A wet spray trolley boom hydraulic control system

Abstract

The utility model discloses a kind of wet spray trolley boom hydraulic control systems, it includes walking multiway valve, auxiliary valve block, boom multiway valve, walking multiway valve is provided with multiple working oil ports, walking multiway valve is connected respectively through multiple working oil ports steering oil cylinder, left rear walking motor, right rear walking motor, left front walking motor, right front walking motor;The oil port A4 of walking multiway valve is connected with the oil port A3 of auxiliary valve block, oil port B4 is connected with the oil port B3 of auxiliary valve block, the oil port A5 of auxiliary valve block is connected with the oil port P of boom multiway valve;The boom multiway valve is provided with multiple working oil ports, and is connected respectively through multiple working oil ports boom slewing motor, big arm pitch cylinder, boom telescopic cylinder, 360 ° motor, 240 ° motor, spray head motor.The utility model utilizes chassis power to drive boom action, facilitate staff to realize boom height and angle operation in the process of driving in narrow space, can flexibly drive equipment in narrow space operation.

Description

Technical Field

[0001] This utility model belongs to the technical field of wet spraying trolleys, and in particular relates to a hydraulic control system for the boom of a wet spraying trolley. Background Technology

[0002] Wet spraying trolleys are key equipment used for concrete spraying in tunnel and mine engineering projects. These trolleys are self-propelled and can spray wet concrete mix onto the working surface for lining and supporting rock, brick walls, reinforced concrete structures, and wooden formwork. Most existing wet spraying trolleys are single-cab designs, making simultaneous driving and boom control difficult. This makes rapid turning and maneuvering challenging, especially in confined spaces. If the boom cannot be properly positioned, the vehicle is prone to colliding with the mine walls, causing unpredictable damage. Summary of the Invention

[0003] To address the aforementioned problems, the purpose of this utility model is to provide a hydraulic control system for the boom of a wet spraying trolley. This system utilizes the chassis power to drive the boom's movement, allowing operators to easily adjust the boom's height and angle during operation in confined spaces, thus preventing collisions with walls.

[0004] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0005] A hydraulic control system for a wet spraying trolley boom includes a travel multi-way valve, an auxiliary valve block, and a boom multi-way valve. The travel multi-way valve has multiple working ports, which are connected to a steering cylinder, a left rear travel motor, a right rear travel motor, a left front travel motor, and a right front travel motor, respectively. Port A4 of the travel multi-way valve is connected to port A3 of the auxiliary valve block, port B4 is connected to port B3 of the auxiliary valve block, and port A5 of the auxiliary valve block is connected to port P of the boom multi-way valve. The boom multi-way valve has multiple working ports, which are connected to a boom slewing motor, a boom pitch cylinder, a boom telescopic cylinder, a 360° motor, a 240° motor, and a nozzle motor, respectively.

[0006] Furthermore, the aforementioned travel multi-way valve has port P connected to the variable pump, port LS connected to the variable pump load-sensitive control port, port R connected to the hydraulic radiator, and port T connected back to the oil tank; port A1 of the travel multi-way valve is connected to the rodless chamber of the steering cylinder, port B1 is connected to the rod chamber of the steering cylinder, port A2 is connected to port P1 of the left rear travel motor, port B2 is connected to port P1 of the right rear travel motor, port A3 is connected to port P1 of the left front travel motor, port B3 is connected to port P1 of the right front travel motor, port A4 is connected to port A3 of the auxiliary valve block, and port B4 is connected to port B3 of the auxiliary valve block.

[0007] Furthermore, the aforementioned hydraulic control system for the wet spraying trolley boom also includes a high-low speed switching valve and a parking brake valve. The oil port Z of the travel multi-way valve is connected to the third oil port of the high-low speed switching valve, and the third oil port of the high-low speed switching valve is connected to the third oil port of the parking brake valve. The second oil port is connected to the oil ports Ps of the left front travel motor, left rear travel motor, right front travel motor, and right rear travel motor. The first oil ports of the high-low speed switching valve and the first oil port of the parking brake valve are connected and returned to the oil tank. The second oil port of the parking brake valve is connected to the oil ports Pb of the left front travel motor, left rear travel motor, right front travel motor, and right rear travel motor.

