CN203811444U - Concrete powder drilling machine - Google Patents
Concrete powder drilling machine Download PDFInfo
- Publication number
- CN203811444U CN203811444U CN201420224001.XU CN201420224001U CN203811444U CN 203811444 U CN203811444 U CN 203811444U CN 201420224001 U CN201420224001 U CN 201420224001U CN 203811444 U CN203811444 U CN 203811444U
- Authority
- CN
- China
- Prior art keywords
- drillings
- powder
- concrete
- drill bit
- test specimen
- 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.)
- Expired - Fee Related
Links
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a concrete powder drilling machine. The concrete powder drilling machine comprises a rack, a test sample clamping base and a powder drilling mechanism, wherein the test sample clamping base is mounted on the rack and used for clamping test samples in different sizes; the powder drilling mechanism is used for drilling powder of the test samples; the test sample clamping base is located above the powder drilling mechanism; a first driving part is arranged at the upper part of the rack and used for driving the test sample clamping base to lift and fall; a linear guide rail is also arranged on the rack and used for supporting and guiding the test sample clamping base to move up and down; the powder drilling mechanism comprises a powder drilling part and a second driving part; the second driving part is used for driving the powder drilling part to rotate; the outer side of the powder drilling part is sleeved by a telescopic powder sample collection cover; the powder drilling part comprises a drill bit and an adjusting assembly; the adjusting assembly is used for adjusting the operation range of the drill bit. The concrete powder drilling machine has the functions of accurately controlling the constant powder drilling speed and the depth for drilling and grinding layer by layer and automatically collecting powder samples, so that the labor strength for drilling powder is reduced, and the test accuracy is improved.
Description
Technical field
The utility model belongs to civil engineering work testing equipment field, relates in particular to a kind of concrete drillings machine.
Background technology
Concrete expert and engineering reality all show both at home and abroad, thereby villaumite causes that it is topmost failure mode that steel bar corrosion causes structure premature failure.In recent decades, the method that characterizes ion penetration resistance of concrete is that test chlorion under electric field action is invaded speed mostly, and in Quick Measuring test result and entity structure, the intrusion rule of chlorion has very big-difference.For the regularity of distribution of chlorion in concrete in true reflection actual environment, generally need to test concrete exposes test specimen or from entity structure, gets core, from surface to inside, according to certain bed thickness, carry out drillings, chlorine ion concentration in different depth place, measuring distance surface powder sample, common every 2mm, 3mm, every layer of 5mm, and solve the concrete chloride permeability coefficient of entity structure by existing model.A large amount of evidences, the more inner height of concentration of the corrosive mediums such as chlorion in the concrete of top layer is a lot, and the not long situation of Years Of Service especially, such as 5 years, within 10 years.At present often by motor, drive a tiny hollow drill bit, the whole device of artificial rotation in certain area, not only rotation but also revolve round the sun of drill bit.There is following defect in this complete equipment: 1) in the process of drillings, operating personnel need to ceaselessly measure drilling depth, and when approaching the degree of depth requiring, frequent shutdown, to guarantee that powder sample, at set depth range, causes drillings inefficiency; 2) by a not too thick annular billet, limit drill bit scope of work, but in actual drillings process, drill bit can be encountered the edge on top layer unavoidably, and top layer powder sample on the test result impact of which floor powder sample below significantly, just because of cannot guarantee to bore drill bit in the process of grinding lower one deck, do not brush up against each layer above, cause test result distortion; 3) manual operation causes drill bit drill speed to have very large randomness, the powder sample fineness difference that directly causes boring mill is large (from several microns to 1mm) very, and in the time period that powder sample dissolves in the acid solution of arranging or water, the grain size of powder sample for the how many impacts of the chlorion being dissolved out significantly; 4) bore and ground after one deck, need to shut down, and the powder sample that bores mill is collected and taken out; existing equipment is difficult to powder sample to be cleaned out; the random powder sample that is mingled with last layer in lower floor's powder sample, and the concrete content of uncertain impact, thus test result distortion caused.In addition, there is the defects such as control accuracy is low, test error is large, operating efficiency is low, labor strength is large in existing drillings equipment, cannot adapt to the drillings work of test specimen in enormous quantities mostly.
