Electromagnetic lock interlocking VCS isolation switch box with visible breakpoint
By introducing a combined design of interlocking mechanism and electromagnetic lock into the VCS isolation switch box, the electromagnetic lock interlocking is ensured, which solves the problem of insufficient motor isolation control in cement plants, improves safety and stability, and avoids box door closure The manual opening operation during the operation ensures the safety of the operator.
Patent Information
- Application Number
- CN202420692740.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-07
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-04-07
AI Technical Summary
The mechanical energy and electrical energy isolation control of the rotation of the motor in existing cement plants is not effective enough, resulting in frequent safety accidents. Especially during the maintenance and maintenance process, the VCS isolation switch box is insufficient to lock the locking effect, and there is a risk of electric shock and safety accidents.
A visible breakpoint electromagnetic lock interlocking VCS isolating switch box is designed. Through the combination of interlocking mechanism and electromagnetic lock, the isolation switch remains open when the box door is opened, and automatically closes when closed, and passes through the electromagnetic lock. Lock the joystick and push rod to prevent manual opening of the gate and improve safety and stability.
It realizes safe isolation when the box door is opened and closed, ensures the safety of operators, improves the safety and stability of the VCS isolation switch box, avoids manual opening operation when the box door is closed, and enhances the protection of operators .
Smart Images
Figure CN222338153U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of switch boxes, and in particular relates to an electromagnetic lock interlocking VCS isolating switch box with visible breakpoints. Background Art
[0002] Safety accidents caused by the failure to effectively isolate and control dangerous energy during the repair and maintenance of industrial equipment continue to occur. Most of these accidents are caused by electric shock or motor misoperation due to the failure to effectively isolate and control the power supply. In the process of cement production, crushing, homogenization, separation, burning, grinding, packaging, etc. are all completed by motor rotation, which makes the safety production risks of cement plants mainly focus on the energy isolation control of mechanical energy and electrical energy of motor rotation.
[0003] Most cement companies now require that all motor side control boxes in the production line must be equipped with VCS isolating switch boxes with visible breakpoints. VCS is the abbreviation of Vacuum Controlled Switch. The VCS isolating switch box has a built-in VCS isolating switch with visible contacts to ensure that during the inspection and maintenance of the production line, the VCS isolating switch box with visible breakpoints can be used to achieve physical visibility of the switch contacts and padlocking of the operating handle to prevent fooling, thereby ensuring the absolute safety of the inspection and maintenance personnel. The locking effect of the VCS isolating switch boxes on the market needs to be improved. When the box door is open, the closing action of the isolating switch may cause electric shock to the staff. After the box door is closed, if the isolating switch lever and the box door are not locked, it is also easy to cause safety accidents. Utility Model Content
[0004] The utility model aims to solve the above problems and provide an electromagnetic lock interlocking VCS isolating switch box with visible breakpoints.
[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:
[0006] A VCS isolating switch box with an electromagnetic lock interlocking with a visible breakpoint, comprising a box body and an isolating switch fixed inside the box body, a joystick rotatably connected to the side wall of the box body, and the joystick is used to drive the isolating switch to complete the opening or closing action, an interlocking mechanism for locking the joystick is arranged inside the box body, a box door is arranged on the box body, and a push rod for releasing the locking effect of the interlocking mechanism is fixed on one side of the box door, and an electromagnetic lock for interlocking the push rod and the box door through the joystick is arranged inside the box body. When the box door is opened, the isolating switch is in the opening state, the interlocking mechanism and the joystick are against each other, and the joystick is locked, so that the isolating switch always remains in the opening state when the box door is opened. After closing the box door, the push rod on the box door pushes the interlocking mechanism backward away from the joystick, releasing the locking of the joystick by the interlocking mechanism, and the isolating switch can be closed by rotating the joystick at this time, and the electromagnetic lock locks the joystick synchronously, and the joystick and the push rod are engaged with each other to lock the box door.
[0007] As a further optimization solution of the utility model, when the isolating switch is in a closed state, the operating rod and the push rod engage with each other.
[0008] As a further optimization scheme of the utility model, the operating lever includes a connecting rod rotatably connected to the side wall of the box body, the interlocking mechanism includes a limit block elastically connected to the side wall of the box body, and a slot is provided on the side of the limit block opposite to the connecting rod, and the slot is used to lock the connecting rod when the isolating switch is in the open state.
[0009] As a further optimization solution of the utility model, a guide shaft slidably connected to the side wall of the box body is fixedly provided on the limit block, and a spring is provided on the outer side of the guide shaft.
