Portable axis drill

Abstract

The utility model relates to the field of pipeline dredging, in particular to a portable axis drill which comprises a first rotating bearing. The rear end of an outer ring of the first rotating bearing is fixedly connected with a rigid square wire sheath, the rear end of an inner ring of the first rotating bearing is fixedly connected with a steel wire flexible shaft, the steel wire flexible shaft is located on the inner wall of the rigid square wire sheath, the other end of the rigid square wire sheath is fixedly connected with a protective sleeve, and a first groove body is formed in the outer wall of the protective sleeve. According to the pipeline dredging device, the second rigid spring body drives the dredging tool bit to extend into the pipeline, so that the second rigid spring body can be quickly bent in the sinking and bending pipeline due to the softness of the second rigid spring body, and after the second rigid spring body is bent, the second rigid spring body can be effectively pushed to continue to move through the softness of the first rigid spring body; in order to prevent the situation that due to the fact that the softness is consistent, when a dredging tool bit at the front end is clamped in the working process, the remaining part, not entering the pipeline, of the rigid spring body generates insufficient torsion and is wound, and therefore the sinking and bending pipeline is not conveniently and rapidly dredged.

Description

Technical Field

[0001] The utility model relates to the field of pipeline dredging, in particular to a portable center drill. Background Art

[0002] A center drill is usually a device used for household pipeline dredging. It is usually driven by an electric motor, and the blockage in the pipeline is cleared through the rotation and propulsion of a flexible shaft or a spring.

[0003] In the prior art, during the use of the center drill, since the drill bit rotates and dredges, it will cause wear on the inner wall of the pipeline. Especially when dredging a pipeline of the sink bend type, due to the relatively soft wire flexible shaft of the center drill, it is easy to accumulate in the pipeline during the process of applying downward force, resulting in the inability to quickly dredge the sink bend.

[0004] Therefore, a portable center drill is proposed, which has a wire spring sheath structure and a protective structure for the inner part of the pipeline by the outer ring of the drill bit. It can protect the inner wall of the pipeline while dredging the pipeline, and has the ability to quickly dredge the sink bend. Summary of the Utility Model

[0005] In order to overcome the problems that the existing offset drill is prone to cause wear and damage to the inside of the pipeline during the process of dredging the pipeline, and it is not convenient to quickly dredge the sink bend.

[0006] The technical solution of the utility model is: a portable center drill, which includes a first rotating bearing; a rigid square wire sheath is fixedly connected to the rear end of the outer ring of the first rotating bearing, a wire flexible shaft is fixedly connected to the rear end of the inner ring of the first rotating bearing, the wire flexible shaft is located on the inner wall of the rigid square wire sheath, the other end of the rigid square wire sheath is fixedly connected to a protective sleeve, a first groove is opened on the outer wall of the protective sleeve, the rigid square wire sheath is divided into a first rigid spring body and a second rigid spring body. The part of the rigid square wire sheath connected to the rear end of the first rotating bearing is the first rigid spring body, and the part of the rigid square wire sheath connected to the front end of the protective sleeve is the second rigid spring body. The softness of the second rigid spring body is greater than the overall softness of the first rigid spring body, and the softness gradually decreases from the end where the first rigid spring body and the second rigid spring body are connected to the rear end of the first rotating bearing.

[0007] Preferably, when it is necessary to dredge the pipeline, the connecting shaft is connected to the power transmission device, and then the pressure screw is rotated to fix the connecting shaft to the power transmission device. Then, the auxiliary sliding assembly is installed on the first groove body through the screw sleeve. By starting the power transmission device, the steel wire flexible shaft drives the dredging cutter head on the screw sleeve to rotate. When it is necessary to dredge the sink bend, the dredging cutter head and the rigid square wire sheath can quickly dredge the pipeline, solving the problems of easy wear and damage to the inside of the pipeline during the dredging process and inconvenient rapid dredging of the sink bend.