As can be seen here, existing equipment awaits further improving.
Utility model content
The utility model is the weak point of avoiding above-mentioned prior art to exist, and a kind of concrete drillings machine is provided.
The technical scheme that the utility model adopts is:
Concrete drillings machine, comprise frame, be arranged in frame and for the test specimen grip slipper that the test specimen of different sizes is clamped and the drillings mechanism that test specimen is carried out to drillings, test specimen grip slipper is positioned at the top of drillings mechanism, the top of frame is provided with the first drive division for the lifting of motoring ring test sample clamping seat, in frame, be also provided with the line slideway for supporting and guiding test specimen grip slipper to move up and down, drillings mechanism comprises drillings portion and drives the second drive division of drillings portion rotation, the outside of drillings portion is equipped with extension type powder sample collecting hood, drillings portion comprises drill bit and the adjusting part that the scope of work of drill bit is adjusted, described concrete drillings machine also comprises for to first, the control device that the second drive division is controlled.
Described the first drive division comprises rack-mounted hydraulic cylinder, on the upper surface of test specimen grip slipper, is fixed with Connection Block, and this Connection Block is connected with the piston rod of hydraulic cylinder.
Described drill bit comprises knife rest and cutter, knife rest comprises connected left socle and right support, the relative position place of left and right support inner side all offers chute, described adjusting part comprises the cutter back up pad for mounting cutter, in the left and right both ends of the surface of cutter back up pad, all convex with first slide block suitable with chute, the top of cutter back up pad is installed with tooth bar, and the top of tooth bar is provided with the gear being meshed with tooth bar, in gear, be equipped with gear shaft, this gear shaft runs through left and right support.
Described the second drive division comprises motor, and the output shaft of motor is connected with the transmission shaft that is arranged on knife rest top, in described frame, is provided with motor mounting rack.
The outside of described left and right support is respectively arranged with the limit assembly that prevents that drill bit from moving left and right, limit assembly comprises and is nested with at the ratchet of gear shaft terminal and is arranged on respectively on left and right support and the rotation of each ratchet is played to the card article of inhibition, between card article and left and right support, be provided with the spring for card article is locked, between ratchet and gear shaft for key is connected, the ratchet of two ratchets towards the opposite.
Described frame comprises three brace summers, and wherein one is positioned at rear, and two other side by side and be positioned at the place ahead, between adjacent two brace summers, be provided with many reinforcements, the top of frame is provided with baffle plate, and this baffle plate is triangular in shape, is detachable connection between baffle plate and each brace summer.
Described test specimen grip slipper comprises grip block and lower grip block, spacing between upper and lower grip block is adjustable, on lower grip block, offer the through hole that can pass for drill bit, described extension type powder sample collecting hood is connected with drill bit by bearing, the lower surface of lower grip block is close in uncovered and this upper end, the upper end of extension type powder sample collecting hood, and the lower end of extension type powder sample collecting hood is provided with powder spout.
Described upper grip block comprises top board, and lower grip block comprises base plate, and above-mentioned through hole is opened on this base plate, and described top board and base plate are all equilateral triangle, and the top at the bottom at three angles of top board and three angles of base plate is all installed with projection.
Described line slideway has three, its phase that is arranged on respectively above-mentioned three brace summers to the inside, described test specimen grip slipper is positioned at three brace summers and coordinates the ring of encirclement forming, and the outside of each projection of described top board and base plate is all fixed with second slide block suitable with described three line slideways.
Described motor locating rack comprises the first location-plate for mounted motor, and the first location-plate is triangular in shape, and three drift angle places of the first location-plate all convex with the second location-plate being connected with frame.
Owing to having adopted technique scheme, the obtained beneficial effect of the utility model is:
1, the utility model can be realized at the uniform velocity drillings drill speed, different depth place powder sample do not mix mutually, successively bore the mill accurate control of the degree of depth, the height of powder sample particle is even and the functions such as automatic collection of powder sample, significantly improved the representativeness of powder sample, the labour intensity that has reduced drillings, has improved measuring accuracy.
