Hydraulic oil way structure for derrick

Abstract

The utility model discloses a hydraulic oil circuit structure for a derrick, which comprises an oil tank oil outlet pipe, an oil tank oil return pipe, an oil pump oil outlet pipe, a centralized control valve group, a first working oil pipe, a second working oil pipe, a synchronous shunting piece, a first output oil pipe and a second output oil pipe, hydraulic oil in an oil tank is output to a centralized control valve group through an oil tank oil outlet pipe, a hydraulic pump and an oil pump oil outlet pipe, the centralized control valve group outputs the hydraulic oil to a synchronous shunting part through a first working oil pipe, and the synchronous shunting part equally divides the input hydraulic oil into two paths and outputs the two paths to a first output oil pipe and a second output oil pipe; the first output oil pipe and the second output oil pipe are used for connecting oil inlets of the two derricks, the second working oil pipe is connected with oil return ports of the two derricks and the centralized control valve group, and the centralized control valve group is connected with the oil tank through the oil tank oil return pipe. The hydraulic oil circuit structure is simple in connection relation and low in cost, synchronous control over the two holding poles can be achieved through one centralized control valve set, and the synchronous precision is high.

Description

Technical Field

[0001] The utility model relates to the technical field of pole holding, in particular to a hydraulic oil circuit structure used for a pole holding. Background Art

[0002] The holding pole is a commonly used lifting equipment in the process of assembling a large communication tower. Usually, the tower is divided into multiple assembly units, and two holding poles form a group. The two holding poles are supported on both sides of the assembly unit, and then the multiple assembly units are lifted up in turn through the holding poles on both sides, and the adjacent assembly units are spliced ​​to complete the assembly of the entire communication tower. In the existing technology, the two holding poles in the same group are driven by two driving devices respectively, and the control of the holding poles is also controlled by two handles. Therefore, the hydraulic oil circuit connection in the existing technology is complicated, the cost is high, and it is difficult for workers to achieve precise synchronization when operating the two handles, and the synchronization accuracy is low. Utility Model Content

[0003] The main technical problem solved by the utility model is to provide a hydraulic oil circuit structure for a holding pole, so as to solve the problems of complex hydraulic oil circuit connection, high cost and low synchronization precision in the prior art.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is to provide a hydraulic oil circuit structure for a boom, including an oil tank outlet pipe, an oil tank return pipe, an oil pump outlet pipe, a centralized control valve group, a first working oil pipe, a second working oil pipe, a synchronous flow divider, a first output oil pipe and a second output oil pipe. The oil tank outlet pipe is used to connect the oil outlet of the oil tank with the oil inlet of the hydraulic pump, the oil pump outlet pipe connects the oil outlet of the hydraulic pump with the oil inlet of the centralized control valve group, and the oil tank return pipe connects the oil return port of the oil tank and the oil return port of the centralized control valve group. ; The first working oil pipe is connected to the first working oil port of the centralized control valve group and the oil inlet of the synchronous diverter, the synchronous diverter is used to divide the input hydraulic oil into two paths and output them synchronously, the first ends of the first output oil pipe and the second output oil pipe are respectively connected to the first oil outlet and the second oil outlet of the synchronous diverter, the second ends of the first output oil pipe and the second output oil pipe are used to connect the oil inlets of the two holding poles; the first end of the second working oil pipe is connected to the second working oil port of the centralized control valve group, and the second end of the second working oil pipe is used to connect the return oil ports of the two holding poles.

[0005] In some embodiments, the hydraulic oil circuit structure also includes a first regulating valve, a second regulating valve, a first control oil pipe, a second control oil pipe, a third control oil pipe, a fourth control oil pipe, a first three-way valve, a second three-way valve, a first oil supply pipe and a second oil supply pipe. The first working oil pipe connects the first working oil port of the centralized control valve group and the oil inlet of the first regulating valve, the first control oil pipe connects the first oil outlet of the first regulating valve and the oil inlet of the second regulating valve, the second control oil pipe connects the second oil outlet of the first regulating valve and the oil inlet of the synchronous diverter, the third control oil pipe connects the first oil outlet of the second regulating valve and the first three-way valve, the first three-way valve is also connected to the second end of the first output oil pipe and the first oil supply pipe, the fourth control oil pipe connects the second oil outlet of the second regulating valve and the second three-way valve, the second three-way valve is also connected to the second end of the second output oil pipe and the second oil supply pipe, and the first oil supply pipe and the second oil supply pipe are respectively used to connect the oil inlets of the two holding poles.

