Tower crane local control and remote control switching device

Abstract

The utility model relates to the technical field of tower crane control, and discloses a local control and remote control switching device for a tower crane, which is characterized by comprising a switching module, a local controller, a remote controller, an electric proportional pressure reducing valve, a shuttle valve group, a lifting pump, a variable amplitude pump and a rotary pump, the switching module is respectively connected with the local controller and the remote controller, and the remote controller is connected with the remote control responder in a radio wave mode; the local controller and the electric proportional pressure reducing valve are connected into the control end of the shuttle valve set, and the output end of the shuttle valve set is connected with the lifting pump, the variable amplitude pump and the rotary pump through hydraulic pipelines. The switching module is used for switching the shuttle valve group to be controlled by the local controller or the remote control responder; and the shuttle valve group is used for controlling the actions of the lifting pump, the variable amplitude pump and the rotary pump.

Description

Technical Field

[0001] The utility model relates to the technical field of tower crane control, and more specifically, it relates to a device for switching between local control and remote control of a tower crane. Background Technique

[0002] With the popular application of large tower cranes in various large infrastructure projects, the performance requirements for tower cranes are getting higher and higher, especially the safety requirements. Traditional tower crane control generally uses a dedicated driver to operate the tower crane in the tower crane cab. At the same time, on the construction site, there is another commander who uses communication devices such as mobile phones or telephones to conduct on-site auxiliary communication and guidance for the driver in the tower crane cab. Only in this way can more precise actual on-demand control of the tower crane be achieved.

[0003] However, this way of controlling the tower crane operation through cross-regional communication is still restricted by the communication method. It is difficult for the driver in the cab to accurately perform the operations required by the on-site commander, and repeated communication and adjustment are needed, which has a negative impact on the actual operation efficiency and also has a certain impact on the accuracy of the tower crane operation. Therefore, it is necessary to upgrade the actual remote and local control methods of the tower crane to obtain more efficient and accurate tower crane control. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a device for switching between local control and remote control of a tower crane, which can perform local operation and remote wireless remote control operation on the tower crane according to the actual situation on site, can be quickly switched, is safe and reliable, and is convenient to operate.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: A device for switching between local control and remote control of a tower crane, including: a switching module, a local controller, a remote controller, an electro-hydraulic proportional relief valve, a shuttle valve group, a hoisting pump, a luffing pump, a slewing pump;

[0006] The switching module is respectively connected to the local controller and the remote controller, and the remote controller is connected to the remote control responder by radio waves;

[0007] The local controller and the electro-hydraulic proportional relief valve are respectively connected to the control end of the shuttle valve group, and the output end of the shuttle valve group is connected to the hoisting pump, the luffing pump and the slewing pump through hydraulic pipelines;

[0008] The switching module is used to switch the control of the shuttle valve group from the local controller or the remote control responder;

[0009] The shuttle valve group is used to control the actions of the hoisting pump, the luffing pump and the slewing pump.

[0010] As a preferred technical solution of the present utility model, the remote control responder is an electro-hydraulic proportional pressure reducing valve.

[0011] As a preferred technical solution of the present utility model, the switching module is a solenoid valve connected to the tower crane, and the solenoid valve is used to switch the control mode of the shuttle valve group. The control modes of the shuttle valve group include local controller control and electro-hydraulic proportional pressure reducing valve control.

[0012] As a preferred technical solution of the present utility model, when the solenoid valve is energized, the shuttle valve group is controlled by the electro-hydraulic proportional pressure reducing valve. When the solenoid valve is de-energized, the shuttle valve group is controlled by the local controller.

[0013] As a preferred technical solution of the present utility model, the remote controller is a wireless charging type controller, and a plurality of control buttons are arranged on the remote controller. The control buttons are used to issue operation instructions for the hoisting pump, the luffing pump, and the slewing pump.

[0014] As a preferred technical solution of the present utility model, the local controller includes a local luffing and slewing operation handle and a local hoisting operation handle. The local luffing and slewing operation handle is correspondingly connected to the pipeline sectional valve on the shuttle valve group that connects the luffing pump and the slewing pump. The local hoisting operation handle is correspondingly connected to the pipeline sectional valve on the shuttle valve group that connects the hoisting pump.

