CN208999178U - It is a kind of to be easy to fixed cement mortar plain bumper - Google Patents
It is a kind of to be easy to fixed cement mortar plain bumper Download PDFInfo
- Publication number
- CN208999178U CN208999178U CN201821378163.3U CN201821378163U CN208999178U CN 208999178 U CN208999178 U CN 208999178U CN 201821378163 U CN201821378163 U CN 201821378163U CN 208999178 U CN208999178 U CN 208999178U
- Authority
- CN
- China
- Prior art keywords
- plain bumper
- fold
- line
- shaped gripper
- gripper jaw
- 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.)
- Active
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
It is easy to fixed cement mortar plain bumper the utility model discloses a kind of, its key points of the technical solution are that: including pedestal, it is set to the preceding support of pedestal one end, it is set to the rear support of the pedestal other end, the plain bumper that impact force can be generated with rear support is set on rear support, it is set to the die trial of plain bumper upper end, the rocker arm being connect with preceding vibration of supports, and it is set to the vibration device on rear support, multiple fold-line-shaped gripper jaws that fixed clamp die trial is used for plain bumper rotation connection are provided on plain bumper, it is set to the fixing axle of fold-line-shaped gripper jaw two sides, and it is fixedly connected on the extension spring of fold-line-shaped gripper jaw and plain bumper；Certain claming angle can be generated to die trial by fold-line-shaped gripper jaw, and is fixed claming angle using extension spring, and the horizontal motion of die trial and movement in vertical direction can be limited simultaneously, realize the fixation of die trial.
Description
Technical field
The utility model relates to concrete NDT equipment technical field, more specifically, it relates to which a kind of be easy to fixed
Cement mortar plain bumper.
Background technique
Cement mortar plain bumper is a kind of equipment suitable for cement strength testing sample making, when use by empty die trial and
Positioning sleeve is fixed on plain bumper, with a spoon appropriate by point two layers of the loading die trial of glue sand directly in agitated kettle, fills the
At one layer, the bed of material is moved flat after being put into glue sand, is then shaken 60 times, is reloaded into second layer glue sand, second layer glue sand is moved flat, then
Vibration 60 times, removes die trial after the completion, and sample is completed.Cement mortar carries out jolt ramming at cement briquette, to be conducive to cement
Glue sand is tested, and the quality of construction water mud is then improved, and is conducive to achieve the purpose that exquisite build and green building construction.
If the big die sleeve of jolt ramming amplitude overcomes the stiction between upper part and fixture above and below plain bumper longevity of service or die sleeve
The phenomenon that being then easy to happen past two Slideslip, after die sleeve deviates jolt ramming center, the cement briquette homogeneity that jolt ramming goes out is poor, shadow
Ring test effect.
The Chinese patent of Publication No. CN205691396U discloses a kind of plain bumper die sleeve position-limit mechanism, including vibration
Platform and to be connected to shaking platform for fixing the hold assembly of die sleeve, the hold assembly in the vertical direction include that rotation connects
It is connected to the rotation section of shaking platform, which is characterized in that the shaking platform is equipped with limited block, and limited block is located at the one of hold assembly
Side, the hold assembly are equipped with contradictory piece away from limited block side, are provided between the rotation section and contradictory piece for driving
The transmission parts of contradictory piece abutting die sleeve.
Contradictory piece is controlled by rotation transmission parts to push against die sleeve onto limited block, is made by hold assembly vertical
The fixation for carrying out horizontal direction while fixing die sleeve on direction to die sleeve together, reaches the effect for quickly comprehensively fixing die sleeve
Fruit；But in fixed die trial, need to clamp in the horizontal direction die trial first with limited block and contradictory piece, recycle clamping part
Part clamps die trial in vertical direction, operates more complex.
Utility model content
In view of the deficienciess of the prior art, being easy to fixed cement mortar the purpose of this utility model is to provide a kind of
Plain bumper has level clamping direction together with vertically clamping direction integration, is easy to use the effect of personnel's operation.