[0006] In some embodiments, the hydraulic oil circuit structure also includes a third three-way valve, a first oil return pipe and a second oil return pipe. The second end of the second working oil pipe is connected to the third three-way valve, and the third three-way valve is also connected to the first oil return pipe and the second oil return pipe. The first oil return pipe and the second oil return pipe are respectively used to connect the oil return ports of the two holding poles.

[0007] In some embodiments, a first balancing valve is disposed on the first oil supply pipe, and the first balancing valve is also connected to the oil circuit of the first oil return pipe. A second balancing valve is disposed on the second oil supply pipe, and the second balancing valve is also connected to the oil circuit of the second oil return pipe.

[0008] In some embodiments, a pressure compensation valve is further connected between the first oil output pipe and the second oil output pipe, and the pressure compensation valve is used to balance the pressure difference between the first oil output pipe and the second oil output pipe.

[0009] In some embodiments, the synchronous splitter is a gear-type synchronous splitter motor.

[0010] In some embodiments, the hydraulic oil circuit structure further includes an oil drain pipe, which is respectively connected to an oil drain port of the oil tank and an oil drain port of the centralized control valve group.

[0011] In some embodiments, an oil return filter is also provided on the oil return pipe of the oil tank, and the oil return filter is used to filter the hydraulic oil entering the oil tank.

[0012] The beneficial effects of the utility model are as follows: in the utility model, the hydraulic oil in the oil tank is output to the centralized control valve group through the oil tank outlet pipe, the hydraulic pump and the oil pump outlet pipe, the centralized control valve group outputs the hydraulic oil to the synchronous flow divider through the first working oil pipe, the synchronous flow divider divides the input hydraulic oil into two paths and outputs them to the first output oil pipe and the second output oil pipe, the first output oil pipe and the second output oil pipe are used to connect the oil inlets of the two holding poles, the second working oil pipe connects the oil return ports of the two holding poles and the centralized control valve group, and the centralized control valve group is connected to the oil tank through the oil tank return pipe, thereby forming a complete hydraulic oil circuit structure. In the hydraulic oil circuit structure, the synchronous control of the two holding poles can be achieved through a centralized control valve group, the synchronization accuracy is high, the connection relationship is simple, and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0014] Figure 2 yes Figure 1 The enlarged view of point A in the middle;

[0015] Figure 3 yes Figure 1 The enlarged view of point B in the middle;

[0016] Figure 4 yes Figure 1 Enlarged view of point C in the middle. DETAILED DESCRIPTION

[0017] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0018] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0019] Figure 1-Figure 4The utility model shows an embodiment of the hydraulic oil circuit structure for a boom, including a tank oil outlet pipe 1, a tank oil return pipe 2, an oil pump oil outlet pipe 3, a centralized control valve group 4, a first working oil pipe 5, a second working oil pipe 6, a synchronous flow divider 7, a first output oil pipe 8 and a second output oil pipe 9. The tank oil outlet pipe 1 is used to connect the oil outlet 201 of the tank 20 and the oil inlet of the hydraulic pump 10, the oil pump oil outlet pipe 3 connects the oil outlet of the hydraulic pump 10 and the oil inlet 41 of the centralized control valve group 4, and the tank return pipe 2 connects the oil return port 202 of the tank 20 and the oil return port 42 of the centralized control valve group 4; the first working oil pipe 5 The first working oil port 43 of the centralized control valve group 4 and the oil inlet 71 of the synchronous diverter 7 are connected. The synchronous diverter 7 is used to divide the input hydraulic oil into two paths and output them synchronously. The first ends of the first output oil pipe 8 and the second output oil pipe 9 are respectively connected to the first oil outlet 72 and the second oil outlet 73 of the synchronous diverter 7. The second ends of the first output oil pipe 8 and the second output oil pipe 9 are used to connect the oil inlet 301 of the two holding rods 30; the first end of the second working oil pipe 6 is connected to the second working oil port 44 of the centralized control valve group 4, and the second end of the second working oil pipe 6 is used to connect the return oil port 302 of the two holding rods 30.

