CN209656036U - A kind of levelling rod foot pin - Google Patents
A kind of levelling rod foot pin Download PDFInfo
- Publication number
- CN209656036U CN209656036U CN201920519417.7U CN201920519417U CN209656036U CN 209656036 U CN209656036 U CN 209656036U CN 201920519417 U CN201920519417 U CN 201920519417U CN 209656036 U CN209656036 U CN 209656036U
- Authority
- CN
- China
- Prior art keywords
- bottom plate
- support plate
- screw thread
- levelling rod
- supporting leg
- 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
- 230000000712 assembly Effects 0.000 claims description 8
- 238000000429 assembly Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005259 measurement Methods 0.000 description 16
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model relates to the technical fields of engineering survey, a kind of levelling rod foot pin, bottom plate including being in triangular shape, the sliding slot extended centrally out by bottom plate is offered on three sides of bottom plate, sliding is provided with support plate in sliding slot, and bottom plate is stretched out in one end of support plate, and the locking assembly of one group of limitation support plate sliding is equipped on the bottom plate of support plate opposite sides；One end that support plate stretches out bottom plate is equipped with screw thread supporting leg vertically, and screw thread supporting leg is connect with support plate thread.The utility model is horizontally arranged bottom plate by slidable support plate and the realization of adjustable screw thread supporting leg, to can be placed on foot pin vertically with levelling rod.
Description
Technical field
The utility model relates to the technical fields of engineering survey, more particularly, to a kind of levelling rod foot pin.
Background technique
Existing levelling rod, mainly include the following types: 1, measurement accuracy demanding four etc. is to used in primary levelling
3 meters of levelling rods；2, the stretchable tower levelling rod of general measure required precision；3, the hinge of general measure required precision connects
The folding levelling rod connect.Conventional leveling work is mainly completed by level and levelling rod, and levelling rod is when in use
It is usually matched with foot pin, foot pin is mainly used for placing levelling rod in turning point, usually triangular structure is cast by the pig iron, in top
Centre is provided with the hemisphere of protrusion, and there are three stabilizer blade, three stabilizer blades are securely inserted into soil bottom tool by when measurement, with anti-sinking,
The hemispherical vertex of top protrusion is for erectting levelling rod and as mark turning point.When measurement, survey crew needs hand steered levelling rod,
Stand on levelling rod stabilization on the hemispherical vertex of foot pin.
Patent publication No. is that the patent of CN208579763U discloses a kind of levelling rod foot pin, is used for field of measuring technique,
Including foot pin pedestal, further includes the supporting leg set on foot pin base bottom, be rotatably equipped with turntable on foot pin pedestal, turntable is equipped with
For the installation card slot of levelling rod insertion.Levelling rod is mounted on foot pin by installation card slot, not easy glide, to improve measurement
Precision and measurement efficiency.
Above-mentioned technical proposal has following defect, and when foot pin is placed on broken terrain, foot pin is due to three branch
Foot height is identical and cannot keep horizontal well, is easy to make to be placed on the levelling rod run-off the straight on level shoe and even inclines
, measurement accuracy is influenced.
Utility model content
The purpose of the utility model is to provide a kind of levelling rod foot pins, and good water is kept under different terrain conditions
Level state enables levelling rod to stablize vertical placement, improves measurement accuracy.
The utility model has the technical scheme that
A kind of levelling rod foot pin offers on three sides of the bottom plate by described including the bottom plate in triangular shape
The sliding slot that bottom plate extends centrally out, the interior sliding of the sliding slot are provided with support plate, and described in one end stretching of the support plate
Bottom plate is equipped with the locking assembly of one group of limitation support plate sliding on the bottom plate of the support plate opposite sides；
One end that the support plate stretches out the bottom plate is equipped with screw thread supporting leg, the screw thread supporting leg and the support vertically
Plate is threadedly coupled.
