Drill arm structure of rock drill

Abstract

The utility model relates to the technical field of rock drill arms, and discloses a rock drill arm structure which comprises an arm frame, a limiting mechanism is arranged on the arm frame, a second sliding table is connected to the arm frame in a sliding mode, a motor is fixedly installed on the second sliding table, and a fiber tail is fixedly installed at the output end of the motor. And the limiting mechanism comprises a first sliding table and a fixing frame, the fixing frame is fixedly installed on the upper surface of the first sliding table, and the interior of the fixing frame is rotationally connected with a two-way screw rod through a bearing. According to the utility model, the hand wheel is rotated to make the first holder and the second holder close to each other so as to wrap and limit the fiber tail, the rollers are arranged in the first holder and the second holder so as to prevent the fiber tail from contacting the inner walls of the holders, and meanwhile, the rollers can generate rolling friction after contacting with the rotating fiber tail, so that the abrasion phenomenon of the fiber tail is reduced, and the service life of the fiber tail is prolonged. And the service lives of the holder and the fiber tail are prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of rock drill arm, in particular to a rock drill arm structure. Background Art

[0002] Rock drilling is the most important pre-process for blasting in open-pit and underground mining and tunneling. The working speed, drilling accuracy and how to use a mechanism to adjust the rock drill to the best position in the working environment are the key factors in the development of rock drills.

[0003] According to the Chinese patent with the announcement number "CN209385056U", the spatial four-degree-of-freedom rock drill arm mechanism is disclosed. The working speed and rock drilling accuracy of the rock drill are key factors in the development of the rock drill. The utility model can adjust the pitch angle of the main arm relative to the machine body, the left and right swing adjustment of the main arm relative to the machine body, the left and right swing adjustment of the auxiliary arm relative to the main arm, and the pitch angle adjustment of the auxiliary arm relative to the main arm through the control of four hydraulic cylinders, and then adjust the rock drill to meet the working environment requirements to implement rock drilling work. The above-mentioned drill arm limits the fiber tail by using a retaining frame, but when the existing fiber tail retaining frame is in use, the fiber tail will contact the inner wall of the retaining frame, resulting in friction between the inner wall of the retaining frame and the outer wall of the fiber tail. The wear problem will affect the service life of the fiber tail and the retaining frame, and will also cause the problem of unstable rotation of the fiber tail. Therefore, a rock drill arm structure is proposed to solve the above-mentioned problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a rock drill arm structure in view of the deficiencies in the above-mentioned prior art.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a rock drill arm structure, including an arm frame, a limit mechanism is arranged on the arm frame, a second slide is slidably connected to the arm frame, a motor is fixedly installed on the second slide, and a fiber tail is fixedly installed on the output end of the motor;

[0006] The limiting mechanism includes a first slide and a fixed frame, the fixed frame is fixedly installed on the upper surface of the first slide, the interior of the fixed frame is rotatably connected to a bidirectional screw via a bearing, one end of the bidirectional screw is threadedly connected to a first retaining frame, and the other end of the bidirectional screw is threadedly connected to a second retaining frame, the first retaining frame is provided with a groove, and the interior of the groove is rotatably connected to a roller via a bearing.

[0007] Preferably, a handwheel is fixedly mounted on the bidirectional screw, a limiting groove is provided on the inner wall of the fixing frame, the limiting groove is internally slidably connected to a limiting block, and the limiting block is fixedly mounted on the first retaining frame. The setting of the handwheel can facilitate the staff to rotate the bidirectional screw.

[0008] Preferably, the first slide is slidably connected to the arm, a terminal is fixedly mounted on the left end of the arm, the fiber tail passes through the interior of the terminal, and the setting of the terminal can limit the fiber tail.

[0009] Preferably, the number of the rollers is three, and the three rollers are evenly spaced on the inner wall of the first retaining frame. The number of the limit blocks is two, and the two limit blocks are respectively fixedly mounted on the left wall and the right wall of the first retaining frame. The setting of the first retaining frame and the second retaining frame can play a limiting role on the fiber tail.

[0010] Preferably, a guide mechanism is provided on the fixing frame, and the guide mechanism includes a fixing plate and a limiting guide hole. The fixing plate is fixedly mounted on the upper surface of the fixing frame, and the limiting guide hole is opened on the fixing plate. The setting of the guide mechanism can make the retaining frame more stable.

[0011] Preferably, a limiting guide post is inserted into the limiting guide hole, and the limiting guide post is fixedly mounted on the outer wall of the first retaining frame. The limiting guide hole and the limiting guide post can guide the retaining frame.

[0012] The utility model adopts the above technical solution, which can bring the following beneficial effects:

[0013] 1. The drill arm structure of the rock drill operates through the cooperation between the first slide, the fixed frame, the first retaining frame, the second retaining frame, the handwheel, the bidirectional screw, the groove, the roller, the limit groove and the limit block. When the fiber tail is installed, the first retaining frame and the second retaining frame are brought closer to each other by rotating the handwheel, and the fiber tail is wrapped and limited. The first retaining frame and the second retaining frame are provided with rollers inside to prevent the fiber tail from contacting the inner wall of the retaining frame. At the same time, rolling friction occurs when the roller contacts the rotating fiber tail, which reduces the wear of the fiber tail and increases the service life of the retaining frame and the fiber tail.

[0014] 2. The rock drill arm structure can guide and limit the retaining frame through the coordinated operation between the fixed plate, the limiting guide hole and the limiting guide column, so that the retaining frame is more stable during use, the stability of the retaining frame after contact with the fiber tail is improved, and the practicality of the rock drill arm structure is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the limiting mechanism of the utility model;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the fixing frame of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the fixing frame of the utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the first retainer of the utility model.

[0020] In the figure: 1. arm; 2. limiting mechanism; 201. first slide; 202. fixed frame; 203. first retaining frame; 204. second retaining frame; 205. hand wheel; 206. bidirectional screw; 207. groove; 208. roller; 209. limiting groove; 210. limiting block; 3. guide mechanism; 301. fixed plate; 302. limiting guide hole; 303. limiting guide column; 4. second slide; 5. motor; 6. fiber tail; 7. end. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5 An embodiment of the utility model is: a rock drill arm structure, comprising an arm frame 1, a limit mechanism 2 is arranged on the arm frame 1, a second slide 4 is slidably connected to the arm frame 1, a motor 5 is fixedly installed on the second slide 4, and a fiber tail 6 is fixedly installed at the output end of the motor 5;

[0023] The limiting mechanism 2 includes a first slide 201 and a fixed frame 202. The fixed frame 202 is fixedly installed on the upper surface of the first slide 201. The interior of the fixed frame 202 is rotatably connected with a bidirectional screw 206 through a bearing. One end of the bidirectional screw 206 is threadedly connected to the first retaining frame 203, and the other end of the bidirectional screw 206 is threadedly connected to the second retaining frame 204. A groove 207 is provided on the first retaining frame 203. The interior of the groove 207 is rotatably connected with a roller 208 through a bearing. When the fiber tail 6 is installed, the first retaining frame 203 and the second retaining frame 204 are approached to each other by rotating the hand wheel 205, so as to wrap and limit the fiber tail 6. The first retaining frame 203 and the second retaining frame 204 are provided with rollers 208 to prevent the fiber tail 6 from contacting the inner wall of the retaining frame. At the same time, rolling friction will occur after the rollers 208 contact the rotating fiber tail 6, thereby reducing the wear of the fiber tail 6 and improving the service life of the retaining frame and the fiber tail 6.

[0024] A handwheel 205 is fixedly installed on the bidirectional screw 206, and a limiting groove 209 is provided on the inner wall of the fixed frame 202. The inner sliding connection of the limiting groove 209 is connected to a limiting block 210, and the limiting block 210 is fixedly installed on the first retaining frame 203. The setting of the handwheel 205 can facilitate the staff to rotate the bidirectional screw 206.

[0025] The first slide 201 is slidably connected to the arm 1. The left end of the arm 1 is fixedly mounted with a terminal 7. The fiber tail 6 passes through the interior of the terminal 7. The setting of the terminal 7 can limit the fiber tail 6.

[0026] There are three rollers 208, which are evenly spaced on the inner wall of the first retaining frame 203. There are two limit blocks 210, which are respectively fixed on the left and right walls of the first retaining frame 203. The setting of the first retaining frame 203 and the second retaining frame 204 can limit the fiber tail 6.

[0027] Working principle: After the fiber tail 6 is installed, the bidirectional screw 206 is driven to rotate by turning the hand wheel 205, so that the first retaining frame 203 and the second retaining frame 204 are close to each other, and the fiber tail 6 is wrapped and limited. The first retaining frame 203 and the second retaining frame 204 are provided with rollers 208 inside to prevent the fiber tail 6 from contacting the inner wall of the retaining frame. At the same time, rolling friction will occur after the rollers 208 come into contact with the rotating fiber tail 6, thereby reducing the wear of the fiber tail 6.

[0028] See also Figure 1-5 On the basis of the above embodiment, in another embodiment of the utility model, a guide mechanism 3 is provided on the fixing frame 202, and the guide mechanism 3 includes a fixing plate 301 and a limiting guide hole 302. The fixing plate 301 is fixedly mounted on the upper surface of the fixing frame 202, and the limiting guide hole 302 is opened on the fixing plate 301. The setting of the guide mechanism 3 can make the retaining frame more stable.

[0029] The limiting guide hole 302 is inserted with a limiting guide post 303 , which is fixedly mounted on the outer wall of the first retaining frame 203 . The limiting guide hole 302 and the limiting guide post 303 can guide the retaining frame.

[0030] Working principle: Through the coordinated operation between the fixing plate 301, the limiting guide hole 302 and the limiting guide column 303, the retaining frame can be guided and limited, making the retaining frame more stable during use, improving the stability of the retaining frame after contact with the fiber tail 6, and further improving the practicality of the rock drill arm structure.

[0031] The utility model provides a rock drill arm structure. There are many methods and ways to implement the technical solution. The above is only the preferred implementation of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model. These improvements and modifications should also be regarded as the protection scope of the utility model. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A rock drill boom structure, comprising a boom (1), characterized in that: The arm support (1) is provided with a limit mechanism (2), the arm support (1) is slidably connected with a second slide (4), a motor (5) is fixedly mounted on the second slide (4), and a fiber tail (6) is fixedly mounted on the output end of the motor (5); The limiting mechanism (2) comprises a first slide (201) and a fixed frame (202); the fixed frame (202) is fixedly mounted on the upper surface of the first slide (201); a bidirectional screw (206) is rotatably connected to the interior of the fixed frame (202) via a bearing; one end of the bidirectional screw (206) is threadedly connected to a first retaining frame (203); the other end of the bidirectional screw (206) is threadedly connected to a second retaining frame (204); a groove (207) is provided on the first retaining frame (203); a roller (208) is rotatably connected to the interior of the groove (207) via a bearing.

2. A rock drill arm structure according to claim 1, characterized in that: A hand wheel (205) is fixedly mounted on the bidirectional screw (206); a limiting groove (209) is provided on the inner wall of the fixing frame (202); a limiting block (210) is slidably connected inside the limiting groove (209); and the limiting block (210) is fixedly mounted on the first retaining frame (203).

3. A rock drill arm structure according to claim 1, characterized in that: The first slide (201) is slidably connected to the arm (1); a terminal (7) is fixedly mounted on the left end of the arm (1); and the fiber tail (6) passes through the interior of the terminal (7).

4. A rock drill arm structure according to claim 2, characterized in that: The number of the rollers (208) is three, and the three rollers (208) are arranged at equal intervals on the inner wall of the first retaining frame (203); the number of the limit blocks (210) is two, and the two limit blocks (210) are fixedly mounted on the left wall and the right wall of the first retaining frame (203), respectively.

5. A rock drill arm structure according to claim 1, characterized in that: The fixing frame (202) is provided with a guide mechanism (3), the guide mechanism (3) comprising a fixing plate (301) and a position limiting guide hole (302), the fixing plate (301) is fixedly mounted on the upper surface of the fixing frame (202), and the position limiting guide hole (302) is opened on the fixing plate (301).

6. A rock drill arm structure according to claim 5, characterized in that: A limiting guide post (303) is inserted into the interior of the limiting guide hole (302), and the limiting guide post (303) is fixedly mounted on the outer wall of the first retaining frame (203).

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