CN106153438B - A kind of composite steel band experimental rig - Google Patents
A kind of composite steel band experimental rig Download PDFInfo
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- CN106153438B CN106153438B CN201610608263.XA CN201610608263A CN106153438B CN 106153438 B CN106153438 B CN 106153438B CN 201610608263 A CN201610608263 A CN 201610608263A CN 106153438 B CN106153438 B CN 106153438B
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- test stand
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/14—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by dead weight, e.g. pendulum; generated by springs tension
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/0282—Two dimensional, e.g. tapes, webs, sheets, strips, disks or membranes
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention discloses a kind of composite steel band experimental rig, the weights including test stand, the guiding block assembly for placing composite steel band to be measured, multiple guide layerings, turnover bracket and weight-adjustable；Guiding block assembly is located at the upper surface of test stand, and multiple guide layerings are fixed at the edge of test stand upper surface, and multiple guide layerings guidance are oriented to block assemblies and slide laterally or oblique sliding in the upper surface of test stand；Bracket is located at the side of test stand, and bracket is fixed with sharp instrument；When bracket is overturn to guiding block assembly, sharp instrument is located at below bracket and weights are placed on bracket.Of the invention is vdiverse in function, can composite steel band is by various situations such as rupture strength variations after the damage of sharp mechanical part in simulant elevator installation, maintenance or operational process well, to be effectively tested the ability that composite steel band bears such unexpected injury.
Description
Technical field
The invention belongs to elevator technology fields, and in particular to a kind of composite steel band experimental rig.
Background technique
It is all that traction is driven by wirerope that traditional elevator is most of, still, is built in recent years to saving space and section
Can requirement step up, and due to polyurethane package composite steel band have the characteristics that frictional force is big, can make traction sheave and
Traction machine reduces, and can mitigate the weight of carriage and counterweight, so as to greatly economize on resources and space, therefore,
In elevator manufacture and installation, a kind of trend is developing progressively using the composite steel band substitution wirerope of polyurethane package.
But it in order to promote the use of composite steel band new technology, needs to carry out destructive testing to it, simulation test is by point
The variation of composite steel band after the damage of sharp mechanical part, i.e. test verification composite steel band are to bearing this in installation, maintenance, operational process
The ability of class unexpected injury.And for the elevator using composite steel band, it is guided to manufacture currently without corresponding standard criterion,
Test and installation.For this reason, it may be necessary to a kind of composite steel band experimental rig be designed, so that test is effectively performed.
Summary of the invention
In order to overcome the above technical defects, the present invention provides a kind of composite steel band experimental rigs, vdiverse in function, can be with
Well in simulant elevator installation, maintenance or operational process composite steel band by the rupture strength after the damage of sharp mechanical part
The operating conditions such as variation, to test the ability that composite steel band bears such unexpected injury.
To solve the above-mentioned problems, the present invention is achieved by following technical scheme:
A kind of composite steel band experimental rig, it is characterised in that:
Including test stand, the guiding block assembly for placing composite steel band to be measured, multiple guide layerings, turnover bracket, with
And the weights of weight-adjustable；
The guiding block assembly is located at the upper surface of the test stand, and multiple guide layerings are fixed at described
The edge of test stand upper surface, multiple guide layerings guide the guiding block assembly horizontal in the upper surface of the test stand
To sliding or oblique sliding；
The bracket is located at the side of the test stand, and the bracket is fixed with sharp instrument；
When the bracket is overturn to the guiding block assembly, the sharp instrument is located at below the bracket and described
Weights are placed on the bracket.
Further, multiple guide layerings guide the guiding block assembly laterally sliding in the upper surface of the test stand
Dynamic specific structure are as follows:
Including being two rectangle guide layerings, two rectangle guide layerings are separately fixed at described the guide layering
Two edges of the longitudinal direction of test stand upper surface；
The guiding block assembly is between two rectangle guide layerings.
Further, the guiding block assembly includes the first bottom plate and the first press strip, and the quantity of first press strip is
Four；First bottom plate is placed on the upper surface of the test stand, and four first press strips are fixedly pressed in described first
On bottom plate and construct out parallel cross type groove.