By using above-mentioned technical proposal, sliding slot is opened up and the support plate that is slidably installed in bottom panel side, the installation of screw thread supporting leg
On the supporting plate, by sliding support plate in sliding slot, position of the screw thread supporting leg relative to bottom plate is adjusted, screw thread is facilitated
Supporting leg is found suitable supporting point and is supported to bottom plate, and bottom plate is more stable, is not easy to tilt.Screw thread supporting leg by with support plate spiral shell
Line connection can adjust screw thread supporting leg to the bearing height of bottom plate by rotation screw thread supporting leg, make bottom plate be placed on inclination or
When on broken terrain, adjustable to the different bearing height of three screw thread supporting legs, so that base slab stability be made to keep water
Level state, levelling rod are placed on the case where being not susceptible to inclination or even toppling over, improve measurement accuracy.
It is further arranged to, the locking assembly includes that check lock lever, locking spring and locking trunnion, the support plate are opposite
Two sides offer multiple locking holes along its length, and the locking trunnion is fixedly connected on support plate side bottom plate
On side, the check lock lever passes through the locking trunnion and one end is plugged in the locking hole, and the locking spring is set in
On the check lock lever, and locking spring both ends respectively with the described locking one end of trunnion and the check lock lever far from the support plate
It is fixedly connected.
By using above-mentioned technical proposal, survey crew releases check lock lever to branch by extracting check lock lever out locking hole
The limitation of fagging, support plate can be slided freely in sliding slot at this time, to adjust the position of screw thread supporting leg；Adjust screw thread branch
Behind the position of leg, check lock lever is unclamped, check lock lever is plugged in locking hole again under the elastic force effect of locking spring, to limit
The sliding of support plate is stablized screw thread supporting leg and is supported in a certain position to bottom plate, is conducive in measurement process
Stability.
Be further arranged to: the check lock lever is fixedly connected with ballhead far from one end of the support plate.
By using above-mentioned technical proposal, ballhead provides the point of application to survey crew, and survey crew can be more easily
Extract check lock lever out locking hole.
It is further arranged to, the screw thread supporting leg includes turning set and supporting leg, and the turning set is in cylindrical tube shape and interior
Side is equipped with internal screw thread, lateral surface is equipped with external screw thread, and the turning set is connect by external screw thread with the support plate thread, institute
It states supporting leg to be threadedly coupled by internal screw thread with the turning set, and the internal screw thread screw pitch of the turning set is greater than external screw thread spiral shell
Away from.
By using above-mentioned technical proposal, turning set is connect by internal screw thread with support plate thread, rotary motion set
Move up and down turning set relative to bottom plate；The internal screw thread of supporting leg and turning set is threadedly engaged, and passes through rotational support leg
Move up and down supporting leg relative to turning set；Since the internal screw thread screw pitch of turning set is greater than external screw thread screw pitch, then can pass through
Rotational support leg realizes the adjusting by a relatively large margin to supporting leg bearing height, is realized by rotary motion set and supports height to supporting leg
The slight adjusting of degree, to keep adjusting more accurate, bottom plate is easier to be adjusted to horizontality, facilitates measurement.
It is further arranged to, the supporting leg bottom end is fixedly connected with support leg.
By using above-mentioned technical proposal, support leg increases the contact area on supporting leg and ground, enhances supporting leg
The supporting role of adherence properties, supporting leg is more stable.
It is further arranged to, the supporting leg top is fixedly connected with knob.
By using above-mentioned technical proposal, knob provides the point of application to survey crew, and when rotational support leg is more labor-saving.
It is further arranged to, the clamp assemblies for clamping levelling rod, the clamp assemblies packet is provided on the bottom plate
It includes grip slipper, two-way lead screw and two pieces of grip blocks, the grip slipper to be rotatably installed on the bottom plate, be opened up on the grip slipper
Have a holding tank for accommodating the two-way lead screw, the two-way lead screw be rotatably installed in the holding tank and with described in two pieces
The bottom thread of grip block connects, and the grip block is equipped with Buffer Unit.
