Pressing locking flexible shaft type dredging machine

Abstract

The utility model discloses a pressing locking flexible shaft type dredger, which is characterized in that a lower bearing seat is arranged in the lower part of an inner cavity of a handle shell, two lower bearings arranged on the lower bearing seat support a flexible shaft from the lower part, a rotating arm is arranged at the upper end of the handle shell, one end of the rotating arm is rotatably connected with a rotating shaft in the inner cavity of the handle shell, and the other end of the rotating arm is connected with a rotating shaft in the inner cavity of the handle shell. A movable lock shaft push plate is arranged in the middle of the rotating arm, the lower end of the lock shaft push plate is connected with one end of a lock frame, a lock shaft is arranged in a vertical groove formed in the other end of the lock frame, the two ends of the lock shaft are located in horizontal grooves of an inner cavity of the handle shell respectively, and a lock catch is arranged at the lower end of the rotating arm. A locking spring is arranged between the lock catch and the lock frame; an upper bearing is arranged on an upper bearing seat arranged at the lower end of the rotating arm, the rotating arm is rotated to push the lock shaft push plate, the lock catch can be clamped with or loosened from the lock shaft, and then the upper bearing can clamp or loosen the flexible shaft.

Description

Technical Field

[0001] The utility model relates to a pipeline dredging machine, in particular to a press-locking flexible shaft type dredging machine. Background Art

[0002] Sewer pipes are indispensable in our daily life. For example, sewer pipes in toilets are very troublesome to clean when foreign objects fall into them, especially sewer pipes with water traps, which are difficult to clean. Sewer pipes are not cleaned for a long time, and dirt and urine alkali are collected in the water trap, which can easily cause blockage of the sewer pipe.

[0003] A dredging machine is a tool used to clear and unclog blocked pipes. Its structure mainly includes a flexible shaft driven by a power mechanism. When in use, the power mechanism can drive the flexible shaft to rotate and extend at the same time, so that the flexible shaft can penetrate into the pipe to be dredged to clear the blockage. In the decades since the birth of the dredging machine, directly inserting the flexible shaft of the dredging machine into the pipe to be dredged has become a common thinking in the industry and has been used to this day.

[0004] However, the existing drain cleaners on the market currently require additional trigger force to be applied when holding the front end, or the threaded lock shaft structure is large in size and inconvenient to operate, which hinders the better promotion and application of the drain cleaners. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a push-locking flexible shaft dredging machine with reasonable design, convenient operation, safety and reliability.

[0006] The technical solution of the utility model is:

[0007] A push-lock flexible shaft dredging machine, comprising a wheel hub 5 and a wheel hub cover 6, wherein a transmission mechanism capable of rotating and retracting a flexible shaft 1 is arranged in the wheel hub 5, a handle housing is arranged at the front end of the wheel hub 5, a lower bearing seat 12 is arranged in the lower part of the inner cavity of the handle housing, two lower bearings 13 are arranged on the lower bearing seat 12, and the two lower bearings 13 support the flexible shaft 1 from below, and a strip through groove along the axial direction is arranged at the upper end of the handle housing, a rotating arm 4 is arranged in the strip through groove, one end of the rotating arm 4 is rotatably connected to a rotating shaft 9 arranged in the inner cavity of the handle housing through an axial hole 25, and a reset spring 16 and a limit plate 24 are arranged between the other end of the rotating arm 4 and the handle housing;

[0008] A strip hole is provided in the middle of the rotating arm 4, and a guide block at the lower part of the lock shaft push plate 3 is located in the strip hole and the two are slidably matched. The lower end of the guide block is connected to one end of the lock frame 19, and the other end of the lock frame 19 is provided with a vertical groove 22, and a lock shaft 11 is provided in the vertical groove 22, and the two are clearance-matched. The two ends of the lock shaft 11 are respectively located in the horizontal grooves 10 provided in the inner cavity of the handle housing, and the two are slidably matched. A lock buckle 17 is provided at the lower end of the rotating arm 4, and a locking spring 18 is provided between the lock buckle 17 and the lock frame 19, and the lock buckle 17 can be clamped or released with the lock shaft 11;

[0009] An upper bearing 20 seat is disposed at the lower end of the rotating arm 4 , and an upper bearing 20 is disposed on the upper bearing 20 seat. The rotating arm 4 can rotate so that the upper bearing 20 can clamp or release the flexible shaft 1 .

[0010] Furthermore, the handle housing is a two-half structure, formed by a handle front shell 2 and a handle rear shell 8 that are snap-fitted together, and connecting screws are provided between the handle front shell 2 and the handle rear shell 8.

