CN213807715U - Temporary support device for tunneling - Google Patents

Abstract

The utility model provides a tunnelling temporary support device, solves the needs shut down the operation that prior art exists, and tunnelling efficiency is low, and the security is poor, seriously influences the problem of tunnelling job schedule. Including the fore-stock of strutting that links to each other through advancing mechanism and strut the after-poppet, its characterized in that: the front support frame and the rear support frame are respectively composed of lateral support bases arranged on two sides of the lower portion of the front support frame and an upper lifting top beam arranged on the upper portion of the rear support frame, and lifting mechanisms are respectively arranged between the lateral support bases on the two sides and two end portions of the upper lifting top beam; the upper lifting top beam and the side supporting bases on the two sides enclose to form a tunneling operation space; the top of the front support is provided with a top anchor working space, and an anchor assisting working space is arranged between the front support and the rear support. The device has reasonable design and compact structure, can be matched with tunneling machinery for operation, can perform timely temporary support on a top plate exposed during tunneling, is convenient for permanent support operation, and realizes the parallel operation of tunneling, temporary support and permanent support.

Description

Temporary support device for tunneling

Technical Field

The utility model belongs to the technical field of the tunnelling equipment, a temporary support device of rectangle tunnelling operation is related to, especially one kind with tunnelling machinery cooperation operation, can do timely temporary support to the roof that the tunnelling exposes to be convenient for carry out the permanent support operation, can realize tunnelling, temporary support and permanent support parallel operation's tunnelling temporary support device.

Background

In mining, particularly in underground mining of coal mines, the traditional support mode needs to carry out bolting operation by manpower or a bolting drill carriage under the condition that a tunneling device is stopped after the tunneling device finishes cutting. According to the traditional operation mode, the tunneling efficiency of the tunneling device can only be brought to 20% -25%, the footage of one-time tunneling cannot be too large no matter the surrounding rock conditions of the tunneling roadway, otherwise, accidents such as rib stripping and roof collapse can be met, the safety is poor, and the progress of tunneling work is seriously influenced. Therefore, the temporary support method and the temporary support device for the tunneling of the underground coal mining roadway in the prior art need to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to above-mentioned problem, provide one kind with tunnelling machinery cooperation operation, can do timely temporary support to the roof that the tunnelling exposes to be convenient for carry out the permanent shoring operation, can realize tunnelling, temporary support and permanent shoring parallel operation's tunnelling temporary support device.

The utility model adopts the technical proposal that: this tunnelling temporary support device is including strutting the front stall, its characterized in that: a rear support frame is arranged behind the front support frame, and the rear support frame is connected with the front support frame through a pushing mechanism; the front support frame and the rear support frame are respectively composed of lateral support bases arranged on two sides of the lower portion of the front support frame and an upper lifting top beam arranged on the upper portion of the rear support frame, and lifting mechanisms are respectively arranged between the lateral support bases on the two sides and two end portions of the upper lifting top beam; the upper lifting top beam, the side supporting bases on two sides and the lifting mechanism enclose to form a middle tunneling operation space; and the top of the front support is provided with a top anchor working space, and an anchor side working space is arranged between the front support and the rear support.

The support front frame comprises front frame bases arranged on two sides of the lower portion of the support front frame respectively, front frame side box bodies are arranged above the front frame bases on the two sides respectively, and the lower portions of the front frame side box bodies are connected with the upper portions of the front frame bases through lifting mechanisms; front frame front top beams are arranged between the upper ends of the front parts of the front frame side box bodies on the two sides, and front frame rear top beams are arranged between the rear parts of the front frame front top beams and the upper ends of the rear parts of the front frame side box bodies on the two sides; and a top anchor operation space is arranged between the front top beam of the front frame and the rear top beam of the front frame. The front frame side box bodies on two sides, the front frame front top beams and the front frame rear top beams arranged on the front frame side box bodies are driven to lift through a lifting mechanism, and therefore effective support for a top plate of a driving roadway is formed; meanwhile, the operations of installing an anchor net, setting an anchor rod and the like can be carried out in an anchor operating space reserved between the front top beam of the front frame and the rear top beam of the front frame.

