Auxiliary pump pressure stabilizing device of directional drilling machine for coal mine and directional drilling machine for coal mine

Abstract

The utility model provides an auxiliary pump pressure stabilizing device of a directional drilling machine for a coal mine and the directional drilling machine for the coal mine, and belongs to the technical field of drilling machines. An oil outlet of an auxiliary pump is respectively connected with an oil inlet of a filter and an oil inlet of an overflow valve, and the filter is used for filtering hydraulic oil pumped to a hydraulic execution element control valve group; therefore, impurities in the hydraulic oil can be removed, and damage of the impurities to a hydraulic execution element control valve set, a hydraulic execution element and a pipeline is reduced. The overflow valve is connected to an oil outlet of the auxiliary pump in a bypass mode to guarantee that the pressure of hydraulic oil pumped by the auxiliary pump is constant, a hydraulic execution element connected with the auxiliary pump operates stably, and the overflow valve is controlled through a feedback port of the auxiliary pump or remote control. The two are matched with each other, so that the service life of the hydraulic control system is prolonged; and the auxiliary pump pressure stabilizing device of the directional drilling machine for the coal mine is simple and portable and facilitates underground replacement operation.

Description

Technical Field

[0001] The utility model belongs to the technical field of drilling machines, and specifically discloses an auxiliary pump pressure stabilizing device for a directional drilling machine for a coal mine and a directional drilling machine for a coal mine. Background Art

[0002] Directional drilling rigs play an important role in directional drilling in coal mining. Due to the harsh, complex and changeable coal mining environment, high requirements are placed on the performance of directional drilling rigs.

[0003] CN112483492A applied by the applicant is a directional drill for coal mines, which can realize multiple functions such as walking, supporting, drilling, etc. During use, the following problems were found to be needed to be improved:

[0004] 1. Hydraulic oil is recycled in the hydraulic control system. When it flows through various hydraulic actuators, hydraulic actuator control valve groups and pipelines, it will bring in impurities. The oil circuits provided by the auxiliary pump for hydraulic oil are numerous and complex, and are greatly affected by impurities.

[0005] 2. After the auxiliary pump is started, the power can reach three-quarters of the rated power, resulting in unstable operation of the auxiliary pump and affecting the operating state of the hydraulic actuator connected to the auxiliary pump. Utility Model Content

[0006] The utility model provides a directional drilling rig auxiliary pump pressure stabilizing device for a coal mine and a directional drilling rig for a coal mine, which overcome the technical problems mentioned in the background technology.

[0007] The utility model provides a pressure stabilizing device for an auxiliary pump of a directional drilling rig for a coal mine, comprising a filter and a relief valve; the oil inlet of the filter is used to be connected with the oil outlet of the auxiliary pump, and the oil outlet is used to be connected with the oil inlet of a hydraulic actuator control valve group; the oil inlet of the relief valve is connected between the filter and the auxiliary pump, the overflow port is used to be connected with the oil return port of the hydraulic oil tank, and the feedback port is used to be connected with the feedback port of the auxiliary pump or to be remotely regulated.

[0008] The above-mentioned auxiliary pump pressure stabilizing device for directional drilling rigs for coal mines also includes a valve block; the filter and the overflow valve are both installed on the valve block; the valve block is provided with interface I, interface II, interface III, interface IV and interface V, interface I corresponds to the oil inlet of the filter, interface II corresponds to the oil outlet of the filter, interface III corresponds to the oil inlet of the overflow valve, interface IV corresponds to the overflow port of the overflow valve, and interface V corresponds to the feedback port of the overflow valve.

[0009] The utility model also provides a directional drilling rig for coal mines, comprising an auxiliary pump, a hydraulic actuator control valve group, a hydraulic oil tank and the auxiliary pump pressure stabilizing device for the directional drilling rig for coal mines; the oil inlet of the auxiliary pump is connected to the hydraulic oil tank, and the oil outlet is connected to the oil inlet of the filter.

[0010] In the above directional drill for coal mines, the control valve group of the hydraulic actuator includes the travel valve group and the control valve in the operation console; the oil inlets of the filters are respectively connected to the oil inlets of the travel valve group and the operation console.

[0011] The above directional drill for coal mines further includes an electric motor; the electric motor is connected to the auxiliary pump and is used to drive the auxiliary pump to operate.

[0012] Compared with the prior art, the present utility model has the following beneficial effects.

[0013] In the present utility model, the oil outlet of the auxiliary pump is respectively connected to the oil inlets of the filter and the overflow valve. The filter filters the hydraulic oil pumped to the control valve group of the hydraulic actuator to remove impurities in the hydraulic oil, reducing the damage caused by impurities to the control valve group of the hydraulic actuator, the hydraulic actuator and the pipeline; the overflow valve is connected in parallel to the oil outlet of the auxiliary pump to ensure a constant pressure of the hydraulic oil pumped by the auxiliary pump, enabling the hydraulic actuator connected to the auxiliary pump to operate stably, and the overflow valve is controlled through the feedback port of the auxiliary pump or through remote control. The two cooperate with each other, extending the service life of the hydraulic control system; moreover, the voltage stabilizing device for the auxiliary pump of the directional drill for coal mines is simple and portable, facilitating replacement operation underground. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 is the hydraulic schematic diagram of the voltage stabilizing device for the auxiliary pump of the directional drill for coal mines;

[0016] Figure 2 is the external view of the voltage stabilizing device for the auxiliary pump of the directional drill for coal mines.

[0017] In the figure: 1 - filter; 2 - overflow valve; 3 - valve block; 3.1 - interface Ⅰ; 3.2 - interface Ⅱ; 3.3 - interface Ⅲ; 3.4 - interface Ⅳ; 3.5 - interface Ⅴ; 101 - auxiliary pump; 102 - hydraulic oil tank. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following will clearly and completely describe the technical solutions of the present utility model with reference to the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present utility model fall within the protection scope of the present utility model.

[0019] Embodiment 1

[0020] This embodiment provides a pressure stabilizing device for the auxiliary pump of a coal mine directional drill, including a filter 1 and a relief valve 2; the oil inlet of the filter 1 is used to connect with the oil outlet of the auxiliary pump 101, and the oil outlet is used to connect with the oil inlet of the control valve group of the hydraulic actuator; the oil inlet of the relief valve 2 is connected between the filter 1 and the auxiliary pump 101, the oil return port is used to connect with the oil return port of the hydraulic oil tank 102, and the feedback port is used to connect with the feedback port of the auxiliary pump 101 or be remotely regulated.

[0021] The above pressure stabilizing device for the auxiliary pump of a coal mine directional drill further includes a valve block 3; both the filter 1 and the relief valve 2 are installed on the valve block 3; the valve block 3 is provided with an interface I 3.1, an interface II 3.2, an interface III 3.3, an interface IV 3.4 and an interface V 3.5. The interface I 3.1 corresponds to the oil inlet of the filter 1, the interface II 3.2 corresponds to the oil outlet of the filter 1, the interface III 3.3 corresponds to the oil inlet of the relief valve 2, the interface IV 3.4 corresponds to the oil return port of the relief valve 2, and the interface V 3.5 corresponds to the feedback port of the relief valve 2.

[0022] The above pressure stabilizing device for the auxiliary pump of a coal mine directional drill connects the oil outlet of the auxiliary pump 101 to the oil inlet of the filter 1 and the oil inlet of the relief valve 2 respectively. The filter 1 filters the hydraulic oil pumped to the control valve group of the hydraulic actuator to remove impurities in the hydraulic oil and reduce the damage caused by impurities to the control valve group of the hydraulic actuator, the hydraulic actuator and the pipeline; the relief valve 2 is connected in parallel to the oil outlet of the auxiliary pump 101 to ensure that the pressure of the hydraulic oil pumped by the auxiliary pump 101 is constant, so that the hydraulic actuator connected to the auxiliary pump 101 operates stably, and the relief valve 2 is controlled through the feedback port of the auxiliary pump 101 or through remote regulation. The two cooperate with each other to extend the service life of the hydraulic control system; and the pressure stabilizing device for the auxiliary pump of a coal mine directional drill is simple and portable, facilitating replacement operations underground.

[0023] Embodiment 2

[0024] This embodiment provides a coal mine directional drill, the specific structure of which is as shown in CN112483492A, a coal mine directional drill, including an auxiliary pump 101, a control valve group of the hydraulic actuator, a hydraulic oil tank 102 and the above pressure stabilizing device for the auxiliary pump of a coal mine directional drill; the oil inlet of the auxiliary pump 101 is connected to the hydraulic oil tank 102, and the oil outlet is connected to the oil inlet of the filter 1.

[0025] In the above coal mine directional drill, the control valve group of the hydraulic actuator includes a traveling valve group and a control valve for reversing in the operation console; the oil inlet of the filter 1 is connected to the oil inlet of the traveling valve group and the oil inlet of the operation console respectively.

[0026] The above-mentioned directional drill for coal mines further includes a motor; the motor is connected to the auxiliary pump 101 and is used to drive the auxiliary pump 101 to operate.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A directional drilling rig auxiliary pump pressure stabilizing device for coal mines, characterized in that: Includes filter and relief valve; The oil inlet of the filter is used to connect with the oil outlet of the auxiliary pump, and the oil outlet is used to connect with the oil inlet of the hydraulic actuator control valve group; The oil inlet of the overflow valve is connected between the filter and the auxiliary pump, the overflow port is used to connect with the oil return port of the hydraulic oil tank, and the feedback port is used to connect with the feedback port of the auxiliary pump or be remotely controlled.

2. The auxiliary pump pressure stabilizing device for directional drilling rig for coal mine according to claim 1, characterized in that: Also includes a valve block; The filter and the overflow valve are both installed on the valve block; The valve block is provided with interface I, interface II, interface III, interface IV and interface V, interface I corresponds to the oil inlet of the filter, interface II corresponds to the oil outlet of the filter, interface III corresponds to the oil inlet of the overflow valve, interface IV corresponds to the overflow port of the overflow valve, and interface V corresponds to the feedback port of the overflow valve.

3. A directional drilling rig for coal mines, comprising an auxiliary pump, a hydraulic actuator control valve group and a hydraulic oil tank, characterized in that: It also includes the auxiliary pump pressure stabilizing device for a directional drilling rig for a coal mine as claimed in claim 1 or 2; The oil inlet of the auxiliary pump is connected to the hydraulic oil tank, and the oil outlet is connected to the oil inlet of the filter.

4. The directional drilling machine for coal mine according to claim 3, characterized in that: The hydraulic actuator control valve group includes a travel valve group and an operating table reversing valve in the operating table; The oil inlet of the filter is connected to the oil inlet of the travel valve group and the oil inlet of the operating table respectively.

5. The directional drilling machine for coal mine according to claim 4, characterized in that: Also includes motors; The motor is connected to the auxiliary pump and is used to drive the auxiliary pump to operate.

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