By using above-mentioned technical proposal, levelling rod is placed between two pieces of grip blocks, two pieces of grip blocks and two-way lead screw
It is threadedly coupled, by rotating two-way lead screw, synchronizes two pieces of grip blocks and slide in opposition, to clamp levelling rod, levelling rod is not easy
It shakes, to improve measurement accuracy.Grip slipper is rotatably installed on bottom plate, and the personnel that are convenient for measuring rotate grip slipper to adjust
The direction of whole levelling rod, it is convenient that different direction is measured.
It is further arranged to, the Buffer Unit includes flexible board and multiple buffer springs, the flexible board and the folder
Hold plate to be arranged in parallel, and be located between two pieces of grip blocks, the buffer spring both ends respectively with the grip block and described
Flexible board is fixedly connected.
By using above-mentioned technical proposal, during clamping board clamping levelling rod, buffer spring presses flexible plate with
Levelling rod pushes against to clamp levelling rod, and levelling rod is not direct to be contacted with grip block, and levelling rod is not easy quilt during clamping
Abrasion, increases the service life of levelling rod.
It is further arranged to, described two-way lead screw one end is fixedly connected with handle.
By using above-mentioned technical proposal, handle provides the point of application for rotating two-way lead screw to survey crew, measures people
Member rotates two-way lead screw more easily by handle to clamp levelling rod.
It is further arranged to, the bubble box for detecting floor level is provided on the bottom plate.
By using above-mentioned technical proposal, the bubble box personnel of being convenient for measuring judge whether bottom plate is in horizontality, more directly
The heeling condition of the reflection bottom plate of sight, to improve the efficiency and accuracy of adjustment bottom plate.
In conclusion the advantageous effects of the utility model are as follows:
1. support plate is slidably mounted on the sliding slot of bottom plate, screw thread supporting leg is installed on the supporting plate, passes through sliding support plate
It adjusts position of the screw thread supporting leg relative to bottom plate, and passes through the position of locking assembly lock support plate, make screw thread supporting leg and bottom
The relative distance of plate is adjustable；Screw thread supporting leg is connect with support plate thread, and rotation screw thread supporting leg can be to the bearing height of screw thread supporting leg
It is adjusted, is placed to be able to maintain floor level in inclination even broken terrain, levelling rod can be stablized vertically
Be placed on foot pin, reduce bottom plate place it is unstable and the phenomenon that tilt, improve measurement accuracy；
2. screw thread supporting leg is made of turning set and supporting leg, turning set is connect by external screw thread with base thread, is turned simultaneously
Dynamic set is threadedly coupled by internal screw thread with supporting leg, and external screw thread screw pitch is less than internal screw thread screw pitch, then rotational support leg can be real
The adjusting by a relatively large margin of existing supporting leg bearing height, by rotation turning set realize supporting leg bearing height height more by a small margin
It adjusts, coarse adjustment and accurate adjustment cooperation can be convenient survey crew and bottom plate are quickly adjusted to horizontality；
3. being rotatablely installed grip slipper on bottom plate, two-way lead screw, two-way lead screw and two pieces of clampings are rotatablely installed on grip slipper
Plate is threadedly coupled, and is made to clamp board clamping levelling rod by rotating two-way lead screw, is stably fixed to levelling rod on foot pin, is not easy
It shakes, and facilitates and adjust levelling rod direction, both improved measurement accuracy or water transfer object staff is facilitated to measure orientation.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the overall structure diagram of clamp assemblies in Fig. 1；
Fig. 3 is the diagrammatic cross-section of the line A-A along Fig. 2.
