CN112284317A - Workpiece wall thickness measuring device for mechanical engineering - Google Patents
Workpiece wall thickness measuring device for mechanical engineering Download PDFInfo
- Publication number
- CN112284317A CN112284317A CN202011092317.4A CN202011092317A CN112284317A CN 112284317 A CN112284317 A CN 112284317A CN 202011092317 A CN202011092317 A CN 202011092317A CN 112284317 A CN112284317 A CN 112284317A
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- Prior art keywords
- measuring device
- shell
- wall thickness
- fixed
- placing plate
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- 238000011089 mechanical engineering Methods 0.000 title claims abstract description 18
- 238000004140 cleaning Methods 0.000 claims abstract description 8
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 9
- 238000005259 measurement Methods 0.000 abstract description 7
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/12—Brushes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a workpiece wall thickness measuring device for mechanical engineering, which comprises a shell, a measuring structure, a cleaning structure and an auxiliary structure, wherein a base is fixed at the bottom end of the shell; the measurement structure includes a placement plate. Through placing board and depression bar cooperation, the convenience detects the wall thickness of gasket, and need not fix the gasket at the measurement lid in-process, make the measurement process simple more laborsaving, convenience when having improved measuring device and using, clear up depression bar bottom and place the board surface through the brush, avoid the depression bar bottom and place the board top and have debris to influence measuring result, the comparatively inconvenient problem of current measuring device clearance when using has been solved, measuring device's practicality has been improved, the state of placing through the ball to the casing detects, avoid the casing to place the unhindered influence measuring result when measuring, the problem of current measuring device place to observe comparatively inconvenient at ordinary times has been solved, accuracy when having improved measuring device and measuring.
Description
Technical Field
The invention relates to a measuring device, in particular to a workpiece wall thickness measuring device for mechanical engineering.
Background
Work pieces such as backing plate need the wall thickness of accurate alignment to measure before using, avoid the backing plate thickness to carry out the installation of product, and current measuring device of avoiding is when measuring, all need fix the backing plate earlier, just can measure the backing plate, leads to backing plate measurement operation comparatively loaded down with trivial details, the convenience when having reduced measuring device's use.
Many measuring device need guarantee to place and keep totally on the board when measuring, and because do not set up clearance structure on the current measuring device, lead to placing the board and clear up comparatively inconveniently after using, reduced measuring device's practicality, and many measuring device when placing, may influence measuring result because self places unevenly, and current measuring device is inside not to set up auxiliary structure, lead to measuring device's the state of placing to observe comparatively inconvenient. Therefore, a workpiece wall thickness measuring device for mechanical engineering is proposed to solve the above problems.
Disclosure of Invention
A workpiece wall thickness measuring device for mechanical engineering comprises a shell, a measuring structure, a cleaning structure and an auxiliary structure, wherein a base is fixed at the bottom end of the shell;
the measuring structure comprises a placing plate, an operating platform is fixed in the shell, the top end of the interior of the operating platform is provided with the placing plate, first springs are symmetrically fixed between the bottom end of the placing plate and the bottom end of the interior of the operating platform, first sliding blocks are fixed at two side ends of the placing plate, first sliding grooves matched with the first sliding blocks are formed in the interior of the operating platform, a moving rod is fixed at the front side of the placing plate, a moving groove matched with the moving rod is formed in the front side of the operating platform, a pressing rod penetrates through the shell above the placing plate, a second spring is sleeved on the pressing rod in the shell, and the upper end and the lower end of the second spring are fixed on the shell and the pressing rod respectively;
the cleaning structure comprises a hairbrush, a support rod is arranged above the side edge of the operating platform, hairbrushes are fixed at the upper end and the lower end of the support rod, a second sliding block is fixed at the front end and the rear end of the hairbrush, a second sliding groove matched with the second sliding block is formed in the shell, and a pull block is fixed at one end of the hairbrush at the front side, which extends to the outer side of the shell;
the auxiliary structure comprises a ball, a placing groove is formed in the middle position of the front side of the base, the ball is arranged in the placing groove, moving blocks are arranged in the placing grooves on the two sides of the ball, fourth springs are fixed between the outer sides of the moving blocks and the placing groove, and an observation groove is formed in the base on the front side of the ball.
