Bidirectional hydraulic supporting leg rod

Abstract

The invention discloses a bidirectional hydraulic supporting leg rod, and relates to the technical field of hydraulic supporting tools. A two-way hydraulic supporting leg rod comprises a single-side supporting leg rod and a two-way supporting leg rod, the single-side supporting leg rod is arranged on the upper portion of the two-way hydraulic supporting leg rod, the single-side supporting leg rod extends upwards, the two-way supporting leg rod is fixedly connected to the lower portion of the single-side supporting leg rod in a screwed mode, and the two-way supporting leg rod extends in the upper direction and the lower direction. The lower portion of the bidirectional supporting leg rod is fixedly connected with the single-side supporting leg rod in a screwed mode, and the single-side supporting leg rod on the lower portion extends downwards. By arranging the single-side supporting leg rod and the bidirectional supporting leg rod, bidirectional jacking is achieved, the machining process difficulty of the large-length cylinder barrel is reduced, and the production cost is reduced; meanwhile, flexible assembly can be carried out, supporting operation of different heights is achieved, the practicability of the supporting leg is greatly improved, the upper acting force and the lower acting force are evenly distributed, and the bending strength and stability of the supporting leg are effectively improved.

Description

Technical Field

[0001] This invention relates to the field of hydraulic support tool technology, and specifically to a bidirectional hydraulic outrigger rod. Background Technology

[0002] Currently, when working in coal mines, subway tunnels, and air-raid shelters, supports are generally made of wooden sticks, iron bars, etc., which are neither sturdy nor stable, and safety cannot be guaranteed. Ordinary hydraulic outriggers are not long enough, have insufficient torque, and lack bending strength.

[0003] Designing long hydraulic outriggers with individual cylinders presents significant manufacturing challenges. For instance, the requirements for axial straightness, roundness, and material rigidity of a single cylinder increase dramatically with its length, resulting in prohibitively high production costs. Furthermore, long hydraulic cylinders are susceptible to damage from radial forces after extension. Additionally, existing hydraulic cylinders use side-entry oil from the cylinder barrel, increasing manufacturing complexity and the sealing requirements for auxiliary oil lines. Summary of the Invention

[0004] The purpose of this invention is to provide a bidirectional hydraulic outrigger rod, which solves the problems of wooden sticks, iron bars, etc., which are neither sturdy nor stable and do not guarantee safety; general hydraulic outriggers are not long enough, have weak torque force and insufficient bending strength; and long hydraulic outriggers with a single cylinder are difficult to process, have high production costs, and are easily damaged by radial force after being extended.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A bidirectional hydraulic outrigger rod includes a single-sided outrigger rod and a bidirectional outrigger rod. The upper part of the bidirectional hydraulic outrigger rod is provided with the single-sided outrigger rod, which extends upward. The lower part of the single-sided outrigger rod is screwed and fixed with the bidirectional outrigger rod, which extends in both vertical directions. The lower part of the bidirectional outrigger rod is screwed and fixed with the single-sided outrigger rod, which extends downward.

[0007] Furthermore, the bidirectional support rod includes a cylinder, an upper movable cylinder, a lower movable cylinder, and a liquid inlet device. The cylinder is provided on the outside of the bidirectional support rod. The upper movable cylinder is sleeved on the upper inner side of the cylinder, and the lower movable cylinder is sleeved on the lower inner side of the cylinder. The upper movable cylinder is sleeved on the upper part of the lower movable cylinder, and the liquid inlet device is provided in the middle of the outer wall of the cylinder.

[0008] Furthermore, the cylinder and the liquid inlet device are integrally formed.

[0009] Furthermore, the bottom of the upper movable cylinder and the lower movable cylinder are provided with angled fixing blocks.

[0010] Furthermore, the liquid inlet device is provided with a liquid inlet, and the liquid inlet channel connected to the rear side of the liquid inlet is provided with two liquid inlet chambers. The liquid inlet channel is Y-shaped, and the liquid inlet chamber is provided with two connected baffles. The rear part of the baffle is provided with a spring.

