CN113843763A - Scriber for blanking I-steel and line drawing method - Google Patents
Scriber for blanking I-steel and line drawing method Download PDFInfo
- Publication number
- CN113843763A CN113843763A CN202111231048.XA CN202111231048A CN113843763A CN 113843763 A CN113843763 A CN 113843763A CN 202111231048 A CN202111231048 A CN 202111231048A CN 113843763 A CN113843763 A CN 113843763A
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- steel
- plate
- vertical clamping
- blanking
- scriber
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 97
- 239000010959 steel Substances 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000001427 coherent effect Effects 0.000 claims description 4
- 238000002789 length control Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 4
- 239000011111 cardboard Substances 0.000 description 4
- 238000003754 machining Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H7/00—Marking-out or setting-out work
- B25H7/04—Devices, e.g. scribers, for marking
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a scriber for I-steel blanking, which comprises a rigid connecting rod and two vertical clamping plates, wherein the two vertical clamping plates are oppositely arranged, two ends of the rigid connecting rod are respectively and vertically welded with the vertical clamping plates into a whole, the middle lower part of each vertical clamping plate is hollowed out to form a web plate avoiding area, and wing plate clamping grooves extending upwards are respectively formed along the left edge and the right edge of the web plate avoiding area. Meanwhile, a line drawing method for blanking of the I-steel is further disclosed. The portable scriber is designed according to the type and shape characteristics of the I-steel, has the characteristics of portability and quickness, and can ensure that the cutting section of the I-steel is level and has no error in the vertical direction; compare artifical setting-out of tradition, improved the efficiency of construction greatly, practiced thrift the cost of labor, can guarantee the welding seam width requirement again simultaneously, ensure steel sheet connection quality, be applicable to all and relate to I-steel processing and cut accurate location.
Description
Technical Field
The invention relates to the technical field of engineering construction tools, in particular to an equal-section scriber used for blanking I-steel and a scribing method thereof.
Background
The primary support of the tunnel adopts I-shaped steel for supporting, the I-shaped steel is manufactured in sections, and the I-shaped steel is spliced by adopting connecting steel plates and bolts on site. The I-steel needs to be fed according to the designed length, and the traditional I-steel feeding mainly adopts a straight steel ruler to draw lines and then is cut into sections.
The traditional I-steel cutting line is drawn by a straight steel ruler, the cross section of the I-steel is H-shaped, the straight steel ruler is drawn in a segmented mode, the line drawing process is discontinuous, especially, deviation is easy to occur at an I-steel web plate, the web plates are not parallel and level during cutting, the sizes of the finally formed cross sections are not consistent, the welding positions of connecting steel plates and the quality of welding seams cannot be guaranteed, and the qualification rate of primary support arch centering unit shearing connection in a hole is low due to direct construction.
Disclosure of Invention
The invention aims to provide a scriber special for blanking I-steel, which can ensure that a cutting surface is vertical and has no deviation, the cut surface is of an equal section, and the welding position and the welding seam quality of a connecting steel plate are high.
Therefore, the technical scheme adopted by the invention is as follows: a scriber for blanking I-steel and a scribing method comprise a rigid connecting rod and two vertical clamping plates, wherein the two vertical clamping plates are oppositely arranged, two ends of the rigid connecting rod are respectively and vertically welded with the vertical clamping plates into a whole, the middle lower part of each vertical clamping plate is hollowed out to form a web plate avoiding area, and wing plate clamping grooves extending upwards are respectively formed along the left edge and the right edge of the web plate avoiding area; the height of the vertical clamping plate is larger than the width W of a wing plate of the I-shaped steel, the depth of the wing plate clamping groove is equal to the distance L1 from the end head of the wing plate of the I-shaped steel to a web plate, the height of the web plate avoiding area is equal to the sum of L1 and the thickness L2 of the web plate, and the width of the wing plate clamping groove is consistent with the thickness D of the wing plate of the I-shaped steel; the rigid connecting rods are located right above the web avoiding area, and the number of the rigid connecting rods is at least two.
