CN209925016U

CN209925016U - Portal anchor protects machine

Info

Publication number: CN209925016U
Application number: CN201920274133.6U
Authority: CN
Inventors: 蒲长晏; 魏立; 陈燕欢
Original assignee: LANGFANG JINGLONG HEAVY MACHINERY CO Ltd
Current assignee: Hebei Jinglong Intelligent Equipment Co ltd
Priority date: 2019-03-05
Filing date: 2019-03-05
Publication date: 2020-01-10
Anticipated expiration: 2029-03-05

Abstract

The utility model discloses a portal frame anchor protects machine, including preceding portal frame machine, back portal frame machine and pass the hydro-cylinder. The front portal crane comprises two front bases, a front top beam and a telescopic front beam, wherein an inner sliding column, an outer sliding sleeve and two stand columns which are matched with each other and slide are hinged between the two front bases and the front top beam, and the lifting and the longitudinal angle adjustment of the front top beam are realized through the telescopic action of the two stand columns; and the front top beam transverse angle is adjusted by the cable-stayed oil cylinder hinged between the front top beam and the outer sliding sleeves at two sides. The utility model discloses an adopt traveller, outer sliding sleeve mechanism in the articulated formula and have the portal mechanism of drawing the hydro-cylinder to one side, portal machine all has lift, vertical and horizontal angle modulation ability around making, improves its self-stability, promotes the ability of adaptation tunnel irregular shape. The telescopic front beam with large stroke, large support width and high support strength is adopted, normal cutting of the heading machine is not affected, and the roof of the newly exposed roadway can be better supported and protected safely.

Description

Portal anchor protects machine

Technical Field

The utility model relates to a coal mine tunnel tunnelling struts equipment technical field, especially relates to a portal anchor with supporting use of entry driving machine protects machine.

Background

At present, the most common equipment adopted in the coal mine roadway tunneling construction is a cantilever type tunneling machine. The supporting technology and equipment of anchor rod are mainly of two types. The first is timely support, namely the roadway stops tunneling after completing a tunneling cycle, and the newly exposed roadway rock mass is permanently supported by adopting an anchor rod and anchor net immediately. The process has the advantages of high operation site safety, good anchoring and protecting effect, capability of adapting to various tunnel geological conditions including a broken roof and the like, and low overall construction efficiency due to the fact that the tunneling and anchoring and protecting operations need to be carried out alternately. The second type is lagging support, namely, the heading machine continuously tunnels in the front of a roadway, temporary support equipment which synchronously moves forwards with the heading machine is arranged above the heading machine, and anchor rod permanent support equipment is arranged behind the temporary support equipment. The process has the advantages of parallel tunneling and supporting operation, high construction efficiency, convenient transportation of supporting materials, poor safety of operation sites, poor anchoring and protecting effects and capability of only adapting to complete geological conditions of roadway roofs. The utility model relates to a technology adopts the timely supporting technology.

The existing portal anchoring and protecting equipment adopting the timely supporting and protecting technology is provided with: 1. the invention application with publication number CN103573278A discloses a portal self-propelled anchor protection machine, and the main defects of the device are as follows: (1) the shovel plate at the front end of the crawler has limited capacity of pushing and shoveling float coal, and the float coal at the front end of the crawler must be basically cleaned when the crawler walks, but the construction site is difficult to meet the requirement; (2) each tunneling circulating anchor protection machine needs to retreat for a certain distance and then moves forward to the front end when in an anchor protection process, so that the operation efficiency is low; (3) the space for arranging the anchor rod machines is limited, the number of the anchor rod machines which can be carried is small, and the operation efficiency is low. 2. Notice for CN 203499708U's utility model patent, discloses a self-propelled coal mine tunnel temporary support anchor protects machine, and the device's main defect is: (1) because the length of the advanced shield beam matched with the advanced shield beam is limited, if the portal is close to the end of the roadway, cutting and loading operations of the heading machine are influenced, and if the portal is far away from the end of the roadway, the safety and process requirements of timely support cannot be met; (2) when a supporting beam formed by the portal mechanism is lifted, the transverse angle of the supporting beam is fixed, the roadway roof is changed, and when the transverse angle of the roadway roof is changed, the portal cannot be effectively supported; (3) the effective thrust that running gear can produce is less, and difficult antedisplacement is when more float coal of base front end. 3. The invention application with publication number CN103924996A discloses a hydraulic self-moving type end head protection bracket with a jumbolter, and the main defects of the equipment are as follows: (1) the anchor rod machine is fixed by an arm type swing rod support, so that the rigidity is poor and the positioning is difficult; (2) when the gantry mechanism does not contact the top and moves forwards, the gantry can be stabilized only by the aid of auxiliary support of the roadway side wall, the gantry cannot be self-stabilized, and the stability of equipment is poor; (3) the front part of the roadway cannot be provided with a side anchor rod, and the roadway cannot adapt to most geological conditions.

