A kind of oil sludge scraping mechanism of speed limiter rope wheel

Abstract

The utility model discloses a kind of oil sludge scraping mechanisms of speed limiter rope wheel, including speed limiter base, the middle part of speed limiter base is connected with speed limiter rope wheel, switch beating plate is equipped with in the radial outer side of speed limiter rope wheel, steel wire rope is connected with in speed limiter rope wheel through wire rope groove, the side of speed limiter base is equipped with the first opening for steel wire rope to pass through, scraper blade is connected with on the speed limiter base outside the first opening, scraper blade and switch beating plate are mutually staggered and set along the circumference of speed limiter rope wheel, one side of scraper blade is connected with scraper, scraper is located between speed limiter rope wheel and switch beating plate along the radial of speed limiter rope wheel, the number of scraper is two and symmetrically set in the two side edges of wire rope groove, the end of scraper extends to the outside of speed limiter rope wheel and has gap between speed limiter rope wheel.The utility model has the characteristics of good cleaning effect, long service life.

Description

Technical Field

[0001] This utility model relates to a speed limiter rope wheel, and more particularly to a mud scraping mechanism for a speed limiter rope wheel. Background Technology

[0002] The governor in an elevator system monitors the elevator's speed by rotating with the steel cable. When the elevator speed exceeds a threshold, posing a safety hazard, the governor mechanically locks the steel cable, achieving emergency braking. To further enable the governor's electrical braking function, manufacturers install a sling block outside the governor's sheave, rotating synchronously with it. When the governor's sheave speed exceeds the threshold, the sling block, under centrifugal force, overcomes the spring force and is thrown outwards, colliding with the governor's electrical switch plate on the outside. This switch plate then triggers a microswitch, disconnecting the elevator's safety circuit and de-energizing the brake.

[0003] However, the speed governor has a drawback in actual use: during elevator operation, the wire rope produces sludge, which continuously adheres to the speed governor pulleys on both sides of the wire rope. Furthermore, once the sludge on the pulley surface solidifies, subsequent sludge is further adhered to the outside of the solidified sludge under the pressure of the wire rope, causing the sludge on the speed governor pulley surface to expand radially outwards. This leads to a situation where, when the amount of sludge adhering to the speed governor pulley surface exceeds a certain limit, the adhered sludge expands to the contact switch, causing the brake to malfunction and affecting the normal operation of the elevator.

[0004] To address the aforementioned issues, manufacturers currently employ a solution of attaching a flexible brush or steel wool to the outside of the speed limiter sheave. This allows the brush or wool to rotate with the sheave, removing the sludge adhering to its surface. However, this cleaning method has drawbacks. Firstly, the brush's stiffness is insufficient compared to the speed limiter sheave itself, leading to wear and tear over time and reduced effectiveness in removing sludge. This also results in relatively poor stability and requires periodic replacement by the manufacturer. Secondly, the high adhesion strength of the hardened sludge makes it difficult for the flexible cleaning device to effectively remove it, thus diminishing the cleaning efficiency.

[0005] Therefore, existing devices for removing sludge adhering to the surface of the speed limiter pulley have problems such as poor removal effect and short service life. Utility Model Content

[0006] The purpose of this invention is to provide a sludge scraping mechanism for a speed limiter pulley. It features good cleaning effect and long service life.

[0007] The technical solution of this utility model is as follows: A sludge scraping mechanism for a speed limiter rope wheel includes a speed limiter base, a speed limiter rope wheel connected to the middle of the speed limiter base, a switch plate provided on the radially outer side of the speed limiter rope wheel, a wire rope connected to the speed limiter rope wheel via a wire rope groove, a first opening for the wire rope to pass through on one side of the speed limiter base, a sludge scraper connected to the speed limiter base outside the first opening, the sludge scraper and the switch plate being staggered relative to each other along the circumference of the speed limiter rope wheel, a scraper blade connected to one side of the scraper blade, the scraper blade being located radially between the speed limiter rope wheel and the switch plate, two scraper blades being symmetrically arranged on both sides of the wire rope groove, the ends of the scraper blades extending to the outer side of the speed limiter rope wheel and leaving a gap between them, the scraper blades being used to scrape off the sludge adhering to both sides of the wire rope groove and extending radially to the outer side of the speed limiter rope wheel.

[0008] In the aforementioned oil and mud scraping mechanism of a speed limiter rope wheel, the material of the scraper blade is thermoplastic polyurethane or polypropylene, and the scraper blade and the scraper blade are integrally formed.

