A sweeper side brush control hydraulic system and a sweeper

Abstract

The utility model discloses a kind of sweeper side brush control hydraulic systems, control valve group P port connects oil source, T port returns oil;Control valve group A port connects rolling brush motor oil inlet, and rolling brush motor oil outlet connects switching valve oil inlet, and switching valve first oil outlet connects control valve group B oil port, and switching valve second oil outlet connects overflow throttle valve oil inlet, and overflow throttle valve first oil outlet connects side brush motor oil inlet, and side brush motor oil outlet, overflow throttle valve second oil outlet are connected and with control valve group B port are connected;Control valve group A1 port, B1 port are connected with oil cylinder large cavity and small cavity respectively.Sweeper can control side brush motor whether work by switching valve, and according to need side brush motor work when driving the side brush of sweeper works.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and in particular to a hydraulic system for controlling the side brush of a sweeper and a sweeper. Background Technology

[0002] A sweeper is an engineering machinery attachment widely used in docks, power plants, municipal works and other places for sweeping, collecting and transporting spilled dust, particles, debris, slag and other materials.

[0003] Existing cleaning devices are not effective at cleaning materials on edges, corners, and crevices, resulting in poor cleaning performance. Summary of the Invention

[0004] Purpose of the utility model: In order to overcome the shortcomings of the prior art, the first purpose of this utility model is to provide a hydraulic system for controlling the side brush of a sweeper; The second objective is to provide a sweeper based on the aforementioned sweeper side brush control hydraulic system, which can control whether the side brush is working through a switching valve. When the side brush is working, the sweeper can effectively clean materials on edges, corners, crevices, etc., with good cleaning effect and high efficiency.

[0005] Technical solution: The sweeper side brush control hydraulic system provided by this utility model includes a control valve group, a roller brush motor, a side brush motor, an overflow throttle valve, a switching valve, and a hydraulic cylinder; The control valve group has port P connected to the oil source and port T for oil return; port A of the control valve group is connected to the oil inlet of the roller brush motor, the oil outlet of the roller brush motor is connected to the oil inlet of the switching valve, the first oil outlet of the switching valve is connected to port B of the control valve group, the second oil outlet of the switching valve is connected to the oil inlet of the overflow throttle valve, the first oil outlet of the overflow throttle valve is connected to the oil inlet of the side brush motor, the oil outlet of the side brush motor and the second oil outlet of the overflow throttle valve are connected together and connected to port B of the control valve group; ports A1 and B1 of the control valve group are connected to the large chamber and small chamber of the oil cylinder, respectively.

[0006] Furthermore, the control valve assembly includes: a cartridge valve, a throttle valve, and a directional valve; the inlet of the cartridge valve, the inlet of the throttle valve, and the B port of the control valve assembly are connected; the outlet of the cartridge valve is connected to the T port of the control valve assembly; the outlet of the throttle valve, the control port of the cartridge valve, and the inlet of the directional valve are connected; the first and second outlets of the directional valve are respectively connected to the A1 and B1 ports of the control valve, and the return port of the directional valve is connected to the T port of the control valve assembly; the P port and A port of the control valve assembly are connected.

[0007] Furthermore, the control valve assembly also includes: relief valve one, relief valve two, check valve two, and check valve three; the oil inlet of relief valve one is connected to port A of the control valve assembly; the oil outlet of relief valve one is connected to port T of the control valve assembly; the oil inlet of relief valve two is connected to the oil inlet of the reversing valve, and the oil outlet of relief valve two is connected to the oil outlet of the control valve assembly; the oil inlet of check valve two is connected to port B of the control valve assembly, and the oil outlet of check valve two is connected to port A of the control valve assembly; the oil inlet of check valve three is connected to port T of the control valve assembly, and the oil outlet of check valve three is connected to port P of the control valve assembly.

[0008] Furthermore, when the reversing valve is in the neutral position, the oil inlet and the oil return port are connected.

[0009] Furthermore, the hydraulic system also includes: a check valve; the oil inlet of the check valve is connected to the oil outlet of the side brush motor and the second oil outlet of the overflow throttle valve; the oil outlet of the check valve is connected to the first oil outlet of the switching valve and the B port of the control valve group.