It is therefore apparent that the above-mentioned conventional gantry type anchorages still have inconveniences and disadvantages in structure, method and use, and further improvement is needed. How to create a new portal anchoring and protecting machine which can be matched with a heading machine for use, can support in time, can adapt to various tunnel geological conditions, has good supporting safety and low labor intensity, and becomes an object which is greatly required to be improved in the current industry.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a portal frame anchor protects machine makes it can use with the supporting of entry driving machine, can in time strut, can adapt to various tunnel geological conditions, and it is good to strut the security, low in labor strength to overcome the not enough of current portal frame anchor protects machine.

In order to solve the technical problem, the utility model provides a portal frame anchor protection machine, which comprises a front portal frame machine and a rear portal frame machine, wherein a group of pushing oil cylinders are respectively hinged on the left side and the right side between the front portal frame machine and the rear portal frame machine, the front portal frame machine comprises two front bases and a front top beam, a first inner slide column capable of swinging back and forth is hinged on each of the two front bases, the front top beam comprises a left longitudinal beam, a right longitudinal beam, a main cross beam and a rear cross beam which are arranged back and forth, a first outer slide sleeve capable of swinging left and right is hinged below each of the two longitudinal beams, the first outer slide sleeve is in sliding fit with the corresponding first inner slide column, telescopic first upright columns are arranged on the front sides and the rear sides of each group of the first outer slide sleeve and the first inner slide column, the lower ends of the first upright columns are hinged on the upper surface of the front bases, the upper ends of the first upright columns, the lifting and the longitudinal angle adjustment of the front top beam are realized through the extension and retraction of the two first upright columns; symmetrically arranged first cable-stayed oil cylinders are obliquely hinged between the main cross beam of the front top beam and the first outer sliding sleeves on the two sides, and the transverse angle of the front top beam is adjusted through the stretching of the symmetrically arranged first cable-stayed oil cylinders;

the rear portal machine comprises two rear bases and a rear top beam, wherein the two rear bases are hinged with second inner sliding columns capable of swinging back and forth, second outer sliding sleeves capable of swinging left and right are hinged below the two sides of the rear top beam, the second outer sliding sleeves are in sliding fit with the corresponding second inner sliding columns, telescopic second stand columns are arranged on the front sides and the rear sides of each group of second outer sliding sleeves and second inner sliding columns, the lower ends of the second stand columns are hinged to the upper surface of the rear bases, the upper ends of the second stand columns are hinged to the lower surface of the rear top beam, and the lifting and longitudinal angle adjustment of the rear top beam are realized through the stretching of the two second stand columns; and symmetrically arranged second cable-stayed oil cylinders are obliquely hinged between the rear top beam and the second outer sliding sleeves on the two sides, and the transverse angle of the rear top beam is adjusted by stretching and retracting the symmetrically arranged second cable-stayed oil cylinders.

As an improvement, be equipped with transverse guide on main beam and/or the rear beam, multiunit anchor rope bolter articulates on the sideslip slide and suit is in the transverse guide, sideslip slide and anchor rope bolter remove about along main beam and/or rear beam.

The front gantry machine further comprises a telescopic front beam, wherein the telescopic front beam comprises a front cross beam and two telescopic longitudinal beams, and the two telescopic longitudinal beams are respectively sleeved inside the two longitudinal beams of the front top beam in a telescopic manner through a group of telescopic oil cylinders;

the net supporting mechanism is arranged on the front side of the front cross beam, a transverse guide rail is further arranged on the front cross beam, a plurality of groups of roof bolting machines are hinged on the transverse sliding seat and sleeved in the transverse guide rail, and the transverse sliding seat and the roof bolting machines move left and right along the front cross beam.