In figure, 1, bottom plate；2, sliding slot；3, support plate；4, screw thread supporting leg；5, check lock lever；6, locking spring；7, locking branch
Ear；8, locking hole；9, ballhead；10, turning set；11, supporting leg；12, support leg；13, knob；14, grip slipper；15, it clamps
Plate；16, two-way lead screw；17, holding tank；18, flexible board；19, buffer spring；20, handle；21, bubble box.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
Referring to Fig.1, it is a kind of levelling rod foot pin disclosed by the utility model, including bottom plate 1, is embedded with sight on the upside of bottom plate 1
Examine the whether horizontal bubble box 21 of bottom plate 1.1 three sides of bottom plate offer the sliding slot 2 extended centrally out by bottom plate 1, sliding
Sliding is provided with support plate 3 in slot 2, and bottom plate 1 is stretched out in one end of support plate 3, and the threaded one end of the stretching sliding slot 2 of support plate 3 is matched
Conjunction has vertical screw thread supporting leg 4, and one group is equipped on the bottom plate 1 of 3 opposite sides of support plate for limiting the lock of the sliding of support plate 3
Tight component.Position of the screw thread supporting leg 4 relative to bottom plate 1 is adjusted by sliding support plate 3, is then adjusted by rotation screw thread supporting leg 4
Screw thread supporting leg 4 is saved to the bearing height of bottom plate 1, alloing bottom plate 1, also holding is horizontal on broken terrain and stabilization is put
It sets, to more stably be supported to levelling rod, improves the measurement accuracy of levelling rod.
Referring to Fig.1, screw thread supporting leg 4 includes turning set 10 and supporting leg 11, and turning set 10 is cylindrical and medial surface is equipped with
Internal screw thread, lateral surface are equipped with external screw thread.Turning set 10 is threadedly coupled by external screw thread with support plate 3, and supporting leg 11 is worn vertically
On turning set 10, and turning set 10 is threadedly coupled by internal screw thread with supporting leg 11, and 11 bottom end of supporting leg is fixedly connected with branch
Support foot 12 is fixed with the knob 13 for facilitating rotation supporting leg 11 at the top of supporting leg 11.In order to the bearing height to supporting leg 11 into
Row is more accurate to be adjusted, and the external screw thread screw pitch of turning set 10 is less than the screw pitch of turning set internal screw thread, to pass through rotary motion set
10 are supported the fine adjustment of 11 bearing height of leg, and the larger of 11 bearing height of leg is supported by rotational support leg 11
Width is adjusted.
Referring to Fig.1, locking assembly includes check lock lever 5, locking spring 6 and locking trunnion 7, and 3 two sides of support plate are along its length
Direction offers multiple locking holes 8, and locking trunnion 7 is fixed on the side of 3 side bottom plate 1 of support plate, and 5 activity of check lock lever is worn
It inserts with locking trunnion 7 and one end is plugged in locking hole 8, check lock lever 5 is fixedly connected with ballhead 9 far from one end of support plate 3,
Locking spring 6 is set on check lock lever 5 and both ends are fixedly connected with locking trunnion 7 and ballhead 9 respectively.It needs to adjust support plate
When 3 extension elongation, check lock lever 5 is pulled out locking hole 8 and locked at this time so that support plate 3 can be slided in sliding slot 2 by survey crew
Spring 6 is stretched, and after having adjusted 3 position of support plate, unclamps check lock lever 5, drives 5 weight of check lock lever by the elastic force of locking spring 6
It is newly plugged into locking hole 8, to limit the sliding of support plate 3.
Referring to Figures 1 and 2, the clamp assemblies for clamping levelling rod are provided on bottom plate 1, clamp assemblies include grip slipper
14, two pieces of grip blocks 15 and two-way lead screw 16(are referring to Fig. 3), bottom plate is fixed with axis the bottom of perpendicular at 1 upper surface center
The bearing (not shown) of plate 1,14 bottom of grip slipper are fixedly connected with central axis, and grip slipper 14 is solid by central axis and bearing
Fixed connection is to be rotatably installed on bottom plate 1.Connection direction on grip slipper 14 along two pieces of grip blocks 15 offers holding tank 17,
Two pieces of grip blocks 15 are oppositely arranged and bottom is slidably mounted in holding tank 17.Two-way lead screw 16 is rotatably installed in holding tank 17
In, two sections of reverse threads of two-way lead screw 16 cooperate with the bottom thread of two pieces of grip blocks 15 respectively, one end of two-way lead screw 16
It stretches out grip slipper 14 and is fixedly connected with handle 20.
