One-way safety wrench

Abstract

The invention provides a one-way safety wrench. The one-way safety wrench comprises a handle assembly, a sleeve assembly and a one-way clutch assembly. The one-way clutch assembly comprises a clutch cavity structure, a first quick release structure, a clutch disc structure, an ejection spring, a transmission shaft and a second quick release structure, the clutch disc structure is provided with first ratchets, the clutch cavity structure is internally provided with second ratchets, and the first ratchets are matched with the second ratchets; the clutch disc structure is further provided with a matching hole. The two ends of the transmission shaft are a driving end and a connecting end respectively, and the driving end is movably arranged in a matching hole of the clutch cavity structure in the axial direction of the clutch cavity structure and abuts against the ejection spring. The ejection spring is arranged in the protection cavity and abuts against the transmission shaft. And the second quick release structure is arranged on the connecting end. The to-be-operated workpiece is unidirectionally driven in the driving direction, and when the to-be-operated workpiece rotates in the direction opposite to the driving direction, the to-be-operated workpiece is prevented from driving the wrench to hurt workers when rotating reversely.

Description

Technical Field

[0001] The invention relates to the technical field of electric wrenches, in particular to a one-way safety wrench. Background Art

[0002] With the development of automation and intelligence in power systems, the widespread use of facilities such as electrical cabinets and switch cabinets has provided great convenience for power grid operation and maintenance, but it has also put forward higher requirements for safe operation. During the daily maintenance and overhaul of electrical cabinets, the safe operation of switch cabinets has become a major challenge for operation and maintenance personnel. The traditional operation method is usually to manually turn or rotate the control handle of the switch cabinet to open and close and lock the equipment. If there is a sudden call during this process, the switch action will cause the operating handle to rotate in the opposite direction, which may cause the staff to be hit by the suddenly rotating wrench, causing safety hazards and personal injury.

[0003] However, the existing electrical wrenches for operating switch cabinets have the following disadvantages:

[0004] 1. Lack of active protection and poor stability: The existing wrenches lack active safety protection design during operation and cannot provide adequate protection for operators in case of sudden power outages. Once the live components in the switch cabinet are accidentally activated, the operating handle is likely to rotate, causing harm to the operator. Although some existing wrenches adopt a simple clutch structure design, most of them cannot be effectively locked or automatically disengaged when the power is quickly turned on, and the reaction force will still be transmitted to the operating handle of the wrench, making it difficult to ensure the safety of the operator's operation.

[0005] 2. Lack of adaptability: existing wrenches cannot be used for a variety of equipment; due to the diverse lock hole structures and sizes of electrical cabinets and switch cabinets, traditional wrenches are difficult to adapt to a variety of lock holes; most common wrenches are only suitable for a single type of lock hole and do not support multiple specifications of lock hole types (such as hexagonal, round tooth, plum blossom, etc.), resulting in on-site workers needing to carry a variety of wrench tools, increasing the operating burden and reducing work efficiency;

[0006] 3. Imperfect safety locking mechanism: When encountering emergencies, existing wrenches usually rely on locking bolts or simple mechanical locking designs. The locking mechanism is single and unstable. Some existing wrenches may loosen quickly or fail when power is suddenly turned on or the equipment is in motion, and cannot be effectively fixed inside the lock hole, exposing operators to potential risks during work;

[0007] 4. Inconvenient replacement and disassembly: The structural design of traditional electrical cabinet operating wrenches is relatively simple, and usually does not support quick replacement or disassembly functions. When workers operate multiple electrical cabinets, if the lock hole models are incompatible, they must replace wrenches of different specifications. The process is cumbersome and time-consuming, especially in emergency situations. Frequent replacement of tools will delay repair time and reduce work efficiency.

[0008] 5. Poor durability and short service life: Existing wrenches are prone to wear and loosening during frequent use. Especially in high-intensity power grid inspection environments, the durability of materials and structures is insufficient, requiring frequent replacement of equipment.

[0009] In summary, the existing wrenches currently have major defects in dealing with sudden electrical situations and adapting to various lock hole structures. In terms of safety protection of electrical cabinet power-on operations, the existing wrenches lack automated protection design, making it difficult to effectively protect the safety of workers when a sudden call comes on; in terms of adaptability to various lock holes, the structural design of the existing wrenches is relatively simple, making it difficult to be compatible with electrical cabinet lock holes of different models and sizes, and the disassembly and assembly are complicated, and the replacement is time-consuming; due to the existence of the above technical defects, there is an urgent need for a new type of safety wrench that can meet the adaptability requirements of various switch lock holes while realizing the protection function, so as to improve the safety and convenience of electrical operations on different electrical cabinets and switch cabinets. Summary of the invention

[0010] The present invention provides a one-way safety wrench to solve the problem that the wrench in the prior art has poor safety protection function and cannot meet the adaptability requirements of various switch lock holes, thereby resulting in poor safety and convenience in electrical operations on different electrical cabinets and switch cabinets.

