Constant pressure hydraulic propulsion unit

Abstract

The utility model discloses a kind of steady voltage hydraulic propulsion device including outer shell, end cover, output rod and propulsion mechanism, wherein, end cover is set on outer shell, output rod is movably connected in the inside of outer shell by propulsion mechanism, and it is set through end cover, and propulsion mechanism includes oil liquid delivery assembly, first drive assembly and propulsion block, wherein, propulsion block is movably connected in the inside of outer shell by first drive assembly, and is connected with output rod, and oil liquid delivery assembly is set on outer shell. Therefore, mechanical transmission and hydraulic pressure stabilizing structure are combined, internal pressure is dynamically balanced, vibration is effectively absorbed and isolated, and the stability and reliability of propulsion process are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of hydraulic propulsion devices, and in particular to a pressure-stabilized hydraulic propulsion device. Background Technology

[0002] A pressure-stabilized hydraulic propulsion system is a composite system combining hydraulic transmission and mechanical propulsion. Its core function is to maintain the stability of the output force during propulsion, while simultaneously buffering vibrations and improving motion smoothness through the circulation and regulation of hydraulic fluid. This type of device is widely used in heavy industrial environments such as mining, tunneling, and geological exploration.

[0003] In related technologies, existing pressure-stabilized hydraulic propulsion devices typically employ a structure where a hydraulic cylinder directly drives a piston rod. Their pressure-stabilizing function relies on a complex external hydraulic control system, such as an overflow valve or accumulator. In practical applications, this structure is prone to pressure fluctuations under sudden loads or high-frequency vibrations, leading to crawling or shaking of the output rod and poor propulsion stability. Simultaneously, vibrations are directly transmitted to the equipment's end via the rigid structure, affecting operational accuracy. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, the purpose of this utility model is to propose a pressure-stabilized hydraulic propulsion device that combines mechanical transmission and hydraulic pressure stabilization structure to dynamically balance internal pressure, effectively absorb and isolate vibration, and improve the stability and reliability of the propulsion process.

[0006] To achieve the above objectives, this utility model proposes a pressure-stabilized hydraulic propulsion device, comprising a housing, an end cap, an output rod, and a propulsion mechanism. The end cap is disposed on the housing, and the output rod is movably connected to the interior of the housing via the propulsion mechanism and penetrates the end cap. The propulsion mechanism includes an oil delivery assembly, a first drive assembly, and a propulsion block. The propulsion block is movably connected to the interior of the housing via the first drive assembly and is connected to the output rod. The oil delivery assembly is disposed on the housing.

[0007] In addition, the pressure-stabilized hydraulic propulsion device proposed above according to this utility model may also have the following additional technical features: Specifically, the first drive assembly includes a protective housing, a first drive device, a drive wheel, two symmetrically arranged driven wheels, and two ball screws. The protective housing is disposed on the outer shell and located away from the end cap. The drive wheel is rotatably connected to the protective housing via the first drive device. The two symmetrically arranged driven wheels are rotatably connected to the protective housing and mesh with the drive wheel. The two ball screws are rotatably connected to the outer shell and are connected to the driven wheels and the push block, respectively.

[0008] Specifically, the two ends of the propulsion block are provided with two sets of sealing rings.

[0009] Specifically, the oil delivery assembly includes an inlet pipe and an outlet pipe, wherein the inlet pipe is disposed on the outer shell and close to one end of the protective shell, and the outlet pipe is disposed on the outer shell and away from the end of the inlet pipe.

[0010] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects: The pressure-stabilized hydraulic propulsion device of this utility model adopts a drive structure with mechanical transmission as the main method and hydraulic pressure stabilization as the auxiliary method. It achieves precise mechanical propulsion through synchronous drive of double ball screws. At the same time, through the circulation input and discharge of oil on both sides of the propulsion block, the internal pressure is dynamically balanced, effectively absorbing and isolating vibration, and improving the stability and reliability of the propulsion process.