The front frame front top beam is composed of a front top beam main body, and the left end and the right end of the front top beam main body are respectively connected with the front top beam connecting parts at the upper ends of the corresponding front frame side box bodies through front top beam connecting lug plates. The roadway roof newly exposed at the heading position of the roadway after cutting in the tunneling operation is timely supported by utilizing the integral structure of the front top beam main body of the front frame front top beam.

A supporting net shielding mechanism is movably arranged in the top anchor operation space between the front top beam of the front frame and the rear top beam of the front frame; the net supporting and shielding mechanism is movably connected with a front top beam of the front frame through a shielding connecting part. According to the actual situation, a supporting net shield mechanism arranged in the top anchor operation space is utilized to assist the operation of loading the anchor net; and further supporting the roadway roof cut by the tunneling operation.

The front frame rear top beam is composed of a rear top beam main body, a plurality of groups of top plate contact convex beams are arranged on the upper side of the rear top beam main body, and a top anchor avoiding interval is arranged between two adjacent groups of top plate contact convex beams; the left end and the right end of the rear top beam main body are respectively connected with the ear plates through rear top beams and are connected with rear top beam connecting parts at the upper ends of the corresponding front frame side box bodies. When in time supporting the roadway roof, the roof anchor on the front frame rear top beam and between two adjacent groups of roof contact convex beams avoids the interval, so that the damage to the drilled roof anchor rod in the process of supporting the roof by the front frame rear top beam is avoided.

The support rear frame comprises rear frame bases arranged on two sides of the lower portion of the support rear frame respectively, rear frame side box bodies are arranged above the rear frame bases on the two sides respectively, and the lower portions of the rear frame side box bodies are connected with the upper portion of the rear frame base through lifting mechanisms; a rear frame top beam is arranged between the upper ends of the rear frame side box bodies on the two sides. The lifting mechanism is utilized to respectively drive the rear frame side box bodies on the two sides and the rear frame top beam on the rear frame side box bodies to lift, so that effective support for a top plate of a driving roadway is formed; and moreover, the operation of driving the side anchor rod can be carried out in the anchor rod operation space reserved between the front support and the rear support.

The rear frame top beam is composed of a plurality of groups of rear frame top beam cross beams transversely arranged between the upper ends of the rear frame side box bodies on the two sides, and a plurality of groups of rear frame top beam consequent beams longitudinally arranged along the extending direction of the roadway are arranged on the rear frame top beam cross beams of each group. Supporting the top plate of the driving roadway by a plurality of groups of rear frame top beam beams and rear frame top beam consequent beams which are arranged in a criss-cross manner; and effectively avoid the damage to the top anchor rod which is already arranged in the process of supporting the top plate by the top beam of the rear frame.

The rear frame top beam is composed of a rear frame beam main body, and the left end and the right end of the rear frame beam main body are respectively connected with the rear frame beam connecting parts at the upper ends of the corresponding rear frame side box bodies through rear frame beam connecting lug plates. The rear frame beam main body of the rear frame top beam is utilized to play a role in supporting and balancing the whole structure of the rear frame top beam.

The rear frame top beam is composed of a rear frame front beam main body, and the lower side of the rear frame front beam main body is connected with the lug plate through the rear frame front beam and is connected with a rear frame front beam connecting part arranged on the upper side of the corresponding rear frame top beam cross beam; and an anchor block avoiding interval is arranged between the two adjacent groups of rear frame top beams. When the roadway roof is supported in time, the roof anchor avoiding interval between the two adjacent groups of rear frame roof beams on the rear frame roof beams is utilized to further avoid the damage to the constructed roof anchor rod.

The lifting mechanism comprises a lifting hydraulic cylinder and a guide mechanism which are arranged between two end parts of the side supporting base and the upper lifting top beam, and two ends of the lifting hydraulic cylinder are respectively connected with the side supporting base and the upper lifting top beam through a lifting cylinder hinge part; the guide mechanism comprises guide inserting sleeves arranged on the lower sides of two end parts of the upper lifting top beam, and guide inserting columns are arranged on the upper sides of the side supporting bases and the positions corresponding to the guide inserting sleeves. In order to order about respectively through hydraulic cylinder, to strut the upper portion lift back timber of fore-stock and strut the after-poppet and for the lateral part support base upper and lower lift to utilize the cooperation of direction plug bush and direction plug post to connect, lead for the lift of upper portion lift back timber, and then ensure the stationarity of going up and down.

