CN112983518A - Machine carries and removes flexible supporting device - Google Patents
Machine carries and removes flexible supporting device Download PDFInfo
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- CN112983518A CN112983518A CN202110427720.6A CN202110427720A CN112983518A CN 112983518 A CN112983518 A CN 112983518A CN 202110427720 A CN202110427720 A CN 202110427720A CN 112983518 A CN112983518 A CN 112983518A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/003—Supports for the drilling machine, e.g. derricks or masts adapted to be moved on their substructure, e.g. with skidding means; adapted to drill a plurality of wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/04—Supports for the drilling machine, e.g. derricks or masts specially adapted for directional drilling, e.g. slant hole rigs
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Abstract
本发明涉及一种机载移动伸缩支护装置，包括底座、行走小车、悬臂主梁、俯仰油缸和钻机机构；底座、行走小车和悬臂主梁由下向上依次叠置安装，底座和悬臂主梁均沿前后方向延伸；悬臂主梁的下部和底座的上部分别安装有前后延伸设置的上、下销排，行走小车上安装有驱动齿轮和马达，驱动齿轮同时与上、下销排啮合，在驱动齿轮与上、下销排的啮合作用下，行走小车能在底座上前后往复行走，带动悬臂主梁能相对底座前后滑移；钻机机构连接在悬臂主梁的前方，在俯仰油缸伸缩带动下，其上的顶底支护机构在直立和水平方向两种姿态间翻转切换。本发明对煤矿巷道的恶劣工作环境的适应性更强，且更能适应大型煤巷快速掘进、高效支护的需求。
The invention relates to an airborne mobile telescopic support device, comprising a base, a walking trolley, a cantilever main beam, a pitching oil cylinder and a drilling rig mechanism; Extends in the front and rear directions; the lower part of the cantilever main beam and the upper part of the base are respectively equipped with upper and lower pin rows extending front and rear, and a driving gear and a motor are installed on the traveling trolley, and the driving gear meshes with the upper and lower pin rows at the same time. Under the meshing action of the upper and lower pin rows, the walking trolley can reciprocate back and forth on the base, driving the cantilever main beam to slide back and forth relative to the base; the drilling rig mechanism is connected in front of the cantilever main beam, and is driven by the telescopic cylinder of the pitching cylinder. The top and bottom support mechanism on the top can be flipped and switched between the upright and horizontal postures. The invention has stronger adaptability to the harsh working environment of the coal mine roadway, and can better adapt to the requirements of rapid excavation and efficient support of large coal roadways.
Description
Technical Field
The invention relates to a novel airborne mobile telescopic support device which can be arranged on the upper parts of various tunneling machines, can send an anchoring drilling machine mechanism to a working surface, and can work in cooperation with tunneling actions to realize functions of a tunneling and anchoring integrated machine, and belongs to the technical field of coal mine roadway tunneling equipment.
Background
The traditional roadway support generally adopts a separation mode of tunneling and support equipment, so that the support operation staff is more, the labor intensity is high, and the working environment is severe. Although the structural form that the machine-mounted jumbolter is additionally arranged on two sides of a cutting arm or two sides of a machine body of a conventional heading machine is adopted at present, the manual operation intensity can be reduced to a certain extent, the form still takes heading as a main part and support as an auxiliary part and is mainly used for small and medium-sized roadways.
For large roadways, the conventional scheme is to install a movable telescopic supporting device on the middle rear part of the heading machine, carry a drilling machine mechanism by using a telescopic arm in the movable telescopic supporting device, convey the drilling machine mechanism to the head of a working face or retract the drilling machine mechanism to the upper part of the rear part of the heading machine by using the telescopic motion of the telescopic arm, and realize the advance and retreat of the drilling machine mechanism. The transmission system of the existing movable telescopic support device has poor adaptability to the severe working environment of a coal mine roadway, and the transmission system is easy to break down due to accumulation or blockage of pulverized coal. In addition, along with the requirement of realizing multi-point support by one-time conveying in a large roadway, the extension length of the telescopic arm is increased, and higher requirements are provided for the stability and reliability of the movement of the movable telescopic support device.
