CN220133990U - Fastening device for roadway support connection - Google Patents
Fastening device for roadway support connection Download PDFInfo
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- CN220133990U CN220133990U CN202320594821.7U CN202320594821U CN220133990U CN 220133990 U CN220133990 U CN 220133990U CN 202320594821 U CN202320594821 U CN 202320594821U CN 220133990 U CN220133990 U CN 220133990U
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- 210000001624 hip Anatomy 0.000 claims description 3
- 239000003245 coal Substances 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 description 17
- 239000010959 steel Substances 0.000 description 17
- 238000004519 manufacturing process Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 7
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model provides a fastening device for roadway support connection, and belongs to the technical field of coal mine support. The problem of poor connection stability of roadway support in the prior art is solved. This roadway support is connected with fastener, including punch holder and lower plate, be provided with the bolt that is used for fastening connection between punch holder and the lower plate, the bolt has the bolt head, the punch holder has the U template portion that is U template portion, one side of bolt head orientation U template portion has the plane of stopping rotating, should stop rotating the plane can with U template portion butt is in order to form and is stopped rotating the cooperation. The utility model has the advantages of improving the connection stability of the roadway support and being convenient to use.
Description
Technical Field
The utility model belongs to the technical field of coal mine support, and relates to a fastening device for roadway support connection.
Background
Most of coal mines in China belong to underground coal mines, so that most of coal mine production is underground operation, a large number of roadways are required to be excavated underground, roadway supports are adopted to keep the roadways smooth and surrounding rocks stable. At present, the U-shaped steel is widely applied in coal mine roadways due to the characteristics of high bearing pressure, long supporting time, easy installation, difficult deformation and the like, and most of existing roadway supports are assembled and designed by using the U-shaped steel, and the supporting structure is formed by splicing a plurality of sections of U-shaped steel to form a structure similar to an arch and is supported in the roadway.
The sections of U-shaped steel are generally fixedly connected by adopting a bracket clamping cable, and as disclosed in Chinese patent literature, an improved U-shaped steel telescopic roadway bracket clamping cable (application number: 200720041067.5) comprises an upper groove clamping plate and a lower groove clamping plate which are arranged in pairs and are provided with side wing plates in a half structure, and the side wing plates of the upper groove clamping plate and the side wing plates of the lower groove clamping plate are fastened by bolts; the back of the upper groove clamping plate and the back of the lower groove clamping plate are respectively provided with reinforcing ribs, and triangular connection is formed between the side wing plates and the wall plates through the reinforcing ribs respectively. The improved U-shaped steel telescopic roadway support clamping cable has the following defects when in use: because the roadway support needs to bear certain pressure in the use process, the bolt used for fastening is easy to rotate and loose due to the influence of external force, so that the connection stability between U-shaped steel is influenced, and the production safety is possibly endangered.
Disclosure of Invention
The utility model aims to solve the problems in the prior art and provides a fastening device for roadway support connection. The utility model aims to solve the technical problem of improving the connection stability of roadway supports and being convenient to use.
The aim of the utility model can be achieved by the following technical scheme:
the utility model provides a roadway support is connected and is used fastener, includes punch holder and lower plate, be provided with the bolt that is used for fastening connection between punch holder and the lower plate, the bolt has the bolt head, the punch holder has the U template portion that is the U type, its characterized in that, the width of bolt head increases gradually from the one side of keeping away from U template portion to the one side that is close to U template portion. So that the side of the bolt head facing the U-shaped plate part forms a rotation stopping plane which can be abutted with the U-shaped plate part to form rotation stopping fit.