[0011] Furthermore: a mounting plate is provided on one end face of the lock buckle 17, and the mounting plate is connected to the lower end of the rotating arm 4 through a connecting bolt; a positioning column is provided on the other end face of the lock buckle 17, and the positioning column is inserted into the inner hole of one end of the locking spring 18; a hook is provided on the lower end of the lock buckle 17, and the lower end face of the hook is an inclined surface.

[0012] Furthermore, a through slot is provided in the middle of the hook at the lower end of the lock buckle 17, and the lock frame 19 is located in the through slot and the two are clearance-matched.

[0013] Furthermore, the lock frame 19 is provided with a positioning column, which matches the positioning hole provided on the guide block of the lock shaft push plate 3, and the lock frame 19 is connected to the guide block through a connecting bolt.

[0014] Furthermore, a hollow shaft 28 is disposed at the front end of the wheel hub 5, a support partition 29 is disposed in the handle housing, and the support partition 29 is fastened by connecting bolts and fixing pads 14, so that the rear end of the handle housing is in close contact with the wheel hub 5. A shaft sleeve 15 is mounted on the hollow shaft 28.

[0015] Furthermore, a fixing ring groove is arranged on the inner ring surface of the front end of the handle housing, a guide ring 23 is arranged in the fixing ring groove, and the front end of the flexible shaft 1 passes through the guide ring 23 .

[0016] Furthermore, the handle housing is provided with housing marking lines 26, and the lock shaft push plate 3 is provided with a push plate marking line 27, which can indicate the locked or unlocked position.

[0017] The beneficial effects of the utility model are:

[0018] 1. The utility model can push the upper bearing assembly downward by pressing the rotating arm, so that the upper bearing can press the flexible shaft to lock the shaft. Conversely, the flexible shaft can be loosened to better dredge the pipeline.

[0019] 2. When the utility model is unlocked, it is necessary to press the rotating arm again and push the lock shaft push plate to move before unlocking, which prevents accidental unlocking due to misoperation of pressing the rotating arm, and has good safety.

[0020] 3. The rotating arm of the utility model is provided with a return spring to keep the rotating arm in an open state. In addition, a limit plate is provided on the rotating arm to prevent the rotating arm from being excessively opened or even turned over.

[0021] 4. The utility model adopts a movable connection between the bearing and the bearing seat, which can be disassembled and replaced. In addition, the cross-arrangement of the bearings can support and clamp the flexible shaft from different angles, and has good stability.

[0022] 5. The utility model can be completed with one-hand operation, which improves work efficiency. After the locking is completed, no force needs to be applied to maintain the locking. The problem that the existing push-type lock shaft of the dredging machine is prone to fatigue due to long-time pressing of the lock shaft device is solved. The utility model is easy to promote and implement, and has good economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a push-lock flexible shaft dredging machine;

[0024] Figure 2 for Figure 1 A top view of a push-lock flexible shaft dredging machine is shown;

[0025] Figure 3 for Figure 1 A rear view of a push-lock flexible shaft dredging machine is shown;

[0026] Figure 4 for Figure 3 A partial cross-sectional view of a push-lock flexible shaft dredging machine is shown;

[0027] Figure 5 for Figure 4 A schematic diagram of the structure of a push-lock flexible shaft dredging machine when unlocked;

[0028] Figure 6 for Figure 5 A partial enlarged view of a push-lock flexible shaft dredging machine;

[0029] Figure 7 for Figure 5 Axonometric view of the middle pivot arm;

[0030] Figure 8 for Figure 7 Structural diagram of the middle locking frame;

[0031] Fig. 9 for Figure 8 A schematic diagram of the structure of the lock;

[0032] Fig.10 for Figure 1 A partial exploded view of a push-lock flexible shaft type dredging machine is shown. DETAILED DESCRIPTION

[0033] Example 1: See Figure 1 -- Fig.10 , In the figure, 1-flexible shaft, 2-handle front shell, 3-lock shaft push plate, 4-rotating arm, 5-wheel hub, 6-wheel hub cover, 7-rotating handle, 8-handle rear shell, 9-rotating shaft, 10-horizontal groove, 11-lock shaft, 12-lower bearing seat, 13-lower bearing, 14-fixing pad, 15-sleeve, 16-reset spring, 17-lock buckle, 18-locking spring, 19-lock frame, 20-upper bearing, 21-upper bearing seat, 22-vertical groove, 23-guide ring, 24-limiting plate, 25-shaft hole, 26-shell marking line, 27-push plate marking line, 28-hollow shaft, 29-support partition.