Further, multiple guide layerings guide the guiding block assembly in the oblique cunning in the upper surface of the test stand
Dynamic specific structure are as follows:
The guide layering includes two triangle guide layerings to be diagonally arranged, two triangle guide layerings
It is separately fixed at two edges of the longitudinal direction of the test stand upper surface；
The guiding block assembly is between two triangle guide layerings.
Further, the guiding block assembly includes the second bottom plate and the second press strip, and the quantity of second press strip is
Four；Second bottom plate is placed on the upper surface of the test stand, and four second press strips are fixedly pressed in described second
On bottom plate and construct out parallel Saint Andrew's cross type groove.
Further, the sharp portion of the sharp instrument is the minus screw cutter head that can be rotated with 360 °.
Further, the overturning structure of the bracket are as follows:
The side of the test stand is equipped with bearing block, and the bracket is equipped with bearing fulcrum；The bearing block and the axis
Fulcrum mating connection is held, the bracket is flipped outward to lead far from the test stand or inside overturning to described
Above to block assembly.
Further, the bracket is additionally provided with adjusting bolt, is configured with fastening nut, the test on the adjusting bolt
Curved plate is fixed on frame, the curved plate is equipped with the threaded hole with the adjusting bolt cooperation；The bracket overturn to
When above the guiding block assembly, the adjusting bolt is located at below the bracket and cooperates with the threaded hole, described in turn
Bolt is adjusted to be finely adjusted the sharp instrument in the vertical direction.
Further, the experimental rig further includes having support leg for adjusting the test stand height and being used for
The guiding block assembly is driven to slide laterally or the force handle of oblique sliding；The support leg be set to the test stand just under
Side, the fixed side for being located at the guiding block assembly of the force handle.
Further, the experimental rig further includes having to slide laterally or oblique sliding for limiting the guiding block assembly
Limited block, the limited block is located at the edge of the test stand upper surface and between multiple guide layering, institute
Limited block is stated to be oppositely arranged with the bracket.
Compared with prior art, the beneficial effects of the present invention are:
A kind of composite steel band experimental rig provided by the invention, it is vdiverse in function, can composite steel band different location not
, full bandwidth oblique 45 ° and longitudinal sliding motion scuffing lateral with insert depth progress full bandwidth, it can simulant elevator is pacified well
The various change situation of its rupture strength after composite steel band is damaged by sharp mechanical part in dress, maintenance or operational process,
To test the ability that composite steel band bears such unexpected injury.Composite steel band experimental rig of the present invention has design new
It is clever rationally, structure is simple, manufacturing cost is low, it is easily operated use, that test efficiency is high and ensures operator's safety etc. is many
Advantage.
Detailed description of the invention
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing, in which:
Fig. 1 is a kind of structural representation of composite steel band experimental rig described in the embodiment of the present invention 1 (or embodiment 2)
Figure；
Fig. 2 is a kind of structural schematic diagram of composite steel band experimental rig described in the embodiment of the present invention 3；
Fig. 3 is of the invention for showing that bracket is located at the partial enlarged view for the state being oriented to above block assembly；
Fig. 4 is that the effect that sharp instrument carries out full bandwidth transverse scratch to composite steel band in the embodiment of the present invention 1 is illustrated
Figure；
Fig. 5 is the effect schematic diagram that sharp instrument longitudinally scratches composite steel band in the embodiment of the present invention 2；
Fig. 6 is that the effect that sharp instrument carries out the oblique 45 ° of scuffings of full bandwidth to composite steel band in the embodiment of the present invention 3 is shown
It is intended to.
