Flexible shaft control mechanism and dredging machine

Abstract

The utility model discloses a flexible shaft control mechanism and a dredging machine which are simple and convenient to operate, labor-saving and high in operation comfort, the flexible shaft control mechanism comprises a fixed bearing assembly and a movable bearing assembly which are respectively arranged on two sides of a flexible shaft, and a fixed bearing and a movable bearing which are arranged at the front ends of the fixed bearing assembly and the movable bearing assembly jointly clamp the flexible shaft; the movable bearing assembly is hinged to be of a rotatable structure, a compression spring is arranged at the top of the front end of the movable bearing assembly, and the compression spring keeps the clamping state of the movable bearing and the fixed bearing. A pressing assembly for pressing the rear end of the movable bearing assembly downwards is arranged above the movable bearing assembly, when the pressing assembly is pressed downwards, the front end of the movable bearing assembly tilts up, and the clamping state of the flexible shaft is relieved.

Description

Technical Field

[0001] The utility model relates to a pipeline dredging machine, in particular to a flexible shaft control mechanism and a dredging machine. Background Art

[0002] At present, a handheld dredging machine is generally used for unclogging pipelines. The handheld dredging machine includes a wheel hub, a flexible shaft coiled in the wheel hub, and a guide cylinder rotatably arranged at the front end of the wheel hub. The wheel hub is driven to rotate by an electric trigger arranged at the rear thereof, and the flexible shaft extends from the guide cylinder. A flexible shaft control mechanism for controlling the extension and retraction of the flexible shaft is arranged in the guide cylinder, and a switch for starting the flexible shaft control mechanism is arranged outside the guide cylinder. For example, CN203008068U discloses a handheld pipe cleaning machine, including a drum, a hand-held handle, an automatic feeding drive device, a clamping device, a driving shaft and a flexible shaft. The drum is a funnel-shaped structure with a cover and has a certain storage space inside. The automatic feeding drive device includes three cross wheels evenly distributed in the radial direction. When working, the cross wheels are clamped by the clamping device, so that the three evenly distributed cross wheels simultaneously clamp the flexible shaft. The drum and the driving shaft are rotated by a hand crank or a hand drill to drive the flexible shaft to rotate, and the flexible shaft is pushed to automatically move forward or backward along the spiral angle formed by the three evenly distributed cross wheels. When the cross wheels are released, the flexible shaft stops moving forward or backward. When operating, the operator needs to control the clamping device while holding the front hand handle with one hand, and operate the hand crank or driving mechanism at the rear end with the other hand. During the whole process, the operator needs to keep pressing the clamping device with the hand holding the hand handle. Therefore, the operator is particularly prone to fatigue and hand soreness, which affects the comfort of operation. Summary of the invention

[0003] The utility model aims to provide a flexible shaft control mechanism and a dredging machine which are easy to operate, labor-saving and highly comfortable to operate.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] Technical Solution 1: A flexible shaft control mechanism, comprising a fixed bearing assembly and a movable bearing assembly respectively arranged on both sides of the flexible shaft, the fixed bearing assembly and the fixed bearing and the movable bearing at the front end of the movable bearing assembly jointly clamp the flexible shaft; the movable bearing assembly is hinged to be a rotatable structure, a compression spring is provided at the top of the front end of the movable bearing assembly, and the compression spring maintains the clamping state of the movable bearing and the fixed bearing; a pressing assembly is provided above the movable bearing assembly to press down the rear end of the movable bearing assembly, and when the pressing assembly is pressed down, the front end of the movable bearing assembly is lifted up to release the clamping state of the flexible shaft.

[0006] Preferably, support seats are extended upward on both sides of the middle part of the fixed bearing assembly, the flexible shaft passes through between the two support seats, and the middle part of the movable bearing assembly is hinged between the two support seats.

