CN115924677A - Car frame follow-up speed limiter - Google Patents

Abstract

The invention discloses a car frame follow-up speed limiter which comprises a speed limiting part and a safety part, wherein the speed limiting part is connected with the safety part, the speed limiting part comprises a speed limiter, the speed limiter is arranged on a car frame and comprises a speed limiter device and a speed limiter shell, a plurality of steel wire tensioning wheels are arranged in the speed limiter, the speed limiter can ensure that an elevator can trigger safety action in time under the condition of accidental overspeed, and the speed limiter can be linked with other safety parts such as safety tongs and the like to brake the elevator to ensure the safety of passengers.

Description

Car frame follow-up speed limiter

Technical Field

The invention relates to the field of car braking, in particular to a car frame follow-up speed limiter.

Background

The elevator overspeed governor is one of four big safety parts of elevator, can ensure that the elevator can in time trigger safe action under the condition of unexpected hypervelocity, and then can link with other safety parts such as safety tongs to stop the elevator (or to heavily), prevent at the bottom of the car mound or dash the top, and then the safety of personnel or goods in the guarantee car. The existing speed limiter is generally installed at the top of an elevator machine room or a shaft, and the safety tongs are installed on a car frame, so that the installation mode has the following defects: 1. the too long wire rope between the speed limiter and the safety gear may cause the response of the safety gear to be slow. 2. The speed limiter adopts a fixed pulley structure, and a steel wire rope is about twice of the height of a well, so that the cost is too high.

Chinese patent document CN108455403A discloses a "car follow-up elevator governor". The elevator car door opening and closing mechanism comprises a rotating device and at least one three-link mechanism, wherein the three-link mechanism is provided with a first connecting rod, a second connecting rod and a third connecting rod which are sequentially connected, the first connecting rod and the third connecting rod are respectively rotatably connected with the rotating device, the first connecting rod and/or the third connecting rod are connected with the rotating device through a first spring, the rotating device is provided with a driving wheel, the driving wheel is driven by a synchronous belt or a steel wire rope which is arranged along the vertical direction, the two ends of the synchronous belt and the two ends of the steel wire rope are respectively fixed at the top and the bottom of a hoistway, the elevator car door opening and closing mechanism further comprises an electrical trigger device and a mechanical trigger device, the electrical trigger device is provided with a first trigger stop block, the mechanical trigger device is provided with a second trigger stop block, and the first trigger stop block and the second trigger stop block are arranged on a rotating path after the first connecting rod or the third connecting rod radially moves along the rotating device. But this overspeed governor locking wire rope's mode is comparatively single to locking effect is relatively not good.

Disclosure of Invention

The car frame follow-up speed limiter is integrated on a car frame, the speed limiter follows up with the car frame, the lower part of the speed limiter is linked with the safety tongs through a link mechanism, and the response speed of the safety tongs can be effectively improved; the fixed pulley structure is cancelled, and the length of the steel wire rope can be reduced by half, so that the steel wire rope tensioning device can be further reduced, and the cost is further reduced.

The technical problem of the invention is mainly solved by the following technical scheme: the speed limiting device comprises a speed limiting part and a safety part, wherein the speed limiting part is connected with the safety part, the speed limiting part comprises a speed limiter, the speed limiter is arranged on a car frame and comprises a speed limiter device and a speed limiter shell, and a plurality of steel wire rope tension wheels are arranged in the speed limiter. Traditional overspeed governor generally sets up on the well top for the fixed pulley structure, and the design can make the speed limit wire rope length overlength that passes the overspeed governor like this, increases running cost, simultaneously because the elevator well is longer, if fix the overspeed governor on the well top as the fixed pulley, the overspeed governor triggers linkage safety tongs and can lead to triggering reaction time longer because of the distance overlength, personnel's safety in the elevator protection elevator of can't stopping in time. Consequently this patent sets up the overspeed governor in sedan-chair frame bottom, and synchronous motion about the overspeed governor accompanies the sedan-chair frame, and safety portion directly links to each other with the speed limit part simultaneously, and the overspeed governor part can directly trigger the linkage safety part and make the elevator stop of stopping, and the response time of stopping when can greatly reducing the unexpected hypervelocity of elevator.

