Adjustable rotary drilling machine

Abstract

The utility model provides an adjustable rotary drilling machine, which belongs to the technical field of rotary drilling machines and is provided with a first fixing plate, the first fixing plate is rotatably connected with a screw rod, two limiting rings are fixedly mounted on the screw rod and are respectively abutted against the top wall and the bottom wall of the first fixing plate, and the first fixing plate is fixedly connected with the screw rod. The threaded rod is sleeved with a threaded sleeve in threaded connection with the threaded rod, and a plurality of second connecting plates are fixedly installed on the circumferential face of the threaded sleeve at equal intervals. A plurality of guide grooves are formed in the positions, corresponding to the second connecting plates, of the first fixing plate, first connecting plates extending downwards are slidably connected into the guide grooves, the first connecting plates and the second connecting plates move synchronously, and drill bit bodies are fixedly installed on the first connecting plates; an adjusting groove is formed in the bottom wall of the drill bit body, a rack is slidably connected into the adjusting groove, and rotary excavating teeth are fixedly installed at the bottom of the rack. The technical problems that only two drill bit bodies are arranged, the number of the drill bits is fixed and inconvenient to adjust, and use scenes are limited are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotary drilling machines, and in particular relates to an adjustable rotary drilling machine. Background Art

[0002] The rotary drilling machine is a drilling equipment commonly used in construction projects. It has less drilling auxiliary time, low labor intensity, no need for mud circulation and slag removal, and saves costs. It is particularly suitable for the foundation construction of urban construction.

[0003] The Chinese utility model patent application number: CN201921199395.7 (publication number: CN210798855U) discloses a radius adjustment device for a rotary drilling machine, comprising a first fixing plate, both sides of the first fixing plate are provided with first long holes, and a first connecting plate is arranged inside the first long hole, one side of the first connecting plate is fixedly connected to a drill body, a rotating mechanism is arranged at the bottom of the first fixing plate, a second fixing plate is arranged at the top of the first fixing plate, and both sides of the second fixing plate are provided with second long holes;

[0004] The above patent only has two drill bodies, and the number of drill bits is fixed and not easy to adjust, which limits the usage scenarios. Utility Model Content

[0005] In view of this, the utility model provides an adjustable rotary drilling rig, which is used to solve the technical problem that the above-mentioned patent is only provided with two drill bodies, the number of drill bits is fixed and it is not convenient to adjust, resulting in limited usage scenarios.

[0006] The utility model is achieved in this way:

[0007] The utility model provides an adjustable rotary drilling machine, comprising a first fixed plate, wherein a screw is rotatably connected to the middle of the first fixed plate, a threaded sleeve is sleeved on the screw and threadedly connected thereto, and a plurality of second connecting plates are fixedly installed at equal intervals on the circumferential surface of the threaded sleeve;

[0008] A plurality of guide grooves are provided on the first fixing plate at positions corresponding to the second connecting plate, and a first connecting plate extending downward is slidably connected in each of the guide grooves. The first connecting plate moves synchronously with the second connecting plate, and a drill body is fixedly mounted on each of the first connecting plates.

[0009] An adjusting groove is provided on the bottom wall of the drill bit body, a rack is vertically slidably connected in the adjusting groove, and a rotary excavation tooth is fixedly installed at the bottom of the rack.

[0010] On the basis of the above technical solution, the adjustable rotary drilling machine of the utility model can also be improved as follows:

[0011] Furthermore, the upper end of the second connecting plate is hinged to one end of an upper connecting rod, the other end of the upper connecting rod is hinged to the first connecting plate, the lower end of the second connecting plate is hinged to one end of a lower connecting rod, the other end of the lower connecting rod is hinged to the first connecting plate, and the upper connecting rod and the lower connecting rod have the same size and are arranged in parallel.

[0012] Furthermore, two limiting rings are fixedly mounted on the screw rod, and the two limiting rings are respectively in contact with the top wall and the bottom wall of the first fixing plate.

[0013] Furthermore, two sliding wheels are fixedly mounted on the top of the first connecting plate, and the sliding wheels are respectively located on the top wall and the bottom wall of the first fixed plate.

