Roof supporting device for underground mining of iron ore

Abstract

The utility model discloses an iron ore underground mining roof supporting device, which relates to the technical field of iron ore mining and comprises a plurality of supporting bodies distributed along the longitudinal depth of a roadway. The steel wire meshes are located between every two adjacent supporting bodies and connected with the adjacent supporting bodies; the supporting body comprises two positioning grooves which are formed in the two sides of the bottom of a roadway. One ends of the two lower supporting plates extend into the two positioning grooves respectively, and the other ends of the two lower supporting plates are provided with L-shaped lower connecting bodies; l-shaped upper connecting bodies are arranged at the two ends of the upper supporting plate correspondingly; the two clamping plates are both in a C shape and are fixedly connected to the upper connecting body and the lower connecting body at the corresponding positions respectively, and the first connecting body and the second connecting body are sleeved with the clamping plates in a clamped mode. The utility model has the advantages of convenience in use, high safety, strong trafficability and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of iron ore mining, in particular to a roof support device for underground iron ore mining. Background Art

[0002] During the mining process of iron mines, for the sake of safety, support devices are installed at places where tunnels are prone to collapse. The support devices can increase the support strength of the iron mine tunnels and avoid collapse of the tunnel top. Therefore, safety can be improved by installing support devices.

[0003] For example, patent application number CN202222738869.9 discloses an underground tunnel crushing support device. When carrying out support work, this patent adopts support construction in advance according to the crushing condition of the underground tunnel 1. Different types of crushing adopt different types of support methods, one tunnel has one policy, which improves the stability and strength of the underground tunnel 1 and strengthens the primary support operation. For the surrounding rock of the underground tunnel 1 with low hardness, severe crushing, complex structure and poor stability, the effect and quality of the primary support are particularly critical. According to the stability and structure of the ore rock revealed by the approach excavation, The rocks of the underground tunnel 1 are graded, and the tunnel support grade is determined. The composite spraying layer 2 is supported accordingly. The composite spraying layer 2 is a combination of plain spraying, anchor spraying, and anchor mesh spraying. The support strength is ensured through reasonable graded support. For the case where the thickness of the broken layer is large and the ordinary anchor rod 1 cannot play a role, the first grouting anchor rod 4 is used for support. For the case where the primary support is partially damaged during the mining operation, the secondary support is used for timely remediation. The key is timeliness. By strengthening organization and coordination, timely remediation of the damaged part is ensured to prevent the further aggravation of the damage.

[0004] The support device in the prior art uses anchor rods to fix the support to the wall, but this method requires drilling holes in the wall. During the drilling process, the wall will be damaged, increasing the probability of collapse. The closer the holes are drilled, the greater the safety risk of collapse. In addition, the prior art also uses hydraulic cylinders, piston rods, support plates, and frames to support the support. This method also reduces the passability of the entire tunnel, making it impossible for vehicles to pass through. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a roof support device for underground iron ore mining, so as to solve the problem that the tunnel support structure in the prior art described in the background technology has a large safety risk and reduces the passability of the tunnel.

[0006] To achieve the above purpose, the utility model provides the following technical solutions: a roof support device for underground iron ore mining, comprising

[0007] Several supporting bodies are distributed along the depth of the tunnel;

[0008] A plurality of steel wire meshes are respectively located between two adjacent supporting bodies and connected to the adjacent supporting bodies;

[0009] The support body includes

[0010] Two positioning grooves are arranged on both sides of the bottom of the tunnel;

[0011] Two lower support plates, one end of which extends into the two positioning grooves respectively and the other end of which has an L-shaped lower connector;

[0012] An upper support plate, with L-shaped upper connectors at both ends;

[0013] The two clamping plates are both C-shaped and are respectively fixedly connected to the upper connecting body and the lower connecting body at corresponding positions, and the clamping plates are clamped on the first connecting body and the second connecting body.

[0014] Preferably: the upper connector has a plurality of upper positioning holes penetrating the upper connector, the positions on the lower connector corresponding to the upper positioning holes have lower positioning holes penetrating the lower connector, the positions on the card plate corresponding to the upper positioning holes and the lower positioning holes have through holes respectively, and the through holes have bolts penetrating the through holes, the upper positioning holes, the lower positioning holes and connected to the nuts.

[0015] Preferably, two or more adjacent supporting bodies are fixedly connected by extending the same clamping plate.

[0016] Preferably: a plurality of positioning rings are sleeved on the wire mesh at positions corresponding to the upper support plate and the lower support plate, the positioning rings have a plurality of screws passing through the positioning rings, the upper support plate and the lower support plate have threaded holes at positions corresponding to the screws, and the screws are threadedly connected to the threaded holes at the corresponding positions.

[0017] The beneficial effects of adopting the above technical solution are:

[0018] The present application can position the lower support plate through the positioning groove, and the clamping plate can connect the upper connector and the lower connector to achieve a fixed connection between the upper support plate and the lower support plate. During use, the present application does not require drilling holes on the top and side walls of the tunnel, and will not damage the structure of the tunnel wall. At the same time, the wire mesh used can prevent falling rocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model is a schematic diagram of a roof support device for underground iron ore mining.

[0020] Figure 2 It is a front view of a roof support device for underground iron ore mining according to the utility model.

[0021] Figure 3 The utility model is a cross-sectional view of a roof support device for underground iron ore mining.

[0022] Figure 4 This utility model Figure 3 The front view of some parts in.

[0023] Figure 5 This utility model Figure 3 A partial enlarged view of the .

[0024] Figure 6 It is a side view of the wire mesh connection support body of the utility model.

[0025] Figure 7 It is a schematic diagram of the utility model of the clamping plate connected to the supporting body.