[0010] As a further optimization solution of the utility model, the joystick further comprises a lug fixedly arranged on the connecting rod, and a lock groove corresponding to the electromagnetic lock is formed on the lug.
[0011] As a further optimization scheme of the utility model, the push rod includes a rod body, and one end of the rod body is bent to form a bending portion, and a groove corresponding to the connecting rod is opened on the bending portion. The operating lever also includes a stopper fixed on the connecting rod, and the connecting rod and the stopper can pass through the groove, and the stopper is used to stop the bending portion when the disconnect switch is in the closed state.
[0012] As a further optimization solution of the utility model, the joystick also includes a handle arranged at one end of the connecting rod.
[0013] As a further optimization solution of the utility model, a status indicating component for displaying the opening and closing status of the isolating switch is provided inside the box.
[0014] As a further optimization solution of the present invention, a rainproof brim is formed at the front end of the top of the box body.
[0015] As a further optimization solution of the utility model, a window corresponding to the isolating switch and an assembly hole corresponding to the joystick are provided on the side wall of the box body.
[0016] The beneficial effects of the utility model are:
[0017] 1) When the box door of the utility model is opened, the interlocking mechanism locks the operating lever, so that when the box door is open, the isolating switch remains in the open state. After the box door is closed, the operating lever is unlocked by the push rod. When the operating lever is rotated to close, the electromagnetic lock locks the box door through the operating lever and the push rod, and the box door remains closed, thereby forming sufficient protection for the operator;
[0018] 2) When the box door of the utility model is closed, the upper circuit of the VCS isolating switch box receives the closing signal and then issues a driving command. At this time, the electromagnetic lock locks the joystick through the lug. When the upper circuit does not stop, the isolating switch joystick of the VCS isolating switch box is locked, and at this time, the joystick also locks the box door by engaging the push rod, avoiding manual opening operation when the box door is closed, thereby improving the safety and stability of the VCS isolating switch box;
[0019] 3) The connecting rod of the utility model has a rectangular cross-section. The limit block is tightened by a spring, and the top and bottom of the slot are respectively fitted with the upper and lower sides of the connecting rod, thereby improving the locking effect of the connecting rod. After the door is closed, the push rod pushes away from the limit block to release the lock. When no torque is applied to the connecting rod, the friction force generated during the unlocking process of the limit block is small, and the operating lever and the interlocking mechanism are not easily worn. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0021] Figure 2 It is a schematic diagram of the internal structure of the box of the utility model;
[0022] Figure 3 This is a schematic diagram of the working state of the utility model when the box door is opened;
[0023] Figure 4 yes Figure 3 The enlarged view of point A in the middle;
[0024] Figure 5 yes Figure 3 The enlarged view of point B in the middle;
[0025] Figure 6 It is a schematic diagram of the working state of the utility model when the box door is closed and the closing is completed.
[0026] in, Figure 3 and Figure 6This is a schematic diagram of the internal structure of the VCS disconnector box when it is flipped 90 degrees and the rear side wall of the box is placed horizontally on the ground.
[0027] In the figure: 1. box body; 2. isolating switch; 3. joystick; 31. connecting rod; 32. lug; 33. lock slot; 34. block; 35. handle; 4. interlocking mechanism; 41. limit block; 42. slot; 43. guide shaft; 44. spring; 5. box door; 6. push rod; 61. rod body; 62. bending part; 63. groove; 7. electromagnetic lock; 8. status indicator component; 9. rainproof visor; H. window; I. assembly hole. DETAILED DESCRIPTION
[0028] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.
[0029] Example
[0030] like Figure 1 and Figure 2 As shown, a VCS disconnector box with electromagnetic lock interlocking with visible breakpoints includes a box body 1 and a disconnector 2 fixed inside the box body 1, a joystick 3 is rotatably connected to the right wall of the box body 1, and the joystick 3 is used to drive the disconnector 2 to complete the opening or closing action, an interlocking mechanism 4 for locking the joystick 3 is provided at the rear end of the inner wall of the box body 1, a box door 5 is hinged on one side of the box body 1, and a push rod 6 for releasing the locking effect of the interlocking mechanism 4 is fixed on one side of the box door 5, and an electromagnetic lock 7 for interlocking the push rod 6 and the box door 5 through the joystick 3 is provided inside the box body 1. When the box door 5 is opened, the disconnector 2 is in the open state, the interlocking mechanism 4 abuts against the joystick 3, and locks the joystick 3, so that when the box door 5 is opened, the disconnector 2 always remains in the open state. After closing the box door 5, the push rod 6 on the box door 5 pushes the interlocking mechanism 4 backwards away from the operating rod 3, releasing the locking of the operating rod 3 by the interlocking mechanism 4. At this time, the disconnector 2 can be closed by rotating the operating rod 3. At the same time, the electromagnetic lock 7 locks the operating rod 3. When the interlocking mechanism 4 is pushed away from the operating rod 3, the operating rod 3 is embedded in the push rod 6. When the operating rod 3 is rotated to close, it can engage with the push rod 6, so that the electromagnetic lock 7 can lock the push rod 6 through the operating rod 3, and the box door 5 is always kept closed when the disconnector 2 is closed, thereby forming sufficient protection for the operator.
