CN112027538A

CN112027538A - Spiral flexible shaft and spiral material conveyor

Info

Publication number: CN112027538A
Application number: CN202010804158.XA
Authority: CN
Inventors: 袁志洲; 曹威; 张�杰; 李全民; 刘子河; 尹赵家; 张桂才; 黄文平; 薛春; 朱琴
Original assignee: Nanjing Juli Intelligent Manufacturing Technology Research Institute Co ltd; Nanjing Zhongcai Cement Spare Parts Co ltd
Current assignee: Nanjing Juli Intelligent Manufacturing Technology Research Institute Co ltd; Nanjing Zhongcai Cement Spare Parts Co ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2020-12-04
Anticipated expiration: 2040-08-12
Also published as: WO2022032705A1; CN112027538B

Abstract

The invention discloses a spiral flexible shaft and a spiral material conveyor, wherein the spiral flexible shaft comprises a thick steel wire rope flexible shaft and spiral blades arranged on the thick steel wire rope flexible shaft, the spiral material conveyor adopts the spiral flexible shaft as a spiral movement, a shell of the conveyor can be set into a nonlinear structure and comprises a turning section and a shell section, the turning section is connected with the shell section through a nylon bearing bush joint assembly, and the nylon bearing bush joint assembly comprises a joint shell, an annular oil nylon tile, a sunk screw, a fixed positioning nut, an annular positioning ring and the like. The invention can overcome the defects that the current screw conveyor can not turn, can only carry in a straight line, has limited conveying length, more screw joints, high processing precision, high concentricity requirement of a screw core, more faults, difficult maintenance and the like, can realize the screw shaft for conveying materials by only one flexible shaft, has no joint in the middle and achieves the aim of long-distance and multi-turn conveying.

Description

Spiral flexible shaft and spiral material conveyor

Technical Field

The invention relates to the technical field of material conveying equipment, in particular to a spiral flexible shaft and a spiral material conveyor.

Background

The screw conveyor pushes materials through the screw shaft with the screw blades to convey the materials, and has the advantages of small occupied space, high conveying efficiency and the like. But most of the existing screw conveyors can only carry out linear conveying, the core pipe of the screw conveyor adopts a seamless steel pipe, the processing precision is required to be high, the concentricity of the screw conveyor is high, the screw conveyor is not suitable for long-distance conveying, the manufacturing cost is high, the faults are many, the spacing distance of bearing sets between the cores is short, and the maintenance and the overhaul are difficult. After long-term use, the phenomenon of material jamming is frequent, the equipment is worn more, and the equipment maintenance difficulty is high.

Disclosure of Invention

The technical purpose is as follows: in order to solve the technical problems, the invention provides a spiral flexible shaft and a spiral material conveyor, which have unique structural design, so that the spiral shaft of the spiral material conveyor can be realized by only one flexible shaft without any joint in the middle, and the purpose of long-distance and multi-turn conveying is achieved.

The technical scheme is as follows: in order to achieve the technical purpose, the invention adopts the following technical scheme.

A spiral flexible shaft is characterized in that: the novel anchor ear fixing device comprises a thick steel wire rope flexible shaft and a plurality of groups of helical blades, wherein the thick steel wire rope flexible shaft is mainly formed by twisting more than one steel wire rope, each group of helical blades are respectively installed outside the thick steel wire rope flexible shaft through an anchor ear structure, and an expansion joint is formed between two adjacent groups of helical blades.

Preferably, the hoop structure comprises a pair of half hoop pipes and a plurality of folding bolts, each group of helical blades consists of two half blades, the center of each blade is welded on the corresponding half hoop pipe, the folding bolts are used for connecting the two half hoop pipes, and each group of helical blades is detachably fixed on the thick steel wire rope flexible shaft through the half hoop pipes and the folding bolts.

Preferably, the pitch of two adjacent sets of helical blades is in the range 5-30 mm.

The invention also discloses a spiral material conveyor which is provided with the spiral flexible shaft and is characterized in that: the spiral flexible shaft is arranged inside the casing and parallel to the axial direction of the casing, and is used for spirally conveying materials.

