Suction sweeper motor rotating speed hydraulic control system and suction sweeper

Abstract

The utility model discloses a motor rotating speed hydraulic control system of a suction sweeper, which relates to the technical field of suction sweepers and comprises an oil tank, an oil pump, an oil outlet pipe, a hydraulic motor group and a plurality of first electromagnetic directional valves. Main oil return ports of the first electromagnetic directional valves are communicated with the oil tank through the same oil return pipe; the hydraulic motor set is connected with one of the first electromagnetic reversing valves and comprises a plurality of hydraulic motors connected in series or in parallel. A plurality of first electromagnetic directional valves used for controlling hydraulic executive components are connected in parallel in one oil way system, so that the hydraulic executive components can work through the same oil way system, and the complexity and the control difficulty of the hydraulic system are effectively reduced; and a plurality of hydraulic motors are connected in series or in parallel to one of the first electromagnetic directional valves, so that the rotating speed control of the plurality of hydraulic motors can be suitable for different working conditions of the suction sweeper.

Description

TECHNICAL FIELD

[0001] The utility model relates to a suction sweeper technology field especially relates to a suction sweeper motor rotating speed hydraulic control system and suction sweeper. BACKGROUND

[0002] Suction sweeper is one of the key equipment of city environment cleaning, is widely used in municipal road etc. place ground cleaning operation. One of the key components of suction sweeper is its sweep disc system, and sweep disc is usually driven by hydraulic motor, since suction sweeper usually has multiple sweep discs, so multiple hydraulic motors are usually needed to drive respectively, since the working condition of suction sweeper has higher requirement to the rotating speed and torque output of hydraulic motor, and the complexity of speed regulation demand usually faces more technical problems. SUMMARY

[0003] In order to solve the above technical problems, the utility model provides a suction sweeper motor rotating speed hydraulic control system and suction sweeper, and the specific technical scheme is:

[0004] A suction sweeper motor rotating speed hydraulic control system, comprising an oil tank, an oil pump and an oil outlet pipe, the oil pump is connected to the oil outlet of the oil tank, the oil outlet pipe is connected to the oil pump, further comprising:

[0005] A plurality of first electromagnetic reversing valves are used for connecting hydraulic executing elements, the main oil inlet of the first electromagnetic reversing valve is communicated with the oil outlet pipe, and the main oil return port of the first electromagnetic reversing valve is communicated with the oil tank through the same oil return pipe.

[0006] A hydraulic motor group is connected to one of the first electromagnetic reversing valves, and the hydraulic motor group comprises a plurality of series or parallel hydraulic motors.

[0007] Preferably, the number of hydraulic motors is four.

[0008] Preferably, the first electromagnetic reversing valve connected with the hydraulic motor group is provided with an oil inlet interface, a series oil way interface and a parallel oil way interface.

[0009] The hydraulic motor group further comprises a second electromagnetic reversing valve and a motor rotating speed adjusting valve, the second electromagnetic reversing valve and the motor rotating speed adjusting valve are arranged in pairs with the hydraulic motor, the second electromagnetic reversing valve is provided with a series oil inlet port, a series oil outlet port, a parallel oil inlet port and a parallel oil outlet port.

[0010] The series oil inlet of the first second electromagnetic reversing valve is connected with the series oil road interface, the series oil inlets of the rest second electromagnetic reversing valves are connected with the oil outlets of the previous hydraulic motors, the series oil outlets of all the second electromagnetic reversing valves are connected with the oil inlets of the next hydraulic motor, the parallel oil outlet of the first second electromagnetic reversing valve is closed, the parallel oil outlets of the rest second electromagnetic reversing valves and the oil outlet of the last hydraulic motor are connected with the oil tank through the same oil return pipeline, the parallel oil inlets of all the second electromagnetic reversing valves are connected with the oil outlet of the motor speed regulating valve, and the oil inlets of the motor speed regulating valve are connected with the parallel oil road interface through the same oil inlet pipeline.

[0011] Preferably,

[0012] When the oil inlet interface and the series oil road interface are connected, the parallel oil road interface is closed, the series oil inlets and the series oil outlets are connected, and the plurality of hydraulic motors are connected in series.