[0031] Specifically, see Figure 3-6The operating lever 3 includes a connecting rod 31 rotatably connected to the right side wall of the box body 1, and the interlocking mechanism 4 includes a limit block 41 elastically connected to the rear side wall of the box body 1, and a slot 42 is provided on the side of the limit block 41 opposite to the connecting rod 31, and the slot 42 is used to lock the connecting rod 31 when the disconnector 2 is in the open state. A guide shaft 43 is fixedly provided on the rear side of the limit block 41 and is slidably connected to the rear side wall of the box body 1, and a spring 44 is provided on the outer side of the guide shaft 43, and the two ends of the spring 44 are respectively against the limit block 41 and the rear side wall of the box body 1. The push rod 6 includes a rod body 61, and one end of the rod body 61 is bent to form a bent portion 62.
[0032] like Figure 2-5 As shown, when the door 5 is open, the isolating switch 2 is in the off state, the cross-section of the connecting rod 31 is rectangular, and the limit block 41 of the interlocking mechanism 4 is abutted against the connecting rod 31 by the spring 44. The top and bottom of the slot 42 are respectively fitted with the upper and lower sides of the connecting rod 31 to improve the locking effect of the connecting rod 31. After the door 5 is closed, the bent portion 62 of the push rod 6 pushes backward away from the limit block 41 to release the lock. When there is no torque on the connecting rod 31, the friction generated between the limit block 41 and the connecting rod 31 during the unlocking process is small and not easy to wear.
[0033] For further information, see Figure 6 The operating lever 3 further includes a lug 32 fixedly arranged on the top of the connecting rod 31, and a lock groove 33 corresponding to the electromagnetic lock 7 is provided on the lug 32. A groove 63 corresponding to the connecting rod 31 is provided on the bent portion 62 of the push rod 6. The operating lever 3 further includes a stopper 34 fixedly arranged on the front side of the connecting rod 31. The connecting rod 31 and the stopper 34 can pass through the groove 63, and the stopper 34 is used to stop the bent portion 62 when the disconnector 2 is in the closed state. A handle 35 is provided at one end of the connecting rod 31. One end of the connecting rod 31 is connected to the disconnector 2. The operator rotates the connecting rod 31 through the handle 35 to manually open and close the disconnector 2.
[0034] When the box door 5 is closed, the bent portion 62 of the push rod 6 moves backward, and the connecting rod 31 and the stopper 34 pass through the groove 63 on the bent portion 62. At this time, after the rotating handle 35 and the connecting rod 31 complete the closing, the stopper 34 rotates upward and is located on the upper front side of the bent portion 62, completing the engagement of the joystick 3 with the push rod 6. The upper circuit of the VCS isolating switch box receives the closing signal and then issues a driving command. At this time, the electromagnet coil of the electromagnetic lock 7 is energized, and the electromagnet is activated, so that the contact of the electromagnetic lock 7 is inserted into the lock groove 33 of the lug 32 to lock the joystick 3. Without stopping the upper circuit, the joystick 3 of the isolating switch 2 of the VCS isolating switch box is locked, and at this time, the joystick 3 also locks the box door 5 through the push rod 6 to avoid manual opening operation when the box door 5 is closed, thereby improving the safety and stability of the VCS isolating switch box.
