Operating handle for switch cabinet

Abstract

The utility model belongs to the technical field of power switch equipment, and particularly relates to an operating handle for a switch cabinet, which comprises a middle shaft, an operating rod and a screwdriver head, the screwdriver head is assembled at one end of the middle shaft through a quick disassembly and assembly mechanism, the quick disassembly and assembly mechanism comprises an assembly groove, a lock rod, a torsion spring and other parts and can realize quick assembly and disassembly of the screwdriver head, and the middle shaft is provided with a sliding groove. The detachable screwdriver head design of the operating handle achieves the purpose that one handle has multiple purposes and is suitable for various operating rotating rod connectors, working flexibility is improved, the screwdriver head is easy and rapid to install and detach, the operating handle is simple in structure and convenient to use, and the operating handle is convenient to use. The arm of force of the operating rod can be dynamically adjusted, the arm of force is prolonged to save labor under a high-resistance working condition, the arm of force is shortened in a narrow space to avoid interference, the operating handle effectively solves the problems that a traditional handle is poor in universality and the arm of force cannot be adjusted, and the convenience and efficiency of switch cabinet operation are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of electric power switch equipment, and particularly relates to an operating handle for a switch cabinet. BACKGROUND

[0002] The switch cabinet is a core device for power distribution, control and protection in the power system, and is divided into high-voltage and low-voltage types. The cabinet body integrates circuit breakers, disconnectors and other primary components and control modules, realizes opening and closing operations through an operating mechanism, and has mechanical interlocking to prevent misoperation. The isolation mechanism forms an electrical break point during maintenance to ensure safety, and is widely used in substations and power distribution rooms. It has reliable breaking, insulation protection and other functions, and is a key device for safe operation of the power grid. The operating handle is an important tool for operating the isolation mechanism and the operating mechanism.

[0003] The existing operating handle mainly consists of the following parts: a handle, an operating shaft, etc. The working principle is to manually pull the handle body to transmit operating force to the connecting shaft to drive the isolation knife switch or circuit breaker contact to move. The isolation mechanism handle finally forms a visible electrical break point through mechanical limiting, and the operating mechanism handle completes the opening and closing control through a transmission chain. The shear pin breaks to protect the device when overloaded.

[0004] The existing operating handle has the following disadvantages: The existing operating handle adopts a fixed head design, and its interface type is single and can only adapt to a specific specification of the operating rotating rod. Different models require special handles with corresponding interfaces, which increases the burden on the operator and increases the maintenance burden. The operating lever arm of the traditional handle is fixed and cannot be adjusted according to the actual working conditions, which affects the operation accuracy and poses a safety hazard. Therefore, an operating handle for a switch cabinet is proposed to solve the above problems. INVENTION CONTENTS

[0005] To make up for the shortcomings of the existing operating handle, an operating handle for a switch cabinet is proposed.

[0006] The utility model discloses a kind of operating handles for switch cabinet, including middle shaft, operating lever is slidably assembled on the middle shaft, one end of the middle shaft is equipped with head by quick release mechanism, the quick release mechanism includes assembly slot being opened in one end of middle shaft, one end of the head is provided with insertion end matched with assembly slot, installation through-hole is opened in the circumferential side of assembly slot on the middle shaft, locking rod is rotatably arranged in installation through-hole by rotating rod, the locking rod includes locking portion and unlocking portion, insertion end is opened with the locking portion matched with the clamping groove, torsional spring is terminated between the locking rod and installation through-hole, torsional spring is used to make locking portion enter clamping groove, limiting block for limiting the rotation angle of locking rod is fixedly arranged in installation through-hole.

[0007] Preferably, the inner wall of the assembling groove is provided with a limiting strip, a limiting groove is formed on the insertion end to cooperate with the limiting strip, and the limiting strip and the limiting groove are used for limiting the axial fixation of the socket head and the middle shaft.

[0008] Preferably, a mounting sleeve is fixedly arranged on the middle shaft, an unlocking sleeve is slidably arranged in the mounting sleeve, one end of the unlocking sleeve acts on the unlocking part, and a tension spring is arranged between the unlocking sleeve and the inner wall of the mounting sleeve.