[0015] As a preferred technical solution of the present utility model, the solenoid valve is provided with a remote / local operation switching knob for controlling the energized and de-energized states. The remote / local operation switching knob is arranged in the cab of the tower crane.

[0016] In summary, the present utility model has the following beneficial effects: The solenoid valve is controlled by the remote / local operation switching knob in the cab. When the solenoid valve is de-energized, the local luffing and slewing operation handle and the local hoisting operation handle in the cab of the tower crane can be operated to control the oil to pass through the respective sectional valves of the shuttle valve group located on the tower crane platform to control the hoisting, luffing, and slewing directions of the tower crane, and the driver can perform local control of the tower crane. When the solenoid valve located on the tower crane platform is energized, the electro-hydraulic proportional pressure reducing valve located on the tower crane platform is controlled by the control buttons such as the pilot handle lever on the remote controller. The control oil passes through the sectional valves on the shuttle valve group to control the hoisting, luffing, and slewing directions of the tower crane, and remote control of the tower crane can be realized. The switching control device of the present utility model can perform local operation and remote wireless remote control operation on the tower crane according to the actual situation on site, can be quickly switched, is safe and reliable, and is convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the local / remote remote control switching hydraulic schematic diagram;

[0018] Figure 2 It is the connection diagram of the local / remote remote control switching pipeline;

[0019] Figure 3 It is the flow chart of the local / remote remote control switching.

[0020] In the figure: 1. Shuttle valve group; 2. Electro-hydraulic proportional pressure reducing valve; 3. Solenoid valve; 4. Local hoisting operation handle; 5. Local luffing and slewing operation handle; 6. Hoisting pump; 7. Luffing pump; 8. Slewing pump. Specific implementation manner

[0021] In order to make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] As Figure 2 shown, the present utility model provides a tower crane local control and remote control switching device, including: a switching module, a local controller, a remote controller, an electro-hydraulic proportional pressure reducing valve 2, a shuttle valve group 1, a hoisting pump 6, a luffing pump 7, and a slewing pump 8;

[0023] The switching module is respectively connected to the local controller and the remote controller, and the remote controller is connected to the remote control responder by radio waves; the local controller and the electro-hydraulic proportional pressure reducing valve 2 are respectively connected to the control end of the shuttle valve group 1, and the output end of the shuttle valve group 1 is connected to the hoisting pump 6, the luffing pump 7, and the slewing pump 8 through hydraulic pipelines; the shuttle valve group 1 is used to control the actions of the hoisting pump 6, the luffing pump 7, and the slewing pump 8. The switching module is used to switch the control of the shuttle valve group 1 by the local controller or the remote control responder;

[0024] The switching module is a solenoid valve 3 connected to the tower crane, and the remote control responder is an electro-hydraulic proportional pressure reducing valve 2.

[0025] The solenoid valve 3 is used to switch the control mode of the shuttle valve group 1, and the control mode of the shuttle valve group 1 includes local controller control and electro-hydraulic proportional pressure reducing valve 2 control. When the solenoid valve 3 is energized, the shuttle valve group 1 is controlled by the electro-hydraulic proportional pressure reducing valve 2, and when the solenoid valve 3 is de-energized, the shuttle valve group 1 is controlled by the local controller.

[0026] Specifically, the remote controller is a wireless charging type controller, and several control buttons are arranged on the remote controller. The control buttons are used to issue action instructions for the hoisting pump 6, the luffing pump 7, and the slewing pump 8. During remote control, the remote controller and the electro-hydraulic proportional reducing valve 2 are connected wirelessly. The control buttons on the remote controller send corresponding electrical signals to the electro-hydraulic proportional reducing valve 2. After receiving the corresponding control electrical signals, the electro-hydraulic proportional reducing valve 2 makes a response, thereby performing corresponding control operations on the shuttle valve group 1 to complete the remote control of the tower crane.