[0010] Furthermore, the hydraulic system also includes: a leakage port pipeline for the roller brush motor; one end of the leakage port pipeline is connected to the leakage port of the roller brush motor, and the other end is connected back to the oil tank.

[0011] A sweeper includes the aforementioned sweeper side brush control hydraulic system, wherein the sweeper is equipped with a side brush device connected to and driven by a side brush motor.

[0012] Beneficial effects: Compared with the prior art, the advantages of this utility model are: the side brush motor can be controlled to work by switching valve. When the side brush motor works as needed, it drives the side brush of the sweeper to work. The side brush can clean the material on the edges, corners and gaps, with good cleaning effect and high cleaning efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the hydraulic system of this utility model; Figure 2 This is a schematic diagram of the control valve assembly of this utility model; Figure 3 This is a schematic diagram of the overflow throttle valve of this utility model; Figure 4 This is a schematic diagram of the appearance of this utility model. Detailed Implementation

[0014] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0015] like Figure 4 The sweeper shown has a built-in side brush control hydraulic system. The sweeper is equipped with a side brush device, which is connected to and driven by the side brush motor 3. Side brush control hydraulic system such as Figures 1-3As shown, the system includes: a control valve assembly 1, a roller brush motor 2, a side brush motor 3, an overflow throttle valve 4, a switching valve 5, and a hydraulic cylinder 6. The P port of the control valve assembly 1 is connected to the oil source, the T port to the return oil, and the A port to the oil inlet of the roller brush motor 2. The oil outlet of the roller brush motor 2 is connected to the oil inlet of the switching valve 5. The first oil outlet of the switching valve 5 is connected to the B port of the control valve assembly 1, and the second oil outlet of the switching valve 5 is connected to the oil inlet of the overflow throttle valve 4. The first oil outlet of the overflow throttle valve 4 is connected to the oil inlet of the side brush motor 3, and the second oil outlet of the overflow throttle valve 4 and the oil outlet of the side brush motor 3 are connected together and connected to the B port of the control valve assembly 1. The A1 and B1 ports of the control valve assembly 1 are respectively connected to the large and small chambers of the hydraulic cylinder 6.

[0016] The system also includes: a one-way valve 7 and a leakage port pipeline 8 for the roller brush motor 2. The inlet of the one-way valve 7 is connected to the second outlet of the overflow throttle valve 4 and the outlet of the side brush motor 3. The outlet of the one-way valve 7 is connected to the first outlet of the switching valve 5 and the B port of the control valve group 1. One end of the leakage port pipeline 8 for the roller brush motor 2 is connected to the leakage port of the roller brush motor 2, and the other end is connected to the oil tank.

[0017] The control valve assembly 1 includes: a cartridge valve 11, a throttle valve 12, and a directional valve 13. The P port and A port of the control valve assembly 1 are connected; the B port of the control valve assembly 1 is connected to the oil inlet of the cartridge valve 11 and the oil inlet of the throttle valve 12; the oil outlet of the cartridge valve 11 is connected to the oil port of the control valve assembly 1; the control oil port of the cartridge valve 11, the oil outlet of the throttle valve 12, and the oil inlet of the directional valve 13 are connected; the first oil outlet and the second oil outlet of the directional valve 13 are respectively connected to the A1 and B1 ports of the control valve assembly 1; and the return oil port of the directional valve 13 is connected to the oil port of the control valve assembly 1.

[0018] The control valve assembly 1 also includes: relief valve 14, relief valve 2 15, check valve 2 16, and check valve 3 17. The inlet of relief valve 14 is connected to the oil port of control valve assembly 1A; the outlet of relief valve 14 is connected to the oil port of control valve assembly 1T; the inlet of relief valve 2 15 is connected to the inlet of directional valve 13, and the outlet of relief valve 2 15 is connected to the oil port of control valve assembly 1T; the inlet of check valve 2 16 is connected to the oil port of control valve assembly 1B, and the outlet of check valve 2 16 is connected to the oil port of control valve assembly 1A; the inlet of check valve 3 17 is connected to the oil port of control valve assembly 1T, and the outlet of check valve 3 17 is connected to the oil port of control valve assembly 1P.