In a further improvement, upper anchor guide pillars are rigidly fixed on the lower sides of the front ends of the two telescopic longitudinal beams, first vertical guide rails are arranged on the upper anchor guide pillars, two groups of upper anchoring machines are hinged to upper anchor sliding seats on two sides respectively and are correspondingly sleeved in the first vertical guide rails, and the upper anchor sliding seats and the upper anchoring machines move up and down along the upper anchor guide pillars.

In a further improvement, a foldable top anchor machine pedal is arranged at the lower end of the top plate anchor machine, and a foldable upper anchor machine pedal is arranged at the lower end of the upper anchor guide pillar.

The improved structure is characterized in that the top surface of the front cross beam is higher than that of the front top beam, a plurality of floating oil cylinders connected in series are arranged on the rear cross beam, and the tops of the floating oil cylinders are higher than that of the front top beam.

The improved structure is characterized in that a plurality of square holes are formed in the main cross beam of the front top beam, a plurality of square holes or square grooves are formed in the top of the rear top beam, and a plurality of groove-shaped notches are formed in the two sides of the rear top beam.

In a further improvement, lower anchor guide pillars are fixed above the rear sides of the two rear bases, second vertical guide rails are arranged on the lower anchor guide pillars, two groups of lower anchor machines are hinged to the lower anchor sliding seats respectively and sleeved in the second vertical guide rails correspondingly, and the lower anchor sliding seats and the lower anchor machines move up and down along the lower anchor guide pillars.

The coal shoveling device is further improved, two end parts of the lower surfaces of the front base and the rear base are both arranged into an arc-shaped structure which is tilted upwards, a coal shoveling mechanism is arranged at the front end part of the front base, and an anti-slip strip is arranged at the lower surface of the rear base; and a transition air duct is arranged at the lower part of the rear top beam.

The portal anchor protecting machine is further improved by comprising a hydraulic pump station and a hydraulic oil tank, wherein the hydraulic pump station and the hydraulic oil tank are used for providing hydraulic power for each anchor rod anchor cable machine and each oil cylinder, the hydraulic pump station is arranged below the rear side of the front top beam, and the hydraulic oil tank is used for the inner cavity of the main cross beam of the front top beam.

After adopting such design, the utility model discloses following advantage has at least:

1. the utility model discloses an adopt sliding column in the articulated formula, outer sliding sleeve mechanism and rather than complex stand structure to and have the portal mechanism of drawing the hydro-cylinder to one side, make preceding portal machine and back portal machine all have the ability of going up and down, vertical angle modulation and horizontal angle modulation, not only improved the self-stability ability of this portal anchor protection machine, still promoted the ability that adapts to the irregular shape in tunnel, make this portal anchor protection can be fine both applicable in the rectangular section also can be applicable to trapezoidal sectional tunnel.

2. Still through adopting the flexible front beam of large stroke, and this flexible front beam has great width of strutting and higher support intensity, front beam and the base front end of anchor machine have longer distance apart from the tunnel tip when entry driving machine cutting and loading operation, portal anchor machine need not retreat, only need the front beam withdrawal can, do not influence entry driving machine normal cutting and loading, when anchor machine struts the operation, flexible front beam stretches out fast and pushes up, the timely anchor of group's stock is protected, can play better temporary support effect to the tunnel roof that just exposes, better safety protection ability has, and is convenient and fast, safety and reliability.

3. The utility model discloses still through adopting preceding portal machine and back portal machine as the arrangement of stock machine to carry on the platform, make the space of arranging of stock machine big, arrange in large quantity, and the arrangement of stock machine is reasonable, move positioning structure simple, can satisfy the anchor in more complicated tunnel and protect the demand.

4. And the pushing oil cylinder is adopted to generate larger forward pushing force or pulling force on the front portal frame machine or the rear portal frame machine, so that the front portal frame machine and the rear portal frame machine can stably and alternately move, and the coal shoveling mechanism at the front end of the front base can have stronger float coal shoveling capacity. And the self-moving forward capability of the portal anchoring and protecting machine is further improved through the cambered surface design of the lower surfaces of the front base and the rear base and the design of the anti-slip strips.

