CN103848375B - Cantilever luffing and rotating control system - Google Patents
Cantilever luffing and rotating control system Download PDFInfo
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- CN103848375B CN103848375B CN201210509277.8A CN201210509277A CN103848375B CN 103848375 B CN103848375 B CN 103848375B CN 201210509277 A CN201210509277 A CN 201210509277A CN 103848375 B CN103848375 B CN 103848375B
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- derricking cylinder
- arm support
- cylinder
- oil
- luffing
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Abstract
The invention relates to a cantilever luffing and rotating mechanism and a cantilever luffing and rotating control system. The cantilever luffing and rotating mechanism comprises a mounting seat, a rotating seat, a cantilever, a left luffing cylinder, a right luffing cylinder and two support seats, wherein the mounting seat is mounted on the front end face of a frame of a tunnel rock drill, the rotating seat and the mounting seat are connected via pin shafts, the two support seats on the left side and the right side of the rotating seat are connected with the mounting seat via pin shafts, the rotating seat is connected with the cantilever via pin shafts, respective two ends of each of the left luffing cylinder and the right luffing cylinder are connected with the support seat on the corresponding side and the cantilever via pin shafts, and by the aid of the left luffing cylinder and the right luffing cylinder, the rotating seat and the two support seats can rotate leftwards or rightwards, and the cantilever can luffing upwards or downwards. The cantilever luffing and rotating mechanism can work in an extremely narrow place in a tunnel space, and solves the problem that an operation platform of aloft work is difficult to luffing upwards and downwards and rotate leftwards and rightwards due to the fact that the aloft work of the tunnel is restricted by sectional height and width of a space of the tunnel.
Description
Technical field
A kind of the present invention relates to tunneler High Altitude Platform, more particularly to luffing range of cantilever support of tunneler High Altitude Platform
Slew gear and the luffing range of cantilever support rotary control system of the luffing range of cantilever support slew gear is set.
Background technology
In the tunneling process in tunnel, the aerial work platform on tunnel drill be mainly used in transport explosive,
The work high above the ground such as supporting are installed, aerial work platform will carry out upper and lower luffing and left and right time in operation process regularly
Turn.Due to being restricted by tunnel space depth of section and width, tunnel drill package size will adapt to be applied in tunnel
The needs of work, therefore also require that the installation dimension of the aerial work platform on tunnel drill is meeting space and construction
Reduce on the premise of requirement as far as possible, that is, require that the installation dimension of the luffing slew gear of arm support reduces as far as possible.And pass
The luffing range of cantilever support slew gear of system is used and drives pivoting support to be driven the side of arm support revolution by turntable with rotary reducer
Method, as shown in Figure 1：Arm support 1 ' is linked together with turntable 3 ' by amplitude oil cylinder 2 ', and rotary reducer 4 ' passes through connecting bolt
5 ' are linked together with turntable 3 ', and floating bearing 6 ' is linked together by connecting bolt 7 ' and turntable 3 ' and and rotary reducer
Gear on 4 ' is engaged, and then floating bearing 6 ' is arranged on the upper surface of tunnel drill frame 9 ' by connecting bolt 8 '.
The rod chamber oil-feed of amplitude oil cylinder 2 ' during work, the job platform installed in 1 ' front end of arm support are fallen, i.e., become downwards
Width, fills 2 ' rodless cavity oil-feed of amplitude oil cylinder after explosive, drives the job platform of 1 ' front end of arm support to rise, i.e. luffing upwards；By
The top of tunnel drill frame 9 ', when tunnel space depth of section is less, this kind are arranged in luffing range of cantilever support slew gear
Structure is very limited.Traditional luffing range of cantilever support slew gear is due to being that rotary reducer 4 ' drives pivoting support 6 ' by turning in addition
Platform 3 ' drives arm support 1 ' to turn round, and this kind of structure can be with 360 ° of continuous rotaries, and in fact the width in tunnel space section is also limited
Within the specific limits, if operating imprudence job platform to be easy to collide the side wall in tunnel in continuous rotary, so as to draw
Serious security incident is played, therefore the angle of revolution of arm support 1 ' is limited in certain scope.
In sum：When traditional luffing range of cantilever support slew gear carries out work high above the ground, the upper and lower luffing of job platform and it is left,
Right-hand rotation launches difficult, is not suitable with the extremely narrow and small place of tunnel space.
The content of the invention
The purpose of the present invention is to propose to a kind of luffing range of cantilever support slew gear and luffing range of cantilever support rotary control system, which can
The operation in the extremely narrow and small place of tunnel space, solves tunnel overhead working due to by tunnel space depth of section and width
Restriction, cause to carry out the upper and lower luffing of job platform and left and right revolution during work high above the ground and launch difficult problem.
For achieving the above object, the invention provides technical scheme below：A kind of luffing range of cantilever support slew gear, wherein, bag
Mounting seat 1, revolving bed 2, arm support 5, left derricking cylinder 7, right derricking cylinder 8 and bearing 10 is included, wherein：The mounting seat 1 is arranged on tunnel
The front end face of road rock drill frame；The revolving bed 2 is connected with 1 bearing pin of the mounting seat；On the left of the revolving bed 2 and right side
Bearing 10 described in two is connected with 1 bearing pin of the mounting seat respectively；2 bearing pin of the revolving bed connects the arm support 5；The left luffing
Cylinder 7 and 8 respective two ends of the right derricking cylinder are connected with the bearing 10 and 5 bearing pin of the arm support of corresponding side respectively；It is described
Left derricking cylinder 7 and the right derricking cylinder 8 enable bearing 10 described in the revolving bed 2 and two to the left or right-hand rotation, the arm
Frame 5 being capable of luffing up or down.
Further, when the arm support 5 is in an intermediate position, the left derricking cylinder 7 is symmetrical with right derricking cylinder 8；Institute
Left derricking cylinder 7 and right derricking cylinder 8 are stated while elongation can promote the luffing upwards of the arm support 5；The left derricking cylinder 7 and right luffing
Shortening can drive 5 downward luffing of the arm support to cylinder 8 simultaneously；The position that the left derricking cylinder 7 is connected with the arm support 5 at which
Produce lateral force to the left and the right derricking cylinder 8 its position being connected with the arm support 5 produce to the left it is lateral
Thrust, enables to the arm support 5 and drives the revolving bed 2 to turn round to the left, while 8 points of the left derricking cylinder 7 and right derricking cylinder
Not Dai Dong the bearing 10 of corresponding side turn round to the left；The right derricking cylinder 8 is produced in its position being connected with the arm support 5
Lateral force and the left derricking cylinder 7 to the right produces lateral thrust to the right in its position being connected with the arm support 5,
Enable to the arm support 5 and the revolving bed 2 is driven to right-hand rotation, while the left derricking cylinder 7 and right derricking cylinder 8 band respectively
The bearing 10 of dynamic corresponding side is to right-hand rotation.
