CN220815707U

CN220815707U - Combined shield support

Info

Publication number: CN220815707U
Application number: CN202322369865.2U
Authority: CN
Inventors: 闫忠明
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-09-01
Filing date: 2023-09-01
Publication date: 2024-04-19
Anticipated expiration: 2033-09-01

Abstract

The utility model provides a combined shield support, which is applied to the technical field of shield support groups, and the technical scheme is as follows: comprises a supporting base and an accompanying base; the first supporting plate is arranged on the supporting base and is driven by the first vertical driving group to vertically slide so as to support the top plate; the second supporting plate is arranged on the supporting base and is driven by the second vertical driving group to vertically slide so as to support the top plate; a height difference is arranged between the first supporting plate and the second supporting plate; one end of the horizontal driving piece is arranged on the accompanying base, the other end of the horizontal driving piece is arranged on the supporting base and is used for alternately advancing the supporting base and the accompanying base; the supporting frame is movably connected to the accompanying base and is driven by the accompanying driving piece to stretch and retract so as to support the top plate; the method has the technical effects that: simple structure is applicable to the triangular region of roof height unevenness to need not external force to realize moving certainly in turn, the empty top condition does not appear in the roof when the antedisplacement, safer, firm.

Description

Combined shield support

Technical Field

The utility model relates to the technical field of shield support sets, in particular to a combined shield support.

Background

Coal is the most predominant solid fuel, one of the combustible organic rocks; the plant is formed by gradually accumulating a plurality of plants growing in a certain geologic period into a thick layer in a proper geologic environment, burying the thick layer in water bottom or sediment, and performing natural coalification in the long geologic period; the most productive coal in the formations of the carbolic, di-lap, dwarfism and third phases is an important coal-producing age in every geological period of the world. The carbon content of the coal is 46-97%, and the coal is brown to black and has dull to metallic luster;

Most coal mines in China belong to underground coal mines; today under the rapid development of technology, a hydraulic support, a scraper conveyor and the like are used as main equipment for modern fully-mechanized mining production, and the speed of transportation, installation and withdrawal is an important link for ensuring the continuous production of mines on the stoping face of the coal mine; in underground coal mine, after fully-mechanized mining face is mined, the hydraulic support is required to be removed and carried and is installed in a new fully-mechanized mining face, and in the hydraulic support removing link, the most difficult and dangerous is the problem of supporting the triangular area on the side of the old pond after the hydraulic support is removed; because the top plate of the triangular area is different in height, the height of the top plate close to the bottom of the top plate of the old pond and the height of the top plate close to the top plate of the main withdrawal channel are high, the supporting problem of the triangular area is difficult, the current domestic triangular area supporting mainly adopts a single body and wood pile mode for supporting, no support for supporting the special structure of the triangular area is available in the market, and the supporting difficulty is increased.

Disclosure of utility model

The utility model aims to provide a combined shield support, which has the advantages of simple structure and convenient installation; the movable type lifting device is suitable for triangular areas with uneven top plates, the alternating self-moving is realized without external force, the top plates do not have empty top conditions when moving forwards, and the movable type lifting device is safer and firmer.

To achieve the above and other related objects, the present utility model provides the following technical solutions:

the combined shield support comprises a support base and an accompanying base;

The first supporting plate is arranged on the supporting base and is driven by the first vertical driving group to vertically slide so as to support the top plate;

the second supporting plate is arranged on the supporting base and is driven by the second vertical driving group to vertically slide so as to support the top plate;

a height difference is arranged between the first supporting plate and the second supporting plate;

One end of the horizontal driving piece is arranged on the accompanying base, the other end of the horizontal driving piece is arranged on the supporting base and is used for alternately advancing the supporting base and the accompanying base;

And a supporting frame movably connected to the accompanying base and driven by the accompanying driving member to extend and retract so as to support the top plate.

