CN2339550Y - Friction drive device of feed-back pressurizing type belt conveyor - Google Patents

Abstract

The utility model relates to the friction drive device of a feed-back pressurizing type belt conveyer, especially suitable for the horizontal or similar horizontal conveyance with a long distance, a big conveying quantity, and a high belt speed. The positive pressure of a driving roller is generated by the conveyer belt of the utility model under the combined action of the tension of the conveyer belt and a pressurizing belt. The tension of the pressurizing belt comes from the proper load force of the conveyer, and the size of the value of the tension is in direct proportion to the load of the conveyer. The utility model can cause the traction force for the limiting friction to be raised effectively, the working tension of the conveyer belt to be reduced, the slip phenomenon generated between the conveyer belt and the driving roller to be avoided, and the conveying distance for a single machine to be extended. Therefore, compared with the friction drive device of the existing belt conveyer, under the condition of same operation, a conveyer belt with a lower intensity level is adopted to meet the requirement, which causes the investment of the equipment to be reduced, the reliability to be enhanced, and the adaptability to be enhanced.

Description

The feedback adding pressure type belt conveyer sassafras driving device that rubs

The feedback adding pressure type belt conveyer sassafras driving device that rubs is to be transmission body with cylinder and load-transfer device, sets up a kind of mechanical device that relies on frictional force transmitting tractive power of feedback pressing mechanism.

The existing belt conveyer sassafras driving device that rubs, present various document (as " mechanical engineering manual ", " Transport Machinery handbook " etc.) record polytype arranged, its basic structure all is made up of driving drum, load-transfer device, reversing drum, unloading roller, take-up device (also can be located at tail or fuselage) and frame etc.From the driving drum number, single cylinder transmission, twin-roll transmission and multiple-roll transmission are arranged.The belt conveyer driving device of ground smaller power generally adopts single cylinder transmission, and this driving drum majority is located at head unloading end (making progress or the level transportation) or tail load-transfer device commutation end (transporting) downwards, and this moment, driving drum also was unloading roller or reversing drum.The more high-performance belt conveyer in mining industry down-hole and ground then generally adopts twin-roll or multiple-roll transmission.No matter be the driving device of any type, when load-transfer device enclosing cornerite and rubbing sassafras coefficient one regularly on driving drum, it can transmitting tractive power size depend on the transmission body size of normal force between the two.The generation of this application force is to rely on the initial tension of load-transfer device to realize, the load-transfer device initial tension is to rely on take-up device to produce.Because it is big that the required initial tension of load-transfer device is also wanted on the basis of satisfying sag requirement between the adjacent carrying roller often, could guarantee that driving device can produce the conveyer necessary sassafras tractive force that rubs of when work, the level of distance, large conveying quantity, high belt speed of especially grow is transported all the more so.Thereby the load-transfer device working tension is bigger, and conveyer need be selected the load-transfer device of higher-strength grade for use, has increased the investment and the running expense of equipment.If otherwise the load-transfer device initial tension is less than normal, driving device can not produce enough tractive forces, the phenomenon of " skidding " between the transmission body can occur during conveyer work, influences ordinary production, also can cause the fire disaster accident when serious.

The purpose of this utility model provides and a kind ofly can obtain the sassafras driving device that rubs of enough large tractions with the less initial tension of load-transfer device, improves its transmission performance, reduces the belt intension grade, reduces investment outlay and avoids " skid " generation of phenomenon of conveyer.

The purpose of this utility model is achieved in that with having driving device now and compares, and has set up a cover feedback pressing mechanism.This mechanism acts on the load forces of conveyer between driving drum and the load-transfer device, has increased transmission body application force between the two, thereby has improved the tractive force that driving device can transmit.

Below in conjunction with description of drawings: Fig. 1 and Fig. 2 is the rub constructional drawing of sassafras driving device of feedback adding pressure type belt conveyer.Among the figure: 1-load-transfer device reversing drum; The 2-frame; 3-feedback pressing mechanism assembly; The 4-driving drum; The 5-load-transfer device; The 6-carrying idler; The 7-unloading roller.Fig. 3 is the constructional drawing of feedback pressing mechanism assembly.Among the figure: 8-feedback cylinder framework; 9-adds pressure zone; 10-adds pressure zone commutation and belt tensioning drum.Fig. 4 is the constructional drawing of feedback cylinder framework.Among the figure: the 11-major axis; 12-left side reaction lever; The last feedback of 13-cylinder; The right reaction lever of 14-; The 15-end cap; 16-is the feedback cylinder down.The upper and lower feedback cylinder [13] of feedback cylinder framework [8] and the axle head of [16] are inlaid in the upper/lower terminal between two reaction levers [12] and [14] respectively, and link by bolt and end cap [15], left and right reaction lever [12] and [14] are set in the inboard at major axis [11] two ends, and the two ends of major axis [11] are inlaid in respectively in the vertical beam connection holes of machine frame at two sides.Load-transfer device [5] is walked around feedback cylinder [13], driving drum [4] and load-transfer device reversing drum [1] respectively to fuselage by fuselage carrying idler [6] after unloading roller [7] commutation.Adding pressure zone [9] walks around down respectively to get back to again behind feedback cylinder [16], driving drum [4] and the last feedback cylinder [13] and adds pressure zone and commutate and belt tensioning drum [10] by adding pressure zone commutation and belt tensioning drum [10], it is an osed top endless belt, go up it at driving drum [4] and be pressed in above the load-transfer device [5], its operation is to rely on load-transfer device [5] and the frictional force between it to drive.Load-transfer device [5] is close to cylinder surface on driving drum [4], add pressure zone [9] on load-transfer device [5].Add pressure zone [9] and be close to cylinder surface on last feedback cylinder [13], load-transfer device [5] is adding on the pressure zone [9].

