CN109630032A - It is a kind of without friction swing mechanism and coal mine drilling machine - Google Patents
It is a kind of without friction swing mechanism and coal mine drilling machine Download PDFInfo
- Publication number
- CN109630032A CN109630032A CN201910123643.8A CN201910123643A CN109630032A CN 109630032 A CN109630032 A CN 109630032A CN 201910123643 A CN201910123643 A CN 201910123643A CN 109630032 A CN109630032 A CN 109630032A
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- China
- Prior art keywords
- rotating disk
- lifter plate
- swiveling gear
- swing mechanism
- fixed frame
- Prior art date
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- 238000005553 drilling Methods 0.000 title claims abstract description 31
- 239000003245 coal Substances 0.000 title claims abstract description 15
- 239000007787 solid Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
It is the present invention relates to revolving support technical field, in particular to a kind of without friction swing mechanism, including fixed frame, swiveling gear Jing Quan, swiveling gear moving-coil, lifter plate and rotating disk；For swiveling gear Jing Quan to be fixed, swiveling gear moving-coil and swiveling gear Jing Quan are relatively rotated and are arranged lifter plate, and rotating disk is fixed；Lifter plate is at longitudinal first position, rotating disk and fixed frame point or line or face contact, so that passing through fixed frame hinders rotating disk rotation；At the raised second position vertical relative to first position, the contact between rotating disk and fixed frame releases lifter plate, and rotating disk rotates under the drive of swiveling gear moving-coil.According to the technical solution of the present invention, the contradiction being able to solve between the swing mechanism support strength and structure size of current low frequency rotation.A kind of coal mine drilling machine using above without friction swing mechanism is also claimed in the present invention simultaneously.
Description
Technical field
It is the present invention relates to revolving support technical field, in particular to a kind of without friction swing mechanism and coal mine drilling machine.
Background technique
In existing swing mechanism, fixed frame and rotary disk are connected by swiveling gear mostly, using motor
The moving-coil for driving swiveling gear, rotates the rotary disk being fixed on swiveling gear moving-coil.Such mechanism is usually used in needing
The operating condition frequently turned round, in order to guarantee that service performance often selects the swiveling gear of especially big bearing capacity, but its structure size is big,
The damage of swiveling gear and motor is usually caused due to load is excessive on rotary disk.
In coal mine drilling machine, it is also desirable to swing mechanism realizes that drilling executing agency reaches the function of all-direction borehole, but
The frequency that it is turned round is low, and at work, the drilling executing agency in rotating disk needs to consolidate coal mine drilling machine, if with small-sized time
Rotating disk is unable to satisfy shock loading strong when its carrying drilling, if selecting huge revolving gear, contour structures are big, meeting
It causes the structure size of coal mine drilling machine also to increase with it, is not able to satisfy the requirement of underground coal mine narrow, and existing time
Rotating disk needs to brake, and structure is complicated, operating difficulties.
In view of the above problems, the designer is based on being engaged in such product engineering application practical experience and profession abundant for many years
Knowledge, and cooperate the utilization of scientific principle, is actively subject to research and innovation, a kind of without friction swing mechanism and coal mine drilling machine to found,
Make it with more practicability.
Summary of the invention
In view of this, present invention seek to address that at present low frequency rotation swing mechanism support strength and structure size between lance
Shield, and provide a kind of without friction swing mechanism.A kind of coal mine drilling machine is further related in the present invention simultaneously, is had same effect.
The technical solution that the present invention solves technical problem is as follows:
It is a kind of without friction swing mechanism, including fixed frame, swiveling gear Jing Quan, swiveling gear moving-coil, lifter plate and rotating disk；
For the lifter plate for the swiveling gear Jing Quan to be fixed, the swiveling gear moving-coil and the swiveling gear are quiet
Circle relatively rotates setting, and the rotating disk is fixed；
The lifter plate is at longitudinal first position, rotating disk and the fixed frame point or line or face contact, to pass through institute
It states fixed frame and hinders the rotating disk rotation；The lifter plate is in raised second vertical relative to the first position
When setting, the contact between the rotating disk and the fixed frame is released, and the rotating disk turns under the drive of swiveling gear moving-coil
It is dynamic.
Further, no friction swing mechanism further includes the first position limiting structure, for limiting the lifter plate rotation.
Further, first position limiting structure is to be fixed on the fixed frame and at least one longitudinally disposed is led
To axis, the guiding axis runs through the lifter plate.