Further, the top end of the placing plate and the top end of the operating platform are located on the same horizontal plane, and the height of the first spring is larger than that of the bottom end inside the operating platform, so that the height between the bottom ends of the placing plates is increased.
Furthermore, scale marks are coated on two sides of the moving groove, and the front side of the moving rod is transversely arranged in a T shape.
Further, the width of the bottom of the pressure lever is larger than that of the placing plate, and the pressure lever is in an I shape.
Furthermore, limiting rods are symmetrically fixed inside the shell above the pressing rod at the bottom, and rubber pads are glued to the bottom ends of the limiting rods.
Further, the height of the hairbrush is larger than the height between the supporting rod and the top end of the operating platform, and the width of the hairbrush is larger than the width of the placing plate.
Furthermore, a limiting block is arranged at the top end of one side of the second sliding groove in the front, and a third spring is fixed between the top end of the limiting block and the shell.
Further, the length of the second sliding groove is larger than that of the placing plate, and an arc-shaped groove matched with the bottom end of the limiting block is formed in the top end of the second sliding block in front.
Furthermore, rubber pads are glued on the inner sides of the moving blocks, and the height of the moving blocks is equal to the diameter height of the round balls.
Furthermore, mark lines are coated at the middle positions of the upper end and the lower end of the observation groove, the height of the observation groove is smaller than the diameter height of the round ball, and the width of the placing groove is larger than the diameter width of the round ball.
The invention has the beneficial effects that: the invention provides a workpiece wall thickness measuring device for mechanical engineering.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional front view of an embodiment of the present invention;
FIG. 3 is a schematic side sectional view of a portion of an embodiment of the present invention;
fig. 4 is an enlarged schematic view of a structure shown in fig. 3 according to an embodiment of the present invention.
In the figure: 1. the casing, 2, the base, 3, the operation panel, 4, place the board, 5, first spring, 6, first slider, 7, first spout, 8, the carriage release lever, 9, the shifting chute, 10, the depression bar, 11, the second spring, 12, the gag lever post, 13, the bracing piece, 14, the brush, 15, the second slider, 16, the second spout, 17, draw the piece, 18, the stopper, 19, the third spring, 20, the standing groove, 21, the ball, 22, the movable block, 23, the fourth spring, 24, the observation tank.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1-4, a workpiece wall thickness measuring device for mechanical engineering includes a housing 1, a measuring structure, a cleaning structure and an auxiliary structure, wherein a base 2 is fixed at the bottom end of the housing 1;
the measuring structure comprises a placing plate 4, an operating table 3 is fixed inside a shell 1, the top end inside the operating table 3 is provided with the placing plate 4, first springs 5 are symmetrically fixed between the bottom end of the placing plate 4 and the bottom end inside the operating table 3, two side ends of the placing plate 4 are both fixed with first sliders 6, first chutes 7 matched with the first sliders 6 are formed inside the operating table 3, a moving rod 8 is fixed on the front side of the placing plate 4, a moving groove 9 matched with the moving rod 8 is formed in the front side of the operating table 3, a pressure rod 10 penetrates through the shell 1 above the placing plate 4, a second spring 11 is sleeved on the pressure rod 10 inside the shell 1, and the upper end and the lower end of the second spring 11 are respectively fixed on the shell 1 and the pressure rod 10;
the cleaning structure comprises a hairbrush 14, a support rod 13 is arranged above the side edge of the operating platform 3, the upper end and the lower end of the support rod 13 are both fixed with the hairbrush 14, the front end and the rear end of the hairbrush 14 are fixed with a second sliding block 15, a second sliding groove 16 matched with the second sliding block 15 is formed in the shell 1, and a pull block 17 is fixed at one end of the front side hairbrush 14 extending to the outer side of the shell 1;
the auxiliary structure comprises a round ball 21, a placing groove 20 is formed in the middle of the front side of the base 2, the round ball 21 is arranged in the placing groove 20, moving blocks 22 are arranged in the placing grooves 20 on the two sides of the round ball 21, a fourth spring 23 is fixed between the outer side of each moving block 22 and the placing groove 20, and an observation groove 24 is formed in the base 2 on the front side of the round ball 21.