[0011] Furthermore, the upper movable cylinder and the lower movable cylinder have several through holes on their side walls for liquid inlet.

[0012] The beneficial effects of this invention are as follows: This application achieves bidirectional lifting by setting single-sided and bidirectional support legs, reducing the processing difficulty of long cylinders and lowering production costs; at the same time, it allows for flexible assembly, enabling support operations at different heights, greatly improving its practicality, and the uniform distribution of the upper and lower dual forces effectively enhances the bending strength and stability of the support legs; the Y-shaped hydraulic inlet channel, combined with the stop block and spring structure, achieves automatic hydraulic distribution, ensuring synchronous extension and retraction of the upper and lower moving cylinders, improving the reliability of the operation; the hydraulic inlet device is integrally formed with the cylinder, reducing sealing points, lowering the risk of leakage, and simplifying the assembly process; the angled fixing block enhances the bottom connection strength, the through-hole design makes the hydraulic oil distribution more even, the overall structure is compact and has high rigidity, and it is suitable for support needs under various complex working conditions.

[0013] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 This is a schematic diagram of the unfolded state of component 1 of the present invention.

[0016] Figure 3 This is a schematic diagram of the unfolded state of component 2 of the present invention.

[0017] Figure 4 for Figure 3 Enlarged view of circle A in the middle.

[0018] Explanation of reference numerals in the attached drawings: 1. Single-sided support leg; 2. Two-way support leg; 20. Cylinder; 21. Upper movable cylinder; 22. Lower movable cylinder; 23. Liquid inlet device; 24. Angled fixing block; 25. Through hole; 230. Liquid inlet; 231. Liquid inlet channel; 232. Liquid inlet chamber; 233. Stop block; 234. Spring. Detailed Implementation

[0019] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0022] Please see Figure 1 A preferred embodiment of this application shows a bidirectional hydraulic outrigger rod, including a single-sided outrigger rod 1 and a bidirectional outrigger rod 2. The upper part of the bidirectional hydraulic outrigger rod is provided with the single-sided outrigger rod 1, which extends upward. The lower part of the single-sided outrigger rod 1 is screwed and fixed with the bidirectional outrigger rod 2, which extends in both vertical directions. The lower part of the bidirectional outrigger rod 2 is screwed and fixed with the single-sided outrigger rod 1, which extends downward.

[0023] The bidirectional support rod 2 includes a cylinder 20, an upper movable cylinder 21, a lower movable cylinder 22, and a liquid inlet device 23. The cylinder 20 is provided on the outside of the bidirectional support rod 2. The upper movable cylinder 21 is fitted on the upper inner side of the cylinder 20, and the lower movable cylinder 22 is fitted on the lower inner side of the cylinder 20. The upper movable cylinder 21 is fitted on the upper part of the lower movable cylinder 22. The liquid inlet device 23 is provided in the middle of the outer wall of the cylinder 20.

[0024] The cylinder 20 and the liquid inlet device 23 are integrally formed.

[0025] The bottom of the upper movable cylinder 21 and the lower movable cylinder 22 are provided with angled fixing blocks 24.

[0026] The liquid inlet device 23 is provided with a liquid inlet 230. The liquid inlet channel 231 connected to the rear side of the liquid inlet 230 is provided with two liquid inlet chambers 232. The liquid inlet channel 231 is Y-shaped. The liquid inlet chambers 232 are provided with two connected baffles 233. The rear part of the baffle 233 is provided with a spring 234.

[0027] The upper movable cylinder 21 and the lower movable cylinder 22 have several through holes 25 for liquid inlet on their side walls.