Detailed description of the invention:
1, test stand；11, bearing block；12, curved plate；121, threaded hole；2, it is oriented to block assembly；21, the first bottom plate；22,
First press strip；23, parallel cross type groove；231, the first elongated slot；232, short slot；24, pressing plate；25, the second bottom plate；26, the second pressure
Item；27, parallel Saint Andrew's cross type groove；271, the second elongated slot；272, oblique short slot；3, guide layering；31, rectangle guide layering；32, three
Angular guide layering；4, bracket；41, bearing fulcrum；42, bolt is adjusted；43, fastening nut；5, weights；6, sharp device
Tool；7, support leg；8, exert a force handle；9, limited block；10, composite steel band.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Embodiment 1
Present embodiment discloses a kind of composite steel band experimental rigs, as shown in Figure 1,3, including test stand 1, place it is to be measured multiple
Close the weights 5 for being oriented to block assembly 2, multiple guide layerings 3, turnover bracket 4 and weight-adjustable of steel band 10, guide pad
Component 2 is located at the upper surface of test stand 1.According to actual condition, in the present invention, the weight of weights 5 is in 20kg~50kg
Interior adjusting.
Wherein, the multiple guidance of guide layering 3 guiding block assemblies 2 slide laterally in the upper surface of test stand 1, in the present embodiment
In, specific structure are as follows: guide layering 3 include be two rectangle guide layerings 31, two rectangle guide layerings 31 fix respectively
In two edges of the longitudinal direction of 1 upper surface of test stand；Block assembly 2 is oriented to be between two rectangle guide layerings 31.
More specifically, guiding block assembly 2 includes the first bottom plate 21 and the first press strip 22, and the quantity of the first press strip 22 is four
It is a；First bottom plate 21 is placed on the upper surface of test stand 1, and four the first press strips 22 are fixedly pressed on the first bottom plate 21 and construct
Parallel cross type groove 23 out.In the present embodiment, the first press strip 22 is fixed on the mode on the first bottom plate 21 are as follows: by the first press strip
22 are arranged on the first bottom plate 21, then pressing plate 24 is arranged on the first press strip 22, by bolt arrangement from top to bottom by pressing plate
24, the first press strip 22 and 21 three of the first bottom plate link together, so that the first press strip 22 is fixedly pressed in the first bottom plate 21
On.Certainly, in the present invention, the first bottom plate 21 with the fixed structure of the first press strip 22 includes but is not limited to above-mentioned bolt connect
Structure, the two can also directly adopt the connection types such as welding to be interconnected and fixed with deteriorating, therefore, such as these the
The simple change for being connected and fixed structure between one bottom plate 21 and the first press strip 22 belongs to equivalent protection range of the invention.
Wherein, bracket 4 is located at the side of test stand 1, and bracket 4 is fixed with sharp instrument 6, in the present embodiment, sharply
The sharp portion of utensil 6 is selected as the minus screw cutter head that can be rotated with 360 °, so as to by the sharp portion of sharp instrument 6
Cut-out direction is adjusted to any direction, so that composite steel band experimental rig described in the present embodiment can be with analog composite steel band
The 10 various actual conditions damaged by extraneous sharp object.Specifically, in the present embodiment, sharp instrument 6 passes through screws clamp
Structure is able to be fixed on bracket 4.Certainly, in the present invention, sharp instrument 6 can also be fixed on support by other connection types
On seat 4, for example sharp instrument 6 (specially its non-pointed end) can be directly fixedly welded on bracket 4 with deteriorating etc., it is all
As such situation belongs to equivalent protection range of the invention.
As shown in figure 3, the overturning structure of bracket 4 specifically: the side of test stand 1 is equipped with bearing block 11, and bracket 4 is equipped with
Bearing fulcrum 41；Bearing block 11 and bearing fulcrum 41 are cooperatively connected, bracket 4 is flipped outward with far from test stand 1 or
Person inwardly overturns to 2 top of guiding block assembly.This overturning structure of bracket 4 designs, so that the installation of composite steel band to be measured 10 is extremely
Do not interfered during guiding block assembly 2, is conducive to improve test efficiency.