[0034] A push-lock flexible shaft dredging machine, comprising a wheel hub 5 and a wheel hub cover 6, wherein a transmission mechanism capable of rotating and retracting a flexible shaft 1 is arranged in the wheel hub 5 (this is a prior art, the specific structure is not described in detail, and a rotating handle 7 can be used as a power source, or an electric device can be used as a power source), wherein: a handle housing is arranged at the front end of the wheel hub 5, a lower bearing seat 12 is arranged in the lower part of the inner cavity of the handle housing, two lower bearings 13 are arranged on the lower bearing seat 12, and the two lower bearings 13 support the flexible shaft 1 from below, a strip through groove along the axial direction is arranged at the upper end of the handle housing, a rotating arm 4 is arranged in the strip through groove, one end of the rotating arm 4 is rotatably connected to a rotating shaft 9 arranged in the inner cavity of the handle housing through an axial hole 25, and a reset spring 16 and a limit plate 24 are arranged between the other end of the rotating arm 4 and the handle housing;

[0035] A strip hole (the strip hole is rectangular) is provided in the middle of the rotating arm 4, the guide block at the lower part of the lock shaft push plate 3 is located in the strip hole and the two are slidably matched and can move forward and backward, the lower end of the guide block is connected to one end of the lock frame 19, and the other end of the lock frame 19 is provided with a vertical groove 22, the vertical groove 22 is provided with a lock shaft 11 and the two are clearance-matched, the width of the vertical groove 22 is greater than the diameter of the lock shaft 11, the lock shaft 11 can move in the vertical groove 22, the two ends of the lock shaft 11 are respectively located in the horizontal groove 10 provided in the inner cavity of the handle housing and the two are slidably matched, the lock shaft 11 can move in the horizontal groove 10, and the lower end of the rotating arm 4 is provided with a lock buckle 17, and a locking spring 18 is provided between the lock buckle 17 and the lock frame 19, and the lock buckle 17 can be clamped or released with the lock shaft 11;

[0036] An upper bearing 20 seat is provided at the lower end of the rotating arm 4, and an upper bearing 20 is provided on the upper bearing 20 seat (the upper bearing 20 is one, and at this time, one upper bearing 20 and two lower bearings 13 constitute three-point support and clamping). The rotating arm 4 rotates to enable the upper bearing 20 to clamp or loosen the flexible shaft 1.

[0037] Preferred solution: The handle shell is a two-half structure, consisting of a handle front shell 2 and a handle rear shell 8 that are snap-fitted together, and connecting screws are provided between the handle front shell 2 and the handle rear shell 8. This structure facilitates the installation of internal components.

[0038] Preferred solution: A mounting plate is provided on one end face of the lock catch 17, and the mounting plate is connected to the lower end of the rotating arm 4 through a connecting bolt. A positioning column is provided on the other end face of the lock catch 17, and the positioning column is inserted into the inner hole of one end of the locking spring 18. A hook is provided on the lower end of the lock catch 17, and the lower end face of the hook is an inclined surface. A through groove is provided in the middle of the hook at the lower end of the lock catch 17, and the lock frame 19 is located in the through groove and the two are clearance-matched and can move.

[0039] Preferred solution: the lock frame 19 is provided with a positioning column, which matches the positioning hole provided on the guide block of the lock shaft push plate 3, and the lock frame 19 is connected to the guide block by a connecting bolt.

[0040] Preferred solution: a hollow shaft 28 is provided at the front end of the wheel hub 5, a support partition 29 is provided in the handle housing, and the support partition 29 is fastened by connecting bolts and fixing pads 14 so that the rear end of the handle housing is in close contact with the wheel hub 5; if necessary, a sleeve 15 is mounted on the hollow shaft 28 to adapt to long-distance fixing of the support partition 29.

[0041] Optimal solution: A fixed ring groove is arranged on the inner ring surface of the front end of the handle housing, a guide ring 23 is arranged in the fixed ring groove, and the front end of the flexible shaft 1 passes through the guide ring 23 .

[0042] Preferred solution: The handle housing is provided with housing marking lines 26, and the lock shaft push plate 3 is provided with a push plate marking line 27, which can indicate the locked or unlocked position.

[0043] When locking is required, the movable end of the rotating arm 4 is pressed to rotate the rotating arm 4, so that the lock buckle 17 fixed at the lower end of the rotating arm 4 moves downward, and the inclined surface at the lower end of the lock buckle 17 gradually contacts the lock shaft 11 and presses the lock shaft 11 to move. The lock shaft 11 moves the lock frame 19 through the vertical groove 22, and then the lock shaft push plate 3 moves. At this time, the locking spring 18 between the lock frame 19 and the lock shaft 11 is in a compressed state. When the lock shaft 11 passes over the inclined surface, due to the action of the locking spring 18, the lock frame 19 moves in the opposite direction, so that the lock shaft 11 enters the hook of the lock buckle 17, forming a locked state. At this time, the upper bearing 20 and the lower bearing 13 jointly clamp the flexible shaft 1.

