Hydraulic control valve

Abstract

The utility model relates to the technical field of hydraulic valves, in particular to a hydraulic control valve which comprises a hydraulic control valve body, an oil outlet end and an oil inlet end are fixedly arranged at the top of the hydraulic control valve body in a spaced mode, and an oil return end and an oil supply end are fixedly arranged on the side portion of the hydraulic control valve body in a spaced mode. The oil outlet end, the oil inlet end, the oil return end and the oil supply end are fixedly communicated with rotary joints, the rotary joints are rotatably communicated with hollow pipe shafts, one end of each hollow pipe shaft is fixedly communicated with a bent pipe oil port, and the side parts of the oil outlet end, the oil inlet end, the oil return end and the oil supply end are fixedly connected with side seats; according to the hydraulic control valve, all elbow pipe oil ports can be conveniently in butt joint and communicated with corresponding pipelines, the convenience when the hydraulic control valve is in butt joint and communicated with all the pipelines is improved, and the application effect of the hydraulic control valve can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic valves, in particular to a hydraulic control valve. Background Art

[0002] The function of the hydraulic control valve (referred to as hydraulic valve) in the hydraulic system is to control and adjust the flow direction, pressure and flow rate of the oil in the hydraulic system so that the actuator and the working mechanism it drives can obtain the required movement direction, thrust (torque) and movement speed (rotation speed), etc. Any hydraulic system, no matter how simple it is, cannot lack a hydraulic control valve. Hydraulic mechanical equipment with the same process purpose can form a variety of hydraulic system solutions with completely different oil circuit structures through the use of different combinations of hydraulic control valves. The hydraulic control valve needs to be connected with multiple pipelines during use and installation. The oil supply port and oil return port on the hydraulic control valve are connected to the oil pump and the oil tank respectively, and the oil inlet and oil outlet on the hydraulic control valve are connected to the hydraulic cylinder. Since the orientation positions of the various oil ports on the existing hydraulic control valve are fixed, it is impossible to adjust the orientation of each oil port according to the actual pipeline docking and connection working conditions, which is easy to cause inconvenience when the hydraulic control valve is connected with each pipeline, affecting the applicability of the hydraulic control valve. Therefore, we propose a hydraulic control valve to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to provide a hydraulic control valve to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A hydraulic control valve comprises a hydraulic control valve body, the top of the hydraulic control valve body is fixedly provided with an oil outlet end and an oil inlet end at intervals, the side of the hydraulic control valve body is fixedly provided with an oil return end and an oil supply end at intervals, the oil outlet end, the oil inlet end, the oil return end and the oil supply end are all fixedly connected with a rotary joint, the rotary joint is rotatably connected with a hollow pipe shaft, one end of the hollow pipe shaft is fixedly connected with a bent pipe oil port, the sides of the oil outlet end, the oil inlet end, the oil return end and the oil supply end are all fixedly connected with side seats, the outer fixed sleeve of the rotary joint is connected with a limiting sleeve, the side of the limiting sleeve is spaced apart with a plurality of limiting grooves, the side of the side seat is threadedly connected with a limiting stud, the inner end face of the limiting stud is fixedly connected with a cylindrical boss, and the cylindrical boss is adapted to the limiting groove.

[0006] Preferably, the cross-sectional shape of the limiting sleeve is annular, and the limiting grooves are circular and equidistantly distributed on the side surface of the limiting sleeve.

[0007] Preferably, one end of the elbow oil port is fixedly connected to an oil guide joint.

[0008] Preferably, the outer end surface of the limiting stud is fixedly connected with a knob block, and the cross-sectional shape of the knob block is a regular hexagon.

[0009] Preferably, the end of the hydraulic control valve body is fixedly connected to a mounting seat, and assembly holes are provided at the end corners of the surface of the mounting seat.

[0010] Preferably, a reinforcement rib is fixedly connected between the hydraulic control valve body and the mounting seat, and the cross-sectional shape of the reinforcement rib is rectangular.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model rotates the hollow pipe axis at one end of the elbow oil port along the rotary joint on the hydraulic control valve body according to the actual pipeline docking and connection working conditions, until the elbow oil port is adjusted to the required direction position, and uses the knob block to screw and rotate the limit stud on the side seat so that the limit stud moves toward the limit sleeve until the cylindrical protrusion is engaged and inserted into the corresponding limit groove on the side of the limit sleeve, so that the elbow oil port can be limited and locked, which is convenient for adjusting the direction position of the elbow oil port, meeting the different actual pipeline docking and connection working conditions, and facilitating the docking and connection of each elbow oil port with the corresponding pipeline, thereby improving the convenience of docking and connection between the hydraulic control valve and each pipeline, and being conducive to improving the applicability of the hydraulic control valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of a hydraulic control valve of the utility model;

[0014] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of part A;

[0015] Figure 3 This is a front view structural diagram of a hydraulic control valve of the utility model;

[0016] Figure 4 The utility model is a schematic diagram of the side structure of a hydraulic control valve.

