CN210289812U - Anchor rod backing plate assembly for coal mine roadway tunneling - Google Patents
Anchor rod backing plate assembly for coal mine roadway tunneling Download PDFInfo
- Publication number
- CN210289812U CN210289812U CN201921418698.3U CN201921418698U CN210289812U CN 210289812 U CN210289812 U CN 210289812U CN 201921418698 U CN201921418698 U CN 201921418698U CN 210289812 U CN210289812 U CN 210289812U
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- backing plate
- hole
- fixing
- plate body
- 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.)
- Active
Links
Images
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses an anchor rod backing plate component for coal mine tunnel excavation, wherein a connecting hole is arranged on a backing plate body, a connecting rod passes through the connecting hole, and two end parts of the connecting rod are connected with adjacent connecting rods; the adjacent base plate assemblies are connected through a connecting rod; the connecting rod includes: the inner connecting rod penetrates through a connecting hole close to the middle part of the square area enclosed by the base plate body, and the outer connecting rod penetrates through a connecting hole far away from the middle part of the square area enclosed by the base plate body; the adjacent inner connecting rods are connected end to end; the adjacent outer connecting rods are connected end to end; the inner connecting rod and the outer connecting rod enclose two concentric support rings. This coal mine tunnel tunnelling uses stock backing plate subassembly, connects through the connecting rod between all backing plate bodies, makes the interconnect between whole tunnel inner wall through the backing plate body, forms netted support fixed knot to construct, has guaranteed the support intensity to the tunnel inner wall.
Description
Technical Field
The utility model relates to a coal mine tunnel tunnelling uses fixed subassembly structural design technical field of tunnel wall stock, especially relates to a coal mine tunnel tunnelling uses stock backing plate subassembly.
Background
Coal mine roadways are various passages drilled between the earth's surface and the ore body for carrying ore, ventilating, draining water, pedestrians, and various necessary preparation projects for newly cutting ore extracted by equipment.
In the process of tunneling the tunnel, the inner wall of the tunnel must be fixed in time. In the existing coal mine, an anchor rod is the most basic component of the coal mine roadway support, and the surrounding rocks of the roadway are reinforced together, so that the surrounding rocks support themselves. The anchor rod is used as a tension member penetrating into the stratum, one end of the anchor rod is connected with an engineering structure, the other end of the anchor rod penetrates into the stratum, the whole anchor rod is divided into a free section and an anchoring section, the free section is an area for transmitting the tension at the head of the anchor rod to an anchoring body, and the anchor rod is used for applying prestress to the anchor rod.
In order to ensure the supporting force of the anchor rod, the anchor rod backing plate is usually connected to fix the inner wall of the roadway at the end of the anchor rod extending out of the inner wall of the roadway. In the prior art, the anchor bolt backing plate has a single structure, no action part exists between the anchor bolt backing plate and the anchor bolt backing plate, the stability of the fixing action on the inner wall of the roadway is poor, and particularly, when a certain part of the roadway is damaged or a certain single anchor bolt is damaged, the fixing action on the part disappears, and safety accidents are easy to occur.
Therefore, in the prior art, the anchor bolt backing plate has a single structure, is weak in fixing effect on the inner wall of the roadway and is easy to cause safety accidents.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model discloses a main aim at provides one kind can make whole tunnel inner wall pass through the interconnect between the backing plate body, forms netted support fixed knot and constructs, has guaranteed to use stock backing plate subassembly to the colliery tunnelling of tunnel inner wall support intensity.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
an anchor backing plate assembly for coal mine roadway excavation, comprising: the backing plate comprises a backing plate body and connecting rods, wherein the backing plate body is provided with a connecting hole, the connecting rods penetrate through the connecting hole, and two end parts of the connecting rods are connected with adjacent connecting rods; the adjacent backing plate assemblies are connected through a connecting rod.
In a preferred embodiment, the opening direction of the connecting holes is parallel to the upper surface of the base plate body, two connecting holes are provided, and the two connecting holes are parallel to each other.
In a preferred embodiment, the number of the pad bodies of each pad assembly is four, and the four pad bodies are arranged in central symmetry and enclose a square area.
In a preferred embodiment, the connecting rod comprises: the inner connecting rod penetrates through a connecting hole close to the middle of a square area surrounded by the base plate body, and the outer connecting rod penetrates through a connecting hole far away from the middle of the square area surrounded by the base plate body.
In a preferred embodiment, adjacent said inner connecting rods are connected end to end; the adjacent outer connecting rods are connected end to end; the inner connecting rod and the outer connecting rod enclose two concentric support rings.