[0027] Specifically, the local controller includes a local luffing and slewing operation handle 5 and a local hoisting operation handle 4. The local luffing and slewing operation handle 5 is correspondingly connected to the pipeline sub-valve connecting the luffing pump 7 and the slewing pump 8 on the shuttle valve group 1, and the local hoisting operation handle 4 is correspondingly connected to the pipeline sub-valve connecting the hoisting pump 6 on the shuttle valve group 1.

[0028] Specifically, the solenoid valve 3 is provided with a remote / local operation switching knob for controlling the energized and de-energized states. The remote / local operation switching knob is arranged in the cab of the tower crane.

[0029] As Figure 1 shown in the local-remote switching electro-hydraulic control hydraulic schematic diagram of the tower crane, the solenoid valve 3 is controlled by the remote / local operation switching knob in the cab. As Figure 3 shown, when the solenoid valve 3 is de-energized, the local luffing and slewing operation handle 5 and the local hoisting operation handle 4 in the cab of the tower crane can be operated to control the oil to pass through each sub-valve of the shuttle valve group 1 located on the tower crane platform to control the hoisting, luffing, and slewing directions of the tower crane, and the driver can perform local control of the tower crane;

[0030] When the solenoid valve 3 located on the tower crane platform is energized, the electro-hydraulic proportional reducing valve 2 located on the tower crane platform is controlled by the pilot handle lever and other control buttons on the remote controller. The control oil passes through the sub-valves on the shuttle valve group 1 to control the hoisting, luffing, and slewing directions of the tower crane, and remote control of the tower crane can be realized; the hoisting pump 6 is installed in the tower crane pump station to provide a power source for hoisting, the luffing pump 7 is installed in the tower crane pump station to provide a power source for the luffing of the tower crane, and the slewing pump 8 is installed in the tower crane pump station to provide a power source for slewing.

[0031] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications; any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tower crane local control and remote control switching device, characterized in that: Including: A switching module, a local controller, a remote controller, an electro-hydraulic proportional pressure reducing valve, a shuttle valve group, a hoisting pump, a luffing pump, and a slewing pump; The switching module is respectively connected to the local controller and the remote controller, and the remote controller is connected to the remote control responder by radio waves; The local controller and the electro-hydraulic proportional pressure reducing valve are respectively connected to the control ends of the shuttle valve group, and the output ends of the shuttle valve group are connected to the hoisting pump, the luffing pump, and the slewing pump through hydraulic pipelines; The switching module is used to switch the control of the shuttle valve group by the local controller or the remote control responder; The shuttle valve group is used to control the actions of the hoisting pump, the luffing pump, and the slewing pump.

2. The local control and remote control switching device for tower crane according to claim 1, characterized in that: The remote control responder is an electro-hydraulic proportional pressure reducing valve.

3. The local control and remote control switching device for tower crane according to claim 2, characterized in that: The switching module is a solenoid valve connected to the tower crane. The solenoid valve is used to switch the control mode of the shuttle valve group. The control modes of the shuttle valve group include local controller control and electro-hydraulic proportional pressure reducing valve control.

4. A tower crane local control and remote control switching device according to claim 3, characterized in that: When the solenoid valve is energized, the shuttle valve group is controlled by the electro-hydraulic proportional pressure reducing valve. When the solenoid valve is de-energized, the shuttle valve group is controlled by the local controller.

5. The tower crane local control and remote control switching device according to claim 4, characterized in that: The remote controller is a wireless charging type controller, and a number of control buttons are arranged on the remote controller. The control buttons are used to issue action commands for the hoisting pump, the luffing pump, and the slewing pump.

6. The local control and remote control switching device for tower crane according to claim 5, characterized in that: The local controller includes a local luffing and slewing operation handle and a local hoisting operation handle. The local luffing and slewing operation handle is correspondingly connected to the pipeline sub-valve connecting the luffing pump and the slewing pump on the shuttle valve group, and the local hoisting operation handle is correspondingly connected to the pipeline sub-valve connecting the hoisting pump on the shuttle valve group.

7. A tower crane local control and remote control switching device according to claim 6, characterized in that: The solenoid valve is provided with a remote / local operation switching knob for controlling the energized and de-energized states. The remote / local operation switching knob is arranged in the cab of the tower crane.

Images