Further, also including two first limited blocks 201, described in two, the first limited block 201 is separately positioned on the revolution
The left side and right side of seat 2, when first limited block 201 encounters the mounting seat 1, the arm support 5 is to the left or right-hand rotation stops
Only.
Further, the arm support 5 to the left or right-hand rotation angle maximum angle be 50 degree.
Further, also including the second limited block 501, second limited block 501 is arranged on the bottom of the arm support 5,
When second limited block 501 encounters the mounting seat 1,5 downward luffing of the arm support stops.
Further, maximum angle during the 5 downward luffing of arm support and between horizontal plane is 35 degree.
Further, the piston rod of the left derricking cylinder 7 is connected with 10 bearing pin of the bearing on the left of the revolving bed 2,
Cylinder body is connected with 5 bearing pin of the arm support；The piston rod of the right derricking cylinder 8 is sold with the bearing 10 on the right side of the revolving bed 2
Axle connects, and cylinder body is connected with 5 bearing pin of the arm support.
Further, also including connecting the first bearing pin 3 of the revolving bed 2 and the mounting seat 1, connect the bearing 10
With the second bearing pin 11 of the mounting seat 1, the 3rd bearing pin 91 of the piston rod and the bearing 10 that connect the left derricking cylinder 7,
Connect the piston rod of the right derricking cylinder 8 and the 4th bearing pin 92 of the bearing 10, be connected the revolving bed 2 and the arm support 5
The 7th bearing pin 4, tightening nut 12, expanded joint cover the 13, first fastening bolt 14, the first axle sleeve 15, pressing plate 16, second fasten
Bolt 17 and the second axle sleeve 18, wherein：First bearing pin 3, the second bearing pin 11, the 3rd bearing pin 91 and the 4th bearing pin 92 are respective
Two tapered ends are respectively mounted the expanded joint set 13, are provided with the taper hole being engaged with the tapered end in each expanded joint set 13, and
Slot is provided with the taper hole；First fastening bolt 14 covers 13 through the expanded joint of two tapered end and is screwed with described
Nut 12 is screwed；The bearing 10 is press fit together with first axle sleeve 15；Second axle sleeve 18 with the revolving bed 2
It is press fit together, the 7th bearing pin 4 connects the revolving bed 2 and the arm by the pressing plate 16 and the second fastening bolt 17
Frame 5.
Also a kind of luffing range of cantilever support rotary control system of the present invention, which includes described luffing range of cantilever support slew gear and liquid
Control mechanism, the hydraulic control mechanism are controlled by the described left derricking cylinder 7 and the right derricking cylinder 8 in the luffing range of cantilever support slew gear
Make the arm support 5 upwards luffing, downward luffing, to the left revolution or to right-hand rotation.
Further, the hydraulic control mechanism includes air relief valve block 21, bigeminy proportional reversing valve 23 and hydraulic pilot ratio handss
Handle 24, wherein：The air relief valve block 21 has the first oil-out, the second oil-out；The hydraulic pilot ratio handle 24 has
First drives outlet c, second to drive outlet d, the 3rd to drive outlet e, the 4th to drive outlet f；The bigeminy proportional reversing valve 23
Including the first proportional reversing valve Y1 and the second proportional reversing valve Y2, wherein：The first proportional reversing valve Y1 has the first oil-feed
Mouth P1, first guide's hydraulic control drive import b1, second guide's hydraulic control to drive import a1, the first actuator port A1 and the second working oil
Mouth B1；There is the second proportional reversing valve Y2 the second oil inlet P 2, the 3rd guide's hydraulic control to drive import b2, the 4th guide's hydraulic control
Drive import a2, the 3rd actuator port A2 and the 4th actuator port B2；First oil-out of the air relief valve block 21 and the liquid
The oil-in of pressure guide proportion handle 24 is communicated；Second oil-out of the air relief valve block 21 respectively with first oil-in
P1, the second oil inlet P 2 are communicated；Described first drives outlet c to drive import b2 to communicate with first guide's hydraulic control；Described second drives
Dynamic outlet d drives import b1 to communicate with first guide's hydraulic control；Described 3rd drives outlet e and the 4th guide's hydraulic control to drive import a2
Communicate；Described 4th drives outlet f to drive import a1 to communicate with second guide's hydraulic control；The first actuator port A1 and the second work
Make hydraulic fluid port B1 to communicate with the rod chamber and rodless cavity of the left derricking cylinder 7 respectively；The work of the 3rd actuator port A2 and the 4th
Hydraulic fluid port B2 is communicated with the rod chamber and rodless cavity of the right derricking cylinder 8 respectively.
Further, hydraulic oil enters the rodless cavity of the left derricking cylinder 7 and the right derricking cylinder 8 simultaneously when, the left side
Derricking cylinder 7 and right derricking cylinder 8 extend simultaneously；Hydraulic oil enters the rod chamber of the left derricking cylinder 7 and the right derricking cylinder 8 simultaneously
When, the left derricking cylinder 7 and right derricking cylinder 8 shorten simultaneously；Hydraulic oil enters the rod chamber of the left derricking cylinder 7 all the way, while
When hydraulic oil enters the rodless cavity of the right derricking cylinder 8 all the way, the position that the left derricking cylinder 7 is connected with the arm support 5 at which
Put produce lateral force to the left and the right derricking cylinder 8 and side to the left is produced in its position being connected with the arm support 5
To thrust；Hydraulic oil enters the rodless cavity of the left derricking cylinder 7 all the way, while hydraulic oil enters the right derricking cylinder 8 all the way
During rod chamber, position that the left derricking cylinder 7 is connected with the arm support 5 at which produces lateral thrust to the right and described
Right derricking cylinder 8 produces lateral force to the right in its position being connected with the arm support 5.
Further, also including two balanced valves 20, each described balanced valve 20 includes that one-way balance valve Y3, first are overflow
Stream valve Y4 and the second overflow valve Y5, wherein：In each described balanced valve 20, the oil-in connection of the one-way balance valve Y3
The oil-out of the second actuator port B1 or the 4th actuator port B2, the one-way balance valve Y3 connects the left derricking cylinder 7 or institute
State the rodless cavity of right amplitude oil cylinder 8；The oil-in of the first overflow valve Y4 is connected to the left derricking cylinder 7 or the right luffing
On pipeline between the oil-out of the rodless cavity of oil cylinder 8 and the one-way balance valve Y3, oil return opening connects the fuel tank；Described
The oil-in of two overflow valve Y5 connect the 3rd actuator port A2 of the first actuator port A1 or described, the left derricking cylinder 7 or
The hydraulic control mouth of the rod chamber of the right amplitude oil cylinder 8 and the one-way balance valve Y3, oil return opening connect the fuel tank.