5. The top surface of the front cross beam is higher than that of the front top beam, the floating oil cylinder is arranged on the rear cross beam, the top of the floating oil cylinder is higher than that of the front top beam, a safe distance is kept between the top surface of the front top beam and a roadway top plate through the floating oil cylinder and the support of the top of the front cross beam, and the safe distance can avoid the contact and extrusion of the tail end of the drilled anchor rod and the top surface of the front top beam. And the floating oil cylinders are connected in series, so that the front top beam can be uniformly contacted with an uneven roadway top plate, and the front top beam is prevented from being distorted.

6. And the top parts of the front top beam and the rear top beam are provided with square holes or square grooves, and the two side parts of the rear top beam are provided with groove-shaped notches, so that the tail ends of drilled anchor rods or anchor cables can fall into the groove-shaped notches and the square holes, and the tail ends of the drilled anchor rods or anchor cables can be prevented from contacting and extruding with the top surfaces of the front top beam and the rear top beam.

7. And the main cross beam of the front top beam is skillfully used as a hydraulic oil tank, so that the volume of the whole machine is saved, the weight of the whole machine is reduced, and the design is scientific, reasonable and attractive.

Drawings

The foregoing is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clear, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.

Fig. 1 is a side view of the gantry mounting and protecting machine of the present invention in a cutting operation (with the retractable front beam retracted);

fig. 2 is a perspective view of the gantry anchoring and protecting machine of the present invention in the anchoring and protecting process (the telescopic front beam is extended out);

FIG. 3 is a perspective view of the front gantry of the present invention with the upright post and the front beam both extended;

fig. 4 is a front view of the portal mechanism of the front portal frame of the present invention;

FIG. 5 is a perspective view of the front top beam of the front gantry crane of the present invention;

fig. 6 is a perspective view of the front gantry telescopic front beam of the present invention;

fig. 7 is a perspective view of the rear gantry machine of the present invention;

fig. 8 is a perspective view of the rear top beam of the rear portal machine of the present invention.

In the figure: 1. front portal frame machine, 2 rear portal frame machine, 3 pushing cylinder, 4 front top beam, 4-1 longitudinal beam, 4-2 main cross beam, 4-3 rear cross beam, 4-4 floating cylinder, 4-5 square hole, 5 rear top beam, 5-1 square hole, 5-2 gap, 6 front base, 7 rear base, 7-1 lower upper anchor guide post, 7-2 anti-slip strip, 8 telescopic front beam, 8-1 front cross beam, 8-2 telescopic longitudinal beam, 8-3 upper anchor guide post, 8-4 mesh supporting mechanism, 9 outer sliding sleeve, 10 inner sliding column, 11 upper anchor sliding base, 12 lower upper anchor sliding base, 13 lower upper anchor sliding base, 14 top anchor machine sliding base, 15 upper anchor machine pedal, 16 transverse guide rail, 17 vertical guide rail, 18 coal shoveling mechanism, 19. the anchor rod machine comprises a vertical column, 20 rotary oil cylinders, 21 telescopic oil cylinders, 22 cable-stayed oil cylinders, 23 lifting oil cylinders, 24 hydraulic pump stations, 25 rotary shafts, 26 roof bolt machines, 27 upper bolt machines, 28 lower bolt machines, 29 anchor cable bolt machines and 30 transition air cylinders.

Detailed Description

The utility model discloses portal anchor protects machine is a portal class technical equipment who adopts in time to strut technology, can use with the supporting cooperation of cantilever type entry driving machine, and its specific embodiment is as follows.

Referring to fig. 1 and 2, the portal anchoring and protecting machine of the embodiment is a portal anchoring and protecting machine which is bilaterally symmetrical along the center of a roadway, and comprises a front portal machine 1 and a rear portal machine 2, wherein a group of pushing cylinders 3 are respectively hinged on the left side and the right side between the front portal machine 1 and the rear portal machine 2. When in use, the front portal frame machine 1 is arranged at the front end of a driving roadway, and the rear portal frame machine 2 is arranged at the rear part of the front portal frame machine 1; when the front portal frame machine 1 is in a lifting state and is in contact with and tightly pushed against a roadway top plate, the rear portal frame machine 2 which is in a retracting state and is separated from the roadway top plate can move back and forth by pushing and pulling the pushing oil cylinder 3; when the rear portal machine 2 is in a lifting state, is in contact with and tightly props against a top plate of a roadway, the front portal machine 1 which is in a retracting state and is separated from the top plate of the roadway can move back and forth by pushing and pulling the pushing oil cylinder 3, so that the front portal machine 1 and the rear portal machine 2 can mutually support to move back and forth in the roadway in an alternating stepping mode; the matched tunnel boring machine passes through the front portal frame machine 1 and the rear portal frame machine 2 and completes related boring operation.

Referring to fig. 3 to 5, the front gantry 1 includes two front bases 6 and a front header 4. The two front bases 6 are both in a strip box structure, and are hinged with inner sliding columns 10 capable of swinging back and forth. The front top beam 4 comprises a left longitudinal beam 4-1, a right longitudinal beam 4-1, a main cross beam 4-2 and a rear cross beam 4-3 which are arranged in front and rear. The lower parts of the two longitudinal beams 4-1 are respectively hinged with an outer sliding sleeve 9 capable of swinging left and right, the outer sliding sleeve 9 is in sliding fit with a corresponding inner sliding column 10, telescopic upright columns 19 are arranged on the front side and the rear side of each group of the outer sliding sleeve 9 and each group of the inner sliding column 10, the lower ends of the upright columns 19 are hinged on the upper surface of the front base 6, the upper ends of the upright columns 19 are hinged on the lower surface of the front top beam 4, and the outer sliding sleeve 9 can be driven by the front top beam 4 to move up and down along the inner sliding column 10 when the upright columns 19 are lifted. And when the lifting heights of the front and rear upright columns 19 are not consistent, a certain longitudinal angle can be formed between the front top beam 4 and the front base 6 so as to adapt to the change of the longitudinal angle between the top plate and the bottom plate, and the application range is improved. Symmetrically arranged cable-stayed oil cylinders 22 are obliquely hinged between the main cross beam 4-2 of the front top beam 4 and the outer sliding sleeves 9 on the two sides, and the transverse angle between the front top beam 4 and the left and right outer sliding sleeves 9 can be adjusted through the stretching and cable-stayed action of the symmetrically arranged cable-stayed oil cylinders 22, so that a portal mechanism with variable transverse angle and strong self-stability capability is formed.

In this embodiment, the main beam 4-2 is provided with a transverse guide rail 16 and a rack, a left anchor cable bolting machine 29 and a right anchor cable bolting machine 29 are respectively hinged on the transverse sliding base 13 through a rotating shaft 25 and are sleeved in the transverse guide rail 16, a driving gear is arranged on the transverse sliding base 13 and is meshed with the rack, and when the hydraulic motor drives the gear to rotate, the transverse sliding base 13 and the anchor cable bolting machines 29 can move left and right along the main beam 4-2. The swivel cylinder 20 is arranged between the cross slide 13 and the cable bolter 29 in a hinged manner, and the cable bolter 29 can be rotated about the swivel axis 25 by extending and retracting the swivel cylinder 20.

Of course, according to the number of the anchor cable bolting machines required in practice, two or more groups of anchor cable bolting machines with the same structure as that of the main cross beam can be arranged on the rear cross beam 4-3 so as to adapt to more working condition requirements.

Referring to fig. 1, 2, 3 and 6 again, the front gantry crane 1 of the present embodiment further includes a telescopic front beam 8, the telescopic front beam 8 includes a front cross beam 8-1 and two telescopic longitudinal beams 8-2, the two telescopic longitudinal beams 8-2 are respectively sleeved inside the two longitudinal beams 4-1 of the front top beam 4 by a group of telescopic cylinders 21, and when the telescopic cylinders 21 act, the telescopic front beam 8 can be driven to move back and forth along the longitudinal beams 4-1.

The front side of the front beam 8-1 is provided with a net supporting mechanism 8-4, in the embodiment, the net supporting mechanism 8-4 is made of elastic materials, and an elastic limiting block which has a positioning effect on a supporting steel belt is arranged.

The front cross beam 8-1 is also provided with a transverse guide rail 16 and a rack, a plurality of groups of roof bolting machines 26 are hinged on the transverse sliding base 13 through a rotating shaft 25 and are sleeved in the transverse guide rail 16, a driving gear is arranged on the transverse sliding base 13 and is meshed with the rack, and when the hydraulic motor drives the gear to rotate, the transverse sliding base 13 and the roof bolting machines 26 can move left and right along the front cross beam 8-1. A swivel cylinder 20 is arranged in an articulated manner between the cross slide 13 and the roof bolting machine 26, the telescopic swivel cylinder 20 enabling the roof bolting machine 26 to rotate about a swivel axis 25.

Two sets of roof bolters 26 are arranged on the front cross member 8-1 in this embodiment. Three to four groups of roof bolters can be arranged according to actual conditions. The lower end of the roof bolter 26 is arranged with a collapsible roof bolter deck 14.

The lower sides of the front ends of the two telescopic longitudinal beams 8-2 are rigidly fixed with upper anchor guide posts 8-3, vertical guide rails 17 are arranged on the upper anchor guide posts 8-3, two groups of upper anchor machines 27 are respectively hinged on the upper anchor slide seats 11 at two sides through rotating shafts 25 and are correspondingly sleeved in the vertical guide rails 17, and a lifting oil cylinder 23 is arranged in the upper anchor guide posts 8-3 and is hinged between the upper anchor slide seats 11 and the upper anchor guide posts 8-3, so that when the lifting oil cylinder 23 acts, the upper anchor slide seats 11 and the upper anchor machines 27 can be driven to move up and down along the upper anchor guide posts 8-3. The rotary cylinder 20 is arranged between the upper anchor slide 11 and the upper anchor machine 27 in a hinged manner, and the telescopic rotary cylinder 20 can rotate the upper anchor machine 27 around a rotary shaft 25.

The lower end of the upper anchor guide post 8-3 is also provided with a foldable upper anchor machine pedal 15.

In addition, in the embodiment, the top surface of the front cross beam 8-1 is higher than the top surface of the front top beam 4, and a plurality of floating cylinders 4-4 connected in series are arranged on the rear cross beam 4-3, and the tops of the floating cylinders 4-4 are higher than the top surface of the front top beam 4. Through the support of the floating oil cylinder 4-4 and the top of the front cross beam 8-1, a safe distance is always kept between the top surface of the front top beam 4 and the roadway top plate, and the safe distance can prevent the tail end of an anchor rod which is completely drilled from contacting and extruding with the top surface of the front top beam 4. And the plurality of floating oil cylinders 4-4 are also connected in series, so that the front top beam 4 can be uniformly contacted with an uneven roadway top plate, and the distortion of the front top beam 4 is avoided.

In a further improvement, a main cross beam 4-2 of the front top beam 4 is provided with a plurality of square holes 4-5, so that the tail ends of the anchor cables which are arranged on the roadway top plate fall into the square holes to avoid contacting and extruding the anchor cables.

Referring to fig. 7 and 8, the rear gantry 2 includes two rear bases 7 and a rear header 5. The two rear bases 7 are in a strip box structure, and inner sliding columns 10 capable of swinging back and forth are hinged to the two rear bases. But the both sides below of this rear portion back timber 5 all articulates there is horizontal hunting's outer sliding sleeve 9, this outer sliding sleeve 9 and corresponding interior sliding column 10 sliding fit, and the front and back both sides of every outer sliding sleeve 9 of group and interior sliding column 10 all are provided with telescopic stand 19, and the lower extreme of this stand 19 articulates the upper surface at this rear portion base 7, and the upper end of this stand 19 articulates the lower surface at this rear portion back timber 5. Similarly, in the front gantry crane 1, the rear gantry crane 2 realizes the lifting and the longitudinal angle adjustment of the rear top beam 5 through the extension and retraction of the two upright posts 19 thereon; symmetrically arranged cable-stayed oil cylinders 22 are obliquely hinged between the rear top beam 5 and the outer sliding sleeves 9 on the two sides, and the transverse angle of the rear top beam 5 is adjusted through the stretching of the symmetrically arranged cable-stayed oil cylinders 22, so that the gantry mechanism with variable angle and strong self-stability capability is formed.

The upper part of the rear sides of the two rear bases 7 are respectively fixed with a lower part anchor guide post 7-1, the lower part anchor guide posts 7-1 are respectively provided with a vertical guide rail 17, a left lower part anchor machine 28 and a right lower part anchor machine 28 are respectively hinged on the lower part anchor slide base 12 through a rotating shaft 25 and are correspondingly sleeved in the vertical guide rails 17, a lifting oil cylinder 23 is arranged in the lower part anchor guide post 7-1 and is hinged between the lower part anchor slide base 12 and the lower part anchor guide post 7-1, and the lower part anchor slide base 12 and the lower part anchor machines 28 can be driven to move up and down along the lower part anchor guide post 7-1 when the lifting oil cylinder 23 acts. The swivel cylinder 20 is pivotally disposed between the counter anchor slide 12 and the counter bolter 28, and the telescopic swivel cylinder 20 allows the counter bolter 28 to rotate about a swivel axis 25.

The top of the rear top beam 5 is also provided with a plurality of square holes or square grooves 5-1, and the two sides of the rear top beam 5 are provided with a plurality of groove-shaped notches 5-2, so that the tail ends of the drilled anchor rods or anchor cables fall into the groove-shaped notches and the square holes, and the tail ends of the drilled anchor rods or anchor cables are prevented from contacting and extruding with the top surface of the rear top beam.

In this embodiment, both ends of the lower surfaces of the front base 6 and the rear base 7 are configured to be arc structures tilted upward. The front end of the front base 6 is provided with a coal shoveling mechanism 18 for cleaning the float coal at the front end. In this embodiment, the coal shoveling mechanism 18 may be a plow mechanism, a hinge mechanism with a spring plate for returning, or a mechanism with a hydraulic auxiliary device.

The lower surface of the rear base 7 is provided with an anti-slip strip 7-2.

The lower part of the rear top beam 5 is provided with a transition wind barrel 30.

In addition, the portal anchor protection machine further comprises a hydraulic pump station 24 and a hydraulic oil tank, wherein the hydraulic pump station 24 provides hydraulic power for each anchor rod anchor cable machine and each oil cylinder, the hydraulic pump station 24 is arranged below the rear side of the front top beam 4, and the hydraulic oil tank adopts a main cross beam inner cavity of the front top beam 4.

The working process of the portal anchoring and protecting machine is as follows: the portal anchor protection machine is arranged at the front part of the tunneling roadway and is spaced from the front end of the roadway by a plurality of anchor rods. The heading machine walks to the front end of the roadway through the inner side of the portal anchor protection machine to finish cutting loading with one row distance and retreats to a plurality of row distances. And (3) lowering the front gantry crane 1, and extending the pushing cylinder 3 to enable the front gantry crane 1 to move forwards by a row distance. Steel strips and anchor nets are laid on the top of the net supporting mechanism 8-4 and the top of the front cross beam 8-1, the telescopic front beam 8 extends out of a plurality of row distances to the end of the roadway, the front gantry crane 1 is lifted to the top plate of the roadway, and the side nets are hung to complete the preparation of anchoring operation. The left and right roof bolting machines 26 are operated from the initial transit position to the specified roof bolt hole locations to sequentially complete the driving of the roof bolts. And operating the left upper anchor machine 27, the right upper anchor machine 27 and the lower anchor machine 28 from the initial passing position to the specified side anchor hole positions to finish the driving of the upper anchors in sequence. And operating the left and right anchor cable bolting machines 29 from the initial passing position to the specified roof anchor cable hole positions to finish the construction of the roof anchor cables in sequence. After all anchor rods and anchor cables are arranged, the anchor rods and the anchor cable bolting machines return to the initial passing position. The front gantry crane 1 is lowered, and the front gantry crane 1 is raised after the telescopic front beam 8 is retracted. And (3) lowering the rear gantry machine 2, retracting the pushing cylinder 3, advancing the rear gantry machine 2 by a row distance, and then lifting the rear gantry machine 2 to finish the forward movement of the rear gantry machine 2. When the rear portal frame machine 2 moves forward, the transition air duct 30 and the telescopic air duct connected with the rear portal frame machine are driven to move forward simultaneously. At the moment, all anchoring and protecting operations of the anchor rod and the anchor cable are completed. The tunneling is completed by the tunneling machine, the anchoring and the protecting are completed by the portal anchoring and protecting machine, and the tunneling and the anchoring and the protecting operation of the whole roadway are completed by alternately and circularly operating.

The above description is only for the preferred embodiment of the present invention, and not intended to limit the present invention in any way, and those skilled in the art can make various modifications, equivalent changes and modifications using the above-described technical content, all of which fall within the scope of the present invention.

