CN218934476U

CN218934476U - Tandem tunneling self-moving support with anchor hole drilling machine

Info

Publication number: CN218934476U
Application number: CN202222960215.0U
Authority: CN
Inventors: 李信斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2023-04-28
Anticipated expiration: 2032-11-04

Abstract

The utility model discloses a combined tunneling self-moving bracket with an anchor hole drilling machine, which comprises two row brackets with the same structure, wherein the front end of a top beam of each row bracket is hinged or fixedly connected with a front cantilever; an anchor hole drilling machine is arranged in front of the joist at the forefront end, the anchor hole drilling machine is connected with one of the row brackets through a telescopic mechanism, and the telescopic direction of the anchor hole drilling machine is parallel to the forward moving direction of the row brackets; the telescopic mechanism is fixed below the row type bracket. According to the utility model, multiple rows of anchor holes can be drilled at one time, so that the efficiency is greatly improved, and the tunneling speed is increased; the telescopic mechanism is directly arranged below the original row-type support, the structure of the original row-type support is not changed by the telescopic mechanism, and the supporting effect is guaranteed while the efficiency is improved.

Description

Tandem tunneling self-moving support with anchor hole drilling machine

Technical Field

The utility model relates to the technical field of underground mining, in particular to a combined tunneling self-moving bracket with an anchor hole drilling machine.

Background

When underground mining operation is carried out, such as mining coal mine, supporting equipment is required to be arranged on a mining working face roadway and a working face end head and used for supporting a working face top plate so as to protect safety of constructors. The combined type tunneling self-moving support is the existing common temporary support equipment for tunneling in a roadway, and each time the roadway is excavated, the support is further before, and the combined type tunneling self-moving support has the following structure:

as shown in fig. 1 and 2, the tandem tunneling self-moving support is provided with two tandem supports 1 with the same structure, wherein each tandem support comprises at least two top beams 11 and at least two joists 12, the top beams 11 and the joists 12 are arranged in a crossing manner, the top beams 11 are positioned above the joists 12, telescopic struts 13 are arranged below each tandem support, a space distance is reserved between the two tandem supports, the top beams 11 of the two tandem supports 1 are distributed at intervals, the joists 12 of the two tandem supports 1 are also distributed at intervals, a hydraulic pushing cylinder 14 is arranged between the adjacent joists 12, and the two tandem supports can move forwards relatively under the action of the hydraulic pushing cylinder 14. As shown in fig. 2, the front of the top beams of the two row brackets is hinged or fixedly connected with a front cantilever 15, and the front cantilever 15 can be turned downwards to a position vertical to the top beams 11 and the joists 12 (i.e. vertically downwards) when hinged with the top beams, or can be turned upwards to be horizontal and then turned upwards for a certain angle, i.e. be inclined upwards for a certain angle; the front cantilever beam 15 can be regarded as an extension of the top beam when fixedly connected with the top beam. While the two row type supports support the top working surface, the front cantilever 15 assists in laying the top net, then the anchor hole drilling machine drills anchor holes under the net and installs the anchor rods and the tray, and presses the net under the top plate. Therefore, the support force of the row type tunneling self-moving support to the working top surface is uniform and uninterrupted in the use process, and the support is very safe.

According to the technical scheme that the anchor hole drilling machine is mounted on the joist at the forefront of the support, the mounting mode enables the heading machine to dig forward further, the heading machine digs a row of anchor holes forward further every time the support advances, the heading machine digs forward further, the repeated work is called as digging an anchor, after the heading machine is waited to exit every time the anchor hole drilling machine is required to be restarted, a great amount of time is required to be spent for auxiliary work to start, and the efficiency is low, and time and labor are consumed.