[0011] In order to solve the above problems, the present invention provides a one-way safety wrench, comprising: a handle assembly, a sleeve assembly and a one-way clutch assembly; the one-way clutch assembly comprises a clutch cavity structure, a first quick-release structure, a clutch plate structure, an ejection spring, a transmission shaft and a second quick-release structure, the first quick-release structure being arranged at one end of the clutch cavity structure for detachably cooperating with the sleeve assembly; the clutch cavity structure has a protective cavity inside, the clutch plate structure is rotatably arranged in the protective cavity, the clutch plate structure has a first ratchet tooth, the clutch cavity structure has a second ratchet tooth inside, the first ratchet tooth cooperates with the second ratchet tooth, when the clutch plate structure rotates along the driving direction, the first ratchet tooth meshes with the second ratchet tooth, so that the clutch plate structure drives the clutch cavity structure to rotate along the driving direction; when the clutch cavity structure or the clutch plate structure rotates in a direction opposite to the driving direction, the first ratchet tooth slides relative to the second ratchet tooth, so that torque cannot be transmitted between the clutch cavity structure and the clutch plate structure; the clutch plate structure also has a matching hole; The two ends of the moving shaft are respectively a driving end and a connecting end. The driving end can be movably arranged in the matching hole of the clutch cavity structure along the axial direction of the clutch cavity structure, and abuts against the ejection spring; the ejection spring is arranged in the protective cavity and abuts against the transmission shaft, which is used to provide an elastic force for driving the transmission shaft away from the clutch plate structure; the second quick-release structure is arranged on the connecting end, which is used to detachably cooperate with the handle assembly; wherein, the ejection spring is used to drive the driving end of the transmission shaft to disengage from the matching hole; the sleeve assembly is used to cooperate with the workpiece to be operated, and the handle assembly is used for holding by the staff. By pushing the handle assembly to move along the axial direction of the clutch cavity structure, the driving end is driven to overcome the elastic force of the ejection spring to move, so that at least a part of the driving end is inserted into the matching hole, and the driving end is limitedly cooperated with the inner wall of the matching hole, and the handle assembly is rotated along the driving direction. The handle assembly drives the clutch plate structure to rotate along the driving direction through the transmission shaft, and the clutch plate structure drives the clutch cavity structure and the sleeve assembly to rotate along the driving direction to twist the workpiece to be operated.

[0012] Furthermore, the clutch plate structure includes a built-in bolt and a clutch plate, the clutch plate has a first ratchet, the clutch plate is rotatably sleeved on the outer periphery of the built-in bolt, and is limitedly matched with the outer periphery of the built-in bolt; the built-in bolt is fixedly arranged in the protective cavity; wherein, the end of the built-in bolt away from the clutch cavity structure has a limiting portion, and the limiting portion is used to stop the clutch plate to prevent the clutch plate from detaching from the end of the built-in bolt away from the clutch cavity structure.

[0013] Furthermore, the clutch cavity structure includes a clutch cavity, external bolts, a cavity cover and a sleeve; the cavity cover is detachably fixed to the clutch cavity by external bolts; the interior of the cavity cover and the interior of the sleeve are both connected to the interior of the clutch cavity to jointly form a protective cavity; the cavity cover has a through hole at one end away from the clutch cavity, the through hole is connected to the protective cavity, at least a portion of the sleeve passes through the through hole and is limitedly engaged with the inner wall of the through hole; the sleeve is detachably fixed on the cavity cover, the driving end is movably arranged on the sleeve along the axial direction of the clutch cavity, and the ejection spring is limitedly engaged with the inner wall of the protective cavity.

[0014] Furthermore, the shaft sleeve is made of self-lubricating material to lubricate the relative sliding between the driving end and the shaft sleeve; at least a part of the ejection spring is located in the shaft sleeve.

[0015] Furthermore, the shaft sleeve is made of a graphite-copper composite material.

[0016] Further, the sleeve assembly includes at least one of an internal tooth type joint, an internal hexagonal joint and a plum blossom type joint to correspond to at least one of a protrusion with external teeth, an external hexagonal protrusion and a plum blossom type inner hole on the workpiece to be operated.

[0017] Further, the first quick-release structure includes a universal ball and an elastic member, one end of the clutch cavity structure has a mounting hole, the universal ball is movably arranged in the mounting hole, the elastic member is arranged in the mounting hole and abuts against the universal ball, and is used to provide an elastic force to drive the universal ball to extend out of the mounting hole; a positioning hole is provided on the sleeve assembly; when the first quick-release structure fixes the sleeve assembly on the clutch cavity structure, one end of the sleeve assembly is sleeved on the outside of one end of the clutch cavity structure, a part of the universal ball extends out of the positioning hole, and is limitedly engaged with the inner wall of the positioning hole; when the sleeve assembly is pulled out, the sleeve assembly squeezes the universal ball, and the universal ball overcomes the elastic force of the elastic member and moves toward the inside of the mounting hole, so that the universal ball is disengaged from the positioning hole, and the sleeve assembly is pulled away from the clutch cavity structure to disconnect the sleeve assembly and the clutch cavity structure; and / or, the second quick-release structure is the same as the first quick-release structure.

[0018] Furthermore, the handle assembly includes a connecting rod and a holding rod, one end of the connecting rod is connected to the holding rod, and the other end is detachably matched with the second quick-release structure; the central axis of the connecting rod is colinear with the central axis of the clutch cavity structure, and the central axis of the connecting rod and the central axis of the holding rod have an angle; the holding rod is used for the staff to hold.

[0019] Furthermore, at least a portion of the connecting rod and / or the holding rod is made of insulating material to block electric current; and / or the handle assembly also includes at least one anti-slip sleeve, which is made of rubber material and is sleeved on the outside of the holding rod for the staff to hold.

[0020] Furthermore, the sleeve assembly also includes an anti-slip part, which is made of elastic material and is detachably arranged at the mating end of the sleeve assembly and the workpiece to be operated. When the sleeve assembly and the workpiece to be operated are mated, the anti-slip part is used to prevent the sleeve assembly and the workpiece to be operated from sliding relative to each other; and / or, the mating end of the sleeve assembly and the workpiece to be operated is made of magnetic material to prevent the sleeve assembly and the workpiece to be operated from sliding relative to each other when the sleeve assembly and the workpiece to be operated are mated with each other and are made of metal material.