To achieve the above object, the utility model provides following technical solution:
It is a kind of to be easy to fixed cement mortar plain bumper, including pedestal, the preceding support for being set to described pedestal one end, setting
In the pedestal other end rear support, be set on the rear support and can generate the jolt ramming of impact force with the rear support
Platform, be set to the plain bumper upper end for place the die trial of test specimen, be fixedly connected with the plain bumper and with the preceding support
It vibrates the rocker arm of connection and is set to the vibration device vibrated up and down on the rear support for controlling the plain bumper, institute
State be provided on plain bumper multiple rotation connections with the plain bumper for die trial described in fixed clamp fold-line-shaped gripper jaw, set
It is placed in fold-line-shaped gripper jaw two sides and is located at fixing axle and the company of fixation of the fold-line-shaped gripper jaw position of broken line upper end
It is connected to the extension spring of the fold-line-shaped gripper jaw and plain bumper, described extension spring one end is rotationally connected with the fixing axle
On, the extension spring other end is rotationally connected on the table top of the plain bumper.
So set, test specimen is imported in die trial as requested, then die trial is put when carrying out the vibration test of cement mortar
It is placed on plain bumper, die trial is fixed on plain bumper using fixing and holding mechanism, finally start vibration device；Using solid
When determining clamping device, fold-line-shaped gripper jaw can be made to block die trial edge, and by drawing by rotating fold-line-shaped gripper jaw to die trial
It stretches spring firmly to fix fold-line-shaped gripper jaw, prevents fold-line-shaped gripper jaw from shaking.
Further setting: the plain bumper is provided in round, and the fold-line-shaped gripper jaw is located on the jolt ramming edge of table,
The quantity of the fold-line-shaped gripper jaw is greater than three, and the two adjacent fold-line-shaped gripper jaws are equidistant, and the die trial is set
It is set to the circle that diameter is less than plain bumper.
So set, plain bumper and die trial are arranged because vibration force can spread outward when plain bumper and rear support are hit
It is not in measurement dead angle for circle, the quantity of fold-line-shaped gripper jaw is greater than three convenient for die trial to be clamped, prevents die trial water
Translation is dynamic.
Further setting: fold-line-shaped gripper jaw direction plain bumper center is provided on one side for preventing skidding
Rubber antiskid layer, the surface of the rubber antiskid layer are horizontally arranged with the non-slip texture that multiple tracks increases frictional force.
So set, can generate a upward vibration force when plain bumper and rear support are hit to die trial, utilize rubber
Glue anti-slip layer can reduce the vibration force between die trial and fold-line-shaped gripper jaw, and non-slip texture can reinforce the anti-of rubber antiskid layer
Sliding effect.
Further setting: being provided with the first groove in the fixing axle, the both ends of the extension spring are provided with half
Circle shackle, the semicircular hook ring set for being set to the extension spring upper end are set on first groove and rotate with the fixing axle
Connection.
So set, extension spring can be limited in the turned position of fixing axle using the first groove, extension spring is prevented
It is detached from turned position after long-term use, it is ensured that the limit effect of extension spring.
Further setting: it is provided on the plain bumper in fold-line-shaped gripper jaw two sides described for being rotatablely connected
The fixed frame of extension spring lower end, the fixed mount setting are L shape, are provided with the second groove on the fixed frame, are set to
The semicircular hook ring set of the extension spring lower end is set on second groove and is rotatablely connected with the fixed frame.
So set, extension spring can be rotationally connected on plain bumper using fixed frame, using being set to fixed frame
On the second groove can play turned position of the limitation extension spring on fixed frame, avoid extension spring sliding on fixed frame
It is dynamic；When extension spring generates abrasion, the fixed effect of fold-line-shaped gripper jaw can be ensured by replacement extension spring.
Further setting: being arranged in a one-to-one correspondence the body cradle hinged with the fold-line-shaped gripper jaw on the plain bumper,
The lower end of the fold-line-shaped gripper jaw is provided with the rotary shaft with body cradle rotation connection.