Through the technical scheme, the support base is contacted with the ground, so that the stability of the bracket is improved; the first vertical driving group is used for driving the first supporting plate to support the top plate at a lower position, and the second vertical driving group is used for driving the first supporting plate to support the top plate at a higher position; the height difference is arranged between the first support plate and the second support plate, so that the support can be suitable for triangular areas with uneven top plates, the area of a goaf is reduced, the dangerous operation of the empty tops of workers and the special operation of broken or top leakage of the top plates are avoided, the safety and firmness are improved, and the personal safety of the workers is ensured;

The horizontal driving piece drives the support base to horizontally slide, so that the automatic movement of the support is realized; the accompanying driving piece drives the supporting frame to stretch and retract, so that the supporting frame supports the top plate or withdraws the top plate; when the support moves, the first vertical driving group drives the first support plate to move upwards and support the top plate positioned at a lower position, the second vertical driving group drives the second support plate to move upwards and support the top plate positioned at a higher position, and the driving piece drives the support frame to stretch and support the top plate; then the first and second vertical driving groups drive the first and second support plates to descend and withdraw from the top plate, the horizontal driving assembly drives the support base to move forwards, the first and second vertical driving groups drive the first and second support plates to move upwards and support the top plate again, and the support frame withdraws from the top plate along with the shrinkage of the support frame driven by the driving piece; the horizontal driving piece drives the accompanying base to move forward to be positioned between the first supporting plate and the second supporting plate, and the accompanying driving piece drives the supporting frame to stretch again and support the top plate; reciprocating movement is advanced; and further realize automatic movement, need not to leave the top when removing, safer, firm.

In an embodiment of the utility model, the supporting base is of a U-shaped structure, and the first vertical driving set and the second vertical driving set are respectively disposed at two sides of the supporting base.

In an embodiment of the utility model, an elevating block is integrally formed on the upper end surface of the support base, and a height difference is formed between the upper end surface of the elevating block and the upper end surface of the support base;

The first vertical driving group comprises a first vertical oil cylinder a fixed at the upper part of the supporting base and a first vertical oil cylinder b fixed at the upper part of the heightening block; piston rods of the first vertical oil cylinder a and the first vertical oil cylinder b are fixed at the bottom of the first supporting plate;

the second vertical driving group comprises a second vertical oil cylinder a fixed at the upper part of the supporting base and a second vertical oil cylinder b fixed at the upper part of the heightening block; piston rods of the second vertical oil cylinder a and the second vertical oil cylinder b are fixed at the bottom of the second supporting plate;

The height difference of piston rods extending out of the first vertical oil cylinder a, the first vertical oil cylinder b, the second vertical oil cylinder a and the second vertical oil cylinder b is equal to the height of the heightening block.

Through the technical scheme, the heightening block is used for increasing the height of the supporting seat, so that a small-sized oil cylinder can be selected, and the cost is reduced; the piston rods of the first vertical oil cylinder a and the first vertical oil cylinder b are fixed at the bottom of the first supporting plate and used for supporting the first supporting plate; the piston rods of the second vertical oil cylinder a and the second vertical oil cylinder b are fixed at the bottom of the second supporting plate and used for supporting the second supporting plate, and the height difference of the piston rods extending out of the first vertical oil cylinder a and the first vertical oil cylinder b and the second vertical oil cylinder a and the second vertical oil cylinder b is equal to the height of the heightening block, so that the first supporting plate and the second supporting plate are parallel to the horizontal plane, and the top plate at a higher or lower position can be supported more stably; therefore, the support can be suitable for triangular areas with uneven top plates, the support is firmer and safer, and the phenomenon of empty top can not occur.

In an embodiment of the present utility model, two sides of the supporting base are provided with link mechanisms, and the two link mechanisms are respectively connected with the first supporting plate and the second supporting plate;

The connecting rod mechanism comprises a first connecting rod, a second connecting rod and an upper fixing seat, wherein the lower fixing seat is fixed on the supporting base, the first connecting rod is hinged with the lower fixing seat, the second connecting rod is hinged with the first connecting rod, and the upper fixing seat is hinged with the second connecting rod;

The upper fixing seat is fixed on the first support plate or the second support plate.

Through above-mentioned technical scheme, link mechanism makes first, the first backup pad of second vertical drive group drive and second backup pad motion more steady to link mechanism can support first backup pad and second backup pad, makes first backup pad and second backup pad support roof can bear bigger pressure, and is firm more, safe.

In one embodiment of the present utility model, the support frame includes a link group hinged with the accompanying base, a side beam hinged with the link group, and a support plate hinged with the side beam;

One end of the accompanying driving piece is hinged to the accompanying base, and the other end of the accompanying driving piece is hinged to the supporting plate;

One end of the first driving piece is hinged with the accompanying base, and the other end of the first driving piece is hinged with the connecting rod group;

one end of the second driving piece is hinged on the side beam, and the other end of the second driving piece is hinged with the supporting plate.

