CN116639566A - Automatic reset elevator speed limiter - Google Patents

Abstract

The application relates to an automatic reset elevator speed limiter, which comprises a speed limiter box body, a braking mechanism, a linkage rod and a rope clamping component, wherein the braking mechanism, the linkage rod and the rope clamping component are arranged in the speed limiter box body; the reset rod is directly inserted into the reset top block to push, so that the reset guide post pushes the movable chuck to realize reset, and when the movable chuck is pulled out, the reset top block automatically resets, and the time required by screwing in and out is reduced without the action of screwing in and out the reset rod.

Description

Automatic reset elevator speed limiter

Technical Field

The application relates to an elevator safety component, in particular to the field of elevator speed limiters, and particularly relates to an automatic reset type elevator speed limiter.

Background

The elevator is widely applied to daily life of people, and in order to ensure the safety of people and prevent the overspeed of the elevator from bringing harm to people, an elevator speed limiter is adopted in the elevator as a safety component for monitoring the overspeed of the elevator. When the elevator has overspeed operation fault or the elevator linkage function is tested, the elevator gives out a signal in time, and the safety loop of the elevator is cut off through the electric switch, so that the power supply of the system is cut off, and the traction machine is braked. And meanwhile, the rope clamping component is triggered to clamp the steel wire rope, so that after the lift car and the counterweight are stopped, if the lift car or the counterweight is stopped, the elevator outlet aimed at a floor is in the mid-air state, the rope clamping component is required to be reset by a reset structure, and the elevator falls or rises to the corresponding elevator outlet.

The existing reset structure is more reset mechanisms as shown in Chinese patent CN115448122A and CN115432536A, the reset rod is inserted into the fixing seat by threads and then screwed into the threaded hole of the movable clamp head, the movable clamp head is used for resetting the rope clamping component and the linkage rod, the reset rod in the scheme is inserted from the other end of the fixing seat, a certain length of path needs to be extended to the movable clamp head, the problem that the reset rod cannot be inserted quickly, needs to be tested for many times and cannot be screwed in place frequently occurs in the extending process, and meanwhile, the reset rod needs to be screwed out from the threaded hole after the movable clamp head is pulled to reset, and the time is wasted due to longer distance.

Disclosure of Invention

The application aims to provide an automatic reset type elevator speed limiter, which solves the problem that a reset rod in the existing speed limiter resets a movable chuck slowly.

In order to achieve the above purpose, the application adopts the following technical scheme:

the application provides an automatic reset type elevator speed limiter which comprises a speed limiter box body, a braking mechanism, a linkage rod and a rope clamping component, wherein the braking mechanism, the linkage rod and the rope clamping component are arranged in the speed limiter box body, the braking mechanism is used for detecting the speed of an elevator steel wire rope and triggering the linkage rod to act according to the speed, the linkage rod is connected with the rope clamping component and triggers the rope clamping component to act, the rope clamping component comprises a fixed chuck and a movable chuck, opposite end surfaces of the fixed chuck and the movable chuck are respectively provided with a clamping groove for the elevator steel wire rope to pass through, the linkage rod is connected with the movable chuck and is in linkage with the movable chuck, a reset top block capable of moving in the horizontal direction is arranged in the fixed chuck, a reset guide pillar is arranged in the reset top block, one end of the reset guide pillar extends into the movable chuck, the opposite end surfaces of the reset top block and the movable chuck are respectively provided with a limiting hole, the limiting hole is arranged corresponding to the reset guide pillar, the diameter of the reset guide pillar is larger than that of the reset guide pillar, the reset guide pillar is provided with a reset spring, two ends of the reset spring are respectively inserted into the limiting holes of the reset top block and the movable chuck, and the reset top block are respectively provided with reset holes, and the reset guide pillar is provided with reset holes, and the reset hole and the reset guide pillar is provided with the reset hole.

For the technical scheme. The applicant has further optimisation.

Optionally, one end of the reset guide post inserted into the movable chuck is connected with the movable chuck.

Further, at least two reset guide posts are arranged, the reset guide posts sequentially penetrate through the fixed clamping head and the speed limiter box body and extend out of the speed limiter box body, one ends, extending out of the speed limiter box body, of the reset guide posts are connected to the measuring plate, and reset holes for the reset rod to pass through are also formed in the measuring plate and the speed limiter box body.

Optionally, a switch mechanism for monitoring mechanical action of the speed limiter is arranged above the measuring plate, the switch mechanism controls on-off of the elevator safety loop, and the switch mechanism is connected to the side wall of the speed limiter box.