[0007] Preferably, the movable bearing assembly is divided into a front section and a rear section at a hinge portion of the movable bearing assembly, the length of the rear section is greater than the length of the front section, and the pressing assembly is located at the tail end of the rear section.

[0008] Preferably, the pressing assembly includes a pressing rod, a pressing block and a button; one end of the pressing rod is hinged above the movable bearing assembly, the button is arranged at the other end of the pressing rod, and the pressing block is arranged below the pressing rod and abuts against the rear end of the movable bearing assembly.

[0009] Technical Solution 2: A cleaning machine includes a shell, a hub, a motor for controlling the rotation of the hub, a start button for controlling the motor, and the above-mentioned flexible shaft control mechanism.

[0010] Technical Solution 3: A drain cleaner comprises a shell, a hub, a motor for controlling the rotation of the hub, a start button for controlling the motor and the above-mentioned flexible shaft control mechanism; the tail end of the pressure rod extends toward the start button of the motor, and the button is arranged next to the start button.

[0011] Compared with the prior art, the utility model has the following beneficial effects: first, a compression spring is arranged at the top of the front end of the movable bearing assembly. Under the action of the compression spring, the movable bearing and the fixed bearing are always kept in a state of clamping the flexible shaft. In this way, no external force is required during the entire extension or retraction of the flexible shaft, and the operation is comfortable and labor-saving; second, the movable bearing assembly is hinged and rotatable, and the front end is kept in a normal pressure clamping state by the compression spring, and a pressing assembly is arranged at the rear end. When it is necessary to control the flexible shaft to stop extending and control the flexible shaft to rotate to hook the blockage, the pressing assembly is pressed down to make the front end of the movable bearing assembly tilt up and release the clamping of the flexible shaft. In this way, during the dredging operation, the extension and retraction of the flexible shaft does not require additional force. The clamping force can be released by pressing the pressing assembly only when the flexible shaft needs to rotate to hook the blockage. After hooking, the pressure on the pressing assembly is released, the flexible shaft resumes the clamping state, and the flexible shaft slowly retracts to pull out the blockage. The operation is very flexible and simple.

[0012] Further beneficial effects: First, support seats are extended on both sides of the middle part of the fixed bearing assembly, and the middle part of the movable bearing assembly is hinged between the two support seats. While the clamping force of the fixed bearing and the movable bearing on the flexible shaft is more stable, the overall structure is also more compact; second, the movable bearing assembly is divided into a front section and a rear section at the hinge of the movable bearing assembly. The length of the rear section is greater than that of the front section, and the pressing assembly is located at the tail end of the rear section, so that the pressing assembly located at the tail end of the rear section is more labor-saving and comfortable to operate; third, the pressing assembly is configured as a hinged lever structure at one end, and a button is provided at the tail end, and the lower pressing block contacts the rear end of the movable bearing assembly, so that pressing the button is more labor-saving and comfortable; fourth, the tail end of the pressure rod of the pressing assembly extends to the start button of the motor, and the button is provided next to the start button, so that the hand operating the start button can simultaneously operate the button of the pressing assembly, which is more comfortable and labor-saving to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 yes Figure 1 The enlarged view of point A in the middle;

[0015] Among them, 1. wheel hub; 2. flexible shaft; 3. motor; 4. dredging head; 5. fixed bearing assembly; 6. movable bearing assembly; 7. compression spring; 8. pressing assembly; 9. start button; 10. button; 50. fixed bearing seat; 51. fixed bearing; 52. support seat; 60. movable bearing rod; 61. movable bearing; 80. pressure block; 81. pressure rod. DETAILED DESCRIPTION

[0016] In order to make the technical solution of the utility model clearer, the following Figure 1-2 It should be understood that the specific implementation methods described in this specification are only for explaining the utility model, and are not intended to limit the protection scope of the utility model.