Further, it is provided with the second position limiting structure on the guiding axis, is being moved upwards for limiting the lifter plate
Extreme position in the process.
Further, second position limiting structure is the bulge-structure being fixed on the guiding axis outer wall.
Further, no friction swing mechanism further includes the second position limiting structure, is being transported upwards for limiting the lifter plate
Extreme position during dynamic.
Further, the lifter plate includes barrel and the plate structure perpendicular to the tubbiness body axis, the plate
Shape structure is used for the swiveling gear Jing Quan, and for providing the hydraulic motor of rotational power for the swiveling gear moving-coil
It being fixed, fitting sle is equipped with the guide sleeve that is fixedly connected with the fixed frame inside or outside the barrel, and described the
Two position limiting structures are the bulge-structure for being fixed on the barrel bottom, the position that the bulge-structure and the guide sleeve offset
Extreme position of as described lifter plate during moving upwards.
Further, bulge-structure is the limit stop ring being fixed on the barrel.
Further, the fixed frame is provided at least one support cylinder, and it is horizontal flat that the lifter plate is provided with one
Face, for bearing the support force from the support cylinder, so that the lifter plate is transported from first position to the second position
It is dynamic.
Further, rotation pan bottom is provided with ring-shaped cavity, and the rotating disk is located at the portion on the inside of the ring-shaped cavity
Divide and be fixedly connected with the swiveling gear moving-coil, the part in outside is bonded with the fixed frame.
Further, the center of the rotating disk is provided with axial through through-hole, the diameter through through-hole
Between the internal-and external diameter of the swiveling gear Jing Quan.
A kind of coal mine drilling machine is supported drilling executing agency without friction swing mechanism using above-mentioned.
According to the technical solution of the present invention, it at least can get following technical effect:
When entirely static without friction swing mechanism, rotating disk is contacted with fixed frame, drilling executing agency work, in drilling
Under strong shock loading, because of the supporting relation and frictional force present between rotating disk and fixed frame the two, so that rotating disk
Obtain stable support, and opposite rotation do not occur between the two, guarantee the work of entire drilling executing agency stability and can
By property, the supporting role because of fixed frame to rotating disk at this time is also reduced between swiveling gear Jing Quan and swiveling gear moving-coil
The dynamic loading born ensure that the service life of entire swiveling gear, effectively reduce swiveling gear through the above way
Size, and guarantee its structural strength；When without friction swing mechanism rotation, lifter plate moves up to the second position, thus
Swiveling gear Jing Quan, swiveling gear moving-coil and rotating disk are praised into height together, so that the contact solution between rotating disk and fixed frame
It removes, at this time when swiveling gear moving-coil rotates, rotating disk is driven to rotate together, so that drilling executing agency rotates to required
Position falls the work more than carrying out, again then to carry out comprehensive boring work.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 and Fig. 3 is structural schematic diagram (lifter plate and the second limit in embodiment one without friction swing mechanism when static
The structure type of structure is different)；
Fig. 2 is structural schematic diagram when rotating in embodiment one without friction swing mechanism；
Fig. 4 and Fig. 5 is lifter plate and the two different position views of guide sleeve in embodiment two；
Fig. 6 is the structural schematic diagram of rotating disk in embodiment three；
Appended drawing reference:
1- fixed frame, 2- swiveling gear Jing Quan, 3- swiveling gear moving-coil, 4- lifter plate, 41- barrel, 42- plate structure,
43- horizontal plane, 5- rotating disk, 51- ring-shaped cavity, 52- run through through-hole, the first position limiting structure of 6-, the second position limiting structure of 7-, 8-
Hydraulic motor, 9- guide sleeve, 10- support cylinder.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment one
It is a kind of without friction swing mechanism, including fixed frame 1, swiveling gear it is quiet circle 2, swiveling gear moving-coil 3, lifter plate 4 and rotation
Turntable 5；Lifter plate 4 is fixed for circle 2 quiet to swiveling gear, and swiveling gear moving-coil 3 and the quiet circle 2 of swiveling gear relatively rotate
Setting, and rotating disk 5 is fixed；Lifter plate 4 is at longitudinal first position, rotating disk 5 and 1 point of fixed frame or line or face
Contact, to hinder rotating disk 5 to rotate by fixed frame 1；Lifter plate 4 is relative to first position vertical raised second
When position, the contact between rotating disk 5 and fixed frame 1 is released, and rotating disk 5 rotates under the drive of swiveling gear moving-coil 3.
