An electromagnetic angle steel lock clip

Abstract

This invention discloses an electromagnetic angle steel clamp, comprising a clamp housing with two vertically distributed clamping arms. Each clamping arm has a clamp movably connected inside. One end of each clamp is fixedly connected to a rack, and the other end is hook-shaped. A permanent magnet core is disposed inside the rack, and an electromagnetic coil is disposed outside the rack. A backstop component, located between the two racks, is disposed inside the clamp housing to control the movement of the two racks. The electromagnetic angle steel clamp of this invention, by controlling the application of forward and reverse currents to the electromagnetic coils, can drive the clamps to slide in both directions. After the right-angle portion of the clamp housing is engaged with the angle steel, the clamps retract to lock or release the clamp. Simultaneously, the backstop component ensures the locking effect, creating a safe attachment point sufficient to support the worker. After the work is completed, the clamp is released from the angle steel. The entire operation is simple and convenient, and the safety attachment point is more securely fixed.

Description

Technical Field

[0001] This invention relates to the field of power system safety devices, and in particular to an electromagnetic angle steel locking clamp. Background Technology

[0002] In the daily operation and maintenance of power systems, high-voltage transmission lines and their towers (especially angle steel towers) require regular inspections to ensure the safe and stable operation of the power grid. With the development of automation technology, safety protection devices for climbing power towers have gradually become a research hotspot and are widely used in tasks such as tower structure inspection, maintenance, and cleaning. When climbers are performing tasks, their end effector—i.e., mechanical claws or locking devices—is a key component that ensures their stable and safe movement and operation on angle steel structures (with temporary anchoring points set at any part of the angle steel).

[0003] Currently, common angle steel locking devices mainly include linear guide type, claw type, and ring type structures. However, these traditional structures still have the following significant drawbacks in practical applications: 1. Insufficient fall protection: Most climbing safety devices cannot maintain the locking state of the angle steel when the power is off or the control system fails, posing a risk of falling and lacking a reliable safety redundancy mechanism.

[0004] 2. Poor adaptability: The existing gripper-type mechanism has a small contact area with the angle steel, making it prone to tilting and preventing workers from climbing stably along the predetermined path. Furthermore, the linear guide rail structure has a small step distance, making it difficult to cross obstacles such as hinge points and crossarms on the angle steel tower.

[0005] 3. Weak load-bearing capacity: Although some wrap-around structures can achieve clamping, their overall structure is bulky, increasing the load on the feet of personnel.

[0006] 4. Lack of mechanical self-locking function: Traditional electromagnetic adsorption devices lose their magnetism after power is cut off and cannot maintain the clamping force; while pure mechanical clamping structures require continuous power supply to maintain the clamping force, which consumes a lot of energy and has poor reliability.

[0007] To address the aforementioned issues, patent CN108406833B proposes an electromagnetic adsorption type two-degree-of-freedom redundant mechanical claw. Through a composite design of electromagnetic adsorption and mechanical clamping, combined with a multi-joint redundant structure, it aims to improve the adaptability, fall protection, and self-locking performance of climbers on angle steel towers.

[0008] However, this solution suffers from structural complexity and poor reliability. The redundant design of multiple joints increases the number of potential failure points. The robotic gripper includes multiple moving joints such as the upper foot joint (4), intermediate joint (5), circumferential joint (6), and anti-fall finger joint (8), which, along with transmission components such as gears, gear shafts, and levers, result in a complex overall structure. In harsh environments such as outdoor dust, rain, snow, and oil, the joints (especially the connecting parts 11, such as loose bolts / rivets) are prone to jamming, wear, or corrosion, reducing the long-term reliability of the system. At the same time, assembly and maintenance are difficult. Multiple moving parts have high requirements for machining accuracy and assembly tolerance, making it difficult to guarantee consistency during mass production. On-site maintenance is also cumbersome, as disassembling and replacing damaged joints is quite complicated. Summary of the Invention

[0009] This invention addresses the shortcomings of existing technologies by proposing an electromagnetic angle steel lock clip with a simple structure and high reliability.

[0010] To achieve the above objectives, the technical solution of the present invention is as follows: This invention provides an electromagnetic angle steel lock clamp, including a clamp housing. The clamp housing includes two vertically distributed clamping arms, each with a clamp movably connected inside. One end of each clamp is fixedly connected to a rack, and the other end of each clamp is barbed. A permanent magnet core is disposed inside the rack, and an electromagnetic coil is disposed outside the rack. A backstop assembly for controlling the movement of the two racks is disposed inside the clamp housing, and the backstop assembly is located between the two racks.