The utility model has the advantages that: because the utility model adopts the front and back support frames, the back support frame is connected with the front support frame through the pushing mechanism; the front support frame and the rear support frame are respectively composed of lateral support bases arranged on two sides of the lower portion of the front support frame and an upper lifting top beam arranged on the upper portion of the rear support frame, and lifting mechanisms are respectively arranged between the lateral support bases on the two sides and two end portions of the upper lifting top beam; the upper lifting top beam, the side supporting bases on two sides and the lifting mechanism are enclosed to form a tunneling operation space; the top of the front support is provided with a top anchor working space, a structural form of an anchor side working space is arranged between the front support and the rear support, therefore, the design is reasonable, the structure is compact, the tunneling temporary support device is separately covered outside the tunneling operation device by utilizing the tunneling operation space in the front support and the rear support which are arranged in the front and the rear, the tunneling temporary support device is separated from the tunneling operation device, the top anchor rod operation device and the side anchor rod operation device, the pushing mechanism drives the front support and the rear support of the portal structure to move forwards circularly so as to continuously drive forwards in coordination with the driving operation, the exposed top plate at the front part of the roadway driving working face is mechanically supported in time, and continuous operation is realized by shield driving operation and permanent support operation, so that the driving rate and the driving efficiency of the driving device are improved, and the safety of the roadway driving working environment is effectively improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a view in the direction a of fig. 1.

Figure 3 is a schematic view of one construction of the timbering foreframe of figure 1.

Fig. 4 is a sectional view taken along line B-B of fig. 3.

Fig. 5 is a schematic view showing a structure of the front frame side case of fig. 3.

Fig. 6 is a schematic view of a structure of the front frame base of fig. 3.

Fig. 7 is a schematic view of a structure of the front frame front header of fig. 3.

Fig. 8 is a side view of fig. 7.

Fig. 9 is a schematic view of a structure of the front frame rear header of fig. 4.

Figure 10 is a schematic view of one construction of the support back frame of figure 1.

Fig. 11 is a side view of fig. 10.

Fig. 12 is a schematic view showing a structure of the rear chassis-side box of fig. 10.

Fig. 13 is a schematic view of a structure of the rear frame base of fig. 10.

Fig. 14 is a schematic illustration of one construction of the rear frame header rail of fig. 11.

Fig. 15 is a schematic view of a structure of the rear frame roof rail of fig. 10.

Fig. 16 is a schematic diagram of an embodiment of the present invention.

The sequence numbers in the figures illustrate: 1 supporting front frame, 2 supporting rear frame, 3 pushing mechanism, 4 sides anchor working space, 5 top anchor working space, 6 supporting net shielding mechanism, 7 tunneling working space, 8 side supporting base, 9 upper lifting top beam, 10 lifting mechanism, 11 front frame base, 12 front frame side box body, 13 front frame lifting hydraulic cylinder, 14 guide mechanism, 15 front frame front top beam, 16 front frame rear top beam, 17 pushing hinged lug plate, 18 front side box body, 19 front top beam connecting part, 20 rear top beam connecting part, 21 lifting cylinder upper hinged part, 22 guide plug bush, 23 tunneling working avoiding inclined plane, 24 front base body, 25 lifting cylinder lower hinged part, 26 guide plug column, 27 front top beam main body, 28 front top beam connecting lug plate, 29 shielding connecting part, 30 rear top beam main body, 31 top beam contact convex beam, 32 top anchor avoiding partition, 33 rear top beam connecting lug plate, 34 rear frame base, 35 rear frame side box body, 36 rear frame lifting hydraulic cylinders, 37 rear frame top beams, 38 rear frame top beam cross beams, 39 rear frame top beam down beams, 40 rear side box bodies, 41 rear frame cross beam connecting parts, 42 rear base bodies, 43 rear frame cross beam bodies, 44 rear frame cross beam connecting lug plates, 45 rear frame down beam connecting parts, 46 rear frame down beam bodies, 47 rear frame down beam connecting lug plates, 48 tunneling operation devices, 49 top anchor rod operation devices and 50 side anchor rod operation devices.

