A dustproof slotting device for mining

Abstract

The utility model discloses a dustproof type slotting equipment for mining, including pneumatic rock drill, the mounting bracket front end fixed of pneumatic rock drill has the mounting panel, and the bearing is installed on the mounting panel, the inner wall of bearing is fixed with the limit strip, and the limit strip slidingly arranged in the recess that sets up on the outer wall of drill rod, still include the dust cover of installation on the mounting panel, install the gear ring on the outer wall of the bearing inner ring extension end and rotate and set up the gear in the dust cover inner chamber. Set up with dustproof cover of dustproof filter to the dustproof treatment of bearing, also do not affect the heat dissipation of bearing, and hard impact lever and elastic steel sheet contact after collision, make elastic steel sheet drive dustproof filter screen vibration, and the dust on it is shaken down, and elastic steel sheet itself can swing vibration for a certain length after being impacted, can make dustproof filter screen form longer sustained vibration, further improve the shaking effect of dust.

Description

Technical Field

[0001] This utility model relates to the field of gold mining technology, and in particular to a dustproof shoveling device for mining. Background Technology

[0002] In gold and other metal mining operations, one of the core processes in tunnel excavation is slotting blasting—by first creating slots of specific diameter and depth on the working face (divided into large-diameter holes providing a free face and small-diameter charging holes for explosives), conditions are created for subsequent blasting, directly affecting the tunnel formation quality and cycle advance efficiency. Currently, the industry commonly uses mobile pneumatic rock drills for slotting, which, due to their high mobility and adaptability to narrow underground spaces, have become the mainstream equipment for small and medium-sized mines and complex tunnels.

[0003] In gold mining, mobile pneumatic rock drills are used (before work, the height and angle of the drill rod are adjusted; during work, the drill rod is rotated by a pneumatic drive device, and the drill rod is controlled to move laterally outward to drill a slot to a certain depth; after the slot is opened, the drill rod moves in the opposite direction to move out of the slot and return to its original position, and the drill rod continues to move outward to drill the next slot) to cut the rock strata, and then explosives are placed in the slot for blasting.

[0004] To ensure the stability of the drill rod during rotation, a rotating support bearing is installed at the front end of the rock drill's mounting frame. The drill rod passes through the support bearing, which provides support for the drill rod. However, in actual use, because the support bearing is unprotected and close to the borehole, dust generated during drilling can easily enter the bearing through the bearing's sealing gap, causing abnormal wear inside the bearing and affecting its service life. Therefore, this application provides a dustproof trenching device for mining to meet this requirement. Utility Model Content

[0005] The purpose of this application is to provide a dustproof trenching device for mining, which solves the technical problems mentioned in the background above.

[0006] To achieve the above objectives, this application provides the following technical solution: a dustproof trenching device for mining, comprising a pneumatic rock drill, wherein a mounting plate is fixed to the front end of the mounting frame of the pneumatic rock drill, and a bearing is mounted on the mounting plate, and the bearing is sleeved around the drill rod, a limit strip is fixed on the inner wall of the bearing, and the limit strip is slidably disposed in a groove provided on the outer wall of the drill rod, and further comprising a dust cover mounted on the mounting plate and enclosing the bearing, a gear ring mounted on the outer wall of the inner ring extension end of the bearing, and a gear rotatably disposed in the inner cavity of the dust cover;

[0007] The dust cover is penetrated by the drill rod, and a dustproof and breathable mesh is installed on the side of the dust cover away from the drilling end of the drill rod;

[0008] The gear meshes with the gear ring, a hard impact rod is mounted on the gear, and an elastic steel sheet is provided on the dustproof and breathable mesh, with the elastic steel sheet located on the movement path of the end of the hard impact rod;

[0009] The gear is rotatably mounted on the mounting rod, and the lower end of the mounting rod is fixedly connected to the mounting plate.

[0010] In a preferred embodiment of this invention, the outer periphery of the dustproof and breathable mesh is provided with a U-shaped elastic sleeve, and the outer wall of the elastic sleeve is sealed and connected to the mounting plate and the dust cover respectively. The elastic sleeve is a rubber material support.

[0011] In a preferred embodiment of this invention, the impact end of the hard impact rod is configured as a spherical structure.

[0012] In a preferred embodiment of this invention, the diameter ratio of the gear to the gear ring is not less than 2:1.

[0013] In summary, the technical effects and advantages of this utility model are as follows:

[0014] 1. This utility model has a reasonable structure and is equipped with a dust cover with a dust filter to protect the bearing from dust without affecting the heat dissipation of the bearing. At the same time, the hard impact rod collides with the elastic steel sheet, causing the elastic steel sheet to drive the dust filter to vibrate and shake off the dust. In addition, the elastic steel sheet itself can vibrate up and down for a certain period of time after being impacted, which can make the dust filter form a longer continuous vibration, further improving the dust removal effect.

[0015] 2. In this utility model, the dust filter and the dust cover are flexibly connected by an elastic sleeve. The flexible connection allows the dustproof and breathable mesh to undergo slight displacement with the vibration of the elastic steel sheet, so that the vibration is extended from the local area of ​​the elastic steel sheet to the entire mesh surface, thereby improving the overall dust removal effect. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front view structural diagram of the present invention;

[0018] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of the dust cover and bearing;

[0019] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle.

[0020] In the diagram: 1. Pneumatic rock drill; 2. Mounting frame; 3. Drill rod; 4. Dust cover; 5. Mounting plate; 6. Bearing; 7. Limiting strip; 8. Groove; 9. Gear; 10. Hard impact rod; 11. Elastic steel sheet; 12. Mounting rod; 13. Gear ring; 14. Elastic sleeve; 15. Dustproof and breathable mesh. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example: Reference Figure 1-3 The disclosed dustproof trenching equipment for mining includes a pneumatic rock drill 1. A mounting plate 5 is fixed to the front end of the mounting frame 2 of the pneumatic rock drill 1, and a bearing 6 is mounted on the mounting plate 5. The bearing 6 is sleeved around the drill rod 3. A limit strip 7 is fixed on the inner wall of the bearing 6, and the limit strip 7 is slidably disposed in a groove 8 provided on the outer wall of the drill rod 3. The equipment is characterized by further including a dust cover 4 mounted on the mounting plate 5 and wrapping the bearing 6, a toothed ring 13 mounted on the outer wall of the inner ring extension end of the bearing 6, and a gear 9 rotatably disposed in the inner cavity of the dust cover 4.

[0023] The dust cover 4 is penetrated by the drill rod 3, and a dustproof and breathable mesh 15 is installed on the side of the dust cover 4 away from the drilling end of the drill rod 3.

[0024] Gear 9 meshes with gear ring 13. A hard impact rod 10 is installed on gear 9, and an elastic steel sheet 11 is provided on dustproof and breathable mesh 15. The elastic steel sheet 11 is located on the movement path of the end of hard impact rod 10.

[0025] Gear 9 is rotatably mounted on mounting rod 12, and the lower end of mounting rod 12 is fixedly connected to mounting plate 5.

[0026] In actual use, the dustproof and ventilated mesh 15 is only installed at the end away from the drilling end of the drill rod 3. The vent far from the drilling end is in a low dust environment, which reduces the probability of dust contacting the bearing 6 from the source. Except for the mounting end face of the dustproof and ventilated mesh 15, the rest of the dust cover 4 and the mounting plate 5 form a sealed environment. Only the mounting end face of the dustproof and ventilated mesh 15 can be used for air intake. Its purpose is to cool down the rapidly rotating bearing 6 and prevent dust from entering the interior of the bearing 6.

[0027] When the drill rod 3 rotates, it drives the inner ring of the bearing 6 to rotate. The gear 9 rotates through the toothed ring 13 on the outer wall of the inner ring, causing the hard impact rod 10 to collide with the elastic steel sheet 11. This causes the elastic steel sheet 11 to vibrate the dust filter 15, shaking off the dust. At the same time, after being impacted, the elastic steel sheet 11 can vibrate up and down for a certain period of time, which can make the dust filter 15 vibrate for a longer period of time, further improving the dust removal effect.

[0028] As a preferred embodiment of this example, Figure 2 As shown, the outer periphery of the dustproof and breathable mesh 15 is provided with a U-shaped elastic sleeve 14, and the outer wall of the elastic sleeve 14 is sealed and connected to the mounting plate 5 and the dust cover 4 respectively. The elastic sleeve 14 is a rubber material support.

[0029] The dust filter 15 is flexibly connected to the dust cover 4 by the elastic sleeve 14. A rigid connection would cause the vibration energy to be absorbed by the dust cover 4, while a flexible connection allows the dust filter 15 to undergo slight displacement with the vibration of the elastic steel sheet 11, so that the vibration is extended from the elastic steel sheet 11 to the entire mesh surface, thereby improving the overall dust removal effect.

[0030] As a preferred embodiment of this example, Figure 3 As shown, the impact end of the hard impact rod 10 is configured as a spherical structure.

[0031] The noise from sharp impacts between metals can reach 80-90 dB (the noise limit in underground mines is usually 85 dB), while the impact of a spherical end is a "gentle contact-deformation-separation" process, reducing the noise to 65-75 dB, which meets the occupational health standards for underground mines and reduces the risk of noise exposure for operators.

[0032] In a preferred embodiment of this invention, the diameter ratio of gear 9 to gear ring 13 is 2:1.

[0033] If the diameter ratio is too small, the rotation speed of gear 9 will increase, the impact strength between its hard impact rod 10 and elastic steel sheet 11 will be too large, and the impact frequency will be too fast, which will easily cause the hard impact rod 10 to bend and deform.

[0034] If the diameter ratio is too large, the impact strength between the hard impact rod 10 and the elastic steel sheet 11 will be too small, and the impact frequency will be too slow, which will not be conducive to the dust being shaken off the dust filter screen 15.

[0035] Therefore, the diameter ratio is set to 2:1, which ensures that the components will not be damaged, while also cleaning the dust on the dust filter 15.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dustproof trenching device for mining, comprising a pneumatic rock drill (1), wherein a mounting plate (5) is fixed to the front end of the mounting frame (2) of the pneumatic rock drill (1), and a bearing (6) is mounted on the mounting plate (5), and the bearing (6) is sleeved around the drill rod (3), a limiting strip (7) is fixed on the inner wall of the bearing (6), and the limiting strip (7) is slidably disposed in a groove (8) provided on the outer wall of the drill rod (3), characterized in that: It also includes a dust cover (4) installed on the mounting plate (5) and enclosing the bearing (6), a gear ring (13) installed on the outer wall of the inner ring extension end of the bearing (6), and a gear (9) rotatably disposed in the inner cavity of the dust cover (4); The dust cover (4) is penetrated by the drill rod (3), and a dustproof and breathable mesh (15) is installed on the side of the dust cover (4) away from the drilling end of the drill rod (3). The gear (9) meshes with the gear ring (13), a hard impact rod (10) is installed on the gear (9), and an elastic steel sheet (11) is provided on the dustproof and breathable mesh (15), and the elastic steel sheet (11) is located on the movement path of the end of the hard impact rod (10). The gear (9) is rotatably mounted on the mounting rod (12), and the lower end of the mounting rod (12) is fixedly connected to the mounting plate (5).

2. The dust-proof trenching equipment for mining according to claim 1, characterized in that: The outer periphery of the dustproof and breathable mesh (15) is provided with a spiral elastic sleeve (14), and the outer wall of the elastic sleeve (14) is sealed to the mounting plate (5) and the dust cover (4) respectively. The elastic sleeve (14) is a rubber material support.

3. The dust-proof trenching equipment for mining according to claim 1, characterized in that: The impact end of the hard impact rod (10) is configured as a spherical structure.

4. The dust-proof trenching equipment for mining according to claim 1, characterized in that: The diameter ratio of the gear (9) to the gear ring (13) is not less than 2:1.

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