[0021] Applying the technical scheme of the present invention, the present invention provides a one-way safety wrench, comprising: a handle assembly, a sleeve assembly and a one-way clutch assembly; the one-way clutch assembly comprises a clutch cavity structure, a first quick-release structure, a clutch plate structure, an ejection spring, a transmission shaft and a second quick-release structure, the first quick-release structure being arranged at one end of the clutch cavity structure for detachably cooperating with the sleeve assembly; the clutch cavity structure has a protective cavity inside, the clutch plate structure is rotatably arranged in the protective cavity, the clutch plate structure has a first ratchet tooth, the clutch cavity structure has a second ratchet tooth inside, the first ratchet tooth cooperates with the second ratchet tooth, when the clutch plate structure rotates in a driving direction, the first ratchet tooth meshes with the second ratchet tooth, so that the clutch plate structure drives the clutch cavity structure to rotate in the driving direction; when the clutch cavity structure or the clutch plate structure rotates in a direction opposite to the driving direction, the first ratchet tooth slides relative to the second ratchet tooth, so that torque cannot be transmitted between the clutch cavity structure and the clutch plate structure; the clutch plate structure also has a matching hole; The two ends of the transmission shaft are respectively a driving end and a connecting end. The driving end can be movably arranged in the matching hole of the clutch cavity structure along the axial direction of the clutch cavity structure and abut against the ejection spring; the ejection spring is arranged in the protective cavity and abuts against the transmission shaft, and is used to provide an elastic force for driving the transmission shaft away from the clutch plate structure; the second quick-release structure is arranged on the connecting end, and is used to detachably cooperate with the handle assembly; wherein, the ejection spring is used to drive the driving end of the transmission shaft to disengage from the matching hole; the sleeve assembly is used to cooperate with the workpiece to be operated, and the handle assembly is used for holding by the staff. By pushing the handle assembly to move along the axial direction of the clutch cavity structure, the driving end is driven to overcome the elastic force of the ejection spring to move, so that at least a part of the driving end is inserted into the matching hole, and the driving end is limitedly cooperated with the inner wall of the matching hole, and the handle assembly is rotated along the driving direction. The handle assembly drives the clutch plate structure to rotate along the driving direction through the transmission shaft, and the clutch plate structure drives the clutch cavity structure and the sleeve assembly to rotate along the driving direction to twist the workpiece to be operated.

[0022] The present invention realizes the one-way driving of the workpiece to be operated in the driving direction in a one-way manner by arranging a handle assembly, a sleeve assembly and a one-way clutch assembly to cooperate with each other, and effectively utilizes the cooperation principle of the first ratchet and the second ratchet, and structurally realizes the one-way driving of the workpiece to be operated in the driving direction, and when the workpiece to be operated rotates in the direction opposite to the driving direction, the rotational torque cannot be transmitted between the clutch cavity structure and the clutch plate structure, thereby avoiding the workpiece to be operated from reversing and driving the wrench to injure the staff. When the one-way safety wrench proposed by the present invention is actually used to operate the electrical switch cabinet, the present invention structurally realizes active protection for the staff, and can provide sufficient protection for the operator when the switch cabinet suddenly receives a call. Once the live component in the switch cabinet is accidentally activated, the one-way safety wrench proposed by the present invention will not rotate accordingly, thereby avoiding the reaction force when the power is suddenly turned on to be transmitted to the hands of the staff, thereby effectively protecting the operator; the present invention provides an ejection spring to provide an elastic force to drive the transmission shaft away from the clutch plate structure, and effectively drives the driving end of the transmission shaft away from the clutch plate structure when the staff does not operate the handle assembly. The one-way safety wrench of the present invention can be used for a variety of equipment, especially for the diversified lock hole structures and sizes of electrical cabinets and switch cabinets, effectively reducing the operating burden and improving work efficiency. The present invention has a simple structure and low cost, is easy to assemble and subsequently maintain, has good durability and long service life, is especially suitable for high-intensity power grid inspection environments, and is suitable for large-scale promotion and use. It is found in actual use that the one-way safety wrench of the present invention works stably and can be loosened quickly when encountering emergencies, and can be effectively fixed inside the lock hole of the workpiece to be operated, thereby avoiding exposure of staff to potential risks during work. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0024] Figure 1 An exploded view of the external structure of a one-way safety wrench provided by an embodiment of the present invention is shown;

[0025] Figure 2 A specific structural schematic diagram of a one-way clutch assembly provided by an embodiment of the present invention is shown;

[0026] Figure 3 A schematic diagram showing the internal structure of a one-way clutch assembly provided by an embodiment of the present invention is shown;

[0027] Figure 4 A partial structural schematic diagram of a sleeve assembly provided by an embodiment of the present invention is shown;

[0028] Figure 5 A schematic diagram of the external structure of the one-way safety wrench provided by an embodiment of the present invention at another angle is shown.

