17 replies to this topic

[Skiing#1]

I love to study the grips, and I saw the pictures of the grips (nice to see the close), but most grips are closed. I wonder is the top (a mobile jaw) or under something open? (see the second picture, top or bottom?).

Anyone, will you be willing to post the picture of the grip "open" (both top and bottom)? Or footage video how it opens and closes?

Attached File(s)

•  p_20sec4_20grip1_1_.jpg (105.2K)
  Number of downloads: 49
•  p_20sec4_20grip3_1_.jpg (44.09K)
  Number of downloads: 53

This post has been edited by Skiing#1: 05 November 2006 - 06:45 AM

[Lift Kid]

I made a little diagram of how the grip detaches. Basically the springs are compressed and the open the mobile jaw. Unfortunatly, I don't have footage or a picture of an open grip. I will look for something but the grips are only open for a very short amount of time while they detach from the cable. After that they close again (only on POMAs. Doppelmayrs lock open.) until they reattach to the cable. Also, here is a numered diagram of all the parts from POMAs website.


 p_sec4_grip_2.jpg (61.53K)
Number of downloads: 84

The grip is composed of the following elements:

► a fixed jaw,

► a mobile jaw (2), articulated with the fixed jaw and equipped with the depression roller (3),

► two coil springs (4) connecting the fixed and mobile jaw, acting directly against the mobile jaw as a lever, and pushing on the fixed jaw,

► two principal rollers (5) connected to the fixed jaw, to support the grip in the principal rails of the terminal,

► two flexible grip needles (6) (1).

► a flexible plastic grip tread plate (7) integral to the fixed jaw for the acceleration/deceleration as well as conveying of the vehicle by rubber tires in the terminals,

► a trumpet (8), between the hanger and the lateral roller (9) which stabilizes the grip in the terminals in the event of a loss of a lateral roller (9). The grip body axle connects the vehicle hanger, the fixed jaw (1) and the lateral roller (9)

Diagram:

 grip.jpg (154.01K)
Number of downloads: 25

I hope this will help you.

This post has been edited by Lift Kid: 05 November 2006 - 06:54 AM

[Skiing#1]

Lift Kid, I have seen names around the grips from Leitner Poma website and Skibachelor had footage video inside the terminal (a mobile jaw didn't show since the tires blocked the view of the mobile jaw). I just wanted to know about where the grips open and close. Thank you for showing the picture of the Diagram and explain how it opens and closes. I apprecaite it. I would see what it looks like "open" on the picture or footage. One more time...what called something under the mobile jaw. I show you the picture with red round.

Attached File(s)

•  red.JPG (8.69K)
  Number of downloads: 49

This post has been edited by Skiing#1: 05 November 2006 - 08:02 AM

[Lift Kid]

I am not sure as to what that peice is. John Holm (Liftmech) would most likely know from working on the Super Bee. Pretty much any mechanic who works on a lift with Omega T serries grips would have your answer.

[lastchair_44]

Lift Kid, on Nov 5 2006, 07:41 AM, said:

After that they close again (only on POMAs. Doppelmayrs lock open.) until they reattach to the cable. Also, here is a numered diagram of all the parts from POMAs website.
attachment

Garaventa CTEC's AK4.0 and AK4.1 also lock open while being conveyed through the terminal until they exit where they of course close and grip the rope again

[Skiing#1]

lastchair 44 thank you again. I apprecaite it. lastchair 44 and liftmech, do you have any picture or footage video to show the grip opens and closes?

This post has been edited by Skiing#1: 05 November 2006 - 02:09 PM

[liftmech]

There is a feature on the main page of the site describing the attach/detach process.
Detachable grip page
In a nutshell, all grips regardless of design are held closed on the rope by a spring force of some kind (coil springs, torsion bars, cupped washers, rubber 'marshmallow' springs). Upon entering the terminal, a roller on the end of the mobile jaw or lever linked to the jaw contacts an inclined ramp. As the grip moves forward, the downward ramp forces the grip open by compressing the springs. Once the grip is fully open, either the rope moves away from the grip via deflection sheaves or the grips moves away from the rope on an inclined ramp. The compression rail then changes angle and allows the grip to close again; or, in the case of Doppelmayr and CTEC grips, a secondary rail closes a lever allowing the grip to stay open until the other side of the terminal where the process is repeated in reverse.

