CN112900408A - Engineering is managed with exploring borer machine - Google Patents
Engineering is managed with exploring borer machine Download PDFInfo
- Publication number
- CN112900408A CN112900408A CN202110146622.5A CN202110146622A CN112900408A CN 112900408 A CN112900408 A CN 112900408A CN 202110146622 A CN202110146622 A CN 202110146622A CN 112900408 A CN112900408 A CN 112900408A
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- rod
- plate
- fixed
- turntable
- bottom plate
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- 230000005484 gravity Effects 0.000 claims description 29
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 2
- 239000002689 soil Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 239000000523 sample Substances 0.000 description 5
- 230000035515 penetration Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
- E02D1/02—Investigation of foundation soil in situ before construction work
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Soil Sciences (AREA)
- Analytical Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a drill rod detecting machine for engineering supervision, which belongs to the field of construction and exploration equipment and comprises a bottom plate, wherein a plurality of wheels are installed on the bottom wall of the bottom plate, four upright rods are installed on the top wall of the bottom plate, a top plate is installed at the top ends of the upright rods together, a first motor is installed on the top wall of the top plate, a driving end of the first motor penetrates through the lower side of the top plate and is provided with a threaded pipe, a threaded rod is installed in the threaded pipe in a threaded manner, a supporting rod is installed at the bottom end of the threaded pipe, a front side plate is installed on the two upright rods positioned on the front side of the bottom plate in a sliding manner, and a rear side plate is. The drill rod probing device disclosed by the invention is mechanically operated, the drill rod probing device can be used for quickly and conveniently tamping the drill rod repeatedly at one time, the operation efficiency is higher, the verticality of the drill rod probing device entering the stratum can be ensured, and the detection accuracy of the stratum compactness is further ensured.
Description
Technical Field
The invention relates to the technical field of construction exploration equipment, in particular to a drill rod exploring machine for engineering supervision.
Background
The method comprises the following steps of (1) exploring the soil layer condition of a foundation before building construction to know the soil layer condition; the method is characterized in that a hammer with the weight of 8-10 pounds is manually swung to the height of 70-80 cm, then the hammer falls freely, and the steel chisel is driven into a soil layer at a point, wherein each driving time is 30-50 cm, five driving steps are carried out, and the depth is 1.5-2.5 m. The number of the hammers is recorded once per section of the soil layer, if the number of the hammers is the same, the soil layer is uniform, and if the number of the hammers is less, the soil layer in the section has a loose or hollow underground structure.
In the prior art, the drill rod penetrating machine for engineering supervision is mainly used for gradually tamping and smashing a drill rod into an underground soil layer in a manual hammer swinging mode, the force of each operation is uncontrollable, a large amount of labor cost is consumed, time and labor are wasted, and the efficiency is low.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a drill rod detecting machine for engineering supervision.