[0028] In use, hydraulic oil enters the inlet channel 231 from the inlet port 230 of the inlet device 23, and flows synchronously into the two inlet chambers 232. This pushes the stop block 233 to overcome the resistance of the spring 234 and open the passage. After being split by a Y-shaped flow, the hydraulic oil enters the extension spaces of the upper movable cylinder 21 and the lower movable cylinder 22 through the through hole 25, driving them to extend synchronously and achieve bidirectional support. When the oil supply stops, the spring returns to its original position, causing the stop block to close the flow channel and prevent backflow. The angled fixing block can be easily installed and used for limiting, ensuring the stability and reliability of the outrigger rod during operation. The integrated molding structure of the cylinder and the inlet device improves the overall strength and sealing performance, reducing the risk of leakage. The single-sided outrigger rod 1 extends upward or downward, forming a flexible support structure, which, together with the bidirectional outrigger rod 2, achieves multidirectional force balance.

[0029] In summary, this invention provides a bidirectional hydraulic outrigger rod. This device achieves bidirectional lifting by setting single-sided and bidirectional outrigger rods, reducing the processing difficulty of long cylinders and lowering production costs. It also allows for flexible assembly, enabling support operations at different heights, greatly improving its practicality. Furthermore, the even distribution of the dual forces effectively enhances the bending strength and stability of the outrigger. The Y-shaped hydraulic inlet channel, combined with a stop block and spring structure, achieves automatic hydraulic distribution, ensuring synchronous extension and retraction of the upper and lower moving cylinders, improving operational reliability. The hydraulic inlet device is integrally formed with the cylinder, reducing sealing points, lowering the risk of leakage, and simplifying the assembly process. The angled fixing block enhances the bottom connection strength, and the through-hole design ensures more even hydraulic oil distribution. The overall structure is compact, highly rigid, and suitable for support needs under various complex working conditions.

[0030] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0031] The embodiments described above are merely illustrative of implementation methods of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A bidirectional hydraulic outrigger rod, characterized in that, It includes a single-sided outrigger rod (1) and a double-sided outrigger rod (2). The upper part of the double-sided hydraulic outrigger rod is provided with the single-sided outrigger rod (1), and the extension direction of the single-sided outrigger rod (1) is upward. The lower part of the single-sided outrigger rod (1) is screwed and fixed with the double-sided outrigger rod (2), and the extension direction of the double-sided outrigger rod (2) is both up and down. The lower part of the double-sided outrigger rod (2) is screwed and fixed with the single-sided outrigger rod (1), and the extension direction of the lower part of the single-sided outrigger rod (1) is downward.

2. The bidirectional hydraulic outrigger rod as described in claim 1, characterized in that, The bidirectional support rod (2) includes a cylinder (20), an upper movable cylinder (21), a lower movable cylinder (22), and a liquid inlet device (23). The cylinder (20) is provided on the outside of the bidirectional support rod (2). The upper movable cylinder (21) is sleeved on the upper inner side of the cylinder (20). The lower movable cylinder (22) is sleeved on the lower inner side of the cylinder (20). The upper part of the lower movable cylinder (22) is sleeved inside the upper movable cylinder (21). The liquid inlet device (23) is provided in the middle of the outer wall of the cylinder (20).

3. The bidirectional hydraulic outrigger rod as described in claim 2, characterized in that, The cylinder (20) and the liquid inlet device (23) are integrally formed.

4. The bidirectional hydraulic outrigger rod as described in claim 2, characterized in that, The bottom of the upper movable cylinder (21) and the lower movable cylinder (22) are provided with angled fixing blocks (24).

5. A bidirectional hydraulic outrigger rod as described in claim 2, characterized in that, The liquid inlet device (23) is provided with a liquid inlet (230). The liquid inlet channel (231) connected to the rear side of the liquid inlet (230) is provided with two liquid inlet chambers (232). The liquid inlet channel (231) is Y-shaped. The liquid inlet chamber (232) is provided with two connected blocks (233). The rear part of the block (233) on the rear side is provided with a spring (234).

6. The bidirectional hydraulic outrigger rod as described in claim 2, characterized in that, The upper movable cylinder (21) and the lower movable cylinder (22) have several through holes (25) for liquid inlet on their side walls.

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