Preferably, the casing is of a nonlinear structure and comprises a turning section and casing sections, and two ends of the turning section are respectively connected with more than one casing section; the bent sections are connected with the shell sections through first joints, and adjacent shell sections are connected through first joints or second joints.

Preferably, the first joint is a nylon bush joint assembly, and the nylon bush joint assembly comprises a joint shell, an annular nylon bush, a countersunk screw, a fixed positioning nut and an annular positioning ring; welding and fixing a positioning nut at the excircle position of the helical blade, wherein a countersunk screw penetrates through the joint shell to be connected with the fixing and positioning nut, and the annular nylon tile is connected with the fixing and positioning nut; the joint shell is provided with an annular positioning ring at the inner wall of a cavity for mounting the annular nylon tile, and the annular positioning ring is used for positioning the annular nylon tile and ensuring the concentricity of the annular nylon tile and the helical blade to form a bearing bush of the flexible shaft helical core and rotate along with the helical flexible shaft.

Preferably, an oil groove is radially formed at the position of the joint shell for mounting the annular nylon tile; an annular tile seat is arranged on the excircle of the annular oil nylon tile, an oil filling hole is arranged on the annular tile seat, and the oil filling hole is communicated with an oil ditch; the junction of annular oily nylon tile and joint casing sets up 0 type circle, and annular tile seat passes through the bolt and is connected with the joint casing.

Preferably, the first joint adopts a nylon bush joint assembly, the second joint adopts a non-bush joint assembly, the first joint and the second joint both comprise joint housings, and two outer sides of the joint housings are respectively provided with a group of housing flanges and annular connecting flanges for detachably mounting the joint housings at the joints of adjacent housing sections or the joints of bent sections and housing sections.

Preferably, the housing beside the first joint is provided with an access hole.

Preferably, one end of the casing is provided with a transmission shaft, or both ends of the casing are respectively provided with a transmission shaft, one end of each transmission shaft is used for connecting a driving mechanism, the other end of each transmission shaft is fixed with the thick steel wire rope flexible shaft by arranging a combined hoop structure, a through bolt and a half bolt, the combined hoop structure comprises hoop sheets covering the outside of the joint of the transmission shaft and the thick steel wire rope flexible shaft, the hoop sheets are fixedly connected by the half bolt, and the outer ends of the joint of the transmission shaft and the thick steel wire rope flexible shaft are also provided with through bolts for enhancing the fixing effect.

Has the advantages that: due to the adoption of the technical scheme, the invention has the following technical effects:

1) the spiral flexible shaft designed by the invention is made of thick steel wire ropes, has the characteristics of high strength and high toughness, is used as a spiral conveying shaft core in a spiral material conveyor, and can solve the technical problems that the conventional spiral conveyor can only carry materials in a straight line, is limited in conveying length, has more spiral joints and the like.

2) The spiral shaft of the spiral material conveyor can be completed only by one spiral flexible shaft, the middle part of the spiral material conveyor is free of any joint, and the shell sections are connected through the bearing bush joints, so that long-distance and multi-turn conveying can be realized, the concentricity requirement is low, and the equipment precision requirement and the processing cost are reduced.

3) According to the spiral flexible shaft, each spiral blade and the thick steel wire rope flexible shaft are fixed through the hoop and the bolt instead of being rigidly connected, so that even if foreign matters exist, the thick steel wire rope flexible shaft is not easy to block due to the freedom degree of the thick steel wire rope flexible shaft, and smooth material transmission and equipment maintenance are facilitated.

4) The annular nylon bearing bush structure can replace the oil nylon bearing bush without disassembling the spiral shaft and the shell, and is very convenient to overhaul and maintain.