The quiet circle 2 of swiveling gear and swiveling gear moving-coil 3 without friction swing mechanism in the present embodiment can pass through the side of buying
Formula obtains integral structure, is relatively rotated between the two by roll structure, in assembly, passes through bolt arrangement first for rotary teeth
It takes turns quiet circle 2 to be fixed on lifter plate 4, and rotating disk 5 is fixed on swiveling gear moving-coil 3, to work as 3 turns of swiveling gear moving-coil
Rotating disk 5 can be driven to rotate when dynamic, and rotating disk 5 makes it obtain stable support, and can be real for fixed drilling executing agency
The rotation of existing low frequency.
When entirely static without friction swing mechanism, as shown in Figure 1, rotating disk 5 is contacted with fixed frame 1, the present embodiment
In be face contact, such way of contact is capable of increasing frictional force, to obtain better effect, can satisfy the line of requirement certainly
Contact and point contact are equally within protection scope of the present invention.Drill executing agency's work, and in drilling, strong impact is carried
Under lotus, because of the supporting relation and frictional force present between 1 the two of rotating disk 5 and fixed frame so that rotating disk 5 obtain it is stable
Support, and opposite rotation does not occur between the two, guarantee the stability and reliability of the work of entire drilling executing agency, at this time because
Supporting role of the fixed frame 1 to rotating disk 5 is also reduced and is born between the quiet circle 2 of swiveling gear and swiveling gear moving-coil 3
Dynamic loading, ensure that the service life of entire swiveling gear, effectively reduce the size of swiveling gear through the above way, and
Guarantee its structural strength；When without friction swing mechanism rotation, as shown in Fig. 2, lifter plate 4 moves up to the second position, from
And the quiet circle 2 of swiveling gear, swiveling gear moving-coil 3 and rotating disk 5 are praised into height together, so that rotating disk 5 and fixed frame 1
Between contact release, at this time when swiveling gear moving-coil 3 rotate when, drive rotating disk 5 rotate together so that drilling execution machine
Structure is rotated then falls the work more than carrying out to required position again, to carry out comprehensive boring work.
Because the contact between rotating disk 5 and fixed frame 1 releases, therefore at it during lifter plate 4 moves up and down
It easily relatively rotates during rising, this movement will affect the stability and positioning accuracy of drilling executing agency, therefore
As the preferred of the present embodiment, as shown in figs. 1 and 2, the first position limiting structure 6 is set, is rotated for limiting lifter plate 4.Specifically
, the first position limiting structure 6 is to be fixed on fixed frame 1 and at least one longitudinally disposed guiding axis, and guiding axis is through lifting
Plate 4.Perforative structure realize lifter plate 4 can freely move up and down, be preferably provided with two or more guiding axis, and extremely
Few deviation center of circle setting, to can get better limit effect.As a kind of preferred embodiment of guiding axis, it is arranged thereon
There is the second position limiting structure 7, for limiting extreme position of the lifter plate 4 during moving upwards, specifically, the second position limiting structure
7 be the bulge-structure being fixed on guiding axis outer wall, wherein bulge-structure can be any form in the prior art,
As long as the structure to limit can be carried out stopping during rising to lifter plate 4, in the present embodiment, such as Fig. 1 institute
Show, be preferably the convex edge being set at the top of guiding axis, the bottom of convex edge can limit the extreme position of lifter plate 4, wherein such as
Shown in Fig. 1, convex edge can be by realizing, convenient for the processing and maintenance of components with the end cap of guiding axis connection.
Embodiment two
Difference in the present embodiment with embodiment one is: the specific constructive form of the second position limiting structure.As shown in Fig. 2, without rubbing
Wiping swing mechanism further includes the second position limiting structure 7, for limiting extreme position of the lifter plate 4 during moving upwards.