Through above-mentioned technical scheme, the backup pad is used for the roof, and through link set, curb girder connection companion base and backup pad, when companion driving piece drive backup pad moved, the backup pad motion was more stable, and the backup pad supports the roof and can bear bigger pressure, more firm, safety.

In one embodiment of the present utility model, the linkage includes a front link and a rear link,

The front connecting rod and the rear connecting rod are both arranged in parallel.

Through above-mentioned technical scheme, two preceding connecting rods of parallel arrangement respectively and back connecting rod are used for strengthening the support frame, make the support frame can bear bigger pressure.

In an embodiment of the utility model, an auxiliary support plate for increasing the length of the support plate is telescopically arranged on one side of the support plate away from the side beam;

The support plate both sides are all scalable to be provided with the auxiliary side board that increases the backup pad width.

Through above-mentioned technical scheme, supplementary extension board is used for increasing the length of backup pad, and supplementary curb plate is used for increasing backup pad width to can increase the backup pad and support the area of top board, make to support more stable.

In an embodiment of the utility model, a chute is arranged at the bottom of the supporting plate; the supporting plate is connected with the auxiliary supporting plate through an auxiliary driving piece, and the auxiliary driving piece drives the auxiliary supporting plate to slide in the chute;

The bottoms of the two sides of the supporting plate are respectively provided with a side plate driving piece for driving the auxiliary side plates to slide along the width direction of the supporting plate.

Through the technical scheme, the auxiliary driving piece is used for driving the supporting plate to slide in the chute, and the side plate driving piece is used for driving the auxiliary side plates at two sides of the supporting plate; the auxiliary driving piece drives the supporting plate to slide out of the sliding groove, and the side plate driving piece drives the auxiliary side plates on two sides to extend out, so that the supporting area of the supporting plate is increased, and the flexibility of the device is improved.

In an embodiment of the present utility model, an opening is formed in a middle position of a side wall of the supporting base, and a push-pull rod extending from the opening to an outer side of the supporting base is movably connected to the middle position of the accompanying base; one end of the push-pull rod is hinged with the first driving piece (23);

And a jacking driving piece for driving the push-pull rod to move up and down is fixed on the side wall of the support base above the opening.

In an embodiment of the utility model, baffles are fixed on two sides of the supporting base.

Through the technical scheme, the baffle is used for blocking coal and avoiding coal from entering the bracket.

As described above, the combined shield support of the present utility model has the following advantageous effects:

1. The operation is simple, and the installation is convenient;

2. The method is suitable for triangular areas with uneven top plates; the area of the goaf is reduced to a great extent, and the probability of collapse of the coal mining top can be greatly reduced when the goaf is subjected to roof caving; the reduction of the empty roof area also improves the safety coefficient of worker operation by one time, thereby avoiding the situations of dangerous operation of the empty roof of the worker and special operation of broken or roof leakage of the top plate, being safer and firmer and ensuring the personal safety of the worker;

3. The automatic stacking device is free from external force to realize alternate automatic movement, free from manual handling of single bodies and stacking of wood piles, and high in safety coefficient; the labor intensity of workers is reduced, and the cost of withdrawing and coal mining can be reduced to a great extent;

4. The efficiency is higher, the construction period is shorter, the succession of working faces is ensured, and the coal mining cost is further reduced.

Drawings

FIG. 1 is a schematic view of the overall structure of a left front view of an embodiment of the present utility model;

FIG. 2 is a schematic view of the overall structure of the right rear view of the embodiment of the present utility model;

FIG. 3 is a partial cross-sectional view of the overall structure of an embodiment of the present utility model;

FIG. 4 is a schematic view of the overall construction of a removable baffle and an extension baffle according to an embodiment of the present utility model;

FIG. 5 is a schematic view illustrating a structural relationship between a support frame and a support base according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram illustrating the structural relationship between a base plate and a supporting frame according to an embodiment of the present utility model;

FIG. 7 is a schematic diagram showing the structural relationship between a support base and a push-pull rod according to an embodiment of the present utility model.