[0011] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0012] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which: Figure 1 This is a schematic diagram of the overall structure of the pressure-stabilized hydraulic propulsion device of this utility model; Figure 2 This is a schematic diagram of the internal structure of the pressure-stabilized hydraulic propulsion device of this utility model; Figure 3 This is a half-sectional view of the pressure-stabilized hydraulic propulsion device of this utility model.

[0013] As shown in the figure: 1. Outer shell; 2. End cap; 3. Output rod; 4. Propulsion mechanism; 41. Oil conveying assembly; 411. Inlet pipe; 412. Outlet pipe; 42. First drive assembly; 421. Protective shell; 422. First drive device; 423. Drive wheel; 424. Driven wheel; 425. Ball screw; 43. Propulsion block; 431. Sealing ring. Detailed Implementation

[0014] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. Rather, the embodiments of the present invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0015] The pressure-stabilized hydraulic propulsion device of this utility model embodiment will now be described with reference to the accompanying drawings.

[0016] like Figures 1-3 As shown, the pressure-stabilized hydraulic propulsion device of this utility model embodiment may include an outer shell 1, an end cap 2, an output rod 3, and a propulsion mechanism 4.

[0017] The end cap 2 is disposed on the outer shell 1, and the output rod 3 is movably connected to the inside of the outer shell 1 through the push mechanism 4 and is disposed through the end cap 2.

[0018] It should be noted that the end cap 2 proposed in this embodiment is connected to the outer shell 1 by bolts. At the same time, a mounting seat is provided on the side wall of the outer shell 1 away from the end cap 2 for connecting and fixing the outer shell 1. The output rod 3 is moved and adjusted by a pushing mechanism. Between the end cap 2 and the output rod 3, a dustproof ring, a dust scraping ring and a main seal are arranged sequentially from the outside to the inside to achieve the dustproof and sealing function of the output rod 3.

[0019] The propulsion mechanism 4 includes an oil delivery assembly 41, a first drive assembly 42, and a propulsion block 43.

[0020] The propulsion block 43 is movably connected to the inside of the outer casing 1 through the first drive assembly 42 and is connected to the output rod 3. The oil delivery assembly 41 is disposed on the outer casing 1.

[0021] It should be noted that the propulsion block 43 proposed in the above embodiment is mainly driven by the first drive component 42, and moves and adjusts along the axial direction of the outer shell 1, driving the output rod 3 to move synchronously. In conjunction with the oil conveying component 41, oil is introduced and discharged at both ends of the propulsion block 43, which assists the movement of the propulsion block 43 and improves the movement stability of the propulsion block 43 and the conveying rod.

[0022] Specifically, in practical applications, the device is fixed by bolts to the bottom mounting base of the outer casing 1 and is used for propulsion of mining and drilling equipment.

[0023] In the initial state, the output rod 3 is in a retracted state, and the oil delivery assembly 41 is connected to the hydraulic cylinder through pipelines.

[0024] In use, the front end of the output rod 3 is connected to mining or drilling equipment, driving the first drive device 422 to rotate the drive wheel 423. The drive wheel 423 drives the driven wheels 424 on both sides to rotate synchronously and in the same direction. At the same time, the screw of the ball screw rotates, pushing the nut of the ball screw to move along the screw axis and pushing the propulsion block 43 to extend. Simultaneously, the inlet pipe 411 delivers oil into the outer casing 1 to dynamically balance the internal pressure and assist the propulsion block 43 to move to the front end. The outlet pipe 412 delivers the oil from the front end of the outer casing 1 to achieve the extension of the output rod 3. Reverse oil supply achieves the retraction of the output rod 3, increasing the movement stability of the propulsion block 43. At the same time, the oil reduces vibration transmission, effectively absorbs and isolates vibration, and improves the smoothness and reliability of the propulsion process.