In the present embodiment, lifter plate 4 includes barrel 41 and the plate structure 42 perpendicular to 41 axis of barrel, plate knot
Structure 42 encloses 2 for quiet to swiveling gear, and the hydraulic motor 8 for providing rotational power for swiveling gear moving-coil 3 is consolidated
Fixed, fitting sle is equipped with the guide sleeve 9 being fixedly connected with fixed frame 1 inside or outside barrel 41, and the second position limiting structure 7 is solid
Due to the bulge-structure of 41 bottom of barrel, the position that bulge-structure and guide sleeve 9 offset is that lifter plate 4 was moving upwards
Extreme position in journey.By the setting of barrel 41 on the one hand by being preferably oriented to being bonded for guide sleeve 9, also
On the other hand the stability that can be achieved at the same time in the up and down motion of lifter plate 4 and 5 rotation process of rotating disk can save guiding axis
Quantity, i.e., a guiding axis, which is only arranged, can preferably avoid the rotation of lifter plate 4.As shown in figure 4, guide sleeve 9 is set to bucket
Outside shape body 41, as shown in figure 5, guide sleeve 9 is set to inside barrel 41, the purpose of the present invention is can be achieved in the two, as
The present embodiment it is preferred, bulge-structure is the limit stop ring being fixed on barrel 41.Specific limit stop ring can pass through bolt
It is fixed in the outer circumferential walls of barrel 41 or bottom, to be carried out by one thereon in face of the extreme position of lifter plate 4
Limitation.
In implementing one and embodiment two, fixed frame 1 is provided at least one support cylinder 10, and lifter plate 4 is provided with
One horizontal plane 43, for bearing the support force from support cylinder 10, so that lifter plate 4 is from first position to second
Movement is set, when the quantity of support cylinder 10 is greater than 1, needs symmetrically to be arranged, thus guarantee the stability of work, support oil
Cylinder 10 can be obtained by way of buying, be conventional hydraulic oil cylinder in the prior art.
Embodiment three
In the present embodiment, the difference with embodiment one is: the specific constructive form of rotating disk 5.Specifically, 5 bottom of rotating disk
It is provided with ring-shaped cavity 51, the inside of ring-shaped cavity 51 is fixedly connected with swiveling gear moving-coil 3, the outside of ring-shaped cavity 51 and solid
Determine the fitting of rack 1.
During being attached drilling executing agency and rotating disk 5, need to execute drilling by bolt arrangement
Mechanism is fixed thereon, therefore in order to obtain biggish connection space, while avoiding bolt arrangement and fixed machine in connection procedure
Ring-shaped cavity 51 is arranged to solve the above problems in interference between frame 1, on the one hand obtains the space of installation, on the other hand mitigates
The weight of rotating disk 5, thus lifter plate 4 move up and down and rotating disk 5 rotation process in save the loss of power, simultaneously
It has been respectively formed reinforcing rib body structure inside and outside ring-shaped cavity 51, can effectively ensure that the structural reliability of entire rotating disk 5.
As the preferred of the present embodiment, it is provided with as shown in fig. 6, being located on the inside of ring-shaped cavity 51 in rotating disk 5 through logical
Hole 52, the diameter through through-hole 52 is between the internal-and external diameter of the quiet circle 2 of swiveling gear.Between through-hole 52 and ring-shaped cavity 51
Part connected for rotating disk 5 and swiveling gear moving-coil 3, the space obtained because running through through-hole 52 can facilitate swiveling gear quiet
Connection between circle 2 and lifter plate 4, and wherein because of the limitation of diameter, circle 2 quiet to swiveling gear and rotary teeth move in turn rotating disk 5
Gap between circle 3 is blocked, to reduce the probability of dust entrance, avoids the generation of Caton phenomenon.
A kind of coal mine drilling machine is supported drilling executing agency without friction swing mechanism using above-mentioned, specific works
Principle is as described in embodiment one, and details are not described herein again.
In conclusion the invention has the characteristics that:
Multiple support cylinders 10 are set on fixed frame 1, lifter plate 4 can be pushed to move up and down, make rotating disk 5 and fixed machine
The separation of frame 1 combines；Rotating disk 5 separates when rotating with fixed frame 1, and rotating disk 5 is combined with fixed frame 1 when not rotating, from
And guarantee the stability of entire swing mechanism, the performance of entire coal mine drilling machine is also improved, so that rotating disk 5 and fixed mechanism 1
Between have frictional force prevent rotating disk 5 arbitrarily rotate, to save stop mechanism, effectively reduce the ruler of entire coal mine drilling machine
It is very little, it is more suitable for using in narrow.
Basic principles and main features and advantage of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (10)
1. a kind of without friction swing mechanism, which is characterized in that including fixed frame (1), swiveling gear Jing Quan (2), swiveling gear
Moving-coil (3), lifter plate (4) and rotating disk (5)；
The lifter plate (4) for the swiveling gear Jing Quan (2) to be fixed, the swiveling gear moving-coil (3) with it is described
Swiveling gear Jing Quan (2) relatively rotates setting, and the rotating disk (5) is fixed；
The lifter plate (4) is at longitudinal first position, rotating disk (5) and the fixed frame (1) point or line or face contact, from
And the rotating disk (5) is hindered to rotate by the fixed frame (1)；The lifter plate (4) is relative to the first position
And when being increased to the second position vertically, the rotating disk (5) contact between the fixed frame (1) releases, the rotating disk
(5) it is rotated under the drive of swiveling gear moving-coil (3).
