CN115369774A - T beam mold board straightness correction support that hangs down - Google Patents
T beam mold board straightness correction support that hangs down Download PDFInfo
- Publication number
- CN115369774A CN115369774A CN202211164327.3A CN202211164327A CN115369774A CN 115369774 A CN115369774 A CN 115369774A CN 202211164327 A CN202211164327 A CN 202211164327A CN 115369774 A CN115369774 A CN 115369774A
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- rod
- vertical
- fixedly connected
- upright
- rods
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/245—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing perpendicularity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/12—Instruments for setting out fixed angles, e.g. right angles
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The application relates to the technical field of bridge construction, particularly, relates to a T beam formwork perpendicularity correction support, and can solve to a certain extent and detect the lower problem of template perpendicularity efficiency and precision through plumb line and hanging hammer. The bracket includes: the upright stanchion is strip-shaped, and the side wall of the upright stanchion is a plane for limiting the side wall of the template; the cross rod is fixedly connected to the middle part of the upright post and is vertical to the length direction of the upright post; the lifting seat is fixedly connected to one end of the vertical rod, and the extending direction of the lifting seat is parallel to the length direction of the transverse rod; the lifting ring is fixedly connected to one side of the lifting seat, which is far away from the upright stanchion; wherein, the lifting seat includes counter weight portion and supporting part, the area of counter weight portion is greater than the area of supporting part, counter weight portion with supporting part fixed connection, rings are located counter weight portion with between the supporting part, the pole setting with supporting part fixed connection works as when the lifting seat suspends in midair, the pole setting is in vertical state.
Description
Technical Field
The application relates to the technical field of bridge construction, in particular to a T-beam template perpendicularity correction support.
Background
In the construction process of bridge buildings, a T-shaped beam, called T-shaped beam for short, is usually used, and the cross section of the T-shaped beam is similar to the shape of letter T, wherein the two sides of the T-shaped beam are selected to be flanges, and the middle part of the T-shaped beam is called a web. The concrete is formed by excavating the concrete in the tension area of the rectangular beam, which does not work in resisting bending strength, and the concrete is completely the same as the original rectangular bending strength, so that the concrete is saved, the self weight of the member is reduced, and the bridge spanning capability is improved.
At some T roof beams the fashioned in-process of pouring, need assemble the template that is used for pouring shaping T roof beam, template equipment is accomplished the back, need rectify the detection through plumb line cooperation sash weight to the straightness that hangs down of template, and in the testing process, the plumb line keeps vertical under the action of gravity of sash weight, adjusts well through the side of vertical plumb line to the template, rectifies the template with the slope after adjusting, and operating personnel still need carry out further straightness inspection that hangs down to the template after rectifying through plumb line and sash weight.
However, when checking the perpendicularity of the assembled template, a special person is required to monitor the position of the plumb line at any time, which affects the efficiency and accuracy of template correction.
Disclosure of Invention
In order to solve the problem that the detection of the perpendicularity efficiency and the precision of the template through the plumb line and the hanging hammer are lower, the application provides a T beam template perpendicularity correction support.
The embodiment of the application is realized as follows:
the embodiment of the application provides a T roof beam template straightness correction support that hangs down includes:
the upright stanchions are strip-shaped, and the side walls of the upright stanchions are planes for limiting the side walls of the templates;
the cross rod is fixedly connected to the middle part of the upright post and is vertical to the length direction of the upright post;
the hanging seat is fixedly connected to one end of the vertical rod, and the extending direction of the hanging seat is parallel to the length direction of the transverse rod;
the lifting ring is fixedly connected to one side, far away from the upright stanchion, of the lifting seat;
wherein, the hanging seat includes counter weight portion and supporting part, counter weight portion with supporting part fixed connection, the area of counter weight portion is greater than the area of supporting part, rings are located counter weight portion with between the supporting part, the pole setting with supporting part fixed connection works as when the hanging seat suspends in midair, the pole setting is in vertical state.
In some embodiments, further comprising:
the supporting ribs are positioned in the middle of the vertical rods and are fixedly connected between the vertical rods and the cross rods;
the support ribs are obliquely arranged and form three side lengths of a triangle with the vertical rods and the cross rods respectively, so that the cross rods are supported.
In some embodiments, the support bars are implemented as right-angled triangular steel plates;
one right-angle side of the supporting rib is attached to the vertical rod, and the other right-angle side of the supporting rib is attached to the cross rod.
In some embodiments, further comprising:
the limiting strip is fixedly connected to one end, far away from the vertical rod, of the cross rod, and the cross section area of the limiting strip is larger than that of the cross rod;
and a groove for supporting the template is formed at the joint of the limiting strip and the cross rod.