Reference numerals: 1. a support base; 2. a companion base; 3. a first vertical driving group; 301. a first vertical cylinder a; 302. a first vertical cylinder b; 6. a first support plate; 7. a second vertical driving group; 71. a second vertical cylinder a; 72. a second vertical cylinder b; 10. a second support plate; 11. a horizontal driving member; 12. an accompanying drive; 13. a support frame; 14. a heightening block; 15. a link mechanism; 151. a lower fixing seat; 152. a first link; 153. a second link; 154. an upper fixing seat; 131. a linkage; 132. a side beam; 133. a support plate; 23. a first driving member; 24. a second driving member; 1311. a front link; 1312. a rear connecting rod; 27. auxiliary support plates; 28. an auxiliary side plate; 29. an auxiliary driving member; 30. a baffle; 31. an extension baffle; 32. a hinge base; 33. opening holes; 34. a push-pull rod; 35. jacking the driving piece; 36. and a connecting frame.

Detailed Description

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.

Please refer to fig. 1 to 7. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the utility model, are not intended to be critical to the essential characteristics of the utility model, but are intended to fall within the spirit and scope of the utility model. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.

Referring to fig. 1 and 2, the present utility model provides a combined shield support, which comprises a support base 1 and an accompanying base 2, wherein the support base 1 contacts with the ground to increase the stability of the support

A first support plate 6 provided on the support base 1 and driven to vertically slide by the first vertical driving group 3 to support the top plate;

a second support plate 10 provided on the support base 1 and driven to vertically slide by the second vertical driving group 7 to support the top plate;

a height difference is arranged between the first support plate 6 and the second support plate 10; the first vertical driving group 3 is used for driving the first supporting plate 6 to support the top plate at the lower position, and the second vertical driving group 7 is used for driving the first supporting plate 6 to support the top plate at the higher position; therefore, the support can be suitable for triangular areas with uneven top plates, the support is more firm and safer, and the phenomenon of empty top can not occur;

A horizontal driving member 11 having one end provided on the accompanying base 2 and the other end provided on the supporting base 1, and for alternately advancing the supporting base 1 and the accompanying base 2; the horizontal driving piece 11 drives the support base 1 to horizontally slide, so that the automatic movement of the bracket is realized;

A supporting frame 13 movably connected to the accompanying base 2 and driven to expand and contract by the accompanying driving member 12 to support the top plate; thereby causing the support bracket 13 to support the top plate or withdraw the top plate.

Referring to fig. 1, 2 and 3, the supporting base 1 of the supporting base 1 has a U-shaped structure, and the first vertical driving set 3 and the second vertical driving set 7 are respectively disposed at two sides of the supporting base 1;

The upper end surface of the supporting base 1 is integrally formed with a heightening block 14, the heightening block 14 is of a U-shaped structure, the lengths of two side edges of the heightening block 14 are smaller than those of the two side edges of the supporting base 1, and a height difference is formed between the upper end surface of the heightening block 14 and the upper end surface of the supporting base 1;

The first vertical driving group 3 comprises a first vertical oil cylinder a301 and a first vertical oil cylinder b302, wherein a cylinder body of the first vertical oil cylinder a301 is fixed on the upper part of one side of the supporting base 1 through bolts, and the first vertical oil cylinder b302 is fixed on the upper part of one side of the heightening block 14 through bolts; the piston rods of the first vertical oil cylinder a301 and the first vertical oil cylinder b302 are fixed at the bottom of the first supporting plate 6 through bolts, and the height difference of the piston rods extending out of the first vertical oil cylinder a301 and the first vertical oil cylinder b302 is equal to the height of the heightening block 14, so that the whole first supporting plate 6 is positioned on the same horizontal plane and is parallel to the supporting base 1;

The second vertical driving group 7 includes a second vertical cylinder a71 and a second vertical cylinder b72; the second vertical cylinder a71 is fixed on the upper part of the other side of the supporting base 1 by bolts, and the second vertical cylinder b72 is fixed on the upper part of the other side of the heightening block 14 by bolts; piston rods of the second vertical cylinder a71 and the second vertical cylinder b72 are fixed at the bottom of the second supporting plate 10 through bolts; the height difference of the piston rods extending from the second vertical cylinder a71 and the second vertical cylinder b72 is equal to the height of the heightening block 14, so that the whole second supporting plate 10 is positioned on the same horizontal plane and is parallel to the supporting base 1; the first support plate 6 and the second support plate 10 are parallel to the horizontal plane;

the first support plate 6 has a smaller set height than the second support plate 10, and can more stably support the top plate at a higher or lower position.

