A float switch anti-electric shock maintenance device

Abstract

This utility model relates to a float switch anti-electric shock maintenance device, including a first sleeve and a second sleeve. The second sleeve is arranged parallel to the first sleeve and can slide along the axial direction of the first sleeve. A first movable rod that can be pulled and adjusted is installed at the end of the first sleeve, and a second movable rod that can be pulled and adjusted is installed at the end of the second sleeve. A fixed clamp is vertically fixed to the end of the first movable rod, and a movable clamp is vertically fixed to the end of the second movable rod. The fixed clamp and the movable clamp cooperate to clamp the float switch cable. This utility model can be inserted into the pit and, by clamping the cable, can control the float to rise or fall, thereby simulating the start or stop of the float switch. It is easy to operate and eliminates the need for bracket disassembly and assembly. Moreover, during maintenance, the float is held by the fixed clamp and the movable clamp, so the operator does not directly touch the float, greatly reducing the risk of electric shock.

Description

Technical Field

[0001] This utility model relates to the field of float switch maintenance technology, and in particular to a float switch anti-electric shock maintenance device. Background Technology

[0002] A cable-type float switch is a switch that uses the principles of gravity and buoyancy to regulate the liquid level in a bucket, tank, or well. It is suitable for AC 50 / 60Hz applications with a rated voltage of AC220V. It is mainly used in construction, water level management, household appliances, and industrial equipment.

[0003] Currently, power plants use cable-type float switches in their wastewater sumps to control the automatic water supply or drainage of wastewater pumps. The installation method involves a detachable bracket mounted on the side wall of the sump, with the float switch's counterweight fixed to the bracket. Each time the float switch is inspected to determine its condition, the bracket must be disassembled, then lifted out of the sump, and finally the float switch removed. The float switch is then lowered or raised to simulate its start-up or stop, making the inspection process extremely cumbersome. Furthermore, the float switch is energized, posing a risk of electric shock to maintenance personnel.

[0004] Based on the above technical problems, and in accordance with the principles of simple structure, practicality and economy, the inventor proposed a float switch anti-electric shock maintenance device. Summary of the Invention

[0005] This utility model addresses the shortcomings of existing technologies by providing a float switch anti-electric shock maintenance device.

[0006] This utility model is achieved through the following technical solution: a float switch anti-electric shock maintenance device is provided, including a first sleeve and a second sleeve. The second sleeve is arranged parallel to the first sleeve and can slide along the axial direction of the first sleeve. A first movable rod that can be pulled and adjusted is installed at the end of the first sleeve, and a second movable rod that can be pulled and adjusted is installed at the end of the second sleeve. A fixed clamp is vertically fixed to the end of the first movable rod, and a movable clamp is vertically fixed to the end of the second movable rod. The fixed clamp and the movable clamp cooperate to clamp the float switch cable.

[0007] Preferably, the first movable rod is inserted into the first sleeve, and a fastening bolt for tightening the first movable rod is threaded onto the wall of the first sleeve. Loosening the fastening bolt allows the first movable rod to move in and out of the first sleeve, thereby achieving length adjustment to accommodate pits of different depths.

[0008] Preferably, the second movable rod is inserted into the second sleeve, and a fixing bolt for tightening the second movable rod is threaded onto the wall of the second sleeve. Loosening the fixing bolt allows the second movable rod to move in and out of the second sleeve, thereby achieving length adjustment to accommodate pits of different depths.

[0009] Preferably, in order to facilitate cable clamping, both the fixed clamp and the movable clamp are provided with slots for cable embedding.

[0010] Preferably, two guide sleeves are fixedly connected at intervals to the outer wall of the first sleeve, and the second sleeve passes through the two guide sleeves in sequence, and the second sleeve can slide along the two guide sleeves. The sliding adjustment of the second sleeve thereby realizes the separation and joining of the fixed clamp and the movable clamp.