So set, rotational motion of the fold-line-shaped gripper jaw on plain bumper may be implemented by body cradle and rotary shaft,
It is daily without using fixing and holding mechanism when, fold-line-shaped gripper jaw can be turned to the position far from plain bumper center, made
Used time, then fold-line-shaped gripper jaw is turned into plain bumper center position, so that fold-line-shaped gripper jaw is handled die trial fixing clamp.
Further setting: the center of the plain bumper upper end is provided with limit hole, the center of the lower end of the die trial
Position is provided with the limited block being plugged in the limit hole with plain bumper clamping.
So set, being fast and accurately placed on plain bumper center convenient for die trial, it is ensured that fold-line-shaped gripper jaw is consolidated
Determine clamping effect.
Further setting: the limiting slot in upside down t-shape, the preceding support and the rear support are provided on the pedestal
Lower end be provided with sliding and be connected to the sliding shoe of the limiting slot, the rocker arm includes being rotationally connected with turning for the preceding support
Moving axis and the rocking bar for being plugged in the rotation axis both ends, the rocking bar are bolted to connection in the rotation axis.
So set, utilizing the adjustable preceding support of rocking bar and rear support of limiting slot and adjustable real work length
Between position, change the jolt ramming effect of cement mortar, meet kinds of experiments requirement.
By using above-mentioned technical proposal, the utility model is compared compared with the prior art: can by fold-line-shaped gripper jaw
Certain claming angle is generated to die trial, and is fixed claming angle using extension spring, it can be simultaneously by the level side of die trial
It is limited to movement and movement in vertical direction, realizes the fixation of die trial；Ensure fold-line-shaped gripper jaw using rubber antiskid layer
Fixed effect prevents die trial from shaking；The orientation problem that die trial can be fast and accurately realized using limit hole and limited block, is not necessarily to
Debug the placement location of die trial；It can be realized a variety of different jolt rammings using the rocker arm and limiting slot of adjustable real work length
Effect meets more requirement of experiment.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of cement mortar plain bumper；
Fig. 2 is the front view of cement mortar plain bumper；
Fig. 3 is the structural schematic diagram of the plain bumper of cement mortar plain bumper；
Fig. 4 is the structural schematic diagram of the fixing and holding mechanism of cement mortar plain bumper.
In figure: 1, pedestal；11, limiting slot；2, preceding support；3, rear support；31, sliding shoe；4, rocker arm；41, rotation axis；
42, rocking bar；43, bolt；5, vibration device；6, plain bumper；61, limit hole；7, fixing and holding mechanism；71, fold-line-shaped gripper jaw；
711, rotary shaft；72, rubber antiskid layer；721, non-slip texture；73, body cradle；74, fixed frame；741, the second groove；75, solid
Dead axle；751, the first groove；76, extension spring；761, semicircle shackle；8, die trial；81, limited block.
Specific embodiment
It is described further referring to figs. 1 to Fig. 4 to fixed cement mortar plain bumper is easy to.
It is a kind of to be easy to fixed cement mortar plain bumper, as shown in Figure 1, including pedestal 1, being slidably connected to 1 one end of pedestal
Preceding support 2, be slidably connected to 1 other end of pedestal rear support 3, be set on rear support 3 for can be generated with rear support 3
The plain bumper 6 of impact force is set on rear support 3 for controlling the vibration device 5 of the up-down vibration of plain bumper 6, being placed in jolt ramming
Rocker arm 4, the Yi Jishe that 6 upper end of platform is used to place the die trial 8 of test specimen, is fixedly connected with plain bumper 6 and is rotatablely connected with rear support 3
It is placed on plain bumper 6 for 8 fixing and holding mechanism 7 of fixed clamp die trial.
Wherein, Rocker arm 4 includes the rotation axis 41 being rotatablely connected with rear support 3 and is plugged in 41 two sides of rotation axis and is used for
The rocking bar 42 of active length is adjusted, rocking bar 42 is fixedly connected in rotation axis 41 by bolt 43.
Referring to figs. 1 and 2, the lower end of preceding support 2 and rear support 3 is provided with sliding and is connected in limiting slot 11
Sliding shoe 31.
