CN218174306U

CN218174306U - Overspeed device tensioner

Info

Publication number: CN218174306U
Application number: CN202222095499.1U
Authority: CN
Inventors: 秦宇杰; 彭浪草; 曾塬; 张翀; 赖思稳; 胡盛敏; 黄畅; 余宋大; 雷鹏; 黄斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-09
Filing date: 2022-08-09
Publication date: 2022-12-30
Anticipated expiration: 2032-08-09

Abstract

The utility model discloses a overspeed device tensioner belongs to elevator technical field. The device includes leading truck and counter weight mechanism, be equipped with many guide bars on the leading truck side by side, many equal movable sleeve is equipped with on the guide bar and prevents jumping the subassembly, counter weight mechanism and many guide bar swing joint to be located the downside of preventing jumping the subassembly, prevent jumping the subassembly and for preventing jumping the spring. The anti-bouncing spring is directly sleeved on the guide rod, a positioning rod in the prior art is omitted, the structure of the tensioning device is simplified, a sufficient moving space is reserved for the speed limiter steel wire rope, the friction and abrasion caused by long-term contact of the speed limiter steel wire rope with the anti-bouncing spring and the top of the guide frame are avoided, and the service life of the speed limiter steel wire rope is prolonged.

Description

Overspeed device tensioner

Technical Field

The utility model relates to a overspeed device tensioner belongs to elevator technical field.

Background

Traditional overspeed governor overspeed device tensioner has two kinds: one type is a pendulum type, namely, the tension of a tension pulley is realized by tensioning a steel wire rope through a weight block of the pendulum type; the other type is a weight drop-down type, namely a cast piece which is integrally cast is directly fixed under the guide pulley. However, these two overspeed governor tensioners are applied to a high-speed elevator, and even if the elevator is tensioned by gravity during high-speed operation, the elevator may sway irregularly in the horizontal direction, in the front and back directions, and at the same time, the elevator may vibrate in a small amplitude during normal operation in the vertical direction, and noise of the elevator or resonance with the car may be caused during normal operation, and in an emergency braking condition of the elevator, the horizontal displacement amplitude generated by the overspeed governor tensioner may be rapidly increased, thereby easily causing slackening and groove separation of the steel wire rope.

Therefore, chinese patent publication No. CN211393446U discloses a tensioning device for an elevator governor, in which an inner frame is limited by guide shoes, and the inner frame is made to reciprocate vertically along the vertical direction of an outer frame, so as to prevent the inner frame from displacing in the horizontal direction, thereby solving the technical problem that the displacement amplitude in the horizontal direction generated by the tensioning device of the governor becomes large, which causes the steel wire rope to loosen and to come off the groove.

Install a plurality of elastic components and locating lever between counter weight unit top and frame top among this overspeed device tensioner, the installation of a plurality of elastic components and locating lever can occupy more space, the activity space that leads to the rope obviously reduces, in overspeed device tensioner operation in-process, the rope of guide pulley both sides is not keeping vertical unchangeable, but can relative frame swing at certain angle within range, receive the little influence of rope activity space, the rope can with the through-hole inner wall at frame top or keep in contact and the looks friction with the elastic component for a long time, further accelerated the wearing and tearing speed of rope, lead to its life to shorten. In addition, the installation of the elastic element and the positioning rod increases the structural complexity of the tensioning device.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a overspeed device tensioner.

The utility model discloses a following technical scheme can realize:

the utility model provides a overspeed device tensioner, includes leading truck and counter weight mechanism, be equipped with many guide bars on the leading truck side by side, many equal movable sleeve is equipped with prevents jumping the subassembly on the guide bar, counter weight mechanism and many guide bar swing joint to be located the downside of preventing jumping the subassembly, prevent jumping the subassembly for preventing jumping the spring.

The anti-bouncing assembly further comprises a limiting ring, a shaft shoulder A is arranged on the guide rod, the anti-bouncing spring and the limiting ring are movably sleeved on the guide rod, one end of the anti-bouncing spring is abutted against the guide frame, and the other end of the anti-bouncing spring pushes the limiting ring to be abutted against the shaft shoulder A.

The counterweight mechanism is positioned on the inner side of the guide frame, and two elongated holes A are formed in the top of the guide frame.

The counterweight mechanism comprises a tensioning frame, a rope pulley and a counterweight block, the tensioning frame is connected with the guide rods in a sliding manner, the rope pulley and the counterweight block are movably arranged on the tensioning frame, and the counterweight block is positioned below the rope pulley.

The tensioning frame comprises two stand columns which are arranged side by side, the upper portions of the two stand columns are connected through a protective cover, the lower portions of the two stand columns are connected through two supporting plates, limiting plates or linear bearings are arranged at two ends of each stand column, limiting notches are formed in the limiting plates, and two elongated holes B are formed in the protective cover.

The upright posts are channel steel or I-steel.