Disclosure of Invention
The invention aims to provide an onboard mobile telescopic support device which has stronger adaptability to the severe working environment of a coal mine tunnel and can meet the requirements of rapid tunneling and efficient support of a large coal tunnel.
The main technical scheme of the invention is as follows:
an airborne mobile telescopic supporting device comprises a base, a walking trolley, a cantilever girder, a pitching oil cylinder and a drilling machine mechanism, wherein the base, the walking trolley and the cantilever girder are sequentially installed in an overlapping mode from bottom to top, the base and the cantilever girder both extend along the front-back direction, an upper pin row and a lower pin row which extend back and forth are respectively installed at the lower portion of the cantilever girder and the upper portion of the base, a driving gear and a power source for driving the driving gear to rotate are installed on the walking trolley, the driving gear is simultaneously meshed with the upper pin row and the lower pin row, the walking trolley can walk back and forth on the base under the meshing action of the driving gear and the upper pin row and the lower pin row to drive the cantilever girder to slide back and forth relative to the base, one position of the drilling machine mechanism is hinged with the front end of the cantilever girder, the other position of the pitching oil cylinder is hinged with the cantilever, the hinge axes of all the hinge parts horizontally extend from left to right, and the top-bottom supporting mechanism on the drilling machine mechanism is converted between a vertical upright posture and a front-back horizontal posture under the telescopic driving of the pitching oil cylinder.
A lower guide structure is further arranged between the base and the walking trolley, and an upper guide structure is further arranged between the walking trolley and the cantilever main beam.
The left side and the right side of the upper portion at the front end and the rear end of the walking trolley are respectively provided with a group of upper limiting wheel groups, the left and the right sides of the two groups of upper limiting wheel groups are arranged symmetrically left and right oppositely, each group of upper limiting wheel groups comprises an upper row of roller groups and a lower row of roller groups, the left edge and the right edge of the lower portion of the cantilever girder are arranged to extend forwards and backwards and respectively form a left girder side wing and a right girder side wing which are convex outwards leftwards and rightwards, the left girder side wing and the right girder side wing are respectively positioned between the upper row of roller groups and the lower row of roller groups in the upper limiting wheel groups at the left side and the right side and are simultaneously contacted.
The left side and the right side of the lower part of the front end and the rear end of the walking trolley are respectively provided with a group of lower limiting wheel sets, the left and the right sides of the two groups of lower limiting wheel sets are arranged symmetrically left and right oppositely, each group of lower limiting wheel sets comprises an upper row of roller sets and a lower row of roller sets, the left edge and the right edge of the upper part of the base are arranged into a left base side wing and a right base wing which extend forwards and backwards and respectively protrude outwards leftwards and rightwards, the left base wing and the right base wing are respectively positioned between the upper row of roller sets and the lower row of roller sets in the lower limiting wheel sets on the left side and the right side and are simultaneously contacted with the corresponding upper row of roller sets and the.
The upper surfaces of the left main beam side wing and the right main beam side wing are preferably provided with upper guide rails extending forwards and backwards, the cross section of each upper guide rail is in a trapezoid shape with a narrow upper part and a wide lower part, a top surface consisting of a left inclined surface, a right inclined surface and a horizontal surface in the middle is formed, the roller wheel surfaces of the upper row of roller groups in the upper limiting wheel set are arranged into a left conical surface, a right conical surface and a middle cylindrical surface, an inwards concave trapezoid cross section outline is formed, the two conical surfaces of the rollers of the upper row of roller groups in the upper limiting wheel set are in contact with the left inclined surface and the right inclined surface of the upper guide rail, and the cylindrical surfaces of the rollers of the upper row of roller.
