CN210799013U - A constant pressure self-moving temporary support hydraulic support for excavation - Google Patents

Abstract

The utility model relates to a tunnelling is with constant voltage from moving formula temporary support hydraulic support comprises support inner beam, support outer beam, outer back timber, interior back timber, beam assembly, hinge structure, hydraulic column, support floorbar, advancing jack. The utility model is nested by two groups of supporting structures and is connected with the hydraulic upright post through a hinge structure; the pushing jack is connected with the top beam through a hinge structure. The temporary support can automatically move the support and the lifting frame under constant pressure in the cutting process of the heading machine, the interference of heading and supporting is solved, the problems of support inclination, support pressing, bottom drilling and the like are solved, the simultaneous operation of cutting and permanent supporting of the heading machine is realized, the structure is simple, and the safety and reliability are high.

Description

A constant pressure self-moving temporary support hydraulic support for excavation

technical field

The invention relates to the technical field of roadway support, in particular to a constant pressure self-moving temporary support hydraulic support for excavation.

Background technique

The tunnel excavation construction is subdivided into the excavation part and the support part. At present, the temporary support equipment mostly used in coal mine excavation can be roughly divided into shed-type temporary support, machine-borne forward-exploration temporary support and bolt-cutting unit temporary support device, while the permanent support mainly includes bolt support and anchor bolt support. Cable support. In the process of roadway excavation, the excavation process and the supporting process are mutually exclusive. When the anchor rod and the anchor cable perform the supporting operation, it is difficult to perfectly match the supporting time with the actual excavation speed; the structure of the temporary support bracket used Larger, it will not only affect the smooth movement of the roadheader, but also greatly increase the actual maintenance of the equipment; the strength of the temporary support is usually low, and when the temporary support moves forward, it is impossible to continuously stabilize the roadway roof. , there are certain security risks.

SUMMARY OF THE INVENTION

The purpose is to solve the interference problem of excavation and support in roadway construction, and to improve safety and excavation speed.

It is hoped that with the temporary support equipment of the present invention, the newly excavated space during the entire excavation process and the roadway roof in the range that is not permanently supported are always in a temporary support state, so that the roadheader operator and the permanent support construction personnel can be reliably supported. Work under temporary support. The problem of mutual interference between excavation and support is solved by automatically shifting and lifting the frame under constant pressure. The invention has the advantages of simple structure, convenient operation, high rack shifting efficiency, strong stability and high safety.

The technical scheme adopted by the present invention to solve the problem is:

A constant-pressure self-moving temporary support hydraulic support for excavation, comprising two sets of forward-probing support structures, each set of support structures is respectively composed of a set of top beams and two support beams through cross beam components welded into a whole, two sets of support structures Nested arrangement, in which the support beams are arranged inside and outside, and the top beams are arranged alternately. Each set of support structures is connected to the hydraulic column through a hinged structure to form a forward-probing support structure.

Further, two sets of bottom beams are arranged at the bottom of the hydraulic column, which are connected by a hinged structure.

Further, two sets of push jacks are arranged in the middle of the two sets of support structure top beams, which are connected by a hinged structure.

Further, the temporary support hydraulic support is provided with two sets of seven top beams contacting the top plate, which increases the contact area with the top plate, prevents the frame from being pressed, and improves the overall stability of the support; The working space is reduced; the roof beam is arranged at intervals, which is conducive to permanent support.

Further, the two groups of support structures alternately lift and move the racks, and are arranged in a nested manner with each other, and the rack-moving process acts as a guide for each other, preventing the support from tilting.

Further, the support adopts a constant pressure self-moving method, and the two sets of support structures alternately move and lift. The operation under the support body improves the reliability; at the same time, the constant pressure shifting frame avoids the damage to the roof surrounding rock caused by the repeated support of the support body.

Compared with the prior art, the present invention has the following beneficial effects: in terms of technology, the present invention has a large contact area with the roof, greatly reduces the deformation pressure of the surrounding rock, prevents the frame from being pressed, and improves the overall stability of the frame; The beams act as guides for each other, which enhances the stability during the frame shifting process, prevents deflection and tilting of the frame during the movement of the frame, and enhances the adaptability of the frame. , the labor intensity is low, and at the same time, the roof and surrounding rock are prevented from being broken due to frequent pressure relief and pressurization of the support, and the safety factor is improved; efficient.