[0019] When the sweeper is working, the hydraulic oil source enters the control valve group through the control valve 1P port, and then enters the oil inlet of the roller brush motor 2 through the control valve group 1A port. The hydraulic oil drives the roller brush motor 2 to rotate, and the roller brush motor 2 drives the roller brush to rotate to perform the sweeping operation.

[0020] Hydraulic oil from the outlet of the roller brush motor 2 enters the inlet of the switching valve 5.

[0021] When the sweeper does not need to clean materials on edges, corners, crevices, etc., the side brush does not work, the side brush motor 3 does not need to rotate, the switching valve 5 moves to the lower position, and the hydraulic oil flows into the control valve group 1B port through the first oil outlet of the switching valve 5.

[0022] One-way valve 7 prevents hydraulic oil from flowing in the opposite direction to the side brush motor 3 and the second oil outlet of the overflow throttle valve 4.

[0023] When the sweeper needs to clean materials on edges, corners, and crevices, the side brush operates, and the side brush motor 3 needs to rotate. The switching valve 5 moves to the upper position, and hydraulic oil flows into the inlet of the overflow throttle valve 4 through the second outlet of the switching valve 5. Because the hydraulic oil flow rate required by the side brush motor 3 is less than that required by the roller brush motor 2, the hydraulic oil is divided into two paths after passing through the overflow throttle valve 4: one path flows out through the second outlet of the overflow throttle valve 4, and the other path flows out through the first outlet of the overflow throttle valve 4 and enters the inlet of the side brush motor 3. Furthermore, because the pressure difference across the throttle valve 41 is equal to that of the overflow valve... 42 controls the pressure of the spring. The pressure of the spring is a constant value, so the hydraulic oil flowing into the side brush motor 3 through the first outlet of the overflow throttle valve 41 is constant. The flow rate of the hydraulic oil through the first outlet of the overflow throttle valve 4 is adjusted according to the needs of the side brush motor 3. The remaining hydraulic oil flowing in through the inlet of the overflow throttle valve 4 flows out through the second outlet of the overflow throttle valve 42. The hydraulic oil at the second outlet of the overflow throttle valve 4 merges with the hydraulic oil at the outlet of the side brush motor 3 and flows into the oil port of the control valve group 1B.

[0024] Hydraulic oil enters control valve group 1 through port 1B and is divided into two paths: one path returns through the inlet and outlet of cartridge valve 11 and port 1T of control valve group 1; the other path enters the inlet of directional valve 13 through the inlet and outlet of throttle valve 12. Because the pressure difference across throttle valve 12 is the pressure generated by the spring at the control end of cartridge valve 11 and is a constant value, the flow rate through throttle valve 12 is constant. When directional valve 13 is in the neutral position, hydraulic oil returns through the inlet and outlet of directional valve 13 and port 1T of control valve group 1. When directional valve 13 is in the left position, hydraulic oil enters the large chamber of cylinder 6 through the first outlet of directional valve 13, and cylinder 6 extends. When directional valve 13 is in the right position, hydraulic oil enters the small chamber of cylinder 6 through the second outlet of directional valve 13, and cylinder 6 retracts. The reversing valve 13 controls the extension and retraction of the hydraulic cylinder 6, thereby controlling the opening and closing of the cleaning hopper. The hopper opens to unload material, and closes to clean and collect material.

[0025] When the pressure at the inlet of the roller brush motor 2 exceeds the set value of the relief valve 14, the relief valve 14 overflows, and the hydraulic oil returns through the outlet of the relief valve 14 and the port of the control valve 1T. When the pressure in the cylinder 6 exceeds the set value of the relief valve 2 15, the relief valve 2 15 overflows, and the hydraulic oil at the outlet of the throttle valve 12 returns through the outlet of the relief valve 2 15 and the port of the control valve group 1T. When the hydraulic oil supply stops, the check valve 2 16 and the roller brush motor 2 form a closed loop, and the hydraulic oil circulates within the closed loop, which can prevent pipeline rupture and motor damage. When the hydraulic oil supply is reversed, the hydraulic oil returns through the port of the control valve group 1T, the inlet and outlet of the check valve 3 17, and the port of the control valve group 1P, which can prevent damage to system components caused by reverse flow of hydraulic oil.