The lower surfaces of the left base flank and the right base flank are preferably provided with lower guide rails extending forwards and backwards, the cross section of each lower guide rail is in a trapezoid shape with a wide upper part and a narrow lower part, a bottom surface consisting of a left inclined surface, a right inclined surface and a horizontal surface in the middle is formed, the roller wheel surfaces of the lower row of roller sets in the lower limiting wheel set are arranged into a left conical surface, a right conical surface and a middle cylindrical surface, an inwards concave trapezoid cross section profile is formed, the two conical surfaces of the rollers of the lower row of roller sets in the lower limiting wheel set are in contact with the left inclined surface and the right inclined surface of the lower guide rail, and the cylindrical surfaces of the rollers of the lower row of roller sets in the lower limiting wheel.
The rollers of the lower row of roller groups in the upper limiting wheel group and the rollers of the upper row of roller groups in the lower limiting wheel group are both cylindrical.
The lower surfaces of the left main beam side wing and the right main beam side wing can be respectively provided with a main beam wear-resistant flat plate extending forwards and backwards, the lower row of roller groups in the upper limiting wheel set is in contact with the main beam wear-resistant flat plate, the upper surfaces of the left base side wing and the right base side wing can be respectively provided with a base wear-resistant flat plate extending forwards and backwards, and the upper row of roller groups in the lower limiting wheel set is in contact with the base wear-resistant flat plate.
The walking trolley comprises a left side plate and a right side plate, and the power source is installed on the left side plate or the right side plate and is positioned on the left or right outer side of the walking trolley. The driving gear is positioned between the left side plate and the right side plate. The upper limit wheel set and the lower limit wheel set are installed on the left side plate and the right side plate in pairs and are positioned on the outer sides of the left side plate and the right side plate.
The power source adopts a motor or a hydraulic motor with low rotating speed and large torque, and the power source directly drives the driving gear.
The invention has the beneficial effects that:
the invention can be independently carried on a roadway heading machine, is used for automatically and stably conveying the jumbolter to a head-on in the roadway supporting process, automatically realizes the conversion of the top-bottom supporting mechanism between a working state and a withdrawing state by controlling the extension and retraction of the pitching oil cylinder, not only can reduce the manual operation intensity, but also can realize the precision of the operation, and the top-bottom supporting mechanism does not occupy the cutting area of the roadway heading machine after being withdrawn, thereby not influencing the cutting operation.
The mutual relative linear reciprocating motion between the walking trolley and the base and between the cantilever main beam and the walking trolley is realized through the meshing of the driving gear and the pin row, the structure of the joint is simple, the bearing capacity is improved compared with that of gear transmission, chain transmission and the like, the requirement on the environment is lower, the working reliability is higher, and the heavy-load severe environment of the coal roadway can be better adapted.
By arranging the upper limit wheel set and the lower limit wheel set on the walking trolley, arranging the girder side wing on the cantilever girder and arranging the base side wing on the base, the movement guidance and the accurate limit between the base and the walking trolley and between the walking trolley and the cantilever girder are realized, and the linear directions of two sets of front and back horizontal linear reciprocating motions are ensured not to deviate. And the friction of the guide structure is small, so that the two groups of linear reciprocating motions cannot be hindered, and the smooth motion is ensured.
A plurality of rollers are preferably arranged in the upper and lower rows of roller groups, the rollers are arranged in pairs in the embodiment shown in the attached drawing, the number of the rollers in the roller groups is large, which is equivalent to increasing contact points, and the stress is dispersed at multiple points, so that the service life of the rollers is prolonged. On the basis, the size of a single roller can be reduced, so that the structure of the supporting device is more compact.
Drawings
FIG. 1 is a schematic perspective view of one embodiment of the present invention;
FIG. 2 is a front view of one embodiment of the present invention;
FIG. 3 is a schematic perspective view of the boom main beam and pitch cylinder of FIG. 2;
FIG. 4 is a schematic perspective view of the walking trolley shown in FIG. 2;
FIG. 5 is a schematic perspective view of the base of FIG. 2;
FIG. 6 is a schematic perspective view of the drill mechanism of FIG. 2;
FIG. 7 is a cross-sectional view A-A of FIG. 2;
fig. 8 is a schematic view of the onboard mobile telescopic support device installed at the rear upper part of a main machine of a certain heading machine and in a parking position;
fig. 9 is a schematic view of the state of the onboard mobile telescopic support device installed at the rear upper part of a main machine of a certain heading machine and at the longest cantilever working position.
