CN2902971Y

CN2902971Y - Tensioning device of bucket elevator

Info

Publication number: CN2902971Y
Application number: CN 200620005214
Authority: CN
Inventors: 李维俭; 凌忠伟; 吴世平; 石东平; 何流
Original assignee: GUANGXI BAISE MINING MACHINERY FACTORY
Current assignee: GUANGXI BAISE MINING MACHINERY FACTORY
Priority date: 2006-01-20
Filing date: 2006-01-20
Publication date: 2007-05-23
Anticipated expiration: 2016-01-20

Abstract

A tension device of a bucket elevator comprises a tension chain wheel group (1), a sealed slide plate framework (2) and a tunable screw spring machine (3), and is characterized in that the tension chain wheel with no gears whose wheel flange is provided with a limited location boss of a chain board. The sealed slide plate framework (2) can move along an axial direction and be sealed perfectly. The tunable screw spring machine (3) can not only guarantee stable and credible tension, but also get visually lower shaft horizontal degree and tension extent. The tension device has the advantages of compact structure, high reliability, saving steel and environment friendly, in particular to suitable for a chain bucket elevator.

Description

A kind of tightening device of bucket elevator

Technical field the utility model belongs to the tightening device of a kind of tightening device of conveying machinery equipment, particularly chain bucket hoist.

Background technology is present, and the tightening device of bucket elevator no matter be screw tensioning or the tensioning of weight arm formula, all exists some shortcomings with not enough; 1. two idler sprockets all are that toothed chain wheel is arranged, because chain manufacturing and the error installed, perhaps owing to reasons such as two chains behind the service wear are different in size, sprocket take place and chain engages is bad even phenomenon that can be stuck through regular meeting; 2. the sealing mechanism in the tightening device all is fixedly connected with the bearing seat of idler sprocket group, and sealing effectiveness is poor; 3. the screw tensioning belongs to the rigidity tensioning, not only needs frequent adjustment, and usually because the excessive fault such as off-axis that causes of tensile force.And the tensioning of weight arm formula, its structure more complicated, floor area is big, and manufacturing cost is higher.

The summary of the invention the purpose of this utility model provides a kind of bucket elevator tightening device that can overcome above-mentioned weak point.The main point of the utility model difference prior art is: 1. the idler sprocket of this tightening device is anodontia halo version, and the positive stop lug boss of carrier bar is arranged on the wheel rim of this sprocket wheel.2. drop bar (5) can move axially: clamp sleeve (6) two ends cylindrical is the smooth face of cylinder, with slide plate (5) and the axially movable connection of bearing base (7); Pressure beam (11) is arranged on the slide plate (5), press the beam two ends that spring (9) is arranged, there is set screw (10) at the middle part, and screw holds out against slide plate (5); The below of clamp sleeve (6) has ash-unloading slot in the sealing sled mechanism (2).3. form adjusting screw tensioned mechanism (3) by tensioning screw (12), guide bracket (13), spring (14), spring perch (16) and nut (17), can realize flexible adjustable tensioning.

Below the description of drawings and the specific embodiment, in conjunction with the accompanying drawings the utility model is done further concrete the elaboration:

Fig. 1 is the utility model structural representation.

Fig. 2 is the structural representation in idler sprocket wheel rim cross section among Fig. 1.

Fig. 3 is the structural representation of drop bar mechanism (2) among Fig. 1.

Fig. 4 is the pinch device scheme drawing of drop bar among Fig. 3 (5).

Fig. 5 is adjusting screw tensioned mechanism (a 3) structural representation among Fig. 1.

The utility model is mainly formed (see figure 1) by idler sprocket group (1), drop bar mechanism (2), adjusting screw tensioned mechanism (3) and bearing support (4).

In Fig. 2, sprocket wheel is anodontia halo structure, and design has the positive stop lug boss of carrier bar.This kind structure is even because the bad or stuck phenomenon of chain sprocket engagement can not take place for the manufacturing of chain and installation error or because service wear causes two chain overbalances, guaranteed the normal operation of machine.Specially-made positive stop lug boss has guaranteed the tram of chain, avoids taking off the generation of chain phenomenon.

In the drop bar structure shown in Figure 3, clamp sleeve (6) two ends cylindrical is the smooth face of cylinder, and the one end is enclosed within on the slide plate (5), and the other end is inserted in the lower bearing base (7), with slide plate (5) and the axially movable connection of bearing base (7).Degree of tightness by clamp sleeve (6) scalable packing (8).Clamp sleeve (6) below has ash-unloading slot, and when the packing inefficacy causes leaking ash, ashes will draw off from ash-unloading slot, can never flow into bearing, influence bearing life.

Figure 4 shows that the pinch device of slide plate (5).Pressure beam (11) is arranged on the slide plate (5), press the beam two ends that spring (9) is arranged, there is set screw (10) at the middle part, and set screw (10) holds out against slide plate (5).Turn screw (10) is with regard to scalable thrust size.

In the adjusting screw spring device shown in Figure 5, screw rod (12) is enclosed within on the guide bracket (13), guide bracket (13) two ends are shaped on bolt hole, match with the hole of support (4), be fixed by bolts on the bearing support (4), bearing support (4) has many group screws by certain distance, and guide bracket (13) can be adjusted the position by idler sprocket group differing heights.Tensioned power is regulated by turn nut (17), can guarantee stable tensile force.This structure can make the Design of length of screw rod become the shortest, both can guarantee the stability of screw rod, reduces manufacturing cost again.Guide bracket is equipped with the tension force scale graduation on (13), and tension force pointer (15) is arranged on the spring perch (16), can adjust the levelness of lower shaft from the indication of pointer, and the size that can conveniently read tensile force.

The utility model is compared with existing bucket elevator tensioning apparatus, and compact conformation is practical reliable, saving steel, the feature of environmental protection Can be good, be particularly useful for using on the chain bucket hoist.

Claims

1, a kind of tightening device of bucket elevator, the idler sprocket that it is characterized in that this device are anodontia halos.

2, the tightening device of a kind of bucket elevator as claimed in claim 1 is characterized in that on the wheel rim of sprocket wheel the carrier bar positive stop lug boss being arranged.

3, the tightening device of a kind of bucket elevator as claimed in claim 1 is characterized in that clamp sleeve (6) the two ends cylindrical in the drop bar mechanism (2) is the smooth face of cylinder, with slide plate (5) and the axially movable connection of bearing base (7); Pressure beam (11) is arranged on the slide plate (5), press the beam two ends that spring (9) is arranged, there is set screw (10) at the middle part.

4, the tightening device of a kind of bucket elevator as claimed in claim 1 is characterized in that the below of clamp sleeve (6) has ash-unloading slot.

5, the tightening device of a kind of bucket elevator as claimed in claim 1 is characterized in that guide bracket (13) two ends on the tensioning screw (12) are shaped on bolt hole, matches with the hole of support (4); Tension force pointer (15) is housed on the spring perch (16)