Preferably, the vertical clamping plate is made of a steel plate with the thickness of 3mm, and the rigid connecting rod is made of round steel with the diameter of 8 mm.
Further preferably, the rigid connection rod adopts a telescopic sleeve structure, can adjust the length, is provided with a row of jacks along the side wall of the telescopic sleeve for inserting the bolts, and the bolts are inserted into different jacks to limit the length of the sleeve.
More preferably, the rigid connecting rod is made of round steel.
Meanwhile, the invention also provides a line drawing method by using the scriber for blanking I-steel, which comprises the following steps:
firstly, carrying out hand-held rigid connecting rods, and moving a scriber for blanking I-steel to a position right above a position, to be blanked, of the I-steel;
secondly, clamping each vertical clamping plate into two wing plates of the I-steel through two wing plate clamping grooves respectively, wherein a web avoiding area is just propped against a web of the I-steel, and the lower end of each vertical clamping plate is just flush with the lower end of a wing plate of the I-steel;
and thirdly, drawing lines along the joint of each vertical clamping plate and the I-shaped steel to draw a complete and coherent blanking section line, determining the length of the blanking I-shaped steel according to the distance between the opposite deviating sides of the two vertical clamping plates, and taking out the rigid connecting rod by hand to draw the next section of I-shaped steel after the drawing is finished.
The invention has the beneficial effects that: according to the type and shape characteristics of the I-steel, the portable scriber is designed, has the characteristics of convenience and quickness, and can ensure that the cutting section of the I-steel is level and has no error in the vertical direction. The I-steel scriber sets up a vertical cardboard in the front and back, sets up I-steel pterygoid lamina draw-in groove on the vertical cardboard, makes things convenient for the I-steel directly to block into the inslot, adopts the rigid link pole to connect between two vertical cardboards, makes things convenient for personnel to carry. During the use, with the scriber card on the I-steel to vertical cardboard is as the location scriber, and the setting-out is dealt with. Compare artifical setting-out of tradition, improved the efficiency of construction greatly, practiced thrift the cost of labor, can guarantee the welding seam width requirement again simultaneously, ensure steel sheet connection quality, be applicable to all and relate to I-steel processing and cut accurate location.
Drawings
Fig. 1 is a perspective view of the structure of the present invention.
Fig. 2 is a perspective view of the present invention in use.
FIG. 3 is a cross-sectional view of an I-beam.
Detailed Description
The invention will be further illustrated by the following examples in conjunction with the accompanying drawings:
referring to fig. 1-2, the scriber for blanking of the I-steel mainly comprises a rigid connecting rod 2 and two vertical clamping plates 1.
The two vertical clamping plates 1 are oppositely arranged, and two ends of the rigid connecting rod 2 are respectively and vertically welded with the vertical clamping plates 1 to form a whole. The spacing distance between the two rigid connecting plates 1 is determined by the blanking length of the I-shaped steel, and the rigid connecting rods 2 not only play a connecting role, but also are used as handles to facilitate operation.
The middle lower part of each vertical clamping plate 1 is hollowed into a web plate avoiding area 1a, and wing plate clamping grooves 1b extending upwards are formed along the left edge and the right edge of the web plate avoiding area 1a respectively.
Referring to fig. 1-3, the height of the vertical clamping plate 1 is greater than the width W of a wing plate 3a of the i-steel 3, the depth of a wing plate clamping groove 1b is equal to the distance L1 from the end of the wing plate 3a of the i-steel 3 to a web 3b, the height of the web avoiding area 1a is equal to the sum of the thickness L1 and the thickness L2 of the web 3b, and the width of the wing plate clamping groove 1b is equal to the thickness D of the wing plate 3a of the i-steel 3. By means of the size limitation, when the scriber and the scribing method for blanking the I-steel are used, the two wing plates of the I-steel are clamped in the two wing plate clamping grooves respectively, the web avoiding area is just staggered with the web, the lower end of the vertical clamping plate is just level with the lower end of the wing plate of the I-steel, and operation is convenient. Meanwhile, lines are drawn along the joint of the vertical clamping plates and the I-shaped steel, complete and coherent blanking section lines can be drawn, the blanking section lines at two ends of the I-shaped steel are just drawn by the two vertical clamping plates, the operation is completed at one time, and the operation efficiency is high.