In some embodiments, further comprising:
the bottom rod is fixedly connected to one side of the vertical rod, which is far away from the hanging seat, and the length direction of the bottom rod is vertical to that of the transverse rod;
the side wall of the lifting seat is far away from the vertical rod and the middle part of the bottom rod is fixedly connected, the low rod and the vertical rod jointly form a plane for supporting the outer wall of the template, and the weight of the counterweight part is equal to the sum of the weights of the counterweight part, the vertical rod, the cross rod and the bottom rod.
In some embodiments, at least two of the uprights and the cross-bar are provided;
the cross rods are in one-to-one correspondence with the vertical rods, the vertical rods are parallel to each other and are arranged at intervals, one ends of the vertical rods are fixedly connected with the hanging seat, and the other ends of the vertical rods are fixedly connected with the bottom rods.
In some embodiments, further comprising:
the connecting rod is fixedly connected between the two upright rods;
the length direction of the connecting rod is parallel to that of the bottom rod, and the connecting rod and the bottom rod are arranged at intervals.
In some embodiments, the bottom rod is implemented as an i-steel, and the bottom rod and the vertical rod are welded and fixed on the side far away from the hanging seat.
In some embodiments, at least two of said uprights and said cross-bar are provided;
the two upright rods are parallel to each other in length direction and arranged at intervals, the end parts of the upright rods are fixedly connected with the hanging seat, the side walls of the upright rods are located on a plane, and the side walls of the cross rods are located on a plane.
In some embodiments, the vertical rod is provided with a strip-shaped groove along the length direction;
and the end part of the upright rod is welded and fixed with the hanging seat.
The beneficial effects of the application are that; through being connected with rings with the cable wire of hoist and mount usefulness, the cable wire drives the lifting seat unsettled gradually, the lifting seat drives pole setting and horizontal pole unsettled in proper order, the lateral wall of pole setting simultaneously is laminated with the lateral wall of template, the horizontal pole is towards one side lateral wall of lifting seat and the diapire laminating of template, and then support the template, the lateral wall through the pole setting that is in vertical state to the template simultaneously carries out the check-up, thereby detect the straightness that hangs down of template, can realize overcoming and use plumb line and sash weight to carry out the efficiency and the lower defect of precision that the template was rectified, improve the efficiency that detects the straightness that hangs down of template.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a structural diagram of a T-beam template perpendicularity correction bracket according to an embodiment of the present application;
FIG. 2 is a side view of a T-beam template perpendicularity correction bracket according to another embodiment of the present application;
fig. 3 is a front view of a T-beam formwork perpendicularity correction bracket according to another embodiment of the present application.
Description of reference numerals: 1. erecting a rod; 2. a cross bar; 21. a limiting strip; 22. a groove; 3. a hanging seat; 4. a hoisting ring; 5. reinforcing ribs; 6. a bottom bar; 7. a connecting rod.
Detailed Description
To make the objects, embodiments and advantages of the present application clearer, the following description of exemplary embodiments of the present application will clearly and completely describe the exemplary embodiments of the present application with reference to the accompanying drawings in the exemplary embodiments of the present application, and it is to be understood that the described exemplary embodiments are only a part of the embodiments of the present application, and not all of the embodiments.
It should be noted that the brief descriptions of the terms in the present application are only for convenience of understanding of the embodiments described below, and are not intended to limit the embodiments of the present application. These terms should be understood in their ordinary and customary meaning unless otherwise indicated.
The terms "first," "second," "third," and the like in the description and claims of this application and in the above-described drawings are used for distinguishing between similar or analogous objects or entities and not necessarily for describing a particular sequential or chronological order, unless otherwise indicated. It is to be understood that the terms so used are interchangeable under appropriate circumstances.
The terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or apparatus that comprises a list of elements is not necessarily limited to all elements expressly listed, but may include other elements not expressly listed or inherent to such product or apparatus.
As shown in fig. 1-2. Fig. 1 is a structural diagram of a T-beam template perpendicularity correction bracket according to an embodiment of the present application; fig. 2 is a side view of a T-beam formwork perpendicularity correction bracket according to another embodiment of the present application.
In some embodiments, the perpendicularity correcting support for the T-beam formwork comprises an upright 1, a cross rod 2, a hanging seat 3 and a hanging ring 4, wherein the upright 1 is in a strip shape with a rectangular cross section, and in the embodiment, the upright 1 is vertically arranged; the cross bar 2 is also in a strip shape with a rectangular cross section, the length direction of the cross bar 2 is vertical to the length direction of the upright stanchion 1, and one side of the cross bar 2 is fixedly connected with the middle part of the upright stanchion 1; the hanging seat 3 is fixedly connected with the end part of the vertical rod 1, and the plane of the hanging seat 3 is vertical to the length direction of the vertical rod 1; the hanging ring 4 is annular and is welded and fixed on the side wall of the hanging seat 3 far away from the vertical rod 1.
