RU2068382C1 - Screw conveyor section connecting device - Google Patents

Abstract

FIELD: mechanical engineering; materials handling facilities; connection of conveyor sections and working members of conveyor with drive shaft. SUBSTANCE: shaft of conveyor section connecting device is installed in bearing unit, cup is connected with conveyor section screw, and retainers are installed in longitudinal slots of cup and on pins press-fitted in shaft. Brackets are fitted in additional longitudinal slots of cup arranged in plane perpendicular to plane of main slots. Brackets engage with inner end face of cup. Axle ends are fitted in coaxial holes in projecting portions of brackets, middle portion of axle being fitted in hole of self-aligned hinge bearing. The latter is installed on end of shaft between press-fitted pins in hole whose geometric axis is perpendicular to common axis of press-fitted pins. EFFECT: enlarged operating capabilities. 5 dwg

Description

 The invention relates to a lifting and transport equipment, namely: to devices for connecting sections of a screw conveyor.

 Known auger conveyor (see A. S. USSR N 246377, 65 G 33/32 from 11/05/67) with a multi-section screw, screw sections of which are connected to each other using a device that includes a spherical end of the shaft mounted in an internal conical recess bushings of the screw section with a through groove for a key mounted on the shaft flat.

 In this conveyor, the axial force on the screw of the section, determined by the bearing capacity of the linear contact (around the circumference) of the spherical end of the shaft along the surface of the conical recess in the sleeve of the screw section, is insufficient to move the load. In addition, the spherical end of the shaft is not technologically advanced to manufacture.

 A known device adopted for the prototype for connecting sections of a screw conveyor (see ed. St. USSR N 305115, 65 G 33/00 from 06.26.70), including a shaft connected to the screw of the section and installed in the bearing assembly, the end of which is housed in a glass and interacts with a spherical washer, crackers located in the longitudinal grooves of the glass and on the finger pressed into the shaft.

 When using this device, the disadvantage is that the axial force on the screw of the section, determined by the bearing capacity of the limited spot of contact of the spherical surface of the washer with the end of the shaft, is also insufficient to move the transported cargo. The implementation of the area of the contact spot of the required size and the manufacture in this regard of the exact spherical surface on the washer is low-tech.

 The objective of the invention is to increase the axial force required on the screw of the conveyor section to move the transported cargo, by increasing the bearing capacity of the known device in the axial direction, as well as increasing its manufacturability.

 The solution to this problem is achieved by the fact that the known device, including a shaft connected to the screw of the conveyor section and installed in the bearing assembly, the end of which is placed in the cup, crackers located in the longitudinal grooves of the cup and on the fingers pressed into the shaft are equipped with brackets made in their protruding parts with holes and a self-aligning spherical bearing with a hole made in it, while in the glass there are additional internal longitudinal grooves located in the perpendicular plane ocular to the plane of the main longitudinal grooves, and the brackets are placed in additional longitudinal grooves of the cup with the possibility of contacting the end surface of the cup and are connected to the self-aligning articulated bearing by means of an axis located at their ends in the coaxial holes of the brackets, and the middle part in the hole of the self-aligning articulated bearing an end is made in the middle of the shaft between the pressed fingers, the axis of which is perpendicular to the common axis of the pressed fingers and in which a self-aligning hinge bearing.

 The presence of distinctive features in comparison with the prototype confirms the novelty of the claimed device.

 Due to the fact that among the known technical solutions there are no signs similar to those distinguishing the claimed solution from the prototype, the proposed device meets the criterion of "Significant differences".

Significant differences of the proposed device in contrast to the prototype are:
1) new structural elements:
brackets with holes in the protruding parts;
self-aligning spherical plain bearing with bore;
additional internal longitudinal grooves in the glass;
axis;
hole at the end of the shaft.

2) A new relationship and a new relationship of structural elements, which are expressed in the fact that:
additional internal longitudinal grooves in the glass are located in a plane perpendicular to the plane of the main longitudinal grooves;
the brackets are placed in additional longitudinal grooves of the glass with the possibility of contacting with the end surface of the glass;
the brackets are connected to a self-aligning spherical bearing via an axis;
the axis is located at its ends in the coaxial holes of the brackets, and the middle part in the hole of the self-aligning spherical bearing;
the axis of the hole at the end of the shaft is perpendicular to the common axis of the pressed fingers;
A self-aligning spherical bearing is installed in the hole at the end of the shaft.

 Achieved by a set of essential features is such a connection of the shaft with the screw of the conveyor section, in which, at angular distortions of the screw in any axial plane relative to the shaft, the axial force from the screw is transmitted to the shaft by brackets, an axis and a self-aligning spherical bearing having high operational technical characteristics, including load capacity , standardized and technological, manufactured in large-scale or in mass production using advanced technological methods, increases the bearing capacity of the proposed device in the axial direction and ensures the achievement of a technical result determined by the objective of the invention allows to increase the axial force required on the screw of the conveyor section to move the load, and improves the manufacturability of the device for connecting sections of the screw conveyor.