Further, also including ball valve 22, the ball valve 22 is arranged on the 3rd oil-out of the air relief valve block 21 and institute
State between fuel tank.
Arbitrary technical scheme in based on above-mentioned technical proposal, the embodiment of the present invention can at least produce following technology effect
Really：
Mounting seat is arranged on the present invention front end face of tunnel drill frame, and by revolving bed and two bearing bearing pins
It is connected in mounting seat, then arm support is connected with revolving bed bearing pin, therefore not only avoid the restriction of tunnel space depth of section,
The angle of revolution of traditional luffing range of cantilever support slew gear is limited to into the certain angle in front of frame by 360 ° of continuous rotaries also simultaneously
Sector region in revolution, such that it is able to avoid the restriction of tunnel space cross-sectional width；Additionally, the present invention is also by traditional arm support
An amplitude oil cylinder used in luffing slew gear is changed to two amplitude oil cylinders, and by two amplitude oil cylinders respective two ends
Be connected with the bearing and boom pin on left side and right side respectively, revolving bed and two bearings is not only enabled by two amplitude oil cylinders
It is enough to the left or right-hand rotation, moreover it is possible to enable arm support luffing up or down, traditional be driven back to rotary reducer so as to abandon
Turn the method that supporting drives arm support revolution by turntable, greatly reduce mechanism's installing space, adapt to space completely extremely narrow and small
Space.
In addition, at least also there is advantages below in the preferred technical solution of the present invention：
1st, as the left and right sides of the revolving bed of the present invention is respectively provided with limited block, in arm support to the left or during right-hand rotation,
When the limited block of revolving bed left or right side touches mounting seat, arm support stops to the left or right-hand rotation, therefore can avoid
The restriction of tunnel space cross-sectional width.
2nd, as the bottom of the arm support of the present invention is respectively provided with limited block, in the downward amplitude changing process of arm support, work as arm support
When the limited block of bottom touches mounting seat, arm support stops downward luffing, therefore can avoid tunnel space depth of section
Restriction.
3rd, as the present invention is using expanded joint principle fastening positioning, two tapered ends to each corresponding bearing pin are processed in expanded joint set
The taper hole being engaged, is machined with slot at taper hole, taper hole can be swollen in the extruding force by two tapered end of corresponding bearing pin for the taper hole
Greatly, now the tightening nut in fastening bolt is screwed, therefore the powerful extruding force that tightening nut is produced can be utilized by bearing pin
It is tightly held in mounting seat or bearing by expanded joint set.
4th, as the present invention is integrated with overflow valve in balanced valve, can be by the oil of hypertonia when arm support clamping stagnation in revolution
In-cylinder pressure off-load, thereby may be ensured that arm support from damage.
Description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this
Bright schematic description and description does not constitute inappropriate limitation of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the structural representation of traditional luffing range of cantilever support slew gear in prior art；
Fig. 2 is the side schematic view of luffing range of cantilever support slew gear provided by the present invention；
Fig. 3 is the schematic top plan view of luffing range of cantilever support slew gear provided by the present invention；
Fig. 4 is A-A sectional views in Fig. 3；
Fig. 5 is B-B sectional views in Fig. 3；
Fig. 6 is C-C sectional views in Fig. 3；
Fig. 7 is D-D sectional views in Fig. 3；
Fig. 8 is the principle schematic of hydraulic control mechanism in luffing range of cantilever support rotary control system provided by the present invention；
Labelling in figure：
1 ', arm support；2 ', amplitude oil cylinder；3 ', turntable；4 ', rotary reducer；5 ', connecting bolt；6 ', floating bearing；7’、
Connecting bolt；8 ', connecting bolt；9 ' tunnel drill frames；
1st, mounting seat；2nd, revolving bed；3rd, the first bearing pin；4th, the 7th bearing pin；5th, arm support；61st, the 5th bearing pin；62nd, the 6th pin
Axle；7th, left derricking cylinder；8th, right derricking cylinder；91st, the 3rd bearing pin；92nd, the 4th bearing pin；10th, bearing；11st, the second bearing pin；12nd, screw
Nut；13rd, expanded joint set；14th, the first fastening bolt；15th, the first axle sleeve；16th, pressing plate；17th, the second fastening bolt；18th, the second axle
Set；19th, spacer；20th, balanced valve；21st, air relief valve block；22nd, ball valve；23rd, bigeminy proportional reversing valve；24th, hydraulic pilot ratio handss
Handle.
Specific embodiment
Below by drawings and Examples, technical scheme is described in further detail.
Fig. 2 is the side schematic view of luffing range of cantilever support slew gear provided by the present invention；Fig. 3 is arm provided by the present invention
The schematic top plan view of frame luffing slew gear.As shown in Figure 2 and Figure 3, luffing range of cantilever support slew gear provided by the present invention includes peace
Dress seat 1, revolving bed 2, arm support 5, left derricking cylinder 7, right derricking cylinder 8 and bearing 10, wherein：Mounting seat 1 is arranged on tunnel drill
The front end face of frame, can so avoid the restriction of tunnel space depth of section, while by traditional luffing range of cantilever support slew gear
Angle of revolution is limited in front of tunnel drill frame turn round in the sector region of certain angle by 360 ° of continuous rotaries, so as to
The restriction of tunnel space cross-sectional width can be avoided.
Revolving bed 2 is linked together with mounting seat 1 by the first bearing pin 3, and revolving bed 2 can be around the first bearing pin 3 to the left
Or right-hand rotation（Convenient here for narration, hereinafter the left and right direction of alleged "left", "right" and accompanying drawing itself is consistent.）.Return
On the left of swivel base 2 and right side is respectively provided with the first limited block 201（As shown in Figure 3）, the present invention can be according to the width of working space
Situation, is adjusted to the size of the first limited block 201.Revolving bed 2 around the first bearing pin 3 to the left or right-hand rotation process
In, when the first limited block 201 encounters mounting seat 1 to the left or right-hand rotation stop.
Two bearings 10 on the left of revolving bed 2 and right side are connected with mounting seat 1 by the second bearing pin 11 respectively.Each bearing
10 can be around the second bearing pin 11 of its corresponding side to the left or right-hand rotation.
Revolving bed 2 is connected with 5 bearing pin of arm support by the 7th bearing pin 4, and arm support 5 can become up or down around the 7th bearing pin 4
Width.
