Crank device for switch cabinet

Abstract

The utility model relates to a crank device for a switch cabinet, and the crank device comprises a mounting seat which is used for being separably mounted on the switch cabinet and is provided with a mounting groove penetrating through the mounting seat; the crank comprises a transmission rod, the transmission rod penetrates through the mounting groove and is used for being in transmission connection with the switch cabinet, and the transmission rod is provided with a limiting part protruding in the radial direction of the transmission rod; the locking structure comprises a driving assembly and a locking block, the locking block penetrates through the mounting base and is slidably mounted on the mounting base in the radial direction of the transmission rod, and the driving assembly is connected to the locking block so as to drive the locking block to selectively extend into the mounting groove; the limiting part is used for limiting the limiting part to move away from the switch cabinet. According to the technical scheme, the crank device for the switch cabinet can save manpower and is good in stability.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electrical operating equipment, and more particularly, to a crank device for a switch cabinet. Background Art

[0002] A handcart-type switch cabinet needs to be operated by a crank. When an operator rotates the crank, pressure needs to be applied to the crank to prevent it from falling off the switch cabinet. This makes the process of rotating the crank laborious and there is a risk of the crank falling off during rotation, posing a safety hazard. Summary of the Utility Model

[0003] The object of the present disclosure is to provide a crank device for a switch cabinet, which can save manpower and has good stability.

[0004] To achieve the above object, the present disclosure provides a crank device for a switch cabinet, the crank device comprising: a mounting base which is detachably mounted on the switch cabinet and has a mounting groove penetrating through the mounting base; a crank including a transmission rod which penetrates through the mounting groove and is used for driving connection with the switch cabinet, the transmission rod having a limiting portion protruding radially along itself; and a locking structure including a driving assembly and a locking block, the locking block penetrates through the mounting base and is slidably mounted on the mounting base along the radial direction of the transmission rod, the driving assembly is connected to the locking block to drive the locking block to selectively extend into the mounting groove for restricting the movement of the limiting portion away from the switch cabinet.

[0005] Optionally, the driving assembly includes a locking ring, a guide groove and a connecting rod, the locking ring is rotatably sleeved on the mounting base, the guide groove is configured as an arc groove and has opposite first and second ends in its extending direction, the distance between the guide groove and the inner side wall of the locking ring gradually increases from the first end to the second end, the connecting rod is slidably mounted in the guide groove, one end of the connecting rod is fixedly connected to the locking block, and the other end penetrates through the guide groove.

[0006] Optionally, the number of the guide grooves, the connecting rods and the locking blocks is equal and they are arranged in one-to-one correspondence, the number of the guide grooves is multiple and the multiple guide grooves are arranged in a circumferential annular array along the locking ring.

[0007] Optionally, the crank device also includes a limit rod and a limit groove, the limit rod is connected to the mounting seat, the number of the limit grooves is two, and the two limit grooves are arranged at intervals along the circumference of the locking ring on the outer wall of the locking ring, and the limit rod is selectively clamped in one of the two limit grooves to limit the rotation of the locking ring so that the locking block is limited to a locked state or an unlocked state. In the locked state, the locking block extends into the mounting groove to limit the movement of the limit part away from the switch cabinet. In the unlocked state, the locking block leaves the mounting groove.

[0008] Optionally, the crank device also includes a mounting frame, one end of the mounting frame is connected to the mounting seat, and the other end extends toward the locking ring and is arranged at an interval with the locking ring. The limit rod is slidably mounted on the mounting frame and connected to the mounting seat through the mounting frame. The limit rod passes through the mounting frame to be clamped in one of the two limit grooves.

[0009] Optionally, an operating block is provided at one end of the limit rod away from the locking ring, and an elastic member is sleeved on the limit rod, and both ends of the elastic member are respectively connected to the operating block and the mounting frame, and the elastic member is used to drive the limit rod to move toward the locking ring.

[0010] Optionally, the mounting groove includes a first groove section and a second groove section connected along the axial direction of the transmission rod, the first groove section and the second groove section are both constructed in a cylindrical shape, the inner diameter of the first groove section is larger than the inner diameter of the second groove section, so as to form a step surface between the first groove section and the second groove section, and the step surface is used to limit the limiting portion.