The lifting seat 3 comprises a counterweight part and a supporting part, the counterweight part and the supporting part are sequentially arranged, the weight of the counterweight part is equal to the sum of the weights of the supporting part, the upright rod 1 and the cross rod 2, and the lifting ring 4 is fixedly connected at the joint of the counterweight part and the supporting part.
Through being connected with rings 4 with the cable wire of hoist and mount usefulness, the cable wire drives hanger 3 unsettled gradually, hanger 3 drives pole setting 1 and horizontal pole 2 unsettled in proper order, the lateral wall of pole setting 1 simultaneously and the lateral wall laminating of template, horizontal pole 2 is towards one side lateral wall of hanger 3 and the diapire laminating of template, and then support the template, the while is through the pole setting 1 that is in vertical state to the lateral wall of template check-up, thereby detect the straightness that hangs down of template, can realize overcoming and use plumb line and sash weight to carry out the efficiency and the lower defect of precision that the template was rectified, improve the efficiency that detects and rectifies the template straightness, and then shorten the construction cycle of bridge.
In some embodiments, in order to improve the supporting effect of the cross rod 2 on the formwork, the reinforcing rib 5 is further fixedly connected between the cross rod 2 and the vertical rod 1, the reinforcing rib 5 is obliquely arranged along the length direction of the cross rod 2, and the cross rod 2, the vertical rod 1 and the reinforcing rib 5 form three triangular sides, so that the vertical convenience between the cross rod 2 and the vertical rod 1 is improved, and the reliability of detecting the verticality of the formwork is improved.
In some embodiments, the reinforcing rib 5 is a right triangle steel plate, one right-angle side of the reinforcing rib 5 is parallel to the length direction of the cross rod 2 and is fixedly connected with the cross rod 2 in a welding manner, and the other right-angle side of the reinforcing rib 5 is parallel to the length direction of the vertical rod 1 and is fixedly connected with the vertical rod 1 in a welding manner.
Through setting up strengthening rib 5 into right triangle, two right-angle sides of strengthening rib 5 support horizontal pole 2 and pole setting 1 respectively to make horizontal pole 2 and pole setting 1 keep perpendicular to be connected, and then improve the straightness that hangs down of template and carry out the reliability that detects.
In some embodiments, in order to reduce the probability of the formwork sliding on the cross bar 2, a limiting strip 21 is further fixedly connected to one end of the cross bar 2, which is far away from the vertical rod 1, the cross-sectional area of the limiting strip 21 is larger than that of the cross bar 2, the side wall of the limiting strip 21 protrudes out of the side wall of the cross bar 2, and the limiting strip 21 and the side wall of the cross bar 2 form a groove 22 for limiting the formwork sliding.
Through placing the template on horizontal pole 2, the template is restricted by the recess 22 that horizontal pole 2 and spacing 21 formed to reduce pole setting 1 and take place wobbling probability at unsettled in-process, conveniently detect the straightness that hangs down of template through the stand of vertical state, improve the efficiency that detects the template straightness that hangs down.
Referring to fig. 3, fig. 3 is a front view of a T-beam formwork perpendicularity correction bracket according to another embodiment of the present application.
In some embodiments, in order to facilitate the attachment of the upright stanchion 1 to the outer side of the formwork, the end part of the upright stanchion 1 far away from the hanging seat 3 is fixedly connected with a bottom rod 6, the middle part of the bottom rod 6 is fixedly connected with the bottom end of the upright stanchion 1, and the upright stanchion 1 and the bottom rod 6 form a plane perpendicular to the length direction of the cross rod 2; meanwhile, the weight of the counterweight part is equal to the sum of the weights of the bottom rod 6, the vertical rod 1, the cross rod 2 and the balance part.
Because the weight of counter weight portion is equal to the weight sum of sill bar 6, pole setting 1, horizontal pole 2 and balancing unit, consequently when rings 4 suspend gradually under traction equipment's drive empty, pole setting 1 is in vertical state, forms the periphery side that the plane was close to the template through pole setting 1 and sill bar 6 to the convenient straightness that hangs down to the template is judged, improves the straightness's that hangs down convenience of detection template.