BTW, Lift Kid- I work primarily on the Flyer (TB-style grips) and not the Bee. Not that it matters since the operating principle is the same on both Omega and TB grips.

[lastchair_44]

This is the best I could come up with right now. It's the Doppelmayr CTEC AGA 104 which is the coil spring grip offered on quad installations.

Attached File(s)

•  Our_pictures_027.jpg (673.36K)
  Number of downloads: 106

[Skiing#1]

Thank you for explaining and pictures. You all do your best to help, and I apprecaite it.

When the depression roller go down by the ramp (I have seen footage video inside the terminal by skibachelor) you means a mobile jaw or a fixed jaw moves out beside, not go up, right? What about under something or a piece moves away or stays as normal?

Attached File(s)

•  red1.JPG (23.38K)
  Number of downloads: 15

This post has been edited by Skiing#1: 05 November 2006 - 04:36 PM

[lastchair_44]

On all the grips I've torn down and re-built, the outer jaw is the fixed jaw and doesn't move. The inner jaw is the moveable/mobile jaw and opens to the outside away from the rope. (or beside the rope not up). And on the terminals I've messed with, there is either a 12mm translation meaning the grip moves away from the rope 12mm and the rope dives away at the same time. Or the grip moves 1/2" same as above.

[darkshark0159]

wow, this info is a great help to me since i'll be building a model hsq later this week. thnx!

[Skiing#1]

lastchair 44, I think I understand what you means. Look at the picture...the red cross is where the mobile jaw opens outside from the rope. Is that right? And it closes when it grips on the rope?

darkshark0159, when you finish to build a model lift, then will you post the picture? I love to see it. Good Luck!

Attached File(s)

•  red1.JPG (22.7K)
  Number of downloads: 22

This post has been edited by Skiing#1: 05 November 2006 - 06:42 PM

[SkiBachelor]

Garaventa AK400 Detachable Grip. It's very similar to the Poma Omega T-Grip. You should be able to see how it opens very easily in this picture which I believe is the exact same way the T-Grip.

[liftmech]

Cameron's right. The TB and Omega grips have a mobile jaw which opens toward the centreline of the lift. the fixed jaw is on the outside of the rope. On the other hand, the Doppelmary DS series (not sure about the DT) has the mobile jaw on the outside and the fixed on the inside.

[Skiing#1]

Thank you, everyone. When you plan to repair or climb into the terminal someday, do you mind to take a picture or footage video of the grip go open??? I will be apprecaite and I would like to see it.

This post has been edited by Skiing#1: 07 November 2006 - 09:13 AM

[Lift Dinosaur]

"One more time...what called something under the mobile jaw. I show you the picture with red round."
What you are seeing in the "red round" is the fixed jaw. I think what you are trying to see mentally can be explained in the attached drawing. #1 is the fixed jaw, #2 is the mobile jaw, #3 is the pivot axle, and #4 is the compression roller. The mobile jaw does not actually "move away", but rather pivots on the axle when the activation roller is pushed down towards the hanger hinge axle-#6. This causes the gap between the fixed jaw-#1 and the mobile jaw-#2 to become greater allowing for the rope to clear the grip. The rope then either drops away or the grip rises up on the track - as explained by liftmech.
Does this help?

Dino
 Omega_Grip.JPG (305.58K)
Number of downloads: 69

[Skiing#1]

I found a picture from the website, and an equipement opens the grip. I can see how it works. It is interesting.
 5_1_.jpg (28.29K)
Number of downloads: 67

darkshark0159, have you completely building a model hsq yet? I would like to see the picture of your model.

This post has been edited by Skiing#1: 19 August 2007 - 09:10 PM

[Lift Kid]

I guess I'm going to bring this back to the top!

I have a video of Poma TB grips re-attaching. Sorry for the slightly moving camera, it was windy today!

http://www.chairlift...com/TB_grip.mpg