CN210635574U

CN210635574U - Elevator buffer

Info

Publication number: CN210635574U
Application number: CN201921648674.7U
Authority: CN
Inventors: 达文朋; 舒佳乐; 叶辉
Original assignee: Ningbo Aodepu Elevator Components Co ltd
Current assignee: Ningbo Aodepu Elevator Components Co ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-05-29
Anticipated expiration: 2029-09-29

Abstract

The utility model discloses an elevator buffer, including cylinder body (1), plunger (2), spring (3), first end cover (4) and second end cover (5), the one end sliding connection of plunger (2) is in cylinder body (1), spring (3) cover is outside plunger (2), the top outside at plunger (2) is fixed in first end cover (4), the bottom outside at plunger (2) is fixed in second end cover (5), the terminal surface that the lateral wall of plunger (2) is stretched out to the one end of spring (3) and first end cover (4) offsets its characterized in that: the cylinder body (1) is located the one end of connecting plunger (2) and still is equipped with closing cap (6) that are the cylinder, closing cap (6) are fixed with cylinder body (1) flange joint, the hole activity embedding that closing cap (6) were passed to the bottom of plunger (2) is in cylinder body (1). This elevator buffer increases plunger radial spacing nature and overall stability, and intensity is better.

Description

Elevator buffer

Technical Field

The utility model relates to an elevator spare part technical field specifically says to an elevator buffer.

Background

The elevator buffer is the last protective screen of elevator safety, and when the elevator runs out of control and collides with the pit, the buffer absorbs or consumes the impact energy of elevator decline, makes the car slow down the buffering stop on the buffer, divides energy storage formula buffer and energy dissipation formula buffer.

Current elevator buffer includes cylinder body, plunger, spring, first end cover and second end cover, the one end sliding connection of plunger is in the cylinder body, the spring housing is outside the plunger, first end cover is fixed in the top outside of plunger, the bottom outside at the plunger is fixed to the second end cover, the one end of spring offsets with the terminal surface that first end cover stretches out the lateral wall of plunger, the other end of spring offsets with the terminal surface that the second end cover stretches out the lateral wall of plunger. Radial spacing direct bottom plate through the plunger bottom between present plunger and the cylinder body is connected with the cylinder body, and when the plunger rose the highest position, the bottom of plunger was located the top of cylinder body, and whole plunger only relies on the bottom radially and axially spacing this moment to make the stability of plunger relatively poor, the condition that exists the atress and rock appears.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an increase radial spacing nature of plunger and overall stability, and the better elevator buffer of intensity.

The technical scheme of the utility model is that, an elevator buffer with following structure is provided, including cylinder body, plunger, spring, first end cover and second end cover, one end sliding connection of plunger is in the cylinder body, the spring cover is outside the plunger, first end cover fixes in the top outside of plunger, the second end cover fixes in the bottom outside of plunger, the one end of spring offsets with the terminal surface that first end cover stretches out the lateral wall of plunger, the other end of spring offsets with the terminal surface that second end cover stretches out the lateral wall of plunger; the method is characterized in that: the cylinder body is located the one end of connecting the plunger and still is equipped with the closing cap that is the cylinder, the closing cap is fixed with cylinder body flange joint, the hole activity embedding that the bottom of plunger passed the closing cap is in the cylinder body.

The bottom of the sealing cover is embedded into the step hole of the cylinder body and is limited axially downwards.

The bottom of the plunger is provided with an annular bulge, and the top end face of the annular bulge is abutted to the bottom end face of the sealing cover.

The bottom of the sealing cover embedded in the cylinder body is positioned below the flange connecting part.

The inner wall of the sealing cover is provided with a first annular groove, the first annular groove is provided with a first sealing ring, and the first sealing ring is tightly attached to the outer wall of the plunger.

The outer wall of the bottom of the sealing cover embedded into the cylinder body is provided with a second annular groove, the second annular groove is provided with a second sealing ring, and the second sealing ring is tightly attached to the inner wall of the cylinder body.

The height of the cover is one third to one fourth of the height of the plunger.

After the structure more than adopting, the utility model has the advantages of it is following: the sealing cover is added, so that the sealing cover is fixed with the cylinder body, and the plunger is embedded into the cylinder body in a manner that the bottom of the plunger penetrates through the inner hole of the plunger, so that the plunger plays roles of radial guiding and axial limiting while the plunger is radially guided by the original cylinder body, and the radial limiting performance and the overall stability of the plunger are improved, and the strength is better.

As an improvement, the bottom of the sealing cover is embedded into the step hole of the cylinder body and is limited in the axial direction downwards, so that the connecting strength of the sealing cover and the cylinder body is better.

As an improvement, the bottom of the plunger is provided with an annular bulge, the top end face of the annular bulge is abutted against the bottom end face of the sealing cover, and axial limiting performance is improved.

As an improvement, the bottom of the sealing cover embedded in the cylinder body is positioned below the flange connecting part, so that the connecting strength of the sealing cover and the flange is increased.

As an improvement, the inner wall of the sealing cover is provided with a first annular groove, the first annular groove is provided with a first sealing ring, and the first sealing ring is tightly attached to the outer wall of the plunger piston, so that the sealing effect is improved.

As the improvement, the outer wall of the bottom of the sealing cover embedded in the cylinder body is provided with a second annular groove, the second annular groove is provided with a second sealing ring, and the second sealing ring is tightly attached to the inner wall of the cylinder body, so that the sealing effect is improved.