Preferably, the rigid connecting rods 2 are positioned right above the web plate avoiding area 1a, the rigid connecting rods 2 can be made of round steel, and at least two rigid connecting rods 2 are provided; in addition, the vertical clamping plate 1 is made of a steel plate with the thickness of 3mm, and the rigid connecting rod 2 is made of round steel with the diameter of 8mm, but the invention is not limited to this.
Rigid connection pole 2 adopts the telescope tube structure, can carry out length adjustment, is provided with a jack along the telescope tube lateral wall and supplies the bolt to insert, carries out telescopic length in the bolt inserts different jacks and prescribes a limit to satisfy the I-steel unloading of different length and use.
A line drawing method using the line drawing device for I-steel blanking comprises the following steps:
firstly, carrying out hand lifting on the rigid connecting rod 2, and moving a scriber for blanking I-steel to a position right above a position, to be blanked, of the I-steel;
secondly, clamping each vertical clamping plate 1 into two wing plates of the I-steel through two wing plate clamping grooves 1b respectively, wherein a web plate avoiding area 1a is just propped against a web plate of the I-steel, and the lower end of each vertical clamping plate 1 is just flush with the lower end of a wing plate of the I-steel;
thirdly, drawing lines along the joint of each vertical clamping plate 1 and the I-shaped steel to draw a complete and coherent blanking section line, determining the length of the blanking I-shaped steel according to the distance between the opposite deviating sides of the two vertical clamping plates 1, and taking out the portable rigid connecting rod 2 to draw the next section of I-shaped steel after the drawing is finished.
The scriber is applied to an arch cutting procedure in tunnel steel arch machining, the average scriber of each I-steel unit only needs 10s, the cutting surface is vertical and has no deviation, the problem of the scribing deviation of an I-steel web plate is effectively solved, the scriber can be directly embedded into I-steel, the scriber is formed in one step, the scriber is convenient and fast, and the arch machining yield is obviously improved.
And (3) economic benefit analysis: the cutting efficiency of each I-steel unit is improved by 1min, if 62500I-steel units are used for primary support of a tunnel, the working hours are saved by 130 days, the mounting efficiency of the arch centering of the primary support in the tunnel is improved, the connecting steel plate can be accurately centered, and the specific cost saving analysis is shown in the following table.
Claims (5)
1. The utility model provides a scriber is used in I-steel unloading which characterized in that: the device comprises a rigid connecting rod (2) and two vertical clamping plates (1), wherein the two vertical clamping plates (1) are oppositely arranged, two ends of the rigid connecting rod (2) are respectively and vertically welded with the vertical clamping plates (1) to form a whole, the middle lower part of each vertical clamping plate (1) is hollowed to form a web plate avoiding area (1a), and wing plate clamping grooves (1b) extending upwards are respectively formed along the left edge and the right edge of the web plate avoiding area (1 a); the height of the vertical clamping plate (1) is larger than the width W of a wing plate (3a) of the I-steel (3), the depth of a wing plate clamping groove (1b) is equal to the distance L1 from the end of the wing plate (3a) of the I-steel (3) to a web plate (3b), the height of the web plate avoiding area (1a) is equal to the sum of the thickness L2 of the web plate (3b) and L1, and the width of the wing plate clamping groove (1b) is consistent with the thickness D of the wing plate (3a) of the I-steel (3); the rigid connecting rods (2) are located right above the web avoiding area (1a), and at least two rigid connecting rods (2) are arranged.
2. The scriber for blanking of the I-steel according to claim 1, which is characterized in that: the vertical clamping plate (1) is made of a steel plate with the thickness of 3mm, and the rigid connecting rod (2) is made of round steel with the diameter of 8 mm.