Referring to fig. 1, 2 and 3, baffles 30 are uniformly formed on both sides of the support base 1, and extension baffles 30 are bolted to the two baffles 30, and the distance between the first support plate 6 and the second support plate 10 is smaller than the distance between the two extension baffles 30, so that the first support plate 6 and the second support plate 10 can be lifted between the two baffles 30; wherein the heights of the two extension baffles 30 are not higher than the heights of the first support plate 6 and the second support plate 10 supporting the top plate.

Referring to fig. 4, two sides of the support base 1 are provided with link mechanisms 15, and the two link mechanisms 15 are respectively connected with the first support plate 6 and the second support plate 10; the first and second vertical driving groups 7 are driven by the link mechanism 15 to move the first and second support plates 6 and 10 more stably, and the link mechanism 15 can support the first and second support plates 6 and 10, so that the first and second support plates 6 and 10 can bear larger pressure, and the roof is firmer and safer;

The link mechanism 15 includes a lower fixing base 151 welded and fixed on the support base 1, a first link 152 hinged to the lower fixing base 151, a second link 153 hinged to the first link 152, and an upper fixing base 154 hinged to the second link 153; the upper fixing seat 154 positioned on one side of the first supporting plate 6 is fixed on the first supporting plate 6 through bolts, and the upper fixing seat 154 positioned on one side of the second supporting plate 10 is fixed on the second supporting plate 10 through bolts; in this embodiment, two first connecting rods 152 are hinged on the lower fixing base 151, and the other ends of the two first connecting rods 152 are both hinged on the second connecting rod 153.

Referring to fig. 5 and 6, in this embodiment, two horizontal driving members 11 are disposed in parallel, the horizontal driving members 11 are horizontal cylinders, the cylinder bolts of the horizontal cylinders are fixed on the side wall of the accompanying base 2, the piston rod bolts of the horizontal cylinders are fixed on the inner wall of the side opposite to the opening of the supporting base 1, and the accompanying base 2 is flush with the bottom surface of the supporting base 1.

Referring to fig. 5 and 6, the support frame 13 includes a link group 131 hinged with the accompanying base 2, a side beam 132 hinged with the link group 131, and a support plate 133 hinged with the side beam 132;

Along with the fact that two hinging seats 32 are integrally formed on one side, away from the horizontal driving piece 11, of the base 2, the connecting rod group 131 comprises a front connecting rod 1311 and a rear connecting rod 1312 which are hinged to the same hinging seat 32 respectively, and the front connecting rod 1311 and the rear connecting rod 1312 are arranged in parallel and hinged to the two hinging seats 32 respectively; both sets of front 1311 and rear 1312 links are hinged to side beams 132; a connecting frame 36 is connected between the two groups of front connecting rods 1311 and the rear connecting rods 1312, the connecting frame 36 is movably connected to the hinge base 32, and the connecting frame 36 is used for enabling the two groups of front connecting rods 1311 and the rear connecting rods 1312 to synchronously move;

In the embodiment, two accompanying driving pieces 12 are arranged, the accompanying driving pieces 12 are accompanying oil cylinders, the cylinder bodies of the accompanying oil cylinders are hinged to the upper part of the accompanying base 2, and the piston rods of the accompanying air cylinders are hinged to the bottom of the supporting plate 133; the support plate 133 is disposed in parallel with the first support plate 6 and the second support plate 10.

Referring to fig. 3, 6 and 7, the first driving member 23 is hinged on the base 2, and in this embodiment, the first driving member 23 is a first oil cylinder, a cylinder body of the first oil cylinder is hinged on the connecting frame 36, and a piston rod of the first oil cylinder is hinged on the hinge base 32;

An opening 33 is formed in the middle of the side wall of the support base 1 at the side far away from the support frame 13; a push-pull rod 34 is arranged in the middle of the accompanying base 2, and the push-pull rod 34 is positioned between the two hinging seats 32; one end of the push-pull rod 34 is hinged with a piston rod of the first oil cylinder, and the other end of the push-pull rod 34 extends from the opening 33 to the outer side of the support base 1; a jacking driving piece 35 is fixed on the inner wall of the heightening block 14 above the opening 33 through bolts, the jacking driving piece 35 in the embodiment is a jacking oil cylinder, and a piston rod of the jacking oil cylinder is fixed on the push-pull rod 34 through bolts; when the carriage moves, the jack cylinder piston rod contracts and the push-pull rod 34 lifts out of contact with the ground.

