Adjustable reamer bit

Abstract

The utility model relates to the technical field of building construction, and discloses an adjustable reamer bit which comprises a replacement structure and a trepanning structure, the trepanning structure is clamped in the replacement structure, the replacement structure comprises a driving motor, a rotating rod is arranged at the output end of the driving motor, a mounting seat is fixedly connected to the bottom of the rotating rod, and the mounting seat is fixedly connected to the bottom of the rotating rod. A sliding frame is pulled upwards, so that a fixing block is separated from a positioning groove, a connecting rod is pulled outwards, the connecting rod drives a clamping plate to move outwards, meanwhile, limiting and fixing of a drill bit body are relieved, disassembly of the drill bit body is completed, the drill bit is convenient to disassemble and replace, the structure is simple, assembly and disassembly are convenient, and practicability is high; and a reset spring drives a clamping plate to move inwards to clamp and fix the drill bit body, and a strong spring drives a sliding frame to move downwards, so that a fixing block at the bottom of the sliding frame is clamped into a positioning groove, and the stability when a driving motor drives the drill bit body to broach through a rotating rod is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to an adjustable hole-reaming drill bit. Background Art

[0002] During the construction of the foundation pile pit, if the site suddenly finds that the drill bit diameter does not match the drawing or the design requirements are suddenly changed during the construction process and the foundation pile pit needs to be expanded, the site can only switch to a special drill bit that meets the diameter requirements for construction. This conversion greatly wastes construction time and has a serious impact on the overall construction progress. In a construction site where the construction progress is calculated in days, it will have a great impact on the construction party;

[0003] According to the "A Hole Reaming Drill Bit" disclosed in Chinese Patent Publication No. CN216043536U, the telescopic shaft is pushed by the square shaft to push out the hole expanding blade. The operation is simpler and the use is more convenient. The hole expansion shape is more consistent with the expansion point of the anchor bolt, thereby increasing the fitting area between the anchor bolt and the hole wall and enhancing the pulling force of the anchor bolt. During use, the limit plate fits with the wall surface that needs to be expanded, and blocks dust overflow while locating the expansion point, reducing the pollution to the construction workers and the environment during construction. By setting the knife edge groove, the knife edge groove is matched with the protruding point on the inner wall of the long hole of the drill bit to push out the hole expanding blade, so that the hole expanding blade is stably opened and its service life is enhanced.

[0004] However, the above device has the problems of rapid wear of the drill bit, inconvenience in replacing the drill bit, and troublesome disassembly and installation. Utility Model Content

[0005] The purpose of the utility model is to provide an adjustable reaming drill bit to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: an adjustable hole-reaming drill bit, comprising a replacement structure and a hole-opening structure, wherein the hole-opening structure is clamped inside the replacement structure;

[0007] The replacement structure includes a driving motor, a rotating rod is provided at the output end of the driving motor, a mounting seat is fixedly connected to the bottom of the rotating rod, a mounting groove is provided inside the mounting seat, a clamping plate is provided inside the mounting groove, a connecting rod is fixedly connected to the bottom of the clamping plate, and a sliding plate is fixedly connected to the end of the connecting rod away from the clamping plate.

[0008] Preferably, a sliding frame is slidably sleeved on the outer side of the sliding plate, a fixing block is fixedly installed on the bottom of the sliding frame, positioning grooves are formed at both ends of the top of the mounting seat, and the fixing block is movably engaged in the positioning grooves.

[0009] Preferably, a return spring is fixedly connected to the bottom of the card plate, and the bottom of the return spring is fixedly connected to the inner wall of the mounting seat. A strong spring is fixedly connected to the bottom of the sliding plate, and the bottom of the strong spring is fixedly connected to the inner wall of the sliding frame.

[0010] Preferably, the connecting rod is in an "L" shape, and one end of the connecting rod away from the clamping plate passes through the inner wall of the mounting seat and extends to the outside.

[0011] Preferably, the hole opening structure includes a drill body, a knob is provided at the bottom of the drill body, an adjusting rod is fixedly connected to the bottom of the knob, the end of the adjusting rod away from the knob is fixedly connected to a first bevel gear, the outer surface of the first bevel gear is meshed with a second bevel gear, the inside of the second bevel gear is fixedly connected with a bidirectional screw, and the outer surface of the bidirectional screw is threadedly connected with a reaming blade.

[0012] Preferably, one end of the adjusting rod away from the knob passes through the bottom of the drill body and extends to the inside, and the adjusting rod is rotatably connected to the drill body.

[0013] Preferably, a positioning groove is provided on the top plate of the drill body, and the shape and size of the positioning groove are adapted to the clamping plate.