In a preferred embodiment, the overall structure of the base plate body is a square structure, the connecting holes are formed between two adjacent edges penetrating through the square structure, an anchor rod hole is formed in the center of the base plate body perpendicular to the base plate body, and the two connecting holes are formed in two sides of the anchor rod hole in parallel.
In a preferred embodiment, an included angle between two adjacent edges through which the connecting hole passes is a circular arc surface.
In a preferred embodiment, a plurality of reinforcing ribs are provided between the anchor rod hole in the center of the pad body and the edge of the pad body.
In a preferred embodiment, the connecting rod is divided into: the bending connecting rod and the direct connecting rod; the inner connecting rods are all direct connecting rods; the outer connecting rod of each backing plate component is a bent connecting rod or a direct connecting rod, and the outer connecting rods of the backing plate components are adjacent to the bent connecting rods.
In a preferred embodiment, the bent connecting rod includes: the first fixing part, the first penetrating part and the first supporting part; the first fixing part and the first inserting part are respectively fixedly connected to two ends of the first supporting part, the first fixing part is of a disc-shaped structure, and a first inserting hole is formed in parallel with the disc; at the center of the disc, a first fixing hole is formed in the position perpendicular to the surface of the disc, a first inserting portion adjacent to the bending connecting rod penetrates through the first fixing hole, penetrates through the first inserting portion, is provided with a first limiting hole, and is fixedly connected with the first limiting hole through a fixing bolt penetrating through the first fixing hole and the first limiting hole.
In a preferred embodiment, the upper surfaces of the first fixing portion and the first insertion portion overlap with the lower bottom surface of the first support portion.
In a preferred embodiment, the direct connecting rod is a straight rod structure, and comprises: the second fixing part, the second penetrating part and the second supporting part; the second fixing part and the second penetrating part are respectively fixedly connected to two ends of the second supporting part, the second fixing part is also in a disc-shaped structure, and a second penetrating hole is formed in parallel with the disc; and a second fixing hole is formed in the center of the disc and is perpendicular to the surface of the disc, a second penetrating part adjacent to the direct connecting rod penetrates through the second fixing hole, penetrates through the second penetrating part and is provided with a second limiting hole, and the second fixing hole is fixedly connected with a fixing bolt of the second limiting hole through the second penetrating part.
In a preferred embodiment, lower surfaces of the second fixing portion and the second insertion portion overlap with a lower bottom surface of the second support portion.
In a preferred embodiment, between adjacent backing plate assemblies, the lower surface of the second fixing portion of the direct connecting rod is correspondingly arranged at the upper surface of the first fixing portion of the bent connecting rod, and the two adjacent backing plate assemblies are connected through a fixing bolt penetrating through the first fixing portion and the second fixing portion.
The utility model discloses a coal mine tunnel tunnelling uses stock backing plate subassembly has following beneficial effect:
the anchor rod backing plate assembly is used for coal mine roadway excavation, a connecting hole is formed in the backing plate body, the connecting rod penetrates through the connecting hole, and two end parts of the connecting rod are connected with adjacent connecting rods; the adjacent base plate assemblies are connected through a connecting rod; the opening direction of the connecting holes is parallel to the upper surface of the base plate body, two connecting holes are arranged, and the two connecting holes are parallel to each other; the base plate body of every base plate subassembly sets up four, and four the base plate body is central symmetry and sets up, encloses into square region. The connecting rod includes: the inner connecting rod penetrates through a connecting hole close to the middle part of the square area enclosed by the base plate body, and the outer connecting rod penetrates through a connecting hole far away from the middle part of the square area enclosed by the base plate body; the adjacent inner connecting rods are connected end to end; the adjacent outer connecting rods are connected end to end; the inner connecting rod and the outer connecting rod enclose two concentric support rings. The anchor rod base plate solves the problems that in the prior art, the anchor rod base plates work independently and are not dependent on each other, when one base plate body is damaged or the geology of one anchor rod position is damaged and falls off, the base plate body is damaged by sliding off and directly falls off, and safety accidents are easy to happen; therefore, the defects of independence between anchor rod backing plates and insufficient acting force and stability exist in the prior art. This coal mine tunnel tunnelling uses stock backing plate subassembly, connects through the connecting rod between all backing plate bodies, makes the interconnect between whole tunnel inner wall through the backing plate body, forms netted support fixed knot to construct, has guaranteed the support intensity to the tunnel inner wall.