Detailed Description

The specific structure of the present invention will be described in detail with reference to fig. 1 to 16. The temporary tunneling support device comprises a support front frame 1, a support rear frame 2 is arranged behind the support front frame 1, and the support rear frame 2 is connected with the support front frame 1 through a pushing mechanism 3; the cross sections of the front support frame 1 and the rear support frame 2 are both of a portal structure. The support front frame 1 comprises front frame bases 11 respectively arranged on two sides of the lower portion, front frame side box bodies 12 are respectively arranged above the front frame bases 11 on the two sides, and the lower portions of the front frame side box bodies 12 are connected with the upper portions of the front frame bases 11 through lifting mechanisms 10.

A front frame front top beam 15 is arranged between the upper ends of the front parts of the front frame side box bodies 12 on the two sides, and a front frame rear top beam 16 is arranged between the rear part of the front frame front top beam 15 and the upper ends of the rear parts of the front frame side box bodies 12 on the two sides. Meanwhile, an anchor jacking operation space 5 which is convenient for operations such as anchor net installation, anchor jacking and the like is arranged between the front frame front top beam 15 and the front frame rear top beam 16. In addition, a heading operation avoiding slope 23 which facilitates cutting operation of the heading operation device is obliquely arranged at the front end of the front frame side case body 12 on both sides. Therefore, the lifting mechanism 10 respectively drives the front frame side box bodies 12 on two sides and the front frame front top beam 15 and the front frame rear top beam 16 arranged on the front frame side box bodies to lift together so as to form effective support for the top plate of the tunneling roadway; and the operations of bolting and bolting, etc. can be carried out in the roof anchor working space 5 reserved between the front frame front top beam 15 and the front frame rear top beam 16.

The front frame front top beam 15 of the support front frame 1 is composed of a front top beam main body 27 with an integral structure, and the left and right end sides of the front top beam main body 27 are respectively connected with a plurality of groups of front top beam connecting parts 19 at the upper end of the front frame side box body 12 at the corresponding side through a plurality of groups of front top beam connecting lug plates 28; and then the roadway roof newly exposed at the roadway head-on position after cutting in the tunneling operation is supported in time by utilizing the integral structure of the front top beam main body 27 of the front frame front top beam 15. According to the geological conditions of the top plate of the driving tunnel, the front end of a front frame front top beam 15 of the front frame 1 is supported, and a front shield mechanism can be arranged; and the front shield mechanism can adopt a telescopic plug-in type shield structure or a hinged type shield structure which can swing up and down according to specific use requirements. In addition, a supporting net shield mechanism 6 can be movably arranged in the anchor jacking operation space 5 between the front frame front top beam 15 and the front frame rear top beam 16; the trawl door 6 is movably connected with the rear side of the front header main body 27 of the front frame front header 15 through a door connecting part 29. The supporting net shielding mechanism 6 can adopt a structural form of up-and-down swinging or up-and-down lifting. Therefore, according to actual conditions, the supporting net shielding mechanism 6 arranged in the top anchor operation space 5 is utilized to assist the operation of loading the anchor net, and further support the roadway roof cut by the tunneling operation.

The front frame rear top beam 16 for supporting the front frame 1 is composed of a long-strip-shaped rear top beam main body 30, a plurality of groups of top plate contact convex beams 31 are arranged on the upper side of the rear top beam main body 30, and a top anchor avoiding interval 32 is arranged between two adjacent groups of top plate contact convex beams 31. The left and right ends of the rear top beam main body 30 are respectively connected with the rear top beam connecting part 20 at the upper end of the front frame side box body 12 at the corresponding side through rear top beam connecting ear plates 33; when the roadway roof is supported in time, the roof anchor avoiding interval 32 between the two adjacent roof contact convex beams 31 on the front frame rear top beam 16 is utilized to avoid the damage to the drilled roof anchor rod in the roof supporting process of the front frame rear top beam 16.