Further, the switch mechanism comprises a switch body, a contact switch and a roller, wherein the contact switch is arranged on the end face of the switch body, the roller is connected with the switch body through a swinging rod, one end of the swinging rod is hinged to the end face where the contact switch is located, the other end of the swinging rod is arranged on the upper end face of the measuring plate in a building mode, and the roller is located in the projection range of the through hole of the measuring plate in the horizontal direction.

Optionally, the reset ejector block is located in the groove of the side, close to the movable chuck, of the fixed chuck, and a relief groove is formed in the position, corresponding to the elevator steel wire rope, of the reset ejector block.

Further, in the state that the reset rod is inserted in the reset jacking block, the peripheral surface of the rear end of the reset rod is in contact with the roller, and compared with the prior art, the reset rod has the following advantages due to the application of the technical scheme:

according to the automatic reset type elevator speed limiter, the reset ejector block capable of horizontally moving is arranged in the fixed chuck, the reset guide post and the reset hole are arranged in the reset ejector block, one end of the reset guide post stretches into the movable chuck, the reset rod is inserted into the reset hole and extends into the reset ejector block during reset to push the reset ejector block, the reset guide post arranged in the reset ejector block pushes the movable chuck when the reset ejector block advances, the movable chuck is moved reversely, the steel wire rope of an elevator is not clamped any more, the connecting rod and the rope clamping part are reset along with the movable chuck, meanwhile, due to the existence of the reset spring, the reset ejector block can automatically rebound without manual reset when the reset rod is pulled out, and the reset ejector block can automatically reset to wait for the next use. The range of insertion of the reset rod is small, the distance is short, and quick alignment, pushing and resetting can be realized by inserting the reset rod into the through hole; the reset rod is directly inserted into the reset top block to push, so that the reset guide post pushes the movable chuck to reset, and when the reset rod is pulled out, the reset top block automatically resets, and the time required by screwing in and screwing out is reduced without the action of screwing in and screwing out the reset rod.

Drawings

Some specific embodiments of the application will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:

fig. 1 is a front schematic view of the overall structure of a quick-reset elevator governor in an encapsulated state according to one embodiment of the present application;

fig. 2 is a side view schematically showing the overall structure of a quick-return elevator governor in a packaged state according to one embodiment of the application;

fig. 3 is a schematic view showing the structure of the quick-return type elevator governor in a state where the governor housing is removed to show the internal main structure according to an embodiment of the present application;

FIG. 4 is a schematic view of the linkage connected to the brake mechanism and hook plate;

FIG. 5 is a schematic view showing the structure of the rope clamping member with the front cover plate removed in an unclamped state according to an embodiment of the present application;

FIG. 6 is a structural use diagram of the assembly of the reset knob and reset lever;

FIG. 7 is a schematic diagram of the structure of the reset top block;

fig. 8 is an enlarged schematic view at fig. 2A.

Wherein reference numerals are as follows:

1. a speed limiter box; 11. a braking mechanism; 12. a linkage rod; 13. a bayonet lock; 14. supporting the bending plate; 15. a return compression spring; 16. a top sheet;

2. a fixing seat; 21. fixing a chuck; 22. a movable chuck; 23. a pressure spring; 24. a clamping groove;

31. a hook plate; 32. a limit groove; 33. a limit column; 34. a connecting plate 341 and a U-shaped notch;

41. resetting the top block; 411. a relief groove; 42. resetting the guide post; 43. a reset hole; 44. a reset lever; 441. a positioning head; 45. a measuring plate; 46. a return spring; 47. a limiting hole;

51. a switch body; 52. a contact switch; 53. a roller;

6. a wire rope;

Detailed Description

The following description of the embodiments of the present application will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the application are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. In addition, the technical features of the different embodiments of the present application described below may be combined with each other as long as they do not collide with each other.

As shown in fig. 1 and 3, the present embodiment provides an automatic reset elevator speed limiter, which comprises a speed limiter box 1, a brake mechanism 11, a linkage rod 12 and a rope clamping component, wherein the brake mechanism 11 is arranged in the speed limiter box 1, the brake mechanism 11 is used for detecting the speed of an elevator steel wire rope 6 and triggering the linkage rod 12 to act according to the speed, and meanwhile, the main brake switch mechanism is actively triggered according to the speed of the steel wire rope 6, and is used for controlling the traction machine to stop and start, and the brake mechanism 11 triggers the rope clamping component to act through the linkage rod 12, so that the rope clamping component can clamp the steel wire rope 6 rapidly, and the elevator car is prevented from falling at a high speed.