[0029] The above drawings include the following reference numerals:

[0030] 10. Handle assembly; 11. Connecting rod; 12. Grip rod;

[0031] 20. Sleeve assembly; 21. Internal tooth type joint; 22. Internal hexagonal joint; 23. Plum blossom type joint;

[0032] 30. One-way clutch assembly; 31. Clutch cavity structure; 311. Second ratchet; 312. Clutch cavity; 313. External bolt; 314. Cavity cover; 315. Bushing; 316. Through hole; 32. First quick-release structure; 321. Universal ball; 33. Clutch plate structure; 331. First ratchet; 332. Internal bolt; 333. Clutch plate; 34. Ejection spring; 35. Transmission shaft; 36. Second quick-release structure; 37. Protection cavity. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figures 1 to 5As shown, an embodiment of the present invention provides a one-way safety wrench, including: a handle assembly 10, a sleeve assembly 20 and a one-way clutch assembly 30; the one-way clutch assembly 30 includes a clutch cavity structure 31, a first quick-release structure 32, a clutch plate structure 33, an ejection spring 34, a transmission shaft 35 and a second quick-release structure 36, the first quick-release structure 32 is arranged at one end of the clutch cavity structure 31, and is used for detachable cooperation with the sleeve assembly 20; the clutch cavity structure 31 has a protective cavity 37 inside, and the clutch plate structure 33 is rotatably arranged in the protective cavity 37, and the clutch plate structure 33 is on the The clutch cavity structure 31 has a first ratchet tooth 331, and the interior of the clutch cavity structure 31 has a second ratchet tooth 311. The first ratchet tooth 331 cooperates with the second ratchet tooth 311. When the clutch plate structure 33 rotates in the driving direction, the first ratchet tooth 331 meshes with the second ratchet tooth 311, so that the clutch plate structure 33 drives the clutch cavity structure 31 to rotate in the driving direction; when the clutch cavity structure 31 or the clutch plate structure 33 rotates in the direction opposite to the driving direction, the first ratchet tooth 331 slides relative to the second ratchet tooth 311, so that the torque cannot be transmitted between the clutch cavity structure 31 and the clutch plate structure 33; the clutch plate The structure 33 also has a matching hole; the two ends of the transmission shaft 35 are respectively a driving end and a connecting end, and the driving end can be movably arranged in the matching hole of the clutch cavity structure 31 along the axial direction of the clutch cavity structure 31, and abuts against the ejection spring 34; the ejection spring 34 is arranged in the protection cavity 37 and abuts against the transmission shaft 35, and is used to provide an elastic force to drive the transmission shaft 35 away from the clutch plate structure 33; the second quick-release structure 36 is arranged on the connecting end, and is used to be detachably matched with the handle assembly 10; wherein the ejection spring 34 is used to drive the driving end of the transmission shaft 35 to disengage from the matching hole; the sleeve The assembly 20 is used to cooperate with the workpiece to be operated, and the handle assembly 10 is used for holding by the staff. By pushing the handle assembly 10 to move axially along the clutch cavity structure 31, the driving end is driven to overcome the elastic force of the ejection spring 34 to allow at least a portion of the driving end to be inserted into the matching hole. The driving end is limitedly matched with the inner wall of the matching hole, and the handle assembly 10 is rotated along the driving direction. The handle assembly 10 drives the clutch plate structure 33 to rotate along the driving direction through the transmission shaft 35. The clutch plate structure 33 drives the clutch cavity structure 31 and the sleeve assembly 20 to rotate along the driving direction to twist the workpiece to be operated.

[0035] The present invention sets the handle assembly 10, the sleeve assembly 20 and the one-way clutch assembly 30 to work together, and effectively utilizes the cooperation principle of the first ratchet 331 and the second ratchet 311, so that the workpiece to be operated is driven one-way along the driving direction in structure, and when the workpiece to be operated rotates in the direction opposite to the driving direction, the clutch cavity structure 31 and the clutch plate structure 33 cannot transmit the torque, thereby avoiding the workpiece to be operated from driving the wrench to injure the staff when the reverse rotation, when the one-way safety wrench proposed by the present invention is actually used to operate the electrical switch cabinet, the present invention structurally realizes active protection for the staff, and can provide sufficient protection for the operator when the switch cabinet suddenly receives a call, once the live component in the switch cabinet is accidentally activated, the one-way safety wrench proposed by the present invention will not rotate therewith, thereby avoiding the reaction force when the power is suddenly turned on to be transmitted to the hands of the staff, thereby effectively protecting the operator; the present invention sets the ejection spring 34 to provide the elastic force to drive the transmission shaft 35 away from the clutch plate structure 33, and when the staff does not operate the handle assembly 10, the transmission shaft 35 is effectively driven The driving end disengages from the matching hole, thereby realizing effective disengagement of the handle assembly 10 from the clutch cavity structure 31, so that even when the clutch cavity structure 31 drives the clutch plate structure 33 to rotate in the opposite direction to the driving direction, the handle assembly 10 will not rotate therewith, further ensuring the safety of the staff's operation; by setting the first quick-release structure 32 to be detachably matched with the sleeve assembly 20, the sleeve assembly 20 can be quickly replaced, thereby ensuring that the one-way safety wrench proposed in the present invention can be used for a variety of equipment, especially can adapt to the lock hole structure and size diversity of electrical cabinets and switch cabinets, effectively reducing the operating burden and improving work efficiency; the present invention has a simple structure and low cost, is easy to assemble and subsequently maintain, has good durability and long service life, is particularly suitable for high-intensity power grid inspection environments, and is suitable for large-scale promotion and use. It is found in actual use that the one-way safety wrench proposed in the present invention works stably and can be quickly loosened when encountering emergencies, and can be effectively fixed inside the lock hole of the workpiece to be operated, avoiding exposure of staff to potential risks during work.