[0011] Optionally, the mounting base includes a magnetic member, a connecting frame and a mounting tube connected in sequence, the magnetic member is used to be magnetically adsorbed on the switch cabinet, the connecting frame is connected to the magnetic member and the mounting tube, and the mounting tube is formed with the mounting groove.

[0012] Optionally, a first positioning block is provided on a side of the installation tube close to the switch cabinet, the first positioning block is fixedly connected to the installation tube, and the first positioning block is used for being clamped and installed on the switch cabinet.

[0013] Optionally, the crank includes a transmission rod, a connecting rod and a grip rod connected in sequence, the transmission rod, the connecting rod and the grip rod are distributed in a Z shape, and a second positioning block is provided at one end of the transmission rod away from the connecting rod, and the second positioning block is used for being clamped and installed on the switch cabinet.

[0014] Through the above technical solution, in the crank device for the switch cabinet provided by the present disclosure, the mounting seat can be detachably mounted on the switch cabinet, and at the same time, the transmission rod of the crank can pass through the mounting groove of the mounting seat, so that the crank can be detachably mounted on the switch cabinet through the mounting seat, and is transmission-connected with the switch cabinet through the transmission rod, so that the switch cabinet can be operated by turning the crank. In addition, the locking block can be selectively extended into the mounting groove under the drive of the driving component, so that when the locking block is extended into the mounting groove, the locking block can limit the limit portion located in the mounting groove from moving away from the switch cabinet, that is, the setting of the locking block can limit the crank from moving away from the switch cabinet to prevent the crank from detaching from the switch cabinet, so that the crank device has good stability, and when the staff turns the crank, they only need to apply the force to operate the crank to rotate, which can save manpower.

[0015] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0017] Figure 1 is a front view of a crank device for a switch cabinet provided by an embodiment of the present disclosure;

[0018] Figure 2 is a half-section view of a crank device for a switch cabinet provided by an embodiment of the present disclosure;

[0019] Figure 3 It is a partial side view of a crank device for a switch cabinet provided in an embodiment of the present disclosure.

[0020] Description of Reference Numerals

[0021] 100, mounting seat; 110, mounting groove; 111, first groove section; 112, second groove section; 120, magnetic member; 130, connecting frame; 140, mounting tube; 141, first positioning block; 200, crank; 210, transmission rod; 211, limiting portion; 212, second positioning block; 220, connecting rod; 230, gripping rod; 300, locking structure; 310, driving assembly; 311, locking ring; 312, guide groove; 313, connecting rod; 320, locking block; 410, limiting rod; 411, operating block; 420, limiting groove; 430, elastic member; 500, mounting frame; 600, second bearing. DETAILED DESCRIPTION

[0022] The following will describe in detail the specific embodiments of the present disclosure with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for explaining and illustrating the present disclosure, and are not used to limit the present disclosure.

[0023] In the present disclosure, unless otherwise stated, the orientation terms such as "inside" and "outside" refer to "inside" and "outside" relative to the self-profile of the corresponding component. In addition, the terms "first", "second", etc. used in the present disclosure are used to distinguish one element from another, and do not have sequence and importance. Furthermore, in the following description, when referring to the drawings, unless otherwise explained, the same reference numerals in different drawings represent the same or similar elements. The above definitions are only for explaining and illustrating the present disclosure, and should not be construed as a limitation of the present disclosure.

[0024] According to the specific embodiment of the present disclosure, referring to Figures 1 to 3 as shown in, a crank handle device for a switch cabinet is provided. The crank handle device includes: a mounting seat 100, which is used for detachably mounting on the switch cabinet and has a mounting groove 110 penetrating through the mounting seat 100; a crank handle 200, the crank handle 200 includes a transmission rod 210, the transmission rod 210 passes through the mounting groove 110 and is used for driving connection with the switch cabinet, and the transmission rod 210 has a limiting portion 211 protruding radially along its own axis; and a locking structure 300, the locking structure 300 includes a driving assembly 310 and a locking block 320, the locking block 320 passes through the mounting seat 100 and is slidably mounted on the mounting seat 100 along the radial direction of the transmission rod 210, and the driving assembly 310 is connected to the locking block 320 to drive the locking block 320 to selectively extend into the mounting groove 110 for restricting the limiting portion 211 from moving away from the switch cabinet.

