CN201635742U - Fastening device for plough head of coal plough - Google Patents
Fastening device for plough head of coal plough Download PDFInfo
- Publication number
- CN201635742U CN201635742U CN2010201654081U CN201020165408U CN201635742U CN 201635742 U CN201635742 U CN 201635742U CN 2010201654081 U CN2010201654081 U CN 2010201654081U CN 201020165408 U CN201020165408 U CN 201020165408U CN 201635742 U CN201635742 U CN 201635742U
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- fastening stud
- wedge shape
- fixture block
- shape fixture
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Abstract
The utility model relates to the technical field of a coal plough for mining a thin coal seam of an underground coal mine, in particular to a fastening device for a plough head of the coal plough. In the prior art, two adjacent heightened blocks in the plough head are fastened by a single bolt; the bolt not only bears the tensile force, but also bears the shearing force, directly bears impact and is easy to damage; and increase of the diameter of the bolt needs larger pretightening force to fasten. The fastening device adopts a combined heightened block. Both ends of the combined heightened block are provided with T-shaped grooves. The T-shaped grooves are matched with T-shaped bosses of a wedge-shaped clamping block inserted on a fastening stud. The fastening stud is provided with two square structures which are symmetrical left and right. The square structures are inserted in a square through groove which is formed after the two heightened blocks are combined to limit freedom degree of the fastening stud. When angular deflection occurs between the two adjacent heightened blocks, a spherical washer arranged in the wedge-shaped clamping block is used to carry out regulation so as to prevent the fastening stud from being subjected to larger shearing force, improve the service life of the fastening stud and strengthen the stability of equipment.
Description
Technical field
The utility model relates to the coal plough technical field of thin seam mining under the coal mine, specifically a kind of fastener that is used for the coal plough planer head.
Background technology
Coal plough under traditional coal mine, to increase the connecting mode of taking between the piece (or dig body and increase piece) be single bolton in the planer head adjacent two, bolt had both born pulling force, bear shearing force again, bolt directly withstands shocks, and damages easily, and increases the diameter of bolt, though can improve bolt application life, need the bigger pretightning force could be fastening.
Summary of the invention
The purpose of this utility model provides a kind of fastener that is used for the coal plough planer head, has overcome existing technological deficiency.
The technical solution of the utility model is: the fastener of coal plough planer head by nut, fastening stud, increase piece A and increase piece B and form; Increase piece A and be placed on and increase above the piece B, increasing the piece connection place for two all has groove; Symmetrical two square structures are arranged on the fastening stud, and it passes by two increases in the formed square three-way groove in piece combination back; Also comprise spheric washer, wedge shape fixture block; The wedge shape fixture block is an oblong-shaped, and the centre is a through hole, and a side has two parallel T shape boss up and down, and opposite side has counterbore and the spheric washer groove consistent with the spheric washer arc; All there is the T connected in star at two two ends of increasing the contiguous groove of piece place, and distance and bevel angle on two distance and bevel angle and the two ends wedge shape fixture blocks of increasing between the T connected in star of two ends, piece combination back between T shape boss are corresponding respectively; Towards the T connected in star place of increasing piece, via through holes interts on the fastening stud both sides with the T shape boss side of two wedge shape fixture blocks, and two T shape boss match with two T connected in stars, fits in the inboard inclined-plane of T shape boss and T connected in star; Spheric washer is placed in the spheric washer groove of wedge shape fixture block, and its sphere side contacts with the gasket recess sphere of wedge shape fixture block, and the nut by two ends is fastened on the wedge shape fixture block on the fastening stud.
This device adopts the wedge shape fixture block, utilizes the wedge shape reinforcement principle, and only the less tensile force of need just can be fastening with two adjacent parts to make double-screw bolt, and the wedge shape fixture block bears direct impact.Regulate by spheric washer, reduce the suffered shearing force of fastening stud, strengthened the stability of equipment.
The utility model has the advantages that: solved adjacent two problems of increasing the easy fracture of fastening stud between the piece (or dig body and increase piece) in the planer head, significantly improved the application life of fastening stud.
Description of drawings
Fig. 1 is the front view that expression is used for the novel fastener of coal plough planer head;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the force analysis schematic diagram of wedge shape fixture block in the I partial enlarged drawing.
The specific embodiment
Among the figure: 1, nut, 2, spheric washer, 3, the wedge shape fixture block, 4, fastening stud, 5, increase piece A, 6, increase piece B.
As depicted in figs. 1 and 2, the utility model by nut 1, fastening stud 4, increase piece A5, increase piece B6, spheric washer 2 and wedge shape fixture block 3 form; Increase piece A5 and be placed on and increase above the piece B6, two increase between the piece combination back and form square three-way groove; Symmetrical two square structures are arranged on the fastening stud, and it passes by two increases in the formed square three-way groove in piece combination back, and square structure has limited the degree of freedom of fastening stud 4, and it can not be rotated.As shown in Figure 2; Wedge shape fixture block 3 is oblong-shapeds, and the centre is a through hole, and a side has two parallel T shape boss up and down, and opposite side has counterbore and the spheric washer groove consistent with spheric washer 2 arcs; All there is the T connected in star at two two ends of increasing the contiguous groove of piece place, and distance and bevel angle on two distance and bevel angle and the two ends wedge shape fixture blocks of increasing between the T connected in star of two ends, piece combination back 3 between T shape boss are corresponding respectively; Towards the T connected in star place of increasing piece, via through holes interts on fastening stud 4 both sides with the T shape boss side of two wedge shape fixture blocks 3, and two T shape boss match with two T connected in stars, is fitted in the inboard inclined-plane of T shape boss and T connected in star; Spheric washer 2 is placed in the spheric washer groove of wedge shape fixture block 3, and its sphere side contacts with the gasket recess sphere of wedge shape fixture block, and the nut 1 by two ends is fastened on the wedge shape fixture block on the fastening stud.
