Mounting structure of drill bit module of roller drilling machine

Abstract

The utility model discloses a mounting structure of a drill bit module of a roller drilling machine, which comprises a roller, a bottom plate is arranged at the bottom of the roller, two symmetrical openings are arranged on the bottom plate, two mounting tables are arranged on the upper bottom surface of the bottom plate, two clamping tables are arranged on the inner side wall of a roller body, and a toothed plate is arranged at each opening. One ends of the two toothed plates extend to the center of the bottom plate to be stacked and locked and fixed through a locking piece, limiting tables are arranged on the back faces of the toothed plates, and the limiting tables extend into the roller, are clamped by the clamping tables and the mounting tables and then are fixed through fasteners. The bottom plate with the opening is arranged at the bottom of the roller, the two toothed plates are detachably mounted on the bottom plate, the clamping table and the mounting table are arranged to form the circumferential clamping structure, the limiting tables arranged on the toothed plates extend into the clamping structure for circumferential limiting, and finally the toothed plates are fixed through the locking pieces and the fastening pieces. The fixing device is simple in structure, stable in fixing and capable of being rapidly detached and replaced, and in addition, the fasteners are hidden inside, so that abrasion during breaking can be reduced.

Description

Technical Field

[0001] The utility model relates to a drill bit for a roller drill rig, in particular to an installation structure of a drill bit module of a roller drill rig. Background Art

[0002] The rotary drilling rig is a construction technology suitable for hole forming operations in building foundation projects. It is widely used in foundation construction projects such as municipal construction, highway bridges, and high-rise buildings. With different drill bits, it is suitable for dry (short helix) or wet (rotary bucket) and rock layer hole forming operations.

[0003] The patent with the application number 202011514331.9 discloses a novel rotary drilling bit device with improved precision. A tooth plate device is arranged below the lower bottom plate (5) of the device. The tooth plate device includes pick teeth (22), square seats (23), and welded tooth plates (24). The pick teeth (22) are arranged on the welded tooth plates (24), and the square pick teeth (22) are clamped at the bottom of the square seats (23).

[0004] Since the small drill bit at the bottom is extremely easy to be worn during the drilling operation and needs to be replaced after wear, a detachable structure needs to be set to fix the small drill bit at the bottom. In the above patent, a tooth plate is arranged below the lower bottom plate and broken by the pick teeth on the tooth plate. The tooth plate is fixed by welding. In this way, it is not convenient to replace the pick teeth after wear. Content of the Utility Model

[0005] Based on the deficiency that the tooth plate is fixed by welding in the prior art, which is not convenient to replace the pick teeth after wear, the utility model provides an installation structure of a drill bit module of a roller drill rig.

[0006] The technical solution adopted by the utility model to solve the above technical problems is as follows:

[0007] The installation structure of the drill bit module of the roller drill rig includes a roller. A bottom plate is arranged at the bottom of the roller. Two symmetrical openings are arranged on the bottom plate. Two installation platforms are arranged on the upper bottom surface of the bottom plate, and two clamping platforms are arranged on the inner side wall of the cylinder body. A tooth plate is arranged at each of the two openings. One end of the two tooth plates extends to the center of the bottom plate, is stacked, and is locked and fixed by a locking member. A limiting platform is arranged on the back surface of the tooth plate. The limiting platform extends into the roller and is clamped by the clamping platform and the installation platform and then fixed by a fastening member.

[0008] Preferably, the tooth plate is a three-sector structure, and part of the opening is covered after installation.

[0009] Preferably, pick teeth are arranged on the tooth plate, and the centers of the pick teeth on the two tooth plates are centrosymmetric.

[0010] Preferably, the fastening member is a fastening bolt, which horizontally penetrates through the installation platform and extends into the limiting platform, and is in threaded fit with both the installation platform and the limiting platform.

[0011] Preferably, the screw head of the fastening bolt is located above the bottom plate.

[0012] Preferably, a mounting top plate is provided at the top of the drum, and a plurality of mounting holes are provided on the mounting top plate.