Preferably, the speed governor device is arranged in a speed governor housing, and the wire rope tension pulley is fixed around the speed governor device. The speed limiter is arranged in the speed limiter shell, a plurality of steel wire rope tension wheels are arranged on the periphery of the speed limiter, and when the speed limiter needs to be stopped, the plurality of steel wire rope tension wheels can better clamp the speed limiting steel wire rope, so that the speed limiting effect of the speed limiter is enhanced, and sufficient tension is provided.

Preferably, a speed-limiting steel wire rope is arranged between the steel wire rope tension wheel and the speed limiter device, and the speed-limiting steel wire rope vertically penetrates through the steel wire rope tension wheel and the speed limiter device. The speed-limiting steel wire rope has two modes of passing through the speed limiter and being installed, and the speed-limiting steel wire rope directly passes through a speed limiter device and a steel wire rope tension pulley on the side edge of the speed limiter; the other installation mode is that the speed-limiting steel wire rope penetrates through one end of the speed limiter and is wound on the steel wire rope tension pulley and the speed limiter device. When the elevator needs to be stopped, the steel wire rope tension wheel and the speed limiter device are locked simultaneously to limit the speed of the elevator.

Preferably, the speed limiting part further comprises a limiting rail, the limiting rail is arranged above the speed limiter shell, an optical axis rail is arranged in the limiting rail, and a compensation spring is sleeved on the optical axis rail. Both sides below the speed limiter are provided with limiting tracks, the speed limiter is arranged in the middle of the limiting tracks on both sides, the center of the limiting track on one side is provided with an optical axis track, and the optical axis track is sleeved with a compensating spring. Overspeed governor upper end top surface butt respectively in the spacing track in both sides mends storehouse spring below, the overspeed governor is connected with the optical axis track and can slide on the optical axis track, can produce the vibration when the elevator stops, and the overspeed governor can vibrate from top to bottom along with it, and compensating spring can give a compensation dynamics for the overspeed governor, and then reduces because the elevator vibrations lead to the overspeed governor range of vibrations too big, finally makes the problem that the safety tongs touched by mistake.

Preferably, the safety part comprises a safety gear pull rod and safety gears, the safety gear pull rod comprises a first pull rod and a third pull rod, a second pull rod is arranged between the first pull rod and the third pull rod, and the safety gears comprise safety gear trigger pull rods. When the elevator brakes and stops limiting speed, the speed limiter drives the safety gear pull rod to move, and finally the safety gear is driven to work, so that the elevator brakes and stops.

Preferably, the first pull rod is arranged on the bottom surface of the speed limiter shell, the second pull rod is respectively connected with the first pull rod and the third pull rod, and the safety gear trigger pull rod is respectively connected with the third connecting rod and the safety gear trigger pull rod. The safety tongs pull rod is divided into a first pull rod, a second pull rod and a third pull rod, the first pull rod is arranged at the bottom end of the speed limiter, when the speed limiter works, the speed limiter moves upwards to drive the first pull rod, the second pull rod moves upwards along with the first pull rod synchronously, the third pull rod slides on the surface of the second pull rod along with the upward movement of the second pull rod, and the other end of the third pull rod is connected with a safety tongs trigger rod to trigger the response of the safety tongs.

Preferably, holes are formed in the upper end and the lower end of the speed limiter shell, the speed limiting steel wire rope penetrates through the holes and is arranged between the steel wire rope tension wheel and the speed limiter device, the steel wire rope tension wheels are arranged on the inner sides of the upper end and the lower end of the speed limiter shell, and the speed limiting steel wire rope is pressed on the speed limiter device through the steel wire rope tension wheels and is wound on the speed limiter device for 180 degrees. A hole steel wire rope at the upper end and the lower end of a speed limiter shell penetrates through holes at the upper end and the lower end and passes through a speed limiter and a steel wire rope tension wheel, a steel wire penetrates through the middle of the speed limiter and the steel wire rope tension wheel and is wound on the speed limiter and the steel wire rope tension wheel, and efficient speed limitation can be achieved.