As shown in Figure 3, increase piece (or dig body and increase piece) when parallel when adjacent two, according to Newton's third law, the tensile force of double-screw bolt 4 and F equal and opposite in direction, direction are opposite, the impact force f along continuous straight runs that the wedge shape fixture block is subjected to decomposes, obtain horizontal direction component f1, vertical direction component f2, according to the dynamic balance axiom as can be known, F and f1 equal and opposite in direction, direction are opposite.So just can reach a conclusion, in the fastening process of nut, only need less moment of torsion output, just adjacent two can be increased piece (or dig body and increase piece) and be fixed together.
As shown in Figure 2, spheric washer 2 is placed in the wedge shape fixture block 3, during the equipment operation, after spheric washer 2 is stressed, owing to there is degree of freedom, can carry out rotation by a small margin, so just can be implemented among a small circle in adjustment double-screw bolt 4 stressed, reduce the stressed purpose of double-screw bolt 4 in non-horizontal direction.
The utility model device is installed at coal plough planer head place, increases piece (or dig body and increase piece) to adjacent two and carries out fastening.Stressed by lozenges reduces the tensile force of fastening stud.And in the planer head traveling process, when increasing between the piece (or dig body with increase piece) the generation angular deflection for adjacent two, can regulate by spheric washer, avoid fastening stud to be subjected to bigger shearing force, reach the effect that improves fastening stud application life, improves the equipment overall performance.
The utility model device also can be used on the situation similar two adjacent connectors.
Claims (1)
1. fastener that is used for the coal plough planer head, by nut (1), fastening stud (4), increase piece A (5) and increase piece B (6) and form, increasing piece A (5) is placed on and increases above the piece B (6), two increase the piece connection place all groove, symmetrical two square structures are arranged on the fastening stud (4), and it passes by adjacent two increases in the formed square three-way groove in piece combination back; It is characterized in that: also comprise spheric washer (2) and wedge shape fixture block (3); Wedge shape fixture block (3) is an oblong-shaped, and the centre is a through hole, and a side has two parallel T shape boss up and down, and opposite side has counterbore to reach and the consistent spheric washer groove of spheric washer (2) arc; All there is the T connected in star at two two ends of increasing the contiguous groove of piece place, and two to increase distance and bevel angle difference that distance and bevel angle and two ends wedge shape fixture blocks (3) between the T connected in star of two ends, piece combination back go up between T shape boss corresponding; Towards the T connected in star place of increasing piece, via through holes interts on fastening stud (4) both sides with the T shape boss side of two wedge shape fixture blocks (3), and two T shape boss match with two T connected in stars, fits in the inboard inclined-plane of T shape boss and T connected in star; Spheric washer (2) is placed in the spheric washer groove of wedge shape fixture block (3), and its sphere side contacts with the gasket recess sphere of wedge shape fixture block (3), and the nut (1) by two ends is fastened on the wedge shape fixture block on the fastening stud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201654081U CN201635742U (en) | 2010-04-02 | 2010-04-02 | Fastening device for plough head of coal plough |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201654081U CN201635742U (en) | 2010-04-02 | 2010-04-02 | Fastening device for plough head of coal plough |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201635742U true CN201635742U (en) | 2010-11-17 |
Family
ID=43080231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201654081U Expired - Fee Related CN201635742U (en) | 2010-04-02 | 2010-04-02 | Fastening device for plough head of coal plough |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201635742U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121386A (en) * | 2011-03-15 | 2011-07-13 | 三一重型装备有限公司 | Star wheel device and development machine |
| CN106493060A (en) * | 2015-09-06 | 2017-03-15 | 包明伦 | The clamp plate type attachment means of pneumatic vibrator |
| CN112908600A (en) * | 2021-02-20 | 2021-06-04 | 浙江博菲电气股份有限公司 | High-strength drawing magnetic slot wedge and manufacturing method thereof |
-
2010
- 2010-04-02 CN CN2010201654081U patent/CN201635742U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121386A (en) * | 2011-03-15 | 2011-07-13 | 三一重型装备有限公司 | Star wheel device and development machine |
| CN106493060A (en) * | 2015-09-06 | 2017-03-15 | 包明伦 | The clamp plate type attachment means of pneumatic vibrator |
| CN112908600A (en) * | 2021-02-20 | 2021-06-04 | 浙江博菲电气股份有限公司 | High-strength drawing magnetic slot wedge and manufacturing method thereof |
| CN112908600B (en) * | 2021-02-20 | 2024-04-05 | 浙江博菲电气股份有限公司 | High-strength drawing magnetic slot wedge and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20170402 |