CN108708754A - A kind of coal mine with safe warning function mine hole fixing device - Google Patents
A kind of coal mine with safe warning function mine hole fixing device Download PDFInfo
- Publication number
- CN108708754A CN108708754A CN201810491791.0A CN201810491791A CN108708754A CN 108708754 A CN108708754 A CN 108708754A CN 201810491791 A CN201810491791 A CN 201810491791A CN 108708754 A CN108708754 A CN 108708754A
- Authority
- CN
- China
- Prior art keywords
- fixed
- bearing plate
- fixedly connected
- wall
- mine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000003245 coal Substances 0.000 title claims abstract description 17
- 230000000694 effects Effects 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 235000005121 Sorbus torminalis Nutrition 0.000 claims description 3
- 244000152100 Sorbus torminalis Species 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000002689 soil Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F11/00—Rescue devices or other safety devices, e.g. safety chambers or escape ways
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Business, Economics & Management (AREA)
- Health & Medical Sciences (AREA)
- Emergency Management (AREA)
- Pulmonology (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention discloses a kind of coal mine with safe warning function mine hole fixing devices, including fixed frame, the madial wall of the fixed frame is hinged with the first bearing plate and the second bearing plate, it is connected by elastic string between first bearing plate and the second bearing plate, it rotates, the movement of first bearing plate can be rotated by toggle with swingle, the movement of swingle can make push rod contacts the second mobile bar and pushes the second mobile bar to be moved to outside fixed cylinder, so that the first contact is moved to the direction close to the second wafer, after the second wafer and the first contact pad, the extraneous power supply of connection, series circuit is connected, caution bell sends out warning, it reminds worker to withdraw mine hole or maintenance personal is reminded timely to repair, therefore the device can have the function that security warning.
Description
Technical field
The present invention relates to technical field of coal mine, a kind of specially coal mine with safe warning function fixes dress with mine hole
It sets.
Background technology
Mine hole fixing device is a kind of steel structure for mine hole fixed function.Steel structure is in prolonged mine hole
Under the extruding of soil property, meeting deformation of unevenness may pound worker, or even since steel is fixed because of the fracture of steel structure in this way
The fracture of structure leads to caving in for mine hole, threatens to the life of worker.But in the prior art, due to fixture structure
Simply, the not no device of reminder alarm, thus we a kind of mine hole fixing device of the coal mine with safe warning function is provided.
Invention content
The purpose of the present invention is to provide a kind of coal mine with safe warning function mine hole fixing devices, in solution
State the problem of being proposed in background technology.
To achieve the above object, the present invention provides the following technical solutions：
A kind of coal mine with safe warning function mine hole fixing device, including fixed frame, the inside of the fixed frame
Wall is hinged with the first bearing plate and the second bearing plate, is connected by elastic string between first bearing plate and the second bearing plate
It connects, and the lower end of the first bearing plate and the second bearing plate is fixedly connected with one end of the first spring, the other end of the first spring
It is fixedly connected on the madial wall of fixed frame, the inner roof wall of the fixed frame is rotatably connected to sleeve, and the lateral wall of sleeve is solid
Surely it is socketed with second gear, the second gear is engaged with first gear, and first gear is fixedly attached in rotation pipe, described
The upper end of rotation pipe is rotatably connected on the inner roof wall of fixed frame, and the madial wall of rotation pipe is threaded with and elastic string phase
The upper end of the cutter matched, the cutter is fixedly connected with telescopic rod, and the other end of telescopic rod is fixedly connected on fixed frame
Inner roof wall on, the madial wall of the sleeve is threaded with movable plate, and the lower end of movable plate is hinged with first movement bar, institute
The other end activity of first movement bar is stated through the first bearing plate and is hinged on the outer roof of fixed case, the fixed case is fixed
It is connected on the madial wall of fixed frame, and activity is plugged with toggle on fixed case, the upper end of the toggle is hinged on the first load-bearing
On the lower face of plate, and the lower end of toggle is hinged on the upper surface of swingle, fixed on the swingle to be plugged with rotating bar,
And the both ends of rotating bar are rotatably connected on the madial wall of fixed case, the other end of the swingle is hinged with push rod, and push rod
The other end extend in fixed cylinder, the fixed cylinder is fixedly connected on the inner roof wall of fixed case, and in fixed cylinder activity insert
It is connected to the second mobile bar, second spring is wound in second mobile bar, the both ends of second spring are respectively fixedly connected with
On the side wall of two mobile bars and on the lateral wall of fixed cylinder, one end that second mobile bar is located at outside fixed cylinder is fixedly connected with
First contact slidably connects the second wafer to match with the first contact, and second in the sliding slot opened up on the fixed case
It is connected by third spring between the upper end of contact and the roof of sliding slot, the lower end of the second wafer is fixedly connected with steel cable
One end, and the other end of steel cable around fixed pulley and is fixedly connected on the lower face of the second bearing plate through the side wall of fixed case
On, the fixed pulley is rotatably connected on the madial wall of fixed frame, and the inner bottom wall of the fixed case is fixedly connected with caution bell.