In order to achieve the purpose, the invention adopts the following technical scheme:
a drilling rod detection machine for engineering supervision comprises a bottom plate, wherein a plurality of wheels are installed on the bottom wall of the bottom plate, four vertical rods are installed on the top wall of the bottom plate, a top plate is installed at the top ends of the vertical rods together, a first motor is installed on the top wall of the top plate, a driving end of the first motor penetrates through the lower side of the top plate and is provided with a threaded pipe, a threaded rod is installed in the threaded pipe through threads, a supporting rod is installed at the bottom end of the threaded rod, a front side plate is installed on two vertical rods located on the front side of the bottom plate in a common sliding mode, a rear side plate is installed on two vertical rods located on the rear side of the bottom plate in a common sliding mode, the front end of the supporting rod is fixed with the front side plate, a sleeve is sleeved at the rear end of;
a rotating rod is arranged at the center of the rear side of the plane turntable, the rear end of the rotating rod sequentially penetrates through the non-coplanar turntable and the rear side plate, and is fixed at the driving end of a second motor, the second motor is fixed at the rear side of the rear side plate, the non-coplanar turntable is fixed at the front side of the rear side plate through a fixing rod, a rear high-level surface and a front low-level surface are arranged on one side of the non-coplanar rotary disc far away from the rear side plate, a slide hole is arranged at the position of the planar rotary disc close to the circumference of the planar rotary disc, a telescopic mechanism is arranged between the sliding hole and the non-coplanar rotary table, the telescopic mechanism comprises a telescopic rod which is in sliding fit with the sliding hole, a pulley is arranged at one end of the telescopic rod close to the non-coplanar rotary table, a first spring is wound at one end of the telescopic rod close to the non-coplanar rotary table, a gravity block is arranged on the lower side of the plane turntable, a hook is arranged on the top surface of the gravity block, and the hook is matched with the front end of the telescopic rod;
the gravity block is characterized in that two positioning plates are symmetrically arranged on the lower side of the gravity block, the bottom ends of the positioning plates are fixed on the top surface of the bottom plate, vertical grooves are formed in two sides of the gravity block, the two positioning plates are slidably mounted on two sides of the gravity block through the vertical grooves respectively, a through hole is formed in the middle of the bottom plate in a penetrating mode, a positioning sleeve is arranged on the lower side of the through hole, L-shaped frames are fixed on two sides of the positioning sleeve respectively, the top end of each L-shaped frame penetrates through the upper side of the bottom plate and is provided with a second spring, a drill rod is inserted in the positioning sleeve in a sliding mode, and the top end of.
Furthermore, the probing rod is formed by vertically assembling a plurality of rod bodies through threaded columns, a pointed end is arranged at the bottom end of the rod body at the lowest side, an auxiliary plate is movably mounted at the top of the rod body at the uppermost side through a lantern ring, the lantern ring is fixed with the bottom wall of the auxiliary plate, and the auxiliary plate is located under the gravity block.
Furthermore, a limiting ring is fixed at one end, close to the pulley, of the telescopic rod, one end of the first spring is fixed with the limiting ring, and the other end of the first spring is fixed with the rear side wall of the plane turntable.
Further, the wheels are universal wheels, and the pulleys are universal wheels.
Furthermore, the inner wall of the positioning plate is embedded with a ball, and the positioning plate is in sliding contact with the vertical groove in the side face of the gravity block through the ball.
Furthermore, a connecting seat is fixed at the bottom end of the threaded rod, the connecting seat is sleeved on the supporting rod, and the connecting seat is of a rectangular plate structure.
Furthermore, the rear high-level surface and the front low-level surface of the different-surface rotary table are respectively positioned on two symmetrical vertical surfaces, a rotary hole matched with the rotary rod penetrates through the circle center of the different-surface rotary table, and the diameter of the rotary hole is larger than that of the rotary rod.
Further, the first motor and the second motor are both servo motors, and the first motor and the threaded pipe are both externally connected with a single chip microcomputer.
Compared with the prior art, the invention has the beneficial effects that:
1. the probing rod is driven by the first motor and the second motor respectively, and can lift and pick the balancing weight repeatedly, so that the probing rod is gradually rammed and smashed into the ground by using energy generated when the balancing weight falls, the whole process is completely mechanized, the labor cost is greatly reduced, and the efficiency is improved.
2. The invention can keep the verticality of the penetration rod entering the stratum when the penetration rod is tamped, so that the penetration rod is uniformly stressed, and the detection accuracy of the stratum compactness is ensured.