[0020] In the utility model, the hydraulic oil in the oil tank 20 is output to the centralized control valve group 4 through the oil tank outlet pipe 1, the hydraulic pump 10 and the oil pump outlet pipe 3. The centralized control valve group 4 outputs the hydraulic oil to the synchronous flow divider 7 through the first working oil pipe 5. The synchronous flow divider 7 divides the input hydraulic oil into two paths and outputs them to the first output oil pipe 8 and the second output oil pipe 9. The first output oil pipe 8 and the second output oil pipe 9 are used to connect the oil inlet 301 of the two holding poles 30. The second working oil pipe 6 connects the oil return port 302 of the two holding poles 30 and the centralized control valve group 4. The centralized control valve group 4 is connected to the oil tank 20 through the oil tank return pipe 2, thereby forming a complete hydraulic oil circuit structure. In the hydraulic oil circuit structure, the synchronous control of the two holding poles 30 can be achieved through a centralized control valve group 4, the synchronization accuracy is high, the connection relationship is simple, and the cost is low.

[0021] In some embodiments, in combination Figure 2-Figure 4As shown, the hydraulic oil circuit structure also includes a first regulating valve 40, a second regulating valve 50, a first control oil pipe 404, a second control oil pipe 405, a third control oil pipe 504, a fourth control oil pipe 505, a first three-way valve 60, a second three-way valve 70, a first oil supply pipe 80 and a second oil supply pipe 90. The first working oil pipe 5 connects the first working oil port 43 of the centralized control valve group 4 and the oil inlet 401 of the first regulating valve 40, the first control oil pipe 404 connects the first oil outlet 402 of the first regulating valve 40 and the oil inlet 501 of the second regulating valve 50, and the second control oil pipe 405 connects the first working oil port 43 of the centralized control valve group 4 and the oil inlet 401 of the first regulating valve 40. A second oil outlet 403 of a regulating valve 40 and an oil inlet 71 of a synchronous diverter 7, a third control oil pipe 504 connects the first oil outlet 502 of the second regulating valve 50 and the first three-way valve 60, the first three-way valve 60 is also connected to the second end of the first output oil pipe 8 and the first oil supply pipe 80, a fourth control oil pipe 505 connects the second oil outlet 503 of the second regulating valve 50 and the second three-way valve 70, the second three-way valve 70 is also connected to the second end of the second output oil pipe 9 and the second oil supply pipe 90, the first oil supply pipe 80 and the second oil supply pipe 90 are respectively used to connect the oil inlets 301 of the two holding poles 30.

[0022] The first control valve 40 and the second control valve 50 are both solenoid valves. The first control valve 40 is used to switch the synchronous working state and the independent working state of the holding pole 30, and the second control valve 50 is used to switch the oil circuit to the side where the independent working holding pole 30 is located. When the first regulating valve 40 is switched to the synchronous working state, the hydraulic oil entering the first regulating valve 40 from the first working oil pipe 5 directly enters the synchronous diverter 7 through the second control oil pipe 405, and the synchronous diverter 7 divides the hydraulic oil evenly and outputs it synchronously to the two holding booms 30, driving the two holding booms 30 to move synchronously; when the first regulating valve 40 is switched to the single working state, the hydraulic oil entering the first regulating valve 40 from the first working oil pipe 5 is output to the second regulating valve 50 through the first control oil pipe 404, and the second regulating valve 50 can control the hydraulic oil to flow out only from one of the third control oil pipe 504 or the fourth control oil pipe 505, and the third control oil pipe 504 and the fourth control oil pipe 505 are respectively connected to the first oil supply pipe 80 and the second oil supply pipe 90, thereby realizing the driving of a single holding boom 30. The hydraulic oil circuit structure can not only realize synchronous control of the two holding poles 30, but also individually control a single holding pole 30 to fine-tune the height of the single holding pole 30, so that the two holding poles 30 always keep synchronization with higher synchronization accuracy.