[0036] like Figure 2 and Figure 3 As shown, the clutch plate structure 33 includes a built-in bolt 332 and a clutch plate 333, the clutch plate 333 has a first ratchet 331, the clutch plate 333 is rotatably sleeved on the outer periphery of the built-in bolt 332, and is limitedly matched with the outer periphery of the built-in bolt 332; the built-in bolt 332 is fixedly arranged in the protective cavity 37; wherein, the end of the built-in bolt 332 away from the clutch cavity structure 31 has a limiting portion, and the limiting portion is used to stop the clutch plate 333 to prevent the clutch plate 333 from detaching from the end of the built-in bolt 332 away from the clutch cavity structure 31.

[0037] The above technical solution refines the clutch plate structure 33, and ensures the stable rotation and limiting of the clutch plate 333 through the built-in bolt 332 to prevent it from detaching during use; the matching design of the built-in bolt 332 and the clutch plate 333 ensures the stability and durability of the clutch plate structure 33, reduces the safety hazards caused by loose or damaged components, and effectively extends the service life of the one-way safety wrench.

[0038] like Figure 2 and Figure 3 As shown, the clutch cavity structure 31 includes a clutch cavity 312, an external bolt 313, a cavity cover 314 and a sleeve 315; the cavity cover 314 is detachably fixed to the clutch cavity 312 by the external bolt 313; the interior of the cavity cover 314 and the interior of the sleeve 315 are both connected to the interior of the clutch cavity 312 to jointly form a protective cavity 37; the cavity cover 314 has a through hole 316 at one end away from the clutch cavity 312, and the through hole 316 is connected to the protective cavity 37, at least a portion of the sleeve 315 passes through the through hole 316 and is limitedly engaged with the inner wall of the through hole 316; the sleeve 315 is detachably fixed on the cavity cover 314, and the driving end is movably arranged on the sleeve 315 along the axial direction of the clutch cavity 312, and the ejection spring 34 is limitedly engaged with the inner wall of the protective cavity 37.

[0039] The detachable cavity cover 314 and the shaft sleeve 315 are designed to facilitate maintenance and component replacement, thereby improving the maintenance efficiency of the equipment; the overall detachable design of the clutch cavity structure 31 simplifies maintenance and inspection, and the limiting fit of the shaft sleeve 315 ensures smooth and precise movement at the drive end, thereby achieving efficient torque transmission; the detachable fixing method of the cavity cover 314 and the shaft sleeve 315 facilitates rapid replacement of corresponding components in the event of wear or failure, thereby reducing maintenance time and improving the overall maintainability and economy of the wrench.

[0040] Specifically, the shaft sleeve 315 is made of self-lubricating material to lubricate the relative sliding between the driving end and the shaft sleeve 315 ; at least a portion of the ejection spring 34 is located in the shaft sleeve 315 .

[0041] By using the sleeve 315 made of self-lubricating material, the friction between the drive end and the sleeve 315 is reduced, and the efficiency of torque transmission is improved; the use of self-lubricating material reduces maintenance costs, reduces wear caused by friction, ensures long-term smooth sliding between the drive shaft 35 and the sleeve 315, and enhances the operating smoothness and service life of the wrench.

[0042] It should be noted that the self-lubricating material in the present invention refers to a material that can form a lubricating layer on the contact surface without adding additional lubricants during the working process, thereby reducing friction and wear. This type of material is particularly suitable for use in environments where it is difficult to use traditional lubricants (such as oils and greases) or where there are special restrictions on lubricants (such as high or low temperatures).

[0043] In a specific embodiment of the present invention, the sleeve 315 can adopt the following self-lubricating materials: 1. Graphite copper composite material; Graphite copper is a composite material in which graphite particles are embedded in a copper matrix. Graphite has a low friction coefficient and good self-lubricating properties, while copper provides the strength and thermal conductivity of the material. 2. Other metal-based self-lubricating materials; In addition to the above-mentioned graphite copper composite material, there are other metal-based composite materials, such as adding self-lubricating elements such as lead, tin, and silver to steel or copper; these materials form a lubricating film on the friction surface through self-lubricating elements to reduce friction and wear, and are suitable for high-load and high-stress mechanical parts; The selection of the above-mentioned self-lubricating materials is usually based on specific application scenarios, including load conditions, temperature range, chemical environment, and cost factors; When designing mechanical parts, the reasonable selection of self-lubricating materials can significantly increase the life of the parts, reduce maintenance frequency, and improve the reliability and efficiency of the equipment.

[0044] Optionally, the sleeve 315 is made of a graphite-copper composite material.

[0045] The graphite-copper composite material combines the self-lubrication of graphite and the mechanical strength of copper, providing a better material choice for the sleeve 315; the use of the graphite-copper composite material further enhances the self-lubrication effect of the sleeve, while the strength of copper ensures that the sleeve 315 is not easily deformed or damaged when subjected to high torque, thereby improving the reliability and durability of the wrench.

[0046] like Figure 4 As shown, the sleeve assembly 20 includes at least one of an internal tooth type joint 21, an internal hexagonal joint 22 and a plum blossom type joint 23 to correspond to at least one of a protrusion with external teeth, an external hexagonal protrusion and a plum blossom type inner hole on the workpiece to be operated.

[0047] By providing the sleeve assembly 20 with a variety of connector forms to accommodate workpieces of different shapes and sizes, the versatility and flexibility of the wrench are significantly improved. The operator does not need to carry a variety of tools, but only needs to carry a variety of relatively light connectors to deal with different workpieces, which simplifies the operating process and improves work efficiency.