Description of drawings

Fig. 1 Schematic diagram of the arrangement of the excavation face when the present invention works

Figure 2 is a front view of the structure of the present invention

Figure 3 is a top view of the structure of the present invention

Figure 4 side view of the structure of the present invention

Figure 5 is a front view of the structure of the outer roof beam of the present invention

FIG. 6 is a top view of the structure of the outer roof beam of the present invention

Figure 7 side view of the structure of the outer roof beam of the present invention

Figure 8 is a front view of the inner roof beam structure of the present invention

FIG. 9 is a top view of the inner roof beam structure of the present invention

Figure 10 is a side view of the inner roof beam structure of the present invention

Figure 11A, B, C, D, E, F hydraulic column support G, H, I, J front view of hydraulic column transfer frame

Figure 12A, B, C, D, E, F hydraulic column support G, H, I, J top view of hydraulic column transfer frame

Figure 13 G, H, I, J hydraulic column support A, B, C, D, E, F front view of hydraulic column transfer frame

Figure 14G, H, I, J hydraulic column support A, B, C, D, E, F top view of hydraulic column transfer frame

Among them, support inner beam 1, support outer beam 2, outer top beam 3, inner top beam 4, cross beam assembly 5, hinge structure a 6, hydraulic column 7, support base 8, push jack 9, hinge structure b 10

Detailed ways

The present invention provides a technical solution: a constant pressure self-moving temporary support hydraulic support for excavation, comprising a supporting inner beam 1, a supporting outer beam 2, an outer top beam 3, an inner top beam 4, a cross beam assembly 5, a hinged structure a 6. Hydraulic column 7, support bottom beam 8, push jack 9, hinged structure b 10 is composed;

The temporary support hydraulic support is provided with two sets of supporting structures, the outer top beam 3 and the two supporting outer beams 2 are welded into a set of integral support structures through the beam assembly 5, and the inner top beam 4 and the two supporting inner beams are welded by the beam assembly 5. The beam 1 is welded into a group of integral support structures; the cross beam assembly 5 is arranged under the two ends of the outer roof beam 3 and the inner roof beam 4, and is welded with the supporting outer beam 2 and the supporting inner beam 1 as a whole; the inner roof beam 4 is welded as a whole; The welded support structure is arranged between the support structures welded by the supporting outer beam 2, the cross beam assembly 5, and the outer roof beam 4. There is a certain distance between the outer roof beam 3 and the inner roof beam 4, and the inner roof beam 4 can be The middle of the support structure is moved and lifted; ten hydraulic uprights 7 of A, B, C, D, E, F, G, H, I and J are arranged below the rear of the inner support beam 1 and the outer support beam 2, wherein A, B, C, D, E, F hydraulic columns 7 are hinged with the support outer beam 2 through the hinge structure a 6, G, H, I, J hydraulic columns 7 are hinged with the support inner beam 1 through the hinge structure a 6; the hydraulic column 7. The bottom is connected with the support bottom beam 8 through the hinge structure a 6; the push jack 9 is arranged on both sides of the outer top beam 3 and the rear top beam of the inner top beam 4, and is respectively connected with the outer top beam 3 and the inner top beam by the hinge structure b10. The beams 4 are connected; the hinge structures b 10 are arranged on both sides of the outer roof beam 3 and the rear roof beam of the inner roof beam 4 .

The group of temporary supporting hydraulic supports is provided with a total of seven top beams supporting the contact top plate, which increases the contact area with the top plate, prevents the frame from being pressed, and improves the overall stability of the combined frame. The space between beams facilitates permanent support.