[0008] Preferably, an auxiliary sliding assembly is provided on the first groove body. The front end of the inner ring of the first rotating bearing is fixedly connected with a connecting shaft. The front end of the connecting shaft is provided with a transmission insertion groove, and a threaded groove is penetrated through the outer wall of the connecting shaft. A pressure screw is threadedly installed on the threaded groove.

[0009] Preferably, the other end of the steel wire flexible shaft is fixedly connected with a second transmission bearing. The rear end of the second transmission bearing is fixedly connected with a mounting screw ring. A screw sleeve is threadedly installed on the mounting screw ring. The outer wall of the rear end of the screw sleeve is fixedly connected with evenly distributed dredging cutter heads. The outer ring of the second transmission bearing is fixedly connected with the inner wall of the protective sleeve.

[0010] Preferably, the auxiliary sliding assembly includes a limit sleeve, a U-shaped bracket, a second groove body, a third groove body, a U-shaped block, a limit post, a pulley and a spring. A limit sleeve is movably arranged on the outer wall of the first groove body. The outer wall of the limit sleeve is fixedly connected with three U-shaped brackets evenly distributed in a circular shape. Second groove bodies are penetrated through the left and right outer walls of the U-shaped bracket. Third groove bodies are provided at the left and right inner walls of the U-shaped bracket. The third groove body and the second groove body communicate with each other. A U-shaped block is slidably arranged on the third groove body. Limit posts are fixedly connected to the left and right ends of the U-shaped block. The limit posts are adapted to the second groove body. Pulleys are rotatably arranged at the left and right inner walls of the U-shaped block. A spring is fixedly connected to the lower end of the U-shaped block. The other end of the spring is fixedly connected to the lower end of the inner wall of the U-shaped bracket.

[0011] Preferably, the front end of the limit sleeve is attached to the front end inner wall of the first groove body, and the rear end of the limit sleeve is attached to the front end of the screw sleeve.

[0012] Preferably, the first rigid spring body and the telescopic sleeve are made of spring steel, and the second rigid spring body is made of stainless steel.

[0013] Preferably, a telescopic sleeve is provided on the rigid square wire sheath, and the telescopic sleeve is slidably arranged on the outer wall of the rigid square wire sheath.

[0014] The beneficial effects of the present utility model:

[0015] When it is necessary to dredge a bent pipe, the second steel spring body is used to drive the dredging cutter head into the pipe, so that the second steel spring body can be bent quickly in the bent pipe due to its softness. After the second steel spring body is bent, the softness of the first steel spring body can effectively push the second steel spring body to continue to move. This is to prevent the front end dredging cutter head from getting stuck due to the same softness, and the remaining steel spring body that has not entered the pipe from generating insufficient torque and causing entanglement, which makes it inconvenient to quickly dredge the bent pipe.

[0016] The inner wall of the pipe is limited by sliding through three pulleys, so as to prevent the dredging cutter head from rubbing against the inner wall of the pipe as much as possible, thereby solving the problem of the cutter head easily causing wear and damage to the inside of the pipe during the dredging process. The pulley can also be removed for greater convenience when encountering sharp bends in dredging.

[0017] The rigid square wire sheath and telescopic sheath can be quickly rolled up and retracted when the device is finished working. Then, through the special treatment of the front end of the rigid square wire sheath and its own flexibility, the dredging knife head can be pushed to perform flexible dredging work in the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 What is shown is a three-dimensional structural schematic diagram of a portable axial drill of the utility model;

[0019] Figure 2 The schematic diagram of the cross-section structure of the auxiliary sliding assembly of a portable axial drill according to the utility model is shown;

[0020] Figure 3 The present invention shows a schematic diagram of a three-dimensional disassembly structure of an auxiliary sliding assembly and a dredging cutter head of a portable axial drill;

[0021] Figure 4 What is shown is a three-dimensional structural schematic diagram of a rigid square wire sheath of a portable axial drill according to the utility model.