In conclusion, the drill rod probing device disclosed by the invention adopts mechanical operation, the drill rod is quickly and conveniently tamped repeatedly at one time, the operation efficiency is higher, the verticality of the drill rod entering the stratum can be ensured, and the precision of stratum compactness detection is further ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a front view of a drill rod penetrating machine for project supervision according to the present invention;
FIG. 2 is a right side view of a drill rod penetrating machine for project supervision according to the present invention;
FIG. 3 is a schematic view of the telescopic mechanism of the present invention located at the front low level of the out-of-plane turntable;
FIG. 4 is a schematic diagram of the telescopic mechanism of the present invention located at the rear high level of the out-of-plane turntable;
FIG. 5 is a front view of the out-of-plane turntable of the present invention;
FIG. 6 is an enlarged view of a portion a of FIG. 1;
FIG. 7 is an enlarged view of a portion b of FIG. 1;
FIG. 8 is an enlarged view of a portion c of FIG. 1;
fig. 9 is an enlarged view of a portion d of fig. 1.
In the figure: the device comprises a base plate 1, wheels 2, upright rods 3, a top plate 4, a 5L-shaped frame, a positioning sleeve 6, a drill rod 7, an auxiliary plate 8, a positioning plate 9, a gravity block 10, a first motor 11, a threaded pipe 12, a threaded rod 13, a front side plate 14, a rear side plate 15, a connecting seat 16, a supporting rod 17, a sleeve 18, a plane rotary table 19, a special-surface rotary table 20, a rear high surface 200, a front low surface 2000, a second motor 21, a fixing rod 22, a hook 23, a telescopic rod 24, a first spring 25, a pulley 26, a vertical groove 27, a ball 28, a second spring 29, a threaded column 30 and a rotary rod 31.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-9, a drill rod detecting machine for engineering supervision comprises a bottom plate 1, wherein a plurality of wheels 2 are mounted on the bottom wall of the bottom plate 1, the wheels 2 are universal wheels, and the whole device can be moved and carried conveniently through the wheels 2. Install four pole settings 3 on bottom plate 1's the roof, roof 4 is installed jointly on the top of pole setting 3, install first motor 11 on roof 4, the drive end of first motor 11 runs through to roof 4's downside and installs screwed pipe 12, screwed pipe 12 internal thread installs threaded rod 13, bracing piece 17 is installed to threaded rod 13's bottom, it has preceding curb plate 14 to lie in common slidable mounting on two pole settings 3 of 1 front side of bottom plate, it has posterior lateral plate 15 to lie in common slidable mounting on two pole settings 3 of 1 rear side of bottom plate, the front end of bracing piece 17 is fixed with preceding curb plate 14, the rear end cover of bracing piece 17 is equipped with sleeve pipe 18, sleeve pipe 18's rear end is fixed with plane carousel 19, and fix the centre of a circle department at plane carousel 19.
The first motor 11 drives the threaded pipe 12 and the threaded rod 13 to perform a threaded action, so as to control the threaded rod 13 to extend and retract in the threaded pipe 12, and simultaneously drive the support rod 17, the front side plate 14 and the plane turntable 19 to lift together.
The rear side center of the plane turntable 19 is provided with a rotating rod 31, the rear end of the rotating rod 31 sequentially penetrates through the different-surface turntable 20 and the rear side plate 15 and is fixed at the driving end of the second motor 21, the second motor 21 is fixed at the rear side of the rear side plate 15, the different-surface turntable 20 is fixed at the front side of the rear side plate 15 through a fixing rod 22, and one side of the different-surface turntable 20, which is far away from the rear side plate 15, is provided with a rear high-level surface 200 and a front low-level surface 2000.
When the first motor 11 controls the plane turntable 19 to ascend and descend, the rotating rod 31, the different plane turntable 20, the rear side plate 15 and the second motor 21 can be driven to ascend and descend simultaneously.