[0025] Through the above technical solution, in the crank handle device for a switch cabinet provided by the present disclosure, the mounting seat 100 can be detachably mounted on the switch cabinet. At the same time, the transmission rod 210 of the crank handle 200 can pass through the mounting groove 110 of the mounting seat 100. Therefore, the crank handle 200 can be detachably mounted on the switch cabinet through the mounting seat 100 and is drivingly connected to the switch cabinet through the transmission rod 210. In this way, the switch cabinet can be operated by rotating the crank handle 200. In addition, the locking block 320 can be selectively extended into the mounting groove 110 under the drive of the driving assembly 310. In this way, when the locking block 320 extends into the mounting groove 110, the locking block 320 can restrict the limiting portion 211 located in the mounting groove 110 from moving away from the switch cabinet, that is to say, the setting of the locking block 320 can restrict the crank handle 200 from moving away from the switch cabinet to prevent the crank handle 200 from detaching from the switch cabinet. Therefore, the stability of the crank handle device is good, and when the staff rotates the crank handle 200, only the force required to rotate the crank handle 200 needs to be applied, which can save manpower.

[0026] Among them, it should be noted that "the mounting base 100 is used for detachably mounting on the switch cabinet" means that the mounting base 100 can be mounted on the switch cabinet and can also be removed from the switch cabinet, so as to mount the mounting base 100 on the switch cabinet when the crank 200 needs to be used, which is convenient for disassembly and assembly; in addition, "the locking block 320 can selectively extend into the mounting groove 110 under the drive of the drive assembly 310" means that when the limiting portion 211 needs to be locked, the drive assembly 310 can drive the locking block 320 to extend into the mounting groove 110 to block the limiting portion 211, and when the limiting portion 211 does not need to be locked, the drive assembly 310 can drive the locking block 320 to leave the mounting groove 110 to ensure that the limiting portion 211 (or the crank 200) can be withdrawn from the mounting groove 110.

[0027] In the crank device provided by the present disclosure, the drive assembly 310 can be constructed in any suitable manner. As an exemplary embodiment, referring to Figures 1 to 3 shown in, the drive assembly 310 can include a locking ring 311, a guide groove 312 and a connecting rod 313. The locking ring 311 can be rotatably sleeved on the mounting base 100. The guide groove 312 can be configured as an arc groove and the guide groove 312 has opposite first and second ends in its extending direction. The distance between the guide groove 312 and the inner side wall of the locking ring 311 can gradually increase from the first end to the second end. The connecting rod 313 can be slidably mounted in the guide groove 312. One end of the connecting rod 313 can be fixedly connected to the locking block 320, and the other end can pass through the guide groove 312. In this way, during the rotation of the locking ring 311 relative to the mounting base 100, the connecting rod 313 can slide relative to the guide groove 312 to drive the locking block 320 to move relative to the transmission rod 210 along the radial direction of the transmission rod 210. It should be noted that when the connecting rod 313 is located at the first end, the locking block 320 partially extends into the mounting groove 110, and when the connecting rod 313 is located at the second end, referring to Figure 3 , the locking block 320 completely leaves the mounting groove 110. In addition, a block protruding radially along its own direction can be provided at the end of the connecting rod 313 away from the locking block 320 to prevent the connecting rod 313 from disengaging from the guide groove 312. In this way, the reliability of the drive assembly 310 can be improved.

[0028] Among them, the locking ring 311 can be mounted on the mounting base 100 in any suitable manner. As an exemplary embodiment, the locking ring 311 can be rotatably sleeved on the outer wall surface of the mounting base 100 through a first bearing. In another exemplary embodiment, a chute recessed towards its own interior can be provided on one of the locking ring 311 and the mounting base 100, and a slider can be provided on the other. The slider can extend into the chute and be slidably mounted in the chute. In other embodiments, the locking ring 311 can also be mounted on the mounting base 100 in other suitable ways, and the present disclosure does not make specific limitations on this.

[0029] In the crank handle device provided by the present disclosure, the guide groove 312 can be constructed in any suitable manner. As an exemplary embodiment, referring to Figures 1 to 3 as shown in, the number of the guide grooves 312, the link rods 313, and the locking blocks 320 can be equal and arranged in one-to-one correspondence. The number of the guide grooves 312 can be multiple, and the multiple guide grooves 312 are arranged in an annular array along the circumferential direction of the locking ring 311. In this way, the multiple link rods 313 and the multiple locking blocks 320 can also be arranged in an annular array along the circumferential direction of the locking ring 311. That is to say, the multiple locking blocks 320 can be arranged in an annular array along the circumferential direction of the limiting portion 211 to ensure that the multiple locking blocks 320 can extend into the installation groove 110 to block the circumference of the limiting portion 211. In this way, during the process of rotating the crank handle 200, the phenomenon that the crank handle 200 shakes due to uneven force on the limiting portion 211 can be avoided.