The top ends of the placing plates 4 and the top end of the operating platform 3 are positioned on the same horizontal plane, and the height of the first spring 5 is greater than that of the bottom end in the operating platform 3, so that the height between the bottom ends of the placing plates 4 is increased; scale marks are coated on both sides of the movable groove 9, and the front side of the movable rod 8 is transversely arranged in a T shape; the width of the bottom of the compression bar 10 is larger than that of the placing plate 4, and the compression bar 10 is I-shaped; a limiting rod 12 is symmetrically fixed in the shell 1 above the bottom pressure rod 10, and rubber pads are glued at the bottom end of the limiting rod 12; the height of the hairbrush 14 is larger than the height between the support rod 13 and the top end of the operating platform 3, and the width of the hairbrush 14 is larger than that of the placing plate 4; a limiting block 18 is arranged at the top end of one side of the front second sliding chute 16, and a third spring 19 is fixed between the top end of the limiting block 18 and the shell 1; the length of the second sliding chute 16 is greater than that of the placing plate 4, and the top end of the front second sliding block 15 is provided with an arc-shaped chute matched with the bottom end of the limiting block 18; rubber pads are glued on the inner sides of the moving blocks 22, and the height of the moving blocks 22 is equal to the diameter height of the round balls 21; the middle positions of the upper end and the lower end of the observation groove 24 are coated with identification lines, the height of the observation groove 24 is smaller than the diameter height of the round ball 21, and the width of the placing groove 20 is larger than the diameter width of the round ball 21.
When the invention is used and when the base plate needs to be detected, firstly, the base plate is placed on the placing plate 4 below the pressure lever 10, then the pressure lever 10 is pressed, the pressure lever 10 stretches the second spring 11 to move downwards to extrude the gasket, the placing plate 4 is extruded by the gasket to compress the first spring 5 to move downwards, meanwhile, the moving rod 8 is driven to move in the moving groove 9, when the pressure lever 10 moves to the top end of the placing plate 4, the pressure lever 10 stops moving downwards under the limit of the operating platform 3, the moving height of the moving rod 8 moving on the moving groove 9 is the thickness of the gasket, after the detection is finished, the pressure lever 10 is loosened, so that the pressure lever 10 is re-abutted against the limit rod 12 under the pull of the second spring 11, meanwhile, the placing plate 4 moves upwards to the top end of the operating platform 3 under the push of the first spring 5, the measurement can be carried out again, when the placing plate 4 needs to be cleaned, the second sliding block 15 is pulled through the pulling block 17, so that the side edge of the second sliding block 15 extrudes the limiting block 18, the limiting block 18 compresses the third spring 19 to move out of the inside of the second sliding block 15, the second sliding block 15 moves in the inside of the second sliding groove 16, the hairbrush 14 is driven to clean the placing plate 4 and the pressure lever 10, after cleaning is completed, the hairbrush 14 is moved to the side edge of the operating table 3, meanwhile, the limiting block 18 is abutted in the arc-shaped groove under the pushing of the third spring 19, the supporting rod 13 can be fixed in the shell 1 at the side edge of the operating table 3, before the shell 1 is used, whether the shell 1 is in a horizontal state is judged through the position of the round ball 21, when the round ball 21 is staggered with the identification line, the shell 1 is adjusted to the state that the round ball 21 is aligned with the identification line again, and when the round ball 21 is excessively inclined, the round ball 21 compresses the fourth spring 23 through the moving, namely, the reaction force generated by the deformation of the fourth spring 23 counteracts partial extrusion, so that the ball 21 can be protected in a buffering manner.