As an improvement, the height of the cover is one third to one fourth of the height of the plunger, and the cover has enough guidance for the plunger.

Drawings

Fig. 1 is a schematic structural view of an elevator buffer according to the present invention.

Fig. 2 is a schematic sectional view taken along line a-a of fig. 1.

Fig. 3 is an enlarged schematic view of a portion B of fig. 2.

Shown in the figure: 1. the cylinder body, 2, plunger, 2.1, annular bulge, 3, spring, 4, first end cover, 5, second end cover, 6, closing cap, 6.1, first ring channel, 6.2, second ring channel, 7, first sealing washer, 8, second sealing washer.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1-3, the utility model discloses an elevator buffer, including cylinder body 1, plunger 2, spring 3, first end cap 4 and second end cover 5, the one end sliding connection of plunger 2 is in cylinder body 1, the spring 3 cover is outside plunger 2, first end cap 4 is fixed in the top outside of plunger 2, second end cap 5 is fixed in the bottom outside of plunger 2, the terminal surface that the lateral wall of plunger 2 was stretched out to the one end of spring 3 and first end cap 4 offsets, the other end of spring 3 offsets with the terminal surface that second end cap 5 stretched out the lateral wall of plunger 2.

The cylinder body 1 is located the one end of connecting plunger 2 and still is equipped with the closing cap 6 that is the cylinder, closing cap 6 is fixed with 1 flange joint of cylinder body, the bottom of closing cap 6 is equipped with the step bulge loop, and cylinder body 1 also is equipped with the step bulge loop, and a plurality of bolts pass the through-hole of upper and lower step bulge loop and then fixed with the nut, and bolt and nut are along circumference evenly distributed.

The bottom of the plunger 2 passes through the inner hole of the sealing cover 6 and is movably embedded in the cylinder body 1. The bottom of the cover 6 embedded in the cylinder 1 is located below the flange connection.

The bottom of the sealing cover 6 is embedded into the step hole of the cylinder body 1 and is axially limited downwards, the sealing cover 6 is fixed with the cylinder body 1 through a flange, and is limited through the step hole of the bottom embedded into the cylinder body 1, so that the connecting strength of the sealing cover and the cylinder body is greatly increased.

The bottom of the plunger 2 is provided with an annular bulge 2.1, and the top end face of the annular bulge 2.1 is abutted against the bottom end face of the sealing cover 6, so that the plunger 2 is prevented from being completely separated from the cylinder body 1.

The inner wall of closing cap 6 is equipped with first ring channel 6.1, first ring channel 6.1 is equipped with first sealing washer 7, first sealing washer 7 is hugged closely with the outer wall of plunger 2, has increased the leakproofness of the inner wall of closing cap 6 and the outer wall of plunger 2.

The outer wall of the bottom of the sealing cover 6 embedded in the cylinder body 1 is provided with a second annular groove 6.2, the second annular groove 6.2 is provided with a second sealing ring 8, the second sealing ring 8 is tightly attached to the inner wall of the cylinder body 1, and the sealing performance of the outer wall of the sealing cover 6 and the inner wall of the cylinder body 1 is improved.

The cover 6 has a height of one third to one fourth of the plunger 2 and a length sufficient to ensure stability of the plunger 2.

Claims

1. An elevator buffer comprises a cylinder body (1), a plunger (2), a spring (3), a first end cover (4) and a second end cover (5), wherein one end of the plunger (2) is connected in the cylinder body (1) in a sliding mode, the spring (3) is sleeved outside the plunger (2), the first end cover (4) is fixed on the outer side of the top of the plunger (2), the second end cover (5) is fixed on the outer side of the bottom of the plunger (2), one end of the spring (3) abuts against the end face, extending out of the outer side wall of the plunger (2), of the first end cover (4), and the other end of the spring (3) abuts against the end face, extending out of the outer side wall of the plunger (2), of the second end cover (5); the method is characterized in that: the cylinder body (1) is located the one end of connecting plunger (2) and still is equipped with closing cap (6) that are the cylinder, closing cap (6) are fixed with cylinder body (1) flange joint, the hole activity embedding that closing cap (6) were passed to the bottom of plunger (2) is in cylinder body (1).

2. An elevator buffer as defined in claim 1, wherein: the bottom of the sealing cover (6) is embedded into a step hole of the cylinder body (1) and is limited axially downwards.

3. An elevator buffer as defined in claim 1, wherein: the bottom of plunger (2) is equipped with annular bulge (2.1), the top terminal surface of annular bulge (2.1) offsets with the bottom terminal surface of closing cap (6).

4. An elevator buffer as defined in claim 2, wherein: the bottom of the sealing cover (6) embedded in the cylinder body (1) is positioned below the flange connecting part.

5. An elevator buffer as defined in claim 1, wherein: the inner wall of closing cap (6) is equipped with first ring channel (6.1), first ring channel (6.1) are equipped with first sealing washer (7), first sealing washer (7) are hugged closely with the outer wall of plunger (2).

6. An elevator buffer as defined in claim 1, wherein: the outer wall of the bottom of the sealing cover (6) embedded in the cylinder body (1) is provided with a second annular groove (6.2), the second annular groove (6.2) is provided with a second sealing ring (8), and the second sealing ring (8) is tightly attached to the inner wall of the cylinder body (1).

7. An elevator buffer as defined in claim 1, wherein: the height of the cover (6) is one third to one fourth of the height of the plunger (2).