[0013] When the oil inlet interface and the parallel oil road interface are connected, the series oil road interface is closed, the series oil inlets and the parallel oil outlets are connected, the parallel oil inlets and the series oil outlets are connected, and the plurality of hydraulic motors are connected in parallel.

[0014] Preferably, the motor speed regulating valve is a load-sensitive valve, a pressure control valve, a flow control valve or a proportional valve.

[0015] Preferably, a one-way valve is arranged between the parallel oil outlet and the oil return pipeline.

[0016] Preferably, a road surface detection sensor and a main control chip are further arranged, the road surface detection sensor is electrically connected with the main control chip, and the main control chip is connected with the first electromagnetic reversing valve and the second electromagnetic reversing valve.

[0017] The utility model also provides a kind of suction sweeper, including suction sweeper main body, sweep disc and the suction sweeper motor speed hydraulic control system of any one described above, the hydraulic motor is equipped on the suction sweeper main body, and the output end of the hydraulic motor is connected with the sweep disc.

[0018] The suction sweeper motor speed hydraulic control system provided by the utility model connects multiple first electromagnetic reversing valves for controlling hydraulic executing element in parallel in an oil road system, so that multiple hydraulic executing elements can work through the same oil road system, effectively reducing the complexity and control difficulty of hydraulic system, and connects multiple hydraulic motors in series or parallel on one first electromagnetic reversing valve, so that the speed control of multiple hydraulic motors can be adapted to different working conditions of suction sweeper. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are only some embodiments in the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the premise of the drawings.

[0020] Figure 1 The oil circuit schematic diagram of the motor speed hydraulic control system of the sweeper is provided for the embodiment of the present application.

[0021] Figure 2 The oil circuit schematic diagram of the hydraulic motor group is provided for the embodiment 1 of the embodiment of the present application.

[0022] Figure 3 The oil circuit schematic diagram of the hydraulic motor group is provided for the embodiment 2 of the embodiment of the present application.

[0023] Figure 4 The connection structure block diagram of the road surface detection sensor, the main control chip and the electromagnetic reversing valve is provided for the embodiment of the present application.

[0024] Figure 5 The structural schematic diagram of the sweeper is provided for the embodiment of the present application.

[0025] Reference signs

[0026] 100-sweeper main body; 200-sweeping disc;

[0027] 10-oil tank; 20-oil pump; 30-oil outlet pipe;

[0028] 1-first electromagnetic reversing valve; 11-oil inlet interface; 12-series oil circuit interface; 13-parallel oil circuit interface;

[0029] 2-hydraulic motor group; 21-hydraulic motor; 22-second electromagnetic reversing valve; 221-series oil inlet; 222-series oil outlet; 223-parallel oil inlet; 224-parallel oil outlet; 23-motor speed adjusting valve; 24-check valve;

[0030] 3-road surface detection sensor;

[0031] 4-main control chip. DETAILED DESCRIPTION

[0032] In order to make those skilled in the art better understand the technical scheme of the present application, the present application will be described in detail below in combination with the drawings, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application.

[0033] It should be noted that like reference numerals refer to like elements throughout the several views of the drawings, and that, unless otherwise specifically indicated, where a singular form of a word is used herein, that word connotes both the singular and plural forms of the word.

[0034] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, indicate relative or positional relationships, which are based on the orientation or position shown in the drawings, or the orientation or position in which the utility model product is usually placed during use, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0035] In addition, the terms "horizontal", "vertical", "overhanging", and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0036] In the description of the utility model, it should also be noted that, unless otherwise specifically defined and limited, the terms "provided", "installed", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0037] Please refer to Figures 1 to 4 The embodiment provides a kind of suction sweeper motor speed hydraulic control system, including oil tank 10, oil pump 20 and oil outlet pipe 30, oil pump 20 connects the oil outlet of oil tank 10, oil outlet pipe 30 is connected to oil pump 20, still include first electromagnetic reversing valve 1 and hydraulic motor group 2.

[0038] The number of first electromagnetic reversing valve 1 is multiple, for connecting hydraulic actuator, the main oil inlet of first electromagnetic reversing valve 1 is all communicated with oil outlet pipe 30, the main oil return port of first electromagnetic reversing valve 1 is all communicated with oil tank 10 by same oil return pipe.