Drawings

FIG. 1 is a schematic structural diagram of a spiral flexible shaft according to the present invention;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is a schematic view of the spiral material conveyor of the present invention;

FIG. 4 is a schematic structural view of the nylon bushing adapter assembly of FIG. 3;

FIG. 5 is a schematic view of FIG. 4 in partial section;

FIG. 6 is an enlarged view of portion BB of FIG. 5;

FIG. 7 is a cross-sectional view of the connection of the nylon bushing adapter assembly to the housing;

FIG. 8 is a cross-sectional view taken in the direction CC of FIG. 4;

FIG. 9 is a schematic view of the connection between the helical blade and the connecting rod and the fixing and positioning nut in FIG. 8;

FIG. 10 is a schematic view of the end of the housing of FIG. 3 coupled to a drive mechanism;

FIG. 11 is an enlarged view of portion AA in FIG. 10;

wherein, 1-thick steel wire rope flexible shaft, 11-expansion joint;

2-helical blade, 21-half blade;

3-hoop structure, 31-half hoop pipe and 32-folding bolt;

4-casing, 41-bending section, 42-casing section and 43-transmission shaft;

5-first joint, 51-joint shell, 52-annular oil nylon tile, 53-countersunk head screw, 54-fixed positioning nut, 55-annular positioning ring, 56-oil groove, 57-annular tile seat, 58-oil hole, 59-O-shaped ring, 510-shell flange and 511-annular connecting flange; 512-connecting rod;

6-a second joint, 7-a driving mechanism, 8-a combined hoop structure, 9-a through bolt and 10-a half bolt.

Detailed Description

The invention is further illustrated and explained below with reference to the figures and examples.

As shown in fig. 1 and 2, the invention provides a spiral flexible shaft, which comprises a thick steel wire rope flexible shaft 1 and a plurality of groups of spiral blades 2, wherein the thick steel wire rope flexible shaft 1 is mainly formed by twisting more than one steel wire rope, and is not a common seamless steel pipe core but a thick steel wire rope; each group of helical blades 2 is respectively arranged outside the thick steel wire rope flexible shaft 1 through a hoop structure 3, and an expansion joint 11 is formed between every two adjacent groups of helical blades 2.

Staple bolt structure 3 includes half a husband's hoop pipe 31 and folds bolt 32, and every group helical blade 2 comprises two half-blade 21, and half a husband's hoop pipe that corresponds of every blade center welding, and hoop pipe (2 half) set up folds the bolt, presss from both sides 2 half-blade on thick wire rope flexible axle through folding the bolt clamp, and the slope welding of every half-blade of group is in the hoop pipe of corresponding husband, and all helical blade of group install on thick wire rope is epaxial according to predetermineeing the law, form the axial structure that is the spiral and arranges.

A gap of 5-30mm is properly reserved between the 2 spiral blades, particularly at the corner, so that the spiral blades cannot interfere with each other when foreign matters are avoided and the corner rotates.

As shown in fig. 3 to 11, a spiral material conveyor using the spiral flexible shaft as a spiral core includes a casing 4, a spiral flexible shaft 1 is disposed inside the casing 4, the spiral flexible shaft 1 is parallel to the axial direction of the casing 4, in this embodiment, the casing 4 is a non-linear structure and includes a turning section 41 and a casing section 42, and two ends of the turning section 41 are respectively connected to more than one casing section 42; the bent section 41 is connected with the casing sections 42 through arranging a first joint 5, and the adjacent casing sections 42 are connected through arranging a first joint 5 or a second joint 6.

In the invention, on the machine shell at every several meters, if the interval distance of the vertical conveying end can be lengthened, the second joint of the machine shell of the screw conveyor is a common joint, and the common joint adopts a connecting flange to connect 2 adjacent machine shells into a whole through bolts. In order to prevent the flexible shaft spiral blade from sinking and rubbing the shell at the turning part and the shell subsection, a nylon bearing bush joint section is arranged, and the nylon bearing bush joint section comprises a flange, a shell, an annular tile seat (2 pieces), an annular oil nylon tile (2 pieces), an O-shaped ring and other parts. As shown in fig. 3, the first joint 5 is a nylon bush joint assembly, the second joint 6 is a non-bush joint assembly, the first joint 5 and the second joint 6 each include a joint housing 51, and a set of housing flanges 510 and an annular connecting flange 511 are respectively disposed on two outer sides of the head housing 51, so as to detachably mount the joint housing 51 at a joint of adjacent housing sections 42 or a joint of the turning section 41 and the housing section 42.