[0030] In the crank handle device provided by the present disclosure, in order to further improve the reliability of the crank handle device, as an exemplary embodiment, referring to Figure 1 as shown in, the crank handle device can further include a limiting rod 410 and a limiting groove 420. The limiting rod 410 can be connected to the mounting seat 100. The number of the limiting grooves 420 can be two, and the two limiting grooves 420 are arranged at intervals along the circumferential direction of the locking ring 311 on the outer side wall of the locking ring 311. The limiting rod 410 can be selectively clamped in one of the two limiting grooves 420 to limit the rotation of the locking ring 311 so that the locking block 320 is limited in the locked state or the unlocked state. In the locked state, the locking block 320 can extend into the installation groove 110 to be used for restricting the limiting portion 211 from moving away from the switch cabinet. In the unlocked state, the locking block 320 can leave the installation groove 110.

[0031] In this way, when the limiting rod 410 is clamped in the limiting groove 420, relative static can be maintained between the locking ring 311 and the mounting seat 100. Therefore, relative static can also be maintained between the locking block 320 and the limiting portion 211. Specifically, when the limiting rod 410 is clamped in one of the limiting grooves 420, the locking block 320 can be limited in the locked state. That is to say, the locking block 320 can extend into the installation groove 110 and be static relative to the limiting portion 211. In this way, the locking block 320 can stably restrict the limiting portion 211 from disengaging from the installation groove 110. When the limiting rod 410 is clamped in the other limiting groove 420, the locking block 320 can leave the installation groove 110 and be static relative to the limiting portion 211. In this way, it can be avoided that the locking block 320 hinders the disassembly and assembly between the transmission rod 210 and the installation groove 110.

[0032] Among them, there is a first included angle between the connecting lines of the centers of the two limiting slots 420 and the locking ring 311, and there is a second included angle between the connecting line of the first end and the center of the locking ring 311 and the connecting line of the second end and the center of the locking ring 311. The first included angle can be less than or equal to the second included angle. As an exemplary embodiment, the first included angle can be equal to the second included angle. In this way, when the limiting rod 410 is respectively clamped in the two limiting slots 420, the connecting rod 313 can be located at the first end or the second end.

[0033] In the crank handle device provided by the present disclosure, the limiting rod 410 can be connected to the mounting base 100 in any suitable manner. As an exemplary embodiment, referring to Figure 1 as shown in, the crank handle device can further include a mounting bracket 500. One end of the mounting bracket 500 can be connected to the mounting base 100, and the other end can extend toward the locking ring 311 and be arranged at an interval from the locking ring 311. The limiting rod 410 can be slidably mounted on the mounting bracket 500 and connected to the mounting base 100 through the mounting bracket 500. The limiting rod 410 can pass through the mounting bracket 500 to be clamped in one of the two limiting slots 420. In this way, the limiting rod 410 can be arranged outside the locking ring 311 through the mounting bracket 500, so as to facilitate the clamping of the limiting rod 410 in the limiting slot 420.

[0034] In the crank handle device provided by the present disclosure, in order to further improve the reliability of the limiting rod 410, as an exemplary embodiment, referring to Figure 1 as shown in, an operating block 411 can be provided at one end of the limiting rod 410 away from the locking ring 311. An elastic member 430 can be sleeved on the limiting rod 410. Two ends of the elastic member 430 can be respectively connected to the operating block 411 and the mounting bracket 500. The elastic member 430 can be used to drive the limiting rod 410 to move toward the locking ring 311. In this way, the staff can drive the limiting rod 410 to move away from the locking ring 311 through the operating block 411, so as to facilitate the rotation of the locking ring 311. After the locking ring 311 rotates in place, the elastic member 430 can drive the limiting rod 410 to move toward the locking ring 311, so that the limiting rod 410 is clamped in the limiting slot 420. In addition, after the limiting rod 410 is clamped in the limiting slot 420, the elastic force of the elastic member 430 can also ensure that the limiting rod 410 is tightly clamped in the limiting slot 420, so as to ensure the reliability of the limiting rod 410 and further ensure the reliability of the crank handle device.