The side beam 132 is hinged with the second driving piece 24, the second driving piece 24 in the embodiment is a second oil cylinder, the cylinder body of the second oil cylinder is hinged at the middle part of the side beam 132, the piston rod of the second oil cylinder is hinged at the middle part of the supporting plate 133, the accompanying base 2 and the supporting plate 133 are connected through the connecting rod group 131 and the side beam 132, when the supporting plate 133 is driven to move by the accompanying driving piece 12, the supporting plate 133 moves more stably, and the supporting plate 133 can bear larger pressure.

Referring to fig. 3, an auxiliary support plate 27 is telescopically arranged on a side of the support plate 133 away from the side beam 132, and the auxiliary support plate 27 is used for increasing the length of the support plate 133; a chute is arranged at the bottom of the supporting plate 133; the auxiliary support plate 27 is positioned in the chute; two auxiliary driving pieces 29 are arranged at the bottom of the supporting plate 133 in parallel, the auxiliary driving pieces 29 in the embodiment are auxiliary oil cylinders, cylinder bolts of the auxiliary oil cylinders are fixed at the bottom of the supporting plate 133, piston rod bolts of the auxiliary oil cylinders are fixed on the auxiliary supporting plates 27, and the auxiliary oil cylinders drive the auxiliary supporting plates 27 to slide in the sliding grooves;

Auxiliary side plates 28 for increasing the width of the support plate 133 are telescopically arranged on both sides of the support plate 133, and side plate driving pieces for driving the auxiliary side plates 28 to slide along the width direction of the support plate 133 are arranged at the bottoms of both sides of the support plate 133; the section of the auxiliary side plate 28 is L-shaped, the auxiliary side plate 28 comprises a horizontal plate and a vertical plate, and the horizontal plate and the vertical plate are mutually vertical and are integrally formed; the horizontal plate is erected on the upper end face of the supporting plate 133; in the embodiment, three side plate driving parts are arranged on one side of a supporting plate 133, the side plate driving parts are side plate oil cylinders, cylinder body bolts of the side plate oil cylinders are fixed on the supporting plate 133, and piston rod bolts of the side plate oil cylinders are fixed on a vertical plate;

When the supporting area of the supporting plate 133 needs to be increased, the auxiliary cylinder drives the supporting plate 133 to slide out of the sliding groove, and the side plate cylinders drive the two auxiliary side plates 28 to spread towards the two sides of the supporting plate 133.

The use process is briefly described: when the bracket moves, the first vertical driving group 3 drives the first supporting plate 6 to move upwards and support the top plate positioned at a lower position, the second vertical driving group 7 drives the second supporting plate 10 to move upwards and support the top plate positioned at a higher position, and the driving piece 12 drives the supporting frame 13 to stretch and support the top plate; then the first and second vertical driving groups 7 drive the first support plate 6 and the second support plate 10 to descend and withdraw from the top plate, the horizontal driving assembly drives the support base 1 to move forwards, the first and second vertical driving groups 7 drive the first support plate 6 and the second support plate 10 to move upwards and support the top plate again, and the support frame 13 withdraws from the top plate along with the shrinkage of the support frame 13 driven by the driving piece 12; the horizontal driving member 11 drives the accompanying base 2 to move forward to be positioned between the first supporting plate 6 and the second supporting plate 10, and the accompanying driving member 12 drives the supporting frame 13 to extend again and support the top plate; the reciprocating motion advances.

In conclusion, the utility model is suitable for triangular areas with uneven top plates, and the alternating self-movement is realized without external force; the area of the goaf is reduced to a great extent, and the probability of collapse of the coal mining top can be greatly reduced when the goaf is subjected to roof caving; the reduction of the empty roof area also improves the safety coefficient of worker operation by one time, thereby avoiding the situations of dangerous operation of the empty roof of the worker and special operation of broken or roof leakage of the top plate, being safer and firmer and ensuring the personal safety of the worker; therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims

1. A combination type shield support, which is characterized in that: comprises a supporting base (1) and an accompanying base (2);

the first supporting plate (6) is arranged on the supporting base (1) and is driven by the first vertical driving group (3) to vertically slide so as to support the top plate;

a second support plate (10) arranged on the support base (1) and driven by a second vertical driving group (7) to vertically slide so as to support the top plate;

A height difference is arranged between the first supporting plate (6) and the second supporting plate (10);

a horizontal driving member (11) with one end arranged on the accompanying base (2) and the other end arranged on the supporting base (1) and used for alternately advancing the supporting base (1) and the accompanying base (2);

And a supporting frame (13) which is movably connected with the accompanying base (2) and is driven by the accompanying driving piece (12) to stretch and retract so as to support the top plate.

