Metal pull rope rotating wheel type switch cabinet indication adjusting mechanism

Abstract

A metal pull rope rotating wheel type switch cabinet indication adjusting mechanism comprises a transmission case, a movable plate and a tightness adjusting device, the movable plate is vertically arranged in the transmission case, the bottom of the movable plate is vertically connected with a sliding plate and is arranged at the bottom of the transmission case, the middle of the movable plate is vertically connected with a lead screw, and the lead screw is arranged in the transmission case. The lead screw is in threaded connection with the movable plate and extends to the outer side of the transmission box, a knob is arranged at the end of the lead screw, a pull rope is arranged on the movable plate, one end of the pull rope is wound on an external indicating rotating disc, the other end of the pull rope penetrates through the movable plate, and a tightness adjusting device is arranged on the pull rope; according to the utility model, the conventional metal pull rope rotating wheel type switch cabinet is modified, so that the fault that the switch indication is not in place can be effectively eliminated, the whole set of faulty switch cabinet can be prevented from being replaced through low-cost modification, and the problem that maintenance parts cannot be matched is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric switch cabinets, in particular to an indication adjustment mechanism of a metal pull-rope rotary switch cabinet. Background Art

[0002] As the use time goes by, the circuit breaker with metal pull rope rotary swing-in and swing-out mechanism (such as model 3WN6) has repeatedly experienced the fault of incorrect circuit breaker position indication. After multiple on-site inspections, processing and disassembly, it was found that the main cause of the fault was that the metal pull rope inside the circuit breaker swing-in and swing-out mechanism was aging and the stroke was insufficient, resulting in the position indicator component being unable to rotate to the correct position, and the rest of the switch cabinet components were able to be used normally; and if the entire switch cabinet was replaced due to the above fault during maintenance, the maintenance cost would increase significantly, and this type of switch cabinet model is usually old, and it is currently difficult to find matching maintenance parts on the market. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an indication adjustment mechanism for a metal pull-cord rotary switch cabinet. By modifying the existing metal pull-cord rotary switch cabinet, the fault of inadequate switch indication can be effectively eliminated. Through low-cost modification, the replacement of the entire set of faulty switch cabinets can be avoided, and the problem of the inability to match maintenance parts can be solved.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A metal pull-rope rotary switch cabinet indication adjustment mechanism includes a transmission box, a movable plate and a tension adjustment device. The movable plate is vertically arranged in the transmission box, the bottom of the movable plate is vertically connected to a slide plate and is arranged at the bottom of the transmission box, the middle of the movable plate is vertically connected to a screw rod, the screw rod is threadedly connected to the movable plate and extends to the outside of the transmission box, a knob is arranged at the end of the screw rod, a pull rope is arranged on the movable plate, one end of the pull rope is wound on an external indicating rotating disk, the other end of the pull rope passes through the movable plate, and the pull rope is provided with a tension adjustment device.

[0006] In a preferred solution, a tooth groove is provided at the bottom of the slide plate, a transmission rod is provided at the rear of the transmission box, and a transmission gear is sleeved on the transmission rod and meshed with the tooth groove.

[0007] In a preferred solution, the tension adjustment device includes a fixed block, a locking block and a sliding block. The fixed block is fixedly mounted on the tail end of the pull rope, and the locking block and the sliding block are movably connected to the pull rope and can adjust their positions.

[0008] In a preferred solution, the sliding block and the locking block are sleeved on the outer wall of the pull rope and slide freely along the pull rope, and a locking plate is provided on the side of the sliding block.

[0009] In a preferred solution, a threaded hole is provided at the axis of the locking block, and an external thread is correspondingly provided on the locking plate. The locking plate is threadedly connected to the threaded hole and together clamps the pull rope.

[0010] The invention discloses an indication adjustment mechanism for a metal pull-cord rotary switch cabinet. The mechanism can freely change the tightness of the metal pull-cord by arranging a tension adjustment device on the internal pull-cord of the switch cabinet, thereby solving the problem that the switch cabinet cannot indicate in place due to aging of the metal pull-cord, so as to meet various travel needs. The mechanism is simple to operate and easy to use. It is not only suitable for pull-cord rotary switch cabinets of different models, but also can effectively reduce maintenance costs and improve maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is an enlarged schematic diagram of the tension adjustment device of the utility model.

[0014] In the figure: transmission box 1, movable plate 2, pull rope 3, indicating rotating disk 4, screw rod 5, slide plate 6, tooth groove 7, transmission gear 8, transmission rod 9, knob 10, tension adjustment device 11, fixed block 111, locking block 112, sliding block 113, threaded hole 114, locking plate 115. DETAILED DESCRIPTION

[0015] like Figure 1 As shown, a metal pull-rope rotary switch cabinet indication adjustment mechanism includes a transmission box 1, a movable plate 2 and a tension adjustment device 12. The transmission box 1 is vertically provided with a movable plate 2, the bottom of the movable plate 2 is vertically connected with a slide plate 6 and is arranged at the bottom of the transmission box 1, the middle of the movable plate 2 is vertically connected with a screw rod 5, the screw rod 5 is threadedly connected to the movable plate 2 and extends to the outside of the transmission box 1, and a knob 10 is arranged at the end of the screw rod 5. A pull rope 3 is arranged on the movable plate 2, one end of the pull rope 3 is wound on the external indicating rotating disk 4, and the other end of the pull rope 3 passes through the movable plate 2, and a tension adjustment device 11 is arranged on the pull rope 3; a tooth groove 7 is opened at the bottom of the slide plate 6, and a transmission rod 9 is arranged at the tail of the transmission box 1, and a transmission gear 8 is sleeved on the transmission rod 9 and is meshed with the tooth groove 7;