Left derricking cylinder 7 and 8 respective two ends of right derricking cylinder are connected with the bearing 10 and 5 bearing pin of arm support of corresponding side respectively, tool
Body is：
The piston rod of left derricking cylinder 7 is connected with the bearing 10 on the left of revolving bed 2 by the 3rd bearing pin 91,7 energy of left derricking cylinder
Enough rotated around the 3rd bearing pin 91 up or down.The cylinder body of left derricking cylinder 7 is connected with arm support 5 by the 5th bearing pin 61, left luffing
Cylinder 7 can be rotated up or down around the 5th bearing pin 61.
The piston rod of right derricking cylinder 8 is connected with the bearing 10 on the right side of revolving bed 2 by the 4th bearing pin 92,8 energy of right derricking cylinder
Enough rotated around the 4th bearing pin 9 up or down.The cylinder body of right derricking cylinder 8 is connected with 5 bearing pin of arm support by the 6th bearing pin 62, right change
Width cylinder 8 can be rotated up or down around the 6th bearing pin 62.
When arm support 5 is in an intermediate position, left derricking cylinder 7 is symmetrical with right derricking cylinder 8, that is to say, that 7 liang of left derricking cylinder
Length between 3rd bearing pin 91 and the 5th bearing pin 61 at end（HI in Fig. 3）, with the 4th bearing pin 92 at 8 two ends of right derricking cylinder with
Length between 6th bearing pin 62（KL in Fig. 3）It is equal.In figure：H is the hinge that left derricking cylinder 7 is connected with bearing 10, and I is left
The hinge that derricking cylinder 7 is connected with arm support 5, K is the hinge that right derricking cylinder 8 is connected with bearing 10, and L is connected with arm support 5 for right derricking cylinder 8
The hinge for connecing.Also, HI and with the angle α 2 between the angle α 1 and KL and 5 centrage of arm support between 5 centrage of arm support also phase
Deng.
Left derricking cylinder 7 and right derricking cylinder 8 extend simultaneously, and arm support 5 can be promoted to surround the 7th bearing pin 4 luffing upwards.Left change
Width cylinder 7 and right derricking cylinder 8 shorten simultaneously, and arm support 5 can be driven to surround 4 downward luffing of the 7th bearing pin.
Left derricking cylinder 7 produces lateral force to the left in its position being connected with arm support 5（The effect in LI directions in Fig. 3
Power）, and the position that is connected with arm support 5 at which of right derricking cylinder 8 produces lateral thrust to the left（The effect in LI directions in Fig. 3
Power）, enable to arm support 5 and drive revolving bed 2 to turn round to the left, while left derricking cylinder 7 and right derricking cylinder 8 drive corresponding side respectively
Bearing 10 is turned round to the left.In turning course to the left, the first limited block 201 on the left of the revolving bed 2 touch mounting seat 1 when
Wait, arm support 5 stops turning round to the left.
Right derricking cylinder 8 produces lateral force to the right in its position being connected with arm support 5（The effect in IL directions in Fig. 3
Power）, and the position that is connected with arm support 5 at which of left derricking cylinder 7 produces lateral thrust to the right（The effect in IL directions in Fig. 3
Power）, enable to arm support 5 and revolving bed 2 driven to right-hand rotation, while left derricking cylinder 7 and right derricking cylinder 8 drive corresponding side respectively
Bearing 10 is to right-hand rotation.In turning course to the right, the first limited block 201 on the right side of the revolving bed 2 touch mounting seat 1 when
Wait, arm support 5 stops to right-hand rotation.
Using the first limited block 201, arm support 5 can be made in the front end of tunnel drill frame, with arm support 5 and revolving bed 2
Junction point be the center of circle, turn round in the horizontal sector region with the axis of arm support 5 as radius that the arc angle of the sector region is most
Greatly 100 degree, i.e. the maximum angle of left and right side revolution is 50 degree.With the angle of revolution of traditional luffing range of cantilever support slew gear by
360 ° of continuous rotaries are compared, and can avoid the restriction of tunnel space cross-sectional width.
In above-described embodiment, the bottom of arm support 5 is respectively arranged with the second limited block 501, in left derricking cylinder 7 and right derricking cylinder
During 8 drive 5 downward luffing of arm support, when the second limited block 501 encounters mounting seat 1, arm support 5 stops lower luffing.And arm
It is spacing that frame 5 is that the terminal of the stroke by oil cylinder itself is carried out when luffing upwards, then.
Using the second limited block 501, arm support 5 can be made in the vertical sector of the front end certain angle of tunnel drill frame
Luffing in region, maximum angle when downward luffing between arm support 5 and horizontal plane are 35 degree.Turn round with traditional luffing range of cantilever support
Mechanism, can avoid the restriction of tunnel space depth of section.In addition luffing range of cantilever support slew gear provided by the present invention is arranged on
The front end face of tunnel drill frame, therefore the restriction of tunnel space depth of section is further avoid, can be to a great extent
It is upper to adapt to operation in the extremely narrow and small place of tunnel space.
As shown in Fig. 4, Fig. 6, in the various embodiments described above, luffing range of cantilever support slew gear provided by the present invention also includes expanded joint
The 13, first fastening bolt 14 of set and tightening nut 12, wherein：First bearing pin 3, the second bearing pin 11, the 3rd bearing pin 91 and the 4th pin
92 respective two tapered end of axle is respectively mounted expanded joint set 13.The present invention covers processing in 13 using expanded joint principle fastening positioning in expanded joint
Go out the taper hole being engaged with two tapered ends of above-mentioned each bearing pin, at taper hole, be machined with slot, the taper hole is by corresponding bearing pin two
During the extruding force of tapered end, taper hole can swell, and now screw the tightening nut 12 in the first fastening bolt 14, can so utilize
Bearing pin 3 is tightly held on mounting seat 1 or bearing 10 by the powerful extruding force that tightening nut 12 is produced by expanded joint set 13.
In the various embodiments described above, luffing range of cantilever support slew gear provided by the present invention also includes the first axle sleeve 15（Such as Fig. 4 institutes
Show）, the first axle sleeve 15 is press fit together with bearing 10, freely can be rotated by 11 bearing 10 of the second bearing pin.In the present embodiment,
First axle sleeve 15 uses oil-free lubrication axle sleeve, therefore can reduce the frequency of injection lubricating oil.
As shown in figure 5, in the various embodiments described above, luffing range of cantilever support slew gear provided by the present invention also include pressing plate 16,
Second fastening bolt 17 and the second axle sleeve 18, wherein：Second axle sleeve 18 with press-fit integral in revolving bed 2, then arm support 5 passes through
7th bearing pin 4 is linked together with revolving bed 2, is installed the 7th bearing pin 4 with the second fastening bolt 17 by pressing plate 16 during installation
On arm support 5.In the present embodiment, the second axle sleeve 18 uses oil-free lubrication axle sleeve, therefore can reduce injection lubricating oil
Frequency.