The lifting mechanism 10 provided between the lower part of the front frame side case 12 and the upper part of the front frame base 11 includes a front frame lifting hydraulic cylinder 13 and a guide mechanism 14, the telescopic end of the front frame lifting hydraulic cylinder 13 is hinged to the front frame side case 12 through a lifting cylinder upper hinge part 21, and the fixed end of the front frame lifting hydraulic cylinder 13 is hinged to the front frame base 11 through a lifting cylinder lower hinge part 25. The guide mechanism 14 comprises guide plug sleeves 22 which are arranged on the lower sides of two end parts of the front frame front top beam 15 and the front frame rear top beam 16 and on the front frame side box body 12; a guide plug column 26 is arranged at the position corresponding to the guide plug sleeve 22 on the upper side of the front frame base 11 at the corresponding side; and then the front frame side box body 12 for supporting the front frame 1 and the front frame front top beam 15 and the front frame rear top beam 16 on the upper part of the front frame 1 are driven to lift up and down relative to the front frame base 11 (the side supporting base 8 for supporting the front frame 1), and the lifting of the upper lifting top beam 9 for supporting the front frame 1 is guided by utilizing the matching connection of the guiding insertion sleeve 22 and the guiding insertion column 26, so that the lifting stability of the supporting front frame 1 is ensured.

The supporting rear frame 2 of the tunneling temporary supporting device comprises rear frame bases 34 respectively arranged on two sides of the lower portion of the supporting rear frame 2, rear frame side box bodies 35 are respectively arranged above the rear frame bases 34 on the two sides, and the lower portions of the rear frame side box bodies 35 are connected with the upper portions of the rear frame bases 34 through lifting mechanisms 10. Meanwhile, a rear frame top beam 37 is further provided between the upper ends of the rear frame side cases 35 on both sides. An anchor operating space 4 for operating the side anchor rod is arranged between the front of the rear support frame 2 and the rear of the front support frame 1. Therefore, the lifting mechanism 10 is used for driving the rear frame side box bodies 35 on two sides and the rear frame top beam 37 on the rear frame side box bodies to lift respectively so as to form effective support for the top plate of the tunneling roadway; in addition, the operation of installing the side anchor rod can be performed in the side anchor operating space 4 reserved between the front support 1 and the rear support 2.

The rear frame top beam 37 of the support rear frame 2 is composed of a plurality of groups of rear frame top beam cross beams 38 transversely arranged between the upper ends of the rear frame side box bodies 35 on the two sides, and a plurality of groups of rear frame top beam consequent beams 39 longitudinally arranged along the extending direction of the roadway are arranged on each group of rear frame top beam cross beams 38; supporting the tunneling roadway roof by a plurality of groups of rear frame top beam cross beams 38 and rear frame top beam longitudinal beams 39 which are arranged in a criss-cross manner; and effectively avoids the damage to the drilled roof bolts in the process of supporting the roof by the roof beam 37 of the rear frame.

The rear frame top beam 38 of the rear frame top beam 37 is composed of a long rear frame beam main body 43, and the left end and the right end of the rear frame beam main body 43 are respectively connected with a plurality of rear frame beam connecting parts 41 at the upper end of the corresponding rear frame side box body 35 through rear frame beam connecting lug plates 44; the rear frame cross member body 43 of the rear frame top cross member 38 is used to support and balance the entire structure of the rear frame top cross member 37. The rear frame roof beam 39 is formed by a long rear frame roof beam main body 46, and the lower side of the rear frame roof beam main body 46 is connected with a rear frame roof beam connecting part 45 correspondingly arranged on the upper side of the corresponding rear frame roof beam 38 through a plurality of groups of rear frame roof beam connecting lug plates 47. And, between two adjacent sets of rear frame roof beam down beams 39, a roof anchor avoiding interval 32 is also provided. Therefore, when the roadway roof is supported in time, the roof anchor avoiding interval 32 between the two adjacent groups of rear frame roof beams 39 on the rear frame roof beams 37 is utilized to further avoid the damage to the drilled roof anchor rods.