[0048] like Figure 1 , Figure 3 and Figure 5As shown, the first quick-release structure 32 includes a universal ball 321 and an elastic member. One end of the clutch cavity structure 31 has a mounting hole. The universal ball 321 is movably arranged in the mounting hole. The elastic member is arranged in the mounting hole and abuts against the universal ball 321 to provide elastic force to drive the universal ball 321 to extend out of the mounting hole. The sleeve assembly 20 has a positioning hole. When the first quick-release structure 32 fixes the sleeve assembly 20 on the clutch cavity structure 31, one end of the sleeve assembly 20 is sleeved on the clutch cavity structure 31. On the outside of the end, a part of the universal ball 321 extends out from the positioning hole and is limitedly engaged with the inner wall of the positioning hole; when the sleeve assembly 20 is pulled out, the sleeve assembly 20 squeezes the universal ball 321, and the universal ball 321 overcomes the elastic force of the elastic member and moves toward the inside of the mounting hole, so that the universal ball 321 is disengaged from the positioning hole, and the sleeve assembly 20 is pulled away from the clutch cavity structure 31 to disconnect the sleeve assembly 20 and the clutch cavity structure 31; and / or, the second quick-release structure 36 is the same as the first quick-release structure 32.

[0049] By providing the first quick-release structure 32 including the universal ball 321 and the elastic member, the sleeve assembly 20 and the clutch cavity structure 31 can be quickly fixed and released, the replacement process is simplified, and the structure of the first quick-release structure 32 is simplified; the design of the first quick-release structure 32 greatly facilitates the replacement of the sleeve assembly 20 and improves the working efficiency; the cooperation between the universal ball 321 and the elastic member ensures the fastening of the sleeve assembly without external force, and when replacement is required, quick disassembly and assembly can be achieved through simple operation, reducing the interruption time of operation.

[0050] like Figure 1 and Figure 5 As shown, the handle assembly 10 includes a connecting rod 11 and a gripping rod 12, one end of the connecting rod 11 is connected to the gripping rod 12, and the other end is detachably matched with the second quick-release structure 36; the central axis of the connecting rod 11 is colinear with the central axis of the clutch cavity structure 31, and the central axis of the connecting rod 11 and the central axis of the gripping rod 12 have an angle; the gripping rod 12 is used for the staff to hold.

[0051] This arrangement fully considers the comfort and safety of the operator, and improves the flexibility of maintenance through the detachable connection with the transmission shaft; the ergonomic design of the handle assembly 10 improves the operating comfort, and the angle design between the axis of the connecting rod 11 and the gripping rod 12 ensures a natural posture during operation and reduces the fatigue of the operator. The detachable cooperation between the connecting rod 11 and the second quick-release structure 36 improves the convenience of maintenance and replacement.

[0052] Specifically, at least a portion of the connecting rod 11 and / or the holding rod 12 is made of insulating material to block electric current; and / or the handle assembly 10 also includes at least one anti-slip sleeve, which is made of rubber material and is sleeved on the outside of the holding rod 12 for the staff to hold.

[0053] By setting part of the handle assembly 10 to use insulating material to block the current, the operator is protected from electric shock. In the operation of electrical equipment, the use of insulating material ensures the electrical safety of the operator, especially when operating in an energized environment, effectively preventing the current from being transmitted to the operator's hands through the tool, thereby reducing the risk of electric shock.

[0054] Optionally, the sleeve assembly 20 also includes an anti-slip part, which is made of elastic material and is detachably arranged at the mating end of the sleeve assembly 20 and the workpiece to be operated. When the sleeve assembly 20 is mated with the workpiece to be operated, the anti-slip part is used to prevent the sleeve assembly 20 and the workpiece to be operated from sliding relative to each other; and / or, the mating end of the sleeve assembly 20 and the workpiece to be operated is made of magnetic material to prevent the sleeve assembly 20 and the workpiece to be operated from sliding relative to each other when the sleeve assembly 20 is mated with the workpiece to be operated which is made of metal material.

[0055] The use of anti-slip parts and magnetic materials improves the combination stability between the sleeve assembly 20 and the workpiece to be operated, avoiding slipping or falling off under high-torque operations; the setting of the anti-slip parts enhances the friction between the sleeve assembly and the workpiece, ensuring the stability of torque transmission under high loads; the application of magnetic materials provides additional adsorption force when combined with metal workpieces to prevent the sleeve assembly from accidentally slipping, which is particularly suitable for high-precision and high-torque operating environments, significantly improving the safety and reliability of operations.

[0056] Now, the test experiment of a specific embodiment of the present invention is described in detail as follows:

[0057] Experimental verification shows that the one-way safety wrench proposed in the present invention has achieved the expected effects in terms of safety protection, multi-functional adaptation, durability and ease of operation, and can provide comprehensive safety protection and efficient support for the operation and maintenance of electrical cabinets;

[0058] 1. Safety test: In an experiment simulating an unexpected call, the clutch performance of the one-way safety wrench proposed in the present invention was tested. The experimental results show that the structural design in which the ejection spring 34 and the first ratchet 331 cooperate with the second ratchet 311 can quickly eject the transmission shaft 35 when an unexpected situation occurs, ensuring that the gripping rod 12 remains stationary, avoiding the reaction force from being transmitted to the hands of the staff, and effectively improving the operational safety;

[0059] 2. Adaptability test: Adaptability tests were conducted on various types of electrical cabinet lock holes (including hexagonal, round tooth, and plum blossom lock holes). The quickly replaceable sleeve assembly 20 of the present invention achieved a stable connection in each type of lock hole without sliding or loosening, verifying the multifunctional adaptability and versatility of the present invention;

[0060] 3. Durability test: Through high-frequency use simulation experiments, the material strength and structural stability of the wrench are verified. The experimental results show that the wrench has no obvious wear or looseness under long-term and high-intensity use. The performance of the structural design in which the ejection spring 34 and the first ratchet 331 and the second ratchet 311 cooperate is stable and has a long service life;

[0061] 4. Operational convenience test: The switching efficiency of multiple lock holes was tested under field conditions. The results showed that the internal tooth connector 21, internal hexagon connector 22 and plum blossom connector 23 that can be quickly replaced significantly shortened the switching time between electrical cabinets of different models, ensuring the efficiency and convenience of operation, and are suitable for a variety of emergency and repair scenarios.