[0044] When unlocking is required, the lock shaft push plate 3 is pushed by hand to drive the lock frame 19 to move, so that the lock shaft 11 is disengaged from the hook, and then the rotating arm 4 is rotated, the upper bearing 20 is disengaged from the flexible shaft 1, and the flexible shaft 1 is no longer clamped. Under the action of the reset spring 16, the rotating arm 4 is in an open state. In addition, under the action of the limit plate 24, the rotating arm 4 is prevented from being excessively opened.

[0045] Embodiment 2: This embodiment is basically the same as Embodiment 1, and the similarities are not repeated. The difference is that: there are two upper bearings 20, and the two upper bearings 20 and the two lower bearings 13 form a four-point support and clamping.

[0046] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any simple modification made according to the technical essence of the utility model still falls within the scope of the technical solution of the utility model.

Claims

1. A push-lock flexible shaft type dredging machine, comprising a hub (5) and a hub cover (6), wherein a transmission mechanism capable of rotating and retracting the flexible shaft (1) is arranged in the hub (5), wherein: A handle housing is provided at the front end of the wheel hub (5), a lower bearing seat (12) is provided in the lower part of the inner cavity of the handle housing, two lower bearings (13) are provided on the lower bearing seat (12), and the two lower bearings (13) support the flexible shaft (1) from below, and a strip-shaped through groove is provided along the axial direction at the upper end of the handle housing, and a rotating arm (4) is provided in the strip-shaped through groove, and one end of the rotating arm (4) is rotatably connected to a rotating shaft (9) provided in the inner cavity of the handle housing through an axial hole (25), and a return spring (16) and a limit plate (24) are provided between the other end of the rotating arm (4) and the handle housing; A strip hole is provided in the middle of the rotating arm (4), a guide block at the lower part of the lock shaft push plate (3) is located in the strip hole and the two are slidably matched, the lower end of the guide block is connected to one end of the lock frame (19), the other end of the lock frame (19) is provided with a vertical groove (22), the lock shaft (11) is provided in the vertical groove (22), and the two are clearance-matched, the two ends of the lock shaft (11) are respectively located in the horizontal groove (10) provided in the inner cavity of the handle housing, and the two are slidably matched, the lower end of the rotating arm (4) is provided with a lock buckle (17), a locking spring (18) is provided between the lock buckle (17) and the lock frame (19), and the lock buckle (17) can be clamped or released with the lock shaft (11); An upper bearing (20) seat is provided at the lower end of the rotating arm (4), and an upper bearing (20) is provided on the upper bearing (20) seat. The rotating arm (4) rotates so that the upper bearing (20) can clamp or release the flexible shaft (1).

2. A push-lock flexible shaft dredging machine according to claim 1, characterized in that: The handle housing is a two-half structure, consisting of a handle front housing (2) and a handle rear housing (8) that are fastened together, and a connecting screw is provided between the handle front housing (2) and the handle rear housing (8).

3. The push-lock flexible shaft dredging machine according to claim 1, characterized in that: A mounting plate is provided on one end surface of the lock buckle (17), and the mounting plate is connected to the lower end of the rotating arm (4) via a connecting bolt. A positioning column is provided on the other end surface of the lock buckle (17), and the positioning column is inserted into an inner hole at one end of the locking spring (18). A hook is provided at the lower end of the lock buckle (17), and the lower end surface of the hook is an inclined surface.

4. The push-lock flexible shaft dredging machine according to claim 1, characterized in that: A through slot is provided in the middle of the hook at the lower end of the lock buckle (17), and the lock frame (19) is located in the through slot and the two are clearance-matched.

5. The push-lock flexible shaft dredging machine according to claim 1, characterized in that: The lock frame (19) is provided with a positioning column, which matches a positioning hole provided on a guide block of the lock shaft push plate (3), and the lock frame (19) is connected to the guide block via a connecting bolt.

6. The push-lock flexible shaft dredging machine according to claim 1, characterized in that: A hollow shaft (28) is provided at the front end of the wheel hub (5), a support baffle (29) is provided in the handle housing, and the support baffle (29) is fastened by connecting bolts and fixing pads (14) so ​​that the rear end of the handle housing is in close contact with the wheel hub (5).

7. The push-lock flexible shaft dredging machine according to claim 6, characterized in that: The hollow shaft (28) is sleeved with a shaft sleeve (15).

8. The push-lock flexible shaft dredging machine according to claim 1, characterized in that: A fixed annular groove is provided on the inner annular surface at the front end of the handle housing, a guide ring (23) is provided in the fixed annular groove, and the front end of the flexible shaft (1) passes through the guide ring (23).

9. The push-lock flexible shaft dredging machine according to claim 1, characterized in that: The handle housing is respectively provided with a housing marking line (26), and the lock shaft push plate (3) is provided with a push plate marking line (27), which can indicate the locked or unlocked position.

Images