Claims

1. A portal frame anchor protection machine comprises a front portal frame machine and a rear portal frame machine, wherein a set of pushing oil cylinders are respectively hinged on the left side and the right side between the front portal frame machine and the rear portal frame machine, the portal frame machine is characterized by comprising two front bases and a front top beam, a first inner sliding column capable of swinging back and forth is hinged on the two front bases, the front top beam comprises a left longitudinal beam, a right longitudinal beam, a main cross beam and a rear cross beam which are arranged back and forth, a first outer sliding sleeve capable of swinging left and right is hinged below the two longitudinal beams, the first outer sliding sleeve is in sliding fit with the corresponding first inner sliding column, telescopic first stand columns are arranged on the front sides and the rear sides of each set of first outer sliding sleeve and each set of first inner sliding columns, the lower ends of the first stand columns are hinged on the upper surface of the front bases, and the upper ends of the first stand columns are hinged on the lower surface of the, the lifting and the longitudinal angle adjustment of the front top beam are realized through the extension and retraction of the two first upright columns; symmetrically arranged first cable-stayed oil cylinders are obliquely hinged between the main cross beam of the front top beam and the first outer sliding sleeves on the two sides, and the transverse angle of the front top beam is adjusted through the stretching of the symmetrically arranged first cable-stayed oil cylinders;

2. The gantry anchoring and protecting machine as claimed in claim 1, wherein the main beam and/or the rear beam is provided with a transverse guide rail, a plurality of anchor cable anchoring machines are hinged on a traverse slide and sleeved in the transverse guide rail, and the traverse slide and the anchor cable anchoring machines move left and right along the main beam and/or the rear beam.

3. The gantry anchoring machine according to claim 1, further comprising a front telescoping beam, wherein the front telescoping beam comprises a front cross beam and two longitudinal telescoping beams, and the two longitudinal telescoping beams are respectively telescopically sleeved inside the two longitudinal beams of the front top beam by a set of telescopic cylinders;

4. The portal anchoring and protecting machine as claimed in claim 3, wherein upper anchor guide posts are rigidly fixed to the lower sides of the front ends of the two telescopic longitudinal beams, first vertical guide rails are provided on the upper anchor guide posts, two sets of upper anchoring machines are respectively hinged to the upper anchor sliding seats on the two sides and are correspondingly sleeved in the first vertical guide rails, and the upper anchor sliding seats and the upper anchoring machines move up and down along the upper anchor guide posts.

5. The gantry anchoring machine of claim 4, wherein a foldable roof bolting machine tread is arranged at a lower end of the roof bolting machine, and a foldable upper anchoring machine tread is arranged at a lower end of the upper anchor guide post.

6. The gantry anchoring machine of claim 3, wherein the top surface of the front beam is higher than the top surface of the front top beam, and the rear beam is provided with a plurality of floating cylinders connected in series, the top of the floating cylinders being higher than the top surface of the front top beam.

7. The gantry anchoring and protecting machine as claimed in claim 1, wherein the main beam of the front top beam is provided with a plurality of square holes, the top of the rear top beam is provided with a plurality of square holes or square grooves, and two sides of the rear top beam are provided with a plurality of groove-shaped notches.

8. The portal anchoring machine according to any one of claims 1 to 7, wherein a lower anchor guide post is fixed above the rear side of each of the two rear bases, a second vertical guide rail is provided on each of the lower anchor guide posts, two sets of lower anchoring machines are respectively hinged on the lower anchor slide bases on both sides and are correspondingly sleeved in the second vertical guide rail, and the lower anchor slide bases and the lower anchoring machines move up and down along the lower anchor guide posts.

9. The gantry anchoring and protecting machine as claimed in claim 8, wherein both ends of the lower surfaces of the front base and the rear base are provided with arc structures which are tilted upwards, the front end of the front base is provided with a coal shoveling mechanism, and the lower surface of the rear base is provided with an anti-skid strip; and a transition air duct is arranged at the lower part of the rear top beam.

10. The gantry anchoring and protecting machine according to claim 1, further comprising a hydraulic pump station and a hydraulic oil tank for providing hydraulic power to each anchor rod anchoring and protecting machine and the oil cylinder, wherein the hydraulic pump station is arranged below the rear side of the front top beam, and the hydraulic oil tank adopts a main cross beam inner cavity of the front top beam.