[0062] In summary, the present invention provides a one-way safety wrench. The present invention sets a handle assembly 10, a sleeve assembly 20 and a one-way clutch assembly 30 to work together, and effectively utilizes the cooperation principle of the first ratchet 331 and the second ratchet 311. The structure realizes one-way driving of the workpiece to be operated along the driving direction, and when the workpiece to be operated rotates in the direction opposite to the driving direction, the clutch cavity structure 31 and the clutch plate structure 33 cannot transmit the torque, thereby avoiding the workpiece to be operated from driving the wrench to injure the staff when the reverse rotation is performed. When the one-way safety wrench proposed by the present invention is actually used to operate the electrical switch cabinet, the present invention structurally realizes active protection for the staff, and can provide sufficient protection for the operator when the switch cabinet suddenly receives a call. Once the live component in the switch cabinet is accidentally activated, the one-way safety wrench proposed by the present invention will not rotate accordingly, thereby avoiding the reaction force when the power is suddenly turned on to be transmitted to the hands of the staff, thereby effectively protecting the operator. The present invention sets an ejection spring 34 to provide an elastic force to drive the transmission shaft 35 away from the clutch plate structure 33. When the staff does not operate the handle assembly 10, there is The driving end of the transmission shaft 35 is effectively driven to disengage from the matching hole, thereby realizing the effective disengagement of the handle assembly 10 and the clutch cavity structure 31. In this way, even when the clutch cavity structure 31 drives the clutch plate structure 33 to rotate in the opposite direction to the driving direction, the handle assembly 10 will not rotate therewith, further ensuring the safety of the staff's operation; by setting the first quick-release structure 32 to be detachably matched with the sleeve assembly 20, the sleeve assembly 20 can be quickly replaced, thereby ensuring that the one-way safety wrench proposed by the present invention can be used for a variety of equipment, especially can adapt to the lock hole structure and size diversity of electrical cabinets and switch cabinets, effectively reducing the operating burden and improving work efficiency; the present invention has a simple structure and low cost, is easy to assemble and subsequently maintain, has good durability and long service life, is particularly suitable for high-intensity power grid inspection environments, and is suitable for large-scale promotion and use. It is found in actual use that the one-way safety wrench proposed by the present invention works stably and can be quickly loosened when encountering emergencies, and can be effectively fixed inside the lock hole of the workpiece to be operated, avoiding the staff from being exposed to potential risks during the work process.

[0063] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0064] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0065] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0066] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0067] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A one-way safety wrench, characterized in that: include: A handle assembly (10), a sleeve assembly (20) and a one-way clutch assembly (30); the one-way clutch assembly (30) comprises a clutch cavity structure (31), a first quick-release structure (32), a clutch plate structure (33), an ejection spring (34), a transmission shaft (35) and a second quick-release structure (36); the first quick-release structure (32) is arranged at one end of the clutch cavity structure (31) and is used for detachably cooperating with the sleeve assembly (20); the clutch cavity structure (31) has a protective cavity (37) inside, the clutch plate structure (33) is rotatably arranged in the protective cavity (37), the clutch plate structure (33) has a first ratchet (331), and the clutch cavity The structure (31) has a second ratchet tooth (311) inside, and the first ratchet tooth (331) cooperates with the second ratchet tooth (311). When the clutch plate structure (33) rotates in a driving direction, the first ratchet tooth (331) meshes with the second ratchet tooth (311), so that the clutch plate structure (33) drives the clutch cavity structure (31) to rotate in the driving direction; when the clutch cavity structure (31) or the clutch plate structure (33) rotates in a direction opposite to the driving direction, the first ratchet tooth (331) slides relative to the second ratchet tooth (311), so that torque cannot be transmitted between the clutch cavity structure (31) and the clutch plate structure (33); The clutch plate structure (33) also has a matching hole; the two ends of the transmission shaft (35) are respectively a driving end and a connecting end, and the driving end can be movably arranged in the matching hole of the clutch cavity structure (31) along the axial direction of the clutch cavity structure (31), and abuts against the ejection spring (34); the ejection spring (34) is arranged in the protection cavity (37) and abuts against the transmission shaft (35), and is used to provide an elastic force for driving the transmission shaft (35) away from the clutch plate structure (33); the second quick-release structure (36) is arranged on the connecting end, and is used to be detachably matched with the handle assembly (10); wherein the ejection spring (34) is used to drive the driving end of the transmission shaft (35) to disengage from the matching hole; The sleeve assembly (20) is used to cooperate with the workpiece to be operated, and the handle assembly (10) is used to be held by a staff member. By pushing the handle assembly (10) to move axially along the clutch cavity structure (31), the driving end is driven to overcome the elastic force of the ejection spring (34) to move so that at least a part of the driving end is inserted into the matching hole. The driving end is limitedly matched with the inner wall of the matching hole, and the handle assembly (10) is rotated along the driving direction. The handle assembly (10) drives the clutch plate structure (33) to rotate along the driving direction through the transmission shaft (35). The clutch plate structure (33) drives the clutch cavity structure (31) and the sleeve assembly (20) to rotate along the driving direction to screw the workpiece to be operated.