In some embodiments, at least two upright posts 1 are arranged between the bottom rod 6 and the hanging seat 3, the length directions of the two upright posts 1 are parallel to each other and are arranged at intervals along the length direction of the bottom rod 6, the tops of the two upright posts 1 are welded and fixed with the bottom wall of the hanging seat 3, and the bottoms of the two upright posts 1 are welded and fixed with the bottom rod 6; the cross rods 2 are also provided with two cross rods 2, the cross rods 2 correspond to the upright rods 1 one by one, the two cross rods 2 form a plane perpendicular to the length direction of the upright rods 1, and the length directions of the two cross rods 2 are parallel to each other.
The two upright posts 1 are connected with the bottom rod 6, so that the connection stability of the bottom rod 6 is improved, and meanwhile, the probability of the joint of the plane where the bottom rod 6 and the upright posts 1 are located and the outer wall of the template can be further increased, the detection on the verticality of the outer wall of the template is facilitated, and the probability of the inclination of the template is reduced; simultaneously, support the diapire of template through two horizontal poles 2, reduce two horizontal poles 2 and hang down the straightness in-process at the survey template and take place the probability of buckling, improve the straightness's of surveying efficiency.
In some embodiments, in order to further improve the degree of stability of two pole settings 1, still welded fastening has connecting rod 7 between two pole settings 1, and the length direction of connecting rod 7 is parallel with the length direction of sill bar 6, and leaves between connecting rod 7 and the sill bar 6 to be provided with the clearance, cooperates jointly through connecting rod 7 and sill bar 6 and makes the stand more stable, reduces the crooked probability of stand.
In some embodiments, in order to reduce the weight of the whole support, the bottom rod 6 is made of i-steel, the ends, far away from the hanging seat 3, of the bottom rod 6 and the vertical rod 1 are fixedly connected in a welding mode, and as the bottom rod 6 is made of i-steel, compared with a rectangular steel rod, the bottom rod 6 is made of fewer materials and lighter in weight, so that the load in the process of driving the whole support to hang in the air can be reduced, and meanwhile, the convenience for transferring the support can also be improved.
In some embodiments, in order to further reduce the weight of the whole support, the vertical rod 1 is provided with a strip-shaped groove along the length direction thereof, the top end of the vertical rod 1 is fixedly connected with the bottom wall of the hanging seat 3 in a welding manner, and the length direction of the vertical rod 1 is perpendicular to the plane where the bottom wall of the hanging seat 3 is located; set up the dead weight that the bar groove can further reduce pole setting 1 through the length direction along pole setting 1, further improve the convenience of moving movable support.
In some embodiments, the support comprises a hanging ring 4, a hanging seat 3, at least two upright rods 1 and at least two cross rods 2, wherein the hanging ring 4 is fixedly connected to the top of the hanging seat 3 in a welding manner, the two upright rods 1 are both fixedly welded to the bottom wall of the hanging seat 3, the length direction of the two upright rods 1 is perpendicular to the plane of the bottom wall of the hanging seat 3, and the two upright rods 1 are located on one side of the hanging seat 3; horizontal pole 2 and pole setting 1 welded fastening, the middle part fixed connection of horizontal pole 2 and pole setting 1, the extending direction orientation of two horizontal poles 2 is the same, and the lateral wall of two horizontal poles 2 is located the coplanar simultaneously.
Through the outer wall laminating of pole setting 1 with the template, horizontal pole 2 stretches into to the bottom of template, and when rings 4 drove davit 3 and pole setting 1 suspension, pole setting 1 received self gravity to keep vertical state, detects the state of template through pole setting 1 and horizontal pole 2, improves the efficiency that detects the template straightness that hangs down to overcome plumb line and drop hammer and carry out the efficiency and the lower defect of precision that the template was rectified.
The beneficial effects of this part of embodiment lie in, be connected with rings 4 through the cable wire that will hoist and mount the usefulness, the cable wire drives hanger 3 unsettled gradually, hanger 3 drives pole setting 1 and horizontal pole 2 unsettled in proper order, the lateral wall of pole setting 1 simultaneously is laminated with the lateral wall of template, horizontal pole 2 is laminated with the diapire of template towards one side lateral wall of hanger 3, and then support the template, the lateral wall of template is checked through pole setting 1 that is in vertical state simultaneously, thereby detect the straightness that hangs down of template, can realize overcoming and use plumb line and sash weight to carry out the efficiency and the lower defect of precision that the template was rectified, the efficiency of detecting and proofreading the template straightness that hangs down is improved, and then the construction cycle of bridge shortens.