The lifting mechanism 10 provided between the lower portion of the rear frame side box body 35 and the upper portion of the rear frame base 34 includes a rear frame lifting cylinder 36 and a guide mechanism 14, the telescopic end of the rear frame lifting cylinder 36 is hinged to the rear frame side box body 35 via a lifting cylinder upper hinge portion 21, and the fixed end of the rear frame lifting cylinder 36 is hinged to the rear frame base 34 via a lifting cylinder lower hinge portion 25. The guiding mechanism 14 includes guiding plug-in sleeves 22 disposed on the lower sides of two end portions of the top beam 37 of the rear frame and on the box body 35 on the side of the rear frame, and guiding plug-in posts 26 disposed on the upper side of the base 34 of the rear frame corresponding to the guiding plug-in sleeves 22. The rear frame side box body 35 for supporting the rear frame 2, and a rear frame top beam cross beam 38 and a rear frame top beam consequent beam 39 arranged on the upper portion of the rear frame side box body are driven to lift up and down relative to the rear frame base 34 (the side supporting base 8 for supporting the rear frame 2), and meanwhile, the lifting of the upper lifting top beam 9 for supporting the rear frame 2 is guided by utilizing the matching connection of the guiding plug-in sleeve 22 and the guiding plug-in column 26, so that the lifting stability of the supporting rear frame 2 is ensured.

A front frame front top beam 15 and a front frame rear top beam 16 of the support front frame 1, as well as a front frame side box body 12, a front frame base 11 and a lifting mechanism 10 at two sides enclose a tunneling operation space 7 at the front part of the device; a rear frame top beam 37 for supporting the rear frame 2, a rear frame side box body 35, a rear frame base 34 and the lifting mechanism 10 on two sides form a tunneling operation space 7 at the rear part of the device. Meanwhile, it can be understood that, according to specific use requirements, the contact surfaces of the front frame front top beam 15 and the front frame rear top beam 16 of the supporting front frame 1 and the rear frame top beam 37 of the supporting rear frame 2 and the roadway roof can be set to be in the shapes of planes, arcs, trapezoids and the like according to the shape of the roadway roof so as to adapt to the tunneling roadway roof conditions of different shapes. The pushing mechanism 3 arranged between the supporting rear frame 2 and the supporting front frame 1 comprises pushing hydraulic cylinders respectively arranged between a front frame side box body 12 and a rear frame side box body 35 on two sides and between a front frame base 11 and a rear frame base 34 on two sides, and two ends of each pushing hydraulic cylinder are respectively connected with the corresponding side box body and the corresponding base through pushing hinged lug plates 17.

When in use, the temporary tunneling support device is arranged in a roadway tunneling working face, and a tunneling operation device 48 (a fully mechanized excavating machine or other tunneling equipment), a top anchor rod operation device 49 and a side anchor rod operation device 50 are arranged in the tunneling operation space 7 of the front support 1 and the rear support 2. Then, the front frame lifting hydraulic cylinder 13 for supporting the front frame 1 and the rear frame lifting hydraulic cylinder 36 for supporting the rear frame 2 are respectively extended, so that the front frame front top beam 15 and the front frame rear top beam 16 for supporting the front frame 1 and the rear frame top beam 37 (composed of a plurality of groups of rear frame top beam cross beams 38 and rear frame top beam consequent beams 39 which are arranged in a criss-cross manner) for supporting the rear frame 2 are contacted with the top plate of the heading tunnel to form the support for the top plate of the heading tunnel. Each pushing hydraulic cylinder of the pushing mechanism 3 connected between the front support 1 and the rear support 2 is in a withdrawing state.