Wherein, bracket 4, which is additionally provided with, adjusts bolt 42, adjusts and is configured with fastening nut 43 on bolt 42, fixed on test stand 1
Equipped with curved plate 12, curved plate 12 is equipped with the threaded hole 121 cooperated with adjusting bolt 42；The overturning of bracket 4 extremely guiding block assembly 2
When top, adjusts bolt 42 and be located at 4 lower section of bracket and cooperate with threaded hole 121, and fastening nut 43 is set to bracket 4 and curved plate
Between 12, sharp instrument 6 can be finely adjusted in the vertical direction by adjusting bolt 42 by turn.It is set based on this structure
Meter, allow the experimental rig according to the thickness of different composite steel bands 10 to be measured it is inconsistent to sharp instrument 6 in vertical direction
On position be finely adjusted so that the experimental rig in terms of 10 thickness of composite steel band to be measured have stronger adaptability.
In the present embodiment, as shown in Figure 1, the experimental rig further includes the support leg having for adjusting 1 height of test stand
7 and for driving the force handle 8 that slides laterally of guiding block assembly 2；Support leg 7 is set to the underface of test stand 1, force
The fixed side for being located at guiding block assembly 2 of structure is bolted in handle 8, and certainly, force handle 8 can also pass through with deteriorating
The modes such as welding are fixed on the side of guiding block assembly 2.Due to the height of the adjustable test stand 1 of support leg 7, the test
Device is all suitable for the operator of each different heights.And the setting for the handle 8 that exerts a force, so that operator is to guiding block assembly 2
(including composite steel band 10 to be measured) is more laborsaving when exerting a force, and is conducive to improve test efficiency.
In the present embodiment, as shown in Figure 1, the experimental rig further includes has and slide laterally for restricted guidance block assembly 2
Limited block 9, the quantity of limited block 9 is two；Two limited blocks 9 are respectively positioned on the edge of 1 upper surface of test stand and are in
Between two rectangle guide layerings 31, two limited blocks 9 are oppositely arranged with bracket 4.Therefore, the setting of limited block 9 can be protected
Card guiding block assembly 2 can only be in 1 upper surface slide of test stand, to avoid guiding 2 stress of block assembly too quickly and be moved out of test
Frame 1, so to operator or other people cause to damage, effectively avoid the occurrence of unnecessary security risk.
In the present embodiment, as shown in Figure 1, the overturning of bracket 4 is to when being oriented to 2 top of block assembly, sharp instrument 6 is located at bracket
Below 4 and weights 5 are placed on bracket 4.According to inventor for a long time to compound in elevator installation, maintenance or operational process
The actual condition that steel band is damaged by sharp mechanical part carries out practical studies discovery, and sharp mechanical part is applied under each operating condition
The external force average value of composite steel band 10 is applied to the power of the composite steel band to be measured of the experimental rig the most with 25kg weights 5
It is close.Therefore, the weight of weights 5 is preferably 25kg by the present embodiment.
In the present embodiment, as shown in Figure 1, parallel cross type groove 23 includes orthogonal first elongated slot 231 and short
Slot 232, composite steel band 10 to be measured are placed in the first elongated slot 231.By the overturning of bracket 4 to 2 top of guiding block assembly, such as Fig. 4 institute
Show, " word " direction for adjusting sharp instrument 6 (specially straight screwdriver head) is parallel with the direction of short slot 232, observes and revolves
The dynamic bolt 42 that adjusts is concordant with the upper surface of composite steel band 10 to be measured with the bottom for adjusting sharp instrument 6, then mobile guide block
Component 2 makes the point of penetration of composite steel band 10 to be measured be in contact with sharp instrument 6 (specially straight screwdriver head), is then holding in the palm
25kg counterweight is placed on seat 4, grasps force handle 8 and is pulled so that guiding (including the composite steel band to be measured of block assembly 2
10) by sharp instrument 6 (specially straight screwdriver head), to realize the operating condition mould of 10 full bandwidth transverse scratch of composite steel band
It is quasi-.
Embodiment 2
Present embodiment discloses another composite steel band experimental rigs, completely the same in structure (as schemed with embodiment 1
1, shown in 3), details are not described herein.