[0009] Preferably, a sliding groove is formed on the middle shaft and coincides with the central axis of the middle shaft, a sliding sleeve is slidably arranged in the sliding groove, a limiting protrusion is fixedly arranged on the sliding sleeve, a limiting groove is formed in the sliding groove to cooperate with the limiting protrusion, the limiting protrusion and the limiting groove are used for limiting the moving direction of the sliding sleeve to be parallel to the central axis of the middle shaft, and the operating rod is slidably arranged in the sliding sleeve.

[0010] Preferably, counterweight balls are arranged at both ends of the operating rod.

[0011] Preferably, a soft sleeve is arranged at the hand-holding end of the middle shaft.

[0012] The utility model discloses the beneficial effect:

[0013] 1. high versatility and flexibility: the detachable socket head design makes the operating handle can adapt to the operating rod interface on the operating mechanism and the isolation mechanism of various types of switch cabinets, realizes "one handle multiuse", meets the diversified work demand, and the staff does not need to prepare multiple handles for different interfaces, and in actual work, the socket head can be quickly replaced according to the specific demand, the installation and dismounting process of the socket head is simple and fast, and the working efficiency is improved.

[0014] Torque self-adaptive optimization: the operating rod can slide along the sliding groove of the middle shaft, realizes the dynamic adjustment of the force arm, in the high resistance working condition needing larger torque, can generate greater torque output by lengthening the force arm with smaller operating force, easily overcomes the resistance, reduces the operation difficulty and labor intensity, and in the narrow operation environment, shortening the force arm can avoid the interference between the operating rod and the cabinet part, realizes the accurate and flexible small range operation. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings described herein are used to provide further understanding of the utility model and constitute a part of the application. The illustrative embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute improper limitation on the utility model. In the drawings:

[0016] Figure 1 It is the structure diagram and sectional view of the utility model as a whole.

[0017] Figure 2 It isFigure 1 Structure enlarged view at middle A;

[0018] Legend:

[0019] 1, middle shaft; 2, operating rod; 3, quick dismounting mechanism; 301, assembly groove; 302, mounting through hole; 303, lock rod; 3031, locking part; 3032, unlocking part; 304, limiting block; 305, limiting strip; 306, limiting groove; 307, mounting sleeve; 308, unlocking sleeve; 309, tension spring; 4, bit; 401, insertion end; 402, clamping groove; 5, sliding groove; 6, sliding sleeve; 7, limiting block; 8, limiting groove; 9, counterweight ball; 10, soft sleeve. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] The specific embodiments are given below.

[0022] Please refer to Figures 1-2 The utility model discloses an operating handle for switch cabinet, including middle shaft 1, operating rod 2 is slidably assembled on the middle shaft 1, the one end of middle shaft 1 is assembled with bit 4 through quick dismounting mechanism 3, quick dismounting mechanism 3 includes the assembly groove 301 of being opened in the one end of middle shaft 1, and the one end of bit 4 is provided with the insertion end 401 matched with assembly groove 301, the circumferential side of middle shaft 1 is arranged with the mounting through hole 302 in ring array in assembly groove 301, the lock rod 303 is rotatably arranged in mounting through hole 302 through the rotating rod, the lock rod 303 includes locking part 3031 and unlocking part 3032, the insertion end 401 is opened with the clamping groove 402 matched with locking part 3031, and torsional spring is terminated between lock rod 303 and mounting through hole 302, and torsional spring is used to make locking part 3031 enter clamping groove 402, the limiting block 304 for limiting the rotation angle of lock rod 303 is fixedly arranged in mounting through hole 302, and the hand end of middle shaft 1 is provided with soft sleeve 10;