As shown in fig. 7, in the various embodiments described above, luffing range of cantilever support slew gear provided by the present invention also include pressing plate 16,
Second fastening bolt 17 and spacer 19, wherein：Spacer 19 is respectively mounted the 5th bearing pin 61 and the mounting seat of the 6th bearing pin 62 press-fits
Together, then left derricking cylinder 7 passes through the 5th bearing pin 61 respectively with right derricking cylinder 8 and the 6th bearing pin 62 links together, and installs
When pass through pressing plate 16 and the second fastening bolt 17 the 5th bearing pin 61 and the 6th bearing pin 62 be separately mounted to into left derricking cylinder 7 with right change
On width cylinder 8.
As the bearing 10 for connecting left derricking cylinder 7 and right derricking cylinder 8 can be rotating around left side and second bearing pin 11 on right side, i.e.,
F the and J points that illustrate in Fig. 3 are rotated, and wherein F and J is respectively the hinge that left side and right side bearing 10 are connected with mounting seat 1, are gram
Take and the axially mounted stress that left derricking cylinder 7 produced when being installed with right derricking cylinder 8 is brought due to the presence of angle α 1 and α 2, in left change
Axle sleeve is respectively mounted in width cylinder 7 and the earrings installing hole of the piston rod of right derricking cylinder 8, is installed in the earrings installing hole of cylinder base
Self-lubricating knuckle bearing, offsets the characteristics of so can bear radial and axial stress simultaneously using self-lubricating knuckle bearing
Axially mounted stress, eliminating oil cylinder is affected by axially mounted stress in rotation process.
As shown in figure 8, the luffing range of cantilever support slew gear provided based on the present invention, of the invention also to provide a kind of luffing range of cantilever support time
Turn control system, the system includes above-mentioned luffing range of cantilever support slew gear and hydraulic control mechanism, the hydraulic control mechanism is become by arm support
Left derricking cylinder 7 in width slew gear and right derricking cylinder 8 control arm support 5 upwards luffing, downward luffing, to the left turn round or return to the right
Turn.
The hydraulic control mechanism includes air relief valve block 21, bigeminy proportional reversing valve 23 and hydraulic pilot ratio handle 24, its
In：Air relief valve block 21 has the first oil-out, the second oil-out, oil-in and the first oil return opening.Hydraulic pilot ratio handle 24
Outlet c, second is driven to drive outlet d, the 3rd to drive outlet e, the 4th to drive outlet f, oil-in and the second oil return with first
Mouthful.Hydraulic pilot ratio handle 24 drives outlet c, second to drive outlet d, the 3rd to drive outlet e and the 4th to drive with first
Outlet f respectively with front, rear, left and right four direction operational motion, respectively control arm support 5 upwards luffing, downward luffing, to
Left revolution, to right-hand rotation.
Bigeminy proportional reversing valve 23 includes the first proportional reversing valve Y1 and the second proportional reversing valve Y2, wherein：First ratio
There is reversal valve Y1 the first oil inlet P 1, first guide's hydraulic control to drive import b1, second guide's hydraulic control to drive import a1, the first work
Make hydraulic fluid port A1, the second actuator port B1 and the 3rd oil return opening.Second proportional reversing valve Y2 has the second oil inlet P 2, the 3rd guide
Hydraulic control drives import b2, the 4th guide's hydraulic control to drive import a2, the 3rd actuator port A2, the 4th actuator port B2 and the 4th oil return
Mouthful.
The oil-in and hydraulic pump of air relief valve block 21（Not shown in figure）Oil-out communicate.
The oil-in of first oil-out and hydraulic pilot ratio handle 24 of air relief valve block 21 is communicated.The of air relief valve block 21
Two oil-outs are communicated with the first oil inlet P 1, the second oil inlet P 2 respectively.First drive outlet c and first guide's hydraulic control drive into
Mouth b2 is communicated.Second drives outlet d to drive import b1 to communicate with first guide's hydraulic control.3rd drives the first drains of outlet e and the 4th
Control drives import a2 to communicate.4th drives outlet f to drive import a1 to communicate with second guide's hydraulic control.First actuator port A1 and
Two actuator port B1 are communicated with the rod chamber and rodless cavity of left derricking cylinder 7 respectively.3rd actuator port A2 and the 4th actuator port
B2 is communicated with the rod chamber and rodless cavity of right derricking cylinder 8 respectively.
In above-described embodiment, luffing range of cantilever support rotary control system provided by the present invention also includes two balanced valves 20, often
One balanced valve 20 includes one-way balance valve Y3, the first overflow valve Y4 and the second overflow valve Y5, wherein：
In each balanced valve 20, the oil-in of one-way balance valve Y3 connects the second actuator port B1 or the 4th working oil
Mouth B2, the oil-out of one-way balance valve Y3 connect the rodless cavity of left derricking cylinder 7 or right amplitude oil cylinder 8.
The oil-in of the first overflow valve Y4 is connected to the rodless cavity and one-way balance valve of left derricking cylinder 7 or right amplitude oil cylinder 8
On pipeline between the oil-out of Y3, oil return opening connection fuel tank.
The oil-in of the second overflow valve Y5 connects the first actuator port A1 or the 3rd actuator port A2, left derricking cylinder 7 or the right side
The hydraulic control mouth of the rod chamber and one-way balance valve Y3 of amplitude oil cylinder 8, oil return opening connection fuel tank.
By taking left amplitude oil cylinder 7 as an example, in the case of normal left revolution, hydraulic oil passes through to show in Fig. 8 from the first actuator port A1
The g points for going out, into the rod chamber of left amplitude oil cylinder 7；Cause 5 clamping stagnation of arm support and cause hydraulic pressure when movement velocity is unequal in revolution
When oil pressure increases or causes pressure to increase when 5 clamping stagnation of arm support in revolution, hydraulic oil then enters one-way balance valve from g points
The hydraulic control mouth of Y3, promotes valve element to turn right motion, and with the increase of pressure, the valve port of one-way balance valve Y3 gradually increases, Zhi Daofa
Mouth is fully opened, and oil cylinder starts action.But cause 5 clamping stagnation of arm support and cause hydraulic oil pressure when movement velocity is unequal in revolution
Power is too high or causes hypertonia when 5 clamping stagnation of arm support in revolution, be higher by the second overflow valve Y5 preset pressure value when
Wait, hydraulic oil then enters the second overflow valve Y5 from g points, promote valve element to move downward, make the oil-in of the second overflow valve Y5 and return
Hydraulic fluid port is connected, so as to by the oily in-cylinder pressure off-load of hypertonia, against damages to ensure arm support 5.
