CN2068875U - Adjustable steel saw frame of square tube - Google Patents
Adjustable steel saw frame of square tube Download PDFInfo
- Publication number
- CN2068875U CN2068875U CN 90200660 CN90200660U CN2068875U CN 2068875 U CN2068875 U CN 2068875U CN 90200660 CN90200660 CN 90200660 CN 90200660 U CN90200660 U CN 90200660U CN 2068875 U CN2068875 U CN 2068875U
- Authority
- CN
- China
- Prior art keywords
- saw blade
- square tube
- saw
- handle
- pull
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Abstract
The utility model relates to an improved steel saw frame which is composed of a square tube-shaped middle beam, a front square tube-shaped handle, a rear square tube-shaped handle, a pull rod, a stay bolt and pull nails for a front saw blade and a rear saw blade, wherein the pull nails for a front saw blade and a rear saw blade are arranged on two fixed positions which are in 90DEG and 45DEG with lengthways perpendicular lines of the front square tube-shaped handle and the rear square tube-shaped handle. A connecting line of the pull nails for a front saw blade and a rear saw blade is non-parallel to the middle beam, and saw blade adjusting steps are arranged in the rear square tube-shaped handle. The stay bolt is screwed at the inner lower end of the rear square tube-shaped handle, the stay bolt is screwed in (out) to tension the pull rod to adjust the tension of saw blades arranged on the pull nails for a front saw blade and a rear saw blade. The steel saw frame is hard to deform when bearing larger traction force, is laborsaving and timesaving when materials are sawed, and is free from the restriction of depth. The utility model can be assembled with multiple spare saw blades, and is especially suitable for operation under overhead conditions or complicated conditions.
Description
The utility model relates to a kind of improved metal-cutting machine tool, the square hollow section steel saw frame of a kind of activity specifically.
Existing hacksaw frame is to be made of central sill, handle, front and back saw blade blind rivet, perforated pins, set bolt.The hacksaw frame of selling on the market, its central sill have two sections flats solid, also have one section hollow garden tubular.The hacksaw frame of these versions, yielding when bearing pulling force greater than 100 kilograms, the vertical vertical line of setting of saw blade blind rivet and handle has 90 ° and 180 ° of two fixed positions.Limited by the degree of depth during saw material, and can not adjust the askew crack of saw material, parallel after saw blade is put on the shelf with central sill, effort during the saw material.Saw frame can not be equipped standby saw blade, is impractical in the operation under high-altitude or the complex conditions.
Task of the present utility model provides a kind of improved hacksaw frame, it greater than 100 kilograms indeformable during less than 150 kilograms of pulling force, the saw material is laborsaving, and not limited by the degree of depth, can adjust the askew crack of saw material automatically, can equip many standby saw blades.
The utility model is to realize like this, saw frame has one section square tube shape central sill, handle before and after the square tube shape, front and back saw blade blind rivet is respectively arranged with the vertical vertical line of handle and becomes 90 ° and 45 ° of two fixed positions, and the line and the central sill of front and back saw blade blind rivet are non-parallel, are provided with the saw blade adjustments step in the back handle top, back saw blade blind rivet is connected on the pull bar, pull bar is connected with stay-bolt, and stay-bolt is screwed in the nut that is fixed in the back handle, and the securable pull bar of rotating rod bolt is to adjust saw blade tension force.
Concrete structure of the present utility model is provided by following examples and accompanying drawing.
Fig. 1 is a square tube activity hacksaw frame structure chart.
As shown in Figure 1: one section square tube shape of saw frame central sill 3 places square tube shape front hand grip 2 and back handle 1, and front hand grip is that opening is shaken hands, and back handle is shaken hands for remaining silent, and back handle handshake part and horizontal plane have a slanted angle, and its angle is 91 °-140 °.Plus screw 9 runs through an end of central sill 3 and is fixed on the top of front hand grip 2, and back block 11 is arranged at the top of back handle 1, and the step 8 of adjusting is arranged in its hole, in order to regulate saw frame length, to be applicable to the saw blade of different length specification.Pull bar 4 is L-shaped, and its end runs through in the end that is fixed on back handle 1 by pull bar steady pin 7, and stay-bolt 14 runs through the other end of pull bar 4, is screwed in the pull-rod nut 5, and pull-rod nut 5 is fixed in the handshake part of back handle.Stay-bolt handle 6 is movable adjustable, and its two ends are the opening shape, and an end is riveted on the stay-bolt 14, and an end can be engaged on the pull bar 4.Back saw blade blind rivet 13 is fixed on the both sides of pull bar 4 corners, respectively with angle α=90 of the vertical vertical line X of handle ° and β=45 °, before saw blade blind rivet 12 be fixed on the both sides of front hand grip 2 lower ends, respectively with angle α=90 of the vertical vertical line X of handle ° and β=45 ° (seeing accompanying drawing 2).Fixedly during saw blade, the corresponding use in two positions of saw blade blind rivet, front and back, link to front hand grip inward flange distance H 1=85-110 millimeter between the saw blade blind rivet of front and back, to back handle inward flange distance H 2=100-120 millimeter, before and after saw blade is fixed on the saw blade blind rivet back saw frame be trapezoidal how much, the force is supported in the saw frame center.Block 10 before the leading section of front hand grip 2 has, the desirable standby saw blade that goes out to be equipped in the central sill of block before opening.