[0011] Preferably, to facilitate the repositioning of the second sleeve after testing, a spring is fitted onto the second sleeve, and a positioning plate is fixed to the outer wall of the second sleeve. The spring is located between the positioning plate and one of the guide sleeves; one end of the spring is fixed to the positioning plate, and the other end rests against the guide sleeve. When the moving clamp moves towards the fixed clamp, the second sleeve, carrying the positioning plate and the spring, moves forward together. The guide sleeve limits the movement, causing the spring to compress. After testing, the second sleeve is released, the spring relaxes, and pushes the second sleeve back to its original position, while the fixed clamp and the moving clamp separate.

[0012] Preferably, a handle is connected to the first end of the first sleeve, and a rubber sleeve with anti-slip texture is fitted on the handle.

[0013] Preferably, the first movable rod, the second movable rod, the fixed clamping plate, and the movable clamping plate are all made of insulating material, preferably PVC material.

[0014] The beneficial effects of this utility model are as follows:

[0015] This invention can be inserted into a pit and used to clamp the cable to control the float's height, thus simulating the start or stop of a float switch. It is easy to operate and eliminates the need for bracket disassembly and assembly. Furthermore, during maintenance, the float is held in place by a combination of fixed and movable clamps, preventing operators from directly touching the float and greatly reducing the risk of electric shock. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention when the fixed clamping plate and the movable clamping plate are separated;

[0017] Figure 2 This is a schematic diagram of the structure of the fixed clamp and the movable clamp of this utility model when they are combined;

[0018] As shown in the figure:

[0019] 1. First sleeve, 2. Handle, 3. Guide sleeve, 4. Second sleeve, 5. Positioning plate, 6. Spring, 7. Fastening bolt, 8. Fixing bolt, 9. First movable rod, 10. Second movable rod, 11. Moving clamp, 12. Fixing clamp, 13. Slot. Detailed Implementation

[0020] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0021] like Figure 1-2 As shown, this utility model includes a first sleeve 1 and a second sleeve 4. The second sleeve 4 is arranged parallel to the first sleeve 1 and can slide along the axial direction of the first sleeve 1. A first movable rod 9 that can be pulled and adjusted is installed at the end of the first sleeve 1. A second movable rod 10 that can be pulled and adjusted is installed at the end of the second sleeve 4. A fixed clamping plate 12 is vertically fixed to the end of the first movable rod 9. A movable clamping plate 11 is vertically fixed to the end of the second movable rod 10. The fixed clamping plate 12 and the movable clamping plate 11 cooperate to clamp the cable of the float switch.

[0022] In this embodiment, the first movable rod 9 is inserted into the first sleeve 1, and a fastening bolt 7 for tightening the first movable rod 9 is threaded onto the wall of the first sleeve 1. By loosening the fastening bolt 7, the first movable rod 9 can move in and out of the first sleeve 1, thereby achieving length adjustment to adapt to pits of different depths.

[0023] In this embodiment, the second movable rod 10 is inserted into the second sleeve 4, and a fixing bolt 8 for tightening the second movable rod 10 is threaded onto the wall of the second sleeve 4. By loosening the fixing bolt 8, the second movable rod 10 can move in and out of the second sleeve 4, thereby achieving length adjustment to adapt to pits of different depths.

[0024] In this embodiment, in order to facilitate the clamping of cables, slots 13 for cable embedding are provided on both the fixed clamping plate 12 and the movable clamping plate 11.

[0025] In this embodiment, two guide sleeves 3 are fixedly connected at intervals to the outer wall of the first sleeve 1, and the second sleeve 4 passes through the two guide sleeves 3 in sequence. The second sleeve 4 can slide along the two guide sleeves 3. The sliding adjustment of the second sleeve 4 thereby realizes the separation and joining of the fixed clamping plate 12 and the movable clamping plate 11.