In the various embodiments described above, luffing range of cantilever support rotary control system provided by the present invention also includes ball valve 22, ball valve 22
It is arranged between the 3rd oil-out of air relief valve block 21 and the fuel tank.
The operation principle of the hydraulic control mechanism hydraulic pressure in the present invention is as follows：
The oil-in of hydraulic oil connection air relief valve block 21, when not working, hydraulic oil passes through 22 off-load of ball valve.
During work, ball valve 22 is closed, hydraulic oil, by being divided into two-way after 21 pieces of air relief valve, is liquid after hydraulic oil decompression all the way
Pressure guide proportion handle 24 provides hydraulic oil, is then driven into guide's hydraulic control of bigeminy proportional reversing valve 23 by its driving outlet
Open one's mouth；Another road hydraulic oil enters respectively left derricking cylinder 7 and right derricking cylinder 8 after bigeminy proportional reversing valve 23 drives outlet and supplies
Oil.It is specially during work：
Hydraulic pilot ratio handle 24 is promoted forward, now hydraulic pilot ratio handle 24 first driving outlet c and
Second drives outlet d to drive import b2 and first guide's hydraulic control to drive with the 3rd guide's hydraulic control of bigeminy proportional reversing valve 23 respectively
Import b1 is connected, and corresponding proportional reversing valve commutation, hydraulic oil enter the rodless cavity of right derricking cylinder 8 and left derricking cylinder 7.Then,
Hydraulic oil enters the rodless cavity of left derricking cylinder 7 and right derricking cylinder 8 simultaneously when, left derricking cylinder 7 and right derricking cylinder 8 extend simultaneously, together
When the side force that produces on IL directions of two oil cylinders cancel each other, promote arm support 5 around the 7th bearing pin 4 luffing upwards.In left change
, upwards during luffing, arm support 5 carries out spacing, arm by the terminal of oil cylinder stroke for width cylinder 7 and the drive of right derricking cylinder 8 arm support 5
Frame 5 stops luffing upwards.
Hydraulic pilot ratio handle 24 is promoted backward, now hydraulic pilot ratio handle 24 the 3rd driving outlet e and
4th drives outlet f to drive import a2 and second guide's hydraulic control to drive with the 4th guide's hydraulic control of bigeminy proportional reversing valve 23 respectively
Import a1 is connected, and corresponding proportional reversing valve commutation, hydraulic oil enter the rod chamber of right derricking cylinder 8 and left derricking cylinder 7.Then,
Hydraulic oil enters the rod chamber of left derricking cylinder 7 and right derricking cylinder 8 simultaneously when, left derricking cylinder 7 and right derricking cylinder 8 shorten simultaneously, together
When the side force that produces on IL directions of two oil cylinders cancel each other, drive arm support 5 to surround 4 downward luffing of the 7th bearing pin.In left change
During width cylinder 7 and right derricking cylinder 8 drive 5 downward luffing of arm support, when the second limited block 501 of 5 bottom of arm support encounters installation
During seat 1, arm support 5 stops downward luffing.
Hydraulic pilot ratio handle 24 is promoted to the left, now hydraulic pilot ratio handle 24 first driving outlet c and
4th drives outlet f to drive import b2 and second guide's hydraulic control to drive with the 3rd guide's hydraulic control of bigeminy proportional reversing valve 23 respectively
Import a1 is connected, the commutation of corresponding proportional reversing valve, and hydraulic oil respectively enters the rodless cavity of right derricking cylinder 8 and left derricking cylinder 7
Rod chamber.Then, all the way hydraulic oil enter left derricking cylinder 7 rod chamber, while all the way hydraulic oil enter right derricking cylinder 8 without bar
During chamber, left derricking cylinder 7 produces lateral force to the left in its position being connected with arm support 5（The active force in LI directions in Fig. 3）
And right derricking cylinder 8 produces lateral thrust to the left in its position being connected with arm support 5（The active force in LI directions in Fig. 3）,
Arm support 5 drives revolving bed 2 to turn round to the left, while left derricking cylinder 7 and right derricking cylinder 8 drive the bearing 10 of corresponding side to return to the left respectively
Turn.In turning course to the left, when the first limited block 201 on the left of the revolving bed 2 touches mounting seat 1, arm support 5 stops
Turn round to the left.
Hydraulic pilot ratio handle 24 is promoted to the right, now hydraulic pilot ratio handle 24 second driving outlet d and
3rd drives outlet e to drive import a2 and first guide's hydraulic control to drive with the 4th guide's hydraulic control of bigeminy proportional reversing valve 23 respectively
Import b1 is connected, the commutation of corresponding proportional reversing valve, and pressure oil respectively enters the rod chamber of right derricking cylinder 8 and left derricking cylinder 7
Rodless cavity.Then, hydraulic oil enters the rodless cavity of left derricking cylinder 7 all the way, while hydraulic oil having into right derricking cylinder 8 all the way
During rod cavity, left derricking cylinder 7 produces lateral thrust to the right in its position being connected with arm support 5（The effect in IL directions in Fig. 3
Power）And right derricking cylinder 8 produces lateral force to the right in its position being connected with arm support 5（The effect in IL directions in Fig. 3
Power）.Arm support 5 drives revolving bed 2 to right-hand rotation, at the same left derricking cylinder 7 and right derricking cylinder 8 drive respectively the bearing 10 of corresponding side to
Right-hand rotation.In turning course to the right, when the first limited block 201 on the right side of the revolving bed 2 touches mounting seat 1, arm support 5
Stop to right-hand rotation.
Shortened due to left derricking cylinder 7, when right derricking cylinder 8 extends, the movement velocity of two oil cylinders can not possibly be consistent,
I.e. to the left, in motor process, Δ EHI and Δ EKL are changing, wherein:What Δ EHI and Δ EKL was illustrated in being respectively Fig. 3
Two trianglees that 3 points of E, H, I and 3 points of E, K, L are constituted；Arm support 5 is caused to block for movement velocity is unequal in elimination revolution
It is stagnant and cause hydraulic fluid pressure too high, two the first overflow valve Y4 and the second overflow valve is also integrated with the balanced valve 20 of oil cylinder
Y5, the pressure of the first overflow valve Y4 control cylinder rod chambers, the pressure of the second overflow valve Y5 control cylinder rodless cavities；When in revolution
Can be against damages to ensure arm support 5 by the oily in-cylinder pressure off-load of hypertonia during 5 clamping stagnation of arm support.