[0039] Hydraulic motor group 2 is connected to one of first electromagnetic reversing valve 1, and the hydraulic motor group 2 includes a plurality of series or parallel hydraulic motors 21.

[0040] The first electromagnetic directional valve 1 is connected in parallel in the hydraulic circuit system, allowing multiple hydraulic actuators to operate through the same hydraulic circuit, effectively reducing the complexity and control difficulty of the hydraulic system; please refer to Figure 2 This is a schematic diagram of the oil circuit of the hydraulic motor assembly 2 provided in Embodiment 1 of this invention. Each hydraulic motor 21 in the hydraulic motor assembly 2 is connected in series in the oil circuit system so that each hydraulic motor 21 can maintain the same speed, which is suitable for synchronous control of multiple working areas. Multiple hydraulic motors 21 can also be connected in parallel in the oil circuit system, so that the speed of each hydraulic motor 21 can be adjusted individually when multiple hydraulic motors 21 are working synchronously, thereby achieving more precise control.

[0041] The hydraulic control system for the sweeper motor speed provided in this embodiment connects multiple first electromagnetic directional valves 1 used to control hydraulic actuators in parallel in one oil circuit system, so that multiple hydraulic actuators can work through the same oil circuit system, effectively reducing the complexity and control difficulty of the hydraulic system; and by connecting multiple hydraulic motors 21 in series or in parallel to one of the first electromagnetic directional valves 1, the speed control of multiple hydraulic motors 21 can be adapted to different working conditions of the sweeper.

[0042] Furthermore, the number of hydraulic motors 21 is four.

[0043] Further, please see Figure 3 In Embodiment 2 provided in this embodiment, the first electromagnetic directional valve 1 connected to the hydraulic motor assembly 2 is provided with an oil inlet port 11, a series oil circuit port 12 and a parallel oil circuit port 13.

[0044] The hydraulic motor assembly 2 also includes a second solenoid directional valve 22 and a motor speed regulating valve 23. The second solenoid directional valve 22 and the motor speed regulating valve 23 are arranged in pairs with the hydraulic motor 21. The second solenoid directional valve 22 is provided with a series oil inlet 221, a series oil outlet 222, a parallel oil inlet 223 and a parallel oil outlet 224.

[0045] In this configuration, the series inlet 221 of the first second electromagnetic directional valve 22 is connected to the series oil circuit interface 12, the series inlet 221 of the remaining second electromagnetic directional valves 22 is connected to the outlet of the previous hydraulic motor 21, the series outlet 222 of all second electromagnetic directional valves 22 is connected to the inlet of the next hydraulic motor 21, the parallel outlet 224 of the first second electromagnetic directional valve 22 is closed, the parallel outlet 224 of the remaining second electromagnetic directional valves 22 and the outlet of the last hydraulic motor 21 are all connected to the oil tank 10 through the same return oil pipeline, the parallel inlet 223 of all second electromagnetic directional valves 22 is connected to the outlet of the motor speed regulating valve 23, and the inlet of the motor speed regulating valve 23 is connected to the parallel oil circuit interface 13 through the same inlet oil pipeline.

[0046] Specifically, the number of hydraulic motors 21, second electromagnetic reversing valves 22 and motor speed regulating valves 23 can each be four, and the three are combined in pairs into four groups of series / parallel switching modules, each group of series / parallel switching modules including one hydraulic motor 21, one second electromagnetic reversing valve 22 and one motor speed regulating valve 23, and the four groups of series / parallel switching modules are connected in series at the head and tail, and the series connection and parallel connection of the four hydraulic motors 21 can be controlled at the same time when the first electromagnetic reversing valve 1 and the second electromagnetic reversing valve 22 are controlled.

[0047] Further,

[0048] When the oil inlet interface 11 and the series oil way interface 12 are connected, the parallel oil way interface 13 is closed, the series oil inlet 221 and the series oil outlet 222 are connected, and the plurality of hydraulic motors 21 are connected in series.

[0049] When the oil inlet interface 11 and the parallel oil way interface 13 are connected, the series oil way interface 12 is closed, the series oil inlet 221 and the parallel oil outlet 224 are connected, and the parallel oil inlet 223 and the series oil outlet 222 are connected, and the plurality of hydraulic motors 21 are connected in parallel.