[0017] In the figure: 1. hydraulic control valve body; 2. oil outlet; 3. oil inlet; 4. oil return; 5. oil supply; 6. elbow oil port; 601. oil guide joint; 7. rotary joint; 701. hollow pipe shaft; 702. limit sleeve; 703. limit groove; 8. side seat; 801. limit stud; 802. cylindrical boss; 803. knob block; 9. mounting seat; 901. assembly hole; 902. reinforcement rib. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-Figure 4 As shown, a technical solution provided by the utility model:

[0020] A hydraulic control valve comprises a hydraulic control valve body 1, wherein an oil outlet 2 and an oil inlet 3 are fixedly arranged at intervals on the top of the hydraulic control valve body 1, and an oil return end 4 and an oil supply end 5 are fixedly arranged at intervals on the side of the hydraulic control valve body 1, and a rotary joint 7 is fixedly connected to the oil outlet 2, the oil inlet 3, the oil return end 4 and the oil supply end 5, and a hollow pipe shaft 701 is rotatably connected to the rotary joint 7, and one end of the hollow pipe shaft 701 is fixedly connected to an elbow oil port 6, and the oil outlet 2, the oil inlet 3, the oil return end 4 and the oil supply end 5 are fixedly connected to each other. The sides of the ends 5 are fixedly connected with side seats 8, the outer fixed sleeve of the rotary joint 7 is connected with a limiting sleeve 702, and a plurality of limiting grooves 703 are spaced apart on the sides of the limiting sleeve 702. The side of the side seat 8 is threadedly connected with a limiting stud 801, and the inner end surface of the limiting stud 801 is fixedly connected with a cylindrical boss 802, which is adapted to the limiting groove 703, so that the cylindrical boss 802 can be inserted into the limiting groove 703, thereby being able to limit and lock the elbow oil port 6.

[0021] As a preferred implementation in this embodiment, Figure 2 As shown, the cross-sectional shape of the limiting sleeve 702 is annular, and the limiting grooves 703 are distributed on the side of the limiting sleeve 702 in a circular shape and at equal intervals.

[0022] As a preferred implementation in this embodiment, Figure 3 As shown, one end of the elbow oil port 6 is fixedly connected with an oil guide joint 601, so that each elbow oil port 6 can be connected to the corresponding pipeline.

[0023] As a preferred implementation in this embodiment, Figure 2 As shown, the outer end surface of the limiting stud 801 is fixedly connected with a knob block 803 , and the cross-sectional shape of the knob block 803 is a regular hexagon. The knob block 803 is used to facilitate the limiting stud 801 to be screwed and rotated on the side seat 8 .

[0024] As a preferred implementation in this embodiment, Figure 1 and Figure 4As shown, the end of the hydraulic control valve body 1 is fixedly connected with a mounting seat 9, and assembly holes 901 are provided at the surface corners of the mounting seat 9, so that the hydraulic control valve body 1 can be fixedly installed.

[0025] As a preferred implementation in this embodiment, Figure 4 As shown, a reinforcing rib 902 is fixedly connected between the hydraulic control valve body 1 and the mounting seat 9 . The cross-sectional shape of the reinforcing rib 902 is rectangular, thereby achieving the purpose of ensuring the structural strength of the connection between the hydraulic control valve body 1 and the mounting seat 9 .

[0026] Working principle:

[0027] During the use of the hydraulic control valve, according to the actual pipeline docking and connection working conditions, if it is necessary to adjust the direction of the elbow oil port 6, the hollow pipe shaft 701 at one end of the elbow oil port 6 is rotated along the rotary joint 7 on the hydraulic control valve body 1 until the elbow oil port 6 is adjusted to the required direction, and the knob block 803 is used to screw the limit stud 801 on the side seat 8 to move the limit stud 801 toward the limit sleeve 702 until the cylindrical boss 802 is engaged and inserted into the corresponding limit groove 703 on the side of the limit sleeve 702, so that the elbow oil port 6 can be limited and locked, and each elbow oil port 6 can be conveniently docked and connected with the corresponding pipeline, thereby improving the convenience of docking and connecting the hydraulic control valve with each pipeline.

[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A hydraulic control valve, comprising a hydraulic control valve body (1), wherein an oil outlet end (2) and an oil inlet end (3) are fixedly arranged at intervals on the top of the hydraulic control valve body (1), and an oil return end (4) and an oil supply end (5) are fixedly arranged at intervals on the side of the hydraulic control valve body (1), characterized in that: The oil outlet (2), the oil inlet (3), the oil return (4) and the oil supply (5) are all fixedly connected with a rotary joint (7), the rotary joint (7) is rotatably connected with a hollow pipe shaft (701), one end of the hollow pipe shaft (701) is fixedly connected with a bent pipe oil port (6), the sides of the oil outlet (2), the oil inlet (3), the oil return (4) and the oil supply (5) are all fixedly connected with a side seat (8), the outer part of the rotary joint (7) is fixedly sleeved with a limiting sleeve (702), the side of the limiting sleeve (702) is spaced apart with a plurality of limiting grooves (703), the side of the side seat (8) is threadedly connected with a limiting stud (801), the inner end surface of the limiting stud (801) is fixedly connected with a cylindrical boss (802), and the cylindrical boss (802) is matched with the limiting groove (703).

2. A hydraulic control valve according to claim 1, characterized in that: The cross-sectional shape of the limiting sleeve (702) is annular, and the limiting grooves (703) are distributed on the side of the limiting sleeve (702) in a circular shape and at equal intervals.

3. A hydraulic control valve according to claim 1, characterized in that: One end of the elbow oil port (6) is fixedly connected to an oil guide joint (601).

4. A hydraulic control valve according to claim 1, characterized in that: The outer end surface of the limiting stud (801) is fixedly connected to a knob block (803), and the cross-sectional shape of the knob block (803) is a regular hexagon.

5. A hydraulic control valve according to claim 1, characterized in that: The end of the hydraulic control valve body (1) is fixedly connected to a mounting seat (9), and the surface corners of the mounting seat (9) are provided with assembly holes (901).

6. A hydraulic control valve according to claim 5, characterized in that: A reinforcing rib (902) is fixedly connected between the hydraulic control valve body (1) and the mounting seat (9), and the cross-sectional shape of the reinforcing rib (902) is rectangular.

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