Referring to Figures 1 and 2, it is provided with Buffer Unit on the opposite side of two pieces of grip blocks 15, Buffer Unit includes soft
Property plate 18 and multiple buffer springs 19, flexible board 18 is arranged in parallel with grip block 15, flexible board 18 positioned at two pieces of grip blocks 15 it
Between, and 19 both ends of buffer spring are fixedly connected with grip block 15 and flexible board 18 respectively.Double end spiral shell is driven by rotational handle 20
Line column 16 rotates, so that it is relatively close to clamp levelling rod to synchronize grip block 15, levelling rod is clamped and fixed in grip slipper
On 14, is even tilted so that levelling rod is not susceptible to shake, improve measurement accuracy；And levelling rod can be as grip slipper 14 be the bottom of at
Rotation on plate 1 and rotate, be convenient for measuring the face direction that personnel adjust levelling rod.
It the implementation principle of the present embodiment and has the beneficial effect that
Bottom plate 1 is slidably installed three support plates 3 by sliding slot 2, and screw thread supporting leg 4 is mounted in support plate 3, passes through sliding branch
Fagging 3 adjusts position of the screw thread supporting leg 4 relative to bottom plate 1, then the sliding of support plate 3 is limited by locked component, then distinguishes
Different screw thread supporting legs 4 are rotated, three screw thread supporting legs is adjusted to the bearing height of bottom plate 1, is able to maintain bottom plate 1 in different terrain
It is horizontal；Levelling rod is clamped on grip slipper 14 by the clamp assemblies on bottom plate 1, to reduce its shaking phenomenon, to improve
Measurement accuracy.
The embodiment of present embodiment is the preferred embodiment of the utility model, and not limitation is originally practical new according to this
The protection scope of type, therefore: the equivalence changes that all structures, shape, principle according to the utility model are done should all be covered by practical
Within novel protection scope.
Claims (10)
1. a kind of levelling rod foot pin, which is characterized in that the bottom plate (1) including being in triangular shape, on three sides of the bottom plate (1)
The sliding slot (2) extended centrally out by the bottom plate (1) is offered, sliding is provided with support plate (3) in the sliding slot (2),
And the bottom plate (1) is stretched out in one end of the support plate (3), is all provided on the bottom plate (1) of support plate (3) opposite sides
The locking assembly for thering is one group of limitation support plate (3) to slide；
One end that the support plate (3) stretches out the bottom plate (1) is equipped with screw thread supporting leg (4) vertically, the screw thread supporting leg (4) with
The support plate (3) is threadedly coupled.
2. a kind of levelling rod foot pin according to claim 1, which is characterized in that the locking assembly include check lock lever (5),
Locking spring (6) and locking trunnion (7), support plate (3) opposite sides offer multiple locking holes along its length
(8), locking trunnion (7) is fixedly connected on the side of the support plate (3) side bottom plate (1), and the check lock lever (5) is worn
It crosses the locking trunnion (7) and one end is plugged in the locking hole (8), the locking spring (6) is set in the check lock lever
(5) on, and locking spring (6) both ends are respectively with the locking trunnion (7) and the check lock lever (5) far from the support plate (3)
One end be fixedly connected.
3. a kind of levelling rod foot pin according to claim 2, which is characterized in that the check lock lever (5) is far from the support
One end of plate (3) is fixedly connected with ballhead (9).
4. a kind of levelling rod foot pin according to claim 1, which is characterized in that the screw thread supporting leg (4) includes turning set
(10) and supporting leg (11), the turning set (10) are equipped with internal screw thread, lateral surface equipped with outer spiral shell in cylindrical tube shape and medial surface
Line, the turning set (10) are threadedly coupled by external screw thread with the support plate (3), and the supporting leg (11) passes through internal screw thread
It is threadedly coupled with the turning set (10), and the internal screw thread screw pitch of the turning set (10) is greater than external screw thread screw pitch.