Preferably, the upper end of first bearing plate contradicts and is connected with supports block, and the groove bottom wall opened up in supports block is fixed
It is connected with one end of the 4th spring, the other end of the 4th spring is fixedly connected on the lower face of support rod, the upper end of the support rod
It is hinged on the inner roof wall of fixed frame.
Preferably, the lower end of the supports block is in convex structure, and is provided with anti-skid chequer.
Preferably, the madial wall of the sleeve is fixedly connected with multiple limited blocks, and the quantity of limited block is more than six, and is in
Equidistant annular spread.
Preferably, the rotation angle of the swingle is more than 30 degree.
Preferably, second mobile bar is located at the trapezoidal structure in one end in fixed cylinder.
Preferably, the push rod is more than the second wafer to vertical between the first contact to the distance between the second mobile bar
Distance.
Preferably, the lateral wall of the fixed case is circumferentially fixed is socketed with one layer of diaphragm seal.
Compared with prior art, the beneficial effects of the invention are as follows：When crimp of the upper end of fixed frame because of soil property,
Rotation pipe and sleeve can be made to move downward, the movement of sleeve can make movable plate relative sleeve move upwards, the fortune of movable plate
Dynamic sleeve to be rotated, the rotation of sleeve is rotated by first gear and second gear with rotation pipe, rotation pipe
Movement can make cutter move downward, so that cutter contact resilient rope and elastic string is cut, when elastic string reaches zero
When boundary's point, cutter continue to move, and the fracture of elastic string, the fracture of elastic string can be made on the one hand to make the second load-bearing
Plate rotates, so that steel cable loosens, so that the second wafer moves upwards under the effect of third spring so that second
Contact is moved to the direction close to the first contact, on the other hand, the first bearing plate can be made in supports block, the first spring and the 4th bullet
It under spring collective effect, rotates, the movement of the first bearing plate can be rotated by toggle with swingle, the fortune of swingle
It is dynamic to make push rod contacts the second mobile bar and pushes the second mobile bar to be moved to outside fixed cylinder so that the first contact to by
The direction movement of nearly the second wafer is connected to extraneous power supply after the second wafer and the first contact pad, and series circuit is connected, alert
Show that bell sends out warning, worker is reminded to withdraw mine hole or maintenance personal is reminded timely to repair, therefore the device can reach
To the effect of security warning.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is A structure enlargement diagrams of the present invention；
Fig. 3 is B structure enlarged diagram of the present invention.
In figure：Fixed frame 1, the first bearing plate 2, the second bearing plate 3, supports block 4, support rod 5, rotation pipe 6, telescopic rod 7, cutting
Knife 8, first gear 9, second gear 10, sleeve 11, limited block 12, movable plate 13, first movement bar 14, fixed case 15, toggle
16, swingle 17, push rod 18, fixed cylinder 19, the second mobile bar 20, the first contact 21, the second wafer 22, steel cable 23, fixed pulley
24, elastic string 25, caution bell 26.
Specific implementation mode
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 describes, 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.