[0026] When the side brush motor 3 is not working, the switching valve 5 is in the lower position, and the hydraulic oil from the oil outlet of the roller brush motor 2 flows into the control valve group 1B port through the first oil outlet of the switching valve 5. The one-way valve 7 prevents the hydraulic oil from flowing to the second oil outlet of the overflow throttle valve 4 and the oil outlet of the side brush motor 3.

[0027] The leakage port pipe 8 of the roller brush motor 2 is used to drain the leakage oil accumulated inside the housing of the roller brush motor 2, so as to prevent the leakage oil pressure inside the housing of the roller brush motor 2 from being too high and damaging the shaft seal and housing of the roller brush motor 2.

Claims

1. A sweeper broom control hydraulic system characterized by: Includes control valve assembly (1), roller brush motor (2), side brush motor (3), overflow throttle valve (4), switching valve (5), and hydraulic cylinder (6); The control valve group (1) has its P port connected to the oil source and its T port for oil return; the control valve group (1) has its A port connected to the oil inlet of the roller brush motor (2), the oil outlet of the roller brush motor (2) connected to the oil inlet of the switching valve (5), the first oil outlet of the switching valve (5) connected to the B port of the control valve group (1), the second oil outlet of the switching valve (5) connected to the oil inlet of the overflow throttle valve (4), the first oil outlet of the overflow throttle valve (4) connected to the oil inlet of the side brush motor (3), the oil outlet of the side brush motor (3) and the second oil outlet of the overflow throttle valve (4) connected together and connected to the B port of the control valve group (1); the control valve group (1) has its A1 port and B1 port connected to the large chamber and small chamber of the oil cylinder (6) respectively.

2. The sweeper edge brush control hydraulic system of claim 1, wherein, The control valve group (1) includes: a cartridge valve (11), a throttle valve (12), and a directional valve (13); the inlet of the cartridge valve (11) is connected to port B of the control valve group (1), and the outlet of the cartridge valve (11) is connected to port T of the control valve group (1); the inlet of the throttle valve (12) is connected to port B of the control valve group (1), and the outlet of the throttle valve (12), the control port of the cartridge valve (11), and the inlet of the directional valve (13) are connected; the first and second outlets of the directional valve (13) are connected to ports A1 and B1 of the control valve group (1), respectively, and the return port of the directional valve (13) is connected to port T of the control valve group (1); the P port and A port of the control valve group (1) are connected.

3. The sweeper edge brush control hydraulic system of claim 2, wherein, The control valve group (1) further includes: overflow valve one (14), overflow valve two (15), check valve two (16), and check valve three (17); the oil inlet of overflow valve one (14) is connected to the A port of control valve group (1); the oil outlet of overflow valve one (14) is connected to the T port of control valve group (1); the oil inlet of overflow valve two (15) is connected to the oil inlet of directional valve (13), and the oil outlet of overflow valve two (15) is connected to the oil outlet of control valve group (1); the oil inlet of check valve two (16) is connected to the B port of control valve group (1), and the oil outlet of check valve two (16) is connected to the A port of control valve group (1); the oil inlet of check valve three (17) is connected to the T port of control valve group (1), and the oil outlet of check valve three (17) is connected to the P port of control valve group (1).

4. The sweeper edge brush control hydraulic system of claim 2, wherein: When the reversing valve (13) is in the neutral position, the oil inlet is connected to the oil return port.

5. The sweeper side brush control hydraulic system according to claim 1, characterized in that, The hydraulic system further includes: a check valve (7); the oil inlet of the check valve (7), the oil outlet of the side brush motor (3), and the second oil outlet of the overflow throttle valve (4) are connected; the oil outlet of the check valve (7), the first oil outlet of the switching valve (5), and the B port of the control valve group (1) are connected.

6. The sweeper edge brush control hydraulic system of claim 1, wherein, The hydraulic system also includes: a leakage port pipeline (8) for the roller brush motor (2); one end of the leakage port pipeline (8) is connected to the leakage port of the roller brush motor (2), and the other end is connected back to the oil tank.

7. A sweeper characterized by: The sweeper includes the side brush control hydraulic system as described in claim 1, wherein the sweeper is provided with a side brush device and is connected to and driven by a side brush motor (3).

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