In the invention, a positioning nut is preferably welded and fixed at the excircle position of the helical blade, and the annular nylon tile is connected with the positioning nut through a countersunk screw to form a bearing bush of the flexible shaft helical movement and rotate together with the flexible shaft. The annular positioning ring plays a role in radially positioning the annular oil nylon tile. An oil groove is radially arranged at the position of a joint shell provided with the oil nylon tile for supplementing lubrication; an annular tile seat is arranged on the excircle of the nylon tile, an oil filling hole is formed in the annular tile seat, and the annular tile seat is directly communicated with an oil groove of a connector shell; the annular tile seat is connected with the joint shell through 4 bolts; and (3) dismantling 2 adjacent annular connecting flanges, namely dismantling or installing the annular tile seat and the annular nylon tile, and dismantling the other 2 annular connecting flanges in turn to complete the installation or overhaul of the opposite annular tile seat and the annular nylon tile. As shown in fig. 3 to 7, the first joint 5 is a nylon bush joint assembly, which includes a joint housing 51, an annular nylon bush 52, a countersunk screw 53, a fixed positioning nut 54, and an annular positioning ring 55; a positioning nut 54 is welded and fixed at the excircle position of the helical blade 2, a countersunk screw 53 penetrates through the joint shell 51 to be connected with the positioning nut 54, and the annular nylon tile 52 is connected with the positioning nut 54 to form a bearing bush of the flexible shaft helical core and rotate along with the helical flexible shaft 1; the joint housing 51 has an annular positioning ring 55 at the inner wall of the cavity where the annular nylon tile 52 is installed for positioning the annular nylon tile 52 and ensuring concentricity of the annular nylon tile 52 and the spiral blade 2, as shown in fig. 8 and 9, in this embodiment, a connecting rod 512 for connecting a fixing nut is provided, and fig. 8 shows a section of the cavity of the spiral blade. In addition, an oil groove 56 is radially opened at the position of the joint housing 51 where the annular nylon tile 52 is installed; an annular tile seat 57 is arranged on the outer circle of the annular oil nylon tile 52, an oil filling hole 58 is arranged on the annular tile seat 57, and the oil filling hole 58 is communicated with the oil ditch 56; an O-shaped ring 59 is arranged at the joint of the annular nylon tile 52 and the joint shell 51, and the annular tile seat 57 is connected with the joint shell 51 through bolts.

As shown in fig. 10 and 11, the present invention has the transmission shaft 43 disposed at one end of the casing 4 at the head and tail ends of the spiral material conveyor, and the transmission shaft 43 tightly clamps the flexible thick-wire rope 1 through the end part combined hoop structure 8, so as to transmit the transmission force to the flexible thick-wire rope 1. As shown in fig. 8, the other end is fixed with the thick steel wire rope flexible shaft 1 by arranging a combined hoop structure 8, a through bolt 9 and a half bolt 10, the combined hoop structure 8 comprises hoop sheets covering the outside of the joint of the transmission shaft 43 and the thick steel wire rope flexible shaft 1, the hoop sheets are fixedly connected through the half bolt 10, and the through bolt 9 for enhancing the fixing effect is further arranged at the outer end of the joint of the transmission shaft 43 and the thick steel wire rope flexible shaft 1. The flexible shaft screw conveyor can be driven by one end or synchronously driven by the head and the tail of the flexible shaft screw conveyor according to the length of the screw conveyor, so that the conveying effect of the screw conveyor is ensured.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.

Claims

1. A spiral flexible shaft is characterized in that: the novel steel wire rope winding machine comprises a thick steel wire rope flexible shaft (1) and a plurality of groups of helical blades (2), wherein the thick steel wire rope flexible shaft (1) is mainly formed by twisting more than one strand of steel wire rope, each group of helical blades (2) are respectively installed outside the thick steel wire rope flexible shaft (1) through a hoop structure (3), and an expansion joint (11) is formed between every two adjacent groups of helical blades (2).