Drawings
Fig. 1 is a schematic structural view of an anchor backing plate assembly for use in coal mine roadway driving according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural view of a combination of two anchor plate assemblies for use in coal mine roadway excavation according to an embodiment of the present disclosure;
fig. 3 is a schematic structural view of a pad body of an anchor rod pad assembly for coal mine roadway driving according to an embodiment of the present disclosure;
fig. 4 is a cross-sectional view of the pad body of fig. 3 shown in use in a coal mine roadway driving anchor rod pad assembly according to one embodiment of the present disclosure;
fig. 5 is a schematic structural view of a bent connecting rod of an anchor plate assembly for coal mine roadway driving according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a direct connecting rod of a rock bolt backing plate assembly for coal mine roadway excavation according to an embodiment of the disclosure.
[ description of main reference symbols ]
1. The base plate comprises a base plate body 11, connecting holes 12, anchor rod holes 13 and reinforcing rib plates;
2. a connecting rod 21, an inner connecting rod 22 and an outer connecting rod;
201. the connecting rod bending device comprises a bending connecting rod 211, a first fixing part 212, a first inserting part 213, a first supporting part 214, a first inserting hole 215, a first fixing hole 216 and a first limiting hole;
202. the direct connection rod 221, the second fixing portion 222, the second insertion portion 223, the second supporting portion 224, the second insertion hole 225, the second fixing hole 226, and the second limiting hole.
Detailed Description
The following combines the drawings and the embodiment of the utility model discloses a further detailed explanation is made to the anchor rod backing plate subassembly is used in the excavation of coal mine tunnel.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
For ease of description, spatially relative terms such as "above … …"),
"above … …", "on … …", "above", and the like, are used to describe one device or feature as it appears in the figures in relation to another device or feature in spatial position. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1, 2, 3, 4, 5 and 6, the coal mine tunnelling uses a bolt backing plate assembly comprising: the backing plate body 1 mainly has the connecting function with an anchor rod and plays a main role in fixing and supporting the roadway wall; the backing plate body 1 is connected, so that the surface of the whole roadway wall is fixed by the backing plate component to form a connecting rod 2 with a net structure. A connecting hole 11 for connecting the connecting rods 2 is formed through the base plate body 1, the connecting rods 2 penetrate through the connecting hole 11, two end parts of each connecting rod 2 are connected with the adjacent connecting rods 2, and the base plate body 1 is connected through the connecting rods 2; connect through connecting rod 2 between the adjacent backing plate subassembly to make all backing plate bodies 1 in whole tunnel connect, form netted backing plate subassembly at the tunnel inner wall, guarantee the fixed strength to the tunnel inner wall.
In order to ensure the larger bearing capacity of the connecting holes 11 and avoid the damage to the connecting holes 11 when the connecting rods are extruded by a roadway, the opening direction of the connecting holes 11 is parallel to the upper surface of the base plate body 1, two connecting holes 11 are arranged, and the two connecting holes 11 are parallel to each other; connecting hole 11 is seted up and to be close to the upper surface position of backing plate body 1 at backing plate body 1, perhaps directly sets up the upper surface department to backing plate body 1, and the size of increase connecting hole 11 lower part, and then increase backing plate body 1 to the bearing capacity of connecting hole, and then avoid the damage to backing plate body 1.
In order to facilitate the arrangement of the connecting holes 11 (the vertical angle is easy to control and detect), four backing plate bodies 1 of each backing plate assembly are arranged, and the four backing plate bodies 1 are arranged in central symmetry and surround a square area; so that the connecting rods 2 are arranged perpendicular to each other.
In order to increase the density of the connecting rods 2, the supporting stability of the inner wall of the roadway is further ensured. The connecting rod 2 includes: the inner connecting rod 21 penetrates through a connecting hole 11 close to the middle of a square area defined by the base plate body 1 to define a supporting ring with an annular structure; the outer connecting rods 22 penetrate through the connecting holes 11 far away from the middle part of the square area surrounded by the cushion plate body 1, the outer connecting rods 22 also surround a support ring in a ring structure, and are connected with adjacent cushion plate assemblies at the connecting positions of the outer connecting rods 22, so that all the cushion plate assemblies are connected together.
Namely: the adjacent inner connecting rods 21 are connected end to end; the adjacent outer connecting rods 22 are connected end to end; the inner connecting rod 21 and the outer connecting rod 22 enclose two concentric support rings.