[0017] A cleaning machine includes a shell, a wheel hub 1, a flexible shaft 2, a flexible shaft control mechanism, a motor 3, etc.; the shell, wheel hub 1, flexible shaft 2 and motor 3 are all prior arts. In order to more clearly illustrate the utility model, the shell is not shown in the accompanying drawings. The flexible shaft 2 is coiled in the wheel hub 1, and the motor 3 is arranged at the rear end of the wheel hub 1 and connected to the rotating shaft at the rear end of the wheel hub 1. The rotating shaft is controlled by the motor 3 to drive the wheel hub 1 to rotate. The front end of the flexible shaft 2 is a cleaning head 4, which extends from the front end of the shell; the flexible shaft control mechanism is arranged in front of the wheel hub 1, and the flexible shaft 2 passes through the flexible shaft control mechanism.

[0018] The flexible shaft control mechanism includes a fixed bearing assembly 5, a movable bearing assembly 6, a compression spring 7 and a pressing assembly 8; the fixed bearing assembly 5 includes a fixed bearing seat 50 and a fixed bearing 51 arranged at the front end of the fixed bearing seat 50, a through groove for the flexible shaft 2 to pass through is provided in the middle of the fixed bearing seat 50, and there are two fixed bearings 51 and they are respectively arranged on both sides of the through groove; the movable bearing assembly 6 is arranged above the fixed bearing assembly 5, and the movable bearing assembly 6 includes a movable bearing rod 60 and a movable bearing 61 arranged at the front end of the movable bearing rod 60; the movable bearing 61 is located between the two fixed bearings 51, and forms a triangular structure for clamping the flexible shaft 2 with the two fixed bearings 51, and the clamping force is higher; the movable bearing rod 60 is arranged in parallel above the flexible shaft 2, and support seats 52 extend upward on both sides of the fixed bearing seat 50, and the movable bearing rod 60 is located between the two support seats 52 and is connected to the two support seats 52 is hinged and has a rotatable structure, and the hinge also divides the movable bearing rod 60 into a front section and a rear section; the front section of the movable bearing rod 60 is provided with a compression spring 7 near the movable bearing 61, and the upper and lower parts of the compression spring 7 are respectively limited between the shell and the movable bearing rod 60, and the movable bearing 61 and the fixed bearing 51 are kept in a normal pressure clamping state through the elastic force of the compression spring 7; the pressing component 8 is arranged at the rear section of the movable bearing rod 60. Since the movable bearing rod 60 is a hinged structure, when the pressing component 8 is pressed down, the rear end of the movable bearing rod 60 falls down and the front end rises, driving the movable bearing 61 to leave the flexible shaft 2, thereby releasing the clamping state of the flexible shaft 2; the length of the rear section of the movable bearing rod 60 is greater than that of the front section, and the pressing component 8 is located at the tail end of the rear section, that is, the distance between the hinge and the rear end surface on the movable bearing rod 60 is greater than the distance between the hinge and the front end surface.

[0019] The pressing assembly 8 includes a pressing rod 81, a pressing block 80 and a button 10; one end of the pressing rod 81 is hinged above the movable bearing assembly 6, and the end of the pressing rod 81 can be hinged to the inside of the shell, or can be hinged to the extended end of the support seat 52 on the fixed bearing seat 50; the button 10 is arranged at the other end of the pressing rod 81, and the pressing block 80 is arranged below the pressing rod 81 and contacts the rear end of the movable bearing assembly 6, that is, contacts the rear end of the movable bearing rod 60, and the pressing block 80 is located near the rear end surface so that The operation of the pressing assembly 8 is more labor-saving and comfortable; when the button 10 is pressed, the pressing rod 81 rotates to drive the pressing block 80 to press down the tail end of the movable bearing rod 60, so that the front section of the movable bearing rod 60 is tilted, and the movable bearing 61 leaves the flexible shaft 2, thereby releasing the clamping of the flexible shaft 2; the tail end of the pressing rod 81 extends toward the start button 9 of the motor 3, and the button 10 is arranged next to the start button 9, so that the hand operating the start button 9 can simultaneously operate the button 10 of the pressing assembly 8, which is more comfortable to operate and more labor-saving.