3. The scriber for blanking of the I-steel according to claim 1, which is characterized in that: rigid connection pole (2) adopt the telescope tube structure, can carry out length control, are provided with a jack along the telescope tube lateral wall and supply the bolt to insert, and the bolt carries out telescopic length in inserting different jacks and prescribes a limit to.
4. The scriber for blanking of the I-steel according to claim 1, which is characterized in that: the rigid connecting rod (2) is made of round steel.
5. A line drawing method by using the line drawing device for blanking I-steel as claimed in any one of claims 1 to 4, characterized by comprising the following steps:
firstly, carrying out hand lifting on a rigid connecting rod (2), and moving a scriber for blanking I-steel to a position right above a position, to be blanked, of the I-steel;
secondly, clamping each vertical clamping plate (1) into two wing plates of the I-shaped steel through two wing plate clamping grooves (1b), wherein a web avoiding area (1a) is just propped against a web of the I-shaped steel, and the lower end of each vertical clamping plate (1) is just level with the lower end of a wing plate of the I-shaped steel;
thirdly, drawing lines along the joint of each vertical clamping plate (1) and the I-steel, drawing complete and coherent blanking section lines, determining the length of the blanking I-steel according to the distance between the opposite deviating sides of the two vertical clamping plates (1), and taking out the portable rigid connecting rod (2) to draw the next section of I-steel after the drawing is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111231048.XA CN113843763A (en) | 2021-10-22 | 2021-10-22 | Scriber for blanking I-steel and line drawing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111231048.XA CN113843763A (en) | 2021-10-22 | 2021-10-22 | Scriber for blanking I-steel and line drawing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113843763A true CN113843763A (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111231048.XA Pending CN113843763A (en) | 2021-10-22 | 2021-10-22 | Scriber for blanking I-steel and line drawing method |
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| Country | Link |
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| CN (1) | CN113843763A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020157269A1 (en) * | 2001-04-26 | 2002-10-31 | Caudle James T. | Measuring instrument |
| CN104227691A (en) * | 2014-05-29 | 2014-12-24 | 中冶天工集团有限公司 | Method for scribing reference surface of single H-shaped steel member |
| CN106272321A (en) * | 2016-08-31 | 2017-01-04 | 中船黄埔文冲船舶有限公司 | Setting-out frock, line-plotting device and line drawing method |
| US20190118369A1 (en) * | 2017-10-20 | 2019-04-25 | Randy Denton | Wood-I Floor Beam Square |
| CN211777489U (en) * | 2020-01-17 | 2020-10-27 | 中交一公局第二工程有限公司 | Steel bow member cutting marking off positioner |
| CN214162982U (en) * | 2020-12-21 | 2021-09-10 | 黄石市砼锚五金机电设备有限公司 | I-steel right angle cutting auxiliary device |
-
2021
- 2021-10-22 CN CN202111231048.XA patent/CN113843763A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020157269A1 (en) * | 2001-04-26 | 2002-10-31 | Caudle James T. | Measuring instrument |
| CN104227691A (en) * | 2014-05-29 | 2014-12-24 | 中冶天工集团有限公司 | Method for scribing reference surface of single H-shaped steel member |
| CN106272321A (en) * | 2016-08-31 | 2017-01-04 | 中船黄埔文冲船舶有限公司 | Setting-out frock, line-plotting device and line drawing method |
| US20190118369A1 (en) * | 2017-10-20 | 2019-04-25 | Randy Denton | Wood-I Floor Beam Square |
| CN211777489U (en) * | 2020-01-17 | 2020-10-27 | 中交一公局第二工程有限公司 | Steel bow member cutting marking off positioner |
| CN214162982U (en) * | 2020-12-21 | 2021-09-10 | 黄石市砼锚五金机电设备有限公司 | I-steel right angle cutting auxiliary device |
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Application publication date: 20211228 |
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| RJ01 | Rejection of invention patent application after publication |