[0022] The markings in the attached drawings are: 1. first rotating bearing; 101. limiting sleeve; 102. U-shaped bracket; 103. second slot body; 104. third slot body; 105. U-shaped block; 106. limiting column; 107. pulley; 108. spring; 2. telescopic sleeve; 3. connecting shaft; 4. pressure screw; 5. transmission insertion groove; 6. rigid square wire sheath; 601. first rigid spring body; 602. second rigid spring body; 7. steel wire flexible shaft; 8. threaded groove; 9. protective sleeve; 10. first slot body; 11. second transmission bearing; 12. mounting screw ring; 13. screw sleeve; 14. unblocking cutter head. DETAILED DESCRIPTION

[0023] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] Please refer to Figures 1-4 , the present utility model provides an embodiment: a portable center drill, including a first rotating bearing 1; a rigid square wire sheath 6 is fixedly connected to the rear end of the outer ring of the first rotating bearing 1, a steel wire flexible shaft 7 is fixedly connected to the rear end of the inner ring of the first rotating bearing 1, the steel wire flexible shaft 7 is located inside the wall of the rigid square wire sheath 6, the other end of the rigid square wire sheath 6 is fixedly connected to a protective sleeve 9, a first groove 10 is provided on the outer wall of the protective sleeve 9, the rigid square wire sheath 6 is divided into a first rigid spring body 601 and a second rigid spring body 602, the part of the rigid square wire sheath 6 connected to the rear end of the first rotating bearing 1 is the first rigid spring body 601, the part of the rigid square wire sheath 6 connected to the front end of the protective sleeve 9 is the second rigid spring body 602, the softness of the second rigid spring body 602 is greater than the overall softness of the first rigid spring body 601, and the softness from the end where the first rigid spring body 601 and the second rigid spring body 602 are connected to the rear end of the first rotating bearing 1 gradually decreases.

[0025] Please refer to Figure 1 and Figure 4 , in this embodiment, an auxiliary sliding component is provided on the first groove 10, a connecting shaft 3 is fixedly connected to the front end of the inner ring of the first rotating bearing 1, a transmission insertion groove 5 is provided at the front end of the connecting shaft 3, a threaded groove 8 is penetrated through the outer wall of the connecting shaft 3, a pressure screw 4 is threadedly installed on the threaded groove 8, when the output end of the power transmission device is installed into the transmission insertion groove 5, the pressure screw 4 is used to fix the output shaft in the transmission insertion groove 5, the other end of the steel wire flexible shaft 7 is fixedly connected to a second transmission bearing 11, an installation screw ring 12 is fixedly connected to the rear end of the second transmission bearing 11, a screw sleeve 13 is threadedly installed on the installation screw ring 12, a uniformly distributed dredging cutter head 14 is fixedly connected to the outer wall of the rear end of the screw sleeve 13, the outer ring of the second transmission bearing 11 is fixedly connected to the inner wall of the protective sleeve 9. When the second transmission bearing 11 starts to rotate, it will drive the screw sleeve 13 on the installation screw ring 12 to rotate, so that the screw sleeve 13 drives the uniformly distributed dredging cutter heads 14 on the outer wall to perform the work of dredging the pipeline. The first rigid spring body 601 and the telescopic sleeve 2 are made of spring steel, the second rigid spring body 602 is made of stainless steel, the rigid square wire sheath 6 and the telescopic sleeve 2 are made of heavier materials. In the pipeline, by squeezing the rigid square wire sheath 6, it is convenient for the dredging cutter head 14 to be pushed down in the pipeline. A telescopic sleeve 2 is provided on the rigid square wire sheath 6, and the telescopic sleeve 2 is slidably arranged on the outer wall of the rigid square wire sheath 6.