As shown in fig. 5, the rope clamping component comprises a fixed seat 2, a fixed chuck 21 and a movable chuck 22 which are arranged on the fixed seat 2, the fixed seat 2 is connected in a frame, the fixed chuck 21 is connected with and fixed at one end in the fixed seat 2, the movable chuck 22 is slidably arranged in the fixed seat 2, the opposite end surfaces of the fixed chuck 21 and the movable chuck 22 are respectively provided with a clamping groove 24 for an elevator steel wire rope 6 to pass through, the steel wire rope 6 passes through the clamping grooves 24 between the fixed chuck 21 and the movable chuck 22, the cross section of the clamping grooves 24 is in a triangular structure, a pressure spring 23 is arranged between one side of the movable chuck 22 facing the fixed chuck 21 and the other opposite side of the fixed seat 2, and the pressure spring 23 is used for pushing the movable chuck 22 towards the direction of the fixed chuck 21.

The outside of fixing base 2 still is provided with hook plate 31, sets up the direction on the preceding curb plate of fixing base 2 or posterior lateral plate and leads to the groove, and the one end of hook plate 31 passes direction through groove fixed connection movable chuck 22 through the connecting pin, and the other end and the interlock pole 12 bottom sliding connection of hook plate 31 are provided with spacing post 33 in the outside of fixing base 2, and the lower limb of hook plate 31 is provided with spacing groove 32, and spacing groove 32 joint is in spacing post 33. Normally, due to the cooperation of the limit post 33 and the limit groove 32, the hook plate 31 is limited, and the movable chuck 22 is pulled to enable the movable chuck 22 to be far away from the fixed chuck 21, and as the linkage rod 12 drives the front hook plate 31 to act, the hook plate 31 loses the limitation on the movable chuck 22, and the movable chuck 22 is close to the fixed chuck 21 under the action of the pressure spring 23 to clamp the steel wire rope 6.

As shown in fig. 4, a bayonet lock 13 is fixedly connected to the bottom of the linkage rod 12, a supporting curved plate 14 is further sleeved on the linkage rod 12, both ends of the supporting curved plate 14 are sleeved on the linkage rod 12, a return compression spring 15 and a top sheet 16 are further sleeved outside the linkage rod 12, the top sheet 16 is fixed on the linkage rod 12, the return compression spring 15 is arranged between the top sheet 16 and the upper end of the supporting curved plate 14, a connecting plate 34 is arranged at the other end of the linkage rod 12 and connected with a hook plate 31, a U-shaped notch 341 is formed in the connecting plate 34, the U-shaped notch is clamped at a position, close to the bayonet lock 13, of the linkage rod 12 between the bayonet lock 13 and the supporting curved plate 14, so that when the linkage rod 12 is upwards, the hook plate 31 can be driven to upwards through the bayonet lock 13, meanwhile, the hook plate 31 can slide left and right on the linkage rod 12 due to the existence of the U-shaped notch 341, and the connection of the front hook plate 31 and the linkage rod 12 cannot be hindered when the movable chuck 22 moves towards the fixed chuck 21.

The fixed chuck 21 is provided with the recess towards one side of movable chuck 22, is provided with the kickback 41 that resets in the recess, and the kickback 41 that resets and recess shape phase-match, and the position that the kickback 41 corresponds elevator wire rope 6 is provided with the slot 411 that gives way of vertical orientation, like this when promoting the kickback 41 that resets to remove towards movable chuck 22, the kickback 41 that resets can not exert an influence to elevator wire rope 6.

As shown in fig. 6 and 7, a reset hole 43 is formed in the reset top block 41, the reset hole 43 is formed in a position between the reset guide posts 42, the reset hole 43 for the reset rod 44 to pass through is also formed in the fixed chuck 21, the reset hole 44 for the reset movable chuck 22 is further formed, the diameter of the reset rod 44 is not larger than that of the reset hole 43, so that the reset rod 44 can be inserted into the reset hole 43 and extend into the reset top block 41, the reset top block 41 can be pushed to move in the horizontal direction, the reset guide posts 42 are driven to push the movable chuck 22 in the horizontal direction when moving in the horizontal direction, the movable chuck 22 is pushed to the other end of the fixed seat 2, the elevator wire rope 6 is loosened, the movable chuck 22 drives the hook plate 31 to reset, the moving state of the hook plate 31 is transmitted to the brake mechanism 11 after reset, and the brake mechanism 11 simultaneously controls the traction machine to continue to act, so that the elevator is helped to reset.