Preferably, in order to facilitate the processing and manufacturing of the pad body 1, the overall structure of the pad body 1 is a square structure. The connecting holes 11 are formed between two adjacent edges penetrating through the square structure, the anchor rod hole 12 is formed in the center of the backing plate body 1 perpendicular to the backing plate body 1, the two connecting holes 11 are arranged on two sides of the anchor rod hole 12 in parallel, and the symmetrical structure reduces the requirement on processing and is convenient for workers to install.
In order to avoid deformation caused by excessive pressure at the exposed corners of the backing plate body 1 and further stress concentration to damage the whole backing plate body 1, preferably, the included angle between two adjacent edges through which the connecting hole 11 passes is an arc surface. The pressure that backing plate body 1 bore is reduced in the dispersion, and then guarantees backing plate body 1's life.
In order to further enhance the bearing capacity of the backing plate body 1, a plurality of reinforcing ribs 13 are arranged between the anchor rod hole 12 in the center of the backing plate body 1 and the edge of the backing plate body 1, preferably, the cross section of each reinforcing rib 13 is of a semi-circular arc structure, and the reinforcing ribs 13 and the backing plate body 1 are integrally formed, so that the defect of increasing the processing procedures is avoided.
In order to realize the connection between the adjacent backing plate assemblies, the interference is avoided, the integrity of the supporting structure of the inner wall of the whole roadway is ensured, and the supporting effect is further ensured. The connecting rod 2 is divided into: a bent connecting rod 201 and a straight connecting rod 202; the inner connecting rods 21 are all straight connecting rods 202; the outer connecting rod 22 of each backing plate assembly is a bent connecting rod 201 or a straight connecting rod 202, and the outer connecting rods 22 of adjacent backing plate assemblies respectively use the straight connecting rod 202 and the bent connecting rod 201.
In order to secure the connection between the bent connection rod 201 and the straight connection rod 202, the bent connection rod 201 includes: a first fixing portion 211 for connecting and fixing; a first insertion portion 212 inserted into the first fixing portion 211 of the adjacent link 2; and a first supporting part 213 connecting the first fixing part 211 and the first inserting part 212 and supporting the inner wall of the tunnel. The first fixing portion 211 and the first insertion portion 212 are respectively fixedly connected to two ends of the first supporting portion 213. In order to facilitate the connection between the first fixing portion 211 and the first inserting portion 212, especially to ensure the strength of the first fixing portion 211, and to facilitate the connection with the second fixing portion 221, the first fixing portion 211 is a disc-shaped structure, and a first inserting hole 214 is formed in parallel with the disc; a first fixing hole 215 is formed in the center of the disc and perpendicular to the surface of the disc, a first inserting portion 212 of each adjacent bent connecting rod 201 penetrates through the first fixing hole 215, penetrates through the first inserting portion 212, is formed with a first limiting hole 216, and is fixedly connected with the first limiting hole 216 through a fixing bolt penetrating through the first fixing hole 215; preferably, the two end parts of the first limiting hole 216 are horn-shaped, and the first limiting hole 216 is long-strip-shaped, so that the connecting rod 2 has a certain telescopic space between the backing plate bodies 1, the acting force of the connecting rod 2 on the backing plate bodies 1 is reduced, and the service life of the backing plate bodies 1 is ensured.
In order to ensure the connection with the straight connecting rod 202, the upper surfaces of the first fixing portion 211 and the first insertion portion 212 coincide with the lower bottom surface of the first supporting portion 213. The second fixing portion 221 of the direct connection rod is attached to the upper side of the first fixing portion 211, and the first fixing portion 211, the second fixing portion 221, the first insertion portion 212, and the second insertion portion 222 are connected together by one bolt.
The adaptation is buckled connecting rod 201, and this directly connects pole 202 to be the straight-bar structure, and directly connects pole 202 to include: a second fixing part 221 for connecting and fixing; a second insertion portion 222 inserted into the second fixing portion 221 of the adjacent link 2; and a second support part 223 connecting the second fixing part 221 and the second insertion part 222 and supporting the inner wall of the tunnel. The second fixing portion 221 and the second insertion portion 222 are fixedly connected to both ends of the second supporting portion 223, respectively. In order to be connected to the first fixing portion 211, the second fixing portion 221 is also a disc-shaped structure, and a second insertion hole 224 is formed parallel to the disc. In the center of the disc, a second fixing hole 225 is formed perpendicular to the surface of the disc, a second inserting portion 222 of the adjacent direct connecting rod 202 penetrates through the second fixing hole 225, a second limiting hole 226 is formed by penetrating through the second inserting portion 222, and the second fixing hole 225 and the second limiting hole 226) are used for fixing and connecting a bolt. Similarly, the two ends of the preferred second limiting hole 226 are horn-shaped, and the second limiting hole 226 is long-strip-shaped, so that the connecting rod 2 has a certain telescopic space between the backing plate bodies 1, the acting force of the connecting rod 2 on the backing plate bodies 1 is reduced, and the service life of the backing plate bodies 1 is ensured.
