Anti-twisting and anti-pulling device for cable joint of electric shovel

Abstract

The utility model belongs to the field of protection of electrical structures of mining electric shovels, and particularly relates to an anti-twisting and anti-pulling device for a cable joint of an electric shovel. The anti-twisting and anti-pulling device is arranged on a cable control cabinet of the electric shovel; the anti-twisting and anti-pulling device comprises an anti-twisting cable connector, a plurality of pressure sensors, a cable pipeline and a detection mechanism; the cable control cabinet is connected with the anti-twist cable connector through a cable pipeline; the pressure sensor is arranged in the anti-twist cable connector; the detection mechanism comprises a track, a detection limiting block and a cable pulling detection device; the track is arranged on the inner side of the cable pipeline, the detection limiting block is arranged on the track and slides along the track, and the cable pulling detection device is arranged at one end of the track; and the detection limiting block is sleeved on the cable.

Description

Technical Field

[0001] This utility model belongs to the field of electrical structure protection for mining electric shovels, specifically an anti-torsion and anti-pulling device for the cable connection of the electric shovel. Background Technology

[0002] Cables, consisting of multiple strands or groups of conductors twisted together, are widely used in electric shovels to provide power. However, during the use of electric shovels, the connection between the cable and the equipment is susceptible to damage such as twisting and bending. This not only affects the cable's performance and lifespan but may also threaten the stable operation of the shovel. Specifically, during the operation of the electric shovel, the forward, backward, rotating, and digging operations can easily cause the internal conductors at the cable connection to break or be damaged, and such damage is often difficult to detect and repair. Furthermore, when operating in harsh environments, such as under different working conditions and weather conditions, the cable's outer sheath is easily damaged, thus affecting the overall performance of the cable. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this utility model is to provide an anti-twisting and anti-pulling device for the cable connection of an electric shovel, aiming to solve the problem of easy damage to the cable connection of an electric shovel.

[0004] This utility model discloses an anti-twist and anti-pull device for the cable connection of an electric shovel. The anti-twist and anti-pull device is installed on the cable control cabinet of the electric shovel. The anti-twist and anti-pull device includes an anti-twist cable connection port, several pressure sensors, a cable conduit, and a detection mechanism. The cable control cabinet is connected to the anti-twist cable connection port through the cable conduit. The pressure sensors are installed inside the anti-twist cable connection port.

[0005] The detection mechanism includes a track, a detection limit block, and a cable pull detection device; the track is located inside the cable duct, the detection limit block is located on the track and slides along the track, and the cable pull detection device is located at one end of the track; the detection limit block is fitted onto the cable.

[0006] A further improvement of this utility model is that the anti-twist cable connector is horn-shaped.

[0007] A further improvement of this utility model is that four pressure sensors are provided, and the four pressure sensors are evenly distributed on the anti-twist cable connection port.

[0008] A further improvement of this utility model is that it also includes a fixed base, a support bracket, and a cable junction box; the cable control cabinet and the support bracket are both mounted on the fixed base, the support bracket is provided with a support seat for supporting the cable pipe, the support seat is provided with a through hole for the cable pipe to pass through, the cable junction box is mounted on the cable pipe, and the cable junction box is provided with an opening for the cable to pass through.

[0009] A further improvement of this utility model is that it also includes a control device, a warning light, and a buzzer. Four warning lights and four buzzers are provided, each corresponding to one of the four pressure sensors. The control device is connected to the pressure sensors, warning lights, buzzers, and cable pull detection device through a cable junction box.

[0010] A further improvement of this utility model is that the support bracket is mounted on the fixed base by screws, and the support seat is mounted on the support bracket by screws.

[0011] The beneficial effects of this utility model are:

[0012] The anti-twist cable connector of this utility model adopts a flared structure with a smooth transition, which reduces the impact on the cable connection during the movement of the electric shovel.

[0013] This invention utilizes a pressure sensor to detect the lateral pressure on the cable at the cable connection point. The cable pull detection device can detect the tension that the cable can withstand. Once the force at the connection point exceeds the set limit, a warning light flashes, issuing an alarm to prompt the driver to correct the incorrect operation.

