Jacking hydraulic system at same speed of lifting tower

Abstract

The utility model discloses a lifting tower same-speed jacking hydraulic system, and relates to the technical field of lifting tower hydraulic systems, the lifting tower same-speed jacking hydraulic system comprises an oil conveying assembly, the oil conveying assembly comprises an oil tank and a reversing valve, the oil tank is connected with an oil pump through a pipeline, and the oil tank is fixedly connected with an oil return pipe; the reversing valve is provided with two sets of input connectors and two sets of output connectors, the output end of the oil pump and the output end of the oil return pipe are connected with the two sets of input connectors of the reversing valve in a matched mode respectively, and the device further comprises a hydraulic supporting assembly used for maintaining the stability of the whole device and a hydraulic lifting assembly used for pushing the lifting tower to ascend and descend. When in use, the single oil supply component can be utilized, and different flow guide connecting blocks are selectively connected, so that flexible control on different hydraulic components can be realized, and the method not only reduces the manufacturing cost, but also enables maintenance work such as hydraulic oil replacement and oil path cleaning to be more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of lifting tower hydraulic system, concretely relates to a lifting tower synchronous jacking hydraulic system. BACKGROUND

[0002] The lifting tower hydraulic system is a mechanical control system using liquid to transfer power and energy, which is mainly composed of a hydraulic pump, a hydraulic cylinder, an oil tank, a control valve and other components.

[0003] The mobile lifting tower is a lifting tower that can be moved by a transport tool, and it integrates multiple hydraulic systems, including a hydraulic support assembly and a lifting hydraulic system.

[0004] The existing technical solution has the following disadvantages: First, the configuration of multiple hydraulic systems means that multiple high-performance components such as hydraulic pumps, reversing valves, and hydraulic cylinders need to be installed, which undoubtedly increases the overall manufacturing and maintenance costs. INVENTION CONTENTS

[0005] The utility model aims at providing a lifting tower synchronous jacking hydraulic system to solve the technical problem of increasing the overall manufacturing and maintenance costs of the mobile lifting tower equipped with multiple hydraulic systems in the prior art.

[0006] The technical problem solved by the utility model can be achieved through the following technical solutions:

[0007] The utility model provides a hydraulic system of jacking of the same speed of lifting tower, including oil delivery subassembly, the oil delivery subassembly includes oil tank and reversing valve, the oil tank is connected with oil pump through pipeline, the oil tank is fixedly connected with the oil return pipe, the reversing valve is provided with two groups of input interface and two groups of output interface, the output end of oil pump and oil return pipe is connected with two groups of input interface of reversing valve respectively, and the device still includes hydraulic support subassembly for maintaining the stability of whole device, hydraulic lifting subassembly for pushing the lifting of lifting tower, first flow guide contact block matched with hydraulic support subassembly and second flow guide contact block matched with hydraulic lifting subassembly, and the hydraulic lifting subassembly and second flow guide contact block are all matched and are provided with multiple groups, and two groups of output interface of reversing valve are connected with oil delivery contact block matched with first flow guide contact block and second flow guide contact block through pipeline.

[0008] As a further scheme of the utility model: the hydraulic support subassembly includes two groups of first flow guide pipes matched with first flow guide contact block, the other end of each group of first flow guide pipes is fixedly connected with shunt valve, a plurality of first shunt interfaces are arranged on each group of shunt valves, each group of first shunt interfaces is connected with a group of first oil cylinders through pipeline, two groups of first oil pipe interfaces are arranged on each group of first oil cylinders, each group of first oil pipe interfaces is communicated with corresponding first shunt interface through pipeline, and each group of first oil cylinders is connected with two groups of shunt valves through two groups of first oil pipe interfaces respectively.

[0009] As a further scheme of the utility model: a plurality of stop valves are arranged on each group of shunt valves, and each group of stop valves is arranged on the pipeline between first oil pipe interface and first shunt interface.

[0010] As a further scheme of the utility model: each group of hydraulic lifting subassembly includes two groups of second flow guide pipes matched with corresponding second flow guide contact block, the other end of each group of second flow guide pipes is fixedly connected with shunt collector valve, a plurality of second shunt interfaces are arranged on each group of shunt collector valves, each group of second shunt interfaces is connected with second oil cylinder through pipeline, two groups of second oil pipe interfaces are arranged on each group of second oil cylinders, each group of second oil pipe interfaces is communicated with corresponding second shunt interface through pipeline, and each group of second oil cylinders is connected with two groups of shunt collector valves through two groups of second oil pipe interfaces respectively.