2. The one-way safety wrench according to claim 1, characterized in that: The clutch plate structure (33) comprises a built-in bolt (332) and a clutch plate (333), wherein the clutch plate (333) is provided with the first ratchet (331), and the clutch plate (333) is rotatably sleeved on the outer periphery of the built-in bolt (332) and is limitedly matched with the outer periphery of the built-in bolt (332); the built-in bolt (332) is fixedly arranged in the protective cavity (37); wherein the end of the built-in bolt (332) away from the clutch cavity structure (31) has a limiting portion, and the limiting portion is used to stop the clutch plate (333) to prevent the clutch plate (333) from detaching from the end of the built-in bolt (332) away from the clutch cavity structure (31).

3. The one-way safety wrench according to claim 1, characterized in that: The clutch cavity structure (31) comprises a clutch cavity (312), an external bolt (313), a cavity cover (314) and a shaft sleeve (315); the cavity cover (314) is detachably fixed to the clutch cavity (312) by means of the external bolt (313); the interior of the cavity cover (314) and the interior of the shaft sleeve (315) are both connected to the interior of the clutch cavity (312) to form the protection cavity (37); the cavity cover (314) is located away from the clutch cavity (312). The end has a through hole (316), the through hole (316) is connected to the protective cavity (37), at least a portion of the shaft sleeve (315) passes through the through hole (316) and is limitedly matched with the inner wall of the through hole (316); the shaft sleeve (315) is detachably fixed on the cavity cover (314), the driving end is movably arranged on the shaft sleeve (315) along the axial direction of the clutch cavity (312), and the ejection spring (34) is limitedly matched with the inner wall of the protective cavity (37).

4. The one-way safety wrench according to claim 3, characterized in that: The shaft sleeve (315) is made of self-lubricating material to lubricate the relative sliding between the driving end and the shaft sleeve (315); at least a portion of the ejection spring (34) is located in the shaft sleeve (315).

5. The one-way safety wrench according to claim 4, characterized in that: The shaft sleeve (315) is made of a graphite-copper composite material.

6. The one-way safety wrench according to claim 1, characterized in that: The sleeve assembly (20) comprises at least one of an internal tooth type joint (21), an internal hexagonal joint (22) and a plum blossom type joint (23) to correspond to at least one of a protrusion with external teeth, an external hexagonal protrusion and a plum blossom type inner hole on the workpiece to be operated.

7. The one-way safety wrench according to claim 1, characterized in that: The first quick-release structure (32) comprises a universal ball (321) and an elastic member; one end of the clutch cavity structure (31) has a mounting hole; the universal ball (321) is movably arranged in the mounting hole; the elastic member is arranged in the mounting hole and abuts against the universal ball (321) to provide an elastic force for driving the universal ball (321) to extend out of the mounting hole; the sleeve assembly (20) has a positioning hole; when the first quick-release structure (32) fixes the sleeve assembly (20) on the clutch cavity structure (31), one end of the sleeve assembly (20) is sleeved on the outer side of one end of the clutch cavity structure (31) , a portion of the universal ball (321) extends out from the positioning hole and is limitedly engaged with the inner wall of the positioning hole; when the sleeve assembly (20) is pulled out, the sleeve assembly (20) squeezes the universal ball (321), and the universal ball (321) overcomes the elastic force of the elastic member and moves toward the inside of the mounting hole, so that the universal ball (321) is disengaged from the positioning hole, and the sleeve assembly (20) is pulled away from the clutch cavity structure (31), so that the sleeve assembly (20) and the clutch cavity structure (31) are disconnected; and / or the second quick-release structure (36) is the same as the first quick-release structure (32).

8. The one-way safety wrench according to claim 1, characterized in that: The handle assembly (10) comprises a connecting rod (11) and a gripping rod (12); one end of the connecting rod (11) is connected to the gripping rod (12), and the other end is detachably matched with the second quick-release structure (36); the central axis of the connecting rod (11) is colinear with the central axis of the clutch cavity structure (31), and the central axis of the connecting rod (11) and the central axis of the gripping rod (12) have an angle; the gripping rod (12) is used for a staff member to grip.

9. The one-way safety wrench according to claim 8, characterized in that: At least a portion of the connecting rod (11) and / or the holding rod (12) is made of insulating material to block electric current; and / or the handle assembly (10) further comprises at least one anti-slip sleeve, which is made of rubber material and is sleeved on the outside of the holding rod (12) for a worker to hold.

10. The one-way safety wrench according to claim 1, characterized in that: The sleeve assembly (20) further comprises an anti-slip member, which is made of elastic material and is detachably arranged at the mating end of the sleeve assembly (20) and the workpiece to be operated. When the sleeve assembly (20) and the workpiece to be operated are mated, the anti-slip member is used to prevent the sleeve assembly (20) and the workpiece to be operated from sliding relative to each other. And / or, the mating ends of the sleeve assembly (20) and the workpiece to be operated are made of magnetic material to prevent the sleeve assembly (20) and the workpiece to be operated from sliding relative to each other when the sleeve assembly (20) and the workpiece to be operated are made of metal material.

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