In addition, in a mounting manner of the anchor hole drilling machine, the anchor hole drilling machine is fixed in front of the foremost joist by adopting a bracket, as shown in fig. 3 and 4, the bracket comprises a bracket cross beam 16 and a plurality of bracket longitudinal beams 17, the bracket cross beam 16 is arranged in parallel with the joist 12 of the row type bracket, the bracket longitudinal beam 17 for lifting the bracket cross beam 16 is arranged above the joist of the bracket, occupies the position of the original bracket top beam, is telescopic and is pushed and contracted by a jack arranged in the bracket longitudinal beam, the front end of the bracket longitudinal beam is connected with the bracket cross beam, and the bracket longitudinal beam stretches under the forward pushing of the jack to drive the anchor hole drilling machine on the bracket cross beam to move forwards. The mounting mode enables the bracket longitudinal beams to occupy the original position of the top beams of the bracket, so that the number of the top beams is reduced, the number of front cantilever beams at the front end of the top beams is reduced, and the cross section size of the original top beams is not required to be changed sometimes. However, in some geological situations, the number of top beams of the bracket is fixed, neither reducible nor laterally adjustable. If the number of top beams is small, insufficient supporting area for the top can be caused. If the position of the top beam is adjusted transversely, the top beam can interfere with the anchor head just mounted on the top plate. Therefore, although the structure of the high-level bracket longitudinal beam can be used, the most important work for supporting the top plate is difficult to complete, the supporting effect on the top plate is affected, particularly, the front cantilever of the bracket is reduced, the top plate in front of the bracket is easy to collapse, and the danger is increased.

Disclosure of Invention

In order to solve the technical problems, the utility model innovatively provides the combined tunneling self-moving support with the anchor hole drilling machine, which is characterized in that the anchor hole drilling machine is telescopically fixed in front of the forefront joist, can be telescopic along the advancing direction of the support, and can adjust the position of the anchor hole drilling machine through the telescopic movement of the telescopic mechanism after tunneling for multiple times and walking away the support, so that multiple rows of anchor holes are drilled at one time, the time spent for auxiliary work is reduced, the efficiency is greatly improved, and the tunneling speed is accelerated; in addition, the telescopic mechanism is directly arranged below the original row-type support, the structure of the original row-type support is not changed by the telescopic mechanism, and the supporting effect is guaranteed while the efficiency is improved.

In order to achieve the technical aim, the utility model discloses a combined tunneling self-moving support with an anchor hole drilling machine, which comprises two row-type supports with the same structure, wherein each row-type support comprises at least two top beams and at least two joists, the top beams are arranged in a crossing way, the top beams are positioned above the joists, telescopic struts are arranged below the left end and the right end of each row-type support, the two row-type supports have a spacing distance, the top beams of the two row-type supports are distributed at intervals, the joists of the two row-type supports are distributed at intervals, a hydraulic pushing cylinder is arranged between the adjacent joists and used for pushing the two row-type supports to move forwards relatively, and the front ends of the top beams are hinged or fixedly connected with front cantilever beams;

the front of the joist at the forefront is provided with an anchor hole drilling machine, the anchor hole drilling machine is connected with one of the row brackets through a telescopic mechanism, the telescopic direction of the anchor hole drilling machine is parallel to the forward moving direction of the row brackets, and the telescopic mechanism is fixed below the row brackets.

Further, the telescopic mechanism comprises a telescopic rod, one end of the telescopic rod is connected with one of the row-type brackets, the other end of the telescopic rod is connected with the anchor hole drilling machine, and the telescopic rod is parallel to the advancing direction of the row-type brackets.

Further, one end of the telescopic rod is fixedly connected with the top beam and/or the joist of the row-type bracket.

Further, a protective sleeve is arranged outside the telescopic support column, and the telescopic rod close to the protective sleeve is fixedly connected with the joist and the protective sleeve at the same time.

Further, the telescopic rod is an electric telescopic rod, a hydraulic telescopic rod or an air pressure telescopic rod.

Further, the telescopic mechanism comprises a loop bar, an inner bar and a sliding driving device, wherein the loop bar is sleeved outside the inner bar in a sliding mode, one of the loop bar and the inner bar is fixedly connected with the row-type support, the other of the loop bar and the inner bar is fixedly connected with the anchor hole drilling machine, and the sliding driving device is respectively connected with the loop bar and the inner bar and drives the bar connected with the anchor hole drilling machine to slide relative to the other bar.

Further, the sliding driving device is an electric push rod, a pneumatic cylinder or a hydraulic cylinder.

Further, the number of the telescopic mechanisms is at least two, the front ends of the telescopic mechanisms are connected through connecting beams, the anchor hole drilling machine is fixed on the connecting beams, and the connecting beams are positioned in front of the joists at the forefront ends.

