CN201090223Y

CN201090223Y - U-shaped steel collapsible tunnel supporting groove strip steel card cable

Info

Publication number: CN201090223Y
Application number: CNU2007200410660U
Authority: CN
Inventors: 刘明生; 刘效春; 孔祥亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-07-27
Filing date: 2007-07-27
Publication date: 2008-07-23
Anticipated expiration: 2017-07-27

Abstract

Disclosed is a groove-shaped strip steel clamp for a U-shaped steel retractable tunnel bracket. The utility model is characterized in that the strip steel clamp is of half-structure on which pairs of upper and lower groove splints provided with flankings are arranged; bolts are used to fasten between the flankings of the upper groove splints and the flankings of the lower groove splints; flanges are arranged at the backsides of the splints, on the front and rear edges of the upper and lower groove splints. The utility model enables the strength, stiffness and deformation-resistant capability to be greatly increased so as to improve the safety and reliability of the U-shaped steel retractable tunnel bracket when in use. With easy implementation, the utility model can be made of groove-shaped strip steels with flanges at both sides.

Description

The scalable excavation support troughed belt of U shaped steel steel card cable

Technical field:

It is fixing with the card cable that the utility model relates to the scalable excavation support of U shaped steel that is applied in the colliery.

Background technology:

Traditional double flute clamping plate type card cable adopts the manufacturing of Q345 band steel, intensity is lower, in the process of using, promote two joint U shaped steel produce when sliding relatively the frictional force that must overcome less, cause two U shaped steel to be easy to generate relative slippage, influence the safety and the stability of support, under the bigger situation of support pressurized, the easy recurring structure distortion of card cable connects and lost efficacy simultaneously.For the bulk strength that guarantees support must carry out modifier treatment to card cable clip plate, make production technology be tending towards complicated so again.

The utility model content:

The utility model is for avoiding above-mentioned existing in prior technology weak point, the scalable excavation support troughed belt of a kind of U shaped steel steel card cable being provided, by improving the intensity of clamping plate, to improve safety and the reliability in the use.

The technical scheme that the utility model technical solution problem is adopted is:

The design feature of the scalable excavation support troughed belt of the utility model U shaped steel steel card cable is to be half slide structure to be provided with the last groove clamping plate of flank and following groove clamping plate in pairs, between last groove clamping plate flank and following groove clamping plate flank with bolton; On the front and back bead of last groove clamping plate and following groove clamping plate, there is flange at the back that is positioned at clamping plate.

Design feature of the present utility model also is:

Last groove clamping plate and following groove clamping plate are to make with the grooved band steel that both sides have a flange.

The longitudinal section of flange is a right-angled trapezium, and its length of going to the bottom is greater than upper base length, and the waist that described right-angled trapezium and right angle are adjacent is in the outer of flute profile band steel, and the angle of the upper surface of another waist and flute profile band steel is the obtuse angle.

Compared with the prior art, the beneficial effects of the utility model are embodied in:

1, the utility model increases the ability of intensity, rigidity and the anti-deformation of card cable by establish flange on the front and back bead of last groove clamping plate and following groove clamping plate greatly, has improved the scalable excavation support of U shaped steel safety and reliability in use.Under the equality strength condition, can save raw material.Reduce the weight of card cable, and good looking appearance.

2, the utility model grooved band steel that can directly adopt both sides to have flange is made, and is easy to implement.

Description of drawings:

Fig. 1 (a) is a groove clamping plate front view on the utility model.

Fig. 1 (b) is a groove clamping plate left view on the utility model.

Fig. 1 (c) is a groove clamping plate vertical view on the utility model.

Fig. 2 (a) is a groove clamping plate front view under the utility model.

Fig. 2 (b) is a groove clamping plate vertical view under the utility model.

Fig. 2 (c) is a groove clamping plate left view under the utility model.

Fig. 3 is used troughed belt steel sectional view by the utility model.

Fig. 4 is the utility model card cable assembly structure sectional view.

Number in the figure: groove clamping plate, 2 times groove clamping plate, 3 flute profile band steel, 4 flanges, 5 upper surfaces, 6 bolts, 7 are U shaped steel on 1.

The utility model is described in further detail by the following examples, and in conjunction with the accompanying drawings:

The specific embodiment:

Referring to Fig. 4, be last groove clamping plate 1 and following groove clamping plate 2 that half slide structure is provided with flank in pairs, fastening with bolt 6 between last groove clamping plate flank and following groove clamping plate flank, form fixing to U shaped steel 7; On the front and back bead of last groove clamping plate 1 and following groove clamping plate 2, there is flange 4 at the back that is positioned at clamping plate.

In concrete the enforcement, adopts both sides shown in Figure 3 to have the grooved band steel 3 of flange 4, last groove clamping plate 1 and following groove clamping plate 2 are to make with the grooved band steel 3 that both sides have a flange 4.In a conventional way, the form of structure of last groove clamping plate 1 is shown in Fig. 1 (a), Fig. 1 (b) and Fig. 1 (c), and the form of structure of following groove clamping plate 2 is shown in Fig. 2 (a), Fig. 2 (b) and Fig. 3 (c).

Shown in Figure 3, the longitudinal section of flange 4 is a right-angled trapezium, its length of going to the bottom is greater than upper base length, the waist that right-angled trapezium and right angle are adjacent is in the outer of flute profile band steel 3, the angle of the upper surface 5 of another waist and flute profile band steel 3 is the obtuse angle, and two flanges 4 on the bead of front and back are that the center line with troughed belt steel longitudinal section is an axial symmetry.

In concrete the enforcement,, directly adopt the troughed belt steel 3 of different specification size according to the requirement of card cable different size.

Following table 1 is a legacy card cable experimental result, and table 2 is the utility model troughed belt steel card cable experimental result, and experimental data shows that the card cable that the strength ratio of the utility model troughed belt steel card cable is traditional improves more than 30%.

Table 1:

Table 2:

Claims

1.U the scalable excavation support troughed belt of shaped steel steel card cable is characterized in that being last groove clamping plate (1) and the following groove clamping plate (2) that half slide structure is provided with flank in pairs, and is fastening with bolt (6) between last groove clamping plate flank and following groove clamping plate flank; On described on the front and back bead of groove clamping plate (1) and following groove clamping plate (2), there is flange (4) at the back that is positioned at clamping plate.

2. the scalable excavation support troughed belt of U shaped steel according to claim 1 steel card cable is characterized in that described groove clamping plate (1) and the following groove clamping plate (2) gone up are to make with the grooved band steel (3) that both sides have a flange (4).

3. the scalable excavation support troughed belt of U shaped steel according to claim 2 steel card cable, the longitudinal section that it is characterized in that described flange (4) is a right-angled trapezium, its length of going to the bottom is greater than upper base length, the waist that described right-angled trapezium and right angle are adjacent is in the outer of flute profile band steel (3), and the angle of the upper surface (5) of another waist and flute profile band steel (3) is the obtuse angle.