Preferably, the speed limiter shell comprises a front end face and a rear end face, a steel wire rope tension wheel and a speed limiter device are arranged between the two end faces, connecting pieces are arranged on the two end faces, the steel wire rope tension wheel is arranged between the connecting pieces and the two end faces, the speed limiter steel wire rope vertically penetrates through the speed limiter, and the speed limiter steel wire rope is pressed on the speed limiter through the steel wire rope tension wheel. The utility model provides a speed limiter casing includes that two panels are as major structure, and two panels pass through fastener fixed connection together, and the speed limiter device is installed in the middle of two panels, and two panel side outsides are connected with the connecting piece, and the connecting piece has three face, and two faces that parallel are connected with the panel, and the connecting piece center is equipped with wire rope and rises and tightly take turns and be connected with the speed limiter device. The speed-limiting steel wire rope penetrates through the connection part of the steel wire rope tension wheel at the center of the connecting piece and the speed limiter device. When the elevator needs to be braked and stopped to limit speed, the speed limiter device and the steel wire rope tension wheel lock the speed limiting steel wire rope, the speed limiter device and the steel wire rope form a rigid whole, then the speed limiter device and the car frame move relatively, and then the safety tongs pull rod is pulled, so that the elevator is braked to limit speed.

The invention has the beneficial effects that: the speed limiter is arranged at the bottom end of the car frame and used as a movable pulley structure to move up and down along with the car frame, so that the length of the steel wire rope is effectively reduced; the periphery of the speed limiter device is provided with a plurality of steel wire rope tension wheels which can be arranged in various modes, so that the speed can be limited more efficiently when the elevator is overspeed unexpectedly; the safety gear is directly arranged below the speed limiter, so that the speed limiter can be linked to trigger the safety gear to brake the elevator more quickly.

Drawings

Fig. 1 is a schematic diagram of an elevator car frame follow-up speed limiter.

Fig. 2 is a schematic view of linkage of an elevator car frame follow-up speed limiter and a safety gear.

Fig. 3 is a schematic view of the installation of an elevator car frame follow-up speed limiter.

Fig. 4 is a schematic diagram of two tensioning modes of the follow-up speed limiter of the elevator car frame.

In the figure, 1, a car frame, 2, a speed limiter steel wire rope, 3, a steel wire rope tensioning device, 4, a limiting rail, 5, an optical axis rail, 6, a compensating spring, 7, a speed limiter, 8, a safety gear connecting rod, 9, a safety gear, 7.1 of a speed limiter device, 7.2 of a speed limiter shell, 7.3 of a steel wire rope tensioning wheel, 8.1 of a first connecting rod, 8.2 of a second connecting rod, 8.3 of a third connecting rod and 9.2 of a safety gear triggering pull rod are arranged.

Detailed Description

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.