The tunneling operation device 48 starts tunneling, and when the tunneling operation cuts the area of the top of the roadway rock mass, the front end of the front frame front top beam 15 of the front frame 1 is supported, so that a newly exposed top plate at the front end of the roadway can be supported; and if the front end of the front frame front top beam 15 of the supporting front frame 1 is provided with a front shield mechanism, the front shield mechanism is extended or unfolded, so that the supporting area of a newly exposed top plate at the front end of the roadway is increased. When the tunneling operation device 48 needs to continuously cut forwards, all the front frame lifting hydraulic cylinders 13 for supporting the front frame 1 are retracted, and the front frame front top beam 15 and the front frame rear top beam 16 are temporarily separated from the roadway roof; then, the pushing hydraulic cylinders of the pushing mechanism 3 are extended to push the support front frame 1 of the descending frame to move forwards. After the supporting front frame 1 moves to the right position, the front frame lifting hydraulic cylinder 13 of the supporting front frame 1 extends out, so that a front frame front top beam 15 and a front frame rear top beam 16 of the supporting front frame 1 are in contact with a newly cut roadway top plate to form effective support. Then, the rear frame lifting hydraulic cylinder 36 for supporting the rear frame 2 is retracted, and the rear frame top beam consequent beam 39 of the rear frame top beam 37 is temporarily separated from the roadway roof; subsequently, the respective pushing cylinders of the pushing mechanism 3 are retracted, and the support rear frame 2 pulling the lower frame is moved forward. And after the supporting rear frame 2 moves forward to the right position, extending out of a rear frame lifting hydraulic cylinder 36 of the supporting rear frame 2, enabling a rear frame top beam of a rear frame top beam 37 of the supporting rear frame 2 to be in contact with a roadway roof again along a beam 39 to form support, and preparing for roadway cutting of the next distance.

In the process of continuous excavation by the excavation operation device 48, a top anchor rod operation device 49 arranged in the support front frame 1 is used for performing permanent support operation of driving a top anchor rod on a top plate of a newly exposed roadway space in a top anchor operation space 5 reserved at the top of the support front frame 1 and behind a front top beam 15 of the front frame under the shield of the supporting net shield mechanism 6. Meanwhile, by using the anchor rod operation device 50 arranged in the tunneling operation space 7, the permanent support operation of installing anchor rods is performed on the two sides of the newly exposed roadway space in the anchor rod operation space 4 reserved between the front support 1 and the rear support 2.

The tunneling operation is repeated, the supporting front frame 1 moves forwards and pulls the supporting rear frame 2, permanent supporting is carried out on the top of the supporting front frame 1 and between the supporting front frame 1 and the supporting rear frame 2, cut coal and rocks are conveyed out of a tunneling working face, and the like, so that the tunneling operation is carried out under the condition that complete shutdown and backward movement are not needed, the supporting front frame 1 and the supporting rear frame 2 are pushed and pulled by the pushing and moving mechanism 3 to move forwards circularly, and tunneling operation is matched to carry out continuous forward tunneling, time wasted by alternation among different working procedures is reduced, safety guarantee is provided for the supporting operation of workers, and tunneling efficiency is obviously improved. The temporary tunneling support device can ensure that an operator can carry out permanent support operation such as bolting or shed erecting and the like under the shielding of the front support 1 and the rear support 2, the aim that the tunneling operation is not limited by the permanent support operation is realized, the tunneling speed of a roadway can be improved by more than 30 percent, and the situation of continuous and tense mine excavation is effectively relieved. In addition, the temporary tunneling support device can effectively limit and prevent surrounding rock deformation and damage, maintain the integrity of a roadway roof, ensure the effect of permanent support and be beneficial to safety management of a mine roof.

Claims (10)

1. The utility model provides a tunnelling temporary support device, includes support front frame (1), its characterized in that: a rear support frame (2) is arranged behind the front support frame (1), and the rear support frame (2) is connected with the front support frame (1) through a pushing mechanism (3); the front support frame (1) and the rear support frame (2) are both composed of lateral support bases (8) arranged on two sides of the lower portion of the front support frame and an upper lifting top beam (9) arranged on the upper portion of the front support frame, and lifting mechanisms (10) are arranged between the lateral support bases (8) on the two sides and two end portions of the upper lifting top beam (9) respectively; the upper lifting top beam (9), the lateral supporting bases (8) on the two sides and the lifting mechanism (10) enclose to form a middle tunneling operation space (7); and the top of the front support (1) is provided with a top anchor working space (5), and an anchor side working space (4) is arranged between the front support (1) and the rear support (2).