[0011] Furthermore, in the aforementioned electromagnetic angle steel locking clamp, the backstop assembly includes two coaxial drive wheels, which are fixedly connected to the output end of a control motor. The drive wheels are provided with teeth that engage with racks, and the two racks are distributed in different planes.

[0012] Furthermore, in the aforementioned electromagnetic angle steel lock clamp, the electromagnetic coil is electrically connected to the battery via a wire.

[0013] Furthermore, in the aforementioned electromagnetic angle steel lock clamp, a battery compartment is installed on the outside of the clamp housing, and a sealing cover is threadedly connected to the bottom of the battery compartment, with the battery installed inside the battery compartment.

[0014] Furthermore, in the aforementioned electromagnetic angle steel lock clip, the battery used is a 24-volt lithium battery.

[0015] Furthermore, in the aforementioned electromagnetic angle steel lock clamp, a positioning seat is provided on the clamp housing, and a threaded joint is internally threaded onto the positioning seat.

[0016] Furthermore, in the aforementioned electromagnetic angle steel lock clamp, one end of the threaded connector is fixedly connected to a hanging plate, and the hanging plate has multiple lifting holes.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: The electromagnetic angle steel clamp proposed in this invention features a permanent magnet core inside the clamp and an electromagnetic coil on the outside. By controlling the application of forward and reverse currents to the electromagnetic coil, the clamp can slide in both directions. After the right-angle portion of the clamp housing is engaged with the angle steel, the clamp retracts to lock or release. To ensure locking effectiveness, this invention incorporates a reverse-locking component. When forward current is applied, the motor controls the drive wheel to deflect forward, allowing the rack to slide inwards, ensuring locking and creating a safe anchor point sufficient to support the worker. After the work is completed, reverse current is applied, and the reverse-locking component controls the motor to deflect the drive wheel in the opposite direction, allowing the rack to slide outwards. The clamp releases from the angle steel, allowing the worker to move the clamp housing, change its position on the angle steel, and then set up a safety anchor point at another location to continue work. The entire operation is simple and convenient, and the safety anchor point is more securely fixed. The entire device has a simple and compact structure, significantly reducing production costs and improving portability and ease of use. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the axial structure of the electromagnetic angle steel lock clamp provided in an embodiment of the present invention.

[0020] Figure 2 This is a rear-view axial structure diagram of the electromagnetic angle steel locking clamp provided in an embodiment of the present invention.

[0021] Figure 3 This is a schematic diagram of the clamp structure of the electromagnetic angle steel locking clamp provided in an embodiment of the present invention.

[0022] Figure 4 This is a partially enlarged structural schematic diagram of the electromagnetic angle steel lock clamp provided in an embodiment of the present invention.

[0023] Figure 5 This is a cross-sectional structural diagram of the battery compartment of the electromagnetic angle steel lock clamp provided in an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures: 1. Clamp housing; 2. Clamp; 3. Rack; 4. Electromagnetic coil; 5. Drive wheel; 6. Control motor; 7. Permanent magnet core; 8. Battery; 9. Battery compartment; 10. Sealing cover; 11. Lifting hole; 12. Positioning seat; 13. Threaded joint; 14. Lifting plate. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to embodiments and accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] This invention provides an electromagnetic angle steel locking clip, such as Figure 1-4 As shown, the device includes a clamp housing 1, which includes two vertically distributed clamping arms. Each clamp arm has a clamp 2 movably connected inside. One end of each clamp 2 is fixedly connected to a rack 3, and the other end of the clamp 2 is barbed. A permanent magnet core 7 is disposed inside the rack 3, and an electromagnetic coil 4 is disposed outside the rack 3. A backstop assembly that controls the movement of the two racks 3 is disposed inside the clamp housing 1, and the backstop assembly is located between the two racks 3.

[0027] Specifically, the backstop assembly includes two coaxial drive wheels 5, which are fixedly connected to the output end of a control motor 6. Each drive wheel 5 has teeth that mesh with two racks 3, which are distributed in different planes. The two drive wheels 5 are coaxially staggered and controlled simultaneously by a single control motor 6, saving space and equipment, resulting in a more compact structure.