2, the utlity model has higher control accuracy and operating efficiency, test error is less, and labor strength is lower, can adapt to the drillings work of test specimen in enormous quantities.
3, the utility model is simple in structure, and installation and maintenance are convenient and cost of manufacture is lower.
Accompanying drawing explanation
Fig. 1 is to be originally the assembly structure schematic diagram of utility model.
Fig. 2 shows the utility model and removes the principle schematic after test specimen and extension type powder sample collecting hood.
Fig. 3 shows specimen sample and test specimen grip slipper structural representation partly in the utility model.
Fig. 4 shows the assembly relation schematic diagram of motor and drill bit in the utility model.
Fig. 5 shows the bit part in the utility model, is its decomposition texture principle schematic.
Wherein,
1, frame 101, brace summer 102, reinforcement 103, baffle plate 104, line slideway 2, test specimen grip slipper 201, test specimen 202, top board 203, base plate 204, projection 205, the second slide block 206, through hole 207, thru-bolt 3, the first drive division 301, hydraulic cylinder 302, Connection Block 4, drill bit 401, cutter 402, left socle 403, right support 404, chute 5, the second drive division 501, motor 502, the first location-plate 503, the second location-plate 6, extension type powder sample collecting hood 601, powder spout 602, bearing 7, adjusting part 701, cutter back up pad 702, the first slide block 703, tooth bar 704, gear 705, gear shaft 8, limit assembly 801, ratchet 802, card article 803, spring
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail, but the utility model is not limited to these embodiment.
As shown in Figures 1 to 5, concrete drillings machine, comprise frame 1, be arranged in frame 1 and for the test specimen grip slipper 2 that the test specimen of different sizes is clamped and the drillings mechanism that test specimen is carried out to drillings, test specimen grip slipper 2 is positioned at the top of drillings mechanism, described frame 1 comprises three brace summers 101, wherein one is positioned at rear, two other side by side and be positioned at the place ahead, and three brace summer 101 is equilateral triangle layout, between adjacent two brace summers 101, be provided with many reinforcements 102, the top of frame 1 is provided with baffle plate 103, this baffle plate 103 is triangular in shape, it between baffle plate 103 and each brace summer 101, is detachable connection, the top of frame 1 is provided with the first drive division 3 for 2 liftings of motoring ring test sample clamping seat, in frame 1, be also provided with the line slideway 104 moving up and down for supporting and guide test specimen grip slipper 2, described line slideway 104 has three, its phase that is arranged on respectively above-mentioned three brace summers 101 to the inside, described test specimen grip slipper 2 is positioned at three brace summers 101 and coordinates the ring of encirclement forming, described test specimen grip slipper 2 comprises grip block and lower grip block, on, between lower grip block, by three thru-bolts 207, be connected, and realize location between the two by set nut, according to the difference of test specimen size, on adjustable, spacing between lower grip block, described upper grip block comprises top board 202, lower grip block comprises base plate 203, described top board 202 and base plate 203 are all triangular in shape, and the top at the bottom at three angles of top board 202 and three angles of base plate 203 is all installed with projection 204, the outside of each projection 204 is all fixed with second slide block 205 suitable with described three line slideways 104, drillings mechanism comprises drillings portion and drives the second drive division 5 of drillings portion rotation, the outside of drillings portion is equipped with extension type powder sample collecting hood 6, the lower end of extension type powder sample collecting hood 6 is provided with powder spout 601, by this powder spout 601, the concrete powder grinding can be derived, the adjusting part 7 that drillings portion comprises drill bit 4 and the scope of work of drill bit 4 is adjusted, on described base plate 203, offer the through hole 206 that can pass for drill bit 4, the diameter of this through hole 206 is greater than the maximum operation radius of drill bit, described extension type powder sample collecting hood 6 is connected with drill bit 4 by bearing 602, and between the two for being tightly connected, whether selection extension type powder sample collecting hood 6 that can be artificial in the time of can making drill bit 4 rotate rotates, the lower surface of base plate 203 is close in uncovered and this upper end, the upper end of extension type powder sample collecting hood 6.
