CN108792911A - A kind of improved-type step chain of lubrication - Google Patents

Abstract

The invention mainly discloses a step chain with improved lubrication. Its technical solution includes several hinges. The hinges include a pair of inner chain plates, a pair of outer chain plates, sleeves, pins and rollers. surplus connection, the outer chain plate is connected with the pin shaft with interference, the sleeve and the roller are in clearance fit, there are oil holes on both sides of the sleeve, and grooves are provided on both ends of the sleeve, the inner chain plate and the outer There is a first side gap between the chain plates, a second side gap is set between the inner chain plate and the rollers, the first gap is formed between the pin shaft and the sleeve, and the second gap is formed between the sleeve and the rollers. The first oil passage is formed through the first side clearance, the groove and the first clearance in turn, and the second oil passage is formed through the second side clearance, the second clearance, the oil hole and the first clearance in turn. The oil storage tank enters the pin shaft oil storage tank through the first oil passage and the second oil passage respectively. The invention has the advantages of improving the lubricating effect of the hinge kinematic pair, thereby reducing wear and prolonging the service life.

Description

A step chain with improved lubrication

technical field

The invention relates to a step chain for an escalator or a moving walk, in particular to a step chain with improved lubrication.

Background technique

At present, step chains are widely used in escalators for transmission, lifting and conveying. In the escalator system, the step chain is a key component, not only to ensure the safety of passengers during the operation of the escalator, but also to ensure the comfort of the passengers during the operation of the escalator, and to ensure the service life of the step chain. In the prior art, the main failure mode of the step chain is wear and elongation, and the main cause of wear and elongation is insufficient and effective lubrication of the hinge motion pair between the sleeve and the pin shaft of the step chain, which aggravates the wear.

In the prior art, Chinese Patent No.: CN201120556078.3 proposes a sealed oil-free chain. The hinge forms a sealed space, which can prevent foreign matter from entering and ensure sufficient and long-term lubrication. However, it is not recognized by the market due to high manufacturing costs. . Chinese Patent No.: CN201220706779.5 proposes a stepped chain with an oil filling cup. The interior of the hinge is designed with the structure of the oil filling cup to form a grease lubricating oil path, which reduces wear and improves life. However, it is caused by regular filling of grease during maintenance. Maintenance costs are high. In order not to increase energy consumption and cost, the market urgently needs a step chain with improved lubrication.

Contents of the invention

Aiming at the deficiencies in the prior art, the invention provides a lubricating-improved stepped chain, which can improve the lubricating effect of the hinge kinematic pair, thereby reducing wear and prolonging the service life.

In order to achieve the above object, the present invention is achieved through the following technical solutions: a step chain with improved lubrication, including several hinges, the hinges are connected by adjacent links, and the hinges include a pair of inner chain plates, a pair of outer Chain plates, sleeves, pin shafts and rollers, the inner chain plate and the sleeve are in interference connection, the outer chain plate and the pin shaft are in interference connection, the pin shaft and the sleeve are clearance-fitted to form a hinge kinematic pair, and the sleeve Cooperate with the clearance between the rollers, there are oil holes on both sides inside the sleeve, grooves are provided on both ends of the sleeve, there is a first side gap between the inner link plate and the outer link plate, and the inner link plate and the outer link plate are provided with a first side gap. There is a second side gap between the rollers, the first gap is formed between the pin shaft and the sleeve, the second gap is formed between the sleeve and the roller, and the first side gap, the groove and the first gap are formed in turn. An oil passage, forming a second oil passage through the second side clearance, the second clearance, the oil hole and the first clearance in turn, oil storage tanks are arranged on both sides of the pin shaft, and enter through the first oil passage and the second oil passage respectively Pin shaft oil reservoir.

The present invention further: the distance between the end surfaces on both sides of the oil storage tank is greater than the distance between the wall surfaces of the two oil holes of the sleeve.