The beneficial effects of the utility model are as follows:

according to the combined tunneling self-moving support with the anchor hole drilling machine, the anchor hole drilling machine is fixed in front of the forefront joist in a telescopic manner, the anchor hole drilling machine can stretch and retract along the advancing direction of the support, the position of the anchor hole drilling machine can be adjusted through the telescopic movement of the telescopic mechanism after tunneling and walking the support for multiple times, multiple rows of anchor holes are drilled at one time, the time spent in auxiliary work is reduced, the efficiency is greatly improved, and the tunneling speed is accelerated; and directly install telescopic machanism in original row formula support's below, telescopic machanism's setting does not change original row formula support's structure, guarantees the supporting effect when improving efficiency.

Drawings

FIG. 1 is a front view of a prior art tandem stent;

FIG. 2 is a bottom view of a prior art tandem bracket;

FIG. 3 is a front view of a prior art anchor hole drilling machine and gang bracket securing;

FIG. 4 is a bottom view of a prior art anchor hole drilling machine and gang bracket securing;

FIG. 5 is a front view of a rack mount according to a first embodiment of the present utility model;

fig. 6 is a front view of a rack mount according to a second embodiment of the present utility model.

In the drawing the view of the figure,

1. a row-type bracket; 11. a top beam; 12. joist; 13. a telescopic strut; 14. a hydraulic propulsion cylinder; 15. a front cantilever; 16. a bracket beam; 17. a bracket longitudinal beam; 2. a telescopic rod; 21. a loop bar; 22. an inner rod; 27. and connecting the beams.

Detailed Description

The combined tunneling self-moving bracket with the anchor hole drilling machine provided by the utility model is explained and illustrated in detail below by combining with the attached drawings of the specification.

The embodiment particularly discloses a combined tunneling self-moving support with an anchor hole drilling machine, which comprises two row supports 1 with the same structure, as shown in fig. 1 and 2, wherein each row support 1 comprises at least two top beams 11 and at least two joists 12, the top beams 11 and the joists 12 are arranged in a crossed manner, and preferably, the top beams 11 and the joists 12 are crossed to form an angle of 90 degrees. The top beams 11 are positioned above the joists 12, telescopic struts 13 are arranged below the left end and the right end of each row-type support 1, the two row-type supports 1 are provided with a spacing distance, the top beams 11 of the two row-type supports 1 are distributed alternately, the joists 12 of the two row-type supports 1 are distributed alternately, a hydraulic propulsion cylinder 14 is arranged between the adjacent joists 12, and the hydraulic propulsion cylinder 14 is used for propelling the two row-type supports 1 to move forwards relatively and providing uninterrupted supporting force for the working top surface.

As shown in fig. 2, the front end of the top beam 11 is hinged or fixedly connected with a front cantilever beam 15, and when the front cantilever beam 15 is hinged with the top beam, the front cantilever beam can be turned down to a position vertical to the top beam 11 and the joist 12 (i.e. vertically downward), or can be turned up to a horizontal position and then turned up for a certain angle, i.e. tilted up for a certain angle; when the front cantilever beam 15 is fixedly connected with the top beam 11, the front cantilever beam is positioned on the same straight line and can be regarded as a forward extension section of the top beam. While the two row brackets support the top work surface, the front canopy 15 assists in laying the top net.

With respect to the fixing mode of the top beam and the joist, a drop block can be arranged between the top beam and the joist, the top beam is fixedly connected with the joist through the drop block, and the width of the drop block is smaller than that of the top beam. As can be seen from fig. 2, the two row-type brackets are relatively independent, so that the relative movement can be realized, and meanwhile, the drop block is helpful to reduce the frictional resistance between the two row-type brackets and the moving row-type bracket and the top surface of the working surface when the row-type brackets relatively move, so that the relative movement of the two row-type brackets can be conveniently debugged.

Preferably, the telescopic support is a hydraulic jack, and the telescopic support can shrink when advancing while providing strong support, and is matched with the hydraulic propulsion cylinder 14 to facilitate forward movement.

In the tandem tunneling self-moving support of the embodiment, an anchor hole drilling machine is arranged in front of the joist 12 at the forefront end, the anchor hole drilling machine is connected with one of the tandem supports 1 through a telescopic mechanism, and the telescopic direction of the anchor hole drilling machine is parallel to the forward moving direction of the tandem support 1.