The working principle of the present invention is shown in Figures 1 to 14: in order to reduce the mutual interference between the excavation and support processes, the roadheader operator and the permanent support construction personnel work under a reliable temporary support body, as shown in Figure 1 It is shown that the present invention is installed on the roadway excavation working face, and the present invention belongs to a combined hydraulic support with a large contact area of the roadway roof jointly supported by seven roof beams. The hydraulic operation button is used to control the synchronous movement of the combined hydraulic support to realize the constant pressure and self-movement of the support; the support and It and its components are shown in Figure 2-Figure 10; when the temporary hydraulic support needs to be moved during the forward excavation of the excavation face, the hydraulic columns 7 of A, B, C, D, E and F are simultaneously decompressed and contracted, and the outer top The beam 3 leaves the roadway roof and lowers the frame, the inner roof beam 4 and G, H, I, J hydraulic columns 7 support the roof under constant pressure, the outer roof beam 3 is lowered on the support inner beam 1, and the jack 9 is pushed to make it "pull and push". The outer top beam 3, A, B, C, D, E, F hydraulic column 7 and the support bottom beam 8 move forward synchronously. After moving a certain position, the A, B, C, D, E, F hydraulic column 7 increases synchronously. Press and stretch, the outer roof beam 3 contacts the roof of the supporting roadway; after the outer roof beam 3, A, B, C, D, E, F hydraulic columns 7 and the support bottom beam 8 are stabilized, G, H, I, J hydraulic columns 7 Simultaneously unloading and shrinking, the inner roof beam 4 leaves the roadway roof and lowers the frame, the outer roof beam 3 and A, B, C, D, E, F hydraulic columns 7 support the roof under constant pressure, and the inner roof beam 4 descends on the supporting outer beam , Push the jack 9 "one push and one pull" to make the inner top beam 4 and G, H, I, J hydraulic columns 7 move forward synchronously, and after moving a certain position, G, H, I, J hydraulic columns 7 synchronously pressurize and extend long, the inner roof beam 4 contacts and supports the roof of the roadway to complete a frame shifting process, as shown in Figure 10-Figure 14. Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. A constant pressure self-moving temporary supporting hydraulic support for excavation, characterized in that it is composed of a supporting inner beam (1), a supporting outer beam (2), an outer top beam (3), an inner top beam (4), a cross beam The component (5), the hinged structure a (6), the hydraulic column (7), the support bottom beam (8), the push jack (9), and the hinged structure b (10) are composed; the temporary support hydraulic support is provided with two sets of supports Structure, one group is welded with the outer top beam (3) and the two supporting outer beams (2) through the beam assembly (5) to form an integral support structure, and the other group is welded with the inner top beam (4) and the two supporting beams (2) through the beam assembly (5). The supporting inner beams (1) are welded to form an integral support structure; the cross beam assembly (5) is arranged below both ends of the outer roof beam (3) and the inner roof beam (4), and is respectively connected with the supporting outer beam (2) and the supporting inner beam (1) Welding as a whole; the integral support structure formed by welding the inner top beam (4) and the supporting inner beam (1) through the beam assembly (5) is arranged on the supporting outer beam (2), the beam assembly (5) . Between the support structures welded by the outer roof beam (3), there is a certain distance between the outer roof beam (3) and the inner roof beam (4), and the inner roof beam (4) can be moved and lifted in the middle of the support structure; Ten hydraulic uprights (7) of A, B, C, D, E, F, G, H, I, J are arranged below the rear of the inner support beam (1) and the outer support beam (2), wherein A, B, C, D, E, F hydraulic columns (7) are hinged to the outer support beam (2) through the hinge structure a (6), and G, H, I, J hydraulic columns (7) are connected to the support inner beam (7) through the hinge structure a (6). The beam (1) is hinged; the bottom of the hydraulic column (7) is connected with the support bottom beam (8) through the hinge structure a (6); the push jack (9) is arranged on the outer top beam (3), the inner top beam (4) ) The lower sides of the rear roof beam are respectively connected with the outer roof beam (3) and the inner roof beam (4) through the hinge structure b (10); the hinge structure b (10) is arranged on the outer roof beam (3) and the inner roof beam (4). Two sides below the rear roof beam of the roof beam (4). 2. A kind of constant pressure self-moving temporary support hydraulic support for excavation as claimed in claim 1, characterized in that: there are two groups of seven beams contacting the top plate, increasing the contact area with the top plate, preventing the pressure frame , improve the overall stability of the support; the hydraulic column is placed behind to form a forward-looking structure, which increases the working space; the top beam is arranged at intervals, which is conducive to permanent support. 3. A kind of constant pressure self-moving temporary support hydraulic support for excavation as claimed in claim 1, characterized in that: the two groups of support structures alternately lift and move the frame, and are arranged nested in each other, and the frame-moving process is mutual. For guidance, prevent the bracket from tilting. 4. A kind of constant pressure self-moving temporary support hydraulic support for excavation as claimed in claim 1, it is characterized in that: adopting constant pressure self-moving mode, two groups of support structures alternately move and lift, and the whole moving process The roadway roof support is always in a constant pressure state, and the labor intensity is low. At the same time, it avoids the frequent pressure relief and pressurization of the support to cause the roof surrounding rock to be broken, and improves the reliability. 5. A kind of constant pressure self-moving temporary support hydraulic support for excavation as claimed in claim 1, characterized in that: two sets of push jacks are provided, and one set pushes and one set pulls when the frame is moved, so that the support moves more smoothly .

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