The invention has the advantages that:
1. the device is simple in structure and convenient to operate, the wall thickness of the gasket is convenient to detect by matching the placing plate 4 with the pressure rod 10, and the gasket is not required to be fixed in the cover measuring process, so that the measuring process is simpler and more labor-saving, and the convenience of the measuring device in use is improved;
2. the device has a reasonable structure, the bottom end of the compression bar 10 and the surface of the placing plate 4 are cleaned through the hairbrush 14, the situation that sundries at the bottom end of the compression bar 10 and the top end of the placing plate 4 influence a measuring result is avoided, the problem that the existing measuring device is inconvenient to clean when in use is solved, and the practicability of the measuring device is improved;
3. the invention has reasonable structure, detects the placing state of the shell 1 through the ball 21, avoids the influence on the measuring result caused by the fact that the shell 1 is not placed horizontally during measurement, solves the problem that the existing measuring device is inconvenient to observe when placed unevenly, and improves the accuracy of the measuring device during measurement.
It is well within the skill of those in the art to implement and protect the present invention without undue experimentation and without undue experimentation that the present invention is directed to software and process improvements.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a workpiece wall thickness measuring device for mechanical engineering which characterized in that: the device comprises a shell (1), a measuring structure, a cleaning structure and an auxiliary structure, wherein a base (2) is fixed at the bottom end of the shell (1);
the measuring structure comprises a placing plate (4), an operating table (3) is fixed in the shell (1), a placing plate (4) is arranged at the top end inside the operating platform (3), first springs (5) are symmetrically fixed between the bottom end of the placing plate (4) and the bottom end inside the operating platform (3), the two side ends of the placing plate (4) are both fixed with first sliding blocks (6), the operating platform (3) is internally provided with first sliding grooves (7) matched with the first sliding blocks (6), a moving rod (8) is fixed on the front side of the placing plate (4), a moving groove (9) matched with the moving rod (8) is arranged on the front side of the operating platform (3), a pressure lever (10) penetrates through the shell (1) above the placing plate (4), a second spring (11) is sleeved on the pressure lever (10) in the shell (1), the upper end and the lower end of the second spring (11) are respectively fixed on the shell (1) and the pressure lever (10);
the cleaning structure comprises a brush (14), a support rod (13) is arranged above the side edge of the operating platform (3), the upper end and the lower end of the support rod (13) are both fixed with the brush (14), the front end and the rear end of the brush (14) are fixed with a second slide block (15), a second sliding groove (16) matched with the second slide block (15) is formed in the shell (1), and a pull block (17) is fixed at one end of the brush (14) at the front side, which extends to the outer side of the shell (1);
the auxiliary structure comprises a round ball (21), a placing groove (20) is formed in the middle position of the front side of the base (2), the round ball (21) is arranged in the placing groove (20), moving blocks (22) are arranged in the placing grooves (20) on the two sides of the round ball (21), fourth springs (23) are fixed between the outer sides of the moving blocks (22) and the placing groove (20), and an observation groove (24) is formed in the base (2) on the front side of the round ball (21).
2. The workpiece wall thickness measuring device for mechanical engineering according to claim 1, wherein: the top end of the placing plate (4) and the top end of the operating platform (3) are located on the same horizontal plane, and the height of the first spring (5) is larger than the height between the bottom ends of the placing plate (4) caused by the bottom ends inside the operating platform (3).
3. The workpiece wall thickness measuring device for mechanical engineering according to claim 1, wherein: the scale marks are coated on two sides of the movable groove (9), and the front side of the movable rod (8) is transversely arranged in a T shape.
4. The workpiece wall thickness measuring device for mechanical engineering according to claim 1, wherein: the width of the bottom of the compression bar (10) is larger than that of the placing plate (4), and the compression bar (10) is I-shaped.
5. The workpiece wall thickness measuring device for mechanical engineering according to claim 1, wherein: limiting rods (12) are symmetrically fixed inside the shell (1) above the pressure rod (10) at the bottom, and rubber pads are glued at the bottom ends of the limiting rods (12).
6. The workpiece wall thickness measuring device for mechanical engineering according to claim 1, wherein: the height of the hairbrush (14) is larger than the height between the support rod (13) and the top end of the operating platform (3), and the width of the hairbrush (14) is larger than the width of the placing plate (4).