The plane turntable 19 is provided with a sliding hole at a position close to the circumference of the plane turntable, a telescopic mechanism is arranged between the sliding hole and the different-surface turntable 20 and comprises a telescopic rod 24 in sliding fit with the sliding hole, a pulley 26 is installed at one end of the telescopic rod 24 close to the different-surface turntable 20, and the pulley 26 is a universal wheel. A first spring 25 is wound at one end of the telescopic rod 24 close to the non-coplanar rotary table 20, a gravity block 10 is arranged at the lower side of the plane rotary table 19, a hook 23 is arranged on the top surface of the gravity block 10, and the hook 23 is matched with the front end of the telescopic rod 24;
during the drive of second motor 21, drive plane carousel 19 through bull stick 31 and rotate to driving telescopic link 24 and rotating simultaneously, during the rotation, pulley 26 and the preceding side circular face contact of different face carousel 20 of the pulley 24 rear end of telescopic link specifically are: the pulley 26 can move repeatedly between the rear high level surface 200 and the front low level surface 2000 of the out-of-plane turntable 20; when the pulley 26 moves to the rear high-level surface 200, the front end of the telescopic rod 24 is retracted into the sliding hole of the plane turntable 19, and the first spring 25 is in a normal state; when the pulley 26 moves to the front low level 2000, the front end of the telescopic rod 24 extends out of the sliding hole of the plane turntable 19, and the first spring 25 is in a compressed state at this time, when extending, because the plane turntable 19 keeps rotating, the front end of the telescopic rod 24 can just extend into the hook 23 on the upper side of the counterweight 10, and as the plane turntable 19 continues to rotate, the counterweight 10 can be lifted, so that the counterweight gradually moves from the lowest position of the plane turntable 19 to the highest position of the plane turntable 19, in this process, the telescopic rod 24 is gradually retracted into the sliding hole, when reaching the highest position of the plane turntable 19, the front end of the telescopic rod 24 is completely separated from the counterweight 10, and at this time, the gravity block 10 freely falls.
The downside symmetry of gravity piece 10 is equipped with two locating plates 9, the bottom mounting of locating plate 9 is on the top surface of bottom plate 1, vertical groove 27 has been seted up to the both sides of gravity piece 10, two locating plates 9 are respectively through the both sides slidable mounting of vertical groove 27 with gravity piece 10, the through-hole has been run through at the middle part of bottom plate 1, the downside of through-hole is equipped with position sleeve 6, the both sides of position sleeve 6 are fixed with L shape frame 5 respectively, the top of L shape frame 5 is run through to the upside of bottom plate 1 and is installed second spring 29, it is equipped with probe rod 7 to slide to insert in the position sleeve 6, the top of probe rod 7 is located gravity piece 10 under. The locating plate 9 is spacing to the balancing weight 10 in the whereabouts, guarantees the degree of accuracy on its whereabouts route, can strike and visit borer 7 after gravity piece 10 descends, makes and visits borer 7 and gets into in the stratum.
The top end of the L-shaped frame 5 is provided with a second spring 29, which is intended to cushion the counterweight 10 when it is about to fall to the lowest side, reducing the impact on the bottom plate 1, the damage to the device and the noise.
In this embodiment, the probe rod 7 is formed by vertically assembling a plurality of rod bodies through the threaded columns 30, the bottom end of the rod body located at the lowest side is provided with a pointed end, the top of the rod body located at the uppermost side is movably provided with the auxiliary plate 8 through the lantern ring, the lantern ring is fixed with the bottom wall of the auxiliary plate 8, and the auxiliary plate 8 is located right below the gravity block 10.
The gravity block 10 is limited by the two positioning plates 9 in the free falling process, so that the gravity block can accurately impact on the auxiliary plate 8 and transmit the force to the probe rod 7, and the probe rod 7 enters the stratum.
In this embodiment, a limiting ring is fixed at one end of the telescopic rod 24 close to the pulley 26, one end of the first spring 25 is fixed with the limiting ring, and the other end is fixed with the rear side wall of the plane turntable 19.
In this embodiment, a ball 28 is embedded in the inner wall of the positioning plate 9, and the positioning plate 9 is in sliding contact with the vertical groove 27 on the side surface of the gravity block 10 through the ball 28. The arrangement of the balls 28 can reduce the friction between the counterweight 10 and the positioning block 9.