When the connecting device is used, the ends of the two sections of U-shaped steel to be connected are overlapped together, then the overlapped part of the two sections of U-shaped steel is placed between the upper clamping plate and the lower clamping plate, the upper clamping plate and the lower clamping plate are fastened and connected by the bolts, so that the overlapped part of the two sections of U-shaped steel is clamped between the upper clamping plate and the lower clamping plate, the fixed connection between the two sections of U-shaped steel is realized, because the bolt heads are provided with rotation stopping planes towards one side of the U-shaped plate part, when the bolts are influenced by external force to rotate, the rotation stopping planes can form contact and butt with the side walls of the upper clamping plate according to different rotation directions, further rotation of the bolts is prevented, the stability of bolt connection is guaranteed, and the connection stability of roadway support can be improved. Meanwhile, the width of the bolt head is gradually increased from one side far away from the U-shaped plate part to one side close to the U-shaped plate part, so that the overall shape of the bolt head is similar to a triangle, the length of a rotation stopping plane is relatively long, the bolt head can be in contact and butt with the U-shaped plate part better, the butt state can be more stable, and rotation of the bolt can be better hindered. In addition, when the operating personnel is in the bolt fastening, because the bolt head can form the cooperation of stopping rotating with U template portion butt for the bolt can not take place to rotate because of radial moment of torsion's effect when fastening, and the operating personnel only need one hand just can screw the nut operation, need not worry again and take place to rotate in step at the in-process bolt head of screwing the nut, makes fastener's use operation more convenient, and then it is convenient to use simultaneously to promote the connection stability of roadway support.
In the above fastening device for roadway support connection, the rotation stopping plane is disposed opposite to and adjacent to the U-shaped plate portion. The anti-rotation plane is opposite to and adjacent to the U-shaped plate part of the upper clamping plate, so that the bolt head and the U-shaped plate part can form contact and butt as soon as possible, rotation of the bolt is better hindered, stability of bolt connection can be guaranteed, and fastening operation of the bolt is facilitated.
In the fastening device for roadway support connection, one side of the bolt head, which faces away from the U-shaped plate part, is arc-shaped. One side of the bolt head back to the U-shaped plate part is arc-shaped, so that the operator can be prevented from being scratched by sharp side edges of the bolt head, and the fastening device is safer to use.
In the above fastening device for roadway support connection, the bolt head is composed of a trapezoid part and an arched part, the trapezoid part is arranged on one side of the bolt head close to the U-shaped plate part, and the trapezoid long side of the trapezoid part is arranged adjacent to the U-shaped plate part. The bolt head of the fastening device for roadway support connection consists of the trapezoid part and the arched part, so that the edge of the bolt head consists of a regular arc line and a straight line, and the whole shape is similar to a horseshoe shape, thereby facilitating the manufacture of the bolt and reducing the production cost and the production time.
In the fastening device for roadway support connection, two waists of the trapezoid part are tangent to the arc tail ends of the arched parts respectively, and the bolt heads are of axisymmetric structures. The structure can further facilitate the manufacture of the bolt.
In the above fastening device for roadway support connection, the upper clamping plate is further provided with straight plate-shaped plate wing parts located at two sides of the U-shaped plate part, the plate wing parts and the U-shaped plate part are integrally formed, and the bolts are two and symmetrically distributed on the two plate wing parts. The U-shaped plate part that is the U type on the punch holder is convenient for form the space that holds two sections U shaped steel that wait to be connected with the lower plate between, can play the barrier effect to the rotation of bolt head simultaneously, and is the straight platelike board wing part and is convenient for set up the mounting hole to set up the bolt that is used for fastening connection, U-shaped plate part and board wing part integrated into one piece can strengthen the structural strength of punch holder.
In the above fastening device for roadway support connection, the lower clamping plate is in a straight plate shape, and a locking gasket is abutted between the nut on the bolt and the lower clamping plate. The anti-loose gasket can enable the fastening connection effect of the bolt to be better.
Compared with the prior art, the roadway support connection fastening device has the advantages that: the bolt head of the fastening device for roadway support connection can form a good limiting rotation stopping effect with the U-shaped plate part of the upper clamping plate, so that the stability of bolt connection can be guaranteed, the fastening operation of bolts is convenient, and the connection stability of roadway support is improved and the use is convenient. Meanwhile, the overall shape of the bolt head is similar to a horseshoe shape, so that the limiting and rotation stopping effects of the bolt head and the U-shaped plate part are better, injury of operators is avoided, the manufacture of the bolt is facilitated, and the production cost and the production time are reduced.