The inside of stand is equipped with diaphragm and fastening bolt, and fastening bolt and diaphragm threaded connection.

Two connecting plates are arranged on the tensioning frame side by side, and one end, far away from the tensioning frame, of each connecting plate is provided with a plurality of elongated holes C.

The balancing weight comprises a plurality of balancing weight plates which are stacked together, and the balancing weight plates are in a cross shape.

The bottom of the counterweight mechanism is provided with a safety switch striking plate, a safety switch is arranged on the guide frame at a position corresponding to the safety switch striking plate, and the safety switch is positioned below the safety switch striking plate.

The beneficial effects of the utility model reside in that: the anti-bouncing spring is directly sleeved on the guide rod, a positioning rod in the prior art is omitted, the structure of the tensioning device is simplified, sufficient moving space is reserved for the speed limiter steel wire rope, the speed limiter steel wire rope is prevented from being in long-term contact with the anti-bouncing spring and the top of the guide frame to cause friction and abrasion, and the service life of the speed limiter steel wire rope is prolonged.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1-an anti-bouncing spring, 2-a guide frame, 3-a rope wheel, 4-a guide rod, 5-a safety switch striking plate, 6-a safety switch, 7-a balancing weight, 8-a protective cover, 9-a connecting plate, 10-a transverse plate, 11-a fastening bolt and 12-a limiting ring.

Detailed Description

The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.

As shown in fig. 1, a overspeed governor overspeed device tensioner, including leading truck 2 and counter weight mechanism, install two guide bars 4 on the leading truck 2 side by side, two equal movable sleeve is equipped with prevents jumping the subassembly on the guide bar 4, counter weight mechanism and two guide bar 4 swing joint to be located the downside of preventing jumping the subassembly, prevent jumping the subassembly for preventing jumping spring 1. When the speed limiter is used, the counterweight mechanism is in sliding connection with the two guide rods 4, so that the counterweight mechanism can only slide along the guide rods 4 in a vertical plane, and the speed limiter steel wire rope can be tensioned. Under the working condition of emergency braking of the elevator, the anti-jump spring 1 absorbs impact energy in an energy absorption mode of compression and release, and can limit the emergency upward jump of the counterweight mechanism in the vertical direction; meanwhile, under the normal working condition of the elevator, the vertical jumping of the counterweight mechanism can be slowed down, so that the small vertical jumping of the rope wheel 3 in the running process of the elevator is overcome. Meanwhile, the anti-jump spring 1 tensions the speed governor steel wire rope through the tensioning frame and the rope pulley 3, so that the speed governor steel wire rope is prevented from being separated from the rope pulley 3 due to excessive loosening when the safety tongs act. This application will prevent that jump spring 1 is direct suit to guide bar 4 on to the locating lever among the prior art has been saved, has both helped simplifying overspeed device tensioner's structure, has reserved sufficient activity space for overspeed governor wire rope again, avoids overspeed governor wire rope and prevents jump spring 1, 2 top long-term contact of leading truck and frictional wear, helps prolonging overspeed governor wire rope's life.

The anti-bouncing assembly further comprises a limiting ring 12, a shaft shoulder A is processed on the guide rod 4, the anti-bouncing spring 1 and the limiting ring 12 are movably sleeved on the guide rod 4, one end of the anti-bouncing spring 1 is abutted against the guide frame 2, and the other end of the anti-bouncing spring pushes the limiting ring 12 to be abutted against the shaft shoulder A. When in use, the limiting ring 12 is connected with the guide rod 4 in a sliding way, and the anti-jump spring 1 is limited on the upper part of the guide rod 4 through the limiting ring 12 and the shaft shoulder A and is kept in contact with the guide frame 2.

The counterweight mechanism is positioned on the inner side of the guide frame 2, and two elongated holes A are processed at the top of the guide frame 2. And (3) processing the elongated hole A, reserving a space for the swing of the speed governor steel wire rope in a certain range, and avoiding the friction and abrasion caused by the long-term contact between the speed governor steel wire rope and the top of the guide frame 2.

The counterweight mechanism comprises a tensioning frame, a rope wheel 3 and a counterweight 7, the tensioning frame is connected with the two guide rods 4 in a sliding mode, the rope wheel 3 and the counterweight 7 are movably mounted on the tensioning frame, and the counterweight 7 is located below the rope wheel 3. When the rope wheel is used, the middle shaft is coaxially arranged on the rope wheel 3, and the two ends of the middle shaft are rotatably connected with the protective cover 8. The balancing weight 7 is connected with the upright column in a sliding way.

The tensioning frame includes two stands of arranging side by side, and the upper portion of two stands is connected through protection casing 8, and the lower part is connected through two backup pads, and limiting plate or linear bearing are all installed at the both ends of stand, and processing has spacing notch on the limiting plate, and processing has two trompil holes B on the protection casing 8. When in use, the upright post is connected with the guide rod 4 in a sliding way through a limiting plate or a linear bearing. Processing trompil hole B on the protection casing 8, reserve the space for the swing of overspeed governor wire rope in certain extent, avoid overspeed governor wire rope and protection casing 8 to keep in contact for a long time and frictional wear.