[0026] Please refer to Figures 2-3, in this embodiment, the auxiliary sliding assembly includes a limit sleeve 101, a U-shaped bracket 102, a second groove 103, a third groove 104, a U-shaped block 105, a limit post 106, a pulley 107 and a spring 108; a limit sleeve 101 is movably arranged on the outer wall of the first groove 10, and three U-shaped brackets 102 evenly distributed in a circular shape are fixedly connected to the outer wall of the limit sleeve 101. Second grooves 103 are formed through the outer walls of the left and right ends of the U-shaped bracket 102. Third grooves 104 are formed at the left and right ends of the inner wall of the U-shaped bracket 102. The third groove 104 and the second groove 103 communicate with each other. A U-shaped block 105 is slidably arranged on the third groove 104. Limit posts 106 are fixedly connected to the left and right ends of the U-shaped block 105. The limit posts 106 are adapted to the second groove 103. Pulleys 107 are rotatably arranged at the left and right ends of the inner wall of the U-shaped block 105. A spring 108 is fixedly connected to the lower end of the U-shaped block 105. The other end of the spring 108 is fixedly connected to the lower end of the inner wall of the U-shaped bracket 102. The front end of the limit sleeve 101 fits with the front end of the inner wall of the first groove 10, and the rear end of the limit sleeve 101 fits with the front end of the screw sleeve 13. By rotating the screw sleeve 13 to remove it from the installation screw ring 12, then the limit sleeve 101 is not clamped by the screw sleeve 13 and the protective sleeve 9, and the limit sleeve 101 can be easily removed from the protective sleeve 9 for maintenance work.

[0027] When the pipeline needs to be dredged, by connecting the connecting shaft 3 with the power transmission device, then rotating the pressure screw 4 to fix the connecting shaft 3 with the power transmission device, by rotating the screw sleeve 13 to remove it from the installation screw ring 12, then placing the limit sleeve 101 on the outer wall of the first groove 10, and then rotating the screw sleeve 13 to install the limit sleeve 101;

[0028] During the dredging work, by starting the power transmission device, driving the steel wire soft shaft 7 and then driving the dredging cutter head 14 on the screw sleeve 13 to rotate. Then, the rigid square wire sheath 6 is placed into the pipeline, and the inner wall of the pipeline is slidably limited by the three pulleys 107, so as to prevent the dredging cutter head 14 from rubbing against the inner wall of the pipeline. When encountering a sunken bend pipeline, when the dredging cutter head 14 rotates, by driving the dredging cutter head 14 to extend into the pipeline through the second rigid spring body 602, the softness of the second rigid spring body 602 itself can quickly bend in the sunken bend pipeline. When the second rigid spring body 602 bends, the softness of the first rigid spring body 601 can effectively push the second rigid spring body 602 to continue moving. To prevent the situation that due to the same softness of 601 and 60, when the front dredging cutter head gets stuck during work, the remaining rigid spring body of the part of 602 that has not entered the pipeline generates insufficient torque and gets entangled, thus making it inconvenient to quickly dredge the sunken bend pipeline;

[0029] When maintenance of the auxiliary sliding component is required, the screw sleeve 13 is rotated to be removed from the mounting screw ring 12. Then, the limiting sleeve 101 is not clamped by the screw sleeve 13 and the protective sleeve 9, and the limiting sleeve 101 can be easily removed from the protective sleeve 9 for maintenance work.

[0030] Through the above steps, when pipe dredging work is required, the connecting shaft 3 is connected to the power transmission device. Then, the pressure screw 4 is rotated to fix the connecting shaft 3 to the power transmission device. Then, the auxiliary sliding component is installed on the first groove body 10 through the screw sleeve 13. By starting the power transmission device, the wire soft shaft 7 drives the dredging cutter head 14 on the screw sleeve 13 to rotate. When dredging work on the sink bend is required, the dredging cutter head 14 and the rigid square wire sheath 6 can perform rapid dredging work inside the pipe, solving the problems of easy wear and damage to the inside of the pipe during the process of dredging the pipe and the inconvenience of quickly dredging the sink bend.