[0023] The inner wall of the assembling groove 301 is provided with a limiting strip 305, a limiting groove 306 matched with the limiting strip 305 is formed on the insertion end 401, the limiting strip 305 and the limiting groove 306 are used for limiting the axial fixation of the bit 4 and the shaft 1, the mounting sleeve 307 is fixedly sleeved on the shaft 1, the unlocking sleeve 308 is slidably arranged in the mounting sleeve 307, the unlocking sleeve 308 is slidably sleeved on the shaft 1, one end of the unlocking sleeve 308 acts on the unlocking part 3032, and the unlocking sleeve 308 and the inner wall of the mounting sleeve 307 are terminated by the tension spring 309; in working, the worker inserts the insertion end 401 of the bit 4 into the assembling groove 301 of the shaft 1, in the insertion process, the limiting strip 305 slides into the limiting groove 306, thereby playing a positioning and guiding role on the insertion end 401, ensuring that the bit 4 is correctly inserted and cannot rotate in the circumferential direction, meanwhile, the insertion end 401 extrudes the clamping part 3031 of the locking rod 303, so that the locking rod 303 rotates around the rotating rod, at this time, the torsional spring is compressed, and the elastic potential energy is stored; when the insertion end 401 is completely inserted in place, the clamping groove 402 is aligned with the clamping part 3031, the torsional spring releases the elastic potential energy, the clamping part 3031 is clamped into the clamping groove 402, and the bit 4 is firmly locked on the shaft 1, then the shaft 1 can be rotated, the soft sleeve 10 at the handheld end of the shaft 1 is made of soft and anti-skid material, the comfort of holding can be improved, the hand fatigue is reduced, and the stability and accuracy of operation are improved; when the worker needs to disassemble the bit 4, the operator pushes the unlocking sleeve 308, the unlocking sleeve 308 slides in the mounting sleeve 307 and overcomes the pulling force of the tension spring 309, one end of the unlocking sleeve 308 pushes the unlocking part 3032, thereby making the locking rod 303 rotate around the rotating rod, the clamping part 3031 is withdrawn from the clamping groove 402, at this time, the locking relationship between the bit 4 and the shaft 1 is released, and the operator can easily pull out the bit 4 from the assembling groove 301, when the operator releases the unlocking sleeve 308, the tension spring 309 pulls the unlocking sleeve 308 back to the original position, so as to prepare for the next installation of the bit; the detachable bit 4 can adapt to the operation rotating rod interface on the operation mechanism and the isolation mechanism in various types of switch cabinets, realizes "one handle with multiple uses", meets diversified working requirements, greatly improves the flexibility of work, and the installation and disassembly process of the bit 4 is simple and fast.

[0024] Furthermore, a sliding groove 5 coinciding with the central axis of the central shaft 1 is provided on the central shaft 1. A sliding sleeve 6 is slidably fitted in the sliding groove 5. A limiting protrusion 7 is fixedly provided on the upper part of the sliding sleeve 6. A limiting groove 8 that cooperates with the limiting protrusion 7 is provided in the sliding groove 5. The limiting protrusion 7 and the limiting groove 8 cooperate to limit the movement direction of the sliding sleeve 6 to be parallel to the central axis of the central shaft 1. The operating lever 2 is slidably fitted in the sliding sleeve 6. During operation, when the operator moves the operating lever 2 to operate the mechanism inside the switch cabinet ( When operating the lever 2 via a manual energy storage shaft or isolation mechanism (such as an operating shaft), the sliding adjustment function of the lever 2 can achieve dynamic optimization of the lever arm. The specific process is as follows: When a larger torque is required, the operator slides the sliding sleeve 6 along the groove 5 of the central shaft 1 away from the bit 4, thereby moving the lever 2 to change the distance between it and the bit 4. Then, the operator pulls the lever 2 to make it slide within the sliding sleeve 6. When the operator holds and pulls one end of the lever 2 so that this end is farther away from the central shaft 1, the lever... The other end of the lever 2 is close to the central shaft 1. According to the lever principle, the effective lever arm is significantly lengthened, thereby generating a larger torque output with a smaller operating force, easily overcoming high resistance conditions. Conversely, in scenarios with narrow space and limited operating range, the operator can slide the sliding sleeve 6 towards the bit 4 to shorten the distance between the operating lever 2 and the central shaft 1, reducing the lever arm. This avoids interference between the operating lever 2 and other parts of the cabinet, and enables precise and flexible small-range operation, meeting the operational needs under different working conditions. Throughout the adjustment process, the limiting protrusion 7 and the limiting groove 8 always maintain cooperation, ensuring that the sliding sleeve 6 can only move along the central axis of the central shaft 1, ensuring that the operating force is stably and efficiently transmitted to the central shaft 1, thereby driving the bit 4 to achieve precise operation. By flexibly adjusting the distance between the operating lever 2 and the central shaft 1, the lever arm length can be dynamically changed according to the actual operating resistance, increasing the output torque when the operator applies the same force, significantly reducing the difficulty of operation and labor intensity, especially suitable for equipment that has not been operated for a long time and has high resistance.