In order to adapt to the connection between the first fixing portions 212, the lower surfaces of the second fixing portions 221 and the second insertion portions 222 are overlapped with the lower bottom surface of the second supporting portion 223.
Between adjacent backing plate assemblies, the lower surface of the second fixing portion 221 of the direct connecting rod 202 is correspondingly arranged at the upper surface of the first fixing portion 211 of the bending connecting rod 201, and is connected through a fixing bolt penetrating through the first fixing portion 211 and the second fixing portion 221. The connection of all backing plate assemblies on the inner wall of the whole roadway is realized, so that the fixing points of the whole roadway are interdependent, and the stronger supporting effect on the inner wall of the roadway is ensured.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (8)
1. The utility model provides an anchor rod backing plate subassembly is used in excavation of coal mine tunnel which characterized in that includes: the cushion plate comprises a cushion plate body (1) and connecting rods (2), wherein the cushion plate body (1) is provided with a connecting hole (11), the connecting rods (2) penetrate through the connecting hole (11), and two end parts of each connecting rod (2) are connected with the adjacent connecting rods (2); the adjacent backing plate components are connected through a connecting rod (2);
the hole opening direction of the connecting holes (11) is parallel to the upper surface of the base plate body (1), two connecting holes (11) are arranged, and the two connecting holes (11) are parallel to each other;
the number of the base plate bodies (1) of each base plate assembly is four, and the four base plate bodies (1) are arranged in a central symmetry manner and surround a square area;
the connecting rod (2) comprises: the inner connecting rod (21) penetrates through a connecting hole (11) close to the middle of a square area defined by the backing plate body (1), and the outer connecting rod (22) penetrates through a connecting hole (11) far away from the middle of the square area defined by the backing plate body (1);
the adjacent inner connecting rods (21) are connected end to end; the adjacent outer connecting rods (22) are connected end to end; the inner connecting rod (21) and the outer connecting rod (22) enclose two concentric supporting rings.
2. The anchor rod backing plate assembly for coal mine roadway excavation according to claim 1, wherein the overall structure of the backing plate body (1) is a square structure, the connecting hole (11) is formed between two adjacent edges penetrating through the square structure, an anchor rod hole (12) is formed in the center of the backing plate body (1) perpendicular to the backing plate body (1), and the two connecting holes (11) are formed in two sides of the anchor rod hole (12) in parallel.
3. The anchor rod backing plate assembly for coal mine tunneling according to claim 2, wherein an included angle between two adjacent edges through which the connecting hole (11) passes is a circular arc surface.
4. The anchor rod backing plate assembly for coal mine tunneling according to claim 2, wherein a plurality of reinforcing ribs (13) are provided between the anchor rod hole (12) in the center of the backing plate body (1) and the edge of the backing plate body (1).
5. The anchor plate assembly for coal mine tunneling according to claim 1, wherein the connecting rod (2) is divided into: a bending connecting rod (201) and a direct connecting rod (202); the inner connecting rods (21) are all direct connecting rods (202); the outer connecting rod (22) of each backing plate component is a bent connecting rod (201) or a direct connecting rod (202), and the outer connecting rods (22) of the adjacent backing plate components respectively use the direct connecting rod (202) and the bent connecting rod (201).
6. The anchor plate assembly for coal mine tunnelling according to claim 5, wherein the bent connecting rod (201) comprises: a first fixing part (211), a first insertion part (212) and a first supporting part (213); the first fixing part (211) and the first inserting part (212) are respectively and fixedly connected to two ends of the first supporting part (213), the first fixing part (211) is of a disc-shaped structure, and a first inserting hole (214) is formed in parallel with the disc; a first fixing hole (215) is formed in the center of the disc and perpendicular to the surface of the disc, a first inserting portion (212) adjacent to the bent connecting rod (201) penetrates through the first fixing hole (215), a first limiting hole (216) penetrates through the first inserting portion (212), and the first fixing hole (215) and the first limiting hole (216) are fixedly connected through a fixing bolt penetrating through the first fixing hole (215) and the first limiting hole (216);
the upper surfaces of the first fixing part (211) and the first inserting part (212) are superposed with the lower bottom surface of the first supporting part (213).
