truck.
In order to keep the height of the supporting rod 13 from the ground constant, △ M.K must be satisfied1＝H1. Therefore, L can be derived2＝2L1+2L1K1/K2。
The above-mentioned slide 5 is arranged on the strut 13, the slide 5 being able to be positioned between the first link 3 and the second link 4, it being preferred that the slide 5 is positioned on the side of the second link 4 remote from the first link 3 in order to avoid interference of the slide 5 with the second link 4 and the first link 3.
Preferably, the slider 5 is a pulley, and the wire 14 is a chain. Of course, the slider 5 may be a slider, and the flexible cable 14 may be a cable or a rope, and is not limited to the above embodiment.
In order to realize the retraction and lowering of the suction nozzle 16, the above-mentioned suction nozzle ground clearance adjusting device further comprises a driving device 7 for driving the suction nozzle 16 to ascend and descend. The driving device 7 is a cylinder or a linear motor, which is not limited in this embodiment.
In order to facilitate the parallel keeping of the suction nozzle 16 and the vehicle frame 1, and to ensure the parallel keeping of the suction nozzle 16 and the ground, the above-mentioned suction nozzle ground clearance adjusting device is preferably further provided with: the suction nozzle comprises a first support 10 fixed on the frame 1, a second support 15 fixed at the top end of the suction nozzle 16, a fourth connecting rod 8 with two ends respectively hinged to the first support 10 and the second support 15, and a fifth connecting rod 9 with two ends respectively hinged to the first support 10 and the second support 15; wherein the first support 10, the fourth link 8, the fifth link 9 and the second support 15 form a parallelogram structure.
Wherein the fourth link 8 is located above the fifth link 9. To avoid mutual interference, the second abutment 15 is located on the side of the wire 14 remote from the second link 4.
Based on the suction nozzle ground clearance adjusting device that the above-mentioned embodiment provided, this embodiment also provides a sweeping machine, and this sweeping machine includes the suction nozzle ground clearance adjusting device that the above-mentioned embodiment said.
Because the suction nozzle ground clearance adjusting device has the technical effect, and the sweeping machine has the suction nozzle ground clearance adjusting device, the sweeping machine also has the corresponding technical effect, and the description is omitted.
The type of the sweeping machine is selected according to actual needs, and this embodiment does not limit this.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A suction nozzle ground clearance adjusting device, comprising: the device comprises a frame (1), an axle (11), a first connecting rod (3), a second connecting rod (4), a third connecting rod (12), a support rod (13), a sliding part (5), a flexible cable (14) and a suction nozzle (16);
the top end of the first connecting rod (3) and the top end of the second connecting rod (4) are hinged to the frame (1), the bottom end of the first connecting rod (3) and the bottom end of the second connecting rod (4) are hinged to the supporting rod (13), and the first connecting rod (3) and the second connecting rod (4) are parallel and equal in length;
the supporting rod (13) is parallel to the frame (1), the sliding part (5) is slidably arranged on the supporting rod (13) along the length direction of the supporting rod (13), and two ends of the flexible cable (14) are fixedly connected with the sliding part (5) and the suction nozzle (16) respectively;
and two ends of the third connecting rod (12) are respectively hinged on the axle (11) and the first connecting rod (3).
2. A nozzle ground clearance adjustment device according to claim 1, characterized in that the first link (3) comprises: an upper link section and a lower link section, the upper link section being located above the central horizontal plane of the axle (11), the lower link section being located below the central horizontal plane of the axle (11);
the hinge point of the third connecting rod (12) and the upper connecting rod section is positioned at the middle point of the upper connecting rod section, and L is2＝2L1+2L1K1/K2；
Wherein, K1Is the elastic coefficient, K, of the tire (2) at the rated tire pressure2Is the elastic coefficient, L, of the frame (1)1Is a stand forLength, L, of the third link (12)2The length of the upper connecting rod section is 2L and is the length of the first connecting rod (3)1。
3. A nozzle ground clearance adjustment device according to claim 1, characterized in that the slider (5) is located on the side of the second link (4) remote from the first link (3).
4. A nozzle ground clearance adjustment device according to claim 1, characterized in that the sliding member (5) is a pulley and the flexible cable (14) is a chain.
5. A suction nozzle ground clearance adjusting apparatus according to claim 1, further comprising a driving means (7) for driving the suction nozzle (16) to ascend and descend.
6. A suction nozzle ground clearance adjusting apparatus according to any one of claims 1 to 5, further comprising: the device comprises a first support (10) fixed on the frame (1), a second support (15) fixed at the top end of the suction nozzle (16), a fourth connecting rod (8) with two ends respectively hinged to the first support (10) and the second support (15), and a fifth connecting rod (9) with two ends respectively hinged to the first support (10) and the second support (15);
wherein the first support (10), the fourth link (8), the fifth link (9) and the second support (15) form a parallelogram structure.
7. A sweeping vehicle comprising a suction nozzle ground clearance adjustment apparatus according to any one of claims 1 to 6.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020091510.5U CN211596616U (en) | 2020-01-15 | 2020-01-15 | Suction nozzle ground clearance adjusting device, sweeping machine |
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| CN202020091510.5U CN211596616U (en) | 2020-01-15 | 2020-01-15 | Suction nozzle ground clearance adjusting device, sweeping machine |
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| CN211596616U true CN211596616U (en) | 2020-09-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114145090A (en) * | 2021-11-30 | 2022-03-08 | 盐城唯道农业机械有限公司 | Large-amplitude field flattening mechanical device and using method thereof |
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2020
- 2020-01-15 CN CN202020091510.5U patent/CN211596616U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114145090A (en) * | 2021-11-30 | 2022-03-08 | 盐城唯道农业机械有限公司 | Large-amplitude field flattening mechanical device and using method thereof |
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