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Hole expanding device

A technology for grinding and driving shafts, which is used in cable installation devices, cable installation, drilling equipment and methods, etc., can solve problems such as affecting the reaming process, single hole shape, and debris cannot be smoothly discharged, and achieve reliability. The effect of high, low manufacturing cost and wide applicability

Inactive Publication Date: 2015-09-02
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The disadvantage of the above technical solution is: the shape of the hole obtained after reaming is single, all of which are cylindrical, and a large amount of debris formed during the reaming process cannot be discharged smoothly, which affects the reaming process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] Such as Figure 1 to Figure 4 As shown, the reaming device of the present embodiment includes: a drive shaft 1 driven by a motor to rotate, and two groups of grinding mechanisms; two groups of grinding mechanisms include a first grinding mechanism 2 and a second grinding mechanism 3; each group The grinding mechanism includes two grinding blades, and the grinding blades are strip-shaped iron sheets;

[0086] The drive shaft 1 is provided with a shaft key 101; the bottom end of the drive shaft 1 is provided with a fixed plate 102, and the fixed plate 102 is fixedly connected with the drive shaft 1; the fixed plate 102 is disc-shaped, which is perpendicular to and coaxial with the drive shaft 1;

[0087] The first grinding mechanism 2 includes two curved first grinding blades 201 and a first sliding disc 202; the first sliding disc 202 is slidably sleeved on the drive shaft 1; corresponding to the shaft key 101, the first A sliding plate 202 is provided with a keyway 203...

Embodiment 2

[0092] The difference between this embodiment and Embodiment 1 is that the reaming device further includes a third grinding mechanism, the third grinding mechanism includes two curved third grinding blades and a third sliding disk; the third sliding The disk is slidably sleeved on the drive shaft; corresponding to the shaft key, a keyway is provided on the third sliding disk; two third grinding blades are arranged symmetrically at a distance of 180°; one end of each third grinding blade is connected to The fixed plate is fixedly connected, and the other end is fixedly connected with the third sliding plate; the third sliding plate is located above the second sliding plate. The grinding blades of the same group are located on different planes.

Embodiment 3

[0094] Such as Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that the side of the first sliding plate is provided with at least one (for example four) threaded grooves 206 for debris discharge, and the bottom of the threaded grooves 206 is deep , shallow above, and its length is less than one circle. The second sliding plate is provided with four notches 305 for debris to pass through, and the positions of the notches 305 correspond to the grooves 206 on the first sliding plate.

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Abstract

The invention belongs to the field of hole expanding, and provides a hole expanding device which is driven to rotate by a motor in order to drill a pear-shaped hole. The hole expanding device comprises a driving shaft, a first grinding mechanism, a second grinding mechanism, a shaft key and a fixing disc, wherein the fixing disc is fixedly connected with the driving shaft; a first sliding disc is slidably arranged on the driving shaft in a sleeving way; a key groove is formed in the first sliding disc; two first grinding blades are arranged on the same surface; one end of each first grinding blade is fixedly connected with the fixing disc, and the other end of each first grinding blade is fixedly connected with the first sliding disc; the second grinding mechanism comprises a second grinding blade and a second sliding disc; the second sliding disc is slidably arranged on the driving shaft in the sleeving way; a key groove is formed in the second sliding disc; two second grinding blades are arranged on the same surface; one end of each second grinding blade is fixedly connected with the fixing disc, and the other end of each second grinding blade is fixedly connected with the second sliding disc; the second sliding disc is positioned above the first sliding disc. According to the hole expanding device provided by the invention, the structure is simple, and the pear-shaped hole can be drilled.

Description

technical field [0001] The invention relates to a hole reaming device. Background technique [0002] Reaming is the enlargement of the bottom of a borehole or of some types of foundation piers in order to increase the load-carrying area. It is a method used to increase the inner diameter of a perforated workpiece such as a tube, cup, or shell. [0003] Due to structural or aesthetic considerations, pear-shaped holes are sometimes required in actual processing. [0004] Chinese patent application 200910209002.0 discloses a rotary reamer, which consists of a cylinder, a rotating device, a mud scraping device, and a coupling sleeve. The mud scraping device is set at the front end of the rotating device; the coupling sleeve is fixed at the rear end of the rotating device; there is a convex ring on the inner wall of the cylinder, and an internal thread is provided on the convex ring; the rotating device is composed of a rotating device outer casing, a rotating shaft and a conne...

Claims

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Application Information

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IPC IPC(8): E21B7/28E21B10/26H02G1/00A23P1/08
Inventor 王振环陈廷曾飞
Owner CHANGAN UNIV