3t Construction Machinery Tower Crane (QTZ31.5)
Product Specifications
| Prod Model: |
QTZ31.5 |
| Markets: |
North America,South America,Eastern Europe,Southeast Asia,Africa,Mid East,Eastern Asia,Western Europe |
| Color: |
Red/Blue/Yellow/Orange |
| Max. Radius: |
42m |
| Free Standing Height: |
29m |
| Attached Height: |
80m |
| Max.Lifting Load: |
3t |
| Tip Load: |
0.7t |
| Total Power: |
23.7kw |
| Mast Section: |
1.5mx1.5mx2.2m |
| Rated Lifting Monent: |
315kn. M |
| Warranty: |
1 Year |
| Type: |
Tower Crane |
| Application: |
Construction Usage |
| Power Source: |
Hydraulic |
| Sling Type: |
Wire Rope |
| Certification: |
CE |
| Condition: |
New |
Product Description
3t construction machinery Tower Crane (QTZ31.5)Main Features of QTZ31.5 Tower Crane1. QTZ31.5 tower crane is the horizontal arm frame\trolley\rotary hydraulic lifting crane.
2. Max. Radius is 42m
Free standing height is 29m
Attached height is 80m
Rated Lifting Moment: 315KN. M
Rated Loading Capacity: 0.7t
Max. Lifting Load: 3t
Performance: Excellent and reliable
Mast section: 1.5mX1.5mX2.2m
Application: All kinds of demands
3. This crane adopt Advanced specification, reliable performance, good looks, reasonable price and advanced safety features, also is the ideal construction machinery of Small and medium-sized construction enterprise.

Type parameter | | QTZ31.5(TC4207) |
| Rated lifting moment | KN. m | 315 |
| Max. lifting load | t | 3 |
| Working radius | m | 2.5~42 |
| Tip load | t | 0.7 |
| Hoisting height | Independent | m | 30 |
| Attached | m | 80 |
| Hoisting speed | m/min | 60/30/5.4 |
| Trolleying speed | m/min | 22/44 |
| Slewing speed | r/min | 0.7 |
| Climbing speed | m/min | 0.6 |
| Structure self-weight | t | 18 |
| Total installed capacity | Kw | 23.7 |
| Balance weight | t | 6.8 |
| Allowed temperature | ° C | -20~40 |
| Working voltage | v | 380± 5% |
| Max. working wind pressure | N/m² | 250 |
Compondents details 1.Electrical mechanism
Our company use France Schneider contactor& tests each hoisting mechanism
under no-load, static load, dynamic load, etc.
To ensure the brake reliable, safe and durable.
2.Hoist mechanism
Brake wheel adopts cast steel materials,surface quenching and external circular,control the beating degree strictly .at the same time ,also carrying on balance tests.
each hoisting mec-hanism is carrying on noload ,static load ,dynamic load
and so on,guarantee the reliability, safety and durableness.
3.Derricking mechanism
Derricking mechanism with free maintenance planetary reducer and cone brake motor ,is well-knit in structure,stable and powerful in trolley ,high endurance
and low failure rate.
4.Slewing mechanism
Slewing motor adopts winding motor and hydraulic transmission.slewing is stable
and powering.
5.Operation device
Cabin with humanized design,is convenient and comfortable,
facilitate for safe driving.
6. Mast section
Welding process use high-strength wire.
Main joints use special steel and special process.
Company Introduction1. We are manufacturer of tower crane and 20 years production experience.
2. Our company has specialized in the reach, develop,
manufacture and serve of topkit tower, topless tower crane,
luffing tower crane and construction elevator.
We can offer tower cranes with a maximum lifting load form
2.5t to 20t, which is from QTG25, QTZ25,
QTZ31.5, QTZ40, QTZ63, QTZ80, QTZ100,
QTZ125, QTZ160 and QTZ260.
3. We comply with CE and ISO9001-2000 international
quality management system standards.
4. Reliable quality, advanced technology, favorable price,
the best configuration, high safety factor, cost-effective--
MINGWEI products is trust worthy, we can ensure the customers buy the products assured and use happy.

3t construction machinery Tower Crane (QTZ31.5)
Shandong Mingwei Hoisting Equipment Co., Ltd. is located in Jinan east suburb---Mingshui economic and technical development zone, which is at the foot of mount Taishan, yellow river shoreline and Baotu spring\Baimai spring well-known throughout the countryOur company have cultivated a number of skilled workers at the production line. Which have 20000sq. M. Production workshop, 300 units for special production equipment and 15, 000, 000 RMB for capital assets.
More than 5000 crane in a year, is key enterprise of well-known crane production selling Quality is life of enterprise, detail makes difference. Standard operation, strictly check production of every procedure 100% pass rate of production...We got the certification of ISO90012000quality management system., becoming enterprise-free and honor the contracts and keep promises in Jinan business enterprise throughout company staff.
Have been successfully awarded "Shandong province construction machinery famous brand", "advanced unit", "ten top benefit enterprise" etc. Honors, and win the praise of users
After years of development Mingwei tower crane joins hand with Shandong province building academy of sciences and Shandon Foryou Co., Ltd, have developed fixing qtz25D, hydraulic self-rising qtz25, qtz31.5, qtz40, Qtz63, qtz80, qtz100, qtz125 and other the advanced tower cranes in domestic specifications at present, and obtains national quality certification. Our company also produce SC series construction hoist, LD type single-beam electric cranes, MX type 3-20T electric hoist gate-style cranes, LSY series jack screw, S concrete pump, PLD series concrete batcher, JS series forced double axis stirrer
"Strength builds competitive products, time forge splendor". Mingwei crane is reasonable structure, reliable performance, minimal maintenance, convenient dismounting, convenient transport and management, moderate price, high generalized and high cost performance. In long term usage, we are admired by our customer. Our company have opened 20 offices across the country, and set up after-sales service group to track service.
All stand "Mingwei" tower crane shadow across south and north of Yangtzi River, Qinhai-Tibet plateau, City and countryside, witness motherland great changes, development and stringing.
Under seizing the domestic market with steady steps, Mingwei tower crane expands the international market actively, and has successfully exported to Asia each country, Middle East and north America, which has become foreign trade long-term cooperation unit-------------China maximal crane export unit.
Although have experienced rains and winds, we still move forward. Believe the future will be better. This is Mingwei which is belong to Shandong, China, the world! -------reputation spread, global fame!
Other Products From This Manufacturer