Example 1: the car frame follow-up speed limiter comprises a speed limiting part and a safety part, wherein the speed limiting part is connected with the safety part and comprises a speed limiter 7, the speed limiter is arranged on a car frame 1, the speed limiter 7 comprises a speed limiter device 7.1 and a speed limiter shell 7.2, and a plurality of steel wire rope tension wheels 7.3 are arranged in the speed limiter 7. Overspeed governor 7 sets up on sedan-chair frame 1, overspeed governor wire rope 2 passes overspeed governor 7 from wire rope rises and tightly installs 3, be equipped with the spacing track 4 of symmetry in overspeed governor top both sides, spacing track 4 inboard is equipped with the dead slot, be equipped with optical axis track 5 in the spacing track 4 dead slot, the hole site that optical axis track 5 reserved on passing overspeed governor casing 7.2 is connected at the upper and lower both ends of dead slot in spacing track 4, optical axis track 5 plays the spacing effect to the overspeed governor, overspeed governor 7 can slide on optical axis track 5, lock the overspeed governor on optical axis track 5 through the screw. The optical axis track 5 is sleeved with a compensation spring 6, the lower end of the compensation spring 6 is propped against the speed limiter 7, and the upper end of the compensation spring is propped against the top end 2 of the limiting track 6. The normal operating of elevator probably produces vibrations, and vibrations can make overspeed governor 7 up-and-down motion extrusion compensating spring 6, leads to compensating spring 6 to give 7 great compensating force of overspeed governor and cause the overspeed governor to drive the safety tongs motion rather than being connected, and then can lead to the safety tongs to trigger work by mistake. Therefore, a gasket can be added between the speed limiter 7 and the compensating spring 6, and the gasket can adjust the compensating force of the compensating spring 6 according to different working conditions and environments, so that the problem that the safety tongs are touched by mistake is solved. A safety gear connecting rod 8 is connected below the speed governor 7, and the safety gear connecting rod 8 triggers a linkage safety gear 9. Safety gear pull rod 8 includes first pull rod 8.1 and third pull rod 8.3, is equipped with second pull rod 8.2 between first pull rod 8.1 and the third pull rod 8.3, and safety gear 9 includes safety gear trigger pull rod 9.2. The first pull rod 8.1 is arranged on the bottom surface of the speed limiter shell 7.2, and the second pull rod 8.2 is respectively connected with the first pull rod 8.1 and the third pull rod 8.3, and the safety gear trigger pull rod 9.2 is respectively connected with the third connecting rod 8.3 and the safety gear trigger pull rod 9.2. The safety gear 9 comprises a safety gear device and a safety gear trigger lever 9.2. The upper end of the first connecting rod 8.1 is rigidly connected with the speed limiter shell 7.2, the second connecting rod 8.2 is a sheet metal bending piece, a notch formed by bending the second connecting rod 8.2 faces downwards, and the edge of the other end of the second connecting rod is connected with the lower end of the first connecting rod 8.1 through a shaft body. One end of the shaft body of the second connecting rod 8.2 is sleeved with the first connecting rod 8.1, and a spring can be arranged in the middle. Because first connecting rod 8.1 and second connecting rod 8.2 are connected through an axis body between, therefore first connecting rod 8.1 and second connecting rod 8.2 can realize coaxial slip in certain extent, when overspeed governor 7 slides from top to bottom because the elevator vibrations take place, overspeed governor 7 can not directly drive safety connecting rod 8 and then makes safety tongs trigger pull rod upward movement, causes safety tongs 9 mistake to touch work. The first connecting rod and the second connecting rod can be combined into the same connecting rod according to specific conditions when needed. The other end of the second connecting rod 8.2 is a plane with a bent edge, one end of the third connecting rod 8.3 is connected with the plane, the third connecting rod 8.3 can slide on the plane, and the other end of the third connecting rod 8.3 is connected with the safety gear triggering pull rod 9.2. When the elevator needs to be braked and stopped in an ascending mode, the speed limiter 7 locks the speed limiting steel wire rope 2 to form a whole rigid whole, the speed limiter 7 can move upwards, the speed limiter 7 can directly pull the first connecting rod 8.1 to move upwards when moving upwards, the first connecting rod 8.1 can drive one end, connected with the first connecting rod 8.1, of the second connecting rod 8.2 to move upwards when moving upwards, the second connecting rod 8.2 can also pull the third connecting rod 8.3 to move upwards at the same time, and finally the third connecting rod 8.3 drives the safety gear trigger pull rod 9.2 to move upwards so that the safety gear 9 is triggered to start to brake and brake the elevator. When the elevator needs to be braked and stopped downwards, the speed limiter 7 locks the speed limiting steel wire rope 2 to form a whole rigid whole, the speed limiter 7 can move upwards, the speed limiter 7 can directly push the first connecting rod 8.1 to move downwards when moving downwards, the first connecting rod 8.1 can drive one end, connected with the first connecting rod 8.1, of the second connecting rod 8.2 to move downwards when moving downwards, the other end of the second connecting rod 8.2 can upwards tilt to pull the third connecting rod 8.3 to move upwards, and finally the third connecting rod 8.3 drives the safety gear trigger pull rod 9.2 to move upwards to trigger the safety gear 9 to start working to brake and brake the elevator.