As shown in figure 3, plain bumper 6 is round setting, die trial 8 is set as the circle that diameter is less than plain bumper 6；Wherein, it shakes
The limit hole 61 accurately placed convenient for die trial 8 is offered on real platform 6, the bottom end of die trial 8 is provided with and 61 shape of limit hole
The limited block 81 of size, by by the limited block 81 of 8 lower end of die trial be plugged in limit hole 61 realize die trial 8 it is quick position with
And accurate placement.
In conjunction with shown in Fig. 3 and Fig. 4, in the present embodiment, fixing and holding mechanism 7 includes three and is rotationally connected on plain bumper 6
Fold-line-shaped gripper jaw 71, and the distance between two adjacent fold-line-shaped gripper jaws 71 are fixed, are provided on plain bumper 6 and broken line
The body cradle 73 that shape gripper jaw 71 is rotatablely connected, fold-line-shaped gripper jaw 71 are plugged in body cradle by being set to position of broken line lower end
Rotary shaft 711 and body cradle 73 on 73 are rotatablely connected, and the position of broken line upper end of 71 two sides of fold-line-shaped gripper jaw is provided with solid
Dead axle 75 is provided with fixed frame 74 in 71 two sides of fold-line-shaped gripper jaw on turntable, turns on fixing axle 75 and fixed frame 74
The dynamic extension spring 76 connected for ensuring 71 clamping effect of fold-line-shaped gripper jaw.
Wherein, the side that fold-line-shaped gripper jaw 71 is directed toward 6 center of circle of plain bumper is provided with the rubber for preventing die trial 8 from sliding
Anti-slip layer 72, rubber antiskid layer 72 are set to the position of broken line upper end of fold-line-shaped gripper jaw 71, and the surface of rubber antiskid layer 72
It is provided with the non-slip texture 721 for reinforcing antiskid effect；Fixed frame 74 be set as L walking, the vertical portion of fixed frame 74 with
Plain bumper 6 is fixedly connected, and the horizontal component of fixed frame 74 is directed toward body cradle 73 and is arranged, and the both ends of extension spring 76 are provided with use
In the semicircle shackle 761 being rotatablely connected with fixing axle 75 and fixed frame 74, divide in the parallel section of fixing axle 75 and fixed frame 74
It is not provided with the first groove 751 and the second groove 741 for the clamping of semicircle shackle 761 for preventing extension spring 76 from sliding.
Working principle: when carrying out cement mortar jolt ramming experiment, first test specimen should be placed in die trial 8, then die trial 8 is put
It is placed on plain bumper 6, and die trial 8 is firmly fixed on plain bumper 6 using fixing and holding mechanism 7, die trial 8 when preventing from vibrating
It slides, finally starts vibrating mechanism, vibrate plain bumper 6, and plain bumper 6 and rear support 3 is made to occur to hit generation
The vibration force of biggish vibration force, generation can be transmitted in die trial 8 by plain bumper 6, so that the test specimen vibration being placed in die trial 8
It is real.
When placing die trial 8, the limited block 81 for being set to 8 lower end of die trial should be fixed the limit hole being set on plain bumper 6
61 place, and die trial 8 can be fast and accurately placed in the center location of plain bumper 6 in this way.
When using fixing and holding mechanism 7, fold-line-shaped gripper jaw 71 should be stirred and rotated to 6 center of circle direction of plain bumper, make to be arranged
It is abutted in the rubber antiskid layer 72 on fold-line-shaped gripper jaw 71 with die trial 8, when fold-line-shaped gripper jaw 71 is abutted with die trial 8, if
Be placed in 71 two sides of fold-line-shaped gripper jaw extension spring 76 can broken line shape gripper jaw 71 upper end position generate one perpendicular to
The chucking power in 74 direction of fixed frame, chucking power the abutment of fold-line-shaped gripper jaw 71 and die trial 8 can resolve into a direction to
Under chucking power for preventing die trial 8 from vibrating up and down and direction be directed toward what center location was used to prevent die trial 8 or so from sliding
Equilibrant force.
After the test, it is carried out by stirring the direction opposite with 6 center location of plain bumper of fold-line-shaped gripper jaw 71 again
Rotation, i.e., the fixation of accessible die trial 8.