[0025] Furthermore, the two ends of the operating lever 2 are equipped with counterweight balls 9. During operation, according to the lever principle, the operating lever 2 can be regarded as a lever. The force applied by the operator acts on the operating lever 2, and the bit 4 is the resistance point. The counterweight balls 9 at both ends of the operating lever 2 increase the overall weight and rotational inertia of the operating lever 2. When the operator turns the operating lever 2, the counterweight balls 9 will generate an additional inertial force, which is superimposed on the force applied by the operator during operation, thereby providing a greater torque during operation.

[0026] In the description of the specification, the description of the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0027] The basic principle, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. An operating handle for a switchgear, characterized in that: The device includes a central shaft (1), on which an operating lever (2) is slidably mounted. A bit (4) is mounted at one end of the central shaft (1) via a quick-release mechanism (3). The quick-release mechanism (3) includes a mounting groove (301) at one end of the central shaft (1). One end of the bit (4) has an insertion end (401) that mates with the mounting groove (301). Mounting through holes (302) are arranged in a circular array around the mounting groove (301) on the central shaft (1). The mounting through holes (302) allow passage through... A locking rod (303) is rotatably mounted on a rotating rod. The locking rod (303) includes a locking part (3031) and an unlocking part (3032). The insertion end (401) is provided with a slot (402) that cooperates with the locking part (3031). A torsion spring is connected between the locking rod (303) and the mounting through hole (302). The torsion spring is used to make the locking part (3031) engage with the slot (402). A limiting block (304) for limiting the rotation angle of the locking rod (303) is fixedly provided in the mounting through hole (302).

2. The operating handle for a switchgear according to claim 1, characterized in that: The inner wall of the assembly groove (301) is provided with a limiting strip (305), and the insertion end (401) is provided with a limiting groove (306) that cooperates with the limiting strip (305). The limiting strip (305) and the limiting groove (306) are used to restrict the axial fixation of the bit (4) and the central shaft (1).

3. The operating handle for a switchgear according to claim 1, characterized in that: An installation sleeve (307) is fixedly fitted on the central shaft (1). An unlocking sleeve (308) is slidably disposed inside the installation sleeve (307). The unlocking sleeve (308) is slidably fitted on the central shaft (1). One end of the unlocking sleeve (308) acts on the unlocking part (3032). A tension spring (309) is connected between the unlocking sleeve (308) and the inner wall of the installation sleeve (307).

4. The operating handle for a switchgear according to claim 1, characterized in that: The central shaft (1) has a groove (5) that coincides with its central axis. A sliding sleeve (6) is slidably fitted in the groove (5). A limiting protrusion (7) is fixedly provided on the upper part of the sliding sleeve (6). A limiting groove (8) that cooperates with the limiting protrusion (7) is provided in the groove (5). The limiting protrusion (7) and the limiting groove (8) cooperate to limit the movement direction of the sliding sleeve (6) to be parallel to the central axis of the central shaft (1). The operating rod (2) is slidably fitted in the sliding sleeve (6).

5. An operating handle for a switchgear according to claim 1, characterized in that: The two ends of the operating lever (2) are equipped with counterweight balls (9).

6. The operating handle for a switchgear according to claim 1, characterized in that: The handheld end of the central shaft (1) is provided with a soft sleeve (10).

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