- 3 are please referred to Fig.1, the present invention provides a kind of technical solution：
A kind of coal mine with safe warning function mine hole fixing device, including fixed frame 1, the madial wall of fixed frame 1
It is hinged with the first bearing plate 2 and the second bearing plate 3, is connected by elastic string 25 between the first bearing plate 2 and the second bearing plate 3
Connect, and the lower end of the first bearing plate 2 and the second bearing plate 3 is fixedly connected with one end of the first spring, the first spring it is another
End is fixedly connected on the madial wall of fixed frame 1, and the inner roof wall of fixed frame 1 is rotatably connected to sleeve 11, and the outside of sleeve 11
Wall fixing sleeve is connected to second gear 10, and second gear 10 is engaged with first gear 9, and first gear 9 is fixedly attached to rotation pipe 6
On, the upper end of rotation pipe 6 is rotatably connected on the inner roof wall of fixed frame 1, and the madial wall of rotation pipe 6 is threaded with and elasticity
The cutter 8 that rope 25 matches, the upper end of cutter 8 is fixedly connected with telescopic rod 7, and the other end of telescopic rod 7 is fixedly connected
On the inner roof wall of fixed frame 1, the madial wall of sleeve 11 is threaded with movable plate 13, and the lower end of movable plate 13 is hinged with
The other end activity of one mobile bar 14, first movement bar 14 through the first bearing plate 2 and is hinged on the outer roof of fixed case 15,
Fixed case 15 is fixedly connected on the madial wall of fixed frame 1, and activity is plugged with toggle 16, the upper end of toggle 16 on fixed case 15
It is hinged on the lower face of the first bearing plate 2, and the lower end of toggle 16 is hinged on the upper surface of swingle 17, on swingle 17
Fixation is plugged with rotating bar, and the both ends of rotating bar are rotatably connected on the madial wall of fixed case 15, the other end of swingle 17
It is hinged with push rod 18, and the other end of push rod 18 extends in fixed cylinder 19, fixed cylinder 19 is fixedly connected on the interior of fixed case 15
On roof, and activity is plugged with the second mobile bar 20 in fixed cylinder 19, and second spring, the second bullet are wound in the second mobile bar 20
The both ends of spring be respectively fixedly connected on the side wall of the second mobile bar 20 and the lateral wall of fixed cylinder 19 on, the second mobile bar 20
It is fixedly connected with the first contact 21 in one end outside fixed cylinder 19, is slidably connected in the sliding slot opened up on fixed case 15 and first
The second wafer 22 that contact 21 matches, and be connected by third spring between the upper end of the second wafer 22 and the roof of sliding slot
It connects, the lower end of the second wafer 22 is fixedly connected with one end of steel cable 23, and the other end of steel cable 23 runs through the side wall of fixed case 15
It around fixed pulley 24 and is fixedly connected on the lower face of the second bearing plate 3, fixed pulley 24 is rotatably connected on the inside of fixed frame 1
On wall, the inner bottom wall of fixed case 15 is fixedly connected with caution bell 26, and the upper end of the first bearing plate 2, which contradicts, is connected with supports block 4, and supports
The groove bottom wall opened up on block 4 is fixedly connected with one end of the 4th spring, and the other end of the 4th spring is fixedly connected on support rod 5
On lower face, the upper end of support rod 5 is hinged on the inner roof wall of fixed frame 1, and the lower end of supports block 4 is in convex structure, and is provided with
Anti-skid chequer, better conflict effect, the madial wall of sleeve 11 are fixedly connected with multiple limited blocks 12, and the quantity of limited block 12 is more than
Six, and it is isodistantly spaced annular spread, the rotation angle of swingle 17 is more than 30 degree, and the second mobile bar 20 is located at fixed cylinder 19
The trapezoidal structure in interior one end, the timely transmission of movement, the distance between 18 to the second mobile bar of push rod 20 are more than the second wafer
Vertical range between 22 to the first contact 21 ensures that series circuit can be connected, the circumferentially fixed set of lateral wall of fixed case 15
It is connected to one layer of diaphragm seal, prevents internal unit moisture damage, the first contact 21, the second wafer 22, caution bell 26 and extraneous power supply
Form a series loop.
