CN212563331U - A bolt assembly that is arranged in colliery gob entry concrete body - Google Patents
A bolt assembly that is arranged in colliery gob entry concrete body Download PDFInfo
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- CN212563331U CN212563331U CN202021226612.XU CN202021226612U CN212563331U CN 212563331 U CN212563331 U CN 212563331U CN 202021226612 U CN202021226612 U CN 202021226612U CN 212563331 U CN212563331 U CN 212563331U
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- bolt
- concrete wall
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- sleeve
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Abstract
The utility model discloses a bolt assembly used in concrete in a coal mine gob-side entry retaining, which comprises a sleeve buried in a concrete wall, wherein a bolt is arranged in the sleeve in a penetrating way, and the concrete wall is positioned between a goaf and a crossheading; the length of the bolt is greater than that of the sleeve, the front end of the bolt is a threaded end, the rear end of the bolt is a bolt head, the rear end of the bolt head is also provided with a dismounting nut, and the dismounting nut is used for being clamped by a clamp, so that the threaded end of the bolt is screwed in/out of a preset nut positioned on the other side of the concrete wall to realize the fixation/dismounting of the bolt; the utility model discloses a bury the sleeve pipe underground in the concrete wall body to at the intraductal bolt of installing additional of cover, make the screw thread end of bolt and bolt head be located concrete wall body's both sides respectively, and set up the dismouting nut in the rear end of bolt head, this dismouting nut can supply the operative employee to use the anchor clamps centre gripping, realizes the fastening and the dismantlement of bolt, realizes the reuse of this bolt, reduces concrete wall body's construction cost.
Description
Technical Field
The utility model belongs to the technical field of coal mine tunnel equipment, especially, relate to a bolt assembly that is arranged in colliery gob entry concrete body.
Background
The gob-side entry retaining is reserved at the original crossheading position on the edge of a coal face gob-side of a coal mine and is called gob-side entry retaining. When beginning to make gob entry in the pit, need to use the bolt as the lacing wire in the concrete wall body to increase the intensity of concrete wall body.
The common operation method is to embed the bolts directly into the concrete wall, but the construction method increases the use amount of the bolts, and further increases the construction cost of the concrete wall.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a bolt assembly that is arranged in colliery gob entry concrete for the bolt as the lacing wire has detachability, reuse, and then reduces concrete wall's construction cost.
The utility model adopts the following technical scheme: a bolt assembly used in a concrete body in a coal mine gob-side entry retaining comprises a sleeve which is buried in a concrete wall body, wherein a bolt penetrates through the sleeve; wherein the concrete wall is positioned between the goaf and the gate;
the length of the bolt is larger than that of the sleeve, the front end of the bolt is a threaded end, the rear end of the bolt is a bolt head, the rear end of the bolt head is further provided with a dismounting nut, the dismounting nut is used for clamping a clamp, and the threaded end of the bolt is screwed into/out of a preset nut on the other side of the concrete wall so as to fix/dismount the bolt.
Further, the outer diameter of the dismounting nut is smaller than that of the bolt head.
Further, the dismounting nut and the bolt head are coaxially arranged.
Further, the outer diameter of the bolt head is larger than the outer diameter of the sleeve.
Furthermore, the sleeve is horizontally embedded in the concrete wall body.
The utility model has the advantages that: the utility model discloses a bury the sleeve pipe underground in the concrete wall body to at the intraductal bolt of installing additional of cover, make the screw thread end of bolt and bolt head be located concrete wall body's both sides respectively, and set up the dismouting nut in the rear end of bolt head, this dismouting nut can supply the operative employee to use the anchor clamps centre gripping, realizes the fastening and the dismantlement of bolt, realizes the reuse of this bolt, reduces concrete wall body's construction cost.
Drawings
Fig. 1 is a schematic structural diagram of a bolt assembly used in a concrete body in a coal mine gob-side entry retaining according to an embodiment of the present invention;
fig. 2 is the embodiment of the utility model provides a use state diagram that is arranged in colliery gob entry concrete body's bolt assembly.
Wherein: 1. a gob; 2. a gate way; 3. a concrete wall; 4. a bolt assembly; 41. a sleeve; 42. a bolt; bolt head 43; 44. and (6) disassembling and assembling the screw cap.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model discloses a bolt assembly used in concrete body of coal mine gob-side entry retaining, as shown in figure 2, comprising a sleeve 41 buried in a concrete wall 3, wherein a bolt 42 is arranged in the sleeve 41; the concrete wall is located between the goaf and the gate way, the length of the bolt 42 is greater than that of the sleeve 41, the front end of the bolt is a threaded end, the rear end of the bolt is a bolt head 43, the rear end of the bolt head 43 is further provided with a dismounting nut 44, and the dismounting nut 44 is used for clamping a clamp, so that the threaded end of the bolt 42 is screwed into/out of a preset nut located on the other side of the concrete wall 3, and the bolt 42 is fixed/dismounted.