5. a kind of levelling rod foot pin according to claim 4, which is characterized in that supporting leg (11) bottom end is fixedly connected
There are support leg (12).
6. a kind of levelling rod foot pin according to claim 4, which is characterized in that supporting leg (11) top is fixedly connected
There are knob (13).
7. a kind of levelling rod foot pin according to claim 1, which is characterized in that be provided on the bottom plate (1) for pressing from both sides
The clamp assemblies of water holding object staff, the clamp assemblies include grip slipper (14), two-way lead screw (16) and two pieces of grip blocks (15), institute
It states grip slipper (14) to be rotatably installed on the bottom plate (1), offer in the grip slipper (14) for accommodating the two-way silk
The holding tank (17) of thick stick (16), the two-way lead screw (16) be rotatably installed in the holding tank (17) and with two pieces of clampings
The bottom thread of plate (15) connects, and the grip block (15) is equipped with Buffer Unit.
8. a kind of levelling rod foot pin according to claim 7, which is characterized in that the Buffer Unit includes flexible board (18)
With multiple buffer springs (19), the flexible board (18) is arranged in parallel with the grip block (15), and is located at two pieces of clampings
Between plate (15), buffer spring (19) both ends are fixedly connected with the grip block (15) and the flexible board (18) respectively.
9. a kind of levelling rod foot pin according to claim 7, which is characterized in that described two-way lead screw (16) one end is fixed to be connected
It is connected to handle (20).
10. a kind of levelling rod foot pin according to claim 1, which is characterized in that be provided on the bottom plate (1) for examining
The bubble box (21) of bottom plate (1) level of survey.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920519417.7U CN209656036U (en) | 2019-04-16 | 2019-04-16 | A kind of levelling rod foot pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920519417.7U CN209656036U (en) | 2019-04-16 | 2019-04-16 | A kind of levelling rod foot pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209656036U true CN209656036U (en) | 2019-11-19 |
Family
ID=68529393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920519417.7U Expired - Fee Related CN209656036U (en) | 2019-04-16 | 2019-04-16 | A kind of levelling rod foot pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209656036U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111043493A (en) * | 2019-12-27 | 2020-04-21 | 湖南工艺美术职业学院 | Intelligence level gauge for indoor decoration |
| CN111578897A (en) * | 2020-05-14 | 2020-08-25 | 武汉华中科大土木工程检测中心 | Automatic horizontal scale holding device |
| CN112378845A (en) * | 2021-01-04 | 2021-02-19 | 中交国通公路工程技术有限公司 | Portable road surface coefficient of friction tester of being convenient for |
| CN112525669A (en) * | 2021-01-04 | 2021-03-19 | 中交国通公路工程技术有限公司 | Resiliometer with perpendicular auxiliary function |
-
2019
- 2019-04-16 CN CN201920519417.7U patent/CN209656036U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111043493A (en) * | 2019-12-27 | 2020-04-21 | 湖南工艺美术职业学院 | Intelligence level gauge for indoor decoration |
| CN111043493B (en) * | 2019-12-27 | 2022-01-18 | 杭州满屋家居科技有限公司 | Intelligence level gauge for indoor decoration |
| CN111578897A (en) * | 2020-05-14 | 2020-08-25 | 武汉华中科大土木工程检测中心 | Automatic horizontal scale holding device |
| CN112378845A (en) * | 2021-01-04 | 2021-02-19 | 中交国通公路工程技术有限公司 | Portable road surface coefficient of friction tester of being convenient for |
| CN112525669A (en) * | 2021-01-04 | 2021-03-19 | 中交国通公路工程技术有限公司 | Resiliometer with perpendicular auxiliary function |
| CN112525669B (en) * | 2021-01-04 | 2023-09-26 | 中交国通公路工程技术有限公司 | Resiliometer with perpendicular auxiliary function |
| CN112378845B (en) * | 2021-01-04 | 2023-09-26 | 中交国通公路工程技术有限公司 | Portable road surface friction coefficient tester of being convenient for |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191119 |