[0011] As a further scheme of the utility model: first throttling valve is matched and connected on the first flow guide pipe, and second throttling valve is matched and connected on the second flow guide pipe.

[0012] As a further scheme of the utility model: first oil pipe is fixedly connected between reversing valve and oil pump, second oil pipe is fixedly connected between first oil pipe and oil return pipe, and high pressure overflow valve is matched and connected on the second oil pipe.

[0013] The utility model discloses the beneficial effect of:

[0014] 1, the utility model discloses when using, when the oil delivery joint block is butt joint with the first flow guide joint block, can adjust the telescopic effect of hydraulic support leg, when the oil delivery joint block is butt joint with the second flow guide joint block, can drive the ascending or descending of the lift platform of the certain layer of lift tower, through the butt joint of selective to multiple second flow guide joint blocks, thereby realize the collaborative control of multiple lift platforms. Utilize single oil supply assembly, and through the selective connection of different flow guide joint blocks, the flexible control of different hydraulic assemblies can be realized, and this method not only reduces the manufacturing cost, but also makes the maintenance work such as hydraulic oil replacement, oil line cleaning more convenient.

[0015] 2, the utility model discloses when using, the intercommunication of first oil cylinder, make the pressure that transmits to every group first oil cylinder inside same, when the first oil cylinder of a group first oil cylinder top touch ground first, the shunt valve will distribute hydraulic oil to other first oil cylinder under the action of pressure, thereby guarantee the pressure of every group first oil cylinder inside same, and further make the first oil cylinder can adapt to different ground shape.

[0016] 3, the utility model discloses when using, when needing to push the lift tower and rise, adjust the oil delivery joint block and butt joint with a group second flow guide joint block, open oil pump, push the flow of hydraulic oil, and the shunt valve can distribute hydraulic oil evenly to the inside of multiple intercommunication second oil cylinders, thereby realize the effect that multiple second oil cylinders lift at the same speed, thereby guarantee the stability when using, and a group hydraulic lifting assembly corresponds the lift platform of a layer in lift tower, through the control of multiple such hydraulic lifting assemblies, the collaborative control of multiple lift platforms in lift tower can be realized. DRAWINGS

[0017] The utility model will be further described in connection with the drawings.

[0018] Figure 1 It is the whole structure schematic diagram of the utility model.

[0019] In the drawing: 1, oil tank;2, oil pump;3, first oil delivery pipe;4, reversing valve;5, oil delivery joint block;6, first flow guide joint block;7, hydraulic support assembly;701, first flow guide pipe;702, shunt valve;703, first oil cylinder;704, stop valve;705, first throttle valve;8, hydraulic lifting assembly;801, second flow guide pipe;802, shunt valve;803, second oil cylinder;804, second throttle valve;9, second flow guide joint block;10, high pressure overflow valve;12, second oil delivery pipe;13, oil return pipe. CONCRETE IMPLEMENTATION

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figure 1 As shown, a hydraulic lifting system for a lifting tower at the same speed includes an oil supply assembly, which includes an oil tank 1 and a reversing valve 4. The oil tank 1 is connected to an oil pump 2 via a pipeline, and a return oil pipe 13 is fixedly connected to the oil tank 1. The reversing valve 4 has two sets of input interfaces and two sets of output interfaces. The output ends of the oil pump 2 and the return oil pipe 13 are respectively connected to the two sets of input interfaces of the reversing valve 4. The device also includes a hydraulic support assembly 7 for maintaining the stability of the overall device, a hydraulic lifting assembly 8 for pushing the lifting tower up and down, a first guide block 6 that cooperates with the hydraulic support assembly 7, and a second guide block 9 that cooperates with the hydraulic lifting assembly 8. Both the first guide block 6 and the second guide block 9 have two sets of hydraulic oil delivery channels inside. The hydraulic lifting assembly 8 and the second guide block 9 each have multiple sets of these channels. The two output ports of the reversing valve 4 are connected via pipes to oil delivery blocks 5 that cooperate with the first guide block 6 and the second guide block 9. Each oil delivery block 5 has two sets of hydraulic oil delivery channels that communicate with the two output ports of the reversing valve 4. When the oil delivery block 5 is connected to the first guide block 6, it exchanges hydraulic oil with the first guide block 6. When the oil delivery block 5 is connected to the second guide block 9, it exchanges hydraulic oil with the second guide block 9. When neither the first guide block 6 nor the second guide block 9 is connected to the oil delivery block 5, the hydraulic oil channels inside the first guide block 6 and the second guide block 9 are blocked, thus preventing hydraulic oil overflow.