After 5 downward luffing of arm support is spacing, as oil cylinder also has remainder stroke, arm support 5 can also carry out left and right revolution；
Now hydraulic pilot ratio handle 24 is pulled to the left, the side force that oil cylinder is produced on IL directions causes arm support 5 to turn round to the left；
Oil cylinder also drives corresponding bearing 10 to turn round to the left simultaneously.In the same manner, hydraulic pilot ratio handle 24 is pulled to the right, oil cylinder is in IL
The side force produced on direction causes arm support 5 to right-hand rotation；Oil cylinder also drives corresponding bearing 10 to right-hand rotation simultaneously.
Finally it should be noted that:Above example is only to illustrate technical scheme rather than a limitation；To the greatest extent
Pipe has been described in detail to the present invention with reference to preferred embodiment, and those of ordinary skill in the art should be understood：Still
The specific embodiment of the present invention can be modified or equivalent is carried out to some technical characteristics；Without deviating from this
The spirit of bright technical scheme, which all should be covered in the middle of the technical scheme scope being claimed in the present invention.
Claims (11)
1. a kind of luffing range of cantilever support rotary control system, it is characterised in that
Including luffing range of cantilever support slew gear and hydraulic control mechanism,
The luffing range of cantilever support slew gear includes mounting seat (1), revolving bed (2), arm support (5), left derricking cylinder (7), right derricking cylinder
(8) and bearing (10), wherein：
Described mounting seat (1) is arranged on the front end face of tunnel drill frame；
Revolving bed (2) are connected with the mounting seat (1) bearing pin；
It is connected with the mounting seat (1) bearing pin with bearing described in the two of right side (10) respectively on the left of revolving bed (2)；
Revolving bed (2) bearing pin connects arm support (5)；
Left derricking cylinder (7) and the respective two ends of the right derricking cylinder (8) bearing (10) and institute respectively with corresponding side
State the connection of arm support (5) bearing pin；
Left derricking cylinder (7) and the right derricking cylinder (8) are so that revolving bed (2) and bearing described in two (10) can be to the left
Or right-hand rotation, the arm support (5) being capable of luffings up or down；
The hydraulic control mechanism includes air relief valve block (21), bigeminy proportional reversing valve (23) and hydraulic pilot ratio handle (24), its
In：
Described air relief valve block (21) have the first oil-out, the second oil-out；
Described hydraulic pilot ratio handle (24) drive outlet (c), second to drive outlet (d), the 3rd to drive outlet with first
E (), the 4th drive outlet (f)；
Described bigeminy proportional reversing valve (23) include the first proportional reversing valve (Y1) and the second proportional reversing valve (Y2), wherein：
First proportional reversing valve (Y1) there is the first oil-in (P1), first guide's hydraulic control to drive import (b1), the second elder generation
Drain control drives import (a1), the first actuator port (A1) and the second actuator port (B1)；
Second proportional reversing valve (Y2) there is the second oil-in (P2), the 3rd guide's hydraulic control to drive import (b2), the 4th elder generation
Drain control drives import (a2), the 3rd actuator port (A2) and the 4th actuator port (B2)；
The oil-in of first oil-out of air relief valve block (21) and the hydraulic pilot ratio handle (24) is communicated；
Second oil-out of air relief valve block (21) is communicated with the first oil-in (P1), the second oil-in (P2) respectively；
Described first drives outlet (c) to drive import (b2) to communicate with first guide's hydraulic control；
Described second drives outlet (d) to drive import (b1) to communicate with first guide's hydraulic control；
Described 3rd drives outlet (e) to drive import (a2) to communicate with the 4th guide's hydraulic control；
Described 4th drives outlet (f) to drive import (a1) to communicate with second guide's hydraulic control；
First actuator port (A1) and the second actuator port (B1) are respectively with the rod chamber of left derricking cylinder (7) and without bar
Chamber communicates；
3rd actuator port (A2) and the 4th actuator port (B2) are respectively with the rod chamber of right derricking cylinder (8) and without bar
Chamber communicates.
2. luffing range of cantilever support rotary control system as claimed in claim 1, it is characterised in that
Hydraulic oil enters the rodless cavity of left derricking cylinder (7) and the right derricking cylinder (8) simultaneously when, left derricking cylinder (7)
With right derricking cylinder (8) while elongation；
Hydraulic oil enters the rod chamber of left derricking cylinder (7) and the right derricking cylinder (8) simultaneously when, left derricking cylinder (7)
With right derricking cylinder (8) while shortening；
Hydraulic oil enters the rod chamber of left derricking cylinder (7) all the way, while hydraulic oil enters right derricking cylinder (8) all the way
During rodless cavity, left derricking cylinder (7) produce lateral force to the left and institute in its position being connected with the arm support (5)
State right derricking cylinder (8) lateral thrust to the left is produced in its position being connected with the arm support (5)；
Hydraulic oil enters the rodless cavity of left derricking cylinder (7) all the way, while hydraulic oil enters right derricking cylinder (8) all the way
During rod chamber, left derricking cylinder (7) produce lateral thrust to the right and institute in its position being connected with the arm support (5)
State right derricking cylinder (8) lateral force to the right is produced in its position being connected with the arm support (5).
3. luffing range of cantilever support rotary control system as claimed in claim 1, it is characterised in that
Also include two balanced valves (20), each described balanced valve (20) include one-way balance valve (Y3), the first overflow valve
(Y4) and the second overflow valve (Y5), wherein：
In each described balanced valve (20), the oil-in of one-way balance valve (Y3) connect the second actuator port (B1) or
4th actuator port (B2), the oil-out of one-way balance valve (Y3) connect left derricking cylinder (7) or the right luffing oil
The rodless cavity of cylinder (8)；
The oil-in of the first overflow valve (Y4) be connected to left derricking cylinder (7) or the right amplitude oil cylinder (8) without bar
On pipeline between chamber and the oil-out of the one-way balance valve (Y3), oil return opening connects the fuel tank；
The oil-in of the second overflow valve (Y5) connect the first actuator port (A1) or the 3rd actuator port (A2),
The hydraulic control mouth of the rod chamber and the one-way balance valve (Y3) of left derricking cylinder (7) or the right amplitude oil cylinder (8), oil return
The mouth connection fuel tank.
4. luffing range of cantilever support rotary control system as claimed in claim 1, it is characterised in that
Also include ball valve (22), ball valve (22) be arranged on air relief valve block (21) the 3rd oil-out and the fuel tank it
Between.