2. A tunneling temporary support device according to claim 1, characterized in that: the support front frame (1) comprises front frame bases (11) arranged on two sides of the lower portion of the support front frame respectively, front frame side box bodies (12) are arranged above the front frame bases (11) on the two sides respectively, and the lower portions of the front frame side box bodies (12) are connected with the upper portions of the front frame bases (11) through lifting mechanisms (10); a front frame front top beam (15) is arranged between the upper ends of the front parts of the front frame side box bodies (12) on the two sides, and a front frame rear top beam (16) is arranged between the rear part of the front frame front top beam (15) and the upper ends of the rear parts of the front frame side box bodies (12) on the two sides; and an anchor jacking operation space (5) is arranged between the front frame front top beam (15) and the front frame rear top beam (16).

3. A tunneling temporary support device according to claim 2, characterized in that: the front frame front top beam (15) is composed of a front top beam main body (27), and the left end and the right end of the front top beam main body (27) are respectively connected with a front top beam connecting part (19) at the upper end of the corresponding front frame side box body (12) through a front top beam connecting lug plate (28).

4. A tunneling temporary support device according to claim 2, characterized in that: a supporting net shield mechanism (6) is movably arranged in the anchor jacking operation space (5) between the front frame front top beam (15) and the front frame rear top beam (16); the net supporting shield mechanism (6) is movably connected with the front frame front top beam (15) through a shield connecting part (29).

5. A tunneling temporary support device according to claim 2, characterized in that: the front frame rear top beam (16) is composed of a rear top beam main body (30), a plurality of groups of top plate contact convex beams (31) are arranged on the upper side of the rear top beam main body (30), and a top anchor avoiding interval (32) is arranged between two adjacent groups of top plate contact convex beams (31); the left end and the right end of the rear top beam main body (30) are respectively connected with a rear top beam connecting part (20) at the upper end of the corresponding front frame side box body (12) through a rear top beam connecting lug plate (33).

6. A tunneling temporary support device according to claim 1, characterized in that: the support rear frame (2) comprises rear frame bases (34) arranged on two sides of the lower portion of the support rear frame, rear frame side box bodies (35) are arranged above the rear frame bases (34) on the two sides of the support rear frame respectively, and the lower portions of the rear frame side box bodies (35) are connected with the upper portions of the rear frame bases (34) through lifting mechanisms (10); a rear frame top beam (37) is arranged between the upper ends of the rear frame side box bodies (35) at the two sides.

7. A tunneling temporary support device according to claim 6, characterized in that: the rear frame top beam (37) is composed of a plurality of groups of rear frame top beam cross beams (38) transversely arranged between the upper ends of the rear frame side box bodies (35) on two sides, and a plurality of groups of rear frame top beam consequent beams (39) longitudinally arranged along the extending direction of the roadway are arranged on each group of rear frame top beam cross beams (38).

8. A tunneling temporary support device according to claim 7, characterized in that: the rear frame top beam cross beam (38) is composed of a rear frame cross beam main body (43), and the left end and the right end of the rear frame cross beam main body (43) are respectively connected with a rear frame cross beam connecting part (41) at the upper end of the corresponding rear frame side box body (35) through a rear frame cross beam connecting lug plate (44).

9. A tunneling temporary support device according to claim 7, characterized in that: the rear frame top beam longitudinal beam (39) is composed of a rear frame longitudinal beam main body (46), the lower side of the rear frame longitudinal beam main body (46) is connected with an ear plate (47) through the rear frame longitudinal beam, and is connected with a rear frame longitudinal beam connecting part (45) arranged on the upper side of the corresponding rear frame top beam cross beam (38); and a top anchor avoiding interval (32) is arranged between two adjacent groups of rear frame top beam longitudinal beams (39).

10. A tunneling temporary support device according to claim 1, characterized in that: the lifting mechanism (10) comprises a lifting hydraulic cylinder and a guide mechanism (14) which are arranged between two end parts of the side supporting base (8) and the upper lifting top beam (9), and two ends of the lifting hydraulic cylinder are respectively connected with the side supporting base (8) and the upper lifting top beam (9) through a lifting cylinder hinge part; the guide mechanism (14) comprises guide inserting sleeves (22) arranged on the lower sides of two end parts of the upper lifting top beam (9), and guide inserting columns (26) are arranged on the upper sides of the lateral supporting bases (8) and in positions corresponding to the guide inserting sleeves (22).

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