[0022] The hydraulic support assembly 7 comprises two groups of first flow guide pipes 701 connected with the first flow guide blocks 6, two groups of hydraulic oil flow channels in the first flow guide blocks 6 are communicated with the two groups of first flow guide pipes 701 respectively, one end of each group of first flow guide pipes 701 is fixedly connected with a flow distribution valve 702, a plurality of first flow distribution interfaces are arranged on each group of flow distribution valves 702, each group of first flow distribution interfaces is connected with a group of first oil cylinders 703 through pipelines, two groups of first oil pipe interfaces are arranged on each group of first oil cylinders 703, each group of first oil pipe interfaces is communicated with the corresponding first flow distribution interface through the pipeline, and each group of first oil cylinders 703 is connected with two groups of flow distribution valves 702 through two groups of first oil pipe interfaces respectively. The hydraulic oil enters the flow distribution valve 702 from the first flow guide pipe 701, and then enters a plurality of first oil cylinders 703, so as to drive the piston rod in the first oil cylinder 703 to move, and the hydraulic oil at the other end of the first oil cylinder 703 is extruded into the other group of flow distribution valves 702 connected, so as to realize the lifting effect of the first oil cylinder 703. The piston rod in the first oil cylinder 703 supports the whole, and the piston rod is the hydraulic support leg of the mobile lifting tower. And because the first oil cylinders 703 are communicated with each other, the pressure transmitted into each group of first oil cylinders 703 is the same, when a group of first oil cylinders 703 first touches the ground, the flow distribution valve 702 will distribute the hydraulic oil into other first oil cylinders 703 under the action of pressure, so as to ensure that the pressure in each group of first oil cylinders 703 is the same, and then the first oil cylinder 703 can adapt to different ground shapes.

[0023] A plurality of cut-off valves 704 are arranged on one group of flow distribution valves 702 in a matched mode, each group of cut-off valves 704 is arranged on the pipeline between the first oil pipe interface and the first flow distribution interface. When it is needed to drive a certain first oil cylinder 703 to lift alone, the cut-off valve 704 corresponding to the group of first oil cylinders 703 is opened, and other cut-off valves 704 are closed, so that the hydraulic oil only flows in the group of first oil cylinders 703, and the hydraulic oil flow channels in other first oil cylinders 703 are blocked, so as to realize the effect of lifting alone.

[0024] Each hydraulic lifting assembly 8 includes two groups of second flow guide pipes 801 connected with the corresponding second flow guide blocks 9, and the two groups of hydraulic oil flow passages in each second flow guide block 9 are respectively connected with the two groups of second flow guide pipes 801. Each second flow guide pipe 801 has a shunt and collecting valve 802 fixedly connected at the other end thereof. Each shunt and collecting valve 802 is provided with a plurality of second shunt interfaces. Each second shunt interface is connected with a second oil cylinder 803 through a pipeline. Each second oil cylinder 803 is provided with two second oil pipe interfaces. Each second oil pipe interface is connected with the corresponding second shunt interface through a pipeline. Each second oil cylinder 803 is respectively connected with the two shunt and collecting valves 802 through the two second oil pipe interfaces. The hydraulic oil entering the second flow guide pipe 801 is evenly distributed into the plurality of second oil cylinders 803 connected therewith under the action of the shunt and collecting valve 802, so as to realize the effect of synchronous lifting of the plurality of second oil cylinders 803 and ensure the stability of the lifting tower during use.

[0025] The first flow guide pipe 701 is connected with a first throttling valve 705, and the second flow guide pipe 801 is connected with a second throttling valve 804. The flow rate of the hydraulic oil in the first flow guide pipe 701 is adjusted through the first throttling valve 705, and the flow rate of the hydraulic oil in the second flow guide pipe 801 is adjusted through the second throttling valve 804, so as to adjust the lifting speed of the first oil cylinder 703 and the second oil cylinder 803.