Drawings
Fig. 1 is a schematic structural view of the fastening device for roadway support connection.
Fig. 2 is a schematic plan view of the fastening device for roadway support connection.
Fig. 3 is a schematic view of a partial structure of a bolt of the fastening device for roadway support connection.
Fig. 4 is a schematic structural view of the fastening device for roadway support connection in use.
Fig. 5 is a cross-sectional view at A-A in fig. 4.
In the figure, 1, an upper clamping plate; 1a, U-shaped plate parts; 1b, plate wings; 2. a lower clamping plate; 3. a bolt; 3a, bolt heads; 3a11, a trapezoid part; 3a12, arcuate portions; 3a2, a rotation stopping plane; 3b, nuts; 4. a locking gasket; 5. u-shaped steel.
Detailed Description
The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.
1-5, including punch holder 1 and lower plate 2, be provided with the bolt 3 that is used for fastening connection between punch holder 1 and the lower plate 2, bolt 3 has bolt head 3a, punch holder 1 has the U template portion 1a that is the U type, the width of bolt head 3a increases gradually from the one side that keeps away from U template portion 1a to the one side that is close to U template portion 1a, so that bolt head 3a forms the rotation plane 3a2 that ends towards one side of U template portion 1a, this rotation plane 3a2 can with U template portion 1a butt is in order to form and ends the rotation cooperation. Further, the rotation stop plane 3a2 is disposed opposite and adjacent to the U-shaped plate portion 1 a. Further, the side of the bolt head 3a facing away from the U-shaped plate part 1a is arc-shaped. Specifically, the bolt head 3a is composed of a trapezoidal portion 3a11 and an arcuate portion 3a12, the trapezoidal portion 3a11 is provided on a side of the bolt head 3a near the U-shaped plate portion 1a, and a trapezoidal long side of the trapezoidal portion 3a11 is provided adjacent to the U-shaped plate portion 1 a. In this embodiment, it is preferable that both waists of the trapezoid part 3a11 are tangent to the arc end of the arcuate part 3a12, respectively, and the bolt head 3a has an axisymmetric structure. Preferably, the upper clamping plate 1 further has plate wing portions 1b located at two sides of the U-shaped plate portion 1a and having a straight plate shape, the plate wing portions 1b and the U-shaped plate portion 1a are integrally formed, and the bolts 3 are two and symmetrically distributed on the two plate wing portions 1 b. Preferably, the lower clamping plate 2 has a straight plate shape, and a locking washer 4 is abutted between a nut 3b on the screw of the bolt 3 and the lower clamping plate 2.
When the bolt 3 is used, the ends of two sections of U-shaped steel 5 to be connected are overlapped together, then the overlapped parts of the two sections of U-shaped steel 5 are placed between the upper clamping plate 1 and the lower clamping plate 2, the bolt 3 is used for fastening the upper clamping plate 1 and the lower clamping plate 2, so that the overlapped parts of the two sections of U-shaped steel 5 are clamped between the upper clamping plate 1 and the lower clamping plate 2, the fixed connection between the two sections of U-shaped steel 5 is realized, the width of the bolt head 3a is gradually increased from one side far away from the U-shaped plate part 1a to one side close to the U-shaped plate part 1a, the side surface of the bolt head 3a, facing the U-shaped plate part 1a, is provided with a rotation stopping plane 3a2, so that the length of the rotation stopping plane 3a2 is relatively long, when the bolt 3 is influenced by external force to rotate, the bolt 3a2 can well form contact and abutting joint with the side wall of the upper clamping plate 1 in different rotation directions, and the abutting state can be more stable, so that the further rotation of the bolt 3 is blocked, the connection stability of the bolt 3 is ensured, and the roadway connection stability can be improved. In addition, when the operator is in bolt fastening, because the bolt head 3a can be abutted with the U-shaped plate part 1a to form a rotation-stopping fit, the bolt 3 can not rotate under the action of radial torque during fastening, the operator can screw the nut 3b by only one hand, and the operator does not worry about synchronous rotation of the bolt head 3a during screwing the nut 3b, so that the use operation of the fastening device is more convenient. The bolt head 3a of the fastening device for roadway support connection can form a good limiting rotation stopping effect with the U-shaped plate part 1a of the upper clamping plate 1, not only can the stability of connection of the bolt 3 be ensured, but also the fastening operation of the bolt 3 is convenient, and the connection stability of roadway support is improved, and meanwhile, the use is convenient. Meanwhile, the overall shape of the bolt head 3a is similar to a horseshoe shape, so that the limiting and rotation stopping effects of the bolt head 3a and the U-shaped plate part 1a are better, injury of operators is avoided, the manufacture of the bolt is facilitated, and the production cost and the production time are reduced.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.