Reference numerals:
A. an onboard mobile telescopic support device; B. a heading machine;
1. a cantilever girder; 1-1, arranging a pin row; 1-2, main beam side wing;
2. a walking trolley; 2-1, driving gear, 2-2, hydraulic motor, 2-3, upper limit wheel set, 2-4, lower limit wheel set;
3. a base; 3-1, arranging a lower pin row; 3-2. base side flaps;
4. a drilling mechanism; 4-1, a top and bottom supporting mechanism;
5. and a pitching oil cylinder.
Detailed Description
The invention discloses an onboard mobile telescopic supporting device A, which comprises a base 3, a walking trolley 2, a cantilever girder 1, a pitching oil cylinder 5 and a drilling machine mechanism 4, as shown in figures 1-9. The base is the installation basis of machine-mounted mobile telescopic supporting device, machine-mounted mobile telescopic supporting device accessible the base is independently installed in the upper portion top surface of tunnelling machine B, can use the cushion leveling, fastens with the bolt. The base, the walking trolley and the cantilever girder are sequentially stacked from bottom to top. The base and the cantilever girder are both in a slender shape, and the extending directions of the base and the cantilever girder are the same. When the onboard mobile telescopic support device is installed on the heading machine, the onboard mobile telescopic support device extends along the front-back direction of the heading machine. The lower part of the cantilever girder and the upper part of the base are respectively provided with an upper pin row 1-1 and a lower pin row 3-1 which are arranged in a front-back extending way, and the walking trolley is provided with a driving gear 2-1 and a power source for driving the driving gear to rotate. The drive gear is simultaneously engaged with the upper pin row and the lower pin row. Under the meshing action of the driving gear and the upper pin row and the lower pin row, when the driving gear rotates, the walking trolley can walk back and forth on the base in a reciprocating mode, the cantilever girder is driven to slide back and forth relative to the walking trolley, and therefore the cantilever girder can move and stretch relative to the base. In the view of fig. 2, when the drive gear rotates counterclockwise, the cantilever girder slides forward relative to the base at twice the speed of the traveling carriage relative to the base.
One part of the drilling machine mechanism can be hinged with the front end of the cantilever girder through a pin shaft, the other part of the drilling machine mechanism is hinged with one end of the pitching oil cylinder, and the other end of the pitching oil cylinder is hinged with the cantilever girder. In the embodiment shown in the attached drawings, the hinge joint of the cantilever main beam and the drilling machine mechanism is positioned in front of and above the hinge joint of the cantilever main beam and the pitching cylinder. The hinge axes of the hinges extend horizontally from left to right. The cantilever girder can drive the drilling machine mechanism to slide back and forth. The drilling machine mechanism is used for carrying the anchor rod drilling machine, when the anchor rod drilling machine is not supported, the anchor rod drilling machine is positioned at the rear upper part of the machine body of the roadway heading machine, a cutting space area is not occupied, when the support is needed, the cantilever main beam slides forwards to send the anchor rod drilling machine to a working area, and therefore the transportation task of the anchor rod drilling machine during anchor rod support working is achieved. The drilling machine mechanism can be provided with 2 or 4 jumbolters according to the requirements, and in the embodiment shown in the drawing, the drilling machine mechanism is provided with one jumbolter at the left and right. The pitching oil cylinder can stretch and retract to drive the drilling machine mechanism to turn. And under the telescopic driving of the pitching oil cylinder, a top-bottom supporting mechanism on the drilling machine mechanism is converted between a vertical upright posture and a front-back horizontal posture. In this embodiment, when the pitch cylinder is in the retracted limit state, the top-bottom support mechanism 4-1 of the drilling machine mechanism is in a vertical upright state (see fig. 9), that is, the drilling machine mechanism enters a working state of support or support preparation, and when the pitch cylinder is in the extended limit state, the drilling machine mechanism is in a retracted non-working state (see fig. 8). The pitch rams are preferably used to effect tilting of the rig mechanism between 0 ° and 90 °. Thus in the retracted state the top and bottom bracing mechanisms 4-1 of the drill mechanism are generally horizontal. Because the base is generally horizontally arranged, when the pitching cylinder is in the extending and contracting limit states, the top and bottom supporting mechanisms of the drilling machine mechanism are respectively parallel and vertical to the extending direction of the main beam of the cantilever.
