Supporting mechanism for soft rock roadway

Abstract

The utility model discloses a supporting mechanism for a soft rock roadway. The supporting mechanism of the soft rock roadway comprises a sleeve which is of a cylindrical structure, a plurality of supporting rods are hinged to the outer wall of the sleeve, torsion springs are arranged at the hinged positions of the sleeve and the supporting rods, and the sleeve is installed on an anchor rod. According to the supporting mechanism of the soft rock roadway, the restraining effect on the anchor rod during rotation is achieved by arranging related components such as the sleeve, the anchor rod is prevented from swinging, compared with the mode of manually restraining the anchor rod, the palm of a worker can be prevented from making direct contact with the rotating anchor rod through the sleeve, and therefore the safety of the worker is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of roadway support, in particular to a support mechanism for soft rock roadways. Background Art

[0002] Roadway support is an important technical measure to ensure the stability and safety of roadways during coal mining. The main purpose of roadway support is to relieve and reduce the movement of surrounding rock, prevent the excessive shrinkage of the roadway section, and avoid the collapse of the separated and damaged surrounding rock.

[0003] Soft rock roadways have a relatively thick soft layer, and the support work is more difficult than that of ordinary rock layers and requires higher support strength. The currently commonly used method is to drive grouting bolts deep into the soft rock, and then inject slurry into the soft rock to improve the strength of the soft rock itself and the bond force between the bolts and the soft rock.

[0004] When driving the bolts, due to the large slenderness ratio of the bolts, the rod body of the bolt will swing off the central axis when it rotates. At this time, the staff generally holds the bolt by hand to reduce the swing of the bolt itself, and the rotating bolt is likely to roll up the worker's gloves and cause arm injuries.

[0005] Therefore, it is necessary to provide a support mechanism for soft rock roadways to solve the above technical problems. Summary of the Utility Model

[0006] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a support mechanism for soft rock roadways, which can replace manual support of bolts and reduce their swing.

[0007] To achieve the above object, the technical scheme adopted by the utility model is as follows:

[0008] The support mechanism for soft rock roadways includes: a sleeve, the sleeve is of a cylindrical structure, a plurality of support rods are hinged to the outer wall of the sleeve, a torsion spring is provided at the hinge between the sleeve and the support rods, and the sleeve is installed on the bolt.

[0009] Preferably, a wedge block is provided at the upper end of the sleeve, the upper end of the outer wall of the wedge block is thick and the lower end is thin, a sealing plug is further provided on the bolt, the sealing plug is made of metal material and the outer wall is wrapped with rubber, the upper end of the sealing plug is fixedly provided with an enlarged end, and the enlarged end can be inserted into the sleeve.

[0010] Preferably, a plurality of guide blocks are provided on the support rods, and through holes are provided in the guide blocks.

[0011] Preferably, a pulley is provided at the other end of the support rod.

[0012] Preferably, the pulley is detachably connected to the support rod.

[0013] Preferably, the support rod is installed at the lower end of the outer wall of the sleeve.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] (1) By setting related components such as the sleeve, the utility model realizes the restraint effect on the rotation of the bolt, preventing the bolt from swinging. Compared with the method of manually restraining the bolt, using the sleeve can avoid the direct contact between the staff's palm and the rotating bolt, thus ensuring the safety of the staff.

[0016] (2) By setting components such as the enlarged end, the utility model realizes the effect of fixing the sleeve on the hole wall. Finally, the bolt and the entire support structure are fixed on the rock wall, improving the connection stability between the support mechanism and the rock wall.

[0017] (3) By setting the guide block and installing the bolt at the guide block, the installation stability of the support rod can be further improved. The support rod has a stronger restraint effect on the soft rock formation above it. At the same time, the bolt 201 installed on the guide block also plays a role in fixing the formation. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of the support mechanism for a soft rock roadway provided by the utility model;

[0019] Figure 2 is a schematic structural diagram of the support mechanism for a soft rock roadway provided by the utility model;

[0020] Figure 3 is a schematic structural diagram of the support mechanism for a soft rock roadway provided by the utility model;

[0021] Figure 4 is a schematic structural diagram of the support mechanism for a soft rock roadway provided by the utility model.