2. The helical flexible shaft of claim 1, wherein: staple bolt structure (3) include a pair of ha fu embraces hoop pipe (31) and a plurality of fold bolt (32), and every group helical blade (2) comprises two half blade (21), and the center welding of every blade (21) is on the ha fu embraces hoop pipe (3) that corresponds, folds bolt (32) and is used for connecting two ha fu embraces hoop pipe (31), and every group helical blade (2) are fixed on thick wire rope flexible axle (1) through ha fu embraces hoop pipe (31) and folds bolt (32) detachably.

3. The helical flexible shaft of claim 2, wherein: the distance between two adjacent groups of helical blades (2) ranges from 5 mm to 30 mm.

4. A spiral material conveyor provided with the spiral flexible shaft of claim 1, characterized in that: including casing (4), spiral flexible axle (1) set up inside casing (4), and spiral flexible axle (1) is on a parallel with the axial of casing (4) for spiral conveying material.

5. The spiral material conveyor of claim 4, wherein: the casing (4) is of a nonlinear structure and comprises a bent section (41) and casing sections (42), wherein two ends of the bent section (41) are respectively connected with more than one casing section (42); the bent sections (41) are connected with the shell sections (42) through arranging first joints (5), and the adjacent shell sections (42) are connected through arranging the first joints (5) or second joints (6).

6. The spiral material conveyor of claim 5, wherein: the first joint (5) adopts a nylon bearing bush joint component, and the nylon bearing bush joint component comprises a joint shell (51), an annular nylon tile (52), a countersunk head screw (53), a fixed positioning nut (54) and an annular positioning ring (55); a fixed positioning nut (54) is welded at the excircle position of the helical blade (2), a countersunk screw (53) penetrates through the joint shell (51) to be connected with the fixed positioning nut (54), and the annular nylon tile (52) is connected with the fixed positioning nut (54); an annular positioning ring (55) is arranged on the inner wall of a cavity for mounting the annular nylon tile (52) of the joint shell (51) and used for positioning the annular nylon tile (52) and ensuring the concentricity of the annular nylon tile (52) and the helical blade (2) to form a bearing bush of the flexible shaft helical movement and rotate along with the helical flexible shaft (1).

7. The spiral material conveyor of claim 6, wherein: an oil groove (56) is radially formed in the position of a joint shell (51) for mounting the annular oil nylon tile (52); an annular tile seat (57) is arranged on the excircle of the annular oil nylon tile (52), an oil filling hole (58) is arranged on the annular tile seat (57), and the oil filling hole (58) is communicated with an oil ditch (56); an O-shaped ring (59) is arranged at the joint of the annular oil nylon tile (52) and the joint shell (51), and the annular tile seat (57) is connected with the joint shell (51) through bolts.

8. The spiral material conveyor of claim 5, wherein: first joint (5) adopt nylon axle bush to connect the subassembly, second joint (6) adopt the no tile to connect the subassembly, first joint (5) and second joint (6) all include and connect casing (51), connect two outsides of casing (51) to set up a set of casing flange (510) and annular flange (511) respectively for connect casing (51) detachably to install in the junction of adjacent casing segmentation (42), or turn the junction of curved section (41) and casing segmentation (42).

9. The spiral material conveyor of claim 5, wherein: and an access hole is formed in the shell (4) beside the first joint (5).

10. The spiral material conveyor of claim 4, wherein: one end of casing (4) sets up transmission shaft (43), or both ends set up transmission shaft (43) respectively, the one end of each transmission shaft (43) is used for connecting actuating mechanism (7), the other end is through setting up combination staple bolt structure (8), to wearing bolt (9), huff bolt (10) are fixed with thick wire rope flexible axle (1), combination staple bolt structure (8) are including covering in the outside hoop piece of embracing of transmission shaft (43) and thick wire rope flexible axle (1) junction, through huff bolt (10) fixed connection between the hoop piece, the outer end of transmission shaft (43) and thick wire rope flexible axle (1) junction still is equipped with to wearing bolt (9).