Operation principle：When the upper end of fixed frame 1 because soil property crimp when, can make rotation pipe 6 and sleeve 11 to
The movement of lower movement, sleeve 11 can make 13 relative sleeve 11 of movable plate move upwards, and the movement of movable plate 13 can make sleeve
11 rotate, and the rotation of sleeve 11 is rotated by first gear 9 and second gear 10 with rotation pipe 6, the movement of rotation pipe 6
Cutter 8 can be made to move downward, so that 8 contact resilient rope 25 of cutter and elastic string 25 is cut, when elastic string 25 reaches
When to 1 boundary's point, cutter 8 continue to move, and the fracture of elastic string 25, the fracture of elastic string 25 can be made on the one hand to make
Second bearing plate 3 rotates, so that steel cable 23 loosens, so that the second wafer 22 is upward under the effect of third spring
Movement so that the second wafer 22 move to close to the direction of the first contact 21, another aspect, can make the first bearing plate 2 to
It under block 4, the first spring and the 4th spring collective effect, rotates, the movement of the first bearing plate 2 can be by toggle 16 with rotation
Bull stick 17 rotates, the movement of swingle 17 push rod 18 can be made to contact the second mobile bar 20 and push the second mobile bar 20 to
It moves outside fixed cylinder 19, so that the first contact 21 is moved to close to the direction of the second wafer 22, when the second wafer 22 and the
After the contact of one contact 21, be connected to extraneous power supply, series circuit is connected, and caution bell 26 sends out warning, prompting worker withdraw mine hole or
It is to remind maintenance personal timely to repair, therefore the device can have the function that security warning.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. a kind of coal mine with safe warning function mine hole fixing device, including fixed frame (1), the fixed frame (1)
Madial wall is hinged with the first bearing plate (2) and the second bearing plate (3), it is characterised in that：First bearing plate (2) and second is held
It is connected by elastic string (25) between weight plate (3), and the fixed company in the lower end of the first bearing plate (2) and the second bearing plate (3)
It is connected to one end of the first spring, the other end of the first spring is fixedly connected on the madial wall of fixed frame (1), the fixed frame
(1) inner roof wall is rotatably connected to sleeve (11), and the lateral wall fixing sleeve of sleeve (11) is connected to second gear (10), and described
Two gears (10) are engaged with first gear (9), and first gear (9) is fixedly attached in rotation pipe (6), the rotation pipe (6)
Upper end be rotatably connected on the inner roof wall of fixed frame (1), and the madial wall of rotation pipe (6) be threaded with elastic string (25)
The upper end of the cutter (8) to match, the cutter (8) is fixedly connected with telescopic rod (7), and the other end of telescopic rod (7)
It is fixedly connected on the inner roof wall of fixed frame (1), the madial wall of the sleeve (11) is threaded with movable plate (13), and mobile
The lower end of plate (13) is hinged with first movement bar (14), and the other end activity of the first movement bar (14) runs through the first bearing plate
(2) it and being hinged on the outer roof of fixed case (15), the fixed case (15) is fixedly connected on the madial wall of fixed frame (1),
And activity is plugged with toggle (16) on fixed case (15), the upper end of the toggle (16) is hinged on the lower end of the first bearing plate (2)
On face, and the lower end of toggle (16) is hinged on the upper surface of swingle (17), and fixed be plugged with turns on the swingle (17)
Lever, and the both ends of rotating bar are rotatably connected on the madial wall of fixed case (15), the other end of the swingle (17) is hinged
There is push rod (18), and the other end of push rod (18) extends in fixed cylinder (19), the fixed cylinder (19) is fixedly connected on fixation
On the inner roof wall of case (15), and activity is plugged with the second mobile bar (20) in fixed cylinder (19), on second mobile bar (20)
It is wound with second spring, the both ends of second spring are respectively fixedly connected on the side wall of the second mobile bar (20) and fixed cylinder (19)
Lateral wall on, second mobile bar (20) is located at the one end of fixed cylinder (19) outside and is fixedly connected with the first contact (21), institute
State the second wafer (22) for slidably connecting in the sliding slot opened up on fixed case (15) and matching with the first contact (21), and second
It is connected by third spring between the upper end of contact (22) and the roof of sliding slot, the lower end of the second wafer (22), which is fixed, to be connected
It is connected to one end of steel cable (23), and the other end of steel cable (23) around fixed pulley (24) and is fixed through the side wall of fixed case (15)
It is connected on the lower face of the second bearing plate (3), the fixed pulley (24) is rotatably connected on the madial wall of fixed frame (1), institute
The inner bottom wall for stating fixed case (15) is fixedly connected with caution bell (26).
2. a kind of coal mine with safe warning function according to claim 1 mine hole fixing device, it is characterised in that：
The upper end of first bearing plate (2) contradicts and is connected with supports block (4), and the groove bottom wall opened up in supports block (4) is fixedly connected with
The other end of one end of the 4th spring, the 4th spring is fixedly connected on the lower face of support rod (5), the upper end of the support rod (5)
It is hinged on the inner roof wall of fixed frame (1).
3. a kind of coal mine with safe warning function according to claim 2 mine hole fixing device, it is characterised in that：
The lower end of the supports block (4) is in convex structure, and is provided with anti-skid chequer.