The mutual relative linear reciprocating motion between the walking trolley and the base and between the cantilever main beam and the walking trolley is realized through the meshing of the driving gear and the pin row, the structure of the joint is simple, the bearing capacity is improved compared with that of gear transmission, chain transmission and the like, the requirement on the environment is lower, the working reliability is higher, and the heavy-load severe environment of the coal roadway can be better adapted.
The driving gear and the upper and lower pin row surface layers are subjected to hardness strengthening treatment and corrosion prevention treatment, and the service life of the airborne mobile telescopic supporting device is further prolonged.
And a lower guide structure and an upper guide structure are respectively arranged between the base and the walking trolley and between the walking trolley and the cantilever girder and are respectively used for ensuring that the relative reciprocating movement between the walking trolley and the base and between the cantilever girder and the walking trolley can be along the front-back straight line direction.
The left side and the right side of the upper part of the front end and the rear end of the walking trolley are respectively provided with a group of upper limiting wheel sets 2-3, and the two groups of upper limiting wheel sets which are opposite to each other in the left-right direction are symmetrically arranged in the left-right direction. Each upper limiting wheel group comprises an upper row of roller groups and a lower row of roller groups. The left edge and the right edge of the lower part of the cantilever main beam are arranged into a main beam left side wing and a main beam right side wing which extend forwards and backwards and protrude outwards to the left side and the right side respectively, and the main beam left side wing and the main beam right side wing can be collectively called as main beam side wings 1-2. The left side wing and the right side wing of the main beam are respectively positioned between the upper row of roller groups and the lower row of roller groups in the upper limiting wheel groups at the left side and the right side and are simultaneously contacted with the corresponding upper row of roller groups and the lower row of roller groups. The main beam left flank and the main beam right flank and the corresponding upper limiting wheel set form the upper guiding structure. In the process that the cantilever girder slides forwards and backwards relative to the walking trolley, the cantilever girder keeps a front-back horizontal linear moving track under the rolling guidance of the rollers of the upper and lower rows of roller groups.
The left side and the right side of the lower part of the front end and the rear end of the walking trolley are respectively provided with a group of lower limiting wheel sets 2-4, and the two groups of lower limiting wheel sets which are opposite to each other left and right are arranged in a left-right symmetrical mode. Each lower limiting wheel group comprises an upper row of roller groups and a lower row of roller groups. The left edge and the right edge of the lower part of the base are arranged into a left base side wing and a right base side wing which extend forwards and backwards and protrude outwards to the left side and the right side respectively, and the left base side wing and the right base side wing can be collectively called as base side wings 3-2. The left side wing and the right side wing of the base are respectively positioned between the upper row of roller groups and the lower row of roller groups in the lower limiting wheel groups on the left side and the right side and are simultaneously contacted with the corresponding upper row of roller groups and the lower row of roller groups. The left side wing and the right side wing of the base and the corresponding lower limiting wheel set form the lower guide structure. In the process that the walking trolley moves back and forth relative to the base, the walking trolley keeps a front and back horizontal linear moving track under the rolling guidance of the rollers of the upper and lower rows of roller groups in the lower limiting wheel group.
The upper limit wheel set and the lower limit wheel set are adopted to participate in realizing the guiding function, rolling friction is adopted between the walking trolley and the base and between the walking trolley and the cantilever main beam, the friction force is smaller during walking guiding, and the two groups of front and back horizontal reciprocating motion are smoother.
Two groups of upper limiting wheel sets and two groups of lower limiting wheel sets are respectively arranged at the front end and the rear end of the walking trolley, so that the upper guide structure and the lower guide structure can play a direct role in a distance range as long as possible. Similarly, a walking trolley with a longer length can be adopted as much as possible, so that the stress of each roller is reduced.