 In FIG. 1 shows the proposed device for connecting sections of a screw conveyor general view; figure 2 section aa in figure 1; figure 3 is a section bB in fig. 1; in Fig.4 a device mounted on a conveyor for connecting a conveyor screw to a rotation drive; in Fig.5 a device mounted on a conveyor for connecting screws of the sections of the conveyor to each other.

 In the proposed device, the shaft 1 (Fig. 1) is installed in the bearing assembly 2, the cup 3 formed by the parts 4, 5, 6 is connected to the screw 7 of the conveyor section by screws 8, the crackers 9 (Fig. 2, 3) are mounted with the possibility of movement in the longitudinal grooves 10 of the cup 3 and the fingers pressed into the shaft 11. The cup 3 is a continuation of the pipe of the screw 7. In the additional longitudinal grooves 12 of the cup 3 located in the axial plane of the shaft 1, perpendicular to the plane of the grooves 10, the brackets 13 are mounted. The brackets 13 are fixed in axial direction using ring 6, for replennogo at the lower end of the nozzle 3 by screws 14. The brackets 13 are in contact with the upper inner end 15 and the lower inner end 16 of the glass. The axis 17 with its ends is installed in the coaxial holes made in the protruding parts of the brackets 13. In the middle part, the axis 17 is installed in the hole of the self-aligning spherical bearing 18. And the bearing 18 with an outer ring is mounted on the end of the shaft 1 in the middle between the pressed fingers 11 in the transverse hole 19, the geometric axis which crosses the common axis of the pressed fingers 11 perpendicularly.

 The device operates as follows.

 The torque from the shaft 1 to the screw 7 of the conveyor section is transmitted by the fingers 11 and the crackers 9, which allow the screw 7 to skew relative to the shaft 1 in the horizontal plane due to the sliding of the crackers 9 having spherical heads in the longitudinal grooves 10 and in the vertical plane due to the rotation of the crackers 9 on the fingers 11. And the axial force B from the screw 7 is transmitted to the shaft 1 by other elements that are not involved in the transmission of torque: brackets 13, the axis 17 and the self-aligning spherical bearing 18, which thus connect the shaft 1 to the screw m 7 and allow the skew screw 7 in any axial plane relative to the shaft 1 due to rotation in any direction of the inner ring of the bearing 18 relative to its outer ring. The design of the device allows a change in the direction of the axial force on the screw, for example, depending on the direction of rotation of the screw: the axial force B, the compressing screw 7, is transmitted to the brackets 13 with the end face 15 of the cup 3, and the axial force G, the tensile screw 7, with the end face 16.

The device can be used in the following cases:
for connecting screws 21 of the conveyor sections (Fig. 5) to each other using an intermediate shaft 1 mounted in an outboard bearing assembly 2;
for connecting both single and multi-section screw of the conveyor 7 (Fig. 4) with the shaft 1 of the rotation drive installed in the bearing assembly 2 and connected, for example, by a chain gear 20 with a rotation drive.

 Such a connection of the shaft with the screw of the conveyor section, in which, with angular distortions of the screw relative to the shaft, the axial force is transmitted from the screw to the shaft by brackets, an axis and a self-aligning spherical plain bearing, which have high operational characteristics, including carrying capacity, standardized and manufactured by advanced technological methods and large-scale or in mass production, increases the bearing capacity of the proposed device in the axial direction, which allows to increase the axial force on nthe conveyor, necessary for moving the transported cargo, and increases the manufacturability of the device for connecting sections of the screw conveyor.

Claims (1)

 A device for connecting sections of a screw conveyor, including a shaft connected to the screw of the conveyor section and installed in the bearing assembly, the end of which is placed in the cup, crackers located in the longitudinal grooves of the cup and on the fingers pressed into the shaft, characterized in that it is equipped with brackets made in their protruding parts with holes and a spherical plain bearing with a hole made in it, while the glass is made with additional internal longitudinal grooves located in a plane axes perpendicular to the plane of the main longitudinal grooves, and the brackets are placed in additional longitudinal grooves of the glass with the possibility of contacting the end surface of the glass and are connected to the self-aligning articulated bearing by means of an axis located at their ends in the coaxial holes of the brackets, and the middle part in the hole of the self-aligning articulated bearing a hole is made in the middle of the shaft between the pressed fingers at the end of the shaft, the axis of which is perpendicular to the axis of the pressed fingers ant and in which a self-aligning hinge bearing.

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