2. according to claim 1 without friction swing mechanism, which is characterized in that further include the first position limiting structure (6), be used for
Limit the lifter plate (4) rotation.
3. according to claim 2 without friction swing mechanism, which is characterized in that first position limiting structure (6) is to fix
In on the fixed frame (1) and at least one longitudinally disposed guiding axis, the guiding axis runs through the lifter plate (4).
4. according to claim 3 without friction swing mechanism, which is characterized in that be provided with the second limit on the guiding axis
Structure (7), for limiting extreme position of the lifter plate (4) during moving upwards.
5. according to claim 1 without friction swing mechanism, which is characterized in that further include the second position limiting structure (7), be used for
Limit extreme position of the lifter plate (4) during moving upwards.
6. according to claim 5 without friction swing mechanism, which is characterized in that the lifter plate (4) includes barrel
(41) and perpendicular to the barrel (41) axis plate structure (42), the plate structure (42) be used for the rotary teeth
It takes turns Jing Quan (2), and the hydraulic motor (8) for providing rotational power for the swiveling gear moving-coil (3) is fixed, it is described
Fitting sle is equipped with the guide sleeve (9) being fixedly connected with the fixed frame (1), second limit inside or outside barrel (41)
Bit architecture (7) is the bulge-structure for being fixed on the barrel (41) bottom, and the bulge-structure offsets with the guide sleeve (9)
Position be extreme position of the lifter plate (4) during moving upwards.
7. according to claim 1 without friction swing mechanism, which is characterized in that the fixed frame (1) is provided at least
One support cylinder (10), the lifter plate (4) are provided with a horizontal plane (43), come from the support cylinder for bearing
(10) support force, so that the lifter plate (4) is moved from first position to the second position.
8. according to claim 1 without friction swing mechanism, which is characterized in that rotating disk (5) bottom is provided with ring
Shape cavity (51), the rotating disk (5) is located at part on the inside of the ring-shaped cavity (51) and the swiveling gear moving-coil (3) is solid
Fixed connection, the part in outside is bonded with the fixed frame (1).
9. according to claim 8 without friction swing mechanism, which is characterized in that the centre bit of the rotating disk (5) installs
It is equipped with axial through through-hole (52), internal-and external diameter of the diameter through through-hole (52) between the swiveling gear Jing Quan (2)
Between.
10. a kind of coal mine drilling machine, which is characterized in that using as described in any one of claim 1 ~ 9 without the turn-around machine that rubs
Structure is supported drilling executing agency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910123643.8A CN109630032B (en) | 2019-02-19 | 2019-02-19 | It is a kind of without friction swing mechanism and coal mine drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910123643.8A CN109630032B (en) | 2019-02-19 | 2019-02-19 | It is a kind of without friction swing mechanism and coal mine drilling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109630032A true CN109630032A (en) | 2019-04-16 |
| CN109630032B CN109630032B (en) | 2019-08-09 |
Family
ID=66065615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910123643.8A Active CN109630032B (en) | 2019-02-19 | 2019-02-19 | It is a kind of without friction swing mechanism and coal mine drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109630032B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116717191A (en) * | 2023-08-10 | 2023-09-08 | 山东天河科技股份有限公司 | Colliery rig securing device |
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| CN205477394U (en) * | 2016-03-28 | 2016-08-17 | 重庆迈尔矿山设备开发有限公司 | Slewer and rig thereof |
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| CN207673275U (en) * | 2017-12-20 | 2018-07-31 | 山河智能装备股份有限公司 | A kind of low clearance dual AC power drilling machine |
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| US20170036716A1 (en) * | 2013-09-09 | 2017-02-09 | Columbia Trailer Co., Inc. | Lifting jack assembly with rotatable hydraulic cylinder for steering and method of operation |
| CN104033168A (en) * | 2014-06-18 | 2014-09-10 | 辽宁天安科技有限公司 | Self-moving flat-bed drilling anchor vehicle |
| CN104563863A (en) * | 2015-02-10 | 2015-04-29 | 中煤科工集团重庆研究院有限公司 | Automatic adjusting device for drilling posture of coal mine drilling machine |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109630032B (en) | 2019-08-09 |
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