[0035] In the crank handle device provided by the present disclosure, the mounting groove 110 can be constructed in any suitable manner. As an exemplary embodiment, referring to Figure 3As shown, the installation groove 110 may include a first groove section 111 and a second groove section 112 that communicate with each other along the axial direction of the transmission rod 210. Both the first groove section 111 and the second groove section 112 may be configured as cylindrical. The inner diameter of the first groove section 111 may be larger than the inner diameter of the second groove section 112, so as to form a stepped surface between the first groove section 111 and the second groove section 112. The stepped surface may be used to limit the limiting portion 211. Among them, the first groove section 111 is arranged on the side of the second groove section 112 away from the switch cabinet. In this way, during the installation process of the crank 200, the stepped surface can limit the limiting portion 211 to restrict the transmission rod 210 from continuing to move towards the switch cabinet. Therefore, the setting of the stepped surface can remind the staff that the crank 200 has been installed in place, preventing the staff from operating improperly and damaging the switch cabinet.

[0036] Among them, the distance from the stepped surface along the axial direction of the transmission rod 210 to the locking block 320 is equal to or slightly larger than the dimension of the limiting portion 211 along the axial direction of the transmission rod 210. In this way, the transmission rod 210 can be prevented from shaking in the installation groove 110. In addition, a second bearing 600 may be provided between the transmission rod 210 and the second groove section 112, or lubricating oil may be coated instead of providing the second bearing 600 to reduce the wear between the transmission rod 210 and the installation groove 110.

[0037] In the crank device provided by the present disclosure, as an exemplary embodiment, refer to Figure 1 and Figure 2 As shown, the mounting base 100 may include a magnetic member 120, a connecting frame 130, and a mounting cylinder 140 that are connected in sequence. The magnetic member 120 may be used to magnetically adsorb to the switch cabinet. The connecting frame 130 may be connected between the magnetic member 120 and the mounting cylinder 140. An installation groove 110 may be formed on the mounting cylinder 140. In this way, the mounting cylinder 140 can be stably installed on the switch cabinet through the magnetic member 120.

[0038] In the crank device provided by the present disclosure, as an exemplary embodiment, refer to Figure 3 As shown, a first positioning block 141 may be provided on the side of the mounting cylinder 140 close to the switch cabinet. The first positioning block 141 may be fixedly connected to the mounting cylinder 140. The first positioning block 141 may be used for snap-fitting and installing on the switch cabinet. In this way, the installation position of the mounting cylinder 140 can be ensured, and further the reliability of the transmission connection between the crank 200 and the switch cabinet can be ensured.

[0039] In the crank device provided by the present disclosure, the crank 200 may be constructed in any suitable manner. As an exemplary embodiment, refer to Figure 3As shown in the figure, the crank handle 200 may include a transmission rod 210, a connecting rod 220, and a grip rod 230 that are connected in sequence. The transmission rod 210, the connecting rod 220, and the grip rod 230 may be distributed in a Z shape. A second positioning block 212 may be provided at one end of the transmission rod 210 away from the connecting rod 220. The second positioning block 212 may be used for clamping and installing on the switch cabinet. In this way, the staff only needs to rotate the grip rod 230. The design of the second positioning block 212 can ensure the reliability of the transmission connection between the crank handle 200 and the switch cabinet.

[0040] Among them, in an exemplary embodiment, the second positioning block 212 may be configured as a plane recessed inward from the side surface of the transmission rod 210 to prevent movement interference between the second positioning block 212 and the installation groove 110. In another exemplary embodiment, the second positioning block 212 may be configured as a block protruding outward from the side surface of the transmission rod 210. At the same time, an avoidance groove extending along its own axial direction is also provided on the inner wall surface of the installation groove 110 to ensure that the transmission rod 210 can extend into the installation groove 110. In other embodiments, the second positioning block 212 and the installation groove 110 may also be configured in other suitable ways, and the present disclosure does not make specific limitations on this.

[0041] During the use of the crank handle device provided by the present disclosure, the staff first visually observes the position of the first positioning block 141 relative to the switch cabinet, then installs the mounting seat 100 on the switch cabinet, and then installs the transmission rod 210 of the crank handle 200 in the installation groove 110. After the crank handle 200 is installed, the staff needs to pull out the limit rod 410. At the same time, rotate the locking ring 311 until the connecting rod 313 is located at the first end, then release the limit rod 410 and rotate the crank handle 200.