[0014] Furthermore, a rotation groove located at one side of the adjustment groove and communicated with the adjustment groove is opened in the drill body, a gear is rotatably connected in the rotation groove, and the gear is meshingly connected with the rack.

[0015] Furthermore, a driving motor is fixedly mounted on the outer wall of the drill body, an output shaft of the driving motor passes through the drill body and is rotatably connected thereto, and an end of the output shaft of the driving motor is fixedly connected to the middle of the gear.

[0016] Compared with the prior art, the utility model provides an adjustable rotary drilling machine with the following beneficial effects: by setting two limit rings, the screw is allowed to rotate in situ, driving the threaded sleeve to move up and down along the screw; by setting a second connecting plate, a first connecting plate, etc., the distance between the drill bit bodies is adjusted according to the required radius; by setting gears, racks, etc., the length of the rotary drilling teeth extending out of the drill bit body can be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is an axonometric diagram of the overall structure of an adjustable rotary drilling rig;

[0019] Figure 2 It is a side view of the overall structure of an adjustable rotary drilling machine;

[0020] Figure 3 It is a front view of the internal structure of a drill bit body of an adjustable rotary drilling machine;

[0021] Figure 4It is a bottom view of the internal structure of a drill bit body of an adjustable rotary drilling machine;

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1. First fixed plate; 10. Limiting ring; 11. Screw; 12. Guide groove; 13. Knob; 2. Threaded sleeve; 21. Second connecting plate; 23. Upper connecting rod; 24. Lower connecting rod; 3. Drill body; 30. Sliding wheel; 31. First connecting plate; 32. Adjusting groove; 33. Rotating groove; 4. Driving motor; 41. Rack; 42. Gear; 43. Rotary digging teeth. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined. Example 1

[0029] like Figure 1-4 As shown, the utility model provides an adjustable rotary drilling machine, comprising a first fixed plate 1, wherein a screw 11 is rotatably connected to the middle of the first fixed plate 1, a threaded sleeve 2 threadedly connected to the screw 11 is sleeved on the screw 11, and a plurality of second connecting plates 21 are fixedly installed at equal intervals on the circumferential surface of the threaded sleeve 2;

[0030] A plurality of guide grooves 12 are provided on the first fixing plate 1 at positions corresponding to the second connecting plate 21, and first connecting plates 31 extending downward are slidably connected in the guide grooves 12. The first connecting plates 31 move synchronously with the second connecting plates 21, and the drill body 3 is fixedly mounted on the first connecting plates 31;

[0031] An adjusting groove 32 is formed on the bottom wall of the drill body 3 , a rack 41 is vertically slidably connected in the adjusting groove 32 , and a rotary digging tooth 43 is fixedly mounted on the bottom of the rack 41 .

[0032] Optionally, in the above technical solution, the upper end of the second connecting plate 21 is hinged to one end of the upper connecting rod 23, the other end of the upper connecting rod 23 is hinged to the first connecting plate 31, the lower end of the second connecting plate 21 is hinged to one end of the lower connecting rod 24, the other end of the lower connecting rod 24 is hinged to the first connecting plate 31, and the upper connecting rod 23 and the lower connecting rod 24 are the same size and are arranged in parallel.

[0033] Optionally, in the above technical solution, two limit rings 10 are fixedly mounted on the screw rod 11 , and the two limit rings 10 are respectively in contact with the top wall and the bottom wall of the first fixing plate 1 .

[0034] Optionally, in the above technical solution, two sliding wheels 30 are fixedly installed on the top of the first connecting plate 31 , and the sliding wheels 30 are respectively located on the top wall and the bottom wall of the first fixed plate 1 .

[0035] Optionally, in the above technical solution, a rotating groove 33 located on one side of the adjusting groove 32 and connected to the adjusting groove 32 is opened in the drill body 3, and a gear 42 is rotatably connected in the rotating groove 33, and the gear 42 is meshed with the rack 41.

[0036] Optionally, in the above technical solution, a drive motor 4 is fixedly mounted on the outer wall of the drill body 3, an output shaft of the drive motor 4 passes through the drill body 3 and is rotatably connected thereto, and an end of the output shaft of the drive motor 4 is fixedly connected to the middle of the gear 42.