Although terms such as the upper clamping plate 1, the U-shaped plate portion 1a, the plate wing portion 1b, the lower clamping plate 2, the bolt 3, the bolt head 3a, the trapezoid portion 3a11, the arcuate portion, the nut 3b, the locking washer 4, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.
Claims (7)
1. The utility model provides a roadway support is connected and is used fastener, includes punch holder (1) and lower plate (2), be provided with bolt (3) that are used for fastening connection between punch holder (1) and lower plate (2), bolt (3) have bolt head (3 a), punch holder (1) have U template portion (1 a) that are the U type, its characterized in that, the width of bolt head (3 a) increases gradually from the one side that keeps away from U template portion (1 a) to the one side that is close to U template portion (1 a) to make bolt head (3 a) form one side towards U template portion (1 a) and end rotating plane (3 a 2), should end rotating plane (3 a 2) can with U template portion (1 a) butt is in order to form and ends rotating the cooperation.
2. The fastening device for roadway support connection according to claim 1, characterized in that the rotation stopping plane (3 a 2) is arranged opposite and adjacent to the U-shaped plate portion (1 a).
3. The fastening device for roadway support connection according to claim 1, characterized in that the side of the bolt head (3 a) facing away from the U-shaped plate (1 a) is arc-shaped.
4. A fastening device for roadway support connection according to claim 1, 2 or 3, characterized in that the bolt head (3 a) is composed of a trapezoid part (3 a 11) and an arcuate part (3 a 12), the trapezoid part (3 a 11) is provided on a side of the bolt head (3 a) close to the U-shaped plate part (1 a), and a trapezoid long side of the trapezoid part (3 a 11) is provided adjacent to the U-shaped plate part (1 a).
5. The fastening device for roadway support connection according to claim 4, wherein both waists of the trapezoid part (3 a 11) are tangent to the arc end of the arcuate part (3 a 12), respectively, and the bolt head (3 a) has an axisymmetric structure.
6. The fastening device for roadway support connection according to claim 4, wherein the upper clamping plate (1) is further provided with plate wing parts (1 b) which are positioned at two sides of the U-shaped plate part (1 a) and are in a straight plate shape, the plate wing parts (1 b) and the U-shaped plate part (1 a) are integrally formed, and the bolts (3) are two and are symmetrically distributed on the two plate wing parts (1 b).
7. The fastening device for roadway support connection according to claim 6, wherein the lower clamping plate (2) is in a straight plate shape, and a locking gasket (4) is abutted between a nut (3 b) on a screw of the bolt (3) and the lower clamping plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320594821.7U CN220133990U (en) | 2023-03-23 | 2023-03-23 | Fastening device for roadway support connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320594821.7U CN220133990U (en) | 2023-03-23 | 2023-03-23 | Fastening device for roadway support connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220133990U true CN220133990U (en) | 2023-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320594821.7U Active CN220133990U (en) | 2023-03-23 | 2023-03-23 | Fastening device for roadway support connection |
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| Country | Link |
|---|---|
| CN (1) | CN220133990U (en) |
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- 2023-03-23 CN CN202320594821.7U patent/CN220133990U/en active Active
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