[0008] Furthermore, the oil port P1 of the left rear travel motor is connected to the oil port P2 of the right rear travel motor, the oil port P2 of the left rear travel motor is connected to the oil port P1 of the right rear travel motor, the oil port P1 of the left front travel motor is connected to the oil port P2 of the right front travel motor, and the oil port P2 of the left front travel motor is connected to the oil port P1 of the right front travel motor; the oil ports Ps of the left rear travel motor, right rear travel motor, left front travel motor, and right front travel motor are all connected, and the oil ports Pb of the left rear travel motor, right rear travel motor, left front travel motor, and right front travel motor are all connected; the oil port T1 of the left rear travel motor is connected to the oil port T2 of the right rear travel motor, and the oil port T1 of the left front travel motor is connected to the oil port T2 of the right front travel motor.

[0009] Furthermore, the oil port P of the aforementioned auxiliary valve block is connected to a metering pump, and the T port is connected back to the oil tank. The oil port P of a two-position four-way solenoid valve in the auxiliary valve block is connected to the oil port A3 of the auxiliary valve block, the oil port A is connected to the oil port A5 of the auxiliary valve block, and the oil port A5 of the auxiliary valve block is connected to the oil port P of the boom multi-way valve.

[0010] Furthermore, the aforementioned boom multi-way valve has port P connected to a metering pump, port R connected to a hydraulic radiator, and port T connected to the return oil tank; ports A1 and B1 of the boom multi-way valve are respectively connected to the inlet and outlet of the boom slewing motor, ports A2 and B2 are respectively connected to the rodless chamber and rod chamber of the boom pitch cylinder, ports A3 and B3 are respectively connected to the rodless chamber and rod chamber of the boom telescopic cylinder, ports A4 and B4 are respectively connected to the inlet and outlet of the 360° motor, ports A5 and B5 are respectively connected to the inlet and outlet of the 240° motor, and ports A6 and B6 are respectively connected to the inlet and outlet of the nozzle motor.

[0011] Due to the adoption of the technical solution described above, this utility model has the following advantages:

[0012] The hydraulic control system of the wet spraying trolley boom has a reasonable structural design and is easy to operate, making it convenient for workers to operate the equipment flexibly. Especially in narrow spaces and narrow alleys, the wet spraying trolley can adjust the boom position without stopping when moving in and out. By adjusting the boom position through two-way driving mode and when walking and turning, the equipment can be flexibly driven to work in confined spaces, and it has good promotion and application value. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the hydraulic control system for the wet spraying trolley boom of this utility model;

[0014] In the diagram: 1 - Travel multi-way valve; 2 - High / low speed switching valve; 3 - Parking brake valve; 4 - Steering cylinder; 5 - Left rear travel motor; 6 - Right rear travel motor; 7 - Left front travel motor; 8 - Right front travel motor; 9 - Auxiliary valve block; 9a - Two-position four-way solenoid valve; 10 - Boom multi-way valve; 11 - Boom slewing motor; 12 - Boom pitch cylinder; 13 - Boom telescopic cylinder; 14 - 360° motor; 15 - 240° motor; 16 - Nozzle motor. Detailed Implementation

[0015] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0016] like Figure 1As shown, the hydraulic control system of the wet spraying trolley boom includes a travel multi-way valve 1, a steering cylinder 4, a left rear travel motor 5, a right rear travel motor 6, a left front travel motor 7, a right front travel motor 8, an auxiliary valve block 9, a boom multi-way valve 10, a boom slewing motor 11, a boom pitch cylinder 12, a boom telescopic cylinder 13, a 360° motor 14, a 240° motor 15, and a nozzle motor 16. Port P of the travel multi-way valve 1 is connected to a variable pump, port LS is connected to the variable pump load-sensitive control port, port R is connected to the hydraulic radiator, and port T is connected back to the oil tank. The travel multi-way valve 1 includes multiple proportional solenoid valves, each proportional solenoid valve corresponding to two... There are five working oil ports: port A1 is connected to the rodless chamber of steering cylinder 4, port B1 is connected to the rod chamber of steering cylinder, port A2 is connected to port P1 of left rear travel motor 5, port B2 is connected to port P1 of right rear travel motor 6, port A3 is connected to port P1 of left front travel motor 7, port B3 is connected to port P1 of right front travel motor 8, port A4 is connected to port A3 of auxiliary valve block 9, and port B4 is connected to port B3 of auxiliary valve block 9. Port P of auxiliary valve block 9 is connected to a metering pump, and port T is connected back to the oil tank. The auxiliary valve block integrates five solenoid valves: two M-type three-position four-way solenoid valves and three two-position four-way solenoid valves. The solenoid valves, with the middle position function consisting of two M-type three-position four-way solenoid valves; the oil port P of the two-position four-way solenoid valve 9a among the three two-position four-way solenoid valves is connected to the oil port A3 of the auxiliary valve block 9, oil port A is connected to the oil port A5 of the auxiliary valve block, and oil port A5 of the auxiliary valve block is connected to the oil port P of the boom multi-way valve 10; the oil port P of the boom multi-way valve 10 is connected to a metering pump, oil port R is connected to a hydraulic radiator, and oil port T is connected to the return oil tank; the boom multi-way valve includes multiple proportional solenoid valves, each proportional solenoid valve corresponding to two working oil ports, oil ports A1 and B1 are respectively connected to the inlet and outlet of the boom slewing motor 11, used to control the 360-degree rotation of the boom, and oil port A2... Oil port B2 is connected to the rodless chamber and the rod chamber of the boom tilt cylinder 12, respectively, to control the boom's up and down swing. Oil ports A3 and B3 are connected to the rodless chamber and the rod chamber of the boom telescopic cylinder 13, respectively, to control the boom's forward and backward telescopic movement. Oil ports A4 and B4 are connected to the inlet and outlet of the 360° motor 14, respectively, to control the left and right rotation direction of the boom's front tilting body. Oil ports A5 and B5 are connected to the inlet and outlet of the 240° motor 15, respectively, to control the up and down rotation direction of the boom's front tilting body. Oil ports A6 and B6 are connected to the inlet and outlet of the nozzle motor 16, respectively, to control the swing range of the nozzle at the front of the boom.