[0014] This invention can monitor driver operations in real time. When the force at the cable connection exceeds the limit, the control device can also connect to an intelligent mining platform and upload the erroneous operation information, allowing managers to urge the driver to correct the erroneous operation. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram (I) of the present invention;

[0017] Figure 2 This is a schematic diagram (II) of the present invention;

[0018] Figure 3 This is a cross-sectional view of the present invention;

[0019] Figure 4 A schematic diagram (a) of the testing mechanism of this utility model;

[0020] Figure 5 This is a schematic diagram (II) of the testing mechanism of this utility model.

[0021] Explanation of reference numerals in the attached figures

[0022] 1. Cable control cabinet, 2. Cable junction box, 3. Pressure sensor, 4. Anti-twist cable connector, 5. Support bracket, 6. Support bracket, 7. Fixed base, 8. Detection limit block, 9. Cable duct, 10. Cable pull detection device, 11. Track, 12. Cable. Detailed Implementation

[0023] The technical solutions in the embodiments of this utility model are described clearly and completely below. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0024] The purpose of this invention is to provide an anti-twisting and anti-pulling device for the cable connection of an electric shovel, which aims to solve the problem of easy damage to the cable connection of an electric shovel.

[0025] This utility model discloses an anti-twist and anti-pull device for the cable connection of an electric shovel, which is applied to the cable control cabinet 1 of the electric shovel. The electric shovel is equipped with a fixed base 7, and the cable control cabinet 1 is mounted on the fixed base 7. The cable control cabinet 1 needs to be connected to an external cable 12, and the anti-twist and anti-pull device is installed at the connection point.

[0026] The anti-torsion and anti-pull device of this utility model includes an anti-torsion cable connection port 4, several pressure sensors 3, a cable conduit 9, a cable junction box 2, and a detection mechanism, such as... Figures 1-5 As shown. Cable control cabinet 1 is connected to anti-twist cable connector 4 via cable conduit 9. Cable 12 passes through anti-twist cable connector 4 and cable conduit 9 into cable control cabinet 1.

[0027] A support bracket 6 is installed on the fixed base 7, and a support pedestal 5 is installed on the support bracket 6. The support pedestal 5 is used to support the cable conduit 9, such as... Figures 1-3 As shown. Therefore, the support bracket 5 is provided with a through hole for the cable conduit 9 to pass through. Specifically, the fixed base 7 is provided with screw holes, and the support bracket 6 is provided with screw holes. The support bracket 6 is mounted on the fixed base 7 by the cooperation of screws and screw holes. The support bracket 6 and the support bracket 5 are also installed with screws and screw holes.

[0028] Cable junction box 2 is installed on cable conduit 9, and cable junction box 9 is connected to pressure sensor 3 via a connecting wire. Cable junction box 2 has an opening through which cable conduit 9 passes.

[0029] The anti-torsion cable connector 4 is flared, which makes the structural transition smooth and effectively mitigates the impact generated during the movement of the electric shovel. Pressure sensors 3 are installed inside the anti-torsion cable connector 4. Preferably, four pressure sensors 3 are installed, located at the top, bottom, left, and right positions of the anti-torsion cable connector 4. The rated load of the pressure sensors 3 is 2-5 kN, and the elastic element material is alloy steel. When the cable 12 deflects within the flared anti-torsion cable connector 4, the pressure sensors 3 can detect the force in the four directions (top, bottom, left, and right), and the upper limit of the measurement is 80% of the maximum lateral pressure that the cable 12 can withstand, preventing the cable 12 from exceeding its maximum bearing capacity and thus being damaged during equipment movement.

[0030] Furthermore, each pressure sensor 3 corresponds to a separate warning light and buzzer. When the cable 12 deflects in a certain direction during the movement of the electric shovel, it exerts a force on the pressure sensor 3 in that direction, which can serve as a warning.

[0031] The testing mechanism includes a track 11, a testing limit block 8, and a cable pull testing device 10, such as... Figure 4 , Figure 5 As shown. The track 11 is located inside the cable conduit 9. A detection limiting block 8 is mounted on the track 11 and fits onto the cable 12. The detection limiting block 8 can move along the track 11 as the cable 12 is stretched. A cable pull detection device 10 is located at one end of the track 11. The detection limiting block 8 reflects the light emitted by the cable pull detection device 10. The cable pull detection device 10 detects the amount of stretching generated during the pulling process of the cable 12, and thus detects the tensile force experienced by the cable 12 during the pulling process. In this invention, the cable pull detection device 10 is a laser rangefinder sensor, model 400SC7, with a measurement distance of 20mm-4000mm, a transmission rate of 0.1-30Hz, an accuracy of ±5%, a power supply specification of 220V, a power consumption of 4W, an operating environment of 0°C~60°C, 0%RH~85%RH, a resolution of 1mm, and a field of view of 19°.

[0032] A further improvement of this invention is the inclusion of a control device (not shown in the figure). An existing control device can be used, connected to the pressure sensor 3, warning light, buzzer, and cable pull detection device 10 via a cable junction box 2 and connecting wires. The control device, warning light, and buzzer are located in the operator's cab. When the force generated by the deflection or pull of the cable 12 exceeds the measured upper limit, the warning light in the corresponding direction flashes, and the buzzer sounds an alarm, reminding the electric shovel operator that the operation in that direction exceeds the normal operating range of the cable 12, and requesting immediate correction of the erroneous operation. This invention can also include a timer connected to the control device, triggered when the force on the cable 12 exceeds the limit. When the timer exceeds 30 seconds, the control device can connect to the intelligent mine management platform, sending a signal to the platform indicating that the operator is engaging in a violation, and promptly arranging for management personnel to correct the violation. The intelligent mine management platform will uniformly summarize the number of violations for each electric shovel, conduct in-depth analysis of the operator's skill proficiency, and determine whether the operator needs further training to ensure that electric shovel operators are skilled enough before starting work.

[0033] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A device for preventing twisting and pulling at the connection point of an electric shovel cable, characterized in that, The anti-torsion and anti-pull device is installed on the cable control cabinet of the electric shovel; the anti-torsion and anti-pull device includes an anti-torsion cable connector, several pressure sensors, a cable conduit, and a detection mechanism; the cable control cabinet is connected to the anti-torsion cable connector through the cable conduit; the pressure sensors are installed inside the anti-torsion cable connector; The detection mechanism includes a track, a detection limit block, and a cable pull detection device; the track is located inside the cable duct, the detection limit block is located on the track and slides along the track, and the cable pull detection device is located at one end of the track; the detection limit block is fitted onto the cable.

2. The anti-twisting and anti-pulling device for the electric shovel cable connection according to claim 1, characterized in that, The anti-twist cable connector is horn-shaped.

3. The anti-twisting and anti-pulling device for the electric shovel cable connection according to claim 1, characterized in that, Four pressure sensors are provided, and the four pressure sensors are evenly distributed on the anti-twist cable connection port.

4. The anti-twisting and anti-pulling device for the electric shovel cable connection according to claim 3, characterized in that, It also includes a fixed base, a support bracket, and a cable junction box; the cable control cabinet and the support bracket are both mounted on the fixed base, the support bracket is provided with a support seat for supporting the cable pipe, the support seat is provided with a through hole for the cable pipe to pass through, the cable junction box is mounted on the cable pipe, and the cable junction box is provided with an opening for the cable to pass through.

5. The anti-twisting and anti-pulling device for the electric shovel cable connection according to claim 3, characterized in that, It also includes a control device, warning lights, and buzzers. There are four warning lights and four buzzers, each corresponding to one of the four pressure sensors. The control device is connected to the pressure sensors, warning lights, buzzers, and cable pull detection device through a cable junction box.

6. The anti-twisting and anti-pulling device for the electric shovel cable connection according to claim 4, characterized in that, The support bracket is mounted on the fixed base by screws, and the support seat is mounted on the support bracket by screws.

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