[0016] When the device is working, the screw rod 5 can be driven to rotate by rotating the knob 10 with a wrench, thereby driving the movable plate 2 to slide along the screw rod 5, and the slide plate 6 at the bottom of the movable plate 2 can slide synchronously along the transmission box 1 driven by the movable plate 2, and the tooth groove 7 on the slide plate 6 is meshed and connected with the transmission gear 8. The movement of the slide plate 6 can drive the transmission gear 8 to rotate around its own axis, thereby driving the transmission rod 9 to rotate synchronously and complete the corresponding electrical operation;

[0017] When the movable plate 2 moves forward, the pull rope 3 will be pulled, and the pull rope 3 will drive the indicating rotating disk 4 to rotate. When the switch is shaken to the operation, maintenance and test positions respectively, the pull rope 3 will pull the indicating rotating disk 4 to the corresponding position (the indicating rotating disk 4 is affixed with operation, maintenance and test labels). When the movable plate 2 moves backward, a spring rotation mechanism is arranged in the rotating disk 4, which can automatically retract the pull rope 3 and rotate it back to its position.

[0018] The preferred solution is Figure 2 As shown, the tension adjustment device 11 includes a fixed block 111, a locking block 112 and a sliding block 113. The fixed block 111 is fixedly installed at the tail end of the pull rope to prevent the pull rope 3 from sliding out of the movable plate 2. The locking block 112 and the sliding block 113 are movably connected to the pull rope and can adjust their positions. The sliding block 113 and the locking block 112 are sleeved on the outer wall of the pull rope 3 and slide freely along the pull rope 3.

[0019] When the movable plate 2 moves forward along the screw rod 5, the pull rope 3 drives the indicating rotating disk 4 to rotate. When the movable plate 2 moves backward along the screw rod 5, the rotating disk 4 will automatically rotate and reel in the pull rope 3 under the action of the internal spring. After the switch cabinet has been used for a long time, the spring and the pull rope 3 inside the rotating disk 4 will age.

[0020] When the pull rope 3 ages and becomes longer, the movable plate 2 moves forward and drives the rotating disk 4 through the pull rope 3, which causes the rotating disk 4 to not rotate properly (the pull rope travel becomes longer). At this time, the sliding block 113 and the locking block 112 need to be moved inward and fixed to shorten the length of the pull rope 3;

[0021] When the internal spring of the rotating disk 4 ages, the movable plate 2 moves forward and drives the rotating disk 4 through the pull rope 3, which will cause the rotating disk 4 to not rotate into place (the rotation stroke of the rotating disk 4 becomes longer). At this time, it is also necessary to move the sliding block 113 and the locking block 112 inward and fix them to shorten the length of the pull rope 3.

[0022] The preferred solution is Figure 2 As shown, a locking plate 115 is provided on the side of the sliding block 113; a threaded hole 114 is provided at the axis of the locking block 112, and a thread is correspondingly provided on the locking plate 115, and the locking plate 115 is threadedly connected with the threaded hole 114 and clamps the pull rope 3;

[0023] When the positions of the sliding block 113 and the locking block 112 are adjusted, it is only necessary to screw the locking plate 115 on the side of the sliding block 113 into the threaded hole 114. Since the sliding block 113 is threadedly connected with the locking plate 115, the locking plate 115 can clamp the pull rope 3 inward, and finally the positions of the sliding block 113 and the locking block 112 on the pull rope 3 remain fixed.

Claims

1. A metal pull-rope rotary switch cabinet indication adjustment mechanism, comprising a transmission box (1), a movable plate (2) and a tension adjustment device (11), characterized in that: A movable plate (2) is vertically arranged in the transmission box (1), the bottom of the movable plate (2) is vertically connected to a slide plate (6) and is arranged at the bottom of the transmission box (1), the middle of the movable plate (2) is vertically connected to a screw rod (5), the screw rod (5) is threadedly connected to the movable plate (2) and extends to the outside of the transmission box (1), and a knob (10) is arranged at the end of the screw rod (5), a pull rope (3) is arranged on the movable plate (2), one end of the pull rope (3) is wound around an external indicating rotating disk (4), and the other end of the pull rope (3) passes through the movable plate (2), and a tension adjustment device (11) is arranged on the pull rope (3).

2. The metal pull-rope rotary switch cabinet indication adjustment mechanism according to claim 1 is characterized in that: A tooth groove (7) is provided at the bottom of the slide plate (6), and a transmission rod (9) is provided at the rear of the transmission box (1). A transmission gear (8) is sleeved on the transmission rod (9) and meshes with the tooth groove (7).

3. The metal pull-rope rotary switch cabinet indication adjustment mechanism according to claim 1 is characterized in that: The tension adjustment device (11) comprises a fixed block (111), a locking block (112) and a sliding block (113); the fixed block (111) is fixedly mounted on the tail end of the pull rope (3); the locking block (112) and the sliding block (113) are movably connected to the pull rope (3) and can freely adjust their positions.

4. The metal pull-rope rotary switch cabinet indication adjustment mechanism according to claim 1 is characterized in that: The sliding block (113) and the locking block (112) are sleeved on the outer wall of the pull rope (3) and slide freely along the pull rope (3); a locking plate (115) is provided on the side of the sliding block (113).

5. The metal pull-rope rotary switch cabinet indication adjustment mechanism according to claim 4 is characterized in that: A threaded hole (114) is provided at the axis of the locking block (112), and an external thread is correspondingly provided on the locking plate (115). The locking plate (115) is threadedly connected to the threaded hole (114) and together clamps and fixes the pull rope (3).

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