7. The anchor plate assembly for coal mine tunnelling according to claim 6, wherein the direct connecting rod (202) is of a straight rod structure, and the direct connecting rod (202) comprises: a second fixing part (221), a second insertion part (222), and a second support part (223); the second fixing part (221) and the second inserting part (222) are respectively fixedly connected to two ends of the second supporting part (223), the second fixing part (221) is also in a disc-shaped structure, and a second inserting hole (224) is formed in parallel with the disc; a second fixing hole (225) is formed in the center of the disc and perpendicular to the surface of the disc, a second inserting portion (222) of the adjacent direct connecting rod (202) penetrates through the second fixing hole (225), a second limiting hole (226) penetrates through the second inserting portion (222), and the second inserting portion and the second limiting hole are fixedly connected through a fixing bolt penetrating through the second fixing hole (225) and the second limiting hole (226);
the lower surfaces of the second fixing part (221) and the second insertion part (222) are overlapped with the lower bottom surface of the second supporting part (223).
8. The anchor plate assembly for coal mine roadway excavation according to claim 7, wherein between adjacent plate assemblies, the lower surface of the second fixing portion (221) of the direct connecting rod (202) is correspondingly arranged at the upper surface of the first fixing portion (211) of the bent connecting rod (201), and the first fixing portion (211) and the second fixing portion (221) are connected through a fixing bolt penetrating through the first fixing portion (211) and the second fixing portion (221).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921418698.3U CN210289812U (en) | 2019-08-28 | 2019-08-28 | Anchor rod backing plate assembly for coal mine roadway tunneling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921418698.3U CN210289812U (en) | 2019-08-28 | 2019-08-28 | Anchor rod backing plate assembly for coal mine roadway tunneling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210289812U true CN210289812U (en) | 2020-04-10 |
Family
ID=70063199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921418698.3U Active CN210289812U (en) | 2019-08-28 | 2019-08-28 | Anchor rod backing plate assembly for coal mine roadway tunneling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210289812U (en) |
-
2019
- 2019-08-28 CN CN201921418698.3U patent/CN210289812U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106014458B (en) | A kind of high inclination-angle extremely soft seam stope drift active workings anchor net abnormity canopy graded supporting technology | |
| CN209941910U (en) | Connecting joint of steel beam and steel reinforced concrete column | |
| CN210289812U (en) | Anchor rod backing plate assembly for coal mine roadway tunneling | |
| CN107090839A (en) | Composite space landslide retaining structure | |
| CN106150526A (en) | A kind of roadway support device | |
| CN106930779B (en) | A kind of special-shaped canopy method for protecting support of the micro- arch of high-dipping three soft coal layer re-exploration laneway battered leg | |
| CN106481952A (en) | Support | |
| CN103603682B (en) | A kind of top plate supporting method being applicable to slice drift cemented filling mining | |
| KR20160033442A (en) | Wirenet assembly for being adhered on rock and constructing method thereof | |
| CN111088805B (en) | Integrated assembly type supporting device and supporting method thereof | |
| KR101431974B1 (en) | Vinyl house structuring system | |
| CN104790991A (en) | Mining roadway surrounding rock strong and long top anchoring technology | |
| KR101528248B1 (en) | Tetragonal lattice girders and reinforce method for cutting surface of tunnel using the same | |
| CN205277468U (en) | Novel yielding bolt | |
| CN205101011U (en) | Stock anchor rope combination supporting construction | |
| CN104612731B (en) | Detachable adaptive multistage increases resistance high-strength hollow grouting anchor pile and construction method thereof | |
| CN203891905U (en) | Leg-free shed support | |
| CN208816143U (en) | A kind of colliery tunnel support structure | |
| CN207959254U (en) | A kind of general mounting seat | |
| CN205400766U (en) | Tunnel pre -buried spout anchor leg extension connecting elements | |
| CN108019221B (en) | Meizoseismal area Cross-fault leveling tunnel-liner flexible telescopic joint device and tunnel lining structure | |
| CN113339029B (en) | Anchor cable and channel steel beam cross-connection combined integral roof supporting structure and method through annular connecting disc | |
| CN110158498A (en) | A kind of elasticity passive protection net pillar construction and construction method | |
| CN201554473U (en) | Supporting device for coal mine tunnel cross breaking layer | |
| CN219826884U (en) | Mining tunnel pre-buried anchor rod |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |