Drilling device with drill barrel and drill bit convenient to replace

Abstract

The utility model relates to the technical field of engineering drills, in particular to a drilling device with a drill barrel and a drill bit convenient to replace, which comprises a thread drill bit, a drill barrel assembly, an adapter flange, a locking flange, a gearbox assembly, a water inlet sleeve, a hollow water passing shaft, a rotation stopping limiting ring, a rear cover, a water inlet barrel, a front cover, a shaft rear check ring, a drill barrel flange, a drill barrel and a thread connector. By means of the locking flange, the situation that the taper meshing face is damaged due to the fact that the adapter flange moves towards the tail end of the device due to rotation of the drill cylinder assembly when the device works can be effectively prevented, the adapter flange is additionally arranged, and the adapter flange can be taken out only by disassembling the connecting bolt with the concave-convex face in the disassembling process; the adapter flange and the drill cylinder flange are in radial close fit through the concave-convex table, so that more force brought by rotation acts on the side face of the concave-convex end, connection of the device is facilitated, damage to a connected bolt in the radial direction is avoided, the connected bolt is protected, and the difficulty of manual disassembly is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering drilling technology field, concretely is a drilling device convenient for replacing drill cylinder drill bit. BACKGROUND

[0002] In the field of mine exploitation, tunnel construction and the like, the drilling device is the key equipment for various drilling operations, and its performance and ease of use directly affect the efficiency and quality of the project. In actual engineering operations, the drill cylinder and the drill bit are prone to wear and damage due to frequent use, and need to be replaced in time. The existing drilling device has many deficiencies in the replacement of the drill cylinder and the drill bit. On the one hand, the connection between the drill cylinder and other components of the traditional drilling device is mostly achieved by direct connection through threads or bolts. During drilling, the rotation of the drill cylinder generates various forces, which can adversely affect the connecting components. For example, direct connection through bolts can cause the connecting bolts to bear excessive radial force, which can easily cause the bolts to deform and damage, and connection through threads / taper can make the thread / taper connection become tighter and tighter, which not only damages the threads and reduces the service life of the device, but also takes more time and effort to disassemble, and has certain deficiencies. SUMMARY

[0003] The utility model aims at providing a drilling device convenient for replacing the drill cylinder and the drill bit to solve the above technical problems.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a drilling device convenient for replacing the drill cylinder and the drill bit, comprising a hollow water passage shaft and a gear box assembly, the hollow water passage shaft is installed through the gear box assembly, one end of the hollow water passage shaft is provided with a water inlet sleeve, the other end is provided with a drill cylinder assembly, one end of the hollow water passage shaft is fixedly connected with an adapter flange, one end face of the adapter flange is provided with a groove, so that one end of the adapter flange forms a boss and a clamping groove, the drill cylinder assembly comprises a drill cylinder, one end of the drill cylinder is fixedly connected with a drill cylinder flange, the other end is fixedly connected with a thread joint, the thread joint is provided with a thread drill bit, one end face of the drill cylinder flange is also provided with a groove, so that one end of the drill cylinder flange forms a boss and a clamping groove, the boss of the drill cylinder flange is matched with the clamping groove of the adapter flange, the boss of the adapter flange is matched with the clamping groove of the drill cylinder flange, a plurality of bolt holes are formed in the drill cylinder flange and the adapter flange, and the drill cylinder flange and the adapter flange are connected through bolts.

[0005] Preferably, the tooth box assembly comprises a tooth box, a driven gear, a transition gear and a driving gear, the transition gear and the driving gear are installed in the tooth box through a shaft and a bearing, the transition gear and the driving gear are engaged, the driven gear is fixedly sleeved on a hollow water passing shaft, the hollow water passing shaft penetrates through the tooth box at both ends, the driven gear is engaged with the transition gear, a driving motor is installed outside the tooth box, the output end of the motor is connected with the driving gear, and mounting racks are arranged on both sides of the tooth box shell and used for mounting the device on a drilling frame of engineering equipment.

[0006] Preferably, the hollow water passing shaft is threadedly sleeved with a locking flange, the adapter flange is taperingly connected with the hollow water passing shaft, the locking flange is arranged adjacent to the adapter flange, the adapter flange is taperingly connected with the hollow water passing shaft, the locking flange is threadingly connected with the hollow water passing shaft, and the locking flange and the adapter flange are connected through bolts.

[0007] Preferably, the water inlet sleeve is composed of a rotation-stopping limiting ring, a rear cover, a water inlet cylinder and a front cover, the rear limiting ring is fixedly installed at the end of the hollow water passing shaft, the rotation-stopping limiting ring is fixed on the end of the water inlet cylinder, the water inlet cylinder is sleeved on the hollow water passing shaft through a bearing, the water inlet cylinder is provided with a water inlet nozzle, the rear cover and the front cover are fixedly installed at the two ends of the water inlet cylinder, the rotation-stopping limiting ring is provided with a blocking lug on each side, and the blocking lug is in contact with the mounting rack.

[0008] Preferably, the boss at one end of the drill cylinder flange is provided with a water inlet hole, the other end is provided with an annular water groove, the water inlet hole is communicated with the annular water groove, the inner wall of the adapter flange is provided with an annular groove, a plurality of water inlet holes are arranged in the annular groove, a plurality of water channels communicated with the water inlet holes are arranged in the concave surface of the adapter flange, the hollow water passing shaft, the drill cylinder, the adapter flange, the thread drill bit and the drill cylinder flange are all provided with water channels, the hollow water passing shaft is provided with a water inlet hole, the thread drill bit is provided with a water outlet hole, and the water channels of the hollow water passing shaft, the drill cylinder, the adapter flange, the thread drill bit and the drill cylinder flange are communicated with the water inlet hole on the tooth box shaft and the water outlet hole on the core drill bit.

[0009] Compared with the prior art, the device has the following beneficial effects:

[0010] The device has the advantages that the locking flange can effectively prevent the device from being damaged due to the rotation of the drill cylinder assembly and the movement of the adapter flange to the tail end of the device to cause the taper engagement surface to be damaged during work, the adapter flange is increased, and the adapter flange and the drill cylinder flange are radially tightly matched through the concave-convex boss design, so that the force brought by rotation is more applied to the side surface of the concave-convex end, the connection of the device is facilitated, the radial damage to the connecting bolt is avoided, the connecting bolt is protected, and the difficulty of manual disassembly is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 The utility model discloses a three-dimensional structure schematic diagram;

[0012] Figure 2 is an exploded view of the drill cylinder assembly of the utility model;

[0013] Figure 3 is a sectional view of the utility model;

[0014] Figure 4 is a perspective view of the adapter flange of the utility model;

[0015] Figure 5 is a perspective view of the drill cylinder flange of the utility model.

[0016] In the figure: 1, wire drill bit; 2, drill cylinder assembly; 3, adapter flange; 4, locking flange; 5, gear box assembly; 6, water inlet sleeve; 7, hollow water passage shaft; 601, rotation limiting ring; 602, rear cover; 603, water inlet cylinder; 604, front cover; 605, shaft rear stop ring; 201, drill cylinder flange; 202, drill cylinder; 203, wire joint. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the utility model.

[0018] Please refer to Figures 1 to 5The utility model provides technical scheme: a kind of drilling device of drill cylinder drill bit convenient to replace, including hollow water shaft 7 and tooth box assembly 5, hollow water shaft 7 is installed on tooth box assembly 5, one end of hollow water shaft 7 is equipped with water inlet sleeve 6, the other end is equipped with drill cylinder assembly 2, one end of hollow water shaft 7 is fixedly connected with adapter flange 3, one end surface of adapter flange 3 is equipped with recess, so that the end of adapter flange 3 forms boss and clamping groove, drill cylinder assembly 2 includes drill cylinder 202, one end of drill cylinder 202 is fixedly connected with drill cylinder flange 201, the other end is fixedly connected with wire teeth joint 203, wire teeth joint 203 is equipped with wire teeth drill bit 1, wire teeth drill bit 1 is connected with drill cylinder flange 201 wire teeth, it is convenient to replace wire teeth drill bit, consumable cost is reduced for customer, the end surface of drill cylinder flange 201 is also provided with recess, so that the end of drill cylinder flange 201 forms boss and clamping groove, the boss of drill cylinder flange 201 cooperates with the clamping groove of adapter flange 3, the boss of adapter flange 3 cooperates with the clamping groove of drill cylinder flange 201, drill cylinder flange 201 and adapter flange 3 are equipped with multiple bolt holes, drill cylinder flange 201 and adapter flange 3 are connected by bolt, the boss of adapter flange 3 cooperates with the clamping groove of drill cylinder flange 201 recess and convex cooperation place is equipped with two bolt fixings, hollow water shaft 7 is threadedly sleeved with locking flange 4, adapter flange 3 is taper connection with hollow water shaft 7, locking flange 4 is connected with hollow water shaft 7 wire teeth, locking flange 4 is connected with adapter flange 3 by bolt, locking flange 4 is adjacently arranged with adapter flange 3, locking flange 4 can effectively prevent the device from being damaged due to the taper bite surface caused by the movement of adapter flange 3 to the tail end of the device due to the rotation of drill cylinder assembly 2 when working, by increasing adapter flange 3, drill cylinder assembly 2 is separated from hollow water shaft 7, when disassembling, only need to remove the connecting bolt of recess and convex surface to take out, adapter flange 3 and drill cylinder flange 201 are tightly matched by recess and convex platform radially, so that the force brought by rotation acts more on the side surface of recess and convex end, which is convenient for the connection of the device, and will not cause radial damage to the connecting bolt, protecting the connecting bolt, greatly reducing the difficulty of manual disassembly.

[0019] Further, the tooth box assembly 5 includes a tooth box, a driven gear, a transition gear, and a driving gear. The transition gear and the driving gear are installed in the tooth box through a shaft and a bearing. The transition gear and the driving gear are engaged. The driven gear is fixedly sleeved on the hollow water shaft 7. The hollow water shaft 7 penetrates the tooth box at both ends. The driven gear is engaged with the transition gear. A driving motor is installed outside the tooth box. The output end of the motor is connected with the driving gear. The both sides of the tooth box shell are provided with mounting racks for mounting the device on the drilling frame of engineering equipment.

[0020] Further, the water inlet sleeve 6 is composed of a rotation-stopping limiting ring 601, a rear cover 602, a water inlet cylinder 603 and a front cover 604, the hollow water passing shaft 7 is fixedly installed with a shaft rear stop ring 605 at the end, the rotation-stopping limiting ring 601 is fixed at the end of the water inlet cylinder 603, the water inlet cylinder 603 is connected on the hollow water passing shaft 7 through a bearing sleeve, the water inlet cylinder 603 is provided with a water inlet nozzle, the water inlet nozzle is used for connecting an external water pipe, the rear cover 602 and the front cover 604 are fixedly installed at two ends of the water inlet cylinder 603, the rotation-stopping limiting ring 601 is provided with a stop lug at two sides, the stop lug is in contact with a mounting frame, the rotation-stopping limiting ring 601 can avoid the water inlet cylinder 603 from rotating with the hollow water passing shaft 7, the boss of the drill cylinder flange 201 is provided with a water inlet hole at one end and an annular water groove at the other end, the water inlet hole is communicated with the annular water groove, the inner wall of the adapter flange 3 is provided with an annular groove, a plurality of water inlet holes are formed in the annular groove, the water in each water hole can be injected into the water hole of the drill cylinder 202, the concave surface of the adapter flange 3 is provided with a plurality of water channels communicated with the water inlet holes, the hollow water passing shaft 7, the drill cylinder 202, the adapter flange 3, the wire tooth drill bit 1 and the drill cylinder flange are all provided with water channels, the hollow water passing shaft 7 is provided with a water inlet hole, the wire tooth drill bit 1 is provided with a water outlet hole, the water channels of the hollow water passing shaft 7, the drill cylinder 202, the adapter flange 3, the wire tooth drill bit 1 and the drill cylinder flange are communicated with the water inlet hole on the core box shaft 11 and the water outlet hole on the core drill bit 1, which can reduce dust and noise in the working environment, protect the wire tooth drill bit 1 at the front end and prolong the service life.

[0021] The basic principle, main features and advantages of the present application are shown and described above. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A drilling device for facilitating replacement of a drill bit of a drill string, comprising a hollow water passage shaft (7) and a gearbox assembly (5), the hollow water passage shaft (7) being mounted through the gearbox assembly (5), the hollow water passage shaft (7) having a water inlet sleeve (6) mounted at one end and a drill string assembly (2) mounted at the other end, characterised in that: One end of the hollow water shaft (7) is fixedly connected with an adapter flange (3), one end face of the adapter flange (3) is provided with a groove, so that the one end of the adapter flange (3) forms a boss and a clamping groove, the drill cylinder assembly (2) comprises a drill cylinder (202), one end of the drill cylinder (202) is fixedly connected with a drill cylinder flange (201), the other end is fixedly connected with a thread joint (203), a thread drill bit (1) is installed on the thread joint (203), the one end face of the drill cylinder flange (201) is also provided with a groove, so that the one end of the drill cylinder flange (201) forms a boss and a clamping groove, the boss of the drill cylinder flange (201) is matched with the clamping groove of the adapter flange (3), the boss of the adapter flange (3) is matched with the clamping groove of the drill cylinder flange (201), and the drill cylinder flange (201) and the adapter flange (3) are connected through bolts.

2. The drilling apparatus of claim 1, wherein: The drill box assembly (5) comprises a drill box, a driven gear, a transition gear and a driving gear, the transition gear and the driving gear are installed in the drill box through a shaft and a bearing, the transition gear and the driving gear are engaged, the driven gear is fixedly sleeved on the hollow water shaft (7), the hollow water shaft (7) penetrates the drill box at both ends, the driven gear is engaged with the transition gear, a driving motor is installed outside the drill box, the output end of the motor is connected with the driving gear, and mounting racks for mounting the device on the drilling frame of the engineering equipment are arranged on both sides of the drill box shell.

3. The drilling apparatus of claim 1, wherein: The water inlet sleeve (6) is composed of a rotation-stopping limiting ring (601), a rear cover (602), a water inlet cylinder (603) and a front cover (604), the hollow water shaft (7) is fixedly installed with an axle rear blocking ring (605) at the end, the rotation-stopping limiting ring (601) is fixed at the end of the water inlet cylinder (603), the water inlet cylinder (603) is sleeved on the hollow water shaft (7) through a bearing, the water inlet cylinder (603) is provided with a water inlet nozzle, and the rear cover (602) and the front cover (604) are fixedly installed at both ends of the water inlet cylinder (603).

4. The drilling apparatus of claim 1, wherein: The boss at one end of the drill cylinder flange (201) is provided with a water inlet hole, and the other end is provided with an annular water groove, the water inlet hole is communicated with the annular water groove, an annular groove is formed in the inner wall of the adapter flange (3), a plurality of water inlet holes are formed in the annular groove, and a plurality of water channels communicated with the water inlet holes are arranged in the concave surface of the adapter flange (3).

5. The drilling apparatus of claim 1, wherein: The hollow water shaft (7) is threadedly sleeved with a locking flange (4), the adapter flange (3) is taper-connected with the hollow water shaft (7), the locking flange (4) is thread-connected with the hollow water shaft (7), and the locking flange (4) is connected with the adapter flange (3) through bolts.

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