The utility model is when work, and driving drum [4] is dragged by retarder by electrical motor and moves in the direction of the clock, and load-transfer device [5] is by v direction operation shown in Figure 1.When the conveyer load increases, the pulling force that load-transfer device [5] acts on feedback cylinder [13] strengthens, feedback increased pressure frame [8] is a center of gyration with its major axis [11] then, and integral body is deflection in the direction of the clock, up to the two ends up and down of reaction lever [13] and [16] stress balance for extremely.Because the two ends up and down of reaction lever [13] and [16] are uneven in length, length below the fulcrum is greater than above length, feed back the move to right amount of the amount of moving to left of cylinder [16] down greater than last cylinder [13], causing adding pressure zone [9] is tightened up, on driving drum [4], press tightlyer load-transfer device [5], thereby realized increasing transmission body positive pressure between the two, reached and improved the rub purpose of sassafras tractive force of driving device.

The utility model has adopted the positive feedback pressing mechanism, improved the frictional drive performance, has reduced conveyer belt Working tension. Compare with the existing rubber transmission device that rubs, in the constant situation of conveyer belt safety coefficient, use intensity Junior conveyer belt can meet the demands, thereby can save the investment of equipment. In addition, because this practicality is new The tractive force that type can transmit is greatly improved, and can avoid the existing sassafras transmission device that rubs because of the sassafras traction that rubs Power is not enough and " skidding " accident takes place, and also can prolong ribbon conveyer unit fed distance. Thereby belt is defeated Send machine to adopt the utility model, both can reduce the cost of equipment, can improve again reliability and the enhancing equipment of equipment Applicability.

Claims (3)

1, a kind of feedback adding pressure type belt conveyer sassafras driving device that rubs, by frame, driving drum, load-transfer device, unloading roller, feedback pressing mechanism assembly, add pressure zone, adding pressure zone tensioning and reversing drum and load-transfer device reversing drum forms, it is characterized in that: frame is a channel-section steel cube structure framework that utilizes Bolt Connection to become, its two ends of driving drum are fixed on the vertical equity beam of frame both sides by bearing seat respectively, unloading roller is connected in the unloading end of frame, the two ends of its major axis of feedback pressing mechanism assembly are inlaid in respectively in the connection holes of frame both sides vertical beam, add its two ends of pressure zone belt tensioning drum respectively by on the same vertical equity beam that is installed in the frame both sides with driving drum of bearing, its installation site can be along the horizontal beam fore-and-aft adjustment; Load-transfer device is walked around going up of feedback pressing mechanism assembly respectively by the fuselage carrying idler and is fed back cylinder, driving drum and load-transfer device reversing drum to fuselage after the unloading roller commutation; Adding pressure zone and walk around the going up to get back to again behind the feedback cylinder and add pressure zone commutation and belt tensioning drum of following feedback cylinder, driving drum and feedback pressing mechanism assembly of feedback pressing mechanism assembly respectively by adding pressure zone commutation and belt tensioning drum, is an osed top endless belt in driving device.

2, the feedback adding pressure type belt conveyer according to claim 1 sassafras driving device that rubs is characterized in that: feedback pressing mechanism assembly comprises feedback cylinder framework, adds pressure zone and adds pressure zone commutation and belt tensioning drum; Feedback cylinder framework by major axis, left reaction lever, on feed back cylinder, right reaction lever, end cap and down the feedback cylinder form; Left and right reaction lever is set in the inboard at major axis two ends, and major axis is the fulcrum of reaction lever, and the length below the reaction lever fulcrum is greater than above length; Convex shoulder and the end cap of upper and lower feedback cylinder by its two ends is connected in upper/lower terminal between the reaction lever of the left and right sides respectively, and the feedback cylinder can freely rotate on its axle.

3, according to claim 1 and the 2 described feedback adding pressure type belt conveyers sassafras driving device that rubs, it is characterized in that: on last feedback cylinder, add pressure zone and be close to the roll circumference surface, load-transfer device is on it; On driving drum, load-transfer device is close to the roll circumference surface, adds pressure zone on it.

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