The upright posts are channel steel or I-steel.

And a transverse plate 10 and a fastening bolt 11 are installed on the inner side of the upright column, and the fastening bolt 11 is in threaded connection with the transverse plate 10. When the counterweight block is used, the transverse plate 10 and the fastening bolts 11 are located on the upper side of the counterweight block 7, and after the counterweight block 7 is installed in place, the counterweight block 7 is locked and fixed through the fastening bolts 11, so that the counterweight block 7 is prevented from sliding up and down along the upright column.

Two connecting plates 9 are welded on the tensioning frame side by side, and a plurality of elongated holes C are machined in one end, far away from the tensioning frame, of each connecting plate 9. When the tension device is used, one end of the connecting plate 9, which is far away from the tension frame, can be fixedly arranged on the car guide rail through the pressure plate and the like, so that the tension device has the advantage of convenience in installation.

The balancing weight 7 comprises a plurality of weight plates which are stacked together, and the weight plates are in a cross shape. When using, in two stands can be gone into to the one-to-one card in the both ends of counterweight plate, counterweight 7 adopts polylith counterweight plate to pile up and forms, conveniently adjusts counterweight 7's weight as required to when the elevator is descending or tow the wire rope fracture at the hypervelocity, reliably move for the safety tongs and provide effectual pulling force.

Safety switch beater 5 is installed to counter weight mechanism's bottom, installs safety switch 6 on the leading truck 2 in the position corresponding with safety switch beater 5, and safety switch 6 is located the below of safety switch beater 5. When the steel wire rope of the speed limiter is excessively stretched or broken, the safety switch beating plate 5 moves downwards to trigger the safety switch 6, the safety switch 6 transmits a stop signal to the control system, the control system sends an instruction to stop the elevator, and maintenance personnel are reminded to timely handle the stretching or breaking fault of the steel wire rope of the speed limiter.

Claims

1. A overspeed governor overspeed device tensioner which characterized in that: including leading truck (2) and counter weight mechanism, be equipped with many guide bar (4) on leading truck (2) side by side, many equal movable sleeve is equipped with on guide bar (4) and prevents jumping the subassembly, counter weight mechanism and many guide bar (4) swing joint to be located the downside of preventing jumping the subassembly, prevent jumping the subassembly for preventing jumping spring (1).

2. The governor tensioning device of claim 1, wherein: prevent jumping the subassembly and still include spacing ring (12), be equipped with shaft shoulder A on guide bar (4), prevent jumping spring (1) and spacing ring (12) equal activity suit on guide bar (4), prevent that the one end of jumping spring (1) supports and leans on leading truck (2), and the other end pushes away spacing ring (12) and supports and leans on shaft shoulder A.

3. The governor tensioning device of claim 1, wherein: the counterweight mechanism is positioned on the inner side of the guide frame (2), and two elongated holes A are formed in the top of the guide frame (2).

4. A governor tensioning device as defined in claim 1 or 3, characterised in that: the counterweight mechanism comprises a tensioning frame, a rope wheel (3) and a counterweight block (7), the tensioning frame is connected with the guide rods (4) in a sliding mode, the rope wheel (3) and the counterweight block (7) are movably arranged on the tensioning frame, and the counterweight block (7) is located below the rope wheel (3).

5. The governor tensioning device of claim 4, wherein: the tensioning frame comprises two upright columns which are arranged side by side, the upper parts of the two upright columns are connected through a protective cover (8), the lower parts of the two upright columns are connected through two supporting plates, limiting plates or linear bearings are arranged at two ends of each upright column, and limiting notches are formed in the limiting plates; two elongated holes B are arranged on the protective cover (8).

6. The governor tensioning device of claim 5, wherein: the upright posts are channel steel or I-steel.

7. The governor tensioning device of claim 6, wherein: the inner side of the upright post is provided with a transverse plate (10) and a fastening bolt (11), and the fastening bolt (11) is in threaded connection with the transverse plate (10).

8. The governor tensioning device of claim 4, wherein: two connecting plates (9) are arranged on the tensioning frame side by side, and one end, far away from the tensioning frame, of each connecting plate (9) is provided with a plurality of elongated holes C.

9. The governor tensioning device of claim 4, wherein: the balancing weight (7) comprises a plurality of balancing weight plates which are stacked together, and the balancing weight plates are in a cross shape.

10. The governor tensioning device of claim 1, wherein: the bottom of the counterweight mechanism is provided with a safety switch striking plate (5), a safety switch (6) is arranged on the guide frame (2) at a position corresponding to the safety switch striking plate (5), and the safety switch (6) is positioned below the safety switch striking plate (5).