[0037] A knob 13 is fixedly mounted on the top of the screw rod 11 to facilitate the rotation of the screw rod 11 .

[0038] Working principle:

[0039] When in use, the screw rod 11 is rotated by the knob 13, and the original rotation of the screw rod 11 drives the threaded sleeve 2 to move up and down, and the second connecting plate 21 follows the threaded sleeve 2 to drive one end of the upper connecting rod 23 and the lower connecting rod 24 to move up and down, and the height position of the other end of the upper connecting rod 23 and the lower connecting rod 24 remains unchanged on the first connecting plate 31, then the angles of the upper connecting rod 23 and the lower connecting rod 24 relative to the threaded sleeve 2 will change at the same time, that is, the first connecting plate 31 is driven to move closer to or away from each other, thereby changing the radius of the plurality of drill body bodies 3;

[0040] After adjusting the radius of the drill bit body 3, the length of the rotary digging teeth 43 that need to extend out of the drill bit body 3 is adjusted, and the drive motor 4 is started to drive the gear 42 to rotate. The gear 42 drives the rack 41 meshing with it to move up and down, thereby driving the rotary digging teeth 43 to slide in the adjustment groove 32 until the rotary digging teeth 43 extend to a suitable length. The adjustment work is completed. At this time, the radius of each rotary digging tooth 43 and the length of the rotary digging teeth 43 extending out of the drill bit body 3 are all adjusted, and subsequent construction can be carried out.

[0041] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An adjustable rotary drilling machine, comprising a first fixing plate (1), characterized in that: A screw rod (11) is rotatably connected to the middle of the first fixing plate (1), a threaded sleeve (2) is sleeved on the screw rod (11) and is threadedly connected thereto, and a plurality of second connecting plates (21) are fixedly mounted at equal intervals on the circumferential surface of the threaded sleeve (2); A plurality of guide grooves (12) are provided on the first fixing plate (1) at positions corresponding to the second connecting plate (21), and a first connecting plate (31) extending downward is slidably connected in each of the guide grooves (12); the first connecting plate (31) moves synchronously with the second connecting plate (21), and a drill body (3) is fixedly mounted on each of the first connecting plates (31); The bottom wall of the drill bit body (3) is provided with an adjustment groove (32), a rack (41) is vertically slidably connected in the adjustment groove (32), and a rotary excavation tooth (43) is fixedly installed at the bottom of the rack (41).

2. The adjustable rotary drilling machine according to claim 1, characterized in that: The upper end of the second connecting plate (21) is hinged to one end of an upper connecting rod (23), the other end of the upper connecting rod (23) is hinged to the first connecting plate (31), the lower end of the second connecting plate (21) is hinged to one end of a lower connecting rod (24), the other end of the lower connecting rod (24) is hinged to the first connecting plate (31), and the upper connecting rod (23) and the lower connecting rod (24) have the same size and are arranged in parallel.

3. The adjustable rotary drilling machine according to claim 1, characterized in that: Two limiting rings (10) are fixedly mounted on the screw rod (11), and the two limiting rings (10) are respectively in contact with the top wall and the bottom wall of the first fixing plate (1).

4. The adjustable rotary drilling machine according to claim 3, characterized in that: Two sliding wheels (30) are fixedly mounted on the top of the first connecting plate (31), and the sliding wheels (30) are respectively located on the top wall and the bottom wall of the first fixing plate (1).

5. The adjustable rotary drilling machine according to claim 1, characterized in that: The drill body (3) is provided with a rotation groove (33) located on one side of the adjustment groove (32) and connected to the adjustment groove (32); a gear (42) is rotatably connected in the rotation groove (33); and the gear (42) is meshingly connected to the rack (41).

6. The adjustable rotary drilling machine according to claim 5, characterized in that: A drive motor (4) is fixedly mounted on the outer wall of the drill body (3); an output shaft of the drive motor (4) passes through the drill body (3) and is rotatably connected thereto; an end of the output shaft of the drive motor (4) is fixedly connected to the middle of the gear (42).

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