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Cantilever roadheader shall simultaneously realize the functions of stripping coal and rock, loading and transportation, travel adjustment of the machine itself, and spray dust removal, that is, it integrates cutting, loading, transportation, and walking. It mainly consists of cutting mechanism, loading mechanism, transportation mechanism, walking mechanism, frame and turntable, hydraulic system, electrical system, cooling and dust suppression water supply system, and operation control system. The main working mechanisms include cutting arm, rotary table, slag loading plate, conveyor, transfer machine, track, etc.
Main characteristics of cantilever tunneling machine：
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The cantilever tunneling machine can only cut a partial section of the roadway. To break the entire rock section, the cutting head needs to be continuously moved up, down, left, and right multiple times to complete the work. Can be used for tunnels of any cross-sectional shape;
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The excavation speed is greatly affected by the utilization rate of the tunneling machine, which can reach around 60% under optimal conditions. However, if the rock requires support or other auxiliary work that cannot keep up, the utilization rate is even lower;
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There are some advantages similar to full face tunneling machines: continuous excavation, no blasting vibration, and the ability to more freely determine the appropriate timing for supporting rocks; Can reduce over excavation; Can save the cost of rock support and lining;
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Compared with full section tunneling machines, cantilever tunneling machines are compact and have greater flexibility in tunnels, and can be used for any type of support;
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Compared with full section tunneling machines, it has significant characteristics such as low investment, short construction preparation time, and high reusability.
Performance characteristics：
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The overall appearance of the machine is compact, suitable for use in short and narrow tunnels, convenient and flexible;
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The cutting section is driven by a hydraulic motor or electric motor, which is extendable and has a large cutting range;
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Each component adopts a long-life and high-strength structural design;
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Loading and transportation are directly driven by hydraulic motors, with a low failure rate;
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The key components are sourced from well-known international and domestic brands.
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project
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Company
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Technical parameter values
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Product model
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Cantilever tunneling machineHLZ-45A
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External dimensions（A×M×H）
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m
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6.3×1.3×1.5
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Blade width(N)
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m
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1.58
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Track outer width(M)
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m
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1.3
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Total installed power
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kW
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67
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Whole machine weight
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t
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8.5
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Maximum excavation height(D)
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m
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3.6
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Maximum positioning excavation width(2W)
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m
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4.0
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Economic cutting section
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m²
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4～12
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Excavation section shape
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arbitrarily
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Climbing ability
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°
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±16
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Uniaxial compressive strength of cuttable rocks
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MPa
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≤40
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Ground gap
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mm
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240
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Maximum diameter of cutting head
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mm
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Φ620
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Cutting motor power
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kW
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45
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Cutting head speed
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r/min
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42
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Expansion distance
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mm
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870
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Maximum undercover depth
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mm
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460
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Loading form
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Star wheel
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Star wheel speed
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r/min
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37
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Conveyor form
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Edge double circular chain scraper type
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Conveyor chain speed
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m/s
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0.8
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Conveyor trough width
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mm
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380
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Transportation capacity
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m³/h
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128
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Walking form
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Crawler type
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Walking speed
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m/min
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12
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Maximum traction force of the track
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kN
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70
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Average ground voltage ratio
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MPa
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0.09
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Pump station power
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kW
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22
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Rated working pressure
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MPa
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16
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Working medium
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N68#Anti-wear hydraulic oil
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External spray pressure
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MPa
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1.5≤P≤3.0
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Internal spray pressure
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nothing
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Total traffic
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L/min
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≥35
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Supply voltage
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V
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380/660 /1140
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Total control power
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kW
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74.5
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Lighting voltage
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V
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36
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Explosion proof form
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Explosion proof and intrinsic safety type
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Can be equipped with bridge type reprinting machine
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m
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7.5～17.5
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Note: The above parameters can be designed according to user requirements, and our company reserves the right to make timely changes. This article is from:Hubei Hengli Engineering Machinery Co., LtdPlease indicate the source when reprinting! Hubei Hengli Heavy Industry focuses on underground operationsScraper loaderSeriesMining loaderSeries, tire type, steep track typeSlag scraper(Mining slag scraper、Wheel scraper、Crawler scraper、Inclined shaft scraper）The series of engineering machinery and equipment, including the curved track side dumping dump truck series, fully hydraulic excavation drilling truck series, and mining excavation machine series, are distributed throughout the country and exported to both domestic and foreign markets, earning high praise and trust from users!
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