[0013] Preferably, the locking member is a locking bolt and a locking nut. The locking bolt passes through the two tooth plates and the bottom plate and is locked by the locking nut inside the drum.

[0014] Preferably, the screw head at the bottom of the locking bolt is of a conical structure.

[0015] Preferably, the side wall of the conical structure is provided with drilling threads.

[0016] Preferably, a linear first rack is provided on the bottom plate, and an axially extending second rack is provided on the side wall of the drum.

[0017] Compared with the prior art, the advantages of the present utility model are as follows: In this application, a bottom plate with an opening is provided at the bottom of the drum, two tooth plates are detachably mounted on the bottom plate, a circumferential clamping structure is formed by providing a clamping table and a mounting table, the limiting table provided on the tooth plate extends into the clamping structure for circumferential limiting, and finally the tooth plates are fixed by the locking member and the fastening member, with firm fixing and rapid disassembly and replacement. In addition, the fastening member is hidden inside, which can reduce the wear during crushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present utility model will be further described in detail below in conjunction with the drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are only drawn for the purpose of explaining the preferred embodiments and should not be construed as limiting the scope of the present utility model. In addition, unless otherwise specified, the drawings only schematically show the composition or structure of the described object and may include exaggerated displays, and the drawings are not necessarily drawn to scale.

[0019] Figure 1 is a perspective view of the present application;

[0020] Figure 2 is a bottom view of the present application;

[0021] Figure 3 is a perspective view of the present application;

[0022] Figure 4 is an exploded view of the present application;

[0023] Figure 5 is an exploded view of the present application;

[0024] In the figure: 10, drum; 101, bottom plate; 1011, opening; 1012, first rack; 1013, mounting table; 102, mounting top plate; 1021, mounting hole; 103, second rack; 104, clamping table; 20, tooth plate; 201, pick; 202, limiting table; 30, locking member; 301, locking bolt; 3011, conical structure; 302, locking bolt; 40, fastening bolt. Detailed implementation mode

[0025] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will understand that these descriptions are only descriptive and exemplary, and should not be construed as limiting the protection scope of the present invention.

[0026] It should be noted that similar reference numerals represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it may not be further defined and explained in subsequent drawings.

[0027] This embodiment mainly elaborates on the title of the installation structure of the drill bit module of the drum drill, specifically as follows:

[0028] The installation structure of the drill bit module of the drum drill, as Figures 1-5 shown, includes a drum 10. A bottom plate 101 is provided at the bottom of the drum 10. Two symmetrical openings 1011 are provided on the bottom plate 101. Two mounting tables 1013 are provided on the upper bottom surface of the bottom plate 101, and two clamping tables 104 are provided on the inner side wall of the cylinder body. One tooth plate 20 is provided at each of the two openings 1011. One ends of the two tooth plates 20 extend to the center of the bottom plate 101 and are stacked and locked and fixed by a locking member 30. A limiting table 202 is provided on the back surface of the tooth plate 20. The limiting table 202 extends into the drum 10 and is clamped by the clamping table 104 and the mounting table 1013 and then fixed by a fastening member 40. In this solution, by providing a bottom plate 101 with openings 1011 at the bottom of the drum 10, two tooth plates 20 are detachably installed on the bottom plate 101, and a circumferential clamping structure is formed by providing a clamping table 104 and a mounting table 1013. Then, by providing a limiting table 202 on the tooth plate 20 to extend into the clamping structure for circumferential positioning, and finally, the tooth plate 20 is fixed by a locking member 30 and a fastening member 40. The fixing is firm and can be quickly disassembled and replaced. In addition, the fastening member 40 is hidden inside, which can reduce wear during crushing.

[0029] Preferably, the tooth plate 20 is a three-sector structure, and after installation, it covers part of the openings 1011. The remaining openings 1011 after covering are used for inserting tools to install the fastening member 40.

[0030] Preferably, pick teeth 201 are provided on the tooth plates 20, and the centers of the pick teeth 201 on the two tooth plates 20 are symmetrically arranged. Preferably, pick teeth 201 are also provided at the bottom of the drum 10 in a uniformly distributed annular array, and each pick tooth 201 is used for breaking the formation.