[0025] In one embodiment of this utility model, such as Figure 2 and Figure 3 As shown, the first drive assembly 42 includes a protective housing 421, a first drive device 422, a drive wheel 423, two symmetrically arranged driven wheels 424, and two ball screws 425.

[0026] The protective housing 421 is disposed on the outer shell 1 and is located away from the end cap 2. The drive wheel 423 is rotatably connected to the protective housing 421 through the first drive device 422. Two symmetrically arranged driven wheels 424 are rotatably connected to the protective housing 421 and mesh with the drive wheel 423 respectively. Two ball screws 425 are rotatably connected to the outer shell 1 and are connected to the driven wheel 424 and the push block 43 respectively.

[0027] It should be noted that the first driving device 422 proposed in the above embodiment adopts a rotary motor, which drives the driving wheel 423 to rotate, and drives the driven wheels 424 meshing on both sides to rotate synchronously and in the same direction, and drives the two ball screws 425 to rotate. The nuts of the ball screws 425 are connected to the push block 43 to achieve precise propulsion of the push block 43.

[0028] In one embodiment of this utility model, such as Figure 2 and Figure 3 As shown, the two ends of the propulsion block 43 are provided with two sets of sealing rings 431.

[0029] It should be noted that the two sets of sealing rings 431 described in this embodiment are respectively installed at both ends of the push block 43. Each set of sealing rings 431 consists of two sealing rings 431, which respectively fit into the outer walls of both ends of the push block 43, effectively improving the sealing effect.

[0030] In one embodiment of this utility model, such as Figure 2 and Figure 3 As shown, the oil delivery assembly 41 includes an inlet pipe 411 and an outlet pipe 412.

[0031] The liquid inlet pipe 411 is located on the outer shell 1 and is close to one end of the protective shell 421, while the liquid outlet pipe 412 is located on the outer shell 1 and is located away from the end of the liquid inlet pipe 411.

[0032] It should be noted that the inlet pipe 411 and outlet pipe 412 proposed in this embodiment are used to connect the hydraulic cylinder. The inlet pipe 411 delivers oil into the outer shell 1, and the push block 43 is pushed forward. At the same time, the outlet pipe 412 sends out the oil at the front end of the outer shell 1, reducing vibration transmission and increasing the movement stability of the push block 43.

[0033] In summary, the pressure-stabilized hydraulic propulsion device of this utility model combines mechanical transmission and hydraulic pressure stabilization structure to dynamically balance internal pressure, effectively absorb and isolate vibration, and improve the stability and reliability of the propulsion process.

[0034] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0036] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A pressure-stabilized hydraulic propulsion device, characterized in that, It includes an outer casing, end caps, output rod, and propulsion mechanism, among which, The end cap is disposed on the outer casing; The output rod is movably connected to the inside of the outer casing via the propulsion mechanism and extends through the end cap; The propulsion mechanism includes an oil delivery assembly, a first drive assembly, and a propulsion block, wherein... The propulsion block is movably connected to the inside of the outer casing via the first drive assembly and is connected to the output rod; The oil delivery assembly is mounted on the outer casing; the first drive assembly includes a protective housing, a first drive device, a drive wheel, two symmetrically arranged driven wheels, and two ball screws, wherein... The protective housing is disposed on the outer shell and at the end away from the end cap; The drive wheel is rotatably connected to the protective housing via the first drive device; The two symmetrically arranged driven wheels are rotatably connected to the protective housing and respectively mesh with the driving wheel; The two ball screws are rotatably connected to the outer casing and are respectively connected to the driven wheel and the push block; The oil delivery assembly includes an inlet pipe and an outlet pipe, wherein... The liquid inlet pipe is disposed on the outer shell and is located near one end of the protective shell; The liquid outlet pipe is disposed on the outer casing and is located at the end away from the liquid inlet pipe.

2. The pressure-stabilized hydraulic propulsion device according to claim 1, characterized in that, The propulsion block has two sets of sealing rings at both ends.

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