[0026] In this embodiment, to facilitate the reset of the second sleeve 4 after testing, a spring 6 is fitted onto the second sleeve 4, and a positioning plate 5 is fixed to the outer wall of the second sleeve 4. The spring 6 is located between the positioning plate 5 and one of the guide sleeves 3. One end of the spring 6 is fixed to the positioning plate 5, and the other end of the spring 6 rests against the guide sleeve 3. When the moving clamp 11 moves towards the fixed clamp 12, the second sleeve 4, carrying the positioning plate 5 and the spring 6, moves forward together. The guide sleeve 3 limits the movement, causing the spring 6 to compress. After the test is completed, the second sleeve 4 is released, the spring 6 relaxes, and pushes the second sleeve 4 back to its original position. At the same time, the fixed clamp 12 and the moving clamp 11 separate.

[0027] In this embodiment, a handle 2 is connected to the first end of the first sleeve 1, and a rubber sleeve with anti-slip texture is fitted on the handle 2.

[0028] In this embodiment, the first movable rod 9, the second movable rod 10, the fixed clamping plate 12, and the movable clamping plate 11 are all made of insulating material, preferably PVC material.

[0029] In practical use, hold handle 2 with one hand and the second sleeve 4 with the other. Insert the device into the pit and separate the fixed clamp 12 and the movable clamp 11. First, hook the float switch cable with the fixed clamp 12. Then, push the second sleeve 4 forward with the other hand, causing the movable clamp 11 to move forward and cooperate with the fixed clamp 12 to clamp the cable. After clamping the cable, the float can be raised or lowered to simulate the start or stop of the float switch. The condition of the float switch can be judged in conjunction with the operation of the sewage pump.

[0030] This invention can be inserted into a pit and used to clamp the cable to control the float to rise or fall, thereby simulating the start or stop of a float switch. It is easy to operate and eliminates the need for bracket disassembly and assembly. Furthermore, during maintenance, the float is held in place by the fixed clamp 12 and the movable clamp 11, preventing operators from directly touching the float and greatly reducing the risk of electric shock.

[0031] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A float switch anti-electric shock maintenance device, characterized in that: It includes a first sleeve and a second sleeve, the second sleeve is arranged parallel to the first sleeve and can slide along the axial direction of the first sleeve, a first movable rod that can be pulled and adjusted is installed at the end of the first sleeve, a second movable rod that can be pulled and adjusted is installed at the end of the second sleeve, a fixed clamp is vertically fixed to the end of the first movable rod, and a movable clamp is vertically fixed to the end of the second movable rod. The fixed clamp and the movable clamp cooperate to clamp the cable of the float switch.

2. The float switch anti-electric shock maintenance device according to claim 1, characterized in that: The first movable rod is inserted into the first sleeve, and a fastening bolt for tightening the first movable rod is threaded onto the wall of the first sleeve.

3. The float switch anti-electric shock maintenance device according to claim 2, characterized in that: The second movable rod is inserted into the second sleeve, and a fixing bolt for tightening the second movable rod is threaded onto the wall of the second sleeve.

4. The float switch anti-electric shock maintenance device according to claim 1, characterized in that: Both the fixed clamp and the movable clamp are equipped with slots for cable embedding.

5. The float switch anti-electric shock maintenance device according to claim 1, characterized in that: Two guide sleeves are fixed at intervals on the outer wall of the first sleeve, and the second sleeve passes through the two guide sleeves in sequence. The second sleeve can slide along the two guide sleeves.

6. The float switch anti-electric shock maintenance device according to claim 5, characterized in that: A spring is fitted onto the second sleeve, and a positioning plate is fixed to the outer wall of the second sleeve. The spring is located between the positioning plate and one of the guide sleeves. One end of the spring is fixed to the positioning plate, and the other end of the spring rests against the guide sleeve.

7. The float switch anti-electric shock maintenance device according to claim 1, characterized in that: A handle is connected to the first end of the first sleeve, and a rubber sleeve with anti-slip texture is fitted on the handle.

8. The float switch anti-electric shock maintenance device according to claim 1, characterized in that: The first movable rod, the second movable rod, the fixed clamp, and the movable clamp are all made of insulating material.

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