[0014] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0015] First, the utility model pulls the slide frame upward to disengage the fixed block from the positioning groove, pulls the connecting rod outward, and the connecting rod drives the clamping plate to move outward, and at the same time releases the limit fixation of the drill body, completes the disassembly of the drill body, and is convenient for disassembly and replacement of the drill bit. The structure is simple, the loading and unloading is convenient, and the practicality is strong. By inserting the top of the drill body into the mounting seat, the reset spring drives the clamping plate to move inward, the drill body is clamped and fixed, and the strong spring drives the slide frame downward to make the fixed block at the bottom of the slide frame clamped in the positioning groove, which increases the stability of the drive motor when driving the drill body to expand the hole through the rotating rod.

[0016] Second, the utility model rotates the knob to drive the adjusting rod to rotate, and the rotating adjusting rod drives the first bevel gear to rotate, and the rotation of the first bevel gear drives the second bevel gear meshing with it to rotate, and also drives the two-way screw to rotate, and the rotation of the two-way screw drives the reaming blade to move, and the distance between the reaming blades can be adjusted by rotating the knob forward and backward, so that the staff can adjust the reaming according to the size of the hole on the workpiece to be processed. The operation is simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0019] Figure 3 For the utility model Figure 2 A schematic diagram of the structure at point A;

[0020] Figure 4 For the utility model Figure 2 Enlarged schematic diagram of the structure at point B.

[0021] Wherein: 1. Replacement structure; 101. Drive motor; 102. Rotating rod; 103. Mounting seat; 104. Mounting slot; 105. Clamping plate; 106. Connecting rod; 107. Sliding plate; 108. Sliding frame; 109. Fixed block; 110. Reset spring; 111. Strong spring; 2. Opening structure; 201. Drill body; 202. Knob; 203. Adjusting rod; 204. First bevel gear; 205. Second bevel gear; 206. Bidirectional screw; 207. Hole expansion blade. DETAILED DESCRIPTION

[0022] 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.

[0023] The utility model provides the following technical solutions:

[0024] Embodiment 1

[0025] See also Figure 1-4 , an adjustable reaming drill bit, comprising a replacement structure 1 and a hole opening structure 2, wherein the hole opening structure 2 is clamped inside the replacement structure 1;

[0026] The replacement structure 1 includes a driving motor 101, a rotating rod 102 is provided at the output end of the driving motor 101, a mounting seat 103 is fixedly connected to the bottom of the rotating rod 102, a mounting groove 104 is opened inside the mounting seat 103, a clamping plate 105 is provided inside the mounting groove 104, a connecting rod 106 is fixedly connected to the bottom of the clamping plate 105, and a sliding plate 107 is fixedly connected to the end of the connecting rod 106 away from the clamping plate 105.

[0027] A sliding frame 108 is slidably sleeved on the outer side of the sliding plate 107, a fixing block 109 is fixedly installed on the bottom of the sliding frame 108, and positioning grooves are opened at both ends of the top of the mounting seat 103, and the fixing block 109 is movably engaged in the positioning grooves.

[0028] A return spring 110 is fixedly connected to the bottom of the card plate 105 , and the bottom of the return spring 110 is fixedly connected to the inner wall of the mounting seat 103 . A strong spring 111 is fixedly connected to the bottom of the sliding plate 107 , and the bottom of the strong spring 111 is fixedly connected to the inner wall of the sliding frame 108 .

[0029] The connecting rod 106 is in an “L” shape, and one end of the connecting rod 106 away from the clamping plate 105 passes through the inner wall of the mounting seat 103 and extends to the outside.

[0030] Through the above technical solution, by pulling the slide frame 108 upwards, the fixed block 109 is disengaged from the positioning groove, and the connecting rod 106 is pulled outwards, the connecting rod 106 drives the clamping plate 105 to move outwards, and at the same time releases the limit fixation of the drill body 201, completes the disassembly of the drill body 201, and facilitates the disassembly and replacement of the drill bit. The structure is simple, the loading and unloading is convenient, and the practicability is strong. By inserting the top of the drill body 201 into the mounting seat 103, the reset spring 110 drives the clamping plate 105 to move inward, and the drill body 201 is clamped and fixed. The strong spring 111 drives the slide frame 108 to move downward, so that the fixed block 109 at the bottom of the slide frame 108 is clamped in the positioning groove, which increases the stability of the drive motor 101 when driving the drill body 201 to expand the hole through the rotating rod 102.