[0026] The reversing valve 4 and the oil pump 2 are fixedly connected with a first oil delivery pipe 3. The first oil delivery pipe 3 and the oil return pipe 13 are fixedly connected with a second oil delivery pipe 12. The second oil delivery pipe 12 is connected with a high-pressure overflow valve 10. When the output power of the oil pump 2 is too large or the hydraulic oil flow passage is blocked, the oil pressure in the first oil delivery pipe 3 increases. When the oil pressure in the first oil delivery pipe 3 increases to a certain extent, the hydraulic oil flows through the high-pressure overflow valve 10 along the second oil delivery pipe 12. At this time, the hydraulic oil enters the oil return pipe 13 from the first oil delivery pipe 3 and finally directly flows into the oil tank 1, so as to avoid the pipe from being cracked due to excessive oil pressure.

[0027] In order to facilitate the person skilled in the art to understand the embodiment of the present scheme, the working principle of the embodiment of the present scheme will be described in combination with a specific application scenario:

[0028] The first oil cylinder 703 is used to control the telescopic effect of the hydraulic outrigger of the mobile lifting tower, and the second oil cylinder 803 is used to push the lifting tower to ascend or descend. When in use, the state of the hydraulic outrigger needs to be adjusted first. The oil delivery block 5 is first connected with the first flow guide block 6, so that the two groups of hydraulic oil channels in the oil delivery block 5 are communicated with the two groups of hydraulic oil channels in the first flow guide block 6. The reversing valve 4 is adjusted to the left position, and the oil pump 2 is opened. Under the action of the oil pump 2, the flow direction of the hydraulic oil in the oil tank 1 is: the oil tank 1, the oil pump 2, the reversing valve 4, the oil delivery block 5, the first flow guide block 6, the first flow guide pipe 701, the shunt valve 702, the first oil cylinder 703. The hydraulic oil in the first oil cylinder 703 will be extruded out of the first oil cylinder 703, so that the flow direction of the hydraulic oil in the first oil cylinder 703 is: the first oil cylinder 703, the other group of shunt valves 702, the other group of first flow guide pipes 701, the first flow guide block 6, the oil delivery block 5, the reversing valve 4, the oil return pipe 13, and the oil tank 1. The hydraulic oil entering the first oil cylinder 703 will push the piston rod in the first oil cylinder 703 to move, realizing the lifting effect of the hydraulic outrigger.

[0029] Because the first oil cylinders 703 are connected with each other, the pressure transmitted to the inside of each group of first oil cylinders 703 is the same. When a group of first oil cylinders 703 first touches the ground, the shunt valve 702 will distribute the hydraulic oil to other first oil cylinders 703 under the action of pressure, so as to ensure that the pressure in the inside of each group of first oil cylinders 703 is the same, and then the first oil cylinders 703 can adapt to different ground shapes.

[0030] When it is needed to drive only a certain first oil cylinder 703 to ascend or descend, the stop valve 704 corresponding to the group of first oil cylinders 703 can be opened, and other stop valves 704 can be closed, so that the hydraulic oil only flows in the inside of the group of first oil cylinders 703, and the hydraulic oil in the inside of other first oil cylinders 703 is blocked in the flow channel, thereby realizing the effect of separate lifting.

[0031] When it is needed to push the lifting tower to rise, the oil delivery block 5 is adjusted to be connected with a set of second flow guide blocks 9, so that the two sets of hydraulic oil channels inside the oil delivery block 5 are connected with the two sets of hydraulic oil channels inside the set of second flow guide blocks 9, and the oil pump 2 is opened. Under the action of the oil pump 2, the flow direction of the hydraulic oil inside the oil tank 1 is: the oil tank 1, the oil pump 2, the reversing valve 4, the oil delivery block 5, the second flow guide block 9, the second flow guide pipe 801, the flow and collection valve 802, the second oil cylinder 803, the hydraulic oil inside the second oil cylinder 803 is extruded out of the second oil cylinder 803, so that the flow direction of the hydraulic oil inside the second oil cylinder 803 is: the second oil cylinder 803, another set of flow and collection valves 802, another set of second flow guide pipes 801, the second flow guide block 9, the oil delivery block 5, the reversing valve 4, the oil return pipe 13, the oil tank 1, the flow and collection valve 802 can uniformly distribute the hydraulic oil into the sets of second oil cylinders 803 connected with each other, so as to realize the effect that the sets of second oil cylinders 803 rise at the same speed, thereby ensuring the stability during use, and one set of hydraulic lifting assembly 8 corresponds to one layer of lifting platform in the lifting tower, and through the control of multiple sets of such hydraulic lifting assemblies 8, the coordinated control of multiple layers of lifting platforms in the lifting tower can be realized.