Meanwhile by the limiting slot 11 being set on pedestal 1 and being set to preceding support 2 and 3 lower end of rear support and limit
Adjustable preceding support 2 of sliding shoe 31 and the distance between rear support 3 that slot 11 cooperates, can be with using rotation axis 41 and bolt 43
Adjust the real work length of Rocker arm 4.
Semicircle shackle 761 is set at the both ends of extension spring 76 and is served a meal the not be arranged in fixed frame 74 and fixing axle 75
One groove 751 and the second groove 741 are convenient for the replacement of extension spring 76, can ensure fixing clamp by replacing extension spring 76
Hold the fixed clamp dynamics of mechanism 7, it is ensured that the stable holding of die trial 8.
The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to
Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to
Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and
Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (8)
1. a kind of be easy to fixed cement mortar plain bumper, it is characterised in that: including pedestal (1), be set to the pedestal (1) one
The preceding support (2) at end, the rear support (3) for being set to the pedestal (1) other end, be set on the rear support (3) can be with
The rear support (3) generates the plain bumper (6) of impact force, is set to the plain bumper (6) upper end for placing the die trial of test specimen
(8), it is fixedly connected with the plain bumper (6) and vibrates the rocker arm (4) of connection with the preceding support (2) and be set to described
For controlling the vibration device (5) of the plain bumper (6) up-down vibration on rear support (3), it is provided on the plain bumper (6) more
A rotation connection with the plain bumper (6) for die trial (8) described in fixed clamp fold-line-shaped gripper jaw (71), be set to it is described
Fold-line-shaped gripper jaw (71) two sides and the fixing axle (75) positioned at fold-line-shaped gripper jaw (71) the position of broken line upper end, Yi Jigu
Surely it is connected to the extension spring (76) of the fold-line-shaped gripper jaw (71) and plain bumper (6), described extension spring (76) one end turns
Dynamic to be connected on the fixing axle (75), extension spring (76) other end is rotationally connected with the table top of the plain bumper (6)
On.
2. a kind of it is easy to fixed cement mortar plain bumper according to claim 1, it is characterised in that: the plain bumper
(6) it is provided in round, the fold-line-shaped gripper jaw (71) is located on the plain bumper (6) edge, the fold-line-shaped gripper jaw
(71) quantity is greater than three, and the two adjacent fold-line-shaped gripper jaws (71) are equidistant, and the die trial (8) is set as straight
Diameter is less than the circle of plain bumper (6).
3. a kind of it is easy to fixed cement mortar plain bumper according to claim 1, it is characterised in that: the broken line clevis
Hold the rubber antiskid layer (72) being provided on one side for preventing from skidding that pawl (71) are directed toward plain bumper (6) center, the rubber
The surface of anti-slip layer (72) is horizontally arranged with the non-slip texture (721) that multiple tracks increases frictional force.
4. a kind of it is easy to fixed cement mortar plain bumper according to claim 1, it is characterised in that: the fixing axle
(75) it is provided on the first groove (751), the both ends of the extension spring (76) are provided with semicircle shackle (761), setting
Semicircle shackle (761) in the extension spring (76) upper end be sheathed on first groove (751) and with the fixing axle
(75) it is rotatablely connected.
5. a kind of it is easy to fixed cement mortar plain bumper according to claim 4, it is characterised in that: the plain bumper
(6) fixation for being rotatablely connected the extension spring (76) lower end is provided in fold-line-shaped gripper jaw (71) two sides on
Frame (74), the fixed frame (74) are set as L shape, are provided with the second groove (741) on the fixed frame (74), are set to institute
The semicircle shackle (761) for stating extension spring (76) lower end is sheathed on second groove (741) to be turned with the fixed frame (74)
Dynamic connection.
6. a kind of it is easy to fixed cement mortar plain bumper according to claim 1, it is characterised in that: the plain bumper
(6) body cradle (73) hinged with the fold-line-shaped gripper jaw (71), the fold-line-shaped gripper jaw are arranged in a one-to-one correspondence on
(71) lower end is provided with the rotary shaft (711) with the body cradle (73) rotation connection.
