CN205047238U - Truss and U shaped steel complex roadway support structure - Google Patents

Abstract

The utility model relates to a truss and U shaped steel complex roadway support structure, can effectively solving U shaped steel support, to strut the effect alone poor, has the problem of potential safety hazard, the utility model discloses a U shaped steel, cassette, articulated joint, link bolt, chord member, web member are constituteed, and the articulated joint and the U shaped steel on web member upper portion pass through the cassette and links to each other, and the articulated joint of web member lower part is passed through the cassette and is linked to each other with the chord member, the utility model discloses convenient to use, easy installation, wireless connection is good, it is little to occupy the tunnel space, the fungible with practice thrift other unnecessary materials, for in the pit safe, production brings a great deal of convenience, and make strut stable and effective.

Description

Roadway support structure with truss and U-shaped steel

technical field

The utility model relates to a roadway support structure in which trusses and U-shaped steels cooperate, and belongs to the field of roadway support.

Background technique

In the process of mine mining, most of the roadways using U-shaped steel supports are semi-circular arches or three-core arches, with an arch radius of 2 to 3m. The radius of the U-shaped steel support is affected by the geological structure or mining action during the support process. The support is affected by the sudden increase and concentrated mine pressure of the surrounding rock formations in the roadway. In this case, the support will be crushed, the roadway will be deformed, and even personal casualties will be caused. Secondly, many coal mines currently use a single hydraulic prop as a reinforced support, but the single hydraulic prop combined with U-shaped steel support occupies a large space in the lower part of the roadway, which affects the normal use of the roadway. In addition, the effect of the above-mentioned method of strengthening the support is not very satisfactory, so a new type of reinforced support structure with low cost and good effect is urgently needed.

Contents of the invention

In view of the above-mentioned problems, the purpose of this utility model is to provide a new type of support structure with simple structure, good support effect and saving the space at the bottom of the roadway.

In order to achieve the above purpose, the support structure of truss and U-shaped steel is adopted. In foreign countries, the arch truss is called light lattice frame. series. The use of truss structure support in coal mines has better mechanical properties, and is light in weight and low in cost.

Truss structures and U-shaped steel arch structures are two of the many structural systems. From a mechanical point of view, all of them can convert the bending moment generated by the external load into the axial tension and pressure of the member, thereby improving the efficiency of the structure.

Arch and truss are two typical structures produced under this principle. The arch realizes the conversion of the bending moment to the axial force with its unique curved form, while the truss converts the bending moment into the axial force of the chord through the lattice. The combination of truss and U-shaped steel arch structure can be used as a reasonable and effective structural system. Therefore, the organic combination of arches and trusses forms a new structural form with more reasonable stress.

The technical solution adopted by the utility model is: a roadway support structure with truss and U-shaped steel, which is characterized in that it is composed of U-shaped steel, brackets, hinged joints, hinged bolts, chords, and webs. The hinged joint is connected with the U-shaped steel through the clamp, and the hinged joint at the lower part of the web is connected with the chord through the clamp. The deck connecting the web bar with the U-shaped steel and the chord bar is composed of a plate body with an arc-shaped section, a mask, bolts and nuts. The U-shaped steel is clamped in the arc-shaped cross-section groove between the mask and the plate body, and the mask and the plate body are fixed by bolts and nuts. The lower part of the plate body has two circular holes for the hinge connection of the web bar and the card seat. There are hinged joints at both ends of the web bar, and the hinged joints and the deck are connected by hinged bolts. When the support was stressed and the U-shaped steel leg column could not support it, the single hydraulic prop (12) was connected to the lowermost deck through the hinged joint, and the auxiliary leg column was supported.

The utility model is easy to use, easy to install, has good connection effect, occupies less space in the roadway, can replace and save other unnecessary materials, brings many conveniences to underground safety and production, and makes the support stable and effective.

Description of drawings

Fig. 1 is the schematic structural diagram of this utility model;

Figure 2 is a front view of the deck structure;

Fig. 3 side view of the deck structure;

Fig. 4 is a schematic diagram of the web structure;

Figure 5 is a force analysis diagram of the structure;

Fig. 6 is a schematic diagram of a single hydraulic prop for auxiliary support.

detailed description

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in detail.

As shown in Figure 1, the utility model consists of U-shaped steel, clamps, hinged joints, hinged bolts, chords, and webs. The deck is connected with the chord. When performing support installation, first fix the deck on the U-shaped steel, then connect the chord to the deck, and then connect the web bars to support the roadway.

As shown in Fig. 2 and Fig. 3, the clamping seat connecting the web bar with the U-shaped steel and the chord bar is composed of a plate body with an arc-shaped section, a mask, bolts and nuts. The U-shaped steel is clamped in the arc-shaped cross-section groove between the mask and the plate body, and the mask and the plate body are fixed by bolts and nuts. The lower part of the plate body has two circular holes for the hinge connection of the web bar and the card seat.

As shown in Figure 4, there are hinged joints at both ends of the web bar, and the hinged joints and the deck are connected by hinged bolts.

As shown in Figure 5 and Figure 6, when the top U-shaped steel is stressed, the U-shaped steel can bear part of the force. In addition, another part of the force is transmitted to the chord through the hinge structure through the web, and the force transmitted to the chord Along the chord rod, it is transmitted to the lowermost deck, and the deck acts on the roadway wall with horizontal force and the vertical force with U-shaped steel leg column. When the force on the card seat is large, if it exceeds the force limit of the leg column, it can be supported by a single hydraulic prop.

Claims (2)

1. A roadway support structure with a new type of truss and U-shaped steel, which is characterized in that it consists of U-shaped steel (1), brackets (2), hinged joints (3), hinged bolts (4), and chords (5) , web bar (6), the hinged joint (3) on the upper part of the web bar is connected to the U-shaped steel through the bracket (2), and the hinged joint (3) on the lower part of the web bar is connected to the chord (5) through the bracket (2) . 2. A roadway support structure in which trusses and U-shaped steels are matched according to claim 1 is characterized in that the deck connecting the web bar with the U-shaped steel and the chord is composed of an arc-shaped plate body (7) and a mask (8) ), bolts (9) and nuts (10); the U-shaped steel is clamped in the arc-shaped section groove between the mask and the plate body and the mask and the plate body are fixed by bolts and nuts; the lower part of the plate body is composed of two round Hole (11) is used for web bar and deck hinge.