[0028] The rack 3 has a permanent magnet core 7 inside and an electromagnetic coil 4 outside. By controlling the application of forward and reverse current to the electromagnetic coil 4, the rack 3 can drive the clamp 2 to slide forward and backward. In use, after the right-angled part of the clamp housing 1 is engaged with the angle steel, forward current is applied, and the rack 3 drives the clamp 2 to retract and clamp the angle steel, locking it in place. Simultaneously, to ensure the locking effect, a reverse-clamping component is designed. The control motor 6 is activated to control the drive wheel 5 to deflect forward, allowing the rack 3 to slide only inward, ensuring locking and creating a safe anchor point sufficient to support the worker. After the work is completed, reverse current is applied, and the rack 3 drives the clamp 2 to extend and disengage from the angle steel. Simultaneously, in the reverse-clamping component, the control motor 6 controls the drive wheel 5 to deflect in the reverse, allowing the rack 3 to slide only outward. The clamp 2 releases its grip on the angle steel, and the worker can move the clamp housing 1 to change its position on the angle steel, then build a safety anchor point in another location to continue work. The entire operation is simple and convenient, and the safety anchor point is more securely fixed.

[0029] In the aforementioned electromagnetic angle steel lock clamp, the electromagnetic coil 4 is electrically connected to the battery 8 via a wire. Specifically, the battery is a 24-volt lithium battery. Figure 2 and Figure 5As shown, a battery compartment 9 is installed on the outside of the clamp housing 1. A sealing cover 10 is threadedly connected to the bottom of the battery compartment 9, and the battery 8 is installed inside the battery compartment 9. The battery compartment 9 allows the battery 8 to be inserted securely, and the sealing cover 10 provides protection, ensuring a more stable installation. This eliminates the need for a separate power cord, making the angle iron clamp more convenient to move and use.

[0030] like Figure 2 and Figure 4 As shown, the clamp housing 1 is provided with a positioning seat 12, and the internal thread of the positioning seat 12 is connected to a threaded connector 13. One end of the threaded connector 13 is fixedly connected to a lifting plate 14, and the lifting plate 14 has multiple lifting holes 11. With the positioning seat 12 and the threaded connector 13, the operator can more easily replace the lifting plate 14. Depending on the operator's needs, a lifting plate 14 with multiple lifting holes 11 can be selected, which has a wider range of applications and is more convenient to use. It can ensure that the operator has a safe anchor point when working at height, and the safety performance is better.

[0031] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An electromagnetic angle steel lock clamp, comprising a clamp housing (1), characterized in that: The clamp housing (1) includes two vertically distributed clamping arms, and a clamp (2) is movably connected inside each of the two clamping arms. One end of the clamp (2) is fixedly connected to a rack (3), and the other end of the clamp (2) is barbed. A permanent magnet core (7) is provided inside the rack (3), and an electromagnetic coil (4) is provided outside the rack (3). A backstop assembly that can control the movement of the two racks (3) is provided inside the clamp housing (1), and the backstop assembly is located between the two racks (3).

2. The electromagnetic angle steel lock clamp according to claim 1, characterized in that, The backstop assembly includes two coaxial drive wheels (5), which are fixedly connected to the output end of a control motor (6). The drive wheels (5) are provided with teeth that cooperate with the rack (3), and the two racks (3) are distributed in different planes.

3. The electromagnetic angle steel lock clip according to claim 1, characterized in that, The electromagnetic coil (4) is electrically connected to the battery (8) via a wire.

4. The electromagnetic angle steel lock clip according to claim 3, characterized in that, A battery compartment (9) is installed on the outside of the clamp housing (1). A sealing cover (10) is threadedly connected to the bottom of the battery compartment (9). The battery (8) is installed inside the battery compartment (9).

5. The electromagnetic angle steel lock clip according to claim 3, characterized in that, The battery (8) is a 24-volt lithium battery.

6. The electromagnetic angle steel lock clamp according to claim 1, characterized in that, The clamp housing (1) is provided with a positioning seat (12), and the internal thread of the positioning seat (12) is connected to a threaded joint (13).

7. The electromagnetic angle steel lock clip according to claim 6, characterized in that, One end of the threaded joint (13) is fixedly connected to a hanging plate (14), and the hanging plate (14) has multiple hanging holes (11).

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