In this embodiment, a connecting seat 16 is fixed at the bottom end of the threaded rod 13, the connecting seat 16 is sleeved on the supporting rod 17, and the connecting seat 16 is in a rectangular plate-shaped structure. The connecting seat 16 facilitates the installation of the threaded rod 13 and the supporting rod 17.
In this embodiment, the rear high-level surface 200 and the front low-level surface 2000 of the different-surface turntable 20 are respectively located on two symmetrical vertical surfaces, a rotation hole matched with the rotation rod 31 penetrates through the center of the different-surface turntable 20, and the diameter of the rotation hole is larger than that of the rotation rod 31. The shape of the different-surface rotary table 20 is set so that the telescopic rod 24 in the telescopic mechanism can slide and stretch in the sliding hole of the plane rotary table 19.
In this embodiment, the first motor 11 and the second motor 21 are both servo motors, and the first motor 11 and the threaded pipe 12 are both externally connected to a single chip microcomputer. The first motor 11 is controlled by the singlechip to be normally installed and reversely rotated, and the second motor 21 is controlled to stably and accurately run and stop.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides a engineering prison is with exploring borer machine, includes bottom plate (1), its characterized in that, install a plurality of wheels (2) on the diapire of bottom plate (1), install four pole setting (3) on the roof of bottom plate (1), roof (4) are installed jointly on the top of pole setting (3), install first motor (11) on the roof of roof (4), screwed pipe (12) is installed to the downside that runs through to roof (4) to the drive end of first motor (11), threaded rod (13) is installed to screwed pipe (12) internal thread, bracing piece (17) are installed to the bottom of threaded rod (13), are located two of bottom plate (1) front side common slidable mounting has preceding curb plate (14) on pole setting (3), are located two of bottom plate (1) rear side common slidable mounting has posterior lateral plate (15) on pole setting (3), the front end of the supporting rod (17) is fixed with the front side plate (14), the rear end of the supporting rod (17) is sleeved with a sleeve (18), and the rear end of the sleeve (18) is fixed with a plane turntable (19) and fixed at the circle center of the plane turntable (19);
a rotating rod (31) is installed at the center of the rear side of the plane turntable (19), the rear end of the rotating rod (31) sequentially penetrates through the different-surface turntable (20) and the rear side plate (15) and is fixed at the driving end of a second motor (21), the second motor (21) is fixed at the rear side of the rear side plate (15), the different-surface turntable (20) is fixed at the front side of the rear side plate (15) through a fixing rod (22), a rear high-level surface (200) and a front low-level surface (2000) are arranged on one side, away from the rear side plate (15), of the different-surface turntable (20), a sliding hole is formed in the position, close to the circumference, of the plane turntable (19), a telescopic mechanism is arranged between the sliding hole and the different-surface turntable (20), the telescopic mechanism comprises a telescopic rod (24) in sliding fit with the sliding hole, a pulley (26) is installed at one end, close to the different-surface turntable (20), and a first spring (25) is wound at one end, close to the different-surface turntable (20), of, a gravity block (10) is arranged on the lower side of the plane turntable (19), a hook (23) is mounted on the top surface of the gravity block (10), and the hook (23) is matched with the front end of a telescopic rod (24);
the gravity block is characterized in that two positioning plates (9) are symmetrically arranged on the lower side of the gravity block (10), the bottom ends of the positioning plates (9) are fixed on the top surface of the bottom plate (1), vertical grooves (27) are formed in two sides of the gravity block (10), the two positioning plates (9) are slidably mounted on two sides of the gravity block (10) through the vertical grooves (27), a through hole is formed in the middle of the bottom plate (1) in a penetrating mode, a positioning sleeve (6) is arranged on the lower side of the through hole, L-shaped frames (5) are fixed on two sides of the positioning sleeve (6) respectively, the top end of each L-shaped frame (5) penetrates through the upper side of the bottom plate (1) and is provided with a second spring (29), a probing rod (7) is arranged in the positioning sleeve (6) in a sliding mode, and the top end of the probing rod (7).