[0050] Specifically, the first electromagnetic reversing valve 1 and the second electromagnetic reversing valve 22 can be controlled by the central control console of the sweeper, so as to realize the series connection and parallel connection of the plurality of hydraulic motors 21, thereby adapting to different working conditions of the sweeper. For example, when the road surface is flat, the first electromagnetic reversing valve 1 can be controlled to connect the oil inlet interface 11 and the series oil way interface 12, and the second electromagnetic reversing valve 22 can be controlled to connect the series oil inlet 221 and the series oil outlet 222, so as to connect the plurality of hydraulic motors 21 in series and keep the same speed of the plurality of hydraulic motors 21; when the road surface is uneven, the first electromagnetic reversing valve 1 can be controlled to connect the oil inlet interface 11 and the parallel oil way interface 13, and the second electromagnetic reversing valve 22 can be controlled to connect the series oil inlet 221 and the parallel oil outlet 224, and connect the parallel oil inlet 223 and the series oil outlet 222, so as to connect the plurality of hydraulic motors 21 in parallel, thereby realizing precise control of the speed of each hydraulic motor 21.

[0051] Further, the motor speed regulating valve 23 is a load-sensitive valve, a pressure control valve, a flow control valve or a proportional valve, so that when the plurality of hydraulic motors 21 are connected in parallel, when the load of a single hydraulic motor 21 increases, i.e. when a hard object is encountered, the motor speed regulating valve 23 can reduce the flow of hydraulic oil to automatically reduce the speed of the hydraulic motor 21, and when the hard object is left, the flow of hydraulic oil is increased to automatically restore the speed of the hydraulic motor 21, thereby realizing automatic control of the speed of the single hydraulic motor 21.

[0052] Further, a one-way valve 24 is arranged between the parallel oil outlet 224 and the oil return pipeline.

[0053] Further, the road surface detection sensor 3 and the master control chip 4 are further included, the road surface detection sensor 3 is electrically connected to the master control chip 4, and the master control chip 4 is connected to the first electromagnetic reversing valve 1 and the second electromagnetic reversing valve 22.

[0054] The road surface detection sensor 3 can be a laser radar, an ultrasonic sensor or an image recognition sensor, so as to monitor the road surface state below the sweeper in real time, and the first electromagnetic reversing valve 1 and the second electromagnetic reversing valve 22 are controlled by the master control chip 4 to adjust the series connection or the parallel connection of the plurality of hydraulic motors 21, so that the sweeper truck can automatically adjust the appropriate connection mode of the hydraulic motor 21 according to the road surface condition in real time.

[0055] Please refer to Figure 5 The embodiment further provides a sweeper truck, which comprises a sweeper truck body 100, a sweeping disc 200 and the sweeper truck motor rotating speed hydraulic control system according to any one of the above, the sweeper truck body 100 is provided with the hydraulic motor 21, and the output end of the hydraulic motor 21 is connected to the sweeping disc 200.

[0056] Principle description:

[0057] The first electromagnetic reversing valve 1 is connected in parallel in the oil circuit system, so that the plurality of hydraulic actuators can work through the same oil circuit system, and the complexity and control difficulty of the hydraulic system are effectively reduced; please refer to Figure 2 The oil circuit diagram of the hydraulic motor group 2 provided in the embodiment 1 is shown, each hydraulic motor 21 in the hydraulic motor group 2 is connected in series in the oil circuit system, so that each hydraulic motor 21 can maintain the same rotating speed, which is suitable for occasions of synchronous control of multiple working areas, and the plurality of hydraulic motors 21 can also be connected in parallel in the oil circuit system, so that the rotating speed of the hydraulic motor 21 can be adjusted individually when the plurality of hydraulic motors 21 work synchronously, thereby realizing more precise control.

[0058] It should be noted that, in this document, the terms “comprising”, “including” or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or apparatus.

[0059] The principle and implementation mode of the present application are described by using specific examples herein, and the above example is only used for helping to understand the method and core idea of the present application. The above is only the preferred implementation mode of the present application, and it should be pointed out that, due to the limited nature of the expression, there are objectively infinite specific structures, and for ordinary skilled persons in the technical field, without departing from the principle of the present application, some improvements, refinements or changes can be made, and the above technical features can be combined in an appropriate manner; the improvements, refinements, changes or combinations, or the direct application of the concept and technical solution of the present application to other occasions without improvement, should be regarded as the protection scope of the present application.