7. The workpiece wall thickness measuring device for mechanical engineering according to claim 1, wherein: a limiting block (18) is arranged at the top end of one side of the second sliding groove (16) in the front, and a third spring (19) is fixed between the top end of the limiting block (18) and the shell (1).
8. The device for measuring the wall thickness of the workpiece for mechanical engineering according to claim 7, wherein: the length of the second sliding groove (16) is larger than that of the placing plate (4), and an arc-shaped groove matched with the bottom end of the limiting block (18) is formed in the top end of the second sliding block (15) in front.
9. The workpiece wall thickness measuring device for mechanical engineering according to claim 1, wherein: rubber pads are glued on the inner sides of the moving blocks (22), and the height of the moving blocks (22) is equal to the diameter height of the round balls (21).
10. The workpiece wall thickness measuring device for mechanical engineering according to claim 1, wherein: the middle positions of the upper end and the lower end of the observation groove (24) are coated with identification lines, the height of the observation groove (24) is smaller than the diameter height of the round ball (21), and the width of the placing groove (20) is larger than the diameter width of the round ball (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011092317.4A CN112284317A (en) | 2020-10-13 | 2020-10-13 | Workpiece wall thickness measuring device for mechanical engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011092317.4A CN112284317A (en) | 2020-10-13 | 2020-10-13 | Workpiece wall thickness measuring device for mechanical engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112284317A true CN112284317A (en) | 2021-01-29 |
Family
ID=74496127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011092317.4A Withdrawn CN112284317A (en) | 2020-10-13 | 2020-10-13 | Workpiece wall thickness measuring device for mechanical engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112284317A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113503843A (en) * | 2021-06-01 | 2021-10-15 | 李晓珍 | Assembled steel construction building fire retardant coating thickness detects instrument |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02213712A (en) * | 1989-02-15 | 1990-08-24 | Koa Oil Co Ltd | Thickness measuring instrument |
| JP2002090136A (en) * | 2000-09-20 | 2002-03-27 | Yokohama Rubber Co Ltd:The | Method and device for inspecting thickness of unvulcanized rubber |
| CN106989713A (en) * | 2017-04-11 | 2017-07-28 | 吴剑辉 | A kind of brake clutch piece production thickness detection apparatus |
| CN208936928U (en) * | 2018-10-10 | 2019-06-04 | 南京哈昵特户外用品有限公司 | A kind of waterproof trousers thickness detection apparatus |
| CN210667336U (en) * | 2019-11-06 | 2020-06-02 | 杨世科 | Display device for political teaching |
| CN211200101U (en) * | 2019-10-18 | 2020-08-07 | 合肥正浩机械科技有限公司 | Bridge girder erection machine supporting leg for longitudinal slope girder erection |
-
2020
- 2020-10-13 CN CN202011092317.4A patent/CN112284317A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02213712A (en) * | 1989-02-15 | 1990-08-24 | Koa Oil Co Ltd | Thickness measuring instrument |
| JP2002090136A (en) * | 2000-09-20 | 2002-03-27 | Yokohama Rubber Co Ltd:The | Method and device for inspecting thickness of unvulcanized rubber |
| CN106989713A (en) * | 2017-04-11 | 2017-07-28 | 吴剑辉 | A kind of brake clutch piece production thickness detection apparatus |
| CN208936928U (en) * | 2018-10-10 | 2019-06-04 | 南京哈昵特户外用品有限公司 | A kind of waterproof trousers thickness detection apparatus |
| CN211200101U (en) * | 2019-10-18 | 2020-08-07 | 合肥正浩机械科技有限公司 | Bridge girder erection machine supporting leg for longitudinal slope girder erection |
| CN210667336U (en) * | 2019-11-06 | 2020-06-02 | 杨世科 | Display device for political teaching |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113503843A (en) * | 2021-06-01 | 2021-10-15 | 李晓珍 | Assembled steel construction building fire retardant coating thickness detects instrument |
| CN113503843B (en) * | 2021-06-01 | 2023-09-29 | 承德中天建设工程检测试验有限公司 | Assembled steel construction building fire prevention coating thickness detects instrument |
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Application publication date: 20210129 |