[0035] In addition, a status indicator component 8 for displaying the opening and closing status of the isolating switch 2 is provided inside the box 1, and the status indicator component 8 is preferably an indicator light. A rainproof hood 9 is formed at the front end of the top of the box 1. The box door 5 is turned outward at an angle of 180 degrees, and the inner side of the box door 5 is sealed with a one-time glue foaming seal, and the incoming and outgoing cables are sealed with fastening bolts, so that the overall protection level of the isolating switch box reaches IP65. A window H corresponding to the isolating switch 2 is provided on the front side wall of the box 1 for observing the working status of the isolating switch 2, and an assembly hole I corresponding to the joystick 3 is also provided on the right side wall of the box 1 for installing the joystick 3. Compared with the traditional machine-side control box, the VCS isolating switch box can be configured with a power indicator light, a start button, a stop button, an emergency stop button, a key selection switch, etc. according to actual needs. It is suitable for the final power distribution and control of ordinary motors, forward and reverse motors, and variable frequency motors, and is suitable for load isolation during motor maintenance to ensure the safety of maintenance personnel and equipment. The VCS box has the characteristics of high safety, reasonable structure, beautiful appearance, waterproof and dustproof, etc. The rated current includes multiple current levels such as 32A, 63A, 100A, 160A, 200A, 250A, 315A, 400A, 630A, 800A, etc. The isolating switch 2 uses the ABB OT series original imported isolating switch, which can be configured with the above current specifications.
[0036] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.
Claims
1. A VCS isolating switch box with an electromagnetic lock interlock and visible breakpoint, comprising a box body (1) and an isolating switch (2) fixed inside the box body (1), characterized in that: A joystick (3) is rotatably connected to the side wall of the box (1), and the joystick (3) is used to drive the disconnector (2) to complete the opening or closing action. An interlocking mechanism (4) for locking the joystick (3) is provided inside the box (1). A box door (5) is provided on the box (1), and a push rod (6) for releasing the locking action of the interlocking mechanism (4) is fixedly provided on one side of the box door (5). An electromagnetic lock (7) is provided inside the box (1) for interlocking the push rod (6) and the box door (5) through the joystick (3).
2. The electromagnetic lock interlocking VCS isolating switch box with visible breakpoint according to claim 1 is characterized in that: When the isolating switch (2) is in a closed state, the operating rod (3) and the push rod (6) engage with each other.
3. The electromagnetic lock interlocking VCS isolating switch box with visible breakpoint according to claim 1 is characterized in that: The operating lever (3) comprises a connecting rod (31) rotatably connected to the side wall of the box body (1), and the interlocking mechanism (4) comprises a limit block (41) elastically connected to the side wall of the box body (1), and a slot (42) is provided on the side of the limit block (41) opposite to the connecting rod (31), and the slot (42) is used to lock the connecting rod (31) when the disconnector (2) is in an open state.
4. The electromagnetic lock interlocking VCS isolating switch box with visible breakpoint according to claim 3 is characterized in that: The limit block (41) is fixedly provided with a guide shaft (43) which is slidably connected to the side wall of the box body (1), and a spring (44) is provided outside the guide shaft (43).
5. The electromagnetic lock interlocking VCS isolating switch box with visible breakpoint according to claim 3 is characterized in that: The operating rod (3) further comprises a lug (32) fixedly arranged on the connecting rod (31), and a lock groove (33) corresponding to the electromagnetic lock (7) is formed on the lug (32).
6. The electromagnetic lock interlocking VCS isolating switch box with visible breakpoint according to claim 5 is characterized in that: The push rod (6) comprises a rod body (61), and one end of the rod body (61) is bent to form a bent portion (62), and a groove (63) corresponding to the connecting rod (31) is provided on the bent portion (62). The operating rod (3) also comprises a stopper (34) fixedly arranged on the connecting rod (31), and the connecting rod (31) and the stopper (34) can pass through the groove (63), and the stopper (34) is used to stop the bent portion (62) when the disconnector (2) is in a closed state.
7. The electromagnetic lock interlocking VCS isolating switch box with visible breakpoint according to claim 3 is characterized in that: The joystick (3) further comprises a handle (35) arranged at one end of the connecting rod (31).
8. The electromagnetic lock interlocking VCS isolating switch box with visible breakpoint according to claim 1 is characterized in that: A state indicating component (8) for displaying the opening and closing state of the isolating switch (2) is provided inside the box (1).
9. The electromagnetic lock interlocking VCS isolating switch box with visible breakpoint according to claim 1 is characterized in that: A rainproof brim (9) is formed at the front end of the top of the box body (1).
10. The electromagnetic lock interlocking VCS isolating switch box with visible breakpoint according to claim 1, characterized in that: A window corresponding to the isolating switch (2) and an assembly hole corresponding to the operating lever (3) are provided on the side wall of the box body (1).