4. a kind of coal mine with safe warning function according to claim 1 mine hole fixing device, it is characterised in that：
The madial wall of the sleeve (11) is fixedly connected with multiple limited blocks (12), and the quantity of limited block (12) is more than six, and in etc.
Apart from annular spread.
5. a kind of coal mine with safe warning function according to claim 1 mine hole fixing device, it is characterised in that：
The rotation angle of the swingle (17) is more than 30 degree.
6. a kind of coal mine with safe warning function according to claim 1 mine hole fixing device, it is characterised in that：
Second mobile bar (20) is located at the trapezoidal structure in one end in fixed cylinder (19).
7. a kind of coal mine with safe warning function according to claim 1 mine hole fixing device, it is characterised in that：
The push rod (18) is more than the second wafer (22) to hanging down between the first contact (21) to the distance between the second mobile bar (20)
Straight distance.
8. a kind of coal mine with safe warning function according to claim 1 mine hole fixing device, it is characterised in that：
The lateral wall of the fixed case (15) is circumferentially fixed to be socketed with one layer of diaphragm seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810491791.0A CN108708754A (en) | 2018-05-22 | 2018-05-22 | A kind of coal mine with safe warning function mine hole fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810491791.0A CN108708754A (en) | 2018-05-22 | 2018-05-22 | A kind of coal mine with safe warning function mine hole fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108708754A true CN108708754A (en) | 2018-10-26 |
Family
ID=63869326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810491791.0A Withdrawn CN108708754A (en) | 2018-05-22 | 2018-05-22 | A kind of coal mine with safe warning function mine hole fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108708754A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410117A (en) * | 2019-08-05 | 2019-11-05 | 鲁维彬 | A kind of surrounding rock tunnel supporting construction |
| CN111102010A (en) * | 2019-12-23 | 2020-05-05 | 山东东山新驿煤矿有限公司 | Mine hole fixing device for coal mine with safety warning effect |
-
2018
- 2018-05-22 CN CN201810491791.0A patent/CN108708754A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410117A (en) * | 2019-08-05 | 2019-11-05 | 鲁维彬 | A kind of surrounding rock tunnel supporting construction |
| CN111102010A (en) * | 2019-12-23 | 2020-05-05 | 山东东山新驿煤矿有限公司 | Mine hole fixing device for coal mine with safety warning effect |
| CN111102010B (en) * | 2019-12-23 | 2021-03-02 | 山东东山新驿煤矿有限公司 | Mine hole fixing device for coal mine with safety warning effect |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108708754A (en) | A kind of coal mine with safe warning function mine hole fixing device | |
| CN108005658B (en) | High-efficient rock drill | |
| CN204530447U (en) | Bridge displacement locking friction pendulum support | |
| CN208473906U (en) | A kind of coal mine with safe warning function fixes device with mine hole | |
| CN209256383U (en) | A kind of positioning compression tooling for fire resistant doorsets | |
| CN202231396U (en) | Cable moving device for coal mining machine | |
| CN204004401U (en) | Rig wireline pulley sealing configuration | |
| CN102332696A (en) | Electrical cable moving device for coal mining machine | |
| CN203998745U (en) | The tower machine suspension hook disconnected rope anti-drop device of rushing to summit | |
| CN207701063U (en) | A kind of remote-controlled rotation and lifting insulating ladder maintenance ladder | |
| CN201519392U (en) | Falling protector used for vertical guide rail | |
| CN204255065U (en) | Flexible catch wheel device | |
| CN203972682U (en) | A kind of reinforcing bar rounding apparatus | |
| RU151164U1 (en) | SELF-CENTERED HOLE TUBE WIPER | |
| CN206419453U (en) | A kind of rig high-altitude fixed pulley structure | |
| CN212837893U (en) | Snake-shaped anchor rod | |
| CN203961020U (en) | For top mould system support box beam falling proof device | |
| CN204604595U (en) | A kind of bucket type mixing plant lifting device | |
| CN204689585U (en) | Municipal administration is speedily carried out rescue work elevator | |
| CN203754320U (en) | Foldable cantilever pulley | |
| CN204751071U (en) | Be applied to working head of clear storehouse of cement bunker machine | |
| CN208538307U (en) | A kind of novel building equipment alarm device | |
| CN208770122U (en) | A kind of condom tool of production | |
| CN204188324U (en) | Rotator construction dynamometry turning hinge | |
| CN204126567U (en) | Placed in the middle and the casing wear prevention downhole tool of geological resource exploration drilling drilling tool righting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181026 |