[0031] Preferably, the fastener 40 is a fastening bolt, which horizontally penetrates through the mounting table 1013 and extends into the limiting table 202, and it is in threaded fit with both the mounting table 1013 and the limiting table 202. The fastening bolt is used to fix one end of the tooth plate 20 to the bottom plate 101.

[0032] Preferably, the screw head of the fastening bolt is located above the bottom plate 101. Only the screw head of the fastening bolt is exposed, and setting it above the bottom plate 101 can play a certain protective role for it. Because hard rocks, etc. will be encountered during initial crushing, and only the broken loose materials will be touched when it is located inside, the wear will be greatly reduced.

[0033] Preferably, a mounting top plate 102 is provided at the top of the drum 10, and a number of mounting holes 1021 are provided on the mounting top plate 102. The mounting holes 1021 are used for the installation and fixation of the drum 10.

[0034] Preferably, the locking member 30 is a locking bolt 301 and a locking nut 302. The locking bolt 301 passes through the two tooth plates 20 and the bottom plate 101 and is locked by the locking nut 302 inside the drum 10.

[0035] Preferably, the screw head at the bottom of the locking bolt 301 is a conical structure 3011. The screw head of the locking bolt 301 is set as the conical structure 3011 to assist in crushing, and even if it is worn, it still plays the role of drilling.

[0036] Preferably, the side wall of the conical structure 3011 is provided with threads for drilling. In this solution, setting the threads is more conducive to its drilling.

[0037] Preferably, a linear first rack 1012 is provided on the bottom plate 101, and a second rack 103 extending axially is provided on the side wall of the drum 10.

[0038] The above has introduced in detail the installation structure title of the drill bit module of the drum drill provided by the present utility model. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the present utility model and its core idea. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. The installation structure of the drill head module of the drum drill is characterized by: It includes a drum, a bottom plate is provided at the bottom of the drum, two symmetrical openings are provided on the bottom plate, two mounting platforms are provided on the upper bottom surface of the bottom plate and two clamping platforms are provided on the inner side wall of the cylinder, a tooth plate is provided at each of the two openings, one end of the two tooth plates extends to the center of the bottom plate, stacked and locked and fixed by a locking piece, a limit platform is provided on the back of the tooth plate, the limit platform extends into the interior of the drum and is clamped by the clamping platform and the mounting platform and then fixed by a fastener.

2. The installation structure of the drill head module of the drum drill according to claim 1 is characterized in that: The tooth plate is a three-sector structure, which will cover part of the opening after installation.

3. The installation structure of the drill head module of the drum drill according to claim 2 is characterized in that: The tooth plates are provided with picks, and the picks on the two tooth plates are symmetrical in center.

4. The installation structure of the drill head module of the drum drill according to claim 1, characterized in that: The fastener is a fastening bolt, which horizontally penetrates the mounting platform and extends into the limiting platform, and is threadedly matched with the mounting platform and the limiting platform.

5. The installation structure of the drill head module of the drum drill according to claim 4, characterized in that: The screw heads of the fastening bolts are located above the base plate.

6. The installation structure of the drill head module of the drum drill according to claim 1, characterized in that: A mounting top plate is arranged on the top of the drum, and a plurality of mounting holes are arranged on the mounting top plate.

7. The installation structure of the drill head module of the drum drill according to claim 1, characterized in that: The locking parts are locking bolts and locking nuts. The locking bolts pass through the two tooth plates and the bottom plate and are locked inside the drum by the locking nuts.

8. The installation structure of the drill head module of the drum drill according to claim 7, characterized in that: The screw head at the bottom of the locking bolt is a conical structure.

9. The installation structure of the drill head module of the drum drill according to claim 8, characterized in that: The side wall of the conical structure is provided with a drilling thread.

10. The installation structure of the drill head module of the drum drill according to claim 1, characterized in that: A first linear rack is arranged on the bottom plate, and a second rack extending axially is arranged on the side wall of the drum.

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