As shown in Figures 1 and 2, described the first drive division 3 comprises the hydraulic cylinder 301 that the lower surface with above-mentioned baffle plate 103 is connected, on the upper surface of described top board 202, be fixed with Connection Block 302, this Connection Block 302 is connected with the piston rod of hydraulic cylinder 301, when test specimen clamping on test specimen grip slipper 2 after, both do as a wholely under the promotion of hydraulic cylinder 301, along line slideway 104, to move up and down.
As shown in Figure 5, described drill bit 4 comprises knife rest and cutter 401, knife rest comprises connected left socle 402 and right support 403, left, the relative position place of right support inner side all offers chute 404, described adjusting part 7 comprises the cutter back up pad 701 for mounting cutter 401, a left side for cutter back up pad 701, in right both ends of the surface, all convex with first slide block 702 suitable with chute 404, the top of cutter back up pad 701 is installed with tooth bar 703, the top of tooth bar 703 is provided with the gear 704 being meshed with tooth bar 703, in gear 704, be equipped with gear shaft 705, it is left that gear shaft 705 runs through, right support, in the course of work, adjust after the height of extension type powder sample collecting hood 6, rotary teeth wheel shaft 705 can be selected the size of drill bit 4 operating radius, increasing along with drilling depth, can be by 705 driven gear 704 rotations of rotary teeth wheel shaft, and then with the transverse shifting of carry-over bar 703, the movement of tooth bar 703 is ordered about cutter back up pad 701 and is moved along chute 404, finally changed the operating radius of the cutter 401 being arranged in cutter back up pad 701, visible, it is adjustable that the structural design of rack-and-pinion has realized drillings area in the situation that not changing drill bit 4 size, along with the increasing of drilling depth, drillings area dwindles gradually, thereby reduced and at different depth place, got the impact of powder on adjacent degree of depth powder sample, improved the representativeness of powder sample.In addition, a described left side, the outside of right support is respectively arranged with the limit assembly 8 that prevents that drill bit 4 from moving left and right, limit assembly 8 comprises and is nested with at the ratchet 801 of gear shaft terminal and is arranged on respectively a left side, on right support and the rotation of each ratchet 801 is played to the card article 802 of inhibition, card article 802 is with left, between right support, be provided with the spring 803 for card article 802 is locked, between ratchet 801 and gear shaft 705 for key is connected, the ratchet of two ratchets 801 towards the opposite, one in two ratchets 801 for preventing that drill bit 4 is to left movement, another moves right for preventing drill bit 4, thereby guaranteed that the scope of work of drill bit 4 in drillings process midplane and depth direction can not change.
As shown in Figures 2 and 4, described the second drive division 5 comprises motor 501, and the output shaft of motor 501 is connected with the transmission shaft that is arranged on knife rest top, in described frame 1, is provided with motor mounting rack; Described motor locating rack comprises for the first location-plate 502, the first location-plates 502 of mounted motor 501 triangular in shape, and three drift angle places of the first location-plate 502 all convex with the second location-plate 503 being connected with frame 1.
Described concrete drillings machine also comprises for to first, the control device that the second drive division is controlled, this control device can promote the distance that test specimen grip slipper 2 advances and the distance that test specimen grip slipper 2 is retracted is controlled to hydraulic cylinder piston rod, meanwhile, can control the startup of motor 501 and stall, thereby realized in drillings process, operating personnel does not need measurement drilling depth repeatedly, and approaching while will ask for the degree of depth of powder, make motor 501 stalls, and then drill bit 4 stops boring, guaranteed that powder sample samples in set depth range.
The utility model be mainly used in making test concrete expose in test specimen or entity structure concrete core sample corrosive medium with concentration needed powder sample during apart from surperficial depth profile.The course of work of the present utility model is roughly: test specimen is put into test specimen grip slipper 2 fixing, rotary teeth wheel shaft 705 is to adjust the operating radius of drill bit 4, starter motor 501 and hydraulic cylinder 301, concrete sample slowly contacts drill bit 4 and starts drillings, and powder sample falls at random extension type powder sample collecting hood 6 and derives from powder spout 601; When drilling depth reaches predetermined value, drill bit 4 stops creeping into, and again adjusts the height of extension type powder sample collecting hood 6, rotary teeth wheel shaft 705, thus dwindle the operating radius of drill bit 4, repeat aforesaid operations, until drilling depth reaches predetermined maximal value.After treating drillings, disable motor 501, recovery test sample clamping seat makes drill bit 4 separated with test specimen, closes hydraulic cylinder 301, dismounting concrete sample, whole drillings process finishes.