[0009] In the aforementioned scraping mud mechanism of a speed limiter rope wheel, the scraper blade forms a groove on the side near the speed limiter rope wheel, and the scraper blades on both sides of the groove are bent outward to form scraper blades.

[0010] In the aforementioned speed limiter rope pulley's oil and mud scraping mechanism, a cleaning brush is connected to the scraper plate, and a second opening is provided in the middle of the cleaning brush for the steel wire rope to pass through.

[0011] In the aforementioned oil and mud scraping mechanism of a speed limiter rope wheel, the mud scraping plates on both sides of the cleaning brush are provided with mounting holes, and the mud scraping plates are bolted to the speed limiter base through the mounting holes.

[0012] In the aforementioned oil and mud scraping mechanism of a speed limiter rope wheel, one end of the mud scraper is formed into an inclined plate extending upward towards the speed limiter rope wheel, and the scraper blade is disposed at the end of the inclined plate.

[0013] Compared with the prior art, this utility model has the following characteristics: (1) Through the structural cooperation of the scraper blade and the scraper, this utility model can use the scraper to scrape off the sludge adhering to the surface of the speed limiter rope wheel and located on both sides of the wire rope groove, thereby effectively avoiding the possibility of the sludge contacting the switch and hitting the plate after expanding outward; on this basis, by limiting the structure of the scraper blade, it can be separated from the speed limiter rope wheel to prevent wear caused by friction between the scraper blade and the speed limiter rope wheel, thereby improving the structural stability and service life of the scraper blade; on the other hand, the scraper blade can also use hard materials and cut the sludge, thus effectively improving the removal effect of sludge on the surface of the speed limiter rope wheel compared with the existing flexible cleaning brush or steel wool. (2) By using the cleaning brush on the scraper plate, the sludge on the surface of the wire rope can be scraped off when the wire rope passes through, thereby reducing the sludge adhering to the surface of the wire rope and further improving the cleaning effect on the wire rope and the speed limiter pulley. (3) By limiting the shape and installation position of the scraper, on the one hand, the scraper can clean the speed limiter pulley and the wire rope at the same time, and on the other hand, it can keep the scraper away from the wire rope, thereby ensuring the stability of the operation of both. Therefore, this utility model has the characteristics of good cleaning effect and long service life. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model from another direction; Figure 3 This is a diagram of the shape of a mud scraper.

[0015] The markings in the attached diagram are: 1-speed limiter base, 2-speed limiter rope pulley, 3-switch plate, 4-wire rope, 5-scraper, 6-scraper blade, 7-cleaning brush, 8-mounting hole, 9-sloping plate. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0017] Example. A mud scraping mechanism for a speed limiter pulley, configured as follows: Figure 1 As shown, the device includes a speed limiter base 1, a speed limiter pulley 2 connected to the middle of the speed limiter base 1, a switch plate 3 on the radially outer side of the speed limiter pulley 2, a wire rope 4 connected to the speed limiter pulley 2 via a wire rope groove, a first opening for the wire rope 4 to pass through on one side of the speed limiter base 1, a scraper 5 detachably connected to the speed limiter base 1 outside the first opening, the scraper 5 and the switch plate 3 being staggered relative to each other along the circumference of the speed limiter pulley 2, a scraper blade 6 connected to one side of the scraper 5, the scraper blade 6 being located radially between the speed limiter pulley 2 and the switch plate 3, two scraper blades 6 being symmetrically arranged on both sides of the wire rope groove, the ends of the scraper blades 6 extending to the outer side of the speed limiter pulley 2 and leaving a gap between them, the scraper blades 6 being used to scrape off the sludge adhering to both sides of the wire rope groove and extending radially to the outer side of the speed limiter pulley 2.

[0018] The end of the scraper 6 is formed with an arc surface for removing sludge.

[0019] The scraper blade 5 is made of TPU thermoplastic polyurethane or PP polypropylene, and the scraper 6 and the scraper blade 5 are integrally formed.

[0020] The scraper 5 has a groove on the side near the speed limiter sheave 2. The scraper 5 on both sides of the groove is bent outward to form scraper blades 6. A gap is left between the inner end face of the groove and the outer wall of the speed limiter sheave 2.

[0021] The scraper 5 is connected to a cleaning brush 7. The cleaning brush 7 has a second opening in the middle for the steel wire rope 4 to pass through. The second opening and the first opening are distributed vertically and are interconnected.