The original anchor hole drilling machine mounting mode can only realize one digging and one anchoring, the position of the anchor hole drilling machine is changed through the telescopic mechanism, the forward tunneling multi-step of the tunneling machine can be realized, after the tandem tunneling self-moving support also advances multi-step, the anchor hole drilling machine adjusts the position through the telescopic motion of the telescopic mechanism, a plurality of rows of holes are drilled in front of the tandem support, and in the embodiment, one row of holes refers to a plurality of holes drilled in parallel to the joist, the top working surface and the side walls; after a plurality of rows of holes are drilled, the heading machine continues to heading forward, and after the combined row type heading self-moving support walks through the tunneling space, the anchor hole drilling machine continues to finish drilling a plurality of rows of holes at one time, so that the working efficiency is obviously improved, the tunneling speed is increased, and the original structure of the combined row type heading self-moving support is not changed, so that the original supporting effect and strength are still maintained.

As shown in fig. 5 and 6, the telescoping mechanism is fixed below the row bracket. Can be positioned under the top beam or under the joist. In the most preferred embodiment, the telescoping mechanism is secured below the joist. The telescopic mechanism is a structure which is independently additionally arranged on the basis of not changing the row type support, and the top beam arrangement structure and the supporting effect of the original row type support are fully reserved.

As shown in fig. 5, the telescopic mechanism includes a telescopic rod 2, and the telescopic rod 2 may be an electric telescopic rod, a hydraulic telescopic rod or an air telescopic rod. One end of the telescopic rod 2 is connected with one of the row-type brackets, in particular, is fixedly connected with the top beam and/or the joists of the row-type brackets, namely, the rear end of the telescopic rod can be fixedly connected with one or more joists of the row-type brackets, is positioned below the joists, can be fixedly connected with the top beam (preferably fixedly connected with the part of the top beam, which is positioned in front of the foremost joist when being fixedly connected with the top beam), is positioned below the top beam, and can be simultaneously fixedly connected with the top beam and the joists; the other end (i.e. the front end) of the telescopic rod 2 is connected with an anchor hole drilling machine, and the telescopic rod 2 is parallel to the advancing direction of the row type bracket 1. In this embodiment, the telescopic rod 2 is parallel to the top beam, and the telescopic rod 2 is fixed below the row-type support 1, so that the supporting effect of the row-type support on the top working surface is not affected, and the passing of other devices below the row-type support is not affected. The telescopic link 2 of this embodiment is directly connected with anchor eye rig and row formula support, and telescopic link 2 drives anchor eye rig shift position and drills in the direction along row formula support antedisplacement through the flexible of self and flexible length, realizes once only that to beat the multirow drilling. For example, the interval between each row of holes is 1 meter, and the length of each extension of the telescopic rod 2 is also 1 meter.

In another embodiment, a protective sleeve is arranged outside the telescopic support column 13, the telescopic support column 13 stretches and contracts in the protective sleeve, one end (i.e. the end fixed relative to the row type support frame) of the telescopic rod 2 close to the protective sleeve is fixedly connected with the joist and the protective sleeve at the same time, and the other end (i.e. the front end) of the telescopic rod 2 is connected with the anchor hole drilling machine under the joist.

The number of telescopic mechanisms may be one or more, in this embodiment, at least two telescopic mechanisms, the front ends of which are connected by a connecting beam 27, the anchor hole drilling machine is fixed on the connecting beam 27, and the connecting beam 27 is located in front of the foremost joist 12. When the number of the telescopic rods 2 is multiple, the supporting strength and the telescopic stability of the anchor hole drilling machine are improved, and the construction safety is ensured. The telescopic rods 2 are mutually parallel and fixed below the row-type support, the fixed ends of the telescopic rods 2 are fixedly connected with the row-type support, the telescopic ends of the telescopic rods 2 are fixedly connected with the connecting beams 27, the connecting beams 27 are parallel to the joists, the connecting beams 27 are perpendicular to the telescopic directions of the telescopic rods 2, the anchor hole drilling machine is fixed on the connecting beams 27, and all the telescopic rods 2 simultaneously stretch or stretch the telescopic rods 2 of any anchor hole drilling machine to drive the anchor hole drilling machine to move.