It is as follows with the difference of embodiment 1 for composite steel band experimental rig described in the present embodiment:
In the present embodiment, composite steel band 10 to be measured is placed in the first elongated slot 231.As shown in Figure 1, bracket 4 is overturn
To 2 top of guiding block assembly.As shown in figure 5, mobile guide block assembly 2 (including composite steel band 10 to be measured) makes sharp instrument 6
Positioned at the centre of 10 width direction of composite steel band to be measured, " word " side of sharp instrument 6 (specially straight screwdriver head) is adjusted
To parallel with the direction of elongated slot 231, observe and turn adjusts bolt 42 so that sharp instrument 6 (specially straight screwdriver head)
It is contacted with the upper surface of composite steel band 10 to be measured, 25kg counterweight is then placed on bracket 4, it is directly longitudinal to extract clad steel to be measured out
The Work condition analogue that composite steel band 10 longitudinally scratches can be realized in band 10.
Embodiment 3
The present embodiment discloses a kind of composite steel band experimental rig again, as follows with the difference of embodiment 1:
As shown in Fig. 2, multiple guidance of guide layering 3 are oriented to block assemblies 2 in the oblique sliding in the upper surface of test stand 1, in reality
It applies in example, specific structure are as follows: guide layering 3 includes two triangle guide layerings 32 to be diagonally arranged, two triangles
Guide layering 32 is separately fixed at two edges of the longitudinal direction of 1 upper surface of test stand；It is oriented to block assembly 2 and is in two three
Between angular guide layering 32.
More specifically, guiding block assembly 2 includes the second bottom plate 25 and the second press strip 26, and the quantity of the second press strip 26 is four
It is a；Second bottom plate 25 is placed on the upper surface of test stand 1, and four the second press strips 26 are fixedly pressed on the second bottom plate 25 and construct
Parallel Saint Andrew's cross type groove 27 out.In the present embodiment, the second press strip 26 is fixed on the mode on the second bottom plate 25 are as follows: by the second pressure
Item 26 is arranged on the second bottom plate 25, then pressing plate 24 is arranged on the second press strip 26, from top to bottom will pressure by bolt arrangement
Plate 24, the second press strip 26 and 25 three of the second bottom plate link together, so that the second press strip 26 is fixedly pressed in the second bottom plate
On 25.Certainly, in the present invention, the fixed structure of the second bottom plate 25 and the second press strip 26 includes but is not limited to that above-mentioned bolt connects
Binding structure, the two can also directly adopt with deteriorating welding etc. connection types to be interconnected and fixed, therefore, such as these
The simple change for being connected and fixed structure between second bottom plate 25 and the second press strip 26 belongs to equivalent protection range of the invention.
In the present embodiment, as shown in Fig. 2, the experimental rig further includes has for the oblique sliding of restricted guidance block assembly 2
Limited block 9, the quantity of limited block 9 is two；Two limited blocks 9 are respectively positioned on the edge of 1 upper surface of test stand and are in
Between two triangle guide layerings 32, two limited blocks 9 are oppositely arranged with bracket 4.Limited block 9 is described in the present embodiment
Effect in composite steel band experimental rig with it is similar to Example 1, details are not described herein.
In the present embodiment, as shown in Fig. 2, parallel Saint Andrew's cross type groove 27 includes the second elongated slot 271 and oblique short slot 272,
Second elongated slot 271 and oblique short slot 272 angle between the two are 45 °, and composite steel band 10 to be measured is placed in the second elongated slot 271.
As shown in Fig. 2, by the overturning of bracket 4 to 2 top of guiding block assembly, then as shown in fig. 6, adjustment (the specially word spiral shell of sharp instrument 6
Silk cutter head) " word " direction it is parallel with the oblique direction of short slot 272, observe and turn adjusting bolt 42 be so that sharp instrument 6
Bottom is concordant with the upper surface of composite steel band 10 to be measured, then mobile guide block assembly 2 makes the point of penetration of composite steel band to be measured
It is in contact with sharp instrument 6 (specially straight screwdriver head), 25kg counterweight is then placed on bracket 4, grasps force
Handle 8 simultaneously pulls so that guiding block assembly 2 (including composite steel band 10 to be measured) passes through (the specially word screw of sharp instrument 6
Cutter head), to realize the Work condition analogue of the oblique 45 ° of scuffings of 10 overall with of composite steel band.