Furthermore, the upper surfaces of the left main beam side wing and the right main beam side wing are preferably respectively provided with upper guide rails extending forwards and backwards, the cross section of each upper guide rail is in a trapezoid shape with a narrow top and a wide bottom, and a top surface consisting of a left inclined surface, a right inclined surface and a middle horizontal plane is formed. The roller wheel surfaces of the upper row of roller groups in the upper limiting wheel group are arranged into a left conical surface, a right conical surface and a middle cylindrical surface to form an inwards concave trapezoidal section outline. Two sections of conical surfaces of the rollers of the upper row of roller groups in the upper limiting wheel group are in contact with the left inclined surface and the right inclined surface of the upper guide rail, and the cylindrical surfaces of the rollers of the upper row of roller groups in the upper limiting wheel group are vertically opposite to the horizontal surface of the upper guide rail but are not in contact with the horizontal surface of the upper guide rail. The contact rolling between the upper row of roller groups in the upper limiting wheel set and the upper guide rail is the core of the upper guide.
The lower surfaces of the left side wing and the right side wing of the base are respectively provided with lower guide rails extending forwards and backwards, the cross section of each lower guide rail is in a trapezoid shape with a wide upper part and a narrow lower part, and a bottom surface consisting of a left inclined plane, a right inclined plane and a middle horizontal plane is formed. The roller wheel surface of the lower row of roller groups in the lower limiting wheel group is arranged into a left conical surface, a right conical surface and a middle cylindrical surface to form an inwards concave trapezoidal section outline. Two sections of conical surfaces of the rollers of the lower row of roller groups in the lower limiting wheel group are in contact with the left inclined surface and the right inclined surface of the lower guide rail, and the cylindrical surfaces of the rollers of the lower row of roller groups in the lower limiting wheel group are vertically opposite to the horizontal surface of the lower guide rail but are not in contact with the horizontal surface of the lower guide rail. The contact rolling between the lower row of roller groups in the lower limiting wheel set and the lower guide rail is the core of lower guiding.
The left inclined plane and the right inclined plane are arranged on the upper guide rail and the lower guide rail, so that the relevant linear reciprocating motion is prevented from deviating to the left direction and the right direction, and the airborne mobile telescopic supporting device is more suitable for the heavy-load severe environment of the coal roadway.
The rollers of the upper and lower roller groups in the upper and lower limiting wheel groups preferably adopt two different specifications of rollers. The roller of the lower row of roller groups in the upper limiting wheel set and the roller of the upper row of roller groups in the lower limiting wheel set can adopt cylindrical rollers, so that higher bearing capacity can be obtained through a simpler structure. The roller with the concave trapezoidal section profile has the main function of guiding and bearing.
And bearings are arranged between the rollers and the corresponding roller shafts, and can be sliding bearings or rolling bearings. Under the condition that the diameters of the rollers are the same, the bearable force of the sliding bearing is larger, the structural size can be smaller, and the sealing structure is simpler. The sealed bearing is preferably adopted as the bearing, so that the working reliability is improved.
Correspondingly, the lower surfaces of the left main beam flank and the right main beam flank are preferably provided with main beam wear-resistant flat plates extending forwards and backwards, and the lower row of roller groups in the upper limiting wheel group is in contact with the main beam wear-resistant flat plates; the upper surfaces of the left base side wing and the right base side wing are preferably provided with base wear-resistant flat plates extending front and back, and the upper row of roller groups in the lower limiting wheel set are in contact with the base wear-resistant flat plates. Because the main beam wear-resistant flat plate and the base wear-resistant flat plate are subjected to wear-resistant treatment, the service life can be kept longer. Similarly, the left and right slopes of the upper and lower rails are also preferably subjected to wear-resistant treatment.
The main body of the cantilever girder and the main body of the base are preferably hollow box-type structures with rectangular cross sections so as to keep higher rigidity, and particularly for the cantilever girder, the deformation of a cantilever part when the cantilever girder stretches can be reduced as much as possible. The rigidity of the cantilever girder can be improved by arranging a plurality of reinforcing rib plates at the front and back of the inner cavity of the cantilever girder at intervals, so that the cantilever girder can adapt to larger overhang and can carry more drilling machines to meet the requirement of multi-point support in a large coal roadway. The cantilever girder in the embodiment can bear 4 tons of drilling machine mechanism load under the condition of overhanging for 5 meters.
For the cantilever main beam, a bottom plate of the box-type structure of the cantilever main beam stretches beyond the left side surface and the right side surface of the box body in the left-right direction, and the exceeding parts form a foundation structure of the main beam left side wing and the main beam right side wing. The upper guide rail is arranged on the upper surface of the exceeding part, the main beam wear-resistant plate is fixed on the lower surface of the exceeding part, and the upper guide rail, the main beam wear-resistant plate and the exceeding part form the main beam left flank and the main beam right flank together. For the base, the top plate of the box-type structure of the base is cantilevered to the left and right sides of the box body, and the protruding part forms a foundation structure of the left side wing and the right side wing of the base. The lower guide rail is arranged on the lower surface of the exceeding part, the base wear-resistant flat plate is fixed on the upper surface of the exceeding part, and the lower guide rail, the base wear-resistant flat plate and the exceeding part form the left base side wing and the right base side wing together.
The upper pin row is installed below a bottom plate of the cantilever girder through a support, and the lower pin row is installed above a top plate of the base through a support. The upper pin row is located in the middle of the bottom plate of the cantilever girder in the front-back left-right direction, and the lower pin row is located in the middle of the top plate of the base in the front-back left-right direction.
The walking trolley can comprise a left side plate and a right side plate, the power source is installed on the left side plate or the right side plate, and the driving gear is located between the left side plate and the right side plate. Specifically, the output end of the power source is coaxially and fixedly connected with one end of a transmission shaft, the other end of the transmission shaft is rotatably connected to the right side plate or the left side plate, and the driving gear is coaxially sleeved and fixed on the transmission shaft.
The upper limiting wheel set and the lower limiting wheel set are installed on the left side plate and the right side plate in pairs, and each roller is located on the outer side of the corresponding left side plate or right side plate, namely the left side of the left side plate or the right side of the right side plate.
No matter be the spacing wheelset in top or the spacing wheelset in below, all prefer a plurality of same specification gyro wheels that set up in pairs including the front and back in the upper row roller train and the lower row roller train wherein to increase the fulcrum, the multiple spot dispersion atress prolongs the life of gyro wheel, can also reduce the size of single gyro wheel, makes strutting arrangement's structure more compact.
The power source can adopt a low-speed and high-torque motor or a hydraulic motor 2-2. The power source directly drives the driving gear, namely a speed reducing mechanism is not arranged between the power source and the driving gear, so that the transmission system is simpler and more compact in structure, fewer in fault points and higher in working reliability.
The whole height of the airborne mobile telescopic supporting device is smaller than 1m, when the walking trolley moves to the front limit position, the length of a cantilever of the cantilever girder is 5m, the front section of the cantilever girder bears more than 4 tons of weight, and the deformation of the cantilever girder is very small.
The invention can push the drilling machine mechanism forwards to the cantilever for about 5 meters, and a plurality of groups of drilling machines, such as 2 groups or 4 groups, can be arranged on the drilling machine mechanism. After the device is stretched and fixed once, the device can be stopped, and a drilling machine at the front part can completely support one to two supporting row distances of a large coal roadway.
The invention can be used for carrying out one-time multipoint support in a large coal roadway with the width of more than 4.5 meters and the height of more than 2.7 meters.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110427720.6A CN112983518A (en) | 2021-04-21 | 2021-04-21 | Machine carries and removes flexible supporting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113833484A (en) * | 2021-09-17 | 2021-12-24 | 徐州徐工基础工程机械有限公司 | Working device capable of realizing forward and backward sliding of arch arm |
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Application publication date: 20210618 |