[0032] When the lifting speed of the first oil cylinder 703 or the second oil cylinder 803 does not meet the actual demand, the flow rate of the hydraulic oil inside the first flow guide pipe 701 can be adjusted through the first throttle valve 705, and the flow rate of the hydraulic oil inside the second flow guide pipe 801 can be adjusted through the second throttle valve 804, so as to adjust the lifting speed of the first oil cylinder 703 and the second oil cylinder 803.

[0033] When the oil pressure inside the first oil delivery pipe 3 increases to a certain extent, the hydraulic oil will pass through the high-pressure overflow valve 10 along the second oil delivery pipe 12, at this time, the hydraulic oil enters the oil return pipe 13 from the inside of the first oil delivery pipe 3, and finally directly flows into the inside of the oil tank 1, thereby avoiding the pipe from being cracked due to excessive oil pressure.

[0034] The above describes one embodiment of the utility model in detail, but the content described can only be the preferred embodiment of the utility model, and cannot be considered as limiting the implementation range of the utility model. Any equivalent changes and improvements made within the scope of the utility model application shall still belong to the patent coverage range of the utility model.

Claims

1. A hydraulic system for jacking up a tower at a constant speed, comprising an oil delivery assembly, the oil delivery assembly comprising an oil tank (1) and a reversing valve (4), the oil tank (1) being connected with an oil pump (2) through a pipeline, the oil tank (1) being fixedly connected with an oil return pipeline (13), the reversing valve (4) being provided with two groups of input interfaces and two groups of output interfaces, the output ends of the oil pump (2) and the oil return pipeline (13) being respectively connected with the two groups of input interfaces of the reversing valve (4), characterized in that Also include: Hydraulic support assembly (7) for maintaining the stability of the overall device, hydraulic lifting assembly (8) for pushing the lifting tower to lift, the first flow guide block (6) matched with the hydraulic support assembly (7) and the second flow guide block (9) matched with the hydraulic lifting assembly (8), the hydraulic lifting assembly (8) and the second flow guide block (9) are matched with multiple groups, and the two output interfaces of the reversing valve (4) are connected with the oil delivery block (5) matched with the first flow guide block (6) and the second flow guide block (9) through pipelines.

2. A hydraulic jacking system for a tower according to claim 1, wherein, The hydraulic support assembly (7) includes two groups of first flow guide pipes (701) connected with the first flow guide block (6), and each group of the first flow guide pipes (701) is fixedly connected with a shunt valve (702) at the other end, and each group of the shunt valve (702) is provided with a plurality of first shunt interfaces, each group of the first shunt interface is connected with a group of first oil cylinder (703) through pipeline, each group of the first oil cylinder (703) is provided with two groups of first oil pipe interfaces, each group of the first oil pipe interface is communicated with the corresponding first shunt interface through pipeline, and each group of the first oil cylinder (703) is respectively connected with two groups of shunt valves (702) through two groups of first oil pipe interfaces.

3. A hydraulic jacking system for a tower according to claim 2, wherein A group of the shunt valve (702) is matched with a plurality of stop valves (704), and each group of the stop valve (704) is arranged on the pipeline between the first oil pipe interface and the first shunt interface.

4. A hydraulic jacking system for a tower according to claim 3, wherein, Each group of the hydraulic lifting assembly (8) includes two groups of second flow guide pipes (801) connected with the corresponding second flow guide block (9), and each group of the second flow guide pipe (801) is fixedly connected with a shunt collector valve (802) at the other end, and each group of the shunt collector valve (802) is provided with a plurality of second shunt interfaces, each group of the second shunt interface is connected with a second oil cylinder (803) through pipeline, each group of the second oil cylinder (803) is provided with two groups of second oil pipe interfaces, each group of the second oil pipe interface is communicated with the corresponding second shunt interface through pipeline, and each group of the second oil cylinder (803) is respectively connected with two groups of shunt collector valves (802) through two groups of second oil pipe interfaces.

5. A hydraulic jacking system for a tower according to claim 4, wherein, The first flow guide pipe (701) is matched with a first throttle valve (705), and the second flow guide pipe (801) is matched with a second throttle valve (804).

6. A hydraulic jacking system for a tower according to claim 1, wherein The reversing valve (4) and the oil pump (2) are fixedly connected with a first oil delivery pipe (3), the first oil delivery pipe (3) and the oil return pipe (13) are fixedly connected with a second oil delivery pipe (12), and the second oil delivery pipe (12) is matched with a high-pressure overflow valve (10).

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