The other structures form and embodiment 1 of composite steel band experimental rig described in the present embodiment are completely the same, herein not
It repeats again.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, therefore
Without departing from the technical solutions of the present invention, according to the technical essence of the invention it is to the above embodiments it is any modification,
Equivalent variations and modification, all of which are still within the scope of the technical scheme of the invention.
Claims (7)
1. a kind of composite steel band experimental rig, it is characterised in that:
Guiding block assembly, multiple guide layerings, turnover bracket, Yi Jichong including test stand, placement composite steel band to be measured
Measure adjustable weights；
The guiding block assembly is located at the upper surface of the test stand, and multiple guide layerings are fixed at the test
The edge of frame upper surface, multiple guide layerings guide the guiding block assembly in the oblique cunning in the upper surface of the test stand
It is dynamic；
The guiding block assembly includes bottom plate and press strip, and the quantity of the press strip is four；The bottom plate is placed on the examination
The upper surface of frame is tested, four press strips are fixedly pressed on the bottom plate and construct out parallel Saint Andrew's cross type groove；
The bracket is located at the side of the test stand, and the bracket is fixed with sharp instrument；
When the bracket is overturn to the guiding block assembly, the sharp instrument is located at below the bracket and the counterweight
Counterweight is placed on the bracket.
2. composite steel band experimental rig according to claim 1, which is characterized in that described in multiple guide layering guidance
Block assembly is oriented in the specific structure of the oblique sliding in the upper surface of the test stand are as follows:
The guide layering includes two triangle guide layerings to be diagonally arranged, two triangle guide layering difference
It is fixed on two edges of the longitudinal direction of the test stand upper surface；
The guiding block assembly is between two triangle guide layerings.
3. described in any item composite steel band experimental rigs according to claim 1~2, it is characterised in that: the sharp instrument
Sharp portion is the minus screw cutter head for capableing of 360 ° of rotations.
4. described in any item composite steel band experimental rigs according to claim 1~2, which is characterized in that the overturning of the bracket
Structure are as follows:
The side of the test stand is equipped with bearing block, and the bracket is equipped with bearing fulcrum；The bearing block and the bearing branch
Axis is cooperatively connected, and the bracket is flipped outward with far from the test stand or inwardly overturning to the guide pad
Above component.
5. described in any item composite steel band experimental rigs according to claim 1~2, it is characterised in that: the bracket is additionally provided with
Bolt is adjusted, configured with fastening nut on the adjustings bolt, is fixed with curved plate on the test stand, on the curved plate
Equipped with the threaded hole with the adjusting bolt cooperation；When the bracket is overturn to the guiding block assembly, the adjusting spiral shell
Bolt is located at below the bracket and cooperates with the threaded hole, and adjusting bolt can be to the sharp instrument vertical described in turn
It is finely adjusted on direction.
6. described in any item composite steel band experimental rigs according to claim 1~2, it is characterised in that: the experimental rig is also
It include the support leg for adjusting the test stand height and the force for driving the guiding oblique sliding of block assembly
Handle；The support leg is set to the underface of the test stand, the fixed side for being located at the guiding block assembly of the force handle
Face.
7. composite steel band experimental rig according to claim 1, it is characterised in that: the experimental rig further includes being used for
The limited block of the guiding oblique sliding of block assembly is limited, the limited block is located at the edge of the test stand upper surface and position
Between multiple guide layerings, the limited block is oppositely arranged with the bracket.
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| CN107328644B (en) * | 2017-07-20 | 2024-03-26 | 广州广日电梯工业有限公司 | Composite material scratch test device |
| CN109781545A (en) * | 2019-01-23 | 2019-05-21 | 武汉船用机械有限责任公司 | A kind of stiffness test device |
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| CN205941168U (en) * | 2016-07-28 | 2017-02-08 | 广州广日电梯工业有限公司 | Compound steel band test device |
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| CN106153438A (en) | 2016-11-23 |
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