The foregoing description, for purpose of explanation, has been described with reference to specific embodiments. However, the foregoing discussion in some embodiments is not intended to be exhaustive or to limit the implementations to the precise forms disclosed above. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles and the practical application, to thereby enable others skilled in the art to best utilize the embodiments and various embodiments with various modifications as are suited to the particular use contemplated.
Claims (10)
1. The utility model provides a T roof beam template straightness correction support that hangs down which characterized in that includes:
the upright stanchion is strip-shaped, and the side wall of the upright stanchion is a plane for limiting the side wall of the template;
the cross rod is fixedly connected to the middle part of the upright rod and is vertical to the length direction of the upright rod;
the lifting seat is fixedly connected to one end of the vertical rod, and the extending direction of the lifting seat is parallel to the length direction of the transverse rod;
the lifting ring is fixedly connected to one side of the lifting seat, which is far away from the upright stanchion;
the lifting seat comprises a counterweight part and a supporting part, the area of the counterweight part is larger than that of the supporting part, the counterweight part is fixedly connected with the supporting part, the lifting ring is located between the counterweight part and the supporting part, the vertical rod is fixedly connected with the supporting part, and when the lifting seat is suspended in a suspension mode, the vertical rod is in a vertical state.
2. The T-beam template perpendicularity correction bracket of claim 1, further comprising:
the supporting ribs are positioned in the middle of the vertical rods and are fixedly connected between the vertical rods and the cross rods;
the supporting ribs are obliquely arranged and form three side lengths of a triangle with the vertical rods and the cross rods respectively, so that the cross rods are supported.
3. The T-beam formwork perpendicularity correction bracket of claim 2, wherein the support ribs are implemented as right-angled triangular steel plates;
one right-angle side of the supporting rib is attached to the vertical rod, and the other right-angle side of the supporting rib is attached to the cross rod.
4. The T-beam template perpendicularity correction bracket of claim 1, further comprising:
the limiting strip is fixedly connected to one end, far away from the vertical rod, of the cross rod, and the cross section area of the limiting strip is larger than that of the cross rod;
and a groove for supporting the template is formed at the joint of the limiting strip and the cross rod.
5. The T-beam template perpendicularity correction bracket of claim 1, further comprising:
the bottom rod is fixedly connected to one side of the vertical rod, which is far away from the hanging seat, and the length direction of the bottom rod is vertical to that of the transverse rod;
wherein, the pole setting is kept away from the lateral wall of hanger bracket with the middle part fixed connection of sill bar, low pole with the pole setting forms the plane that is used for supporting the template outer wall jointly, the weight of counter weight portion equals the weight sum of counter weight portion, pole setting, horizontal pole, sill bar.
6. The T-beam formwork perpendicularity correcting support as claimed in claim 5, wherein at least two of the upright and the cross bar are provided;
the cross rods are in one-to-one correspondence with the vertical rods, the vertical rods are parallel to each other and are arranged at intervals, one ends of the vertical rods are fixedly connected with the hanging seat, and the other ends of the vertical rods are fixedly connected with the bottom rods.
7. The T-beam template perpendicularity correction bracket of claim 6, further comprising:
the connecting rod is fixedly connected between the two upright rods;
the length direction of the connecting rod is parallel to that of the bottom rod, and the connecting rod and the bottom rod are arranged at intervals.
8. The perpendicularity correcting support for the T-beam formwork of claim 5, wherein the bottom rod is made of I-shaped steel, and the bottom rod and the upright rod are welded and fixed on one side far away from the hanging seat.
9. The T-beam formwork perpendicularity correcting support as claimed in claim 1, wherein at least two of the upright and the cross bar are provided;
the two upright rods are parallel to each other in length direction and arranged at intervals, the end parts of the upright rods are fixedly connected with the hanging seat, the side walls of the upright rods are located on a plane, and the side walls of the cross rods are located on a plane.
10. The T-beam formwork perpendicularity correcting bracket as defined in any one of claims 1 to 9, wherein the upright is provided with a strip-shaped groove along a length direction thereof;
and the end part of the vertical rod is welded and fixed with the hanging seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211164327.3A CN115369774A (en) | 2022-09-23 | 2022-09-23 | T beam mold board straightness correction support that hangs down |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211164327.3A CN115369774A (en) | 2022-09-23 | 2022-09-23 | T beam mold board straightness correction support that hangs down |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115369774A true CN115369774A (en) | 2022-11-22 |
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ID=84071594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211164327.3A Pending CN115369774A (en) | 2022-09-23 | 2022-09-23 | T beam mold board straightness correction support that hangs down |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115369774A (en) |
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2022
- 2022-09-23 CN CN202211164327.3A patent/CN115369774A/en active Pending
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