[0017] The aforementioned hydraulic control system for the wet spraying trolley boom further includes a high-low speed switching valve 2 and a parking brake valve 3. The oil port Z of the travel multi-way valve 1 is connected to the third oil port of the high-low speed switching valve 2. The third oil port of the high-low speed switching valve 2 is connected to the third oil port of the parking brake valve 3. The second oil port is connected to the oil ports Ps of the left rear travel motor 5, right rear travel motor 6, left front travel motor 7, and right front travel motor 8. The first oil port of the high-low speed switching valve 2 and the first oil port of the parking brake valve 3 are connected and... Returning to the oil tank, the second oil port of the parking brake valve 3 is connected to the oil port Pb of the left front travel motor, left rear travel motor, right front travel motor, and right rear travel motor; the oil port P1 of the left rear travel motor 5 is connected to the oil port P2 of the right rear travel motor 6, the oil port P2 of the left rear travel motor is connected to the oil port P1 of the right rear travel motor, the oil port P1 of the left front travel motor 7 is connected to the oil port P2 of the right front travel motor 8, and the oil port P2 of the left front travel motor is connected to the oil port P1 of the right front travel motor.

[0018] The oil ports Ps of the left rear travel motor, right rear travel motor, left front travel motor, and right front travel motor are all connected, and the oil ports Pb of the left rear travel motor, right rear travel motor, left front travel motor, and right front travel motor are all connected; the oil port T1 of the left rear travel motor 5 is connected to the oil port T2 of the right rear travel motor 6, and the oil port T1 of the left front travel motor 7 is connected to the oil port T2 of the right front travel motor 8.

[0019] During remote control operation, the operating status of each solenoid valve is as follows:

[0020] (1) When all the proportional solenoid valves in the travel multi-way valve 1 are de-energized, the wet spraying trolley stops;

[0021] (2) When the solenoid valves DT2 and DT3 in the travel multi-way valve are energized, the wet spraying trolley travel mode is activated.

[0022] (3) When the solenoid valves DT1, DT2 and DT3 in the travel multi-way valve 1 are energized, the wet spraying trolley is in steering mode.

[0023] (4) When the solenoid valve DT6 in the travel multi-way valve 1 and the solenoid valve DT7 in the auxiliary valve block 9 are energized, it is the operating mode of the boom during the travel of the wet spraying trolley.

[0024] (5) When the solenoid valve DT8 in the boom multi-way valve 10 is energized, it is in boom rotation mode; when the solenoid valve DT9 is energized, it is in boom pitch mode; when the solenoid valve DT10 is energized, it is in boom extension mode; when the solenoid valve DT11 is energized, it is in boom front flip body 360° rotation mode; when the solenoid valve DT12 is energized, it is in boom front flip body 240° rotation mode; when the solenoid valve DT13 is energized, it is in nozzle clockwise brushing mode.

[0025] (6) When the solenoid valve DT4 of the high-low speed switching valve 2 is energized, it is in the high-speed driving mode of the wet spraying trolley.

[0026] (7) When the solenoid valve DT5 of the parking brake valve 3 is not energized, the wet spray trolley is in parking mode and the vehicle is paused.

[0027] The logic relationships of each solenoid valve under various driving modes are shown in the table below: 1 indicates the energized state; 0 indicates the de-energized state; "+" indicates that the oil inlet P of the solenoid valve is connected to the working oil port A, and "-" indicates that the oil inlet P of the solenoid valve is connected to the working oil port B.