2. A modular shield support according to claim 1, wherein: the support base (1) is of a U-shaped structure, and the first vertical driving group (3) and the second vertical driving group (7) are respectively arranged on two sides of the support base (1).

3. A modular shield support according to claim 2, wherein: the upper end face of the supporting base (1) is integrally formed with a heightening block (14), and a height difference is formed between the upper end face of the heightening block (14) and the upper end face of the supporting base (1);

The first vertical driving group (3) comprises a first vertical oil cylinder a (301) fixed at the upper part of the supporting base (1) and a first vertical oil cylinder b (302) fixed at the upper part of the heightening block (14); piston rods of the first vertical oil cylinder a (301) and the first vertical oil cylinder b (302) are fixed at the bottom of the first supporting plate (6);

The second vertical driving group (7) comprises a second vertical oil cylinder a (71) fixed at the upper part of the supporting base (1) and a second vertical oil cylinder b (72) fixed at the upper part of the heightening block (14); piston rods of the second vertical oil cylinder a (71) and the second vertical oil cylinder b (72) are fixed at the bottom of the second supporting plate (10);

the height difference of piston rods of the first vertical oil cylinder a (301), the first vertical oil cylinder b (302), the second vertical oil cylinder a (71) and the second vertical oil cylinder b (72) is equal to the height of the heightening block (14).

4. A modular shield support according to claim 3, wherein: the two sides of the supporting base (1) are provided with connecting rod mechanisms (15), and the two connecting rod mechanisms (15) are respectively connected with the first supporting plate (6) and the second supporting plate (10);

the connecting rod mechanism (15) comprises a lower fixed seat (151) fixed on the supporting base (1), a first connecting rod (152) hinged with the lower fixed seat (151), a second connecting rod (153) hinged with the first connecting rod (152) and an upper fixed seat (154) hinged with the second connecting rod (153); the upper fixing seat (154) is fixed on the first support plate (6) or the second support plate (10).

5. A modular shield support according to claim 2, wherein: the support frame (13) comprises a connecting rod group (131) hinged with the accompanying base (2), a side beam (132) hinged with the connecting rod group (131) and a support plate (133) hinged with the side beam (132);

One end of the accompanying driving piece (12) is hinged on the accompanying base (2), and the other end of the accompanying driving piece is hinged on the supporting plate (133);

One end of the first driving piece (23) is hinged with the accompanying base (2), and the other end of the first driving piece (23) is hinged with the connecting rod group (131);

One end of the second driving piece (24) is hinged on the side beam (132), and the other end of the second driving piece (24) is hinged with the supporting plate (133).

6. A modular shield support according to claim 5, wherein: the connecting rod group (131) comprises a front connecting rod (1311) and a rear connecting rod (1312),

The front connecting rod (1311) and the rear connecting rod (1312) are arranged in parallel.

7. A modular shield support according to claim 5, wherein: an auxiliary support plate (27) for increasing the length of the support plate (133) is telescopically arranged on one side, away from the side beam (132), of the support plate (133);

Auxiliary side plates (28) for increasing the width of the supporting plate (133) are telescopically arranged on two sides of the supporting plate (133).

8. A modular shield support according to claim 7, wherein: a sliding groove is formed in the bottom of the supporting plate (133); the supporting plate (133) is connected with the auxiliary supporting plate (27) through an auxiliary driving piece (29), and the auxiliary driving piece (29) drives the auxiliary supporting plate (27) to slide in the chute;

the bottoms of the two sides of the supporting plate (133) are respectively provided with a side plate driving piece for driving the auxiliary side plates (28) to slide along the width direction of the supporting plate (133).

9. A modular shield support according to claim 5, wherein: an opening (33) is formed in the middle of the side wall of the supporting base (1), and a push-pull rod (34) extending from the opening (33) to the outer side of the supporting base (1) is movably connected to the middle of the accompanying base (2); one end of the push-pull rod (34) is hinged with the first driving piece (23);

A jacking driving piece (35) for driving the push-pull rod (34) to move up and down is fixed on the side wall of the supporting base (1) above the opening (33).

10. A modular shield support according to claim 1, wherein: baffle plates (30) are fixed on two sides of the supporting base (1).