The reset guide posts 42 are connected with the reset ejector block 41, the number of the reset guide posts 42 can be at least two, and can be 4 and or 6, and the reset guide posts 42 are symmetrically arranged, mainly for ensuring that the movable clamp block is pushed more stably, one end of each reset guide post 42 extends into the movable clamp 22, the other end sequentially penetrates through the reset ejector block 41 and the fixed clamp 21, limiting holes 47 are formed in opposite end surfaces of the reset ejector block 41 and the movable clamp 22, the limiting holes 47 are arranged corresponding to the reset guide posts 42, two ends of each reset guide post 42 are respectively inserted into the limiting holes 47 of the reset ejector block 41 and the limiting holes 47, the diameter of each limiting hole 47 is larger than that of the reset guide post 42, a reset spring 46 is sleeved outside the reset guide post 42, and two ends of each reset spring 46 are respectively inserted into the limiting holes 47 of the reset ejector block 41 and the movable clamp 22, so that when the reset ejector block 41 moves towards the movable clamp 22, the springs on the reset guide posts 42 compress, and when the reset rod 44 is pulled out, the reset ejector block 41 automatically resets due to spring rebound. The limiting hole 47 and the reset hole 43 on the reset top block 41 are blind holes.

In this example, one end of the reset guide post 42 inserted into the limiting hole 47 of the movable chuck 22 is connected with the movable chuck 22, so that linkage between the reset guide post 42 and the movable chuck 22 can be realized, and when the reset rod 44 pushes the reset top block 41, the reset guide post 42 pushes the movable chuck 22 to advance.

As shown in fig. 2, the reset guide post 42 further penetrates through the speed limiter box 1 and extends out of the speed limiter box 1, one ends of the reset guide post 42 extending out of the speed limiter box 1 are both connected to the measuring plate 45, the measuring plate 45 and the speed limiter box 1 are also provided with reset holes 43 for the reset rod 44 to pass through, the reset rod 44 penetrates through the reset holes 43 and the through holes to extend into the blind holes, the reset top block 41 is pushed to advance towards the other end of the fixed seat 2, the measuring plate 45 can help limit the reset rod 44, a limit head 441 is arranged at the rear end of the reset rod 44, and the diameter of the limit head 441 is larger than that of the reset hole 43.

As shown in fig. 8, a switch mechanism for monitoring mechanical action of a speed limiter is arranged above a measuring plate 45, the switch mechanism is used for controlling on-off of a safety loop of an elevator, after overspeed of a steel wire rope, not only a movable chuck clamps the steel wire rope, but also the switch mechanism cuts off the safety loop of the whole elevator, so that a car or a counterweight can not continue to descend and stop action, in the switch mechanism in the embodiment, the switch mechanism comprises a switch body 51, a contact switch 52 and a roller 53 in rotary connection, one end of a swinging rod is hinged on the bottom end surface of the roller switch body 51, the other end of the swinging rod is hinged with the roller 53, the contact switch 52 is also positioned on the bottom end surface of the switch body 51, the roller 53 is arranged at the upper end of the measuring plate 45 and extends to one side of a through hole, the contact switch 52 is positioned in a rotary path of the roller 53, so that the movable chuck 22 moves towards the fixed chuck 21 under the pushing of a hook plate 31 to clamp the steel wire rope 6, because the reset guide post 42 and the movable clamp 22 are linked, the movable clamp 22 pushes the reset guide post 42 and the measuring plate 45 to move leftwards, the measuring plate 45 simultaneously pushes the roller 53 erected at the upper end of the measuring plate to upwards, the contact switch 52 is touched in the upward process, temporary disconnection of a safety circuit is realized, when the reset is needed, the reset rod 44 is inserted into the reset hole 43, the movable clamp 22 is pushed to move rightwards to release the steel wire rope 6, at the moment, due to the insertion of the reset rod 44, the reset jacking block 41 at the top end of the reset rod 44 moves towards the other end of the fixed seat 2, the upper end of the limit head 441 still abuts against the roller 53, the safety circuit is still in a disconnection state, and only when the reset rod 44 is withdrawn, the roller 53 is reset, and the safety circuit is continuously erected at the upper end of the measuring plate 45, so that the user can be effectively prevented from forgetting the reset of the reset rod 44, at the same time, a certain safety function is provided, the reset rod 44 is pulled out only when the movable chuck 22 and the braking mechanism 11 are ensured to be reset smoothly, and the access of the safety circuit is realized after the point touch switch is not contacted with any structure.