The present invention further: the plane of the oil storage groove of the pin shaft is parallel to the plane of the pin shaft and parallel to the plane of the sleeve.

The present invention further: the axial direction of the oil hole is perpendicular to the plane of the sleeve.

The present invention further: the groove is perpendicular to the plane of the sleeve.

The present invention further: the hole wall surface of the first oil hole of the sleeve is located inside the roller, and the hole wall surface of the first oil hole of the sleeve is located inside the roller.

The present invention has the beneficial effects of:

The first oil passage is formed through the first side clearance, the groove and the first clearance in turn, and the second oil passage is formed through the second side clearance, the second clearance, the oil hole and the first clearance in turn, and oil storage grooves are arranged on both sides of the pin shaft , through the first oil passage and the second oil passage respectively into the oil storage tank of the pin shaft, by providing grooves on the end face of the sleeve and oil holes on the outer circular surface, two lubrication passages are established by using the "siphon effect" to increase lubrication The amount of grease filling ensures sufficient lubrication of the hinge; the outer surface of the pin shaft is provided with an oil storage tank to store excess grease to ensure long-term lubrication of the hinge. Such a structural design economically improves the lubrication effect of the hinge, reduces wear, prolongs the service life, and reduces the maintenance cost of the step chain.

Description of drawings

Fig. 1 is a schematic diagram of a partial segment of a cascade chain;

Fig. 2 is another angle schematic diagram of partial chain segment of cascade chain;

Fig. 3 is a schematic cross-sectional view of hinge A-A in Fig. 2;

Fig. 4 is a partial schematic view of the hinge in Fig. 1;

FIG. 5 is a partial schematic diagram in FIG. 3 .

Reference signs: 1, hinge; 2, inner link plate; 3, outer link plate; 4, sleeve; 5, pin shaft; 6, roller; 7, oil hole; 71, hole wall surface; 8, groove; 9. Oil storage tank; 10. First side clearance; 11. Second side clearance; 13. First clearance; 14. Second clearance; 15. Grease.

Detailed ways

The preferred embodiments of the present invention will be described in further detail in conjunction with the accompanying drawings.

As shown in Figures 1-5, a step chain with improved lubrication includes several hinges 1 connected by adjacent links. The hinge 1 includes a pair of inner chain plates 2 and a pair of outer chain plates. 3. Sleeve 4, pin shaft 5 and roller 6, inner link plate 2 and sleeve 4 are in interference connection, outer link plate 3 and pin shaft 5 are in interference connection, and the pin shaft 5 and sleeve 4 are formed by clearance fit The hinge movement pair, the sleeve 4 and the roller 6 are in clearance fit, the inner sides of the sleeve 4 are provided with oil holes 7, and the two ends of the sleeve 4 are provided with grooves 8, the inner chain plate 2 and the outer chain plate A first side gap 10 is provided between the chain plates 3, a second side gap 11 is provided between the inner chain plate 2 and the roller 6, a first gap 13 is formed between the pin shaft 5 and the sleeve 4, and the sleeve 4 and the The second gap 14 is formed between the rollers 6, the first oil passage is formed through the first side gap 10, the groove 8 and the first gap 13 in sequence, and the second side gap 11, the second gap 14, the oil hole 7 and the The first gap 13 forms a second oil passage, and oil storage tanks 9 are arranged on both sides of the pin shaft 5, and enter the oil storage tank 9 through the first oil passage and the second oil passage respectively. By setting the groove 8 on the end surface of the sleeve 4 and the oil hole 7 on the outer circular surface, two lubricating passages are established by using the "siphon effect", increasing the filling amount of the lubricating grease 15, and ensuring that the hinge 1 is fully lubricated; 5. The outer circular surface is provided with an oil storage tank 9 and saves excess lubricating grease 15 to ensure that the hinge 1 is lubricated for a long time. This structural design economically improves the lubrication effect of the hinge 1, reduces wear, prolongs the service life, and reduces the maintenance cost of the step chain

The distance between the end surfaces on both sides of the oil storage tank 9 is greater than the distance between the walls of the two oil holes 7 of the sleeve 4 .

The plane of the oil storage tank 9 of the pin shaft 5 is parallel to the plane of the pin shaft 5 and parallel to the plane of the sleeve 4 . The axial direction of the oil hole 7 is perpendicular to the plane of the sleeve 4 , and the groove 8 is perpendicular to the plane of the sleeve 4 .

The hole wall surface 71 of the first oil hole 7 of the sleeve 4 is located inside the roller 6 , and the hole wall surface 71 of the first oil hole 7 of the sleeve 4 is located inside the roller 6 .

During actual work: the pin shaft 5 is provided with an oil storage tank 9. Taking the first oil circuit as an example, the grease 15 enters the groove 8 through the first side gap 10, and the grease 15 passes through the groove 8 by using the siphon effect during the movement. The groove 8 enters the first gap 13 and finally reaches the oil reservoir 9 . Taking the second oil passage again as an example, the grease 15 enters the second gap 14 through the second side gap 11, and the grease 15 enters the first gap 13 through the oil hole 7 of the sleeve 4 through the siphon effect during the movement, And finally reach the oil storage tank 9. The grease 15 enters the interior of the hinge 1 through the first oil passage and the second oil passage, and can store excess lubricating grease 15 in the oil storage tanks 9 on both sides of the pin shaft 5, not only to increase the filling amount of the lubricating grease 15 to ensure sufficient lubrication of the hinge 1; And the long-term lubrication of the hinge 1 is ensured by providing the oil storage tank 9 on the outer surface of the pin shaft 5 to preserve excess lubricating grease 15 . Such a structural design economically improves the lubrication effect of the hinge 1, reduces wear, prolongs the service life, and reduces the maintenance cost of the step chain.

The above-mentioned embodiments are only used to explain the inventive concept of the present invention, but not to limit the protection of the rights of the present invention. Any insubstantial changes made to the present invention by using this concept should fall within the scope of protection of the present invention.

Claims (6)

1. a kind of lubricating improved-type step chain, including several hinges, it is formed by connecting by adjacent link between hinge, feature It is：The hinge includes that a pair of of inner plate, a pair of of outer plate, sleeve, axis pin and roller, inner plate connect with sleeve interference It connects, outer plate is connect with axis pin interference, and the axis pin forms hinge movement pair with sleeve clearance fit, between the sleeve and roller Gap coordinates, and the sleeve inner both sides are equipped with oilhole, and sleeve both ends of the surface are equipped with groove, are set between the inner plate and outer plate There is the first sideshake, the second sideshake is equipped between inner plate and roller, forms the first gap, sleeve and roller between axis pin and sleeve Between form the second gap, pass sequentially through the first sideshake, groove and the first gap form the first oil circuit, pass sequentially through the second side Gap, the second gap, oilhole and the first gap form the second oil circuit, and the axis pin both sides are equipped with oil storage tank, pass through first respectively Oil circuit and the second oil circuit enter oil storage tank.

2. a kind of improved-type step chain of lubrication according to claim 1, it is characterised in that：Between oil storage tank both sides of the face Distance is more than the distance between two oilhole wall surface of sleeve.

3. a kind of improved-type step chain of lubrication according to claim 1, it is characterised in that：The plane and pin of axis pin oil storage tank Axial plane is parallel, and parallel with sleeve plane.

4. a kind of improved-type step chain of lubrication according to claim 1, it is characterised in that：The oilhole axis direction and set Cylinder plane is vertical.

5. a kind of improved-type step chain of lubrication according to claim 1, it is characterised in that：The groove hangs down with sleeve plane Directly.

6. according to a kind of improved-type step chain of lubrication described in claim, it is characterised in that：The hole of the first oilhole of the sleeve Wall surface is located inside roller, and the wall surface of the hole of the first oilhole of the sleeve is located inside roller.