[0026] Among them: lane 10, positioning groove 20, lower support plate 30, lower connector 31, lower positioning hole 32, upper support plate 40, upper connector 41, upper positioning hole 42, clamping plate 50, through hole 51, bolt 60, nut 61, wire mesh 70, positioning ring 80, screw 81, threaded hole 82. DETAILED DESCRIPTION

[0027] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0028] like Figure 1-7 In the first embodiment, a roof support device for underground iron ore mining includes:

[0029] A number of supporting bodies are distributed along the depth of the tunnel 10;

[0030] A plurality of steel wire meshes 80 are respectively located between two adjacent support bodies and connected to the adjacent support bodies;

[0031] The support body includes

[0032] Two positioning grooves 20 are provided on both sides of the bottom of the lane 10;

[0033] Two lower support plates 30, one end of which extends into the two positioning grooves 20 respectively, and the other end of which has an L-shaped lower connector 31;

[0034] The upper support plate 40 has L-shaped upper connectors 41 at both ends;

[0035] The two clamping plates 50 are both C-shaped and are respectively fixedly connected to the upper connecting body 41 and the lower connecting body 31 at corresponding positions, and the clamping plates 50 are clamped on the upper connecting body 41 and the lower connecting body 31.

[0036] This embodiment is implemented as follows:

[0037] When the present application is in use, the two lower support plates 40 are first placed in the two positioning grooves 20, and then the upper support plate 40 is contacted with the top of the tunnel 10, and the two upper connectors 41 of the upper support plate 40 are contacted with the lower connectors 31 on the two lower support plates 30, and the two clamping plates 50 are respectively put on the upper connectors 41 and the lower connectors 31 at the corresponding positions and fixed, and finally the wire mesh 80 is fixedly connected to the adjacent support body. The present application does not require drilling holes on the side walls and top of the tunnel 10, will not damage the structure of the tunnel 10, and improves safety.

[0038] Compared with the prior art, the advantages of the present application are high safety and no obstruction to the passage of vehicles.

[0039] See also Figure 1 , 2 , 3, 4, 5, 6, 7, the upper connector 41 has a plurality of upper positioning holes 42 penetrating the upper connector 41, the lower connector 31 has lower positioning holes 32 penetrating the lower connector 31 at positions corresponding to the upper positioning holes 42, the card plate 50 has through holes 51 at positions corresponding to the upper positioning holes 42 and the lower positioning holes 32, and the through holes 51 have bolts 60 penetrating the through holes 51, the upper positioning holes 42, and the lower positioning holes 32 and connected to the nuts 61;

[0040] The bolt 61 can penetrate the upper positioning hole 42 of the upper connector 41, the lower positioning hole 32 of the lower connector 331, and the through hole 51 on the clamping plate 50, and then the bolt 60 is connected with the nut 61 to fix the clamping plate 50 to the upper connector 41 and the lower connector 31.

[0041] See also Figure 7 , two or more adjacent supporting bodies are fixedly connected by extending the same clamping plate 50;

[0042] The extended clamping plate 50 can connect the upper connecting bodies 41 and the lower connecting bodies 31 of the plurality of supporting bodies, thereby realizing the connection between adjacent supporting bodies and increasing the overall strength.

[0043] See also Figure 1 , 2 6. A plurality of positioning rings 80 are sleeved on the steel mesh 70 at positions corresponding to the upper support plate 40 and the lower support plate 30. The positioning rings 80 have a plurality of screws 81 penetrating the positioning rings 80. Positions corresponding to the screws 81 on the upper support plate 40 and the lower support plate 30 have threaded holes 82. The screws 81 are threadedly connected to the threaded holes 82 at corresponding positions.

[0044] The screw rod 81 can be connected to the threaded hole 82 to fix the position of the positioning ring 80. The positioning ring 80 fixes the position of the wire mesh so that the wire mesh can be replaced after being crushed.

[0045] The above are only preferred implementations of the present invention. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A roof support device for underground iron ore mining, characterized in that: include Several supporting bodies are distributed along the depth of the tunnel; A plurality of steel wire meshes are respectively located between two adjacent supporting bodies and connected to the adjacent supporting bodies; The support body includes Two positioning grooves are arranged on both sides of the bottom of the tunnel; Two lower support plates, one end of which extends into the two positioning grooves respectively and the other end of which has an L-shaped lower connector; An upper support plate, with L-shaped upper connectors at both ends; The two clamping plates are both C-shaped and are respectively fixedly connected to the upper connecting body and the lower connecting body at corresponding positions, and the clamping plates are clamped on the first connecting body and the second connecting body.

2. The roof support device for underground iron ore mining according to claim 1, characterized in that: The upper connector has a plurality of upper positioning holes penetrating the upper connector, the lower connector has lower positioning holes penetrating the lower connector at positions corresponding to the upper positioning holes, and the card plate has through holes at positions corresponding to the upper positioning holes and the lower positioning holes, each of which has a bolt penetrating the through hole, the upper positioning hole, the lower positioning hole and connected to a nut.

3. The roof support device for underground iron ore mining according to claim 1, characterized in that: Two or more adjacent supporting bodies are fixedly connected by extending the same clamping plate.

4. The roof support device for underground iron ore mining according to claim 1, characterized in that: The steel wire mesh is sleeved with a plurality of positioning rings at positions corresponding to the upper support plate and the lower support plate. The positioning rings are provided with a plurality of screw rods penetrating the positioning rings. The upper support plate and the lower support plate are provided with threaded holes at positions corresponding to the screw rods. The screw rods are threadedly connected with the threaded holes at the corresponding positions.

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