In another embodiment, as shown in fig. 6, the telescopic mechanism comprises a sleeve rod 21, an inner rod 22 and a sliding driving device (not shown in the figure), wherein the sleeve rod 21 is sleeved outside the inner rod 22 in a sliding way, one of the sleeve rod 21 and the inner rod 22 is fixedly connected with a row type bracket, the other is fixedly connected with an anchor hole drilling machine, and the sliding driving device is respectively connected with the sleeve rod 21 and the inner rod 22 and drives a rod connected with the anchor hole drilling machine to slide relative to the other rod. The sliding driving device is an electric push rod, a pneumatic cylinder or a hydraulic cylinder.

The fixing stability of the anchor hole drilling machine is improved by arranging the sleeve rod 21 and the inner rod 22 to connect the anchor hole drilling machine with the row type support, and the fixing area of the sleeve rod 21 and the inner rod 22 is further increased due to the fact that the size and the weight of the anchor hole drilling machine are large, so that the supporting strength is increased. The number of telescopic means may also be one or more, in this embodiment at least two, the loop bar 21 and the inner bar 22 being parallel to the top beam. If the sleeve rod 21 is fixed relative to the row bracket, the inner rod 22 slides in the sleeve rod 21, the sleeve rod 21 is fixedly connected with the top beam, the joist, the top beam and the joist of the row bracket or the protective sleeve of the joist and the telescopic strut at the same time, the rear end of the inner rod 22 stretches into the sleeve rod 21, and the front end of the inner rod 22 is fixedly connected with the connecting beam 27 or the anchor hole drilling machine directly; if the inner rod 22 is fixed relative to the row bracket, the sleeve rod 21 slides along the inner rod 22 outside the inner rod 22, then the inner rod 22 is fixedly connected with the top beam, the joist, the top beam and the joist of the row bracket or the protective sleeve of the joist and the telescopic strut at the same time, the rear end of the sleeve rod 21 is sleeved outside the inner rod 22, and the front end of the sleeve rod 21 is fixedly connected with the connecting beam 27 or the anchor hole drilling machine directly; the sliding driving device can be arranged inside the inner rod 22 and the sleeve rod 21, and can also be fixed outside the sleeve rod 21 and the inner rod 22, so long as the relative sliding of the inner rod 22 and the sleeve rod 21 can be realized, the fixed end of the sliding driving device is fixedly connected with the rod which is relatively fixed, and the driving end is fixedly connected with the rod which is relatively sliding. Fig. 6 shows that the slide driving means is fixed inside the loop bar 21 and the inner bar 22.

In the embodiment shown in fig. 5 and 6, the telescopic mechanisms are preferably even in number and symmetrical about the midline of the tandem tunneling self-moving support, and are as close to two side parts of the tandem tunneling self-moving support as possible, so that the passage of other equipment below the tandem tunneling self-moving support is not affected.

The following describes an advancing method and a drilling method of a tandem tunneling self-moving bracket of the anchor hole drilling machine of the embodiment:

the heading machine heading a certain distance in front of the support, and then the combined tunneling self-moving support moves forward, and the specific forward moving method comprises the following steps: the telescopic support below one of the row-type supports is contracted to separate the row-type support from the support on the top surface of the working surface, at the moment, the other row-type support provides supporting force for the row-type support, the row-type support can slide relative to the other row-type support under the pushing action of the hydraulic pushing cylinder, forward movement is realized, after the movement, the telescopic support of the row-type support can extend to play a supporting role, and the other row-type support moves forward in the same way. The top beams of the two row-type brackets are distributed alternately, so that when one row-type bracket moves forwards, the other row-type bracket can still uniformly support the top surface of the working surface, and the condition of large-area empty top does not occur. The front cantilever is positioned in front of the row type support for supporting, the anchor hole drilling machine firstly drills a first row of anchor holes above the machine, then the telescopic mechanism drives the anchor hole drilling machine to move forwards for a certain distance, the anchor hole drilling machine drills a second row of holes, the telescopic mechanism drives the anchor hole drilling machine to move forwards for a certain distance, and the anchor hole drilling machine drills a third row of holes until the anchor hole drilling machine drills a plurality of rows of holes at one time; the tunneling machine continues tunneling forward for a plurality of times, the bracket moves forward for a plurality of times, the anchor hole drilling machine drills a plurality of rows of holes at one time, and the process is repeated.

By means of the telescopic movement of the anchor hole drilling machine relative to the row type support, if the telescopic mechanism can move forwards by one step distance with the anchor hole drilling machine, the tunneling process of two tunneling and one anchor can be completed. If the telescopic mechanism can move forwards by two steps, the tunneling process of three tunneling and one anchoring can be realized, and the working efficiency is greatly improved. Moreover, the supporting effect of the row type bracket is not affected at all.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, a description referring to the terms "present embodiment," "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any at least one embodiment or example. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

The above description is only of the preferred embodiments of the present utility model, and is not intended to limit the utility model, but any modifications, equivalents, and simple improvements made within the spirit of the present utility model should be included in the scope of the present utility model.

Claims

1. The utility model provides a take anchor eye rig's row formula tunneling from moving support, including two row formula supports (1) that the structure is the same, every row formula support (1) includes two at least back timber (11) and two at least joists (12), back timber (11) and joist (12) are alternately arranged, back timber (11) are located the top of joist (12), the both ends below about every row formula support (1) are equipped with telescopic pillar (13), two row formula supports (1) have the interval, back timber (11) of two row formula supports (1) alternate distribution, joist (12) of two row formula supports (1) alternate distribution, be provided with hydraulic propulsion jar (14) between adjacent joist (12), hydraulic propulsion jar (14) are used for advancing two row formula supports (1) relatively, the front end of back timber (11) articulates or fixedly connected with front beam (15); it is characterized in that the method comprises the steps of,

the front of the joist (12) at the forefront end is provided with an anchor hole drilling machine, the anchor hole drilling machine is connected with one of the row-type brackets (1) through a telescopic mechanism, the telescopic direction of the anchor hole drilling machine is parallel to the forward moving direction of the row-type brackets (1), and the telescopic mechanism is fixed below the row-type brackets (1).

2. The tandem tunneling self-moving support with anchor hole drilling machine according to claim 1, wherein the telescopic mechanism comprises a telescopic rod (2), one end of the telescopic rod (2) is connected with one of the tandem brackets, the other end of the telescopic rod (2) is connected with the anchor hole drilling machine, and the telescopic rod (2) is parallel to the advancing direction of the tandem support (1).

3. The combined tunneling self-moving support with the anchor hole drilling machine according to claim 2, wherein one end of the telescopic rod (2) is fixedly connected with a top beam (11) and/or a joist (12) of the combined tunneling self-moving support (1).

4. The tandem tunneling self-moving support with anchor hole drilling machine according to claim 2, wherein a protective sleeve is arranged outside the telescopic support column (13), and the telescopic rod (2) close to the protective sleeve is fixedly connected with the joist (12) and the protective sleeve at the same time.

5. The tandem tunneling self-moving support with anchor hole drilling machine according to claim 2, wherein the telescopic rod (2) is an electric telescopic rod, a hydraulic telescopic rod or an air telescopic rod.

6. The combined tunneling self-moving support with the anchor hole drilling machine according to claim 1, wherein the telescopic mechanism comprises a sleeve rod (21), an inner rod (22) and a sliding driving device, the sleeve rod (21) is slidably sleeved outside the inner rod (22), one of the sleeve rod (21) and the inner rod (22) is fixedly connected with the combined tunneling self-moving support with the anchor hole drilling machine, the other of the sleeve rod and the inner rod is fixedly connected with the anchor hole drilling machine, and the sliding driving device is respectively connected with the sleeve rod (21) and the inner rod (22) and drives a rod connected with the anchor hole drilling machine to slide relative to the other rod.

7. The self-moving support for tandem tunneling of the anchor hole drilling machine according to claim 6, wherein the sliding driving device is an electric push rod, a pneumatic cylinder or a hydraulic cylinder.

8. The tandem tunneling self-moving support with anchor hole drilling machine according to any one of claims 1-7, characterized in that the number of telescopic mechanisms is at least two, the front ends of the telescopic mechanisms are connected through a connecting beam (27), the anchor hole drilling machine is fixed on the connecting beam (27), and the connecting beam (27) is positioned in front of the foremost joist (12).