Valid

GB/T 34025-2017Pinion type progressive safety device for builders hoist (English PDF)

施工升降机用齿轮渐进式防坠安全器

Preview PDF

This is a limited preview

Buy now to download the full PDF (15 pages)

Need quotation for your management?

Get a formal quotation for GB/T 34025-2017 in 30 minutes.

Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

July 12, 2017

Implementation date

February 1, 2018

Scope

GB/T 34025-2017 is the English-translated version of 施工升降机用齿轮渐进式防坠安全器.

GB/T 34025-2017 is the Chinese national standard for the pinion type progressive safety device, the gear-driven progressive anti-fall device, of a builder's hoist.

It fixes the terms and definitions, the main parameters, the technical requirements, the requirements for use, the test methods, the inspection rules and the signs, marking, packaging and storage.

It applies to the gear type progressive safety device of construction lifts, other equipment using the same kind of device may refer to it, and it does not apply to safety devices manufactured before it came into force.

It defines the anti-fall or overspeed safety device as the mechanical device that stops the cage or the counterweight, called the protected object, and holds it there, and the progressive anti-fall or progressive overspeed safety device as the one whose initial braking force is adjustable and whose braking force rises gradually while the protected object is being brought to a stop.

It cites GB/T 1239.2, GB/T 1972, GB/T 3480.5, GB/T 13306, GB/T 13384, GB/T 23934, GB/T 23935, GB/T 26557-2011, ISO 6336-1 and ISO 6336-3. It was issued on 12 July 2017 and has applied since 1 February 2018.

Found what you need?

Document preview — GB/T 34025-2017

National Standard of the People's Republic of China

ICS: 91.140.90
Classification: J 80

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
1 Scope
2 normative reference document
3 Terms and definitions
4 main parameter
5 Technical requirements
6 Requirements
7 Test Method
8 Inspection rules
9 signs, marking, packaging and storage

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This standard specifies the terms and definitions and technical requirements for the use of gear progressive anti-fall safety devices for construction lifts (hereinafter referred to as "lifts"), Use requirements, test methods, inspection rules and signs, marking, packaging and storage.

This standard applies to the construction of the lift gear progressive safety device (hereinafter referred to as "safety device"), other equipment used in the same safety device Also refer to the use.

This standard does not apply to safety devices manufactured prior to the implementation of this standard.

2 Normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this document. For undated references, the latest edition (including all modifications) applies to this document.

GB/T 1239.2 Cold rolled cylindrical helical springs - Technical conditions - Part 2: Compression springs

GB/T 1972 disc spring

GB/T 3480.5 Calculation of carrying capacity of spur gears and helical gears - Part 5: Strength and quality of materials

GB/T 13306 signs

General specification for packaging of electromechanical products GB/T 13384

Technical condition of hot - rolled cylindrical helical compression spring GB/T 23934

Design Calculation of Cylindrical Helical Spring GB/T 23935

GB/T 26557-2011 hanging cage with vertical orientation of the dual-use construction of the lift

ISO 6336-1 Calculation of the carrying capacity of spur gears and helical gears - Part 1. Fundamentals, overviews and general effects coefficients (Calcula-tionofloadcapacityofspurandhelicalgears-Part 1. Basicprinciples, introductionandgeneralinflu-encefactors

ISO 6336-3 Spur gear and helical gear carrying capacity - Part 3. Calculation of tooth root bending strength (Calculationofload capacityofspurandhelicalgears-Part 3. Calculationoftoothbendingstrength)

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Anti - fall safety device

Overspeed safety device overspeedsafetydevice So that the speed of the cage or counterweight (hereinafter referred to as "protection target") to stop and maintain the state of the mechanical device.

3.2 Progressive anti-fall safety device

Progressive overspeed safety device progressiveoverspeedsafetydevice The initial braking force is adjustable, in the process of stopping the protection of the target braking force gradually increased safety device.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 6336-1 · ISO 6336-3

Similar standards

GB/T 24480-2026|GB/T 47932-2026|GB/T 18775-2025|GB/T 21739-2025|GB/T 30692-2025|GB/T 39679-2025

How to Download GB/T 34025-2017

1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.