[0042] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0043] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present disclosure does not separately describe various possible combination methods.

[0044] In addition, any combination can be made between various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A crank device for a switch cabinet, characterized in that The crank device comprises: A mounting seat, the mounting seat is used to be detachably mounted on the switch cabinet and has a mounting groove running through the mounting seat; A crank, wherein the crank comprises a transmission rod, the transmission rod passes through the mounting slot and is used for transmission connection with the switch cabinet, and the transmission rod has a limiting portion protruding along its radial direction; and The locking structure includes a driving assembly and a locking block, wherein the locking block passes through the mounting seat and is radially slidably installed on the mounting seat along the transmission rod, and the driving assembly is connected to the locking block to drive the locking block to selectively extend into the mounting groove to limit the movement of the limiting portion away from the switch cabinet.

2. The crank device for switchgear according to claim 1, characterized in that, The driving assembly includes a locking ring, a guide groove and a connecting rod. The locking ring is rotatably sleeved on the mounting seat. The guide groove is constructed as an arcuate groove and has a first end and a second end opposite to each other in its extension direction. The distance between the guide groove and the inner side wall of the locking ring gradually increases from the first end toward the second end. The connecting rod is slidably installed in the guide groove. One end of the connecting rod is fixed to the locking block, and the other end passes through the guide groove.

3. The crank device for a switch cabinet according to claim 2, characterized in that, The number of the guide grooves, the connecting rods and the locking blocks are equal and arranged in one-to-one correspondence. The number of the guide grooves is multiple and the multiple guide grooves are arranged in a ring array along the circumference of the locking ring.

4. The crank handle device for switchgear according to claim 3, characterized in that, The crank device further includes a limiting rod and a limiting groove, wherein the limiting rod is connected to the mounting seat, the limiting grooves are two in number, and the two limiting grooves are arranged at intervals along the circumference of the locking ring on the outer side wall of the locking ring, and the limiting rod is selectively clamped in one of the two limiting grooves to limit the locking block to a locked state or an unlocked state by limiting the rotation of the locking ring. In the locked state, the locking block extends into the mounting groove to limit the movement of the limiting portion away from the switch cabinet. In the unlocked state, the locking block leaves the mounting groove.

5. The crank handle device for switchgear according to claim 4, characterized in that, The crank device also includes a mounting frame, one end of which is connected to the mounting seat, and the other end of which extends toward the locking ring and is spaced apart from the locking ring. The limit rod is slidably mounted on the mounting frame and connected to the mounting seat via the mounting frame. The limit rod passes through the mounting frame to be clamped in one of the two limit grooves.

6. The crank handle device for a switch cabinet according to claim 5, characterized in that, An operating block is provided at one end of the limit rod away from the locking ring, and an elastic member is sleeved on the limit rod. Both ends of the elastic member are respectively connected to the operating block and the mounting frame, and the elastic member is used to drive the limit rod to move toward the locking ring.

7. The crank handle device for switchgear according to claim 1, characterized in that, The mounting groove includes a first groove section and a second groove section connected along the axial direction of the transmission rod, the first groove section and the second groove section are both constructed in a cylindrical shape, the inner diameter of the first groove section is larger than the inner diameter of the second groove section, so that a step surface is formed between the first groove section and the second groove section, and the step surface is used to limit the limiting portion.

8. The crank handle device for a switch cabinet according to claim 1, characterized in that, The mounting seat includes a magnetic member, a connecting frame and a mounting tube which are connected in sequence. The magnetic member is used for magnetic adsorption on the switch cabinet. The connecting frame is connected to the magnetic member and the mounting tube. The mounting tube is formed with the mounting groove.

9. The crank handle device for switchgear according to claim 8, characterized in that, A first positioning block is provided on one side of the installation tube close to the switch cabinet. The first positioning block is fixed to the installation tube and is used for being clamped and installed on the switch cabinet.

10. The crank handle device for a switch cabinet according to claim 1, characterized in that, The crank includes a transmission rod, a connecting rod and a grip rod which are connected in sequence, and the transmission rod, the connecting rod and the grip rod are distributed in a Z shape. A second positioning block is provided at one end of the transmission rod away from the connecting rod, and the second positioning block is used for being clamped and installed on the switch cabinet.

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