2. The engineering supervision drill rod detecting machine according to claim 1, characterized in that the drill rod (7) is vertically assembled by a plurality of rod bodies through threaded columns (30), the bottom end of the rod body at the lowest side is provided with a tip, the top of the rod body at the uppermost side is movably provided with an auxiliary plate (8) through a lantern ring, the lantern ring is fixed with the bottom wall of the auxiliary plate (8), and the auxiliary plate (8) is positioned right below the gravity block (10).
3. The exploration drilling machine for engineering supervision according to claim 1, wherein a limit ring is fixed at one end of the telescopic rod (24) close to the pulley (26), one end of the first spring (25) is fixed with the limit ring, and the other end of the first spring is fixed with the rear side wall of the plane rotary disc (19).
4. The searing machine for project supervision according to claim 1, characterized in that the wheels (2) are universal wheels and the pulleys (26) are universal wheels.
5. The engineering supervision drill rod detecting machine according to claim 1, characterized in that the positioning plate (9) is embedded with balls (28) on the inner wall, and the positioning plate (9) is in sliding contact with the vertical grooves (27) on the side surfaces of the gravity block (10) through the balls (28).
6. The exploring borer machine for project supervision according to claim 1, wherein a connecting seat (16) is fixed at the bottom end of the threaded rod (13), the connecting seat (16) is sleeved on a supporting rod (17), and the connecting seat (16) is of a rectangular plate-shaped structure.
7. The engineering supervision drill rod penetrating machine according to claim 1, wherein the rear high-level surface (200) and the front low-level surface (2000) of the different-surface rotary table (20) are respectively located on two mutually symmetrical vertical surfaces, a rotary hole matched with the rotary rod (31) penetrates through the center of the different-surface rotary table (20), and the diameter of the rotary hole is larger than that of the rotary rod (31).
8. The probing rod machine for engineering supervision according to claim 1, wherein the first motor (11) and the second motor (21) are both servo motors, and the first motor (11) and the threaded pipe (12) are both externally connected with a single chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110146622.5A CN112900408B (en) | 2021-02-03 | 2021-02-03 | Engineering is managed with exploring borer machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110146622.5A CN112900408B (en) | 2021-02-03 | 2021-02-03 | Engineering is managed with exploring borer machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112900408A true CN112900408A (en) | 2021-06-04 |
| CN112900408B CN112900408B (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110146622.5A Expired - Fee Related CN112900408B (en) | 2021-02-03 | 2021-02-03 | Engineering is managed with exploring borer machine |
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| Country | Link |
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| CN (1) | CN112900408B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992002743A1 (en) * | 1990-08-10 | 1992-02-20 | Mitsubishi Jukogyo Kabushiki Kaisha | Vibration-damping apparatus |
| CN2740662Y (en) * | 2004-11-15 | 2005-11-16 | 张文杰 | Bore inspecting apparatus |
| CN200946263Y (en) * | 2005-08-24 | 2007-09-12 | 董建海 | Full-automatic groundsill-drilling instrument |
-
2021
- 2021-02-03 CN CN202110146622.5A patent/CN112900408B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992002743A1 (en) * | 1990-08-10 | 1992-02-20 | Mitsubishi Jukogyo Kabushiki Kaisha | Vibration-damping apparatus |
| CN2740662Y (en) * | 2004-11-15 | 2005-11-16 | 张文杰 | Bore inspecting apparatus |
| CN200946263Y (en) * | 2005-08-24 | 2007-09-12 | 董建海 | Full-automatic groundsill-drilling instrument |
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| Publication number | Publication date |
|---|---|
| CN112900408B (en) | 2022-02-18 |
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