[0022] The cleaning brush 7 includes a fixing ring glued to the scraper plate 5. The top of the fixing ring has several bristles distributed in a ring shape. The inner end of each bristle faces the center point of the fixing ring and forms a second opening for the steel wire rope 4 to pass through, so that the oil and sludge on its surface can be removed by the bristles when the steel wire rope passes through.

[0023] The cleaning brush 7 has elongated mounting holes 8 on both sides of the scraper blades 5, and the scraper blades 5 are bolted to the speed limiter base 1 through the mounting holes 8.

[0024] One end of the scraper 5 forms an inclined plate 9 that extends upward toward the speed limiter sheave 2. The inclined plate 9 is located below the speed limiter sheave 2 along the circumference of the speed limiter sheave 2. The scraper blade 6 is disposed at the end of the inclined plate 9, and the length direction of the scraper blade 6 is tangent to the circumference of the speed limiter sheave 2.

[0025] The working principle of this utility model is as follows: When installing, this utility model is symmetrically arranged on both sides of the bottom of the speed limiter base 1, so that when the wire rope is running, it first passes vertically upward through the mud scraper 5 on one side and enters the speed limiter rope wheel 2, and then extends out from the speed limiter rope wheel 2 and goes vertically downward through the mud scraper 5 on the other side.

[0026] When the wire rope passes through the scraper plate 5, the cleaning brush 7 at the scraper plate 5 cleans the inner side of the wire rope, removing the oil and sludge adhering to the surface of the wire rope and improving its cleanliness. Simultaneously, one end of the scraper plate 5 extends radially outward to the speed limiter pulley 2 and scrapes off the oil and sludge adhering to both sides of the speed limiter pulley 2 via the scraper blade 6. The grooved portion of the scraper plate 5 also scrapes off the oil and sludge extending to the outside of the wire rope groove, effectively preventing the oil and sludge adhering to the surface of the speed limiter pulley 2 from continuously extending outward and contacting the switch plate 3, thus improving the operational stability of the speed limiter.

Claims

1. A sludge scraping mechanism for a speed limiter pulley, comprising a speed limiter base (1), a speed limiter pulley (2) connected to the middle of the speed limiter base (1), a switch plate (3) provided on the radially outer side of the speed limiter pulley (2), a wire rope (4) connected to the speed limiter pulley (2) via a wire rope groove, and a first opening provided on one side of the speed limiter base (1) for the wire rope (4) to pass through, characterized in that: A scraper (5) is connected to the speed limiter base (1) on the outside of the first opening. The scraper (5) and the switch plate (3) are staggered around the speed limiter rope wheel (2). A scraper (6) is connected to one side of the scraper (5). The scraper (6) is located between the speed limiter rope wheel (2) and the switch plate (3) along the radial direction of the speed limiter rope wheel (2). There are two scrapers (6) and they are symmetrically arranged on both sides of the wire rope groove. The end of the scraper (6) extends to the outside of the speed limiter rope wheel (2) and leaves a gap between it and the speed limiter rope wheel (2). The scraper (6) is used to scrape off the sludge that adheres to both sides of the wire rope groove and extends radially to the outside of the speed limiter rope wheel (2).

2. The oil and mud scraping mechanism of the speed limiter rope pulley according to claim 1, characterized in that: The material of the scraper blade (5) is thermoplastic polyurethane or polypropylene, and the scraper blade (6) and the scraper blade (5) are integrally formed.

3. The oil scraping mechanism of the speed limiter rope pulley according to claim 2, characterized in that: The scraper (5) forms a groove on the side near the speed limiter pulley (2), and the scraper (5) on both sides of the groove bends outward to form scraper blades (6).

4. The oil and mud scraping mechanism of the speed limiter rope pulley according to claim 1, characterized in that: The scraper (5) is connected to a cleaning brush (7), and the cleaning brush (7) has a second opening in the middle for the steel wire rope (4) to pass through.

5. The oil scraping mechanism of the speed limiter rope pulley according to claim 4, characterized in that: The cleaning brush (7) has mounting holes (8) on the scraper blades (5) on both sides, and the scraper blades (5) are bolted to the speed limiter base (1) through the mounting holes (8).

6. The oil and mud scraping mechanism of the speed limiter rope pulley according to claim 1, characterized in that: One end of the scraper (5) forms an inclined plate (9) that extends upward toward the speed limiter pulley (2), and the scraper blade (6) is disposed at the end of the inclined plate (9).

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