7. a kind of it is easy to fixed cement mortar plain bumper according to claim 1, it is characterised in that: the plain bumper
(6) center of upper end is provided with limit hole (61), the center of the lower end of the die trial (8) be provided be plugged in it is described
The limited block (81) being clamped in limit hole (61) with the plain bumper (6).
8. a kind of it is easy to fixed cement mortar plain bumper according to claim 1, it is characterised in that: the pedestal (1)
On be provided with limiting slot (11) in upside down t-shape, the lower end of the preceding support (2) and the rear support (3) is provided with sliding
It is connected to the sliding shoe (31) of the limiting slot (11), the rocker arm (4) includes the rotation for being rotationally connected with the preceding support (2)
Axis (41) and the rocking bar (42) for being plugged in the rotation axis (41) both ends, the rocking bar (42) connect by the way that bolt (43) are fixed
It is connected on the rotation axis (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821378163.3U CN208999178U (en) | 2018-08-24 | 2018-08-24 | It is a kind of to be easy to fixed cement mortar plain bumper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821378163.3U CN208999178U (en) | 2018-08-24 | 2018-08-24 | It is a kind of to be easy to fixed cement mortar plain bumper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208999178U true CN208999178U (en) | 2019-06-18 |
Family
ID=66799646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821378163.3U Active CN208999178U (en) | 2018-08-24 | 2018-08-24 | It is a kind of to be easy to fixed cement mortar plain bumper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208999178U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111829848A (en) * | 2020-07-22 | 2020-10-27 | 江苏建纬检测股份有限公司 | Plain bumper prepared from test piece for cement mortar strength detection and test piece preparation method |
-
2018
- 2018-08-24 CN CN201821378163.3U patent/CN208999178U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111829848A (en) * | 2020-07-22 | 2020-10-27 | 江苏建纬检测股份有限公司 | Plain bumper prepared from test piece for cement mortar strength detection and test piece preparation method |
| CN111829848B (en) * | 2020-07-22 | 2024-04-12 | 江苏建纬检验检测有限公司 | Compaction table for preparing test piece for cement mortar strength detection and test piece preparation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208999178U (en) | It is a kind of to be easy to fixed cement mortar plain bumper | |
| CN208854667U (en) | A kind of industrial robot connection pedestal being conveniently adjusted angle | |
| CN203109845U (en) | Clamping device for facilitating assembly and disassembly | |
| CN210306865U (en) | A rotary fixture for processing of anchor cup end face hole | |
| CN208968893U (en) | A kind of cement mortar plain bumper | |
| CN209372515U (en) | Cement mortar jolt ramming instrument | |
| CN207366302U (en) | A kind of cement mortar plain bumper | |
| CN211846401U (en) | Barreled coating dumping device | |
| JP2571040Y2 (en) | Particle size analyzer for solid samples | |
| CN210233393U (en) | Vibrating table with magnetic base reinforcing function | |
| CN207971767U (en) | A kind of major diameter pipe endoporus sharpening machine Special clamping device | |
| CN210662113U (en) | Diesel generating set installation device convenient to adjust | |
| CN208928077U (en) | A kind of fixed base of coating agitator | |
| CN208772094U (en) | Wipe the bistrique of screen | |
| CN207730513U (en) | A kind of cement mortar plain bumper | |
| CN205317551U (en) | Cement mortar swing table | |
| CN208067667U (en) | A kind of three-way pipeline jig | |
| CN207712968U (en) | A kind of combined type multiple degrees of freedom glass feeding auxiliary device | |
| CN207431678U (en) | A kind of waterproof connector assembling device | |
| CN209831393U (en) | A quick dispersion devices for coating | |
| CN207745764U (en) | A kind of mixing machine of Intelligent fixed time stirring homogeneous | |
| CN205888413U (en) | Pneumatic spin welding frock | |
| CN212748518U (en) | Material clamping device for hardness stretching experiment in material scientific research | |
| CN214034809U (en) | Concrete vibrating platform | |
| CN210063037U (en) | Material transfer car (buggy) for civil engineering |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |