What are the structural components of hydraulic support hoses used in coal mines, and what are their functions?

　　Hydraulic hoses for coal‑mine hydraulic supports are among the critical components of fully mechanized mining equipment, used at the coal‑mining face to support the roof and ensure the safety of both equipment and personnel. Hydraulic support hoses for coal mines What is its composition? What is the function of each component? Let’s take a look.

　　 Hydraulic support hoses for coal mines The top beam is in direct contact with the top plate and is one of the primary load-bearing components of the support structure, serving the following key functions:

　　1. It bears the load of the roof’s rock mass.

　　2. Repeatedly supporting the roof can help break up relatively hard roofing materials.

　　Please provide adequate safety clearance for the glazing surface.

　　The structure of hydraulic support hoses used in coal mines is typically classified into integral and split types (with a front beam added to the top beam). The top beam of this support is fabricated as an integral box‑type structure welded from steel plates. On both the left and right sides, side guards overlap the beam‑side protective devices, thereby enclosing the space between the frames; both the left and right sides are equipped with movable side guards.

　　 Hydraulic support hoses for coal mines The top beam is a variable‑section box‑steel structure composed of four main girders and top web members. The upper beam is relatively long, providing ample pedestrian clearance. On both sides of the top beam’s plane, movable side guards are installed; the jacks and spring sleeves that control these side guards are housed within the beam itself, ensuring sufficient installation space. The primary function of the top beam is to bear the load from the top slab and transfer it through the columns and base to the bottom slab.

　　Cover beam

　　The top of the cap beam is hinged to the top girder, while its bottom is connected to the front and rear tie rods. The front and rear tie rods are integrally attached to the base, forming the primary connection and cap component of the support structure. Its main functions are as follows:

　　1. It can withstand the horizontal and lateral forces imposed by the roof, ensuring the support structure’s torsional stability.

　　2. The cap beam, together with the front and rear tie rods and the base, forms a four-bar linkage to generate the desired motion of the support structure.

　　3. After cutting, block the front row of coal in the mining face to maintain working space. Hydraulic support hoses for coal mines.

　　Furthermore, due to the large bending and torsional moments acting on the cap beam and the harsh service conditions, the cap beam must possess adequate strength and stiffness.

　　The cap beam of this support structure is fabricated from steel plates welded into an integral box‑shaped cross‑section. To ensure adequate strength, stiffening plates are welded at the connections between the top beam and the front and rear tie rods, and additional stiffening plates are provided at the corresponding critical sections and welds.

　　Front and rear links

　　The front and rear connecting rods are hinged to the cap beam and the base, respectively, forming a four-bar linkage; its primary functions are as follows:

　　1. Within the range of support height adjustment, the distance between the face of the roof beam and the coal wall (the beam‑end clearance) should vary as little as possible, thereby providing better support for the roof.

　　2. It bears the horizontal and lateral forces from the roof, protecting the support columns from lateral loads. Hydraulic hose for coal mine hydraulic supports.

　　The front-and-rear linkage structure can be either integral or split. The front link of this suspension is a split double-link design, while the rear link features a box‑type structure welded from steel plates. This configuration not only delivers excellent tensile and compressive performance but also exhibits strong adaptability.

　　Bracket

　　The base is a component that transmits the pressure from the top beam to the floor and stabilizes the support structure; it not only meets specified stiffness and strength requirements but also exhibits excellent adaptability to floor undulations, with a contact pressure on the floor that is lower than the allowable limit. The primary functions of hydraulic hoses used in coal‑mine hydraulic supports are as follows:

　　1. Establish installation space for the support structure, control system, push mechanism, and other auxiliary devices.

　　2. Create a positive work environment for employees

　　3. It has the effect of blocking gangue.

　　4. Ensure the stability of the bracket.