The part of not addressing in the utility model adopts or uses for reference prior art and can realize.
In description of the present utility model, it will be appreciated that, term " on ", orientation or the position relationship of the indication such as D score, 'fornt', 'back', " left side ", " right side ", " top ", " end " " interior ", " outward " be based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, rather than indicate or imply that the device of indication or element must have specific orientation, with specific orientation, construct and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, " first " in the utility model, " second " be only for describing object, and can not be interpreted as indication or hint relative importance.
Although more used terms such as frame 1, reinforcement 102, line slideway 104, test specimen grip slipper 2, top board 202, the second slide block 205, chute 404, powder spout 601, adjusting part 7, card article 802 herein, do not got rid of the possibility of using other term.Use these terms to be only used to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with spirit of the present utility model.
Need to further illustrate, specific embodiment described herein is only to spiritual example explanation of the present utility model.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (10)
1. concrete drillings machine, it is characterized in that: comprise frame, be arranged in frame and for the test specimen grip slipper that the test specimen of different sizes is clamped and the drillings mechanism that test specimen is carried out to drillings, test specimen grip slipper is positioned at the top of drillings mechanism, the top of frame is provided with the first drive division for the lifting of motoring ring test sample clamping seat, in frame, be also provided with the line slideway for supporting and guiding test specimen grip slipper to move up and down, drillings mechanism comprises drillings portion and drives the second drive division of drillings portion rotation, the outside of drillings portion is equipped with extension type powder sample collecting hood, drillings portion comprises drill bit and the adjusting part that the scope of work of drill bit is adjusted, described concrete drillings machine also comprises for to first, the control device that the second drive division is controlled.
2. concrete drillings machine according to claim 1, is characterized in that: described the first drive division comprises rack-mounted hydraulic cylinder, on the upper surface of test specimen grip slipper, is fixed with Connection Block, and this Connection Block is connected with the piston rod of hydraulic cylinder.
3. concrete drillings machine according to claim 1, it is characterized in that: described drill bit comprises knife rest and cutter, knife rest comprises connected left socle and right support, the relative position place of left and right support inner side all offers chute, described adjusting part comprises the cutter back up pad for mounting cutter, in the left and right both ends of the surface of cutter back up pad, all convex with first slide block suitable with chute, the top of cutter back up pad is installed with tooth bar, the top of tooth bar is provided with the tooth bar being meshed with tooth bar, in tooth bar, be equipped with gear shaft, this gear shaft runs through left and right support.
4. concrete drillings machine according to claim 3, is characterized in that: described the second drive division comprises motor, and the output shaft of motor is connected with the transmission shaft that is arranged on knife rest top, in described frame, is provided with motor mounting rack.
5. concrete drillings machine according to claim 3, it is characterized in that: the outside of described left and right support is respectively arranged with the limit assembly that prevents that drill bit from moving left and right, limit assembly comprises and is nested with at the ratchet of gear shaft terminal and is arranged on respectively on left and right support and the rotation of each ratchet is played to the card article of inhibition, between card article and left and right support, be provided with the spring for card article is locked, between ratchet and gear shaft for key is connected, the ratchet of two ratchets towards the opposite.
6. concrete drillings machine according to claim 1, it is characterized in that: described frame comprises three brace summers, wherein one is positioned at rear, two other side by side and be positioned at the place ahead, between adjacent two brace summers, be provided with many reinforcements, the top of frame is provided with baffle plate, and this baffle plate is equilateral triangle, is detachable connection between baffle plate and each brace summer.