Compared with the original mechanism, the movable clamp head 22 has the advantages that firstly, no additional structure is needed to control the switch, the movable clamp head 22 moves and pushes the measuring plate 45 to open the contact switch 52 so as to disconnect the circuit, secondly, double assurance is provided, after the movable clamp head 22 and the hook plate 31 are reset, after no problem is determined, the reset rod 44 is pulled out, the situation that the reset of the movable clamp head 22 and the hook plate 31 is not completed, but a safety circuit is in a passage is avoided. Thirdly, the reset rod 44 can be pulled out by a worker, and cannot fall into the limiting hole 47, so that the follow-up work is affected.

The switch mechanism is provided on the side wall outside the speed limiter case 1 by a switch body 51. The reset lever 44 is also provided outside the speed limiter case 1.

A thrust bearing is arranged in the reset top block 41; for limiting the action of the return lever 44 and avoiding friction between the surface of the return lever 44 and the return top block 41.

As can be seen from the above, according to the automatic reset type elevator speed limiter, the reset ejector block 41 is reset in the fixed chuck 21, the movable chuck 22 is pushed and reset through the reset guide post 42 on the reset ejector block 41 when the reset ejector block 41 is pushed, and meanwhile, the contact switch 52 is touched through the reset rod 44, so that the open circuit state of a safety loop is realized, double insurance is realized, and in addition, the reset ejector block 41 can be quickly reset under the action of the spring to wait for the next use.

The above embodiments are only for illustrating the technical concept and features of the present application, and are intended to enable those skilled in the art to understand the present application and to implement the same, but are not intended to limit the scope of the present application, and all equivalent changes or modifications made according to the spirit of the present application should be included in the scope of the present application.

Claims (7)

1. The utility model provides an automatic reset type elevator overspeed governor, it includes the overspeed governor box, sets up brake mechanism, trace and the rope clamping part in the overspeed governor box, brake mechanism is used for detecting elevator wire rope's speed state and triggers the trace action according to speed, the trace is connected with the rope clamping part and triggers the rope clamping part action, the rope clamping part includes fixed chuck and movable chuck, the terminal surface that fixed chuck and movable chuck are relative all is provided with the grip slot that is used for elevator wire rope to pass, the trace is connected with movable chuck and links with it, a serial communication port, be provided with the movable roof block that resets in the horizontal direction in the fixed chuck, be provided with the guide pillar that resets in the roof block that resets, in the one end of guide pillar extends to movable chuck, the spacing hole has all been seted up to the terminal surface that resets in roof block and the movable chuck relatively, the spacing hole corresponds the guide pillar setting that resets, reset spring's both ends are inserted respectively in the spacing hole of reset roof block and movable chuck, reset roof block and fixed chuck are provided with the blind hole that is used for reset through reset roof block and reset.

2. The automatic reset elevator speed limiter of claim 1, wherein the end of the reset guide post inserted into the movable clamp is connected with the movable clamp.

3. The automatic reset elevator speed limiter according to claim 1, wherein at least two reset guide posts are provided, the reset guide posts sequentially penetrate through the fixed clamping head and the speed limiter box body and extend out of the speed limiter box body, one ends of the reset guide posts extending out of the speed limiter box body are connected to the measuring plate, and reset holes for passing through reset rods are also formed in the measuring plate and the speed limiter box body.

4. The automatic reset elevator speed limiter according to claim 3, wherein a switch mechanism for monitoring mechanical actions of the speed limiter is arranged above the measuring plate, the switch mechanism controls on-off of an elevator safety loop, and the switch mechanism is connected to the side wall of the speed limiter box.

5. The automatic reset elevator speed limiter according to claim 4, wherein the switch mechanism comprises a switch body, a contact switch arranged on the end face of the switch body and a roller, the roller is connected with the switch body through a swinging rod, one end of the swinging rod is hinged to the end face where the contact switch is located, the other end of the swinging rod is erected on the upper end face of the measuring plate, and the roller is located in the projection range of the through hole of the measuring plate in the horizontal direction.

6. The automatic reset elevator speed limiter according to claim 1, wherein the reset ejector is located in a groove on one side of the fixed chuck close to the movable chuck, and a relief groove is formed in the reset ejector at a position corresponding to an elevator wire rope.

7. The automatic reset elevator speed limiter according to claim 1, wherein the outer peripheral surface of the rear end of the reset lever is abutted against the roller in a state where the reset lever is inserted in the reset top block.