Saw frame square tube central sill is selected carbon element alloy steel material casting forming for use, and the front and back handle is selected alloy aluminum material casting forming for use.
During operation, filling standby saw blade in the central sill 3 is placed in the handle of front and back, screw plus screw 9, when selecting 300 millimeters metal saw blades for use, one end of central sill 3 is placed in to be regulated on the step 8, put down stay-bolt handle 6, screwing out stay-bolt 14 opens pull bar 4, saw blade is placed on the corresponding position of saw blade blind rivet, front and back, i.e. 90 ° or 45 ° of positions (when saw expects that the degree of depth is expected askew crack than big or adjustment saw, saw blade should be placed 45 ° of positions), hold stay-bolt handle 6 precession stay-bolts 14, tensioning pull bar 4 is stretched on the saw frame securely until saw blade, stay-bolt handle 6 is packed up be engaged on the pull bar 4, just can operate saw frame and saw material.Fracture or when changing saw blade, block 10 before opening screws out plus screw 9, reinstall use after taking out standby saw blade.
Use the utility model hacksaw frame, after measured, bear greater than 120 kg indeformable less than 150 kilograms of pulling force.When material saw, the force is supported in the saw frame center, and is laborsaving, save time, and the saw material is not limited by the degree of depth, and the metal saw blade of many standby different sizes can be equipped in the askew crack of adjustable saw material.And saw frame is in light weight, and is easy to carry, is particularly useful for the operation under high-altitude or the complex conditions.
Claims (6)
1, a kind of hacksaw frame that is made of central sill 3, back handle 1, front and back saw blade blind rivet 12 and 13, stay-bolt 14 is characterized in that having front hand grip 2, pull bar 4, regulates step 8, pull-rod nut 5; Central sill 3 is one section square tube shape and is connected with 2 with front and back handle 1, before and after saw blade blind rivet 12 and 13 to lay respectively at the both sides of front hand grip 2 and pull bar 4 and all have with the vertical vertical line X of handle be two fixed positions of α=90 ° and β=45 °, line and central sill between the front and back saw blade blind rivet 12 and 13 are non-parallel.
2, according to the described hacksaw frame of claim 1, the line before and after it is characterized in that between the blind rivet 12 and 13 is to front hand grip 2 inward flange distance H 1=85-110 millimeters, to back handle 1 inward flange distance H 2=100-120 millimeter.
3, according to claim 1 or 2 described hacksaw frames, it is characterized in that the center fixed of pull bar 4 has back saw blade blind rivet 13, its end connects back handle 1, the other end and stay-bolt 14 and 6 riveted joints of stay-bolt handle.
4, according to the described hacksaw frame of claim 3, it is characterized in that stay-bolt 14 is screwed in the pull-rod nut 5, pull-rod nut 5 is fixed in the back handle 1.
5, according to claim 1 or 2 or 4 described hacksaw frames, it is characterized in that central sill 3 is carbon element alloy steel material casting forming, front and back handle 1 and 2 is an alloy aluminum material casting forming.
6, according to the described hacksaw frame of claim 3, it is characterized in that central sill 3 is carbon element alloy steel material casting forming, front and back handle 1 and 2 is an alloy aluminum material casting forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90200660 CN2068875U (en) | 1990-01-16 | 1990-01-16 | Adjustable steel saw frame of square tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90200660 CN2068875U (en) | 1990-01-16 | 1990-01-16 | Adjustable steel saw frame of square tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2068875U true CN2068875U (en) | 1991-01-09 |
Family
ID=4882415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90200660 Withdrawn CN2068875U (en) | 1990-01-16 | 1990-01-16 | Adjustable steel saw frame of square tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2068875U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100335214C (en) * | 2004-09-23 | 2007-09-05 | 邬贤波 | Hand saw capable of instantaneously changing saw blade |
| CN100379513C (en) * | 2003-08-26 | 2008-04-09 | 斯坦利公司 | Hacksaw with blade tension adjustment mechanism |
-
1990
- 1990-01-16 CN CN 90200660 patent/CN2068875U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100379513C (en) * | 2003-08-26 | 2008-04-09 | 斯坦利公司 | Hacksaw with blade tension adjustment mechanism |
| CN100335214C (en) * | 2004-09-23 | 2007-09-05 | 邬贤波 | Hand saw capable of instantaneously changing saw blade |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |