Small coal pillar upper shoulder corner support for gob-side entry driving

Abstract

The utility model relates to the technical field of roadway supporting, in particular to a small coal pillar upper shoulder corner support for gob-side entry driving, which comprises a first supporting plate and a second supporting plate, the first supporting plate and the second supporting plate are connected in a hinged structure mode, grooves are formed in the upper end face of the first supporting plate and the side vertical face of the second supporting plate, and springs are arranged in the grooves. A movable plate is arranged at the end, away from the groove, of the spring in a fixed structure mode, a pressure switch connected with the spring is arranged at the end, away from the movable plate, of the groove in a fixed structure mode, and the pressure switch is connected with an early warning device. The two supporting plates are connected with anchor rods in a detachable structure mode, the anchor rods penetrate through the supporting plates and are driven into the top of a roadway and a coal pillar correspondingly, the two supporting plates are supported, and the stability of the structure is enhanced. Through the arrangement of the pressure switch and the early warning device, early warning is conducted in time when the top of the coal pillar or the roadway deforms, so that operators are reminded to strengthen protection, and potential risks are eliminated.

Description

Technical Field:

[0001] This application relates to the technical field of roadway support, and particularly to a small coal pillar upper shoulder angle support for driving along gob-side entry. Background Art:

[0002] Traditional gob-side entry driving supports include I-steel shed supports, U-steel supports, and bolt (cable) supports. Although these supports can support the coal walls on both sides of the roadway, it is difficult to deal with the situation of caving and sliding at the upper shoulder angle of small coal pillars, so there are certain safety hazards.

[0003] The utility model patent with the application number 201822108660.8 - a small coal pillar upper shoulder angle support for driving along gob-side entry, which relates to the technical field of roadway support, includes a first steel strip, a second steel strip, a support inclined plate, a first reinforcement plate, a second reinforcement plate, roof bolts, rib bolts, and bolt trays. The support inclined plate is fixedly connected to the first reinforcement plate and the second reinforcement plate. The first reinforcement plate is pressed on the first steel strip and fixedly connected. The second reinforcement plate is pressed on the second steel strip and fixedly connected. The tray of the rib bolt is pressed on the first reinforcement plate, and the tray of the roof bolt is pressed on the second reinforcement plate. The first steel strip and the second steel strip use W steel strips, and the structure of this shoulder angle support can be arranged at intervals along the roadway trend. The utility model improves the stress distribution of small coal pillars, effectively prevents caving at the shoulder angle of small coal pillars, and has the advantages of simple structure, convenient construction, and good support effect.

[0004] This patent provides a technical solution for supporting the shoulder angle of the coal pillar, but this technical solution cannot monitor the deformation of the coal pillar and the top of the roadway, making it difficult for operators to react in time when the coal pillar or the roadway deforms, increasing the risk of caving accidents. Utility Model Content:

[0005] To solve the above technical problems, the present utility model provides a small coal pillar upper shoulder angle support for driving along gob-side entry. The technical problem to be solved is that without monitoring measures, it is difficult for operators to react in time when the coal pillar or the roadway deforms, thereby increasing the risk of accidents. To solve the above technical problems, the technical solution adopted by the present utility model is:

[0006] A small coal pillar upper shoulder angle support for driving along gob-side entry, comprising:

[0007] A first support plate and a second support plate, the first support plate and the second support plate are connected in an articulated structure, and grooves are provided on the upper end surface of the first support plate and the side vertical surface of the second support plate;

[0008] A movable plate located in the groove, a spring is arranged in the groove, and the movable plate is fixedly connected to the end of the spring away from the groove;

[0009] A pressure switch connected to a spring, the pressure switch being fixed at one end of the groove away from the movable plate;

[0010] An early warning device, the early warning device being connected to the pressure switch;

[0011] An anchor rod, the anchor rod being connected to the support plate in a detachable structure;

[0012] An adjusting rod with variable length, both ends of the adjusting rod being connected to the first support plate and the second support plate in a hinged structure.

[0013] Further, the first support plate and the second support plate are connected by a hinge.

[0014] Further, the adjusting rod includes a positive and negative thread screw rod, both ends of the positive and negative thread screw rod are connected with fixing rods by means of thread meshing, and a ferrule is arranged at the outer end of the fixing rod in a fixed structure.

[0015] Further, bearing seats are arranged on the lower end face of the first support plate and the side vertical face of the second support plate; the bearing seats are connected to the ferrule by a pin shaft.

[0016] Further, a fitting groove adapted to the adjusting rod is formed on the first support plate, and buckles are arranged at both ends of the fitting groove in a fixed structure.

[0017] Further, the early warning device is a warning light strip, and the warning light strip is electrically connected to the pressure switch through a wire.

[0018] The beneficial effects of the present utility model are:

[0019] 1. Through the arrangement of the pressure switch and the early warning device, early warning is carried out in time when the coal pillar or the top of the roadway deforms, reminding the operators to strengthen protection, thereby eliminating potential risks.

[0020] 2. Through the arrangement of the pin shaft seat and the adjusting rod, the angle between the two support plates can be adjusted, so that the two support plates can support coal pillars and roadways with different included angles, improving the practicability of the device.

[0021] 3. By arranging the fitting groove, the adjusting rod can be placed in the fitting groove and fixed by the buckle, so as to fold and store the two support plates, saving the placement space and avoiding the loss or damage caused by the random placement of the adjusting rod. Description of the drawings:

[0022] Figure 1 is a three-dimensional structural schematic diagram of the present utility model.

[0023] Figure 2 is a three-dimensional structural schematic diagram of a part of the present utility model.

[0024] Figure 3 is a three-dimensional structural schematic diagram of the present utility model in a storage state.

[0025] Figure 4 It is a schematic exploded view of a partial structure of the present utility model.

[0026] In the figure:

[0027] 1. First support plate, 2. Second support plate, 3. Groove, 4. Spring, 5. Movable plate, 6. Pressure switch, 7. Anchor rod, 8. Adjusting rod, 81. Right and left hand screw rod, 82. Bearing race, 83. Fixed rod, 9. Buckle, 10. Warning light strip, 11. Bearing seat, 12. Embedded groove. Specific embodiments:

[0028] To make the purpose, technical solutions and advantages of the implementation of the present utility model clearer, the present utility model will now be further described in detail with reference to the accompanying drawings and the following embodiments, so that the public can better master the implementation method of the present utility model. The specific implementation scheme of the present utility model is as follows:

[0029] A small coal pillar upper shoulder angle support for driving along the gob-side roadway includes a first support plate 1 and a second support plate 2. The first support plate 1 and the second support plate 2 are connected in a hinged structure. Grooves 3 are provided on the upper end surface of the first support plate 1 and the side vertical surface of the second support plate 2. Springs 4 are arranged in the grooves 3. One end of the spring 4 away from the groove is fixedly provided with a movable plate 5 in a fixed structure. One end of the groove 3 away from the movable plate 5 is fixedly provided with a pressure switch 6 connected to the spring 4. The pressure switch 6 is connected to a warning device; both support plates are detachably connected with anchor rods 7. The anchor rods 7 pass through the support plates and are driven into the roof of the roadway and the coal pillar respectively to support the two support plates and enhance the stability of the structure.

[0030] Furthermore, through the setting of the pressure switch 6 and the warning device, early warning is given in time when the coal pillar or the roof of the roadway deforms, so as to remind the operators to strengthen protection and eliminate potential risks.

[0031] Specifically, the first support plate 1 and the second support plate 2 are connected by a hinge; the included angle between the first support plate 1 and the second support plate 2 can be changed, so as to adapt to coal pillars and the roof of the roadway at different angles and improve the practicability of the device.

[0032] It should be noted that the first support plate 1 and the second support plate 2 are respectively connected to one end of an adjusting rod 8 in a hinged structure. The adjusting rod 8 includes a right and left hand screw rod 81. Both ends of the right and left hand screw rod 81 are connected to fixed rods 83 by means of thread engagement. A race 82 is fixedly provided at the outer end of the fixed rod 83; the adjusting rod 8 can change the overall length by rotating the right and left hand screw rod 82, ensuring that it can still play a supporting role after the included angle between the two support plates changes, and improving the practicability of the device.

[0033] Further, bearing seats 11 are provided on the lower end face of the first support plate 1 and the side face of the second support plate 2, and the bearing seats 11 are connected to the ferrule 82 through pin shafts.

[0034] It should be noted that the first support plate 1 is provided with an embedded groove 12 adapted to the adjusting rod 8, and buckles 9 are arranged at both ends of the embedded groove 12 in a fixed structure manner; the adjusting rod 8 is placed in the embedded groove 12 and fixed by the buckles, so that the two support plates can be folded and stored, saving storage space and avoiding the loss or damage that may be caused by the random placement of the adjusting rod 8.

[0035] Specifically, the warning device is a warning light strip 10, and the warning light strip 10 is electrically connected to the pressure switch 6 through a wire; after the pressure switch 6 senses the pressure transmitted by the deformation of the coal pillar or the top of the roadway, the switch is turned on, and the warning light strip 10 is powered on to emit a prominent light, thereby timely reminding the staff that there is an abnormal situation in the coal pillar or the top of the roadway.

[0036] The working principle and process of the present utility model are as follows:

[0037] When the present utility model is in use, the first support plate 1 and the second support plate 2 are respectively attached to the top of the roadway and the coal pillar, and the two bearing ferrules 82 are respectively connected to the two bearing seats 11 through pin shaft B, and the anchor bolts 7 pass through the through holes and are respectively driven into the top of the roadway and the coal pillar; when the top of the roadway or the coal pillar deforms, the deformed part presses the movable plate 5, and the movable plate 5 presses down to make the spring 4 contract, transmitting force to the pressure switch 6, and the pressure switch 6 sends a signal to the warning light strip 10, and the warning light strip 10 lights up.

[0038] When storage is required, the anchor bolts 7 are taken out, then the adjusting rod 8 is placed in the embedded groove 12, the buckle 9 is buckled, the adjusting rod 8 is fixed, and then the first support plate 1 is rotated until it contacts the second support plate 2, and the storage is completed.

[0039] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "front", "rear", "lower left", "upper right", "outer", "clockwise", "counterclockwise", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the protection scope of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Although the present utility model is described according to a limited number of embodiments, those skilled in the art in this technical field should understand that within the scope of the present utility model described herein, other embodiments can be conceived.

Claims

1. A small coal pillar upper shoulder angle support for gob-side entry driving, characterized in that, Comprising: A first support plate (1) and a second support plate (2), the first support plate (1) and the second support plate (2) are connected in a hinged structure, and grooves (3) are provided on the upper end surface of the first support plate (1) and the side vertical surface of the second support plate (2); A movable plate (5) located in the groove (3), a spring (4) is arranged in the groove (3), and the movable plate (5) is connected to the end of the spring (4) far from the groove (3) in a fixed structure; A pressure switch (6) connected to the spring (4), the pressure switch (6) is fixed at the end of the groove (3) far from the movable plate (5); An early warning device, the early warning device is connected to the pressure switch (6); An anchor rod (7), the anchor rod (7) is connected to the support plate in a detachable structure; An adjusting rod (8) with variable length, both ends of the adjusting rod (8) are connected to the first support plate (1) and the second support plate (2) in a hinged structure.

2. The small coal pillar upper shoulder angle support for gob-side entry driving according to claim 1, characterized in that: The first support plate (1) and the second support plate (2) are connected by a hinge.

3. The shoulder corner support of a small coal pillar for driving along the gob according to claim 1, wherein: The adjusting rod (8) includes a positive and negative thread screw rod (81), both ends of the positive and negative thread screw rod (81) are connected with fixing rods (83) by means of thread engagement, and a ferrule (82) is arranged at the outer end of the fixing rod (83) in a fixed structure.

4. The small coal pillar upper shoulder angle support for gob-side entry driving according to claim 3, characterized in that: Bearing seats (11) are arranged on the lower end surface of the first support plate (1) and the side vertical surface of the second support plate (2); The bearing seat (11) is connected to the ferrule (82) by a pin shaft.

5. The shoulder angle support of a small coal pillar for driving along the gob according to claim 4, characterized in that: An embedding groove (12) adapted to the adjusting rod (8) is provided on the first support plate (1), and buckles (9) are arranged at both ends of the embedding groove (12) in a fixed structure.

6. The small coal pillar upper shoulder angle support for gob-side entry driving according to claim 1, wherein: The early warning device is a warning light strip (10), and the warning light strip (10) is electrically connected to the pressure switch (6) through a wire.

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