[0023] In some embodiments, Figure 2 and Figure 4As shown, the hydraulic oil circuit structure also includes a third three-way valve 100, a first oil return pipe 110 and a second oil return pipe 120. The second end of the second working oil pipe 6 is connected to the third three-way valve 100. The third three-way valve 100 is also connected to the first oil return pipe 110 and the second oil return pipe 120. The first oil return pipe 110 and the second oil return pipe 120 are respectively used to connect the oil return ports 301 of the two holding poles 30. The first oil return pipe 110 and the second oil return pipe 120 are connected to the second end of the second working oil pipe 6 through the third three-way valve 100. The second working oil pipe 6 can transport the hydraulic oil in the first oil return pipe 110 and the second oil return pipe 120 to the centralized control valve group 4, eliminating redundant oil pipes, making the connection convenient and the cost lower.

[0024] In some embodiments, Figure 4 As shown, a first balancing valve 130 is provided on the first oil supply pipe 80, and the first balancing valve 130 is also connected to the oil circuit of the first oil return pipe 110. A second balancing valve 140 is provided on the second oil supply pipe 90, and the second balancing valve 140 is also connected to the oil circuit of the second oil return pipe 120. The first balancing valve 130 is used to balance the oil pressure inside the first oil supply pipe 80 and the first oil return pipe 110, and the second balancing valve 140 is used to balance the oil pressure inside the second oil supply pipe 90 and the second oil return pipe 120, so as to ensure the smooth operation of the boom 30 when the boom 30 is in a low pressure or out-of-control state.

[0025] In some embodiments, Figure 3 As shown, a pressure compensation valve 150 is also connected between the first oil output pipe 8 and the second oil output pipe 9. The pressure compensation valve 150 is used to balance the pressure difference between the first oil output pipe 8 and the second oil output pipe 9 so that the oil pressures of the first oil output pipe 8 and the second oil output pipe 9 remain the same.

[0026] In some embodiments, Figure 3 As shown, the synchronous flow splitter 7 is a gear-type synchronous flow splitter motor, which has high efficiency and low noise.

[0027] In some embodiments, Figure 2 As shown, the hydraulic oil circuit structure also includes an oil drain pipe 160, which is respectively connected to the oil drain port 203 of the oil tank 20 and the oil drain port 45 of the centralized control valve group 4. The excess internal leakage oil in the centralized control valve group 4 can be discharged to the oil tank 20 through the oil drain pipe 160 to ensure the stability of the oil pressure in the centralized control valve group 4.

[0028] In some embodiments, Figure 2 As shown, an oil return filter 170 is also provided on the oil tank return pipe 2. The oil return filter 170 is used to filter the hydraulic oil entering the oil tank 20 to prevent the hydraulic oil mixed with impurities from entering the oil tank 20 and polluting the hydraulic oil in the oil tank 20.

[0029] It can be seen that the utility model discloses a hydraulic oil circuit structure for a boom, wherein the hydraulic oil in the oil tank is output to the centralized control valve group through the oil tank outlet pipe, the hydraulic pump and the oil pump outlet pipe, and the centralized control valve group outputs the hydraulic oil to the synchronous flow divider through the first working oil pipe, and the synchronous flow divider divides the input hydraulic oil into two paths and outputs them to the first output oil pipe and the second output oil pipe, the first output oil pipe and the second output oil pipe are used to connect the oil inlets of the two booms, the second working oil pipe connects the oil return ports of the two booms and the centralized control valve group, and the centralized control valve group is connected to the oil tank through the oil tank return pipe, thereby forming a complete hydraulic oil circuit structure. In the hydraulic oil circuit structure, the synchronous control of the two booms can be achieved through a centralized control valve group, the synchronization accuracy is high, and the connection relationship is simple and the cost is low.

[0030] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A hydraulic oil circuit structure for a boom, characterized in that: It includes an oil tank outlet pipe, an oil tank return pipe, an oil pump outlet pipe, a centralized control valve group, a first working oil pipe, a second working oil pipe, a synchronous flow divider, a first output oil pipe and a second output oil pipe. The oil tank outlet pipe is used to connect the oil outlet of the oil tank and the oil inlet of the hydraulic pump, the oil pump outlet pipe connects the oil outlet of the hydraulic pump and the oil inlet of the centralized control valve group, and the oil tank return pipe connects the oil return port of the oil tank and the oil return port of the centralized control valve group; the first working oil pipe connects the first working oil port of the centralized control valve group and the oil inlet of the synchronous flow divider, and the synchronous flow divider is used to divide the input hydraulic oil into two paths and output them synchronously, the first ends of the first output oil pipe and the second output oil pipe are respectively connected to the first oil outlet and the second oil outlet of the synchronous flow divider, and the second ends of the first output oil pipe and the second output oil pipe are used to connect the oil inlets of the two holding poles; the first end of the second working oil pipe is connected to the second working oil port of the centralized control valve group, and the second end of the second working oil pipe is used to connect the oil return port of the two holding poles.

2. The hydraulic oil circuit structure for a pole holding device according to claim 1, characterized in that: The hydraulic oil circuit structure also includes a first regulating valve, a second regulating valve, a first control oil pipe, a second control oil pipe, a third control oil pipe, a fourth control oil pipe, a first three-way valve, a second three-way valve, a first oil supply pipe and a second oil supply pipe. The first working oil pipe connects the first working oil port of the centralized control valve group and the oil inlet of the first regulating valve, the first control oil pipe connects the first oil outlet of the first regulating valve and the oil inlet of the second regulating valve, the second control oil pipe connects the second oil outlet of the first regulating valve and the oil inlet of the synchronous flow divider, the third control oil pipe connects the first oil outlet of the second regulating valve and the first three-way valve, the first three-way valve is also connected to the second end of the first output oil pipe and the first oil supply pipe, the fourth control oil pipe connects the second oil outlet of the second regulating valve and the second three-way valve, the second three-way valve is also connected to the second end of the second output oil pipe and the second oil supply pipe, the first oil supply pipe and the second oil supply pipe are respectively used to connect the oil inlets of the two holding poles.

3. The hydraulic oil circuit structure for a pole holding device according to claim 2, characterized in that: The hydraulic oil circuit structure also includes a third three-way valve, a first oil return pipe and a second oil return pipe. The second end of the second working oil pipe is connected to the third three-way valve, and the third three-way valve is also connected to the first oil return pipe and the second oil return pipe. The first oil return pipe and the second oil return pipe are respectively used to connect the oil return ports of the two holding poles.

4. The hydraulic oil circuit structure for a pole holding device according to claim 3, characterized in that: The first oil supply pipe is provided with a first balancing valve, which is also connected to the oil circuit of the first oil return pipe. The second oil supply pipe is provided with a second balancing valve, which is also connected to the oil circuit of the second oil return pipe.

5. The hydraulic oil circuit structure for a pole holding device according to claim 1, characterized in that: A pressure compensation valve is further connected between the first oil output pipe and the second oil output pipe, and the pressure compensation valve is used to balance the pressure difference between the first oil output pipe and the second oil output pipe.

6. The hydraulic oil circuit structure for a pole holding device according to claim 1, characterized in that: The synchronous flow splitter is a gear-type synchronous flow splitter motor.

7. The hydraulic oil circuit structure according to claim 1, characterized in that: The hydraulic oil circuit structure also includes an oil drain pipe, which is respectively connected to the oil drain port of the oil tank and the oil drain port of the centralized control valve group.

8. The hydraulic oil circuit structure for a pole holding device according to claim 1, characterized in that: The oil return pipe of the oil tank is also provided with an oil return filter, and the oil return filter is used to filter the hydraulic oil entering the oil tank.

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