[0031] The above has described in detail the embodiments of the present invention in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by those skilled in the art.

Claims

1. A portable spindle drill, comprising a first rotating bearing (1); characterized in that: A rigid square wire sheath (6) is fixedly connected to the rear end of the outer ring of the first rotating bearing (1), a steel wire flexible shaft (7) is fixedly connected to the rear end of the inner ring of the first rotating bearing (1), the steel wire flexible shaft (7) is located on the inner wall of the rigid square wire sheath (6), a protective sheath (9) is fixedly connected to the other end of the rigid square wire sheath (6), a first groove (10) is provided on the outer wall of the protective sheath (9), a portion of the rigid square wire sheath (6) connected to the rear end of the first rotating bearing (1) is a first rigid spring body (601), a portion of the rigid square wire sheath (6) connected to the front end of the protective sheath (9) is a second rigid spring body (602), the softness of the second rigid spring body (602) is greater than the softness of the first rigid spring body (601) as a whole, and the softness gradually decreases from one end where the first rigid spring body (601) and the second rigid spring body (602) are connected to each other to the rear end of the first rotating bearing (1).

2. A portable core drill according to claim 1, characterized in that: A connecting shaft (3) is fixedly connected to the front end of the inner ring of the first rotating bearing (1), a transmission insertion groove (5) is provided at the front end of the connecting shaft (3), a thread groove (8) is penetrated through the outer wall of the connecting shaft (3), a pressure screw (4) is threadedly mounted on the thread groove (8), and an auxiliary sliding component is provided on the first groove body (10).

3. A portable core drill according to claim 1, characterized in that: The other end of the steel wire flexible shaft (7) is fixedly connected to a second transmission bearing (11), a mounting screw ring (12) is fixedly connected to the rear end of the second transmission bearing (11), a screw sleeve (13) is threadedly mounted on the mounting screw ring (12), and evenly distributed dredging cutter heads (14) are fixedly connected to the outer wall of the rear end of the screw sleeve (13), and the outer ring of the second transmission bearing (11) is fixedly connected to the inner wall of the protective sleeve (9).

4. A portable core drill according to claim 1, characterized in that: The auxiliary sliding assembly comprises a limiting sleeve (101), a U-shaped bracket (102), a second trough body (103), a third trough body (104), a U-shaped block (105), a limiting column (106), a pulley (107) and a spring (108); the limiting sleeve (101) is movably arranged on the outer wall of the first trough body (10); three U-shaped brackets (102) evenly distributed in a circular shape are fixedly connected to the outer wall of the limiting sleeve (101); the second trough body (103) is penetrated through the outer walls of the left and right ends of the U-shaped bracket (102); the inner walls of the left and right ends of the U-shaped bracket (102) are A third trough (104) is provided at the end, the third trough (104) and the second trough (103) are interconnected, a U-shaped block (105) is slidably arranged on the third trough (104), the left and right ends of the U-shaped block (105) are fixedly connected to limiting columns (106), the limiting columns (106) are adapted to the second trough (103), pulleys (107) are rotatably arranged at the left and right ends of the inner wall of the U-shaped block (105), a spring (108) is fixedly connected to the lower end of the U-shaped block (105), and the other end of the spring (108) is fixedly connected to the lower end of the inner wall of the U-shaped bracket (102).

5. A portable core drill according to claim 4, characterized in that: The front end of the limiting sleeve (101) is in contact with the front end of the inner wall of the first groove body (10), and the rear end of the limiting sleeve (101) is in contact with the front end of the screw sleeve (13).

6. The portable core drill according to claim 1, characterized in that: The first rigid spring body (601) and the telescopic sleeve (2) are made of spring steel, and the second rigid spring body (602) is made of stainless steel.

7. The portable core drill according to claim 1, characterized in that: A telescopic sleeve (2) is arranged on the rigid square wire sheath (6), and the telescopic sleeve (2) is slidably arranged on the outer wall of the rigid square wire sheath (6).

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