7. concrete drillings machine according to claim 6, it is characterized in that: described test specimen grip slipper comprises grip block and lower grip block, spacing between upper and lower grip block is adjustable, on lower grip block, offer the through hole that can pass for drill bit, described extension type powder sample collecting hood is connected with drill bit by bearing, the lower surface of lower grip block is close in uncovered and this upper end, the upper end of extension type powder sample collecting hood, and the lower end of extension type powder sample collecting hood is provided with powder spout.
8. concrete drillings machine according to claim 7, it is characterized in that: described upper grip block comprises top board, lower grip block comprises base plate, above-mentioned through hole is opened on this base plate, described top board and base plate are all triangular in shape, and the top at the bottom at three angles of top board and three angles of base plate is all installed with projection.
9. concrete drillings machine according to claim 8, it is characterized in that: described line slideway has three, its phase that is arranged on respectively above-mentioned three brace summers to the inside, described test specimen grip slipper is positioned at three brace summers and coordinates the ring of encirclement forming, and the outside of each projection of described top board and base plate is all fixed with second slide block suitable with described three line slideways.
10. concrete drillings machine according to claim 4, it is characterized in that: described motor locating rack comprises the first location-plate for mounted motor, the first location-plate is triangular in shape, and three drift angle places of the first location-plate all convex with the second location-plate being connected with frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420224001.XU CN203811444U (en) | 2014-05-04 | 2014-05-04 | Concrete powder drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420224001.XU CN203811444U (en) | 2014-05-04 | 2014-05-04 | Concrete powder drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203811444U true CN203811444U (en) | 2014-09-03 |
Family
ID=51450180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420224001.XU Expired - Fee Related CN203811444U (en) | 2014-05-04 | 2014-05-04 | Concrete powder drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203811444U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954489A (en) * | 2014-05-04 | 2014-07-30 | 青岛林川工程技术咨询有限公司 | Dust drilling machine for concrete |
-
2014
- 2014-05-04 CN CN201420224001.XU patent/CN203811444U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954489A (en) * | 2014-05-04 | 2014-07-30 | 青岛林川工程技术咨询有限公司 | Dust drilling machine for concrete |
| CN103954489B (en) * | 2014-05-04 | 2016-05-18 | 青岛林川工程技术咨询有限公司 | Concrete drillings machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207197844U (en) | A kind of engineering exploration soil rapid sampling attachment | |
| CN207567744U (en) | Road lime soil foundation compactedness measurement sampler | |
| CN102518105A (en) | Seabed static sounding penetration device | |
| CN103954475A (en) | Dust taking apparatus for concrete of solid structure | |
| CN103954489A (en) | Dust drilling machine for concrete | |
| CN106769285A (en) | It is a kind of to make many joints and with the cutter sweep of different joints characteristics rock samples | |
| CN103674749B (en) | Concrete curing rear surface strength testing device and test method thereof | |
| CN107914030A (en) | A kind of wall-hanging solar installation drilling device | |
| CN203811444U (en) | Concrete powder drilling machine | |
| CN210774802U (en) | Novel sampling of heavy metal contaminated soil device | |
| CN109197808A (en) | Icebreaking device is used in a kind of fishing of winter | |
| CN209887901U (en) | Novel concrete core drilling machine | |
| CN219456156U (en) | Soil heavy metal content short-term test equipment | |
| CN117664640A (en) | Sampling device for soil detection capable of taking soil in layered mode | |
| CN213121174U (en) | Geological exploration soil collection system based on gather different degree soil of depth | |
| CN219552415U (en) | Mine stone soil water content measuring equipment | |
| CN211898283U (en) | Rotatory digging device of soil subgrade compactness | |
| CN203837948U (en) | Solid structure concrete powder taking equipment | |
| CN103669190A (en) | Cutting radius adjusting mechanism of circumference cutter | |
| CN108413931B (en) | Monitoring device for building | |
| CN114062082B (en) | Device and method for preparing undisturbed soil triaxial sample through spin-drop | |
| CN216050132U (en) | Multilayer underground water level observation device for hydrogeological hole | |
| CN212082884U (en) | Concrete core drilling machine for supervision | |
| CN211527269U (en) | Thickness detection device for plastic course | |
| CN211235863U (en) | Concrete penetration resistance appearance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20150504 |
|
| EXPY | Termination of patent right or utility model |