[0022] Among them, the names corresponding to the reference numerals are: 101, support rod; 102, sleeve; 103, pulley; 104, guide block; 105, sealing plug; 106, enlarged end; 107, wedge block; 201, bolt. Detailed Embodiments

[0023] The following further illustrates the utility model in conjunction with the description of the drawings and embodiments. The implementation manners of the utility model include but are not limited to the following embodiments.

[0024] First Embodiment:

[0025] Such as Figure 1-2As shown in the figure, the support mechanism for soft rock roadway provided by the present utility model includes: a sleeve 102. The sleeve 102 is a cylindrical structure, and a steel pipe can be used as the sleeve 102. A number of support rods 101 are hinged to the outer wall of the sleeve 102. A torsion spring is provided at the hinge between the sleeve 102 and the support rod 101. The initial state is as shown in Figure 1 In the figure, the sleeve 102 is slidably installed on the anchor bolt 201. When in use, first pass the anchor bolt 201 through the sleeve 102, and the upper end of the support rod 101 supports on the rock wall. Then hold the sleeve 102 or the support rod 101 and use an anchor machine to drive the anchor bolt 201 into the rock wall. During this process, the sleeve 102 restricts the swing of the anchor bolt 201 instead of the staff's palm. At the same time, the support rod 101 supports on the rock wall to further prevent the anchor bolt 201 from swinging. As the anchor bolt 201 is driven into the rock wall, the cover plate on the anchor bolt 201 presses the end of the support rod 101 in contact with the rock stratum to rotate until it reaches the state as shown in Figure 2 In the figure, at this time, the sleeve 102 enters the hole pre-drilled in the rock wall, the support rod 101 reaches the maximum rotation angle, and the support rod 101 presses on the wire mesh laid in the previous process.

[0026] By setting the sleeve 102 and other related components, the restraint effect on the rotation of the anchor bolt 201 is realized, and the swing of the anchor bolt 201 is prevented. Compared with the method of manually restraining the anchor bolt 201, using the sleeve 102 can avoid the direct contact between the staff's palm and the rotating anchor bolt 201, thus ensuring the safety of the staff.

[0027] Second embodiment:

[0028] As shown in Figure 2-3 In the figure, a wedge-shaped block 107 is provided at the upper end of the sleeve 102. The outer wall of the wedge-shaped block 107 is thick at the upper end and thin at the lower end. A sealing plug 105 is also provided on the anchor bolt 201. The sealing plug 105 is made of metal material and is wrapped with rubber on the outer wall. An enlarged end 106 is fixed at the upper end of the sealing plug 105. The enlarged end 106 can be inserted into the sleeve 102. When the anchor bolt 201 gradually enters the rock stratum, the sealing plug 105 at the lower part of the anchor bolt 201 also gradually approaches the sleeve 102 and penetrates into the sleeve 102. The structure formed by the wedge-shaped block 107 at the end of the sleeve 102 and the enlarged end 106 at the end of the sealing plug 105 is similar to an expansion bolt. The enlarged end 106 can easily enter the sleeve 102. When moving to the part of the wedge-shaped block 107, the inner diameter of the wedge-shaped block 107 is smaller than the outer diameter of the enlarged end 106. The enlarged end 106 squeezes the wedge-shaped block 107 to deform radially outward. Finally, the wedge-shaped block 107 squeezes the hole wall and is fixed on the hole wall by friction.

[0029] By setting components such as the enlarged end 106, the effect of fixing the sleeve 102 on the hole wall is realized. Finally, the anchor bolt 201 and the entire support structure are fixed on the rock wall, improving the connection stability between the support mechanism and the rock wall.

[0030] Third Embodiment:

[0031] As shown in Figure 4 , a number of guiding blocks 104 are provided on the support rod 101. Through holes are formed in the guiding blocks 104, and the anchor bolts 201 can be inserted into the through holes. When the first anchor bolt 201 is driven into the rock wall in the manner of the first embodiment, the state of the support device is as shown in Figure 2 . Then, holes are drilled in the rock wall at the position of each guiding block 104, the anchor bolts 201 are passed through the guiding blocks 104, and the anchor bolts 201 are driven into the rock formation according to the general installation method of the anchor bolts 201.

[0032] By providing the guiding blocks 104 and installing the anchor bolts 201 at the guiding blocks 104, the installation stability of the support rod 101 can be further improved, the constraint effect of the support rod 101 on the soft rock formation above it is stronger, and at the same time, the anchor bolts 201 installed on the guiding blocks 104 also play a role in fixing the rock formation.

[0033] Fourth Embodiment:

[0034] As shown in Figure 1-2 , a pulley 103 is provided at the other end of the support rod 101. One end of the support rod 101 with the pulley 103 is in contact with the rock wall. Since a wire mesh is provided on the rock wall or the rock wall itself is uneven, the pulley 103 is provided at the end of the support rod 101 so that the end of the support rod 101 can slide on the surface of the rock wall.

[0035] Fifth Embodiment:

[0036] The pulley 103 is detachably connected to the support rod 101. For example, through holes are formed on the surface of the support rod 101, and through holes are also provided at the corresponding positions on the mounting frame of the pulley 103. Bolts pass through the through holes of the two and are tightened and connected. For a relatively flat rock wall, the pulley 103 is not used and the end of the support rod 101 can still slide smoothly. For a rock wall with uneven surface, the pulley 103 must be used to ensure that the end of the support rod 101 slides on the rock wall. Therefore, the staff can decide whether to install the pulley 103 at the end of the support rod 101 according to the actual situation at the work site, which can also reduce the overall weight of the device and facilitate carrying.

[0037] Sixth Embodiment:

[0038] As shown in Figure 1 , the support rod 101 is installed at the lower end of the outer wall of the sleeve 102. The closer the support rod 101 is to the lower end of the sleeve 102, the greater the length of the sleeve 102 entering the rock wall, and the deeper the corresponding anchor bolt 201 is driven into the rock wall, and the more stable the structure is.

[0039] Working principle: First, pass the anchor rod 201 through the sleeve 102. The upper end of the support rod 101 is supported on the rock wall. Then, hold the sleeve 102 or the support rod 101 and use an anchor machine to drive the anchor rod 201 into the rock wall. During this process, the sleeve 102 replaces the palm of the worker to restrain the swing of the anchor rod 201, and at the same time, the support rod 101 is supported on the rock wall to further prevent the anchor rod 201 from swinging.

[0040] The above embodiments are only one of the preferred embodiments of the present invention and should not be used to limit the protection scope of the present invention. Any meaningless modifications or touch-ups made on the main design concept and spirit of the present invention, as long as the technical problems solved are still the same as those of the present invention, should be included in the protection scope of the present invention.

Claims

1. A support mechanism for a soft rock roadway, characterized in that Comprising: A sleeve (102), the sleeve (102) having a cylindrical structure, a plurality of support rods (101) being hinged to the outer wall of the sleeve (102), a torsion spring being provided at the hinge between the sleeve (102) and the support rods (101), and the sleeve (102) being mounted on an anchor rod (201).

2. The support mechanism for the soft rock roadway according to claim 1, characterized in that, A wedge block (107) is provided at the upper end of the sleeve (102), the outer wall of the wedge block (107) being thicker at the upper end and thinner at the lower end. A sealing plug (105) is further provided on the anchor rod (201), the sealing plug (105) being made of a metal material and having a rubber wrapping on its outer wall. An enlarged end (106) is fixed to the upper end of the sealing plug (105), and the enlarged end (106) can be inserted into the sleeve (102).

3. The support mechanism for the soft rock roadway according to claim 1, characterized in that, A plurality of guide blocks (104) are provided on the support rod (101), and through holes are formed in the guide blocks (104).

4. The support mechanism for the soft rock roadway according to claim 3, characterized in that, The other end of the support rod (101) is provided with a pulley (103).

5. The support mechanism for the soft rock roadway according to claim 4, characterized in that, The pulley (103) is detachably connected to the support rod (101).

6. The support mechanism for soft rock roadways according to claim 1, characterized in that, The support rod (101) is mounted at a relatively lower end of the outer wall of the sleeve (102).

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