As shown in fig. 4, the speed limiter 7 is a conventional machine-roomless elevator speed limiter, which can be replaced by another type of speed limiter. A speed limiter shell 7.2 comprises four metal blocks which are spliced into a speed limiter shell 7.2 frame, hole sites through which speed limiting steel wire ropes can pass are reserved on an upper metal block and a lower metal block, and hole sites of optical axis tracks are reserved on the edges of the upper metal block and the lower metal block. The new position is equipped with fixed hole site in two metal blocks of overspeed governor casing 7.2 sides, passes fixed hole site and installs overspeed governor device 7.1 in overspeed governor casing 7.2, all is equipped with a wire rope tight pulley 7.3 that rises in two upper and lower metal block inboards, and 7.3 the mounting means are tight pulley 7.3 that rise in the wire rope of overspeed governor 7: the two tension wheels 7.3 are arranged at an upper 180-degree angle and a part of a fixing piece for fixing the steel wire rope tension wheel 7.3 at the upper end of the speed limiter shell 7.2 extends out to fix the third steel wire rope tension wheel 7.3 at one side of the speed limiter device. The speed-limiting steel wire rope 2 extends out of the steel wire tensioning device 3, after passing through a corresponding hole of a metal block at the upper end of the speed limiter shell 7.2, the speed-limiting steel wire rope 2 is wound around and passes through a steel wire tensioning wheel 7.3 at the upper end of the speed limiter shell 7.2, after passing through the steel wire tensioning wheel 7.3 at the upper end, the speed-limiting steel wire rope 2 is wound on the speed limiter device 7.1 for 180 degrees, after passing through the speed limiter device 7.1, the speed-limiting steel wire rope extends to a steel wire tensioning wheel 7.3 at the lower end of the speed limiter shell 7.2, and the speed-limiting steel wire rope passes through a hole at the lower end of the speed limiter shell 7.2. When the elevator braking device works, the steel wire rope tension wheels 7.3 at the upper end and the lower end, the steel wire rope tension wheels 7.3 at the side edges and the speed limiter device 7.1 at the center lock the speed limiting steel wire rope 2 wound in the steel wire rope tension wheels 7.3 and the speed limiter device 7.1 at the center at the same time, and the steel wire rope tension wheels 7.3 and the speed limiter device 7.1 can lock the speed limiting steel wire rope 7.2 more quickly and efficiently under the action of force at the same time, and can also deal with the elevator overspeed condition with larger load and brake and limit speed. After the speed limiter 7 locks the speed limiting steel wire rope 2, the speed limiter drives the safety connecting rod 8 to trigger the safety tongs 9 to work so as to brake and brake the elevator.

Example 2: as shown in fig. 4, another speed governor housing can be used according to actual conditions, the rest of the car follow-up speed governor is consistent, the speed governor housing 7.2 comprises three metal blocks, two large metal blocks are fastened through a connecting piece to form a housing frame of the speed governor housing 7.2, a hole is formed in the center of the two metal blocks, and the speed governor device 7.1 is connected with the hole and fixed in the center of the speed governor housing. The middle of the top ends of the two large metal blocks is connected with a smaller metal block, and two steel wire rope tension wheels 7.3 are fixed on a connecting piece connected with the metal block. The side edges of the two large metal blocks are provided with connecting pieces, the connecting pieces are provided with three surfaces, two surfaces parallel to the metal blocks are provided with empty grooves, and a steel wire rope tension wheel 7.3 is arranged between the empty grooves of the two surfaces. The steel wire rope tension wheels 7.3 are distributed around the speed limiter device 7.1. The speed limiting steel wire rope 2 extends from the steel wire tensioning device 3 to the speed limiter 7, directly extends through the steel wire tensioning device 3 which is arranged between the steel wire tensioning wheel 7.3 and the speed limiter device 7.1 in the connecting piece and extends downwards to the lower steel wire tensioning device 3, and the speed limiter steel wire rope 2 is not wound on the speed limiter device 7.1. When the elevator braking device works, the steel wire rope tension wheel 7.3 fixed in the connecting piece and the speed limiting steel wire rope 2 in the center are simultaneously locked by the speed limiter device 7.1, and after the speed limiter 7 locks and limits the speed limiting steel wire rope 2, the speed limiter can drive the safety connecting rod 8 to trigger the safety tongs 9 to work to brake and brake the elevator. Because the speed-limiting steel wire rope 2 only needs to pass through the middle of the steel wire rope tension wheel 7.3 and the speed limiter device 7.1 on one side and does not need to be wound on the steel wire rope tension wheel 7.3 and the speed limiter device 7.1, the installation and the disassembly are quicker, and the elevator can be debugged and maintained more quickly, so that the speed limiter shell 7.2 in the embodiment can be used in the process of dealing with the elevator operation environment with small load.

When in work: as shown in fig. 2, after the elevator exceeds the rated speed within a certain range, the speed limiter device 7.1 is braked and stopped, the speed limiter steel wire rope 2 and the speed limiter device 7.1 form a rigid whole under the action of the pressure of the steel wire rope tension wheel 7.3, the speed limiter device 7.1 is rigidly mounted on the speed limiter shell 7.2, so that the speed limiter 7 and the speed limiter steel wire rope 2 form a whole, and the speed limiter steel wire rope 2 is fixed in the hoistway through the steel wire rope tension device 3, so that the speed limiter 7 is static relative to the hoistway at the moment, but the speed limiter 7 moves upwards relative to the car frame 1. Since the limit rail 4, the optical axis rail 5, and the compensating spring 6 are rigidly fixed to the car frame 1, the speed governor 7 moves upward along the optical axis rail 5 in the limit rail 4 to compress the compensating spring 6. Since the safety gear connecting rod 8 is rigidly fixed to the governor housing 7.2, the first connecting rod 8.1 and the second connecting rod 8.2 are driven to move upwards when the governor 7 moves upwards. The third link 8.3 will slide along the plane of the second link 8.2 while moving upwards. The third connecting rod 8.3 drives the safety gear trigger pull rod 9.2 to rotate upwards, so that the safety gear 9 acts to brake the elevator.

Claims (8)

1. The utility model provides a sedan-chair frame follow-up overspeed governor, includes sedan-chair frame (1) and steel wire tight device (3) that rises, its characterized in that, including speed limit part and safety part, the speed limit part is connected with safety part, the speed limit part includes overspeed governor (7), the overspeed governor sets up on sedan-chair frame (1), overspeed governor (7) include overspeed governor device (7.1) and overspeed governor casing (7.2), be equipped with a plurality of steel wire tight wheels (7.3) that rise in overspeed governor (7).

2. A car frame follow-up speed limiter according to claim 1, characterized in that the speed limiter device (7.1) is arranged in a speed limiter housing (7.2), and the wire rope tension sheave (7.3) is fixed around the speed limiter device (7.1).

3. The car frame follow-up speed limiter according to claim 1, characterized in that a speed-limiting steel wire rope (2) is arranged between the steel wire rope tension wheel (7.3) and the speed limiter device (7.1), and the speed-limiting steel wire rope (2) vertically penetrates through the steel wire rope tension wheel (7.3) and the speed limiter device (7.1).

4. The car frame follow-up speed limiter according to claim 1, characterized in that the speed limiting part further comprises a limiting rail (4), the limiting rail (4) is arranged above the speed limiter shell (7.2), an optical axis rail (5) is arranged in the limiting rail (4), and a compensating spring (6) is sleeved on the optical axis rail (5).

5. The car frame follow-up speed limiter according to claim 1, characterized in that the safety part comprises a safety gear pull rod (8) and a safety gear (9), the safety gear pull rod (8) comprises a first pull rod (8.1) and a third pull rod (8.3), a second pull rod (8.2) is arranged between the first pull rod (8.1) and the third pull rod (8.3), and the safety gear (9) comprises a safety gear trigger pull rod (9.2).

6. A cage follow-up speed limiter according to claim 5, characterized in that the first pull rod (8.1) is arranged on the bottom surface of the speed limiter housing (7.2), the second pull rod (8.2) is respectively connected with the first pull rod (8.1) and the third pull rod (8.3), and the safety gear trigger pull rod (9.2) is respectively connected with the third connecting rod (8.3) and the safety gear trigger pull rod (9.2).

7. The car frame follow-up speed limiter according to claim 3, wherein the speed limiter shell (7.2) is provided with holes at the upper end and the lower end, the speed limiting steel wire rope (2) penetrates through the holes and is arranged between the steel wire rope tension wheel (7.3) and the speed limiter device (7.1), the steel wire rope tension wheels (7.3) are arranged on the inner sides of the upper end and the lower end of the speed limiter shell (7.2), and the speed limiting steel wire rope (2) is pressed on the speed limiter device through the steel wire rope tension wheels (7.3) and is wound on the speed limiter device (7.1) for 180 degrees.

8. A car frame follow-up speed limiter according to claim 3, characterized in that the speed limiter housing (7.2) comprises a front end face and a rear end face, a steel wire rope tension wheel (7.3) and a speed limiter device (7.1) are arranged between the two end faces, a connecting piece is arranged between the two end faces, a steel wire rope tension wheel (7.3) is arranged between the connecting piece and the two end faces, the speed limiter steel wire rope (2) vertically passes through the speed limiter, and the speed limiter steel wire rope (2) is pressed on the speed limiter through the steel wire rope tension wheel (7.3).

Images