[0020] When using the unclogging machine to dredge the pipeline, first start the motor 3. Since the flexible shaft 2 is normally in a clamped state, the flexible shaft 2 can be extended without other operations. After the flexible shaft 2 is extended into the pipeline, when the unclogging head encounters a blockage, press the button 10 at the tail end of the pressure rod 81 to release the clamping of the flexible shaft 2. The flexible shaft 2 rotates synchronously with the wheel hub 1 to hook the blockage. Finally, release the button 10 at the tail end of the pressure rod 81, and the flexible shaft 2 is clamped again. Under the rotation of the wheel hub 1, the flexible shaft 2 drives the blockage to retract together. The operation is very simple, labor-saving, and comfortable. The rotation of the wheel hub 1 is not limited to motor control, but can also be controlled by a hand crank.

[0021] In the description of the present technical solution, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "inner" are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present technical solution and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present technical solution.

[0022] At the same time, in the description of this technical solution, it should be noted that, unless otherwise clearly specified and limited, the terms "fixed" and "matched" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this technical solution can be understood according to specific circumstances.

[0023] Although embodiments of the present technical solution 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 embodiments without departing from the principles and spirit of the present technical solution, and that the scope of the present technical solution is defined by the appended claims and their equivalents.

Claims

1. A flexible shaft control mechanism, comprising a fixed bearing assembly (5) and a movable bearing assembly (6) respectively arranged on both sides of a flexible shaft (2), wherein a fixed bearing (51) and a movable bearing (61) at the front ends of the fixed bearing assembly (5) and the movable bearing assembly (6) jointly clamp the flexible shaft (2), characterized in that: The movable bearing assembly (6) is hinged into a rotatable structure, and a compression spring (7) is provided at the top of the front end of the movable bearing assembly (6), and the compression spring (7) maintains the clamping state of the movable bearing (61) and the fixed bearing (51); a pressing assembly (8) is provided above the movable bearing assembly (6) for pressing down the rear end of the movable bearing assembly (6), and when the pressing assembly (8) is pressed down, the front end of the movable bearing assembly (6) is lifted up, thereby releasing the clamping state of the flexible shaft (2).

2. The flexible shaft control mechanism according to claim 1, characterized in that: Support seats (52) extend upwards on both sides of the middle of the fixed bearing assembly (5), the flexible shaft (2) passes through the two support seats (52), and the middle of the movable bearing assembly (6) is hinged between the two support seats (52).

3. The flexible shaft control mechanism according to claim 1, characterized in that: The movable bearing assembly (6) is divided into a front section and a rear section at the hinge of the movable bearing assembly (6), the length of the rear section is greater than the length of the front section, and the pressing assembly (8) is located at the tail end of the rear section.

4. The flexible shaft control mechanism according to claim 1, characterized in that: The pressing assembly (8) comprises a pressing rod (81), a pressing block (80) and a button (10); one end of the pressing rod (81) is hinged to the top of the movable bearing assembly (6), the button (10) is arranged at the other end of the pressing rod (81), and the pressing block (80) is arranged below the pressing rod (81) and abuts against the rear end of the movable bearing assembly (6).

5. A dredging machine, comprising a housing, a hub (1), a motor (3) for controlling the rotation of the hub (1), and a start button (9) for controlling the motor (3), characterized in that: The flexible shaft control mechanism comprises the flexible shaft control mechanism described in any one of claims 1 to 3.

6. A dredging machine, comprising a housing, a hub (1), a motor (3) for controlling the rotation of the hub (1), and a start button (9) for controlling the motor (3), characterized in that: It comprises the flexible shaft control mechanism as claimed in claim 4; the tail end of the pressure rod (81) extends toward the start button (9) of the motor (3), and the button (10) is arranged beside the start button (9).

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