5. luffing range of cantilever support rotary control system as claimed in claim 1, it is characterised in that
When arm support (5) are in an intermediate position, left derricking cylinder (7) are symmetrical with right derricking cylinder (8)；
Left derricking cylinder (7) and right derricking cylinder (8) are while elongation can promote the arm support (5) luffing upwards；
Left derricking cylinder (7) and right derricking cylinder (8) can drive the arm support (5) luffing downwards while shortening；
Left derricking cylinder (7) produce lateral force to the left and the right side in its position being connected with the arm support (5)
Derricking cylinder (8) produces lateral thrust to the left in its position being connected with the arm support (5), enables to the arm support (5)
The revolving bed (2) is driven to turn round to the left, while the left derricking cylinder (7) and right derricking cylinder (8) drive the institute of corresponding side respectively
State bearing (10) to turn round to the left；
Right derricking cylinder (8) produce lateral force to the right and the left side in its position being connected with the arm support (5)
Derricking cylinder (7) produces lateral thrust to the right in its position being connected with the arm support (5), enables to the arm support (5)
The revolving bed (2) is driven to right-hand rotation, while the left derricking cylinder (7) and right derricking cylinder (8) drive the institute of corresponding side respectively
Bearing (10) is stated to right-hand rotation.
6. luffing range of cantilever support rotary control system as claimed in claim 1, it is characterised in that
Also include two first limited blocks (201), first limited block (201) is separately positioned on a left side for the revolving bed (2) described in two
Side and right side, when the first limited block (201) encounter the mounting seat (1), arm support (5) are to the left or right-hand rotation stops.
7. luffing range of cantilever support rotary control system as claimed in claim 6, it is characterised in that
Arm support (5) to the left or right-hand rotation angle maximum angle be 50 degree.
8. luffing range of cantilever support rotary control system as claimed in claim 1, it is characterised in that
Also include the second limited block (501), the second limited block (501) are arranged on the bottom of the arm support (5), when described the
When two limited blocks (501) encounter the mounting seat (1), 5 downward luffing of the arm support stops.
9. luffing range of cantilever support rotary control system as claimed in claim 8, it is characterised in that
Arm support (5) downwards luffing when and horizontal plane between maximum angle be 35 degree.
10. luffing range of cantilever support rotary control system as claimed in claim 1, it is characterised in that
The piston rod of left derricking cylinder (7) is connected with the bearing (10) bearing pin on the left of the revolving bed (2), cylinder body and institute
State the connection of arm support (5) bearing pin；
The piston rod of right derricking cylinder (8) is connected with the bearing (10) bearing pin on the right side of the revolving bed (2), cylinder body and institute
State the connection of arm support (5) bearing pin.
11. luffing range of cantilever support rotary control systems as claimed in claim 1, it is characterised in that
Also include connecting the first bearing pin (3), connection bearing (10) and the institute of revolving bed (2) and the mounting seat (1)
State the 3rd bearing pin of second bearing pin (11), the piston rod of connection left derricking cylinder (7) and the bearing (10) of mounting seat (1)
(91), connect fourth bearing pin (92) of the piston rod with the bearing (10) of right derricking cylinder (8), be connected the revolving bed
(2) and the 7th bearing pin (4) of the arm support (5), tightening nut (12), expanded joint set (13), the first fastening bolt (14),
One axle sleeve (15), pressing plate (16), the second fastening bolt (17) and the second axle sleeve (18), wherein：
First bearing pin (3), the second bearing pin (11), the 3rd bearing pin (91) and respective two tapered end of the 4th bearing pin (92) are pacified respectively
Fill expanded joint set (13), be provided with the taper hole being engaged with the tapered end, and the taper hole in each expanded joint set (13)
It is provided with slot；
Described first fastening bolt (14) pass through expanded joint set (13) of two tapered end and are revolved with the tightening nut (12)
Tightly；
Bearing (10) are press fit together with the first axle sleeve (15)；
Second axle sleeve (18) be press fit together in the revolving bed (2), the 7th bearing pin (4) pass through the pressing plate
(16) and the second fastening bolt (17) connects revolving bed (2) and the arm support (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210509277.8A CN103848375B (en) | 2012-12-04 | 2012-12-04 | Cantilever luffing and rotating control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210509277.8A CN103848375B (en) | 2012-12-04 | 2012-12-04 | Cantilever luffing and rotating control system |
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| CN103848375A CN103848375A (en) | 2014-06-11 |
| CN103848375B true CN103848375B (en) | 2017-03-22 |
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| US4260297A (en) * | 1978-09-26 | 1981-04-07 | Edbro Limited | Machines for positioning roof supports in a tunnel |
| CN101696632A (en) * | 2009-10-21 | 2010-04-21 | 三一集团有限公司 | Heading machine and auxiliary device thereof |
| CN202079139U (en) * | 2011-04-28 | 2011-12-21 | 西安石油大学 | Rotating taper sleeve type expander |
| CN202202808U (en) * | 2011-08-25 | 2012-04-25 | 中国地质大学（武汉） | Crawler three-arm multifunctional rock drilling trolley |
| CN202402045U (en) * | 2011-12-07 | 2012-08-29 | 中铁隧道装备制造有限公司 | Mounting equipment for steel tunnel arches |
| CN202968036U (en) * | 2012-12-04 | 2013-06-05 | 徐州徐工随车起重机有限公司 | Arm frame amplitude-changing rotation mechanism and arm frame amplitude-changing rotation control system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2340748Y (en) * | 1997-08-01 | 1999-09-29 | 铁道部第一工程局重型汽车修理厂 | Collective loading mechanism of rock carrier |
| JP2005194005A (en) * | 2003-12-26 | 2005-07-21 | Sasaki Corporation | Agricultural high lift work vehicle |
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2012
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4260297A (en) * | 1978-09-26 | 1981-04-07 | Edbro Limited | Machines for positioning roof supports in a tunnel |
| CN101696632A (en) * | 2009-10-21 | 2010-04-21 | 三一集团有限公司 | Heading machine and auxiliary device thereof |
| CN202079139U (en) * | 2011-04-28 | 2011-12-21 | 西安石油大学 | Rotating taper sleeve type expander |
| CN202202808U (en) * | 2011-08-25 | 2012-04-25 | 中国地质大学（武汉） | Crawler three-arm multifunctional rock drilling trolley |
| CN202402045U (en) * | 2011-12-07 | 2012-08-29 | 中铁隧道装备制造有限公司 | Mounting equipment for steel tunnel arches |
| CN202968036U (en) * | 2012-12-04 | 2013-06-05 | 徐州徐工随车起重机有限公司 | Arm frame amplitude-changing rotation mechanism and arm frame amplitude-changing rotation control system |
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| Publication number | Publication date |
|---|---|
| CN103848375A (en) | 2014-06-11 |
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