[0028]

[0029] The parts of this utility model not described in detail are prior art. Although this utility model has been specifically shown and introduced in conjunction with the preferred embodiments, there are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hydraulic control system for a wet spraying trolley boom, characterized in that: It includes a travel multi-way valve, an auxiliary valve block, and a boom multi-way valve. The travel multi-way valve has multiple working ports, which are connected to the steering cylinder, the left rear travel motor, the right rear travel motor, the left front travel motor, and the right front travel motor, respectively. Port A4 of the travel multi-way valve is connected to port A3 of the auxiliary valve block, port B4 is connected to port B3 of the auxiliary valve block, and port A5 of the auxiliary valve block is connected to port P of the boom multi-way valve. The boom multi-way valve has multiple working ports, which are connected to the boom slewing motor, the boom pitch cylinder, the boom telescopic cylinder, the 360° motor, the 240° motor, and the nozzle motor, respectively.

2. The hydraulic control system for the wet spraying trolley boom according to claim 1, characterized in that: The travel multi-way valve has port P connected to the variable pump, port LS connected to the variable pump load-sensitive control port, port R connected to the hydraulic radiator, and port T connected back to the oil tank. Port A1 of the travel multi-way valve is connected to the rodless chamber of the steering cylinder, port B1 is connected to the rod chamber of the steering cylinder, port A2 is connected to port P1 of the left rear travel motor, port B2 is connected to port P1 of the right rear travel motor, port A3 is connected to port P1 of the left front travel motor, port B3 is connected to port P1 of the right front travel motor, port A4 is connected to port A3 of the auxiliary valve block, and port B4 is connected to port B3 of the auxiliary valve block.

3. The hydraulic control system for the wet spraying trolley boom according to claim 1 or 2, characterized in that: It also includes a high-low speed switching valve and a parking brake valve. The oil port Z of the travel multi-way valve is connected to the third oil port of the high-low speed switching valve. The third oil port of the high-low speed switching valve is connected to the third oil port of the parking brake valve. The second oil port is connected to the oil port Ps of the left front travel motor, the left rear travel motor, the right front travel motor, and the right rear travel motor. The first oil port of the high-low speed switching valve and the first oil port of the parking brake valve are connected and returned to the oil tank. The second oil port of the parking brake valve is connected to the oil port Pb of the left front travel motor, the left rear travel motor, the right front travel motor, and the right rear travel motor.

4. The hydraulic control system for the wet spraying trolley boom according to claim 1 or 2, characterized in that: The oil port P1 of the left rear travel motor is connected to the oil port P2 of the right rear travel motor, the oil port P2 of the left rear travel motor is connected to the oil port P1 of the right rear travel motor, the oil port P1 of the left front travel motor is connected to the oil port P2 of the right front travel motor, and the oil port P2 of the left front travel motor is connected to the oil port P1 of the right front travel motor; the oil ports Ps of the left rear travel motor, right rear travel motor, left front travel motor, and right front travel motor are all connected, and the oil ports Pb of the left rear travel motor, right rear travel motor, left front travel motor, and right front travel motor are all connected; the oil port T1 of the left rear travel motor is connected to the oil port T2 of the right rear travel motor, and the oil port T1 of the left front travel motor is connected to the oil port T2 of the right front travel motor.

5. The hydraulic control system for the wet spraying trolley boom according to claim 1, characterized in that: The auxiliary valve block has port P connected to a metering pump and port T connected back to the oil tank. Port P of a two-position four-way solenoid valve in the auxiliary valve block is connected to port A3 of the auxiliary valve block. Port A is connected to port A5 of the auxiliary valve block. Port A5 of the auxiliary valve block is connected to port P of the boom multi-way valve.

6. The hydraulic control system for the wet spraying trolley boom according to claim 1 or 5, characterized in that: The boom multi-way valve has port P connected to a metering pump, port R connected to a hydraulic radiator, and port T connected to the return oil tank. Ports A1 and B1 of the boom multi-way valve are connected to the inlet and outlet of the boom slewing motor, respectively. Ports A2 and B2 are connected to the rodless and rod-side chambers of the boom pitch cylinder, respectively. Ports A3 and B3 are connected to the rodless and rod-side chambers of the boom telescopic cylinder, respectively. Ports A4 and B4 are connected to the inlet and outlet of the 360° motor, respectively. Ports A5 and B5 are connected to the inlet and outlet of the 240° motor, respectively. Ports A6 and B6 are connected to the inlet and outlet of the nozzle motor, respectively.

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