[0031] Embodiment 2

[0032] See also Figure 1-4 , and on the basis of the first embodiment, further obtained: an adjustable reaming drill bit, comprising a replacement structure 1 and a hole opening structure 2, wherein the hole opening structure 2 is clamped inside the replacement structure 1;

[0033] The replacement structure 1 includes a driving motor 101, a rotating rod 102 is provided at the output end of the driving motor 101, a mounting seat 103 is fixedly connected to the bottom of the rotating rod 102, a mounting groove 104 is opened inside the mounting seat 103, a clamping plate 105 is provided inside the mounting groove 104, a connecting rod 106 is fixedly connected to the bottom of the clamping plate 105, and a sliding plate 107 is fixedly connected to the end of the connecting rod 106 away from the clamping plate 105.

[0034] The hole-opening structure 2 includes a drill body 201, a knob 202 is provided at the bottom of the drill body 201, an adjusting rod 203 is fixedly connected to the bottom of the knob 202, an end of the adjusting rod 203 away from the knob 202 is fixedly connected to a first bevel gear 204, a second bevel gear 205 is meshed on the outer surface of the first bevel gear 204, a bidirectional screw 206 is fixedly connected inside the second bevel gear 205, and a reaming blade 207 is threadedly connected to the outer surface of the bidirectional screw 206.

[0035] One end of the adjusting rod 203 away from the knob 202 passes through the bottom of the drill body 201 and extends to the inside. The adjusting rod 203 is rotatably connected to the drill body 201 .

[0036] A positioning groove is provided on the top plate of the drill body 201 , and the shape and size of the positioning groove are adapted to the clamping plate 105 .

[0037] Through the above technical solution, by rotating the knob 202, the knob 202 drives the adjusting rod 203 to rotate, and the rotating adjusting rod 203 drives the first bevel gear 204 to rotate. The rotation of the first bevel gear 204 drives the second bevel gear 205 meshing therewith to rotate, and also drives the bidirectional screw 206 to rotate. The rotation of the bidirectional screw 206 drives the reaming blade 207 to move. By rotating the knob 202 forward and backward, the distance between the reaming blades 207 is adjusted, so that the staff can adjust the reaming according to the size of the hole on the workpiece to expand the hole. The operation is simple and easy to use.

[0038] Although specific embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these specific embodiments without departing from the principles and spirit thereof, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable hole-reaming drill bit, comprising a replacement structure (1) and a hole-opening structure (2), characterized in that: The replacement structure (1) is internally clamped with an opening structure (2); The replacement structure (1) comprises a driving motor (101), wherein a rotating rod (102) is arranged at the output end of the driving motor (101), a mounting seat (103) is fixedly connected to the bottom of the rotating rod (102), a mounting groove (104) is provided inside the mounting seat (103), a clamping plate (105) is arranged inside the mounting groove (104), a connecting rod (106) is fixedly connected to the bottom of the clamping plate (105), and a sliding plate (107) is fixedly connected to one end of the connecting rod (106) away from the clamping plate (105).

2. The adjustable reaming drill bit according to claim 1, characterized in that: A sliding frame (108) is slidably sleeved on the outer side of the sliding plate (107), a fixing block (109) is fixedly installed on the bottom of the sliding frame (108), and positioning grooves are provided at both ends of the top of the mounting seat (103), and the fixing block (109) is movably engaged in the positioning grooves.

3. The adjustable reaming drill bit according to claim 1, characterized in that: The bottom of the card plate (105) is fixedly connected to a return spring (110), and the bottom of the return spring (110) is fixedly connected to the inner wall of the mounting seat (103). The bottom of the sliding plate (107) is fixedly connected to a strong spring (111), and the bottom of the strong spring (111) is fixedly connected to the inner wall of the sliding frame (108).

4. The adjustable reaming drill bit according to claim 1, characterized in that: The connecting rod (106) is in an "L" shape, and one end of the connecting rod (106) away from the clamping plate (105) passes through the inner wall of the mounting seat (103) and extends to the outside.

5. The adjustable reaming drill bit according to claim 1, characterized in that: The hole-opening structure (2) comprises a drill body (201), a knob (202) being arranged at the bottom of the drill body (201), an adjusting rod (203) being fixedly connected to the bottom of the knob (202), a first bevel gear (204) being fixedly connected to one end of the adjusting rod (203) away from the knob (202), a second bevel gear (205) being meshed on the outer surface of the first bevel gear (204), a bidirectional screw (206) being fixedly connected inside the second bevel gear (205), and a hole-reaming blade (207) being threadedly connected to the outer surface of the bidirectional screw (206).

6. The adjustable reaming drill bit according to claim 5, characterized in that: One end of the adjusting rod (203) away from the knob (202) passes through the bottom of the drill body (201) and extends to the inside, and the adjusting rod (203) is rotatably connected to the drill body (201).

7. The adjustable reaming drill bit according to claim 5, characterized in that: The top plate of the drill body (201) is provided with a positioning groove, and the shape and size of the positioning groove are adapted to the clamping plate (105).

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