Claims

1. A motor speed hydraulic control system for a sweeper- scrubber, characterized by, It comprises an oil tank (10), an oil pump (20) connected to the oil outlet of the oil tank (10), and an oil outlet pipe (30) connected to the oil pump (20), and further comprises: A plurality of first electromagnetic reversing valves (1) are used to connect hydraulic actuators, the main oil inlet of each first electromagnetic reversing valve (1) is communicated with the oil outlet pipe (30), and the main oil return port of each first electromagnetic reversing valve (1) is communicated with the oil tank (10) through the same oil return pipe; A hydraulic motor group (2) is connected to one of the first electromagnetic reversing valves (1), and the hydraulic motor group (2) comprises a plurality of hydraulic motors (21) connected in series or parallel.

2. The motor speed hydraulic control system for a sweeper machine of claim 1, wherein, The number of hydraulic motors (21) is four.

3. The motor speed hydraulic control system for a sweeper machine of claim 1, wherein, The first electromagnetic reversing valve (1) connected to the hydraulic motor group (2) is provided with an oil inlet interface (11), a series oil path interface (12) and a parallel oil path interface (13); The hydraulic motor group (2) further comprises a second electromagnetic reversing valve (22) and a motor speed regulating valve (23), the second electromagnetic reversing valve (22) and the motor speed regulating valve (23) are arranged in pairs with the hydraulic motor (21), and the second electromagnetic reversing valve (22) is provided with a series oil inlet (221), a series oil outlet (222), a parallel oil inlet (223) and a parallel oil outlet (224); Among them, the series oil inlet (221) of the first second electromagnetic reversing valve (22) is connected to the series oil path interface (12), the series oil inlets (221) of the remaining second electromagnetic reversing valves (22) are connected to the oil outlets of the previous hydraulic motors (21), the series oil outlets (222) of all second electromagnetic reversing valves (22) are connected to the oil inlets of the next hydraulic motors (21), the parallel oil outlet (224) of the first second electromagnetic reversing valve (22) is closed, the parallel oil outlets (224) of the remaining second electromagnetic reversing valves (22) and the oil outlet of the last hydraulic motor (21) are communicated with the oil tank (10) through the same oil return pipe, the parallel oil inlets (223) of all second electromagnetic reversing valves (22) are connected to the oil outlets of the motor speed regulating valve (23), and the oil inlets of the motor speed regulating valve (23) are communicated with the parallel oil path interface (13) through the same oil inlet pipe.

4. The motor speed hydraulic control system of the sweeper according to claim 3, characterized in that: When the oil inlet interface (11) and the series oil path interface (12) are communicated, the parallel oil path interface (13) is closed, the series oil inlet (221) and the series oil outlet (222) are communicated, and a plurality of hydraulic motors (21) are connected in series; When the oil inlet interface (11) and the parallel oil path interface (13) are communicated, the series oil path interface (12) is closed, the series oil inlet (221) and the parallel oil outlet (224) are communicated, the parallel oil inlet (223) and the series oil outlet (222) are communicated, and a plurality of hydraulic motors (21) are connected in parallel.

5. The motor speed hydraulic control system for a sweeper machine of claim 3, wherein, The motor speed regulating valve (23) is a load-sensitive valve, a pressure control valve, a flow control valve or a proportional valve.

6. The motor speed hydraulic control system for a sweeper machine of claim 3, wherein, A one-way valve (24) is arranged between the parallel oil outlet (224) and the oil return pipeline.

7. The motor speed hydraulic control system for a sweeper machine of claim 4, wherein, The road surface detection sensor (3) is electrically connected to the main control chip (4), and the main control chip (4) is connected to the first electromagnetic reversing valve (1) and the second electromagnetic reversing valve (22).

8. A suction sweeper characterised in that, The road surface detection sensor (3) is electrically connected to the main control chip (4), and the main control chip (4) is connected to the first electromagnetic reversing valve (1) and the second electromagnetic reversing valve (22). The road surface detection sensor (3) is electrically connected to the main control chip (4), and the main control chip (4) is connected to the first electromagnetic reversing valve (1) and the second electromagnetic reversing valve (22).

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