The utility model discloses a bury the sleeve pipe underground in the concrete wall body to at the intraductal bolt of installing additional of cover, make the screw thread end of bolt and bolt head be located concrete wall body's both sides respectively, and set up the dismouting nut in the rear end of bolt head, this dismouting nut can supply the operative employee to use the anchor clamps centre gripping, realizes the fastening and the dismantlement of bolt, realizes the reuse of this bolt, reduces concrete wall body's construction cost.
In the present embodiment, the sleeve and the bolt 42 embedded in the concrete wall 3 function as a concrete tie bar, and the concrete wall 3 is thick, and the bolt 42 is long in length, which results in high cost. In addition, when the bolt 42 is installed, an operator does not need to enter the goaf, only a clamp (such as a wrench) is needed to clamp the dismounting nut 44, and dismounting of the bolt 42 can be achieved, so that safety of the operator during working is improved. In practical use, the diameter of the sleeve 41 is slightly larger than that of the bolt 42, so that the bolt 42 can be smoothly drawn out of the sleeve 41 during disassembly. The length of the bolt 42 is greater than that of the sleeve 41, so that the bolt 42 can be ensured to extend out of the front end of the sleeve 41 and further screwed into/out of the preset nut on the other side of the concrete wall 3.
In this embodiment, the external diameter of dismouting nut 44 slightly is less than the external diameter of bolt head 43, can be when using spanner centre gripping dismouting nut 44, and the side of spanner can also help the location of spanner on propping the terminal surface of bolt head 43, prevents that the spanner from deviating from the dismouting nut, promotes dismantlement efficiency.
Specifically, dismouting nut 44 sets up with bolt head 43 is coaxial, and then guarantees that dismouting nut 44 is after receiving the power of spanner, and the atress of each position is balanced, prevents that dismouting nut 44 from because the unbalanced stress drops.
In the present embodiment, the outer diameter of the bolt head 43 is larger than the outer diameter of the sleeve 41, so that when the bolt is installed, the bolt head 43 can be ensured to be located outside the sleeve 41, and the bolt head 43 of the bolt 42 is prevented from extending into the sleeve 41 to affect the construction operation.
In a specific construction process, the sleeve 41 is horizontally embedded in the concrete wall 3. The plurality of sleeves 41 are horizontally and parallelly embedded in the concrete wall 3, so that the function of a lacing wire is realized.
The utility model discloses a use does:
as shown in fig. 2, when constructing the concrete wall 3 in the gob-side entry, it is necessary to embed the bolt assembly 4 in the concrete wall 3. One side of concrete wall body 3 is collecting space area 1, and the opposite side is cistron 2, and then the one end of bolt assembly 4 is located collecting space area 1, and the other end is located cistron 2 to, when doing, because the handle hole is difficult to get into collecting space area, can only be located cistron 2, at this moment, can use spanner centre gripping dismouting nut 44 to rotate bolt 42, make the front end screw in of bolt 42 be located the preset nut in collecting space area, realize bolt 42's fixed. After the concrete wall 3 is solidified and the bolt needs to be disassembled, an operator only needs to clamp the disassembling nut 44 in the crossheading 2 by using a wrench to rotate reversely, and after the bolt 42 is screwed out of the preset nut, the bolt 42 is pulled out.
Claims (5)
1. A bolt assembly used in a concrete body in a coal mine gob-side entry retaining is characterized by comprising a sleeve (41) buried in a concrete wall body (3), wherein a bolt (42) penetrates through the interior of the sleeve (41); wherein the concrete wall (3) is positioned between the goaf (1) and the gate (2);
the length of bolt (42) is greater than the length of sleeve pipe (41), and its front end is threaded end, rear end is bolt head (43), the rear end of bolt head (43) still is provided with dismouting nut (44), dismouting nut (44) are used for supplying anchor clamps centre gripping, make the threaded end screw in of bolt (42)/screw out be located concrete wall (3) opposite side preset in the nut to realize fixing/dismantling of bolt (42).
2. A bolt assembly for use in a concrete body in a coal mine gob-side entry as claimed in claim 1 wherein said break-away nut (44) has an outer diameter less than the outer diameter of said bolt head (43).
3. A bolt assembly for use in a concrete body in a coal mine gob-side entry as claimed in claim 2 wherein said break-away nut (44) is disposed coaxially with said bolt head (43).
4. A bolt assembly for use in a concrete body in a coal mine gob-side entry as claimed in claim 2 or claim 3 wherein the outer diameter of said bolt head (43) is greater than the outer diameter of said spigot (41).
5. A bolt assembly for use in a concrete body in a coal mine gob-side entry as set forth in claim 4 wherein said sleeve (41) is embedded horizontally in said concrete wall (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021226612.XU CN212563331U (en) | 2020-06-29 | 2020-06-29 | A bolt assembly that is arranged in colliery gob entry concrete body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021226612.XU CN212563331U (en) | 2020-06-29 | 2020-06-29 | A bolt assembly that is arranged in colliery gob entry concrete body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212563331U true CN212563331U (en) | 2021-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021226612.XU Active CN212563331U (en) | 2020-06-29 | 2020-06-29 | A bolt assembly that is arranged in colliery gob entry concrete body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212563331U (en) |
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2020
- 2020-06-29 CN CN202021226612.XU patent/CN212563331U/en active Active
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